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What are the advantages of LED street lights?

Update:23 Mar 2018
Summary:

LED light source adopts low-voltage DC power supply, hi […]

LED light source adopts low-voltage DC power supply, high-efficiency white light synthesized by blue LED and yellow, and has the unique advantages of high efficiency, safety, energy saving, environmental protection, long life, fast response, high color rendering index, and can be widely applied to roads.

The cover can be used to produce high temperature resistance of 135 degrees and low temperature resistance of -45 degrees.

LED light source advantages:

1, its own characteristics - the unidirectional light, no light diffusion, ensuring light efficiency.

2. The LED street light has a unique secondary optical design that illuminates the LED street light to the desired lighting area, further improving the light efficiency to achieve the purpose of energy saving.

3, LED has reached 110-130lm / W, but there is still much room for development, the theoretical value of 360lm / W. The high-pressure sodium lamp's luminous efficiency is only increased with the increase of power. Therefore, the overall luminous efficacy of LED street lamp is stronger than that of high-pressure sodium lamp. (The overall luminous efficiency is theoretical, in fact, the efficacy of high pressure sodium lamp above 250W is higher than that of LED lamp. ).

4, LED street light color rendering is much higher than high pressure sodium lamp, high pressure sodium lamp color rendering index is only about 23, while the LED street lamp color rendering index of 75 or more, from the perspective of visual psychology, to achieve the same brightness, LED street light can average the light More than 20% lower than high pressure sodium lamp.

5, light decline is small, the annual light decline is less than 3%, use of 10 years still meets the road requirements, and high pressure sodium light declines, a year or so has dropped more than 30%, so, LED street lamp in the use of power design Can be lower than high pressure sodium lamps.

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