OPTICAL-GLASS LENS FOR ELECTRONIC DISPLAY BOARD AND LED ELECTRONIC DISPLAY BOARD USING THE SAME

摘要

PURPOSE: An optical lens for an electronic display board and an LED display board using the same are provided to improve the viewing angle of an LED display board by adjusting the emission angle of an optical lens downward. CONSTITUTION: An LED lamp unit comprises an outer cap(25) constituting an outer frame. The outer cap has a hollow and side walls(25s) inclined about 79° to the bottom surface, corresponding to the installation slope of an optical lens(100). A wiring board(21) having wiring for driving an LED device is formed on the rear side of the outer cap. A chip LED lamp device(23) is installed in the wiring board and serves as a light emitting unit. The optical lens focuses the lights emitted from the chip LED lamp device at the front side of the outer cap.