Apparatus for opening/closing a radiating section by using a shape memory alloy

Claim 1

In an apparatus including a housing having a radiating section while enclosing a heat generating section, a radiating section opening/closing apparatus comprising: at least one heat transmitting section fixed onto said heat generating section and for transmitting heat generated from said heat generating section, including first and second walls and a connection plate, the first wall being formed to one end of the connection plate and the second wall being formed to the other end of the connection plate, and the connection plate being mounted on said heat generating section, wherein the connection plate has a guide groove in the lengthwise direction in the center thereof; at least one expansion section for receiving said heat from said heat transmitting section and expanding/contracting at a specific temperature; at least one radiating section opening/closing section displaced by the expansion/contraction of said expansion section for opening/closing said radiating section; and at least one elastic member contracting/expanding while said expansion section expands/contracts for restoring said radiating section opening/closing section to an original position thereof; and at least one moving section including a supporting rod, a fixing plate, a rectangular ring, and a guide wheel, and for moving said at least one radiating section opening/closing section to open/close said radiating section according to the contracting/expanding of said at least one elastic member and said at least one expansion section, one end of the supporting rod being fixed to said at least one radiating section opening/closing section, and the other end of the supporting rod being fixed to the upper end of the fixing plate, the lower end of the fixing plate being fixed to the upper end of the rectangular ring, and the center portion of the guide wheel being rotatably inserted into the lower end of the rectangular ring, wherein the guide wheel is rotatably fitted into the guide groove of the connection plate of said at least one heat transmitting section.