There is no tungsten wire, no light-emitting devices such as lamps, as long as a special chip can convert electrical energy into light energy. As a new lighting technology, LED is widely used for its energy saving, environmental protection, long life and fast startup. I am optimistic. However, behind the scenery is loneliness. At present, more than 90% of the LED products of Jiangsu enterprises are exported to foreign countries. In Nanjing, only the exemplary road tunnels use LED street lights.
High cost into LED promotion bottleneck
When will LEDs go out of loneliness? In the field of LED technology development and application of the 2009 Nanjing Science and Technology Association Annual Meeting held yesterday, industry experts pointed out that with the continuous advancement of technology, LED will eventually come out of the strange circle.
If the street lamp uses LEDs, it will save more than 100 million yuan a year.
On the afternoon of the 24th, the author saw in the Model Road Tunnel that there were countless mung bean-sized lamp beads embedded on both sides of the tunnel, which were neat and beautiful, and the light changes with the intensity of the outside sunlight. The brightness of the LED near the vent is relatively high. Lower. The entire tunnel is evenly lit.
The tunnel uses the intelligent LED products developed by Nanjing Handerson Technology Co., Ltd. Yang Haifeng, the company's executive vice president, told the author that these lamps have been used in tunnels for a whole year, and more than 50,000 LED lamps of more than 900 lamps have not been damaged, which is more than 50% more than the currently used high-pressure sodium lamps. At present, the company is also building a “wind and light complementary†demonstration road in Lianchi Lake, Liuhe. 100-inch LED street lights can be lit at night and blow up at night.
According to reports, LED lamps have a lifespan of 60,000 to 100,000 hours. Xu Chengyuan, deputy secretary-general of the Provincial Institute of Electronics, calculated an account. There are more than 160,000 high-pressure sodium lamps in the urban area of ​​Nanjing. If the electricity consumption per street lamp is 0.5 degrees per hour, the electricity consumption of street lighting in the city is about 320 million degrees. If all LED street lights are replaced, at least 160 million kWh of electricity can be saved and more than 50 million tons of coal can be saved.
The cost is high and the bottleneck is to achieve the same brightness. The LED lamp is at least 85% more energy-efficient than the incandescent lamp and has a service life of 40 times. Compared with the fluorescent lamp, the LED lamp saves 50% and has a service life of 10 times. The promotion and application of LED can not be satisfactory.
A LED product promotion conference held in Shanxi Road Square recently showed a variety of LED lamps, flashlights, desk lamps and light bulbs. More than 1,000 citizens received the science brochure on the same day, but eventually sold only a small number of LED flashlights and one LED bulb. Some citizens said that a LED table lamp of 300 yuan is five or six times that of a common table lamp, and the money for energy conservation is recovered. "I don't know the Year of the Monkey"!
Yang Haifeng said frankly: "Because the high-performance chips used by LEDs are imported from abroad, an LED lamp is at least 20 yuan, and an ordinary light bulb is only 1 yuan." "If LEDs want to truly expand the market and reduce costs, they must start with technology." According to Xu Chengyuan, Jiangsu LED has formed a complete industrial chain, and many companies are conducting technological breakthroughs and have made some technological breakthroughs. How to effectively integrate the strengths of enterprises, universities and research institutes and concentrate on the joint technical research on core technologies is an urgent problem to be solved in the LED industry.
Nanjing will select high-quality products through experiments. “Some production companies claim that their products have a life expectancy of 50,000 hours and 100,000 hours, but we can’t grasp the quality of the products.†The person in charge of the city street lamp management office said that Nanjing The city has successively built an experimental road in Hexi Taishan Road and Xianlin Jiuxianghe area, selected brand products produced by 10 large-scale enterprises to carry out PK. After obtaining reliable data through specific experiments, the final selection of brand quality will be hard. Product promotion.
It is reported that the National Development and Reform Commission, the Ministry of Science and Technology and other six departments recently announced the "Semiconductor Lighting Energy-Saving Industry Development Opinions", requiring that the functional lighting of LED products reach 20% by 2015. Xu Chengyuan suggested: "Jiangsu and Nanjing can take the first step and require major infrastructure construction projects and public utilities projects to use LED lighting products to reach a certain proportion, and open LED lighting products."
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