JP7267017B2 - Laser light irradiation device, light emitting system and indirect lighting system - Google Patents

Description

The present invention relates to a laser beam irradiation device, a light emitting system and an indirect lighting system.

A conventional indirect lighting device illuminates a wall surface evenly by arranging a plurality of light sources in a line or overlapping them. Therefore, the size of the lighting fixture is large and the configuration is complicated (for example, Patent Documents 1 and 2).
In conventional indirect lighting, a plurality of lighting fixtures are arranged in a row in an installation space provided near the ceiling to uniformly illuminate the wall surface and the like. Therefore, it was necessary to carry out wiring work and installation work according to the number of installed units. Also, when installed in a narrow space, heat was trapped.

Patent No. 4527230 Patent No. 4804429

SUMMARY OF THE INVENTION An object of the present invention is to provide a laser light irradiation device that performs indirect illumination with a simple configuration.

The laser beam irradiation device of the present invention is
a laser generator that generates laser light;
an irradiation unit that controls the laser light to be linear light and irradiates a light emitter with the linear light, thereby causing an irradiation region of the light emitter that is irradiated with the linear light to emit light.

According to the laser beam irradiation device of the present invention, it is possible to save labor in constructing indirect lighting equipment, simplify the wiring of the lighting device, and suppress the temperature rise in the installation space.

Fig. 2 is a diagram of the first embodiment, showing a light emitting system 11; 1 is a diagram of the first embodiment, and is a perspective view of a light emitting system 11. FIG. FIG. 4 is a diagram of Embodiment 1 and is a diagram for explaining a linear light 74; FIG. 4 is another diagram for explaining the linear light 74 in the diagram of the first embodiment; FIG. 4 is a diagram of the first embodiment, showing a configuration in which the laser beam irradiation device 70 includes a cooling unit 60; 1A and 1B are diagrams of Embodiment 1, showing a front view, a side view, and a bottom view showing a mode in which the light emitting system 11 is used indoors. FIG. 2 is a diagram of the first embodiment and shows a light emitting system 12; FIG. 10 is a plan view of the room in which the light emitting system 13 is arranged in the diagram of the first embodiment; FIG. 2 is a perspective view of a room in which a light emitting system 13 is installed in the diagram of the first embodiment; Fig. 10 is a diagram of the first embodiment, showing a part of Fig. 9 and showing the installation position of the laser beam irradiation device 70; FIG. 11 is a diagram of the first embodiment, showing the positional relationship among the laser beam irradiation device 70, the mirror 61, the light emitter 82, and the hanging wall 84, viewed from the direction D in FIG. 10; FIG. 11 is a view of the first embodiment, showing a mounting state of the mirror 61 as seen from the direction D in FIG. 10; FIG. 2 is a plan view of a room in which a light emitting system 13 is installed in the diagram of the first embodiment;

Embodiment 1.
Lighting systems 11, 12, and 13 of Embodiment 1 will be described with reference to FIGS. 1 to 13. FIG. The lighting systems 11, 12, 13 relate to indirect lighting.
The light emitting systems 11, 12, and 13 described below each have a laser diode, emit light by irradiating a light emitter installed in at least one of a recess, a ceiling, and a wall with the laser diode, and emit light from the light emitter. It can be applied to an indirect lighting system that illuminates at least one of a surface, a wall surface, and a floor surface.
Here, the recess corresponds to, for example, a portion formed by a wall 88, a ceiling 81, and a hanging wall 84 in FIG. 12, which will be described later.

*** Configuration description ***
FIG. 1 shows a lighting system 11 .
FIG. 2 is a perspective view of the lighting system 11. FIG. The light emitting system 11 includes a laser light irradiation device 70 and a light emitter 82 .

(Laser beam irradiation device 70)
The laser beam irradiation device 70 includes a laser generator 71 and an irradiation unit 73 .

(Laser generator 71)
The laser generator 71 generates laser light 72 . The laser generator 71 has a laser diode and generates a laser beam 72 with the laser diode. The laser light 72 is a beam, and when irradiated as it is, it becomes a substantially point-like shape (a small circle). Preferably, the illumination device is a blue laser. A white color can be obtained by combining a blue laser and a phosphor. Note that the laser light irradiation device 70 may be an ultraviolet laser. A laser generator 71 generates a laser beam 72 from an alternating current power supply AC or a direct current power supply DC.

(Irradiation unit 73)
The irradiation unit 73 receives the laser light 72, controls the laser light 72 into linear light 74 that makes the irradiation surface linear, and irradiates the light emitter 82 with the linear light 74. The irradiation area 75 irradiated with the linear light 74 is caused to emit light. The irradiation area 75 corresponds to an intersection line formed by the intersection of the linear light 74 and the surface of the light emitter 82 . A light-emitting region 83 is a light-emitting area of the intersection line. The linear light 74 is emitted from the irradiation section 73 in a plane. A member such as a diffractive optical element can be used as the irradiation unit 73 . Schematically, the linear light 74 forms a triangle ABC when the plane of the light emitter 82 is irradiated. Of the linear light 74 , the laser light corresponding to the side AB is referred to as laser light 741 , and the laser light corresponding to side AC is referred to as laser light 742 . Regarding the linear light 74 , the portion corresponding to the side BC is the irradiation area 75 of the linear light 74 . As for the light emitter 82 , the illuminated region 75 emits light, and the portion of the light emitter 82 that emits light is the light emitting region 83 . The light emitting region 83 emits light linearly.
3 and 4 are diagrams for explaining the linear light 74. FIG. The XYZ coordinates in FIGS. 1 to 4 are the same. FIG. 3 is a view of FIG. 1 viewed from the XY plane. FIG. 4 is a view of FIG. 1 looking at the ZY plane. Since the linear light 74 is planarly irradiated from the irradiation unit 73, it will appear linear in FIGS.

(Luminous body 82)
The light emitter 82 is arranged on the ceiling 81, for example. The light emitter 82 is an elongated plate-like body.
The irradiation unit 73 causes the light emitter 82 to emit light with the linear light 74 . As the light emitter 82, a phosphor sheet containing a phosphor that emits light when excited by the irradiation of the linear light 74 can be used. Alternatively, as the light emitter 82, a diffusion material having a diffusion function for diffusing the linear light 74 can be used.

(Cooling unit 60)
FIG. 5 shows a configuration in which the laser beam irradiation device 70 includes the cooling section 60 . The laser beam irradiation device 70 may include a cooling section 60 that cools the laser generating section 71 . A cooling mechanism such as a fan or a heat sink can be used as the cooling unit 60 .

FIG. 6 shows three views of front, bottom and side views showing how the lighting system 11 is used indoors. The XYZ coordinates are the same in the three views. The front view shows a ceiling 81 , walls 89 and a floor 91 . A laser light irradiation device 70 irradiates linear light 74 in the left direction in the front view. In the front view, the hanging wall 84 is shown in dashed lines for convenience. Indirect illumination light 10 emitted from the light emitting region 83 by the laser light irradiation device 70 is emitted from the hanging wall 84 . As shown in the bottom view, the light emitting region 83 of the irradiation region 75 emits linear light.

(Light emitting system 12)
FIG. 7 is a diagram showing the lighting system 12. As shown in FIG. The light emitting system 12 uses three colors of laser light, red, green and blue, and mixes these colors. FIG. 7 shows front and bottom views of a room in which the lighting system 12 is arranged. The Z direction in the front view is the direction from the floor to the ceiling. The light emitting system 12 can change the output of each color and mix the colors to produce various colors of mixed light.
The light emitting system 12 includes a first laser beam irradiation device 70a, a second laser beam irradiation device 70b, a third laser beam irradiation device 70c, and a first light emitter 82a.
The first laser beam irradiation device 70a includes a first laser generator 71a that generates a red color, which is a first laser beam 72a of a first color, and a first linear beam 74a that emits the first laser beam 72a. , and irradiates the first light emitter 82a with the first linear light 74a.
The second laser beam irradiation device 70b includes a second laser generator 71b that generates a green color, which is a second laser beam 72b of a second color, and a second linear beam 74b that emits the second laser beam 72b. , and has a second irradiation section 73b that irradiates the first light emitter 82a with the second linear light 74b.
The third laser light irradiation device 70c includes a third laser generation unit 71c that generates blue, which is the third laser light 72c of the third color, and a third linear light 74c that emits the third laser light 72c. , and irradiates the first light emitter 82a with the third linear light 74c.
The first irradiation section 73a, the second irradiation section 73b, and the third irradiation section 73c emit the first linear light 74a, the second linear light 74b, and the third linear light 74c. By overlapping and irradiating the first irradiation region 75a of the first light emitter 82a, the first irradiation region 75a of the first light emitter 82a is caused to emit light.

When the light emitting system 12 mixes colors, the phosphor sheet may not be used, and the wall surface may be directly irradiated.

(Light emitting system 13)
The lighting system 13 will be described with reference to FIGS. 8-13. XYZ coordinates are common to FIGS. 8 to 13 . The light emitting system 13 has a configuration including a direction changing device 961 that reflects the linear light 74 emitted from the laser light irradiation device 70 . 8 to 13 differ from FIG. 6 in the installation position of the laser beam irradiation device 70. FIG.
FIG. 8 is a plan view of a room in which the lighting system 13 is arranged.
FIG. 9 is a perspective view of a room in which the lighting system 13 is installed.
FIG. 10 is a diagram showing a part of FIG. 9, showing the installation position of the laser beam irradiation device 70. As shown in FIG.
FIG. 11 shows the positional relationship among the laser beam irradiation device 70, the mirror 61, the light emitter 82, and the hanging wall 84, viewed from direction D in FIG. Note that the D direction is the opposite direction (-Y direction) to the Y direction in FIG.
FIG. 12 shows the mounting state of the mirror 61 as seen from direction D in FIG.

The light emitting system 13 includes a laser light irradiation device 70 , a light emitter 82 and a direction changing device 961 . The light emitting system 13 changes the irradiation direction of the linear light 74 with the direction changing device 961 . In the following, the direction changing device 961 and the mirror 61 will be described as an example.

The direction changing device 961 irradiates the linear light 74 toward the luminous body 82 by changing the irradiation direction of the linear light 74 that has entered, and the linear light 74 in the luminous body 82 . causes the irradiated area 75 to emit light.
A specific description will be given below.

In the XYZ coordinates of FIG. 8, the Z direction is the direction from the floor to the ceiling. The mirror 61 changes the direction of the linear light 74 emitted from the laser light irradiation device 70 at right angles. As shown in FIG. 8, by arranging one mirror 61 at the corner 90 of the room, one laser light irradiation device 70 can irradiate the L-shaped space with the indirect illumination light 10 . In the room as shown in FIG. 9, a laser beam irradiation device 70 is arranged at the corner of the ceiling as shown in FIG. The laser beam irradiation device 70 may be directly attached to the wall surface, or may be embedded in a hole made in the wall surface. Alternatively, the laser beam irradiation device 70 may be embedded in the ceiling 81 . The method of attaching the laser beam irradiation device 70 is the same for the light emitting systems 11 and 12 as well.
FIG. 13 is a plan view of a room similar to FIG. As shown in FIG. 13, by installing mirrors 61 at three corners of the ceiling, it is possible to illuminate the entire circumference of the ceiling with indirect lighting with one laser beam irradiation device 70 .

(Transparent material)
Note that the light emitter 82 may be arranged on a transparent member. By arranging the light emitters 82 on the transparent member, the transparent member can emit light from both sides.

(up and down detection)
The laser beam irradiation device 70 may be configured to sense the top and bottom (up and down) and change the irradiation direction. With this configuration, for example, the laser light irradiation device 70 can always irradiate upward (in the direction of the ceiling). A specific configuration is as follows. The laser beam irradiation device 70 has a sensor that detects the direction of gravity. The irradiation unit 73 changes the irradiation direction of the linear light 74 according to the direction of gravity detected by the sensor. For example, an acceleration sensor is used as the sensor. In this case, the laser light irradiation device 70 irradiates upward according to the direction of gravity detected by the sensor. The laser light irradiation device 70 is installed in an installation space near the ceiling, and irradiates the ceiling surface with light, but it is not preferable that the laser light directly enters the eyes. Therefore, with the above configuration, the laser beam is directed toward the ceiling, so safety is ensured.

(Installation position)
If the laser beam irradiation device 70 is installed in the vicinity of the floor surface, it cannot be irradiated to a desired location if there is a shielding object. For this reason, it is desirable to apply it to a place where an installation space for indirect lighting can be secured.

(Irradiated object)
Instead of the phosphor sheet, an object to be irradiated, such as wallpaper, may contain the phosphor. In that case, it will be possible to construct it by interior construction.

All of the laser light irradiation devices 70, 70a, 70b, and 70c described above are indirect lighting devices using laser diodes.

In addition, although an example in which the laser beam irradiation device 70 is used indoors has been described above, the laser beam irradiation device 70 or the laser beam irradiation device 70 and the light emitter 82 may be applied outdoors.

*** Effect of Embodiment 1 ***
According to the light emitting system 11 and the light emitting system 13, indirect illumination is possible with one laser light irradiation device 70. FIG. Therefore, it is possible to save labor in constructing the indirect lighting equipment and to simplify the wiring of the lighting device.
According to the light emitting system 12, indirect lighting of various colors can be achieved with a simple configuration.
When a person looks at a wall surface or a ceiling surface illuminated by lighting fixtures, in a configuration in which a large number of lighting fixtures are installed, people may be concerned about joints of light. For lighting systems 11, 12, 113, there is no seam problem.
Moreover, since maintenance is performed only on the laser beam irradiation device 70, labor can be saved.

10 Indirect Illumination Light 11, 12, 13 Light Emitting System 10a Light Emitting System 50 Sensor 60 Cooling Part 61 Mirror 70 Laser Light Irradiation Device 70a First Laser Light Irradiation Device 70b Second Laser Light Irradiation Device , 70c third laser beam irradiation device, 71 laser generator, 71a first laser generator, 71b second laser generator, 71c third laser generator, 72 laser beam, 72a first laser beam, 72b second laser light 72c third laser light 73 irradiation section 73a first irradiation section 73b second irradiation section 73c third irradiation section 74 linear light 74a first linear light 74b second linear light 74c third linear light 75 irradiation area 75a first irradiation area 81 ceiling 82 light emitter 82a first light emitter 83 light emission area 84 hanging wall , 86 wall, 87 wall, 88 wall, 89 wall, 90 corner, 91 floor, 961 direction changer.

Claims (9)

a laser generator that generates laser light;
an irradiation unit that controls the laser light to be linear light and irradiates a light emitter with the linear light, thereby causing an irradiation region of the light emitter to be irradiated with the linear light to emit light ;
a sensor that detects the direction of gravity;
with
The irradiation unit is
A laser light irradiation device that changes the irradiation direction of the linear light according to the direction of the gravity detected by the sensor . The irradiation unit is
causing the luminous body to emit light with the linear light;
The luminous body is
2. The laser beam irradiation device according to claim 1, further comprising a phosphor that emits light when excited by irradiation with said linear light. The irradiation unit is
causing the luminous body to emit light with the linear light;
The luminous body is
The laser beam irradiation device according to claim 1, having a diffusion function of diffusing the linear light. The luminous body is
4. The laser light irradiation device according to any one of claims 1 to 3, arranged on a transparent member. The laser beam irradiation device further
The laser beam irradiation device according to any one of claims 1 to 4 , further comprising a cooling section that cools the laser generating section. a laser generator that generates a laser beam; an irradiation unit that controls the laser beam into a linear beam and irradiates the linear beam; and a sensor that detects the direction of gravity . a laser light irradiation device that changes the irradiation direction of the linear light according to the direction of the gravity detected by the sensor ;
The linear light is incident, and by changing the irradiation direction of the incident linear light, the linear light is irradiated toward the luminous body, and the irradiation region of the luminous body to which the linear light is irradiated is determined. A light emitting system comprising: a light emitting redirection device. a first laser generator for generating a first laser beam of a first color; controlling the first laser beam to be a first linear beam; and converting the first linear beam into a first emission. a first laser beam irradiation device having a first irradiation unit for irradiating the body;
a second laser generator for generating a second laser beam of a second color; a second laser beam for controlling the second laser beam to be a second linear beam; a second laser light irradiation device having a second irradiation unit that irradiates the light emitter;
a third laser generator for generating a third laser beam of a third color; a third laser beam for controlling the third laser beam to be a third linear beam; A third laser light irradiation device having a third irradiation unit for irradiating the light emitter,
The first irradiation unit, the second irradiation unit, and the third irradiation unit are
By irradiating the irradiation area of the first light emitter with the first linear light, the second linear light, and the third linear light, the first light emitter A lighting system that illuminates the illuminated area of the It has a laser diode that generates laser light , an irradiation unit that controls the laser light into linear light and irradiates the linear light, and a sensor that detects the direction of gravity. The irradiating unit emits light by irradiating at least one of the luminous bodies installed therein, and the irradiating unit changes the direction of irradiation according to the direction of the gravity detected by the sensor to emit the light. An indirect lighting system that illuminates at least one of a ceiling surface, a wall surface, and a floor surface by a body. A luminous body having three laser diodes of different colors and installed in at least one of a recess, a ceiling, and a wall is illuminated by superimposed irradiation light from the three laser diodes, thereby causing the luminous body to emit light. An indirect lighting system that illuminates at least one of the ceiling surface, the wall surface, and the floor surface by

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