Shopping points of led street lights
Luminous efficiency
Technology is becoming more and more mature, and high-power LED light sources can meet the needs of general street lights. The luminous efficiency of the general high-pressure sodium lamp is 100LM/W, and the commonly used high-power LED is 50-60LM/W. It can reach 80LM/W with foreign LED chips. The higher the luminous efficiency, the better the energy-saving effect. This is also the choice One of the most important indicators of LED street lights. However, there is no clear stipulation in the LED standard, so you must carefully confirm when purchasing LED street lights.
Light decay
And some businesses, in order to reduce costs, use hundreds of low-power LEDs of 0.5W. However, the light decay of this low-power LED is very serious, and its light decay to 80% has a life span of only 1000 hours. Therefore, as a street lamp that needs to be used for a long time, it is absolutely not allowed to use such low-power LEDs. If you choose high-power LEDs (generally more than 30W), the light decay will be much better.
Self-respect
Due to the high technical content and complex composition of LED street lamps, the weight of some high-power lamp holders will far exceed that of ordinary high-pressure sodium lamps, so the corresponding support materials are 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.
Heat dissipation
Because LED is a semiconductor component, when its chip is affected by temperature and reduces to 30% of the initial luminous flux, it will lose its illumination meaning, that is, the end of life. In theory, the life of high-power LED street lights is 30,000 to 50,000 hours, but The important premise is good heat dissipation. It is worth mentioning that domestic manufacturers have adopted the world's leading needle-shaped heat dissipation technology.
