| 摘要 |
A cooling fan (100) of the present invention has a thermal fuse terminal (60) that forms an arc-shaped groove (65A) and a thermal fuse (50) having a contact pin (50-1). A contact portion formed by fitting the contact pin (50-1) to the arc-shaped groove (65A) concentrates conductive heat of radiant heat and the conductive heat generated in the thermal fuse terminal (60) when the contact portion is heated to a high temperature. The concentrated conductive heat is rapidly transmitted to the thermal fuse (50), and the thermal fuse (50) of a heat conduction type resistor (1) is quickly opened. In a situation such as restraint on a motor (100-1), an effective fail safety operation may allow prevention of damage to parts due to radiant heat, a reduction in heat damage, and securement of customer safety, and in particular, when motor conditions are limited in a low temperature zone, the delay of thermal fuse disconnection can be greatly reduced, thus securing robustness to the most important safety. |
