led the following strengths or unique local governments as a primary: flash, high efficiency, low lamp reflector loss, throttling energy 70%; with Arabic numerals to limit the brightness function, more energy efficient; without high pressure, high security; with the software can be supply ultra-high brightness and high color rendering lighting in the special environment of remote automatic remote control brightness; turmoil, fog, rain, etc.; easy installation and maintenance; plate installation, no extra wiring; no light destruction or waste; long life, a symbol of the do not need to frequently carry out the change, thereby reducing the potential for intermittent traffic, reduced to pay the maintenance costs. Some people care about, to accept the led lights except in the high than the high pressure sodium lamp outside of the capital and the initial installation cost of a single lamp in the laying of the capital, consumption capital and life places are much better than high pressure sodium lamp.
led lights to face the most important technical suspected difficult objectives: output power and luminous flux, the second optical default, thermal default and power system default. The improvement of output power and luminous flux from the basis of coherent epitaxy, chip technology and other high-power white led\\ s to further enhance. The default place, in the second optical lambertian LED in the form of radiation, the side-emitting bat airfoil and condenser several. In the areas of road lighting, in combination based on the default experience of Lambert and bat-airfoil than force, through the process of second optical default, so the scale of suffering led light light curves to meet the needs of road lighting. Cooling led lights need to focus on resolving the suspected one of the difficulties head, because of the high brightness requirement led lights, a lot of heat, and outdoor such consumption environment is more demanding than force, if the heat is not good will lead directly led to rapid aging, stability, reduce, except need power type led to self-heat, the cooling surface located in the side of the top air natural wandering hot because the street has a unique local government, outdoor nighttime consumption. led lights of the power system with conventional light sources differences between the LED\\ s low power, low working voltage and low output power of the sun energy battery components and low output voltage with very appropriate, how to make precision compression all the way to a group of led security, rely on the suffering of residence work is also examining an indicator led lights.