LED lighting

Abstract

To provide an LED lighting device which can be mounted on a ceiling and the like by aligning the direction.SOLUTION: An LED lighting device A5 comprises an LED unit 2 and a mount 1. The LED unit 2 includes a plurality of LED modules 20 arrayed in the x direction, a support member 3, a cover 4, and a power conversion part 5. The mount 1 comprises two base metal fittings 150 and two holders 11. The base metal fitting 150 has a raised part 150a and two extension parts 150b. At the raised part 150a, the holder 11 is mounted. The two extension parts 150b extend in the y direction by sandwiching the raised part 150a, and at each of the two extension parts 150b, a screw hole 112 is provided. The screw hole 112 has a long hole-like part 112a and a recessed part 112b. In the long hole-like part 112a, the y direction becomes a long axis direction. The recessed part 112b is recessed in the x direction from the center of the long hole-like part 112a.SELECTED DRAWING: Figure 31

Description

[Technical field]

[0001] The present invention relates to an LED lighting device that includes a plurality of LED chips and is used, for example, for indoor floor lighting or wall lighting. [Background technology]

[0002] FIG. 114 shows a cross-sectional view of an example of a conventional LED lighting device (see, for example, Patent Document 1). The LED lighting device X shown in the figure includes a rectangular substrate 91, a plurality of LED chips 92 mounted on the substrate 91, a tube 93 that houses the substrate 91, a terminal 94, and a circuit 95 for lighting the LED chips 92. Wiring (not shown) that is connected to the plurality of LED chips 92 and the terminal 94 is formed on the substrate 91. This LED lighting device X is configured so that the plurality of LED chips 92 can emit light by fitting the terminal 94 into a socket of a general-purpose fluorescent lighting fixture. Since the LED chips 92 have low power consumption and a long life, improvements can be expected in terms of cost and environment if the LED lighting device X is used as a substitute for a fluorescent lamp. A general-purpose fluorescent lighting fixture is a lighting fixture that is widely used mainly for general lighting indoors. For example, in Japan, it refers to a lighting fixture that uses a commercial 100V power source and is fitted with a straight fluorescent lamp specified in JIS C7617 or a circular fluorescent lamp specified in JIS C7618.

[0003] However, a conventional lighting fixture using a fluorescent lamp is configured on the premise that terminals 94 exist at both ends and light is emitted in all directions. For this reason, for example, when a lighting fixture in which a plurality of fluorescent lamps are arranged in series is equipped with a plurality of LED lighting devices X, dark areas that do not emit light are generated between adjacent LED lighting devices X. People who see this may feel that it looks bad. Or, even if it is desired to illuminate a portion of a wall surface, the use of the LED lighting device X results in light being irradiated to areas other than the desired area. For this reason, it is necessary to provide, for example, a light-shielding cover that covers half the circumference of the LED lighting device X.

[0004] Furthermore, the LED lighting device X uses a plurality of LED chips 92 as a light source. Since the LD chips 92 are point light sources, the light from the LED lighting device X is prone to uneven brightness. If this uneven brightness is significant, the individual LED chips 92 may be visible depending on the viewing direction. This may cause the viewer to feel that the appearance is not good.

[0005] In addition, when LED lighting equipment is installed on a ceiling or other surface without using general-purpose fluorescent lighting fixtures, there is a concern that the parts will deteriorate over long periods of use, causing the equipment to tilt or become misaligned, resulting in a poor appearance.

[0006] In addition, when multiple LED lighting devices are installed in different directions, for example along a corner of a room or a pillar, it is assumed that the ends of the multiple LED lighting devices will be arranged in different directions within a small area. In such cases, there is a concern that the viewer will get a cluttered impression and the appearance will be poor.

[0007] Furthermore, when the LED lighting device X is attached to a ceiling, it is attached to a general-purpose fluorescent lighting fixture fixed to the ceiling. Therefore, the LED lighting device X emits light at a position slightly below the ceiling. Then, a person looking at the ceiling gets the impression that the LED lighting device X and the general-purpose fluorescent lighting fixture protrude considerably from the ceiling. This protrusion from the ceiling creates a problem in that it hinders the unification of the interior appearance into a smart impression.

[0008] Furthermore, when the LED lighting device X is attached to a lighting fixture installed on the ceiling, the LED lighting device X protrudes considerably from the ceiling. Such a protruding LED lighting device X may give the impression that the room is cluttered. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Japanese Utility Model Application Publication No. 6-54103 Summary of the Invention [Problem to be solved by the invention]

[0010] The present invention has been devised in light of the above circumstances, and an object of the present invention is to provide an LED lighting device capable of suppressing luminance unevenness. [Means for solving the problem]

[0011] The LED lighting device provided by the present invention is an LED lighting device to be attached to a mounting surface, characterized in comprising: an LED unit having a plurality of LED chips mounted thereon and extending along a first direction; and a support having a box portion that houses at least a portion of the LED unit, the box portion being located at least a part of which is located deeper than an opening provided in the mounting surface.

[0012] In a preferred embodiment of the present invention, the support body further includes a frame portion that is connected to an outer periphery of the box portion and engages with the mounting surface.

[0013] The LED lighting device provided by the present invention is an LED lighting device equipped with a plurality of LED chips, comprising: an elongated support member on which the plurality of LED chips are mounted and extending along a first direction; and a diffusion cover connected to the support member, covering the plurality of LED chips, and diffusing light from the plurality of LED chips and emitting it to the outside, wherein the diffusion cover has a strong diffusion portion including a portion that is the shortest distance from the LED chips when viewed in the first direction, and the degree to which the strong diffusion portion diffuses the light from the plurality of LED chips is stronger than the average of the entire diffusion cover.

[0014] In a preferred embodiment of the present invention, the diffusion cover is formed so that a portion closer to the LED chip is thicker when viewed in the first direction.

[0015] In a preferred embodiment of the present invention, the strong diffusion portion is formed of a material that diffuses light from the LED chip more strongly than a material of the portion of the diffusion cover other than the strong diffusion portion.

[0016] In a preferred embodiment of the present invention, the diffusion cover has a constant thickness.

[0017] In a preferred embodiment of the present invention, the strong diffusion portion is composed of a main body of the diffusion cover and a diffusion member laminated on the main body for diffusing light from the multiple LED chips.

[0018] In a preferred embodiment of the present invention, the body of the diffusion cover has a constant thickness.

[0019] In a preferred embodiment of the present invention, the diffusion material is laminated on the inside of the main body of the diffusion cover.

[0020] In a preferred embodiment of the present invention, the LED chip is installed so that a second direction perpendicular to the first direction is the main emission direction, and the diffusion cover, when viewed in the first direction, has an outer peripheral shape that is elliptical with the LED chip at its center and the second direction as its minor axis.

[0021] In a preferred embodiment of the present invention, the strong diffusion portion has a flat plate shape.

[0022] In a preferred embodiment of the present invention, the diffusion cover is made of resin.

[0023] In a preferred embodiment of the present invention, the diffusion cover is milky white.

[0024] In a preferred embodiment of the present invention, the device includes a plurality of LED modules, each of which includes the above-mentioned LED chip, a lead on which the LED chip is mounted, and a light-transmitting resin that covers the LED chip.

[0025] In a preferred embodiment of the present invention, the light-transmitting resin contains a fluorescent material that is excited by light from the LED chip to emit light of a different wavelength from the light from the LED chip.

[0026] In a preferred embodiment of the present invention, the strong diffusing portion has a size larger than that of the LED module in a third direction perpendicular to both the first direction and the second direction.

[0027] In a preferred embodiment of the present invention, the device comprises an elongated LED unit carrying the plurality of LED chips and extending in the first direction, and a support for holding the LED unit and attached to a surface facing the second direction, the LED unit having a bracket for holding the plurality of LED chips, and the translucent cover is attached to a portion of the bracket located on the opposite side in the second direction from the side from which light is emitted from the plurality of LED chips.

[0028] In a preferred embodiment of the present invention, the bracket has a recess formed on the side opposite to the side from which light is emitted from the multiple LED chips in the second direction, and the multiple LED chips are arranged in the recess.

[0029] In a preferred embodiment of the present invention, a power conversion unit is provided that converts externally input power into power suitable for the multiple LED chips, and the power conversion unit is located on the opposite side of the multiple LED chips in the second direction from the side from which light is emitted from the multiple LED chips, and is housed in the bracket.

[0030] In a preferred embodiment of the present invention, the diffusion cover is engaged with the bracket.

[0031] In a preferred embodiment of the present invention, a pair of locking pieces is formed on both ends of the diffusion cover.

[0032] In a preferred embodiment of the present invention, the bracket is formed with a pair of engagement grooves that engage with the pair of engagement pieces of the diffusion cover.

[0033] Other features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. [Brief description of the drawings]

[0034] [Figure 1] 1 is a perspective view showing a main part of an LED lighting device according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view taken along line II-II in FIG. [Diagram 3] 2 is a perspective view showing a main part of an LED unit of the LED lighting device shown in FIG. 1. FIG. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Diagram 5] 4 is a cross-sectional view showing an LED module used in the LED unit shown in FIG. 3. [Figure 6] 4 is a perspective view showing a main part of a case of a power conversion unit of the LED unit shown in FIG. 3. [Figure 7] 4 is a cross-sectional view showing attachment of a cover in the assembly of the LED unit shown in FIG. 3. [Figure 8] 4 is a cross-sectional view of a main part showing a state in which a cover of the LED unit shown in FIG. 3 is pressed. FIG. [Figure 9] 2A, 2B, and 2C are a front view, a side view, and a plan view, respectively, showing the holder of the LED lighting device shown in FIG. [Figure 10] 2 is a cross-sectional view showing attachment of an LED unit to a mount in the assembly of the LED lighting device shown in FIG. 1. FIG. [Figure 11] 2 is a cross-sectional view showing removal of the LED unit in the LED lighting device shown in FIG. 1. [Figure 12] FIG. 11 is a perspective view showing a main part of an LED lighting device according to a second embodiment of the present invention. [Figure 13] 13 is a cross-sectional view taken along line XIII-XIII in FIG. 12. [Figure 14] 13 is a cross-sectional view showing an LED unit of the LED lighting device shown in FIG. 12. [Figure 15] 13 is a front view of a main part showing attachment of an LED unit to a mount in the assembly of the LED lighting device shown in FIG. 12. FIG. [Figure 16] 13 is a side view showing attachment of the LED unit to the mount in the assembly of the LED lighting device shown in FIG. 12. FIG. [Figure 17] 13A and 13B are front and side views showing a holder of an LED unit in the LED lighting device shown in FIG. 12. FIG. [Figure 18] FIG. 11 is a perspective view showing a main part of an LED lighting device according to a third embodiment of the present invention. [Figure 19] 19 is a cross-sectional view taken along line XIX-XIX in FIG. 18. [Figure 20] FIG. 11 is a cross-sectional view showing an LED lighting device according to a fourth embodiment of the present invention. [Figure 21] 21 is a cross-sectional view showing a support body of the LED lighting device shown in FIG. 20. [Figure 22] 22 is a cross-sectional view showing a state in which the base plate of the support shown in FIG. 21 is directly attached to a wall surface. FIG. [Diagram 23] 22 is a cross-sectional view showing a state in which a base plate of the support shown in FIG. 21 is attached to a wall surface. FIG. [Figure 24] FIG. 24 is a cross-sectional view taken along line XXIV-XXIV in FIG. 23. [Diagram 25] 23 is a cross-sectional view showing a state in which the base plate of the support shown in FIG. 22 is attached to a wall surface using another adjustment member. FIG. [Figure 26] FIG. 11 is a cross-sectional view showing a base plate provided with yet another adjustment member. [Figure 27]FIG. 27 is an enlarged view of a main portion of the base plate shown in FIG. 26. [Figure 28] FIG. 27 is a cross-sectional view showing a preferable mounting state of the base plate shown in FIG. 26. [Figure 29] 22 is a cross-sectional view showing a state in which an adjustment member is incorporated into the support body shown in FIG. 21. FIG. [Diagram 30] FIG. 13 is a perspective view showing a main part of an LED lighting device according to a fifth embodiment of the present invention. [Diagram 31] FIG. 31 is a plan view showing the LED lighting device shown in FIG. 30. [Diagram 32] 31 is a cross-sectional view taken along line XXXII-XXXII in FIG. 30. [Diagram 33] FIG. 31 is a plan view showing the state in which the LED lighting device shown in FIG. 30 is attached to a ceiling. [Diagram 34] FIG. 34 is a plan view showing a state in which the LED lighting device shown in FIG. 33 is shifted in the x direction. [Diagram 35] FIG. 34 is a plan view showing the LED lighting device shown in FIG. 33 shifted in the y direction. [Diagram 36] FIG. 13 is a plan view showing a modified example in which a screw hole is applied to the base plate. [Figure 37] FIG. 11 is a cross-sectional view showing an LED lighting device according to a sixth embodiment of the present invention. [Figure 38] 38 is a perspective view showing a holder in the LED lighting device shown in FIG. 37. [Figure 39] FIG. 38 is a side view of a main part of the LED lighting device shown in FIG. 37. [Diagram 40] FIG. 38 is a side view of a main part showing a modified example of the LED lighting device shown in FIG. 37. [Diagram 41] 38 is a side view of a main part showing another modified example of the LED lighting device shown in FIG. 37. [Diagram 42] FIG. 13 is a perspective view showing a main part of an LED lighting device according to a seventh embodiment of the present invention. [Diagram 43] FIG. 43 is a cross-sectional view taken along line XLIII-XLIII in FIG. 42. [Diagram 44] FIG. 43 is a cross-sectional view showing the attachment of an LED unit in the LED lighting device shown in FIG. 42. [Diagram 45] FIG. 43 is a cross-sectional view showing the attachment of an LED unit in the LED lighting device shown in FIG. 42. [Diagram 46] FIG. 43 is a cross-sectional view showing removal of the LED unit in the LED lighting device shown in FIG. 42. [Figure 47] FIG. 13 is a perspective view showing a main part of an LED lighting device according to an eighth embodiment of the present invention. [Figure 48] FIG. 48 is a perspective view showing a base plate of the LED lighting device shown in FIG. 47. [Figure 49] FIG. 49 is a cross-sectional view taken along line XLIX-XLIX in FIG. 48. [Figure 50] 48 is a cross-sectional view showing a modified example of the light-shielding portion shown in FIG. 47. [Figure 51] 48 is a cross-sectional view showing another modified example of the light-shielding portion shown in FIG. 47. [Figure 52] 48 is a perspective view of a main part showing still another modified example of the light-shielding part shown in FIG. 47. [Diagram 53] FIG. 13 is a perspective view showing a main part of an LED lighting device according to a ninth embodiment of the present invention. [Figure 54] FIG. 54 is an enlarged cross-sectional view of the cover shown in FIG. 53. [Figure 55] FIG. 55 is a cross-sectional view showing a modified example of the cover shown in FIG. 54. [Figure 56] FIG. 55 is a cross-sectional view showing another modified example of the cover shown in FIG. 54. [Figure 57] FIG. 55 is a cross-sectional view showing still another modified example of the cover shown in FIG. 54. [Figure 58] FIG. 55 is a cross-sectional view showing still another modified example of the cover shown in FIG. 54. [Figure 59] FIG. 23 is an exploded perspective view of an LED lighting device according to a tenth embodiment of the present invention. [Figure 60] FIG. 60 is a plan view showing the base plate of the LED lighting device shown in FIG. 59. [Figure 61] FIG. 60 is a cross-sectional view of a main part showing a process of attaching the base plate shown in FIG. 59 to a wall surface. [Figure 62] 60 is a plan view of a main portion showing a process of attaching the base plate shown in FIG. 59 to a wall surface. [Figure 63] FIG. 60 is a perspective view of a main part showing a modified example of the indicator portion shown in FIG. 59. [Figure 64] 62 is a plan view of a main portion showing a modified example of the indicator portion shown in FIG. 61. [Figure 65] 62 is a plan view of a main portion showing another modified example of the indicator portion shown in FIG. 61. [Figure 66] 62 is a plan view of a main portion showing still another modified example of the indicator portion shown in FIG. 61. [Figure 67] FIG. 23 is a cross-sectional view of an LED lighting device according to an eleventh embodiment of the present invention. [Figure 68] FIG. 68 is a perspective view of a main part of the LED unit shown in FIG. 67. [Figure 69] FIG. 69 is a cross-sectional view of the LED unit shown in FIG. 68. [Figure 70] FIG. 69 is a simplified wiring block diagram of the LED unit shown in FIG. 68. [Figure 71] FIG. 26 is a perspective view of a main part of an LED lighting device according to a twelfth embodiment of the present invention. [Figure 72] FIG. 72 is a side view of the LED unit shown in FIG. 71. [Figure 73] 73 is a cross-sectional view taken along line LXXIII-LXXIII in FIG. 72. [Figure 74] FIG. 23 is a perspective view of a main part of an LED lighting device according to a thirteenth embodiment of the present invention. [Figure 75] FIG. 75 is a cross-sectional view of the LED unit shown in FIG. 74. [Figure 76] FIG. 23 is a perspective view of a main part of an LED lighting device according to a fourteenth embodiment of the present invention. [Figure 77] FIG. 77 is a cross-sectional view of the LED unit shown in FIG. 76. [Figure 78] FIG. 23 is a perspective view of a main part of an LED lighting device according to a fifteenth embodiment of the present invention. [Figure 79] FIG. 79 is a perspective view of the holder shown in FIG. 78. [Figure 80] FIG. 79 shows a holder in which (a) is a front view, (b) is a side view, and (c) is a plan view. [Figure 81]FIG. 23 is a plan view showing an LED lighting device according to a sixteenth embodiment of the present invention. [Figure 82] FIG. 82 is a plan view of the LED lighting device shown in FIG. 81 as seen from the opposite direction. [Figure 83] FIG. 83 is a cross-sectional view taken along line LXXXIII-LXXXIII in FIG. 82. [Figure 84] FIG. 82 is an enlarged view of the main part of FIG. 81. [Figure 85] FIG. 82 is an enlarged view of the main part of FIG. 81. [Figure 86] FIG. 81 shows a first support, in which (a) is a plan view, (b) is a side view, and (c) is a bottom view. [Figure 87] FIG. 81 shows a bracket in which (a) is a left side view, (b) is a plan view, and (c) is a right side view. [Figure 88] FIG. 84 is an enlarged view of a main portion of the cover shown in FIG. 83. [Figure 89] FIG. 85 shows a cap in a front view (a), a side view (b), and a front view (c) showing the cap before attachment. [Figure 90] FIG. 84 shows a cap in which (a) is a front view, (b) a side view, (c) a plan view, and (d) a front view showing the state before attachment. [Figure 91] FIG. 81 shows a cap in which (a) is a front view, (b) is a side view, and (c) is a plan view. [Figure 92] FIG. 83 shows a case in which (a) is a side view of the main part, (b) is a front view, and (c) is a plan view of the main part. [Figure 93] FIG. 93 is an exploded view of the case shown in FIG. 92. [Figure 94] FIG. 23 is an enlarged plan view of a main portion of an LED lighting device according to a seventeenth embodiment of the present invention. [Figure 95] FIG. 23 is an enlarged plan view of a main portion of an LED lighting device according to an eighteenth embodiment of the present invention. [Figure 96] FIG. 23 is an enlarged plan view of a main portion of an LED lighting device according to a nineteenth embodiment of the present invention. [Figure 97] FIG. 23 is a perspective view of a main portion of an LED lighting device according to a twentieth embodiment of the present invention. [Figure 98]98 is a cross-sectional view of the LED lighting device shown in FIG. 97. [Figure 99] FIG. 98 is a front view of the wing portion of the LED lighting device shown in FIG. 97. [Figure 100] FIG. 98 is a plan view of a wing portion of the LED lighting device shown in FIG. 97. [Figure 101] FIG. 98 is a side view of the wing portion of the LED lighting device shown in FIG. 97. [Figure 102] FIG. 98 is a bottom view of the wing portion of the LED lighting device shown in FIG. 97. [Figure 103] FIG. 21 is a plan view of a main portion of an LED lighting device according to a twenty-first embodiment of the present invention. [Figure 104] 104 is a cross-sectional view of a main portion taken along line CIV-CIV in FIG. 103. [Figure 105] FIG. 104 is a cross-sectional view taken along the line CV-CV in FIG. [Figure 106] 104 is a cross-sectional view taken along the line CVI-CVI in FIG. 103. [Figure 107] FIG. 23 is a cross-sectional view showing a modified example of the LED lighting device according to the twenty-first embodiment of the present invention. [Figure 108] FIG. 22 is a plan view of a main portion of an LED lighting device according to a twenty-second embodiment of the present invention. [Figure 109] FIG. 23 is a plan view of a main portion of an LED lighting device according to a twenty-third embodiment of the present invention. [Figure 110] 109 is a cross-sectional view of a main portion taken along line CIX-CIX in FIG. [Figure 111] FIG. 109 is a cross-sectional view taken along the line CX-CX in FIG. [Figure 112] 110 is a cross-sectional view taken along line CXI-CXI in FIG. [Figure 113] FIG. 25 is a plan view of a main portion of an LED lighting device according to a twenty-fourth embodiment of the present invention. [Fig. 114] FIG. 1 is a cross-sectional view showing an example of a conventional LED lighting device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0035] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

[0036] 1 and 2 show an LED lighting device according to a first embodiment of the present invention. The LED lighting device A1 of this embodiment is composed of a mount 1 and an LED unit 2, and is used to illuminate a floor surface when attached to an indoor ceiling, for example, and has a length of about 1227 mm, a width of about 120 mm, and a height of about 38 mm.

[0037] The mount 1 includes a main body 10 and a plurality of holders 11. The main body 10 is elongated and extends in the x direction, and is made of, for example, aluminum. The main body 10 is provided with a recess 10a. The recess 10a is for accommodating the LED unit 2. The main body 10 has curved surfaces with a curvature that is continuous with the recess 10a in between.

[0038] The holder 11 is formed, for example, by bending a metal plate, and has a pair of locking pieces 11a and a pair of flexible parts 11b. As shown in FIG. 9, the flexible parts 11b are shaped to support the locking pieces 11a. When an external force is applied, the pair of flexible parts 11b are elastically deformable in a direction that moves the pair of locking pieces 11a closer to each other and farther away from each other. The pair of locking pieces 11a are portions that engage with the LED unit 2, and are inclined in FIG. 9(a) so that the distance between them becomes smaller as they move upward. In this embodiment, a plurality of holders 11 are provided in the recess 10a.

[0039] 3 and 4, the LED unit 2 includes a plurality of LED modules 20, a support member 3, a cover 4, and a power conversion unit 5. The LED unit 2 has a length (approximately 1220 mm) reaching both ends of the mount 1 in the x direction.

[0040] As shown in FIG. 5, the LED module 20 includes a pair of leads 21, an LED chip 22, a sealing resin 23, and a reflector 24. The pair of leads 21 are made of, for example, a Cu alloy, and the LED chip 22 is mounted on one of the leads. The surface of the lead 21 opposite to the surface on which the LED chip 22 is mounted is a mounting terminal 21a used for surface mounting the LED module 20. The LED chip 22 is a light source of the LED module 20, and is capable of emitting, for example, blue light. The sealing resin 23 is for protecting the LED chip 22. The sealing resin 23 is formed using a translucent resin containing a fluorescent material that emits yellow light when excited by light from the LED chip 22. This allows the LED module 20 to irradiate white light. As the fluorescent material, a material that emits red light and a material that emits green light may be mixed instead of a material that emits yellow light. The reflector 24 is made of, for example, a white resin, and is for reflecting upward the light emitted laterally from the LED chip 22.

[0041] As shown in FIGS. 3 and 4, the support member 3 is for supporting the plurality of LED modules 20 and supplying power thereto, and is made up of a substrate 31 and a bracket 32. As shown in FIG.

[0042] The substrate 31 is in the shape of a strip with its length in the x direction and its width in the y direction, and is made of, for example, a glass epoxy resin. In this embodiment, the substrate 31 has 288 LED modules 20 mounted thereon.

[0043] As shown in Fig. 4, the bracket 32 ​​is made of a base portion 321 and a pair of outer portions 322. The base portion 321 and the outer portion 322 are made of aluminum, for example. The base portion 321 has a U-shaped cross section, and the substrate 31 is attached to the outside of the bottom surface of the base portion 321. The outer portion 322 is shaped to cover approximately one side portion of the base portion 321 and the edge of the substrate 31 in the y direction. As shown in Figs. 3 and 4, the base portion 321 and the outer portion 322 are fastened together by a plurality of screws 33.

[0044] 4, a locking groove 323 is formed in each outer portion 322. The locking groove 323 extends in the x direction and is recessed in the z direction on the opposite side to the emission direction of the LED module 20. The locking groove 323 is a portion that engages with the locking piece 11a of the holder 11.

[0045] Moreover, a locking groove 324 is formed in one outer part 322. The locking groove 324 extends in the x direction and is recessed in the z direction opposite to the emission direction of the LED module 20. The locking groove 324 has a locking surface 324a. The locking surface 324a extends in the x direction and faces the opposite side to the emission direction in the z direction. The other outer part 322 has a locking groove 325. The locking groove 325 has a locking surface 325a and a protruding piece 325b. The locking surface 325a extends in the x direction and faces the opposite side to the emission direction in the z direction. The protruding piece 325b is located closer to the opposite side to the emission direction in the z direction than the locking surface 325a and is protruding in the emission direction.

[0046] 3, the cover 4 is in the shape of a strip having an arcuate cross section extending in the x-direction, and is made of, for example, a milky white resin that transmits while diffusing the light from the LED module 20. As shown in FIG. 4, locking pieces 41, 42 are formed on both end edges of the cover 4.

[0047] The locking piece 41 has an end 41a and a step portion 41b. The end 41a is convex in the z direction opposite the emission direction. The step portion 41b is shaped to shift the end 41a inward in the y direction before and after the step portion 41b. The locking piece 41 engages with the locking groove 324. More specifically, the end 41a is shaped to fit into the locking groove 324. The step portion 41b abuts against the locking surface 324a.

[0048] The locking piece 42 has a locking surface 42a and an inclined surface 42b. The locking surface 42a faces the emission direction in the z direction. The inclined surface 42b is located closer to the opposite side of the emission direction in the z direction than the locking surface 42a, and faces the protruding piece 325b of the support member 3 in the z direction. The inclined surface 42b is inclined so that it is positioned inward in the y direction as it approaches the opposite side of the emission direction in the z direction. The locking piece 42 engages with the locking groove 325 of the support member 3. More specifically, the locking surface 42a is in a position to abut against the locking surface 325a of the support member 3.

[0049] The power conversion unit 5, which functions to convert, for example, commercial AC 100V power to DC 36V, is housed in the support member 3. The power conversion unit 5 includes a case 51, a power supply board 52, and a plurality of electronic components 53. The case 51 has a U-shaped cross section and is made of, for example, metal. As shown in FIG. 6, a plurality of cutouts 51a are formed at the end of the case 51. The cutouts 51a are used to fix the power conversion unit 5 by engaging with a portion of the screw 33 shown in FIG. 4 that protrudes inward from the base portion 321. The power supply board 52 is fixed to the case 51, and a plurality of electronic components 53 are mounted thereon. The plurality of electronic components 53 are, for example, a transformer, a rectifier, and even a transistor for constant current control. As shown in FIG. 3, a connector 34 extends from the power conversion unit 5. This connector 34 is connected to a connector (not shown) attached to the mount 1.

[0050] In this embodiment, two power conversion units 5 are provided, and power is supplied from one power conversion unit 5 to 144 LED modules 20. These 144 LED modules 20 are divided into 12 groups, each group consisting of 12 LED modules connected in series to each other. These groups are connected in parallel to each other. As a result, each LED chip 22 is supplied with DC power with a voltage of about 3 V and a current of about 20 mA.

[0051] Next, the operation of the LED lighting device A1 will be described.

[0052] According to this embodiment, the LED lighting device A1 has a relatively gentle shape that does not protrude significantly from the ceiling surface. Therefore, it gives a smart impression to the viewer without unduly disturbing the beauty of the room. Furthermore, when multiple LED lighting devices A1 are arranged in series, the LED units 2 of adjacent LED lighting devices A1 are positioned very close to each other. Therefore, no excessively large non-light-emitting areas are formed between the LED lighting devices A1. Therefore, it is possible to give the viewer an impression that it looks good as a lighting device that illuminates a larger indoor floor surface.

[0053] By housing the power conversion unit 5 in the U-shaped support member 3, the height of the LED lighting device A1 can be made relatively low.

[0054] The outer portion 322 holds down the substrate 31. This makes it possible to prevent the substrate 31 from accidentally falling off even if the LED lighting device A1 is used for a long period of time while attached to a ceiling.

[0055] FIG. 7 shows how the cover 4 is attached to the support member 3 when assembling the LED unit 2. As shown clearly in this figure, first, the locking piece 41 of the cover 4 is hooked into the locking groove 324 of the support member 3. Next, the cover 4 is rotated around the locking piece 41, thereby bringing the locking piece 42 closer to the locking groove 325. Then, when the locking piece 42 is pushed into the locking groove 325, the locking surface 325a and the locking surface 42a come into contact with each other. In this way, the cover 4 can be easily attached.

[0056] FIG. 10 shows how the LED unit 2 is attached to the mount 1 when assembling the LED lighting device A1. As shown in this figure, first, the LED unit 2 is brought close from below to the mount 1 fixed to the ceiling, for example. Then, the LED unit 2 is pushed between the pair of locking pieces 11a of the holder 11. Then, the flexible portion 11b is slightly bent, causing the pair of locking pieces 11a to temporarily move away from each other. After that, as shown in FIG. 2, the locking pieces 11a engage with the locking grooves 323 of the support member 3. In this way, the LED unit 2 can be easily attached.

[0057] When the LED unit 2 is pushed in, the cover 4 is likely to be pushed with a strong force. At this time, as shown in FIG. 8, the locking piece 42 moves toward the back of the locking groove 325 in the z direction. Then, the inclined surface 42b and the convex piece 325b come into contact with each other. This applies a force to the locking piece 42 that moves it inward in the y direction. This makes it possible to prevent the cover 4 from being inappropriately detached from the support member 3 even if the cover 4 is pushed with a strong force.

[0058] FIG. 11 shows how the LED unit 2 is removed from the mount 1. As shown in this figure, first, a removal jig D with a U-shaped cross section is prepared. Then, both side edges of the removal jig D are pressed against the locking pieces 11a of the holder 11. Then, the flexible parts 11b are elastically deformed, and the pair of locking pieces 11a are separated from each other. As a result, the engagement between the locking pieces 11a and the locking grooves 323 is released. In this way, the LED lighting device A1 allows the LED unit 2 to be easily removed from the mount 1.

[0059] 12 to 97 show other embodiments of the present invention. In these figures, elements that are the same as or similar to those in the above embodiment are given the same reference numerals as those in the above embodiment.

[0060] 12 and 13 show an LED lighting device according to a second embodiment of the present invention. The LED lighting device A2 of this embodiment is a type that is used, for example, when attached to a relatively corner of a ceiling of a store, to illuminate the upper part of the wall surface that is exposed from the product shelves. The LED lighting device A2 is, for example, about 1290 mm in length, about 73 mm in width, and about 50 mm in height.

[0061] The main body 10 of the mount 1 has a wedge-shaped cross section and is shaped so that the wall side is open when the mount 1 is attached to a ceiling. The LED unit 2 is housed in the mount 1 and is rotatable around the direction x.

[0062] 14, in this embodiment, a reflector 322a is provided on an outer part 322 of a bracket 32 ​​of a support member 3. The reflector 322a is for reflecting light emitted in the y direction from the LED module 20 downward in the z direction. Locking grooves 324 and 325 are formed on the edge of the reflector 322a, and a cover 4 is attached to the reflector 322a.

[0063] As shown in FIG. 15, the LED unit 2 of this embodiment has a pair of shafts 35. The pair of shafts 35 are attached to both ends of the support member 3 in the x direction. The shaft 35 is composed of a base portion 35a and a tip portion 35b. The base portion 35a is a portion that is attached to the support member 3. The tip portion 35b is rotatable relative to the base portion 35a. More specifically, when the tip portion 35b is rotated, a resistance force is generated that requires the use of a tool such as pliers.

[0064] The mount 1 has a pair of holders 12. The pair of holders 12 are attached to both ends of the main body 10 in the x direction. As shown in FIG. 17, the holder 12 is formed with a fitting portion 12a, a flexible portion 12b, and a hook-shaped portion 12c. The fitting portion 12a is an oval-shaped hole, and fits with the tip portion 35b of the shaft 35. The flexible portion 12b is a portion that holds the fitting portion 12a, and when an external force is applied, it elastically deforms so as to move the fitting portion 12a outward in the x direction. The hook-shaped portion 12c is located inward in the x direction with respect to the fitting portion 12a, and is J-shaped.

[0065] As shown in FIG. 15 and FIG. 16, when attaching the LED unit 2 to the mount 1, the LED unit 2 is brought close to the mount 1, and the tip 35b of the shaft 35 is pressed against the flexible portion 12b of the holder 12. Then, the flexible portion 12b is deformed so that the fitting portions 12a of the pair of holders 12 are separated from each other. Furthermore, when the LED unit 2 is pushed in, the tip 35b fits into the fitting portion 12a, and the flexible portion 12b returns to its shape before deformation. This allows the LED unit 2 to be easily attached to the mount 1 by only pushing it in. Also, even if the tip 35b does not fit properly into the fitting portion 12a during the attachment work, the shaft 35 is caught by the hook-shaped portion 12c. Therefore, it is possible to prevent the LED unit 2 from being accidentally dropped during the attachment work of the LED unit 2.

[0066] The LED lighting device A2 can rotate the LED unit 2 around the x-direction, so it can selectively illuminate, for example, a portion of a wall surface above a product shelf. The inclusion of the reflector 322a makes it suitable for illuminating a desired location with high illuminance.

[0067] 18 and 19 show an LED lighting device according to a third embodiment of the present invention. The LED lighting device A3 of this embodiment differs from the above-mentioned LED lighting device A1 mainly in the configuration of the mount 1, but other configurations are the same as those of the LED lighting device A1, and therefore the description will be omitted as appropriate.

[0068] In this embodiment, the main body 10 of the mount 1 is composed of a base plate 110 and a wing portion 120. The base plate 110 is formed in a long and narrow plate shape with the x direction as the longitudinal direction and the y direction as the width direction, and includes a mounting surface 110a and a plurality of bulging portions 111. Both end edges of the base plate 110 in the y direction are bent downward in the z direction to ensure rigidity. The mounting surface 110a is a flat surface perpendicular to the z direction and is provided on the upper side in the z direction. The plurality of bulging portions 111 are portions formed to protrude downward in the z direction, and are arranged so as to be spaced apart from each other along the x direction. Each bulging portion 111 abuts against the wing portion 120.

[0069] The wing portion 120 has a bottom plate portion 121, two wall portions 122, and two arch-shaped portions 123, and is made of an opaque material, such as resin or aluminum. The bottom plate portion 121 is parallel to the base plate 110. The two wall portions 122 stand in the z direction from both ends of the bottom plate portion 121 in the y direction. The bottom plate portion 121 and the two wall portions 122 form a recess 10a for accommodating the LED unit 2. The two arch-shaped portions 123 extend from the lower ends of the two wall portions 122 in the z direction, and are disposed on either side of the recess 10a. The envelope of the two arch-shaped portions 123 is shaped to be arch-shaped. The base plate 110 and the wing portion 120 are joined to each other, for example, by screws (not shown).

[0070] The LED unit 2 is configured as described above with reference to Figures 3 and 4. More specifically, as shown in Figure 19, a recess 321a is formed in the base portion 321. The recess 321a is recessed upward in the z direction, and the substrate 31 is fitted into the recess 321a.

[0071] The lower part of the cover 4 in the figure has a shape equivalent to a part of an ellipse with the major axis direction being the y direction and the minor axis direction being the z direction. The position where the locking pieces 41, 42 of the cover 4 and the outer part 322 of the bracket 32 ​​are joined to each other is located above the LED module 20 in the figure, i.e., on the opposite side to the side where light is emitted from the LED module 20.

[0072] In this embodiment, the LED lighting device A3 has a total height ht of 40.3 mm. The total height ht is preferably less than 45 mm. The LED lighting device A3 has a total width Wt of 120 mm. The ratio of the total height ht to the total width Wt is ht / Wt=1 / 3. This ratio ht / Wt is preferably less than 1 / 2.

[0073] Moreover, the height h1 from the upper end of the mount 1 of the LED lighting device A3 to the lower end of the LED module 20 is 30 mm. The LED module 20 of this embodiment is remarkably small. For this reason, in the LED lighting device A3, the lower surface of the LED module 20 can be considered to be at approximately the same position as the light emitting surface of the LED chip 22. Moreover, the height h2 from the lower surface of the LED module 20 (light emitting surface of the LED chip 22) to the lower end of the LED unit 2 is 10.3 mm. The ratio of the heights h1 and h2 is h1 / h2=2.9. It is desirable that this ratio h1 / h2 is greater than 2 and less than 4.

[0074] The height d1 of the power conversion unit 5 is 19.5 mm. The ratio of the height d1 to the height h1 is d1 / h1=0.65. It is desirable that the ratio d1 / h1 is greater than 1 / 2.

[0075] The height h3 of the mount 1 of the LED lighting device A3 is set to 30 mm. This means that the height h3 is approximately 0.75 times the total height ht. It is desirable that the height h3 be 0.7 times or more the total height ht.

[0076] Next, the operation of the LED lighting device A3 will be described.

[0077] The envelope of the arch-shaped portion 123 of the mount 1 is arch-shaped. The cover 4 of the LED unit 2 does not completely match this envelope, but is close to this envelope and has a shape and position that gives the impression of blending in well. It is desirable that the intersection angle α1 between the extension line extending from the outer surface of the arch-shaped portion 123 toward the LED unit 2 and the cover 4 of the LED unit 2 is 40 degrees or less.

[0078] According to this embodiment, the total height ht is very low at 40.3 mm, so that the amount by which the LED lighting device A3 protrudes from the ceiling can be significantly reduced compared to the configuration using a conventional LED lamp. This can prevent the viewer from feeling cluttered when looking at the ceiling, and can make the light distribution characteristics more uniform. In particular, when the device is intended to be attached to the ceiling, if the total height ht is less than 45 mm, it can be expected to have the effect of preventing the cluttered impression and making the light distribution characteristics uniform.

[0079] A specific use of the LED lighting device A3 is assumed to be to use it as a replacement for a lighting device using a fluorescent lamp in a place where the lighting device was previously installed. In this case, when the lighting device using a fluorescent lamp is removed, the installation marks of the lighting device are often left on the ceiling as scratches or discolored areas. The LED lighting device A3 of this embodiment has a relatively small ratio ht / Wt of 1 / 3. In other words, this means that the overall height ht is low while the overall width Wt is relatively wide. This configuration has the advantage of being able to hide the installation marks of the lighting device that was previously installed. In addition to suppressing a cluttered impression and realizing uniform light distribution characteristics, in order to exert such advantages, it is desirable for the ratio ht / Wt to ​​be less than 1 / 2.

[0080] The ratio h1 / h2 of 2.9 makes it possible to obtain good light distribution characteristics while securing an appropriate space for arranging the power conversion unit 5. If the ratio h1 / h2 is 2 or less, there will be insufficient space for arranging the power conversion unit 5. On the other hand, if the ratio h1 / h2 is 4 or more, the light distribution characteristics are likely to become non-uniform. Furthermore, if an attempt is made to secure space for arranging the power conversion unit 5 when the ratio h1 / h2 is 2 or less, or to obtain good light distribution characteristics when the ratio h1 / h2 is 4 or more, the LED lighting device A3 will end up becoming larger.

[0081] The ratio d1 / h1 of 0.65 means that the height to the bottom surface of the LED module 20 (the light emitting surface of the LED chip 22) is kept low despite the inclusion of the relatively bulky power conversion unit 5. If the ratio d1 / h1 is 1 / 2 or less, the overall height ht of the LED lighting device A3 ends up being unduly high.

[0082] The height h3 of the mount 1 is 0.75 times the total height ht, which gives the impression that a significant portion of the LED lighting device A3 is covered by the mount 1. Furthermore, in this embodiment, the crossing angle α1 is set to 40 degrees or less. As a result, the LED lighting device A3 has very small and inconspicuous steps, giving the impression of being smooth and clean.

[0083] The cover 4 has a portion shaped to correspond to a part of an ellipse, so that the total height ht and the height h2 can be reduced. The cover 4 is attached to the bracket 32 ​​at a position closer to the ceiling than the LED module 20, which is suitable for suppressing the amount of protrusion of the cover 4 and is preferable for reducing the total height ht and the height h2. Furthermore, the substrate 31 is fitted in the recess 321a, so that the height h1 can be reduced.

[0084] By accommodating the power conversion unit 5 in the bracket 32 ​​on the ceiling side of the LED module 20, it is possible to make the LED unit 2 into a long and narrow compact cross-sectional shape. This has the advantage that the shape of the mount 1 that supports the LED unit 2 can be determined relatively freely.

[0085] FIG. 20 shows an LED lighting device according to a fourth embodiment of the present invention. The LED lighting device A4 differs from the above-described embodiment in that it is provided with an adjustment member as defined in the present invention. Other configurations are the same as those of the above-described LED lighting device A3, and therefore description thereof will be omitted where appropriate.

[0086] The mount 1 is a support that holds the LED unit 2, and includes a main body 10 and a plurality of holders 11. In addition to the base plate (first member) 110 and the wing portion (second member) 120, the main body 10 includes a screw 131, a screw 132, and a washer 141 as shown in FIG. 21. The screw 131 connects the base plate 110 and the wing portion 120, and is an example of the connecting means of the present invention. The screw 132 is used to attach the base plate 110 to a wall surface W, and is an example of the mounting means of the present invention. The wall surface W is, for example, a ceiling surface, and is formed so as to be perpendicular to the z direction as a whole. The washer 141 is installed as necessary when attaching the base plate 110 to the wall surface W, and is an example of the adjustment member of the present invention.

[0087] The base plate 110 is formed in a long and narrow plate shape with the x direction as the longitudinal direction and the y direction as the width direction, and includes a mounting surface 110a, a plurality of bulging portions 111, and a plurality of (ceiling mounting) screw holes 112. Both end edges of the base plate 110 in the y direction are bent downward in the z direction to ensure rigidity. The mounting surface 110a is a flat surface perpendicular to the z direction, and is provided on the upper side in the z direction. The plurality of bulging portions 111 are portions formed to protrude downward in the z direction, and are arranged so as to be spaced apart from each other along the x direction. Each bulging portion 111 is formed with a screw hole 111a (for connecting the wings) penetrating in the z direction. Inside the screw hole 111a, a female screw corresponding to the screw (connecting means) 131 is formed. Considering that the base plate 110 is long in the x direction, the bulging portions 111 are respectively disposed near both ends and near the center of the base plate 110 in the x direction.

[0088] The screw holes 112 are formed near both ends of the base plate 110 in the x direction. These screw holes 112 penetrate the base plate 110 in the z direction and are formed to allow the screws 132 to be inserted therethrough except for their heads. In this embodiment, each screw hole 112 is formed closer to the center in the x direction than the two screw holes 111a near both ends in the x direction, but the positional relationship between the screw holes 112 and the screw holes 111a may be reversed.

[0089] 23 and 24 show the base plate 110 attached to a wall W. 23, a washer 141 is attached to a screw 132 attached near the left end of the base plate 110. As shown in FIG. 24, the washer 141 is sandwiched between the attachment surface 110a and the wall surface W.

[0090] For comparison, FIG. 22 shows a case where the base plate 110 is fixed to the wall without the washer 141. 22 shows a state where the base plate 110 is attached to a surface W. According to Fig. 22, the vicinity of the left end in the x direction of the base plate 110 fits into a left recess in the wall surface W, and the base plate 110 is in an inclined state.

[0091] 22 and 23, the right end portion of a base plate 110' of another LED lighting device A4 installed adjacently in the x direction is shown at the left end of the figure. The base plate 110' is attached to the wall W without being inclined.

[0092] A plurality of screw through holes 121a penetrating in the z direction are formed in the bottom plate portion 121 of the wing portion 120. Each screw through hole 121a is formed at a position overlapping with each screw hole 111a of the base plate 110 when viewed in the z direction. The base plate 110 and the wing portion 120 are connected by abutting the bulge portion 111 and the bottom plate portion 121 and screwing each screw 131 into each screw through hole 121a and each screw hole 111a.

[0093] Next, the process of attaching the LED lighting device A4 to the wall W will be described.

[0094] When mounting the LED lighting device A4 on a wall surface W, the base plate 110, the wing portion 120, and the LED unit 2 are separated in advance. Then, a step of mounting the base plate 110 on the wall surface W is performed first. Next, a step of connecting the wing portion 120 to the base plate 110 is performed. After that, a step of mounting the LED unit 2 in the recessed portion 10a of the wing portion 120 is performed.

[0095] In the process of attaching the base plate 110 to the wall surface W, first, the base plate 110 is pressed against the wall surface W without the washer 141 being sandwiched between the attachment surface 110a and the wall surface W, and an inspection is performed as to whether or not the base plate 110 is inclined. This inspection can be performed, for example, by visually comparing it with the base plate 110'.

[0096] In the above inspection, if it is determined that the base plate 110 is not inclined, the base plate 110 is fixed to the wall surface W using two screws 132 without sandwiching the washer 141. On the other hand, in the above inspection, if it is determined that the base plate 110 is inclined, the washer 141 is sandwiched between the mounting surface 110a and the wall surface W, and the above inspection is performed again. The washer 141 is installed so as to overlap the screw hole 112 near the left end in the x direction. In addition, in the case where the right side in the x direction is recessed, contrary to the wall surface W in FIG. 23, the washer 141 is installed so as to overlap the screw hole 112 near the right end in the x direction. By repeating such an operation of sandwiching the washer 141 and the inspection, the inclination of the base plate 110 can be corrected. After that, the base plate 110 is fixed to the wall surface W using the screw 132.

[0097] The step of connecting the wing portion 120 to the base plate 110 is performed by passing the screw 131 through the screw through hole 121a and then screwing it into the screw hole 111a.

[0098] The process of attaching the LED unit 2 to the recess 10a is performed by pushing the LED unit 2 between the pair of locking pieces 11a of the holder 11. In this way, the flexible portion 11b is slightly bent, and the pair of locking pieces 11a are temporarily separated from each other. Then, as shown in FIG. 20, the locking pieces 11a engage with the locking grooves 323 of the support member 3, and the LED unit 2 is fixed in the recess 10a so as not to move in the y and z directions.

[0099] Next, the operation of the LED lighting device A4 will be described.

[0100] According to this embodiment, when attaching the base plate 110 to the wall surface W as described above, it is possible to adjust the position of the base plate 110 in the z direction by using the washers 141. Therefore, it is possible to attach the base plate 110 to a wall surface W having a recess without tilting it, as shown in Fig. 23. Furthermore, by adjusting the number of washers 141, it is possible to accommodate cases where the recess is large or small.

[0101] According to this embodiment, the base plate 110 and the wing portion 120 are connected by the screws 131 at least at three points near both ends and near the center in the x direction, and they do not move relative to each other after being connected. Furthermore, the LED unit 2 is fixed to the recess 10a so that it cannot move in the y and z directions. Therefore, if the base plate 110 is attached to the wall surface W so as not to tilt, the wing portion 120 and the LED unit 2 attached below it are also kept horizontal without tilting. Therefore, the LED lighting device A4 of this embodiment can be installed with a good appearance even if there is a recess in the ceiling. Also, even when multiple LED lighting devices A4 are installed side by side, it is possible to prevent some of the LED lighting devices A4 from tilting, and the aesthetic appearance can be maintained.

[0102] In the LED lighting device A4, as shown in FIG. 25, a spring 142 can be used as an adjustment member instead of the washer 141. The spring 142 is expandable and contractible in the z direction and is an example of the elastic member of the present invention. The spring 142 is disposed so that its upper end in the z direction contacts the recessed portion of the wall surface W and its lower end in the z direction contacts the mounting surface 110a. The spring 142 is sandwiched between the wall surface W and the mounting surface 110a in a state where it is more compressed than in its natural state, and functions to appropriately separate the two. Such a spring 142 is preferably used, for example, when the wall surface W is recessed to the extent that multiple washers 141 need to be attached.

[0103] 25, the spring 142 is arranged to surround the screw 132 because this is more preferable for preventing the spring 142 from falling off, but it may be arranged in another position. The spring 142 is stretched between the wall surface W and the mounting surface 110a, so that the spring 142 is unlikely to fall off from between the wall surface W and the mounting surface 110a even if it is not hooked on the screw 132. Therefore, the spring 142 can be installed relatively freely, which is effective in adjustment work when the wall surface W has complex unevenness.

[0104] 26 to 28 will explain another adjustment member that can be used with the LED lighting device A4. Fig. 26 and Fig. 28 show a state in which a base plate 110 is attached to a wall surface W' that bulges out to the left in the x-direction. The base plate 110 shown in Fig. 26 to Fig. 28 includes a laminated body 143 as an adjustment member.

[0105] 26 and 27, the laminate 143 is composed of a plurality of stickers 144 laminated on the attachment surface 110a so that they can be peeled off in order from the top. The stickers 144 are an example of the film-like member referred to in the present invention. The laminate 143 is installed, for example, near both ends and near the center in the x direction.

[0106] FIG. 26 shows the base plate 110 pressed against the wall surface W' with the seal 144 still intact.

[0107] Fig. 28 shows the base plate 110 attached to the wall surface W' after the adjustment work has been performed. The adjustment work for the stack 143 is performed by peeling off the seal 144 instead of adding the washer 141. According to Fig. 28, all of the seal 144 of the stack 143 located near the left end of the base plate 110 in the x direction has been peeled off, and part of the seal 144 of the stack 143 located near the center has been peeled off.

[0108] In the above embodiment, any one of the washer 141, the spring 142, and the laminate 143 is provided between the base plate 110 and the wall surface W, W', but the effect of the present invention can be obtained even if any one of the washer 141, the spring 142, and the laminate 143 is provided between the base plate 110 and the wing portion 120. For example, FIG. 29 shows the base plate 110 attached to the wall surface W'' that has an uneven surface and is inclined, and the wing portion 120 connected to the base plate 110 with the washer 141 sandwiched therebetween. In FIG. 29, the base plate 110 is attached while being inclined so as to go up toward the right in the figure along the inclination of the wall surface W''. However, the washer 141 is sandwiched between the bulge portion 111 at the right end in the x direction and the bottom plate portion 121, and as a result, the wing portion 120 is connected to the base plate 110 without being inclined.

[0109] 29, the washer 141 may be replaced by a spring 142 or a laminated body 143. When the laminated body 143 is used, the laminated body 143 is placed in the bulging portion 111.

[0110] 30 to 32 show an LED lighting device according to the fifth embodiment of the present invention. The LED lighting device A5 of this embodiment differs from the above-mentioned embodiments in the configuration of the mount 1. In this embodiment, the mount 1 is composed of two base metal fittings 150 and two holders 11. For ease of understanding, the screws 132 are omitted in FIG. 31. The configuration of the mount 1 in this embodiment is also applicable to the above-mentioned LED lighting devices A1 and A3.

[0111] The holder 11 is the same as that used in the LED lighting devices A1, A3, and A4. The locking piece 11a of the holder 11 is engaged with the locking groove 323 of the LED unit 2. The locking groove 323 extends in the x direction and is formed over almost the entire length of the LED unit 2. Therefore, the LED unit 2 is slidable in the x direction relative to the holder 11.

[0112] Each base metal fitting 150 is attached directly to a wall surface W such as a ceiling, and has a raised portion 150a and two extending portions 150b. The base metal fitting 150 is formed, for example, by drilling and bending a metal plate. The raised portion 150a is a portion separated from the wall surface W by a step, and the holder 11 is attached to the raised portion 150a.

[0113] The two extensions 150b extend in the y direction with the protruding portion 150a in between. A screw hole 112 is formed in each extension 150b. The screw hole 112 is for inserting the screw 132 and has an elongated hole portion 112a and a recess 112b. In this embodiment, the elongated hole portion 112a has a long axis direction in the y direction. In order to achieve the effects of the present invention described later, the long axis direction of the elongated hole portion 112a only needs to be perpendicular to the z direction and different from the x direction. The recess 112b is a portion recessed in the x direction from the center of the elongated hole portion 112a.

[0114] In this embodiment, two screw holes 112 are provided in each base metal fitting 150 so as to sandwich the LED unit 2. Furthermore, as shown in Fig. 31, the two base metal fittings 150 and the holder 11 are arranged spaced apart in the x direction.

[0115] Next, fine adjustment of the position of the LED lighting device A5 will be described below with reference to FIGS.

[0116] 33 shows the state in which two base metal fittings 150 are fixed by screws 132. At this time, each screw 132 is positioned within the recess 112b. In this state, the position in the y direction with respect to the adjacent LED lighting device A5 (not shown) is checked.

[0117] If it is found that the LED lighting device A5 is misaligned in the y direction relative to the adjacent LED lighting device A5, the screws 132 are loosened and the LED lighting device A5 is shifted leftward in the x direction as shown in Fig. 34. This causes each screw 132 to move from inside the recess 112b into the long hole portion 112a. In this state, the LED lighting device A5 can be moved in the y direction by an amount equal to the length of the long hole portion 112a minus the diameter of the screw 132.

[0118] Next, the LED lighting device A5 is shifted in the y direction as shown in Fig. 35. This figure shows the operation of moving the LED lighting device A5 downward on the page, since the position of the LED lighting device A5 has shifted upward on the page. Once it is confirmed that the position of the LED lighting device A5 in the y direction matches that of the adjacent LED lighting device A5, the screw 132 is tightened. This completes the position adjustment of the LED lighting device A5.

[0119] Next, the operation of the LED lighting device A5 will be described.

[0120] According to this embodiment, after the LED lighting device A5 is attached, for example, misalignment in the y direction with the adjacent LED lighting device A5 can be easily eliminated. To perform this adjustment work, there is no need to remove the LED unit 2. Since two screw holes 112 are spaced apart in the y direction for one base metal fitting 150, sandwiching the LED unit 2 therebetween, the base metal fitting 150, and therefore the LED unit 2, can be stably fixed to the wall surface W.

[0121] Furthermore, the two separate base metal fittings 150 are spaced apart in the x direction. This allows the two base metal fittings 150 to be moved separately from each other, for example, within a range of the gap between the screw hole 112 and the screw 132, or the backlash between the holder 11 and the LED unit 2. This reduces the risk that the work of fine-adjusting the position of one base metal fitting 150 by loosening the screw 132 fastening the base metal fitting 150 will be hindered by the other base metal fitting 150 that remains fixed. This is suitable for easily adjusting the position of the LED lighting device A5.

[0122] Since the LED unit 2 is slidable in the x direction relative to the holder 11, it is very easy to adjust the position of the LED unit 2 in the x direction. That is, by adjusting the position in the x direction using the slide in addition to adjusting the position in the y direction using the screw holes 112, it is possible to appropriately adjust the positions in the x and y directions of the LED units 2 of a plurality of LED lighting devices A5 arranged in series with each other, for example.

[0123] Prior to the above-mentioned position adjustment, when attaching the LED lighting device A5 to the wall surface W, the screw 132 is positioned in the recess 112b. This makes it possible to prevent the base metal fitting 150 from being unduly displaced in the y direction relative to the screw 132 during the attachment work. Since the recess 112b and the elongated hole portion 112a are connected, the position adjustment work in the y direction can be started quickly by positioning the screw 132 in the elongated hole portion 112a as shown in FIG.

[0124] Fig. 36 shows a modified example in which a screw hole 112 having an elongated hole portion 112a and a recess 112b is applied. The base plate 110 shown in this figure has a similar configuration to the base plate used in the LED lighting device A4 shown in Fig. 20. The base plate 110 of this modified example has three screw holes 112 spaced apart from each other in the x direction. This modified example also allows the position adjustment of the LED lighting device A5 to be performed appropriately.

[0125] 37 to 39 show an LED lighting device according to the sixth embodiment of the present invention. The LED lighting device A6 of this embodiment differs from the above-mentioned LED lighting device A3 mainly in the shape and installation position of the holder 11, but other configurations are similar to those of the LED lighting device A3, and therefore descriptions will be omitted as appropriate. Note that in FIG. 39, the base plate 110 and the wing portion 120 are omitted for simplification. The configuration of the holder 11 in this embodiment is also applicable to the above-mentioned LED lighting devices A1 and A5.

[0126] As shown in Fig. 38, the holder 11 in the LED lighting device A6 has a pair of locking pieces 11a each having a cutout portion 11c formed therein, and the rest of the configuration is the same as that of the holder 11 shown in Fig. 9. Each cutout portion 11c is formed so as to fit into the head portion of the screw 33. However, the length of the cutout portion 11c in the x direction is formed to be slightly larger than the diameter of the head portion of the screw 33.

[0127] 4 and 6, the screw 33 joins the base portion 321 and the outer portion 322 of the bracket 32. The screw 33 fits into the cutout portion 51a of the case 1 of the power conversion unit 5, thereby fixing the power conversion unit 5 to the bracket 32.

[0128] 39, the head of the screw 33 fits into the cutout 11c of the holder 11. In this embodiment, two screws 33 fit into one holder 11. As a result, the position of the center of the holder 11 in the x direction coincides with the x direction position of the screw 33 when the LED unit 2 is properly installed.

[0129] Further, a plurality of screws 33 are attached to the bracket 32. These screws 33 are arranged in pairs on both sides in the y direction at the same position in the x direction, and the plurality of pairs of screws 33 are arranged spaced apart in the x direction. The LED lighting device A6 is provided with a plurality of holders 11 corresponding to the arrangement of these screws 33.

[0130] Next, the operation of the LED lighting device A6 will be described.

[0131] According to this embodiment, the head of the screw 33 fits into the pair of notches 11c, and the LED unit 2 is fixed to the wing portion 120 so as not to move in the x direction. Therefore, even if the support 1 is tilted when the LED lighting device A6 is attached to the ceiling, for example, the LED unit 2 is unlikely to slide along the x direction. Therefore, it is possible to prevent the LED unit 2 from falling off when and after the LED lighting device A6 is attached to the ceiling.

[0132] In the above embodiment, the number and arrangement of the multiple screws 33 and the multiple holders 11 correspond to each other, but the effect of the present invention can be obtained as long as one cutout portion 11c of one holder 11 is fitted with one screw 33. In this case, the holder 11 installed at a position that does not overlap with the screw 33 in the x direction may be the holder 11 shown in FIG.

[0133] Fig. 40 shows a modified example of the LED lighting device A6. For simplicity, the base plate 110 and the wing portion 120 are omitted in Fig. 40. In the LED lighting device A6 shown in Fig. 40, two screws 33 are arranged to sandwich one holder 11 from the left and right in the x direction. The holder 11 is the same as that shown in Fig. 9.

[0134] In such an LED lighting device A6, the holder 11 is also sandwiched between two screws 33, so that the LED unit 2 cannot move in the x direction. Therefore, such an LED lighting device A6 can also prevent the LED unit 2 from falling off when and after the LED lighting device A6 is attached to the ceiling.

[0135] Fig. 41 shows another modified example of the LED lighting device A6. For simplicity, the base plate 110 and the wing portion 120 are omitted in Fig. 41. In the LED lighting device A6 shown in Fig. 41, a pair of holders 11 support the LED unit 2 near both ends in the x direction. The holder 11 in this embodiment is similar to that shown in Fig. 9.

[0136] 41, a screw 33 is provided adjacent to the left end of the holder 11 on the left side in the x direction. Furthermore, a screw 33 is provided adjacent to the right end of the holder 11 on the right side in the x direction.

[0137] In this LED lighting device A6 as well, the pair of holders 11 are sandwiched in the x direction by two screws 33 arranged on the left and right in the x direction so that the LED unit 2 does not move in the x direction. This makes it difficult for the LED unit 2 to fall off when and after the LED lighting device A6 is attached to the ceiling.

[0138] 42 and 43 show an LED lighting device according to the seventh embodiment of the present invention. The LED lighting device A7 of this embodiment differs from the above-mentioned LED lighting device A3 mainly in the configuration of the mount 1, particularly the structure for fixing the LED unit 2, but other configurations are the same as those of the LED lighting device A3, and explanations will be omitted as appropriate. Note that the configuration for fixing the LED unit 2 in this embodiment can also be applied to the above-mentioned LED lighting devices A1 and A5.

[0139] In this embodiment, a holder 13, which is an elastic member, is disposed on one side of the recess 10a in the y direction, and a restricting member 125 is formed on the other side. The restricting member 125 is a plate-like member that protrudes from the wall 122 in the y direction and is perpendicular to the wall 122. The restricting member 125 is installed, for example, over substantially the entire length of the wing 120 in the x direction.

[0140] The holder 13 is formed by, for example, bending a metal plate, and has a locking piece 13a, a flexible portion 13b, and a fixed portion 13c. As shown in FIG. 43, the locking piece 13a is inclined so as to move away from the LED unit 2 in the y direction as it moves away from the bottom plate portion 121 in the z direction. The flexible portion 13b is inclined so as to move closer to the LED unit 2 in the y direction as it moves away from the bottom plate portion 121 in the z direction. The flexible portion 13b supports the locking piece 13a at one end, and the other end is connected to the fixed portion 13c, and is formed so as to be elastically curved and deformable. The fixed portion 13c is a plate-shaped member provided so as to overlap the bottom plate portion 121, and is fixed to the wing portion 120 via a screw 131. A plurality of the holders 13 are installed so as to be lined up along the x direction.

[0141] A protrusion 323A protruding in the y direction is formed on the outer part 322 of the LED unit 2. A locking groove 323 (for fixing) is formed on the protrusion 323A. The outer part 322 on the right side in the y direction and the outer part 322 on the left side are the same parts arranged in opposite directions, and are line symmetrical on the left and right. As shown in FIG. 43, the protrusion 323A on the right side in the figure engages with the restricting member 125. Furthermore, the locking piece 13a engages with the locking groove 323 provided in the protrusion 323A on the left side in the figure.

[0142] When the LED unit 2 is fixed to the wing portion 120, first, as shown in FIG. 44, the LED unit 2 is fitted into the recess 10a. At this time, the support member 3 tries to push the locking piece 13a of the holder 13 outward in the y direction. This force causes the flexible portion 13b to elastically deform. When the LED unit 2 is pushed into the recess 10a, the state shown in FIG. 45 is reached. At this time, the locking piece 13a of the holder 13 fits into the locking groove 323. After that, when the holder 13 deforms to return to its original shape, the LED unit 2 moves to the right in the y direction until it comes into contact with the regulating member 125. At this time, the protrusion 323A is locked by the regulating member 125.

[0143] FIG. 46 shows how the LED unit 2 is removed from the wing portion 120. As shown in the figure, first, a removal tool D with a U-shaped cross section is prepared. Then, the left edge of the removal tool D is pressed against the locking piece 13a of the holder 13. Then, the flexible part 13b is elastically deformed, and the locking piece 13a is retracted to the left in the figure. As a result, the locking piece 13a is disengaged from the locking groove 323. Furthermore, by moving the LED unit 2 to the left in the y direction, the engagement between the restricting member 125 and the protrusion 323A is also disengaged. In this way, the LED lighting device A7 allows the LED unit 2 to be easily removed from the wing portion 120.

[0144] Next, the operation of the LED lighting device A7 will be described.

[0145] According to this embodiment, in the recess 10a, the LED unit 2 is constantly pressed against the regulating member 125 by the elastic force of the holder 13. Therefore, the y-direction position of the LED unit 2 is determined by the regulating member 125. Therefore, the y-direction position of the LED unit 2 can be accurately set. Furthermore, according to this embodiment, since the protrusion 323A is engaged with the regulating member 125, the z-direction position of the LED unit 2 in the recess 10a is also determined by the regulating member 125. As a result, when a large number of LED lighting devices A7 are provided on a ceiling, for example, it is possible to prevent the y-direction positions and z-direction positions of the LED units 2 from becoming disjointed, and the appearance can be improved.

[0146] Fig. 47 shows an LED lighting device according to the eighth embodiment of the present invention. The LED lighting device A8 shown in Fig. 47 differs from the above-mentioned LED lighting device A3 mainly in the structure of the base plate 110, but other configurations are similar to those of the LED lighting device A3, and explanations will be omitted as appropriate. Note that the configuration of the base plate 110 in this embodiment is also applicable to the above-mentioned LED lighting devices A1 and A5.

[0147] In this embodiment, the base plate 110 includes an elongated long plate portion 113 extending in the x direction, plate-like members 114 and 115 extending downward in the z direction from both ends of the long plate portion 113 in the y direction, and two plate-like members 114b. As shown in FIG. 48, the base plate 110 is formed with two cutout portions 114a spaced apart in the x direction. Each cutout portion 114a has a predetermined length in the x direction, extends over the entire length of the plate-like member 114 in the z direction, and is formed so as to cut a predetermined length of the long plate portion 113 in the y direction. A pair of plate-like members 114b protrude downward in the z direction from the y-direction ends of each cutout portion 114a, and are formed so as to overlap each other when viewed in the x direction.

[0148] The end of the long plate portion 113, the plate-like member 114, and the pair of plate-like members 114b form a pair of light-shielding portions 116 surrounding a hollow portion 116a when viewed in the x direction (yz plane) as shown in Fig. 49. The base plate 110 is provided with two hollow portions 116a and two light-shielding portions 116 that are spaced apart from each other in the x direction and are particularly disposed toward both ends of the base plate 110.

[0149] FIG. 48 shows the state where the base plate 110 on the left side of the figure is installed in accordance with the base plate 110' on the right side of the figure that has already been installed on the ceiling. The base plate 110' is properly positioned so that its longitudinal direction is along the x direction. When installing the base plate 110 on the ceiling, the position of the base plate 110 in the y direction is inspected using a laser light Lx that travels along the x direction. The laser light Lx is set so as to pass between each plate-like member 114b and the plate-like member 114 of the base plate 110' in the y direction.

[0150] When the position of the base plate 110 in the y direction is in a proper position that coincides with the position of the base plate 110' in the y direction, the laser light Lx passes between each plate-like member 114b of the base plate 110 and the plate-like member 114, i.e., through the hollow portion 116a. Conversely, when the laser light Lx does not pass between one or both of the plate-like members 114b and the plate-like member 114 of the base plate 110, the laser light Lx is blocked by the light blocking portion 116. This makes it possible to determine that the position of the base plate 110 in the y direction is deviated from the proper position.

[0151] Next, the operation of the LED lighting device A8 will be described below.

[0152] According to this embodiment, the position of the base plate 110 in the y direction can be adjusted so that the laser light Lx passes through both hollow portions 116a, thereby making the position of the base plate 110 in the y direction appropriate. Such an adjustment is performed, for example, by moving the base plate 110 in the y direction and visually checking whether the laser light Lx passes between both plate-like members 114b and the plate-like member 114. According to this adjustment, the laser light Lx is blocked by the light blocking portion 116 before and after the appropriate position is reached, so that the appropriate position of the base plate 110 can be found relatively easily. Therefore, when a plurality of LED lighting devices A8 are installed on a ceiling, the position of the base plate 110 in the y direction can be aligned relatively easily. Therefore, the positions of the wing portion 120 and the LED unit 2 attached under the base plate 110 are aligned, improving the appearance of the plurality of LED lighting devices A8 attached to the ceiling.

[0153] 50 to 52 each show a modified example of the light blocking portion 116. In FIG.

[0154] 50, a plate-like member 114c protruding leftward in the y direction is provided at the lower end of a plate-like member 114b. The left end of the long plate portion 113 in the figure, the plate-like member 114, the plate-like member 114b, and the plate-like member 114c form a light-shielding portion 116 that surrounds a hollow portion 116a when viewed in the x direction (yz plane).

[0155] According to this modified example, in addition to the position adjustment in the y direction, it is possible to perform position adjustment in the z direction in a similar manner.

[0156] 51 is provided with a light shielding portion 116 that protrudes downward from a long plate portion 113 and is formed in a substantially annular shape surrounding a hollow portion 116a when viewed in the x direction. Such a light shielding portion 116 has the same effect as the light shielding portion 116 shown in FIG.

[0157] The base plate 110 shown in Fig. 52 is provided with a light shielding portion 116 having a hole portion 116b corresponding to the hollow portion 116a. The light shielding portion 116 is provided at one end of the base plate 110 in the x direction. In addition to this, another light shielding portion 116 is provided at the other end in the x direction (not shown). These light shielding portions 116 are aligned with each other in the y direction. The light shielding portion 116 can be formed relatively easily, for example, by bending a plate piece protruding in the x direction from the long plate portion 113.

[0158] 52 is provided on both ends of the base plate 110 in the x direction, it is possible to adjust the position of the base plate 110 in the y and z directions more accurately than the light shielding portion 116 shown in Figures 50 and 51. Also, it can be formed relatively easily.

[0159] Fig. 53 shows an LED lighting device according to the ninth embodiment of the present invention. The LED lighting device A9 of this embodiment differs from the above-mentioned LED lighting device A7 mainly in the structure of the cover 4, but other configurations are similar to those of the LED lighting device A7, and therefore descriptions will be omitted as appropriate. Note that the configuration of the cover 4 in this embodiment and the modified examples can also be applied to the above-mentioned LED lighting devices A1, A3, and A5.

[0160] FIG. 54 shows an enlarged cross-sectional view of the cover 4 of the LED lighting device A9. The cover 4 shown in this figure is formed so that the central portion 43 is thicker than the surrounding area, but the other configurations are the same as the cover 4 of the LED lighting devices A1 to A8. As described in the explanation of the cover 4 of the LED lighting device A1, the cover 4 is a diffusion cover made of, for example, a milky white resin that diffuses and transmits the light from the LED module 20. The central portion 43 is a region having a certain width in the y direction and centered directly below the LED chip 22 in the z direction. The width of the central portion 43 in the y direction is formed to be longer than the width of the LED module 20 in the y direction. The central portion 43 corresponds to an example of a strong diffusion portion as referred to in the present invention.

[0161] In such a cover 4, the thicker the portion, the more the light is diffused, and the lower the light transmittance. Therefore, the light transmittance in the center portion 43 is smaller than that in the other regions. For example, the light transmittance in the center portion 43 is about 75%, and the light transmittance in the other regions is about 85%.

[0162] The cover 4 is formed so that the distance between the cover 4 and the LED module 20 is smallest at the central portion 43, and the distance between the cover 4 and the LED module 20 increases as the cover 4 moves away from the central portion 43 in the y direction. Therefore, the intensity of the light from the LED module 20 that reaches the central portion 43 is greater than the intensity of the light from the LED module 20 that reaches other regions.

[0163] According to the LED lighting device A9, by reducing the light transmittance in the central portion 43 where relatively strong light reaches, the light emitted from the central portion 43 and the light emitted from the other regions have approximately the same intensity. Therefore, when the LED lighting device A9 is turned on, it is possible to suppress unevenness in the light emitted from the cover 4, and it is possible to prevent the individual LED modules 20 from being visually recognized as being arranged in a dotted manner. This makes it possible to improve the appearance of the LED lighting device A9 when turned on.

[0164] Fig. 55 shows a modified example of the cover 4. In the cover 4 shown in Fig. 55, the central portion 43 is formed in a flat plate shape. Even when such a cover 4 is used, it is possible to suppress unevenness in the light emitted from the cover 4.

[0165] Fig. 56 shows another modified example of the cover 4. The cover 4 shown in Fig. 56 is formed so that its thickness gradually increases from the end toward the center in the y direction. Such a cover 4 is thicker at the portion closer to the LED module 20. This makes it possible to further reduce unevenness in the light emitted from the cover 4 when the LED lighting device A9 is turned on. This makes it possible to improve the appearance of the LED lighting device A9 when it is turned on.

[0166] Fig. 57 shows yet another modified example of the cover 4. The cover 4 shown in Fig. 57 has a uniform thickness, and the central portion 43 is formed of a milky white resin having a lower light transmittance than the other regions. The light transmittance of the regions other than the central portion 43 of the cover 4 is about 85%, and the light transmittance of the central portion 43 is about 75%. Even when such a cover 4 is used, it is possible to suppress unevenness in the light emitted from the cover 4, similar to the cover 4 shown in Figs. 54 to 56.

[0167] FIG. 58 shows yet another modified example of the cover 4. The cover 4 shown in FIG. 58 has a constant thickness, and the diffusing member 44 is provided so as to overlap the central portion 43. The light transmittance of the portion of the cover 4 where the diffusing member 44 is not provided is about 85%. The diffusing member 44 is made of, for example, the same milky white resin as the cover 4, and is formed so that the light transmittance of the central portion 43 where the diffusing member 44 is overlapped is about 75%. Even when the cover 4 provided with such a diffusing member 44 is used, it is possible to suppress unevenness in the light emitted from the cover 4. Furthermore, when the diffusing member 44 is prepared separately from the cover 4, there is an advantage that the manufacture of the cover 4 itself is easy.

[0168] 59 and 60 show an LED lighting device according to the tenth embodiment of the present invention. As shown in FIG. 59, the LED lighting device A10 of this embodiment is composed of a base plate 110 attached to a horizontal wall surface W, a wing portion 120 attached to the base plate 110, and an LED unit 2 attached to the wing portion 120. The LED lighting device A10 differs from the above-mentioned LED lighting device A7 mainly in the structure of the base plate 110, but other configurations are similar to the LED lighting device A7, and explanations will be omitted as appropriate. The configuration of the base plate 110 in this embodiment is also applicable to the above-mentioned LED lighting devices A1, A3, and A5. FIG. 61 and FIG. 62 show the state when the base plates 110 of two LED lighting devices A10 arranged along the x direction are attached to a wall surface W. The wall surface W is, for example, a ceiling surface.

[0169] The base plate 110 of this embodiment includes indicators 110b, 110c formed at both ends in the x direction, and a plurality of screw holes 112c arranged along the x direction. The indicators 110b, 110c and the plurality of screw holes 112c are all formed along a center line Cy that passes through the center of the base plate 110 in the y direction. The indicators 110b, 110c are wedge-shaped cutouts whose length in the y direction decreases as they move away from the end of the base plate 110 along the x direction. The indicators 110b, 110c are symmetrical with respect to the center line Cy, and the tip of the wedge is located at the center of the base plate 110 in the y direction.

[0170] The screw hole 112c is provided for passing the screw 132 through, and has a shape that is line-symmetrical with respect to the center line Cy when viewed in the z direction. Furthermore, as shown in Fig. 62, the screw hole 112c is integrally formed with the indicator portion 112d. The indicator portion 112d has a shape that is line-symmetrical with respect to the center line Cy, and is wedge-shaped like the indicator portions 110b and 110c.

[0171] The following describes the process of attaching the base plates 110 of the two LED lighting devices A10 to the wall surface W. The two base plates 110 may be attached to the wall surface W one after the other, or may be attached simultaneously.

[0172] First, a step of forming a straight line indicator Lw extending along the x direction is performed on the wall surface W. The straight line indicator Lw can be formed by drawing a straight line on the wall surface W with, for example, an oil-based or water-based pen.

[0173] Next, as shown in Fig. 61, a step of attaching the base plate 110 to the wall surface W using the screw 132 is performed. In this step, first, as shown in Fig. 62, the base plate 110 is pressed against the wall surface W so that the linear indicator Lw is visible from the indicator portions 110b, 110c, and 112d. Next, the position of the base plate 110 in the y direction is adjusted so that the corner portions of the indicator portions 110b, 110c, and 112d overlap with the linear indicator Lw. Thereafter, as shown in Fig. 61, the screw 132 is passed through the screw hole 112c and screwed into the wall surface W, thereby attaching the base plate 110 to the wall surface W.

[0174] In such an LED lighting device A10, by aligning the positions of the indicator parts 110b, 110c, and 112d with the linear indicator Lw as described above, the arrangement of the base plate 110 can be adjusted so that the center line Cy coincides with the linear indicator Lw. Therefore, when multiple base plates 110 are attached, the orientations of the respective base plates 110 can be aligned as shown in Figures 61 and 62. Therefore, when multiple LED lighting devices A10 are installed on a wall surface W, the orientations of the multiple LED lighting devices A10 are aligned, resulting in a better appearance.

[0175] Another embodiment of the indicator portion 110c is shown in Figure 63. It should be noted that the indicator portions 110b and 112d may also have a similar shape, not limited to the indicator portion 110c.

[0176] The indicator portion 110c shown in Fig. 63 is formed so that the shape of the indicator portion 110c as viewed in the z direction becomes larger as it gets farther away from the mounting surface 110a in the z direction. The shape of the indicator portion 110c is designed to make it easier for an operator to check the overlap between the indicator portion 110c and the straight line indicator Lw even from diagonally below when mounting the LED lighting device A10 on the ceiling.

[0177] Figures 64 to 66 show further examples of the indicator portions 110b, 110c. The indicator portions 110b, 110c shown in Figure 64 are formed as convex portions protruding in the x direction from both ends of the base plate 110. The indicator portions 110b, 110c shown in Figure 65 are drawn on both ends of the base plate 110 and have a linear shape. The indicator portions 110b, 110c shown in Figure 66 are drawn on both ends of the base plate 110 and have a triangular shape.

[0178] FIG. 67 shows an LED lighting device based on the eleventh embodiment of the present invention. The LED lighting device A11 of this embodiment differs from the LED lighting device A7 described above mainly in the configuration of the LED unit 2, but other configurations are similar to the LED lighting device A7, and the description will be omitted as appropriate. The configuration of the LED unit 2 in this embodiment is also applicable to the LED lighting devices A1, A3, and A5 described above. FIG. 68 shows a perspective view of the main part of the LED unit 2 of the LED lighting device A11, and FIG. 69 shows a cross-sectional view showing the main part cross-section shown in FIG. 68 in more detail. The LED unit 2 shown in FIG. 68 and FIG. 69 includes an illuminance confirmation LED chip 20a, a notification LED chip 20b, and a detection means 54 in addition to the configuration of the LED unit 2 shown in FIG. 4. In FIG. 68, the electronic component 53 is omitted. Furthermore, FIG. 70 shows a simplified block diagram of an example of wiring installed on the power supply board 52 and the board 31. 70, the power supply board 52 includes, in addition to the illuminance confirmation LED chip 20a and detection means 54 already described, a transformer T that converts AC voltage from the AC power supply E into DC voltage, switches S1 and S2, voltage detection means 55, resistors 56a and 56b, and an adjustment resistor 57. The transformer T, switches S1 and S2, voltage detection means 55, resistors 56a and 56b, and adjustment resistor 57 are included in the electronic components 53 in FIG. 69. Other configurations of the LED unit 2 shown in FIGS. 68 and 69 are the same as those of the LED unit 2 shown in FIG. 4, and therefore descriptions thereof will be omitted as appropriate.

[0179] As shown in Fig. 69, the LED chip 20a for confirming illuminance is mounted on the side of the power supply substrate 52 opposite to the main emission direction of the LED module 20 in the z direction. Preferably, the LED chip 20a for confirming illuminance is installed in the center of the power supply substrate 52 in the x direction. The LED chip 20a for confirming illuminance is of the same type as the LED chip 22, and is installed in parallel with each row of the multiple LED chips 22 as shown in Fig. 70.

[0180] The detection means 54 is composed of a photoelectric conversion element such as a photodiode or a phototransistor that generates a voltage according to the received light. The detection means 54 is mounted on the power supply board 52 on the side opposite to the main emission direction of the LED module 20 in the z direction, and is disposed at the same position in the x direction as the illuminance confirmation LED chip 20a, but spaced apart in the y direction. The detection means 54 receives light from the illuminance confirmation LED chip 20a, and outputs a voltage according to the illuminance to the voltage detection means 55.

[0181] 69, case 51 having a U-shaped cross section with a bottom portion facing upward in the z direction is fitted into housing space 32a formed by bracket 32 ​​having a U-shaped cross section with a bottom portion facing downward in the z direction. Therefore, the inside of case 51 is isolated from the outside in the yz plane.

[0182] The notification LED chip 20b is mounted on the substrate 31 and emits, for example, red light. The position of the notification LED chip 20b may be anywhere on the substrate 31. When the switches S1 and S2 are ON, the notification LED chip 20b receives power from the power supply substrate 52 and lights up. In addition, a resistor 56b is installed in series with the notification LED chip 20b so that a large voltage is not applied to the notification LED chip 20b. This resistor 56b is formed to have the same resistance as, for example, eleven LED chips 22 connected in series.

[0183] The switch S1 is a switch for switching ON / OFF of the multiple LED modules 20, and can be switched ON / OFF from the outside. According to Fig. 70, when the switch S1 is turned ON, the illuminance confirmation LED chip 20a is also turned on at the same time.

[0184] The resistor 56a is disposed in series with the LED chip 20a for confirming illuminance. As described in the LED lighting device A1, the LED chips 22 are arranged in a set of 12 chips connected in series. The resistor 56a is provided to make the voltage applied to the LED chip 20a for confirming illuminance approximately the same as the voltage applied to one LED chip 22, and is formed to have the same resistance as, for example, 11 LED chips 22 connected in series. When a heat generating resistor is used as the resistor 56a, it is preferable to place it at a position physically separated from the LED chip 20a for confirming illuminance so that the heat generated during driving is unlikely to affect the LED chip 20a for confirming illuminance.

[0185] The adjusting resistor 57 is arranged in series with the illuminance confirmation LED chip 20a and the resistor 56a. The adjusting resistor 57 is provided to further adjust the voltage applied to the illuminance confirmation LED chip 20a. The power supply board 52 and the board 31 that hold the illuminance confirmation LED chip 20a are both formed of glass epoxy resin, but the board 31 is held by an aluminum base part 321 and has a better heat dissipation function than the power supply board 52. Therefore, even if the same voltage as each LED chip 22 is applied to the illuminance confirmation LED chip 20a, the illuminance confirmation LED chip 20a becomes hotter than each LED chip 22 due to the difference in heat dissipation. This causes a difference in the degree to which the characteristics of the two change. Therefore, in order to make the change speed of the illuminance confirmation LED chip 20a the same as that of the LED chip 22, it is necessary to adjust the voltage applied to the illuminance confirmation LED chip 20a to be lower. Taking the above into consideration, the resistance value of the adjustment resistor 57 is adjusted so that the rate of change of the illuminance confirmation LED chip 20 a is approximately the same as the rate of change of the LED chip 22 .

[0186] The voltage detection means 55 functions to turn on the switch S2 when the voltage output from the detection means 54 falls below a predetermined voltage value. When the switch S1 is on and the switch S2 is on, power is supplied to the notification LED chip 20b. The above-mentioned predetermined voltage value is set to, for example, a% of the voltage value output by the detection means 54 according to the illuminance of the illuminance confirmation LED chip 20a immediately after the start of use (α<100).

[0187] In such an LED lighting device A11, as described above, the inside of the case 51 is sealed off from the outside. Therefore, the detection means 54 is not affected by light from the outside and the light from the LED module 20. Therefore, the detection means 54 detects only the light from the illuminance confirmation LED chip 20a, and can output a voltage corresponding to the illuminance of the illuminance confirmation LED chip 20a to the voltage detection means 55 more accurately.

[0188] The illuminance confirmation LED chip 20a also changes at approximately the same speed as the change in the LED chip 22. As the change in the illuminance confirmation LED chip 20a progresses, the amount of light received by the detection means 54 gradually decreases, and the voltage detected by the voltage detection means 55 decreases. Then, when the voltage detected by the voltage detection means 55 becomes α% or less of the initial voltage, the switch S2 turns ON, and when the LED lighting device A11 is turned on, the notification LED chip 20b also lights up at the same time.

[0189] In this way, when the characteristics of the LED chip 22 change to such an extent that replacement of the LED unit 2 is necessary, the notification LED chip 20b lights up. This allows the user to easily know that it is necessary to replace the LED unit 2. Therefore, in the LED lighting device A11, the LED unit 2 can be replaced at an appropriate time, and good-looking lighting can be provided at all times.

[0190] Furthermore, in this embodiment, the LED module 20 emits white light, whereas the notification LED chip 20b emits red light. Therefore, when the notification LED chip 20b is turned on, the red light is visible and stands out, so that the user can easily notice that it is time to replace the LED chip. The color of the notification LED chip 20b is not limited to red, and may be another color.

[0191] In the above LED lighting device A11, the adjustment resistor 57 is provided to match the change rate of the illuminance confirmation LED chip 20a with the change rate of the LED chip 22, but it is also possible to implement the device without the adjustment resistor 57. Even in this case, the illuminance confirmation LED chip 20a lights up at the same time as the LED chip 22, so the change rate of the illuminance confirmation LED chip 20a is proportional to the change rate of the LED chip 22. Therefore, by knowing the degree of change of the illuminance confirmation LED chip 20a with the detection means 54, it is possible to estimate the degree of change of the LED chip 22. Therefore, for example, by adjusting the value of α to be lower than the above-mentioned value, it is possible to light the notification LED chip 20b when the LED chip 22 has changed to the extent that replacement is necessary.

[0192] In addition, in the LED lighting device A11, the resistor 56a is provided to adjust the voltage applied to the illuminance confirmation LED chip 20a to the voltage applied to each LED chip 22, but it is also possible to connect, for example, 12 illuminance confirmation LED chips 20a in series without providing the resistor 56a.

[0193] FIG. 71 shows an LED lighting device based on the twelfth embodiment of the present invention. The LED lighting device A12 of this embodiment differs from the LED unit A3 described above mainly in the configuration of the LED unit 2, but other configurations are similar to the LED lighting device A3, and description thereof will be omitted as appropriate. The configuration of the LED unit 2 in this embodiment is also applicable to the LED lighting devices A1 and A5 described above. FIG. 72 shows a side view of a plurality of LED units 2 arranged along the x direction. The LED unit 2 shown in FIG. 72 and FIG. 73 includes a pair of connectors 34a, 34b and a group of electric wires 36 connecting the pair of connectors 34a, 34b and the power supply board 52, instead of the connector 34 and the wiring connected thereto in the LED unit 2 shown in FIG. 3. Other configurations of the LED unit 2 shown in FIG. 72 and FIG. 73 are similar to the LED unit 2 shown in FIG. 3, and description thereof will be omitted as appropriate.

[0194] The electric wire group 36 includes a main electric wire 361 extending along the x direction and a connecting wire 362. The main electric wire 361 is a resin cable including a power line 361a for supplying power to the power supply board 52 and a signal line 361b for transmitting a signal for instructing the power supply board 52 to turn on and off or adjust brightness, for example. The main electric wire 361 may be used only for supplying power. As shown in FIG. 73, the main electric wire 361 is disposed in the lower right corner of the case 51. Both ends of the main electric wire 361 in the x direction protrude outward from both ends of the case 51 in the x direction. The connecting wire 362 is a resin cable having its lower end connected to the main electric wire 361 in FIG. 73 and incorporating electric wires extending from each of the power line 361a and the signal line 361b. The upper end of the connecting wire 362 in the figure is connected to the power supply board 52 via the connector 34c.

[0195] The connector 34a is formed of, for example, resin in a rectangular parallelepiped shape having a recess in the center. Inside the recess provided in the connector 34a, electrodes connected to the power line 361a and the signal line 361b are provided. According to FIG. 72, the connector 34a is connected to the left end of the main electric wire 361 in the x direction. On the other hand, the connector 34b is made of, for example, resin, is formed to have a protrusion that fits into the recess of the connector 34a, and is connected to the right end of the main electric wire 361 in the x direction. The protrusion provided in the connector 34b is provided with electrodes connected to the power line 361a and the signal line 361b. Furthermore, according to FIG. 72, the connector 34a is fitted with the connector 34b connected to the right end of the main electric wire 361 of the adjacent LED unit 2.

[0196] When the LED unit 2 is used alone and not arranged in the x direction, the connectors 34a and 34b are connected to a power supply source built into the ceiling, for example. When multiple LED units 2 are arranged in the x direction, the connectors 34a and 34b of the LED units 2 located at both ends in the x direction that are not used for connection to other LED units 2 are connected to the power supply source.

[0197] In the case of fluorescent lamps and conventional LED lighting devices X, the electric wires are not exposed to the outside because they are attached to a general-purpose fluorescent lighting fixture installed on the ceiling or the like in advance. On the other hand, in the LED lighting device A12, power is supplied to the LED unit 2 through the electric wire group 36. Unlike this embodiment, if the electric wire group 36 is exposed to the outside, the appearance of the entire LED lighting device A12 will be impaired. In this embodiment, the electric wire group 36 is accommodated in a space surrounded by the case 51 and the base part 321. Therefore, only the connection part with the connectors 34a and 34b of the electric wire group 36 is visible from the outside. Therefore, in the LED lighting device A12, the exposure of the electric wire group 36 to the outside is minimized, making it possible to obtain a more attractive appearance.

[0198] Furthermore, according to this embodiment, the electric wire group 36 is mostly housed in the LED unit 2, so that it is unlikely to be an impediment to the work of attaching the LED unit 2 to the mount 1 or detaching the LED unit 2 from the mount 1. Therefore, in the LED lighting device A12, it is possible to easily and quickly replace the LED unit 2.

[0199] Furthermore, when multiple LED lighting devices A12 are installed side by side in the x direction, adjacent LED units 2 can be easily electrically connected to each other by joining the connectors 34a and 34b as shown in FIG. 72, without providing new electric wires.

[0200] Furthermore, according to this embodiment, the main electric wire 361 is disposed at a position relatively distant from the power supply board 52 and the electronic components 53 inside the case 51. Therefore, interference between the current flowing through the main electric wire 361 and the power supply board 52 and the electronic components 53 can be suppressed.

[0201] FIG. 74 shows an LED lighting device according to the thirteenth embodiment of the present invention. The LED lighting device A13 of this embodiment differs from the above-mentioned LED lighting device A12 mainly in the arrangement and holding means of the electric wire group 36, but other configurations are similar to the LED lighting device A12, and explanations will be omitted as appropriate. The configuration of the LED unit 2 in this embodiment is also applicable to the above-mentioned LED lighting devices A1, A3, and A5. FIG. 75 shows a cross-sectional view of the LED unit 2 of the LED lighting device A13. The LED unit 2 shown in FIG. 74 and FIG. 75 holds the electric wire group 36 by the holder 51b provided on the case 51, and a part of the base part 321 is deformed, but other configurations are similar to the LED unit 2 shown in FIG. 71 to FIG. 73, and explanations will be omitted as appropriate.

[0202] The holder 51b is formed on the outer side of the upper part of the case 51 in FIG. 75, and is a metal fitting that clamps and fixes the main electric wire 361 between the holder 51 and the upper part of the case 51. In this embodiment, a plurality of holders 51b are arranged along the x direction. In this embodiment, the base portion 321 is formed so that its upper end in the z direction is higher in the z direction than the upper end of the holder 51b. The coupling wire 362 passes through the upper part of the case 51 and is connected to the upper side of the power supply board 52 in the figure via the connector 34c.

[0203] In the LED lighting device A13, like the LED lighting device A12, the wire group 36 is not easily visible from the outside, making it possible to realize a more attractive appearance. Furthermore, in this embodiment, the main wire 361 is arranged outside the case 51, so that interference between the current flowing through the main wire 361 and the power supply board 52 and the electronic components 53 can be prevented.

[0204] FIG. 76 shows an LED lighting device according to the 14th embodiment of the present invention. The LED lighting device A14 of this embodiment differs from the LED lighting device A12 described above in the configuration of the bracket 32 ​​and the arrangement of the electric wire group 36, but the other configuration is the same as the LED lighting device A12, and the description will be omitted as appropriate. The configuration of the bracket 32 ​​in this embodiment is also applicable to the LED lighting devices A1, A3, and A5 described above. FIG. 77 shows a cross-sectional view of the LED unit 2 of the LED lighting device A14. In the LED unit 2 shown in FIG. 76 and FIG. 77, the base part 321 and the outer part 322 are integrated, and the main electric wire 361 is accommodated in the recess 32b provided in the bracket 32. The other configuration is the same as the LED unit 2 shown in FIG. 71 to FIG. 73, and the description will be omitted as appropriate.

[0205] The bracket 32 ​​in Fig. 77 has a shape in which the base portion 321 and the outer portion 322 in Fig. 73 are integrated. However, the edge of the outer portion 322 shown in Fig. 73 is formed so as to overlap the side edge of the board 31 when viewed in the z direction, but the bracket 32 ​​in Fig. 77 has a shape in which that portion has been removed. The recess 32b is formed on the side portion of the bracket 32 ​​on the right side in Fig. 77 so as to be recessed in the y direction. The connecting wire 362 in Fig. 77 passes through the right side portion of the case 51 in Fig. 77 and is connected to the underside of the power supply board 52 via the connector 34c.

[0206] In the LED lighting device A14, like the LED lighting device A12, the wire group 36 is not easily visible from the outside, making it possible to realize a more attractive appearance. Furthermore, in this embodiment, the main wire 361 is arranged outside the case 51, so that interference between the current flowing through the main wire 361 and the power supply board 52 and the electronic components 53 can be prevented.

[0207] Fig. 78 shows an LED lighting device according to the fifteenth embodiment of the present invention. The LED lighting device A15 of this embodiment has a holder 14 instead of the holder 11, but other configurations are the same as the LED lighting device A3, and the description will be omitted as appropriate. Fig. 79 shows a perspective view of the holder 14, and Fig. 80 shows a front view, a side view, and a plan view of the holder 14. The configuration of the holder 14 of this embodiment is also applicable to the above-mentioned LED lighting devices A1 and A5.

[0208] Similarly to the holder 11, the holder 14 is formed by bending a metal plate, for example, and has a pair of locking pieces 14a, a pair of flexible parts 14b, a base part 14c, a bending part 14e, and a bending part 14f. The bending parts 14e and 14f are parts formed by bending the metal plate. Unlike the holder 11, the holder 14 is cut out of a part of the metal plate before bending. This cutting process forms a notch 14d in the holder 14. The bending part 14e is divided in the x direction in FIG. 79 by the notch 14d. The length of the notch 14d in the x direction is set so that the length of the bending part 14e in the x direction is the same as the length of the bending part 14f in the x direction.

[0209] As shown in FIG. 79 and FIG. 80, the base portion 14c supports a pair of flexible portions 14b via a bent portion 14e. The flexible portions 14b are shaped to support the locking pieces 14a via a bent portion 14f. When an external force is applied to the pair of flexible portions 14b, the pair of locking pieces 14a can be elastically deformed in a direction to move the pair of locking pieces 14a closer to each other and farther away from each other. The pair of locking pieces 14a are portions that engage with the LED unit 2, and are inclined so that the distance between them becomes smaller as they move upward in FIG. 80(a). In this embodiment, a plurality of holders 14 are provided in the recess 10a. Each locking piece 14a is provided with a protruding portion 14g. The protruding portion 14g protrudes toward the base portion 14c in the inclination direction of the locking pieces 14a. This protruding portion 14g is a portion where the locking pieces 14a are directly locked to the locking groove 323 of the support member 3.

[0210] In the holder 11 shown in FIG. 9, the portion corresponding to the bent portion 14e in the holder 14 is longer and more rigid than the portion corresponding to the bent portion 14f in the holder 14. Therefore, in the holder 11, the portion corresponding to the bent portion 14e in the holder 14 is less likely to bend than the portion corresponding to the bent portion 14f in the holder 14. As a result, when an external force is applied to the pair of flexible parts 11b, the portion corresponding to the bent portion 14f in the holder 14 is deformed relatively significantly, and this portion may be plastically deformed. This may cause the orientation of the LED unit 2 held by the holder 11 to shift, which may lead to a deterioration in appearance.

[0211] In contrast, in the holder 14, the notch 14d is provided, so that the length of the bent portion 14e in the x direction is the same as the length of the bent portion 14f in the x direction. Therefore, there is no difference in the ease of deformation between the bent portion 14e and the bent portion 14f, and when an external force is applied to the pair of flexible portions 14b, the bent portion 14e and the bent portion 14f are evenly deformed. Therefore, in the holder 14, there is little risk that only one of the bent portion 14e and the bent portion 14f will be excessively plastically deformed. Therefore, the holder 14 can stably hold the LED unit 2 for a longer period of time, and the LED lighting device A15 can maintain a more preferable appearance for a longer period of time.

[0212] In the above-described holder 14, the notch 14d is formed in both the flexible portion 14b and the base portion 14c, but it is also possible to form the notch 14d only in either the flexible portion 14b or the base portion 14c. The present invention is also effective in the case where only one locking piece 14a and one flexible portion 14b are provided, as in the case of the holder 13.

[0213] Fig. 81 to Fig. 85 show an LED lighting device according to the sixteenth embodiment of the present invention. As shown in Fig. 81 and Fig. 82, the LED lighting device A16 of this embodiment is L-shaped in a plan view and is formed so as to be line-symmetrical with respect to a center line Cxy that is inclined at 45° with respect to the x and y directions.

[0214] The mount 1 is composed of a first support 10A extending in the x direction, a second support 10B extending in the y direction, a plurality of holders 11 attached to appropriate positions of the first and second supports 10A and 10B, and two caps 126. Figure 86 shows a plan view, a side view, and a bottom view of the first support 10A.

[0215] The first support 10A is composed of a base plate 110 and a wing portion 120. The base plate 110 is formed in an elongated plate shape with the x direction as the longitudinal direction and the y direction as the width direction, and is provided with a plurality of screw holes 112. The wing portion 120 has a bottom plate portion 121, two wall portions 122, and two arch-shaped portions 123, and is made of an opaque material, such as resin or aluminum. The bottom plate portion 121 is formed in an elongated plate shape that is wider than the base plate 110 when viewed in the z direction. In this embodiment, the bottom plate portion 121 is integrated with the base plate 110. The two wall portions 122 stand in the z direction from both ends of the bottom plate portion 121 in the y direction. The bottom plate portion 121 and the two wall portions 122 form a recess 10a for accommodating the LED unit 2. The two arched portions 123 extend from the lower ends of the two walls 122 in the z direction and are disposed on either side of the recess 10a. The arched portion 123 in this embodiment has a flatter shape than the arched portion 123 in the LED lighting device A3. Furthermore, the upper arched portion 123 in FIG. 86 is formed to be longer than the lower arched portion 123. According to FIG. 86, the left ends of the upper and lower arched portions 123 are aligned, but the right ends are different. The right end of the upper arched portion 123 in FIG. 86 is located to the right of the right end of the lower arched portion 123. The line connecting the right ends of the upper and lower arched portions 123 is inclined at 45° with respect to the longitudinal direction of the first support 10A.

[0216] The second support 10B is the first support 10A with its top and bottom reversed in Fig. 86. As shown in Fig. 81, the shorter arched portion 123 of the second support 10B is in contact with the shorter arched portion 123 of the first support 10A. Also, the longer arched portion 123 of the second support 10B is in contact with the longer arched portion 123 of the first support 10A.

[0217] As shown in Figures 81 and 82, each cap 126 is a member that covers the end portions of the first and second supports 10A and 10B that are not in contact with each other in the longitudinal direction. Figure 91 shows a front view, a side view, and a plan view of the cap 126. The cap 126 has a plate portion 126a for fixing to the bottom plate portion 121.

[0218] According to FIG. 81, the LED unit 2 is attached to each of the first support 10A and the second support 10B. The LED unit 2 supported by the first support 10A forms a first light-emitting portion 2A extending along the x direction, and the LED unit 2 supported by the second support 10B forms a second light-emitting portion 2B extending along the y direction. As shown in FIG. 83, each LED unit 2 includes a plurality of LED modules 20, a support member 3, a cover 4, and a power conversion unit 5. FIG. 84 shows an enlarged view of the intersection of the first and second light-emitting portions 2A and 2B, and FIG. 85 shows an enlarged view of the end of the second support 10B farther from the first support 10A. In FIG. 84 and FIG. 85, a part or all of the cover 4 is omitted.

[0219] In this embodiment, the LED modules 20 are arranged in two rows as shown in Fig. 83 to Fig. 85. Each LED module 20 is the same as that shown in Fig. 5.

[0220] The support member 3 is for supporting the multiple LED modules 20 and supplying power thereto, and is made up of a substrate 31, a bracket 32, and caps 331 and 332.

[0221] In this embodiment, as shown in FIG. 84, a wiring group 311 is provided to electrically connect the substrates 31 of the first and second light-emitting units 2A and 2B to each other.

[0222] FIG. 87 shows a plan view and left and right side views of the bracket 32 ​​of the second light-emitting unit 2B. The left side view of the bracket 32 ​​in FIG. 87 shows the left side in FIG. 84, and the right side view shows the right side in FIG. 84. As shown in FIG. 87, one end face in the longitudinal direction of the bracket 32 ​​is a face perpendicular to the longitudinal direction, and the other end face is a face that is inclined so as to protrude toward the right in the figure as it moves upward in the figure. This inclined face is inclined at 45° with respect to the longitudinal direction. The bracket 32 ​​has a U-shaped cross section, and the substrate 31 is attached to the outside of the bottom surface. The bracket 32 ​​also has locking grooves 323, 324, and 325 similar to those of the bracket 32 ​​of the LED lighting device A3.

[0223] Each of the substrates 31 is formed in an elongated rectangular shape extending along the longitudinal direction of each of the brackets 32 .

[0224] As shown in FIG. 85, the cap 331 is attached to the end of each bracket 32 ​​that is not inclined in the longitudinal direction. FIG. 89 shows a front view, a side view, and a front view showing the state before attachment of the cap 331. According to FIG. 89, the cap 331 has a pair of bendable plate parts 331a. The pair of plate parts 331a is formed so as to sandwich both side surfaces of the bracket 32 ​​when folded. Furthermore, the pair of plate parts 331a has screw through holes, and can be fixed to both side surfaces of the bracket 32 ​​by screws. The lower part of the cap 331 in FIG. 89 has a shape corresponding to the end of the cover 4. The cap 331 covers the ends of each bracket 32 ​​and the cover 4, thereby preventing the inside of the LED lighting device A16 from being seen from the outside.

[0225] As shown in FIG. 84, the cap 332 is attached to the inclined end of each bracket 32 ​​in the longitudinal direction. FIG. 90 shows a front view, a side view, a plan view, and a front view showing a state before attachment of the cap 332. The front view in FIG. 90 is a front view seen from a direction perpendicular to the center line Cxy in FIG. 84, and the plan view is a view seen in the z direction. This cap 332 has a shape in which the cap 331 is stretched in a direction inclined by 45°. The cap 332 has a pair of plate parts 332a and a hole part 332b for passing the wiring group 311. The pair of plate parts 332a are formed so as to sandwich both side surfaces of the bracket 32 ​​in a bent state. Furthermore, the pair of plate parts 332a are formed with screw through holes, and can be fixed to both side surfaces of the bracket 32 ​​by screws.

[0226] As shown in FIG. 81, the cover 4 of the LED unit 2 forming the first light-emitting part 2A is formed so that the end on the left side in the figure is inclined at 45° with respect to the x direction. FIG. 88 shows an enlarged side view of this inclined end. The other configurations of the cover 4 of this embodiment are similar to those of the cover 4 in the LED lighting device A3. Such a cover 4 can be formed, for example, by cutting the cover 4 in the LED lighting device A3 so as to obtain a cut surface inclined at 45° with respect to the longitudinal direction. On the other hand, the cover 4 of the LED unit 2 forming the second light-emitting part 2B is formed so that the end on the upper side in FIG. 81 is inclined at 45° with respect to the y direction and faces the inclined end surface of the cover 4 in the first light-emitting part 2A.

[0227] Each LED unit 2 of the first and second light emitting parts 2A and 2B is provided with a power conversion unit 5. Each power conversion unit 5 is similar to that in the LED lighting device A3, except for the details of the case 51. FIG. 92 shows a side view, a front view, and a plan view of the main part of the case 51 in this embodiment, and FIG. 93 shows an exploded view. The front view of the case 51 is a view in the longitudinal direction of each LED unit 2, and the plan view is a view in the z direction. This case 51 is made of metal, for example, and is formed into a U-shaped cross section. Furthermore, the case 51 has a plurality of cutouts 51a and folded-in parts 51c and 51d for holding the power supply board 52.

[0228] Next, the operation of the LED lighting device A16 will be described.

[0229] The LED lighting device A16 is expected to be attached to a ceiling for use, for example, in the same manner as the LED lighting device A3. As described above, the LED lighting device A16 is L-shaped, so it is suitable for installation along the corner of a ceiling or along a pillar.

[0230] When an L-shaped illumination is required, it is possible to arrange two conventional fluorescent lamps or LED illumination devices A3 in an L-shape. However, in such a case, the intersection of the two fluorescent lamps or LED illumination devices A3 does not emit light, and furthermore, it may give a viewer an impression of clutteredness, resulting in a poor appearance. In contrast, in the LED illumination device A16, as shown in FIG. 81, the intersection of the first and second light-emitting parts 2A and 2B is covered with a cover 4, so that it is less likely to give a viewer an impression of clutteredness. Therefore, the LED illumination device A16 looks better than a case where linear light sources are simply arranged to intersect in an L-shape.

[0231] In this embodiment, the substrates 31 in the first and second light-emitting units 2A and 2B are conductively connected by a wiring group 311. Therefore, one external power source is sufficient to light up both the first and second light-emitting units 2A and 2B.

[0232] In this embodiment, the cap 332 is sandwiched between the covers 4 of the first and second light-emitting units 2A and 2B, but the covers 4 may be in contact with each other without the cap 332. Alternatively, the covers 4 of the first and second light-emitting units 2A and 2B may be integral with each other.

[0233] 94 shows an LED lighting device according to the seventeenth embodiment of the present invention. The LED lighting device A17 of this embodiment has a different shape of the end of the substrate 31 from the LED lighting device A16, but other configurations are the same as the LED lighting device A16.

[0234] According to Fig. 94, the end of the substrate 31 of this embodiment is inclined to follow the inclination of the end of the bracket 32. That is, each substrate 31 of this embodiment has an additional portion 31a having a triangular shape in a plan view added to the end of each substrate 31 shown in Fig. 84. As shown in Fig. 94, a plurality of LED modules 20 are arranged in each additional portion 31a so as to be aligned along a circular arc and to be line-symmetrical with respect to the center line Cxy.

[0235] In the LED lighting device A17, since a plurality of LED modules 20 are arranged in the additional portion 31a provided at the intersection of the L shape, the intersection of the L shape also emits light. Therefore, the LED lighting device A17 does not lose light intensity at the intersection of the L shape, and can further improve the appearance when lit.

[0236] Furthermore, in this embodiment, the LED modules 20 of each additional portion 31a are linearly symmetrical about the center line Cxy, thereby preventing one of the first and second light-emitting sections 2A, 2B from being unevenly bright, resulting in a better appearance.

[0237] 95 shows an LED lighting device according to the eighteenth embodiment of the present invention. The LED lighting device A18 of this embodiment differs from the LED lighting device A16 in the structure of the L-shaped intersection, but other configurations are similar to the LED lighting device A16.

[0238] In the LED lighting device A18, an additional board 31b having a rectangular shape in plan view is provided at the intersection of the L-shape. The additional board 31b is supported by both brackets 32 extending in the x and y directions. In order to mount the additional board 31b on the bracket 32, in this embodiment, the cap 332 has a shape in which the lower half in FIG. 90(a) is removed. Although omitted in FIG. 95 for simplification, the additional board 31b is conductively connected to both boards 31 by a wiring group.

[0239] The additional substrate 31b is mounted with a plurality of LED modules 20. These LED modules 20 are arranged, for example as shown in Fig. 95, so as to be symmetrical with respect to the center line Cxy.

[0240] In such an LED lighting device A18, the additional board 31b is installed at the intersection of the L shape, and the additional board 31b is equipped with the LED module 20, so that the intersection of the L shape also emits light. Therefore, the intersection of the L shape does not become dark, and it is possible to further improve the appearance.

[0241] In this embodiment, the additional substrate 31b is independent of both substrates 31, but the additional substrate 31b may be integrated with either of the substrates 31. Furthermore, a substrate having an L-shape in plan view in which both substrates 31 and the additional substrate 31b are integrated may be used.

[0242] 96 shows an LED lighting device according to the 19th embodiment of the present invention. The LED lighting device A19 of this embodiment has a board 31' that is longer than the board 31 in the second light-emitting section 2B instead of the additional board 31b, and the other configurations are the same as those of the LED lighting device A18.

[0243] In this embodiment, for example, the LED modules 20 are arranged along the y direction over the entire longitudinal length of the substrate 31'. Even in this LED lighting device A18, the L-shaped intersections emit light, making it possible to further improve the appearance.

[0244] 97 to 102 show an LED lighting device according to the twentieth embodiment of the present invention. The LED lighting device A20 of this embodiment is mainly different from the above-mentioned LED lighting device in that the wing portion 120 is provided with a pair of outer covers 127 and that the wing portion 120 is directly attached to the attachment surface Ro without the base plate 110. However, other configurations are similar, and explanations will be omitted as appropriate. FIG. 97 shows a perspective view of the main part of the LED lighting device A20. FIG. 98 shows a cross-sectional view of the LED lighting device A20 shown in FIG. 97. FIG. 99 shows a front view of the wing portion 120, FIG. 100 shows a plan view of the wing portion 120, FIG. 101 shows a side view of the wing portion, and FIG. 102 shows a bottom view of the wing portion 120. The configuration of the present embodiment with the outer cover 127 can be applied to all the above-mentioned LED lighting devices with the wing portion 120.

[0245] Each of the outer covers 127 is connected to an end of the wall portion 122 in the y direction. The two outer covers 127 are disposed on either side of the recess 10a. Since the two outer covers 127 are symmetrical with respect to the recess 10a, only one of the outer covers 127 will be described below, and a description of the other outer cover 127 will be omitted.

[0246] The outer cover 127 has an outer surface 127a. The outer surface 127a includes a first surface 127b, a second surface 127c, and a third surface 127d. A boundary 127f between the first surface 127b and the second surface 127c is a straight line extending along the x direction. A boundary 127g between the second surface 127c and the third surface 127d is a straight line extending along the x direction. The outer surface 127a is bent at the boundary 127f and the boundary 127g.

[0247] The first surface 127b has an edge 127e facing the mounting surface Ro, and is a mirror surface. The first surface 127b is strip-shaped extending along the x-direction in a plan view. Furthermore, the first surface 127b is planar. In this embodiment, the first surface 127b extends from the edge 127e in a vertical direction (i.e., in the z-direction) relative to the mounting surface Ro. The dimension of the first surface 127b in the z-direction is, for example, 5 mm.

[0248] The second surface 127c is connected to the first surface 127b at the boundary 127f. The second surface 127c is a strip extending along the x-direction in a plan view. Furthermore, the second surface 127c is planar. As described above, the outer surface 127a is bent at the boundary 127f. Therefore, the second surface 127c is inclined with respect to the first surface 127b. The second surface 127c is, for example, a matte surface. In order to make the second surface 127c a matte surface, for example, a hairline finish is applied. The dimension of the second surface 127c in the z-direction is, for example, 24 mm. The dimension of the second surface 127c in the y-direction is, for example, 15 mm.

[0249] The third surface 127d is connected to the second surface 127c at the boundary 127g. The third surface 127d is a strip extending along the x direction in a plan view. Furthermore, the third surface 127d is a flat mirror surface. The third surface 127d has an edge 127h facing the LED unit 2. As described above, the outer surface 127a is bent at the boundary 127g. Therefore, the third surface 127d is inclined with respect to the second surface 127c. In this embodiment, the third surface 127d has a shape that extends in the xy plane. The dimension of the third surface 127d in the y direction is, for example, 2 mm.

[0250] A plurality of screw holes 120h are formed in the wing portion 120. Screws (not shown) are screwed into these screw holes 120h to attach the wing portion 120 to the mounting surface Ro, and the wing portion 120 is fixed to the mounting surface Ro.

[0251] Next, the operation of the LED lighting device A20 will be described.

[0252] In the LED lighting device A20, the outer surface 127a of the outer cover 127 includes a first surface 127b that is a mirror surface. Therefore, when the LED lighting device A20 attached to the mounting surface Ro is seen, the mounting surface Ro is reflected on the first surface 127b. The first surface 127b also has an edge 127e that faces the mounting surface Ro. Therefore, when the mounting surface Ro is reflected on the first surface 127b, the first surface 127b appears to be a part that continues from the mounting surface Ro, making it difficult to grasp the first surface 127b as a part of the LED lighting device A20. Therefore, such an LED lighting device A20 is suitable for making the thickness (dimension in the z direction) appear smaller.

[0253] In the LED lighting device A20, the first surface 127b spreads out in a vertical direction from the edge 127e to the mounting surface Ro. With this configuration, the mounting surface Ro reflected on the first surface 127b is easily seen as a surface that continues to the actual mounting surface Ro without bending. This makes it even more difficult to grasp the first surface 127b as a part of the LED lighting device A20. Therefore, such an LED lighting device A20 is suitable for making the thickness appear smaller.

[0254] In the LED lighting device A20, the first surface 127b is flat. The flat first surface 127b accurately reflects the actual mounting surface Ro without distortion. With this configuration, the mounting surface Ro reflected on the first surface 127b is easily seen as a surface that continues continuously from the actual mounting surface Ro. This makes it even more difficult to grasp the first surface 127b as a part of the LED lighting device A20. Therefore, such an LED lighting device A20 is suitable for making the thickness appear smaller.

[0255] In the LED lighting device A20, the outer surface 127a of the outer cover 127 includes the second surface 127c. Since the second surface 127c is a matte surface rather than a mirror surface, the mounting surface Ro is not reflected on the second surface 127c. The second surface 127c is connected to the first surface 127b at a linear boundary 127f. If the mounting surface Ro is not reflected on the second surface 127c and the boundary 127f is linear, the boundary 127f may be recognized as if it were an end of the LED lighting device A20. Therefore, the portion of the outer surface 127a on the second surface 127c side from the boundary 127f is easily recognized as a portion of the LED lighting device A20. This makes it even more difficult to recognize the first surface 127b as a portion of the LED lighting device A20. Therefore, such an LED lighting device A20 is suitable for making the thickness appear smaller.

[0256] In the LED lighting device A20, the outer surface 127a is bent at the boundary 127f. Therefore, the boundary 127f can be recognized as if it were an end of the LED lighting device A20. Therefore, the portion of the outer surface 127a from the boundary 127f to the second surface 127c side is more easily recognized as a part of the LED lighting device A20. This makes it more difficult to recognize the first surface 127b as a part of the LED lighting device A20. Therefore, such an LED lighting device A20 is suitable for making the thickness appear smaller.

[0257] 103 to 106 show an LED lighting device according to a 21st embodiment of the present invention. The LED lighting device A21 of this embodiment differs from the above-mentioned embodiments in that the majority of the device is embedded deeper than an opening W provided in a wall surface W such as a ceiling, which is the mounting surface. The LED lighting device A21 includes a mount 1 and an LED unit 2.

[0258] The LED unit 2 has substantially the same configuration as the LED unit 2 shown in Figs. 3 and 4, and has an elongated shape as a whole.

[0259] The mount 1 is composed of a box portion 15a and a frame portion 15b, and is formed by bending a steel plate having a thickness of, for example, about 0.8 mm. The box portion 15a is an elongated rectangular shape, and has a width of, for example, about 50 mm, a depth of, for example, about 29 mm, and a length of, for example, about 1230 mm, and accommodates most of the LED unit 2 having a length of, for example, about 1227 mm. More specifically, as shown in FIG. 105 and FIG. 106, in this embodiment, the height of the LED unit 2 is about 32 mm, so that the cover 4 of the LED unit 2 protrudes from the box portion 15a (mount 1) by about 3 mm in the height direction. The width and length of the box portion 15a are sized to fit into the opening Wa of the wall surface W.

[0260] Frame portion 15b is connected to the periphery of box portion 15a and has an overall elongated rectangular frame shape. As shown in Figures 105 and 106, frame portion 15b is composed of a portion that is perpendicular to the end of box portion 15a, i.e., parallel to wall surface W, and has a width of just over 8 mm, and a portion that extends from this portion toward wall surface W by about 7 mm. As a result, frame portion 15b is slightly larger in size than opening Wa of wall surface W and engages with wall surface W.

[0261] The LED unit 2 is fixed to the mount 1 by the holder 11. The holder 11 has a configuration similar to that shown in Figs. 38 to 41. In this embodiment, the holder 11 is formed by bending a metal plate, and has a locking portion 11d and a flexible portion 11b. The locking portion 11d is a portion where the metal plate is bent so as to protrude toward the LED unit 2 side, and engages with a convex portion 326 of the outer portion 322 of the bracket 32 ​​of the LED unit 2. The flexible portion 11b is located on the base side of the locking portion 11d, and allows the locking portion 11d to be engaged with the outer portion 322 and to be separated from the outer portion 322 by elastic deformation. As shown in Fig. 107, the holder 11 may be the same as the configuration shown in Figs. 38 to 41.

[0262] In this embodiment, a wire holder 161 is provided to fix the LED unit 2. The wire holder 161 is formed by bending a wire, and is supported rotatably with respect to the mount 1 at two engagement portions 15c formed on the mount 1. As shown in FIG. 106, the wire holder 161 has a portion curved along the cover 4 of the LED unit 4 and a bent portion that engages with the outer portion 322 of the bracket 32 ​​of the LED unit 2.

[0263] As shown in Figures 103 and 104, when the LED unit 2 is fixed to the mount 1, the wire holder 161 is closed. On the other hand, when the LED unit 2 is to be attached to or detached from the mount 1, the wire holder 161 is rotated to be opened. As shown in Figure 104, the wire holder 161 is still located below the LED unit 2 even in the open state.

[0264] Next, the operation of the LED lighting device A21 will be described.

[0265] Most of the LED lighting device A21 is located deep inside the wall W. This makes it possible to reduce the portion that protrudes from the wall W. This makes it possible to make the entire wall W nearly flat, giving the impression that the room is smart.

[0266] By storing the LED unit 2 in the box portion 15a, the LED unit 2 can be disposed deep inside the wall surface W and fixed at a desired position. The holder 11 allows the LED unit 2 to be attached to the mount 1 with a simple operation. The holder wire 161 is convenient for easily attaching and detaching the LED unit 2. Meanwhile, since the holder wire 161 is a thin member made of wire, there is little risk of unduly blocking too much light from the LED unit 2.

[0267] The cover 4, which is a part of the LED unit 2, protrudes beyond the mount 1, thereby preventing the light transmitted through the cover 4 from being blocked by the mount 1. This is suitable for illuminating a wider range with the LED lighting device A21.

[0268] 108 shows an LED lighting device according to the twenty-second embodiment of the present invention. The LED lighting device A22 of this embodiment differs from the LED lighting device A21 described above in that it includes a plurality of LED units 2.

[0269] In the LED lighting device A22, the length of the box portion 15a of the mount 1 is set to be approximately an integer multiple of the length of the multiple LED units 2. In the box portion 15a, the multiple LED units 2 are arranged in series.

[0270] According to such an embodiment, it is possible to achieve a length that reaches the entire length of the ceiling of a relatively large room, and yet the seams are barely noticeable.

[0271] 109 to 112 show an LED lighting device according to the 23rd embodiment of the present invention. The LED lighting device A23 of this embodiment is equipped with two LED units 2. As shown in Fig. 109, 111 and 112, in this embodiment, the width of the box portion 15a is about 100 mm, which is more than twice the width of the LED unit, 33 mm. As a result, the two LED units 2 are housed in parallel in the box portion 15a.

[0272] In this embodiment, the LED unit 2 is provided with two release levers 162. Each release lever 162 is, for example, made of a steel plate with a thickness of about 1.6 mm and is a strip-shaped member with a width of about 10 mm. The two release levers 161 are rotatably supported by a bolt with respect to the support member 3 of the LED unit 2. In FIG. 110, the release lever 162 shown by a solid line shows a state in which the LED unit 2 is fixed to the mount 1. On the other hand, the release lever 162 shown by a two-dot chain line shows a state when the LED unit 2 is removed from the mount 1. When the release lever 162 is raised in a direction perpendicular to the longitudinal direction of the LED unit 2, the end portion located behind the wall surface W protrudes behind the support member 3 and presses the bottom of the box portion 15a. This reaction force allows the LED unit 2 to be removed from the mount 1.

[0273] According to this embodiment, it is possible to illuminate the room with brighter illuminance even with the same length compared to a configuration having only one row of LED units 2. Furthermore, by using the release lever 161, the two LED units 21 arranged in parallel relatively close to each other can be easily removed individually.

[0274] Fig. 113 shows an LED lighting device according to the 24th embodiment of the present invention. The LED lighting device A24 of this embodiment is equipped with multiple LED units 2. The box portion 15a has a width of about 100 mm and a length that is approximately an integral multiple of the length of the LED units 2. As a result, multiple LED units 2 are housed in the box portion 15a in series in an arrangement of two rows. According to this embodiment, a larger room can be illuminated with sufficient illuminance.

[0275] The LED lighting device according to the present invention is not limited to the above-mentioned embodiment, and the specific configuration of each part of the LED lighting device according to the present invention can be freely modified in various ways.

[0276] The present invention is not limited to a configuration in which the LED module 20 is mounted on the substrate 31, but may be a configuration in which an insulating layer and a wiring pattern are formed on the support member 3, and the LED module 20 is mounted on this. A configuration having the LED module 20 is suitable for efficiently emitting light from the LED chip 22, but the present invention is not limited to this, and may be a configuration in which the LED chip 22 is directly mounted on the substrate 31, for example.

[0277] For example, the LED lighting devices A16 to A19 use the bracket 32 ​​with one end portion inclined in the longitudinal direction, but the bracket 32 ​​shown in the LED lighting devices A3 and A14 can also be used instead.

[0278] In the LED lighting devices A16 to A19, the first and second light-emitting parts 1A and 2A are formed so as to be elongated and extend in directions perpendicular to each other, but the directions in which the first and second light-emitting parts extend are not limited to those in the above-mentioned embodiments. For example, for decorative purposes, the angles formed by the directions in which the first and second light-emitting parts extend may be acute or obtuse.

[0279] The present invention is not limited to a configuration in which the LED module 20 is mounted on the substrate 31 or the additional substrate 31b, but may be a configuration in which an insulating layer and a wiring pattern are formed on the support member 3 and the LED module 20 is mounted thereon. A configuration having the LED module 20 is suitable for efficiently emitting light from the LED chip 22, but the present invention is not limited to this, and may be a configuration in which the LED chip 22 is directly mounted on the substrate 31 or the additional substrate 31b, for example. [Explanation of symbols]

[0280] A1~A24 LED lighting equipment Cy Chuo Line Cxy central line D Removal tool E AC power supply Lw Linear indicator Ro Mounting surface S1, S2 Switch T transformer W, W', W'' Wall surface (mounting surface) x (1st) direction y (third) direction z (second) direction 1 Mount (support) 2 LED units 3 Supporting member 4 Cover 5 Power conversion section 10 Main unit 10A First Support 10B Second Support 10a Recess 11 Holder 11a Locking piece 11b Flexible part 11c Cutout 11d Locking part 12 Holder 12a Mating part 12b Flexible part 12c Unicum 13 Holder 13a Locking piece 13b Flexible part 13c Fixed part 14 Holder 14a Locking piece 14b Flexible part 14c Base 14d Cutout 14e,14f Bend part 14g protrusion 15a Hakobe 15b Frame section 15c Engagement part 161 Wire holder 162 Release lever 20 LED Modules 20a LED chip for checking illuminance 20b Notification LED chip 21 Lead 21a Mounting terminal 22 LED chips 23 Sealing resin 24 Reflector 31 Substrate 31a Additional part 31b Additional board 32 Bracket 32a Containment Space 32b Recess 33 Screw (convex part) 34 Connector 34a, 34b, 34c Connectors 35 Shaft 35a Base 35b Tip 36 wire group 41, 42 Locking piece 41a End 41b Step 42a Locking surface 42b Slope 43 Central area (strong diffusion area) 44 Diffusion material 51 cases 51a Notch 51b Holder 51c,51d Fold-in section 52 Power supply board 53 Electronic Components 54 Detection methods 55 Voltage detection means 56a,56b resistor 57 Adjustment resistance 110 Base Plate 110a Mounting surface 110b,110c Index section 111 Bulge 111a (for connecting the wing) screw hole 112 (ceiling mounting) screw holes 112a Long hole part 112b Recess 112c screw hole 112d Index section 113 Long board section 114, 114b, 114c, 115 Plate-shaped members 114a Cutout 116 Shading part 116a Hollow part 116b Hole 120 Wing 120h screw hole 121 Bottom plate part 121a Screw hole 122 Wall 123 Arcuate 124 Connection section 125 Regulatory Materials 126 Cap 127 Outer cover 127a Exterior 127b 1st page 127c 2nd side 127d 3rd page 127e,127h edge 127f,127g boundary 131 Screw (connecting means) 132 Screw (mounting means) 141 Washer (adjustment part) 142 Springs (elastic members, adjustment members) 143 Laminated body (adjustment member) 144 Seal (membrane member) 150 Base bracket 311 Wiring group 321 Base 321a Recess 322 Outer 322a Reflector 323 (For fixing) Locking groove 324, 325 (for cover) Locking groove 324a Locking surface 325a Locking surface 325b Convex piece 326 Convex 331,332 Caps 361 Main electric wire 361a power line 361b signal line 362 Connecting Lines

Claims

1. An LED lighting device comprising an LED unit and a mount, The LED unit includes a plurality of LED modules arranged in a first direction, a support member, a cover, and a power conversion unit, The mount is made up of two base metal fittings and two holders, The holder engages with and supports the LED unit, The base metal fitting is attached to a mounting surface and has a raised portion and two extending portions, The holder is attached to the raised portion, The two extension portions extend in a second direction perpendicular to the first direction with the protruding portion therebetween, The two extensions are provided with screw holes through which screws for fixing are inserted, The screw hole has an elongated portion and a recessed portion, The long hole portion has a long axis direction in the second direction, The recess is recessed in the first direction from a center of the elongated hole portion. LED lighting equipment.

2. The base metal fittings are spaced apart in the first direction.

2. The LED lighting device according to claim 1.

Images