PROBLEM TO BE SOLVED: To provide a wireless power supply type electric apparatus which can perform a predetermined operation stably by reliably preventing an excessive temperature of an electric apparatus.SOLUTION: A wireless power supply type electric apparatus 10 has a power receiving portion 20 externally receiving power by wireless power supply, and performs a predetermined operation by the received power. The power receiving portion 20 has a power receiving coil 25 which is cylindrical with conducting wire 21 wound and receiving power supplied through a magnetic flux from an outside transmission antenna and generating heat, and a temperature-sensitive magnetic body member 30 arranged inside the power receiving coil 25 and having a characteristic of reducing a magnetic permeability by a temperature rise. When the power receiving coil 25 receives power and generates heat, the magnetic permeability of the temperature-sensitive magnetic body member 30 is reduced, and when receiving power of the power receiving coil 25 is reduced, the magnetic permeability of the temperature-sensitive magnetic body member 30 rises.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2019,JPO&INPIT【課題】電気機器の過温度を確実に防止して、所定の動作を安定して行わせることができる、無線給電式電気機器を提供する。【解決手段】この無線給電式電気機器10は、外部から無線給電により電力を受電する受電部20を有し、受電した電力によって所定動作をなすものであって、受電部20は、導線21を巻回して筒状をなし、外部の送電アンテナから磁束を媒介して供給される電力を受電して発熱する受電コイル25と、この受電コイル25の内側に配置され、温度上昇により透磁率が下がる特性を有する、感温磁性体部材30とを有し、受電コイル25が受電して発熱すると、感温磁性体部材30の透磁率が下がり、受電コイル25の受電電力が低下すると、感温磁性体部材30の透磁率が上昇する。【選択図】図2
