Light source unit and lighting fixture

Abstract

A light source unit that can improve the degree of freedom in arranging a wireless module while ensuring the receiving sensitivity of the wireless module is provided. [Solution] The light source unit includes a mounting member (21), a substrate (221), a wireless module (50), and a shielding cover (51). The substrate (221) is disposed on the lower surface of the mounting member (21). An LED (220) is provided on the substrate (221). The wireless module (50) has an antenna (53) for receiving control signals from a remote control device. The shielding cover (51) covers the wireless module (50). A portion of the shielding cover (51) overlaps with a portion of the upper surface of the mounting member (21) and occupies the space between the upper and lower surfaces of the mounting member (21). The wireless module (50) is disposed on the upper surface of the mounting member (21) so as to overlap the insulating member (219). The shielding cover (51) blocks electromagnetic waves. The shielding cover (51) is box-shaped with an opening on one side, and is fixed to the upper surface of the mounting member (21) so as to cover the wireless module (50) with the opening facing the upper surface of the mounting member (21).

Description

[Technical Field]

[0001] The present disclosure relates to a light source unit and a lighting fixture, and more particularly to a light source unit including a wireless module and a lighting fixture including the light source unit. [Background technology]

[0002] The lighting fixture described in Patent Document 1 includes a lighting fixture body (frame), a light source, a first wireless communication device (wireless module), a light-emission control circuit (control device), and a power supply. The light source is provided on the surface of the lighting fixture body. The first wireless communication device is a device that receives control signals wirelessly transmitted from outside, and is provided on the surface of the lighting fixture body (i.e., the surface on the same side as the light source) at one end in the longitudinal direction (i.e., a location that has little effect on the light emission of the light source). The light-emission control circuit is a circuit that controls the light emission state of the light source in response to the control signal received by the first wireless communication device, and is provided on the back surface of the lighting fixture body. The power supply supplies operating current to the light source, the first wireless communication device, and the light-emission control circuit, and is provided on the back surface of the lighting fixture body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-185934 Summary of the Invention [Problem to be solved by the invention]

[0004] In the lighting fixture described in Patent Document 1, the first wireless communication device is placed on the surface of the lighting fixture body (i.e., on the same side as the light source). However, in this case, the placement location of the first wireless communication device is limited to a location that has little effect on the light emission of the light source. This may result in a long cable between the first wireless device and the power supply or light emission control circuit, which may be affected by external noise and reduce the reception sensitivity of the first wireless device.

[0005] The present disclosure has been made in consideration of the above-mentioned problems, and aims to provide a light source unit and a lighting fixture that can improve the freedom of placement of a wireless module while ensuring the receiving sensitivity of the wireless module. [Means for solving the problem]

[0006] A light source unit according to one aspect of the present disclosure includes a frame, a light source substrate, a wireless module, a lighting device, and a shielding cover. The frame has a first surface and a second surface opposite the first surface. The light source substrate is disposed on the first surface. A light source is provided on the light source substrate. The wireless module has an antenna for receiving radio waves including a control signal from an external device. The lighting device is disposed on the second surface and controls the lighting state of the light source in response to the control signal received by the antenna. The shielding cover covers the wireless module. A portion of the frame overlapping at least a portion of the second surface and occupying the space between the first surface and the second surface is made of an insulating material having electrical insulation properties. The wireless module is disposed on the second surface so as to overlap the insulating material. The lighting device includes a power supply circuit. The power supply circuit is disposed on the second surface and converts AC power to DC power and supplies the converted DC power to the light source. A region that prevents the radio waves from being blocked is provided at a location on the light source substrate facing the wireless module. The shielding cover blocks electromagnetic waves. The shielding cover is box-shaped with an opening on one side, and is fixed to the second side of the frame so as to cover the wireless module with the opening facing the second side.

[0007] A lighting fixture according to one aspect of the present disclosure includes the light source unit according to the above aspect and a fixture body that supports the light source unit. [Effects of the Invention]

[0008] The present disclosure has an effect of improving the degree of freedom in arranging a wireless module while ensuring the reception sensitivity of the wireless module. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of a lighting fixture according to an embodiment. [Figure 2] FIG. 2 is a block diagram of the lighting fixture. [Figure 3] FIG. 3 is an exploded perspective view of the light source unit and the lighting fixture according to the embodiment. [Figure 4] FIG. 4 is a plan view of a wireless module provided in the light source unit of the above embodiment. [Figure 5] FIG. 5 is a perspective view, with some parts omitted, showing a mounting portion of the wireless module in the light source unit. [Figure 6] FIG. 6 is a partially omitted plan view showing a mounting portion of the wireless module in the light source unit. [Figure 7] FIG. 7 is a partially omitted plan view showing a mounting portion of a wireless module in a light source unit according to the first modification. [Figure 8] FIG. 8 is a partially omitted plan view showing the mounting portion of the LED board in the light source unit according to the second modification. [Figure 9] FIG. 9 is a diagram showing the electric field distribution characteristics of the wireless module. [Figure 10] FIG. 10 is a partially omitted plan view showing the mounting portion of the LED board in the light source unit according to the third modification. [Figure 11] FIG. 11 is a partially omitted plan view showing the mounting portion of the LED board in the light source unit according to the fourth modification. [Figure 12] FIG. 12 is a partially omitted plan view showing the mounting portion of the LED board in the light source unit according to the fourth modification. [Figure 13] FIG. 13 is a partially omitted plan view showing a mounting portion of an LED board in a light source unit according to the fifth modified example. [Figure 14] FIG. 14 is a partially omitted plan view showing a mounting portion of a wireless module in a light source unit according to the sixth modification. [Figure 15] FIG. 15 is a block diagram of a lighting fixture according to the seventh modification. [Figure 16] FIG. 16 is a block diagram of a lighting fixture according to the eighth modification. DETAILED DESCRIPTION OF THE INVENTION

[0010] (Embodiment) Hereinafter, a light source unit and a lighting device according to an embodiment of the present disclosure will be described in detail with reference to the drawings. However, each diagram described in the embodiment 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 embodiment is merely an example of the present disclosure. The present disclosure is not limited to the following embodiment, and various modifications are possible depending on the design, etc., as long as the effects of the present disclosure can be achieved.

[0011] As shown in Fig. 1, the lighting fixture 3 of this embodiment is a lighting fixture that is installed on a ceiling or the like in a room to illuminate the room, and can be operated by a wireless signal from a remote control device 6. The lighting fixture 3 has a light source unit 2 and a fixture body 4 that supports the light source unit 2. However, the light source unit 2 or the lighting fixture 3 may include a remote control device 6 for remote control.

[0012] The light source unit 2 is detachably attached to a fixture body 4 that is directly attached to the ceiling. However, the fixture body 4 may be embedded in the ceiling, or may be directly attached to a wall or embedded in the wall.

[0013] The remote control device 6 is a device that receives operations (for example, operations to turn on, turn off, and dim) from a user and controls the lighting state (on, off, and dim) of the light source unit 2 by wireless signals in accordance with the received operations. The remote control device 6 may be fixed to a predetermined position, such as a wall of a room, or may be a freely portable terminal device.

[0014] As shown in FIG. 2, the remote control device 6 includes an operation unit 61, a control unit 62, and a wireless module 63. The operation unit 61 is a unit that accepts operations from a user. The wireless module 63 is a device that performs wireless communication with the light source unit 2 (more specifically, the wireless module 50 described below) using radio waves in a predetermined frequency band (for example, the 920 MHz band) as a medium. The control unit 62 generates a control signal that controls the lighting state of the light source unit 2 in response to an input operation to the operation unit 61, and wirelessly transmits the generated control signal from the wireless module 63 to the light source unit 2. The light source unit 2 switches its lighting state in response to the control signal from the remote control device 6. In this way, the lighting state of the light source unit 2 is controlled by the remote control device 6 using a wireless signal.

[0015] The fixture body 4 supports the light source unit 2 when directly attached to the ceiling. As shown in FIG. 3 , the fixture body 4 includes a storage section 40, a pair of reflecting plates 41, and a pair of end plates 42. The storage section 40 is a rectangular box with an open bottom. The pair of reflecting plates 41 protrude obliquely upward from both longitudinal opening edges of the storage section 40. The pair of end plates 42 are provided at both longitudinal ends of the storage section 40 and the pair of reflecting plates 41.

[0016] The fixture main body 4 is installed on the ceiling by inserting suspension bolts (not shown) into at least two of a plurality of mounting holes 400 provided on the bottom surface of the housing portion 40 and tightening nuts (not shown) onto the suspension bolts. The fixture main body 4 supports the light source unit 2 by attaching the light source unit 2 to the housing portion 40. In this supported state, a power line from an AC power source B1 is inserted into one of a plurality of power supply holes 401 provided on the bottom surface of the housing portion 40. The power line inserted into the power supply hole 401 is electrically connected to the lighting device 1 in the light source unit 2 via a terminal block.

[0017] The light source unit 2 is a device that emits light for illumination. The light source unit 2 is supported by the fixture body 4 by being attached to the housing 40 of the fixture body 4. As shown in FIG. 3 , the light source unit 2 includes the lighting device 1, two LED modules 22 that are turned on by the lighting device 1, an attachment member 21 (frame), a cover 23, and a wireless device 5.

[0018] The LED module 22 includes a large number of LEDs 220 (light sources), a substrate 221 (light source substrate), and a relay connector 223. The substrate 221 is formed in the shape of a long rectangular plate. The large number of LEDs 220 are mounted on the center of the shorter side of the lower surface of the substrate 221, aligned at equal intervals along the longitudinal direction of the substrate 221. The relay connector 223 is mounted on the substrate 221 of each LED module 22 at an end portion on the side where two LED modules 22 are adjacent to each other along the longitudinal direction. An input connector 222 is mounted on one of the LED modules 22 (the LED module 22 on the right side in FIG. 3 ). The input connector 222 is mounted on the substrate 221 of the right LED module 22 at an end portion (the right end portion) opposite to the side where the relay connector 223 is mounted.

[0019] The mounting member 21 is formed in the shape of a long rectangular gutter and is made of an insulating material (in other words, a dielectric material) 219 that is permeable to radio waves from the remote control device 6 and has electrical insulation properties. That is, the entire mounting member 21 is made of the insulating material 219. The insulating material 219 is an insulating (in other words, dielectric) material, such as a resin material, specifically, polycarbonate resin, acrylic resin, or ABS resin. The mounting member 21 has a bottom plate 210, a pair of side plates 211, and a hook portion 217 (see FIG. 5). The bottom plate 210 is a long rectangular plate. The pair of side plates 211 rise upward from both ends of the bottom plate 210 in the longitudinal direction. The hook portion 217 is a portion that hooks onto the storage portion 40 of the appliance main body 4.

[0020] The two LED modules 22 are attached to the lower surface (first surface) of the bottom plate 210 by a plurality of claws cut and raised from the bottom plate 210, with their relay connectors 223 electrically connected to each other. That is, a large number of LEDs 220 are arranged on the lower surface of the bottom plate 210 via a substrate. The input connector 222 of the LED module 22 is electrically connected to an output connector of the lighting device 1. The hook portions 217 are provided at both longitudinal ends of the bottom plate 210.

[0021] Cover 23 is formed in a semi-cylindrical shape from a translucent synthetic resin such as acrylic resin or polycarbonate resin. Cover 23 also has a pair of protruding walls 233 that protrude upward along the longitudinal direction. Cover 23 houses mounting member 21 between the pair of protruding walls 233, and is attached to mounting member 21 by hooking hook portions formed on the tips (upper ends) of the pair of protruding walls 233 onto the tips (upper ends) of a pair of side plates 211 of mounting member 21.

[0022] The light source unit 2 is supported by the fixture body 4 by fitting into the accommodating portion 40 as the hook portion 217 (see FIG. 5) of the mounting member 21 is hooked onto a predetermined position of the accommodating portion 40 of the fixture body 4.

[0023] The lighting device 1 controls the lighting state of the LED module 22 in response to a control signal (a control signal from the remote control device 6) received by an antenna 53 (described later) of the wireless device 5. The lighting device 1 is fixed to the upper surface (second surface) of the bottom plate 210 of the mounting member 21 of the light source unit 2.

[0024] The lighting device 1 has a printed circuit board 19 and a case 18 that houses the printed circuit board 19. The printed circuit board 19 mounts various electronic components that constitute the lighting device 1. The printed circuit board 19 is configured by mounting various electronic components, including integrated circuits, on a rectangular printed wiring board. The case 18 is formed from a metal plate into a long rectangular box shape with one side (bottom) open. The case 18 houses the printed circuit board 19 and is fixed to the top surface of the bottom plate 210 with the open side facing the top surface of the bottom plate 210. The case 18 is electrically connected to the mounting member 21 when fixed to the mounting member 21. Furthermore, the mounting member 21 is electrically connected to the fixture body 4 when the light source unit 2 is attached to the fixture body 4. Therefore, the case 18 of the lighting device 1 is electrically connected to the fixture body 4 through the mounting member 21.

[0025] The lighting device 1 includes a control unit 15 and a power conversion unit 16 (power supply circuit) (see FIG. 2). The control unit 15 and the power conversion unit 16 are mounted on a printed circuit board 19. The control unit 15 controls the power conversion unit 16 in response to a control signal received from the remote control device 6 via the wireless device 5. The power conversion unit 16 controls the lighting state (on, off, and dimming) of the LED module 22 by controlling the power supply to the LED module 22 in response to the control of the control unit 15. This controls the lighting state of the LED 220.

[0026] More specifically, the power conversion unit 16 has an input unit 17a and an output unit 17b. The input unit 17a is a portion to which the AC power supply B1 is electrically connected, and in this embodiment, is configured, for example, by the above-mentioned terminal block. The output unit 16b is a portion to which the LED module 22 (and therefore the LEDs 220) is electrically connected, and in this embodiment, is configured, for example, by the above-mentioned output connector.

[0027] If the control signal is a control signal instructing lighting, the control unit 15 controls the power conversion unit 16 to light the LED module 22. In response to this control, the power conversion unit 16 converts AC power from the AC power source B1 into DC power, controls the current value of the converted DC power to a target current value, and supplies the DC power to the LED module 22. This lights up the LED module 22. If the control signal is a control signal instructing lighting extinction, the control unit 15 controls the power conversion unit 16 to extinguish the LED module 22. In response to this control, the power conversion unit 16 stops the power supply to the LED module 22. This turns off the LED module 22. If the control signal is a control signal instructing dimming, the control unit 15 controls the power conversion unit 16 to control the dimming of the LED module 22. In response to this control, the power conversion unit 16 controls the target current value to a target current value corresponding to the dimming level specified by the control signal. This controls the LED module 22 to the dimming level specified by the control signal. The dimming level is expressed as the ratio (%) of the average power per unit time supplied to the LED module 22 to the rated power, assuming that the light output of the LED module 22 when the rated power is supplied is 100%.

[0028] The wireless device 5 is a device that receives radio waves including the above-mentioned control signal from the remote control device 6. As shown in Fig. 3, the wireless device 5 includes a wireless module 50 and a shielding cover 51. As shown in Fig. 4, the wireless module 50 includes a circuit board 52, an antenna 53, and a communication circuit 54.

[0029] The circuit board 52 is a board on which the antenna 53 and the communication circuit 54 are mounted. The circuit board 52 is, for example, a substantially rectangular plate-like board. The lower surface of the circuit board 52 is divided into a first region 52A and a second region 52B. The first region 52A is, for example, one half of the lower surface of the circuit board 52, and the second region 52B is, for example, the other half of the lower surface of the circuit board 52. The antenna 53 is patterned in the first region 52A. A conductor 55 is provided over the entire surface of the second region 52B (i.e., uniformly over substantially the entire second region 52B). The conductor 55 is electrically connected to the antenna 53.

[0030] The antenna 53 is a part that receives radio waves including the above-mentioned control signal from the remote control device 6. The antenna 53 receives radio waves in a predetermined frequency band (for example, the 920 MHz band). As described above, the antenna 53 is provided in the first region 52A on the lower surface of the circuit board 52. The antenna 53 is patterned using an elongated conductor. The antenna 53 has, for example, a zigzag pattern. More specifically, the antenna 53 is alternately folded back at both ends of the short side of the first region 52A and deployed in the longitudinal direction of the first region 53A. The long side and short side directions of the first region 52A are perpendicular to each other. Hereinafter, the direction in which the antenna 53 is alternately folded back will also be referred to as the folding direction T1, and the direction in which the antenna 53 is deployed will also be referred to as the deployment direction T2. In this embodiment, the deployment direction T2 of the antenna 53 is parallel to the longitudinal direction X of the mounting member 21, and the folding direction T1 of the antenna 53 is parallel to the lateral direction Y of the mounting member 21 (see FIGS. 4 and 6). Note that the longitudinal direction X and lateral direction Y of the mounting member 21 also correspond to the longitudinal direction and lateral direction of the upper surface (second surface) of the bottom plate 210 of the mounting member 21, respectively.

[0031] The communication circuit 54 is electrically connected to the antenna 53. The communication circuit 54 is also electrically connected to the lighting device 1 via a signal cable. The communication circuit 54 extracts a control signal from the radio waves received by the antenna 53 and outputs the extracted control signal to the lighting device 1. The communication circuit 54 is mounted on the top surface of the circuit board 52 in an area overlapping with the second area 51B (i.e., on the back side of the conductor 55).

[0032] As shown in Fig. 5, the wireless module 50 is fixed to the upper surface (second surface) of the bottom plate 210 of the mounting member 21. In this fixed state, the antenna 53 of the wireless module 50 faces the upper surface of the mounting member 21. The wireless module 50 is also arranged adjacent to the lighting device 1 in the longitudinal direction X of the mounting member 21. More specifically, the input unit 17a of the lighting device 1 is arranged on one end side of the lighting device 1 in the longitudinal direction X of the mounting member 21 (on the left side in the example of Fig. 5). The wireless module 50 is arranged adjacent to the opposite side of the input unit 17a of the lighting device 1 (on the right side in the example of Fig. 5). As a result, the wireless module 50 is arranged at a location away from the AC power supply B1.

[0033] In this embodiment, hook portions 217 for hooking onto the fixture body 4 are provided at both ends of the mounting member 21 in the longitudinal direction X (see FIG. 5). The lighting device 1 is fixed at a location close to one of the hook portions 217 on both sides (the hook portion 217 on the right side of the page in the example of FIG. 5). The wireless module 50 is disposed on the upper surface of the mounting member 21, between the lighting device 1 and the hook portion 217 on the right side. This allows the wireless module 50 to be disposed in the empty space between the lighting device 1 and the hook portion 217.

[0034] The shielding cover 51 protects the wireless module 50 from external noise (electromagnetic waves) and prevents electromagnetic waves generated by the wireless module 50 from diffusing to the outside. The shielding cover 51 is made of a material that blocks electromagnetic waves (for example, a metal plate such as a copper plate or an aluminum plate). The shielding cover 51 is formed, for example, in the shape of a rectangular box with one surface (bottom surface) open. The shielding cover 51 is fixed to the upper surface (second surface) of the mounting member 21 so that the open surface faces the upper surface of the bottom plate 210 and covers the wireless module 50 from above. It is desirable that the shielding cover 51 be electrically connected to the mounting member 21 and thereby be grounded.

[0035] In this lighting fixture 3, radio waves transmitted from remote control device 6 pass through cover 23, LED module 22, and mounting member 21, and are received by antenna 53 of wireless module 50. At this time, mounting member 21 is configured with insulating member 219, which prevents mounting member 21 from blocking radio waves from remote control device 6. Therefore, even if wireless module 50 is placed on the upper surface of mounting member 21, the reception sensitivity of wireless module 50 can be ensured.

[0036] As described above, with this light source unit 2 and lighting fixture 3, the wireless module 50 is provided on the upper surface of the mounting member 21 (i.e., the surface opposite to the LED 220), which prevents the placement of the wireless module 50 from affecting the light emission of the LED 220. This improves the degree of freedom in the placement location of the wireless module 50. Furthermore, since the entire mounting member 21 is made of the insulating member 219, even if the wireless module 50 is provided on the upper surface of the mounting member 21, it is possible to prevent the mounting member 21 from blocking radio waves transmitted from the remote control device 6 to the wireless module 50. This ensures the reception sensitivity of the wireless module 50 even if the wireless module 50 is provided on the upper surface of the mounting member 21. As a result, it is possible to improve the degree of freedom in the placement of the wireless module 50 while ensuring the reception sensitivity of the wireless module 50.

[0037] Furthermore, since the entire mounting member 21 is made of the insulating member 219, the manufacturing process of the mounting member 21 can be simplified.

[0038] (Variation) Modifications of the above embodiment will now be described. The following modifications may be implemented in combination.

[0039] (Variation 1) In the above embodiment, the entire mounting member 21 is made of the insulating member 219. However, as shown in FIG. 7, only the portion 21a of the mounting member 21 may be made of the insulating member 219, and the remaining portion 21b may be made of metal. The portion 21a of the mounting member 21 overlaps at least a portion of the upper surface (second surface) of the mounting member 21 and occupies the space between the lower surface (first surface) and the upper surface of the mounting member 21. In the example of FIG. 7, the portion 21a of the mounting member 21 is the portion of the mounting member 21 between the lighting device 1 and the hook portion 217 on the right side of the drawing. The portion 21a of the mounting member 21 extends over an area larger than the planar dimensions of the wireless module 50. The portion 21a and the remaining portion 21b of the mounting member 21 may be connected to each other by screws or by bonding. The wireless module 50 is disposed on the upper surface of the mounting member 21 so as to overlap the insulating member 219. As with the above embodiment, this modification also makes it possible to improve the degree of freedom in arranging the wireless module 50 while ensuring the reception sensitivity of the wireless module 50.

[0040] (Variation 2) 8 , in the above embodiment, the substrate 221 of the LED module 22 has a slit 227 at a corresponding position S1 corresponding to the wireless module 50. The corresponding position S1 of the substrate 221 is a position corresponding to the electric field concentration position S2 of the wireless module 50 (in other words, a position overlapping the electric field concentration position S2 when viewed from the thickness direction of the LED module 22). That is, the slit 227 is provided at a position corresponding to the electric field concentration position S2 of the LED module 22.

[0041] The electric field concentration area S2 is an area in the wireless module 50 where the electric field distribution of the antenna 53 is concentrated. The electric field distribution of the antenna 53 is the distribution of the electric field generated by the antenna 53. FIG. 9 shows the electric field distribution of the antenna 53 when the antenna 53 has a zigzag pattern. As shown in FIG. 9, the electric field concentration area S2 is located around one end of the antenna 53 in the folding direction T1 (i.e., the folded portion on the conductor 55 side) in the wireless module 50. The change in the electric field distribution at the electric field concentration area S2 is greater with the folding direction T1 than with the unfolding direction T2 of the antenna 53. Therefore, in the electric field generated by the antenna 53, if the electric field component in the unfolding direction T2 is defined as a first electric field component Ex and the electric field component in the folding direction T1 is defined as a second electric field component Ey, then at the electric field concentration area S2, the second electric field component Ey is greater than the first electric field component Ex.

[0042] In this modification, the wireless module 50 is disposed on the upper surface of the bottom plate 210 of the mounting member 21, as shown in Fig. 8. In this arrangement, the electric field component Ex at the electric field concentration point S2 is parallel to the longitudinal direction X of the mounting member 21, and the electric field component Ey at the electric field concentration point S2 is parallel to the lateral direction Y of the mounting member 21 (see Figs. 4 and 8). The slit 227 is provided so as to overlap the corresponding point S1 of the mounting member 21 when viewed from the front of the mounting member 21. The slit 227 extends in a direction (in this embodiment, the longitudinal direction X) that intersects (for example, is perpendicular to) the direction (in this embodiment, the lateral direction Y) of the electric field components Ex, Ey at the electric field concentration point S2, whichever is larger, of the longitudinal direction X and the lateral direction Y of the mounting member 21 (see Figs. 8 and 9).

[0043] The length of slit 227 (length in the longitudinal direction X) is preferably within the range of 0.5×λ±0.3×λ, where λ is the wavelength of the radio waves used in wireless communication with remote control device 6. There are no particular restrictions on the width of slit 212 (length in the transverse direction Y), but it is preferable that it be as small as possible from the standpoint of design and taking into consideration the passage of foreign matter.

[0044] In this way, by providing the slits 227 in the LED module 22, it is possible to prevent the slits 227 from blocking the radio waves from the remote control device 6 by the LED module 22. As a result, it is possible to improve the reception sensitivity of the wireless module 50.

[0045] (Variation 3) In Modification 2, when the corresponding portion S1 of the LED module 22 corresponding to the wireless module 50 is an edge portion 221a of the substrate 221 of the LED module 22, a notch 224 may be provided in the edge portion 221a instead of the slit 227, as shown in FIG. 10 . In this case, the notch 224 is provided so as to overlap (correspond to) the corresponding portion S1 of the substrate 221 corresponding to the wireless module 50 when viewed from the front of the mounting member 21. Furthermore, the length of the notch 224 (length in the longitudinal direction X) is preferably within a range of 0.5×λ±0.3×λ, where λ is the wavelength of the radio wave used in wireless communication with the remote control device 6. The notch 224 preferably extends along a direction (in this embodiment, the longitudinal direction X) that intersects (e.g., is perpendicular to) the direction (in this embodiment, the transverse direction Y) in which the electric field components Ex, Ey (see FIG. 9 ) of the electric field at the electric field concentration portion S2 are larger, between the longitudinal direction X and the transverse direction Y of the mounting member 21.

[0046] (Variation 4) 11 , in the above embodiment, an antenna 225 (second antenna) is provided on a substrate 221 of the LED module 22 at a corresponding position S1 corresponding to the wireless module 50. The corresponding position S1 of the substrate 221 is a position corresponding to the electric field concentration position S2 of the wireless module 50 (in other words, a position overlapping the electric field concentration position S2 when viewed from the thickness direction of the LED module 22). That is, the antenna 225 is provided at a position corresponding to the electric field concentration position S2 of the LED module 22. In the example of FIG. 11 , the antenna 225 has a so-called zigzag pattern in which it is alternately folded back at both ends in the lateral direction Y of the mounting member 21 and deployed in the longitudinal direction X of the mounting member 21. The antenna 225 is not connected to a power source and functions as a parasitic antenna.

[0047] In this modification, radio waves from the remote control device 6 are relayed by the antenna 225 and received by the antenna 53 of the wireless module 50. This allows the antenna 53 to receive the radio waves from the remote control device 6 effectively.

[0048] The antenna 225 may have a crank shape as shown in Fig. 12. In this case, the antenna 225 has three linear portions 225a, 225b, and 225c connected together. The two linear portions 225a and 225c are parallel to each other and to the unfolding direction T2 (see Fig. 9) of the antenna 53 of the wireless module 50. The two linear portions 225a and 225b are arranged offset from each other in the folding direction T1 (see Fig. 9) of the antenna 53. The linear portion 225b is connected between the two linear portions 225a and 225c and is arranged to intersect (for example, perpendicular to) the unfolding direction T2 of the antenna 53. In this case, the antenna 225 also functions as a parasitic antenna that relays radio waves from the remote control device 6.

[0049] (Variation 5) 13 , in the LED module 22 in the above embodiment, no wiring pattern is provided at the corresponding location S1 corresponding to the wireless module 50. This makes it possible to prevent the wiring pattern on the substrate 221 from blocking the radio waves from the remote control device 6. As a result, the radio waves from the remote control device 6 can be effectively received by the antenna 53 of the wireless module 50.

[0050] (Variation 6) 14 , in the above embodiment, the wireless module 50 is disposed on the upper surface of the mounting member 21 so that the unfolding direction T2 of the antenna 53 is parallel to the short-side direction Y of the mounting member 21 and the folding direction T1 of the antenna 53 is parallel to the long-side direction X of the mounting member 21. In this case, the electric field concentration area S2 of the wireless module 50 extends in the short-side direction Y of the mounting member 21.

[0051] (Variation 7) 15 , in the above embodiment, the control unit 15 is provided in the wireless module 50. In this case, the control unit 15 is mounted on the circuit board 52 of the wireless module 50 instead of being mounted on the printed circuit board 19 of the lighting device 1.

[0052] (Variation 8) 16, in this modification, the wireless module 50 in the above embodiment is provided in the lighting device 1. In this case, the antenna 53 and the communication circuit 54 of the wireless module 50 are mounted on the printed circuit board 19 of the lighting device 1 instead of being mounted on the circuit board 52. Also, in this case, the shielding cover 51 is omitted.

[0053] (summary) The light source unit (2) of the first embodiment includes a frame (21), a light source substrate (221), a wireless module (50), and a lighting device (1). The frame (21) has a first surface (e.g., a bottom surface) and a second surface (e.g., an upper surface) opposite the first surface. The light source substrate (221) is disposed on the first surface. A light source (220) is provided on the light source substrate (221). The wireless module (50) has an antenna (53) for receiving radio waves including a control signal from an external device (6). The lighting device (1) is disposed on the second surface and controls the lighting state of the light source (220) in response to the control signal received by the antenna (53). A portion (e.g., 21a) of the frame (21) overlapping at least a portion of the second surface and occupying a space between the first surface and the second surface is made of an insulating member (219) having electrical insulation properties. The wireless module (50) is disposed on the second surface so as to overlap the insulating member (219).

[0054] According to this configuration, the wireless module (50) is provided on the second surface (i.e., the surface opposite to the light source (220)) of the frame (21), thereby preventing the placement of the wireless module (50) from affecting the light emission of the light source (220). This improves the flexibility in the placement location of the wireless module (50). Furthermore, a portion (e.g., 21a) of the frame (21) that overlaps at least a portion of the second surface and occupies the space between the first surface and the second surface is made of the insulating member (219). This prevents the frame (21) from blocking radio waves transmitted from the external device (6) to the wireless module (50), even when the wireless module (50) is provided on the second surface of the frame (21). This ensures the reception sensitivity of the wireless module (50) even when the wireless module (50) is provided on the second surface of the frame (21). As a result, the flexibility in the placement of the wireless module (50) is improved while ensuring the reception sensitivity of the wireless module (50).

[0055] The light source unit (2) of the second embodiment is the same as that of the first embodiment, except that the entire frame (21) is made of an insulating member (219).

[0056] According to this configuration, the entire frame (21) is made of the insulating member (219), which simplifies the manufacturing process of the frame (21).

[0057] In the light source unit (2) of the third aspect, in the first or second aspect, a slit (227) or a notch (224) is provided in a corresponding portion (S1) of the light source substrate (221) corresponding to the wireless module (50). With this configuration, the slit (227) or the notch (224) can prevent the light source substrate (221) from interfering with radio wave reception of the wireless module (50). As a result, the reception sensitivity of the wireless module (50) can be improved.

[0058] The light source unit (2) of the fourth embodiment is the same as that of the third embodiment, except that the wavelength of the radio waves is λ, and the length of the slit (227) or the notch (224) is within the range of 0.5×λ±0.3×λ.

[0059] This configuration ensures good reception sensitivity of the wireless module (50).

[0060] In the light source unit (2) of the fifth aspect, in the third or fourth aspect, the slit (227) or the notch (224) extends in a direction intersecting either the longitudinal direction (X) or the lateral direction (Y) of the second surface, whichever direction has the larger electric field component (Ex, Ey) at the electric field concentration point (S2) of the wireless module (50).

[0061] This configuration ensures good reception sensitivity of the wireless module (50).

[0062] In the light source unit (2) of the sixth aspect, in any one of the third to fifth aspects, the antenna (53) has a zigzag pattern in which it is alternately folded back at both ends in the predetermined direction (T1) and deployed in a direction (T2) intersecting the predetermined direction (T1). The periphery of one end of the antenna (53) in the predetermined direction (T1) is an electric field concentration area (S2) of the wireless module (50). The slit (227) or the notch (224) is provided in the thickness direction of the light source substrate (221) so as to overlap the electric field concentration area (S2) of the wireless module (50).

[0063] According to this configuration, when the antenna (53) has a zigzag pattern, the slits (227) or the notches (224) can be arranged at the locations where radio waves are concentrated.

[0064] In the light source unit (2) of the seventh aspect, in any one of the first to sixth aspects, the antenna (53) is a first antenna (53). The light source unit (2) further includes a second antenna (225) at a corresponding position (S1) of the light source substrate (221) corresponding to the wireless module (50).

[0065] According to this configuration, the second antenna 225 can relay radio waves from the external device 6 to the antenna 53 of the wireless module 50. As a result, the receiving sensitivity of the wireless module 50 can be improved.

[0066] In the light source unit (2) of the eighth aspect, in any one of the first to seventh aspects, no wiring pattern is provided in a corresponding portion (S1) of the light source substrate (221) corresponding to the wireless module (50).

[0067] This configuration can prevent the wiring pattern of the light source substrate (221) from interfering with radio wave reception by the wireless module (50), thereby improving the reception sensitivity of the wireless module (50).

[0068] In a light source unit (2) of a ninth aspect, in any one of the first to eighth aspects, the lighting device (1) has an input part (17a) and a power supply circuit (16). The input part (17a) receives power from a power supply (B1). The power supply circuit (16) supplies the power received from the input part (17a) to the light source (220). The input part (17a) is disposed on one side of a second surface of the lighting device (1) in the longitudinal direction (X). The wireless module (50) is disposed on the opposite side of the lighting device (1) from the input part (17a).

[0069] This configuration allows the wireless module (50) to be located away from the power source (B1), thereby preventing a high voltage from being applied to the wireless module (50) unintentionally.

[0070] In a light source unit (2) of a tenth aspect, in any one of the first to ninth aspects, the lighting device (1) is provided with a power supply circuit (16) that is disposed on a second surface (e.g., an upper surface) of the frame (21) and supplies power to the light source (220). A wireless module (50) is provided in the power supply circuit (16).

[0071] According to this configuration, the wireless module (50) can be configured integrally with the power supply circuit (16), thereby eliminating the need to secure a new location for the wireless module (50).

[0072] The light source unit (2) of an eleventh aspect is any one of the first to tenth aspects, and further includes a shielding cover (51) that covers the wireless module (50).

[0073] According to this configuration, the shielding cover (51) can protect the wireless module (50) from external noise (electromagnetic waves) and can also prevent the electromagnetic waves generated by the wireless module (50) from diffusing to the outside.

[0074] A lighting fixture (3) of a twelfth aspect includes the light source unit (2) of any one of the first to eleventh aspects, and a fixture body (4) that supports the light source unit (2).

[0075] According to this configuration, it is possible to provide a lighting fixture (3) that exhibits the above-mentioned effects of the light source unit (2).

[0076] In the lighting fixture (3) of the thirteenth aspect, in the twelfth aspect, the frame (21) has a hook portion (217) that hooks onto the fixture body (4). The wireless module (50) is disposed between the lighting device (1) and the hook portion (217) in the longitudinal direction (X) of the frame (21).

[0077] According to this configuration, the wireless module (50) can be disposed in the space between the lighting device (1) and the hook portion (217) of the frame (21). [Explanation of symbols]

[0078] 1 lighting device 3. Lighting fixtures 4. Instrument body 6 Remote control device (external device) 7 Insulating material 16 Power conversion section (power supply circuit) 17a Input section 21 Mounting member (frame) 51 Shielding cover 50 Wireless Module 53 Antenna (1st Antenna) 217 Hook 219 Insulating materials 221 Substrate (light source substrate) 224 Notch 225 Antenna (Second Antenna) 227 Slit B1 AC power supply (power supply) S1 Corresponding Parts S2 Electric field concentration point T1 turning direction T2 development direction X Longitudinal direction of mounting material (longitudinal direction of second surface) Y Short side direction of mounting part (short side direction of second surface)

Claims

1. a frame having a first surface and a second surface opposite the first surface; a light source substrate disposed on the first surface and having a light source provided thereon; a wireless module having an antenna for receiving radio waves including a control signal from an external device; a lighting device disposed on the second surface and controlling a lighting state of the light source in response to the control signal received by the antenna; a shielding cover that covers the wireless module, a portion of the frame overlapping at least a part of the second surface and occupying a space between the first surface and the second surface is made of an insulating material having electrical insulation properties; the wireless module is disposed so as to overlap the insulating member on the second surface, The lighting device includes a power supply circuit disposed on the second surface, which converts AC power into DC power and supplies the converted DC power to the light source. a region that can prevent the radio waves from being blocked is provided at a location on the light source substrate that faces the wireless module, The shielding cover blocks electromagnetic waves, the shielding cover is box-shaped with an opening on one side, and is fixed to the second side of the frame so as to cover the wireless module with the opening facing the second side. Light source unit.

2. The entire frame is made of the insulating member. The light source unit according to claim 1 .

3. the antenna is a first antenna, a second antenna is further provided at a position on the light source substrate corresponding to the wireless module; The light source unit according to claim 1 or 2.

4. a wiring pattern is not provided at a portion of the light source substrate corresponding to the wireless module; The light source unit according to claim 1 or 2.

5. The lighting device is an input unit for inputting power from a power supply; the power supply circuit supplies the power input from the input unit to the light source, the input unit is disposed on one side of the second surface of the lighting device in a longitudinal direction, The wireless module is disposed on the opposite side of the lighting device from the input unit. The light source unit according to any one of claims 1 to 4.

6. Further, a shielding cover is provided to cover the wireless module. The light source unit according to any one of claims 1 to 5.

7. The light source unit according to any one of claims 1 to 6, and a fixture body that supports the light source unit. Lighting fixtures.

8. The frame has a hook portion that hooks onto the tool body, The wireless module is disposed between the lighting device and the hook portion in the longitudinal direction of the frame.

8. A lighting fixture according to claim 7.

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