JPH074724Y2 - Automotive lighting - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automobile illumination lamp used for a head lamp, a fog lamp and the like which use a transparent and uncut lens.

[0002]

2. Description of the Related Art In a conventional automobile illuminating lamp, a transparent polycarbonate resin lens a is used, and an inner lens b and a multi-reflector c are built in as shown in FIG.
In addition, f is a valve.

[0003]

However, in the above-mentioned conventional technique, since the lamps are integrated, that is, combined, the wraparound becomes large, and further,
Since the size is increased, the temperature difference on the inner surface of the lens becomes large, and there is a problem that the humidity inside the lamp body easily causes water droplets e to condense on the low temperature portion d on the inner surface of the lens a as shown in FIG.

Further, since an uncut clear lens is used, the interior of the lamp is transparent, so that the fog formed on the inner surface of the lens is very noticeable and the appearance of the lamp is impaired.

Therefore, the present invention was devised in view of the problems of the above-mentioned conventional techniques, and an object thereof is to provide an automobile illumination lamp for preventing dew condensation or fogging of a lens.

[0006]

In order to achieve the above-mentioned object, in an automotive lighting according to the present invention, a dry curing type hydrophilic clear coating paint is applied to the ineffective light emitting surface of a transparent resin lens which is transparent and has no cut. It has been configured.

[0007]

As shown in FIG. 3, since water droplets of humidity that condense on the lens surface are formed into a water film and are evenly absorbed on the surface of the non-effective light emitting surface, the lens cloudy appearance is not noticeable. become.

[0008]

EXAMPLES Examples will be described with reference to FIGS. As the lens 1 of the automobile illumination lamp, a transparent uncut transparent resin lens such as a polycarbonate resin lens is used.

A dry-curable hydrophilic clear coating paint 5 is applied to the inner surface 3 of the lens 1, which is an ineffective light emitting surface 4 at the time of lighting. 2 is a lens 1
Shows the outer surface of.

The clear coating composition 5 is composed of sorbitan fatty acid ethylene oxide, urethane acetate, sorbitan fatty acid ester, etc. as a component. By curing and forming a coating, the coating performance can be maintained for a long time. It is a thing.

Then, the surface of the lens of the ineffective light emitting surface 4 is cured by the coating material 5 to reduce the surface tension of the polycarbonate lens, and the water droplets of the dew condensation on the inner surface 3 of the lens are made into the water film 6 to form the ineffective light emitting surface 4. Evenly adapts to the surface (see Fig. 3).

[0012]

Since the present invention is constructed as described above, it has the following effects. Since the hydrophilic coating is applied to the ineffective light emitting surface of the lens, the surface tension of the polycarbonate lens is made small, and the water droplets of the dew condensation on the surface are evenly absorbed on the lens surface so that the cloudiness of the lens is inconspicuous. Can be

Further, since the clear coating paint becomes a film by being dried and cured, it has long-term durability and heat resistance as compared with a usual non-drying type antifogging agent.

[Brief description of drawings]

FIG. 1 is a perspective view of a lens of the present invention.

FIG. 2 is a central vertical sectional view.

FIG. 3 is a cross-sectional view of an essential part of the present invention.

FIG. 4 is a structural explanatory view of a conventional lamp.

FIG. 5 is a perspective view of a main part showing an ineffective light emitting surface of a lens of a conventional example.

FIG. 6 is an explanatory diagram of a main part of a conventional lens in a dew condensation state.

[Explanation of sign]

 1 Lens 3 Inner surface of lens 4 Non-effective light emitting surface 5 Clear coating

Claims (1)

[Scope of utility model registration request] 1. An automobile illuminating lamp comprising a transparent and uncut transparent resin lens coated with a dry-curable hydrophilic clear coating paint on the ineffective light emitting surface.