Headlight control device

A technology for control devices and headlights, which can be used in projection devices, printing devices, signal devices, etc., and can solve problems such as difficult to recognize images

Active Publication Date: 2016-12-14
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, even if you want to project the same image at the same position on the road surface through a pair of headlamps, the image projected on the road surface by the light of one headlamp will be different from the image projected on the road surface by the light of the other headlamp. The projected image is biased and it is difficult to recognize the image

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach ＞

[0018] 1. Structure of the headlight control device 1 and the headlight device 7

[0019] based on figure 1 The structures of the headlight control device 1 and the headlight device 7 will be described. The headlamp control device 1 is an in-vehicle device that controls a headlamp device 7 including a pair of headlamp units 3 and 5 .

[0020] The headlamp unit 3 is disposed on the left side of the front end of the vehicle, and the headlight unit 5 is disposed on the right side of the front end of the vehicle. The headlamp units 3 , 5 each radiate light toward the front of the vehicle. The headlight units 3, 5 have the same structure. Here, the headlamp unit 3 will be described as an example.

[0021] The headlight unit 3 includes a light source 9 . As the light source 9 , various known lamps that can be used as a light source for vehicle headlights, such as a halogen lamp and a xenon lamp, can be used. The light source 9 is controlled to be turned on and off by the headl...

no. 2 approach ＞

[0054] 1. Structure of the headlight control device 1 and the headlight device 7

[0055] The structures of the headlight control device 1 and the headlight device 7 are basically the same as those of the above-mentioned first embodiment, with some differences. Hereinafter, the difference will be mainly explained.

[0056] When the projected image control unit 22 projects a composite image of a specific shape on the road surface using the headlight units 3 and 5 , the liquid crystal panels 16R, 16G, and 16B of the headlight unit 3 and the liquid crystal panel of the headlight unit 5 16R, 16G, and 16B generate mutually different images.

[0057] That is, the projected image control unit 22 generates an image of a specific shape in a large size on the liquid crystal panels 16R, 16G, and 16B of the headlight unit 3 . As a result, as image 3 As shown in (A), in the synthesized light 101 irradiated from the headlight unit 3 , an image 109 of a specific shape is projected largel...

no. 3 approach ＞

[0065] 1. Structure of the headlight control device 1 and the headlight device 7

[0066] The structures of the headlight control device 1 and the headlight device 7 are basically the same as those of the above-mentioned first embodiment, but are partially different. Hereinafter, the difference will be mainly explained.

[0067] When the projected image control unit 22 projects a synthetic image of a specific shape on the road surface using the headlight units 3 and 5, no image is generated on the liquid crystal panels 16R, 16G, and 16B of the headlight unit 3, and the image is not generated on the headlight unit 3 . 5 liquid crystal panels 16R, 16G, 16B generate images.

[0068] That is, the projected image control unit 22 does not generate an image on the liquid crystal panels 16R, 16G, and 16B of the headlight unit 3, such as Figure 4 As shown in (A) of (A), the brightness of the synthesized light 101 irradiated from the headlight unit 3 is increased at any position.

...

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PUM

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Abstract

A headlight control device (1) which is equipped with a light source (9) and image generation units (16R, 16G, 16B) capable of generating images and provided along the optical path of the light from the light source, and controls a headlight device (7) provided with a pair of headlight units (3, 5) for illuminating the road surface with light (101, 105) for projecting the images, the headlight control device being characterized in that the images are generated by the image generation unit in a manner such that the first image (103) projected onto the road surface by one of the headlight units encompasses the second image (107) projected onto the road surface by the other of the headlight units.

Description

technical field [0001] The invention relates to a headlamp control device. Background technique [0002] As a headlight device for a vehicle, a headlight device in the form of a projector is known. A headlamp device in the form of a projector is provided, for example, on a liquid crystal panel capable of forming an image on the optical path of light from a light source, and projects the light transmitted through the liquid crystal panel onto the road ahead of the vehicle through a lens. As a result, the image formed on the liquid crystal panel is projected on the road surface (see Patent Document 1). [0003] Patent Document 1: Japanese Unexamined Patent Publication No. 2008-143505 [0004] Since a vehicle generally has a pair of left and right headlights, it is considered that the light passing through both headlights projects the same image at the same position on the road surface. However, the image projected on the road surface is stretched in a specific direction by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60Q1/04
CPCB60Q1/143B60Q2300/112B60Q2300/114B60Q2300/132B60Q2300/312B60Q2300/322B60Q2300/324B60Q2300/45B60Q2400/50F21S41/162F21S41/172F21S41/25F21S41/285F21S41/645G03B21/006G03B29/00B60Q1/16B60Q2300/054
Inventor 水野龙
Owner DENSO CORP
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