CN101625079B - 中空式液冷led灯 - Google Patents

中空式液冷led灯 Download PDF

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CN101625079B
CN101625079B CN2009100964523A CN200910096452A CN101625079B CN 101625079 B CN101625079 B CN 101625079B CN 2009100964523 A CN2009100964523 A CN 2009100964523A CN 200910096452 A CN200910096452 A CN 200910096452A CN 101625079 B CN101625079 B CN 101625079B
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led
hollow
heat dissipating
dissipating housing
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华桂潮
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Huizhou Qianfeng Guangcai Technology Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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    • F21V29/507—Cooling arrangements characterised by the adaptation for cooling of specific components of means for protecting lighting devices from damage, e.g. housings
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    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
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    • F21V29/58—Cooling arrangements using liquid coolants characterised by the coolants
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    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
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    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
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    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
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Abstract

本发明公开了一种中空式液冷LED灯，包括电连接器、电源、灯座、上部的中空散热罩、LED安装基板、LED和下部的散光灯罩，所述的散光灯罩采用基本透明的材料，其特征在于所述的上部中空散热罩中空腔内充有导热液体。本发明散热效果良好，散热罩重量轻、环保耐用、制造简单、成本低。更为重要的是，由于本发明的导热液体直接充注在中空散热罩的中空腔内，因而在提高散热效果的同时又不会增加产品的体积，并且在基本不影响散热效果的条件下大大减轻了原有发明中散热液体的重量。

Description

中空式液冷LED灯
技术领域
本发明涉及一种LED灯，具体是涉及一种用液体帮助散热的LED灯。
背景技术
随着大功率LED技术的发展与成熟，照明用LED的性能指标日益大幅度提高。目前产业化的白光LED的光效已经达到(70-90)1m/W，远远超过普通白炽灯的光效水平，大功率LED将在照明领域得到越来越广泛的应用，人们把它誉为21世纪代替荧光灯和白炽灯的第四代照明光源。
但是由于LED要在80摄氏度以下，才能获得很高的光效和很长的寿命，因此对LED灯的热设计要求很高。散热不畅会引起LED光衰，降低发光效率和使用寿命。为了获得很好的散热效果，同时又能替代现行的商业标准灯泡，专利(CN1605790A LED灯设备及其方法)提出了一种新的LED照明装置(图1)。
此照明装置的构造包括提供所需输出电压的电源变换器和具有高导热性基底的光学引擎，机械地连接到该基底上的多个LED半导体装置，固定在该基底上并且环绕该LED装置的至少一部分的外围堤，以及设置在多个LED装置上并由外围堤限制的基本上透明的聚合体密封剂。
此照明器具散热罩为具有适当高导热性和适当刚度的固体材料，来消散来自LED照明装置的其他元件的热量。例如，铝合金、铜合金黄铜、镁合金、碳聚合体、碳合成物的各种金属和/或陶瓷。散热罩构造为多个稽状物，由此增加散热罩表面积消散大量的热。这样的散热罩重量重、金属用量多、制造复杂、成本高。
为了解决上述问题，中国专利CN2735548公开了一种高功率LED散热结构，它包含壳体基座、散热箱、电路基板以及至少一高功率LED，所述的散热箱内封存有导热液体。由于散热箱内封的导热液体具有良好的导热性能，比固态的金属的热阻更小，目的是为了减小发热体与散热面之间的热阻。因此可以采用更小的散热面积，获得大面积的散热效果。因而，该技术方案可以在很大程度上解决了这一问题。但是，由于导热液体占用了较多的内部空间，同时也增加了产品的重量和安装难度，降低了产品的安全性(图2)。
发明内容
为了克服现有产品的不足，本发明提供一种中空式液冷LED灯。
本发明解决现有发明的技术问题所采用的技术方案是：
中空式液冷LED灯，包括电连接器、电源、灯座、上部的中空散热罩、LED安装基板、LED和下部的散光灯罩，所述的散光灯罩采用基本透明的材料，其特征在于所述的中空散热罩中空腔内充有导热液体。
本发明的中空式液冷LED灯灯具，由于在中空散热罩内装有高性能导热液体(例如，水、导热油、盐水、乙二醇溶液、二甲烷饱和溶液等)，通过传导和对流以实现热传导，从而达到良好的散热效果。同时，装有高性能导热液体的中空散热罩可以由轻质材料制作而成，这样散热罩重量轻、环保耐用、制造简单、成本低。更为重要的是，由于本发明的导热液体直接充注在中空散热罩的中空腔内，因而在提高散热效果的同时又不会增加产品的体积，并且在基本不影响散热效果的条件下大大减轻了原有发明中散热液体的重量。
根据本发明，所述的中空散热罩可以是底端开口的形状，并与所述的LED安装基板的周边形成密封连接，LED安装基板的上表面与所述的导热液体接触，从而将LED发出的热量通过导热液体传导出去。
所述的中空散热罩具有顶部，通过密封垫圈与灯座底部连接。
根据本发明，所述的导热液体可以是具有不结冻、无腐蚀性、无可燃性、无毒性的任何溶液，如水、导热油、盐水、乙二醇溶液或二甲烷饱和溶液其中的任何一种。导热液体可以是导电或非导电液体。
根据本发明，中空散热罩采用塑料、玻璃或金属材料，优选为轻型材料。
根据本发明，中空散热罩的内外夹层的中空腔内充满导热液体。
根据本发明，所述的中空散热灯罩外表面呈连续的光滑过渡的表面，如平滑的表面、波纹面等。
根据本发明，所述的中空散热罩外呈还可以呈断续的表面，如稽状物。
根据本发明，所述的散光灯罩采用玻璃或PMMA材料。
附图说明
下面结合附图对本发明做进一步说明，但本发明的实施方式不限于此。
图1为现有技术的一种LED照明装置的等比例示意图
图2为现有技术的一种液冷LED照明装置示意图
图3为本发明第一实施例中空式液冷LED示意图。
图4为本发明第二实施例中空式液冷LED示意图。
图5为本发明第三实施例中空式液冷LED示意图。
图6为本发明第四实施例中空式液冷LED示意图。
图7为本发明第五实施例中空式液冷LED示意图。
图8为本发明第六实施例中空式液冷LED示意图。
图9为本发明第七实施例中空式液冷LED示意图。
具体实施方案
如图3所示，其为本发明的第一实施例，本发明实施例提供一种中空式液冷LED照明灯，包括插接式电连接器1、LED电源2、灯座4、中空散热罩6、铝基板7、LED 8、散光灯罩9、电源线12。所述的电连接器1设置于LED灯灯头的下部连接市电，其与LED电源2的输入连接，所述的中空散热罩6的中空腔内充满有高性能导热液体，所述的LED电源2设置于中空散热罩6形成的空间内，所述的LED 8设置于LED铝基板7之上，所述的LED铝基板7的周边与中空散热罩6下端紧密连接，所述的LED 8置于散光灯罩9内，散光灯罩9与中空散热罩6连接。
本发明实施例所述的电连接器1为插针式，其规格还可以为螺旋式等。
本发明实施例所述的中空散热罩6与LED铝基板7构成封闭体，中空腔内装满有高性能导热液体5。本发明实施例所述的中空散热罩6为顶部开口形状，通过密封垫圈与灯座底部连接。中空散热罩6由塑料或玻璃或其他轻型环保材料制作而成。在不同的实施例中，中空散热罩6基本上可制造成任何形状，并有从连续的、基本“平滑”的表面到中断的不连续的表面(如，稽状物)的任何地方。此外，在各种应用和如下所述中，中空散热罩6可具有与商业标准灯泡相似的形状。应当理解，在本发明范围中，几乎可模拟或基本上模拟任何灯泡的形状，并且中空散热罩6可构造为任何形状并仍落在本发明的范围之内。
例如，根据本发明的不同实施例，中空散热罩6可构造成便于热能消散的各种形状和尺寸，如通过增大中空散热灯罩6的面积。
本发明实施例所述的导热液体5为具有适当高导热性、强流动性、发挥缓慢和适当稳定性的液体材料，来消散来自LED照明装置的其他元件的热量。例如，水、导热油、盐水、乙二醇溶液、二甲烷饱和溶液等。选择导热液体时，下列因素必须加以考虑：导热液体的热传递能力；导热液体的冰点和粘度；导热液体沸点和分解温度；导热液体腐蚀性；导热液体的可燃性、毒性、费用等。导热液体可为导电液体或非导电液体。
本发明实施例所述的LED8通过导热绝缘胶片与导热绝缘胶布与LED铝基板7紧密连接，LED铝基板7周边与中空散热罩6下端紧密连接，LED铝基板7的上表面与导热液体5接触，通过传导和对流实现传导热量。
本发明实施例所述的发光二极管LED 7置于散光灯罩9内，所述的散光灯罩9可以是一端开口的中空半球状体或其他形状，其与中空散热罩6连接，其尺寸与中空散热罩6尺寸及中空式液冷LED灯灯头所设计的尺寸相适应即可。散光灯罩9采用透明的材质制作而成，如玻璃或PMMA等，表面再加以喷沙、喷粉等处理，根据需要达到不同的发光效果。还可以通过调整灯罩的表面曲率来实现不同的光线强度和光照面积的需求。
本发明实施例所述的LED灯电源2置于中空散热罩6形成的空间内。LED电源2经电源线12给LED供电，LED灯电源2为开关电源，其可接市电使用。当导热液体为非导电液体时，LED灯电源2可为非隔离型电源。
如图4所示，其为本发明的第二实施例，本发明实施例提供一种中空式液冷LED照明灯，包括插接式电连接器1、LED电源2、灯座4、中空散热罩6、铝基板7、LED 8、散光灯罩9、电源线12。中空散热罩6外表面10可构造为多个稽状物，稽状物里也装有高性能导热液体5，由此增加中空散热罩6的表面积，中空散热罩6因此可消散大量的热。各个稽状物被这样构造以使外边缘呈现商业标准灯泡的横截面的一段，该轮廓顺次基本上与商业标准灯泡相似。
本发明实施例所述的中空式中空式液冷LED照明灯的其余结构与前述的第一实例相同。
如图5所示，其为本发明的第三实施例，本发明实施例提供一种中空式液冷LED照明灯，包括插接式电连接器1、LED电源2、灯座4、中空散热罩6、铝基板7、LED 8、散光灯罩9、电源线12。中空散热罩6外表面10可构造为多个散热片，由此增加中空散热罩6的表面积，中空散热罩6因此可消散大量的热。各个散热片被这样构造以使外边缘呈现商业标准灯泡的横截面的一段，该轮廓顺次基本上与商业标准灯泡相似。
本发明实施例所述的中空式中空式液冷LED照明灯的其余结构与前述的第一实例相同。
如图6所示，其为本发明的第四实施例，本发明实施例提供一种中空式液冷LED照明灯，包括螺旋式电连接器1、LED电源2、灯座4、中空散热罩6、铝基板7、LED 8、散光灯罩9、电源线12。
本发明实施例所述的电连接器1为螺旋式，其余结构与前述的第一实例相同。
如图7所示，其为本发明的第五实施例，本发明实施例提供一种中空式液冷LED照明灯，插接式电连接器1、LED电源2、灯座4、中空散热罩6、铝基板7、LED 8、散光灯罩9、电源线12。
本发明实施例所述的LED灯电源2置于中空散热罩6上部，灯座形成空间内。LED灯8和LED灯电源2作为两个热源，通过传导和对流，可以更好的实现传导热量。
本发明实施例所述的中空式液冷LED照明灯的其余结构与前述的第一实例相同。
如图8所示，其为本发明的第六实施例，本发明实施例提供一种中空式液冷LED照明灯，插接式电连接器1、LED电源2、灯座4、中空散热罩6、铝基板7、LED 8、散光灯罩9、电源线12。
本发明实施例所述的LED 8固定在铝基板7上，整体置于中空散热罩6腔内的导热液体中。这样减少了LED灯热源至导热液体间的热阻，更有利于散热。本发明实施例所述的LED电源2置于中空散热罩6形成的空间内，通过电源线12与插接式电连接器1相连。
本发明实施例所述的中空式液冷LED照明灯的其余结构与前述的第一实例相同。
如图9所示，其为本发明的第七实施例，本发明实施例提供一种中空式液冷LED照明灯，插接式电连接器1、LED电源2、灯座4、中空散热罩6、铝基板7、LED 8、散光灯罩9、电源线12。
本发明实施例所述的LED 8固定在铝基板7上，置于中空散热罩6腔内的导热液体中。这样减少了LED灯热源至导热液体间的热阻，更有利于散热。本发明实施例所述的LED电源2置于中空散热罩6上部，灯座形成空间内。LED灯8和LED灯电源2作为两个热源，通过传导和对流，可以更好的实现传导热量。
本发明实施例所述的中空式液冷LED照明灯的其余结构与前述的第一实例相同。
本发明实施例提供的一种中空式液冷LED灯头部分的插头、LED照明灯的中空散热罩、LED灯罩、LED灯座的形状根据不同应用情况及要求可以有很多选择。形式和细节上的各种各样变化都落入本专利的保护范围内。
本发明主要用途用于家庭及公共场所的室内或室外各种功率等级的LED灯照明，既适用于低功率的LED照明使用，如室内照明LED灯，也适用于高功率的LED照明场合，如室外LED路灯。既环保耐用，又整洁大方，给人以舒适和美的感觉，其具有结构紧凑、布局合理、散热性能好、成本低、重量轻的特点。其造型精美，具有节能、液体散热和环保的功能结构，主体用优质轻型塑料、玻璃制造。
最后，还需要注意的是，以上列举的仅是本发明的具体实施例。显然，本发明不限于以上实施例，还可以有许多变形。本领域的普通技术人员能从本发明公开的内容直接导出或联想到的所有变形，均应认为是发明的保护范围。
应该理解到的是：上述实施例只是对本发明的说明，而不是对本发明的限制，任何不超出本发明实质精神范围内的发明创造，均落入本发明的保护范围之内。

Claims (7)

1.中空式液冷LED灯，包括电连接器(1)、LED电源(2)、灯座(4)、上部的中空散热罩(6)、LED安装基板(7)、LED(8)和下部的散光灯罩(9)，所述的散光灯罩(9)采用基本透明的材料，其特征在于所述的中空散热罩(6)的内外夹层间的中空腔内充满有导热液体(5)，且所述的中空散热罩(6)底端封闭，所述的LED安装基板(7)与其上固定的LED(8)整体置于中空散热罩(6)底部的封闭中空腔内的导热液体中，使LED(8)与该中空腔内的导热液体直接接触，所述的LED电源(2)放置在中空散热罩(6)形成的空间内，所述中空散热罩(6)为顶部开口形状，并于该顶部通过密封垫圈与所述灯座(4)的底部连接，所述中空散热罩(6)的底部边缘与所述散光灯罩(9)连接。
2.如权利要求1所述的中空式液冷LED灯，其特征在于所述的导热液体为非导电液体。
3.如权利要求1所述的中空式液冷LED灯，其特征在于所述的中空散热罩(6)采用塑料或玻璃制成。
4.如权利要求1所述的中空式液冷LED灯，其特征在于所述的中空散热罩(6)的外表面(10)呈连续的光滑过渡表面。
5.如权利要求4所述的中空式液冷LED灯，其特征在于所述的中空散热罩(6)的外表面(10)为平滑的表面或波纹面。
6.如权利要求1所述的中空式液冷LED灯，其特征在于所述的中空散热罩(6)的外表面(10)呈断续的表面。
7.如权利要求1所述的中空式液冷LED灯，其特征在于所述的散光灯罩(9)采用玻璃或PMMA材料。
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