To efficiently cool a power device by preventing a circuit failure and an air duct loss by the power device such as a switching element provided in an air duct of an electric blower.
An attachment through hole 23 is formed on an electric blower case 6 storing a motor 2 and a centrifugal fan 4 rotationally driven by the motor 2. A radiation fin 24 which is a radiation member is provided in the electric blower case 6 to cover the attachment through hole 23. The power device 26a is provided outside of the electric blower case 6 to contact the radiation fin 24. The power device 26a is cooled by the radiation fin 24 cooled by air flowing in the electric blower case 6. Consequently, the circuit failure and an air duct loss by the power device 26a provided in the air duct of the electric blower 1 can be prevented and the power device 26a can be efficiently cooled.
| JPS5822499U | 1983-02-12 | |||
| JPH11336696A | 1999-12-07 | |||
| JP2004019635A | 2004-01-22 |
Naoto Koyama
Akira Kashiwagi