| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a respirator which is an all face respirator having a fan unit operating interlocking with the breathing of a user, which has a light source being switched on when the pressure inside of the face body becomes negative, and by which such a possibility that the user of the respirator finds out the switch on of the light source is high. <P>SOLUTION: The light source being switched on when it is detected that the inside space of the face body falls in a negative pressure is arranged in the fan unit and an inspection window confronting to the light source when the fan unit is installed to the face body is formed in the face body. <P>COPYRIGHT: (C)2011,JPO&INPIT |
