CN2826706Y - 单颗和集群封装的功率led定向光源 - Google Patents

单颗和集群封装的功率led定向光源 Download PDF

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Publication number
CN2826706Y
CN2826706Y CNU2005200420818U CN200520042081U CN2826706Y CN 2826706 Y CN2826706 Y CN 2826706Y CN U2005200420818 U CNU2005200420818 U CN U2005200420818U CN 200520042081 U CN200520042081 U CN 200520042081U CN 2826706 Y CN2826706 Y CN 2826706Y
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led chips
power led
directional light
led
perhaps
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张龙宝
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/4805Shape
    • H01L2224/4809Loop shape
    • H01L2224/48091Arched
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L2224/00Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
    • H01L2224/01Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
    • H01L2224/42Wire connectors; Manufacturing methods related thereto
    • H01L2224/47Structure, shape, material or disposition of the wire connectors after the connecting process
    • H01L2224/48Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
    • H01L2224/484Connecting portions
    • H01L2224/48463Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond
    • H01L2224/48465Connecting portions the connecting portion on the bonding area of the semiconductor or solid-state body being a ball bond the other connecting portion not on the bonding area being a wedge bond, i.e. ball-to-wedge, regular stitch

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Abstract

本实用新型提供一种单颗和集群封装的功率LED定向光源,在一带有印刷线路板的金属铝基板上,固定抛物面反射体,在抛物面反射体的焦点处,用导热绝缘胶或导电银胶将一颗或多颗功率LED芯片粘结在金属铝基板上,用金丝连接LED的P、N极并焊接在印刷丝路板上,在LED芯片上方,罩一半圆形透明小帽,或者设置一个带有凹形半球空腔的凸镜,或者设置一个全反射的中心透镜,LED芯片与其上方的凹形半球空腔之间,或者与全反射的中心透镜之间,填满全透明软胶,抛物面反射体是在一球形透明塑胶体下面四周,挖出一三角形凹槽,透明塑胶体的顶部呈凸镜形状,优点是,散热效果好,光能的搜集率高,定向性能强。

Description

单颗和集群封装的功率LED定向光源
技术领域
本实用新型涉及一种单颗和和集群封装的功率LED定向光源。
背景技术
目前,单颗LED芯片的工作电流在不断增大,其光亮度也在不断提高,但是,增大LED芯片功率,却带来几个难以解决的技术问题,第一是要解决散热问题,即热传导问题;第二是要解决焊接LED芯片P、N极的金丝容易断裂;第三是尽量减小光能量损耗,尽量提高光能的搜集率,将全部光能射向特定方向。
发明内容
为解决前述要增大LED光源功率,进而提高其光亮度所带来的问题,本实用新型提供一种单颗和和集群封装的功率LED定向光源,其方案是:在一带有印刷线路板的金属铝基板上,或在金属铜、或陶瓷等热传导好的基板上,固定抛物面反射体,在抛物面反射体的的焦点处,用导热绝缘胶或导电银胶将一颗或多颗功率LED芯片粘结在金属铝基板上,用金丝连接LED的P、N极并焊接在印刷线路板上,在LED芯片上方:
a,罩一半圆形透明小帽,或者,
b,设置一个带有凹形半球空腔的凸镜,或者,
c,在全反射抛物面下设置一个菲乃尔中心透镜。
所述抛物面反射体是:
a,在一球形透明塑胶体下面四周,挖出一三角形凹槽,凹槽
一边垂直,另一边呈抛物面形,透明塑胶体的顶部呈凸镜形状。
b,一个碗状抛物面反射体;
c,一碗状抛物面全反射体自下向上,呈阶梯形状。
LED芯片与凹形半球空腔之间,或者与全反射的中心透镜之间,或者与半圆形小帽之间,填满全透明软胶。
本实用新型的优点是,散热效果好,光能的搜集率高达90%,定向性能强。
附图说明
附图1是本实用新型的第一实施例。
附图2是第二实施例。
附图3是第三实施例。
具体实施方式
请参阅附图1所示,在带有印刷线路板的金属铝基板2上,固定抛物面反射体6,在抛物面反射体6的的焦点处,用导热绝缘胶或导电银胶将一颗或多颗功率LED芯片1粘结在金属铝基板2上,用金丝连接LED的P、N极并焊接在印刷丝路板上,在LED芯片1上方,罩一半圆形透明小帽5,在LED芯片1与半圆形小帽5之间,填满全透明软胶3,使焊接LED芯片P、N极的金丝,不会因热效应而断裂;LED芯片1上方罩的透明小帽5,可涂以黄色萤光粉,当LED芯片发出兰光时,激发小帽5中的黄色萤光粉,会产生白光,可作为照明光源。图中示出的抛物面反射体6,是在一球形透明塑胶体4下面四周,挖出一三角形凹槽8,凹槽8一边垂直,另一边呈抛物面形,对透明塑胶体4而言,形成一抛物面反射体6,塑胶体4的顶部呈凸镜形状7。
请参阅附图2所示,在LED芯片1的上方,设置有一个带有凹形半球空腔的凸镜9,在LED芯片1与一个带有凹形半球空腔的凸镜9之间,填满软胶3,抛物面反射体是一个碗状抛物面反射体10,其反射面镀有铝反射膜。
请参阅附图3所示,在LED芯片1的上方,设置有一个菲乃尔中心透镜11,在LED芯片1与菲乃尔中心透镜11之间,填满全透明软胶3,抛物面反射体是一个碗状抛物面反射体,其反射面自下向上,有数个阶梯12。
由于LED芯片焊接在带有印刷线路板的基板2上,而基板2不但具有很大的散热截面积,而且是传热效果特好的铝材或铜材,所以,对解决LED芯片电流在350-500ma大电流功率,其散散热效果是非常好的,由于LED芯片1与其上方的透镜之间,填满全透明软胶,所以热应力不会使连接芯片P、N极的金丝断裂,几种抛物面反射体,以及在LED芯片上方的几种透镜,不但具有很高的光能搜集率,其定向反射效果也非常好。

Claims (3)

1.一种单颗和集群封装的功率LED定向光源,其特征在于:在一带有印刷线路板的金属铝基板上,固定抛物面反射体,在抛物面反射体的的焦点处,用导热绝缘胶或导电银胶将一颗或多颗功率LED芯片粘结在金属铝基板上,用金丝连接LED的P、N极并焊接在印刷丝路板上,在LED芯片上方:
a,罩一半圆形透明小帽,或者,
b,设置一个带有凹形半球空腔的凸镜,或者,
c,在一个全反射抛物面下设置一个中心透镜。
2.按权利要求1所述的单颗和集群封装的功率LED定向光源,其特征在于:所述抛物面反射体是:
a,在一球形透明塑胶体下面四周,挖出一三角形凹槽全反射腔,凹槽一边垂直,另一边呈抛物面形,透明塑胶体的顶部呈凸镜形状。
b,一个碗状抛物面全反射体;
c,一碗状抛物面全反射体自下向上,呈阶梯形状。
3.按权利要求1所述的单颗和集群封装的功率LED定向光源,其特征在于:LED芯片与凹形半球空腔之间,或者与全反射的中心透镜之间,或者与半圆形小帽之间,填满全透明软胶。
CNU2005200420818U 2005-06-01 2005-06-01 单颗和集群封装的功率led定向光源 Expired - Fee Related CN2826706Y (zh)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008148342A1 (fr) * 2007-06-05 2008-12-11 Jianping Zhu Illuminateur doté d'une source lumineuse plane émettant une lumière blanche
CN101650001B (zh) * 2008-08-11 2011-04-06 韩建华 一种球面封装的led
CN102226993A (zh) * 2011-01-04 2011-10-26 山东景盛同茂新能源技术有限公司 一种大功率led路灯光源的封装结构及工艺
CN102367938A (zh) * 2011-11-29 2012-03-07 常州通宝光电制造有限公司 汽车用led照明灯具
CN102748691A (zh) * 2012-07-16 2012-10-24 毛振权 Led机动车远光前照灯
CN104633493A (zh) * 2013-11-14 2015-05-20 晶元光电股份有限公司 发光装置

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008148342A1 (fr) * 2007-06-05 2008-12-11 Jianping Zhu Illuminateur doté d'une source lumineuse plane émettant une lumière blanche
CN101650001B (zh) * 2008-08-11 2011-04-06 韩建华 一种球面封装的led
CN102226993A (zh) * 2011-01-04 2011-10-26 山东景盛同茂新能源技术有限公司 一种大功率led路灯光源的封装结构及工艺
CN102367938A (zh) * 2011-11-29 2012-03-07 常州通宝光电制造有限公司 汽车用led照明灯具
CN102748691A (zh) * 2012-07-16 2012-10-24 毛振权 Led机动车远光前照灯
CN102748691B (zh) * 2012-07-16 2017-04-19 毛振权 Led机动车远光前照灯
CN104633493A (zh) * 2013-11-14 2015-05-20 晶元光电股份有限公司 发光装置
CN104633493B (zh) * 2013-11-14 2018-05-25 晶元光电股份有限公司 发光装置

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