With the national emphasis on energy conservation and emission reduction and the urgency of energy-saving transformation, Guangdong Province will also vigorously promote LED street lamps, while the LED street lamp scheme promoted by Guangdong Province is widely questioned. The reason is that LED street lamp products have many problems, such as light failure, heat dissipation, lighting capacity, etc.

Problems of domestic LED street lamps:

Insufficient energy saving illumination

LED street lamp has a unique secondary optical design, which can illuminate the light of LED street lamp to the required lighting area, further improving the lighting efficiency, so as to achieve the purpose of energy conservation.

Energy saving refers to the electric energy saved under the same average illuminance. This average illuminance cannot be just the average ground illuminance! The light intensity of the space has a good advance judgment for vehicles coming from afar to prevent traffic accidents! But at present, LED street lamps installed in China sacrifice illumination to achieve energy conservation.

Heat dissipation problem

Street lamps are used outdoors, so they must be waterproof and dust-proof, so the lamps must be sealed. After sealing, the temperature of water vapor in the lamps will exceed 100 ° C in extreme weather conditions, and the lamps will work continuously in an environment with L temperature. If the heat dissipation of LED street lamps is not well done, the lamps will be very easy to break down or have serious light failure. In 2014, the heat dissipation and waterproof problems of domestic high-power LED street lamps were solved by using Puwei respirator to reduce the subsequent maintenance cost of products.

Penetrability

In rainy and foggy days, LED light is not able to penetrate fog.

Easy to attract mosquitoes

Mosquitoes like some wavelengths of LED light very much, so moths fight against fire, which will affect its light efficiency.

To sum up: As a new light source, LED has irreplaceable advantages in replacing incandescent lamps and fluorescent lamps, but there are still some problems in the use of high-power LED street lamps. The promotion of radical and comprehensive replacement of LED street lights (especially on main roads) may cause sequelae. In case of extreme weather, a large number of bad lights or severe light failure may occur, affecting road safety.

The author believes that LED street lamps should not be used as urban trunk road lighting, but can be used as auxiliary road or secondary trunk road lighting. Small scale use on non trunk roads not only supports the led industry, but also accumulates experience for the future. We are afraid that the development of the Great Leap Forward will harm the public interest.