CN105782847B - 一种替代式led汽车大灯光源 - Google Patents

一种替代式led汽车大灯光源 Download PDF

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CN105782847B
CN105782847B CN201610215014.4A CN201610215014A CN105782847B CN 105782847 B CN105782847 B CN 105782847B CN 201610215014 A CN201610215014 A CN 201610215014A CN 105782847 B CN105782847 B CN 105782847B
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light source
hollow transparent
red copper
led
heating column
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CN105782847A (zh
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宋国华
江宾
缪建文
黄云霞
周晓铭
孙振满
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Changzhou Claude Automobile Electric Appliance Co Ltd
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Nantong University
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/42—Forced cooling
    • F21S45/43—Forced cooling using gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/16—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts; Snap action mounting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

本发明公开了一种替代式LED汽车大灯光源，散热器上装紫铜导热柱，紫铜导热柱上设置与汽车大灯内卡槽卡合的卡突结构；紫铜导热柱上表面安装有环形的铝基板，铝基板的上方留有焊盘与覆铜线，焊盘上安装有LED光源，覆铜线的两端引出导线，LED光源均匀的排布在中空透明圆柱的下表面中心部位；所述的中空透明圆柱的内表面安装有反光膜，中空透明圆柱内侧表面设置有若干凹孔。本发明结构合理，工作性能好。

Description

一种替代式LED汽车大灯光源
技术领域
本发明涉及一种替代式LED汽车大灯光源。
背景技术
现有的汽车大灯光源一般都是卤素灯，而偏高档的汽车大灯光源大部分为LED灯。传统卤素汽车大灯光源是一根灯丝，它是通过热辐射进行发光，发光角度为360度，为全空间分布，为了形成明暗截止线，需要针对卤素光源的空间光强分布对反射碗进行设计，并且为了防止一部分不经过反射碗出射的光线对最终空间光强分布的影响，卤素汽车大灯光源顶部会有一部分遮光区。由于卤素灯是热辐射发光，在灯丝的不同位置温度不同，中间温度高，两边温度相对较低，所以会出现中间光强强，两边光强弱。相比于传统卤素光源，LED光源具有光效高、寿命长、无污染等优点。但是由于LED光源为单面光源，发出的光型一般是朗伯型分布，不能够直接用LED光源替换传统卤素光源，否则所产生的光型不会满足国家车用照明近光灯的标准，甚至不会出现配光要求的明暗截止线，所以通常需要针对选用的LED光源对反光碗进行重新设计，并且现有的LED汽车大灯的设计绝大部分都是针对LED的空间光强分布来设计光学系统，这样不仅造成了生产成本的增加，并且对现有使用卤素汽车大灯的车辆，就无法更换成LED汽车大灯。因此急需要设计一种替代式LED汽车大灯光源。
发明内容
本发明的目的在于提供一种结构合理，工作性能好的替代式LED汽车大灯光源。
本发明的技术解决方案是：
一种替代式LED汽车大灯光源，其特征是：包括散热器，散热器内腔装有散热风扇，散热器上装紫铜导热柱，紫铜导热柱的外侧表面设置用于放置导线的长槽，紫铜导热柱上设置与汽车大灯内卡槽卡合的卡突结构；紫铜导热柱上表面安装有环形的铝基板，所述的铝基板下表面通过导热胶与紫铜导热柱相连，铝基板的上方留有焊盘与覆铜线，焊盘上安装有LED光源，覆铜线的两端引出导线，并且导线安装在紫铜导热柱外侧的长槽内，所述的LED光源形状为圆形， LED光源均匀的排布在中空透明圆柱的下表面中心部位；所述的中空透明圆柱的内表面安装有反光膜，所述的反光膜能够将部分从中空透明圆柱内侧表面折射出的光线反射回中空透明圆柱内，提高光线利用率；中空透明圆柱内侧表面设置有若干凹孔，所述的凹孔径向上的分布为中间凹孔的密度最大，凹孔密度往两侧逐步递减，横向上凹孔的密度一致，凹孔的表面粗糙；平行于中空透明圆柱高的方向为径向，垂直于中空透明圆柱高的方向为横向。
所述LED光源的个数为15个，功率为每个1W。
所述的中空透明圆柱下表面外侧下端设有宽度为2mm的反光膜，避免LED光源发出的大角度的光线从中空透明圆柱外侧折射出影响替代式LED汽车大灯光源的空间光强分布。
所述的中空透明圆柱的上表面有反光膜，它能够避免光线从中空透明圆柱的上表面折射出影响替代式LED汽车大灯光源的空间光强分布，并且它能够将光线重新折射到透明圆柱内，提高光线的利用率。
所述卡突结构包括上、下固定圆环，上、下固定圆环中夹装卡突，上、下固定圆环与紫铜导热柱固定连接。
本发明的有益效果是：这种替代式LED汽车大灯光源，能够直接替换传统卤素汽车大灯光源，不用重新对反射碗进行设计，通过对点的密度与大小的分布能够改变空间光强分布，采用多个功率小的光源取代单独的大功率光源，分散热量的分布，提高车灯的散热能力。
附图说明
下面结合附图和实施例对本发明作进一步说明。
图1是本发明一个实施例的结构示意图。
图2是图1实施例的主视图。
图3是图1实施例的俯视图。
具体实施方式
一种替代式LED汽车大灯光源，包括散热器1，散热器内腔装有散热风扇，散热器上装紫铜导热柱4，紫铜导热柱的外侧表面设置用于放置导线的长槽，紫铜导热柱上设置与汽车大灯内卡槽卡合的卡突结构2；紫铜导热柱上表面安装有环形的铝基板，所述的铝基板下表面通过导热胶与紫铜导热柱相连，铝基板的上方留有焊盘与覆铜线，焊盘上安装有LED光源5，覆铜线的两端引出导线，并且导线安装在紫铜导热柱外侧的长槽内，所述的LED光源形状为圆形， LED光源均匀的排布在中空透明圆柱6的下表面中心部位；所述的中空透明圆柱的内表面安装有反光膜7，所述的反光膜能够将部分从中空透明圆柱内侧表面折射出的光线反射回中空透明圆柱内，提高光线利用率；中空透明圆柱内侧表面设置有若干凹孔8，所述的凹孔径向上的分布为中间凹孔的密度最大，凹孔密度往两侧逐步递减，横向上凹孔的密度一致，并且所有的凹孔在几何结构与几何尺寸上是一致的，LED光源发出的光线折射进入中空透明圆柱，由于中空透明圆柱的折射率是大于空气的折射率，所以光线会发生全反射，当光线经过凹孔8，破坏了全反射，由于凹孔8的表面是粗糙的，经过凹孔8光线发生漫反射，部分漫反射的光线从中空透明圆柱的外表面折射出来，由于凹孔的密度从中间到两端逐步递减，发出的光线在空间上的光强分布为中间强，两端弱，控制凹孔8在中空透明圆柱内侧表面不同位置的密度排布，能够使替代式LED汽车大灯光源的空间光强分布与卤素汽车大灯光源的空间光强分布基本一致。平行于中空透明圆柱高的方向为径向，垂直于中空透明圆柱高的方向为横向。
所述LED光源的个数为15个，功率为每个1W。
所述的中空透明圆柱下表面外侧下端设有宽度为2mm的反光膜，避免LED光源发出的大角度的光线从中空透明圆柱外侧折射出影响替代式LED汽车大灯光源的空间光强分布，所述的中空透明圆柱的上表面有反光膜9，它能够避免光线从中空透明圆柱的上表面折射出影响替代式LED汽车大灯光源的空间光强分布，并且它能够将光线重新折射到透明圆柱内，提高光线的利用率。
所述卡突结构包括上、下固定圆环3，上、下固定圆环中夹装卡突，上、下固定圆环与紫铜导热柱固定连接。

Claims (4)

1.一种替代式LED汽车大灯光源，其特征是：包括散热器，散热器内腔装有散热风扇，散热器上装紫铜导热柱，紫铜导热柱的外侧表面设置用于放置导线的长槽，紫铜导热柱上设置与汽车大灯内卡槽卡合的卡突结构；紫铜导热柱上表面安装有环形的铝基板，所述的铝基板下表面通过导热胶与紫铜导热柱相连，铝基板的上方留有焊盘与覆铜线，焊盘上安装有LED光源，覆铜线的两端引出导线，并且导线安装在紫铜导热柱外侧的长槽内，所述的LED光源形状为圆形，LED光源均匀的排布在中空透明圆柱的下表面中心部位；所述的中空透明圆柱的内表面安装有反光膜，所述的反光膜能够将部分从中空透明圆柱内侧表面折射出的光线反射回中空透明圆柱内，提高光线利用率；中空透明圆柱内侧表面设置有若干凹孔，所述的凹孔径向上的分布为中间凹孔的密度最大，凹孔密度往两侧逐步递减，横向上凹孔的密度一致，凹孔的表面粗糙；平行于中空透明圆柱高的方向为径向，垂直于中空透明圆柱高的方向为横向；
所述的中空透明圆柱下表面外侧下端设有宽度为2mm的反光膜，避免LED光源发出的大角度的光线从中空透明圆柱外侧折射出影响替代式LED汽车大灯光源的空间光强分布。
2.根据权利要求1所述的一种替代式LED汽车大灯光源，其特征是：所述LED光源的个数为15个，功率为每个1W。
3.根据权利要求1或2所述的一种替代式LED汽车大灯光源，其特征是：所述的中空透明圆柱的上表面有反光膜，它能够避免光线从中空透明圆柱的上表面折射出影响替代式LED汽车大灯光源的空间光强分布，并且它能够将光线重新折射到透明圆柱内，提高光线的利用率。
4.根据权利要求1或2所述的一种替代式LED汽车大灯光源，其特征是：所述卡突结构包括上、下固定圆环，上、下固定圆环中夹装卡突，上、下固定圆环与紫铜导热柱固定连接。
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CN101858548A (zh) * 2010-03-23 2010-10-13 重庆科鹰电气有限公司 Led发光单元及所形成的摩托车led前照灯光源
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CN105042510A (zh) * 2015-07-31 2015-11-11 马瑞利汽车零部件(芜湖)有限公司 一种led光学透镜
CN205079172U (zh) * 2015-10-26 2016-03-09 陈喜平 一种类钨丝led灯用透镜及其类钨丝led灯

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