A hood device is provided with a frame-shape base member and a hook member. The hook member is provided with a rotation unit, a hooking unit, a first engaging unit which engages with the peripheral wall of the base member when the hooking portion is used, and a second engaging unit which engages with the peripheral wall of the base member when the hooking unit is stored. Both lateral edges of the peripheral wall of the base member are provided with a rotation support unit, a first rotation limiting unit against which the first engaging unit abuts, a second rotation limiting unit against which the second engaging unit abuts, a first holding unit into which the first engaging unit is detachably fitted, and a second holding unit into which the second engaging unit is detachably fitted.