Head protection airbag device for vehicle

A head protection airbag device for a vehicle, comprising:

• a front seat expansion portion that is folded into a long, narrow shape and contained along a door opening, and that, by an inflow of gas via an upper side communication channel that is formed with a length direction thereof along the vehicle front-rear direction, is expanded and deployed between a head area side surface of an occupant sitting on a front seat and a door glass of a front seat side door;
• a rear seat expansion portion that is provided at the vehicle rear side of the front seat expansion portion and that is folded into the long, narrow shape and contained along the door opening, and that, by the inflow of gas via the upper side communication channel that is formed with the length direction thereof along the vehicle front-rear direction, is expanded and deployed between a head area side surface of an occupant sitting on a rear seat and a door glass of a rear seat side door;
• an upper expansion portion that is provided at an upper edge side of the rear seat expansion portion and that, by the inflow of gas, is expanded and deployed more promptly than the rear seat expansion portion to the vehicle upper side relative to a line joining a plurality of attachment pieces provided along an upper edge of a rear side expansion portion and is expanded and deployed such that a protection area of the head area side surface of the occupant sitting on the rear seat is covered by the rear seat expansion portion, at a compartment outer side of a ceiling member;
• a rear end side fixing portion that is set at a non-expanding portion, which is provided at the vehicle rear side of at least one of the upper expansion portion and the rear seat expansion portion, and that fixes the non-expanding portion to a quarter pillar inner panel covered by a quarter pillar garnish;
• a rear side strap disposed at a lower edge side rear end portion of the non-expanding portion attached to the quarter pillar inner panel;
• and
• a border portion between the ceiling member and the quarter pillar garnish, which border portion is configured such that a deployment area of the upper expansion portion falls within a range where the ceiling member is arranged.