| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent deterioration caused by spark of AC/DC power supply switching means when vibration is applied to a vacuum cleaner, in the vacuum cleaner for AC and DC.SOLUTION: A first drive part (17) and a first switching part (15), and a second drive part (18) and a second switching part (16) are connected in parallel. A control unit (13), when driving an electric blower (2) by a commercial power supply (8), controls the first drive part (17) and the first switching part (15) to an ON state, and controls the second drive part (18) and the second switching part (16) to an OFF state. When driving the electric blower (2) by a secondary battery (9), the control unit controls the first drive part (17) and the first switching part (15) to an OFF state, and controls the second drive part (18) and the second switching part (16) to an ON state. Thus, deterioration caused by spark of an AC/DC power supply switching part is prevented.</p> |
