| 摘要 |
PURPOSE: An automatic power blocking device in case of disconnection of a switching device of a heater is provided to automatically block power if a switching device of a heater is disconnected, thereby preventing fire in advance. CONSTITUTION: A temperature fuse(10) is serially connected to an AC power source. A heating line heater(20) comprises the first heating line(1), a thermistor(3), and the second heating line(2). A switching unit(8) switches supplying and blocking of power. A disconnection detecting unit(30) detects a fuse disconnection signal. A fuse disconnection unit(40) disconnects a temperature fuse if a fuse disconnection signal is inputted. |
