LED lighting equipment

Abstract

The utility model provides an LED lighting device, comprising: a base having a bottom plate, a side wall and an end wall, a cavity being formed between the bottom plate and the side wall; the end wall and the bottom plate are parallel and have height difference; the end wall and the side wall form an accommodating space; the whole optical component covers the base; the light source is arranged in the concave cavity of the base and comprises a plurality of LED arrays which comprise LED lamp beads; the power supply is electrically connected with the light source, and at least part of the power supply is accommodated in the accommodating space; the optical component comprises an optical unit which comprises a plurality of first optical components and a plurality of second optical components, the LED array corresponds to the first optical components, each second optical component comprises one or more groups of optical walls, and the optical walls are arranged around the first optical components; on the cross section in the width direction of the first optical component, the optical wall, corresponding to the LED lamp bead, of the second optical component is provided with a lower end point, the connecting lines of the center of the LED light-emitting face and the lower end point are L3 and L4, and the value of the included angle F between the L3 and the L4 is larger than 0.8 times of the beam angle A of the LED lamp bead.

Description

[0001] This invention application is a divisional application with a filing date of December 31, 2021, application number 202190000185.X, and invention name “A LED lighting device” Technical Field

[0002] The present invention belongs to the technical field of LED lighting devices, and in particular relates to an LED lighting device. Background Art

[0003] LED lighting is widely used because of its advantages of energy saving and long life. LED lamps in the prior art commonly include flat panel lamps and grille lamps.

[0004] Flat panel lights in the prior art usually include a light bar, a bottom frame, a light guide plate and a diffuser plate. The light bar is arranged on the side of the bottom frame to provide lateral light output. The light emitted by the light bar passes through the light guide plate and then is emitted from the diffuser plate. Flat panel lights in the prior art have the following disadvantages: the light emitted by the light bar has a large light loss after passing through the light guide plate and the diffuser plate, resulting in a low light output efficiency of the flat panel lights; the light guide plate has a high cost, which is not conducive to the cost control of the flat panel lights; and the glare control of the flat panel lights is relatively general.

[0005] The grille lamp in the prior art includes a bottom frame, a light source (the light source can be a light bar, a fluorescent tube or an LED tube) and a grille. The light source is fixed on the bottom frame, and a grille is arranged on the light emitting side of the light source. The grille lamp in the prior art has the following disadvantages: the way of setting the grille is not conducive to the height control of the grille lamp, which increases the packaging and transportation cost; the cost of the grille is high, which is not conducive to the cost control of the whole lamp; when the grille is set, the light loss is large, and a dark area is easily formed at the grille, which is not conducive to light emission.

[0006] In summary, in view of the deficiencies and defects of LED lighting devices in the prior art, how to design LED lighting devices to solve the glare problem is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the invention

[0007] Many embodiments of the present invention are briefly described herein. However, the term invention is only used to describe certain embodiments disclosed in this specification (whether or not in the claims), rather than a complete description of all possible embodiments. Certain embodiments described above as various features or aspects of the present invention can be combined in different ways to form an LED lighting device or a portion thereof.

[0008] The embodiments of the present invention provide a new LED lighting device and features in various aspects to solve the above problems.

[0009] An embodiment of the present invention provides an LED lighting device, characterized by comprising:

[0010] The base has a bottom plate, a side wall and an end wall, wherein a concave cavity is formed between the bottom plate and the side wall; the end wall is parallel to the bottom plate and has a height difference; the end wall and the side wall form a receiving space;

[0011] An optical component, which is entirely covered on one side of the base in the light emitting direction of the LED lighting device; and

[0012] A light source is disposed in the concave cavity of the base, wherein the light source comprises a plurality of LED arrays, and the LED arrays comprise LED lamp beads;

[0013] A power source, the power source is electrically connected to the light source, and the power source is at least partially accommodated in the accommodation space;

[0014] The optical component comprises an optical unit, wherein the optical unit comprises a plurality of first optical components and a plurality of second optical components corresponding to the first optical components, the LED array corresponds to the first optical components, and the second optical component comprises one or more sets of optical walls, and the optical walls are arranged around the first optical components;

[0015] In the cross section of the first optical component in the width direction, the two groups of optical walls of the second optical component corresponding to the LED lamp bead have lower end points, and the lines connecting the center of the light-emitting surface of the LED and the lower end points of the two groups of optical walls are L3 and L4 respectively, and the value of the angle F between L3 and L4 is greater than 0.8 times the beam angle A of the LED lamp bead.

[0016] In one embodiment of the present invention, the second optical component includes one or more groups of optical walls, which are arranged around the first optical component, and the optical walls between adjacent second optical components are connected by a first connecting wall; a first cavity is formed in the first optical component, and a second cavity is formed between adjacent second optical components. The first optical component is connected to the optical walls of the second optical component in its length direction, and the first cavity and the second cavity are connected.

[0017] When the LED lamp bead in one embodiment of the present invention emits light, at least part of the light is reflected by the base and the first optical component, enters the second cavity and passes through the corresponding optical wall / connecting wall.

[0018] In one embodiment of the present invention, at least a portion of the light transmitted through the second optical member is emitted from the first connecting wall.

[0019] In one embodiment of the present invention, the optical unit further comprises a second connecting wall, a surface of the second connecting wall is flush with the end wall, and at least a portion of the light transmitted through the second optical component is emitted from the second connecting wall.

[0020] In one embodiment of the present invention, the light source also includes a circuit board. The light source includes a circuit board, and the circuit boards are provided in multiple groups. One or more groups of LED arrays are provided on each group of the circuit boards. The LED lamp beads on different circuit boards are electrically connected through an electrical connection unit. The light source is fixed to the bottom plate of the base through the circuit board.

[0021] In one embodiment of the present invention, a positioning unit is disposed on the base, and the positioning unit includes a strip-shaped groove disposed on the bottom plate, and the circuit board is at least partially or completely accommodated in the groove.

[0022] In an embodiment of the present invention, the electrical connection unit is electrically connected to the circuit board, and the electrical connection unit is attached to the bottom plate and presses the circuit board.

[0023] In one embodiment of the present invention, the first optical component has a light emitting surface, the LED lamp beads of the LED array are arranged along a first direction, and the light emitting surface is extended along the first direction.

[0024] In one embodiment of the present invention, the optical component further comprises a mounting unit, wherein the mounting unit comprises a wall portion arranged around the side wall, wherein the wall portion comprises a bending portion, and the bending portion and the optical component itself clamp the side wall.

[0025] In an embodiment of the present invention, the light emitting surface has a main body extending along the first direction and end portions located at two ends of the main body in the first direction, wherein the cross-section of the main body is an arc.

[0026] In one embodiment of the present invention, the end portion is configured as an arc surface or a spherical surface.

[0027] In one embodiment of the present invention, the first optical component completely covers the LED lamp bead.

[0028] In one embodiment of the present invention, the bending portion is formed by deforming a wall portion of the optical component.

[0029] An embodiment of the present invention provides an LED lighting device, characterized by comprising:

[0030] The base has a bottom plate, a side wall and an end wall, wherein a concave cavity is formed between the bottom plate and the side wall; the end wall is parallel to the bottom plate and has a height difference; the end wall and the side wall form a receiving space;

[0031] An optical component, which is entirely covered on one side of the base in the light emitting direction of the LED lighting device; and

[0032] A light source is disposed in the concave cavity of the base, wherein the light source comprises a plurality of LED arrays, and the LED arrays comprise LED lamp beads;

[0033] A power source, the power source is electrically connected to the light source, and the power source is at least partially accommodated in the accommodation space;

[0034] The optical component comprises an optical unit, wherein the optical unit comprises a plurality of first optical components and a plurality of second optical components corresponding to the first optical components, the LED array corresponds to the first optical components, and the second optical component comprises one or more sets of optical walls, and the optical walls are arranged around the first optical components;

[0035] On the cross section of the first optical component in the length direction, the two groups of optical walls of the second optical component corresponding to the LED lamp bead have lower end points, and the lines connecting the center of the light-emitting surface of the LED and the lower end points of the two groups of optical walls are L5 and L6 respectively, and the angle G between L5 and L6 is greater than 0.8 times the beam angle A of the LED lamp bead.

[0036] In one embodiment of the present invention, the second optical component includes one or more groups of optical walls, which are arranged around the first optical component, and the optical walls between adjacent second optical components are connected by a first connecting wall; a first cavity is formed in the first optical component, and a second cavity is formed between adjacent second optical components. The first optical component is connected to the optical walls of the second optical component in its length direction, and the first cavity and the second cavity are connected.

[0037] When the LED lamp bead in one embodiment of the present invention emits light, at least part of the light is reflected by the base and the first optical component, enters the second cavity and passes through the corresponding optical wall / connecting wall.

[0038] In one embodiment of the present invention, at least a portion of the light transmitted through the second optical member is emitted from the first connecting wall.

[0039] In one embodiment of the present invention, the optical unit further comprises a second connecting wall, a surface of the second connecting wall is flush with the end wall, and at least a portion of the light transmitted through the second optical component is emitted from the second connecting wall.

[0040] In one embodiment of the present invention, the light source also includes a circuit board. The light source includes a circuit board, and the circuit boards are provided in multiple groups. One or more groups of LED arrays are provided on each group of the circuit boards. The LED lamp beads on different circuit boards are electrically connected through an electrical connection unit. The light source is fixed to the bottom plate of the base through the circuit board.

[0041] In one embodiment of the present invention, a positioning unit is disposed on the base, and the positioning unit includes a strip-shaped groove disposed on the bottom plate, and the circuit board is at least partially or completely accommodated in the groove.

[0042] In an embodiment of the present invention, the electrical connection unit is electrically connected to the circuit board, and the electrical connection unit is attached to the bottom plate and presses the circuit board.

[0043] In one embodiment of the present invention, the first optical component has a light emitting surface, the LED lamp beads of the LED array are arranged along a first direction, and the light emitting surface is extended along the first direction.

[0044] In one embodiment of the present invention, the optical component further comprises a mounting unit, wherein the mounting unit comprises a wall portion arranged around the side wall, wherein the wall portion comprises a bending portion, and the bending portion and the optical component itself clamp the side wall.

[0045] In an embodiment of the present invention, the light emitting surface has a main body extending along the first direction and end portions located at two ends of the main body in the first direction, wherein the cross-section of the main body is an arc.

[0046] In one embodiment of the present invention, the end portion is configured as an arc-shaped surface.

[0047] In one embodiment of the present invention, the first optical component completely covers the LED lamp bead.

[0048] In one embodiment of the present invention, the bending portion is formed by deforming a wall portion of the optical component.

[0049] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects: the first optical component is configured to have a light diffusion function to increase the light output angle of the light source while avoiding light concentration and causing visual discomfort; at least a portion of the light transmitted through the second optical component can be emitted from the adjacent second optical component, or at least a portion of the light transmitted through the second optical component can be emitted from the second optical component after reflection to avoid forming a dark area at the second optical component, thereby improving the aesthetics of the LED lighting device when it is lit; the angle between the line connecting the midpoint and the distal end and the lower end surface of the LED lighting device is between 10 degrees and 45 degrees, thereby shielding a portion of the light transmitted from the second optical component. The first optical component directly emits light to reduce glare; at least a portion of the light transmitted through the second optical component is emitted from the first connecting wall, which can avoid the formation of a dark area at the first connecting wall. The thickness of the first connecting wall is greater than the thickness of the optical wall to provide better connection strength, and the thinner setting of the optical wall results in less light loss at the optical wall; at least a portion of the light transmitted through the second optical component is emitted from the second connecting wall, which can avoid the formation of a dark area at the second connecting wall; the power supply is arranged inside the LED lighting device, and compared with arranging the power supply outside the base, the power supply will not occupy additional height space of the LED lighting device, thereby reducing the height of the LED lighting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is a schematic front view of an LED lighting device according to an embodiment of the present invention;

[0051] Figure 2 yes Figure 1 The enlarged view of A in FIG.

[0052] Figure 3 is a cross-sectional schematic diagram of an LED lighting device according to an embodiment of the present invention;

[0053] Figure 4 yes Figure 3 The enlarged view of point B in the middle;

[0054] Figure 5 is a three-dimensional schematic diagram of an LED lighting device according to an embodiment of the present invention;

[0055] Figure 6 yes Figure 1 Schematic diagram without optical components;

[0056] Figure 7 yes Figure 6 Enlarged view of point C in the middle;

[0057] Figure 8 is a three-dimensional schematic diagram of an optical component;

[0058] Fig. 9 It is a three-dimensional schematic diagram of the base;

[0059] Fig.10 The three-dimensional structure of the LED lighting device in one embodiment is shown in FIG. Figure 1 ;

[0060] Fig.11 The three-dimensional structure of the LED lighting device in one embodiment is shown in FIG. Figure 2 ;

[0061] Fig.12 is a schematic cross-sectional structural diagram of an LED lighting device in an embodiment;

[0062] Fig.13 yes Fig.12 The enlarged view of D in FIG.

[0063] Fig.14 yes Fig.12 The enlarged view of point E in FIG.

[0064] Fig.15 A schematic diagram of a three-dimensional structure of an LED lighting device in an embodiment without optical components;

[0065] Fig.16 is a schematic diagram of a three-dimensional structure of an optical component in an embodiment;

[0066] Fig.17is a schematic cross-sectional structural diagram of an LED lighting device in an embodiment;

[0067] Fig.18 yes Fig.17 The enlarged view of F in FIG.

[0068] Fig.19 This is a schematic diagram of the light output of LED lamp beads;

[0069] Fig. 20 It is a schematic diagram of the light output of the LED array;

[0070] Fig.21 is a schematic diagram of the three-dimensional structure of an LED lighting device in an embodiment;

[0071] Fig. 22 is a schematic cross-sectional structural diagram of an LED lighting device in an embodiment;

[0072] Fig.23 yes Fig. 22 The enlarged view of G in FIG.

[0073] Fig.24 is a partial cross-sectional schematic diagram of the installation structure;

[0074] Fig.25 yes Fig. 22 The enlarged view of the H in the middle;

[0075] Fig.26 The rear view structure of the LED lighting device in some embodiments is shown in FIG. Figure 1 ;

[0076] Fig. 27 The rear view structure of the LED lighting device in some embodiments is shown in FIG. Figure 2 ;

[0077] Fig.28 The rear view structure of the LED lighting device in some embodiments is shown in FIG. Figure 3 ;

[0078] Fig.29 is a schematic diagram of the three-dimensional structure of an LED lighting device in an embodiment;

[0079] Fig.30 yes Fig.29 An enlarged schematic diagram of position I in FIG.

[0080] Fig.31 is a schematic cross-sectional structural diagram of an LED lighting device in an embodiment;

[0081] Fig.32 yes Fig.31 The enlarged schematic diagram of J in the middle;

[0082] Fig.33 is a schematic diagram of the three-dimensional structure of an LED lighting device in an embodiment;

[0083] Fig.34 is a schematic diagram of the main structure of an LED lighting device in an embodiment;

[0084] Fig.35 is a cross-sectional view of an LED lighting device in an embodiment Figure 1 ;

[0085] Fig.36 yes Fig.35 Enlarged view of K in the middle;

[0086] Fig.37 is a cross-sectional view of an LED lighting device in an embodiment Figure 2 , which displays Fig.35 Sections in different directions;

[0087] Fig.38 yes Fig.37 The enlarged view of L in FIG.

[0088] Fig.39 It is a partial cross-sectional structural schematic diagram of an LED lighting device in an embodiment in which the LED lighting device is installed horizontally and emits light downward;

[0089] Fig.40 It is a partial cross-sectional structural schematic diagram of an LED lighting device in an embodiment in which the LED lighting device is installed horizontally and emits light downward;

[0090] Fig.41 It is a partial cross-sectional structural schematic diagram of an LED lighting device in an embodiment in which the LED lighting device is installed horizontally and emits light downward;

[0091] Fig.42 It is a partial cross-sectional structural schematic diagram of an LED lighting device in an embodiment in which the LED lighting device is installed horizontally and emits light downward; DETAILED DESCRIPTION

[0092] Embodiments of the present invention will now be described more completely below with reference to the accompanying drawings, in which embodiments of the present invention are shown. However, the present invention can 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. The same reference numerals indicate the same elements in the drawings.

[0093] 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.

[0094] 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 also be present. Conversely, when an element is referred to as being "directly on" or "extending directly onto" another element, there are no intervening elements. 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. Conversely, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements.

[0095] 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 illustrated in the figure. It will be understood that these terms are intended to cover different device orientations other than the orientation depicted in the figure. In the present invention, the "vertical", "horizontal" and "parallel" are defined as: including ±10% based on the standard definition. For example, vertical generally refers to an angle of 90 degrees relative to a reference line, but in the present invention, vertical refers to a situation within 80 to 100 degrees.

[0096] The terms used herein are for the purpose of describing specific 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", "include" and / or "comprising" specify the presence of stated features, integers, steps, operations, elements, and / or parts, but do not exclude the presence or increase of one or more other features, integers, steps, operations, elements, parts, and / or combinations thereof.

[0097] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the invention belongs. It will also be understood that the terms used herein should be interpreted as having a meaning consistent with their meanings 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 in this article.

[0098] Unless otherwise expressly stated, comparative quantitative terms such as "less than" and "greater than" are intended to encompass the concept of equality. As an example, "less than" may not only mean "less than" in the strictest mathematical sense, but may also mean "less than or equal to".

[0099] like Figures 1 to 6 As shown, an LED lighting device is provided in an embodiment of the present invention, and the LED lighting device includes: a base 1, a light source 2, an optical component 3 and a power source 4. The light source 2 is electrically connected to the power source 4, the light source 2 is arranged on the base 1, and the optical component 3 is arranged in the light emitting direction of the light source 2.

[0100] See also Fig. 9 The base 1 in this embodiment has a bottom plate 11 and a side wall 12, and the side wall 12 is arranged at the outer edge of the bottom plate 11 to form a concave cavity 101 between the side wall 12 and the bottom plate 11. The light source 2 is arranged in the concave cavity 101. 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 12 is directly bent relative to the bottom plate 11. 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.

[0101] See also Figure 6 and Figure 7 In this embodiment, the light source 2 can be directly fixed to the bottom plate 11 of the base 1. Specifically, the light source 2 includes an LED lamp bead 21 and a circuit board 22, wherein the LED lamp bead 21 is fixed on the circuit board 22, and the light source 2 is directly fixed to the bottom plate 11 of the base 1 through the circuit board 22. In some embodiments, the circuit board 22 is directly fixed to the bottom plate 11 of the base 1 by bonding. In some embodiments, the light source 2 can be clamped on the bottom plate 11 of the base 1 through the circuit board 22. In some embodiments, the light source 2 can be directly fixed to the bottom plate 11 of the base 2 by welding. In the above embodiments, the light source 2 forms a heat conduction path with the bottom plate of the base 1, so that the heat generated by the LED lamp bead 21 during operation can be quickly conducted to the base 1 and dissipated through the base 1 to improve the heat dissipation efficiency. See Figure 6 In some embodiments, the LED lamp beads 21 on the circuit board 22 are arranged in two rows. Fig.13 and Fig.15 In some embodiments, the LED lamp beads 21 on the circuit board 22 are arranged in one row.

[0102] See also Fig.12 , Fig.13 and Fig.15 In one embodiment, a positioning unit 102 may be provided on the base 1 for positioning the light source 2. The positioning unit 102 includes a strip-shaped groove provided on the bottom plate 11, and the circuit board 22 of the light source 2 is at least partially or completely accommodated in the groove, so that the position of the circuit board 22 is relatively fixedly configured as the bottom plate 11. In addition, the groove is formed by stamping on the bottom plate 11, which is equivalent to providing a reinforcing rib on the bottom plate 11, which can increase the structural strength of the bottom plate 11 against bending. In this embodiment, the thickness dimension of the circuit board 22 is roughly the same as the depth dimension of the groove. The electrical connection unit 24 can be attached to the bottom plate 11 and electrically connected to the circuit board 22 located in the groove. The electrical connection unit 24 is attached to the bottom plate 11, and can press the circuit board 22 to limit the loosening of the circuit board 22. In addition, the electrical connection unit 24 can be fixed to the bottom plate 11, for example, by glue or screws, so as to increase its stability and prevent the electrical connection between the electrical connection unit 24 and the circuit board 22 from being disconnected and failing due to the loosening of the electrical connection unit 24.

[0103] See also Figures 1 to 3 In this embodiment, the optical component 3 includes an optical unit 31 and a mounting unit 32, and the mounting unit 32 corresponds to the base 1. Specifically, the mounting unit 32 is connected to the side wall 12 of the base 1. The mounting unit 32 can be arranged on the inner side or the outer side of the side wall 12. In this embodiment, the mounting unit 32 is arranged on the outer side of the side wall 12 so that the optical component 3 is entirely covered on one 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 31 is provided.

[0104] See also Fig.10 and Fig.16 In one embodiment, the mounting unit 32 includes a hole 302 disposed on the optical member 3. Accordingly, a hole corresponding to the hole 302 is also disposed on the base 1, so that the optical member 3 and the base 1 can be fixed by passing a rivet through the corresponding holes of the optical member 3 and the base 1.

[0105] See also Figure 21 to Figure 24In one embodiment, the mounting unit 32 is disposed at the outer edge of the optical component 3 and includes a wall portion 321, which is disposed around the side wall 12 of the base 1 and disposed on the outer side of the side wall 12. A bending portion 3211 is disposed on the wall portion 321, and the bending portion 3211 covers or abuts against the end of the side wall 12 in the thickness direction of the LED lighting device, so that the side wall 12 can be clamped by the bending portion 3211 and the optical component 3 itself, so that the optical component 3 is fixed to the base 1. In addition, through this fixing method, it is not necessary to set fasteners (such as bolts, rivets, etc.) to fix the optical component 3 to the base 1, which can prevent the fasteners from being set on the light-emitting surface of the optical component 3 to affect the light emission of the optical component 3 (for example, the light-emitting surface of the optical component 3 is caused by the local dark spots caused by the fasteners), and the integrity and aesthetics of the appearance of the optical component 1 can be guaranteed.

[0106] The optical component 3 is formed of plastic material. When the optical component 3 is sleeved outside the base 1, the wall portion 321 of the optical component 3 can be deformed by heat pressing to form a bent portion 3211.

[0107] In other embodiments, when the optical component 3 is sleeved outside the base 1 , the wall portion 321 and the side wall 12 of the base 1 may also be fixed by buckles, fasteners, etc.

[0108] The above-mentioned method of disposing the wall portion 321 of the optical component 3 outside the side wall 12 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.

[0109] See also Figures 1 to 4 The optical unit 31 in this embodiment includes a plurality of first optical components 311 (translucent components), and the light generated by the light source 2 when working can pass through the first optical components 311. The light source 2 includes a plurality of LED arrays 23, and the LED arrays 23 include at least one LED lamp bead 21. In this embodiment, each LED array 23 includes a plurality of LED lamp beads 21. The LED array 23 corresponds to the first optical component 311, that is, the LED array 23 is configured in a one-to-one correspondence with the first optical component 311, and the same number of the two are provided. In other embodiments, it can also be set that the number of the first optical components 311 is greater than the number of the LED arrays 23.

[0110] In this embodiment, the LED lamp beads 21 in the LED array 23 only correspond to the first optical component 311, that is, the lamp beads 21 in the LED array 23 are completely covered by the first optical component 311. When the LED lamp beads 21 in the LED array 23 are working, at least a part of the light generated is emitted from the first optical component 311. Specifically, in this embodiment, the first optical component 311 has a light emitting surface 3111, and there is a distance between the light emitting surface 3111 and the LED lamp beads 21 of the LED array 23, and the light generated by the LED lamp beads 21 when working is emitted from the light emitting surface 3111.

[0111] See also Figure 6 and Figure 7 In this embodiment, the plurality of LED lamp beads 21 of the LED array 23 are arranged along a first direction. The first optical component 311 (or the light emitting surface 3111) is extended along the first direction.

[0112] See also Figures 1 to 4 In this embodiment, the light emitting surface 3111 has a main body 31111 extending along the first direction and end portions 31112 located at both ends of the main body 31111 in the first direction. The cross section of the main body 31111 (the cross section in the width direction of the light emitting surface 3111) is in an arc shape, and the end portions 31112 are configured as an arc surface, so that the light emitting surface 3111 has a better light emitting effect. In addition, compared with a flat surface, when the light emitted by the LED lamp bead 21 is projected onto the arc surface, the light reflection is reduced, and the light emitting efficiency can be improved, thereby increasing the light effect. Moreover, the light emitting surface 3111 is closer to the LED lamp bead 21 than the second optical component 312. When the LED lamp bead 21 is working, the light emitting surface 3111 has a higher temperature than the second optical component 312. Therefore, the light emitting surface 3111 is arc-shaped, which can improve the structural strength and have better anti-deformation performance when heated. In other embodiments, the light emitting surface 3111 may also be configured as a spherical surface or a plane.

[0113] In one embodiment, the first optical component 311 is configured to have a light diffusion function to increase the light output angle of the light source 2 and avoid light concentration, which causes visual discomfort. In one embodiment, the first optical component 311 has a light diffusion function due to its own material properties, such as plastic or acrylic. In one embodiment, the first optical component 311 is coated with a diffusion coating or a diffusion film (not shown) on its surface to enable it to have a light diffusion function.

[0114] See also Figure 1 and Figure 2In this embodiment, the optical unit 31 also has a plurality of second optical members 312 (anti-glare components) corresponding to the first optical members 311. The second optical members 312 are configured to reflect at least a portion of the light emitted from the first optical member 311, and at least a portion of the light emitted from the first optical member 311 is transmitted through the second optical member 312. At least a portion of the light transmitted through the second optical member 312 may be emitted from the adjacent second optical member 312, or at least a portion of the light transmitted through the second optical member 312 may be emitted from the second optical member 312 after reflection, so as to avoid the formation of a dark area at the second optical member 312, thereby improving the aesthetics of the LED lighting device when it is lit. In addition, the second optical member 312 reflects at least a portion of the light emitted from the first optical member 311, which plays a certain light-blocking role and can reduce glare.

[0115] See also Figure 4 In this embodiment, on the cross section of the first optical component 311 in the width direction, the first optical component 311 has a midpoint of the bottom. The second optical component 312 has a proximal end and a distal end in the height direction of the LED lighting device, wherein the proximal end is closer to the light source 2 matched therewith than the distal end. The distal end is the lowest end of the second optical component 312 in the height direction of the LED lighting device. The angle a between the line connecting the midpoint and the distal end and the lower end surface of the LED lighting device (the plane where the second connecting wall 314 is located) is between 10 degrees and 45 degrees. Furthermore, the angle a between the line connecting the midpoint and the distal end and the lower end surface of the LED lighting device (the plane where the second connecting wall 314 is located) is between 25 degrees and 35 degrees. In this way, a part of the direct light from the first optical component 311 can be shielded to reduce glare.

[0116] The second optical component 312 includes one or more groups of optical walls 3121, and the optical walls 3121 are configured to have reflective and light-transmitting functions. The optical walls 3121 are arranged around the first optical component 311. In this embodiment, a group of second optical components 312 has 4 groups of optical walls 3121, and the 4 groups of optical walls 3121 are connected in sequence, and the optical walls 3121 are configured as planes. In some embodiments, a group of second optical components 312 may have only one group of optical walls 3121, and the cross-sectional shape of the optical walls 3121 is annular. The optical wall 3121 may be an inclined surface, which is inclined relative to the bottom plate 11. Fig.10 and Fig.16 As shown, in one embodiment, adjacent optical walls 3121 have a smooth transition, such as an arc transition, to avoid forming a dark area at the angle between adjacent optical walls 3121 and to provide a better reflection effect between adjacent optical walls 3121 .

[0117] See also Figure 4In this embodiment, the optical walls 3121 of adjacent second optical members 312 are connected by a first connecting wall 313. At least a portion of the light transmitted through the second optical member 312 is emitted from the first connecting wall 313 to avoid forming a dark area at the first connecting wall 313. The thickness of the first connecting wall 313 is greater than that of the optical wall 3121, which provides better connection strength, and the thinner setting of the optical wall 3121 results in less light loss at the optical wall 3121.

[0118] See also Figure 1 and Figure 8 In this embodiment, a reinforcing structure 316 may be provided on the second optical member 312 to improve the structural strength. Specifically, a reinforcing structure 316 is provided between the optical walls 3121 of adjacent second optical members 312. In other words, the optical walls 3121 between adjacent second optical members 312 are connected by the reinforcing structure 316. In this embodiment, the reinforcing structure 316 is a thin-walled structure.

[0119] See also Figure 1 and Figure 5 In this embodiment, the optical unit 31 also includes a second connecting wall 314, and the mounting unit 32 is connected to the adjacent second optical component 312 through the second connecting wall 314, and at least a portion of the light transmitted through the second optical component 312 is emitted from the second connecting wall 314 to avoid forming a dark area at the second connecting wall 314.

[0120] See also Fig.12 and Fig.14 In some embodiments, the second connecting wall 314 is adjacent to the end wall 13. Moreover, the surface of the second connecting wall 314 is substantially flush with the end wall 13 to increase the aesthetics. In this embodiment, an inner recess 131 is provided at the end wall 13, and the second connecting wall 314 is placed at the inner recess 131, so that the surface of the second connecting wall 314 is flush or substantially flush with the end wall 13.

[0121] In this embodiment, the wall thickness of the first optical component 311 and the second optical component 312 is respectively smaller than the wall thickness of the first connecting wall 313 or the second connecting wall 314. The first optical component 311 is mainly used for light output of the light source 2 (too thick a wall thickness will increase light loss), the second optical component 312 is mainly used for reflection and light transmission (too thick a wall thickness will increase light loss), and the first connecting wall 313 and the second connecting wall 314 are mainly used for structural connection, and strength must be ensured. Therefore, the above-mentioned wall thickness settings can meet the optical and structural requirements respectively.

[0122] In this embodiment, the optical component 3 is an integrated structure.

[0123] See also Figures 1 to 6In this embodiment, the optical component 3 has a first area 301 corresponding to the bottom plate 11 of the base 1, and a second area 302 corresponding to the side wall 12. The second area 302 is configured to be connected to the side wall 12. Specifically, the second area 302 is configured with the aforementioned mounting unit 32. In this embodiment, when the LED lighting device is working, the light source 2 is illuminated, and at least 80% of the first area 301 has light emitted to obtain a more uniform light output. Further, when the LED lighting device is working, the light source 2 is illuminated, and at least 90% of the first area 301 has light emitted to obtain a more uniform light output. Further, when the LED lighting device is working, the light source 2 is illuminated, and all areas on the first area 301 have light emitted to obtain a uniform light output.

[0124] In this embodiment, the first region 301 may include the aforementioned first optical member 311 , the second optical member 312 , the first connecting wall 313 , and the second connecting wall 314 .

[0125] See also Figure 6 and Figure 7 In this embodiment, the circuit board 22 can be provided in multiple groups, and each group of circuit boards 22 can be provided with one or more groups of LED arrays. This embodiment also includes an electrical connection unit 24, and the LED lamp beads 21 on different circuit boards 22 are electrically connected through the electrical connection unit 24. In some embodiments, the electrical connection unit 24 uses a wire. In some embodiments, the electrical connection unit 24 uses a flexible circuit board, and the flexible circuit board is directly welded and fixed to the circuit board 22. Specifically, the electrical connection unit 24 is attached to the circuit board 22 and directly welded to multiple groups of circuit boards 22 to achieve electrical connection. In some embodiments, the electrical connection unit 24 uses a PCB board for connection.

[0126] See also Figure 5 In this embodiment, the optical units 31 may be provided in multiple groups, for example, 2 groups or 4 groups. Adjacent optical units 31 are connected by a third connecting wall 315. An accommodating space is formed between the third connecting wall 315 and the base plate 11, and the power supply 4 is arranged in the accommodating space. Since the power supply 4 is arranged inside the LED lighting device, compared with arranging the power supply 4 outside the base 1, the power supply 4 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.

[0127] See also Figures 10 to 14 In one embodiment, the power source 4 may also be disposed on the back of the bottom plate 11. In this case, there is no need to provide a receiving space on the optical unit 31, that is, there is no need to provide a third connecting wall 315 (such as Figure 3 and Figure 5 As shown), the continuity of the optical unit 31 is better, and the light output effect and the appearance are improved.

[0128] In one embodiment, the base 1 is further provided with an end wall 13, which is formed at the outer edge of the base 1 and connected to the side wall 12. The end wall 13 is arranged parallel or substantially parallel to the bottom plate 11. The side wall 12 and the end wall 13 form an accommodation space (there is a height difference between the end wall 13 and the bottom plate 11, and the power supply 4 is at least partially arranged in the height difference), and the power supply 4 is at least partially located in the accommodation space in the height direction, thereby reducing the height space occupied by the power supply 4 of the LED lighting device.

[0129] In one embodiment, at least half of the height of the power source 4 is located in the accommodation space. The length of the power source 4 accounts for 80%, 85%, 90% or more than 95% of the length of the base 1, so that the power source 4 can increase the structural strength of the base 1 in the length direction.

[0130] See also Figure 21 to Figure 24 In one embodiment, the power supply is disposed between the base 1 and the optical member 3. Specifically, the surface of the base 1 is convexly provided outward (toward the back of the base 1) to form a convex portion 103, and the convex portion 103 forms a concave portion 104 on the front of the base 1, and the power supply can be partially or completely located in the concave portion 104. Further, a cover 105 can be provided on the base 1, and the cover 105 is covered at the concave portion 104, so that a receiving space 106 is formed between the concave portion 104 and the cover 105. The power supply is located inside the receiving space 106. The cover 105 is convexly provided on the front of the base 1, so that the volume of the receiving space 106 is greater than the volume of the concave portion 104.

[0131] 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.

[0132] like Fig.26 and Fig. 27 As shown, in some embodiments, a group of protrusions 103 are provided. When two groups of LED lighting devices are stacked back to back, one of the groups of LED lighting devices is rotated by a certain angle (such as 90 degrees, 180 degrees or 270 degrees), and the protrusions 103 of the two groups of LED lighting devices are staggered so that when the two groups of LED lighting devices are stacked back to back, their total height 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 the above method, the packaging size can be reduced and the transportation cost can be reduced. 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, so that the protrusion 103 can be completely located in one of the quadrants (such as Fig. 27 ), or completely within two quadrants (as shown in Fig.26 shown).

[0133] like Fig.28 As shown, in some embodiments, two groups of protrusions 103 are provided, and a gap 107 is provided between the two groups of protrusions 103. The two groups of protrusions 103 can be extended in the same direction, for example, along the length or width direction of the LED lighting device. When the two groups of LED lighting devices are stacked back to back, one of the groups of LED lighting devices is rotated 90 degrees, and the protrusions 103 of the two groups of LED lighting devices are staggered, so that when the two groups of LED lighting devices are stacked back to back, their total height is less than twice the height of a single group of LED lighting devices, and the provision of the gap 107 can prevent the two groups of LED lighting devices from interfering with each other when they are stacked back to back. In this embodiment, the gap 107 is located at the center of the base 1, and its dimension in the extension direction of the protrusion 103 is greater than the width dimension of the protrusion 103.

[0134] like Fig.25 , Fig.29 and Fig.30 As shown, in this embodiment, the convex portion 103 is located in the middle position in the length or width direction of the LED lighting device (base 1), so that the LED lighting device as a whole is generally a symmetrical structure. In this embodiment, a set of covers 105 are respectively matched with the two sets of concave portions 104. The cover 105 is provided with a plug-in wall 1051, and the base 1 is correspondingly provided with a plug-in hole 108. When the plug-in wall 1051 on the cover 105 is inserted into the plug-in hole 108 of the base 1, the cover 105 can be fixed to the base 1.

[0135] The distance between the LED lamp bead 21 and the cover 105 is controlled to be greater than 15 mm. In addition, the angle a between the side wall of the cover 105 and the surface of the base 1 can be controlled to be greater than 120 degrees. In this way, the influence of the cover 105 on the light emission of the LED lamp bead 21 can be prevented or reduced.

[0136] See also Fig.14 The LED lighting device in one embodiment may further include a hanging support 5, which is configured to be used to install the LED lighting device on a bracket (commonly known as a keel) on the ceiling. The hanging support 5 may be made of metal, such as copper or iron. One end of the hanging support 5 is fixed to the end wall 13, and the other end may be bent accordingly to hang it on the bracket.

[0137] See also Fig.14 , Figures 17 to 20, the LED lamp bead 21 of the LED array 23 has a beam angle of A. The definition of the beam angle (the angle formed on both sides when the light intensity reaches 50% of the normal light intensity is the beam angle) is a 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 bead 21 is projected onto the inner surface of the first optical component 311 within the boundary of the beam angle A, and forms a projection area m on the inner surface of the first optical component 311 (the projection area m is a curved surface or a plane or other irregular surface), and the area of ​​the projection area m is greater than 500 square millimeters. In order to avoid a granular feeling on the first optical component 311 when the LED lamp bead 21 is lit, the light intensity on the projection area m should be less than 50,000 lux without considering the influence of the adjacent LED lamp beads 21.

[0138] The size of the projection area m depends on the distance from the LED lamp bead 21 to the first optical component 311. When the distance is larger, the thickness of the optical unit 3 is 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 the illumination difficult to control and forming a granular feeling. Therefore, in this embodiment, the distance from the LED lamp bead 21 to the first optical component 311 is controlled between 6 and 15 millimeters. In addition, without considering the influence of the adjacent LED lamp beads 21, 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 21 to the first optical component 311 within the range of the beam angle A can be used as the distance to be controlled.

[0139] The luminous flux of the LED lamp beads 21 is L. In the case where only one row of LED lamp beads 21 is arranged in the LED array 23, the projection areas m of the LED lamp beads 21 of the same LED array 23 on the inner surface of the first optical component 311 may partially overlap. Considering the superposition of the projection areas m of different LED lamp beads 21 on the inner surface of the first optical component 311, the illumination at any position within any projection area m does not exceed 5L / m to prevent the formation of strong light when the projection areas m of the LED lamp beads 21 are superimposed. In one embodiment, the illumination at any position within any projection area m does not exceed 4L / m to prevent the formation of strong light when the projection areas m of the LED lamp beads 21 are superimposed. In one embodiment, the illumination at any position within any projection area m does not exceed 3L / m to prevent the formation of strong light when the projection areas m of the LED lamp beads 21 are superimposed. In one embodiment, the illumination at any position within any projection area m does not exceed 2L / m to prevent the formation of strong light when the projection areas m of the LED lamp beads 21 are superimposed.

[0140] One of the factors that affect the overlap of the projection areas m of the LED lamp beads 21 is the distance between the LED lamp beads 21. In one embodiment, the center distance between the LED lamp beads 21 is controlled to be greater than 4 mm or 4.5 mm.

[0141] In one embodiment, the number of LED lamp beads in the LED array 23 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 23 is n, and the number of projection areas m superimposed by any area of ​​any projection area m is less than n.

[0142] The total projection area on the inner surface of the first optical component 311 is M. As an example, Fig. 20 For illustration, when the LED array 23 has two LED lamp beads 21, and the projection areas m of the two LED lamp beads 21 overlap, then the total projection area M on the inner surface of the first optical component 311 is composed of the boundary between the two LED lamp beads 21 and the projection area m on the inner surface of the first optical component 311, that is, the area of ​​the total projection area M is the sum of the areas of the projection areas m of the two LED lamp beads 21 on the inner surface of the first optical component 311 minus the area of ​​the overlapping area.

[0143] The luminous intensity near the optical axis of the beam angle A is greater than the luminous intensity at the boundary area of ​​the beam angle A, that is, looking at a single projection area m, the illumination intensity within its range is not uniform. Therefore, the following setting can be made, that is, 30%, 35%, or 40% or more of the total projection area M on the inner surface of the first optical component 311 has at least two groups of projection areas m superimposed, so as to improve the uniformity of illumination within the total projection area M. However, in order to avoid the superposition of too many projection areas m and cause uneven illumination intensity, it is possible to set no more than 25%, 20%, or 18% of the total projection area M on the inner surface of the first optical component 311 to have 4 or more groups of projection areas m superimposed.

[0144] Based on the above, in this embodiment, when only one optical unit is provided (without a lens), uniform light output can be achieved, the structure is simplified, and the material cost is reduced.

[0145] like Fig.21 , Fig.31 and Fig.32As shown, in one embodiment, a first cavity 3001 is formed in the first optical member 311 (between the first optical member 311 and the surface of the base 1), and a second cavity 3002 is formed between adjacent second optical members 312. The first optical member 311 is connected to the optical wall 3121 of the second optical member 312 in its length direction, and the first cavity 3001 is connected to the second cavity 3002. When the LED lamp bead 21 emits light, at least part of the light enters the second cavity 3002 after being reflected by the base 1 and the first optical member 311, and is transmitted from the corresponding optical wall 3121 and / or the first connecting wall 313 to enhance the light emitting effect of the optical member 3.

[0146] like Figures 33 to 38 As shown, in one embodiment, a first cavity 3001 is formed in the first optical component 311 (between the first optical component 311 and the surface of the base 1), and a second cavity 3002 is formed between adjacent second optical components 312. The first optical component 311 is not connected (not directly connected) to the optical wall 3121 of the second optical component 312 in its length direction and width direction. Therefore, the first cavity 3001 and the second cavity 3002 are not connected (excluding the connection caused by the assembly gap. The assembly gap here is less than 5mm, and it can be regarded that the first cavity 3001 and the second cavity 3002 are not connected). The light generated when the light source 2 is working can be reduced by reflecting in the first cavity 3001 and entering the second cavity 3002, so that the light emitted by the light source 2 when working is more concentrated and emitted through the first optical component 311. As shown Fig.36 and Fig.38 As shown, in other words, the end portion of the first optical member 312 (in Fig.36 and Fig.38 In one embodiment, the distance between the end of the first optical member 312 (i.e., the lower portion of the first optical member 312) and the bottom plate 11 of the base 1 is not more than 5 mm, 4 mm, 3 mm, 2 mm or 1 mm, so as to reduce the light emitted by the light source 2 from leaking out of the gap between the first optical member 312 and the bottom plate 11. Fig.36 and Fig.38 In other words, the lower portion of the first optical component 312 is at least partially in contact with the bottom plate 11 of the base 1 to further reduce light leakage.

[0147] In one embodiment, a positioning groove 111 is provided on the bottom plate 11, and the light source 2 is at least partially accommodated in the positioning groove 111 in the height direction. In other words, the circuit board 22 of the light source 2 is at least partially accommodated in the positioning groove 111 in the thickness direction. When the surface of the circuit board 22 does not exceed the positioning groove 111 (that is, the circuit board 22 is completely accommodated in the positioning groove 111 in the thickness direction), the end 3112 (with the thickness of the circuit board 22 as the center) of the first optical member 312 is Fig.36 and Fig.38In other words, the lower part of the first optical member 312 can be directly attached to the bottom plate 11. When a portion of the circuit board 22 in the thickness direction is accommodated in the positioning groove 111, the end 3112 of the first optical member 312 (with Fig.36 and Fig.38 In other words, the lower portion of the first optical member 312 is against the surface of the circuit board 22. At this time, the end portion 3112 of the first optical member 312 (ie, the lower portion of the first optical member 312) is against the surface of the circuit board 22. Fig.36 and Fig.38 In other words, that is, the lower portion of the first optical component 312 maintains a distance from the bottom plate 11 , and the distance may be the height of the circuit board 22 exposed outside the positioning groove 111 .

[0148] In one embodiment, the optical wall 3121 has a reflective function and can reflect part of the light emitted from the first optical member 311 to reduce the light emitted by the LED lighting device in the lateral direction of the first optical member 311, thereby reducing glare. In this embodiment, in the cross section in the width direction of the first optical member 311, the optical wall 3121 and the optical axis of the LED lamp bead 21 form an acute angle A. The angle of the acute angle A between the optical wall 3121 and the optical axis of the LED lamp bead 21 is 30 to 60 degrees. The optical wall 3121 includes a wall portion corresponding to the length direction of the first optical member 311 and a wall portion corresponding to the width direction of the first optical member 311. The angles between the wall portion of the optical wall 3121 corresponding to the length direction of the first optical member 311 and the wall portion corresponding to the width direction of the first optical member 311 and the optical axis of the LED lamp bead 21 are both within the range of the aforementioned acute angle A. In one embodiment, the angle between the two sets of optical walls 3121 corresponding to the width direction of the first optical member 311 is smaller than the beam angle of the LED lamp bead 21, so as to block light and reduce the glare value. In addition, the angle between the two sets of optical walls 3121 corresponding to the width direction of the first optical member 311 (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.

[0149] Fig.39A schematic diagram of a partial cross-sectional structure of an LED lighting device in an embodiment of horizontal installation and emitting light downward is shown, which shows a cross section in the width direction of the first optical member 311. In this embodiment, in the cross section in the width direction of the first optical member 311, the optical wall 3121 of the second optical member 312 has a lower end point, and the lower end point extends in one direction and forms a straight line, the straight line L1 is tangent to the outer surface of the first optical member 311, and the angle B between the straight line L1 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 substantially parallel to the horizontal plane) 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, when the LED lighting device is installed horizontally, its light emitting surface is parallel or substantially parallel to the horizontal plane) is in the range of 15 to 25 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, when the LED lighting device is installed horizontally, its light emitting surface is parallel or substantially parallel to the horizontal plane) is in the range of 18 to 20 degrees. When the human eye and the first optical component 311 (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 component 311 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 component 311, so the glare can be reduced. From another perspective, a straight line L is set, one end of which is connected to the lower end point of the optical wall 3121, and the other end is tangent to the outer surface of the first optical component 311, and the angle B between the straight line L 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 substantially parallel to the horizontal plane) is greater than 10 degrees, 12 degrees, 14 degrees, 16 degrees or 18 degrees. In some embodiments, the angle B between the straight line L1 and the horizontal plane is in the range of 15 to 25 degrees. In some embodiments, the angle B between the straight line L1 and the horizontal plane is in the range of 18 to 20 degrees. In this embodiment, the cross-sectional shape of the optical wall 3121 may not be set to be straight, as long as the position of its lower end point meets the above requirements, it can play a role in reducing glare.

[0150] Fig.40A schematic diagram of a partial cross-sectional structure of an LED lighting device in an embodiment in which the LED lighting device is installed horizontally and emits light downwards is shown, which shows a cross section in the length direction of the first optical member 311. In this embodiment, in the cross section in the length direction of the first optical member 311, the optical wall 3121 of the second optical member 312 has a lower end point, and the lower end point extends in one direction and forms a straight line, the straight line L is tangent to the outer surface of the first optical member 312, and 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). The value of the angle D is less than the value of the angle B. In some embodiments, the value of the angle D is greater than 10 degrees, 11 degrees, 12 degrees or 13 degrees. In one embodiment, the value of the angle D is in the range of 10 to 20 degrees. In one embodiment, the value of the angle D is in the range of 12 to 16 degrees. When the human eye and the first optical component 311 (or LED lighting device) are in a certain position (the angle E between the line connecting the human eye to the first optical component 311 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 311, so the glare can be reduced. From another perspective, a straight line L2 is set, one end of which is connected to the lower end point of the optical wall 3121, and the other end is tangent to the outer surface of the first optical component 311. 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 3121 in this embodiment may not be set to a straight shape, as long as the position of its lower end point meets the above requirements, it can play a role in reducing glare.

[0151] Fig.41A schematic diagram of a partial cross-sectional structure of an LED lighting device in an embodiment in which the device is installed horizontally and emits light downwards is shown, which shows a cross section in the width direction of the first optical component 311. In this embodiment, in the cross section in the width direction of the first optical component 311, the two groups of optical walls 3121 of the second optical component 312 corresponding to the LED lamp bead 21 both have lower endpoints, and the angle between the center of the light-emitting surface of the LED lamp bead 21 and the connecting lines L3 and L4 of the lower endpoints of the two groups of optical walls 3121 is F, and the value of the angle F is greater than 0.8 times the beam angle A of the LED lamp bead 21 (the angle formed by the two sides when the light intensity of the LED lamp bead 21 reaches 50% of the normal light intensity) to prevent the optical wall 3121 from excessively blocking the light output of the LED lamp bead 21, thereby causing light loss and reducing the light output 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 21 (the angle formed on both sides when the light intensity of the LED lamp bead 21 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 3121 has a certain light-blocking effect to reduce glare.

[0152] Fig.42 A partial cross-sectional structural schematic diagram showing an LED lighting device in an embodiment of being installed horizontally and emitting light downwards shows a cross section of the first optical component 311 in the length direction. In this embodiment, on the cross-section in the length direction of the first optical component 311, there is an LED array 23 corresponding to the first optical component 311, and the two groups of optical walls 3121 of the second optical component 312 correspond to the LED array 23 arranged in the first optical component 311, and the two groups of optical walls 3121 have lower endpoints. The angle G between the midpoint of the light-emitting surface of any LED lamp bead 21 in the LED array 23 of the first optical component 311 and the connecting lines L5 and L6 of the lower endpoints of the two groups of optical walls 3121 is greater than 0.8 times the beam angle A of the LED lamp bead 21 (the angle formed by the two sides when the light intensity of the LED lamp bead 21 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 3121 from excessively blocking the light output of the LED lamp bead 21, 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 21 (when the light intensity of the LED lamp bead 21 reaches 50% of the normal light intensity, the angle formed on both sides is the beam angle A) to ensure that the optical wall 3121 has a certain light blocking effect to reduce glare.

[0153] In one embodiment, there is only one thermal resistance layer (i.e., optical component 3) in the optical axis direction (light emitting direction) of the LED lamp bead 21. When the LED lamp bead 21 is working, at least part of the heat generated by it is radiated to the thermal resistance layer, and the heat is dissipated outward through the thermal resistance layer. Compared with the LED lamp bead 21 needing to dissipate heat outward in the optical axis direction through multiple sets of thermal resistance layers (the prior art usually sets at least two sets of lampshades, lenses, diffusers, or light guide plates to achieve a uniform light emission effect, but the above components all constitute thermal resistance layers), the heat dissipation efficiency is improved.

[0154] In one embodiment, there is only one layer of light-transmitting material (i.e., optical component 3) in the optical axis direction (light emitting direction) of the LED lamp bead 21. When the LED lamp bead 21 is working, the light it generates is emitted to the light-transmitting material, and then emitted from the LED lighting device after passing through the light-transmitting material. Compared with the LED lamp bead 21 needing to emit light outward in the optical axis direction 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 emission efficiency is improved. In some embodiments, the light emission efficiency of the LED lighting device is greater than 80%, 85%, or 90%. The light emission 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 21.

[0155] In one embodiment, the light-transmitting component (first optical component 311) and the anti-glare component (second optical component 312) of the LED lighting device are made of the same layered material and are an integrated component.

[0156] It should be understood that the above description is for illustration and not for limitation. 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 should be determined with reference to the appended claims and the full scope of equivalents possessed by such claims. 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 preceding claims is not intended to be a waiver of the subject matter, nor should it be considered that the inventors did not consider the subject matter to be part of the disclosed inventive subject matter.

Claims

1. An LED lighting device, characterized in that: include: A base having a bottom plate, side walls and end walls, wherein a concave cavity is formed between the bottom plate and the side walls; The end wall is parallel to the bottom plate and has a height difference; the end wall and the side wall form a containing space; An optical component, which is entirely covered on one side of the base in the light emitting direction of the LED lighting device; as well as A light source is disposed in the concave cavity of the base, wherein the light source comprises a plurality of LED arrays, and the LED arrays comprise LED lamp beads; A power source, the power source is electrically connected to the light source, and the power source is at least partially accommodated in the accommodation space; The optical component comprises an optical unit, wherein the optical unit comprises a plurality of first optical components and a plurality of second optical components corresponding to the first optical components, the LED array corresponds to the first optical components, and the second optical component comprises one or more sets of optical walls, and the optical walls are arranged around the first optical components; In the cross section of the first optical component in the width direction, the two groups of optical walls of the second optical component corresponding to the LED lamp bead have lower end points, and the lines connecting the center of the light-emitting surface of the LED and the lower end points of the two groups of optical walls are L3 and L4 respectively, and the value of the angle F between L3 and L4 is greater than 0.8 times the beam angle A of the LED lamp bead.

2. The LED lighting device according to claim 1, characterized in that: The second optical component includes one or more groups of optical walls, the optical walls are arranged around the first optical component, and the optical walls between adjacent second optical components are connected by a first connecting wall; A first cavity is formed in the first optical component, a second cavity is formed between adjacent second optical components, and the first optical component is connected to the optical wall of the second optical component in the length direction thereof, so that the first cavity and the second cavity are in communication.

3. The LED lighting device according to claim 2, characterized in that: When the LED lamp bead emits light, at least part of the light is reflected by the base and the first optical component, enters the second cavity and passes through the corresponding optical wall / connecting wall.

4. The LED lighting device according to claim 3, characterized in that: At least a portion of the light transmitted through the second optical member is emitted from the first connecting wall.

5. The LED lighting device according to claim 1, characterized in that: The optical unit further includes a second connecting wall, a surface of the second connecting wall being flush with the end wall, and at least a portion of the light transmitted through the second optical member is emitted from the second connecting wall.

6. The LED lighting device according to claim 1, characterized in that: The light source also includes a circuit board. The circuit boards are provided in multiple groups. Each group of the circuit boards is provided with one or more groups of the LED arrays. The LED lamp beads on different circuit boards are electrically connected through an electrical connection unit. The light source is fixed to the bottom plate of the base through the circuit board.

7. The LED lighting device according to claim 6, characterized in that: The base is provided with a positioning unit, and the positioning unit comprises a strip-shaped groove provided on the bottom plate, and the circuit board is at least partially or completely accommodated in the groove.

8. The LED lighting device according to claim 7, characterized in that: The electrical connection unit is electrically connected to the circuit board, and the electrical connection unit is attached to the bottom plate and presses the circuit board.

9. The LED lighting device according to claim 1, characterized in that: The first optical component has a light emitting surface, the LED lamp beads of the LED array are arranged along a first direction, and the light emitting surface is extended along the first direction.

10. The LED lighting device according to claim 1, characterized in that: The optical component further includes an installation unit, wherein the installation unit includes a wall portion arranged around the side wall, the wall portion includes a bending portion, and the bending portion and the optical component itself clamp the side wall.

11. The LED lighting device according to claim 9, characterized in that: The light emitting surface has a main body extending along the first direction and end portions located at two ends of the main body in the first direction, wherein the cross-section of the main body is an arc.

12. The LED lighting device according to claim 11, characterized in that: The end portion is configured as an arc surface or a spherical surface.

13. The LED lighting device according to claim 1, characterized in that: The first optical component completely covers the LED lamp bead.

14. The LED lighting device according to claim 10, characterized in that: The bent portion is formed by deforming a wall portion of the optical member.

15. An LED lighting device, characterized in that: include: A base having a bottom plate, side walls and end walls, wherein a concave cavity is formed between the bottom plate and the side walls; The end wall is parallel to the bottom plate and has a height difference; the end wall and the side wall form a containing space; An optical component, which is entirely covered on one side of the base in the light emitting direction of the LED lighting device; as well as A light source is disposed in the concave cavity of the base, wherein the light source comprises a plurality of LED arrays, and the LED arrays comprise LED lamp beads; A power source, the power source is electrically connected to the light source, and the power source is at least partially accommodated in the accommodation space; The optical component comprises an optical unit, wherein the optical unit comprises a plurality of first optical components and a plurality of second optical components corresponding to the first optical components, the LED array corresponds to the first optical components, and the second optical component comprises one or more sets of optical walls, and the optical walls are arranged around the first optical components; On the cross section of the first optical component in the length direction, the two groups of optical walls of the second optical component corresponding to the LED lamp bead have lower end points, and the lines connecting the center of the light-emitting surface of the LED and the lower end points of the two groups of optical walls are L5 and L6 respectively, and the angle G between L5 and L6 is greater than 0.8 times the beam angle A of the LED lamp bead.

16. The LED lighting device according to claim 15, characterized in that: The second optical component includes one or more groups of optical walls, the optical walls are arranged around the first optical component, and the optical walls between adjacent second optical components are connected by a first connecting wall; A first cavity is formed in the first optical component, a second cavity is formed between adjacent second optical components, and the first optical component is connected to the optical wall of the second optical component in the length direction thereof, so that the first cavity and the second cavity are in communication.

17. The LED lighting device according to claim 16, characterized in that: When the LED lamp bead emits light, at least part of the light is reflected by the base and the first optical component, enters the second cavity and passes through the corresponding optical wall / connecting wall.

18. The LED lighting device according to claim 17, characterized in that: At least a portion of the light transmitted through the second optical member is emitted from the first connecting wall.

19. The LED lighting device according to claim 15, characterized in that: The optical unit further includes a second connecting wall, a surface of the second connecting wall being flush with the end wall, and at least a portion of the light transmitted through the second optical member is emitted from the second connecting wall.

20. The LED lighting device according to claim 15, characterized in that: The light source also includes a circuit board. The circuit boards are provided in multiple groups. Each group of the circuit boards is provided with one or more groups of the LED arrays. The LED lamp beads on different circuit boards are electrically connected through an electrical connection unit. The light source is fixed to the bottom plate of the base through the circuit board.

21. The LED lighting device according to claim 20, characterized in that: The base is provided with a positioning unit, and the positioning unit comprises a strip-shaped groove provided on the bottom plate, and the circuit board is at least partially or completely accommodated in the groove.

22. The LED lighting device according to claim 21, characterized in that: The electrical connection unit is electrically connected to the circuit board, and the electrical connection unit is attached to the bottom plate and presses the circuit board.

23. The LED lighting device according to claim 15, characterized in that: The first optical component has a light emitting surface, the LED lamp beads of the LED array are arranged along a first direction, and the light emitting surface is extended along the first direction.

24. The LED lighting device according to claim 15, characterized in that: The optical component further includes an installation unit, wherein the installation unit includes a wall portion arranged around the side wall, the wall portion includes a bending portion, and the bending portion and the optical component itself clamp the side wall.

25. The LED lighting device according to claim 23, characterized in that: The light emitting surface has a main body extending along the first direction and end portions located at two ends of the main body in the first direction, wherein the cross-section of the main body is an arc.

26. The LED lighting device according to claim 25, characterized in that: The end portion is configured as an arc-shaped surface.

27. The LED lighting device according to claim 25, characterized in that: The first optical component completely covers the LED lamp bead.

28. The LED lighting device according to claim 24, characterized in that: The bent portion is formed by deforming a wall portion of the optical member.

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