LED street lamps accord with the general direction of "energy conservation and emission reduction", and become the highlight of local governments. The ministry of science and technology has launched a demonstration project of "ten cities and ten thousand" LED lighting, and guangdong province has put forward the plan of "thousands of millions". The electronic component technology network understands that, while local governments support the LED street lighting project, the quality of the high-power LED power supply will not pass as the short board that hinders the development of high-power LED lighting.
Indoor lighting and outdoor lighting conditions are very different, and the technical difficulty is different. Power requirements for outdoor lighting:
1. The power is large, the efficiency is high, and there are the whole lighting efficiency requirements of every watt lumen, and the whole lighting effect of the street lamp is required to reach above 68lm/W.
2. The efficiency of the power supply is directly related to the luminous efficiency of the lamp, and the efficiency of the power supply is high, and the whole lighting efficiency requirement is possible.
3. LED power supply for LED street lamps and tunnel lamps, the power is generally 100W, 150W, 200W and 300W, accounting for 8% to 10% of the cost of the whole lamp.
4. The greater the power of LED power source, the more difficult it is to design and manufacture.
LED street light, tunnel light, such as high-power LED lighting to promote early, LED driver power supply has many problems, mainly is not according to the LED street light, tunnel lamp bad environment to design, the working temperature range narrow, only to 40 ℃, 70 ℃; Low waterproof level; Low level of lightning protection; Low efficiency, not long enough, only 20,000 hours, 10,000 hours.
"The industry consensus is that LED drivers are not stable, and it has been a drag on the LED lighting industry for one to two years," said gu yongde, chairman of the company. Poor reliability led to the installation of street lamps today, and the power supply was broken in a few days. Street lamps, tunnel lights and other outdoor high equipment, installation is difficult, maintenance is more difficult. For street lamp manufacturers, the unstable power supply makes maintenance cost more than the purchase price of the product itself....
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