Head lamp of vehicle

A technology for headlights and vehicles, which is applied in the field of headlights and can solve problems such as high cost, large-scale headlights, and additional lamp units

Active Publication Date: 2008-12-03
KOITO MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, as mentioned above, it is necessary to add different light distribution characteristics to realize the medium beam light distribution pattern, the rainy weather light distribution pattern, the DRL light distribution pattern, etc. on the basis of the high beam light distribution pattern and the low beam light distribution pattern. The number of lamp units needs to be further increased, and there are problems such as large-scale headlights and high costs.

Method used

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  • Head lamp of vehicle
  • Head lamp of vehicle
  • Head lamp of vehicle

Examples

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Embodiment 1

[0035] Next, Embodiment 1 of the present invention used in an automobile headlamp will be described. figure 1 It is a schematic front view of a left headlamp LHL arranged among the left and right headlamps arranged at the front of the vehicle. The left headlamp LHL is equipped with five lamp units LU in the desired arrangement in the lamp housing 1 . Here, the five lamp units LU are horizontally arranged in a row in the horizontal direction, and the H2 lamp unit LUH2, the H1 lamp unit LUH1, the L2 lamp unit LUL2, the L1 lamp unit LUL1, and the L3 lamp are used from the center side of the car, that is, the left side in the figure. The unit LUL3 constitutes. The light units LUH1 and LUH2 of H1 and H2 are mainly used to form the high beam light distribution pattern, and the light units LUL1, LUL2 and LUL3 of L1, L2 and L3 are mainly used to form the low beam light distribution pattern lamp unit. As will be described later, these five lamp units LU all use LEDs that emit white ...

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Abstract

The invention relates to a miniature headlight with low cost which uses lamp unit with minimum limited amount to compose the lamp unit of the headlight, in other aspect, realizes various light distribution pattern. The headlight comprises a line focusing type lamp unit LUH2, LUH3 taking LED as the light source and diffused light type lamp unit LUH1, LUL1, LUL2; wherein, the headlight comprises a light distribution control device PCNT for selecting at least a part of illume of the plurality of lamp units and controlling the light intensity of a part of the selected lamp unit; the headlight controls the light intensity of the selected lamp unit through illumine. Light intensity control part and forms the desired light distribution pattern through the synthetic light of the controlled lamp unit. The miniature headlight having lost and various light distribution pattern is obtained by not increasing the amount of the lamp unit.

Description

technical field [0001] The present invention relates to headlights of vehicles such as automobiles, and more particularly relates to a plurality of lamp units having semiconductor light-emitting elements such as LEDs (light emitting diodes) as light sources, and utilizing all of these plurality of lamp units or a combination of selected lamp units A vehicle headlamp that obtains a desired light distribution pattern with light. Background technique [0002] In recent automobiles, headlights using low-energy LEDs as light sources have been proposed. The amount of light of LEDs is low compared to incandescent lamps or discharge lamps. Therefore, in Patent Document 1, a plurality of lamp units (lamp units) of the concentrating or diffusing type are used, which combine reflectors or lenses using LEDs as light sources. To configure the headlamp, all or a selected part of these lamp units are turned on, and the lights emitted from the turned on lamp units are synthesized to obtain...

Claims

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Application Information

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IPC IPC(8): F21S8/12F21V5/00B60Q1/02F21W101/10H01L33/58H01L33/60
Inventor 石田裕之田中秀忠小松元弘
Owner KOITO MFG CO LTD
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