JPH08180718A - Lighting system - Google Patents

Abstract

PURPOSE: To provide a lighting system having a good appearance, which is equipped with a wide variable illuminating range and whose mirror surface part is difficult to see from indoors when it is installed inside the ceiling. CONSTITUTION: A lighting device according to the present invention includes a light body part 1 for projection of light from a light, source and a mirror surface part 2 having a rotary shaft 6 for changing the light distributing direction by varying the intersecting angle of the light from the light body with the optical axis. An optical axis direction moving part 8 moves the mirror surface part in the optical axis direction of the light projected from the light body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illuminating device capable of changing a light distribution direction by making a reflecting mirror movable.

[0002]

2. Description of the Related Art In a lighting device such as a spotlight attached to a ceiling material, the light distribution direction (irradiation direction) can be easily adjusted without removing the lighting device from the ceiling material and reattaching it. In order to achieve this, various light distribution variable methods have been devised. For example, in the above-described variable light distribution method, a method of using a mounting member that is interposed between the ceiling material and the lamp body so that the lamp body can be rotatably held with respect to the ceiling material, Alternatively, there is a method in which a reflecting mirror that reflects the irradiation direction from a lamp unit fixed to a ceiling member or the like is provided in the front, and the light distribution direction is changed by changing the direction of the reflecting mirror.

FIG. 8 and FIG. 9 are schematic views for explaining a conventional illuminating device adopting the latter light distribution varying method described above.
The lighting device shown in FIGS. 8 and 9 includes a lamp body portion 1 and a mirror surface portion 2.

The lamp body 1 has a light source inside and irradiates the mirror surface portion 2 provided in front of the lamp body 1 with irradiation light.

The mirror surface portion 2 receives and reflects the irradiation light from the lamp body portion 1, and has a rotation axis θ parallel to the plane of the ceiling material 3 and orthogonal to the optical axis of the irradiation light. There is.

The lamp body 1 and the mirror surface portion 2 are installed in a storage space behind the ceiling which is separated from the room by a ceiling material 3, and the ceiling material 3 reflects the reflected light from the mirror surface portion 2 into the room. It has an opening of a predetermined size L1 or L2 so that it can be irradiated.

Therefore, in the lighting device shown in FIG.
By controlling the rotation of the rotation axis θ with a servomotor or the like, the irradiation light from the lamp unit 1 can be varied within the range of the angle α1 from the light distribution direction B1 to the light distribution direction B3. Further, in the lighting device shown in FIG. 9, the rotation axis θ is controlled to be rotated by a servomotor or the like, so that the irradiation light from the lamp unit 1 is angled from the light distribution direction B4 to the light distribution direction B6. It can be changed in the range of α2.

The difference between the example of the conventional illuminating device shown in FIG. 9 and the example of the conventional illuminating device shown in FIG. 8 is that the size of the mirror surface portion 2 is increased to install the mirror surface portion 2. The point is that the position is separated from the lamp body 1 and the variable range in the light distribution direction is expanded.

[0009]

However, in the illuminating device as shown in FIG. 8 described above, the angle formed by the optical axis of the irradiation light and the mirror surface portion 2 is increased so that it is perpendicular to the ceiling material 3. When the optical axis of the reflected light is brought closer to parallel to the ceiling material 3 from the optical axis B1, the reflected light is blocked by the ceiling material 3 and the lamp unit 1 and cannot irradiate the room, and therefore the variable There was a problem that the irradiation range was narrow.

Further, in the illuminating device as shown in FIG. 9, the variable irradiation range is wide, but the irradiation light from the lamp unit expands as the distance from the lamp unit increases. A large-sized mirror surface portion 2 is required for reflection, and since the mirror surface portion 2 is provided at a position apart from the lamp body portion 1, the mirror surface portion 2 is rotated and the reflected light is reflected. There is a problem that the dimension L2 of the opening of the ceiling material 3 must be increased in order not to block it.

Furthermore, in the illumination device as shown in FIG. 8 and the illumination device as shown in FIG. 9, the angle formed by the mirror surface portion 2 and the optical axis of the irradiation light is increased so that the mirror surface portion 2 is the optical axis. On the other hand, when the mirror surface portion 2 is brought closer to the vertical, the mirror surface portion 2 projects downward from the ceiling material 3 and one end of the mirror surface portion 2 can be seen from the room, which is not preferable in terms of appearance.

The present invention has been made to solve the above problems, and an object of the present invention is not to increase the size of the opening of the ceiling material when the lighting device is installed behind the ceiling. An object of the present invention is to provide an illuminating device having a wide variable irradiation range without making the size of the mirror surface portion large, and making the mirror surface portion difficult to see from the room when installed on the ceiling, and having a preferable external appearance.

[0013]

In order to solve the above problems, the present invention provides a lamp unit for irradiating light from a light source, and a lamp unit for irradiating light from a light source. An illumination device comprising: a mirror surface portion having a rotation axis for varying a light distribution direction by varying a crossing angle with the optical axis of the irradiation light, wherein the mirror surface portion is an optical axis of the irradiation light from the lamp body portion. It is characterized in that an optical axis direction moving portion for moving in the direction is provided.

According to the second aspect of the present invention, the light distribution direction is controlled by changing the crossing angle between the lamp unit that irradiates the light from the light source and the optical axis of the light emitted from the lamp unit. And a mirror surface portion having a rotation axis for changing the axis of the illumination device, wherein an up-down direction moving portion for moving the mirror surface portion in the up-down direction is provided. Further, in the invention according to claim 3, the light distribution direction is varied by changing the crossing angle between the lamp unit that irradiates the light from the light source and the optical axis of the irradiation light from the lamp unit. A mirror surface portion having a rotation axis for moving the mirror surface portion in the optical axis direction of the irradiation light from the lamp body, and the mirror surface portion in the vertical direction. And an up-and-down direction moving portion for providing the function.

[0015]

With the above construction, in the invention according to claim 1, the optical axis direction moving portion moves the mirror surface portion back and forth in the optical axis direction of the irradiation light. When the angle between the mirror surface and the optical axis direction is small, move the mirror surface part closer to the lamp part, and when the angle between the mirror surface part and the optical axis direction of the irradiation light is large, move the mirror surface part away from the lamp part. The irradiation range can be increased.

According to the second aspect of the present invention, since the vertical movement unit moves the mirror surface portion up and down with respect to the relative positional relationship with the lamp body portion, the mirror surface portion and the optical axis direction of the irradiation light. When the angle formed by and is small, move the mirror surface downward,
When the angle between the mirror surface and the direction of the optical axis of the irradiation light is large, the mirror surface is moved upward so that the lower end of the mirror surface does not protrude below the ceiling material of the ceiling and the mirror surface is rotated. Can be made.

Further, in the invention according to claim 3, since the optical axis direction moving section moves the mirror surface portion back and forth in the optical axis direction of the irradiation light, the mirror surface portion and the optical axis direction of the irradiation light are formed. The variable irradiation range can be increased by moving the mirror surface part closer to the lamp part when the angle is small, and by moving the mirror surface part away from the lamp part when the angle formed by the mirror surface part and the optical axis direction of the irradiation light is large. Since the vertical movement unit moves the mirror surface portion up and down with respect to the relative positional relationship with the lamp body portion, the mirror surface portion is moved downward when the angle formed by the mirror surface portion and the optical axis direction of the irradiation light is small. When the angle formed by the mirror surface portion and the optical axis direction of the irradiation light is large, the mirror surface portion is moved upward so that the lower end of the mirror surface portion does not protrude downward from the ceiling material of the ceiling and the mirror surface portion is removed. It can be rotated.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. 1 to 3 and a second embodiment will be described with reference to FIGS.

[First Embodiment] FIG. 1 is a top view of a lighting device, and FIG. 2 is a side view of the lighting device. FIG. 3 is a schematic diagram illustrating the position and angle of the mirror surface portion of the lighting device.

In FIG. 1 and FIG. 2, reference numeral 1 denotes a lamp unit. The lamp body unit 1 has a light source inside and emits irradiation light.
It irradiates the mirror surface portion 2 provided in front of the.

The mirror surface portion 2 receives and reflects the irradiation light from the lamp body portion 1. The mirror surface portion 2 is supported from both sides by a mirror surface supporting portion 4 at the center of both end surfaces in the longitudinal direction, and the mirror surface supporting portion 4 rotates with respect to a bearing 5 provided on the side of the mirror surface supporting portion 4. It is designed to be flexible. Therefore, the mirror surface portion 2 is rotatable with respect to the bearing 5.
It has a first rotating shaft 6 orthogonal to the optical axis of the irradiation light.

A first rotary shaft drive unit 7 is provided on one side of the bearing 5, and the first rotary shaft drive unit 7 rotates the mirror surface unit 2 about the first rotary shaft 6 as an axis. To move.

An optical axis direction moving portion 8 is provided below each of the bearings 5. Each of the optical axis direction moving parts 8 is a guide 9
The mirror surface part 2 moves above, and the mirror surface part 2 moves in the optical axis direction.
The lamp unit 1 can be moved toward or away from the lamp unit 1 according to the movement.

The guide support arm 10 is a plate-like member that supports the guide 9. When viewed from the front, the guide support arm 10 is provided with a bottom portion and two end side portions extending upward at right angles from both ends of the bottom portion. And have a substantially U-shape.

One end of each guide 9 is a guide support arm 10.
Are fixed to both ends of the bottom portion of the base, and the guide 9 and the guide support arm 10 form a substantially U-shape when viewed in a top view. The other end of each guide 9 is supported by one end of the reinforcing member 11, and the other end of the reinforcing member 11 is connected to the guide supporting arm 1.
It is fixed to the upper side of both end sides of 0. Therefore, the guide 9, the reinforcing member 11, and the both side portions of the guide support arm 10 are
Form a substantially right triangle when viewed in side view.

An optical axis direction drive section 12 for moving the optical axis direction movement section 8 on one guide 9 is provided at one end of the guide support arm 10. The optical axis direction drive section 12 is provided.
The mirror surface portion 2 moves back and forth in the direction of the optical axis of the irradiation light by the driving.

A shaft body 13 is provided from the center point in the longitudinal direction of the guide support arm 10 in the optical axis direction of the irradiation light, and the center line of the shaft body 13 substantially coincides with the center line of the mirror surface portion 2. . The shaft body 13 is rotatably supported by the bearing 13 so as to be rotatable about the optical axis of the irradiation light. Therefore, when the shaft body 13 rotates, the mirror surface portion 2 also rotates,
The mirror surface portion 2 has a second rotating shaft 15 that coincides with the optical axis of the irradiation light.

A pulley 16 is provided at a substantially central portion of the shaft body 13, and the shaft body 13 is driven by a second rotary shaft drive unit 19 through a timing belt 17 and a pulley 18.

With the above structure, the mirror surface portion 2 has the first rotating shaft 6 which is orthogonal to the optical axis of the irradiation light and the second rotating shaft 15 which coincides with the optical axis of the irradiation light. It is possible to rotate about both axes and move the irradiation light in the optical axis direction.

Then, the optical axis direction moving portion 8 is moved in correspondence with the rotation of the first rotating shaft 6, and as shown in FIG. 3, the angle formed between the mirror surface portion 2 and the optical axis of the irradiation light is changed. When the angle is small, the mirror surface portion 2 is brought close to the lamp body portion 1, and when the angle formed by the mirror surface portion 2 and the optical axis direction of the irradiation light is large, the mirror surface portion 2 is moved away from the lamp body portion 1 to adjust the variable irradiation range. We are trying to expand.

That is, in FIG. 3, the mirror surface portion 2 is 2a.
When the angle and position are shown in, the irradiation direction is B7, and when the mirror surface portion 2 is at the angle and position shown in 2c, the irradiation direction is B.
9, the variable irradiation range is the range of angles formed by the irradiation directions B7 and B9. Even if the angle formed by the mirror surface portion 2 and the optical axis of the irradiation light is large, it is possible to irradiate the room without causing the irradiation direction B9 to hit the lamp body portion 1 or the ceiling material 3 by moving the mirror surface portion 2 away from the lamp body portion 1. Therefore, the angle formed by the irradiation directions B7 and B9 can be made larger than the angle described in the related art with reference to FIG.

Further, since the angle formed by the mirror surface portion 2 and the optical axis is small when the position is close to the lamp body portion 1, and the angle formed by the distance from the lamp body portion 1 is increased, the edge of the opening of the ceiling material 3 is increased. A space for rotating the mirror surface portion 2 is not required in the portion, and the size can be made smaller than the size of the opening portion of the ceiling material 3 described in the related art with reference to FIG.

[Second Embodiment] FIG. 4 is a top view of a lighting device. FIG. 5 is a side view of the lighting device. 6 and 7
[Fig. 4] is a schematic view for explaining the position and angle of the mirror surface portion of the lighting device. In FIGS. 4 and 5, the same parts as those in the first embodiment are designated by the same reference numerals, and detailed description of the same parts will be omitted.

The illuminating device of the second embodiment shown in FIGS. 4 and 5 is different from the illuminating device of the first embodiment in that it has the following features. That is, in the lighting device shown in FIGS. 4 and 5, the wire 20 is laid over the entire length of the mirror surface portion 2 in the longitudinal direction, and the wire 20 is provided on one side of the mirror surface support portion 4. The wire winding unit 21 corresponding to the up-down direction moving unit is configured to wind the wire, and the mirror surface supporting unit 4 movably supports the mirror surface unit 2 from both sides.

With the above structure, the wire winding portion 21
Is driven to wind the wire 20 from the lamp body 1 side to the guide support arm 10 side or from the guide support arm 10 side to the lamp body part 1 side, so that the mirror surface portion 2 follows the movement of the wire 20. To move. That is, the relationship between the movement of the wire 20 and the mirror surface portion 2 in the state where the mirror surface portion 2 is vertical will be described.
If the wire 20 is wound from above to below, the mirror surface portion 2 moves downward, and if the wire 20 is wound from below to above, the mirror surface portion 2 moves upward.

Then, the wire winding portion 21 is driven in correspondence with the rotation of the first rotation shaft 6, and the angle formed between the mirror surface portion 2 and the optical axis of the irradiation light is changed as shown in FIG. When the angle is small, the wire 20 is wound from the lamp body 1 side to the guide support arm 10 side, and when the angle formed by the mirror surface portion 2 and the optical axis of the irradiation light is large, the wire 20 is moved from the guide support arm 10 side to the lamp body. The ceiling material 3 at the lower end of the mirror surface portion 2 is configured to be wound around the portion 1 side.
Keep the height from above constant.

Further, as shown in FIG. 7, when the optical axis direction moving portion 8 is moved while the height of the lower end of the mirror surface portion 2 from the ceiling material 3 is kept constant, the opening of the ceiling material 3 becomes large. The variable irradiation range can be expanded without being limited.

[0038]

Since the illuminating device of the present invention is constructed as described above, in the invention according to claim 1, the opening of the ceiling material is not large and the size of the mirror surface is large. Therefore, it is possible to provide an illumination device having a wide variable irradiation range.

According to the second aspect of the invention, there is an effect that it is possible to provide an illuminating device that is preferable in appearance without the mirror surface portion protruding from the ceiling when installed on the ceiling.

According to the third aspect of the invention, the variable irradiation range can be widened without making the opening of the ceiling material large and the size of the mirror surface portion large, and it can be installed on the back of the ceiling. In this case, it is possible to provide an illuminating device which is preferable in appearance without the mirror surface portion protruding from the ceiling.

[Brief description of drawings]

FIG. 1 is a top view of a lighting device according to a first embodiment of the present invention.

FIG. 2 is a side view of the lighting device according to the first embodiment of the present invention.

FIG. 3 is a schematic diagram illustrating a position and an angle of a mirror surface portion of the lighting device.

FIG. 4 is a top view of a lighting device according to a second embodiment of the present invention.

FIG. 5 is a side view of a lighting device according to a second embodiment of the present invention.

FIG. 6 is a schematic diagram illustrating a position and an angle of a mirror surface portion of the lighting device.

FIG. 7 is a schematic diagram illustrating the position and angle of the mirror surface portion of the lighting device.

FIG. 8 is a schematic diagram illustrating an example of a conventional lighting device.

FIG. 9 is a schematic diagram illustrating another example of a conventional lighting device.

[Explanation of symbols]

 1 Lamp part 2 Mirror surface part 6 Rotation axis 8 Optical axis direction moving part 21 Vertical direction moving part

Claims (3)

[Claims] 1. A mirror surface having a rotating body for irradiating light from a light source and a rotating shaft for changing a light distribution direction by changing a crossing angle of an optical axis of light emitted from the light body. And an optical axis direction moving section that moves the mirror surface section in the optical axis direction of the irradiation light from the lamp body section. 2. A mirror surface having a lamp body for irradiating light from a light source and a rotating shaft for changing a light distribution direction by changing a crossing angle between an optical axis of the light emitted from the lamp body. And a vertical movement unit that moves the mirror surface portion in the vertical direction. 3. A mirror surface having a lamp body for irradiating light from a light source and a rotating shaft for changing a light distribution direction by changing a crossing angle between an optical axis of light irradiated from the lamp body. And a vertical movement unit that moves the mirror surface portion in the vertical direction, and an optical axis direction movement unit that moves the mirror surface portion in the optical axis direction of the irradiation light from the lamp body portion. A lighting device characterized by the above.