US Patent 7390016 Curtain airbag device and vehicle provided with the same

A curtain airbag device includes a curtain airbag disposed along an upper side surface of a vehicle facing a cabin in a folded state to be able to expand downwardly along the side surface, and an inflator for inflating the curtain airbag. A guide airbag is arranged to expand substantially at the same time when the curtain airbag is expanded. The guide airbag guides the curtain airbag toward the cabin and/or regulates an expanding direction of the curtain airbag.