RADIATION DETECTOR

PROBLEM TO BE SOLVED: To enhance the strength of a housing.SOLUTION: A radiation detector 30 comprises: a housing 22; a radiation detection panel 21; a support plate 20; and a circuit board 23. The housing 22 is substantially rectangular and has an incidence surface cover 24, side covers 27 for covering side surfaces orthogonal to the incidence surface cover 24, and corner covers. The radiation detection panel 21, the support plate 20, and the circuit board 23 are housed in the housing 22. The side covers 27 and the cover covers are integrally provided with fixing parts 25 protruded in parallel with the incidence surface cover 24. The radiation detection panel 21 has a shape of a flat plate and detects radiation incident through the incidence surface cover 24. The support plate 20 is fixed to the side covers 27 or the corner covers with the fixing parts 25 to support the radiation detection panel 21. The circuit board 23 is mounted with a drive circuit of the radiation detection panel 21.