PROBLEM TO BE SOLVED: To restore sensitivity of a radiation conversion panel without increasing the weight of the whole device.SOLUTION: A radiation imaging device (20) includes: a radiation conversion panel (116) that converts a radiation ray (16) into a radiation image power supply units (270, 272) that supply power to the radiation conversion panel (116) and is chargeable from outside and a housing (29) that accommodates the radiation conversion panel (116) and the power supply units (270, 272). The radiation conversion panel (116) is heated by the heat generated during charging of the power supply units (270, 272).COPYRIGHT: (C)2012,JPO&INPIT【課題】装置全体の重量を増加させることなく、放射線変換パネルの感度を回復させる。【解決手段】放射線撮像装置(20)は、放射線(16)を放射線画像に変換する放射線変換パネル(116)と、前記放射線変換パネル(116)に電力を供給し且つ外部から充電可能な電源部(270、272)と、前記放射線変換パネル(116)及び前記電源部(270、272)を収容する筐体(29)とを有し、前記電源部(270、272)の充電時の発熱により前記放射線変換パネル(116)が加熱される。【選択図】図4