SHIELDING STRUCTURE

To provide a shielding structure that can ensure high airtightness with a simple configuration.SOLUTION: A door 10 according to an embodiment of a shielding structure includes a roller 11 laid horizontally, a rectangular sheet 12 whose upper end portion is connected to a rotation shaft 11a of the roller 11 and is wound around the roller 11 and whose lower end portion is hung down, and a contact member 13 provided on a floor surface F so that the lower end portion of the sheet 12 can be contacted. At the lower end portion of the sheet 12, a tubular portion 12p in which the sheet 12 is folded back is formed. A groove-shaped portion 13g into which the lower side of the tubular portion 12p is inserted is formed on the upper surface of the contact member 13. In the tubular portion 12p, when the lower end portion of the sheet 12 comes into contact with the contact member 13, three tangents L1 to L3 with the groove-shaped portion 13g are formed.SELECTED DRAWING: Figure 1 【課題】簡易な構成で高い気密性を確保することが可能となる遮蔽構造を提供する。【解決手段】遮蔽構造の一実施形態に係る扉１０は、水平に架け渡されたローラ１１と、上端部がローラ１１の回動軸１１ａに連結されてローラ１１に巻回され、下端部が垂下された矩形のシート１２と、シート１２の下端部が当接可能に床面Ｆに設けられる当接部材１３と、を備え、シート１２の下端部には、シート１２が折り返された筒状部１２ｐが形成され、当接部材１３の上面には、筒状部１２ｐの下側が挿入される溝状部１３ｇが形成され、筒状部１２ｐは、シート１２の下端部が当接部材１３に当接した際に、溝状部１３ｇとの三本の接線Ｌ１〜Ｌ３が形成される。【選択図】図１