WINDOW BLIND OPERATION DEVICE

PROBLEM TO BE SOLVED: To provide a window blind operation device capable of downsizing, improving design, and reducing cost.SOLUTION: A window blind operation device includes: an operation part 42 provided movably on an outer surface of a double glazing glass plate 12; and a follower 44 facing each other with the operation part 42 at least by sandwiching the glass plate 12 and provided movably inside the double glazing. A groove part 50d is formed in the operation part 42. The groove part 50d extends in a movement direction of the operation part 42, and is arranged at such a position that is offset from a center line of the operation part 42 in a direction orthogonal to the movement direction of the operation part 42. In the operation part 42, a magnet 56 is arranged at a position on the center line side from the groove part 50d. A guide rib 46 extending in the movement direction of the operation part to be fitted into the groove part and guiding the operation part 42 is provided in the glass plate. A stopper preventing movement of a prescribed amount or more of the operation part 42 is formed in both end parts of the guide rib 46.