Vehicle-mounted metallic halide discharge lamp

Abstract

This invention provides a mobile metal halid discharge lamp, which injects high pressure xenon gas of 400 to 900Kpa into the discharging tube of 35W to 50W and injects mercury vapor 3.3 to 15 mg per cu.cm and injects yellow metal xenon, wherein the light color chroma point (x,y) with x is 0.465 and y is 0.38 in the enclosure trapezia of four points of (0.41,0.44), (0.405,0.46), (0.45,0.35), (0.48,0.35).

Description

technical field [0001] The invention relates to a metal halide discharge lamp for vehicles, in particular to a metal halide discharge lamp suitable for automobile front fog lamps. Background technique [0002] At present, the fog penetration ability of automobile headlights is not very strong. In the past, car front fog lamps generally used H-type halogen tungsten lamps with a color temperature of 3000K as the fog light source. The front panel glass of the fog lamps is a yellow glass plate that only transmits yellow light. About 1 / 3 of the yellow and green lights that pass through, the actual fog penetration ability is very weak. In recent years, 35W high-pressure xenon metal halide discharge lamps (commonly known as xenon headlights, or HID headlights) have been widely used. As low beams and high beams, the irradiation width and range have been greatly improved, but 35W xenon metal halide Because the color temperature of the lamp is above 4000K, the yellow light part is l...

AI Technical Summary

Problems solved by technology

In the past, car front fog lamps generally used H-type halogen tungsten lamps with a color temperature of 3000K as the fog light source. The front panel glass of the fog lamps is a yellow glass plate that only transmits yellow light. About 1 / 3 of the yellow and green lights that pass through, the actual fog penetration ability is very weak

In recent years, 35W high-pressure xenon metal halide discharge lamps (commonly known as xenon headlights, or HID headlights) have been widely used. As low beams and high beams, the irradiation width and range have been greatly improved, but 35W xenon metal halide Because the color temperature of the lamp is above 4000K, the part of yellow light is less. Compared with the low beam and high beam, it is too dark when used as a fog lamp, and its ability to penetrate fog is limited.

In recent years, for example, Japanese patents (Japanese Patent Application Laid-Open No. 5-325895) have proposed coating a layer of yellow multilayer interference film on the surface of the HID car lamp shell to reduce the color temperature of a lamp with a color temperature of 4000K to 2000-3500K, although After coating this layer of film, the light color of the metal halide lamp becomes yellow light, but also loses a lot of light, and the yellow light still only accounts for about 1 / 3 of the original total luminous flux.

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