RADIATOR WITH RADIATION FIN

PROBLEM TO BE SOLVED: To solve the problem that there is not an ideal structure that eliminates all problems such as radiation directivity which limits installation conditions, weight which blocks weight saving, capacity which does not fit compactness of an electronic device caused by daily advancing demands from recent small communication terminal devices, home electric appliances, portable medical equipment, etc., although in the field of relatively low power consumption heat sinks, conventional extrusion molding type heat sinks or corrugate fins have been increasingly used.SOLUTION: A radiator made of thin sheets has structure in which three or more radiation blades which radially extend from a heat collecting part to an outside via valley-folded ridges are disposed in the form of going around the outer circumference of the heat collecting part. Both ends of the valley-folded ridge of each of the three or more radiation blades break away from ends of an adjacent valley-folded ridge and each radiation blade is provided with a mountain-folded ridge not parallel to its valley-folded ridge outside of the valley-folded ridge.