JP7115950B2 - lighting equipment - Google Patents

Description

The present invention relates to lighting fixtures.

Lighting fixtures with wireless communication devices have been proposed. For example, Patent Literature 1 discloses a lighting fixture intended to improve reception sensitivity. The lighting fixture disclosed in Patent Literature 1 includes a fixture body and a lighting unit. The instrument body has an opening. The lighting unit is detachably attached to the fixture body. The lighting unit has a mounting plate, a light source unit, and a wireless communication device. The mounting plate is housed in the instrument body with its lower surface (surface) facing the opening of the instrument body. A slit is provided in the mounting plate. The light source unit is attached to the lower surface of the mounting plate and emits light downward from the lighting fixture. A wireless communication device has an antenna and a housing. The housing has an antenna housing section that houses the antenna. The housing is fixed to the mounting plate with the antenna housing portion (antenna) inserted through the slit. As a result, the antenna is arranged below the light source unit.

JP 2017-91958 A

However, in the lighting fixture disclosed in Patent Literature 1, the antenna is arranged below the light source unit, so the light emitted from the light source unit is blocked by the antenna. At least one of shadows and light emission unevenness may occur on the light emitting surface of the lighting fixture due to the light emitted from the light source unit being blocked by the antenna.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a lighting fixture capable of suppressing blocking of light emitted from a light source by an antenna.

A lighting fixture disclosed in the present application includes a light source, a light source board, a wireless communication section, and a power supply section . The light source emits light. The light source substrate includes a first area and a second area on which the light sources are arranged. The wireless communication unit has an antenna for receiving radio waves. The power supply unit supplies power to the light source and the wireless communication unit. The first region does not have a conductive pattern for supplying power to the light source. The conductive pattern is formed in the second region. The light source substrate has a first substrate surface and a second substrate surface opposite to the first substrate surface. The light source is arranged on the first substrate surface. The wireless communication unit is arranged on the second substrate surface side, and at least part of the antenna overlaps with the first area. The power supply unit is arranged on the second substrate surface side and overlaps the second region.

In the lighting fixture disclosed in the present invention, it is preferable that the first region is surrounded by the conductive pattern .

The luminaire disclosed herein further comprises a retaining member. The holding member holds the light source substrate and the wireless communication section. The holding member has a holding member body and a second through hole. The second through hole penetrates the holding member main body. The holding member main body has a first holding surface and a second holding surface opposite to the first holding surface. The wireless communication section is arranged on the first holding surface side. The light source substrate is arranged on the second holding surface side. The second through hole is provided at a position facing the first region.

In the lighting fixture disclosed in the present application, the antenna has a gap between it and the first holding surface.

In the lighting fixture disclosed in the present application, the first substrate surface includes a light source arrangement area along the outer periphery of the light source substrate. The light source is arranged in the light source arrangement area. The first area is arranged inside the light source arrangement area.

In the luminaire disclosed herein, the first region includes an overlapping region and a peripheral region. The overlap region overlaps at least a portion of the antenna. The peripheral region is a region different from the overlapping region.

In the lighting fixture disclosed in the present application, the wireless communication section has an antenna substrate. The antenna substrate includes the antenna. The antenna substrate has an antenna mounting surface on which the antenna is provided. The antenna mounting surface is parallel to the first substrate surface.

According to the lighting fixture of the present invention, it is possible to prevent the light emitted from the light source from being blocked by the antenna.

It is a figure which shows the lighting fixture which concerns on embodiment of this invention. It is an exploded perspective view showing composition of a lighting fixture concerning an embodiment of the present invention. It is an exploded perspective view showing composition of a lighting fixture concerning an embodiment of the present invention. 3 is an exploded perspective view showing a power supply unit, wireless communication unit, wireless case, and main body chassis according to the embodiment of the present invention; FIG. 1 is a perspective view showing an adapter, a power supply section, a wireless communication section, a wireless case, and a main body chassis according to an embodiment of the present invention; FIG. (a) and (b) are perspective views showing the configuration of a wireless communication unit according to an embodiment of the present invention. (a) and (b) are diagrams showing a wireless communication unit and a wireless case according to an embodiment of the present invention, and (c) shows a cross section along the VIIC-VIIC line shown in FIG. It is a diagram. 6 is a view showing a cross section along line VIII-VIII shown in FIG. 5; FIG. It is a top view which shows the 1st mounting part which concerns on embodiment of this invention, and its vicinity. It is a top view which shows the 1st mounting part which concerns on embodiment of this invention, and its vicinity. 4 is a diagram showing the relationship between the first radio wave passing area and the antenna area according to the embodiment of the present invention; FIG. It is a top view which shows the 1st light source board|substrate and the 2nd light source board|substrate which concern on embodiment of this invention. FIG. 4 is a diagram showing a second radio wave passing area and its vicinity according to the embodiment of the present invention; 3 is an exploded perspective view showing configurations of a main body, a light source, and a light source cover according to the embodiment of the present invention; FIG. 3 is an exploded perspective view showing configurations of a main body, a light source, and a light source cover according to the embodiment of the present invention; FIG. FIG. 5 is a diagram showing the relationship between the second radio wave passing area and the antenna area according to the embodiment of the present invention;

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of lighting fixtures according to the present invention will be described below with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

First, with reference to FIG. 1, the lighting fixture 100 which concerns on this embodiment is demonstrated. FIG. 1 is a diagram showing a lighting fixture 100 according to this embodiment.

As shown in FIG. 1, the luminaire 100 is mounted on a mounting surface, such as the ceiling surface C. As shown in FIG. In this embodiment, the lighting fixture 100 is a ceiling light having a substantially circular shape in plan view.

Next, the configuration of the lighting fixture 100 according to the present embodiment will be described with reference to FIGS. 2 and 3. FIG. 2 and 3 are exploded perspective views showing the configuration of the lighting fixture 100 according to this embodiment. Specifically, FIG. 2 shows the luminaire 100 viewed from above. FIG. 3 shows the luminaire 100 viewed from below.

As shown in FIGS. 2 and 3, the lighting fixture 100 includes a body cover 1, an adapter 2, a power supply section 3, a wireless communication section 4, a wireless case 5, a body section 6, a light source section 7, a light source cover 8, and a shade 9. Prepare. In the description below, the side of the lighting device 100 on which the body cover 1 is provided is referred to as the "upper side of the lighting device 100", and the opposite side is referred to as the "lower side of the lighting device 100". In addition, the present embodiment will be described with the radial direction when the lighting device 100 is viewed in plan as the “radial direction DR”.

The body cover 1 is connected to the body portion 6 . In this embodiment, the body cover 1 is connected to the body portion 6 by fastening members such as screws. The body cover 1 is a plate-like member made of metal. The body cover 1 is preferably made of a material that absorbs heat emitted from at least one of the light source unit 7 and the power supply unit 3 and radiates the heat to the outside. The main body cover 1 contains, for example, metal such as iron as a material.

The adapter 2 supplies an external power supply voltage to the power supply section 3 . The adapter 2 has a connecting member 21 and a wiring member 22 . The connecting member 21 connects the wiring member 22 and the body cover 1 . The wiring member 22 electrically connects the power supply unit 3 and the socket. A socket is provided on the ceiling surface C. Adapter 2 is, for example, a hook sealing adapter.

The power supply unit 3 supplies power to the wireless communication unit 4 and the light source unit 7 . The power supply unit 3 has a power supply device 31 and a power supply case 32 . The power supply 31 includes a power supply circuit and a power control circuit. The power supply circuit converts an external power supply voltage supplied via the adapter 2 into an internal power supply voltage. The power supply circuit supplies the internal power supply voltage to the wireless communication section 4 and the light source section 7 . The power control circuit controls the internal power supply voltage supplied by the power supply circuit. Specifically, the internal power supply voltage is controlled so that the current value of the current supplied by the power supply circuit becomes a constant value corresponding to the communication signal transmitted from the wireless communication unit 4 . As a result, light having a light amount and a correlated color temperature corresponding to the communication signal transmitted from the wireless communication unit 4 is emitted from the lighting device 100 . The power supply device 31 is housed in a power supply case 32 . The power supply case 32 is arranged in the body portion 6 .

The wireless communication unit 4 communicates with a communication device that performs wireless communication using the same communication standard. Specifically, the wireless communication unit 4 receives at least a signal (radio waves) transmitted from a communication device. The wireless communication unit 4 according to this embodiment transmits and receives various signals (radio waves) to and from communication equipment. The wireless communication unit 4 and the communication device, for example, mutually transmit and receive setting signals for pairing the wireless communication unit 4 and the communication device. By pairing the wireless communication unit 4 and the communication device, wireless communication becomes possible between the wireless communication unit 4 and the communication device. In this embodiment, the wireless communication unit 4 performs wireless communication using a short-range wireless standard such as ZIGBEE (registered trademark). Also, the communication device transmits a signal for controlling at least one of the amount of light emitted from the lighting device 100 and the correlated color temperature. A communication device is, for example, a bridge connected to a network. Note that the communication device is not limited to a bridge, and may be, for example, a router connected to a network. The network is, for example, a wireless LAN (Local Area Network).

The wireless communication unit 4 is connected to the power supply device 31 via a signal line. The wireless communication unit 4 transmits a communication signal to the power supply device 31 according to radio waves received from the communication device. The communication signal is a control signal that controls at least one of the amount of light emitted from the lighting device 100 and the correlated color temperature. Also, the wireless communication unit 4 receives a signal indicating the state of the lighting device 100 from the power supply device 31 . The wireless communication unit 4 transmits a signal (radio wave) indicating the state of the lighting device 100 to the communication device. The signal indicating the state of the lighting device 100 indicates, for example, at least one of the dimming state and the toning state of the lighting device 100 .

The wireless case 5 accommodates the wireless communication section 4 . The wireless case 5 is arranged in the body portion 6 . The wireless case 5 preferably contains a material that prevents the radio waves transmitted and received by the wireless communication unit 4 from being blocked. In this embodiment, the wireless case 5 contains resin such as polypropylene as a material.

The body portion 6 supports the body cover 1 , the adapter 2 , the power supply portion 3 , the wireless case 5 , the light source portion 7 , the light source cover 8 and the shade 9 . The body portion 6 is an example of a holding member. The body portion 6 has a body chassis 61 and metal fittings 62 . The body chassis 61 is an example of a holding member body. The main body chassis 61 is a disk-shaped metal member having a downwardly recessed central portion. The material of the body chassis 61 is preferably a material that absorbs heat generated from the light source section 7 and radiates it to the outside. The body chassis 61 includes, for example, metal such as iron as a material.

The body chassis 61 has a first holding surface 61a and a second holding surface 61b opposite to the first holding surface 61a. The first holding surface 61a and the second holding surface 61b are parallel. In this embodiment, the first holding surface 61 a constitutes the upper surface of the main chassis 61 , and the second holding surface 61 b constitutes the lower surface of the main chassis 61 .

The body chassis 61 has an opening 611 and a housing space 612 . The opening 611 is provided substantially in the center of the main body chassis 61 . The opening 611 penetrates the body chassis 61 . The shape of the opening 611 is substantially circular in plan view. The adapter 2 is inserted through the opening 611 .

The accommodation space 612 is provided in a recessed portion of the main body chassis 61 . Specifically, the housing space 612 is provided on the first holding surface 61a side of the main body chassis 61 . The accommodation space 612 is open at the top. The accommodation space 612 is provided along the outer circumference of the opening 611 .

The power supply unit 3 , the wireless communication unit 4 , and the wireless case 5 are arranged in the housing space 612 . In other words, the power supply unit 3, the wireless communication unit 4, and the wireless case 5 are arranged on the first holding surface 61a side of the main body chassis 61. As shown in FIG.

The body cover 1 is arranged on the first holding surface 61a. The body cover 1 is connected to the body chassis 61 so as to cover the accommodation space 612 . When the body cover 1 and the body chassis 61 are connected, the power supply section 3 , the wireless communication section 4 and the wireless case 5 are covered by the body cover 1 .

The metal fitting 62 is arranged on the second holding surface 61b of the main body chassis 61 . The body chassis 61 holds the shade 9 via metal fittings 62 .

The light source unit 7 emits light. The light source section 7 has a light source substrate 70 . In this embodiment, the light source section 7 has two light source substrates 70 . The light source board 70 is a printed circuit board. The light source substrate 70 includes, for example, glass epoxy resin as a material.

Each light source substrate 70 has a first substrate surface 70a and a second substrate surface 70b opposite the first substrate surface 70a. The first substrate surface 70a and the second substrate surface 70b are parallel. In this embodiment, the first substrate surface 70 a constitutes the lower surface of the light source substrate 70 , and the second substrate surface 70 b constitutes the upper surface of the light source substrate 70 .

Each of the two light source substrates 70 has a substantially semicircular shape in plan view. The two light source substrates 70 are arranged on the second holding surface 61b side of the main body chassis 61 so as to form a generally annular shape in plan view. Specifically, the two light source boards 70 are arranged on the main body chassis 61 so that the second board surface 70b contacts the second holding surface 61b. In this embodiment, the two light source boards 70 are connected to the main body chassis 61 by fastening members such as screws.

One of the two light source boards 70 faces the wireless communication section 4 with the body chassis 61 interposed therebetween. Hereinafter, of the two light source boards 70, the light source board 70 facing the wireless communication section 4 is referred to as "first light source board 71", and the other light source board 70 is referred to as "second light source board 72".

The wireless communication unit 4 faces the second substrate surface 70b of the first light source substrate 71 with the main chassis 61 interposed therebetween.

The light source section 7 further has a plurality of light sources 73 and two light source board connectors 74 . The light source 73 is, for example, an SMD (Surface Mount Device) chip.

A plurality of light sources 73 emit light. The plurality of light sources 73 are dispersedly arranged on the first substrate surface 70 a of the first light source substrate 71 and the first substrate surface 70 a of the second light source substrate 72 . Hereinafter, among the plurality of light sources 73, the light source 73 arranged on the first substrate surface 70a of the first light source substrate 71 is referred to as a "first light source 731" and arranged on the first substrate surface 70a of the second light source substrate 72. The light source 73 is described as a "second light source 732". A plurality of first light sources 731 are arranged on the first substrate surface 70 a of the first light source substrate 71 . A plurality of second light sources 732 are arranged on the first substrate surface 70 a of the second light source substrate 72 .

The two light source board connectors 74 are arranged on the first board surface 70a of the first light source board 71 and the first board surface 70a of the second light source board 72, respectively. Hereinafter, the light source board connector 74 arranged on the first board surface 70a of the first light source board 71 will be referred to as a "first light source board connector 741", and the light source arranged on the first board surface 70a of the second light source board 72 will be described. The board connector 74 is described as a "second light source board connector 742". The first light source board connector 741 and the second light source board connector 742 are connected to the power supply device 31 via power lines.

The first light source board connector 741 electrically connects with the plurality of first light sources 731 . An internal power supply voltage is supplied to the first light source 731 from the power supply section 3 through the first light source board connector 741 . The second light source board connector 742 electrically connects with the plurality of second light sources 732 . The second light source 732 is supplied with the internal power supply voltage from the power supply section 3 through the second light source board connector 742 . Each light source 73 emits light when an internal power supply voltage is supplied.

The light source cover 8 covers the light source section 7 . The light source cover 8 has a generally annular shape in plan view. The light source cover 8 is connected to the body chassis 61 so as to cover the light source section 7 . The light source cover 8 is connected to the main body chassis 61 by fastening members such as screws, for example. In this embodiment, the light source cover 8 diffuses the light emitted from the multiple light sources 73 . It is preferable that the light source cover 8 contains a material that prevents radio waves transmitted and received by the wireless communication unit 4 from being blocked. The light source cover 8 contains resin as a material, for example.

The shade 9 is detachably arranged on the second holding surface 61b of the main body chassis 61 via the metal fittings 62 . When the shade 9 is placed on the second holding surface 61b, the light source section 7 and the light source cover 8 are covered with the shade 9. As shown in FIG. It is preferable that the shade 9 contains a material that suppresses the radio waves transmitted and received by the wireless communication unit 4 from being blocked. The light source cover 8 contains resin as a material, for example.

The lighting fixture 100 further includes a cushioning member 100c. The buffer member 100c suppresses movement of the lighting fixture 100 with respect to the ceiling surface C. As shown in FIG. The cushioning member 100c suppresses rattling of the lighting fixture 100. As shown in FIG.

Next, the configuration of the main body chassis 61 according to the present embodiment will be described with reference to FIGS. 4 and 5. FIG. FIG. 4 is an exploded perspective view showing the power supply unit 3, wireless communication unit 4, wireless case 5, and main body chassis 61 according to this embodiment. FIG. 5 is a perspective view showing the adapter 2, power supply unit 3, wireless communication unit 4, wireless case 5, and main body chassis 61 according to this embodiment. Specifically, FIG. 5 is a diagram of the main body chassis 61 in which the adapter 2, the power supply unit 3, the wireless communication unit 4, and the wireless case 5 are arranged, as viewed obliquely from above.

As shown in FIG. 4 , the main body chassis 61 has an inner peripheral portion 613 , an intermediate portion 614 , an outer peripheral portion 615 , a first mounting portion 616 and a second mounting portion 617 in addition to an opening 611 and a housing space 612 . . The accommodation space 612 is configured by the first holding surface 61 a of the inner peripheral portion 613 and the first holding surface 61 a of the intermediate portion 614 .

Inner peripheral portion 613 extends outward in radial direction DR from opening 611 . Intermediate portion 614 extends outward in radial direction DR from the outer edge of inner peripheral portion 613 . Specifically, the shape of the intermediate portion 614 is an upward slope that becomes higher toward the outer side in the radial direction DR. The outer peripheral portion 615 extends outward in the radial direction DR from the outer edge of the intermediate portion 614 .

The first mounting portion 616 and the second mounting portion 617 are provided on the first holding surface 61 a of the inner peripheral portion 613 . The first mounting portion 616 has a flat mounting surface 616s.

As shown in FIG. 5, the wireless case 5 is attached to the first attachment portion 616 . The power supply case 32 is attached to the second attachment portion 617 .

Next, the configuration of the wireless communication unit 4 according to this embodiment will be described with reference to FIGS. 6(a) and 6(b). 6A and 6B are perspective views showing the configuration of the wireless communication unit 4 according to this embodiment. Specifically, FIG. 6( a ) shows one side of the wireless communication section 4 , and FIG. 6( b ) shows the other side of the wireless communication section 4 .

As shown in FIG. 6A, the wireless communication section 4 has a main body board 41, an antenna board 42, a switch button 43, a lamp 44, and a communication control circuit 45. As shown in FIG. Further, as shown in FIG. 6B, the wireless communication section 4 has a wireless board connector 46. As shown in FIG.

As shown in FIGS. 6A and 6B, the body substrate 41 has a first body substrate surface 41a and a second body substrate surface 41b opposite to the first body substrate surface 41a. An antenna substrate 42, a switch button 43, and a lamp 44 are arranged on the first main body substrate surface 41a. A wireless board connector 46 is arranged on the second main body board surface 41b.

Antenna board 42 includes antenna 423 . The antenna 423 transmits or receives radio waves used for wireless communication. The antenna substrate 42 has a first antenna substrate surface 42a and a second antenna substrate surface 42b opposite to the first antenna substrate surface 42a. The antenna 423 is provided on the second antenna substrate surface 42b. When the antenna substrate 42 is arranged on the first main substrate surface 41a, the first antenna substrate surface 42a and the first main substrate substrate surface 41a are parallel to each other. Specifically, the first antenna substrate surface 42a contacts the first main body substrate surface 41a. The second antenna substrate surface 42b is an example of an antenna mounting surface.

The antenna substrate 42 has an antenna area 421 . Antenna 423 is provided in antenna area 421 . The antenna area 421 has a substantially rectangular shape in plan view. The antenna 423 is, for example, a metal pattern formed on the antenna substrate 42 .

The switch button 43 is operated by the operator to reset the operation of the communication control circuit 45, for example.

The lamp 44 notifies the communication state or abnormal state of the communication control circuit 45 by blinking or lighting. Lamp 44 is, for example, an LED.

The communication control circuit 45 controls wireless communication. The communication control circuit 45 generates communication signals based on radio waves received by the antenna 423 .

The wireless board connector 46 is electrically connected to the power supply device 31 described with reference to FIG. 2 via signal lines and power lines. A communication signal generated by the communication control circuit 45 is transmitted to the power supply device 31 via the wireless board connector 46 and the signal line. The power control circuit controls power supplied by the power supply circuit based on the communication signal. As a result, the lighting state of the plurality of light sources 73 becomes a state corresponding to the communication signal.

The power control circuit also transmits a signal indicating the state of the power supply unit 3 to the wireless board connector 46 . The communication control circuit 45 causes the antenna 423 to generate a signal indicating the state of the power supply unit 3 . As a result, the communication device receives the signal indicating the state of the power supply unit 3 .

Next, the wireless communication unit 4 and the wireless case 5 according to this embodiment will be described with reference to FIGS. 1 to 8. FIG. 7A and 7B are diagrams showing the wireless communication unit 4 and the wireless case 5 according to this embodiment. Specifically, FIG. 7A shows a perspective view showing the wireless communication unit 4 and the wireless case 5. As shown in FIG. 7B is a plan view showing the wireless communication section 4 and the wireless case 5. FIG. FIG. 7(c) is a cross-sectional view taken along line VIIC--VIIC shown in FIG. 7(b). FIG. 8 is a diagram showing a cross section along line VIII-VIII shown in FIG.

As shown in FIGS. 7(a) to 7(c), the wireless communication unit 4 is accommodated in the wireless case 5. As shown in FIG. Specifically, as shown in FIG. 7B, the wireless case 5 has a case bottom surface 51 . As shown in FIG. 7C, the wireless communication unit 4 is accommodated in the wireless case 5 so that the second antenna substrate surface 42b faces the bottom surface 51 of the case. Specifically, the wireless communication unit 4 is accommodated in the wireless case 5 so that the second antenna substrate surface 42b is parallel to the bottom surface 51 of the case.

Further, the wireless communication unit 4 is housed in the wireless case 5 so as to form a first gap S1 between the second antenna substrate surface 42b and the case bottom surface 51. As shown in FIG.

As described with reference to FIG. 5, wireless case 5 is attached to first mounting portion 616 . Specifically, as shown in FIG. 8, the wireless case 5 is attached to the first attachment portion 616 so that the case bottom surface 51 is parallel to the attachment surface 616s. The wireless communication unit 4 is accommodated in the wireless case 5 such that the second antenna substrate surface 42b is parallel to the bottom surface 51 of the case. Therefore, when the wireless case 5 is attached to the first attachment portion 616, the second antenna substrate surface 42b and the attachment surface 616s become parallel.

Also, the mounting surface 616s is parallel to the first substrate surface 70a. Therefore, when the wireless case 5 is attached to the first attachment portion 616, the second antenna substrate surface 42b and the first substrate surface 70a are parallel.

A first gap S1 is formed between the second antenna substrate surface 42b and the bottom surface 51 of the case. Therefore, a second gap S2 is formed between the second antenna substrate surface 42b and the first holding surface 61a. Therefore, a gap greater than or equal to the second gap S2 is formed between the antenna 423 and the first holding surface 61a.

Next, the configuration of the main body chassis 61 according to this embodiment will be further described with reference to FIGS. 9 to 11. FIG. 9 and 10 are top views showing the first mounting portion 616 and its vicinity according to this embodiment. Specifically, FIG. 9 shows part of the main body chassis 61 in which the wireless case 5 is not attached to the first attachment portion 616 . FIG. 10 shows part of the main body chassis 61 with the wireless case 5 attached to the first attachment portion 616 . FIG. 11 is a diagram showing the relationship between the first radio wave passing area 601 and the antenna area 421 according to this embodiment.

As shown in FIG. 9, the main body chassis 61 further has a first radio wave passing area 601 . The first radio wave passing region 601 is a portion of the main body chassis 61 in which radio waves transmitted and received by the antenna 423 described with reference to FIGS. It is an easy area.

The first radio wave passing area 601 is provided in the inner peripheral portion 613 . The first radio wave passing area 601 includes a chassis through hole 601h and a hole edge 601f. The chassis through-hole 601h is an example of a second through-hole.

The chassis through-hole 601h penetrates the main chassis 61 . The shape of the chassis through hole 601h corresponds to the shape of the antenna region 421 described with reference to FIGS. 6(a) and 6(b). In this embodiment, the chassis through-hole 601h has a substantially rectangular shape.

The hole edge portion 601f constitutes the outer edge of the chassis through hole 601h. The hole edge portion 601f includes a first hole edge 601a, a second hole edge 601b, a third hole edge 601c, and a fourth hole edge 601d. The first hole edge 601a is the outer edge in the radial direction DR among the four edges forming the chassis through hole 601h. The second hole edge 601b faces the first hole edge 601a in the radial direction DR. The third hole edge 601c is the farthest edge from the power supply section 3 among the four edges forming the chassis through hole 601h. The fourth hole edge 601d faces the third hole edge 601c.

As shown in FIG. 10 , the first radio wave passing area 601 faces the antenna area 421 when the wireless case 5 is attached to the first attachment portion 616 .

Specifically, when the lighting fixture 100 is viewed from above, the projected image of the first radio wave passing area 601 (chassis through hole 601h) includes at least part of the antenna area 421 . In this embodiment, the projected image of the first radio wave passing area 601 is larger than the outline of the antenna area 421 and includes the entire area of the antenna area 421 .

As shown in FIG. 11, the first radio wave passing region 601 has a first overlapping region 601g (cross hatching) and a first peripheral region 601s (diagonal hatching). The first overlapping region 601g is a region that overlaps with the antenna region 421 when the lighting fixture 100 is viewed from above. The first peripheral region 601s is a region that does not overlap with the antenna region 421 and is formed around the first overlapping region 601g.

601 s of 1st peripheral edge areas are area|regions of the clearance gap between 601 g of 1st overlapping areas, and 601 f of hole edge parts, when the lighting fixture 100 is planarly viewed. Hereinafter, the gap between the first overlapping region 601g and the hole edge portion 601f is referred to as "main body gap HG". The body gap HG includes a first body gap HG1, a second body gap HG2, and a third body gap HG3. The first main body gap HG1 is the gap between the first overlapping region 601g and the first hole edge 601a. The second main body gap HG2 is the gap between the first overlapping region 601g and the third hole edge 601c. The third main body gap HG3 is the gap between the first overlapping region 601g and the fourth hole edge 601d. The sizes of the first body gap HG1, the second body gap HG2, and the third body gap HG3 are determined according to the specifications of the antenna 423. FIG. The first body gap HG1, the second body gap HG2, and the third body gap HG3 may all have the same size, or may have different sizes.

Next, the first light source substrate 71 and the second light source substrate 72 according to this embodiment will be described with reference to FIGS. 12 to 14. FIG. FIG. 12 is a plan view showing the first light source substrate 71 and the second light source substrate 72 according to this embodiment. Specifically, FIG. 12 shows the first substrate surface 70 a side of the first light source substrate 71 and the second light source substrate 72 .

As shown in FIG. 12, the first light source substrate 71 includes a second radio wave passing area 701 (diagonally hatched) and a pattern allowable area 702 . The second radio wave passing area 701 is an example of the first area. The pattern allowable area 702 is an example of a second area.

The second radio wave passing region 701 is a region of the first light source substrate 71 in which radio waves received by the antenna 423 described with reference to FIGS. It is an area that is easier to pass through.

The pattern allowable area 702 is an area of the first light source substrate 71 other than the second radio wave passing area 701 .

The pattern allowable area 702 includes a light source arrangement area 710 in which a plurality of first light sources 731 are arranged. The light source arrangement area 710 includes a first light source arrangement area 711 and a second light source arrangement area 712 . The first light source arrangement area 711 is provided outside the second light source arrangement area 712 in the radial direction DR. The first light source placement region 711 is provided along the outer circumference of the first light source substrate 71 . The second light source arrangement area 712 is provided along the inner circumference of the first light source substrate 71 . In this embodiment, the first light source arrangement area 711 and the second light source arrangement area 712 are provided in a semicircular shape on the first light source substrate 71 .

Each of the plurality of first light sources 731 includes a first light emitting element 731a or a second light emitting element 731b. In this embodiment, the first light emitting element 731a and the second light emitting element 731b are LED (Light Emitting Diode) elements. The correlated color temperature of light emitted by the first light emitting element 731a and the correlated color temperature of light emitted by the second light emitting element 731b are different from each other. Specifically, the correlated color temperature of the light emitted by the first light emitting element 731a is higher than the correlated color temperature of the light emitted by the second light emitting element 731b. The correlated color temperature of the light emitted by the first light emitting element 731a is, for example, 6500 Kelvin, and the correlated color temperature of the light emitted by the second light emitting element 731b is, for example, 2700 Kelvin.

Some of the plurality of first light emitting elements 731 a are arranged in the first light source arrangement area 711 and the rest of the plurality of first light emitting elements 731 a are arranged in the second light source arrangement area 712 . Some of the plurality of second light emitting elements 731b are arranged in the first light source arrangement area 711, and the rest of the plurality of second light emitting elements 731b are arranged in the second light source arrangement area 712. FIG. The first light emitting element 731a is arranged in the first light source arrangement region 711 so as to sandwich the second light emitting element 731b. In other words, in the first light source arrangement region 711, the first light emitting elements 731a and the second light emitting elements 731b are alternately arranged. Similarly, the first light emitting element 731a is arranged in the second light source arrangement region 712 so as to sandwich the second light emitting element 731b. In other words, in the second light source arrangement region 712, the first light emitting elements 731a and the second light emitting elements 731b are arranged alternately.

In this embodiment, the second radio wave passing region 701 is provided inside the first light source arrangement region 711 of the first light source substrate 71 in the radial direction DR and outside the second light source arrangement region 712 in the radial direction DR.

The second light source substrate 72 includes only the pattern allowable area 702 . In other words, the second light source substrate 72 does not include the second radio wave passing area 701 . The configuration of the second light source substrate 72 is substantially the same as that of the first light source substrate 71 except that it does not include the second radio wave passing region 701 .

Specifically, the pattern allowable area 702 of the second light source substrate 72 includes a light source placement area 710 . A plurality of second light sources 732 are arranged in the light source arrangement area 710 of the second light source substrate 72 . Specifically, the light source arrangement area 710 of the second light source substrate 72 includes a first light source arrangement area 711 and a second light source arrangement area 712 . Each of the plurality of second light sources 732 includes a first light emitting element 732a or a second light emitting element 732b. In embodiments, the first light emitting element 732a and the second light emitting element 732b are LED elements. The plurality of first light emitting elements 732 a and the plurality of second light emitting elements 732 b are dispersedly arranged in the first light source arrangement area 711 and the second light source arrangement area 712 .

As with the first light source arrangement region 711 of the first light source substrate 71 and the second light source arrangement region 712 of the first light source substrate 71 , the first light emitting element 732 a and the second light emitting element 732 b are arranged in the first light source substrate 72 of the second light source substrate 72 . They are arranged alternately in the light source arrangement area 711 . Also, the first light emitting elements 732 a and the second light emitting elements 732 b are alternately arranged in the second light source arrangement area 712 of the second light source substrate 72 .

Next, a second radio wave passing area 701 and a pattern allowable area 702 according to this embodiment will be described with reference to FIG. FIG. 13 is a diagram showing the second radio wave passing area 701 and its vicinity according to this embodiment. Specifically, FIG. 13 shows part of the first light source board 71 .

As shown in FIG. 13, the pattern allowable area 702 includes a conductive pattern forming area P (dotted hatching). A conductive pattern is formed in the conductive pattern forming region P. As shown in FIG. The conductive pattern is composed of a conductive member such as copper foil. The conductive pattern forming region P includes terminal portions 75 . The terminal portion 75 is provided with the first light source board connector 741 described with reference to FIG. The conductive pattern connects each light source 73 and the terminal portion 75 .

The second radio wave passing area 701 corresponds to the shape of the antenna area 421 described with reference to FIGS. 6(a) and 6(b). In other words, it corresponds to the shape of the first radio wave passing area 601 described with reference to FIGS. In this embodiment, the shape of the second radio wave passing area 701 is substantially rectangular.

The second radio wave passing area 701 has a boundary portion 701k. The boundary portion 701k includes a first boundary portion 701a, a second boundary portion 701b, a third boundary portion 701c, and a fourth boundary portion 701d. The first boundary portion 701 a is the outer boundary in the radial direction DR among the four boundaries forming the second radio wave passing area 701 . The second boundary portion 701b faces the first boundary portion 701a. The third boundary portion 701 c is the boundary on the terminal portion 75 side of the first light source substrate 71 among the four boundaries forming the second radio wave passing region 701 . The fourth boundary portion 701d faces the third boundary portion 701c.

The second radio wave passing area 701 does not include the conductive pattern forming area P. FIG. On the other hand, the pattern allowable area 702 (see FIG. 12) includes the conductive pattern forming area P. As shown in FIG.

Next, the second radio wave passing area 701 according to this embodiment will be described with reference to FIGS. 14 to 16. FIG. 14 and 15 are exploded perspective views showing configurations of the main body portion 6, the light source portion 7, and the light source cover 8 according to this embodiment. Specifically, FIG. 14 shows the main body portion 6, the light source portion 7, and the light source cover 8 as seen obliquely from below. FIG. 15 shows the main body portion 6, the light source portion 7, and the light source cover 8 as seen obliquely from above. FIG. 16 is a diagram showing the relationship between the second radio wave passing area 701 and the antenna area 421 according to this embodiment. In addition, in FIGS. 14 and 15, the second radio wave passing region 701 is indicated by diagonal hatching for easy understanding.

As shown in FIGS. 14 and 15, when the first light source board 71 is attached to the main body chassis 61, the second radio wave passing area 701 faces the first radio wave passing area 601 described with reference to FIG. . As described with reference to FIG. 10 , first radio wave passing area 601 faces antenna area 421 . Therefore, the second radio wave passing area 701 faces the antenna area 421 . In this embodiment, the shape of the second radio wave passing area 701 substantially matches the shape of the first radio wave passing area 601 . Also, the size of the second radio wave passing area 701 substantially matches the size of the first radio wave passing area 601 .

Therefore, as shown in FIG. 16 , the projected image of the second radio wave passing area 701 when the lighting fixture 100 is viewed from above includes at least part of the antenna area 421 . In this embodiment, the projected image of the second radio wave passing area 701 is larger than the antenna area 421 and includes the entire area of the antenna area 421 .

Specifically, the second radio wave passing region 701 has a second overlap region 701g (cross hatching) and a second peripheral region 701s (diagonal hatching). The second overlap region 701g is an example of the overlap region, and the second peripheral region 701s is an example of the peripheral region.

The second overlapping region 701g is a region that overlaps with the antenna region 421 when the lighting fixture 100 is viewed from above. The second peripheral region 701s is a region that does not overlap with the antenna region 421 and is formed around the second overlapping region 701g.

The second peripheral region 701s is a gap region between the second overlapping region 701g and the second peripheral region 701s when the lighting fixture 100 is viewed from above. Hereinafter, the gap between the second overlapping region 701g and the second peripheral edge region 701s is referred to as "substrate gap KG". The substrate gap KG includes a first substrate gap KG1, a second substrate gap KG2, and a third substrate gap KG3. The first substrate gap KG1 is the gap between the second overlap region 701g and the first boundary portion 701a. The second substrate gap KG2 is the gap between the second overlap region 701g and the third boundary portion 701c. The third substrate gap KG3 is the gap between the second overlap region 701g and the fourth boundary portion 701d. The sizes of the first substrate gap KG1, the second substrate gap KG2, and the third substrate gap KG3 are determined according to the specifications of the antenna 423. FIG. The first substrate gap KG1, the second substrate gap KG2, and the third substrate gap KG3 may all have the same size, or may have different sizes.

In this embodiment, the shape of the first overlap region 601g and the shape of the second overlap region 701g substantially match, and the size of the first overlap region 601g and the size of the second overlap region 701g substantially match.

The embodiment of the present invention has been described above. According to this embodiment, the two light source substrates 70 each have a first substrate surface 70a and a second substrate surface 70b. A plurality of light sources 73 are arranged on the first substrate surfaces 70 a of the two light source substrates 70 . The second substrate surface 70b is a surface opposite to the first substrate surface 70a. The wireless communication unit 4 is positioned on the second substrate surface 70b side of one of the two light source substrates 70 (the first light source substrate 71). Therefore, the wireless communication section 4 does not protrude below the two light source substrates 70 . As a result, the light emitted from the plurality of light sources 73 is prevented from being blocked by the wireless communication unit 4, and at least one of shadows and uneven light emission on the shade 9 when the lighting device 100 is turned on can be prevented.

Further, according to the present embodiment, the wireless communication section 4 does not protrude from the first substrate surface 70 a side of the first light source substrate 71 . Therefore, since the wireless communication unit 4 and the light source cover 8 do not interfere with each other, the vertical length of the light source cover 8 can be reduced. As a result, the vertical length of lighting device 100 (thickness of lighting device 100) can be reduced. Therefore, it is possible to reduce the thickness of the lighting device 100 .

Further, in this embodiment, the antenna area 421 faces the first radio wave passing area 601 and the second radio wave passing area 701 . Therefore, the radio waves transmitted and received by the antenna 423 are prevented from being blocked by the conductive patterns of the main body chassis 61 and the light source substrate 70 .

Further, in this embodiment, the first radio wave passing area 601 has a first peripheral area 601s. The first peripheral region 601s is a region that does not overlap the antenna region 421 when the lighting fixture 100 is viewed from above. Therefore, the radio waves received by the antenna 423 are prevented from being blocked by the main chassis 61 .

Further, in this embodiment, the second radio wave passing area 701 has a second peripheral area 701s. The second peripheral region 701s is a region that does not overlap the antenna region 421 when the lighting fixture 100 is viewed from above. Therefore, the radio waves transmitted and received by the antenna 423 are prevented from being blocked by the conductive pattern of the first light source substrate 71 .

Further, in this embodiment, the wireless communication unit 4 is arranged on the second substrate surface 70b side of the first light source substrate 71 . In other words, the wireless communication unit 4 is arranged on the side of the first light source substrate 71 that is not visible to the user of the lighting device 100 . Therefore, the aesthetic appearance of the lighting fixture 100 can be improved.

Further, in this embodiment, the wireless communication unit 4 is arranged on the second substrate surface 70b side of the first light source substrate 71 . This makes it difficult for foreign matter such as dust to adhere to the wireless communication unit 4 . As a result, it is possible to prevent the performance of the wireless communication unit 4 from deteriorating due to adhesion of foreign matter. For example, it is possible to suppress deterioration in the performance of transmitting and receiving radio waves due to adhesion of foreign matter. Also, failure of the wireless communication unit 4 can be suppressed.

In addition, in the present embodiment, the second radio wave passing area 701 is configured by an area of the light source substrate 70 in which no conductive pattern is formed. Therefore, the second radio wave passing area 701 can be provided by designing the substrate pattern without changing the shape of the light source substrate 70 . Therefore, the second radio wave passing area 701 can be easily provided on the first light source substrate 71 . Further, by providing the second radio wave passing area 701 by designing the conductive pattern, the degree of freedom of the shape of the second radio wave passing area 701 can be increased. Furthermore, the position of the second radio wave passing area 701 can be easily changed.

Further, in this embodiment, the main chassis 61 has a first radio wave passing area 601 . The first radio wave passing area 601 includes a hole penetrating the body chassis 61 . Therefore, the radio waves received by the antenna 423 are prevented from being blocked by the main chassis 61 .

Further, for example, when the second radio wave passing region 701 is provided outside the first light source placement region 711 in the radial direction DR, the second radio wave passing region is between the first light source placement region 711 and the outer edge of the lighting fixture 100. A space for providing 701 is required. As a result, the outer dimensions of the light source substrate 70 must be increased. In this embodiment, the second radio wave passing region 701 is arranged inside the first light source arrangement region 711 in the radial direction DR. Therefore, it is not necessary to change the external dimensions of each light source substrate 70 . Specifically, even when the second radio wave passing region 701 is provided on the light source substrate 70, it is not necessary to increase the external dimensions of the light source substrate 70. FIG. Therefore, an increase in size of the lighting device 100 can be suppressed.

Further, for example, when the second radio wave passing region 701 is provided outside the first light source placement region 711 in the radial direction DR, the second radio wave passing region is between the first light source placement region 711 and the outer edge of the lighting fixture 100. A space for providing 701 is required. As a result, the first light source placement region 711 cannot be placed near the outer edge of the lighting fixture 100 . According to this embodiment, the second radio wave passing region 701 is arranged inside the first light source arrangement region 711 in the radial direction DR. Thereby, the first light source arrangement area 711 can be arranged closer to the outer edge of the lighting device 100 . Therefore, the light emitted from the light source 73 can be diffused over a wide range.

Further, in this embodiment, the wireless communication unit 4 is arranged on the main body chassis 61 so that the second antenna substrate surface 42b of the antenna substrate 42 is parallel to the first substrate surface 70a of the light source substrate 70 . As a result, for example, compared to a configuration in which the wireless communication unit 4 is arranged so that the second antenna substrate surface 42b intersects the first substrate surface 70a (the configuration disclosed in Japanese Patent Application Laid-Open No. 2017-91958), the lighting fixture 100 can be made thinner.

In this embodiment, the power supply unit 3 is arranged inside the outer periphery of the light source substrate 70 in the radial direction DR, and the wireless communication unit 4 is arranged inside the outer periphery of the light source substrate 70 . Thereby, the distance between the power supply unit 3 and the wireless communication unit 4 can be shortened. Therefore, the connection work between the power supply unit 3 and the wireless communication unit 4 can be facilitated. As a result, the work efficiency of assembling the lighting device 100 is improved. Further, by shortening the distance between the power supply unit 3 and the wireless communication unit 4, the total length of wiring such as a signal line connecting the power supply unit 3 and the wireless communication unit 4 can be shortened. Therefore, the cost of the lighting fixture 100 can be reduced.

In addition, in the present embodiment, the antenna 423 has a gap (a gap equal to or greater than the second gap S2) between it and the main body chassis 61 in the vertical direction. Therefore, it is possible to prevent the radio waves received by the antenna 423 from being blocked by the main chassis 61 .

Further, in the present embodiment, the first light emitting elements 731a and the second light emitting elements 731b are alternately arranged in the light source arrangement region 710 . This suppresses the occurrence of uneven illuminance when only one of the first light emitting element 731a and the second light emitting element 731b is in the lighting state.

Similarly, in the light source arrangement region 710, the first light emitting elements 732a and the second light emitting elements 732b are arranged alternately. This suppresses the occurrence of illuminance unevenness when only one of the first light emitting element 732a and the second light emitting element 732b is in a lighting state.

In the present embodiment, the second radio wave passing area 701 is configured by the area of the light source substrate 70 in which the conductive pattern is not formed. may be configured by This prevents the radio waves received by the antenna 423 from being blocked by the light source substrate 70 . In addition, the light source through-hole is an example of the first through-hole.

Moreover, although the light source unit 7 has a plurality of light sources 73 in the present embodiment, the light source unit 7 may have only one light source 73 .

Moreover, although the light source unit 7 has two light source substrates 70 in the present embodiment, the number of light source substrates 70 included in the light source unit 7 may be one or three or more.

Also, in the present embodiment, the configuration in which the pattern allowable region 702 includes two light source arrangement regions 710 has been described, but the number of light source arrangement regions 710 may be one, or three or more.

Moreover, although the light source arrangement area 710 is annular in this embodiment, the light source arrangement area 710 may not be annular. Also, the light source arrangement regions 710 may be arranged in a dispersed manner on each light source substrate 70 .

Further, in the present embodiment, the case where the first light emitting element 731a, the second light emitting element 731b, the first light emitting element 732a, and the second light emitting element 732b are LED elements has been described. The light emitting element 731b, the first light emitting element 732a, and the second light emitting element 732b are not limited to LED elements. The first light emitting element 731a, the second light emitting element 731b, the first light emitting element 732a, and the second light emitting element 732b may be organic electro luminescence (EL) elements, for example.

Further, in the present embodiment, the case where the shape of the first overlapping region 601g and the shape of the second overlapping region 701g substantially match has been described, but the shape of the first overlapping region 601g and the shape of the second overlapping region 701g are different. can be different.

Further, in this embodiment, the case where the size of the first overlapping region 601g and the size of the second overlapping region 701g are substantially the same has been described, but the size of the first overlapping region 601g and the size of the second overlapping region 701g are different. can be different.

Further, in the present embodiment, the case where the relative color temperature of the light emitted by the first light emitting element 731a is different from the relative color temperature of the light emitted by the second light emitting element 731b has been described. The relative color temperature of the light emitted from the second light emitting element 731b may be the same as the relative color temperature of the light emitted from the second light emitting element 731b. Similarly, the relative color temperature of light emitted by the first light emitting element 732a and the relative color temperature of light emitted by the second light emitting element 732b may be the same.

Further, in the present embodiment, the case where the first light emitting elements 731a and the second light emitting elements 731b are alternately arranged in the light source arrangement region 710 has been described. It does not have to be placed in

Similarly, in the present embodiment, the case where the first light emitting elements 732a and the second light emitting elements 732b are alternately arranged in the light source arrangement region 710 has been described, but the first light emitting elements 732a and the second light emitting elements 732b They do not have to be alternately arranged.

The embodiments of the present invention have been described above with reference to the drawings (FIGS. 1 to 16). However, the present invention is not limited to the above-described embodiments, and can be implemented in various aspects without departing from the gist of the present invention. Moreover, the shapes and the like shown in the above embodiments are examples and are not particularly limited, and various modifications are possible without substantially departing from the effects of the present invention.

For example, although the embodiment of the present invention describes the case where the present invention is applied to a ceiling light, the present invention can also be applied to, for example, a base light or a downlight.

The invention is useful, for example, in the field of lighting fixtures.

3 Power supply unit 4 Wireless communication unit 6 Main unit (holding member)
31 Power supply device 42 Antenna substrate 42a First antenna substrate surface (antenna mounting surface)
61 body chassis (holding member body)
61a First holding surface 61b Second holding surface 70 Light source substrate 70a First substrate surface 70b Second substrate surface 71 First light source substrate 72 Second light source substrate 73 Light source 100 Lighting fixture 421 Antenna area 423 Antenna 601 First radio wave passing area 601h Chassis through hole (second through hole)
701 Second radio wave passing area (first area)
701g second overlap region (overlap region)
701s second peripheral region (peripheral region)
711 first light source arrangement area (light source arrangement area)

Claims (7)

a light source that emits light;
a light source substrate including a first region and a second region, on which the light source is arranged;
a wireless communication unit having an antenna for receiving radio waves;
a power supply unit that supplies power to the light source and the wireless communication unit;
with
A conductive pattern for supplying power to the light source is not formed in the first region,
The second region is formed with the conductive pattern,
The light source substrate has a first substrate surface on which the light source is arranged and a second substrate surface opposite to the first substrate surface,
The wireless communication unit is arranged on the second substrate surface side, and at least a part of the antenna overlaps with the first area,
The lighting fixture , wherein the power supply unit is arranged on the second substrate surface side and overlaps with the second area . 2. A lighting fixture according to claim 1 , wherein said first region is surrounded by said conductive pattern . further comprising a holding member holding the light source substrate and the wireless communication unit;
The holding member has a holding member main body and a second through hole passing through the holding member main body,
The holding member main body has a first holding surface and a second holding surface opposite to the first holding surface,
The wireless communication unit is arranged on the first holding surface side,
The light source substrate is arranged on the second holding surface side,
The lighting fixture according to claim 2, wherein the second through hole is provided at a position facing the first region. 4. The lighting fixture according to claim 3 , wherein said antenna has a gap with said first holding surface. the first substrate surface includes a light source arrangement area along the outer circumference of the light source substrate;
The light source is arranged in the light source arrangement area,
The lighting fixture according to any one of claims 2 to 4 , wherein the first area is arranged inside the light source arrangement area. The lighting fixture according to any one of claims 2 to 5 , wherein the first region includes an overlapping region overlapping at least part of the antenna and a peripheral region different from the overlapping region. The wireless communication unit has an antenna substrate including the antenna,
The antenna substrate has an antenna mounting surface on which the antenna is provided,
The lighting fixture according to any one of claims 1 to 6 , wherein the antenna mounting surface is parallel to the first substrate surface.

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