Lighting device and control unit

Abstract

To provide a lighting device or the like capable of suppressing occurrence of wire biting of an electric wire when fixing a control unit to which the electric wire is connected without separately providing a wiring processing component.SOLUTION: The LED lighting device 3 includes the light source portion 10 and the control unit 50, the control unit 50 includes the box-shaped case 51 having one end opened and the control board 52 housed in the case 51, one end portion of the electric wire 80 is connected to the control board 52, and the case 51 is provided with the electric wire processing portion 53 formed by cutting out a part of the case 51. The wire processing part 53 has a wire passing part 53a into which the wire 80 is inserted, and a wire holding part 80 for holding the wire 80 passed through the wire passing part 53a.SELECTED DRAWING: Figure 16

Description

[Technical Field]

[0001] The present invention relates to a lighting device and a control unit for use in a lighting device. [Background technology]

[0002] 2. Description of the Related Art A lighting device has been proposed that includes a control unit for controlling a light source unit. The control unit includes a control board and a case for accommodating the control board.

[0003] Conventionally, lighting devices have been proposed that include such control units as expansion units that expand the functionality of the lighting devices (see, for example, Patent Document 1). As this type of expansion unit, for example, an infrared receiving module that receives infrared rays and controls a light source unit is known. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2020-021704 Summary of the Invention [Problem to be solved by the invention]

[0005] The control unit is connected to another unit, such as a power supply unit, via an electric wire. In this case, the electric wire is made long enough to facilitate the process of connecting the electric wire. Therefore, when the case of the control unit to which the electric wire is connected is fixed to another unit, such as a power supply unit, or a support member, there is a risk that the power supply connected to the control unit may be pinched between the case of the control unit and the other unit or support member. In other words, there is a risk of the electric wire getting caught.

[0006] It is also possible to provide a separate wiring processing component to hook the electric wires to prevent them from getting caught, but providing a separate wiring processing component not only increases the number of parts and costs, but also may reduce assembly work efficiency.

[0007] The present invention has been made to solve such problems, and aims to provide a lighting device, control unit, etc. that can prevent wire jamming when fixing a control unit to which electric wires are connected, without the need to provide a separate wiring processing component. [Means for solving the problem]

[0008] In order to achieve the above object, one aspect of the lighting device according to the present invention comprises a light source section and a control unit, the control unit having a box-shaped case with one open end and a control board housed in the case, one end of an electric wire connected to the control board, the case having an electric wire processing section formed by cutting out a part of the case, the electric wire processing section having an electric wire passing section into which the electric wire is inserted, and an electric wire holding section which holds the electric wire that has passed through the electric wire passing section.

[0009] Furthermore, one aspect of the control unit according to the present invention is a control unit that controls a light source unit provided in a lighting device, the control unit having a box-shaped case with one open end and a control board housed in the case, one end of an electric wire connected to the control board, the case having an electric wire processing section formed by cutting out a part of the case, the electric wire processing section having an electric wire passing section into which the electric wire is inserted, and an electric wire holding section that holds the electric wire that has passed through the electric wire passing section. [Effects of the Invention]

[0010] According to the present invention, it is possible to prevent the electric wires from getting caught when fixing a control unit to which the electric wires are connected, without providing a separate wiring processing component. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view of an LED lighting fixture according to an embodiment. [Figure 2]FIG. 2 is an exploded perspective view of the LED lighting fixture according to the embodiment. [Figure 3] FIG. 3 is a cross-sectional view of the LED lighting fixture according to the embodiment. [Figure 4] FIG. 4 is a cross-sectional view of an LED lighting fixture according to an embodiment. [Figure 5] FIG. 5 is a partial cross-sectional view of an LED lighting fixture according to an embodiment. [Figure 6] FIG. 6 is a perspective view of the LED lighting device according to the embodiment as viewed from the cover member side. [Figure 7] FIG. 7 is a perspective view of the LED lighting device according to the embodiment as seen from the back side. [Figure 8] FIG. 8 is a cross-sectional perspective view of the LED lighting device according to the embodiment. [Figure 9] FIG. 9 is an exploded perspective view of the LED lighting device according to the embodiment. [Figure 10] FIG. 10 is a diagram for explaining a method for attaching an LED lighting device to a fixture body in an LED lighting fixture according to an embodiment. [Figure 11] FIG. 11 is a cross-sectional view of the LED lighting device taken along a plane passing through the control unit. [Figure 12] FIG. 12 is a cross-sectional view of the LED lighting device taken along the longitudinal direction. [Figure 13] FIG. 13 is a cross-sectional perspective view of the LED lighting device. [Figure 14] FIG. 14 is a perspective view of the power supply unit and the control unit in the LED lighting device as seen from one side. [Figure 15] FIG. 15 is a perspective view of the power supply unit and the control unit in the LED lighting device as seen from the other side. [Figure 16] FIG. 16 is a plan view of the power supply unit and the control unit in the LED lighting device. [Figure 17] FIG. 17 is a perspective view of a control unit in an LED lighting device. [Figure 18]FIG. 18 is a perspective view of a control unit in an LED lighting device. [Figure 19] FIG. 19 is a perspective view of a control unit in an LED lighting device. [Figure 20] FIG. 20 is a diagram showing the control unit as viewed from the open side of the case. [Figure 21] FIG. 21 is a plan view of the control unit in the LED lighting device. [Figure 22] FIG. 22 is a diagram showing how the electric wire connected to the control unit is connected to the power supply unit. [Figure 23] FIG. 23 is a diagram showing how the control unit and the power supply unit connected by an electric wire are connected together. [Figure 24] FIG. 24 is a perspective view of a control unit according to the first modification. [Figure 25] FIG. 25 is a perspective view of a control unit according to the first modification. [Figure 26] FIG. 26 is a view of the control unit according to the first modification when viewed from the opening side of the case. [Figure 27] FIG. 27 is a plan view of a control unit according to the first modification. [Figure 28] FIG. 28 is a perspective view of a control unit according to the second modification. [Figure 29] FIG. 29 is a perspective view of a control unit according to the second modification. [Figure 30] FIG. 30 is an enlarged plan view of a control unit according to the third modification. [Figure 31] FIG. 31 is a cross-sectional view showing a modified example of the instrument body. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that each of the embodiments described below shows a specific example of the present invention. Therefore, the numerical values, components, the arrangement and connection of the components, steps, and the order of steps shown in the following embodiments are merely examples and are not intended to limit the present invention. Therefore, among the components in the following embodiments, components that are not described in the independent claims that represent the highest concept of the present invention will be described as optional components.

[0013] Note that each figure is a schematic diagram and is not necessarily an exact illustration. Furthermore, in each figure, substantially identical components are assigned the same reference numerals, and redundant explanations are omitted or simplified. Furthermore, in each figure, the X-axis, Y-axis, and Z-axis represent the three axes of a three-dimensional Cartesian coordinate system. In this embodiment, the Z-axis direction is the vertical direction, and the direction perpendicular to the Z-axis (the direction parallel to the XY plane) is the horizontal direction. The X-axis and Y-axis are mutually orthogonal and are both orthogonal to the Z-axis. Note that, in this specification, the terms "up" and "down" do not necessarily refer to the upward direction (vertically upward) and downward direction (vertically downward) in absolute spatial recognition. Furthermore, in this specification, the terms "substantially," "almost," and "about" mean to include manufacturing errors or dimensional tolerances. As an example, "substantially," "almost," and "about" mean within ±5%.

[0014] (Embodiment) First, the configuration of an LED lighting fixture 1 according to an embodiment will be described with reference to FIGS. 1 to 5. FIG. 1 is a perspective view of the LED lighting fixture 1 according to an embodiment. FIG. 2 is an exploded perspective view of the LED lighting fixture 1. FIGS. 3 and 4 are cross-sectional views of the LED lighting fixture 1, showing a cross section taken along a plane parallel to the short side of the LED lighting fixture 1. FIG. 3 shows a cross section of a portion where no power supply unit 4 is present, and FIG. 4 shows a cross section of a portion where the power supply unit 4 is present. FIG. 5 is a partial cross-sectional view of the LED lighting fixture 1, showing a cross section taken along a plane parallel to the longitudinal direction of the LED lighting fixture 1. Specifically, FIG. 5 shows a cross section of the vicinity of one of both longitudinal ends of the LED lighting fixture 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] As shown in Figure 3, the LED lighting fixture 1, which consists of a fixture body 2 and an LED lighting device 3, has an overall D-shaped cross section when viewed from the longitudinal direction of the LED lighting fixture 1, resulting in a clean design in which the boundary between the fixture body 2 and the LED lighting device 3 is inconspicuous.

[0018] The fixture body 2 holds the LED lighting device 3. The fixture body 2 is installed in a predetermined location in a building. Specifically, the LED lighting fixture 1 is installed in a predetermined construction material such as a ceiling or wall in a room of a building such as a facility, building, store, or residence. In this embodiment, the LED lighting fixture 1 is a ceiling light installed on the ceiling of a building. As an example, the LED lighting fixture 1 is a direct-ceiling mounted LED light, and the fixture body 2 is installed on the ceiling surface of the ceiling. In this case, the LED lighting fixture 1 installed on the ceiling irradiates illumination light toward the floor (floor side), with the floor direction (floor side) being the predetermined direction. The illumination light is irradiated from the LED lighting device 3 in the LED lighting fixture 1.

[0019] When installing an LED lighting fixture 1 on a ceiling, the fixture body 2 of the LED lighting fixture 1 is attached to the ceiling using bolts or the like. For example, as shown in FIG. 2, a bolt 101 protruding from the ceiling is inserted into a bolt insertion hole 2d provided in the fixture body 2, and a washer and nut are attached to the bolt 101 to secure the fixture body 2 to the bolt 101. Note that, depending on the construction site, the fixture body 2 may be attached using a double nut. The fixture body 2 requires a protruding allowance for the bolt (an allowance for the bolt to be retracted into the fixture body 2), and it is desirable that the surrounding area be designed so that the components that make up the LED lighting device 3 do not interfere with it.

[0020] Furthermore, components (such as the power supply unit 4, the dimming terminal block, and the functional unit) provided on the rear side of the frame 20 of the LED lighting device 3 protrude from the frame 20. Therefore, they should be positioned so as not to interfere with the bolt insertion holes 2d, the wiring insertion holes 2e (holes through which wiring 102, such as the power line and the dimming signal line drawn from the ceiling, is inserted), and the terminal block provided in the fixture body 2, and not to overlap with the bolt insertion holes 2d, the wiring insertion holes 2e, and the terminal block. In particular, in a fixture body 2 having a shallow recess 2a, components provided on the rear side of the frame 20 should be positioned so as not to overlap with the bolt insertion holes, the wiring insertion holes, and the terminal block. Note that even in a fixture body (such as a renewal fixture body) with a deep recess used in an existing lighting fixture equipped with a fluorescent lamp, components provided on the rear side of the frame 20 should be positioned so as not to overlap with the bolt insertion holes, the wiring insertion holes, and the terminal block. In addition, since there is a possibility that two power lines (VVF cables) (for input and for feed) may be placed between the wiring insertion hole 2e (particularly the hole through which the power line is inserted) and the terminal block, it is desirable to arrange the components (wiring such as power lines) provided on the back side of the frame 20 so that they do not overlap the area between the wiring insertion hole and the terminal block.

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

[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. In other words, the shape of the recess 2a in a top view (the shape of the opening surface) is rectangular with the Y-axis direction as the longitudinal direction.

[0023] As shown in Figures 2 and 3, the appliance body 2 has an opening edge 2a1 located outside the recess 2a. The opening edge 2a1 (first opening edge) is located outside the short-side direction (X-axis direction) of the appliance body 2 and is the appliance body side that serves as a side portion of the appliance body 2. The opening edge 2a1 (appliance body side) forms the edge of the opening surface of the recess 2a in the short-side direction (X-axis direction) of the appliance body 2. In other words, the outer edge of the opening edge 2a1 on the recess 2a side is the edge of the opening surface of the recess 2a. In this embodiment, the opening edge 2a1 is a flat portion whose surface is flat and forms the opening edge surface of the recess 2a.

[0024] The opening edge 2a1 is a flat part of the metal plate that constitutes the device body 2. As an example, the opening edge 2a1 has a long, narrow rectangular shape in a top view, with its longitudinal direction aligned in the Y-axis direction. In this case, the long side of the opening edge 2a1 is the long side of the rectangular opening surface of the recess 2a, with its longitudinal direction aligned in the Y-axis direction.

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

[0027] Like the opening edge 2a1, the opening edge 2a2 is a part of the metal plate that constitutes the device body 2 and has a flat plate shape. As an example, the opening edge 2a2 has a rectangular shape in a top view with its longitudinal direction in the X-axis direction. In this case, the long side of the opening edge 2a2 is the short side of the rectangular opening surface of the recess 2a with its longitudinal direction in the Y-axis direction.

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

[0030] The pair of opening edges 2a1 and the pair of opening edges 2a2 form a flat portion formed in a rectangular frame shape when viewed from above. The area surrounded by the pair of opening edges 2a1 and the pair of opening edges 2a2 forms the rectangular opening surface of the recess 2a.

[0031] The fixture body 2 also has inclined surface portions 2b on both sides of the recess 2a in the X-axis direction (width direction) of the fixture body 2. Each inclined surface portion 2b extends from the opening edge 2a1 (the fixture body side) and has an inclined surface that slopes toward the ceiling as it extends outward. This inclined surface may function as a reflective surface.

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

[0033] The LED lighting device 3 is fitted into the recess 2a of the fixture body 2. Specifically, the LED lighting device 3 is attached to the fixture body 2 so as to cover the recess 2a of the fixture body 2. In this embodiment, the LED lighting device 3 is detachably attached to the recess 2a of the fixture body 2. Therefore, the LED lighting device 3 can be attached to the recess 2a of the fixture body 2, and the LED lighting device 3 attached to the recess 2a of the fixture body 2 can be detached from the recess 2a.

[0034] Although details will be described later, the LED lighting device 3 and the fixture body 2 can be fixed by hooking and engaging a hook fitting 5 and an elastic holding member 6 (a kick spring in this embodiment) provided on the LED lighting device 3 onto the fixture body 2. The hook fitting 5 is a fitting for attaching the LED lighting device 3 to the fixture body 2. In this embodiment, the hook fitting 5 is a slide fitting, but is not limited to this.

[0035] The means for attaching the LED lighting device 3 to the fixture body 2 is not limited to the use of the hook metal fitting 5 and the elastic holding member 6 made of a kick spring. For example, the LED lighting device 3 and the fixture body 2 may be attached using other spring members such as a single torsion spring, a double torsion spring, or a leaf spring, or may be attached using attachment members other than spring members such as screws or latches. Furthermore, the spring member such as a kick spring and the spring receiving metal fitting for receiving the spring member may be provided on either the fixture body 2 or the LED lighting device 3. In other words, the spring member may be provided on the fixture body 2 and the spring receiving metal fitting may be provided on the LED lighting device 3, or the spring member may be provided on the LED lighting device 3 and the spring receiving metal fitting may be provided on the fixture body 2.

[0036] 4, the LED lighting device 3 emits light using power supplied from a power supply unit 4 housed in the fixture body 2. The power supply unit 4 is a power supply device for supplying power to the light source section 10 of the LED lighting device 3.

[0037] The power supply unit 4 is disposed on the rear side of the LED lighting device 3. Specifically, the power supply unit 4 is disposed in the recess 2a of the fixture body 2. That is, the power supply unit 4 is housed in the recess 2a of the fixture body 2. In this embodiment, the power supply unit 4 is attached to the LED lighting device 3 as a part of the LED lighting device 3 and is integrated with the LED lighting device 3. Note that the power supply unit 4 may not be integrated with the LED lighting device 3, but may be disposed in the fixture body 2 separately from the LED lighting device 3. For example, the power supply unit 4 may be fixed to the fixture body 2.

[0038] The power supply unit 4 is configured with a power supply circuit that generates power for illuminating the LED lighting device 3. Specifically, the power supply unit 4 has a circuit board 4a such as a printed wiring board, and multiple electronic components 4b mounted on the circuit board 4a. A predetermined pattern of wiring is formed on the circuit board 4a. The circuit board 4a is a power supply board, and the multiple electronic components 4b mounted on the circuit board 4a are circuit components that make up the power supply circuit. The power supply circuit that makes up the power supply unit 4 converts AC power from an external power source such as a commercial power source into DC power of a predetermined level by rectifying, smoothing, and stepping down the power, and supplies the DC power to the LEDs of the LED lighting device 3.

[0039] In this embodiment, the power supply unit 4 further includes a circuit case 4c that houses a circuit board 4a on which a 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. However, the circuit case 4c may also be a resin housing.

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

[0041] Furthermore, when connecting the power supply terminal block 8 and the power supply unit 4 via a power line, a connector provided at the other end of the power supply 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 supply line connected to the power supply terminal block 8 may be connected to a connector provided at the other end of the power supply line connected to the power supply unit 4, or a connector provided at the other end of the power supply 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 by a power line and the VVF cable from the ceiling may be connected to the power supply terminal block 8, or an outlet wire drawn from the power supply unit 4 may be directly connected to the VVF cable from the ceiling.

[0042] Next, the detailed structure of the LED lighting device 3 will be described using Figs. 6 to 9 while referring to Figs. 1 to 5. Fig. 6 is a perspective view of the LED lighting device 3 according to the embodiment as seen from the cover member 30 side, and Fig. 7 is a perspective view of the LED lighting device 3 as seen 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.

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

[0044] 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. As shown in FIGS. 6 to 9, the LED lighting device 3 further includes a control unit 50.

[0045] In this embodiment, the LED lighting device 3 also includes a power supply unit 4. That is, the power supply unit 4 is provided in the LED lighting device 3. Specifically, the power supply unit 4 is disposed on the second surface 21b side of the main board portion 21 of the frame 20 and attached to the frame 20. As shown in FIG. 4 , the power supply unit 4 is fixed to the frame 20 by fastening a part of the circuit case 4c to the main board portion 21 of the frame 20 with screws 60.

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

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

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

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

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

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

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

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

[0054] The substrate 11 is disposed on the frame 20. The substrate 11 has a first surface on which the LEDs 12 are mounted, and a second surface facing away from the first surface. The first surface of the substrate 11 is the surface 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.

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

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

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

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

[0059] The frame 20 is a mounting member (base member) to which the light source unit 10 is attached. Specifically, the substrate 11 of the light source unit 10 is attached to the frame 20. The light source unit 10 is supported by the frame 20. In other words, the frame 20 is a support member that supports the light source unit 10 and functions as a main body of the LED lighting device 3. In this embodiment, the frame 20 not only supports the light source unit 10 but also supports the cover member 30. Specifically, the substrate 11 on which the LEDs 12 are arranged is placed on the frame 20 and fixed to the frame 20, so that the substrate 11 on which the LEDs 12 are arranged is supported by the frame 20. As shown in FIG. 9 , the frame 20 is elongated. In this embodiment, the frame 20 is elongated in the Y-axis direction, similar to the light source unit 10 and the fixture main body 2.

[0060] The frame 20 is made of a plate-like member. In this embodiment, the frame 20 is made of metal and is made 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 of metal (metal plate) made of SPCC (Steel Plate Cold Commercial; cold-rolled steel plate). The thickness of the metal plate constituting the frame 20 is, for example, 0.2 mm to 2 mm. In this embodiment, the frame 20 is formed by sheet metal working, so the thickness of the metal plate constituting the frame 20 is preferably 1 mm or less. Specifically, the thickness of the metal plate constituting the frame 20 is set to 0.5 mm. Note that the method for producing the frame 20 is not limited to roll forming and press working, and may also be aluminum extrusion molding, etc.

[0061] 3 and 4, the frame 20 has a main plate portion 21, a pair of upright plate portions 22, a pair of horizontal plate portions 23, and a pair of side plate portions 24. As shown in Fig. 9, the main plate portion 21, the pair of upright plate portions 22, the pair of horizontal plate portions 23, and the pair of side plate portions 24 all extend along the longitudinal direction (Y-axis direction) of the frame 20. Also, as shown in Figs. 3 and 4, in this embodiment, the frame 20 is formed symmetrically in the XZ cross section with respect to the center of the frame 20 in the short side direction, but this is not limited to this.

[0062] The main board 21 is the main body of the frame 20. The main board 21 is a plate-like body that is generally flat and has a constant thickness. As shown in FIG. 3 , the light source 10 is disposed on the main board 21. Specifically, a board 11 on which LEDs 12 are disposed is placed on the main board 21. In other words, the main board 21 supports the board 11. In this embodiment, the board 11 and the main board 21 are in contact with each other. The LEDs 12 of the light source 10 are disposed in the center of the main board 21 in the width direction, but this is not limited to this.

[0063] The main board 21 has a first surface 21a which is the surface facing the light source 10, and a second surface 21b facing away from the first surface 21a. In this embodiment, the first surface 21a is the surface on which the light source 10 is disposed. Specifically, the first surface 21a is a board mounting surface on which the board 11 of the light source 10 is mounted. When the LED lighting device 1 is installed on a ceiling, the frame 20 is disposed so that the first surface 21a and the second surface 21b of the main board 21 are substantially parallel to the ceiling surface. In this case, the first surface 21a of the main board 21 is the surface facing the floor, and the second surface 21b of the main board 21 is the surface facing the ceiling.

[0064] 3, the main plate 21 is located closer to the ceiling than the opening of the recess 2a of the fixture body 2 (i.e., closer to the bottom of the recess 2a). In this embodiment, the LEDs 12 are also located closer to the bottom of the recess 2a than the opening of the recess 2a of the fixture body 2. Specifically, the main plate 21 and the LEDs 12 are located closer to the ceiling than the opening edge 2a1 of the recess 2a. This increases the distance between the cover member 30 and the LEDs 12, thereby reducing uneven brightness (graininess) of the linearly arranged LEDs 12.

[0065] As shown in FIGS. 8 and 9, the main plate portion 21 is formed with claw pieces 21c which are formed by cutting and raising a part of the frame 20 made of a metal plate.

[0066] The substrate 11 placed on the main plate 21 is fixed to the main plate 21 by engaging with the claws 21c. In this case, for example, the substrate 11 may be fixed to the main plate 21 by sliding the substrate 11 to engage with the claws 21c and then engaging the longitudinal end of the substrate 11 with another claw, or the substrate 11 may be fixed to the main plate 21 by crimping the claws 21c. Note that the method of fixing the main plate 21 and the substrate 11 is not limited to the locking structure using the claws 21c, and the main plate 21 and the substrate 11 may be adhesively fixed using an adhesive, adhesive tape, or the like. Also, although the main plate 21 and the substrate 11 are in contact with each other, this is not limiting. For example, a separate member such as a thermally conductive sheet may be inserted between the main plate 21 and the substrate 11.

[0067] 9, the main board 21 is provided with through holes 21d through which electrical connection members are inserted to electrically connect the wiring of the substrate 11 of the light source unit 10 and the circuit board 4a of the power supply unit 4. In this embodiment, a conductive pin is attached to the circuit board 4a of the power supply unit 4 as the electrical connection member that electrically connects the substrate 11 and the circuit board 4a, and this conductive pin is inserted through the through holes 21d. The conductive pin inserted through the through holes 21d is directly connected to a connector provided on the substrate 11. Note that the electrical member that electrically connects the substrate 11 and the circuit board 4a may be an electric wire instead of a conductive pin. In this case, the electric wire is inserted through the through holes 21d.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[0116] The outer extension portion 32a of the extension portion 32 has a portion that overlaps the gap between the inner surface of the recess 2a and the mounting portion 33 in the direction toward the floor or the ceiling (i.e., in the Z-axis direction). The outer extension portion 32a also 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 to span the gap between the inner surface of the recess 2a and the mounting portion 33.

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

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

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

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

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

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

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

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

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

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

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

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

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

[0130] The inner extension portion 32b has an inner portion in the short-side direction of the cover member 30 that is more gradual in slope than an outer portion in the short-side direction of the cover member 30. In other words, the portion on the light source unit 10 side is more gradual in slope than the portion on the mounting unit 33 side. Specifically, the slope of the second plate portion 32b2 (inclined plate portion) of the inner extension portion 32b is more gradual than the slope of the inclined plate portion of the first plate portion 32b1 of the inner extension portion 32b. In other words, the inclination angle of the second plate portion 32b2 (inclined plate portion) of the inner extension portion 32b is smaller than the inclination angle of the inclined plate portion of the first plate portion 32b1 of the inner extension portion 32b.

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

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

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

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

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

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

[0137] Additionally, the spatial region S1 may house functional components or internal electric wires that are wired in a factory when manufacturing the LED lighting device 3. The internal electric wires housed in the spatial region S1 are, for example, electric wires connected to the power supply unit 4 or electric wires that connect multiple light source units 10 together. Among these, the electric wires connected to the power supply unit 4 include a power line that connects the power supply unit 4 and the power terminal block 8, and a dimming control line that connects the power supply unit 4 and the dimming terminal block 9.

[0138] The mounting portion 33 of the cover member 30 extends on the side opposite to the light emission side of the light source unit 10. Specifically, the mounting portion 33 is connected to the extension portion 32 and extends from a part of the extension portion 32 toward the ceiling. The mounting portion 33 is attached to a pair of side plate portions 24 of the frame 20.

[0139] Furthermore, even if foreign objects such as insects or dust invade the spatial region S1, the distance between the spatial region S1 and the main portion 31 is long, so that foreign objects present in the spatial region S1 are unlikely to cast shadows. Furthermore, the gap region between the inclined plate portion 23b of the frame 20 and the inner extension portion 32b is close to the main portion 31, so if an insect is present in this gap region, it is likely to cast a shadow. However, the small size of this gap region makes it difficult for insects to accumulate. Even if an insect does invade this gap region, because the insect has propulsion capabilities, it will move from this gap region toward the spatial region S1 and enter the spatial region S1 where shadows are unlikely to be cast. Furthermore, because the entrance (exit) of the spatial region S1 is narrow, once the insect enters the spatial region S1, it will not exit the spatial region S1. In other words, the insect can be trapped in the spatial region S1 where shadows are unlikely to be cast. This does not apply if the extension portion 32 is made of an opaque material such as white resin.

[0140] In this embodiment, a pair of mounting portions 33 are provided to sandwich the frame 20. The pair of mounting portions 33 are formed as a pair of legs (feet) of the cover member 30. The pair of mounting portions 33 have the same length in the Z-axis direction. As shown in FIGS. 8 and 9, each of the pair of mounting portions 33 is formed elongated along the Y-axis direction. The pair of mounting portions 33 also have the same length in the Y-axis direction.

[0141] When the cover member 30 is attached to the frame 20, each of the pair of attachment portions 33 is elastically deformed. The posture of each attachment portion 33 relative to each side plate portion 24 is different before and after the cover member 30 is attached to the frame 20.

[0142] As shown in FIGS. 3 and 8 , each of the pair of mounting portions 33 has abutting portions 33a that abut against the pair of side plate portions 24 of the frame 20. That is, the mounting portions 33 contact the side plate portions 24 of the frame 20 at the abutting portions 33a. In this embodiment, the abutting portions 33a of the mounting portions 33 are tip portions of the mounting portions 33. Therefore, the tip portions of the mounting portions 33 contact the side plate portions 24 of the frame 20. Also, in this embodiment, the abutting portions 33a of the mounting portions 33 are engaging portions that engage with the tip portions of the side plate portions 24 of the frame 20. Therefore, the tip portions of the mounting portions 33 engage with the tip portions of the side plate portions 24 of the frame 20.

[0143] In the present embodiment, the abutting portions 33a serving as engaging portions are, for example, bent portions formed by bending the tip portions of the mounting portions 33 into an L shape. Bent portions 24a provided at the tip portions of the side plate portions 24 of the frame 20 engage with the abutting portions 33a, thereby locking and fixing the pair of mounting portions 33 of the cover member 30 and the pair of side plate portions 24 of the frame 20 to each other. As a result, the pair of mounting portions 33 of the cover member 30 are fixed to the frame 20 in a manner that embraces the frame 20.

[0144] The side plate portion 24 of the frame 20 and the mounting portion 33 of the cover member 30 may also be fixed together with a screw. In this case, the screw is screwed into the portion where the side plate portion 24 and the mounting portion 33 overlap from the outside of the mounting portion 33. Alternatively, the frame 20 and the cover member 30 may be fixed together with a crimping structure. For example, the frame 20 and the cover member 30 may be fixed together by crimping a portion of the side plate portion 24 of the frame 20 to the mounting portion 33 of the cover member 30. The frame 20 and the cover member 30 may also be fixed together with a separate part such as a metal fitting.

[0145] In the present embodiment, as described above, the cover member 30 is attached to the frame 20 by snapping the attachment portions 33 of the cover member 30 into the side plate portions 24 of the frame 20 from the width direction of the cover member 30, but this is not limiting. For example, the cover member 30 may be attached to the frame 20 by inserting the cover member 30 from the end of the frame 20 in the longitudinal direction and sliding the cover member 30.

[0146] In addition, in this embodiment, the abutting portion 33a formed at the tip of the mounting portion 33 has a shape that is bent so as to be inclined, but this is not limited to this. For example, the abutting portion 33a may be bent at a right angle into an L-shape. Furthermore, the abutting portion 33a may be formed so that the tip is folded back. In this case, the abutting portion 33a has a recessed portion with a cross-sectional shape that is approximately U-shaped or C-shaped.

[0147] A gap, which is a space, may exist between the extension portion 32 of the cover member 30 and the frame 20. Specifically, a gap may exist between the extension portion 32 and the protrusion 20b of the frame 20. Therefore, the extension portion 32 and the protrusion 20b are not in contact with each other. Specifically, even when the LED lighting device 3 is housed in the recess 2a of the fixture body 2, the extension portion 32 and the protrusion 20b are not in contact with each other. However, the extension portion 32 and the protrusion 20b may be in contact with each other.

[0148] Furthermore, there is a gap between the mounting portion 33 of the cover member 30 and the side plate portion 24 of the frame 20. Therefore, the mounting portion 33 and the side plate portion 24 are not in contact with each other. However, the mounting portion 33 and the side plate portion 24 may be in contact with each other.

[0149] The cover member 30 is made of a translucent resin material such as acrylic or polycarbonate, or a translucent material such as glass. In this embodiment, the cover member 30 is made of a translucent resin material. In this case, the cover member 30 may be a milky white cover member with a light diffusing material dispersed therein. Such a cover member 30 may be produced by resin molding a translucent resin material mixed with a light diffusing material into a predetermined shape. Light-reflective fine particles such as silica particles may be used as the light diffusing material.

[0150] The cover member 30 may be configured by forming a milky white light-diffusing film containing a light-diffusing material on the surface (inner or outer surface) of the transparent cover, rather than dispersing a light-diffusing material inside. The cover member 30 may also be configured to have light-diffusing properties by applying a diffusing treatment, rather than using a light-diffusing material. For example, the cover member 30 may be configured to have light-diffusing properties by applying a surface treatment such as a texturing treatment to form minute irregularities on the surface of the transparent cover, or by printing a dot pattern on the surface of the transparent cover. Even when the cover member 30 is subjected to a diffusing treatment, it may further contain a light-diffusing material to enhance light-diffusing properties.

[0151] In this embodiment, the main portion 31, the extension portion 32, and the mounting portion 33 that constitute the cover member 30 are integrally formed. Therefore, the main portion 31, the extension portion 32, and the mounting portion 33 are made of the same material. Note that the main portion 31, the extension portion 32, and the mounting portion 33 all have the same material strength, but this is not limited to this. For example, the material strengths of the main portion 31, the extension portion 32, and the mounting portion 33 may be different. In this case, it is preferable that the material strength of the main portion 31 is greater than the material strength of the extension portion 32 and the material strength of the mounting portion 33. This configuration can prevent deformation of the main portion 31. In other words, the shape of the main portion 31 is stabilized. This can reduce the impact of deformation of the cover member 30 on optical performance.

[0152] Furthermore, the thicknesses of the main portion 31, the extension portion 32, and the mounting portion 33 are not particularly limited, but are, for example, 0.5 mm or more and 5 mm or less. As an example, the thickness of the main portion 31 may be 1 mm or less. Note that the main portion 31, the extension portion 32, and the mounting portion 33 all have the same thickness, but this is not limited to this. For example, the thicknesses of the main portion 31, the extension portion 32, and the mounting portion 33 may be different. In this case, it is preferable that the thickness of the main portion 31 is greater than the thicknesses of the extension portion 32 and the mounting portion 33. This configuration can suppress deformation of the main portion 31. In other words, the shape of the main portion 31 is stabilized. This can reduce the impact of deformation of the cover member 30 on optical performance.

[0153] In the present embodiment, the main portion 31, the extension portion 32, and the mounting portion 33 are made of the same resin material. However, this is not limiting. The main portion 31, the extension portion 32, and the mounting portion 33 may be made of two or more types of materials. In this case, the main portion 31 and the extension portion 32 may be made of different resin materials. For example, the main portion 31 may be made of a translucent resin material, and part or all of the extension portion 32 may be made of a white or milky white resin material. The mounting portion 33 may be made of the same resin material as the main portion 31 or the extension portion 32. Specifically, the main portion 31, the mounting portion 33, the outer extension portion 32a of the extension portion 32, and the second plate portion 32b2 of the inner extension portion 32b of the extension portion 32 may be made of a translucent resin material, and the first plate portion 32b1 and the third plate portion 32b3 of the inner extension portion 32b of the extension portion 32 may be made of a white or milky white resin material. By coloring part or all of the extension portion 32 white or milky white, the extension portion 32 (e.g., the inner extension portion 32b) can be given a reflective function. This allows light emitted from the LEDs 12 that reaches the extension portion 32 to be reflected by the inner extension portion 32b and enter the main portion 31. As a result, the light extraction efficiency of the LED lighting device 3 can be improved. Therefore, the illuminance directly below the LED lighting fixture 1 can be improved, and when multiple LED lighting fixtures 1 are installed, the number of LED lighting fixtures 1 installed can be reduced. Furthermore, by coloring the mounting portion 33 white or milky white, light leakage into the fixture body 2 can be reduced. The cover member 30 thus partially composed of a white or milky white resin material can be formed by two-color molding. The extension portion 32 may also be molded using two layers and two colors. For example, the base layer of the extension portion 32 may be made of the same translucent resin material as the main portion 31, and the surface layer of the extension portion 32 (a layer laminated on the base layer) may be made of a white or milky white resin material.

[0154] The cover member 30 has both longitudinal ends closed. In the present embodiment, both longitudinal ends of the cover member 30 are closed by end caps 40. Specifically, a long cylindrical body is formed by fixing the cover member 30 and the frame 20, and end caps 40 are attached to both longitudinal ends of the cylindrical body. A spatial region S2 is formed between the cover member 30 and the frame 20. This spatial region S2 is an area (insect-proof area) configured to prevent the intrusion of foreign objects such as insects and dust, and is an area surrounded by the main portion 31 of the cover member 30 and the main plate portion 21 of the frame 20. Specifically, the spatial region S2 is an area enclosed by the main portion 31 and extension portion 32 of the cover member 30, the main plate portion 21 of the frame 20, and the end caps 40. The light source unit 10 is disposed in this spatial region S2.

[0155] The end cap 40 is a component that prevents foreign objects such as insects and dust from entering the interior of the cylindrical body formed by the cover member 30 and the frame 20. The end cap 40 is provided to close the open end of the cylindrical body formed by the frame 20 and the cover member 30. In other words, the end cap 40 is attached to the cylindrical body formed by the frame 20 and the cover member 30 so as to cover the open end of the cylindrical body, thereby closing the open end of the cylindrical body. This makes it possible to prevent foreign objects such as insects and dust from entering the interior of the cylindrical body formed by the frame 20 and the cover member 30. In other words, it is possible to prevent foreign objects such as insects and dust from entering the spatial region S2.

[0156] 5 to 9, 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.

[0157] As shown in FIG. 9, the end cap 40 provided at one longitudinal end of the cover member 30 is a first end cap 40a, and the end cap 40 provided at the other longitudinal end of the cover member 30 is a second end cap 40b. In this embodiment, the first end cap 40a and the second end cap 40b are the same component. That is, the shape of the second end cap 40b is the same as the shape of the first end cap 40a. This allows for cost reduction. The first end cap 40a and the second end cap 40b are arranged in opposite directions in the longitudinal direction (Y-axis direction) of the cover member 30.

[0158] As shown in FIGS. 5 and 9, the end cap 40 has a plate-shaped main portion 41, a connecting portion 42 that is directly or indirectly connected to the cover member 30, and a protruding piece 43 that protrudes from the main portion 41.

[0159] The main portion 41 constitutes the main body of the end cap 40, and mainly functions to cover the open end of the cylindrical body formed by the cover member 30 and the frame 20. In this embodiment, all or a part of the plate-shaped main portion 41 is translucent. As such, the main portion 41 having translucency allows light from the light source unit 10 to pass through. In other words, light emitted from the LEDs 12 of the light source unit 10 passes through the main portion 41 and is extracted to the outside of the end cap 40.

[0160] Specifically, the entire end cap 40 is translucent. Therefore, the entire main portion 41 and the entire connecting portion 42 are translucent. The translucent end cap 40 may be transparent or may have diffusive properties. By using an end cap 40 that is translucent and diffusive, the light from the LEDs 12 that enters the end cap 40 is diffused (scattered) by the end cap 40 and passes through the end cap 40.

[0161] The end cap 40 is made of a translucent material such as a translucent resin material, such as acrylic or polycarbonate, or a translucent material such as a glass material. In this embodiment, the end cap 40 is made of a translucent resin material. In this case, the end cap 40 can be a diffusing member having a light diffusing material dispersed therein. Such an end cap 40 can be produced by resin molding a translucent resin material mixed with a light diffusing material into a predetermined shape. Light-reflecting fine particles such as silica particles can be used as the light diffusing material.

[0162] The translucent and diffusive end cap 40 may be constructed by forming a milky white light-diffusing film containing a light-diffusing material on the surface (inner or outer surface) of a transparent end cap, rather than dispersing a light-diffusing material inside. The end cap 40 may also be configured to have light-diffusive properties by diffusing the material rather than using a light-diffusing material. For example, the end cap 40 may be configured to have light-diffusive properties by applying a surface treatment such as a graining process to form minute irregularities on the surface of the transparent end cap, or by printing a dot pattern on the surface of the transparent end cap. Even when the end cap 40 is subjected to a diffusive process, it may further contain a light-diffusive material to enhance light-diffusive properties.

[0163] The end cap 40 may be made of the same material as the cover member 30 or may be made of a different material from the cover member 30.

[0164] Furthermore, the main portion 41 does not have to be light-transmitting. In this case, the entire end cap 40 does not have to be light-transmitting. For example, an example of a light-opaque end cap 40 is one that has light-blocking (light-absorbing) or light-reflecting properties. In this case, the end cap 40 is made of, for example, a white, black, or colored resin material. Furthermore, the end cap 40 may have a light-transmitting portion and a light-opaque portion.

[0165] The shape of the main portion 41 in a front view is, for example, a flattened kamaboko shape as a whole. Therefore, the outer shape of one side of the main portion 41 in the Z-axis direction is a curved shape that is curved in an arc shape so as to follow the shape of the cover member 30. The thickness of the plate-shaped main portion 41 is constant. As an example, the thickness of the main portion 41 is 1 mm to 5 mm, but is not limited to this. Note that the thickness of the main portion 41 is constant over the entire area of ​​the main portion 41, but is not limited to this.

[0166] In this embodiment, the end cap 40 has a D-shape as a whole when viewed from the longitudinal direction of the LED lighting device 3. Specifically, the main portion 41 also has a D-shape as a whole when viewed from the longitudinal direction of the LED lighting device 3. As described above, the side surface of the LED lighting device 1, which is composed of the LED lighting device 3 and the fixture body 2, also has a D-shape as a whole, making the boundary between the LED lighting device 3 and the fixture body 2 less noticeable. Therefore, when viewed from the Y-axis direction, the outer surface of the main portion 41 of the end cap 40 is flush with the outer surface (inclined surface) of the inclined surface portion 2b of the fixture body 2. In other words, the outer surface of the main portion 41 and the outer surface of the inclined surface portion 2b are continuous, and there is no or only a slight step at the boundary between the outer surface of the main portion 41 and the outer surface of the inclined surface portion 2b. In addition, the outer surface of the main portion 41 of the end cap 40 and the outer surface of the main portion 31 of the cover member 30 are also continuous and flush with each other in the Y-axis direction.

[0167] The main portion 41 has an inner surface 41a and an outer surface 41b as surfaces in the thickness direction of the main portion 41. In the end cap 40, the inner surface 41a is the end on the LED 12 side, and the outer surface 41b is the surface on the opposite side from the LED 12 side. As described above, in this embodiment, the entire main portion 41 is translucent, so that light emitted from the LED 12 and entering the main portion 41 passes through the entire main portion 41. Therefore, the inner surface 41a of the main portion 41 serves as a light incident surface onto which light from the LED 12 enters, and the outer surface 41b of the main portion 41 serves as a light exit surface from which light from the LED 12 exits to the outside.

[0168] The main portion 41 is curved concavely as a whole, recessed inward. As an example, the outer surface 41b and the inner surface 41a of the main portion 41 are parabolic. In this embodiment, the main portion 41 is inclined as a whole so that the upper portion (ceiling side portion) is recessed more inward than 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 more inward than the peripheral portions in the width direction, which is the X axis direction.

[0169] The main portion 41 does not have to have a curved shape that recedes inward (i.e., convex inward). For example, the main portion 41 may have a curved shape that convex outward. The main portion 41 also does not have to have a curved shape. 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.

[0170] The connecting portion 42 is formed at the floor-side end of the main portion 41. The connecting portion 42 is formed so as to stand on the inner surface 41a of the main portion 41. The connecting portion 42 is formed at a curved portion of the outer periphery of the main portion 41. In other words, the connecting portion 42 is formed at a portion corresponding to the main portion 31 of the cover member 30. In this embodiment, the connecting portion 42 is directly connected to the cover member 30. Specifically, the connecting portion 42 is fitted into the main portion 31 of the cover member 30.

[0171] The protruding piece 43 is formed at the end of the main portion 41 on the ceiling side. The protruding piece 43 is formed to stand on the inner surface 41a of the main portion 41. The protruding piece 43 protrudes to face 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 protruding piece 43 also extends in the X-axis direction.

[0172] As shown in FIG. 5, an elastic member 44 is provided at the ceiling-side end of the main portion 41. The elastic member 44 is attached to the main plate portion 21 side portion of the protruding piece 43. The elastic member 44 is an elastic body made of, for example, a resin material, and is elastically deformable. In this embodiment, the elastic member 44 is made of an elastomer. As an example, the elastic member 44 is made of silicone rubber and has rubber elasticity. Note that the elastic member 44 made of an elastomer is not limited to a solid molded product, and may also be a foam molded product.

[0173] The elastic member 44 functions as a packing member and is provided 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, the elastic member 44 also extends in the X-axis direction, as shown in FIGS. 5 and 9. In this embodiment, the elastic member 44 is formed in a thin plate shape. As shown in FIG. 5, the thin plate-shaped elastic member 44 is provided in an inclined state in the gap between the ceiling side portion of the end cap 40 and the main plate portion 21 of the frame 20. The provision of the elastic member 44 can enhance the effect of preventing foreign objects such as insects from entering the space region S2 between the cover member 30 and the frame 20 (insect-repellent effect). Note that, although the elastic member 44 is provided in this embodiment, the elastic member 44 need not be provided. In this case, it is preferable that the gap between the end cap 40 and the frame 20 be as small as possible.

[0174] In the present embodiment, the connecting portion 42 and the cover member 30 are in contact with each other, but this is not limiting. For example, a ring-shaped packing member may be disposed between the connecting portion 42 and the cover member 30 so as to surround the connecting 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 and the end face of the main portion 31 of the cover member 30.

[0175] The end cap 40 configured in this manner is fixed to the cover member 30. In this case, the end cap 40 is provided so that no gap is formed between it and the cover member 30. Specifically, the end cap 40 is fitted into the open end of the cover member 30 so that the connection 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.

[0176] 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 them together.

[0177] 3 and 4, a spatial region S3 is formed on the ceiling side of the frame 20. That is, the spatial region S3 exists between the fixture body 2 and the frame 20. The spatial region S3 also occupies part or all of the recess 2a of the fixture body 2.

[0178] The power supply unit 4 is disposed in this spatial region S3. That is, the power supply unit 4 is disposed on the ceiling side of the frame 20. In this embodiment, the center position of the power supply unit 4 is shifted from the center position in the short-side direction of the LED lighting device 3, and the power supply unit 4 is disposed in the spatial region S3 so as to be biased in the short-side direction of the LED lighting device 3 (the short-side direction of the frame 20). Specifically, the power supply unit 4 is biased toward the metal fitting 5 (the left side in FIG. 4). In addition, the side plate portion 24 of the frame 20 is shortened, and the circuit board 4a of the power supply unit 4 is located closer to the ceiling side than the tip of the side plate portion 24 of the frame 20 within the circuit case 4c.

[0179] Furthermore, because the portion of the circuit case 4c of the power supply unit 4 facing the frame 20 is open, the second direction side of the horizontal plate portion 23 is open toward the circuit case 4c of the power supply unit 4. Therefore, the spatial area defined by the protruding portion 20b of the frame 20 and the spatial area inside the circuit case 4c are in communication. This allows the spatial area defined by the protruding portion 20b of the frame 20 to be effectively utilized.

[0180] Electrical wires used in the LED lighting device 3 may be arranged in the spatial region S3 between the fixture body 2 and the frame 20. The electrical wires used in the LED lighting device 3 include construction electrical wires (construction wiring) that are wired when the LED lighting fixture 1 is installed on a ceiling or the like, and internal electrical wires (internal wiring) that are wired in a factory when the LED lighting device 3 is manufactured.

[0181] Examples of construction wires include power lines such as VVF cables and signal lines such as dimming signal lines. Construction wires such as power lines and signal lines are drawn out from the ceiling, for example, and connected to predetermined locations on the LED lighting fixture 1 when the LED lighting fixture 1 is installed. For example, power lines such as VVF cables are connected to a power terminal block 8, and dimming signal lines are connected to a dimming terminal block 9. Examples of internal fixture wires arranged in the space region S3 include the internal fixture wires described above. As will be described later, the space region S3 accommodates not only the power supply unit 4 but also the control unit 50.

[0182] Since a lead wiring may be installed inside the LED lighting fixture 1, it is desirable that there is space for at least one power line such as a VVF cable to pass through in the spatial region S3 between the LED lighting device 3 and the recess 2a of the fixture body 2. The lead wiring may be held (temporarily held or arranged) on the fixture body 2 side, or may be held (temporarily held or arranged) on the LED lighting device 3 side.

[0183] As an example, FIG. 4 shows an example in which a VVF cable 71 and a signal line 72 are arranged as construction wires in the spatial region S3. In this case, in the present embodiment, the power supply unit 4 is arranged unevenly in the spatial region S3, so that the ceiling side of one of the pair of horizontal plate portions 23 of the frame 20 (the right horizontal plate portion 23 in FIG. 4) is open. As a result, as shown in FIG. 4, in the region in the spatial region S3 where the power supply unit 4 is present, one side in the short direction of the LED lighting device 3 is larger than the other side. In other words, one of the two sides of the power supply unit 4 in the spatial region S3 is a wide region, and the other side of the two sides of the power supply unit 4 in the spatial region S3 is a narrow region. Therefore, it is preferable to arrange the construction wires in the wider of the two regions on either side of the power supply unit 4. In particular, in this embodiment, the length (height) of the side plate portions 24 of the frame 20 is short, so that the vertical space around the side plate portions 24 in the spatial region S3 can be further widened. Therefore, the construction wires can be arranged by effectively utilizing this expanded spatial region S3. For example, the construction wires can be arranged close to the ceiling end of the spatial region S3 on the fixture body 2 side. In this way, the construction wires can be arranged by effectively utilizing the expanded spatial region S3, which prevents the LED lighting device 3 from being lifted due to interference from the construction wires, thereby preventing a gap from being created between the fixture body 2 and the LED lighting device 3.

[0184] Furthermore, the construction wires may be arranged separately in a wide area and a narrow area in the spatial area S3. In this case, the VVF cable 71, which is a relatively thick wire, may be arranged in the wide area of ​​the two areas on either side of the power supply unit 4, and the signal wire 72, which is a relatively thin wire, may be arranged in the narrow area of ​​the two areas on either side of the power supply unit 4.

[0185] The power supply units 4 do not have to be arranged unevenly in the width direction of the frame 20, but may be arranged in the center of the width direction of the frame 20. In this case, the construction wires and the internal wires of the fixture may be arranged on both sides of the power supply unit 4. In other words, wiring insertion portions may be provided on both sides of the power supply unit 4.

[0186] 3 and 4, in the LED lighting device 3 according to this embodiment, a spatial region is formed on the ceiling side of the protrusion 20b formed on the frame 20. This spatial region can also be used to store components such as functional components or internal electric wires. Note that the use of this spatial region is not limited to storing components such as functional components or internal electric wires, and this spatial region can also be used for centering metal fittings, positioning metal fittings, guiding metal fittings, earthing, etc.

[0187] The LED lighting device 3 configured as described above is housed in the recess 2a of the fixture body 2 and attached to the fixture body 2. Specifically, the LED lighting device 3 is attached to the fixture body 2 using a hook 5 and an elastic holding member 6 shown in Figures 3, 6 and 7. The hook 5 and the elastic holding member 6 are fixed to the frame 20.

[0188] As shown in FIG. 3, the hook fitting 5 is arranged on the ceiling side of the frame 20. The hook fitting 5 is a plate member made of sheet metal. The hook fitting 5 is fixed to the end of the frame 20. As an example, the hook fitting 5 is fixed to the frame 20 with a fixing member such as a screw, and extends so as to protrude outward from the frame 20. The hook fitting 5 is hooked onto the fixture main body 2. In this embodiment, a slit 2c (see FIG. 2) is provided on the inner wall surface of the recess 2a of the fixture main body 2, and the hook fitting 5 is hooked onto this slit 2c.

[0189] The elastic holding member 6 is a component for attaching the LED lighting device 3 to the fixture body 2. In this embodiment, the elastic holding member 6 is, for example, a spring such as a kick spring, and the LED lighting device 3 is pulled up toward the fixture body 2 by the elastic force of the elastic holding member 6. The elastic holding member 6 is attached to the ceiling side (rear surface) of the main board portion 21 of the frame 20. Specifically, the elastic holding member 6 is fixed to an end portion of the frame 20 in the width direction. In this embodiment, the elastic holding member 6 is fixed to the frame 20 on the opposite side from the hook metal fitting 5 in the width direction. In this case, the elastic holding member 6 is fixed to the frame 20 by a fixing member such as a screw. Specifically, the elastic holding member 6 is fixed to a holding metal fitting 6c (see FIG. 7 ) fixed to the frame 20 by an attachment screw. The elastic holding member 6 is detachably attached to the fixture body 2. In this embodiment, the elastic holding member 6 is detachably engaged with a receiving metal fitting 7 fixed to the fixture body 2.

[0190] 2, two hooks 5 and two elastic holding members 6 are provided at each end of the frame 20 in the longitudinal direction, but this is not limited to this. Also, the hooks 5 and the elastic holding members 6 are provided at positions facing each other in the lateral direction of the frame 20, but this is not limited to this.

[0191] Next, a method for attaching the LED lighting device 3 to the fixture body 2 will be described with reference to Fig. 10. Fig. 10 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.

[0192] When attaching the LED lighting device 3 to the fixture body 2 installed on the ceiling 100, first, as shown in Figure 10 (a), the hooking bracket 5 is hooked into the slit 2c (see Figure 2) provided in the fixture body 2 to hang the LED lighting device 3 in a cantilevered state, and the power supply unit 4 is connected to the power line drawn from the ceiling, and one end of the elastic holding member 6, which is a kick spring, is engaged with the receiving bracket 7 fixed to the fixture body 2.

[0193] Next, as shown in (b) of Figure 10, the hook fitting 5 is pushed deep into the slit 2c while the LED lighting device 3 is rotated around the hook fitting 5 as a fulcrum, thereby pushing the LED lighting device 3 up into the recess 2a of the fixture body 2.

[0194] In this embodiment, the power supply unit 4 is disposed offset to one side in the width direction of the frame 20. Specifically, the power supply unit 4 is disposed closer to the rotation axis when rotating the LED lighting device 3. In this way, by disposing the heavy power supply unit 4 closer to the rotation axis, the LED lighting device 3 can be rotated with a small force.

[0195] Then, by rotating the LED lighting device 3 and pushing it into the recess 2a of the fixture body 2, the LED lighting device 3 can be fitted into the recess 2a of the fixture body 2, as shown in (c) of Figure 10. At this time, the LED lighting device 3 is pulled up by the elastic force of the elastic holding member 6 (kick spring), so that the outer extension portion 32a of the extension portion 32 abuts against the opening edge 2a1 of the recess 2a of the fixture body 2. This allows the LED lighting device 3 to be attached to the fixture body 2.

[0196] When removing the LED lighting device 3 from the fixture body 2, the LED lighting device 3 can be removed from the fixture body 2 by performing the above-described operations in reverse. For example, the LED lighting device 3 can be removed from the fixture body 2 by rotating it while pulling it down.

[0197] The control unit 50 will now be described in detail with reference to Figs. 11 to 21. Fig. 11 is a cross-sectional view of the LED illumination device 3 taken along the XZ plane passing through the control unit 50. Fig. 12 is a cross-sectional view of the LED illumination device 3 taken along the YZ plane. Fig. 13 is a cross-sectional perspective view of the LED illumination device 3. Figs. 14 and 15 are perspective views of the power supply unit 4 and the control unit 50. Fig. 16 is a plan view of the power supply unit 4 and the control unit 50. Figs. 17 to 19 are perspective views of the control unit 50. Fig. 20 is a view showing the control unit 50 as seen from the opening side of the case 51. Fig. 21 is a plan view of the control unit 50.

[0198] 11 has a function of controlling the light source section 10. Specifically, the control unit 50 controls the light emission mode of the light source section 10. That is, the control unit 50 controls the light emission mode of the LEDs 12 of the light source section 10. For example, the control unit 50 controls the light emission mode of the LEDs 12 by switching the LEDs 12 on and off, changing the brightness of the LEDs 12, or changing the color temperature of the LEDs 12.

[0199] In this embodiment, the control unit 50 is an infrared receiving module having a function of receiving infrared rays. In this case, the control unit 50 controls the light emission mode of the light source unit 10 by receiving an infrared signal from a transmitter such as a remote control operated by a user. In this case, the infrared signal is, for example, a remote control signal for turning the LED 12 on or off or adjusting the brightness or color of the LED 12.

[0200] The control unit 50 controls the light source section 10 by controlling the power supply unit 4. Therefore, the control unit 50 and the power supply unit 4 are electrically connected. Specifically, as shown in FIGS. 12 and 14 to 16, the control unit 50 and the power supply unit 4 are connected by an electric wire 80. In order for the control unit 50 to control the power supply unit 4, the electric wire 80 includes a signal line for transmitting a control signal from the control unit 50 to the power supply unit 4. For example, if the control unit 50 is an infrared receiving module, the control unit 50 transmits a detected detection signal or a control signal based on the detection signal to the power supply unit 4 by the electric wire 80.

[0201] Furthermore, the control unit 50 operates using power supplied from the power supply unit 4. In this case, the control unit 50 is connected to the secondary side of the power supply unit 4 (i.e., the power output side (DC side) of the power supply unit 4), and the electric wire 80 includes a power line that supplies power from the power supply unit 4 to the control unit 50.

[0202] In this embodiment, the electric wire 80 includes three electric wires: one signal wire and a pair of power wires. Each of the three electric wires is an insulating coated wire in which a conductor (such as a metal wire) serving as a core is coated with an insulating film. The diameter of one insulating coated wire is, for example, about 1 mm. The electric wire 80 may also be configured as a single cable in which three electric wires are bundled together and covered with an outer sheath. The electric wire 80 may also be configured as only one or two insulating coated wires, or as four or more insulating coated wires.

[0203] 11 to 13, the control unit 50, like the power supply unit 4, is arranged on the second surface 21b side of the main board portion 21 of the frame 20. In other words, the control unit 50 is arranged on the ceiling side of the frame 20. Specifically, the control unit 50 is arranged adjacent to the power supply unit 4. As shown in FIGS. 14 to 16, in this embodiment, the control unit 50 and the power supply unit 4 are arranged side by side in the Y-axis direction. In other words, the control unit 50 and the power supply unit 4 are arranged side by side in the longitudinal direction of the LED lighting device 3. The control unit 50 is also attached to the power supply unit 4. In other words, the control unit 50 is held in the LED lighting device 3 by being fixed to the power supply unit 4.

[0204] In this embodiment, the control unit 50 is a function expansion unit that can expand the functions of the LED lighting device 3. Therefore, the control unit 50 may be pre-assembled in the LED lighting device 3 at a factory that manufactures the LED lighting device 3, or an installer may retrofit the control unit 50 to the LED lighting device 3 at the installation site if the LED lighting device 3 does not have the control unit 50.

[0205] As shown in FIGS. 17 to 21, the control unit 50 has a box-shaped case 51 with one end open, and a control board 52 housed in the case 51.

[0206] The case 51 is a housing that houses the control board 52. The case 51 may be made of a resin material or a metal material. As will be described later, the electric wires 80 are locked to the case 51, and therefore the case 51 is made of a resin material. In this embodiment, the case 51 is made of an insulating resin material. As an example, the resin material that makes up the case 51 is PBT (polybutylene terephthalate), but is not limited to this.

[0207] 17 to 21, case 51 is a cylindrical member with a bottom, and has first plate portion 51a, second plate portion 51b, third plate portion 51c, and fourth plate portion 51d. First plate portion 51a, second plate portion 51b, third plate portion 51c, and fourth plate portion 51d form the cylindrical portion of case 51. Case 51 also has bottom portion 51e that closes one opening of this cylindrical portion.

[0208] The first plate portion 51a faces the frame 20. Specifically, the first plate portion 51a faces the main plate portion 21 of the frame 20. The second plate portion 51b faces the first plate portion 51a. The third plate portion 51c and the fourth plate portion 51d face each other and are located between the first plate portion 51a and the second plate portion 51b.

[0209] The opening of case 51 configured in this manner is closed by a lid. This makes it possible to prevent foreign matter such as insects and dust from entering case 51. As shown in FIGS. 12 and 14 to 16, in this embodiment, the opening of case 51 is covered by a part of circuit case 4c of power supply unit 4. In other words, the part of circuit case 4c of power supply unit 4 serves as a lid to cover the opening of case 51.

[0210] The control board 52 shown in Fig. 11 is, for example, a printed wiring board on which metal wiring is formed in a predetermined pattern. As shown in Fig. 11, a plurality of circuit components 52a are mounted on the control board 52. In this embodiment, the control unit 50 is an infrared receiving module, and therefore, as shown in Figs. 11 and 13, the plurality of circuit components 52a includes a light receiving element 52a1 that receives infrared rays.

[0211] The control board 52 is disposed in the case 51 in a position where it stands on the first plate portion 51a and the second plate portion 51b. Therefore, one surface of the control board 52 faces the third plate portion 51c, and the other surface of the control board 52 faces the fourth plate portion 51d.

[0212] As shown in FIGS. 12, 14, and 16, one end (first end) of an electric wire 80 is connected to the control board 52. Specifically, one end of the electric wire 80 is connected to a connector 52b provided on the control board 52. The other end (second end) of the electric wire 80 is connected to a circuit board 4a of the power supply unit 4. Specifically, the other end of the electric wire 80 is connected to a connector 4a1 provided on the circuit board 4a of the power supply unit 4. Note that a connector may be provided at each of the one end and the other end of the electric wire 80. In this case, one of the connectors of the electric wire 80 is connected to the connector 52b of the control board 52, and the other connector of the electric wire 80 is connected to the connector 4a1 of the circuit board 4a. This mechanically and electrically connects the electric wire 80 to the circuit board 4a and the control board 52.

[0213] As shown in FIGS. 11 and 14, a pair of ribs 51f is provided on the surface of the first plate portion 51a of the case 51 facing the frame 20. The pair of ribs 51f are in contact with the frame 20. Therefore, as shown in FIGS. 11 and 12, the first plate portion 51a and the frame 20 do not contact each other, and a gap G exists between the first plate portion 51a and the frame 20. Specifically, the gap G exists between the first plate portion 51a and the main plate portion 21 of the frame 20. A portion of the electric wire 80 is disposed in this gap G. In other words, the electric wire 80 extending from the control board 52 of the control unit 50 is routed through the gap G and connected to the circuit board 4a of the power supply unit 4. The distance of the gap G is preferably equal to or greater than the wire diameter of the electric wire 80.

[0214] 13 and 14, a through-hole 51g is provided in the case 51. The through-hole 51g is provided at a position facing the light-receiving element 52a1 provided on the control board 52. The through-hole 51g is provided in the first plate portion 51a of the case 51. That is, the through-hole 51g is provided on the frame 20 side. As shown in FIG. 13, the through-hole 51g faces the through-hole 21e provided in the main plate portion 21 of the frame 20. That is, the through-hole 51g of the case 51 and the through-hole 21e of the frame 20 are provided at positions overlapping in the Z-axis direction. As a result, infrared light that has transmitted through the cover member 30 passes through the through-hole 21e of the frame 20 and the through-hole 51g of the case 51 and enters the light-receiving element 52a1. The opening shapes of the through-hole 51g and the through-hole 21e are, for example, circular, but are not limited thereto.

[0215] 13, 14, and 16, a tubular portion 51h (guide portion) surrounding the through hole 51g is provided on the outer surface of the first plate portion 51a of the case 51. The opening of the tubular portion 51h is larger than the opening of the through hole 51g. In this embodiment, the tubular portion 51h is cylindrical. Therefore, the opening of the tubular portion 51h is circular, and the diameter of the tubular portion 51h is larger than the diameter of the circular through hole 51g. By providing the tubular portion 51h surrounding the through hole 51g in this manner, it is possible to prevent foreign matter such as insects or dust from entering the case 51 through the through hole 51g and attaching to the light receiving element 52a1. As a result, it is possible to prevent a decrease in the detection accuracy of the light receiving element 52a1 due to the attachment of foreign matter to the light receiving element 52a1. Note that the tubular portion 51h is preferably formed in a shape that does not affect the light distribution of the light (infrared light) received by the light receiving element 52a1. Specifically, the opening diameter of the cylindrical portion 51h is preferably set to a size such that the light received by the light receiving element 52a1 is not blocked by the cylindrical portion 51h.

[0216] As described above, the control unit 50 is fixed to the power supply unit 4. Specifically, the case 51 of the control unit 50 is connected to the circuit case 4c of the power supply unit 4. As shown in FIGS. 14 and 15 , in this embodiment, the case 51 is provided with locking portions 51i, and the locking portions 51i are engaged with locking holes provided in the circuit case 4c, thereby connecting the case 51 of the control unit 50 to the circuit case 4c of the power supply unit 4.

[0217] As shown in FIGS. 12 to 14 and 16 to 21, the case 51 is provided with an electric wire processing portion 53 formed by cutting out a portion of the case 51. Therefore, the electric wire processing portion 53 passes through the case 51. The electric wire processing portion 53 is formed in a slit shape. The electric wire processing portion 53 is provided on the first plate portion 51a of the case 51, and faces the frame 20 as shown in FIG. 12. As shown in FIGS. 16 to 21, the electric wire processing portion 53 is formed so as to be cut out from the end of the opening of the case 51 in the first plate portion 51a.

[0218] The electric wire processing section 53 has a wiring processing function of processing the electric wires 80. Specifically, the electric wire processing section 53 is used to hold the electric wires 80 in the case 51 so that the electric wires 80 do not get caught when the control unit 50 is fixed to the power supply unit 4. In other words, the electric wire processing section 53 functions as a wire fastening section when wiring the electric wires 80. Specifically, as shown in FIGS. 14 and 16 , the electric wires 80 are inserted into the electric wire processing section 53 and held by the electric wire processing section 53.

[0219] 16 to 21, the electric wire processing section 53 has an electric wire passing section 53a into which the electric wire 80 is inserted, and an electric wire holding section 53b that holds the electric wire 80 that has passed through the electric wire passing section 53a. The electric wire passing section 53a includes a section that is cut out from the end of the opening of the case 51 as an entrance of the electric wire processing section 53. The electric wire holding section 53b is provided at a position on the far side of the electric wire processing section 53.

[0220] 21, in this embodiment, the slit-shaped electric wire processing portion 53 has a J-shape in plan view. In this case, the electric wire routing portion 53a is a straight portion of the J-shape, and the electric wire holding portion 53b is a tip end of a curved portion of the J-shape. The J-shaped electric wire processing portion 53 is provided so that the curved portion of the J-shape faces the control board 52. In other words, the electric wire holding portion 53b, which is the tip end of the curved portion of the J-shape, is located closer to the control board 52 than the electric wire routing portion 53a.

[0221] The wire processing section 53 also has a constricted portion 53c where the opening width of the wire processing section 53 is partially narrowed. The constricted portion 53c is provided at the boundary between the wire routing section 53a and the wire holding section 53b. Providing such a constricted portion 53c can prevent the wire 80 from slipping out of the wire holding section 53b. That is, once the wire 80 passes from the wire routing section 53a through the constricted portion 53c and is held by the wire holding section 53b, the wire 80 is caught by the constricted portion 53c when it attempts to return to the wire routing section 53a. As a result, the wire 80 can be retained in the wire holding section 53b, preventing the wire 80 from slipping out of the wire holding section 53b. The width (opening width) of the constricted portion 53c is preferably equal to or smaller than the wire diameter of the wire 80. This ensures that when the electric wire 80 held by the electric wire holding portion 53b tries to return to the electric wire passing portion 53a, the electric wire 80 is reliably caught by the constricted portion 53c, thereby further preventing the electric wire 80 from slipping out of the electric wire holding portion 53b.

[0222] Next, a method for wiring the electric wires 80 when fixing the control unit 50 to the power supply unit 4 will be described with reference to Figs. 22 and 23. Figs. 22 and 23 are diagrams for explaining a method for wiring the electric wires 80 when fixing the control unit 50 to the power supply unit 4. Fig. 22 is a diagram showing how the electric wires 80 connected to the control unit 50 are connected to the power supply unit 4. Fig. 23 is a diagram showing how the control unit 50 and the power supply unit 4 connected by the electric wires 80 are coupled together. Note that Figs. 22(a) and 22(b) do not show the portion of the electric wires 80 drawn out from the case 51, and only a cross section of the electric wires 80 at the electric wire processing section 53 is shown.

[0223] When connecting the control unit 50 to the power supply unit 4, the electric wire 80, one end of which is connected to the control board 52 of the control unit 50, is held in the case 51 of the control unit 50. Specifically, the electric wire 80 is held in the electric wire processing section 53 provided in the case 51 of the control unit 50.

[0224] In this case, as shown in (a) of Figure 22, the electric wire 80, one end of which is connected to the connector 52b of the control board 52, is inserted through the notched end of the electric wire passing section 53a in the electric wire processing section 53, and the electric wire 80 inserted through the electric wire passing section 53a is slid toward the rear (the opposite side to the notched end) along the longitudinal direction of the electric wire passing section 53a.

[0225] Then, the electric wire 80 is slid further toward the rear, and as shown in Figure 22 (b), the electric wire 80 is pushed in and passed through the constricted portion 53c. As a result, the electric wire 80 is hooked onto and held by the electric wire holding portion 53b in a state in which it has been pulled out from the electric wire holding portion 53b toward the power supply unit 4. Specifically, the electric wire 80, one end of which is connected to the connector 52b, is once pulled out to the side opposite the power supply unit 4 side within the case 51, passes through the electric wire holding portion 53b of the electric wire processing portion 53, and is hooked onto the case 51 in a state in which it has been pulled out toward the power supply unit 4 side.

[0226] In this embodiment, the electric wire holding portion 53b is located closer to the control board 52 than the electric wire passing portion 53a. That is, the electric wire 80 approaches the connector 52b provided on the control board 52 from the electric wire passing portion 53a toward the electric wire holding portion 53b. This allows the electric wire 80 to be easily inserted into the electric wire passing portion 53a when the electric wire 80 is held in the electric wire processing portion 53, and also allows the electric wire 80 to be easily moved to the electric wire holding portion 53b located further ahead.

[0227] After the electric wire 80 is held by the electric wire processing section 53, the other end of the electric wire 80 pulled out from the electric wire holding section 53b is connected to the connector 4a1 of the circuit board 4a of the power supply unit 4, as shown in Fig. 22(c). In this way, with the electric wire 80 hooked onto the control unit 50, the circuit board 4a of the power supply unit 4 and the control board 52 of the control unit 50 can be electrically connected by the electric wire 80.

[0228] 23, the control unit 50 is fixed to the power supply unit 4. Specifically, the locking portion 51i provided on the case 51 of the control unit 50 is locked into the locking hole provided on the circuit case 4c of the power supply unit 4. This connects the case 51 and the circuit case 4c, allowing the control unit 50 to be fixed to the power supply unit 4.

[0229] At this time, in the present embodiment, since the electric wire 80 is held by the electric wire processing section 53 of the control unit 50, it is possible to prevent the electric wire 80 from being pinched between the control unit 50 and the power supply unit 4 when connecting the control unit 50 to the power supply unit 4. In other words, it is possible to prevent the electric wire 80 from being pinched.

[0230] Furthermore, even if one of the control unit 50 and the power supply unit 4 is pulled while the control unit 50 and the power supply unit 4 are connected by the electric wire 80, the electric wire 80 is caught and held by the electric wire processing section 53 of the control unit 50, which prevents the electric wire 80 from coming off the control board 52 or the circuit board 4a or from breaking a part of the electric wire 80. In other words, the electric wire processing section 53 also functions as a tension stopper for the electric wire 80.

[0231] As described above, the LED lighting device 3 according to this embodiment includes a light source section 10 and a control unit 50. The control unit 50 has a box-shaped case 51 with one open end and a control board 52 housed in the case 51. One end of the electric wire 80 is connected to the control board 52, and the case 51 is provided with an electric wire processing section 53 formed by cutting out a part of the case 51. The electric wire processing section 53 has an electric wire passing section 53a into which the electric wire 80 is inserted, and an electric wire holding section 53b that holds the electric wire 80 that has passed through the electric wire passing section 53a.

[0232] This configuration makes it possible to prevent the electric wires 80 from getting caught when fixing the control unit 50 connected to the electric wires 80, without providing a separate wiring processing component. For example, when connecting the control unit 50 and the power supply unit 4 connected by the electric wires 80, the work can be performed with the electric wires 80 hooked and held by the electric wire processing part 53, so that the control unit 50 can be fixed to the power supply unit 4 without the electric wires 80 getting caught between the control unit 50 and the power supply unit 4.

[0233] Furthermore, the LED lighting device 3 according to this embodiment includes a frame 20 having a main board 21 on which the light source unit 10 is arranged, the main board 21 having a first surface 21a on the light source unit 10 side and a second surface 21b facing away from the first surface 21a, and the control unit 50 is arranged on the second surface 21b side of the main board 21.

[0234] With this configuration, the control unit 50 can be arranged next to the power supply unit 4, which is arranged on the second surface 21b side of the main board portion 21. This makes it possible to easily connect the other end of the electric wire 80 to the power supply unit 4. Furthermore, by arranging the control unit 50 next to the power supply unit 4, the control unit 50 can also be easily connected and fixed to the power supply unit 4.

[0235] In the LED lighting device 3 according to this embodiment, the case 51 of the control unit 50 has a first plate portion 51a facing the frame 20, and the electric wire processing portion 53 is provided on the first plate portion 51a.

[0236] This configuration allows the control unit 50 and the power supply unit 4 to be easily connected with the electric wire 80, and also allows the control unit 50 to be easily fixed to the power supply unit 4 with the electric wire 80 hooked and held in place by the electric wire processing section 53.

[0237] In the LED lighting device 3 according to this embodiment, a gap G exists between the first plate portion 51 a of the case 51 and the frame 20 .

[0238] With this configuration, even if the electric wires 80 have redundant lengths, the excess electric wires 80 can be stored in the gap G. This allows the use of electric wires 80 with redundant lengths, so that even when the control unit 50 and the power supply unit 4 are connected by the electric wires 80, the control unit 50 and the power supply unit 4 can be easily connected. In other words, the workability of assembling the control unit 50 and the power supply unit 4 can be improved.

[0239] (Variation) Although the LED lighting fixture and LED lighting device according to the present invention have been described above based on the embodiments, the present invention is not limited to these embodiments.

[0240] For example, in the above embodiment, connector 52b and light receiving element 52a1 in control unit 50 are provided on the same surface of control board 52, but this is not limiting. Specifically, as shown in control unit 50A illustrated in FIGS. 24 to 27, connector 52b and light receiving element 52a1 may be provided on opposite surfaces of control board 52. That is, connector 52b may be provided on one surface of control board 52, and light receiving element 52a1 may be provided on the other surface of control board 52. In this case, light receiving element 52a1 may be provided on the surface of control board 52 on the side where electric wire processing section 53 is not provided, and connector 52b may be provided on the surface of control board 52 on the side where electric wire processing section 53 is provided. 26, when the internal area of ​​the case 51A is divided into two areas using the control board 52 as a partition, the light receiving element 52a1 is preferably arranged in the second area A2, which is the area on the side where the electric wire processing section 53 is not provided, and the connector 52b is preferably arranged in the first area A1, which is the area on the side where the electric wire processing section 53 is provided. As a result, even if a foreign object such as an insect or dust enters the inside of the case 51A (first area A1) from the electric wire processing section 53, the foreign object will remain in the first area A1 and will not penetrate into the second area A2. In other words, the first area A1 is an area that allows the entry of foreign objects, and the second area A2 is an area that prohibits the entry of foreign objects.

[0241] In the above embodiment, the case 51 is provided with the cylindrical portion 51h and the locking portion 51i, but this is not limiting. For example, as shown in Figures 24 to 26, the case 51A does not have to be provided with the cylindrical portion 51h and the locking portion 51i.

[0242] Furthermore, in the above embodiment, the ribs 51f are provided on the case 51 of the control unit 50, but this is not limited thereto. Specifically, as in the control unit 50B shown in FIGS. 28 and 29, the ribs 51f may not be provided on the case 51B. In this case, the first plate portion 51a of the case 51B comes into surface contact with the main plate portion 21 of the frame 20, and no gap G exists between the case 51B and the frame 20. As a result, the electric wire routing portion 53a of the electric wire processing portion 53 is blocked by the main plate portion 21 of the frame 20, and only the electric wire holding portion 53b of the electric wire processing portion 53 is exposed. This makes it possible to prevent foreign matter such as insects and dust from entering the case 51B through the electric wire processing portion 53. In this modification, since there is no gap G between the case 51B and the frame 20, a groove 51j in which the electric wire 80 is placed is provided in the first plate 51a of the case 51B so that the electric wire 80 pulled out from the electric wire processing section 53 is not pinched between the case 51B and the frame 20. In other words, the electric wire 80 pulled out from the electric wire holding section 53b of the electric wire processing section 53 is stored in the groove 51j.

[0243] 30, the electric wire processing section 53C of the case 51 may have a protrusion 53d that narrows the opening width. The protrusion 53d is provided around the constricted portion 53c and further narrows the opening width of the constricted portion 53c. The protrusion 53d is provided at the position of the constricted portion 53c, but this is not limiting. For example, the protrusion 53d may be provided closer to the electric wire holding section 53b than the constricted portion 53c, or closer to the electric wire routing section 53a than the constricted portion 53c. By providing the protrusion 53d in addition to the constricted portion 53c in this way, the electric wire 80 can be further prevented from slipping out of the electric wire holding section 53b. The protrusion 53d may have a burr in the direction in which the electric wire 80 slips out. As an example, the shape of the protrusion 53d in a plan view is, for example, a right-angled triangle, and as shown in Fig. 30, the protrusion 53d is formed so that the sides other than the hypotenuse of the right-angled triangle are burrs. Note that the shape of the protrusion 53d in a plan view is not limited to a right-angled triangle. The shape of the protrusion 53d in a plan view may be a triangle other than a right-angled triangle, a polygon other than a triangle, a circle, or the like.

[0244] Furthermore, the LED lighting fixture 1 in the above embodiment uses a fixture body 2 having an inverted Fuji-shaped cross section as shown in FIG. 31(a), but this is not limited to this. For example, a fixture body 2A having a rectangular cross section as shown in FIG. 31(b) may be used. The fixture body 2A is I-shaped and does not have an inclined surface portion 2b having an inclined surface (reflective surface). Note that the fixture body 2A shown in FIG. 31(b) has a bent portion formed at the portion forming the opening edge of the recess 2a. This bent portion may be a 90-degree bend, an acute angle bend, or a hemming bend. Furthermore, the LED lighting device 3 fitted into the fixture body 2 or 2A may have a portion of the LED lighting device 3 recessed into the recess 2a of the fixture body 2 or 2A. Furthermore, the shape of the fixture body 2 is not limited to the shape shown in FIG. 31(b), and the fixture body 2 may have a shaded shape with an inclined surface portion (reflective portion) on the floor side when installed on a ceiling.

[0245] In the above embodiment, the LED lighting fixture 1 is a ceiling-mounted lighting fixture in which the fixture body 2 is directly installed on the ceiling surface, but this is not limited to this. For example, the LED lighting fixture 1 may be a ceiling-embedded lighting fixture in which the fixture body 2 is embedded in the ceiling. In this case, as shown in FIG. 31(c), the fixture body 2B is embedded in an opening provided in the ceiling 100. The LED lighting device 3 fitted into the fixture body 2B may be recessed entirely within the recess 2a of the fixture body 2B so that no part of the LED lighting device 3 protrudes from the ceiling surface of the ceiling 100, or part of the LED lighting device 3 may protrude from the ceiling surface of the ceiling 100.

[0246] In the above embodiment, the control unit 50 is an infrared receiving module, but is not limited to this. For example, the control unit 50 that controls the light source unit 10 may be a sensor unit equipped with various sensors such as a human presence sensor and a brightness sensor, or may be a wireless module having an antenna that receives wireless signals.

[0247] In the above embodiment, the control unit 50 controls the light source section 10, but this is not limiting. For example, the control unit 50 may have a light source for monitor display (monitor lamp) or an emergency light source (emergency lamp) that turns on in an emergency. In this case, the control unit 50 is preferably disposed on the first surface 21a side of the main plate section 21 of the frame 20.

[0248] Furthermore, in the above embodiment, the control unit 50 is a function expansion unit (function expansion module) that can be retrofitted to the LED illumination device 3 to expand the functions of the LED illumination device 3, but the present invention is not limited to this.

[0249] Furthermore, in the above embodiment, the control unit 50 is fixed to the power supply unit 4, but this is not limiting. For example, the control unit 50 may be fixed to the frame 20. In this case, the electric wire 80 is held by the electric wire processing section 53 of the control unit 50, and therefore, when the control unit 50 is fixed to the frame 20, it is possible to prevent the electric wire 80 from being caught between the control unit 50 and the frame 20 and becoming trapped.

[0250] In the above embodiment, the LED lighting device 3 is attached to the fixture body 2 by rotating the LED lighting device 3, but this is not limited to this. That is, the LED lighting device 3 may be attached to the fixture body 2 without rotating it. Specifically, the LED lighting device 3 may be attached to the fixture body 2 by hooking a leaf spring or the like provided on the LED lighting device 3 onto the fixture body 2 installed on the ceiling and moving the LED lighting device 3 in the vertical direction so as to translate the LED lighting device 3 toward the fixture body 2. In this case, the LED lighting device 3 can be attached to the fixture body 2 by vertically pushing and fitting the LED lighting device 3 into the recess 2a of the fixture body 2.

[0251] In the above embodiment, the LEDs 12 are SMD-type LED elements in which LED chips are mounted in a package, and the light-emitting module consisting of the substrate 11 and the LEDs 12 is an SMD-type LED module, but this is not limiting. For example, the light-emitting module consisting of the substrate 11 and the LEDs 12 may be a COB (Chip On Board) type LED module. In this case, LED chips (bare chips) themselves may be used as the LEDs 12, and multiple LEDs 12 (LED chips) may be linearly arranged on the substrate 11, and the multiple LEDs 12 may be collectively or individually sealed with a sealing member (for example, a phosphor-containing resin).

[0252] Furthermore, in the above embodiment, the cover member 30 has both diffusive and translucent properties, but this is not limiting. For example, a translucent cover that has only translucent properties out of the diffusive and translucent properties may be used instead of the cover member 30. In this case, a transparent cover with high transmittance that allows the viewer to see through may be used as the translucent cover.

[0253] In the above embodiment, the LED lighting device 3 and the LED lighting fixture 1 are long base lights, but this is not limiting. For example, the technology of the present disclosure may be applied to a downlight, a square ceiling light, or other lighting fixtures.

[0254] Furthermore, although the technology of the present disclosure has been applied to the LED lighting device 3 and the LED lighting fixture 1 in which the light source unit 10 is configured with an LED, the present disclosure is not limited to this. For example, the technology of the present disclosure may be applied to a lighting fixture or lighting fixture in which the light source unit is configured with a fluorescent lamp or the like.

[0255] In addition, the present disclosure also includes embodiments obtained by various modifications of the above-described embodiments that would occur to a person skilled in the art, and embodiments realized by arbitrarily combining the components and functions of the embodiments within the scope of the present invention. Furthermore, the present invention also includes any combination of two or more claims from among the multiple claims set forth in the claims at the time of filing, provided that there is no technical contradiction. For example, when a dependent claim set forth in the claims at the time of filing is made into a multiple claim or multiple multiple claims that cite all of the superordinate claims within the scope of the technical contradiction, the present invention also includes all combinations of claims included in that multiple claim or multiple multiple multiple claims. [Explanation of symbols]

[0256] 3 LED lighting equipment (lighting equipment) 4 Power Supply Unit 4a Circuit board 10 Light source section 20 frames 21 Main plate part 21a 1st page 21b 2nd side 50, 50A, 50B, 50C control unit 51, 51A, 51B Case 51a 1st plate part (plate part) 52 Control board 53, 53C Wire processing section 53a Electric wire passage section 53b Wire holding part 53c Waist 80 Electric wire

Claims

1. a light source unit; a control unit; The control unit has a box-shaped case with one end open and a control board housed in the case, One end of an electric wire is connected to the control board, The case is provided with an electric wire processing portion formed by cutting out a part of the case, The electric wire processing section has an electric wire passing section into which the electric wire is inserted, and an electric wire holding section that holds the electric wire that has passed through the electric wire passing section. Lighting equipment.

2. a frame having a main plate portion on which the light source portion is disposed, the main plate portion has a first surface on the light source unit side and a second surface facing away from the first surface, The control unit is disposed on the second surface side. The lighting device according to claim 1 .

3. the case has a plate portion facing the frame, The electric wire processing section is provided on the plate section, 3. The lighting device according to claim 2.

4. A gap exists between the plate portion and the frame.

4. The lighting device according to claim 3.

5. A portion of the electric wire is disposed in the gap.

5. The lighting device according to claim 4.

6. The gap is equal to or larger than the wire diameter of the electric wire.

6. The lighting device according to claim 5.

7. A constricted portion is provided at a boundary between the electric wire passing portion and the electric wire holding portion, where the opening width is narrowed. The lighting device according to any one of claims 1 to 6.

8. The width of the constricted portion is equal to or smaller than the wire diameter of the electric wire.

8. The lighting device according to claim 7.

9. A protrusion for narrowing the opening width is provided around the constricted portion.

8. The lighting device according to claim 7.

10. The electric wire holding portion is located closer to the control board than the electric wire passing portion. The lighting device according to any one of claims 1 to 6.

11. The planar shape of the wire processing portion is J-shaped. The lighting device according to any one of claims 1 to 6.

12. The opening of the case is closed by a lid. The lighting device according to any one of claims 1 to 6.

13. a power supply unit that generates power for causing the light source unit to emit light; the power supply unit has a circuit board; The other end of the electric wire is connected to the circuit board. The lighting device according to any one of claims 1 to 6.

14. The control unit is attached to the power supply unit.

14. The lighting device of claim 13.

15. The lighting device is elongated, The control unit and the power supply unit are arranged side by side in the longitudinal direction of the lighting device.

15. The lighting device of claim 14.

16. The control unit is a function expansion unit that can expand the function of the lighting device. The lighting device according to any one of claims 1 to 6.

17. The function expansion unit has a function of receiving infrared rays.

17. The lighting device of claim 16.

18. A control unit for controlling a light source unit included in a lighting device, The control unit has a box-shaped case with one end open and a control board housed in the case, One end of an electric wire is connected to the control board, The case is provided with an electric wire processing portion formed by cutting out a part of the case, The electric wire processing section has an electric wire passing section into which the electric wire is inserted, and an electric wire holding section that holds the electric wire that has passed through the electric wire passing section. Control unit.

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