Motor vehicle headlamp

A technology for automobile headlights and automobiles, applied in the direction of headlights, vehicle lighting systems, lighting devices, etc., can solve problems such as power loss of LEDs, installation of LEDs, heat dissipation, etc., and achieve the effect of compact structure

Inactive Publication Date: 2012-07-04
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it is difficult to install a sufficient number of light-emitting diodes in a limited space so that the specified light intensity can be achieved
Also, LEDs generate power losses, so heat dissipation is also an issue

Method used

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  • Motor vehicle headlamp
  • Motor vehicle headlamp
  • Motor vehicle headlamp

Examples

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Embodiment Construction

[0034] figure 1 A top view showing a lighting unit with multiple regions of light emitting diodes. The lighting unit 1 comprises a circuit board 2 on which light emitting diodes and corresponding wiring are arranged. The light emitting diodes are represented by squares and are located in the center of the circuit board 2 .

[0035] figure 2 A magnified view of the center of the board is shown. Light emitting diodes can be distinguished by their size. The large light-emitting diodes have a side length of 0.98 mm, the medium-sized light-emitting diodes have a side length of 0.58 mm and the small light-emitting diodes have a side length of 0.28 mm. A plurality of light-emitting diode regions and a plurality of individual light-emitting diodes are provided on the printed circuit board 2 . The light-emitting diode area 11 has 49 large light-emitting diodes and is arranged in the lower half and vertically in the center of the circuit board. Arranged to the right of the light-...

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Abstract

A motor vehicle headlamp is provided with a first array of light-emitting diodes, which are activated by a first actuation unit for a first lighting function. The headlamp also exhibits a second array of light-emitting diodes, which are activated by a second actuation unit for a second lighting function. Additionally provided is a flat printed-circuit board with conducting paths for connecting light-emitting diodes with one of the respective actuation units. The light-emitting diodes are accommodated together on one side of the printed-circuit board.

Description

technical field [0001] The invention relates to an automobile headlamp. Automotive headlights provide a variety of lighting functions. These lighting functions are, for example, low beam and high beam. Background technique [0002] It is also known to use light-emitting diodes in headlights instead of, for example, xenon lamps. But there is only limited space in a car for headlights. A headlight with a plurality of light-emitting diodes as light sources is described in DE 10 2007 031 934 A1. However, it is difficult to arrange a sufficient number of light emitting diodes in a limited space so that a prescribed light intensity can be achieved. In addition, LEDs generate power losses, so heat dissipation is also an issue. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a motor vehicle headlight which is operated by means of light-emitting diodes and has sufficient light intensity. [0004] The invention relat...

Claims

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Application Information

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IPC IPC(8): F21S10/06F21V23/06F21W101/10F21Y101/02
CPCB60Q1/16F21S10/06F21S48/1154B60Q1/00F21S48/1233F21S8/12F21S48/1109F21V23/06F21S48/1747B60Q1/04F21Y2105/12F21S41/192F21S41/143F21S41/28F21S41/663F21S41/153
Inventor J.凯斯曼A.格罗I.施耐德T.Q.坎
Owner GM GLOBAL TECH OPERATIONS LLC
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