Lighting devices and lighting fixtures

Abstract

To provide an illuminating device and a luminaire that can improve workability of assembly work.SOLUTION: A light source unit comprises an LED module 1, a power supply device 2 for supplying power to the LED module 1, a radio communication part 3, and a fitting member 4. The radio communication part 3 performs at least one of transmission or reception of a radio signal using an electromagnetic wave as a medium. In the fitting member 4, the LED module 1 is attached to a first surface 40A, and the power supply device 2 is attached to a second surface 40B opposite to the first surface 40A. The power supply device 2 comprises: a lighting circuit 21 for controlling lighting power; and a case 20 comprising a first opening part 204 in a region corresponding to the radio communication part 3, and housing the lighting circuit 21 and the radio communication part 3.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present disclosure relates to a lighting device and a lighting fixture, and more particularly to a lighting device and a lighting fixture having a function of wireless communication using electromagnetic waves as a medium.

Background Art

[0002] As a conventional example, a lighting fixture described in Patent Document 1 is exemplified. The lighting fixture described in Patent Document 1 includes an LED module, a lighting circuit that controls lighting of the LED module, and a wireless communication unit that is connected to the lighting circuit and performs wireless communication with other lighting fixtures or lighting control devices.

[0003] The wireless communication unit has a wireless communication module board and a wireless communication unit case that houses the wireless communication module board. The wireless communication unit case is fixed to the sheet metal of the lighting fixture with screws.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] By the way, in the above conventional example, the wireless communication unit (wireless communication unit case) and the lighting circuit have a completely independent structure. Therefore, since the lighting circuit and the wireless communication unit are separately attached to the sheet metal of the lighting fixture, the assembly work of the lighting fixture (lighting device) is troublesome.

[0006] An object of the present disclosure is to provide a lighting device and a lighting fixture capable of improving the workability of the assembly work.

Means for Solving the Problems

[0007] A lighting device according to one aspect of the present disclosure comprises a light source, a power supply device that supplies lighting power to the light source, a wireless communication unit, and a mounting member. The wireless communication unit transmits or receives wireless signals using electromagnetic waves as a medium at least one of the two. The mounting member has the light source mounted on a first surface and the power supply device mounted on a second surface opposite to the first surface. The power supply device comprises a lighting circuit that controls the lighting power, and a case having a first opening in a portion corresponding to the wireless communication unit, and housing the lighting circuit and the wireless communication unit. The case includes a case-side cover member formed of an electrically insulating material that closes the first opening.

[0008] A lighting fixture according to one aspect of this disclosure comprises a lighting device and a fixture body that supports the lighting device. [Effects of the Invention]

[0009] The lighting device and lighting fixture described herein have the effect of improving the workability of assembly work. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a perspective view of a lighting fixture according to an embodiment of this disclosure. [Figure 2] Figure 2 is an exploded perspective view of the same lighting fixture and a light source unit which is a lighting device according to the present disclosure. [Figure 3] Figure 3 is a circuit block diagram of the same light source unit. [Figure 4] Figure 4 is a cross-sectional view of the same light source unit with the cover removed. [Figure 5] Figure 5 is a partially omitted cross-sectional view of the same light source unit with the cover removed. [Figure 6] Figure 6 is a front view of the fixture body of the same lighting fixture and the power supply unit of the same light source unit. [Figure 7] Figure 7 is a cross-sectional view of the same light source unit, with the mounting member and wireless communication section partially omitted. [Figure 8]Figure 8 is a cross-sectional view of the same light source unit, with the mounting member, wireless communication unit, and case partially omitted. [Figure 9] Figure 9 is a cross-sectional view of a modified example 1 of the light source unit according to the embodiment, with a portion of the mounting member and power supply unit omitted. [Figure 10] Figure 10 is a cross-sectional view of a modified example of Modification 1, with some parts of the mounting member and power supply unit omitted. [Figure 11] Figure 11A is a cross-sectional view of a modified example 2 of the light source unit according to the embodiment, with some parts of the mounting member and power supply unit omitted. Figure 11B is a cross-sectional view of the modified example 2, with some parts of the mounting member and power supply unit omitted. [Figure 12] Figure 12A is a cross-sectional view of a modified example 3 of the light source unit according to the embodiment, with the mounting member and power supply unit partially omitted. Figure 12B is a cross-sectional view of the modified example 3, with the mounting member and power supply unit partially omitted. [Figure 13] Figure 13 is a cross-sectional view of a modified example 4 of the light source unit according to the embodiment, with a portion of the mounting member and power supply unit omitted. [Figure 14] Figure 14A is a cross-sectional view of a modified example 5 of the light source unit according to the embodiment, with some parts of the mounting member and power supply unit omitted. Figure 14B is a cross-sectional view of a modified example 5, with some parts of the mounting member and power supply unit omitted. [Figure 15] Figure 15 is a partially omitted front view of the power supply unit in a modified example 6 of the light source unit according to the embodiment. [Figure 16] Figure 16 is a partially omitted front view of the power supply unit in a modified example 7 of the light source unit according to the embodiment. [Figure 17] Figure 17 is a partially omitted front view of the power supply unit in a modified example 8 of the light source unit according to the embodiment. [Figure 18]FIG. 18A is a cross-sectional view of a mounting member and a partial power supply device in another modification of the light source unit according to the embodiment, with some parts omitted. FIG. 18B is a cross-sectional view of a mounting member and a partial power supply device in another modification of the light source unit according to the embodiment, with some parts omitted. FIG. 18C is a cross-sectional view of a mounting member and a partial power supply device in another modification of the light source unit according to the embodiment, with some parts omitted. FIG. 18D is a cross-sectional view of a mounting member and a partial power supply device in another modification of the light source unit according to the embodiment, with some parts omitted.

MODE FOR CARRYING OUT THE INVENTION

[0011] Hereinafter, the lighting device and the lighting fixture according to the embodiments of the present disclosure will be described in detail with reference to the drawings. However, each drawing described in the following embodiments is a schematic diagram, and the ratio of the size and thickness of each component does not necessarily reflect the actual dimensional ratio. Note that the configuration described in the following embodiments is merely an example of the present disclosure. The present disclosure is not limited to the following embodiments, and various modifications can be made according to the design and the like as long as the effects of the present disclosure can be achieved.

[0012] (1) Overview The lighting device (light source unit A1) according to the embodiment includes a light source (LED module 1), a power supply device 2 that supplies lighting power to the light source (LED module 1), a wireless communication unit 3, and a mounting member 4 (see FIGS. 1 and 2).

[0013] The wireless communication unit 3 performs at least one of transmitting or receiving a wireless signal using an electromagnetic wave as a medium. In the present embodiment, the electromagnetic wave used by the wireless communication unit 3 as a medium may be a radio wave or an electromagnetic wave other than a radio wave such as infrared light and visible light.

[0014] The mounting member 4 has an LED module 1 attached to its first surface 40A, and a power supply unit 2 attached to its second surface 40B, opposite to the first surface 40A (see Figure 4). The power supply unit 2 includes a lighting circuit 21 that controls the lighting power, and a case 20 that houses the lighting circuit 21 and the wireless communication unit 3 (see Figures 3 and 4). The case 20 has a first opening 204 in the part of the case 20 corresponding to the wireless communication unit 3 (the entire bottom surface of the case 20 in the example of Figures 4 and 5).

[0015] In conventional designs, the wireless communication unit case housing the wireless communication unit and the case housing the lighting circuit were completely separate structures. Therefore, the lighting circuit and wireless communication unit had to be attached separately to the sheet metal of the lighting fixture, making the assembly process of the lighting fixture (lighting device) time-consuming.

[0016] In contrast, in the lighting device (light source unit A1) according to this embodiment, the lighting circuit 21 and the wireless communication unit 3 are housed in the case 20 of the power supply unit 2, so the installation of the lighting circuit 21 and the wireless communication unit 3 to the mounting member 4 is completed by attaching the case 20 to the mounting member 4. As a result, the lighting device (light source unit A1) according to this embodiment can improve the workability of the assembly work compared to the conventional example. Moreover, in the lighting device (light source unit A1) according to this embodiment, the case 20 has a first opening 204 in the part of the case 20 corresponding to the wireless communication unit 3, so the attenuation of the wireless signal received or transmitted by the wireless communication unit 3 can be suppressed.

[0017] Furthermore, the lighting fixture B1 according to this embodiment comprises a lighting device (light source unit A1) and a fixture body 9 that supports the lighting device (light source unit A1) (see Figures 1 and 2).

[0018] However, the lighting fixture B1 according to this embodiment can improve the workability of the assembly process compared to the conventional example.

[0019] (2)Details (2-1) Lighting fixtures First, the lighting fixture B1 according to the embodiment (hereinafter referred to as lighting fixture B1) will be described.

[0020] As shown in Figures 1 and 2, the lighting fixture B1 comprises a lighting device according to the embodiment, namely a light source unit A1 (hereinafter abbreviated as light source unit A1) and a fixture body 9 that supports the light source unit A1. The light source unit A1 is detachably attached to the fixture body 9 which is directly attached to the ceiling. However, the fixture body 9 may be embedded in the ceiling. Alternatively, the fixture body 9 may be directly attached to the wall or embedded in the wall.

[0021] The main body of the device 9 comprises a long, box-shaped housing section 90 with an open bottom, a pair of reflectors 91 projecting diagonally upward from the open edges on both sides along the longitudinal direction of the housing section 90, and a pair of end plates 92 provided at both ends of the housing section 90 and the pair of reflectors 91 in the longitudinal direction (see Figure 2). The housing section 90 and the pair of reflectors 91 are integrally formed by punching and bending metal plates.

[0022] The fixture body 9 is installed on the ceiling by inserting suspension bolts (not shown) through at least two of the multiple mounting holes 900 provided on the bottom surface of the housing 90, and tightening nuts (not shown) onto these suspension bolts. In addition, a power line is inserted through one of the multiple power supply holes 901 provided on the bottom surface of the housing 90. However, if multiple lighting fixtures B1 are installed, another power line for daisy-chaining may be inserted through a different power supply hole 901.

[0023] A terminal block 902 is mounted on the bottom surface of the housing 90. The terminal block 902 is electrically connected to the power cable 903. A male power connector 904 is provided at the end of the power cable 903.

[0024] However, the power line inserted through the power hole 901 of the fixture body 9 is electrically connected to the terminal block 902, and via the terminal block 902, power cable 903, and power connector 904, is electrically connected to the power supply unit 2 of the light source unit A1 (specifically, the power terminal section 22 described later).

[0025] (2-2) Light source unit The light source unit A1 comprises an LED module 1, a power supply unit 2, a wireless communication unit 3, a mounting member 4, and a cover 7 (see Figure 2).

[0026] (2-2-1) LED module LED module 1 comprises a number of LEDs 10 and a substrate 11. The substrate 11 is formed in the shape of a long rectangular plate. The number of LEDs 10 are mounted in a single row at equal intervals along the longitudinal direction of the substrate 11, in the center of the short side on the surface (bottom surface) of the substrate 11 (see Figure 2).

[0027] (2-2-2) Mounting components The mounting member 4 is made of metal. More specifically, the mounting member 4 is formed into a long rectangular trough shape by processing a metal plate (for example, a steel plate). The strength of the mounting member 4 can be ensured by making the mounting member 4 out of metal. The mounting member 4 may also be made of resin. The mounting member 4 has a long rectangular base plate 40 and a pair of side plates 41 that rise upward from both ends along the longitudinal direction of the base plate 40. The LED module 1 is attached to the lower surface (first surface 40A) of the base plate 40 by a plurality of claws 42 that are cut out from the base plate 40 (see Figures 4 and 5).

[0028] (2-2-3) Cover The cover 7 is formed in a semi-cylindrical shape from a translucent synthetic resin such as acrylic resin or polycarbonate resin (see Figure 2). The cover 7 also has a pair of protruding walls 70 that project upward along its longitudinal direction. The cover 7 houses the mounting member 4 between the pair of protruding walls 70, and is attached to the mounting member 4 by hooking the tips (upper ends) of the pair of side plates 41 of the mounting member 4 with the hooks formed on the tips (upper ends) of the pair of protruding walls 70. The cover 7 may also be made of inorganic glass such as quartz glass.

[0029] (2-2-4) Power supply device The power supply unit 2 includes a lighting circuit 21 and a case 20 that houses the lighting circuit 21 (see Figure 2).

[0030] The lighting circuit 21 includes a printed circuit board 25 on which wiring conductors are printed on a rectangular insulating substrate, and a plurality of circuit components 26 mounted on both the front and back surfaces of the printed circuit board 25 (see Figure 2). In other words, the lighting circuit 21 is composed of printed circuits.

[0031] Figure 3 shows the circuit configuration of the lighting circuit 21. The lighting circuit 21 includes a power conversion circuit 210, a constant current circuit 211, a control circuit 212, and the like.

[0032] The power conversion circuit 210 includes, for example, a rectifier circuit such as a diode bridge, a boost chopper circuit (power factor correction circuit), and the like. The power conversion circuit 210 converts AC power supplied from an external power supply P1 through the power supply terminal section 22 into DC power. The external power supply P1 is, for example, a commercial power grid that supplies AC voltage and AC current with an effective value of 100V or 200V. However, the power conversion circuit 210 may be equipped with a switching power supply circuit having a power factor correction function, such as a buck chopper circuit, a buck-boost chopper circuit, or a flyback converter, instead of a boost chopper circuit.

[0033] The constant current circuit 211 includes, for example, a buck converter. The constant current circuit 211 steps down the DC voltage output from the power conversion circuit 210 and applies it to the LED module 1, and also adjusts the DC current flowing through the LED module 1. However, the constant current circuit 211 may be equipped with various chopper circuits, series regulators, etc., instead of a buck converter.

[0034] The control circuit 212 includes, for example, a microcontroller. The control circuit 212 controls the power conversion circuit 210 to maintain its output voltage at a constant DC voltage. Furthermore, the control circuit 212 controls the step-down chopper circuit of the constant current circuit 211 to match the DC current supplied from the constant current circuit 211 to the LED module 1 to a target value. The control circuit 212 also changes the target value of the DC current supplied to the LED module 1 in response to a dimming signal received from the wireless communication unit 3 via the signal connector 5.

[0035] Here, the power terminal section 22 is mounted on one end of the printed circuit board 25 in the longitudinal direction (see Figures 2 and 5). In this embodiment, the power terminal section 22 is a connector to which the power connector 904 is inserted and removed, but instead of the power connector 904, it may be a terminal block to which the conductors of an electric wire are electrically connected. Alternatively, the power terminal section 22 may be an output wire drawn from the lighting circuit 21 and may be soldered to the conductor of the power cable 903. Note that the configuration of the power terminal section 22 also includes configurations other than those described above. Furthermore, the socket 50 of the signal connector 5 is mounted on the other end of the printed circuit board 25 in the longitudinal direction (see Figure 5). However, in Figures 4 and 5, the circuit components mounted on the front (bottom) and back (top) surfaces of the printed circuit board 25 are not shown.

[0036] The case 20 is made of metal. More specifically, the case 20 is formed in a box shape (for example, a rectangular box shape) having a first opening 204 in the part corresponding to the wireless communication unit 3 inside the case 20 by processing a metal plate (for example, a steel plate). By making the case 20 out of metal, the strength of the case 20 can be ensured, the various circuit boards inside the case 20 can be protected from external noise, and the diffusion of noise from the various circuit boards inside the case 20 to the outside can be suppressed. The case 20 may also be made of resin.

[0037] Case 20 has a rectangular ceiling wall 200 and a pair of first side walls 201 formed along the short direction of the ceiling wall 200 from both ends in the longitudinal direction of the ceiling wall 200 and projecting downward. Case 20 also has a pair of second side walls 202 formed along the longitudinal direction of the ceiling wall 200 from both ends in the short direction of the ceiling wall 200 and projecting downward (see Figures 4 and 5). In other words, Case 20 is formed in the shape of a long box with a first opening 204 in front of (below) the ceiling wall 200. To put it another way, in addition to the ceiling wall 200 and the four side walls (first side walls 201 and second side walls 202), Case 20 has a bottom wall 203 facing the ceiling wall 200 and surrounded by the four side walls, and is formed in the shape of a box with the first opening 204 throughout the bottom wall 203. The first opening 204 is provided across the entire bottom wall 203 of the case 20 (i.e., the wall facing the mounting member 4). In other words, the entire bottom wall 203 of the case 20 facing the mounting member 4 is opened by the first opening 204. Note that the first opening 204 is not limited to the entire bottom wall 203 of the case 20 facing the mounting member 4, but may be an opening in a part of the bottom wall 203. In this embodiment, the first opening 204 is provided across the entire bottom wall 203 of the rectangular parallelepiped case 20, which faces the antenna 31 of the wireless communication unit 3, among the six wall sections (top wall 200, bottom wall 203, and four side walls (first side wall 201 and second side wall 202)). The bottom wall 203 is an example of the part of the case 20 corresponding to the wireless communication unit 3.

[0038] Furthermore, case 20 has a fixing piece 216 that protrudes outward from the tip of one of the second side walls 202 (see Figure 4). The fixing piece 216 is formed in the shape of a trough.

[0039] The case 20 houses the printed circuit board 25 of the lighting circuit 21 and the printed circuit board 32 of the wireless circuit section 30, which will be described later, side by side in the longitudinal direction (see Figure 5). The case 20 has a plurality of claws 205 cut out from a pair of second side walls 202 (see Figure 5). The case 20 supports the two printed circuit boards 25 and 32 by sandwiching them between these claws 205. The power terminal section 22 protrudes out of the case 20 through a window hole provided in one of the first side walls 201 (see Figure 5).

[0040] The power supply unit 2 is mounted on the upper surface (second surface 40B) of the mounting member 4 of the light source unit A1, such that the first opening 204 of the case 20 faces the mounting member 4 (see Figures 2 and 5). Specifically, the case 20 is fixed to the mounting member 4 by screwing one of the second side walls 202 and the fixing piece 216 to each side plate 41 of the mounting member 4. In addition, when mounted on the mounting member 4, the first opening 204 of the case 20 is closed by the bottom plate 40 of the mounting member 4 (see Figures 4 and 5).

[0041] (2-2-5) Wireless Communication Department The wireless communication unit 3 comprises a wireless circuit unit 30 and an antenna unit 31 (see Figure 3). The wireless circuit unit 30 comprises a printed circuit board 32 on which wiring conductors are printed on a rectangular insulating substrate, and circuit components 33 mounted on the printed circuit board 32 (see Figure 2). In other words, the wireless circuit unit 30 is composed of a printed circuit. A plug 51 of the signal connector 5 is mounted on the end of the printed circuit board 32 (see Figures 4 and 5). The plug 51 is mechanically and electrically connected to a socket 50 mounted on the printed circuit board 25 of the lighting circuit 21. The shape of the printed circuit board 25 is not limited to a rectangle, but includes various shapes such as polygons other than rectangles, circles, etc.

[0042] The antenna unit 31 is configured to emit electromagnetic waves (for example, radio waves in the 920 MHz band or 2.4 GHz band) into space and to receive electromagnetic waves from space. The antenna unit 31 is a so-called pattern antenna, for example, formed of a conductor printed on one of the main surfaces on both sides of the printed circuit board 32. However, the antenna unit 31 may be formed on a printed circuit board independent of the printed circuit board 32 of the wireless circuit unit 30. Furthermore, the antenna unit 31 is not limited to a pattern antenna, and may be a patch antenna (microstrip antenna), chip antenna, rod antenna, film antenna, etc.

[0043] The wireless circuit unit 30 extracts a wireless signal from electromagnetic waves received by the antenna unit 31, for example, radio waves in the 920 MHz band or the 2.4 GHz band, and acquires control information from the wireless signal. Furthermore, the wireless circuit unit 30 converts the control information into a dimming signal and transmits the converted dimming signal to the lighting circuit 21 (control circuit 212) via the signal connector 5.

[0044] The lighting circuit 21 controls the LED module 1 by changing the target value of the DC current supplied to the LED module 1 by the control circuit 212 in response to a dimming signal received from the wireless communication unit 3, thereby causing the LED module 1 to blink (switch between on and off) and dim.

[0045] As described above, the wireless communication unit 3 is housed together with the lighting circuit 21 in the case 20 of the power supply unit 2. Inside the case 20, the wireless communication unit 3 and the lighting circuit 21 are arranged parallel to the ceiling wall 200 of the case 20, and the antenna unit 31 of the wireless communication unit 3 faces the first opening 204 of the case 20. Here, the wireless signal transmitted from the remote control can reach the antenna unit 31 through the first opening 204 of the case 20, which opens downwards. Therefore, the light source unit A1 can suppress attenuation of the wireless signal reaching the antenna unit 31 even when the case 20 is made of metal.

[0046] (2-3) Installation of lighting fixtures Lighting fixture B1 is installed on the ceiling of the room using the following procedure.

[0047] First, the power wires drawn from the ceiling are routed through the power hole 901 of the fixture body 9 into the housing 90, and then the fixture body 9 is attached to the suspension bolts provided in the ceiling. Then, the power wires routed from the power hole 901 are electrically connected to the terminal block 902.

[0048] Next, after the power connector 904 of the power cable 903 is plugged into the power terminal section 22 of the power supply unit 2, the light source unit A1 is attached to the fixture body 9 so that the power supply unit 2 is housed in the housing section 90. Note that the mounting structure of the light source unit A1 to the fixture body 9 is conventionally known, so a detailed explanation and illustration are omitted.

[0049] The lighting fixture B1 is installed on the ceiling using the above procedure.

[0050] Here, the case 20 of the power supply unit 2 houses the power terminal section 22, the lighting circuit 21, and the wireless circuit section 30 in that order. More specifically, the case 20 houses the power terminal section 22, the lighting circuit 21, and the wireless circuit section 30, arranged in that order from one end to the other in the longitudinal direction of the case 20. Therefore, when the light source unit A1 is attached to the fixture body 9, the power terminal section 22 can be positioned near the terminal block 902 attached to the housing section 90 of the fixture body 9 (see Figure 6). As a result, the power cable 903 of the light source unit A1 can be shortened. Also, the case 20 is positioned between the multiple mounting holes 900 provided in the housing section 90 (see Figure 6). Thus, the distance between the suspension bolts inserted into the mounting holes 900 of the fixture body 9 and the case 20 of the light source unit A1 can be sufficiently large (see Figure 6). As a result, the light source unit A1 can maintain a sufficient insulation distance between the suspension bolt and the case 20.

[0051] (2-4) Operation of lighting fixtures The power lines connected to the terminal block 902 of the fixture body 9 are switched on and off by a switch installed on the wall of the room (hereinafter referred to as the wall switch). In other words, the lighting fixture B1 (light source unit A1) is switched alternately between the on state and the off state by operating the wall switch.

[0052] Furthermore, when the lighting fixture B1 (light source unit A1) is powered via a wall switch, it can be remotely controlled for flashing and dimming by a wireless signal transmitted from a remote controller (hereinafter referred to as "remote control"), which is not shown in the diagram.

[0053] The remote control, for example, accepts user input and generates control information corresponding to the received input. Furthermore, the remote control transmits a wireless signal containing the generated control information. The control information generated by the remote control includes instructions for switching the lighting fixture B1 (light source unit A1) on and off, and instructions for the dimming level.

[0054] The wireless signal transmitted from the remote control is received by the wireless communication unit 3 of the light source unit A1. The wireless communication unit 3 converts the control information contained in the wireless signal into a dimming signal and transmits the converted dimming signal to the lighting circuit 21 (control circuit 212) via the signal connector 5. The dimming signal corresponds to any value from 0% to 100%, with the rated light output of the light source unit A1 being 100%. However, when the control information is an instruction to switch from off to on, the dimming signal is set to 100%, and when the control information is an instruction to switch from on to off, the dimming signal is set to 0%.

[0055] The lighting circuit 21 controls the LED module 1 by changing the target value of the DC current supplied to the LED module 1 by the control circuit 212 in accordance with the dimming signal received from the wireless communication unit 3, thereby causing the LED module 1 to blink (switch between on and off) and dim. When the dimming signal is set to 0%, the control circuit 212 turns off the LED module 1 by stopping the power conversion circuit 210 and the constant current circuit 211.

[0056] Here, a portion of the wireless signal (radio waves) transmitted from the remote control passes electromagnetically through, for example, the gap between the first side wall 201 of the case 20 and the bottom plate 40 of the mounting member 4 (see Figure 4) and reaches the antenna 31 of the wireless communication unit 3 through the first opening 204 of the case 20. However, since the mounting member 4 of the light source unit A1 is made of metal, the wireless signal (radio waves) that passes electromagnetically through the mounting member 4 and reaches the antenna 31 is attenuated.

[0057] In particular, as shown in Figure 4, it is known that if the distance D1 from the pattern-forming surface of the antenna section 31 (the lower surface of the printed circuit board 32) to the mounting member 4 (bottom plate 40) is short, the attenuation of the wireless signal (radio wave) increases. Therefore, it is desirable that the above distance D1 be, for example, 4 mm or more. However, the lower limit of the distance D1 varies depending on the magnitude of the radio wave output of the antenna section 31, the frequency band of the radio wave, the type of material of the mounting member 4, the thickness of the mounting member 4, etc.

[0058] Therefore, the light source unit A1 has a second opening X1 in the mounting member 4 that allows wireless signals to pass through electromagnetically. The second opening X1 is formed in a part of the mounting member 4 (bottom plate 40) that is located in a position where electromagnetic waves (radio waves) emitted from the wireless communication unit 3 (more specifically, the antenna unit 31) can reach it (see Figure 7). The second opening X1 penetrates the bottom plate 40 in the thickness direction (vertical direction). In this embodiment, the second opening X1 is formed in the bottom plate 40 of the mounting member 4 at a position facing the power supply unit 2. More specifically, the second opening X1 is formed in the bottom plate 40 of the mounting member 4 at a position facing the wireless communication unit 3 (particularly the antenna unit 31). Thus, by forming the second opening X1 in a part of the mounting member 4 (bottom plate 40), the light source unit A1 can suppress the attenuation of wireless signals passing electromagnetically through the mounting member 4. Furthermore, if a second opening X1 is formed in the mounting member 4 (bottom plate 40), the limitation of radio waves may be suppressed even if the lower limit of the above distance D1 is shorter than when the second opening X1 is not formed. However, there is a risk that foreign matter (dust, insects, etc.) may enter the space surrounded by the cover 7 and the mounting member 4 through the second opening X1 of the bottom plate 40. For this reason, it is preferable to cover the second opening X1 with a lid 45 made of a material that does not easily attenuate radio waves (for example, synthetic resin, etc.) (see Figure 7). Thus, the light source unit A1 can prevent the entry of foreign matter while suppressing the attenuation of radio waves by covering the second opening X1 with the lid 45. The second opening X1 may also be covered with a material other than the lid 45, for example, an electrically insulating adhesive sheet.

[0059] Furthermore, the second opening X1 may also be an opening 410 formed in the side plate 41 of the mounting member 4 (see Figure 8). The opening 410 (second opening X1) is preferably located at a position where electromagnetic waves (radio waves) emitted from the antenna unit 31 can reach it. In addition, the opening 410 is preferably covered with a lid 411 made of a material that does not easily attenuate radio waves, such as synthetic resin, or with an electrically insulating adhesive sheet (see Figure 8). Moreover, an opening 206 may be formed in the second side wall 202 of the case 20 located between the wireless communication unit 3 (especially the antenna unit 31) and the second opening X1 (see Figure 8). The opening 206 is preferably covered with a lid made of a material that does not easily attenuate radio waves, such as synthetic resin, or with an electrically insulating adhesive sheet.

[0060] (3) Variant Next, several modifications of the light source unit A1 according to the embodiment will be described. However, each modification described below is characterized by the configuration of the power supply unit 2 and the wireless communication unit 3 (particularly the structure of the case 20 and the arrangement of the wireless communication unit 3 in the case 20), while other configurations are common to the light source unit A1 according to the embodiment. Therefore, in the description of each modification, the components common to the light source unit A1 according to the embodiment will not be shown or described.

[0061] (3-1) Variation 1 In the above embodiment, the first opening 204 of the case 20 is provided on the entire bottom wall 203 (opposing wall) of the case 20 that faces the mounting member 4. The bottom wall 203 faces the ceiling wall 200 and is surrounded by the four side walls 201 and 202. However, the first opening 204 only needs to be provided in a position where electromagnetic waves (radio waves) emitted from the wireless communication unit 3 (more specifically, the antenna unit 31) can reach it. More specifically, the first opening 204 may be provided on a part of the bottom wall 203 (see Figure 9), or it may be provided on the entirety or part of any one of the multiple wall sections 200 to 203 of the case 20 other than the bottom wall 203 (see Figure 10).

[0062] In the example shown in Figure 9, the case 20 has multiple wall sections 200 to 203. The first opening 204 is located on the bottom wall 203 (opposing wall) of the case 20, in a direction D1 perpendicular to the second surface 40b of the mounting member 4, in a position facing the wireless communication unit 3. In the example shown in Figure 9, it is desirable that the second opening X1 of the mounting member 4 be positioned to overlap with the first opening 204 in a direction D perpendicular to the second surface 40B of the mounting member 4. Also, in the example shown in Figure 9, it is desirable that the first opening 204 is covered by a lid 215 (case-side cover member) made of a material that does not easily attenuate radio waves, such as synthetic resin. In the example shown in Figure 9, the wireless signal S1 from the remote control is received by the antenna section 31 of the wireless communication unit 3 through the second opening X1 and the first opening 204. Furthermore, by covering the first opening 204 with the lid 215, dust and other debris can be prevented from entering the case (20) from the outside through the first opening 204. Alternatively, the first opening 205 may be sealed with an electrically insulating adhesive sheet instead of the cover 215.

[0063] In the example shown in Figure 10, the case 20 has multiple wall sections 200-203. The bottom wall 203 faces the top wall 200 and is surrounded by the four side walls 201 and 202. The first opening 204 is located on a specific side wall 201a of the four side walls 201 and 202, on the side of the bottom wall 203 that is closer to the wireless communication unit 3. It is desirable that the first opening 204 is covered with a lid 215 (case-side cover member) made of a material that does not easily attenuate radio waves, such as synthetic resin. In the example shown in Figure 10, the wireless signal S1 from the remote control is received by the antenna section 31 of the wireless communication unit 3 through the first opening 204. Covering the first opening 204 with the lid 215 prevents dust and other debris from entering the case 20 from the outside through the first opening 204. Alternatively, the first opening 205 may be covered with an electrically insulating adhesive sheet instead of the lid 215.

[0064] In the example shown in Figure 10, the first opening 204 may be positioned directly beside the wireless communication unit 3 on a specific side wall 201a.

[0065] (3-2) Modification 2 The light source unit A1 of the modified example 2 is characterized by the fact that the printed circuit board 25 of the lighting circuit 21 and the printed circuit board 32 of the wireless circuit section 30 are housed in the case 20 with their respective orientations intersecting (see Figures 11A and 11B). Note that the respective orientations of the printed circuit boards 25 and 32 refer to the normal directions of the mounting surfaces of the printed circuit boards 25 and 32, respectively. Specifically, the lighting circuit 21 is housed in the case 20 such that the ceiling wall 200 and the printed circuit board 25 are approximately parallel, and the wireless circuit section 30 (wireless communication section 3) is housed in the case 20 such that the second side wall 202 and the printed circuit board 32 are approximately parallel. Furthermore, the printed circuit boards 25 and 32 are housed in the case 20 side by side along the longitudinal direction of the case 20. The printed circuit board 25 of the lighting circuit 21 and the printed circuit board 32 of the wireless circuit section 30 are each held in place by claws 205 provided on the first side wall 201 of the case 20. The electrical connection between the lighting circuit 21 and the wireless circuit section 30 is made by lead wires 52 (see Figure 11A).

[0066] However, in the modified light source unit A1, compared to the embodiment where the two printed circuit boards 25 and 32 are housed in the case 20 without their orientations intersecting, the workability of housing the printed circuit boards 25 and 32 in the case 20 can be improved. Also, when the antenna section 31 is a pattern antenna or a patch antenna, the antenna section 31 has directivity in the thickness direction of the printed circuit board 32. Therefore, by housing the printed circuit board 32 upright in the case 20, the light source unit A1 of the modified light source unit A1 can improve the horizontal reception sensitivity for wireless signals. Here, if the distance D2 (see Figure 11A) from the printed circuit board 32 to the mounting member 4 (bottom plate 40) is short, the attenuation of radio waves when electromagnetically passing through the mounting member 4 increases. Therefore, it is desirable that the above distance D2 is, for example, 1 mm or more. However, the lower limit of the distance D2 changes depending on the magnitude of the radio wave output of the antenna section 31, the frequency band of the radio waves, the type of material of the mounting member 4, the thickness of the mounting member 4, etc.

[0067] The wireless communication unit 3 may be housed in the case 20 such that the first side wall 201 and the printed circuit board 32 are approximately parallel (see Figure 11B). The printed circuit board 32 is held in place by claws 205 provided on the ceiling wall 200.

[0068] Although not shown in the illustration, the second opening X1 is provided in at least one of the bottom plate 40 or the side plate 41 of the mounting member 4.

[0069] (3-3) Modified example 3 The light source unit A1 of Modified Example 3 differs from the light source unit A1 of Modified Example 2 in that the printed circuit board 25 of the lighting circuit 21 and the printed circuit board 32 of the wireless circuit unit 30 are arranged in the case 20 in the height direction (up and down direction) and housed in the case 20 (see Figures 12A and 12B). In other words, the light source unit A1 of Modified Example 3 is characterized in that the lighting circuit 21 and the wireless communication unit 3 are housed in the case 20 such that, when viewed from the direction opposite to the second surface 40B of the bottom plate 40 (up and down direction), the lighting circuit 21 overlaps with at least a part of the wireless communication unit 3. In this embodiment, "overlapping" means that, when viewed from the up and down direction, a part or all of the printed circuit board 32 of the wireless circuit unit 30 is within the projection range of the printed circuit board 25 of the lighting circuit 21.

[0070] The printed circuit board 25 of the lighting circuit 21 is held in place by claws 205 provided on the first side wall 201 of the case 20. On the other hand, the printed circuit board 32 of the wireless circuit section 30 (wireless communication section 3) is held in place by the case 20 via the printed circuit board 25 by being electrically and mechanically connected to the printed circuit board 25 by a signal connector 5. However, the method of fixing the printed circuit board 25 to the case 20 is not limited to being held by the claws 205. For example, the printed circuit board 25 may be screwed to a boss (bridge) protruding from the ceiling wall 200 of the case 20. Alternatively, the printed circuit board 32 of the wireless circuit section 30 may be held in place by the case 20, and the printed circuit board 25 of the lighting circuit 21 may be held in place by the case 20 via the printed circuit board 32. Alternatively, the two printed circuit boards 25 and 32 may each be held in place independently by the case 20.

[0071] However, the light source unit A1 of the modified example 3, like the modified example 2, can improve the workability of housing the printed circuit boards 25 and 32 in the case 20, and improve the horizontal reception sensitivity for wireless signals. Although not shown in the figures, the second opening X1 is provided in at least one of the bottom plate 40 or the side plate 41 of the mounting member 4.

[0072] As shown in Figure 12B, the distance D2 from the printed circuit board 32 of the antenna section 31 to the mounting member 4 (bottom plate 40) is preferably 1 mm or more in order to suppress attenuation of the wireless signal (radio wave). Similarly, the distance D3 from the printed circuit board 32 to the ceiling wall 200 of the case 20 is also preferably 1 mm or more. Furthermore, the distance D4 from the printed circuit board 32 to the first side wall 201 of the case 20, and the distance D5 from the printed circuit board 32 to the second side wall 202 of the case 20 are preferably 4 mm or more. However, if an opening is provided in the first side wall 201 or the second side wall 202, the distances D4 and D5 may be 4 mm or less. Also, the lower limit of distances D2 to D5 will vary depending on the magnitude of the radio wave output of the antenna section 31, the frequency band of the radio wave, the type of material of the mounting member 4, the thickness of the mounting member 4, etc.

[0073] (3-4) Modification 4 The light source unit A1 of Modification 4 differs from the light source unit A1 of Modification 3 in that the printed circuit board 32 of the wireless circuit section 30 is housed in the case 20 so as to face the first side wall 201 of the case 20 (see Figure 13).

[0074] However, the light source unit A1 of the modified example 4, like the modified examples 2 and 3, can improve the workability of housing the printed circuit boards 25 and 32 in the case 20, and improve the horizontal reception sensitivity for wireless signals. Although not shown in the figures, the second opening X1 is provided in at least one of the bottom plate 40 or the side plate 41 of the mounting member 4.

[0075] (3-5) Modification 5 The light source unit A1 of the modified example 5 is characterized in that the case 20 has a support portion 208 that supports the lighting circuit 21 and the wireless circuit portion 30 (see Figures 14A and 14B).

[0076] The support portion 208 has a horizontal piece 2080 formed in a flat shape and projecting into the case 20 from the second side wall 202 of the case 20, and a vertical piece 2081 formed in a flat shape and projecting upward from the tip of the horizontal piece 2080 (Figure 14A). The support portion 208 may be formed integrally with the case 20 by cutting and bending from the second side wall 202, for example. Alternatively, the support portion 208 may be formed from a molded body of synthetic resin.

[0077] The horizontal piece 2080 of the support section 208 is positioned beneath the printed circuit board 32 of the wireless circuit section 30 and supports the printed circuit board 32 from below (see Figure 14). The vertical piece 2081 faces the printed circuit board 32 along the thickness direction of the printed circuit board 32 and restricts the tilt of the printed circuit board 32.

[0078] Furthermore, if the support portion 208 is formed from a molded synthetic resin, the support portion 208 may have a fixing piece 2082 that protrudes upward from the rear end of the lateral piece 2080, and the fixing piece 2082 may be fixed to the second side wall 202. If the support portion 208 is formed from a molded synthetic resin having electrical insulating properties, the support portion 208 can electrically insulate the wireless circuit portion 30 from the second side wall 202 of the case 20. However, if the distance between the lower end of the printed circuit board 32 and the second surface 40B of the bottom plate 40 of the mounting member 4 is short (for example, about 1 mm), the bottom plate 40 may be used to prevent the wireless communication portion 3 from falling instead of the support portion 208.

[0079] However, in the modified example 5, the light source unit A1 can prevent the connection between the plug 51 and the socket 50 from coming loose by supporting the printed circuit board 32 (wireless circuit section 30) on the support section 208. The second opening X1 is provided, for example, on the bottom plate 40 of the mounting member 4.

[0080] Furthermore, vibrations during transportation may cause excessive stress on the solder joints between the printed circuit board 25 and the socket 50, and between the printed circuit board 32 and the plug 51, potentially accelerating the deterioration of these solder joints. However, by having a support portion 208 in the case 20 that supports the lighting circuit 21 and the wireless circuit portion 30, it is possible to prevent accelerated deterioration of the solder joints of the lighting circuit 21 and the wireless circuit portion 30 due to vibrations.

[0081] The support portion 208 may be formed integrally with the case 20 by bending the metal plates that make up the case 20 and the support portion 208. In this case, the support portion 208 is formed at the end of the second side wall 202 of the case 20 on the mounting member 4 side (i.e., the opening edge of the first opening 204). In this case, after the lighting circuit 21 and the wireless circuit portion 30 are housed in the case 20, the base of the horizontal piece 2080 of the support portion 208 (i.e., the boundary portion between the horizontal piece 2080 and the case 20) is bent to fold the horizontal piece 2080 inward into the case 20.

[0082] (3-6) Modification 6 The light source unit A1 of the modified example 6 is characterized in that the power supply unit 2 has an insulator 24 made of an electrical insulating material, and the insulator 24 is arranged between the lighting circuit 21 and the wireless circuit section 30 within the case 20 (see Figure 15).

[0083] The insulator 24 is formed in a flat plate shape from, for example, a synthetic resin material. The insulator 24 is positioned between the printed circuit board 25 of the lighting circuit 21 and the printed circuit board 32 of the wireless circuit section 30 so as to be parallel to the pair of first side walls 201.

[0084] However, in the modified light source unit A1 of Modified Example 6, the insulating distance between the lighting circuit 21 and the wireless circuit section 30 can be increased by the insulator 24. As a result, the light source unit A1 of Modified Example 6 can suppress short-circuit failures between the lighting circuit 21 and the wireless circuit section 30, and malfunctions caused by noise in the lighting circuit 21 and the wireless circuit section 30.

[0085] Furthermore, grooves or holes may be provided in a part of the insulator 24. Alternatively, the insulator 24 may be formed in a box shape and configured to house the wireless communication unit 3 inside.

[0086] (3-7) Modification 7 The light source unit A1 of Modified Example 7 is characterized in that the wireless communication unit 3 has multiple antenna units 31 (see Figure 16). The wireless communication unit 3 in Modified Example 7 has an antenna unit formed on the printed circuit board 32 of the wireless circuit unit 30 (hereinafter referred to as the first antenna unit 31A) and an antenna unit formed on a substrate separate from the printed circuit board 32 (hereinafter referred to as the antenna substrate 34) (hereinafter referred to as the second antenna unit 31B).

[0087] Here, it is preferable that the direction in which the reception sensitivity of the first antenna section 31A peaks and the direction in which the reception sensitivity of the second antenna section 31B peaks are offset by approximately 90 degrees from each other. This allows the light source unit A1 of the modified example 7 to expand the range in which electromagnetic waves (radio waves) can be received in the wireless communication section 3. The mounting member 4 may be provided with two second openings X1 that correspond one-to-one to the two antenna sections 31A and 31B, or it may be provided with one second opening X1 that corresponds to the two antenna sections 31A and 31B.

[0088] Furthermore, the first antenna section 31A and the second antenna section 31B may be configured to emit radio waves of different frequency bands into space or to receive radio waves from space.

[0089] Furthermore, the wireless circuit section 30 and the first and second antenna sections 31A and 31B may be formed on the printed circuit board 25 of the lighting circuit 21. In other words, the lighting circuit 21 and the wireless communication section 3 may be formed on the same substrate (one printed circuit board 25). By forming the lighting circuit 21 and the wireless communication section 3 on the same substrate, the power supply unit 2 can be miniaturized.

[0090] The second antenna unit 31B may be configured to emit or receive electromagnetic waves other than radio waves, such as infrared light or visible light, into or from space. In this case, the second antenna unit 31B has a photoelectric conversion element that converts infrared light or visible light into an electrical signal, or a light-emitting element that converts an electrical signal into infrared light or visible light. Therefore, the light source unit A1 of the modified example 7 can communicate using different types of electromagnetic waves (for example, radio waves and infrared light or visible light) as a medium.

[0091] (3-8) Variation 8 The light source unit A1 of Modified Example 8 is characterized by the arrangement of the lighting circuit 21 and the wireless communication unit 3 within the case 20. In the light source unit A1 of Modified Example 8, a rectangular void 250 is formed in the center of the printed circuit board 25 of the lighting circuit 21, and the printed circuit board 32 of the wireless circuit unit 30 is arranged within this void 250 (see Figure 15).

[0092] The light source unit A1 in modified example 8 can make effective use of the space inside the case 20, thereby reducing the size of the case 20.

[0093] (3-9) Other variations The printed circuit board 25 of the lighting circuit 21 and the printed circuit board 32 of the wireless communication unit 3 may be housed in the case 20 at a distance from each other in the height direction (up and down direction) of the case 20 (see Figure 18A). In this case, it is preferable that the printed circuit board 32 of the wireless communication unit 3 be positioned closer to the first opening 204 of the case 20 than the printed circuit board 25 of the lighting circuit 21 in the height direction of the case 20. By positioning the wireless communication unit 3 (especially the antenna unit 31) near the first opening 204 of the case 20, attenuation of the wireless signal can be reduced. However, the printed circuit board 25 of the lighting circuit 21 may also be positioned closer to the first opening 204 of the case 20 (see Figure 18B). In this case, the length of the conductor (e.g., electric wire) electrically connecting the lighting circuit 21 and the wireless communication unit 3 can be shortened, improving noise immunity.

[0094] Furthermore, the printed circuit board 25 of the lighting circuit 21 may be housed in the case 20 such that it completely overlaps with the printed circuit board 32 of the wireless communication unit 3 when viewed from the height direction of the case 20 (the direction opposite to the second surface 40B of the bottom plate 40 of the mounting member 4) (see Figure 18C). By housing the printed circuit board 25 of the lighting circuit 21 in the case 20 in such a way that the entire printed circuit board 32 of the wireless communication unit 3 overlaps with the printed circuit board 25 of the lighting circuit 21, the lengthwise dimension of the case 20 can be shortened. However, the printed circuit board 25 of the lighting circuit 21 may be housed in the case 20 such that it overlaps with a part of the printed circuit board 32 of the wireless communication unit 3 (see Figure 18D).

[0095] The connecting member that connects the lighting circuit 21 and the wireless circuit section 30 is not limited to the signal connector 5, but may be a harness cable with multiple wires bundled together, etc. Also, the signal connector 5 is not limited to a structure that can be inserted and removed from both sides of the surface of the printed circuit boards 25 and 32, but may be a structure that can be inserted and removed from the thickness direction of the printed circuit boards 25 and 32.

[0096] Furthermore, each printed circuit board 25, 32 may be fixed to the case 20 by being screwed to, for example, multiple bosses protruding from the ceiling wall 200 of the case 20.

[0097] Furthermore, the wireless communication unit 3 may receive and transmit wireless signals containing not only information related to the lighting control of the LED module 1, but also other information.

[0098] For example, the wireless communication unit 3 may transmit a wireless signal containing information regarding the usage status of the light source unit A1. This information regarding the usage status of the light source unit A1 may include, for example, the time (date) when use began, the cumulative lighting time, the occurrence of an abnormality in the power supply unit 2 or LED module 1, the diagnosis result of the lifespan of the power supply unit 2 or LED module 1, the time period during which it was lit, and the power consumption. Alternatively, the wireless communication unit 3 may transmit a wireless signal containing detection information from sensors provided on the light source unit A1 or the fixture body 9. This sensor detection information may include, for example, detection information of the presence or absence of a person by a motion sensor, or detection information of brightness (illuminance) by a brightness sensor. Alternatively, the wireless communication unit 3 may transmit a wireless signal containing identification information for the light source unit A1. This identification information may include the manufacturing lot number of the light source unit A1, the model number corresponding to the type of light source unit A1, and so on.

[0099] The various types of information mentioned above (information other than information related to lighting control) may be used to link lighting fixture B1 with other devices. Other devices linked with lighting fixture B1 include, for example, television receivers, audio equipment such as wireless speakers or smart speakers, air conditioning and air quality equipment such as air conditioners and air purifiers, security equipment, and disaster prevention equipment.

[0100] (4) Summary A lighting device (light source unit A1) according to a first aspect of this disclosure comprises a light source (LED module 1), a power supply device (2) that supplies lighting power to the light source, a wireless communication unit (3), and a mounting member (4). The wireless communication unit (3) transmits or receives wireless signals using electromagnetic waves as a medium, or at least one of the latter. The mounting member (4) has a light source mounted on a first surface (40A) and a power supply device (2) mounted on a second surface (40B) opposite to the first surface (40A). The power supply device (2) comprises a lighting circuit (21) that controls lighting power and a case (20) that has a first opening (204) in a part corresponding to the wireless communication unit (3) and houses the lighting circuit (21) and the wireless communication unit (3).

[0101] In the first embodiment of the lighting device, the lighting circuit (21) and the wireless communication unit (3) are housed in a case (20), so the installation of the lighting circuit (21) and the wireless communication unit (3) to the mounting member (4) is completed by attaching the case (20) to the mounting member (4). As a result, the lighting device according to the first embodiment can improve the workability of the assembly work compared to the conventional example. In addition, since the case (20) has a first opening (204) in the part corresponding to the wireless communication unit (3), attenuation of the wireless signal received or transmitted by the wireless communication unit (3) can be suppressed.

[0102] A lighting device according to a second aspect of this disclosure can be realized by combining it with the first aspect. In the lighting device according to the second aspect, the case (20) has an opposing wall (203) facing the mounting member (4). The first opening (204) is located in the opposing wall (203) of the case (20) at a portion facing the wireless communication unit (3).

[0103] The lighting device according to the second embodiment can suppress attenuation of wireless signals received by the wireless communication unit (3) from the mounting member (4) side and wireless signals transmitted to the mounting member (4) side by the first opening (204).

[0104] A lighting device according to a third aspect of this disclosure can be realized in combination with the second aspect. In the lighting device according to the third aspect, the case (20) has a plurality of side walls (201, 202) surrounding an opposing wall (203) that faces the mounting member (4). The first opening (204) is located on a specific side wall (201a) of the plurality of side walls (201, 202) of the case (20) at a location that is closer to the opposing wall (203) than the wireless communication unit (3), or at a position directly beside the wireless communication unit (3).

[0105] The lighting device according to the third embodiment can suppress attenuation of radio signals received by the wireless communication unit (3) from a specific side wall (201a) and radio signals transmitted to the specific side wall (201a) by the first opening (204).

[0106] A lighting device according to a fourth aspect of the present disclosure can be realized in combination with any of the first to third aspects. In the lighting device according to the third aspect, the case (20) further includes a case-side cover member (lid 215) formed of an electrically insulating material that closes the first opening (204).

[0107] In the lighting device according to the fourth aspect of this disclosure, the case-side cover member (lid 215) prevents dust and other debris from entering the case (20) through the first opening (204).

[0108] A lighting device according to the fifth aspect of this disclosure can be realized in combination with any of the first to fourth aspects. In the lighting device according to the fifth aspect, the case (20) is preferably made of metal.

[0109] The lighting device according to the fifth embodiment can ensure the strength of the case (20), protect the various circuit boards inside the case (20) from external noise, and suppress the diffusion of noise from the various circuit boards inside the case (20) to the outside.

[0110] A lighting device according to the sixth aspect of this disclosure can be realized in combination with any of the first to fifth aspects. In the lighting device according to the sixth aspect, the mounting member (4) is preferably made of metal.

[0111] The lighting device according to the sixth embodiment can ensure the strength of the mounting member (4).

[0112] A lighting device according to the seventh aspect of this disclosure can be realized by a combination of any of the first to sixth aspects. In the lighting device according to the seventh aspect, it is desirable that the mounting member (4) has a second opening (X1) through which electromagnetic waves can pass electromagnetically.

[0113] In the lighting device according to the seventh embodiment, the mounting member (4) has a second opening (X1) through which electromagnetic waves can pass electromagnetically, so that attenuation of the wireless signal received or transmitted by the wireless communication unit (3) can be suppressed.

[0114] An illumination device according to the eighth aspect of this disclosure can be realized by combining it with the seventh aspect. In the illumination device according to the eighth aspect, the second opening (X1) is preferably located on the mounting member (4) at a portion facing the power supply unit (2).

[0115] The lighting device according to the eighth embodiment can further suppress the attenuation of the wireless signal received or transmitted by the wireless communication unit (3).

[0116] A lighting device according to the ninth aspect of this disclosure can be realized in combination with the seventh or eighth aspect. In the lighting device according to the ninth aspect, the mounting member (4) preferably further includes a mounting member side cover member (lid 45) formed of an electrically insulating material that closes the second opening (X1).

[0117] The lighting device according to the ninth embodiment can further suppress the attenuation of wireless signals received or transmitted by the wireless communication unit (3) while preventing the intrusion of foreign matter.

[0118] A lighting device according to the tenth aspect of this disclosure can be realized in combination with any of the seventh to ninth aspects. In the lighting device according to the tenth aspect, the wireless communication unit (3) preferably has an antenna unit (31) and a wireless circuit unit (30). The antenna unit (31) preferably emits electromagnetic waves into space or receives electromagnetic waves from space. The wireless circuit unit (30) preferably transmits or receives at least one of wireless signals using electromagnetic waves as a medium via the antenna unit (31). The second opening (X1) is preferably positioned to overlap with the antenna unit (31) when viewed from a direction facing the second surface (40B).

[0119] The lighting device according to the tenth embodiment can suppress the attenuation of electromagnetic waves emitted from the antenna unit (31) into space, or electromagnetic waves received by the antenna unit (31) from space.

[0120] An illumination device according to the eleventh aspect of this disclosure can be realized by combining it with the tenth aspect. In the illumination device according to the eleventh aspect, it is preferable that the power supply device (2) has a plurality of antenna units (31).

[0121] The 11th embodiment of the lighting device can increase the sensitivity of electromagnetic waves in the wireless communication unit (3) by, for example, shifting the directions in which the sensitivity of each of the multiple antenna units (31) peaks relative to each other.

[0122] A lighting device according to the twelfth aspect of this disclosure can be realized in combination with any of the first to eleventh aspects. In the lighting device according to the twelfth aspect, the power supply device (2) preferably further has a power terminal section (22) that is electrically connected to an external power supply. The case (20) preferably houses the power terminal section (22), the lighting circuit (21), and the wireless communication unit (3) in that order.

[0123] In the lighting device according to the twelfth embodiment, when the device is attached to the fixture body (9), the power terminal section (22) can be positioned near the terminal block (902) attached to the fixture body (9). Therefore, in the lighting device according to the twelfth embodiment, the wiring (power cable 903) connecting the power terminal section (22) and the lighting circuit (21) can be shortened.

[0124] A lighting device according to the thirteenth aspect of this disclosure can be realized in combination with any of the first to twelfth aspects. In the lighting device according to the thirteenth aspect, it is preferable that the case (20) houses the lighting circuit (21) and the wireless communication unit (3) such that the lighting circuit (21) overlaps with at least a portion of the wireless communication unit (3) when viewed from a direction facing the second surface (40B).

[0125] The lighting device according to the 13th embodiment can shorten the case (20) in the direction parallel to the second surface (40B).

[0126] A lighting device according to a 14th aspect of this disclosure can be realized by combination with any of the 1st to 13th aspects. In the lighting device according to the 14th aspect, the lighting circuit (21) and the wireless communication unit (3) are preferably formed on separate printed circuit boards (printed circuit board 25, printed circuit board 32). The case (20) is preferably housed with the printed circuit board (25) of the lighting circuit (21) and the printed circuit board (32) of the wireless communication unit (3) intersecting in their respective orientations.

[0127] The lighting device according to the 14th embodiment can improve the work efficiency of housing the lighting circuit (21) and the wireless communication unit (3) in the case (20) compared to the case in which the lighting circuit (21) and the wireless communication unit (3) are not crossed.

[0128] A lighting device according to the 15th aspect of this disclosure can be realized in combination with any of the 1st to 14th aspects. In the lighting device according to the 15th aspect, the power supply device (2) preferably further includes a connecting member (signal connector 5) that electrically connects the lighting circuit (21) and the wireless communication unit (3).

[0129] The lighting device according to the 15th embodiment can improve the workability of the electrical connection work between the lighting circuit (21) and the wireless communication unit (3).

[0130] A lighting device according to the 16th aspect of this disclosure can be realized in combination with the 15th aspect. In the lighting device according to the 16th aspect, the connecting member is preferably a connector.

[0131] The lighting device according to the 16th embodiment can further improve the workability of the electrical connection work between the lighting circuit (21) and the wireless communication unit (3).

[0132] A lighting device according to the 17th aspect of this disclosure can be realized in combination with any of the 1st to 16th aspects. In the lighting device according to the 17th aspect, the case (20) preferably further has a support portion (208) that supports the lighting circuit (21) and the wireless communication unit (3).

[0133] The lighting device according to the 17th embodiment prevents the electrical connection between the lighting circuit (21) and the wireless communication unit (3) from becoming disconnected by supporting the lighting circuit (21) and the wireless communication unit (3) on the support part (208).

[0134] A lighting device according to the 18th aspect of this disclosure can be realized in combination with any of the 1st to 17th aspects. In the lighting device according to the 18th aspect, the power supply (2) preferably further comprises an insulator (24) formed of an electrical insulating material and disposed between the lighting circuit (21) and the wireless communication unit (3) within the case (20).

[0135] In the 18th embodiment of the lighting device, the insulating distance between the lighting circuit (21) and the wireless communication unit (3) can be increased by the insulator (24). As a result, the lighting device in the 18th embodiment can suppress short-circuit failures between the lighting circuit (21) and the wireless communication unit (3), and malfunctions caused by noise in the lighting circuit (21) and the wireless communication unit (3).

[0136] A lighting device according to the 19th aspect of this disclosure can be realized by combining it with the 10th aspect. In the lighting device according to the 19th aspect, the lighting circuit (21) and the wireless circuit section (30) are preferably each composed of printed circuit boards. Preferably, the printed circuit boards constituting the lighting circuit (21) and the printed circuit boards constituting the wireless circuit section (30) are formed on the same substrate.

[0137] The lighting device according to the 19th embodiment allows for miniaturization of the power supply device (2).

[0138] A lighting fixture (B1) according to the 20th aspect of this disclosure is characterized by comprising one of the lighting devices described in the 1st to 19th descriptions and a fixture body (9) that supports the lighting device.

[0139] The lighting fixture (B1) according to the 20th embodiment can improve the workability of the assembly process compared to the conventional example. [Explanation of Symbols]

[0140] A1 Light source unit (lighting device) B1 Lighting fixtures X1 2nd opening 1 LED module (light source) 2 Power supply 3. Wireless Communication Section 4. Mounting components 5. Signal connectors (connecting components) 9. Main body of the device 20 cases 21 Lighting Circuit 22 Power terminal section 24 Insulator 30 Radio circuit section 31 Antenna section 40A, Page 1 40B 2nd side 43 Recess (thin wall part) 44. Opening (through hole) 45 Lid (cover component) 203 Bottom wall (opposing wall) 204 First opening 208 Support part 215 Lid (Case-side cover component)

Claims

1. Light source and A power supply device that supplies power to illuminate the light source, A wireless communication unit that transmits or receives wireless signals using electromagnetic waves as a medium, A mounting member on which the light source is attached to the first surface and the power supply is attached to the second surface opposite to the first surface, Equipped with, The aforementioned power supply device is A lighting circuit that controls the lighting power, A case having a first opening in the portion corresponding to the wireless communication unit, and housing the lighting circuit and the wireless communication unit, It has, The case includes a case-side cover member formed of an electrically insulating material that closes the first opening. Lighting device.

2. The case has a wall facing the mounting member, The first opening is located in the opposing wall of the case, in a portion facing the wireless communication unit. The lighting device according to claim 1.

3. The case has a plurality of side walls surrounding the opposing wall that faces the mounting member, The first opening is located in a specific side wall among the plurality of side walls of the case, on the side of the opposing wall that is closer to the wireless communication unit, or in a position directly beside the wireless communication unit. The lighting device according to claim 2.

4. The case is made of metal, A lighting device according to any one of claims 1 to 3.

5. The mounting member is made of metal, A lighting device according to any one of claims 1 to 4.

6. The mounting member has a second opening through which the electromagnetic waves can pass electromagnetically. A lighting device according to any one of claims 1 to 5.

7. The second opening is located in the mounting member at a portion facing the power supply device. The lighting device according to claim 6.

8. The mounting member further includes a mounting member side cover member formed of an electrically insulating material that closes the second opening, The lighting device according to claim 6 or 7.

9. The wireless communication unit is An antenna unit that emits the aforementioned electromagnetic waves into space or receives the aforementioned electromagnetic waves from space, At least the transmission or reception of wireless signals using electromagnetic waves as a medium via the antenna section The wireless circuit section performs the other function, It has, The second opening is positioned so as to overlap with the antenna portion when viewed from a direction opposite to the second surface. A lighting device according to any one of claims 6-8.

10. The power supply device has a plurality of antenna units, The lighting device according to claim 9.

11. The power supply device further comprises a power terminal section that is electrically connected to an external power supply, The case houses the power terminal section, the lighting circuit, and the wireless communication section in that order. A lighting device according to any one of claims 1 to 10.

12. The case houses the lighting circuit and the wireless communication unit such that, when viewed from a direction opposite to the second surface, the lighting circuit overlaps with at least a part of the wireless communication unit. A lighting device according to any one of claims 1-11.

13. The lighting circuit and the wireless communication unit are each formed on separate printed circuit boards, The case houses the printed circuit board of the lighting circuit and the printed circuit board of the wireless communication unit with their orientations intersecting. A lighting device according to any one of claims 1 to 12.

14. The power supply device further comprises a connecting member that electrically connects the lighting circuit and the wireless communication unit. A lighting device according to any one of claims 1 to 13.

15. The connecting member is a connector. The lighting device according to claim 14.

16. The case further comprises a support portion for supporting the lighting circuit and the wireless communication unit, A lighting device according to any one of claims 1 to 15.

17. The power supply device further comprises an insulator made of an electrical insulating material, which is disposed between the lighting circuit and the wireless communication unit within the case. A lighting device according to any one of claims 1 to 16.

18. The lighting circuit and the wireless circuit section are each composed of printed circuits, and the printed circuits constituting the lighting circuit and the printed circuits constituting the wireless circuit section are formed on the same substrate. The lighting device according to claim 9.

19. A lighting device according to any one of claims 1 to 18, The fixture body that supports the aforementioned lighting device, Equipped with, Lighting fixtures.

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