PROBLEM TO BE SOLVED: To provide a radiation imaging apparatus which does not cause an increase in the weight of the whole apparatus and suppress the occurrence of image irregularity caused by heat generation in the cabinet.SOLUTION: A radiation imaging apparatus includes first heat transfer means (reflective layer 240, deposition substrate 240, or flat plate-like member 262) which thermally connect between heat generation sources of an electronic cassette 20A (power supply unit 94, driving IC 124, reading IC 128, or electronic component 132) and a radiation conversion panel 116 and transfers heat generation from the heat generation source through surface contact to the radiation conversion panel 116.COPYRIGHT: (C)2013,JPO&INPIT【課題】装置全体の重量を増加させることなく、且つ、筐体内部での発熱に起因する画像ムラの発生を抑制可能な放射線撮像装置を提供する。【解決手段】電子カセッテ20Aの発熱源(電源部94、駆動用IC124、読出用IC128、又は電子部品132)と放射線変換パネル116との間を熱的に結合し、放射線変換パネル116に対する面接触により、前記発熱源からの発熱を伝達する第1熱伝達手段(反射層240、蒸着基板240、又は平板状部材262)を有する。【選択図】図5
