Patent ID: 8387247

Claim:
A method of manufacturing a heat radiator comprising the steps of: providing a metal plate having a prescribed coefficient of thermal conductivity; providing a cutting tool having a blade part formed on a distal end thereof; positioning the cutting tool at a surface of the metal plate at a prescribed distance from an end of the metal plate; performing a fin-formation step with the cutting tool at a prescribed pitch and in a prescribed direction along the surface of the metal plate by gouging the surface of the metal plate at a prescribed width and thickness with the cutting tool to form a fin having a basal end thereof connected to the metal plate; sequentially increasing the gouging depth of the surface of the metal plate during subsequent fin-formation steps with the cutting tool to gradually increase the height of the formed fins until a fixed gouging depth is reached; and performing the fin-formation step at the fixed gouging depth with the cutting tool to form heat-radiating fins of the same height.