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Vehicular lamp

A technology for lamps and vehicles, applied in lighting devices, cooling/heating devices of lighting devices, fixed lighting devices, etc., can solve the problems of temperature difference and high temperature, improve position accuracy, eliminate distortion and bending deformation, improve distribution The effect of light performance

Inactive Publication Date: 2010-06-23
ICHIKOH IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, the above-mentioned second reflector is arranged away from the semiconductor-type light source and the first reflector covering its surroundings in the optical design of the light source unit, and is arranged to protrude from the heat sink, so the semiconductor-type light source and the first reflector There is a difference in the heat dissipation effect caused by the heat sink between the surrounding and the second reflector, that is, there is a temperature difference and there is a tendency that the temperature around the second reflector is higher than that of the semiconductor-type light source and the first reflector.

Method used

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Examples

Experimental program
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Embodiment Construction

[0028] An embodiment of the present invention will be described in detail below by taking the headlight of an automobile as an example in conjunction with the accompanying drawings.

[0029] Figure 1 to Figure 5 The headlight of the present embodiment shown has: a semiconductor-type light source 10; a first reflector 11, which covers the front side of the lamp of the semiconductor-type light source 10, and has a light direction emitted from the semiconductor-type light source 10; The concave reflective surface 12 reflected above; the second reflector 13, which has a concave reflective surface 14 that reflects the light reflected by the first reflector 11 to the front of the lamp; The resulting heat spread.

[0030] The light source unit 1 is constituted by the above-mentioned semiconductor-type light source 10, the first reflector 11 and the second reflector 13. The light source unit 1 and the heat sink 20 are combined to form a lamp unit 2 .

[0031] Further, the lamp uni...

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Abstract

The invention provides a vehicular lamp with excellent photometric performance instead of the deteriorated photometric performance caused by the thermal deformation of reflectors or the assembly errors of the reflectors. The vehicular lamp is provided with a semiconductor-type light source, a first reflector, a second reflector and a radiating rib, wherein the first reflector covers the semiconductor-type light source and reflects light emitted from the semiconductor-type light source to a preset direction; the second reflector reflects the reflecting light from the first reflector to the front of the lamp; and the radiating rib intensely arranges the semiconductor-type light source, the first reflector and the second reflector. The vehicular lamp is characterized in that at least the second reflector and the radiating rib are integrally formed.

Description

technical field [0001] The present invention relates to a vehicle lamp used as a headlight, a rear combination lamp, and the like of an automobile. Background technique [0002] In recent years, self-luminous semiconductor-type light sources such as light emitting diodes (LEDs) have been used as light sources for vehicle lamps such as headlights. [0003] Such a semiconductor-type light source constitutes a light source unit together with a reflector that reflects light from the light source in a predetermined direction, and is placed in a lamp chamber composed of a housing and an outer lens (see Patent Document 1). [0004] Patent Document 1: JP-A-2004-207235 [0005] A semiconductor-type light source used as a light source of a vehicle lamp has been increased in luminance in order to improve the lighting effect, and the amount of radiation has increased with the increase in luminance. As a measure to suppress the temperature rise of the semiconductor-type light source, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/10F21V7/20F21V7/10F21Y101/02F21V29/505
Inventor 川村孝幸
Owner ICHIKOH IND LTD
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