| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple device to be connected to a hose mask which guarantees a user wearing the hose mask at least to take fresh air in by the user's own lung force. SOLUTION: This connecting device has an opening 8, an opening 7, and an opening 9. The opening 8 is for connecting an auxiliary air blower 11 with an electric fan driven by a portable power means to take fresh air in, and the opening 7 is for connecting a hose 4 for a hose mask to be connected to a lung force sucking type hose mask, and a check valve 13 is attached to the opening 9. The check valve 13 is set so that fresh air can be taken in by the lung force when the pressure among the openings is lower than a prescribed value. Therefore, even a user wearing an ordinary hose mask can breathe well enough with the user's own lung force. |
