PROBLEM TO BE SOLVED: To provide a windmill type harmful bird/insect pest come-flying prevention device which avoids birds to prevent come-flying thereof by being able to rotate to diffuse light in all directions even if a wind blows from any direction, and can be easily and certainly assembled.SOLUTION: A windmill type harmful bird/insect pest come-flying prevention device includes a light reflective windmill 4 capable of rotating around a vertical axis through a rotary cylinder member 3 through which a support shaft member 2 is inserted. The rotary cylinder member 3 includes upper and lower cylinder members 60, 61 whose end portions 57, 59 are engaged and integrated with each other. An impeller 81 constituting the windmill 4 uses one impeller formation sheet, and is configured by forming a plurality of vane pieces 89 by appropriately making cuts in the impeller formation sheet, bending the respective vane pieces 89, and lapping end portions thereof. The vane piece 89 is formed with a vertical non-circular communication insertion hole, and a non-circular shaft part 84 between vertical pulling-out prevention flange parts 66, 75 of the rotary cylinder member 3 is nearly closely inserted through the communication insertion hole.COPYRIGHT: (C)2014,JPO&INPIT【課題】どの方向から風が吹いても回転できて全方向に光を拡散させることができ、これによって、鳥類を忌避してその飛来を防止できると共に、簡易且つ確実に組み立て得る風車型の害鳥・害虫飛来防止装置を提供する。【解決手段】支軸部材2が挿通された回転筒部材3を介して上下方向の軸線回りで回転し得る光反射性の風車4を具える。回転筒部材3は、端部分57,59相互が係合一体化される上下の筒部材60,61を具える。前記風車4を構成する羽根車81は、一枚の羽根車形成シートを用い、これに適宜切り込みを入れて複数の羽根片89を設け、各羽根片89を屈曲させその端部分を重ねて構成する。該羽根片89には、上下方向の非円形の連通挿通孔が設けられ、該連通挿通孔に、前記回転筒部材3の上下の抜け止め鍔部66,75の間をなす非円形軸部84が略密接に挿通される。【選択図】図1
