Vehicle occupant protection device

A vehicle occupant protection device comprising:

• an airbag that is inflated and deployed upon being supplied with gas, and that is constructed as an integrated bag body configured to cover a head portion of a vehicle occupant and includes a forward-deploying portion that is configured to deploy in an area that includes a front of the head portion, and a pair of left and right side-deploying portions which are connected to the forward-deploying portion and configured to deploy in an area that includes both left and right sides of the head portion, and that is housed in a folded state in an upper portion of a vehicle seat;
• an inflator that is provided in an upper portion of the vehicle seat, and supplies gas to the airbag when a vehicle collision is detected;
• and
• an airbag moving mechanism that, when it is determined that a vehicle collision is unavoidable, is configured to shift the airbag from the upper portion of the vehicle seat over the head portion to a seat front side before the airbag is deployed, so that a front end portion of the airbag is configured to be disposed further to the seat front side than a head top portion of the vehicle occupant who is seated in a normal state.