PROBLEM TO BE SOLVED: To prevent an agent from being unnecessarily jetted at the operation of a power supply switch while improving the operability of the power supply switch.SOLUTION: A sensor 33 is provided at a front face part of a body case 50. A range of animal detection by the sensor 33 is prevented from extending upward. A power supply switch 46a is positioned above the sensor 33 at a top face part of the body case 50, or a front face part and side face part of the body case 50.