LED street lights are the best choice for energy-saving renovation of current road lighting. So how should I buy LED street lights? What are the shopping points? Let"s briefly introduce the purchase instructions from the following 4 points.
1. Luminous efficiency
With the maturity of LED lighting technology, high-power LED light sources can meet the luminous flux required by ordinary street lamps. Generally speaking, the luminous flux of high-pressure sodium lamps is 100LM/W, and the commonly used high-power LEDs are 50-60LM/W. They are the best LED chips abroad and can reach 80LM/W. The higher the luminous efficiency, the better the energy saving effect. This is one of the more important indicators for choosing LED street lights. However, the standards for LEDs are not expressly stipulated, so you must check carefully when purchasing LED street lights.
2. Light attenuation
At present, some businesses use hundreds of 0.5W low-power LEDs in order to reduce costs and reduce the price of LED street lights. However, the light decay of this low-power LED is very serious, up to 80%, lasting only 1000 hours. Therefore, as a street light that needs to be used for a long time, such low-power LEDs are absolutely not allowed. If you choose high-power LEDs (usually above 30W), the attenuation of light will be much better.
3. Street light weight
Due to the high technical content and complex components of LED street lamps, the weight of some high-power lamps far exceeds that of ordinary high-pressure sodium, so the corresponding supporting materials are required to be higher. However, some LED street light companies have a tendency to minimize the self-weight of LED lights, from the original 30 kg of a single light to more than 10 kg.
4. Calorific value
Because the LED is a semiconductor device, the chip is affected by temperature and drops to 30% of the initial speed of light, which loses the meaning of lighting. That means life is over. In theory, the life of high-power LED street lights is 30,000-50,000 hours, but the important premise is good heat dissipation. It is worth noting that domestic LED street light companies have adopted the world"s best sewing cooling technology.