LED street lights are becoming more and more popular and concerned. This LED street light is the protagonist of the lighting era and has aroused opinions from all sides. Some people will say that LED street lights are very good and are "energy-saving assistants". At the same time, some people say that LED street lights are polluting. Prime culprit? Is it really like this? The life of semiconductor devices used in LED street lights is 50,000 hours, and the electricity used for lighting in our country reaches 250 billion degrees. The energy crisis has intensified, and lighting electricity accounts for 20%. Energy saving is imperative. It is a trend that LED street lights replace traditional high-pressure sodium lights. LED lamps generally use precise light distribution, where there is light where it is needed, and there is no light when it is not needed. Therefore, the light of the general LED street lamp is irradiated on the road, while the traditional light source sodium lamp is scattered around, and the wasted light will then become light pollution. At present, urban lighting lamps have a large amount of sodium yellow light. This kind of light has strong penetrating power, coupled with the flashing commercial neon lights and the strong light of crane towers in the city, forming the city's night light pollution. The impact of this on astronomical observations is basically devastating, so it is difficult for us to see a clean starry sky. In general, the use of high-quality LED lighting can reduce the light pollution in the city at night to a certain extent. If 55% of the traditional LED lights in the United States are converted into LED lights, it can save 35 billion U.S. dollars each year, and all incandescent lights in Japan can be converted into LED lights, which can reduce the power generation of 1 to 2 nuclear power stations. The single premise is that the life of the LED lamp is really long enough. Nowadays, in the situation of travel in the LED industry, when it is promoted to the market, the life of LED street lights is 50,000 hours, but in fact, many LED street lights are damaged before the life of the whole lamp reaches the tone. Some LED street lights are guaranteed for five years, the quality is reliable, and the energy-saving effect is guaranteed, but the price of the corresponding LED street lights is slightly higher than the market price. There is no doubt that LED street lights will replace traditional street lights. In addition, as the pace of replacing LED street lights in cities around the country accelerates, high-pressure sodium lamps, the culprit responsible for night light pollution, will be replaced in large numbers. In addition, the government's planning and management of night lighting in cities will become increasingly standardized. It is believed that the phenomenon of night light pollution in cities will be in the future. Significant improvement.