Overhead-cage downspout

The invention relates to an overhead-cage downspout, comprising a base, a semispherical hood and an overhead-cage cover, wherein the top of the base is internally provided with a cavity, the bottom of the cavity is provided with a connected through hole, the semispherical hood includes a plurality of ribs, a top ring portion and a bottom ring portion, the ribs join at one end at the top ring portion, the ribs are connected at the other end to the bottom ring portion in a spaced manner, a drain hole is formed between every two ribs, the bottom ring portion is connected to the through hole of the base to form a first receiving space, the overhead-cage cover comprises a plurality of cage posts and a joint ring, the cage posts are arranged at the joint ring in a spaced manner, a water inlet is formed between every two cage posts, the joint ring is joined to the cavity of the base to form a second receiving space, and the outer side of each cage post is conical. 本发明是种高笼型落水头，包括底座、半球型罩体及高笼盖体，其中：该底座顶面内设有凹槽，该凹槽底面具有相连通