Air bag apparatus

摘要

An air bag apparatus provided at a seat back for a vehicle body has an inflator which has a substantially cylindrical configuration. The inflator is accommodated within a bag body which is expanded due to the gas ejected from the inflator. The inflator is disposed at the seat back such that the longitudinal direction of the inflator is directed along the height direction of the seat back. Accordingly, the air bag apparatus can be made compact in the thickness direction of the seat back.