Patent ID: 7971267

Claim:
An air supplying device in combination with a welding mask the mask comprising a head band that helps wearing of the welding mask on an operator's head and a face shield axially connected with both sides of the head band and having a viewing window provided on a front thereof, to supply air from a rear end of the face shield into the face shield, the air supplying device comprising: a housing connected to an inside of the face shield, thereby forming a hermetic space for circulating the air therethrough, and comprised of a supply port formed at a middle rear end thereof to guide in the air, a first outlet part formed at a middle front end in the form of a curved surface to exhaust the air over the viewing window, and a second outlet formed on each side of the front end and extended respectively toward both sides of the viewing window to exhaust the air therethrough, a connection member axially connected to the supply port to be pivotable laterally by a predetermined angle and also connected to a bellows hose for supplying the air at a rear end thereof; a first opening/closing member connected to the first outlet part to interrupt and allow the air supply; and second opening/closing members connected to the both second outlets respectively to interrupt and allow the air supply.