1) the heat of the lighting system
Commonly known as LED cold light source, led lights for street lights principle is issued a photon, electron after composite without the need for the hot process. However, due to the presence of Joule heat, the LED is illuminated at the same time accompanied by heat, but also for the occasions of high-power LED applications, the calories add up and cannot be underestimated, the led lights for street lights are different from the traditional incandescent, fluorescent and other lighting light source, the high temperature will shorten, or even termination of their service life.
2) to improve the color rendering
White LED widespread use of blue led lights for street lights superimposed excited by blue light, yellow light yttrium aluminum garnet (YAG) phosphor, the synthesis of white light. Because of its luminescence spectrum contains only blue, yellow, two spectrum, so there is a high color temperature, and low color rendering index, does not meet the general lighting requirements.
3) design of the lighting system of the second optical
Traditional lighting with incandescent, fluorescent light for a long time for a reference to determine the standard of optical and shape of the lamp, LED lighting system should be considered to get rid of the traditional lamp with led high bay module assembly, fully consider the optical properties for the The led lights for street lights source designed different lighting. The optical system design include the following several aspects: to determine the optical system according to the needs of lighting objects, luminous flux, the shape, the number of LED and the size of the power;