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LED Road Light Three Aspects Of The Heat Of The Experimental Study You Know?
May 25, 2017

LED Road Light lamp cooling three aspects of experimental research you know what?

Through the practical application, demonstrated that LED Road Light with energy saving, environmental protection, long life, brightness color temperature adjustable, high color rendering and other advantages. With the LED Road Light is mature, the efficiency of continuous improvement, LED Road Light lighting is the trend, but also the best energy-saving program. LED Road Light lighting system, energy-saving features mainly determined by the LED chip and power. However,LED Road Light and power modules are integrated together, the general space is small, poor heat dissipation, LED Road Light and power are heating elements, making the ambient temperature is high. Therefore, this paper by improving the thermal conditions of LED Road Light lamp system to improve the luminous efficiency of LED and power efficiency to reduce the ambient temperature, so that LED power and LED chip life to match, to achieve real energy saving, environmental protection, long life.

Then the LED Road Light lamp three aspects of experimental study you know what? Here to talk about the main three aspects of the contents of it!

Experimental Study on Thermal Relation of LED Road Light Lamp. The relationship between the power distribution and the temperature distribution is studied in the two kinds of power supply modes, constant current and constant voltage. Set up LED Road Light lamp thermoelectric relationship research platform, analysis of experimental results. It is found that under constant current conditions, there is a clear linear relationship between the junction temperature and the forward voltage of the LED. The voltage drop characteristics of the LED are verified, and the junction temperature of the LED can be measured with a large current, which is different from the traditional small current measurement The Constant current drive and constant voltage drive compared to the total output power of the power more stable, however, between the multi-channel LED, due to uneven temperature distribution, the corresponding power distribution to contain each other, the high temperature that LED occupies a higher power, easy Forming a vicious circle. Therefore, the thermal balance design of the overall quality of LED Road Light to improve has a very important significance.

2.LED Road Light lamp radiator optimization design. Taking a company 150WLED Road Light lamp as the research object, establish the heat sink thermal resistance network model, the theoretical design to meet the cooling requirements of the radiator. On this basis, the icepak thermal analysis software is used to optimize the design. The rationality of the existing radiator design is verified, and the theoretical results are in good agreement with the optimized results. It is shown that the theoretical calculation is an important part in the radiator design. Combined with software optimization can reduce R & D costs, shorten the R & D cycle, improve research and development efficiency.

3.LED Road Light lamp power module cooling design. On the basis of designing the LED power supply circuit, the heat flow path and the relevant thermal resistance are analyzed, and the two heat dissipation devices are designed with the shortest heat flow path as the goal. For the power supply cooling a small space, try to micro heat pipe for LED power module cooling. The results show that the two schemes can meet the thermal design requirements of electronic equipment, and the use of micro heat pipe device cooling performance than the other program has about 5 ℃ improvement.

Above on the LED Road Light lamp electronic heat dissipation data from the South China University of Technology master's degree design study outline.