WO2005121636A1 - A high efficiency semiconductor energy saving lamp - Google Patents

A high efficiency semiconductor energy saving lamp Download PDF

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Publication number
WO2005121636A1
WO2005121636A1 PCT/CN2005/000796 CN2005000796W WO2005121636A1 WO 2005121636 A1 WO2005121636 A1 WO 2005121636A1 CN 2005000796 W CN2005000796 W CN 2005000796W WO 2005121636 A1 WO2005121636 A1 WO 2005121636A1
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Prior art keywords
saving lamp
supply circuit
light
semiconductor energy
energy
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PCT/CN2005/000796
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French (fr)
Chinese (zh)
Inventor
Shudi Zhu
Keqing Liao
Youning Zhu
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Shudi Zhu
Keqing Liao
Youning Zhu
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Publication of WO2005121636A1 publication Critical patent/WO2005121636A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
    • F21S8/086—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device attached sideways of the standard, e.g. for roads and highways
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/34—Voltage stabilisation; Maintaining constant voltage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • 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 belongs to the field of lighting lamps, and particularly relates to a high-efficiency semiconductor energy-saving lamp. Background technique
  • semiconductor energy-saving lamps rely on semiconductor light emission, which refers to a semiconductor display device that can emit light when a forward current is passed on the semiconductor PN junction.
  • Its light-emitting chip is usually a ⁇ -V compound extrinsic semiconductor, which is epitaxial through the liquid phase. The diffusion process forms a PN junction, and the peak wavelength, quantum efficiency, light intensity, and color of light emission are determined according to the doping of different impurities and concentrations. At present, there are approximately seven types of light emitting diodes.
  • light emitting diodes have the advantages of long life, low power consumption, small size, high brightness, multi-color display, good operating temperature stability, and fast response time, they have been widely used. Its form can be divided into point light emission, combination light emission and character display, etc., which can be used alone or in series and parallel. It has a wide range of uses. In the past, it was mainly used as indicator lights, digital tubes, matrix tubes, and was used in various instruments, digital instruments, computers, car meters, aircraft, household appliances, electronic toys, etc., and also used for optical fiber communication, information processing, and automatic control. Into a display screen.
  • the technical problem to be solved by the present invention is that for existing lighting lamps such as incandescent lamps, fluorescent lamps, and high-pressure pump lamps, there are many disadvantages such as electricity, low light conversion efficiency, high energy consumption, poor safety, short life, and environmental pollution. .
  • the object of the present invention is to provide a high-efficiency semiconductor energy-saving lamp with a voltage reduction device, so as to solve the above technical problems.
  • a high-efficiency semiconductor energy-saving lamp includes a lamp cap, a light-emitting diode power supply circuit, and a mains input power supply circuit.
  • the light-emitting diode power supply of the voltage reduction device in the present invention may further be: Transformer or step-down circuit.
  • the step-down device can reduce the mains peak voltage 220 ⁇ - ⁇ 2 V to 36V.
  • the light-emitting diode power supply circuit of the present invention may further include a complex full-wave rectification circuit, and the complex full-wave rectification circuit has two sets of stable DC voltages, respectively.
  • the output end of the complex full-wave rectifier circuit is connected in series and parallel to a plurality of identical light-emitting diodes, and is assembled in a box body.
  • the plurality of light emitting diodes it can adopt 6 to 60. Take an appropriate number according to different use occasions to form the required arc tube assembly.
  • the light-emitting part of the energy-saving lamp is rectangular or square in shape and has a light-transmitting outer cover.
  • the entire energy-saving lamp is made into a wall lamp and a lighting fixture.
  • the semiconductor energy-saving lamp can obviously save energy, has high working efficiency, high safety, long service life, and has great development prospects.
  • BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an embodiment of a high-efficiency semiconductor energy-saving lamp
  • FIG. 1 an embodiment of the energy saving lamp as a wall lamp is shown, and FIG. 2 is an electronic circuit used by the energy saving lamp.
  • the high-efficiency semiconductor energy-saving lamp of the present invention includes a lamp cap, a light-emitting diode power supply circuit, and a mains input power supply circuit.
  • the light-emitting diode power supply circuit includes a P-compression device for reducing the peak voltage of the mains power input from the mains input power supply circuit. .
  • the step-down device in the present invention may further be a transformer or a step-down circuit.
  • 5 is a transformer.
  • the step-down device can reduce the mains voltage 220 xj2 V to 36V.
  • the light-emitting diode power supply circuit in the present invention may further include a complex full-wave rectification circuit, and the complex full-wave rectification circuit has two sets of stable DC voltages, respectively.
  • the output end of the complex full-wave rectifier circuit is connected in series and parallel to a plurality of identical light-emitting diodes, and is assembled in a box.
  • the semiconductor energy-saving lamp was tested according to the electronic circuit shown in Figure 2: a 15-watt incandescent lamp (tube A is called) and a 1-watt light-emitting tube assembly (referred to as B lamp) of the energy-saving lamp, using precision optics
  • B lamp 1-watt light-emitting tube assembly
  • the instrument measures the illuminance of 0.3 m, 0.5 m, and 1 m from the light source, and its unit is lux (Lx) for comparison. See Table 1 for details.
  • (4-6) fli 2 's kitchen or toilet uses 2 watts or more than 2 watts of B lights, which is clear enough Bright.
  • the high-efficiency semiconductor energy-saving lamp breaks through the shackles of the mains peak voltage.
  • the mains peak voltage is the voltage value of the mains voltage multiplied by ⁇ . After the voltage is reduced, a 36V or corresponding rectifier AC power source can be used to make it.
  • the working efficiency of the semiconductor PN junction has been greatly improved, which in turn has enabled its high-efficiency semiconductor energy-saving lamps to achieve energy savings of 2 to 10 times.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Led Device Packages (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The present invention relates to the high efficiency semiconductor energy saving lamp in the illuminating field. The semiconductor energy saving lamp comprises lamp cap, current supply circuit of LED and input current supply circuit of electric power supply, which characterized in that the said current supply circuit of LED comprises a reducing voltage equipment for reducing the peak voltage of input current supply circuit. The semiconductor energy saving lamp can obviously save energy, the electric energy consumption is less twice to ten times than an incandescent lamp with the same brightness, it possesses the high work efficiency, safety, convenience, long service lifetime and good developing prospect.

Description

高效半导体节能灯 技术领域  High-efficiency semiconductor energy-saving lamps
本发明属于照明灯领域， 特别涉及到一种高效半导体节能灯。 背景技术  The invention belongs to the field of lighting lamps, and particularly relates to a high-efficiency semiconductor energy-saving lamp. Background technique
半导体节能灯依靠半导体的发光， 是指在半导体 PN结上， 通以正向电流 时能发光的半导体显示器件， 它的发光芯片通常是用 ΠΙ - V族化合物非本征 半导体， 通过液相外延、 扩散工艺形成 PN结， 根据掺入不同杂质及浓度， 决 定发光的峰值波长、 量子效率、 光强及颜色， 就目前来说， 发光二极管的发 光颜色大致有 7种。  Semiconductor energy-saving lamps rely on semiconductor light emission, which refers to a semiconductor display device that can emit light when a forward current is passed on the semiconductor PN junction. Its light-emitting chip is usually a ΠΙ-V compound extrinsic semiconductor, which is epitaxial through the liquid phase. The diffusion process forms a PN junction, and the peak wavelength, quantum efficiency, light intensity, and color of light emission are determined according to the doping of different impurities and concentrations. At present, there are approximately seven types of light emitting diodes.
由于发光二极管具有寿命长、 功耗低、 体积小、 亮度高、 多色显示、 工 作温度稳定性好， 响应时间快等优点， 已被广泛的采用。 其形式可以分为点 发光、 组合体发光和字符显示等， 现可单支使用， 也可串并联使用， 用途十 分广泛。 过去主要作指示灯、 数码管、 矩阵管， 应用在各种仪器、 数字化仪 表、 计算机、 汽车仪表、 飞机、 家用电器、 电子玩具等， 也可用于光纤通讯、 信息处理及自动控制， 并可制成显示屏幕。  Because light emitting diodes have the advantages of long life, low power consumption, small size, high brightness, multi-color display, good operating temperature stability, and fast response time, they have been widely used. Its form can be divided into point light emission, combination light emission and character display, etc., which can be used alone or in series and parallel. It has a wide range of uses. In the past, it was mainly used as indicator lights, digital tubes, matrix tubes, and was used in various instruments, digital instruments, computers, car meters, aircraft, household appliances, electronic toys, etc., and also used for optical fiber communication, information processing, and automatic control. Into a display screen.
现今它呈现出更为广阔的应用前景， 发光半导体对人类最大的贡献作用 将是高效半导体节能灯的应用， 可以制成各种照明灯、 壁灯， 并组装成汽车 灯、 霓虹灯等， 应用电子电路技术做成新型复式全波整流、 滤波电路， 与发 光管之组合体， 可构成新一代高效节能达数倍的照明电灯。  Today it presents a broader application prospect. The biggest contribution of light-emitting semiconductors to humans will be the application of high-efficiency semiconductor energy-saving lamps, which can be made into various lighting lamps, wall lamps, and assembled into automobile lamps, neon lamps, etc., and apply electronic circuits. The technology is made into a new type of full-wave rectification, filter circuit, and a combination of light-emitting tubes, which can constitute a new generation of high-efficiency energy-saving lighting lamps.
随着工业迅速发展， 用电量日益巨增， 节约用量成为当务之急， 因而采 用新技术， 提高灯的发光效率， 将原有照明灯泡、 灯管更新换代。 经过研究、 实验、 测试表明， 可以实现节省电能（2 - 10 )倍， 由于 PN结代替钨丝灯进 行发光照明， 除节能之外， 这种灯还具有长寿命效果。  With the rapid development of the industry, the power consumption has increased dramatically, and saving energy has become an urgent task. Therefore, new technologies have been adopted to improve the luminous efficiency of lamps and replace the original lighting bulbs and tubes. After research, experiment and test, it can be realized that it can save electric energy (2-10) times. Since PN junction replaces tungsten filament lamp for luminous lighting, in addition to energy saving, this lamp also has a long life effect.
业内有关人士预言， 半导体节能灯将最终取代全球家庭和办公室所用的 白炽灯和荧光灯， 新型白色电光源将改变人们的生活方式， 同时也将改变我 们节约能源的方式， 本发明发明的半导体节能灯节省电能将是白炽灯的 2至 10倍， 显然它取代传统白炽灯， 这一发明成果的作用将会在未来五至十年中 显现， 必将明显降低全球能耗。 发明内容 Industry insiders predict that semiconductor energy-saving lamps will eventually replace those used in homes and offices around the world Incandescent and fluorescent lamps, the new white electric light source will change people's lifestyles, and will also change the way we save energy. The semiconductor energy-saving lamp of the invention will save 2 to 10 times the electricity of incandescent lamps. Obviously, it replaces traditional incandescent The effect of this invention will be shown in the next five to ten years, and it will definitely reduce global energy consumption. Summary of the invention
本发明需要解决的技术问题是， 针对已有白炽灯、 荧光灯、 高压泵灯等 多种照明灯具存在着电、 光转换效率低、 耗能高、 安全性差、 寿命短， 而且 污染环境等诸多弊病。 本发明的目的， 在于提供一种具有降压装置的高效半 导体节能灯， 解决上述技术问题。  The technical problem to be solved by the present invention is that for existing lighting lamps such as incandescent lamps, fluorescent lamps, and high-pressure pump lamps, there are many disadvantages such as electricity, low light conversion efficiency, high energy consumption, poor safety, short life, and environmental pollution. . The object of the present invention is to provide a high-efficiency semiconductor energy-saving lamp with a voltage reduction device, so as to solve the above technical problems.
本发明的目的，是依靠以下技术方案来实现的， 一种高效半导体节能灯， 包括灯头、 发光二极管供电回路及市电输入供电回路， 所述发光二极管供电 本发明中的降压装置可进一步为变压器或降压电路。  The object of the present invention is achieved by the following technical solutions. A high-efficiency semiconductor energy-saving lamp includes a lamp cap, a light-emitting diode power supply circuit, and a mains input power supply circuit. The light-emitting diode power supply of the voltage reduction device in the present invention may further be: Transformer or step-down circuit.
作为一个具体的实施例子， 所述的降压装置可将市电峰值电压 220 χ-ί2 V 降为 36V。  As a specific implementation example, the step-down device can reduce the mains peak voltage 220 χ-ί2 V to 36V.
本发明中的发光二极管供电回路还可包括复式全波整流电路， 该复式全 波整流电路分别具有两组稳定直流电压。 所述的复式全波整流电路的输出端 串并联连接多个完全相同的发光二极管， 并装配在盒体内。  The light-emitting diode power supply circuit of the present invention may further include a complex full-wave rectification circuit, and the complex full-wave rectification circuit has two sets of stable DC voltages, respectively. The output end of the complex full-wave rectifier circuit is connected in series and parallel to a plurality of identical light-emitting diodes, and is assembled in a box body.
所述多个发光二极管， 它可以采用 6 - 60个。 根据不同的使用场合取其 适当的数目， 以构成所需要的发光管组合体。 本节能灯的发光部份， 外形为 长方形或正方形， 并有可透光之外罩， 整个节能灯做成壁灯以及一 ^：的照明 灯具。  For the plurality of light emitting diodes, it can adopt 6 to 60. Take an appropriate number according to different use occasions to form the required arc tube assembly. The light-emitting part of the energy-saving lamp is rectangular or square in shape and has a light-transmitting outer cover. The entire energy-saving lamp is made into a wall lamp and a lighting fixture.
本发明的有益效果是， 该半导体节能灯具可以明显节能， 工作效率高， 安全性高， 使用寿命长， 很有发展前景。 附图说明 图 1为高效半导体节能灯的一种实施例 The beneficial effects of the present invention are that the semiconductor energy-saving lamp can obviously save energy, has high working efficiency, high safety, long service life, and has great development prospects. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an embodiment of a high-efficiency semiconductor energy-saving lamp
图 2为本节能灯所采用的电子线路 具体实施方式  Figure 2 Electronic circuit used for this energy-saving lamp
参照图 1 , 表示本节能灯作为壁灯的一种实施例， 图 2为本节能灯所采 用的电子线路。  Referring to FIG. 1, an embodiment of the energy saving lamp as a wall lamp is shown, and FIG. 2 is an electronic circuit used by the energy saving lamp.
本发明的高效半导体节能灯， 包括灯头、 发光二极管供电回路及市电输 入供电回路， 所述发光二极管供电回路包括有对市电输入供电回路输入的市 电峰值电压进行降压的 P争压装置。  The high-efficiency semiconductor energy-saving lamp of the present invention includes a lamp cap, a light-emitting diode power supply circuit, and a mains input power supply circuit. The light-emitting diode power supply circuit includes a P-compression device for reducing the peak voltage of the mains power input from the mains input power supply circuit. .
本发明中的降压装置可进一步为变压器或降压电路。 在本实施例中， 如 图 2所示 5 采用的是变压器。 The step-down device in the present invention may further be a transformer or a step-down circuit. In this embodiment, as shown in FIG. 2, 5 is a transformer.
在本实施例中， 所述的降压装置可将市电峰值电压 220 xj2 V降为 36V。 如图 2所示， 本发明中的发光二极管供电回路还可包括复式全波整流电 路， 该复式全波整流电路分别具有两组稳定直流电压。 所述的复式全波整流 电路的输出端串并联连接多个完全相同的发光二极管， 并装配在盒体内。  In this embodiment, the step-down device can reduce the mains voltage 220 xj2 V to 36V. As shown in FIG. 2, the light-emitting diode power supply circuit in the present invention may further include a complex full-wave rectification circuit, and the complex full-wave rectification circuit has two sets of stable DC voltages, respectively. The output end of the complex full-wave rectifier circuit is connected in series and parallel to a plurality of identical light-emitting diodes, and is assembled in a box.
按如图 2所示的电子线路将该半导体节能灯进行了测试：将 15瓦白炽灯 (筒称 A灯）， 与本节能灯 1瓦之发光管组合体 (简称 B灯）， 运用精密光学 仪器， 测量离光源 0. 3米、 0. 5米、 1米的照度， 其单位为勒克斯（Lx ), 以 作比较。 详见表一。  The semiconductor energy-saving lamp was tested according to the electronic circuit shown in Figure 2: a 15-watt incandescent lamp (tube A is called) and a 1-watt light-emitting tube assembly (referred to as B lamp) of the energy-saving lamp, using precision optics The instrument measures the illuminance of 0.3 m, 0.5 m, and 1 m from the light source, and its unit is lux (Lx) for comparison. See Table 1 for details.
表一、 表中 A灯、 B灯数据单位为 Lx  Table 1.The data unit of A lamp and B lamp in the table is Lx
Figure imgf000005_0001
Figure imgf000005_0001
实际上， （4 - 6 ) fli2的厨房或洗手间， 采用 2瓦或 2瓦多的 B灯， 足够明 亮。 In fact, (4-6) fli 2 's kitchen or toilet uses 2 watts or more than 2 watts of B lights, which is clear enough Bright.
分析： 用 110 - 220伏交流电源， 直接经过整流， 滤波电路， 作发光管照 明电灯， 其功耗约 6瓦或 6瓦以上， 如针对 15瓦白炽灯， 节能灯节能效率被 限定在 70 %左右。 在许多场合， 难以更进一步节能。  Analysis: Use 110-220 volt AC power supply directly as rectifier and filter circuit as the lighting tube lighting lamp. Its power consumption is about 6 watts or more. For 15-watt incandescent lamps, the energy-saving efficiency of energy-saving lamps is limited to 70%. about. In many cases, it is difficult to further save energy.
本高效半导体节能灯关键性突破了市电峰值电压的束缚， 该市电峰值电 压为市电电压乘以 ^的电压数值， 在降压后， 可采用 36V或相应数值的整流 器交流电源， 使其半导体 PN结的工作效率大大提高， 进而使其高效半导体节 能灯节能效率达 2 - 10倍。  The high-efficiency semiconductor energy-saving lamp breaks through the shackles of the mains peak voltage. The mains peak voltage is the voltage value of the mains voltage multiplied by ^. After the voltage is reduced, a 36V or corresponding rectifier AC power source can be used to make it The working efficiency of the semiconductor PN junction has been greatly improved, which in turn has enabled its high-efficiency semiconductor energy-saving lamps to achieve energy savings of 2 to 10 times.

Claims

权利要求书 Claim
1、 一种高效半导体节能灯， 包括灯头、 发光二极管供电回路及市电输入 供电回路， 其特征在于， 所述发光二极管供电回路包括有对市电输入供电回 路输入的市电峰值电压进行降压的降压装置， 该降压装置设置于灯头内。 1. A high-efficiency semiconductor energy-saving lamp, comprising a lamp cap, a light-emitting diode power supply circuit, and a mains input power supply circuit, wherein the light-emitting diode power supply circuit includes a step-down voltage of a mains peak voltage input from the mains input power supply circuit. A voltage reduction device, which is disposed in the lamp cap.
2、根据权利要求 1所述的高效半导体节能灯， 其特征在于， 所述的降压 装置为变压器或降压电路。  2. The high-efficiency semiconductor energy-saving lamp according to claim 1, wherein the step-down device is a transformer or a step-down circuit.
3、 如权利要求 1所述的高效半导体节能灯， 其特征在于， 所述的降压装 置将市电峰值电压 220 χ]2 V降为 36V。  3. The high-efficiency semiconductor energy-saving lamp according to claim 1, wherein the step-down device reduces the mains peak voltage 220 χ] 2 V to 36V.
4、 根据权利要求 1所述的高效半导体节能灯， 其特征在于， 所述的发光 二极管供电回路还包括复式全波整流电路， 该复式全波整流电路分别具有两 組稳定直流电压。  4. The high-efficiency semiconductor energy-saving lamp according to claim 1, wherein the light-emitting diode power supply circuit further comprises a complex full-wave rectifier circuit, and the complex full-wave rectifier circuit has two groups of stable DC voltages, respectively.
5、 如权利要求 4所述的高效半导体节能灯， 其特征在于， 所述的复式全 波整流电路的输出端串并联连接多个完全相同的发光二极管， 并装配在盒体 内。  5. The high-efficiency semiconductor energy-saving lamp according to claim 4, wherein an output end of the dual full-wave rectifier circuit is connected in series and parallel to a plurality of identical light-emitting diodes, and is assembled in a box body.
6、根据权利要求 5所述的节能灯， 其特征在于， 所述的发光二极管的数 量为 6 - 60个。  6. The energy-saving lamp according to claim 5, wherein the number of the light-emitting diodes is 6 to 60.
PCT/CN2005/000796 2004-06-07 2005-06-07 A high efficiency semiconductor energy saving lamp WO2005121636A1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2260237Y (en) * 1995-12-21 1997-08-20 中山大学 Semiconductor energy-saving lamp
EP0876085A2 (en) * 1997-04-24 1998-11-04 Incerti & Simonini di Incerti Edda & C. S.n.c. A low tension lighting device
CN2465546Y (en) * 2001-02-12 2001-12-19 姚广军 Travelling toothbrush
CN2618045Y (en) * 2003-03-10 2004-05-26 许顺喜 LED lamp bulb
CN2619145Y (en) * 2003-05-17 2004-06-02 陈其芳 Electronic colour changing lamp

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2260237Y (en) * 1995-12-21 1997-08-20 中山大学 Semiconductor energy-saving lamp
EP0876085A2 (en) * 1997-04-24 1998-11-04 Incerti & Simonini di Incerti Edda & C. S.n.c. A low tension lighting device
CN2465546Y (en) * 2001-02-12 2001-12-19 姚广军 Travelling toothbrush
CN2618045Y (en) * 2003-03-10 2004-05-26 许顺喜 LED lamp bulb
CN2619145Y (en) * 2003-05-17 2004-06-02 陈其芳 Electronic colour changing lamp

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