PROBLEM TO BE SOLVED: To provide a portable gas supply mounting a gas inhalation mask that becomes a shape for automatically covering a circumference of a mouth and nose of an inhaler at the time when inhaling and administering gas for inhalation, and provide a gas inhalation mask having a structure suitable for the portable gas supply.SOLUTION: A gas inhalation mask 15 is provided as follows: the whole is formed of the flexible material being impermeable to gas； a peripheral gas introduction unit 19 expanded by the introduction of the gas for inhalation discharged from a discharge nozzle 13 to become a shape of the inhalation shape part and capable of being contracted when the gas for inhalation is not introduced is provided in the tip end peripheral edge of an inhalation shape part 17； a resistance member 20 for giving resistance to a flow of gas for inhalation from the discharge nozzle toward the inhalation shape part is provided in a base side connection part 16； and a gas guide flow path 21 for introducing the gas for inhalation discharged from the discharge nozzle into the peripheral gas introduction unit is branched from between the resistance member and the discharge nozzle in the base side connection part.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】吸入用ガスを吸入、投与する使用時には、自動的に吸入者の口及び鼻の周囲を覆う形状になるガス吸入用マスクを装着した携帯ガス供給器及び携帯ガス供給器に適した構造を有するガス吸入用マスクを提供する。【解決手段】ガス吸入用マスク１５は、全体が、ガスを透過しない柔軟材料によって形成され、吸入形状部１７の先端部周縁に、吐出ノズル１３から吐出された吸入用ガスが導入されることにより膨張して吸入形状部の形状となり、吸入用ガスが導入されないときには収縮可能な周縁部ガス導入部１９が設けられ、基部側接続部１６には、吐出ノズルから吸入形状部に向かう吸入用ガスの流れに対して抵抗を与える抵抗部材２０が設けられ、基部側接続部における抵抗部材と吐出ノズルとの間から、吐出ノズルから吐出された吸入用ガスを周縁部ガス導入部に導入するガスガイド流路２１を分岐させている。【選択図】図１
