Lighting devices and lighting fixtures

Abstract

A lighting device capable of suppressing the intrusion of foreign matter and malfunction with a simple configuration is provided. [Solution] The LED lighting device (3) includes a light source unit (10), a power supply unit (4), a frame (20) having a main board (21), a wireless device (60) having a light receiving unit (64) that receives optical signals, and a case (70) that houses the wireless device (60). The main board (21) has a first surface (21a) on which the light source unit (10) is disposed, a second surface (21b) facing away from the first surface (21a) and on which the power supply unit (4) and at least a portion of the wireless device (60) are disposed, and a light receiving opening (26) provided on the first surface (21a) at a position overlapping the light receiving unit (64) in a plan view. The LED lighting device (3) further includes an insect repellent sheet (80) that covers the light receiving opening (26) from the first surface (21a). The insect repellent sheet (80) overlaps the light receiving opening (26) in a plan view and includes a light-transmitting portion (81) that is transparent to optical signals and is disposed around the light-transmitting portion (81) and a peripheral portion (82) that blocks light of the same wavelength component as the optical signal.

Description

[Technical Field]

[0001] The present invention relates to a lighting device and a lighting fixture. [Background technology]

[0002] Patent Document 1 discloses an illumination device including a light source unit, a support member that supports the light source unit, and a wireless communication unit. The wireless communication unit is configured to perform wireless communication using radio waves as a medium, and also to perform infrared communication using infrared rays as a medium. A light-receiving element that receives infrared light is mounted on the circuit board of the wireless communication unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2023-181262 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional wireless communication units, a through-hole is provided in a cover covering the circuit board to receive infrared rays. Furthermore, a gap is provided between the support member and the cover so as not to cover the through-hole. These through-holes and gaps can be entry points for foreign objects such as insects and dust. If foreign objects get near the circuit board, it may cause malfunctions. Furthermore, because multiple lighting devices are often installed side by side, there is a possibility that one lighting device may detect a signal intended to control another nearby lighting device, causing the lighting device to malfunction.

[0005] Therefore, an object of the present invention is to provide a lighting device and a lighting fixture that can suppress the intrusion of foreign matter and malfunction with a simple configuration. [Means for solving the problem]

[0006] An illumination device according to one aspect of the present invention comprises a light source unit, a power supply unit that supplies power to the light source unit, a frame having a main board unit, a receiving device having a light receiving unit that receives an optical signal, and a case that houses the receiving device, wherein the main board unit has a first surface on which the light source unit is arranged, a second surface facing away from the first surface and on which the power supply unit and at least a portion of the receiving device are arranged, and an opening provided in a position that overlaps the light receiving unit in a planar view of the first surface, and the illumination device further comprises a blocking piece that blocks the opening from the first surface side, the blocking piece having a translucent portion that overlaps the opening in the planar view and is transparent to the optical signal, and a peripheral portion that is provided around the translucent portion and blocks light of the same wavelength component as the optical signal.

[0007] A lighting fixture according to one aspect of the present invention includes the lighting device according to the above aspect and a fixture body to which the lighting device is attached. [Effects of the Invention]

[0008] According to the present invention, it is possible to provide a lighting device and a lighting fixture that can suppress a decrease in the receiving sensitivity of an optical signal and can improve reliability. [Brief explanation of the drawings]

[0009] [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 partial perspective view showing the vicinity of the wireless module when the cover member is removed from the LED lighting device according to the embodiment. [Figure 12] FIG. 12 is a perspective view of a wireless module according to an embodiment. [Figure 13] FIG. 13 is an exploded perspective view of the wireless module according to the embodiment. [Figure 14] FIG. 14 is an exploded perspective view of the wireless module according to the embodiment. [Figure 15] FIG. 15 is a front view of the wireless module according to the embodiment. [Figure 16] FIG. 16 is a rear view of the wireless module according to the embodiment. [Figure 17] FIG. 17 is a plan view of the wireless module according to the embodiment. [Figure 18] FIG. 18 is a partial plan view showing an end portion of a frame of an LED lighting fixture according to an embodiment. [Figure 19] FIG. 19 is a plan view showing the positional relationship between the wireless module, the frame, and the light source unit according to the embodiment. [Figure 20] FIG. 20 is a perspective view showing a wireless module and a wiring cord according to the embodiment. [Figure 21] FIG. 21 is an exploded perspective view of a modified example of the wireless module according to the embodiment. [Figure 22] FIG. 22 is a perspective view of an insect repellent sheet according to an embodiment. [Figure 23] FIG. 23 is a cross-sectional view of an insect repellent sheet according to an embodiment. [Figure 24]FIG. 24 is a cross-sectional view showing a modified example of the device body according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Below, a lighting device, a lighting fixture, and a wireless module according to embodiments of the present invention will be described in detail with reference to the drawings. Note that each of the embodiments described below represents a specific example of the present invention. Therefore, the numerical values, shapes, materials, components, component arrangements and connection forms, steps, and step sequences 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 not recited in independent claims will be described as optional components.

[0011] Furthermore, each figure is a schematic diagram and is not necessarily an exact illustration. Therefore, for example, the scales of the figures do not necessarily match. Furthermore, in each figure, substantially the same components are given the same reference numerals, and redundant explanations are omitted or simplified.

[0012] 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 axes that are perpendicular to each other and are both perpendicular to the Z-axis. 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. 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%.

[0013] Furthermore, in this specification, ordinal numbers such as "first" and "second" do not refer to the number or order of components unless otherwise specified, but are used for the purpose of avoiding confusion and distinguishing between components of the same type.

[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 (Light Emitting Diode) 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 overlap the bolt insertion holes 2d, the wiring insertion holes 2e (holes through which wiring 102, such as the power line and the dimming signal line drawn from the ceiling, is inserted) and the terminal block provided in the fixture body 2. In particular, in a fixture body 2 having a shallow recess 2a, the components provided on the rear side of the frame 20 should be positioned so as not to overlap the bolt insertion holes 2d, the wiring insertion holes 2e, 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, the components provided on the rear side of the frame 20 should be positioned so as not to overlap the bolt insertion holes 2d, the wiring insertion holes 2e, 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 2e 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 section 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. 2 and 5 to 9, the LED lighting device 3 further includes a wireless module 50. Furthermore, as shown in FIG. 9, the LED lighting device 3 further includes a wiring cord 66 and an insect repellent sheet 80.

[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 28.

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

[0055] As shown in FIGS. 8 and 9 , LEDs 12 are arranged on the substrate 11. Specifically, a plurality of LEDs 12 are arranged on a first surface of the substrate 11. In this embodiment, the plurality of LEDs 12 are mounted in a linear row along the longitudinal direction (Y-axis direction) of the substrate 11 at predetermined intervals. Specifically, the plurality of LEDs 12 are mounted over substantially the entire length of the substrate 11 in the longitudinal direction. Therefore, the plurality of LEDs 12 are mounted along the longitudinal direction of the frame 20 and the cover member 30. Note that the plurality of LEDs 12 may be mounted in multiple rows along the longitudinal direction of the substrate 11, rather than in a single row. The plurality of LEDs 12 emit light when a direct current is supplied from the power supply 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) having an SMD (Surface Mount Device) 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 supports not only the light source unit 10 but also 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, whereby the substrate 11 on which the LEDs 12 are arranged is supported by the frame 20. The frame 20 also supports the wireless module 50. Specifically, the case 70 of the wireless module 50 is fixed to the frame 20 with screws 90 (see FIG. 11 ), whereby the wireless module 50 is supported by the frame 20. As shown in FIG. 9 , the frame 20 is elongated. In this embodiment, the frame 20, like the light source unit 10 and the fixture body 2, is elongated in the Y-axis direction.

[0060] The frame 20 is made of a plate-like member. In this embodiment, the frame 20 contains a metal as a main component. The term "main component" means that one target material (here, a metal) constituting the target object (here, the frame 20) is the material that is contained in the highest content among all materials constituting the target object. The frame 20 can be formed using a metal with high thermal conductivity, and the heat generated by the light source unit 10 can be efficiently dissipated to the outside.

[0061] Specifically, the frame 20 is made of metal and is configured from 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 configuring the frame 20 is, for example, 0.2 mm to 2 mm. In this embodiment, the frame 20 is formed by sheet metal working, so the thickness of the metal plate configuring the frame 20 is preferably 1 mm or less. Specifically, the thickness of the metal plate configuring the frame 20 is set to 0.5 mm. Note that the method for manufacturing the frame 20 is not limited to roll forming and press working, and may also be aluminum extrusion molding, etc.

[0062] 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.

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

[0064] The main board 21 has a first surface 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. The second surface 21b is the surface on which the power supply unit 4 is disposed. 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.

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

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

[0067] The substrate 11 placed on the main plate 21 is fixed to the main plate 21 by engaging with the claws 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] Furthermore, if the depth of the recess 20a of the frame 20 is a [mm] and the width of the recess 20a is w1 [mm], it is preferable that the relationship w1 ≥ 10 × a be satisfied. In other words, the ratio of the depth a of the recess 20a to the width w1 of the recess 20a is 1:10 or 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, it is possible to prevent the light emitted from the LED 12 from being blocked. In this case, if the width of the recess 20a is w1 [mm] and the width of the horizontal plate portion 23 is w2 [mm], it is preferable that the relationship w1 > 2 × w2 be satisfied.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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 thereto. Furthermore, the length of the parallel plate portion 23a in the short-side direction of the frame 20 may be sufficiently short, or it may be a curved plate portion that smoothly curves and connects the tip end of the standing plate portion 22 in the standing direction to the horizontal plate portion 23.

[0084] 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.

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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.

[0105] 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 the gutter-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.

[0106] 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.

[0107] 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.

[0108] 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 .

[0109] 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.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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.).

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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 (curved plate portion).

[0129] 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.

[0130] 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).

[0131] 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.

[0132] 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.

[0133] 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.

[0134] 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.

[0135] 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.

[0136] 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) by two-color molding.

[0137] A spatial region S1 exists between each extension portion 32 and the frame 20. Specifically, the spatial region S1 exists between the inner extension portion 32b of each extension portion 32 and the main plate portion 21 of the frame 20. The spatial region S1 may house the screw base or screw head when various components are screwed together, or may house a crimped portion when the frame 20 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 28 for fixing the power supply unit 4 to the frame 20.

[0138] 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.

[0139] 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.

[0140] 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.

[0141] 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.

[0142] 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.

[0143] 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.

[0144] 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.

[0145] 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.

[0146] 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.

[0147] 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.

[0148] 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.

[0149] 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.

[0150] The cover member 30 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 cover member 30 is made of a translucent resin material. In this case, the cover member 30 can be a milky white cover member with a light diffusing material dispersed therein. Such a cover member 30 can be produced by resin molding a translucent resin material mixed with a light diffusing material into a predetermined shape. Light-reflecting fine particles such as silica particles can be used as the light diffusing material.

[0151] 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.

[0152] 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.

[0153] Furthermore, the thicknesses of the main portion 31, the extension portion 32, and the attachment 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 attachment 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 attachment 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 attachment 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.

[0154] 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 of two colors. For example, the base layer of the extension portion 32 may be made of the same translucent resin material as the main portion 31, and the surface layer of the extension portion 32 (a layer laminated on the base layer) may be made of a white or milky white resin material.

[0155] 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.

[0156] 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.

[0157] 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.

[0158] 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.

[0159] 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.

[0160] 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.

[0161] 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.

[0162] The end caps 40 are made of a light-transmitting resin material such as acrylic or polycarbonate, or a light-transmitting material such as glass. In this embodiment, the end caps 40 are made of a light-transmitting resin material. In this case, the end caps 40 have a light diffusion property. The end cap 40 can be made of a diffusing material with a light-diffusing material dispersed therein. Such an end cap 40 can be produced by molding a translucent resin material mixed with a light-diffusing material into a predetermined shape. The light-diffusing material can be light-reflecting fine particles such as silica particles.

[0163] 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.

[0164] 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.

[0165] 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.

[0166] 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.

[0167] 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.

[0168] 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.

[0169] The main portion 41 is curved in a concave shape as a whole so as to be recessed inward. As an example, the outer surface 41b and the inner surface 41a of the main portion 41 are parabolic. The main part 41 is generally inclined so that the upper part (ceiling side part) is recessed inward more than the lower part (floor side part) in the height direction, which is the Z axis direction, and has an overall curved shape so that the central part is recessed inward more than the peripheral parts in the width direction, which is the X axis direction.

[0170] 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.

[0171] 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.

[0172] 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.

[0173] 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.

[0174] 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 21 of the frame 20. Because the main plate 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 a tilted state in the gap between the ceiling side portion of the end cap 40 (first end cap 40a) and the case 70 of the wireless module 50. Note that in the case of the second end cap 40b, the elastic member 44 is provided in a tilted state in the gap between the ceiling side portion of the second end cap 40b and the main plate 21 of the frame 20. Providing 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 wireless module 50 or the frame 20 (insect-repellent effect). Although the elastic member 44 is provided in this embodiment, it is not necessary to provide the elastic member 44. In this case, it is preferable that the gap between the end cap 40 and the wireless module 50 or the frame 20 is as small as possible.

[0175] 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.

[0176] 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.

[0177] 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.

[0178] 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.

[0179] 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.

[0180] 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.

[0181] 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.

[0182] Examples of construction wires include power lines such as VVF cables and signal lines such as dimming signal lines. Construction wires such as power lines and signal lines are drawn out from the ceiling, for example, and connected to predetermined locations on the LED lighting fixture 1 when the LED lighting fixture 1 is installed. For example, a power line such as a VVF cable is connected to a power terminal block 8, and a dimming signal line is connected to a dimming terminal block (not shown). Examples of internal fixture wires arranged in the spatial region S3 include the internal fixture wires described above.

[0183] 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.

[0184] As an example, FIG. 4 shows an example in which a VVF cable 9a and a signal line 9b are arranged as construction wires in the spatial region S3. In this 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 located, one side in the short direction of the LED lighting device 3 is larger than the other side. In other words, one of the two sides of the power supply unit 4 in the spatial region S3 is a wide area, and the other side of the two sides of the power supply unit 4 in the spatial region S3 is a narrow area. Therefore, it is preferable to arrange the construction wires in the wider of the two areas 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 expanded. Therefore, the construction wires can be arranged by effectively utilizing this expanded spatial region S3. For example, the construction wires can be arranged close to the ceiling end of the spatial region S3 on the fixture body 2 side. In this way, the construction wires can be arranged by effectively utilizing the expanded spatial region S3, which prevents the LED lighting device 3 from being lifted due to interference from the construction wires, thereby preventing a gap from being created between the fixture body 2 and the LED lighting device 3.

[0185] The construction wires may also be arranged in separate wide and narrow areas of the spatial area S3. In this case, the VVF cable 9a, 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 9b, 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.

[0186] 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.

[0187] 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.

[0188] 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.

[0189] 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.

[0190] 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.

[0191] 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.

[0192] 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.

[0193] 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.

[0194] 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.

[0195] 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.

[0196] 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.

[0197] 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.

[0198] Next, the wireless module 50 and the insect repellent sheet 80 will be described in detail using FIGS. 11 to 20 while also referring to FIGS. 1 to 10 as appropriate.

[0199] FIG. 11 is a partial perspective view of the wireless module 50 and its vicinity when the cover member 30 of the LED lighting device 3 is removed. FIG. 12 is a perspective view of the wireless module 50. FIG. 13 is an exploded perspective view of the wireless module 50, viewed from the cover 70b side. FIG. 14 is an exploded perspective view of the wireless module 50, viewed from the case body 70a side. FIGS. 15, 16, and 17 are a front view, a rear view, and a plan view of the wireless module 50, respectively. Note that the "front view" refers to a view viewed from the positive side of the Y axis, and the "rear view" refers to a view viewed from the opposite side of the front view (i.e., the negative side of the Y axis). The "plan view" refers to a view viewed from the positive side of the Z axis, i.e., a view viewed from the floor side when the LED lighting fixture 1 is attached to a ceiling. FIG. 18 is a partial plan view showing the end of the frame 20 of the LED lighting fixture 1. 19 is a plan view showing the positional relationship between the wireless module 50, the frame 20, and the light source unit 10. FIG. 20 is a perspective view showing the wireless module 50 and the wiring cord 66.

[0200] 11, the wireless module 50 is provided at an end in the longitudinal direction of the LED lighting device 3. In this embodiment, the wireless module 50 is provided only at one end in the longitudinal direction of the LED lighting device 3 (negative side of the Y axis), but a wireless module 50 may also be provided at the other end. In other words, the LED lighting fixture 1 according to this embodiment may include multiple wireless modules 50.

[0201] As shown in FIG. 5, the wireless module 50 includes a wireless device 60 that receives a wireless signal, and a case 70 that houses the wireless device 60.

[0202] The wireless device 60 performs at least one of receiving and transmitting wireless signals (wireless communication). The wireless device 60 is configured to receive or transmit wireless signals via radio waves to, for example, a communication device located outside the LED lighting fixture 1. The wireless signals are signals related to the control of the LED lighting device 3. For example, the wireless device 60 can receive a wireless signal indicating the presence of a person from a communication device connected to a human detection sensor. The LED lighting device 3 can be configured to turn on the light source unit 10 when it receives a wireless signal indicating the presence of a person from the human detection sensor. Furthermore, the LED lighting device 3 can be configured to dim or turn off the light source unit 10 when it receives a wireless signal indicating the absence of a person from the human detection sensor. Furthermore, the wireless device 60 can transmit a wireless signal indicating the presence or absence of a malfunction of the LED lighting device 3 to the communication device. For example, the wireless device 60 can transmit a wireless signal indicating the power consumption of the LED lighting device 3 to the communication device.

[0203] In this way, the wireless device 60 has the function of transmitting and receiving wireless signals. The wireless device 60 may be configured to have only the function of transmitting wireless signals. Alternatively, the wireless device 60 may be configured to have only the function of receiving wireless signals.

[0204] The frequency of the radio signal transmitted by the radio device 60 may be, for example, the UHF (Ultra High Frequency) band. The radio device 60 uses, for example, a low-power data communication system in the 2.4 GHz band. The radio device 60 is not limited to a configuration using a low-power data communication system in the 2.4 GHz band, and may also use, for example, a specified low-power radio communication system in the 920 MHz band.

[0205] 5, the wireless device 60 includes a substrate 61, an antenna 62, and an electronic component 63. The wireless device 60 includes a plurality of electronic components 63. For example, as shown in FIGS. 13 and 14, the wireless device 60 includes electronic components 63a, 63b, 63c, and 63d as the plurality of electronic components 63.

[0206] The substrate 61 has a flat plate-like outer shape. The substrate 61 is, for example, a printed wiring board on which metal wiring is formed in a predetermined pattern. The substrate 61 is provided with an antenna 62 and a wireless circuit that processes wireless signals received by the antenna 62 or wireless signals transmitted by the antenna 62.

[0207] As shown in FIGS. 13 to 16, the substrate 61 includes a wide portion 61a and a narrow portion 61b that is narrower than the wide portion 61a. Here, "width" refers to the length in the X-axis direction. The wide portion 61a and the narrow portion 61b each have a substantially rectangular shape in plan view (the shape when viewed from the Y-axis direction). The longitudinal direction of the wide portion 61a and the longitudinal direction of the narrow portion 61b are both in the X-axis direction. The wide portion 61a and the narrow portion 61b share a long side and protrude on both sides of the narrow portion 61b in the longitudinal direction. The wide portion 61a is housed within a main body 71 of the case 70. A large portion of the narrow portion 61b is housed within a protruding portion 72 of the case 70. The shape of the substrate 61 in plan view is not particularly limited and may be, for example, a substantially rectangular shape.

[0208] The antenna 62 is provided on the substrate 61. Providing the antenna 62 on the substrate 61 reduces the number of components and miniaturizes the wireless device 60. In this embodiment, as shown in FIGS. 14 and 16 , the antenna 62 is provided in the narrow portion 61b of the substrate 61. For example, the antenna 62 is formed using metal wiring of a predetermined shape on the substrate 61. Examples of the metal wiring of the predetermined shape include detour wiring in which the metal wiring meanders multiple times. The antenna 62 may be provided on only one surface of the substrate 61 in the thickness direction, or on both surfaces. The antenna 62 is not limited to being formed using the metal wiring of the substrate 61, but may also be formed separately from the substrate 61. When the antenna 62 is formed using the metal wiring of the substrate 61, the component costs of the antenna 62 can be reduced, resulting in a more inexpensive configuration, compared to a structure in which the antenna 62 is formed separately from the substrate 61. Note that when the antenna 62 is formed separately from the substrate 61, the antenna 62 may be appropriately fixed to the narrow portion 61b of the substrate 61.

[0209] The electronic components 63 are circuit components that constitute a wireless circuit that processes wireless signals received by the antenna 62 or wireless signals transmitted by the antenna 62. A plurality of electronic components 63 are electrically connected via metal wiring provided on the substrate 61 to constitute a wireless circuit. For example, the wireless circuit is configured to be capable of at least one of transmitting and receiving radio waves by mounting electronic components 63 such as a crystal oscillator, a microcomputer, and an integrated circuit (IC). The wireless circuit and the antenna 62 are electrically connected via metal wiring (not shown) provided on the substrate 61. The wireless circuit generates at least one of a lighting control signal for controlling the lighting and extinguishing of the light source unit 10, a dimming signal for controlling the dimming of the light source unit 10, and a color adjustment signal for controlling the color adjustment of the light source unit 10, and outputs the generated signal to the power supply unit 4.

[0210] The electronic components 63 may be provided on only one surface of the substrate 61 in the thickness direction, or on both surfaces. In this embodiment, the electronic components 63a, 63b, and 63c are provided on the same surface as the antenna 62, and the electronic component 63d is provided on the surface opposite the antenna 62. All of the electronic components 63 are provided on the wide portion 61a of the substrate 61, but this is not limited thereto. At least one of the electronic components 63 may be provided on the narrow portion 61b. Although only four electronic components 63a to 63d are shown in each drawing, the number of electronic components 63 provided in the wireless device 60 is not limited thereto. Depending on the functionality required for the wireless circuit, the number of electronic components 63 may be one to three, or may be five or more.

[0211] The radio device 60 according to this embodiment is an example of a receiving device that receives an optical signal. Specifically, as shown in Fig. 13, the radio device 60 has a light receiving unit 64 that receives an optical signal.

[0212] The light receiving unit 64 includes a photoelectric conversion element that is sensitive to the wavelength band of the optical signal. The photoelectric conversion element is, for example, a photodiode or a phototransistor. The optical signal is, for example, an infrared signal, and the photoelectric conversion element is sensitive to infrared light. The light receiving unit 64 receives an optical signal (infrared signal) emitted from an external remote controller. Alternatively, the optical signal may be a visible light signal, and the photoelectric conversion element may be sensitive to visible light. The light receiving unit 64 receives the infrared signal, photoelectrically converts the received infrared signal, and outputs the photoelectrically converted electrical signal to the wireless circuit.

[0213] In this embodiment, the wireless circuit has a function of processing the electrical signal received by the light receiving unit 64 and photoelectrically converted. For example, the infrared signal includes a control command related to dimming of the light source unit 10 of the LED lighting device 3. The wireless circuit extracts the control command from the electrical signal after photoelectric conversion and outputs it to the power supply unit 4. Note that the infrared signal may also include a control command related to color adjustment of the light source unit 10. The wireless device 60 may include a signal processing circuit, separate from the wireless circuit, that processes the infrared signal received by the light receiving unit 64.

[0214] As shown in FIG. 13 , the wireless device 60 further includes a connector 65. The connector 65 is a component for connecting a wiring cord 66 (see FIGS. 9 and 20 ) to the wireless device 60. The connector 65 is mounted on the wide portion 61 a of the substrate 61. The connector 65 includes, for example, a metal conductive terminal and a resin case into which one end of the wiring cord 66 is inserted. The conductive terminal is electrically connected to the metal wiring of the substrate 61. A portion of the conductive terminal is exposed inside the resin case and is electrically connected to the wiring cord 66 inserted into the resin case. Note that the specific configuration of the connector 65 is not limited as long as it can electrically and mechanically connect the substrate 61 and the wiring cord 66. For example, the connector 65 may be a conductive pin provided to protrude from the main surface of the substrate 61, or may be inserted into an end of the wiring cord 66.

[0215] The wiring cord 66 is a wire for electrically connecting the wireless device 60 and the power supply unit 4. For example, a shielded wire can be used for the wiring cord 66. The shielded wire has a structure in which a thin conductor wire or metal foil is wrapped around a coated conductor. The shielded wire is configured so that the external conductor wire or metal foil is at ground potential, allowing communication signals to flow through the internal conductor wire.

[0216] The wiring cord 66 functions as a communication line that transmits at least one of the lighting control signal, the dimming signal, and the color adjustment signal processed by the wireless circuit of the wireless device 60 to the power supply unit 4. The wiring cord 66 also functions as a power supply line that supplies power from the power supply unit 4 to operate the wireless device 60.

[0217] The wireless device 60 does not necessarily have to include the light receiving unit 64. The LED lighting device 3 may also include a receiving device that includes the light receiving unit 64 instead of the wireless device 60. In other words, the LED lighting device 3 may have only at least one of a wireless communication function and an optical communication (reception) function.

[0218] The case 70 is a housing that houses the wireless device 60. As shown in Fig. 11 and Fig. 12 , the case 70 has a main body 71 and a protrusion 72. The main body 71 is provided on the second surface 21b side of the main plate 21 of the frame 20. The protrusion 72 protrudes from the main body 71 and is provided on the first surface 21a side of the main plate 21.

[0219] 11 to 13, the case 70 has a plurality of positioning portions 73. Specifically, the case 70 has positioning portions 73a and 73b as the plurality of positioning portions 73. The number of positioning portions 73 may be only one. As shown in FIGS. 12 and 15, the case 70 has two or more wire-passing holes 74. Specifically, the case 70 has wire-passing holes 74a and 74b as the two or more wire-passing holes 74. As shown in FIG. 16, the case 70 has one or more inspection holes 75. Specifically, the case 70 has inspection holes 75a, 75b, and 75c as the one or more inspection holes 75. As shown in FIG. 14, the case 70 has a plurality of inner wall portions 76. Specifically, the case 70 has inner wall portions 76a, 76b, 76c, and 76d as the plurality of inner wall portions 76. 12, 13, and 17, the case 70 is provided with a light-receiving hole 77 and a plurality of screw holes 78. Specifically, the case 70 is provided with screw holes 78a and 78b as the plurality of screw holes 78. As shown in FIGS. 13 and 14, the case 70 has a plurality of locking claws 79. Specifically, the case 70 has locking claws 79a and 79b as the plurality of locking claws 79. Note that at least one of the positioning portion 73, the wire-passing hole 74, the inspection hole 75, the inner wall portion 76, the light-receiving hole 77, the screw hole 78, and the locking claw 79 does not necessarily have to be provided.

[0220] In this embodiment, the case 70 is formed by combining a case body 70a and a lid body 70b. The main body 71 of the case 70 is formed by the case body 70a and a portion of the lid body 70b. The protrusion 72, the positioning portions 73a and 73b, the inner wall portions 76a to 76d, the light receiving hole 77, and the locking claws 79a and 79b are provided on the lid body 70b. The wire passage holes 74a and 74b and the inspection hole 75a are formed by combining the case body 70a and the lid body 70b. The inspection holes 75b and 75c and the screw holes 78a and 78b are provided on the case body 70a.

[0221] The case body 70a is a box body formed in a substantially rectangular parallelepiped shape with one side open. The case body 70a has an elongated shape along the short side direction (X-axis direction) of the main plate portion 21 of the frame 20. Specifically, the case body 70a has outer wall portions 71a, 71b, 71c, and 71d, and a bottom surface portion 71e.

[0222] Both outer wall portions 71a and 71c are provided so as to intersect with the longitudinal direction (Y-axis direction) of main plate portion 21 of frame 20. Outer wall portion 71c is located further outward in the longitudinal direction of main plate portion 21 than outer wall portion 71a. Outer wall portions 71a and 71c have an elongated shape along the short-side direction of main plate portion 21.

[0223] The outer wall 71a is erected along one long side of the bottom surface 71e, which has a generally rectangular shape in plan view. A step extending in the X-axis direction is provided at the connection between the outer wall 71a and the bottom surface 71e. Furthermore, as shown in Figures 13 and 15, the outer wall 71a is provided with slits 74a1 and 74b1.

[0224] The outer wall portion 71c is erected along one long side of the bottom surface portion 71e, which has a substantially rectangular shape in a plan view. An inclined portion extending in the X-axis direction is provided at the connection portion between the outer wall portion 71c and the bottom surface portion 71e. As shown in FIGS. 14 and 16, the inclined portion is provided with inspection holes 75b and 75c. In addition, a slit 75a1 is provided in the outer wall portion 71c.

[0225] Both outer wall portions 71b and 71d are provided so as to be approximately parallel to the longitudinal direction of main plate portion 21 of frame 20. Outer wall portions 71b and 71d are each provided upright along two short sides of bottom surface portion 71e, which has an approximately rectangular shape in a plan view.

[0226] A plurality of inner walls extending from the bottom surface 71e are provided within the case main body 70a. The inner walls may be ribs or bosses, and may be connected to at least one of the outer walls 71a, 71b, 71c, and 71d. The inner walls, such as ribs or bosses, are used to regulate the position of the wireless device 60 housed in the case 70 and / or to regulate the wiring of the wiring cord 66. For example, as shown in FIG. 13, a boss having a screw hole 78a and a boss having a screw hole 78b are provided.

[0227] The lid 70b is a member that closes the opening of the case body 70a. The lid 70b is fitted inside the opening of the case body 70a to close at least a portion of the opening. As shown in Fig. 12, the lid 70b has a top surface 71f and side wall portions 71g and 71h.

[0228] The top surface 71f is the main body of the lid 70b and is the portion that closes the opening of the case body 70a. A protrusion 72 is provided to protrude from the main surface of the top surface 71f. The top surface 71f is disposed within the opening of the case body 70a, and its entirety is disposed within the case body 70a. Specifically, the outer main surface of the top surface 71f (specifically, the main surface on which the protrusion 72 is provided) is substantially flush with the end faces of the outer wall portions 71a, 71b, 71c, and 71d of the case body 70a.

[0229] 17, the shape of top surface 71f in a plan view is formed to avoid two bosses provided with screw holes 78 on case main body 70a. A light receiving hole 77 is provided so as to penetrate top surface 71f. When top surface 71f is viewed in a plan view (when viewed in the Z-axis direction), light receiving hole 77 is provided at a position overlapping light receiving unit 64 of wireless device 60.

[0230] Both side wall portions 71g and 71h are provided so as to intersect with the longitudinal direction (Y-axis direction) of main plate portion 21 of frame 20. Side wall portion 71h is located further outward in the longitudinal direction of main plate portion 21 than side wall portion 71g. Side wall portions 71g and 71h have an elongated shape along the short side direction of main plate portion 21.

[0231] The side wall 71g is erected along one long side of the top surface 71f, which has a generally rectangular shape in a plan view. The side wall 71g is configured to come into contact with the inner surface of the outer wall 71a of the case body 70a when the case body 70a and the lid 70b are combined. The side wall 71g is provided with slits 74a2 and 74b2 and protrusions 74a3 and 74b3.

[0232] The side wall 71h is erected along one long side of the top surface 71f, which has a generally rectangular shape in a plan view. The side wall 71h is configured to come into contact with the inner surface of the outer wall 71c of the case body 70a when the case body 70a and the lid 70b are combined. The side wall 71h is provided with a protrusion 75a3.

[0233] The case 70 is formed using a material that transmits radio waves. Examples of materials that can be used for the case 70 include synthetic resins such as polycarbonate resin, epoxy resin, polyester resin, and polyimide resin. The synthetic resin that constitutes the case 70 can contain a light diffusing material. The case body 70a and the lid body 70b are formed using the same material, but they may also be formed using different materials. In this case, only the lid body 70b may be formed using a material that transmits radio waves, while the case body 70a is formed using a material that does not transmit radio waves. Furthermore, the lid body 70b may be formed using a material that is transparent to the optical signal received by the light receiving unit 64. In this case, the light receiving hole 77 does not need to be provided in the lid body 70b.

[0234] The case body 70a and the lid body 70b are each formed into a predetermined shape by injection molding or the like. For example, the outer wall portions 71a-71d and bottom portion 71e that constitute the case body 70a, as well as the inner wall portions such as ribs and bosses within the case body 70a, are integrally formed by injection molding. Furthermore, the protrusion portion 72, positioning portion 73, top surface portion 71f, side wall portions 71g and 71h, inner wall portion 76, and locking claw 79 that constitute the lid body 70b are integrally formed by injection molding. However, they do not necessarily have to be integrally formed; for example, the protrusion portion 72 and the positioning portion 73 may be formed from separate members.

[0235] The protruding portion 72 of the case 70 is hollow inside, and a part of the board 61 of the wireless device 60 is disposed therein. Specifically, the narrow portion 61b of the board 61 is disposed within the protruding portion 72. The antenna 62 is provided in the narrow portion 61b, and therefore the antenna 62 is disposed within the protruding portion 72.

[0236] 11, the protrusion 72 protrudes from the main body 71 toward the first surface 21a of the main board 21 of the frame 20. In other words, when the LED lighting device 3 is attached to the fixture main body 2 fixed to a ceiling, the protrusion 72 and the antenna 62 are located closer to the floor than the first surface 21a of the main board 21. Because the antenna 62 is located closer to the floor than the first surface 21a of the main board 21 of the frame 20, radio waves to the antenna 62 are less likely to be blocked by the frame 20. This makes it possible to suppress a decrease in the wireless communication performance of the wireless device 60. For example, the range (communication distance) over which the wireless device 60 can communicate can be increased.

[0237] The cover member 30 is provided to cover the protrusion 72, and is made of a translucent resin or the like, allowing radio waves to pass through the cover member 30. This ensures sufficient wireless communication performance of the wireless device 60 using the antenna 62. For example, the antenna 62 can receive wireless signals transmitted by a communication device placed indoors or a communication terminal owned by the user.

[0238] 19, in this embodiment, the protrusion 72 is disposed within an opening 25 provided in the main plate 21 of the frame 20. The antenna 62 disposed within the protrusion 72 is disposed outside the end 13 of the light source unit 10 in the longitudinal direction (Y-axis direction) of the main plate 21. By disposing a part of the case 70 (specifically, the protrusion 72) in the opening 25, it is possible to prevent the LED lighting device 3 from becoming large in size in the longitudinal direction.

[0239] As shown in FIGS. 18 and 19 , the opening 25 is a notch-shaped opening provided at an end of the main plate 21 in the longitudinal direction. The opening 25 has a substantially rectangular shape in a plan view. The opening 25 is a space surrounded by an opening inner wall 25a that is perpendicular to the longitudinal direction of the main plate 21 and opening inner walls 25b and 25c that are parallel to the longitudinal direction of the main plate 21. The opening inner wall 25a is an example of a wall surface of the opening 25. The distance between the opening inner wall 25b and the opening inner wall 25c is longer than the width W (length in the short direction) of the substrate 11 of the light source unit 10. Furthermore, the distance between the opening inner wall 25b and the opening inner wall 25c is longer than the width (length in the Y-axis direction) of the protrusion 72 and shorter than the width (length in the Y-axis direction) of the main body 71.

[0240] The protrusion 72 protrudes from the first surface 21a of the main board 21 so as to be higher than the LEDs 12 of the light source unit 10. Therefore, the protrusion 72 may block light from the LEDs 12, thereby reducing the light distribution of the light source unit 10. In contrast, in this embodiment, the protrusion 72 (wireless module 50) is provided at the end of the main board 21 of the frame 20 in the longitudinal direction. This reduces the amount of light blocked by the protrusion 72, thereby preventing a reduction in light distribution. Furthermore, the tip of the protrusion 72 in the protruding direction (positive direction of the Z axis) is a smoothly curved convex surface. This allows the light from the LEDs 12 to be scattered, preventing linear shadows from being formed.

[0241] 15 and 16, when viewed from a direction perpendicular to the protruding direction of the protruding portion 72 (along the Y-axis direction), the narrow portion 61b of the substrate 61 of the wireless device 60 and the curved surface of the tip portion of the protruding portion 72 partially overlap. In other words, by bringing the narrow portion 61b of the substrate 61 of the wireless device 60 and the inner surface of the protruding portion 72 as close as possible inside the protruding portion 72, the protruding amount of the protruding portion 72 (the height from the first surface 21a) can be reduced. This further reduces the amount of light blocked by the protruding portion 72, thereby improving the light distribution.

[0242] 11, 12, and 15, case 70 according to the present embodiment has positioning portions 73. Positioning portions 73 position wireless device 60 housed in case 70. Specifically, positioning portions 73 position wireless device 60 so that an end of main plate portion 21 of frame 20 in the longitudinal direction is spaced a predetermined distance from wireless device 60 in the longitudinal direction. Positioning portions 73 are protrusions provided so as to come into contact with protruding portions 72 and top surface portion 71f.

[0243] As shown in FIG. 19 , the positioning portion 73 abuts against the opening inner wall 25a of the opening 25 provided in the main plate portion 21. The positioning portion 73 abutting against the opening inner wall 25a prevents the protrusion 72 from contacting the opening inner wall 25a. This allows the distance between the antenna 62 disposed within the protrusion 72 and the opening inner wall 25a to be maintained at a predetermined distance or greater. For example, in a plan view of the first surface 21a, the distance between the protrusion 72 and the opening inner wall 25a is 0.5 mm or greater and 1.5 mm or less. Furthermore, in a plan view of the first surface 21a, the distance between the substrate 61 on which the antenna 62 is provided and the opening inner wall 25a is in a range of 1.5 mm or greater and 2.5 mm or less.

[0244] In this way, by making the distance between the substrate 61 and the opening inner wall 25a a predetermined distance or more, it is possible to ensure that the distance between the metal frame 20 (main board portion 21) and the antenna 62 is a predetermined distance or more. This makes it possible to prevent the metal frame 20 from affecting the wireless communication performance of the antenna 62. In other words, it is possible to improve the wireless communication performance of the wireless device 60. For example, it is possible to widen the range (communication distance) over which communication is possible using the wireless device 60.

[0245] Note that by arranging the wireless device 60 (antenna 62) far away from the frame 20, it is possible to suppress a decrease in wireless communication performance due to the frame 20. However, in this case, an increase in the longitudinal size of the LED lighting device 3 (LED lighting fixture 1) is unavoidable. According to the LED lighting device 3 of this embodiment, by positioning the wireless device 60 (antenna 62) using the positioning unit 73, it is possible to improve wireless communication performance while suppressing an increase in the size of the LED lighting device 3. The distance between the wireless device 60 and the end of the frame 20 (the opening inner wall 25a) determined by the positioning unit 73 may be determined according to the radiation characteristics (reception characteristics) of radio waves from the antenna 62.

[0246] In this embodiment, the positioning portion 73 is positioned by contacting the frame 20 with the opening inner wall 25a, but is not in contact with the light source unit 10. In a plan view of the first surface 21a of the main board portion 21 of the frame 20, the end portion 13 in the longitudinal direction of the light source unit 10 (substrate 11) does not overlap the opening 25 and is set back from the opening inner wall 25a. The distance between the end portion 13 and the opening inner wall 25a in a plan view is, for example, a gap of 0.1 mm to 1.5 mm. This makes it possible to avoid contact between the substrate 11 and the positioning portion 73, even if the positioning portion 73 is provided at a position facing the end portion 13 of the substrate 11.

[0247] The case 70 has positioning portions 73a and 73b as the multiple positioning portions 73. Both positioning portions 73a and 73b are provided on the protruding portion 72. The protruding heights (lengths in the Y-axis direction) of the positioning portions 73a and 73b from the protruding portion 72 are equal to each other, for example, 0.5 mm to 1.5 mm, for example, 1 mm. The positioning portions 73a and 73b are arranged side by side along the short-side direction (X-axis direction) of the main plate portion 21 of the frame 20. This allows the distance between the protruding portion 72 and the opening inner wall 25a to be maintained at two locations, thereby improving positioning accuracy. The number of positioning portions 73 may be three or more, and increasing the number can further improve positioning accuracy.

[0248] 18 and 19, the arrangement distance between the positioning portions 73a and 73b is longer than the length of the light source unit 10 in the short-side direction. Neither of the positioning portions 73a nor 73b is provided at a position that does not face the end portion 13 of the light source unit 10 in the longitudinal direction. For example, even if the substrate 11 is translated in its longitudinal direction (Y-axis direction), the substrate 11 does not come into contact with either of the positioning portions 73a or 73b. This prevents the substrate 11 from coming into contact with the positioning portions 73a and 73b even if the substrate 11 expands and stretches in the Y-axis direction due to heat generated when the LEDs 12 emit light. Since force is prevented from coming into contact with the substrate 11 and the positioning portions 73a and 73b and being applied, damage to the substrate 11 or the positioning portions 73a and 73b (case 70) can be prevented.

[0249] Furthermore, the end 13 of the light source unit 10 does not have to be recessed from the opening inner wall 25a in a plan view of the first surface 21a. For example, the end 13 of the light source unit 10 may coincide with the opening inner wall 25a or may overlap the opening 25 in a plan view of the first surface 21a. For example, the width of the opening 25 (length in the X-axis direction) may change so as to decrease in stages toward the positive direction of the Y-axis. For example, the opening 25 may have a width that changes in two stages, and in a plan view of the first surface 21a, the opening 25 may have a wide opening where the protrusion 72 of the case 70 is disposed and a narrow opening that is narrower than the wide opening. In this case, the end 13 of the substrate 11 may overlap the narrow opening in a plan view. By making the arrangement distance between the positioning portion 73a and the positioning portion 73b longer than the width W of the substrate 11, it is possible to prevent the substrate 11 from contacting the protrusion 72 and the positioning portions 73a and 73b. The width of the narrow opening may be the same as the width W of the substrate 11, or may be shorter than the width W. The width of the narrow opening may be longer than the width W, as long as it is shorter than the spacing between the positioning portions 73a and 73b.

[0250] 12 and 15, the case 70 according to this embodiment is provided with two or more wire passage holes 74. The wire passage holes 74 are holes for inserting the wire cord 66 and are provided so as to penetrate the outer wall portion of the case 70. In this embodiment, the case 70 is provided with wire passage holes 74a and 74b as the two or more wire passage holes 74. The wire passage holes 74a and 74b are provided in the same outer wall portion 71a among the multiple outer wall portions 71a to 71d of the case 70. This allows the route of the wire cord 66 outside the case 70 to be approximately the same regardless of whether the wire passage hole 74a or 74b is used, making it easy to handle the wiring outside the case 70.

[0251] The wire passage holes 74a and 74b have the same shape and size. For example, the wire passage holes 74a and 74b are arranged in a line-symmetric relationship with respect to an imaginary line that passes through the longitudinal center of the outer wall portion 71a of the case body 70a and is perpendicular to the Z-axis direction. The wire passage hole 74a is formed by combining a slit 74a1 provided in the case body 70a with a slit 74a2 provided in the lid body 70b. The wire passage hole 74b is formed by combining a slit 74b1 provided in the case body 70a with a slit 74b2 provided in the lid body 70b.

[0252] The slits 74a1 and 74b1 have a notch shape that extends from the tip of the outer wall 71a of the case body 70a in the vertical direction (positive direction of the Z axis) toward the bottom surface 71e. The slits 74a1 and 74b1 have the same shape and size. For example, the slits 74a1 and 74b1 are arranged in line symmetry with respect to an imaginary line that passes through the longitudinal center of the outer wall 71a and is perpendicular to the Z axis direction.

[0253] The slits 74a2 and 74b2 have a notch shape that extends from the tip of the side wall 71g of the lid 70b in the vertical direction (negative Z-axis direction) toward the top surface 71f. The slits 74a2 and 74b2 have the same shape and size. For example, the slits 74a2 and 74b2 are arranged in a line-symmetric relationship with respect to an imaginary line that passes through the longitudinal center of the side wall 71g and is perpendicular to the Z-axis direction. The slits 74a2 and 74b2 are arranged at positions corresponding to the slits 74a1 and 74b1 in the case body 70a, respectively. Specifically, when the case body 70a and the lid 70b are assembled, the slits 74a1 and 74a2 overlap to form the wire passage hole 74a, and the slits 74b1 and 74b2 overlap to form the wire passage hole 74b.

[0254] Furthermore, protrusions 74a3 and 74b3 are provided on the side wall 71g of the lid 70b of the present embodiment. The protrusions 74a3 and 74b3 are provided to reduce the steps caused by the slits 74a1 and 74a2 of the case body 70a, respectively.

[0255] Specifically, the protrusion 74a3 is provided so as to fill a portion of the slit 74a1. Specifically, the shape and size of the protrusion 74a3 are the same as the shape and size of the starting end of the notch of the slit 74a1. When the case body 70a and the lid 70b are combined, the outer surface of the protrusion 74a3 is substantially flush with the outer surface of the outer wall 71a of the case body 70a. Furthermore, the protrusion 74a3 is part of the top surface 71f, and the outer surface of the top surface 71f and the outer surface of the protrusion 74a3 are also flush with each other. As a result, the end surface of the outer wall 71a and the outer surface of the top surface 71f (and the protrusion 74a3) are also substantially flush with each other.

[0256] Similarly, the protrusion 74b3 is provided so as to fill a portion of the slit 74b1. Specifically, the shape and size of the protrusion 74b3 are the same as the shape and size of the starting end of the notch of the slit 74b1. When the case body 70a and the lid 70b are combined, the outer surface of the protrusion 74b3 is substantially flush with the outer surface of the outer wall 71a of the case body 70a. Furthermore, the protrusion 74b3 is part of the top surface 71f, and the outer surface of the top surface 71f and the outer surface of the protrusion 74b3 are also flush with each other. As a result, the end surface of the outer wall 71a and the outer surface of the top surface 71f (and the protrusion 74b3) are also substantially flush with each other.

[0257] In this embodiment, a wiring cord 66 is inserted into one of the wire-passing holes 74a and 74b. For example, as shown in FIG. 20 , the wiring cord 66 is inserted into the wire-passing hole 74a, and nothing is inserted into the wire-passing hole 74b. The LED lighting device 3 according to this embodiment includes a blocking piece 67 that blocks the wire-passing hole 74b. For example, the blocking piece 67 has an adhesive surface, so that it can be fixed to the outer wall 71a of the case main body 70a so as to cover the wire-passing hole 74b. Blocking the wire-passing hole 74b with the blocking piece 67 can prevent foreign matter such as insects and dust from entering the case 70. This can prevent malfunctions in the wireless device 60 and improve reliability.

[0258] Since the protrusion 74b3 fills a portion of the slit 74b1, the outer surface of the protrusion 74b3 and the outer surface of the outer wall portion 71a become substantially flush with each other. Since the space between the blocking piece 67 and the case 70 is reduced, the adhesion between the blocking piece 67 and the case 70 can be improved. Since the blocking piece 67 is less likely to peel off, the effect of suppressing the intrusion of foreign matter can be improved, and reliability can be further improved. The blocking piece 67 can be formed using resin, metal, or the like, and the material is not particularly limited.

[0259] The blocking piece 67 may be provided with information about the wireless module 50. The blocking piece 67 may be a so-called product number label. For example, the blocking piece 67 may be provided with information such as the product number of the wireless module 50, communication performance, and the frequency band of the radio waves to be used. This information may be printed in text such as alphanumeric characters, or may be coded as a two-dimensional code such as a QR code (registered trademark) or a barcode.

[0260] While the example shown here shows the case where the wire cord 66 is inserted into the wire hole 74a, the same applies when the wire cord 66 is inserted into the wire hole 74b. When inserting the wire cord 66 into the wire hole 74b, the blocking piece 67 is attached so as to block the wire hole 74a. In this case, too, the protrusion 74a3 fills a part of the slit 74a1, so that the outer surface of the protrusion 74a3 and the outer surface of the outer wall portion 71a become substantially flush with each other. Since the space between the blocking piece 67 and the case 70 is reduced, the adhesion between the blocking piece 67 and the case 70 can be improved. Since the blocking piece 67 is less likely to peel off, the effect of suppressing the intrusion of foreign matter is improved, further improving reliability.

[0261] 14, the case 70 has a plurality of inner walls 76. Each of the plurality of inner walls 76 is used to regulate the position of the wireless device 60 housed in the case 70 and / or to regulate the routing of the wiring cord 66. For example, the wiring cord 66 is anchored to at least one of the plurality of inner walls 76. In the present embodiment, the case 70 has the plurality of inner walls 76, which are inner walls 76a, 76b, 76c, and 76d.

[0262] The inner walls 76a, 76b, 76c, and 76d are each disposed to face the side wall 71g. The inner wall 76a is provided with a slit 76a2, and the inner wall 76b is provided with a slit 76b2. The slit 74a2 provided in the side wall 71g, the slit 76a2 provided in the inner wall 76a, and the inner wall 76c are aligned in this order along the Y-axis direction. The slit 74b2 provided in the side wall 71g, the slit 76b2 provided in the inner wall 76b, and the inner wall 76d are aligned in this order along the Y-axis direction. The slits 76a2 and 76b2 are provided to allow the wiring cord 66 to pass through.

[0263] In this embodiment, the wire cord 66 is inserted through one wire hole selected from one or more wire holes 74 other than the wire hole 74 closest to the connector 65, among the multiple wire holes 74 provided in the case 70. Specifically, as shown in FIG. 13, of the two wire holes 74a and 74b, the wire hole closest to the connector 65 is wire hole 74b. Therefore, as shown in FIG. 20, the wire cord 66 is inserted through wire hole 74a.

[0264] When the wire cord 66 is inserted through the wire passage hole 74a, the wire cord 66 starts from the connector 65, passes through the gap between the inner wall portions 76d and 76b, and then passes through the slit 76a2 in the inner wall portion 76a and the wire passage hole 74a (slits 74a2 and 74a1) in that order. Thus, the wiring path of the wire cord 66 within the case 70 is not linear but can be bent by the inner walls 76d, 76b, and 76a. Even if tension is applied to the wire cord 66, the force is dispersed by the inner walls 76d, 76b, and 76a, making it difficult for a strong force to be applied to the connector 65. In other words, the inner walls 76d, 76b, and 76a function as tension stoppers for the wire cord 66. This prevents the wire cord 66 from coming off the connector 65 and prevents damage to the connector 65, thereby improving the reliability of the LED lighting device 3. The wiring path of the wiring cord 66 inside the case 70 is not limited to the above example. For example, the wiring cord 66 may start from the connector 65 and pass through the slit 76a2 provided in the inner wall 76a, instead of passing through the gap between the inner wall 76d and the inner wall 76b.

[0265] Furthermore, the case 70 is provided with a plurality of wire holes 74a and 74b, which allows wireless devices with different configurations to be housed therein. Fig. 21 is an exploded perspective view of a modified example of the wireless module 50A according to the embodiment.

[0266] 13 in that a wireless module 50A shown in Fig. 21 includes a wireless device 60A instead of the wireless device 60. The case 70 of the wireless module 50A is the same as the case 70 of the wireless module 50.

[0267] The wireless device 60A has a substrate 61A, an antenna 62, electronic components 63, a light receiving unit 64, and a connector 65. The substrate 61A corresponds to the substrate 61 included in the wireless device 60, but has a different shape. The antenna 62, electronic components 63, light receiving unit 64, and connector 65 included in the wireless device 60A are all substantially the same as the antenna 62, electronic components 63, light receiving unit 64, and connector 65 included in the wireless device 60, but their arrangements are different. For example, the wireless devices 60 and 60A process different frequencies of wireless signals (radio waves). The difference in the frequencies of the wireless signals may result in different arrangements of the components.

[0268] In the example shown in FIG. 21 , the connector 65 is disposed near the wire-through hole 74a (slits 74a1 and 74a2). That is, the wire-through hole closest to the connector 65 is the wire-through hole 74a, not the wire-through hole 74b. Therefore, in the case of the wireless module 50A, the wiring cord 66 is inserted through the wire-through hole 74b. Specifically, starting from the connector 65, the wiring cord 66 passes through the gap between the inner wall portion 76c and the inner wall portion 76a, and then passes through the slit 76b2 provided in the inner wall portion 76b and the wire-through hole 74b (slits 74b2 and 74b1), in that order. In this way, the wiring path of the wiring cord 66 within the case 70 is not linear, but can be bent by the inner walls 76c, 76a, and 76b. As a result, even if tension is applied to the wiring cord 66, the force is dispersed by the inner walls 76c, 76a, and 76b, making it difficult for a strong force to be applied to the connector 65. That is, the inner walls 76c, 76a, and 76b function as tension stoppers for the wiring cord 66. This makes it possible to prevent the wiring cord 66 from coming off the connector 65 and to prevent damage to the connector 65, thereby improving the reliability of the LED lighting device 3.

[0269] In this way, since the case 70 is provided with two or more wire-through holes 74, it is possible to select and use the wire-through hole 74 suitable for wiring the wiring cord 66, for example, depending on the position of the connector 65 of the board 61 or 61A housed in the case 70. In other words, not only the board 61 shown in FIG. 13 etc. but also the board 61A shown in FIG. 21 can be used as the board housed in the case 70. In other words, the case 70 can be adapted to two types of boards 61 and 61A, and is therefore highly versatile. In this way, an LED lighting device 3 equipped with a highly versatile case 70 can be realized.

[0270] 16, case 70 is provided with one or more inspection holes 75. Inspection holes 75 are through holes for inserting probe pins used for electrical inspection of wireless device 60. In this embodiment, case 70 is provided with inspection holes 75a, 75b, and 75c as the one or more inspection holes 75. Inspection holes 75a, 75b, and 75c are all formed so that board 61 of wireless device 60 is visible from outside case 70 when viewed from above. Inspection pads are provided on board 61, and inspection holes 75a, 75b, and 75c are provided at positions that overlap the pads when viewed from the negative side of the Y axis.

[0271] The inspection hole 75a is formed by blocking a portion of a slit 75a1 provided in the case body 70a with a side wall portion 71h of the lid body 70b. The slit 75a1 has a notch shape that is cut out from the tip of the outer wall portion 71c in the vertical direction (positive direction of the Z axis) toward the bottom surface portion 71e. The height of the side wall portion 71h (i.e., its length in the vertical direction) is shorter than the slit 75a1 provided in the outer wall portion 71c. Therefore, when the case body 70a and the lid body 70b are combined, as shown in FIG. 16, a portion of the slit 75a1 does not overlap with the side wall portion 71h, forming the inspection hole 75a.

[0272] Furthermore, a protrusion 75a3 is provided on the side wall 71h. The protrusion 75a3 is provided so as to fill a portion of the slit 75a1. Specifically, the shape and size of the protrusion 75a3 are the same as the shape and size of the starting end of the notch of the slit 75a1. When the case body 70a and the lid 70b are combined, the outer surface of the protrusion 75a3 is substantially flush with the outer surface of the outer wall 71c of the case body 70a. The protrusion 75a3 is also part of the top surface 71f, and the outer surface of the top surface 71f and the outer surface of the protrusion 75a3 are therefore substantially flush with each other. As a result, the end surface of the outer wall 71c and the outer surface of the top surface 71f (and the protrusion 75a3) are also substantially flush with each other.

[0273] In this embodiment, a blocking piece 75d shown in FIGS. 13 and 14 is provided. The blocking piece 75d is a member that blocks the inspection holes 75a, 75b, and 75c. The blocking piece 75d includes a first plate portion 75d1 that covers the outer wall portion 71c of the case body 70a, a second plate portion 75d2 that covers the bottom surface 71e of the case body 70a, and a third plate portion 75d3 that connects the first plate portion 75d1 and the second plate portion 75d2. The first plate portion 75d1 and the second plate portion 75d2 are approximately perpendicular to each other, and the third plate portion 75d3 is inclined with respect to each of the first plate portion 75d1 and the second plate portion 75d2. The third plate portion 75d3 covers an inclined portion provided at the connection portion between the outer wall portion 71c and the bottom surface 71e of the case body 70a.

[0274] For example, because blocking piece 75d has an adhesive surface, it can be fixed to outer wall portion 71c and bottom surface portion 71e of case body 70a so as to cover inspection hole 75a. By blocking inspection holes 75a, 75b, and 75c with blocking piece 75d, it is possible to prevent foreign matter such as insects and dust from entering case 70. This makes it possible to prevent malfunctions in wireless device 60 and improve reliability. Note that blocking piece 75d can be made of resin, metal, or the like, and the material is not particularly limited.

[0275] The blocking piece 75d may be provided with information about the wireless module 50. The blocking piece 75d may be a so-called product number label. For example, the blocking piece 75d may be provided with information such as the product number of the wireless module 50, communication performance, and the frequency band of the radio waves to be used. This information may be printed in text such as alphanumeric characters, or may be coded as a two-dimensional code such as a QR code (registered trademark) or a barcode.

[0276] 12, 13, and 17, a light receiving hole 77 is provided in the cover 70b of the case 70. The light receiving hole 77 is a through-hole for passing an optical signal. The light receiving hole 77 penetrates the top surface 71f of the cover 70b. When the top surface 71f is viewed from above, the light receiving hole 77 and the light receiving unit 64 of the wireless device 60 overlap. This allows the light receiving unit 64 to efficiently receive the optical signal (infrared signal) passing through the light receiving hole 77.

[0277] 18 and 19, the main plate 21 of the frame 20 is provided with a light-receiving opening 26 at a position overlapping the light-receiving portion 64 in a plan view of the first surface 21a of the main plate 21. The light-receiving opening 26 is provided integrally with the opening 25. Specifically, the light-receiving opening 26 has a shape formed by cutting out a circle from the connection portion between the opening inner wall 25a and the opening inner wall 25c. The shape of the light-receiving opening 26 in a plan view is not limited to a circle and may be a rectangle, an ellipse, or the like. In a plan view of the first surface 21a of the main plate 21, the light-receiving opening 26, the light-receiving hole 77 of the case 70, and the light-receiving portion 64 overlap with each other.

[0278] 19, an insect repellent sheet 80 is provided to cover the light-receiving opening 26. The insect repellent sheet 80 is an example of a blocking piece that covers the light-receiving opening 26 from the first surface 21a side. The insect repellent sheet 80 covers the entire light-receiving opening 26, thereby preventing the entry of foreign matter such as insects and dust. Details of the insect repellent sheet 80 will be described later.

[0279] 12, 13, and 17, screw holes 78 are formed in the case body 70a of the case 70. Screws 90 are inserted into the screw holes 78 to fix the case 70 to the main plate portion 21 of the frame 20. In this embodiment, a plurality of screw holes 78 are formed in the case body 70a. The plurality of screw holes 78 include screw holes 78a and 78b. The screw holes 78a and 78b may be through holes that pass through the case body 70a, or may be recesses that do not pass through.

[0280] 18 , the main plate 21 of the frame 20 is provided with a plurality of screw holes 27 penetrating the main plate 21. Specifically, the plurality of screw holes 27 include three screw holes 27a, 27b, and 27c. When the wireless module 50 is positioned so that the positioning portion 73 of the case 70 abuts against the opening inner wall 25a, the screw hole 27a overlaps with the screw hole 78a of the case 70, and the screw hole 27b overlaps with the screw hole 78b of the case 70. The wireless module 50 (case 70) can be attached to the frame 20 by inserting the screw 90a into the screw hole 27a and then the screw hole 78a, and then inserting and tightening the screw 90b into the screw hole 27b and then the screw hole 78b.

[0281] Note that the screw holes 27c are not used. The screw holes 27c can be used depending on the configuration of the case 70 of the wireless module 50. In other words, the frame 20 is configured to allow attachment of a plurality of cases 70 with different configurations. This increases the versatility of the frame 20.

[0282] 14, the case 70 is provided with locking claws 79. The locking claws 79 are provided on one of the case body 70a and the lid body 70b, and are engaged with a part of the other, thereby combining the case body 70a and the lid body 70b. In this embodiment, a plurality of locking claws 79 are provided on the lid body 70b. The plurality of locking claws 79 include locking claws 79a and 79b.

[0283] The wireless module 50 can be attached to the frame 20, for example, as follows: First, the wiring cord 66 is connected to the connector 65 of the wireless device 60. Next, the narrow portion 61b of the circuit board 61 of the wireless device 60 is inserted into the protruding portion 72. At this time, the wiring cord 66 is inserted into one of the slits 74a2 and 74b2. For example, the wiring cord 66 is inserted into the slit 74a2 farthest from the connector 65. More specifically, the wiring cord 66 starts from the connector 65, passes through the gap between the inner wall portion 76d and the inner wall portion 76b, and then passes through the slit 76a2 in the inner wall portion 76a and the slit 74a2 in the side wall portion 71g, in that order. By routing the wiring cord 66 in this manner, misalignment of the wiring cord 66 can be prevented, improving the workability of assembling the lid body 70b and the case body 70a in the next step.

[0284] Next, the wireless device 60 and the lid 70b are mated and inserted into the case body 70a. Specifically, the wide portion 61a of the circuit board 61 of the wireless device 60 is inserted into a predetermined position in the case body 70a, and the wiring cord 66 is inserted into the slit 74a1. By pushing the lid 70b into the case body 70a, the locking claws 79a and 79b on the lid 70b are each locked onto the inner wall of the case body 70a. This allows the lid 70b and the case body 70a to be combined.

[0285] At this time, the protrusions 74a3 and 74b3 of the lid body 70b are inserted into the slits 74a1 and 74b1 of the case body 70a, respectively. This forms the wire-passing holes 74a and 74b. The wiring cord 66 is inserted into the wire-passing hole 74a, and nothing is inserted into the wire-passing hole 74b. In this embodiment, as shown in FIG. 20, a blocking piece 67 is attached to block the wire-passing hole 74b. Furthermore, the protrusion 75a3 of the lid body 70b is inserted into the slit 75a1 of the case body 70a. This forms the inspection hole 75a. In this embodiment, a blocking piece 75d is attached to block the inspection holes 75a, 75b, and 75c. Before attaching the blocking piece 75d, the operation of the wireless device 60 may be checked using the inspection holes 75a, 75b, and 75c.

[0286] As described above, by combining the case body 70a and the lid 70b, the wireless device 60 can be housed inside the case 70, and the wiring cord 66 connected to the wireless device 60 can be pulled out from inside the case 70 to the outside. The wireless module 50A shown in Fig. 21 can be assembled in the same manner. The wireless module 50 or 50A assembled in this manner is fixed to the main plate 21 of the frame 20.

[0287] Specifically, the case body 70a of the case 70 is placed on the second surface 21b side of the main plate 21 of the frame 20, and the protrusion 72 is inserted into the opening 25 provided at the end of the main plate 21. Then, the positioning portion 73 provided on the protrusion 72 is brought into contact with the inner wall 25a of the opening. As a result, the screw holes 78a and 78b of the case 70 are aligned with the screw holes 27a and 27b, respectively. The wireless module 50 or 50A (case 70) can be attached to the frame 20 by inserting the screw 90a into the screw hole 27a and then the screw hole 78a, and then inserting the screw 90b into the screw hole 27b and then the screw hole 78b and tightening them.

[0288] After the wireless module 50 or 50A is attached to the frame 20, the insect repellent sheet 80 is attached so as to cover the light-receiving opening 26. This makes it possible to prevent foreign matter such as insects and dust from entering the second surface 21b of the frame 20 through the light-receiving opening 26 and into the inside of the case 70 through the light-receiving hole 77.

[0289] Next, the structure of the insect repellent sheet 80 will be described with reference to Figures 22 and 23. Figure 22 is a perspective view of the insect repellent sheet 80 according to this embodiment. Figure 23 is a cross-sectional view of the insect repellent sheet 80 according to this embodiment. Specifically, Figure 23 shows a cross-section taken along line XXIII-XXIII in Figure 22.

[0290] The insect repellent sheet 80 has a light-transmitting portion 81 and a peripheral portion 82 provided around the light-transmitting portion 81. The light-transmitting portion 81 is transparent to the optical signal received by the light-receiving portion 64, and as shown in FIG. 19 , overlaps the light-receiving opening 26 in a plan view. The peripheral portion 82 is provided around the light-transmitting portion 81, and at least a portion of the peripheral portion 82 overlaps the first surface 21a of the main plate portion 21 in a plan view. The peripheral portion 82 blocks light of the same wavelength component as the optical signal received by the light-receiving portion 64. Note that blocking does not only mean completely suppressing the transmission of incident light, but also means suppressing at least a portion of the transmission of incident light.

[0291] In this embodiment, the peripheral portion 82 has a lower transmittance for optical signals than the transparent portion 81. This allows the peripheral portion 82 to suppress optical signals that are incident at angles outside a predetermined range. Here, the angle of incidence of light that is perpendicular to the first surface 21a is considered to be 0°. For example, if multiple LED lighting fixtures 1 are installed on a ceiling, an optical signal sent to the LED lighting fixture 1 that a user wants to control may be received by the light-receiving unit 64 of another LED lighting fixture 1, causing malfunction. By providing the peripheral portion 82, optical signals that attempt to enter the light-receiving unit 64 at a large angle of incidence in the other LED lighting fixtures 1 can be attenuated. This prevents malfunction in the other LED lighting fixtures 1.

[0292] For example, the peripheral portion 82 is colored. Specifically, the peripheral portion 82 is black. For example, the peripheral portion 82 absorbs infrared rays. This allows the peripheral portion 82 to absorb unnecessary optical signals when the optical signal is an infrared signal, thereby preventing malfunction of the LED lighting device 1. If the transmittance of the peripheral portion 82 is equivalent to that of the light-transmitting portion 81, an optical signal passing through the peripheral portion 82 may be reflected by the first surface 21a of the main plate portion 21, reflected by other components, and then incident on the light-receiving portion 64 via the light-transmitting portion 81, the light-receiving opening 26, and the light-receiving hole 77. Absorbing unnecessary optical signals with the peripheral portion 82 reduces the possibility of the unnecessary optical signals entering the light-receiving portion 64. The peripheral portion 82 may be purple, blue, or the like. The peripheral portion 82 may also absorb visible light such as red.

[0293] 19 , the light-transmitting portion 81 is larger than the light-receiving opening 26 in a plan view. The light-receiving opening 26 is entirely covered by the light-transmitting portion 81. This makes it possible to prevent the optical signal that should pass through the light-receiving opening 26 from being absorbed by the peripheral portion 82. In other words, the light-receiving performance of the light-receiving portion 64 via the light-receiving opening 26 can be maximized.

[0294] In this embodiment, the insect repellent sheet 80 and the light-transmitting portion 81 are each rectangular in shape in a plan view. This makes it easier to handle the insect repellent sheet 80 and improves the accuracy of its attachment position to the first surface 21a of the main plate 21 of the frame 20. The peripheral portion 82 is provided to surround three sides of the rectangular light-transmitting portion 81. The remaining side of the light-transmitting portion 81 is concavely curved. Specifically, as shown in FIGS. 11 , 18 , and 22 , the light-transmitting portion 81 has a curved side 81a. For example, the curved side 81a may be a circular arc or an elliptical arc, but is not limited thereto. The curved side 81a is curved to avoid the protrusion 72 of the wireless module 50. Avoiding contact between the protrusion 72 and the light-transmitting portion 81 improves adhesion between the insect repellent sheet 80 and the main plate 21 of the frame 20.

[0295] 23, the insect repellent sheet 80 has a first layer 83 and a second layer 84. The second layer 84 is laminated on the main surface of the first layer 83.

[0296] The first layer 83 is a layer that is transparent to optical signals. The first layer 83 is made of a resin material that has high transmittance to infrared rays, such as polyethylene or polypropylene. The shape of the first layer 83 in a plan view is the same as the shape of the insect repellent sheet 80 in a plan view, and the first layer 83 has curved sides 81a.

[0297] The second layer 84 is a layer that constitutes the peripheral portion 82. For example, the second layer 84 is a resin layer containing a colored pigment or dye, such as black. The shape of the second layer 84 in a planar view is the same as the shape of the peripheral portion 82 in a planar view, and is generally U-shaped. The portion of the first layer 83 that is not covered by the second layer 84 is the light-transmitting portion 81. In other words, the thickness of the light-transmitting portion 81 is thinner than the thickness of the peripheral portion 82. This makes it possible to suppress attenuation of the optical signal when passing through the light-transmitting portion 81.

[0298] In this embodiment, the insect repellent sheet 80 has an adhesive surface 84a. This makes it easy to attach the insect repellent sheet 80. The adhesive surface 84a is one of the main surfaces of the second layer 84 that is opposite to the first layer 83. In other words, the adhesive surface 84a is provided in the peripheral portion 82, and not in the light-transmitting portion 81. This makes it possible to suppress attenuation of optical signals when passing through the light-transmitting portion 81.

[0299] The main features of the lighting device and lighting fixture according to several aspects of the present invention will be described below based on embodiments.

[0300] The lighting device according to the first embodiment is, for example, the LED lighting device 3 described above, and includes a light source unit 10, a power supply unit 4 that supplies power to the light source unit 10, a frame 20 having a main board 21, a wireless device (receiving device) 60 or 60A having a light receiving unit 64 that receives an optical signal, and a case 70 that houses the wireless device 60 or 60A. The main board 21 has a first surface 21a on which the light source unit 10 is disposed, a second surface 21b facing away from the first surface 21a and on which the power supply unit 4 and at least a portion of the wireless device 60 are disposed, and a light-receiving opening 26 provided on the first surface 21a at a position that overlaps with the light receiving unit 64 in a plan view. The LED lighting device 3 further includes an insect repellent sheet (blocking piece) 80 that blocks the light-receiving opening 26 from the first surface 21a side. The insect repellent sheet 80 overlaps the light receiving opening 26 in a planar view and has a light-transmitting portion 81 that is transparent to optical signals, and a peripheral portion 82 that is provided around the light-transmitting portion 81 and blocks light of the same wavelength component as the optical signal.

[0301] Thus, by covering the light-receiving opening 26 with the insect repellent sheet 80, it is possible to prevent the intrusion of foreign matter such as insects and dust. Furthermore, the peripheral portion 82 provided around the light-transmitting portion 81 can block light having the same wavelength component as the optical signal. Therefore, other optical signals emitted from a remote controller or the like for the purpose of controlling other LED lighting devices 3 can be blocked by the peripheral portion 82, preventing the signals from being received by the light-receiving portion 64. This can prevent malfunction of the LED lighting device 3. As described above, according to this embodiment, it is possible to prevent the intrusion of foreign matter and malfunction with a simple configuration of a single insect repellent sheet 80.

[0302] Furthermore, for example, the lighting device according to the second embodiment is the lighting device according to the first embodiment, in which the peripheral portion 82 has a lower transmittance for optical signals than the transparent portion 81.

[0303] This allows the peripheral portion 82 to suppress the transmission of other optical signals emitted from a remote controller or the like for the purpose of controlling other LED lighting devices 3, thereby suppressing malfunctions due to erroneous detection of other optical signals.

[0304] Furthermore, for example, the lighting device according to the third embodiment is the lighting device according to the second embodiment, in which the color of the peripheral portion 82 is colored.

[0305] This allows the peripheral portion 82 to absorb other optical signals emitted from a remote controller or the like for the purpose of controlling other LED lighting devices 3, thereby suppressing malfunctions due to erroneous detection of other optical signals.

[0306] Furthermore, for example, the lighting device according to the fourth embodiment is the lighting device according to the third embodiment, in which the color of the peripheral portion 82 is black.

[0307] This allows the peripheral portion 82 to absorb other optical signals emitted from a remote controller or the like for the purpose of controlling other LED lighting devices 3, thereby suppressing malfunctions due to erroneous detection of other optical signals.

[0308] Furthermore, for example, an illumination device according to a fifth aspect is the illumination device according to any one of the first to fourth aspects, in which the light-transmitting portion 81 is larger than the light-receiving opening 26 in plan view.

[0309] This makes it possible to prevent the peripheral portion 82 from absorbing the optical signal for controlling the LED lighting device 3 to be controlled.

[0310] Furthermore, for example, the lighting device according to a sixth aspect is the lighting device according to any one of the first to fifth aspects, and the insect repellent sheet 80 and the light-transmitting portion 81 each have a rectangular shape in plan view.

[0311] This makes it easier to handle the insect repellent sheet 80, and improves the accuracy of the attachment position to the first surface 21a of the main plate portion 21 of the frame 20.

[0312] Furthermore, for example, the lighting device according to the seventh aspect is the lighting device according to the sixth aspect, in which the peripheral portion 82 is arranged to surround three sides of the translucent portion 81 in a planar view, and the remaining side of the translucent portion 81 is curved concavely.

[0313] As a result, one side of the light-transmitting portion 81 is curved, so that contact with the protruding portion 72 of the case 70 can be avoided. The adhesion between the insect repellent sheet 80 and the main plate portion 21 of the frame 20 can be improved.

[0314] Furthermore, for example, an illumination device according to an eighth aspect is the illumination device according to any one of the first to seventh aspects, in which the thickness of the light-transmitting portion 81 is thinner than the thickness of the peripheral portion 82.

[0315] This makes it possible to suppress attenuation of the optical signal when passing through the light transmitting portion 81.

[0316] Furthermore, for example, a lighting device according to a ninth aspect is the lighting device according to any one of the first to eighth aspects, in which the insect repellent sheet 80 has an adhesive surface 84a.

[0317] This makes it easier to attach the insect repellent sheet 80.

[0318] Furthermore, for example, the lighting device according to the tenth aspect is the lighting device according to the ninth aspect, in which the adhesive surface 84a is provided on the peripheral portion 82 and not on the light-transmitting portion 81.

[0319] This makes it possible to suppress attenuation of the optical signal at the adhesive surface 84a when passing through the light transmitting portion 81.

[0320] Furthermore, for example, an illumination device according to an eleventh aspect is the illumination device according to any one of the first to tenth aspects, in which the optical signal is an infrared signal.

[0321] This reduces the influence of the illumination light from the LED lighting device 3, enabling accurate infrared communication.

[0322] Furthermore, a lighting fixture according to a twelfth aspect is, for example, the LED lighting fixture 1 described above, and includes the lighting device according to any one of the first to eleventh aspects and a fixture body 2 to which the lighting device is attached.

[0323] As a result, since the lighting device according to any one of the above-described aspects is included, it is possible to realize an LED lighting device 1 that can suppress the intrusion of foreign matter and malfunction with a simple configuration.

[0324] (others) Although the lighting device and lighting fixture according to the present invention have been described above based on the above-mentioned embodiment, the present invention is not limited to the above-mentioned embodiment.

[0325] For example, in the embodiment, the two or more wire passage holes 74 are through holes provided in the case 70, and the unused wire passage holes 74 are blocked with blocking pieces 67, but this is not limited thereto. The two or more wire passage holes 74 may be holes that can be easily penetrated when inserting the wire cord 66, such as knockout holes. That is, each of the two or more wire passage holes 74 includes a through hole that penetrates the outer wall portion 71a and a blocking piece that blocks the through hole. The blocking piece may be slightly smaller than the through hole and connected to the outer wall portion 71a at one or two locations. The connection portion between the blocking piece and the outer wall portion 71a is a portion with a weak strength, such as a narrow width, and the blocking piece can be easily separated from the outer wall portion 71a by hand or with a tool.

[0326] Furthermore, two or more wire passage holes 74 do not have to be provided in the same outer wall portion 71a. For example, two or more wire passage holes 74 may be provided in two or more of the outer wall portions 71a to 71d of the case 70. Furthermore, the wire passage hole 74 used to insert the wire cord 66 may be the wire passage hole 74 closest to the connector 65. For example, if the connector 65 is not located in front of the wire passage hole 74 closest to the connector 65, the wall surface of the wire passage hole 74 (the outer wall portion 71a) can function as a tension stopper. Furthermore, if there is a low possibility that excessive tension will be applied to the wire cord 66, the wire passage hole 74 closest to the connector 65 can be used, and the wire cord 66 can be shortened. Furthermore, in such a case, the inner wall portion 76 on which the wire cord 66 is fastened does not have to be provided.

[0327] Furthermore, for example, the opening 25 may not be provided in the main plate portion 21 of the frame 20. In this case, the wireless module 50 is disposed, for example, outside the longitudinal end of the main plate portion 21 in a plan view of the first surface 21a of the main plate portion 21. The wireless module 50 may be fixed to the end cap 40 instead of the frame 20. Alternatively, the wireless module 50 may be fixed to the fixture body 2.

[0328] Furthermore, for example, the peripheral portion 82 of the insect repellent sheet 80 may have the same transmittance as the light-transmitting portion 81, and may be configured to block obliquely incident light. For example, the surface of the peripheral portion 82 may be provided with a light-scattering structure such as minute irregularities, which scatters the obliquely incident light, thereby preventing optical signals for controlling other LED lighting devices 3 from entering the light-receiving opening 26.

[0329] Furthermore, there are no particular limitations on the planar shapes of light-transmitting portion 81 and peripheral portion 82. For example, light-transmitting portion 81 may be circular, and peripheral portion 82 may be provided so as to surround the entire periphery of circular light-transmitting portion 81. Alternatively, peripheral portion 82 may be provided in an L-shape along two sides of rectangular light-transmitting portion 81.

[0330] Furthermore, for example, the insect repellent sheet 80 does not have to have the adhesive surface 84a, and the insect repellent sheet 80 may be fixed by another adhesive sheet or the like. Alternatively, the insect repellent sheet 80 may be fixed by being pressed against the main plate portion 21 of the frame 20 by the end cap 40.

[0331] If the wireless module 50 does not include the light receiving unit 64, the insect repellent sheet 80 does not need to be provided.

[0332] Also, for example, the case 70 may be provided with only one positioning portion 73. The positioning portion 73 may be provided at a position facing the end portion 13 of the light source unit 10 in the longitudinal direction. For example, by ensuring a large gap between the end portion 13 of the light source unit 10 and the positioning portion 73, it is possible to prevent the substrate 11 of the light source unit 10 from coming into contact with the positioning portion 73 even if it expands. Alternatively, the substrate 11 and the positioning portion 73 may be in contact with each other. When the substrate 11 expands, the expansion of the substrate 11 may be released to the side opposite the end portion where the wireless module 50 is provided.

[0333] Furthermore, the positioning portion 73 is provided on the protruding portion 72 of the case 70, but is not limited to this. The positioning portion 73 may be a protrusion protruding from the top surface portion 71f, and a gap may be provided between the protruding portion 72 and the positioning portion 73. Since the distance between the protruding portion 72 and the positioning portion 73 is increased, the distance between the antenna 62 in the protruding portion 72 and the opening inner wall 25a of the frame 20 can be increased. This can improve the wireless communication performance of the wireless device 60 or 60A.

[0334] 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. 24(a), but this is not limited thereto. For example, a fixture body 2A having a rectangular cross section as shown in FIG. 24(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. 24(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. 24(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.

[0335] 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. 24(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.

[0336] 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.

[0337] 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).

[0338] 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.

[0339] 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.

[0340] 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.

[0341] In addition, the present invention also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art would conceive, and forms realized by arbitrarily combining the components and functions of each embodiment within the scope of the present invention. Furthermore, the present invention also includes any combination of two or more claims from 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 cites all of the superordinate claims within the scope of technical contradiction, the present invention also includes all combinations of claims included in that multiple claim or multiple multiple multiple claim. [Explanation of symbols]

[0342] 1 LED lighting fixture 2, 2A, 2B fixture body 3 LED lighting device 4 Power supply unit (power supply section) 10 Light source section 13 End 20 frames 21 Main plate part 21a 1st page 21b 2nd side 25 Opening 25a, 25b, 25c Opening inner wall (wall surface) 26 Light receiving aperture 50, 50A wireless module 60, 60A radio equipment 61, 61A board 62 Antenna 64 Light receiving part 65 Connector 66 Wiring cord (wiring) 67 Obstruction piece 70 cases 71 Main body 72 Protrusion 73, 73a, 73b Positioning parts 74, 74a, 74b wiring holes 76, 76a, 76b, 76c, 76d inner wall 80 Insect repellent sheet (blocking piece) 81 Translucent part 81a curved edge 82 Periphery 84a Adhesive side

Claims

1. 1. A lighting device, comprising: a light source unit; a power supply unit that supplies power to the light source unit; a frame having a main plate portion; a receiving device having a light receiving unit for receiving an optical signal; a case that houses the receiving device, The main plate portion is a first surface on which the light source unit is disposed; a second surface facing away from the first surface and on which the power supply unit and at least a part of the receiving device are disposed; an opening provided at a position overlapping the light receiving portion in a plan view of the first surface, the lighting device further includes a blocking piece that blocks the opening from the first surface side, The blocking piece is a light-transmitting portion that overlaps the opening in the plan view and that is transparent to the optical signal; a peripheral portion provided around the light transmitting portion and blocking light having the same wavelength component as the optical signal; Lighting equipment.

2. the peripheral portion has a lower transmittance for the optical signal than the transparent portion; The lighting device according to claim 1 .

3. The color of the peripheral portion is colored.

3. The lighting device according to claim 2.

4. The color of the peripheral portion is black.

4. The lighting device according to claim 3.

5. The light-transmitting portion is larger than the opening in the plan view. The lighting device according to any one of claims 1 to 4.

6. The shape of each of the blocking piece and the light transmitting portion in the plan view is rectangular. The lighting device according to any one of claims 1 to 4.

7. the peripheral portion is provided so as to surround three sides of the light-transmitting portion in the plan view, The remaining side of the light-transmitting portion is concavely curved.

7. The lighting device according to claim 6.

8. The thickness of the light-transmitting portion is thinner than the thickness of the peripheral portion. The lighting device according to any one of claims 1 to 4.

9. The blocking piece has an adhesive surface. The lighting device according to any one of claims 1 to 4.

10. the adhesive surface is provided on the peripheral portion and is not provided on the light-transmitting portion; 10. The lighting device according to claim 9.

11. the optical signal is an infrared signal; The lighting device according to any one of claims 1 to 4.

12. The lighting device according to any one of claims 1 to 4, and a fixture body to which the lighting device is attached. Lighting fixtures.

Images