JPS6071346A - Lighting confirmation monitor for car lighting tool - Google Patents

Abstract

PURPOSE:To prevent water or dust from entering a reflection plane section and then diffused reflection and improve reflection efficiency by forming a sealed hollow section in a lens that reflects the light source and a light reflection plane on the inner surface of this sealed hollow section. CONSTITUTION:A sealed hollow section 12 is formed in a lens 11 and a reflection plane 11a is formed on the inner surface of this hollow section 12. The light from a light source guided by using optical fiber 4 is incident on the lens 11, reflected on the reflection plane 11a, passes through a luminous surface 11b. Therefore, the light can be perceived by the eye of a driver. In this case, the water or dust 7 entered from the gap between the lens 11 and a cover 3 hardly reaches the reflection plane 11a of the lens 11.

Description

DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to an improvement in the structure of a vehicle lamp lighting confirmation monitor mounted on a vehicle to confirm lighting of the lamp installed in the vehicle.

b. Prior Art Conventionally, for example, Datsun Bluebird/? There is a description in the 7D maintenance manual (published by Nissan Automatic Co., Ltd.). The structure of this lighting confirmation monitor is as shown in FIG. That is, at the same pressure, / is a lens having a reflective surface /a and a light emitting surface /b, C is a base for supporting this lens /, 3 is a cover that covers the part of the lens / other than the light emitting surface /b, G is an original fiber (a bulb or LED may be used) for guiding the light emitted from a head rung, which is a light source (not shown), to the lens. In this structure, light from a light source guided by an optical fiber beam enters the lens /, is reflected by the reflective surface /a, and passes through the light emitting surface /b so that it can be seen by the occupant.

However, in the structure of such a conventional monitor, since the reflective surface /a of the lens / is located outside of the ultrasonic welded seal part 6, there is a gap between the lens / and the cover 3. Water or dust 7 forms from the gap between the holes. Also, the reflective surface/
When water droplets are attached to a, there is a problem in that light is transmitted through the reflective surface /a and the reflection efficiency of the reflective surface /a is reduced.

C0 Purpose of the Invention The present invention has been made by focusing on such conventional problems, and aims to prevent diffused reflection and a decrease in reflection efficiency by preventing water +%ti or dust from adhering to the reflective surface of the lens. The purpose is to prevent.

d9 Structure of the Invention In order to achieve the above object, the present invention has a structure in which light from a light source is reflected by a lens so that it can be confirmed by a passenger, a sealed cavity is formed in the lens, and a sealed cavity is formed on the inner surface of the sealed cavity. A reflective surface for the light is formed to prevent water or dust from entering the reflective surface portion.

θ, Example FIG. 2 is a diagram showing an embodiment of the present invention.

Note that parts that are the same as those of the conventional device shown in FIG.

A sealed cavity /2 is formed in the V lens l/, and a reflective surface //a is formed on the inner surface of this cavity 12. Note that //b is a light emitting surface.

With this configuration, the light from the light source guided by the optical fiber beam enters the lens /l and is reflected by the reflective surface //a,
It passes through the light emitting surface //b and can be visually recognized by the passenger. In this case, water or dust 7 that has entered through the gap between the lens // and the bracket 3 will not reach the reflective surface //a of the lens // and the bracket. This is because the reflective surface //a is formed in the sealed cavity 12, ie the reflective surface //a is covered with the tSr& member of the lens //a.

Therefore, a decrease in reflection efficiency due to diffuse reflection of light and transmission of light can be prevented.

f. Effects As explained above, according to the present invention, it is possible to prevent diffused reflection on the reflective surface of the lens and a decrease in reflection efficiency, and there is an effect that it is possible to clearly confirm that the lamp is lit.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a conventional lighting confirmation monitor, and FIG. 2 is a longitudinal sectional view of the lighting confirmation monitor of the present invention. reflective surface. 1′, −ζ−−−. Representative patent attorney Ishido, back;

Claims (1)

[Claims] A vehicle having a structure in which light from a light source is reflected by a lens so that it can be confirmed by a passenger, wherein a sealed cavity is formed in the lens, and a reflective surface for the light is formed on an inner surface of the sealed cavity. Monitor to confirm lighting of lighting equipment.