Guangdong province quality technology supervision bureau released in August 2012 in guangzhou, shenzhen, zhuhai, foshan, zhongshan, huizhou, dongguan and other seven cities of 21 enterprises produced a total of 23 batches from ballast LED lights product spot-check results, unqualified 17 batches, fraction defective is as high as 73.9%. The relevant person in charge of the agency to make a analysis on test results pointed out: “the lack of unified product quality evaluation standard and product manufacturing, product application effect, the unity of the product safety specification, the quality of LED lighting products have different fire, severely restricts the marketing application.”
According to understand, to make the LED lighting products to achieve real live longer, there are many problems need to be solved.
LED lamps and lanterns, heat dissipation is good or bad is directly related to the quality of the product and life, “the current LED light bead in the glowing only 15% – 15% of the electricity converted into visible light, the remaining 75% – 85% of the electrical energy is transformed into heat. High temperature will lead to the LED luminous efficiency attenuation, waste heat produced by LED running out if not effective, can cause fatal influence directly the life.” (real estate) in xiamen university physics and mechanical and electrical engineering college professor be said, according to the relevant authorities, the average life span for the LED lighting products depends on temperature, working temperature 10 ℃, the life will shorten the half. Cooling technology for LED lighting products have now there are many ways, such as improve the LED chip paste process, increase the cooling board or heat sink, wind, heat pipe, etc., but at the moment, these technologies all have their own defects, and the cost is very high.