JP2016058349A - Luminaire with projector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire having high degree of freedom of being capable of illuminating any place in a room without electrical wiring.SOLUTION: A luminaire with projector includes, in a luminaire body to which power is supplied by a power source line with a main lamp of a ceiling, a projector using an LED light source whose direction is variable, and a light receiver receiving finely converged light beam radiated from the projector. The light receiver is easily attached to the ceiling and can be arranged at a free position, and irradiates a necessary direction with the light beam to distribute light to a portion requiring illumination.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an illumination device in which a projector is added to a ceiling lamp.

  With the use of LEDs in the illuminating device light source, the degree of freedom in designing the illuminating device is higher than that in the conventional illuminating device using a relatively large light source such as a conventional incandescent bulb or fluorescent lamp. Accordingly, lighting devices having various structures can be considered, but on the other hand, it is normal that only the power wiring for one ceiling lamp is installed on the ceiling of a general household. In such a situation, in order to arrange various lighting devices in the room, it is necessary to provide power supply wiring at the same time, and electric wiring is spread around the room. In order to improve this, it is necessary to distribute energy to the lighting device to be installed in some form.

  As a method, wireless power transmission using magnetic resonance can be considered, but there are many problems such as transmission loss and a large power transmission mechanism. On the other hand, a method of directly projecting light is promising because of its high transmission efficiency.

JP 2011-154829 A

  In the description of Patent Document 1, a configuration in which light is guided to a portion different from a light source by a configuration of a projector and a light guide plate is illustrated. However, with this configuration, it is not possible to realize a free light source and light receiver position, and the arrangement in the room is fixed. In addition, when the layout is changed, there is a problem that construction is necessary and the degree of freedom of change is small.

  Accordingly, an object of the present invention is to provide a lighting device having a high degree of freedom that enables lighting of a free position in a room without electric wiring.

  In order to achieve the above object, the main feature of the illumination device of the present invention is that a plurality of projectors irradiate the illumination device body with a light beam from a light source toward the outside of the illumination device body in a direction along the ceiling surface. And an optical path conversion unit that converts the optical path of the light beam from the projector.

  That is, according to this configuration, it is possible to provide a light irradiation surface by a main light source installed on the ceiling near the center of the room and an optical path conversion unit (light receiver) having a large degree of freedom in arrangement.

  Specifically, a projector using an LED light source whose direction is variable to the illuminating device main body fed by a power line attached to the main lamp on the ceiling, and a receiver that receives a thinly converged light beam emitted from the projector And providing a lighting device that can be easily mounted on the ceiling and can be placed at any position, and irradiates a light beam in a necessary direction to distribute the light to a portion requiring illumination. Can do. In this method, since the transmission of light energy is light itself, it can be delivered to the light receiver with very little loss.

  ADVANTAGE OF THE INVENTION According to this invention, the illuminating device which has the high freedom degree which can illuminate the free position of a room without electrical wiring can be provided.

The figure which shows the whole structure of the illuminating device of this invention. The figure which shows the in-room layout of the illuminating device of this invention. The figure which shows the Example of the structure by the side of the light projector of the illuminating device of this invention. The figure which shows the Example of the structure by the side of the light projector of the illuminating device of this invention. The figure which shows the Example of the structure by the side of the light projector of the illuminating device of this invention. The figure which shows the Example of the structure by the side of the light projector of the illuminating device of this invention. The figure which shows the function by the side of the light receiver of the illuminating device of this invention. The figure which shows the layout expansion function by the side of the light receiver of the illuminating device of this invention. The figure which shows the irradiation area expansion by the layout expansion function by the side of the light receiver of the illuminating device of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a diagram showing an overall structure (ceiling light system) of a lighting device to which the present invention is applied. The lighting device main body 1 is disposed on the surface of the ceiling 5, and the light receiver 3 is disposed around the ceiling 5. The illuminating device main body 1 is provided with a projector for projecting a light beam to the light receiver 3 together with a diffused light emitting surface (sade) 2 of the illuminating device main body used as normal illumination. A light beam is irradiated from the light emitting unit 18 toward the light receiver 3 along the surface of the ceiling 5, and the light receiver 3 changes the direction of the received light beam and irradiates light in a necessary direction. In the configuration shown in this figure, the light beam received by the light receiver 3 is applied to the floor 7 and mainly illuminates the range indicated by the light receiver light irradiation surface 4.

  With this configuration, it is possible to efficiently illuminate the peripheral portion of the room (the region of the light receiving light irradiation surface 4 shown in the drawing), etc., which is dark only by the lighting device main body 1 with the light receiving device 3. In the present invention, since no power is required for the light receiver 3, it is not necessary to provide power supply wiring, and it is only necessary to install it on the ceiling 5, and it can be installed at a free position by simple construction.

  If the direction of the projector of the illuminating device main body 1 cannot be changed, the installation direction of the light receiver 3 is fixed with respect to the illuminating device main body 1, and the degree of freedom of arrangement is set so that the distance from the light receiving device 3 can be set. This places great restrictions on lighting design. This problem can be widened to some extent by making the direction of the emitted light from the projector attached to the illuminating device main body variable.

  FIG. 2 shows the light irradiation range of the floor surface when the variable angle of the emission direction from one projector is 90 degrees. The light irradiable region 8A indicates a range that can be illuminated by the light receiver 3A. Similarly, each of the light irradiable regions 8B-8D indicates a range that can be illuminated by the light receivers 3B, 3C, (3D). Each of the light irradiable areas 8A-8D has an area to be illuminated in an overlapping manner, and as shown in the figure, almost the entire area of the floor 7 can be covered by the light receivers 3A, 3B, 3C, (3D). .

  In this embodiment, the power source is supplied only to the lighting device main body, and the light receiver (described in detail in Examples 6 and 7) does not require a power source.

  Therefore, in the invention shown in this embodiment, the light receiver can be easily mounted on the ceiling and can be arranged at any position, and the light beam is irradiated in a necessary direction to distribute the light to a portion requiring illumination. It has an effect that can be.

  In addition, when illuminating an adjacent area within the same light irradiable area with two light receivers (in this example, 3A and (3D)), an area where the light irradiable areas overlap (in this example, Except for 8A and 8D), other light irradiable areas cannot be irradiated.

Therefore, it is necessary to move the light receiver (3D) in the figure to the light receiver 3D and irradiate two adjacent areas in the same light irradiable area 8A.
Therefore, Examples 2 to 5 below show examples in which the degree of freedom of the layout is further improved.

  FIG. 3 is a diagram showing a second embodiment of the present invention and is a diagram for explaining the configuration of the projector of the illumination device and the operating range of the light beam from the projector. FIG. 3 a) is a diagram showing the configuration of the projector, and shows a state in which a plurality of projectors 20 are arranged inside the lighting device main body 1. FIG. 3 b) shows one projector 20, and shows a configuration in which an optical component is mounted on the substrate 19.

  The structure of the projector of the present embodiment is incorporated in the lighting device main body 1, and the projector 20 is installed. The feature of the present embodiment is that the adjustment of the light emission direction is performed by moving the entire projector 20.

  The projector 20 includes a light source LED 10 installed on the heat sink 13, a condenser lens 11 for condensing the light from the LED 10 toward the projection lens 9, and a reflection mirror 12a for folding the light beam in order to reduce the size of the projector unit. 12b, and a projection lens 9 for condensing the condenser lens image toward the light receiver. In the present embodiment, the above-described optical components 9 to 13 fixed on the projector 20 are integrally moved and moved on the illuminating device body 1, whereby the direction of the emitted light beam can be changed. The movement is performed, for example, by rotating the projector 20 in the circumferential direction with respect to the center of the lighting device body 1.

  The R-type and L-type shown in the figure have the same configuration as the optical components 9 to 13 described above, but the R-type and L-type are mirror images of each other, that is, in the direction of light passing through the projection lens 9. When folded back in line symmetry, they are in an overlapping relationship. The reason why the R type and the L type are juxtaposed is to avoid the limitation of the operation range when the R types or the L types are juxtaposed. Incidentally, in the configuration used in the present embodiment, when the L-type and the L-type are closest to each other, the center angle of both is 40 degrees (shown in the upper right in the figure), and the heat sink 13 is separated from each other. When the mold and the R type are closest to each other, the center angle of both is 20 degrees (shown in the upper left in the figure), and when the L type and the R type are closest to each other so that the heat sinks 13 are adjacent to each other Is 60 degrees (shown at the lower left in the figure).

  As shown in the figure, in the configuration in which the R type and the L type are juxtaposed, the interval between the two light beams can be reduced to a minimum of 20 degrees. Therefore, the degree of freedom of light receiver arrangement can be increased as compared with the case of FIG. Since the entire projector 20 is moved, the degree of freedom is increased in the movement method. As in the present embodiment, the arc may be moved substantially along the center of the illuminating device body 1, but this need not be the case. When moving on the arc, the projection lens 9 moves greatly along the periphery of the apparatus, and the opening of the apparatus becomes large. In order to avoid this, the projection lens 9 may be operated. In this case, the opening can be made small.

  In this embodiment, the optical components 9 to 13 are fixed on the substrate 19, and the direction of the emitted light is changed by moving or rotating the substrate, so that it takes time and effort to adjust each optical component. There are few features, and since there is no operating part of each component, there is a feature that the reliability concerning the component life can be maintained high.

FIG. 4 is a diagram showing a third embodiment of the present invention and is a diagram for explaining the configuration of the projector of the illumination device and the operating range of the light beam from the projector.
FIG. 4 is a diagram showing the configuration of the projector, and shows a state in which a plurality of projectors 20 are arranged inside the lighting device main body 1. In this figure, four projectors 20 are shown, but each of the projectors 20 has an optical component (not shown) mounted on a substrate 19 as shown in FIG. 3b). Specifically, the projector 20 folds the light source LED 10 installed on the heat sink 13, the condenser lens 11 that condenses the light from the LED 10 toward the projection lens 9, and the size of the projector unit. It comprises a target reflection mirror 12, a projection lens 9 for condensing the condenser lens image toward the light receiver, and a rotating mirror 14 for changing the direction of the light beam. The rotating mirror 14 rotates with respect to a rotation axis (not shown) provided in a direction perpendicular to a plane including the respective optical axes of the light beam from the light source LED 10 and the light beam from the projection lens 9. I do.

In this embodiment, since the rotating mirror 14 is installed in the emitting portion 18 of the projector 20, only the rotating mirror 14 needs to be rotated in order to change the direction of the light beam, and it is easy to change the direction of the light beam. There is a feature. This embodiment is characterized in that light is emitted in the radial direction by the rotation of the rotating mirror 14. Here, the radial direction refers to a direction from the center point of the lighting device body toward the peripheral direction. As shown in the figure, the operating range of the emitted light beam can be opened 90 degrees in the radial direction.
The rotation of the rotating mirror 14 may be manual or electric, but manual operation is preferable from the viewpoint of power supply wiring.

  FIG. 5 is a diagram showing a fourth embodiment of the present invention and is a diagram for explaining the configuration of the projector of the illumination device and the operating range of the light beam from the projector.

  FIG. 5 is a diagram showing the configuration of the projector, and shows a state in which a plurality of projectors 20 are arranged inside the lighting device main body 1. In this figure, four projectors 20 are shown, but each of the projectors 20 has an optical component (not shown) mounted on a substrate 19 as shown in FIG. 3b). Specifically, the projector 20 folds the light source LED 10 installed on the heat sink 13, the condenser lens 11 that condenses the light from the LED 10 toward the projection lens 9, and the size of the projector unit. It is composed of a projection lens 9 for condensing the images of the objective two reflecting mirrors 12a and 12b condenser lenses toward the light receiver, and a rotating mirror 14 for changing the direction of the light beam. The rotation axis of the rotating mirror 14 is the same as that described in the third embodiment.

  In the configuration shown in the present embodiment, the light beam immediately before entering the rotating mirror 12a is introduced from the center of the illuminating device main body in the outward direction, that is, the radial direction, and the rotating mirror 12b changes the direction of the light beam to the tangential direction ( The direction intersecting the radial direction or the direction perpendicular to the radial direction).

When the rotating mirror 14 is arranged as indicated by A in the figure, the light is reflected in the direction indicated by α. Next, when the rotary mirror 14 is rotated to the position indicated by B, the light is reflected in the direction indicated by β. That is, light can be emitted in the opposite direction rotated 180 degrees.
That is, in this configuration, it is possible to irradiate light in the direction of two 90 degree ranges with respect to one emitting portion 18. In this case, since it is possible to irradiate light within a total range of 180 degrees per projector, it is possible to install two light receivers at almost all positions in the installed room, and the degree of freedom in layout can be greatly increased. There is a feature.

FIG. 6 is a diagram showing a fifth embodiment of the present invention and is a diagram for explaining the configuration of the projector of the illumination device and the operating range of the light beam from the projector.
FIG. 6 a) is a diagram showing the configuration of the projector, and shows a state in which a plurality of projectors 20 are arranged inside the luminaire main body 1. In this figure, four projectors 20 are shown, but each of the projectors 20 has an optical component mounted on a substrate 19 as shown in FIG.

  Specifically, the projector 20 folds the light source LED 10 installed on the heat sink 13, the condenser lens 11 that condenses the light from the LED 10 toward the projection lens 9, and the size of the projector unit. It comprises target reflecting mirrors 12a and 12b, a projection lens 9 for condensing the condenser lens image toward the light receiver, and a rotating mirror 14 for changing the direction of the light beam. Note that the rotation axis of the rotating mirror 14 is an axis (z direction) indicated by a one-dot chain line in the figure, and rotates around that axis (arrow in the figure).

  FIG. 6b) will be described in detail. 6b) is a view from the A direction shown in FIG. 6a), and FIG. 6a) is an xy plane, whereas FIG. 6b) is an xz perpendicular to the plane. Shows the surface. That is, the projector 20 according to the present embodiment has a three-dimensional structure in the z direction.

In FIG. 6b), the light from the light source LED 10 is reflected by the reflecting mirror 12a in the x direction, the reflected light is then reflected by the reflecting mirror 12b in the z direction, and the light passing through the projection lens 9 is rotated. Reflected by the mirror 14 in the x direction.
Here, the reflecting mirror 12b, the projection lens 9, and the rotating mirror 14 are seen to overlap in FIG. 6a).

  In the present embodiment, the light beam is once directed in the vertical direction by installing a rising mirror in the path of the light beam in the projector. This is a mechanism for changing the direction of the light by returning the vertical light to the horizontal direction again by the rotating mirror 14. According to this method, in order to direct the light beam once in the vertical direction, the direction of the light can be easily changed with a small rotating mirror 14 tilted at 45 degrees without using reflection at a shallow angle as in other methods. Can be changed. Therefore, the mechanism for changing the direction of light can be reduced.

FIG. 7 is a diagram illustrating the structure of the light receiver 3 of the present invention.
The light receiver 3 needs to receive the light beam projected from the projection lens 9 of the projector of the main body, change the direction of the light beam in a desired direction (mostly downward), and further spread the light distribution at an appropriate angle. Therefore, the light receiver includes a light receiver reflecting mirror 15 (approximately 45 degrees) and a diffusion plate 16. The light beam spread from the light receiver 3 irradiates the light receiving surface 4 on the floor.

  In this embodiment, the light receiver reflection mirror 15 is fixed to the light receiver 3 and the reflection angle is also fixed. The functions of the light receiving reflection mirror 15 and the diffusion plate 16 can be combined into one component by making a reflection mirror to which a diffusion function is added. In this case, only the light receiver reflection mirror 15 with a diffusion function is required, and the diffusion plate 16 is not necessary.

  FIG. 8 is a diagram for showing an embodiment of a structure for expanding the irradiation range by changing the direction of the reflected light of the light receiver 3 of the present invention.

  By making the direction of the light receiving reflector mirror 15 or the light receiving body 3 in the light receiving device variable, the light receiving surface 4 from the light receiving device can be made variable even if light from the projector of the main body is received from the same direction. can do. In this figure, the illumination range is changed by changing the direction of the light receiving mirror 15.

According to this method, as shown in FIG. 9, in addition to the illumination range centered directly below the conventional photoreceiver, an illumination range for the variable range of the photoreceiver is added, so a wider range of illumination is possible. become.
FIG. 9 is a diagram showing the irradiation area expansion by the layout expansion function on the light receiver side of the illumination device of the present invention. Since the direction of the main body of the light receiver 3C is variable, a circular area around the light receiver 3C indicates the irradiation area. The same irradiation area is shown for the other light receivers 3A, B, and D. Therefore, for example, as compared with the irradiation area 8A shown in FIG. 2, the irradiation area is greatly enlarged as shown by the enlarged irradiation surface 17A in FIG. Similarly, the irradiation area of 3B-3D shown in FIG. 2 is enlarged like the enlarged irradiation surface 17B-17D.

In addition, this invention is not limited to an above-described Example, Various modifications are included.
For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.

1: Lighting device body,
2: Diffuse light emitting surface,
3, 3A, 3B, 3C, 3D: Receiver
4: Receiver light irradiation surface,
5: Ceiling,
6: Wall,
7: Floors 8A, 8B, 8C, 8D: Light irradiable area,
9: Projection lens
10: Light source LED,
11: Condenser lens
12, 12a, 12b: reflection mirror,
13: heat sink,
14: Rotating mirror,
15: Receiver reflector mirror,
16: Diffuser
17A, 17B, 17C, 17D: enlarged irradiation surface,
18: injection part,
19: substrate
20: Floodlight.

Claims (10)

  The illumination device main body includes a plurality of projectors that irradiate a light beam from a light source toward the outside of the illumination device main body, and an optical path conversion unit that converts an optical path of the light beam from the projector. Lighting device.   The projector includes an optical system including a light source including an LED, a projection lens that condenses a light beam from the light source, a reflection mechanism that converts an optical path of the light beam, and an irradiation direction of the light beam can be changed. The illumination device according to claim 1, further comprising: an irradiation direction adjustment mechanism for performing the operation.   The illumination apparatus according to claim 2, wherein the irradiation direction adjusting mechanism is a mechanism that adjusts the irradiation direction of the light beam by moving a substrate on which the optical system is mounted.   The irradiation direction adjustment mechanism is a mechanism that adjusts the irradiation direction of the light beam by changing the direction of a reflection mechanism installed on the optical axis through which the light beam has passed through the projection lens. The lighting device according to claim 2.   The irradiation direction adjusting mechanism is configured such that the light beam propagating in the radial direction of the illuminating device main body is set as the radial direction by a rotatable reflection mechanism installed on the optical axis through which the light beam has passed through the projection lens. The lighting device according to claim 2, wherein the lighting device is a mechanism that changes a direction in a tangential direction that intersects.   The irradiation direction adjustment mechanism propagates the converted light beam in a direction horizontal to the substrate surface, and a first reflection mechanism that converts the light beam from the light source in a direction perpendicular to the substrate surface. The lighting device according to claim 2, further comprising a rotatable second reflecting mechanism. A plurality of projectors that irradiate a light beam from a light source toward the outside of the lighting device body on the lighting device body attached to the ceiling surface;
A light receiving device installed outside the lighting device main body and receiving a light beam from the light projector and converting an optical path toward a floor surface.   The projector includes an optical system including a light source including an LED, a projection lens that condenses a light beam from the light source, a reflection mechanism that converts an optical path of the light beam, and an irradiation direction of the light beam can be changed. The illumination device according to claim 7, further comprising: an irradiation direction adjustment mechanism for performing the operation.   The lighting device according to claim 7, wherein the light receiver includes a reflection mirror, and the light path is converted by the reflection mirror.   The reflection mirror has a rotation mechanism that changes an incident angle with respect to the light beam from the projector, and converts the optical path toward the floor surface by adjusting the incident angle. The lighting device described.

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