Patent attributes
A pedestrian protection airbag device has an airbag case that is provided on a bottom surface side of a rear end portion of a vehicle hood, an airbag that includes a hood underside bag portion that is housed inside the airbag case and is inflated and deployed towards the vehicle rear side by pressure from gas which is generated by an inflator, and that is laid out on a bottom surface side of the hood, and that also includes a bag main body portion that is connected to the hood underside bag portion and that is inflated and deployed towards the vehicle top surface side from between a rear end portion of the hood and a glass windshield, and vertical joining portions that join the airbag vertically and reduce the thickness in the vehicle up-down direction of the hood underside bag portion in the inflated and deployed state.