CN101109502B - 具有强化散热的高功率发光二极管电灯 - Google Patents

具有强化散热的高功率发光二极管电灯 Download PDF

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CN101109502B
CN101109502B CN2007101368735A CN200710136873A CN101109502B CN 101109502 B CN101109502 B CN 101109502B CN 2007101368735 A CN2007101368735 A CN 2007101368735A CN 200710136873 A CN200710136873 A CN 200710136873A CN 101109502 B CN101109502 B CN 101109502B
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江昆渊
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LIQUIDLEDS LIGHTING CO Ltd
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Abstract

一种高功率LED电灯，包括具有充填液体的腔室的容器，提供高功率LED源光穿透该液体的光源模块，轴向导热器，后者具有第一部分邻近该光源模块与第二部分在该液体中沿着该腔室的轴向延伸至远离该光源模块，将热从该光源模块透过该液体传递到该容器。

Description

具有强化散热的高功率发光二极管电灯
技术领域
本发明涉及一种电灯，尤其涉及一种照明用途的高功率LED电灯。
背景技术
LED因为寿命长、省电及无废弃物造成环境污染等环保优点，已广泛用于装饰灯(例如水底灯)及指示灯(例如交通号志灯)，但由于单位输出功率产生的发光亮度不足、散热效率不佳及照明角度不足等问题，使其不适于照明用途。随着白光LED的改良，单位输出功率产生的发光亮度渐提升，解决了亮度不足的问题，现在具有发光亮度超越传统白炽热灯泡发光亮度(30lm/W)的白光LED已商品化，要产生超越日光灯发光亮度(100lm/W)的商品化白光LED也指日可待，因此散热效率不佳及照明角度不足是目前LED用于照明的主要问题。
图1是典型的低功率LED 100，包括环氧树脂透光镜片110覆盖半导体晶粒102，正极脚106与负极脚108经金线104连接半导体晶粒102。由于低功率LED 100在工作时产生的热量少，经正极脚106与负极脚108将热传导至PCB(图中未示出)上的铜箔达到的热传导扩散已足够帮助LED 100散热，因此不需考虑散热的问题。低功率LED 100主要用于装饰灯及指示灯，消耗功率小于0.3至0.4W。图2是现有的低功率LED电灯112，包括灯泡标准接头120与外壳122接合，PCB 116在外壳122中，数个低功率LED100固定在PCB 116上，灌胶层114填充在外壳122中以保护PCB116及低功率LED 100的接脚，电源转换驱动模块118连接在PCB116与灯泡标准接头120之间以驱动低功率LED 100。每一低功率LED 100产生的热经PCB 116的铜箔传导扩散，不需额外的散热器。外壳122为金属或塑料，当外壳122为金属时，大多因为结构强度需求，而非导热或散热需求。
图3是已知的高功率LED 124，正极脚138与负极脚140经金线132与133连接半导体晶粒130，借封装树脂128固定在散热垫片136上，此结构容置于塑料外壳134中，光学镜片126覆盖在封装树脂128上与塑料外壳134嵌合。高功率LED 124的消耗功率大于0.3W，由于在工作时产生的热量高，因此使用上需考虑散热以避免过热损坏。图4是一种帮助高功率LED 124散热的结构142，包括散热垫片136与散热鳍片146贴合金属心塑料电路板(MCPCB)144。高功率LED 124工作时产生的热经散热垫片136传导至MCPCB 144，再传导至散热鳍片146，借空气的自然对流将热散逸至空气中。散热垫片136具良导热性，材料有金属、石墨、碳素纤维、陶瓷或复合材料。图5是现有的前散热式高功率LED电灯148，包括高导热金属制的反射杯150，外部具环状的散热鳍片158，玻璃或塑料制的光学镜片152固定在反射杯150的杯口，高功率LED 124在反射杯150底部，电源转换驱动模块154连接在高功率LED 124与灯泡标准接头156之间。高功率LED 124产生的光被反射杯150反射穿过光学镜片152，其产生的热经反射杯150传导至散热鳍片158借空气的自然对流散逸。虽然散热鳍片158增加对流散热的面积，但是热传导路径长，高功率LED124产生的热无法迅速传导至散热鳍片158，易导致高功率LED124过热。为解决过热问题，发展出背散热式灯体结构如图6所示，背散热式高功率LED电灯160包括光学镜片162覆盖在高功率LED 124上，热导管164连接在高功率LED 124与电源转换驱动模块168之间，热导管164有许多散热鳍片166，电源转换驱动模块168有一对电源输入端170。高功率LED 124工作时产生的热直接进入热导管164，再由散热鳍片166借空气的自然对流散热。由于热传导路径短，热导管164能迅速将高功率LED 124产生的热经散热鳍片166发散出去，不过此背散热式电灯160须在良好空气流通的环境才能使散热鳍片166达到较佳的自然对流散热效果。当背散热式高功率LED电灯160用于照明时，例如嵌入式或是顶式灯具，装设的环境不具有良好空气流通，因而导致散热效果大幅下降。图7是背散热式高功率LED电灯160用于嵌入式灯具的示意图，高功率LED电灯160位于灯罩172中，灯罩172介于楼板174与天花板176之间。由于高功率LED电灯160包覆在灯罩172中，因此空气对流受限于灯罩172，散热效果有限。图8是背散热式高功率LED电灯160用于是顶式灯具的示意图，高功率LED电灯160固定在楼板174与天花板176之间，因此自然对流的散热效果受限于楼板174与天花板176之间的狭小空间。当顶式灯具的灯盏数增加，累积的温升造成散热效果下降。此外，在热带或亚热带地区，天花板176与楼板174之间的空气温度常超过40℃，亦限制高功率LED电灯160的散热效果。
热传递可以借助传导、对流及辐射等方式进行，但前述的高功率LED电灯148及160仅利用高导热材料传导热量，及增加发热体与空气接触的面积提高室温下的自然对流散热。以相同的散热面积而言，自然对流的散热量是强制对流(例如风扇)的1/4至1/10，且为达到理想的散热效能，自然对流的散热鳍片间隔通常较大，造成自然对流散热器的体积相对于强制对流散热器庞大许多。考虑风扇的寿命及可靠度，强制对流散热相对于高功率LED的长效可靠度而言也不可行，因此随着LED功率提高以应对照明需求，散热问题变得更加棘手难解。
由于高功率LED的接面工作温度需低于120℃，以避免高功率LED过热损坏，且高功率LED的发光亮度(流明值)及使用寿命皆与接面工作温度成反比，因此提升高功率LED的散热效率以降低接面工作温度成为高功率LED用于照明的基础。图9是高功率LED的发光亮度比率与接面工作温度的关是图，显示在理想状态下，高功率LED的接面工作温度须低于95℃，以保持发光亮度比率至少80％。图10是高功率LED的使用寿命与接面工作温度的关是图，显示在理想状态下，高功率LED的接面工作温度须低于95℃，以保持使用寿命至少50khr。
高功率LED电灯148的另一缺点是光损失高，这是因为高功率LED 124发出的光在反射杯150内多次反射后有一部份无法成为投射光，光穿透镜片152时又有一部份反射回到反射杯150，因而造成有效光利用率降低。
美国专利公开号第20040004435提出一种LED封装包括盖子覆盖凹槽，凹槽填满冷却液体包裹LED芯片，冷却液体直接接触LED芯片提供散热，理论上这似乎可提高散热效率；然而，此结构中冷却液体仅当作热的传导体，因此实际上无法有效提高散热效率，因为与固体相比，液体的热传导较差，故冷却液体取代传统树脂直接接触LED芯片会降低散热效率。进一步言，在高功率应用中，LED芯片的主动接面约工作在110℃，将主动接面周围的冷却液体加热至非常高的温度，因而在冷却液体至盖子之间产生温度梯度，又该冷却液体非热良导体，因此无法快速将热从LED芯片传送到周遭的空气中，故在主动接面附近的冷却液体将变得非常热，而且热会维持在主动接面附近的冷却液体中。另一缺点为封装太小仅容纳很少的冷却液体，不能进行液体对流散热，因此在散热方面几乎没有多大帮助，再者，由于LED芯片主动接面的工作温度约为110℃，故在主动接面周围的冷却液体可能变为气泡产生进而降低散热效率。既然热无法有效从冷却液体这路径离开，因此LED芯片产生的热大部分仍是跟传统LED一样由电极及金属线传送至接脚。此外，该封装也可能成为另一缺点，因为冷却液体接触裸晶可能侵蚀LED芯片导致损毁。
图11是传统白炽热灯泡的配光曲线图，显示发光亮度比率在60％以上的照明角度为280°，图12是典型的高功率LED的配光曲线图，显示发光亮度比率在60％以上的照明角度为110°，因此高功率LED用于照明的另一问题为照明角度不足，无法达到环境照明要求光线广泛而均匀的条件，需在光学设计上解决照明角度不足的问题才能开创高功率LED用于照明的新契机。
因此，一种改善散热、增加照明角度及提高照明亮度的高功率LED电灯，乃为所冀。
发明内容
本发明的目的之一，在于提出一种用于照明的高功率LED电灯。
本发明的目的之一，在于提出一种低成本的高功率LED电灯。
本发明的目的之一，在于提出一种改善散热的高功率LED电灯。
本发明的目的之一，在于提出一种增加照明角度的高功率LED电灯。
本发明的目的之一，在于提出一种提高照明亮度的高功率LED电灯。
根据本发明，一种高功率LED电灯包括具有装填液体的腔室的容器，提供高功率LED光源穿透该液体的光源模块，光源模塊配置在該腔室中，該光源模塊具有一前方；
高功率發光二極管光源安装在該光源模塊内，以提供光線從該光源模塊的前方穿過該液體，所述光源模块包括高功率LED封装体，固定在载具上；及
轴向导热器，包括轴向导热管及轴向鳍片配件，其中，轴向导热管在载具背面的液体中延伸至远离高功率LED封装体，其一端插入定位环圈及密封盖中，另一端热连接载具；轴向鳍片配件在高功率LED封装体的前方且热连接载具。
一种高功率发光二极管电灯，其特征在于，包括：
具有腔室的容器；
液体充填于该腔室中；
光源模塊，配置在該腔室中，該光源模塊具有一前方；
高功率發光二極管光源，安装在該光源模塊内，以提供光線從該光源模塊的前方穿過該液體；所述光源模块包含数个高功率LED封装体固定在高导热载具的圆锥形表面上；
轴向导热器，包括轴向导热管及轴向导热杆，其中，轴向导热管在载具背面的液体中延伸至远离高功率LED封装体，经定位环圈固定并机械连接载具；同轴导热杆热连接载具且沿着腔室的轴向延伸将热从载具消散至液体中。
一种高功率发光二极管电灯，其中，包括：
具有腔室的管狀容器；
液体充填于该腔室中；
二个面对面的反射杯，分別配置在該管狀容器相對的二端；
二個光源模塊，分別配置在該二個反射杯内；
二個高功率發光二極管光源，分別安装在該二個光源模塊内以提供光線從該各自的光源模塊的前方穿過該液體；及
轴向导热器，具有第一部份配置鄰接該二個反射杯中的至少一個，以及第二部份朝该管状容器的轴向延伸。
一种高功率发光二极管电灯，其中，包括：
具有腔室的容器；
液体充填于该腔室中；
光源模塊配置在該腔室中，該光源模塊具有一前方，該前方沿軸向向下；
一高功率發光二極管光源配置在該光源模塊内，已從該光源模塊的前方穿過該液體；及
軸向鰭片配件，具有一第一部份配置鄰接該光源模塊與第二部份在该液体中末端且軸向地朝该光源模塊的前方延伸；
其中，該第二部份的末端在該腔室中远离该光源模块並浸入該液體中。
在该光源模块的温度升高时，该轴向导热器将热从该光源模块透过该液体传递到该容器，因此该光源模块获得快速且良好的液体对流散热。
该液体有助于热发散、扩展照明角度且提高亮度，较佳者，在该液体中安排加速热对流装置以进一步提高散热，其成本仅已知金属散热鳍片的1/5至1/10；光线进入该液体后的光扩散可扩增照明角度，光线在该液体与容器之间的全反射可达到良好的聚光效果及增加照明亮度。
附图说明
图1是现有的低功率LED；
图2是现有的低功率LED电灯；
图3是现有的高功率LED；
图4是现有的高功率LED的辅助散热结构；
图5是现有的前散热式高功率LED电灯；
图6是现有的背散热式高功率LED电灯；
图7是现有的背散热式高功率LED电灯用于嵌入式灯具的示意图；
图8是现有的背散热式高功率LED电灯用于是顶式灯具的示意图；
图9是高功率LED发光亮度比率与接面工作温度的关是图；
图10是高功率LED使用寿命与接面工作温度的关是图；
图11是传统白炽热电灯的配光曲线图；
图12是典型高功率LED的配光曲线图；
图13是根据本发明的高功率LED电灯；
图14是图13之高功率LED电灯的分解图；
图15是密封盖的剖面图；
图16是图13的高功率LED电灯悬浮染料微粒辅助侧向照明的示意图；
图17是用于环境照明的实施例；
图18是用于环境照明的另一实施例；
图19是用于超高功率环境照明的实施例；
图20a、图20b是用于超高功率环境照明的另一实施例；
图21是进一步提高散热的构造；以及
图22a、图22b是用于超高功率环境照明的又一实施例。
具体实施方式
图13是根据本发明的高功率LED电灯200，图14是分解图。
在高功率LED电灯200中，容器202的腔室203内注满透明或半透明液体204；光源模块包括例如消耗功率大于0.3W的高功率LED封装体206在内部具有电源线222的MCPCB 210上，封装树脂208将高功率LED封装体206及MCPCB 210固定在载具212上且产生水密作用；轴向鳍片配件211在高功率LED封装体206的前方且热连接载具212，轴向导热管213一端插入定位环圈214及密封盖216中，另一端热连接载具212；密封材料218在密封盖216上密封容器202管口；电源转换驱动模块220在光源模块与灯泡标准基座224之间，从电源线226引入的电源转换成固定的直流电流，经电源线222驱动高功率LED封装体206。密封盖216的剖面如图15所示，有楔形边缘232及沟槽234让密封材料218达到较佳密封效果。回到图13，载具212、轴向导热管213及轴向鳍片配件211均是热良导体制成，轴向导热管213及轴向鳍片配件211沿着腔室203的轴向延伸，较佳地，轴长介于腔室203的轴长的四分之一与一倍之间。轴向导热管213在载具212背面的液体中延伸至远离高功率LED封装体206，轴向鳍片配件211在载具212前面的液体中延伸至远离高功率LED封装体206，热经轴向导热管213及轴向鳍片配件211传导至液体204中较冷的部份，高功率LED封装体206产生的热经MCPCB 210和载具212传导至轴向导热管213及轴向鳍片配件211，再传递至液体204中，如图13中的箭号所示，液体204经热传导及热对流将热消散至容器202进一步将热消散至环境空气中，由于容器202与环境空气之间的接触面积大，自然空气对流可帮助散热，因此降低高功率LED封装体206的接面工作温度。即使液体204的热传导低于金属或其它固体材料，但轴向导热管213及轴向鳍片配件211有足够高的热传导性将热迅速从载具212传导至液体204中，因而强化热移转至液体204。轴向导热管213及轴向鳍片配件211将热迅速传导至液体204中较冷的部份，可提高液体204中的对流。当高功率LED封装体206点亮时，在液体204中之高功率LED封装体206如同热源，容器202类似锅炉，在此情况下，高功率LED封装体206加热邻近液体，较热的液体向上流动，因而在液体204中产生自然对流。
容器202可根据高功率LED封装体206的消耗功率选择较小或较大尺寸，容器202的平滑外表面有利于空气流动，达到快速散热的效果。容器202有反射性侧壁228及透明或半透明前壁203，反射性侧壁228可借镀上金属或光学膜产生，容器202由玻璃、塑料、硅橡胶或其它透明或半透明材料制成，载具212、轴向导热管213及轴向鳍片配件211由金属、石墨、碳纤维、陶瓷或复合材料或其它高导热材料制成，液体204最好选用无色、无毒、低黏度的透明或半透明物，例如水、橄榄油、石蜡油及低黏度润滑油。在环境温度-30℃至35℃的寒带地区，液体204以水为基础，其中添加甲醇、乙醇、乙二醇或其它防冻剂。在环境温度35℃至60℃的热带地区，液体204以油为基础。
在某些实施例中，液体204中添加微量染料如图16所示，当光236穿过液体204时，液体中的悬浮染料微粒238产生光236的反射与折射，提高侧向照明、扩大照明角度及柔化入射至人眼的光。液体204中的添加染料可依不同的光颜色选用不同颜色，例如在白光及多彩光的应用，选用白色染料，在红、蓝、绿、橙、黄等其它光颜色的应用，选用与高功率LED封装体206产生的光颜色相同的染料，以增艳丰富色光的显示。若高功率LED封装体206产生的光为紫外光，可在液体204中添加荧光粉或荧光液，利用荧光物吸收紫外光后释放可见光的特性，在液体204中添加不同的荧光粉或荧光液使电灯200成为多彩的荧光灯。可依需求在液体204中添加界面活性剂使染料或荧光粉均匀分布在液体204中。
图13所示的电灯200可作为聚光灯(投射灯)或环境照明。若电灯200为聚光灯，则液体204为透明且不添加染料，容器202有反射性侧壁228，可在高功率LED封装体206的前方设光学镜片以引导光投射。若电灯200作为环境照明，则透明前壁230的投射角度最好大于110°，容器202有透明侧壁228和透明前壁230，在液体204中添加微量染料。
图17是环境照明的实施例，可用于取代传统灯泡。电灯240包括容器202，其腔室203注满透明液体204；光源模块包含数个高功率LED封装体206固定在高导热载具244的圆锥形表面上，经定位环圈214固定的轴向导热管242机械连接载具244；密封盖216密封容器202管口；电源转换驱动模块220连接在高功率LED封装体206与灯泡标准基座224之间，产生直流电流经轴向导热管242中的电源线驱动高功率LED封装体206。同轴导热杆245热连接载具244且沿着腔室203的轴向延伸将热从载具244消散至液体204中，较佳者，同轴导热杆245的轴长介于腔室203轴长的四分之一与一倍之间，因而在液体204中延伸至远离高功率LED封装体206，将热迅速从载具244传导至液体204中。较佳者，轴向导热管242及轴向导热杆245为金属、石墨、碳纤维、陶瓷或复合材料制的热导管，轴向导热杆245为柱状或其它任何形状。在本实施例中，容器202为透明球状物，液体204包含微量染料。在不同实施例中，高功率LED封装体206包括不同光颜色，每次可点亮全部或一部份的高功率LED封装体206。
图18是环境照明的另一实施例，可取代传统日光灯。在电灯246中，容器包括管状物250，光源模块包括面对面的反射杯252及253覆盖管状物250相对两端，高功率LED封装体206及207分别在反射杯252及253中；容器的腔室203内充满具有微量染料的透明液体204；电源供应装置248电连接高功率LED封装体206及207。反射杯252及253具有光聚焦效果，管状物250透明让高功率LED封装体206及207的光穿过。由于高功率LED封装体206及207在管状物250两端，一些光沿着管状物250产生全反射且借液体204中的悬浮染料微粒产生反射及折射，因而产生均匀照明效果。在本实施例中，反射杯252及253由良导热体制成以增进高功率LED封装体206及207的散热。然而，高功率LED封装体206及207产生的热主要经轴向导热杆251传递至液体204中，在液体204中的轴向导热杆251的基座连接高功率LED封装体206或207的载具且延伸至远离高功率LED封装体206及207使散热效果更强。高功率LED封装体206及207可同时点亮或只点亮其中一个。
图19是超高功率环境照明的实施例，在电灯254中，光源模块包括数个高功率LED封装体206固定在载具264上，散热器256贴附载具264且具有鳍片262，数个光学镜片258分别在高功率LED封装体206前产生想要的照明角度；与散热器256接壤的容器260具有腔室203，填充透明液体204。特别地，数个轴向导热杆266连接载具264或散热器256强化高功率LED封装体206的散热。在本实施例中，腔室203内的液体204不添加染料，使照明角度更广。
图20a和图20b是超高功率环境照明的另一实施例，在与灯泡兼容的电灯268中，光源模块包括具有环形表面的载具270固定数个高功率LED封装体206，容器274充满液体276且与载具270接壤。除了在上述实施例中所述，轴向导热杆272的基座在载具270附近但不直接连接载具270，尾部在液体276中延伸至远离高功率LED封装体206。在高功率LED封装体206工作期间，高功率LED封装体206及载具270附近的液体276变热，高温液体276加热轴向导热管272，因此轴向导热管272将热从光源模块经液体276传导至容器274。
图21是进一步提高散热的示意图，增加套筒278在图17的电灯240的轴向导热杆245上。如图21中的箭号所示，轴向导热杆245将热从载具244传递至周围液体204，在套筒278中较热的液体向上流动，因而在液体204中引起较强的热对流提高散热。
图22a和图22b是又一个与灯泡兼容的电灯280，光源模块包括具有盘状表面的载具282固定数个高功率LED封装体206，盖子284覆盖在高功率LED封装体206上，使高功率LED封装体206及载具282不直接接触液体276，容器274与载具270接攘且具有充满液体276的腔室，轴向导热杆286热连接载具270将热从载具270经液体276传导至容器274，轴向导热杆286在液体276中延伸至远离高功率LED封装体206及载具282。
根据本发明，浸入液体中的轴向热导体主要为将热从工作中的LED封装体经液体均匀地消散至容器，在电灯中的轴向热导体可以包括热导管，形态可以为管状、棒状、柱状或鳍状，可以是柔软或坚固的，轴向热导体可直接连接载具或不连接载具。若高功率LED封装体及载具没有直接接触液体，则轴向热导体最好热连接载具俾良好接收来自载具的热；若高功率LED封装体及/或载具直接接触液体，则轴向热导体可仅有第一部份浸入邻近载具的液体中，经周围的热液体良好接收来自载具及高功率LED封装体的热，第二部份在液体中延伸至远离载具及高功率LED封装体。
根据本发明，为适应高功率LED在不同照明用途的应用或要求，液体的材料能轻易地改变，且可改变容器的几何结构，例如大小及形状，俾快速散热及最佳化照明光学。
主要组件编号说明
100  低功率LED
102  半导体晶粒
104  金线
106  正极脚
108  负极脚
110  环氧树脂透光镜片
112  低功率LED电灯
114  灌胶层
116  PCB
118  电源转换驱动模块
120  灯泡标准接头
122  外壳
124  高功率LED
126  光学镜片
128  封装树脂
130  半导体晶粒
132  金线
133  金线
134  塑料外壳
136  散热垫片
138  正极脚
140  负极脚
142  散热结构
144  金属心塑料电路板
146  散热鳍片
148  前散热式高功率LED电灯
150  反射杯
152  光学镜片
154  电源转换驱动模块
156  灯泡标准接头
158  散热鳍片
160  背散热式高功率LED电灯
162  光学镜片
164  热导管
166  散热鳍片
168  电源转换驱动模块
170  电源输入端
172  灯罩
174  楼板
176  天花板
200  高功率LED电灯
202  容器
203  腔室
204  液体
206  高功率LED封装体
207  高功率LED封装体
208  封装树脂
210  金属心塑料电路板
211  轴向鳍片配件
212  载具
213  轴向导热管
214  定位环圈
216  密封盖
218  密封材料
220  电源转换驱动模块
222  电源线
224  灯泡标准基座
226  电源线
228  透明侧壁
230  透明前壁
232  斜面
234  凹槽
236  光线
238  染料微粒
240  高功率LED电灯
242  轴向导热管
244  载具
245  同轴导热杆
246  高功率LED电灯
248  电源供应装置
250  管状物
251  轴向导热杆
252  反射杯
253  反射杯
254  高功率LED电灯
256  散热器
258  光学镜片
260  容器
262  鳍片
264  载具
266  轴向导热杆
268  高功率LED电灯
270  载具
272  轴向导热杆
274  容器
276  液体
278  套筒
280  高功率LED电灯
282  载具
284  盖子
286  轴向导热杆

Claims (10)

1.一种高功率发光二极管电灯，其特征在于，包括：
具有腔室的容器；
液体充填于该腔室中；
光源模块配置在该腔室中，该光源模块具有一前方；
高功率发光二极管光源，安装在该光源模块内，以提供光线从该光源模块的前方穿过该液体，所述光源模块包括高功率LED封装体，固定在热传导载具上；以及
轴向导热器，包括轴向导热管及轴向鳍片配件，其中，轴向导热管在载具背面的液体中延伸至远离高功率LED封装体，其一端插入定位环圈及密封盖中，另一端热连接载具；轴向鳍片配件在高功率LED封装体的前方且热连接载具。
2.如权利要求1所述的电灯，其特征在于，所述载具、轴向导热管及轴向鳍片配件由金属、石墨、碳纤维、陶瓷或复合材料或其它高导热材料制成。
3.如权利要求1所述的电灯，其特征在于，该封装体的内部具有电源线的金属心塑料电路板，通过封装树脂将高功率LED封装体和金属心塑料电路板固定在热传导载具上。
4.如权利要求1所述的电灯，其特征在于，该热传导载具及该导热器的轴向导热管都直接接触该液体。
5.如权利要求1所述的电灯，其特征在于，还包括盖子将该热传导载具及该高功率发光二极管光源与该液体隔离。
6.如权利要求1所述的电灯，其特征在于，该热传导载具邻近该导热器的轴向导热管，但不相连。
7.如权利要求1所述的电灯，其特征在于，该热传导载具及该导热器的轴向导热管都直接接触该液体。
8.一种高功率发光二极管电灯，其特征在于，包括： 
具有腔室的容器；
液体充填于该腔室中；
光源模块，配置在该腔室中，该光源模块具有一前方；
高功率发光二极管光源，安裝在该光源模块内，以提供光线从该光源模块的前方穿过该液体；所述光源模块包含数个高功率LED封装体固定在热传导载具的圆锥形表面上；
导热器，包括轴向导热管及轴向导热杆，其中，轴向导热管在载具背面的液体中延伸至远离高功率LED封装体，经定位环圈固定并机械连接载具；轴向导热杆热连接载具且沿着腔室的轴向延伸将热从载具消散至液体中。
9.如权利要求8所述的电灯，其特征在于，还包括套筒套在该导热器上。
10.如权利要求8所述的电灯，其特征在于，还包括光学镜片在该容器中以引导该高功率发光二极管光源发出的光。 
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US7997750B2 (en) 2011-08-16
US20080013316A1 (en) 2008-01-17
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US20090273924A1 (en) 2009-11-05
KR100982101B1 (ko) 2010-09-13
US7922359B2 (en) 2011-04-12
KR20100003261A (ko) 2010-01-07
US7878697B2 (en) 2011-02-01
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KR20080007525A (ko) 2008-01-22

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