CN104654084A - 一种高效散热led灯 - Google Patents

一种高效散热led灯 Download PDF

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CN104654084A
CN104654084A CN201510085646.9A CN201510085646A CN104654084A CN 104654084 A CN104654084 A CN 104654084A CN 201510085646 A CN201510085646 A CN 201510085646A CN 104654084 A CN104654084 A CN 104654084A
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glass shell
heat
cup
heat dissipation
light source
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陈方
沈锦祥
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Zhejiang Shenghui Lighting Co Ltd
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Zhejiang Shenghui Lighting Co Ltd
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Priority to CN201510085646.9A priority Critical patent/CN104654084A/zh
Publication of CN104654084A publication Critical patent/CN104654084A/zh
Priority to EP16751909.9A priority patent/EP3259519A4/en
Priority to PCT/CN2016/073056 priority patent/WO2016131378A1/en
Priority to US15/543,981 priority patent/US10041665B2/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
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    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/004—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board
    • F21V23/006—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board the substrate being distinct from the light source holder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
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    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
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    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—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
    • F21K9/233—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 a spot light distribution, e.g. for substitution of reflector lamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—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
    • F21K9/235—Details of bases or caps, i.e. the parts that connect the light source to a fitting; Arrangement of components within bases or caps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—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
    • F21K9/238—Arrangement or mounting of circuit elements integrated in the light source
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/02—Cages
    • 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
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • 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
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/71—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
    • F21V29/713—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements in direct thermal and mechanical contact of each other to form a single system
    • 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
    • F21V29/86—Ceramics or glass
    • 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
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

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  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
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Abstract

本发明涉及一种高效散热LED灯，包括灯头、玻璃外壳、驱动电源、LED光源模块及光学装置，玻璃外壳内部为LED光源模块和驱动电源，玻璃外壳的上下两端分别为光学装置和灯头；玻璃外壳内部设有散热杯，散热杯的外侧壁与玻璃外壳的内侧壁贴合；LED光源模块贴合并固定在散热杯内，驱动电源设置在散热杯的下方。与现有技术相比，本发明添加了导热性能好的散热杯，LED光源模块贴合固定在散热杯内，散热杯的外侧壁与玻璃外壳的内侧壁紧密贴合，LED光源模块产生的热量通过散热杯快速传导到与散热杯紧密贴合的玻璃外壳，由于玻璃外壳具有良好的导热性能及热幅射能力，从而有效地提高了LED灯的散热效果。

Description

一种高效散热LED灯
技术领域
本发明涉及LED照明技术领域，特别涉及一种高效散热LED灯。
背景技术
LED灯由于具有节能、环保、可光控、固体化、长寿命等很多优点，已经被广泛应用于城市的公共照明、办公及室内照明等各个领域。低廉的结构成本，高效的散热性能，一直也是市场对LED灯研发的重点设计方向。
现有的一些散热设计方案通常有：
1、利用高辐射涂料、喷涂在散热器表面，优点是工艺简单易操作，缺点效果不明显，品质不稳定、价格较高。
2、利用钎焊薄板散热器，优点是结构紧凑，散热效果好，缺点是工艺复杂，易变形，成本高。
3、采用主动散热结构，利用风扇或其他增加对流强度的工件达到加快散热目的，优点是散热效果好，缺点是散热器体积大，价格昂贵，而且风扇寿命不稳定，寿命无法保证。
4、采用电子模块吸热降温散热，优点是体积小，散热效果好，缺点价格昂贵，而且模块寿命不稳定，寿命无法保证。
可见上面所述的散热设计方案并非很理想，目前，在绝缘塑料内嵌设铝散热器也已经成为了LED灯中散热技术的主流，这种技术手段很好地解决了绝缘、散热以及较低成本的问题；但是这种技术手段也存在着不足，由于这两种材料热膨胀系数不同，LED灯在恶劣的条件下长期工作，会出现开裂、表面腐蚀的现象，从而造成触电的危险；并且，如果使用一般塑料的话其散热能力较低，
如果使用导热塑料的话其成本较高；在LED市场在持续要求提升性能、降低成本的要求下，绝缘塑料内嵌铝散热器的技术也遇到了瓶颈。
为了解决上述技术问题，本发明提出一种装配简单、散热效果好、成本较低的高效散热LED灯。
发明内容
本发明针对上述现有技术中存在的不足，提供了一种装配简单、散热效果好、成本较低的高效散热LED灯。
本发明的技术方案是这样实现的：
一种高效散热LED灯，包括灯头、玻璃外壳、驱动电源、LED光源模块以及光学装置，其中在玻璃外壳的内部从上往下依次为LED光源模块和驱动电源，玻璃外壳的上下两端分别设置光学装置和灯头；在玻璃外壳内部设有散热杯，散热杯的外侧壁与玻璃外壳的内侧壁贴合，且散热杯的外沿与玻璃外壳的外沿之间的爬电距离大于1.2mm；所述LED光源模块贴合并固定在散热杯内，驱动电源设置在散热杯的下方。
本发明添加了导热性能好的散热杯，将LED光源模块配合固定在散热杯内，散热杯的外表面与玻璃外壳的内表面紧密贴合，保证了热传导的通畅。当LED灯工作时，LED光源模块所产生的热量通过散热杯快速传导到与散热杯紧密贴合的玻璃外壳，由于玻璃外壳具有良好的导热性能及热幅射能力，与外界空气实现换热，有效地提高了LED灯的散热效果；同时，将散热杯的外沿与玻璃外壳的外沿之间的爬电距离>1.2mm，加强了LED灯整体的安全性能；而且由于玻璃是绝缘体，所以在保证散热的同时，使用更高效且成本低的非隔离电源，从而进一步提高产品光效及降低成本。
较佳地，在玻璃外壳的内侧壁形成有用以支撑散热杯底部的台阶面。
较佳地，所述的LED光源模块与散热杯固定连接，且LED光源模块的底面与散热杯的内底面紧密贴合。
较佳地，所述的散热杯至少包含一个平面和一个曲面，其材质采用铝材料、导热塑料材料、玻璃、或者陶瓷材料的其中一种制作而成。
采用的这些材料不仅导热性能好，而且成本低。
较佳地，为了进一步提高散热杯的导热性能所述散热杯的杯壁厚度为1.5～2.5mm。
较佳地，为了进一步提高热幅射能力，在玻璃外壳的外表面镀有介质膜。
较佳地，为了使整体散热效果大大提高，在玻璃外壳的外表面经过喷砂处理。
较佳地，所述的驱动电源的输出端与LED光源模块的输入端正负极通过pin针分别实现电气连接，驱动电源的输入端通过接线端子或灯头与市电实现连接。
采用了上述技术方案的本发明的设计思想及有益效果是：
本发明提供了一种装配简单、散热效果好、成本较低的高效散热LED灯。本发明添加了导热性能好的散热杯，将LED光源模块配合固定在散热杯内，散热杯的外表面与玻璃外壳的内表面紧密贴合，那么LED光源模块所产生的热量通过散热杯快速传导到与散热杯紧密贴合的玻璃外壳，由于玻璃外壳具有良好的导热性能及热幅射能力，与外界空气实现换热，从而有效地提高了LED灯的散热效果。
进一步地，散热杯采用的由铝材料、导热塑料材料等导热率大于1的材料制作而成，这些材料不仅导热性能好，而且成本低。
附图说明
图1为本发明的平面结构示意图；
图2为图1沿A-A线的剖视图；
图3为本发明高效散热LED灯的立体分解图。
具体实施方式
本发明的具体实施方式如下：
实施例：首先定义方向：本发明的描述是在与正常使用时的方向相反的情况下进行的。
一种高效散热LED灯，如图1～3所示，包括灯头1、玻璃外壳2、驱动电源3、LED光源模块4以及光学装置5，在玻璃外壳2的内部从上往下依次为LED光源模块4和驱动电源3，玻璃外壳2的上下两端分别连接光学装置5和灯头1，LED光源模块4上设置有光学器件；其中所述的驱动电源3的输出端与LED光源模块4的输入端正负极通过pin针分别实现电气连接，驱动电源3的输入端通过接线端子或灯头与市电实现连接。
为了使LED灯更好的进行散热，在玻璃外壳2的内侧壁的台阶面21上设有开口朝上的散热杯6；具体地说，散热杯6包含一个平面和一个曲面，其中平面为杯底，曲面为杯壁，该散热杯6是杯壁厚度为0.8mm的铝制散热杯；散热杯6的外侧壁与玻璃外壳2的内侧壁紧密贴合，LED光源模块4的底面贴合并固定在散热杯6内，驱动光源3设置在散热杯6的下方；为了保证安全，散热器6的外沿与玻璃外壳2外沿之间的爬电距离为2mm。
更进一步地说，LED光源模块4与散热杯6通过螺丝7固定连接，且LED光源模块4的底面与散热杯6的内底面紧密贴合；在玻璃外壳2的外表面还进行了镀膜处理和喷砂处理。
本发明LED灯的散热部分包括玻璃外壳2和散热杯6，散热杯6的外侧壁与玻璃外壳2的内侧壁紧密贴合，散热杯6发挥高导热作用，散热杯6把LED光源模块4产生的热量快速地传给玻璃外壳2，并且玻璃外壳2表面进行了镀膜处理和喷砂处理，从而使传导、对流和辐射三种散热方式都得到了很好的发挥作用，使LED灯的整体散热效果大大提高；而且由于玻璃外壳2是绝缘体，所以在保证散热的同时，使用更高效且成本低的非隔离电源，从而进一步提高产品光效及降低成本；同时散热杯6也采用低成本的高导热材料。
本发明优选实施例只是用于帮助阐述本发明。优选实施例并没有详尽叙述所有的细节，也不限制该发明仅为所述的具体实施方式。显然，根据本说明书的内容，可作很多的修改和变化。本说明书选取并具体描述这些实施例，是为了更好地解释本发明的原理和实际应用，从而使所属技术领域技术人员能很好地利用本发明。本发明仅受权利要求书及其全部范围和等效物的限制。以上公开的仅为本申请的几个具体实施例，但本申请并非局限于此，任何本领域的技术人员能思之的变化，都应落在本申请的保护范围内。

Claims (8)

1.一种高效散热LED灯，包括灯头、玻璃外壳、驱动电源、LED光源模块以及光学装置，其中在玻璃外壳的内部从上往下依次为LED光源模块和驱动电源，玻璃外壳的上下两端分别设置光学装置和灯头；其特征是：在玻璃外壳内部设有散热杯，散热杯的外侧壁与玻璃外壳的内侧壁贴合，且散热杯的外沿与玻璃外壳的外沿之间的爬电距离大于1.2mm；所述LED光源模块贴合并固定在散热杯内，驱动电源设置在散热杯的下方。
2.根据权利要求1所述的高效散热LED灯，其特征是：在玻璃外壳的内侧壁形成有用以支撑散热杯底部的台阶面。
3.根据权利要求1所述的高效散热LED灯，其特征是：所述的LED光源模块与散热杯固定连接，且LED光源模块的底面与散热杯的内底面紧密贴合。
4.根据权利要求3所述的高效散热LED灯，其特征是：所述的散热杯至少包含一个平面和一个曲面，其材质采用铝材料、导热塑料材料、玻璃或者陶瓷材料的其中一种制作而成。
5.根据权利要求4所述的高效散热LED灯，其特征是：所述散热杯的杯壁厚度为1.5～2.5mm。
6.根据权利要求1所述的高效散热LED灯，其特征是：在玻璃外壳的外表面镀有介质膜。
7.根据权利要求6所述的高效散热LED灯，其特征是：在玻璃外壳的外表面经过喷砂处理。
8.根据权利要求1所述的高效散热LED灯，其特征是：所述的驱动电源的输出端与LED光源模块的输入端正负极通过pin针分别实现电气连接，驱动电源的输入端通过接线端子或灯头与市电实现连接。
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