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High power LED street lamp with high heat dispersion

A LED street light, high-power technology, applied in energy-saving lighting, circuit layout, climate sustainability, etc., can solve the problems of shifting yellow phosphor excitation peak, chip luminous efficiency reduction, light conversion efficiency reduction, etc., to avoid heat source Over-concentration, good heat conduction, and the effect of improving performance and reliability

Inactive Publication Date: 2010-08-25
SHANGHAI UNIV +1
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AI Technical Summary

Problems solved by technology

[0005] The influence of rising LED chip junction temperature on LED reliability is as follows: (1) The luminous intensity decreases, and the luminous efficiency of the chip will also decrease accordingly. The higher the chip junction temperature, the faster the luminous intensity drops
(2) The main wavelength of light emission shifts. When the temperature of the LED increases, the approximate change of the wavelength of the LED is that the junction temperature rises by 10°C, and the wavelength red shifts by 1nm. The change of the main wavelength will cause the change of the color mixing effect. It also shifts the excitation peak of the yellow phosphor, resulting in a decrease in light conversion efficiency
(3) Seriously reduce the life of the LED and accelerate the light decay of the LED

Method used

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  • High power LED street lamp with high heat dispersion
  • High power LED street lamp with high heat dispersion
  • High power LED street lamp with high heat dispersion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: Referring to Fig. 1 and Fig. 2, the high-power LED street lamp with high heat dissipation performance includes a light source assembly installed in a closed cavity composed of a lamp housing 3 and a secondary optical lens 8, which is characterized in that the light source assembly is composed of A power supply control module 4 connected to a power supply is formed by connecting a high heat dissipation and high power LED light source assembly 6 .

Embodiment 2

[0034] Embodiment 2: This example is basically the same as Embodiment 1, and the special features are as follows: Refer to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6.

[0035] The structure of the above-mentioned high heat dissipation and high-power LED light source assembly 6 is: a copper plate 11 is equipped with a heat pipe 10 and fins 12, a high-power LED module 9 is in direct contact with the heat pipe 10, and the copper plate 11 is connected to the heat pipe 10 through a screw 5. The lamp housing 1 is fixedly connected.

[0036] The above-mentioned high-power LED module 9 is packaged with a plurality of high-power LED blue light chips on a ceramic substrate and coated with YAG phosphor;

[0037] One end of the heat pipe 10 is embedded in the copper plate 11 , and the other end passes through the fin 12 , and the fin 12 is embedded on the lower surface fixedly connected to the copper plate 11 .

[0038] The above-mentioned power control module 4 is powered on thro...

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Abstract

The invention relates to a high power LED street lamp with high heat dispersion. The LED street lamp comprises a light source component installed in a closed hollow cavity formed by a lamp shell and a secondary optical lens, and the light source component is formed by a power control module connected to a light source and a high power LED module with high heat dispersion, improves the performance and the reliability of the high power LED street lamp, and is beneficial to the early popularization of LED street illumination.

Description

technical field [0001] The invention relates to a high-power LED street lamp with high heat dissipation performance, mainly starts from two key technologies of heat dissipation and light distribution, improves the performance and reliability of the high-power LED street lamp, and is beneficial to the popularization of the high-power LED street lamp. Background technique [0002] Reference standards: National Standard GB 7000.5-2005 / IEC 60598-2-3: 2002 Safety Requirements for Road and Street Lighting Lamps, National Standard GB 7000.1-2007 / IEC 60598-1: Part 1 of 2003 Lamps, etc. [0003] The energy consumption in the field of lighting accounts for 20% of the total electric energy. Since the birth of LED, it has been valued by countries all over the world for its advantages of high efficiency, energy saving, environmental protection, and long life. At present, the electric energy used for road lighting in my country is about 250 billion kWh every year. If one-third of the stre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V23/00F21V19/00F21V29/00F21V5/04F21V17/12F21W131/103F21Y101/02F21V29/50F21V29/74
CPCY02B20/72
Inventor 吴军殷录桥张建华李抒智杨卫桥
Owner SHANGHAI UNIV
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