CN102022657A - Led照明灯具 - Google Patents

Led照明灯具 Download PDF

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Publication number
CN102022657A
CN102022657A CN2010106090802A CN201010609080A CN102022657A CN 102022657 A CN102022657 A CN 102022657A CN 2010106090802 A CN2010106090802 A CN 2010106090802A CN 201010609080 A CN201010609080 A CN 201010609080A CN 102022657 A CN102022657 A CN 102022657A
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heat dissipation
dissipation base
led lighting
led
heat
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章绍汉
石伏秋
曹青山
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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 CN2010106090802A priority Critical patent/CN102022657A/zh
Publication of CN102022657A publication Critical patent/CN102022657A/zh
Priority to US13/191,476 priority patent/US8408750B2/en
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
    • F21V29/70—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
    • 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
    • F21K9/232—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
    • 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
    • F21V19/003—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
    • F21V19/0055—Fastening of light source holders, e.g. of circuit boards or substrates holding light sources by screwing
    • 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
    • F21V29/767—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 directions perpendicular to the light emitting axis
    • 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
    • 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
    • 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
    • F21V29/507—Cooling arrangements characterised by the adaptation for cooling of specific components of means for protecting lighting devices from damage, e.g. housings
    • 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
    • F21V29/745—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades the fins or blades being planar and inclined with respect to the joining surface from which the fins or blades extend
    • 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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • 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)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

一种LED照明灯具，包括散热底座、LED基板、驱动电路板以及电源连接器，所述LED基板上设置有多个发光二极管。所述散热底座一端与电源连接器连接，另一端与LED基板相固定，驱动电路板收纳于该散热底座内；所述散热底座侧壁上设有导流孔。LED照明灯具工作时，开设于散热底座侧面的导流孔使散热底座内部形成一个内流场，冷空气从靠近电源基板的导流孔进入，从靠近电源连接器的导流孔排出。进入散热底座内部的冷空气可以对散热底座内侧壁以及驱动电路板进行热交换。

Description

LED照明灯具
技术领域
本发明涉及一种LED照明灯具，特别涉及一种具有散热结构的LED照明灯具。
背景技术
和传统光源相比，发光二极管(LED)具有较高之发光效率(光源温度较一般灯泡低)、低辐射、低耗电、寿命长、低电压、启动快速、环保、抗震抗压、灯具可小型化等优点，以LED作为光源的照明装置目前被广泛应用于各种照明，如室内照明、室外照明、可携式照明(如手电筒)、情境照明等应用中。LED在工作时会产生热量，带有这些热量的空气与周围环境中的空气之间的流通进行散热，但此散热方式效果有限，特别在LED长时间工作后，仅用此种散热方式不能使产生的热量及时疏散，使LED温度升高，严重影响LED的发光效率及LED灯具的使用寿命。
为了解决LED灯具的散热问题，现有技术中多采用在灯具壳体上增设散热鳍片，此种方式虽然有效的增加了散热面积，但是会增加LED灯具的体积和重量，另外过小的鳍片间距会引起灰尘杂质等在鳍片间隙内沉积，导致散热能力降低。
发明内容
有鉴于此，本发明提供一种轻便且散热良好的LED照明灯具。
一种LED照明灯具，包括散热底座、LED基板、驱动电路板以及电源连接器，所述LED基板上设置有多个发光二极管。所述散热底座一端与电源连接器连接，另一端与LED基板相固定，驱动电路板收纳于该散热底座内；所述散热底座侧壁上设有导流孔。
LED照明灯具工作时，开设于散热底座侧面的导流孔使散热底座内部形成一个内流场，冷空气从靠近电源基板的导流孔进入，从靠近电源连接器的导流孔排出。进入散热底座内部的冷空气可以对散热底座内侧壁以及驱动电路板进行热交换。
附图说明
图1是本发明中LED照明灯具的立体图。
图2是本发明中LED照明灯具的爆炸图。
图3是本发明中LED照明灯具的散热底座的结构示意图。
图4是本发明中LED照明灯具的驱动模组的结构示意图。
图5是图1中LED照明灯具的散热方式示意图。
主要元件符号说明
 LED照明灯具   100
 灯罩   10
 散热底座   20
 第一端部   21
 第二端部   22
 凹部   23
 散热鳍片   24
 导流孔   25
 电源连接器   30
 LED基板   40
 发光二极管   41
 螺丝   42
 驱动模组   50
 驱动电路板   51
 上盖体   52
 下盖体   53
 螺丝   54
 开口   55
具体实施方式
请参阅图1，LED照明灯具100包括灯罩10、散热底座20以及电源连接器30。灯罩10与电源连接器30分别固定在散热底座20的两端。电源连接器30用来与电源相连接，电源连接器30为通用的电源接口，如螺口电源连接器或者卡口电源连接器。
请参阅图2，LED照明灯具100还包括LED基板40和驱动模组50。所述LED基板40上还安装有多个发光二极管41。驱动模组50与电源连接器30和LED基板40电连接，所述驱动模组50通过电源连接器30从外界获取电能以驱动发光二极管41发光。
灯罩10固定在散热底座20上，发光二极管41发出的光线穿过灯罩10射出到LED照明灯具100的外部。灯罩10可以通过螺纹连接、卡扣、胶粘等固定方式与散热底座20相固定。在本实施方式中，灯罩10采用透明塑胶为基材，并在其中混合适当比例的光扩散粒子，增加光散射效果并使光柔和化。在其他实施方式中，还可以在所述灯罩10内表面设置粗糙表面来增加灯罩的光漫散射效果。
请一并结合图3，在本实施方式中，散热底座20为空心的类圆锥体，该类圆锥体由两个对称的半圆锥体相对接而成。散热底座20包括第一端部21和第二端部22，该第一端部21的直径大于第二端部22的直径。该散热底座20的第一端部21上形成有一凹部23，所述LED基板40固定在凹部23内。在本实施方式中，LED基板40通过螺丝42固定在凹部23内。所述第二端部22与电源连接器30相固定。散热底座20的外侧面还设置有相互间隔一定距离的多个散热鳍片24，所述散热鳍片24用来增加散热底座20的表面积，从而增加了与空气的接触面积，进而提高了散热效率。散热底座20的侧边还设置有导流孔25，在本实施方式中，所述散热底座20包括至少一列沿径向分布于散热底座20的侧边的导流孔25，所述至少一列导流孔25中导流孔25的数量至少为两个。
在本实施方式中，散热底座20采用导热性佳的散热材料制成，如铝合金等。优选的，所述LED基板40与散热底座20的第一端部21之间还设有导热介质(图未示出)，用于将LED基板40工作时散发的热量均匀地传导至散热底座20。在本实施方式中，LED基板40与散热底座20的第一端部21之间的导热介质是导热胶带。
请一并结合图2和图4，驱动模组50收纳于散热底座20的内部。所述驱动模组50包括驱动电路板51、上盖体52以及下盖体53，该驱动电路板51容纳于上盖体52与下盖体53之间。所述上盖体52通过螺丝54锁附于下盖体53上，该上盖体52和下盖体53可以对驱动电路板起到绝缘和防水保护的作用。所述上盖体52和下盖体53上均设有开口55，该开口55供导线(图未示出)穿出，从而允许驱动电路板51与LED基板40以及电源连接器30电连接。
请参考图5，LED照明灯具100工作时，发光二极管41产生的热量经由导热介质传导至散热底座20的第一端部21，再由第一端部21传导至散热鳍片24。散热鳍片24与空气进行热交换，从而将热量散发散热。同时开设于散热底座20侧面的导流孔25使散热底座20内部形成一个内流场，冷空气从靠近第一端部21的导流孔25进入，从靠近第二端部22的导流孔25排出。进入散热底座20内部的冷空气可以对散热底座20内侧壁以及驱动模组50进行热交换，有效提升散热效率。
本技术领域的普通技术人员应当认识到，以上的实施方式仅是用来说明本发明，而并非用作为对本发明的限定，只要在本发明的实质精神范围之内，对以上实施例所作的适当改变和变化都落在本发明要求保护的范围之内。

Claims (9)

1.一种LED照明灯具，包括散热底座、LED基板、驱动电路板以及电源连接器，所述LED基板上设置有多个发光二极管，其特征在于，所述散热底座一端与电源连接器连接，另一端与LED基板相固定，驱动电路板收纳于该散热底座内；所述散热底座侧壁上设有导流孔。
2.如权利要求1所述的LED照明灯具，其特征在于：所述LED基板与散热底座之间还设置有导热介质，LED基板产生的热量经由导热介质传导至散热底座。
3.如权利要求2所述的LED照明灯具，其特征在于：所述导热介质是石墨导热片、导热胶带或者陶瓷导热板中的一种。
4.如权利要求1所述的LED照明灯具，其特征在于：还包括一灯罩，该灯罩固定于所述散热底座上，发光二极管发出的光线穿过灯罩射出到LED照明灯具的外部。
5.如权利要求4所述的LED照明灯具，其特征在于：所述灯罩采用混有光扩散粒子的透明塑胶为基材。
6.如权利要求4所述的LED照明灯具，其特征在于：所述灯罩表面贴附有光扩散薄膜。
7.如权利要求1所述的LED照明灯具，其特征在于：所述散热底座侧面设置有相互间隔一定距离的多个散热鳍片。
8.如权利要求1所述的LED照明灯具，其特征在于，所述散热基座包括至少一列沿径向分布于散热底座的侧边的导流孔。
9.如权利要求8所述的LED照明灯具，其特征在于，所述至少一列导流孔中每列导流孔的数量至少为两个。
CN2010106090802A 2010-12-28 2010-12-28 Led照明灯具 Pending CN102022657A (zh)

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CN2010106090802A CN102022657A (zh) 2010-12-28 2010-12-28 Led照明灯具
US13/191,476 US8408750B2 (en) 2010-12-28 2011-07-27 LED illuminating device

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CN2010106090802A CN102022657A (zh) 2010-12-28 2010-12-28 Led照明灯具

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