PROBLEM TO BE SOLVED: To provide an adverse animal repellent device which has high durability, which can be easily used, which uses a sound with less discomfort for a human being, which has a high repellent effect for an adverse animal and which can surely repel the adverse animal.SOLUTION: An adverse animal repellent device comprises: a motor 40 connected to a power supply 36； a weight 46 being connected to a rotary shaft 42 which is rotated by the motor 40 and swinging by rotation of the motor 40； and a sound generation cylinder member 14 which is a cylinder body surrounding the weight 46. The sound generation cylinder member 14 is integrally formed by a synthetic resin and is formed into a cylinder body whose cross section is a polygonal shape, one end part of the sound generation cylinder member 14 is opened, and the other end part thereof is closed by a plate-shaped top surface part 20. A storage cylinder member 12 that is a cylinder body having a small diameter penetrates the top surface part 20. The weight 46 collides with an inner peripheral face of the sound generation cylinder member 14 by rotation of the motor 40, for generating an impact sound of a frequency of 200 Hz-500 Hz at which the adverse animal exhibits an avoidance response.SELECTED DRAWING: Figure 1【課題】耐久性が高く容易に使用可能であり、人には不快感が少ない音を使用して、有害動物には高い忌避効果を有し確実に追い払うことができる有害動物忌避装置を提供する。【解決手段】電源３６に接続されたモータ４０と、モータ４０により回転する回転軸４２に接続されモータ４０の回転により揺動する重り４６と、重り４６を囲む筒体である音発生筒部材１４を有する。音発生筒部材１４は、合成樹脂により一体に成形されて断面が多角形の筒体に形成され、音発生筒部材１４の一方の端部は開口され、他方の端部は板状の天面部２０で閉鎖され、天面部２０には小さい径の筒体である収容筒部材１２が貫通している。モータ４０の回転により重り４６が音発生筒部材１４の内周面に衝突して、有害動物が忌避反応を示す２００Ｈｚ～５００Ｈｚの周波数の打撃音を発生する【選択図】図１
