Occupant protection device

An occupant protection device, comprising:

• a seat having a seat portion and a backrest portion;
• a first restraining member configured to restrain a left shoulder of an occupant seated on the seat, an upper end portion of the first restraining member being fixed to a left upper end side of the backrest portion, an intermediate portion between the upper end portion and a lower end portion of the first restraining member being housed in a left side face of the backrest portion and a left side face of the seat portion;
• a second restraining member configured to restrain a right shoulder of the occupant seated on the seat, an upper end portion of the second restraining member being fixed to a right upper end side of the backrest portion, an intermediate portion between the upper end portion and a lower end portion of the second restraining member being housed in a right side face of the backrest portion and a right side face of the seat portion;
• a take-up unit that holds and takes up each of the lower end portion of the first restraining member and the lower end portion of the second restraining member, the take-up unit being disposed on a front edge side of the seat portion;
• and
• a lifting unit that causes a front edge side of a seat face of the seat portion to rise,
• wherein the first restraining member is fed out from a housing portion of the seat owing to being taken up by the take-up unit, and restrains the left shoulder of the occupant from the front of the left shoulder, and the second restraining member is fed out from a housing portion of the seat owing to being taken up by the take-up unit, and restrains the right shoulder of the occupant from the front of the right shoulder, and
• wherein the lifting unit causes the front edge side of the seat face of the seat portion to rise when the take-up unit takes up the first restraining member and the second restraining member.