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Headlamp module and headlamp

A technology of headlights and projection lenses, which is applied in the field of headlights, can solve problems such as dazzling oncoming vehicles, and achieve the effect of suppressing large-scale

Active Publication Date: 2018-01-19
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, there is a problem of blinding the oncoming vehicle

Method used

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  • Headlamp module and headlamp
  • Headlamp module and headlamp
  • Headlamp module and headlamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0041] In recent years, European regulations have approved light sources using semiconductors (hereinafter referred to as semiconductor light sources) as vehicle headlamps. The semiconductor light source is, for example, an LED light source or a laser light source. Based on these circumstances, headlamps for vehicles have been miniaturized by mounting semiconductor light sources. In Embodiment 1, it will be described assuming that the light source 11 is, for example, an LED light source.

[0042] In addition, in the vehicle headlamp, the light distribution of the light emitted from the light source unit forms a cutoff line at the upper edge of the light distribution pattern. And, the formation of the cut-off line is stipulated by regulations. The light distribution pattern is formed, for example, by shielding light from a lampshade (for example, a visor or the like). In addition, the light distribution pattern is formed, for example, by reflection of a reflector (such as a ...

Embodiment approach 2

[0201] In the second embodiment, a part of the drive unit 16x and the drive unit 16y described in the first embodiment are integrated. Integrating part of the drive unit 16x and the drive unit 16y described in Embodiment 1 can further suppress enlargement of the structure capable of moving the light distribution of the headlamp module in the vertical direction or the horizontal direction.

[0202] Figure 11 It is a perspective view of the headlamp module 2 of Embodiment 2. and, Figure 12 It is an exploded perspective view of the headlamp module 2 according to Embodiment 2, with a part of the structure removed.

[0203] Such as Figure 11 As shown, the headlamp module 2 of Embodiment 2 has a light source 11 , a projection lens 13 , a holding member 15 , an adjustment shaft 40 , and a drive unit 50 . The headlamp module 2 may have a base portion 18 , an optical component 202 , and a lens holder 19 .

[0204] The base portion 18 fixes the light source 11 . The optical com...

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PUM

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Abstract

A headlamp module (1) comprises a light source (11), a projection lens (13), a holding member (15), and a drive unit (16). The light source (11) emits a light. The projection lens (13) lets the lightin as incoming light and lets the light out as projection light. The holding member (15) contains bending portions (502, 503) each extending in the optical axis direction of the projection lens (13),and has one extremity that is a fixed extremity and the other extremity that is a mobile extremity. The holding member (15) holds the projection lens (13) via the mobile extremity in order to movablyhold the projection lens (13) relative to the light source (13). The drive unit (16) causes the projection lens (13) to move. By bending the bending portions (502, 503), the projection lens (13) translationally moves on a plane orthogonal to the optical axis of the projection lens (13).

Description

technical field [0001] The present invention relates to a vehicle headlamp, and more particularly to a small headlamp module capable of changing light distribution according to driving conditions. Background technique [0002] According to European regulations, the AFS (Adaptive Front Lighting System: Adaptive Front Lighting System) that changes the light distribution pattern of the headlights during driving in response to changes in the movement of the vehicle or changes in the external environment of the vehicle is stipulated in the regulations. ). For example, headlamps equipped with AFS ensure a wide field of view including the gaze point observed by the driver when turning by shifting the light distribution in the left and right directions. In addition, through the headlights equipped with AFS, the driver can detect obstacles such as people, animals or parked vehicles as early as possible. Also, the driver can more safely take an evasive action against an obstacle or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F11/56F21S41/63F21W102/30F21Y115/10
CPCF21S41/143F21S41/295F21S41/635F21S41/147F21S41/322F21S41/255F21S41/24F21S41/28F21S41/25F21S41/26F21S41/00
Inventor 山隅允裕大岛律也道盛厚司诹访胜重小岛邦子
Owner MITSUBISHI ELECTRIC CORP