Patent attributes
An occupant protection device, which protects an occupant seated in a seat, includes: an airbag; and a holder configured to accommodate and hold the folded airbag. The holder is arranged in front of a waist of the occupant seated on the seat. The airbag inflows inflation gas into the inside and inflates so as to protrude from the holder and toward the occupant side, the airbag including: a lower inflation portion configured to cover an upper surface of the thigh; an upper inflation portion which configured to cover a front surface of an upper body; and a cross-inflation portion arranged between the lower inflation portion and the upper inflation portion. A length dimension of the holder is set to a dimension which secures a space for arranging the inflated cross-inflation portion between the waist and the holder when the inflation of the airbag is completed.