Heat-dissipating fin capable of increasing heat-dissipating area, heat sink having such heat-dissipating fins, and method for manufacturing the same

摘要

A heat-dissipating fin (30) capable of increasing heat-dissipating area includes a lower plate (31) and an upper plate (32). The lower plate (31) is provided with a through-hole (33). The upper plate (32) extends from the lower plate (31) and is bent to be overlapped on the lower plate (31), thereby forming a heat-dissipating path (b) therebetween. The present invention further provides a heat sink (1) having such heat-dissipating fms (30), which includes a heat pipe (20) and the heat-dissipating fins (30). The heat pipe (20) has a heat-absorbing section (21) and a heat-releasing section (22). The heat-dissipating fin (30) has a lower plate (31) and an upper plate (32). The upper plate (32) is bent to be overlapped on the lower plate (31), thereby forming a heat-dissipating path (b) therebetween. The lower plate (31) and the upper plate (32) are provided with a through-hole (33) respectively in such a manner that these two through-holes (33) correspond to each other. The heat-releasing section (22) of the heat pipe (20) penetrates the through-holes (33) of the heat-dissipating fins (30) successively. In this way, the heat-dissipating area in the same height can be increased, thereby improving the heat-dissipating efficiency of the heat sink (1).