| 摘要 |
PROBLEM TO BE SOLVED: To provide a vacuum cleaner which can easily restrain a battery discharge by simple structure. SOLUTION: By setting a stopping switch 20a of an operation means 21, a microcomputer 31 judges so that a voltage VR detected by a set voltage detecting part 44 is less than a threshold voltage VB, and makes an electromotive fan stop. By the voltage VR which is lower than the threshold voltage VB, a transistor Q1 gets in the state of off, a power supply from a microcomputer power source 37 to the microcomputer 31 is blocked, and a discharge is restrained, and the discharge cycle life of a storage battery E. is prolonged. By setting a weak-position setting switch 20b and a strong-position setting switch 20c, the detected voltage VR becomes lower than a threshold voltage VA and higher than the threshold voltage VB, and the transistor Q1 gets into the state of on, and the microcomputer 31 operates by the power supply of the power source for the microcomputer 37. By the threshold voltage VR generated by continuous setting operation, corresponding with the setting operation, the drive of the electromotive fan can be controlled.
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