The advantages of LED street lights
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Author : Shenzhen Crown Lighting
Update time : 2021-07-21 17:46:58
Do you know the advantages of LED street lights?
The LED street lamp with a special light shape design is applied to the street lamp luminaire, which can offset the luminous angle of the luminaire and improve the utilization rate of roadside lighting. According to the rectangular aspect ratio, it can produce an aspect ratio of 2:1 Light spots, so that there will be no shadows between adjacent light spots, and a bright light band with uniform illuminance can be formed on the road surface, which is more in line with the current lighting design of traffic roads. It is sufficient to meet the requirements without increasing the height of the light pole. Wide irradiation range, but also improve the lighting efficiency of the lamps and reduce the lighting power density of the road, so as to truly achieve energy saving and green environmental protection. High-power LED street lamps used for road lighting are incomparable compared with traditional high-pressure sodium lamps. The advantages:
1. The light-emitting mechanism is different. Because street and safety light fixtures are a kind of semiconductor device, their effective 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 is about In 12000-15000 hours).
2. Outdoor lighting engineering manufacturers talk about the fact that the LED street-lighting project is a semiconductor material, without filament and other additional materials, so it has good shock resistance.
3. The color rendering index of outdoor lighting engineering manufacturers' LED street lighting source lighting lamps can reach above 80, which is relatively close to natural light. In this case, the human eye can distinguish things more easily, which is beneficial to driving safety; and the color rendering index of high pressure sodium lamps Only 20-30.
4. Traditional gas discharge lamps such as high-pressure sodium lamps have a preheating process when starting, which wastes energy and is not conducive to intelligent control. LED street lamps are essentially different in light sources, so there is no "start-up time" problem , It can work normally immediately after power-on, and can realize intelligent energy-saving control very conveniently.
5. Since traditional street light sources use the mercury vapor mechanism to emit light, the disposal of waste light sources is also an urgent problem to be solved in the world. At the same time, the light-emitting mechanism of traditional light sources determines that it emits ultraviolet rays that are harmful to the human body. The LED street light source is solid-state lighting, without harmful substances such as mercury and other elements, and it does not emit ultraviolet rays. Therefore, 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. Since led street light lamps emit light in one direction, the utilization rate of light is higher than that of traditional street lights.
7. The light distribution curve of traditional street lamps is determined by the reflector, so it has limitations, while the LED light street source is a distributed light source. The design of each electric light source can make the light source of the lamp an ideal batwing shape. By reasonably controlling the light distribution, the road surface spot is rectangular, and within the effective irradiation range, a higher uniformity of illuminance can be obtained.
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