To provide an apparatus for repelling a harmful animal with a rational structure, that is capable of effectively repelling the harmful animal by making a loud explosion sound and smoke of gunpowder by impacting and exploding the gunpowder used for a warning gun. 号砲用の火薬を打撃・爆裂させて大きな爆音と火薬の硝煙を発生させることで有害動物を効果的に撃退できる合理的な構造の有害動物の撃退装置を提供すること。 - 特許庁