WO2013131301A1 - 一种led灯 - Google Patents

一种led灯 Download PDF

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Publication number
WO2013131301A1
WO2013131301A1 PCT/CN2012/073536 CN2012073536W WO2013131301A1 WO 2013131301 A1 WO2013131301 A1 WO 2013131301A1 CN 2012073536 W CN2012073536 W CN 2012073536W WO 2013131301 A1 WO2013131301 A1 WO 2013131301A1
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WO
WIPO (PCT)
Prior art keywords
heat sink
light source
lamp
led
heat dissipation
Prior art date
Application number
PCT/CN2012/073536
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English (en)
French (fr)
Inventor
陈胜勇
洪燕南
Original Assignee
鹤山市广明源照明电器有限公司
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Application filed by 鹤山市广明源照明电器有限公司 filed Critical 鹤山市广明源照明电器有限公司
Publication of WO2013131301A1 publication Critical patent/WO2013131301A1/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
    • F21V29/70—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
    • F21V29/777—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 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
    • 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 lighting fixture, in particular an LED lamp.
  • LED is not only used in special lighting fields such as indicator lights and backlights, but also widely used in various general lighting fields as an alternative to incandescent lamps and energy-saving lamps.
  • LED lamps have the advantages of long life, high luminous efficiency, no radiation, impact resistance and low power consumption. They are energy-saving green lighting, so LED lights with LED as the light source are also emerging.
  • LED light sources such as LED bulbs and LED light-emitting chips have a large amount of heat, and heat dissipation has become a problem that must be solved for LED lamps.
  • the LED bulb used daily is small in size, and the LED light source is enclosed in the lamp cover, and is cooled by the heat sink disposed under the light source, and the heat dissipation effect is poor, and a bulb with a larger power cannot be produced.
  • the existing LED light bulb with unique structure is composed of a lampshade, a heat sink, an LED light source, a reflector, a power source and a lamp holder, and is characterized in that a plurality of light-emitting areas are arranged on the light bulb, and the light-emitting area is independent on the heat sink.
  • the heat dissipating body, the LED light source disposed on the heat dissipating body, and the reflector disposed on the surface of the heat dissipating body are formed.
  • the reflector is disposed on the surface of the heat sink, the assembly structure is complicated, and the heat is dissipated, which affects the lamp. Life and light efficiency.
  • an object of the present invention is to provide an LED lamp in which a heat sink and a reflector are integrated, which reduces accessories, simplifies structure, and is advantageous for heat dissipation.
  • An LED lamp comprises a lamp cover, a heat sink, an LED light source, a driver, a lamp holder and a lamp cap.
  • the heat sink is integrally formed.
  • the heat sink comprises a hollow heat sink, a solid heat sink extending upward from the hollow heat sink, and a solid heat sink.
  • An outwardly extending heat sink, the solid heat sink of the heat sink and/or the outer surface of the heat sink is provided with a light reflecting layer, and the LED light source is disposed on the heat sink or disposed on a solid heat sink between adjacent heat sinks
  • the lamp cover is fixed on the heat sink to cover the LED light source, the open end of the hollow heat sink is connected with the lamp holder and encloses a cavity, and the driver is placed in the cavity and electrically connected with the lamp cap, and the lamp cap is fixed at On the lamp holder.
  • the heat sink is provided with an arc-shaped boss at an upper end or a lower end or an upper end of the LED light source, the boss is located between adjacent heat sinks, and the outer surface of the boss is attached Reflective layer.
  • the arrangement of the bosses facilitates adjusting the angle of illumination within an appropriate range.
  • the reflective layer is a metal reflective layer made of aluminum or aluminum alloy sprayed or coated or plated on the surface, and the metal reflective layer brings a high reflectivity to the heat sink and the boss. At the same time, it will not affect the heat dissipation effect of the radiator
  • the heat sink is provided with a downwardly concave mounting surface that cooperates with the reflective layer of the heat sink and the boss to form a secondary light distribution surface, and the LED light source illuminates the reflective surface of the heat sink or the boss.
  • the layer which is reflected back through the reflective layer, forms a secondary light distribution design that makes the light shine better into the crystal lamp.
  • the solid heat sink is provided with a groove, the lower end of the groove communicates with the inside of the hollow heat sink, the LED light source is fixed on the aluminum substrate, the aluminum substrate is installed in the groove, and the lower end of the aluminum substrate is extended.
  • the inside of the hollow heat sink is connected, and the lead wire drawn from the driver is soldered to the LED light source at the lower end of the aluminum substrate.
  • the arrangement of the grooves makes the LED light source level with the mounting surface, making the overall quality of the LED lamp more beautiful.
  • the heat sink is directly etched with a circuit board, and the LED light source is fixed on the circuit board.
  • the circuit board is directly etched on the heat sink, which reduces the aluminum substrate and the thermal conductive silicone layer with lower thermal conductivity, which not only saves the material, but also improves the overall heat dissipation coefficient of the LED light source and optimizes the heat dissipation effect.
  • the LED light source is obliquely disposed on the heat sink, and the LED light source and the vertical surface are obliquely inclined downward at a certain oblique angle, so that the entire LED lamp can be irradiated to a wide angle of 80 to 180 degrees downward.
  • one or more lamp covers are fixed on the heat sink, and the lamp cover may be a large lamp cover that covers the upper half of the heat sink, and the lamp cover may also be several a smaller lamp cover mounted between the heat sinks; the lower end of the lamp cover may be fixed to the heat sink by means of bonding or screwing or snapping, and the top of the lampshade is provided with a matching buckle at the top of the heatsink
  • the structure, the top of the lampshade and the top end of the heat sink are fixed by the snap structure connection.
  • the lamp holder is provided with a heat dissipation hole, so that the inside and the outside of the cavity surrounded by the lamp holder and the heat sink form a convection, and the heat dissipation effect is further optimized.
  • the invention has the beneficial effects that the LED lamp of the invention has novel and unique structure, and the heat sink is integrally provided with a heat sink for both heat dissipation and reflection light source to improve the illumination effect, and the LED light source is directly mounted on the heat sink to enable heat dissipation.
  • the light source of the light source and the reflector of the light source the light bulb structure is simplified without affecting the light effect.
  • the light source is directly mounted on the heat sink, which is beneficial for heat dissipation, and the heat sink is integrally formed with hollow heat dissipation.
  • the body, the solid heat sink and the heat sink enhance the heat conduction efficiency, increase the area of the heat sink, and improve the heat dissipation efficiency.
  • the LED lamp of the invention optimizes the heat dissipation effect, simplifies the overall structure of the bulb and the production assembly process, reduces the weight of the bulb, reduces the production cost, and at the same time, the product is beautiful, practical, and suitable for mass production.
  • Figure 1 is a schematic exploded view of a first embodiment of the present invention
  • Figure 2 is a schematic view of the assembled structure of the first embodiment (with the lamp cover removed);
  • FIG. 3 is a schematic structural view of a heat sink of a first embodiment
  • Figure 4 is a plan view of the heat sink
  • Figure 5 is a schematic view showing the structure of the second embodiment of the present invention (with the lamp cover removed);
  • Figure 6 is a schematic structural view of a heat sink of a second embodiment
  • Figure 7 is a schematic structural view of a heat sink according to a third embodiment of the present invention.
  • Figure 8 is a schematic view showing the structure of the fourth embodiment of the present invention (with the lamp cover removed);
  • Figure 9 is a schematic view showing the structure of a lampshade of the present invention.
  • An LED lamp of the present invention comprises a lampshade 1, a heat sink 2, an LED light source 3, a driver 4, a lamp holder 5, and a lamp cap 6.
  • the lower end of the heat sink 2 is a hollow heat sink 21, and the hollow heat sink 21 extends upward with a solid heat sink.
  • the solid heat sink 22 extends outwardly with a plurality of fins 23, the hollow heat sink 21, the solid heat sink 22, and the heat sink 23 are integrally formed, and the outer surface of the solid heat sink 22 and/or the heat sink 23 is sprayed or coated or The light-reflecting layer is plated.
  • the light-reflecting layer is a metal reflective layer made of aluminum or aluminum alloy;
  • the LED light source 3 is disposed on the heat sink 23 or disposed on the solid heat sink 22 between the adjacent heat sinks 23,
  • the lamp cover 1 is fixed on the heat sink 2 to cover the LED light source 3.
  • the open end of the hollow heat sink 21 is connected with the lamp holder 5 and encloses a cavity.
  • the driver 4 is placed in the cavity and electrically connected to the lamp cap 6, and the lamp cap 6 is fixed. On the lamp holder 5.
  • the LED light source 3 is provided with four, uniformly distributed in four directions on the upper surface of the solid heat sink 22, and the solid heat sink 22 is integrally provided with four.
  • the fins 23, the fins 23 and the LED light source 3 are alternately arranged such that the fins 23 are disposed on both sides of each of the LED light sources 3; and the arc bumps are disposed on the heat sink 2 at the upper and lower ends of the LED light source 3 24,
  • the boss 24 may be integrally formed with the heat sink 2, or may be externally attached to the heat sink 2; a concave mounting surface is formed between the boss 24 and the heat sink 23, and the LED light source 3 is disposed on the mounting surface
  • the surface of the heat sink 23 and the boss 24 is provided with a light reflecting layer.
  • the heat sink 23 and the boss 24 constitute a reflecting surface for reflecting the light of the light source.
  • the LED light source 3 is irradiated to the reflecting layer of the heat sink 23 or the boss 24, and is reflected by the light. The layer is then reflected back, which creates a secondary light distribution design that makes the light shine better into the crystal lamp.
  • the solid heat sink 22 is provided with a recess 25 for mounting the LED light source 3, the recess 25 is located on a mounting surface surrounded by the heat sink 23 and the boss 24, and the LED light source 3 is fixed on the aluminum substrate 31, aluminum
  • the substrate 31 is mounted in the recess 25, and the lower end of the aluminum substrate 31 projects into the boss 24 below the recess 25, and enters the inside of the hollow heat sink 21 through the boss 24, and the lead drawn from the driver 4 is soldered to the aluminum substrate 31.
  • the lower end is connected to the LED light source 3.
  • the arrangement of the groove 25 makes the LED light source 3 flat with the mounting surface, and at the same time, the underlying boss 24 can be used to cover the soldering line of the light source assembly, so that the overall quality of the LED lamp is more beautiful.
  • the boss 24 can also be separately disposed at the upper end or the lower end of the LED light source 3.
  • a second embodiment of the present invention differs from the first embodiment in that the boss 24 is separately disposed at The upper end of the LED light source 3 reflects an upward portion of the light emitted from the light source to the lower side.
  • the LED light source 3 may be directly disposed on the heat sink 2 without using the aluminum substrate 31.
  • the circuit board 32 is directly etched on the heat sink 2,
  • the LED light source 3 is fixed to the wiring board 32.
  • the circuit board 32 is directly etched on the heat sink 2, which reduces the aluminum substrate 31 and the thermal conductive silica layer having a low thermal conductivity, thereby saving material, improving the overall heat dissipation coefficient of the LED light source 3, and optimizing the heat dissipation effect.
  • the LED light source 3 can also be mounted on the heat sink 23.
  • the LED lamp of the present design is usually mounted on the crystal lamp with the lamp cap down, the light emitted by the light source is mainly irradiated downward and to the surroundings.
  • the embodiment and the first The difference between the embodiments is that the solid heat sink 22 is provided with a light source mounting surface at an oblique angle to the vertical surface, and the LED light source 3 is disposed on the light source mounting surface of the solid heat sink 22 through the aluminum substrate, and the LED light source 3 is formed with the vertical surface.
  • the light emitted by the light source is mainly obliquely downwardly illuminated, and can be irradiated downward at a wide angle of 80 to 180 degrees, which is more suitable for application on a crystal lamp.
  • the lampshade 1 of the LED lamp in the above embodiment may be one or more.
  • the lampshade 1 can be disposed as a whole and cover the solid heat sink 22, the heat sink 23 and the LED light source 3 mounted on the heat sink 2; the lampshade 1 can also be composed of a plurality of small lampshades mounted on the heat sink 2 Each small lamp cover covers the LED light source 3 between the two fins 23.
  • the lower end of the lampshade 1 can be fixed on the heat sink 2 by means of bonding or screwing or snapping.
  • a card slot 27 for the card cover 1 is disposed under the lower boss 24, and the lower end of the lampshade 1 can be equipped with a card.
  • the block, the card block and the card slot 27 are fixedly coupled; the top of the lamp cover 1 is provided with a snap post 11 , and the top end of the heat sink 2 is provided with a slot 24 for the card corresponding to the latch post 11 of the lamp cover 1 , the lamp cover 1 and The heat sink 2 is fixedly connected to the slot 24 by the snap post 11; the top of the lamp cover 1 can also be fixed to the top end of the heat sink 2 by adhesive bonding.
  • the manner of connecting the lampshade 1 and the heat sink 2 is not limited to the above description, and may be implemented in other manners.
  • the socket 5 is provided with a heat dissipation hole 50, and the cavity formed by the socket 5 and the hollow heat sink 21 forms a convection with the outside through the heat dissipation hole 50, thereby further optimizing the heat dissipation effect.
  • the heat sink 2 of the LED lamp of the present invention is integrally formed to facilitate heat conduction, and the heat sink 2 is further provided with a hollow heat sink 21, a solid heat sink 22 and a heat sink 23 to enhance heat conduction efficiency, increase the area of the heat sink, and optimize heat dissipation. effect.
  • the surface of the heat sink 23 is sprayed or coated with a reflective layer made of a material having high reflectivity, which is used for both heat dissipation and reflection of the light source to improve the illumination effect, so that the heat sink 2 acts as both a heat sink and a light source.
  • the body reduces the structure of the reflector and simplifies the structure of the bulb without affecting the light effect, thereby reducing the weight of the lamp body.
  • the product structure of the invention is unique and novel, the overall art is good, the appearance is beautiful, and the heat dissipation performance is further optimized, and can be used for high-power LED lamps, and has strong practicability.
  • the LED lamp of the invention has fewer accessories, simplifies the production assembly process, reduces the production cost, and is suitable for mass production.

Abstract

一种LED灯，包括灯罩（1）、散热器（2）、LED光源（3）、驱动器（4）、灯座（5）和灯头（6）。散热器（2）一体成型，包括中空散热体（21）、从中空散热体（21）向上延伸的实心散热体（22）、从实心散热体（22）向外延伸的散热片（23）。散热器（2）的实心散热体（22）和/或散热片（23）外表面上附有反光层。LED光源（3）设置在散热片（23）上或设置在相邻散热片（23）之间的实心散热体（22）上。灯罩（1）固定在散热器（2）上并罩住LED光源（3）。中空散热体（21）的开口端与灯座（5）连接并围成一空腔，驱动器（4）置于空腔内并与灯头（6）电连接。灯头（6）固定在灯座（5）上。LED灯结构独特新颖，外形美观，散热功能强大，可用于大功率的LED灯。同时LED灯配件较少，简化了生产组装工艺，降低了生产成本，适于大批量的生产。

Description

一种LED灯
技术领域
本发明涉及一种照明器具，特别是一种LED灯。
背景技术
随着LED技术的不断发展，LED不仅应用于指示灯、背光源等特殊照明领域，并且作为白炽灯、节能灯的替代产品开始广泛地应用于各种普通照明领域。LED灯具有寿命长、光效高、无辐射、抗冲击以及低功耗等优点，属于节能的绿色环保照明，因此以LED为光源的LED灯也不断涌现。但是，无论是LED灯泡还是LED发光芯片等LED光源，其发热量都很大，散热成为LED灯具的一个必须解决的问题。日常使用的LED灯泡，体积较小，LED光源封装在灯罩内，靠设置在光源下方的散热器进行散热，散热效果较差，不能制作较大功率的灯泡。现有的一种具有独特结构的LED灯泡，由灯罩、散热器、LED光源、反光罩、电源、灯座组成，其特点是灯泡上设置有多个发光区域，发光区域由散热器上的独立散热体、设置在散热体上的LED光源和设置在散热体表面的反光罩组成，但是，上述结构中把反光罩设置在散热器表面上，组装结构复杂，且不利于热量的散发，影响灯具的寿命和光效。
发明内容
为了克服上述技术问题，本发明的目的在于提供一种散热器和反光罩一体化的LED灯，减少配件、简化结构，并且有利于散热。
本发明所采用的技术方案主要是：
一种LED灯，包括灯罩、散热器、LED光源、驱动器、灯座、灯头，所述散热器一体成型，散热器包括中空散热体、从中空散热体向上延伸的实心散热体、从实心散热体向外延伸的散热片，所述散热器的实心散热体和/或散热片外表面上附有反光层，所述LED光源设置在散热片上或设置在相邻散热片之间的实心散热体上，所述灯罩固定在散热器上罩住LED光源，所述中空散热体的开口端与灯座连接并围成一空腔，所述驱动器置于该空腔内并与灯头电连接，灯头固定在灯座上。
作为上述技术方案的进一步改进，所述散热器上在LED光源的上端或下端或上下端设置有弧形的凸台，所述凸台位于相邻的散热片之间，凸台外表面附有反光层。凸台的设置有利于调整发光角度在适当的范围内。
作为上述技术方案的进一步改进，所述反光层是在表面喷或涂或镀上去的铝或铝合金制成的金属反光层，金属反光层为散热片和凸台带来较高的反光率的同时不会影响散热器的散热效果。
作为上述技术方案的进一步改进，所述散热器上设置有向下凹的与散热片和凸台的反光层配合定向形成二次配光的安装面，LED光源照射到散热片或凸台的反光层，通过反光层再反射出去，这就形成一种二次配光设计，使光照射到水晶灯的效果更好。
优选的，所述实心散热体上设置有凹槽，所述凹槽下端连通中空散热体内部，所述LED光源固定在铝基板上，所述铝基板安装在凹槽内，铝基板的下端伸入到中空散热体内部，从驱动器引出的引线焊接在铝基板下端与LED光源连接。凹槽的设置使LED光源与安装面平整，使LED灯的整体更加美观。
另一优选方案，所述散热器上直接蚀刻有线路板，所述LED光源固定在线路板上。线路板直接蚀刻在散热器上，减少了铝基板和导热系数较低的导热硅胶层，既节省了材料，又提高了LED光源的整体散热系数，优化散热效果。
作为上述技术方案的进一步改进，LED光源倾斜设置在散热器上，LED光源与垂直面呈一定的倾斜角度斜向下照射，使整个LED灯能向下进行80~180°的广角度照射。
作为上述技术方案的进一步改进，所述散热器上固定有一个或一个以上的灯罩，该灯罩可以为一个将散热器的上半部全部罩住的较大的灯罩，该灯罩还可以是数个安装在散热片之间的较小的灯罩；所述灯罩下端可采用粘合或者螺旋连接或者卡接的方式固定在散热器上，所述灯罩顶部与散热器的顶端设置有相匹配的卡扣结构，灯罩顶部和散热器的顶端通过该卡扣结构连接固定。
作为上述技术方案的进一步改进，所述灯座上设置有散热孔，使灯座与散热器围成的空腔内部与外部形成对流，进一步优化散热效果。
本发明的有益效果是：本发明的LED灯结构新颖独特，散热器上一体设置有既用于散热又用于反射光源光线改善照明效果的散热片，LED光源直接安装在散热器上，使散热器既作为光源的散热体又作为光源的反光体，在不影响光效的前提下精简了灯泡的结构，光源直接安装在散热器上，有利于进行散热，散热器上一体成型设置有中空散热体、实心的散热体、散热片，增强热传导效率，增加散热体的面积，提高散热效率。本发明的LED灯优化了散热的效果，简化了灯泡的整体结构与生产组装工艺，减轻了灯泡的重量，降低了生产成本，同时该产品美观，实用性强，也适于大批量的生产。
附图说明
下面结合附图和具体实施方式对本发明作进一步详细的说明。
图1是本发明第一实施例的爆炸示意图；
图2是第一实施例组装后的结构示意图（去掉灯罩）；
图3是第一实施例的散热器的结构示意图；
图4是散热器的俯视图；
图5是本发明第二实施例的结构示意图（去掉灯罩）；
图6是第二实施例的散热器的结构示意图；
图7是本发明第三实施例的散热器结构示意图；
图8是本发明第四实施例的结构示意图（去掉灯罩）；
图9是本发明的灯罩的结构示意图。
图中1、灯罩， 2、散热器， 3、LED光源， 4、驱动器，5、灯座， 6、灯头， 11、卡扣柱， 21、中空散热体，22、实心散热体，23、散热片， 24、凸台， 25、凹槽， 26、槽孔， 27、卡位槽， 31、铝基板， 32线路板。
具体实施方式
本发明的一种LED灯，包括灯罩1、散热器2、LED光源3、驱动器4、灯座5、灯头6，散热器2下端为中空散热体21，中空散热体21向上延伸有实心散热体22，实心散热体22向外延伸有多片散热片23，所述中空散热体21、实心散热体22、散热片23一体成型，实心散热体22和/或散热片23外表面喷或涂或镀有反光层，优选的，所述反光层为铝或铝合金制成的金属反光层；LED光源3设置在散热片23上或设置在相邻散热片23之间的实心散热体22上，灯罩1固定在散热器2上罩住LED光源3，中空散热体21的开口端与灯座5连接并围成一空腔，驱动器4置于该空腔内并与灯头6电连接，灯头6固定在灯座5上。
参照图1至图4，本发明的第一实施例，其中所述的LED光源3设置有四个，均匀分布在实心散热体22上表面的四个方向，实心散热体22上一体设置有四片散热片23，散热片23与LED光源3交替设置，使每一个LED光源3的两侧都设置有散热片23；散热器2上在LED光源3的上下端都设置有弧形的凸台24，凸台24可以与散热器2一体成型，也可以为外置卡接在散热器2上；凸台24与散热片23之间形成下凹的安装面，LED光源3设置在该安装面上，散热片23和凸台24表面设置有反光层，散热片23和凸台24组成用于反射光源光线的反光面，LED光源3照射到散热片23或凸台24的反光层，通过反光层再反射出去，这就形成一种二次配光设计，使光照射到水晶灯的效果更好。同时，实心散热体22上设置有用于安装LED光源3的凹槽25，凹槽25位于散热片23和凸台24围成的安装面上，所述LED光源3固定在铝基板31上，铝基板31安装在凹槽25内，铝基板31的下端伸入到凹槽25下方的凸台24内，并通过凸台24进入中空散热体21内部，从驱动器4引出的引线焊接在铝基板31下端与LED光源3连接。凹槽25的设置使LED光源3与安装面平整，同时可利用下方的凸台24遮住光源组件焊锡的线路，使LED灯的整体更加美观。
凸台24还可以单独设置在LED光源3的上端或下端，参照图5、图6，本发明的第二实施例，该实施例与第一实施例的区别在于，其凸台24单独设置在LED光源3的上端，对光源发出的向上的部分光线反射到下方。
参照图7，作为本发明的第三实施例，所述LED光源3还可以不采用铝基板31而直接设置在散热器2上。散热器2上直接蚀刻有线路板32， LED光源3固定在线路板32上。线路板32直接蚀刻在散热器2上，减少了铝基板31和导热系数较低的导热硅胶层，既节省了材料，又提高了LED光源3的整体散热系数，优化散热效果。此外，LED光源3还可以安装在散热片23上。
由于本设计的LED灯通常是灯头向下的安装在水晶灯上，光源发出的光主要向下和向四周进行照射，参照图8，作为本设计的第四实施例，该实施例与第一实施例的区别在于，实心散热体22上设置有与垂直面成倾斜角度的光源安装面，LED光源3通过铝基板设置在实心散热体22的光源安装面上，LED光源3与垂直面成1到60度的倾斜角度，优选采用15到30度的角度，光源发出的光主要是斜向下照射，能向下进行80~180°的广角度照射，更加适合应用在水晶灯上。
进一步，参照图9，上述实施例中的LED灯的灯罩1可为一个或多个。灯罩1可设置为一个并将实心散热体22、散热器23以及安装在散热器2上的LED光源3全部罩住；灯罩1还可以由多个安装在散热器2上的小灯罩组合而成，每个小灯罩罩住两片散热片23之间的LED光源3。灯罩1下端可采用粘合或者螺旋连接或者卡接的方式固定在散热器2上，如在下凸台24的下方设置有用于卡扣灯罩1的卡位槽27，灯罩1下端可配合设置有卡块，卡块和卡位槽27配合连接固定；灯罩1的顶部设置有卡扣柱11，散热器2的顶端对应灯罩1的卡扣柱11设置有用于卡置的槽孔24，灯罩1和散热器2通过卡扣柱11卡置在槽孔24内连接固定；灯罩1的顶部还可以采用粘合的方式固定在散热器2顶端。灯罩1与散热器2的连接方式不限定于上述的描述，还可以采用其他的方式实现。
进一步，所述灯座5上设置有散热孔50，灯座5与中空散热体21围成的空腔通过散热孔50与外界形成对流，进一步优化散热效果。
本发明的LED灯的散热器2为一体成型，有利于热传导，散热器2上还设置有中空散热体21、实心散热体22和散热片23，增强热传导效率，增加散热体的面积，优化散热效果。散热片23表面喷或涂或镀有由高反光率材料制成的反光层，既用于散热又用于反射光源光线改善照明效果，使散热器2既作为光源的散热体又作为光源的反光体，减少了反光罩的结构，在不影响光效的前提下精简了灯泡的结构，减轻了灯体的重量。
本发明的产品结构独特新颖，整体艺术性好，外形美观，而且散热性能得到进一步优化，可用于大功率的LED灯，实用性强。本发明的LED灯的配件较少，简化了生产组装工艺，降低了生产成本，适于大批量的生产。
以上所述仅为本发明的优先实施方式，只要以基本相同手段实现本发明目的的技术方案都属于本发明的保护范围之内。

Claims (9)

  1. 一种LED灯，包括灯罩（1）、散热器（2）、LED光源（3）、驱动器（4）、灯座（5）、灯头（6），其特征在于：所述散热器（2）一体成型，散热器（2）包括中空散热体（21）、从中空散热体（21）向上延伸的实心散热体（22）、从实心散热体（22）向外延伸的散热片（23），所述散热器（2）的实心散热体（22）和/或散热片（23）外表面上附有反光层，所述LED光源（3）设置在散热片（23）上或设置在相邻散热片（23）之间的实心散热体（22）上，所述灯罩（1）固定在散热器（2）上罩住LED光源（3），所述中空散热体（21）的开口端与灯座（5）连接并围成一空腔，所述驱动器（4）置于该空腔内并与灯头（6）电连接，灯头（6）固定在灯座（5）上。
  2. 根据权利要求1所述的一种LED灯，其特征在于：所述散热器（2）上在LED光源（3）的上端或下端或上下端设置有弧形的凸台（24），所述凸台（24）位于相邻的散热片（23）之间，凸台（24）外表面附有反光层。
  3. 根据权利要求1或2所述的一种LED灯，其特征在于：所述反光层为喷或涂或镀上去的金属反光层。
  4. 根据权利要求2所述的一种LED灯，其特征在于：所述散热器（2）上设置有向下凹的与散热片（23）和凸台（24）的反光层配合定向形成二次配光的安装面。
  5. 根据权利要求1所述的一种LED灯，其特征在于：所述实心散热体（22）上设置有凹槽（25），所述凹槽（25）下端连通中空散热体（21）内部，所述LED光源（3）固定在铝基板（31）上，所述铝基板（31）安装在凹槽（25）内，铝基板（31）的下端伸入到中空散热体（21）内部。
  6. 根据权利要求1所述的一种LED灯，其特征在于：所述散热器（2）上蚀刻有线路板(32)，所述LED光源（3）固定在线路板（32）上。
  7. 根据权利要求1所述的一种LED灯，其特征在于：所述LED光源（3）倾斜设置在散热器（2）上。
  8. 根据权利要求1所述的一种LED灯，其特征在于：所述散热器（2）上固定有一个或一个以上的灯罩（1），所述灯罩（1）顶部与散热器（2）的顶端连接固定。
  9. 根据权利要求1所述的一种LED灯，其特征在于：所述灯座（5）上设置有散热孔（50）。
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