Recently, Foshan Chancheng District has completed the pilot zone of LED energy-saving street lamps and lighting projects in Guangdong Province, and has completed Lakeview Road, Lvjing Road, Heyuan Road, Rainbow Road, Foshan Avenue Zhangye Tunnel, Wenhua Road and Tongji East. , Lujiang South Road, Lingnan Avenue (short light), Shenning Road, Wufeng 4 Road, Dongping Road, Weiguo Road and other sections of the street light conversion work. However, the nearby citizens are not satisfied with the LED street lights. Some citizens have reported that after installing the LED street lights, the roads are obviously darkened and there are great security risks.
Regarding the questions raised by the public, the Chancheng District Public Utilities Bureau responded that the white light emitted by the LED is close to the sun, the color rendering index is high, and the lighting effect is better than that of the high-pressure sodium lamp. According to netizens, “white light is too pale and ugly cityâ€, he believes that this is only because the citizens are accustomed to the yellow light of high-pressure sodium lamps.
White light is a kind of composite light, generally composed of two-wavelength light or three-wavelength light. At present, there are three main ways for LEDs to achieve white light: one is to synthesize white light through a combination of red, green and blue multi-chips; the other is to use blue LED chips to excite yellow phosphors, which are synthesized by LED blue light and yellow-green light emitted by phosphors. White light, in order to improve the color rendering characteristics, an appropriate amount of red and green phosphors can be added; the third is to use ultraviolet light LED (UVLED) to excite three primary color phosphors to synthesize white light. For a long time, China's urban street lamps are mainly high-pressure sodium lamps. The public has generally adapted to the yellow street lamps. It takes a certain amount of time to accept white LED street lamps.
The National Development and Reform Commission and other six ministries and commissions recently issued the "Semiconductor Lighting Energy-Saving Industry Development Opinions" pointed out that in the future, the focus will be on the development and promotion of LED lighting products in special areas such as general indoor lighting, parking tunnels, roads, automotive lighting, and medical and agricultural fields. Improve the relevant service system.
In 2009, the state vigorously promoted the “Ten Cities and Ten Thousand Miles†construction project, and plans to promote more than 300,000 LED municipal lighting fixtures in 10-20 cities by 2010. This move plays an important role in energy conservation and environmental protection, stimulating domestic demand, and developing the local economy. However, in the current situation, the popularity of LED localization still has considerable difficulties.
First of all, the current price of LED lighting products is still high, although the products have energy-saving features in the long run, but most consumers and business users still take a wait-and-see attitude. LED lighting products are mainly used in high-end applications such as high-end office lighting, automotive lighting, and government procurement. The development trend of civilians is slow.
Secondly, the main patents for upstream and downstream products of LED lighting are still in the hands of leading foreign companies. The local enterprises are backward in technology and the quality of products is uneven. The domestic market is mainly in the hands of foreign brands such as Osram and Philips. These large-scale local enterprises have built a “patent encirclementâ€, which makes the development of local LED enterprises quite slow.
Although the domestic LED market prospects are gratifying, the local development is still difficult. The acceptance of the public, the price and the technical factors are all blocking the high walls in front of LED manufacturers. The development of LED in China still needs the government's strong support and the media's continuous publicity. Both of them, together with the company's own self-improvement and innovation, believe that China's LED industry will soon enter the peak of the world.
Power X (Qingdao) Energy Technology Co., Ltd. , https://www.solarpowerxx.com