WO2011160304A1 - Led照明灯泡及其散热座 - Google Patents

Led照明灯泡及其散热座 Download PDF

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Publication number
WO2011160304A1
WO2011160304A1 PCT/CN2010/074463 CN2010074463W WO2011160304A1 WO 2011160304 A1 WO2011160304 A1 WO 2011160304A1 CN 2010074463 W CN2010074463 W CN 2010074463W WO 2011160304 A1 WO2011160304 A1 WO 2011160304A1
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Prior art keywords
heat
heat dissipating
plastic sleeve
dissipating fin
heat dissipation
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PCT/CN2010/074463
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English (en)
French (fr)
Inventor
袁晖军
刘孝玮
汤维民
林华传
洪澄
Original Assignee
深圳市旭翔光电科技有限公司
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Application filed by 深圳市旭翔光电科技有限公司 filed Critical 深圳市旭翔光电科技有限公司
Priority to PCT/CN2010/074463 priority Critical patent/WO2011160304A1/zh
Publication of WO2011160304A1 publication Critical patent/WO2011160304A1/zh

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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
    • F21V29/74—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
    • 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
    • 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 the field of lighting bulbs, in particular to an LED lighting bulb with low cost and good heat dissipation performance and a heat dissipating seat thereof.
  • the traditional light bulb is an incandescent light bulb, which has low illumination, is not bright, and does not save energy. Fluorescent light bulbs appear after incandescent light bulbs, which are energy efficient and brighter, but are not environmentally friendly due to the large use of phosphors. At present, there are more energy-saving and environmentally-friendly LED light sources, and LED bulbs are produced.
  • the existing LED bulbs are generally complicated in structure, and the main components include a lamp cap, an insulator, a circuit board, a heat sink, a lamp body and a lamp cover.
  • the lamp body covers the lower end of the insulator, and the upper end of the insulator is fixed to the lower end of the heat sink.
  • the circuit board is mounted in the insulator.
  • the lamp body is fixed on the upper end of the heat sink, and the lamp cover covers the lamp body.
  • the heat sink of the above LED bulb is usually manufactured by aluminum die casting, aluminum extrusion molding and fin type.
  • the aluminum die-casting heat sink has a simple and convenient processing process, but the die-casting heat sink uses more aluminum materials, so that the weight of the heat sink is relatively heavy, and the cost is naturally high. Due to the limitation of the process technology, the heat sink of the aluminum extrusion type is made thicker and uses more aluminum materials, which is still not conducive to reducing the manufacturing cost. The finned fin heat sink has a reduced aluminum material, but its processing process is cumbersome and requires a lot of time and labor, which is still not conducive to reducing manufacturing costs.
  • the above three manufacturing methods have a common disadvantage: they are not inherently insulative, and the circuit boards cannot be directly mounted inside them. It is necessary to additionally add an insulator to isolate the circuit board from the heat sink, thereby making the assembly more complicated and manufacturing. The cost has also increased relatively.
  • the main object of the present invention is to provide an LED lighting bulb and a heat sink which are characterized by good insulation, light weight, low manufacturing cost and good heat dissipation performance.
  • Another object of the present invention is to provide an LED lighting bulb and a heat sink that are characterized by ease of processing and assembly.
  • An LED lighting bulb comprising a lamp cap, a heat sink, an LED lamp panel and a lamp cover, wherein the heat sink is mounted on an upper end of the lamp cap, the LED lamp disc is mounted on an upper end surface of the heat sink, and the lamp cover covers the LED lamp panel,
  • the heat sink includes a plastic sleeve and a heat dissipating fin, and the heat dissipating fin is fixedly arranged on the periphery of the plastic sleeve in a radial array; and the upper end of the heat dissipating fin is bent to form a lap.
  • the sheet is exposed on the upper end surface of the plastic sleeve, and the lamp disc is abutted on the lap.
  • the lap is used to increase the heat receiving area of the heat dissipating fin, so that the heat of the lamp disc is quickly transmitted to the heat dissipating fin for heat dissipation.
  • the heat dissipating fin and the plastic sleeve are inlaid and injection molded.
  • the LED lamp panel comprises an LED lamp body, a heat dissipating substrate and a heat conducting plate.
  • the LED lamp body is fixed on the upper surface of the substrate, and the substrate abuts the upper surface of the heat conducting plate, and the bottom surface of the heat conducting plate Contact with the aforementioned lap.
  • the tab is bent at 90° to the heat dissipating fin body.
  • the main body of the heat dissipating fin is provided with a heat dissipation through hole for forming heat dissipation effect of the convection enhancing heat dissipating fin.
  • a heat sink seat includes a plastic sleeve and a heat dissipating fin, wherein the heat dissipating fins are radially arranged on the periphery of the plastic sleeve, and the upper end of the heat dissipating fin is bent. There is a lap which is exposed on the upper end surface of the plastic sleeve, and the lap is used to increase the heat receiving area of the heat dissipation fin.
  • the heat dissipating fin and the plastic sleeve are inlaid and injection molded.
  • the heat dissipating fins are aluminum materials with better heat dissipation performance.
  • the tab is bent at 90° to the heat dissipating fin body.
  • the main body of the heat dissipating fin is provided with a heat dissipation through hole for forming heat dissipation effect of the convection enhancing heat dissipating fin.
  • the present invention has obvious advantages and advantageous effects compared with the prior art. Specifically, it can be known from the above technical solutions:
  • the heat sink body is formed by fixing the heat dissipating fin on the plastic sleeve, which can effectively reduce the use of the heat dissipating material, is lighter in weight, and can greatly reduce the manufacturing cost of the heat sink. Moreover, the insulating performance of the plastic sleeve makes the heat sink have good insulation, and the circuit board can be installed in the heat sink without additional insulation, and the manufacturing cost can be further reduced.
  • the slats of the heat dissipating fins make the contact area of the heat dissipating fins and the heat conducting plate larger, so that the heat receiving area of the heat dissipating fins can be increased, so that the heat can be quickly transferred to the heat dissipating fins, and the heat dissipating performance is better.
  • the use of heat-dissipating fins and plastic sleeve inlay injection molding connection making the processing of the heat sink more convenient and assembly of LED lighting bulbs more convenient, can further reduce the manufacturing cost of the heat sink and LED lighting bulbs.
  • the use of the heat dissipation holes provided on the heat dissipating fins can form a convection of heat, so that the heat is dissipated faster, and the heat dissipation performance of the heat sink can be further improved.
  • Figure 1 is an assembled perspective view of an embodiment of the present invention
  • Figure 2 is an exploded view of an embodiment of the present invention
  • Figure 3 is a partial assembled view of an embodiment of the present invention.
  • Figure 4 is an enlarged view of a heat dissipating fin in an embodiment of the present invention.
  • Figure 5 is a longitudinal cross-sectional view of an embodiment of the present invention.
  • Figure 6 is a transverse cross-sectional view of an embodiment of the present invention.
  • FIGS. 1 through 6 there is shown a specific structure of a preferred embodiment of the present invention, including a heat sink 10, a lamp cap 20, an LED lamp panel 30, and a lamp cover 40.
  • the heat sink 10 includes a plastic sleeve 11 and heat dissipating fins 12 .
  • the plastic sleeve 11 has a cavity that penetrates vertically.
  • the heat dissipating fin 12 is an aluminum material with better heat dissipation performance, and the heat dissipating fin 12 and the plastic sleeve 11 are in-mold injection molding, and the heat dissipating fin 12 and the plastic sleeve 11 are fixedly mounted on the injection molding portion.
  • the hole 121, the fixing hole 121 makes the connection of the heat dissipating fin 12 and the plastic sleeve 11 more rigid after insert molding.
  • the heat dissipating fins 12 are radially distributed on the periphery of the plastic sleeve 11 , and the heat dissipating fins 12 are perpendicular to the outer wall surface of the plastic sleeve 11 , and a direction is formed between the adjacent heat dissipating fins 12 .
  • the gap 101 whose outer width is gradually enlarged.
  • the upper end of the heat dissipating fin 12 is bent to form a tab 122.
  • the tab 122 is bent at 90° with the main body 123 of the heat dissipating fin 12, and the tab 122 is exposed on the upper end surface of the plastic sleeve 11. As shown in FIG.
  • the slats 122 of the plurality of heat dissipating fins 12 are arranged in a radial array on the same plane around the circumference of the plastic sleeve 11, and the main body 123 of the plurality of slats 122 and the heat dissipating fins 123
  • the enclosure is formed with a circular receiving groove 102 with an opening facing upward.
  • the main body 123 of the heat dissipating fins 12 is further provided with a heat dissipating hole 124, which can convect heat.
  • the base 20 includes an insulator 21 and a metal outer casing 22.
  • the insulator 21 is located under the plastic sleeve 11, and the insulator 21 can be integrally connected with the plastic sleeve 11. Alternatively, the insulator 21 of the embodiment can be separately connected to the plastic sleeve 11. As shown in FIG. 2, the upper end surface of the insulator 21 extends upwardly with a hook portion 211, and the upper end surface of the insulator 21 is provided with three hook portions 211, and the lower end of the plastic sleeve 11 corresponding to the heat sink 10 is provided with three button holes.
  • the hook portion 211 of the insulator 21 extends into the plastic sleeve 11 and is fastened to the fastening hole 112 of the plastic sleeve 11.
  • the metal casing 22 covers the lower end of the insulator 21 for electrical connection with an external power source.
  • the LED lamp panel 30 includes a heat dissipation substrate 31, an LED lamp body 32, and a heat conduction plate 33.
  • the plurality of LED lamp bodies 32 are the main light-emitting elements of the present invention, and the LED lamp body 32 is a low-power LED lamp body.
  • the low-power LED lamp body 32 has the characteristics of high luminous efficiency, and the plurality of LED lamp bodies 32 is symmetrically distributed on the upper surface of the heat dissipation substrate 31 in three directions.
  • the heat dissipation substrate 31 has a circular shape, and the heat dissipation substrate 31 is also made of an aluminum material.
  • the heat dissipation substrate 31 is provided with three through holes 311.
  • the heat conducting plate 33 is embedded in the accommodating groove 102, and the heat conducting plate 33 is also an aluminum material with good heat dissipation performance.
  • the bottom surface of the heat conducting plate 33 abuts against the upper surface of the slat 122, and the slab 122 is enlarged.
  • the heat receiving area of the heat dissipating fins 12 allows the heat of the heat conducting plate 33 to be quickly transferred to the heat dissipating fins 12 for heat dissipation, and the heat dissipating effect is good.
  • the heat conducting plate 33 is provided with three through holes 331, and three screw holes 111 are provided corresponding to the upper end surface of the plastic sleeve 11.
  • the heat dissipating substrate 31 is fixed to the upper surface of the heat conducting plate 33, and the screw is sequentially threaded through the through hole 311, and the through hole 331 is screwed to the screw hole 111 to fix the heat dissipating substrate 31 and the heat conducting plate 33 to the plastic sleeve 11. End face.
  • the external power supply line is electrically connected to the LED lamp panel 30 through the heat sink 10 (not shown). This principle is a prior art technology, and the principle will not be described in detail herein.
  • the lamp cover 40 is a transparent hemispherical casing.
  • the lamp cover 40 is matched with the upper end surface of the heat sink 10.
  • the lamp cover 40 is provided with a hook portion 41.
  • the heat conducting plate 33 is provided with a hook groove 332. 41 and the hook groove 332 are snap-fitted and fixed to each other, thereby covering the LED lamp panel 30, and the LED lamp panel 30 is well protected.
  • the LED lamp body 32 generates light, and the light is emitted through the lamp cover 40 and is emitted. diffusion.
  • the assembly of the present invention is very simple. As shown in FIG. 2, first, the heat dissipating fins 12 and the plastic sleeve 11 are injection-molded, and the fins 122 of the heat dissipating fins 12 are exposed on the upper end surface of the plastic sleeve 11, and the heat conducting plate 33 is exposed. A heat sink 10 is assembled to the heat sink fin 12 on the tab 122 (see FIG. 3). Next, the LED lamp panel 30 is placed on the upper surface of the heat sink 10, and then the LED lamp panel 30 is fixed to the heat sink 10 by screws, and then the hook portion 41 of the lamp cover 40 and the hook groove 332 of the heat conducting plate 33 are mutually stuck.
  • the LED lock plate 30 is covered by the buckle hook, and the lamp cover 40 is pressed downwards during installation to facilitate the fastening.
  • the upper end of the cap 20 is inserted into the lower end of the plastic sleeve 11, and the hook portion 211 of the cap 20 is snap-fitted to the button hole 112 of the plastic sleeve 11, and the cap 20 is fixed to the lower end of the heat sink 10.
  • the assembled LED lighting bulb is shown in Figure 1.
  • the method of use of the present invention is also very simple.
  • the lamp head 20 can be mounted on an external plug and then powered on.
  • the power source and the LED lamp panel 30 are turned on, and the LED lamp body 32 emits light, and the light is radiated through the lamp cover 40.
  • the heat generated by the LED lamp body 32 is sequentially transmitted to the main body 123 of the heat dissipating fin 12 through the heat dissipating substrate 31, the heat conducting plate 33 and the tab 122 for heat dissipation, and the heat forms a good convection effect through the heat dissipating hole 124 and the gap 101. It can be quickly dispersed to extend the life of the LED lamp body 32.
  • the design focus of the present invention is:
  • the heat sink body is formed by fixing the heat dissipating fins on the plastic sleeve, which can effectively reduce the use of the heat dissipating material, is light in weight, and can greatly reduce the manufacturing cost of the heat sink.
  • the insulating performance of the plastic sleeve makes the heat sink have good insulation, and the circuit board can be installed in the heat sink without additional insulation, and the manufacturing cost can be further reduced.
  • the slats of the heat dissipating fins make the contact area of the heat dissipating fins and the heat conducting plate larger, so that the heat receiving area of the heat dissipating fins can be increased, so that the heat can be quickly transferred to the heat dissipating fins, and the heat dissipating performance is good.
  • the heat-dissipating fins and the plastic sleeve are injected and injection-molded, so that the processing of the heat sink is convenient and the assembly of the LED light bulb is simple, and the manufacturing cost of the heat sink and the LED lighting bulb can be further reduced.
  • the heat can be convected, the heat is dissipated faster, and the heat dissipation performance of the heat sink can be further improved.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

LED照明灯泡及其散热座 技术领域
本发明涉及照明灯泡领域技术，尤其是指成本低且具有较好散热性能的一种LED照明灯泡及其散热座。
背景技术
传统的灯泡为白炽灯灯泡，其照度较低，光线不明亮，不节能。在白炽灯灯泡后出现了荧光灯灯泡，其虽然节能，光线也较明亮，但是由于大量使用荧光粉，因此不够环保。目前出现了更为节能和环保的LED光源，随之产生了LED灯泡，现有的LED灯泡普遍结构复杂，主要包括的元件有灯头、绝缘体、电路板、散热座、灯体和灯罩，该灯头都是标准件，灯头包覆住绝缘体的下端部，绝缘体的上端与散热座的下端固接，该电路板安装于绝缘体内，该灯体固装于散热座的上端，该灯罩外罩住灯体。目前，上述LED灯泡之散热座的制造方式通常有铝压铸成型、铝挤成型和插翅片型。
上述现有的LED灯泡结构，其散热座虽可提供给使用者将LED灯泡之热量散去的功效，确实具有进步性，但是在实际使用时却发现其自身结构和使用性能上仍存在有诸多不足，造成现有的LED灯泡在实际应用上，未能达到最佳的使用效果和工作效能，现将其缺点归纳如下：
该种铝压铸型的散热座，其加工制程虽然简单方便，但压铸成型的散热座使用的铝材料较多，使得散热座的重量比较重，成本自然也很高。该种铝挤型的散热座，由于受工艺技术的限制，该散热座的散热片做得比较厚，使用的铝材料较多，仍然不利于降低制造成本。该种插翅片的散热座，其虽然使用的铝材料减少，但它的加工制程较为繁琐，需要投入较多的时间和人力，仍然不利于降低制造成本。
而且上述三种制造方式具有共同一个缺点：它们本身不具有绝缘性，电路板不能直接安装于它们内部，需要另外增加绝缘体将电路板与散热座隔离开，进而使得组装变得更繁琐，同时制造成本也相对地增加。
发明内容
本发明的主要目的是提供一种LED照明灯泡和散热座，其具有绝缘性好、重量轻、制造成本低和散热性能佳之特点。
本发明的另一目的是提供一种LED照明灯泡和散热座，其具有加工和组装方便之特点。
为实现上述目的，本发明采用如下之技术方案：
一种LED照明灯泡，包括有灯头、散热座、LED灯盘和灯罩，该散热座安装于灯头的上端，该LED灯盘安装于散热座的上端面，该灯罩外罩住LED灯盘，所述散热座包括有塑胶套筒和散热翅片，该散热翅片朝外呈辐射状阵列式固装于塑胶套筒的周缘上；以及，该散热翅片的上端折弯形成有一搭片，该搭片外露于塑胶套筒的上端面，该灯盘抵于搭片上，该搭片用于增大散热翅片的受热面积，使灯盘之热量快速传递到散热翅片上进行散热。
作为一种优选方案，所述散热翅片与塑胶套筒为镶嵌注射成型连接。
作为一种优选方案，所述LED灯盘包括有LED灯体、散热基板和导热板，该LED灯体固装于基板的上表面，该基板抵于导热板的上表面，该导热板的底面与前述搭片接触。
作为一种优选方案，所述搭片与散热翅片主体呈90°折弯。
作为一种优选方案，所述散热翅片的主体上设置有散热通孔，该散热通孔用于使热量形成对流增强散热翅片的散热效果。
一种散热座，所述散热座包括有塑胶套筒和散热翅片，散热翅片朝外呈辐射状阵列式固装于塑胶套筒的周缘上，以及，该散热翅片的上端折弯形成有搭片，该搭片外露于塑胶套筒的上端面，该搭片用于增大散热翅片的受热面积。
作为一种优选方案，所述散热翅片与塑胶套筒为镶嵌注射成型连接。
作为一种优选方案，所述散热翅片为散热性能较好的铝质材料。
作为一种优选方案，所述搭片与散热翅片主体呈90°折弯。
作为一种优选方案，所述散热翅片的主体上设置有散热通孔，该散热通孔用于使热量形成对流增强散热翅片的散热效果。
本发明与现有技术相比具有明显的优点和有益效果，具体而言，由上述技术方案可知：
一、通过将散热翅片固装于塑胶套筒上而形成该散热座体，能有效减少散热材料的使用，重量更轻，并可大大降低散热座的制造成本。而且利用塑胶套筒具有的绝缘性能，使得散热座具备了很好的绝缘性，不需要另外增加绝缘体即可将电路板安装散热座内，还可进一步降低制造成本。以及，利用散热翅片之搭片使得散热翅片与导热板的接触面积更大，从而可增大散热翅片的受热面积，使得热量能快速传递到散热翅片上，散热性能更好。
二、利用散热翅片与塑胶套筒镶嵌注射成型连接，使得该散热座的加工更加方便和LED照明灯泡的组装更为方便，可进一步降低散热座以及LED照明灯泡的制造成本。
三、利用散热翅片上设置的散热孔可使热量形成对流，使热量散去的速度更快，进一步可提高散热座的散热性能。
为更清楚地阐述本发明的结构特征和功效，下面结合附图与具体实施例来对本发明进行详细说明：
附图说明
图1是本发明之实施例的组装立体示图；
图2是本发明之实施例的分解图；
图3是本发明之实施例的局部组装图；
图4是本发明之实施例中的散热翅片的放大示图；
图5是本发明之实施例的纵向截面图；
图6是本发明之实施例的横向截面图。
附图标识说明：
10、散热座11、塑胶套筒
111、螺孔112、扣孔
12、散热翅片121、固定孔
122、搭片123、主体
124、散热孔101、间隙
102、容置槽20、灯头
21、绝缘体211、勾部
22、金属外壳30、LED灯盘
31、散热基板311、通孔
32、LED灯体33、导热板
331、通孔332、勾槽
40、灯罩41、勾部
具体实施方式：
请参照图1至图6所示，其显示出了本发明之较佳实施例的具体结构，包括有散热座10、灯头20、LED灯盘30、灯罩40。
其中，该散热座10包括有塑胶套筒11和散热翅片12。该塑胶套筒11具有一上下贯通的空腔。该散热翅片12为散热性能较好的铝质材料，散热翅片12与塑胶套筒11为镶嵌注塑成型连接，该散热翅片12与塑胶套筒11镶嵌注塑成型连接的部位上设置有固定孔121，该固定孔121使得镶嵌注塑成型后该散热翅片12与塑胶套筒11的连接更加牢固。该散热翅片12于塑胶套筒11的周缘上朝外呈辐射状阵列式分布，该散热翅片12垂直于塑胶套筒11的外壁面连接，相邻两散热翅片12之间形成有一向外宽度逐渐扩大的间隙101。以及，该散热翅片12的上端经折弯形成有一搭片122，该搭片122与散热翅片12之主体123呈90°折弯，且该搭片122外露于塑胶套筒11的上端面，如图2所示，该多个散热翅片12之搭片122绕塑胶套筒11的周缘于同一平面上呈辐射状阵列式排布，该多个搭片122和散热翅片之主体123围合形成有一开口朝上的圆形容置槽102。为增强散热翅片12的散热效果，于散热翅片12之主体123上进一步设置有散热孔124，该散热孔124可使热量形成对流。
该灯头20包括有绝缘体21和金属外壳22。该绝缘体21位于前述塑胶套筒11的下方，该绝缘体21可以与塑胶套筒11一体成型连接，亦可如本实施例的绝缘体21与塑胶套筒11分开连接。如图2所示，该绝缘体21的上端面向上延伸出有勾部211，绝缘体21的上端面共设有三个勾部211，对应于散热座10之塑胶套筒11的下端设置有三个扣孔112，该绝缘体21之勾部211伸入塑胶套筒11内并与塑胶套筒11之扣孔112相互扣合固装。该金属外壳22包覆住前述绝缘体21的下端，用于与外部电源实现电连接。
该LED灯盘30包括有一散热基板31、LED灯体32和导热板33。该复数个LED灯体32为本发明的主要发光元件，该LED灯体32为小功率的LED灯体，该种小功率的LED灯体32具有发光效率高的特点，该复数个LED灯体32于散热基板31上表面呈三对称均匀分布。该散热基板31呈圆形，且散热基板31同样为铝质材料，该散热基板31上设置有三个通孔311。该导热板33嵌装于前述容置槽102中，导热板33亦为散热性能良好的铝质材料，该导热板33的底面抵于前述搭片122的上表面上，该搭片122增大了散热翅片12的受热面积，使得导热板33之热量可快速地传递到散热翅片12上进行散热，散热效果佳。该导热板33上设置有三个通孔331，对应于塑胶套筒11的上端面设置有三个螺孔111。该散热基板31抵于导热板33的上表面，螺钉依次穿过通孔311、通孔331与螺孔111螺合连接而将散热基板31和导热板33一并固定于塑胶套筒11的上端面。外部电源线穿过前述散热座10而与LED灯盘30实现电连接（图中未示），该原理为现有成熟技术，在此对该原理不作详细叙述。
该灯罩40为透明的半球形壳体，灯罩40与前述散热座10的上端面相适配，于灯罩40上设置有勾部41，对应于前述导热板33上设置有勾槽332，该勾部41与勾槽332相互卡扣衔接固定，进而外罩住前述LED灯盘30，对LED灯盘30起到很好的保护作用，由LED灯体32产生灯光，灯光透过该灯罩40而射出并扩散。
详述本实施例的组装过程及使用方法如下：
本发明的组装很简单，如图2，首先，将散热翅片12与塑胶套筒11镶嵌注塑成型，且散热翅片12之搭片122外露于塑胶套筒11的上端面，该导热板33抵于散热翅片12之搭片122上而组装形成一散热座10（如图3）。接着，将LED灯盘30放置于散热座10的上表面，然后使用螺钉将LED灯盘30固装于散热座10上，然后将灯罩40之勾部41与导热板33之勾槽332相互卡扣锁勾外罩住LED灯盘30，安装时用力向下压灯罩40即可方便扣合。接着，将灯头20的上端插入塑胶套筒11的下端内，并且灯头20之勾部211与塑胶套筒11之扣孔112相互卡扣连接，灯头20被固装于散热座10的下端。组装后的LED照明灯泡如图1所示。
本发明的使用方法也很简单，只需将灯头20安装于外部插头上然后通上电源即可，电源与LED灯盘30导通，LED灯体32即发出光线，光线透过灯罩40照射出来，同时LED灯体32产生的热量依次通过散热基板31、导热板33和搭片122传递到散热翅片12之主体123上进行散热，热量通过散热孔124和间隙101形成很好的对流作用，能够快速地被散去，延长LED灯体32的使用寿命。
本发明的设计重点在于：
首先，通过将散热翅片固装于塑胶套筒上而形成该散热座体，能有效减少散热材料的使用，重量轻，并可大大降低散热座的制造成本。而且利用塑胶套筒具有的绝缘性能，使得散热座具备了很好的绝缘性，不需要另外增加绝缘体即可将电路板安装散热座内，还可进一步降低制造成本。以及，利用散热翅片之搭片使得散热翅片与导热板的接触面积更大，从而可增大散热翅片的受热面积，使得热量能快速传递到散热翅片上，散热性能好。
其次，利用散热翅片与塑胶套筒镶嵌注塑成型连接，使得该散热座的加工方便和LED照明灯泡的组装简便，并可进一步降低散热座以及LED照明灯泡的制造成本。
再者，利用散热翅片上设置的散热孔可使热量形成对流，使热量散去的速度更快，进一步可提高散热座的散热性能。
以上所述，仅是本发明的较佳实施例而已，并非对本发明的技术范围作任何限制，故凡是依据本发明的技术实质对以上实施例所作的任何细微修改、等同变化与修饰，均仍属于本发明技术方案的范围内。

Claims (10)

1、一种LED照明灯泡，包括有灯头、散热座、LED灯盘和灯罩，该散热座安装于灯头的上端，该LED灯盘安装于散热座的上端面，该灯罩外罩住LED灯盘，其特征在于：所述散热座包括有塑胶套筒和散热翅片，该散热翅片朝外呈辐射状阵列式固装于塑胶套筒的周缘上；以及，该散热翅片的上端折弯形成有一搭片，该搭片外露于塑胶套筒的上端面，该灯盘抵于搭片上，该搭片用于增大散热翅片的受热面积，使灯盘之热量快速传递到散热翅片上进行散热。
2、根据权利要求1所述的LED照明灯泡，其特征在于：所述散热翅片与塑胶套筒为镶嵌注射成型连接。
3、根据权利要求1所述的LED照明灯泡，其特征在于：所述LED灯盘包括有LED灯体、散热基板和导热板，该LED灯体固装于基板的上表面，该基板抵于导热板的上表面，该导热板的底面与前述搭片接触。
4、根据权利要求1所述的LED照明灯泡，其特征在于：所述搭片与散热翅片主体呈90°折弯。
5、根据权利要求1所述的LED照明灯泡，其特征在于：所述散热翅片的主体上设置有散热通孔，该散热通孔用于使热量形成对流增强散热翅片的散热效果。
6、一种散热座，其特征在于：所述散热座包括有塑胶套筒和散热翅片，散热翅片朝外呈辐射状阵列式固装于塑胶套筒的周缘上，以及，该散热翅片的上端折弯形成有搭片，该搭片外露于塑胶套筒的上端面，该搭片用于增大散热翅片的受热面积。
7、根据权利要求6所述的散热座，其特征在于：所述散热翅片与塑胶套筒为镶嵌注射成型连接。
8、根据权利要求6所述的散热座，其特征在于：所述散热翅片为散热性能较好的铝质材料。
9、根据权利要求6所述的散热座，其特征在于：所述搭片与散热翅片主体呈90°折弯。
10、根据权利要求6所述的散热座，其特征在于：所述散热翅片的主体上设置有散热通孔，该散热通孔用于使热量形成对流增强散热翅片的散热效果。
PCT/CN2010/074463 2010-06-25 2010-06-25 Led照明灯泡及其散热座 WO2011160304A1 (zh)

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