LED lighting device and LED lighting fixture

Abstract

To provide an LED lighting device etc. which can inhibit entry of foreign objects, such as insects and dust, into a space area between a cover member and a frame and inhibit excessive deformation of an extending part of the cover member.SOLUTION: An LED lighting device 3 comprises: a light source part 10; a long frame 20 having a main plate part 21 to which the light source part 10 is attached; a long cover member 30 having a main part 31 covering the light source part 10 and extending parts 32 extending toward the light source part 10; and end caps 40 each provided at an end in a longitudinal direction of the cover member 30. The end cap 40 has a main part 41 which is a cap body, and protruding parts protruding from an inner surface 41a of the main part 41. The extending part 32 contacts with the main plate part 21, while being pressed against the main plate part 21. The end cap 40 has a first extending part opposite protruding piece facing the extending part 32 in a vertical direction as the protruding part. The first extending-part opposite protrusion piece is provided at a position where the first extending-part opposite protrusion piece may contact with the extending part 32.SELECTED DRAWING: Figure 19

Description

[Technical Field]

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

[0002] LED lighting fixtures that use LEDs (Light Emitting Diodes) are known. For example, as an LED lighting fixture installed on a ceiling, there is known an LED lighting fixture that includes a long LED lighting device called a light bar and a long fixture body that has a recess into which the LED lighting device can be detachably attached (Patent Document 1).

[0003] The LED lighting device in the LED lighting fixture disclosed in Patent Document 1 includes a light source unit consisting of an LED, a long, translucent cover member that covers the light source unit, a long frame that supports the light source unit and to which the cover member is attached, and a pair of end caps that close both longitudinal ends of the cover member. The cover member has a main portion that covers the light source unit and an extension portion that extends toward the light source unit. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2019-103248 Summary of the Invention [Problem to be solved by the invention]

[0005] In LED lighting devices, there is a risk that insects, dust, and other foreign objects may enter the space between the cover member and the frame (insect-proof area). For this reason, LED lighting devices with an insect-proof structure to prevent the entry of insects, dust, and other foreign objects have been proposed.

[0006] However, in conventional LED lighting devices, the extension of the cover member is covered and fixed by the protruding part of the end cap to prevent it from moving, so parts such as the cover member cannot absorb dimensional variations, and there is a risk that foreign objects such as insects and dust may enter the space between the cover member and the frame.

[0007] Furthermore, if the extension portion of the cover member is made movable so that it can be bent and deformed, there is a risk that the extension portion will be deformed too much and break.

[0008] The present invention has been made in consideration of such problems, and aims to provide an LED lighting device, etc., which can prevent foreign objects such as insects and dust from entering the space between the cover member and the frame, and can also prevent excessive deformation of the extended portion of the cover member. [Means for solving the problem]

[0009] In order to achieve the above object, one aspect of the LED lighting device according to the present invention comprises a light source unit, an elongated frame having a main plate to which the light source unit is attached, an elongated cover member having a main portion covering the light source unit and an extension portion extending toward the light source unit, and an end cap provided at a longitudinal end of the cover member, wherein the end cap has a cap body and a protrusion portion protruding from the inner surface of the cap body, the extension portion abutting while being pressed against the main plate portion, and the end cap has, as the protrusion, a first extension portion-opposing protrusion piece that faces the extension portion in the vertical direction when the LED lighting device is attached to a fixture body installed on a ceiling, and the first extension portion-opposing protrusion piece is provided in a position where it can come into contact with the extension portion.

[0010] An embodiment of an LED lighting fixture according to the present invention includes the above LED lighting device and a fixture body having a recess in which the LED lighting device is attached. [Effects of the Invention]

[0011] This can prevent foreign matter such as insects and dust from entering the space between the cover member and the frame, and can also prevent the extension portion of the cover member from being excessively deformed. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a perspective view of an LED lighting fixture according to an embodiment. [Figure 2] FIG. 2 is an exploded perspective view of the LED lighting fixture according to the embodiment. [Figure 3] FIG. 3 is a cross-sectional view of the LED lighting fixture according to the embodiment. [Figure 4] FIG. 4 is a cross-sectional view of an LED lighting fixture according to an embodiment. [Figure 5] FIG. 5 is a partial cross-sectional view of an LED lighting fixture according to an embodiment. [Figure 6] FIG. 6 is a perspective view of the LED lighting device according to the embodiment as viewed from the cover member side. [Figure 7] FIG. 7 is a perspective view of the LED lighting device according to the embodiment as seen from the back side. [Figure 8] FIG. 8 is a cross-sectional perspective view of the LED lighting device according to the embodiment. [Figure 9] FIG. 9 is an exploded perspective view of the LED lighting device according to the embodiment. [Figure 10] FIG. 10 is a perspective view of an end portion in the longitudinal direction of the LED lighting device according to the embodiment. [Figure 11] FIG. 11 is an enlarged view of an end portion in the longitudinal direction of the LED lighting device according to the embodiment. [Figure 12] FIG. 12 is a diagram for explaining a method for attaching an LED lighting device to a fixture body in an LED lighting fixture according to an embodiment. [Figure 13] FIG. 13 is a diagram for explaining how the cover member is attached to the frame in the manufacturing method of the LED lighting device according to the embodiment. [Figure 14]FIG. 14 is a diagram for explaining how the cover member is attached to the frame in the manufacturing method of the LED lighting device according to another embodiment. [Figure 15] FIG. 15 is a half cross-sectional view of an LED lighting device according to another embodiment. [Figure 16] FIG. 16 is a perspective view of the end cap according to the embodiment as viewed from the outer surface side. [Figure 17] FIG. 17 is a perspective view of the end cap according to the embodiment as viewed from the inner surface side. [Figure 18] FIG. 18 is a cross-sectional view of an LED lighting fixture according to an embodiment. [Figure 19] FIG. 19 is an enlarged view of an area IXX enclosed by a dashed line in FIG. [Figure 20] FIG. 20 is an exploded perspective view of the portion shown in FIG. [Figure 21] FIG. 21 is a diagram for explaining a method for fastening the end cap and the cover member together. [Figure 22] FIG. 22 is a diagram showing how the adhesive applied to the fitting portion of the end cap flows along the outer wall surface of the fitting portion. [Figure 23] FIG. 23 is a diagram showing the configuration of an end cap of a comparative example. [Figure 24] FIG. 24 is a diagram showing how the cover member is attached to the frame when the end cap of the comparative example is used and when the end cap of this embodiment is used. [Figure 25] FIG. 25 is a diagram showing the configuration of an LED lighting device equipped with a cover member according to another embodiment. [Figure 26] FIG. 26 shows variations in the position of the discontinuous portion of the fitting portion of the end cap. [Figure 27] FIG. 27 is a diagram showing the position of an adhesive for fastening the cover member and the end cap together in the LED lighting device according to the embodiment. [Figure 28]FIG. 28 is a diagram showing another example of the position of the adhesive for fastening the cover member and the end cap together in the LED lighting device according to the embodiment. [Figure 29] FIG. 29 shows a modified example of the position of the adhesive for fixing the cover member and the end cap together. [Figure 30] FIG. 30 shows another modified example of the position of the adhesive for fastening the cover member and the end cap together. [Figure 31] FIG. 31 is a diagram showing the configuration of an end cap provided with a welding rib. [Figure 32] FIG. 32 is a diagram showing the position of the welding ribs (linear ribs) on the end cap. [Figure 33] FIG. 33 is a diagram showing another example of the position of the welding rib (linear rib) on the end cap. [Figure 34] FIG. 34 is a diagram showing the positions of the welding ribs (point ribs) on the end caps. [Figure 35] FIG. 35 is a diagram showing another example of the position of the welding ribs (point ribs) on the end cap. [Figure 36] FIG. 36 is a perspective view of the LED lighting device according to the embodiment when cut along a plane passing through the recessed portion of the end cap. [Figure 37] FIG. 37 is a side view of the LED lighting device according to the embodiment when cut along a plane passing through the recessed portion of the end cap. [Figure 38] FIG. 38 is a diagram showing how the cover member with the end caps attached is combined with the frame. [Figure 39] FIG. 39 is a cross-sectional view of an LED lighting device having an end cap according to another embodiment, taken along a plane passing through the recessed portion of the end cap. [Figure 40] FIG. 40 shows how a cover member and a frame of another embodiment are combined together. [Figure 41] FIG. 41 is a half cross-sectional view of the LED lighting device according to the first modification. [Figure 42]FIG. 42 is a half cross-sectional view of an LED lighting device according to the second modification. [Figure 43] FIG. 43 is a half cross-sectional view of an LED lighting device according to another aspect of the second modification. [Figure 44] FIG. 44 is a half cross-sectional view of an LED lighting device according to still another aspect of the second modification. [Figure 45] FIG. 45 shows variations in the shape of the third projecting piece of the end cap. [Figure 46] FIG. 46 shows other variations in the shape of the third projecting piece of the end cap. [Figure 47] FIG. 47 is a half cross-sectional view of an LED lighting device according to the third modification. [Figure 48] FIG. 48 is a half cross-sectional view of an LED lighting device according to the fourth modification. [Figure 49] FIG. 49 is an enlarged view of an outer end portion of an LED lighting device in an LED lighting fixture according to an embodiment. [Figure 50] FIG. 50 is a diagram showing a state in which the cover member and the end cap are misaligned when assembled together in the LED lighting device of the comparative example. [Figure 51] FIG. 51 is a diagram showing a state in which the cover member and the end cap are combined in a misaligned manner in the LED lighting device according to the embodiment. [Figure 52] FIG. 52 is a diagram showing the positions of the protrusions on the cover member of the first modification. [Figure 53] FIG. 53 is a diagram showing the positions of the protrusions on the cover member of the second modification. [Figure 54] FIG. 54 is a diagram showing variations in the position of the protrusion of the cover member. [Figure 55] FIG. 55 is a half cross-sectional view of an LED lighting device according to the fifth modification. [Figure 56] FIG. 56 is a half cross-sectional view of an LED lighting device according to the sixth modification. [Figure 57] FIG. 57 is a half cross-sectional view of an LED lighting device according to the seventh modification. [Figure 58]FIG. 58 is a half cross-sectional view of an LED lighting device according to another aspect of the seventh modification. [Figure 59] FIG. 59 is a half cross-sectional view of an LED lighting device according to the eighth modification. [Figure 60] FIG. 60 is a half cross-sectional view of an LED lighting device according to another aspect of the eighth modified example. [Figure 61] FIG. 61 is a half cross-sectional view of an LED lighting device according to the ninth modification. [Figure 62] FIG. 62 is a half cross-sectional view of an LED lighting device according to the tenth modification. [Figure 63] FIG. 63 is a diagram showing the configuration of an LED lighting device according to the eleventh modification. [Figure 64] FIG. 64 is a half cross-sectional view of an LED lighting device according to the twelfth modification. [Figure 65] FIG. 65 is a half cross-sectional view of an LED lighting device according to another aspect of the twelfth modification. [Figure 66] FIG. 66 is a half cross-sectional view of an LED lighting device according to the thirteenth modification. [Figure 67] FIG. 67 is a half cross-sectional view of an LED lighting device according to the fourteenth modification. [Figure 68] FIG. 68 is a half cross-sectional view of an LED lighting device according to the fifteenth modification. [Figure 69] FIG. 69 is a half cross-sectional view of an LED lighting device according to the sixteenth modification. [Figure 70] FIG. 70 is a half cross-sectional view of an LED lighting device according to the seventeenth modification. [Figure 71] FIG. 71 is a half cross-sectional view of an LED lighting device according to the eighteenth modification. [Figure 72] FIG. 72 is a half cross-sectional view of an LED lighting device according to the nineteenth modification. [Figure 73] FIG. 73 shows variations of the tip end portion of the extension part of the cover member in the LED lighting device according to Modification 18. In FIG. [Figure 74] FIG. 74 is a diagram showing a first modified example of the discontinuous portion in the fitting portion of the end cap. [Figure 75]FIG. 75 is a diagram showing a second modified example of the discontinuous portion in the fitting portion of the end cap. [Figure 76] FIG. 76 is a diagram showing a third modified example of the discontinuous portion in the fitting portion of the end cap. [Figure 77] FIG. 77 is a diagram showing a fourth modified example of the discontinuous portion in the fitting portion of the end cap. [Figure 78] FIG. 78 is a diagram showing a first modified example of the first continuous portion in the fitting portion of the end cap. [Figure 79] FIG. 79 is a diagram showing a second modified example of the first continuous portion in the fitting portion of the end cap. [Figure 80] FIG. 80 is a diagram showing the configuration of an end cap in the LED lighting device according to the embodiment and an end cap according to Modification 1. In FIG. [Figure 81] FIG. 81 shows a variation of the main part of the end cap. [Figure 82] FIG. 82 shows a variation of an end cap having an instrument-side protrusion. [Figure 83] FIG. 83 shows variations of the first projecting piece of the end cap. [Figure 84] FIG. 84 is a diagram showing variations of the first elastic portion of the elastic member attached to the end cap. [Figure 85] FIG. 85 is a diagram showing another variation of the first elastic portion of the elastic member attached to the end cap. [Figure 86] FIG. 86 is a perspective view of the end cap according to the second modification when viewed from the outer surface side. [Figure 87] FIG. 87 is a perspective view of the end cap according to the second modification when viewed from the inner surface side. [Figure 88] FIG. 88 is an enlarged perspective view of the end of the end cap according to the second modification. [Figure 89] FIG. 89 is a cross-sectional view of an LED lighting device according to Modification 20. As shown in FIG. [Figure 90] FIG. 90 is a cross-sectional view of an LED lighting device according to the twenty-first modification. [Figure 91] FIG. 91 is a cross-sectional view of two types of cover members. [Figure 92] FIG. 92 is a cross-sectional view showing a variation of the cover member of FIG. 91(a). [Figure 93] FIG. 93 is a cross-sectional view showing a variation of the cover member of FIG. 91(b). [Figure 94] FIG. 94 is a half cross-sectional view of an LED lighting device according to a first example of the twenty-second modified example. [Figure 95] FIG. 95 is a half cross-sectional view of an LED lighting device according to a second example of the twenty-second modification. [Figure 96] FIG. 96 is a half cross-sectional view of an LED lighting device according to a third example of the twenty-second modified example. [Figure 97] FIG. 97 is a half cross-sectional view of an LED lighting device according to a fourth example of the twenty-second modification. [Figure 98] FIG. 98 is a half cross-sectional view of an LED lighting device according to a fifth example of the twenty-second modified example. [Figure 99] FIG. 99 is a half cross-sectional view of an LED lighting device according to a sixth example of the twenty-second modified example. [Figure 100] FIG. 100 is a half cross-sectional view of an LED lighting device according to a seventh example of the twenty-second modified example. [Figure 101] FIG. 101 is a half cross-sectional view of an LED lighting device according to an eighth example of the twenty-second modified example. [Figure 102] FIG. 102 is a half cross-sectional view of an LED lighting device according to a ninth example of the twenty-second modified example. [Figure 103] FIG. 103 is a half cross-sectional view of an LED lighting device according to a tenth example of the twenty-second modified example. [Figure 104] FIG. 104 is a diagram showing a frame configuration of the first modification. [Figure 105] FIG. 105 is a diagram showing a frame configuration of the second modification. [Figure 106] FIG. 106 is a diagram showing a frame structure of the third modification. [Figure 107] FIG. 107 is a diagram showing a frame configuration of the fourth modification. [Figure 108]FIG. 108 is a diagram showing the structure of a first modified example of an LED lighting device. [Figure 109] FIG. 109 is a diagram showing the structure of a second modified example of the LED lighting device. [Figure 110] FIG. 110 is a diagram showing the structure of a third modified example of the LED lighting device. [Figure 111] FIG. 111 is a cross-sectional view showing a modified example of the instrument body. [Figure 112] FIG. 112 is a cross-sectional view showing another modified example of the instrument main body. [Figure 113] FIG. 113 is a cross-sectional view showing a first modified example of the frame. [Figure 114] FIG. 114 is a cross-sectional view showing a second modified example of the frame. [Figure 115] FIG. 115 is a cross-sectional view showing a third modified example of the frame. [Figure 116] FIG. 116 is a cross-sectional view showing a fourth modified example of the frame. [Figure 117] FIG. 117 is a cross-sectional view showing a fifth modified example of the frame. [Figure 118] FIG. 118 is a cross-sectional view showing a sixth modified example of the frame. [Figure 119] FIG. 119 is a cross-sectional view showing a seventh modified example of the frame. [Figure 120] FIG. 120 is a cross-sectional view showing an eighth modified example of the frame. [Figure 121] FIG. 121 is a cross-sectional view showing a ninth modified example of the frame. [Figure 122] FIG. 122 is a cross-sectional view showing a tenth modified example of the frame. [Figure 123] FIG. 123 is a cross-sectional view showing an eleventh modified example of the frame. [Figure 124] FIG. 124 is a cross-sectional view showing a twelfth modified example of the frame. [Figure 125] FIG. 125 is a cross-sectional view showing a thirteenth modified example of the frame. [Figure 126] FIG. 126 is a cross-sectional view showing a fourteenth modified example of the frame. [Figure 127]FIG. 127 is a cross-sectional view showing a fifteenth modified example of the frame. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that each of the embodiments described below shows a specific example of the present invention. Therefore, the numerical values, components, the arrangement and connection of the components, steps, and the order of steps shown in the following embodiments are merely examples and are not intended to limit the present invention. Therefore, among the components in the following embodiments, components that are not described in the independent claims that represent the highest concept of the present invention will be described as optional components.

[0014] Note that each figure is a schematic diagram and is not necessarily an exact illustration. Furthermore, in each figure, substantially identical components are assigned the same reference numerals, and redundant explanations are omitted or simplified. Furthermore, in each figure, the X-axis, Y-axis, and Z-axis represent the three axes of a three-dimensional Cartesian coordinate system. In this embodiment, the Z-axis direction is the vertical direction, and the direction perpendicular to the Z-axis (the direction parallel to the XY plane) is the horizontal direction. The X-axis and Y-axis are mutually orthogonal and are both orthogonal to the Z-axis. Note that, in this specification, the terms "up" and "down" do not necessarily refer to the upward direction (vertically upward) and downward direction (vertically downward) in absolute spatial recognition. Furthermore, in this specification, the terms "substantially," "almost," and "about" mean to include manufacturing errors or dimensional tolerances. As an example, "substantially," "almost," and "about" mean within ±5%.

[0015] (Embodiment) First, the configuration of an LED lighting fixture 1 according to an embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a perspective view of the LED lighting fixture 1 according to an embodiment. FIG. 2 is an exploded perspective view of the LED lighting fixture 1. FIGS. 3 and 4 are cross-sectional views of the LED lighting fixture 1, showing a cross-section when cut along a plane parallel to the short side of the LED lighting fixture 1. FIG. 3 shows a cross-section of a portion where a power supply unit 4 is not present, and FIG. 4 shows a cross-section of a portion where a power supply unit 4 is present. FIG. 5 is a partial cross-sectional view of the LED lighting fixture 1, showing a cross-section when cut along a plane parallel to the longitudinal direction of the LED lighting fixture 1. Specifically, FIG. 5 shows a cross-section of the periphery of one of both longitudinal ends of the LED lighting fixture 1.

[0016] As shown in Figs. 1 to 5, the LED lighting fixture 1 includes a fixture body 2 and an LED lighting device 3 attached to the fixture body 2. The LED lighting device 3 is an LED unit that uses an LED as a light source, and the LED lighting fixture 1 is an LED light that uses the LED lighting device 3 as a light source.

[0017] The LED lighting fixture 1 and the LED lighting device 3 are long. The total length of the LED lighting fixture 1 and the LED lighting device 3 is, for example, 2 feet, 4 feet, or 8 feet. The total length of the LED lighting device 3 in this embodiment is 4 feet. Note that 1 foot (= 1 [ft]) is 304.8 [mm].

[0018] As shown in Figure 3, the LED lighting fixture 1, which consists of a fixture body 2 and an LED lighting device 3, has an overall D-shaped cross section when viewed from the longitudinal direction of the LED lighting fixture 1, resulting in a clean design in which the boundary between the fixture body 2 and the LED lighting device 3 is inconspicuous.

[0019] The fixture body 2 holds the LED lighting device 3. The fixture body 2 is installed in a predetermined location in a building. Specifically, the LED lighting fixture 1 is installed in a predetermined construction material such as a ceiling or wall in a room of a building such as a facility, building, store, or residence. In this embodiment, the LED lighting fixture 1 is a ceiling light installed on the ceiling of a building. As an example, the LED lighting fixture 1 is a direct-ceiling mounted LED light, and the fixture body 2 is installed on the ceiling surface of the ceiling. In this case, the LED lighting fixture 1 installed on the ceiling irradiates illumination light toward the floor (floor side), with the floor direction (floor side) being the predetermined direction. The illumination light is irradiated from the LED lighting device 3 in the LED lighting fixture 1.

[0020] When installing an LED lighting fixture 1 on a ceiling, the fixture body 2 of the LED lighting fixture 1 is attached to the ceiling using bolts or the like. For example, as shown in FIG. 2, a bolt 101 protruding from the ceiling is inserted into a bolt insertion hole 2d provided in the fixture body 2, and a washer and nut are attached to the bolt 101 to secure the fixture body 2 to the bolt. Note that, depending on the construction site, the fixture body 2 may be attached using a double nut. The fixture body 2 requires a protrusion allowance for the bolt (an allowance for the bolt to be retracted into the fixture body 2), and it is desirable that the surrounding area be designed so that the components that make up the LED lighting device 3 do not interfere with it.

[0021] Furthermore, components (such as the power supply 4, the dimming terminal block 9, and the functional unit) provided on the rear side of the frame 20 of the LED lighting device 3 protrude from the frame 20. Therefore, they should be positioned so as not to overlap the bolt insertion holes 2d, the wiring insertion holes 2e (holes through which wiring 102, such as the power line and the dimming signal line drawn from the ceiling, is inserted) and the terminal block provided in the fixture body 2. In particular, in a fixture body 2 having a shallow recess 2a, components provided on the rear side of the frame 20 should be positioned so as not to overlap the bolt insertion holes, the wiring insertion holes and the terminal block. Note that even in a fixture body (such as a renewal fixture body) with a deep recess used in an existing lighting fixture equipped with a fluorescent lamp, components provided on the rear side of the frame 20 should be positioned so as not to overlap the bolt insertion holes, the wiring insertion holes and the terminal block. In addition, since there is a possibility that two power lines (VVF cables) (for input and for feed) may be placed between the wiring insertion hole 2e (particularly the hole through which the power line is inserted) and the terminal block, it is desirable to arrange the components (wiring such as power lines) provided on the back side of the frame 20 so that they do not overlap the area between the wiring insertion hole and the terminal block.

[0022] The fixture body 2 is made of metal and is formed into a long, flat box shape in the Y-axis direction by bending a metal plate, etc. Specifically, when the fixture body 2 is installed on a ceiling, it is formed so as to have an inverted Fuji shape when viewed from the Y-axis direction.

[0023] 2, the device body 2 is provided with a recess 2a having a rectangular opening surface. The recess 2a is provided in an elongated shape along the longitudinal direction of the device body 2. In other words, the shape of the recess 2a in a top view (the shape of the opening surface) is rectangular with the Y-axis direction as the longitudinal direction.

[0024] As shown in Figures 2 and 3, the appliance body 2 has an opening edge 2a1 located outside the recess 2a. The opening edge 2a1 (first opening edge) is located outside the short-side direction (X-axis direction) of the appliance body 2 and is the appliance body side that serves as a side portion of the appliance body 2. The opening edge 2a1 (appliance body side) forms the edge of the opening surface of the recess 2a in the short-side direction (X-axis direction) of the appliance body 2. In other words, the outer edge of the opening edge 2a1 on the recess 2a side is the edge of the opening surface of the recess 2a. In this embodiment, the opening edge 2a1 is a flat portion whose surface is flat and forms the opening edge surface of the recess 2a.

[0025] The opening edge 2a1 is a flat part of the metal plate that constitutes the device body 2. As an example, the opening edge 2a1 has a long, narrow rectangular shape in a top view, with its longitudinal direction aligned in the Y-axis direction. In this case, the long side of the opening edge 2a1 is the long side of the rectangular opening surface of the recess 2a, with its longitudinal direction aligned in the Y-axis direction.

[0026] The opening edges 2a1 are formed on both ends in the short-side direction (X-axis direction) of the device body 2. That is, the opening edges 2a1 are formed on both sides in the short-side direction (width direction) of the opening surface of the recess 2a. Therefore, in the X-axis direction, the pair of opening edges 2a1 sandwich the opening surface of the recess 2a.

[0027] 1 and 2, the device body 2 has not only an opening edge 2a1 but also an opening edge 2a2 (second opening edge) located outside the recess 2a. The opening edge 2a2 is located outside the longitudinal direction (Y-axis direction) of the device body 2 and is a device body end that serves as an end portion of the device body 2. The opening edge 2a2 forms the edge of the opening surface of the recess 2a in the longitudinal direction (Y-axis direction) of the device body 2. In other words, the edge of the opening edge 2a2 on the recess 2a side is the edge of the opening surface of the recess 2a. In this embodiment, the opening edge 2a2 is a flat portion whose surface is flat and forms the opening edge surface of the recess 2a.

[0028] Like the opening edge 2a1, the opening edge 2a2 is a part of the metal plate that constitutes the device body 2 and has a flat plate shape. As an example, the opening edge 2a2 has a rectangular shape in a top view with its longitudinal direction in the X-axis direction. In this case, the long side of the opening edge 2a2 is the short side of the rectangular opening surface of the recess 2a with its longitudinal direction in the Y-axis direction.

[0029] The opening edges 2a2 are formed at both ends in the longitudinal direction (Y-axis direction) of the device body 2. That is, the opening edges 2a2 are formed on both longitudinal sides of the opening surface of the recess 2a. Therefore, in the Y-axis direction, the pair of opening edges 2a2 sandwich the opening surface of the recess 2a.

[0030] In this embodiment, the opening edge 2a1 on the side of the appliance body overlaps the end of the opening edge 2a2 on the end of the appliance body in the X-axis direction. Therefore, the surface of the opening edge 2a2 is set back toward the bottom of the recess 2a from the surface of the opening edge 2a1 by the thickness of the opening edge 2a1. In other words, the opening edge 2a2 is set back from the opening edge 2a1 by the plate thickness of the opening edge 2a1. As a result, a step corresponding to the plate thickness is formed at the boundary between the opening edges 2a1 and 2a2. Note that the width of the opening edge 2a1 is narrower than the width of the opening edge 2a2, but this is not limited to this.

[0031] The pair of opening edges 2a1 and the pair of opening edges 2a2 form a flat portion formed in a rectangular frame shape when viewed from above. The area surrounded by the pair of opening edges 2a1 and the pair of opening edges 2a2 forms the rectangular opening surface of the recess 2a.

[0032] The fixture body 2 also has inclined surface portions 2b on both sides of the recess 2a in the X-axis direction (width direction) of the fixture body 2. Each inclined surface portion 2b extends from the opening edge 2a1 (the fixture body side) and has an inclined surface that slopes toward the ceiling as it extends outward. This inclined surface may function as a reflective surface.

[0033] The recess 2a of the fixture body 2 is a portion where the LED lighting device 3 is attached. Specifically, the recess 2a is a storage portion in which the LED lighting device 3 is stored, and is provided over substantially the entire length of the fixture body 2, excluding the opening edge 2a2 (fixture body end). As shown in FIG. 3, in this embodiment, the recess 2a has a substantially U-shaped cross section and has a pair of opposing side portions and a bottom portion. The pair of side portions are a pair of side walls erected on the bottom portion. As shown in FIG. 2, two slits 2c are provided on one of the pair of side portions of the recess 2a.

[0034] The LED lighting device 3 is fitted into the recess 2a of the fixture body 2. Specifically, the LED lighting device 3 is attached to the fixture body 2 so as to cover the recess 2a of the fixture body 2. In this embodiment, the LED lighting device 3 is detachably attached to the recess 2a of the fixture body 2. Therefore, the LED lighting device 3 can be attached to the recess 2a of the fixture body 2, and the LED lighting device 3 attached to the recess 2a of the fixture body 2 can be detached from the recess 2a.

[0035] Although details will be described later, the LED lighting device 3 and the fixture body 2 can be fixed by hooking and engaging a hook fitting 5 and an elastic holding member 6 (a kick spring in this embodiment) provided on the LED lighting device 3 onto the fixture body 2. The hook fitting 5 is a fitting for attaching the LED lighting device 3 to the fixture body 2. In this embodiment, the hook fitting 5 is a slide fitting, but is not limited to this.

[0036] The means for attaching the LED lighting device 3 to the fixture body 2 is not limited to the use of the hook metal fitting 5 and the elastic holding member 6 made of a kick spring. For example, the LED lighting device 3 and the fixture body 2 may be attached using other spring members such as a single torsion spring, a double torsion spring, or a leaf spring, or may be attached using attachment members other than spring members such as screws or latches. Furthermore, the spring member such as a kick spring and the spring receiving metal fitting for receiving the spring member may be provided on either the fixture body 2 or the LED lighting device 3. In other words, the spring member may be provided on the fixture body 2 and the spring receiving metal fitting may be provided on the LED lighting device 3, or the spring member may be provided on the LED lighting device 3 and the spring receiving metal fitting may be provided on the fixture body 2.

[0037] 4, the LED lighting device 3 emits light using power supplied from a power supply device 4 housed in the fixture body 2. The power supply device 4 is a device for supplying power to the light source unit 10 of the LED lighting device 3.

[0038] The power supply device 4 is disposed on the rear side of the LED lighting device 3. Specifically, the power supply device 4 is disposed in the recess 2a of the fixture body 2. That is, the power supply device 4 is housed in the recess 2a of the fixture body 2. In this embodiment, the power supply device 4 is attached to the LED lighting device 3 as a part of the LED lighting device 3 and is integrated with the LED lighting device 3. Note that the power supply device 4 may not be integrated with the LED lighting device 3, but may be disposed in the fixture body 2 separately from the LED lighting device 3. For example, the power supply device 4 may be fixed to the fixture body 2.

[0039] The power supply device 4 is configured with a power supply circuit that generates power for illuminating the LED lighting device 3. Specifically, the power supply device 4 has a circuit board 4a such as a printed wiring board and a plurality of electronic components 4b mounted on the circuit board 4a. In this embodiment, the power supply device 4 further has a circuit case 4c that houses the circuit board 4a on which the plurality of electronic components 4b are mounted. The circuit case 4c is a cover that covers the circuit board 4a on which the electronic components 4b are mounted. As an example, the circuit case 4c is a metal housing made of a metal plate. Note that the circuit case 4c may also be a resin housing. The power supply circuit that constitutes the power supply device 4 converts AC power from an external power source such as a commercial power source into DC power of a predetermined level by rectifying, smoothing, and stepping down the voltage, and supplies the DC power to the LEDs of the LED lighting device 3.

[0040] The power supply device 4 is supplied with AC power via a power terminal block 8 (see FIG. 2 ) to which a power line (such as a VVF cable) is connected, the power line being inserted from the ceiling into a through-hole (wiring insertion hole) in the fixture body 2 and drawn into the recess 2a of the fixture body 2. A power line such as a VVF cable is an electric wire used for construction work, and is an example of an electric wire. The power terminal block 8 is installed in the recess 2a of the fixture body 2.

[0041] Furthermore, when connecting the power supply terminal block 8 and the power supply device 4 via a power line, a connector provided at the other end of the power line connected to the power supply terminal block 8 may be inserted into a socket on the power supply device 4, or a connector provided at the other end of the power line connected to the power supply terminal block 8 may be connected to a connector provided at the other end of the power line connected to the power supply device 4, or a connector provided at the other end of the power line connected to the power supply device 4 may be inserted into a socket on the power supply terminal block 8, or the power supply terminal block 8 provided on the LED lighting device 3 may be connected to the power supply device 4 with a power line and the VVF cable from the ceiling may be connected to the power supply terminal block 8, or an outlet wire drawn from the power supply device 4 may be directly connected to the VVF cable from the ceiling.

[0042] Next, the detailed structure of the LED lighting device 3 will be described using Figs. 6 to 11 while referring to Figs. 1 to 5. Fig. 6 is a perspective view of the LED lighting device 3 according to the embodiment when viewed from the cover member 30 side, and Fig. 7 is a perspective view of the LED lighting device 3 when viewed from the back side. Fig. 8 is a cross-sectional perspective view of the LED lighting device 3. Fig. 9 is an exploded perspective view of the LED lighting device 3. Fig. 10 is a perspective view of the longitudinal end of the LED lighting device 3. Fig. 11 is an enlarged view of the longitudinal end of the LED lighting device 3. Fig. 11(a) is a top view, and Fig. 11(b) is a rear view.

[0043] 2, 6, and 7, the LED lighting device 3 is a long linear light source called a light bar. The LED lighting device 3 emits light of a predetermined color, such as white light, as illumination light.

[0044] As shown in FIGS. 3, 8 and 9, the LED lighting device 3 includes a light source unit 10, a frame 20 on which the light source unit 10 is disposed, a cover member 30 that covers the light source unit 10, and an end cap 40.

[0045] In this embodiment, the LED lighting device 3 also includes a power supply device 4. That is, the power supply device 4 is provided in the LED lighting device 3. Specifically, the power supply device 4 is attached to the ceiling side surface of the frame 20. For example, as shown in FIG. 4 , the power supply device 4 is fixed to the frame 20 by screwing a part of the circuit case 4c to the main board portion 21 of the frame 20 with screws 60.

[0046] Each of the components constituting the LED lighting device 3 will be described in detail below.

[0047] The light source unit 10 is a light-emitting unit that emits illumination light. In this embodiment, the light source unit 10 is elongated. In this case, the elongated light source unit 10 may be a single light source unit having a length substantially equal to the overall length of the frame 20 in the longitudinal direction (Y-axis direction), or a plurality of light source units 10 may be arranged along the longitudinal direction of the frame 20. As shown in FIG. 9, in this embodiment, two light source units 10 are arranged along the longitudinal direction of the frame 20.

[0048] The light source unit 10 is an LED module using an LED, and includes a substrate 11 and an LED 12 arranged on the substrate 11, as shown in FIGS.

[0049] The substrate 11 is a mounting substrate for mounting the LEDs 12. In this embodiment, the substrate 11 is formed in a substantially rectangular shape that is elongated in the longitudinal direction (Y-axis direction) of the frame 20. The thickness of the substrate 11 is, for example, 1.0 mm. As shown in FIG. 9, in this embodiment, two substrates 11 are arranged side by side along the longitudinal direction of the frame 20.

[0050] Substrate 11 is, for example, a printed wiring board (printed circuit board) on which metal wiring is formed in a predetermined pattern. Note that a resist made of an insulating resin material may be formed on the surface of substrate 11 so as to cover the wiring in order to protect the wiring and ensure a dielectric strength voltage. Substrate 11 may be a single-sided wiring board in which wiring is formed only on the main surface on which LEDs 12 are mounted, or a double-sided wiring board in which wiring is formed on both sides.

[0051] The base material constituting the substrate 11 may be a resin substrate made of an insulating resin material, a ceramic substrate made of a sintered body of a ceramic material such as alumina, or a metal-based substrate obtained by applying an insulating coating to the surface of a metal base material made of a metal material such as aluminum or copper.

[0052] When the substrate 11 is made of a resin substrate, examples of the resin substrate that can be used include a glass epoxy substrate (CEM-3, FR-4, etc.) made of glass fiber and epoxy resin, a paper phenol substrate (FR-1, FR-2) made of kraft paper or the like and phenol resin, a paper epoxy substrate (FR-3) made of paper and epoxy resin, or a polyimide substrate made of polyimide, etc. The substrate 11 may be a rigid substrate or a film-like flexible substrate.

[0053] The metal wiring formed on the substrate 11 is electrically connected to the power supply device 4. In this case, the electrodes or connector terminals formed on the substrate 11 and the power supply device 4 are connected by electric wires such as lead wires. The electric wires connecting the substrate 11 and the power supply device 4 are inserted, for example, into through holes provided in the frame 20.

[0054] The substrate 11 is disposed on the frame 20. The substrate 11 has a first surface on which the LEDs 12 are mounted, and a second surface facing away from the first surface. The first surface of the substrate 11 is the surface facing the cover member 30, and the second surface of the substrate 11 is the surface facing the frame 20. In this embodiment, the second surface of the substrate 11 is in contact with the frame 20.

[0055] As shown in FIGS. 8 and 9 , LEDs 12 are arranged on the substrate 11. Specifically, a plurality of LEDs 12 are arranged on a first surface of the substrate 11. In this embodiment, the plurality of LEDs 12 are mounted in a linear row along the longitudinal direction (Y-axis direction) of the substrate 11 at predetermined intervals. Specifically, the plurality of LEDs 12 are mounted over substantially the entire length of the substrate 11 in the longitudinal direction. Therefore, the plurality of LEDs 12 are mounted along the longitudinal direction of the frame 20 and the cover member 30. Note that the plurality of LEDs 12 may be mounted in multiple rows along the longitudinal direction of the substrate 11, rather than in a single row. The plurality of LEDs 12 emit light when a direct current is supplied from the power supply 4 via an electric wire connecting the power supply 4 and the substrate 11.

[0056] The LED 12 is an example of a light-emitting element. In this embodiment, each of the LEDs 12 is an individually packaged LED element (LED light source) with an SMD structure. Therefore, the light source unit 10 is an SMD-type LED module.

[0057] The SMD-type LED 12 includes a white resin or ceramic container (package), an LED chip (bare chip) placed in the container, and a sealing material that seals the LED chip. In this embodiment, the LED 12 is a white LED element that emits white light. In this case, for example, a blue LED chip that emits blue light when powered is used as the LED chip, and a silicone resin (phosphor-containing resin) containing a yellow phosphor such as YAG is used as the sealing material filled into the container.

[0058] The light source section 10 configured in this manner is disposed on a frame 20. Specifically, the substrate 11 of the light source section 10 is disposed on the frame 20.

[0059] The frame 20 is an elongated mounting member (base member) to which the light source section 10 is attached. Specifically, the substrate 11 of the light source section 10 is attached to the frame 20.

[0060] The frame 20 is formed in an elongated shape in the Y-axis direction, similar to the light source unit 10 and the fixture body 2. The light source unit 10 is supported by the frame 20. That is, the frame 20 is a support member that supports the light source unit 10. In the present embodiment, the frame 20 not only supports the light source unit 10, but also supports the cover member 30. Specifically, the board 11 on which the LEDs 12 are arranged is placed on the frame 20 and fixed to the frame 20, whereby the board 11 on which the LEDs 12 are arranged is supported by the frame 20.

[0061] The frame 20 is plate-shaped. In this embodiment, the frame 20 is made of metal and is configured by a metal plate. The frame 20 is formed into a predetermined shape by, for example, applying roll forming and / or press working to a single sheet of metal (metal plate) made of SPCC (Steel Plate Cold Commercial; cold rolled steel plate). The thickness of the metal plate configuring the frame 20 is, for example, 0.2 mm to 2 mm. In this embodiment, the frame 20 is formed by sheet metal working, so the thickness of the metal plate configuring the frame 20 is preferably 1 mm or less. Specifically, The thickness of the metal plate was 0.5 mm. The method for producing the frame 20 is not limited to roll forming and press working, and may be aluminum extrusion molding or the like.

[0062] 3 and 4, the plate-like frame 20 has a main plate portion 21, a pair of upright plate portions 22, a pair of horizontal plate portions 23, and a pair of side plate portions 24. As shown in Fig. 9, the main plate portion 21, the pair of upright plate portions 22, the pair of horizontal plate portions 23, and the pair of side plate portions 24 all extend along the longitudinal direction (Y-axis direction) of the frame 20. Also, as shown in Figs. 3 and 4, in this embodiment, the frame 20 is formed symmetrically in the XZ cross section with respect to the center of the frame 20 in the short side direction, but this is not limited to this.

[0063] The main board 21 is the main body of the frame 20. The main board 21 is a plate-like body that is generally flat and has a constant thickness. As shown in FIG. 3 , the light source 10 is disposed on the main board 21. Specifically, a board 11 on which LEDs 12 are disposed is placed on the main board 21. In other words, the main board 21 supports the board 11. In this embodiment, the board 11 and the main board 21 are in contact with each other. The LEDs 12 of the light source 10 are disposed in the center of the main board 21 in the width direction, but this is not limited to this.

[0064] The main board 21 has a first surface which faces the substrate 11, and a second surface which faces away from the first surface. In this embodiment, the first surface of the main board 21 is a board mounting surface to which the substrate 11 is attached. When the LED lighting device 1 is installed on a ceiling, the frame 20 is positioned so that the first and second surfaces of the main board 21 are approximately parallel to the ceiling surface. In this case, the first surface of the main board 21 is the surface facing the floor, and the second surface of the main board 21 is the surface facing the ceiling.

[0065] 3, the main plate 21 is located closer to the ceiling than the opening of the recess 2a of the fixture body 2 (i.e., closer to the bottom of the recess 2a). In this embodiment, the LEDs 12 are also located closer to the bottom of the recess 2a than the opening of the recess 2a of the fixture body 2. Specifically, the main plate 21 and the LEDs 12 are located closer to the ceiling than the opening edge 2a1 of the recess 2a. This increases the distance between the cover member 30 and the LEDs 12, thereby reducing uneven brightness (graininess) of the linearly arranged LEDs 12.

[0066] As shown in FIGS. 8 and 9, the main plate portion 21 is formed with a claw piece 21a, which is formed by cutting and raising a part of the frame 20 made of a metal plate.

[0067] The substrate 11 placed on the main plate 21 is fixed to the main plate 21 by engaging with the claws 21a. In this case, for example, the substrate 11 may be fixed to the main plate 21 by sliding the substrate 11 to engage with the claws 21a and then engaging the longitudinal end of the substrate 11 with another claw, or the substrate 11 may be fixed to the main plate 21 by crimping the claws 21a to engage with the claws 21a. Note that the method of fixing the main plate 21 and the substrate 11 is not limited to the locking structure using the claws 21a, and the main plate 21 and the substrate 11 may be adhesively fixed using an adhesive, adhesive tape, or the like. Also, although the main plate 21 and the substrate 11 are in contact with each other, this is not limiting. For example, a separate member such as a thermally conductive sheet may be inserted between the main plate 21 and the substrate 11. Furthermore, the main plate portion 21 is provided with a through hole through which an electric wire for electrically connecting the wiring of the substrate 11 and the power supply device 4 is inserted.

[0068] The pair of standing plate portions 22 are standing plate portions that stand upright on the main plate portion 21. Specifically, one of the pair of standing plate portions 22 stands upright from one end of the main plate portion 21, and the other of the pair of standing plate portions 22 stands upright from the other end of the main plate portion 21. The standing plate portions 22 and the horizontal plate portions 23 are provided between the main plate portion 21 and the side plate portions 24. Each of the pair of standing plate portions 22 is flat.

[0069] 3, in this embodiment, the main surface of each of the pair of standing plate portions 22 is perpendicular to the main surface of the main plate portion 21, and extends in a direction perpendicular to the short side direction of the frame 20. In other words, the standing plate portion 22 is provided perpendicular to the main plate portion 21. Specifically, each of the pair of standing plate portions 22 extends along the Z-axis direction. Note that the standing plate portion 22 may be formed so as to be inclined with respect to the main plate portion 21.

[0070] As shown in Figures 3 and 4, the recess 20a is formed by a main plate portion 21 and a pair of standing plate portions 22. The bottom of the recess 20a is the main plate portion 21. Therefore, the board 11 on which the LEDs 12 are mounted is placed on the bottom (main plate portion 21) of the recess 20a. In this manner, the frame 20 has the recess 20a on which the board 11 is placed. In addition, the side portions of the recess 20a are the standing plate portions 22. In this embodiment, the cross-sectional shape of the recess 20a is U-shaped. In other words, the cross-sectional shape of the spatial region of the recess 20a (the region surrounded by the main plate portion 21 and the pair of standing plate portions 22) is rectangular.

[0071] The cross-sectional shape of the recess 20a does not have to be U-shaped. In other words, the cross-sectional shape of the spatial region of the recess 20a does not have to be rectangular. For example, the cross-sectional shape of the spatial region of the recess 20a may be trapezoidal. In this case, the main plate portion 21 corresponds to the lower or upper base of the trapezoidal recess 20a, and the standing plate portion 22 corresponds to the side of the trapezoidal recess 20a that is inclined relative to the main plate portion 21.

[0072] The light source unit 10, which is disposed at the bottom of the recess 20a, is accommodated in the recess 20a. In this embodiment, the depth of the recess 20a is greater than the height (thickness) of the light source unit 10, and the light source unit 10 is accommodated so as not to protrude from the recess 20a. That is, the LED 12 is accommodated in the recess 20a. Therefore, the floor-side end (light-emitting surface) of the LED 12 of the light source unit 10 is located closer to the ceiling than the opening of the recess 20a. In this case, the floor-side end of the LED 12 may be located at a position set back from the opening of the recess 20a or may be flush with the opening of the recess 20a. By accommodating the LED 12 in the recess 20a in this way, the distance between the LED 12 and the main portion 31 of the cover member 30 can be increased, thereby suppressing uneven brightness (graininess) caused by the multiple LEDs 12 arranged at intervals in the longitudinal direction of the frame 20.

[0073] In the present embodiment, the LEDs 12 of the light source unit 10 are housed in the recess 20a so as not to protrude from the recess 20a in the Z-axis direction, but this is not limited thereto. For example, some or all of the LEDs 12 may protrude from the recess 20a. Even in this case, the substrate 11 of the light source unit 10 should be disposed so as not to protrude from the recess 20a, and the depth of the recess 20a should be greater than the thickness of the substrate 11 of the light source unit 10.

[0074] As shown in FIG. 4, when the depth of the recess 20a of the frame 20 is a [mm] and the width of the recess 20a is w1 [mm], the relationship w1 ≥ 10 × a is preferably satisfied. In other words, the ratio of the depth a of the recess 20a to the width w1 of the recess 20a is preferably 1:10 or greater. This prevents the light emitted from the LED 12 from being blocked by the corners of the opening of the recess 20a (the connection between the vertical plate portion 22 and the horizontal plate portion 23) even when the light source unit 10 is housed in the recess 20a. In other words, by satisfying w1 ≥ 10 × a, the light emitted from the LED 12 is less likely to be blocked. In this case, when the width of the recess 20a is w1 [mm] and the width of the horizontal plate portion 23 is w2 [mm], the relationship w1 > 2 × w2 is preferably satisfied.

[0075] Furthermore, the frame 20 has a protrusion 20b as a protrusion structure that protrudes from the main plate 21 toward the light emission side of the light source 10. In other words, if the direction of the light emission side of the light source 10 is defined as a first direction relative to the main plate 21, the protrusion 20b protrudes toward the first direction from the main plate 21. When the LED lighting device 1 is installed on a ceiling, the protrusion 20b of the frame 20 protrudes toward the floor.

[0076] A pair of protrusions 20b are provided on both sides of the main plate portion 21 in the short direction of the frame 20. By forming the recess 20a in the frame 20, a pair of protrusions 20b are formed on the frame 20. In this embodiment, the recess 20a is formed to be recessed toward the ceiling, and therefore each of the pair of protrusions 20b is formed to protrude toward the floor. Each of the pair of protrusions 20b is composed of a horizontal plate portion 23 and a standing plate portion 22. In this way, by forming the protrusions 20b on the main plate portion 21, the strength of the frame 20 can be improved. The recess 20a and the pair of protrusions 20b can be formed by deforming a metal plate constituting the frame 20 by press working or the like. Specifically, the recess 20a and the protrusions 20b are formed by bending a metal plate. Therefore, the plate thicknesses of the main plate portion 21, the standing plate portion 22, the horizontal plate portion 23, and the side plate portions 24 are the same.

[0077] The horizontal plate portions 23 are located to the sides of the recessed portion 20a. In this embodiment, the horizontal plate portions 23 are located on both sides of the recessed portion 20a in the short-side direction of the frame 20. That is, a pair of horizontal plate portions 23 are formed to sandwich the recessed portion 20a. Specifically, one of the pair of horizontal plate portions 23 is located on one side of the recessed portion 20a in the short-side direction of the frame 20, and the other of the pair of horizontal plate portions 23 is located on the other side of the recessed portion 20a in the short-side direction of the frame 20. That is, one of the pair of horizontal plate portions 23 is located on one side of the main plate portion 21 in the short-side direction of the frame 20, and the other of the pair of horizontal plate portions 23 is located on the other side of the main plate portion 21 in the short-side direction of the frame 20. Each of the pair of horizontal plate portions 23 is connected to the floor-side end of the upright plate portion 22 and extends outward from the floor-side end of the upright plate portion 22.

[0078] Furthermore, when a first direction, which is the direction of the light emission side of the light source unit 10 (LEDs 12) with respect to the main board unit 21, is defined as the floor-side direction, and a second direction, which is the direction opposite to the floor-side direction (first direction) with respect to the main board unit 21, is defined as the ceiling-side direction (i.e., the construction material side), at least a portion of each of the pair of horizontal board units 23 is located closer to the floor (first direction) than the main board unit 21. In this embodiment, the entire horizontal board unit 23 is located closer to the floor than the main board unit 21. Therefore, a pair of protruding units 20b, each composed of an upright board unit 22 and a horizontal board unit 23, is located closer to the floor than the main board unit 21. As a result, a spatial region is formed on the ceiling side of each protruding unit 20b. The spatial region is a region surrounded by the protruding units 20b on the ceiling side of the frame 20. In other words, this spatial region is a region surrounded by the upright board unit 22 and the horizontal board unit 23 on the ceiling side of the frame 20. In this embodiment, the side plate portion 24 is provided on the horizontal plate portion 23 opposite the standing plate portion 22, so this spatial region is an area surrounded by the standing plate portion 22, the horizontal plate portion 23, and the side plate portion 24, and is a concave recessed portion recessed toward the floor. As will be described in detail later, this spatial region may house internal electric wires, construction electric wires (external electric wires), structural members such as springs and screws, or functional parts. In particular, the presence of the side plate portion 24 as the outer wall of this spatial region makes it difficult for the internal electric wires housed in the spatial region to protrude from the spatial region. This prevents the internal electric wires from protruding and becoming trapped.

[0079] Furthermore, this spatial region may accommodate not only one internal wire but also multiple internal wires. The one or more internal wires accommodated in this spatial region are fixed to the frame 20 with a fixing member such as tape or metal fittings. In this case, this spatial region may be utilized to attach tape or to attach metal fittings. For example, when fixing the internal wires using metal fittings, the metal fittings are fixed to the spatial region so as to cover the spatial region in which the internal wires are accommodated. In this case, the metal fittings may be positioned between the upright plate portion 22 and the side plate portion 24 so as to be stretched.

[0080] The internal wires do not have to be stored in this spatial region. In this case, the internal wires may be arranged on the ceiling-facing surface of the main board portion 21 of the frame 20 and adhesively fixed with tape. However, if the tape is attached only to the main board portion 21, the tape is likely to peel off. Therefore, in this case, it is advisable to attach the tape by utilizing this spatial region. For example, it is advisable to arrange the internal wires on the ceiling-facing surface of the main board portion 21 and attach the tape so that it spans the main board portion 21 and the standing board portion 22. In this way, the tape is attached to two surfaces facing in different directions, which makes it possible to prevent the tape from peeling off.

[0081] figure 3 As shown, each of the pair of horizontal plate portions 23 is made up of a plurality of plate portions. In this embodiment, the horizontal plate portion 23 is made up of two plate portions, and the plurality of plate portions include parallel plate portions 23a (first plate portions) parallel to the main plate portion 21 and inclined plate portions 23b (second plate portions) inclined relative to the main plate portion 21. In other words, the protruding portion 20b has parallel plate portions 23a and inclined plate portions 23b. Both the parallel plate portions 23a and the inclined plate portions 23b are flat plate-shaped.

[0082] In the horizontal plate portion 23, the parallel plate portion 23a extends in the short-side direction (width direction) of the frame 20, and the inclined plate portion 23b extends in a direction inclined with respect to the short-side direction of the frame 20. In this embodiment, the inclined plate portion 23b is inclined so as to widen toward the ceiling. Therefore, the protruding portion 20b formed by the standing plate portion 22 and the horizontal plate portion 23 is configured to be inclined outward as a whole. The inclined plate portion 23b is located outside the parallel plate portion 23a and is connected to the end of the side plate portion 24. In this embodiment, Inclined plate part 23b The length of Parallel plate part 23a is longer than the length of But it's not limited to this .

[0083] 3 and 4, at least a portion of the pair of protrusions 20b formed on the frame 20 is located closer to the floor than the opening surface of the recess 2a of the fixture body 2. In other words, at least a portion of the pair of protrusions 20b is located closer to the floor than the opening edge 2a1 of the recess 2a of the fixture body 2. In this embodiment, the pair of horizontal plate portions 23 are located closer to the floor than the opening surface of the recess 2a of the fixture body 2. Specifically, both the parallel plate portion 23a and the inclined plate portion 23b of the horizontal plate portion 23 are located closer to the floor than the opening surface of the recess 2a.

[0084] The protruding portion 20b, which is composed of the horizontal plate portion 23 and the standing plate portion 22, may be configured to be inclined inward. In this case, the inclined plate portion 23b of the horizontal plate portion 23 is located inside the parallel plate portion 23a and is connected to the end of the main plate portion 21, and the standing plate portion 22 is located outside the parallel plate portion 23a of the horizontal plate portion 23 and is connected to the end of the side plate portion 24.

[0085] As shown in FIGS. 3 and 4, the pair of side plate portions 24 are plate-shaped side portions and are formed as a pair of legs (feet) on the frame 20. Each of the pair of side plate portions 24 extends toward the side opposite to the light emission side of the light source unit 10. The pair of side plate portions 24 are extending portions that extend toward the construction material on which the fixture main body 2 is installed. In the present embodiment, the construction material on which the fixture main body 2 is installed is the ceiling, and the fixture main body 2 is installed on the ceiling. Therefore, the pair of side plate portions 24 extend toward the ceiling side (second direction side). Specifically, each of the pair of side plate portions 24 extends linearly along the Z-axis direction.

[0086] When the LED lighting device 3 is attached to the fixture body 2, the pair of side plate portions 24 are housed in the recessed portions 2a of the fixture body 2. Each side plate portion 24 faces a side surface of the recessed portion 2a. Each of the pair of side plate portions 24 extends along a corresponding side surface (side wall) of the pair of recessed portions 2a. As shown in FIG. 3, the side plate portions 24 and the side surfaces of the recessed portions 2a are parallel to each other.

[0087] Each of the pair of side plates 24 extends from each of the pair of protruding portions 20b toward the ceiling. In this embodiment, each of the pair of side plates 24 extends toward the ceiling from an end of the horizontal plate portion 23. One of the pair of side plates 24 extends toward the ceiling from an outer end of one of the pair of horizontal plate portions 23, and the other of the pair of side plates 24 extends toward the ceiling from an outer end of the other of the pair of horizontal plate portions 23. In other words, the pair of side plates 24 extend toward the ceiling from the outer end of the protruding portion 20b in the short direction of the frame 20. Specifically, each of the pair of side plates 24 is connected to the inclined plate portion 23b of the horizontal plate portion 23 and extends toward the ceiling from the end of the inclined plate portion 23b.

[0088] Each of the pair of side plate portions 24 extends from the outer end of the corresponding horizontal plate portion 23 toward the ceiling, beyond the position of the main plate portion 21. Therefore, the tip of each side plate portion 24 (extending portion) is located closer to the ceiling (in the second direction) than the main plate portion 21. In other words, the tip of the side plate portion 24 (extending portion) is located closer to the ceiling than the bottom of the recess 20a. In this embodiment, the side plate portions 24 are connected to the inclined plate portions 23b of the horizontal plate portions 23. Note that the side plate portions 24 are not formed at both longitudinal ends of the frame 20, and the longitudinal ends of the frame 20 are open.

[0089] The connection portion between the side plate portion 24 and the horizontal plate portion 23 (in this embodiment, the connection portion between the side plate portion 24 and the inclined plate portion 23b) is preferably located closer to the floor (first direction side) than the main plate portion 21, which is the bottom of the recess 20a in the frame 20. This makes it easier for the light emitted from the LEDs 12 to wrap around to the spatial region formed near the cover end 31a of the cover member 30. Note that if the connection portion between the side plate portion 24 and the horizontal plate portion 23 is located closer to the ceiling than the bottom of the recess 20a, the light emitted from the LEDs 12 will wrap around to the ceiling side, causing light leakage and light loss.

[0090] Furthermore, the connection portion between the side plate portion 24 and the horizontal plate portion 23 (in the present embodiment, the connection portion between the side plate portion 24 and the inclined plate portion 23b) is at approximately the same height as the opening edge 2a1 of the recess 2a of the fixture body 2, but the connection portion between the side plate portion 24 and the horizontal plate portion 23 may be located closer to the ceiling than the opening edge 2a1 of the recess 2a of the fixture body 2. This makes it possible to prevent shadows from appearing on the exterior of the cover member 30.

[0091] Furthermore, it is preferable that the connection portion between the side plate portion 24 and the horizontal plate portion 23 is located closer to the ceiling (toward the second direction) than the connection portion between the attachment portion 33 and the extension portion 32 in the cover member 30. This makes it possible to prevent shadows from appearing on the appearance of the cover member 30. In this embodiment, the position of the opening edge 2a1 of the recess 2a in the fixture body 2 is the same as the position of the connection portion between the attachment portion 33 and the extension portion 32 in the cover member 30.

[0092] In this way, the connection portion between the side plate portion 24 and the horizontal plate portion 23 should be located in the area between the position of the main plate portion 21, which is the bottom of the recess 20a, and the position of the opening edge 2a1 of the recess 2a of the device main body 2 or the position of the connection portion between the mounting portion 33 and the extension portion 32 in the cover member 30.

[0093] Furthermore, the length (extension amount) of the side plate portion 24 is longer than the depth of the recess 20a. In other words, if the depth of the recess 20a is a [mm] and the length of the side plate portion 24 is b [mm], the relationship b ≥ a should be satisfied. While the upper limit of the length b of the side plate portion 24 is not particularly limited, the depth a of the recess 20a and the length b of the side plate portion 24 should preferably satisfy the relationship b ≤ 2 × a. In other words, the ratio of the depth of the recess 20a to the length of the side plate portion 24 should preferably be 1:2 or less. Satisfying the relationship b ≥ a increases the strength of the frame 20, thereby improving the overall strength of the LED lighting device 3. This makes the LED lighting device 3 easier to handle during installation, etc. Satisfying the relationship b ≥ a also increases the length of the side plate portion 24. This allows the cover member 30 to be easily attached to the frame 20 by snap-in. Satisfying the relationship b ≥ a also allows the overall thickness of the frame 20 to be reduced in the Z-axis direction, thereby enabling the frame 20 to be made thinner. It should be noted that the relational expression b≧a does not necessarily have to be satisfied.

[0094] Furthermore, the connection portion between the side plate portion 24 and the horizontal plate portion 23 may be located closer to the ceiling than the main plate portion 21. In this case, the length b of the side plate portion 24 is preferably longer than the depth a of the recess 20a (i.e., b > a), but the length b of the side plate portion 24 may be shorter than the depth a of the recess 20a. In this case, there is no particular lower limit to the length b of the side plate portion 24. The depth a of the recess 20a is preferably 3 mm or more.

[0095] As shown in FIGS. 3 and 4 , the tip portions of each of the pair of side plate portions 24 are provided with bent portions 24a formed to be bent. The bent portions 24a constitute the tip portions of the side plate portions 24. In the present embodiment, the bent portions 24a are folded back by folding back the tip portions of the side plate portions 24 in the thickness direction. Therefore, the bent portions 24a are composed of a folded back portion and a portion (a non-folded portion) facing the folded back portion. The bent portions 24a have a hemmed bend structure formed by, for example, hemming. Note that the bent portions 24a are not limited to those formed by hemming, but may also have a curled bend structure formed by curling and rolling up the tip portions of the side plate portions 24. Furthermore, while the bent portions 24a are formed by being bent inward in the width direction, this is not a limitation and the bent portions 24a may be formed by being bent outward in the width direction. Furthermore, the bent portions 24a may not necessarily be formed on the side plate portions 24.

[0096] Mounting portions 33 of the cover member 30 are attached to each of the pair of side plate portions 24. In the present embodiment, the cover member 30 is attached to the frame 20 by snapping in. Specifically, the cover member 30 can be fixed to the frame 20 by engaging abutting portions 33a provided on the mounting portions 33 of the cover member 30 with bent portions 24a of the side plate portions 24 from the width direction of the cover member 30. Therefore, the bent portions 24a are abutting portions that come into contact with the mounting portions 33.

[0097] The light source unit 10 supported by the frame 20 is covered with a cover member 30. The cover member 30 covers the LEDs 12 of the light source unit 10. In this embodiment, the cover member 30 covers all of the LEDs 12 in the light source unit 10. Furthermore, the cover member 30 covers not only the LEDs 12 but also the substrate 11 of the light source unit 10, and is disposed opposite the substrate 11 so as to cover the multiple LEDs 12. In other words, the cover member 30 covers the entire light source unit 10. In this way, the cover member 30 is attached to the frame 20 so as to cover the light source unit 10.

[0098] The cover member 30 is an example of a light-transmitting cover that transmits light emitted from the light source unit 10 (LEDs 12). In this embodiment, the cover member 30 is a diffusion cover that not only transmits light but also diffuses light. Therefore, the light from the LEDs 12 that enters the cover member 30 is diffused (scattered) by the cover member 30 and passes through the cover member 30.

[0099] 8, the cover member 30 further covers the frame 20 in which the light source unit 10 is arranged. In the present embodiment, the cover member 30 covers the entire frame 20 in which the light source unit 10 is arranged. Note that the cover member 30 is formed in an elongated shape in the Y-axis direction, similar to the light source unit 10 and the frame 20.

[0100] The cover member 30 is attached to the frame 20. The cover member 30 and the frame 20 form a cylindrical body, and the light source unit 10 is housed inside this cylindrical body.

[0101] As shown in Figures 3 and 8, the cover member 30 has a main portion 31 that covers the light source unit 10, an extension portion 32 that is an extension portion that extends toward the inside of the cover member 30, and an attachment portion 33 to which the frame 20 is attached.

[0102] 3, there is a gap between the cover member 30 and the inner surface of the recess 2a of the device body 2. In this embodiment, this gap is the gap between the attachment portion 33 of the cover member 30 and the inner wall surface of the recess 2a.

[0103] The main portion 31 is a main body portion of the cover member 30, and transmits light emitted from the LEDs 12 of the light source unit 10 to irradiate the light to the outside. The main portion 31 covers the light source unit 10. In other words, the main portion 31 faces the light source unit 10. Therefore, the main portion 31 has a surface facing the substrate 11 and the LEDs 12.

[0104] The main portion 31 constitutes the exterior of the cover member 30. As shown in FIG. 9, the main portion 31 is elongated in the Y-axis direction and formed in a gutter shape. The main portion 31 has, for example, a flat, approximately semi-cylindrical shape. Therefore, the main portion 31 has an elongated rectangular opening end face extending in the Y-axis direction. Furthermore, the cross-sectional shape of the main portion 31 when cut along the X-axis direction has a curved shape that is curved in a substantially arc shape. Note that the shape of the main portion 31 is not limited to a barrel-like R-shape, and may be an angular shape such as a U-shape, a rectangular shape with a partially constricted side, or a cylindrical shape.

[0105] In this embodiment, when the cover member 30 is viewed from the longitudinal direction of the LED lighting device 3, the outer shape of the cover member 30 is D-shaped as a whole. Specifically, when viewed from the longitudinal direction of the LED lighting device 3, the outer shape of the main portion 31 is D-shaped as a whole. As described above, the side shape of the LED lighting device 1, which is made up of the LED lighting device 3 and the fixture body 2, is also D-shaped as a whole, making the boundary between the LED lighting device 3 and the fixture body 2 less noticeable. Therefore, as shown in FIG. 3 , when viewed from the Y-axis direction, the outer surface of the main portion 31 of the cover member 30 and the outer surface (inclined surface) of the inclined surface portion 2b of the fixture body 2 are flush with each other. In other words, the outer surfaces of the main portion 31 and the inclined surface portion 2b are continuous, and there is no step, or even if there is a step, it is slight, at the boundary between the outer surface of the main portion 31 and the outer surface of the inclined surface portion 2b.

[0106] The main portion 31 has a cover end 31a, which is an outer end located outside the protrusion 20b of the frame 20 in the short direction of the frame 20. Specifically, the cover end 31a is a portion of the main portion 31 located outside the attachment portion 33. The cover end 31a faces the opening edge 2a1 of the recess 2a of the appliance body 2. The opening edge 2a1 of the recess 2a is a flat surface parallel to the XY plane. In this embodiment, the cover end 31a abuts against the appliance body 2. Specifically, the cover end 31a abuts against the opening edge 2a1 (appliance body side) of the recess 2a of the appliance body 2.

[0107] The extension portion 32 extends toward the light source unit 10. In the present embodiment, the extension portion 32 is connected to the main portion 31 and extends from the main portion 31 toward the light source unit 10. Therefore, the extension portion 32 extends from the main portion 31 toward the inside of the cover member 30. Specifically, the extension portion 32 extends from the inner surface of the main portion 31 toward the light source unit 10. The extension portion 32 also extends toward the main plate portion 21 of the frame 20. In the present embodiment, the extension portion 32 extends from the main portion 31 toward the main plate portion 21. Note that the extension portion 32 extending toward the light source unit 10 or the main plate portion 21 means that a portion of the extension portion 32 extends toward the light source unit 10 or the main plate portion 21. The extension portion 32 is a plate-shaped piece with a constant thickness, and extends in the Y-axis direction as shown in FIGS. 8 and 9 .

[0108] A pair of extension portions 32 are provided. The pair of extension portions 32 are provided on either side of the light source unit 10 in the short-side direction of the frame 20. Specifically, the pair of extension portions 32 are provided at positions facing each other in the X-axis direction. In the present embodiment, the pair of extension portions 32 are formed symmetrically in the XZ cross section with respect to the center of the short-side direction of the cover member 30, but this is not limited to this.

[0109] Each extension portion 32 covers at least a portion of the protruding portion 20b of the frame 20. That is, each extension portion 32 covers at least a portion of the protruding portion 20b and faces the main plate portion 21. In this embodiment, each extension portion 32 covers the entire protruding portion 20b. Therefore, each extension portion 32 extends from the main portion 31 beyond the protruding portion 20b.

[0110] Furthermore, the extension portion 32 is formed in an arch shape so as to cover the protrusion 20b. Therefore, the extension portion 32 has an arch shape that is convex toward the main portion 31. This allows the light emitted from the light source unit 10 to be reflected by the extension portion 32, thereby improving the light extraction efficiency. Furthermore, when the protrusion 20b is formed on the frame 20, a shadow is likely to be cast on the outer edge of the cover member 30. However, by providing the arch-shaped extension portion 32 so as to cover the protrusion 20b, it is possible to make it less likely that a shadow will be cast on the outer edge of the cover member 30.

[0111] Each extension portion 32 has an outer extension portion 32a located outside the protrusion 20b, and an inner extension portion 32b extending from the outer extension portion 32a toward the light source unit 10, covering at least a portion of the protrusion 20b. In this embodiment, the inner extension portion 32b covers the entire protrusion 20b. The outer extension portion 32a is located outside the horizontal plate portion 23 of the frame 20 in the short direction of the frame 20.

[0112] The outer extending portion 32a is a portion located outside the mounting portion 33, and the inner extending portion 32b is a portion located inside the mounting portion 33. In this case, as shown in FIG. 3, the outer extending portion 32a is a portion formed in a flat plate shape, and the inner extending portion 32b is a portion formed so as to bend at the horizontal plate portion 23 of the frame 20. The inner extending portion 32b is bent so as to cover the protruding portion 20b of the frame 20.

[0113] Further, each extension portion 32 extends from the inner surface of the main portion 31 toward the LED 12. Each extension portion 32 extends from a position on the inner surface of the main portion 31 closer to the ceiling (second direction) than the portion of the protruding portion 20b of the frame 20 that is located closest to the floor (first direction) toward the light source unit 10 so as to cover the protruding portion 20b. In this embodiment, the portion of the protruding portion 20b of the frame 20 that is located closest to the floor is the parallel plate portion 23a of the horizontal plate portion 23. In other words, each extension portion 32 extends from a position closer to the ceiling than the parallel plate portion 23a of the protruding portion 20b toward the light source unit 10. Specifically, each extension portion 32 is connected to the tip of the cover end portion 31a of the main portion 31. Therefore, in each extension portion 32, the outer extension portion 32a is connected to the tip of the cover end portion 31a of the main portion 31, and the outer extension portion 32a extends from the cover end portion 31a of the main portion 31 toward the light source portion 10 side.

[0114] In this way, the extension portion 32 extends toward the light source unit 10 from a position closer to the ceiling than the portion of the horizontal plate portion 23 of the frame 20 closest to the floor, covering the protruding portion 20b of the frame 20. This allows a spatial region that extends toward the ceiling outside the protruding portion 20b of the frame 20 to be formed near the cover end 31a of the cover member 30. As a result, even if the frame 20 is provided with the protruding portion 20b that protrudes toward the floor, light emitted from the LEDs 12 that does not pass through the main portion 31 of the cover member 30 and is reflected by the inner surface of the main portion 31 can be guided around to the spatial region formed near the cover end 31a of the cover member 30. This allows the light emitted from the LEDs 12 to sufficiently reach the cover end 31a of the main portion 31 of the cover member 30, thereby allowing the light to be sufficiently illuminated up to the vicinity of the cover end 31a of the main portion 31 of the cover member 30. Therefore, the cover member 30 can be illuminated over the entire width direction (X-axis direction), and it is possible to prevent the width direction ends of the cover member 30 from becoming dark. In other words, it is possible to reduce the darkness of the width direction ends of the cover member 30 caused by the protrusions 20b of the frame 20.

[0115] Furthermore, by providing the extension portion 32 on the cover member 30, the luminous flux of the illumination light emitted from the LED lighting device 3 toward the ceiling (upward luminous flux) can be reduced. As a result, the luminous flux of the illumination light emitted from the LED lighting device 3 toward the floor can be increased, thereby improving the light extraction efficiency of the LED lighting device 3 toward the floor. Furthermore, by increasing the luminous flux toward the floor, the illuminance directly below the LED lighting fixture 1 can be improved. As a result, when multiple LED lighting fixtures 1 are installed, the number of LED lighting fixtures 1 to be installed can be reduced.

[0116] The outer extension portion 32a of the extension portion 32 is shaft In the Z-axis direction, the outer extension 32a has a portion that overlaps the gap between the inner surface of the recess 2a and the attachment portion 33. The outer extension 32a faces the opening edge 2a1 of the recess 2a. That is, in the Z-axis direction, the outer extension 32a overlaps with the opening edge 2a1. Therefore, the outer extension 32a is formed to span the gap between the inner surface of the recess 2a and the attachment portion 33.

[0117] The portion of the outer extension portion 32a of each extension portion 32 facing the opening edge 2a1 and the cover end portion 31a of the main portion 31 form a protrusion that protrudes outward from the mounting portion 33. Specifically, this protrusion is formed to have a V-shaped cross section in the XZ cross section. The outer extension portion 32a does not protrude outward beyond the outer end of the width direction of the opening surface of the recess 2a of the device body 2. Specifically, the outer extension portion 32a protrudes outward beyond the opening edge 2a1 of the recess 2a. X It does not protrude outward in the axial direction. Specifically, the connection portion (the apex of the V) between the outer extension portion 32a and the cover end portion 31a of the main portion 31 is located on approximately the same plane as the inclined surface portion 2b of the fixture body 2. This allows the inclined surface portion 2b of the fixture body 2 and the surface of the main portion 31 of the cover member 30 to form a single continuous surface, improving the design of the LED lighting device 3.

[0118] The outer extension portion 32a of each extension portion 32 is a portion that connects the inner extension portion 32b and the main portion 31. Therefore, one end of the outer extension portion 32a is connected to the inner extension portion 32b, and the other end of the outer extension portion 32a is connected to the inner surface of the main portion 31.

[0119] The outer extension portion 32a is a contact portion that can come into contact with the opening edge 2a1 of the recess 2a of the fixture body 2. When the LED lighting device 3 is stored in the recess 2a of the fixture body 2, the outer extension portion 32a may or may not come into contact with the opening edge 2a1. In other words, there may be a gap between the outer extension portion 32a and the opening edge 2a1, or the outer extension portion 32a and the opening edge 2a1 may be in contact with each other. In this embodiment, the outer extension portion 32a comes into contact with the opening edge 2a1.

[0120] Furthermore, when the LED lighting device 3 is attached to the fixture body 2 by being pulled up by the elastic holding member 6 (kick spring), the outer extension 32a abuts against the opening edge 2a1 of the fixture body 2, thereby attaching the LED lighting device 3 to the fixture body 2. For this reason, it is desirable that the outer extension 32a and the opening edge 2a1 abut. However, a gap may occur between the outer extension 32a and the opening edge 2a1 due to warping, twisting, or undulation of various components such as the frame 20 or the cover member 30, or variations during installation of the LED lighting fixture 1 (distortion due to bolt tightening, variations due to wiring, etc.).

[0121] The outer extension portion 32a may be a part of the main portion 31. In this case, the extension portion 32 is composed of only the inner extension portion 32b.

[0122] At least a portion of the extension portion 32 has a shape that follows a portion of the frame 20. In this embodiment, at least a portion of the extension portion 32 has a shape that follows the protruding portion 20b of the frame 20. Specifically, as described above, the inner extension portion 32b of the extension portion 32 has a shape that follows the protruding portion 20b of the frame 20. Specifically, the inner extension portion 32b has a shape that follows the inclined plate portion 23b of the protruding portion 20b of the frame 20.

[0123] As shown in Fig. 3, the inner extension portion 32b is bent so as to protrude toward the floor. That is, the inner extension portion 32b is formed to have a protruding portion that protrudes toward the floor, similar to the protruding portion 20b of the frame 20. The protruding portion 20b of the frame 20 protrudes toward the bent portion (protruding portion) of this inner extension portion 32b. Therefore, the protruding portion 20b of the frame 20 is formed to fit into the protruding portion of the inner extension portion 32b.

[0124] Furthermore, at least a portion of the inner extension portion 32b can abut against the frame 20. As will be described later, in this embodiment, the tip of the inner extension portion 32b abuts against the main plate portion 21 of the frame 20. Note that the cover member 30 basically contacts the frame 20 only at two points, the tip of the inner extension portion 32b and the tip (abutment portion 33a) of the mounting portion 33, and therefore a gap exists between the inner extension portion 32b and the protruding portion 20b of the frame 20. However, depending on variations in parts, assembly variations, construction variations, etc., there may be cases where the inner extension portion 32b and a portion of the protruding portion 20b come into contact. Note that the inner extension portion 32b and the protruding portion 20b may be intentionally brought into contact with each other.

[0125] The tip of each extension portion 32 on the light source unit 10 side is located closer to the center of the frame 20 than the protrusion 20b of the frame 20. Specifically, the tip of the inner extension portion 32b of the extension portion 32 is located to the side of the protrusion 20b.

[0126] The inner extension portion 32b has a first plate portion 32b1 that faces the protrusion portion 20b of the frame 20, a second plate portion 32b2 that extends from a position beyond the protrusion portion 20b toward the light source portion 10, and a third plate portion 32b3 that stands upright from the second plate portion 32b2 toward the ceiling side.

[0127] The first plate portion 32b1 faces the horizontal plate portion 23 that constitutes the protruding portion 20b, and, like the horizontal plate portion 23, is composed of an inclined plate portion and a parallel plate portion.

[0128] The second plate portion 32b2 is an inclined plate portion that extends from a position beyond the protruding portion 20b (horizontal plate portion 23) so as to be inclined toward the main plate portion 21 of the frame 20. Note that the second plate portion 32b2 does not have to be inclined. For example, the second plate portion 32b2 may be parallel to the main plate portion 21 of the frame 20.

[0129] The third plate portion 32b3 is an upright plate portion that stands from the tip of the second plate portion 32b2 toward the ceiling. In other words, the third plate portion 32b3 stands on the main plate portion 21 of the frame 20. Specifically, the third plate portion 32b3 is a vertical portion that is formed perpendicular to the main plate portion 21 of the frame 20. The third plate portion 32b3 is the tip of the inner extension portion 32b. In other words, the tip of the third plate portion 32b3 is the tip of the extension portion 32 on the light source unit 10 side. The height (length) of the third plate portion 32b3 is shorter than the height of the protrusion 20b formed on the main plate portion 21 of the frame 20 (in this embodiment, the position of the horizontal plate portion 23).

[0130] The inner extension portion 32b is formed by inclining the inner portion of the cover member 30 in the lateral direction of the cover member 30. outer part The inclination of the second plate portion 32b2 (inclined plate portion) of the inner extension portion 32b is gentler than the inclination of the inclined plate portion of the first plate portion 32b1 of the inner extension portion 32b. In other words, the inclination of the portion on the light source unit 10 side is gentler than the inclination of the portion on the mounting portion 33 side. Specifically, the inclination of the second plate portion 32b2 (inclined plate portion) of the inner extension portion 32b is gentler than the inclination of the inclined plate portion of the first plate portion 32b1 of the inner extension portion 32b. In other words, the inclination angle of the second plate portion 32b2 (inclined plate portion) of the inner extension portion 32b is smaller than the inclination angle of the inclined plate portion of the first plate portion 32b1 of the inner extension portion 32b.

[0131] The tip of each extension portion 32 on the light source unit 10 side is located closer to the center of the frame 20 than the protrusion 20b of the frame 20. Specifically, the tip of the third plate portion 32b3 of the inner extension portion 32b of each extension portion 32 is located closer to the center of the frame 20 than the inner end of the horizontal plate portion 23 of the frame 20.

[0132] The third plate portion 32b3 of the inner extending portion 32b is formed so that its tip extends toward the substrate 11. In the present embodiment, the third plate portion 32b3 is formed so that it slopes toward the substrate 11.

[0133] The extension portion 32 has an abutment portion 32c that abuts against the main plate portion 21 of the frame 20. The abutment portion 32c of the extension portion 32 abuts against the main plate portion 21 of the frame 20 in a pressed state. In this embodiment, the abutment portion 32c is the tip end of the extension portion 32. Therefore, the tip end of the extension portion 32 abuts against the main plate portion 21 of the frame 20 in a pressed state. Specifically, the abutment portion 32c is the tip end of the inner extension portion 32b. In other words, the abutment portion 32c is the third plate portion 32b3 of the inner extension portion 32b. In this case, the end face of the tip end of the third plate portion 32b3, which is the abutment portion 32c, abuts against the main plate portion 21 of the frame 20 in a pressed state.

[0134] The extension portion 32 pressed against the frame 20 is elastically deformed. In other words, the extension portion 32 is elastically deformed, and the reaction force presses the abutment portion 32c (third plate portion 32b3) against the main plate portion 21 of the frame 20. Therefore, the attitude of the extension portion 32 relative to the frame 20 is different before and after the cover member 30 is attached to the frame 20.

[0135] Each extension portion 32 is preferably disposed outside the directional characteristics (light distribution angle) of the LED 12. For example, since the light distribution angle (half beam angle) of the LED 12 is 120°, the opening angle (tilt angle of the second plate portion 32b2) of the pair of extension portions 32 is preferably 120° or more. This reduces the loss of light emitted from the LED 12 in the cover member 30, and most of the light emitted from the LED 12 passes through the cover member 30 and is emitted to the outside. In other words, the light extraction efficiency of the cover member 30 can be improved. The opening angle of the pair of second plate portions 32b2 is preferably 160° or more. Note that the upper limit of the opening angle of the pair of second plate portions 32b2 is, for example, 170°. Note that the light extraction efficiency can be further improved by making the extension portion 32 white (highly reflective and opaque) using two-color molding.

[0136] A spatial region S1 exists between each extension portion 32 and the frame 20. Specifically, the spatial region S1 exists between the inner extension portion 32b of each extension portion 32 and the main plate portion 21 of the frame 20. The spatial region S1 may house the screw base or screw head when various components are screwed together, or the crimped portion when the frame 20 is crimped to another metal component. In this embodiment, as shown in FIG. 4 , the spatial region S1 houses the screw base of a screw 60 for fixing the power supply device 4 to the frame 20.

[0137] Additionally, the spatial region S1 may house functional components or electric wires inside the fixture that are wired in a factory when the LED lighting device 3 is manufactured.

[0138] The functional components housed in the spatial region S1 are, for example, function expansion modules. Examples of the function expansion module include a sensor unit equipped with various sensors such as a motion sensor and a brightness sensor, a wireless module having an antenna and a control circuit for receiving wireless signals, an infrared module having a light receiving element and a control circuit for receiving infrared signals, a pull switch, or a second light source separate from the LED 12 (first light source) mounted on the substrate 11. The wireless signal or infrared signal is, for example, a remote control signal for turning the LED 12 on and off or adjusting the brightness and color of the LED 12, or a setting signal for performing various settings of the LED lighting device 3. The second light source may be a light source for monitor display (monitor lamp), a light source for controlling the light distribution of the illumination light emitted from the cover member 30 (for example, a light source for achieving wide light distribution), or a color light source for effecting. The second light source may be a red, blue, or green LED light source (for example, a red, blue, or green LED light source), or an emergency light source that turns on in an emergency. When an emergency light source is used as the second light source, the cover and / or cover member 30 that covers the second light source may be made of a flame-retardant material such as glass. The term "wireless" is not limited to a specific frequency band, but may refer to wireless in a broad sense, including radio waves and light (including infrared rays). The antenna in the wireless module may be, for example, a pattern antenna, a chip antenna, a rod antenna, or a plate antenna, but is not limited to these. The wireless module may have an antenna area and a control area. The connection between the wireless module and the power supply device may be a connector on both ends of an electric wire, or only one of the wireless module and the power supply device may be a connector. The connection between the wireless module and the power supply device 4 may be a wireless connection via wireless communication, rather than a wired connection via an electric wire.

[0139] The internal electric wires stored in the spatial region S1 are, for example, electric wires connected to the power supply device 4 or electric wires connecting the plurality of light source units 10 together. Of these, the electric wires connected to the power supply device 4 include a power supply line connecting the power supply device 4 and the light source units 10, a power line connecting the power supply device 4 and the power terminal block 8, a dimming control line connecting the power supply device 4 and the dimming terminal block 9, and a control line connected to a function expansion module (sensor, etc.) described later.

[0140] The mounting portion 33 of the cover member 30 extends on the side opposite to the light emission side of the light source unit 10. Specifically, the mounting portion 33 is connected to the extension portion 32 and extends from a part of the extension portion 32 toward the ceiling. The mounting portion 33 is attached to a pair of side plate portions 24 of the frame 20.

[0141] Furthermore, even if foreign objects such as insects or dust invade the spatial region S1, the distance between the spatial region S1 and the main portion 31 is long, so that foreign objects present in the spatial region S1 are unlikely to cast shadows. Furthermore, the gap region between the inclined plate portion 23b of the frame 20 and the inner extension portion 32b is close to the main portion 31, so if an insect is present in this gap region, it is likely to cast a shadow. However, the small size of this gap region makes it difficult for insects to accumulate. Even if an insect does invade this gap region, because the insect has propulsion capabilities, it will move from this gap region toward the spatial region S1 and enter the spatial region S1 where shadows are unlikely to be cast. Furthermore, because the entrance (exit) of the spatial region S1 is narrow, once the insect enters the spatial region S1, it will not exit the spatial region S1. In other words, the insect can be trapped in the spatial region S1 where shadows are unlikely to be cast. This does not apply if the extension portion 32 is made of an opaque material such as white resin.

[0142] In this embodiment, a pair of mounting portions 33 are provided to sandwich the frame 20. The pair of mounting portions 33 are formed as a pair of legs (feet) of the cover member 30. The pair of mounting portions 33 have the same length in the Z-axis direction. As shown in FIGS. 8 and 9, each of the pair of mounting portions 33 is formed elongated along the Y-axis direction. The pair of mounting portions 33 also have the same length in the Y-axis direction.

[0143] When the cover member 30 is attached to the frame 20, each of the pair of attachment portions 33 is elastically deformed. As will be described in detail later, the posture of each attachment portion 33 relative to each side plate portion 24 is different before and after the cover member 30 is attached to the frame 20.

[0144] As shown in FIGS. 3 and 8 , each of the pair of mounting portions 33 has abutting portions 33a that abut against the pair of side plate portions 24 of the frame 20. That is, the mounting portions 33 contact the side plate portions 24 of the frame 20 at the abutting portions 33a. In this embodiment, the abutting portions 33a of the mounting portions 33 are tip portions of the mounting portions 33. Therefore, the tip portions of the mounting portions 33 contact the side plate portions 24 of the frame 20. Also, in this embodiment, the abutting portions 33a of the mounting portions 33 are engaging portions that engage with the tip portions of the side plate portions 24 of the frame 20. Therefore, the tip portions of the mounting portions 33 engage with the tip portions of the side plate portions 24 of the frame 20.

[0145] In the present embodiment, the abutting portions 33a serving as engaging portions are, for example, bent portions formed by bending the tip portions of the mounting portions 33 into an L shape. Bent portions 24a provided at the tip portions of the side plate portions 24 of the frame 20 engage with the abutting portions 33a, thereby locking and fixing the pair of mounting portions 33 of the cover member 30 and the pair of side plate portions 24 of the frame 20 to each other. As a result, the pair of mounting portions 33 of the cover member 30 are fixed to the frame 20 in a manner that embraces the frame 20.

[0146] The side plate portion 24 of the frame 20 and the mounting portion 33 of the cover member 30 may also be fixed together with a screw. In this case, the screw is screwed into the portion where the side plate portion 24 and the mounting portion 33 overlap from the outside of the mounting portion 33. Alternatively, the frame 20 and the cover member 30 may be fixed together with a crimping structure. For example, the frame 20 and the cover member 30 may be fixed together by crimping a portion of the side plate portion 24 of the frame 20 to the mounting portion 33 of the cover member 30. The frame 20 and the cover member 30 may also be fixed together with a separate part such as a metal fitting.

[0147] In the present embodiment, as described above, the cover member 30 is attached to the frame 20 by snapping the attachment portions 33 of the cover member 30 into the side plate portions 24 of the frame 20 from the width direction of the cover member 30, but this is not limiting. For example, the cover member 30 may be attached to the frame 20 by inserting the cover member 30 from the end of the frame 20 in the longitudinal direction and sliding the cover member 30.

[0148] In addition, in this embodiment, the abutting portion 33a formed at the tip of the mounting portion 33 has a shape that is bent so as to be inclined, but this is not limited to this. For example, the abutting portion 33a may be bent at a right angle into an L-shape. Furthermore, the abutting portion 33a may be formed so that the tip is folded back. In this case, the abutting portion 33a has a recessed portion with a cross-sectional shape that is approximately U-shaped or C-shaped.

[0149] A gap, which is a space, may exist between the extension portion 32 of the cover member 30 and the frame 20. Specifically, a gap may exist between the extension portion 32 and the protrusion 20b of the frame 20. Therefore, the extension portion 32 and the protrusion 20b are not in contact with each other. Specifically, even when the LED lighting device 3 is housed in the recess 2a of the fixture body 2, the extension portion 32 and the protrusion 20b are not in contact with each other. However, the extension portion 32 and the protrusion 20b may be in contact with each other.

[0150] Furthermore, there is a gap between the mounting portion 33 of the cover member 30 and the side plate portion 24 of the frame 20. Therefore, the mounting portion 33 and the side plate portion 24 are not in contact with each other. However, the mounting portion 33 and the side plate portion 24 may be in contact with each other.

[0151] The cover member 30 is made of a translucent resin material such as acrylic or polycarbonate, or a translucent material such as glass. In this embodiment, the cover member 30 is made of a translucent resin material. In this case, the cover member 30 may be a milky white cover member with a light diffusing material dispersed therein. Such a cover member 30 may be produced by resin molding a translucent resin material mixed with a light diffusing material into a predetermined shape. Light-reflective fine particles such as silica particles may be used as the light diffusing material.

[0152] The cover member 30 may be configured by forming a milky white light-diffusing film containing a light-diffusing material on the surface (inner or outer surface) of the transparent cover, rather than dispersing a light-diffusing material inside. The cover member 30 may also be configured to have light-diffusing properties by applying a diffusing treatment, rather than using a light-diffusing material. For example, the cover member 30 may be configured to have light-diffusing properties by applying a surface treatment such as a texturing treatment to form minute irregularities on the surface of the transparent cover, or by printing a dot pattern on the surface of the transparent cover. Even when the cover member 30 is subjected to a diffusing treatment, it may further contain a light-diffusing material to enhance light-diffusing properties.

[0153] In this embodiment, the main portion 31, the extension portion 32, and the mounting portion 33 that constitute the cover member 30 are integrally formed. Therefore, the main portion 31, the extension portion 32, and the mounting portion 33 are made of the same material. Note that the main portion 31, the extension portion 32, and the mounting portion 33 all have the same material strength, but this is not limited to this. For example, the material strengths of the main portion 31, the extension portion 32, and the mounting portion 33 may be different. In this case, it is preferable that the material strength of the main portion 31 is greater than the material strength of the extension portion 32 and the material strength of the mounting portion 33. This configuration can prevent deformation of the main portion 31. In other words, the shape of the main portion 31 is stabilized. This can reduce the impact of deformation of the cover member 30 on optical performance.

[0154] Furthermore, the thicknesses of the main portion 31, the extension portion 32, and the mounting portion 33 are not particularly limited, but are, for example, 0.5 mm or more and 5 mm or less. As an example, the thickness of the main portion 31 may be 1 mm or less. Note that the main portion 31, the extension portion 32, and the mounting portion 33 all have the same thickness, but this is not limited to this. For example, the thicknesses of the main portion 31, the extension portion 32, and the mounting portion 33 may be different. In this case, it is preferable that the thickness of the main portion 31 is greater than the thicknesses of the extension portion 32 and the mounting portion 33. This configuration can suppress deformation of the main portion 31. In other words, the shape of the main portion 31 is stabilized. This can reduce the impact of deformation of the cover member 30 on optical performance.

[0155] In the present embodiment, the main portion 31, the extension portion 32, and the mounting portion 33 are made of the same resin material. However, this is not limiting. The main portion 31, the extension portion 32, and the mounting portion 33 may be made of two or more types of materials. In this case, the main portion 31 and the extension portion 32 may be made of different resin materials. For example, the main portion 31 may be made of a translucent resin material, and part or all of the extension portion 32 may be made of a white or milky white resin material. The mounting portion 33 may be made of the same resin material as the main portion 31 or the extension portion 32. Specifically, the main portion 31, the mounting portion 33, the outer extension portion 32a of the extension portion 32, and the second plate portion 32b2 of the inner extension portion 32b of the extension portion 32 may be made of a translucent resin material, and the first plate portion 32b1 and the third plate portion 32b3 of the inner extension portion 32b of the extension portion 32 may be made of a white or milky white resin material. By coloring part or all of the extension portion 32 white or milky white, the extension portion 32 (e.g., the inner extension portion 32b) can be given a reflective function. This allows light emitted from the LEDs 12 that reaches the extension portion 32 to be reflected by the inner extension portion 32b and enter the main portion 31. As a result, the light extraction efficiency of the LED lighting device 3 can be improved. Therefore, the illuminance directly below the LED lighting fixture 1 can be improved, and when multiple LED lighting fixtures 1 are installed, the number of LED lighting fixtures 1 installed can be reduced. Furthermore, by coloring the mounting portion 33 white or milky white, light leakage into the fixture body 2 can be reduced. The cover member 30, which is partially made of a white or milky white resin material, can be formed by two-color molding. The extension portion 32 may also be molded using two layers and two colors. For example, the base layer of the extension portion 32 may be made of the same translucent resin material as the main portion 31, and the surface layer of the extension portion 32 (a layer laminated on the base layer) may be made of a white or milky white resin material.

[0156] The cover member 30 has both longitudinal ends closed. In the present embodiment, both longitudinal ends of the cover member 30 are closed by end caps 40. Specifically, a long cylindrical body is formed by fixing the cover member 30 and the frame 20, and end caps 40 are attached to both longitudinal ends of the cylindrical body. A spatial region S2 is formed between the cover member 30 and the frame 20. This spatial region S2 is an area (insect-proof area) configured to prevent the intrusion of foreign objects such as insects and dust, and is an area surrounded by the main portion 31 of the cover member 30 and the main plate portion 21 of the frame 20. Specifically, the spatial region S2 is an area enclosed by the main portion 31 and extension portion 32 of the cover member 30, the main plate portion 21 of the frame 20, and the end caps 40. The light source unit 10 is disposed in this spatial region S2.

[0157] The end cap 40 is a component that prevents foreign objects such as insects and dust from entering the interior of the cylindrical body formed by the cover member 30 and the frame 20. The end cap 40 is provided to close the open end of the cylindrical body formed by the frame 20 and the cover member 30. In other words, the end cap 40 is attached to the cylindrical body formed by the frame 20 and the cover member 30 so as to cover the open end of the cylindrical body, thereby closing the open end of the cylindrical body. This makes it possible to prevent foreign objects such as insects and dust from entering the interior of the cylindrical body formed by the frame 20 and the cover member 30. In other words, it is possible to prevent foreign objects such as insects and dust from entering the spatial region S2.

[0158] 5 to 11, the end caps 40 are cover ends provided at the longitudinal ends of the cover member 30. The end caps 40 are provided at both longitudinal ends of the cover member 30. The end caps 40 are connected directly or indirectly to the longitudinal ends of the cover member 30.

[0159] As shown in FIG. 9, the end cap 40 provided at one longitudinal end of the cover member 30 is a first end cap 40a, and the end cap 40 provided at the other longitudinal end of the cover member 30 is a second end cap 40b. In this embodiment, the first end cap 40a and the second end cap 40b are the same component. That is, the shape of the second end cap 40b is the same as the shape of the first end cap 40a. This allows for cost reduction. The first end cap 40a and the second end cap 40b are arranged in opposite directions in the longitudinal direction (Y-axis direction) of the cover member 30.

[0160] Additionally, an elastic member 50 is attached to the end cap 40. The detailed configurations of the end cap 40 and the elastic member 50 will be described later.

[0161] 3 and 4, a spatial region S3 is formed on the ceiling side of the frame 20. That is, the spatial region S3 exists between the fixture body 2 and the frame 20. The spatial region S3 also occupies part or all of the recess 2a of the fixture body 2.

[0162] The power supply device 4 is disposed in this spatial region S3. That is, the power supply device 4 is disposed on the ceiling side of the frame 20. In this embodiment, the center position of the power supply device 4 is shifted from the center position in the short-side direction of the LED lighting device 3, and the power supply device 4 is disposed in the spatial region S3, biased toward the short-side direction of the LED lighting device 3 (the short-side direction of the frame 20). Specifically, the power supply device 4 is biased toward the metal hook 5 side (the left side in FIG. 4). In addition, the side plate portion 24 of the frame 20 is shortened, and the circuit board 4a of the power supply device 4 is located closer to the ceiling side than the tip of the side plate portion 24 of the frame 20 within the circuit case 4c.

[0163] Electrical wires used in the LED lighting device 3 may be arranged in the spatial region S3 between the fixture body 2 and the frame 20. The electrical wires used in the LED lighting device 3 include construction electrical wires (construction wiring) that are wired when the LED lighting fixture 1 is installed on a ceiling or the like, and internal electrical wires (internal wiring) that are wired in a factory when the LED lighting device 3 is manufactured.

[0164] Examples of construction wires include power lines such as VVF cables and signal lines such as dimming signal lines. Construction wires such as power lines and signal lines are drawn out from the ceiling, for example, and connected to predetermined locations on the LED lighting fixture 1 when the LED lighting fixture 1 is installed. For example, a power line such as a VVF cable is connected to a power terminal block 8, and a dimming signal line is connected to a dimming terminal block 9. Examples of internal fixture wires arranged in the space region S3 include the internal fixture wires described above. Furthermore, functional components such as the above-mentioned function expansion module may be stored in the space region S3.

[0165] Since a lead wiring may be installed inside the LED lighting fixture 1, it is desirable that there is space for at least one power line such as a VVF cable to pass through in the spatial region S3 between the LED lighting device 3 and the recess 2a of the fixture body 2. The lead wiring may be held (temporarily held or arranged) on the fixture body 2 side, or may be held (temporarily held or arranged) on the LED lighting device 3 side.

[0166] As an example, FIG. 4 shows an example in which a VVF cable 71 and a signal line 72 are arranged as construction wires in the spatial region S3. In this embodiment, the power supply device 4 is arranged unevenly in the spatial region S3, so that the ceiling side of one of the pair of horizontal plate portions 23 of the frame 20 (the right horizontal plate portion 23 in FIG. 4) is open. As a result, as shown in FIG. 4, in the region in the spatial region S3 where the power supply device 4 is located, one side in the short direction of the LED lighting device 3 is larger than the other side. In other words, one of the two sides of the power supply device 4 in the spatial region S3 is a wide region, and the other side of the two sides of the power supply device 4 in the spatial region S3 is a narrow region. Therefore, it is preferable to arrange the construction wires in the wider of the two regions on either side of the power supply device 4. In particular, in this embodiment, the length (height) of the side plate portions 24 of the frame 20 is short, so that the vertical space around the side plate portions 24 in the spatial region S3 can be further expanded. Therefore, the construction wires can be arranged by effectively utilizing this expanded spatial region S3. For example, the construction wires can be arranged close to the ceiling end of the spatial region S3 on the fixture body 2 side. In this way, the construction wires can be arranged by effectively utilizing the expanded spatial region S3, which prevents the LED lighting device 3 from being lifted due to interference from the construction wires, thereby preventing a gap from being created between the fixture body 2 and the LED lighting device 3.

[0167] Furthermore, the construction wires may be arranged separately in a wide area and a narrow area in the spatial area S3. In this case, the VVF cable 71, which is a relatively thick wire, may be arranged in the wide area of ​​the two areas on either side of the power supply device 4, and the signal wire 72, which is a relatively thin wire, may be arranged in the narrow area of ​​the two areas on either side of the power supply device 4.

[0168] The power supply devices 4 do not have to be arranged unevenly in the width direction of the frame 20, but may be arranged in the center of the width direction of the frame 20. In this case, the construction wires and the internal wires of the fixture may be arranged on both sides of the power supply devices 4. In other words, wiring insertion portions may be provided on both sides of the power supply devices 4.

[0169] Furthermore, functional components such as a function expansion module may be disposed in the spatial region S3. In this case, the function expansion module may be provided in the LED lighting device 3 (for example, at an end of the power supply device 4), or may be attached to the fixture body 2 at a distance from the LED lighting device 3. Furthermore, the function expansion module may not be pre-installed in the LED lighting fixture 1, but may be able to be retrofitted by an installer, or may be interchangeable so that it can be replaced with a different function.

[0170] 3 and 4, in the LED lighting device 3 according to this embodiment, a spatial region is formed on the ceiling side of the protrusion 20b formed on the frame 20. This spatial region can also be used to store components such as functional components or internal electric wires. Note that the use of this spatial region is not limited to storing components such as functional components or internal electric wires, and this spatial region can also be used for centering metal fittings, positioning metal fittings, guiding metal fittings, earthing, etc.

[0171] The LED lighting device 3 configured as described above is housed in the recess 2a of the fixture body 2 and attached to the fixture body 2. Specifically, the LED lighting device 3 is attached to the fixture body 2 using a hook 5 and an elastic holding member 6 shown in Figures 3, 6 and 7. The hook 5 and the elastic holding member 6 are fixed to the frame 20.

[0172] As shown in FIG. 3, the hook fitting 5 is arranged on the ceiling side of the frame 20. The hook fitting 5 is a plate member made of sheet metal. The hook fitting 5 is fixed to the end of the frame 20. As an example, the hook fitting 5 is fixed to the frame 20 with a fixing member such as a screw, and extends so as to protrude outward from the frame 20. The hook fitting 5 is hooked onto the fixture main body 2. In this embodiment, a slit 2c (see FIG. 2) is provided on the inner wall surface of the recess 2a of the fixture main body 2, and the hook fitting 5 is hooked onto this slit 2c.

[0173] The elastic holding member 6 is a component for attaching the LED lighting device 3 to the fixture body 2. In this embodiment, the elastic holding member 6 is, for example, a spring such as a kick spring, and the LED lighting device 3 is pulled up toward the fixture body 2 by the elastic force of the elastic holding member 6. The elastic holding member 6 is attached to the ceiling side (rear surface) of the main board portion 21 of the frame 20. Specifically, the elastic holding member 6 is fixed to an end portion of the frame 20 in the width direction. In this embodiment, the elastic holding member 6 is fixed to the frame 20 on the opposite side from the hook metal fitting 5 in the width direction. In this case, the elastic holding member 6 is fixed to the frame 20 by a fixing member such as a screw. Specifically, the elastic holding member 6 is fixed to a holding metal fitting 6c (see FIG. 7 ) fixed to the frame 20 by an attachment screw. The elastic holding member 6 is detachably attached to the fixture body 2. In this embodiment, the elastic holding member 6 is detachably engaged with a receiving metal fitting 7 fixed to the fixture body 2.

[0174] 2, two hooks 5 and two elastic holding members 6 are provided at each end of the frame 20 in the longitudinal direction, but this is not limited to this. Also, the hooks 5 and the elastic holding members 6 are provided at positions facing each other in the lateral direction of the frame 20, but this is not limited to this.

[0175] Next, a method for attaching the LED lighting device 3 to the fixture body 2 will be described with reference to Fig. 12. Fig. 12 is a diagram for explaining a method for attaching the LED lighting device 3 to the fixture body 2 in the LED lighting fixture 1 according to the embodiment.

[0176] When attaching the LED lighting device 3 to the fixture body 2 installed on the ceiling 100, first, as shown in Figure 12 (a), the hooking bracket 5 is hooked into the slit 2c (see Figure 2) provided in the fixture body 2 to hang the LED lighting device 3 in a cantilevered state, and the power supply unit 4 is connected to the power line drawn from the ceiling, and one end of the elastic holding member 6, which is a kick spring, is engaged with the receiving bracket 7 fixed to the fixture body 2.

[0177] Next, as shown in (b) of Figure 12, the hook fitting 5 is pushed deep into the slit 2c while the LED lighting device 3 is rotated around the hook fitting 5 as a fulcrum, thereby pushing the LED lighting device 3 up into the recess 2a of the fixture body 2.

[0178] In this embodiment, the power supply device 4 is disposed offset to one side in the width direction of the frame 20. Specifically, the power supply device 4 is disposed closer to the rotation axis when rotating the LED lighting device 3. By disposing the heavy power supply device 4 closer to the rotation axis in this way, the LED lighting device 3 can be rotated with a small force.

[0179] Then, by rotating the LED lighting device 3 and pushing it into the recess 2a of the fixture body 2, the LED lighting device 3 can be fitted into the recess 2a of the fixture body 2, as shown in (c) of Figure 12. At this time, the LED lighting device 3 is pulled up by the elastic force of the elastic holding member 6 (kick spring), so that the outer extension portion 32a of the extension portion 32 abuts against the opening edge 2a1 of the recess 2a of the fixture body 2. This allows the LED lighting device 3 to be attached to the fixture body 2.

[0180] When removing the LED lighting device 3 from the fixture body 2, the LED lighting device 3 can be removed from the fixture body 2 by performing the above-described operations in reverse. For example, the LED lighting device 3 can be removed from the fixture body 2 by rotating it while pulling it down.

[0181] Here, a manufacturing method of the LED lighting device 3 (light bar) according to the embodiment will be described with reference to Fig. 13. In particular, the description will focus on the process of attaching the cover member 30 to the frame 20 when assembling the LED lighting device 3. Fig. 13 is a diagram for explaining the state when attaching the cover member 30 to the frame 20 in the manufacturing method of the LED lighting device 3 according to the embodiment. In Fig. 13, the solid line portion indicates the state after the cover member 30 has been attached to the frame 20, and the dashed line portion indicates the positions of the extension portion 32 and the attachment portion 33 on the cover member 30 before the cover member 30 is attached to the frame 20.

[0182] When assembling the LED lighting device 3, first, the light source unit 10 is fixed to the frame 20 (light source unit fixing step). For example, the board 11 on which the LEDs 12 are mounted is locked to the main board 21 of the frame 20 by engaging with the tabs 21a formed on the main board 21. This allows the light source unit 10 to be fixed to the frame 20.

[0183] Thereafter, the cover member 30 is attached to the frame 20 to which the light source unit 10 is fixed (cover member attaching step). In this embodiment, the cover member 30 is attached to the frame 20 by fitting the attachment portions 33 of the cover member 30 into the side plate portions 24 of the frame 20 from the width direction of the cover member 30. Specifically, one attachment portion 33 of the cover member 30 is engaged with one of the side plate portions 24 of the frame 20, and the cover member 30 is rotated around this engaged portion as a fulcrum, so that the other attachment portion 33 of the cover member 30 is fitted into the other side plate portion 24 of the frame 20. In this way, the cover member 30 can be fitted into the frame 20.

[0184] In this step, a part of the extension portion 32 of the cover member 30 is pressed against and brought into contact with the frame 20. In this embodiment, the tip surface of the third plate portion 32b3 of the extension portion 32 is pressed against the surface of the main plate portion 21 of the frame 20.

[0185] 13, the attitude of the extension portion 32 relative to the frame 20 is different before and after the cover member 30 is attached to the frame 20. Specifically, when the position of the main portion 31 is aligned before and after the cover member 30 is attached to the frame 20, the position of the third plate portion 32b3 (contact portion 32c) of the extension portion 32 before the cover member 30 is attached to the frame 20 is closer to the ceiling than the position of the third plate portion 32b3 (contact portion 32c) after the cover member 30 is attached to the frame 20. As a result, when the cover member 30 is attached to the frame 20, the extension portion 32 deforms around the connecting point between the outer extension portion 32a and the inner extension portion 32b or the connecting point between the outer extension portion 32a and the main portion 31 as a fulcrum, and the third plate portion 32b3, which is the tip end of the extension portion 32, abuts against the main plate portion 21. Specifically, the tip end surface of the third plate portion 32b3 of the extension portion 32 is pressed against the surface of the main plate portion 21. At this time, the extension portion 32 is pushed back and elastically deformed. In other words, the extension portion 32 is bent. As a result, the third plate portion 32b3 of the extension portion 32 becomes the abutment portion 32c and abuts against the main plate portion 21 of the frame 20 while being pressed against it.

[0186] In this manner, the LED lighting device 3 can be manufactured. When the LED lighting device 3 is subsequently attached to the fixture body 2 installed on the ceiling or the like, the installation can be carried out by the method shown in Fig. 12 as described above.

[0187] 13, before the cover member 30 is attached to the frame 20, the attachment portions 33 are inclined with respect to the side plate portions 24 of the frame 20. However, this is not limited to this. Specifically, as shown by the dashed line in FIG. 14, the attachment portions 33 may be parallel to the side plate portions 24 of the frame 20 before the cover member 30 is attached to the frame 20. As a result, after the cover member 30 is attached to the frame 20, the attachment portions 33 are elastically deformed and inclined with respect to the side plate portions 24 of the frame 20. Note that in FIG. 14 as well, as in FIG. 13, the solid lines indicate the state after the cover member 30 has been attached to the frame 20, and the dashed lines indicate the positions of the extension portions 32 and the attachment portions 33 on the cover member 30 before the cover member 30 is attached to the frame 20.

[0188] In this way, by fitting the cover member 30 into the frame 20 from the width direction, the mounting portions 33 of the cover member 30 are inclined so that their tips move toward the side plate portions 24 of the frame 20, and the mounting portions 33 come into contact with the side plate portions 24 of the frame 20. As a result, the side plate portions 24 of the frame 20 are pressed by the mounting portions 33, and the mounting portions 33 and the side plate portions 24 can be firmly locked together. This prevents the cover member 30 from coming off the frame 20.

[0189] 13 and 14, the mounting portion 33 has a different attitude relative to the frame 20 before and after the cover member 30 is attached, but this is not limited to this. That is, the mounting portion 33 does not need to change its attitude relative to the frame 20 before and after the cover member 30 is attached. That is, the mounting portion 33 does not need to be elastically deformed.

[0190] Furthermore, in order to control the elastic deformation of the extension portion 32 and the attachment portion 33, a notched constriction may be formed in a portion of the cover member 30. That is, by forming a constriction in a portion of the cover member 30, the strength at the constriction can be weakened, thereby making the extension portion 32 and the attachment portion 33 more flexible. In this case, it is desirable to minimize the effect of the constriction on the main portion 31. For example, a notched constriction may be formed on the surface of the cover member 30 facing the main portion 31 at the connecting portion between the extension portion 32 and the attachment portion 33 (the connecting portion between the outer extension portion 32a and the inner extension portion 32b). Forming a constriction in this portion makes it possible to make the extension portion 32 and the attachment portion 33 more flexible while reducing the effect on the main portion 31.

[0191] As described above, in the LED lighting device 3 according to this embodiment, the contact portion 32c of the extension portion 32 of the cover member 30 is in contact with and pressed against the main plate portion 21 of the frame 20. This configuration provides the following effects.

[0192] If the abutting portion 32c of the extension portion 32 of the cover member 30 is not pressed against the main plate portion 21 of the frame 20, a gap may be formed between the tip of the extension portion 32 of the cover member 30 and the main plate portion 21 of the frame 20 due to dimensional variations in the cover member 30 and / or the frame 20. As a result, foreign matter such as insects or dust may enter the spatial region S2 through this gap. Furthermore, if the abutting portion 32c of the extension portion 32 of the cover member 30 is not pressed against the main plate portion 21 of the frame 20, when the cover member 30 is fitted into the frame 20 from the width direction, the tip of the extension portion 32 may deform in a direction away from the frame 20, causing a gap to be formed between the tip of the extension portion 32 of the cover member 30 and the main plate portion 21 of the frame 20. As a result, foreign matter such as insects or dust may enter the spatial region S2 through this gap.

[0193] In contrast, in the LED lighting device 3 according to this embodiment, the third plate portion 32b3, which is the tip end of the extension portion 32, serves as the abutting portion 32c and is pressed against the main plate portion 21 of the frame 20. This prevents the abutting portion 32c of the extension portion 32 of the cover member 30 from separating from the main plate portion 21 of the frame 20, thereby preventing a gap from forming between the tip end of the extension portion 32 and the frame 20 even if dimensional variations occur in the cover member 30 and / or the frame 20. In other words, the dimensional variations in the cover member 30 and / or the frame 20 can be absorbed. In this way, in the LED lighting device 3 according to this embodiment, no gap is formed between the tip end of the extension portion 32 of the cover member 30 and the main plate portion 21 of the frame 20, preventing foreign matter such as insects and dust from entering the spatial region S2. In other words, the extension portion 32 abutting against the main plate portion 21 of the frame 20 functions as an insect-proof structure.

[0194] In particular, since the cover member 30 and the frame 20 are long, exceeding two feet, warping, undulation, twisting, and the like are likely to occur in the frame 20 and / or the cover member 30. In particular, some LED lighting devices 3 are eight feet long, and when the cover member 30 and the frame 20 are eight feet long, warping and the like are even more likely to occur in the frame 20 and / or the cover member 30. For this reason, in conventional LED lighting devices, gaps are likely to occur between part of the tip of the extension portion 32 and the frame 20 in the longitudinal direction of the cover member 30, and it may be impossible to maintain the linearity of the area of ​​the cover member 30 that the extension portion 32 is intended to contact along the longitudinal direction.

[0195] In contrast to this, in the LED lighting device 3 according to this embodiment, the third plate portion 32b3, which is the tip end of the extension portion 32, serves as the abutment portion 32c and is pressed against the main plate portion 21 of the frame 20. This makes it possible to prevent a gap from being generated between the tip end of the extension portion 32 and the frame 20 over the entire length of the cover member 30 in the longitudinal direction.

[0196] Furthermore, when attaching the LED lighting device 3 to the fixture body 2 or when cleaning or replacing the LED lighting device 3, the LED lighting device 3 may be twisted or the main portion 31 of the cover member 30 may be pressed, which may apply stress to the LED lighting device 3 and cause the pair of extension portions 32 to deform in an opening direction. In other words, the extension portions 32 may be deformed in a direction in which their tips move away from the frame 20. In this case, if foreign matter such as insects or dust has accumulated in the space region between the extension portions 32 and the frame 20 (corresponding to the space region S1 in this embodiment), the foreign matter may fall and enter the space region S2 (insect-proof region) between the cover member 30 and the frame 20.

[0197] In contrast to this, in the LED lighting device 3 according to this embodiment, the third plate portion 32b3, which is the tip end of the extension portion 32, serves as the abutment portion 32c and is pressed against the main plate portion 21 of the frame 20. As a result, even if stress is applied to the LED lighting device 3, no gap is created between the tip end of the extension portion 32 and the frame 20. As a result, even if foreign matter such as insects or dust accumulates in the space region S1 between the extension portion 32 and the frame 20, the foreign matter can be prevented from falling and entering the space region S2 (insect-proof region) between the cover member 30 and the frame 20.

[0198] As described above, in the LED lighting device 3 according to this embodiment, the tip of the extension portion 32 of the cover member 30 can be kept in contact with the frame 20, thereby preventing foreign matter such as insects and dust from entering the spatial region S2 (insect-proof region) between the cover member 30 and the frame 20. Furthermore, the contact between the tip of the extension portion 32 of the cover member 30 and the main plate portion 21 of the frame 20 can increase the light extraction efficiency of the LED lighting device 3 toward the floor side.

[0199] Furthermore, in the LED lighting device 3 according to this embodiment, the third plate portion 32b3 (contact portion 32c) which is the tip end of the extension portion 32 contacts the surface of the main plate portion 21 which is a flat surface.

[0200] This increases the contact area between the tip of the extension portion 32 and the main plate portion 21 of the frame 20, thereby further preventing foreign objects such as insects and dust from entering the space area S2 between the cover member 30 and the frame 20.

[0201] In the LED lighting device 3 according to this embodiment, the extension portion 32 has an outer extension portion 32a.

[0202] With this configuration, when the LED lighting device 3 is lifted by the elastic retaining member 6 (kick spring) to store the LED lighting device 3 in the fixture body 2, a force pressing the extension portion 32 toward the ceiling acts, causing the outer extension portion 32a of the extension portion 32 to abut against the opening edge 2a1 of the recessed portion 2a of the fixture body 2. This further presses the inner extension portion 32b of the extension portion 32 against the frame 20, increasing the force with which the extension portion 32 presses against the main plate portion 21 of the frame 20. This improves the degree of adhesion between the extension portion 32 and the main plate portion 21. This further prevents foreign objects such as insects and dust from entering the space region S2 between the cover member 30 and the frame 20. In other words, the insect-proofing effect is enhanced. Furthermore, when the LED lighting device 3 is lifted by the elastic retaining member 6, the outer extension portion 32a of the extension portion 32 and the opening edge 2a1 of the recessed portion 2a of the fixture body 2 are brought into close contact with each other.

[0203] In the present embodiment, the third plate portion 32b3 of the extension portion 32 of the cover member 30 abuts against the main plate portion 21 of the frame 20 in a pressed state, but this is not limited to this. Specifically, as shown in FIG. 15 , the third plate portion 32b3 of the extension portion 32 of the cover member 30 may abut against the light source unit 10 in a pressed state. That is, it is sufficient that the third plate portion 32b3 (abutment portion 32c) of the extension portion 32 abuts against at least one of the frame 20 and the light source unit 10 in a pressed state. In FIG. 15 , the third plate portion 32b3 (abutment portion 32c) of the extension portion 32 abuts against the surface of the substrate 11 of the light source unit 10.

[0204] In this way, the third plate portion 32b3, which is the tip end of the extension portion 32, serves as the abutment portion 32c and is pressed against the light source unit 10, thereby preventing a gap from being generated between the tip end of the extension portion 32 and the light source unit 10. Specifically, it is possible to prevent a gap from being generated between the tip end of the extension portion 32 and the substrate 11. This allows the tip end of the extension portion 32 and the light source unit 10 to remain in contact with each other, thereby preventing foreign matter such as insects and dust from entering the spatial region S2 between the cover member 30 and the frame 20.

[0205] Furthermore, by pressing the tip of the extension portion 32 against the light source unit 10, the extension portion 32 can prevent the light source unit 10 from coming off and can effectively dissipate heat generated by the light source unit 10. Furthermore, by positioning the extension portion 32 close to the substrate 11 of the light source unit 10, the light extraction efficiency can be improved. This increases the luminous flux of the illumination light emitted from the LED lighting device toward the floor, thereby improving the illuminance directly below the LED lighting fixture. Therefore, when installing multiple LED lighting fixtures, the number of installed LED lighting fixtures can be reduced.

[0206] Here, the configurations of the end cap 40 and the elastic member 50 in the LED lighting device 3 according to this embodiment will be described in more detail with reference to FIGS. 1 to 10 and FIGS. 16 to 20. FIG. 16 is a perspective view of the end cap 40 according to this embodiment, as viewed from the outer surface 41b. FIG. 17 is a perspective view of the end cap 40 according to this embodiment, as viewed from the inner surface 41a. In FIG. 16, (b) shows a perspective view of a half cross section of the end cap 40. FIG. 18 is a cross-sectional view of the LED lighting device 1 according to this embodiment. FIG. 19 is an enlarged view of an area IXX surrounded by a dashed line in FIG. 18. In FIGS. 18 and 19, the end cap 40 as seen in the depth direction is also shown. FIG. 20 is an exploded perspective view of the portion shown in FIG. 19.

[0207] As shown in Figures 5 and 16 to 20, the end cap 40 has a main portion 41, a fitting portion 42 for fitting the cover member 30, an inner protrusion 43 that protrudes inward from the main portion 41, and an outer protrusion 44 that protrudes outward from the main portion 41.

[0208] The main portion 41 is a cap main body that serves as the main body of the end cap 40, and primarily functions to cover the open end of a cylinder formed by the cover member 30 and the frame 20. In this embodiment, all or a part of the plate-shaped main portion 41 is translucent. As such, the translucency of the main portion 41 allows light from the light source unit 10 to pass through. In other words, light emitted from the LEDs 12 of the light source unit 10 passes through the main portion 41 and is extracted to the outside of the end cap 40.

[0209] Specifically, the entire end cap 40 is translucent. Therefore, the entire main portion 41 and the entire fitting portion 42 are translucent. The translucent end cap 40 may be transparent or may have diffusive properties. By using an end cap 40 that is translucent and diffusive, the light from the LED 12 that enters the end cap 40 is diffused (scattered) by the end cap 40 and passes through the end cap 40.

[0210] The end cap 40 is made of a translucent material such as a translucent resin material, such as acrylic or polycarbonate, or a translucent material such as a glass material. In this embodiment, the end cap 40 is made of a translucent resin material. In this case, the end cap 40 can be a diffusing member having a light diffusing material dispersed therein. Such an end cap 40 can be produced by resin molding a translucent resin material mixed with a light diffusing material into a predetermined shape. Light-reflecting fine particles such as silica particles can be used as the light diffusing material.

[0211] The translucent and diffusive end cap 40 may be constructed by forming a milky white light-diffusing film containing a light-diffusing material on the surface (inner or outer surface) of a transparent end cap, rather than dispersing a light-diffusing material inside. The end cap 40 may also be configured to have light-diffusive properties by diffusing the material rather than using a light-diffusing material. For example, the end cap 40 may be configured to have light-diffusive properties by applying a surface treatment such as a graining process to form minute irregularities on the surface of the transparent end cap, or by printing a dot pattern on the surface of the transparent end cap. Even when the end cap 40 is subjected to a diffusive process, it may further contain a light-diffusive material to enhance light-diffusive properties.

[0212] The end cap 40 may be made of the same material as the cover member 30 or may be made of a different material from the cover member 30.

[0213] Furthermore, the main portion 41 does not have to be light-transmitting. In this case, the entire end cap 40 does not have to be light-transmitting. For example, an example of a light-opaque end cap 40 is one that has light-blocking (light-absorbing) or light-reflecting properties. In this case, the end cap 40 is made of, for example, a white, black, or colored resin material. Furthermore, the end cap 40 may have a light-transmitting portion and a light-opaque portion.

[0214] The shape of the main portion 41 in a front view is, for example, a flattened kamaboko shape as a whole. Therefore, the outer shape of one side of the main portion 41 in the Z-axis direction is a curved shape that is curved in an arc shape so as to follow the shape of the cover member 30. The thickness of the plate-shaped main portion 41 is constant. As an example, the thickness of the main portion 41 is 1 mm to 5 mm, but is not limited to this. Note that the thickness of the main portion 41 is constant over the entire area of ​​the main portion 41, but is not limited to this.

[0215] Moreover, the shape of the main portion 41 in a front view is, for example, a shape obtained by flattening a semicircle as a whole. Therefore, the outer shape of one side of the main portion 41 in the Z-axis direction is a curved shape that is curved like an arc so as to follow the shape of the cover member 30. In this embodiment, the end cap 40 is D-shaped as a whole when viewed from the longitudinal direction of the LED lighting device 3. Specifically, the main portion 41 is D-shaped as a whole when viewed from the longitudinal direction of the LED lighting device 3. Furthermore, as described above, the side shape of the LED lighting device 1 made up of the LED lighting device 3 and the fixture main body 2 is also D-shaped as a whole, and the boundary between the LED lighting device 3 and the fixture main body 2 is not noticeable.

[0216] The main portion 41 has an inner surface 41a and an outer surface 41b as surfaces in the thickness direction of the main portion 41. The inner surface 41a is the surface on the light source unit 10 side (LED 12 side), and the outer surface 41b is the surface on the opposite side from the light source unit 10 side (LED 12 side). The outer surface 41b is an exposed surface that can be seen by a user. As described above, in this embodiment, the entire main portion 41 is translucent, so that light emitted from the LED 12 and incident on the main portion 41 passes through the entire main portion 41. Therefore, the inner surface 41a of the main portion 41 serves as a light incident surface onto which light from the LED 12 enters, and the outer surface 41b of the main portion 41 serves as a light emitting surface from which light from the LED 12 exits to the outside.

[0217] The main portion 41 is curved concavely as a whole, recessed inward. As an example, the inner surface 41a and the outer surface 41b of the main portion 41 are parabolic. That is, the inner surface 41a and the outer surface 41b are curved in each of the X-axis direction and the Z-axis direction. In this embodiment, the main portion 41 is inclined as a whole so that the upper portion (ceiling side portion) is recessed inward more than the lower portion (floor side portion) in the height direction, which is the Z-axis direction, and has an overall curved shape so that the central portion is recessed inward more than the peripheral portions in the width direction, which is the X-axis direction.

[0218] The main portion 31 of the cover member 30 is attached to the inner surface 41a of the main portion 41. Therefore, the inner surface 41a of the main portion 41 includes an attachment surface 41c, which is the surface to which the cover member 30 is attached. In this embodiment, the attachment surface 41c is the surface to which the main portion 31 of the cover member 30 is attached. Specifically, the longitudinal end of the main portion 31 of the cover member 30 is attached to the attachment surface 41c. Therefore, the end face of the longitudinal end of the main portion 31 of the cover member 30 abuts against the attachment surface 41c. The attachment surface 41c and the longitudinal end of the main portion 31 of the cover member 30 are fixed with an adhesive. Therefore, an adhesive may be present between the attachment surface 41c and the end face of the longitudinal end of the main portion 31 of the cover member 30. In this manner, the attachment surface 41c is a connection surface to which the longitudinal end of the main portion 31 of the cover member 30 is directly or indirectly connected. In addition, the mounting surface 41c includes not only the surface against which the longitudinal end of the main portion 31 of the cover member 30 abuts, but also the same plane as the surface against which the longitudinal end of the main portion 31 of the cover member 30 abuts.

[0219] The fitting portion 42 is a structure for fitting the longitudinal end of the main portion 31 of the cover member 30. The fitting portion 42 is provided on the main portion 41. Specifically, the fitting portion 42 is provided on the floor-side end of the main portion 41. The fitting portion 42 is a protruding portion that protrudes from the inner surface 41a of the main portion 41. The fitting portion 42 is provided on the floor-side end of the main portion 41 (the side opposite to the appliance body 2). Specifically, the fitting portion 42 is formed on a curved portion of the outer periphery of the main portion 41. In other words, the fitting portion 42 is formed in a portion corresponding to the main portion 31 of the cover member 30. In this embodiment, the fitting portion 42 is a convex wall portion that stands on the inner surface 41a of the main portion 41 and is formed to extend in a curved shape according to the shape of the edge of the curved portion of the main portion 41. The fitting portion 42 is formed integrally with the main portion 41.

[0220] In the curved portion on the outer periphery of the main portion 41, the area between the fitting portion 42 and the edge of the main portion 41 forms the mounting surface 41c. In other words, the mounting surface 41c includes the area between the fitting portion 42 and the outer periphery edge of the main portion 41. The longitudinal end of the main portion 31 of the cover member 30 is fitted into the fitting portion 42 by abutting against the wall surface of the fitting portion 42 and the mounting surface 41c.

[0221] The longitudinal end of the main portion 31 of the cover member 30 does not have to be in contact with the fitting portion 42. For example, a ring-shaped packing member may be disposed between the fitting portion 42 and the longitudinal end of the main portion 31 of the cover member 30 so as to surround the fitting portion 42. In this case, the packing member is inserted between the outer peripheral end of the inner surface 41a of the main portion 41 of the end cap 40 and the end face of the longitudinal end of the main portion 31 of the cover member 30.

[0222] The fitting portion 42 has a first continuous portion 42a and a second continuous portion 42c that are formed continuously along the shape of the outer peripheral edge of the curved portion of the main portion 41, and a discontinuous portion 42b that is not formed continuously along the shape of the outer peripheral edge of the curved portion of the main portion 41.

[0223] The first continuous portion 42a is located on the apex side of the curved portion of the end cap 40, and the second continuous portion 42c is located on the base side of the curved portion of the end cap 40. In other words, the second continuous portion 42c is located on the side of the end edge 46, which is the end portion located outermost of the end cap 40. The length of the first continuous portion 42a is longer than the length of the second continuous portion 42c.

[0224] The discontinuous portion 42b is located between the first continuous portion 42a and the second continuous portion 42c. In this embodiment, the discontinuous portion 42b is connected to the first continuous portion 42a and the second continuous portion 42c. The discontinuous portion 42b has a shape in which a part of the fitting portion 42 is recessed in a direction away from the outer peripheral edge of the main portion (toward the main plate portion 21). Specifically, the discontinuous portion 42b is recessed so as to be bent in an L shape.

[0225] The height of the protrusions that make up the discontinuous portion 42b and the height of the protrusions that make up the first continuous portion 42a may be the same or different. For example, the height of the protrusions that make up the discontinuous portion 42b may be lower than the height of the protrusions that make up the first continuous portion 42a.

[0226] Furthermore, a recess 41c1 is formed in the mounting surface 41c adjacent to the discontinuous portion 42b. The recess 41c1 is located between the first continuous portion 42a and the second continuous portion 42c, and is formed along the opening of the fitting portion 42 that is recessed by forming the discontinuous portion 42b. The recess 41c1 is a bottomed hole that is recessed in part of the mounting surface 41c. In this embodiment, the recess 41c1 is formed in an elongated shape that follows the shape of the outer peripheral edge of the main portion 41.

[0227] The inner protrusion 43 is a protrusion that protrudes from the inner surface 41a of the main portion 41 (cap body). The inner protrusion 43 protrudes inward in the longitudinal direction of the cover member 30 (Y-axis direction).

[0228] The inner protrusion 43 is composed of a plurality of protrusion pieces. In the present embodiment, the end cap 40 has the inner protrusion 43 including a first protrusion piece 43a, a second protrusion piece 43b, a third protrusion piece 43c, and a fourth protrusion piece 43d. The inner protrusion 43 is formed integrally with the main portion 41. Specifically, the first protrusion piece 43a, the second protrusion piece 43b, the third protrusion piece 43c, and the fourth protrusion piece 43d are all formed integrally with the main portion 41.

[0229] The first protruding piece 43a is a main plate-facing protruding piece that faces the main plate 21 of the frame 20. Specifically, when the LED lighting device 3 is attached to the fixture body 2 installed on the ceiling, the first protruding piece 43a faces the main plate 21 of the frame 20 in the vertical direction (Z-axis direction). Furthermore, the first protruding piece 43a extends along the main surface of the main plate 21. Specifically, the first protruding piece 43a extends linearly along the width direction (X-axis direction) of the main plate 21. There is a gap between the first protruding piece 43a and the main plate 21.

[0230] The first protruding piece 43a is provided at the end of the main part 41 on the ceiling side (the fixture body 2 side). Specifically, the first protruding piece 43a is provided on a linear portion of the outer periphery of the main part 41.

[0231] The first protruding piece 43a is provided between the pair of extending portions 32 of the cover member 30. Specifically, the first protruding piece 43a is located between the third plate portion 32b3 of one of the pair of extending portions 32 and the third plate portion 32b3 of the other extending portion 32. A gap exists between the first protruding piece 43a and the pair of third plate portions 32b3, and the first protruding piece 43a and the pair of third plate portions 32b3 are not in contact with each other. Note that the first protruding piece 43a and the pair of third plate portions 32b3 may be in contact with each other.

[0232] The first protruding piece 43a, which overlaps with the main plate portion 21 in the Z-axis direction, functions as an overlap between the end cap 40 and the frame 20. In other words, when the LED lighting device 3 is turned on, the end cap 40, which is fixed to the end of the cover member 30, moves in the Y-axis direction due to the difference in thermal expansion between the frame 20 and the cover member 30. However, by providing the first protruding piece 43a on the end cap 40, which overlaps with the main plate portion 21 of the frame 20, the difference in thermal expansion between the frame 20 and the cover member 30 can be absorbed. In other words, even if the cover member 30 and the frame 20 thermally expand when the LED lighting device 3 is turned on, the end cap 40 and the frame 20 remain overlapped in the Z-axis direction. Furthermore, by providing the first protruding piece 43a, even if the frame 20 shifts from its predetermined position and becomes displaced, the end cap 40 and the frame 20 overlap in the Z-axis direction. This prevents a gap from being formed between the end cap 40 and the frame 20 in the Z-axis direction, thereby preventing foreign objects such as insects and dust from entering through the gap.

[0233] Furthermore, considering that the cover member 30 and the end cap 40 thermally expand when the LED lighting device 3 is turned on, it is preferable that there be a gap between the first protruding piece 43a and the substrate 11 of the light source unit 10. However, if this gap is too large, foreign objects such as insects and dust may enter the spatial region S2 between the cover member 30 and the frame 20. Therefore, it is preferable that this gap be as small as possible. Furthermore, even if the cover member 30 thermally expands and the cover member 30 and the frame 20 are shifted to one side, it is preferable that the first protruding piece 43a and the main plate portion 21 overlap. This prevents foreign objects such as insects and dust from entering. It is also preferable that the main portion 31 of the cover member 30 and the main portion 41 of the end cap 40 do not push against each other even if the cover member 30 thermally expands.

[0234] The second protruding piece 43b is an extension portion-facing protruding piece that faces the extension portion 32 of the cover member 30. Specifically, when the LED lighting device 3 is attached to the fixture body 2 that is installed on the ceiling, the second protruding piece 43b faces the extension portion 32 in the horizontal direction. In this embodiment, at least a part of the second protruding piece 43b is positioned in the X-axis direction relative to the third plate portion 3 of the extension portion 32. 2b3. There is a gap between the second protruding piece 43b and the extension portion 32. The second protruding piece 43b extends in a direction intersecting the main surface of the main plate portion 21. Specifically, the second protruding piece 43b extends linearly in the Z-axis direction.

[0235] In the present embodiment, the second protruding piece 43b is connected to the first protruding piece 43a. Specifically, the second protruding piece 43b extends from each of both longitudinal end portions of the first protruding piece 43a in a direction away from the main plate portion 21. The length of the second protruding piece 43b is shorter than the length of the first protruding piece 43a.

[0236] The third protruding piece 43c faces the main plate portion 21 of the frame 20. Specifically, when the LED lighting device 3 is attached to the fixture body 2 installed on the ceiling, the third protruding piece 43c faces the main plate portion 21 of the frame 20 in the vertical direction (Z-axis direction).

[0237] Furthermore, the third protruding piece 43c is not only a main plate portion-facing protruding piece that faces the main plate portion 21 of the frame 20, but also an extension portion-facing protruding piece that faces the extension portion 32 of the cover member 30 in the vertical direction. Specifically, the third protruding piece 43c is located between the main plate portion 21 and the extension portion 32. The third protruding piece 43c is inserted into the space region S1 between the main plate portion 21 and the extension portion 32. This makes it possible to prevent foreign matter such as insects and dust from entering the space region S2 between the cover member 30 and the frame 20. Note that the third protruding piece 43c does not contact the main plate portion 21 or the extension portion 32, but this is not limited to this. The third protruding piece 43c may also contact the main plate portion 21, the protruding portion 20b, or the extension portion 32. This improves the insect-repellent effect.

[0238] Similar to the first protruding piece 43a, the third protruding piece 43c is provided at the end of the main part 41 on the ceiling side (the fixture body 2 side). Specifically, the third protruding piece 43c is provided on a linear portion of the outer periphery of the end cap 40 (main part 41).

[0239] Furthermore, the third protruding piece 43c is provided on the outer side of the first protruding piece 43a in the X-axis direction. That is, the third protruding piece 43c and the first protruding piece 43a are arranged side by side. However, in this embodiment, the ceiling-side end face of the third protruding piece 43c is located closer to the ceiling than the ceiling-side end face of the first protruding piece 43a. Specifically, the third protruding piece 43c is provided on the main part 41 so that a part of its ceiling-side end extends beyond the edge of the end of the main part 41 on the fixture body 2 side (ceiling side). Furthermore, the length of the third protruding piece 43c in the X-axis direction is shorter than the length of the first protruding piece 43a in the X-axis direction.

[0240] In this embodiment, the third protruding pieces 43c are provided on both sides of the first protruding piece 43a. That is, two third protruding pieces 43c are provided on the main portion 41. The first protruding piece 43a is sandwiched between the two third protruding pieces 43c. Note that there is a gap between the third protruding piece 43c and the first protruding piece 43a. The third plate portion 32b3 of the extension portion 32 of the cover member 30 is inserted into this gap.

[0241] The fourth protruding piece 43d is an extension-portion-facing protruding piece that faces the extension portion 32 of the cover member 30. Specifically, when the LED lighting device 3 is attached to the fixture body 2 that is installed on the ceiling, the fourth protruding piece 43d faces the extension portion 32 in the vertical direction (Z-axis direction). Specifically, the fourth protruding piece 43d faces the second plate portion 32b2 (inclined plate portion) of the extension portion 32. In this embodiment, the fourth protruding piece 43d extends so as to be inclined along the second plate portion 32b2 of the extension portion 32. The extension portion 32 of the cover member 30 is sandwiched between the third protruding piece 43c and the fourth protruding piece 43d.

[0242] The fourth protruding piece 43d is provided at a position where it can come into contact with the extended portion 32. Specifically, a gap exists between the fourth protruding piece 43d and the extended portion 32, and the fourth protruding piece 43d does not come into contact with the extended portion 32. However, when the extended portion 32 bends or deforms, the fourth protruding piece 43d may come into contact with the extended portion 32. This allows the fourth protruding piece 43d to hold the extended portion 32 of the cover member 30 and prevent deformation of the extended portion 32. Note that the wall portions that constitute the first continuous portion 42a, the second continuous portion 42c, and the discontinuous portion 42b in the fitting portion 42 may also serve as the fourth protruding piece 43d to hold the extended portion 32 and prevent deformation of the extended portion 32.

[0243] In this embodiment, the fourth protruding piece 43d is connected to the second protruding piece 43b and is continuous with the second protruding piece 43b. Specifically, the fourth protruding piece 43d is connected to an end of the second protruding piece 43b and extends from the end of the second protruding piece 43b. The length of the fourth protruding piece 43d is shorter than the length of the first protruding piece 43a. Furthermore, the length of the fourth protruding piece 43d is approximately the same as the length of the second protruding piece 43b, but is not limited to this. In other words, the length of the fourth protruding piece 43d may be shorter or longer than the length of the second protruding piece 43b.

[0244] Furthermore, the fourth protruding piece 43d is not connected to the fitting portion 42 and is discontinuous with the fitting portion 42. Therefore, a gap exists between the fourth protruding piece 43d and the fitting portion 42.

[0245] The outer protrusion 44 is a protrusion piece that protrudes from the outer surface 41b of the main portion 41 (cap body). The outer protrusion 44 protrudes outward in the longitudinal direction (Y-axis direction) of the cover member 30. By making the outer protrusion 44 protrude convexly from the main portion 41, the thickness of the end cap 40 can be increased in the portion where the outer protrusion 44 is provided. In this embodiment, the outer protrusion 44 is formed integrally with the main portion 41.

[0246] The heights (protrusion amounts in the Y-axis direction) of the first protruding piece 43a, the second protruding piece 43b, the third protruding piece 43c, and the fourth protruding piece 43d may all be the same or may all be different, or some of them may be the same height. For example, among the first protruding piece 43a, the second protruding piece 43b, the third protruding piece 43c, and the fourth protruding piece 43d, only the first protruding piece 43a may be tall, only the first protruding piece 43a and the second protruding piece 43b may be tall, or only the first protruding piece 43a, the second protruding piece 43b, and the third protruding piece 43c may be tall (i.e., only the fourth protruding piece 43d may be short).

[0247] The first protruding piece 43a, the second protruding piece 43b, the third protruding piece 43c, and the fourth protruding piece 43d may protrude from the mounting surface 41c, or may protrude from a position offset from the mounting surface 41c depending on the shape of the main portion 41. In this case, the first protruding piece 43a, the second protruding piece 43b, the third protruding piece 43c, and the fourth protruding piece 43d may protrude from a position outer than the mounting surface 41c in the Y-axis direction, or may protrude from a position inner than the mounting surface 41c. The first protruding piece 43a, the second protruding piece 43b, the third protruding piece 43c, and the fourth protruding piece 43d may protrude from positions different from each other in the Y-axis direction.

[0248] Although the first protruding piece 43a, the second protruding piece 43b, the third protruding piece 43c, and the fourth protruding piece 43d protrude parallel to the Y-axis direction, this is not limitative. For example, the second protruding piece 43b, the third protruding piece 43c, and the fourth protruding piece 43d may be inclined.

[0249] The outer protrusion 44 is provided at the end of the main part 41 on the ceiling side (the fixture body 2 side). Therefore, the outer protrusion 44 protrudes outward from the end of the main part 41 on the fixture body 2 side.

[0250] The outer protrusion 44 overlaps the opening edge 2a2, which is the appliance body end of the appliance body 2. Specifically, the outer protrusion 44 overlaps the opening edge 2a2 (appliance body end) in the Z-axis direction. In this embodiment, the outer protrusion 44 is provided as a protrusion across the entire width of the end of the main portion 41 on the appliance body 2 side, and the outer protrusion 44 overlaps the opening edge 2a2 over the entire length in the short side direction (X-axis direction) of the appliance body 2.

[0251] Since the outer protrusion 44 overlaps the opening edge 2a2 (the fixture body end) of the fixture body 2 in the Z-axis direction, the gap between the end cap 40 and the opening edge 2a2 is covered by the outer protrusion 44. As a result, even when the LED lighting fixture 1 installed on the ceiling is viewed diagonally or from directly below (in the Z-axis direction), the interior of the LED lighting fixture 1 is less likely to be seen through the gap between the end cap 40 and the opening edge 2a2. This improves the appearance of the LED lighting fixture 1, thereby achieving an LED lighting fixture 1 with excellent design. Note that even if the cover member 30 thermally contracts when the light is turned off, it is preferable that the outer protrusion 44 overlaps the opening edge 2a2 of the fixture body 2.

[0252] As described above, the fitting portion 42, the inner protrusion 43, and the outer protrusion 44 are integrally formed with the main portion 41. In this case, the main portion 41, the fitting portion 42, the inner protrusion 43, and the outer protrusion 44 may be made of two or more types of resin materials. For example, the outer protrusion 44 may be transparent or white, and the rest of the outer protrusion 44 may be milky white. By making the outer protrusion 44 transparent or milky white, the outer protrusion 44 can be made translucent. This allows light from the LEDs 12 to enter the outer protrusion 44 and cause it to emit light. Furthermore, by making the outer protrusion 44 white, the outer protrusion 44 can be made opaque. This makes the outer protrusion 44 less noticeable. In particular, by matching the color of the outer protrusion 44 to the color of the frame 20 or the fixture body 2, the outer protrusion 44 can be made less noticeable. An end cap 40 made of partially different resin materials can be formed by two-color molding.

[0253] A recess 45 is formed at the end of the end cap 40 on the ceiling side (the fixture body 2 side). The recess 45 is a bottomed hole recessed into a portion of the inner surface of the end cap 40. In this embodiment, the recess 45 is formed by cutting out a straight portion that is the edge of the end of the main portion 41 on the ceiling side so as to create a step in the straight portion. The recess 45 is also formed so as to recess a portion of the inner surface 41a of the main portion 41 in the thickness direction of the main portion 41.

[0254] The recessed portion 45 is formed near the end edge 46, which is the outermost end of the end cap 40. The recessed portion 45 is also formed at a position corresponding to the protruding portion 20b of the frame 20. Therefore, a pair of recessed portions 45 is provided corresponding to the pair of protruding portions 20b. Specifically, the pair of recessed portions 45 are provided at positions symmetrical on the left and right. As will be described in detail later, each of the pair of protruding portions 20b of the frame 20 is fitted into each of the pair of recessed portions 45. Therefore, the size of the recessed portion 45 in a plan view is large enough to fit the protruding portion 20b.

[0255] An elastic member 50 is attached to the end cap 40. In other words, the elastic member 50 is integral with the end cap 40. In this embodiment, the elastic member 50 is attached to the end cap 40 by integral molding. This eliminates the need for a separate operation to fix the elastic member 50 to the end cap 40, thereby improving the ease of assembly. Note that the elastic member 50 is not attached to the end cap 40 by integral molding, but is attached to a separately manufactured end cap 40 by a fixing member such as an adhesive. Take It may also be attached.

[0256] The elastic member 50 is attached to the end of the end cap 40 on the ceiling side. In the present embodiment, the elastic member 50 is attached to the inner protruding portion 43. Specifically, the elastic member 50 is attached and fixed to the first protruding piece 43a. More specifically, the elastic member 50 is attached to the main plate portion 21 side portion (the fixture body 2 side portion) of the first protruding piece 43a.

[0257] The elastic member 50 is an elastic body made of a resin material or the like, and is elastically deformable. In this embodiment, the elastic member 50 is made of an elastomer. As an example, the elastic member 50 is made of silicone rubber and has rubber elasticity. Note that the elastic member 50 made of an elastomer is not limited to a solid molded product, and may also be a foam molded product.

[0258] The elastic member 50 has a first elastic portion 51 provided between the main plate portion 21 of the frame 20 and the inner protrusion portion 43 of the end cap 40, and a second elastic portion 52 provided between the extension portion 32 of the cover member 30 and the inner protrusion portion 43 of the end cap 40.

[0259] The first elastic portion 51 is provided between the main plate portion 21 of the frame 20 and the first protruding piece 43a of the inner protruding portion 43. Specifically, the first elastic portion 51 is sandwiched between the main plate portion 21 and the first protruding piece 43a, and is provided so as to fill the gap between the main plate portion 21 and the first protruding piece 43a. Since the main plate portion 21 extends in the X-axis direction, the first elastic portion 51 also extends in the X-axis direction. In this embodiment, the first elastic portion 51 is formed in a thin plate shape. The thin plate-shaped first elastic portion 51 is arranged in an inclined state in the gap between the first protruding piece 43a and the main plate portion 21 of the frame 20.

[0260] The second elastic portion 52 is provided between the extension portion 32 of the cover member 30 and the second protruding piece 43b of the inner protruding portion 43. Specifically, the second elastic portion 52 is sandwiched between the third plate portion 32b3 of the extension portion 32 and the second protruding piece 43b, and is provided so as to fill the gap between the third plate portion 32b3 of the extension portion 32 and the second protruding piece 43b.

[0261] In this way, by not only providing a first elastic portion 51 between the main plate portion 21 of the frame 20 and the first protruding piece 43a, but also providing a second elastic portion 52 between the extension portion 32 of the cover member 30 and the second protruding piece 43b, the first elastic portion 51 and the second elastic portion 52 function as gasket members, and not only can they seal the gap between the main plate portion 21 of the frame 20 and the end cap 40 (the gap in the Z-axis direction), but they can also seal the gap between the extension portion 32 of the cover member 30 and the end cap 40 (particularly the gap in the X-axis direction).

[0262] With this configuration, even if gaps occur between the cover member 30, frame 20, and end cap 40 due to dimensional variations or warping, undulation, twisting, etc., in the cover member 30, frame 20, and end cap 40, the gaps can be sealed by the elastic member 50. Furthermore, even if gaps occur between the cover member 30, frame 20, and end cap 40 due to distortion of the outer shapes of the cover member 30, frame 20, and end cap 40 from their predetermined shapes during the component manufacturing process or assembly process, or due to external forces being applied during installation of the LED lighting device 1, the gaps can be sealed by the elastic member 50. In other words, the elastic member 50 can absorb gaps that occur between the cover member 30, frame 20, and end cap 40. Therefore, it is possible to prevent insects, dust, and other foreign objects from entering the spatial region S2 (insect-proof region) between the cover member 30 and frame 20. In other words, the insect-proofing effect can be maintained.

[0263] Furthermore, since the elastic member 50 having rubber elasticity is inserted in the contact portion between the frame 20 and the end cap 40, it is possible to reduce abnormal noise that occurs when the cover member 30 is thermally shrunk in the longitudinal direction.

[0264] The first elastic portion 51 of the elastic member 50 is preferably provided on the first protruding piece 43a closer to the inside of the cover member 30 in the Y-axis direction. This allows the insect-repellent effect of the elastic member 50 to be maintained even if the end cap 40 moves in the Y-axis direction due to a difference in thermal expansion between the cover member 30 and the frame 20 when the LED lighting device 3 is turned on. Furthermore, by providing the first elastic portion 51 on the first protruding piece 43a closer to the inside of the cover member 30, the first elastic portion 51 can be spaced away from the opening edge 2a2 (the opening edge of the recess 2a) and can also be spaced away from the outer protruding portion 44 of the end cap 40. This prevents the elastic member 50 from being seen through the gap between the opening edge 2a2 and the end cap 40.

[0265] The color of the elastic member 50 is arbitrary. For example, the color of the elastic member 50 may be transparent, milky white, or white. This makes the elastic member 50 less noticeable. The color of the elastic member 50 may also be black. This allows the elastic member 50 to be formed from an inexpensive material. As described above, the elastic member 50 may be translucent, such as transparent or milky white, or may be opaque, such as white or black. The elastic member 50 may also be light-reflecting, such as white or milky white, or light-absorbing, such as black. Note that a milky white elastic member 50 not only transmits light but also diffuses and reflects it.

[0266] In the present embodiment, the elastically deformable elastic member 50 is configured to contact the first protruding piece 43a and the second protruding piece 43b. However, this is not limiting. For example, the elastic member 50 may also be configured to contact the fourth protruding piece 43d. Furthermore, an elastic member (elastomer, etc.) other than the elastic member 50 may be provided so as to contact the third protruding piece 43c or the fourth protruding piece 43d, or so as to contact the frame 20. That is, a plurality of elastic members may be provided on the end cap 40. In this case, the elastically deformable elastic member may be provided between the third protruding piece 43c and the extension portion 32 of the cover member 30, or between the third protruding piece 43c and the frame 20. This can prevent insects from entering the spatial region S1, thereby further preventing insects from entering the spatial region S2 where insects are truly unwanted. Furthermore, the elastically deformable elastic member may be provided between the fourth protruding piece 43d and the extension portion 32 of the cover member 30. Furthermore, by bringing an elastic member into contact with the fourth protruding piece 43d, the tip of the extension portion 32 can be brought into more secure contact with the main plate portion 21 of the frame 20. This further prevents insects from entering the spatial region S2.

[0267] In addition, in the present embodiment, the elastic member 50 is provided on the end cap 40, but this is not limiting. For example, the elastic member 50 may be provided on the frame 20 or the opening edge 2a2 (the end of the appliance body). Furthermore, the elastic member 50 does not have to be provided. In this case, it is preferable that the gap between the end cap 40 and the frame 20 is as small as possible. Furthermore, if the elastic member 50 is not provided, the first protruding piece 43a of the end cap 40 does not have to be in contact with the main plate portion 21 of the frame 20, but may be in contact. By keeping the first protruding piece 43a and the main plate portion 21 out of contact, abnormal noise due to contact between the components can be reduced. Furthermore, by bringing the first protruding piece 43a into contact with the main plate portion 21, an insect repellent effect can be obtained without providing the elastic member 50.

[0268] The end cap 40 configured in this manner is fixed to the cover member 30. The end cap 40 and the cover member 30 can be fixed together by, for example, using an adhesive. A method for fixing the end cap 40 and the cover member 30 together using an adhesive will be described with reference to Figure 21. Figure 21 is a diagram for explaining the method for fixing the end cap 40 and the cover member 30 together.

[0269] As shown in (a) of FIG. 21, first, liquid adhesive 80 is applied to the outer wall surface of fitting portion 42 of end cap 40. For example, liquid adhesive 80 is applied by dripping it onto three locations on the outer wall surface of fitting portion 42. Because fitting portion 42 is curved to follow the shape of the outer peripheral edge of end cap 40, liquid adhesive 80 applied to fitting portion 42 flows downward along the outer wall surface of fitting portion 42. As a result, adhesive 80 wets and spreads over the outer wall surface of fitting portion 42, allowing adhesive 80 to be applied to a predetermined position on fitting portion 42.

[0270] 21(b), the cover member 30 is fitted into the end cap 40. Specifically, the longitudinal end of the main portion 31 of the cover member 30 is fitted into the fitting portion 42 of the end cap 40 so that the longitudinal end of the main portion 31 of the cover member 30 abuts against the mounting surface 41c of the end cap 40.

[0271] At this time, as shown in FIG. 21(a), the second elastic portion 52 of the elastic member 50 attached to the end cap 40 has a triangular protruding portion 52a, and the extension portion 32 of the cover member 30 moves along this protruding portion 52a. In this manner, the protruding portion 52a of the second elastic portion 52 functions as a guide portion that guides the extension portion 32 of the cover member 30 to a predetermined position on the end cap 40. This allows the end cap 40 and the cover member 30 to be easily fitted together, improving the ease of assembly of the cover member 30 and the end cap 40. Furthermore, providing the protruding portion 52a on the second elastic portion 52 increases the bonding strength between the second elastic portion 52 and the end cap 40, thereby preventing the second elastic portion 52 from peeling or tearing off from the end cap 40.

[0272] After the cover member 30 is fitted into the end cap 40, the adhesive 80 is hardened. For example, if the adhesive 80 is an ultraviolet curing resin, the adhesive 80 is hardened by irradiating it with ultraviolet light. If the adhesive 80 is a thermosetting resin, the adhesive 80 is hardened by heating or air drying. When the adhesive 80 hardens, the end cap 40 and the cover member 30 are fixed together.

[0273] In this embodiment, since the elastic member 50 is attached to the end cap 40, when the cover member 30 is fitted into the end cap 40 to which the liquid adhesive 80 has been applied, the end cap 40 can be temporarily held to the cover member 30 by friction caused by the elastic member 50 until the adhesive 80 hardens. Specifically, the end cap 40 can be temporarily held to the cover member 30 by the second elastic portion 52 between the extension portion 32 of the cover member 30 and the second protruding piece 43b of the end cap 40. By temporarily holding the end cap 40 in this manner, the ease of assembling the end cap 40 and the cover member 30 can be improved.

[0274] Next, the fixing portions of the cover member 30 and the end cap 40 fixed in this manner will be described.

[0275] In this embodiment, the main portion 31 and the extension portion 32 of the cover member 30 differ in whether they are fixed to the end cap 40. Specifically, the main portion 31 of the cover member 30 is fixed to the end cap 40, but at least the tip of the extension portion 32 of the cover member 30 is not fixed to the end cap 40. This allows at least the tip of the extension portion 32 to move, so that the extension portion 32 can be pressed against the main plate portion 21 of the frame 20.

[0276] This configuration can absorb dimensional variations and warping, undulation, twisting, etc. of the cover member 30, frame 20, and end cap 40, and can prevent foreign matter such as insects and dust from entering the space region S2 (insect-proof region) between the cover member 30 and frame 20. In other words, even if dimensional variations or warping, undulation, twisting, etc. occur in the cover member 30, frame 20, and end cap 40, at least the tip of the extension portion 32 moves and bends, so the extension portion 32 can maintain its pressed state against the main plate portion 21 of the frame 20. Therefore, the insect-proof effect of the extension portion 32 can be maintained, and the invasion of foreign matter such as insects and dust into the space region S2 between the cover member 30 and frame 20 can be prevented.

[0277] In this embodiment, the main portion 31 of the cover member 30 of The longitudinal ends are fixed to the mounting surface 41c of the main portion 41 of the end cap 40. On the other hand, with respect to the extension portion 32 that abuts against the frame 20 while being pressed against it, the entire inner extension portion 32b of the extension portion 32 is not fixed to the end cap 40.

[0278] This configuration allows the extension portion 32 to have a larger range of movement, which can better absorb dimensional variations in the cover member 30, frame 20, and end cap 40. This further maintains the insect-repellent effect of the extension portion 32.

[0279] Moreover, by not fixing the extension portion 32 of the cover member 30, it is possible to reduce the number of assembly steps and the amount of adhesive used for fixing. Furthermore, by making the extension portion 32 movable, the attachment portion 33 (leg portion) of the cover member 30 also bends inward, making it possible to make the cover member 30 less likely to come off.

[0280] In the present embodiment, outer extension portion 32a of extension portion 32 is fixed to end cap 40, but it does not have to be fixed to end cap 40. This allows the movable range of extension portion 32 to be further increased, thereby enhancing the insect repellent effect of extension portion 32 and making cover member 30 even more difficult to come off.

[0281] In addition, in this embodiment, the mounting portion 33 (leg portion) of the cover member 30 is not in contact with the end cap 40, but the mounting portion 33 and the end cap 40 may be in contact. However, whether the mounting portion 33 and the end cap 40 are in contact or not, it is better for the mounting portion 33 and the end cap 40 not to be fixed to each other. By not fixing the mounting portion 33 to the end cap 40 in this way, when fitting the cover member 30 into the frame 20 as shown in FIG. 13 , not only the extension portion 32 but also the mounting portion 33 bends, making it possible to easily fit the cover member 30 into the frame 20. The mounting portion 33 and the end cap 40 may also be fixed to each other.

[0282] Next, the bonding portion between the main portion 31 of the cover member 30 and the end cap 40 will be described. As shown in FIG. 19, the fitting portion 42 of the end cap 40, into which the main portion 31 of the cover member 30 is fitted, has a first continuous portion 42a and a second continuous portion 42c, and a discontinuous portion 42b located between the first continuous portion 42a and the second continuous portion 42c. Therefore, as shown in FIG. 19, the joint between the main portion 31 of the cover member 30 and the end cap 40 has a bonding region P1 (region surrounded by a dashed line indicated by length A) where the main portion 31 and the end cap 40 are bonded, and a non-bonding region P2 (region surrounded by a dashed line indicated by length B) where the main portion 31 and the end cap 40 are not bonded. This point will be described using FIG. 22. FIG. 22 is a diagram showing how adhesive 80 applied to the fitting portion 42 of the end cap 40 flows along the outer wall surface of the fitting portion 42.

[0283] The adhesive 80 applied to the fitting portion 42 of the end cap 40 flows along the outer wall surface of the fitting portion 42, as shown by the dashed arrow in Figure 22. At this time, the fitting portion 42 has a discontinuous portion 42b formed by recessing a portion of the fitting portion 42, which prevents the adhesive 80 applied to the first continuous portion 42a of the fitting portion 42 from flowing toward the mounting surface 41c and the second continuous portion 42c on the end edge 46 side (downstream side) of the discontinuous portion 42b.

[0284] Specifically, adhesive 80a from the adhesive 80 applied to the first continuous portion 42a that reaches the discontinuous portion 42b flows along the recessed wall surface of the discontinuous portion 42b and remains there. Even if the adhesive 80a flows downstream of the discontinuous portion 42b, the adhesive 80a flows along the bottom (base) of the discontinuous portion 42b toward the upper portion of the wall of the discontinuous portion 42b (the near side in FIG. 22), allowing the adhesive 80a to escape. This prevents the adhesive 80 applied to the first continuous portion 42a from reaching the mounting surface 41c and the second continuous portion 42c that are closer to the end edge 46 than the discontinuous portion 42b.

[0285] Furthermore, in this embodiment, a recess 41c1 is provided in the mounting surface 41c along the opening of the recessed fitting portion 42 formed by forming the discontinuous portion 42b. As a result, adhesive 80b, which is part of the adhesive 80 applied to the first continuous portion 42a and flows from the discontinuous portion 42b toward the mounting surface 41c, remains at the opening edge of the recess 41c1 due to surface tension caused by the opening edge of the recess 41c1. Even if the adhesive 80b exceeds the opening edge of the recess 41c1, the adhesive 80b can be drawn into the recess 41c1. In this way, the recess 41c1 prevents the adhesive 80b from exceeding the recess 41c1 and reaching the mounting surface 41c.

[0286] The slit-shaped recess 41c1 is preferably formed in a position where a part of the slit width direction overlaps with the main portion 31 of the cover member 30, and another part of the slit width direction does not overlap with the main portion 31 of the cover member 30. This makes it easier for the adhesive 80 to flow into the recess 41c1, and prevents the adhesive 80 from flowing into the attachment surface 41c, which becomes the non-bonding region P2.

[0287] Furthermore, in this embodiment, the height of the end of the first continuous portion 42a on the discontinuous portion 42b side is lower than the height of the other portions. This causes the adhesive 80c that reaches the end of the first continuous portion 42a on the discontinuous portion 42b side to flow toward the upper part of the wall (the front side of FIG. 22). In other words, the adhesive 80c can be allowed to escape so that it does not reach the discontinuous portion 42b.

[0288] As described above, the structure of the fitting portion 42 of the end cap 40 in this embodiment allows the adhesive 80 applied to the first continuous portion 42a of the fitting portion 42 to be interrupted and cut off at the discontinuous portion 42b. As a result, the adhesive 80 is prevented from flowing to the mounting surface 41c and the second continuous portion 42c on the end edge 46 side (downstream side) of the discontinuous portion 42b. Specifically, the adhesive 80 is prevented from reaching the second continuous portion 42c.

[0289] As a result, when the main portion 31 of the cover member 30 and the end cap 40 are joined and fixed to each other with the adhesive 80, the main portion 31 and the end cap 40 are fixed to each other in the portion corresponding to the first continuous portion 42a of the fitting portion 42, but are not fixed to each other in the portions corresponding to the discontinuous portion 42b and the second continuous portion 42c of the fitting portion 42. In other words, the first continuous portion 42a of the fitting portion 42 and the main portion 31 are fixed to each other, but the discontinuous portion 42b and the second continuous portion 42c of the fitting portion 42 and the main portion 31 are not fixed to each other. 19, the joint between the main portion 31 of the cover member 30 and the end cap 40 has a fixed region P1 where the main portion 31 and the first continuous portion 42a of the fitting portion 42 are fixed, and a non-fixed region P2 where the main portion 31 and the discontinuous portion 42b and the second continuous portion 42c are not fixed. The non-fixed region P2 is preferably located outboard of the outer end of the fixed region P1 in the width direction (X-axis direction) of the end cap 40.

[0290] From the perspective of forming the fixed region P1 and the non-fixed region P2, it is sufficient that the fitting portion 42 has the first continuous portion 42a and the discontinuous portion 42b. In other words, the second continuous portion 42c does not necessarily have to be provided in the fitting portion. However, by providing the second continuous portion 42c, the second continuous portion 42c can support the main portion 31 of the cover member 30, thereby stabilizing the shape of the cover member 30 and preventing the cover member 30 from shifting in the width direction, thereby positioning the cover member 30. Furthermore, the second continuous portion 42c can also support the extension portion 32 of the cover member 30, preventing the extension portion 32 from cracking.

[0291] Here, the effect of the presence of the bonded region P1 and the non-bonded region P2 at the joint between the main portion 31 of the cover member 30 and the end cap 40 will be explained with reference to FIGS. 23 and 24. 3x LED lighting devicesThe following description will be made in comparison with end cap 40x. Fig. 23 is a diagram showing the configuration of end cap 40x as a comparative example. Fig. 24 is a diagram showing how cover member 30 is attached to frame 20 when end cap 40x as a comparative example is used and when end cap 40 according to the present embodiment is used.

[0292] 23, in the end cap 40x of the comparative example, the fitting portion 42x does not have a discontinuous portion, and the fitting portion 42x is formed continuously up to the vicinity of the end edge 46 along the shape of the outer peripheral edge of the curved portion of the main portion 41. In the end cap 40x of the comparative example, the first protruding piece 43ax, the second protruding piece 43bx, and the fourth protruding piece 43dx are connected, and the fitting portion 42x is also connected to the first protruding piece 43ax, the second protruding piece 43bx, and the fourth protruding piece 43dx.

[0293] When the end cap 40x and cover member 30 configured in this manner are bonded together with adhesive 80, the adhesive 80 applied to the fitting portion 42x of the end cap 40x flows along the outer wall surface of the fitting portion 42x to the vicinity of the end edge 46 and then flows onto the mounting surface 41c of the entire curved portion of the main portion 41. Furthermore, the adhesive 80 flows around to the location of the fourth protruding piece 43dx that faces the extension portion 32 of the cover member 30. As a result, not only are the end cap 40x and the main portion 31 of the cover member 30 fixed together and the main portion 31 does not move, but the end cap 40x and the extension portion 32 of the cover member 30 are fixed together and the extension portion 32 does not move either.

[0294] Therefore, when attaching the cover member 30 to which the end cap 40x of the comparative example is fixed to the frame 20, the extension portion 32 does not move, so as shown by the dashed line in Figure 24(a), only the mounting portion 33 is bent outward to fit the cover member 30 into the frame 20. In this case, the amount of deformation of the mounting portion 33 becomes large, which may cause the cover member 30 to crack or deform. For example, stress may be concentrated at the connecting portion (the base portion of the mounting portion) between the main portion 31 and the mounting portion 33 of the cover member 30, which may cause the connecting portion between the main portion 31 and the mounting portion 33 to crack.

[0295] In particular, if the length of the side plate portion 24 (extension portion) of the frame 20 is shortened in accordance with the strength required for the length of the LED lighting device 3, the length of the mounting portion 33 of the cover member 30 will also be shortened accordingly. In this case, when attaching the cover member 30 to the frame 20, the mounting portion 33 needs to bend even more, and the amount of deformation of the mounting portion 33 will further increase. As a result, the cover member 30 will be more susceptible to cracking and deformation.

[0296] In contrast, in the LED lighting device 3 of the present embodiment, the joint between the main portion 31 of the cover member 30 and the end cap 40 includes a fixed region P1 where the main portion 31 and the end cap 40 are fixed and a non-fixed region P2 where the main portion 31 and the end cap 40 are not fixed. This allows the main portion 31 of the cover member 30 to move in the non-fixed region P2. Specifically, the main portion 31 corresponding to the discontinuous portion 42b and the second continuous portion 42c of the fitting portion 42, which form the non-fixed region P2, moves. Furthermore, the non-fixed region P2 prevents the adhesive 80 applied to the end cap 40 from reaching the portion facing the extension portion 32 of the cover member 30. This allows not only a portion of the main portion 31 to move widthwise, but also the extension portion 32 to move widthwise.

[0297] Therefore, when the cover member 30 to which the end cap 40 of this embodiment is fixed is attached to the frame 20, a part of the main portion 31 and the extension portion 32 move in the width direction, so that not only the mounting portion 33 but also the part of the main portion 31 and the extension portion 32 can be bent outward as shown by the dashed line in (b) of Figure 24.

[0298] This reduces the amount of deformation of the mounting portion 33 itself, thereby preventing cracking or deformation of the cover member 30. Furthermore, when fitting the cover member 30 into the frame 20, it is possible to increase the range of motion of the mounting portion 33 by moving not only the mounting portion 33 but also a part of the main portion 31 and the extension portion 32 together. This makes it easier to mount the cover member 30 to the frame 20, improving assembly efficiency.

[0299] Furthermore, the ratio of height to width (width / height) of frame 20 is preferably between 5 and 20. This makes it possible to easily spread mounting portion 33 outward, making it easier to attach cover member 30 to frame 20, while also preventing cover member 30 from cracking when mounting portion 33 is spread.

[0300] 19, on the mounting surface 41c that follows the outline of the curved portion of the main portion 41 of half of the end cap 40, if the length of the fixed region P1 is A and the length of the non-fixed region P2 is B, the ratio of A to B (A / B) should be between 2 and 10. This makes it possible to easily attach the cover member 30, to which the end cap 40 is fixed, to the frame 20 while also making it difficult for the cover member 30 to come off the frame 20. The starting position of the length B of the non-fixed region P2 (the end on the fixed region P1 side) should be located near the end of the frame 20 in the width direction or outside the end of the frame 20 in the width direction.

[0301] Furthermore, if the folded length of the contact portion 33a of the attachment portion 33 in the cover member 30 is C, and the total length of the length B of the non-fixed region P2 and the length of the side plate portion 24 of the frame 20 is D, then the ratio of D to C (D / C) should be between 3 and 10. This makes it possible to both suppress cracking of the cover member 30 and make it difficult for the cover member 30 to come off the frame 20.

[0302] In the present embodiment, the discontinuous portion 42b is provided in the fitting portion 42 of the end cap 40, and the adhesive 80 is interrupted at the discontinuous portion 42b to separate the edges. However, this is not limited to this. For example, as shown in FIG. 25(b), a cutout portion 32a1 may be provided in the extension portion 32 of the cover member 30, so that the adhesive 80 is interrupted at the cutout portion 32a1. In FIG. 25(a), (a) is a cross-sectional view of the LED lighting device 3, and (b) is a rear view of only the cover member 30 of (a). In this modification, the cutout portion 32a1 of the extension portion 32 is formed so as to cut out the end of the outer extension portion 32a on the end cap 40 side, as shown in FIG. 25(b). In this way, by providing the cutout portion 32a1 in the outer extension portion 32a of the extension portion 32, when the end cap 40, to which the adhesive 80 has been applied, and the cover member 30 are fitted together and fixed, it is possible to prevent the adhesive 80 from spreading around to the vicinity of the inner extension portion 32b of the extension portion 32. Therefore, it is possible to prevent the inner extension portion 32b of the extension portion 32 from being fixed to the end cap 40. Note that, in order to maintain the insect repellent effect of the extension portion 32 while preventing the adhesive 80 from spreading around, it is preferable that the depth (length in the Y-axis direction) of the cutout portion 32a1 be equal to or less than the height of the protruding piece 43e that covers the extension portion 32. The protruding piece 43e is connected to the second protruding piece 43b and the fitting portion 42.

[0303] In the present embodiment, the discontinuous portion 42b of the fitting portion 42 of the end cap 40 is part of the protrusion that constitutes the fitting portion 42, but this is not limiting. Specifically, as shown in FIGS. 26(a) to 26(d), the discontinuous portion 42b of the fitting portion 42 may be a divided portion (gap) that divides a part of the fitting portion 42. In this case, the discontinuous portion 42b, which is a divided portion, may be located at a position corresponding to the curved portion of the main portion 41 of the end cap 40, as shown in FIGS. 26(a) and 26(b). Note that in FIG. 26(a), the discontinuous portion 42b is located closer to the apex of the curved portion of the main portion 41 than the connecting portion between the main portion 31 and the attachment portion 33 of the cover member 30. In FIG. 26(b), the discontinuous portion 42b is located at the connecting portion between the main portion 31 and the attachment portion 33 of the cover member 30. 26(c) and 26(d), the discontinuous portion 42b serving as a dividing portion may be located at a position corresponding to the extended portion 32 of the cover member 30. As shown in FIG. 26(c), the discontinuous portion 42b serving as a dividing portion may be located at a position corresponding to the outer end of the outer extended portion 32a of the extended portion 32, but as shown in FIG. 26(d), if the outer extended portion 32a is long, the discontinuous portion 42b may be located at a position corresponding to the center of the outer extended portion 32a. In this way, by changing the position of the discontinuous portion 42b (dividing portion) in the fitting portion 42, the relative lengths of the fixed region P1 and the non-fixed region P2 can be changed.

[0304] As described above, in the LED lighting device 3 of this embodiment, the cover member 30 and the end cap 40 are fixed to each other with the adhesive 80 to form a fixing region P1, but the adhesive 80 in the fixing region P1 may be present between the main portion 31 of the cover member 30 and the fitting portion 42 of the end cap 40 as shown in Fig. 27, or may be present between the longitudinal end face of the main portion 31 of the cover member 30 and the mounting surface 41c of the end cap 40 as shown in Fig. 28, or may be present on both sides. In other words, the cover member 30 and the end cap 40 may be fixed to each other at the fitting portion 42, at the mounting surface 41c, or both.

[0305] Furthermore, in the above embodiment, the extension portion 32 of the cover member 30 is not fixed to the end cap 40. As a result, the tip of the extension portion 32 is pressed against the main plate portion 21 of the frame 20 while elastically deforming, so that even if there is component variation, warping, twisting, undulation, etc., the tip of the extension portion 32 comes into contact with the main plate portion 21, thereby preventing insects from entering the spatial region S2. Note that the extension portion 32 of the cover member 30 and the end cap 40 may be fixed to each other. In this case, the adhesive 80 that bonds the cover member 30 to the end cap 40 is present between the extension portion 32 of the cover member 30 and the fitting portion 42 of the end cap 40. Specifically, the adhesive 80 that bonds the cover member 30 and the end cap 40 may be present between the outer extension portion 32a of the extension portion 32 and the fitting portion 42 as shown in Fig. 29, or between the inner extension portion 32b of the extension portion 32 and the fitting portion 42 as shown in Fig. 30, or may be present in both places. That is, a part of the extension portion 32 and a part of the fitting portion 42 may be bonded together. However, even when bonding the extension portion 32 to the end cap 40, it is preferable to bond the extension portion 32 to the fitting portion 42 without bonding the tip of the extension portion 32 so that the tip of the extension portion 32 is movable.

[0306] Although the cover member 30 and the end cap 40 are bonded to each other using the adhesive 80 in the present embodiment, this is not limiting. For example, the cover member 30 and the end cap 40 may be bonded to each other using ultrasonic welding or laser welding. In this case, as in the end cap 40A shown in FIG. 31, a protruding rib 41c2 (linear rib) extending along the mounting surface 41c may be formed on the mounting surface 41c. The rib 41c2 may be formed over the entire curved portion of the main portion 41, as shown by the dashed line in FIG. 32. Furthermore, the rib 41c2 may be formed not only on the curved portion of the main portion 41 but also at a position corresponding to the extension portion 32, as shown by the dashed line in FIG. 33. However, in this case, it is preferable that the rib 41c2 not be formed at a position corresponding to the third plate portion 32b3, which is the tip of the extension portion 32, so that the tip of the extension portion 32 can move.

[0307] By forming the rib 41c2 on the mounting surface 41c of the end cap 40A in this way, the cover member 30 and the end cap 40A can be fixed together by fusing the rib 41c2 with ultrasound or a laser. In other words, the rib 41c2 is a welding rib. The cross-sectional shape of the rib 41c2 is, for example, a substantially isosceles triangle. In this case, the rib 41c2 has, for example, a height of 0.25 mm, a base width of 0.4 mm, and a radius of curvature R of the arc at the apex of 0.05 mm.

[0308] In the end cap 40A shown in FIGS. 32 and 33, the rib 41c2 is a linear rib extending linearly, but this is not limiting. For example, as in the end cap 40A shown in FIGS. 34 and 35, the rib 41c2 may be a dotted rib formed in a dotted pattern. In this case, the dotted rib 41c2 may be formed over the entire curved portion of the main portion 41, as shown in FIG. 34, or may be formed not only in the curved portion of the main portion 41 but also in a position corresponding to the extension portion 32, as shown in FIG. 35. However, in this case, it is preferable that the rib 41c2 not be formed in a position corresponding to the third plate portion 32b3, which is the tip of the extension portion 32, so that the tip of the extension portion 32 can move.

[0309] As described above, in the above embodiment, the extension portion 32 of the cover member 30 and the end cap 40 are in surface contact, but as shown in FIGS. 31 to 33, by using an end cap 40A on which the rib 41c2, which is a linear rib, is formed, the extension portion 32 of the cover member 30 and the end cap 40A are in line contact. Also, as shown in FIGS. 34 and 35, by using an end cap 40A on which the rib 41c2, which is a point rib, is formed, the extension portion 32 of the cover member 30 and the end cap 40A are in point contact. However, from the viewpoint of insect-repellent effect, it is better for the extension portion 32 and the end cap 40 to be in surface contact or line contact rather than point contact, and it is even better for the extension portion 32 and the end cap 40 to be in surface contact rather than line contact.

[0310] The method for fastening the cover member 30 and the end cap 40 is not limited to adhesive (solvent), ultrasonic welding, or laser welding. For example, the cover member 30 and the end cap 40 may be fastened by heat caulking, hot pressing, heat welding, or an adhesive such as double-sided tape.

[0311] Next, the joint portion between the frame 20 and the end cap 40 in the LED lighting device 3 according to this embodiment will be described using Fig. 36 and Fig. 37, while also referring to Fig. 17 and Fig. 20. Fig. 36 and Fig. 37 are cross-sectional views of the LED lighting device 3 taken along a plane passing through the recessed portion 45 of the end cap 40 in the YZ plane. Fig. 36 is a perspective view of the cross section, and Fig. 37 is a side view of the cross section.

[0312] As shown in FIG. 17 , the end cap 40 has a recessed portion 45. As shown in FIG. 20 , when viewed in the longitudinal direction (Y-axis direction) of the frame 20, at least a portion of the recessed portion 45 overlaps with the protruding portion 20b of the frame 20. Specifically, when viewed in the longitudinal direction of the frame 20, the recessed portion 45 overlaps with the horizontal plate portion 23 that constitutes the protruding portion 20b. In this embodiment, the horizontal plate portion 23 has an inclined plate portion, and therefore the recessed portion 45 overlaps with the inclined plate portion that constitutes the horizontal plate portion 23. Furthermore, when viewed in the longitudinal direction of the frame 20, the recessed portion 45 also overlaps with the upright plate portion 22 that constitutes the protruding portion 20b. In this embodiment, the recessed portion 45 overlaps with the entire protruding portion 20b in the longitudinal direction of the frame 20. However, the present invention is not limited to this, and it is preferable that the recessed portion 45 overlap with 50% or more of the protruding portion 20b. Furthermore, even if the cover member 30 is thermally shrunk, the pitch of the recessed portions 45 of the pair of end caps 40 should preferably be greater than the overall length of the frame 20 in the longitudinal direction.

[0313] 36 and 37, the recessed portion 45 is formed by recessing a portion of the inner surface 41a of the main portion 41 of the end cap 40 in the thickness direction of the main portion 41. The recessed portion 45 is formed by cutting out a straight portion that is the end portion on the ceiling side of the end cap 40 so as to create a step at the edge of the straight portion. The protruding portion 20b of the frame 20 fits into the recessed portion 45 of the end cap 40. Specifically, the entire protruding portion 20b of the frame 20 (the height of the protruding portion 20b) fits into the recessed portion 45.

[0314] This configuration makes it possible to prevent the frame 20 from coming off the end cap 40 even if dimensional variations or warping, undulation, twisting, etc. occur in the cover member 30, frame 20, and end cap 40. In other words, it is possible to prevent the frame 20 from coming off the cover member 30 to which the end cap 40 is fixed. In particular, by using the recess 45 to restrict the position of the protrusion 20b formed on the frame 20 to increase its strength, it is possible to maintain the high strength of the frame 20.

[0315] Furthermore, the recessed portion 45 is formed by recessing the inner surface 41a of the thick main portion 41, and therefore the bottom of the recessed portion 45 is thick. This prevents the strength of the end cap 40 from decreasing even when the recessed portion 45 is formed in the main portion 41, and effectively prevents the frame 20 from coming off the end cap 40 (cover member 30).

[0316] As shown in Figure 20, the recessed portion 45 does not overlap the main plate portion 21 and the side plate portion 24 of the frame 20 in the longitudinal direction of the frame 20, but it may overlap the main plate portion 21, or it may overlap both the main plate portion 21 and the side plate portion 24.

[0317] When attaching the frame 20 to the cover member 30 to which the end cap 40, on which the recessed portion 45 is formed, is fixed, as shown in Figures 38(a) and 38(b), the frame 20 is moved in the Z-axis direction so that the protruding portion 20b faces the recessed portion 45 of the end cap 40, thereby fitting the protruding portion 20b into the recessed portion 45. This allows the frame 20 to be aligned by the recessed portion 45, thereby improving the ease of assembly when attaching the frame 20 to the cover member 30.

[0318] 39, the inner surface of the recess 45 on the longitudinal side of the frame 20 may be inclined. Specifically, the inner surface of the recess 45 may be a forward tapered inclined surface. This makes it easier to align the frame 20 when attaching the frame 20 to the cover member 30. Note that the inner surface of the recess 45 on the longitudinal side of the frame 20 may be a curved surface instead of an inclined surface.

[0319] Note that the inner surface of the recessed portion 45 on the widthwise side of the frame 20 may be inclined or curved, rather than the inner surface of the recessed portion 45 on the lengthwise side of the frame 20. This makes it easier to align the frame 20 when attaching the frame 20 to the cover member 30. Alternatively, both the inner surface of the recessed portion 45 on the lengthwise side and the inner surface of the recessed portion 45 on the widthwise side of the frame 20 may be inclined or curved.

[0320] 40, the extension portion 32 of the cover member 30 may extend from the mounting portion 33 instead of extending from the main portion 31. In this case, the extension portion 32 does not have the outer extension portion 32a, and has only the inner extension portion 32b. This configuration makes it easier to bend the mounting portion 33, and therefore, as shown in FIGS. 40(a) and 40(b), when fitting the protrusion 20b of the frame 20 into the recess 45 of the end cap 40, the recess 45 makes it easier to align the frame 20, and the cover member 30 and the frame 20 can be easily fitted together.

[0321] In a cross section taken along a plane passing through the recessed portion 45 of the end cap 40 (cross sections in FIGS. 36 and 37 ), the outer protrusion 44 of the end cap 40, the opening end of the opening edge 2a2 (appliance body end) of the device body 2, the recessed portion 45 of the end cap 40, the end of the frame 20, the end of the cover member 30, and the third protrusion 43c of the end cap 40 are located in this order along the Y-axis direction. In a cross section taken along a plane passing through the center of the end cap 40 (cross section in FIG. 5 ), the outer protrusion 44 of the end cap 40, the opening end of the opening edge 2a2 (appliance body end) of the device body 2, the end of the frame 20, the end of the cover member 30, and the third protrusion 43c are located in this order along the Y-axis direction. In addition, the positions of the end of the frame 20 and the end of the cover member 30 may be reversed.

[0322] Next, modified examples of the fourth protruding piece 43d of the inner protruding portion 43 of the end cap 40 will be described with reference to FIGS.

[0323] In the LED lighting device 3 according to the above embodiment, the fourth protruding piece 43d of the end cap 40 is not connected to the fitting portion 42, but this is not limiting. Specifically, as in the end cap 40B of the LED lighting device 3B shown in FIG. 41, the fourth protruding piece 43d may be connected to the fitting portion 42. In this case, the entire extension portion 32 of the cover member 30 is covered by the fourth protruding piece 43d and the fitting portion 42. In FIG. 41, the fourth protruding piece 43d is connected to the discontinuous portion 42b of the fitting portion 42, but this is not limiting.

[0324] Furthermore, in the LED lighting device 3 according to the above embodiment, the fourth protruding piece 43d of the end cap 40 is connected to the second protruding piece 43b, but this is not limited thereto. Specifically, as in the end cap 40C of the LED lighting device 3C shown in FIG. 42, the fourth protruding piece 43d does not have to be connected to the second protruding piece 43b. In other words, the fourth protruding piece 43d may be separated from the second protruding piece 43b. Furthermore, as shown in FIG. 42, the fourth protruding piece 43d may be formed in a plurality of pieces scattered in an island-like pattern. Note that in FIG. 42, the fourth protruding piece 43d is formed by two plate-like members.

[0325] When the fourth protruding piece 43d is separated from the second protruding piece 43b, the fourth protruding piece 43d may be a dot-shaped protrusion protruding from the inner surface 41a of the main portion 41 of the end cap 40C, as shown in Fig. 43. As shown in Fig. 43, the fourth protruding piece 43d consisting of a protrusion is provided at a position that overlaps with the extension portion 32 of the cover member 30 in the vertical direction, similar to the fourth protruding piece 43d in the above embodiment, when the LED lighting device 3C is attached to the fixture body 2 installed on the ceiling. Also in this modification, the extension portion 32 of the cover member 30 is sandwiched in the vertical direction between the third protruding piece 43c and the fourth protruding piece 43d consisting of a protrusion.

[0326] 43, multiple fourth protruding pieces 43d each consisting of a protrusion are provided discontinuously. Specifically, two fourth protruding pieces 43d are provided between the second protruding piece 43b and the fitting portion 42. Note that the number of fourth protruding pieces 43d each consisting of a protrusion may be only one. Also, in FIG. 43, the fourth protruding piece 43d each consisting of a protrusion is not in contact with the extension portion 32, but as shown in FIG. 44, it may be in contact with the extension portion 32. The fourth protruding piece 43d is preferably provided in a position where it can come into contact with the extension portion 32. This allows the extension portion 32 to be supported by the fourth protruding piece 43d, thereby preventing deformation of the extension portion 32 due to excessive bending of the extension portion 32 and preventing a reduction in the insect-repellent effect of the extension portion 32 due to excessive bending of the extension portion 32. The extension portion 32 may be in contact with the fourth protruding piece 43d at the same time that the tip portion thereof comes into contact with the main plate portion 21 of the frame 20.

[0327] As shown in FIGS. 43 and 44 , the fourth protruding piece 43d of the end cap 40C can be discontinuous by forming it as a dot-like protrusion. This prevents the fourth protruding piece 43d from appearing as a shadow on the outer surface 41b of the main portion 41 of the end cap 40C, even if the end cap 40C is translucent. This improves the appearance of the LED lighting device 3C and the LED lighting fixture, thereby achieving an LED lighting device 3C and an LED lighting fixture with excellent design. Furthermore, by forming the fourth protruding piece 43d as a discontinuous dot-like protrusion, the material cost of the end cap 40C can be reduced compared to when the fourth protruding piece 43d is an extended fourth protruding piece.

[0328] The continuously extending fourth protruding piece 43d may be formed as a plate-like member as shown in (a) and (b) of Figure 45. In this case, as shown in (b) of Figure 45, a part of the plate-like member may be provided with a different height.

[0329] The shape of the fourth protruding piece 43d consisting of the dot-shaped protrusions can be any of the shapes shown in (c) to (k) of FIG. 45. Specifically, the fourth protruding piece 43d consisting of the dot-shaped protrusions may be columnar, as shown in (c) to (e) of FIG. 45. In this case, the fourth protruding piece 43d may be a cylinder, as shown in (c) of FIG. 45, a triangular prism, as shown in (d) of FIG. 45, a hexagonal prism, as shown in (e) of FIG. 45, or other polygonal prisms (not shown). The fourth protruding piece 43d consisting of the dot-shaped protrusions may have a curved shape, such as a hemispherical shape, as shown in (f) of FIG. 45. The fourth protruding piece 43d consisting of the dot-shaped protrusions may also be cone-shaped, as shown in (g) to (k) of FIG. 45. In this case, the fourth protruding piece 43d may be a cone as shown in (g) of Figure 45, a triangular pyramid as shown in (h) of Figure 45, a truncated cone as shown in (i) of Figure 45, a truncated pyramid as shown in (j) of Figure 45, or a truncated cone formed so that the inclination angle varies along the way as shown in (k) of Figure 45.

[0330] Furthermore, the shape of the fourth protruding piece 43d consisting of the dot-shaped protrusions may be a combination of multiple shapes shown in FIG. 45. For example, as shown in FIG. 46(a), the fourth protruding piece 43d consisting of the dot-shaped protrusions may have a shape in which a cone of the same diameter as the cylinder is stacked on top of a cylinder. By making the base portion of the fourth protruding piece 43d pillar-shaped in this way, as shown in FIG. 46(b), the fourth protruding piece 43d can support the extension portion 32, thereby effectively suppressing deformation of the extension portion 32. Furthermore, by making the tip portion of the fourth protruding piece 43d cone-shaped, as shown in FIG. 46(c), C When assembling the fourth protruding piece 43d, the extension portion 32 is attached to the end cap 40. C The guide can be used to fit the connector into a predetermined position.

[0331] 45 and 46 may be applied to inner protruding portions 43 other than the fourth protruding piece 43d. For example, the shapes shown in Fig. 45 and 46 may be applied to the first protruding piece 43a, the second protruding piece 43b, and the third protruding piece 43c.

[0332] 47, the fourth protruding piece 43d may extend from the second protruding piece 43b and contact the extension portion 32. This makes it possible to prevent the extension portion 32 from being deformed by the fourth protruding piece 43d.

[0333] Furthermore, the fourth protruding piece 43d consisting of a dot-shaped protrusion may have an elliptical shape in top view, as in the end cap 40E of the LED lighting device 3E in Fig. 48. In this case, it is preferable to form the fourth protruding piece 43d so that the major axis of the ellipse is in the vertical direction, as shown in Fig. 48. This allows the fourth protruding piece 43d to reinforce the extension portion 32 in the direction in which force is applied when it functions as a deformation prevention member, thereby effectively preventing deformation of the extension portion 32.

[0334] Next, the relationship between the cover member 30 and the outer end of the end cap 40 in the LED lighting device 3 according to this embodiment will be described with reference to Fig. 49. Fig. 49 is an enlarged view of the outer end of the LED lighting device 3 in the LED lighting fixture 1 according to the embodiment shown in Figs. 1 to 11. The dashed line in Fig. 49 indicates the outline of the end cap 40.

[0335] 49, the cover member 30 has a cover end 31a that abuts against the recess 2a of the instrument body 2. In this embodiment, the cover end 31a is a part of the outer extension portion 32a of the extension portion 32.

[0336] The edge of the cover end 31a includes a first cover edge 31a1, which is the edge on the fixture body 2 side (ceiling side), and a second cover edge 31a2, which is the edge in a direction parallel to the ceiling (direction parallel to the XY plane). The first cover edge 31a1 is a protrusion formed by a part of the ceiling side of the cover end 31a protruding. The second cover edge 31a2 is X This is the tip portion of the cover end portion 31a in the axial direction.

[0337] In this embodiment, the cover end 31a abuts against the opening edge 2a1, which is a flat surface located outside the recess 2a of the appliance body 2. Specifically, the first cover edge 31a1 of the cover end 31a abuts against the opening edge 2a1. The first cover edge 31a1 abutting against the opening edge 2a1 is X In the axial direction, it is located at the outermost position at the cover end 31a.

[0338] 49, the end cap 40 has an end edge 46 which is the end located at the outermost position of the end cap 40. The edge of the end edge 46 includes a first end edge 46a which is the edge on the fixture body 2 side (ceiling side) and a second end edge 46b which is the edge in a direction parallel to the ceiling (direction parallel to the XY plane).

[0339] When viewed from the longitudinal direction (Y-axis direction) of the cover member 30, the edge of the cover end 31a is located outside the edge of the end end 46 of the end cap 40. In other words, the edge of the cover end 31a is located outside the edge of the end end 46 in both the X-axis direction and the Z-axis direction.

[0340] Specifically, when viewed from the longitudinal direction of the cover member 30, the first cover edge 31a1 is located closer to the fixture body 2 (ceiling side) than the first end edge 46a. X In the axial direction, the first end edge 46a is located closer to the floor than the first cover edge 31a1.

[0341] When viewed from the longitudinal direction of the cover member 30, the second cover edge 31a2 is located further outward than the second end edge 46b in the Y-axis direction. X In the axial direction, it is located more inward than the first cover edge 31a1.

[0342] The effects of the LED lighting device 3 configured in this manner will be explained in comparison with a comparative LED lighting device 3y using Fig. 50 and Fig. 51. Fig. 50 is a diagram showing a state in which the cover member 30y and the end cap 40y are misaligned when combined in the LED lighting device 3y of the comparative example. Fig. 51 is a diagram showing a state in which the cover member 30y and the end cap 40y are misaligned when combined in the LED lighting device 3 of this embodiment.

[0343] In the LED lighting device 3y of the comparative example shown in FIG. 50, the cover end 31a of the cover member 30y and the end end 46 of the end cap 40y are designed to coincide with each other in both the ceiling side portion and the width direction portion.

[0344] However, in the LED lighting device 3y of the comparative example, if there is dimensional variation or assembly variation in the cover member 30y and the end cap 40y, the cover member 30y and the end cap 40y may be assembled out of alignment, resulting in a gap between the cover end 31a of the cover member 30y and the fixture body 2. As a result, the LED lighting device 3y appears to be floating above the fixture body 2, which reduces the appearance quality (design) of the LED lighting fixture. lower Furthermore, foreign matter such as insects and dust may enter the space area (insect-proof area) between the cover member 30y and the frame 20 through the gap.

[0345] For example, as shown in FIG. 50(a), if dimensional variations or assembly variations occur between the cover member 30y and the end cap 40y, causing the cover member 30y and the end cap 40y to be misaligned in the vertical direction (Z-axis direction) when assembled, and the end cap 40y becomes the outermost portion and abuts against the opening edge 2a1 of the fixture body 2, a gap will be generated between the cover end 31a of the cover member 30y and the opening edge 2a1 of the fixture body 2. This gap will exist along the longitudinal direction of the cover member 30y. This gap will degrade the appearance quality of the LED lighting fixture. Note that even if the cover member 30y is misaligned so that it becomes the outermost portion, a gap will also be generated between the end cap 40y and the opening edge 2a1 of the fixture body 2.

[0346] Furthermore, as shown in (b) of FIG. 50, when the cover end 31a of the LED lighting device 3y is brought into contact with the inclined surface 2a3 on the inner surface of the recess 2a of the fixture body 2, the cover member 30y and the end cap 40y may be displaced in the width direction ( X When the cover member 30y and the cover end 31a are assembled with a misalignment in the axial direction, if the end cap 40y becomes the outermost portion and abuts against the inclined surface portion 2a3 of the fixture body 2, a gap will be generated between the cover end 31a of the cover member 30y and the inclined surface portion 2a3 of the fixture body 2. This gap will also exist in the longitudinal direction of the cover member 30y. This will result in a decrease in the appearance quality of the LED lighting fixture. Note that even when the cover member 30y is misaligned so that it becomes the outermost portion, a gap will also be generated between the end cap 40y and the inclined surface portion 2a3 of the fixture body 2.

[0347] In contrast to this, in the LED lighting device 3 of this embodiment, as described above, the edge of the cover end 31a is located outside the edge of the end end 46 of the end cap 40. Specifically, the first cover edge 31a1 of the cover end 31a is located closer to the fixture body 2 (ceiling side) than the first end edge 46a of the end end 46, and the second cover edge 31a2 of the cover end 31a is located closer to the fixture body 2 (ceiling side) than the first end edge 46a of the end end 46. XIt is located outside the second end edge 46b of the end portion 46 in the axial direction.

[0348] With this configuration, as shown in FIG. 51(a), even if dimensional variations or assembly variations occur in the cover member 30 and the end cap 40 and the cover member 30 and the end cap 40 are misaligned in the vertical direction (Z-axis direction) when assembled, the cover end 31a of the cover member 30 is always located at the outermost edge, so the cover end 31a and the opening edge 2a1 of the fixture body 2 are maintained in contact with each other. This prevents a gap from being formed between the cover end 31a of the cover member 30 and the opening edge 2a1 of the fixture body 2. As a result, it is possible to prevent a gap between the cover end 31a of the cover member 30 and the opening edge 2a1 of the fixture body 2 from degrading the appearance quality of the LED lighting fixture. Furthermore, eliminating this gap also prevents foreign matter such as insects and dust from entering the spatial region S2 (insect-proof region) between the cover member 30 and the frame 20.

[0349] Furthermore, as shown in (b) of FIG. 51, in the case where the cover end 31a of the LED lighting device 3 is brought into contact with the inclined surface 2a3 on the inner surface of the recess 2a of the fixture body 2, the cover member 30 and the end cap 40 may be displaced in the width direction ( X Even if the cover members 30 are assembled with a misalignment in the axial direction, the cover end 31a of the cover member 30 is always the outermost part, so that the cover end 31a and the inclined surface portion 2a3 of the appliance body 2 are kept in contact with each other. and vessels This can prevent a gap from being generated between the cover end 31a of the cover member 30 and the inclined surface portion 2a3 of the fixture body 2. As a result, it is possible to prevent a gap between the cover end 31a of the cover member 30 and the opening end edge 2a1 of the fixture body 2 from deteriorating the appearance quality of the LED lighting fixture. Furthermore, by eliminating this gap, it is also possible to prevent foreign matter such as insects and dust from entering the spatial region S2 (insect-proof region) between the cover member 30 and the frame 20.

[0350] In addition, taking into consideration dimensional variations and assembly variations of the cover member 30 and the end cap 40, it is preferable that at least a portion of the thickness of the cover end 31a of the cover member 30 overlaps with the end cap 40 when viewed from the longitudinal direction (Y-axis direction) of the cover member 30.

[0351] Furthermore, in the cover member 30 of the LED lighting device 3 according to this embodiment, the extension portion 32 has the outer extension portion 32a, but this is not limited to this. Specifically, as shown in Fig. 52, the extension portion 32 may be composed of only the inner extension portion 32b. In this case, it is preferable to provide a protrusion 34 that protrudes outward at the cover end 31a, and the tip of this protrusion 34 should be the second cover edge 31a2. The protrusion 34 is a rib that extends in the Y-axis direction.

[0352] As a result, as shown in FIG. 51(b), the cover end 31a is brought into contact with the inclined surface of the instrument body 2. 2a3 In the case of a configuration in which the protrusion 34 of the cover end 31a abuts against the fixture body 2, even if there are dimensional variations or assembly variations in the cover member 30 and the end cap 40, the protrusion 34 of the cover end 31a can always abut against the fixture body 2. Note that, in Fig. 52, the protrusion 34 is provided at the connecting portion between the main part 31 and the mounting part 33, but this is not limitative.

[0353] Furthermore, the cross-sectional shape of the main portion 31 of the cover member 30 is not limited to a curved shape. Specifically, as shown in Fig. 53, the cross-sectional shape of the main portion 31 may be polygonal. In this case, too, as shown in Fig. 51(b), the cover end 31a may be positioned on the inclined surface portion of the appliance body 2. 2a3 In the case of a configuration in which the protrusion 34 of the cover end 31a abuts against the fixture body 2, even if there is dimensional variation or assembly variation in the cover member 30 and the end cap 40, the protrusion 34 of the cover end 31a can always abut against the fixture body 2. Note that in Fig. 53, the protrusion 34 that becomes the cover end 31a is provided on the side surface of the main part 31, but this is not limiting.

[0354] The protrusion 34 of the cover end 31a may be formed by changing the thickness of a portion of the cover member 30, as shown in FIG. 54(a). Alternatively, one or more protrusions may be formed on one or both of the extension portion 32 and the main portion 31, as shown in FIGS. 54(b) to 54(d). The protrusion 34 may be shaped to protrude obliquely, as shown in FIG. 54(b). Alternatively, the protrusion 34 may be formed only on the extension portion 32, as shown in FIG. 54(c), or may be formed on both the extension portion 32 and the main portion 31, as shown in FIG. 54(d). In addition to the protrusion 34, a protrusion 34a (rib) may be provided on the extension portion 32, as shown in FIG. 54(e). The protrusion 34a is a rib for reducing noise generated by contact between the outer extension portion 32a of the extension portion 32 and the opening edge 2a1 of the appliance body 2. The protrusion 34 can also reduce noise that occurs when the outer extension portion 32a of the extension portion 32 comes into contact with the opening edge 2a1 of the appliance body 2. In other words, providing the protrusion 34 not only eliminates gaps and improves the appearance quality, but also reduces noise.

[0355] (Variation) Various modifications of the LED lighting device 3 according to the above embodiment will be described below.

[0356] In the LED lighting device 3 according to the above embodiment, the inner protrusion 43 of the end cap 40 is configured to have four protrusions: a first protrusion 43a, a second protrusion 43b, a third protrusion 43c, and a fourth protrusion 43d, but this is not limited to this.

[0357] For example, like an end cap 40F of an LED lighting device 3F shown in Fig. 55, an inner protruding portion 43F may be configured to have three protruding pieces: a first protruding piece 43a, a second protruding piece 43b, and a third protruding piece 43c. 4 Projecting piece 43 d The end cap 40F may not have any of the above.

[0358] 56, the inner protruding portion 43G may be configured to have two protruding pieces, a first protruding piece 43a and a third protruding piece 43c. In other words, the end cap 40G may not have the second protruding piece 43b and the fourth protruding piece 43d.

[0359] 57, the inner protrusion 43H may be configured with a wide, block-shaped first protrusion 43aH, a third protrusion 43c, and a fourth protrusion 43d. Because the first protrusion 43aH in this modification is wide, it also functions as the second protrusion 43b in the above embodiment. Therefore, the first protrusion 43aH in this modification not only faces the main plate 21 vertically but also faces the extension 32 horizontally. As in the end cap 40H' of the LED lighting device 3H' shown in FIG. 58, the inner protrusion 43H' may be configured with a wide first protrusion 43aH and a third protrusion 43c without the fourth protrusion 43d.

[0360] Furthermore, like an end cap 40I of an LED lighting device 3I shown in Fig. 59, the inner protrusion 43I may be configured to have a rectangular frame-shaped protrusion made up of a first protrusion 43aI and a second protrusion 43b, a third protrusion 43c, and a fourth protrusion 43d. Note that, like an end cap 40I' of an LED lighting device 3I' shown in Fig. 60, the inner protrusion 43I' may be configured to have a rectangular frame-shaped protrusion made up of a first protrusion 43aI and a second protrusion 43b, and a third protrusion 43c, without having the fourth protrusion 43d.

[0361] 61, the inner protruding portion 43J may be configured to have three protruding pieces: a first protruding piece 43a, a second protruding piece 43b, and a fourth protruding piece 43d. In other words, the end cap 40J may not have a third protruding piece 43c.

[0362] 62, the third protruding piece 43cK of the inner protruding portion 43K may be present across the entire width of the spatial region S1 surrounded by the main plate portion 21 of the frame 20 and the extension portion 32 of the cover member 30. In other words, the third protruding piece 43cK X Axial width and spatial area S1 X The width in the axial direction may be approximately the same.

[0363] Also, like the end cap 40L of the LED lighting device 3L shown in Fig. 63(a), the inner protruding portion 43L may be composed of a first protruding piece 43a, a second protruding piece 43b, a frame-shaped third protruding piece 43cL, and a fourth protruding piece 43d. The third protruding piece 43cL is configured to be surrounded by a plurality of plate surface portions. As shown in Fig. 63(b), the third protruding piece 43cL in this modification is , cut The third protruding piece 43cL has a cylindrical frame shape with a mountain-shaped surface, and has an outer shape that follows the inner shape of the spatial region S1 surrounded by the main plate portion 21 of the frame 20 and the extension portion 32 of the cover member 30. Although not shown, an elastic member such as an elastomer may be provided to surround the third protruding piece 43cL. Furthermore, as shown in FIG. 63(c), the third protruding piece 43cL may not be frame-shaped, but may be divided into multiple pieces. For example, the third protruding piece 43cL may be composed of multiple disconnected plate pieces.

[0364] Furthermore, in the LED lighting device 3 according to the above embodiment, the fitting portion 42 of the end cap 40 includes not only the first continuous portion 42a and the second continuous portion 42c that are continuously formed along the outer peripheral edge of the curved portion of the main portion 41, but also the discontinuous portion 42b that is not continuously formed along the outer peripheral edge of the curved portion of the main portion 41. However, this is not limited to this. For example, as in the end cap 40M of an LED lighting device 3M shown in FIG. 64, the fitting portion 42M may not include the discontinuous portion that is not continuously formed along the outer peripheral edge of the curved portion of the main portion 41, but may instead be composed solely of a continuous portion that is continuously formed along the outer peripheral edge of the curved portion of the main portion 41. In this case, as in the end cap 40M' of an LED lighting device 3M' shown in FIG. 65, the fitting portion 42M', which is composed solely of a continuous portion, may be divided into multiple portions.

[0365] Furthermore, in the LED lighting device 3 according to the above embodiment, the frame 20 has the protrusion 20b, but this is not limited to this. For example, as in an LED lighting device 3N shown in Fig. 66, the frame 20N may be composed only of a main plate 21 and side plate portions 24. In this case, as shown in Fig. 66, the extension portion 32N of the cover member 30N may be composed only of a flat plate parallel to the X-axis direction and may be in surface contact with the main plate portion 21.

[0366] 66, a cover member 30N having an extension portion 32N made of only a flat plate is attached to a frame 20N having no protrusion 20b, but this is not limiting. Specifically, as in an LED lighting device 30 shown in FIG. 67, a cover member 30 having an arch-shaped extension portion 32 used in the above embodiment may be attached to a frame 20N having no protrusion 20b.

[0367] 68, a cover member 30P having an extension portion 32P made up of only an inclined plate inclined relative to the main plate portion 21 may be attached to a frame 20N without a protrusion 20b. In this case, the end cap 40P Inner protrusion 43PIn the example shown in FIG. 68, the end of the first protruding piece 43aP may overlap with the tip of the extension portion 32P. The end of the first protruding piece 43aP is formed in a triangular shape. The second elastic portion 52P of the elastic member 50P is located between the end of the first protruding piece 43aP and the tip of the extension portion 32P. In FIG. 68, the end cap 40P does not have the third protruding piece 43c and the fourth protruding piece 43d.

[0368] Furthermore, when using a cover member 30P having an extension portion 32P formed only by an inclined plate, the thickness of the second elastic portion 52Q of the elastic member 50Q may be varied, as in the LED lighting device 3Q shown in FIG. 69. For example, as shown in FIG. 69, the second elastic portion 52Q may be triangular. In this manner, the thickness of the second elastic portion 52Q does not have to be uniform. Note that in FIG. 69, the end cap 40Q is not provided with the third protruding piece 43c and the fourth protruding piece 43d.

[0369] In the LED lighting device 3 according to the above embodiment, the second elastic portion 52, which is an elastic body provided between the second protruding piece 43b of the end cap 40 and the extension portion 32 of the cover member 30, is part of the elastic member 50 attached to the end cap 40. However, this is not limited to this. For example, as in the LED lighting device 3R shown in FIG. 70, an elastic piece 35 located between the second protruding piece 43b of the end cap 40R and the extension portion 32 of the cover member 30R may be attached to the extension portion 32 of the cover member 30R. The elastic piece 35 inserted between the second protruding piece 43b and the extension portion 32 is an elastic body that elastically deforms and has the same function as the second elastic portion 52 of the elastic member 50 in the above embodiment. The elastic piece 35 is made of, for example, an elastomer. In this modification, the elastic member 50R of the end cap 40R does not have the second elastic portion 52 and is composed only of the first elastic portion 51.

[0370] 71, an elastically deformable elastic member 36 may be provided on the end surface of the tip of the extension portion 32 of the cover member 30S. In this case, the elastic member 36 serves as the abutment portion 32c and is pressed against the frame 20. As a result, when the cover member 30S is attached to the frame 20, the elastic deformation of the elastic member 36 is added to the deflection of the extension portion 32, thereby improving the adhesion between the extension portion 32 and the frame 20. As an example, the elastic member 36 is an elastic body made of a resin material or the like, such as an elastomer.

[0371] It should be noted that, as long as the elastic member 36 is provided, the extension portion 32 does not need to bend. In other words, when the cover member 30 is attached to the frame 20, only the elastic member 36 may be elastically deformed without the extension portion 32 being elastically deformed (i.e., without being bent). In this case as well, the elastic member 36 provided on the extension portion 32 can be kept in contact with the frame 20, thereby preventing foreign matter such as insects and dust from entering the spatial region S2 between the cover member 30 and the frame 20.

[0372] 72, an LED lighting device 3T may have a structure in which an elastic member 36T provided on the end surface of the tip of the extension portion 32 of a cover member 30T has an elastic piece 35T. The elastic member 36T in this modification is configured by integrating the elastic member 36 in FIG. 71 and the elastic piece 35 in FIG. 70. Therefore, the LED lighting device 3T in this modification can achieve the effects of both the LED lighting device 3R shown in FIG. 70 and the LED lighting device 3S shown in FIG. 71. In this modification, the extension portion 32 does not need to bend as long as the elastic member 36T is provided.

[0373] When the elastic member 36 is provided on the end surface of the distal end of the extension portion 32 as in the LED lighting device 3S in FIG. 71, by making the width of the elastic member 36 larger than the width of the distal end of the extension portion 32 as shown in FIG. 73(a), the elastic member 36 can be stabilized and made less likely to collapse. Furthermore, by making the width of the distal end of the elastic member 36 smaller than the width of the distal end of the extension portion 32 as shown in FIG. 73(b) and (c), the elastic member 36 can be easily bent while ensuring a sufficient allowance for the elastic member 36 to be crushed. Furthermore, by tapering the distal end of the elastic member 36 as shown in FIG. 73(d) and (e), the elastic member 36 can be easily tilted to the left or right when the elastic member 36 presses down on the frame 20 while ensuring a sufficient allowance for the elastic member 36 to be crushed. Furthermore, by tilting the distal end of the elastic member 36 in advance as shown in FIG. 73(f) to (h), the direction in which the elastic member 36 will collapse when the elastic member 36 presses down on the frame 20 can be determined. That is, it is possible to specify the direction in which the elastic member 36 tilts. The structure of the elastic member 36 shown in (a) to (h) of Figure 73 can also be applied to the elastic member 36T of Figure 72.

[0374] Furthermore, in the LED lighting device 3 according to the above embodiment, the discontinuous portion 42b of the fitting portion 42 of the end cap 40 is recessed so as to be bent at a right angle, but this is not limited thereto. For example, as in the end cap 40 shown in FIG. 74, the discontinuous portion 42b of the fitting portion 42 may be recessed so as to have an inclined portion 42b1. For example, the fitting portion 42 may be recessed so as to be bent in a V-shape. In this way, by providing the inclined portion 42b1 in the discontinuous portion 42b, the adhesive 80 that has flowed into the discontinuous portion 42b can be prevented from flowing onto the mounting surface 41c. In other words, the adhesive 80 can be prevented from flowing into the portion that should be the non-bonding region P2.

[0375] Alternatively, as in the end cap 40 shown in FIG. 75, the discontinuous portion 42b of the fitting portion 42 may be recessed so as to be curved. For example, the fitting portion 42 may be recessed so as to be bent in an arc. By curving the discontinuous portion 42b in this way, the adhesive 80 that flows into the discontinuous portion 42b can be collected in the discontinuous portion 42b, thereby preventing the adhesive 80 from flowing onto the mounting surface 41c. In other words, the adhesive 80 can be prevented from flowing into the area that should be the non-bonding region P2.

[0376] Furthermore, as in the end cap 40 shown in FIG. 76 , the discontinuous portion 42b of the fitted portion 42 may extend linearly from the first continuous portion 42a toward the linear portion of the main portion 41 without being connected to the second continuous portion 42c. Alternatively, as in the end cap 40 shown in FIG. 77 , the discontinuous portion 42b of the fitted portion 42 may be a gap (spatial region) between the first continuous portion 42a and the second continuous portion 42c. Thus, according to the end cap 40 shown in FIGS. 76 and 77 , a portion of the fitted portion 42 is separated and cut off. This prevents the adhesive 80 from flowing into the non-bonding region P2. Furthermore, by forming a solid discontinuous portion 42b as shown in FIG. 76 , the adhesive 80 can be guided and restricted along the discontinuous portion 42b, thereby preventing the adhesive 80 from flowing into the non-bonding region P2 more effectively than with a non-solid spatial region discontinuous portion 42b ( FIG. 77 ).

[0377] 78, a protrusion 42a1 may be provided on the edge of the first continuous portion 42a of the fitting portion 42. Alternatively, as in the end cap 40 shown in FIG. 79, a small recess 42a2 may be provided on the end of the first continuous portion 42a of the fitting portion 42. This not only prevents the adhesive 80 from flowing into the discontinuous portion 42b and the second continuous portion 42c corresponding to the non-fixed region P2, but also allows the adhesive 80 to pool at the end of the first continuous portion 42a corresponding to the fixed region P1, thereby increasing the adhesive strength of the end of the fixed region P1. This prevents the widthwise end of the end cap 40 from peeling off from the main portion 31 of the cover member 30 when the mounting portion 33 of the cover member 30 is expanded and attached to the frame 20. Furthermore, as shown in FIG. 78, providing the protrusion 42a1 can also accommodate dimensional variations between the cover member 30 and the end cap 40. Although not shown, a protrusion 42a1 may be provided on the edge of the first continuous portion 42a of the fitting portion 42, and a recess 42a2 may be provided above the protrusion 42a1.

[0378] In addition, the first elastic portion 51 of the elastic member 50 in the LED lighting device 3 according to the above embodiment is attached to the flat portion of the linear portion of the main portion 41 of the end cap 40 as shown in (a) of Fig. 80, but is not limited to this. Specifically, as shown in (b) of Fig. 80, the first elastic portion 51 of the elastic member 50 is attached to the flat portion of the linear portion of the main portion 41 of the end cap 40U so as to engage with the convex portion 47a and the concave portion 47b provided on the linear portion of the main portion 41 of the end cap 40U. U In this manner, the end cap 40 U By providing the protrusion 47a and the recess 47b in the end cap 40 U Since the contact area between the end cap 40 and the first elastic portion 51 is increased, U This increases the bonding strength between the end cap 40 and the elastic member 50. U Furthermore, by providing the recess 47b, the end cap 40 can be prevented from coming off. UThe recessed portion 47b is recessed, and therefore the volume of the first elastic portion 51 that fits into the recessed portion 47b can be increased. This improves the strength of the elastic member 50 itself. In addition, in FIG. 80(b), the recessed portion 47b is formed in an undercut shape. This allows the end cap 40 U The contact area between the end cap 40 and the first elastic portion 51 is further increased. U Not only can the bonding strength between the end cap 40 and the elastic member 50 be further increased, but also the structure is such that the first elastic portion 51 is caught in the undercut portion, so that even if the elastic member 50 is pulled or rubbed, the elastic member 50 does not move to the end cap 40. U This can effectively prevent deviation from the target position.

[0379] As shown in FIG. 80(b), in the elastic member 50 attached to the end cap 40U, the first elastic portion 51 has a body portion 51a, which is a solid portion, and a plate-like (pleated) elastic piece 51b. By providing the body portion 51a to the first elastic portion 51, the first elastic portion 51 can be made to have a rigidity and be less likely to deform. On the other hand, the elastic piece 51b is a thin plate-like piece, and therefore has a shape that easily collapses when pressed down. Therefore, the end cap 40 having the elastic member 50 U When the cover member 30 to which the elastic piece 51b is attached is fitted into the frame 20, the elastic piece 51b is pushed by the main plate portion 21 of the frame 20 and falls down. U There may be dimensional variations or assembly variations in the end cap 40 U Even if variations occur in the gap (see FIG. 5) between the elastic piece 51b and the main plate portion 21 of the frame 20, the variations in the gap can be absorbed by the elastic piece 51b collapsing.

[0380] Moreover, the first elastic portion 51 not only has the elastic piece 51b that is easily deformed but also has the body portion 51a that is difficult to deform. UThe gap between the first protruding piece 43a and the main plate portion 21 of the frame 20 can be reliably filled by the first elastic portion 51. This effectively prevents foreign matter such as insects and dust from entering the spatial region S2 (insect-proof region) between the cover member 30 and the frame 20.

[0381] Also, as shown in FIG. 80(b), the end cap 40 U A step downward may be formed on the outer surface 43a1 (the upper surface in the figure) of the first protruding piece 43a facing the frame 20. This allows the elastic piece 51b to escape to this step when it is pushed by the main plate portion 21 of the frame 20 and falls over. As a result, the contact pressure between the main plate portion 21 and the elastic piece 51b can be reduced, thereby reducing abnormal noise caused by contact between the main plate portion 21 and the elastic piece 51b.

[0382] Such a structure of the first elastic portion 51 and the first protruding piece 43a is not only possessed by the end cap 40U shown in Fig. 80(b), but also by the end cap 40 shown in Fig. 80(a). That is, also in the LED lighting device 3 in the above embodiment, the first elastic portion 51 of the elastic member 50 has a body portion 51a and an elastic piece 51b, and a step is formed on the outer surface 43a1 of the first protruding piece 43a of the end cap 40.

[0383] Furthermore, although the main portion 41 of the end cap 40 of the LED lighting device 3 according to the above embodiment has a parabolic shape that is curved in both the X-axis direction and the Y-axis direction, this is not limiting. For example, as shown in FIG. 81(a), the main portion 41 of the end cap 40 may be a flat plate that is neither inclined nor curved. For example, the main portion 41 may be a vertical plate parallel to the XZ plane. In this case, the main portion 41 is oriented to stand perpendicular to the main plate portion 21 of the frame 20. As shown in FIG. 81(b), the main portion 41 of the end cap 40 may be an inclined plate that is inclined so that the portion of the cover member 30 facing the main portion 31 protrudes outward. Alternatively, as shown in FIG. 81(c), the main portion 41 of the end cap 40 may be a curved plate that is curved so that the portion of the cover member 30 facing the main portion 31 protrudes outward (the portion facing the ceiling recedes inward). 81(d), the main portion 41 of the end cap 40 may be an inclined plate that is inclined so that the portion of the cover member 30 facing the main portion 31 protrudes inward (the portion on the ceiling side recedes outward), or as shown in FIG. 81(e), the main portion 41 of the end cap 40 may be a curved plate that is curved so that the portion of the cover member 30 facing the main portion 31 protrudes inward. The main portion 41 of the end cap 40 may be formed so as to protrude inward midway in the Z-axis direction, as shown in FIG. 81(f), or, although not shown, may be formed so as to protrude outward midway in the Z-axis direction. In FIGS. 81(a) to 81(f), the main portion 41 does not have to be curved along the X-axis direction, but may be curved along the X-axis direction. That is, the main portion 41 may be curved or inclined in only one axial direction, or may be curved or inclined in each of the two axial directions.

[0384] As shown in (g) and (h) of FIG. 81, the main portion 41 of the end cap 40 may have uneven thickness portions with partially varying thicknesses. In this case, the uneven thickness portions of the thickened main portion 41 may have a rectangular cross-sectional shape as shown in (g) of FIG. 81, a triangular cross-sectional shape as shown in (h) of FIG. 81, or other shapes. As shown in (i) of FIG. 81, prisms may be formed on the inner surface of the main portion 41 of the end cap 40. This makes it possible to control the distribution of light passing through the main portion 41 when the main portion 41 is translucent. The prisms may also be formed on the outer surface of the main portion 41.

[0385] Furthermore, although the end cap 40 of the LED lighting device 3 according to the above embodiment does not have a portion that extends beyond the opening edge 2a2 (fixture body end) of the fixture body 2 in the Z-axis direction, as shown in FIGS. 82(a) and 82(b), the end cap 40 may have a fixture-side protrusion 49 as a portion that extends beyond the opening edge 2a2 of the fixture body 2 in the Z-axis direction. The fixture-side protrusion 49 is provided to protrude from a straight portion that is the end of the main portion 41 of the end cap 40 on the fixture body 2 side (ceiling side). The fixture-side protrusion 49 is provided, for example, between a pair of extension portions 32 of the cover member 30. The fixture-side protrusion 49 is connected to the first protrusion piece 43a of the inner protrusion portion 43. In this case, the fixture-side protrusion 49 may be a part of the first protrusion piece 43a. The fixture-side protrusion 49 and the first protrusion piece 43a may be provided separately. The instrument side protrusion 49 may extend only in the Z-axis direction as shown in Fig. 82(a), or may be formed so that its tip is bent so as to extend in the Z-axis direction as shown in Fig. 82(b). The instrument side protrusion 49 may be formed in an L-shape so that its tip extends in the Y-axis direction as shown in Fig. 82(c), or may be formed so that its tip is bent so as to extend in the Y-axis direction as shown in Fig. 82(d).

[0386] In the end cap 40 of the LED lighting device 3 according to the embodiment, as shown in (a) of FIG. 80, the inner surface 43a2 opposite to the outer surface 43a1 of the first protruding piece 43a is a tapered surface so that the first protruding piece 43a is tapered, but this is not limiting. For example, as shown in (a) of FIG. a As shown in FIG. 83(b), the inner surface 43a2 of the first protruding piece 43a may be a flat surface without inclination. Alternatively, as shown in FIG. 83(b), the outer surface 43a1 of the first protruding piece 43a may be a tapered surface. This allows the first protruding piece 43a to function as a guide with the frame 20, resulting in smooth thermal contraction. Alternatively, as shown in FIG. 83(c), the tip of the outer surface 43a1 of the first protruding piece 43a may be rounded to form a curved surface, or as shown in FIG. 83(d), the tips of the outer surface 43a1 and the inner surface 43a2 of the first protruding piece 43a may be rounded to form a curved surface. In this case, the first protruding piece 43a functions as a guide with the frame 20.

[0387] Although not shown, not only the first protruding piece 43a but also the second protruding piece 43b, the third protruding piece 43c, and the fourth protruding piece 43d may have tapered outer surfaces or curved tips. In this case, the second protruding piece 43b, the third protruding piece 43c, and the fourth protruding piece 43d function as guides that guide the extension portion 32 of the cover member 30 to a predetermined position in the end cap 40, making it easy to fit the end cap 40 and the cover member 30 together.

[0388] Furthermore, the shape of the elastic member 50 of the LED lighting device 3 according to the above embodiment is not limited to that shown in Fig. 5. For example, in the above embodiment, the first elastic portion 51 of the elastic member 50 is inclined so as to tilt toward the inside of the cover member 30. However, as shown in Fig. 84(a), the first elastic portion 51 of the elastic member 50 may be inclined so as to tilt toward the outside of the cover member 30. By inclining the first elastic portion 51, the inclination direction of the first elastic portion 51 can be intentionally determined. This makes it possible to prevent the first elastic portion 51 from protruding from the first protruding piece 43a. Furthermore, the first elastic portion 51 of the elastic member 50 may have a T-shaped cross section and may be composed of a plate-like first flat plate portion and a plate-like second flat plate portion erected on the first flat plate portion, as shown in Fig. 84(b), or may be composed of a plate-like first portion and a plate-like second portion with a triangular cross section provided on the first portion, as shown in Fig. 84(c), or may be a thick block body with a rectangular cross section, as shown in Fig. 84(d). Although not shown, the first elastic portion 51 of the elastic member 50 may also be hemispherical.

[0389] Furthermore, as shown in Figure 85(a), the first elastic portion 51 of the elastic member 50 may be composed of only a plate-like (pleated) elastic piece, or may be a triangular prism as shown in Figure 85(b). In this case, as shown in Figure 85(c), the two base angles of the first elastic portion 51 having a triangular cross section may be acute angles, or as shown in Figure 85(d), one of the two base angles of the first elastic portion 51 having a triangular cross section may be obtuse. Note that in Figure 85(d), the apex of the apex angle of the first elastic portion 51 having a triangular cross section protrudes into the inside of the cover member 30 from the contact portion between the first elastic portion 51 and the first protruding piece 43a, but it may also protrude outward.

[0390] Alternatively, end caps 40V having shapes shown in Figures 86 to 88 may be used. Figure 86 is a perspective view of end cap 40V as seen from the outer surface 41b side, and Figure 87 is a perspective view of end cap 40V as seen from the inner surface 41a side. Figure 88 is an enlarged perspective view of the end of end cap 40V.

[0391] In the end cap 40V of this modification, the fitting portion 42V does not have a discontinuous portion that is not formed continuously along the shape of the outer peripheral edge of the curved portion of the main portion 41, but is composed only of a continuous portion that is formed continuously along the shape of the outer peripheral edge of the curved portion of the main portion 41. Also, as shown in FIG. 88 , the end cap 40V of this modification has a groove 48 formed near the end edge 46. The groove 48 is formed by cutting out a straight portion that is the edge of the ceiling-side end of the main portion 41 to create a step. The groove 48 is also formed at the end of the fitting portion 42V. By forming such a groove 48, when the end cap 40V and the cover member 30 are fixed with the adhesive 80, the adhesive 80 flowing along the outer wall surface of the fitting portion 42V can be guided away by the groove 48. This prevents the adhesive 80 from flowing around the vicinity of the inner extension portion 32b of the extension portion 32, even though the fitting portion 42V does not have a discontinuous portion and is composed only of a continuous portion.

[0392] In the LED lighting device 3 according to the above embodiment, the inner extension portion 32b of the extension portion 32 of the cover member 30 extends beyond the protruding portion 20b of the frame 20. However, this is not limited to this. For example, as in the LED lighting device 3W shown in FIG. 89, the inner extension portion 32b of the extension portion 32W of the cover member 30W may extend so as not to exceed the protruding portion 20b of the frame 20W. In FIG. 89, the inner extension portion 32b of the extension portion 32W extends partway into the horizontal plate portion 23W of the frame 20W. This reduces the material cost of the cover member 30W. Furthermore, forming the frame 20W from a white (highly reflective) material improves light extraction efficiency. In this modification, the horizontal plate portion 23W of the frame 20W is composed of an inclined plate portion and a parallel plate portion.

[0393] 89 may be applied to the frame 20 of the above embodiment, as in an LED lighting device 3X shown in Fig. 90. In this case as well, the inner extension portion 32b of the extension portion 32W of the cover member 30W extends so as not to exceed the protrusion 20b of the frame 20.

[0394] Furthermore, in the LED lighting device 3 according to the above embodiment, the extension portion 32 of the cover member 30 extends from the main portion 31, but this is not limiting. For example, the extension portion 32 or the inner extension portion 32b may extend from the positions of points A1 to A5 of the cover member 30 shown in FIG. 91(a) toward the light source unit 10. Note that point A1 is a point located on the main portion 31, point A2 is a point at the portion where the main portion 31 and the outer extension portion 32a are joined, point A3 is a point located on the outer extension portion 32a, point A4 is a point at the portion where the attachment portion 33 and the outer extension portion 32a are joined, and point A5 is a point located on the attachment portion 33. Furthermore, the extension portion 32 or the inner extension portion 32b may extend from the positions of points B1 to B3 of the cover member 30a shown in FIG. 91(b) toward the light source unit 10. The cover member 30a is composed of a main portion 31 and an attachment portion 33, and does not have an outer extension portion 32a. Point B1 is a point located on the main portion 31, point B2 is a point where the main portion 31 and the attachment portion 33 are joined, and point B3 is a point located on the attachment portion 33.

[0395] For example, when a cover member 30 having the shape shown in Fig. 91(a) is used, the inner extension portion 32b may extend from the main portion 31 instead of the outer extension portion 32a as shown in Fig. 92(a), or the inner extension portion 32b may extend from the middle of the outer extension portion 32a as shown in Fig. 92(b), or the main portion 31 may be connected to the middle of the extension portion 32 as shown in Fig. 92(c), or the outer extension portion 32a may be connected to the middle of the attachment portion 33 as shown in Fig. 92(d). Furthermore, when a cover member 30a having the shape shown in Fig. 91(b) is used, the extension portion 32 may extend at an angle from the main portion 31 as shown in Fig. 93(a), or may extend in an arch shape from the main portion 31 as shown in Fig. 93(b).

[0396] In Figures 92 and 93, the parts where the extension portion 32 or the inner extension portion 32b is directly connected are more susceptible to the effects when the extension portion 32 or the inner extension portion 32b is deformed, while the parts where the extension portion 32 or the inner extension portion 32b is not directly connected (for example, when connected via another part) are less susceptible to the effects when the extension portion 32 or the inner extension portion 32b is deformed.

[0397] 92(a), (c), and (d) and 93(a) and (b), the degree of influence on the main part 31 is large when the extension part 32 or the inner extension part 32b is deformed. On the other hand, in FIG. 92(b), the degree of influence on the main part 31 is small when the extension part 32 or the inner extension part 32b is deformed.

[0398] 92(d) and 93(a) and (b), the degree of influence on the mounting portion 33 is large when the extension portion 32 or the inner extension portion 32b is deformed. On the other hand, in FIG. 92(a) to (c), the degree of influence on the mounting portion 33 is small when the extension portion 32 or the inner extension portion 32b is deformed.

[0399] Therefore, in the structure of FIG. 92(b), when the extension portion 32 or the inner extension portion 32b is bent, the influence on both the main portion 31 and the attachment portion 33 is small.

[0400] Furthermore, in the LED lighting device 3 according to the above embodiment, a convex portion and / or a concave portion may be formed on the main plate portion 21 of the frame 20. Specifically, as in the LED lighting device 3Y shown in FIG. 94, a convex portion 21c protruding toward the floor may be formed on the main plate portion 21 of the frame 20Y. The convex portion 21c is a convex protrusion and can be formed, for example, by pressing the main plate portion 21. The convex portion 21c may be, for example, a bead, but is not limited thereto. Specifically, the convex portion 21c may be a dowel such as a half-moon dowel, or a bridge. The convex portion 21c may be a ridge formed over the entire length in the Y-axis direction, or multiple ridges may be formed intermittently along the Y-axis direction. Note that the cross-sectional shape of the convex portion 21c formed by pressing is, for example, rectangular, but is not limited thereto. For example, the cross-sectional shape of the convex portion 21c may be an arc shape, a trapezoidal shape, a triangle, a U-shape, or the like. 94, the protrusion 21c is formed in the spatial region S1. Therefore, the third plate portion 32b3 of the extension portion 32 is located between the substrate 11 of the light source unit 10 and the protrusion 21c. In this way, by forming the protrusion 21c on the main plate portion 21, the strength of the frame 20Y can be improved. Moreover, by forming the protrusion 21c on the main plate portion 21, it is possible to prevent the extension portion 32 from coming off and to prevent the extension portion 32 from deforming. Furthermore, by forming the protrusion 21c in the spatial region S1, a maze structure can be created, which further prevents insects from entering the spatial region S2.

[0401] 94, the protrusion 21c is formed in the spatial region S1, but this is not limiting. For example, as in an LED lighting device 3Y shown in FIG. 95, the protrusion 21c formed on the main plate 21 of the frame 20Y may be formed between the substrate 11 of the light source unit 10 and the third plate 32b3 of the extension portion 32. This can improve the strength of the frame 20Y.

[0402] 94 and 95, only one protrusion 21c is formed on the main plate 21, but this is not limited thereto. For example, as in an LED lighting device 3Y shown in FIG. 96, two protrusions 21c may be formed on the main plate 21 of the frame 20Y. In this case, the third plate 32b3, which is the tip of the extension 32, may be inserted between the two protrusions 21c. In other words, the tip of the extension 32 may be positioned so as to be sandwiched between the two protrusions 21c. In this way, forming two protrusions 21c on the main plate 21 can further improve the strength of the frame 20Y. Moreover, inserting the tip of the extension 32 between the two protrusions 21c can prevent the extension 32 from coming off and also prevent the extension 32 from deforming. Furthermore, by forming one of the two protrusions 21c in the spatial region S1 and the other of the two protrusions 21c outside the spatial region S1, an even more complex maze structure can be created, thereby further preventing insects from entering the spatial region S2.

[0403] 94 to 96, the main plate 21 has the protrusion 21c, but this is not limiting. For example, as in the LED lighting device 3Y shown in FIG. 97, the main plate 21 of the frame 20Y may have a recess 21d recessed toward the ceiling. The recess 21d can be formed, for example, by pressing the main plate 21, similar to the protrusion 21c. The recess 21d may be a protrusion that protrudes toward the ceiling, such as a bead, but is not limited thereto. The recess 21d may also be a groove formed over the entire length in the Y-axis direction, or multiple recesses may be formed intermittently along the Y-axis direction. The cross-sectional shape of the recess 21d formed by pressing is, for example, rectangular, but is not limited thereto. For example, the cross-sectional shape of the recess 21d may be an arc shape, a trapezoidal shape, a triangle, a U-shape, or the like. In FIG. 97, the third plate 32b3, which is the tip of the extension 32, is inserted into the recess 21d. In this way, the strength of the frame 20Y can be improved by forming the recess 21d in the main plate portion 21. Moreover, by inserting the tip end of the extension portion 32 into the recess 21d, it is possible to prevent the extension portion 32 from coming off and also to prevent the extension portion 32 from being deformed.

[0404] As shown in FIG. 98, the main plate 21 of the frame 20Y may have a protrusion 21c and a recess 21d formed adjacent to each other. By forming the protrusion 21c and the recess 21d on the main plate 21, the strength of the frame 20Y can be further improved. In this case, the third plate 32b3, which is the tip of the extension 32, may be inserted into the recess 21d. This prevents the extension 32 from coming off and from deforming. Furthermore, forming the protrusion 21c in the spatial region S1 creates a maze structure. This prevents insects from entering the spatial region S2.

[0405] Furthermore, when using a frame 20Y (as shown in FIG. 96) having two protrusions 21c formed on the main plate 21, such as the LED lighting device 3Y shown in FIG. 99, the extension 32Y of the cover member 30Y may be provided with not only the third plate 32b3 but also a fourth plate 32b4, with the third plate 32b3 inserted between the substrate 11 and the protrusion 21c, and the fourth plate 32b4 inserted between the two protrusions 21c. This configuration improves the strength of the frame 20Y, prevents the extension 32Y from coming off, and prevents deformation of the extension 32Y. Furthermore, by forming one of the two protrusions 21c in the spatial region S1, a maze structure can be created. This prevents insects from entering the spatial region S2.

[0406] Furthermore, when using a frame 20Y having two protrusions 21c formed on the main plate 21, as in the LED lighting device 3Y shown in FIG. 100, the extension 32Y of the cover member 30Y may be extended further from the third plate 32b3 to form an extension 32d on the extension 32Y, and the third plate 32b3 may be inserted between the two protrusions 21c. This configuration improves the strength of the frame 20Y, prevents the extension 32Y from coming off, and prevents deformation of the extension 32Y. Furthermore, by forming one of the two protrusions 21c in the space region S1, a maze structure can be created. This prevents insects from entering the space region S2.

[0407] Alternatively, a frame 20Y having three protrusions 21c formed on the main plate 21 may be used, as in the LED lighting device 3Y shown in FIG. 101. In this case, the extension 32Y of the cover member 30Y may be extended further from the third plate 32b3 to form an extension 32d on the extension 32Y, and a fourth plate 32b4 may be formed on the extension 32Y, with the third plate 32b3 and the fourth plate 32b4 inserted between adjacent two protrusions 21c. This configuration further improves the strength of the frame 20Y, prevents the extension 32Y from coming off the frame 20Y, and prevents deformation of the extension 32Y. Furthermore, by forming two of the three protrusions 21c in the spatial region S1, a more complex maze structure can be created. This prevents insects from entering the spatial region S2.

[0408] Furthermore, when using a frame 20Y (as shown in Figure 94) in which a convex portion 21c is formed on the main plate portion 21, as in the LED lighting device 3Y shown in Figure 102, the tip surface of the extension portion 32 of the cover member 30 may be brought into contact with the top surface of the convex portion 21c.

[0409] Furthermore, when using a frame 20Y (as in FIG. 97) in which a recess 21d is formed in the main plate 21, as in the LED lighting device 3Y shown in FIG. 103, it is preferable to form an extension 32d as a branching portion branching off from the middle of the third plate 32b3 in the extension 32Y of the cover member 30Y, and to abut this extension 32d against the end face of the substrate 11 of the light source unit 10 while inserting the third plate 32b3 into the recess 21d. With this configuration, it is possible to further prevent the extension 32Y from coming off and to further prevent the extension 32Y from being deformed.

[0410] 94 to 103, when the main plate 21 has the protrusions 21c and / or recesses 21d, the extensions 32Y of the cover member 30Y do not need to be elastically deformed. In other words, the extensions do not need to bend. Even in this case, it is possible to prevent insects from entering the spatial region S2. Furthermore, the protrusions 21c provided on the main plate 21 may not be part of the main plate 21, but may be formed from a member separate from the main plate 21.

[0411] Furthermore, in the frame 20 of the LED lighting device 3 according to the above embodiment, two protrusions 20b are formed on the main plate 21. However, this is not limited to this. For example, as shown in FIG. 104, one protrusion 20b may be formed on the main plate 21 of a frame 20Z. In this case, as shown in FIG. 104, the protrusion 20b may be formed in the center of the main plate 21 in the width direction. A light source unit 10 can be disposed on each side of the protrusion 20b. Furthermore, as shown in FIG. 105, the two protrusions 20b may be formed not at both ends of the main plate 21 but at positions offset from both ends in the width direction. Furthermore, the protrusions 20b are not limited to those formed by press-forming the metal plate constituting the frame 20. For example, as shown in FIGS. 106 and 107, the protrusions 20b may be raised pieces (protrusions) formed by cutting and raising a part of the metal plate constituting the frame 20Z. In this case, the protrusion 20b, which is a cut-and-raised piece, may be formed in the center of the width of the main board portion 21, as shown in Figure 106, or may be formed at both ends of the width of the main board portion 21, as shown in Figure 107.

[0412] Furthermore, in the LED lighting device 3 according to the above embodiment, the cross-sectional shapes of the floor-side portions of the main portion 31 of the cover member 30 and the main portion 41 of the end cap 40 are curved in an arc shape, but this is not limited thereto. For example, as in the LED lighting device 3a shown in FIG. 108, the LED lighting device 3b shown in FIG. 109, and the LED lighting device 3c shown in FIG. 110, the cross-sectional shapes of the floor-side portions (upper portion of the figure) of the main portion 31 of the cover member 300 and the main portion 41 of the end cap 400 may be linear. The LED lighting device 3a in FIG. 108 is a glare-saving type light bar, and the cover member 300 has a hollow structure. A prism plate 500 is inserted into the cover member 300.

[0413] Furthermore, the LED lighting fixture 1 in the above embodiment uses a fixture body 2 having an inverted Fuji-shaped cross section as shown in FIG. 111(a), but this is not limited to this. For example, a fixture body 2A having a rectangular cross section as shown in FIG. 111(b) may be used. The fixture body 2A is I-shaped and does not have an inclined surface portion 2b having an inclined surface (reflective surface). Note that the fixture body 2A shown in FIG. 111(b) has a bent portion formed at the portion forming the opening edge of the recess 2a. This bent portion may be a 90-degree bend, an acute angle bend, or a hemming bend. Furthermore, the LED lighting device 3 fitted into the fixture body 2 or 2A may have a portion of the LED lighting device 3 recessed into the recess 2a of the fixture body 2 or 2A. Furthermore, the shape of the fixture body 2 is not limited to the shape shown in FIG. 111(b), and may be a shaded shape with an inclined surface portion (reflective portion) on the floor side when the fixture body 2 is installed on a ceiling.

[0414] Furthermore, in the above embodiment, the LED lighting fixture 1 is a ceiling-mounted lighting fixture in which the fixture body 2 is directly installed on the ceiling surface, but this is not limited to this. For example, the LED lighting fixture 1 may be a ceiling-embedded lighting fixture in which the fixture body 2 is embedded in the ceiling. In this case, as shown in FIG. 111(c), the fixture body 2B is embedded in an opening provided in the ceiling 100. The LED lighting device 3 fitted into the fixture body 2B may be recessed entirely within the recess 2a of the fixture body 2B so that no part of the LED lighting device 3 protrudes from the ceiling surface of the ceiling 100, or part of the LED lighting device 3 may protrude from the ceiling surface of the ceiling 100.

[0415] In the above embodiment, the opening edge 2a1 of the fixture body 2 is flat and faces the outwardly extending portion 32a of the extension portion 32 of the cover member 30. However, this is not limited to this. For example, as in the fixture body 2C shown in FIG. 112(a), the portion of the fixture body 2C facing the outwardly extending portion 32a of the cover member 30 may be angular so that its cross section is triangular. In this case, the inclined surface portion 2b of the fixture body 2C may be inclined in two stages as shown in FIG. 112(a). Furthermore, as in the fixture body 2D shown in FIG. 112(b), the cross section of the facing portion 2g, which is the portion of the fixture body 2D facing the outwardly extending portion 32a of the cover member 30, may be V-shaped. In this case, as shown in FIG. 112(b), the inclined surface portion 2f of the fixture body 2D may be inclined toward the floor rather than toward the ceiling. This configuration allows a gap to be provided between the outwardly extending portion 32a of the cover member 30 and the fixture body 2D. This makes it easier to insert a finger into this gap and catch the end of the cover member 30, making it possible to easily remove the LED lighting device 3 from the fixture body 2D. In FIG. 112(b), the inclined surface portion 2f is formed so as to surround the side of the LED lighting device 3. Also, as in the fixture body 2E shown in FIG. 112(c), the cross-sectional shape of the portion of the fixture body 2E facing the outwardly extending portion 32a of the cover member 30 may be an obtuse triangle rather than an acute triangle. In FIG. 112(c), the inclined surface portion 2f of the fixture body 2E is also inclined toward the floor, but this is not limited to this. 112(a) to (c), the contact between the extension portion 32 of the cover member 30 and the appliance bodies 2C, 2D, and 2E is line contact rather than surface contact, which can reduce abnormal noise.

[0416] (Other variations) The LED lighting fixture and LED lighting device according to the present invention have been described above based on the embodiments and modifications, but the present invention is not limited to these embodiments and modifications.

[0417] For example, in the above embodiment, various shapes of frames are exemplified as frames used in the LED lighting device 3, but frames of the shapes described below may also be used. Note that the frames described below include frames having the shapes already described above. For convenience, the frames described below will use the same reference numerals as in the above embodiment, even though they have different shapes. Furthermore, the characteristics of the frames described below may be applied to each other, or may be applied to the above embodiment and its modified examples.

[0418] First, in the above embodiment, the horizontal plate portion 23 is composed of the parallel plate portion 23a and the inclined plate portion 23b, but this is not limited thereto. For example, the horizontal plate portion 23 may be composed only of parallel plate portions, as in the frame 201 shown in Fig. 113, or the horizontal plate portion 23 may be composed only of inclined plate portions, as in the frame 202 shown in Fig. 114. In this case, the horizontal plate portion 23 may be composed only of inclined plate portions inclined outward, as in the frame 202 shown in Fig. 114, or the horizontal plate portion 23 may be composed only of inclined plate portions inclined inward, as in the frame 203 shown in Fig. 115.

[0419] In the above embodiment, the upright plate portion 22 of the frame 20 is arranged perpendicular to the main plate portion 21, but this is not limited thereto. For example, as in the frame 204 shown in FIG. 116, the upright plate portion 22 may be an inclined plate portion that is inclined relative to the main plate portion 21. In this case, in the frame 204 shown in FIG. 116, the horizontal plate portion 23 is composed only of an inclined plate portion that is inclined outward. Also, in FIG. 116, the position of the connection between the horizontal plate portion 23 and the side plate portion 24 is the same as the position of the main plate portion 21 (the bottom of the recessed portion 20a), but this is not limited thereto. Specifically, as in the frame 205 shown in FIG. 117, the position of the connection between the horizontal plate portion 23 and the side plate portion 24 may be located closer to the floor than the main plate portion 21 (the bottom of the recessed portion 20a). Furthermore, although not shown, the position of the connection between the horizontal plate portion 23 and the side plate portion 24 may be located closer to the ceiling than the main plate portion 21 (the bottom of the recessed portion 20a).

[0420] Furthermore, the horizontal plate portion 23 may be configured with a curved plate portion, as in a frame 206 shown in Fig. 118. Furthermore, as in a frame 207 shown in Fig. 119, the standing plate portion 22 may be configured with only an inclined plate portion and the horizontal plate portion 23 may be configured with only a parallel plate portion, or as in a frame 208 shown in Fig. 120, the standing plate portion 22 may be configured with only an inclined plate portion and the horizontal plate portion 23 may be configured with a parallel plate portion and an inclined plate portion.

[0421] 121, the horizontal plate portion 23 may be formed in a stepped shape. That is, the horizontal plate portion 23 may have a step. In this case, in the frame 209 shown in FIG. 121, the horizontal plate portion 23 having the step is composed of two parallel plate portions at different heights from the main plate portion 21, but this is not limited to this. For example, as in the frame 210 shown in FIG. 122, the horizontal plate portion 23 having the step may have a parallel plate portion and an inclined plate portion located inside the parallel plate portions. As in the frame 211 shown in FIG. 123, the horizontal plate portion 23 having the step may have a parallel plate portion and an inclined plate portion located outside the parallel plate portions and inclined inward. As in the frame 212 shown in FIG. 124, the horizontal plate portion 23 having the step may have an inclined plate portion inclined outward and an inclined plate portion inclined inward. Also, as in frame 213 shown in Figure 125, the horizontal plate portion 23 may be stepped having an inclined plate portion and a parallel plate portion, and the standing plate portion 22 may be an inclined plate portion, or as in frame 214 shown in Figure 126, the horizontal plate portion 23 may be stepped having two parallel plate portions, and the standing plate portion 22 may be an inclined plate portion.

[0422] 127, a reinforcing rib 21b may be formed at the boundary between the main plate portion 21 and the standing plate portion 22. This ensures the strength of the frame even if the side plate portions 24 are short. The reinforcing rib 21b can be formed by, for example, press working.

[0423] In the above embodiment, the side plate portions 24 of the frame 20 extend from each of the pair of horizontal plate portions 23, but this is not limited to this. For example, the side plate portions 24 of the frame 20 may extend from only one of the pair of horizontal plate portions 23. In other words, it is sufficient that the side plate portions 24 extend from at least one of the pair of horizontal plate portions 23.

[0424] In the above embodiment, the outer extension portion 32a of the cover member 30 may be part of the main portion 31. In this case, the extension portion 32 of the cover member 30 will consist of, for example, only the inner extension portion 32b, which extends from the outer extension portion 32a, which is part of the main portion 31, toward the inside of the cover member 30.

[0425] In the above embodiment, the LED lighting device 3 is attached to the fixture body 2 by rotating the LED lighting device 3, but this is not limited to this. That is, the LED lighting device 3 may be attached to the fixture body 2 without rotating it. Specifically, the LED lighting device 3 may be attached to the fixture body 2 by hooking a leaf spring or the like provided on the LED lighting device 3 onto the fixture body 2 installed on the ceiling and moving the LED lighting device 3 in the vertical direction so as to translate the LED lighting device 3 toward the fixture body 2. In this case, the LED lighting device 3 can be attached to the fixture body 2 by vertically pushing and fitting the LED lighting device 3 into the recess 2a of the fixture body 2.

[0426] In the above embodiment, the LED lighting fixture 1 is a ceiling-mounted lighting fixture in which the fixture body 2 is directly installed on the ceiling surface, but this is not limited to this. For example, the LED lighting fixture 1 may be a ceiling-embedded lighting fixture in which the fixture body 2 is embedded in the ceiling.

[0427] In the above embodiment, the LEDs 12 are SMD-type LED elements in which LED chips are mounted in a package, and the light-emitting module consisting of the substrate 11 and the LEDs 12 is an SMD-type LED module, but this is not limiting. For example, the light-emitting module consisting of the substrate 11 and the LEDs 12 may be a COB (Chip On Board) type LED module. In this case, LED chips (bare chips) themselves may be used as the LEDs 12, and multiple LEDs 12 (LED chips) may be linearly arranged on the substrate 11, and the multiple LEDs 12 may be collectively or individually sealed with a sealing member (for example, a phosphor-containing resin).

[0428] Furthermore, in the above embodiment, the cover member 30 has both diffusive and translucent properties, but this is not limiting. For example, a translucent cover that has only translucent properties out of the diffusive and translucent properties may be used instead of the cover member 30. In this case, a transparent cover with high transmittance that allows the viewer to see through may be used as the translucent cover.

[0429] In addition, the present disclosure also includes embodiments obtained by various modifications of the above-described embodiments that would occur to a person skilled in the art, and embodiments realiz...

Claims

1. An LED lighting device, A light source unit; a long frame having a main plate portion to which the light source unit is attached; a long cover member having a main portion covering the light source unit and an extension portion extending toward the light source unit; and an end cap provided at an end of the cover member in a longitudinal direction, The end cap has a cap body and a protrusion protruding from an inner surface of the cap body, The extension portion is pressed against and comes into contact with the main plate portion, The end cap has, as the protrusion, a first extension portion facing protruding piece that faces the extension portion in the vertical direction when the LED lighting device is attached to a fixture body installed on a ceiling, The first extension portion facing protruding piece is provided at a position where it can come into contact with the extension portion. LED lighting equipment.

2. The end cap further has, as the protrusion, at least one of a main plate portion opposed protrusion piece that faces the main plate portion in the vertical direction and a second extension portion opposed protrusion piece that faces the extension portion in the horizontal direction, The first extension portion opposing protruding piece is connected to the main plate portion opposing protruding piece or the second extension portion opposing protruding piece.

2. The LED lighting device according to claim 1.

3. The end cap further has, as the protrusion, at least one of a main plate portion opposed protrusion piece that faces the main plate portion in the vertical direction and a second extension portion opposed protrusion piece that faces the extension portion in the horizontal direction, The first extension portion opposing protruding piece is not connected to the main plate portion opposing protruding piece and the second extension portion opposing protruding piece.

2. The LED lighting device according to claim 1.

4. The extension portion is elastically deformable between the first extension portion opposing protruding piece and the main plate portion. The LED lighting device according to any one of claims 1 to 3.

5. The end cap further includes, as the protrusion, a third extension portion opposing protruding piece that faces the extension portion in the vertical direction, The extension portion is sandwiched between the first extension portion opposing protruding piece and the third extension portion opposing protruding piece. The LED lighting device according to any one of claims 1 to 3.

6. An LED lighting device according to any one of claims 1 to 3; and a fixture body having a recess in which the LED lighting device is attached. LED lighting fixture.

Images