KNEE AIRBAG DEVICE

[Problem] [0002] To provide a knee airbag device that can quickly and reliably restrain a lower extremity of an occupant, and thereby can suppress degradation of restraining performance of the occupant by a seat belt. [0003] [Resolution Means] [0004] A knee airbag device according to the present invention includes: an airbag that restrains a lower extremity of an occupant by expanding and deploying below an instrument panel of a vehicle; and an inflator that supplies expansion gas to the airbag. The airbag includes, when the inside of the vehicle is a first side and the outside of the vehicle is a second side, a first portion positioned on the first side and a second portion positioned on the second side. Furthermore, the first portion of the airbag protrudes more toward the occupant side than the second portion.