PROBLEM TO BE SOLVED: To provide a radiographic image capturing apparatus and a heat dissipation method capable of improving an effect of dissipating heat inside a housing unit which houses a radiation detector and a control unit therein.SOLUTION: A radiographic image capturing apparatus 10 includes: a radiation detector 40 in which a plurality of pixels 44 for accumulating electric charges corresponding to emitted radiation R are arranged； an FPGA 62 serving as a control unit 60 that controls the radiation detector 40； a radiation emission unit 14 that emits the radiation R； a housing unit 12 in which the radiation detector 40 and the FPGA 62 are housed and which has a heat dissipation port 90 and a radiation detection surface 16 irradiated with the radiation R emitted from the radiation emission unit 14； and a C arm 20 that supports the radiation emission unit 14 at a position facing the radiation detection surface 16 and has a hollow portion 25 forming a space communicating with the inside of the housing unit 12 through the heat dissipation port 90.SELECTED DRAWING: Figure 1【課題】放射線検出器及び制御部を収納する収納部の内部の熱の放熱効果を向上させることができる放射線画像撮影装置及び放熱方法を提供する。【解決手段】放射線画像撮影装置１０は、照射された放射線Ｒに応じた電荷を蓄積する複数の画素４４が配置された放射線検出器４０と、放射線検出器４０を制御する制御部６０であるＦＰＧＡ６２と、放射線Ｒを射出する放射線照射部１４と、放射線検出器４０及びＦＰＧＡ６２を収納し、放射線照射部１４から射出された放射線Ｒが照射される放射線検出面１６及び放熱口９０を有する収納部１２と、放射線検出面１６に対向する位置に放射線照射部１４を支持し、放熱口９０を介して収納部１２の内部と連続した空間を形成する空洞部２５を有するＣアーム２０と、を備える。【選択図】図１
