JP2595552Y2 - Vehicle interior lights - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to an interior light,
In particular, the present invention relates to improvement of interior lights for vehicles such as automobiles.

[0002]

2. Description of the Related Art Conventionally, so-called direct illuminating lamps in which a diffuse translucent plate such as an outer lens is disposed in front of a light source are often used as vehicle interior lamps.

[0003] The above-mentioned direct-illumination type interior light is disadvantageous in that it is arranged in a narrow cabin, so that the light of the super-high-brightness portion of the light source itself is directly illuminated, giving a sense of glare. Further, since the light source is disposed near the outer lens, there is also a problem that the lens surface becomes hot.

Therefore, the present inventor has previously proposed in Japanese Utility Model Application No. 4-190.
Filed No. 45 and eliminated the glare caused by the presence of the light source,
In addition, a vehicle interior light capable of obtaining substantially uniform surface light emission has been proposed.

FIGS. 8 to 11 show examples of the construction of the vehicle interior light of the prior application. In the figure, reference numeral 1 denotes a rectangular box formed of a material such as a synthetic resin, which is integrally formed with a frame 2 surrounding the outside. The front of the box-shaped body 1 is a light emitting portion 3, and a light incident portion 4 is opened on one side surface of the box. A light source 5 is provided in a frame outside the light incident portion 4. As the light source 5, an incandescent bulb, a discharge tube, an LED, or the like is used.

A diffuse reflection layer 6 is formed on the inner surface of the box-shaped body 1 except for the light emitting portion 3 and the light incident portion 4.
The diffuse reflection layer 6 is formed of a white paint, a white resin, a honing-like metallic glossy surface, or the like.

An outer lens 7 is provided on the light emitting portion 3 of the box-shaped body 1. A flat fan-shaped reflector 8 is provided between the light incident part 4 and the light source 5 of the box-shaped body 1 to introduce the light of the light source 5 from the light incident part 4 into the box-shaped body 1 as direct light and reflected light. I have. In addition, a light diffusion filter 9 is provided in the light incident section 4.

According to the interior light having the above configuration, FIGS.
As shown in FIG. 1, light from the light source 5 enters the box 1 through the reflector 8 and is reflected by the diffuse reflection layer 6 formed on the inner surface of the enclosing portion of the box 1. The light is further diffused by the lens 7 to emit uniform surface light. In this case, according to the case in which the light diffusing filter 9 is provided in the light incident portion 4 of the box-shaped body 1, the light incident on the inner surface of the box-shaped body is uniformly diffused. Can be further enhanced.

FIG. 12 shows another configuration example. Reference numeral 10 denotes a box-shaped body, and a transparent resin plate is used for the box-shaped body 10,
A diffuse reflection layer 11 is provided on the outer surface other than the light emitting portion and the light incident portion.
Are formed. The diffuse reflection layer 11 is formed by, for example, applying light diffusion coating or covering with a light diffusion reflection plate.

In the above configuration, the light guide 10 having the diffuse reflection layer 11 on the outer surface acts as a light guide plate in general and can utilize total reflection, so that the uniformity of light diffusion is increased. In the configuration of FIG. 12, even if the outer lens is omitted, uniform surface light emission can be obtained as in the example of FIG. 8, but the use of the outer lens further enhances the effect of uniform surface light emission.

[0011]

According to the configuration of the prior application described above, (1) a relatively thin configuration is possible. (2) Since the surface light is emitted uniformly, the degree of freedom in designing the outer lens is large. (3) Uniform surface light emission does not cause unpleasant glare. (4) Since the light is indirect light, heat generation on the outer lens surface is small. (5) There is a unique design effect by the uniform surface light emitting source. It is possible to obtain a vehicle interior light having the above effects.

However, since the vehicle interior lamp of the prior application does not have the dimming and toning functions, the T.V. P. Light corresponding to O was not obtained, and there is still room for improvement in this respect.

It is an object of the present invention to provide a vehicle interior light which has the effects of the above-mentioned prior application and further has dimming and toning functions.

[0014]

In order to achieve the above object, a vehicle interior lamp according to the present invention comprises a light source section having a reflector for reflecting light emitted from a light source, and a light emitting section having a diffuse reflection layer inside. A filter section rotatably provided around the light emitting section, and a filter section for guiding light from the light source section to the light emitting section, wherein the filter section has a plurality of or a filter having a gradation light control and a color control function. The gist consists of:

[0015]

In the vehicle interior lamp of the present invention, the light from the light source enters the light-emitting section via the filter section, is reflected by the diffuse reflection layer, and the reflected light is emitted as surface emission. Rotate for dimming and toning.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in the drawings will be described below.
FIG. 1 shows an embodiment of a vehicle interior light according to the present invention. In the figure, 21 is an outer housing (cover), 22 is its base, 23 is a rotary knob, 24 is an outer lens,
Reference numeral 25 denotes an annular light emitting portion of the outer housing, a diffuse reflection layer 26 is formed on a part of the inner wall surface, and a circular light guide 27 made of a transparent material is housed therein. 28 is a reflector, 29 is a light source, 30 is a ball type rotation holding unit, 3
1 is a diffusion filter, and 32 to 40 are annular rotary dimming and toning filters.

The light emitting section 25, the diffuse reflection layer 26, and the light guide 27 of the outer housing are assembled, for example, as shown in FIG. 42.

The filters 32 to 40 are formed at equal angles around the entire outer periphery of the light emitting section 25 as shown in FIG. 3, and are formed integrally with the outer lens 24, for example, and the bottom surface thereof is , So that a desired filter can be selectively used appropriately by the rotary knob 23 formed on the outer lens.

As these filters, for example, filters 32, 33, 34, 35 and 36 each have a color temperature of 2
600K, 300K, 3400K, 3800K, 420
0K color temperature filter, filters 37, 38, 3
9 and 40 have colorless transmittances of 75%, 50% and 25%, respectively.
Of the transmittance filter. As described above, each filter is of a different type, and the number thereof is free.A suitable method such as printing, painting, pasting, molding, etc. can be used as the method of producing each filter. In this case, it is possible to provide a near-step light control and color control function.

Further, these filters are provided integrally with the outer lens on the rib portion thereof, but may be provided separately or independently.

The surface light emission of the above-mentioned interior light is as shown in FIG. 4, and the light from the light source 9 is reflected by the reflector 28, and the diffusion filter 31, the light control and the color control filter 3 are used.
The light is guided to the light guide 27 through one of 2 to 40, further diffused and reflected by the diffuse reflection layer 26 as shown in the partially enlarged view A, and emitted through the outer lens 24.

In this case, the light incident on the light guide 27 is not emitted unless it is smaller than the critical angle θ, so that internal diffusion proceeds and more uniform surface light emission is obtained.

The uniformity of the outer lens 24 and the diffusion filter 31 is slightly reduced without the outer lens 24 and the diffusion filter 31. The diffuse reflection layer 26 may be provided on the light guide 27, or the light emitting section 25 may be formed of a diffuse reflection material. Further, the surface light-emitting portion does not necessarily have to be circular, and may have a polygonal shape, for example.

FIGS. 5 and 6 show another embodiment of the present invention.
This is a configuration that does not use the light guide 27, and shows only the configuration of a portion different from FIGS. In this embodiment, as shown in FIG. 7, the light transmitted through the filter undergoes only diffuse reflection at the surface emitting portion.

[0025]

According to the present invention, as described above, the following effects can be obtained while maintaining the effects of the prior application. (1) T.T. P.
Light corresponding to O is obtained. (2) It is possible to obtain an interior light having a dimming and toning function with a relatively simple, low-cost and highly reliable structure. (3) Since a filter is provided around the light emitting section, various types of filters can be used. (4) The overall configuration can be made relatively thin.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG.
FIG. 3 is a sectional view taken along line A.

FIG. 2 is a perspective view schematically showing a surface light emitting unit in the embodiment.

FIG. 3 is a plan view schematically showing an annular rotary filter in the embodiment and a side view thereof as viewed from a direction B.

FIG. 4 is an explanatory diagram of a surface light emitting function in the embodiment.

FIG. 5 is a plan view showing another embodiment of the present invention and AA.
It is a line sectional view.

FIG. 6 is a perspective view schematically showing a surface light emitting section in the embodiment of FIG. 5;

FIG. 7 is an explanatory diagram of a surface light emitting function in the embodiment of FIG.

FIG. 8 is a plan view of a vehicle interior light showing a configuration example of the prior application.

FIG. 9 is a sectional view of FIG. 8;

FIG. 10 is an explanatory diagram of a surface light emitting action of an interior light.

FIG. 11 is an explanatory diagram of diffuse reflection of a structural portion A of an interior light.

FIG. 12 is a perspective view of a box-shaped body showing another configuration example of the prior application.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Outer housing (cover) 22 Outer housing (base) 23 Rotation knob 24 Outer lens 25 Outer housing (light emitting part) 26 Diffuse reflection layer 27 Light guide 28 Reflector 29 Light source 30 Ball type rotation holder 31 Diffusion holder 32-40 Dimming, toning filter

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B60Q 3/02 F21S 1/00 F21V 9/10 G02B 6/00 331

Claims (4)

(57) [Scope of request for utility model registration] 1. A light source unit having a reflector for reflecting light emitted from a light source; a light emitting unit having a diffuse reflection layer inside; a light emitting unit provided rotatably around the light emitting unit; And a filter unit for guiding light to the light-emitting unit, wherein the filter unit comprises a filter having a plurality of or gradation dimming and toning functions. 2. A light guide having a light guide in the light emitting portion, wherein the diffuse reflection layer is formed on the light guide.
A vehicle interior light according to any one of the preceding claims. 3. The vehicle interior light according to claim 1, wherein the light from the light source unit is guided to the filter unit via a diffusion filter. 4. The vehicle interior light according to claim 2, wherein the light emitting section has an outer lens, and is configured to emit the reflected light from the diffuse reflection layer via the outer lens. .