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Halogen incandescent lamp for motor vehicles

A technology for motor vehicles, incandescent lamps, applied in the field of halogen incandescent lamps

Inactive Publication Date: 2008-11-26
LUMILEDS HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The known car lights have the disadvantage that the coating over the entire bulb leads to a subjective impression that the light produced by the bulb is dimmer than that produced by a white glass bulb

Method used

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  • Halogen incandescent lamp for motor vehicles
  • Halogen incandescent lamp for motor vehicles
  • Halogen incandescent lamp for motor vehicles

Examples

Experimental program
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Effect test

Embodiment Construction

[0015] figure 1 Shown is a motor vehicle lamp of the type H4, which has a substantially cylindrical bulb 1 made of quartz glass. The bulb 1 has a closed end 2 provided with a light-absorbing coating 12 . Two incandescent elements 4 and 5 which are designed as tungsten coils are arranged in a bulb 1 which is filled with a halogen-containing gas. A passing light coil 4 is used to generate passing (low) beams, and a high beam coil 5 is used to generate high beams in motor vehicle headlights. The passing light coil 4 is connected to the power supply lines 6 and 8 , and the high beam coil 5 is connected to the power supply lines 7 and 8 . The supply wires 6, 7 and 8 are secured in a pinch seal 3 which seals off the other end of the bulb 1 in a vacuum-tight manner. Also in the bulb 1 is a fixing element 30 which stabilizes the respective relative positions of the supply lines 6, 7 and 8. In this way, the passing light coil 4 and the high beam coil 5 are in a certain position in ...

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PUM

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Abstract

The invention relates to a halogen incandescent lamp for motor vehicles with an elongate bulb (1) which is closed at one end (2) and has a vacuum tight pinch seal (3) at the other end, with at least one incandescent element (4,5) arranged in the bulb (1), with a lamp cap (9) connected to the pinch seal (3), and with current supply leads (6,7,8) which are passed through the pinch seal to the incandescent element(4,5), with an annular optical filter (13) which is provided at the closed end (2) of the bulb(1). It is possible with such a halogen incandescent lamp in a simple manner both to change the subjective impression of the generated light and to improve the objective properties through emphasizing of a desired region of the spectrum.

Description

technical field [0001] The invention relates to a halogen incandescent lamp for motor vehicles having an elongated bulb closed at one end and having a vacuum-tight pinch seal at the other end, at least one incandescent element mounted in the bulb and a cap connected to A pinch seal through which the supply conductors pass to the incandescent element. Background technique [0002] Such halogen incandescent lamps for motor vehicles are, for example, conventional H4 or H7 lamps. Bulbs are usually made of quartz or hard glass and are roughly cylindrical. But the diameter of the bulb does not have to remain constant along the length. The tubular bulb is closed at one end in a fusing process. Depending on the type, one (H7) or two (H4) incandescent elements, usually made of tungsten coils, are installed in the bulb. The incandescent element is usually connected by soldering to a supply wire made of a material such as molybdenum wire and introduced into the bulb through the sti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01K1/32H01K9/08H01K1/50H01J61/40F21S8/10F21S10/02F21V9/08F21W101/10F21Y101/00H01K1/26
CPCH01J61/40Y02B20/12H01K1/32H01K9/08H01K1/50Y02B20/00H01K1/14
Inventor R·格维尔梅耶H·施勒黙R·谢菲L·温施F·-J·布吕克曼
Owner LUMILEDS HLDG BV
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