Lighting fixtures

Abstract

The power supply case housing the receiver unit has a waterproof structure, and it is possible to receive radio signals using the receiver unit housed within the power supply case. [Solution] The lighting fixture 1 comprises a light-emitting unit 23, a power supply board 51 that supplies power to the light-emitting unit 23, a receiving unit 62 that receives radio wave signals including control signals for controlling the power supply board 51, a power supply case 53 that houses the power supply board 51 and the receiving unit 62 and has an air gap formed in its wall surface that connects the inside and outside, and a sealing member 54 that is radio wave transparent and seals the air gap in the power supply case 53.

Description

Technical Field

[0001] The present disclosure relates to a lighting fixture having a receiving unit that receives a wireless signal.

Background Art

[0002] Since it is not easy to directly operate a lighting fixture installed at a high place such as a high ceiling, conventionally, there has been a lighting fixture including a receiving unit that receives a wireless signal for controlling the lighting state of a light source unit, and controlling the lighting state of the light source unit based on the received wireless signal. Depending on the arrangement of the receiving unit, in such a lighting fixture, the components of the lighting fixture may shield the wireless signal, and the reception intensity of the wireless signal received by the receiving unit may decrease. In such a lighting fixture, a structure for suppressing a decrease in the reception intensity of the receiving unit has been considered. As such a lighting fixture, for example, Patent Document 1 discloses a lighting fixture configured such that a receiving unit that receives a wireless signal of a predetermined frequency is disposed outside a box-shaped power supply unit, and the power supply unit controls the lighting state of a light emitting module according to the received wireless signal. When the receiving unit is disposed inside the box-shaped power supply unit, the wireless signal is shielded by the side wall or the like of the power supply unit, and the reception intensity of the wireless signal by the receiving unit decreases. However, in this lighting fixture, since the receiving unit is disposed outside the box-shaped power supply unit, the wireless signal is not shielded, and a decrease in the reception intensity is suppressed. Also, for example, Patent Document 2 discloses a lighting fixture configured such that a wireless transmission / reception unit is provided inside a metal power supply housing provided with a power supply device for controlling the lighting state of a light source unit, and a notch is provided in the power supply housing so that the wireless transmission / reception unit is visible from the outside. In this lighting fixture, although the wireless signal composed of radio waves transmitted and received by the wireless transmission / reception unit provided inside the power supply housing is shielded by the power supply housing, a part of the wireless signal passes through the notch provided in the power supply housing, so that the wireless transmission / reception unit can transmit and receive the wireless signal with a controller disposed outside the lighting fixture.

Prior Art Documents

Patent Documents

[0003] ​​ Patent No. 6963736 [Patent Document 2] Patent No. 6963721 [Overview of the project] [Problems that the invention aims to solve]

[0004] Lighting fixtures that control the illumination state of the light source using wireless signals as described above are sometimes placed outdoors, and outdoor lighting fixtures require a waterproof structure. In the lighting fixture described in Patent Document 1, the receiving unit is located outside the power supply unit, so if this lighting fixture is to be made waterproof, a waterproof structure for the receiving unit must be added separately from the power supply unit, making the structure complex. In addition, in the lighting fixture described in Patent Document 2, although the wireless transmitting and receiving unit is located inside the power supply housing together with the power supply unit, there is a notch that allows wireless signals consisting of radio waves, i.e., radio wave signals, to pass through, so rainwater and other liquids can easily enter through the notch, resulting in poor waterproofing of the receiving unit.

[0005] This disclosure is made to solve the above-mentioned problems, and aims to provide a lighting fixture in which the power supply case housing the power supply board and the receiving unit has a waterproof structure, and in which radio wave signals including control signals for controlling the power supply board can be received by the receiving unit housed in the power supply case. [Means for solving the problem]

[0006] The lighting fixture according to this disclosure comprises a power supply board that supplies power to a light-emitting section, a receiving section that receives radio wave signals including control signals for controlling the power supply board, and a power supply case that houses the power supply board and the receiving section, with a gap formed in the wall surface that connects the inside and outside, and the gap in the power supply case is sealed with a sealing member that is transparent to radio waves. [Effects of the Invention]

[0007] In the lighting fixture of this disclosure, a gap formed on the wall surface of the power supply case in which the power supply board and the receiving unit are housed, and which connects the inside and outside, is sealed with a radio wave transparent sealing member. As a result, the sealing member seals the gap in the power supply case, preventing rainwater from entering the power supply case, and the radio wave transparent sealing member allows radio wave signals to pass through. Therefore, a lighting fixture can be obtained in which the power supply case has a waterproof structure and the receiving unit housed in the power supply case can receive radio wave signals. [Brief explanation of the drawing]

[0008] [Figure 1] This is a perspective view of the lighting fixture according to Embodiment 1, seen from diagonally above. [Figure 2] This is an exploded perspective view showing a disassembled lighting fixture according to Embodiment 1. [Figure 3] This is a perspective view of the base according to Embodiment 1, seen from diagonally above. [Figure 4] This is a perspective view of the top panel according to Embodiment 1, seen from diagonally above. [Figure 5] This is a cross-sectional view showing the surrounding structure of the support bracket for the lighting fixture according to Embodiment 1. [Figure 6] This is an exploded perspective view showing the power supply device according to Embodiment 1 after disassembly. [Figure 7] This is an exploded perspective view showing the internal wiring according to Embodiment 1. [Figure 8] This is a cross-sectional view showing the end of the power supply case of the power supply device according to Embodiment 1, in a state where no sealing member is provided. [Figure 9] This is a cross-sectional view showing the end of the power supply case of the power supply device according to Embodiment 1, in a state where no sealing member is provided. [Figure 10] This is a perspective view of the sealing member according to Embodiment 1, viewed from diagonally above. [Figure 11] This is an exploded perspective view showing the wireless unit according to Embodiment 1 after disassembly. [Figure 12] This is a cross-sectional view showing the state in which a sealing member is arranged at the end of the power supply case of the power supply device according to Embodiment 1. [Figure 13] It is a cross-sectional view showing a state where a sealing member is arranged at an end of a power supply case of the power supply device according to Embodiment 1.

Embodiments for Carrying out the Invention

[0009] Hereinafter, the lighting fixture according to the embodiment will be described with reference to the drawings. In the following drawings, those denoted by the same reference numerals are the same or corresponding ones. Also, in the entire specification, terms indicating directions are appropriately used, but these terms are for the purpose of explanation and do not limit the configuration of the lighting fixture.

[0010] Embodiment 1. The configuration of the lighting fixture 1 according to Embodiment 1 will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view of the lighting fixture 1 according to Embodiment 1 seen from obliquely above, and FIG. 2 is an exploded perspective view showing the lighting fixture 1 of FIG. 1 disassembled.

[0011] As shown in FIG. 1, the lighting fixture 1 has an arm 10, a light source unit 18 attached to the arm 10, and a power supply device 50 disposed in the light source unit 18. The lighting fixture 1 is installed, for example, by fixing the arm 10 to an attachment portion such as under the eaves outdoors with a fixture not shown. Since the lighting fixture 1 is installed outdoors, it has a waterproof structure for protecting electrically connected portions such as electric wires and connectors.

[0012] As shown in FIG. 2, the arm 10 is formed by shaping metal into a U shape, and has an arm horizontal portion 11 and arm vertical portions 13 provided in pairs protruding downward from both ends in the longitudinal direction of the arm horizontal portion 11. Two mounting holes 12 are formed in the arm horizontal portion 11, and a fixture such as a suspension bolt not shown provided on the attachment portion is inserted and fixed into the mounting holes 12. At the tip of each of the vertically provided arm portions 13 provided in pairs, a circular connection hole 15 is formed through which a connection member 17 for attaching the light source unit 18 to the arm 10 is inserted. Inside the tip of the arm vertical portion 13, at a position corresponding to this connection hole 15, a nut 16 is fixed by means such as welding or caulking. A female screw is formed in the hole of the nut 16, and a male screw is formed in the connection member 17. The connection member 17 is inserted through the connection hole 15 of the arm vertical portion 13, the base side connection member insertion hole 38 of the light source unit 18, and the top plate side connection member insertion hole 45, and is fastened to the nut 16, whereby the light source unit 18 is rotatably attached to the arm 10. Note that the arm 10 is preferably formed of stainless steel, for example, in a salt-resistant environment and a corrosion-resistant environment.

[0013] As shown in FIG. 2, the light source unit 18 includes a heat sink 26 in which a plurality of fins 27 are arranged side by side on the upper surface of the base plane portion 32 of the base 31, a light emitting portion 23 that is attached to the lower surface of the base plane portion 32 of the base 31 and emits light by being supplied with power from a power supply device 50, a cover 19 that covers the light emitting portion 23 and is attached to the lower surface of the base plane portion 32 of the base 31, a top plate 39 disposed above the heat sink 26, and a support fitting 46 that connects the heat sink 26 and the top plate 39. The light emitting portion 23 is configured by mounting a light emitting element such as an LED (Light Emitting Diode) that emits light when supplied with power on a rectangular light source substrate.

[0014] As shown in FIG. 2, the heat sink 26 has a base 31 on which the light emitting portion 23 is mounted on the lower surface, and fins 27 that are arranged side by side with a gap on the upper surface of the base plane portion 32 of the base 31 and dissipate the heat generated by the light emitting portion 23. The fin 27 is formed by bending a sheet metal into a U-shape and has a fin flat portion that is attached in close contact with the base 31 and fin upright portions that protrude upward from both ends of the fin flat portion. The fin 27 is positioned on the upper surface of the base flat portion 32, and heat emitted from the light-emitting portion 23 attached to the lower surface of the base flat portion 32 is transferred to the fin 27 via the base flat portion 32, and the heat is dissipated from the fin flat portion and the fin upright portions. Figure 3 is a perspective view of the base 31 shown in Figure 2, viewed from diagonally above. As shown in Figure 3, the base 31 has a base flat portion 32 to which the light-emitting portion 23 and cover 19 are attached to the lower surface and the fins 27 are attached to the upper surface, and a pair of base side portions 35 are provided that protrude upward from both the left and right ends of the base flat portion 32. A base bent portion 36 is provided at the front end of the base flat portion 32, which is bent downward. A wiring insertion hole 34 is formed in the base flat portion 32 through which internal wiring 57, which will be described later, connecting the light-emitting portion 23 and the power supply unit 50, is inserted. When the internal wiring 57 is inserted through this wiring insertion hole 34, it is sealed with a packing, thereby preventing water from entering the inside of the cover 19. The base side portion 35 is provided with a rectangular lower base side portion 351 and a trapezoidal upper base side portion 352 that is above the lower base side portion 351 and has a shorter side at the top. On the lower base side portion 351 of each left and right base side portion 35, there are two top plate fastening portions 37 formed by cutting and raising a portion at the same height at the front and rear. The top plate 39 is attached to the upper surface of the top plate fastening portion 37. The upper base side portion 352 has a base-side connecting member insertion hole 38 through which the connecting member 17 is inserted. The base-side connecting member insertion hole 38 is an elongated hole formed by bending in the front-rear direction from the center of the surface of the upper base side portion 352, and the position through which the connecting member 17 is inserted can be moved along the length of the base-side connecting member insertion hole 38, so the position in which the arm 10 is attached to the base side portion 35 can be flexibly changed. The base bent portion 36 improves the rigidity of the base 31 by bending the end of the base flat portion 32. The base bent portion 36 is bent downward from the end of the base flat portion 32, covering the mating surface between the base flat portion 32 and the cover 19, thereby preventing water or dust from directly contacting the mating surface.

[0015] As shown in Figure 2, the cover 19 has a lens 20 that efficiently extracts light emitted from the light-emitting element and controls the beam angle, and is formed using a light-transmitting resin such as polycarbonate and acrylic resin. Multiple lenses 20 are formed in a conical shape and are provided so as to face each of the light-emitting elements of the light-emitting section 23.

[0016] The top plate 39 is mounted on top of the base 31 and also serves as the mounting point for the power supply unit 50. Figure 4 is a perspective view of the top plate 39, which is viewed from diagonally above. The top plate 39 has a top plate flat section 40 on which the power supply unit 50 is attached, and a pair of top plate side sections 42 that protrude upward from both the left and right ends of the top plate flat section 40. A top plate bent section 43 is provided at the front end of the top plate flat section 40, which is bent downward. The top plate surface 40 has heat dissipation holes 41 and top plate fastening holes 44. The heat dissipation holes 41 are elongated holes formed in the longitudinal direction of the power supply unit 50, and improve the heat dissipation efficiency of the heat sink 26 by allowing the air heated by the heat dissipation from the heat sink 26 to escape to the upper side of the top plate 39. The top plate fastening holes 44 are through which fasteners for attaching the top plate surface 40 to the base 31 are inserted, and the top plate 39 is attached to the base 31 by inserting and fixing the fasteners through these top plate fastening holes 44 and the top plate fastening portion 37 of the base 31. The top plate side portion 42 is formed in a trapezoidal shape with a shorter side at the top to reduce weight. A top plate side connecting member insertion hole 45 is formed in the top plate side portion 42. The top plate side connecting member insertion hole 45 is an elongated hole formed by bending and extending in the front-rear direction from the center of the surface of the top plate side portion 42, similar to the base side connecting member insertion hole 38. The folded portion 43 of the top plate improves the rigidity of the top plate 39 by folding the end of the flat portion 40 of the top plate.

[0017] As shown in Figure 2, the support bracket 46 is made of a highly heat-dissipating aluminum alloy and has a U-shaped cross-section, connecting the upper surface of the base flat portion 32 and the lower surface of the top plate flat portion 40. Figure 5 is a cross-sectional view showing the surrounding structure of the support bracket 46 shown in Figure 2. As shown in Figure 5, the support bracket 46 consists of a support bracket bottom portion 47 attached to the upper surface of the base flat portion 32, a support bracket top portion 48 attached to the lower surface of the top plate flat portion 40, and a support bracket side portion 49 connecting the support bracket bottom portion 47 and the support bracket top portion 48. The support bracket 46 is positioned so that the support bracket side portion 49 covers the internal wiring 57, which will be described later, protecting the internal wiring 57 from poor contact due to external forces and deterioration of the wiring insulation due to direct sunlight.

[0018] Figure 6 is an exploded perspective view of the power supply unit 50 shown in Figure 2, viewed from diagonally above. As shown in Figure 6, the power supply unit 50 includes a power supply board 51, a case bottom 52 to which the power supply board 51 is mounted, an external power supply (not shown) and power supply wires 56 electrically connected to the power supply board 51, internal wiring 57 electrically connected to the power supply board 51 and the light-emitting unit 23, a connector cover 58 that covers a part of the internal wiring 57 and is mounted on the outside of the power supply case 53, a power supply case 53 that houses the power supply board 51 and the wireless unit 60 (described later), a sealing member 54 that seals the power supply case 53, and a wireless unit 60 that receives radio signals including control signals from the power supply board 51. The power supply board 51 converts AC power supplied from an external power source into DC power and supplies DC power to the light-emitting unit 23. The power supply board 51 is provided with a power supply board connector 511 to which the harness 65 of the wireless unit 60, which will be described later, is electrically connected. The case bottom 52 is made of a highly heat-dissipating aluminum alloy and is formed in a U-shape, with the power supply board 51 positioned on its top surface. Figure 7 is an exploded perspective view of the internal wiring 57 shown in Figure 6, viewed from diagonally above. As shown in Figure 7, the internal wiring 57 includes a first internal wiring 572 connected to the power supply board 51, a relay connector 571 connected to the first internal wiring 572, a second internal wiring 573 connected to the relay connector 571 and the light-emitting unit 23, a connector case 574 formed in a box shape with an open bottom that houses the relay connector 571, and a connector packing 575 that seals the opening at the bottom of the connector case 574. The connector case 574 is made of resin and is attached to the outside of the end plate 55 of the power supply case 53. The connector packing 575 is made of an elastic, radio wave transparent resin or silicone and is attached to the connector case 574 so as to seal the opening at the bottom of the connector case 574, thereby preventing water from entering the inside of the connector case 574. The connector cover 58 is formed in a box shape using a light-resistant metal and is attached to the power supply case 53 while covering the connector case 574. By blocking sunlight from shining on the connector case 574, deterioration of the connector case 574 due to ultraviolet rays is suppressed.

[0019] The power supply case 53 has a cylindrical portion 531 formed in a cylindrical shape by extrusion molding using an aluminum alloy, and metal end plates 55 attached to the cylindrical portion 531, covering the openings at both ends of the cylindrical portion 531. The cylindrical portion 531 has openings formed with the cylindrical portion ends 532, which are the ends in the front-rear direction, as its outer edges. The end plates 55 are provided with an end plate side portion 551 that covers the opening of the cylindrical portion 531, and an end plate bottom portion 552 that protrudes from the lower end of the end plate side portion 551 in the front-rear direction away from the cylindrical portion 531. The power supply case 53 is attached to the top plate 39 by fixing this end plate bottom portion 552 to the top plate flat portion 40 of the top plate 39. The side portion 551 of the end plate has holes 553 for power supply wires 56 through which power supply wires 56 electrically connected to an external power supply and a power supply board 51 are inserted, and holes 554 for internal wiring 57 electrically connected to the power supply board 51 and the light-emitting unit 23 are inserted. Figures 8 and 9 are cross-sectional views showing the ends of the power supply case 53 of the power supply device 50 shown in Figure 6, namely the ends of the cylindrical portion 532 and the side portion 551 of the end plate. Figure 8 is a cross-sectional view of a section perpendicular to the upper surface of the cylindrical portion 531 and the side portion 551 of the end plate, passing through the power supply wire hole 553 of the side portion 551 of the end plate. Figure 9 is a cross-sectional view of a section perpendicular to the upper surface of the cylindrical portion 531 and the side portion 551 of the end plate, passing through the internal wiring hole 554. Figures 8 and 9 show the state in which the sealing member 54 is not installed. In this state, the power supply case 53 has a gap in the wall surface that connects the inside and outside. A first gap G1 is formed between the cylindrical end portion 532, which is the outer edge of the opening at the end of the cylindrical portion 531, and the end plate side portion 551. A second gap G2 is formed in the power supply wire hole 553 of the end plate side portion 551, and a third gap G3 is formed in the internal wiring hole 554 of the end plate side portion 551.

[0020] Figure 10 is a perspective view of the sealing member 54 shown in Figure 6, viewed from diagonally above. As shown in Figure 10, the sealing member 54 is formed in a flat plate shape using, for example, an elastomer or resin such as silicone or rubber that is elastic and radio wave permeable, and when placed between the cylindrical end portion 532 and the end plate 55 shown in Figures 8 and 9, it has a first sealing portion 541 located in the first gap G1 between the cylindrical end portion 532 and the end plate side portion 551, a second sealing portion 542 located in the second gap G2 which is the power supply wire hole 553 in the end plate side portion 551, a third sealing portion 543 located in the third gap G3 which is the internal wiring hole 554 in the end plate side portion 551, and a pair of sealing member protrusions 544 that protrude from the surface in the front-rear direction toward the cylindrical portion 531. The sealing member projection 544 is formed in a cylindrical shape with a bulging tip, and the wireless unit 60 is attached to it.

[0021] Figure 11 is an exploded perspective view of the wireless unit 60 shown in Figure 6, viewed from diagonally above. As shown in Figure 11, the wireless unit 60 has a receiving unit 62 that receives radio signals including control signals for controlling the power supply board 51, a harness 65 that is electrically connected to the power supply board 51 and the receiving unit 62, and an outer casing 61 that houses the receiving unit 62. The receiving unit 62 includes a wireless circuit board 621, an antenna 622 mounted on the wireless circuit board 621 that receives radio wave signals including control signals, and an antenna connector 623 mounted on the wireless circuit board 621 that is connected to the harness 65. The outer casing 61 is formed of a resin that is both insulating and radio wave transparent, and has a plate-shaped first outer casing 611 and a second outer casing 612 that houses the wireless circuit board 621 and is attached to the first outer casing 611. The first outer casing 611 is provided with a locking portion 613, such as a snap-fit, which engages with the second outer casing 612. The second outer casing 612 is provided with an outer casing mounting portion 615 through which an outer casing mounting hole 614 is formed for inserting the sealing member projection 544 of the sealing member 54. The tip of the sealing member projection 544 of the sealing member 54 is inserted into the outer casing mounting hole 614 of the outer casing mounting portion 615 in a state of elastic deformation to compress it, and after the sealing member projection 544 is inserted, the elastic deformation is released, causing the sealing member projection 544 to catch on the outer casing mounting portion 615, and the wireless unit 60 is attached to the sealing member 54.

[0022] The sealed member 54 to which the wireless unit 60 is attached is positioned between the cylindrical end portion 532 and the end plate 55 of the power supply unit 50, as shown in Figures 8 and 9, and the cylindrical end portion 532 and the end plate 55 are fixed together by fasteners. As a result, the wireless unit 60 attached to the electrically insulating sealed member 54 is housed inside the power supply case 53 in a state of electrical isolation from the power supply board 51 attached to the conductive power supply case 53. With this structure, there is no need to increase the distance between the power supply board 51 and the wireless unit 60 housed inside the power supply case 53 to ensure insulation between them, the size of the power supply case 53 is suppressed, and the degree of freedom in arranging the power supply board 51 and the wireless unit 60 housed inside the power supply case 53 is increased.

[0023] Figures 8 and 9 were cross-sectional views showing the state in which the sealing member 54 is not installed near the end 532 of the cylindrical part and the side surface 551 of the end plate of the power supply unit 50. Figures 12 and 13 are cross-sectional views showing the state in which the sealing member 54 is placed between the end 532 of the cylindrical part and the end plate 55, respectively, and the end 532 of the cylindrical part and the end plate 55 are fixed together by fasteners.

[0024] In the state shown in Figures 12 and 13, the first sealing portion 541, which is positioned in the first gap G1 between the end portion 532 of the cylindrical part and the side portion 551 of the end plate, is in close contact with the end plate 55 and the end portion 532 when the end plate 55 is pressed toward the end portion 532 by the fixing device, thereby preventing water from entering the power supply case 53 from the outside through the first gap G1. The second sealing portion 542 shown in Figure 12 is formed in a hollow cylindrical shape with an inner diameter smaller than the outer diameter of the power supply wire 56 and an outer diameter smaller than the inner diameter of the power supply wire hole 553 in the side surface portion 551 of the end plate. When the power supply wire 56 is inserted through it, it elastically deforms in the outer diameter direction and comes into close contact with the edge of the power supply wire 56 and the power supply wire hole 553, thereby preventing water from entering the power supply case 53 from the outside through the second gap G2. The third sealing portion 543 shown in Figure 13 is formed in a hollow cylindrical shape with an inner diameter smaller than the outer diameter of the internal wiring 57 and an outer diameter smaller than the inner diameter of the internal wiring hole 554 of the end plate side portion 551. When the internal wiring 57 is inserted through it, it elastically deforms in the outer diameter direction and comes into close contact with the edges of the internal wiring 57 and the internal wiring hole 554, thereby preventing water from entering the power supply case 53 from the outside through the third gap G3. The sealing member 54, having the first sealing portion 541, the second sealing portion 542, and the third sealing portion 543 as described above, seals the gap formed in the power supply case 53, thereby making the power supply case 53 waterproof.

[0025] Next, we will describe the path by which radio signals, including control signals for controlling the power supply board 51, are transmitted from the outside to the inside of the power supply case 53. As shown in Figure 12, the power supply case 53 has a first air gap G1 formed between the cylindrical end portion 532, which is the outer edge of the opening at the end of the cylindrical portion 531, and the end plate side portion 551, and a second air gap G2 formed in the power supply wire hole 553 of the end plate side portion 551. The first sealing portion 541 and the second sealing portion 542 of the sealing member 54 seal the first air gap G1 and the second air gap G2, respectively. However, since the sealing member 54 is a radio wave transparent material, radio wave signals, including control signals for controlling the power supply board 51, are transmitted from the outside to the inside of the power supply case 53 through a first path L1 that passes through the first air gap G1, which does not exist in the physical power supply case 53 and is sealed by the radio wave transparent first sealing portion 541, or through a second path L2 that passes through the second air gap G2, which does not exist in the physical power supply case 53 and is sealed by the second sealing portion 542, and are received by the receiving unit 62 of the wireless unit 60. Similarly, the first sealing part 541 and the third sealing part 543 seal the first gap G1 and the third gap G3 formed in the internal wiring hole 554 of the end plate side portion 551 shown in Figure 13. However, since the sealing member 54 is a radio wave transparent material, radio wave signals including control signals for controlling the power supply board 51 are transmitted from the outside to the inside of the power supply case 53 through a first path L1 that passes through the first gap G1, which does not exist as a physical power supply case 53 and is sealed by the radio wave transparent first sealing part 541, or through a third path L3 that passes through the third gap G3, which does not exist as a physical power supply case 53 and is sealed by the third sealing part 543, and are received by the receiving part 62 of the wireless unit 60.

[0026] As described above, the lighting fixture 1 according to Embodiment 1 includes a power supply board 51 that supplies power to the light-emitting unit 23, a receiving unit 62 that receives radio wave signals including control signals for controlling the power supply board 51, a power supply case 53 in which the power supply board 51 and the receiving unit 62 are housed and which has a gap in its wall surface that connects the inside and outside, and a sealing member 54 that is radio wave transparent and seals the gap. As a result, the sealing member 54 seals the gap in the power supply case 53, preventing rainwater from entering the power supply case, and the radio wave transparent sealing member 54 transmits radio wave signals, so that the power supply case 53 has a waterproof structure and the receiving unit 62 housed in the power supply case 53 can receive radio wave signals.

[0027] In Embodiment 1, the end plate 55 is made of metal to ensure sufficient strength for fixing the connector case 574 to it. However, when fixing the connector case 574 to a component other than the end plate 55, such as a cylindrical portion 531, the end plate 55 is made of a radio wave transparent resin. By allowing radio wave signals, including control signals for controlling the power supply board 51, to pass through the radio wave transparent resin end plate 55, the receiving unit 62 housed in the power supply case 53 can more easily receive radio wave signals compared to when the end plate 55 is made of metal. [Explanation of Symbols]

[0028] 1 Lighting fixture, 10 Arm, 11 Horizontal arm section, 12 Mounting hole, 13 Vertical arm section, 15 Connection hole, 16 Nut, 17 Connecting member, 18 Light source unit, 19 Cover, 20 Lens, 23 Light-emitting section, 26 Heat sink, 27 Fin, 31 Base, 32 Flat base section, 34 Wiring insertion hole, 35 Side base section, 351 Lower base side section, 352 Upper base side section, 36 Bend base section, 37 Top plate fastening section, 38 Base side connecting member insertion hole, 39 Top plate, 40 Flat top plate section, 41 Heat dissipation hole, 42 Side top plate section, 43 Bend top plate section, 44 Top plate fastening hole, 45 Top plate side connecting member insertion hole, 46 Support bracket, 47 Bottom support bracket section, 48 Top support bracket section, 49 Side support bracket section, 50 Power supply unit, 51 Power supply board, 511 Power supply board connector, 52 Case bottom, 53 Power supply case, 531 Cylindrical part, 532 End of cylindrical part, 54 Sealing member, 541 First sealing part, 542 Second sealing part, 543 Third sealing part, 544 Sealing member projection, 55 End plate, 551 Side part of end plate, 552 Bottom part of end plate, 553 Hole for power supply wire, 554 Hole for internal wiring, 56 Power supply wire, 57 Internal wiring, 571 Relay connector, 572 First internal wiring, 573 Second internal wiring, 574 Connector case, 575 Connector packing, 58 Connector cover, 60 Wireless unit, 61 Outer enclosure, 611 First outer enclosure part, 612 Second outer enclosure part, 613 Locking part, 614 Outer enclosure mounting hole, 615 Outer enclosure mounting part, 62 Receiving unit, 621 Wireless circuit board, 622 antenna, 623 antenna connector, 65 harness.

Claims

1. A light-emitting part that emits light when power is supplied, A power supply board that supplies power to the light-emitting section, A receiving unit that receives radio signals including control signals for controlling the power supply board, A power supply case in which the power supply board and the receiving unit are housed, and a gap is formed in the wall surface that connects the inside and outside, A sealing member that has radio wave transparency and seals the gap, Equipped with lighting fixtures.

2. The power supply case has a cylindrical portion with an opening formed at its end, with the end of the cylindrical portion as its outer edge, and an end plate that covers the opening of the cylindrical portion and has a gap formed between it and the end of the cylindrical portion. The sealing member has electrical insulating properties and is disposed between the end of the cylindrical portion and the end plate of the cylindrical portion. The receiving unit is attached to the sealing member, as described in claim 1.

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