LED (Light-Emitting Diode) three-dimensional packaging-based vehicle headlamp and vehicle illumination method

A technology for automotive headlights and three-dimensional packaging. It is applied in lighting devices, fixed lighting devices, and lighting auxiliary devices. It can solve the problems of inability to provide the total luminous flux of headlights, low integration of planar light sources, and large volume, and achieve high efficiency. Reliable heat transfer performance, simple structure, small size effect

Inactive Publication Date: 2012-06-27
FOSHAN NATIONSTAR OPTOELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1) The level of integration of planar light sources is low and cannot provide the total luminous flux required by automobile headlights;
[0006] 2) bulky;
[0007] 3) It is necessary to use a mechanical motion system to realize the adjustment of the light emission angle. The mechanical motion system includes a drive motor and multiple moving parts, and the reliability of long-term use is poor;
[0008] 4) High cost

Method used

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  • LED (Light-Emitting Diode) three-dimensional packaging-based vehicle headlamp and vehicle illumination method
  • LED (Light-Emitting Diode) three-dimensional packaging-based vehicle headlamp and vehicle illumination method
  • LED (Light-Emitting Diode) three-dimensional packaging-based vehicle headlamp and vehicle illumination method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] like Figure 1A , 1B As shown, the LED three-dimensional package light source 1 in this embodiment includes a base 11, an LED chip 12 arranged on the base 11, and a package body 13 covering the LED chip 12. The inner encapsulation layer 131 and the outer surface 132 of the encapsulation body 13 are non-planar curved encapsulations to provide different light distribution curves.

[0060] In this embodiment, the base 11 is a hexagonal prism, and each side of it is used as a chip mounting surface. The base 11 has two upper mounting surfaces 111, two lower mounting surfaces 112, a left mounting surface 113, and a right mounting surface. On the mounting surface 114 , each LED chip mounting surface faces different directions, and each LED chip mounting surface is mounted with a plurality of LED chips 12 . The center of the base 11 is provided with a mounting hole 115, and the cross section of the mounting hole 115 is circular or other polygonal structures. The LED three-dim...

Embodiment 2

[0064] like Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that the inner wall of the reflector 41 is only composed of a plurality of large reflective surfaces 411, and a plurality of large reflective surfaces 411 are arranged to form a free-form surface with a narrow bottom and a wide top, and each reflective surface 411 Corresponding to each independently light-controllable light-emitting area, the light-emitting area is composed of one or more chip mounting surfaces.

Embodiment 3

[0066] like Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that the reflective surface of the reflector 51 is only composed of a smooth curved surface 511, which is a free curved surface with a narrow bottom and a wide top. The smooth curved surface 511 is divided into multiple regions along the light emitting direction, and the The curvature is different.

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Abstract

The invention discloses an LED (Light-Emitting Diode) three-dimensional packaging-based vehicle headlamp. The vehicle headlamp comprises a reflecting mirror and an LED three-dimensional packaging light source which is arranged in the reflecting mirror, wherein the LED three-dimensional packaging light source comprises a base; the base is provided with at least two light-emitting areas capable of controlling light independently; each light-emitting area comprises at least one LED chip mounting surface; the LED chip mounting surfaces faces to different directions; an LED chip is arranged on each LED chip mounting surface; a packaging body covers the LED chip; and the inner wall of the reflecting mirror is opposite to each LED chip mounting surface. Since the reflecting mirror and the LED three-dimensional packaging light source are provided and the light source is provided with at least two light-emitting areas capable of controlling light independently, the change of an emergent direction or angle of the headlamp is achieved by controlling lightening of the LEDs of a certain or some light-emitting areas and extinguishing of the LEDs of other light-emitting areas and through combining with the reflecting mirror. The invention also discloses a vehicle illumination method which is capable of improving the safety of a vehicle running at night.

Description

technical field [0001] The present invention relates to an automobile headlight based on LED three-dimensional packaging, in particular to an automobile headlight based on LED three-dimensional packaging with controllable irradiation direction and adjustable projection distance and an automobile headlight using the LED three-dimensional packaging. Automotive lighting method for headlights. Background technique [0002] Most of the existing automobile headlights are metal halide lamps, which have low efficiency and high energy consumption. In recent years, with the development of LED technology, LED car lights have also developed rapidly. LED car lights have the advantages of good monochromaticity, long life, no delay in lighting, high efficiency and low energy consumption, small size and light weight, and green lighting. It has become a hot spot in the automotive lighting market. [0003] Car headlights are mounted on both sides of the head of the car and are used to illum...

Claims

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Application Information

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IPC IPC(8): F21S8/10F21V21/00F21V7/00B60Q1/12B60Q1/08F21W101/10F21Y101/02F21Y115/10
Inventor 李宗涛何志宏李程汤勇
Owner FOSHAN NATIONSTAR OPTOELECTRONICS CO LTD
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