JP7108926B2 - lighting equipment - Google Patents

Description

The present invention relates to a lighting device attached to the ceiling of a building.

Conventionally, a lighting device has been disclosed that includes display means (liquid crystal display device) for displaying images, light emitting means (backlight) for irradiating emitted light to an illumination area, and image generation means for generating images ( For example, see Patent Document 1). In this illuminating device, the display means and the light emitting means create an illuminating environment into which light shines.

JP 2013-92616 A

For example, when attaching the lighting device disclosed in Patent Document 1 to the ceiling of a building, it is necessary to work while facing upward while climbing a stepladder or the like. Therefore, a lot of labor is required to attach the lighting device.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a lighting device that can be easily attached to a ceiling.

To achieve the above object, a lighting device according to one aspect of the present invention includes a housing that has an opening and is fixed to the ceiling of a building, a substrate, and a plurality of LEDs (Light Emitting Diodes) provided on the substrate. ) an LED panel that has an element and irradiates light to the floor side of the building, the LED panel has one panel end and the other panel end supported by the housing, provided in the housing so as to block at least a portion of the opening, the housing having a one support portion that supports the one panel end portion and a second support portion that supports the other panel end portion; and the one support portion has an inclined portion that inclines outward and upward as viewed from the center of the opening, and further, the LED panel has a width that narrows toward the tip of the one panel end. The one supporting portion has side faces facing each other in the width direction of the LED panel, and the distance between the side faces facing each other is greater than the width of the tip of the tip side and the width of the tip of the side face smaller than the width of the base of the part.

ADVANTAGE OF THE INVENTION According to this invention, an illuminating device can be easily attached to a ceiling.

It is a figure which shows the illuminating device of a comparative example. It is a figure which shows the example of installation of the illuminating device which concerns on embodiment. BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows typically the external appearance of the illuminating device which concerns on embodiment. 1 is a perspective view schematically showing an LED panel, a light reflecting member, and a light transmitting panel of a lighting device according to an embodiment; FIG. 3 is an exploded perspective view schematically showing an LED panel, a light reflecting member, a light transmitting panel, a control section and a power supply section of the lighting device according to the embodiment; FIG. 1 is a cross-sectional view of a lighting device according to an embodiment; FIG. FIG. 7 is a view of the LED panel and housing according to the embodiment cut along line VII-VII shown in FIG. 6; It is the figure which looked at the LED panel which concerns on embodiment from the front and the lower side. It is a figure which shows the LED module contained in the LED panel which concerns on embodiment. It is a figure which shows the wiring of the LED panel which concerns on embodiment. 1 is an exploded perspective view of an LED panel and a housing according to an embodiment; FIG. FIG. 12 is an exploded perspective view of the LED panel and housing according to the embodiment viewed from a direction different from that of FIG. 11; It is a figure which shows a mode that the LED panel which concerns on embodiment is attached to a housing|casing. FIG. 4 is a schematic diagram showing a state in which one panel end of the LED panel according to the embodiment is hung from a projecting portion; FIG. 5 is a schematic diagram showing how one end of the LED panel according to the embodiment is moved along the inclined portion; FIG. 4 is a schematic diagram showing a state in which one panel end of the LED panel according to the embodiment is attached to a housing; FIG. 4 is a cross-sectional view showing a state in which one panel end portion of the LED panel according to the embodiment is in contact with a stopper portion; FIG. 4 is a schematic diagram showing a state in which the other panel end of the LED panel according to the embodiment is attached to a housing; FIG. 10 is a schematic diagram showing a state in which the LED panel of the lighting device according to Modification 1 of the embodiment is in contact with the stopper portion; FIG. 10 is a schematic diagram showing how the LED panel of the lighting device according to Modification 1 of the embodiment is moved along the inclined portion; FIG. 11 is a schematic diagram showing a state in which an LED panel of a lighting device according to Modification 1 of the embodiment is attached to a housing;

(Circumstances leading to the present invention)
First, the background to the present invention will be described with reference to a lighting device of a comparative example. FIG. 1 is a diagram showing a lighting device 101 of a comparative example. FIG. 1(a) shows a state in which a lighting device 101 of a comparative example is attached to a ceiling 70 of a building. FIG. 1B shows how an LED (Light Emitting Diode) panel 120 of the lighting device 101 is attached to the housing 110 .

As shown in (a) of FIG. 1 , the lighting device 101 of the comparative example includes a housing 110 fixed to the ceiling 70 and an LED panel 120 having a plurality of LED elements 23 . The housing 110 has an opening 111 , and the LED panel 120 is attached to the housing 110 so as to block the opening 111 .

When attaching the lighting device 101 to the ceiling, for example, it is necessary to climb a stepladder or the like and perform the work while facing upward. Therefore, a lot of labor is required to attach the lighting device 101 to the ceiling. Also, when attaching the LED panel 120 to the housing 110, it is necessary to insert the lighting device 101 obliquely into the opening 111 of the housing 110 as shown in FIG. The work to be done is difficult, and the LED element 23 may come into contact with the housing 110 and be damaged.

Therefore, an object of the present embodiment is to provide a lighting device that can be easily attached to a ceiling.

(Embodiment)
A lighting device according to the present embodiment will be described below with reference to the drawings. All of the embodiments described below represent specific examples of the present invention. Therefore, the numerical values, shapes, materials, constituent elements, arrangement positions and connection forms of the constituent elements, etc. shown in the following embodiments are examples and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in independent claims representing the highest level concept of the present invention will be described as optional constituent elements.

Each figure is a schematic diagram and is not necessarily strictly illustrated. Moreover, in each figure, the same code|symbol is attached|subjected to substantially the same structure, and the overlapping description may be abbreviate|omitted or simplified.

Further, coordinate axes may be shown in the drawings used for explanation in the following embodiments. The minus side of the Z-axis indicates the lower side in the vertical direction, and the plus side of the Z-axis indicates the upper side in the vertical direction. Also, the X-axis direction and the Y-axis direction are directions orthogonal to each other on a plane perpendicular to the Z-axis direction.

[1. Schematic configuration of lighting device]
First, a schematic configuration of a lighting device 1 according to the present embodiment will be described with reference to FIGS. 2 to 5. FIG. A lighting device 1 according to the present embodiment is a device for allowing a user to experience a simulated experience of looking at the sky from inside a room through a window. The lighting device 1 is installed indoors, for example, and simulates light simulating a natural sky such as a blue sky or a sunset from an indoor window.

FIG. 2 is a diagram showing an installation example of the lighting device 1. As shown in FIG. FIG. 3 is a perspective view schematically showing the appearance of the lighting device 1. As shown in FIG. FIG. 4 is a perspective view schematically showing the LED panel 20, the light reflecting member 30 and the light transmitting panel 40 of the illumination device 1. FIG. FIG. 5 is an exploded perspective view schematically showing the LED panel 20, the light reflecting member 30, the light transmitting panel 40, the control section 50, and the power supply section 60 of the lighting device 1. As shown in FIG.

As shown in FIGS. 2 to 5, the illumination device 1 includes a housing 10, an LED panel 20, a light reflection member 30, and a light transmission panel . The illumination device 1 also includes a frame 42 as shown in FIGS. 2 and 3, and a control section 50 and a power supply section 60 as shown in FIG.

The housing 10 is a box and accommodates the LED panel 20 , the light reflecting member 30 , the light transmitting panel 40 , the control section 50 and the power supply section 60 . Note that the control unit 50 and the power supply unit 60 may be arranged outside the housing 10 . The housing 10 is made of, for example, a metal material or a resin material, and fixed to the ceiling 70 of the building.

The housing 10 has an opening 11 on its lower side. When the housing 10 is viewed from below, the shape of the opening 11 is rectangular. The shape of the opening 11 is not limited to a rectangular shape, and may be a circular shape, a polygonal shape, a semicircular shape, or the like. The structure of housing 10 will be described later in detail.

The LED panel 20 is a light source that emits light for forming an image downward, that is, toward the floor of the building. As shown in FIG. 5 , the LED panel of this embodiment is composed of five LED panels 20 . Each LED panel 20 has a substrate 21 and a plurality of LED modules 22 provided on the substrate 21 . Note that the LED panel is not limited to the five LED panels 20, and may be composed of one LED panel in which the five LED panels 20 are integrated.

Each LED module 22 has a plurality of LED elements 23 . Each LED element 23 is an RGB type light emitting element that emits blue light, green light and red light, that is, three primary colors of light. Each LED element 23 emits light based on power supplied from the power supply unit 60 and control signals input from the control unit 50 . The LED panel 20 irradiates light including images such as blue sky, white clouds, cloudy sky, evening sky, and sunset by controlling light emission of each LED element 23 . The structure of the LED panel 20 will be described later in detail.

The light reflecting member 30 has a tubular shape and is arranged between the LED panel 20 and the light transmitting panel 40 . The light reflecting member 30 is an optical member that reflects light emitted from the LED panel 20 . Specifically, the light reflecting member 30 reflects the light emitted from the LED panel 20 and incident on the inner surface of the light reflecting member 30 toward the light transmission panel 40 side. The light reflecting member 30 is produced, for example, by subjecting a surface formed of a metal material such as aluminum to mirror finishing or diffusion treatment.

The light transmission panel 40 is an optical member that transmits and diffuses the light emitted from the LED panel 20 and emits the light toward the floor. For example, the light-transmitting panel 40 is produced by applying diffusion processing to a transparent plate made of a resin material or a glass material.

As shown in FIGS. 2 and 3 , the frame 42 has a frame-like shape and is provided so as to cover the outer peripheral portion of the light transmission panel 40 . The frame 42 has a bottom surface 42a that is the lowest surface and an inner side surface 42b that is connected to the bottom surface 42a and extends upward. The light-transmitting panel 40 is arranged above the bottom surface 42 a and the inner side surface 42 b of the frame 42 .

[2. Detailed configuration of lighting device]
Next, the detailed configuration of the illumination device 1 will be described with reference to FIGS. 6 to 15. FIG.

FIG. 6 is a cross-sectional view of the illumination device 1. FIG. FIG. 7 is a view of the LED panel 20 and housing 10 cut along line VII-VII shown in FIG.

As shown in FIG. 6 , lighting device 1 includes housing 10 , LED panel 20 , light reflecting member 30 , light transmitting panel 40 , frame 42 , control section 50 , and power supply section 60 .

As shown in FIG. 7 , the illumination device 1 has five LED panels 20 and the opening 11 is covered with the five LED panels 20 . That is, the LED panel 20 is provided in the housing 10 so as to block at least part of the opening 11 .

Here, the basic structure of the LED panel 20 will be described first.

8A and 8B are front and bottom views of the LED panel 20. FIG. FIG. 9 is a diagram showing an LED module 22 included in the LED panel 20. As shown in FIG.

As shown in FIG. 8 , the LED panel 20 has a substrate 21 and a plurality of LED modules 22 provided on the substrate 21 . The substrate 21 is made of, for example, a metal plate or a resin plate. The substrate 21 has a first major surface 21a and a second major surface 21b opposite to the first major surface 21a. In this embodiment, five LED modules 22 are provided on the first main surface 21a of the substrate 21 .

As shown in FIGS. 8 and 9, the LED module 22 has a module substrate 22a and a plurality of LED elements 23. As shown in FIGS.

As the module substrate 22a, for example, a metal base substrate based on metal, a resin substrate based on resin, a ceramic substrate made of ceramic, or the like is used.

As shown in FIG. 9, each LED element 23 is arranged on the module substrate 22a. That is, each LED element 23 is provided on the first main surface 21a side of the substrate 21 via the module substrate 22a. A light extraction mask 22b is provided on the module substrate 22a so as to fill the spaces between the LED elements 23. As shown in FIG.

The module substrate 22a is provided with two connectors 26 for signal input/output and a connector 27 for power supply, which are connected to the respective LED elements 23 by wiring, on the surface opposite to the surface on which the LED elements 23 are provided. It is Each connector 26, 27 passes through the substrate 21 and is exposed on the second main surface 21b side. As a result, each of the connectors 26 and 27 can be connected to the mating connector on the side of the second main surface 21b of the substrate 21 .

FIG. 10 is a diagram showing the wiring of the LED panel 20. As shown in FIG. As shown in FIG. 10, each LED module 22 of each LED panel 20 is provided with connectors 26 and 27 . For example, a signal output from the control unit 50 is input to the LED module 22 via one connector 26 and output from the other connector 26 . A signal output from the other connector 26 is input to one connector 26 of the adjacent LED module 22 . Power output from the power supply unit 60 is supplied to each LED module 22 through the connector 27 .

Next, a structure for attaching the LED panel 20 to the housing 10 will be described with reference to FIGS. 6 and 7 and FIGS. 11 and 12. FIG.

11 is an exploded perspective view of the LED panel 20 and the housing 10. FIG. FIG. 12 is an exploded perspective view of the LED panel 20 and housing 10 viewed from a direction different from that of FIG. In addition, in FIG. 11 and FIG. 12, the thickness of the member is omitted.

The LED panel 20 has one panel end 20a and the other panel end 20b supported by the housing 10, as shown in FIGS. The other panel end portion 20b is located on the opposite side of the one panel end portion 20a in the Y direction when the LED panel 20 is viewed from above. Each of the one panel end portion 20a and the other panel end portion 20b is configured by a portion of the substrate 21. As shown in FIG.

As shown in FIGS. 6, 7 and 11, the LED panel 20 has a concavity 24 that narrows toward the tip 24a of one panel end 20a. The tapered portion 24 has a trapezoidal shape, and the width gradually narrows from the base 24b of the tapered portion 24 toward the tip 24a. A hooking hole 25 is provided in one panel end portion 20a.

As shown in FIG. 12, a fastening hole 28 for fixing the LED panel 20 to the housing 10 is provided in the other panel end portion 20b. The LED panel 20 is fixed to the housing 10 using fastening members 71 such as screws. Note that the LED panel 20 may be fixed to the housing 10 using a bar member.

The housing 10 has one supporting portion 10 a and the other supporting portion 10 b that support the LED panel 20 . In the present embodiment, one support portion 10a supports one panel end portion 20a in one-to-one correspondence, and the other support portion 10b supports the other panel end portion 20b in one-to-many correspondence.

On the other hand, the support portion 10a is formed so as to extend horizontally from the main body of the housing 10 toward the center of the opening portion 11. As shown in FIG. On the other hand, the support portion 10a has a lower plate 15 and a pair of side plates 14 rising upward from the lower plate 15. As shown in FIG. On the other hand, the support portion 10a is provided on the main body of the housing 10 by, for example, welding, adhesion or screwing.

Further, the one support portion 10a has a protruding portion 12 protruding upward. The protruding portion 12 is provided on the lower plate 15 of the one support portion 10a, and is provided on the lower plate 15 at a position closest to the center of the opening 11. As shown in FIG. The hooking hole 25 of the LED panel 20 described above is hooked on the projecting portion 12 .

The other support portion 10 b is formed to horizontally extend from the main body of the housing 10 toward the center of the opening 11 . The other supporting portion 10b is provided with a screw hole 18 for fastening. Further, the other support portion 10b is provided with a contact portion 19 that regulates the position of the LED panel 20 in the length direction (Y direction).

Here, the structures of the LED panel 20 and the housing 10 will be described in detail while showing how the LED panel 20 is attached to the housing 10 with reference to FIGS. 13 to 16. FIG.

13A and 13B are diagrams showing how the LED panel 20 is attached to the housing 10. FIG. FIG. 14A is a schematic diagram showing a state in which one panel end portion 20a is hung from the projecting portion 12. FIG. 14B is a schematic diagram showing how one panel end portion 20a is moved along the inclined portion 13. FIG. 14C is a schematic diagram showing a state in which one panel end portion 20a is attached to the housing 10. FIG.

FIG. 15 is a sectional view showing a state in which one panel end portion 20a is in contact with the stopper portion 16. FIG. FIG. 16 is a schematic diagram showing a state in which the other panel end portion 20b is attached to the housing 10. As shown in FIG. 13 to 14C and 16, the thicknesses of some members are omitted.

Before being fixed to the housing 10, the LED panel 20 is hooked onto the protrusion 12 using the hooking holes 25, as shown in FIGS. 13 and 14A. As a result, the LED panel 20 is hung vertically, with the first main surface 21a of the substrate 21 of the LED panel 20 facing outward and the second main surface 21b facing inward. A mating connector is connected to each of the connectors 26 and 27 in this suspended state. By hooking the LED panel 20 on the projecting portion 12 in this manner, the worker who installs the lighting device 1 can easily perform wiring work and the like of the LED panel 20 .

After the wiring work or the like is completed, the LED panel 20 is raised by the operator and inserted into the opening 11 of the housing 10 as indicated by the arrow a1 in FIG. 14A.

As shown in FIGS. 14A and 14B , one support portion 10 a of housing 10 has an inclined portion 13 that is inclined outward and upward when viewed from the center of opening 11 . The inclined portion 13 is linear, but is not limited thereto and may be curved. "Outward" means the direction away from the opening 11, and "upward" means the direction away from the lower plate 15 of the one support portion 10a. The inclined portion 13 is a portion including the upper end surface of the side plate 14 of the one support portion 10a, and has an inclined angle α1 of, for example, 10° or more and 45° or less. The operator can raise the LED panel 20 along the inclined portion 13 by, for example, pushing the LED panel 20 obliquely in the upper right direction (see arrow a2 in FIG. 14B). This allows the operator to easily insert the LED panel 20 into the opening 11 .

Also, the pair of side plates 14 has side surfaces 14a facing each other in the width direction (X direction) of the LED panel 20 . The distance i1 between the facing sides 14a is larger than the width w1 of the tip 24a of the concavity 24 of the LED panel 20 and smaller than the width w2 of the attachment 24b of the concavity 24 (see FIG. 7). With this structure, for example, when the LED panel 20 is moved along the inclined portion 13, it can be moved while being guided by the side surfaces 14a facing each other. This allows the operator to attach the LED panel 20 to the housing 10 while restricting the position of the LED panel 20 in the width direction.

Further, the housing 10 has a stopper portion 16 provided on the upper side of the inclined portion 13 . The stopper portion 16 is a portion against which the leading end 24a of the LED panel 20 hits when the LED panel 20 moves more than necessary due to pushing by the operator. The stopper portion 16 is provided on the main body of the housing 10 and has an inclination angle larger than the inclination angle α1 of the inclination portion 13 . The inclination angle of the stopper portion 16 may be, for example, greater than the inclination angle α1 and 180° or less. In this embodiment, the stopper portion 16 has an inclination angle of 90° and is formed along the vertical direction. With this structure, the LED panel 20 can be prevented from moving more than necessary, so that the operator can easily insert the LED panel 20 into the opening 11 .

Further, as shown in FIG. 15, the distance d1 from the tip 24a of one panel end 20a to the LED element 23 positioned closest to the tip 24a among the plurality of LED elements 23 is the distance from the stopper 16 to the opening. 11 is longer than the distance d2 to the edge 11a. The edge 11a of the opening portion 11 is the edge 11a of the opening portion 11 on the one support portion 10a side of the one support portion 10a and the other support portion 10b. According to this structure, when the movement of the LED panel 20 is stopped by the stopper portion 16, the contact of the LED element 23 with the edge 11a of the opening portion 11 can be suppressed. As a result, damage to the LED element 23 can be suppressed.

Thus, in this embodiment, the LED panel 20 is inserted into the opening 11 in a slanted state. At this time, one panel end portion 20a of the LED panel 20 is lifted along the inclined portion 13 and brought into contact with the stopper portion 16 as indicated by the arrow a2 in FIG. 14B. Next, the other panel end 20b is lifted as indicated by the arrow b2 in FIG. 14B, and the LED panel 20 is placed in a horizontal state. While maintaining this horizontal state, the LED panel 20 is lowered in the direction indicated by the arrow c2 in FIG. 14B. As a result, one panel end portion 20a is overlapped with the one support portion 10a as shown in FIG. 14C. Further, as shown in FIG. 16, the other panel end portion 20b is overlapped with the other support portion 10b and fixed to the housing 10 using the fastening member 71. As shown in FIG.

[3. effects, etc.]
A lighting device 1 according to the present embodiment has an opening 11, a housing 10 fixed to a ceiling 70 of a building, a substrate 21 and a plurality of LED elements 23 provided on the substrate 21, and a and an LED panel 20 for irradiating light on the floor side. The LED panel 20 has one panel end portion 20 a and the other panel end portion 20 b supported by the housing 10 , and is provided in the housing 10 so as to block at least part of the opening 11 . The housing 10 has one support portion 10a that supports one panel end portion 20a and the other support portion 10b that supports the other panel end portion 20b. It has a sloped portion 13 that slopes outward and upward.

By providing the inclined portion 13 in the housing 10 in this manner, the operator can insert the LED panel 20 into the opening portion 11 along the inclined portion 13 . Accordingly, the LED panel 20 can be easily attached to the housing 10, so that the lighting device 1 can be easily attached to the ceiling.

In addition, the LED panel 20 has a concavity portion 24 whose width narrows toward the tip of one panel end portion 20a, while the support portion 10a has side surfaces 14a facing each other in the width direction of the LED panel 20. , the interval i1 between the mutually facing side surfaces 14a may be larger than the width w1 of the tip 24a of the tapered portion 24 and smaller than the width w2 of the root 24b of the tapered portion 24.

According to this, when the LED panel 20 is moved along the inclined portion 13, it can be moved while guiding the concavity portion 24 by the side surfaces 14a facing each other. As a result, the position of the LED panel 20 in the width direction is regulated, so that the LED panel 20 can be easily attached to the housing 10 .

Further, the width of the tip recess portion 24 may be gradually narrowed from the root 24b toward the tip 24a.

According to this, when the LED panel 20 is moved along the inclined portion 13, the position of the LED panel 20 in the width direction can be accurately regulated. Thereby, the LED panel 20 can be easily attached to the housing 10 .

Moreover, the housing 10 may further include a stopper portion 16 provided on the upper side of the inclined portion 13 and inclined at an angle larger than the inclination angle α1 of the inclined portion 13 .

According to this, when the LED panel 20 is moved along the inclined portion 13, it is possible to prevent the LED panel 20 from moving more than necessary. Thereby, the LED panel 20 can be easily attached to the housing 10 .

Further, the distance d1 from the tip 24a of one panel edge 20a to the LED element located closest to the tip 24a among the plurality of LED elements 23 is the distance d2 from the stopper portion 16 to the edge 11a of the opening 11. may be longer than

According to this, for example, when the movement of the LED panel 20 is stopped by the stopper portion 16, the contact of the LED element 23 with the edge 11a of the opening portion 11 can be suppressed. As a result, damage to the LED element 23 can be suppressed.

Further, the one supporting portion 10 a may have a projecting portion 12 projecting upward, and the LED panel 20 may have a hooking hole 25 to be hooked on the projecting portion 12 .

According to this, the LED panel 20 can be hooked on the projecting portion 12, so that wiring work of the LED panel 20, for example, can be easily performed. Moreover, since the LED panel 20 can be inserted into the opening 11 after being hooked once, it is possible to prevent the mounting work of the LED panel 20 from becoming unstable.

Moreover, the plurality of LED elements 23 are provided on the first main surface 21a side of the substrate 21, and the LED panel 20 is further connected to the plurality of LED elements 23 by wiring, and is located on the opposite side of the first main surface 21a of the substrate 21. You may have the connectors 26 and 27 exposed to the 2nd main surface 21b side.

According to this, the connectors 26 and 27 can be connected to the mating connectors while the LED panel 20 is hooked on the projecting portion 12 . Thereby, the wiring work of the LED panel 20 can be easily performed.

Further, a light-transmitting panel 40 arranged on the light irradiation side of the LED panel 20 and a frame-shaped frame 42 covering the outer peripheral portion of the light-transmitting panel 40 are provided. It may be arranged above.

In this way, even when the light transmission panel 40 and the LED panel 20 are installed on the upper side, that is, on the far side of the bottom surface 42a of the frame 42, the lighting device 1 can be easily attached to the ceiling.

[4. Modification 1 of Embodiment]
Next, a lighting device 1A according to Modification 1 of the embodiment will be described with reference to FIGS. 17A to 17C. In Modified Example 1, an example in which the stopper portion 16 is provided not on the main body of the housing 10 but on the side plate 14 will be described.

FIG. 17A is a schematic diagram showing a state in which the LED panel 20 of the lighting device 1A according to Modification 1 of the embodiment is in contact with the stopper portion 16. FIG. 17B is a schematic diagram showing how the LED panel 20 is moved along the inclined portion 13. FIG. 17C is a schematic diagram showing a state in which the LED panel 20 is attached to the housing 10. FIG.

As shown in FIGS. 17A to 17C, the one supporting portion 10a of the housing 10 has an inclined portion 13 inclined outward and upward when viewed from the opening portion 11. As shown in FIGS. The operator can raise the LED panel 20 along the inclined portion 13 by, for example, pushing the LED panel 20 obliquely in the upper right direction. This allows the operator to easily insert the LED panel 20 into the opening 11 .

In addition, the pair of side plates 14 has side surfaces 14a that face each other in the width direction of the LED panel 20 . The distance between the side surfaces 14a facing each other is greater than the width of the tip 24a of the recessed portion 24 of the LED panel 20 and smaller than the width of the base 24b of the recessed portion 24. - 特許庁With this structure, for example, when the LED panel 20 is moved along the inclined portion 13, it can be moved while being guided by the side surfaces 14a facing each other. This allows the operator to attach the LED panel 20 to the housing 10 while restricting the position of the LED panel 20 in the width direction.

Further, the housing 10 has a stopper portion 16 provided on the upper side of the inclined portion 13 . The stopper portion 16 is a portion against which the taper of the concavity portion 24 of the LED panel 20 hits when the LED panel 20 moves more than necessary due to pushing by the operator. The stopper portion 16 is configured by a portion of the side plate 14 and is inclined at an angle larger than the inclination angle of the inclined portion 13 . With this structure, the LED panel 20 can be prevented from moving more than necessary, so that the operator can easily insert the LED panel 20 into the opening 11 .

Thus, in the modified example, the LED panel 20 is inserted into the opening 11 in a slanted state. At that time, one panel end portion 20a of the LED panel 20 is lifted along the inclined portion 13 and brought into contact with the stopper portion 16 as shown in FIG. 17A. Next, the other panel end 20b is lifted and the LED panel 20 is placed in a horizontal state. While maintaining this horizontal state, the LED panel 20 is lowered as shown in FIG. 17B. As a result, one panel end portion 20a overlaps the one support portion 10a as shown in FIG. 17C. Also, the other panel end portion 20 b is overlapped with the other support portion 10 b and fixed to the housing 10 .

In this modified example as well, the housing 10 is provided with the inclined portion 13 , so that the operator can insert the LED panel 20 along the inclined portion 13 into the opening 11 . Accordingly, the LED panel 20 can be easily attached to the housing 10, so that the illumination device 1A can be easily attached to the ceiling.

(Other embodiments)
Although the illumination device 1 and the like have been described above based on the embodiments, the present invention is not limited to the above embodiments. For example, it can be realized by applying various modifications to the above-described embodiments that a person skilled in the art can think of, or by arbitrarily combining the constituent elements and functions of the embodiments without departing from the scope of the present invention. Forms are also included in the present invention.

For example, the LED element 23 may be an SMD (Surface Mount Device) type light emitting element or a COB (Chip On Board) type light emitting element. The LED elements 23 are not limited to three colors of RGB, and may have four colors of RGBW, or two colors of BW (two colors of blue and white).

Reference Signs List 1, 1A Lighting device 10 Case 10a One support part 10b Other support part 11 Opening 11a Edge of opening 12 Protruding part 13 Inclined part 14a Side surface 16 Stopper part 20 LED panel 20a One panel end 20b The other panel end 21 Substrate 21a First main surface 21b Second main surface 23 LED element 24 Concave portion 24a Tip 24b Base 25 Hook hole 26, 27 Connector 40 Light transmission panel 42 Frame 42a Bottom surface 70 Ceiling i1 Spacing w1, w2 Width d1, d2 Distance α1 Tilt angle

Claims (7)

a housing having an opening and fixed to the ceiling of a building;
an LED panel having a substrate and a plurality of LED (Light Emitting Diode) elements provided on the substrate and irradiating the floor side of the building with light;
with
The LED panel has one panel end and the other panel end supported by the housing, and is provided in the housing so as to block at least part of the opening,
The housing has a one support portion that supports the one panel end portion and a second support portion that supports the other panel end portion. and has an upward slope death,
moreover,
the LED panel has a concavity that narrows toward the tip of the one panel end,
The one support portion has side surfaces facing each other in the width direction of the LED panel,
The distance between the side surfaces facing each other is larger than the width of the tip of the tapered portion and smaller than the width of the base of the tapered portion.
lighting device. 2. The lighting device according to claim 1 , wherein the width of the concavity gradually narrows from the base toward the tip. The lighting device according to claim 1 or 2 , wherein the housing further includes a stopper portion provided above the inclined portion and inclined at an angle larger than the inclination angle of the inclined portion. 3. The distance from the tip of the one panel edge to the LED element positioned closest to the tip among the plurality of LED elements is longer than the distance from the stopper to the edge of the opening. The lighting device according to . The one support portion has a protruding portion that protrudes upward,
The lighting device according to any one of claims 1 to 4 , wherein the LED panel has a hooking hole hooked on the protrusion. The plurality of LED elements are provided on the first main surface side of the substrate,
6. The LED panel further comprises a connector that is wire-connected to the plurality of LED elements and that is exposed on the side of the second main surface opposite to the first main surface of the substrate. The lighting device according to the paragraph. Furthermore, a light-transmitting panel arranged on the light irradiation side of the LED panel, and a frame-shaped frame covering the outer peripheral portion of the light-transmitting panel,
The lighting device according to any one of claims 1 to 6 , wherein the light transmission panel is arranged above the bottom surface of the frame.

Images