| 摘要 |
PROBLEM TO BE SOLVED: To surely lead exhalation of a subject to an exhalation density detection sensor, regardless of a shape of his/her face, differing by each subject.SOLUTION: A mask 1 worn on the face of a subject covers at least part of the nose and mouth of the subject, and includes a wall part 2 partitioning an interior space 2b. An exhalation introduction part 3 is arranged in the interior space 2b, and introduces exhalation of the subject. A ventilation part 4 partitions a ventilation path for introducing exhalation of the subject, introduced from the exhalation introduction part 3 to an exhalation density detection sensor. The exhalation introduction part 3 is adjustable in its position in the interior space 2b. |
