Curtain airbag device

To provide a curtain airbag device that allows for smooth downward deployment of a curtain airbag. A C-pillar 4 has a guide rod 5 attached thereto for guiding a rear portion of a curtain airbag 1 when the curtain airbag 1 is being inflated downward. A bottom corner area in the rear portion of the curtain airbag 1 has a base end of a link strap 7, functioning as a linking member, attached thereto. A front end of the link strap 7 is provided with a loop 7a which is loosely wound around the guide rod 5. For guiding a downward movement of the link strap 7, a linear member 20 extends between a lower portion of the curtain airbag 1 and the link strap 7. The linear member 20 extends through guide components 21, 22. During a downward deployment process of the curtain airbag 1, the linear member 20 pulls the loop 7a of the link strap 7 downward. Thus, the link strap 7 moves downward smoothly along the guide rod 5, whereby smooth deployment of the curtain airbag 1 is achieved (Fig. 1).