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CN101373064B - 发光二极管灯具 - Google Patents

发光二极管灯具 Download PDF

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Publication number
CN101373064B
CN101373064B CN2007100765554A CN200710076555A CN101373064B CN 101373064 B CN101373064 B CN 101373064B CN 2007100765554 A CN2007100765554 A CN 2007100765554A CN 200710076555 A CN200710076555 A CN 200710076555A CN 101373064 B CN101373064 B CN 101373064B
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radiator
port
led lamp
fan
heat
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CN101373064A (zh
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徐方伟
余光
赖振田
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Hong Jun Precision Industry Co ltd
Fuzhun Precision Industry Shenzhen Co Ltd
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Hong Jun Precision Industry Co ltd
Fuzhun Precision Industry Shenzhen Co Ltd
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    • 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
    • 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
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • 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
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • F21V29/677—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans the fans being used for discharging
    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/75—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with fins or blades having different shapes, thicknesses or spacing
    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • 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
    • F21V29/74—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
    • 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
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/30—Light sources with three-dimensionally disposed light-generating elements on the outer surface of cylindrical surfaces, e.g. rod-shaped supports having a circular or a polygonal cross section
    • 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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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Geometry (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种发光二极管灯具，包括一散热器、若干围绕散热器外壁贴置的发光二极管模组、及一固定于散热器顶部的风扇，所述散热器包括一具有一上下贯穿通口的导热筒，若干鳍片由导热筒通口的内壁面延伸而出，所述风扇位于该通口上方，且其产生的气流经过所述通口内的鳍片而排出。与现有技术相比，本发明发光二极管灯具具有一风扇安装于散热器上，可对灯具进行主动式散热，从而使灯具的热量得到及时地散发，防止发光二极管过热；且，由于发光二极管模组围绕散热器外壁设置，可将光线向灯具四周辐射，达到一较佳的照明效果。

Description

发光二极管灯具
技术领域
本发明涉及一种发光二极管灯具，特别是指一种具有散热装置的发光二极管灯具。
背景技术
发光二极管作为一种高效的发光源，已经被越来越多地应用在各个领域当中。但是，发光二极管工作时会产生大量的热量，这些热量如若得不到及时的散发，容易使发光二极管产生过热现象，进而导致其发光效率下降。
传统的发光二极管灯具包括一板状的散热体及若干安装于散热体一侧的发光二极管。这些发光二极管呈线性均匀地排列。当发光二极管被点亮时，其产生的热量经由散热体散发至周围的空气当中。
但是，由于这种灯具只能单纯地依靠散热体的热辐射进行被动式散热，散热效率有限。如若发光二极管布置地较为密集，热量将无法得到及时散发，致使发光二极管容易产生过热现象，影响发光效率；且，由于这些发光二极管位于散热体的同侧，其所发出的光线只能从散热体的该侧向外辐射而出，发光角度有限，不能同时照亮灯具的四周围，照明效果不佳。
发明内容
有鉴于此，有必要提供一种散热效率较高且照明效果较佳的发光二极管灯具。
一种发光二极管灯具，包括一散热器、若干围绕散热器外壁贴置的发光二极管模组、及一固定于散热器顶部的风扇，所述散热器包括一具有一上下贯穿通口的导热筒，若干鳍片由导热筒通口的内壁面延伸而出，所述风扇位于该通口上方，且其产生的气流经过所述通口内的鳍片而排出，所述发光二极管灯具还包括一固定于散热器顶部的灯盖及一固定于散热器底部的灯罩，所述散热器收容于灯盖和灯罩围设出的收容空间内，所述风扇安装于所述灯盖的顶部，所述灯盖和灯罩分别开设一与散热器通口连通的开口，所述风扇安装于灯盖的开口处且穿出灯盖外，灯盖的内壁面涂有一层反光物质。
与现有技术相比，本发明发光二极管灯具具有一风扇安装于散热器上，可依靠风扇所产生的高速气流对灯具进行主动式散热，使灯具的热量得到及时地散发，防止发光二极管过热；且，由于发光二极管模组围绕散热器外壁设置，可将光线向灯具四周辐射，达到一较佳的照明效果。
下面参照附图，结合具体实施例对本发明作进一步的描述。
附图说明
图1是本发明发光二极管灯具的立体组装图。
图2是图1的立体分解图。
图3是图2中散热器、发光二极管模组、及风扇的组装图。
图4是图1中散热器的横向剖面图。
具体实施方式
如图1和2所示，本发明的发光二极管灯具包括一散热器30、若干围绕散热器30外侧贴设的发光二极管模组20、一安装于散热器30下部的灯罩10、及固定于散热器30上部的一灯盖40及一风扇50，所述灯盖40和灯罩10共同将散热器收容于其内部。
请一并参阅图4，上述散热器30由热导性良好的金属材料所制成，其包括一导热筒。本发明实施例中的导热筒为一中空的正四棱柱体32。该棱柱体32具有四等大的矩形外壁面320及与这些外壁面320相对应的四矩形内壁面(图未标)，其中每二相邻的内壁面相互垂直且平行于相应的外壁面320。所述四内壁面共同围设出一横截面呈正方形、且沿散热器30轴向贯穿棱柱体32的上、下表面的通口(图未标)，供气流穿过。相邻内壁面的连接处324的上表面开设一螺孔(图未标)，供螺丝(图未示)穿设而将风扇50固定于散热器30上。若干鳍片340分别自四内壁面向内延伸而出，且终止于棱柱体32两两对角方向并形成二交叉的通路322，由此，该二通路322将这些鳍片340分成均匀的四鳍片组34，每一鳍片组34均构成一等腰直角三角形构造。每一鳍片组34的鳍片340相互等间隔设置且均呈矩形，其自棱柱体32的下表面沿散热器30轴向延伸至棱柱体32的上表面，从而使每一鳍片340与棱柱体32等高。将每一鳍片340的自由末端至与这些鳍片340接触的内壁面的距离定义为每一鳍片340的长度，那么位于同一内壁面上的鳍片340的长度自该内壁面两侧向中间逐渐增大。
所述发光二极管模组20分别固定于棱柱体32的四外壁面320上。每一发光二极管模组20包括一矩形的电路板24及沿电路板24长度方向固定于电路板24一侧的若干发光二极管22。棱柱体32的每一外壁面320上沿散热器30轴向固定有三发光二极管模组20，其中每一发光二极管模组20的电路板24的相对一侧与该外壁面320相接触，从而将发光二极管22所产生的热量自电路板24的一侧传导至散热器30。
所述灯盖40和灯罩10分别固定于棱柱体32的顶部和底部。所述灯罩10由透明材质所制成，所述灯盖40内壁面涂有一层反光物质，用于将发光二极管模组20所发出的光线会聚至某一区域，使该发光二极管灯具获得一较佳的照明效果。所述灯盖40开设一方形开口42，所述灯罩10亦开设一与灯盖40开口42相对应的方形开口12。该二开口12、42均与棱柱体32的通口相连通，且该二开口12、42的面积与棱柱体32的通口的横截面积大致相等，以最大限度地增大气流通路。
请一并参阅图3，所述风扇50呈矩形，其横截面积略小于灯盖40开口42的面积，从而使风扇安装于灯盖40的开口42处，即固定于散热器30的鳍片340的顶部。该风扇50的四角处具有与散热器30固定柱324的螺孔相对应的四穿孔(图未标)，四螺丝分别穿过风扇50的穿孔而螺锁于散热器30的螺孔内，进而将风扇50牢固地固定于散热器30的通口上方。此时风扇50的气流出口朝向散热器30内部，以使风扇50所产生的气流穿过散热器30的通口。
使用该发光二极管灯具时，发光二极管22通电发光，其产生的热量经由电路板24传导至散热器30。由于散热器30的顶部加设了一风扇50，可通过风扇50所产生的气流对散热器30进行主动式散热，提高该发光二极管灯具的散热效率。热量经由棱柱体32的内壁面传输至鳍片340上。由于风扇50扇叶(图未标)的旋转，空气被扰动而产生气流。该气流自散热器30顶部流入棱柱体32，再穿过鳍片340间的间隙，最后从散热器30底部排出棱柱体32，从而将热量带出至散热器30外部。由于风扇50扇叶的旋转所产生的气流流速较高，可在短时间内带走大部分的热量，从而避免因散热不及时而导致的发光二极管22过热现象，使这些发光二极管22的发光效率维持在较为理想的状态。

Claims (8)

1.一种发光二极管灯具，其特征在于：包括一散热器、若干围绕散热器外壁贴置的发光二极管模组、及一固定于散热器顶部的风扇，所述散热器包括一具有一上下贯穿通口的导热筒，若干鳍片由导热筒通口的内壁面延伸而出，所述风扇位于该通口上方，且其产生的气流经过所述通口内的鳍片而排出，所述发光二极管灯具还包括一固定于散热器顶部的灯盖及一固定于散热器底部的灯罩，所述散热器收容于灯盖和灯罩围设出的收容空间内，所述风扇安装于所述灯盖的顶部，所述灯盖和灯罩分别开设一与散热器通口连通的开口，所述风扇安装于灯盖的开口处且穿出灯盖外，灯盖的内壁面涂有一层反光物质。
2.如权利要求1所述的发光二极管灯具，其特征在于：所述导热筒为一中空的正四棱柱体，其具有四个供发光二极管模组贴置的外壁面。
3.如权利要求2所述的发光二极管灯具，其特征在于：所述通口的横截面呈四边形。
4.如权利要求3所述的发光二极管灯具，其特征在于：所述通口的横截面呈正方形，通口内的每一内壁面均与相应的外壁面平行。
5.如权利要求1至4任一项所述的发光二极管灯具，其特征在于：所述通口内的每一内壁面延伸出若干相互平行且间隔排列的鳍片。
6.如权利要求5所述的发光二极管灯具，其特征在于：所述每一内壁面上的鳍片的长度自该内壁面的两侧向中间逐渐增大。
7.如权利要求6所述的发光二极管灯具，其特征在于：所述导热筒内具有分别沿导热筒对角方向延伸的二相互交叉的通路，所述通路将上述鳍片分成四组。
8.如权利要求5所述的发光二极管灯具，其特征在于：所述鳍片从导热筒的一端口延伸至另一端口。
CN2007100765554A 2007-08-24 2007-08-24 发光二极管灯具 Expired - Fee Related CN101373064B (zh)

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