TRAFFIC CONTROL SYSTEM OF INTERSECTION USING TRAFFIC SIGNAL TO COPE WITH POWER INTERRUPTION BY SIGNAL LIGHT USING HIGH LUMINANCE LED AND DC POWER SUPPLY

摘要

PROBLEM TO BE SOLVED: To provide a traffic signal which can operate even in power interruption of normal power. SOLUTION: Power is supplied to the traffic signal having a signal light constituted of high luminance LEDs by using AC power of the normal power and DC power by a battery, etc. together. Thus, the traffic signal is not suddenly enabled and operations of the signal light continue even in the power interruption of the normal power. COPYRIGHT: (C)2007,JPO&INPIT