CN101614349A - 发光二极管路灯 - Google Patents

发光二极管路灯 Download PDF

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Publication number
CN101614349A
CN101614349A CN200810302288A CN200810302288A CN101614349A CN 101614349 A CN101614349 A CN 101614349A CN 200810302288 A CN200810302288 A CN 200810302288A CN 200810302288 A CN200810302288 A CN 200810302288A CN 101614349 A CN101614349 A CN 101614349A
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heat
circuit board
light emitting
emitting diode
conducting plate
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郭原隆
李汉隆
林大为
骆世平
简士哲
余泰成
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Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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Priority to CN200810302288A priority Critical patent/CN101614349A/zh
Priority to US12/430,778 priority patent/US20090316400A1/en
Publication of CN101614349A publication Critical patent/CN101614349A/zh
Pending legal-status Critical Current

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    • 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
    • F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
    • 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
    • F21V29/717—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 using split or remote units thermally interconnected, e.g. by thermally conductive bars or heat pipes
    • 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
    • F21V29/763—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 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/05—Optical design plane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/103—Outdoor lighting of streets or roads
    • 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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  • 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)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

一种发光二极管路灯，其包括一个发光二极管光源，一个扩散板以及一个散热模组。该发光二极管光源包括一个电路板和多个发光二极管，该电路板包括第一表面及与该第一表面相对的第二表面，该多个发光二极管设置在该电路板的第一表面上并与该电路板电性连接。该扩散板设置于电路板的第一表面一侧。该散热模组包括一个导热板，多个热管以及多个散热鳍片，该导热板包括一接合面及一与该接合面相对的散热面，该多个热管的蒸发端与该导热板的散热面热连接，该多个热管的冷凝端远离该导热板并穿设于多个散热鳍片中。该发光二极管光源的电路板固定在该导热板的接合面上以与导热板形成热连接，且电路板的第二表面朝向该接合面。

Description

发光二极管路灯
技术领域
本发明涉及一种发光二极管路灯。
背景技术
现在，发光二极管(Light Emitting Diode，LED)已经被广泛应用到很多领域，尤其是广泛应用于路灯。在此，一种新型发光二极管可参见Daniel A.Steigerwald等人在文献IEEEJournal on Selected Topics in Quantum Electronics，Vol.8，No.2，March/April 2002中的Illumination With Solid State Lighting Technology一文。
由于发光二极管路灯的工作时间一般较长，其产生的热量也较多，当温度达到一定程度时，将会导致低落的内部量子效应并且明显缩短其寿命。因此，通常的采用发光二极管的路灯除发光模组之外还包括散热模组。所述发光模组通常包括金属框、收容在金属框内的电路板及设置在电路板上的发光二极管。所述金属框用以固定该电路板及发光二极管。所述散热模组通常为散热鳍片等，该散热模组可及时散除发光模组产生的热量，从而保证路灯的正常工作。然而，该种采用发光二极管的路灯结构较为复杂且重量较大，其使得该种路灯的组装难度较高，并且对该种路灯的安装以及维修造成极大不便。
有鉴于此，提供一种结构简单、重量轻的发光二极管路灯实为必要。
发明内容
以下将以实施例说明一种结构简单、重量轻的发光二极管路灯。
一种发光二极管路灯，其包括一个发光二极管光源，一个扩散板以及一个散热模组，该发光二极管光源包括一个电路板和多个发光二极管，该电路板包括第一表面及与该第一表面相对的第二表面，该多个发光二极管设置在该电路板的第一表面上并与该电路板电性连接；该扩散板设置于电路板的第一表面一侧；该散热模组包括一个导热板，多个热管以及多个散热鳍片，该导热板包括一接合面及一与该接合面相对的散热面，该多个热管的蒸发端与该导热板的散热面热连接，该多个热管的冷凝端远离该导热板并穿设于多个散热鳍片中；该发光二极管光源的电路板固定在该导热板的接合面上以与导热板形成热连接，且电路板的第二表面朝向该接合面。
相对于现有技术，所述发光二极管路灯的电路板固定在导热板上并与该导热板热接触，从而该发光二极管光源无需采用金属框固定，简化了发光二极管路灯的结构并减轻了发光二极管路灯的重量，同时还能达到良好的散热效果。
附图说明
图1是本发明实施例提供的发光二极管路灯的立体示意图。
图2是图1中发光二极管路灯的结构分解图。
图3是本发明实施例提供的具有交错排布发光二极管的电路板的示意图。
图4是本发明实施例提供的设置有反射膜或反射板的电路板的侧视图。
具体实施方式
请参见图1和图2，本发明实施方式提供的发光二极管路灯10，其包括：一个发光二极管光源11、一个扩散板12以及一个散热模组13。
该发光二极管光源11包括一个电路板112和多个发光二极管114。该电路板112包括一第一表面1120以及一第二表面1122。该第一表面1120与第二表面1122相对设置。该电路板112内部形成有电路(图未示)，用于向多个发光二极管光源114提供电力。该多个发光二极管114设置在该电路板112的第一表面1120上，并与形成在电路板112内部的电路电性连接。该电路板可为金属核心印刷电路板(Metal Core Printed Circuit Board，MCPCB)。
该扩散板12设置在电路板112的第一表面1120一侧，用于扩散从多个发光二极管114发出的光线。该扩散板12可为一内部分散有大量微粒子之树脂层，从而光线在经过该扩散板12时会产生反射、散射的现象，进而造成光学扩散的效果。当然，该扩散板12也可为其他结构，如形成有微结构的透明板、分散有大量微粒子之玻璃板等。
该散热模组13包括一组散热鳍片131、多个热管132和一个导热板133。该导热板133由具有良好的导热性能的铝等金属制成，其包括一散热面1330以及一与该散热面1330相对设置的接合面1332。该电路板112固定在导热板133的接合面1332上，且该导热板133的接合面1332与该电路板112的第二表面1122相对并形成热连接。该导热板133的散热面1330与该多个热管132的蒸发端1320热连接。该多个热管132的冷凝端1322远离该导热板133，且嵌在该组散热鳍片131内并与其热连接。该多个热管132相互平行且间隔设置。
该多个发光二极管114工作时产生的热量由该电路板112传给该导热板133，从而避免了大量的热量聚集在该电路板112上，而造成温度过高而影响该多个发光二极管114的正常工作。该导热板133将吸收的热量均匀的传送给与该导热板133热连接的该多个热管132的蒸发端1320。该多个热管132的工作流体在蒸发端1320吸收上述热量而变成气态，气态的工作流体到达冷凝端1322释放所吸收的热量并转变成液态，再经由毛细结构层流回蒸发端1320。该冷凝端1322嵌在该组散热鳍片131内并与该组散热鳍片131形成热连接，该组散热鳍片131直接与空气进行热交换，达到散热的目的。
优选的，为提高电路板112与该导热板133之间的热传递效率，电路板112的第二表面1122与导热板133的接合面1332通过散热膏形成热连接。
参见图3，为进一步提高发光二极管114的出光均匀度，可将发光二极管114在电路板112的第一表面1120上交错分布，也即：多个发光二极管114沿图3所示y方向排成多列，每一列的发光二极管114在图3所示x方向上以等间距D排列，任意相邻两列发光二极管114在X方向上错开一预定间隔d。
参见图4，为提高发光二极管114所发出的光的利用效率，可在电路板112的第一表面1120上设置一个反射膜或反射板14，该反射膜或反射板14覆盖该第一表面1120上的未被发光二极管114覆盖的位置。
所述发光二极管路灯10的电路板112固定在导热板133上并与该导热板133热接触，从而该发光二极管光源11无需采用金属框固定，简化了发光二极管路灯10的结构并减轻了发光二极管路灯10的重量，同时还能达到良好的散热效果。
另外，本领域技术人员还可于本发明精神内做其它变化，如适当变更发光二极管114的排布方式，适当变更热管132的形状，适当变更反射膜或反射板14的设置位置等用于本发明的设计，只要其不偏离本发明的技术效果均可。这些依据本发明精神所做的变化，都应包含在本发明所要求保护的范围之内。

Claims (6)

1.一种发光二极管路灯，其包括：
一个发光二极管光源，该发光二极管光源包括一个电路板和多个发光二极管，该电路板包括第一表面及与该第一表面相对的第二表面，该多个发光二极管设置在该电路板的第一表面上并与该电路板电性连接；
一个扩散板，该扩散板设置于电路板的第一表面一侧；
一个散热模组，该散热模组包括一个导热板，多个热管以及多个散热鳍片，该导热板包括一接合面及一与该接合面相对的散热面，该多个热管的蒸发端与该导热板的散热面热连接，该多个热管的冷凝端远离该导热板并穿设于多个散热鳍片中；
该发光二极管光源的电路板固定在该导热板的接合面上以与导热板形成热连接，且电路板的第二表面朝向该接合面。
2.如权利要求1所述的发光二极管路灯，其特征在于，该电路板为金属核心印刷电路板。
3.如权利要求1所述的发光二极管路灯，其特征在于，该多个发光二极管交错排布于电路板的第一表面上。
4.如权利要求1所述的发光二极管路灯，其特征在于，该发光二极管路灯还包括一贴附在电路板第一表面上的反射膜，该反射膜覆盖该电路板第一表面的未被发光二极管覆盖的位置。
5.如权利要求1所述的发光二极管路灯，其特征在于，该导热板为铝板。
6.如权利要求1所述的发光二极管路灯，其特征在于，该电路板的第二表面通过散热膏与导热板的接合面热连接。
CN200810302288A 2008-06-24 2008-06-24 发光二极管路灯 Pending CN101614349A (zh)

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US12/430,778 US20090316400A1 (en) 2008-06-24 2009-04-27 Light emitting diode street light

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