| 摘要 |
<p>PURPOSE:To improve handleability by switching the operating state set by first switch over to the operating state set by third switch after an optional time set by second switch. CONSTITUTION:A motorized blower, a dust collecting section, a control circuit to control said blower and section and an operating section to set the operating state are provided. The first switch 19 to set current operating state, or current air flow, is provided in said operating section, and said state is represented by light-emitting diodes 20-1-20-4. Also, the second switch 21 to set the time and a third switch 23 to set the operating state after the set time are provided, and the current operating state can be switched over to the operating state by the third switch 23 after an optional time set by the second switch 21. The set time of said second switch is displayed by light-emitting diodes 22-1-22-4. As a result, handleability is improved.</p> |
