WO2011069437A1 - 一种led灯泡 - Google Patents

一种led灯泡 Download PDF

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Publication number
WO2011069437A1
WO2011069437A1 PCT/CN2010/079509 CN2010079509W WO2011069437A1 WO 2011069437 A1 WO2011069437 A1 WO 2011069437A1 CN 2010079509 W CN2010079509 W CN 2010079509W WO 2011069437 A1 WO2011069437 A1 WO 2011069437A1
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WO
WIPO (PCT)
Prior art keywords
led
circuit board
lamp
leds
lampshade
Prior art date
Application number
PCT/CN2010/079509
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English (en)
French (fr)
Inventor
林世凯
Original Assignee
Lin Shikai
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Publication date
Application filed by Lin Shikai filed Critical Lin Shikai
Publication of WO2011069437A1 publication Critical patent/WO2011069437A1/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
    • F21V3/00—Globes; Bowls; Cover glasses
    • 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
    • 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
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/90—Light sources with three-dimensionally disposed light-generating elements on two opposite sides of supports or substrates
    • 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 present invention relates to the field of lighting fixtures, and more particularly to an LED bulb. Background technique
  • LEDs have been widely used in daily life because of their long life, low energy consumption, and significant energy savings.
  • some manufacturers have designed LED bulbs that can be directly installed in ordinary bulb sockets to replace existing bulbs such as tungsten lamps.
  • the commercially available LED bulb includes a lamp cap, a lamp cover, an aluminum substrate, and an LED mounted on the aluminum substrate.
  • the bottom end of the aluminum substrate is fixed with an aluminum alloy heat sink, and the lamp cap is fixed at the bottom end of the aluminum alloy heat sink, the lamp cap and the LED Electrical connection, the lamp cover is fixed on the top of the aluminum substrate, and is used for covering the LED.
  • the LED When the LED is working, the light generated by the LED can be radiated through the lamp cover to achieve the purpose of illumination.
  • the LED bulb is in operation, Since the LED generates a large amount of heat, only the aluminum alloy heat sink at the bottom of the aluminum substrate dissipates the heat generated by the LED in time to maintain the normal operation of the LED.
  • the existing LED bulbs generally have LEDs mounted on an aluminum substrate and are provided with an aluminum alloy heat sink.
  • the aluminum substrate and the aluminum alloy heat sink have a large weight and occupy a certain volume of the LED bulb, so that the existing LED bulbs The weight is large, the volume is large, and the production cost is high.
  • the LEDs in the LED bulb concentrate to emit light in one direction, causing the LED bulb to emit uneven light, forming dark areas on both sides of the LED bulb, which is also the LE bulb of the prior art.
  • the object of the present invention is to provide an LED bulb which is small in weight, small in volume, low in production cost, capable of rapid heat dissipation and uniform in illumination, in view of the deficiencies of the prior art.
  • the purpose of the utility model is to provide an LED bulb with small weight, small volume, low production cost and uniform illumination for the defects of the prior art.
  • An LED light bulb comprising a lamp cap, a lamp cover, an LED and a circuit board, wherein a bottom end of the lamp cover is fixedly mounted on a top end of the lamp cap, the circuit board is fixedly mounted in the lamp cover, the circuit board is connected with the lamp cap, and the circuit board is two criss-crossing blocks
  • the printed circuit board is configured such that a front side and a back side of each printed circuit board are respectively connected to the fixed LED; the lamp cover is filled with a mixed gas for conducting heat.
  • the LED (3) is a chip LED.
  • the circuit board is provided with a rectifier module, and the input end of the rectifier module is connected with the AC input end of the lamp cap, and the LED is connected in series between the positive output terminal and the negative output terminal of the rectifier module.
  • the lampshade is a transparent glass airtight cover.
  • the utility model has the beneficial effects: the utility model comprises a lamp cap, a lamp cover, an LED and a circuit board, wherein the bottom end of the lamp cover is mounted and fixed on the top end of the lamp cap, the circuit board is installed and fixed in the lamp cover, the circuit board is connected with the lamp cap, and the circuit board is vertical and horizontal
  • the two printed circuit boards are interlaced, and the front and back sides of each printed circuit board are respectively connected to fix LEDs;
  • the utility model fully dissipates the heat generated by the LEDs through the mixed gas, and has the advantages of small weight, small volume and low production cost.
  • LEDs are placed on the board of two printed circuit boards that are criss-crossed, installed in all directions With LED, the LED bulb is more uniform when illuminated.
  • Figure 1 is a schematic view of the structure of the present invention
  • FIG. 2 is a schematic structural view of a circuit board of the present invention
  • FIG. 3 is a schematic structural view of another circuit board of the present invention.
  • the LED bulb includes a lamp cap 1, a lampshade 2, an LED 3 and a circuit board 4.
  • the bottom end of the lampshade 2 is mounted and fixed at the top end of the lamp cap 1, so that the lamp cap 1 can be
  • the opening of the lampshade 2 is closed, the circuit board 4 is mounted and fixed in the lampshade 2, and the circuit board 4 is connected to the lamp cap 1.
  • the circuit board 4 is composed of two printed circuit boards which are criss-crossed, and the front and back sides of each printed circuit board are respectively connected to the fixed LEDs 3; the LEDs 3 are arranged on the circuit boards of the two printed circuit boards which are criss-crossed, in all directions LEDs are installed, and the LEDs emit light in all directions, which makes the LED bulbs more uniform when illuminated, and solves the problem that the existing LED bulbs are unevenly illuminated, and the LED bulbs have dark areas during illumination.
  • the circuit board 4 is composed of two printed circuit boards which are vertically and horizontally staggered into a "ten" shape, and the circuit board 4 has more planes oriented in different directions to mount the LEDs 3.
  • the circuit board 4 can also be formed by interleaving three or four printed circuit boards, and the circuit board 4 has more planes facing different directions to install the LEDs 3.
  • the lampshade 2 is filled with a mixed gas for conducting heat. Since the lampshade of the present invention is filled with a mixed gas, when the LED is operated to illuminate, the LED generates heat, and the mixed gas in the lampshade rises due to heat, thereby transferring the heat generated by the LED to the inner surface of the lampshade, and then Dissipated by the lampshade.
  • the mixed gas of the present embodiment is a nitrogen-argon mixed gas
  • the composition of the nitrogen-argon mixed gas is 30% nitrogen and 70% argon
  • the nitrogen-argon mixed gas of the component can quickly generate heat generated by the LED3. It is transmitted to the lampshade 2 and is emitted from the lampshade 2.
  • the nitrogen-argon mixed gas may also be mixed with other components as long as it has heat conduction.
  • the LED 3 of the embodiment is preferably a chip LED. Because the size of the chip LED is small and the heat generated during operation is less, the weight and volume of the LED bulb can be further reduced. Of course, the LED 3 can also adopt other forms. The LED is not limited to the patch LED selected in this embodiment.
  • the circuit board 4 is provided with a rectifying module 6.
  • the input end of the rectifying module 6 is connected to the AC input end of the lamp cap 1, and the LED 3 is connected in series between the positive output end and the negative output end of the rectifying module 6.
  • the lampshade 2 of the present embodiment is a transparent glass airtight cover, which can illuminate the light emitted by the LED 3 to achieve the purpose of illumination.
  • the lampshade 2 can also adopt other colored lampshades 2, such as milky.
  • the shape of the lampshade 2 may be a pointed shape, a spherical shape, an elliptical shape or the like, and is not limited to the pointed shape selected in the embodiment.
  • the circuit board 4 of the embodiment is provided with a rectifier module 6, the input end of the rectifier module 6 is connected to the AC input end of the lamp cap 1, and the LED 3 is connected in series to the positive output terminal of the rectifier module 6 and negative. Between the pole output terminals, more specifically, a plurality of LEDs 3 are connected in series in the same direction to form a light string, wherein one end of the positive pole of the light string is connected to the positive pole of the rectifier module 6, and one end of the negative pole of the light string is connected to the negative pole of the rectifier module 6.
  • the working principle is: The rectifier module 6 rectifies the alternating current input from the lamp cap 1 into a direct current, and supplies power to the plurality of LEDs 3.
  • the utility model When the utility model is used, it can replace the existing bulbs such as tungsten lamps, and the lamp cap 1 can be directly inserted into the existing ordinary bulb socket, and is powered by alternating current.
  • the LED 3 When the LED 3 is working, the mixed gas in the lampshade 2 is When heated and rising, the heat generated by the LED 3 can be conducted to the inner surface of the lamp cover 2, and then emitted by the lamp cover 2; compared with the existing LED light bulb, the utility model does not need to install a large weight aluminum substrate and aluminum alloy
  • the heat dissipating device can dissipate the heat generated by the LED3, and the assembly and production process is simple. Therefore, the utility model has the characteristics of small weight, small volume, low production cost and the like.

Landscapes

  • 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)

Description

一种 LED灯泡
技术领域 本实用新型涉及照明灯具技术领域， 尤其是涉及一种 LED灯泡。 背景技术
近年来， 因为 LED (Light Emitting diode,发光二极管） 的使用寿 命长、 能耗低、 节约能源显著， LED 作为光源已广泛地应用于日常生活 中。例如， 有些厂家设计出可以直接安装在普通灯泡插座中的 LED灯泡， 以取代现有的钨丝灯等灯泡。
目前， 市售的 LED灯泡包括灯头、 灯罩、 铝基板、 安装固定在铝基板 上的 LED, 铝基板的底端固定有铝合金散热装置， 灯头固定在铝合金散 热装置的底端， 灯头与 LED电连接， 灯罩安装固定在铝基板的顶端， 用 于罩住 LED,当 LED工作照明时， LED产生的光线可以透过灯罩照射出去， 达到照明的目的， 但是， 上述的 LED灯泡在工作时， 由于 LED会生大量 的热量， 只有通过铝基板底端的铝合金散热装置将 LED产生的热量及时 地散发出去， 才能保持 LED的正常工作， 否则， 会导致 LED的使用寿命 缩短， 甚至烧坏， 所以现有的 LED灯泡一般都会将 LED安装固定在铝基 板上， 并设置铝合金散热装置， 然而， 铝基板和铝合金散热装置的重量 较大， 而且占用 LED灯泡一定的体积， 使得现有 LED灯泡的重量大、 体 积大， 生产成本高。
另外， LED灯泡中的 LED集中向一个方向发射光线， 致使 LED灯泡 发光不均匀， 在 LED灯泡的两侧形成暗区， 这也是现有技术的 LE灯泡所 无法解决的问题 实用新型内容：
本发明的目的就是针对现有技术存在的不足而提供一种重量小、体 积小、 生产成本低， 能够快速散热、 发光均匀的 LED灯泡。 本实用新型 的目的就是针对现有技术存在的不足而提供一种重量小、 体积小、 生产 成本低， 发光均匀的 LED灯泡。
为了实现上述目的， 本实用新型 采用的技术方案是：
一种 LED灯泡， 它包括灯头、 灯罩、 LED和电路板， 灯罩底端安装 固定在灯头的顶端， 所述电路板安装固定在灯罩内， 电路板与灯头连接， 电路板为纵横交错的两块印刷电路板构成， 每块印刷电路板的正面和背 面分别悍接固定 LED; 所述灯罩内填充有用于传导热量的混合气体。
所述 LED ( 3 ) 为贴片式 LED。
所述电路板上设有整流模块， 整流模块的输入端与灯头的交流输入端连 接， LED串联连接在整流模块的正极输出端和负极输出端之间。
所述灯罩为透明玻璃气密罩。
本实用新型的有益效果： 本实用新型包括灯头、 灯罩、 LED和电路 板， 灯罩底端安装固定在灯头的顶端， 所述电路板安装固定在灯罩内， 电路板与灯头连接， 电路板为纵横交错的两块印刷电路板构成， 每块印 刷电路板的正面和背面分别悍接固定 LED; 本实用新型通过混合气全将 LED 产生的热量散发出去， 具有重量小、 体积小、 生产成本低的特点， LED 设置在由纵横交错的两块印刷电路板的电路板上， 各个方向都安装 有 LED, LED灯泡在发光时更加均匀 附图说明：
下面结合附图对本实用新型做进一步的说明：
图 1为本实用新型的结构示意图；
图 2为本实用新型的电路板的结构示意图；
图 3为本实用新型的电路板另一视角的结构示意图；
图 4为本实用新型的电路板的分解示意图； 具体实施方式：
下面结合附图对本实用新型作进一步的说明， 请参考图 1至 4， LED 灯泡包括灯头 1、 灯罩 2、 LED3和电路板 4， 灯罩 2底端安装固定在灯头 1的顶端， 使得灯头 1可将灯罩 2的开口封闭起来， 所述电路板 4安装 固定在灯罩 2内， 电路板 4与灯头 1连接。
所述电路板 4为纵横交错的两块印刷电路板构成， 每块印刷电路板 的正面和背面分别悍接固定 LED3 ; LED3设置在由纵横交错的两块印刷 电路板的电路板上， 各个方向都安装有 LED, 各个方向都有 LED发射的 光线， 使得 LED灯泡在发光时更加均匀，解决现有 LED灯泡发光不均匀， LED灯泡在照明时存在暗区的问题。
本实施例中， 电路板 4为纵横交错成 "十"字形状的两块印刷电路 板构成， 电路板 4具有更多的朝向不同方向的平面来安装 LED3。 当然， 所述电路板 4亦可以由三块、 四块印刷电路板交错而成， 电路板 4具有 更多的朝向不同方向的平面来安装 LED3。 所述灯罩 2内填充有用于传导热量的混合气体。 由于本实用新型的 灯罩内填充有混合气体， 当 LED工作照明时， LED会产生热量， 灯罩内 的混合气体则会因为受热而上升流动， 从而将 LED产生的热量传导至灯 罩的内表面， 再由灯罩散发出去。 更具体地说， 本实施例的混合气体为 氮氩混合气体， 氮氩混合气体的成份为 30 %氮气和 70 %氩气， 该种成份 的氮氩混合气体可以较快地将 LED3产生的热量传导给灯罩 2， 由灯罩 2 散发出去， 当然， 所述氮氩混合气体也可以采用其它的混合成份， 只要 其具有热量传导作用即可。
本实施例的 LED3优选为贴片式 LED, 因为贴片式 LED的体积小， 而 且工作时产生的热量较少， 可以进一步减少 LED灯泡的重量和体积， 当 然， 所述 LED3也可以采用其它形式的 LED, 不限于本实施例选用的贴片 式 LED。
所述电路板 4上设有整流模块 6， 整流模块 6的输入端与灯头 1的 交流输入端连接， LED3串联连接在整流模块 6的正极输出端和负极输出 端之间。
本实施例的灯罩 2为透明玻璃气密罩，可以让 LED3发出的光线照射 出去， 达到照明的目的， 当然， 为了达到照明的效果， 所述灯罩 2也可 以采用其它有颜色的灯罩 2， 如乳白色。 另外， 需要说明的是， 所述灯 罩 2的形状可以为尖顶形状、 球状、 椭圆状或其它形状， 不限于本实施 例选用的尖顶形状。
本实施例的电路板 4上设有整流模块 6， 整流模块 6的输入端与灯 头 1的交流输入端连接， LED3串联连接在整流模块 6的正极输出端和负 极输出端之间， 更具体地说， 复数个 LED3同向串联连接， 组成灯串， 其 中， 灯串正极的一端与整流模块 6的正极连接， 灯串负极的一端与整流 模块 6的负极连接， 其工作原理是： 整流模块 6将灯头 1输入的交流电 整流为直流电， 为复数个 LED3提供电源。
本实用新型在使用时， 可以取代现有的钨丝灯等灯泡， 灯头 1可以 直接插接在现有的普通灯泡插座中， 由交流电供电 ， 当 LED3工作照明 时， 灯罩 2内的混合气体因为受热而上升流动， 可以将 LED3产生的热量 传导至灯罩 2的内表面， 再由灯罩 2散发出对； 与现有的 LED灯泡相比， 本实用新型无需安装重量较大的铝基板和铝合金散热装置， 即可将 LED3 产生的热量散发出去， 而且， 组装生产过程简单， 因此， 本实用新型具 有重量小、 体积小、 生产成本低等特点。
以上内容仅为本实用新型的较佳实施例， 对于本领域的普通技术人 员， 依据本实用新型的思想， 在具体实施方式及应用范围上均会有改变 之处， 本说明书内容不应理解为对本实用新型的限制。

Claims

权 利 要 求 书
1、 一种 LED灯泡， 它包括灯头 （1)、 灯罩 （2)、 LED (3) 和电路板 (4)， 灯罩 （2) 底端安装固定在灯头 （1) 的顶端， 其特征在于： 所 述电路板 （4) 安装固定在灯罩 （2) 内， 电路板 （4) 与灯头 （1) 连 电路板（4)为纵横交错的两块印刷电路板构成， 每块印刷电路板的 正面和背面分别悍接固定 LED (3)； 所述灯罩 （2) 内填充有用于传导热量的混合气体。
2、 根据权利要求 1所述的一种 LED灯泡， 其特征在于： 所述 LED (3) 为贴片式 LED。
3、 根据权利要求 2所述的一种 LED灯泡， 其特征在于： 所述电路板 (4) 上设有整流模块 （6)， 整流模块 （6) 的输入端与灯头 （1) 的 交流输入端连接， LED (3) 串联连接在整流模块 （6) 的正极输出端 和负极输出端之间。
4、 根据权利要求 3所述的一种 LED灯泡， 其特征在于： 灯罩 （2) 为透
PCT/CN2010/079509 2009-12-09 2010-12-07 一种led灯泡 WO2011069437A1 (zh)

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CN200920179985.3 2009-12-09
CN2009201799853U CN201555054U (zh) 2009-12-09 2009-12-09 一种led灯泡

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