Temperature protection device of electronic device

A temperature protection device of an electronic device, the temperature protection device to be inserted and connected in a current-carrying circuit between a power supply unit of the electronic device and an electronic device main body in which a temperature detecting element is installed, the temperature protection device comprising:

• a first switch inserted and connected in series in the current-carrying circuit from the power supply unit to the electronic device main body;
• a cutoff unit for controlling on/off of the first switch;
• a current fusing element of which one end is connected to the current-carrying circuit to the electronic device main body;
• a second switch connected to an other end of the current fusing element;
• and
• a controller for controlling on/off of the second switch based on a temperature detection signal from the temperature detecting element of the electronic device main body,
• wherein
• when the temperature detection signal shows an abnormal condition, the controller turns on the second switch for supplying electric current to the current fusing element to cause a blowout;
• and
• the cutoff unit turns off the first switch for cutting off the current-carrying circuit in response to the blowout of the current fusing element.