JP2010143345A - Indoor lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor lighting device capable of enhancing dramatic effect by indoor lighting. <P>SOLUTION: The device 1 includes: a light source (light emission diode 2); a body 3 mounted to a ceiling part 6 and surrounding the light source; and a lifting member (cover member 4) liftably provided relative to the body and having a reflection part 16 for reflecting a light beam from the light source. A lower light transmission part 19 is provided on the lifting member, and a side light transmission part 22 is provided on the lifting member or the body. By lifting operation of the lifting member, it can be switched to the first lighting state P that the lower light transmission part is released and the side light transmission part is closed by the reflection part and to the second lighting state Q that the lower light transmission part is closed and the side opening part is released by the reflection part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an indoor lighting device, and more particularly to an indoor lighting device that can enhance the effect of rendering by indoor lighting.

2. Description of the Related Art Conventionally, in an automobile or the like, an indoor lamp is generally installed on the ceiling for the purpose of illumination in the passenger compartment at night. Recently, however, there is an increasing demand for interior lighting that is not only intended for illumination in the passenger compartment but also for improving the atmosphere in the passenger compartment.
Here, what can perform various illumination is known as a conventional room light (for example, refer patent documents 1 and 2).
The above-mentioned Patent Document 1 includes one light source and a rotating shade that shields the light beam of the light source, and shields or unshields the light beam of the light source by a rotating operation of the rotating shade. An interior lamp that can switch between overall illumination (direct illumination) and spot illumination (direct illumination) is disclosed.
Further, Patent Document 2 includes a single light source and a rotatable disc cover that covers the light source, and the disc cover is provided with several types of lens cut portions. An interior light that can switch between overall illumination (direct illumination) and spot illumination (direct illumination) in the vehicle interior by an operation is disclosed.
However, in the above Patent Documents 1 and 2, since a plurality of illumination patterns can be switched only by direct illumination, there is a problem that the effect of producing light for improving the atmosphere in the passenger compartment is insufficient.

Moreover, what is comprised as a conventional room light so that the light beam of a light source may be reflected toward the front of a lamp with a reflector is known (for example, refer patent document 3).
However, since the above-mentioned Patent Document 3 can be illuminated only by direct illumination, there is still a problem that the effect of producing light for improving the atmosphere in the passenger compartment is insufficient.

JP 52-69137 A JP 2002-347513 A JP 2004-182071 A

  This invention is made | formed in view of the said present condition, and aims at providing the indoor lighting apparatus which can improve the production effect by indoor lighting.

The present invention is as follows.
1. A light source;
A body attached to the ceiling and surrounding the light source;
An elevating member that is provided so as to be movable up and down with respect to the main body and has a reflecting portion that reflects a light beam from the light source;
The elevating member is provided with a lower translucent part, and the elevating member or the main body is provided with a side translucent part,
By the raising / lowering operation of the elevating member, the lower light transmitting portion is opened by the reflecting portion and the side light transmitting portion is blocked, and the lower light transmitting portion is blocked by the reflecting portion. And the interior lighting apparatus characterized by being able to switch between the 2nd lighting states by which the said side opening part is open | released.
2. The reflection unit is configured to reflect the light beam from the light source toward the side,
The lateral translucent part is provided on the lifting member,
In the first illumination state, a light beam from the light source passes through the lower light transmitting part,
In the second illumination state, the light from the light source reflected toward the side by the reflecting portion passes through the side light transmitting portion. The interior lighting device described.
3. The light source is disposed above the ceiling surface in the above 2. The interior lighting device described.
4). The reflection portion is configured to reflect the light beam from the light source downward.
The lateral translucent part is provided in the main body,
In the first illumination state, a light beam from the light source reflected downward by the reflecting portion passes through the lower light transmitting portion,
In the second illumination state, the light from the light source passes through the side light transmitting part. The interior lighting device described.
5). The lower translucent part is provided with a lens cut part for changing the direction of light rays from the light source. To 4. The indoor lighting device according to any one of the above.
6). A plurality of the lateral translucent parts are provided in the above 1. To 5. The indoor lighting device according to any one of the above.
7). The light source has directivity as described above. To 6. The indoor lighting device according to any one of the above.
8). The number of the light sources is one. To 7. The indoor lighting device according to any one of the above.
9. The interior lighting device is for vehicles. To 8. The indoor lighting device according to any one of the above.

According to the indoor lighting device of the present invention, the lower light-transmitting portion is opened by the reflecting portion by the first lighting state in which the lower light-transmitting portion is opened by the reflecting portion and the side light-transmitting portion is blocked by the lifting operation of the lifting member. It is switched to the second illumination state in which the side opening is closed and the side opening is opened. In the first illumination state, the light beam from the light source does not leak to the side via the side light-transmitting part in the blocked state, but is reflected directly or by the reflecting part and is transmitted in the lower light state in the open state. Directing the interior of the room is performed through the part and downward. On the other hand, in the second illumination state, the light from the light source does not leak downward through the lower light-transmitting portion in the blocked state, but is reflected by the reflecting portion or directly opened in the side light-transmitting portion. The light passes through and is directed to the side, and the light beam is reflected by the ceiling surface, so that indirect illumination is performed. Thus, since the 1st illumination state which is indoor direct illumination and the 2nd illumination state which is indirect illumination of a ceiling surface can be switched, the presentation effect by indoor illumination can be heightened.
Further, the reflecting portion is configured to reflect a light beam from the light source toward a side, the side light transmitting portion is provided in the lifting member, and in the first illumination state The light beam from the light source passes through the lower light transmitting part, and in the second illumination state, the light beam from the light source reflected toward the side by the reflecting part passes through the side light transmitting part. In this case, in the first illumination state, the light beam from the light source directly passes through the lower light-transmitting portion in the open state and travels downward, so that the room is directly illuminated. On the other hand, in the second illumination state, the light beam from the light source is reflected by the reflection unit, passes through the side light transmission unit in the open state, travels to the side, and the light beam is reflected by the ceiling surface to perform indirect illumination. Is called.
In addition, when the light source is disposed above the ceiling surface, the amount of protrusion of the lighting device from the ceiling surface to the lower side can be reduced, and the appearance can be enhanced.
Further, the reflection unit is configured to reflect the light beam from the light source downward, the side light transmission unit is provided in the main body, and in the first illumination state, When the light beam from the light source reflected downward by the reflection unit transmits the lower light transmission unit, and in the second illumination state, the light beam from the light source transmits the side light transmission unit, In the first illumination state, the light beam from the light source is reflected by the reflection unit, passes through the lower light transmission unit in the open state, and travels downward, so that the room is directly illuminated. On the other hand, in the second illumination state, the light from the light source directly passes through the open side transmissive part and travels sideways, and the light is reflected by the ceiling surface to perform indirect illumination.
In addition, when the lower light transmitting portion is provided with a lens cut portion that changes the direction of the light beam from the light source, in the first illumination state, the indoor direct illumination with an appropriate directionality can be obtained. .
Moreover, when the said side translucent part is provided with two or more, indirect illumination with arbitrary patterns can be produced in a 2nd illumination state.
In addition, when the light source has directivity, the reflection direction at the reflecting portion can be accurately controlled. Therefore, more appropriate direct illumination and indirect illumination can be performed.
Moreover, when the said light source is one, size reduction of an illuminating device is attained.
Furthermore, when the indoor lighting device is for a vehicle, the vehicle interior ceiling can be effectively illuminated.

1. Interior lighting device Embodiment 1 The indoor lighting device according to the present invention includes a light source, a main body, and an elevating member described below. In addition, although the use etc. of the said indoor lighting apparatus are not ask | required in particular, it is preferable for vehicles, such as a motor vehicle.

  As long as the “light source” emits light, its configuration, shape, size, number, installation form, etc. are not particularly limited. Examples of the light source include a light emitting diode, a bulb such as an incandescent bulb, a fluorescent lamp, and an electroluminescent light. This light source can have directivity, for example. Moreover, the number of light sources can be one, for example.

As long as the “main body” is attached to the ceiling and surrounds the light source, the configuration, shape, size, material, installation form, etc. are not particularly limited. As this ceiling part, a ceiling material, a vehicle body, etc. can be mentioned, for example.
For example, the light source may be attached to the main body. Thereby, the main body with which the light source was integrated can be attached to a ceiling part, and the attachment property of the illuminating device with respect to a ceiling part can be improved.

  As long as the “elevating member” is provided so as to be movable up and down with respect to the main body and has a reflection part that reflects light from the light source, its configuration, shape, size, material, installation form, elevating form, etc. are not particularly limited. Absent. For example, the elevating member can be configured to surround the light source in cooperation with the main body. Moreover, the said reflection part can provide a reflection layer on the surface of a raising / lowering member, for example. This reflective layer can be formed, for example, by plating or by film sticking.

Embodiment 1 above. In the indoor lighting device, the elevating member is provided with a lower light transmitting portion, and the elevating member or the main body is provided with a side light transmitting portion.
As long as the light from the light source directly reflected by the light source or the light from the light source reflected by the reflecting part is transmitted and the light is directed downward, the lower light transmitting part has a configuration, shape, size, number, and installation form. Etc. are not particularly limited. For example, a lens cut portion that changes the direction of the light beam from the light source can be provided in the lower light transmitting portion. The illumination pattern, shape, size, number, installation form, etc. of this lens cut part are not particularly limited.
As long as the light from the light source reflected by the reflecting part or the light from the direct light source is transmitted and the light is directed to the side, the side light transmitting part has its configuration, shape, size, number, The installation form is not particularly limited. For example, a plurality of side light transmitting portions can be provided. In this case, all of the plurality of side light transmitting portions may have the same shape or different shapes, or a plurality of sets of the plurality of side light transmitting portions may have different shapes.

Embodiment 1 above. In the indoor lighting device, the lower light-transmitting portion is blocked by the reflecting portion and the first lighting state in which the lower light-transmitting portion is opened by the reflecting portion and the side light-transmitting portion is blocked by the lifting operation of the lifting member. In addition, the second illumination state in which the side opening is opened can be switched.
In this case, for example, by a lifting operation of the lifting member, in the first illumination state, a space where the light source and the lower light transmitting part are communicated with each other in the main body and a space where the side light transmitting part exists in the main body. In the second illumination state, the space where the light source and the lateral light transmitting part are communicated with the space where the lower light transmitting part exists can be partitioned in the main body.

Here, the first embodiment. Examples of the indoor lighting device include (1) and (2) modes described below.
(1) The reflection unit is configured to reflect the light beam from the light source toward the side, and the side light transmission unit is provided on the elevating member. In the second illumination state, the light beam from the light source reflected toward the side by the reflection unit is transmitted through the side light transmission unit (for example, FIGS. 3 and 4). reference).
(2) The reflection unit is configured to reflect the light beam from the light source downward, and the side light transmission unit is provided in the main body. In the first illumination state, the reflection unit is downward. The light beam reflected from the light source is transmitted through the lower light transmitting part, and in the second illumination state, the light beam from the light source is transmitted through the side light transmitting part (see, for example, FIGS. 8 and 9).

In the form (1), for example, the light source can be arranged above the ceiling surface.
In the form (1), for example, the elevating member is provided with a lower light transmitting portion at a portion intersecting the direction of the light beam of the light source in a state where the elevating member is located at the ascending end. A side light transmitting portion may be provided at a portion that intersects the direction of the light beam of the light source reflected by the reflecting portion in a state where the member is located at the descending end.
In the above (2) mode, for example, the elevating member is provided with a lower translucent portion at a portion that intersects the direction of the light beam of the light source reflected by the reflecting portion in a state where the elevating member is located at the ascending end. In addition, the main body may be provided with a side light transmitting portion at a portion that intersects the direction of the light beam of the light source in a state where the elevating member is located at the lower end.

  Hereinafter, the present invention will be described in detail with reference to the first and second embodiments with reference to the drawings. In the first and second embodiments, as an “interior lighting device” according to the present invention, an indoor lighting device for an automobile is illustrated.

[Example 1]
(1) Configuration of Indoor Lighting Device As shown in FIGS. 1 and 2, the indoor lighting device 1 according to the present embodiment is mounted on the side closer to the windshield F of the ceiling surface C in the interior of the automobile. As shown in FIGS. 3 and 4, the indoor lighting device 1 includes one light emitting diode 2 (illustrated as a “light source” according to the present invention), a main body 3, and a cover member 4 (“elevating member according to the present invention”). As an example.).

  The main body 3 is formed in a rectangular tube shape that is open in the vertical direction. The main body 3 surrounds the light emitting diode 2 in cooperation with the cover member 4. In addition, a locking portion 7 that locks to an end portion of the ceiling material 6b of the vehicle body 6a and the ceiling material 6b constituting the ceiling portion 6 is provided on the upper portion of the main body 3. Further, a tongue-shaped attachment portion 8 extending obliquely downward is provided inside the main body 3. The light emitting diode 2 is attached to the attachment portion 8 so that the light beam is directed obliquely downward and rearward of the vehicle. The light emitting diode 2 is disposed above the ceiling surface C.

  The cover member 4 is formed in a square box shape with the top opened. An elevating mechanism 5 is provided between the cover member 4 and the main body 3, and the elevating mechanism 5 allows the cover member 4 to be moved up and down with respect to the main body 3. As shown in FIG. 6, the lifting mechanism 5 includes a plurality of ridges 9 provided on the inner surfaces of the left and right side walls of the main body 3 and extending in the vertical direction, and the ridges 9 provided on the outer surfaces of the left and right side walls of the cover member 4. A plurality of guide rails 13 for guiding are provided. The elevating mechanism 5 is provided on the inner surfaces of the left and right side walls of the main body 3 and pivotally supports the upper end of the crank piece 10, and the lower end of the crank piece 10 is provided on the outer surface of the left and right side walls of the cover member 4. And a known heart-shaped cam groove 14 into which is inserted. Then, as shown in FIG. 7, the lower end portion of the crank piece 10 is locked to the lower locking portion 14a of the cam groove 14 by the weight of the cover member 4 by raising and lowering the cover member 4 (the solid line in FIG. 7). And the cover member 4 is positioned with respect to the main body 3 (see FIG. 3). On the other hand, when the lower end portion of the crank piece 10 is locked to the upper locking portion 14b of the cam groove 14 by the dead weight of the cover member 4 (shown by an imaginary line in FIG. 7), the cover member 4 is attached to the main body 3. It is positioned so as to be positioned at the descending end (see FIG. 4).

  As shown in FIGS. 3 and 4, a reflecting plate 16 (illustrated as a “reflecting portion” according to the present invention) extending obliquely upward in the main body 3 is attached to the bottom wall of the cover member 4. . On the upper surface of the reflecting plate 16, a reflecting layer 16a (for example, a plating layer) that reflects light rays from the light emitting diode 2 heading obliquely downward is provided. The reflective layer 16 a has a reflective surface that is slightly inclined with respect to the direction of the light emitting diode 2.

  On the bottom wall of the cover member 4, a lower light-transmitting portion 19 having an elliptical hole shape is formed at a portion that intersects the direction of the light emitting diode 2 in a state where the cover member 4 is located at the rising end (see FIG. 3). Has been. Further, a lens 20 made of a translucent resin is attached to the bottom wall of the cover member 4 so as to cover the lower light transmitting portion 19. A lens cut portion 21 is formed on the inner surface of the lens 20. The lens cut portion 21 has an illumination pattern that refracts light rays of the light-emitting diode 2 heading obliquely rearward toward the front of the vehicle (see FIG. 5). Further, a circular hole is formed on the rear side wall of the cover member 4 at a portion that intersects the direction of the light emitting diode 2 reflected by the reflecting plate 16 in a state where the cover member 4 is positioned at the lower end (see FIG. 4). A plurality of side translucent portions 22 are formed (see FIG. 6).

Here, in the indoor lighting device 1 of the present embodiment, the lower light-transmitting portion 19 is opened by the reflecting plate 16 and the side light-transmitting portion 22 is blocked by the raising / lowering operation of the cover member 4. 3) and the second illumination state Q (see FIG. 4) in which the lower light-transmitting portion 19 is blocked by the reflector 16 and the side opening 22 is opened can be switched. Yes. That is, in the first illumination state P, the reflector 16 partitions the space PS1 in which the light emitting diode 2 and the lower light-transmitting portion 19 are communicated with the space PS2 in which the side light-transmitting portion 22 is present in the main body 3. It is done. On the other hand, in the second illumination state Q, in the main body 3, the space QS1 where the light emitting diode 2 and the side light transmitting portion 22 are communicated with the space QS2 where the lower light transmitting portion 19 exists is partitioned. .
In the state where the cover member 4 is raised (see FIG. 3), the side light transmitting portion 22 is blocked by the side wall of the main body 3.

(2) Operation of the interior illumination device Next, the operation of the interior illumination device 1 having the above configuration will be described.
When the cover member 4 is moved up and down to the first lighting state P, as shown in FIG. 3, the lower light-transmitting portion 19 is opened and the side light-transmitting portions 22 are blocked by the reflecting plate 16. Then, the light beam from the light emitting diode 2 does not leak to the side via the side light transmitting part 22 in the blocked state, but directly passes through the lower light transmitting part 19 in the open state, and the lens of the lens 20. The cut portion 21 refracts forward of the vehicle and travels obliquely downward, and direct indoor lighting is performed.

  On the other hand, when the cover member 4 is moved up and down to enter the second illumination state Q, as shown in FIG. 4, the lower light-transmitting portion 19 is blocked and the side opening portion 22 is opened. Then, the light beam from the light emitting diode 2 does not leak downward through the closed lower light transmitting portion 19 but is reflected by the reflective layer 16a of the reflecting plate 16 and passes through the open side light transmitting portion 22. The light is transmitted to the side and the light is reflected by the ceiling surface C, so that indirect illumination is performed. In this indirect illumination, a crown-shaped illumination pattern is produced on the ceiling surface C by the light rays from the plurality of side translucent portions 22.

(3) Effects of the Embodiment As described above, according to the indoor lighting device 1 of the present embodiment, the reflector 16 is configured to reflect the light beam from the light emitting diode 2 toward the side, and the side light transmitting portion. 22 is provided on the cover member 4, and the first lighting state P in which the lower light-transmitting portion 19 is opened by the reflecting plate 16 and the side light-transmitting portion 22 is blocked by the raising / lowering operation of the cover member 4, and the reflecting plate 16 Since it is possible to switch to the second illumination state Q in which the lower translucent part 19 is blocked and the side opening 22 is opened, in the first illumination state P, the light beam from the light emitting diode 2 is blocked. Without leaking to the side through the side light-transmitting part 22 in the closed state, the light directly passes through the lower light-transmitting part 19 in the open state and travels downward, and direct indoor lighting is performed. On the other hand, in the second illumination state Q, the light beam from the light emitting diode 2 does not leak downward through the lower light transmitting portion 19 in the closed state, but is reflected by the reflecting plate 16 and is opened in the side light transmitting state. The light passes through the portion 22 and travels to the side, and the light is reflected by the ceiling surface C, so that indirect illumination is performed. Thus, since the 1st illumination state P which is direct indoor illumination and the 2nd illumination state Q which is indirect illumination of a ceiling surface can be switched, the presentation effect by indoor illumination can be heightened. Furthermore, the lighting device 1 can be reduced in size by making the elevation distance of the cover member 4 the minimum necessary.

  Further, in the present embodiment, the light emitting diode 2 is disposed so as to be positioned above the ceiling surface C, so that the amount of protrusion of the lighting device 1 from the ceiling surface C to the lower side can be reduced, and the appearance can be enhanced.

  In the present embodiment, since the lower light transmitting portion 19 is provided with the lens cut portion 21 that changes the direction of the light beam from the light emitting diode 2, in the first illumination state, the indoor direct illumination with an appropriate directionality can be achieved. can do.

  In the present embodiment, since the plurality of side light transmitting portions 22 are provided, indirect illumination with an arbitrary pattern can be produced in the second illumination state.

  In this embodiment, since the light emitting diode 2 having directivity is used as the light source, the reflection direction on the reflection plate 16 can be accurately controlled. Therefore, more appropriate direct illumination and indirect illumination can be performed.

  In this embodiment, since the number of the light emitting diodes 2 is one, the lighting device 1 can be downsized.

  In the present embodiment, since the light emitting diode 2 is attached to the main body 3, the main body 4 in which the light emitting diode 2 is integrated can be attached to the ceiling portion 6. Can be increased.

  Furthermore, in the present embodiment, since the interior lighting device 1 is for a vehicle, the interior ceiling of the vehicle can be effectively illuminated.

[Example 2]
Next, an interior lighting device according to Example 2 will be described. In the second embodiment, the same components as those in the indoor lighting device of the first embodiment are denoted by the same reference numerals and detailed description thereof is omitted, and the differences will be described in detail below.

  As shown in FIGS. 8 and 9, the indoor lighting layer 31 according to the present embodiment includes one light emitting diode 32 (illustrated as a “light source” according to the present invention), a main body 33, and a cover member 34 (according to the present invention). This “elevating member” is exemplified).

  The main body 33 is formed in a rectangular tube shape that is open in the vertical direction. The main body 33 surrounds the light emitting diode 32 in cooperation with the cover member 34. Further, on the upper portion of the main body 33, a locking portion 7 that locks to an end portion of the ceiling material 6 b of the vehicle body 6 a and the ceiling material 6 b constituting the ceiling portion 6 is provided. Further, a tongue-shaped attachment portion 35 extending horizontally is provided inside the main body 33. A light emitting diode 32 is attached to the attachment portion 35 so that the light beam is directed to the side of the vehicle. In addition, a plurality of lateral translucent portions 36 are formed on the side wall of the main body 33 on the rear side of the vehicle at a portion that intersects the directing direction of the light emitting diode 32 in a state where the cover member 34 is positioned at the lower end (see FIG. 9). ing.

  The cover member 34 is formed in a square box shape with the top opened. The cover member 34 is provided in the main body 33 so as to be lifted and lowered by the lift mechanism 5 similar to that of the first embodiment. On the bottom wall of the cover member 34, a reflection plate 37 (illustrated as a “reflecting portion” according to the present invention) extending obliquely upward in the main body 33 is provided. On the lower surface of the reflection plate 37, a reflection layer 37a (for example, a plating layer) is provided that reflects light rays from the light emitting diodes 2 directed sideways obliquely downward. The reflective layer 37 a has a reflective surface that is inclined with respect to the direction of orientation of the light emitting diode 32.

  On the bottom wall of the cover member 34, an oblong hole-like shape is formed at a portion that intersects the directivity direction of the light emitting diode 32 reflected by the reflection plate 37 in a state where the cover member 34 is located at the rising end (see FIG. 8). A lower light transmitting portion 38 is formed.

  Here, in the indoor lighting device 31 of the present embodiment, the lower light-transmitting portion 38 is opened by the reflecting plate 37 and the side light-transmitting portion 36 is blocked by the raising / lowering operation of the cover member 34. 8) and the second illumination state Q (see FIG. 9) in which the lower light transmitting portion 38 is blocked by the reflecting plate 37 and the side opening 36 is opened can be switched. Yes. That is, in the first illumination state P, the reflector 37 partitions the space PS1 in which the light emitting diode 32 and the lower light transmitting part 38 are communicated with the space PS2 in which the side light transmitting part 36 exists in the main body 33. It is done. On the other hand, in the second illumination state Q, in the main body 33, the space QS1 where the light emitting diode 32 and the side light transmission part 36 are communicated with the space QS2 where the lower light transmission part 38 exists is partitioned. Yes.

(2) Operation of the interior illumination device Next, the operation of the interior illumination device 31 having the above configuration will be described.
When the cover member 34 is moved up and down to the first illumination state P, as shown in FIG. 8, the lower light transmitting portion 38 is opened and the side light transmitting portion 36 is blocked by the reflecting plate 37. Then, the light beam from the light emitting diode 32 does not leak to the side via the side light transmitting part 36 in the blocked state, is reflected by the reflecting plate 37 and passes through the lower light transmitting part 38 in the open state. Directly in the room, it goes diagonally below the rear of the vehicle.

  On the other hand, when the cover member 34 is moved up and down to enter the second illumination state Q, as shown in FIG. 9, the lower light transmitting portion 38 is blocked and the side opening 36 is opened. Then, the light beam from the light emitting diode 32 does not leak downward through the closed lower transparent portion 38, and directly passes through the open side transparent portion 36 to the side, The light is reflected by the ceiling surface C, and indirect illumination is performed. In this indirect illumination, a crown-shaped illumination pattern is produced on the ceiling surface C by the light rays from the plurality of lateral translucent portions 36.

(3) Effect of Example As described above, according to the indoor lighting device 31 of the present example, while exhibiting substantially the same operation and effect as the indoor lighting device 1 of Example 1, the reflecting portion 37 is provided from the light emitting diode 32. It is configured to reflect the light beam downward, and the side light transmitting portion 36 is provided in the main body 33, and the lower light transmitting portion 38 is opened by the reflecting plate 37 by the raising and lowering operation of the cover member 34, and the side light transmitting is performed. It is possible to switch between the first illumination state P in which the portion 36 is blocked and the second illumination state Q in which the lower light transmitting portion 38 is blocked by the reflector 37 and the side opening 36 is opened. In one illumination state P, the light beam from the light emitting diode 32 does not leak to the side through the side light transmitting portion 36 in the blocked state, but is reflected by the reflecting plate 37 and opened in the lower light transmitting portion 38 in the open state. Directly in the room, the light passes through and passes downward. On the other hand, in the second illumination state Q, the light beam from the light emitting diode 32 does not leak downward through the closed light-transmitting portion 38 and directly passes through the open side light-transmitting portion 36. Then, the light beam is reflected from the ceiling surface C, and indirect illumination is performed. Thus, since the 1st lighting state P which is direct indoor lighting, and the 2nd lighting state Q which is indirect lighting of the ceiling surface C can be switched, the presentation effect by indoor lighting can be heightened. Furthermore, the lighting device 1 can be reduced in size by making the elevation distance of the cover member 34 the minimum necessary.

  In the present invention, the present invention is not limited to the first and second embodiments, and various modifications can be made within the scope of the present invention depending on the purpose and application. That is, in the first and second embodiments, two types of illumination states having different first and second illumination states P and Q are switched. However, the present invention is not limited to this, and for example, three or more different illumination states are selected. You may make it switch.

  Further, in the first and second embodiments, the circular hole-shaped side light-transmitting portions 22 and 36 are exemplified, but the present invention is not limited to this. For example, as shown in FIG. It is good also as the side translucent part 40 formed in the shape, star shape, heart shape etc.).

  Moreover, in the said Example 1 and 2, although the form which made all the some side translucent parts 22 and 36 the same shape was illustrated, it is not limited to this, For example, as shown in FIG. All of the lateral translucent portions 40 may have different shapes. Moreover, it is good also as a shape which divides a some side translucent part into a plurality of groups, and differs in those groups.

  In the first and second embodiments, the cover member 4, 34 is provided with the lens 20 that covers the lower light-transmitting portions 19, 38. However, the present invention is not limited to this. You may make it provide the translucent film which covers the optical parts 19 and 38. FIG. Thereby, the internal structure of a main body can be hidden with a translucent film, and appearance can be improved. This translucent film can consist of a half mirror, for example.

  Moreover, in the said Example 1 and 2, although the planar rectangular form was illustrated as the room illuminating devices 1 and 31, it is not limited to this, For example, it is good also as room illuminating devices, such as a plane circle, an ellipse, and an irregular shape.

  Furthermore, in the said Example 1 and 2, although the room illuminating devices 1 and 31 arrange | positioned near the windshield F of the ceiling surface C of a vehicle were illustrated, it is not limited to this, For example, the ceiling surface C of a vehicle It is good also as an indoor lighting apparatus arrange | positioned in a substantially center part.

  Widely used as a technology to enhance the production effect and illuminate the room. In particular, it is suitably used as a technique for illuminating the interior of a vehicle.

It is a perspective view which shows the state which attached the indoor lighting apparatus which concerns on Example 1 to the ceiling surface of the vehicle. It is a principal part expansion perspective view of FIG. It is AA sectional view taken on the line of FIG. 2, and shows the 1st lighting state of the said interior lighting apparatus. It is AA sectional view taken on the line of FIG. 2, and shows the 2nd lighting state of the said interior lighting apparatus. It is a principal part enlarged view of FIG. It is explanatory drawing for demonstrating the raising / lowering mechanism of the said interior lighting apparatus. It is explanatory drawing for demonstrating the raising / lowering mechanism of the said interior lighting apparatus. It is a longitudinal cross-sectional view which shows the 1st lighting state of the room illuminating device which concerns on Example 2. FIG. It is a longitudinal cross-sectional view which shows the 2nd lighting state of the said indoor lighting apparatus. It is explanatory drawing for demonstrating the other form of a side translucent part.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1,31; Interior illuminating device, 2,32; Light-emitting diode, 3,33; Main body, 4,34; Cover member, 6: Ceiling part, 16,37; Reflector plate, 19,38; ; Lens cut part, 22, 36; side translucent part, C; ceiling surface, P: first illumination state, Q: second illumination state.

Claims (9)

A light source;
A body attached to the ceiling and surrounding the light source;
An elevating member that is provided so as to be movable up and down with respect to the main body and has a reflecting portion that reflects a light beam from the light source;
The elevating member is provided with a lower translucent part, and the elevating member or the main body is provided with a side translucent part,
By the raising / lowering operation of the elevating member, the lower light transmitting portion is opened by the reflecting portion and the side light transmitting portion is blocked, and the lower light transmitting portion is blocked by the reflecting portion. And the interior lighting apparatus characterized by being able to switch between the 2nd lighting states by which the said side opening part is open | released. The reflection unit is configured to reflect the light beam from the light source toward the side,
The lateral translucent part is provided on the lifting member,
In the first illumination state, a light beam from the light source passes through the lower light transmitting part,
The indoor lighting device according to claim 1, wherein in the second illumination state, a light beam from the light source reflected toward the side by the reflecting portion passes through the side light transmitting portion.   The indoor lighting device according to claim 2, wherein the light source is disposed above the ceiling surface. The reflection portion is configured to reflect the light beam from the light source downward.
The lateral translucent part is provided in the main body,
In the first illumination state, a light beam from the light source reflected downward by the reflecting portion passes through the lower light transmitting portion,
The indoor lighting device according to claim 1, wherein in the second illumination state, a light beam from the light source passes through the side light transmitting portion.   The interior lighting device according to any one of claims 1 to 4, wherein the lower light transmitting portion is provided with a lens cut portion that changes a direction of a light beam from the light source.   The indoor lighting device according to any one of claims 1 to 5, wherein a plurality of the side light transmitting portions are provided.   The room lighting device according to any one of claims 1 to 6, wherein the light source has directivity.   The room lighting device according to claim 1, wherein the number of the light sources is one.   The indoor lighting device according to any one of claims 1 to 8, wherein the indoor lighting device is for a vehicle.

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