| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a portable and simple air mask thoroughly solving the following problem: a conventional emergency tool against fire disaster at a closed space such as a building, gas poisoning or oxygen deficiency due to hazardous gas caused by explosion, gas poisoning or oxygen deficiency due to volcanic gas such as hydrosulfuric gas, or every respiratory hazard such as an affair of leakage of harmful powder dust such as asbestos, is inconvenient in portability and has no practicality at all, and is not effective depending on the kinds of oxygen deficiency or poisoning gas. <P>SOLUTION: The portable and simple air mask is operated as follows: putting a bag ensuring eyesight of a user, foldable into small one and having air-tightness, around her (his) head part; slightly closing the neck part with a belt or the like so as to cover her (his) head all over; supplying oxygen or oxygen-enriched air, or air little by little to the inner part of the bag through a soft tube with a portable and small gas cylinder. <P>COPYRIGHT: (C)2008,JPO&INPIT |
