Lighting device

Abstract

To provide a lighting device which can improve the quality of radio communication.SOLUTION: An apparatus main body 11 is formed into a metal-made long-length box shape, and has an opening part 19 at one face. A light source unit 12 has a long-length metal-made chassis 46 which is detachably attached to the apparatus main body 11, and arranged in the opening part 19, a light source 47 arranged at the chassis 46, and a translucent cover 48 for covering the light source 47, and attached to the chassis 46. A width of the chassis 46 in a short direction intersecting with a longitudinal direction is narrower than a width of the opening part 19 of the apparatus main body 11 in the short direction, a clearance 70 is formed between both-side parts of the chassis 46 in the short direction and both-side parts of the apparatus main body 11 in the short direction, and the clearance 70 is covered with the translucent cover 48. A radio communication unit 28 is arranged in a position which is shifted to one side from a center of the apparatus main body 11 in the short direction between the inside of the apparatus main body 11 and the chassis 46 of the light source unit 12.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] SUMMARY OF THE DISCLOSURE The present invention relates to a lighting device. [Background technology]

[0002] Conventionally, lighting devices equipped with a wireless unit have been known. In such lighting devices, a notch or the like is provided on a side portion of a metal fixture body to place the wireless unit, thereby improving the quality of wireless communication by the wireless unit. However, it is desired to improve the quality of wireless communication without providing a notch or the like on the fixture body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-191217 A Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a lighting device capable of improving wireless communication quality. [Means for solving the problem]

[0005] The lighting device of the embodiment includes a fixture body, a light source unit, and a wireless communication unit. The fixture body is a long metal box having an opening on one side. The light source unit includes a long metal chassis detachably attached to the fixture body and disposed in the opening, a light source disposed in the chassis, and a translucent cover attached to the chassis to cover the light source. The width of the chassis in a short side direction intersecting the longitudinal direction is smaller than the width of the opening of the fixture body in the short side direction, and a gap is provided between both sides of the chassis in the short side direction and both sides of the fixture body in the short side direction, and the gap is covered with the translucent cover. The wireless communication unit is disposed between the inside of the fixture body and the chassis of the light source unit at a position shifted to one side from the center in the short side direction of the fixture body. Effect of the Invention

[0006] According to the embodiment, improvement in wireless communication quality can be expected. [Brief description of the drawings]

[0007] [Figure 1] 1 is a perspective view of an illumination device showing an embodiment. [Diagram 2] FIG. [Diagram 3] FIG. 2 is a schematic cross-sectional view of the above lighting device. [Figure 4] FIG. 2 is a bottom view of the fixture body of the lighting device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, an embodiment will be described with reference to the drawings.

[0009] 1 to 4 show a lighting device 10. The lighting device 10 is a long base light, and is a ceiling-mounted lighting device that is installed on an installation surface, such as a ceiling surface.

[0010] The lighting device 10 includes a long fixture body 11 that is installed on a ceiling surface, and a long light source unit 12 that is detachably attached to the underside of the fixture body 11.

[0011] The device body 11 is made of metal and is formed long. The device body 11 is formed in a long and narrow box shape having a long base surface portion 15 which is a top plate, a side surface portion 16a provided on one side in a short direction (width direction) intersecting the longitudinal direction of the base surface portion 15, a side surface portion 16b provided on the other side, and end surface portions 17 provided on both ends in the longitudinal direction of the base surface portion 15 and the side surface portions 16a, 16b. A storage portion 18 which is a storage space is formed inside the device body 11, and a long opening portion 19 is formed on the lower surface side facing the base surface portion 15 (the surface opposite to the base surface portion 15) between the side surfaces 16a, 16b and the end surface portion 17.

[0012] A wiring hole 20 for inserting a power line is provided at one longitudinal end of the base surface portion 15. A plurality of mounting holes 21, such as elongated holes, for mounting to hanging bolts protruding from a ceiling structure are provided near both longitudinal ends of the base surface portion 15.

[0013] The lower edges of the side surface portions 16a, 16b and the lower edge of the end surface portion 17 are provided with mounting edges 22 to which the upper surface side of the light source unit 12 abuts and is attached.

[0014] In the device body 11, a terminal block 24, a power supply unit 25, a first spring receiving metal fitting 26, a second spring receiving metal fitting 27, and a wireless communication unit 28 are attached.

[0015] The terminal block 24 is disposed on one end side of the base surface portion 15 of the fixture body 11 in the longitudinal direction and closer to the center of the base surface portion 15 in the longitudinal direction than the wiring hole 20 and the mounting hole 21. A power line drawn from the outside into the fixture body 11 through the wiring hole 20 is electrically connected to the terminal block 24. The power line supplies AC power, which is external power from, for example, a commercial AC power source. The terminal block 24 is electrically connected to the power supply unit 25 by a power input line wired along the inside of the fixture body 11.

[0016] The terminal block 24 is disposed at a position shifted to one side from the center in the short side direction of the fixture body 11, while the wireless communication unit 28 is disposed at a position shifted to the other side from the center in the short side direction of the fixture body 11, which is the opposite side. The power input line connected to the terminal block 24 passes between the wireless communication unit 28 disposed at a position shifted to one side in the short side direction of the fixture body 11 and the side surface portion 16b on the other side of the fixture body 11, and is wired along the side surface portion 16b on the other side of the fixture body 11.

[0017] The power supply unit 25 is provided long and is disposed in the center of the longitudinal direction of the base surface portion 15 of the fixture body 11 along the longitudinal direction of the fixture body 11. The power supply unit 25 is, for example, an AC-DC converter, and converts AC power supplied from a commercial AC power source through the terminal block 24 and the power input line into a predetermined lighting power such as DC power, and supplies it to the light source provided in the light source unit 12. Furthermore, the power supply unit 25 converts AC power into a predetermined operating power such as DC power, and supplies it to the wireless communication unit 28.

[0018] An input terminal section 30 to which a power input line from the terminal block 24 is connected is provided at one end of the power supply unit 25. A light source terminal section 31 that outputs lighting power to the light source unit 12, and a wireless terminal section 32 that outputs operating power to the wireless communication unit 28 and enables mutual signal transmission are provided at the other end of the power supply unit 25.

[0019] The power supply unit 25 supplies lighting power to the light source unit 12 through a power supply side lighting power supply line connected to the light source terminal portion 31, and also supplies operating power to the wireless communication unit 28 through a wireless connection line connected to the wireless terminal portion 32, enabling mutual communication.

[0020] The power supply unit 25 has a control unit, which controls a power supply circuit that generates lighting power and operating power, and controls communication with the wireless communication unit .

[0021] The power supply unit 25 has a power supply board on which a power supply circuit, a control section, and terminal sections 30, 31, and 32 are mounted, covered by a metal power supply case 33.

[0022] The first spring receiving fitting 26 is made of metal and is disposed at one end in the longitudinal direction of the base surface portion 15. The first spring receiving fitting 26 has a spring receiving portion 35 that protrudes from the end surface portion 17 on the one end side toward the center of the fixture body 11 in the longitudinal direction.

[0023] The second spring receiving fitting 27 is made of metal, and is disposed at the other end side of the base surface portion 15 in the longitudinal direction at a predetermined distance from the end surface portion 17 of the instrument body 11. The second spring receiving fitting 27 has a spring receiving portion 36 that protrudes downward from the base surface portion 15 substantially perpendicularly.

[0024] The wireless communication unit 28 performs wireless communication using a communication method conforming to a standard such as Wi-Fi (registered trademark) or Bluetooth (registered trademark). The wireless communication unit 28 transmits and receives wireless signals using radio waves as a medium between a terminal capable of wireless communication, such as a remote control, a smartphone, a tablet, or a personal computer, and an external device, such as another lighting device 10. The provision of the wireless communication unit 28 enables control such as group control or scene control, in which light is adjusted according to a scene for each group made up of a plurality of lighting devices 10.

[0025] The wireless communication unit 28 receives operating power from the power supply unit 25 through a wireless connection line connected between the power supply unit 25, and is capable of communicating with the power supply unit 25, sending and receiving wireless signals between the power supply unit 25 and external devices.

[0026] The wireless communication unit 28 is accommodated in the accommodation section 18 of the instrument body 11 and attached to the lower surface side of the base surface section 15 by screwing or the like. The wireless communication unit 28 is disposed between the terminal block 24 and the power supply unit 25 at one end side of the instrument body 11 in the longitudinal direction. Furthermore, the wireless communication unit 28 is disposed at a position shifted so as to be closer to the side surface section 16a on one side than the center in the lateral direction of the instrument body 11. In other words, the wireless communication unit 28 is disposed so that the distance between the wireless communication unit 28 and the side surface section 16a on one side of the instrument body 11 is narrower than the distance between the wireless communication unit 28 and the side surface section 16b on the other side of the instrument body 11. The wireless communication unit 28 is disposed at a position closer to the side surface section 16a on one side of the instrument body 11 than the power supply unit 25.

[0027] The wireless communication unit 28 includes a wireless housing 40 and a wireless communication circuit board 41 that is the main body of the wireless communication unit housed in the wireless housing 40.

[0028] The wireless housing 40 is made of resin and formed in a rectangular parallelepiped or cubic shape. The wireless housing 40 has a step portion 42, which is a recessed portion cut out in a concave shape, at a corner formed by a surface (front or bottom surface) opposite the base surface portion 15 of the device body 11 and facing the light source unit 12, and a side surface facing one side of the device body 11, the side surface.

[0029] The wireless communication circuit board 41 is provided with a wireless communication circuit for wireless communication, an antenna 43 connected to the wireless communication circuit for transmitting and receiving wireless signals, a control unit for controlling the wireless communication circuit to communicate with the power supply unit 25, and a connector 44 to which a wireless connection line between the power supply unit 25 and the connector 44 is connected. The connector 44 is disposed to face the wireless terminal portion 32 of the power supply unit 25. The antenna 43 is long and disposed in the width direction of the wireless communication circuit board 41 which corresponds to the short side direction of the device body 11.

[0030] The light source unit 12 also includes a long chassis 46, a light source 47 attached to the underside of the chassis 46, a translucent cover 48 attached to the chassis 46 and covering the light source 47, end covers 49 attached to both longitudinal ends of the translucent cover 48, and a first mounting spring 50 and a second mounting spring 51 arranged on the upper side of the chassis 46.

[0031] The chassis 46 is made of metal and is long. The chassis 46 includes a long light source attachment portion 53, rising portions 54 that rise upward from both short side portions of the light source attachment portion 53, and bent portions 55 that are bent outward in an arc shape from the upper end of the rising portions 54.

[0032] The light source 47 is configured by a light source module having a long substrate 57 and a plurality of light emitting elements 58 mounted on the front side of the substrate 57 along the longitudinal direction. The substrate 57 is attached to the chassis 46 so that the rear side faces the lower side of the chassis 46. The light emitting elements 58 are semiconductor light emitting elements such as LEDs and organic EL. One end of a lighting power supply line on the unit side is electrically connected to the light source 47, and the other end of the lighting power supply line on the unit side is pulled out to the outside of the light source unit 12 and can be connected to a lighting power supply line on the power source side pulled out from the fixture body 11 via a connector.

[0033] The light-transmitting cover 48 is made of a resin through which radio waves can pass, has light-transmitting properties and light-diffusing properties, and transmits light from the light-emitting element 58. The light-transmitting cover 48 is formed so that its cross-sectional shape in the width direction has a convex curved shape facing forward.

[0034] A cover opening 60 in which the light source 47 is disposed in the widthwise central region is formed along the longitudinal direction on the upper surface side of the light-transmitting cover 48. In addition, on both sides of the cover opening 60 in the widthwise direction on the upper surface side of the light-transmitting cover 48, abutting portions 61 that can abut against the mounting edge portions 22 that are the lower portions of the side portions 16a, 16b on both sides of the device body 11, and a positioning portion 62 that protrudes upward from the abutting portion 61 and is inserted into the inside of the opening 19 of the device body 11 in the short direction to position the device body 11 are formed along the longitudinal direction. In addition, on the upper surface side of the light-transmitting cover 48, a lower engaging portion 63 that engages with the lower surface side of the chassis 46 and an upper engaging portion 64 that has a substantially L-shaped cross section that engages with the bent portion 55 of the rising portion 54 of the chassis 46 are provided along the longitudinal direction at a position closer to the widthwise central side than the abutting portions 61 and the positioning portions 62.

[0035] The end cover 49 is made of a resin through which radio waves can pass, but may be either non-translucent or translucent. The end cover 49 is attached to an end of the translucent cover 48 held by the chassis 46, and holds the translucent cover 48 to the chassis 46.

[0036] The first mounting spring 50 is attached by a mounting member to an end portion on one end side in the longitudinal direction of the chassis 46. The first mounting spring 50 is formed of, for example, a torsion spring, and is disposed with its tip side facing toward the one end side in the longitudinal direction of the chassis 46.

[0037] The second mounting spring 51 is attached by a mounting member near the other end side in the longitudinal direction of the chassis 46. The second mounting spring 51 is formed of, for example, a torsion spring, and is arranged with its tip side facing the other end side in the longitudinal direction of the chassis 46.

[0038] To attach the light source unit 12 to the fixture body 11, one end of the light source unit 12 is brought close to one end of the fixture body 11, and the first mounting spring 50 is moved from the center side to the one end side of the fixture body 11 in the longitudinal direction to engage the first mounting spring 50 with the first spring receiving metal fitting 26, and then the other end of the light source unit 12 is brought close toward the other end of the fixture body 11, and the second mounting spring 51 is engaged with the second spring receiving metal fitting 27, and the other end of the light source unit 12 is pushed up, so that the light source unit 12 is pulled up and attached to the fixture body 11 by the action of the spring force of the second mounting spring 51, and the attached state is maintained. Note that the second spring receiving metal fitting 27 and the second mounting spring 50 may be used instead of the first spring receiving metal fitting 26 and the first mounting spring 50.

[0039] As shown in FIG. 3, when the light source unit 12 is attached to the fixture body 11, the chassis 46 of the light source unit 12 is disposed in the opening 19 of the fixture body 11.

[0040] The short-side width of the chassis 46 is smaller than the short-side width of the opening 19 of the fixture body 11 (the width between the side portions 16a, 16b on both sides), and gaps 70 are formed between both short-side portions of the chassis 46 and both side portions 16a, 16b on both sides of the fixture body 11, and these gaps 70 are covered with a translucent cover 48 made of resin.

[0041] The wireless communication unit 28 is disposed between the inside of the fixture body 11 and the chassis 46 of the light source unit 12, surrounded on six sides by metal surfaces, and radio waves can pass through the gaps 70, through which the wireless communication unit 28 communicates wirelessly with external devices.

[0042] The wireless communication unit 28 is disposed at a position shifted toward one side surface portion 16a from the center in the short side direction of the fixture body 11. In other words, the wireless communication unit 28 is disposed toward one side gap 70 between one side of the fixture body 11 and one side of the chassis 46, and at least a part of the antenna 43 of the wireless communication unit 28 faces the gap 70.

[0043] In this way, the wireless communication unit 28 is positioned at a position shifted closer to one side portion 16a than the center in the short direction of the fixture body 11, so that the radio waves of the wireless signal emitted from the antenna 43 of the wireless communication unit 28 can easily pass through the resin translucent cover 48 through the gap 70 and exit to the outside, and the radio waves that pass through the resin translucent cover 48 and the gap 70 from the outside to enter between the inside of the fixture body 11 and the chassis 46 of the light source unit 12 can easily be received by the antenna 43 of the wireless communication unit 28.

[0044] Therefore, the lighting device 10 communicates wirelessly through the gap 70 between the fixture body 11 and the chassis 46, and by bringing the wireless communication unit 28 closer to the gap 70, the radio wave strength is improved, and the wireless communication quality can be improved without having to provide a cutout or the like for wireless communication in the fixture body 11.

[0045] Moreover, by facing the gap 70 to the antenna 43 of the wireless communication unit 28, the radio wave intensity becomes higher, and the wireless communication quality can be further improved.

[0046] The antenna 43 is disposed on the wireless communication circuit board 41 along the short side of the device body 11, but may be disposed along the long side of the device body 11 on one side facing the stepped portion 42 of the wireless communication unit 28. In this case, substantially the entire antenna 43 faces the gap 70, which increases the radio wave intensity and improves the wireless communication quality.

[0047] Furthermore, the power supply unit 25 and the wireless communication unit 28 may be disposed in the light source unit 12. When the wireless communication unit 28 is disposed on the upper surface side of the chassis 46 of the light source unit 12, it is preferable that the antenna 43 of the wireless communication unit 28 is disposed in a position protruding toward the base surface portion 15 of the fixture body 11 beyond the chassis 46. With this arrangement, radio waves traveling from the wireless communication unit 28 to the gap 70 or from the gap 70 to the wireless communication unit 28 are less likely to be blocked by the chassis 46, thereby improving the quality of wireless communication.

[0048] The fixture body 11 may have a so-called inverted Fuji shape in which reflective surfaces are provided on both side surfaces 16a, 16b. The lighting device 10 may be a recessed lighting device that is recessed into the ceiling surface.

[0049] Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0050] 10. Lighting Equipment 11. Equipment body 12 Light source unit 19 Opening 28 Wireless Communication Unit 43 Antenna 46 Chassis 47 Light source 48 Translucent cover 70 Gap

Claims

1. A metal device body having a long box shape with an opening on one side; a light source unit including a long metallic chassis detachably attached to the device body and placed in the opening, a light source arranged on the chassis, and a translucent cover attached to the chassis to cover the light source, the width of the chassis in a short side direction intersecting with a longitudinal direction being smaller than the width of the opening of the device body in the short side direction, a gap being provided between both sides of the chassis in the short side direction and both sides of the device body in the short side direction, and the gap being covered with the translucent cover; a wireless communication unit disposed between the inside of the fixture body and the chassis of the light source unit at a position shifted to one side from the center in a short side direction of the fixture body; A lighting device comprising:

2. The wireless communication unit has an antenna, and the antenna faces the gap.

2. The lighting device according to claim 1 .

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