Radiographic imaging device

Abstract

To provide a radiographic imaging device which prevents air trapping and ensures sufficient adhesion when attaching a radiation detection unit to a support.SOLUTION: A radiographic imaging device 100 is provided, comprising a radiation detection unit 3 for detecting radiation, a support body 4 for supporting the radiation detection unit 3, a housing 110 for accommodating the radiation detection unit 3 and the support body 4, and an attachment member (first attachment member 6) for securing the radiation detection unit 3 to at least the support body. The attachment member has an air passage (air passage 6a) provided only on one side.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a radiographic imaging device. [Background technology]

[0002] In recent years, portable (also called cassette type) radiographic imaging devices that can be separated from an imaging stand and carried around have been developed and put into practical use. Because such radiographic imaging devices are panel-shaped, they are sometimes called FPDs (Flat Panel Detectors). The FPD includes a radiation detection unit that detects radiation, a support body that supports the radiation detection unit, and the like. The radiation detection unit and the support body are fixed together with an adhesive or with a pressure-sensitive adhesive tape such as double-sided tape.

[0003] The radiation detection unit and the support are flat plate-like members with relatively large areas. Therefore, when the radiation detection unit and the support are bonded together with double-sided tape, two flat plate-like members with relatively large areas are bonded together. As a result, air may remain (air pockets may form) between the adhesive of the double-sided tape and the radiation detection unit, or between the adhesive of the double-sided tape and the support. The volume of the air pockets decreases when a load is applied to the FPD, and returns to normal when the load is removed. In this case, repeated contact and separation between the adhesive of the double-sided tape and the radiation detection unit, or between the adhesive of the double-sided tape and the support, can cause charging. This generated charge can adversely affect the images generated by the FPD. As the FPD is used, the air pocket may move due to the load and / or vibration applied to the FPD, which may cause the adhesive of the double-sided tape to peel off from the area around the air pocket.If the double-sided tape peels off and the radiation detection unit is no longer supported by the support, the radiation detection unit may be damaged or deformed.

[0004] To address the above problem, a technology has been disclosed in which a radiation detection unit is fixed to a support using the following double-sided tape (for example, Patent Document 1). Specifically, this double-sided tape has adhesives arranged in a matrix on both sides, so that when the tape is attached, air can escape through gaps (air passages) between the adhesives, preventing air accumulation. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] International Publication No. 2011 / 043133 Summary of the Invention [Problem to be solved by the invention]

[0006] However, conventional double-sided tapes have adhesives arranged in a matrix on both sides, resulting in a small amount of adhesive per unit area due to the large number of air passages. Patent Document 1 describes examples of mesh numbers, where the number of irregularities (air passages) per inch is the mesh number, with mesh numbers of 20, 48, or 65 being used. If the adhesive strength of the double-sided tape is low, the adhesive on the double-sided tape may peel off if the FPD is subjected to external impact and / or vibration during use. When the support is made of a highly rigid material such as metal, warping that occurs during the support's manufacture creates gaps between the radiation detection unit and the support. This creates a force that causes the radiation detection unit and the support to peel off after they are bonded together. Therefore, if the adhesive strength of the double-sided tape is low, the adhesive on the double-sided tape is more likely to peel off. There are FPDs with a structure in which the fixed radiation detection unit and support are made into an internal module, and the internal module is fixed to the inner surface of the FPD housing with double-sided tape, thereby suppressing movement due to disturbances and preventing damage to the components of the internal module. In the case of this FPD, if the adhesive strength of the double-sided tape that attaches the internal module to the housing is weak, the internal module may peel off from the housing and be damaged by disturbances. One method to increase adhesive strength is to improve the adhesive of double-sided tape, but because the adhesive is in a matrix form, there is a limit to how much adhesive strength can be improved. Because adhesives with improved adhesive strength are special, they are unsuitable for use in commercial products in terms of cost, durability, etc.

[0007] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a radiographic imaging device that can prevent air pockets from forming when attaching a radiation detection unit to a support and ensure sufficient adhesive strength. [Means for solving the problem]

[0008] In order to solve the above problem, the radiographic imaging device of the invention described in claim 1 comprises: a radiation detection unit that detects radiation; a support for supporting the radiation detection unit; a housing that houses the radiation detection unit and the support; an attachment member that fixes the radiation detection unit to at least the support; Equipped with The attachment member has an air passage formed on only one side thereof.

[0009] The invention described in claim 2 is the radiation image capturing apparatus described in claim 1, The internal module including the radiation detection unit and the support body is fixed to the housing by the adhesive member.

[0010] The invention described in claim 3 is the radiation image capturing apparatus described in claim 1 or 2, The pitch of the air passages is 2.5 mm to 25 mm.

[0011] The invention described in claim 4 is the radiation image capturing apparatus described in claim 3, The pitch of the air passages is 5 mm to 20 mm.

[0012] The invention described in claim 5 is the radiation image capturing apparatus described in claim 1, The radiation detection unit has a flexible substrate and a semiconductor element formed on an imaging surface of the substrate.

[0013] The invention described in claim 6 is the radiation image capturing apparatus described in claim 1, The support is made of metal.

[0014] The invention described in claim 7 is the radiation image capturing apparatus described in claim 1, The support is made of a foam.

[0015] The invention described in claim 8 is the radiation image capturing apparatus described in claim 1 or 2, The attachment member has a laminated structure.

[0016] The invention described in claim 9 is the radiation image capturing apparatus described in claim 8, The attachment member includes a conductive layer.

[0017] The invention described in claim 10 is the radiation image capturing apparatus described in claim 1 or 2, The attachment member includes a double-sided tape.

[0018] The invention described in claim 11 is the radiation image capturing apparatus described in claim 1 or 2, The attachment member is releasable from the attached member. [Effects of the Invention]

[0019] According to the present invention, when attaching the radiation detection unit to the support, air entrapment can be prevented and sufficient adhesive strength can be ensured. [Brief explanation of the drawings]

[0020] [Figure 1]1 is a perspective view of a front and a part of a side of a radiographic image capturing apparatus according to an embodiment of the present invention; [Figure 2] 2 is a schematic cross-sectional view of the radiographic image capturing apparatus of FIG. 1 taken along line II-II. [Figure 3A] FIG. 2 is a rear view of the radiation image capturing device. [Figure 3B] FIG. 2 is a rear view of the radiation image capturing device. [Figure 3C] FIG. 4 is a schematic cross-sectional view taken along line CC in FIGS. 3A and 3B. [Figure 4] 2 is a diagram showing the configuration of a radiation detection unit in a cross section taken along line II-II of the radiographic image capturing apparatus of FIG. 1. FIG. [Figure 5] FIG. 2 is a plan view showing the configuration of the surface of an element substrate. [Figure 6A] 6 is a schematic cross-sectional view of the radiographic imaging device of FIG. 1 taken along line VI-VI when no radio wave absorbing material is provided. [Figure 6B] 6 is a schematic cross-sectional view taken along line VI-VI of the radiographic imaging device of FIG. 1 when a radio wave absorbing material is provided. FIG. [Figure 7] FIG. 7 is a partial cross-sectional view VII of FIG. [Figure 8] FIG. 10 is a schematic view of the first ventilation adhesive material as viewed from the negative Z-axis direction side. [Figure 9A] 10 is a diagram showing an example of how the radiation detection unit and the support are attached together using a first attaching member. FIG. [Figure 9B] 10 is a diagram showing an example of how the radiation detection unit and the support are attached together using a first attaching member. FIG. [Figure 10] FIG. 10 is a schematic view of a second ventilation adhesive material as viewed from the positive Z-axis direction. [Figure 11A] 10 is a diagram showing an example of how the radiation detection unit and the front surface unit are attached together using a second attachment member. FIG. [Figure 11B] 10 is a diagram showing an example of how the radiation detection unit and the front surface unit are attached together using a second attachment member. FIG. [Figure 12A] FIG. 10 is a side cross-sectional view showing an example of how the internal module is peeled off from the housing. [Figure 12B]FIG. 10 is a side cross-sectional view showing an example of how the internal module is peeled off from the housing. [Figure 13] FIG. 10 shows an expanded peeling aid member. [Figure 14A] FIG. [Figure 14B] FIG. 10 is a diagram showing an inclined portion and an elastic body. [Figure 14C] FIG. 10 is a diagram showing a recess and an elastic body. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to those shown in the drawings.

[0022] The schematic configuration of a radiographic image capturing apparatus 100 according to this embodiment will be described. The radiographic image capturing device 100 generates a radiographic image according to the received radiation.

[0023] [1. Housing] The radiographic imaging device 100 includes a housing 110 that is rectangular in plan view. Fig. 1 is a perspective view of a front surface 110a and a portion of a side surface 110c of the housing 110, on which radiation is incident. The surface of the housing 110 opposite the front surface 110a is referred to as a back surface 110b. In FIG. 1, the X-axis direction is parallel to the short sides of the housing 110. The Y-axis direction is parallel to the long sides of the housing 110. The Z-axis direction is the thickness direction of the housing 110. The arrows on each axis are positive (plus) directions. That is, in the X-axis direction, the side where the connector 51, antenna 56, and operation unit 57 (described later) are provided is the negative (minus) direction. In the Y-axis direction, the direction from the antenna 56 toward the connector 51 is the positive (positive) direction. In the Z-axis direction, the direction from the rear surface 110b toward the front surface 110a is the positive (positive) direction.

[0024] As shown in FIG. 1, a side surface 110c of the housing 110 includes a connector 51, an antenna 56, and an operation unit 57. The connector 51 supplies power from the outside via a wired connection and communicates with the outside. The antenna 56 performs wireless communication with an external device. The operation unit 57 includes switches such as a power switch and a changeover switch.

[0025] FIG. 2 is a schematic cross-sectional view of the radiographic image capturing apparatus 100 shown in FIG. 1 taken along line II-II. 2, the housing 110 is in the form of a rectangular panel and includes a box body 1 and a lid body 2. The housing 110 houses an internal module 120.

[0026] The box 1 is made of a material that transmits radiation. For example, the material of the box 1 is carbon fiber reinforced plastic (CFRP) containing short fibers. Carbon fiber reinforced plastic has high radiation transmittance, so radiation that has passed through the subject reaches the internal module 120 without attenuation along the way. This makes it possible to improve the image quality of the radiographic image compared to when the box 1 is made of other materials. The lid body 2 may be made of the same material as the box body 1, but may also be made of a material such as aluminum, magnesium, or an alloy thereof, which is lightweight and has excellent electrical and thermal conductivity.

[0027] [1-1. Box body] 2, the box 1 has a front surface 11 and a side surface 12. The front surface 11 and the side surface 12 are integrally formed. Alternatively, the front surface 11 and the side surface 12 may be separate members.

[0028] (1-1-1.Front part) The front surface part 11 extends parallel to the radiation detection part 3 described below. The outer surface of the front surface part 11 is the radiation incident surface 110a (front surface) of the radiographic image capturing device 100 (housing 110). The front surface part 11 is formed in the shape of a rectangular plate. On the radiation incident surface 110a, the range of the effective image area of ​​the radiation detection unit 3 (the area where a plurality of photoelectric conversion elements 31f (see FIG. 5) are arranged) is indicated by a frame (not shown).

[0029] (1-1-2. Side part) The side surface portion 12 extends from the peripheral edge of the front surface portion 11 in a direction perpendicular to the radiation incident surface 110a and in a direction toward the rear surface portion 21 (negative direction of the Z axis). The outer surface of the side surface portion 12 is the side surface 110c of the radiographic imaging device 100 (housing 110).

[0030] [1-2. Lid] As shown in Fig. 2, the lid body 2 has a rear surface portion 21. The entire lid body 2 according to this embodiment is the rear surface portion 21. The rear surface portion 21 faces the front surface portion 11 of the box body 1 across the internal module 120 and extends parallel to the front surface portion 11. The outer surface of the rear surface portion 21 is the rear surface 110b of the radiographic imaging device 100 (housing 110).

[0031] The cover 2 (rear portion 21) abuts against the side surface portion 12 of the box body 1 and is attached to the side surface portion 12. In this way, the side surface portion 12 connects the front surface portion 11 and the rear surface portion 21. The lid 2 according to this embodiment is fastened to the box 1 with screws. Therefore, when repairing or maintaining the radiographic imaging device 100, the rear surface 21 can be separated from the front surface 11 and the side surface 12 simply by loosening and removing the screws. That is, a person performing maintenance on the radiographic imaging device 100 can easily access the internal module 120 housed within the front surface 11 and the side surface 12. When fastening the lid 2 to the box 1 with screws, the portions of the screw heads visible from the outside may be covered with a resin film, an elastic material, or the like. This prevents rust and dirt buildup on the portions of the screw heads visible from the outside due to external moisture. A waterproof and dustproof structure may be achieved by sandwiching a packing such as an O-ring or waterproof cushioning material between the lid 2 and the box 1 and screwing or gluing them together. Preventing moisture from penetrating the interior of the housing 110 prevents moisture from affecting the radiation detection unit 3 and the electrical components 5 (described below). When the lid 2 and the box 1 are glued together, no packing is needed between the lid 2 and the box 1, and waterproofing can be improved compared to when a packing is sandwiched between the lid 2 and the box 1 and screwed together.

[0032] Figures 3A and 3B show rear views of the radiographic image capturing device 100. Figure 3C is a schematic cross-sectional view taken along line CC in Figures 3A and 3B. The internal module 120 is omitted in Figure 3C. As shown in Fig. 3A, the rear surface portion 21 may have recesses 22 protruding inward (toward the positive direction of the Z axis) near each side of the rear surface portion 21. This can improve the bending rigidity of the cover body 2. By providing the recesses 22 near each side of the rear surface portion 21, the user can hook their fingers into the recesses 22 and hold the radiographic imaging device 100 when carrying it. This can be expected to reduce the fatigue of the user when carrying the radiographic imaging device 100 and prevent the radiographic imaging device 100 from falling. 3B, the recesses 22 may be formed in a continuous, connected circumferential shape. By providing the recesses 22 (grip portions) around the entire periphery of the back surface portion 21, the user of the radiographic imaging device 100 can easily grip the device wherever he or she is around the device, improving operability.

[0033] [1-3. Other] 2 illustrates a housing 110 (box 1) in which the side surface portion 12 is integrally formed with the front surface portion 11. However, the housing 110 may be one in which the side surface portion 12 is integral with the rear surface portion 21, or the front surface portion 11, the side surface portion 12, and the rear surface portion 21 may each be separate members.

[0034] [2. Internal Module] The internal module 120 includes a radiation detection unit 3, a support 4, electrical components 5, a vibration damping member 8, a radio wave absorbing material 9 (see FIG. 6B), and the like.

[0035] [2-1. Radiation detection unit] 2, the radiation detection unit 3 is fixed to the support body 4 by a first adhesive member 6. The radiation detection unit 3 is fixed to the front surface 11 of the housing 110 by a second adhesive member 7. In other words, the internal module 120 is fixed to the front surface 11 of the housing 110 by the second adhesive member 7. As shown in FIG. 4, the radiation detection unit 3 includes an element substrate 31 (substrate), an optical adhesive layer 32, a scintillator 33, a scintillator substrate 34, a moisture-proof layer 35, and the like.

[0036] The element substrate 31 is made of a glass substrate and has photoelectric conversion elements and the like arranged on the glass substrate. The element substrate 31 may be made of a substrate other than a glass substrate that transmits light such as radiation and ultraviolet light. For example, the element substrate 31 may be made of a flexible material. Examples of flexible materials include polyethylene naphthalate, polyethylene terephthalate (PET), polycarbonate, polyimide, polyamide, polyetherimide, aramid, polysulfone, polyethersulfone, fluororesin, polytetrafluoroethylene (PTFE), and composite materials made by mixing at least two or more of these. Of the above materials, polyimide, polyamide, polyetherimide, PTFE, or composite materials thereof are particularly preferred from the viewpoint of improving heat resistance.

[0037] 5 is a plan view showing the configuration of the surface of the element substrate 31. On the surface 31a of the element substrate 31 (i.e., the surface facing the scintillator 33 via the optical adhesive layer 32), a plurality of scanning lines 31b and a plurality of signal lines 31c are arranged so as to intersect with each other. A plurality of bias lines 31d are arranged in parallel with the plurality of signal lines 31c, and in this embodiment, each bias line 31d is bound by a single connecting wire 31e at one end on the element substrate 31. A photoelectric conversion element 31f (semiconductor element) is provided in each small region R defined by a plurality of scanning lines 31b and a plurality of signal lines 31c on the surface 31a of the element substrate 31. As described above, in this embodiment, the element substrate 31 has a plurality of photoelectric conversion elements 31f two-dimensionally arranged on its surface 31a. Each photoelectric conversion element 31f is connected to a bias line 31d, and in this embodiment, a bias voltage is applied to the photoelectric conversion elements 31f from a bias power supply (not shown) via the bias line 31d.

[0038] In this embodiment, a photodiode is used as the photoelectric conversion element 31f, which, when irradiated with radiation and output from the scintillator 33, absorbs the light energy and generates electron-hole pairs inside, thereby converting the light energy into an electric charge. One thin film transistor (Thin Film Transistor) 31g is provided for each photoelectric conversion element 31f in each small region R. The source electrode of the thin film transistor 31g is connected to one electrode of the photoelectric conversion element 31f, the drain electrode of the thin film transistor 31g is connected to the signal line 31c, and the gate electrode of the thin film transistor 31g is connected to the scanning line 31b.

[0039] 4, the optical adhesive layer 32 is provided between the element substrate 31 and the scintillator 33, and bonds the element substrate 31 and the scintillator 33 together. The optical adhesive layer 32 is made of an optical adhesive. The optical adhesive is, for example, an olefin-based, amide-based, ester-based, styrene-based, acrylic-based, urethane-based, vinyl-based, polycarbonate, or a thermoplastic resin whose main component is ABS resin (acrylonitrile-butadiene-styrene copolymer resin).

[0040] The scintillator 33 converts incident radiation into light of a different wavelength. The scintillator 33 mainly contains a phosphor. The phosphor preferably used is one in which a luminescent center substance is activated within a host material, such as thallium-activated cesium iodide (CsI:Tl), sodium-activated cesium iodide (CsI:Na), or terbium-activated gadolinium oxysulfide (GOS). The scintillator 33 is formed in the shape of a rectangular plate and is attached to a scintillator substrate 34 .

[0041] The scintillator substrate 34 is formed of a flexible material in the shape of a rectangular plate.

[0042] The moisture-proof layer 35 prevents the scintillator 33 from absorbing moisture. The moisture-proof layer 35 is formed in a sheet shape from a material that does not allow moisture to pass through, such as aluminum-deposited resin. The portion of the moisture-proof layer 35 that contacts the scintillator substrate 34 is attached to the scintillator substrate 34 via an adhesive layer (not shown), and covers the surface of the scintillator substrate 34 on the positive Z-axis direction side. The peripheral portion of the moisture-proof layer 35 is attached to the surface 31a of the element substrate 31 via an adhesive layer (not shown). As a result, the moisture-proof layer 35 covers all side surfaces (all peripheries of the side surfaces) of the scintillator substrate 34, the scintillator 33, and the optical adhesive layer 32, and part of the surface 31a of the element substrate 31.

[0043] The radiation detection unit 3 may not include the scintillator 33, but may be a direct conversion type in which an element that directly converts radiation into electric charges is disposed on the element substrate 31. The radiation detection unit 3 may have a shielding layer between it and the first attachment member 6 to shield noise generated by a circuit board 52 (described later). The shielding layer may be, for example, a thin metal film, a resin film with a metal layer formed on its surface, or a film made of a transparent conductive material (such as indium tin oxide (ITO)).

[0044] [2-2. Support] The support body 4 supports the radiation detection unit 3. This "support" does not only mean supporting the radiation detection unit 3 against the load received from the front surface portion 11 side, but also means that the radiation detection unit 3 is provided on the support body 4. 2, the support body 4 is provided between the first attachment member 6 and the back surface portion 21. This allows the support body 4 to distribute the load that the housing 110 receives from the outside, thereby preventing the radiation detection unit 3 from bending.

[0045] The support body 4 has a rectangular flat plate shape and is made of a lightweight, relatively strong magnesium alloy. The support body 4 may be made of a light metal such as aluminum or an alloy thereof. The support body 4 may also be made of a carbon fiber reinforced plastic (CFRP) containing long or short fibers.

[0046] As shown in FIG. 2, the support 4 has a surface portion 4a and a plurality of leg portions 4b.

[0047] (2-2-1. Planar part) The planar portion 4a has a predetermined thickness in the Z-axis direction, and is provided without any gaps along the surface of the back portion 21 side of the first attachment member 6. This allows the support body 4 to further distribute the load received by the housing 110 from the outside, thereby further suppressing bending of the radiation detection unit 3. One surface of the planar portion 4a contacts the first attachment member 6, and the other surface contacts the battery 54 or the like. Hereinafter, the surface of the planar portion 4a that contacts the first attachment member 6 will be referred to as the support surface 41a. The support surface 41a is the same size as the radiation detection unit 3 or slightly larger than the radiation detection unit 3. Therefore, the planar portion 4a can support the entire radiation detection unit 3. A gap of, for example, 1 mm or more is provided between the side surface of the planar portion 4a in the Y-axis direction and the side surface portion 12, and between the side surface of the planar portion 4a in the X-axis direction and the side surface portion 12. This makes it possible to prevent external impacts from being transmitted to the internal module 120. An opposite surface 41b of the planar portion 4a, which is the surface opposite to the support surface 41a, is provided with a female screw (not shown) for attaching a circuit board 52 or the like. If the material of the support body 4 is resin, the female screw must be formed using an insert or the like. On the other hand, if the material of the support body 4 is metal, the female screw can be formed directly on the planar portion 4a, which makes it easy to manufacture the radiographic image capturing device 100.

[0048] (2-2-2. Leg-shaped part) 2, the leg portion 4b is provided so as to protrude from the opposite surface 41b of the planar portion 4a until it abuts against the back surface portion 21. This allows the support body 4 to be supported and the load from the front surface portion 11 side of the radiographic image capturing device 100 to be supported. When a load is applied to the radiographic imaging device 100 from the front surface 11, if the distance between the leg portions 4b is long, the planar portion 4a of the support body 4 will bend under the load, along with the radiation detection unit 3. This may adversely affect the images generated by the radiographic imaging device 100, or may damage the radiation detection unit 3. Measurements by the inventors have shown that when a person stands on the radiographic imaging device 100 with one foot, a load is applied to the radiation detection unit 3 within a diameter range of approximately 60 mm. Therefore, by setting the distance between the leg portions 4b to 50 to 70 mm, or less, it is possible to reduce the bending of the planar portion 4a of the support body 4.

[0049] (2-2-3. Support and other) As shown in FIG. 2, the recess 4c is formed by the planar portion 4a and the plurality of leg portions 4b. The recesses 4c each accommodate a circuit board 52, a battery 54, etc. The width, depth, and height (width in the Z-axis direction) of the recess 4c are large enough to accommodate the circuit board 52, the battery 54, etc. The depth of the recess 4c is larger than the width in the Z-axis direction of the circuit board 52 including the elements on the circuit board 52. This prevents the circuit board 52 and the elements on the circuit board 52 from coming into contact with the rear surface portion 21 even if a load is applied to the radiographic imaging device 100 and the support body 4 is deformed. This prevents the signal values ​​of the circuit board 52 from being adversely affected and the circuit board 52 from being damaged.

[0050] The material of the support body 4 may be a foam, which allows the radiographic image capturing apparatus 100 to be made even lighter. The foam is made of a resin such as polyethylene, polypropylene, modified polyphenylene ether, polystyrene, etc. The foam preferably has an expansion ratio of 30 or less, which can improve the strength of the support 4 against a load. Even when the material of the support body 4 is a foam, a gap of, for example, 1 mm or more is provided between the side surface of the planar portion 4a in the Y-axis direction and the side surface portion 12, and between the side surface of the planar portion 4a in the X-axis direction and the side surface portion 12. This prevents external impacts from being transmitted to the internal module 120, thereby preventing damage to the support body 4. An attachment member having a female screw on the opposite surface 41b of the support body 4 formed from a foam is molded integrally with the support body 4. The circuit board 52, battery 54, etc. are attached to the support body 4 by screwing the circuit board 52, battery 54, etc. onto the female screw. Alternatively, the circuit board 52, battery 54, etc. may be attached to the opposite surface 41b of the support body 4 using double-sided tape or the like without providing an attachment member on the support body 4. Since the foam surface has minute irregularities due to air bubbles, which reduces the adhesive area and makes it difficult for double-sided tape to adhere, a film such as PET may be interposed between the opposite surface 41b of the support body 4 and the circuit board 52, battery 54, etc. to improve adhesive strength. Alternatively, the double-sided tape may be made removable so that the circuit board 52, battery 54, etc. can be reused.

[0051] [2-3. Electrical Components] As shown in FIGS. 1 and 2, the electrical component 5 includes a connector 51, a circuit board 52, wiring 53, a battery 54, an antenna 56, an operation unit 57, a readout IC 58, and the like.

[0052] The connector 51 can be connected to an external connector for supplying power from an external device via a wired connection or for communicating with an external device. The connector 51 is connected to a circuit board 52 and outputs external power and communication signals to the circuit board 52. The antenna 56 performs wireless communication with an external device. The antenna 56 is connected to the circuit board 52 and outputs a communication signal from the outside to the circuit board 52. The operation unit 57 is a switch such as a power switch, a changeover switch, etc. The operation unit 57 is connected to the circuit board 52, and outputs an input operation signal to the circuit board 52. The readout IC 58 converts the output signal from the radiation detection unit 3 into image data.

[0053] (2-3-1. Circuit board) The circuit board 52 is spaced apart from the rear surface portion 21. This makes it possible to prevent the load received by the housing 110 from being transmitted to the circuit board 52 from the outside. Various electronic circuits are mounted on the circuit board 52. The circuit board 52 includes an SIF board, a control board, a board on which a wireless communication circuit is mounted, a board on which a power supply circuit is mounted, and the like. The SIF board is connected to the radiation detection unit 3 via wiring 53, and the output signal of the radiation detection unit 3 is read out via the wiring 53 and a readout IC 58 provided thereon. The control board controls each circuit to generate image data. The wireless communication circuit is a circuit for wireless communication with other devices. The power supply circuit is a circuit for applying voltage to semiconductor elements and supplying power to the above circuits.

[0054] (2-3-2. Wiring) The wiring 53 is configured by, for example, a flexible printed circuit board (Flexible Printed Circuits). The wiring 53 connects the terminals of the signal lines (photoelectric conversion elements 31f) of the radiation detection unit 3, the readout IC 58, and the circuit board 52.

[0055] (2-3-3. Battery) The battery 54 supplies power to each component of the radiographic imaging device 100. In this embodiment, the battery 54 is a lithium ion capacitor, but it may be a lithium ion battery, another rechargeable battery, or the like. A plurality of batteries 54 may be provided.

[0056] (2-3-4. Other) As described above, by setting the distance between the leg portions 4b to 50 to 70 mm or less, it is possible to reduce the flexing of the planar portion 4a of the support body 4. For this reason, it is preferable that the circuit board 52, battery 54, etc. housed in the recess 4c have at least a short side of 70 mm or less. This ensures a distance between the leg portions 4b sufficient to reduce the flexing of the planar portion 4a of the support body 4.

[0057] [2-4. Vibration Damping Materials] The vibration damping member 8 damps the vibration of the readout IC 58 . The vibration damping member 8 is disposed between the wiring 53 and the rear surface portion 21 at a position facing the readout IC 58 with the wiring 53 interposed therebetween.

[0058] [2-5. Radio wave absorbing materials] Fig. 6A is a schematic diagram of a cross section taken along line VI-VI of the radiographic imaging device of Fig. 1 when it does not include the radio wave absorber 9. In Fig. 6A, members included in the internal module 120 other than the planar portion 4a of the support body 4 and the antenna 56 are omitted. As shown in FIG. 6A, the antenna 56 is provided on the side surface portion 12 and is arranged to transmit radio waves F1 (transmission waves) in the negative direction of the X-axis. However, radio waves F2, which are a part of the radio waves F1, are radiated behind the antenna 56 (positive direction of the X-axis). The radio waves F2 are reflected by the support body 4 made of metal and radiated as reflected waves F3 in the negative direction of the X-axis. As a result, the reflected waves F3 are added to the radio waves F1 (transmission waves). In other words, the antenna 56 radiates radio waves that are stronger than expected, which may not comply with EMC (Electromagnetic Compatibility) standards. To prevent this, as shown in Fig. 6B, the internal module 120 includes a radio wave absorbing material 9 between the antenna 56 and the planar portion 4a of the support body 4. In Fig. 6B, members included in the internal module 120 other than the planar portion 4a of the support body 4, the antenna 56, and the radio wave absorbing material 9 are omitted. The radio wave absorber 9 absorbs the radio wave F2, so that the reflected wave F3 reflected by the support 4 can be suppressed.

[0059] [2-6. First Adhesive Member] FIG. 7 shows a partial cross-sectional view VII of FIG. The first attaching member 6 includes, in order from the negative direction of the Z axis, a first breathable adhesive material 61 which is an adhesive tape, a radiation shielding layer 62, and a first attaching adhesive 63.

[0060] (2-6-1. First breathable adhesive) FIG. 8 shows a schematic diagram of the first ventilation adhesive material 61 as viewed from the negative Z-axis direction side. The first ventilation adhesive 61 has adhesives (adhesive 61a and adhesive 61c) on both sides in the Z-axis direction. 7 and 8, in the first ventilation adhesive 61 of this embodiment, the ventilation path 6a is provided in the adhesive 61a located on the support body 4 side (the negative Z-axis direction side). In other words, the first attaching member 6 has the ventilation path 6a provided on only one surface. When bonding the radiation detection unit 3 and the support 4 with the first bonding member 6, as shown in FIG. 9A, the first bonding member 6 is bonded to one side of the radiation detection unit 3 while pushing out any air between the radiation detection unit 3 and the first bonding member 6 using a bonding jig 300. Next, as shown in FIG. 9B, the side of the first bonding member 6 that is not bonded to the radiation detection unit 3 is bonded to the planar portion 4a of the support 4. At this time, since flat plate-like components are bonded together and the bonding jig 300 cannot push out the air, an air path is required to push out the air between the first bonding member 6 and the planar portion 4a. As described above, if the first bonding member 6 has an air passage 6a on at least one side, it is possible to prevent air from building up between the radiation detection unit 3 and the support 4. Since the first adhesive member 6 has an air passage 6a on only one side, the adhesive (first adhesive 63) on the side of the first adhesive member 6 where the air passage 6a is not provided can ensure sufficient adhesive strength between the radiation detection unit 3 and the support 4.

[0061] The ventilation paths 6a may be provided in the adhesives (adhesive 61a and first adhesive 63) on both sides in the Z-axis direction of the first attaching member 6. However, it is preferable that the number of ventilation paths 6a be within a predetermined range to prevent a decrease in adhesive strength of the first attaching member 6. The first attaching member 6 may be formed by attaching a single-sided tape.

[0062] The first breathable adhesive 61 includes adhesives 61a and 61c and a base material 61b. The adhesives 61a and 61c are general adhesives such as acrylic compounds, natural rubber, silicon compounds, synthetic rubber, and the like. The base material 61b is made of a resin such as polyethylene, polypropylene, polyethylene terephthalate, polyimide, etc. If shielding properties or thermal conductivity are required, the base material 61b may be made of a metal. The first breathable adhesive 61 may be a substrate-less tape that does not have the substrate 61b and is composed of only the adhesives 61a and 61c.

[0063] The ventilation path 6a is provided continuously from one end of the first attaching member 6 to the other end on the opposite side. Even if one end of the ventilation path 6a is not connected to one end of the first attaching member 6, it is sufficient that the other end of the ventilation path 6a is continuous to the other end of the first attaching member 6. This allows air between the first attaching member 6 and the support body 4 to be pushed out when the first attaching member 6 and the support body 4 are attached together. Therefore, it is possible to prevent air from remaining between the first attaching member 6 and the support body 4.

[0064] The spacing (pitch P1) of the ventilation channels 6a is preferably 2.5 mm or more (10 or less in terms of mesh count). In this case, the first ventilation adhesive 61 contains more than twice as much adhesive 61a as conventional adhesive tapes, thereby improving adhesive strength. The spacing (pitch P1) of the ventilation channels 6a is preferably 25 mm or less (expressed in terms of the number of meshes, 1 or more). In this case, a sufficient number of ventilation channels 6a can be secured to prevent air from accumulating between the first attaching member 6 and the support body 4. The interval (pitch P1) between the ventilation channels 6a is more preferably 5 to 20 mm (1.25 to 2.5 in terms of mesh number).

[0065] In this embodiment, the arrangement pattern of the ventilation paths 6a is formed in a lattice pattern parallel to the sides of the first ventilation adhesive 61, as shown in FIG. 8 , but is not limited thereto. The arrangement pattern of the ventilation paths 6a may be a diagonal lattice pattern tilted at 45 degrees with respect to the sides of the first ventilation adhesive 61. Alternatively, the arrangement pattern of the ventilation paths 6a may be a pattern in which equilateral triangular ventilation paths 6a are arranged on the first ventilation adhesive 61 when viewed from the negative direction of the Z axis. The arrangement pattern of the ventilation paths 6a may be such that the ventilation paths 6a are connected from intersections of various parts in the plane of the first ventilation adhesive 61 to the ends. In this case, the spacing (pitch P1) of the ventilation paths 6a is the distance between the ventilation paths 6a arranged in parallel. Alternatively, in this case, the spacing (pitch P1) of the ventilation paths 6a is the distance between the intersections of the ventilation paths 6a and the ventilation paths 6a near the intersections.

[0066] The ventilation path 6a may be formed by providing a convex portion on the release paper of the adhesive tape so that when the release paper is stuck to the adhesive 61a, the convex portion of the release paper pushes away the adhesive 61a. The ventilation passages 6a may be formed by cutting a slit in the adhesive 61a with a cutter or the like. When the ventilation passages 6a are formed in this manner, the width (length in the X-axis direction or the Y-axis direction) of the ventilation passages 6a can be made smaller. This allows the amount of adhesive 61a per unit area in the first ventilation adhesive 61 to be increased. The depth of the slit for the ventilation passages 6a may be only a part of the layer of adhesive 61a, or the entire layer of adhesive 61a and a part of the base material 61b. Alternatively, the slit may be made by cutting from the front surface (the surface on the adhesive 61a side) to the back surface (the surface on the adhesive 61c side) of the first ventilation adhesive 61 while preventing the first ventilation adhesive 61 from separating.

[0067] The width of the slit serving as the ventilation path 6a (the length in the X-axis direction or the Y-axis direction) is 0.01 mm or more. Therefore, the ventilation path 6a can prevent air from remaining between the first attaching member 6 and the support body 4. The width of the slit as the ventilation path 6a (the length in the X-axis direction or the Y-axis direction) is preferably 0.3 mm or less, which ensures the adhesive strength of the adhesive 61a.

[0068] The base material 61b may be made of a foam. When the base material 61b is made of an open-cell foam, when the first attaching member 6 and the support body 4 are attached to each other, air between the first attaching member 6 and the support body 4 can be pushed out to the outside through the base material 61b in addition to the air passage 6a.

[0069] (2-6-2. Radiation shielding layer) The radiation shielding layer 62 prevents scattered radiation from reaching the circuit board 52 . The radiation shielding layer 62 is provided in the first attaching member 6 between the first breathable adhesive material 61 and the first attaching adhesive 63. The radiation shielding layer 62 is preferably made of metal, particularly lead, but in recent years, tungsten, molybdenum, etc. have also been used from the viewpoint of environmental protection.

[0070] (2-6-3. First adhesive) The first adhesive 63 is provided between the radiation shielding layer 62 and the radiation detection unit 3 and fixes the radiation shielding layer 62 to the radiation detection unit 3 .

[0071] (2-6-4. Other) The first attaching member 6 may include, instead of the first breathable adhesive material 61, a double-sided tape provided with a ventilation path on the support body 4 side. The first attachment member 6 may include a layer of a buffer material that reduces the load on the radiation detection unit 3 when a load is applied to the radiographic image capturing device 100. The first attachment member 6 may include a conductive layer (a layer having electrical conductivity) as a shield to prevent noise from reaching the radiation detection unit 3. The adhesives 61a and 61c, the base material 61b, and the first attaching adhesive 63 may have antistatic properties. The first attaching member 6 may include a conductive layer (a layer having conductivity) serving as a shield to block the influence of charging, between the first ventilation adhesive 61 and the radiation detection unit 3. This prevents the adhesive 61a from becoming charged due to friction between the air passing through the ventilation path 6a and the adhesive 61a, which can adversely affect the radiation detection unit 3 and the electrical component 5. The first attaching member 6 may have a laminated structure. That is, as long as the ventilation path 6a is formed on one or both of the outermost surfaces of the first attaching member 6 in the Z axis direction, another structure may be provided on a portion other than the outermost surface of the first attaching member 6 in the Z axis direction.

[0072] [2-7. Second Adhesive Member] The second attaching member 7 includes, in order from the positive direction of the Z axis, a second breathable adhesive material 71 which is an adhesive tape, and a peelable adhesive material 72.

[0073] (2-7-1. Second breathable adhesive) FIG. 10 shows a schematic diagram of the second ventilation adhesive material 71 as viewed from the positive Z-axis direction side. The second ventilation adhesive 71 has adhesives (adhesive 71a and adhesive 71c) on both sides in the Z-axis direction. 7 and 10, in the second ventilation adhesive 71 of this embodiment, the ventilation path 7a is provided in the adhesive 71a on the front surface 11 side (the positive Z-axis direction side). In other words, the second attaching member 7 has the ventilation path 7a provided on only one surface. When bonding the radiation detection unit 3 and the front surface 11 together using the second bonding member 7, as shown in FIG. 11A, the second bonding member 7 is bonded to one side of the radiation detection unit 3 while using a bonding jig 300 to push out any air between the radiation detection unit 3 and the second bonding member 7. Next, as shown in FIG. 11B, the side of the second bonding member 7 that is not bonded to the radiation detection unit 3 is bonded to the front surface 11. At this time, since flat components are being bonded together, the bonding jig 300 cannot push out the air, so an air path is required to push out the air between the second bonding member 7 and the front surface 11. As described above, if the second bonding member 7 has an air passage 7a on at least one side, it is possible to prevent air from building up between the radiation detection unit 3 and the front surface 11. Since the second adhesive member 7 has the air passage 7a on only one side, the adhesive on the side of the second adhesive member 7 where the air passage 7a is not provided (the adhesive 72b of the peelable adhesive material 72, which will be described later) ensures sufficient adhesive strength between the radiation detection unit 3 and the front surface unit 11.

[0074] The ventilation paths 7a may be provided in the adhesive (adhesive 71a and adhesive 72b) on both sides of the second attaching member 7 in the Z-axis direction. However, it is preferable to keep the number of ventilation paths 7a within a predetermined range in order to prevent a decrease in adhesive strength of the second attaching member 7. The second attaching member 7 may be formed by attaching a single-sided tape.

[0075] The second breathable adhesive material 71 includes adhesives 71a and 71c and a base material 71b. The adhesives 71a and 71c are general adhesives such as acrylic compounds, natural rubber, silicon compounds, synthetic rubber, and the like. The base material 71b is made of a resin such as polyethylene, polypropylene, polyethylene terephthalate, polyimide, etc. If shielding properties or thermal conductivity are required, the base material 71b may be made of a metal. The second breathable adhesive material 71 may be a substrate-less tape that does not have the substrate 71b and is composed of only the adhesives 71a and 71c.

[0076] The ventilation path 7a is provided continuously from one end of the second attaching member 7 to the other end on the opposite side. One end of the ventilation path 7a does not need to be connected to one end of the second attaching member 7, as long as the other end of the ventilation path 7a continues to the other end of the second attaching member 7. This allows air between the second attaching member 7 and the front face portion 11 to be pushed out when the second attaching member 7 and the front face portion 11 are attached together. This prevents air from remaining between the second attaching member 7 and the front face portion 11.

[0077] The spacing (pitch P2) of the ventilation channels 7a is preferably 2.5 mm or more (10 or less in terms of mesh count), similar to the pitch P1. In this case, the second ventilation adhesive 71 contains more than twice as much adhesive 71a as conventional adhesive tapes, thereby improving adhesive strength. The spacing (pitch P2) between the ventilation channels 7a is preferably 25 mm or less (1 or more in terms of the number of meshes), similar to the pitch P1. In this case, a sufficient number of ventilation channels 7a can be secured to prevent air from accumulating between the second attaching member 7 and the front surface part 11. The interval (pitch P2) between the ventilation channels 7a is more preferably 5 to 20 mm (1.25 to 2.5 in terms of mesh number), similar to the pitch P1.

[0078] As shown in FIG. 10 , the arrangement pattern of the ventilation paths 7a in this embodiment is formed in a lattice pattern parallel to the sides of the second ventilation adhesive 71, but is not limited thereto. The arrangement pattern of the ventilation paths 7a may be a diagonal lattice pattern tilted at 45 degrees with respect to the sides of the second ventilation adhesive 71. Alternatively, the arrangement pattern of the ventilation paths 7a may be a pattern in which equilateral triangular ventilation paths 7a are arranged on the second ventilation adhesive 71 when viewed from the positive direction of the Z axis. The arrangement pattern of the ventilation paths 7a may be such that the ventilation paths 7a are connected from intersections of various parts in the plane of the second ventilation adhesive 71 to the ends. In this case, the spacing (pitch P2) of the ventilation paths 7a is the distance between the ventilation paths 7a arranged in parallel. Alternatively, in this case, the spacing (pitch P2) of the ventilation paths 7a is the distance between the intersections of the ventilation paths 7a and the ventilation paths 7a near the intersections.

[0079] The ventilation passages 7a may be formed by providing convex portions on the release paper of the adhesive tape so that when the release paper is stuck to the adhesive 71a, the convex portions of the release paper push the adhesive 71a aside. The ventilation passages 7a may be formed by cutting a slit in the adhesive 71a with a cutter or the like. When the ventilation passages 7a are formed in this manner, the width (length in the X-axis direction or the Y-axis direction) of the ventilation passages 7a can be made smaller. This allows the amount of adhesive 71a per unit area in the second ventilation adhesive 71 to be increased. The depth of the slit for the ventilation passages 7a may be only a part of the layer of adhesive 71a, or the entire layer of adhesive 71a and a part of the base material 71b. Alternatively, the slit may be made by cutting from the front surface (the surface on the adhesive 71a side) to the back surface (the surface on the adhesive 71c side) of the second ventilation adhesive 71 while preventing the second ventilation adhesive 71 from separating.

[0080] The width of the slit serving as the ventilation path 7a (the length in the X-axis direction or the Y-axis direction) is 0.01 mm or more, similar to the ventilation path 6a. Therefore, the ventilation path 7a can prevent air from remaining between the second attaching member 7 and the front surface part 11. The width of the slits forming the ventilation paths 7a (the length in the X-axis direction or the Y-axis direction) is preferably 0.3 mm or less, similar to the ventilation paths 6a, in which case the adhesive strength of the adhesive 71a can be ensured.

[0081] The base material 71b may be made of a foam. When the base material 71b is made of an open-cell foam, when the second attachment member 7 and the front surface portion 11 are attached to each other, air between the second attachment member 7 and the front surface portion 11 can be pushed out to the outside through the base material 71b in addition to the air passage 7a.

[0082] (2-7-2. Peelable adhesive) The peelable adhesive material 72 is provided on the radiation detection unit 3 side of the second attaching member 7. The peelable adhesive material 72 includes a base material 72a on the second breathable adhesive material 71 side (positive Z-axis direction side) and an adhesive 72b on the radiation detection unit 3 side (negative Z-axis direction side). The adhesive strength of the adhesive 72b is weaker than the adhesive strength of the adhesive 71a provided with the ventilation path 7a, and is strong enough to prevent external disturbances from causing peeling of the adhesive 72b from the radiation detection unit 3. The adhesive 72b does not peel off from the radiation detection unit 3 while the radiographic imaging device 100 is in use. On the other hand, the adhesive 72b can be peeled off from the radiation detection unit 3 when the internal module 120 is peeled off (reworked) from the front surface unit 11. The adhesive strength of the adhesive 72b is weaker than the adhesive strength of the adhesive bonding together the components stacked inside the radiation detection unit 3. This prevents the stacked components inside the radiation detection unit 3 from peeling off due to the peeling force when the internal module 120 is peeled off from the front surface portion 11.

[0083] The position of the peelable adhesive material 72 on the second attaching member 7 may be on the front surface portion 11 side. The adhesive 72b of the peelable adhesive material 72 may be provided with ventilation passages having a pitch within a predetermined range.

[0084] The second attaching member 7 may include only the second ventilation adhesive 71, without including the peelable adhesive 72. In this case, the ventilation path 7a is provided on one of the outermost surfaces in the Z-axis direction of the second ventilation adhesive 71. This may result in a configuration in which the surface with the ventilation path 7a is peeled off from the radiation detection unit 3 or the front surface 11 by creating a difference in adhesive strength between the two surfaces in the Z-axis direction of the second ventilation adhesive 71.

[0085] As shown in FIGS. 12A and 12B , a peeling aid member 10 may be provided between the internal module 120 and the second attaching member 7. The peeling aid member 10 protrudes from the surface of the internal module 120 facing the second attaching member 7 (attaching surface 120a) and is configured to be grippable when peeling off the internal module 120. By providing the peeling aid member 10, it becomes easier to apply force to the internal module 120, so that the internal module 120 can be easily peeled off from the box 1. When stored in the housing 110, the peeling aid member 10 is stored in a folded state on the internal module 120 side. The peeling aid member 10 is a film made of a resin such as PET.

[0086] When peeling the internal module 120 from the box 1, the user removes the lid 2 and turns the box 1 over, as shown in Fig. 12A. Next, the user grasps the folded peeling aid member 10 and pulls it in the peeling direction (upward in the figure), as shown in Fig. 12B. This allows the internal module 120 to be easily peeled off from the box 1.

[0087] 13, the end 10a of the peeling aid member 10 opposite the gripped side may be extended to the surface between the side surface portion 12 and the internal module 120. This increases the adhesive area between the peeling aid member 10 and the internal module 120. Therefore, when peeling the internal module 120 from the front surface portion 11, pulling the peeling aid member 10 can prevent the peeling aid member 10 itself from peeling off from the internal module 120. This makes it easy to peel the internal module 120 from the front surface portion 11.

[0088] (2-7-3. Other) The adhesives 71a, 71c, and 72b and the base materials 71b and 72a may have antistatic properties. The second attaching member 7 may include a conductive layer (a layer having conductivity) as a shield for blocking the influence of charging between the second breathable adhesive 71 and the radiation detection unit 3. This prevents the adhesive 71a from becoming charged due to friction between the air passing through the ventilation path 7a and the adhesive 71a, which can adversely affect the radiation detection unit 3 and the electrical component 5. The second attachment member 7 may have a laminated structure. That is, as long as the ventilation path 7a is formed on one or both of the outermost surfaces of the second attachment member 7 in the Z axis direction, another structure may be provided on a portion of the second attachment member 7 other than the outermost surface in the Z axis direction.

[0089] [2-8. Other] The first attaching member 6 and the second attaching member 7 may have different configurations as in this embodiment, or may have the same configuration.

[0090] Instead of providing the air passages 6a in the first attaching member 6, continuous grooves may be provided as air passages from one end to the other end of the support body 4 on the surface of the support body 4 facing the first attaching member 6 (the positive Z-axis direction side). In this case, the grooves serving as air passages may be formed on the surface of the support body 4 (the surface facing the positive Z-axis direction) when the support body 4 is molded from a material such as metal or resin, or the grooves serving as air passages may be formed by cutting or the like after the support body 4 is molded. The pitch and arrangement pattern of the air passages provided in the support body 4 may be the same as the pitch and arrangement pattern of the air passages 6a in the first attaching member 6.

[0091] Instead of providing the air passage 6a in the first adhesive member 6, an air passage that is a continuous groove from one end to the other end of the radiation detection unit 3 may be provided on the surface of the radiation detection unit 3 facing the first adhesive member 6 (the negative Z-axis direction side). In this case, if the element substrate 31 of the radiation detection unit 3 is a glass substrate, a resin layer is provided on the surface of the element substrate 31 on the negative Z-axis direction side. Next, the groove that serves as the air passage is formed in the resin layer by etching, cutting, or the like. Alternatively, if the material of the element substrate 31 is resin, the groove that serves as the air passage may be formed on the surface of the element substrate 31 on the negative Z-axis direction side.

[0092] When a load is applied to the radiographic imaging device 100, if the front surface 11 and the support body 4 have different degrees of warping, the internal module 120 may peel off from the front surface 11. In this case, peeling tends to occur from the ends of the internal module 120 in the X-axis direction and the Y-axis direction. To address this, the internal module 120 may include an elastic body 200 (see FIG. 14A) provided between the opposite surface 41b of the support body 4 and the back surface 21. This can prevent the internal module 120 from peeling off from the front surface 11. Elastic body 200 is a spring, rubber, elastomer, or a foam of rubber, resin, etc. Elastic body 200 is formed to have a thickness (length in the Z-axis direction) such that it is compressed by 10 to 50% when housed in housing 110. The elastic body 200 is preferably provided near the ends of the four sides that form the opposite surface 41b of the support body 4. The elastic body 200 is more preferably provided near the four corners of the opposite surface 41b of the support body 4. The elastic body 200 only needs to be provided in a position that at least partially overlaps the area where the front surface 11 and the internal module 120 are attached, in orthogonal projection from the radiation incident surface 110a. The elastic body 200 may be fixed to the back surface portion 21, but is preferably fixed to the opposite surface 41b of the support body 4 by adhesive. As shown in Fig. 14B, inclined portions 21a may be provided at the ends of the back surface portion 21 in the X-axis and Y-axis directions, at positions facing the elastic body 200, so that the distance between the back surface portion 21 and the opposite surface 41b of the support body 4 is smaller than in the example shown in Fig. 14A. This allows the length of the elastic body 200 in the Z-axis direction to be shorter than in the example shown in Fig. 14A. As shown in Fig. 14C, recesses 21b may be provided at the ends of rear surface 21 in the X-axis and Y-axis directions, facing elastic body 200, to make the distance between rear surface 21 and opposite surface 41b of support body 4 smaller than in the example shown in Fig. 14A. This allows the length of elastic body 200 in the Z-axis direction to be shorter than in the example shown in Fig. 14A.

[0093] [3. Effects] As described above, the radiographic imaging device 100 of this embodiment includes a radiation detection unit 3 that detects radiation, and a support body 4 that supports the radiation detection unit 3. The radiographic imaging device 100 of this embodiment also includes a housing 110 that houses the radiation detection unit 3 and the support body 4, and an attachment member (first attachment member 6) that fixes at least the radiation detection unit 3 to the support body. The attachment member has an air passage (air passage 6a) provided on only one side thereof. Therefore, the air passage 6a can push air out, preventing air from becoming trapped between the radiation detection unit 3 and the support 4. Furthermore, the adhesive on the side of the attachment member where the air passage 6a is not provided can ensure sufficient adhesive strength between the radiation detection unit 3 and the support 4. In other words, when attaching the radiation detection unit 3 to the support 4, air can be prevented from becoming trapped and sufficient adhesive strength can be ensured.

[0094] In the radiographic image capturing device 100 of this embodiment, the internal module 120 including the radiation detection unit 3 and the support body 4 is fixed to the housing 110 by an adhesive member (second adhesive member 7). Therefore, when attaching the internal module 120 to the housing 110, it is possible to prevent air from being trapped and ensure sufficient adhesive strength.

[0095] In the radiographic imaging device 100 of this embodiment, the pitch of the air passages 6a and 7a is 2.5 mm to 25 mm. Therefore, the adhesive strength can be improved because the adhesive member contains more than twice the amount of adhesive as conventional adhesive tapes. Also, a sufficient number of ventilation paths 6a can be secured to prevent air from accumulating between the first adhesive member 6 and the support body 4. Alternatively, a sufficient number of ventilation paths 7a can be secured to prevent air from accumulating between the second adhesive member 7 and the housing 110 (front surface portion 11).

[0096] In the radiographic imaging device 100 of this embodiment, the pitch of the air passages 6a and 7a is 5 mm to 20 mm. Therefore, the adhesive strength of the attachment member can be further improved, and the occurrence of air pockets between the first attachment member 6 and the support body 4 can be further prevented. Alternatively, the occurrence of air pockets between the second attachment member 7 and the housing 110 (front surface portion 11) can be further prevented.

[0097] In the radiographic imaging device 100 of this embodiment, the radiation detection unit 3 has a flexible substrate (element substrate 31) and a semiconductor element (photoelectric conversion element 31f) formed on the imaging surface of the substrate. Therefore, even if the radiographic imaging device 100 receives an impact, the radiation detection unit 3 is less likely to be damaged.

[0098] In the radiographic image capturing apparatus 100 of this embodiment, the support body 4 is made of metal. Therefore, the strength of the support body 4 can be increased, and the support body 4 can be made less likely to be damaged even if the radiographic image capturing apparatus 100 receives an impact.

[0099] In the radiographic image capturing apparatus 100 of this embodiment, the support body 4 is made of a foam material. Therefore, the weight of the radiographic image capturing device 100 can be reduced.

[0100] In the radiographic image capturing device 100 of this embodiment, the attaching members (first attaching member 6, second attaching member 7) have a laminated structure. The attachment member includes a conductive layer. Therefore, it is possible to prevent the adhesive 61a from becoming electrically charged due to friction between the air passing through the ventilation path 6a and the adhesive 61a, which would adversely affect the radiation detection unit 3 and the electrical components 5. It is also possible to prevent the adhesive 71a from becoming electrically charged due to friction between the air passing through the ventilation path 7a and the adhesive 71a, which would adversely affect the radiation detection unit 3 and the electrical components 5.

[0101] In the radiographic image capturing apparatus 100 of this embodiment, the attachment members (first attachment member 6, second attachment member 7) include double-sided tape. Therefore, the attachment member can be easily manufactured.

[0102] In the radiographic image capturing apparatus 100 of this embodiment, the attaching members (first attaching member 6, second attaching member 7) are removable from the attached member. Therefore, the radiation detection unit 3 can be reworked from the support 4. Alternatively, the internal module 120 can be reworked from the housing 110 (front surface portion 11).

[0103] The present invention is not limited to the above-described embodiment and modifications, and various modifications are possible. For example, the width (length in the X-axis and Y-axis directions) of the air passage 6a may be substantially the same from its end on the positive Z-axis side to its end on the negative Z-axis side. Similarly, the width (length in the X-axis and Y-axis directions) of the air passage 7a may be substantially the same from its end on the positive Z-axis side to its end on the negative Z-axis side.

[0104] In addition, the specific configurations, operation contents and procedures shown in the above embodiments can be modified as appropriate within the scope that does not deviate from the spirit of the present invention. [Explanation of symbols]

[0105] 100 Radiation imaging device 110 Case 110a Radiation entrance surface (front) 110b back 110c side 1 box body 11 Front part 12 Side part 2 Lid 21 Back section 21a Slope 21b Recess 120 Internal Module 120a adhesive surface 3 Radiation detection unit 31 Element substrate (substrate) 31f Photoelectric conversion element (semiconductor element) 32 Optical adhesive layer 33 Scintillator 34 Scintillator substrate 35 Moisture barrier 4 Support 4a Planar part 4b Legs 4c Recess 41a Support surface 41b opposite side 5. Electrical Components 51 Connector 52 Circuit Board 53 Wiring 54 Battery 56 Antenna 57 Operation section 58 Readout IC 6 First attachment member (attachment member) 61 First breathable adhesive 61a, 61c Adhesive 61b Base material 62 Radiation Shielding Layer 63 First adhesive 7 Second attachment member (attachment member) 71 Second breathable adhesive 71a, 71c Adhesive 71b Base material 72 Removable adhesive 72a Base material 72b Adhesive 8. Vibration-damping members 9 Radio wave absorbing material 10 Peeling aid 200 Elastic Body

Claims

1. a radiation detection unit that detects radiation; a support for supporting the radiation detection unit; a housing that houses the radiation detection unit and the support; an attachment member that fixes the radiation detection unit to at least the support; Equipped with The attachment member has an air passage on only one side thereof.

2. The radiographic imaging device according to claim 1 , wherein an internal module including the radiation detection unit and the support body is fixed to the housing by the adhesive member.

3. 3. The radiographic imaging device according to claim 1, wherein the pitch of the air passages is 2.5 mm to 25 mm.

4. 4. The radiographic imaging device according to claim 3, wherein the pitch of the air passages is 5 mm to 20 mm.

5. The radiographic imaging device according to claim 1 , wherein the radiation detection unit includes a flexible substrate and a semiconductor element formed on an imaging surface of the substrate.

6. The radiographic imaging device according to claim 1 , wherein the support body is made of metal.

7. The radiographic imaging device according to claim 1 , wherein the support body is made of a foam.

8. The radiographic imaging device according to claim 1 , wherein the attachment member has a laminated structure.

9. The radiographic imaging device according to claim 8 , wherein the attachment member includes a conductive layer.

10. The radiographic imaging device according to claim 1 , wherein the attachment member includes a double-sided tape.

11. The radiographic imaging device according to claim 1 , wherein the attachment member is removable from the attached member.

Images