AIRBAG DEVICE FOR PEDESTRIAN PROTECTION

A pedestrian protection airbag device as including a gas generator that generates expansion gas and an airbag that is expanded by the expansion gas that protects a pedestrian and the like that collides with the vehicle by deploying from the boundary part of the hood and the windshield of the vehicle. Furthermore, the airbag includes a main chamber enabled to deploy from the boundary part on an upper part of the hood and a sub-chamber connected to the lower part of the main chamber that deploys prior to the main chamber under the hood.