< Topic >The mite the fact that it invades inside the fence via the drain from outside the cross cut prevention fence is prevented, the epoch-making mite invasion prevention device which does not have the fact that at the same time it can plug the drain is offered.SolutionsIn lower part copper frame 6 of cross cut prevention fence 1 the provide on the side doing time motive structure 5, locking with unity band, 7 in order to install, it constitutes, in this time motive structure 5 putting in place interval, common facilities doing, time motion it provides multiple invasion prevention boards 8 unrestrictedly in top and bottom direction. The bottom directing to the downstream side of drain, 2 being the form which buckles, when it hangs inside drain 2 the bottom earth on cartridge head of drain 2, time motion it does invasion prevention board 8, to downstream direction of drain 2, but time motion it does not do to high-level direction.< Choice figure >Drawing 1【課題】小動物が立入防止柵外から排水溝を通じて柵内に侵入することを防止し、且つ排水溝を詰まらせることのない画期的な小動物侵入防止装置を提供する。【解決手段】回動機構5を立入防止柵1の下部胴縁6に沿設して結束バンド7で固定して取り付けるように構成し、この回動機構5に複数の侵入防止板8を間隔を置いて並設して、上下方向に回動自在に設ける。侵入防止板8は、下端部が排水溝2の下流側に向けて湾曲した形状であって、排水溝2内に垂下した状態では下端部が排水溝2の底部に接地して排水溝2の下流方向には回動するが、上流方向には回動しない。【選択図】図1
