LED technology has become more and more sophisticated, with higher and higher levels of intelligence and standardization, and more and more applications. LED street lights have been promoted because of their obvious energy-saving effect, but they have been stopped in practical use because of poor lighting quality. At the "7th China Road Lighting Forum" held at the Chongqing International Convention and Exhibition Center, LED road lighting product applications and trends are still the focus of the General Assembly.
After decades of development, LED has developed 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, thus making it possible for LED applications in urban street lighting. Compared with traditional street lamps, LED street lamps have become the target of “Ten City Ten Thousands†pilot project promotion in 2009 due to their advantages of energy saving and environmental protection. However, as an emerging industry, the longevity and light failure of LED high-power lighting products have become the focus of debate in the industry.
In response to this problem, Wu Chunhai, director of the Technical Department of Shenzhen Lighting Environment Management Center, brought statistics on 63 LED street lamps and 27 companies in Shenzhen. From March 18th, 2009 to March 5th, 2011, the number of lights turned off was 17 in total, which accounted for 27.0% of the total number of lighting fixtures participated in the daily normal lighting, involving 11 companies, accounting for participating companies. 40.7%. Director Wu Chunhai concluded that the evaluation of the life of LED lights should go to the field test, and the evaluation of LED light failure should be tested in the laboratory; at the same time, the overall stability of LED lights has a gap compared to the traditional street lights, not many good LED lights, and good enterprises. Hard to find, poor LED street light, good is also very good.
Director Wu Chunhai also appealed that lighting quality and energy-saving effect are the two wings of the LED street lights taking off. They are indispensable, and a balance must be struck between them. Only better lighting effects of LED street lights can gain support and promote large-scale applications.
Zhang Haijun, director of the Shanghai Lighting Association, also affirmed the development trend of LED, pointed out that there is now a very high lumen LED lighting products, and after years of practice, LED lighting products from immature to gradually mature, but the LED road Lighting products are still not mature.
In the analysis of advantages of LED road lighting products, Professor Lin Yandan of the Department of Light Sources and Lighting Engineering at Fudan University stated that compared with high-pressure sodium lamps, LED lights have the greatest advantage in terms of control function rather than energy saving. Intelligent street lighting is the biggest advantage in the future, and the biggest energy saving is easy to control. However, from the trend to large-scale application, it is necessary to 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 the specialization of labor division. Dr. Liu Jianping, senior director of OSRAM product market, proposed that the LED lamp production must be modularized and the modularization needs to be standardized. Do not develop without modularity, and do not develop without universal use.
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