| 摘要 |
PROBLEM TO BE SOLVED: To protect eyes of a user from organic gas and the like over a long time by jetting air supplied from an air source via an air hose to the eyes from an upper part of half face mask ensuring only the aspiration of the user to thereby form an air curtain over the eyes. SOLUTION: Air from an air source led to an intake port 4 via an air hose having an air control part on the midway position thereof is diffused in a space 6. The air in the space 6 is supplied to a space between the mask 1 and the nose of a user through a guard 6 preventing waterdrop as well as the air from striking a face of the user directly to thereby used for the respiration of the user, and part of the air is jetted from an opening 8 formed at an upper part of the mask 1 to thereby form an air curtain ahead of the eyes, protecting the eyes from organic gas, dusts and the like. The air jetted out of the opening 8 is maintained constant by the aid of air discharge and drainage valve 9. |
