CN103597592B - 液冷led照明灯 - Google Patents
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Abstract
一种液冷LED照明灯,包括灯头(1),灯芯(2)和照明灯壳(3);所述照明灯壳(3)罩在灯芯(2)的外围且照明灯壳(3)的空腔内填充有导热用硅油(4),所述灯芯(2)的一端浸没在导热用硅油(4)内。所述灯芯(2)的另一端,所述照明灯壳(3)与灯头(2)密封连接。该液冷LED照明灯结构简单,散热性能好。
Description
技术领域
本发明涉及LED照明领域,特别是涉及一种液冷LED照明灯。
背景技术
在当前全球能源短缺的忧虑再度升高的背景下,节约能源是我们未来面临的重要的问题。LED被称为第四代照明光源或绿色光源,具有节能、环保、寿命长、体积小等特点,可以广泛应用于各种指示、显示、装饰、背光源、普通照明和城市夜景等领域。在照明领域,LED发光产品的应用正吸引着世人的目光,LED作为一种新型的绿色光源产品,必然是未来发展的趋势,二十一世纪将进入以LED为代表的新型照明光源时代。
LED发光芯片通过电子复合而发光,当在小电流的情况下,产生热量很小,但在大功率的LED照明灯中,特别是照明领域的应用,需要较大的电流,会产生大量的热量,使工作温度升高。而影响LED发光芯片的主要因素就是温度(P-N结的工作温度),P-N结工作温度一般不要高于120度,最好在100度左右,P-N结的温度每上升10度,光通量就会衰弱减1%,发光的主波长就会漂移lnm,寿命也随着降低。因此,散热是LED照明灯所必须考虑的问题。
另外,LED发光芯片的体积非常的小,是点发光,具有指向性高(LED发光芯片发出的光是直线,发散性不好),这样就直接导致照射角度比较小,偏离该角度后光线迅速减弱,无法适应大面积照明的需要。为解决照射角度比较小的问题,现有技术中釆用灯管型LED照明,其灯具排列过密,设计成本过高及散热效果欠佳,失去节能效果。
发明内容
本发明的目的在于提供一种液冷LED照明灯,其具有散热性能好和结构简单的特点。
为实现本发明目的而提供的液冷LED照明灯,其特征在于:包括灯头,灯芯和照明灯壳;所述照明灯壳罩在灯芯的外围且照明灯壳的空腔内填充有导热用硅油,所述灯芯的一端浸没在导热用硅油内;所述灯芯的另一端,所述照明灯壳与灯头密封连接。
上述目的还可以通过下述技术方案进一步完善。
所述硅油的粘度系数为5-800万厘帕斯卡·秒。
所述硅油的粘度系数为5-5000厘帕斯卡·秒。
所述硅油包括甲基硅油、乙基硅油、苯基硅油、甲基含氢硅油、甲基苯基硅油、甲基氯苯基硅油、甲基乙氧基硅油、甲基三氟丙基硅油、甲基乙烯基硅油、甲基羟基硅油、乙基含氢硅油、羟基含氢硅油和含氰硅油。
本发明的有益效果是:本发明的液冷LED照明灯,具有:
1、结构简单,易于生产制造;
2、散热性能好,节能的特点。
附图说明
图1是本发明实施例一的液冷LED照明灯的结构示意图;
图2是本发明实施例一的液冷LED照明灯的灯芯的示意图;
图3是本发明实施例.二的液冷LED照明灯的剖视图;
图4是本发明实施例.二的液冷LED照明灯的大角度LED光源的结构示意图;
图5是本发明实施例.二的液冷LED照明灯的导电支架的示意图;
图6是本发明实施例.二的液冷LED照明灯的导电支架的剖视图;
图7是本发明实施例.二的液冷LED照明灯的大角度LED光源的LED发光芯片的安装示意图;
图8是本发明实施例.二的液冷LED照明灯的大角度LED光源的LED发光芯片的安装俯视图;
图9-12是本发明实施例二的液冷LED照明灯的灯芯组装示意图;
图13-17是本发明实施例二的液冷LED照明灯的组装示意图。
其中,
1灯头:
2灯芯:
21多棱灯柱,22连接件;
6大角度LED光源:
61导电支架:
611正极支撑体:6111支撑圆柱,6112直棱柱形头部;
612负极支撑座:6121直棱柱形安装柱:61221透镜安装槽;
6122定位圆柱,6123螺纹柱,6124圆柱形中空通道;
62透镜,63焊线;
7金属管;8灯芯柱;
3照明灯壳;4硅油;5驱动电源容纳体。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对本发明的液冷LED照明灯进行进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限定本发明。
实施例一
如图1所示,一种液冷LED照明灯,包括灯头1,灯芯1和照明灯壳3;所述照明灯壳3罩在灯芯2的外围且照明灯壳3的空腔内填充有导热用硅油4,所述灯芯2的一端浸没在导热用硅油4内。所述灯芯2的另一端,所述照明灯壳3与灯头1密封连接。
优选的,所述硅油的粘度系数为5-800万厘帕斯卡·秒。
优选的,所述硅油的粘度系数为5-5000厘帕斯卡·秒。
优选的,所述硅油包括甲基硅油,乙基硅油,苯基硅油,甲基含氢硅油,甲基苯基硅油,甲基氯苯基硅油,甲基乙氧基硅油,甲基三氟丙基硅油,甲基乙烯基硅油,甲基羟基硅油,乙基含氢硅油,羟基含氢硅油和含氰硅油。
优选的,如图2所示,所述灯芯2包括多棱灯柱21和连接件22;所述多棱灯柱21是铝基电路板围成的多棱灯柱;在所述多棱灯柱21—端的顶面和每个侧面阵列有多颗LED发光芯片;所述多棱灯柱另一端与连接件22连接;所述连接件22与灯头1密封连接。铝基电路板具有卓越的导热性,那么多棱灯柱导热性很好。多颗LED发光芯片产生的热量传导至的多棱灯柱,因为硅油距离多棱灯柱的远近不同,导致温度不同形成对流,对流将多棱灯柱的热量带走;同时照明灯壳与外界空气的接触面很大,也有利于散热。
优选的,所述多棱灯柱21是空心的多棱灯柱,在所述多棱灯柱每个侧面上设置有多个孔。多颗LED发光芯片产生的热量传导至的多棱灯柱,导致多棱灯柱的外侧和空心部分的硅油的温度不同,通过多个孔实现多棱灯柱的外侧和空心部分的硅油的对流,加快散热的速度。
优选的,所述多棱灯柱21部分或全部浸没在所述硅油4内。
实施例二
如图3所示,作为一种可实施方式,本发明实施例的液冷LED照明灯,包括灯头1,灯芯2,照明灯壳3,导热用硅油4和驱动电源容纳体5;其中,所述照明灯壳3罩在灯芯2的外围且照明灯壳3的空腔内填充有导热用硅油4;所述灯芯2的一端浸没在导热用硅油4内,灯芯2的另一端通过驱动电源容纳体5与灯头1相连;所述照明灯壳3与驱动电源容纳体5固定连接。
优选的,所述硅油的粘度系数为5-800万厘帕斯卡·秒。
优选的,所述硅油的粘度系数为5-5000厘帕斯卡·秒。
优选的,所述硅油包括甲基硅油、乙基硅油、苯基硅油、甲基含氢硅油、甲基苯基硅油、甲基氯苯基硅油、甲基乙氧基硅油、甲基三氟丙基硅油、甲基乙婦基硅油、甲基羟基硅油、乙基含氢硅油、羟基含氢硅油和含氰硅油。
所述灯芯2包括一大角度LED光源6,如图4所示,包括在导电支架61、透镜62、LED发光芯片和焊线63。
如图5和图6所示,导电支架61包括正极支撑体611和负极支撑座612,正极支撑体611和负极支撑座612之间填充有绝缘导热塑料,即正极支撑体611和负极支撑座612分别是导电的,且正极支撑体611与负极支撑座612之间是绝缘导热的。正极支撑体611与电路的正极相连,负极支撑座612与电路的负极相连。
其中,正极支撑体611包括支撑圆柱6111和设在支撑圆柱一端的直棱柱形头部6112,其中,头部6112的直棱柱的底面是正八边形。直棱柱形头部6112的半径大于支撑圆柱6111的半径,支撑圆柱6111的长度大于负极支撑座612的长度。
负极支撑座612的从上到下依次设有直棱柱形安装柱6121,定位圆柱6122(其作用在下文描述)和螺纹柱6123(其作用在下文描述)。其中,安装柱6121的直棱柱的底面是正八边形;螺纹柱6123的半径最小,直棱柱形安装柱6121的半径居中,定位圆柱6122的半径最大。负极支撑座612设有一个圆柱形中空通道6124,该中空通道6124纵向贯穿负极支撑座612的中心处,且中空通道6124的半径比支撑圆柱6111的半径略大,且比直棱柱形头部6112的半径小。其中,在定位圆柱6122的上表面设有环形的透镜安装槽61221,透镜62固定在透镜安装槽61221内。
正极支撑体611的支撑圆柱6111穿过中空通道6124,通过直棱柱形头部6112卡在直棱柱形安装柱6121的上方,支撑圆柱6111从负极支撑座612下端伸出。
如图7和图8所示,在直棱柱形头部6112的上表面和直棱柱形安装柱6121的各个侧面上固定有LED发光芯片。LED发光芯片的正(负)极通过焊线63分别与正极支撑体611(负极支撑座612)相连。在固定LED发光芯片和使用大角度LED光源时,定位圆柱6122提供一个可以施加扭力的区域,方便装夹和安装。
本实施例的大角度LED光源封装出大于270度照射角度球形发光的LED光源,其发光效果与传统的白炽灯泡近似,可以替代传统白炽灯;但比传统白炽灯节能百分之九十。现有的包括位于多棱面的发光芯片的LED光源,由于只有侧面的发光芯片,形成蝴蝶状光斑。本实施例的大角度LED光源具有位于直棱柱形头部6112的上表面的LED发光芯片和多棱面的LED发光芯片,使得其球形发光。
作为一种优选的实施方式,在透镜安装槽61221内增加密封胶,釆用机械压合的方式安装透镜,从而实现大角度LED光源的高度密封性。将机械压合应用到LED领域的密封,大大提高了密封的效果。
作为一种优选的实施方式,LED发光芯片釆用蓝光芯片,且在透镜62中加入激发白光用的荧光粉,荧光粉所占比例不超过10%。当蓝光穿过透镜时,被激发出白光。将荧光粉加入到透镜62中以用来激发白光,减少了在蓝光LED发光芯片表面点荧光胶的步骤,从而大幅提高了生产效率和降低了次品率,使得批次的色坐标误差极小,且避免了因荧光粉的光衰,蓝光LED发光芯片的蓝光无法被有效激发成白光的弊端。
作为一种优选的实施方式,通过带件注塑组装正极支撑体611和负极支撑座612。带件注塑是一种塑料注塑的工艺,是指在两个以上零件之间注塑塑料,是多个零件形成一个整体的注塑加工手段。
作为一种优选的实施方式,正极支撑体611和负极支撑座612釆用金属铜作为原料加工而成,其表面镀纯良或纯金,用来增加其导电性能。
作为一种可实施方式,直棱柱形头部6112的直棱柱可以是3-10棱中的任意一种。
所述灯芯2包括上述大角度LED光源6,还包括金属管7和灯芯柱8;所述金属管7和灯芯柱8之间是绝缘的;所述金属管7和所述正极支撑体611相连,所述灯芯柱8和所述负极支撑座612相连。
灯芯柱8—端的内壁设有螺纹,另一端的外侧灯芯尾部设有灯芯凹槽。金属管7与支撑圆柱6111套接,灯芯柱8通过螺纹与涂有导热密封胶的螺纹柱6123紧密连接,金属管7与灯芯柱8之间填充有导热密封胶,即金属管7与电路的正极相连,灯芯柱8与电路的负极相连。灯芯尾部与照明灯壳的瓶口压紧密封,这样导热用硅油4被密封在照明灯壳3内。
灯芯的正负极与驱动电源的正负极相连,驱动电源的正负极与灯头1的正负极相连。
液冷LED照明灯的制造方法如下:
第一步:如图9所示,釆用压紧缩径的方法金属管7套接在支撑圆柱6111的外侧;即金属管7和正极支撑体611形成正极;
第二步:如图10和图11所示,灯芯柱8通过螺纹与涂有导热密封胶的螺纹柱6123紧密连接,在金属管7和灯芯柱8之间填充导热密封胶;即灯芯柱8和负极支撑座612形成负极,且正极和负极之间是绝缘导热的;
第三步:如图12所示,在灯芯2凹槽内用密封胶打底;
至此,灯芯2组装完毕;
第四步:如图13所示,从照明灯壳3的瓶口填充一定量的高导热的硅油;
第五步:如图14和15所示,将灯芯2放入照明灯壳3,用封口器将灯芯凹槽与照明灯壳3的瓶口压紧密封,这样导热用硅油被密封在照明灯壳3内;此时大角度LED光源完全浸没在高导热的硅油内,由于透镜62釆用机械压合的方式进行安装,因此大角度LED光源不会有硅油进入;
至此,完成灯芯2与照明灯壳3的组装;
第六步:如图16所示,驱动电源容纳体5与照明灯壳3用卡口的方式连接,灯芯2的正负极与驱动电源的正负极相连;
第七步:如图17所示,驱动电源容纳体5与灯头1相连,驱动电源的正负极与灯头1的正负极相连。
液冷LED照明灯组装完毕。
液冷LED照明灯内包括的LED发光芯片所产生的热量是通过如下途径散热的:
对于位于直棱柱形安装柱的各个侧面的LED发光芯片而言,其产生的热量通过直棱柱形安装柱传递到定位圆柱,通过定位圆柱传递到导热用硅油,从而实现了散热;对于位于直棱柱形头部的上表面的LED发光芯片而言,其产生的热量一部分通过正极支撑体和长长的金属管散热;一部分通过直棱柱形安装柱传递到定位圆柱,通过定位圆柱传递到导热用硅油,从而实现了散热。
本发明的液冷LED照明灯,具有结构简单,易于生产制造;照射角度大、散热性能好,节能的特点。
最后应当说明的是,很显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型。
Claims (5)
1.一种液冷LED照明灯,其特征在于:
包括灯头(1),灯芯(2)和照明灯壳(3);所述照明灯壳(3)罩在灯芯(2)的外围且照明灯壳(3)的空腔内填充有导热用硅油(4),所述灯芯(2)的一端浸没在导热用硅油(4)内;所述灯芯(2)的另一端,所述照明灯壳(3)与灯头(1)密封连接;
所述灯芯(1)包括多棱灯柱(21)和连接件(22);所述多棱灯柱(21)是铝基电路板围成的多棱灯柱;在所述多棱灯柱(21)一端的顶面和每个侧面阵列有多颗LED发光芯片;所述多棱灯柱另一端与连接件(22)连接;所述连接件(22)与灯头(1)密封连接;所述多棱灯柱(21)是空心的多棱灯柱,在所述多棱灯柱每个侧面上设置有多个孔。
2.根据权利要求1所述的液冷LED照明灯,其特征在于:
所述硅油的粘度系数为5-800万厘帕斯卡·秒。
3.根据权利要求1所述的液冷LED照明灯,其特征在于:
所述硅油的粘度系数为5-5000厘帕斯卡·秒。
4.根据权利要求1所述的液冷LED照明灯,其特征在于:
所述硅油包括甲基硅油,乙基硅油,苯基硅油,甲基含氢硅油,甲基苯基硅油,甲基氯苯基硅油,甲基乙氧基硅油,甲基三氟丙基硅油,甲基乙烯基硅油,甲基羟基硅油,乙基含氢硅油,羟基含氢硅油和含氰硅油。
5.根据权利要求1所述的液冷LED照明灯,其特征在于:
所述多棱灯柱(21)部分或全部浸没在所述硅油(4)内。
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