AIRBAG APPARATUS

An airbag apparatus includes an airbag, a collision detector, and a deploying-gas supplier. The airbag is configured to be deployed in front of an occupant sitting in a seat of a vehicle. The collision detector includes a sensor and is configured to detect an occurrence or sign of a collision of the vehicle. The deploying-gas supplier is configured to supply deploying gas into the airbag based on an output of the collision detector. The airbag includes a lower-half-restraining bag and upper-half-restraining bags. The lower-half-restraining bag is configured to be deployed in front of knees of the occupant. The upper-half-restraining bags are configured to be deployed between the lower-half-restraining bag and an upper body of the occupant and in a plane that faces the upper body.