Patent ID: 9541273
Date: 2017-01-10
CPC Classifications: F21K,F21V,F21Y,H05K

Claim:
1. A heat dissipation structure of a surface mount device light emitting diode (SMD LED), comprising: a fiber-based substrate including upper and lower end faces, with a plurality of spaced copper foils provided on the upper end face, with the lower end face provided with a metal sheet hung under or horizontally mounted below the lower end face; at least one SMD LED including a lower surface provided with two electrodes, with the two electrodes including an anode and a cathode and respectively connecting to two copper foils of the plurality of copper foils on the upper end face to form a conductive path; at least one engaging hole extending through one of the plurality of copper foils on the upper end face and through the upper and lower end faces of the fiber-based substrate, with the at least one engaging hole internally covered with a thermal conductive metal layer; and at least one engaging member made of thermal conductive metal and engaged in the at least one engaging hole, with the at least one engaging member including an upper end engaged with the one of the plurality of copper foils on the upper end face through which the at least one engaging hole extends, with the at least one engaging member further including a lower end engaged with both the at least one copper foil and the metal sheet on the lower end face of the fiber-based substrate, with the metal sheet including opposite first and second surfaces, with the metal sheet being thermally insulated from the lower end face with at least one of the first and second surfaces exposed to ambient environment, and wherein a space is defined by the first surface of the metal sheet and the lower end face, with the first surface in the space and the second surface exposed to the ambient environment.