LED lighting devices and LED lighting fixtures

Abstract

To provide an LED lighting device etc. which can inhibit ends of a cover member as seen in a width direction from getting dark.SOLUTION: An LED lighting device comprises: a substrate 11 on which an LED 12 is disposed; a frame 20 having a main plate part 21 to which the substrate 11 is attached; and a cover member 30 attached to the frame 20. The frame 20 has: protruding parts 22 positioned at both sides of the main plate part 21 and protruding from the main plate part 21 toward the first direction side; and side plate parts 23 positioned at the outer side relative to the protruding parts 22 in a short direction of the frame 20 and extending to the second direction side. The cover member 30 has: a main part 31; a pair of extension parts 32 connected to the main part 31; and a pair of attachment parts 33 connected to the pair of extension parts 32. Each of the pair of extension parts 32 has a plate-like shape and an outer extension part 32a. The cover member 30 is attached to the side plate parts 23. The main part 31 has outer edge parts 31a positioned at the outer side relative to the protruding parts 22, and each outer extension part 32a extends from the outer edge part 31a.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an LED lighting device and an LED lighting fixture equipped with the LED lighting device. [Background technology]

[0002] LED lighting fixtures that use LEDs (Light Emitting Diodes) are known. For example, a lighting fixture that is installed on a ceiling includes a long LED lighting device called a light bar and a long fixture body that has a recess into which the LED lighting device can be detachably attached.

[0003] This type of LED lighting device comprises a long substrate, multiple LEDs mounted on the substrate, a long, translucent cover member that covers the multiple 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] Japanese Patent Application Laid-Open No. 2016-149332 [Patent Document 2] Japanese Patent Application Publication No. 2018-152263 Summary of the Invention [Problem to be solved by the invention]

[0005] However, conventional LED lighting devices have a problem in that the widthwise ends of the cover member become dark. In particular, as in the LED lighting devices disclosed in Patent Documents 1 and 2, when protrusions are formed on the widthwise ends of the frame so that they protrude toward the floor in order to increase the strength of the frame, the widthwise ends of the cover member become dark.

[0006] The present invention has been made in consideration of such problems, and aims to provide an LED lighting device that can prevent the widthwise ends of the cover member from becoming dark, and an LED lighting fixture that includes such an LED lighting device. [Means for solving the problem]

[0007] In order to achieve the above object, one aspect of the LED lighting device according to the present invention comprises a substrate on which LEDs are arranged, an elongated frame having a main board to which the substrate is attached, and a cover member attached to the frame so as to cover the LEDs, wherein, when a direction from the light-emitting side of the LEDs is defined as a first direction with respect to the main board and a direction opposite to the first direction is defined as a second direction, the frame has protrusions located on both sides of the main board in the short direction of the frame and protruding from the main board towards the first direction, and protrusions extending further than the protrusions. The cover member has a side plate portion located outside the short side of the frame and extending toward the second direction, and the cover member has a main portion, a pair of extension portions connected to the main portion, and a pair of mounting portions connected to the pair of extension portions, each of the pair of extension portions being plate-shaped and having an outer extension portion located outside the short side of the frame more than the protrusion, the cover member is attached to the side plate portion, the main portion has an outer end portion located outside the short side of the frame more than the protrusion, and the outer extension portion extends from the outer end portion.

[0008] Furthermore, one aspect 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, and the external extension portion of the LED lighting device is a contact portion that can abut against the open end of the recess. [Effects of the Invention]

[0009] It is possible to realize an LED lighting device that can prevent the widthwise ends of the cover member from becoming dark. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a perspective view of an LED lighting fixture according to an embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the LED lighting fixture according to the embodiment. [Figure 3] FIG. 3 is a cross-sectional view of the LED lighting fixture according to the embodiment. [Figure 4] FIG. 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 viewed 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 a method for attaching an LED lighting device to a fixture body in an LED lighting fixture according to an embodiment. [Figure 10] FIG. 10 is a diagram showing an example of a trajectory of light emitted from an LED in an LED lighting device according to an embodiment. [Figure 11A] FIG. 11A is a cross-sectional view of an LED lighting device according to Modification 1. FIG. [Figure 11B] FIG. 11B is a cross-sectional view showing a first modification of the LED lighting device according to the first modification. [Figure 11C] FIG. 11C is a cross-sectional view showing a second modification of the LED lighting device according to the first modification. [Figure 11D] FIG. 11D is a cross-sectional view showing a third modified example of the LED lighting device according to the first modified example. [Figure 11E] FIG. 11E is a cross-sectional view showing a fourth modified example of the LED lighting device according to the first modified example. [Figure 11F] FIG. 11F is a cross-sectional view showing a fifth modified example of the LED lighting device according to the first modified example. [Figure 12A]FIG. 12A is a cross-sectional view of an LED lighting device according to Modification 2. FIG. [Figure 12B] FIG. 12B is a cross-sectional view showing a first modified example of the LED lighting device according to Modification 2. As shown in FIG. [Figure 12C] FIG. 12C is a cross-sectional view showing a second modification of the LED lighting device according to the second modification. [Figure 12D] FIG. 12D is a cross-sectional view showing a third modified example of the LED lighting device according to the second modified example. [Figure 13] FIG. 13 is a cross-sectional view of an LED lighting device according to the third modification. [Figure 14] FIG. 14 is a cross-sectional view of an LED lighting device according to the fourth modification. [Figure 15A] FIG. 15A is a cross-sectional view of an LED lighting device according to Modification 5. FIG. [Figure 15B] FIG. 15B is a cross-sectional view of an LED lighting device according to Modification 5. As shown in FIG. [Figure 16] FIG. 16 is a cross-sectional view showing a first modified example of the LED lighting device according to the fifth modified example. [Figure 17] FIG. 17 is a cross-sectional view showing a second modified example of the LED lighting device according to the fifth modified example. [Figure 18] FIG. 18 is a cross-sectional view showing a third modified example of the LED lighting device according to the fifth modified example. [Figure 19] FIG. 19 is a cross-sectional view showing a fourth modified example of the LED lighting device according to the fifth modified example. [Figure 20] FIG. 20 is a cross-sectional view showing a fifth modified example of the LED lighting device according to the fifth modified example. [Figure 21A] FIG. 21A is a cross-sectional view of an LED lighting device according to Modification 6. FIG. [Figure 21B] FIG. 21B is a cross-sectional view showing a first modified example of the LED lighting device according to the sixth modified example. [Figure 21C] FIG. 21C is a cross-sectional view showing a second modified example of the LED lighting device according to the sixth modified example. [Figure 22] FIG. 22 is a cross-sectional view of an LED lighting device according to the seventh modification. [Figure 23]FIG. 23 is a cross-sectional view of an LED lighting device according to Modification 8. In FIG. [Figure 24] FIG. 24 is a cross-sectional view of an LED lighting device according to Modification 9. As shown in FIG. [Figure 25] FIG. 25 is a cross-sectional view of an LED lighting device according to the tenth modification. [Figure 26] FIG. 26 is a cross-sectional view showing a modified example of the LED lighting device according to the tenth modification. [Figure 27] FIG. 27 is a cross-sectional view of an LED lighting device according to the eleventh modification. [Figure 28] FIG. 28 is a cross-sectional view of an LED lighting device according to the twelfth modification. [Figure 29] FIG. 29 is a cross-sectional view of an LED lighting fixture and an LED lighting device according to the thirteenth modification. [Figure 30] FIG. 30 is a cross-sectional view showing a first modified example of the frame. [Figure 31] FIG. 31 is a cross-sectional view showing a second modified example of the frame. [Figure 32] FIG. 32 is a cross-sectional view showing a third modified example of the frame. [Figure 33] FIG. 33 is a cross-sectional view showing a fourth modified example of the frame. [Figure 34] FIG. 34 is a cross-sectional view showing a fifth modified example of the frame. [Figure 35] FIG. 35 is a cross-sectional view showing a sixth modified example of the frame. [Figure 36] FIG. 36 is a cross-sectional view showing a seventh modified example of the frame. [Figure 37] FIG. 37 is a cross-sectional view showing an eighth modified example of the frame. [Figure 38] FIG. 38 is a cross-sectional view showing a ninth modified example of the frame. [Figure 39] FIG. 39 is a cross-sectional view showing a tenth modified example of the frame. [Figure 40] FIG. 40 is a cross-sectional view showing an eleventh modified example of the frame. [Figure 41] FIG. 41 is a cross-sectional view showing a twelfth modified example of the frame. [Figure 42] FIG. 42 is a cross-sectional view showing a thirteenth modified example of the frame. [Figure 43] FIG. 43 is a cross-sectional view showing a fourteenth modified example of the frame. [Figure 44] FIG. 44 is a cross-sectional view showing a fifteenth modified example of the frame. [Figure 45] FIG. 45 is a cross-sectional view showing a sixteenth modification of the frame. [Figure 46] FIG. 46 is a cross-sectional view showing a seventeenth modification of the frame. [Figure 47] FIG. 47 is a cross-sectional view showing an eighteenth modification of the frame. [Figure 48] FIG. 48 is a cross-sectional view showing a 19th modified example of the frame. [Figure 49] FIG. 49 is a cross-sectional view showing a twentieth modification of the frame. [Figure 50] FIG. 50 is a cross-sectional view showing a 21st modified example of the frame. [Figure 51] FIG. 51 is a cross-sectional view showing a 22nd modified example of the frame. [Figure 52] FIG. 52 is a cross-sectional view showing a 23rd modified example of the frame. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that each of the embodiments described below shows a specific example of the present invention. Therefore, the numerical values, components, the arrangement and connection of the components, steps, and the order of steps shown in the following embodiments are merely examples and are not intended to limit the present invention. Therefore, among the components in the following embodiments, components that are not described in the independent claims that represent the highest concept of the present invention will be described as optional components.

[0012] Note that each figure is a schematic diagram and is not necessarily an exact illustration. Furthermore, in each figure, substantially the same components are assigned the same reference numerals, and redundant explanations are omitted or simplified. Furthermore, in each figure, the X-axis, Y-axis, and Z-axis represent the three axes of a three-dimensional Cartesian coordinate system, and in this embodiment, the Z-axis direction is the vertical direction, and the direction perpendicular to the Z-axis (the direction parallel to the XY plane) is the horizontal direction. The X-axis and Y-axis are axes that are mutually orthogonal and are both orthogonal to the Z-axis. Note that in this specification, the terms "up" and "down" do not necessarily refer to the upward direction (vertically upward) and downward direction (vertically downward) in absolute spatial recognition.

[0013] (Embodiment) First, the configuration of an LED lighting fixture 1 according to an embodiment will be described with reference to Figs. 1 to 4. Fig. 1 is a perspective view of the LED lighting fixture 1 according to an embodiment. Fig. 2 is an exploded perspective view of the LED lighting fixture 1. Figs. 3 and 4 are cross-sectional views of the LED lighting fixture 1. Figs. 3 and 4 show cross sections of the LED lighting fixture 1 cut along a plane parallel to the short side of the LED lighting fixture 1. Fig. 3 shows a cross section of a portion where a power supply device 4 is present, and Fig. 4 shows a cross section of a portion where a power supply device 4 is not present.

[0014] An LED lighting fixture 1 according to this embodiment includes a fixture body 2 and an LED lighting device 3 attached to the fixture body 2, as shown in FIGS.

[0015] The fixture body 2 holds the LED lighting device 3. The fixture body 2 is installed at a predetermined location in a building. The LED lighting fixture 1 in this embodiment is a ceiling-mounted lighting fixture. Therefore, the fixture body 2 is attached to the ceiling inside a 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 the metal plate. As shown in FIG. 2, the fixture body 2 is provided with a recess 2a having a rectangular opening. The recess 2a is elongated along the longitudinal direction of the fixture body 2. The recess 2a is a storage section for storing the LED lighting device 3 and is provided over substantially the entire length of the fixture body 2. As shown in FIGS. 2 and 3, on both sides of the recess 2a in the width direction of the fixture body 2, inclined surfaces 2b extend from the opening edge 2a1 of the recess 2a and are inclined upward (toward the ceiling) as they extend outward. As shown in FIG. 2, two slits 2c are provided in one of a pair of side surfaces 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 the 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 by hooking and engaging a hook metal fitting 5 and an elastic holding member 6 (a kick spring in this embodiment) provided on the LED lighting device 3 with the fixture body 2. The hook metal fitting 5 is a fitting for attaching the LED lighting device 3 to the fixture body 2. In this embodiment, the hook metal fitting 5 is a slide metal fitting.

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

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

[0020] The power supply device 4 is configured with a power supply circuit that generates power for illuminating the LED lighting device 3. Specifically, the power supply device 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 device 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, for example, a metal housing made of a metal plate. The power supply circuit that constitutes the power supply device 4 converts AC power from an external power source such as a commercial power source into DC power of a predetermined level by rectifying, smoothing, and stepping down the power, and supplies the DC power to the LEDs of the LED lighting device 3.

[0021] AC power is supplied to the power supply device 4 via a power terminal block 8 (see FIG. 2) connected to a power line (such as a VVF cable) that is inserted from above the ceiling into a through-hole in the fixture body 2 and drawn into the recess 2a of the fixture body 2. Power lines such as VVF cables are electrical wires used for construction work and are an example of electrical wires. 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 Figs. 5 to 8 while referring to Figs. 1 to 4. Fig. 5 is a perspective view of the LED lighting device 3 according to the embodiment as seen from the cover member 30 side, and Fig. 6 is a perspective view of the LED lighting device 3 as seen from the back side. Fig. 7 is a cross-sectional perspective view of the LED lighting device 3. Fig. 8 is an exploded perspective view of the LED lighting device 3.

[0023] 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 FIGS. 3, 7, and 8, the LED lighting device 3 includes a light source unit 10, a frame 20 in which the light source unit 10 is disposed, 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. That is, the power supply unit 4 is provided in 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 FIG. 3, the power supply unit 4 is fixed to the frame 20 by screwing the circuit case 4c to the main board 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 having a length substantially equal to the overall length of the frame 20 in the longitudinal direction (Y-axis direction), or a plurality of light source units 10 may be arranged along the longitudinal direction of the frame 20. As shown in FIG. 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 an LED, and includes a substrate 11 and an LED 12 arranged on the substrate 11, as shown in FIGS.

[0027] The substrate 11 is a mounting substrate for mounting the LEDs 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 FIG. 8, in this embodiment, two substrates 11 are arranged side by side along the longitudinal direction of the frame 20.

[0028] Substrate 11 is, for example, a printed wiring board (printed circuit board) on which metal wiring is formed in a predetermined pattern. Note that a resist made of an insulating resin material may be formed on the surface of substrate 11 so as to cover the wiring in order to protect the wiring and ensure a dielectric strength voltage. Substrate 11 may be a single-sided wiring board in which wiring is formed only on the main surface on which LEDs 12 are mounted, or a double-sided wiring board in which wiring is formed on both sides.

[0029] The base material constituting the substrate 11 may be a resin substrate made of an insulating resin material, a ceramic substrate made of a sintered body of a ceramic material such as alumina, or a metal-based substrate 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, examples of the resin substrate that can be used include 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, etc. The substrate 11 may be a rigid substrate or a film-like flexible substrate.

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

[0032] The substrate 11 is disposed 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 FIGS. 7 and 8 , LEDs 12 are arranged on the substrate 11. Specifically, a plurality of LEDs 12 are arranged on a first surface of the substrate 11. In this embodiment, the plurality of LEDs 12 are mounted in a linear row along the longitudinal direction (Y-axis direction) of the substrate 11 at predetermined intervals. Specifically, the plurality of LEDs 12 are mounted over substantially the entire length of the substrate 11 in the longitudinal direction. Therefore, the plurality of LEDs 12 are mounted along the longitudinal direction of the frame 20 and the cover member 30. Note that the plurality of LEDs 12 may be mounted in multiple rows along the longitudinal direction of the substrate 11, rather than in a single row. The plurality of LEDs 12 emit light when a direct current is supplied from the power supply 4 via an electric wire connecting the power supply 4 and the substrate 11.

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

[0035] The SMD-type LED 12 includes a white resin or ceramic container (package), an LED chip (bare chip) placed in the container, and a sealing material 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 powered 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 material filled into the container.

[0036] The light source section 10 configured in this manner is disposed on a frame 20. Specifically, the substrate 11 of the light source section 10 is disposed on the frame 20.

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

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

[0039] The frame 20 is made of sheet metal and is configured from a metal plate. The frame 20 is formed into a predetermined shape by performing roll forming, press working, or the like on a single sheet of metal (metal plate) made of, for example, SPCC (Steel Plate Cold Commercial; cold-rolled steel plate). The thickness of the metal plate that configures the frame 20 is, for example, 0.2 mm to 2 mm. In this embodiment, since the frame 20 is formed by sheet metal working, the thickness of the metal plate that configures the frame 20 is preferably 1 mm or less. In this embodiment, the thickness of the metal plate that configures the frame 20 is set to 0.5 mm.

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

[0041] 3 and 4, the frame 20 has a plate-shaped main plate 21 to which the substrate 11 is attached, a pair of protruding portions 22, and a pair of side plate portions 23. The protruding portions 22 are provided between the main plate 21 and the side plate portions 23. Specifically, one of the protruding portions 22 is connected to the main plate 21, and the other of the protruding portions 22 is connected to the side plate portions 23. Note that, as shown in FIG. 8, the main plate 21, the pair of protruding portions 22, and the pair of side plate portions 23 all extend along the Y-axis direction.

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

[0043] The main board 21 is in the form of a long plate, and has a first surface facing the substrate 11, and a second surface facing away from the first surface. When the LED lighting device 1 is installed on a ceiling, the frame 20 is positioned so that the first and second surfaces of the main board 21 are approximately parallel to the ceiling surface. In this case, the first surface of the main board 21 faces the floor, and the second surface of the main board 21 faces the ceiling.

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

[0045] 3, the main plate 21 is located closer to the bottom of the recess 2a than the opening surface of the recess 2a of the fixture body 2. In this embodiment, the LED 12 is also located closer to the bottom of the recess 2a than the opening surface of the recess 2a of the fixture body 2. Specifically, the main plate 21 and the LED 12 are located closer to the ceiling than the opening edge 2a1 of the recess 2a.

[0046] As shown in FIG. 8 , the main plate 21 has claws 21a formed by cutting and raising portions of the frame 20 made of a metal plate. The substrate 11 placed on the main plate 21 is fixed to the main plate 21 by engaging with the claws 21a. In this case, for example, the substrate 11 may be slid to engage with the claws 21a, or the substrate 11 may be crimped to engage with the claws 21a. Note that the method of fixing the main plate 21 and the substrate 11 is not limited to the locking structure using the claws 21a. The main plate 21 and the substrate 11 may also be bonded and fixed with adhesive, adhesive tape, or the like. Furthermore, although the main plate 21 and the substrate 11 are in contact with each other, this is not limiting. For example, a separate member such as a thermally conductive sheet may be inserted between the main plate 21 and the substrate 11. Furthermore, the main plate portion 21 is provided with a through hole through which an electric wire for electrically connecting the wiring of the substrate 11 and the power supply device 4 is inserted.

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

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

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

[0050] The pair of protrusions 22 can be formed by pressing a part of the metal plate that constitutes the frame 20 so that it protrudes toward the floor. Therefore, the plate thickness of the protrusions 22 and the plate thickness of the main plate portion 21 are the same.

[0051] 3, each of the pair of protruding portions 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 part of the protruding portion 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 portion 22a is a parallel plate portion parallel to the main plate portion 21. The second plate portion 22b is an inclined plate portion inclined with respect to the main plate portion 21. The third plate portion 22c is an upright plate portion standing upright with respect to the main plate portion 21.

[0053] The first plate portion 22a is located closer to the floor than the opening surface of the recessed portion 2a of the fixture body 2. In other words, the first plate portion 22a is located closer to the floor than the opening edge 2a1 of the recessed portion 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 third plate portion 22c, which is an upright plate portion, is located inside the first plate portion 22a and is connected to the end of the main plate portion 21. Therefore, the protruding portion 22 is configured to be inclined outward as a whole.

[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 is connected to an end of the main plate portion 21, and the erected third plate portion 22c is located outside the first plate portion 22a and is connected to an 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-side direction of the frame 20, and are located closer to the floor (first direction side) than the main plate portion 21. The first plate portion 22a, the second plate portion 22b, and the third plate portion 22c are all flat. That is, the first plate portion 22a, the second plate portion 22b, and the third plate portion 22c are flat-plate shaped.

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

[0057] In the present embodiment, the connection portion between the side plate portion 23 and the protruding portion 22 is located closer to the floor (first direction side) than the main plate portion 21. The side plate portion 23 extends from the protruding portion 22 past the position of the main plate portion 21 toward the ceiling side, but this 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 may be shorter than the length from the protruding portion 22 to the position of the main plate portion 21. In other words, the tip portion of the side plate portion 23 on the ceiling side may be located closer to the ceiling than the height position of the LEDs 12, may be at the same height position as the LEDs 12, or may be located closer to the floor than the height position of the LEDs 12.

[0058] The tip portions of the pair of side plate portions 23 are provided with bent portions 23a that are formed to be bent. In this embodiment, the bent portions 23a are folded back by folding back the tip portions of the side plate portions 23 in the thickness direction. Therefore, the bent portions 23a are composed of a folded back portion and a portion (a non-folded portion) that faces the folded back portion. The folded back portion of the bent portions 23a can be formed, for example, by curling and rolling up the tip portions of the side plate portions 23. Note that the bent portions 23a are not limited to those formed by curling, but may also be formed by hemming or the like. Note that the bent portions 23a formed by curling or hemming are formed by bending inward in the width direction, but are not limited thereto, and may also be formed by bending outward in the width direction. Furthermore, the bent portions 23a may not be formed at all.

[0059] Mounting portions 33 of the cover member 30 are 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 in and fitting the bent portions 23a of the side plate portions 23 into the recesses 33a provided in the mounting portions 33 of the cover member 30.

[0060] The light source unit 10 supported by the frame 20 is covered with a cover member 30. Specifically, the cover member 30 covers all of the LEDs 12 in the light source unit 10. As shown in FIG. 3 , the cover member 30 also covers the substrate 11 of the light source unit 10, and is disposed opposite the substrate 11 so as to cover the 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 that transmits light emitted from the LEDs 12. In this embodiment, the cover member 30 is a diffusion cover that not only transmits light but also diffuses light. Therefore, the light from the LEDs 12 that enters the cover member 30 is diffused (scattered) by the cover member 30 and passes through the cover member 30.

[0062] 6 and 7, the cover member 30 further covers the frame 20 in which the light source unit 10 is arranged. In the present embodiment, the cover member 30 covers the entire frame 20 in which the light source unit 10 is arranged. Note that 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] 3, there is a gap G between the cover member 30 and the inner surface of the recess 2a of the device body 2. In this embodiment, this gap G is the gap between the attachment portion 33 and the inner surface of the recess 2a.

[0066] The main portion 31 is a main body of the cover member 30, and transmits light from the LEDs 12 to irradiate it to the outside. The main portion 31 constitutes the exterior of the cover member 30. As shown in FIG. 8, the main portion 31 is elongated in the Y-axis direction and formed like a trough. The main portion 31 has, for example, a flat, approximately semi-cylindrical shape. Therefore, the main portion 31 has an elongated rectangular opening end face extending in the Y-axis direction. Furthermore, the cross-sectional shape of the main portion 31 when cut along the X-axis direction has a curved shape that is curved in an approximately arc shape. Note that the shape of the main portion 31 is not limited to a barrel-like R-shape, but may be an angular shape such as a U-shape, or a angular shape with a partially constricted side.

[0067] The main portion 31 has an outer end portion 31a located outside the protrusion 22 of the frame 20 in the short direction of the frame 20. Specifically, the outer end portion 31a is a portion of the main portion 31 located outside the attachment portion 33. The outer end portion 31a of the main portion 31 faces an opening edge 2a1 of the recess 2a of the appliance body 2. The opening edge 2a1 of the recess 2a is a flat surface parallel to the XY plane.

[0068] The pair of extension portions 32 are plate-shaped pieces with a uniform thickness. In the present embodiment, the pair of extension portions 32 are formed symmetrically with respect to the center of the cover member 30 in the XZ cross section, but this is not limiting.

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

[0070] In this embodiment, the outer extension portion 32a is a portion located outside the mounting portion 33, and the inner extension portion 32b is a portion located inside the mounting portion 33. In this case, as shown in Fig. 3, the outer extension portion 32a is a portion formed in a flat plate shape, and the inner extension portion 32b is a portion formed so as to bend at the protruding portion 22 of the frame 20. Specifically, the inner extension portion 32b has a portion extending from the connection portion between the outer extension portion 32a and the mounting portion 33 toward the floor, and a portion whose tip extends from the portion facing the protruding portion 22 of the frame 20 toward the ceiling.

[0071] Each extension portion 32 extends from the inner surface of the main portion 31 toward the inside of the cover member 30. That is, each extension portion 32 extends from the inner surface of the main portion 31 toward the LED 12. Each extension portion 32 extends toward the LED from a position on the inner surface of the main portion 31 that is closer to the ceiling (second direction) than the portion of the protruding portion 22 of the frame 20 that is closest to the floor (first direction). In this embodiment, the portion of the protruding portion 22 of the frame 20 that is closest to the floor is the first plate portion 22a of the protruding portion 22. Therefore, the extension portion 32 extends toward the LED 12 from a position closer to the ceiling 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 portion 32a extends from the outer end portion 31a of the main portion 31 toward the LED 12 side.

[0072] The outer extension 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 toward the floor or the ceiling (i.e., in the Z direction). The outer extension portion 32a also faces the opening edge 2a1 of the recess 2a. Therefore, the outer extension portion 32a is formed to span the gap G.

[0073] The portion of the outer extension 32a facing the opening edge 2a1 and the outer end 31a of the main portion 31 form a protrusion that protrudes outward from the mounting portion 33. Specifically, this protrusion is formed into a V-shaped cross section in the XZ cross section. The outer extension 32a does not protrude outward beyond the widthwise outer end of the opening surface of the recess 2a of the fixture body 2. Specifically, the outer extension 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) between the outer extension 32a and the outer end 31a of the main portion 31 is substantially flush with the inclined surface 2b of the fixture body 2. This allows the inclined surface 2b of the fixture body 2 and the surface of the main portion 31 of the cover member 30 to form a continuous surface, improving the design of the LED lighting device 3.

[0074] The outer extension portion 32a is a contact portion that can come into contact with the opening edge 2a1 of the recess 2a of the fixture body 2. When the LED lighting device 3 is stored in the recess 2a of the fixture body 2, the outer extension portion 32a may or may not come into contact with the opening edge 2a1. In other words, there may be a gap between the outer extension portion 32a and the opening edge 2a1, or the outer extension portion 32a and the opening edge 2a1 may be in close contact with each other.

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

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

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

[0078] Furthermore, at least a portion of each extension portion 32 can abut against the frame 20. Specifically, at least a portion of each extension portion 32 can abut against a portion of the protruding portion 22 of the frame 20. More specifically, each extension portion 32 can abut against 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 inner extension portion 32b has a first surface portion 32b1 that can abut against the first plate portion 22a of the protrusion 22, and a second surface portion 32b2 that can abut against the second plate portion 22b of the protrusion 22.

[0080] In this manner, when the LED lighting device 3 is stored in the recess 2a of the fixture body 2, at least a portion of each extension portion 32 may or may not be in contact with the protrusion 22. For example, the first surface portion 32b1 and the second surface portion 32b2 of the inner extension portion 32b of the extension portion 32 may or may not be in contact with the first plate portion 22a and the second plate portion 22b of the protrusion 22 of the frame 20.

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

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

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

[0084] The tip of each extension portion 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 portion 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. Note that the inner extension portion 32b may not be inclined and may extend parallel to the substrate 11, similar to the outer extension portion 32a.

[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 contacts the substrate 11. Specifically, the tip of the inner extension portion 32b of the extension portion 32 contacts the main surface of the substrate 11. This prevents insects from invading the space between the main portion 31 of the cover member 30 and the main plate portion 21 of the frame 20, even if the 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 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. Furthermore, even if the substrate 11 is adhesively fixed to the frame 20 with an adhesive or the like and the adhesive peels off, the substrate 11, which separates from the frame 20, is supported by the extension portion 32. This prevents the substrate 11 from falling.

[0087] Each extension portion 32 is preferably positioned outside the illumination angle (e.g., 1 / 2 beam angle) of the LED 12. For example, if light from the LED 12 is directly incident on the extension portion 32, it is desirable to position the extension portion 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 most 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 portion 32 and the frame 20. Specifically, a space exists between each extension portion 32 and the main plate portion 21 of the frame 20. This space can accommodate the base or head of a screw when various components are screwed together, or the crimped portion when the frame 20 is crimped to another metal component. For example, as shown in FIG. 3, this space accommodates the base of a screw 50 used to fasten the power supply unit 4 to the frame 20.

[0089] The space between each extension portion 32 and the frame 20 may house a functional component or an internal electric wire. The functional component may be, for example, a function expansion module. Examples of the function expansion module include a sensor unit equipped with various sensors, such as a motion sensor and a brightness sensor; a wireless module having an antenna and a control circuit for receiving wireless signals; an infrared module having a light-receiving element and a control circuit for receiving infrared signals; or a second light source separate from the LED 12 (first light source) mounted on the substrate 11. The wireless signal or infrared signal may be, for example, a remote control signal for turning the LED 12 on and off or adjusting the brightness and color of the LED 12, or a setting signal for configuring various settings of the LED lighting device 3. The second light source may be a light source for a 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 achieving a wide light distribution), a color light source for creating effects (for example, red, blue, and green LED light sources), or an emergency light source that is turned on in an emergency. When an emergency light source is used as the second light source, the cover and / or cover member 30 that covers the second light source may be made of a flame-retardant material such as glass.

[0090] The pair of mounting portions 33 are portions that 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 the 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 side. The pair of mounting portions 33 have the same length in the Z-axis direction. As shown in FIG. 7, each of the pair of mounting portions 33 is formed in an elongated shape along the Y-axis direction. The pair of mounting portions 33 also have the same length in the Y-axis direction.

[0092] 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. Bent portions 23a provided at the tip of the side plate portion 23 of the frame 20 are fitted into this recess 33a, whereby the pair of mounting portions 33 of the cover member 30 and the pair of side plate portions 23 of the frame 20 are engaged and fixed to each other. In this way, the pair of mounting portions 33 of the cover member 30 are fixed to the frame 20 in a manner that embraces the frame 20.

[0093] The side plate portion 23 of the frame 20 and the mounting portion 33 of the cover member 30 may be fixed together with a screw. The screw is screwed into the portion where the side plate portion 23 and the mounting portion 33 overlap from the outside of the mounting portion 33.

[0094] In this embodiment, the recess 33a is formed so that the 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 this. For example, the cross-sectional shape of the recess 33a may be L-shaped so that the tip is not folded back, or the cross-sectional shape may be V-shaped or arc-shaped. However, it is preferable that the recess 33a has a shape that allows the bent portion 23a to be 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 may be a milky white cover member with a light diffusing material dispersed therein. Such a cover member 30 may be produced by resin molding a translucent resin material mixed with a light diffusing material into a predetermined shape. Light-reflective fine particles such as silica particles may be used as the light diffusing material.

[0096] The cover member 30 may be configured 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 a light-diffusing material inside. The cover member 30 may also be configured to have light-diffusing properties by applying a diffusing treatment, rather than using a light-diffusing material. For example, the cover member 30 may be configured to have light-diffusing properties by applying a surface treatment such as a texturing treatment to form minute irregularities on the surface of the transparent cover, or by printing a dot pattern on the surface of the transparent cover. Even when the cover member 30 is subjected to a diffusing treatment, it may further contain a light-diffusing material to enhance light-diffusing properties.

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

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

[0099] In this embodiment, the end cap 40 is provided to close the open end of the cylindrical body formed by 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 formed by the frame 20 and the cover member 30, closing the open end of the cylindrical body. This makes it possible to prevent dust, insects, etc. from entering the inside of the cylindrical body formed by the frame 20 and the cover member 30. Note that the end cap 40 may not completely close the open end of the cylindrical body formed by 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 both 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 connected directly or indirectly to the longitudinal ends of the cover member 30. The end caps 40 and the cover member 30 may be fixed with an adhesive or by ultrasonic welding. Alternatively, the end caps 40 and the cover member 30 may be joined by providing an engaging structure such as a claw or a recess on 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 translucent. The translucent end cap 40 is made of a translucent resin material such as acrylic or polycarbonate, or a translucent material such as glass. The end cap 40 may also be translucent and diffusive. In this case, the end cap 40 may be made of the same material as the cover member 30, or may be made of a different material from the cover member 30.

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

[0103] Furthermore, electric wires used for the LED lighting device 3 may be arranged in the spatial region S. The electric wires used for the LED lighting device 3 include internal electric wires that are wired in a factory when the LED lighting device 3 is manufactured, and construction electric wires that are wired when the LED lighting device 1 is installed on a ceiling or the like. The internal electric wires and the construction electric wires are arranged on the ceiling side of the main board portion 21 of the frame 20.

[0104] The internal electric wires include electric wires connected to the power supply device 4 and electric wires connecting the plurality of light source units 10 together. Of these, the electric wires connected to the power supply device 4 include a power supply line connecting the power supply device 4 and the light source units 10, a power line connecting the power supply device 4 and the power terminal block 8, a dimming control line connecting the power supply device 4 and the dimming terminal block (not shown), and a control line connected to a function expansion module (sensor, etc.) described later.

[0105] The construction wires include power lines such as VVF cables and signal lines such as dimming signal lines. The construction wires such as power lines and signal lines are drawn from the ceiling, for example, and connected to predetermined locations on the LED lighting fixture 1 when the LED lighting fixture 1 is installed. For example, the power line such as the VVF cable is connected to the power terminal block 8, and the dimming signal line is connected to the dimming terminal block.

[0106] Any method can be used for wiring the internal wires and the construction wires. For example, the internal wires and the construction wires may be simply routed without being fixed to the frame 20, or the internal wires and the construction wires may be fixed to the frame 20 with tape or metal fittings, or the internal wires and the construction wires may be fixed to the frame 20 with a resin member such as an insulation lock or these wires may be tied together.

[0107] The LED lighting device 3 configured as described above 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 a hook 5 and an elastic holding member 6 shown in Figures 3, 5 and 6. The hook 5 and the elastic holding member 6 are fixed to the frame 20.

[0108] As shown in FIG. 3, the hook fitting 5 is arranged on the ceiling side of the main plate portion 21 of the frame 20. The hook fitting 5 is a plate member made of sheet metal. The hook fitting 5 is fixed to the end of the main plate portion 21 of the frame 20. As an example, the hook fitting 5 is fixed to the main plate portion 21 of the frame 20 with a fixing member such as a screw, and extends so as to protrude outward from the main plate portion 21 of the frame 20. The hook fitting 5 is hooked onto the fixture main body 2. In this embodiment, a slit 2c (see FIG. 2) is provided on the inner wall surface of the recessed portion 2a of the fixture main body 2, and the hook fitting 5 is hooked onto this slit 2c.

[0109] The elastic retaining member 6 is disposed on the ceiling side of the main plate portion 21 of the frame 20. The elastic retaining member 6 is a spring such as a kick spring. The elastic retaining member 6 is fixed to an 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 main plate portion 21 of the frame 20 on the opposite side from the hook metal fitting 5 in the width direction. The elastic retaining member 6 is fixed to the main plate portion 21 of the frame 20 with fixing members such as screws. Specifically, the elastic retaining member 6 is fixed to a holding metal fitting 6c (see FIG. 6 ) fixed to the frame 20 with an attachment screw. The elastic retaining member 6 is detachably attached to the appliance body 2. In this embodiment, the elastic retaining member 6 is detachably engaged with a receiving metal fitting 7 fixed to the appliance body 2.

[0110] 2, two hooks 5 and two elastic retaining members 6 are provided at each end of the frame 20 in the longitudinal direction, but this is not limited to this. Also, the hooks 5 and the elastic retaining members 6 are provided at positions facing each other in the lateral direction of the main plate portion 21 of the frame 20, but this is not limited to this.

[0111] Here, a method for attaching the LED lighting device 3 to the fixture body 2 will be described with reference to Fig. 9. Fig. 9 is a diagram for explaining a 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 (a) of Figure 9, the hooking bracket 5 is hooked into the slit 2c (see Figure 2) provided in the fixture body 2 to hang the LED lighting device 3 in a cantilevered state, and one end of the elastic holding member 6, which is a kick spring, is engaged with the receiving bracket 7 fixed to the fixture body 2.

[0113] Next, as shown in (b) of Figure 9, the hook fitting 5 is pushed deep into the slit 2c while the LED lighting device 3 is rotated around the hook fitting 5 as a fulcrum, thereby pushing the LED lighting device 3 up into the recess 2a of the fixture body 2.

[0114] 9(c), the LED lighting device 3 can be fitted into the recess 2a of the fixture body 2. In this way, the LED lighting device 3 can be attached to the fixture body 2.

[0115] When removing the LED lighting device 3 from the fixture body 2, the LED lighting device 3 can be removed from the fixture body 2 by performing the above-described operations in reverse. For example, the LED lighting device 3 can be removed from the fixture body 2 by rotating it while pulling it down.

[0116] As explained above, the LED lighting device 3 and the LED lighting fixture 1 according to this embodiment include at least the frame 20 and the cover member 30. The frame 20 has the first plate portion 22a and / or the second plate portion 22b located on both sides of the main plate portion 21 in the short direction of the frame 20 and located closer to the floor (first direction side) than the main plate portion 21. The cover member 30 has the main portion 31 having a surface facing the LEDs 12 and the extension portion 32 protruding from the inner surface of the main portion 31 toward the LEDs 12. The extension portion 32 has the first surface portion 32b1 and / or the second surface portion 32b2 as a surface portion that can come into contact with 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, which are plate portions of the frame 20, and the first surface portion 32b1 and / or the second surface portion 32b2, which are surface portions of the cover member 30, are configured to abut on each other at a surface rather than at a point. This allows the frame 20 and the cover member 30 to be firmly fixed together, thereby providing an LED lighting device 3 with high strength. Specifically, it is possible to ensure sufficient strength so that the LED lighting device 3 does not deform when it is attached to or detached from the fixture body 2.

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

[0119] If the frame 20 is provided with the protrusions 22 that protrude toward the floor, it becomes difficult for light from the LEDs 12 to reach the outer end 31 a of the cover member 30, and the outer end 31 a of the cover member 30 becomes darker than the central portion in the width direction (short direction) of the cover member 30. However, by forming the extensions 32 as described above, it is possible to form a spatial region that extends toward the ceiling outside the protrusions 22 of the frame 20 near the outer end 31 a of the cover member 30, as shown in FIG. 10 . As a result, even if the frame 20 is provided with the protrusions 22 that protrude toward the floor, light emitted from the LEDs 12 that does not pass through the main portion 31 of the cover member 30 but is reflected by the inner surface of the main portion 31 can be guided around to the spatial region formed near the outer end 31 a of the cover member 30. As a result, the light emitted from the LEDs 12 can be made to reach the outer edge 31a of the main portion 31 of the cover member 30 sufficiently, and therefore the area can be made to be sufficiently illuminated up to the vicinity of the outer edge 31a of the main portion 31 of the cover member 30. Therefore, the main portion 31 of the cover member 30 can be made to illuminate over the entire width direction (X-axis direction), and therefore the edges of the cover member 30 in the width direction can be prevented from becoming dark. In other words, the darkness of the edges of the cover member 30 in the width direction due to the protrusions 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 extension portion 32 of the cover member 30 can come into contact with the plate portion provided on the protrusion 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 can achieve both reduced darkness at the outer end portion 31a of the cover member 30 and high strength.

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

[0122] This configuration allows the main portion 31 of the cover member 30 to be sufficiently illuminated up to the vicinity of the outer end portion 31a. This allows the main portion 31 of the cover member 30 to be illuminated over the entire width direction (X-axis direction). Therefore, since the main portion 31 of the cover member 30 can be illuminated over the entire width direction (X-axis direction), it is possible to prevent the end portions of the cover member 30 in the width direction from becoming dark.

[0123] In particular, the LED lighting device 3 in this embodiment is structured so that the widthwise ends of the cover member 30 are likely to become dark due to the provision of the protrusion 22 on the frame 20 that protrudes toward the floor, but by making the outer extension portion 32a of the extension portion 32 overlap with the gap G, it is possible to effectively prevent the widthwise ends of the cover member 30 from becoming dark.

[0124] Moreover, 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 protrusion 22 of the frame 20 toward the ceiling. This allows the light emitted from the LEDs 12 to be guided around this spatial region. This further prevents the outer end 31a of the main portion 31 of the cover member 30 from appearing dark.

[0125] (Variation) Modified examples of the LED lighting device and LED lighting fixture will be described below with reference to the drawings. These modified examples can also achieve the same effects as the above-described embodiment. The following modifications will be described focusing on the differences from the above-described embodiment.

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

[0127] In the LED lighting device 3 according to the above embodiment, the cover member 30 is made of one type of resin material, but in the LED lighting device 3A according to this modification, 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 modification, at least a part of the extension portion 32A of the cover member 30A is made of a material different from that of the main portion 31.

[0128] 11A, in the LED lighting device 3A according to this modification, the main portion 31, the mounting portion 33, and the extended portion 32A are made of different resin materials. Specifically, the main portion 31, the mounting portion 33, the outer extended portion 32a of the extended portion 32A, the second surface portion 32b2 of the inner extended portion 32b of the extended portion 32A, and the first surface portion 32b1 of the inner extended portion 32b of the extended portion 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 forming at least a portion of the inner extension portion 32b of the extension portion 32A from a white or milky white resin material, the inner extension portion 32b can be provided with a reflective function. As a result, light emitted from the LEDs 12 and reaching the inner extension portion 32b of the extension portion 32A can be reflected by the inner extension portion 32b and incident on the main portion 31. In this case, by tilting the first surface portion 32b1 of the inner extension portion 32b obliquely toward the ceiling, as in this modification, the light from the LEDs 12 can be concentrated vertically and the light extraction efficiency of the LED lighting device 3A can be improved. By providing the inner extension portion 32b with a reflective function, the illuminance directly below the LED lighting fixture can be improved, thereby reducing the number of LED lighting fixtures 1 installed.

[0131] Although the light extraction efficiency can be improved as described above by making the reflectance of the extension portion 32A higher than that of the main portion 31, the reflectance of the extension portion 32A may also be higher than that of the frame 20. This improves the light extraction efficiency and allows the frame 20 to be paint-free. That is, there is no need to apply a reflective coating to the frame 20. Furthermore, the reflectance of the extension portion 32A may also be higher than that of the substrate 11. This improves the light extraction efficiency and allows the substrate 11 to be resist-free. That is, there is no need to form a white resist on the surface of the substrate 11 for reflective purposes.

[0132] 11A, the boundary of the two-color molding of the cover member 30A is 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 thereto. For example, as shown in FIGS. 11B and 11C, the boundary of the two-color molding of the cover member 30A may be located midway along the first surface portion 32b1 of the inner extension portion 32b of the extension portion 32A (for example, a portion facing the vertical plate portion 11c of the protrusion 22 or a tip portion of the first surface portion 32b1). As shown in FIGS. 11D and 11E, the boundary of the two-color molding of 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 Fig. 11D, the mounting portion 33 may remain translucent and be integrated with the outer extension portion 32a of the extension portion 32A, or as shown in Fig. 11E, the mounting portion 33 may be white or milky white and be integrated with the inner extension portion 32b of the extension portion 32A. Furthermore, as shown in Fig. 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 color the outer extension portion 32a and the inner extension portion 32b of the extension portion 32A, as well as the mounting portion 33, white or milky white.

[0133] 11A to 11F, different resin materials may be formed into layers by two-color molding. For example, the extension portion 32A of the cover member 30A may have a laminated structure with 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 extension portion 32A may be two-color and two-layer, and the cover member 30A may be formed by extrusion molding (two-layer extrusion).

[0134] (Variation 2) FIG. 12A is a cross-sectional view of an LED lighting device 3B according to the second modification.

[0135] In the LED lighting device 3 according to the above embodiment, the tip of the extension portion 32 of the cover member 30 abuts against the substrate 11. However, in the LED lighting device 3B according to this modification, the tip of the extension portion 32B of the cover member 30B abuts against the frame 20, as shown in FIG. 12A . Specifically, the tip of the extension portion 32B abuts against the main plate portion 21 of the frame 20.

[0136] This configuration can improve the strength of the LED lighting device 3B, and can also prevent insects from entering the inside of the cover member 30B.

[0137] In addition, in FIG. 12A, the base portion of the inner extension portion 32b of the extension portion 32B of the cover member 30B is connected to the connecting portion between the outer extension portion 32a and the attachment portion 33, but this is not limiting.

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

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

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

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

[0142] (Variation 3) FIG. 13 is a cross-sectional view of an LED lighting device 3C according to the third modification.

[0143] In the LED lighting device 3 according to the above embodiment, the second plate portion 22b of the protruding portion 22 of the frame 20 is inclined. However, as shown in Fig. 13, in an LED lighting device 3C according to this modification, the second plate portion 22b of the protruding portion 22C of the frame 20C is formed parallel to the main plate portion 21, just like 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 heights, and the protruding portion 22C is formed in a stepped shape. The second plate portion 22b of the protruding portion 22C is located closer to the floor than the main plate portion 21.

[0144] In the LED lighting device 3 of the above embodiment, the tip of the extension portion 32 of the cover member 30 abuts against the substrate 11, but in the LED lighting device 3C of this modification, as shown in Fig. 13, the tip of the extension portion 32C of the cover member 30C does not abut against the substrate 11, and a gap exists between the tip of the extension portion 32C and the substrate 11. In other words, the tip of the extension portion 32C is formed so as to be spaced apart from the substrate 11.

[0145] With this configuration, when the substrate 11 is fixed to the frame 20C with an adhesive or the like, even if the adhesive peels off, the substrate 11 is supported by the extension portion 32C, preventing the substrate 11 from falling. Furthermore, when the extension portion 32C has a reflective function, the light extraction efficiency can be further improved. Furthermore, by separating the extension portion 32C from the substrate 11, noise caused by contact between the extension portion 32C and the substrate 11 can be eliminated.

[0146] (Variation 4) FIG. 14 is a cross-sectional view of an LED lighting device 3D according to the fourth modification.

[0147] In the LED lighting device 3 of the above embodiment, the tip of the extension portion 32 of the cover member 30 abuts against the substrate 11. However, as shown in Fig. 14, in an LED lighting device 3D of this modification, the tip of the extension portion 32D of the cover member 30D abuts against the frame 20D. Specifically, the tip of the extension portion 32D abuts against the main plate portion 21 of the frame 20D. Furthermore, in the cover member 30D of this modification, an extension portion 33b is provided on the mounting portion 33D. The extension portion 33b extends from near the end of the side plate portion 23 of the frame 20D toward the ceiling.

[0148] This configuration can improve the strength of the cover member 30D, and therefore the strength of the LED lighting device 3D can be further improved.

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

[0150] (Variation 5) 15A and 15B are cross-sectional views of an LED lighting device 3E according to Modification 5. Fig. 15A shows a cross section cut away from a portion where a power supply device 4 is not present, and Fig. 15B shows a cross section cut away from a portion where a power supply device 4 is present.

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

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

[0153] By providing the protrusions 34 on the cover member 30E in this manner, when the cover member 30E or the frame 20 tries to move, the protrusions 34 come into contact with the protrusions 22, thereby 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 the cover member 30E to be pushed apart. However, by providing the protrusions 34, the protrusions 34 come into contact with the protrusions 22 of the frame 20 when the cover member 30E is pushed apart. 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. Furthermore, by providing the protrusions 34, the frame 20 and the cover member 30E can be aligned when assembling the LED lighting device 3E.

[0154] The convex portion 34 and the protruding portion 22 may or may not be in contact with each other. In other words, there may be a gap between the convex portion 34 and the protruding portion 22. In this case, it is preferable that the gap between the convex portion 34 and the protruding portion 22 is 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 protrusion 35 is formed in a position on the extension portion 32 where it can come into contact with the frame 20. Specifically, the protrusion 35 is formed on the surface of the inner extension portion 32b of the extension portion 32. The protrusion 35 is also formed in a position where it can come into contact with the surface of the first plate portion 22a of the protruding portion 22 of the frame 20. As an example, the protrusion 35 is formed as a ridge extending in the longitudinal direction of the cover member 30E.

[0156] Providing the protrusions 35 in this manner makes it possible to reduce abnormal noise that occurs when the frame 20 and the cover member 30E repeatedly come into contact with and separate from each other due to vibrations or the like. In this modified example, the tops of the protrusions 35 abut against the surface of the first plate portion 22a of the protruding portion 22. Furthermore, the protrusions 35 for reducing abnormal noise may be formed on the first plate portion 22a of the protruding portion 22 of the frame 20, rather than on the extension portion 32. The protrusions 35 may be formed on one or both of the frame 20 and the cover member 30E.

[0157] Furthermore, in the LED lighting device 3E of this modified example, the cover member 30E further has a protrusion 36. The protrusion 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 stored in the recess 2a of the fixture body 2 (not shown), the protrusion 36 comes into contact with the opening edge 2a1 of the recess 2a, thereby reducing abnormal noise generated between the cover member 30E and the fixture body 2 due to vibrations, etc.

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

[0159] 15A, the LED lighting device 3E according to this modification further includes a metal fitting 60. The metal fitting 60 is disposed on the ceiling side of the frame 20. The metal 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 metal fitting 60 may be attached to the mounting portion 33 of the cover member 30E by caulking, or may be attached to the frame 20 by screws, for example.

[0160] In addition, although the convex portion 34 of the cover member 30E in FIG. 15A is formed parallel to the third plate portion 22c of the protruding portion 22, the present invention is not limited to this.

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

[0162] In this case, the convex portion 34G of the cover member 30G may be formed to have a vertical portion and an inclined portion, as in an LED lighting device 3G shown in Fig. 17. This makes it possible to easily fit the cover member 30G and the frame 20 together, and also makes it difficult for the cover member 30G to come off the frame 20.

[0163] 18, the convex portion 34H of the cover member 30H may be formed so as to incline 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 come off the frame 20.

[0164] 19, the protrusion 34I of the cover member 30I may be formed so as to be inclined toward the third plate portion 22c of the protrusion 22C of the frame 20C and bent to have two inclined portions. This makes it difficult for the cover member 30I to come off the frame 20, and also makes it easy to fit the cover member 30I and the frame 20 together.

[0165] 20, the convex portion 34J of the cover member 30J may be formed to have a vertical portion and an inclined portion. Specifically, the convex portion 34J is formed to bend back toward the third plate portion 22c of the protrusion 22C. This makes it difficult for the cover member 30J to come off the frame 20, and also makes it easy to fit the cover member 30J and the frame 20 together.

[0166] (Variation 6) FIG. 21A is a cross-sectional view of an LED lighting device 3K according to the sixth modification.

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

[0168] For example, like an LED lighting device 3K shown in FIG. 21, an extension portion 32K of a cover member 30K may be formed so as to extend only up to the position of the protrusion 22 of the frame 20.

[0169] 21A, the end face of the tip of the extension portion 32K of the cover member 30K is not in contact with the main portion 21 of the frame 20, but this is not limited to this. For example, as shown in FIG. 21B, the end face of the tip of the extension portion 32K of the cover member 30K may be in contact with the main portion 21 of the frame 20. This makes it difficult for the cover member 30K to come off. 12A to 12D, there is a boundary between the double cover portion of the extension portion 32K and main portion 31 of the cover member 30K (an area where insects will not be noticeable even if they enter the inside of the cover member 30K through a gap and accumulate) and the single cover portion of the cover member 30K consisting of only the main portion 31 (an area where insects will be noticeable if they enter the inside of the cover member 30K and accumulate), so it was difficult to attach mounting structures, etc. near this boundary. However, by configuring as shown in FIG. 21B, the area where the board 11 can be placed on the main portion 21 of the frame 20 (board mounting portion) can be made wider compared to the case of FIGS. 12A to 12D, so that it is easier to attach mounting structures, etc. for the power supply unit 4, metal fittings, etc.

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

[0171] (Variation 7) FIG. 22 is a cross-sectional view of an LED lighting device 3L according to the seventh modification.

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

[0173] For example, as in an LED lighting device 3L shown in FIG. 22, an extension portion 32L of a cover member 30L may extend parallel to the substrate 11 toward the LED 12.

[0174] (Variation 8) FIG. 23 is a cross-sectional view of an LED lighting device 3M according to the eighth modification.

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

[0176] For example, as in an LED lighting device 3M shown in FIG. 23, an extension portion 32M of a cover member 30M may extend toward the LED 12 from a position away from the outer end portion 31a of the main portion 31.

[0177] (Variation 9) FIG. 24 is a cross-sectional view of an LED lighting device 3N according to the ninth modification.

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

[0179] 24, the extension portion 32N of the cover member 30N may be formed along the protrusion 22C in a shape that does not match the shape of the protrusion 22C of the frame 20C. In other words, the cover member 30N and the frame 20C may have portions where the extension portion 32N and the protrusion 22C are not formed parallel to each other.

[0180] (Variation 10) FIG. 25 is a cross-sectional view of an LED lighting device 30 according to the tenth modification.

[0181] In the LED lighting device 3 of the above embodiment, the protruding portion 22 of the frame 20 is shaped so that the second plate portion 22b is located outside the first plate portion 22a, but in an LED lighting device 3O of this modification, the protruding portion 22O of the frame 20O is shaped so that the second plate portion 22b is located inside the first plate portion 22a, as shown in Fig. 25. Note that the protruding portion 22O of this modification does not have the third plate portion 22c, which is a vertical plate portion.

[0182] Furthermore, in the LED lighting device 3O of this modification, as in the above-described modification 8, the extension portion 32O of the cover member 30O is not connected to the outer end portion 31a of the main portion 31, but extends from a position away from the outer end portion 31a of the main portion 31 toward the LED 12. Furthermore, as in the above-described modification 5, the extension portion 32O of this modification has a convex portion 34 and a protrusion 35.

[0183] 25, the convex portion 34 is inclined so as to incline toward the substrate 11, but this is not limiting. For example, as in an LED lighting device 3P shown in FIG. 26, a convex portion 34P provided on an extension portion 32O of a cover member 30P may be inclined so as to incline toward the protrusion 22O.

[0184] (Variation 11) FIG. 27 is a cross-sectional view of an LED lighting device 3Q according to the eleventh modification.

[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 is a parallel plate portion parallel to the substrate 11 and the main plate portion 21, but this is not limiting.

[0186] 27, 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 so as to bend between the first plate portion 22a and the second plate portion 22b. Note that the protruding portion 22Q of this modification does not have the third plate portion 22c, which is a vertical plate portion.

[0187] (Variation 12) FIG. 28 is a cross-sectional view of an LED lighting device 3R according to the twelfth modification.

[0188] In the LED lighting device 3 of the above embodiment, the protruding portion 22 of the frame 20 is configured only by a flat plate portion, but this is not limiting.

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

[0190] 28, the extension portion 32R of the cover member 30R may be shaped to fit the curved protrusion 22R. Specifically, the extension portion 32R may be shaped to fit the curved shape of the protrusion 22R. In this way, the shape of the surface of the extension portion 32R that can come into contact with the plate portion of the protrusion 22R is not limited to a flat surface, but may also be a curved surface.

[0191] (Variation 13) FIG. 29 is a cross-sectional view of an LED lighting fixture 1S and an LED lighting device 3S according to the thirteenth modification.

[0192] In the LED lighting device 1S according to this modification, a through-hole 2d is provided in the inner wall surface of the recess 2a of the device body 2.

[0193] Furthermore, in the LED lighting device 3S according to this modification, 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 of the protruding portion 22 on the LED 12 side. The extension portion 32S of the cover member 30S extends only up to the position of the upper surface of the protruding portion 22 of the frame 20S. In other words, the extension portion 32S does not cover the third plate portion 22c of the protruding portion 22.

[0194] With this configuration, the spatial region surrounded by the cover member 30S and the frame 20S communicates with the spatial region S on the ceiling side of the frame 20S in the recess 2a via the through-holes 24. Furthermore, the internal space (spatial region S) of the recess 2a communicates with the external space of the recess 2a via the through-holes 2d. This allows the heat generated by the LEDs 12 to be effectively dissipated by natural convection via the through-holes 24 and 2d. This prevents heat from building up in the spatial region surrounded by the cover member 30S and the frame 20S.

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

[0196] In the above-described embodiment and modified examples, various shapes of frames are exemplified as frames used in LED lighting devices. However, frames of the shapes described below may also be used. Note that the frames described below may also have the shapes already described above. For convenience, the frames described below will use the same reference numerals as those in the above-described embodiment, even though they have different shapes. The frame features described below may be mutually applicable, or may be applied to the above-described embodiment and modified examples.

[0197] First, a frame of any length can be used for the side plate portions 23. Specifically, as shown in Fig. 30, a frame 201 may be used in which the tips of the side plate portions 23 are positioned closer to the ceiling than the main plate portion 21, as shown in Fig. 31, a frame 202 may be used in which the tips of the side plate portions 23 are positioned at the position of the main plate portion 21, or an I-shaped frame 203 in which no side plate portions 23 are formed may be used, as shown in Fig. 32. Note that the longer the side plate portions 23 are, the stronger the frame can be.

[0198] Furthermore, the shape of the protrusion 22 of the frame 20 can be any shape.

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

[0200] Also, as shown in Figure 37, a frame 208 having a protrusion 22 made up 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, or 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] 41 to 43, frames 212, 213, and 214 may be used that have protruding portions 22 that are not provided with inclined plate portions. The protruding portions 22 of the frames 212, 213, and 214 shown in FIGS. 41 to 43 are all formed in a stepped shape. Note that the frame 212 shown in FIG. 41 is formed so that the tips of the side plate portions 23 are located closer to the ceiling than the main plate portion 21, the frame 213 shown in FIG. 42 is formed so that the tips of the side plate portions 23 are located at the position of the main plate portion 21, and the frame 214 shown in FIG. 43 has a shape in which the side plate portions 23 are not formed.

[0202] In this case, frames 215 to 221 shown in FIGS. 44 to 50 can be used as frames having stepped protrusions 22. Specifically, the protrusions 22 of frame 215 shown in FIG. 44 have a parallel plate portion at the same height as the main plate portion 21 and a parallel plate portion at a different height than the main plate portion 21. The protrusions 22 of frame 216 shown in FIG. 45 have two parallel plate portions, each at a different height than the main plate portion 21. The protrusions 22 of frame 217 shown in FIG. 46 have parallel plate portions and an inclined plate portion located inside the parallel plate portions. The protrusions 22 of frame 218 shown in FIG. 47 have parallel plate portions and an inclined plate portion located outside the parallel plate portions and inclined inward. The protrusions 22 of frame 219 shown in FIG. 48 have an inclined plate portion inclined outward and an inclined plate portion inclined inward. The protrusion 22 of the frame 220 shown in Fig. 49 has a parallel plate portion and a pair of inclined plate portions located on both sides of the parallel plate portion. The protrusion 22 of the frame 221 shown in Fig. 50 has two parallel plate portions at different heights and an inclined plate portion located inside the parallel plate portions.

[0203] As in frame 222 shown in Fig. 51, reinforcing rib 21b may be formed at the boundary between main plate portion 21 and protruding portion 22, or as in frame 223 shown in Fig. 52, reinforcing ribs (reinforcing beads) 21c and 21d may be formed on both sides of main plate portion 21 even when protruding portion 22 is not formed. This ensures the strength of the frame even in a low frame where side plate portions 23 are short or not formed, or where protruding portion 22 is not formed. Reinforcing ribs 21b, 21c, and 21d can be formed by press working.

[0204] In the above-described embodiments, the outer extension portion 32a may be a part of the main portion 31. In this case, the extension portion 32 includes, for example, only the inner extension portion 32b, which extends from the outer extension portion 32a, which is a part of the main portion 31, toward the inside of the cover member 30.

[0205] In the above-described embodiment, 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. That is, the LED lighting device 3 may be attached to the fixture body 2 without rotating the LED lighting device 3. 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 vertically moving the LED lighting device 3 in parallel toward the fixture body 2. In this case, the LED lighting device 3 can be attached to the fixture body 2 by vertically pushing and fitting the LED lighting device 3 into the recess 2a of the fixture body 2.

[0206] In addition, in the above-described embodiments, an SMD-type LED element in which an LED chip is mounted in a package is used as the LED 12, and the light-emitting module consisting of the substrate 11 and the LED 12 is 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, LED chips (bare chips) themselves are used as the LEDs 12, and a plurality of LEDs 12 (LED chips) are linearly arranged on the substrate 11, and the plurality of LEDs 12 are collectively or individually sealed with a sealing member (for example, a phosphor-containing resin).

[0207] Furthermore, in the above-described embodiment, the cover member 30 has both diffusive and translucent properties, but this is not limiting. For example, a translucent cover that has only translucent properties may be used instead of the cover member 30. In this case, a transparent cover with high transmittance that allows the viewer to see through it may be used as the translucent cover.

[0208] In addition, the present invention also includes forms obtained by applying various modifications to the above-described embodiments and modifications that would occur to those skilled in the art, and forms realized by arbitrarily combining the components and functions of the embodiments and modifications within the scope of the spirit of the present invention. Furthermore, the present invention also includes any combination of one or more components in each of the multiple claims described in the claims at the time of filing. Furthermore, when a dependent claim described in the claims at the time of filing is made into a multiple claim or multiple multiple claims that cites any multiple claims, the present invention also includes inventions that combine all claims included in that multiple claim or multiple multiple multiple claim. [Explanation of symbols]

[0209] 1. 1S LED lighting fixture 2. Device body 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 device 11 base plate 12 LED 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フレーム 21. Motherboard Section Protrusions 22, 22C, 22D, 22O, 22Q, 22R 30, 30A, 30B, 30C, 30D, 30E, 30F, 30G, 30H, 30I, 30J, 30K, 30L, 30M, 30N, 30O, 30P, 30R, 30S カバー parts 31 Main Department 31a Outer end Extensions for models 32, 32A, 32B, 32C, 32D, 32K, 32L, 32M, 32N, 32O, 32R, and 32S. 32a Extensional Equipment Department

Claims

1. a substrate on which an LED is arranged; a long frame having a main plate portion to which the substrate is attached; a cover member attached to the frame so as to cover the LED, When a direction of the light emitting side of the LED with respect to the main plate portion is defined as a first direction and a direction opposite to the first direction is defined as a second direction, the frame has protruding portions located on both sides of the main plate portion in a short-side direction of the frame and protruding from the main plate portion toward the first direction side, and side plate portions located outward of the protruding portions in the short-side direction of the frame and extending toward the second direction side, the cover member has a main portion that transmits light from the LED and irradiates it to the outside, a pair of extension portions connected to the main portion, and a pair of attachment portions connected to the pair of extension portions; the frame has a first protruding portion and a second protruding portion as the protruding portion, one of the pair of extension portions extends from a position on the inner surface of the main portion that is on the second direction side of a portion of the first protrusion that is located furthest on the first direction side toward the LED so as to cover at least a portion of the first protrusion, the other of the pair of extension portions extends from a position on the inner surface of the main portion that is on the second direction side of a portion of the second protrusion that is located furthest on the first direction side toward the LED so as to cover at least a portion of the second protrusion, Each of the pair of extension portions has a plate shape and includes an outer extension portion located outside the protrusion in a short-side direction of the frame, the cover member is attached to the side plate portion, the main portion has an outer end portion located outside the protruding portion in a short-side direction of the frame, The outer extension portion extends from the outer end portion. LED lighting equipment.

2. The LED lighting device is housed in a recess of a fixture body, The pair of mounting portions extend in the second direction, Each of the pair of extension portions further includes an inner extension portion extending from the outer extension portion toward the LED side so as to cover at least a portion of the protrusion, the mounting portion is attached to the side plate portion, the main plate portion is located on the second direction side of an opening edge of the recessed portion, At least a portion of the protrusion is located on the first direction side of an opening edge of the recess. The LED lighting device according to claim 1 .

3. Each of the pair of extension portions extends such that a tip thereof faces the second direction side. The LED lighting device according to claim 1 .

4. Each tip of the pair of extension portions is in contact with the main plate portion. The LED lighting device according to claim 1 .

5. a tip end of each of the pair of extension portions is in contact with the substrate; The LED lighting device according to claim 1 .

6. a gap exists between the tip ends of the pair of extension portions and the substrate; The LED lighting device according to claim 1 .

7. At least a portion of each of the pair of extension portions has a shape that follows a portion of the frame. The LED lighting device according to claim 1 .

8. At least a portion of each of the pair of extension portions is in contact with the frame. The LED lighting device according to claim 1 .

9. At least a portion of at least one of the pair of extension portions has a shape that follows the protrusion portion. The LED lighting device according to claim 1 .

10. At least a portion of at least one of the pair of extension portions is in contact with the protrusion. The LED lighting device according to claim 1 .

11. a tip end of at least one of the pair of extension portions is located closer to the center of the frame than the protrusion portion; The LED lighting device according to claim 1 .

12. The tip of the side plate portion is located closer to the second direction than the main plate portion. The LED lighting device according to claim 1 .

13. The LED lighting device according to any one of claims 1 to 12; a fixture body having a recess in which the LED lighting device is housed, The outer extension portion of the LED lighting device is a contact portion that can contact an open end of the recess. LED lighting fixture.

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