What are the advantages of LED street lights applied to street lights

The LED wall lamp manufacturer with special light shape design is applied to street lamp lamps, which can offset the light-emitting point of view of lamps and improve the utilization rate of lighting beside the road; according to the rectangular aspect ratio, the aspect ratio can be 2:1 Light spot, so that there will be no dark shadows between adjacent spots, and a bright light band with uniform illuminance can be formed on the road, which is more in line with the current lighting design of traffic roads. It is not necessary to increase the height of the light pole. Satisfy the wide illuminating scale, and also improve the lighting efficiency of the lamps, reduce the lighting power density on the road, and then achieve the real energy saving and green environmental protection. The high-power LED street lamp is used as the road lighting. Compared with the traditional high pressure sodium lamp, it has unparalleled advantages : 1. The luminous mechanism is different, because LED street lamps are a kind of semiconductor equipment, and their useful life can reach 50,000 hours (that is, the light attenuation is less than 30% after 50,000 hours), which is much higher than sodium lamps and metal halide lamps (their Life span is about 12000-15000 hours). 2. Because the LED street light is made of semiconductor materials, there is no filament and other additional materials, so it has good shock resistance. 3. The color rendering index of LED street light source lighting can reach above 80, which is relatively close to natural light. In this case, human eyes can distinguish things more easily, which is beneficial to driving safety; while the color rendering index of high pressure sodium lamps is only 20-30. 4. Traditional gas discharge lamps such as high-pressure sodium lamps have a preheating process when starting up, which wastes energy and is not conducive to intelligent control; LED street lamps are essentially different in light sources, so there is no problem of 'starting time' , It can work normally immediately after power-on, and can easily complete intelligent energy-saving control. 5. Because traditional street light sources use the mechanism of mercury vapor to emit light, the disposal of waste light sources is now a problem that needs to be solved internationally. At the same time, the light-emitting mechanism of traditional light sources determines that it will declare ultraviolet rays that are harmful to humans. The LED street light source is solid-state lighting, there are no harmful substances such as mercury and other elements, and it will not declare ultraviolet rays, so it is an environmentally friendly light source. 6. In the optical system, the traditional street light source emits omnidirectional light, half of the light needs to be reflected by the reflector, and the reflector needs to absorb part of the light, so the light loss is relatively large. Because LED street lights emit light in one direction, the utilization rate of light is higher than that of traditional street lights. 7. The light distribution curve of the traditional street lamp is determined by the reflector, so it has certain limitations, while the LED street light source is a distributed light source that can be designed by each electric light source to make the light source of the lamp an ideal batwing shape , After reasonable control of light dispersion, the pavement spot is rectangular, and a high uniformity of illuminance is achieved within a useful illuminating scale. 8. More perfect active control (optional): Different brightness can be set according to the needs of different intervals, which will increase the effect of energy saving. For example, it is 200W when it is bright at 7 o'clock in the evening, and when there are few people at midnight, the brightness is automatically adjusted to 100W, during which it can save 60W of electricity. In the current TD lighting design, the lamp distance is generally 3 times the lamp height, and the lamp height is generally equal to the road width. According to the geometric triangle connection, it can be calculated that the light distribution point of the lighting fixture should be about 140 degrees in the C0/180 direction. , C90/270 direction is about 80 degrees. In the past one hundred years, the lighting source has experienced three important stages: incandescent lamp, fluorescent lamp, high intensity discharge lamp (HID), and now has broad development prospects in the lighting industry The LED street light source is called the fourth generation light source. As a new type of light source, LED street lights have long lifespan, high luminous efficiency, low power consumption, short starting time, high color rendering index, low operating temperature, strong structure, no fear of vibration, good directionality, low operating voltage, and no Distinguished features such as ultraviolet radiation and light weight, it is a new generation light source with the most development potential in the world. And the LED street light source can be produced without mercury, which is of great significance to environmental protection. Solid-state lighting lamps that use semiconductor LED street lamps as light sources will gradually replace traditional lighting lamps and enter various application fields. At present, lighting consumption accounts for about 20% of the entire electricity consumption, and greatly reducing lighting power consumption is an important way to save energy. LED street lights are attracting international attention with their solid advantages. The United States, Japan and other countries and Taiwan have predicted the benefits of LED street lighting. 55% of the incandescent and fluorescent lamps in the United States are replaced by LED street lights, which can save 35 billion US dollars in electricity bills and reduce 755 million tons of carbon dioxide emissions each year. Replacing 100% of Japanese incandescent lamps with LED street lamps can reduce the power generation of 1-2 nuclear power plants and save more than 1 billion liters of crude oil every year. In Taiwan, 25% of incandescent lamps and 100% of fluorescent lamps are replaced by LED street lamps, saving 11 billion kWh of electricity each year. LED street lights will also constitute a huge industrial shopping mall worth 50 billion US dollars. In recent years, internationally renowned lighting companies such as Philips, Osram, GE, etc. have successively launched LED street lamp semiconductor lighting solutions, established national key laboratories, and invested heavily in research and development.