LED lighting device

Abstract

The present invention provides an LED lighting device. The LED lighting device comprises: a base, comprising a bottom surface and a side wall, wherein the side wall is arranged around the bottom surface, the side wall and the bottom surface form an accommodating space, and the bottom surface comprises a bottom surface recess; an optical assembly, at least partially arranged in the accommodating space, wherein the optical assembly comprises a light source assembly and an optical component, the light source assembly comprises circuit boards, an LED array, and an electrical connection unit, the circuit boards are arranged on the bottom surface, the LED array is arranged on the circuit boards, the circuit boards are electrically connected by means of the electrical connection unit, the circuit boards are at least partially accommodated in the bottom surface recess, the optical component comprises a plurality of optical units and comprises a first optical component and a second optical component surrounding the periphery of the first optical component, and the optical component covers the LED array and is located in a light exit direction of the LED array; a mounting frame, comprising a plurality of supporting members, wherein the optical component is held by the base and the mounting frame, and redundant space is formed between the mounting frame and the outer side of the side wall; and a power supply, arranged in the redundant space, wherein the mounting frame covers the power supply.

Description

LED lighting equipment Technical Field

[0001] The present invention belongs to the technical field of LED lighting devices, and in particular relates to an LED lighting device. Background Art

[0002] LED lighting is widely used due to its advantages of energy saving and long life. Common LED lamps in the prior art include flat panel lamps and grille lamps.

[0003] Existing flat panel lights typically consist of a light bar, a base frame, a light guide plate, and a diffuser. The light bar is mounted on the side of the base frame to provide lateral light output. Light from the light bar passes through the light guide plate and then exits through the diffuser. Existing flat panel lights have the following disadvantages: Light from the light bar experiences significant light loss after passing through the light guide plate and diffuser, resulting in low light output efficiency; the high cost of the light guide plate hinders cost control of the flat panel light; and the flat panel light has limited glare control.

[0004] Existing grille lights consist of a base frame, a light source (which can be a light bar, fluorescent tube, or LED tube), and a grille. The light source is fixed to the base frame, and the grille is located on the light-emitting side of the light source. Existing grille lights have the following disadvantages: The grille arrangement makes it difficult to control the height of the grille light, increasing packaging and transportation costs; the high cost of the grille hinders overall lamp cost control; and the grille installation results in significant light loss and easily creates dark areas, hindering light output.

[0005] LED lighting fixtures in the existing technology, especially some grille lights with honeycomb array optical structures, often have complex and scattered components in their structural design. For example, a reflector cup structure is designed to be composed of multiple components, which is complicated to process and costly. In the assembly of the lamps, many steps are also required, making it difficult to improve production efficiency.

[0006] The light pattern of LED panel lights or grille lights in the existing technology is mostly Lambertian, which does not meet the lighting requirements in some occasions where other lighting effects are sought. For example, it does not meet the requirements under lighting conditions where a bat-wing light pattern is required. Usually, achieving a bat-wing light pattern requires the coordination of light sources emitting light in different directions, which makes the lamp structure complex and increases production costs.

[0007] In summary, given the shortcomings and defects of LED lighting devices in the prior art, how to design LED lighting devices to solve the glare problem, improve light efficiency, and reduce costs is a technical problem that urgently needs to be solved by those skilled in the art.

[0008] Summary of the Invention

[0009] This summary describes many embodiments of the present invention. However, the term "invention" is intended to describe only certain embodiments disclosed herein (whether or not included in the claims), and is not a complete description of all possible embodiments. Certain embodiments described above as various features or aspects of the present invention may be combined in various ways to form an LED lighting device or portion thereof.

[0010] An embodiment of the present invention provides an LED lighting device, characterized by comprising:

[0011] A base, the base comprising a bottom surface and side walls, the side walls being arranged around the bottom surface and forming an accommodating space with the bottom surface, and the bottom surface comprising an integrally formed bottom surface groove;

[0012] an optical assembly, wherein at least a portion of the optical assembly is disposed in the accommodating space, the optical assembly comprising a light source assembly and an optical member, the light source assembly comprising a circuit board, an LED array, and an electrical connection unit, the circuit board being disposed on the bottom surface of the base, the LED array being disposed on the circuit board, the circuit boards being electrically connected to each other via the electrical connection unit, and at least a portion of the circuit board being accommodated in the bottom surface groove, the optical member comprising a plurality of optical units, each comprising a first optical member and a second optical member surrounding the outer periphery of the first optical member, the optical member covering the LED array and being located in the light emitting direction of the LED array;

[0013] A mounting frame, the mounting frame comprising a plurality of supporting members, the optical component being clamped by the base and the mounting frame, the mounting frame and the side wall forming a redundant space outside the accommodating space; and

[0014] A power supply is arranged in the redundant space, and the installation frame covers the power supply.

[0015] An embodiment of the present invention further includes a hanging member, which is disposed on the base and includes a plurality of hooks.

[0016] In one embodiment of the present invention, the first optical member covers the LED array, and at least a portion of the light generated by the LED array is emitted from the first optical member.

[0017] In one embodiment of the present invention, the second optical component includes a plurality of optical walls arranged around the first optical component, and the optical walls reflect at least a portion of the light emitted from the first optical component.

[0018] In one embodiment of the present invention, the side wall includes a mounting end wall that is away from the bottom surface and parallel to the bottom surface, and the mounting end wall is formed by extending the side wall.

[0019] In one embodiment of the present invention, the mounting end wall includes a supporting portion and a limiting portion. The supporting portion and the limiting portion are integrally formed, and the limiting portion is an arc-shaped protrusion.

[0020] In one embodiment of the present invention, the supporting member includes a first wall, and the first wall and the limiting portion clamp the optical component.

[0021] In one embodiment of the present invention, a first step structure and a second step structure are provided on the first wall. The first step structure abuts against the supporting portion, and the second step structure surrounds the outer side of the supporting portion.

[0022] In one embodiment of the present invention, the LED array includes a plurality of LED lamp beads, the circuit board includes a convex portion and a concave portion, and the LED lamp beads are arranged on the convex portion.

[0023] An embodiment of the present invention provides an LED lighting device, characterized by comprising:

[0024] A base, the base comprising a bottom surface and side walls, the side walls being arranged around the bottom surface and forming an accommodating space with the bottom surface, and the bottom surface comprising an integrally formed bottom surface groove;

[0025] an optical component, at least a portion of which is disposed in the accommodating space;

[0026] The optical component includes a light source component, an optical member and an optical bearing part. The light source component includes a circuit board, an LED array and an electrical connection unit. The circuit board is arranged on the bottom surface of the base, and the LED array is arranged on the circuit board. The circuit boards are electrically connected through the electrical connection unit, and at least part of the circuit board is accommodated in the bottom surface groove. The optical bearing part is arranged on the bottom surface of the base, and the optical member is arranged on the optical bearing part. The optical bearing part includes a plurality of window structures corresponding to the LED array, and the light emitted by the LED array passes through the window structure to reach the optical member.

[0027] In one embodiment of the present invention, the optical bearing portion includes a first prism structure and a second prism structure spaced apart from each other, the first prism structure includes a prism surface provided with a window, the second prism surface is pressed against the circuit board, and the window exposes the LED array.

[0028] In one embodiment of the present invention, the optical component includes a plurality of optical units arranged in an array, and the optical unit includes a first optical component and a second optical component arranged around the first optical component.

[0029] In one embodiment of the present invention, the LED array includes a plurality of LED lamp beads, the circuit board includes a convex portion and a concave portion, and the LED lamp beads are arranged on the convex portion.

[0030] An embodiment of the present invention provides an LED lighting device, characterized by comprising:

[0031] a base, the base comprising a bottom surface and side walls, the side walls being arranged around the bottom surface and forming an accommodating space with the bottom surface, the bottom surface comprising an integrally formed bottom surface groove; and

[0032] an optical assembly, wherein at least a portion of the optical assembly is disposed in the accommodating space, the optical assembly comprising a light source assembly and an optical member, the light source assembly comprising a circuit board, an LED array, and an electrical connection unit, the circuit board being disposed on the bottom surface of the base, the LED array being disposed on the circuit board, the circuit boards being electrically connected to each other via the electrical connection unit, and at least a portion of the circuit board being accommodated in the bottom surface groove;

[0033] The optical member includes a plurality of optical units, the optical unit including a first optical member and a second optical member surrounding an outer periphery of the first optical member;

[0034] The optical component covers the LED array and is located in the light emitting direction of the LED array.

[0035] The optical component further includes a directional diffusion film, a light guide plate and a reflective paper. A first clamping portion is provided at one end of the optical component close to the light source assembly, and the directional diffusion film, the light guide plate and the reflective paper are connected to the optical component via the first clamping portion.

[0036] The light source components are arranged on both sides of the light guide plate.

[0037] One embodiment of the present invention further includes a mounting frame and a power supply, wherein the mounting frame includes a plurality of supporting members, and the optical component is clamped by the base and the mounting frame;

[0038] The mounting frame and the side wall form a redundant space outside the accommodating space;

[0039] The power supply is arranged in the redundant space, and the installation frame covers the power supply.

[0040] In one embodiment of the present invention, the second optical component includes a plurality of optical walls, each of which includes a light exit hole, and the light exit hole exposes the LED array.

[0041] In one embodiment of the present invention, a support portion is provided at one end of the optical component close to the light source assembly. The support portion contacts the bottom surface and keeps a distance between the optical component and the bottom surface.

[0042] An embodiment of the present invention further includes a hanging member fixed to the base, and the hanging member includes a plurality of hooks.

[0043] In one embodiment of the present invention, the side wall includes a mounting end wall that is away from the bottom surface and parallel to the bottom surface, and the mounting end wall is formed by extending the side wall.

[0044] In one embodiment of the present invention, the mounting end wall includes a supporting portion and a limiting portion. The supporting portion and the limiting portion are integrally formed, and the limiting portion is an arc-shaped protrusion.

[0045] An embodiment of the present invention provides an LED lighting device, characterized by comprising:

[0046] A base, the base comprising a bottom surface and side walls, the side walls being arranged around the bottom surface and forming an accommodating space with the bottom surface, and the bottom surface comprising an integrally formed bottom surface groove;

[0047] an optical component, at least a portion of which is disposed in the accommodating space;

[0048] The optical assembly includes a light source assembly and an optical component, the light source assembly includes a circuit board, an LED array, and an electrical connection unit, the circuit board is arranged on the bottom surface of the base, the LED array is arranged on the circuit board, the circuit boards are electrically connected to each other through the electrical connection unit, and at least a portion of the circuit board is accommodated in the bottom surface groove;

[0049] The optical member includes a plurality of optical units and a diffuser, wherein the optical unit includes a first optical member and a second optical member surrounding an outer periphery of the first optical member;

[0050] The diffusion element is clamped to the optical unit;

[0051] The optical component covers the LED array and is located in the light emitting direction of the LED array.

[0052] In one embodiment of the present invention, the diffuser includes a flat portion, a three-dimensional portion and a hook, the flat portion has a surface parallel to the bottom surface, the flat portion is fixed to the bottom surface, the three-dimensional portion is arranged on the surface of the flat portion parallel to the bottom surface, and the hook can be arranged around the flat portion.

[0053] In one embodiment of the present invention, a mounting frame and a power supply are further included, wherein the mounting frame includes a plurality of supporting members, and the optical component is clamped by the base and the mounting frame;

[0054] The mounting frame and the side wall form a redundant space outside the accommodating space;

[0055] The power supply is arranged in the redundant space, and

[0056] The mounting frame covers the power supply.

[0057] In one embodiment of the present invention, the second optical component includes a plurality of optical walls, each of which includes a light exit hole, and the light exit hole exposes the LED array.

[0058] In one embodiment of the present invention, a support portion is provided at one end of the optical component close to the light source assembly. The support portion contacts the bottom surface and keeps a distance between the optical component and the bottom surface.

[0059] An embodiment of the present invention further includes a hanging member fixed to the base, and the hanging member includes a plurality of hooks.

[0060] In one embodiment of the present invention, the side wall includes a mounting end wall that is away from the bottom surface and parallel to the bottom surface, and the mounting end wall is formed by extending the side wall.

[0061] In one embodiment of the present invention, the mounting end wall includes a supporting portion and a limiting portion. The supporting portion and the limiting portion are integrally formed, and the limiting portion is an arc-shaped protrusion.

[0062] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects: the optical component is directly fixed through the base and the mounting unit, thereby improving product reliability and simplifying the mounting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] FIG1 is a schematic front view of an LED lighting device according to an embodiment of the present invention;

[0064] FIG2 is an enlarged view of point A in FIG1 ;

[0065] FIG3 is a schematic cross-sectional view of an LED lighting device according to an embodiment of the present invention;

[0066] FIG4 is an enlarged view of point B in FIG3 ;

[0067] FIG5 is a perspective schematic diagram of an LED lighting device according to an embodiment of the present invention;

[0068] FIG6 is a schematic diagram of FIG1 without optical components;

[0069] FIG7 is an enlarged view of point C in FIG6;

[0070] FIG8 is a perspective schematic diagram of an optical component;

[0071] FIG9 is a perspective schematic diagram of the base;

[0072] FIG10 is a schematic diagram of a three-dimensional structure of an LED lighting device in one embodiment;

[0073] FIG11 is a second schematic diagram of the three-dimensional structure of an LED lighting device in one embodiment;

[0074] FIG12 is a schematic cross-sectional view of an LED lighting device in one embodiment;

[0075] FIG13 is an enlarged view of point D in FIG12;

[0076] FIG14 is an enlarged view of point E in FIG12 ;

[0077] FIG15 is a schematic diagram of the three-dimensional structure of the LED lighting device in an embodiment without optical components;

[0078] FIG16 is a schematic diagram of a three-dimensional structure of an optical component in one embodiment;

[0079] FIG17 is a schematic cross-sectional view of an LED lighting device in one embodiment;

[0080] FIG18 is an enlarged view of point F in FIG17 ;

[0081] FIG19 is a schematic diagram of light emission of an LED lamp bead;

[0082] FIG20 is a schematic diagram of light output from an LED array;

[0083] FIG21 is a schematic diagram of the three-dimensional structure of an LED lighting device in one embodiment;

[0084] FIG22 is a schematic cross-sectional view of an LED lighting device in one embodiment;

[0085] FIG23 is an enlarged view of point G in FIG22;

[0086] FIG24 is a partial cross-sectional schematic diagram of the mounting structure;

[0087] FIG25 is an enlarged view of point H in FIG22;

[0088] FIG26 is a first schematic diagram of a rear structural view of an LED lighting device in some embodiments;

[0089] FIG27 is a second schematic diagram of the rear view structure of the LED lighting device in some embodiments;

[0090] FIG28 is a third schematic diagram of the rear view structure of the LED lighting device in some embodiments;

[0091] FIG29 is a schematic diagram of a three-dimensional structure of an LED lighting device in one embodiment;

[0092] FIG30 is an enlarged schematic diagram of point I in FIG29;

[0093] FIG31 is a schematic cross-sectional view of an LED lighting device in one embodiment;

[0094] FIG32 is an enlarged schematic diagram of point J in FIG31;

[0095] FIG33 is a schematic diagram of a three-dimensional structure of an LED lighting device in one embodiment;

[0096] FIG34 is a schematic diagram of the front view of an LED lighting device in one embodiment;

[0097] FIG35 is a first cross-sectional view of an LED lighting device according to an embodiment;

[0098] FIG36 is an enlarged view of point K in FIG35 ;

[0099] FIG37 is a second cross-sectional view of an LED lighting device according to an embodiment, showing a cross-section in a different direction from FIG35 ;

[0100] FIG38 is an enlarged view of L in FIG37;

[0101] FIG39 is a schematic partial cross-sectional view of an LED lighting device in one embodiment, which is installed horizontally and emits light downward;

[0102] FIG40 is a schematic partial cross-sectional view of an LED lighting device in an embodiment in which the LED lighting device is installed horizontally and emits light downward;

[0103] FIG41 is a schematic partial cross-sectional view of an LED lighting device in one embodiment, which is installed horizontally and emits light downward;

[0104] FIG42 is a schematic partial cross-sectional view of an LED lighting device in one embodiment, which is installed horizontally and emits light downward;

[0105] FIG43 is a schematic partial cross-sectional view of an LED lighting device in an embodiment of the present invention, wherein the LED lighting device is installed horizontally and emits light downward;

[0106] FIG44 is a light distribution curve of an LED lighting device in one embodiment;

[0107] FIG45 is a schematic diagram of an LED lighting device according to an embodiment;

[0108] FIG46 is a first perspective structural diagram of an LED lighting device according to an embodiment, showing the front side of the LED lighting device;

[0109] FIG47 is a second schematic diagram of the three-dimensional structure of the LED lighting device according to an embodiment, showing the back side of the LED lighting device;

[0110] FIG48 is a schematic cross-sectional view of an LED lighting device according to an embodiment;

[0111] FIG49 is an enlarged view of point M in FIG48;

[0112] FIG50 is a schematic diagram of the three-dimensional structure of FIG46 without the optical components;

[0113] FIG51 is a schematic diagram of the three-dimensional structure of FIG46 without the light redirecting unit;

[0114] FIG52 is a schematic diagram of the three-dimensional structure of FIG51 without the power box;

[0115] FIG53 is a schematic diagram of the three-dimensional structure of the bottom plate in one embodiment;

[0116] FIG54 is a schematic diagram of the three-dimensional structure of a power supply in one embodiment;

[0117] FIG55 is a schematic diagram of the coordination between the power supply circuit board and the electronic components;

[0118] Figure 56 is a rear view of Figure 55;

[0119] FIG57 is a schematic diagram of a three-dimensional structure of an LED lighting device in some embodiments;

[0120] FIG58 is a schematic diagram of the three-dimensional structure of FIG57 without the second optical element;

[0121] FIG59 is an enlarged view of point N in FIG58;

[0122] FIG60 is a schematic perspective view of the structure of FIG57 without the optical components;

[0123] FIG61 is a first schematic cross-sectional view of an LED lighting device in some embodiments;

[0124] FIG62 is an enlarged view of point P in FIG61;

[0125] FIG63 is a second schematic cross-sectional view of an LED lighting device in some embodiments;

[0126] FIG64 is an enlarged view of point Q in FIG63;

[0127] FIG65 is a schematic diagram of a three-dimensional structure of an LED lighting device in some embodiments;

[0128] FIG66 is a schematic diagram of the three-dimensional structure of FIG65 without the second optical element;

[0129] FIG67 is a schematic cross-sectional view of an LED lighting device in some embodiments;

[0130] FIG68 is an enlarged view of point O in FIG67;

[0131] FIG69 is a first schematic diagram of a three-dimensional structure of an LED lighting device in some embodiments;

[0132] FIG70 is a second schematic diagram of the three-dimensional structure of an LED lighting device in some embodiments;

[0133] FIG71 is a first schematic cross-sectional view of an LED lighting device in some embodiments;

[0134] FIG72 is an enlarged view of point P in FIG71;

[0135] Figure 73 is an enlarged view of point Q in Figure 71;

[0136] FIG74 is a second schematic cross-sectional view of an LED lighting device in some embodiments;

[0137] FIG75 is an enlarged view of point R in FIG74 ;

[0138] FIG76 is a front view of the overall structure of an LED lighting device in some embodiments;

[0139] FIG77 is a schematic back view of the overall structure of an LED lighting device in some embodiments;

[0140] FIG78 is an exploded view of the overall structure of an LED lighting device in some embodiments from the rear direction;

[0141] FIG79 is an exploded front view of the overall structure of an LED lighting device in some embodiments;

[0142] Fig. 80 is an enlarged schematic diagram of point S in Fig. 79;

[0143] FIG81 is a schematic cross-sectional view of an optical member in some embodiments;

[0144] FIG82 is an enlarged schematic diagram of point T in FIG81;

[0145] FIG83 is a schematic diagram of a light source in some embodiments;

[0146] FIG84 is a schematic diagram showing the positional relationship between LED lamp beads and optical components in some embodiments;

[0147] FIG85 is an exploded view of a mounting unit in some embodiments;

[0148] FIG86 is a schematic cross-sectional view of a mounting unit in some embodiments;

[0149] FIG87 is an enlarged schematic diagram of point U in FIG86;

[0150] FIG88 is a cross-sectional view of an LED lighting device in some embodiments;

[0151] FIG89 is an enlarged schematic diagram of point V in FIG88;

[0152] FIG90 is a front perspective schematic diagram of an LED lighting device in yet another embodiment of the present application;

[0153] FIG91 is a perspective diagram of the back side of an LED lighting device in another embodiment of the present application;

[0154] FIG92 is a schematic diagram of an exploded back side of an LED lighting device in another embodiment of the present application.

[0155] FIG93 is a schematic diagram of a hanging support member in yet another embodiment of the present application;

[0156] FIG94 is an enlarged view of point W in FIG91;

[0157] Figure 95 is an enlarged view of the X-line in Figure 92;

[0158] FIG96 is an exploded front view of an LED lighting device in another embodiment of the present application;

[0159] FIG97 is a schematic diagram of the main frame of an LED lighting device in another embodiment of the present application

[0160] FIG98 is a schematic diagram showing a hanging member in an LED lighting device according to another embodiment of the present application rotated at a certain angle relative to the main body of the LED lighting device;

[0161] FIG99 is an enlarged view of point Y in FIG98 of the present application;

[0162] 100 to 103 are schematic diagrams showing the fixing of an LED lighting device and a usage environment in another embodiment of the present application;

[0163] FIG104 is a perspective schematic diagram of an LED lighting device in yet another embodiment of the present application;

[0164] FIG105 is an exploded schematic diagram of an LED lighting device according to yet another embodiment of the present application;

[0165] FIG106 is a front view of an LED lighting fixture according to an embodiment of the present invention;

[0166] FIG107 is a schematic diagram showing the back side of an LED lighting fixture according to an embodiment of the present invention;

[0167] FIG108 is a schematic diagram of an exploded front view of an LED lighting fixture according to an embodiment of the present invention;

[0168] FIG109 is a schematic diagram of a base according to an embodiment of the present invention;

[0169] FIG110 is a schematic cross-sectional view of an LED lighting fixture according to an embodiment of the present invention;

[0170] FIG111A is a schematic diagram showing a light source assembly according to an embodiment of the present invention;

[0171] FIG111B is a schematic diagram showing a light source assembly according to another embodiment of the present invention;

[0172] FIG111C is a schematic diagram showing a light source assembly according to yet another embodiment of the present invention;

[0173] FIG111D is a schematic diagram showing a plurality of light source assemblies cut according to the present invention;

[0174] FIG111E is a schematic diagram showing a light source assembly according to an embodiment of the present invention;

[0175] FIG111F is a schematic diagram showing a light source assembly according to yet another embodiment of the present invention;

[0176] FIG112 is a schematic diagram showing an LED lighting fixture according to an embodiment of the present invention with the light processing component removed;

[0177] FIG113 is a front view of some components of an LED lighting fixture according to another embodiment of the present invention;

[0178] FIG114 is a front view of a chassis of an LED lighting fixture according to another embodiment of the present invention;

[0179] FIG115 is a schematic diagram showing the back side of a chassis of an LED lighting fixture according to another embodiment of the present invention;

[0180] FIG116 is a schematic diagram showing the assembly of a power cord box and a chassis according to another embodiment of the present invention;

[0181] FIG117 is a schematic cross-sectional view of an LED lighting fixture along the length direction according to another embodiment of the present invention;

[0182] FIG118 is a schematic diagram of an LED lighting fixture according to yet another embodiment of the present invention;

[0183] FIG119 is a front exploded schematic diagram of an LED lighting fixture according to yet another embodiment of the present invention;

[0184] FIG120 is a schematic diagram showing a light processing unit according to yet another embodiment of the present invention;

[0185] FIG121 shows a partial enlarged view of the position Z in FIG120;

[0186] FIG122A is a schematic diagram showing a directional diffusion film according to yet another embodiment of the present invention;

[0187] FIG122B is a schematic diagram showing a directional diffusion film distribution in yet another embodiment of the present invention;

[0188] FIG123 shows a light pattern of an LED lighting fixture according to yet another embodiment of the present invention after light is emitted;

[0189] FIG124 is a schematic diagram showing another directional diffusion film distribution in yet another embodiment of the present invention;

[0190] FIG125 shows another light pattern of an LED lighting fixture according to yet another embodiment of the present invention;

[0191] FIG126 is a schematic diagram of an LED lighting fixture according to an embodiment of the present invention;

[0192] FIG127 is a front exploded schematic diagram of an LED lighting fixture according to an embodiment of the present invention;

[0193] FIG128 is a schematic diagram showing the back side of an LED lighting fixture according to an embodiment of the present invention;

[0194] FIG129 is a schematic cross-sectional view taken along AA in FIG128;

[0195] FIG130 is a partial enlarged view of point A′ in FIG129 ;

[0196] FIG131 is a partial enlarged view of point B' in FIG129;

[0197] FIG132 is a schematic cross-sectional view taken along line BB of FIG128;

[0198] FIG133 is a partial enlarged view of point C' in FIG132;

[0199] FIG134 is a schematic diagram of a light processing unit according to an embodiment of the present invention;

[0200] FIG135 is a partial enlarged view of point D' in FIG134;

[0201] FIG136 shows a light pattern of an LED lighting fixture according to an embodiment of the present invention after light is emitted;

[0202] FIG137 is a schematic diagram of an LED lighting fixture according to yet another embodiment of the present invention;

[0203] FIG138 is a front exploded schematic diagram of an LED lighting fixture according to yet another embodiment of the present invention;

[0204] FIG139 is a schematic diagram showing the back side of an LED lighting fixture according to yet another embodiment of the present invention;

[0205] FIG140 is a schematic cross-sectional view taken along CC in FIG139;

[0206] FIG141 is a partial enlarged view of point E' in FIG140;

[0207] FIG142 is a schematic cross-sectional view taken along DD in FIG139;

[0208] FIG143A is a partial enlarged view of point F' in FIG142;

[0209] FIG143B is a schematic diagram of the optical path in FIG143A;

[0210] FIG144 is a schematic cross-sectional view taken along EE in FIG139;

[0211] FIG145 is a partial enlarged view of the position G' in FIG144;

[0212] FIG146 is a partial enlarged view of the H' in FIG144;

[0213] FIG147 is a schematic diagram showing a diffuser according to another embodiment of the present invention;

[0214] FIG148 is a schematic diagram showing the back side of an LED lighting fixture without a chassis according to yet another embodiment of the present invention;

[0215] FIG149A is a schematic diagram showing a chassis according to yet another embodiment of the present invention;

[0216] FIG149B is a partial enlarged view of point I' in FIG149A of the present invention;

[0217] FIG150 is a schematic diagram of a light processing unit according to an embodiment of the present invention;

[0218] FIG151 is a partial enlarged view of J' in FIG150;

[0219] FIG152 shows a partially exploded view of an LED lamp in one embodiment of the present invention.

[0220] In the figure: 100, LED lighting device; 1, base; 10, bottom surface; 101, bottom surface groove; 1011, positioning unit; 1012, reinforcement unit; 10121, first reinforcement unit; 10122, second reinforcement unit; 1013, bottom surface groove cavity; 1014, accommodating cavity; 1015, groove gap; 1016, plug hole; 1017, light source groove; 1018, power supply groove; 102, groove cavity cover; 1021, plug portion; 103, wire hole; 104, first positioning hole of power supply box; 105, second positioning hole of power box; 106, fourth engaging portion; 11, side wall; 12, accommodating space; 13, mounting end wall; 131, force member; 132, fitting portion; 133, extension portion; 134, accommodating portion; 135, limiting portion; 136, supporting portion; 137, through hole; 1371, assembly hole; 1372, first positioning hole; 138, first mounting portion; 1381, first horizontal mounting portion; 1382, second horizontal mounting portion; 139, second mounting portion; 2, optical assembly; 20, light source assembly; 201, LED lamp beads; 202, circuit board; 2021, recessed portion; 2022, protruding portion; 2023, circuit board mounting hole; 203, LED array; 204, electrical connection unit; 21, optical component; 211. Optical unit; 2111. First optical component; 21110. Midpoint; 21111. First light-emitting surface; 211111. Main body; 21112. Tail; 2112. Second optical component; 21121. First connecting member; 21122. Proximal end; 21123. Distal end; 21124. Optical wall; 211241. First light redirecting wall; 211241. First reflecting portion; 211242. Second light redirecting wall; 211243. Light-emitting hole; 21125. Second cavity; 21126. Support portion; 211261. Connecting portion; 211262. First engaging portion; 2113. First connecting wall; 21131. Positioning portion; 2 114. Second connecting wall; 2115. Third connecting wall; 2116. Reinforcing wall; 2117. First region; 2118. Second region; 2119. Third optical member; 21191. First reflecting surface; 21192. Second reflecting surface; 212. Mounting unit; 2121. Mounting hole; 2122. Mounting wall; 21221. Bend portion; 213. Directional diffusion film; 214. Prism plate; 215. Light guide plate; 216. Reflective paper; 217. Diffuser; 2171. Flattening portion; 21711. Reinforcing portion; 2172. Three-dimensional portion; 2173. Hook; 22. Optical bearing portion; 221. Prism structure; 222. Window structure; 223. Avoidance portion; 3. Power supply; 31. Power supply circuit board; 311. First surface; 3111. Thermal conductive material; 312. Second surface; 32. Electronic components; 321 (322) heating element; 33. Power supply box; 331. Light redirecting unit; 3311. Light channel;33111, first light channel; 33112, second light channel; 3312, side surface; 3313, top surface; 34, adjustment switch; 4, hanging support; 41, first rotating fastening portion; 411, third connecting member; 42, second rotating fastening portion; 43, hook; 44, corner protector; 5. Mounting frame; 51. Support member; 511. First wall; 5111. Second connecting member; 5112. First positioning member; 5113. First extension portion; 5114. Second extension portion; 5115. Third extension portion; 512. Second wall; 5121. Stop portion; 5122. Step structure; 51221. Outer extension portion; 51222. Inner extension portion; 51223. Locking groove; 51224. Rotating snap-fit ​​groove; 51225. First step portion; 51226. Second step portion; 513. Safety rope; 514. Wire; 6. Power cord box; 61. Second positioning member; 62. Third positioning member; 7. Wiring terminal; 8. Connecting plate; 9. Wiring cover; 91. Second locking portion; 92. Third locking portion; DETAILED DESCRIPTION

[0221] Embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the present invention are shown. However, the present invention may be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the present invention to those skilled in the art. Like reference numerals indicate like elements in the drawings.

[0222] It will be understood that although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element without departing from the scope of the present invention. When used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0223] It will be understood that when an element, such as a layer, region, or substrate, is referred to as being “on” or extending “onto” another element, the element may be directly on or directly extending onto the other element, or intervening elements may be present. Conversely, when an element is referred to as being “directly on” or “extending directly onto” another element, there are no intervening elements present. It will also be understood that when an element is referred to as being “connected” or “coupled” to another element, it may be directly connected or coupled to the other element, or there may be intervening elements present. Conversely, when an element is referred to as being “directly connected” or “directly coupled” to another element, there are no intervening elements present.

[0224] Relative terms such as "below" or "above" or "upper" or "lower" or "horizontal" or "vertical" may be used herein to describe the relationship of one element, layer or region to another element, layer or region as shown in the figures. It will be understood that these terms are intended to cover different device orientations other than the orientation depicted in the figures. In the present invention, the terms "perpendicular", "horizontal" and "parallel" are defined as including ±10% of the standard definition. For example, perpendicular generally refers to an angle of 90 degrees relative to a reference line, but in the present invention, perpendicular refers to a range of 80 to 100 degrees.

[0225] The terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the present invention. When used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that when used herein, the terms "comprise," "include," "includes," and / or "comprising" specify the presence of stated features, integers, steps, operations, elements, and / or parts, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, and / or combinations thereof.

[0226] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will also be understood that the terms used herein should be interpreted as having a meaning consistent with their meaning in the context of this specification and the relevant art, and should not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0227] Unless otherwise expressly stated, comparative quantitative terms such as "less than" and "greater than" are intended to encompass the concept of equality. For example, "less than" may mean not only "less than" in the strictest mathematical sense, but also "less than or equal to."

[0228] As shown in Figures 1 to 6, an embodiment of the present invention provides an LED lighting device, comprising a base 1, an optical assembly 2, and optical assembly 2. Optical assembly 2 includes a light source assembly 20, an optical component 21, and a power supply 3. Light source assembly 20 is electrically connected to power supply 3 and disposed on base 1. Optical component 21 is disposed in the light emitting direction of light source assembly 20.

[0229] Referring to Figure 9, the base 1 in this embodiment has a bottom surface 10 and a side wall 11, and the side wall 11 is arranged at the outer edge of the bottom surface 10 to form an accommodating space 12 between the side wall 11 and the bottom surface 10. The light source assembly 20 is arranged in the accommodating space 12. The base 1 can be made of metal, such as iron or stainless steel, to increase its heat dissipation performance. In some embodiments, the base 1 is composed of an integrated structure, and the side wall 11 is directly bent relative to the bottom surface 10. In some embodiments, the base 1 is composed of an integrated structure, which is directly formed by stamping or stretching, so that it has better structural strength. In some embodiments, the base 1 can also be made of plastic.

[0230] Referring to Figures 6 and 7 , in this embodiment, the light source assembly 20 can be directly fixed to the bottom surface 10 of the base 1. Specifically, the light source assembly 20 includes LED lamp beads 201 (herein, LED lamp beads can also be LED chips) and a circuit board 202. The LED lamp beads 201 are fixed to the circuit board 202, and the light source assembly 20 is directly fixed to the bottom surface 10 of the base 1 via the circuit board 202. In some embodiments, the circuit board 202 is directly fixed to the bottom surface 10 of the base 1 by bonding. In some embodiments, the light source assembly 20 can be clipped onto the bottom surface 10 of the base 1 via the circuit board 202. In some embodiments, the light source assembly 20 can be directly fixed to the bottom surface 10 of the base 2 by welding. In the above embodiments, the light source assembly 20 forms a heat conduction path with the bottom plate of the base 1, so that the heat generated by the LED lamp beads 201 during operation can be quickly transferred to the base 1 and dissipated through the base 1, thereby improving heat dissipation efficiency. Referring to Figure 7 , in some embodiments, the LED lamp beads 201 are arranged in two rows on the circuit board 202. 13 and 15 , in some embodiments, the LED lamp beads 201 on the circuit board 202 are arranged in one column.

[0231] In some embodiments, the LED lamp beads 201 have multiple columns, and adjacent LED lamp beads are staggered or spaced apart.

[0232] Referring to Figures 12, 13, and 15, in one embodiment, the base 1 may be provided with a positioning unit 1011 for positioning the light source assembly 20. The positioning unit 1011 is a strip-shaped groove structure, i.e., a bottom groove, provided on the bottom surface 10. The circuit board 202 of the light source assembly 20 is at least partially or fully accommodated within the bottom groove, thereby fixing the position of the circuit board 202 relative to the bottom surface 10. Furthermore, the bottom groove is stamped into the bottom surface 10, i.e., integrally formed on the bottom surface. This acts as a reinforcing rib on the bottom surface 10, thereby increasing the structural strength of the bottom surface 10 against flexure. In this embodiment, the thickness of the circuit board 202 is approximately the same as the depth of the bottom groove. The light source assembly 20 also includes an electrical connection unit 204, which is affixed to the bottom surface 10 and electrically connects to the circuit board 202 within the groove. The electrical connection unit 204, affixed to the bottom surface 10, compresses the circuit board 202 to prevent it from loosening. In addition, the electrical connection unit 204 can be fixed to the bottom surface 10, for example, by glue or screws, so as to increase its stability and prevent the electrical connection unit 204 from becoming loose and causing the electrical connection between the electrical connection unit 204 and the circuit board 202 to become disconnected and fail.

[0233] Referring to Figures 46 to 53, in some embodiments, a reinforcement unit 1012 may be provided on the base 1 to increase its strength. The reinforcement unit 1012 may include a plurality of first reinforcement structures 10121 and a plurality of second reinforcement structures 10122, wherein the first reinforcement structures 10121 and the second reinforcement structures 10122 may be connected. In some embodiments, the first reinforcement structures 10121 and the second reinforcement structures 10122 may be arranged perpendicularly or substantially perpendicularly to each other, with the first reinforcement structures 10121 extending along the length of the LED lighting device. In some embodiments, the first reinforcement structures 10121 protrude toward the back side of the base 1 (the side without the light source assembly 20), and similarly, the second reinforcement structures 10122 protrude toward the back side of the base 1. On the front side of the base 1, the first reinforcement structures 10121 and the second reinforcement structures 10122 are connected. The first reinforcement structure 10121 and the second reinforcement structure 10122 can be integrally formed on the base 1, for example, by stretching or stamping, so that the first reinforcement structure 10121 and the second reinforcement structure 10122 protrude toward the back of the base 1. Furthermore, the wall thickness of the first reinforcement structure 10121 and the second reinforcement structure 10122 is substantially the same as the wall thickness of the rest of the base 1. In other words, without adding additional material to the base plate 1, the provision of the first reinforcement structure 10121 and the second reinforcement structure 10122 can enhance the overall structural strength of the base 1.

[0234] Referring to Figure 53, a portion of the first reinforcement structure 10121 forms the aforementioned positioning unit 1011 for mounting the circuit board 202 of the light source assembly 20. This portion of the first reinforcement structure 10121 has a first width. One of the first reinforcement structures 10121 has an area for arranging the power supply 3, and this first reinforcement structure 10121 has a second width. Because the first reinforcement structure 10121 is concave on the front of the base 1, when the power supply 3 is arranged at the first reinforcement structure 10121, the protrusion of the power supply 3 from the surface of the base 1 can be reduced, thereby reducing the overall thickness of the LED lighting device. The remaining first reinforcement structures 10121 have a third width. The third width is smaller than the first width, which is smaller than the second width. The third width is greater than 2.5 mm.

[0235] 53 , several second reinforcement structures 10122 all have the same or substantially the same width.

[0236] Referring to FIG. 53 , the distance between adjacent first reinforcement structures 10121 is between 10 mm and 30 mm.

[0237] Referring to Figures 1 to 3, in this embodiment, the optical component 21 includes an optical unit 211 and a mounting unit 212, and the mounting unit 212 corresponds to the base 1. Specifically, the mounting unit 212 is connected to the side wall 11 of the base 1. The mounting unit 212 can be arranged on the inner side or the outer side of the side wall 11. In this embodiment, the mounting unit 212 is arranged on the outer side of the side wall 11 so that the optical component 21 is entirely covered on the side of the base 1 in the light emitting direction of the LED lighting device. When the LED lighting device is installed on the ceiling, the base 1 is not exposed and the user cannot directly see the base 1. Only one set of optical units 211 is provided.

[0238] 10 and 16 , in one embodiment, the mounting unit 212 includes at least one mounting hole 2121 disposed on the optical member 21 and on a mounting wall 2122. Accordingly, the base 1 is also provided with a hole corresponding to the mounting hole 2121. Thus, rivets can be inserted through the corresponding holes in the optical member 21 and the base 1 to secure the optical member 21 to the base 1.

[0239] Referring to Figures 21 to 24 , in one embodiment, a mounting unit 212 is disposed on the outer edge of the optical component 21 and includes a mounting wall 2122. The mounting wall 2122 surrounds the sidewall 11 of the base 1 and is disposed on the outer side of the sidewall 11. A bent portion 21221 is provided on the mounting wall 2122. The bent portion 21221 covers or abuts the end of the sidewall 11 in the thickness direction of the LED lighting device. Thus, the bent portion 21221 and the optical component 21 can clamp the sidewall 11, thereby securing the optical component 21 to the base 1. Furthermore, this fixing method eliminates the need for fasteners (such as bolts or rivets) to secure the optical component 21 to the base 1. This prevents fasteners from being placed on the light-emitting surface of the optical component 21, which could affect the light output of the optical component 21 (e.g., causing localized dark spots on the light-emitting surface of the optical component 21 due to the fasteners). Furthermore, the integrity and aesthetics of the optical component 1 are maintained.

[0240] The optical component 21 is formed of plastic. When the optical component 21 is placed outside the base 1, the mounting wall 2122 of the optical component 3 can be deformed by heat pressing to form a bent portion 21221, thereby completing the fixation.

[0241] In other embodiments, when the optical component 21 is sleeved on the outside of the base 1 , the mounting wall 2122 and the side wall 11 of the base 1 may also be fixed by buckles, fasteners, etc.

[0242] The above-mentioned method of setting the mounting wall 2122 of the optical component 21 outside the side wall 11 and fixing it can simplify the structure, thereby reducing the frame of the lamp, improving the aesthetics and light output effect, and reducing the dark area caused by the frame.

[0243] The mounting unit can also be composed of a separate component. As shown in Figures 69 to 72, and in conjunction with Figures 79 to 82, the mounting frame 5 includes several support members 51. These support members 51 are positioned around the outer edges of the optical component 21 and / or the base 1 to provide support for the optical component 21 and the base 1, thereby enhancing the structural strength of the entire lamp. In other words, the support members 51 form the outer frame of the LED lighting device.

[0244] The support member 51 includes a first wall 511, which is attached to the surface of the optical component 21 in the thickness direction of the LED lighting device, and the first connecting wall 2113 at the edge of the optical component 21 is clamped between the support member 51 and the mounting end wall 13 extending outward from the side wall 11 of the base 1, that is, the optical component 21 is clamped and fixed by the mounting frame 5 (or the support member 51) and the base 1 (or the end wall 13 on the base 1).

[0245] The support member 51 may further include a second wall 512 having a stopper 5121 thereon. The mounting end wall 13 includes a force-supporting member 131, which fits into the space formed between the stopper 5121 and the first wall 511, and forces the first connecting wall 2113 at the edge of the optical component 21 to be pressed between the mounting end wall 13 and the first wall 511, thereby securing the three. In other words, when the base 1 and the support member 51 are mated, the force-supporting member 131 fits between the first wall 81 and the stopper 5121 in an interference fit, thereby securing the base 1, the optical unit 2, and the support member 51. Furthermore, when the force-supporting member 131 is compressed between the stopper 5121 and the first wall 511, the mounting end wall 13 presses against the first connecting wall 2113 at the edge of the optical component 21, thereby securing the base 1, the optical unit 2, and the support member 51 as a whole.

[0246] The mounting end wall 13 includes a fitting portion 132 that fits in contact with the first connecting wall 2113 at the edge of the optical member 21, and an extension portion 133 that does not fit in contact with the first connecting wall 2113 at the edge of the optical member 21. The distance between the extension portion 133 and the first wall 812 is smaller than the distance between the fitting portion 132 and the first wall 812. In other words, since the first connecting wall 2113 at the edge of the optical member 21 is not provided, there is a certain gap between the extension portion 133 and the first wall 511. Therefore, when the force-pushing member 131 is inserted between the stop portion 5121 and the first wall 511 by external force, the extension portion 133 connected to the force-pushing member 131 has space to deform toward the first wall 812, thereby facilitating the force-pushing member to fit between the stop portion 5121 and the first wall 511. Furthermore, the provision of the extension portion 133 allows deformation of the force-supporting member 131 when it is inserted between the stop portion 5121 and the first wall 511 to occur in the force-supporting member 131 and the extension portion 133, thereby preventing the force-supporting member 131 from being damaged or unable to be properly inserted between the stop portion 5121 and the first wall 511 due to concentrated deformation occurring on the force-supporting member 131.

[0247] The end of the force-supporting member 131 abuts against the stop portion 5121, and at least a portion of the main body of the force-supporting member 131 can maintain a gap with the second wall 512, so that the force-supporting member 131 can have sufficient elastic deformation to maintain sufficient force on the stop portion 5121 to prevent the force-supporting member 131 from slipping out from between the stop portion 5121 and the first wall 511.

[0248] The distance between the end of the force-supporting member 131 and the second wall 512 is the shortest, and the distance between the force-supporting member 131 and the second wall 512 gradually increases in the direction of the force-supporting member 131 toward the mounting end wall 13 .

[0249] The support member 51 may be formed by sheet metal, for example, by bending a thin sheet of material, or may be a profile formed by extrusion.

[0250] There are multiple groups of support members 51 , and adjacent support members 51 can be fixed by welding.

[0251] In the thickness direction of the LED lighting device, the support member 51 does not extend beyond the space defined by the optical member 21, thus not adding to the thickness of the LED lighting device. When the LED lighting device is mounted on a horizontal surface and emitting light downward, the lower surface of the first wall 511 of the support member 51 is flush or substantially flush with the lower surface of the optical member 21.

[0252] 1 to 4 , the optical unit 211 in this embodiment includes a plurality of first optical components 2111 (translucent components) and a second optical component 2112 surrounding the outer periphery of the first optical component 2111. The light generated by the light source assembly 20 when in operation can pass through the first optical component 2111. The light source assembly 20 includes a plurality of LED arrays 203, each of which includes at least one LED lamp bead 201. In this embodiment, each LED array 203 includes a plurality of LED lamp beads 201. The LED array 203 corresponds to the first optical component 2111, that is, the LED array 203 is configured in a one-to-one correspondence with the first optical component 2111, and the same number of the two are provided. In other embodiments, the number of first optical components 2111 can also be set to be greater than the number of LED arrays 203.

[0253] In this embodiment, the LED lamp beads 201 in the LED array 203 correspond only to the first optical component 2111. That is, the lamp beads 201 in the LED array 203 (or the LED array 203) are completely covered by the first optical component 2111. At least a portion of the light generated by the LED lamp beads 201 in the LED array 203 during operation is emitted from the first optical component 2111. In other words, at least a portion of the light generated by the LED array during operation is directly emitted from the first optical component. Specifically, in this embodiment, the first optical component 2111 has a first light-emitting surface 21111. A distance exists between the first light-emitting surface 21111 and the LED lamp beads 201 in the LED array 203. Light generated by the LED lamp beads 201 during operation is emitted from the first light-emitting surface 21111.

[0254] 6 and 7 , in this embodiment, the plurality of LED lamp beads 201 of the LED array 203 are arranged along a first direction. The first optical component 2111 (or the first light emitting surface 21111 ) is extended along the first direction.

[0255] 1 to 4 , in this embodiment, the first light-emitting surface 21111 has a main body 211111 extending along a first direction and tail portions 211112 located at both ends of the main body 211111 in the first direction. The cross-section of the main body 211111 (the cross-section in the width direction of the first light-emitting surface 21111) is arc-shaped, and the tail portion 211112 is configured as a curved surface, thereby providing the first light-emitting surface 21111 with a better light-emitting effect. Furthermore, compared to a flat surface, when light emitted by the LED lamp bead 201 hits the curved surface, light reflection is reduced, thereby improving light extraction efficiency and thereby increasing light effect. Furthermore, the first light-emitting surface 21111 is closer to the LED lamp bead 201 than the second optical member 2112. When the LED lamp bead 201 is operating, the first light-emitting surface 21111 reaches a higher temperature than the second optical member 2112. Therefore, the first light-emitting surface 21111 is curved to enhance structural strength and provide better resistance to deformation when heated. In other embodiments, the first light-emitting surface 21111 can also be configured as a spherical surface or a flat surface.

[0256] In one embodiment, the first optical component 2111 is configured to have a light diffusion function to increase the light output angle of the light source assembly 20 while avoiding light concentration that causes visual discomfort. In one embodiment, the first optical component 2111 has a light diffusion function due to its own material properties, such as using plastic or acrylic material. In one embodiment, the first optical component 2111 is coated with a diffusion coating or a diffusion film (not shown) on its surface to enable it to have a light diffusion function. Referring to Figures 1 and 2, in this embodiment, the optical unit 211 also has a number of second optical components 2112 (anti-glare components) corresponding to the first optical component 2111, and the second optical component 2112 is configured to reflect at least a portion of the light emitted from the first optical component 2111, and at least a portion of the light emitted from the first optical component 2111 is transmitted through the second optical component 2112. At least a portion of the light transmitted through the second optical member 2112 can be emitted from an adjacent second optical member 2112. Alternatively, at least a portion of the light transmitted through the second optical member 2112 can be reflected and emitted from the second optical member 2112. This prevents the formation of dark areas in the second optical member 2112, thereby improving the aesthetics of the LED lighting device when it is illuminated. Furthermore, the second optical member 2112 reflects at least a portion of the light emitted from the first optical member 2111, providing a certain light-blocking effect and reducing glare.

[0257] In some embodiments, at least part of the surface of the optical component 21 (or the optical unit 211, the first optical component 2111, the second optical component 2112) is provided with a micro-optical structure, such as a frosted surface or a prismatic surface, to enhance the light diffusion function of the optical component 21 (or the optical unit 211, the first optical component 2111, the second optical component 2112) and reduce glare.

[0258] Referring to Figure 4 , in this embodiment, in a cross-section along the width of the first optical member 2111, the first optical member 2111 has a bottom midpoint 21110. The bottom here refers to the bottom position of the first optical member 2111 when the LED lighting device is normally mounted on a horizontal surface and emitting light downward. As shown in the figure, midpoint 21110 refers to the midpoint of the cross-section along the width of the first optical member 2111. In a cross-section along the height of the LED lighting device, the second optical member 2112 has a proximal end 21122 and a distal end 21123. The proximal end 21122 is closer to the corresponding light source assembly 20 than the distal end 21123. The distal end 21123 is the lowest end of the second optical member 2112 along the height of the LED lighting device. The angle a formed by the line connecting midpoint 21110 and distal end 21123 with the lower end surface of the LED lighting device (the plane containing the second connecting wall 2114) is between 10 degrees and 45 degrees. Furthermore, the angle a formed between the line connecting the midpoint 21110 and the distal end 21123 and the lower end surface of the LED lighting device (the plane where the second connecting wall 2114 is located) is between 25 and 35 degrees. This can partially block the direct light emitted from the first optical member 2111, reducing glare. It should be noted that the above positional relationships, such as the midpoint, proximal end, and distal end, are based on the cross-sectional view shown in Figure 4.

[0259] The second optical member 2112 includes one or more sets of optical walls 21124 configured to both reflect and transmit light. The optical walls 21124 are disposed around the first optical member 2111. In this embodiment, a set of second optical members 2112 includes four sets of optical walls 21124, which are sequentially connected and are flat. In some embodiments, a set of second optical members 2112 may include only one set of optical walls 21124, each having a circular cross-sectional shape. The optical walls 21124 may be inclined surfaces, inclined relative to the bottom surface 10. As shown in Figures 10 and 16, in one embodiment, adjacent optical walls 21124 have smooth transitions, such as arc transitions, to avoid dark areas at the angles between adjacent optical walls 21124 and enhance reflection between adjacent optical walls 21124.

[0260] In one embodiment, the optical wall 21124 reflects at least a portion of the light directly emitted from the first optical member 2111 .

[0261] Referring to FIG. 4 , in this embodiment, the optical walls 21124 of adjacent second optical members 2112 are connected by a first connecting wall 2113. At least a portion of the light transmitted through the second optical members 2112 is emitted from the first connecting wall 2113 to prevent the formation of dark areas at the first connecting wall 2113. The thickness of the first connecting wall 2113 is greater than that of the optical walls 21124, providing greater connection strength. Furthermore, the thinner optical walls 21124 result in less light loss at the optical walls 21124.

[0262] 1 and 8 , in this embodiment, a reinforcing wall 2116 may be provided on the second optical member 2112 to enhance structural strength. Specifically, the reinforcing wall 2116 is provided between the optical walls 21124 of adjacent second optical members 2112. In other words, the optical walls 21124 of adjacent second optical members 2112 are connected by the reinforcing wall 2116. In this embodiment, the reinforcing wall 2116 is a thin-walled structure.

[0263] Referring to Figures 1 and 5, in this embodiment, the optical unit 211 also includes a second connecting wall 2114, and the mounting unit 212 is connected to the adjacent second optical component 2112 through the second connecting wall 2114. At least a portion of the light transmitted through the second optical component 2112 is emitted from the second connecting wall 2114 to avoid the formation of a dark area at the second connecting wall 2114.

[0264] Referring to Figures 12 and 14 , in some embodiments, the second connecting wall 2114 is adjacent to the mounting end wall 13. Furthermore, the surface of the second connecting wall 2114 is substantially flush with the mounting end wall 13 to enhance aesthetics. In this embodiment, a receiving portion 134 is provided on the mounting end wall 13, and the second connecting wall 2114 is positioned within the receiving portion 134, thereby ensuring that the surface of the second connecting wall 2114 is flush or substantially flush with the mounting end wall 13.

[0265] In this embodiment, the wall thickness of the first optical member 2111 and the second optical member 2112 is less than the wall thickness of the first connecting wall 2113 or the second connecting wall 2114. The first optical member 2111 is primarily used to output light from the light source assembly 20 (excessive wall thickness will increase light loss), while the second optical member 2112 is primarily used for reflection and transmission of light (excessive wall thickness will increase light loss). The first connecting wall 2113 and the second connecting wall 2114 are primarily used for structural connection and must ensure strength. Therefore, the above wall thickness settings can meet optical and structural requirements respectively.

[0266] In this embodiment, the optical component 21 is an integrated structure.

[0267] 1 to 6 , in this embodiment, the optical component 21 has a first area 2117 corresponding to the bottom surface 10 of the base 1, and a second area 2118 corresponding to the side wall 11. The second area 2118 is configured to be connected to the side wall 11. Specifically, the second area 2118 is configured with the aforementioned mounting unit 212. In this embodiment, when the LED lighting device is in operation, the light source assembly 20 is illuminated, and at least 80% of the area of ​​the first area 2117 has light emitted to obtain a more uniform light output. Further, when the LED lighting device is in operation, the light source assembly 20 is illuminated, and at least 90% of the area of ​​the first area 2117 has light emitted to obtain a more uniform light output. Further, when the LED lighting device is in operation, the light source assembly 20 is illuminated, and all areas on the first area 2117 have light emitted to obtain a uniform light output.

[0268] In this embodiment, the first region 2117 may include the aforementioned first optical member 2111 , the second optical member 2112 , the first connecting wall 2113 , and the second connecting wall 2114 .

[0269] 6 and 7 , the circuit boards 202 in this embodiment may be provided in multiple groups, and each group of circuit boards 202 may be provided with one or more groups of LED arrays. This embodiment further includes an electrical connection unit 204, through which the LED lamp beads 201 on different circuit boards 202 are electrically connected. In some embodiments, the electrical connection unit 204 is a wire. In some embodiments, the electrical connection unit 204 is a flexible circuit board, and the flexible circuit board is directly welded and fixed to the circuit board 202. Specifically, the electrical connection unit 204 is attached to the circuit board 202 and directly welded to multiple groups of circuit boards 202 to achieve electrical connection. In some embodiments, the electrical connection unit 204 is connected using a PCB board.

[0270] Referring to Figure 5, in this embodiment, the optical units 211 can be provided in multiple groups, for example, 2 groups or 4 groups. Adjacent optical units 211 are connected by a third connecting wall 2115. An accommodating space is formed between the third connecting wall 2115 and the bottom surface 10, and the power supply 3 is arranged in the accommodating space. Since the power supply 3 is arranged inside the LED lighting device, compared with setting the power supply 3 outside the base 1, the power supply 3 will not occupy additional height space of the LED lighting device, and the height of the LED lighting device can be reduced. In this embodiment, the height of the LED lighting device is less than 35 mm. Furthermore, the height of the LED lighting device is less than 30 mm. Furthermore, the height of the LED lighting device is between 20 mm and 30 mm.

[0271] Referring to Figures 76 to 79, in one embodiment, the LED lighting device includes at least one power supply 3, which is disposed outside the accommodating space 12 formed by the bottom surface 10 and the side wall 11. More specifically, it is disposed on the outer side of the side wall 11, facing away from the accommodating space 12. As shown in Figure 76, the power supply 3 is disposed on the side wall 11 and is shielded from the light emitting direction of the LED lighting device by the mounting frame 5 and the side wall 11. That is, in the direction opposite to the light emitting direction of the LED lighting device, the projection of the mounting frame 5 and the side wall 11 completely or at least partially covers the power supply 3. When fully covered, the power supply 3 cannot be observed after the LED lighting device is installed in the operating environment, thereby improving the aesthetics of the LED lighting device. On the other hand, the power supply 3 is arranged outside the accommodating space 12 between the side wall 11 and the mounting frame 5, in a redundant space that has to be formed due to the structural design. The redundant space is reused to set the power supply 3 without increasing the size of the LED lighting device. At the same time, the power supply 3 is arranged outside the side wall 11. The heat generated by the power supply 3 when working can be directly dissipated through the external air environment, thereby improving the heat dissipation capacity of the equipment and preventing the heat generated by the power supply 3 when working from affecting the operation of other components of the LED lighting device.

[0272] As shown in FIG77 , the power supply 3 is positioned closely against the side wall 11. The upper and lower height limits of the power supply 3 do not exceed the bottom surface 10 or the mounting frame 5. The height of the power supply 3 is less than or equal to the total height of the LED lighting device. In terms of height, the power supply 3 is limited to the space formed by the two planes at which the mounting frame 5 or the optical component 21 and the bottom surface 10 are at their maximum distance, i.e., the space between the plane at the highest height of the mounting frame 5 or the optical component 21 along the light emitting direction and the plane at the lowest height of the bottom surface 10 along the opposite direction of the light emitting direction. In this embodiment, the power supply 3 is positioned closely against the side wall 11. The power supply 3 includes a power supply board 31 and electronic components 32. The electronic components 32 are disposed on the power supply board 31.

[0273] The power supply 3 may further include a power supply box 33 (as shown in FIG. 78 ). The power supply box 33 is disposed on the outside of the side wall 11 and has an inclined surface that matches the inclination of the side wall 11. The inclined surface cooperates with the side wall 11 to form a relatively enclosed space for accommodating the power supply 3, the power supply board 31, and the electronic components 32. In this embodiment, the power supply 3 can be disposed along the width or length of the LED lighting device, and the number of power supplies 3 is at least one. In one embodiment, the power supply box 33 and the side wall 11 share at least one surface, thereby reducing the cost of the lamp.

[0274] Refer to Figure 78 for a schematic diagram of the LED lighting device in the forward direction (light emitting direction facing downward) and Figure 79 for an exploded view of the LED lighting device in the reverse direction (light emitting direction facing upward). As shown in Figures 78 and 79, the LED lighting device includes a base 1 as a mounting base. The base 1 includes a bottom surface 10 arranged substantially parallel to a horizontal plane, and side walls 11 arranged around the bottom surface 10. The angle between the side walls 11 and the bottom surface 10 is greater than or equal to 90°, and the bottom surface 10 and the side walls 11 form a receiving space 12. The angle between the side walls 11 and the bottom surface 10 is greater than or equal to 90°. A mounting end wall 13 is provided at one end of the side wall 11 away from the bottom surface 10. The mounting end wall 13 is formed by the side wall 11 extending outward in a direction substantially parallel to the bottom surface 10.

[0275] Refer to Figures 77, 78, 79 and 83, where as shown in Figure 77, a reinforcement unit 1012 is provided on the base plate 1, and the reinforcement unit 1012 includes a first reinforcement structure 10121 and a second reinforcement structure 10122. The first reinforcement structure 10121 and the second reinforcement structure 10122 are integrally extended or stamped from the bottom surface 10, and form a convex structure along the light-emitting direction away from the LED, and form a groove structure along the light-emitting direction of the LED lighting device, and the convexity and the groove have a certain height relative to the bottom surface 10. The first reinforcement structure 10121 and the second reinforcement structure 10122 are used to make the bottom surface 10 have a three-dimensional spatial structure, thereby improving the overall strength of the bottom surface 10 without adding additional materials.

[0276] In the present application, the first reinforcement structure 10121 and the second reinforcement structure 10122 have an intersection, that is, the first reinforcement structure 10121 and the second reinforcement structure 10122 are interconnected, and the first reinforcement structure 10121 and the second reinforcement structure 10122 are raised relative to the bottom surface 10 in the opposite direction of the light emitting direction of the LED lighting device, forming grooves along the light emitting direction of the LED lighting device, and the grooves are interconnected and connected to form a heat dissipation channel distributed in a mesh structure, covering most of the area of ​​the bottom surface 10. For example, in one embodiment, the mesh heat dissipation channel covers more than 50% of the area of ​​the bottom surface 10. On the back side of the bottom surface 10, that is, the side away from the light emitting direction, there is a raised mesh heat dissipation channel, which can also be called a heat dissipation protrusion or heat dissipation fin, which increases the heat dissipation area of ​​the LED lighting device and improves the heat dissipation efficiency of the LED lighting device.

[0277] In one embodiment of the present application, the first reinforcement structure 10121 and the second reinforcement structure 10122 are perpendicular to each other.

[0278] Referring to Figures 78, 79, and 83, the LED lighting device also includes a light source assembly 20, which includes a plurality of LED arrays 203. The LED array 203 includes at least one LED lamp bead 201. The LED lamp bead 201 (LED array 203) is fixed to a circuit board 202, and the circuit board 202 is fixed to the bottom surface 10 of the base 1. The circuit board 202 can be disposed in the groove formed by the reinforcing unit 1012 as described above, or it can be disposed directly on the bottom surface 10 without being disposed in the groove formed by the reinforcing unit 1012. In some embodiments, the circuit board 202 is directly fixed to the bottom surface 10 of the base 1 by bonding. In some embodiments, the light source assembly 20 can be clamped to the bottom surface 10 of the base 1 via the circuit board 202. In some embodiments, the light source assembly 20 can be directly fixed to the bottom surface 10 of the base 2 by welding. In the above embodiments, the light source assembly 20 forms a heat conduction path with the bottom plate of the base 1, so that the heat generated by the LED lamp beads 201 during operation can be quickly conducted to the base 1 and dissipated through the base 1 to improve the heat dissipation efficiency.

[0279] In one embodiment of the present application, each LED array 203 includes at least two types of LED lamp beads 201, and the at least two LED lamp beads can realize at least two dimming and color adjustment functions. For example, the dimming and color adjustment of the LED lighting device can be controlled by controlling at least two columns of LED lamp beads 201 with different functions in the LED array 203.

[0280] In one embodiment of the present application, the light source assembly 20 is provided with at least two groups of LED arrays 203 with different functions, that is, the single LED arrays 203 have the same function, but include at least two single LED arrays 203 with different functions, and the dimming and color adjustment of the LED lighting device are achieved by controlling different LED arrays.

[0281] In one embodiment, adjacent LED lamp beads 201 are arranged in an interlaced manner, which can reduce power consumption while also meeting lighting requirements.

[0282] Referring to FIG80 , FIG80 is an enlarged view of point S in FIG79 , which is a partial enlarged view of the mounting end wall 13 . As shown in the figure, the mounting end wall 13 includes a support portion 136 that is parallel or substantially parallel to the bottom surface 10 . The support portion 136 is provided with a through hole 137 . The through hole 137 is used to receive a fixing member such as a screw, bolt, or rivet for fixing other components of the LED lighting device, such as the power supply 3 , the optical member 21 , or the mounting frame 5 . The support portion 136 can be used to support the mounting frame 5 (or support member 51 ), the optical member 21 , or other components of the LED lighting device. It is worth noting that the mounting end wall 13 also includes a stopper 135 , which is greater than the stopper 136 in the light emitting direction. The stopper 135 is formed by bending the extension portion 120 of the side wall 11 and is integrally formed with the support portion 136 . The stopper 135 is a curved protrusion when viewed horizontally and surrounds the bottom surface 10 .

[0283] Referring to FIG81 , FIG81 is a schematic cross-sectional view of an optical component 21 in an embodiment of the present application. As shown in FIG81 , the optical component 21 includes a plurality of first optical components 2111 and a second optical component 2112 arranged in an array, wherein the first optical component 2111 is circular or elliptical, or is convex in a certain direction to form a hollow structure, forming a non-sealed cavity. The optical component 21 has a first connecting wall 2113 arranged around the optical component 21. The first connecting wall 2113 extends integrally to the optical component 21 and is roughly parallel to the bottom surface 10. A positioning portion 21131 corresponding to the limiting portion 135 is provided at the edge of the first connecting wall 2113. The positioning portion 21131 is located outside the limiting portion 135 in the projection direction of the light emitting direction and is formed by bending the first connecting wall 2113.

[0284] Referring to Figure 82, which is a partial enlarged view of point T in Figure 81, it is used to more clearly illustrate the structure of the positioning portion 21131. As shown in the figure, the first connecting wall 2113 has a generally arc-shaped positioning portion 21131 extending outwardly, protruding toward the first optical component 2111, or toward the bottom surface 10. During installation, the optical component 21 is stacked on the base 1, with the first connecting wall 2113 supported by the mounting end wall 13. The positioning portion 21131 on the first connecting wall 2113 mates with the limiting portion 135 on the end wall, with the positioning portion 21131 located on the outside and the limiting portion 135 located on the inside, thereby enabling rapid alignment of the optical component 21 with the base 1. Furthermore, in the light emission direction, the limiting portion 135 and the positioning portion 21131 at least partially overlap in height, thereby reducing the overall height of the LED lighting device.

[0285] In this embodiment of the present application, the first optical member 2111, the second optical member 2112, the first connecting wall 2113, and the positioning portion 21131 of the optical member 21 are all integrally formed, for example, by integral plastic injection molding, thermoforming, vacuum forming, hot pressing, or the like, and have a light transmittance of greater than or equal to 50%, and more preferably greater than or equal to 80%. Of course, the optical member may also be made of other common light-transmitting materials, such as acrylic or glass.

[0286] Referring to FIG. 83 , a simplified schematic diagram of a light source assembly 20 in one embodiment of the present application is shown, wherein the light source assembly 20 includes a circuit board 202 and at least one LED array 203 disposed on the circuit board 202, each LED array 203 including at least one LED lamp bead 201. The circuit boards 202 are connected via an electrical connection unit 204. In this embodiment of the present application, the electrical connection unit 204 is an FPC; of course, in other embodiments, the electrical connection unit 204 may also be a PCB, a metal sheet / foil (such as a copper sheet / foil, an aluminum sheet / foil, a silver sheet / foil, etc.), a wire, a guide wire, etc.

[0287] Referring to FIG84 , FIG84 is a schematic diagram illustrating the positional relationship between LED lamp beads and optical components in an embodiment of the present application. As shown in the figure, the LED lamp beads 201, or rather, the LED array 203 disposed on the circuit board 202, are covered by the first optical component 2111. That is, the first optical component 2111 and the bottom surface 10 form a relatively enclosed space for accommodating the LED lamp beads 201. In this embodiment of the present application, two rows of LED lamp beads 201 are disposed on the circuit board 202. The center line is the midpoint of the two side-by-side LED lamp beads 201, and a single-sided illumination angle A' exists from the center line to the outermost layer that can be illuminated by an LED lamp bead 201. The angle A' is between 60° and 80°. The distance between the LED lamp bead 201 and the first optical component 2111 in the direction of light emission is H', and the range of H' is 16mm-20mm, preferably 19.2mm. In this embodiment, the maximum light output angle of the LED array 203 can reach 160°. After the light from the LED array 203 is diffused or reflected by the first optical component 2111 and reflected by the second optical component 2112, the final light output angle can be greater than 160°, for example, 165°, 170°, 175°, etc., thereby improving the light output angle and uniformity. Furthermore, the UGR of this LED lighting device is ≤ 22. The UGR value, also known as the unified glare value, can be used to evaluate lighting quality to a certain extent. The unified glare value is calculated as follows:

[0288] Among them, L b is the background brightness, in cd / m 2 ;

[0289] ω is the solid angle formed by the luminous part of each lamp to the observer's eyes, the unit is sr;

[0290] L α is the brightness of the lamp in the direction of the observer's eyes cd / m 2 ;

[0291] P is the position index of each individual luminaire;

[0292] In this application, L is controlled by controlling the light intensity, light emitting surface shape, lamp thickness, etc. b ,ω,L α , P, thereby controlling the uniform glare value (i.e., UGR value) of the lamp to ensure the light quality and user comfort of the lamp. The solid angle is the projected area of ​​any object onto a unit sphere constructed with the observation point (i.e., the human eye) as the center of the sphere, which is the solid angle of the object relative to the observation point.

[0293] Referring to Figure 85, which is an exploded schematic diagram of the mounting frame 5, in this embodiment of the present application, the mounting frame 5 is composed of four support members 51. The support members 51 are strip-shaped structural members with beveled edges at both ends. The beveled edges have an angle of 45°, i.e., the support members 51 are trapezoidal. The support members 51 are connected end to end, forming a rectangle. i.e., the beveled surfaces at both ends of a support member 51 and the beveled edges at both ends of another support member 51 form a right angle.

[0294] As shown in Figure 86, which is a cross-sectional schematic diagram of the installation frame 5 in an embodiment of the present application, it can be seen from its cross-section that the support member 51 constituting the installation unit has at least one step structure, and the step structure cooperates with the aforementioned limiting portion 135 and the positioning portion 21131 to achieve the fixation between the base 1 and the optical component 21 of the LED lamp.

[0295] Refer to Figure 87, refer to Figure 88 and Figure 89, Figure 87 is a partial enlarged view of the position U in Figure 86, Figure 88 is a cross-sectional schematic diagram of the LED lighting device in an embodiment of the present application, and Figure 89 is a partial enlarged view of the position V in Figure 88. As shown in the figure, the support member 51 includes a first wall 511. After the LED lighting device is assembled, the first wall 511 faces away from the light emitting direction of the LED lighting device. A plurality of step structures 5122 are provided on the first wall 511, and at least one locking groove 51223 is also provided on the step structure 5122. The step structure 5122 is arranged along the width direction of the support member 51 or the first wall 511, and extends along the length direction of the support member 51.

[0296] The support member 51 and the mounting end wall 13 of the side wall 11 of the base 1 clamp and secure the optical component 21. Specifically, referring to FIG89 , as shown in FIG89 , the base 1 serves as the mounting base for the LED lighting device, and the optical component 21 is superimposed on the base 1. The first connecting wall 2113 of the optical component 21 rests on the mounting end wall 13 of the base 1, and the positioning portion 21131 engages with the limiting portion 135. The limiting portion 135 is located inside the positioning portion 21131 and is directly formed by the base 1. During assembly, the limiting portion 135 can effectively limit movement of the optical component 21, such as lateral offset. At least a portion of the wall of the step structure 5122 perpendicular to the first wall 511 (such as the first extension wall 51222 described later) of the mounting frame 5 rests against the extension of the supporting portion 136 (that is, the end of the supporting portion 136 away from the lamp body), and the supporting portion 136 is packaged to a certain extent, with a portion arranged on the surface of the supporting portion 136. At the same time, the locking groove 51223 corresponds to the through hole 137 on the supporting portion 136, and a locking thread is provided on the inner wall of the locking groove 51223. Screws, bolts or rivets pass through the through hole 137 to reach the locking groove 51223, so that the mounting frame 5 can be fixed on the mounting end wall 13. A portion of the first wall 511 of the mounting frame 5 covers the optical component 21 and completely covers the positioning portion 21131. When the mounting frame 5 is fixed by a fixing structure of screws, bolts or rivets, the mounting frame 5 has pressure toward the end 13, that is, the first wall 511 presses the optical component 21, thereby achieving the fixation of the base 1, the optical component 21 and the mounting frame 5.

[0297] The positioning portion 21131 is a groove structure. In another embodiment of the present application, the groove structure may be filled with an adhesive material to bond the optical component 21 and the first wall 511 of the mounting frame 5 .

[0298] 46 to 53 , in one embodiment, the difference between the width of the third connecting wall 2115 and the width of the first connecting wall 2113 does not exceed 15 mm, 12 mm, 10 mm, or 8 mm. When the difference between the width of the third connecting wall 2115 and the width of the first connecting wall 2113 is controlled within the aforementioned range, the overall consistency of the optical component 21 can be improved, thereby enhancing the visual effect.

[0299] As shown in Figures 46 to 53 , the power supply 3 extends along the length of the LED lighting device. Furthermore, the power supply 3 can be positioned in the middle of the width of the LED lighting device. Because the power supply 3 inherently possesses a certain degree of structural strength, its placement within the base 1 further enhances the structural strength of the base plate 1. The power supply 3 is positioned between the corresponding optical walls 21124 of the two corresponding sets of second optical members 2112.

[0300] The power supply 3 includes a power board 31 and electronic components 32 . The electronic components 32 are disposed on the power board 31 . The power board 31 can be directly or indirectly attached to the front surface of the base 1 .

[0301] The power supply 3 may further include a power box 33 , which is disposed on the front side of the base 1 (i.e., the side facing the light emitting direction of the lamp), and a receiving space is formed between the power box 33 and the base 1 for accommodating the power board 31 and the electronic components 32 .

[0302] The power supply 3 is positioned between the two light source assemblies 20. A light redirection unit 331 is located outside the power supply box 33 to redirect light from the light source assemblies 20 to the power supply box 33 and ultimately out of the LED lighting device. This reduces light absorption by the power supply 3 and improves light extraction efficiency. The light redirection unit 331 is configured with reflective and / or light diffusion functions.

[0303] In some embodiments, the outer surface of the power box 33 directly forms the light redirecting unit 331 .

[0304] In this embodiment, a separate component is disposed outside the power supply box 33 to form a light redirection unit 331. The length of the power supply box 33 is configured to be less than half the length of the LED lighting device. The length of the light redirection unit 331 is greater than or equal to the length of the power supply box 33. Furthermore, one end of the light redirection unit 331 engages (abuts) against a side portion of one side of the base 1, while the other end engages (abuts) against a side portion of the other side of the base 1. This configuration of the light redirection unit 331 can reduce the impact of the power supply 33 on the localized light output of the optical component 21.

[0305] As shown in Figures 46 to 53 , a distance is maintained between the light redirection unit 331 and the optical member 21, forming a light channel 3311. The minimum distance between the light redirection unit 331 and the optical member 21 is 2.5 mm. In other words, the distance between any point on the light redirection unit 331 and any point on the optical member 21 is greater than or equal to 2.5 mm. A smaller distance would affect the reflection and diffusion of light within the light channel 3311. The minimum distance between any point on the light redirection unit 331 and any point on the optical member 21 is no more than 12 mm, facilitating control of the overall size of the LED lighting device.

[0306] 46 to 53 , the light channel 3311 includes a first light channel 33111 and a second light channel 33112 connected thereto. The first light channel 33111 is formed between the side surface 3312 of the light redirecting unit 331 and the optical wall 21124 of the second optical member 2112. The side surface 3312 of the light redirecting unit 331 and the optical wall 21124 of the second optical member 2112 are arranged parallel or substantially parallel to each other. The second light channel 33112 is formed between the top surface 3313 of the light redirecting unit 331 and the third connecting wall 2115. The top surface 3313 of the light redirecting unit 331 and the third connecting wall 2115 are arranged parallel or substantially parallel to each other. In this embodiment, the distance between the side surface 3312 of the light redirecting unit 331 and the optical wall 21124 of the second optical component 2112 is smaller than the distance between the top surface 3313 of the light redirecting unit 331 and the third connecting wall 2115, so that more light can be emitted from the third connecting wall 2115 through the second light channel 33112, thereby reducing the dark area formed at the third connecting wall 2115.

[0307] The electronic components 32 have length, width, and height dimensions. Referring to FIG. 52 , the electronic components 32 include at least two different types of electronic components 32 , each having a length greater than its width. The length direction of the electronic components 32 extends along the length of the circuit board 202 , thereby reducing the overall width required for the power supply 3 . The two different types of electronic components 32 may include electrolytic capacitors and transformers. At least some of the electronic components 32 (such as capacitors, ICs, or resistors) have a length greater than their width, and their length direction extends along the width of the circuit board 202 . This reduces the overall length required for the power supply 3 and facilitates control of the length of the power supply 3 . At least some of the electronic components 32 (such as transformers, capacitors, or resistors) have a height less than their width, and their height direction extends along the thickness of the circuit board 202 . This reduces the overall height of the power supply 3 and minimizes the impact of the power supply 3's configuration on light output.

[0308] Referring to Figures 52, 54 to 56, in one embodiment, the length dimension of the power supply 3 accounts for more than one-fifth of the length dimension of the LED lighting device. In one embodiment, the length dimension of the power supply 3 accounts for more than two-fifths of the length dimension of the LED lighting device. The size of the power supply 3 referred to here can be the length of the power supply board 41 (the size of the power supply board 31 in the length direction of the circuit board 202), or it can be the size occupied by the power supply 3 between the two most side electronic components 32 in the length direction of the circuit board 202 (this size includes the two electronic components 32 themselves). In this way, the power supply 3 can be distributed over a wider area on the base 1 to correspond to the larger area of ​​the base 1, so as to facilitate the improvement of heat dissipation performance.

[0309] 52 and 54 to 56 , the power board 31 has a first surface 311 and a second surface 312, wherein the first surface 311 is a surface that is attached to or corresponds to the bottom of the power box 33, and the bottom of the power box 33 is attached to the base 1, and the second surface 312 is the other surface of the power board 31 opposite to the first surface 311. In this embodiment, electronic components 32 are provided on both the first surface 311 and the second surface 312. Among them, the electronic components 32 on the first surface 311 include one or more heating elements 321 (such as resistors, ICs). The heat generated by the heating elements 321 on the first surface 311 during operation can be transferred to the power box 33 more quickly and dissipated through the base 1. At least one heating element 321 on the first surface 311 can be in thermal contact with the bottom of the power box 33 to form a heat conduction path, thereby improving the heat dissipation efficiency. In some embodiments, the distance between any electronic component 32 on the first surface 311 and the bottom of the power box 33 does not exceed 4 mm or 3.5 mm, thereby increasing the heat transfer efficiency between the electronic component 32 and the bottom of the power box 33 .

[0310] In some embodiments, the power box 33 is made of metal to facilitate faster transfer of heat generated by the heating element 321 during operation to the power box 33 and then to the base 1 .

[0311] Referring to Figures 52 and 54 to 56 , a thermally conductive material 3111 is disposed on the first surface 311. The thermally conductive material 3111 is a material with a high thermal conductivity (e.g., iron, aluminum, copper, tin, or alloys primarily composed of these materials, as used in the prior art), or the thermal conductivity of the thermally conductive material 3111 is at least greater than the thermal conductivity of the power supply board 31. For example, if the thermally conductive material 3111 is tin or thermally conductive adhesive, and the power supply board 31 is a non-metallic sheet material such as fiberglass board or epoxy resin board, the thermal conductivity of the thermally conductive material 3111 is greater than that of the power supply board 31. The electronic components 32 on the second surface 312 include heating elements 322 (e.g., transformers, inductors, and integrated circuits). The heating elements 322 on the second surface 312 form a heat conduction path with the thermally conductive material 3111. In some embodiments, the heating elements 322 on the second surface 312 are connected to the thermally conductive material 3111 via their conductive pins, thereby forming a heat conduction path. The thermal conductive material 3111 can transfer heat to the bottom of the power box 33 through thermal radiation or thermal conduction.

[0312] Referring to Figures 52 and 54 to 56, in some embodiments, the number of electronic components 32 (especially heating components 321) on the first surface 311 is greater than that of electronic components 32 (especially heating components 321) on the second surface 312. Since the electronic components 32 on the first surface 311 are closer to the power box 33, heat can be dissipated more quickly to improve the overall heat dissipation efficiency of the power supply 3.

[0313] Referring to Figures 52 and 54 to 56 , in some embodiments, the number of electronic components 32 disposed per unit length (e.g., per 10 mm) on the second surface 312 of the power board 31 is less than 1, 0.9, 0.8, or 0.7. This allows for control of the density of the electronic components 32 along the length of the power board 31 when the width of the power board 31 is limited (if the width is too large, the corresponding increase in the size of the power box 33 will affect light output), thereby facilitating control of the spacing between the electronic components 32 and reducing thermal interactions between the electronic components 32 (particularly the heat-generating components). In addition, the effect of reducing the impact of heat can be further achieved through the configuration design of heating elements. For example, when the same side (first side 311 / second side 312) of the power circuit board 41 includes multiple electronic components 32 that generate high temperatures during operation, the electronic components 32 that generate high temperatures on the same side can be configured so that they are not adjacent to each other. For example, other electronic components 32 (such as capacitors and other components that generate less heat and are not easily affected by heat) are interspersed at intervals. In this way, the impact of the high temperature generated by the electronic components 32 on the operation of the lamp is further reduced.

[0314] 10 to 14 , in one embodiment, the power supply 3 may also be disposed on the back side of the bottom surface 10 . In this case, there is no need to provide an accommodation space on the optical unit 211 , i.e., there is no need to provide a third connecting wall 2115 (as shown in FIG. 3 and FIG. 5 ). This improves the continuity of the optical unit 211 and enhances the light output effect and the aesthetic appearance.

[0315] In one embodiment, the base 1 is further provided with a mounting end wall 13. The mounting end wall 13 is formed at the outer edge of the base 1 and connected to the side wall 11. The mounting end wall 13 is arranged parallel or substantially parallel to the bottom surface 10. The side wall 11 and the mounting end wall 13 form a receiving space (there is a height difference between the mounting end wall 13 and the bottom surface 10, and the power supply 3 is at least partially disposed within this height difference). The power supply 3 is at least partially located within the receiving space in the height direction, thereby reducing the height space occupied by the power supply 3 in the LED lighting device.

[0316] In one embodiment, at least half of the height of the power supply 3 is located within the accommodating space. The length of the power supply 3 accounts for 80%, 85%, 90%, or 95% or more of the length of the base 1. In this way, the power supply 3 can increase the structural strength of the base 1 in the length direction.

[0317] Referring to Figures 21 to 25, in one embodiment, the power supply is arranged between the base 1 and the optical component 21. Specifically, the surface of the base 1 is protruded outward (toward the back of the base 1) to form a bottom groove 101, and the bottom groove 101 forms a bottom groove cavity 1013 on the front of the base 1. The power supply can be partially or completely located in the bottom groove cavity 1013. Furthermore, a groove cavity cover 102 can be provided on the base 1, and the groove cavity cover 102 is covered on the bottom groove cavity 1013, thereby forming an accommodating cavity 1014 between the bottom groove cavity 1013 and the groove cavity cover 102. The power supply is located inside the accommodating cavity 1014. The groove cavity cover 102 is protruded on the front of the base 1, and therefore, the volume of the accommodating cavity 1014 is larger than the volume of the bottom groove cavity 1013.

[0318] In the above embodiment, the power supply does not need to be provided with an additional separate power supply box, which can simplify the structure and save costs.

[0319] As shown in Figures 26 and 27, in some embodiments, a group of bottom grooves 101 are provided. When two groups of LED lighting devices are stacked back to back, if one of the groups of LED lighting devices is rotated by a certain angle (e.g., 90 degrees, 180 degrees, or 270 degrees), the bottom grooves 101 of the two groups of LED lighting devices are offset so that the total height of the two groups of LED lighting devices when stacked back to back is less than twice the height of a single group of LED lighting devices. Therefore, when two or more groups of LED lighting devices are stacked in this manner, the packaging size can be reduced, thereby lowering shipping costs. In this embodiment, a coordinate system is established on the back of the LED lighting device, with the center of the LED lighting device as the origin. The bottom grooves 101 can be completely located in one quadrant (as shown in Figure 27) or completely located in both quadrants (as shown in Figure 26).

[0320] As shown in FIG. 28 , in some embodiments, two groups of bottom grooves 101 are provided, with a groove gap 1015 between the two groups of bottom grooves 101. The two groups of bottom grooves 101 can extend in the same direction, for example, along the length or width of the LED lighting device. When the two groups of LED lighting devices are stacked back-to-back, one group of LED lighting devices is rotated 90 degrees, and the bottom grooves 101 of the two groups of LED lighting devices are offset so that the total height of the two groups of LED lighting devices when stacked back-to-back is less than twice the height of a single group of LED lighting devices. The provision of the groove gap 1015 prevents interference between the two groups of bottom grooves 101 when the two groups of LED lighting devices are stacked back-to-back. In this embodiment, the groove gap 1015 is located at the center of the base 1, and its dimension in the direction of extension of the bottom groove 101 is greater than the width of the bottom groove 101.

[0321] As shown in Figures 25, 29, and 30, in this embodiment, the bottom surface groove 101 is located in the middle of the length or width direction of the LED lighting device (base 1), so that the overall structure of the LED lighting device is generally symmetrical. In this embodiment, a set of groove cavity covers 102 respectively cooperate with the two sets of bottom surface groove cavities 1013. The groove cavity covers 102 are provided with insertion walls 1051, and the base 1 is provided with corresponding insertion holes 1016. When the insertion walls 1051 on the groove cavity covers 102 are inserted into the insertion holes 1016 of the base 1, the groove cavity covers 102 can be fixed to the base 1.

[0322] The distance between the LED lamp bead 201 and the groove cavity cover 102 is controlled to be greater than 15 mm. In addition, the angle a between the side wall of the groove cavity cover 102 and the surface of the base 1 can be controlled to be greater than 120 degrees. This can prevent or reduce the impact of the groove cavity cover 102 on the light output of the LED lamp bead 201.

[0323] Referring to Figure 14 , the LED lighting device in one embodiment may further include a hanger 4, which is configured to mount the LED lighting device to a ceiling bracket (commonly known as a keel). The hanger 4 can be made of metal, such as copper or iron, and may take different forms or include different components in different embodiments. For example, the hanger 4 may include one or more of a swivel fastener, a hook, and a corner guard. The hanger 4 is fixedly connected to the base 1. More specifically, one end is fixed to the mounting end wall 13, while the other end can be bent accordingly to allow it to be hung on the bracket.

[0324] In this embodiment, the height of the first optical member 2111 is no more than half the height of the second optical member in the height direction of the LED lighting device. This reduces the amount of light that is directly emitted from the LED lighting device from the sides of the first optical member 2111. In other words, more of the light emitted from the first optical member 2111 is redirected by the second optical member 2112, thereby adjusting the light output of the LED lighting device.

[0325] Referring to Figures 14, 17 to 20, the LED lamp beads 201 of the LED array 203 have a beam angle of A. The definition of the beam angle (the angle formed by the two sides where the light intensity reaches 50% of the normal light intensity is the beam angle) is prior art and will not be repeated here. Optionally, the value of the beam angle A can be between 100 and 130 degrees. The LED lamp beads 201 are projected onto the inner surface of the first optical component 2111 within the boundary of the beam angle A, and form a projection area m on the inner surface of the first optical component 2111 (the projection area m is a curved surface, a flat surface, or other irregular surface), and the area of ​​the projection area m is greater than 500 square millimeters. To avoid a grainy effect on the first optical component 2111 when the LED lamp beads 201 are lit, the light intensity on the projection area m should be less than 50,000 lux without considering the influence of adjacent LED lamp beads 201.

[0326] The size of the projection area m depends on the distance from the LED lamp bead 201 to the first optical component 2111. When the distance is larger, the thickness of the optical unit 3 will be larger (which will increase the thickness of the entire lamp), which is not conducive to cost control. When the distance is smaller, the area of ​​the projection area m may be less than 500 square millimeters, making it difficult to control the illumination and forming a grainy feeling. Therefore, in this embodiment, the distance from the LED lamp bead 201 to the first optical component 2111 is controlled between 6 and 15 mm. Moreover, without considering the influence of the adjacent LED lamp beads 201, the light intensity on the projection area m is greater than 10,000 lux. When the projection area m is non-planar, the shortest distance from the center of the surface of the LED lamp bead 201 to the first optical component 2111 within the range of the beam angle A can be used as the distance to be controlled.

[0327] The luminous flux of the LED lamp beads 201 is L. When only one row of LED lamp beads 201 is arranged in the LED array 203, the projection areas m of the LED lamp beads 201 in the same LED array 201 may partially overlap on the inner surface of the first optical component 2111. Considering the overlap of the projection areas m of different LED lamp beads 201 on the inner surface of the first optical component 2111, the illuminance at any position within any projection area m does not exceed 5 L / m to prevent glare from forming when the projection areas m of the LED lamp beads 201 overlap. In one embodiment, the illuminance at any position within any projection area m does not exceed 4 L / m to prevent glare from forming when the projection areas m of the LED lamp beads 201 overlap. In one embodiment, the illuminance at any position within any projection area m does not exceed 3 L / m to prevent glare from forming when the projection areas m of the LED lamp beads 201 overlap. In one embodiment, the illuminance at any position within any projection area m does not exceed 2 L / m to prevent glare from forming when the projection areas m of the LED lamp beads 201 overlap.

[0328] One of the factors that affects the overlap of the projection areas m of the LED lamp beads 201 is the distance between the LED lamp beads 201. In one embodiment, the center distance between the LED lamp beads 201 is controlled to be greater than 4 mm or 4.5 mm.

[0329] In one embodiment, the number of LED lamp beads in the LED array 203 is n, and the number of projection areas m superimposed by any area of ​​any projection area m is less than or equal to n. In one embodiment, the number of LED lamp beads in the LED array 203 is n, and the number of projection areas m superimposed by any area of ​​any projection area m is less than n.

[0330] The total projection area on the inner surface of the first optical component 2111 is M. As an example, referring to FIG. 20 , when the LED array 203 includes two LED lamp beads 201 and the projection areas m of the two LED lamp beads 201 overlap, the total projection area M on the inner surface of the first optical component 2111 is formed by the boundary between the two LED lamp beads 201 and the projection area m on the inner surface of the first optical component 2111. That is, the total projection area M is the sum of the areas of the projection areas m of the two LED lamp beads 201 on the inner surface of the first optical component 2111 minus the area of ​​the overlapping area.

[0331] The luminous intensity near the optical axis of beam angle A is greater than the luminous intensity at the boundary of beam angle A. This means that the illumination intensity within a single projection area m is not uniform. Therefore, a configuration can be implemented such that 30%, 35%, or 40% or more of the total projection area M on the inner surface of the first optical component 2111 has at least two overlapping projection areas m, thereby improving illumination uniformity within the total projection area M. However, to avoid excessive overlapping projection areas m and the resulting uneven illumination intensity, no more than 25%, 20%, or 18% of the total projection area M on the inner surface of the first optical component 2111 can have four or more overlapping projection areas m.

[0332] Based on the above, this embodiment can achieve uniform light output while only providing one optical unit (without providing a lens), thereby simplifying the structure and reducing material costs.

[0333] As shown in Figures 21, 31, and 32, in one embodiment, a first cavity 21112 is formed within the first optical member 2111 (between the first optical member 2111 and the surface of the base 1), and a second cavity 21125 is formed between adjacent second optical members 2112. The first optical member 2111 is connected to the optical wall 21124 of the second optical member 2112 along its length, connecting the first cavity 21112 and the second cavity 21125. When the LED lamp bead 201 emits light, at least part of the light is reflected by the base 1 and the first optical member 2111, enters the second cavity 21125, and is then transmitted through the corresponding optical wall 21124 and / or the first connecting wall 2113, thereby enhancing the light output effect of the optical member 21.

[0334] As shown in Figures 33 to 38, in one embodiment, a first cavity 21112 is formed within the first optical member 2111 (between the first optical member 2111 and the surface of the base 1), and a second cavity 21125 is formed between adjacent second optical members 2112. The first optical member 2111 is not connected (not directly connected) to the optical wall 21124 of the second optical member 2112 in either the length or width direction. Therefore, the first cavity 21112 and the second cavity 21125 are not connected (excluding connections caused by assembly clearance. In this case, the assembly clearance is less than 5 mm, which is considered to be disconnected between the first cavity 21112 and the second cavity 21125). This reduces the amount of light generated by the light source assembly 20 during operation that is reflected within the first cavity 21112 and enters the second cavity 21125, thereby allowing the light emitted by the light source assembly 20 during operation to be more concentrated and emitted through the first optical member 2111. As shown in Figures 36 and 38 , in other words, the distance between the end of the first optical member 2112 (i.e., the lower portion of the first optical member 2112 in Figures 36 and 38 ) and the bottom surface 10 of the base 1 is no more than 5 mm, 4 mm, 3 mm, 2 mm, or 1 mm, thereby reducing the leakage of light emitted by the light source assembly 20 from the gap between the first optical member 2112 and the bottom surface 10. In one embodiment, the end of the first optical member 2112 (i.e., the lower portion of the first optical member 2112 in Figures 36 and 38 ) is at least partially in contact with the bottom surface 10 of the base 1 to further reduce light leakage.

[0335] In one embodiment, a positioning unit 1011 is provided on the bottom surface 10, and the light source assembly 20 is at least partially accommodated within the positioning unit 1011 in its height direction. In other words, the circuit board 202 of the light source assembly 20 is at least partially accommodated within the positioning unit 1011 in its thickness direction. When the surface of the circuit board 202 does not extend beyond the positioning unit 1011 (i.e., the circuit board 202 is completely accommodated within the positioning unit 1011 in its thickness direction), the tail portion 211112 of the first optical member 2112 (i.e., the lower portion of the first optical member 2112 in Figures 36 and 38 ) can be directly attached to the bottom surface 10. When a portion of the circuit board 202 in the thickness direction is accommodated in the positioning unit 1011, the tail 211112 of the first optical component 2112 (in terms of Figures 36 and 38, that is, the lower part of the first optical component 2112) is against the surface of the circuit board 202. At this time, the tail 211112 of the first optical component 2112 (in terms of Figures 36 and 38, that is, the lower part of the first optical component 2112) maintains a distance from the bottom surface 10, and the distance can be the height of the part of the circuit board 202 exposed outside the positioning unit 1011.

[0336] In one embodiment, the surface of the circuit board 202 exceeds or is flush with the positioning unit 1011 , that is, the surface of the circuit board 202 is higher than the bottom surface 10 .

[0337] In one embodiment, the optical wall 21124 has a reflective function, reflecting a portion of the light emitted from the first optical member 2111 to reduce the light emitted by the LED lighting device in a lateral direction of the first optical member 2111, thereby reducing glare. In this embodiment, in a cross-section of the first optical member 2111 along its width, the optical wall 21124 forms an acute angle A with the optical axis of the LED lamp bead 201. The acute angle A between the optical wall 21124 and the optical axis of the LED lamp bead 201 is 30 to 60 degrees. The optical wall 21124 includes a wall portion corresponding to the length direction of the first optical member 2111 and a wall portion corresponding to the width direction of the first optical member 2111. The angles between the optical axis of the LED lamp bead 201 and the wall portion of the optical wall 21124 corresponding to the length direction of the first optical member 2111 and the wall portion corresponding to the width direction of the first optical member 2111 are both within the aforementioned acute angle A. In one embodiment, the angle between the two corresponding sets of optical walls 21124 along the width of the first optical member 2111 is smaller than the beam angle of the LED lamp bead 201, thereby providing light blocking and reducing glare. Furthermore, the angle between the two corresponding sets of optical walls 21124 along the width of the first optical member 2111 (i.e., twice the aforementioned acute angle A) is greater than 70 degrees to prevent excessive restriction of the light output angle of the LED lighting device.

[0338] Figure 39 shows a partial cross-sectional view of an LED lighting device installed horizontally and emitting light downward, according to one embodiment. The cross-section depicts a cross section of the first optical member 2111 along the width of the first optical member 2111. In this embodiment, the optical wall 21124 of the second optical member 2112 has a lower endpoint in the cross section along the width of the first optical member 2111. The lower endpoint extends in a direction and forms a straight line L1 that is tangent to the outer surface of the first optical member 2111. The angle B between the straight line L1 and the horizontal plane (i.e., the light emitting surface of the LED lighting device, which is parallel or substantially parallel to the horizontal plane when the LED lighting device is installed horizontally) is greater than 10 degrees, 12 degrees, 14 degrees, 16 degrees, or 18 degrees. In one embodiment, the angle B between the straight line L1 and the horizontal plane (i.e., the light emitting surface of the LED lighting device, which is parallel or substantially parallel to the horizontal plane when the LED lighting device is installed horizontally) is within a range of 15 to 25 degrees. In one embodiment, the angle B between line L1 and the horizontal plane (i.e., the light-emitting surface of the LED lighting device, which is parallel or substantially parallel to the horizontal plane when the LED lighting device is mounted horizontally) is within a range of 18 to 20 degrees. When the human eye and the first optical member 2111 (or the LED lighting device) are in a certain position (when the angle C between the line connecting the human eye to the first optical member 2111 and the light-emitting surface of the LED lighting device is less than the aforementioned angle B), the human eye will not directly observe the direct light emitted from the first optical member 2111, thereby reducing glare. From another perspective, a line L is provided, one end of which is connected to the lower endpoint of the optical wall 21124 and the other end is tangent to the outer surface of the first optical member 2111. The angle B between line L and the horizontal plane (i.e., the light-emitting surface of the LED lighting device, which is parallel or substantially parallel to the horizontal plane when the LED lighting device is mounted horizontally) is greater than 10 degrees, 12 degrees, 14 degrees, 16 degrees, or 18 degrees. In some embodiments, the angle B between the line L1 and the horizontal plane is in the range of 15 to 25 degrees. In some embodiments, the angle B between the line L1 and the horizontal plane is in the range of 18 to 20 degrees. Within this range, the cross-sectional shape of the optical wall 21124 in this embodiment does not need to be straight. As long as the position of its lower endpoint meets the above requirements, it can still reduce glare.

[0339] Figure 40 shows a partial cross-sectional view of an LED lighting device installed horizontally and emitting light downward, according to one embodiment. The cross-section depicts a longitudinal section of the first optical member 2111. In this embodiment, in the longitudinal section of the first optical member 2111, the optical wall 21124 of the second optical member 2112 has a lower endpoint. The lower endpoint extends in a direction and forms a straight line L2 that is tangent to the outer surface of the first optical member 2112. Angle D is defined between line L2 and the horizontal plane (i.e., the light-emitting surface of the LED lighting device; when the LED lighting device is installed horizontally, the light-emitting surface is parallel or substantially parallel to the horizontal plane). Angle D is less than angle B. In some embodiments, angle D is greater than 10, 11, 12, or 13 degrees. In one embodiment, angle D is within a range of 10 to 20 degrees. In another embodiment, angle D is within a range of 12 to 16 degrees. When the human eye and the first optical component 2111 (or LED lighting device) are in a certain position (when the angle E between the line connecting the human eye to the first optical component 2111 and the light-emitting surface of the LED lighting device is less than the aforementioned angle D), the human eye will not directly observe the direct light emitted from the first optical component 2111, thereby reducing glare. From another perspective, a straight line L2 is set, one end of which is connected to the lower endpoint of the optical wall 21124 and the other end is tangent to the outer surface of the first optical component 2111. The angle D between the straight line L2 and the horizontal plane (i.e., the light-emitting surface of the LED lighting device, when the LED lighting device is installed horizontally, its light-emitting surface is parallel or approximately parallel to the horizontal plane) is in the range of 10 to 20 degrees. In some embodiments, the value of the angle D is in the range of 12 to 16 degrees. The cross-sectional shape of the optical wall 21124 in this embodiment does not need to be set to be straight. As long as the position of its lower endpoint meets the above requirements, it can play a role in reducing glare.

[0340] FIG41 is a schematic partial cross-sectional view of a horizontally mounted LED lighting device emitting light downwards according to an embodiment, showing a cross section along the width of the first optical member 2111. In this embodiment, in the cross section along the width of the first optical member 2111, the two sets of optical walls 21124 of the second optical member 2112 corresponding to the LED lamp bead 201 each have a lower endpoint. The angle F formed between the center of the light-emitting surface of the LED lamp bead 201 and the lines L3 and L4 connecting the lower endpoints of the two sets of optical walls 21124 is greater than 0.8 times the beam angle A of the LED lamp bead 201 (the angle formed by the two sides at the point where the light intensity of the LED lamp bead 201 reaches 50% of the normal light intensity) to prevent the optical walls 21124 from excessively blocking the light emitted by the LED lamp bead 201, thereby causing light loss and reducing light extraction efficiency. In some embodiments, the value of the angle F is less than 1.2 times the beam angle A of the LED lamp bead 201 (the angle formed on both sides when the light intensity of the LED lamp bead 201 reaches 50% of the normal light intensity is the beam angle A, and the value of the beam angle A at this point is approximately 120 degrees) to ensure that the optical wall 21124 has a certain light-blocking effect to reduce glare.

[0341] FIG42 is a schematic partial cross-sectional view of an LED lighting device in an embodiment that is installed horizontally and emits light downward, showing a cross section of the first optical component 2111 in the longitudinal direction. In this embodiment, on the cross-section in the longitudinal direction of the first optical component 2111, there is an LED array 203 corresponding to the first optical component 2111, and the two groups of optical walls 21124 of the second optical component 2112 correspond to the LED array 203 arranged in the first optical component 2111. The two groups of optical walls 21124 both have lower endpoints. The angle G between the midpoint of the light-emitting surface of any LED lamp bead 201 in the LED array 203 corresponding to the first optical component 2111 and the connecting lines L5 and L6 of the lower endpoints of the two groups of optical walls 21124 is greater than 0.8 times the beam angle A of the LED lamp bead 201 (the angle formed by the two sides when the light intensity of the LED lamp bead 201 reaches 50% of the normal light intensity is the beam angle A, and the value of the beam angle A at this point is about 120 degrees) to prevent the optical wall 21124 from excessively blocking the light output of the LED lamp bead 201, thereby causing light loss and reducing the light output efficiency. In some embodiments, the value of the angle G is less than 1.2 times the beam angle A of the LED lamp bead 201 (the angle formed on both sides when the light intensity of the LED lamp bead 201 reaches 50% of the normal light intensity is the beam angle A) to ensure that the optical wall 21124 has a certain light-blocking effect to reduce glare.

[0342] Figure 43 shows a partial cross-sectional view of an LED lighting device in an embodiment, mounted horizontally and emitting light downward. It shows a cross section of the first optical component 2111 in the width direction, and the cross section is taken at the main body 31111 of the first optical component 2111 in the length direction. A rectangular coordinate system is established, with the center of the circuit board 202 in the width direction as the origin, the thickness direction of the LED lighting device as the Y-axis, and the width direction of the first optical component 2111 as the X-axis. Any point on the first light-emitting surface 21111 of the first optical component 2111 satisfies the following formula:

[0343] y=Ax 2 +1E-15X-K

[0344] Wherein, A is a constant ranging from 0.048 to 0.052; E means exponent; K is a constant ranging from 9 to 12.

[0345] When any point on the first light-emitting surface 21111 of the first optical component 2111 satisfies the above formula, after the LED lamp bead 201 is installed on the circuit board 202 (installed in the middle position in the width direction of the circuit board 202), the beam angle of the LED lamp bead 201 can better correspond to the first light-emitting surface 21111 (in the width direction) of the first optical component 2111, so that the first light-emitting surface 21111 has a uniform light distribution.

[0346] In addition, in the above coordinate system, any point on the optical wall 21124 of the second optical member 2112 satisfies the following formula:

[0347] y=ax+L

[0348] Wherein, a is a constant, and its absolute value ranges from 1.35 to 1.45; L is a constant, and its range is from 18 to 22.

[0349] When any point on the optical wall 21124 of the second optical component 2112 satisfies the above formula, the optical wall 21124 can better redirect light incident on the optical wall 21124 to adjust light distribution and improve glare.

[0350] In one embodiment, a single thermal resistance layer (i.e., optical component 21) is provided along the optical axis (light emission direction) of LED lamp bead 201. When LED lamp bead 201 is operating, at least a portion of the heat generated is radiated to the thermal resistance layer and dissipated outward through the thermal resistance layer. This improves heat dissipation efficiency compared to LED lamp bead 201 requiring multiple thermal resistance layers (existing techniques typically employ at least two of a lampshade, lens, diffuser, or light guide plate to achieve uniform light emission, all of which constitute thermal resistance layers) to dissipate heat outward along the optical axis.

[0351] In one embodiment, there is only one layer of light-transmitting material (i.e., optical component 21) in the optical axis direction (light-emitting direction) of the LED lamp bead 201. When the LED lamp bead 201 is working, the light it generates is emitted to the light-transmitting material, and is emitted from the LED lighting device after passing through the light-transmitting material. Compared with the LED lamp bead 201 needing to emit light outward in the direction of the optical axis through multiple groups of light-transmitting materials (the prior art usually sets at least two groups of lampshades, lenses, diffusers or light guide plates to achieve a uniform light emission effect, but the above components will cause a certain amount of light loss), its light extraction efficiency is improved. In some embodiments, the light extraction efficiency of the LED lighting device is greater than 80%, 85% or 90%. The light extraction efficiency here refers to the ratio of the luminous flux emitted from the LED lighting device to the total luminous flux generated by the LED lamp bead 201.

[0352] In one embodiment, the light-transmitting component (first optical component 2111) and the anti-glare component (second optical component 2112) of the LED lighting device are made of the same layered material and are an integrated component.

[0353] In one embodiment, a light distribution curve for an LED lighting device is designed to control glare and improve light uniformity within the beam angle of the LED lighting device. (The light distribution curve represents the light output angle at each angle when the LED lighting device is mounted horizontally.) In this embodiment, when the LED lighting device is roughly square (e.g., two feet), or can be understood as the lamp structure described in any of the aforementioned embodiments, its light distribution curve is roughly axially symmetric (also known as rotational symmetry, meaning that the light distribution curves in all directions are basically symmetrical or identical). In other words, the ratio of the light intensity (in cd) at the same angle of two sets of light distribution curves in any direction is between 0.8 and 1.2. Furthermore, the ratio of the light intensity (in cd) at the same angle of two sets of light distribution curves in any direction is between 0.9 and 1.1. Even more, the ratio of the light intensity (in cd) at the same angle of two sets of light distribution curves in any direction is between 0.95 and 1.05. That is, if the ratio of the illuminance intensity at the same angle for two sets of light distribution curves in any direction falls within the above range, the light distribution curves of the LED lighting device in all directions can be considered to be substantially symmetrical or identical. For example, Figure 44 shows the light distribution curves for the C0 and C90 planes, where the light distribution curve for the C0 plane is A and the light distribution curve for the C90 plane is B. The ratio of the illuminance intensity at the same angle for light distribution curves A and B is between 0.8 and 1.2, 0.9 and 1.1, or 0.95 and 1.05. The C0 plane is a plane perpendicular to the light-emitting surface of the LED lighting device and passing through the centerline of the LED lighting device in one direction, where the one direction is parallel to the longitudinal extension of the circuit board. The C90 plane is a plane perpendicular to the C0 plane and passing through the centerline of the LED lighting device in another direction, where the other direction is perpendicular to the longitudinal extension of the circuit board. To further illustrate the C0 and C90 planes, see Figure 45 , which shows a schematic diagram of the back of an LED lighting device. In Figure 45 , the A0-A0 plane is the C0 plane, and the B90-B90 plane is the C90 plane. The horizontal direction in Figure 45 represents the orientation of the circuit board.

[0354] Since LED lighting devices are roughly square (for example, two feet), their light distribution curves are roughly axially symmetrical, and the light distribution curves in all directions are basically symmetrical or identical. Therefore, this embodiment uses the light distribution curve of the C0 plane as an example. As shown in Figure 44, this embodiment proposes a light distribution curve to address glare and light uniformity within the beam angle of LED lighting devices. A coordinate system is established with the zero point of the light distribution curve as the center. Within the range of 0 to 60 degrees, any point on the light distribution curve meets the following formula:

[0355] y=ax 2 +bx+K

[0356] Among them, a is a constant, and the range of a is -0.3 to -0.4; b is a constant, and the value of b is 3.5 to 4; K is a constant, and the range of K is 1600 to 1700.

[0357] In this embodiment, the light distribution curve for plane C0 has a beam angle between 100 and 110 degrees. The light distribution curves on either side of the C0 plane at an angle of 0 degrees are roughly symmetrical. Within the range of 0 to 60 degrees, when any point on the light distribution curve satisfies the above formula, the LED lighting device achieves relatively uniform light output within the beam angle and excellent glare control.

[0358] Continuing with FIG44 , a coordinate system is established with point 0 of the light distribution curve as the center. Within the range of -30 to 30 degrees, any point on the light distribution curve satisfies the following formula:

[0359] y=ax 2 +1E-13x+K

[0360] Among them, a is a constant, and the range of a is -0.25 to -0.27; E means exponent; K is a constant, and the value of K is between 1600 and 1720.

[0361] In the range of -30 to 30 degrees, when any point on the light distribution curve satisfies the above formula, the LED lighting device can have a higher light intensity in the range of -30 to 30 degrees to meet the light distribution requirements within this angle range.

[0362] In this embodiment, the above-mentioned design of the light distribution curve can be achieved through the aforementioned structural design.

[0363] As shown in Figures 69 to 75, an optical component 21 is provided in one embodiment, which can be applied to the LED lighting device of the present invention. The basic structure of the optical component 21 in this embodiment is roughly the same as that of the aforementioned embodiment (such as the optical component shown in the embodiments of Figures 1 to 56). Specifically, the optical component 21 also includes a first optical component 2111 and a second optical component 2112, wherein the first optical component 2111 is arranged in the light emitting direction of the corresponding LED array 203, that is, the first optical component 2111 and the LED array 203 are configured in a one-to-one correspondence, and the same number of the two are provided. As an example, in this embodiment, the external dimensions of the LED lighting device are 2 feet by 2 feet (603mm*603mm), and the number of optical components 21 is set to 16 groups.

[0364] In this embodiment, the luminous flux emitted from each group of optical components 21 ranges from 250 lumens to 350 lumens. In this embodiment, at least 50% of the luminous flux emitted from the optical component 21 is directly emitted from the first optical component 2111 (without reflection from the second optical component 2112) to reduce the light loss caused by reflection from the second optical component 2112, thereby ensuring light extraction efficiency. The light extraction efficiency of lamps in the prior art is usually not higher than 75% after passing through two layers of optical medium, while in the LED lighting device in this embodiment, at least 50% of the luminous flux passes through only one layer of optical medium (the first optical component 2111), and its overall light extraction efficiency can be higher than 80%. The light extraction efficiency here refers to the ratio of the luminous flux emitted by the LED lighting device to the sum of the luminous flux generated by all LED lamp beads 201.

[0365] In this embodiment, the structure of the first optical component 2111 may be substantially the same as the first optical component 2111 in the aforementioned embodiment.

[0366] In this embodiment, the second optical element 2112 comprises an optical wall disposed around the first optical element 2111. The optical wall 21124 comprises two sets of first light redirecting walls 211241 and two sets of second light redirecting walls 211242. The first light redirecting walls 211241 are disposed on either side of the width of the circuit board 202, while the second light redirecting walls 211242 are disposed along the length of the circuit board 202. Both the first light redirecting walls 211241 and the second light redirecting walls 211242 can be configured with reflective and / or light-transmitting functions.

[0367] In this embodiment, the beam angle of the LED lamp bead 201 is A (the definition of beam angle is the same as above). The LED array 203 includes multiple LED lamp beads 201, which are arranged in a row along the length of the circuit board 202. The angle a between the two sets of first light redirecting walls 211241 of the second optical component 2112 is greater than the beam angle A of the LED lamp bead 201. Therefore, even if the light from the LED lamp bead 201 undergoes light processing (e.g., light diffusion) by the first optical component 2111, the amount of light emitted by the LED lamp bead 201 that is reflected by the first light redirecting walls 211241 is reduced, thereby reducing light loss. In one embodiment, the difference between the angle a between the two sets of first light redirecting walls 211241 of the second optical component 2112 and the beam angle A of the LED lamp bead 201 does not exceed 30 degrees. This allows the first light redirecting walls 211241 to reflect sufficient light (light emitted from the LED lamp bead 201), resulting in a more uniform light distribution and better glare control for the LED lighting.

[0368] In this embodiment, the angle b between the two sets of second light redirecting walls 211242 of the second optical member 2112 is smaller than the beam angle A of the LED beads 201 and the angle a between the two sets of first light redirecting walls 211241. Therefore, the second light redirecting walls 211242 can reflect more light from the LED beads 201 in the LED array 203, reducing glare in the LED lighting device in the direction in which the LED beads 201 in the LED array 203 are arranged. Furthermore, the first light redirecting walls 211241 can reflect sufficient light (light emitted from the LED beads 201) to achieve a more uniform light distribution for the LED lighting. In some embodiments, the angle b between the two sets of second light redirecting walls 211242 of the second optical member 2112 is smaller than 90°, 85°, 80°, or 75°.

[0369] In this embodiment, the LED array 203 includes at least ten LED beads 201 (e.g., fourteen). Light emitted from at least two, four, or six LED beads 23 within the beam angle A will be directed toward the second light redirecting wall 211242. In other words, without considering the light diffusion effect of the first optical component 91, light emitted from at least two, four, or six LED beads 23 within the beam angle A will be directed toward the second light redirecting wall 211242, thereby reducing glare and providing better light distribution within the optical unit 91.

[0370] As shown in Figures 57 to 64, in some embodiments, the LED lighting device may have different optical components to obtain different light-emitting effects. That is, the basic structure of the LED lighting device in the embodiments of Figures 57 to 60 is the same as that of the previous embodiment (i.e., the structure of the base, power supply and light source, etc. is the same or substantially the same), except that different optical components are replaced. As shown in Figures 57 to 60, in this embodiment, the optical component 21 includes a second optical component 2112 and a first optical component 2111, wherein the second optical component 2112 is covered on the base 1 and is configured to redirect at least a portion of the light emitted by the light source assembly 20, and the first optical component 2111 is arranged on the second optical component 2112 and is configured to have one or more of the functions of light transmission, light diffusion, light refraction or light reflection.

[0371] The second optical member 2112 is provided with a plurality of optical walls 21124 corresponding to the LED array 203 of the light source assembly 20. Specifically, the optical walls 21124 include light exit holes 211243, which expose the corresponding LED array 203 to the optical walls 21124. In other words, the optical walls 21124 do not block the optical axis of the LED beads 201 in the LED array 203, preventing light loss caused by light passing through different media.

[0372] The optical wall 21124 is attached to the surface of the circuit board 202 of the light source assembly 20 so that no gap exists between the circuit board 202 and the outer wall of the light exit hole 211243 in the direction of the optical axis of the LED lamp bead 201, thereby preventing light from entering the gap and causing light loss. In some embodiments, the distance between the optical wall 21124 and the surface of the circuit board 202 of the light source assembly 20 is less than 1 mm (the distance between the surface of the circuit board 202 and the outer wall of the light exit hole 211243 in the direction of the optical axis of the LED lamp bead 201 is less than 1 mm). This can reduce the gap between the circuit board 202 and the outer wall of the light exit hole 211243 when light enters, thereby controlling light loss.

[0373] The optical wall 21124 includes a first light redirecting wall 211241 and a second light redirecting wall 211242. The first light redirecting wall 211241 is disposed on both sides of the width of the circuit board 202, while the second light redirecting wall 211242 is disposed on both sides of the length of the circuit board 202 and on both sides of the LED array 203. Both the first light redirecting wall 211241 and the second light redirecting wall 211242 can be configured with reflective and / or light-transmitting functions.

[0374] When the first optical member 2111 is overlaid on the second optical member 2112, an optical cavity is formed consisting of the first light redirecting wall 211241, the second light redirecting wall 211242, and the first optical member 2111. Light generated by the LED lamp bead 201 during operation is ultimately emitted from the first optical member 2111. In this embodiment, at least 50% of the luminous flux generated by the LED array 203 (light source assembly 20) during operation passes through only one optical layer (excluding air) before being emitted from the LED lighting device. This reduces light loss caused by passing through multiple optical layers and improves light extraction efficiency.

[0375] The first light redirecting wall 211241 includes a first reflective portion 2112411 and a first reflective portion 2112412. The first reflective portion 2112411 is configured to reflect direct light emitted by the LED lamp bead 201, while the first reflective portion 2112412 is configured to reflect only secondary light (light emitted by the LED lamp bead 201 and then projected onto the first reflective portion 2112412). The first reflective portion 2112411 is positioned closer to the lamp bead 21 than the first reflective portion 2112412. In some embodiments, the area of ​​the first reflective portion 2112411 accounts for at least one-fifth of the area of ​​the first light redirecting wall 211241 to prevent excessive concentration of light emitted by the LED lamp bead 2 after being reflected by the smaller first reflective portion 2112411, which could result in uneven light output. In this embodiment, the first optical component 2111 is removed (excluding the influence of the reflected light of the first optical component 2111), and after the LED lamp bead 201 is lit, the portion of the first light redirecting wall 211241 that is directly illuminated can be considered as the first reflective portion 2112411 referred to in this embodiment, otherwise it is the second reflective portion 61121.

[0376] As shown in Figures 61 and 62, a cross-section of the LED lighting device illustrates the mating relationship between the first light redirecting wall 211241 and the LED lamp bead 201. A line L, one end of which connects to the center of the front surface of the LED lamp bead 201 and the other end of which is tangent to the first light redirecting wall 211241, intersects the line L at point O, which divides the first light redirecting wall 211241 into a first portion and a second portion. The first portion is closer to the LED lamp bead 201 than the second portion. The first portion is the first reflective portion 2112411, and the second portion is the first reflective portion 2112412. In Figure 62, the ratio of the height H1 of the first portion to the height H2 of the second portion is between 1 and 1.3, ensuring that the LED lighting device exhibits improved light uniformity and a better light output angle. Specifically, when the ratio of the height H1 of the first part to the height H2 of the second part is within the above range, on the one hand, the first reflecting part 61122 can have a larger area to reflect the direct light output of the LED lamp bead 201 (or the first light redirecting wall 211241 has a larger area for reflecting the direct light output of the LED lamp bead 201), so that the reflected light can be emitted more evenly. On the other hand, the light output of the LED lighting equipment can be better controlled, its light output angle can be controlled, and glare can be reduced.

[0377] In this embodiment, the first light redirecting walls 211241 can be arc-shaped. The distance between the two sets of first light redirecting walls 211241 corresponding to the LED lamp bead 201 gradually increases in the direction away from the LED lamp bead 201 along the optical axis of the LED lamp bead 201, and the magnitude of the increase increases. In other words, the distance between the two sets of first light redirecting walls 211241 corresponding to the LED lamp bead 201 is flared or expanded.

[0378] As shown in 62, when the LED lighting device is installed horizontally and the optical axis of the LED lamp bead 201 is vertically downward, a rectangular coordinate system is established with the center of the light-emitting surface of the LED lamp bead 201 as the origin, the width direction of the circuit board 202 as the Y axis, and the thickness direction of the LED lighting device as the Y axis. Any point on the first light redirecting wall 211241 satisfies the following formula:

[0379] y=ax 2 +bx+k

[0380] The value of a ranges from 0.02 to 0.025, the absolute value of b ranges from 1.6 to 1.8, and k is a constant ranging from 5 to 6.

[0381] When the above formula is satisfied, the first light redirecting wall 211241 has better reflection effect on the light directly emitted by the LED lamp bead 201 and the light reflected from the first optical component 2111 , so that the LED lighting device has better light uniformity and light output angle.

[0382] As shown in Figures 63 and 64 , a cross-section of the LED lighting device illustrates the coordinated relationship between the second light redirecting wall 211242 and the LED array 203. At least a portion of the light emitted within the beam angle A of any LED bead 201 in the same LED array 203 is directly incident on the second light redirecting wall 211242 and reflected by the second light redirecting wall 211242. In other words, the boundary line of the beam angle A of any LED bead 201 in the same LED array 203 intersects the second light redirecting wall 211242. Therefore, on the one hand, at least a portion of the light emitted within the beam angle range of any LED bead 201 in the same LED array 203 is blocked by the second light redirecting wall 211242, thereby reducing glare. On the other hand, the reflection from the second light redirecting wall 211242 optimizes the overall light output, resulting in a more balanced light distribution.

[0383] In some embodiments, the first optical member 2111 can be configured to have a light diffusion function (for example, the first optical member 2111 has a light diffusion function due to its own material properties, such as using acrylic material) to improve the uniformity of light output. In some embodiments, a micro-array structure is provided on the first optical member 2111 to redirect light.

[0384] As shown in Figures 65 to 68, in some embodiments, to provide the LED lighting device with different light emission effects, the optical component 21 may further include a third optical component 2119. The third optical component 2119 extends along the length of the circuit board 202 and is located along the optical axis of the LED lamp bead 201. In some embodiments, the third optical component 2119 may be configured to have only a reflective function, reflecting light generated by the LED lamp bead 201 during operation toward the optical wall 21124 (the first light redirecting wall 211241 and the second light redirecting wall 211242). The light is then reflected by the optical wall 21124 back to the first optical component 2111 for emission. This reduces the light intensity near the optical axis of the LED lamp bead 201, thereby improving light emission uniformity. In some embodiments, the third optical component 2119 is configured to have both a reflective and a light-transmitting function to prevent the formation of dark areas at the third optical component 2119.

[0385] The third optical component 2119 has a first reflective surface 21191 and a second reflective surface 21192. The first reflective surface 21191 corresponds to the first light redirecting wall 211241 on one side, and the second reflective surface 21192 corresponds to the first light redirecting wall 211241 on the other side. The first reflective surface 21191 and the second reflective surface 21192 are symmetrically arranged.

[0386] The optical axis of the LED lamp bead 201 corresponds to or approximately corresponds to the junction of the first reflective surface 21191 and the second reflective surface 21192. The distance between the first reflective surface 21191 and the surface of the circuit board 202 gradually increases in the direction away from the junction of the first reflective surface 21191 and the second reflective surface 21192.

[0387] The third optical member 2119 is a strip-shaped structure and corresponds to multiple sets of optical walls 21124. The third optical member 2119 passes through the openings on the second light redirecting walls 211242 and is mounted on the second light redirecting walls 211242 to complete its fixation.

[0388] The LED lighting device in this embodiment may further include a mounting frame 5, which may also serve as a decorative element and is disposed on the outer edge of the base 1 and covers the outer edge of the optical member 21. The decorative element 7 may serve a decorative purpose and may also enhance the structural strength of the LED lighting device.

[0389] Please refer to Figure 90, which is a front stereoscopic schematic diagram of an LED lighting device in another embodiment of the present application. As shown in the figure, the LED lighting device 100 includes an optical component 21, which includes a first optical component 2111 and a second optical component 2112 connected to each other. A mounting frame 5 is provided on the outside of the optical component 21, and the mounting frame 5 surrounds the outer periphery of the optical component 21 and wraps the outer periphery of the optical component 21.

[0390] Please refer to Figure 91, which is a schematic diagram of the back of an LED lighting device in another embodiment of the present application. As described above, it also includes a base 1, an optical component 21 is arranged on the base 1, and an integrally formed reinforcement unit 1012 is also provided on the bottom surface 10 of the base 1. Unlike the LED lighting device described above, the hanging member 4 in this embodiment is a disc-shaped structure, with both ends fixed to the mounting frame 5, and the flat surface is fixed to the mounting environment (such as a ceiling, etc.), thereby fixing the LED lighting device 100 in the mounting environment. A groove space is formed between the mounting frame 5 and the base 1. The power supply 3 is arranged in the groove space and is in contact with at least one side of the mounting frame 5 (such as a side along the width direction of the LED lighting device). Together with the mounting frame 5, the power supply 3 completes the packaging of the power supply 3, and the height (or thickness) of the power supply 3 does not exceed the height of the mounting frame 5. The power supply 3 also includes an adjustment switch 34, which is electrically connected to the internal electronic components of the power supply 3. A through hole is provided on the side of the mounting frame 5 corresponding to the power supply 3, so that the adjustment switch 34 is exposed through the through hole, making it convenient for the user to control the working state of the LED lighting device 100, such as light intensity, color temperature, etc., through the adjustment switch 34.

[0391] Continuing with Figure 92, Figure 92 is a schematic exploded view of the back of an LED lighting device in another embodiment of the present application. As shown, the mounting frame 5 is composed of multiple support members 51, such as four support members 51, two long and two short, connected end to end to form the mounting frame 5. The support members 51 are provided with rotational snap-fit ​​grooves 51224, and both ends of the hanging member 4 can engage with the rotational snap-fit ​​grooves 51224 to achieve fixation. As shown in Figure 92, the hanging member 4, the base 1, and the optical component 21 are stacked in sequence, wherein the base 1 includes a bottom surface 10 and a sidewall 11 disposed around the bottom surface 10. The bottom surface 10 and the sidewall 11 form a groove 101 for accommodating the optical component 21. On one end of the side wall 11 away from the bottom surface 10, there is a mounting end wall 13 extending outward (roughly parallel to the bottom surface 10), and the outer periphery of the optical component 21 has a first connecting wall 2113 roughly parallel to the bottom surface 10. During the stacking process, the main part of the optical component 21 (that is, the first optical component 2111 and the second optical component 2112) is accommodated in the groove 101, and the first connecting wall 2113 of the optical component 21 and the mounting end wall 13 of the side wall 11 abut against each other, that is, the first connecting wall 2113 is supported on the mounting end wall 13, and the mounting frame 5 or the support member 51 covers the side of the first connecting wall 2113 away from the mounting end wall 13, that is, the base 1 and the mounting frame 5 clamp the optical component 21. In one embodiment of the present application, a third optical component 2119 is further included. The third optical component 2119 is arranged between the bottom surface 10 and the optical component 21, and diffuses the light emitted by the light source before transmitting it to the optical component 21. The third optical component 2119 can be an arc-shaped diffuser plate.

[0392] A hanger 4 is attached to the back of bottom surface 10, the surface away from optical member 21. The flat surface of hanger 4 is parallel to bottom surface 10 and spaced a certain distance apart. Both ends of hanger 4 are detachably connected to mounting frame 5, or support member 51.

[0393] Please refer to Figure 93, which is a schematic diagram of a hanging member in another embodiment of the present application. As shown in the figure, the hanging member 4 is generally in the form of a flat rectangular surface, with a first rotating fastening portion 41 and a second rotating fastening portion 42 bent at opposite ends of the rectangular surface. The first and second rotating fastening portions 41, 42 are integrally formed with the hanging member 4. The first and second rotating fastening portions 41, 42 can have the same or different structures and can bend toward the center of the hanging member 4 or toward the outside of the hanging member 4, as long as they can be fastened and secured with the rotating fastening groove 51224.

[0394] Please refer to Figures 94 and 95, wherein Figure 94 is an enlarged view of the W portion in Figure 91, and Figure 95 is an enlarged view of the X portion in Figure 92. In conjunction with Figures 91, 92, and 93, it can be seen that the two ends of the hanging member 4, namely the first rotating fastening portion 41 and the second rotating fastening portion 42, are respectively fastened to the two opposite sides of the mounting frame 5, or in other words, are fastened to the two opposite support members 51. As shown in Figure 95, a step structure 5122 is provided on the support member 51, and the step structure 5122 extends out of an outer extension wall 51221 and an inner extension wall 51222. In conjunction with Figure 92, it can be seen that the support member 51 is provided with an outer extension wall 51221 and an inner extension wall 51222 that are parallel to each other, wherein a plurality of rotating fastening grooves 51224 are provided on the inner extension wall 51222, and the rotating fastening grooves 51224 completely penetrate the inner extension wall 51222. The first rotating fastening groove 51224 is formed on the inner extension wall 51222. At least a portion of the portion 41 and the second rotating snap-fit ​​portion 42 passes through the rotating snap-fit ​​groove 51224. As shown in FIG94 , the second rotating snap-fit ​​portion 42 passes through the rotating snap-fit ​​groove 51224 and snaps into engagement with the rotating snap-fit ​​groove 51224 through a bending structure. Since the LED lighting fixture itself falls downward under the influence of gravity, and the second rotating snap-fit ​​portion 42 bends upward, the rotating snap-fit ​​groove 51224 is located in the recessed area formed by the bend. Under the combination of gravity and the upward bending design, the two are not easy to fall off.

[0395] Continuing to refer to Figure 95, a locking groove 51223 is further provided on one side of the step structure 5122. Combined with Figure 92, when the LED lighting fixture 100 is assembled, one side of the mounting end wall 13 of the side wall 11 abuts against the first connecting wall 2113 of the optical component 21, and the other side abuts against the locking groove 51223 and is locked by a screw structure. Of course, it can also be fixed by gluing, welding, snapping or other structures.

[0396] FIG96 is a front exploded schematic diagram of an LED lighting device in another embodiment of the present application. Referring to FIG95 and FIG96 , the support member 51 further includes a first wall 511, which is pressed against a surface of the first connecting wall 2113 of the optical component 21 away from the mounting end wall 13, thereby pressing and fixing the optical component 21 to the base 1. Referring to FIG97 , which is a schematic diagram of the main frame of the LED lighting device in another embodiment of the present application, excluding the base 11 and the optical component 21, it can be seen that the hanging member 4 is provided in the middle of the LED lighting device to ensure relatively uniform force after the LED lighting device is fixed to the use environment. The power box 33 is combined with a portion of the mounting frame 5 to form a packaging structure, which, together with the base 1, encapsulates the power supply 3.

[0397] Please refer to Figure 98, which is a schematic diagram of another embodiment of the present application in which the hanging member in the LED lighting device is rotated a certain angle relative to the main body of the LED lighting device. When the LED lighting device is installed in the use environment, one end of the hanging member 4 needs to be fastened to the LED lighting device first, and then the other end is fastened.

[0398] Please refer to Figure 99, which is an enlarged view of point Y in Figure 98 of this application. Taking the second rotating snap-fit ​​portion 42 as an example, it is first snapped into the rotating snap-fit ​​groove 51224 of the inner extension wall 51222. At this time, relative rotation can also occur between the hanging support member 4 and the main body of the LED lighting device, that is, the hanging support member 4 and the main body of the LED lighting device (or the mounting frame 5) are partially fixed.

[0399] Please refer to 100 to 103 , which are schematic diagrams of fixing an LED lighting device and a usage environment in another embodiment of the present application.

[0400] As shown in FIG100 , when securing the LED lighting device to its environment, the relatively flat surface of the hanging member 4 is first secured to the environment (e.g., a ceiling) using screws or other means. Then, one end of the LED lighting device, specifically the inner extension wall 51222, is engaged with one end of the hanging member 4 via a rotational engagement slot 51224, such as the first rotational engagement portion 41 of the hanging member 4. This partially secures the LED lighting device and the hanging member 4, as shown in FIG99 . Referring to FIG101 , the inner extension wall 51222, distal from the first rotational engagement portion 41, is secured to the hanging member 4 or the ceiling via a safety rope 513. This creates a temporary triangular fixed structure among the hanging member 4, the LED lighting device, and the safety rope 513, preventing the LED lighting device from accidentally detaching from the first rotational engagement portion 41, potentially causing property damage or personal injury. After the safety rope 513 is in place, a wire 514 is connected between the LED lighting device and the outside world, allowing external power to be obtained via the wire 514. After setting the wire 514, rotate the main body of the LED lighting device in the direction of the arrow. That is, while keeping the first rotating buckle 41 engaged with the inner extension wall 51222 on one side, push the end of the LED lighting fixture away from the ceiling toward the second rotating buckle 42, and finally make the LED lighting fixture fit the ceiling. At this time, remove the safety rope 513, and the second rotating buckle 42 has not yet engaged with the inner extension wall 51222. Continuing with FIG102, the LED lighting device is pushed in the direction indicated by the arrow, i.e., in the direction in which the hanging member 4 and the inner extension wall 51222 are not engaged, so that the inner extension wall 51222 compresses the second rotating fastening portion 42, causing it to bend downward and pass through the rotating fastening slot 51224. After the second fastening portion 42 passes through the rotating fastening slot 51224, the force is stopped, and the second rotating fastening portion 42 recovers its deformation due to its own material strength, i.e., it bounces toward the ceiling or upward, locking the rotating fastening portion 42 through the bent portion, thereby securing the LED lighting device to the external environment, forming the structure shown in FIG103. This fixing method can significantly improve the installation efficiency of the LED lighting device and enhance the adaptability of the LED lighting device to the installation environment.

[0401] In other embodiments of the present application, the safety rope 513 may be removed after the second rotating fastening portion 42 is fastened to the inner extension wall 51222 .

[0402] Please refer to Figure 104, which is a perspective schematic diagram of an LED lighting device according to another embodiment of the present application. As shown in Figure 104, the difference between the LED lighting device shown in Figure 91 lies in the mounting frame 5, which includes a support member 51. In Figure 91, the support member 51 includes an integrally formed outer extension wall 51221 and an inner extension wall 51222. In the LED lighting device of Figure 104, the outer extension wall 51221 and the inner extension wall 51222 of the support member 51 are formed separately. That is, the inner extension wall 51222 is formed separately and then fixed to the support member 51. See Figure 105 for details.

[0403] Please refer to Figure 105, which is an exploded schematic diagram of an LED lighting device in another embodiment of the present application. Compared with the LED lighting device described in Figures 90 to 103, the difference between the two lies in the structure of the mounting frame 5. In Figures 90 to 103, the support member 51 of the mounting frame 5 has an integrally formed outer extension wall 51221 and inner extension wall 51222, for example, formed by integral sheet metal stamping. In contrast, in the LED lighting device shown in Figures 104 and 105, the outer extension wall 51221 and inner extension wall 51222 are formed separately, that is, the outer extension wall 51221 is integrally formed on the support member 51, while the inner extension wall 51222 is separately formed and then fixed to the support member 51. This design allows the LED lighting devices to be stacked during packaging, improving packaging efficiency and profitability while also reducing production difficulty. The outer extension wall 51221 and the inner extension wall 51222 can be made of the same material or different materials, as long as they meet the requirements of the LED lighting fixture. As shown, the inner extension wall 51222 is also provided with a plurality of rotational engagement slots 51224. In one embodiment, each inner extension wall 51222 is provided with two rotational engagement slots 51224. During the assembly and installation of the LED lighting device in its intended use, the inner extension wall 51222 must first be secured to the support member 51 by screws, welding, or snap fasteners. The other LED lighting devices shown in Figures 90 to 103 are not described in detail here.

[0404] In other embodiments, the present invention discloses an LED lighting fixture 100, which can be suspended or fixed to a ceiling or suspended ceiling. Depending on the application, the LED lighting fixture 100 disclosed in this application may also be referred to as a panel light, flat panel light, grille light, pendant light, recessed light, cove light, recessed light, or ceiling light.

[0405] Please refer to Figures 106 and 108. Figure 106 is a front schematic diagram of an LED lighting fixture 100 according to an embodiment of the present invention, and Figure 108 is an exploded view of the front view of the LED lighting fixture 100 according to an embodiment of the present invention. As shown in Figure 108, the LED lighting fixture 100 includes a base 1, which serves as the main structure and mounting base of the fixture. The base 1 includes a recessed structure, i.e., a storage space. Other components of the LED lighting fixture 100, such as the optical assembly 2, can be accommodated within the recessed structure on the bottom surface 10. The optical assembly 2 emits light during operation, illuminating the LED lighting fixture to provide illumination. A mounting frame 5 is provided along the light-emitting direction of the LED lighting fixture. The mounting frame 5 includes several support members 51. The support members 51 are mounted on the LED lighting fixture and clamped to the base 1 to secure the optical assembly 2. Specifically, the optical assembly 2 is positioned between the base 1 and the support members 51.

[0406] Continuing with FIG106, as shown in FIG106, the LED lighting fixture 100 is generally rectangular, and a mounting frame 5 is provided at the outermost side of the light emitting direction, which is connected end to end. The mounting frame 5 includes multiple support members 51, which are used to fix the optical components inside the fixture. The support members 51 have a flat surface, and the area enclosed by the maximum side length of the support members 51 is larger than the area enclosed by the maximum side length of the bottom surface 10. In other words, the maximum side length of the support members 51 is greater than the maximum side length of the bottom surface 10. This can block some irregular structures of the LED lighting fixture 100, so that from the user's perspective, the LED lighting fixture 100 has a regular and aesthetically pleasing light emitting surface. For the convenience of subsequent description, the optical components can be referred to as optical components 2, and the annular frame can be referred to as support members 51.

[0407] Please refer to Figures 107, 108, and 109, which are schematic diagrams of the back of an LED lighting fixture 100 according to an embodiment of the present invention. Figure 119 is a schematic diagram of the structure of a base 1 according to an embodiment of the present invention. As shown in the figure, the LED lighting fixture 100 includes a base 1, which includes a bottom surface 10 and side walls 11 arranged end to end around the bottom surface 10. A power supply 3 is disposed on the side wall 11, and at least one side of the power supply 3 is aligned with the side wall 11. The bottom surface 10 may also be provided with at least one wire hole 103 to facilitate at least some of the wires of the LED lighting fixture 100 to pass through the wire hole 103 and be connected to the outside world.

[0408] Please refer to Figure 108, which is an exploded view of the forward direction of the LED lighting fixture 100 in one embodiment of the present invention, and Figure 109, which is a schematic diagram of the structure of the base 1 in one embodiment of the present invention. As shown in the figure, a rectangular coordinate system is established with the light emitting direction of the LED lighting fixture 100 as the Z axis. The LED lighting fixture 100 includes a base 1 disposed at the bottom (i.e., at the lowest position of the LED lighting fixture 100 on the Z axis). The base 1 includes a bottom surface 10 that is generally parallel to a horizontal plane or an XY plane. A side wall 11 is disposed at the edge of the bottom surface 10, surrounding the bottom surface 10 and connected end to end to form an annular structure. The side wall 11 extends generally along the Z axis, i.e., along the positive direction of the Z axis. The side wall 11 and the bottom surface 10 form a groove with an opening, i.e., an accommodating space 12. For ease of description below, the light emitting direction of the LED lighting fixture 100 is referred to as the upward direction, i.e., the positive direction of the Z axis is referred to as the upward direction. An optical assembly 2 is disposed above the base 1. The optical assembly 2 is disposed within a housing space 12 formed by the bottom surface 10 and the sidewalls 11, meaning that at least a portion of the optical assembly 2 is disposed within the housing space 12. The optical assembly 2 comprises, in order, a light source assembly 20, an optical carrier 22, and an optical member 21, along the light emission direction of the LED lighting fixture 100 (i.e., the positive Z-axis direction). The light source assembly 20 can be disposed directly or indirectly on the bottom surface 10, such as by gluing, welding, snap-fitting, or screwing. The light source assembly 20 includes at least one circuit board 202 and at least one LED array 203 disposed on the circuit board 202. The LED array 203 can be an array of LED chips or an array of other light-emitting devices. In another embodiment of the present application, the light source assembly 20 includes at least one light-emitting device disposed on the circuit board 202. The circuit board 202 in the present invention can be, but is not limited to, a material that can provide circuit conductivity and function as a circuit board, such as an FPC, PCB, or aluminum substrate. In one embodiment of the present invention, the circuit board 202 can be arranged along the X direction, the Y direction, the length direction or the width direction of the LED lighting fixture 100, or at a certain angle (intersecting) with the X axis, or at a certain angle intersecting with the Y axis.

[0409] In one embodiment of the present invention, the light source assembly 20 includes a plurality of parallel circuit boards 202. An optical support portion 22 is stacked and mounted above the light source assembly 20. The optical support portion 22 includes a second prism structure 221' that contacts the bottom surface 10. The second prism structure 221' is integrally formed with the optical support portion 22, such that at least a portion of the optical support portion 22 is spaced apart from the bottom surface 10. An optical component 21 is disposed above the optical support portion 22. The optical component 21 includes an array of optical units 211. In one embodiment of the present invention, the optical units 211 may be inverted prism structures or reflective cup structures. The optical support portion 22 also includes a window structure 222 corresponding to the LED array 203. When the optical support portion 22 is disposed on the bottom surface 10 and covers the light source assembly 20, light emitted from the LED array 203 in the light source assembly 20 can pass through the window structure 222 and be emitted outward, reaching the optical component 21 and ultimately exiting the LED lighting fixture 100. There is a gap between at least part of the optical bearing portion 22 and the bottom surface 10. When the optical component 21 is arranged on the optical bearing portion 22, it can maintain a certain distance from the light source assembly 20 through this gap. On the one hand, it prevents the optical component 21 from being too close to the light source assembly 20 and making the light output grainy. On the other hand, maintaining a certain distance can reduce glare to a certain extent.

[0410] The light source assembly 20 , the optical bearing portion 22 , and the optical component 21 are stacked in sequence along the light emitting direction of the LED lighting fixture 100 and accommodated in the accommodating space 12 formed by the base 1 and the side wall 11 .

[0411] In one embodiment of the present invention, the height of the light source assembly 20, the optical carrier 22, and the optical component 21 stacked in sequence along the light-emitting direction of the LED lighting fixture 100 does not exceed or is less than or equal to the height of the accommodating space 12, that is, does not exceed or is less than or equal to the height of the side wall 11 along the positive direction of the Z axis, thereby controlling the height of the LED lighting fixture 100 and facilitating subsequent assembly.

[0412] A support member 51 is provided above the optical member 21, along the light-emitting direction or the positive Z-axis direction. The side of the support member 51 facing the bottom surface 10 covers the outer edge of the optical member 21 and is coupled to the side wall 11. That is, the side wall 11 and the support member 51 clamp and secure the optical member 21. The light source assembly 20, the optical carrier 22, and the optical member 21 are stacked in sequence. Therefore, the support member 51 can also secure the light source assembly 20 and the optical carrier 22 to a certain extent, thereby completing the assembly of the LED lighting fixture 100. The support member 51 and the side wall 11 can be secured by one or more of the following methods: gluing, welding, snap-fitting, nesting, screw locking, magnetic attraction, and the like.

[0413] The present invention also includes a power supply 3, which is arranged on a side of the side wall 11 relatively away from the accommodating space 12. That is, the power supply 3 is arranged outside the accommodating space 12, does not occupy the accommodating space 12 and squeezes the layout space of other components, and does not increase the height of the LED lighting fixture 100 (along the Z-axis direction); and the inclined setting of the side wall 11 will inevitably produce this vacant area, and the arrangement of the power supply 3 in this space can reduce the space occupied by other areas.

[0414] Please refer to Figures 110 and 111A. Figure 110 is a schematic cross-sectional view of an LED lighting fixture 100 according to an embodiment of the present invention, and Figure 111A is a schematic view of a light source assembly 20 according to an embodiment of the present invention. As shown in Figure 111A, the light source assembly 20 includes a circuit board 202 and an LED array 203 disposed on the circuit board 202. The LED array 203 includes a plurality of regularly arranged LED chips. The side of the circuit board 202 not provided with the LED array 203 is positioned in contact with the bottom surface 10, for example, by gluing. The optical carrier 22 has spaced-apart concave and convex portions, or in other words, a truncated pyramid structure without a bottom surface. These truncated pyramid structures are arranged in an interlaced manner, such as the first truncated pyramid structure 221 shown in Figure 110. The truncated pyramid surface (the smaller pyramid surface) of the first truncated pyramid structure 221 faces downward, i.e., toward the bottom surface 10. The truncated pyramid surface of the first truncated pyramid structure 221 has a window, i.e., a through-hole extending through the truncated pyramid surface. The window area is smaller than the pyramid surface, allowing a portion of the pyramid surface to be pressed against the circuit board 202, and the LED array 203 is exposed through the window. In other words, the window area is larger than the LED array 203. The pyramid surface adjacent to the first pyramid structure 221 faces the light-emitting direction, i.e., the pyramid surface of the second pyramid structure 221' faces upward, i.e., points in the positive direction of the Z axis. This upward-facing pyramid surface is used to support the optical component 21. The optical component 21 is formed by a plurality of optical units 211 arranged in an array. The optical units 211 include a first optical component 2111 and a plurality of second optical components 2112 disposed around the first optical component. The first optical components 2111 and the second optical components 2112 form a groove structure. The first optical component 2111 at least partially presses against the upward-facing pyramid surface of the optical support portion 22, i.e., the pyramid surface away from the bottom surface 10, such as the pyramid surface of the first pyramid structure 221.

[0415] In this embodiment, each first optical member 2111 corresponds to an LED array 203. The projection of the first optical member 2111 onto the bottom surface 10 along the Z-axis can completely cover the LED array 203. The LED array 203 is surrounded by the second prism structure 221'. In some embodiments, the side surfaces of the prism structure have light processing functions, such as light reflection, which can reflect at least a portion of the light emitted from the LED array 203 and reflect this portion of light to the first optical member 2111, and then emit it from the first optical member 2111. The vast majority of the light from the LED array 203 is directly illuminated by the first optical member 2111.

[0416] In this embodiment, at least a portion of the light emitted from the first optical component 2111 is directly emitted, that is, directly projected outside the LED lighting fixture 100 .

[0417] In this embodiment, at least a portion of the light emitted from the first optical component 2111 is projected onto the second optical component 2112 , and is reflected by the second optical component 2112 before being projected outside the LED lighting fixture 100 .

[0418] In one embodiment of the present invention, the optical component 21, the optical unit 211, the first optical component 2111, and the second optical component 2112 have at least one of light projection, light reflection, light diffusion, light refraction, and light diffraction, or a combination of multiple thereof.

[0419] The second pyramid structure 221', adjacent to the first pyramid structure 221, has its pyramidal surface facing downward and rests on the bottom surface 10. This means that the pyramidal surfaces of the optical carrier 22 are spaced apart, facing upward and downward, and at least one-third of the pyramidal surface is provided with a window. The first optical member 2111 of the optical unit 211 is disposed on the pyramidal surface, maintaining a certain distance, or gap, between the optical unit 211 (optical member 21) and the bottom surface 10, thereby maintaining a certain distance or gap from the LED array 203. This gap prevents a grainy effect when the light is emitted and effectively reduces glare.

[0420] Of course, in some other embodiments, the LED arrays 203 may be disposed on both sides of the circuit board 202 .

[0421] Continuing to refer to Figure 110, as shown in the enlarged part of Figure 110, the support member 51 includes a first wall 511, which is a flat surface and is arranged roughly parallel to the bottom surface 10. The first wall 511 is provided with a first extension portion 5113, a second extension portion 5114 and a third extension portion 5115 pointing to the bottom surface 10 on the side facing the bottom surface 10, wherein the length of the third extension portion 5115 is greater than that of the second extension portion 5114, and the length of the second extension portion 5114 is greater than that of the first extension portion 5113, and the first extension portion 5113, the second extension portion 5114 and the third extension portion 5115 are arranged in sequence toward the edge of the LED lighting fixture 100, that is, away from the optical component 21.

[0422] A downwardly bent mounting wall 2122 is provided along the outer periphery of the optical component 21, and at least a portion of the support member 51 is supported by the mounting wall 2122. The first extension portion 5113 is provided on the mounting wall 2122, that is, the first extension portion 5113 is pressed against the mounting wall 2122, and the end of the mounting wall 2122 abuts the second extension portion 5114. That is, the first extension portion 5113, the second extension portion 5114, the mounting wall 2122 and the first wall 511 between the first extension portion 5113 and the second extension portion 5114 form a closed cavity, and an adhesive material can be provided in the closed cavity for connecting the support member 51 and the optical component 21.

[0423] A first mounting portion 138 and a second mounting portion 139 are provided at one end of the side wall 11 away from the bottom surface 10, wherein the first mounting portion 138 is approximately parallel to the bottom surface 10, and the second mounting portion 139 is approximately perpendicular to the bottom surface 10 and parallel to the third extension portion 5115. The first mounting portion 138 and the second mounting portion 139 are integrally formed on the side wall 11, or are bent from the end of the side wall 11 away from the bottom surface 10.

[0424] The power supply 3 is arranged on the side of the first mounting portion 138 facing the bottom surface 10 , and the power supply 3 also includes an inclined surface that fits with the side wall 11 . The first mounting portion 138 and the power supply 3 can be connected by gluing, welding, snapping, locking, screw locking, etc.

[0425] The second mounting portion 139 is arranged on the inner side of the third extension portion 5115, that is, the side of the third extension portion 5115 close to the optical component 21, and is in contact with the third extension portion 5115. The two can be connected and fixed by gluing, welding, snapping, locking, screw locking, etc. The above connection enables the optical component 21 to be fixed by the support member 51 and the base 1, thereby realizing the packaging of the lamp.

[0426] Referring to FIG. 112 , which is a schematic diagram of an embodiment of the present invention with the optical component 21 removed, it can be seen that the LED lighting fixture 100 further includes a power cord box 6 , which is disposed on a side wall 11 perpendicular to the bottom surface 10 . The optical support portion 22 is provided with a relief portion 223 near the side wall 11 perpendicular to the bottom surface 10 . The relief portion 223 prevents interference between the power cord box 6 and the optical support portion 22 . The power cord box 6 is used to house some of the electronic components required for the fixture, such as the transformer and light source control module, as well as some wires, improving the cleanliness of the interior of the fixture.

[0427] In another embodiment of the present invention, the power cord box 6 may also directly accommodate the power supply 3 , thereby eliminating the need to arrange the power supply 3 outside the side wall 11 .

[0428] Referring to FIG. 111A , circuit board 202 has oppositely arranged recesses and protrusions. Circuit board 202 is cut from a sheet of material. When two circuit boards 202 are in a corresponding relationship on the sheet to be cut, their recesses and protrusions correspond to each other, meaning the protrusion of one circuit board 202 fits within the recess of the other light source board. Furthermore, these recesses and protrusions are staggered when two corresponding circuit boards 202 are not cut. This allows more individual circuit boards 202 to be cut from a single sheet of the same area. LED arrays 203 (or LED lamp beads 201) are disposed on the protrusions.

[0429] Please refer to FIG. 111B , which shows another embodiment of the circuit board 202 of the present invention.

[0430] Refer to Figure 113, which is a schematic diagram of some components in an LED lighting fixture 100 in another embodiment of the present invention. The basic structure of this embodiment is the same as that of the previous embodiment, except that in this embodiment, the independent optical bearing part 22 is eliminated, and part or all of the functions of the optical bearing part 22 are realized by an integrally formed groove or step on the base 1.

[0431] Referring to FIG. 114 , a front view of the base 1 structure according to another embodiment of the present invention is shown. The bottom surface 10 of the base 1 is provided with a groove extending along its length or width. For ease of description, this groove is referred to as bottom groove 101. This groove 101 can have different functions in different embodiments, such as serving as a light source groove, a power source groove, or a reinforcement structure. In one embodiment of the present application, this groove serves as a light source groove 1017, integrally formed on the bottom surface 10 by methods such as die-casting, drawing, or stamping. In this embodiment, there is at least one, and more specifically, at least two, light source grooves 1017. The light source assembly 20 is disposed within each of these grooves and adheres to the bottom surface of each groove. The bottom surface 10 also includes a power source groove 1018, which is used to accommodate the aforementioned power cord box 6. In this embodiment, the power cord box 6 houses the power supply 3, eliminating the need for an external power supply 3.

[0432] 115 , which is a schematic diagram of the back side of the base 1 in another embodiment of the present invention. Combining FIG114 and FIG115 , it can be seen that the depth of the power supply groove 1018 is less than the depth of the light source groove 1017 .

[0433] Refer to Figure 116, which is a schematic diagram of the assembly of the power cord box 6 and the base 1. The power cord box 6 is at least partially accommodated in the power groove 1018.

[0434] Referring to FIG117 , which is a schematic cross-sectional view along the length of an LED lighting fixture 100 according to another embodiment of the present invention, and in conjunction with FIG115 , FIG116 , and FIG117 , it can be seen that the optical member 21 is mounted on the bottom surface 10, and the optical unit 211 corresponds to the light source groove 1017 and, further, corresponds to the LED array 203 on the light source assembly 20 in the light source groove 1017. The provision of the light source groove 1017 maintains a sufficient distance between the optical member 21 and the light source assembly 20 (LED array 203) to achieve a satisfactory light output effect.

[0435] In this embodiment, the optical component 21 is an integrally formed structure, for example, formed by integrally hot pressing, stamping, or vacuum forming of a plastic material.

[0436] In one embodiment of the present invention, the light source groove 1017 may also be arranged parallel to the width direction of the LED lighting fixture 100 .

[0437] Refer to Figures 118 to 121, which are schematic diagrams of an LED lighting fixture 100 in an embodiment of the present invention. This embodiment has the same basic structure as the aforementioned embodiment, except that in this embodiment, the independent optical bearing portion 22 of the aforementioned embodiment is eliminated, and a support portion 21126 is provided with an optical component 21 (refer to Figure 121, Figure 121 is a partial enlarged view of point Z in Figure 120) to realize part or all of the functions of the optical bearing portion 22 of the aforementioned embodiment; in addition, a directional diffusion film 213 and a prism plate 214 are added to improve the light output effect of the LED lighting fixture 100, meet the lighting requirements of specific occasions, and enhance the visual effect.

[0438] Refer to Figure 119, which is a forward exploded diagram of the LED lighting fixture 100 in one embodiment of the present invention, or an exploded diagram along the light-emitting direction. As shown in the figure, a rectangular coordinate system is established with the light-emitting direction of the LED lighting fixture 100 as the Z-axis, and the exploded diagram of the LED lighting fixture 100 is exploded along the positive direction of the Z-axis. The LED lighting fixture 100 includes: a base 1 and an optical component 2 arranged at the bottom (i.e., the LED lighting fixture 100 is at the lowest position on the Z-axis), the optical component 2 is arranged on the base 1, and the LED lighting fixture 100 may also include a mounting frame 5, the mounting frame 5 includes a plurality of support members 51, the support members 51 (or the mounting frame 5) are connected to the base 1, and fix the optical component 2 to the base 1, that is, the support members 51 and the base 1 clamp the optical component 2.

[0439] Specifically, the base 1 includes a bottom surface 10, which is generally parallel to a horizontal plane or XY plane, and sidewalls 11. The sidewalls 11 extend generally along the Z-axis, i.e., in the positive direction of the Z-axis. The sidewalls 11 and the bottom surface 10 form a recessed groove with an opening, thereby forming a receiving space 12. The optical assembly 2 is accommodated within the receiving space 12. For ease of description, the direction of light emission from the LED lighting fixture 100, i.e., along the positive direction of the Z-axis, is referred to as the upward direction. The bottom surface 10 is generally rectangular, such as square or rectangular, but can also be configured in other shapes as needed. In this embodiment, the bottom surface 10 is rectangular. The material of the bottom surface 10 is preferably metal to ensure its structural strength and prevent deformation during use. More preferably, the material of the bottom surface 10 is metal, which has good thermal conductivity. This facilitates heat dissipation from the LED lighting fixture 100. Furthermore, the metal material has high structural strength, ensuring the stability of the LED lighting fixture 100 and extending its service life.

[0440] In one embodiment of the present invention, the bottom surface 10 can be made of a light-transmitting material, such as a transparent, translucent, or opaque material. When it is desired that some light be emitted from the back of the LED lighting fixture 100, the bottom surface 10 can be made of a transparent or translucent material. This allows some light to be emitted from the back of the LED lighting fixture 100, eliminating dark shadows on the back of the LED lighting fixture 100 and improving the overall lighting effect of the LED lighting fixture 100. The bottom surface 10 can be fully light-transmitting, partially light-transmitting, or at least partially light-transmitting. Of course, it can also be completely opaque.

[0441] The sidewall 11 can be disposed at or near the outer edge of the bottom surface 10. The sidewall 11 surrounds the bottom surface 10, forming a ring-shaped structure connected end to end, and forms a receiving space 12 with the bottom surface 10. The sidewall 11 not only enhances the overall structural strength of the base 1, but also prevents foreign matter such as dust and insects from entering the LED lighting fixture 100 through the sidewall 11. In some embodiments, the base 1 may include multiple sidewalls 11 spaced apart.

[0442] Sidewall 11 extends along the light-emitting direction of LED lighting fixture 100, forming a certain height. Together with bottom surface 10, it forms an accommodation space 12. The height of sidewall 11 determines the depth of accommodation space 12. Optical assembly 2 is disposed within accommodation space 12, and the height of sidewall 11 can be adjusted based on actual needs. In this embodiment, the thickness of optical assembly 2 in the light-emitting direction of LED lighting fixture 100 is less than or equal to the depth of accommodation space 12, that is, less than or equal to the height of sidewall 11 in the light-emitting direction of LED lighting fixture 100. This controls the height of LED lighting fixture 100 and facilitates subsequent assembly.

[0443] The sidewall 11 can be made of either a light-transmitting material or an opaque material, such as a transparent material, a translucent material, or an opaque material, or at least two of these materials. This can be configured as needed to meet the lighting requirements of different occasions, such as making the sidewall 11 completely transparent, completely opaque, partially transparent, or partially opaque (or at least partially transparent, or at least partially opaque, and the bottom surface 10 can also be the same). The sidewall 11 is preferably made of metal, and more preferably metal has good thermal conductivity, while ensuring the strength and heat dissipation of the sidewall 11.

[0444] The side wall 11 and the bottom surface 10 can be a split structure or an integrally formed structure. When the side wall 11 and the bottom surface 10 are a split structure, the side wall 11 and the bottom surface 10 can be connected by gluing, welding, snapping or screw locking. When the side wall 11 and the bottom surface 10 are an integrally formed structure, the material of the side wall 11 and the bottom surface 10 is preferably the same material, which is beneficial to the production and manufacturing of the base 1. The side wall 11 and the bottom surface 10 adopt an integrally formed structure, which can improve the bonding force between the side wall 11 and the bottom surface 10, and can also improve the dimensional accuracy of the base 1. It is also beneficial to batch manufacturing and reduces production costs. For example, the bottom surface 10 and the side wall 11 are formed by integrally stamping the same material, such as metal material, or by bending on a metal surface to form the side wall 11 and the bottom surface 10.

[0445] The bottom surface 10 may be provided with a bottom surface groove 101, which may serve as a reinforcing rib. The bottom surface groove 101 may be provided on the side of the bottom surface 10 facing the accommodating space 12 or on the side of the bottom surface 10 facing away from the accommodating space 12. In this embodiment, the bottom surface groove 101 is provided on both sides of the bottom surface 10. The bottom surface groove 101 and the bottom surface 10 are integrally formed, such as by die-casting, drawing, stamping, etc. The bottom surface groove 101 is raised or recessed relative to the bottom surface 10 to form a three-dimensional structure, which further enhances the structural strength of the bottom surface 10.

[0446] The base 1 may also be provided with a hanging member 4 comprising a plurality of hooks 43 connected to the chassis 1. The number of hooks 43 may be one or more, and the hooks 43 may be located in the center of the bottom surface 10 or at the periphery of the bottom surface 10. In this embodiment, there are four hooks 43, located at two opposing edges of the bottom surface 10, i.e., two hooks 43 are provided on each side. The hooks 43 may be connected to the bottom surface 10 by gluing, welding, snap-fitting, or screwing. The hooks 43 may be located elsewhere on the bottom surface 10 or sidewall 11.

[0447] The optical assembly 2 is disposed in the accommodating space 12 and may include a light source assembly 20 and an optical component 21. The light source assembly 20 is disposed on the bottom surface 10 of the base 1, and the optical component 21 is disposed on a side of the light source assembly 20 away from the base 1, that is, the optical component 21 covers the light source assembly 20. The light source assembly 20 can generate and emit light, and the light from the light source assembly 20 can pass through the optical component 21. The optical component 21 can process the light generated by the light source assembly 20, which can be one of light projection, light reflection, light diffusion, light refraction, light diffraction, etc., or a combination of multiple thereof. The optical component 21 may include a directional diffusion film 213. The directional diffusion film 213 may deflect light in a specific direction through a micro-optical array structure arranged on its surface, such as a micro-prism array or a protrusion array; or the directional diffusion film 213 itself is composed of plate-shaped areas of different refractive indices arranged alternately and parallelly along any direction of the film surface to guide the light to diffuse in a specific direction, that is, the directional diffusion film 213 has the function of diffusing light in a specific direction. In some embodiments, the directional diffusion film 213 may also be called a batwing diffusion film, a batwing film, an anisotropic diffusion film, or a unidirectional diffusion film. The directional diffusion film 213 may be, for example, a Bright View's B-series, namely bat-wing diffuser, can also be a diffuser with a specific surface microstructure as described in patent CN110998176B, that is, the directional diffusion film 213 in this article can be described as bat-wing diffuser, bat-wing film, anisotropic diffuser, and unidirectional diffuser. The directional diffusion film 213 can diffuse the light processed by it or passing through the directional diffusion film 213 in a predetermined direction, that is, it diffuses light in a biased manner to achieve different light-emitting effects, such as realizing a bat-wing light type.

[0448] Please refer to FIG122A, which is a simplified schematic diagram of a directional diffuser 213 in accordance with an embodiment of the present invention. As shown, the directional diffuser 213 can be implemented as a rectangular structure, more specifically, a square structure. The diffusion direction of the directional diffuser 213 is indicated by the arrows in the figure. After being treated with the directional diffuser 213, light passing through it diffuses toward opposite sides of the rectangle, rather than randomly diffusing to form uniform light output on all sides (top, bottom, left, and right). Subsequent light output is concentrated toward opposite sides. Of course, when the directional diffuser 213 is positioned in a coordinate system, its light diffusion direction can also be described as primarily concentrated in the positive and negative directions of the X-axis, rather than uniformly diffusing in both the positive and negative directions of the X-axis and the positive and negative directions of the Y-axis to form a Lambertian light pattern.

[0449] In some embodiments, in the same LED lighting fixture 100, the diffusion direction of the directional diffusion film 213 can be set to one or more, or in other words, it has at least two diffusion directions. The directional diffusion film 213 can change the light output direction of the LED lighting fixture 100 to increase the beam angle of the light output of the LED lighting fixture 100, so that the light type after the light output of the LED lighting fixture 100 is a batwing light type or an improved Lambertian type, further improving the light output effect of the LED lighting fixture 100, meeting the lighting requirements of specific occasions, and enhancing the visual effect. Of course, the directional diffusion film 213 can also have only one diffusion direction, but its diffusion direction can vary depending on the placement (orientation) of the directional diffusion film 213. The directional diffusion film 213 is used to directional control the light output of the light source assembly 20, that is, the final direction of its diffusion direction is the light concentration direction, thereby achieving purposeful control of the light concentration area, thereby achieving a batwing light type or an improved Lambertian type.

[0450] Referring to Figure 119 , there are multiple directional diffusers 213, corresponding to the number of LED arrays 203. One directional diffuser 213 is provided for each LED array 203. The directional diffusers 213 are positioned in front of the light output direction of the LED array 203, and light from the LED array 203 is emitted through the directional diffusers 213. Each directional diffuser 213 is independent of each other. By changing the installation orientation of the directional diffuser 213, the relative position of the directional diffuser 213 relative to the light source assembly 20 can be changed, thereby changing the diffusion direction of the directional diffuser 213 and thus the light pattern of the light emitted by the LED lighting fixture 100. The multiple directional diffusers 213 can be arranged in various combinations to form a variety of light patterns for the light emitted by the LED lighting fixture 100.

[0451] Referring to FIG. 122B , which is a schematic diagram of the distribution of a directional diffusion film 213 of an LED lighting fixture 100 in an embodiment of the present invention, combined with FIG. 122A , in one embodiment, the LED lighting fixture 100 is provided with sixteen directional diffusion films 213 distributed in a 4*4 pattern, and the light diffusion direction formed by each directional diffusion film 213 for the outgoing light is in the same direction relative to the LED lighting fixture 100, as indicated by the arrow in FIG. 122B .

[0452] As shown in Figure 122B , a mutually perpendicular XY rectangular coordinate system is established using the length and width of the LED lighting fixture 100. Viewed from the front of the LED lighting fixture 100, the optical unit 211 comprises sixteen optical components 21, with four optical components 21 arranged in a row along the X direction and four optical components 21 arranged in a column along the Y direction. Each optical component 21 is provided with a corresponding directional diffuser 213, meaning there are sixteen directional diffusers 213, with four directional diffusers 213 arranged in a row along the X direction and four directional diffusers 213 arranged in a column along the Y direction. Each directional diffuser 213 has two diffusion directions, one oriented in the positive and one in the negative direction of the X axis. As shown in FIG122B , in an LED lighting fixture 100, the diffusion directions of the directional diffusion films 213 are set to be the same, that is, the diffusion directions of each directional diffusion film 213 are all along the positive direction and the negative direction of the X-axis, that is, the diffusion direction is along the two opposite outer frames of the LED lighting fixture 100, more specifically, along the two frames in the positive and negative directions of the X-axis, so that the final light output of the LED lighting fixture 100 has a light intensity / luminous flux along the positive and negative directions of the X-axis that is significantly greater than the light intensity / luminous flux along the positive and negative directions of the Y-axis, that is, based on the XY coordinate. From a standard perspective, with the center of the LED lighting fixture 100 as the origin and the center of the circle, on a circle with the same radius, the light intensity near the X-axis is significantly greater than the light intensity / luminous flux near the Y-axis. That is, the light intensity / luminous flux distribution is centered on a light source. At equal distances from the light source, the light intensity / luminous flux along the X-axis is significantly greater than the light intensity / luminous flux along the Y-axis, thus forming a batwing light pattern that diffuses in both directions. That is, the optical diffusion direction is along the X-axis, with the light source (the center of the fixture) as the center (the center of the circle), and the light is concentrated to both sides (the X-axis). Refer to Figure 123, which shows a light pattern after the LED lighting fixture 100 emits light in one embodiment of the present invention. The diffusion direction of the directional diffusion film 213 is set as shown in Figure 122B, resulting in a batwing light pattern after the LED lighting fixture 100 emits light, improving the light output effect of the LED lighting fixture 100, meeting the lighting requirements of specific occasions, and enhancing the visual effect.

[0453] As shown in Figure 124, a rectangular coordinate system is established using the length and width of the LED lighting fixture 100. Viewed from the front of the LED lighting fixture 100, the optical unit 211 includes sixteen optical components 21, with four optical components 21 arranged in a row along the X direction and four optical components 21 arranged in a column along the Y direction. Each optical component 21 is provided with a corresponding directional diffuser 213, meaning there are sixteen directional diffusers 213, with four directional diffusers 213 arranged in a row along the X direction and four directional diffusers 213 arranged in a column along the Y direction. Each directional diffuser 213 has two diffusion directions. The four directional diffusers 213 in the first column and the four directional diffusers 213 in the fourth column each have two diffusion directions oriented toward the positive and negative directions of the X axis, respectively. The four directional diffusers 213 in the second column and the four directional diffusers 213 in the third column each have two diffusion directions oriented toward the positive and negative directions of the Y axis, respectively. That is, the diffusion directions of the directional diffusion films 213 in the first and fourth rows are perpendicular to the diffusion directions of the directional diffusion films 213 in the second and third rows. That is, half of the light is diffused along the positive and negative directions of the X-axis, and the other half is diffused along the positive and negative directions of the Y-axis. The distribution is uniform and symmetrical. Ultimately, when viewed from the XY coordinate system of the LED lighting fixture 100 and with the center of the LED lighting fixture 100 as the origin and the center, the light intensity / luminous flux in the X-axis direction and the light intensity / luminous flux in the Y-axis direction on the circumference of the same radius are approximately similar. That is, the light intensity / luminous flux distribution is such that, with the light source as the center and at equal distances from the light source, the light intensity / luminous flux on both sides (near the X-axis direction) is approximately similar to that in the center (near the Y-axis direction). This results in uniform diffusion in all directions (positive and negative directions of X and Y). That is, with the light source (the center of the fixture) as the center, the light intensity / luminous flux is uniformly distributed in the circumference, thereby achieving or improving a Lambertian light pattern.

[0454] Referring to FIG. 124 , which is a schematic diagram illustrating another distribution of directional diffusion films 213 in an LED lighting fixture 100 according to an embodiment of the present invention, the LED lighting fixture 100 is provided with sixteen directional diffusion films 213 arranged in a 4*4 pattern. The diffusion directions of the two middle rows of directional diffusion films 213 are oriented in the same direction relative to the LED lighting fixture 100, and the diffusion directions of the two rows of directional diffusion films 213 on both sides are oriented in the same direction relative to the LED lighting fixture 100 and are arranged perpendicular to the diffusion directions of the two middle rows of directional diffusion films 213 relative to the LED lighting fixture 100. In other words, the directional diffusion films 213 have at least two diffusion directions, and the two diffusion directions are perpendicular to each other. In other words, the diffusion directions are uniformly distributed around the entire periphery of the LED lighting fixture 100, as indicated by the arrows in FIG. 124 .

[0455] Referring to Figure 125 , another embodiment of the present invention illustrates another light pattern produced by an LED lighting fixture 100. The diffusion direction of the directional diffusion film 213 is arranged as shown in Figure 124 , resulting in a modified Lambertian light pattern. This improves the light output of the LED lighting fixture 100, meeting the lighting requirements of specific occasions and enhancing visual quality.

[0456] In some embodiments, the diffusion directions of adjacent directional diffusion films 213 in each row may cross each other (not limited to perpendicularity), or the diffusion directions of adjacent directional diffusion films 213 in each column may be parallel to each other.

[0457] In one embodiment, the light source assembly 20 can be directly or indirectly mounted on the bottom surface 10, such as by gluing, welding, snap-fitting, or screwing. There can be one or more circuit boards 202, and the lengths of each circuit board 202 can be the same or different, depending on actual needs. The circuit boards 202 can be made of, but are not limited to, flexible printed circuit boards (FPCs), printed circuit boards (PCBs), aluminum substrates, or other materials that can provide circuit conductivity and function as circuit boards. The circuit boards 202 can be arranged along the length or width of the bottom surface 10, or can be arranged intersecting the length and width of the bottom surface 10. The circuit boards 202 can be arranged approximately parallel to the bottom surface 10, or can be arranged at an angle to the bottom surface 10. By adjusting the number and arrangement of the circuit boards 202, LED lighting fixtures 100 with varying brightness and light output can be obtained. Each circuit board 202 is provided with at least one LED array 203, which can be located on either side of the circuit board 202 or on both sides. The LED array 203 can be an array of LED chips or an array of other light-emitting devices.

[0458] Referring to Figure 119, in one embodiment of the present invention, the optical component 21 may further include a prism plate 214 and an optical unit 211. There may be multiple prism plates 214, corresponding to the number of LED arrays 203, with one prism plate 214 corresponding to one LED array 203. The prism plate 214 is positioned in front of the light emission direction of the LED array 203, i.e., on the side of the LED array 203 away from the bottom surface 10. Light from the LED array 203 is emitted through the prism plate 214, which can refract or reflect the light, or both, thereby achieving light diffusion and scattering. When light from the LED lighting fixture 100 passes through the prism plate 214, it is dispersed into multiple directions, achieving a more uniform lighting effect. Furthermore, the material and design of the prism plate 214 can also affect the color temperature, color reproduction, and other aspects of the light. Therefore, multiple factors need to be considered when selecting and designing an LED lamp. The prism plate 214 can convert the direct light emitted by the light source array 2012 into scattered light, achieving a more uniform lighting effect. In this embodiment, the directional diffusion film 213 is disposed in front of the prism plate 214. In other words, the light from the LED array 203 first passes through the prism plate 214 and then exits through the directional diffusion film 213, achieving multiple light processing, or multiple light diffusion.

[0459] Referring to Figures 119 and 120, the optical unit 211 includes optical components 21. The number of optical components 21 corresponds to the number of LED arrays 203, with one optical component 21 corresponding to one LED array 203. The optical component 21 can accommodate the LED array 203. The multiple optical components 21 can be independent of each other, that is, each optical component 21 is independently formed. The multiple optical components 21 are joined together to form the optical unit 211 by gluing, welding, snap-fitting, or screwing. Alternatively, several optical components 21 can be integrally formed and then joined together to form the optical unit 211 by gluing, welding, snap-fitting, or screwing. By joining the optical components 21, different numbers and shapes of optical units 211 can be formed as needed to meet the needs of different application scenarios. This also facilitates the replacement of damaged optical components 21 without having to replace the entire optical unit 211, thus reducing maintenance costs. Of course, in one embodiment, the optical unit 211 can also be formed integrally from multiple optical components 21.

[0460] In another embodiment of the present invention, the optical component 21 can be an inverted prism structure, i.e., a reflective cup structure. The prism surface of the optical component 21 has a window, i.e., a through hole extending through the prism surface of the optical component 21. Referring to Figures 120 and 121, the end of the optical component 21 with the smaller opening faces the light source assembly 20. A first engaging portion 211262 is provided on the end of the optical component 21 proximal to the light source assembly 20. The directional diffuser 213 and the prism plate 214 are connected to the optical component 21 via the first engaging portion 211262. The directional diffuser 213 and the prism plate 214 can be connected to different first engaging portions 211262, or they can be simultaneously engaged with the same first engaging portion 211262, in which case the directional diffuser 213 and the prism plate 214 are connected to each other. The directional diffusion film 213 can form a sealing structure with the opening of the optical component 21 to prevent foreign matter such as dust and insects from entering the LED lighting fixture 100 through the side wall 11 .

[0461] 120 and 121 , a support portion 21126 is provided at one end of the optical member 21, adjacent to the light source assembly 20. The support portion 21126 is preferably integrally formed with the optical member 21. The support portion 21126 contacts the bottom surface 10, creating a gap between the optical member 21 and the bottom surface 10. This gap can also create a gap between the directional diffusion film 213 and the prism plate 214 and the bottom surface 10.

[0462] The LED lighting fixture 100 further includes a power supply 3 and a power cord box 6 . The installation positions of the power supply 3 and the power cord box 6 are the same as or similar to those in the above embodiment.

[0463] Referring to FIG. 111C , a third embodiment of a circuit board 202 according to the present invention is shown. The circuit board 202 has a concave portion 2021 and a convex portion 2022 disposed opposite each other. The circuit board 202 may also be provided with one or more circuit board mounting holes 2023. For example, screws or other fasteners may be inserted through the circuit board mounting holes 2023 to secure the circuit board 202 to the bottom surface 10. Alternatively, adhesive or heat dissipation adhesive may be applied to both the front and back surfaces of the circuit board 202 and the bottom surface 10 to secure them together, thereby enhancing the connection strength between the circuit board 202 and the bottom surface 10.

[0464] Referring to FIG. 111D , which is a schematic diagram of cutting a plurality of circuit boards 202 according to the present invention, the width of the recessed portion 2021 of the circuit board 202 is roughly equal to the width of the raised portion 2022 of the circuit board 202. During cutting, the recessed portion 2021 and the raised portion 2022 are staggered along the length direction of the circuit board 202, so that more individual circuit boards 202 can be cut out of a circuit board of the same area.

[0465] Referring to Figures 126 and 127, Figure 126 is a schematic diagram of an LED lighting fixture 100 in one embodiment of the present invention, and Figure 127 is a schematic diagram of a forward decomposition of the LED lighting fixture 100 in one embodiment of the present invention, or a decomposition diagram along the light-emitting direction. As shown in the figure, a rectangular coordinate system is established with the light-emitting direction of the LED lighting fixture 100 as the Z-axis, and the decomposition diagram of the LED lighting fixture 100 is decomposed along the positive direction of the Z-axis. The LED lighting fixture 100 includes: a base 1 and an optical component 2 disposed at the bottom (i.e., the LED lighting fixture 100 is at the lowest position on the Z-axis), the optical component 2 being disposed on the base 1, and the LED lighting fixture 100 may further include a support member 51, the support member 51 being connected to the base 1 and fixing the optical component 2 to the base 1, i.e., the support member 51 and the base 1 clamp the optical component 2. This embodiment has the same basic structure as the aforementioned embodiment, with the difference being that in this embodiment, the independent optical bearing portion 22 of the aforementioned embodiment is eliminated, and a support portion 21126 (refer to FIG135 ) is provided with an optical component 21 to implement part or all of the functions of the optical bearing portion 22 of the aforementioned embodiment; referring to FIG127 , a reflective paper 216 is added, and the prism plate 214 is replaced with a light guide plate 215, and the light source assembly 20 is provided on both sides of the light guide plate 215 so that the light emitted by the light source assembly 20 enters from the side of the light guide plate 215, thereby improving the light emission effect of the LED lighting fixture 100, meeting the lighting requirements of specific occasions, and enhancing the visual effect.

[0466] Referring to FIG. 127 , specifically, the base 1 includes a bottom surface 10 and sidewalls 11, which are generally parallel to a horizontal plane or XY plane. The sidewalls 11 extend generally in the same direction along the Z axis, i.e., in the positive direction of the Z axis. The sidewalls 11 and the bottom surface 10 form a recess with an opening, i.e., the bottom surface 10 and the sidewalls 11 form a receiving space 12, and at least a portion of the optical component 2 is received within the receiving space 12. Preferably, the sidewalls 11 are inclined relative to the bottom surface 10 and are inclined outward, i.e., they are inclined away from the optical component 2. Alternatively, the distance between opposing sidewalls 11 gradually increases along the light emission direction of the LED lighting fixture 100.

[0467] For ease of description below, the light emitting direction of the LED lighting fixture 100 is referred to as upward, that is, the positive direction of the Z axis is referred to as upward. The bottom surface 10 is roughly rectangular, such as a square or a rectangle, and can also be set to other shapes as needed. In the present embodiment, the bottom surface 10 is rectangular, and the bottom surface 10 has a relative length and width. The material of the bottom surface 10 is preferably a metal material to ensure the structural strength of the bottom surface 10 and avoid deformation during use. The material of the bottom surface 10 is more preferably a metal material with good thermal conductivity, which is beneficial to the heat dissipation of the LED lighting fixture 100. At the same time, the metal material has a high structural strength, which ensures the stability of the operation of the LED lighting fixture 100 and can also extend the service life of the LED lighting fixture 100.

[0468] The bottom surface 10 can also be made of a light-transmitting material, such as a transparent material, a translucent material, or an opaque material. When it is desired that some light be emitted from the back of the LED lighting fixture 100, the bottom surface 10 can be made of a transparent or translucent material. This allows some light to be emitted from the back of the LED lighting fixture 100, eliminating dark shadows on the back of the LED lighting fixture 100 and improving the overall lighting effect of the LED lighting fixture 100. The bottom surface 10 can be fully light-transmitting, partially light-transmitting, or at least partially light-transmitting. Of course, it can also be completely opaque.

[0469] In some embodiments, the base 1 can be made of a color-changing material, such as an electrochromic material or a thermochromic material, and the light transmittance of the base 1 can vary between 0% and 100%. That is, the bottom surface 10 and side walls 11 of the base 1 are made of a color-changing material, and the light transmittance of the bottom surface 10 and side walls 11 of the base 1 varies between 0% and 100%.

[0470] In some embodiments, the bottom surface 10 and the side wall 11 of the base 1 are made of a color-changing material, and the light transmittance of at least one of the bottom surface 10 and the side wall 11 of the base 1 changes within a range of 0% to 100%.

[0471] The sidewall 11 can be disposed at or near the outer edge of the bottom surface 10. The sidewall 11 surrounds the bottom surface 10, forming a ring-shaped structure connected end to end, and forms a receiving space 12 with the bottom surface 10. The sidewall 11 not only enhances the overall structural strength of the base 1, but also prevents foreign matter such as dust and insects from entering the LED lighting fixture 100 through the sidewall 11. In some embodiments, the base 1 may include multiple sidewalls 11 spaced apart.

[0472] Sidewall 11 extends along the light-emitting direction of LED lighting fixture 100, forming a certain height. Together with bottom surface 10, it forms an accommodation space 12. The height of sidewall 11 determines the depth of accommodation space 12. Optical assembly 2 is disposed within accommodation space 12, and the height of sidewall 11 can be adjusted based on actual needs. In this embodiment, the thickness of optical assembly 2 in the light-emitting direction of LED lighting fixture 100 is less than or equal to the depth of accommodation space 12, that is, less than or equal to the height of sidewall 11 in the light-emitting direction of LED lighting fixture 100. This controls the height of LED lighting fixture 100 and facilitates subsequent assembly.

[0473] The sidewall 11 can be made of either a light-transmitting material or an opaque material, such as a transparent material, a translucent material, or an opaque material, or at least two of these materials. This can be configured as needed to meet the lighting requirements of different occasions, such as making the sidewall 11 completely transparent, completely opaque, partially transparent, or partially opaque (or at least partially transparent, or at least partially opaque, and the bottom surface 10 can also be the same). The sidewall 11 is preferably made of metal, and more preferably metal has good thermal conductivity, while ensuring the strength and heat dissipation of the sidewall 11.

[0474] The side wall 11 and the bottom surface 10 can be a split structure or an integrally formed structure. When the side wall 11 and the bottom surface 10 are a split structure, the side wall 11 and the bottom surface 10 can be connected by gluing, welding, snapping or screw locking. When the side wall 11 and the bottom surface 10 are an integrally formed structure, the material of the side wall 11 and the bottom surface 10 is preferably the same material, which is beneficial to the production and manufacturing of the base 1. The side wall 11 and the bottom surface 10 adopt an integrally formed structure, which can improve the bonding force between the side wall 11 and the bottom surface 10, and can also improve the dimensional accuracy of the base 1. It is also beneficial to batch manufacturing and reduces production costs. For example, the bottom surface 10 and the side wall 11 are formed by integrally stamping the same material, such as metal material, or by bending on a metal surface to form the side wall 11 and the bottom surface 10.

[0475] Referring to Figures 129 and 131, Figure 131 is a partial enlarged view of point B' in Figure 129. A limiting portion 135 can be provided at the end of the side wall 11 away from the bottom surface 10. The limiting portion 135 is arched toward the direction of light emission of the LED lighting fixture 100. The limiting portion 135 is arranged around the side wall 11 to form a limiting portion 135 with an annular structure connected end to end. The limiting portion 135 can not only enhance the overall structural strength of the base 1, but also when the support member 51 and the base 1 clamp the optical component 2, the limiting portion 135 can abut against the optical component 2, so as to better fix the optical component 2. The stopper 135 can also have a certain degree of elasticity, so that it can be used to clamp optical components 2 of different thicknesses. That is, when the stopper 135 corresponds to a thicker optical component 2, the deformation of the stopper 135 increases, which can stably clamp the optical component 2. When the stopper 135 corresponds to a thinner optical component 2, the deformation of the stopper 135 decreases, which can also stably clamp the optical component 2. In some embodiments, the base 1 can include multiple stoppers 135 arranged at intervals.

[0476] Referring to Figures 129 and 131 , a support portion 136 may be provided at the end of the stopper 135 away from the sidewall 11. The support portion 136 is disposed approximately parallel to the bottom surface 10 and surrounds the stopper 135, forming a ring-shaped support portion 136 that is connected end to end. When the support member 51 is connected to the base 1, the two can be connected by gluing, welding, snap-fitting, or screwing. In this embodiment, the support portion 136 is connected to the support member 51 via screws. Preferably, the outer edge of the support portion 136 is retracted from the outer edge of the support member 51, that is, the outer edge of the support portion 136 is located inward of the outer edge of the support member 51 and does not extend beyond the outer edge of the support member 51. In this way, when viewed from the front of the LED lighting fixture 100, the support member 51 can partially obscure the outer edge of the base 1, thereby enhancing the aesthetics of the LED lighting fixture 100. In some embodiments, the base 1 may include multiple spaced apart stoppers 135.

[0477] 129 and 131 , the support member 51 extends a certain distance parallel to the bottom surface 10. Specifically, the position of the support member 51 corresponding to the stopper 135 is preferably provided as a first wall 511. The first wall 511 and the stopper 135 jointly clamp the optical assembly 2. A stepped structure 5122 is provided on the outer side of the first wall 511. The stepped structure includes a first stepped portion 51225 and a second stepped structure 51226. The first stepped portion 51225 abuts against the support portion 136, while the second stepped structure 51226 surrounds the outer side of the support portion 136. The stepped structure 5122 enhances the structural strength of the support member 51. The first stepped portion 51225 surrounds the first wall 511, forming a first stepped portion 51225 connected end to end in an annular structure. The first step portion 51225 may be provided with a locking groove 51223. The locking groove 51223 may be U-shaped, and the side of the locking groove 51223 may be provided with threads (not shown). When the support portion 136 is connected to the support member 51 via screws, the screws match the threads on the side of the locking groove 51223, thereby further stabilizing the connection between the base 1 and the support member 51. The depth of the locking groove 51223 is preferably less than the length of the screw, and the length of the screw is preferably less than the depth of the first step portion 51225. When the support portion 136 is connected to the support member 51 via screws, the screws pass through the bottom of the locking groove 51223 without protruding from the surface of the support member 51. This further stabilizes the connection between the base 1 and the support member 51 while also enhancing the aesthetics of the LED lighting fixture 100. In some embodiments, the support member 51 may include multiple first step portions 51225 spaced apart.

[0478] Referring to Figures 129 and 131 , a second step portion 51226 may be provided outside the first step portion 51225. This second step portion 51226 further enhances the structural strength of the support member 51. The second step portion 51226 surrounds the first step portion 51225, forming a ring-shaped structure. In some embodiments, the support member 51 may include multiple second steps 51226 spaced apart. The first and second steps 51225, 51226 preferably protrude toward the bottom surface 10. This allows the side of the support member 51 facing the light output direction of the LED lighting fixture 100 to be flat, enhancing the overall aesthetics of the LED lighting fixture 100.

[0479] Referring to FIG. 127 , the bottom surface 10 may be provided with a bottom surface groove 101. This bottom surface groove 101 may serve as a reinforcing rib and may be provided on either the side of the bottom surface 10 facing the accommodating space 12 or the side of the bottom surface 10 facing away from the accommodating space 12. In this embodiment, the bottom surface groove 101 is provided on both sides of the bottom surface 10. The bottom surface groove 101 and the bottom surface 10 are integrally formed, such as by die-casting, drawing, or stamping. The bottom surface groove 101 may be raised or recessed relative to the bottom surface 10, forming a three-dimensional structure. The bottom surface groove 101 further enhances the structural strength of the bottom surface 10.

[0480] Referring to Figure 127, the base 1 may also be provided with hooks 43. The number of hooks 43 may be one or more. The hooks 43 may be provided in the middle position of the base 1 or in the peripheral position of the base 1. In this embodiment, the number of hooks 43 is four, and the hooks 43 are provided on two opposite supporting portions 136 of the base 1, that is, two hooks 43 are provided on each supporting portion 136. The hooks 43 and the base 1 may be connected by gluing, welding, snapping or screw locking. In this embodiment, the hooks 43 and the base 1 are connected by screws, and the screws can also be connected to the locking grooves 51223 of the support member 51. That is, the screws can connect the hooks 43, the base 1 and the support member 51 at the same time, reducing repeated connections and multiple drillings that damage the lamp body structure. At the same time, connecting multiple components at a time can reduce the use of fixing parts such as screws, thereby reducing the production cost of the LED lighting fixture 100.

[0481] The optical assembly 2 is disposed in the accommodating space 12 and may include a light source assembly 20 and an optical component 21. The light source assembly 20 may generate and emit light, and the light from the light source assembly 20 may pass through the optical component 21. The optical component 21 may process the light generated by the light source assembly 20, which may be one of light projection, light reflection, light diffusion, light refraction, light diffraction, etc., or a combination of multiple thereof.

[0482] Referring to FIG. 127 , the optical component 21 may include an optical unit 211, a directional diffuser 213, and a light guide plate 215. The directional diffuser 213 and light guide plate 215 are arranged parallel or substantially parallel to the bottom surface 10, with the directional diffuser 213 positioned on the side of the light guide plate 215 facing away from the bottom surface 10. The light source assembly 20 is positioned on opposite sides of the light guide plate 215, i.e., the light source assembly 20 is positioned perpendicular or substantially perpendicular to the bottom surface 10, so that light emitted by the light source assembly 20 enters the light guide plate 215 from opposite sides. Of course, the light source assembly 20 may also be positioned on one side, any two sides, any three sides, or all four sides of the light guide plate 215. The light source assembly 20 includes a circuit board 202 and an LED array 203 disposed on the circuit board 202. There may be one or more circuit boards 202, and the lengths of each circuit board 202 may be the same or different, depending on actual needs. The circuit board 202 can be a plate material such as an FPC, PCB, or aluminum substrate that can be used for circuit conduction and realize the function of a circuit board, but is not limited thereto. The circuit board 202 can be arranged along the length or width direction of the bottom surface 10, or can be arranged crosswise along the length and width directions of the bottom surface 10. The circuit board 202 can be arranged approximately perpendicular to the bottom surface 10, or can be arranged at an angle to the bottom surface 10. By adjusting the number and arrangement of the circuit boards 202, LED lighting fixtures 100 with different brightness and light output effects can be obtained. At least one LED array 203 is arranged on each circuit board 202. The LED array 203 can be arranged on any side of the circuit board 202 or on both sides of the circuit board 202. The LED array 203 can be an array of LED chips or an array composed of other light-emitting devices. Referring to Figure 111E, the LED array 203 is preferably arranged in a straight line, but other arrangements are also possible. The LED array 203 is preferably arranged in the middle or approximately in the middle of the thickness direction of the light guide plate 215.

[0483] The light generated by the light source assembly 20 first passes through the light guide plate 215, which refracts or reflects the light and guides the light to the directional diffusion film 213. The light passes through the directional diffusion film 213, which diffuses the light in a predetermined direction, that is, it diffuses the light in a biased manner to achieve different light-emitting effects, and finally irradiates the light through the optical unit 211. This design can change the light output direction from being perpendicular to the bottom surface 10 to being parallel to the bottom surface 10 and then perpendicular to the bottom surface 10, that is, changing the light path of the LED lighting fixture 100. Without changing the thickness of the lighting fixture 100, it can increase the distance that light travels inside the lighting fixture 100, thereby reducing the graininess and glare when the LED lighting fixture emits light. In traditional designs, this distance is perpendicular to the bottom surface 10, which in turn affects the thickness of the LED lighting fixture. In the present invention, the light emitted by the LED array 203 will first enter the light guide plate 215 parallel to the bottom surface 10 in a direction parallel to the bottom surface 10, and then turn away from the bottom surface 10 to leave the light guide plate 215 and reach the optical unit 211. At least part of the light path is parallel to the bottom surface 10, thereby reducing the thickness of the LED lighting fixture 100.

[0484] The light guide plate 215 can receive light on the incident surface of the light and transmit it to the exit surface, thereby realizing the transmission and guidance of light, that is, the light guide plate 215 can guide light from one position to another, so that light energy can be effectively propagated and utilized. The light guide plate 215 can convert unevenly distributed light into evenly distributed light. Through the internal optical structure, the light guide plate 215 can cause the light to be reflected and refracted multiple times during the transmission process, thereby uniformizing the originally uneven light. The light guide plate 215 can diffuse the light from the point light source to form a wider lighting range. The structure, distribution and function of the directional diffusion film 213 are the same or similar to those in the above embodiment and will not be repeated here.

[0485] Referring to Figure 127, the optical component 21 can also include reflective paper 216, which is arranged between the light guide plate 215 and the bottom surface 10, that is, the reflective paper 216 is arranged on the side of the light guide plate 215 close to the bottom surface 10. When part of the light emitted by the light source assembly 20 is reflected or refracted onto the reflective paper 216 by the light guide plate 215, the reflective paper 216 can reflect this part of the light back to the light guide plate 215 again, so that the light is finally irradiated through the optical unit 211, avoiding the light loss of the light source assembly 20 and improving the luminous efficiency of the LED lighting fixture 100.

[0486] Preferably, multiple directional diffusion films 213, light guide plates 215, and reflective paper 216 are provided in a one-to-one correspondence, with an LED array 203 positioned on opposite sides of each light guide plate 215. Compared to a single, large-area directional diffusion film 213, light guide plate 215, and reflective paper 216, multiple, independent, small-area directional diffusion films 213, light guide plates 215, and reflective paper 216 are more affordable, reducing production costs. Furthermore, they facilitate setting or changing the diffusion direction of the directional diffusion film 213 and facilitate replacement of the directional diffusion film 213, light guide plate 215, and reflective paper 216, thereby reducing maintenance costs for the LED lighting fixture 100.

[0487] The light source assembly 20 can be directly or indirectly disposed on the base 1 or the optical component 21, such as by gluing, welding, snapping or screwing. In this embodiment, the light source assembly 20 is fixed to the optical component 21 by snapping.

[0488] Referring to Figures 134 and 135 , Figure 135 is a partial enlarged view of point D' in Figure 134 . Specifically, the optical unit 211 includes an optical member 21. There are multiple optical members 21, corresponding to the number of light guide plates 215. The optical member 21 can be an inverted pyramid structure, i.e., a reflective cup structure. In this embodiment, the pyramid structure is a quadrangular pyramid. Referring to Figure 134 , the pyramidal surface of the optical member 21 has a light exit hole 211243, i.e., a through hole extending through the pyramidal surface of the optical member 21. In this embodiment, the optical member 21 includes optical walls 21124 arranged end-to-end around the light exit hole 211243. The end of the optical member 21 with the smaller opening faces the bottom surface 10 and is provided with a support portion 21126. Specifically, the support portion 21126 is provided on the side of the optical member 21 closest to the bottom surface 10. The support portion 21126 extends in a direction closer to the bottom surface 10 and is preferably integrally formed with the optical member 21. The support portions 21126 are preferably provided in pairs, one on each side of the optical member 21. That is, when one support portion 21126 is provided on each side of the optical member 21, each optical member 21 may be provided with two or four support portions 21126. In this embodiment, each optical member 21 is provided with four support portions 21126, and the four support portions 21126 are spaced apart from each other, i.e., the four support portions 21126 are independently provided. Referring to Figures 128 to 133, wherein Figure 133 is a partial enlarged view of point C' in Figure 132, the support portions 21126 have a certain degree of elasticity, and the corresponding two support portions 21126 form an interference fit with the directional diffuser film 213, the light guide plate 215, the reflective paper 216, and the circuit board 202, i.e., the corresponding two support portions 21126 exert a clamping force on the directional diffuser film 213, the light guide plate 215, the reflective paper 216, and the circuit board 202. The directional diffusion film 213, light guide plate 215, reflective paper 216, and a portion of the circuit board 202 can be held by the support portions 21126. This facilitates installation and removal of the directional diffusion film 213, light guide plate 215, reflective paper 216, and a portion of the circuit board 202, and prevents the directional diffusion film 213, light guide plate 215, reflective paper 216, and circuit board 202 from shaking during use. In some embodiments, each side of the optical member 21 may be provided with multiple support portions 21126 spaced apart.

[0489] As a preferred embodiment, referring to Figures 129, 130, 132, and 133, Figure 130 is a partial enlarged view of point A' in Figure 129. The support portion 21126 is disposed on the outside of the optical wall 21124, that is, on the side of the optical wall 21124 facing the base 1, or in other words, on the non-light-emitting surface of the optical member 21. A connecting portion 211261 is formed between the support portion 21126 and the optical wall 21124. The connecting portion 211261 may be flush with the end of the optical wall 21124 near the bottom surface 10, or may be at a different level than the end of the optical wall 21124 near the bottom surface 10. In this embodiment, referring to Figures 129 and 130 , the connection portion 211261 of the circuit board 202 is positioned lower than the end of the optical wall 21124 near the bottom surface 10. Specifically, the support portion 21126, the connection portion 211261, and a portion of the optical wall 21124 near the bottom surface 10 form a recess for accommodating the circuit board 202. Referring to Figures 132 and 133 , the connection portion 211261, where the circuit board 202 is not positioned, is flush with the end of the optical wall 21124 near the bottom surface 10. When the optical assembly 2 is mounted on the base 1, referring to Figures 129 and 130 , the connection portion 211261 on one side of the circuit board 202 abuts the circuit board 202, the end of the optical wall 21124 near the bottom surface 10 abuts the directional diffusion film 213, and at least a portion of the support portion 21126 near the bottom surface 10 abuts the bottom surface 10. Referring to Figures 127, 132, and 133, the connecting portion 211261 on the side without the circuit board 202 and the end of the optical wall 21124 near the bottom surface 10 are perpendicularly abutted against the circuit board 202. Specifically, they are inserted into the gap between adjacent light guide plates 215 and parallel to the side of the light guide plate 215 without the circuit board 202. At least a portion of the supporting portion 21126 near the bottom surface 10 abuts against the bottom surface 10. In other words, the supporting portion 21126, optical wall 21124, connecting portion 211261, and bottom surface 10 jointly clamp the directional diffusion film 213, light guide plate 215, reflective paper 216, and circuit board 202. In this way, the physical structure of the components provides for positional restraint, further stabilizing the positions of the directional diffusion film 213, light guide plate 215, reflective paper 216, and circuit board 202.

[0490] Preferably, the side of the circuit board 202 closest to the bottom surface 10 is flush with the end of the support portion 21126 closest to the bottom surface 10. This ensures that both ends of the circuit board 202 abut the connecting portion 211261 and the bottom surface 10, respectively, further stabilizing the position of the circuit board 202. Furthermore, the support portion 21126 is in contact with the bottom surface 10, maintaining a predetermined distance between the optical component 21 and the bottom surface 10. This also ensures that the reflective paper 216, light guide plate 215, and directional diffuser film 213 are spaced a predetermined distance from the bottom surface 10. This not only ensures the optical performance of the reflective paper 216, light guide plate 215, and directional diffuser film 213, but also prevents deformation of the bottom surface 10 that could damage the reflective paper 216, light guide plate 215, and directional diffuser film 213.

[0491] Referring to FIG. 122B , which is a schematic diagram illustrating the distribution of a directional diffusion film 213 in an LED lighting fixture 100 according to an embodiment of the present invention, combined with FIG. 122A , in one embodiment, the LED lighting fixture 100 is provided with sixteen directional diffusion films 213 distributed in a 4*4 pattern, and the light diffusion direction formed by each directional diffusion film 213 for outgoing light is in the same direction relative to the LED lighting fixture 100, as indicated by the arrow in FIG. 122B .

[0492] As shown in Figure 122B , a mutually perpendicular XY rectangular coordinate system is established using the length and width of the LED lighting fixture 100. Viewed from the front of the LED lighting fixture 100, the optical unit 211 comprises sixteen optical components 21, with four optical components 21 arranged in a row along the X direction and four optical components 21 arranged in a column along the Y direction. As shown in Figure 122B , each column of optical components 21 is flanked by a circuit board 202, each of which is equipped with four LED arrays 203. Each optical component 21 is provided with a corresponding directional diffuser 213, resulting in sixteen directional diffusers 213, with four directional diffusers 213 arranged in a row along the X direction and four directional diffusers 213 arranged in a column along the Y direction. Each directional diffuser 213 has two diffusion directions, one oriented in the positive and one in the negative direction of the X axis. As shown in FIG122B , in an LED lighting fixture 100, the diffusion directions of the directional diffusion films 213 are set to be the same, that is, the diffusion directions of each directional diffusion film 213 are along the positive direction and the negative direction of the X-axis, that is, the diffusion direction is along the two opposite outer frames of the LED lighting fixture 100, more specifically, along the two frames in the positive and negative directions of the X-axis, so that the final light output of the LED lighting fixture 100 has a significantly greater light intensity / luminous flux along the positive and negative directions of the X-axis than along the positive and negative directions of the Y-axis. That is, from the perspective of the XY coordinate system, the light intensity / luminous flux along the positive and negative directions of the X-axis is significantly greater than the light intensity / luminous flux along the positive and negative directions of the Y-axis. With the center of the ED lighting fixture 100 as the origin and the center of the circle, on a circle of the same radius, the light intensity at points near the positive and negative X-axis is significantly greater than the light intensity / luminous flux at points near the positive and negative Y-axis. That is, the light intensity / luminous flux distribution is such that, with a light source at the center and at equal distances from the light source, the light intensity / luminous flux at points on either side (along the X-axis) is significantly greater than that at the center (along the Y-axis), resulting in a bidirectionally diffused batwing light pattern. In other words, the optical diffusion direction is bidirectional along the X-axis, with the light source (the center of the fixture) as the center (the center of the circle), and the light is concentrated to both sides. See Figure 136 for an example of the light pattern of an LED lighting fixture 100 according to one embodiment of the present invention. The diffusion direction of the directional diffusion film 213 is arranged as shown in Figure 122B, resulting in a batwing light pattern after the LED lighting fixture 100 exits. This improves the light output of the LED lighting fixture 100, meeting the lighting requirements of specific occasions and enhancing the visual effect.

[0493] In some embodiments, the diffusion directions of adjacent directional diffusion films 213 in each row may cross each other (not limited to perpendicularity), or the diffusion directions of adjacent directional diffusion films 213 in each column may be parallel to each other.

[0494] In one embodiment, the light source assembly 20 can be directly or indirectly mounted on the bottom surface 10, such as by gluing, welding, snap-fitting, or screwing. There can be one or more circuit boards 202, and the lengths of each circuit board 202 can be the same or different, depending on actual needs. The circuit boards 202 can be, but are not limited to, flexible printed circuit boards (FPCs), printed circuit boards (PCBs), aluminum substrates, or other materials that can provide circuit conductivity and fulfill the function of a circuit board. The circuit boards 202 can be arranged along the length or width of the bottom surface 10, or can be arranged intersecting the length and width of the bottom surface 10. The circuit boards 202 can be arranged approximately parallel to the bottom surface 10, or can be arranged at an angle to the bottom surface 10. By adjusting the number and arrangement of the circuit boards 202, LED lighting fixtures 100 with varying brightness and light output can be obtained. Each circuit board 202 is provided with at least one LED array 203, which can be located on either side of the circuit board 202 or on both sides. The LED array 203 can be an array of LED chips or an array of other light-emitting devices.

[0495] Referring to FIG. 127 , the LED lighting fixture 100 further includes a power supply 3 and a power cord box 6. The installation locations of the power supply 3 and power cord box 6 are the same or similar to those in the above-described embodiments. The LED lighting fixture 100 further includes wiring terminals 7 and a connecting plate 8. The connecting plate 8 is used to electrically connect the multiple circuit boards 202. The connecting plate 8 is electrically connected to the power supply 3 via the wiring terminals 7. This reduces the number of connecting wires between the circuit boards 202 and the power supply 3 and facilitates installation and removal of the connecting plate 8 from the power supply 3.

[0496] Referring to Figures 137 and 138 , Figure 137 is a schematic diagram of an LED lighting fixture 100 according to one embodiment of the present invention, and Figure 138 is a schematic diagram of an exploded view of the LED lighting fixture 100 in a forward direction, or in other words, an exploded view along the light emission direction, according to yet another embodiment of the present invention. As shown in Figure 138 , a rectangular coordinate system is established with the light emission direction of the LED lighting fixture 100 as the Z-axis, and the exploded view of the LED lighting fixture 100 is exploded along the positive Z-axis. The LED lighting fixture 100 includes a base 1 disposed at the bottom (i.e., at the lowest position of the LED lighting fixture 100 along the Z-axis) and an optical assembly 2, which is disposed on the base 1. The basic structure of this embodiment is the same as that of the aforementioned embodiment, with the main difference being that in this embodiment, the independent optical bearing portion 22 and support member 51 of the aforementioned embodiment are eliminated, and a support portion 21126 is provided with the optical component 21 (refer to FIG151 , FIG151 is a partial enlarged view of J' in FIG145 ) to realize part or all of the functions of the optical bearing portion 22 of the aforementioned embodiment; referring to FIG138 , the prism plate 214, the light guide plate 215 and the reflective paper 216 are eliminated in this embodiment, and the directional diffusion film 213 is replaced by a diffuser 217. The diffuser 217 can diffuse light more effectively to the surroundings, reduce the light in the middle, form a bat-wing light pattern, improve the light output effect of the LED lighting fixture 100, meet the lighting requirements of specific occasions, and enhance the visual effect.

[0497] Referring to FIG. 138 , specifically, base 1 includes a bottom surface 10 and sidewalls 11, which are generally parallel to a horizontal plane or the XY plane. Sidewalls 11 extend generally in the same direction along the Z-axis, i.e., in the positive direction of the Z-axis. Sidewalls 11 and bottom surface 10 form a recess having an opening. In other words, bottom surface 10 and sidewalls 11 form a receiving space 12, and at least a portion of optical assembly 2 is received within receiving space 12. Preferably, sidewalls 11 are inclined relative to bottom surface 10 and are inclined outward, i.e., they are inclined away from optical assembly 2. In other words, the outward inclination of sidewalls 11 creates a base 1 with a large opening and a small bottom.

[0498] For the convenience of description below, the light emitting direction of the LED lighting fixture 100 is referred to as upward, that is, the positive direction of the Z axis is referred to as upward. The bottom surface 10 is roughly rectangular, such as a square or a rectangle, and can also be set to other shapes as needed. In the present embodiment, the bottom surface 10 is rectangular, and the bottom surface 10 has a relative length and width. In the present embodiment, the length and width of the bottom surface 10 are the same or roughly the same, that is, the bottom surface 10 is roughly square. The material of the bottom surface 10 is preferably a metal material to ensure the structural strength of the bottom surface 10 and avoid deformation during use. The material of the bottom surface 10 is more preferably a metal material with good thermal conductivity, which is beneficial to the heat dissipation of the LED lighting fixture 100. At the same time, the metal material has a high structural strength, which ensures the stability of the operation of the LED lighting fixture 100 and can also extend the service life of the LED lighting fixture 100.

[0499] The bottom surface 10 can also be made of a light-transmitting material, such as a transparent material, a translucent material, or an opaque material. When it is desired that some light be emitted from the back of the LED lighting fixture 100, the bottom surface 10 can be made of a transparent or translucent material. This allows some light to be emitted from the back of the LED lighting fixture 100, eliminating dark shadows on the back of the LED lighting fixture 100 and improving the overall lighting effect of the LED lighting fixture 100. The bottom surface 10 can be fully light-transmitting, partially light-transmitting, or at least partially light-transmitting. Of course, it can also be completely opaque.

[0500] Referring to FIG. 138 , bottom surface 10 may be provided with a bottom surface groove 101. Bottom surface groove 101 may serve as a reinforcing rib and may be provided on either the side of bottom surface 10 facing accommodating space 12 or the side of bottom surface 10 facing away from accommodating space 12. In this embodiment, bottom surface groove 101 is provided on both sides of bottom surface 10. Bottom surface groove 101 and bottom surface 10 are integrally formed, such as by die-casting, drawing, or stamping. Bottom surface groove 101 may be raised or recessed relative to bottom surface 10, forming a three-dimensional structure, which further enhances the structural strength of bottom surface 10.

[0501] The sidewall 11 can be disposed at or near the outer edge of the bottom surface 10. The sidewall 11 surrounds the bottom surface 10, forming a ring-shaped structure connected end to end, and forms a receiving space 12 with the bottom surface 10. The sidewall 11 not only enhances the overall structural strength of the base 1, but also prevents foreign matter such as dust and insects from entering the LED lighting fixture 100 through the sidewall 11. In some embodiments, the base 1 may include multiple sidewalls 11 spaced apart.

[0502] Sidewall 11 extends along the light-emitting direction of LED lighting fixture 100, forming a certain height. Together with bottom surface 10, it forms an accommodation space 12. The height of sidewall 11 determines the depth of accommodation space 12. Optical assembly 2 is disposed within accommodation space 12, and the height of sidewall 11 can be adjusted based on actual needs. In this embodiment, the thickness of optical assembly 2 in the light-emitting direction of LED lighting fixture 100 is less than or equal to the depth of accommodation space 12, that is, less than or equal to the height of sidewall 11 in the light-emitting direction of LED lighting fixture 100. This controls the height of LED lighting fixture 100 and facilitates subsequent assembly.

[0503] The side wall 11 can be made of a light-transmitting material or an opaque material, such as a transparent material, a translucent material, or an opaque material, or at least two of these materials. This can be set according to actual needs to meet the lighting needs of different occasions, such as making the side wall 11 completely transparent, or completely opaque, or partially transparent, or partially opaque (or at least partially transparent, or at least partially opaque, and the bottom surface 10 can also be the same). The material of the side wall 11 is preferably a metal material, and the material of the side wall 11 is more preferably a metal material with good thermal conductivity, while ensuring the strength and heat dissipation effect of the side wall 11. In this embodiment, the side wall 11 and the bottom surface 10 are preferably made of the same material.

[0504] The side wall 11 and the bottom surface 10 can be a split structure or an integrally formed structure. When the side wall 11 and the bottom surface 10 are a split structure, the side wall 11 and the bottom surface 10 can be connected by gluing, welding, snapping or screw locking. When the side wall 11 and the bottom surface 10 are an integrally formed structure, the material of the side wall 11 and the bottom surface 10 is preferably the same material, which is beneficial to the production and manufacturing of the base 1. The side wall 11 and the bottom surface 10 adopt an integrally formed structure, which can improve the bonding force between the side wall 11 and the bottom surface 10, and can also improve the dimensional accuracy of the base 1. It is also beneficial to batch manufacturing and reduces production costs. For example, the bottom surface 10 and the side wall 11 are formed by integrally stamping the same material, such as metal material, or by bending on a metal surface to form the side wall 11 and the bottom surface 10.

[0505] Referring to Figures 149A and 149B, where Figure 149B is an enlarged view of point I' in Figure 149, a mounting end wall 13 is provided at one end of the side wall 11 away from the bottom surface 10. A first mounting portion 138 and a second mounting portion 139 are provided on the mounting end portion 12. First mounting portion 138 is substantially parallel to the bottom surface 10, while second mounting portion 139 is substantially perpendicular to the bottom surface 10. Second mounting portion 139 bends toward the bottom surface 10, extending toward the bottom surface 10. First mounting portion 138 and second mounting portion 139 are integrally formed on the side wall 11, or in other words, are formed by bending the end of the side wall 11 away from the bottom surface 10.

[0506] Refer to Figures 149A, 138, 140 and 141, wherein Figure 140 is a schematic cross-sectional view of Figure 139 along CC, and Figure 141 is a partial enlarged view of E' in Figure 140. In this embodiment, the first mounting portion 138 can be arranged around the side wall 11 to form a first mounting portion 138 with an annular structure connected end to end. The first mounting portion 138 can not only enhance the overall structural strength of the base 1, but the optical component 2 can also be connected to the first mounting portion 138 by gluing, welding, clamping or screw locking to enhance the stability of the position of the optical component 2.

[0507] Referring to Figure 149A, the second mounting portion 139 can also be arranged around the side wall 11 to form a first mounting portion 138 with an annular structure connected end to end, or the second mounting portion 139 located at the corner of the base 1 can be cut off. This can prevent the second mounting portion 139 located at the corner of the base 1 from wrinkling, improve the overall flatness of the second mounting portion 139, and the second mounting portion 139 can also enhance the overall structural strength of the base 1.

[0508] Referring to Figures 138 and 149A , corner protectors 44 may be provided at the corners of the base 1. These protectors 44 are generally L-shaped, and there may be four of them. These protectors 44 may be provided at the four corners of the base 1 by gluing, welding, snap-fitting, or screwing. The corner protectors 44 enhance the structural strength of the corners of the base 1, preventing the risk of deformation of the base 1 due to removal of the second mounting portion 139 at the corners.

[0509] Referring to Figures 138, 139, and 148, the base 1 may also be provided with hooks 43. The number of hooks 43 may be one or more, and the hooks 43 may be located in the center of the base 1 or at the periphery of the base 1. In this embodiment, there are four hooks 43, each located on the corner protectors 44, with one hook 43 provided on each corner protector 44. Furthermore, the hooks 43 are provided on two opposing long sides of the base 1, meaning two hooks 43 are provided on each long side of the base 1. Alternatively, the hooks 43 are provided on two opposing wide sides of the base 1, meaning two hooks 43 are provided on each wide side of the base 1. The hooks 43 and corner protectors 44 may be connected by gluing, welding, snap-fitting, or screwing. In this embodiment, the hooks 43 and corner protectors 44 are connected by screws.

[0510] Referring to Figures 149A and 149B , the first mounting portion 138 may include one or more mounting portions parallel to the bottom surface 10. In this embodiment, the first mounting portion 138 includes a first horizontal mounting portion 1381 and a second horizontal mounting portion 1382. The first horizontal mounting portion 1381 is adjacent to and connected to the side wall 11, and the second horizontal mounting portion 1382 is adjacent to and connected to the second mounting portion 139. The first horizontal mounting portion 1381 and the second horizontal mounting portion 1382 may be located on the same horizontal plane, or in the same XY plane, or on different horizontal planes, or in different XY planes. In this embodiment, the first horizontal mounting portion 1381 and the second horizontal mounting portion 1382 are integrally formed and may be formed by bending. The first horizontal mounting portion 1381 and the second horizontal mounting portion 1382 are in different horizontal planes or in different XY planes, and along the positive direction of the Z axis, the first horizontal mounting portion 1381 is higher than the second horizontal mounting portion 1382, that is, in the positive direction of the Z axis, the first horizontal mounting portion 1381 is closer to the bottom surface 10, thereby enhancing the structural strength of the first mounting portion 138, thereby further enhancing the overall structural strength of the base 1.

[0511] Referring to Figures 148, 149A, and 149B, the first horizontal mounting portion 1381 may be provided with a plurality of through-holes 137. The through-holes 137 may have different functions, such as assembly holes or positioning holes. In one embodiment, the through-holes 137 include at least one assembly hole 1371 and at least one first positioning hole 1372. The assembly hole 1371 may be circular, square, or the like, and the first positioning hole 1372 may also be circular, square, or the like. There may be multiple assembly holes 1371 and multiple first positioning holes 1372. In this embodiment, the corner protector 44 is provided on the side of the first horizontal mounting portion 1381 and the second horizontal mounting portion 1382 facing the bottom surface 10. Partial surfaces of the corner protector 44 are in contact with or engaged with portions of the sidewall 11, the first horizontal mounting portion 1381, the second horizontal mounting portion 1382, and the first horizontal mounting portion 1381. Assembly hole 1371 is located near the bend of first horizontal mounting portion 1381, i.e., near the corner of base 1. Assembly hole 1371 is positioned corresponding to corner protector 44. Corner protector 44 can be screwed to assembly hole 1371, thereby connecting corner protector 44 to base 1. Of course, hook 43, corner protector 44, and base 1 can also be screwed together. First positioning hole 1372 can be positioned near the center of each side of base 1. One or more first positioning holes 1372 can be positioned on each side of base 1. When multiple first positioning holes 1372 are provided, they can be evenly distributed.

[0512] Referring to FIG138 , the optical assembly 2 is disposed in the accommodating space 12 and may include a light source assembly 20 and an optical component 21. The light source assembly 20 is disposed on the bottom surface 10 of the base 1, and the optical component 21 is disposed on a side of the light source assembly 20 away from the base 1, that is, the optical component 21 covers the light source assembly 20. The light source assembly 20 can generate and emit light, and the light from the light source assembly 20 can pass through the optical component 21. The optical component 21 can process the light generated by the light source assembly 20, which can be one of light projection, light reflection, light diffusion, light refraction, light diffraction, etc., or a combination of multiple thereof.

[0513] 111F and 138 , the light source assembly 20 includes a circuit board 202 and an LED array 203 disposed on the circuit board 202. The light source assembly 20 can be directly or indirectly disposed on the base 1 or the optical member 21, such as by gluing, welding, snapping, or screwing.

[0514] Referring to Figures 111F and 138, the number of circuit boards 202 can be one or more, and the length of each circuit board 202 can be the same or different, depending on actual needs. The circuit board 202 can be a plate material that can be used for circuit conduction and realize the function of a circuit board, such as an FPC, PCB, or aluminum substrate, but is not limited thereto. The circuit board 202 can be arranged along the length or width direction of the bottom surface 10, or can be arranged crosswise along the length and width directions of the bottom surface 10. The circuit board 202 can be arranged approximately parallel to the bottom surface 10, or can be arranged at an angle to the bottom surface 10. By adjusting the number and arrangement of the circuit boards 202, LED lighting fixtures 100 with different brightness and light output effects can be obtained. At least one LED array 203 is arranged on each circuit board 202. The LED array 203 can be arranged on any side of the circuit board 202 or on both sides of the circuit board 202. The LED array 203 can be an array of LED chips or an array composed of other light-emitting devices. Referring to FIG. 111F , the light-emitting devices of the LED array 203 can be arranged in a circular pattern. Each LED array 203 can have light-emitting devices arranged in one or more circular patterns. In this embodiment, the light-emitting devices of each LED array 203 are arranged in two circular patterns. This arrangement reduces the amount of light in the center of the LED array 203 and increases the amount of light around the LED array 203, thereby creating a batwing light pattern in the LED lighting fixture 100.

[0515] In particular, combining the diffuser 217 with the annularly arranged LED array 203 can further effectively diffuse the light to the surroundings, reduce the light in the middle, form a bat-wing light pattern, improve the light output effect of the LED lighting fixture 100, meet the lighting needs of specific occasions, and enhance the visual effect.

[0516] Referring to FIG. 111F , the circuit board 202 has a concave portion 2021 and a convex portion 2022 disposed opposite each other. The circuit board 202 may also be provided with one or more circuit board mounting holes 2023. For example, screws or other fasteners may be passed through the circuit board mounting holes 2023 to secure the circuit board 202 to the bottom surface 10. Alternatively, adhesive or heat dissipation adhesive may be applied to both the front and back surfaces of the circuit board 202 to secure the bottom surface 10, thereby enhancing the connection strength between the circuit board 202 and the bottom surface 10.

[0517] Refer to Figure 111D, which is a schematic diagram of cutting multiple circuit boards 202 in this application. The width of the concave portion 2021 of the circuit board 202 is roughly equal to the width of the convex portion 2022 of the circuit board 202. During cutting, the concave portion 2021 and the convex portion 2022 are staggered along the length direction of the circuit board 202, so that more individual circuit boards 202 can be cut out of the circuit board of the same area.

[0518] Referring to FIG. 138 , the optical component 21 may include an optical unit 211 and a diffuser 217, which is snap-fitted to the optical unit 211. Multiple diffusers 217 are provided, corresponding to the number of LED arrays 203, with one diffuser 217 corresponding to one LED array 203. Light emitted by each LED array 203 is diffused by the diffuser 217, allowing the light emitted by the LED array 203 to be emitted in a predetermined direction, i.e., with biased light diffusion, achieving different light emission effects. The light is then emitted through the optical unit 211. In this embodiment, the number of diffusers 217 and the number of LED arrays 203 are both sixteen, arranged in a 4x4 pattern. Each diffuser 217 is preferably independently provided. Compared to conventional diffusers, multiple independently provided diffusers 217 are more affordable, reducing production costs. Furthermore, it is easier to set or change the diffusion direction of the diffuser 217 and to replace the diffuser 217, thereby reducing maintenance costs for the LED lighting fixture 100.

[0519] The diffuser 217 can deflect light in a specific direction through a micro-optical array structure set on its surface, such as a micro-prism array or a protrusion array; or the diffuser 217 itself can guide light to diffuse in a specific direction by means of plate-like areas of different refractive indices arranged alternately and parallelly along any direction of the film surface, that is, the diffuser 217 has the function of diffusing light in a specific direction.

[0520] Referring to Figures 147 and 148 , the diffuser 217 comprises a flat portion 2171, which is generally parallel to a horizontal plane or XY plane, and a three-dimensional portion 2172. The three-dimensional portion 2172 is generally shaped like a prism, truncated cone, pyramid, or cone. In this embodiment, the three-dimensional portion 2172 is generally shaped like a quadrangular pyramid. The smaller end of the three-dimensional portion 2172 is positioned adjacent to the LED array 203, while the larger end of the three-dimensional portion 2172 faces the light output direction of the LED lighting fixture 100. The flat portion 2171 is positioned adjacent to the smaller end of the three-dimensional portion 2172 and is positioned near the center of the flat portion 2171. Specifically, the smaller end of the three-dimensional portion 2172 passes through the center of the flat portion 2171 and protrudes beyond it.

[0521] The light emitted by the light source assembly 20 can be projected, reflected, diffused, diffracted, refracted, etc., or a combination of multiple thereof through the flat portion 2171 and the three-dimensional portion 2172. Finally, part of the light is emitted through the flat portion 2171, and part of the light is emitted through the three-dimensional portion 2172, so that the light can be more effectively diffused to the surroundings, reducing the light in the middle, forming a bat-wing light pattern, improving the light output effect of the LED lighting fixture 100, meeting the lighting requirements of specific occasions, and enhancing the visual effect.

[0522] Referring to Figures 150 and 151 , the optical unit 211 includes multiple optical components 21. The number of optical components 21 corresponds to the number of diffusers 217, i.e., one optical component 21 is provided for each diffuser 217, and the diffuser 217 is disposed within the optical component 21. The optical component 21 can be an inverted pyramid structure, i.e., a reflective cup structure. In this embodiment, the pyramid structure is a quadrangular pyramid. In this embodiment, the number of diffusers 217 and the number of optical components 21 are both sixteen, arranged in a 4x4 pattern.

[0523] Referring to Figures 138 and 151 , the prism surface of the optical member 21 has a light exit hole 211243, i.e., a through hole extending through the prism surface of the optical member 21. In this embodiment, the optical member 21 includes an optical wall 21124 arranged end-to-end around the light exit hole 211243. The end of the optical member 21 with a smaller opening faces the bottom surface 10 and is provided with a support portion 21126. Specifically, the support portion 21126 is provided on the side of the optical member 21 closest to the bottom surface 10. The support portion 21126 extends in a direction closer to the bottom surface 10. One end of the support portion 21126 can abut the circuit board 202 and cover the periphery of the LED array 203. The support portion 21126 is preferably integrally formed with the optical member 21. Each optical member 21 preferably has four support portions 21126, which can be spaced apart or connected end-to-end. The diffuser 217 comprises a flat portion 2171, a three-dimensional portion 2172, and hooks 2173. The flat portion 2171 has a surface parallel to the bottom surface and side surfaces perpendicular to the bottom surface. The three-dimensional portion 2172 is disposed on the surface of the flat portion 2171 parallel to the bottom surface 10 and is integrally formed with the flat portion 2171. The flat portion 2171 is disposed on the bottom surface 10 via side surfaces perpendicular to the bottom surface (which may also be the reinforcing portion 21711) and covers the LED array. One or more hooks 2173 may be provided around the flat portion 2171 of the diffuser 217, and these hooks 2173 can be engaged with the support portion 21126.

[0524] As a preferred embodiment, referring to Figures 142, 143A, and 151, wherein Figure 142 is a schematic cross-sectional view taken along line DD of Figure 139, and Figure 143A is a partially enlarged view of point F' in Figure 142, a first engaging portion 211262 is provided at one end of the support portion 21126, which is close to the circuit board 202, and a hook 2173 is engaged with the first engaging portion 211262. In this embodiment, the first engaging portion 211262 is preferably provided between adjacent support portions 21126. Of course, the first engaging portion 211262 may also be provided at other locations on the support portion 21126. The number of first engaging portions 211262 is preferably four, and the number of hooks 2173 is preferably the same as the number of first engaging portions 211262, i.e., there are four hooks 2173, each of which is engaged with a first engaging portion 211262. The depth of the first locking portion 211262 is the same or approximately the same as the thickness of the hook 2173. When the hook 2173 is engaged with the first locking portion 211262, the hook 2173 and the side of the support portion 21126 facing the circuit board 202 can be in the same horizontal plane, that is, the hook 2173 and the support portion 21126 are simultaneously in contact with the circuit board 202, thereby making the positions of the diffuser 217 and the optical component 21 more stable and preventing the diffuser 217 and the optical component 21 from being offset.

[0525] Referring to Figures 143A, 151, and 147, the end of the three-dimensional portion 2172 proximal to the circuit board 202 is preferably flush with the end of the support portion 21126 proximal to the circuit board 202, i.e., the top of the hook 2173 is flush with the top of the support portion 21126. This allows the end of the three-dimensional portion 2172 proximal to the circuit board 202 to abut against the circuit board 202, i.e., the hook 2173 and the support portion 21126 simultaneously abut against the circuit board 202, further enhancing the positional stability of the diffuser 217 and the optical member 21. Furthermore, reinforcing portions 21711 may be provided around the flattened portion 2171. The reinforcing portions 21711 are disposed approximately perpendicular to the flattened portion 2171 and may extend toward the circuit board 202 or toward the light emission direction of the LED lighting fixture 100. The reinforcing portions 21711 enhance the structural strength of the flattened portion 2171.

[0526] The four support portions 21126 are connected end to end. The support portions 21126 and hooks 2173 are positioned around the perimeter of the LED array 203. The flat portion 2171 and the three-dimensional portion 2172 are positioned in front of the light emitting direction of the LED array 203. The four support portions 21126 are preferably made of an opaque material so that light emitted by the LED array 203 does not pass through the support portions 21126 and cause light loss. A portion of the light emitted by the LED array 203 can be projected, reflected, diffused, diffracted, refracted, or subjected to one or a combination of these processes by the support portions 21126. Finally, this portion of light is emitted through the diffuser 217. Part of the light emitted by the LED array 203 first passes through the flat portion 2171 and the three-dimensional portion 2172 located above the flat portion 2171 to undergo one of the following light projection, light reflection, light diffusion, light diffraction, light refraction, etc., or a combination of multiple thereof. Part of the light is emitted through the flat portion 2171 and the three-dimensional portion 2172 located above the flat portion 2171. Part of the light also passes through the three-dimensional portion 2172 located below the flat portion 2171 again to undergo one of the following light projection, light reflection, light diffusion, light diffraction, light refraction, etc., or a combination of multiple thereof. Finally, this part of the light is emitted through the three-dimensional portion 2172 located below the flat portion 2171. That is to say, the light emitted by the LED array 203 passes through the flat portion 2171, the three-dimensional portion 2172 located above the flat portion 2171, and the three-dimensional portion 2172 located below the flat portion 2171 for multiple times to undergo one of light projection, light reflection, light diffusion, light diffraction, light refraction, etc., or a combination of multiple thereof, so that the light emitted by the LED array 203 is more effectively diffused to the surroundings, reducing the light in the middle, avoiding light concentration, forming a bat-wing light pattern, improving the light output effect of the LED lighting fixture 100, meeting the lighting requirements of specific occasions, and enhancing the visual effect.

[0527] The diffuser 217 is arranged in the optical component 21. The light diffused by the diffuser 217 is diffused again by the optical component 21, further making the light emitted by the LED array 203 more effectively diffused to the surroundings, reducing the concentration in the middle, avoiding the concentration of light, forming a bat-wing light pattern, and further improving the light output effect of the LED lighting fixture 100.

[0528] More specifically, referring to FIG. 143B , which is a schematic diagram of the optical path in FIG. 143A , as shown in FIG. 143B , at least a portion of the light emitted from the LED array 203 is emitted directly from the lower portion of the three-dimensional portion 2172 (i.e., emitted from the LED lamp). Alternatively, at least a portion of the light emitted from the three-dimensional portion 2172 closer to the LED array 203, with the plane of the flat portion 2171 as the boundary, is emitted after deflecting at a certain angle. The light emitted from the LED array 203 at least partially passes through the flat portion 2171, then passes through the portion of the three-dimensional portion 2172 farther from the LED array 203, deflects at a certain angle, and then exits the LED lamp. After at least a portion of the light emitted from the LED array 203 passes through the flat portion 2171, at least a portion is reflected from the outer surface of the three-dimensional portion 2172 before being projected onto the optical wall 21124. After being reflected from the optical wall 21124, the light is emitted from the LED lamp.

[0529] In one embodiment, the distance between the optical wall 21124 and the three-dimensional portion 2172 gradually increases along the light emitting direction, and the light is reflected to the optical wall 21124 through the outer surface of the three-dimensional portion 2172, and its reflection angle changes with the distance between the optical wall 21124 and the three-dimensional portion 2172, thereby further enhancing the light diffusion effect.

[0530] Combined with Figure 152, Figure 152 is a partial exploded view of the LED lamp in this embodiment. As shown in the figure, the LED array 203 is distributed in a hollow ring shape, that is, no light-emitting device is set in the middle area. The light-emitting device is set around the three-dimensional part 2172 in the projection direction of the light emitting direction. The light is refracted multiple times by the three-dimensional part 2172 and the optical wall 21124 or diffused to the surroundings after reflection to form a bat-wing light pattern.

[0531] As a preferred embodiment, referring to Figures 142, 143A, and 150, a first connector 21121 is provided on the side of the optical unit 211 facing the bottom surface 10. Specifically, the first connector 21121 is provided on the end of the optical component 21 near the bottom surface 10. The first connector 21121 is provided on the side of the optical wall 21124 facing the base 1. Alternatively, the first connector 21121 is provided on the non-light-emitting surface of the optical component 21. The first connector 21121 can be a mounting post with a screw hole. The screws and the first connector 21121 can securely connect the optical component 21, the circuit board 202, and the bottom surface 10, while also clamping the diffuser 217. Specifically, the screws simultaneously secure the optical component 21, the circuit board 202, and the bottom surface 10, and the resulting clamping force secures the diffuser 217. Each optical component 21 can be provided with one or more first connectors 21121. Of course, some optical components 21 may not be provided with first connectors 21121, depending on actual needs.

[0532] 149A and 150 , the optical unit 211 is surrounded by a first wall 511. A second connecting member 5111 and a first positioning member 5112 are disposed on the first wall 511. Both the second connecting member 5111 and the first positioning member 5112 are disposed on the side of the first wall 511 facing the bottom surface 10. The first positioning member 5112 is positioned to correspond to the first positioning hole 1372 and can be snapped into the first positioning hole 1372. The first positioning member 5112 facilitates mounting the optical unit 211 on the base 1. Furthermore, the first positioning member 5112 and the first positioning hole 1372 provide a certain degree of retention, further stabilizing the connection between the optical unit 211 and the base 1.

[0533] Referring to Figures 140 and 141 , the second connecting member 5111 can be a mounting post with a screw hole. The position of the second connecting member 5111 corresponds to the assembly hole 1371 and the corner protector 44. The optical unit 211, the corner protector 44, and the bottom surface 10 can be fixedly connected by screws and the second connecting member 5111. In other words, the screws simultaneously secure the optical unit 211, the corner protector 44, and the bottom surface 10. Preferably, the hook 43 can also be locked simultaneously, that is, the screws can simultaneously secure the optical unit 211, the hook 43, the corner protector 44, and the bottom surface 10.

[0534] As a preferred method, referring to Figures 140 and 141, a third connecting member 411 is provided on the corner guard 44, and the first positioning member 5112 can be a mounting column with a screw hole. The position of the third connecting member 411 corresponds to the assembly hole 1371 and the first positioning member 5112, and the aperture of the third connecting member 411 is greater than or equal to the outer diameter of the first positioning member 5112, so that the first positioning member 5112 can be inserted into the third connecting member 411, so that the connection between the first positioning member 5112 and the third connecting member 411 is more stable, and at the same time it is convenient for the installation of the first positioning member 5112 and the third connecting member 411.

[0535] 140 and 141 , the first wall 511 is disposed on the side of the first horizontal mounting portion 1381 facing away from the bottom surface 10 , and the thickness of the first wall 511 is equal to or approximately equal to the height difference between the first horizontal mounting portion 1381 and the second horizontal mounting portion 1382 . Thus, viewed from the light-emitting side of the LED lighting fixture 100 , the surface of the first wall 511 is flush or approximately flush with the surfaces of the four mounting portions, thereby improving the overall aesthetics of the LED lighting fixture 100 .

[0536] Referring to Figures 138, 139, and 144, Figure 144 being a schematic cross-sectional view taken along line EE of Figure 139, the LED lighting fixture 100 further includes a power supply 3 and a power cord box 6. The power supply 3 is mounted within the power cord box 6, which can be mounted on the side of the optical unit 211 facing the bottom surface 10. That is, the power cord box 6 is mounted in the gap between adjacent optical components 21, that is, the power cord box 6 is mounted between the optical unit 211 and the base 1. A second positioning member 61 and a third positioning member 62 are provided on the power cord box 6. A first positioning hole 104 and a second positioning hole 105 are provided on the bottom surface 10. The second positioning member 61 can be snapped into the first positioning hole 104, and the third positioning member 62 can be snapped into the second positioning hole 105.

[0537] Referring to Figures 138 and 144 , the LED lighting fixture 100 also includes a wiring cover 9, which is disposed on the bottom surface 10. External wires can be electrically connected to the power source 3 through the wiring cover 9, thereby providing power to the LED lighting fixture 100. Referring to Figures 145 , 146 , and 148 , the wiring cover 9 is provided with a second engaging portion 801 and a third engaging portion 802 at each end, respectively. The bottom surface 10 is provided with a fourth engaging portion 106. The second engaging portion 801 engages with the bottom surface 10, and the third engaging portion 802 engages with the fourth engaging portion 106, forming a mutually locked state. The second engaging portion 801, the third engaging portion 802, and the fourth engaging portion 106 are preferably all elastic, thereby enhancing the engagement between the second engaging portion 801, the third engaging portion 802, and the fourth engaging portion 106.

[0538] Referring to Figure 138, the LED lighting fixture 100 also includes a connecting plate 8, which is, for example, an FPC connecting plate. The connecting plate 8 is used to electrically connect multiple circuit boards 202. The connecting plate 8 is electrically connected to the power supply 3. This can reduce the connecting wires between the circuit boards 202 and the power supply 3, and also facilitate the installation and disassembly between the connecting plate 8 and the power supply 3.

[0539] It should be understood that the above description is for illustration and not for limitation. The embodiments described above may also be used in any combination. Many embodiments and many applications beyond the examples provided will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of the present teachings should not be determined with reference to the above description, but rather with reference to the appended claims and the full scope of equivalents to which such claims are entitled. For the purpose of comprehensiveness, all articles and references, including disclosures of patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the foregoing claims is not intended to be a disclaimer of such subject matter, nor should it be considered that the inventors did not consider such subject matter to be part of the disclosed inventive subject matter.

Claims

1. An LED lighting device, characterized in that: include: A base, the base comprising a bottom surface and side walls, the side walls are arranged around the bottom surface and form an accommodating space with the bottom surface, and the bottom surface comprises an integrally formed bottom surface groove; an optical assembly, wherein at least a portion of the optical assembly is disposed in the accommodation space, the optical assembly comprises a light source assembly and an optical member, the light source assembly comprises a circuit board, an LED array and an electrical connection unit, the circuit board is disposed on the bottom surface of the base, the LED array is disposed on the circuit board, the circuit boards are electrically connected through the electrical connection unit, and at least a portion of the circuit board is accommodated in the bottom surface groove, the optical member comprises a plurality of optical units, the optical unit comprises a first optical member and a second optical member surrounding the outer periphery of the first optical member, the optical member covers the LED array and is located in the light emitting direction of the LED array; A mounting frame, wherein the mounting frame comprises a plurality of supporting members, the optical component is clamped by the base and the mounting frame, and the mounting frame and the side wall form a redundant space outside the accommodating space; and A power supply is arranged in the redundant space, and the installation frame covers the power supply.

2. The LED lighting device according to claim 1, characterized in that: It also includes a hanging support, which is arranged on the base and includes a plurality of hooks.

3. The LED lighting device according to claim 2, characterized in that: The first optical member covers the LED array, and at least a portion of light generated by the LED array is emitted from the first optical member.

4. The LED lighting device according to claim 3, characterized in that: The second optical member includes a plurality of optical walls disposed around the first optical member, and the optical walls reflect at least a portion of light emitted from the first optical member.

5. The LED lighting device according to claim 1, characterized in that: The side wall comprises a mounting end wall which is away from the bottom surface and parallel to the bottom surface, and the mounting end wall is formed by extending the side wall.

6. The LED lighting device according to claim 5, characterized in that: The mounting end wall comprises a bearing portion and a limiting portion, the bearing portion and the limiting portion are integrally formed, and the limiting portion is an arc-shaped protrusion.

7. The LED lighting device according to claim 6, characterized in that: The supporting member includes a first wall, and the first wall and the limiting portion clamp the optical component.

8. The LED lighting device according to claim 7, characterized in that: The first wall is provided with a first step structure and a second step structure, the first step structure abuts against the supporting portion, and the second step structure surrounds the outer side of the supporting portion.

9. The LED lighting device according to claim 1, characterized in that: The LED array includes a plurality of LED lamp beads, the circuit board includes a convex portion and a concave portion, and the LED lamp beads are arranged on the convex portion.

10. An LED lighting device, characterized in that: include: A base, the base comprising a bottom surface and side walls, the side walls are arranged around the bottom surface and form an accommodating space with the bottom surface, and the bottom surface comprises an integrally formed bottom surface groove; an optical component, at least a portion of which is disposed in the accommodating space; The optical component includes a light source component, an optical member and an optical bearing part. The light source component includes a circuit board, an LED array and an electrical connection unit. The circuit board is arranged on the bottom surface of the base, and the LED array is arranged on the circuit board. The circuit boards are electrically connected through the electrical connection unit, and at least part of the circuit board is accommodated in the bottom surface groove. The optical bearing part is arranged on the bottom surface of the base, and the optical member is arranged on the optical bearing part. The optical bearing part includes a plurality of window structures corresponding to the LED array, and the light emitted by the LED array passes through the window structure to reach the optical member.

11. The LED lighting device according to claim 10, characterized in that: The optical bearing part includes a first prism structure and a second prism structure spaced apart from each other, the first prism structure includes a prism surface provided with a window, the second prism surface is pressed against the circuit board, and the window exposes the LED array.

12. The LED lighting device according to claim 10, characterized in that: The optical component includes a plurality of optical units arranged in an array, and the optical unit includes a first optical component and a second optical component disposed around the first optical component.

13. The LED lighting device according to claim 10, characterized in that: The LED array includes a plurality of LED lamp beads, the circuit board includes a convex portion and a concave portion, and the LED lamp beads are arranged on the convex portion.

14. An LED lighting device, characterized in that: include: A base, the base comprising a bottom surface and side walls, the side walls are arranged around the bottom surface and form an accommodating space with the bottom surface, and the bottom surface comprises an integrally formed bottom surface groove; as well as an optical assembly, wherein at least a portion of the optical assembly is disposed in the accommodation space, the optical assembly comprises a light source assembly and an optical member, the light source assembly comprises a circuit board, an LED array and an electrical connection unit, the circuit board is disposed on the bottom surface of the base, the LED array is disposed on the circuit board, the circuit boards are electrically connected through the electrical connection unit, and at least a portion of the circuit board is accommodated in the bottom surface groove; The optical member includes a plurality of optical units, the optical unit including a first optical member and a second optical member surrounding the periphery of the first optical member; The optical component covers the LED array and is located in the light emitting direction of the LED array. The optical component further comprises a directional diffusion film, a light guide plate and a reflective paper, and a first clamping portion is provided at one end of the optical component close to the light source assembly, and the directional diffusion film, the light guide plate and the reflective paper are connected to the optical component through the first clamping portion; The light source components are arranged on both sides of the light guide plate.

15. The LED lighting device according to claim 14, characterized in that: It also includes a mounting frame and a power supply, wherein the mounting frame includes a plurality of supporting members, and the optical component is clamped by the base and the mounting frame; The installation frame and the side wall form a redundant space outside the accommodating space; The power supply is arranged in the redundant space, and the installation frame covers the power supply.

16. The LED lighting device according to claim 15, characterized in that: The second optical component includes a plurality of optical walls, each of which includes a light exit hole, and the LED array is exposed through the light exit hole.

17. The LED lighting device according to claim 16, characterized in that: A supporting portion is disposed at one end of the optical component close to the light source assembly. The supporting portion contacts the bottom surface and keeps a distance between the optical component and the bottom surface.

18. The LED lighting device according to claim 17, characterized in that: It also includes a hanging support member, which is fixed to the base and includes a plurality of hooks.

19. The LED lighting device according to claim 19, characterized in that: The side wall comprises a mounting end wall which is away from the bottom surface and parallel to the bottom surface, and the mounting end wall is formed by extending the side wall.

20. The LED lighting device according to claim 19, characterized in that: The mounting end wall comprises a bearing portion and a limiting portion, the bearing portion and the limiting portion are integrally formed, and the limiting portion is an arc-shaped protrusion.

21. An LED lighting device, characterized in that: include: A base, the base comprising a bottom surface and side walls, the side walls are arranged around the bottom surface and form an accommodating space with the bottom surface, and the bottom surface comprises an integrally formed bottom surface groove; an optical component, at least a portion of which is disposed in the accommodating space; The optical assembly includes a light source assembly and an optical component, the light source assembly includes a circuit board, an LED array and an electrical connection unit, the circuit board is arranged on the bottom surface of the base, the LED array is arranged on the circuit board, the circuit boards are electrically connected through the electrical connection unit, and at least part of the circuit board is accommodated in the bottom surface groove; The optical member includes a plurality of optical units and a diffuser, wherein the optical unit includes a first optical member and a second optical member surrounding an outer periphery of the first optical member; The diffusion element is snap-connected to the optical unit; The optical component covers the LED array and is located in the light emitting direction of the LED array.

22. The LED lighting device according to claim 21, characterized in that: The diffuser includes a flat portion, a three-dimensional portion and a hook, the flat portion has a surface parallel to the bottom surface, the flat portion is fixed to the bottom surface, the three-dimensional portion is arranged on the surface of the flat portion parallel to the bottom surface, and the hook can be arranged around the flat portion.

23. The LED lighting device according to claim 22, characterized in that: It also includes a mounting frame and a power supply, wherein the mounting frame includes a plurality of supporting members, and the optical component is clamped by the base and the mounting frame; The installation frame and the side wall form a redundant space outside the accommodating space; The power supply is arranged in the redundant space, and The mounting frame covers the power supply.

24. The LED lighting device according to claim 23, characterized in that: The second optical component includes a plurality of optical walls, each of which includes a light exit hole, and the LED array is exposed through the light exit hole.

25. The LED lighting device according to claim 24, characterized in that: A supporting portion is disposed at one end of the optical component close to the light source assembly. The supporting portion contacts the bottom surface and keeps a distance between the optical component and the bottom surface.

26. The LED lighting device according to claim 25, characterized in that: It also includes a hanging support member, which is fixed to the base and includes a plurality of hooks.

27. The LED lighting device according to claim 26, characterized in that: The side wall comprises a mounting end wall which is away from the bottom surface and parallel to the bottom surface, and the mounting end wall is formed by extending the side wall.

28. The LED lighting device according to claim 27, characterized in that: The mounting end wall comprises a bearing portion and a limiting portion, the bearing portion and the limiting portion are integrally formed, and the limiting portion is an arc-shaped protrusion.

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