To provide a vertical shaft type blade row impeller device, which can be provided in relatively simple structure and at low cost, and in which a windmill is rotated by wind of any strength and in any direction to provide effective rotation energy.

An upper and a lower blade rotation shaft support members 2 are provided in parallel at an interval from each other to be perpendicular to a rotation shaft 1 at a center, and blade rotation shafts 3 and blade stopping rod members 4 are provided in parallel to the rotation shaft 1 at circumferential edge between both blade rotation shaft support members 2. Rectangular blades 5 having similar height to that of the blade rotation shafts 3 are provided to freely or at least partly rotate around the blade rotation shafts 3 and to stop at the blade rotation shaft or the blade stopping rod members 4. The blade stopping rod members are linearly provided at both the right and left ends of the plurality of blade rotation shafts 3 having the blades 5 to form a blade row 6 composing a basic unit. Each basic unit thus composed such that the adjacent basic units are disposed with a constant interval and with a specific angular relation, and a plurality of sets thereof are provided to form the vertical shaft type blade row impeller device.