Consider buying high-quality LED street lights from the following points
1. Luminous efficiency of LED street lights LED lighting technology has become more and more mature, and high-power LED light sources can already meet the needs of general street lights.
The luminous efficiency of general high-pressure sodium lamps is 100LM/W, and the commonly used high-power LEDs are 50-60LM/W. Foreign LED chips can reach 80LM/W. The higher the luminous efficiency, the better the energy-saving effect. Choosing one of the very important indicators for led street lights. However, there is no clear stipulation in the LED standard, so you must carefully confirm when buying LED street lights.
2. The light attenuation of LEDs In order to reduce costs, some LED street light manufacturers and companies use hundreds of 0.5W low-power LEDs. However, the light attenuation of this low-power LED is very serious, and the life span of light attenuation to 80% is only 1000 hours. Therefore, as a street lamp that needs to be used for a long time, such low-power LEDs are not allowed, and high-power LEDs (generally more than 30W) are used, and the light decay is much better.
3. The weight of LED street lamp heads. Due to the high technical content and complex composition of LED street lamps, the weight of some high-power LED street lamps will far exceed the weight of ordinary high-pressure sodium lamps, so the corresponding supporting materials are also higher. However, some LED street lamp manufacturers have tried their best to reduce the self-weight of the LED lamp holder, from about 30 kg per lamp holder to more than 10 kg, and the weight reduction has a further downward trend.
4. The heat dissipation of LED street lights. Because LED is a semiconductor component, when its chip is affected by temperature and is reduced to 30% of the initial luminous flux, it will lose its lighting meaning, that is, the end of life.
In theory, the service life of high-power LED street lights is 30,000 to 50,000 hours, but the important prerequisite is good heat dissipation. It is worth mentioning that domestic manufacturers have adopted the world's superior needle-shaped heat dissipation technology.