Radiation detection device

1. A radiation detection device comprising:

a radiation detection panel;

a supporting member having a first surface and a second surface being opposite to the first surface, wherein the radiation detection panel is provided at a side of the first surface;

first and second power supply units that supply operating electric power of the radiation detection panel;

a housing that accommodates the radiation detection panel, the supporting member, and the first power supply unit; and

a holder portion which is provided on the second surface of the supporting member and to which the second power supply unit is detachably attached,

wherein the holder portion comprises a pair of frames that protrude toward a bottom of the housing which faces the second surface of the supporting member and a concave portion that is provided between the pair of frames and is capable of accommodating the second power supply unit, and

the bottom of the housing has an opening portion through which the concave portion is exposed to an outside of the housing.

2. The radiation detection device according to claim 1 , further comprising:

a sealing member that is interposed between the bottom of the housing and the holder portion along an edge of the opening portion.

3. The radiation detection device according to claim 1 , further comprising:

a plurality of spacers that are provided on the second surface of the supporting member separately from the holder portion so that the plurality of spacers contact with the bottom of the housing.

4. The radiation detection device according to claim 2 , further comprising:

a plurality of spacers that are provided on the second surface of the supporting member separately from the holder portion so that the plurality of spacers contact with the bottom of the housing.

5. The radiation detection device according to claim 1 ,

wherein ribs that protrude in a direction in which the pair of frames face each other are provided at leading ends of the pair of frames.

6. The radiation detection device according to claim 2 ,

wherein ribs that protrude in a direction in which the pair of frames face each other are provided at leading ends of the pair of frames.

7. The radiation detection device according to claim 3 ,

wherein ribs that protrude in a direction in which the pair of frames face each other are provided at leading ends of the pair of frames.

8. The radiation detection device according to claim 1 ,

wherein the concave portion comprises an accommodation portion that accommodates the second power supply unit and a slope portion that is provided so as to be adjacent to at least one of both sides of the accommodation portion in a direction in which the pair of frames extend, and

the slope portion becomes closer to the second surface as becoming closer to the accommodation portion in the direction in which the pair of frames extend.

9. The radiation detection device according to claim 2 ,

wherein the concave portion comprises an accommodation portion that accommodates the second power supply unit and a slope portion that is provided so as to be adjacent to at least one of both sides of the accommodation portion in a direction in which the pair of frames extend, and

the slope portion becomes closer to the second surface as becoming closer to the accommodation portion in the direction in which the pair of frames extend.

10. The radiation detection device according to claim 3 ,

wherein the concave portion comprises an accommodation portion that accommodates the second power supply unit and a slope portion that is provided so as to be adjacent to at least one of both sides of the accommodation portion in a direction in which the pair of frames extend, and

the slope portion becomes closer to the second surface as becoming closer to the accommodation portion in the direction in which the pair of frames extend.

11. The radiation detection device according to claim 8 ,

wherein the slope portion has a step portion that is provided between an end opposite to the accommodation portion and the bottom of the housing and is capable of being grasped.

12. The radiation detection device according to claim 9 ,

wherein the slope portion has a step portion that is provided between an end opposite to the accommodation portion and the bottom of the housing and is capable of being grasped.

13. The radiation detection device according to claim 10 ,

wherein the slope portion has a step portion that is provided between an end opposite to the accommodation portion and the bottom of the housing and is capable of being grasped.

14. The radiation detection device according to claim 1 ,

wherein the holder portion is formed integrally with the supporting member.

15. The radiation detection device according to claim 2 ,

wherein the holder portion is formed integrally with the supporting member.

16. The radiation detection device according to claim 3 ,

wherein the holder portion is formed integrally with the supporting member.

17. The radiation detection device according to claim 1 ,

wherein the holder portion is formed separately from the supporting member and is bonded to the second surface, and

a whole area of a surface of the holder portion which is bonded to the second surface is bonded to the second surface.

18. The radiation detection device according to claim 2 ,

wherein the holder portion is formed separately from the supporting member and is bonded to the second surface, and

a whole area of a surface of the holder portion which is bonded to the second surface is bonded to the second surface.

19. The radiation detection device according to claim 3 ,

wherein the holder portion is formed separately from the supporting member and is bonded to the second surface, and

a whole area of a surface of the holder portion which is bonded to the second surface is bonded to the second surface.