JPH01279503A - Light - Google Patents

Abstract

PURPOSE:To provide possibility of using a lens cover made of plastic and accomplish a light in lightweight and with high strength by using a cold mirror to a reflector, and allowing part of heat rays emitted from a light source to pass from the reflector. CONSTITUTION:In a reflector 2 using a color mirror, a beam of light is reflected from an electric bulb 2, and heat rays 5 are allowed to penetrate. This decreases the amount of heat rays attaining a lens cover 1 to suppress temp. elevation, which accomplishes an ID lamp with possibility of continuous lightup by means of a lens cover made in plastic having two functions, i.e. a cover for light and a lightweight strength member. This constitution achieves a lightweight and high strength light with high output using a lens cover in plastic without use of lens cover made of heat resistant hard glass. Also this permits application to various highly luminous illuminations satisfactorily, including a landing light, collision preventive light, etc. for aircraft.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a light having a heat ray absorbing reflector structure using a cold mirror, which is applied to aircraft recognition lights and the like.

[Prior Art] As shown in Figure 2, in conventional lights using reflectors, the temperature rises due to the heat rays emitted directly from the light source (light bulb) and the heat rays reflected from the reflector, so the lens cover has Hard glass with excellent heat resistance is required.

[Problems to be Solved by the Invention] Heat-resistant hard glass used as a lens cover has various drawbacks, such as difficulty in calculating strength, heavy weight, and easy breakage.

On the other hand, plastic lens covers can overcome the above-mentioned drawbacks of heat-resistant hard glass, but they are inferior in heat resistance compared to heat-resistant hard glass, and are less susceptible to heat rays irradiated directly from the light source.
and temperature rise due to heat rays reflected from the reflector,
The disadvantage is that the light cannot be turned on continuously and the lighting time must be limited, making it impractical.

The present invention was made in view of the above circumstances, and an object of the present invention is to provide a light with a heat ray absorbing reflector structure that reduces heat rays irradiated to the lens cover and enables continuous lighting with a plastic lens cover.

[Means for Solving the Problems] A light having a heat ray absorbing reflector structure according to the present invention has a structure in which a cold mirror is used as a reflector, and the heat rays from the light bulb are transmitted through the reflector, thereby reducing the amount of heat rays reaching the lens cover. There is.

[Function] As described above, the light according to the present invention uses a cold mirror as a reflector, so the heat rays irradiated to the cold mirror pass through the mirror, and only the light rays are reflected by the mirror, which leads to the lens cover. This reduces the amount of heat rays that reach the lamp, suppresses the increase in sensitivity of the lens cover, and enables continuous lighting with a plastic lens cover.

[Embodiment] An embodiment of the present invention will be described with reference to FIG. 1 using a recognition lamp with a rated output of 150 W as an example.

A reflector 2 using a cold mirror reflects light rays 4 from a light bulb 3 and transmits heat rays 5.

This makes it possible to realize a recognition light that suppresses the temperature rise of the lens cover 1 and enables continuous lighting using a plastic lens cover that has both the functions of a light cover and a lightweight strength member.

By adopting the configuration of the embodiment described above, it is possible to realize a lightweight, high-intensity, high-output light using a plastic lens cover without using a lens cover made of heat-resistant hard glass, and it is possible to realize a lightweight, high-intensity, high-power light for use in aircraft landings. It is fully applicable to various types of high-intensity lighting including lights, collision prevention lights, etc.

[Effects of the Invention] As detailed above, according to the light of the present invention, a cold mirror is used as a reflector, and the structure allows heat rays from the light bulb to pass through, so that a plastic lens cover can be used. A lightweight, high-intensity light can be created.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the configuration of a light having a heat ray absorbing reflector structure according to an embodiment of the present invention, and FIG. 2 is a diagram showing the configuration of a light having a conventional configuration. 1...Lens cover (plastic), 2...Reflector (cold mirror), 3...Light bulb (light source),
4...Light rays, 5...Heat rays, 6...Outer panels. Applicant's agent Patent attorney Takehiko Suzue

Claims (1)

[Claims] A light that provides illumination with direct light from a light source and reflected light from a reflector, the light having a structure in which a cold mirror is used as the reflector, and a portion of the heat rays emitted from the light source is transmitted through the reflector.