Vehicular LED headlamp

A technology of LED lamp beads and headlights, which is applied in lighting devices, fixed lighting devices, lighting and heating equipment, etc., which can solve the problem of low light utilization rate, poor heat dissipation, and inability to form ideal high-beam or low-beam spots And other issues

Inactive Publication Date: 2012-06-27
重庆科鹰电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low luminous efficiency, high heat generation, short lifespan and low light utilization rate of incandescent silk lamps and halogen light sources, the existing vehicle headlights generally have weak illumination, high heat generation, and short lifespan (such as filaments are easy to burn). blown, easily broken), there is a great potential safety hazard
[0004] Due to the wide application of LEDs and their significant advantages, many people try to use LEDs as vehicle headlights, but due to the unreasonable structural design of LED headlights, the light utilization rate is not high, the light decay is serious, and the heat dissipation is not good. , the light reflected by the reflective bowl cannot reach the designated area of ​​the light distribution screen, and cannot form an ideal high-beam spot or low-beam spot, and cannot meet the national light distribution requirements for vehicle headlights; therefore, it has not been widely used

Method used

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  • Vehicular LED headlamp
  • Vehicular LED headlamp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment one: if figure 1 , Figure 7 The shown vehicle LED headlamp (i.e. low beam) includes a first LED lamp bead 11, a radiator 2, a reflective bowl 3, a glass plate 4, a rear shell 5 and an electronic cooling chip 6, and the first LED lamp bead 11 is located in the reflective bowl 3. The reflective surface of the reflective bowl 3 is a parabolic surface as a reference surface. The paraboloid is divided into several areas, and the curvature and direction of each area are adjusted to form a free-form surface that meets the light distribution requirements of low beams. The light-emitting center of an LED lamp bead 11 is set on the focal point of the reference curved surface, with the mouth of the reflective bowl 3 facing forward as a reference, the setting direction of the first LED lamp bead 11 is that the light-emitting surface is upward, and the light emitted by the first LED lamp bead 11 All or most of the light falls on the reflective surface of the upper half ...

Embodiment 2

[0020] Embodiment two: if figure 2 , Figure 7 The vehicle LED headlamp shown (that is, the first high-beam lamp) includes a second LED lamp bead 12, a radiator 2, a reflective bowl 3, a glass plate 4, a rear shell 5 and an electronic refrigeration chip 6, and the second The LED lamp bead 12 is located in the reflective bowl 3. The reflective surface of the reflective bowl 3 is a paraboloid as a reference curved surface. The paraboloid is divided into several areas, and the curvature and direction of each area are adjusted to meet the high beam light distribution requirements. Curved surface, the luminous center of the second LED lamp bead 12 is set on the focal point of the reference curved surface, and the bowl mouth of the reflective bowl 3 is used as the reference, and the setting direction of the second LED lamp bead 12 is forward on the basis of the light emitting surface. Tilted at 90° (that is, facing the direction of the mouth of the reflective bowl), the light emit...

Embodiment 3

[0021] Embodiment three: as image 3 , Figure 7 The vehicle LED headlamp shown (that is, the second high-beam lamp) includes a second LED lamp bead 12, a radiator 2, a reflective bowl 3, a glass plate 4, a rear shell 5 and an electronic cooling chip 6, and the second The LED lamp bead 12 is located in the reflective bowl 3. The reflective surface of the reflective bowl 3 is a paraboloid as a reference curved surface. The paraboloid is divided into several areas, and the curvature and direction of each area are adjusted to meet the high beam light distribution requirements. Curved surface, the light-emitting center of the second LED lamp bead 12 is set on the focal point of the reference curved surface, with the bowl opening of the reflective bowl 3 as the reference, the setting direction of the second LED lamp bead 12 is backward on the basis of the light-emitting surface Tilted at 90° (that is, facing the direction of the bottom of the reflective bowl), the light emitted by...

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PUM

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Abstract

The invention discloses a vehicular LED headlamp, which comprises an LED bulb, a reflective bowl, a glass sheet and a rear shell, wherein the LED bulb is positioned in the reflective bowl, the LED bulb and the reflective bowl are mounted in the rear shell, the glass sheet is arranged in front of an opening of the reflective bowl, a reflective surface of the reflective bowl employs paraboloid as a reference curved surface, and the luminous center of the LED bulb is positioned at the focus of the reference curved surface. By the aid of the headlamp, the brightness of emergent light of a light source can be improved, high-brightness light spots are formed, and the national requirement on light distribution of vehicular headlamps is met.

Description

technical field [0001] The invention relates to a vehicle headlamp, in particular to an LED headlamp suitable for vehicles (such as motorcycles, automobiles, and electric vehicles). Background technique [0002] LED (Light Emitting Diode) is known as the fourth-generation light source, which has the advantages of long life, high luminous efficiency, and no radiation. The theoretical lifespan of LED is more than 100,000 hours, the luminous efficiency is as high as 90%, and the energy consumption of the same luminous flux is only 8% of that of incandescent lamps, which has obvious advantages of green and low carbon. LEDs have been widely used in the field of lighting all over the world. [0003] At present, the headlights for vehicles mainly use incandescent filament lamps and halogen lamps as light sources. Due to the low luminous efficiency, high heat generation, short lifespan and low light utilization rate of incandescent silk lamps and halogen light sources, the existin...

Claims

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Application Information

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IPC IPC(8): F21S8/10F21V7/06F21V19/00F21V29/00F21W101/10F21Y101/02F21V29/76F21Y115/10
Inventor 代天荣李易邓渝林周幼昆周珍迪
Owner 重庆科鹰电气有限公司
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