Abstract
In this article, the problems associated with the removal of heat from the LEDs are considered. Brief information about the materials included in the cooling system of LED lighting is presented. A comparison of materials such as copper, aluminum and alumo nitride ceramics, the use of which is possible in cooling systems of led lighting is conducted. Analyzing the current market relations that have a significant impact on the cost of metals, even in material terms, the use of a copper radiator does not look very expensive. Methods for calculating the heat removal are proposed, an example of the calculation is given. It was shown that at elevated operating temperatures, the lifetime of the LEDs is significantly reduced: at 105 °C, the lifetime of the LEDs is 200 thousand hours less than at 85 ° C. The maximum area of the plate on which the LED is installed, for its effective cooling, is about 24 cm2 for a 1 W LED power.
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More From: IOP Conference Series: Materials Science and Engineering
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