Patent ID: 8757656

Claim:
An airbag which is inflated rearward from an instrument panel of a vehicle to come close a passenger seated in a passenger seat, the airbag comprising: a base chamber which is disposed at a front side of the vehicle; a left-half airbag which is continuous with the base chamber and is inflated on a front-left side of the passenger, wherein a first opening is formed through the left-half airbag at an upper portion thereof; and a right-half airbag which is continuous with the base chamber and is inflated on a front-right side of the passenger, wherein a first opening is formed through the right-half airbag at an upper portion thereof; wherein a recess is formed between the left-half airbag and the right-half airbag so as to face the passenger, when the airbag is inflated in front of the passenger, wherein the first opening of the left-half airbag and the first opening of the right-half airbag are communicated with each other, and wherein the first openings of the left-half airbag and the right-half airbag communicated with each other are formed to extend in a vehicle front-rear direction, wherein the first openings are formed in an elongated shape with a length in a longitudinal direction that is greater than a maximum width in a direction perpendicular to the longitudinal direction, and wherein a ratio of the length of the first openings in the longitudinal direction to a maximum width of the first openings in the direction perpendicular to the longitudinal direction is in a range of about 2 to about 10, when the airbag is not inflated.