| 摘要 |
PURPOSE: A mask is provided to support smooth respiration while not mixing air for inhalation with exhalation. CONSTITUTION: A mask includes a main body(110) formed to provide a respiration space separated from the face of human body while covering a face of human body; a nose wearing unit formed to surround the ridge of the nose by being extended from the bottom surface to the upward direction with the bottom surface facing the nostrils; an outlet pipe(150) discharging exhalation air from the nose of the wearer to the outside of the main body, a wearing member being capable of putting the main body on the human body; a first check valve(140) installed in the inner air intake; and a second check valve installed in the outlet pipe. |
