WO2010025599A1 - 一种led射灯的散热装置 - Google Patents

一种led射灯的散热装置 Download PDF

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Publication number
WO2010025599A1
WO2010025599A1 PCT/CN2008/073079 CN2008073079W WO2010025599A1 WO 2010025599 A1 WO2010025599 A1 WO 2010025599A1 CN 2008073079 W CN2008073079 W CN 2008073079W WO 2010025599 A1 WO2010025599 A1 WO 2010025599A1
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Prior art keywords
cover
heat
heat dissipation
reflector
joint
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PCT/CN2008/073079
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English (en)
French (fr)
Inventor
黄斌
Original Assignee
Wong Pun
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Publication of WO2010025599A1 publication Critical patent/WO2010025599A1/zh

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Classifications

    • 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
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/505—Cooling arrangements characterised by the adaptation for cooling of specific components of reflectors
    • 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
    • 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
    • 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
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • 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]

Definitions

  • the invention relates to a heat dissipation structure of an LED spotlight, in particular to a heat dissipation structure suitable for all types of lamps of the MR16 spotlight source.
  • the Taiwan patent application No. 095220939 discloses a structure of the MR16 as shown in FIG. 1 , which includes: a light cup, which has a flared shape and includes a reduced end and an enlarged end, and the enlarged end is recessed with an accommodation.
  • a recess (a) is disposed at the reduced end of the lamp cup, the base includes two power contacts; an LED light source is disposed in the receiving recess of the lamp cup;
  • the light source driving circuit board is disposed in the accommodating recess of the lamp cup, and the light source drives the circuit board and is electrically connected to the LED light source and the two power contacts of the base respectively;
  • a light cover (1) is attached to the enlarged end of the light cup.
  • the lampshade is made of a metal material and includes a plurality of heat dissipating fins, and the lamp cover comprises a cover body and a cover bottom (3).
  • the cover body is simultaneously used as a reflection cover, and the cover bottom is used for sealing the LED light source.
  • the MR16 limits the size of the outer peripherals due to the fixed size of these peripheral kits, so it is very difficult to deal with heat dissipation problems. Therefore, the MR16 of this structure on the market currently has only about 1-3 watts of power. If the power is increased, the diode LED light source is easily burned out due to insufficient heat dissipation, and the service life of the diode LED light source is shortened.
  • the object of the present invention is to provide an LED MR16 which is the same size and brighter on the market as the conventional MR16 lamp. Due to the new heat dissipation structure, the service life is longer, up to 35,000 hours, and the power can reach 6- 15w or more, and designed to completely replace the shape and size of existing MR16 products.
  • a heat dissipation device for a long-life energy-saving LED spotlight comprising a reflector cover and a cover bottom made of a metal material, the heat sink further comprising a cylindrical heat dissipation made of a metal material a cover, the heat dissipation cover is disposed outside the reflective cover and the reflective cover is disposed therein, and a plurality of heat dissipation fins are disposed on a periphery of the heat dissipation cover.
  • the reflector, the cover bottom and the heat sink are made of a metal material, the heat conductivity is good, so the heat emitted by the spotlight is quickly dispersed by the reflector and the heat sink, and the heat dissipation speed and The efficiency is greatly improved.
  • the reflector includes a cover body and a joint, and the outer wall of the joint is provided with an external thread;
  • the heat shield includes a cover body and a joint, and the inner wall of the joint is provided with an internal thread; and the reflector and the heat shield are fixed together by the thread.
  • the threaded connection can closely contact the reflector made of metal material and the heat sink to facilitate heat conduction and quickly dissipate the heat generated by the LED light source in the reflector to the surrounding environment.
  • the cover bottom includes a body and a joint, wherein the outer wall of the joint is provided with an external thread; the reflector comprises a cover body and a joint, and the inner wall of the joint is provided with an internal thread; the cover bottom and the reflector are fixed by the thread together.
  • the bottom of the cover and the reflector and the bottom of the heat sink are in close contact, so that heat can be quickly conducted from the inside of the reflector.
  • the bottom of the cover of the heat dissipation cover is provided with three or more air holes. Due to the structural characteristics of MR16 Most of the heat is concentrated in the bottom of the cover, so the air holes are formed at the bottom of the heat sink near the bottom of the cover, which is beneficial to the rapid dissipation of heat.
  • the air holes at the bottom of the cover of the heat dissipation cover are evenly distributed at the bottom of the cover body, so that the heat can be uniformly emitted.
  • the shape of the air hole in the bottom of the cover of the heat dissipation cover is circular, and the shape is easy to process and is relatively beautiful.
  • the shape of the pores may be rectangular, elliptical or the like as needed.
  • the top of the cover of the reflector is provided with two or more air holes, so as to transfer the heat in the reflector to the heat sink and then dissipate through the heat shield.
  • the air vents at the top end of the cover of the reflector are evenly distributed at the top end of the cover, so as to create a chimney effect, which enhances the convection of the air and accelerates the dissipation of heat.
  • the shape of the air holes at the top end of the cover of the reflector is circular, and the shape is easy to process and is relatively beautiful.
  • the shape of the pores may be rectangular, elliptical or the like as needed.
  • the heat sink has a height of 26 mm to 100 mm. Increasing the height of the heat sink increases the heat sink area for better heat dissipation.
  • FIG. 1 is a perspective view of a perspective view of a background art of the present invention
  • FIG. 2 is a perspective exploded view of the present invention
  • 3 is a perspective view of a heat dissipation cover of the present invention
  • FIG. 4 is a plan view of the heat dissipation cover of the present invention
  • FIG. 5 is a schematic cross-sectional view of the heat dissipation cover of the present invention
  • 7 is a schematic cross-sectional view of a reflector of the present invention
  • FIG. 8 is a plan view of a reflector of the present invention
  • FIG. 9 is a schematic perspective view of a cover of the present invention
  • the heat sink device further includes a cylindrical shape a heat dissipation cover (2) made of a metal material, the heat dissipation cover (2) being disposed outside the reflection cover (1) and covering the reflection cover (1) therein, and the heat dissipation cover (2) )
  • the cover (3) and the heat shield (2) are made of metal materials and have good thermal conductivity. Therefore, the heat emitted by the spotlights is quickly dispersed by the reflector (1) and the heat shield (2), and the heat dissipation speed and efficiency are greatly improved.
  • the reflector (1) comprises a cover (11) and a joint (12), the outer wall of the joint (12) is provided with an external thread (121); the heat shield (2) comprises a cover (21) and a joint (22) The inner wall of the joint (22) is provided with an internal thread (221); the reflector and the heat shield are fixed together by the above thread.
  • the threaded connection can closely contact the reflector made of metal material and the heat sink to facilitate heat conduction and quickly dissipate the heat generated by the LED light source in the reflector to the surrounding environment.
  • the cover bottom (3) comprises a body (31) and a joint (32), wherein the outer wall of the joint (32) is provided with an external thread (321); the reflector (1) comprises a cover (21) and a joint (22) The head, the inner wall of the joint (22) is provided with internal threads (122); the cover bottom (3) and the reflector (1) are fixed together by the above-mentioned threads.
  • the bottom of the cover (3) and the bottom of the reflector (1) and the heat shield (2) are in close contact, so that heat can be quickly conducted from the inside of the reflector (1).
  • the bottom of the cover of the heat sink cover (2) is provided with three or more air holes (23). Due to the structural characteristics of the MR16 LED light source, most of the heat is concentrated in the bottom of the cover (3), so the air holes are formed at the bottom of the heat dissipation cover (2) near the bottom of the cover (3), which facilitates the rapid dissipation of heat.
  • the air holes (23) at the bottom of the cover of the heat sink cover are evenly distributed at the bottom of the cover body (21) so that heat can be uniformly emitted.
  • the shape of the air hole in the bottom of the cover body (21) of the heat dissipation cover is circular, and the shape is easy to process and is relatively beautiful.
  • the shape of the pores may be rectangular, elliptical or the like as needed.
  • the top end of the cover (11) of the reflector is provided with two or more air holes (13), so as to transfer the heat in the reflector (1) to the heat sink and then dissipate through the heat shield (2).
  • the air holes (13) at the top end of the cover (11) of the reflector are evenly distributed at the top end of the cover, so that the heat can be uniformly emitted.
  • the shape of the air holes (13) at the top end of the cover (11) of the reflector is circular, and the shape is easy to process and beautiful.
  • the shape of the pores may be rectangular, elliptical or the like as needed.
  • the heat sink (2) has a height of 26 mm to 100 mm. Increasing the height of the heat sink increases the heat sink area for better heat dissipation.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

—种 LED射灯的散热装置
技术领域
本发明涉及一种 LED射灯的散热结构，尤其是一种适用于所有型号为 MR16 射灯光源的灯具上的散热结构。
背景技术
散热一向是 LED应用最大的限制之一。 LED在发光的同时也会产生极大的 热量， 而这些热量若不能有效的排出， 将会大大影响 LED产品的性能及使用 寿命
申请号为 095220939的台湾专利公开了一种 MR16的结构如图 1所示， 包括： 一灯杯， 系呈喇叭状并包括一缩小端、 及一扩大端， 该扩大端并凹设 有一容置凹槽； 一底座 （9)， 系组设于该灯杯之该縮小端， 该底座并包括二 电源接点； 一发光二极管光源， 系组设于该灯杯之该容置凹槽内； 一光源驱 动电路板， 系组设于该灯杯之该容置凹槽内， 该光源驱动电路板并分别电连 接至该发光二极管光源、 及该底座之该二电源接点； 一透镜， 系组设于该灯 杯之该容置凹槽内、 并位于该发光二极管光源上方； 以及一灯罩 （1 )， 系盖 合于该灯杯之该扩大端。 所述灯罩采用金属材料制成， 且包括带有多数个散 热鳍片， 灯罩包括罩体和罩底 （3)， 所述罩体同时作为反射罩使用， 所述罩 底用于将 LED光源封在罩体中。 MR16因为这些外围套件的固定尺寸而限制了 外观尺寸， 所以在处理散热问题时会遇到很大的困难。 因此， 目前市场上这 种结构的 MR16大约只能有 1-3瓦的功率， 如果提高功率， 则由于散热不够， 容易烧坏二极管 LED光源， 缩短二极管 LED光源的使用寿命。 发明内容 本发明的目的在于：提供一种目前市场上和传统 MR16灯具有一样尺寸但 又更亮的 LED MR16 , 由于采用了新型的散热结构， 使用寿命更长， 达 35000 小时以上， 功率可以达到 6-15w或以上， 并设计成能完全取代现有的 MR16产 品的外形及尺寸。 本发明所采用的技术方案如下： 一种长寿节能 LED射灯的散热装置， 包 括由金属材料制成的反射罩和罩底， 所述散热装置还包括一筒状的由金属材 料制成的散热罩，该散热罩设于所述反射罩的外面且将所述反射罩罩在其中， 且， 所述散热罩周缘设有多数散热鳍片。
当射灯加入了散热罩后， 由于反射罩、 罩底和散热罩均为金属材料制成， 导热性能很好， 因此射灯散发出的热量很快经反射罩和散热罩分散， 散热速 度和效率大大提高。
所述反射罩包括罩体和接头， 该接头外壁设有外螺纹； 所述散热罩包括 罩体和接头， 该接头内壁设有内螺纹； 所述反射罩和散热罩通过上述螺纹固 定在一起。
螺纹连接能将同样是金属材料制成的反射罩和散热罩紧密接触， 有利于 热的传导， 更快的将反射罩内 LED光源所产生的热量散发到周围环境中。
所述罩底包括一座体和接头， 其中， 该接头外壁设有外螺纹； 所述反射 罩包括罩体和接头， 该接头内壁设有内螺纹； 所述罩底和反射罩通过上述螺 纹固定在一起。
通过上述螺纹结构， 使罩底和反射罩以及散热罩的底部均紧密接触， 这 样热量可以很快的从反射罩内部传导出来。
所述散热罩的罩体底部设有三个以上的气孔。由于 MR16结构上的特点导 致大部分热量均集中在罩底， 因此在靠近罩底的散热罩的底部开设气孔， 有 利于热量的快速散发。
所述散热罩的罩体底部的气孔在所述罩体底部均匀分布， 这样是为了使 热量也能均匀的散发出去。
所述散热罩的罩体底部放入气孔的形状为圆形， 这种形状容易加工， 且 比较美观。 但也可以根据需要将气孔的形状设为长方形、 或椭圆形等。
所述反射罩的罩体顶端设有两个以上的气孔， 这样是为了将反射罩内的 热量传递到散热罩中， 再通过散热罩散发出去。
所述反射罩的罩体顶端的气孔在所述罩体顶端均匀分布， 这样是为了产 生烟囱效应， 使空气对流作用加强， 加速使热量散发出去。
所述反射罩的罩体顶端的气孔的形状为圆形， 这种形状容易加工， 且比 较美观。 但也可以根据需要将气孔的形状设为长方形、 或椭圆形等。
所述散热罩的高度为 26mm-100mm。加高散热罩的高度可以增大散热面积， 以便更好的散热。
本发明的有益效果在于： 本发明通过在原有的 MR16结构上增加散热罩， 增加了 MR16 的散热能力。 这个结构是一个很大的突破， 安装了这种结构的 MR16 LED光源使用寿命更长， 达 35000小时以上， 功率可以达到 6_15w或以 上。 附图说明 图 1为本发明背景技术的立体结构示意图； 图 2 为本发明的立体分解示意图； 图 3为本发明的散热罩的立体结构示意图； 图 4为本发明的散热罩的俯视图； 图 5为本发明的散热罩的剖面示意图； 图 6为本发明的反射罩的立体结构示意图； 图 7为本发明的反射罩的剖面示意图； 图 8为本发明的反射罩的俯视图； 图 9为本发明的罩底的立体结构示意图； 图 10为本发明的罩底的剖面示意图； 图 11为本发明的罩底的俯视图。 图中， 1、 反射罩； 11、 反射罩罩体； 12、 反射罩接头； 121、 螺纹；
122、 螺纹； 13、 反射罩气孔； 2、 散热罩； 21、 散热罩罩体； 22、 散热罩接 头； 221、 螺纹； 23、 散热罩气孔； 24、 散热鳍片； 3、 罩底； 31、 座体； 32、 罩底接头； 321、 螺纹。 具体实施方式 下面结合附图和实施例进一歩说明本发明。 如图 1一图 11所示的一种长 寿节能 LED射灯的散热装置，包括由金属材料制成的反射罩（1 )和罩底（3 )， 所述散热装置还包括一筒状的由金属材料制成的散热罩 （2 )， 该散热罩 (2) 设于所述反射罩（1)的外面且将所述反射罩（1)罩在其内，且，所述散热罩（2 ) 周缘设有多数散热鳍片 （24)。
当射灯加入了散热（2 )罩后， 由于反射罩（1 )、 罩底（3 )和散热罩（2 ) 均为金属材料制成，导热性能很好， 因此射灯散发出的热量很快经反射罩（1) 和散热罩 （2) 分散， 散热速度和效率大大提高。
所述反射罩 （1) 包括罩体 （11) 和接头 （12)， 该接头 （12) 外壁设有 外螺纹 （121); 所述散热罩 （2)包括罩体 （21) 和接头 （22)， 该接头 （22) 内壁设有内螺纹 （221); 所述反射罩和散热罩通过上述螺纹固定在一起。
螺纹连接能将同样是金属材料制成的反射罩和散热罩紧密接触， 有利于 热的传导， 更快的将反射罩内 LED光源所产生的热量散发到周围环境中。
所述罩底 （3) 包括一座体 （31) 和接头 （32)， 其中， 该接头 （32) 外 壁设有外螺纹 （321); 所述反射罩 （1) 包括罩体 （21) 和接 （22) 头， 该接 头 （22) 内壁设有内螺纹 （122); 所述罩底（3)和反射罩（1)通过上述螺纹固 定在一起。
通过上述螺纹结构， 使罩底 （3) 和反射罩 （1) 以及散热罩 (2)的底部均 紧密接触， 这样热量可以很快的从反射罩（1)内部传导出来。
所述散热罩 (2)的罩体底部设有三个以上的气孔 (23)。 由于 MR16 LED光 源结构上的特点导致大部分热量均集中在罩底 (3)， 因此在靠近罩底 (3)的散 热罩 (2)的底部开设气孔， 有利于热量的快速散发。
所述散热罩的罩体底部的气孔 (23)在所述罩体 (21)底部均匀分布， 这样 是为了使热量也能均匀的散发出去。
所述散热罩的罩体 (21)底部放入气孔的形状为圆形，这种形状容易加工， 且比较美观。 但也可以根据需要将气孔的形状设为长方形、 或椭圆形等。
所述反射罩的罩体 (11)顶端设有两个以上的气孔（13)， 这样是为了将反 射罩（1)内的热量传递到散热罩中， 再通过散热罩 (2)散发出去。 所述反射罩的罩体 (11)顶端的气孔 （13 ) 在所述罩体顶端均匀分布， 这 样是为了使热量能均匀的散发出去。
所述反射罩的罩体（11)顶端的气孔 （13 ) 的形状为圆形， 这种形状容易 加工， 且比较美观。 但也可以根据需要将气孔的形状设为长方形、 或椭圆形 等。
所述散热罩 (2)的高度为 26mm-100mm。 加高散热罩的高度可以增大散热 面积， 以便更好的散热。

Claims

权 利 要 求 书
1、一种长寿节能 LED射灯的散热装置， 包括由金属材料制成的反射罩和 罩底， 其特征在于： 所述散热装置还包括一筒状的由金属材料制成的散热罩， 该散热罩设于所述反射罩的外面且将所述反射罩罩在其中， 且， 所述散热罩 周缘设有多数散热鳍片。
2、 根据权利要求 1所述的长寿节能 LED射灯的散热装置， 其特征在于： 所述反射罩包括罩体和接头， 该接头外壁设有外螺纹； 所述散热罩包括罩体 和接头， 该接头内壁设有内螺紋； 所述反射罩和散热罩通过上述螺紋固定在 一起。
3、根据权利要求 1或 2所述的长寿节能 LED射灯的散热装置， 其特征在 于： 所述罩底包括一座体和接头， 其中， 该接头外壁设有外螺紋； 所述反射 罩包括罩体和接头， 该接头内壁设有内螺紋； 所述罩底和反射罩通过上述螺 紋固定在一起。
4、根据权利要求 1或 2或 3所述的长寿节能 LED射灯的散热装置， 其特 征在于： 所述散热罩的罩体底部设有三个以上的气孔。
5、 根据权利要求 4所述的长寿节能 LED射灯的散热装置， 其特征在于： 所述气孔在所述罩体底部均勾分布。
6、 根据权利要求 5所述的长寿节能 LED射灯的散热装置， 其特征在于： 所述气孔的形状为圆形。
7、根据权利要求 1至 6任一权利要求所述的长寿节能 LED射灯的散热装 置， 其特征在于： 所述反射罩的罩体顶端设有两个以上的气孔。
8、 根据权利要求 7所述的长寿节能 LED射灯的散热装置， 其特征在于： 所述气孔在所述罩体顶端均勾分布。
9、 根据权利要求 8所述的长寿节能 LED射灯的散热装置， 其特征在于： 所述气孔的形状为圆形。
10、 根据权利要求 1或 2所述的长寿节能 LED射灯的散热装置， 其特征 在于： 所述散热罩的高度为 26mm-100
PCT/CN2008/073079 2008-09-05 2008-11-14 一种led射灯的散热装置 WO2010025599A1 (zh)

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