JP6986682B2 - Lighting equipment - Google Patents

Description

The present invention relates to a lighting device including a lighting unit and an acoustic unit.

Conventionally, for example, an electronic device including a lighting device and a speaker is known (see, for example, Patent Document 1). In such electronic devices, the lighting device and the speaker are integrated and mounted on the ceiling. The speaker provided in the electronic device is arranged substantially parallel to the light emitting surface on which the lighting device emits light.

Japanese Unexamined Patent Publication No. 2017-182920

By the way, when the electronic device is mounted on the ceiling, the sound emitted by the speaker goes to the floor surface, so that the sound is difficult to spread. Therefore, depending on the location of the user, it may be difficult to hear. Therefore, in order to spread the sound output from the speaker over a wide range, it is necessary to adopt a special structure, and the structure tends to be complicated.

Therefore, it is an object of the present disclosure to provide a lighting device having a simple structure and capable of increasing the spread of sound.

In order to achieve the above object, one aspect of the lighting device according to the present invention includes a lighting unit that emits light, an acoustic unit that emits sound, a housing that houses the lighting unit and the acoustic unit, and the lighting. A light guide plate extending toward the outside of the unit and a light source for incident light on the light guide plate are provided. The acoustic unit is arranged on the outer periphery of the lighting unit, and has acoustic directional properties. center direction, the illumination portion intersects the optical axis of the light emitted.

According to the present disclosure, it is possible to increase the spread of sound with a simple structure.

FIG. 1 is a perspective view showing a lighting device according to an embodiment. FIG. 2 is an exploded perspective view showing the lighting device according to the embodiment. FIG. 3 is a front view showing a schematic configuration of the lighting device when the lighting device according to the embodiment is viewed from the front. FIG. 4 is a perspective view showing an acoustic unit of the lighting device according to the embodiment. FIG. 5 is a cross-sectional view of the illuminating device when the cut surface including the VV line of FIG. 1 is viewed. FIG. 6 is a partial cross-sectional view of the illuminating device when the cut surface including the VI-VI line of FIG. 1 is viewed.

Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below show a specific example of the present invention. Therefore, the numerical values, shapes, materials, components, arrangement positions of the components, connection forms, and the like shown in the following embodiments are examples, and are not intended to limit the present invention. Therefore, among the components in the following embodiments, the components not described in the independent claims indicating the highest level concept of the present invention will be described as arbitrary components.

Further, the description of "abbreviated **" is intended to include not only a perfect rectangular shape but also a substantially rectangular shape, if it is explained by taking "substantially rectangular shape" as an example.

It should be noted that each figure is a schematic view and is not necessarily exactly illustrated. Further, in each figure, the same reference numerals are given to substantially the same configurations, and duplicate explanations may be omitted or simplified.

Hereinafter, the lighting device according to the embodiment of the present disclosure will be described.

(Embodiment)
[Overall configuration of lighting equipment]
FIG. 1 is a perspective view showing the lighting device 1 according to the embodiment. FIG. 2 is an exploded perspective view showing the lighting device 1 according to the embodiment.

Here, the lateral direction of the device main body 2 of the lighting device 1 is defined as the X-axis direction, the longitudinal direction of the device main body 2 is defined as the Y-axis direction, and the direction orthogonal to the X-axis direction and the Y-axis direction is Z. It is defined as the axial direction. Further, the side of the first light guide plate 3 with respect to the device main body 2 is defined as the X-axis plus direction, and the side of the first radio module 46 with respect to the first opening 20a of the lighting unit 20 is defined as the Y-axis plus direction. The side of the building material to be attached is defined as the Z-axis plus direction. In the present embodiment, the Z-axis direction is described as the vertical direction for convenience of explanation, but the Z-axis direction may not be the vertical direction depending on the usage mode of the lighting device 1.

As shown in FIGS. 1 and 2, the lighting device 1 includes an edge light type light guide plate, and is fixed to a building material such as a ceiling and a wall. Specifically, the lighting device 1 is fixed in a state of being electrically connected to an external power source such as a hook sealing 11 arranged on the construction material. The ceiling is substantially parallel to the XY plane.

The lighting device 1 includes a device main body 2, a first light guide plate 3, a second light guide plate 4, a first light-shielding member 5, a second light-shielding member 6, a translucent cover 7, and a pair of support members 8. It is equipped with.

The device main body 2 is a box-shaped body that is long in the Y-axis direction. The apparatus main body 2 includes an exterior cover 12, a pair of acoustic units 40, an illumination unit 20, a pair of lens covers 23, an illumination control unit 13, an illumination power supply unit 15, an acoustic control unit 16, and an acoustic power supply unit. It has 17.

As shown in FIG. 2, the exterior cover 12 is a rectangular box body long in the Y-axis direction, and is open in the Z-axis plus direction and the Z-axis minus direction. Specifically, the exterior cover 12 is entirely open on the Z-axis minus direction side, and the central portion is open in a substantially rectangular shape on the Z-axis plus direction side. The exterior cover 12 is an example of a housing.

Further, the exterior cover 12 includes a pair of acoustic units 40, a lighting unit 20, a first wireless module 46, a second wireless module 47, a first light-shielding member 5, a second light-shielding member 6, a lighting control unit 13, and a lighting power supply unit 15. , Accommodates the acoustic control unit 16, the acoustic power supply unit 17, and the like. The exterior cover 12 is a cover on the outside of the lighting device 1.

[Acoustic part]
The pair of acoustic units 40 are devices capable of outputting sound based on sound data included in a wireless signal transmitted from a terminal device. One of the acoustic parts 40 is housed in the accommodation space 12a located on the Y-axis positive end side of the exterior cover 12, and the other of the acoustic parts 40 is located on the Y-axis negative end side of the exterior cover 12. It is accommodated in the accommodation space 12a. That is, the acoustic unit 40 is arranged on the outer periphery of the illumination unit 20. Further, the acoustic unit 40 is arranged so as not to overlap the first light guide plate 3, the second light guide plate 4, and the illumination unit 20 when the lighting device 1 is viewed in a plan view. The terminal device is a remote controller or the like for operating the lighting device 1.

FIG. 3 is a front view showing a schematic configuration of the lighting device 1 when the lighting device 1 according to the embodiment is viewed from the front. FIG. 3 shows a state in which the translucent cover 7 described later and the cover body 42 described later are removed from the lighting device 1.

As shown in FIG. 3, the pair of acoustic units 40 include the illumination unit 20, the first light-shielding member 5, the second light-shielding member 6, the lighting control unit 13, the lighting power supply unit 15, the acoustic control unit 16 and the lighting unit 40 in the Y-axis direction. It is arranged so as to sandwich the acoustic power supply unit 17. One acoustic unit 40 is provided at the end of the exterior cover 12 in the plus direction of the Y axis, and the other acoustic unit 40 is provided at the end of the exterior cover 12 in the minus direction of the Y axis.

FIG. 4 is a perspective view showing an acoustic unit 40 of the lighting device 1 according to the embodiment. FIG. 5 is a cross-sectional view of the illuminating device 1 when the cut surface including the VV line of FIG. 1 is viewed.

As shown in FIG. 4, the acoustic unit 40 individually covers a pair of speakers 41, a pair of acoustic accommodating bodies 142, a pair of acoustic supports 141 that support each speaker 41, and a pair of speakers 41. It is provided with a cover body 42 of.

As shown in FIGS. 4 and 5, the pair of speakers 41 are attached to the acoustic support 141 in an inclined posture corresponding to the corresponding cover body 42, respectively. Specifically, the center line S of the directivity of the sound transmitted from the pair of speakers 41 is inclined with respect to the Z-axis direction. In other words, this center line S is substantially parallel to the normal direction of the bottom surface of each cover body 42. The center line S is inclined at an angle θ with respect to the Z-axis direction. The intersection of the center line S of one speaker 41 and the center line S of the other speaker 41 is formed on the Z-axis plus direction side of the lighting device 1. The angle θ is an angle between the optical axis J and the center direction substantially parallel to the center line S. The bottom surface of the cover body 42 is a surface on the negative direction side of the Z axis. The speaker 41 may be an example of an acoustic unit.

Each of the pair of speakers 41 is composed of, for example, a cone, a center cap, a voice coil, a yoke, a permanent magnet, and the like.

Further, the acoustic control unit 16 and the acoustic power supply unit 17 are electrically connected to the pair of speakers 41 via a cable (not shown). The pair of speakers 41 are supplied with electric power from the acoustic power supply unit 17 and output sound under the control of the acoustic control unit 16.

The pair of speakers 41 have a substantially rectangular shape when viewed in a plan view, and three of the four sides thereof are arranged close to the inner wall surface of the exterior cover 12. A cushioning material is provided between the three sides of the speaker 41 and the inner wall surface of the exterior cover 12. As the cushioning material, any material that can absorb the vibration of the speaker 41 can be adopted. The cushioning material is formed of an elastic body such as rubber or urethane. The vibration generated by the speaker 41 outputting sound is absorbed by the cushioning material. Therefore, the vibration caused by the speaker 41 may be transmitted to the exterior cover 12, the lighting unit 20 housed in the exterior cover 12, the first light guide plate 3 supported by the lighting unit 20, the second light guide plate 4, and the like. It is suppressed.

The pair of acoustic accommodating bodies 142 is a housing for accommodating a pair of speakers 41 on a one-to-one basis, and the negative direction side in the Z-axis direction is open as a whole. Specifically, the acoustic accommodating body 142 provided at the end in the plus direction of the Y axis accommodates the speaker 41 provided at the end in the plus direction of the Y axis, and is provided at the end in the minus direction of the Y axis. 142 accommodates a speaker 41 provided at an end in the minus direction of the Y axis. The pair of acoustic accommodating bodies 142 are fixed to the exterior cover 12 by fastening members.

The pair of acoustic supports 141 support each speaker 41 in an outwardly inclined posture with respect to the lighting device 1. That is, the pair of acoustic supports 141 can support the center line S of the directivity of the sound transmitted from the pair of speakers 41 in a posture of being tilted with respect to the vertical direction. The pair of acoustic supports 141 have a one-to-one correspondence with the pair of acoustic accommodating bodies 142, and together with the pair of speakers 41, cover a portion where the negative direction side in the Z-axis direction is open as a whole. Specifically, each of the pair of acoustic supports 141 has an inclined plate-shaped portion 141b and an inclined wall portion 141a, respectively. The posture of tilting outward here is a posture in which the center line S of the directivity of the sound transmitted from the pair of speakers 41 faces the side opposite to the side of the illumination unit 20.

The inclined plate-shaped portion 141b is a plate-shaped member having a substantially rectangular shape when viewed in a plan view. The inclined plate-shaped portion 141b is inclined in the horizontal direction, that is, with respect to the XY plane. An opening 141d is formed in a substantially central portion of the inclined plate-shaped portion 141b so that the center line S can be supported in an inclined posture with respect to the vertical direction in a state where the diaphragm of the speaker 41 is exposed. .. A speaker 41 is fitted in the opening 141d.

The inclined wall portion 141a is a wall that rises in a substantially Z-axis plus direction with respect to the inclined plate-shaped portion 141b. The inclined wall portion 141a is formed along the edge of the inclined plate-shaped portion 141b on the lens cover 23 side. A collar-shaped collar portion 141c projects from the tip edge of the inclined wall portion 141a. The flange portion 141c is fixed to the acoustic accommodating body 142 by a fastening member.

As a result, the pair of acoustic supports 141 support the pair of speakers 41 on a one-to-one basis. In other words, since the speaker 41 is fixed to the inclined plate-shaped portion 141b, it is supported in an outwardly inclined posture.

The pair of cover bodies 42 is, for example, a grill net of a speaker. Each of the pair of cover bodies 42 has a flat plate shape. One cover body 42 is provided at the end of the exterior cover 12 in the plus direction of the Y axis, and the other cover body 42 is provided at the end of the exterior cover 12 in the minus direction of the Y axis. The pair of cover bodies 42 sandwich the lighting unit 20, the first light-shielding member 5, the second light-shielding member 6, the lighting control unit 13, the lighting power supply unit 15, the acoustic control unit 16 and the acoustic power supply unit 17 in the Y-axis direction. Have been placed.

When the pair of cover bodies 42 are attached to the exterior cover 12, they are attached to the exterior cover 12 in an inclined posture so as to face outward when viewed from the X-axis direction. The pair of cover bodies 42 are supported by the pair of acoustic supports 141 in a one-to-one manner so as to be inclined outward with respect to the XY plane. As a result, the acoustic unit 40 is arranged so as to be inclined at an angle θ with respect to the light emitting surface 22 described later so that the central direction of the directivity of the acoustic intersects the optical axis J.

The bottom surface of each cover body 42 is inclined at an angle θ with respect to the XY plane. In other words, the bottom surface of each cover body 42 is inclined with respect to the light emitting surface 22. The angle θ is greater than 0 ° and less than or equal to 45 °. In particular, the angle θ is preferably 5 ° or more and 25 ° or less. In this embodiment, the angle θ is 12.5 °.

[Lighting unit]
As shown in FIG. 2, the illumination unit 20 has a long rectangular shape in the Y-axis direction. That is, the longitudinal direction of the illumination unit 20 is the Y-axis direction. The illumination unit 20 has a circular first opening 20a in the central portion. The first opening 20a is an opening for attachment, and the illumination unit 20 is attached to the hook sealing 11 via the first opening 20a. As a result, the lighting unit 20 and the hook sealing 11 are electrically connected. Further, the illumination unit 20 has a pair of light emitting modules 21 and an accommodating body 25. The lighting unit 20 does not have to have the housing body 25, and it is not an essential configuration requirement to have the housing body 25.

[Light emitting module]
The pair of light emitting modules 21 are fixed to the housing 25 by, for example, a fastening member 19 such as a screw. Specifically, the pair of light emitting modules 21 are arranged on the Y-axis positive direction side and the Y-axis negative direction side with respect to the first opening 20a so as to sandwich the first opening 20a. In this embodiment, two light emitting modules 21 are used, but one light emitting module 21 may be used.

FIG. 6 is a partial cross-sectional view of the illuminating device 1 when the cut surface including the VI-VI line of FIG. 1 is viewed. As shown in FIGS. 2 and 6, the light emitting module 21 has a substrate 120, a plurality of first light sources 121, a plurality of second light sources 122, and a plurality of wiring members 120a.

The substrate 120 has a rectangular plate shape that is long in the Y-axis direction. A plurality of first light sources 121 and a plurality of second light sources 122 are mounted on the substrate 120. The substrate 120 is installed in the accommodating body 25 of the lighting unit 20 so as to be substantially parallel to the XY plane. A wiring member 120a that supplies power to the plurality of first light sources 121 and the plurality of second light sources 122 is fixed to the substrate 120. The substrate 120 is electrically connected to the lighting control unit 13 and the lighting power supply unit 15 via a cable (not shown) connected to the wiring member 120a. In the present embodiment, the wiring member 120a is arranged between the first light source 121 and the second light source 122.

The substrate 120 may be thermally connected to a heat radiating portion (not shown) so as to dissipate the heat generated by the first light source 121 and the second light source 122. The heat radiating portion may be thermally connected to the exterior cover 12, and the exterior cover 12 may function as a heat sink.

The plurality of first light sources 121 are arranged on the substrate 120 so as to form a long matrix in the Y-axis direction. A part of the plurality of second light sources 122 is arranged along the Y-axis direction on the X-axis plus direction side with respect to the plurality of first light sources 121. On the other hand, the other plurality of second light sources 122 are arranged along the Y-axis direction on the X-axis minus direction side with respect to the plurality of first light sources 121. In other words, for the plurality of first light sources 121, the plurality of second light sources 122 arranged on the X-axis plus direction side and the plurality of second light sources 122 arranged on the X-axis minus direction side are plural. The first light source 121 is arranged on the substrate 120 so as to sandwich the first light source 121. The second light source 122 is an example of a light source. The first light source 121 may be an example of a light source.

Since the light emission direction of the first light source 121 and the second light source 122 is in the negative direction of the Z axis, the first light source 121 and the second light source 122 emit light in the negative direction of the Z axis. The light emission direction, that is, the optical axis J of each of the first light source 121 and the second light source 122 is substantially parallel to the Z-axis direction.

The first light guide plate 3 is arranged on the light emission direction side of the plurality of second light sources 122 arranged on the X-axis plus direction side. Further, the second light guide plate 4 is arranged on the light emission direction side of the plurality of second light sources 122 arranged on the minus direction side of the X axis. The second light source 122 on the plus direction side of the X-axis irradiates the incident surface of the first light guide plate 3 with light. Further, the second light source 122 on the minus direction side of the X-axis irradiates the incident surface of the second light guide plate 4 with light. The second light source 122 is arranged on the substrate 120 so that the light emission direction is directed to the negative direction of the Z axis. Specifically, the second light source 122 on the plus direction side of the X axis is arranged so that the optical axis J is substantially orthogonal to the incident surface of the first light guide plate 3 and faces the incident surface. Further, the second light source 122 on the minus direction side of the X-axis is arranged so that the optical axis J is substantially orthogonal to the incident surface of the second light guide plate 4 and faces the incident surface. That is, the second light source 122 is substantially perpendicular to the incident surfaces of the first light guide plate 3 and the second light guide plate 4.

Further, a gap is provided between the second light source 122 and the first light guide plate 3 and the second light guide plate 4 so that the second light source 122 and the first light source plate 3 and the second light guide plate 4 do not come into contact with each other. ing.

The first light source 121 and the second light source 122 are so-called SMD (Surface Mount Devices) type LED elements. The SMD type LED element is specifically a package type LED element in which an LED chip (light emitting element) is mounted in a resin-molded cavity and a phosphor-containing resin is enclosed in the cavity. For example, a surface mount type LED element that emits white light by combining a blue LED chip and a yellow phosphor-containing resin is adopted as the first light source 121 and the second light source 122.

The first light source 121 and the second light source 122 are controlled by the lighting control unit 13 to turn on and off. Further, the first light source 121 and the second light source 122 are controlled by the illumination control unit 13 to perform dimming and toning.

The first light source 121 and the second light source 122 are not limited to such a configuration, and a COB (Chip On Board) type module in which an LED chip is directly mounted on the substrate 120 may be used. .. Further, the light emitting element included in the first light source 121 and the second light source 122 is not limited to the LED, and is, for example, a semiconductor light emitting element such as a semiconductor laser, an EL element such as an organic EL (ElectroLuminescence) or an inorganic EL, or the like. It may be a solid-state light emitting element.

Since the light emitting module 21 on the other side has the same configuration, the description thereof will be omitted.

[Lens cover]
As shown in FIGS. 2 and 3, the pair of lens covers 23 are arranged on the Y-axis plus direction side and the Y-axis minus direction side with respect to the first opening 20a so as to sandwich the first opening 20a, respectively. ing. The lens cover 23 is fixed by the substrate 120, the first light-shielding member 5, and the second light-shielding member 6. The lens cover 23 has a rectangular plate shape that is long in the Y-axis direction, and is made of a transparent resin material such as acrylic or polycarbonate that has translucency.

The lens cover 23 is a lens that controls the light distribution of the light emitted by the plurality of first light sources 121, and has a plurality of lenses. The lens cover 23 is arranged in the light emitting module 21 so as to cover the plurality of first light sources 121. Specifically, when the lens cover 23 and the plurality of first light sources 121 are viewed in a plan view, the individual lenses formed on the lens cover 23 have a one-to-one correspondence with each of the first light sources 121. Each lens of the lens cover 23 controls the light distribution angle of the transmitted light when the light emitted from each of the corresponding first light sources 121 is transmitted.

Further, a notch 231 is provided at each outer end portion of the pair of lens covers 23. Specifically, the lens cover 23 on the Y-axis plus direction side is provided with a notch 231 at the end portion on the Y-axis plus direction side. The lens cover 23 on the minus direction side of the Y axis is provided with a notch 231 at the end on the minus direction side of the Y axis. The notch 231 is formed in a planar viewing table shape, for example, having a small width on the side of the first opening 20a and a large width on the opposite side.

These pair of lens covers 23 control the light distribution emitted by the plurality of first light sources 121 to emit light. Since each of the pair of lens covers 23 is long in the Y-axis direction, the light emitting surface 22 of the translucent cover 7 is also provided long in the Y-axis direction. As described above, since the pair of speakers 41 and the pair of cover bodies 42 are arranged so as to sandwich the illumination unit 20 in the Y-axis direction, the pair of speakers 41 and the light emitting surface 22 form a flat surface of the illumination device 1. It does not overlap when viewed.

[Container]
As shown in FIGS. 2 and 6, the accommodating body 25 includes a first accommodating portion 251 and a second accommodating portion 252. The first housing unit 251 is a housing that houses a pair of light emitting modules 21, a pair of lens covers 23, a first radio module 46, and a second radio module 47. Specifically, the first accommodating portion 251 is a long and flat housing in the Y-axis direction, and the negative direction side in the Z-axis direction is open as a whole. The first accommodating portion 251 is arranged on the Z-axis minus direction side of the second accommodating portion 252.

A pair of light emitting modules 21 are fixed to the first accommodating portion 251 by a plurality of fastening members 19. Further, a pair of lens covers 23 are fixed to the first accommodating portion 251 via a first light-shielding member 5, a second light-shielding member 6, and a pair of light-emitting modules 21. Further, an opening 253a forming a part of the first opening 20a is formed in the central portion of the first accommodation portion 251.

The second accommodating unit 252 is a housing that accommodates the lighting control unit 13, the lighting power supply unit 15, the acoustic control unit 16, and the acoustic power supply unit 17. Specifically, the second accommodating portion 252 is a substantially rectangular parallelepiped housing that is long in the Y-axis direction, and the negative direction side in the Z-axis direction is open as a whole. The open portion of the second containment 252 is covered by the first containment 251.

A first circuit board 260 for the lighting unit 20 and a second circuit board 270 for the acoustic unit 40 are fixed to the second accommodating unit 252.

A plurality of circuit components forming the lighting control unit 13 and the lighting power supply unit 15 are mounted on the first circuit board 260 for the lighting unit 20. A plurality of circuit components forming the acoustic control unit 16 and the acoustic power supply unit 17 are mounted on the second circuit board 270 for the acoustic unit 40. Examples of the plurality of circuit components include electrolytic capacitors, coils, transformers, noise filters, ceramic capacitors, resistance elements, semiconductor elements, and the like.

[First wireless module, second wireless module]
As shown in FIG. 3, the first radio module 46 is arranged in the notch 231 of the lens cover 23 on the Y-axis plus direction side. The first wireless module 46 is a wireless module that receives a wireless signal for the lighting unit 20. The first wireless module 46 is electrically connected to the first circuit board 260 for the lighting unit 20 via wiring (not shown). As a result, the radio signal received by the first radio module 46 is transmitted to the lighting control unit 13 on the first circuit board 260.

The second radio module 47 is arranged in the notch 231 of the lens cover 23 on the negative direction side of the Y axis. The second radio module 47 is a radio module that receives a radio signal for the acoustic unit 40. The second wireless module 47 is electrically connected to the second circuit board 270 for the acoustic unit 40 via wiring (not shown). As a result, the radio signal received by the second radio module 47 is transmitted to the acoustic control unit 16 on the second circuit board 270.

The radio communication adopted in the first radio module 46 and the second radio module 47 is communication using radio waves (that is, excluding visible light and infrared light). The first wireless module 46 and the second wireless module 47 perform wireless communication based on a wireless communication standard such as Wi-Fi (registered trademark), Bluetooth (registered trademark), BLE or ZigBee (registered trademark).

The first wireless module 46 includes a capsule-shaped housing and a wireless receiving unit (not shown) housed in the housing. The wireless receiving unit of the first wireless module 46 receives the wireless signal transmitted from the operation terminal for operating the lighting device 1 and outputs it to the lighting control unit 13.

The second wireless module 47 includes a capsule-shaped housing and a wireless receiving unit (not shown) housed in the housing. The wireless receiving unit of the second wireless module 47 receives the wireless signal transmitted from the operation terminal and outputs it to the acoustic control unit 16.

Here, the operation terminal may be any device as long as it is capable of wireless communication, and examples thereof include a mobile terminal such as a smartphone and a wireless remote controller. The operation terminal outputs a wireless signal for the lighting unit 20. The radio signal for the lighting unit 20 is a signal for controlling the lighting unit 20. The radio signal for the lighting unit 20 may include, for example, a lighting instruction for turning on the first light source 121 and the second light source 122, an extinguishing instruction for turning off the first light source 121 and the second light source 122, or a first light source. It includes an instruction to select a dimming ratio or a color temperature (light color) of the light source 121 and the second light source 122.

Further, the operation terminal outputs a radio signal for the acoustic unit 40. The radio signal for the acoustic unit 40 is a signal for controlling the acoustic unit 40. The wireless signal for the sound unit 40 includes, for example, a start instruction for starting the speaker 41, a stop instruction for stopping the speaker 41, a volume instruction for adjusting the volume, sound data output by the speaker 41, and the like. included.

Further, the first radio module 46 and the second radio module 47 are arranged in the first accommodating portion 251. Specifically, the first radio module 46 is arranged in the notch 231 of the lens cover 23 on the Y-axis plus direction side, and is close to the wall portion on the Y-axis plus direction side. On the other hand, the second radio module 47 is arranged in the notch 231 of the lens cover 23 on the negative direction side of the Y axis, and is close to the wall portion on the negative direction side of the Y axis. As described above, the first wireless module 46 and the second wireless module 47 are arranged at positions facing each other with the pair of lens covers 23 sandwiched in the Y-axis direction. As a result, the light emitted from the pair of lens covers 23 is suppressed from being blocked by the first radio module 46 and the second radio module 47. Further, since the first wireless module 46 and the second wireless module 47 are arranged as far apart as possible in the first accommodating portion 251 with the wireless signal for the lighting unit 20 received by the first wireless module 46. , The radio signal for the acoustic unit 40 received by the second radio module 47 is less likely to interfere with the radio signal.

[Lighting control unit]
As shown in FIGS. 2 and 3, the lighting control unit 13 is electrically connected to the first light source 121, the second light source 122, and the first radio module 46. The lighting control unit 13 can control the dimming control and the toning control of the light emitted from the first light source 121 and the second light source 122 by controlling the lighting circuit unit of the first light source 121 and the second light source 122, for example. can. The lighting control unit 13 controls the first light source 121 and the second light source 122 based on the radio signal for the lighting unit 20 received by the first radio module 46. For example, the lighting control unit 13 lights only the plurality of first light sources 121 on the Y-axis plus direction side, lights only the plurality of first light sources 121 on the Y-axis minus direction side, and lights only all the first light sources 121. Lighting unit 20 lights only a plurality of second light sources 122 arranged on the plus direction side of the X axis, lights only a plurality of second light sources 122 arranged on the minus direction side of the X axis, or lights by a combination thereof. Can be controlled based on the radio signal for.

The lighting control unit 13 can be configured by using, for example, a microcomputer equipped with a CPU (Central Processing Unit). The lighting control unit 13 can perform a predetermined lighting control operation by, for example, executing an appropriate program stored in the storage unit. The storage unit can be configured by using, for example, a flash memory or a non-volatile semiconductor memory such as EEPROM (Electrically Erasable and Programmable Road Only Memory).

[Acoustic control unit]
Further, the acoustic control unit 16 controls the speaker 41 based on the radio signal for the acoustic unit 40 received by the second radio module 47. For example, the acoustic control unit 16 controls the speaker 41 based on the sound data included in the wireless signal and the volume instruction, so that the sound is output from the speaker 41.

The acoustic control unit 16 can be configured by using, for example, a microcomputer equipped with a CPU. The acoustic control unit 16 can perform a predetermined acoustic control operation by, for example, executing an appropriate program stored in the storage unit. The storage unit can be configured by using, for example, a non-volatile semiconductor memory such as a flash memory or EEPROM. The acoustic control unit 16 may include an amplifier circuit that amplifies sound data.

[Lighting power supply]
The lighting power supply unit 15 has a drive circuit driven by electric power from the outside, a cable for supplying electric power for causing the light emitting module 21 to emit light, and the like. The lighting power supply unit 15 supplies electric power to the light emitting module 21 via a cable.

[Acoustic power supply]
The acoustic power supply unit 17 has a drive circuit driven by electric power from the outside, a cable for supplying electric power for driving a pair of speakers 41, and the like. The acoustic power supply unit 17 supplies electric power to the pair of speakers 41 via a cable.

[Light guide plate]
As shown in FIGS. 3 and 6, the first light guide plate 3 is arranged on the X-axis plus direction side of the plurality of first light sources 121. One end of the first light guide plate 3 on the minus direction side of the X axis is fixed in the exterior cover 12 and is supported so as to be substantially parallel to the XY plane. The first light guide plate 3 is a plate material long in the Y-axis direction, and is an optical member that guides light from a plurality of second light sources 122 arranged on the X-axis plus direction side of the first light source 121. The first light guide plate 3 is a translucent member such as a resin such as acrylic or polycarbonate or glass, but may be made of any other material as long as it is translucent. The shape of the first light guide plate 3 is not limited to a rectangular shape, but may be a disk shape or another shape such as a polygonal shape. The first light guide plate 3 is an example of a light guide plate.

The first light guide plate 3 has a curved portion 31, a flat plate portion 35, and a plurality of engaging portions 39.

The curved portion 31 is a portion of the first light guide plate 3 on the one end side in the minus direction of the X axis, and is elongated in the Y axis direction along the lens cover 23. The curved portion 31 is curved in a substantially arc shape from the second light source 122 side in a cross-sectional view when cut in the XZ plane. The curved portion 31 guides the light emitted by the second light source 122 toward the flat plate portion 35.

The engaging portion 39 projects from the end of the curved portion 31 on the first light source 121 side. The engaging portion 39 is fastened together with the first light shielding member 5, the first light guide plate 3, and the light emitting module 21 by the fastening member 19.

The flat plate portion 35 is a plate-shaped portion that illuminates the periphery of the flat plate portion 35 by guiding and emitting light that has passed through the curved portion 31. The flat plate portion 35 is held substantially parallel to the XY plane. The flat plate portion 35 extends outward from the long edge of the apparatus main body 2. Further, the flat plate portion 35 is a rectangular plate-shaped flat plate that is long in the Y-axis direction.

The flat plate portion 35 has a prism surface 35a and an exit surface 35b.

The prism surface 35a is a surface of the flat plate portion 35 on the Z-axis plus direction side. The prism surface 35a is substantially parallel to the XY plane. The prism surface 35a is a surface formed so that the light guided by the flat plate portion 35 is reflected toward the emission surface 35b side. Specifically, a plurality of prisms recessed in the negative direction of the Z axis are formed on the prism surface 35a. The prism may have, for example, a conical shape, a pyramidal shape, a truncated cone shape, a pyramidal trapezoidal shape, a hemispherical shape, or the like. The prism surface 35a may not only reflect light but also emit light that illuminates a ceiling or the like, for example. Further, the prism surface 35a can be formed by cutting, printing, or the like.

The emission surface 35b is a surface of the flat plate portion 35 on the negative direction side of the Z axis, and is a surface opposite to the prism surface 35a. The emission surface 35b is a plane substantially parallel to the XY plane. The emission surface 35b emits light that illuminates, for example, a floor, a wall, or the like.

The second light guide plate 4 is arranged on the X-axis negative direction side of the plurality of first light sources 121. One end of the second light guide plate 4 on the minus direction side of the X axis is fixed in the exterior cover 12 and is supported so as to be substantially parallel to the XY plane. The second light guide plate 4 has a long plate shape in the Y-axis direction, and is an optical member that guides light from the second light source 122 arranged on the X-axis minus direction side of the first light source 121. The second light guide plate 4 is an example of a light guide plate.

The second light guide plate 4 has a configuration symmetrical to that of the first light guide plate 3 with respect to the YZ plane passing through the center of the apparatus main body 2. That is, the first light guide plate 3 and the second light guide plate 4 extend outward from each of the pair of long edges facing each other in the apparatus main body 2. In other words, the first light guide plate 3 and the second light guide plate 4 are arranged so as to sandwich the lighting unit 20 when the lighting device 1 is viewed in a plan view. The first light guide plate 3 and the second light guide plate 4 exist on substantially the same XY plane. For this reason, the same reference numerals are used for the portions of the second light guide plate 4 that are equivalent to those of the first light guide plate 3, and other description thereof will be omitted.

As shown in FIG. 3, the first light guide plate 3 and the second light guide plate 4 do not overlap with the acoustic unit 40 when the lighting device 1 is viewed in a plan view. Therefore, the light emitted from each of the first light guide plate 3 and the second light guide plate 4 is not blocked by the acoustic unit 40. Further, the sound output from the acoustic unit 40 is not blocked by the first light guide plate 3 and the second light guide plate 4.

[Support member]
As shown in FIGS. 2 and 3, the support member 8 is a long plate material along the Y-axis direction, and is a member that supports the flat plate portion 35 of the first light guide plate 3 to the illumination unit 20. The support member 8 is arranged on the exit surface 35b side of the flat plate portion 35. When a screw (not shown) is inserted into and fastened to the support member 8 and the through hole of the second accommodating portion 252, the support member 8 and the second accommodating portion 252 sandwich the flat plate portion 35 of the first light guide plate 3. .. As a result, the support member 8 supports the first light guide plate 3 from below, so that the posture of the first light guide plate 3 is maintained.

[Shading member]
The first light-shielding member 5 is arranged between the curved portion 31 of the first light guide plate 3 and the plurality of first light sources 121 so that the light emitted by the plurality of first light sources 121 does not enter the first light guide plate 3. Has been done. The first light-shielding member 5 is elongated in the Y-axis direction along the first light guide plate 3 and the lens cover 23. The first light-shielding member 5 shields light emitted from the curved portion 31 of the first light guide plate 3. Further, the first light-shielding member 5 has a light reflection function of reflecting light. The first light-shielding member 5 is made of a non-transmissive white resin such as polybutylene terephthalate. Further, the first light-shielding member 5 may be formed by coating a resin material such as acrylic or polycarbonate with a white resin. The first light-shielding member 5 may have a light diffusing function.

The other second light-shielding member 6 has a configuration symmetrical to the first light-shielding member 5 with respect to the YZ plane passing through the center of the apparatus main body 2, so that the portion equivalent to the first light-shielding member 5 is provided. Uses the same reference numerals and omits other explanations.

[Translucent cover]
As shown in FIGS. 2 and 6, the translucent cover 7 is arranged on the Z-axis minus direction side of the apparatus main body 2. The translucent cover 7 is a cover member that covers a plurality of first light sources 121 when the lighting device 1 is viewed from the Z-axis direction, and has a translucency in which light emitted from the plurality of first light sources 121 is transmitted. The translucent cover 7 has a rectangular shape that is long in the Y-axis direction. The translucent cover 7 is made of a translucent resin such as acrylic or polycarbonate or a translucent material such as glass. The translucent cover 7 may further have light diffusivity. That is, the translucent cover 7 may be a diffusion cover having translucency and light diffusivity instead of the transparent cover. In this case, the translucent cover 7 can be a milky white diffusing panel in which the light diffusing material is dispersed inside. Such a diffusion cover can be produced by resin-molding a translucent resin material mixed with a light-diffusing material into a predetermined shape. As the light diffusing material, light-reflecting fine particles such as silica particles can be used.

The translucent cover 7 has a light emitting surface 22 substantially perpendicular to the optical axis J of the emitted light. The light emitting surface 22 is a surface on the Z-axis minus direction side of the translucent cover 7 arranged in the Z-axis minus direction of the illumination unit 20, and is a surface on which the light transmitted through the translucent cover 7 is emitted. The light emitting surface 22 is substantially parallel to the XY plane. The optical axis J is an optical axis of light emitted by the illuminating device 1, and may be, for example, the optical axis of each of the plurality of first light sources 121 and the plurality of second light sources 122, and is emitted from the translucent cover 7. It may be the optical axis of light, or it may be the optical axis of light emitted from each emission surface 35b of the first light source plate 3 and the second light source plate 4. The optical axis J is substantially parallel to the Z-axis direction.

The light emitting surface 22 may be the surface on the negative side of the Z axis when the lens cover 23 is viewed in a plan view. Further, the light emitting surface 22 may be the light emitting surface of the light emitting elements of the plurality of first light sources 121 provided in the pair of light emitting modules 21. When the light emitting element of the first light source 121 is used as the light emitting surface, the plurality of first light sources 121 may be arranged in a matrix on the substrate 120, and the light emitting elements constituting each of them may form the light emitting surface 22. .. Further, even when the light emitting element of the second light source 122 is used as the light emitting surface, the plurality of second light sources 122 are arranged in a matrix on the substrate 120, and the light emitting elements constituting each of them form the light emitting surface 22. good.

The translucent cover 7 has a first translucent cover 70 and a second translucent cover 80.

The first translucent cover 70 is an outer cover member when the lighting device 1 is viewed from the Z-axis direction. The first translucent cover 70 has a rectangular plate shape that is long in the Y-axis direction. The first translucent cover 70 has a plurality of locking pieces (not shown), and the plurality of locking pieces engage the second translucent cover 80 to hold the second translucent cover 80. ing. The first translucent cover 70 is substantially parallel to the XY plane and is substantially parallel to the light emitting surface 22.

The second translucent cover 80 is arranged between the first translucent cover 70 and the apparatus main body 2. The second translucent cover 80 has a cover frame portion 81 and an inclined portion 83 inclined along the curved portion 31 from the inside of the cover frame portion 81.

The cover frame portion 81 is a rectangular plate-shaped frame body long in the Y-axis direction, and is engaged with a plurality of locking pieces of the first translucent cover 70. The inclined portion 83 is formed on the inner edge side of the cover frame portion 81, and is elongated in the Y-axis direction along the cover frame portion 81. The inclined portion 83 is curved in an arc shape along the first light-shielding member 5 and the second light-shielding member 6 when the cross section cut in the ZX plane is viewed.

[motion]
The lighting device 1 executes lighting and sound output desired by the user based on the radio signal for the lighting unit 20 and the radio signal for the sound unit 40 transmitted from the operation terminal.

First, the operation at the time of lighting in the lighting device 1 will be described.

The lighting control unit 13 controls the first light source 121 and the second light source 122 based on the radio signal for the lighting unit 20 received by the first radio module 46. The light emitted from the plurality of first light sources 121 is controlled by the lens of the lens cover 23 to transmit light through the translucent cover 7, and travels in the Z-axis direction of the lighting device 1. Further, the light emitted from the plurality of second light sources 122 on the Y-axis plus direction side and the Y-axis minus direction side is incident on the incident surfaces of the first light guide plate 3 and the second light guide plate 4, and the curved portion 31 and the curved portion 31 The flat plate portion 35 is guided. In the curved portion 31, the light reflected by the outer surface of the curved portion 31 or reflected by the first light-shielding member 5 and the second light-shielding member 6 even if emitted from the outer surface is incident. A part of the light that guides the flat plate portion 35 is reflected by the prism surface 35a, heads toward the emission surface 35b, and is emitted from the emission surface 35b. In this way, in this lighting device 1, the surroundings can be illuminated by emitting illumination light from each of the translucent cover 7, the first light guide plate 3, and the second light guide plate 4.

Next, the operation at the time of sound output in the lighting device 1 will be described. The acoustic control unit 16 controls the speaker 41 based on the radio signal for the acoustic unit 40 received by the second radio module 47. Sound based on sound data is output from the pair of speakers 41. At the time of sound output, vibration caused by the sound is generated from the pair of speakers 41. This vibration is also transmitted to the lighting unit 20. For example, when the vibration from the pair of speakers 41 is transmitted unevenly to the illuminating unit 20, the illuminating unit 20 also vibrates greatly, and the illuminating light also fluctuates greatly. However, in the present embodiment, since the center of gravity of the pair of speakers 41 is arranged in the first opening 20a when the first opening 20a is viewed in a plan view, the pair of speakers 41 illuminate each other. The vibration is transmitted to the portion 20 almost evenly. As a result, the illumination unit 20 is relatively less likely to shake, and the illumination light with less fluctuation can be obtained. In particular, in the present embodiment, the center of gravity of the entire lighting device 1 is arranged in the first opening 20a when the first opening 20a is viewed in a plan view, so that the entire lighting device 1 can be used as a building material in a well-balanced manner. It is installed and has a support structure that does not easily shake. Therefore, the vibration caused by the sound from the speaker 41 is less likely to be affected by the illumination unit 20.

[Action effect]
Next, the operation and effect of the lighting device 1 in the present embodiment will be described.

As described above, the lighting device 1 according to the present embodiment includes a lighting unit 20 that emits light, an acoustic unit 40 that emits sound, and an exterior cover 12 that houses the lighting unit 20 and the acoustic unit 40. The acoustic unit 40 is arranged on the outer periphery of the illumination unit 20, and the central direction of the directivity of the sound intersects with the optical axis J of the light emitted by the illumination unit 20.

In this way, the acoustic unit 40 is arranged on the outer periphery of the illumination unit 20. Further, the acoustic unit 40 is arranged so as to be inclined at an angle θ with respect to the light emitting surface 22 so that the central direction (center line S) of the directivity of the acoustic intersects the optical axis J. Therefore, the sound output from the acoustic unit 40 is more likely to spread to the outside of the lighting device 1 as compared with the case where the acoustic unit 40 is arranged substantially parallel to the light emitting surface 22. Further, since the sound can be spread outward from the lighting device 1 only by arranging the acoustic unit 40 at an angle, the structure of the lighting device 1 is less likely to be complicated.

Therefore, in this lighting device 1, it is possible to increase the spread of sound with a simple structure.

In particular, when the lighting device 1 is arranged indoors, the center line S of the acoustic unit 40 is tilted with respect to the optical axis J, so that the conventional directivity center line S is oriented in the vertical direction. Compared with the above, the sound is easily transmitted to the user existing in the vicinity of the lighting device 1. When the lighting device 1 is arranged in the center of the room, the sound can be spread more effectively.

Further, in the lighting device 1 according to the present embodiment, the angle θ between the central direction and the optical axis J is larger than 0 ° and 45 ° or less.

In this way, by setting the angle θ to be larger than 0 ° and 45 ° or less, the sound can be spread over a wider range.

Further, in the lighting device 1 according to the present embodiment, the angle θ between the central direction and the optical axis J is 5 ° or more and 25 ° or less.

In this way, by setting the angle θ between the center direction and the optical axis J to 5 ° or more and 25 ° or less, the sound can be spread over a wider range.

Further, in the lighting device 1 according to the present embodiment, the acoustic unit 40 is arranged in a posture of tilting outward with respect to the lighting device 1.

In this way, since the acoustic unit 40 is arranged in a posture of tilting outward with respect to the lighting device 1, the sound easily spreads to the outside of the lighting device 1.

Further, the lighting device 1 according to the present embodiment further includes a first light source plate 3 and a second light source plate 4 extending toward the outside of the lighting unit 20, a first light source plate 3 and a second light source plate. A second light source 122 for incident light on the fourth light source 122 is provided.

According to this, even in the lighting device 1 provided with the first light guide plate 3 and the second light guide plate 4, it is possible to suppress the interference between the radio signal for the lighting unit 20 and the radio signal for the sound unit 40. can.

Further, in the lighting device 1 according to the present embodiment, the light guide plate is provided with a pair of the first light guide plate 3 and the second light guide plate 4. The first light guide plate 3 and the second light guide plate 4 are arranged so as to sandwich the lighting unit 20 when the lighting device 1 is viewed in a plan view.

According to this, even in the lighting device 1 provided with the first light guide plate 3 and the second light guide plate 4 facing each other across the lighting unit 20, the wireless signal for the lighting unit 20 and the wireless signal for the acoustic unit 40 Interference with can be suppressed.

Further, in the lighting device 1 according to the present embodiment, the lighting unit 20 has a long shape. Further, a pair of acoustic units 40 are provided. The acoustic unit 40 is arranged in each of the longitudinal directions of the illumination unit 20 with the illumination unit 20 interposed therebetween.

In this way, the pair of acoustic units 40 are arranged in each of the longitudinal directions of the illumination unit 20 with the long illumination unit 20 interposed therebetween. Therefore, the one acoustic unit 40 and the other acoustic unit 40 are arranged at a distance from each other. As a result, it becomes easy to spread the sound to the outside of the lighting device 1.

(Other modifications, etc.)
Although the present invention has been described above based on the embodiments, the present invention is not limited to the above embodiments. In the following description, in the same parts as those in the above embodiment, the same reference numerals may be given and the description thereof may be omitted.

For example, in the form of upper Symbol embodiment has been illustrated and described a lighting device 1 having a pair of the light guide plate (first light guide plate 3 and the second light guide plate 4), the installation number of the light guide plate, one There may be three or more. Further, the light guide plate may be an annular body arranged so as to surround the device main body 2. Further, the lighting device 1 may not be provided with a light guide plate.

Further, in the above embodiment, the acoustic unit 40 is housed in the exterior cover 12, but the exterior cover 12 may be composed of a first exterior cover and a pair of second exterior covers. In this case, the first exterior cover is the lighting unit 20, the first wireless module 46, the second wireless module 47, the first light-shielding member 5, the second light-shielding member 6, the lighting control unit 13, the lighting power supply unit 15, and the acoustic control unit 16. And the acoustic power supply unit 17 and the like may be accommodated, and the second exterior cover may accommodate the acoustic unit 40 and the like. Then, a pair of second exterior covers may be arranged in each of the longitudinal directions of the first exterior cover with the first exterior cover interposed therebetween. The pair of second exterior covers may be fixed to the first exterior cover by fastening members such as screws.

Further, in the above embodiment, the pair of acoustic units 40 are arranged in a posture of tilting outward with respect to the lighting device 1, but the present invention is not limited to this. For example, the pair of acoustic units 40 may be arranged in an inwardly inclined posture. In this case, the intersection of the center line S of one speaker 41 and the center line S of the other speaker 41 is formed on the Z-axis plus direction side of the lighting device 1.

Further, in the above embodiment, the pair of cover bodies 42 are tilted with respect to the XY plane, but may be substantially parallel to the XY plane. That is, by tilting the pair of speakers 41, the central direction of the directivity of the sound may intersect the optical axis of the light emitted by the illumination unit 20, and the tilt of the pair of cover bodies 42 does not affect the tilt.

Further, in the above embodiment, the emission surface 35b of the first light guide plate 3, the emission surface 35b of the second light guide plate 4, and the Z-axis minus side surface of the first translucent cover 70 are on substantially the same plane. It may be arranged. In this case, the bottom surface of the pair of cover bodies 42 may be a surface that is smoothly inclined with respect to the surface on the negative side of the Z axis of the first translucent cover 70.

Further, in the above embodiment, the case where the pair of speakers 41 are provided at both ends in the longitudinal direction in the apparatus main body 2 is exemplified, but the pair of speakers 41 may be installed at any place. For example, the pair of speakers 41 may be arranged in the housing. Further, the speaker 41 may be provided with one or three or more speakers 41 for one lighting device 1. Further, the one speaker 41 may be an annular speaker 41 that surrounds the device main body 2. In this case, if the center of gravity of one annular speaker 41 is arranged in the first opening 20a of the device main body 2, the weight balance of the lighting device 1 can be maintained. Further, even when there are a plurality of speakers 41, if the complex center of gravity of the plurality of speakers 41 is arranged in the first opening 20a of the device main body 2, the weight balance of the lighting device 1 can be maintained. ..

Further, in the above embodiment, the case where the first radio module 46 and the second radio module 47 are arranged in the wall portion of the first accommodating portion 251 is exemplified. However, the first wireless module 46 and the second wireless module 47 may be arranged at any place of the lighting device 1 as long as they are arranged so as to sandwich the lighting unit 20. For example, each of the first radio module 46 and the second radio module 47 may be arranged inside each of the pair of cover bodies 42 of the acoustic unit 40.

Further, in the above embodiment, the lighting device 1 provided with the first light guide plate 3 and the second light guide plate 4 is exemplified, but the lighting device may be a lighting device without a light guide plate.

Further, in the above-described embodiment, the lighting device 1 having a cross-shaped plan view is illustrated, but the shape of the lighting device 1 in a plan view may be any shape. Examples of the plan view shape of the lighting device 1 include a circular shape, a rectangular shape, a polygonal shape other than the rectangular shape, and an elliptical shape.

In addition, there are also forms obtained by subjecting various modifications to the embodiments that can be conceived by those skilled in the art, and embodiments realized by arbitrarily combining the components and functions of the embodiments without departing from the spirit of the present invention. Included in the present invention.

1 Lighting device 3 First light guide plate (light guide plate)
4 Second light guide plate (light guide plate)
12 Exterior cover (housing)
20 Illumination unit 22 Light emitting surface 40 Acoustic unit 122 Second light source (light source)

Claims (6)

The lighting unit that emits light and
The acoustic part that emits sound and
A housing that houses the lighting unit and the acoustic unit ,
A light guide plate extending toward the outside of the lighting unit,
A light source for incident light on the light guide plate is provided.
The acoustic portion is disposed on the outer periphery of the front Symbol illumination unit,
The central direction of acoustic directivity is a lighting device that intersects the optical axis of the light emitted by the lighting unit. The lighting device according to claim 1, wherein the angle between the center direction and the optical axis is larger than 0 ° and 45 ° or less. The lighting device according to claim 1, wherein the angle between the center direction and the optical axis is 5 ° or more and 25 ° or less. The lighting device according to any one of claims 1 to 3, wherein the acoustic unit is arranged in a posture of tilting outward with respect to the lighting device. A pair of the light guide plates are provided, and the light guide plates are provided in pairs.
The lighting device according to claim 4 , wherein the light guide plate is arranged so as to sandwich the lighting unit when the lighting device is viewed in a plan view. The lighting unit has a long shape and has a long shape.
A pair of the acoustic units is provided, and the acoustic unit is provided.
The lighting device according to any one of claims 1 to 5 , wherein the acoustic unit is arranged in each of the longitudinal directions of the lighting unit with the lighting unit interposed therebetween.

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