Second difficulty: Heat dissipation

Second difficulty: Heat dissipation

  • 2020-09-15
  • Views:0

Second difficulty: Heat dissipation

(Summary description)

  • Categories:NEWS
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  • 2020-09-15
  • Views:0

Take the 10-watt LED bulb lamp as an example, assuming that the power efficiency is 85%, that is, the driving LED power is 8.5 watts, and the power consumption itself is 1.5 watts. It is assumed that the LED luminous efficiency is 30%, that is, 70% of the power into heat needs to be emitted. Now add 1.5 watts to the power source, and you get 7.8 watts, which adds 19.2 heat. Integrating this power into the aluminum substrate also increases the junction temperature of the LED by 15.8 percent. Assuming that the original LED junction temperature was 85℃, the current LED junction temperature will increase to 98.4℃, which will reduce the life of the LED.
In this case, only the linear constant current source with high efficiency can realize the optical engine, and its advantages lie in the high efficiency and the smoothness of the optical effect. Efficient drive reduces overall heat.
Yan Chongguang, an adjunct professor at Peking University's Shanghai Institute of Microelectronics and an expert in LED lighting technology, said that using an optical engine improves the overall performance of LED lamps and greatly accelerates the promotion of LED lamps.
Under the premise of the same cost as foreign similar products, the integrated optical efficiency index of Effile optoelectronic products exceeds 30%, thus becoming the first Chinese enterprise to break the dominant position of foreign enterprises in the field of high-end LED lighting.


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