Advantages of LED road lamps compared with traditional high pressure sodium lamps

Advantages of LED road lamps compared with traditional high pressure sodium lamps 2020.12.28 The application of LED street lamps with special light shape design on street lamps can shift the lighting angle of the lamps and improve the utilization rate of roadside lighting; according to the aspect ratio of the rectangle, it can produce a 2:1 aspect ratio Light spots, so that there will be no shadows between adjacent light spots, and a bright and uniform light strip can be formed on the road surface, so it is more in line with the current lighting design of traffic roads, and it can meet sufficient lighting requirements without raising the height of the light pole. Wide irradiation range, but also improve the lighting efficiency of lamps and lanterns, reduce the lighting power density of the road, so as to truly achieve energy saving and green environmental protection. Use high-power LED street lights for road lighting. The following is to share with you the LED landscape street lights and traditional high-voltage street lights. Compared with sodium lamps, it has incomparable advantages: 1. The light-emitting mechanism is different. Since the LED street lamp is a semiconductor device, its effective life can reach 50,000 hours (that is, after 50,000 hours, the light decay is less than 30%), which is much higher than that of sodium lamps and metal halide lamps (their lifespan is about at 12000-15000 hours). 2. Since the LED street light is a semiconductor material, without filament and other additional materials, it has good shock resistance. 3. The color rendering index of LED street light source lighting can reach more than 80, which is relatively close to natural light. In this case, it is easier for the human eye to distinguish things, which is conducive 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 they start, which wastes energy and is not conducive to intelligent control; LED street lamps and street lamps do not have the problem of "start-up time" due to the essential difference in light sources , It can work normally immediately after power-on, and can realize intelligent energy-saving control very conveniently. 5. Since the traditional street light source uses the mechanism of mercury vapor to emit light, the disposal of waste light source is also an urgent problem in the world. At the same time, the light-emitting mechanism of the traditional light source determines that it will emit harmful ultraviolet rays. The LED street light source is solid-state lighting, which does not contain harmful substances such as mercury and other elements, and does not emit ultraviolet light. Therefore, it is an environmentally friendly light source.

6. In the optical system, the traditional street light source is omnidirectional, 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 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 traditional street lights is determined by the reflector, so it has certain limitations, while the LED street light source is a distributed light source, and the light source of the lamp can be designed in an ideal batwing shape through the design of each electric light source , by reasonably controlling the distribution of light, the road surface spot is rectangular, and within the effective irradiation range, a higher illuminance uniformity is obtained.

8. More complete automatic control (optional): Different brightness can be set according to the needs of different time periods to further improve the energy-saving effect. For example, when it is on at 7 o'clock in the evening, it is 200W, and at 12 o'clock in the middle of the night when there are few people, the brightness is automatically adjusted to 100W, which can also save 60W of power.