LED lighting devices and LED lighting fixtures

Abstract

The present invention provides an LED lighting device, etc., that can suppress the darkening of the edges in the width direction of the cover member. [Solution] The LED lighting device 3 comprises a substrate 11 on which LEDs 12 are arranged, a frame 20 having a main plate portion 21 to which the substrate 11 is attached, and a cover member 30 attached to the frame 20. The frame 20 has protruding portions 22 located on both sides of the main plate portion 21 and protruding from the main plate portion 21 toward a first direction, and the protruding portions 22 have inclined plate portions that are inclined toward a second direction as they move outward in the short direction of the frame 20.

Description

Technical Field

[0006] , ,

[0005] , ,

[0001] The present invention relates to an LED lighting device and an LED lighting fixture including the LED lighting device.

Background Art

[0002] LED (Light Emitting Diode) lighting fixtures are known. For example, as an LED lighting fixture installed on a ceiling, there is known a lighting fixture including a long LED lighting device called a light bar and a long fixture body having a recess to which the LED lighting device is detachably attached.

[0003] This type of LED lighting device includes a long substrate, a plurality of LEDs mounted on the substrate, a long and translucent cover member covering the plurality of LEDs, and a long frame that supports the substrate and to which the cover member is attached (for example, Patent Documents 1 and 2).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in a conventional LED lighting device, there is a problem that the end portions in the width direction of the cover member become dark. In particular, when a protruding portion is formed at the end portion in the width direction of the frame for the purpose of increasing the strength of the frame or the like, as in the LED lighting devices disclosed in Patent Documents 1 and 2, the end portions in the width direction of the cover member become dark.

[0006] This invention has been made in view of the above problems, and aims to provide an LED lighting device that can suppress the darkening of the widthwise ends of the cover member, and an LED lighting fixture equipped with the LED lighting device. [Means for solving the problem]

[0007] To achieve the above objective, one embodiment of the LED lighting device according to the present invention comprises a substrate on which LEDs are arranged, a long frame having a main plate portion to which the substrate is attached, and a cover member attached to the frame so as to cover the LEDs, wherein when the direction of the light-emitting side of the LEDs is defined as the first direction with respect to the main plate portion and the direction opposite to the first direction is defined as the second direction, the frame has protruding portions located on both sides of the main plate portion in the short direction of the frame and projecting toward the first direction from the main plate portion, and the protruding portions have inclined plate portions that are inclined toward the second direction as they move toward the outside in the short direction of the frame.

[0008] Furthermore, one embodiment of the LED lighting fixture according to the present invention comprises the above-mentioned LED lighting device and a fixture body having a recess in which the LED lighting device is housed. [Effects of the Invention]

[0009] This makes it possible to realize an LED lighting device that can suppress the darkening of the edges in the width direction of the cover member. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a perspective view of an LED lighting fixture according to an embodiment. [Figure 2] Figure 2 is an exploded perspective view of an LED lighting fixture according to an embodiment. [Figure 3] Figure 3 is a cross-sectional view of an LED lighting fixture according to an embodiment. [Figure 4] Figure 4 is a cross-sectional view of an LED lighting fixture according to an embodiment. [Figure 5]FIG. 5 is a perspective view of the LED lighting device according to the embodiment as seen from the cover member side. [Figure 6] FIG. 6 is a perspective view of the LED lighting device according to the embodiment as seen from the back side. [Figure 7] FIG. 7 is a cross-sectional perspective view of the LED lighting device according to the embodiment. [Figure 8] FIG. 8 is an exploded perspective view of the LED lighting device according to the embodiment. [Figure 9] FIG. 9 is a diagram for explaining an attachment method when attaching the LED lighting device to the fixture body in the LED lighting fixture according to the embodiment. [Figure 10] FIG. 10 is a diagram showing an example of the trajectory of light emitted from the LED in the LED lighting fixture according to the embodiment. [Figure 11A] FIG. 11A is a cross-sectional view of the LED lighting device according to Modification 1. [Figure 11B] FIG. 11B is a cross-sectional view showing a first modification of the LED lighting device according to Modification 1. [Figure 11C] FIG. 11C is a cross-sectional view showing a second modification of the LED lighting device according to Modification 1. [Figure 11D] FIG. 11D is a cross-sectional view showing a third modification of the LED lighting device according to Modification 1. [Figure 11E] FIG. 11E is a cross-sectional view showing a fourth modification of the LED lighting device according to Modification 1. [Figure 11F] FIG. 11F is a cross-sectional view showing a fifth modification of the LED lighting device according to Modification 1. [Figure 12A] FIG. 12A is a cross-sectional view of the LED lighting device according to Modification 2. [Figure 12B] FIG. 12B is a cross-sectional view showing a first modification of the LED lighting device according to Modification 2. [Figure 12C] FIG. 12C is a cross-sectional view showing a second modification of the LED lighting device according to Modification 2. [Figure 12D] FIG. 12D is a cross-sectional view showing a third modification of the LED lighting device according to Modification 2. [Figure 13] Figure 13 is a cross-sectional view of the LED lighting device according to Modification 3. [Figure 14] Figure 14 is a cross-sectional view of the LED lighting device according to Modification 4. [Figure 15A] Figure 15A is a cross-sectional view of the LED lighting device according to Modification 5. [Figure 15B] Figure 15B is a cross-sectional view of the LED lighting device according to Modification 5. [Figure 16] Figure 16 is a cross-sectional view showing a first modification of the LED lighting device according to Modification 5. [Figure 17] Figure 17 is a cross-sectional view showing a second modification of the LED lighting device according to Modification 5. [Figure 18] Figure 18 is a cross-sectional view showing a third modification of the LED lighting device according to Modification 5. [Figure 19] Figure 19 is a cross-sectional view showing a fourth modification of the LED lighting device according to Modification 5. [Figure 20] Figure 20 is a cross-sectional view showing a fifth modification of the LED lighting device according to Modification 5. [Figure 21A] Figure 21A is a cross-sectional view of the LED lighting device according to Modification 6. [Figure 21B] Figure 21B is a cross-sectional view showing a first modification of the LED lighting device according to Modification 6. [Figure 21C] Figure 21C is a cross-sectional view showing a second modification of the LED lighting device according to Modification 6. [Figure 22] Figure 22 is a cross-sectional view of the LED lighting device according to Modification 7. [Figure 23] Figure 23 is a cross-sectional view of the LED lighting device according to Modification 8. [Figure 24] Figure 24 is a cross-sectional view of the LED lighting device according to Modification 9. [Figure 25] Figure 25 is a cross-sectional view of the LED lighting device according to Modification 10. [Figure 26] Figure 26 is a cross-sectional view showing a modification of the LED lighting device according to Modification 10. [Figure 27]Figure 27 is a cross-sectional view of an LED lighting device according to modified example 11. [Figure 28] Figure 28 is a cross-sectional view of an LED lighting device according to modified example 12. [Figure 29] Figure 29 is a cross-sectional view of an LED lighting fixture and LED lighting device according to Modification 13. [Figure 30] Figure 30 is a cross-sectional view showing a first modified example of the frame. [Figure 31] Figure 31 is a cross-sectional view showing a second modified example of the frame. [Figure 32] Figure 32 is a cross-sectional view showing a third modified example of the frame. [Figure 33] Figure 33 is a cross-sectional view showing a fourth modified example of the frame. [Figure 34] Figure 34 is a cross-sectional view showing a fifth modified example of the frame. [Figure 35] Figure 35 is a cross-sectional view showing a sixth modified example of the frame. [Figure 36] Figure 36 is a cross-sectional view showing a seventh modified example of the frame. [Figure 37] Figure 37 is a cross-sectional view showing an eighth modified example of the frame. [Figure 38] Figure 38 is a cross-sectional view showing a ninth modified example of the frame. [Figure 39] Figure 39 is a cross-sectional view showing a tenth modified example of the frame. [Figure 40] Figure 40 is a cross-sectional view showing an eleventh modified example of the frame. [Figure 41] Figure 41 is a cross-sectional view showing the twelfth modified example of the frame. [Figure 42] Figure 42 is a cross-sectional view showing a 13th modified example of the frame. [Figure 43] Figure 43 is a cross-sectional view showing a 14th modified example of the frame. [Figure 44] Figure 44 is a cross-sectional view showing a 15th modified example of the frame. [Figure 45] Figure 45 is a cross-sectional view showing the 16th modified example of the frame. [Figure 46]Figure 46 is a cross-sectional view showing the 17th modified example of the frame. [Figure 47] Figure 47 is a cross-sectional view showing the 18th modified example of the frame. [Figure 48] Figure 48 is a cross-sectional view showing the 19th modified example of the frame. [Figure 49] Figure 49 is a cross-sectional view showing a 20th modified example of the frame. [Figure 50] Figure 50 is a cross-sectional view showing the 21st modified example of the frame. [Figure 51] Figure 51 is a cross-sectional view showing a 22nd modified example of the frame. [Figure 52] Figure 52 is a cross-sectional view showing a 23rd modified example of the frame. [Modes for carrying out the invention]

[0011] The embodiments of the present invention will be described below with reference to the drawings. The embodiments described below are all specific examples of the present invention. Therefore, the numerical values, components, arrangement and connection configurations of components, as well as the processes and their sequences shown in the following embodiments, are examples only and are not intended to limit the present invention. Accordingly, any components in the following embodiments that are not described in the independent claims representing the highest-level concept of the present invention will be described as optional components.

[0012] Note that each figure is a schematic diagram and not necessarily a strictly accurate representation. Also, in each figure, substantially identical components are given the same reference numerals, and redundant explanations are omitted or simplified. In each figure, the X, Y, and Z axes represent the three axes of a three-dimensional Cartesian coordinate system. In this embodiment, the Z axis direction is defined as the vertical direction, and the direction perpendicular to the Z axis (parallel to the XY plane) is defined as the horizontal direction. The X and Y axes are orthogonal to each other, and both... This axis is perpendicular to the Z-axis. In this specification, the terms "up" and "down" do not necessarily refer to the upward (vertically upward) and downward (vertically downward) directions in absolute spatial perception.

[0013] (Embodiment) First, the configuration of the LED lighting fixture 1 according to the embodiment will be explained using Figures 1 to 4. Figure 1 is a perspective view of the LED lighting fixture 1 according to the embodiment. Figure 2 is an exploded perspective view of the same LED lighting fixture 1. Figures 3 and 4 are cross-sectional views of the same LED lighting fixture 1. Figures 3 and 4 show cross-sections when the LED lighting fixture 1 is cut by a plane parallel to the shorter side. Figure 3 shows a cross-section when the part where the power supply device 4 is located is cut, and Figure 4 shows a cross-section when the part where the power supply device 4 is not located is cut.

[0014] As shown in Figures 1 to 4, the LED lighting fixture 1 according to this embodiment comprises a fixture body 2 and an LED lighting device 3 attached to the fixture body 2.

[0015] The fixture body 2 holds the LED lighting device 3. The fixture body 2 is installed in a predetermined location in the building. In this embodiment, the LED lighting fixture 1 is a ceiling-mounted lighting fixture. Therefore, the fixture body 2 is attached to the ceiling of the room using bolts or the like.

[0016] In this embodiment, the fixture body 2 is made of sheet metal and is formed into a long, flat box shape in the Y-axis direction by bending or other processes applied to the metal plate. As shown in Figure 2, the fixture body 2 is provided with a recess 2a having a rectangular opening. The recess 2a is provided in a long shape along the longitudinal direction of the fixture body 2. The recess 2a is a storage section in which the LED lighting device 3 is housed and is provided over substantially the entire length of the fixture body 2. Furthermore, as shown in Figures 2 and 3, on both sides of the recess 2a in the width direction of the fixture body 2, there are inclined surfaces 2b that extend from the opening edge 2a1 of the recess 2a and inclin upward (towards the ceiling) as they extend outwards. As shown in Figure 2, two slits 2c are provided on one of the pair of sides of the recess 2a.

[0017] The LED lighting device 3 is an example of a lighting device that emits illumination light. In this embodiment, the LED lighting device 3 is an LED unit that uses an LED as a light source. The LED lighting device 3 is detachably attached to a recess 2a of the fixture body 2. For example, the LED lighting device 3 can be attached to the recess 2a of the fixture body 2, or the LED lighting device 3 attached to the recess 2a of the fixture body 2 can be removed from the recess 2a. As will be described in detail later, the LED lighting device 3 and the fixture body 2 can be fixed together by hooking and locking the hook fitting 5 and elastic retaining member 6 (kick spring in this embodiment) provided on the LED lighting device 3 to the fixture body 2. The hook fitting 5 is a fitting for attaching the LED lighting device 3 to the fixture body 2. In this embodiment, the hook fitting 5 is a sliding fitting.

[0018] As shown in Figure 3, the LED lighting device 3 emits light using power supplied from a power supply unit 4 housed in the fixture body 2. The power supply unit 4 is a device for supplying power to the light source unit 10 of the LED lighting device 3.

[0019] The power supply unit 4 is located on the rear side of the LED lighting device 3. Specifically, the power supply unit 4 is located in the recess 2a of the fixture body 2. In this embodiment, the power supply unit 4 is attached to the LED lighting device 3 as part of the LED lighting device 3 and is integrated with the LED lighting device 3. However, the power supply unit 4 may not be integrated with the LED lighting device 3 and may be located separately from the LED lighting device 3 in the fixture body 2. For example, the power supply unit 4 may be fixed to the fixture body 2.

[0020] The power supply unit 4 is composed of a power supply circuit that generates power to illuminate the LED lighting device 3. Specifically, the power supply unit 4 has a circuit board 4a, such as a printed wiring board, and a plurality of electronic components 4b mounted on the circuit board 4a. In this embodiment, the power supply unit 4 further has a circuit case 4c that houses the circuit board 4a on which the plurality of electronic components 4b are mounted. The circuit case 4c is a cover that covers the circuit board 4a on which the electronic components 4b are mounted. The circuit case 4c is, as an example, a metal housing made of metal plates. The power supply circuit that constitutes the power supply unit 4 converts AC power from an external power source such as a commercial power supply into DC power at a predetermined level by rectifying, smoothing, and stepping down the voltage, and supplies the DC power to the LEDs of the LED lighting device 3.

[0021] AC power is supplied to the power supply unit 4 via a power terminal block 8 (see Figure 2), to which a power line (such as a VVF cable) is connected, which is inserted from the ceiling through a through-hole in the fixture body 2 and pulled out into a recess 2a of the fixture body 2. The power line, such as a VVF cable, is a construction wire and is an example of an electrical wire. The power terminal block 8 is installed in the recess 2a of the fixture body 2.

[0022] Next, the detailed structure of the LED lighting device 3 will be described using Figures 5 to 8, with reference to Figures 1 to 4. Figure 5 is a perspective view of the LED lighting device 3 according to the embodiment, as seen from the cover member 30 side, and Figure 6 is a perspective view of the LED lighting device 3 as seen from the back side. Figure 7 is a cross-sectional perspective view of the LED lighting device 3. Figure 8 is an exploded perspective view of the LED lighting device 3.

[0023] As shown in Figures 2, 5, and 6, the LED lighting device 3 is a long, linear light source called a light bar. The LED lighting device 3 emits light of a predetermined color, such as white light.

[0024] As shown in Figures 3, 7, and 8, the LED lighting device 3 comprises a light source unit 10, a frame 20 on which the light source unit 10 is arranged, a cover member 30 that covers the light source unit 10, and an end cap 40. In this embodiment, the LED lighting device 3 also includes a power supply unit 4. In other words, the power supply unit 4 is provided on the LED lighting device 3. Specifically, the power supply unit 4 is attached to the ceiling-side surface of the frame 20. For example, as shown in Figure 3, the power supply unit 4 is fixed to the frame 20 by screwing the circuit case 4c to the main plate portion 21 of the frame 20 with screws 50.

[0025] The light source unit 10 is a light-emitting unit that emits illumination light. In this embodiment, the light source unit 10 is elongated. In this case, the elongated light source unit 10 may be a single light source unit with a length approximately equal to the total length of the frame 20 in the longitudinal direction (Y-axis direction), or multiple units may be arranged along the longitudinal direction of the frame 20. As shown in Figure 8, in this embodiment, two light source units 10 are arranged along the longitudinal direction of the frame 20.

[0026] The light source unit 10 is an LED module using LEDs, and as shown in Figures 7 and 8, it comprises a substrate 11 and LEDs 12 arranged on the substrate 11.

[0027] The substrate 11 is a mounting substrate for mounting the LED 12. In this embodiment, the substrate 11 is formed in a substantially rectangular shape that is elongated in the longitudinal direction (Y-axis direction) of the frame 20. The thickness of the substrate 11 is, for example, 1.0 mm. As shown in Figure 8, in this embodiment, two substrates 11 are arranged side by side along the longitudinal direction of the frame 20.

[0028] The substrate 11 is, for example, a printed circuit board (PCB) on which metal wiring is formed in a predetermined pattern. A resist made of an insulating resin material may be formed on the surface of the substrate 11 to cover the wiring in order to protect it and ensure dielectric strength. The substrate 11 is a single-sided printed circuit board on which wiring is formed only on the main surface on which the LED 12 is mounted. Alternatively, a double-sided wiring board with wiring formed on both sides may also be used.

[0029] The substrates used to make up the substrate 11 include resin substrates made of insulating resin materials, ceramic substrates made of sintered bodies of ceramic materials such as alumina, and metal base substrates obtained by applying an insulating coating to the surface of a metal substrate made of a metal material such as aluminum or copper.

[0030] When the substrate 11 is made of a resin substrate, the resin substrate can be, for example, a glass epoxy substrate (CEM-3, FR-4, etc.) made of glass fiber and epoxy resin, a paper phenol substrate (FR-1, FR-2) made of kraft paper or the like and phenol resin, a paper epoxy substrate (FR-3) made of paper and epoxy resin, or a polyimide substrate made of polyimide or the like. Furthermore, the substrate 11 may be a rigid substrate or a flexible substrate in the form of a film.

[0031] The metal wiring formed on the substrate 11 is electrically connected to the power supply unit 4. In this case, the electrodes or connector terminals formed on the substrate 11 and the power supply unit 4 are connected by wires such as lead wires. The wires connecting the substrate 11 and the power supply unit 4 are inserted, for example, through holes provided in the frame 20.

[0032] The substrate 11 is placed on the frame 20. The substrate 11 has a first surface on which the LEDs 12 are mounted, and a second surface facing away from the first surface. The first surface of the substrate 11 is the surface facing the cover member 30, and the second surface of the substrate 11 is the surface facing the frame 20. In this embodiment, the second surface of the substrate 11 is in contact with the frame 20.

[0033] As shown in Figures 7 and 8, LEDs 12 are arranged on the substrate 11. Specifically, multiple LEDs 12 are arranged on the first surface of the substrate 11. In this embodiment, the multiple LEDs 12 are mounted in a straight line along the longitudinal direction (Y-axis direction) of the substrate 11 at predetermined intervals. Specifically, the multiple LEDs 12 are mounted along substantially the entire length of the substrate 11 in the longitudinal direction. Therefore, the multiple LEDs 12 are mounted along the longitudinal direction of the frame 20 and the cover member 30. Note that the multiple LEDs 12 may be mounted in multiple rows rather than a single row along the longitudinal direction of the substrate 11. The multiple LEDs 12 emit light due to the DC current supplied from the power supply 4 via the wires connecting the power supply 4 and the substrate 11.

[0034] LED12 is an example of a light-emitting element. In this embodiment, each of the multiple LEDs 12 is an individually packaged SMD structure LED element (LED light source). Therefore, the light source unit 10 is an SMD type LED module.

[0035] The SMD type LED 12 comprises a white container (package) made of resin or ceramic, an LED chip (bare chip) placed inside the container, and a sealing member that seals the LED chip. In this embodiment, the LED 12 is a white LED element that emits white light. In this case, for example, a blue LED chip that emits blue light when energized is used as the LED chip, and a silicone resin (phosphor-containing resin) containing a yellow phosphor such as YAG is used as the sealing member that fills the container.

[0036] The light source unit 10, configured in this way, is placed on the frame 20. Specifically, the substrate 11 of the light source unit 10 is placed on the frame 20.

[0037] The frame 20 is a long mounting member (base member) to which the light source unit 10 is attached. Specifically, the substrate 11 of the light source unit 10 is attached to the frame 20.

[0038] The frame 20, like the light source unit 10 and the fixture body 2, is formed in an elongated shape in the Y-axis direction. The light source unit 10 is supported by the frame 20. In this embodiment, the frame 20 not only supports the light source unit 10 but also supports the cover member 30. Specifically, the substrate 11 on which the LEDs 12 are arranged is placed on the frame 20 and fixed to the frame 20, thereby supporting the substrate 11 on which the LEDs 12 are arranged by the frame 20.

[0039] The frame 20 is made of sheet metal and is composed of metal plates. The frame 20 is formed into a predetermined shape by rolling or pressing a single sheet of metal (metal plate), for example, SPCC (Steel Plate Cold Commercial). The thickness of the metal plates constituting the frame 20 is, for example, 0.2 mm to 2 mm. In this embodiment, since the frame 20 is formed by sheet metal processing, the thickness of the metal plates constituting the frame 20 is preferably 1 mm or less. In this embodiment, the thickness of the metal plates constituting the frame 20 is set to 0.5 mm.

[0040] Furthermore, the method for manufacturing the frame 20 is not limited to roll forming and press forming, but may also be aluminum extrusion molding, etc. Also, the frame 20 is not limited to metal material, but may be made of resin material.

[0041] As shown in Figures 3 and 4, the frame 20 has a plate-shaped main plate portion 21 to which the substrate 11 is attached, a pair of protrusions 22, and a pair of side plate portions 23. The protrusions 22 are provided between the main plate portion 21 and the side plate portions 23. Specifically, one end of the protrusion 22 is connected to the main plate portion 21, and the other end of the protrusion 22 is connected to the side plate portion 23. As shown in Figure 8, the main plate portion 21, the pair of protrusions 22, and the pair of side plate portions 23 all extend along the Y-axis direction.

[0042] The main plate portion 21 is the main body of the frame 20, and as shown in Figure 3, a substrate 11 on which the LEDs 12 are arranged is placed on the main plate portion 21. In other words, the main plate portion 21 supports the substrate 11. In this embodiment, the substrate 11 and the main plate portion 21 are in contact.

[0043] The main plate portion 21 is a long plate shape and has a first surface which is the surface facing the substrate 11 and a second surface which is facing away from the first surface. When the LED lighting fixture 1 is installed on the ceiling, the frame 20 is arranged such that the first and second surfaces of the main plate portion 21 are substantially parallel to the ceiling surface. In this case, the first surface of the main plate portion 21 is the surface facing the floor, and the second surface of the main plate portion 21 is the surface facing the ceiling.

[0044] The main plate portion 21 is elongated in the Y-axis direction and is a flat, plate-like portion with a constant thickness. The main plate portion 21 is the main body of the frame 20, and the light source portion 10 is arranged on the main plate portion 21. Specifically, the substrate 11 of the light source portion 10 is placed on the main plate portion 21.

[0045] As shown in Figure 3, the main plate portion 21 is located on the bottom side of the recess 2a of the fixture body 2, relative to the opening surface of the recess 2a. In this embodiment, the LED 12 is also located on the bottom side of the recess 2a of the fixture body 2, relative to the opening surface of the recess 2a. Specifically, the main plate portion 21 and the LED 12 are located on the ceiling side of the opening edge 2a1 of the recess 2a.

[0046] As shown in Figure 8, the main plate portion 21 has a claw portion 21a formed by cutting and bending a part of the frame 20 which is made of a metal plate. The substrate 11 placed on the main plate portion 21 is fixed to the main plate portion 21 by locking it with this claw portion 21a. In this case, for example, the substrate 11 may be slid to lock it with the claw portion 21a, or the substrate 11 may be locked with the claw portion 21a by crimping the claw portion 21a. Note that the method of fixing the main plate portion 21 and the substrate 11 is not limited to the locking structure by the claw portion 21a, and the main plate portion 21 and the substrate 11 may be fixed together with adhesive or adhesive tape, etc. The main board portion 21 is in contact with the substrate 11, but is not limited to that. For example, another component such as a thermal conductive sheet may be inserted between the main board portion 21 and the substrate 11. The main board portion 21 is also provided with through holes through which wires for electrically connecting the wiring of the substrate 11 and the power supply unit 4 are inserted.

[0047] As shown in Figures 3 and 4, the protrusions 22 are located on both sides of the main plate portion 21 in the short direction of the frame 20. That is, one of the pair of protrusions 22 is located on one side of the main plate portion 21 in the short direction of the frame 20, and the other of the pair of protrusions 22 is located on the other side of the main plate portion 21 in the short direction of the frame 20.

[0048] Furthermore, when the first direction, which is the direction of light emission from the LED 12, is defined as the direction toward the floor, with the main plate portion 21 as the reference point, and the second direction, which is the direction opposite to the floor direction (first direction), is defined as the direction toward the ceiling, each of the pair of protrusions 22 protrudes from the main plate portion 21 toward the floor (first direction). In other words, the pair of protrusions 22 are located toward the floor than the main plate portion 21.

[0049] Furthermore, at least a portion of the pair of protrusions 22 is located on the floor side of the opening surface of the recess 2a of the fixture body 2. In other words, at least a portion of the pair of protrusions 22 is located on the floor side of the opening edge 2a1 of the recess 2a.

[0050] The pair of protrusions 22 can be formed by press working or the like to make a portion of the metal plate constituting the frame 20 protrude convexly toward the floor. Therefore, the thickness of the protrusions 22 and the thickness of the main plate 21 are the same.

[0051] As shown in the enlarged view of Figure 3, each of the pair of protrusions 22 has a first plate portion 22a, a second plate portion 22b located on one side of the first plate portion 22a, and a third plate portion 22c located on the other side of the first plate portion 22a. In other words, the first plate portion 22a, the second plate portion 22b, and the third plate portion 22c are all parts of the protrusion 22, and the first plate portion 22a is located between the second plate portion 22b and the third plate portion 22c.

[0052] The first plate section 22a is a parallel plate section parallel to the main plate section 21. The second plate section 22b is an inclined plate section that is inclined relative to the main plate section 21. The third plate section 22c is an upright plate section that is erected relative to the main plate section 21.

[0053] The first plate portion 22a is located on the floor side of the opening surface of the recess 2a of the fixture body 2. In other words, the first plate portion 22a is located on the floor side of the opening edge 2a1 of the recess 2a. The inclined second plate portion 22b is located outside the first plate portion 22a and is connected to the end of the side plate portion 23. The upright plate portion, the third plate portion 22c, is located inside the first plate portion 22a and is connected to the end of the main plate portion 21. Therefore, the projection portion 22 as a whole is configured to incline outward.

[0054] The protruding portion 22 may be configured to be inclined inward. In this case, the inclined second plate portion 22b is located inside the first plate portion 22a and connected to the end of the main plate portion 21, while the upright third plate portion 22c is located outside the first plate portion 22a and connected to the end of the side plate portion 23.

[0055] The first plate portion 22a, the second plate portion 22b, and the third plate portion 22c are all located on both sides of the main plate portion 21 in the short direction of the frame 20, and are located on the floor side (first direction side) of the main plate portion 21. Furthermore, the first plate portion 22a, the second plate portion 22b, and the third plate portion 22c are all flat. In other words, the first plate portion 22a, the second plate portion 22b, and the third plate portion 22c are flat plates.

[0056] The pair of side plates 23 are plate-shaped side sections and are formed as a pair of legs in the frame 20. Each of the pair of side plates 23 extends toward the floor. Specifically, each of the pair of side plates 23 extends in the Z-axis direction from both ends in the short direction (X-axis direction) of the main plate 21. The side plates 23 extend from the outer ends of the projection 22 in the short direction of the frame 20. Specifically, the side plates 23 extend toward the ceiling from the second plate portion 22b of the projection 22.

[0057] In this embodiment, the connection between the side plate portion 23 and the protruding portion 22 is located on the floor side (first direction side) of the main plate portion 21. The side plate portion 23 extends from the protruding portion 22 beyond the position of the main plate portion 21 toward the ceiling side, but is not limited to this. For example, the length of the side plate portion 23 in the Z-axis direction may be the length from the protruding portion 22 to the position of the main plate portion 21, or it may be shorter than the length from the protruding portion 22 to the position of the main plate portion 21. In other words, the ceiling-side tip of the side plate portion 23 may be located on the ceiling side of the height position of the LED 12, or at the same height position as the LED 12, or it may be located on the floor side of the height position of the LED 12.

[0058] The tip portions of the pair of side plate portions 23 are provided with bendable portions 23a that are formed to bend. In this embodiment, the bendable portion 23a is a folded portion formed by folding the tip portion of the side plate portion 23 in the thickness direction. Therefore, the bendable portion 23a is composed of a folded portion and a portion opposite the folded portion (an unfolded portion). The folded portion of the bendable portion 23a can be formed, for example, by curling and rolling up the tip portion of the side plate portion 23. Note that the bendable portion 23a is not limited to one formed by curling, but may also be formed by hemming or the like. Note that the bendable portion 23a formed by curl bending or hemming bending is formed by folding inward in the width direction, but is not limited to this, and may also be formed by folding outward in the width direction. Furthermore, the bendable portion 23a may not be formed at all.

[0059] A mounting portion 33 for the cover member 30 is attached to each of the pair of side plate portions 23. Specifically, the cover member 30 can be fixed to the frame 20 by snapping the bent portion 23a of the side plate portion 23 into the recess 33a provided in the mounting portion 33 of the cover member 30.

[0060] The light source unit 10, supported by the frame 20, is covered by a cover member 30. Specifically, the cover member 30 covers all the LEDs 12 in the light source unit 10. As shown in Figure 3, the cover member 30 also covers the substrate 11 of the light source unit 10 and is positioned opposite the substrate 11 to cover multiple LEDs 12. In this way, the cover member 30 is attached to the frame 20 so as to cover the LEDs 12.

[0061] The cover member 30 is an example of a light-transmitting cover, and transmits light emitted from the LED 12. In this embodiment, the cover member 30 is not only light-transmitting but also a diffuser cover. Therefore, the light from the LED 12 incident on the cover member 30 is diffused (scattered) by the cover member 30 and then transmitted through the cover member 30.

[0062] As shown in Figures 6 and 7, the cover member 30 further covers the frame 20 on which the light source unit 10 is located. In this embodiment, the cover member 30 covers the entire frame 20 on which the light source unit 10 is located. The cover member 30 is formed in an elongated shape in the Y-axis direction, similar to the light source unit 10 and the frame 20.

[0063] The cover member 30 is attached to the frame 20. The cover member 30 and the frame 20 form a cylindrical body, and the light source unit 10 is housed inside this cylindrical body.

[0064] As shown in Figures 3 and 7, the cover member 30 has a main portion 31 having a surface facing the LED 12, a pair of extension portions 32 connected to the main portion 31, and a pair of mounting portions 33 connected to each of the pair of extension portions 32.

[0065] As shown in Figure 3, a gap G exists between the cover member 30 and the inner surface of the recess 2a of the fixture body 2. In this embodiment, this gap G is the gap between the mounting portion 33 and the inner surface of the recess 2a.

[0066] The main part 31 is the main body of the cover member 30 and transmits the light from the LED 12 to the outside. The main part 31 constitutes the external appearance of the cover member 30. As shown in Figure 8, the main part 31 is elongated in the Y-axis direction and formed in a trough shape. The main part 31 is, for example, a flattened, substantially semi-cylindrical shape. Therefore, the main part 31 has an elongated rectangular open end face that extends in the Y-axis direction. Also, when cut along the X-axis direction, the cross-sectional shape of the main part 31 is a curved shape that is substantially curved in an arc. Note that the shape of the main part 31 is not limited to a barrel-like R shape, but may also be a U-shape or other angular shape, or an angular shape with a part of the side constricted.

[0067] The main portion 31 has an outer end portion 31a located outside the frame 20 in the short-side direction of the frame 20, beyond the protruding portion 22 of the frame 20. Specifically, the outer end portion 31a is the part of the main portion 31 that is located outside the mounting portion 33. The outer end portion 31a of the main portion 31 faces the opening edge 2a1 of the recess 2a of the fixture body 2. The opening edge 2a1 of the recess 2a is a flat surface parallel to the XY plane.

[0068] The pair of extensions 32 are plate-shaped pieces with a uniform thickness. In this embodiment, the pair of extensions 32 are formed symmetrically on both sides with respect to the center of the cover member 30 in the XZ cross-section, but are not limited to this.

[0069] Each extension 32 has an outward extension 32a located outside the frame 20 in the short-side direction of the frame 20, and an inward extension 32b extending toward the LED 12 side from the outward extension 32a so as to cover at least a part of the protrusion 22.

[0070] In this embodiment, the outward-extending portion 32a is the portion located outside the mounting portion 33, and the inward-extending portion 32b is the portion located inside the mounting portion 33. In this case, as shown in Figure 3, the outward-extending portion 32a is a portion formed in a flat plate shape, and the inward-extending portion 32b is a portion formed to bend with the protruding portion 22 of the frame 20 as the boundary. Specifically, the inward-extending portion 32b has a portion that extends toward the floor from the connection portion between the outward-extending portion 32a and the mounting portion 33, and a portion whose tip extends toward the ceiling from the portion facing the protruding portion 22 of the frame 20.

[0071] Each extension portion 32 extends from the inner surface of the main portion 31 toward the inside of the cover member 30. In other words, each extension portion 32 extends from the inner surface of the main portion 31 toward the LED 12 side. Each extension portion 32 extends toward the LED side from a position toward the ceiling (second direction side) than the part of the protruding portion 22 of the frame 20 that is located furthest toward the floor (first direction side) on the inner surface of the main portion 31. In this embodiment, the part of the protruding portion 22 of the frame 20 that is located furthest toward the floor is the first plate portion 22a of the protruding portion 22. Therefore, each extension portion 32 extends toward the LED 12 side from a position toward the ceiling side than the first plate portion 22a. Specifically, each extension portion 32 is connected to the tip of the outer end portion 31a of the main portion 31. Therefore, in each extension portion 32, the outer extension portion 32a is connected to the tip of the outer end portion 31a of the main portion 31, and the outer extension Part 32a extends from the outer end 31a of the main part 31 toward the LED 12 side.

[0072] The extended portion 32a has a portion that overlaps with the gap G between the inner surface of the recess 2a and the mounting portion 33 in the direction towards the floor or ceiling (i.e., in the Z direction). Furthermore, the extended portion 32a faces the open end edge 2a1 of the recess 2a. Therefore, the extended portion 32a is formed to straddle the gap G.

[0073] The portion of the extended portion 32a facing the opening edge 2a1 and the outer end 31a of the main portion 31 form a projection that protrudes outward from the mounting portion 33. Specifically, this projection is formed in a V-shape in the XZ cross section. The extended portion 32a does not protrude outward beyond the outer edge in the width direction of the opening surface of the recess 2a of the fixture body 2. Specifically, the extended portion 32a does not protrude outward in the Y-axis direction beyond the opening edge 2a1 of the recess 2a. Specifically, the connection portion (the apex of the V-shape) between the extended portion 32a and the outer end 31a of the main portion 31 is on almost the same plane as the inclined surface 2b of the fixture body 2. As a result, the inclined surface 2b of the fixture body 2 and the surface of the main portion 31 of the cover member 30 become a single continuous surface, improving the aesthetic design of the LED lighting device 3.

[0074] The extended portion 32a is a contact portion that can abut against the open edge 2a1 of the recess 2a of the fixture body 2. When the LED lighting device 3 is housed in the recess 2a of the fixture body 2, the extended portion 32a may or may not be in contact with the open edge 2a1. In other words, there may be a gap between the extended portion 32a and the open edge 2a1, or the extended portion 32a and the open edge 2a1 may be in close contact.

[0075] Each of the pair of extensions 32 extends toward the LED 12 so as to cover at least a portion of the protruding portion 22 of the frame 20. In this embodiment, the inner extension 32b of each extension 32 covers the protruding portion 22 of the frame 20.

[0076] At least a portion of each extension 32 has a shape that conforms to a portion of the frame 20. In this embodiment, at least a portion of each extension 32 has a shape that conforms to a projection 22 of the frame 20. Specifically, the inner extension 32b of each extension 32 has a shape that conforms to a projection 22 of the frame 20.

[0077] Each extension 32 is bent so as to protrude toward the floor. In other words, each extension 32 is formed to have a protrusion that protrudes toward the floor, similar to the protrusion 22 of the frame 20. The protrusion 22 of the frame 20 protrudes toward the bent portion (protruding portion) of this extension 32. Therefore, the protrusion 22 of the frame 20 is formed to fit into the protruding portion of the extension 32.

[0078] Furthermore, at least a portion of each extension 32 may come into contact with the frame 20. Specifically, at least a portion of each extension 32 may come into contact with a portion of the protruding portion 22 of the frame 20. More specifically, each extension 32 may come into contact with the first plate portion 22a and the second plate portion 22b of the protruding portion 22.

[0079] As shown in Figure 3, in this embodiment, the internally extending portion 32b has a first surface portion 32b1 that can abut against the first plate portion 22a of the protruding portion 22, and a second surface portion 32b2 that can abut against the second plate portion 22b of the protruding portion 22.

[0080] Thus, when the LED lighting device 3 is housed in the recess 2a of the fixture body 2, at least a portion of each extended portion 32 may or may not be in contact with the protruding portion 22. For example, the first surface portion 32b1 and of the inner extended portion 32b of the extended portion 32 The two surfaces 32b2 and the first plate portion 22a and the second plate portion 22b of the protruding portion 22 on the frame 20 may or may not be in contact.

[0081] In each extended portion 32, the first surface portion 32b1 and the second surface portion 32b2 of the inwardly extended portion 32b are both flat, similar to the first plate portion 22a and the second plate portion 22b of the protruding portion 22. In other words, the first surface portion 32b1 and the second surface portion 32b2 of the inwardly extended portion 32b are flat.

[0082] Furthermore, in the internally extended portion 32b, the first surface portion 32b1 is a parallel plate portion parallel to the main plate portion 21 of the frame 20, similar to the first plate portion 22a of the protruding portion 22 of the frame 20, and the second surface portion 32b2 is an inclined plate portion that is inclined with respect to the main plate portion 21 of the frame 20, similar to the second plate portion 22b of the protruding portion 22 of the frame 20. The first surface portion 32b1 of the internally extended portion 32b and the first plate portion 22a of the protruding portion 22 are parallel and face each other. Similarly, the second surface portion 32b2 of the internally extended portion 32b and the second plate portion 22b of the protruding portion 22 are parallel and face each other.

[0083] In this embodiment, at least a portion of each extension 32 is in contact with the projection 22. Specifically, the first surface 32b1 of the inner extension 32b of each extension 32 is in contact with the first plate portion 22a of the projection 22. Also, the second surface 32b2 of the inner extension 32b of each extension 32 is in contact with the second plate portion 22b of the projection 22.

[0084] The tip of each extension 32 is located closer to the center of the frame 20 than the protruding portion 22 of the frame 20. In other words, the tip of each extension 32 is located closer to the center of the frame 20 than the first plate portion 22a, the second plate portion 22b, and the third plate portion 22c of the protruding portion 22.

[0085] The extension portion 32 is formed so that its tip extends toward the substrate 11. Specifically, the inner extension portion 32b of the extension portion 32 is formed so as to be inclined toward the substrate 11. However, the inner extension portion 32b may also extend parallel to the substrate 11, similar to the outer extension portion 32a, without being inclined.

[0086] In the Z-axis direction, the tip of the extension portion 32 overlaps with the substrate 11. In this embodiment, the tip of the extension portion 32 is in contact with the substrate 11. Specifically, the tip of the inner extension portion 32b of the extension portion 32 is in contact with the main surface of the substrate 11. This prevents insects from entering the space between the main portion 31 of the cover member 30 and the main plate portion 21 of the frame 20, even if insects enter through the gap between the mounting portion 33 of the cover member 30 and the side plate portion 23 of the frame 20. Furthermore, by pressing down on the substrate 11 with the extension portion 32, it is possible to prevent the frame 20 to which the substrate 11 is attached from shifting toward the floor. Moreover, even if the adhesive peels off when the substrate 11 is bonded and fixed to the frame 20 with adhesive, the substrate 11 that detaches from the frame 20 will be supported by the extension portion 32. In other words, it is possible to prevent the substrate 11 from falling.

[0087] Each extension 32 is preferably located outside the illumination angle of the LED 12 (for example, the 1 / 2 beam angle). For example, if the light from the LED 12 is directly incident on the extension 32, it is desirable to position the extension 32 outside the illumination angle of the LED 12. This reduces the loss of light emitted from the LED 12 in the cover member 30, allowing more of the light emitted from the LED 12 to pass through the cover member 30 and be emitted to the outside. In other words, the light extraction efficiency of the cover member 30 can be improved.

[0088] A space exists between each extension 32 and the frame 20. Specifically, a space exists between each extension 32 and the main plate portion 21 of the frame 20. This space is used to accommodate the threads or heads of screws when various parts are fastened with screws, and also to separate the frame 20 from other metal parts. The crimped portion can be stored in this space. For example, as shown in Figure 3, the screw legs of the screw 50 used to fix the power supply unit 4 and the frame 20 are stored in this space.

[0089] Furthermore, functional components or internal wiring may be housed in the space between each extension 32 and the frame 20. Functional components are, for example, function expansion modules. Examples of function expansion modules include a sensor unit equipped with various sensors such as a motion sensor and a brightness sensor, a wireless module having an antenna and control circuit for receiving wireless signals, an infrared module having a light-receiving element and control circuit for receiving infrared signals, or a second light source separate from the LED 12 (first light source) mounted on the circuit board 11. Wireless signals or infrared signals are, for example, remote control signals for turning the LED 12 on and off or adjusting its brightness and color, or setting signals for making various settings of the LED lighting device 3. The second light source is a light source for monitor display, a light source for controlling the light distribution of the illumination light emitted from the cover member 30 (for example, a light source for wide light distribution), a color light source for effect (for example, red, blue, and green LED light sources), or an emergency light source that lights up in an emergency. Furthermore, if an emergency light source is used as the second light source, the cover and / or cover member 30 covering the second light source should preferably be made of a flame-retardant material such as glass.

[0090] The pair of mounting portions 33 are attached to the frame 20 and are formed as a pair of legs on the cover member 30. Specifically, the pair of mounting portions 33 are attached to a pair of side plate portions 23 of the frame 20.

[0091] Each of the pair of mounting portions 33 extends from a part of the extension portion 32 toward the ceiling. The lengths of the pair of mounting portions 33 in the Z-axis direction are the same. As shown in Figure 7, each of the pair of mounting portions 33 is formed in an elongated shape along the Y-axis direction. The lengths of the pair of mounting portions 33 in the Y-axis direction are also the same.

[0092] As shown in Figures 6 and 7, a recess 33a is formed on the inside in the width direction (X-axis direction) at the tip of each of the pair of mounting portions 33. The bent portion 23a provided at the tip of the side plate portion 23 of the frame 20 is fitted into this recess 33a, thereby locking and fixing the pair of mounting portions 33 of the cover member 30 and the pair of side plate portions 23 of the frame 20 together. As a result, the pair of mounting portions 33 of the cover member 30 are fixed to the frame 20 by embracing it.

[0093] Alternatively, the side plate portion 23 of the frame 20 and the mounting portion 33 of the cover member 30 may be fixed together with screws. These screws are screwed into the overlapping portion of the side plate portion 23 and the mounting portion 33 from the outside of the mounting portion 33.

[0094] Furthermore, in this embodiment, the recess 33a is formed so that its tip is folded back, and the cross-sectional shape of the recess 33a is approximately U-shaped or U-shaped. However, the shape of the recess 33a is not limited to these. For example, the recess 33a may have an L-shaped cross-section with no folded back tip, or it may have a V-shaped cross-section, or it may have an arc-shaped cross-section. However, it is preferable that the recess 33a is shaped so that the bent portion 23a is fitted into it.

[0095] The cover member 30 is made of a translucent resin material such as acrylic or polycarbonate, or a translucent material such as glass. In this embodiment, the cover member 30 is made of a translucent resin material. In this case, the cover member 30 can be a milky white cover member in which a light diffusing material is dispersed inside. Such a cover member 30 can be manufactured by resin molding a translucent resin material mixed with a light diffusing material into a predetermined shape. It is possible. As a light diffusing material, light-reflective fine particles such as silica particles can be used.

[0096] Furthermore, the cover member 30 may be constructed by forming a milky white light-diffusing film containing a light-diffusing material on the surface (inner or outer surface) of the transparent cover, rather than dispersing the light-diffusing material inside. Alternatively, the cover member 30 may be configured to have light-diffusing properties by applying a diffusion process rather than using a light-diffusing material. For example, the cover member 30 may be configured to have light-diffusing properties by forming minute irregularities on the surface of the transparent cover by applying a surface treatment such as texturing, or by printing a dot pattern on the surface of the transparent cover. Even when the cover member 30 is subjected to a diffusion process, it may contain an additional light-diffusing material to further enhance its light-diffusing properties.

[0097] In this embodiment, the main portion 31, the extension portion 32, and the mounting portion 33 constituting the cover member 30 are formed integrally. Therefore, the main portion 31, the extension portion 32, and the mounting portion 33 are made of the same material. Furthermore, the main portion 31, the extension portion 32, and the mounting portion 33 are all the same thickness, but are not limited to this.

[0098] A long cylindrical body is formed by fixing the cover member 30 and the frame 20 together. End caps 40 are attached to each of the longitudinal ends of the cylindrical body formed by the cover member 30 and the frame 20.

[0099] In this embodiment, the end cap 40 is provided to seal the open end of the cylindrical body composed of the frame 20 and the cover member 30. In other words, the end cap 40 is attached to the cylindrical body so as to cover the open end of the cylindrical body composed of the frame 20 and the cover member 30, thereby closing the open end of the cylindrical body. This prevents dust, insects, etc. from entering the inside of the cylindrical body composed of the frame 20 and the cover member 30. Note that the end cap 40 does not completely seal the open end of the cylindrical body composed of the frame 20 and the cover member 30, and there may be a small gap between the end cap 40 and the frame 20.

[0100] The end caps 40 are provided at each of the longitudinal ends of the cover member 30. In other words, the end caps 40 are cover ends provided at the ends of the cover member 30. The end caps 40 are directly or indirectly connected to the longitudinal ends of the cover member 30. The end caps 40 and the cover member 30 may be fixed together with an adhesive or by ultrasonic welding. Alternatively, the end caps 40 and the cover member 30 may be provided with locking structures such as claws or recesses to join the end caps 40 and the cover member 30.

[0101] The end cap 40 is made of a resin material. The end cap 40 may or may not be light-transmitting. A light-transmitting end cap 40 is made of a light-transmitting resin material such as acrylic or polycarbonate, or a light-transmitting material such as glass. The end cap 40 may also be light-transmitting and diffusive. In this case, the end cap 40 may be made of the same material as the cover member 30, or it may be made of a different material from the cover member 30.

[0102] As shown in Figures 3 and 4, a spatial area S is formed on the ceiling side of the main plate portion 21 of the frame 20. In other words, a spatial area S exists between the fixture body 2 and the main plate portion 21 of the frame 20. As shown in Figure 3, the power supply unit 4 is located in this spatial area S. In other words, the power supply unit 4 is located on the ceiling side of the main plate portion 21 of the frame 20.

[0103] Furthermore, the spatial area S may also contain wires used for the LED lighting device 3. The wires used for the LED lighting device 3 include internal wires that are wired at the factory when the LED lighting device 3 is manufactured, and construction wires that are wired when the LED lighting fixture 1 is installed on the ceiling or the like. The internal wires and construction wires are placed on the ceiling side of the main plate portion 21 of the frame 20.

[0104] The internal wiring of the device includes wires connected to the power supply unit 4 and wires connecting multiple light source units 10 to each other. Among these, the wires connected to the power supply unit 4 include power supply lines connecting the power supply unit 4 and the light source units 10, power lines connecting the power supply unit 4 and the power terminal block 8, dimming control lines connecting the power supply unit 4 and the dimming terminal block (not shown), and control lines connected to the function expansion module (sensor, etc.) described later.

[0105] Furthermore, construction wiring includes power lines such as VVF cables and signal lines such as dimming signal lines. Construction wiring such as power lines and signal lines are, for example, drawn out from the ceiling and connected to designated locations on the LED lighting fixture 1 during installation. For example, power lines such as VVF cables are connected to the power terminal block 8, and dimming signal lines are connected to the dimming terminal block.

[0106] Any method can be used for wiring the internal wiring and construction wiring. For example, the internal wiring and construction wiring may be routed without being fixed to the frame 20, or they may be fixed to the frame 20 with tape or metal fittings, or they may be fixed to the frame 20 or bundled together with resin materials such as cable ties.

[0107] The LED lighting device 3, configured in this way, is housed in the recess 2a of the fixture body 2 and attached to the fixture body 2. Specifically, the LED lighting device 3 is attached to the fixture body 2 using the hook fitting 5 and elastic retaining member 6 shown in Figures 3, 5, and 6. The hook fitting 5 and elastic retaining member 6 are fixed to the frame 20.

[0108] As shown in Figure 3, the hook fitting 5 is positioned on the ceiling side of the main plate portion 21 of the frame 20. The hook fitting 5 is a sheet metal plate member. The hook fitting 5 is fixed to the end of the main plate portion 21 of the frame 20. For example, the hook fitting 5 is fixed to the main plate portion 21 of the frame 20 by fixing members such as screws, and extends outward from the main plate portion 21 of the frame 20. The hook fitting 5 is hooked onto the fixture body 2. In this embodiment, a slit 2c (see Figure 2) is provided on the inner wall surface of the recess 2a of the fixture body 2, and the hook fitting 5 is hooked onto this slit 2c.

[0109] The elastic retaining member 6 is positioned on the ceiling side of the main plate portion 21 of the frame 20. The elastic retaining member 6 is, for example, a spring such as a kick spring. The elastic retaining member 6 is fixed to the end of the main plate portion 21 on the ceiling side of the main plate portion 21 of the frame 20. The elastic retaining member 6 is fixed to the side opposite to the hook fitting 5 in the width direction of the main plate portion 21 of the frame 20. The elastic retaining member 6 is fixed to the main plate portion 21 of the frame 20 by fixing members such as screws. Specifically, the elastic retaining member 6 is fixed to a retaining fitting 6c (see Figure 6) which is fixed to the frame 20 by mounting screws. The elastic retaining member 6 is detachably attached to the fixture body 2. In this embodiment, the elastic retaining member 6 is detachably locked to a receiving fitting 7 which is fixed to the fixture body 2.

[0110] As shown in Figure 2, the hook fittings 5 ​​and elastic retaining members 6 are provided in pairs at both ends of the frame 20 in the longitudinal direction, but are not limited to this arrangement. Also, the hook fittings 5 ​​and elastic retaining members 6 are provided at positions opposite to the main plate portion 21 of the frame 20 in the short direction, but are not limited to this arrangement.

[0111] Here, the method for attaching the LED lighting device 3 to the fixture body 2 will be explained using Figure 9. Figure 9 is a diagram illustrating the method for attaching the LED lighting device 3 to the fixture body 2 in the LED lighting fixture 1 according to the embodiment.

[0112] When attaching the LED lighting device 3 to the fixture body 2 installed on the ceiling 100, first, as shown in Figure 9(a), the hook fitting 5 is hooked onto the slit 2c (see Figure 2) provided in the fixture body 2 to suspend the LED lighting device 3 in a cantilevered state, and one end of the elastic retaining member 6, which is a kick spring, is locked to the receiving fitting 7 fixed to the fixture body 2.

[0113] Next, as shown in Figure 9(b), the LED lighting device 3 is pushed into the recess 2a of the fixture body 2 by rotating the LED lighting device 3 using the hook fitting 5 as a pivot point while pushing the hook fitting 5 into the back of the slit 2c.

[0114] Then, by rotating the LED lighting device 3 and pushing it into the recess 2a of the fixture body 2, the LED lighting device 3 can be fitted into the recess 2a of the fixture body 2, as shown in Figure 9(c). This allows the LED lighting device 3 to be attached to the fixture body 2.

[0115] To remove the LED lighting device 3 from the fixture body 2, the reverse of the above procedure can be performed. For example, the LED lighting device 3 can be removed from the fixture body 2 by pulling it down and rotating it.

[0116] As described above, the LED lighting device 3 and LED lighting fixture 1 according to this embodiment comprises at least a frame 20 and a cover member 30. The frame 20 has a first plate portion 22a and / or a second plate portion 22b, which are plate portions located on both sides of the main plate portion 21 in the short direction of the frame 20 and located on the floor side (first direction side) of the main plate portion 21. The cover member 30 has a main portion 31 having a surface facing the LED 12 and an extended portion 32 that protrudes from the inner surface of the main portion 31 toward the LED 12. The extended portion 32 has a first surface portion 32b1 and / or a second surface portion 32b2, which are surface portions that can abut against the first plate portion 22a and / or the second plate portion 22b of the frame 20.

[0117] As described above, in the LED lighting device 3 according to this embodiment, the first plate portion 22a and / or the second plate portion 22b of the frame 20 and the first surface portion 32b1 and / or the second surface portion 32b2 of the cover member 30 are configured to contact each other over a surface rather than at a point. As a result, the frame 20 and the cover member 30 are firmly fixed together, so that an LED lighting device 3 with high strength can be obtained. Specifically, sufficient strength can be ensured so that the LED lighting device 3 does not deform when it is attached to or removed from the fixture body 2.

[0118] Furthermore, the LED lighting device 3 and LED lighting fixture 1 according to this embodiment include at least a frame 20 and a cover member 30, the frame 20 having a protruding portion 22 that projects toward the floor, and the cover member 30 having an extended portion 32 that extends toward the LED 12 side from a position toward the ceiling (second direction) than the part of the protruding portion 22 on the inner surface of the main portion 31 that is located furthest toward the floor (first direction), so as to cover at least a part of the protruding portion 22.

[0119] If a protruding portion 22 is provided on the frame 20 that projects toward the floor, the light from the LED 12 will have difficulty reaching the outer end 31a of the cover member 30, and the outer end 31a of the cover member 30 will be darker than the central part in the width direction (short side direction) of the cover member 30. However, by forming the extended portion 32 as described above, as shown in Figure 10, a spatial area can be formed near the outer end 31a of the cover member 30 that extends outward toward the ceiling beyond the protruding portion 22 of the frame 20. As a result, even if a protruding portion 22 is provided on the frame 20 that projects toward the floor, the light emitted from the LED 12 that does not pass through the main part 31 of the cover member 30 but is reflected on the inner surface of the main part 31 can be allowed to wrap around to the spatial area formed near the outer end 31a of the cover member 30. As a result, the light emitted from the LED 12 can be sufficiently distributed to the outer end 31a of the main portion 31 of the cover member 30, so that the area near the outer end 31a of the main portion 31 of the cover member 30 can be sufficiently illuminated. Therefore, the main portion 31 of the cover member 30 can be illuminated over its entire width (X-axis direction), so that the edges of the cover member 30 in the width direction do not become dark. In other words, the darkness at the edges of the cover member 30 in the width direction caused by the protrusion 22 of the frame 20 can be reduced.

[0120] In particular, in the LED lighting device 3 according to this embodiment, the surface of the extended portion 32 of the cover member 30 can come into contact with the plate portion provided on the protruding portion 22 of the frame 20, so that the frame 20 and the cover member 30 are firmly fixed together. Therefore, the LED lighting device 3 according to this embodiment makes it possible to achieve both a reduction in darkness at the outer end 31a of the cover member 30 and high strength.

[0121] Furthermore, the LED lighting device 3 and LED lighting fixture 1 according to this embodiment include at least a frame 20 and a cover member 30, and the extended portion 32 of the cover member 30 has an outward extended portion 32a and an inward extended portion 32b, and the outward extended portion 32a has a portion that overlaps with a gap G between the cover member 30 and the inner surface of the recess 2a of the fixture body 2 in the Z-axis direction.

[0122] This configuration allows sufficient illumination to reach the vicinity of the outer end 31a of the main portion 31 of the cover member 30. As a result, the main portion 31 of the cover member 30 can be illuminated over its entire width (X-axis direction). Therefore, since the main portion 31 of the cover member 30 can be illuminated over its entire width (X-axis direction), it is possible to suppress the darkening of the ends of the cover member 30 in the width direction.

[0123] In particular, the LED lighting device 3 in this embodiment has a structure in which the ends of the cover member 30 in the width direction tend to become dark due to the projection 22 that protrudes towards the floor being provided on the frame 20. However, by making the outer projection 32a of the extension 32 overlap with the gap G, the darkening of the ends of the cover member 30 in the width direction can be effectively suppressed.

[0124] Furthermore, in the LED lighting device 3 according to this embodiment, as described above, a spatial region is formed near the outer end 31a of the cover member 30, extending outward from the protruding portion 22 of the frame 20 towards the ceiling. This allows the light emitted from the LED 12 to wrap around into this spatial region. Therefore, the perception that the outer end 31a of the main portion 31 of the cover member 30 is dark can be further suppressed.

[0125] (modified version) The following describes modified versions of the LED lighting device and LED lighting fixture with reference to the drawings. These modified versions can also achieve the same effects as the above embodiment. The following descriptions of the modified versions will focus on the differences from the above embodiment.

[0126] (Variation 1) Figure 11A is a cross-sectional view of the LED lighting device 3A according to Modification 1.

[0127] In the LED lighting device 3 of the above embodiment, the cover member 30 was made of one type of resin material, but in the LED lighting device 3A according to this modified example, the cover member 30A is made of two or more types of materials. Specifically, the cover member 30A is made of two types of materials. In this modified example, at least a part of the extended portion 32A of the cover member 30A is made of a different material from the main portion 31.

[0128] As shown in Figure 11A, in the modified LED lighting device 3A, the main part 31 and mounting part 33 and the extension part 32A are made of different resin materials. Specifically, the main part 31, the mounting part 33, the outer extension part 32a of the extension part 32A, the second surface 32b2 of the inner extension part 32b of the extension part 32A, and the first surface 32b1 of the inner extension part 32b of the extension part 32A are made of different resin materials.

[0129] In this case, for example, the main portion 31, the mounting portion 33, the outer extension portion 32a of the extension portion 32A, and the second surface portion 32b2 of the inner extension portion 32b of the extension portion 32A can be made of a translucent resin material, and the first surface portion 32b1 of the inner extension portion 32b of the extension portion 32A can be made of a white or milky white resin material. Such a cover member 30 can be formed by two-color molding.

[0130] In this way, by making at least a portion of the inner extension portion 32b of the extension portion 32A out of a white or milky white resin material, the inner extension portion 32b can be given a reflective function. As a result, the light that reaches the inner extension portion 32b of the extension portion 32A from the light emitted from the LED 12 can be reflected by the inner extension portion 32b and incident on the main portion 31. In this case, as in this modified example, by tilting the first surface portion 32b1 of the inner extension portion 32b diagonally toward the ceiling, the light from the LED 12 can be focused in the vertical direction, and the light extraction efficiency of the LED lighting device 3A can be improved. In this way, by giving the inner extension portion 32b a reflective function, the illuminance directly below the LED lighting fixture can be improved, and the number of LED lighting fixtures 1 to be installed can be reduced.

[0131] Furthermore, while the light extraction efficiency can be improved by making the reflectivity of the extension portion 32A higher than that of the main portion 31, as described above, the reflectivity of the extension portion 32A may also be made higher than that of the frame 20. This improves the light extraction efficiency and makes the frame 20 paintless. In other words, there is no need to apply a reflective coating to the frame 20. Alternatively, the reflectivity of the extension portion 32A may also be made higher than that of the substrate 11. This improves the light extraction efficiency and makes the substrate 11 paintless. In other words, there is no need to form a white paint resist on the surface of the substrate 11 for reflective purposes.

[0132] Furthermore, in Figure 11A, the boundary of the two-color molding in the cover member 30A is defined as the connection between the first surface portion 32b1 and the second surface portion 32b2 of the inner extension portion 32b of the extension portion 32A, but this is not limited to this. For example, as shown in Figures 11B and 11C, the boundary of the two-color molding in the cover member 30A may be located in the middle of the first surface portion 32b1 of the inner extension portion 32b of the extension portion 32A (for example, the portion facing the vertical plate portion 11c of the protruding portion 22 or the tip portion of the first surface portion 32b1). Also, as shown in Figures 11D and 11E, the boundary of the two-color molding in the cover member 30A may be the connection between the outer extension portion 32a and the inner extension portion 32b of the extension portion 32A. In this case, as shown in Figure 11D, the mounting portion 33 may be made translucent and integrated with the outer extension portion 32a of the extension portion 32A, or as shown in Figure 11E, the mounting portion 33 may be made white or milky white and integrated with the inner extension portion 32b of the extension portion 32A. Also, as shown in Figure 11F, the boundary of the two-color molding in the cover member 30A may be the connection portion between the main portion 31 and the extension portion 32A. In this case, it is preferable to make the entire outer extension portion 32a and inner extension portion 32b of the extension portion 32A, together with the mounting portion 33, white or milky white.

[0133] In addition, in Figures 11A to 11F, different resin materials may be formed in layers by two-color molding. For example, the extended portion 32A of the cover member 30A may have a laminated structure of a first layer on the ceiling side and a second layer on the floor side, and the first and second layers may be formed by two-color molding. In other words, the extended portion 32A may be made of two colors and two layers, and the cover member 30A may be formed by extrusion molding (two-layer extrusion).

[0134] (Modification 2) Figure 12A is a cross-sectional view of the LED lighting device 3B according to modified example 2.

[0135] In the LED lighting device 3 of the above embodiment, the tip of the extended portion 32 of the cover member 30 was in contact with the substrate 11. However, as shown in Figure 12A, in the LED lighting device 3B of this modified example, the tip of the extended portion 32B of the cover member 30B is in contact with the frame 20. Specifically, the tip of the extended portion 32B is in contact with the main plate portion 21 of the frame 20.

[0136] This configuration improves the strength of the LED lighting device 3B and prevents insects from entering the inside of the cover member 30B.

[0137] Furthermore, in Figure 12A, the base portion of the inner extension portion 32b of the extension portion 32B of the cover member 30B was connected to the connection portion between the outer extension portion 32a and the mounting portion 33, but this is not limited to this.

[0138] For example, as shown in Figure 12B, the base portion of the inner extension 32b of the extension 32B in the cover member 30B may be connected to a part of the mounting portion 33 other than the end of the mounting portion 33, rather than to the end of the mounting portion 33. In other words, the inner extension 32b of the extension 32B may extend from the middle of the mounting portion 33.

[0139] Furthermore, as shown in Figure 12C, the base portion of the inner extension 32b of the extension 32B in the cover member 30B may be connected to a part of the outer extension 32a other than the end of the outer extension 32a, rather than to the end of the outer extension 32a. In other words, the inner extension 32b of the extension 32B may extend from the middle of the outer extension 32a.

[0140] Furthermore, as shown in Figure 12D, the base portion of the inner extension 32b of the extension 32B in the cover member 30B may be connected to the main part 31, rather than to the outer extension 32a or the mounting part 33. In other words, the inner extension 32b of the extension 32B may extend from the inner surface of the main part 31. In this case, as shown in Figure 12D, the extension 32B may consist only of the inner extension 32b without having an outer extension 32a.

[0141] Figures 12A to 12C may be applied to the above embodiment and other modified examples.

[0142] (Variation 3) Figure 13 is a cross-sectional view of the LED lighting device 3C according to modified example 3.

[0143] In the LED lighting device 3 of the above embodiment, the second plate portion 22b of the protruding portion 22 of the frame 20 was inclined. However, as shown in Figure 13, in the LED lighting device 3C according to this modified example, the second plate portion 22b of the protruding portion 22C of the frame 20C is formed parallel to the main plate portion 21, similar to the first plate portion 22a. However, in the protruding portion 22C, the first plate portion 22a and the second plate portion 22b are located at different height positions, and the protruding portion 22C is formed in a stepped manner. The second plate portion 22b of the protruding portion 22C is located closer to the floor than the main plate portion 21.

[0144] Furthermore, in the LED lighting device 3 of the above embodiment, the tip of the extended portion 32 of the cover member 30 was in contact with the substrate 11. However, as shown in Figure 13, in the LED lighting device 3C of this modified example, the tip of the extended portion 32C of the cover member 30C is not in contact with the substrate 11, and a gap exists between the tip of the extended portion 32C and the substrate 11. In other words, the extended portion 32C is formed so that its tip is spaced apart from the substrate 11.

[0145] With this configuration, even if the adhesive used to fix the substrate 11 to the frame 20C peels off, the substrate 11 will be supported by the extension 32C, preventing it from falling. Furthermore, if the extension 32C is given a reflective function, the light extraction efficiency can be further improved. In addition, by separating the extension 32C from the substrate 11, any noise caused by contact between the extension 32C and the substrate 11 can be eliminated.

[0146] (Modification 4) Figure 14 is a cross-sectional view of the LED lighting device 3D according to Modification 4.

[0147] In the LED lighting device 3 of the above embodiment, the tip of the extended portion 32 of the cover member 30 was in contact with the substrate 11. However, as shown in Figure 14, in the LED lighting device 3D of this modified example, the tip of the extended portion 32D of the cover member 30D is in contact with the frame 20D. Specifically, the tip of the extended portion 32D is in contact with the main plate portion 21 of the frame 20D. In addition, in the cover member 30D of this modified example, an extended portion 33b is provided on the mounting portion 33D. The extended portion 33b extends from near the end of the side plate portion 23 of the frame 20D toward the ceiling.

[0148] This configuration improves the strength of the cover member 30D, thereby further enhancing the strength of the LED lighting device 3D.

[0149] In the LED lighting device 3 of the above embodiment, the protruding portion 22 of the frame 20 had a first plate portion 22a which is a parallel plate portion and a second plate portion 22b which is an inclined plate portion, but it is not limited to this. As shown in the LED lighting device 3D in Figure 14, the protruding portion 22D of the frame 20D may have only the inclined plate portion among the parallel plate portion and the inclined plate portion.

[0150] (Variation 5) Figures 15A and 15B are cross-sectional views of the LED lighting device 3E according to Modification 5. Figure 15A shows a cross-section when the portion without the power supply device 4 is cut, and Figure 15B shows a cross-section when the portion with the power supply device 4 is cut.

[0151] As shown in Figures 15A and 15B, the LED lighting device 3E according to this modified example has a configuration in which a protrusion 34 and a projection 35 are formed on the extended portion 32 of the cover member 30E, compared to the LED lighting device 3 according to the above embodiment.

[0152] The protrusion 34 extends from the extension 32 toward the frame 20 and functions as a restricting part that restricts the movement of the frame 20. In this modified example, the protrusion 34 is formed in a position where it can abut against the side surface of the third plate portion 22c of the protrusion 22 of the frame 20. For example, the protrusion 34 is flat and is formed to extend in the longitudinal direction of the cover member 30E. Also in this modified example, the protrusion 34 is formed parallel to the third plate portion 22c.

[0153] By providing the protrusion 34 on the cover member 30E in this way, the protrusion 34 will contact the projection 22 when the cover member 30E or the frame 20 tries to move, thus preventing the cover member 30E or the frame 20 from moving. For example, when attaching the LED lighting device 3E to the fixture body 2 (not shown), stress may be applied to the cover member 30E, causing it to be pushed open. However, by providing the protrusion 34, when the cover member 30E is opened, the protrusion 34 will contact the projection 22 of the frame 20. This makes it difficult for the cover member 30E to come off the frame 20, even if the cover member 30E and the frame 20 are not fixed together with screws. In addition, by providing the protrusion 34, it is also possible to align the frame 20 and the cover member 30E when assembling the LED lighting device 3E.

[0154] The convex portion 34 and the protruding portion 22 may or may not be in contact. In other words, there may be a gap between the convex portion 34 and the protruding portion 22. In this case, the gap between the convex portion 34 and the protruding portion 22 should be smaller than the gap between the side plate portion 23 of the frame 20 and the mounting portion 33 of the cover member 30E. This makes it even more difficult for the cover member 30E to come off the frame 20.

[0155] The projection 35 is formed in a position on the extended portion 32 that can contact the frame 20. Specifically, the projection 35 is formed on the surface of the inner extended portion 32b of the extended portion 32. The projection 35 is also formed in a position that can contact the surface of the first plate portion 22a of the protruding portion 22 of the frame 20. As an example, the projection 35 is formed as a ridge that extends in the longitudinal direction of the cover member 30E.

[0156] By providing the projection 35 in this manner, it is possible to reduce the noise caused by repeated contact and separation between the frame 20 and the cover member 30E due to vibration, etc. In this modified example, the top of the projection 35 abuts against the surface of the first plate portion 22a of the protruding portion 22. Furthermore, the projection 35 for reducing noise may be formed on the first plate portion 22a of the protruding portion 22 of the frame 20, rather than on the extended portion 32. The projection 35 may be formed on one or both of the frame 20 and the cover member 30E.

[0157] Furthermore, in the modified LED lighting device 3E, the cover member 30E also has a projection 36. The projection 36 is formed on the ceiling-side surface of the outer extension portion 32a of the extension portion 32. As a result, when the LED lighting device 3E is housed in the recess 2a of the fixture body 2 (not shown), the projection 36 and the open edge 2a1 of the recess 2a come into contact, thereby reducing abnormal noise generated between the cover member 30E and the fixture body 2 due to vibration, etc.

[0158] Furthermore, the protrusions 35 and 36 for reducing abnormal noise may be formed in locations other than those mentioned above on the cover member 30E. For example, they may be formed at the contact portion (mounting portion 33, etc.) of the cover member 30E with the side plate portion 23 of the frame 20, or at the contact portion (mounting portion 33, etc.) of the cover member 30E with the inner wall surface of the recess 2a of the fixture body 2. Also, the protrusions 35 and 36 do not have to be formed along the entire length of the cover member 30E in the longitudinal direction. For example, the protrusions 35 and 36 may be formed intermittently in multiple locations along the longitudinal direction of the cover member 30E. The contact between the protrusions 35 and 36 and the contact surface with which the protrusions 35 and 36 can come into contact may be surface contact, line contact, or point contact. In this case, the effect of reducing abnormal noise is highest in the case of point contact, followed by line contact, and then surface contact.

[0159] Furthermore, as shown in Figure 15A, the LED lighting device 3E according to this modified example further includes a fitting 60. The fitting 60 is positioned on the ceiling side of the frame 20. The fitting 60 has a recess that covers the mounting portion 33 of the cover member 30E. This configuration prevents the cover member 30E from coming off. The fitting 60 may be attached to the mounting portion 33 of the cover member 30E by crimping, for example, or to the frame 20 by screws.

[0160] In Figure 15A, the protrusion 34 of the cover member 30E was formed parallel to the third plate portion 22c of the protruding portion 22, but this is not limited to this configuration.

[0161] For example, as shown in the LED lighting device 3F in Figure 16, the protrusion 34F of the cover member 30F may be formed to be inclined with respect to the third plate portion 22c of the protruding portion 22. In Figure 16, the protrusion 34F is formed to be tilted toward the substrate 11. This makes it easier to fit the cover member 30F and the frame 20 together compared to the case in Figure 15.

[0162] In this case, as shown in Figure 17, the protrusion 34G of the cover member 30G may be formed to have a vertical portion and an inclined portion. This allows the cover member 30G and the frame 20 to be easily fitted together, and also makes it difficult for the cover member 30G to come off the frame 20.

[0163] Furthermore, as shown in Figure 18, the protrusion 34H of the cover member 30H may be formed to tilt toward the third plate portion 22c of the protrusion 22C of the frame 20C. This makes it even more difficult for the cover member 30H to detach from the frame 20.

[0164] In this case, as shown in Figure 19, the protrusion 34I of the cover member 30I may be formed to bend so as to tilt toward the third plate portion 22c of the protrusion 22C of the frame 20C and to have two inclined portions. This makes it difficult for the cover member 30I to come off the frame 20 and allows the cover member 30I and the frame 20 to be easily fitted together.

[0165] Furthermore, as shown in Figure 20, the protrusion 34J of the cover member 30J may be formed to have a vertical portion and an inclined portion. Specifically, the protrusion 34J is formed to bend back toward the third plate portion 22c of the projection 22C. This makes it difficult for the cover member 30J to come off the frame 20, and also allows the cover member 30J and the frame 20 to be easily fitted together.

[0166] (Experimental variation 6) Figure 21A is a cross-sectional view of the LED lighting device 3K according to modified example 6.

[0167] In the LED lighting device 3 of the above embodiment, the extended portion 32 of the cover member 30 extended beyond the protruding portion 22 of the frame 20 to a position where it overlapped with the substrate 11 and the main plate portion 21 of the frame 20, but is not limited to this.

[0168] For example, as shown in Figure 21, the LED lighting device 3K may be formed such that the extended portion 32K of the cover member 30K extends only to the position of the protruding portion 22 of the frame 20.

[0169] Note that in Figure 21A, the end face of the tip of the extended portion 32K of the cover member 30K was not in contact with the main portion 21 of the frame 20, but this is not limited to this. For example, as shown in Figure 21B, the end face of the tip of the extended portion 32K of the cover member 30K may be in contact with the main portion 21 of the frame 20. This makes it less likely for the cover member 30K to come off. Furthermore, in the cases of Figures 12A to 12D, there is a boundary between the double-cover portion of the cover member 30K, where the extended portion 32K and the main portion 31 are located (an area where insects are not noticeable even if they enter and accumulate inside the cover member 30K through the gap) and the single-cover portion of the cover member 30K, where only the main portion 31 is located (an area where insects are noticeable if they enter and accumulate inside the cover member 30K). Therefore, it was difficult to attach mounting structures near this boundary. However, by using the method shown in Figure 21B, the area where the substrate 11 can be placed on the main portion 21 of the frame 20 (substrate mounting portion) can be made wider compared to the cases of Figures 12A to 12D, making it easier to attach mounting structures such as the power supply unit 4 and metal fittings. It is possible.

[0170] Furthermore, in Figure 12B, the side surface of the tip of the extended portion 32K of the cover member 30K was in contact with the protruding portion 22 of the frame 20, but this is not limited to this. Specifically, as shown in Figure 21C, the side surface of the tip of the extended portion 32K of the cover member 30K does not have to be in contact with the protruding portion 22 of the frame 20. In other words, there may be a small gap (space) between the side surface of the tip of the extended portion 32K of the cover member 30K and the protruding portion 22 of the frame 20. This makes it easier to fit the cover member 30K onto the frame 20.

[0171] (Example 7) Figure 22 is a cross-sectional view of the LED lighting device 3L according to modified example 7.

[0172] In the LED lighting device 3 of the above embodiment, the extended portion 32 of the cover member 30 extended toward the substrate 11 and the LED 12 so as to be inclined with respect to the substrate 11, but is not limited to this.

[0173] For example, as shown in Figure 22, the extended portion 32L of the cover member 30L may extend parallel to the substrate 11 toward the LED 12.

[0174] (Variation 8) Figure 23 is a cross-sectional view of the LED lighting device 3M according to modified example 8.

[0175] In the LED lighting device 3 of the above embodiment, the extended portion 32 of the cover member 30 extended from the outer end 31a of the main portion 31 toward the LED 12, but is not limited to this.

[0176] For example, as shown in Figure 23, the extended portion 32M of the cover member 30M may extend toward the LED 12 from a position away from the outer end 31a of the main portion 31.

[0177] (Extreme variation 9) Figure 24 is a cross-sectional view of the LED lighting device 3N according to modified example 9.

[0178] In the LED lighting device 3 of the above embodiment, the extended portion 32 of the cover member 30 was formed along the protrusion 22 in a shape that matches the shape of the protrusion 22 of the frame 20, but it is not limited to this.

[0179] For example, as shown in Figure 24, the extended portion 32N of the cover member 30N may be formed along the protruding portion 22C in a shape that does not match the shape of the protruding portion 22C of the frame 20C. In other words, there may be portions of the cover member 30N and the frame 20C where the extended portion 32N and the protruding portion 22C are not formed parallel to each other.

[0180] (Variation 10) Figure 25 is a cross-sectional view of the LED lighting device 3O according to modified example 10.

[0181] In the LED lighting device 3 of the above embodiment, the protruding portion 22 of the frame 20 had a shape in which the second plate portion 22b was located outside the first plate portion 22a. However, as shown in Figure 25, in the LED lighting device 3O of this modified example, the protruding portion 22O of the frame 20O has a shape in which the second plate portion 22b is located inside the first plate portion 22a. In this modified example, the protruding portion 22O does not have a third plate portion 22c which is a vertical plate portion.

[0182] Furthermore, in the LED lighting device 3O in this modified example, as in Modification Example 8 above, the extended portion 32O of the cover member 30O is not connected to the outer end 31a of the main portion 31, but extends toward the LED 12 from a position away from the outer end 31a of the main portion 31. Also, in this modified example, the extended portion 32O has a convex portion 34 and a projection 35, as in Modification Example 5 above.

[0183] In Figure 25, the protrusion 34 is inclined to tilt toward the substrate 11, but this is not limited to this. For example, as in the LED lighting device 3P shown in Figure 26, the protrusion 34P provided on the extended portion 32O of the cover member 30P may be inclined to tilt toward the protruding portion 22O.

[0184] (Variation 11) Figure 27 is a cross-sectional view of the LED lighting device 3Q according to modified example 11.

[0185] In the LED lighting device 3 of the above embodiment, the first plate portion 22a of the protruding portion 22 of the frame 20 was a parallel plate portion parallel to the substrate 11 and the main plate portion 21, but it is not limited to this.

[0186] For example, as shown in Figure 27 of the LED lighting device 3Q, the first plate portion 22a of the protruding portion 22Q of the frame 20Q may be an inclined plate portion that is inclined with respect to the substrate 11 and the main plate portion 21. Specifically, the protruding portion 22Q is formed to bend between the first plate portion 22a and the second plate portion 22b. In this modified example, the protruding portion 22Q does not have a third plate portion 22c which is a vertical plate portion.

[0187] (Example 12) Figure 28 is a cross-sectional view of the LED lighting device 3R according to modified example 12.

[0188] In the LED lighting device 3 described above, the protruding portion 22 of the frame 20 was composed only of a flat plate portion, but this is not limited to that.

[0189] For example, as shown in the LED lighting device 3R in Figure 28, the protruding portion 22R of the frame 20R may be composed of a curved plate portion that curves in an arc shape. In other words, the plate portion that constitutes the protruding portion 22R is not limited to a flat plate, but may also be a curved plate.

[0190] Furthermore, as shown in Figure 28, the extended portion 32R of the cover member 30R may be shaped to conform to the curved projection 22R. Specifically, the extended portion 32R may be shaped to fit the curved shape of the projection 22R. Thus, the shape of the surface portion of the extended portion 32R that can abut the plate portion of the projection 22R is not limited to a flat surface, but may also be a curved surface.

[0191] (Example 13) Figure 29 is a cross-sectional view of the LED lighting fixture 1S and LED lighting device 3S according to the modified example 13.

[0192] In the modified LED lighting fixture 1S, a through hole 2d is provided on the inner wall surface of the recess 2a of the fixture body 2.

[0193] Furthermore, in the LED lighting device 3S according to this modified example, a through hole 24 is provided in the protruding portion 22 of the frame 20S. Specifically, the through hole 24 is provided in the third plate portion 22c that constitutes the side wall on the LED 12 side of the protruding portion 22. Note that the extended portion 32S of the cover member 30S extends only to the upper surface of the protruding portion 22 of the frame 20S. In other words, the extended portion 32S does not cover the third plate portion 22c of the protruding portion 22.

[0194] In this configuration, the space area enclosed by the cover member 30S and the frame 20S communicates with the space area S on the ceiling side of the frame 20S in the recess 2a via the through hole 24. In addition, the internal space (space area S) of the recess 2a communicates with the external space of the recess 2a via the through hole 2d. As a result, the heat generated by the LED 12 can be effectively dissipated by natural convection through the through holes 24 and 2d. This prevents heat from accumulating in the space area enclosed by the cover member 30S and the frame 20S.

[0195] (Other variations) Although the LED lighting fixture and LED lighting device according to the present invention have been described above based on embodiments and modifications, the present invention is not limited to these embodiments and modifications.

[0196] In the above embodiments and modifications, various shapes of frames used in the LED lighting device have been illustrated, but frames of the shapes described below may also be used. Note that some of the frames described below already have the shapes mentioned above. Furthermore, although the shapes of the frames described below differ, for convenience, the same reference numerals as in the above embodiments are used. Also, the features of the frames described below may be applied to each other, or to the above embodiments and modifications.

[0197] First, regarding the length of the side plate portion 23, a frame of any length can be used. Specifically, as shown in Figure 30, a frame 201 may be used in which the tip of the side plate portion 23 is positioned closer to the ceiling than the main plate portion 21; as shown in Figure 31, a frame 202 may be used in which the tip of the side plate portion 23 is positioned at the same level as the main plate portion 21; or as shown in Figure 32, an I-shaped frame 203 without a side plate portion 23 may be used. Note that the longer the length of the side plate portion 23, the higher the strength of the frame can be.

[0198] Furthermore, the shape of the protruding portion 22 of the frame 20 can also be any shape of frame that can be used.

[0199] For example, as shown in Figure 33, a frame 204 having a projection 22 with an inclined plate portion that slopes outward may be used; as shown in Figure 34, a frame 205 having a projection 22 with an inclined plate portion that slopes inward may be used; as shown in Figure 35, a frame 206 having a projection 22 with a V-shaped (triangular) cross-section having an inclined plate portion that slopes outward and an inclined plate portion that slopes outward may be used; or as shown in Figure 36, a frame 207 having a projection 22 with an inclined plate that slopes outward, an inclined plate portion that slopes outward and a vertical plate portion may be used.

[0200] Furthermore, as shown in Figure 37, a frame 208 having a protrusion 22 made of a curved plate portion may be used; as shown in Figure 38, a frame 209 having a protrusion 22 with an inclined plate portion on the inside may be used; as shown in Figure 39, a frame 210 having a protrusion 22 with an inclined plate portion on the outside may be used; and as shown in Figure 40, a frame 211 having a protrusion 22 with inclined plate portions on both the outside and inside may be used.

[0201] Furthermore, as shown in Figures 41 to 43, frames 212, 213, and 214 having protruding portions 22 without inclined plate sections may also be used. The protruding portions 22 of frames 212, 213, and 214 shown in Figures 41 to 43 are all formed in a stepped shape. Note that in frame 212 shown in Figure 41, the tip of the side plate section 23 is positioned closer to the ceiling than the main plate section 21. The frames are formed in such a way that the tip of the side plate portion 23 is at the position of the main plate portion 21 in the frame 213 shown in Figure 42, while the frame 214 shown in Figure 43 has a shape in which the side plate portion 23 is not formed.

[0202] In this case, the frames 215 to 221 shown in Figures 44 to 50 can be used as frames having stepped projections 22. Specifically, the projection 22 of frame 215 shown in Figure 44 has a parallel plate section at the same height as the main plate section 21 and a parallel plate section at a different height from the main plate section 21. The projection 22 of frame 216 shown in Figure 45 each has two parallel plate sections at different heights from the main plate section 21. The projection 22 of frame 217 shown in Figure 46 has a parallel plate section and an inclined plate section located inside the parallel plate section. The projection 22 of frame 218 shown in Figure 47 has a parallel plate section and an inclined plate section located outside the parallel plate section and inclined inward. The projection 22 of frame 219 shown in Figure 48 has an inclined plate section that inclins outward and an inclined plate section that inclins inward. The projection 22 of the frame 220 shown in Figure 49 has a parallel plate section and a pair of inclined plate sections located on both sides of the parallel plate section. The projection 22 of the frame 221 shown in Figure 50 has two parallel plate sections at different height positions and an inclined plate section located inside the parallel plate section.

[0203] Furthermore, as shown in Figure 51, reinforcing ribs 21b may be formed at the boundary between the main plate portion 21 and the protruding portion 22, as in the frame 222 shown in Figure 51. Alternatively, as shown in Figure 52, even if the protruding portion 22 is not formed, reinforcing ribs (reinforcing beads) 21c and 21d may be formed on both sides of the main plate portion 21. This ensures the strength of the frame even in low-height frames where the side plate portion 23 is short, or where the side plate portion 23 is not formed, or where the protruding portion 22 is not formed. The reinforcing ribs 21b, 21c, and 21d can be formed by press working.

[0204] Furthermore, in the above embodiments, the outwardly extending portion 32a may be made part of the main portion 31. In this case, the extension portion 32 will consist only of, for example, the inwardly extending portion 32b, and will extend inward from the outwardly extending portion 32a, which is part of the main portion 31, toward the cover member 30.

[0205] Furthermore, in the above embodiments, the LED lighting device 3 is attached to the fixture body 2 by rotating the LED lighting device 3, but this is not limited to this. In other words, the LED lighting device 3 may be attached to the fixture body 2 without rotating it. Specifically, the LED lighting device 3 may be attached to the fixture body 2 by hooking a leaf spring or the like provided on the LED lighting device 3 onto the fixture body 2 installed on the ceiling, and moving the LED lighting device 3 vertically so as to move it parallel to the fixture body 2. In this case, the LED lighting device 3 can be attached to the fixture body 2 by pushing the LED lighting device 3 vertically into the recess 2a of the fixture body 2 and fitting it in place.

[0206] Furthermore, in the above embodiments, an SMD type LED element with an LED chip mounted in a package was used as the LED 12, and the light-emitting module consisting of the substrate 11 and the LED 12 was an SMD type LED module, but this is not limited to this. For example, the light-emitting module consisting of the substrate 11 and the LED 12 may be a COB (Chip On Board) type LED module. In this case, the LED chip (bare chip) itself can be used as the LED 12, and a plurality of LEDs 12 (LED chips) can be arranged linearly on the substrate 11, and the plurality of LEDs 12 can be sealed together or individually with a sealing member (for example, a phosphor-containing resin).

[0207] Furthermore, although a cover member 30 having both diffusive and light-transmitting properties was used in the above embodiments, the invention is not limited to this. For example, instead of the cover member 30, a light-transmitting cover having only light-transmitting properties may be used. In this case, the light-transmitting cover would allow the other side to be seen through. You can also use a transparent cover with a very high light transmittance.

[0208] Furthermore, the present invention also includes forms obtained by applying various modifications to the above embodiments and modifications that a person skilled in the art could conceive, and forms realized by arbitrarily combining the components and functions of the embodiments and modifications without departing from the spirit of the present invention. In addition, the present invention also includes arbitrary combinations of one or more components from each of the multiple claims described in the claims at the time of filing the present application. Furthermore, when the cited claims described in the claims at the time of filing the present application are made into a multi-claim or multi-multi-claim that cites any multiple claims, the invention also includes the invention of a combination of all claims included in that multi-claim or multi-multi-claim. [Explanation of Symbols]

[0209] 1. 1S LED lighting fixture 2. Main body of the device 2a Recess 2a1 Opening edge 3, 3A, 3B, 3C, 3D, 3E, 3F, 3G, 3H, 3I, 3J, 3K, 3L, 3M, 3N, 3O, 3P, 3Q, 3R, 3S LED lighting equipment 11 circuit boards 12 LED Frames 20, 20C, 20D, 20O, 20Q, 20R, 20S, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223 21 Main plate part 22, 22C, 22D, 22O, 22Q, 22R protrusion Cover components 30, 30A, 30B, 30C, 30D, 30E, 30F, 30G, 30H, 30I, 30J, 30K, 30L, 30M, 30N, 30O, 30P, 30R, 30S 31 Main part 31a Outer edge 32, 32A, 32B, 32C, 32D, 32K, 32L, 32M, 32N, 32O, 32R, 32S extension section 32a Extended section

Claims

1. An LED lighting device housed in a recess in the main body of the fixture, A circuit board with LEDs arranged on it, A long frame having a main plate portion to which the aforementioned substrate is attached, The system comprises a cover member attached to the frame so as to cover the LED, When the direction of the light-emitting side of the LED is defined as the first direction, with respect to the main plate portion, and the direction opposite to the first direction is defined as the second direction, The frame has protrusions located on both sides of the main plate portion in the short direction of the frame and projecting toward the first direction from the main plate portion, The aforementioned protrusion has an inclined plate portion that slopes toward the second direction as it extends outward in the short direction of the frame. LED lighting equipment.

2. The cover member has a main part that transmits the light of the LED and irradiates it to the outside, and an extension connected to the main part. The extended portion has an inclined plate portion that slopes toward the second direction as it extends outward in the short direction of the frame. The LED lighting device according to claim 1.

3. The frame has a side plate portion that is located outside the frame in the short direction from the protruding portion and extends toward the second direction, The cover member has a main part that transmits the light of the LED and irradiates it to the outside, a pair of extensions connected to the main part, and a pair of mounting parts connected to the pair of extensions. The frame has a first protrusion and a second protrusion as the protrusions, The tip of the side plate portion is located on the second direction side of the main plate portion. One of the pair of extensions extends toward the LED side from a position on the second direction side of the first protrusion on the inner surface of the main part, covering at least a portion of the first protrusion. The other of the pair of extensions extends toward the LED side from a position on the inner surface of the main part that is on the second direction side than the portion of the second protrusion that is on the first direction side, so as to cover at least a part of the second protrusion. Each of the pair of extensions is plate-shaped and has an outward extension located on the shorter side of the frame than the protruding portion. The cover member is attached to the side plate portion, The main portion has an outer end located further outward in the short-side direction of the frame than the protruding portion, The aforementioned outwardly extending portion extends from the outer end, The LED lighting device according to claim 1.

4. The aforementioned LED lighting device is housed in a recess in the fixture body. The pair of mounting portions extend in the second direction, Each of the pair of extensions further has an inner extension that extends toward the LED side from the outer extension so as to cover at least a portion of the protruding part, The mounting portion is attached to the side plate portion, The main plate portion is located on the second direction side of the opening edge of the recess, At least a portion of the protrusion is located on the first direction side of the opening edge of the recess. The LED lighting device according to claim 3.

5. Each of the pair of extensions extends such that its tip points toward the second direction. The LED lighting device according to claim 3.

6. The tip of each of the pair of extensions is in contact with the main plate. The LED lighting device according to claim 3.

7. The tip of each of the pair of extensions is in contact with the substrate. The LED lighting device according to claim 3.

8. A gap exists between the tips of the pair of extensions and the substrate. The LED lighting device according to claim 3.

9. At least a portion of each of the pair of extensions has a shape that follows a portion of the frame. The LED lighting device according to claim 3.

10. At least a portion of each of the pair of extensions is in contact with the frame. The LED lighting device according to claim 3.

11. At least a portion of at least one of the pair of extensions has a shape that follows the projection. The LED lighting device according to claim 3.

12. At least a portion of at least one of the pair of extensions is in contact with the protruding portion. The LED lighting device according to claim 3.

13. At least one of the pair of extensions is located closer to the center of the frame than the protruding portion. The LED lighting device according to claim 3.

14. An LED lighting device according to any one of claims 1 to 13, The fixture comprises a fixture body having a recess in which the LED lighting device is housed, LED lighting fixtures.

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