Occupant protection device

An occupant protection device for a vehicle, the occupant protection device comprising:

• a collision predictor configured to predict a collision of the vehicle;
• a main airbag configured to deploy toward an occupant from a front of the vehicle when a collision of the vehicle is predicted by the collision predictor;
• a seat allowing the occupant to be seated, and movable in a front-back direction of the vehicle;
• a sub-airbag accommodated in an upper part of the seat, and configured to deploy downward from above the occupant;
• and
• a deployment controller configured to, when a collision of the vehicle is predicted by the collision predictor, cause the sub-airbag to deploy from the upper part of the seat and subsequently cause the main airbag to deploy, and
• a protruding member accommodating the sub-airbag and configured to protrude above the occupant from the upper part of the seat, wherein
• the deployment controller is configured to cause the protruding member to protrude from the seat to cause the sub-airbag to deploy from the protruding member when a collision of the vehicle is predicted by the collision predictor.

An occupant protection device for a vehicle, the occupant protection device comprising:

• a main airbag configured to deploy toward an occupant from a front of the vehicle when a collision of the vehicle is predicted;
• a seat allowing the occupant to be seated and having a seatback configured for accommodating a back of the occupant, and movable in a front-back direction of the vehicle;
• a sub-airbag accommodated in an upper part of the seat, and configured to deploy downward from above the occupant, with the downward deployment including downward extension of a portion of the sub-airbag from a position that is above an uppermost point of the seatback;
• and
• circuitry configured to
• predict a collision of the vehicle, and
• when a collision of the vehicle is predicted, cause the sub-airbag to deploy from the upper part of the seat and subsequently cause the main airbag to deploy.