High-voltage transmission overhead line bird damage prevention device

The invention relates to a bird damage prevention device, in particular to a high-voltage transmission overhead line bird damage prevention device, the key point of structure is that: the device comprises a triangular prism and a top triangular board as well as a bottom triangular board, wherein the triangular prism is connected with the top triangular board and the bottom triangular board to forma closed triangular box body, and at least one of the angles formed by the triangular prism is consistent with the angle of a space thereof for arranging cross arm diagonal. The invention provides the high-voltage transmission overhead line bird damage prevention device which is a closed triangular box body, is arranged at the position of the space for arranging the cross arm diagonal of the high-voltage transmission overhead line tower, occupies the favorite space of the bird for nesting, and effectively controls tripping operation failure rate caused by bird damage, thus guaranteeing the safe and reliable operation