DIGITAL DISPLAY APPARATUS OF TRAFFIC SIGNAL LAMP, ESPECIALLY DISPLAYING REMAINING TIME OF GREEN LIGHT CONTROLLED BY MICRO CONTROLLER

摘要

PURPOSE: A digital display apparatus of a traffic signal lamp is provided to reduce traffic accident and power consumption by displaying a remaining time through a display window with a green digit. CONSTITUTION: A display window(15) is installed in the front part of a digital display apparatus body(19) installed in the side of a green lamp(14) of a crossroad traffic signal lamp. A dip switch(10) is formed in the side of the display window. A switching power supply is connected to an AC input port and a DC input port in the body. A digital conversion relay operation unit is connected to a micro controller having automatic control function. Seven light emitting diode segment(FND) and dip signal are connected to the green lamp and the micro controller displays remaining time in a digital digit.