After several decades of development, LED has evolved from the initial red-yellow light to the current high-brightness white light. The laboratory record of light efficiency has exceeded 160lm/W, and the industrialization level has exceeded 100lm/W. High-power white LED The application of lighting products in the field of general lighting continues to make new breakthroughs, making LED applications in urban street lighting possible. Compared with traditional street lamps, LED street lamps have become the target of the “Ten Cities and Ten Thousand Miles†pilot project in 2009 due to their advantages of energy saving and environmental protection. However, as an emerging industry, the life and light decay of LED high-power lighting products has become the focus of debate in the industry.
In response to this problem, Wu Chunhai, director of the technical department of the Shenzhen Lighting Environmental Management Center, brought statistics on 63 LED Street Lights and 27 enterprises in Shenzhen. From March 18, 2009 to March 5, 2011, in the case of normal switching lights every day, the total number of lights off was 17ç›, accounting for 27.0% of the total number of participating lamps , involving 11 enterprises, accounting for participating enterprises. 40.7%. Director Wu Chunhai concluded that the evaluation of LED street lamp life should go to the field test, evaluation of LED road light fade should be tested in the laboratory; at the same time, the overall stability of Led Street Lights is different from traditional street lights, there are not many good LED street lights, Good companies are harder to find, LED street lights are poor, and good is good.
Zhang Haijun, chairman of the Shanghai Lighting Society, also affirmed the development trend of LED, pointing out that there are already very high-energy LED lighting products, and after years of practice, LED lighting products have matured from maturity to maturity, but LED roads Lighting products are still not mature enough.
In the analysis of the advantages of LED road lighting products, Lin Yandan, a professor of light source and lighting engineering at Fudan University, said that compared with high-pressure sodium lamps, the biggest function of LED street lamps is not energy saving, but a greater advantage in control functions. Street lighting intelligence is the biggest advantage in the future, and the biggest energy saving is easy control. However, from the trend to the large-scale application, we must consider the issues of cost and reliability. These problems are solved and the future is broader.
With the development of the LED industry, the LED street lamp industry will move toward a specialized division of labor. Dr. Liu Jianping, senior director of Osram's product market, proposed that LED lamps should be modularized and modularized. No modularity does not develop, not universal and does not develop.
LED technology is becoming more and more mature, with more and more intelligent and standardized methods, and more and more applications. LED street lights have been promoted due to the obvious energy-saving effect, but they are discontinued due to poor lighting quality. Director Wu Chunhai appealed that the quality of lighting and the effect of energy saving are the two wings of the LED streetlights, which are indispensable and must be balanced between the two. LED street lights can only be supported by better lighting effects and promote scale applications.
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