| 摘要 |
<p>A respiratory protection device is provided that allows the wearers of a facepiece to smoothly have a conversation with each other. A respiratory protection device (1) includes a facepiece (10). The protection device (1) also includes a voice amplifier (40) that includes a microphone and a speaker therein, a detection unit that directly or indirectly detects the inner pressure of the facepiece, a power source unit, and a control unit. The control unit controls so as to place the voice amplifier (40) in an operational state or a non-operational state, based on a result of comparison of information from the detection unit with a determination reference in the control unit.</p> |
