The contrast of traditional street lamps and LED street light

LED street lamp is a semiconductor diode, its life is very long.When the flux decay to 80%, its life up to 50000 hours.And the life of the metal halide lamp only 6000 ~ 12000 hours, high pressure sodium lamp life is 12000 hours. 
 
LED street light, the basic structure is an electroluminescent semiconductor materials, placed on a wire rack, then sealed with epoxy resin around, protect the internal core, so the LED street lamp of seismic performance is good.
 
Light color of white LED street lamp is better than high pressure sodium lamp.In the middle level of the visual, the human eye in high color temperature environment than low color temperature environment are easy to identify things.Color rendering of white LED is much better than high pressure sodium lamp, high-pressure sodium lamp color rendering index only 20 , white LED street light more than 80.
 LED street lamp used in highway
LED street lamp can realize dimming function more perfect.As a result of the LED lights work scope is larger, the light output and working current is proportional to the, so can reduce the current to adjust the light. In addition, due to the frequent switch carried out for the LED street lamp without too much damage, dimming can also adopt the method of pulse width adjustment to get to work by adjusting the duty ratio of voltage and frequency, and effectively adjust the luminous intensity of LED street light.
 
In the optical system of lamps and lanterns, the LED street lamp luminous flux loss is different from the traditional light source, LED street lamp is half space illuminated light source.HPS or MH is illuminated light source, whole space needs to be one and a half space of emergent light change direction to the other half space.When we rely on the reflector to complete, reflector to absorb the light and the light source itself against light is inevitable.And use the LED as light source, no losses in this regard, the utilization rate of light is higher than the traditional light source.Finally, the LED street light do not contain harmful metallic mercury, unlike HPS or MH scrapped will cause harm to the environment.

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