JPH0412563Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to a projector-type fog lamp that is used by being attached to a vehicle such as an automobile or a motorcycle.

[Prior art]

This type of projector-type fog lamp produces a yellow luminescent color by coloring the front lens itself yellow, by providing a yellow inner lens, or by painting the lens yellow.

[Problem that the idea aims to solve]

In the case of the conventional example in which the lens itself is colored, there is a problem that the planned light distribution cannot be obtained because the refractive index of the lens material changes, and in the case of the case using the inner lens, There is a problem that the light distribution pattern is affected by the thickness or surface shape of the inner lens, and if it is painted yellow, the lens not only loses its transparency but also looks unsightly. Another problem is that the light distribution pattern deteriorates due to uneven coating. Furthermore, the projector-type fog lamp has a problem in that the convex lens part becomes hot due to the concentration of light from the light source and reflected light from the reflector, which causes the lens to crack due to heat shock.

[Means to solve the problem]

As a specific means for solving the problems in the conventional example, the present invention is characterized in that, in a projector-type fog lamp, a multilayer film coating is applied by vacuum evaporation to the flat surface on the reflector side of the aspherical convex lens that forms the light distribution. The multilayer coating is capable of transmitting visible light other than yellow wavelengths and infrared light (heat).
It is a coating film that reflects light, thereby creating a yellow luminescent color.

【Example】

Next, the present invention will be explained in more detail with reference to the illustrated embodiment. Reference numeral 1 denotes a housing, and a reflector 2 having a substantially elliptical shape is disposed inside the housing, and a spacer 3 is interposed in the front opening of the reflector. This is a projector type fog lamp to which an aspherical convex lens 4 is attached. Then, a multilayer film coating 5 is formed on the flat surface of the aspherical convex lens 4 on the reflector 2 side by vacuum deposition, and the multilayer film coating reflects visible light and infrared light (heat) other than yellow wavelengths. It is a coating film that produces the yellow luminescent color of a fog lamp. In the figure, 6 is a light source attached to the reflector, 7 is a socket,
8 is a black light shielding plate. In the fog lamp of the present invention having the above configuration, the light emitted from the light source 6 is directly emitted and the reflected light reflected by the reflector 2 is directed toward the aspherical convex lens 4, and a multilayer film formed on the inner flat surface of the aspherical convex lens 4 is used. As shown in Figure 2, the coating 5 allows only yellow wavelength light to pass through, while visible light, infrared light, and other light are reflected and not transmitted, resulting in a yellow luminescent color as a fog lamp. It is something that can be done. Incidentally, the upward reflected light reflected by the reflector 2 is blocked by the light shielding plate 8, resulting in an appropriate light distribution.

[Effect of the idea]

As explained above, the fog lamp according to the present invention is a projector-type fog lamp in which the flat surface on the reflector side of the aspherical convex lens that forms the light distribution is coated with a multilayer film by vacuum deposition. The multilayer film coating is a coating film that has the function of reflecting visible light and infrared light other than yellow wavelengths, so the multilayer film coating provides a yellow emission color as a fog lamp, and is different from conventional examples. Unlike those that use an inner lens or are painted, the light distribution is good and there is a sense of transparency.
Moreover, various excellent effects such as improved appearance are achieved. Furthermore, since the multilayer coating has the function of reflecting visible light and infrared light other than yellow wavelengths, it can lower the temperature of the convex lens, which becomes hot due to the concentration of light. This also has the excellent effect of preventing lens cracking due to heat shock.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view of a fog lamp according to the present invention, and FIG. 2 is a schematic diagram for explaining the function of a multilayer film coating formed on a convex lens in the fog lamp. 1...Housing, 2...Reflector, 3...
... Spacer, 4 ... Aspherical convex lens, 5 ... Multilayer film coating, 6 ... Light source, 7 ... Socket, 8 ... Light shielding plate.

Claims (1)

[Scope of utility model registration request] In projector-type fog lamps,
A fog lamp characterized by having a vacuum-deposited multilayer film coating that reflects visible light and infrared light other than yellow wavelengths applied to the flat surface of the reflector side of the aspherical convex lens that forms the light distribution.