Patent ID: 8757473

Claim:
A process of making a heat radiating structure for LED comprises: (1) providing a PCB board ( 4 ), a heat conducting plate ( 6 ) and a heat radiating plate ( 9 ); (2) providing a first locating hole ( 41 ) and a first fixation hole ( 42 ) penetrating both sides of the PCB board ( 4 ), and welding a copper plate ( 5 ) to one side of the PCB board ( 4 ); while soldering an electrode welding leg ( 3 ) to the other side of the PCB board ( 4 ), then coating the surface of the copper plate ( 5 ) with a solder paste; (3) providing a second locating hole ( 61 ) and a second fixation hole ( 62 ) penetrating both sides of the heat conducting plate ( 6 ); (4) overlaying one side of the heat conducting plate ( 6 ) with one side of the PCB board ( 4 ) which side is provided with the copper plate ( 5 ), and the first locating hole ( 41 ) being arranged in correspondence with the position of the second locating hole ( 61 ), similarly, the first fixation hole ( 42 ) being arranged in correspondence with the position of the second fixation hole ( 62 ); using a fixation column ( 8 ) to pierce through both of the first fixation hole ( 42 ) and the second fixation hole ( 62 ) for connecting together the PCB board ( 4 ) and the heat conducting plate ( 6 ) to form an integral piece of them; (5) using a heat conducting column ( 7 ) to pierce through both of the first locating hole ( 41 ) and the second locating hole ( 61 ), and one end of the heat conducting column ( 7 ) being protruded outside one side of the PCB board ( 4 ), a length of the protruding end of the heat conducting column ( 7 ) being greater than a thickness of the electrode welding leg ( 3 ); (6) placing the integral piece of the heat conducting plate ( 6 ) and the PCB board ( 4 ) produced by the step (5) on a pressing equipment, and utilizing the pressing equipment to press an upper-end surface of the heat conducting column ( 7 ) so as to adjust the length of the protruding end of the heat conducting column ( 7 ), and to make the upper-end surface of the heat conducting column ( 7 ) and the upper surface of the electrode welding leg ( 3 ) be on a same plane; (7) pasting an inner side of the heat radiating plate ( 9 ) on other side of the heat conducting plate ( 6 ) fixedly.