JP6819367B2 - Lighting device - Google Patents

Description

An embodiment of the present invention relates to a lighting device.

Lighting devices have been developed that combine a plurality of lights having different lighting characteristics such as an illumination light using a light emitting element as a light source and an image projected from a projector to produce a space.

Japanese Unexamined Patent Publication No. 2012-186118

In order to make the projected image stand out, it is necessary to darken the projected surface such as the floor surface. However, when the projection surface is darkened, a sufficient amount of light suitable for spatial illumination may not be obtained.

An object to be solved by the present invention is to provide a lighting device suitable for spatial production and spatial illumination.

The lighting device of the embodiment includes a housing, a first lighting unit, and a second lighting unit. The housing has a light extraction surface. The first lighting unit is arranged on the center side of the housing, has a plurality of light emitting units capable of adjusting the output light, and displays a predetermined image. The second illumination unit is arranged around the first illumination unit in the direction along the light extraction surface, and illuminates a predetermined irradiation surface.

According to the present invention, it is possible to provide a lighting device suitable for spatial production and spatial illumination.

It is a top view which shows the lighting apparatus which concerns on Embodiment 1. FIG. It is sectional drawing AA of FIG. 1 which shows the lighting apparatus which concerns on Embodiment 1. FIG. It is BB sectional view of FIG. 1 which shows the lighting apparatus which concerns on Embodiment 1. FIG. It is sectional drawing which shows the 2nd light source which the lighting apparatus which concerns on Embodiment 1 includes. It is sectional drawing which shows the lighting apparatus which concerns on the modification 1 of Embodiment 1. It is sectional drawing which shows the lighting apparatus which concerns on the modification 2 of Embodiment 1. It is a top view which shows the lighting apparatus which concerns on Embodiment 2.

The lighting devices 1 and 1A according to the embodiments described below include a housing 10, a first lighting unit 21, and a second lighting unit 41. The housing 10 has a light extraction surface 11. The first lighting unit 21 is arranged on the center side of the housing 10, has a plurality of light emitting units 4 capable of adjusting the output light, and displays a predetermined image. The second illumination unit 41 is arranged around the first illumination unit 21 in the direction along the light extraction surface 11 and illuminates a predetermined irradiation surface.

Further, the first illumination unit 21 and the second illumination unit 41 according to the embodiment described below emit light having different hues from each other.

In addition, the second lighting unit 41 according to the embodiment described below emits light having a higher brightness than the first lighting unit 21.

Further, the lighting devices 1 and 1A according to the embodiments described below project between the first lighting unit 21 and the second lighting unit 41 from the end portion 9a of the first lighting unit 21 on the light extraction surface side. An inner wall 15 is further provided. The second illumination unit is arranged so that the end portion 36a on the light extraction surface side is separated from the light extraction surface 11 from the end portion 16a on the light extraction surface side of the inner wall 15.

Further, the second lighting unit 41 according to the embodiment described below has an acute angle of 45 ° or less, which is shielded by the inner wall 15.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings. In addition, each embodiment shown below does not limit the technique disclosed by this invention. In addition, each embodiment and each modification shown below can be appropriately combined within a consistent range. Further, in the description of each embodiment, the same reference numerals are given to the same configuration, and the following description will be omitted as appropriate.

[Embodiment 1]
FIG. 1 is a plan view showing a lighting device according to the first embodiment. As shown in FIG. 1, the lighting device 1 according to the first embodiment includes a housing 10, an inner wall 15, a first lighting unit 21, and a second lighting unit 41. The lighting device 1 is embedded in the ceiling of a house or facility, and the light emitted from the first lighting unit 21 and the second lighting unit 41 through the light extraction surface of the housing 10 is directed downward on the floor surface, wall surface, or the like. It is a ceiling-embedded type lighting device that illuminates.

For the sake of clarity, FIG. 1 illustrates a three-dimensional Cartesian coordinate system including a Z-axis having a vertically upward direction as a positive direction and a vertically downward direction as a negative direction. Such a Cartesian coordinate system may also be shown in other drawings used in the later description.

The housing 10 is made of, for example, a steel plate or aluminum, and is configured to accommodate the first lighting unit 21 and the second lighting unit 41. Further, the inner wall 15 is made of, for example, a steel plate or aluminum, and is arranged between the first lighting unit 21 and the second lighting unit 41 to partition the first lighting unit 21 and the second lighting unit 41. The housing 10 and the inner wall 15 may be made of the same material or may be different from each other.

The first lighting unit 21 is arranged on the center side of the housing 10 so as to be surrounded by the inner wall 15. The first lighting unit 21 has a first light source 2 in which a plurality of first light emitting units 4 for displaying a predetermined image are arranged.

The second lighting unit 41 is arranged outside the inner wall 15 so as to surround the outer peripheral portion of the first lighting unit 21. The second illumination unit 41 has a second light source 24 for illuminating a predetermined irradiation surface. The second light source 24 includes light sources 24a and 24c arranged so as to sandwich the first illumination unit 21 in the Y-axis direction, and light sources 24b and 24d arranged so as to sandwich the first illumination unit 21 in the X-axis direction.

Here, the configurations of the housing 10 and the first light source 2 will be described in more detail with reference to FIGS. 1 and 2. FIG. 2 is a sectional view taken along the line AA of FIG. 1 showing the lighting device 1 according to the embodiment.

As shown in FIG. 2, the housing 10 has a box shape in which the light extraction surface 11 facing the top surface portion 12 embedded in the ceiling is opened, and the light extraction surface 11 is Z of the housing 10. It is located at the end on the negative axis side. Further, the housing 10 has a flange 14 extending outward from the side wall 13 of the housing 10 so as to surround the end portion on the light extraction surface 11 side. Here, the "light extraction surface 11 side" means the side of the housing 10 extending in the Z-axis direction in the negative direction of the Z-axis. Similarly, with respect to the members other than the housing 10 extending in the Z-axis direction, the Z-axis negative direction side may be described as the "light extraction surface 11 side" for convenience.

The lighting device 1 is arranged so that the flange 14 is in contact with the ceiling surface 20. The lighting device 1 may be attached by any method. For example, a spring-shaped locking member is arranged on the side wall 13 of the housing 10 to be locked in an opening for accommodating the housing 10 provided on the ceiling, or a fixing member such as a screw is used to connect the flange 14 to the ceiling surface. 20 may be fixed, but the present invention is not limited to these.

Further, the first light source 2 includes a first substrate 3, a first light emitting unit 4, a first heat radiating plate 5, a first lighting device 8, and a first diffusion cover 9.

The first substrate 3 is a flat plate having an insulating property such as glass epoxy resin and having a substantially square shape in a plan view, and a wiring pattern formed of a conductive material such as copper foil is provided on the main surface 3a side. .. In addition, a resist layer is appropriately applied. When the material of the first substrate 3 is an insulating material, a ceramic material or a synthetic resin material may be applied. Further, the material of the first substrate 3 may be made of metal, and in such a case, it is preferable to apply a material having good thermal conductivity and excellent heat dissipation, such as aluminum. The first substrate 3 is attached so as to be in close contact with the first heat radiating plate 5 by, for example, screwing. A plurality of first light emitting units 4 are mounted on the main surface 3a of the first substrate 3. The first substrate 3 may be, for example, a rectangular flat plate having a longitudinal direction and a lateral direction in a plan view.

The first light emitting unit 4 includes a plurality of light emitting elements having different light emitting colors. The light emitting element includes, for example, an LED (Light Emitting Diode) chip arranged in a main body made of ceramics, and a translucent resin for molding such as an epoxy resin or a silicone resin that seals the LED chip. ..

The LED chip includes, for example, a blue LED chip that emits blue light. A phosphor is mixed in the translucent resin, and in order to be able to emit white light, a yellow phosphor that emits yellowish light, which has a complementary color relationship with blue light, is used. There is. The LED chip may include, for example, a red LED chip that emits red light or a green LED chip that emits green light. Further, the LED chip may include, for example, an LED chip that emits light bulb color light or an LED chip that emits daylight color light.

Further, as the LED included in the first light emitting unit 4, the LED chip may be mounted directly on the first substrate 3, or a bullet-shaped LED may be mounted, and the mounting method and type may be different. It is not particularly limited. In the present embodiment, a total of 144 first light emitting units 4 having 12 rows and 12 columns are arranged on the first substrate 3 at equal intervals along the X-axis direction and the Y-axis direction. These first light emitting units 4 are connected in parallel with the first lighting device 8 and are configured to be capable of dimming and full-color toning independently.

The first heat radiating plate 5 is a flat plate having high heat radiating properties arranged on the back side of the first substrate 3, and dissipates heat transmitted from the first light emitting unit 4 via the first board 3. In the present embodiment, the first heat radiating plate 5 is integrally formed with the inner wall 15. The first heat radiating plate 5 may be made of a member different from the inner wall 15.

The first lighting device 8 is connected to a commercial AC power source, and receives the commercial AC power source to generate a DC output. The first lighting device 8 includes a first power supply control device 6 and a first dimming and toning control device 7. The first power supply control device 6 is configured to light-control the first light source 2 having the first light emitting unit 4. Further, the first dimming toning control device 7 is configured to dimming and controlling the first light source 2 having the first light emitting unit 4.

The first lighting device 8 is connected to each of the light emitting elements housed in the first light emitting unit 4 via the first substrate 3, supplies a direct current output to the light emitting element, and controls the lighting of the light emitting element. As a result, in the first light emitting unit 4, the light emitted by each light emitting element is combined and emitted.

The first diffusion cover 9 is made of a translucent material such as acrylic or polycarbonate. The first diffusion cover 9 has a substantially square flat plate shape in a plan view, is bridged from an inner wall 15 surrounding the first illumination unit 21 to a support portion 16 bent in the XY plane direction, and is bridged in a plan view. It is supported so as to overlap the first substrate 3. Further, the first diffusion cover 9 is subjected to a frost treatment to have a function of diffusing the light emitted from the first light emitting unit 4. A diffusing material may be appropriately mixed in the first diffusing cover 9 to impart light diffusivity.

Next, the configuration of the second light source 24 will be described in more detail with reference to FIGS. 1, 2, and 3. FIG. 3 is a sectional view taken along line BB of FIG. 1 showing the lighting device 1 according to the embodiment.

The light sources 24a, 24b, 24c, and 24d constituting the second light source 24 are all long members extending in the X-axis direction or the Y-axis direction. Therefore, in the following, the configuration of the light source 24a will be described as an example of the second light source 24.

As shown in FIG. 3, the light source 24a has a second substrate 33, a second light emitting unit 34, a second heat radiating plate 35, a second lighting device 28, and a second diffusion cover 36.

The second substrate 33 is a long member extending in the X-axis direction. The second substrate 33 may be made of the same material as the first substrate 3, or may be different. The second substrate 33 is attached so as to be in close contact with the second heat radiating plate 35 by, for example, screwing. A plurality of second light emitting units 34 are mounted on the main surface 33a of the second substrate 33 along the longitudinal direction of the second substrate 33.

The second light emitting unit 34 includes a plurality of light emitting elements having different color temperatures. The second light emitting unit 34 is similar to the light emitting element housed in the first light emitting unit 4, for example, an LED chip arranged in a main body made of ceramics, and an epoxy resin or silicone that seals the LED chip. Includes a translucent resin for molding such as resin.

The second light emitting unit 34 has, for example, a light emitting element including an LED chip configured to emit light bulb-colored light and a translucent resin. Further, the second light emitting unit 34 has, for example, a light emitting element including an LED chip and a translucent resin configured to emit white light having a color temperature different from that of the light bulb color light. The second light emitting unit 34 may be configured to emit daylight white light or daylight color, for example.

Further, as the LED included in the second light emitting unit 34, the LED chip may be mounted directly on the second substrate 33, or a bullet-shaped LED may be mounted, and the mounting method and type may be different. It is not particularly limited. In the present embodiment, a plurality of second light emitting units 34 are arranged on the second substrate 33 at equal intervals along the longitudinal direction of the second substrate 33. These second light emitting units 34 are connected in series with the second lighting device 28, and are configured to be switchable so as to have the same color temperature.

The second heat radiating plate 35 is a flat plate having high heat radiating properties arranged on the back side of the second board 33, and dissipates heat transmitted from the second light emitting unit 34 via the second board 33. The second heat radiating plate 35 may be made of the same material as the first heat radiating plate 5, or may be made of another member.

The second lighting device 28 is connected to a commercial AC power source, and receives the commercial AC power source to generate a DC output. The second lighting device 28 includes a second power supply control device 26 and a second dimming and toning control device 27. The second power supply control device 26 is configured to control the lighting of the second light source 24 having the second light emitting unit 34. Further, the second dimming toning control device 27 is configured to dimming and controlling the second light source 24 having the second light emitting unit 34.

The second lighting device 28 is connected to each of the light emitting elements housed in the second light emitting unit 34 via the second substrate 33, supplies a direct current output to the light emitting element, and controls the lighting of the light emitting element. As a result, the second light emitting unit 34 synthesizes and emits the light emitted by each light emitting element.

The second diffusion cover 36 is made of a translucent material such as acrylic or polycarbonate. The second diffusion cover 36 has an elongated shape along the longitudinal direction of the second substrate 33, and is fixed so as to be fitted to, for example, a mounting portion (not shown). Further, the second diffusion cover 36 has a function of diffusing the light emitted from the second light emitting unit 34 by being subjected to a frost treatment. A diffusing material may be appropriately mixed in the second diffusing cover 36 to provide light diffusivity.

As described above, in the second illumination unit 41, the second light source 24 in which a plurality of second light emitting units 34 including a plurality of light emitting elements having different color temperatures are arranged emits light from the second light emitting unit 34 and the second diffusion cover 36. The light corresponding to the configuration of the above is irradiated toward the lower side of the lighting device 1 to illuminate a predetermined irradiation surface.

In the above description, the second light source 24 has a second light emitting unit 34 accommodating a plurality of light emitting elements having different color temperatures. However, if the second light source 24 is configured to have a variable color temperature, the second light source The configuration of 24 is not particularly limited. For example, instead of the second light emitting unit 34 described above, two types of LEDs having different color temperatures can be alternately arranged along the longitudinal direction of the second substrate 33, and one or both of these LEDs can be lit. It may be configured as.

Further, among the housing 10 and the inner wall 15 included in the lighting device 1 according to the embodiment, the surface of the portion to which the light emitted from the first light emitting unit 4 and the second light emitting unit 34 reaches is a reflective surface. It may be configured. Further, for example, a white paint having light reflectivity may be applied to each of the above-mentioned portions to form a reflective surface, or a metal reflector may be formed in advance. As a result, the light emitted from the first light emitting unit 4 and the second light emitting unit 34 can be efficiently used.

As described above, the lighting device 1 according to the first embodiment has a housing 10, a first lighting unit 21, and a second lighting unit 41. The housing 10 has a light extraction surface 11. The first lighting unit 21 is arranged on the center side of the housing 10, has a plurality of first light emitting units 4 capable of adjusting the output light, and displays a predetermined image. Further, the second illumination unit 41 is arranged around the first illumination unit 21 in the direction along the light extraction surface 11 and illuminates a predetermined irradiation surface. Thereby, according to the lighting device 1 according to the first embodiment, it is possible to provide a lighting device suitable for spatial effect and spatial lighting.

Further, the first illumination unit 21 and the second illumination unit 41 according to the first embodiment preferably emit light having different hues from each other. Specifically, for example, the irradiation light from the second light source 24 is configured to be white, and the irradiation light from the first light source 2 is configured to be a color other than white such as blue or red. As a result, it is possible to provide the lighting device 1 suitable for spatial effect and spatial lighting in which the irradiation light from the first lighting unit 21 and the second lighting unit 41 is harmonized. The light emitted from the first illumination unit 21 does not have to be a single color, and may display, for example, an image expressing a gradation.

Further, the second illumination unit 41 according to the first embodiment emits light having a higher brightness than the first illumination unit 21. As a result, it is possible to provide a lighting device 1 suitable for spatial effect and spatial lighting in which the light emitted from the first lighting unit 21 and the second lighting unit 41 is harmonized.

Further, the illuminating device 1 according to the first embodiment further has an inner wall 15 between the first illuminating unit 21 and the second illuminating unit 41 that protrudes from the end portion of the first illuminating unit 21 on the light extraction surface side. The second illumination unit is arranged so that the end portion 36a on the light extraction surface side is separated from the light extraction surface 11 from the end portion 16a on the light extraction surface side of the inner wall 15. Specifically, the end of the second light source 24 on the light extraction surface side, that is, the surface 36a (see FIG. 3) of the second diffusion cover 36 is the end of the first light source 2 on the light extraction surface side, that is, the first. It is arranged so as to be separated from the light extraction surface 11 by a length L1 from the surface 9a (see FIG. 2) of the diffusion cover 9. As a result, it is possible to provide the lighting device 1 suitable for spatial effect and spatial lighting in which the irradiation light from the first lighting unit 21 and the second lighting unit 41 is harmonized.

Further, the second illumination unit 41 according to the first embodiment preferably has an acute angle of 45 ° or less, and more preferably 30 ° or more and 40 ° or less, which is shielded by the inner wall 15. As a result, it is possible to provide the lighting device 1 suitable for spatial effect and spatial lighting in which the irradiation light from the first lighting unit 21 and the second lighting unit 41 is harmonized.

Here, the “shading angle θ” means that the direct light emitted from the second light source 24 is shielded by the inner wall 15 having a light-shielding property, so that the direct light emitted from the first light source 2 in the negative direction of the Z axis is emitted. It is a theoretical value that indicates the upper limit angle at which light is not mixed with the XY plane as a reference.

Taking the first embodiment shown in FIG. 2 as an example, in a cross-sectional view, the angle formed by the line segment connecting the ridge line 17 of the inner wall 15 and the ridge line 24 g of the second light source 24 (light source 24b) and the X-axis is "No. The shading angle θ of the two light sources 24 (light source 24b) is called ". The ridge line 17 is an intersection line between the outer surface 15a of the inner wall 15 and the end portion of the inner wall 15 on the light extraction surface side, that is, the lower surface 16a. The ridge line 24g is the surface 36a of the second light source 24 (light source 24b) located on the side wall 13 side of the housing 10 and the end surface 36a of the second diffusion cover 36 which is the end of the second light source 24 on the light extraction surface side. It is a crossing line with.

If the shading angle θ becomes too small, the irradiation light from the first light source 2 and the second light source 24 is excessively mixed, and it becomes difficult to visually recognize the image based on the irradiation light from the first light source 2. In some cases. Further, if the shading angle θ becomes too large, the irradiation light from the first light source 2 and the second light source 24 may be separated, and the irradiation light may not be sufficiently harmonized.

The shading angle θ can be adjusted, for example, by changing the positions of the light source 24b in the X-axis direction and the Z-axis direction. The shading angle θ can also be adjusted by changing the length of the inner wall 15 extending in the Z-axis direction, that is, the position of the end portion of the inner wall 15 on the light extraction surface side.

Next, the configuration of the second light source 24 will be further described with reference to FIGS. 3 and 4. FIG. 4 is a cross-sectional view showing a second light source 24 included in the lighting device 1 according to the first embodiment. In FIG. 4, the configuration of the light source 24a will be described as an example of the second light source 24 as in FIG.

As shown in FIG. 4, the light source 24a has a main body portion 22 and a light emitting portion 23 that are detachable from each other. That is, FIG. 4 shows a light source 24a from which the light emitting unit 23 is removed from the lighting device 1 shown in FIG.

The main body 22 includes a main body side connector 29 having a recess 30 (hereinafter referred to as “connector 29”) and a main body side connector 31 having a recess 32 (hereinafter referred to as “connector 31”). The connector 29 is electrically connected to the second lighting device 28 via the wiring 40. Further, the connector 31 is electrically connected to the second lighting device 28 via the wiring 42.

On the other hand, the light emitting portion 23 includes a convex light emitting portion side connector 38 (hereinafter, referred to as “connector 38”) corresponding to the concave portion 30 of the connector 29 and a convex light emitting portion side connector corresponding to the concave portion 32 of the connector 31. 39 (hereinafter referred to as “connector 39”) is included. The connectors 38 and 39 are each electrically connected to a wiring pattern (not shown) on the second substrate 33.

When the light emitting unit 23 is attached to the main body 22, the connectors 38 and 39 of the light emitting unit 23 are inserted into the recess 30 of the connector 29 and the recess 32 of the connector 31 of the main body 22, respectively, and the main body 22 The contact surface 25 and the contact surface 37 of the light emitting portion 23 are brought into close contact with each other. As a result, the light source 24a is electrically connected to the main body 22 and the light emitting unit 23.

As shown in FIG. 4, the wirings 40 and 42 that electrically connect the second lighting device 28 and the light emitting unit 23 of the main body 22 are housed inside the main body 22, and the second substrate 33 and the second are second. No member corresponding to the wirings 40 and 42 is arranged between the diffusion cover 36 and the diffusion cover 36. Therefore, the light emitted from the second light emitting unit 34 is not blocked by the time it reaches the second diffusion cover 36, and can be appropriately used as the irradiation light from the light source 24a.

[Modification of Embodiment 1]
FIG. 5 is a cross-sectional view showing the lighting device 1 according to the modified example 1 of the first embodiment, and FIG. 6 is a cross-sectional view showing the lighting device 1 according to the modified example 2 of the first embodiment. The lighting device 1 shown in FIGS. 5 and 6 has the same configuration as the lighting device 1 according to the first embodiment, except for the shape of the second diffusion cover 36.

The lighting device 1 shown in FIG. 5 differs from the lighting device 1 according to the first embodiment in that it includes a second diffusion cover 59 that is convexly curved with respect to the irradiation surface instead of the flat plate-shaped second diffusion cover 36. To do. Further, the lighting device 1 shown in FIG. 6 is provided with a second diffusion cover 69 that is concavely curved with respect to the irradiation surface in place of the flat plate-shaped second diffusion cover 36, as compared with the lighting device 1 according to the first embodiment. It's different.

According to the lighting device 1 according to the first and second modifications of the first embodiment, it is possible to realize a more three-dimensional space effect as compared with the lighting device 1 having the flat plate-shaped second diffusion cover 36.

Although FIGS. 5 and 6 show the second diffusion cover curved only in the X-axis direction, a second diffusion cover having a similarly curved shape may be used in the Y-axis direction as well.

Further, in FIGS. 5 and 6, the thickness of the second diffusion cover is shown to be substantially the same, but the thickness is not limited to this. For example, one of the front surface 59a and the back surface 59b of the second diffusion cover 59 shown in FIG. 5 may be formed along the XY plane. Further, one of the front surface 69a and the back surface 69b of the second diffusion cover 69 shown in FIG. 6 may be formed so as to be along the XY plane.

[Embodiment 2]
FIG. 7 is a plan view showing the lighting device according to the second embodiment. As shown in FIG. 7, the lighting device 1A according to the second embodiment includes a housing 10, an inner wall 15, a first lighting unit 21, and a second lighting unit 41.

The lighting device 1A according to the second embodiment has a different arrangement of the second lighting unit 41 as compared with the lighting device 1 according to the first embodiment. That is, the second illumination unit 41 includes light sources 24a and 24c arranged around the first illumination unit 21 so as to sandwich the first illumination unit 21 in the direction along the light extraction surface 11.

According to the lighting device 1A according to the second embodiment, it has a housing 10, a first lighting unit 21, and a second lighting unit 41. The housing 10 has a light extraction surface 11. The first lighting unit 21 is arranged on the center side of the housing 10, has a plurality of first light emitting units 4 capable of adjusting the output light, and displays a predetermined image. The second illumination unit 41 is arranged around the first illumination unit 21 in the direction along the light extraction surface 11 and illuminates a predetermined irradiation surface. Thereby, it is possible to provide the lighting device 1A suitable for space production and space lighting.

In FIG. 7, the inner wall 15 is arranged so as to surround the first lighting unit 21, but the inner wall 15 may be arranged between the first lighting unit 21 and the second lighting unit 41. That is, it is not necessary to provide the inner wall 15 at a place where the second lighting unit 41 is not arranged between the first lighting unit 21 and the housing 10. Further, for example, when the first illumination unit 21 has a rectangular shape in a plan view, the second illumination unit 41 may be arranged along the longitudinal direction of the first illumination unit 21 in a plan view, and may be arranged along the lateral direction. May be placed in.

Further, in the above description, the lighting devices 1 and 1A have been described as being a ceiling-embedded type, but may be a ceiling-mounted type or a ceiling-suspended type. In such a case, the flange 14 of the housing 10 is unnecessary. Further, the lighting devices 1 and 1A may be mounted on a place other than the ceiling, for example, a wall surface.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, as well as in the scope of the invention described in the claims and the equivalent scope thereof.

1, 1A Lighting device 2 First light source 3 First substrate 4 First light emitting unit 8 First lighting device 9 First diffusion cover 10 Housing 11 Light extraction surface 15 Inner wall 21 First lighting unit 24 Second light source 24a, 24b, 24c, 24d Light source 28 Second lighting device 33 Second substrate 34 Second light emitting unit 36, 59, 69 Second diffusion cover 41 Second lighting unit

Claims (5)

With a housing having a light extraction surface;
The housing is arranged on the center side of the output light of the toned capable blue light, red light has a green light or a plurality of light emitting units, a for displaying a representation or predetermined image gradient With 1 lighting unit;
A second illuminating unit arranged around the first illuminating unit in a direction along the light extraction surface and having a plurality of white light emitting units for illuminating a predetermined illuminating surface;
With the first cover covering the first lighting unit;
With the second cover covering the second lighting unit;
A lighting device characterized by comprising. The lighting device according to claim 1, wherein the first lighting unit and the second lighting unit emit light having different hues. The lighting device according to claim 1 or 2, wherein the second lighting unit emits light having a brightness higher than that of the first lighting unit. An inner wall between the first lighting unit and the second lighting unit that protrudes from the end of the first lighting unit on the light extraction surface side;
Further equipped,
The second lighting unit is characterized in that the end portion on the light extraction surface side is arranged so as to be farther from the light extraction surface than the end portion on the light extraction surface side of the inner wall. The lighting device according to any one of 3 to 3. The lighting device according to claim 4, wherein the second lighting unit has an acute angle of 45 ° or less that is shielded by the inner wall.

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