Heat sink having heat-dissipating fins capable of increasing heat-dissipating area

摘要

A heat sink having heat-dissipating fins capable of increasing heat-dissipating area-includes a heat pipe and the heat-dissipating fins. The heat pipe has a heat-absorbing section and a heat-releasing section. The heat-dissipating fin has a lower plate and an upper plate. The upper plate is bent to be overlapped on the lower plate, thereby forming a heat-dissipating path (b) therebetween. The lower plate and the upper plate are provided with a through-hole respectively in such a manner that these two through-holes correspond to each other. The heat-releasing section of the heat pipe penetrates the through-holes of the heat-dissipating fins 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.

主权项

1. A heat sink (1) having heat-dissipating fins (30) capable of increasing heat-dissipating area, comprising:
a heat pipe (20) having a heat-absorbing section (21) and a heat-releasing section (22) extending from the heat-absorbing section (21); and a plurality of heat-dissipating fins (30) each having a lower plate (31) and an upper plate (32) extending from the lower plate (31), the upper plate (32) being folded to form an overlapping portion attached on the lower plate (31), thereby forming a heat-dissipating path (b) between the lower plate (31) and the upper plate (32) at a folding area, wherein a through-hole (33) is formed in the lower plate (31) and the upper plate (32) at the overlapping portion, and a periphery of the through-hole (33) is formed with an inner annular wall (311) extending from the lower plate (31), and an outer annular wall (321) extending from the upper plate (32) and abuttedly surrounding the inner annular wall (311), the heat-releasing section (22) of the heat pipe (20) penetrating the through-holes (33) of the heat-dissipating fins (30) successively so that the inner annular wall (311) is brought into thermal contact with the heat-releasing section (22) of the heat pipe (20).