| 摘要 |
PROBLEM TO BE SOLVED: To provide a fan switch through which a worker can perform efficient ventilation operation easily. SOLUTION: Connection terminals T1, T2 to be connected with the series circuit of a fan F and a commercial power supply AC are provided on the body of the fan switch 10. A load open/close section 15 connected between the connection terminals T1, T2 and turning power supply to the fan F on/off, a control section 20 generating an on/off control signal for the load open/close section 15, and a drive circuit section 14 for driving the load open/close section 15 in response to the control signal from the control section 20, are contained in the body of the fan switch 10. A humidity sensor section and a temperature sensor section 40 for detecting ambient absolute humidity and temperature are contained in a sensor containing section provided on the front face of the body. The control section 20 turns the load open/close section 15 on/off intermittently based on the absolute humidity and temperature detected at both sensor sections 30, 40 and the increase/decrease rate thereof. |
