PROBLEM TO BE SOLVED: To maintain good sealability inside the housing.SOLUTION: A portable radiation imaging device 1 has a sensor panel SP formed by a plurality of radiation detection elements arranged two-dimensionally and a casing 40 housing the sensor panel SP, and the casing 40 has a front member 41 on the side where radiation is incident and a back member 42 opposite to the front member 41. A seal member 63 is provided between the front member 41 and the back member 42, and the minimum value of the ratio of the width to the thickness after compression in the cross section of the corner portion 631 of the sealing material 63 positioned at the corner portion of the housing 40 is set to be larger than the minimum value of the ratio of the width to the thickness after compression in the cross section of the portion 632 other than the corner portion of the sealing material 63.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2018,JPO&INPIT【課題】筐体内のシール性を良好に維持する。【解決手段】複数の放射線検出素子が二次元状に配列されたセンサーパネルSPと、センサーパネルSPが収納された筐体40とを備え、筐体40が、放射線が入射する側のフロント部材41と、当該フロント部材41とは反対側のバック部材42とを有する可搬型放射線画像撮影装置1であって、フロント部材41とバック部材42との間にシール材63が設けられ、筐体40の角部に位置するシール材63の角部631の断面における圧縮後厚さに対する幅の比率の最小値を、シール材63の角部以外の部分632の断面における圧縮後厚さに対する幅の比率の最小値よりも大きくした。【選択図】図4
