Communication system, for pedestrian traffic signal lamp device and traffic signal control machine

摘要

PROBLEM TO BE SOLVED: To provide a communication system requiring no supports for installing an antenna without impairing the appearance of a road.;SOLUTION: The pedestrian traffic light 1 installed at a road is provided with an optical unit 2 having an LED 7 emitting light and an antenna 4 embedded in the optical unit 2 and having directivity to a first area A1 near the location of the pedestrian traffic light 1.;COPYRIGHT: (C)2009,JPO&INPIT