Patent ID: 8872121

Claim:
A radiation imaging apparatus comprising: a radiation detection unit housed within the radiation imaging apparatus and configured to detect radiation; a first cooling fan configured to cool a first heat generation portion of the radiation detection unit by blowing a cooling medium to the first heat generation portion; a second cooling fan configured to cool a second heat generation portion of the radiation detection unit by blowing the cooling medium to the second heat generation portion, an amount of heat generated by the second heat generation portion being larger than an amount of heat generated by the first heat generation portion; and a discharge port formed in a position nearer to the second heat generation portion than to the first heat generation portion and configured to discharge the cooling medium which received heat from the first heat generation portion and the cooling medium which received heat from the second heat generation portion, wherein the first cooling fan and the second cooling fan are disposed on a rear surface of the radiation imaging apparatus, the rear surface being opposite to a front surface on a radiation-receiving side of the radiation imaging apparatus, and wherein the discharge port is formed either on a side surface which joins the front surface to the rear surface or on the rear surface of the radiation imaging apparatus.