JP6945186B2 - Lighting device - Google Patents

Description

The present invention relates to a lighting device.

Conventionally, a lighting device using a light guide plate in which light from a light emitting element is incident on an end surface of a light guide plate and light is emitted from a main surface of the light guide plate has been disclosed (see, for example, Patent Document 1).

Further, a lighting device having an LED light source substrate provided with an LED element group is disclosed (see, for example, Patent Document 2).

Japanese Unexamined Patent Publication No. 2015-225803 Japanese Unexamined Patent Publication No. 2016-219119

When the lighting device of Patent Document 1 and the lighting device of Patent Document 2 are combined, light is emitted from the surface of the light guide plate to illuminate the surroundings, and the light source mounted on the substrate emits light to surround the surroundings. Can be illuminated. In this case, for example, when only the LED element group of Patent Document 2 is turned on, light may be incident on the light guide plate of Patent Document 1. For this reason, there is a problem that light is emitted from the light guide plate that is not lit. Therefore, the intended lighting such as the lighting by the light emitting element and the lighting by the light guide plate cannot be properly performed.

Therefore, an object of the present disclosure is to provide a lighting device capable of partially illuminating the light emitting region of the lighting device.

In order to achieve the above object, the lighting device according to one aspect of the present disclosure includes a long substrate, a plurality of first light sources arranged in the longitudinal direction of the substrate, and a short arrangement of the plurality of first light sources. A light emitting module having a plurality of second light sources arranged along the longitudinal direction at one and the other of both ends of the substrate in the manual direction, and the one of the plurality of first light sources having a long shape. A first light guide plate, which is arranged in a light direction and guides light emitted from a part of the second light sources arranged on the one side in the lateral direction, and the other of the plurality of first light sources which are elongated. A second light guide plate arranged in the light direction and guided by light emitted from a part of the other second light source arranged on the other side in the lateral direction, the first light guide plate and the plurality of first light sources. Between the first light-shielding member, which is arranged between the two light sources and prevents the light emitted from the plurality of first light sources from entering the first light guide plate, and between the second light guide plate and the plurality of first light sources. A second light-shielding member that is arranged and prevents light emitted from the plurality of first light sources from entering the second light guide plate is provided , and the emission directions of the light of the plurality of first light sources and the plurality of first sources are provided. The light emission direction of the two light sources is the same .

According to the present disclosure, it is possible to partially illuminate the light emitting region of the lighting device.

FIG. 1 is a perspective view showing a lighting device according to the first embodiment. FIG. 2 is an exploded perspective view showing the lighting device according to the first embodiment. FIG. 3 is a partial cross-sectional view showing the lighting device according to the first embodiment in lines III-III of FIG. FIG. 4 is a partially enlarged cross-sectional view showing a light emitting module, a connector, a light shielding member, and the like of the lighting device according to the first embodiment. FIG. 5 is a plan view showing the lighting device according to the first embodiment. FIG. 6 is a schematic view showing a lighting mode of the lighting device according to the first embodiment. FIG. 7 is a schematic view showing a lighting mode of the lighting device according to the first embodiment. FIG. 8 is a plan view showing the first light guide plate and the second light source according to the first embodiment. FIG. 9 is a plan view showing the lighting device according to the second embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Each of the embodiments described below shows a preferred specific example of the present invention. Therefore, the numerical values, shapes, materials, components, arrangement positions of the components, connection forms, etc. 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 exactly the same but also substantially the same when explaining by taking "substantially the same" 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 description will be omitted or simplified.

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

(Embodiment 1)
[composition]
FIG. 1 is a perspective view showing the lighting device 1 according to the first embodiment. FIG. 2 is an exploded perspective view showing the lighting device 1 according to the first embodiment. FIG. 3 is a partial cross-sectional view showing the lighting device 1 according to the first embodiment in lines III-III of FIG. FIG. 4 is a partially enlarged cross-sectional view showing a light emitting module 21, a wiring member 120a, a first shading member 5, and the like of the lighting device 1 according to the first embodiment.

The lateral direction of the lighting device 1 is defined as the X-axis direction, the longitudinal direction of the lighting device 1 is defined as the Y-axis direction, and the direction orthogonal to the X-axis direction and the Y-axis direction is defined as the Z-axis 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 positive direction, the nightlight side with respect to the first opening 20a of the main body module 20 is defined as the Y-axis positive direction, and the ceiling side to which the lighting device 1 is mounted is defined as the positive direction. It is defined as the Z-axis plus direction, and each direction of X, Y, and Z is displayed. Then, each direction shown in FIG. 1 is displayed corresponding to each direction shown in FIG. The same applies to the figures after FIG.

As shown in FIGS. 1 and 2, the lighting device 1 uses 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 ceiling 11 arranged on the ceiling.

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 pair of support members 8, and a light-transmitting cover 7. It has.

The device main body 2 is a box-shaped body that is long in the Y-axis direction. The device main body 2 includes an exterior cover 12, a main body module 20, a pair of lens covers 23, a control unit 13, a receiving unit 14, and a power supply unit 15.

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. The exterior cover 12 houses the main body module 20, the first light-shielding member 5, the second light-shielding member 6, the control unit 13, the receiving unit 14, the power supply unit 15, and the like. The exterior cover 12 is a cover on the outside of the lighting device 1.

The main body module 20 has a rectangular shape that is long in the Y-axis direction, and has a circular first opening 20a in the central portion. The main body module 20 is electrically connected to the hook sealing 11 via the first opening 20a. The main body module 20 has a pair of light emitting modules 21 and an accommodating body 25.

[Light emitting module]
As shown in FIG. 2, the pair of light emitting modules 21 are fixed to the housing 25 by fastening members 19 such as screws. Specifically, the pair of light emitting modules 21 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. In this embodiment, two light emitting modules 21 are used, but one light emitting module 21 may be used.

As shown in FIGS. 2 and 3, the light emitting module 21 has a substrate 120, a plurality of first light sources 121, and a plurality of second light sources 122.

The substrate 120 has a rectangular plate shape that is long in the Y-axis direction. The substrate 120 mounts a plurality of first light sources 121 and a plurality of second light sources 122. The substrate 120 is installed in the housing 25 of the main body module 20 so as to be substantially parallel to the planes defined in the X-axis direction and the Y-axis direction. Wiring members 120a that supply power to the plurality of first light sources 121 and the plurality of second light sources 122 are fixed to the substrate 120. The board 120 is electrically connected to the power supply unit 15 via a cable (not shown) connected to the wiring member 120a. The wiring member 120a includes a lead wire that supplies power to the first light source 121 and the second light source 122, and a connector that electrically connects the substrate 120 and the lead wire. The wiring member 120a means that the metal wiring covered with the insulating member is included. In this embodiment, the wiring members 120a are scattered on the substrate 120.

A second opening 120b is formed on the substrate 120 on the positive side of the Y-axis. The second opening 120b is formed on the end side of the light emitting module 21 in the positive direction of the Y axis. When the light emitting module 21 is viewed in a plan view, the receiving unit 14 is formed so as to overlap the second opening 120b. This makes it easier for the receiving unit 14 to receive the signal transmitted from the remote controller. The second opening 120b is an example of the opening.

The substrate 120 may be thermally connected to the heat radiating portion 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 also serve 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 in the X-axis plus direction and the X-axis minus direction at both ends of the substrate 120 in the X-axis direction of the arrangement of the plurality of first light sources 121. There is. In other words, with respect to 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 of the above is arranged on the substrate 120 so as to sandwich the first light source 121. The X-axis plus direction of both ends of the substrate 120 in the X-axis direction of the arrangement of the plurality of first light sources 121 is an example of one of both ends of the substrate 120 in the lateral direction of the arrangement of the plurality of first light sources 121. Further, the X-axis minus direction of both ends of the substrate 120 in the X-axis direction of the arrangement of the plurality of second light sources 122 is another example of both ends of the substrate 120 in the lateral direction of the arrangement of the plurality of second light sources 122. be.

Since the light emission directions of the first light source 121 and the second light source 122 are directed in the Z-axis minus direction, the first light source 121 and the second light source 122 emit light in the Z-axis minus direction. The light emission direction, that is, the optical axes of the first light source 121 and the second light source 122 are 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 X-axis minus direction side. The second light source 122 on the positive side of the X-axis irradiates the incident surface 31a 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 31a of the second light guide plate 4 with light. The second light source 122 on the plus direction side of the X-axis is arranged so that the optical axis is substantially orthogonal to the incident surface 31a of the first light guide plate 3 and faces the incident surface 31a. Further, the second light source 122 on the minus direction side of the X-axis is arranged so that the optical axis is substantially orthogonal to the incident surface 31a of the second light guide plate 4 and faces the incident surface 31a. That is, the second light source 122 is substantially perpendicular to the incident surfaces 31a 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, the first light guide plate 3, and the second light guide plate 4 so that the second light source 122, the first light guide 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. Specifically, the SMD type LED element is 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 sealed in the cavity. The first light source 121 and the second light source 122 are turned on and off by being controlled by the control unit 13 provided in the power supply unit 15. Further, the first light source 121 and the second light source 122 are controlled by the control unit 13 provided in the power supply unit 15 to perform dimming and color adjustment. 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 not limited to such a configuration, and the COB (Chip On Board) in which the LED chip is directly mounted on the substrate 120 of the first light source 121 and the second light source 122 is not limited to this. ) Type modules may be used. Further, the light emitting elements included in the first light source 121 and the second light source 122 are not limited to LEDs, and are, for example, semiconductor light emitting elements such as semiconductor lasers, EL elements such as organic EL (Electroluminescence) and inorganic EL, and the like. It may be a solid-state light emitting element.

Since the other light emitting module 21 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 translucent material such as a transparent resin such as acrylic or polycarbonate.

The lens cover 23 is a cover 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 the respective 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 the corresponding first light source 121 is transmitted.

Since the other lens cover 23 has the same configuration, the description thereof will be omitted.

[Container]
The housing 25 is a housing that houses a pair of light emitting modules 21 and a pair of lens covers 23. A pair of light emitting modules 21 are fixed to the housing 25 by a plurality of fastening members 19. Further, a pair of lens covers 23 are fixed to the housing 25 via a first light-shielding member 5, a second light-shielding member 6, and a pair of light-emitting modules 21.

[Control unit]
The control unit 13 is electrically connected to the first light source 121, the second light source 122, and the receiving unit 14. By controlling the lighting circuit unit, for example, the control unit 13 can perform dimming control and color adjustment control of the light emitted from the first light source 121 and the second light source 122. The control unit 13 controls the first light source 121 and the second light source 122 based on the signal transmitted from the remote controller. Control unit 13, lights the first light source 121 and the second light source 122, and is configured to allow consumption lit. For example, the control unit 13 has only a plurality of first light sources 121 on the Y-axis plus direction side, only a plurality of first light sources 121 on the Y-axis minus direction side, only all the first light sources 121, and an X-axis plus direction. Only the plurality of second light sources 122 arranged on the side, only the plurality of second light sources 122 arranged on the minus direction side of the X-axis, or these can be selected and lit by the selected combination. That is, the control unit 13 selectively lights the plurality of first light sources 121, some second light sources 122, and some other second light sources 122.

In addition, the control unit 13 can turn on a part of the plurality of first light sources 121 to the nightlight. The locations that are lit as nightlights are a plurality of first light sources 121 on the Y-axis plus direction side. A plurality of first light sources 121 that are lit as nightlights are arranged around the second opening 120b of the substrate 120. In addition to the plurality of first light sources 121, a third light source that lights up as a nightlight may be further provided.

The control unit 13 can be configured by using, for example, a microcomputer provided with a CPU (Central Processing Unit). The 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 an EEPROM (Electrically Erasable and Programmable Read Only Memory).

[Receiver]
As shown in FIG. 2, the receiving unit 14 is configured to receive, for example, a signal transmitted from a remote controller. The receiving unit 14 includes an infrared receiving element, a signal processing unit that amplifies the output of the infrared receiving element and performs predetermined signal processing, and the like. The signal from the remote controller includes lighting mode information such as a dimming command for controlling the dimming of the first light source 121 and the second light source 122, and a toning command for controlling the toning of the first light source 121 and the second light source 122. It has been. In the receiving unit 14, the signal processing unit outputs the lighting mode information demodulated from the signal received by the infrared light receiving element to the control unit 13.

[Power supply part]
As shown in FIGS. 2 and 3, the power supply unit 15 includes 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 power supply unit 15 supplies electric power to the light emitting module 21 via a cable.

[Light guide plate]
The first light guide plate 3 is arranged on the X-axis plus direction side of the plurality of first light sources 121. The X-axis plus direction side of the plurality of first light sources 121 is an example of one side of the plurality of first light sources 121. The 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 plane defined in the X axis direction and the Y axis direction. The first light guide plate 3 has an elongated plate shape 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 plurality of first light sources 121. Is. The first light guide plate 3 is a translucent member such as a resin such as acrylic or polycarbonate or glass, but may be formed 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 disc shape or another shape such as a polygonal shape.

As shown in FIG. 3, 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 edge 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 a plane defined in the X-axis direction and the Z-axis direction. The curved portion 31 guides the light emitted by the second light source 122 to the flat plate portion 35. The curved portion 31 is curved so as to guide the light incident from the incident surface 31a to the flat plate portion 35.

As shown in FIG. 4, the curved portion 31 has an incident surface 31a, an outer diameter surface 31b, an inner diameter surface 31c, and a pair of protruding portions 32.

The incident surface 31a is a surface on which light from a plurality of second light sources 122 is incident. The incident surface 31a is arranged substantially perpendicular to the optical axis of the plurality of second light sources 122 so that the light emitted from the plurality of second light sources 122 is incident. That is, the incident surface 31a is formed along the Y-axis direction in which the plurality of second light sources 122 are arranged. The incident surface 31a is a part of the side surface of the first light guide plate 3.

The outer diameter surface 31b is a surface on the side of the first light-shielding member 5 that faces each other, and is a surface that is curved so as to reflect light so as to mainly guide light to the flat plate portion 35. The outer diameter surface 31b is elongated in the Y-axis direction along the first light-shielding member 5 on the X-axis plus direction side.

The inner diameter surface 31c is a surface opposite to the outer diameter surface 31b, and is a surface curved so as to reflect light so as to mainly guide light to the flat plate portion 35. The inner diameter surface 31c is long in the Y-axis direction.

The protruding portion 32 is formed along the Y-axis direction on both end edges of the incident surface 31a extending in the Y-axis direction. The pair of projecting portions 32 are a plurality of second light sources 122 facing the incident surface 31a, and are located on both end sides of the plurality of second light sources 122 arranged in the Y-axis direction. Therefore, the incident surface 31a can collect more light emitted from the plurality of second light sources 122 by the protruding portion 32.

As shown in FIGS. 2 and 3, the engaging portion 39 projects so as to approach the first light source 121 side from the second light source 122 side of the curved portion 31. A notch is formed in the engaging portion 39. When the first light-shielding member 5, the first light guide plate 3, and the light-emitting module 21 are fastened together by the fastening member 19, the engaging portion 39 is connected to the first light-shielding member 5 by the fastening member 19 arranged in the notch. Temporarily tightened with the light emitting module 21.

The flat plate portion 35 is a plate that guides the light that has guided the curved portion 31 and emits light that illuminates the surroundings. The flat plate portion 35 is held substantially parallel to the plane defined in the X-axis direction and the Y-axis direction. The flat plate portion 35 is arranged on the X-axis plus direction side of the curved portion 31, that is, on the X-axis plus direction side of the apparatus main body 2. The flat plate portion 35 is a rectangular plate-shaped flat plate elongated in the Y-axis direction along the curved portion 31. The flat plate portion 35 is an example of the plate portion.

The flat plate portion 35 has a prism surface 35a, an exit surface 35b, and a through hole 35c.

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 plane defined in the X-axis direction and the Y-axis direction. The prism surface 35a is a surface formed so as to reflect the light to be guided toward the exit surface 35b. Specifically, a plurality of prisms recessed in the negative direction of the Z axis are formed on the prism surface 35a. The prism has a conical concave shape in the present embodiment, but may have a pyramidal shape, a truncated cone shape, a prismatic trapezoidal shape, a hemispherical concave 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. The prism surface 35a is an example of the back surface. The prism surface 35a can be formed by cutting, printing, or the like.

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

The through hole 35c penetrates from the exit surface 35b to the prism surface 35a. The plurality of through holes 35c are formed on the curved portion 31 side and are arranged at predetermined intervals along the Y-axis direction.

The support member 8 is long along the Y-axis direction, and is a member that supports the flat plate portion 35 on the main body module 20. The support member 8 is arranged on the exit surface 35b side of the flat plate portion 35. A plurality of screw holes are arranged in the support member 8 at predetermined intervals. The plurality of screw holes correspond one-to-one with the plurality of through holes 35c.

In the first light guide plate 3, the first light guide plate 3 is supported by the accommodating body 25 by fastening screws to the screw holes of the support member 8 through the plurality of through holes 35c.

The second light guide plate 4 is arranged on the X-axis minus direction side of the plurality of first light sources 121. The X-axis negative direction side of the plurality of first light sources 121 is an example of the other side of the plurality of first light sources 121. The edge 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 plane defined in the X axis direction and the Y axis direction. The second light guide plate 4 has an elongated plate shape 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 minus direction side of the plurality of first light sources 121. Is.

The flat plate portion 35 of the second light guide plate 4 is arranged on the X-axis minus direction side of the curved portion 31, that is, on the X-axis minus direction side of the apparatus main body 2.

The second light guide plate 4 has the same configuration as the first light guide plate 3 because the first light guide plate 3 is symmetrical with respect to the plane defined in the Z-axis direction and the Y-axis direction. The same reference numerals are used for some parts, and other explanations are omitted. The same applies to the support member 8.

[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, and the light emitted from the plurality of first light sources 121 is incident on the first light guide plate 3. Is hindering. 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 blocks light emitted from the outer diameter surface 31b of the curved portion 31 of the first light guide plate 3. The first light-shielding member 5 is an example of a light-shielding member.

The first light-shielding member 5 has a light reflection function for reflecting light. The first light-shielding member 5 is made of, for example, 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 first light-shielding member 5 has a first light-shielding cover 51 and a second light-shielding cover 52.

The first light-shielding cover 51 is elongated in the Y-axis direction along the edge of the lens cover 23 on the X-axis plus direction side. The first light-shielding cover 51 covers the wiring member 120a on the substrate 120 when viewed from the Z-axis minus direction of the first light-shielding member 5. The first light-shielding cover 51 has a thick portion for covering the wiring member 120a. The first light-shielding cover 51 is an example of a light-shielding cover.

A storage space 51b for accommodating the wiring member 120a is formed in the thick portion of the first light-shielding cover 51. The accommodation space 51b is long in the Y-axis direction so that wiring members 120a such as connectors and lead wires can be accommodated. By accommodating the wiring member 120a in the accommodation space 51b, the wiring member 120a is covered with the first light-shielding cover 51.

The surface of the first light-shielding cover 51 on the negative side of the Z-axis has a recessed peripheral portion of the fastening hole 51a through which the fastening member 19 is inserted, and the other portion is a substantially uniform surface.

As shown in FIG. 4, the first light-shielding cover 51 has a protruding engaging portion 51c that protrudes along the edge of the lens cover 23. When at least the first light-shielding member 5, the first light guide plate 3, and the light emitting module 21 are fastened together by the fastening member 19, the protruding engaging portion 51c sandwiches the lens cover 23 with the light emitting module 21 so as to sandwich the lens cover 23. Engage with the edge of 23 to lock the lens cover 23. Further, at least when the second light-shielding member 6, the second light guide plate 4, and the light emitting module 21 are fastened together by the fastening member 19, the protruding engaging portion 51c is sandwiched between the light emitting module 21 and the lens cover 23. Engage with the edge to lock the lens cover 23. That is, the protruding engaging portion 51c fixes the lens cover 23 to the light emitting module 21 by the pressing force of the fastening member 19.

As shown in FIGS. 2 and 3, a plurality of fastening holes 51a are formed in the first light-shielding cover 51. Each of the plurality of fastening holes 51a has a one-to-one correspondence with the notches of the plurality of engaging portions 39. As a result, the fastening member 19 is screwed into the screw hole of the housing 25 by inserting the fastening hole 51a of the first light-shielding cover 51, the notch of the engaging portion 39, and the fastening hole of the light emitting module 21 in this order. in Rukoto and these fastened.

The second light-shielding cover 52 covers the outer diameter surface 31b of the curved portion 31 when viewed from the Z-axis minus direction of the first light guide plate 3. The second light-shielding cover 52 is elongated in the Y-axis direction along the curved portion 31. Further, the second light-shielding cover 52 is curved along the outer diameter surface 31b of the curved portion 31. That is, the second light-shielding cover 52 blocks the light emitted from the outer diameter surface 31b so that the light does not enter the light-transmitting cover 7. The second light-shielding cover 52 reflects the light so that the light emitted from the outer diameter surface 31b is incident on the outer diameter surface 31b again. The second light-shielding cover 52 also reflects the light emitted from the first light source 121 so as to increase the light directed to the translucent cover 7.

The second light-shielding member 6 is arranged between the curved portion 31 of the second light guide plate 4 and the plurality of first light sources 121, and the light emitted from the plurality of first light sources 121 is incident on the second light source plate 4. Is hindering. The second light-shielding member 6 blocks light emitted from the outer diameter surface 31b of the curved portion 31 of the second light guide plate 4. The second light-shielding member 6 is an example of a light-shielding member.

The other second light-shielding member 6 is symmetrical with respect to the planes defined in the Z-axis direction and the Y-axis direction, and has the same configuration as the first light-shielding member 5, so that the portion has the same configuration. The same reference numerals are used with respect to the above, and other description thereof will be omitted.

[Transparent cover]
As shown in FIG. 2, the translucent cover 7 is arranged on the Z-axis minus direction side of the device main body 2 and is removable from the device 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 has a plurality of claws, and the plurality of claws are held by the device main body 2 by engaging with a receiver 9 fixed to the first light-shielding cover 51. The receiver 9 is a translucent resin material, and a plurality of receivers 9 are fixed to each of the first light-shielding member 5 and the second light-shielding member 6. In the present embodiment, the receiver 9 is configured by using a transparent resin material so that the unevenness thereof is not projected on the translucent cover 7.

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 also have light diffusivity. That is, the translucent cover 7 may be a diffusing cover having translucency and light diffusivity instead of the transparent cover. In this case, the light-transmitting cover 7 can be a milky white diffusion 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 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 lock the second translucent cover 80 to hold the second translucent cover 80.

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 formed on the cover frame portion 81.

The cover frame portion 81 is a rectangular plate-shaped frame body elongated in the Y-axis direction, and is engaged with a plurality of locking pieces of the first translucent cover 70.

As shown in FIGS. 2 and 4, the inclined portion 83 is formed on the inner edge side of the cover frame portion 81, and is elongated along the Y-axis direction of the cover frame portion 81. The inclined portion 83 is aligned with the first light-shielding cover 51 of each of the first light-shielding member 5 and the second light-shielding member 6 when the cross section cut in the plane defined in the X-axis direction and the Z-axis direction is viewed. , It is curved in an arc shape.

[Position]
Next, the positional relationship between the through hole 35c and the second light source 122 will be described with reference to FIG.

FIG. 8 is a plan view showing the first light guide plate 3 and the second light source 122 according to the first embodiment.

As shown in FIG. 8, the through hole 35c formed in the flat plate portion 35 blocks the light traveling in the first light guide plate 3 and the second light guide plate 4. That is, the light that has guided the curved portion 31 travels to the flat plate portion 35. At this time, a part of the light to be guided is blocked by the through hole 35c. Therefore, shadows are likely to be formed in the first light guide plate 3 and the second light guide plate 4. When such a shadow is generated, when the first light source 121 emits light, the light emitted from the exit surface 35b of the first light guide plate 3 and the second light guide plate 4 has a luminance spot, and the appearance is deteriorated.

From this point of view, as shown in FIG. 8, in the present embodiment, a plurality of second light sources 122 are densely arranged around the through hole 35c in order to suppress the generation of shadows. Specifically, in the facing region H1 facing at least one of the plurality of through holes 35c via the incident surface 31a, the plurality of second light sources 122 are arranged more densely than in the non-opposing region H2. That is, a part of the plurality of arranged second light sources 122 arranged in the Y-axis direction from the through hole 35c is densely arranged. By densely arranging a part of the plurality of second light sources 122 in this way, the through hole 35c is brightly illuminated by the light emitted by each of the second light sources 122, so that the shadow generated by the through hole 35c can be easily canceled. .. The non-opposing region H2 is a region between two adjacent facing regions H1 and does not face the through hole 35c.

The plurality of second light sources 122 arranged in the non-opposing region H2 are arranged so that the distance between them increases as the distance from the facing region H1 increases. Since the non-opposing region H2 is a region sandwiched between the two facing regions H1, the distance between the plurality of second light sources 122 is the widest in the middle and the narrowest between both ends. Therefore, in the non-opposing region H2, since the plurality of second light sources 122 are arranged so that the interval increases as the distance from the facing region H1 increases, the brightness gradually decreases as the distance from the facing region H1 increases. As a result, the brightness unevenness is suppressed from being conspicuous by suppressing the sharp change in the brightness at the boundary portion between the facing region H1 and the non-opposing region H2.

[motion]
In such a lighting device 1, the light emitted from the plurality of first light sources 121 is light-distributed controlled by the lenses of the lens cover 23, transmitted 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 31a of the first light guide plate 3 and the second light guide plate 4, and the curved portion 31 And guide the flat plate portion 35. In the curved portion 31, the light reflected by the inner diameter surface 31c and the outer diameter surface 31b, or the light reflected by the first light-shielding member 5 and the second light-shielding member 6 is incident even if the light is emitted from the outer diameter surface 31b. A part of the light that guides the flat plate portion 35 is reflected by the prism surface 35a, heads toward the exit surface 35b, and is emitted from the exit surface 35b. Further, some other light that guides the flat plate portion 35 is emitted from the prism surface 35a to illuminate the ceiling. In this way, the lighting device 1 can illuminate the surroundings by emitting light from each of the translucent cover 7, the first light guide plate 3, and the second light guide plate 4.

[Lighting mode]
Next, the lighting mode of the lighting device 1 will be described.

FIG. 5 is a plan view showing the lighting device 1 according to the first embodiment. FIG. 6 is a schematic view showing a lighting mode of the lighting device 1 according to the first embodiment.

As shown in FIG. 5, when the illuminating device 1 is viewed in a plan view, the illuminating device 1 has a first emission region R1 in which light is emitted from the first light guide plate 3 and a second light emitting region R1 in which light is emitted from the second light guide plate 4. It has two emission regions R2 and a third emission region R3 from which light is emitted from the third light guide plate 203. In this lighting device 1, the amounts of light emitted from the first emission region R1, the second emission region R2, and the third emission region R3 are substantially equal. That is, the lighting device 1 emits light substantially uniformly. More specifically, in each of the first emission region R1, the second emission region R2, and the third emission region R3, substantially uniform surface light emission with suppressed luminance spots is performed, and further, the first emission region R1 and the first emission region R1. The two emission regions R2 and the third emission region R3 emit light having substantially the same brightness. In order to equalize the amount of light emitted from the first emission region R1, the second emission region R2, and the third emission region R3, the control unit 13 in FIG. 3 controls the power supply unit 15, and the plurality of first light sources 121, The amount of light emitted by the plurality of second light sources 122 is substantially equal.

Further, the areas of the first emission region R1, the second emission region R2, and the third emission region R3 are substantially equal. The length in each Y-axis direction and the length in each X-axis direction are substantially the same.

Further, in the lighting device 1, each of the first emission region R1, the second emission region R2, and the third emission region R3 can be lit, but it is also possible to illuminate by arbitrarily combining these regions. Further, the third emission region R3 can be divided into a Y-axis plus direction side and a Y-axis minus direction side, and can be illuminated separately.

FIG. 6A is a schematic view showing a case where the lighting device 1 according to the first embodiment is fully lit. As shown in FIGS. 3 and 6A, in the lighting device 1, when the control unit 13 lights the plurality of first light sources 121 and the plurality of second light sources 122, the first light guide plates 3 and 2 are turned on. Light is emitted from the light guide plate 4 and the translucent cover 7. That is, in this lighting device 1, the first emission region R1 and the second emission region R2 corresponding to the respective emission surfaces 35b of the first light guide plate 3 and the second light guide plate 4 and the emission surface of the translucent cover 7 Light is emitted from the corresponding third emission region R3 to illuminate the X-axis plus direction side of the illuminating device 1.

Further, in the lighting device 1, the brightness of the irradiated object may be substantially uniform. Specifically, in FIG. 6A, a part of the light emitted from the first emission region R1 and the third emission region R3 overlaps, and the light emitted from the second emission region R2 and the third emission region R3 Some overlap. In these overlapping portions, the light emitted from the first light guide plate 3, the second light guide plate 4 and the translucent cover 7 irradiates directly under the first light guide plate 3, the second light guide plate 4 and the translucent cover 7. Since the brightness is lower than that of the emitted light, not only the overlapping parts are brightened.

FIG. 6B is a schematic view showing a case where a plurality of second light sources 122 arranged on the X-axis plus direction side in the lighting device 1 according to the first embodiment are turned on. As shown in FIGS. 3 and 6B, in this lighting device 1, when the control unit 13 lights a plurality of second light sources 122 arranged on the X-axis plus direction side, the first light guide plate 3 starts to turn on. Light is emitted. That is, in this illuminating device 1, light is emitted from the first emitting region R1 corresponding to the emitting surface 35b of the first light guide plate 3 to illuminate the X-axis plus direction side of the illuminating device 1.

FIG. 6C is a schematic view showing a case where a plurality of second light sources 122 arranged on the X-axis minus direction side in the lighting device 1 according to the first embodiment are turned on. As shown in FIGS. 3 and 6 (c), in this lighting device 1, when the control unit 13 lights a plurality of second light sources 122 arranged on the minus direction side of the X axis, the second light guide plate 4 starts to turn on. Light is emitted. That is, in this illuminating device 1, light is emitted from the second emitting region R2 corresponding to the emitting surface 35b of the second light guide plate 4 to illuminate the X- axis minus direction side of the illuminating device 1.

FIG. 6D is a schematic view showing a case where a plurality of first light sources 121 in the lighting device 1 according to the first embodiment are turned on. As shown in FIGS. 3 and 6 (d), in this lighting device 1, when the control unit 13 lights a plurality of first light sources 121 arranged on the minus direction side of the X axis, light is emitted from the translucent cover 7. Is emitted. That is, in this illuminating device 1, light is emitted from the third emission region R3 corresponding to the emission surface of the translucent cover 7 to illuminate the Z-axis minus direction side of the illuminating device 1.

FIG. 7 is a schematic view showing a lighting mode of the lighting device 1 according to the first embodiment.

FIG. 7A is a schematic view showing a case where a plurality of second light sources 122 arranged on the X-axis plus direction side and the X-axis minus direction side in the lighting device 1 according to the first embodiment are turned on. As shown in FIGS. 3 and 7A, in this lighting device 1, when the control unit 13 lights a plurality of second light sources 122 arranged on the X-axis positive direction side and the X-axis negative direction side, Light is emitted from the first light guide plate 3 and the second light guide plate 4. That is, in this lighting device 1, light is emitted from the first light emitting region R1 and the second light emitting region R2 corresponding to the respective exit surfaces 35b of the first light guide plate 3 and the second light guide plate 4, so that the lighting device 1 emits light. Illuminate the X-axis plus direction side and the X-axis minus direction side of 1.

FIG. 7B is a schematic view showing a case where a plurality of second light sources 122 and a plurality of first light sources 121 arranged on the X-axis plus direction side of the lighting device 1 according to the first embodiment are turned on. .. As shown in FIGS. 3 and 7B, in this lighting device 1, when the control unit 13 lights a plurality of second light sources 122 and a plurality of first light sources 121 arranged on the X-axis plus direction side. , Light is emitted from the first light source plate 3 and the translucent cover 7. That is, in this lighting device 1, light is emitted from the first emission region R1 corresponding to the emission surface 35b of the first light guide plate 3 and the third emission region R3 corresponding to the emission surface of the translucent cover 7. , Illuminates the X-axis plus direction side and the Z-axis minus direction side of the lighting device 1.

FIG. 7 (c) is a schematic view showing a case where a plurality of second light sources 122 and a plurality of first light sources 121 arranged on the X-axis minus direction side of the lighting device 1 according to the first embodiment are turned on. .. As shown in FIGS. 3 and 7 (c), in this lighting device 1, when the control unit 13 lights a plurality of second light sources 122 and a plurality of first light sources 121 arranged on the minus direction side of the X axis. , Light is emitted from the second light source plate 4 and the translucent cover 7. That is, in this lighting device 1, light is emitted from the second emission region R2 corresponding to the emission surface 35b of the second light guide plate 4 and the third emission region R3 corresponding to the emission surface of the translucent cover 7. , Illuminates the X-axis minus direction side and the Z-axis minus direction side of the lighting device 1.

As described above, in the lighting device 1, the first light emitting region R1 in which light is emitted from the first light guide plate 3, the second emitting region R2 in which light is emitted from the second light guide plate 4, and a plurality of first light sources 121 The illumination can be selectively performed by combining the third emission region R3 from which the light is emitted from the light source R3 and the third emission region R3, respectively, or in any combination.

Further, in the lighting device 1, if the control unit 13 lights a plurality of first light sources 121 on the Y-axis plus direction side as nightlights, light is emitted from the translucent cover 7 through the pair of lens covers 23. Can be done.

[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 has an arrangement of a long substrate 120, a plurality of first light sources 121 arranged in the Y-axis direction of the substrate 120, and a plurality of first light sources 121. A light emitting module 21 having a plurality of second light sources 122 arranged along the Y-axis direction at one end and the other end of the substrate 120 in the X-axis direction, and a long-shaped first light source 121. A first light source plate 3 arranged on one side and guided by light emitted from a part of the second light sources 122 arranged on the other side in the X-axis direction, and a long-shaped first light source 121. A second light source plate 4 arranged on the other side and guided by light emitted from some other second light source 122 arranged on the other side in the X-axis direction, a first light guide plate 3, and a plurality of first light sources 121. A first light-shielding member 5 arranged between the light sources and preventing the light emitted from the plurality of first light sources 121 from entering the first light source plate 3, and the second light source plate 4 and the plurality of first light sources 121. It is provided with a second light-shielding member 6 which is arranged between them and prevents the light emitted from the plurality of first light sources 121 from entering the second light guide plate 4.

According to this, the first light-shielding member 5 is arranged between the first light guide plate 3 and the plurality of first light sources 121, and the light emitted from the plurality of first light sources 121 is incident on the first light guide plate 3. Prevents. Further, the second light-shielding member 6 is arranged between the second light guide plate 4 and the plurality of first light sources 121 to prevent the light emitted from the plurality of first light sources 121 from being incident on the second light source plate 4. .. The first light guide plate 3 is arranged at one of both ends of the substrate 120 in the X-axis direction, and guides the light emitted by the plurality of second light sources 122 arranged at one of both ends of the substrate 120 in the X-axis direction. Let me. Further, the second light guide plate 4 is arranged on the other end of the substrate 120 in the X-axis direction, and guides the light emitted by the second light source 122 arranged on the other end of the substrate 120 in the X-axis direction. Let me.

Therefore, if the plurality of second light sources 122 arranged on one side are turned on, the surroundings can be illuminated by the light emitted from the first light guide plate 3. If the plurality of second light sources 122 arranged on the other side are turned on, the surroundings can be illuminated by the light emitted from the second light guide plate 4. Further, if only the plurality of first light sources 121 are turned on, the surroundings can be illuminated with the light emitted from the translucent cover 7. Further, in the lighting device 1, these can be combined and selectively turned on. That is, light that illuminates the surroundings can be emitted from each of the first light guide plate 3, the second light guide plate 4, and the translucent cover 7 in an individual or combination of options. As a result, in this lighting device 1, each of the first light guide plate 3, the second light guide plate 4, and the translucent cover 7 can be illuminated separately.

Therefore, the light emitting region of the lighting device 1 can be partially illuminated.

In particular, for example, even if only a plurality of second light sources 122 are turned on, light leakage from the first light guide plate 3 and the second light guide plate 4 to the second light source 122 is less likely to occur. Therefore, when the first light source 121 or the second light source 122 is turned on, unnatural light due to light leakage is suppressed from the first light guide plate 3 and the second light guide plate 4. In this way, in order for the first light-shielding member 5 and the second light-shielding member 6 to suppress light leakage to the first light guide plate 3 and the second light guide plate 4, the brightness spots from the first light guide plate 3 and the second light guide plate 4 Can emit suppressed light. With such a lighting device 1, it is difficult for the user to feel uncomfortable and the appearance is unlikely to deteriorate.

Further, the lighting device 1 according to the present embodiment further includes a control unit 13 that controls a plurality of first light sources 121 and a plurality of second light sources 122. Then, the control unit 13 selectively lights the plurality of first light sources 121, some second light sources 122, and some other second light sources 122.

According to this, since the control unit 13 selectively lights the plurality of first light sources 121, one second light source 122, and the other second light source 122, in this lighting device 1, the first light guide plate 3 and the first light source plate 3 are lit. 2 Each of the light source plate 4 and the translucent cover 7 can be illuminated separately.

Further, in the lighting device 1 according to the present embodiment, when the lighting device 1 is viewed in a plan view, the light is emitted from the first light emitting region R1 where the light is emitted from the first light guide plate 3 and the light is emitted from the second light guide plate 4. A second emission region R2 is provided, and a third emission region R3 from which light is emitted from the first light source 121 is provided. The amount of light emitted from the first emission region R1, the second emission region R2, and the third emission region R3 is substantially equal.

According to this, the amounts of light emitted from the first emission region R1, the second emission region R2, and the third emission region R3 are substantially equal. Therefore, the appearance of the lighting device 1 is improved.

Further, in the lighting device 1 according to the present embodiment, the areas of the first emission region R1, the second emission region R2, and the third emission region R3 are substantially equal.

When the areas are different, for example, in order to make the amount of light emitted from the first emission region R1, the second emission region R2, and the third emission region R3 substantially equal, the amount of light in any region may be increased or decreased. Must. In this case, when the lighting device 1 is viewed, any region emits light unevenly. However, according to this, the areas of the first emission region R1, the second emission region R2, and the third emission region R3 are substantially equal. Therefore, the appearance of the lighting device 1 is improved.

Further, in the lighting device 1 according to the present embodiment, the first light-shielding member 5 and the second light-shielding member 6 have a light reflection function for reflecting light.

According to this, since the light emitted by the first light source 121 is reflected by the first light-shielding member 5 and the second light-shielding member 6, such shadows are generated even in places where shadows are likely to be generated by the wiring member 120a. It can be suppressed. Further, even if light is emitted from the outer diameter surface 31b of the curved portion 31 of the first light guide plate 3 and the second light guide plate 4, it is reflected by the first light-shielding member 5 and the second light-shielding member 6 and incident on the curved portion 31. Can be made to.

Further, in the lighting device 1 according to the present embodiment, in the light emitting module 21, a second opening 120b through which signals for receiving control of at least a plurality of first light sources 121 pass is formed on the end side of the light emitting module 21. NS. A part of the first light source 121 is turned on as a nightlight and is arranged around the second opening 120b.

For example, when the second opening 120b is around the first opening 20a, the non-light emitting region where the first light source 121 and the second light source 122 cannot be arranged is biased toward the central portion, and the non-light emitting region is not emitted. The area may become large. Therefore, in order to suppress the luminance unevenness caused by the non-light emitting region and emit uniform light from the illuminating device 1, the density of the second light source 122 is increased around the first opening 20a and the second opening 120b. However, the light distribution control by the lens cover 23 must be excessive, which makes it difficult to control the light distribution by the lens cover 23.

Therefore, by forming the second opening 120b on the end side of the light emitting module 21, the density of the arrangement of the second light source 122 is not increased. In addition, the difficulty of light distribution control, such as the need to excessively control the light distribution by the lens cover 23, becomes difficult.

Further, there is also a function of adjusting the plurality of second light sources 122 to nightlights by operating the remote controller, and the receiving unit 14 for receiving the signal transmitted by the remote controller is arranged on the Z-axis direction side of the opening. If a plurality of second light sources 122 that are lit as nightlights are arranged in the vicinity of the receiving unit 14, it is difficult to give a sense of discomfort to the operability.

Further, in the lighting device 1 according to the present embodiment, each of the first light guide plate 3 and the second light guide plate 4 has an exit surface 35b from which light is emitted, a prism surface 35a on the opposite side of the emission surface 35b, and light. Has an incident surface 31a on which the light is incident. Further, at the end of the first light guide plate 3 and the second light guide plate 4 on the incident surface 31a side, a plurality of through holes 35c penetrating from the exit surface 35b to the prism surface 35a are arranged along the incident surface 31a. There is. In the facing region facing at least one of the plurality of through holes 35c via the incident surface 31a, the plurality of second light sources 122 are arranged more densely than in the non-opposing region.

As described above, in the facing region facing at least one of the plurality of through holes 35c via the incident surface 31a, the plurality of second light sources 122 are arranged more densely than in the non-opposing region, so that the through holes 35c are formed. It will be illuminated by a plurality of first light sources 121. As a result, the shadow formed when irradiated by one second light source 122 is canceled by the light from the other second light source 122. Therefore, it is possible to suppress the generation of shadows in the first light guide plate 3 and the second light guide plate 4 due to the through hole 35c for mounting. Therefore, it is possible to improve the uniformity of light on the exit surface 35b of each of the first light guide plate 3 and the second light guide plate 4.

(Embodiment 2)
The configuration of the lighting device 200 according to the present embodiment will be described.

FIG. 9 is a top view showing the first light guide plate 3 and the second light source 122 according to the second embodiment. In FIG. 9, a plurality of first light sources 121 are omitted.

The present embodiment is different from the first embodiment in that a pair of third light guide plates 203 are further provided. Further, the lighting device 200 of the present embodiment is the same as that of the first embodiment unless otherwise specified, and the same reference numerals are given to the same configurations, and detailed description of the configurations will be omitted.

In the first embodiment, on both sides of the X-axis direction of the first light source 121 of the light emitting modules 2 1, a plurality of second light sources 122 are arranged, in this embodiment, further, the first light source 121 A plurality of second light sources 122 are also arranged on both sides in the Y-axis direction.

As shown in FIGS. 4 and 9, the light emitting module 221 has a plurality of first light sources 121 and a plurality of second light sources 122 arranged so as to surround the plurality of first light sources 121.

The third light guide plate 203 on one side is arranged on the Y-axis positive direction side of the device main body 2, and the third light guide plate 203 on the other side is arranged on the Y-axis negative direction side of the device main body 2. The first light guide plate 3, the second light guide plate 4, and the pair of third light guide plates 203 are arranged so as to surround the periphery of the plurality of first light sources 121 when viewed in a plan view. The third light guide plate 203 on one side guides the light of the plurality of second light sources 122 arranged on one of both ends of the substrate 120 in the Y-axis plus direction of the plurality of first light sources 121, and emits the light. do. Further, the third light guide plate 203 on the other side guides the light of the plurality of second light sources 122 arranged on one of both ends of the substrate 120 in the negative direction of the Y axis of the plurality of first light sources 121, and the light thereof. Is emitted.

The third light guide plate 203 is fixed in the exterior cover 12 and is supported so as to be substantially parallel to the plane defined in the X-axis direction and the Y-axis direction. The third light guide plate 203 has a substantially rectangular plate shape, and is an optical member that guides light from the second light source 122 arranged on the Y-axis direction side. The third light guide plate 203 is a translucent member such as a resin such as acrylic or polycarbonate or glass, but may be formed of any other material as long as it is translucent. The shape of the third light guide plate 203 is not limited to a rectangular shape, but may be a disc shape or another shape such as a polygonal shape. The third light guide plate 203 is the same as the first light guide plate 3 and the second light guide plate 4 except for the difference in shape except for the difference in shape, and thus the description thereof will be omitted.

In such a lighting device 200, in addition to the illumination of the first emission region R1, the second emission region R2, and the third emission region R3 of the first embodiment, the pair of third light guide plates 203 are further illuminated. Can be done. Further, the light is turned on by selectively combining the first emission region R1, the second emission region R2 and the third emission region R3, the emission region of one third light guide plate 203 and the emission region of the other third light guide plate 203. You may.

[Action effect]
Next, the operation and effect of the lighting device 200 in the present embodiment will be described.

As described above, in the lighting device 200 according to the present embodiment, a pair of third light guide plates arranged on one and the other ends of the substrate 120 in the Y-axis direction of an array of a plurality of first light sources 121. It includes 203. The light-emitting module 2 21 further has a second light source 122 of the plurality are arranged in one and the other of the both end portions of the substrate 120 in the Y-axis direction of the plurality of sequences of the first light source 121. Then, the pair of third light guide plates 203 are guided by light emitted from a plurality of second light sources 122 arranged on one and the other ends of the substrate 120.

In this way, since the plurality of second light sources 122 are further arranged on one and the other of both ends of the substrate 120 in the Y-axis direction of the plurality of first light sources 121, the plurality of second light sources 122 may have a plurality of first light sources. It will be arranged so as to surround the circumference of 121. Therefore, since the third light guide plate 203 can be arranged so as to surround the periphery of the plurality of first light sources 121, the periphery of the illuminating device 200 can be illuminated more uniformly.

The other effects of the present embodiment also have the same effects as those of the first embodiment.

(Other modifications, etc.)
Although the present invention has been described above based on the first and second embodiments, the present invention is not limited to the first and second embodiments.

For example, the lighting device according to the first and second embodiments may further have a speaker. The speaker may receive an audio signal from an external device and output an audio based on the audio signal by short-range wireless communication such as Wi-Fi (registered trademark) or Bluetooth (registered trademark). In this case, the antenna for the speaker may be arranged in the main body module.

Further, the lighting device according to the first and second embodiments is not limited to a rectangular shape, and may be, for example, a substantially circular shape in a plan view, and the shape is not particularly limited. In this case, the plurality of first light sources may be arranged in a substantially circular shape or the like in a plan view of the light emitting modules. Further, the plurality of second light sources may be arranged so as to surround the plurality of first light sources.

Further, the lighting device according to the first and second embodiments is not limited to a pair of light guide plates, and may be one light guide plate or three or more light guide plates. Further, the light guide plate may be an annular body surrounding the main body of the device.

Further, in the lighting device according to the first and second embodiments, the control unit controls the dimming level and the toning level of the light emitted from the first emission region, the second emission region, and the third emission region substantially the same. You may be able to.

Further, in the lighting device according to the first and second embodiments, a plurality of light guide plates are arranged around the device main body, but the lighting device is a frame-shaped light guide plate that surrounds the periphery of the device main body in a plan view. You may. That is, the number of light guide plates may be one.

In addition, by arbitrarily combining the components and functions of the first and second embodiments, the embodiments obtained by applying various modifications to the first and second embodiments that can be conceived by those skilled in the art, and the components and functions of the first and second embodiments without departing from the spirit of the present invention. The realized form is also included in the present invention.

1,200 Lighting device 3 1st light guide plate 4 2nd light guide plate 5 1st light shielding member 6 2nd light shielding member 13 Control unit 21,221 Light emitting module 31a Incident surface 35a Prism surface (back surface)
35b Exit surface (surface)
120 Substrate 120b Second opening (opening)
121 1st light source 122 2nd light source 203 3rd light guide plate

Claims (8)

A long substrate, a plurality of first light sources arranged in the longitudinal direction of the substrate, and one and the other of both ends of the substrate in the lateral direction of the arrangement of the plurality of first light sources in the longitudinal direction. A light emitting module having a plurality of second light sources arranged along the line,
A first light guide plate which is long and is arranged on one of the plurality of first light sources and is guided by light emitted from a part of the second light sources arranged on the one side in the lateral direction.
A second light guide plate which is long and is arranged on the other side of the plurality of first light sources and is guided by light emitted from some other second light sources arranged on the other side in the lateral direction. When,
A first light-shielding member arranged between the first light guide plate and the plurality of first light sources and preventing light emitted from the plurality of first light sources from entering the first light guide plate.
It is provided with a second light-shielding member which is arranged between the second light guide plate and the plurality of first light sources and prevents light emitted from the plurality of first light sources from entering the second light guide plate.
An illuminating device in which the light emitting directions of the plurality of first light sources and the light emitting directions of the plurality of second light sources are the same. Further, a control unit for controlling the plurality of first light sources and the plurality of second light sources is provided.
The lighting device according to claim 1, wherein the control unit selectively lights the plurality of first light sources, the partial second light source, and the other partial second light source. When the lighting device is viewed in a plan view
A first emission region in which light is emitted from the first light guide plate, a second emission region in which light is emitted from the second light guide plate, and a third emission region in which light is emitted from the first light source are provided.
The lighting device according to claim 1 or 2, wherein the amounts of light emitted from the first emission region, the second emission region, and the third emission region are substantially equal. The lighting device according to claim 3, wherein the areas of the first emission region, the second emission region, and the third emission region are substantially equal. The lighting device according to any one of claims 1 to 4, wherein each of the first light-shielding member and the second light-shielding member has a light reflection function for reflecting light. In the light emitting module, an opening through which signals for receiving control of at least the plurality of first light sources pass is formed on the end side of the light emitting module.
The lighting device according to any one of claims 1 to 5, wherein a part of the first light sources is turned on as a nightlight and is arranged around the opening. Each of the first light guide plate and the second light guide plate has a surface on which light is emitted, a back surface on the opposite side of the surface, and an incident surface on which light is incident.
At the end of each of the first light guide plate and the second light guide plate on the incident surface side, a plurality of through holes penetrating from the front surface to the back surface are arranged along the incident surface.
Any one of claims 1 to 6 in which the plurality of second light sources are arranged more densely than the non-opposing region in the facing region facing at least one of the plurality of through holes via the incident surface. The lighting device described in. Further, a pair of third light guide plates arranged on one and the other ends of the substrate in the longitudinal direction of the array of the plurality of first light sources is provided.
The light emitting module further has a plurality of second light sources arranged on one and the other ends of the substrate in the longitudinal direction of the array of the plurality of first light sources.
The lighting device according to any one of claims 1 to 7, wherein the pair of third light guide plates is guided by light emitted from a plurality of second light sources arranged on one and the other ends of the substrate. ..

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