| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an electric tool capable of efficiently cooling circuit elements on a circuit board, and reducing adhesion of dust to the circuit elements on the circuit board.SOLUTION: The electric tool has: a motor 2 provided in a body housing 1; a circuit board 7 provided behind the motor, in the body housing; an exhaust fan 3 provided between the circuit board and the motor; and air inlets 5 provided at a rear end part of the body housing, for introducing the outside air into the body housing, on the basis of rotation of the exhaust fan. The circuit board 7 is provided so that a surface thereof on which the circuit elements are mounted faces the motor 2. There is provided a dust guard plate 10 having the area covering the circuit board 7, between the circuit board 7 and the air inlets 5. The dust guard plate 10 and the circuit board 7 have air vents 9, 11 for guiding the outside air introduced from the air inlets 5 into the mounting surface side.</p> |
