traditional lamp often neglected, no warranty and after that the damaged public lighting electricity seized social widespread problems such as difficult, also can bring a lot of inconvenience to residents' life, and if used in urban residential area of the residential area (housing estate) is a residential building as the main body and is equipped with business outlets, culture, education, entertainment, greening, public and public facilities and formed a certain scale of residents living quarters, not for the urban traffic trunk road across the complete area.'