Rear air-bag apparatus having advanced safety performance

In order to enhance the occupant protection by supporting the rear airbag during the rear collision and to protect the occupant from flying products such as glass fragments generated during the collision, the rear airbag device with the expansion of the rear airbag and the support unit protrudes above the seat is introduced. . The apparatus includes a rear collision sensor (10) provided on one side of the vehicle body to detect a rear collision; A control unit 20 for transmitting a control signal when an electrical signal input from the rear collision detection sensor 10 is equal to or greater than a reference value; A rear seat airbag module 100 which is built in the seat 30 and expands upon receiving a control signal from the control unit 20 and protrudes above the seat 30 to protect the occipital head of the occupant; The support unit for supporting the rear of the rear seat airbag module 100, the rear seat airbag module 100 is slid when the upper seat airbag module 100 is inflated, and protects the occupant's head from the flying products generated during the collision. 200);