WO2013075441A1 - 一种方便散热的led灯 - Google Patents

一种方便散热的led灯 Download PDF

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Publication number
WO2013075441A1
WO2013075441A1 PCT/CN2012/073361 CN2012073361W WO2013075441A1 WO 2013075441 A1 WO2013075441 A1 WO 2013075441A1 CN 2012073361 W CN2012073361 W CN 2012073361W WO 2013075441 A1 WO2013075441 A1 WO 2013075441A1
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WO
WIPO (PCT)
Prior art keywords
lamp
heat
cup
dissipating
heat dissipation
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Application number
PCT/CN2012/073361
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English (en)
French (fr)
Inventor
陈方
沈锦祥
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生迪光电科技股份有限公司
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Application filed by 生迪光电科技股份有限公司 filed Critical 生迪光电科技股份有限公司
Priority to EP12851574.9A priority Critical patent/EP2784383B1/en
Publication of WO2013075441A1 publication Critical patent/WO2013075441A1/zh
Priority to US14/275,011 priority patent/US9194572B2/en

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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
    • F21K9/90—Methods of manufacture
    • 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
    • F21V23/007—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 enclosed in a casing
    • F21V23/009—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 enclosed in a casing the casing being inside the housing of the lighting device
    • 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
    • F21V29/506—Cooling arrangements characterised by the adaptation for cooling of specific components of globes, bowls or cover glasses
    • 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
    • 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
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • 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
    • 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]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49124—On flat or curved insulated base, e.g., printed circuit, etc.
    • Y10T29/4913—Assembling to base an electrical component, e.g., capacitor, etc.

Definitions

  • the invention relates to the technical field of LED illumination, in particular to an LED lamp which is convenient for heat dissipation.
  • the high-power LED lighting lamp of the prior art generally adopts a hollow heat-dissipating lamp cup.
  • the upper part of the lamp cup is provided with a lamp holder for fixing the LED lighting component, and the driving power supply shell is sleeved in the heat-dissipating lamp cup to drive the upper and lower ends of the power supply casing. Both are closed, and the inner wall of the driving power supply case is in close contact with the inner wall of the driving power supply receiving chamber.
  • the heat of the LED light source is transmitted to the heat sink cup through the lamp holder and then dissipated, because the heat sink lamp cup itself carries the heat of the LED light source in the work of the lamp, so the drive circuit board is in the high temperature environment in the heat sink cup.
  • the heat is difficult to be effectively dissipated, and over time, it will affect the normal operation of the electronic components of the driving power source, thereby affecting the overall service life of the LED lighting.
  • the present invention is directed to the above-mentioned deficiencies in the prior art, and provides a shunt heat-dissipating LED lamp, the LED
  • the lamp adopts an internal and external shunt heat dissipation structure.
  • the internal heat dissipation means that a part of the heat generated by the driving power source and the LED light source is taken away by the internal ventilation of the lamp body, and the external heat dissipation refers to the LED.
  • the heat of the light source to the heat sink cup is dissipated by the natural convection; thus not only effectively reducing the temperature of the lamp cup casing, protecting the hands of the person from being burnt, but also dissipating heat from the driving power source, thereby reducing the temperature of the heat sink cup to the power source.
  • the effect is to reduce the ambient temperature of the power supply and extend the service life of the power supply.
  • the lamp comprises a lamp cap, a heat dissipating lamp cup, a driving power supply shell and a bulb, wherein the heat dissipating lamp cup has a hollow structure, and the heat dissipating lamp cup is sleeved with the driving power source shell, the driving power supply shell and the heat dissipating There is a ventilation gap between the inner walls of the lamp cup, and a lamp holder above the upper surface of the lamp cup is arranged on the upper part of the heat dissipation lamp cup, and a substrate is arranged on the side wall of the lamp holder, and the substrate is fixed on the substrate LED
  • the light source has a ventilation passage extending through the entire lamp holder from above and below, and a ventilation hole is arranged at the top of the bulb, the gap is in air communication with the air passage of the lamp holder, and the lower part of the gap communicates with the outside air, and the upper part of the air passage passes through the bulb
  • the vents are in communication with the outside air
  • the shape of the outer contour of the socket is any one of a polyhedron, a cylinder or a truncated cone.
  • the lamp holder adopts the above three-dimensional shape, and can enlarge the illumination angle of the whole lamp to achieve an illumination effect similar to that of an incandescent lamp.
  • the outer contour of the socket is in the shape of a prism, and a substrate is fixed on each side of the socket.
  • the heat conducted to the socket is dissipated, and preferably, an inner fin disposed in the longitudinal direction is provided in the air passage of the socket.
  • a receiving ring that abuts against the bottom of the heat dissipating lamp cup is fixed on the outer circumference of the driving power source housing, and a plurality of holes for keeping air flowing between the outside and the lower portion of the gap are provided in the receiving ring in the circumferential direction.
  • the receiving ring can not only support the heat-dissipating lamp cup, but also has a plurality of holes formed in the receiving ring, so that the lower part of the gap can be circulated through the hole to the outside air for heat dissipation.
  • At least two ribs for limiting the casing are provided on the side wall of the driving power source casing in a circumferential direction, and the ribs abut against the inner wall of the heat dissipating lamp cup.
  • the arrangement of the ribs not only limits the driving power supply housing, but also facilitates the installation thereof, and also leaves a gap between the housing and the inner wall of the lamp cup to form an air flow path.
  • a plurality of longitudinally disposed outer fins are circumferentially distributed on the outer circumference of the heat sink cup.
  • a screw hole is arranged on the top of the rib, and the rib is connected to the heat sink cup by a screw.
  • an opening is provided in the top of the bulb, an annular ring is arranged in the opening, and a ventilation cover is arranged in the annular ring, and the ventilation hole is arranged on the ventilation cover.
  • the air passage is disposed inside the lamp body, that is, a gap is formed between the driving power source housing and the inner wall of the lamp cup to form an air flow passage, and the lamp holder is provided with a ventilation passage penetrating the lamp holder vertically, the gap
  • the air is kept in air communication with the air passage, and the lower part of the air gap and the upper part of the air passage are connected with the outside air, so that the air enters the heat generated by the driving power source and the LED light source, thereby reducing the ambient temperature of the power supply and ensuring the service life. It can also effectively reduce the temperature of the lamp cup casing and protect people's hands from being burnt.
  • FIG. 1 is a perspective view of an LED lamp in an embodiment of the present invention
  • FIG. 2 is a perspective view of another direction of an LED lamp according to an embodiment of the present invention.
  • FIG. 3 is a schematic exploded view showing the structure of an LED lamp according to an embodiment of the present invention.
  • Figure 4 is a cross-sectional view taken along line A-A of Figure 1;
  • FIG. 5 is a schematic diagram of the heat dissipation effect of the LED lamp in the embodiment.
  • a convenient heat-dissipating LED lamp of the embodiment includes a lamp cap 1 and a heat-dissipating lamp cup 2 And driving the power supply case 3 and the bulb 4, the heat dissipation lamp cup 2 has a hollow structure inside, and the heat dissipation lamp cup 2 is sleeved with the driving power source housing 3, and the driving power source is installed in the driving power source housing 5 a cover 20 is disposed on the upper cover of the driving power supply housing 3, and a plurality of longitudinally disposed outer fins 12 are circumferentially distributed on the outer circumference of the heat dissipation lamp cup 2; the driving power supply housing 3 and the heat dissipation lamp cup 2 There is a venting gap between the inner walls 6 .
  • the gap 6 is formed such that the outer diameter of the driving power source housing 3 is smaller than the inner diameter of the heat dissipating lamp cup 2 in the driving power source housing 3
  • three ribs 7 for limiting the casing are arranged in the circumferential direction, and the ribs 7 are opposite to the inner wall of the heat-dissipating lamp cup 2, and the rib 7
  • the arrangement maintains a fixed distance between the driving power supply shell and the inner wall of the lamp cup; at the same time, for the convenience of installation and fixing, a screw hole is arranged at the top of the rib 7, and the rib 7 and the heat-dissipating lamp cup 2 are connected by screws, thereby driving the power supply case 3 Connect to the heat sink cup 2.
  • a lamp holder 8 above the upper surface of the lamp cup is arranged on the upper part of the heat dissipation lamp cup 2, and the lamp holder 8 a substrate is disposed on the side wall, and an LED light source is fixed on the substrate.
  • the lamp holder 8 has a prismatic shape, and an aluminum substrate 9 is fixed on each side of the socket 8.
  • Substrate 9 A set of LED light sources 10 are fixed on the substrate, and the base plate 9 and the socket 8 are connected by screws.
  • the illumination angle of the whole lamp is about 300 degrees, which can reach the ENERGY STAR standard and is lighter than the traditional LED lamp. The 180 degree has a larger coverage than the incandescent lamp.
  • the lamp holder 8 is also a hollow structure, and a ventilating passage 11 penetrating the entire lamp holder up and down in the lamp holder 8 is provided in the air passage 11 of the lamp holder 8
  • An inner fin 13 disposed in the longitudinal direction is provided inside.
  • a circular opening 14 is formed in the top of the bulb 4, and an annular ring 15 is formed in the opening 14 in the annular ring 15
  • a ventilation cover 16 is disposed therein, and a plurality of ventilation holes 17 are disposed in the ventilation cover 16, and the upper portion of the ventilation passage 11 is kept in communication with the outside air through the ventilation holes 17.
  • a receiving ring 18 that abuts against the bottom of the heat-dissipating lamp cup 2 is fixed on the outer circumference of the lower portion of the driving power supply case 3, and the receiving ring 18 is received.
  • a plurality of holes 19 for keeping the outside air and the lower portion of the gap 6 in air flow are provided in the circumferential direction, and the driving power source housing 3 is made of a heat conductive plastic to effectively dissipate heat.
  • the upper portion of the gap 6 is in air communication with the lower portion of the air passage 11 and thus constitutes an internal heat dissipation air passage of the entire lamp; As shown, when the lamp is in operation, the heat generated by the driving power source 5 is dissipated into the gap 6, and a part of the heat generated by the LED light source 10 passes through the inner fin of the lamp holder 8 Dissipating into the air passage of the lamp holder, and another part of the heat is transmitted to the outer fin 12 of the heat sink cup through the lamp holder for dissipation; as shown by the direction of the arrow in FIG.
  • the air flow enters through the vent hole, flows through the air passage 11, and the gap 6 Then, it is discharged from the bottom of the gap 6, so that the heat in the air passage and the air gap is taken away; and the heat of the outer heat sink 12 of the heat sink cup is naturally convected by the air, and the air direction is as shown by the direction of the arrow in FIG.
  • the whole lamp is combined with heat dissipation inside and outside, It not only reduces the ambient temperature of the power supply, but also guarantees its service life. It also maximizes the heat generated by the LED light source, effectively reducing the temperature of the lamp cup casing, and further protecting the hands from being burnt.
  • the LED lamp of the present invention can also be equipped with a fan to further enhance the heat dissipation effect.

Abstract

一种方便散热的LED灯，包括灯头（1）、散热灯杯（2）、驱动电源壳体（3）和泡壳（4）。散热灯杯（2）内部为中空结构，散热灯杯（2）与驱动电源壳体（3）套接在一起，驱动电源壳体（3）与散热灯杯（2）内壁之间留有通风的空隙（6）。驱动电源壳体（3）下部设有与散热灯杯（2）底部相抵的承接环（18），承接环（18）上设有多个用于使外部空气与孔隙（6）保持空气流通的孔洞（19）。散热灯杯（2）上部设有高出灯杯（2）上表面的灯座（8），灯座（8）侧壁上设有基板（9），基板（9）上固定有LED光源（10），灯座（8）内设有上下贯通整个灯座（8）的通风道（11）。泡壳（4）顶部设有通风孔（17）。泡壳（4）的通风孔（17）、灯座（8）的通风道（11）、空隙（6）、孔洞（19）形成与外界空气连通的空气流道。该LED灯内部设置了空气流道，使空气进入并带走驱动电源及LED光源产生的热量，降低了电源工作的环境温度，保证了其使用寿命。

Description

一种方便散热的LED灯 技术领域
本发明涉及 LED 照明技术领域，特别涉及一种方便散热的 LED 灯。
背景技术
LED 灯工作是否稳定，品质好坏，与灯体本身散热至关重要，以往人们都着眼于LED光源的散热，通过改进散热灯杯的形状、构造、材质等以优化其散热性能，但通常对LED驱动电源的散热考虑不周。
例如，现有技术的大功率LED照明灯一般采用中空的散热灯杯，灯杯上部设有固定LED发光组件的灯座，驱动电源壳体套在散热灯杯内，驱动电源壳体的上下端均为封闭状态，而驱动电源壳体的内壁紧贴于驱动电源容纳腔的内壁。灯具工作时，LED光源的热量通过灯座传至散热灯杯再散发出去，因为在灯具工作中散热灯杯本身已携带了LED光源的热量，所以驱动电路板处于散热灯杯内的高温环境中，热量难以有效散发，久而久之会影响驱动电源的电子元器件的正常工作，从而影响LED照明灯整体的使用寿命。
 技术解决方案
本发明针对上述现有技术中存在的不足，提供了一种分流散热的 LED 灯，该 LED 灯采用内外分流散热结构，内散热是指通过灯体内部通风将驱动电源及 LED 光源产生的一部分热量带走，外散热是指 LED 光源导热到散热灯杯外壳的热量由自然对流散走；从而不仅有效降低灯杯外壳的温度，保护人的双手不被烫伤，还可以对驱动电源进行散热，从而减轻散热灯杯对电源的温度影响，降低电源的环境温度，延长了电源的使用寿命。
本发明的技术方案是这样实现的：
一种方便散热的 LED 灯，包括灯头、散热灯杯、驱动电源壳体和泡壳，所述的散热灯杯内部为中空结构，散热灯杯与驱动电源壳体套接在一起，所述的驱动电源壳体与散热灯杯内壁之间留有通风的空隙，在散热灯杯上部设有高出灯杯上表面的灯座，灯座侧壁上设有基板，基板上固定有 LED 光源，灯座内设有上下贯通整个灯座的通风道，在泡壳顶部设有通风孔，所述空隙与灯座的通风道空气连通，空隙下部与外界空气连通，通风道上部通过泡壳的通风孔与外界空气连通。
作为优选，所述的灯座外轮廓形状为多面体、圆柱体或圆台体中的任一种形状。灯座采用上述立体形状，可扩大整灯的发光角度，达到近似于白炽灯的照明效果。
作为优选，所述的灯座外轮廓形状为棱台形，在灯座的每个侧面上固定有一块基板。
为了进一步对 LED 传导至灯座的热量进行散热，作为优选，在灯座的通风道内设有沿纵向布置的内散热片。
作为优选，在驱动电源壳体外周上固定设有与散热灯杯底部相抵的承接环，在承接环上沿周向设有多个使外界与所述的空隙下部保持空气流通的孔洞。承接环不仅可以托住散热灯杯，在承接环上开设了多个孔洞，使所述的空隙下部可以通过孔洞与外界空气流通以进行散热。
作为优选，在驱动电源壳体侧壁上沿周向设有至少两个对壳体进行限位的凸筋，所述的凸筋与散热灯杯内壁相抵。凸筋的设置不仅可以对驱动电源壳体进行限位，方便其安装，还使得壳体与灯杯内壁间留有形成空气流道的空隙。
作为优选，在散热灯杯的外周上沿周向分布有多个纵向设置的外散热片。
为了方便安装，作为优选，在凸筋顶部设有螺孔，凸筋与散热灯杯通过螺钉相连。
作为优选，在泡壳顶部设有开孔，在开孔内卡设有环形圈，在环形圈内设有通风盖，通风孔设置在通风盖上。
 有益效果
采用了上述技术方案的本发明的设计思想及有益效果是：
本发明在灯体内部设置了空气流道，即在驱动电源壳体与灯杯内壁间留有形成空气流道的空隙，而灯座内设有上下贯通灯座的通风道，所述的空隙与通风道保持空气连通，而空隙下部和通风道上部又均与外界空气连通，使空气进入能带走驱动电源及LED光源产生的热量，不仅降低了电源工作的环境温度，保证了其使用寿命；还能有效降低灯杯外壳的温度，更加保护人的双手不被烫伤。
 附图说明
图 1 为本发明实施例中LED灯的立体图；
图2为本发明实施例中LED灯另一方向的立体图；
图3为本发明实施例中LED灯的结构分解示意图；
图4为图1的A-A剖视图；
图5为实施例中LED灯的散热效果示意图。
本发明的具体实施方式如下：
实施例：本实施例的 一种方便散热的 LED 灯 ，如图1～4所示， 包括灯头 1 、散热灯杯 2 、驱动电源壳体 3 和泡壳 4 ，所述的散热灯杯 2 内部为中空结构，散热灯杯 2 与驱动电源壳体 3 套接在一起，在驱动电源壳体 3 内安装有驱动电源 5 ，在驱动电源壳体 3 上部罩设有盖子 20 ，在散热灯杯 2 的外周上沿周向分布有多个纵向设置的外散热片 12 ；所述的驱动电源壳体 3 与散热灯杯 2 内壁之间留有通风的空隙 6 。
所述的空隙 6 是这样形成的，驱动电源壳体 3 的外径小于散热灯杯 2 的内径，在驱动电源壳体 3 侧壁上沿周向设有 3 个对壳体进行限位的凸筋 7 ，所述的凸筋 7 与散热灯杯 2 内壁相抵，凸筋 7 的设置使得驱动电源壳体与灯杯内壁间保持了固定的间距；同时为了方便安装固定，在凸筋 7 顶部设有螺孔，凸筋 7 与散热灯杯 2 通过螺钉相连，从而将驱动电源壳体 3 与散热灯杯 2 连接在一起。
为增大整灯的发光角度，在散热灯杯 2 上部设有高出灯杯上表面的灯座 8 ，灯座 8 侧壁上设有基板，基板上固定有 LED 光源，具体地说，所述的灯座 8 外轮廓形状为棱台形，在灯座 8 的每个侧面上固定有一块铝制的基板 9 ，在基板 9 上固定有一组 LED 光源 10 ，基板 9 与灯座 8 通过螺丝相连。由此整灯的发光角度为 300 度左右，可以达到能源之星的标准，比传统 LED 灯发光的 180 度相比具有更大覆盖面，几乎与白炽灯的角度一致。
灯座 8 也为中空结构，在灯座 8 内设有上下贯通整个灯座的通风道 11 ，在灯座 8 的通风道 11 内设有沿纵向布置的内散热片 13 。
在泡壳 4 顶部设有圆形的开孔 14 ，在开孔 14 内卡设有环形圈 15 ，在环形圈 15 内设有通风盖 16 ，在通风盖 16 上设置有多个通风孔 17 ，通风道 11 的上部通过通风孔 17 与外界空气保持连通。
在驱动电源壳体 3 下部的外周上固定设有与散热灯杯 2 底部相抵的承接环 18 ，在承接环 18 上沿周向设有多个使外界空气与所述的空隙 6 下部保持空气流通的孔洞 19 ，驱动电源壳体 3 由导热塑料制成，可有效散发热量。
所述空隙 6 上部与通风道 11 下部保持空气连通，因此构成整灯的内散热空气流道；如图 5 所示，在灯具工作时，驱动电源 5 产生的热量向空隙 6 内散发， LED 光源 10 产生的热量一部分通过灯座 8 的内散热片 13 向灯座的通风道内散发，另一部分热量通过灯座传导至散热灯杯的外散热片 12 进行散发；如图 5 中箭头方向所示，空气流从通风孔进入，流经通风道 11 、空隙 6 再从空隙 6 的底部排出，从而将通风道、空隙内的热量带走；而散热灯杯的外散热片 12 的热量则由空气自然对流散走，空气走向如图 5 中箭头方向所示。
整灯内外散热相结合， 不仅降低了电源工作的环境温度，保证了其使用寿命；还尽最大限度将LED光源产生的热量散走， 有效降低灯杯外壳的温度，更加保护人的双手不被烫伤。
此外，本发明的LED 灯还可以内置风扇，进一步提升散热效果。

Claims (1)

  1. 1、 一种方便散热的 LED 灯，包括灯头、散热灯杯、驱动电源壳体和泡壳，所述的散热灯杯内部为中空结构，散热灯杯与驱动电源壳体套接在一起，其特征是：所述的驱动电源壳体与散热灯杯内壁之间留有通风的空隙，在散热灯杯上部设有高出灯杯上表面的灯座，灯座侧壁上设有基板，基板上固定有 LED 光源，灯座内设有上下贯通整个灯座的通风道，在泡壳顶部设有通风孔，所述空隙与灯座的通风道空气连通，空隙下部与外界空气连通，通风道上部通过泡壳的通风孔与外界空气连通。
    2、 根据权利要求 1 所述的一种方便散热的 LED 灯，其特征是：所述的灯座外轮廓形状为多面体、圆柱体或圆台体中的任一种形状。
    3、 根据权利要求 2 所述的一种方便散热的 LED 灯，其特征是：所述的灯座外轮廓形状为棱台形，在灯座的每个侧面上固定有一块基板。
    4、 根据权利要求 1 所述的一种方便散热的 LED 灯，其特征是：在灯座的通风道内设有沿纵向布置的内散热片。
    5、 根据权利要求 1 所述的一种方便散热的 LED 灯，其特征是：在驱动电源壳体外周上固定设有与散热灯杯底部相抵的承接环，在承接环上沿周向设有多个使外界与所述的空隙下部保持空气流通的孔洞。
    6、 根据权利要求 1 所述的一种方便散热的 LED 灯，其特征是：在驱动电源壳体侧壁上沿周向设有至少两个对壳体进行限位的凸筋，所述的凸筋与散热灯杯内壁相抵。
    7、 根据权利要求 1 所述的一种方便散热的 LED 灯，其特征是：在散热灯杯的外周上沿周向分布有多个纵向设置的外散热片。
    8、 根据权利要求 6 所述的一种方便散热的 LED 灯，其特征是：在凸筋顶部设有螺孔，凸筋与散热灯杯通过螺钉相连。
    9、 根据权利要求 1 所述的一种方便散热的 LED 灯，其特征是：在泡壳顶部设有开孔，在开孔内卡设有环形圈，在环形圈内设有通风盖，通风孔设置在通风盖上。
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