DRIVER'S SIDE AIRBAG DEVICE

[Problem] To provide a driver's side airbag device where an internal diffuser and an airbag cushion can be stitched so as to be able to promptly break. [Resolution] A driver's side airbag device is provided with a diffuser that is contained in an airbag cushion and straightens gas flow from an inflator . The diffuser has a connecting part that is connected to the inflator and one or a plurality of supply ports that supply gas received from the inflator into the airbag cushion . The supply ports include a passenger side supply port that overlaps at a predetermined location of the occupant side panel of the airbag cushion with the diffuser contained therein. The driver's side airbag device is further provided with a temporary stitched part that breakably stitches the diffuser and a predetermined portion of the occupant side panel of the airbag cushion across the occupant side supply opening of the diffuser