PROBLEM TO BE SOLVED: To provide a double coffin capable of being repeatedly used, in which a corpse is hard to be damaged even if dry ice is not used and even if it is a summertime and a rainy season, and also CO2 is not generated.SOLUTION: A double coffin includes an elongated box-shaped outer coffin and an inner coffin capable of being contained in the outer coffin. The outer coffin has an opening of an area capable of putting in/out the inner coffin upward and includes a lid capable of opening and closing the opening. An inner coffin outlet of a size capable of putting in/out the inner coffin is present in the longitudinal direction head side surface. A guide for facilitating the movement of the inner coffin contained in the outer coffin is present at least in the bottom surface of the outer coffin. Heat insulation sheets are affixed to any one of or two or more surfaces of the inner face and the bottom surface of the outer coffin and the inner face and the outer face of the inner coffin. The outer coffin has strength capable of being repeatedly used and has decoration given on the surface. The inner coffin is made by materials capable of being burned up. A farewell window capable of looking at an internal corpse from the outside is provided in both of the outer coffin and the inner coffin or in the inner coffin.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2018,JPO&INPIT【課題】 繰り返し使用でき、ドライアイスを使用しなくても、夏場や梅雨時であっても遺体が傷みにくく、CO2が発生しない二重棺を提供する。【解決手段】 細長箱状の外棺と、外棺内に収容可能は内棺を備えた二重棺であり、外棺は上方に内棺を出し入れ可能な広さの開口部があり、その開口部を開閉可能な蓋を備え、長手方向頭部側面に内棺を出し入れ可能なサイズの内棺出口があり、外棺の少なくとも底面には外棺内に収容した内棺の移動を容易にするガイドがあり、外棺の内面と底面、内棺の内面と外面のいずれか一面又は二以上の面に断熱シートが貼られており、外棺は繰り返し使用可能な強度であり、表面に装飾が施されたものであり、内棺は焼却可能な材質製であり、外棺と内棺の双方又は内棺に内部の遺体を外から見ることのできるお別れ窓を設けてある。【選択図】 図2
