JPH0571883U - Vehicle interior light - Google Patents

Abstract

(57) [Abstract] [Purpose] An object is to provide a vehicle interior light that can obtain uniform surface emission. [Structure] The front surface of the box-shaped body 1 serves as a light emitting portion 3, one side surface serves as a light incident portion 4, and the diffuse reflection layer 6 is formed on the inner surface of the surrounding portion of the box-shaped body. Outer lens 7
To provide. A light source 5 is arranged outside the light incident part 4, and a reflector 8 for introducing the light of the light source from the light incident part into the box-shaped body 1 is provided between the light source and the light incident part. The light from the light source enters the box-shaped body 1 through the reflector 8 and is diffusely reflected by the inner surface of the box-shaped body, and the reflected light is further diffused by the outer lens 7 and emitted as uniform surface emission.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an interior light, and more particularly to improvement of an interior light for a vehicle such as an automobile.

[0002]

[Prior Art]

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

[0003]

[Problems to be solved by the device]

 The direct-lighting interior light described above has a drawback in that it is dazzled because the light of the ultra-high brightness portion of the light source itself is directly radiated because it may be placed in a narrow vehicle compartment. Also, since the light source is located near the outer lens, the lens surface may become hot.

[0004]

[The purpose of the device]

 The present invention has been made in order to solve the above problems, and its main purpose is to provide a vehicle interior light that eliminates glare due to the presence of a light source and can obtain substantially uniform surface emission. To do.

[0005]

[Means for Solving the Problems]

 A vehicle interior light according to a first aspect of the present invention has a front surface as a light emitting portion, one side surface as a light incident portion, and an inner surface of a surrounding portion excluding the light emitting portion and the light incident portion as a diffuse reflection layer. Box-shaped body, an outer lens provided in the light-exiting portion of the box-shaped body, a light source arranged outside the light-incident portion of the box-shaped body, and It is characterized by consisting of a reflector to be introduced into the body. According to a second aspect of the present invention, a vehicle interior light has a front surface as a light emitting portion, one side surface as a light emitting portion, and a light guide portion having a diffuse reflection layer on an outer surface excluding the light emitting portion and the light incident portion. It is characterized by comprising an optical body, a light source arranged outside the light incident part of the light guide, and a reflector for introducing the light of the light source into the light guide from the light incident part.

[0006]

[Action]

 In the vehicle interior light according to the first invention, the light from the light source enters the box-shaped body through the reflector and is reflected by the diffuse reflection layer on the inner surface of the box-shaped body, and the reflected light passes through the outer lens in front. , Uniform surface emission is emitted. In the vehicle interior light according to the second invention, the light from the light source enters the light guide body having the diffuse reflection layer on the outer side surface through the reflector, and is emitted as uniform surface emission from the light emitting portion.

[0007]

【Example】

 1 to 4 show an embodiment according to the first invention. In the figure, reference numeral 1 denotes a rectangular box-shaped body made of a material such as synthetic resin, which is integrally formed with a frame 2 surrounding the outside thereof. The front surface of the box-shaped body 1 serves as a light emitting portion 3, a light incident portion 4 is formed on one side surface of the box, and a light source 5 is provided inside the 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 surrounding portion of the box-shaped body 1 excluding 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 metal luster surface, or the like.

An outer lens 7 is provided on the light emitting portion 3 of the box-shaped body 1. Between the light incident part 4 of the box-shaped body 1 and the light source 5, there is provided a planar fan-shaped reflector 8 for introducing the light of the light source 5 from the light incident part 4 directly into the box-shaped body 1 as reflected light. ing. A light diffusing filter 9 is arranged in the light incident section 4.

According to the interior lamp having the above-described structure, as shown in FIGS. The light is reflected by the diffuse reflection layer 6 formed, and the reflected light is further diffused by the outer lens 7 and emitted as uniform surface emission. In this case, according to the box-shaped body 1 provided with the light diffusion filter 9 on the light-incident part 4, the light incident on the inner surface of the box-shaped body is uniformly diffused. It will be further enhanced.

FIG. 5 shows an embodiment of the second invention. Reference numeral 10 is a box-shaped body, and a transparent resin plate is used for the box-shaped body 10, and a diffuse reflection layer 11 is formed on the outer surface other than the light emitting portion and the light incident portion. The diffuse reflection layer 11 is formed, for example, by applying light diffusion coating or by covering with a light diffusion reflection plate.

In the above-described embodiment, the light guide body 10 having the diffuse reflection layer 11 on the outer surface functions as a light guide plate in general, and since total reflection can be used, the light diffusion uniformity is increased. In the configuration of the second invention, even if the outer lens is omitted, it is possible to obtain the uniform surface emission as in the first invention. However, if the outer lens is used, the effect of the uniform surface emission is further enhanced.

[0013]

[Effect of the device]

 As described above, according to the present invention, the following effects can be obtained. (1) A relatively thin structure is possible. (2) Since the surface light emission is uniform, the degree of freedom in designing the outer lens is large. (3) The uniform surface emission does not cause unpleasant dazzling. (4) Since it is indirect light, the outer lens surface does not generate much heat. (5) The uniform surface emission source has a unique design effect.

[Brief description of drawings]

FIG. 1 is a plan view of a vehicle interior light showing an embodiment of the first invention.

FIG. 2 is a cross-sectional view of FIG.

FIG. 3 is an explanatory diagram of a surface emitting action of an interior light.

FIG. 4 is an explanatory diagram of diffuse reflection of a structural portion A of an interior light.

FIG. 5 is a perspective view of a box-shaped body showing an embodiment of the second invention.

[Explanation of symbols]

 1 Box-shaped body 2 Frame 3 Light emitting part 4 Light incident part 5 Light source 6 Diffuse reflection layer 7 Outer lens 8 Reflector 9 Diffuse filter 10 Transparent light guide 11 Diffuse reflection layer

Claims (2)

[Scope of utility model registration request] 1. A box-shaped body, wherein the front surface serves as a light emitting portion, one side surface serves as a light incident portion, and the inner surface of a surrounding portion excluding the light emitting portion and the light incident portion has a diffuse reflection layer, and the box-shaped body. An outer lens provided in the light emitting part, a light source arranged outside the light incident part of the box-shaped body, and a reflector for introducing the light of the light source into the box-shaped body from the light incident part. Interior light for vehicles. 2. A light guide body having a front surface as a light emitting portion, one side surface as a light incident portion, and a diffuse reflection layer on an outer side surface excluding the light emitting portion and the light incident portion, and light of the light guide body. An interior lamp for a vehicle, comprising: a light source arranged outside an incident part; and a reflector for introducing the light of the light source into the light guide from the light incident part.