LOW-LIGHT-FAILURE HIGH-POWER LED ROAD LAMP AND MANUFACTURING METHOD THEREFOR

摘要

Disclosed are a low-light-failure high-power LED road lamp and a manufacturing method therefor. The method comprises: making a colour mark in advance on a tail end surface used for manufacturing N-type semiconductor elements (6) or P-type semiconductor elements (7); and arranging the N-type semiconductor elements (6) and the P-type semiconductor elements (7) in a matrix form between an upper beryllium-oxide ceramic chip (8) and a lower beryllium-oxide ceramic chip (9) which are provided with conductive circuits, to make the head end of each column of N-type semiconductor elements (6) connected in series connect to the tail end of the P-type semiconductor elements (7) or the tail end of each column of N-type semiconductor elements (6) connect to the head end of the P-type semiconductor elements (7), then attaching the lower beryllium-oxide ceramic chip (9) to the back surface of a circuit board (2) equipped with LED bulbs (3) through a graphene heat conduction grease layer (4), installing radiators (15) on the upper beryllium-oxide ceramic chip (8), and then installing both the circuit board (2) and the radiators (15) in a road lamp housing (1).