Patent ID: 7021656

Claim:
An airing device for a vehicle, comprising: a bag housing case adapted to be disposed below a rear end of a bonnet in proximity to a bottom portion of a windshield of the vehicle, the bag housing case having an opening and a cover mounted to close the opening; an airbag housed in a deflated, folded state within the bag housing case for deployment forward of the windshield to mitigate an impact on an obstacle when the obstacle collides with the airbag being deployed; a plate member disposed within the bag housing case and connected to the airbag; a strap connecting the plate member to a sidewall of the airbag inside the bag housing case; and a bag pressure release mechanism disposed in a confronting relation to an inside of the airbag, said mechanism being designed to release an internal pressure of the airbag when the internal pressure of the airbag reaches a predetermined pressure after the airbag is inflated, thereby preventing an increase in the internal pressure of the airbag, wherein the cover is designed to open the opening of the bag housing case when subjected to a force produced when the internal pressure of the airbag reaches a given pressure less than the predetermined internal pressure, as the airbag is inflated, wherein the plate member is designed such that the plate member covers the bag pressure release mechanism when the airbag is in the deflated, folded state within the airbag and continues to cover the bag pressure release mechanism to thereby prevent the bag pressure release mechanism from being subjected to the given pressure created inside the airbag until the plate member is released from coverage of the bag pressure release mechanism when pulled by the strap as the sidewall of the airbag uprises due to continuing inflation and deployment of the airbag occurring after the cover opens the opening of the bag housing case, and wherein the bag pressure release mechanism is designed to release internal pressure of the airbag when the internal pressure of the airbag is caused to increase from the given pressure to the predetermined pressure due to collision of the obstacle with the airbag being deployed.