JPH0572004U - Automotive lighting - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention is intended for an automobile illumination lamp for preventing condensation and fogging on a lens due to humidity. [Structure] A dry-curable hydrophilic clear coating paint 5 is applied to an ineffective light emitting surface 4 of a transparent resin lens 1 which is transparent and has no cut.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle lamp used for a headlamp and a fog lamp, etc., which uses a transparent and uncut lens.

[0002]

[Prior 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]

[Problems to be solved by the device]

 However, in the above-mentioned conventional technique, the lamp is integrated, that is, the combination is made, so that the wraparound becomes large, and further, since the size is increased, the temperature difference on the inner surface of the lens becomes large and the lamp body has a large difference. There is a problem in that the water droplet e is likely to be condensed on the low temperature portion d on the inner surface of the lens a as shown in FIG.

Further, since the inside of the lamp is transparent due to the use of the uncut clear lens, the fog formed on the inner surface of the lens is very conspicuous, and the appearance of the lamp is impaired.

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

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the automotive lighting according to the present invention is configured such that a dry-curable hydrophilic clear coating paint is applied to the ineffective light emitting surface of a transparent uncut transparent resin lens.

[0007]

[Action]

 As shown in Fig. 3, water droplets with humidity that condense on the lens surface are made into a water film and are evenly blended with the surface of the ineffective light emitting surface, so that the appearance is not noticeable as clouding of the lens. Become.

[0008]

【Example】

 Examples will be described with reference to FIGS. 1 to 3. The lens 1 of the automotive lighting uses a transparent, uncut transparent resin lens, for example, a polycarbonate resin lens.

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. Reference numeral 2 denotes the outer surface of the lens 1.

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

Then, the coating 5 is used to cure the lens surface of the ineffective light emitting surface 4 to reduce the surface tension of the polycarbonate lens, and water droplets of humidity that condense on the inner surface 3 of the lens are made into the water film 6 to cause the ineffective light emission. The surface 4 is made to fit uniformly (see FIG. 3).

[0012]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects. The hydrophilic coating is applied to the ineffective light emitting surface of the lens, so the surface tension of the polycarbonate lens is reduced, and the water droplets of the dew condensation on the surface are evenly absorbed on the lens surface to make the lens cloudy state inconspicuous. Can be in a state.

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 longitudinal 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 an essential 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 lens inner surface 4 ineffective light emitting surface 5 clear coating paint

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.