Radiation detection device

1. A radiation detection device comprising:

a radiation detection panel;

a housing in which the radiation detection panel is housed;

a support member that is disposed between a surface of the radiation detection panel on a side opposite to a radiation incidence side and an inner surface of the housing;

a plurality of columnar first protruding portions that are formed on a surface of the support member on an opposite side to a surface of the support member on a side of the radiation detection panel; and

a second protruding portion that is formed at other region of the surface of the support member on the opposite side than regions of the surface of the support member on the opposite side at which the first protruding portions are formed, so as to extend along the surface of the support member on the opposite side and that has a length in a direction, which is perpendicular to the surface of the support member on the side of the radiation detection panel, shorter than the first protruding portions,

wherein three or more of the first protruding portions are provided, and

assuming that n is a natural number of 3 or more, the second protruding portion is formed along each side of a polygon in a case where positions of the n adjacent first protruding portions among the three or more first protruding portions are at least some of apices of the polygon.

2. The radiation detection device according to claim 1 ,

wherein the second protruding portion is in contact with at least one of the first protruding portions.

3. The radiation detection device according to claim 2 ,

wherein the second protruding portion connects the two adjacent first protruding portions to each other.

4. The radiation detection device according to claim 2 ,

wherein the second protruding portion includes a notched portion at a part of a top surface of the second protruding portion.

5. The radiation detection device according to claim 2 ,

wherein at least one of the first protruding portions has a tapered shape in which a width of the first protruding portion in a direction, which is parallel to the surface of the support member on the side of the radiation detection panel, increases from a distal end of the first protruding portion toward a proximal end of the first protruding portion.

6. The radiation detection device according to claim 2 ,

wherein the second protruding portion has a recessed shape that is recessed toward a side of the support member.

7. The radiation detection device according to claim 1 ,

wherein the second protruding portion connects the two adjacent first protruding portions to each other.

8. The radiation detection device according to claim 1 ,

wherein the n is 3, and the polygon is a triangle.

9. The radiation detection device according to claim 1 ,

wherein the n is 3, and the polygon is a hexagon.

10. The radiation detection device according to claim 1 ,

wherein the second protruding portion includes a notched portion at a part of a top surface of the second protruding portion.

11. The radiation detection device according to claim 1 ,

wherein at least one of the first protruding portions has a tapered shape in which a width of the first protruding portion in a direction, which is parallel to the surface of the support member on the side of the radiation detection panel, increases from a distal end of the first protruding portion toward a proximal end of the first protruding portion.

12. The radiation detection device according to claim 1 ,

wherein the second protruding portion has a recessed shape that is recessed toward a side of the support member.

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

a circuit board or a power supply unit that is disposed between the inner surface of the housing and the second protruding portion.

14. The radiation detection device according to claim 1 ,

wherein outer surfaces of the housing include a first surface on the radiation incidence side, a second surface that is a surface on a side opposite to the first surface and that is located at an inner side than the first surface as viewed from a direction perpendicular to the first surface, and a curved surface connecting the second surface and the first surface to each other, and

the first protruding portions and the second protruding portion are formed in a range overlapping the second surface as viewed from the direction perpendicular to the first surface.

15. The radiation detection device comprising,

a radiation detection panel;

a housing in which the radiation detection panel is housed;

a support member that is disposed between a surface of the radiation detection panel on a side opposite to a radiation incidence side and an inner surface of the housing;

a plurality of columnar first protruding portions that are formed on a surface of the support member on an opposite side to a surface of the support member on a side of the radiation detection panel; and

a second protruding portion that is formed at other region of the surface of the support member on the opposite side than regions of the surface of the support member on the opposite side at which the first protruding portions are formed, so as to extend along the surface of the support member on the opposite side and that has a length in a direction, which is perpendicular to the surface of the support member on the side of the radiation detection panel, shorter than the first protruding portions,

wherein four or more of the first protruding portions are provided, and

the second protruding portion is formed along a diagonal line of a quadrangle having four adjacent first protruding portions, among the four or more first protruding portions, as apices.

16. The radiation detection device according to claim 15 ,

wherein the second protruding portion is in contact with at least one of the first protruding portions.