LED illuminating device and LED luminaire

Abstract

To provide an LED illuminating device, etc. that can restrain an unusual noise from occurring due to contact between a fitting part of a cover member and an appliance body.SOLUTION: An LED illuminating device 3 comprises a light source part 10, a long frame 20 comprising a main plate part 21 fitted with the light source part 10, and a long cover member 30 fitted to the frame 20. The frame 20 comprises a side plate part 24 extending toward the side opposite to a light emitting side of the light source part 10. The cover member 30 comprises: a main part 31 covering the light source part 10; and a fitting part 33 extending toward the side opposite to the light emitting side of the light source part 10, and fitted to the side plate part 24. When the LED illuminating device 3 is fitted to an appliance body 2, the fitting part 33 is located between the side plate part 24 and a side surface part 2f of the appliance body 2. The LED illuminating device 3 comprises a part located closer to the side of the side surface part 2f of the appliance body 2 than the fitting part 33.SELECTED DRAWING: Figure 10

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] There is known an LED lighting fixture that uses LEDs (Light Emitting Diodes). For example, as an LED lighting fixture to be 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 metallic fixture body having a recess in which the LED lighting device can be detachably attached (Patent Document 1).

[0003] As shown in Fig. 50, an LED lighting device 3X in this type of LED lighting fixture 1X includes a light source unit 10X made of LEDs, a metal frame 20X to which the light source unit 10X is attached, and a cover member 30X made of translucent resin. The frame 20X has a main plate 21X on which the light source unit 10X is disposed and a pair of side plate parts 24X extending from both ends of the main plate part 21X in the short direction toward the ceiling side, and the cover member 30X has a main part 31X that covers the light source unit 10X and a pair of mounting parts 33X that extend in the longitudinal direction (Y-axis direction) of the frame 20X and are a pair of legs attached to the side plate parts 24X of the frame 20X. The pair of mounting parts 33X of the cover member 30X are fixed to the frame 20X so as to embrace the side plate parts 24X of the frame 20X. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2015-176747 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the LED lighting device 1X shown in FIG. 50, the mounting portion 33X of the resin cover member 30X is in contact with the side portion 2f of the metal device body 2X, which causes stick-slip due to the difference in thermal expansion between the mounting portion 33X of the cover member 30X and the device body 2X, resulting in an issue of abnormal noise.

[0006] In particular, as shown in FIG. 51, the fixture body 2X is fixed to the ceiling by tightening with the bolt 101, so that the side surface 2f of the long fixture body 2X is deformed inward. That is, the pair of opposing side surfaces 2f are deformed so as to be narrowed. As a result, even if there is a gap between the mounting portion 33X of the cover member 30X and the side surface 2f of the fixture body 2X in terms of design, the mounting portion 33X of the cover member 30X and the side surface 2f of the fixture body 2X come into contact with each other, generating abnormal noise. In addition, since the frame 20X, the cover member 30X, and the fixture body 2X are long, they may be warped, wavy, or have dimensional variations, which may result in the mounting portion 33X of the cover member 30X coming into contact with the side surface 2f of the fixture body 2X.

[0007] The present invention has been made in consideration of such problems, and aims to provide an LED lighting device and an LED lighting fixture that can suppress abnormal noise caused by contact between the mounting portion of the cover member and the fixture body. [Means for solving the problem]

[0008] In order to achieve the above object, one embodiment of the LED lighting device according to the present invention is an LED lighting device that is attached to a recess of a fixture body installed in a construction material, and includes a light source unit, a long frame having a main plate to which the light source unit is attached, and a long cover member attached to the frame, wherein the frame has a side plate extending toward the opposite side to the light emission side of the light source unit, and the cover member has a main portion that covers the light source unit, and an attachment portion that extends toward the opposite side to the light emission side of the light source unit and is attached to the side plate, and when the LED lighting device is attached to the fixture body, the attachment portion is located between the side plate and a side portion of the fixture body, and the LED lighting device has a portion that is located closer to the side portion of the fixture body than the attachment portion.

[0009] Moreover, one aspect 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. Effect of the Invention

[0010] This can suppress abnormal noise caused by contact between the mounting portion of the cover member and the main body of the appliance. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view of an LED lighting device according to an embodiment. [Diagram 2] FIG. 2 is an exploded perspective view of the LED lighting device according to the embodiment. [Diagram 3] FIG. 3 is a cross-sectional view of an LED lighting device according to an embodiment. [Figure 4] FIG. 4 is a cross-sectional view of an LED lighting device according to an embodiment. [Diagram 5] FIG. 5 is a partial cross-sectional view of an LED lighting device 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 viewed from the back side. [Figure 8] FIG. 8 is a cross-sectional perspective view of an LED lighting device according to an embodiment. [Figure 9] FIG. 9 is an exploded perspective view of the LED lighting device according to the embodiment. [Figure 10] FIG. 10 is an enlarged cross-sectional view of a main part of an LED lighting device according to an embodiment. [Figure 11] FIG. 11 is an enlarged perspective view of the periphery of a protrusion of a frame and a through hole of a cover member in an LED lighting device according to an embodiment. [Figure 12] FIG. 12 is a diagram for explaining a method for mounting an LED lighting device to a fixture body in an LED lighting fixture according to an embodiment. [Figure 13] FIG. 13 is an enlarged cross-sectional view showing a part of an LED lighting device according to the first modification. [Figure 14] FIG. 14 is an enlarged cross-sectional view showing a part of an LED lighting device according to the second modification. [Figure 15] FIG. 15 is an enlarged cross-sectional view showing a part of an LED lighting device according to the third modification. [Figure 16] FIG. 16 is an enlarged cross-sectional view showing a part of an LED lighting device according to the fourth modification. [Figure 17] FIG. 17 is an enlarged cross-sectional view showing a part of an LED lighting device according to the fifth modification. [Figure 18] FIG. 18 is a diagram showing the configuration of a protrusion of a frame in an LED lighting device according to the fifth modification. [Figure 19] FIG. 19 is an enlarged cross-sectional view showing a part of an LED lighting device according to the sixth modification. [Figure 20] FIG. 20 is an enlarged cross-sectional view showing a part of an LED lighting device according to the seventh modification. [Figure 21] FIG. 21 is a diagram showing variations of a plurality of protrusions formed on the side plate of the frame. [Figure 22] FIG. 22 is an enlarged cross-sectional view showing a part of an LED lighting device according to the eighth modification. [Figure 23] FIG. 23 is a diagram showing variations of the protrusions in the LED lighting device according to the eighth modification. [Figure 24] FIG. 24 is an enlarged cross-sectional view showing a part of an LED lighting device according to the ninth modification. [Diagram 25] FIG. 25 is an enlarged cross-sectional view showing a part of an LED lighting device according to the tenth modification. [Figure 26] FIG. 26 is a half cross-sectional view of an LED lighting device according to the eleventh modification. [Figure 27] FIG. 27 is an enlarged cross-sectional view showing a part of an LED lighting device according to the twelfth modification. [Figure 28] FIG. 28 is an enlarged cross-sectional view showing a part of an LED lighting device according to the thirteenth modification. [Figure 29A] FIG. 29A is a cross-sectional view of an LED lighting device according to Modification 14. FIG. [Figure 29B] FIG. 29B is a cross-sectional view of an LED lighting device according to another aspect of the fourteenth modification. [Diagram 30] FIG. 30 is a cross-sectional view of two types of cover members. [Diagram 31] FIG. 31 is a cross-sectional view showing a variation of the cover member of FIG. 30(a). [Diagram 32] FIG. 32 is a cross-sectional view showing a variation of the cover member of FIG. 30(b). [Diagram 33] FIG. 33 is a cross-sectional view showing a modified example of the instrument body. [Diagram 34] FIG. 34 is a cross-sectional view showing a first modified example of the frame. [Diagram 35] FIG. 35 is a cross-sectional view showing a second modified example of the frame. [Diagram 36] FIG. 36 is a cross-sectional view showing a third modified example of the frame. [Figure 37] FIG. 37 is a cross-sectional view showing a fourth modified example of the frame. [Figure 38] FIG. 38 is a cross-sectional view showing a fifth modified example of the frame. [Figure 39]FIG. 39 is a cross-sectional view showing a sixth modified example of the frame. [Diagram 40] FIG. 40 is a cross-sectional view showing a seventh modified example of the frame. [Diagram 41] FIG. 41 is a cross-sectional view showing an eighth modified example of the frame. [Diagram 42] FIG. 42 is a cross-sectional view showing a ninth modified example of the frame. [Diagram 43] FIG. 43 is a cross-sectional view showing a tenth modified example of the frame. [Diagram 44] FIG. 44 is a cross-sectional view showing an eleventh modified example of the frame. [Diagram 45] FIG. 45 is a cross-sectional view showing a twelfth modified example of the frame. [Diagram 46] FIG. 46 is a cross-sectional view showing a thirteenth modified example of the frame. [Figure 47] FIG. 47 is a cross-sectional view showing a fourteenth modified example of the frame. [Figure 48] FIG. 48 is a cross-sectional view showing a fifteenth modified example of the frame. [Figure 49] FIG. 49 is a cross-sectional view showing a sixteenth modified example of the frame. [Figure 50] FIG. 50 is a cross-sectional view of a conventional LED lighting fixture. [Figure 51] FIG. 51 is a top view of a conventional LED lighting fixture. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, embodiments of the present invention will be described with reference to the drawings. 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, the steps and the order of the steps, etc. 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 showing the highest concept of the present invention will be described as optional components.

[0013] Note that each figure is a schematic diagram and is not necessarily illustrated precisely. In addition, in each figure, the same reference numerals are attached to substantially the same configurations, and duplicated explanations are omitted or simplified. In each figure, the X-axis, Y-axis, and Z-axis represent three axes of a three-dimensional orthogonal coordinate system, and in this embodiment, the Z-axis direction is the vertical direction, and the direction perpendicular to the Z-axis (direction parallel to the XY plane) is the horizontal direction. The X-axis and Y-axis are mutually orthogonal, and both are axes perpendicular 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.

[0014] (Embodiment) First, the configuration of an LED lighting device 1 according to an embodiment will be described with reference to Figs. 1 to 5. Fig. 1 is a perspective view of an LED lighting device 1 according to an embodiment. Fig. 2 is an exploded perspective view of the LED lighting device 1. Figs. 3 and 4 are cross-sectional views of the LED lighting device 1, showing a cross-section when cut along a plane parallel to the short side direction of the LED lighting device 1. Fig. 3 shows a cross-section of a portion where the power supply device 4 is not present, and Fig. 4 shows a cross-section of a portion where the power supply device 4 is present. Fig. 5 is a partial cross-sectional view of the LED lighting device 1, showing a cross-section when cut along a plane parallel to the longitudinal direction of the LED lighting device 1. Specifically, Fig. 5 shows a cross-section of the periphery of one of both longitudinal ends of the LED lighting device 1.

[0015] 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.

[0016] 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].

[0017] The LED lighting fixture 1, which consists of a fixture body 2 and an LED lighting device 3, has an overall D-shaped cross-sectional shape when viewed from the longitudinal direction of the LED lighting fixture 1, as shown in Figure 3, and has a clean design in which the boundary between the fixture body 2 and the LED lighting device 3 is not noticeable.

[0018] The fixture body 2 holds the LED lighting device 3. The fixture body 2 is installed at 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, a building, a store, or a house. 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 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 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.

[0019] When installing the LED lighting fixture 1 on a ceiling, the fixture body 2 of the LED lighting fixture 1 is attached to the ceiling using a bolt 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 a nut are attached to the bolt 101 to fix 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 bolt projection allowance (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.

[0020] In addition, since the components (power supply device 4, dimming terminal block 9, functional unit, etc.) provided on the back side of the frame 20 of the LED lighting device 3 protrude from the frame 20, it is preferable that they are arranged so as not to overlap the bolt insertion hole 2d, the wiring insertion hole 2e (holes through which wiring 102 such as a power line and a dimming signal line drawn from the ceiling is inserted) and the terminal block provided in the fixture body 2, so as not to interfere with them. In particular, in a fixture body 2 with a shallow recess 2a, it is preferable that the components provided on the back side of the frame 20 are arranged so as not to overlap the bolt insertion hole, the wiring insertion hole and the terminal block. 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, it is preferable that the components provided on the back side of the frame 20 are arranged so as not to overlap the bolt insertion hole, the wiring insertion hole and the terminal block. Furthermore, 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 the power line) 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.

[0021] The fixture body 2 is made of metal, and is formed into a long and flat box shape in the Y-axis direction by bending a metal plate. Specifically, the fixture body 2 is formed so as to have an inverted Fuji shape when viewed from the Y-axis direction when installed on a ceiling. Note that a paint film may be formed on the surface of the fixture body 2 by painting the fixture body 2.

[0022] 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. That is, the shape of the recess 2a when viewed from above (the shape of the opening surface) is a rectangle with the Y-axis direction as the longitudinal direction.

[0023] As shown in Figs. 2 and 3, the device 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 device body 2, and is a device body side that is a side part of the device body 2. The opening edge 2a1 (device body side) constitutes the edge of the opening surface of the recess 2a in the short side direction (X-axis direction) of the device 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 part whose surface is flat, and constitutes the opening edge surface of the recess 2a.

[0024] The opening edge 2a1 is a part of the metal plate constituting the device body 2 and has a flat plate shape. As an example, the shape of the opening edge 2a1 in a top view is a long and narrow rectangle whose longitudinal direction is 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 whose longitudinal direction is the Y-axis direction.

[0025] 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.

[0026] As shown in Figs. 1 and 2, the device body 2 has not only the 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 is an end portion of the device body 2. The opening edge 2a2 constitutes 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 constitutes the opening edge surface of the recess 2a.

[0027] The opening edge 2a2, like the opening edge 2a1, is a part of the metal plate constituting the device body 2 and has a flat plate shape. As an example, the opening edge 2a2 has a rectangular shape with its longitudinal direction in the X-axis direction when viewed from above. 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.

[0028] 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.

[0029] In this embodiment, the opening edge 2a1 on the side of the device body overlaps with the end of the opening edge 2a2 on the end of the device body in the X-axis direction. Therefore, the surface of the opening edge 2a2 is set back from the surface of the opening edge 2a1 toward the bottom side of the recess 2a by the thickness of the opening edge 2a1. In other words, the opening edge 2a2 is recessed from the opening edge 2a1 by the plate thickness of the opening edge 2a1. As a result, a step is formed at the boundary between the opening edge 2a1 and the opening edge 2a2 by the plate thickness. The width of the opening edge 2a1 is narrower than the width of the opening edge 2a2, but this is not limited to this.

[0030] The pair of opening edges 2a1 and the pair of opening edges 2a2 form a planar 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.

[0031] The fixture body 2 also has an inclined surface portion 2b on each side 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 (fixture body side) and has an inclined surface that inclines toward the ceiling as it goes outward. This inclined surface may function as a reflective surface.

[0032] 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 where the LED lighting device 3 is stored, and is provided over substantially the entire length of the fixture body 2, except for an 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 is composed of a pair of opposing side portions 2f and a bottom portion 2g.

[0033] The side surface portion 2f and the bottom surface portion 2g are both flat and are parts of the metal plate that constitutes the device body 2. The side surface portion 2f and the bottom surface portion 2g are elongated rectangular plate-like bodies whose longitudinal direction is the Y-axis direction.

[0034] The pair of side portions 2f are a pair of side walls erected on the bottom portion 2g. Specifically, the pair of side portions 2f are provided at both ends of the bottom portion 2g in the X-axis direction (width direction). The pair of side portions 2f are parallel to the YZ plane. The bottom portion 2g is parallel to the XY plane. The pair of side portions 2f and the bottom portion 2g form a recess 2a having a U-shaped cross section.

[0035] 2, one of a pair of side surface portions 2f of the recess 2a is provided with two slits 2c, and a bottom surface portion 2g is provided with a bolt insertion hole 2d and a wire insertion hole 2e.

[0036] 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 removed from the recess 2a.

[0037] 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 (kick spring in this embodiment) provided on the LED lighting device 3 with 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.

[0038] The means for attaching the LED lighting device 3 to the fixture body 2 is not limited to the hook metal fitting 5 and the elastic holding member 6 using the kick spring. For example, the LED lighting device 3 and the fixture body 2 may be attached by other spring members such as a single torsion spring, a double torsion spring, or a leaf spring, or may be attached by a mounting member other than a spring member such as a screw or a latch. In addition, the elastic holding member 6 such as a kick spring and the receiving metal fitting 7 for receiving the elastic holding member 6 may be provided on either the fixture body 2 or the LED lighting device 3. In this embodiment, the elastic holding member 6 is provided on the LED lighting device 3, and the receiving metal fitting 7 is provided on the fixture body 2. In addition, the elastic holding member 6 may be provided on the fixture body 2, and the receiving metal fitting 7 may be provided on the LED lighting device 3.

[0039] 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 a light source unit 10 of the LED lighting device 3.

[0040] The power supply device 4 is disposed on the back 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 and may be disposed in the fixture body 2 separately from the LED lighting device 3. For example, the power supply device 4 may be fixed to the fixture body 2.

[0041] The power supply device 4 is configured by a power supply circuit that generates power for making the LED lighting device 3 emit light. 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 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, stepping down, etc., and supplies the DC power to the LED of the LED lighting device 3.

[0042] 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, which is inserted from above 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 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.

[0043] Furthermore, when connecting the power supply terminal block 8 and the power supply unit 4 via a power line, a connector provided at one end of the power line connected to the power supply terminal block 8 may be inserted into a socket on the power supply unit 4, or a connector provided at the other end of the power line connected to the power supply terminal block 8 and a connector provided at the other end of the power line connected to the power supply unit 4 may be connected to each other, or a connector provided at the other end of the power line connected to the power supply unit 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 and the power supply unit 4 may be connected with a power line and the VVF cable from the ceiling may be connected to the power supply terminal block 8, or the outlet wire pulled out from the power supply unit 4 may be directly connected to the VVF cable from the ceiling.

[0044] Next, the detailed structure of the LED lighting device 3 will be described with reference to Figs. 1 to 5 and Figs. 6 to 11. Fig. 6 is a perspective view of the LED lighting device 3 according to the embodiment when viewed from the cover member 30 side (front 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 an enlarged cross-sectional view of the main part of the LED lighting device 3, showing a cross section of the area X surrounded by the dashed line in Fig. 3. Fig. 11 is an enlarged perspective view of the LED lighting device 3, showing the surrounding area between the protrusion 25 of the side plate part 24 of the frame 20 and the through hole 34 of the mounting part 33 of the cover member 30. Fig. 11 shows the state when the frame 20 and the cover member 30 are separated.

[0045] 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.

[0046] 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.

[0047] 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 plate portion 21 of the frame 20 with a screw 60.

[0048] Each of the members constituting the LED lighting device 3 will be described in detail below.

[0049] 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.

[0050] 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.

[0051] The substrate 11 is a mounting substrate for mounting the LEDs 12. In this embodiment, the substrate 11 is formed in a generally 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.

[0052] The substrate 11 is, for example, a printed wiring board (printed circuit board) on which metal wiring is formed in a predetermined pattern. A resist made of an insulating resin material may be formed on the surface of the substrate 11 so as to cover the wiring in order to protect the wiring and ensure a dielectric strength voltage. The substrate 11 may be a single-sided wiring substrate on which wiring is formed only on the main surface on which the LEDs 12 are mounted, or a double-sided wiring substrate on which wiring is formed on both sides.

[0053] The base material constituting the substrate 11 may be a resin substrate made of an insulating resin material, a ceramic substrate made of a sintered body of a ceramic material such as alumina, or a metal-based substrate obtained by applying an insulating coating to the surface of a metal substrate made of a metal material such as aluminum or copper.

[0054] 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 craft 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.

[0055] 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.

[0056] 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 on the cover member 30 side, and the second surface of the substrate 11 is the surface on the frame 20 side. In this embodiment, the second surface of the substrate 11 is in contact with the frame 20.

[0057] As shown in Figs. 8 and 9, the LEDs 12 are arranged on the substrate 11. Specifically, a plurality of LEDs 12 are arranged on the 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 longitudinal direction of the substrate 11. Therefore, the plurality of LEDs 12 are mounted along the longitudinal direction of the frame 20 and the cover member 30. The plurality of LEDs 12 may be mounted in multiple rows, not in a row, along the longitudinal direction of the substrate 11. The plurality of LEDs 12 emit light by a direct current supplied from the power supply device 4 via an electric wire connecting the power supply device 4 and the substrate 11.

[0058] 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) having an SMD structure. Therefore, the light source unit 10 is an SMD type LED module.

[0059] The SMD type LED 12 includes a white resin or ceramic container (package), an LED chip (bare chip) disposed in the container, and a sealing member for sealing the LED chip. In this embodiment, the LED 12 is a white LED element that emits white light. In this case, for example, a blue LED chip that emits blue light when energized is used as the LED chip, and a silicone resin (phosphor-containing resin) containing a yellow phosphor such as YAG is used as the sealing member filled in the container.

[0060] The light source section 10 thus configured is disposed on a frame 20. Specifically, the substrate 11 of the light source section 10 is disposed on the frame 20.

[0061] 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.

[0062] 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.

[0063] The frame 20 is plate-shaped. In this embodiment, the frame 20 is made of metal and is configured of a metal plate. The frame 20 is formed into a predetermined shape by, for example, performing roll forming and / or press working on a single sheet 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, since the frame 20 is formed by sheet metal working, the thickness of the metal plate configuring the frame 20 is preferably 1 mm or less. Specifically, the thickness of the metal plate configuring the frame 20 is set to 0.5 mm. Note that the method of manufacturing the frame 20 is not limited to roll forming and press working, and may be aluminum extrusion molding or the like.

[0064] As shown in Fig. 3 and Fig. 4, the plate-like frame 20 has a main plate portion 21, a pair of standing 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 standing 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 Fig. 3 and Fig. 4, in this embodiment, the frame 20 is formed symmetrically on 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.

[0065] The main board 21 is the main body of the frame 20. The main board 21 is a plate-like body having a constant thickness and a flat shape as a whole. As shown in FIG. 3, the light source 10 is disposed on the main board 21. Specifically, the board 11 on which the 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 thereto.

[0066] The main board 21 has a first surface which faces the substrate 11, and a second surface facing away from the first surface. In this embodiment, the first surface of the main board 21 is a substrate mounting surface to which the substrate 11 is attached. When the LED lighting device 1 is installed on a ceiling, the frame 20 is arranged 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.

[0067] 3, the main plate 21 is located closer to the ceiling than the opening surface of the recess 2a of the fixture body 2 (i.e., the bottom surface side of the recess 2a). In this embodiment, the LED 12 is also located closer to the bottom surface side of the recess 2a than the opening surface of the recess 2a of the fixture body 2. Specifically, the main plate 21 and the LED 12 are located closer to the ceiling than the opening edge 2a1 of the recess 2a. This can increase the distance between the cover member 30 and the LED 12, thereby suppressing uneven brightness (graininess) of the multiple LEDs 12 arranged in a straight line.

[0068] As shown in Figs. 8 and 9, the main plate portion 21 is formed with a claw piece 21a that is formed by cutting and raising a part of the frame 20 made of a metal plate.

[0069] The substrate 11 placed on the main plate 21 is fixed to the main plate 21 by being engaged with the claw 21a. In this case, for example, the substrate 11 may be slid to engage the substrate 11 with the claw 21a and the end of the substrate 11 in the longitudinal direction may be engaged with another claw, or the substrate 11 may be fixed to the main plate 21 by crimping the claw 21a to engage the substrate 11 with the claw 21a. The method of fixing the main plate 21 and the substrate 11 is not limited to the engagement structure using the claw 21a, and the main plate 21 and the substrate 11 may be bonded and fixed with an adhesive or an adhesive tape. In addition, the main plate 21 and the substrate 11 are in contact with each other, but this is not limited thereto. For example, a separate member such as a heat conductive sheet may be inserted between the main plate 21 and the substrate 11. Furthermore, main plate portion 21 is provided with a through hole through which an electric wire for electrically connecting wiring of substrate 11 and power supply device 4 is inserted.

[0070] The pair of standing plate portions 22 are standing plate portions standing on the main plate portion 21. Specifically, one of the pair of standing plate portions 22 stands upright from one end portion of the main plate portion 21, and the other of the pair of standing plate portions 22 stands upright from the other end portion of the main plate portion 21. The standing plate portions 22 and the horizontal plate portion 23 are provided between the main plate portion 21 and the side plate portion 24. Each of the pair of standing plate portions 22 is flat.

[0071] 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. That is, 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.

[0072] As shown in Figs. 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 disposed 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 disposed. In addition, the side of the recess 20a is the standing plate portion 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.

[0073] 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.

[0074] The light source unit 10 arranged at the bottom of the recess 20a is stored 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 stored so as not to protrude from the recess 20a. That is, the LED 12 is stored 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 surface of the recess 20a. In this case, the floor side end of the LED 12 may be located at a position retreated from the opening surface of the recess 20a, or may be flush with the opening surface of the recess 20a. In this way, by storing the LED 12 in the recess 20a, the distance between the LED 12 and the main part 31 of the cover member 30 can be increased, so that the brightness unevenness (graininess) caused by the multiple LEDs 12 arranged at a distance in the longitudinal direction of the frame 20 can be suppressed.

[0075] 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, a part 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 may be disposed so as not to protrude from the recess 20a, and the depth of the recess 20a may be greater than the thickness of the substrate 11 of the light source unit 10.

[0076] In addition, if the depth of the recess 20a of the frame 20 is a [mm] and the width of the recess 20a is w1 [mm], it is preferable that the relational expression w1 ≧ 10 × a is satisfied. In other words, the ratio of the depth a of the recess 20a to the width w1 of the recess 20a is 1:10 or more. This makes it possible to prevent the light emitted from the LED 12 from being blocked by hitting the corner of the opening surface of the recess 20a (the connection portion between the vertical plate portion 22 and the horizontal plate portion 23) even if the light source portion 10 is stored in the recess 20a. In other words, by making w1 ≧ 10 × a, it is possible to make it difficult for the light emitted from the LED 12 to be blocked. In this case, if the width of the recess 20a is w1 [mm] and the width of the horizontal plate portion 23 is w2 [mm], it is preferable that the relational expression w1 > 2 × w2 is satisfied.

[0077] Furthermore, the frame 20 has a protruding portion 20b as a protruding structure that protrudes from the main board portion 21 toward the light emission side of the light source unit 10. In other words, when the direction of the light emission side of the light source unit 10 is defined as a first direction with respect to the main board portion 21, the protruding portion 20b protrudes toward the first direction from the main board portion 21. When the LED lighting device 1 is installed on a ceiling, the protruding portion 20b of the frame 20 protrudes toward the floor side.

[0078] The protruding portion 20b is provided in a pair on both sides of the main plate portion 21 in the short direction of the frame 20. The pair of protruding portions 20b is formed on the frame 20 by forming the recessed portion 20a on the frame 20. In this embodiment, since the recessed portion 20a is formed so as to be recessed toward the ceiling side, each of the pair of protruding portions 20b is formed so as to protrude toward the floor side. Each of the pair of protruding portions 20b is composed of a horizontal plate portion 23 and a vertical plate portion 22. In this manner, by forming the protruding portion 20b on the main plate portion 21, the strength of the frame 20 can be improved. The recessed portion 20a and the pair of protruding portions 20b can be formed by deforming a metal plate constituting the frame 20 by press processing or the like. Specifically, the recessed portion 20a and the protruding portion 20b are formed by bending a metal plate. Therefore, the plate thicknesses of the main plate portion 21, the vertical plate portion 22, the horizontal plate portion 23, and the side plate portion 24 are the same.

[0079] The horizontal plate portion 23 is located beside the recessed portion 20a. In this embodiment, the horizontal plate portion 23 is 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 end portion on the floor side of the standing plate portion 22 and extends outward from the end portion on the floor side of the standing plate portion 22.

[0080] In addition, when a first direction, which is the direction of the light emission side of the light source unit 10 (LED 12) with respect to the main board portion 21, is taken 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 portion 21, is taken as the ceiling side (i.e., the construction material side), at least a part of each of the pair of horizontal board portions 23 is located on the floor side (first direction side) of the main board portion 21. In this embodiment, the entire horizontal board portion 23 is located on the floor side of the main board portion 21. Therefore, a pair of protruding portions 20b, each of which is composed of a standing board portion 22 and a horizontal board portion 23, is located on the floor side of the main board portion 21. As a result, a spatial area is formed on the ceiling side of each protruding portion 20b. The spatial area is an area surrounded by the protruding portion 20b on the ceiling side of the frame 20. In other words, this spatial area is an area surrounded by the standing board portion 22 and the horizontal board portion 23 on the ceiling side of the frame 20. In this embodiment, since the side plate portion 24 is provided on the side of the horizontal plate portion 23 opposite to the standing plate portion 22, 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 side. As will be described in detail later, this spatial region may store internal electric wires, construction electric wires (external electric wires), structural members such as springs and screws, or functional parts. In particular, since the side plate portion 24 exists as the outer wall of this spatial region, the internal electric wires stored in the spatial region are less likely to protrude from the spatial region. This makes it possible to prevent the internal electric wires from protruding and becoming caught in the wires.

[0081] Furthermore, this spatial region may house not only one internal wire but also multiple internal wires. The one or multiple internal wires housed in this spatial region are fixed to the frame 20 by 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 housed. In this case, the metal fittings are preferably disposed between the standing plate portion 22 and the side plate portion 24 so as to be braced against the space.

[0082] 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 side surface of the main board portion 21 of the frame 20, and the internal wires may be 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 preferable to attach the tape by utilizing this spatial region. For example, the internal wires may be arranged on the ceiling side surface of the main board portion 21, and the tape may be attached so as to straddle 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, and therefore peeling of the tape can be suppressed.

[0083] Each of the pair of horizontal plate portions 23 is composed of a plurality of plate portions. In the present embodiment, the horizontal plate portion 23 is composed of two plate portions. Specifically, as shown in FIG. 3, the horizontal plate portion 23 has, as the plurality of plate portions, a parallel plate portion 23a (first plate portion) parallel to the main plate portion 21 and an inclined plate portion 23b (second plate portion) inclined with respect to the main plate portion 21. In other words, the protruding portion 20b has the parallel plate portion 23a and the inclined plate portion 23b. The parallel plate portion 23a and the inclined plate portion 23b are both flat plate-shaped.

[0084] 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 side. Therefore, the protruding portion 20b composed of 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, the length of the parallel plate portion 23a is longer than the length of the inclined plate portion 23b.

[0085] 3 and 4, at least a part of the pair of protrusions 20b formed on the frame 20 is located on the floor side of the opening surface of the recess 2a of the instrument body 2. In other words, at least a part of the pair of protrusions 20b is located on the floor side of the opening edge 2a1 of the recess 2a of the instrument body 2. In this embodiment, the pair of horizontal plate portions 23 are located on the floor side of the opening surface of the recess 2a of the instrument body 2. Specifically, both the parallel plate portion 23a and the inclined plate portion 23b of the horizontal plate portion 23 are located on the floor side of the opening surface of the recess 2a.

[0086] 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 an 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 an end of the side plate portion 24.

[0087] 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 body 2 is installed. In this embodiment, the construction material on which the fixture body 2 is installed is the ceiling, and the fixture 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.

[0088] A pair of mounting portions 33 of the cover member 30 are attached to each of the pair of side plate portions 24. The side plate portions 24 and the mounting portions 33 are fixed to each other by, for example, screws. In this case, the screws are screwed into the portions where the side plate portions 24 and the mounting portions 33 overlap from the outside of the mounting portions 33. Alternatively, the frame 20 and the cover member 30 may be fixed to each other by a crimping structure. For example, the frame 20 and the cover member 30 may be fixed to each other by crimping a part of the side plate portions 24 of the frame 20 to the mounting portions 33 of the cover member 30. The frame 20 and the cover member 30 may also be fixed to each other by a separate part such as a metal fitting.

[0089] The pair of side plate portions 24 are located inside the pair of mounting portions 33 of the cover member 30. The side plate portions 24 and the mounting portions 33 face each other. The side plate portions 24 extend along the mounting portions 33. The side plate portions 24 and the mounting portions 33 are parallel to each other. The side plate portions 24 and the mounting portions 33 may or may not be in contact with each other. In other words, the side plate portions 24 and the mounting portions 33 may be in surface contact with each other, or a gap may exist between the side plate portions 24 and the mounting portions 33.

[0090] When the LED lighting device 3 is attached to the fixture body 2, the pair of side plate portions 24 are housed in the recess 2a of the fixture body 2. Each side plate portion 24 faces a side surface portion 2f of the fixture body 2. Each of the pair of side plate portions 24 extends along each of the pair of side surface portions 2f. As shown in Fig. 3, the side plate portions 24 and the side surface portions 2f of the fixture body 2 are parallel to each other.

[0091] Each of the pair of side plate portions 24 extends from each of the pair of protruding portions 20b toward the ceiling side. In this embodiment, each of the pair of side plate portions 24 extends from the end of the horizontal plate portion 23 toward the ceiling side. One of the pair of side plate portions 24 extends from the outer end of one of the pair of horizontal plate portions 23 toward the ceiling side, and the other of the pair of side plate portions 24 extends from the outer end of the other of the pair of horizontal plate portions 23 toward the ceiling side. In other words, the pair of side plate portions 24 extend from the outer end of the protruding portion 20b in the short direction of the frame 20 toward the ceiling side. Specifically, each of the pair of side plate portions 24 is connected to the inclined plate portion 23b of the horizontal plate portion 23 and extends from the end of the inclined plate portion 23b toward the ceiling side.

[0092] Each of the pair of side plate portions 24 extends from the outer end of each horizontal plate portion 23 toward the ceiling side beyond the position of the main plate portion 21. Therefore, the tip of each side plate portion 24 (extension portion) is located closer to the ceiling side (second direction side) than the main plate portion 21. In other words, the tip of the side plate portion 24 (extension portion) is located closer to the ceiling side than the bottom of the recessed portion 20a. In this embodiment, the side plate portion 24 is connected to the inclined plate portion 23b of the horizontal plate portion 23. Note that the side plate portion 24 is not formed on both ends of the frame 20 in the longitudinal direction, and the ends of the frame 20 in the longitudinal direction are open.

[0093] 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 LED 12 to wrap around to the spatial region formed in the vicinity of the cover end portion 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 LED 12 will wrap around to the ceiling side, causing light leakage and light loss.

[0094] Furthermore, 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 at substantially 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.

[0095] 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 (second direction side) 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 of the device 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.

[0096] In this way, the connection portion between the side plate portion 24 and the horizontal plate portion 23 may 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 in the main body 2 of the appliance, or the position of the connection portion between the mounting portion 33 and the extension portion 32 in the cover member 30.

[0097] Also, the length (extension amount) of the side plate portion 24 is longer than the depth of the recess 20a. That is, if the depth of the recess 20a is a [mm] and the length of the side plate portion 24 is b [mm], it is preferable that the relational expression b≧a is satisfied. In this case, the upper limit of the length b of the side plate portion 24 is not particularly limited, but the depth a of the recess 20a and the length b of the side plate portion 24 are preferable to satisfy the relational expression b≦2×a. That is, the ratio of the depth of the recess 20a to the length of the side plate portion 24 is preferable to be 1:2 or less. By satisfying the relational expression b≧a, the strength of the frame 20 is increased and the strength of the entire LED lighting device 3 is improved. This makes it easier to handle the LED lighting device 3 during construction, etc. Also, by satisfying the relational expression b≧a, the length of the side plate portion 24 is increased. This makes it easier to attach the cover member 30 to the frame 20. Also, by satisfying the relational expression b≧a, it is possible to shorten the thickness of the entire frame 20 in the Z-axis direction, and thus to make the frame 20 thinner. It should be noted that the relational expression b≧a does not necessarily have to be satisfied.

[0098] Also, 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, the lower limit of the length b of the side plate portion 24 is not particularly limited. The depth a of the recess 20a is preferably 3 mm or more.

[0099] As shown in FIG. 3, FIG. 4, and FIG. 10, the tip portion of each of the pair of side plate portions 24 is provided with a bent portion 24a formed to be bent. The bent portion 24a constitutes the tip portion of the side plate portion 24. In the present embodiment, the bent portion 24a is a folded portion formed by folding back the tip portion of the side plate portion 24 in the thickness direction. Therefore, the bent portion 24a is composed of a folded portion and a portion (a portion not folded back) facing the folded portion. By providing the bent portion 24a on the side plate portion 24, the strength of the frame 20 can be increased. The bent portion 24a is a hemming bend structure formed by, for example, hemming. Note that the bent portion 24a is not limited to being formed by hemming, and may be a curl bend structure formed by curling and rolling up the tip portion of the side plate portion 24. In addition, the bent portion 24a is formed by folding outward in the width direction, but is not limited thereto, and may be formed by folding inward in the width direction. Moreover, the side plate portion 24 does not necessarily have to have the bent portion 24a formed thereon.

[0100] In this embodiment, the tip of the side plate portion 24 abuts against the receiving metal fitting 7 provided on the fixture body 2. Specifically, the bent portion 24a of the side plate portion 24 abuts against the receiving metal fitting 7. When the LED lighting device 3 is pulled up by the elastic holding member 6 (kick spring) and attached to the fixture body 2, the bent portion 24a of the side plate portion 24 abuts against the receiving metal fitting 7.

[0101] 10, the frame 20 has a protrusion 25 as a portion located closer to the side surface 2f of the instrument body 2 than the attachment portion 33 of the cover member 30. The protrusion 25, which is a portion located closer to the side surface 2f of the instrument body 2 than the attachment portion 33 of the cover member 30, does not have to be entirely located closer to the side surface 2f than the attachment portion 33, as long as it has at least a portion located closer to the side surface 2f than the attachment portion 33.

[0102] In this embodiment, the protrusion 25 is provided on the side plate portion 24 and protrudes from the side plate portion 24. Specifically, the protrusion 25 passes through a through hole 34 provided in the mounting portion 33 of the cover member 30, and protrudes from the mounting portion 33 as well. In other words, the protrusion height of the protrusion 25 (the amount of protrusion from the side plate portion 24) is greater than the thickness of the mounting portion 33, and the tip end portion of the protrusion 25 in the X-axis direction is located closer to the side portion 2f of the appliance body 2 than the outer surface of the mounting portion 33.

[0103] Furthermore, the protrusion 25 is located closer to the side surface 2f than the bent portion 24a of the side plate portion 24 of the frame 20. That is, the tip of the protrusion 25 in the X-axis direction is located closer to the side surface 2f (outside) than the tip of the bent portion 24a in the X-axis direction. Specifically, the height of the protrusion 25 in the X-axis direction is greater than the height of the bent portion 24a in the X-axis direction. Note that the position of the tip of the protrusion 25 in the X-axis direction may be the same as the position of the tip of the bent portion 24a in the X-axis direction. That is, the height of the protrusion 25 in the X-axis direction may be the same as the height of the bent portion 24a in the X-axis direction.

[0104] The protrusion 25 is formed by processing a part of the frame 20. In other words, the protrusion 25 is formed by processing the metal plate that constitutes the frame 20. Specifically, the protrusion 25 is a bridge formed by cutting and raising a part of the metal plate that constitutes the frame 20 into a bridge shape.

[0105] The protrusion 25 is provided at the center of the side plate 24 in the direction in which the side plate 24 extends toward the ceiling (Z-axis direction). In the present embodiment, the protrusion 25 is provided on each of the pair of side plate 24, but this is not limited to this. Specifically, the protrusion 25 may be provided on at least one of the pair of side plate 24.

[0106] Further, the convex portion 25 does not contact the side surface portion 2f of the instrument body 2, and there is a gap between the convex portion 25 and the side surface portion 2f of the instrument body 2. As shown in FIG. 10, when the protruding height of the convex portion 25 is H, the distance (clearance) between the side plate portion 24 of the frame 20 and the side surface portion 2f of the instrument body 2 is C, and the thickness of the attachment portion 33 of the cover member 30 is t, it is preferable that t < H ≦ C. Note that the convex portion 25 may contact the side surface portion 2f of the instrument body 2. For example, the tip portion of the convex portion 25 protruding from the through hole 34 of the attachment portion 33 may contact the side surface portion 2f of the instrument body 2. Further, even if the convex portion 25 does not contact the side surface portion 2f of the instrument body 2 in terms of design, it may contact the side surface portion 2f of the instrument body 2 as a result when the LED lighting device 3 is attached to the instrument body 2. That is, the convex portion 25 can contact the side surface portion 2f of the instrument body 2.

[0107] As shown in FIG. 8, in each of the pair of side plate portions 24, a plurality of convex portions 25 are provided. In each side plate portion 24, the plurality of convex portions 25 are provided intermittently along the Y-axis direction. In the present embodiment, five convex portions 25 are provided along the Y-axis direction.

[0108] The light source unit 10 supported by the frame 20 is covered with the cover member 30. The cover member 30 covers the LED 12 of the light source unit 10. In the present embodiment, the cover member 30 covers all the LEDs 12 in the light source unit 10. Further, 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 to the substrate 11 so as to cover the plurality of LEDs 12. That is, 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.

[0109] The cover member 30 is an example of a translucent cover having translucency, and transmits the light emitted from the light source unit 10 (LED 12). In the present embodiment, the cover member 30 is not only translucent but also a diffusing cover having diffusibility. Therefore, the light of the LED 12 incident on the cover member 30 passes through the cover member 30 while being diffused (scattered) by the cover member 30.

[0110] 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.

[0111] The cover member 30 is attached to the frame 20. Furthermore, the cover member 30 and the frame 20 form a cylindrical body, and the light source unit 10 is housed within this cylindrical body.

[0112] 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 extends toward the inside of the cover member 30, and an attachment portion 33 to which the frame 20 is attached.

[0113] The main part 31 is a main body part 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 part 31 covers the light source unit 10. In other words, the main part 31 faces the light source unit 10. Therefore, the main part 31 has a surface facing the substrate 11 and the LEDs 12.

[0114] The main part 31 constitutes the exterior of the cover member 30. As shown in FIG. 9, the main part 31 is elongated in the Y-axis direction and formed in a gutter shape. The main part 31 has, for example, a flattened, approximately semi-cylindrical shape. Therefore, the main part 31 has an open end face in the shape of an elongated rectangle extending in the Y-axis direction. In addition, the cross-sectional shape of the main part 31 when cut along the X-axis direction has a curved shape that is curved in an approximately arc shape. The shape of the main part 31 is not limited to a barrel-like R shape, and may be an angular shape such as a U-shape, a angular shape with a part of the side surface narrowed, or a cylindrical shape.

[0115] 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 generally D-shaped. Specifically, when viewed from the longitudinal direction of the LED lighting device 3, the outer shape of the main part 31 is generally D-shaped. As described above, the side shape of the LED lighting device 1 consisting of the LED lighting device 3 and the fixture body 2 is also generally D-shaped, and the boundary between the LED lighting device 3 and the fixture body 2 is not noticeable. For this reason, as shown in FIG. 3, when viewed from the Y-axis direction, the outer surface of the main part 31 of the cover member 30 and the outer surface (inclined surface) of the inclined surface portion 2b in the fixture body 2 are flush with each other. In other words, the outer surface of the main part 31 and the outer surface of the inclined surface portion 2b are continuous, and there is no step at the boundary between the outer surface of the main part 31 and the outer surface of the inclined surface portion 2b, or even if there is a step, it is only slight.

[0116] The main part 31 has a cover end 31a which is an outer end located outside the protruding part 20b of the frame 20 in the short direction of the frame 20. Specifically, the cover end 31a is a part located outside the mounting part 33 in the main part 31. The cover end 31a faces the opening edge 2a1 of the recess 2a of the instrument 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 does not abut against the instrument body 2. Specifically, the cover end 31a does not abut against the opening edge 2a1 (instrument body side) of the recess 2a of the instrument body 2. The cover end 31a may abut against the opening edge 2a1.

[0117] The extension portion 32 extends toward the light source unit 10. In this 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 this 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 only needs to have a part of the extension portion 32 extending 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 FIG. 8 and FIG. 9.

[0118] A pair of extension parts 32 are provided. The pair of extension parts 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 parts 32 are provided at positions facing each other in the X-axis direction. In the present embodiment, the pair of extension parts 32 are formed symmetrically with respect to the center of the cover member 30 in the short-side direction in the XZ cross section, but this is not limited thereto.

[0119] Each extension portion 32 covers at least a part of the protruding portion 20b of the frame 20. That is, each extension portion 32 covers at least a part of the protruding portion 20b and faces the main plate portion 21. In the present 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.

[0120] Moreover, 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 generated on the outer end 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 difficult for a shadow to be generated on the outer end of the cover member 30.

[0121] Each extension portion 32 has an outer extension portion 32a located outside the protruding portion 20b, and an inner extension portion 32b extending from the outer extension portion 32a toward the light source unit 10 while covering at least a part of the protruding portion 20b. In this embodiment, the inner extension portion 32b covers the entire protruding portion 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.

[0122] The outer extension portion 32a is a portion located outside the mounting portion 33, and the inner extension portion 32b is a portion located inside the mounting portion 33. In this case, as shown in Fig. 3, the outer extension portion 32a is a portion formed in a flat plate shape, and the inner extension portion 32b is a portion formed so as to bend at the horizontal plate portion 23 of the frame 20. The inner extension portion 32b is bent so as to cover the protruding portion 20b of the frame 20.

[0123] Each extension portion 32 extends from the inner surface of the main portion 31 toward the LED 12 side. Each extension portion 32 extends from a position on the ceiling side (second direction side) of the portion of the protruding portion 20b of the frame 20 located on the inner surface of the main portion 31 closest to the floor (first direction side) toward the light source portion 10 side so as to cover the protruding portion 20b. In this embodiment, the portion of the protruding portion 20b of the frame 20 located closest to the floor side is the parallel plate portion 23a of the horizontal plate portion 23. That is, each extension portion 32 extends from a position on the ceiling side of the parallel plate portion 23a of each protruding portion 20b toward the light source portion 10 side. 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.

[0124] In this way, the extension portion 32 extends toward the light source unit 10 from a position on the ceiling side of the portion of the horizontal plate portion 23 of the frame 20 that is located closest to the floor side, so as to cover the protruding portion 20b of the frame 20. This allows a spatial area that spreads toward the ceiling side outside the protruding portion 20b of the frame 20 to be formed in the vicinity of the cover end 31a of the cover member 30. As a result, even if the protruding portion 20b protruding toward the floor side is provided on the frame 20, the light emitted from the LED 12 that does not pass through the main portion 31 of the cover member 30 and is reflected on the inner surface of the main portion 31 can be made to go around to the spatial area formed in the vicinity of the cover end 31a of the cover member 30. Therefore, the light emitted from the LED 12 can be sufficiently spread to the cover end 31a of the main portion 31 of the cover member 30, so that the light can 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 ends of the cover member 30 in the width direction from becoming dark. In other words, it is possible to reduce the darkness of the ends of the cover member 30 in the width direction caused by the protruding parts 20b of the frame 20.

[0125] 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 side (upward luminous flux) can also be reduced. As a result, the luminous flux of the illumination light emitted from the LED lighting device 3 toward the floor side can be increased, so that the light extraction efficiency of the LED lighting device 3 toward the floor side can be improved. Furthermore, by increasing the luminous flux toward the floor side, the direct illuminance of 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.

[0126] The outer extension portion 32a of the extension portion 32 has a portion that overlaps with the gap between the inner surface of the recess 2a and the mounting portion 33 in the direction toward the floor side or the ceiling side (i.e., in the Z direction). The outer extension portion 32a faces the opening edge 2a1 of the recess 2a. That is, in the Z-axis direction, the outer extension portion 32a overlaps with the opening edge 2a1. Therefore, the outer extension portion 32a is formed so as to span the gap between the inner surface of the recess 2a and the mounting portion 33.

[0127] The portion of the outer extension 32a of each extension 32 facing the opening edge 2a1 and the cover end 31a of the main part 31 form a protrusion protruding outward from the mounting part 33. Specifically, this protrusion is formed in a V-shape in the XZ cross section, and the angle between the direction in which the outer extension 32a extends and the direction in which the main part 31 extends is an acute angle. The outer extension 32a does not protrude outward from the outer end in the width direction of the opening surface of the recess 2a of the device body 2. Specifically, the outer extension 32a does not protrude outward from the opening edge 2a1 of the recess 2a in the Y-axis direction. The connection portion (the apex of the V) between the outer extension 32a and the cover end 31a of the main part 31 is approximately on the same plane as the inclined surface part 2b of the device body 2. As a result, the inclined surface portion 2b of the fixture body 2 and the surface of the main portion 31 of the cover member 30 form a single continuous surface, thereby improving the design of the LED lighting device 3.

[0128] 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.

[0129] When the LED lighting device 3 is attached to the fixture body 2, the cover member 30 does not contact the opening edge 2a1 of the recess 2a of the fixture body 2 in the direction in which the LED lighting device 3 is attached to the fixture body 2 (Z-axis direction), and a gap exists between the cover member 30 and the opening edge 2a1. Specifically, the outer extension portion 32a overlaps with the opening edge 2a1 (fixture body side) of the fixture body 2 in the Z-axis direction, but when the LED lighting device 3 is attached to the fixture body 2, the outer extension portion 32a does not abut against the opening edge 2a1 of the fixture body 2. In other words, when the LED lighting device 3 is stored in the fixture body 2, the outer extension portion 32a and the opening edge 2a1 do not contact each other, and a gap exists between the outer extension portion 32a and the opening edge 2a1.

[0130] Specifically, when the LED lighting device 3 is attached to the fixture body 2 by pulling it up in the Z-axis direction with the elastic holding member 6, which is a kick spring, the bent portion 24a of the side plate portion 24 abuts against the receiving metal fitting 7 before the outer extension portion 32a abuts against the opening edge 2a1. As a result, a gap is formed between the outer extension portion 32a and the opening edge 2a1.

[0131] The outer extension portion 32a may be in contact with the opening edge 2a1. In this case, when the LED lighting device 3 is pulled up by the elastic holding member 6 and attached to the fixture body 2, the outer extension portion 32a may abut against the opening edge 2a1 before the bent portion 24a of the side plate portion 24 abuts against the receiving metal fitting 7. In other words, the LED lighting device 3 may be attached to the fixture body 2 by the outer extension portion 32a abutting against the opening edge 2a1.

[0132] At least a part of the extension portion 32 has a shape that follows a part of the frame 20. In this embodiment, at least a part 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.

[0133] As shown in Fig. 3, the inner extension portion 32b is bent so as to protrude toward the floor side. That is, the inner extension portion 32b is formed to have a protruding portion that protrudes toward the floor side, 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.

[0134] 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 protruding portion 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 protruding portion 20b.

[0135] The inner extension portion 32b has a first plate portion 32b1 that faces the protrusion 20b of the frame 20, a second plate portion 32b2 that extends from a position beyond the protrusion 20b toward the light source unit 10, and a third plate portion 32b3 that stands upright from the second plate portion 32b2 toward the ceiling side.

[0136] 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.

[0137] 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.

[0138] The third plate portion 32b3 is a vertical plate portion standing from the tip of the second plate portion 32b2 toward the ceiling side. That is, the third plate portion 32b3 is standing on the main plate portion 21 of the frame 20. Specifically, the third plate portion 32b3 is a vertical portion 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. That is, 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 lower than the height of the protruding portion 20b formed on the main plate portion 21 of the frame 20 (the position of the horizontal plate portion 23 in this embodiment).

[0139] The inner extension portion 32b has an inner portion in the short side direction of the cover member 30 with a gentler inclination than the short side direction of the cover member 30. That is, the inclination of the portion on the light source unit 10 side is gentler than the inclination of the portion on the mounting unit 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. That is, 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.

[0140] 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.

[0141] The third plate portion 32b3 of the inner extension 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 as to slope toward the substrate 11.

[0142] The tip of the extension portion 32 abuts against the main plate portion 21 of the frame 20. Specifically, the tip of the inner extension portion 32b abuts against the main plate portion 21 of the frame 20. In other words, the third plate portion 32b3 of the inner extension portion 32b abuts against the main plate portion 21 of the frame 20. The tip of the inner extension portion 32b abuts against the main plate portion 21 of the frame 20 in a pressed state.

[0143] The extension portion 32 pressed against the frame 20 is elastically deformed. In other words, the extension portion 32 is elastically deformed, and the third plate portion 32b3 is pressed against the main plate portion 21 of the frame 20 by the reaction force. Therefore, the attitude of the extension portion 32 with respect to the frame 20 is different before the cover member 30 is attached to the frame 20 and after the cover member 30 is attached to the frame 20.

[0144] Each extension portion 32 may be disposed outside the directional characteristic (light distribution angle) of the LED 12. For example, since the light distribution angle (1 / 2 beam angle) of the LED 12 is 120°, the opening angle (inclination angle of the second plate portion 32b2) of the pair of extension portions 32 may be 120° or more. This reduces the loss of the 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 may be 160° or more. The upper limit of the opening angle of the pair of second plate portions 32b2 is, for example, 170°. The light extraction rate can be further improved by making the extension portion 32 white (highly reflective and non-transmissive) by two-color molding.

[0145] 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 may house a crimped portion when the frame 20 and another metal component are crimped together. 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 and the frame 20 together.

[0146] Additionally, the spatial region S1 may house functional components or internal electric wires that are wired in a factory when the LED lighting device 3 is manufactured.

[0147] The functional parts stored 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 human 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 other than 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 on and off the LED 12 or adjusting the brightness and color, or a setting signal for performing various settings of the LED lighting device 3. The second light source is 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 wide light distribution), a color light source for directing (for example, LED light sources of red, blue, green, etc.), or an emergency light source that is turned on in an emergency. When an emergency light source is used as the second light source, the cover and / or the cover member 30 that covers the second light source may be made of a flame-retardant material such as glass. Note that wireless is not limited to a specific frequency band, and 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 by wireless communication, instead of a wired connection by an electric wire.

[0148] 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. Among 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.

[0149] Even if a foreign object such as an insect or dust invades the spatial region S1, the distance between the spatial region S1 and the main portion 31 is long, so that a shadow is unlikely to be created by the foreign object present in the spatial region S1. In addition, 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 that if an insect is present in this gap region, it is likely to be a shadow, but since this gap region is small, it is difficult for insects to accumulate. Even if an insect invades this gap region, the insect has propulsion ability, so the insect will move from this gap region toward the spatial region S1 and enter the spatial region S1 where a shadow is unlikely to be created. In addition, since the entrance (exit of the gap region) of the spatial region S1 is narrow, once the insect enters the spatial region S1, the insect will not exit the spatial region S1. In other words, the insect can be kept in the spatial region S1 where a shadow is unlikely to be created. In addition, this is not the case when the extension portion 32 is made of an opaque material such as white resin.

[0150] 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 side. The mounting portion 33 is attached to a pair of side plate portions 24 of the frame 20. When the cover member 30 is fixed to the frame 20, the mounting portion 33 of the cover member 30 is attached to the frame 20 so as to embrace the side plate portions 24 of the frame 20 from the width direction of the cover member 30, but is not limited thereto. For example, the cover member 30 may be attached to the frame 20 by inserting the cover member 30 from an end portion in the longitudinal direction of the frame 20 and sliding the cover member 30.

[0151] 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 in an elongated shape along the Y-axis direction. The pair of mounting portions 33 also have the same length in the Y-axis direction. The length of the mounting portion 33 in the Z-axis direction is shorter than the length of the side plate portion 24 of the frame 20 in the Z-axis direction, and the tip of the mounting portion 33 is located closer to the floor than the tip of the side plate portion 24 (the tip of the bent portion 24a).

[0152] 10, when the LED lighting device 3 is attached to the fixture body 2, each of the pair of mounting portions 33 is located between the side plate portion 24 of the frame 20 and the side surface portion 2f of the fixture body 2. In other words, the mounting portions 33 are located outside (on the side surface portion 2f side) of the side plate portion 24 of the frame 20. The mounting portions 33 and the side surface portion 2f of the fixture body 2 are not in contact with each other, and a gap exists between the mounting portions 33 and the side surface portion 2f.

[0153] As shown in Figs. 10 and 11, the mounting portion 33 is provided with a through hole 34. The protrusions 25 provided on the side plate portions 24 of the frame 20 are inserted into the through hole 34. Therefore, the through hole 34 is provided corresponding to the protrusions 25 provided on the side plate portions 24 of the frame 20. Specifically, since a plurality of protrusions 25 are provided on each of the pair of side plate portions 24, a plurality of through holes 34 are provided on each of the pair of mounting portions 33. The plurality of through holes 34 are provided intermittently along the Y-axis direction, similar to the protrusions 25. In this embodiment, five through holes 34 are provided along the Y-axis direction, similar to the protrusions 25.

[0154] The cover member 30 is made of a translucent resin material such as acrylic or polycarbonate, or a material having translucency such as a glass material. In this embodiment, the cover member 30 is made of a translucent resin material. In this case, the cover member 30 can be a milky white cover member with a light diffusing material dispersed therein. Such a cover member 30 can be produced by resin molding a translucent resin material mixed with a light diffusing material into a predetermined shape. As the light diffusing material, light reflective fine particles such as silica particles can be used.

[0155] The cover member 30 may be configured by forming a milky light diffusion film containing a light diffusion material or the like on the surface (inner or outer surface) of the transparent cover, rather than dispersing a light diffusion material inside. The cover member 30 may also be configured to have light diffusion properties by performing a diffusion process, rather than using a light diffusion material. For example, the cover member 30 may be configured to have light diffusion properties by performing a surface treatment such as a graining process 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 diffusion process, a light diffusion material may be further contained in order to enhance light diffusion properties.

[0156] In this embodiment, the main part 31, the extension part 32, and the attachment part 33 constituting the cover member 30 are integrally formed. Therefore, the main part 31, the extension part 32, and the attachment part 33 are made of the same material. The main part 31, the extension part 32, and the attachment part 33 all have the same material strength, but this is not limited to this. For example, the material strengths of the main part 31, the extension part 32, and the attachment part 33 may be different. In this case, it is preferable that the material strength of the main part 31 is greater than the material strength of the extension part 32 and the material strength of the attachment part 33. This configuration can suppress deformation of the main part 31. In other words, the shape of the main part 31 is stabilized. This can reduce the effect of deformation of the cover member 30 on the optical performance.

[0157] The thicknesses of the main part 31, the extension part 32, and the attachment part 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 part 31 may be 1 mm or less. The main part 31, the extension part 32, and the attachment part 33 all have the same thickness, but this is not limited to this. For example, the thicknesses of the main part 31, the extension part 32, and the attachment part 33 may be different. In this case, it is preferable that the thickness of the main part 31 is larger than the thickness of the extension part 32 and the thickness of the attachment part 33. This configuration can suppress deformation of the main part 31. In other words, the shape of the main part 31 is stabilized. This can reduce the effect of deformation of the cover member 30 on the optical performance.

[0158] In the present embodiment, the main portion 31, the extension portion 32, and the mounting portion 33 are made of the same resin material, but this is not limited thereto. 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 can be made of different resin materials. For example, the main portion 31 can be made of a translucent resin material, and a part or all of the extension portion 32 can be made of a white or milky white resin material. The mounting portion 33 is 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 can 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 can be made of a white or milky white resin material. In this way, by making a part or the whole of the extension portion 32 white or milky white, the extension portion 32 (for example, the inner extension portion 32b) can have a reflecting function. As a result, the light emitted from the LED 12 that reaches the extension portion 32 can be reflected by the inner extension portion 32b and made to enter the main portion 31. As a result, the light extraction efficiency of the LED lighting device 3 can be improved. Therefore, since the direct illuminance of the LED lighting device 1 can be improved, when a plurality of LED lighting devices 1 are installed, the number of LED lighting devices 1 installed can be reduced. In addition, by making the mounting portion 33 white or milky white, it is possible to reduce the leakage of light into the inside of the device main body 2. The cover member 30 thus partially made of a white or milky white resin material can be formed by two-color molding. The extension portion 32 may be molded by two layers of 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 (layer laminated on the base layer) may be made of a white or milky white resin material.

[0159] The cover member 30 has both ends in the longitudinal direction thereof closed. In this embodiment, both ends in the longitudinal direction 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 the end caps 40 are attached to both ends in the longitudinal direction of the cylindrical body. A spatial region S2 is formed between the cover member 30 and the frame 20. This spatial region S2 is a region (insect-proof region) configured to prevent foreign objects such as insects and dust from entering, and is a region surrounded by the main part 31 of the cover member 30 and the main plate part 21 of the frame 20. Specifically, the spatial region S2 is a region closed by the main part 31 and the extension part 32 of the cover member 30, the main plate part 21 of the frame 20, and the end caps 40. The light source unit 10 is disposed in this spatial region S2.

[0160] The end cap 40 is a component for preventing foreign objects such as insects and dust from entering the inside of the cylinder formed by the cover member 30 and the frame 20. The end cap 40 is provided to close the open end of the cylinder formed by the frame 20 and the cover member 30. In other words, the end cap 40 is attached to the cylinder so as to cover the open end of the cylinder formed by the frame 20 and the cover member 30, and closes the open end of the cylinder. This makes it possible to prevent foreign objects such as insects and dust from entering the inside of the cylinder 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.

[0161] 5 to 7, 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.

[0162] As shown in FIG. 9, the end cap 40 provided at one end in the longitudinal direction of the cover member 30 is a first end cap 40a, and the end cap 40 provided at the other end in the longitudinal direction 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 part. That is, the shape of the second end cap 40b is the same as the shape of the first end cap 40a. This can reduce costs. The first end cap 40a and the second end cap 40b are arranged in an opposite relationship in the longitudinal direction (Y-axis direction) of the cover member 30.

[0163] As shown in FIG. 9, the end cap 40 has a main portion 41, a fitting portion 42 for fitting the cover member 30, an inner protrusion portion 43 that protrudes inward from the main portion 41, and an outer protrusion portion 44 that protrudes outward from the main portion 41.

[0164] The main portion 41 is a cap main body that serves as the main body of the end cap 40, and mainly 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. In this manner, the main portion 41 having translucency allows light from the light source unit 10 to pass through. In other words, the 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.

[0165] Specifically, the end cap 40 is entirely 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 the translucent and diffusive end cap 40, the light of the LED 12 incident on the end cap 40 is diffused (scattered) by the end cap 40 and passes through the end cap 40.

[0166] The end cap 40 is made of a light-transmitting resin material such as acrylic or polycarbonate, or a light-transmitting material such as a glass material. In this embodiment, the end cap 40 is made of a light-transmitting 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 light-transmitting resin material mixed with a light diffusing material into a predetermined shape. As the light diffusing material, light-reflecting fine particles such as silica particles can be used.

[0167] The end cap 40 having translucency and diffusibility may be formed by forming a milky white light diffusion film containing a light diffusion material or the like on the surface (inner surface or outer surface) of a transparent end cap, instead of dispersing a light diffusion material inside. The end cap 40 may be configured to have light diffusion properties by performing a diffusion process, instead of using a light diffusion material. For example, the end cap 40 may be configured to have light diffusion properties by performing 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 diffusion process, the end cap 40 may further contain a light diffusion material in order to enhance light diffusion properties.

[0168] The end cap 40 may be made of the same material as the cover member 30 or may be made of a material different from that of the cover member 30.

[0169] Furthermore, the main portion 41 may not be translucent. In this case, the entire end cap 40 may not be translucent. For example, an example of a non-translucent end cap 40 is one that has light blocking properties (light absorbing properties) 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 translucent portion and a non-translucent portion.

[0170] The shape of the main part 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 part 41 in the Z-axis direction is curved in an arc shape so as to follow the shape of the cover member 30. The thickness of the plate-shaped main part 41 is constant. As an example, the thickness of the main part 41 is 1 mm to 5 mm, but is not limited to this. Note that the thickness of the main part 41 is constant over the entire area of ​​the main part 41, but is not limited to this.

[0171] Moreover, the shape of the main part 41 in front view is, for example, a shape of a flattened semicircle as a whole. Therefore, the outer shape of one side of the main part 41 in the Z-axis direction is a curved shape curved like an arc so as to follow the shape of the cover member 30. In this embodiment, when viewed from the longitudinal direction of the LED lighting device 3, the end cap 40 is D-shaped as a whole. Specifically, when viewed from the longitudinal direction of the LED lighting device 3, the main part 41 is D-shaped as a whole. As described above, the side shape of the LED lighting device 1 consisting of the LED lighting device 3 and the device main body 2 is also D-shaped as a whole, and the boundary between the LED lighting device 3 and the device main body 2 is not noticeable.

[0172] The main part 41 has an inner side surface 41a and an outer side surface 41b as surfaces in the thickness direction of the main part 41. The inner side surface 41a is the surface on the light source unit 10 side (LED 12 side), and the outer side surface 41b is the surface on the opposite side to the light source unit 10 side (LED 12 side). The outer side surface 41b is an exposed surface that can be seen by a user. As described above, in this embodiment, the entire main part 41 has translucency, so that the light emitted from the LED 12 and entering the main part 41 passes through the entire main part 41. Therefore, the inner side surface 41a of the main part 41 is a light entrance surface where the light of the LED 12 enters, and the outer side surface 41b of the main part 41 is a light exit surface where the light of the LED 12 exits to the outside.

[0173] The main portion 41 is curved in a concave shape as a whole so as to be recessed inward. As an example, the inner side surface 41a and the outer side surface 41b of the main portion 41 are parabolic. That is, the inner side surface 41a and the outer side surface 41b are curved in each of the X-axis direction and the Z-axis direction. In this embodiment, the main portion 41 is generally inclined so that the upper portion (ceiling side portion) is recessed inward from the lower portion (floor side portion) in the height direction which is the Z-axis direction, and has a curved shape as a whole so that the central portion is recessed inward from the peripheral portions in the width direction which is the X-axis direction.

[0174] The main portion 41 does not have to be curved so as to recede inward (i.e., convex inward). For example, the main portion 41 may be curved so as to convex outward. The main portion 41 does not have to be curved. For example, the main portion 41 may be an inclined plate or a vertical plate that is not inclined and is parallel to the Z-axis direction.

[0175] 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 in the main portion 41. Specifically, the fitting portion 42 is provided in the end of the main portion 41 on the floor side. The fitting portion 42 is a protruding portion protruding from the inner surface 41a of the main portion 41. The fitting portion 42 is provided in the end of the main portion 41 on the floor side (the side opposite to the side of the instrument body 2). Specifically, the fitting portion 42 is formed in a curved portion of the outer periphery of the main portion 41. That is, 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 erected on the inner surface 41a of the main portion 41, and is formed so as 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.

[0176] It is not necessary for the longitudinal end of the main portion 31 of the cover member 30 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.

[0177] The inner protrusion 43 is a protrusion that protrudes from the inner side surface 41a of the main portion 41 (cap main body). The inner protrusion 43 protrudes inward in the longitudinal direction of the cover member 30 (the Y-axis direction).

[0178] The inner protrusion 43 is formed at the end of the main part 41 on the ceiling side. The inner protrusion 43 is formed to stand on the inner surface of the main part 41. The inner protrusion 43 protrudes to face the main plate part 21 of the frame 20. Since the main plate part 21 extends in the X-axis direction, as shown in Fig. 9, the inner protrusion 43 also extends in the X-axis direction.

[0179] The outer protrusion 44 is a protruding piece protruding 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 in a convex shape 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.

[0180] 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.

[0181] 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 in a protruding shape across the entire width of the end of the main part 41 on the appliance body 2 side, and the outer protrusion 44 overlaps the opening edge 2a2 across the entire length of the appliance body 2 in the short side direction (X-axis direction).

[0182] 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 from an oblique direction or directly below (Z-axis direction), the inside of the LED lighting fixture 1 is difficult to see through the gap between the end cap 40 and the opening edge 2a2. Therefore, the appearance of the LED lighting fixture 1 can be improved, and an LED lighting fixture 1 with excellent design can be realized. Note that, even if the cover member 30 thermally shrinks when the light is turned off, it is preferable that the outer protrusion 44 overlaps the opening edge 2a2 of the fixture body 2.

[0183] 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 parts other than 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 the light of the LED 12 to enter the outer protrusion 44 and cause the outer protrusion 44 to emit light. In addition, by making the outer protrusion 44 white, the outer protrusion 44 can be made opaque. This makes it possible to make the outer protrusion 44 less noticeable. In particular, by making the color of the outer protrusion 44 the same as the color of the frame 20 or the fixture body 2, the outer protrusion 44 can be made less noticeable. The end cap 40 having partially different resin materials in this way can be formed by two-color molding.

[0184] An elastic member 50 is attached to the end cap 40. That is, 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 for fixing the elastic member 50 to the end cap 40, improving the ease of assembly. Note that the elastic member 50 may be attached to the end cap 40 by a fixing member such as an adhesive to a separately manufactured end cap 40, instead of being attached to the end cap 40 by integral molding.

[0185] The elastic member 50 is attached to the end of the end cap 40 on the ceiling side. In this embodiment, the elastic member 50 is attached to the inner protrusion 43. The elastic member 50 is an elastic body made of a resin material or the like, and is elastically deformed. 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 be a foam molded product.

[0186] The elastic member 50 functions as a packing member and is provided so as to fill the gap between the ceiling side portion of the end cap 40 and the main plate portion 21 of the frame 20. Since the main plate portion 21 extends in the X-axis direction, as shown in FIG. 9, the elastic member 50 also extends in the X-axis direction. In this embodiment, the elastic member 50 is formed in a thin plate shape. As shown in FIG. 5, the thin plate-shaped elastic member 50 is provided in the gap between the ceiling side portion of the end cap 40 and the main plate portion 21 of the frame 20 in an inclined state. By providing the elastic member 50, it is possible to enhance the effect of suppressing the intrusion of foreign objects such as insects into the spatial region S2 between the cover member 30 and the frame 20 (insect-repellent effect). In this embodiment, the elastic member 50 is provided, but the elastic member 50 may not 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, 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.

[0187] The end cap 40 thus configured is fixed to the cover member 30. In this case, the end cap 40 is provided so that no gap is generated between the end cap 40 and the cover member 30. Specifically, the end cap 40 is fitted into the open end of the cover member 30 so that the fitting portion 42 contacts the inner surface of the cover member 30. This makes the outer peripheral edge of the main portion 41 of the end cap 40 and the outer peripheral surface of the cover member 30 form a continuous surface.

[0188] The end cap 40 and the cover member 30 may be fixed to each other with an adhesive or ultrasonic welding. Alternatively, the end cap 40 and the cover member 30 may be provided with a locking structure such as a claw or a recess to join the end cap 40 and the cover member 30.

[0189] 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 is also a part or the whole of the recess 2a of the fixture body 2.

[0190] 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 biased toward the short-side direction of the LED lighting device 3 (short-side direction of the frame 20) in the spatial region S3. Specifically, the power supply device 4 is biased toward the hook metal fitting 5 side (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 in the circuit case 4c.

[0191] Electric 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 electric wires used in the LED lighting device 3 include construction wires (construction wiring) that are wired when the LED lighting fixture 1 is installed on a ceiling or the like, and internal fixture wires (internal fixture wiring) that are wired in a factory when the LED lighting device 3 is manufactured.

[0192] Examples of the construction wires include power wires such as VVF cables and signal wires such as dimming signal wires. The construction wires such as power wires and signal wires are drawn from the ceiling, for example, and connected to predetermined locations of the LED lighting fixture 1 when the LED lighting fixture 1 is installed. For example, the power wire such as the VVF cable is connected to the power terminal block 8, and the dimming signal wire is connected to the dimming terminal block 9. Examples of the internal wires disposed in the spatial region S3 include the internal wires described above. In addition, functional components such as the above-mentioned function expansion module may be stored in the spatial region S3.

[0193] Since a lead-in wiring may be installed inside the LED lighting fixture 1, it is desirable to provide a 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-in 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.

[0194] As an example, FIG. 4 shows an example in which a VVF cable 71 and a signal line 72 are arranged in the spatial region S3 as the construction electric wires. In this case, in the present embodiment, the power supply device 4 is arranged biased in the spatial region S3, so that the ceiling side of one of the pair of horizontal plate parts 23 of the frame 20 (the right horizontal plate part 23 in FIG. 4) is opened. As a result, as shown in FIG. 4, in the region in the spatial region S3 in which the power supply device 4 exists, the region on one side in the short direction of the LED lighting device 3 is larger than the region on the other side. That is, one side 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. For this reason, it is preferable to arrange the construction electric wires in the wider region of the two regions on both sides of the power supply device 4. In particular, in the present embodiment, the length (height) of the side plate part 24 of the frame 20 is short, so that the space in the vertical direction of the spatial region S3 around the side plate part 24 can be further widened. Therefore, the construction electric wires can be arranged by effectively utilizing the expanded spatial region S3. For example, the construction electric wires can be arranged close to the ceiling end of the spatial region S3 on the side of the fixture body 2. In this way, the construction electric 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 electric wires, thereby preventing a gap from being generated between the fixture body 2 and the LED lighting device 3.

[0195] In addition, 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 line 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.

[0196] The power supply device 4 does not have to be disposed biasedly in the width direction of the frame 20, but may be disposed in the center of the width direction of the frame 20. In this case, the construction electric wires and the electric wires inside the fixture may be disposed on both sides of the power supply device 4. In other words, a wiring insertion portion may be provided on both sides of the power supply device 4.

[0197] Furthermore, functional parts 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, an end portion 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 have compatibility so that it can be replaced with a different function.

[0198] In the LED lighting device 3 according to this embodiment, as shown in Fig. 3 and Fig. 4, a spatial area is formed on the ceiling side of the protrusion 20b formed on the frame 20 by the protrusion 20b. Components such as functional parts or electric wires in the fixture can also be stored in this spatial area. Note that the method of utilizing this spatial area is not limited to storing components such as functional parts or electric wires in the fixture, and this spatial area can also be used for centering metal fittings, positioning metal fittings, guiding metal fittings, earthing, etc.

[0199] The LED lighting device 3 configured in this manner is stored 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.

[0200] As shown in FIG. 3, the hook fitting 5 is disposed 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 an end of the frame 20. As an example, the hook fitting 5 is fixed to the frame 20 by a fixing member such as a screw, and extends so as to protrude outward from the frame 20. The hook fitting 5 is hooked to the fixture 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 body 2, and the hook fitting 5 is hooked to this slit 2c.

[0201] The elastic holding member 6 is a component for mounting the LED lighting device 3 to the fixture body 2. In this embodiment, the elastic holding member 6 is an elastic member. Specifically, the elastic holding member 6 is 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 (back surface) of the main plate 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 to 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 a mounting 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.

[0202] 2, two hook fittings 5 ​​and two elastic retaining members 6 are provided at each end of the frame 20 in the longitudinal direction, but this is not limited to this. Also, the hook fittings 5 ​​and the elastic retaining members 6 are provided at positions facing each other in the lateral direction of the frame 20, but this is not limited to this.

[0203] 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.

[0204] When attaching the LED lighting device 3 to the fixture body 2 installed on the ceiling 100, first, as shown in FIG. 12(a), the hook bracket 5 is hooked onto the slit 2c (see FIG. 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. One end of the elastic retaining member 6, which is a kick spring, is engaged with the receiving bracket 7 fixed to the fixture body 2.

[0205] Next, as shown in FIG. 12(b), the hook fitting 5 is pushed deep into the slit 2c while rotating the LED lighting device 3 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.

[0206] At this time, 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 close to the rotation axis side when rotating the LED lighting device 3. In this way, by disposing the heavy power supply device 4 close to the rotation axis side, it is possible to rotate the LED lighting device 3 with a small force.

[0207] 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 Fig. 12. This allows the LED lighting device 3 to be attached to the fixture body 2. At this time, the LED lighting device 3 is pulled up by the spring elastic force of the elastic holding member 6 (kick spring), and the tip portion (bent portion 24a) of the side plate portion 24 of the frame 20 abuts against the receiving metal fitting 7, and the position of the LED lighting device 3 in the Z-axis direction is determined.

[0208] When removing the LED lighting device 3 from the fixture body 2, the above-mentioned operations can be reversed to remove the LED lighting device 3 from the fixture body 2. For example, the LED lighting device 3 can be removed from the fixture body 2 by rotating the LED lighting device 3 while pulling it down.

[0209] As described above, the LED lighting device 3 according to this embodiment includes the frame 20 having the side plate portion 24, and the cover member 30 having the mounting portion 33 attached to the side plate portion 24 of the frame 20. The frame 20 is provided with the protrusion 25 as a portion located closer to the side surface portion 2f of the fixture body 2 than the mounting portion 33. Specifically, the protrusion 25 is provided on the side plate portion 24 of the frame 20.

[0210] This configuration can prevent the attachment portion 33 of the resin cover member 30 from coming into contact with the side surface portion 2f of the metal appliance body 2. In other words, even if the attachment portion 33 approaches the side surface portion 2f, the protrusion 25 of the frame 20 comes into contact with the side surface portion 2f before the attachment portion 33 comes into contact with the side surface portion 2f. This can prevent abnormal noise caused by contact between the attachment portion 33 of the cover member 30 and the appliance body 2.

[0211] In addition, even if the protrusion 25 of the frame 20 and the side portion 2f of the device body 2 come into contact with each other, the protrusion 25 and the side portion 2f are both made of a metal material, so that abnormal noise is unlikely to occur. In other words, since the protrusion 25 and the side portion 2f are made of a metal material, the thermal expansion difference between the protrusion 25 and the side portion 2f is small, and the protrusion 25 and the side portion 2f are easily slippery between the metals, so that stick-slip is unlikely to occur. Therefore, even if the protrusion 25 and the side portion 2f come into contact with each other, abnormal noise is unlikely to occur. In particular, in this embodiment, the protrusion 25 is not formed over the entire length in the Y-axis direction but is formed intermittently, so that abnormal noise is unlikely to occur even if the protrusion 25 and the side portion 2f come into contact with each other.

[0212] In the LED lighting device 3 according to the above embodiment, the bent portion 24a of the side plate portion 24 of the frame 20 is abutted against the receiving metal fitting 7. In other words, the receiving metal fitting 7 serves as the abutment portion on the side of the fixture body 2, and the upper end portion of the side plate portion 24 of the frame 20 abuts against the receiving metal fitting 7 (abutment portion) in the Z-axis direction. This allows the LED lighting device 3 to be positioned in the Z-axis direction.

[0213] Moreover, in the LED lighting device 3, a gap is provided between the opening edge 2a1 of the fixture body 2 and the outer extension 32a of the cover member 30 by abutting the bent portion 24a of the side plate portion 24 of the frame 20 against the receiving metal fitting 7. In other words, the outer extension 32a of the cover member 30 does not contact the opening edge 2a1 of the fixture body 2. This makes it possible to suppress abnormal noise caused by contact between the opening edge 2a1 of the fixture body 2 and the cover member 30. In addition, by providing a gap between the opening edge 2a1 of the fixture body 2 and the outer extension 32a of the cover member 30, air convects through this gap, so that heat generated by the LED lighting device 3 can be effectively dissipated. Furthermore, in this embodiment, the cover end 31a of the cover member 30 and the inclined surface portion 2b of the fixture body 2 are streamlined, making it difficult to remove the LED lighting device 3, but by providing a gap between the opening edge 2a1 of the fixture body 2 and the outer extension portion 32a of the cover member 30, the LED lighting device 3 can be easily removed by hooking a nail or finger into this gap. From the viewpoint of removing the LED lighting device 3 with a nail or finger, it is preferable that the gap between the opening edge 2a1 of the fixture body 2 and the outer extension portion 32a of the cover member 30 be at least 1 mm.

[0214] In addition, in this embodiment, a through hole 34 is provided in the mounting portion 33 of the cover member 30, and the protrusion 25 penetrates this through hole 34 and is located closer to the side portion 2f of the appliance body 2 than the mounting portion 33.

[0215] With this configuration, even if the pair of side portions 2f of the fixture body 2 are deformed inwardly due to tightening of the bolts 101 when the fixture body 2 is fixed to the ceiling, causing the convex portion 25 to come into contact with the side portions 2f, no stress is applied to the mounting portion 33 of the cover member 30, and the mounting portion 33 of the cover member 30 is prevented from being clamped and compressed between the side panel portion 24 of the frame 20 and the side portion 2f of the fixture body 2.

[0216] Furthermore, by inserting the protrusion 25 of the frame 20 into the through hole 34 of the cover member 30, the protrusion 25 functions as an attachment structure for the cover member 30, and the protrusion 25 gets caught on the edge of the through hole 34, thereby preventing the cover member 30 from coming off the frame 20.

[0217] In this embodiment, as shown in FIG. 10, if the protruding height of the convex portion 25 is H, the distance between the side plate portion 24 of the frame 20 and the side surface portion 2f of the device body 2 is C, and the thickness of the mounting portion 33 of the cover member 30 is t, then t <H≦Cになっている。

[0218] This prevents the mounting portion 33 from being pinched between the side plate portion 24 and the side surface portion 2f. Furthermore, the presence of a gap at least one between the mounting portion 33 and the side plate portion 24 and between the mounting portion 33 and the side surface portion 2f prevents the mounting portion 33 from being fixed firmly between the side plate portion 24 and the side surface portion 2f, thereby effectively suppressing the generation of abnormal noise.

[0219] In the present embodiment, the protrusion 25 is provided in the center of the side plate 24 in the Z-axis direction.

[0220] With this configuration, even if the pair of side surface portions 2f of the device body 2 are deformed, or the frame 20, the cover member 30, and the device body 2 are warped, undulated, or have dimensional variations, it is possible to effectively prevent the protrusions 25 from coming into contact with the side surface portions 2f. Moreover, by providing the protrusions 25 at the center of the side plate portions 24, the cover member 30 can be stably supported by the protrusions 25.

[0221] In this embodiment, the protrusion 25 is a part of the frame 20. Specifically, the protrusion 25 is formed by processing a part of the frame 20.

[0222] This configuration allows the protrusion 25 to be easily formed on the frame 20. Specifically, the protrusion 25 is a bridge formed by cutting and raising a part of the frame 20 in a bridge shape. In this case, in this embodiment, the protrusion 25 is a horizontal bridge whose extension direction is the Y-axis direction. This makes it possible to effectively prevent the cover member 30 from coming off the frame 20.

[0223] The protrusion 25, which is a bridge, is not limited to a horizontal bridge. Specifically, as shown in FIG. 13, the protrusion 25A provided on the frame 20A may be a vertical bridge whose extension direction is the Z-axis direction. By making the protrusion 25A a vertical bridge, the cover member 30 can be easily attached to the frame 20A, and the centering effect in the longitudinal direction of the cover member 30 can be improved, compared to a horizontal bridge. In this case, the through hole 34 provided in the attachment portion 33 of the cover member 30 is elongated vertically to match the protrusion 25A, which is a vertical bridge.

[0224] In the above mounting form, the protrusion 25 is a bridge formed by cutting and raising a part of the frame 20 in a bridge shape, but this is not limited thereto. For example, as shown in FIG. 14, the protrusion 25B provided on the frame 20B may be a dowel formed by pushing up a part of the frame 20B. The protrusion 25B, which is a dowel, can be formed by pushing up a part of the metal plate constituting the frame 20B by press processing. In this case, the protrusion 25B in FIG. 14 is a hemispherical spherical dowel. This allows the protrusion 25B to be easily fitted into the through hole 34 provided in the mounting portion 33 of the cover member 30, so that the cover member 30 can be easily attached to the frame 20B. In addition, by making the protrusion 25B a spherical dowel, even if the protrusion 25B comes into contact with the side surface portion 2f of the device main body 2, the coating film on the side surface portion 2f is unlikely to peel off.

[0225] In addition, in FIG. 14, the convex portion 25B is a spherical dowel, but is not limited thereto. Specifically, as shown in FIG. 15, the convex portion 25C provided on the frame 20C may be a half-moon dowel cut and raised into a hemispherical shape. In this case, as shown in FIG. 15, by forming the convex portion 25C so that the hemispherical portion of the half-moon dowel is on the tip side (ceiling side) of the side plate portion 24, the convex portion 25C can be easily fitted into the through hole 34 of the cover member 30, so that the cover member 30 can be easily attached to the frame 20C, and even if the convex portion 25C contacts the side portion 2f of the fixture body 2, the paint film on the side portion 2f can be made less likely to peel off. In addition, as in the frame 20D shown in FIG. 16, the convex portion 25D may be formed so that the hemispherical portion of the half-moon dowel is on the opposite side (floor side) to the tip side of the side plate portion 24. This allows the protrusion 25D to easily catch on the edge of the through hole 34 of the attachment portion 33, thereby preventing the cover member 30 from coming off the frame 20D.

[0226] Also, like the frame 20E shown in Fig. 17, the protrusion 25E may be a claw piece (cut-and-raised piece) formed by cutting and raising a part of the frame 20E into an L-shape. In this case, as shown in Fig. 18(a), the protrusion 25E may be cut and raised in the Z-axis direction, or as shown in Fig. 18(b), the protrusion 25E may be cut and raised in the Y-axis direction. Note that the protrusion 25E, which is a claw piece, is cut and raised in a rectangular shape, but the shape of the protrusion 25E is not limited to a rectangular shape.

[0227] 13 to 18, the protrusions 25A to 25E are formed by processing a part of the frame, but are not limited thereto. For example, as shown in FIG. 19, the protrusion 25F may be a screw provided separately from the frame 20F, rather than being a part of the frame 20F. The protrusion 25F, which is a screw, is screwed into the side plate 24 of the frame 20F. In this case, in FIG. 19, the protrusion 25F, which is a screw, is screwed into the side plate 24 so that the screw head is located on the outer surface side of the side plate 24, but as shown in FIG. 20, the protrusion 25G, which is a screw, may be screwed into the side plate 24 so that the screw head is located on the inner surface side of the side plate 24. In FIG. 19, the screw head of the protrusion 25F, which is a screw, is inserted into the through hole 34 of the cover member 30, but in FIG. 20, the screw shaft (screw foot) of the protrusion 25G, which is a screw, is inserted into the through hole 34 of the cover member 30. 20, the screw shaft of the protrusion 25G, which is a screw, may have a rounded tip. This makes it possible to prevent the coating film on the side surface 2f from peeling off even if the screw shaft comes into contact with the side surface 2f of the instrument body 2.

[0228] In the above embodiment, as shown in (a) of FIG. 21, only one type of convex portion 25, which is a horizontal bridge, is provided on the side plate portion 24 of the frame 20, but this is not limited thereto. In other words, multiple types of convex portions having different roles depending on their shapes may be provided on the side plate portion 24. For example, as shown in (b) of FIG. 21, the side plate portion 24 may be provided with a convex portion 25, which is a horizontal bridge that plays a role in preventing the cover member 30 from coming off, and a convex portion 25A, which is a vertical bridge that plays a role in making it easy to attach to the cover member 30. Also, as shown in (c) of FIG. 21, the side plate portion 24 may be provided with convex portions 25C and 25D, which are half-moon dowels with different orientations. In this case, the convex portion 25C plays a role in making it easy to attach to the cover member 30, and the convex portion 25D plays a role in preventing the cover member 30 from coming off. 21(b) and (c), the height of the convex portion 25 (horizontal bridge) and the convex portion 25D (half-moon dowel) may be the same as the height of the convex portion 25A (vertical bridge) and the convex portion 25C (half-moon dowel), or may be different. For example, the height of the convex portion 25 (horizontal bridge) and the convex portion 25D (half-moon dowel) may be lower than the height of the convex portion 25A (vertical bridge) and the convex portion 25C (half-moon dowel).

[0229] In the above embodiment, the protrusion 25, which is a portion located closer to the side surface 2f of the device body 2 than the mounting portion 33 of the cover member 30, is inserted into the through hole 34 provided in the mounting portion 33 of the cover member 30, but this is not limited thereto. Specifically, as shown in FIG. 22, the mounting portion 33 of the cover member 30H may not be provided with the through hole 34, and the protrusion 25H, which is a portion located closer to the side surface 2f than the mounting portion 33, may be a fixing member for fixing the side plate portion 24 of the frame 20H to the mounting portion 33 of the cover member 30H. In FIG. 22, the protrusion 25H is a screw for fixing the side plate portion 24 to the mounting portion 33. Even when the protrusion 25H is a screw, the tip of the protrusion 25H in the X-axis direction may be located at the same position as the tip of the bent portion 24a in the X-axis direction or closer to the side surface 2f than the tip of the bent portion 24a in the X-axis direction.

[0230] In FIG. 22, the convex portion 25H, which is a screw, is screwed from the mounting portion 33 side of the cover member 30H, but this is not limited thereto, and it may be screwed from the side plate portion 24 side of the frame 20H. In addition, when the convex portion 25H is a screw, the convex portion 25H may be a stepped screw as shown in FIG. 23(a) or a low head screw as shown in FIG. 23(b). By making the convex portion 25H a stepped screw, it is possible to reduce the stress applied to the cover member 30H. In addition, by making the convex portion 25H a low head screw, it is possible to prevent the convex portion 25H from contacting the side portion 2f of the instrument body 2. Although not shown, the convex portion 25H may be a stepped low head screw.

[0231] Also, as shown in FIG. 23(c), the protrusion 25Ha, which is a fixing member for fixing the side plate portion 24 and the mounting portion 33, may be a rivet. For example, the protrusion 25Ha is a push rivet. The protrusion 25Ha, which is a rivet, may be made of either resin or metal. However, if the protrusion 25Ha is made of metal, the side surface portion 2f of the fixture body 2 may be rubbed against the protrusion 25Ha when attaching or detaching the LED lighting device 3, causing damage to the coating film. Therefore, it is preferable that the protrusion 25Ha is made of resin. Note that since the protrusion 25Ha exists only partially in the Y-axis direction, even if the protrusion 25Ha and the side surface portion 2f of the fixture body 2 come into contact with each other, it is only partial. Furthermore, since both the frame 20H and the fixture body 2 are made of metal and have a small thermal expansion difference, even if the protrusion 25Ha is made of resin, the generation of abnormal noise can be suppressed. On the other hand, in the LED lighting device 3X shown in FIG. 50, the mounting portion 33X extends along the Y-axis direction, and therefore abnormal noise is likely to occur due to the difference in thermal expansion between the mounting portion 33X and the fixture body 2X.

[0232] In addition, in FIG. 23, the fixing member for fixing the side plate portion 24 of the frame 20H and the mounting portion 33 of the cover member 30H is a screw, and the screw is the protrusion 25H, but the present invention is not limited thereto. Specifically, as shown in FIG. 24, the fixing member for fixing the side plate portion 24 of the frame 20I and the mounting portion 33 of the cover member 30 may be a crimped portion provided on the side plate portion 24, and the crimped portion may be the protrusion 25I. The protrusion 25I is a crimped portion that presses the mounting portion 33 from the outside of the mounting portion 33. Specifically, the protrusion 25I is a crimped portion that presses the mounting portion 33 by passing a claw piece (cut-and-raised piece) formed by cutting and raising a part of the side plate portion 24 through the through hole 34 of the mounting portion 33 and then bending and crimping the claw piece. The claw piece that is crimped to become the protrusion 25I may be cut and raised in the Z-axis direction, or may be cut and raised in the Y-axis direction.

[0233] In the above embodiment, a gap exists between the opening edge 2a1 of the main body 2 and the outer extension 32a of the cover member 30, but this is not limited thereto. Specifically, as shown in Fig. 25, the opening edge 2a1 of the main body 2 and the outer extension 32a of the cover member 30J may be in contact with each other.

[0234] In the above embodiment, the tip of the attachment portion 33 of the cover member 30 is located closer to the floor than the tip of the side plate portion 24 of the frame 20, but this is not limited to the embodiment. Specifically, the tip of the attachment portion 33J of the cover member 30J may be located closer to the ceiling than the tip of the side plate portion 24 of the frame 20, as shown in FIG.

[0235] In this case, as shown in FIG. 25, a bent portion 33a may be provided at the tip of the mounting portion 33J. The bent portion 33a is an engagement portion that engages with the tip of the side plate portion 24 of the frame 20. In FIG. 25, the bent portion 33a engages with the bent portion 24a provided at the tip of the side plate portion 24 of the frame 20. The bent portion 33a is, for example, bent into a V-shape at the tip of the mounting portion 33J. In this way, the cover member 30J and the frame 20 can be engaged and fixed by engaging the bent portion 33a provided at the mounting portion 33J with the bent portion 24a of the side plate portion 24. In this case, the cover member 30J can be attached to the frame 20 by snapping in such that the mounting portion 33J of the cover member 30J embraces the side plate portion 24 of the frame 20 from the width direction of the cover member 30J. Note that the bent portion 33a has a V-shaped cross section, but is not limited thereto. For example, the cross-sectional shape of the bent portion 33a may be L-shaped or may be arc-shaped.

[0236] 25, neither the bent portion 24a of the side plate portion 24 of the frame 20 nor the bent portion 33a of the mounting portion 33J of the cover member 30J abuts against the receiving metal fitting 7, and a gap exists between the bent portion 33a of the mounting portion 33J and the receiving metal fitting 7. This makes it possible to suppress abnormal noise caused by contact between the mounting portion 33J and the receiving metal fitting 7.

[0237] In the above embodiment, the protrusion 25, which is a portion located closer to the side surface 2f than the attachment portion 33, is provided on the frame 20, but this is not limiting.

[0238] Specifically, as shown in Fig. 26, a protrusion 4d, which is a portion located closer to the side surface portion 2f than the mounting portion 33, may be provided on the circuit case 4c of the power supply device 4. The protrusion 4d is a claw piece formed by cutting out a part of a metal plate constituting the circuit case 4c, and is inserted into a through hole 34 of the mounting portion 33 of the cover member 30. The protrusion 4d of the circuit case 4c functions as a mounting structure for mounting the power supply device 4 to the frame 20. Also, in Fig. 26, the tip of the protrusion 4d, which is a claw piece, is bent and crimped to press down the mounting portion 33, but this is not limited thereto.

[0239] Alternatively, as shown in Fig. 27, the protrusion 81, which is a portion located closer to the side surface portion 2f than the mounting portion 33, may be provided on the mounting bracket 80 attached to the frame 20K. The protrusion 81 is a claw piece formed by cutting out a part of a metal plate constituting the mounting bracket 80, and is inserted into the through hole 24b of the side plate portion 24K of the frame 20K and the through hole 34 of the mounting portion 33 of the cover member 30. Also, in Fig. 27, the tip of the protrusion 81, which is a claw piece, is bent and crimped to press down the mounting portion 33. In this way, the mounting bracket 80 also functions as an attachment structure for attaching the cover member 30 to the frame 20K.

[0240] In the above embodiment, the bent portion 24a of the side plate portion 24 of the frame 20 is brought into contact with the receiving metal fitting 7 to provide a gap between the opening edge 2a1 of the device body 2 and the outwardly extending portion 32a of the cover member 30, but this is not limited thereto. Specifically, as shown in FIG. 28, a convex portion 2h may be provided on the side surface portion 2f of the device body 2L, and a convex portion 25 provided on the side plate portion 24 of the frame 20 may be brought into contact with the convex portion 2h of the device body 2L to provide a gap between the opening edge 2a1 of the device body 2L and the outwardly extending portion 32a of the cover member 30. In FIG. 28, the convex portion 2h is a half-moon dowel formed by cutting a part of the side surface portion 2f of the device body 2L into a hemispherical shape, but this is not limited thereto. The protrusion 2h may be a hemispherical spherical dowel formed by pushing up a part of the side portion 2f by press processing, or a bridge formed by cutting and raising a part of the side portion 2f into a bridge shape, or a claw piece (raised piece) formed by cutting and raising a part of the side portion 2f into an L shape.

[0241] 28, the convex portion 25 provided on the side plate portion 24 of the frame 20 is abutted against the convex portion 2h of the fixture body 2L. In other words, when the LED lighting device is attached to the recessed portion 2a of the fixture body 2L, the convex portion 2h of the fixture body 2L becomes the abutting portion on the fixture body 2 side, and the convex portion 25 of the frame 20 abuts against the convex portion 2h in the Z-axis direction. This allows the LED lighting device to be positioned in the Z-axis direction.

[0242] Moreover, in the LED lighting device shown in Fig. 28, the convex portion 25 of the frame 20 is abutted against the convex portion 2h of the fixture body 2L, so that the opening edge 2a1 of the fixture body 2L and the outer extension portion 32a of the cover member 30 do not come into contact with each other, and a gap is formed between the opening edge 2a1 of the fixture body 2L and the outer extension portion 32a of the cover member 30. This makes it possible to suppress abnormal noise caused by the opening edge 2a1 of the fixture body 2L coming into contact with the cover member 30. In addition, by providing a gap between the opening edge 2a1 of the fixture body 2L and the outer extension portion 32a of the cover member 30, air convects through this gap, so that heat generated by the LED lighting device can be effectively dissipated, and the LED lighting device can be easily removed by hooking a finger into this gap.

[0243] Furthermore, in the LED lighting device shown in FIG. 28, by abutting the protruding portion 25 of the frame 20 against the protruding portion 2h of the fixture body 2L, the tip (bent portion 24a) of the side plate portion 24 of the frame 20 does not come into contact with the receiving metal fitting 7, and a gap is formed between the side plate portion 24 of the frame 20 and the receiving metal fitting 7. This makes it possible to suppress abnormal noise caused by contact between the side plate portion 24 of the frame 20 and the receiving metal fitting 7. Note that the bent portion 24a of the side plate portion 24 not only does not come into contact with the receiving metal fitting 7, but also does not come into contact with the fixture body 2L or other metal members provided on the fixture body 2L. Specifically, the tip (bent portion 24a) of the side plate portion 25 is an open end.

[0244] In the LED lighting device 3 according to the above embodiment, the frame 20 has the protruding portion 20b, but this is not limited thereto. For example, as in the LED lighting device 3M shown in FIG. 29A, the frame 20M may be composed of only the main plate portion 21 and a pair of side plate portions 24. In this case, the shape of the XZ cross section of the frame 20M is U-shaped. In FIG. 28, the outer extension portion 32a and the inner extension portion 32b of the extension portion 32M of the cover member 30M are linear in the XZ cross section, and the inner extension portion 32b extends along the main plate portion 21 of the frame 20M. In addition, as in the LED lighting device 3M' shown in FIG. 29B, the extension portion 32M' of the cover member 30M' may not have the outer extension portion 32a and may be composed of only the inner extension portion 32b. In this case, a recess 35 is formed on the mounting portion 33 side of the cover end portion 31a.

[0245] 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 limited thereto. For example, the extension portion 32 or the inner extension portion 32b may extend toward the light source unit 10 from the positions of points A1 to A5 of the cover member 30 shown in FIG. 30(a). 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. In addition, the extension portion 32 or the inner extension portion 32b may extend toward the light source unit 10 from the positions of points B1 to B3 of the cover member 30a shown in FIG. 30(b). 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.

[0246] For example, when the cover member 30 having the shape shown in (a) of Fig. 30 is used, the inner extension portion 32b may extend from the main portion 31 instead of the outer extension portion 32a as shown in (a) of Fig. 31, or the inner extension portion 32b may extend from the middle of the outer extension portion 32a as shown in (b) of Fig. 31, or the main portion 31 may be connected to the middle of the extension portion 32 as shown in (c) of Fig. 31, or the outer extension portion 32a may be connected to the middle of the attachment portion 33 as shown in (d) of Fig. 31. Also, when the cover member 30a having the shape shown in (b) of Fig. 30 is used, the extension portion 32 may extend at an angle from the main portion 31 as shown in (a) of Fig. 32, or may extend in an arch shape from the main portion 31 as shown in (b) of Fig. 32.

[0247] 31 and 32, the portion to which the extension portion 32 or the inner extension portion 32b is directly connected is easily affected when the extension portion 32 or the inner extension portion 32b is deformed, while the portion to which the extension portion 32 or the inner extension portion 32b is not directly connected (for example, when it is connected via another portion) is not easily affected when the extension portion 32 or the inner extension portion 32b is deformed. For this reason, in (a), (c), and (d) of FIG. 31 and (a) and (b) of FIG. 32, the degree of influence on the main portion 31 is large when the extension portion 32 or the inner extension portion 32b is deformed. On the other hand, in (b) of FIG. 31, the degree of influence on the main portion 31 is small when the extension portion 32 or the inner extension portion 32b is deformed.

[0248] 31(d) and 32(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. 31(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. Therefore, in the structure of Fig. 31(b), the influence on both the main portion 31 and the mounting portion 33 is small when the extension portion 32 or the inner extension portion 32b is bent.

[0249] In addition, the LED lighting fixture 1 in the above embodiment is a ceiling-mounted lighting fixture in which the fixture body 2 is directly installed on the ceiling surface as shown in (a) of Fig. 33, but 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 (b) of Fig. 33, the fixture body 2A is embedded in an opening provided in the ceiling 100. With regard to the LED lighting device 3 fitted into the recess 2a of the fixture body 2A, the entire LED lighting device 3 may be recessed inside the recess 2a of the fixture body 2A so that a part of the LED lighting device 3 does not protrude from the ceiling surface of the ceiling 100, or a part of the LED lighting device 3 may protrude from the ceiling surface of the ceiling 100.

[0250] (Other variations) Although the LED lighting fixture and LED lighting device according to the present invention have been described above based on the embodiment and modifications thereof, the present invention is not limited to these embodiment and modifications.

[0251] 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 use the same reference numerals as in the above embodiment, although they have different shapes. The features of the frames described below may be mutually applicable, or may be applicable to the above embodiment and modified examples.

[0252] 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, as in the frame 201 shown in Fig. 34, the horizontal plate portion 23 may be composed only of the parallel plate portion, or as in the frame 202 shown in Fig. 35, the horizontal plate portion 23 may be composed only of the inclined plate portion. In this case, as in the frame 202 shown in Fig. 35, the horizontal plate portion 23 may be composed only of the inclined plate portion inclined toward the outside, or as in the frame 203 shown in Fig. 36, the horizontal plate portion 23 may be composed only of the inclined plate portion inclined toward the inside.

[0253] In the above embodiment, the standing plate portion 22 of the frame 20 is provided perpendicular to the main plate portion 21, but this is not limited thereto. For example, as in the frame 204 shown in FIG. 37, the standing plate portion 22 may be an inclined plate portion provided so as to be inclined with respect to the main plate portion 21. In this case, in the frame 204 shown in FIG. 37, the horizontal plate portion 23 is composed only of an inclined plate portion inclined toward the outside. Also, in FIG. 37, the position of the connection portion 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 portion of the recessed portion 20a), but this is not limited thereto. Specifically, as in the frame 205 shown in FIG. 38, the position of the connection portion 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 portion of the recessed portion 20a). Also, although not shown, the position of the connection portion 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 portion of the recessed portion 20a).

[0254] Also, like frame 206 shown in Fig. 39, horizontal plate portion 23 may be composed of curved plate portions. Also, like frame 207 shown in Fig. 40, standing plate portion 22 may be composed only of inclined plate portions and horizontal plate portion 23 may be composed only of parallel plate portions, or like frame 208 shown in Fig. 41, standing plate portion 22 may be composed only of inclined plate portions and horizontal plate portion 23 may be composed of parallel plate portions and inclined plate portions.

[0255] Also, as in the frame 209 shown in Fig. 42, 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. 42, the horizontal plate portion 23 having the step is composed of two parallel plate portions having different height positions from the main plate portion 21, but this is not limited to this. For example, as in the frame 210 shown in Fig. 43, the horizontal plate portion 23 having the step may have a parallel plate portion and an inclined plate portion located inside the parallel plate portion, as in the frame 211 shown in Fig. 44, the horizontal plate portion 23 having the step may have a parallel plate portion and an inclined plate portion located outside the parallel plate portion and inclined inward, as in the frame 212 shown in Fig. 45, the horizontal plate portion 23 having the step may have an inclined plate portion inclined outward and an inclined plate portion inclined inward. In addition, as in frame 213 shown in Figure 46, 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 47, 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.

[0256] 48, 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 portion 24 is short. The reinforcing rib 21b can be formed by, for example, pressing.

[0257] Also, as in a frame 216 shown in FIG. 49, steps may be formed on both sides of the main plate portion 21 so that the side plate portion 23 drops toward the ceiling.

[0258] In the above embodiment, the protrusions 25, which are located closer to the side surface 2f of the instrument body 2 than the mounting portion 33 of the cover member 30, are formed on the side plate portion 24 discontinuously along the Y-axis direction, but this is not limiting. The protrusions 25 may be ridges formed on the side plate portion 24 over the entire length in the Y-axis direction.

[0259] 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 the above. 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.

[0260] In the above embodiment, the outer extension portion 32a of the cover member 30 may be a part of the main portion 31. In this case, the extension portion 32 of the cover member 30 is, for example, only the inner extension portion 32b, which extends from the outer extension portion 32a, which is a part of the main portion 31, toward the inside of the cover member 30.

[0261] 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 the above. That is, the LED lighting device 3 may be attached to the fixture body 2 without rotating the LED lighting device 3. Specifically, the LED lighting device 3 may be attached to the fixture body 2 by hooking a leaf spring or the like provided on the LED lighting device 3 to the fixture body 2 installed on the ceiling and moving the LED lighting device 3 in a vertical direction so as to move it in parallel toward the fixture body 2. In this case, the LED lighting device 3 can be attached to the fixture body 2 by pushing and fitting the LED lighting device 3 into the recess 2a of the fixture body 2 in the vertical direction.

[0262] In the above embodiment, the LED 12 is an SMD type LED element in which an LED chip is mounted in a package, and the light emitting module consisting of the substrate 11 and the LED 12 is an SMD type LED module, but this is not limited thereto. For example, the light emitting module consisting of the substrate 11 and the LED 12 may be a COB (Chip On Board) type LED module. In this case, the LED 12 may be an LED chip (bare chip) itself, a plurality of LEDs 12 (LED chips) may be linearly arranged on the substrate 11, and the plurality of LEDs 12 may be collectively or individually sealed with a sealing member (for example, a phosphor-containing resin).

[0263] In the above embodiment, the cover member 30 having both diffusive and translucent properties is used, but the present invention is not limited to this. For example, a translucent cover having only translucent properties among the diffusive and translucent properties may be used instead of the cover member 30. In this case, a transparent cover having a high transmittance so that the other side can be seen through may be used as the translucent cover.

[0264] In addition, the present disclosure also includes forms obtained by applying various modifications to the above-mentioned embodiments that a person skilled in the art may conceive, and forms realized by arbitrarily combining the components and functions in the embodiments within the scope of the present invention. In addition, the present invention also includes any combination of two or more claims from among the multiple claims described in the claims at the time of filing of this application, within the scope of technical compatibility. For example, when a cited-form claim described in the claims at the time of filing of this application is made into a multiple claim or multiple multiple claim so as to cite all of the higher claims within the scope of technical compatibility, the present invention also includes all combinations of claims included in the multiple claim or multiple multiple claim. [Explanation of symbols]

[0265] 1 LED lighting fixture 2, 2A, 2L appliance body 2a Recess 3, 3M, 3M' LED lighting device 6 Elastic retaining member 10 Light source section 20, 20A, 20B, 20C, 20D, 20E, 20F, 20H, 20I, 20K, 20M, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, 213, 214, 215, 216 Frame 21 Main plate part 24, 24K side plate part 25, 25A, 25B, 25C, 25D, 25E, 25F, 25G, 25H, 25Ha, 25I Convex 30, 30a, 30H, 30J, 30M, 30M' Cover member 31 Main Section 33, 33J mounting part 34 Through hole

Claims

1. An LED lighting device that is attached to a recess in a fixture body installed in a building material, A light source unit; a long frame having a main plate portion to which the light source unit is attached; a long cover member attached to the frame, the frame has a side plate portion extending toward an opposite side to a light emission side of the light source portion, the cover member has a main portion that covers the light source unit and an attachment portion that extends toward an opposite side to a light emission side of the light source unit and is attached to the side plate portion, When the LED lighting device is attached to the fixture body, the attachment portion is located between the side plate portion and a side surface portion of the fixture body, The LED lighting device has a portion located closer to the side surface of the fixture body than the mounting portion, LED lighting equipment.

2. An elastic member is provided for attaching the LED lighting device to the fixture body.

2. The LED lighting device according to claim 1.

3. The portion is in contact with a side portion of the tool body.

2. The LED lighting device according to claim 1.

4. A gap exists between the portion and the side surface of the instrument body.

2. The LED lighting device according to claim 1.

5. The portion is provided on the side plate portion. The LED lighting device according to any one of claims 1 to 4.

6. The portion is a protrusion protruding from the side plate portion.

6. The LED lighting device according to claim 5.

7. The protruding height of the protrusion is greater than the thickness of the mounting portion.

7. The LED lighting device according to claim 6.

8. The mounting portion is provided with a through hole, The protrusion penetrates the through hole.

7. The LED lighting device according to claim 6.

9. The protrusion is formed by processing a part of the frame.

7. The LED lighting device according to claim 6.

10. An LED lighting device according to any one of claims 1 to 4; and a fixture body having a recess in which the LED lighting device is attached. LED lighting fixture.

Images