Fixing Device and Image Forming Apparatus with Fixing Device That Ensure Effective Cooling of Induction Heating Unit

A fixing device includes a housing, an induction heating unit, a first rotator, a second rotator, a shield member, an airflow generation unit, a cooling air path, and inlets. The shield member opposes the induction heating unit on a side thereof opposite from the first rotator. The airflow generation unit generates an airflow to cool the induction heating unit. The cooling air path is provided extending along the shield member on a side thereof opposite from the induction heating unit. The inlets open in the shield member, plurally arranged at intervals and paralleling the axis, for causing the airflow from the cooling air path to flow in toward the induction heating unit. The intervals between adjacent axially end-ward inlets are set narrower than the interval between axially central adjacent inlets.