The original high lamp are mostly high pressure sodium lamp and the traditional energy-saving lamps, today, the national energy conservation and emission reduction policy, LED light, they have absolute advantages, and gradually replaced the high-pressure sodium lamp and the traditional energy-saving lamps. Advantages are the following:
1, good color rendering, light enough. LED light source output white light, moderate, color temperature of 5000 k to 6000 k, compared with high pressure sodium lamp, the light color is more natural, colour rendering is much better than high pressure sodium lamp, high-pressure sodium lamp's color rendering index is only about 20, the white LED can reach 65 ~ 80. LED high color rendering help drivers and pedestrians to identify the target, under the same surface brightness to provide better traffic conditions.
2, light source direction is good. Unlike traditional light source, LED is a directional light, LED light source is composed of very multiple leds, through the design of each LED projection direction, illuminated the road surface to obtain uniform illumination, light utilization efficiency is much higher than traditional light.
3, environmental protection and energy saving. There is no lack of domestic highway tunnel in the original design using high pressure sodium lamp, and then after the reform of the road lighting switch to LED, brightness than the brighter before modification, and electricity is less than before. Compared with the electricity before modification, and can save more than 50%.
4, long service life. LED is a semiconductor, in the case of heat dissipation is good, when the flux decay to 80%, the life of 50000 hours. About 12000 hours and the life of the metal halide lamp, high-pressure sodium lamp life 20000 hours. LED light, lighting the booth is an important basic maintenance free for 10 years, the long life of LED lighting. LED long life can effectively reduce the maintenance work of lamps and lanterns, reduce running cost.