Technology is maturing, high-power LED light source can meet the general needs of street lamps. The general high-pressure sodium lamp light efficiency is 100lm W, commonly used high-power LED is 50-60lm, with the best foreign led chip can reach INTLM W, luminous efficiency is higher, means the energy-saving effect is better, this is the choice LED street lamp One of the most important indicators. However, the LED standard does not have a clear provision for this, so in the procurement of LED lights must be carefully confirmed.
And some businesses, in order to reduce costs, the use of hundreds of 0.5W small power led. However, the light attenuation of this small power LED is very serious, its light decay to 80% of life is only 1000 hours. Therefore, as the need for long-term use of the street lamp is absolutely not allowed to use this small power led, the selection of high-power led (generally refers to more than 30W), its light decline will be much better.
LED street lamps due to high technical content, complex components and other reasons, some high-power lamp holder weight will be far more than the common high-pressure sodium lamp, so the corresponding supporting material requirements are higher. However, some LED street lamp manufacturers have been as far as possible in reducing the weight of the LED lamp holder, from the original single lamp holder about 30 kg, to more than more than 10 kilograms, the weight of the reduction there is a further decline in the trend.
LED because is the semiconductor component, its chip is affected by the temperature and reduce to the initial luminous flux of 30%, will lose the lighting meaning, that is, the life end, theoretically high-power LED street lamp life in 350,000 hours, but its important premise is good thermal dissipation. It is worth mentioning that the domestic manufacturers have adopted the world's leading needle-like cooling technology.