| 摘要 |
A breathing apparatus according to embodiments of the invention includes a facemask portion sized to cover a lower portion of a wearer's face. The facemask portion includes a flow chamber defined by a support layer and a cover. The flow chamber has a first opening disposed near a first end of the flow chamber and a second opening disposed near a second end of the flow chamber. At least one light emitting diode configured to emit light having a peak wavelength in the ultraviolet range is disposed between the first opening and the second opening in the flow chamber. |
