Patent ID: 8888126

Claim:
A seat cushion airbag device mountable to a vehicle seat, the vehicle seat comprising a seat portion comprising a seat cushion supported from below by a support portion of a seat frame, the seat cushion airbag device comprising: an airbag having a front portion attached to the seat frame and comprising: an inflation portion comprising an upper fabric portion and a lower fabric portion, which are arranged to overlap with each other in an upper-lower direction and which are joined to each other to form a bag shape, the inflation portion being inflated between the support portion and the seat cushion by an inflating fluid supplied from an inflating fluid generation source in response to an impact applied to a vehicle in which the vehicle seat is mounted from a front side of the vehicle seat, the inflating fluid bulging a seat surface of the seat portion and suppressing a forward movement of an object to be restrained on the seat portion; and a restriction member extending in a front-rear direction of the vehicle seat within the inflation portion, the restriction member bridging the upper fabric portion and the lower fabric portion and restricting an inflated thickness of the inflation portion in the upper-lower direction, the restriction member restricting the inflated thickness in the upper-lower direction from a larger thickness in a front side of the inflation portion to a smaller thickness toward a rear side of the inflation portion, and the upper fabric portion on an upper side of the restriction member being inclined downward from the front side of the inflation portion toward the rear side of the inflation portion.