Patent ID: 7286346

Claim:
An electronic device comprising a host device and a peripheral device detachably connected to the host device, the peripheral device including: an electronic component that generates heat; a peripheral device side electrical connector electrically connected to the electronic component; a peripheral device side heat pipe having a first end thermally connected to the electronic component; and a peripheral device side heat transfer connector thermally connected to a second end of the peripheral device side heat pipe; the host device including: a host device side electrical connector detachably connected to the peripheral device side electrical connector; a host device side heat transfer connector detachably connected to the peripheral device side heat transfer connector; a host device side heat pipe having a first end thermally connected to the host device side heat transfer connector; and external heat discharge means thermally connected to a second end of the host device side heat pipe, wherein heat generated by the electronic component is transferred to the external heat discharge means through the peripheral device side heat pipe, the peripheral device side heat transfer connector, the host device side heat transfer connector, and the host device side heat pipe, the external heat discharge means discharges the heat from the electronic device, and the host device side heat pipe contains a first refrigerant and the peripheral device side heat pipe contain a second refrigerant, and the fast refrigerant has a vaporization temperature lower than the recondensation temperature of the second refrigerant.