PROBLEM TO BE SOLVED: To provide a safe all-weather birds-and-beasts damage control system that does not cause environmental destruction.SOLUTION: A plurality of supports are installed on the periphery of cultivated land 7. An equipment unit 4 is housed in an all-weather container and attached to each of the plurality of supports. Structurally, audible sound frequencies of 16 Hz to 20 KHz are provided, and the frequency within this frequency range can be freely modulated and selected. The frequency is extracted as a sound and amplified. The equipment unit 4 includes a speaker connected and integrated with the unit. The sound is effectively emitted as the sound to the outside from a sound hole provided in the container.COPYRIGHT: (C)2014,JPO&INPIT【課題】全天候型で、安全で、環境破壊を発生させない鳥獣被害防除システムを提供。【解決手段】耕作地7周辺に設置された、複数個の支柱に、全天侯型の容器に収容された、可聴音周波数16Hz~20KHzを有し、この間の周波数を自由に変調選択できる構造で、これを音声として取り出し、増幅してスピーカーに接続し一体となした機器ユニット4であって、これを容器に設けたサウンドホールから効果的に外部に、音声として発する。【選択図】図1
