| 摘要 |
<p>In a mask device with blower, a sensor (15) for warning is disposed, which detects a movement position (d2) of an exhaust valve (7) corresponding to the case where an internal pressure of a face body is lower than an outer atmospheric pressure at the time of inhaling air in a non-contact state and outputs a signal. A warning device operates in accordance with a signal that is output from the sensor (15) for warning.</p> |
