Led Public lighting(CLASSIC) technology is becoming more and more mature, and high-power LED light sources can meet the luminous flux of general street lamps as needed. The commonly used high-power LEDs are 80 to 120 lm / W. The best-LED chips and lenses can reach 180 lm / W. The luminous efficiency is higher and the energy-saving effect is better. This is one of the most important indicators for selecting LEDs. However, LEDs is not clearly defined in the standard, so the purchase of LED public lighting must be carefully confirmed.
In order to reduce costs, some merchants now use hundreds of low-power LEDs of 0.5 watts. However, the light decay of this low-power LED is very serious, and its light decay and 80% lifetime is only 1000 hours. Due to the long-term use, LED street lights are absolutely not allowed to use such low-power LEDs, high-power LEDs (generally more than 30 watts), the light fade will be much better.
Due to the high technical content and complex composition of LED public lighting, some high-power lamp holders weigh far more than ordinary high-pressure sodium lamps, so the support for the corresponding materials is relatively high. However, some LED street lamp manufacturers have reduced the weight of the LED lamp holder as much as possible. From the original single lamp holder, about 10 kg, the drop is more than 50 kg, and the weight loss trend is further declining.
LEDs are used in semiconductor components. The temperature of the wafer is reduced and reduced to 30% of the initial luminous flux. It will lose the meaning of illumination or put an end to life. The life of high-power LED public illumination is theoretically 3-50000 hours, but only if there is good Heat resistance. It is worth mentioning that the world has adopted the world's leading manufacturer of needle cooling technology.
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