JP2019164041A - Radiographic imaging apparatus and radiographic imaging system - Google Patents

Abstract

To minimize reduction in mechanical strength of a radiographic imaging apparatus.SOLUTION: The present invention relates to a radiographic imaging apparatus 100 comprising a radiation detection panel 1 for detecting radiation and a housing 7 for accommodating the radiation detection panel 1. The housing 7 has a window 11A in which a wireless power receiver 8 and at least either of an LED 9 for indicating a state of the radiographic imaging apparatus 100 and a wireless data transceiver 10 are disposed.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a radiation imaging apparatus and a radiation imaging system.

2. Description of the Related Art Radiography apparatuses that obtain radiation images by detecting the intensity distribution of radiation that has passed through an object are widely used in industrial nondestructive inspection and medical diagnosis.
Patent Document 1 discloses a radiation imaging apparatus that obtains electric power necessary for a radiation sensor panel and an electric substrate and wirelessly receives power in order to realize waterproofing and prevention of electric leakage.
Patent Document 2 discloses a wireless power supply / reception device that performs wireless data transfer together with wireless charging.

JP2015-166691A JP 2014-068471 A

  The radiation imaging apparatus is assumed to be subjected to an impact force or an external force when taking an image. Therefore, in order to improve the strength, the housing of the radiation imaging apparatus may be formed of a metal alloy such as aluminum or magnesium, CFRP, or the like. Since the metal alloy and CFRP have conductivity, they shield electromagnetic waves used for wireless data transfer and charging, and transfer efficiency decreases. For this reason, when performing data transfer or charging wirelessly, it is necessary to provide a window portion in which a part of the casing is made of a non-conductive material. In addition, since metal alloys and CFRP do not have optical transparency, it is necessary to provide a window part of the housing made of a material having optical transparency even when an indicator using a light source such as an LED is disposed. . If a large number of such windows are arranged, a plurality of holes are provided in the housing, discontinuous strength surfaces are generated, and the strength of the radiation imaging apparatus may be reduced.

  The present invention has been made in view of the above-described problems, and an object thereof is to suppress a decrease in strength of a radiographic apparatus.

  The present invention is a radiation imaging apparatus having a radiation detection panel for detecting radiation, and a housing for housing the radiation detection panel, the housing having a window portion, At least one of a light source and a wireless data transmission unit indicating a state of the radiation imaging apparatus, and a wireless power receiving unit are arranged.

  According to the present invention, it is possible to suppress a decrease in strength of the radiation imaging apparatus.

It is an external view which shows an example of the radiography apparatus of 1st Embodiment. It is sectional drawing which shows an example of a radiography apparatus. It is an external view which shows an example of the radiography apparatus which is a modification of 1st Embodiment. It is sectional drawing which shows an example of the radiography apparatus which is a modification. It is sectional drawing which shows an example of the radiography apparatus of 2nd Embodiment. It is an external view which shows an example of the radiography apparatus of 3rd Embodiment. It is sectional drawing which shows an example of a radiography apparatus. It is sectional drawing which shows an example of a radiography system.

  Embodiments of the present invention will be specifically described with reference to the accompanying drawings. However, details of dimensions and structures shown in each embodiment are not limited to those shown in the text and the drawings. The radiation described below is not limited to X-rays, but includes α-rays, β-rays, γ-rays, particle rays, cosmic rays, and the like.

(First embodiment)
A radiation imaging apparatus 100 according to the first embodiment will be described with reference to FIGS. 1 to 4.
FIG. 1A is an external view showing an example of the radiation imaging apparatus 100 viewed from the incident direction of radiation. FIG. 1B is an external view showing an example of the radiation imaging apparatus 100 viewed from the opposite side of FIG. Fig.2 (a) is sectional drawing which looked at the cross section cut | disconnected along the II line | wire in Fig.1 (a) from the arrow direction. FIG. 2B is an external view when the wireless power receiving unit 8 and the LED 9 are viewed from the direction of the arrow Ar1 in FIG. FIG.2 (c) is the enlarged view which expanded the periphery of LED9 among Fig.2 (a).

The radiation imaging apparatus 100 acquires a radiation image corresponding to the radiation irradiated by a radiation generation apparatus (not shown) and transmitted through the subject. The radiation imaging apparatus 100 transfers the acquired radiation image data to an external device or displays it on an external display device or the like.
The radiation imaging apparatus 100 includes a radiation detection panel 1, a control board 2, a secondary battery 4, a support base 5, a buffer material 6, a housing 7, a wireless power receiving unit 8, an LED 9, an antenna 10, and the like.

  The radiation detection panel 1 converts incident radiation into an image signal. The radiation detection panel 1 has a detection surface on the side on which radiation is incident. The radiation detection panel 1 is arranged on a sensor substrate 1a in which a plurality of photoelectric conversion elements are two-dimensionally arranged on a glass substrate, a phosphor layer 1b arranged on the sensor substrate 1a, and a phosphor layer 1b. And a phosphor protective film 1c. As the plurality of photoelectric conversion elements arranged on the sensor substrate 1a, conversion elements capable of detecting MIS type and PIN type visible light are used. The phosphor protective film 1c protects the phosphor layer 1b. The phosphor protective film 1c is made of a material having a relatively high moisture resistance.

The radiation detection panel 1 has an effective imaging region in which incident radiation can be imaged as a radiation image. Further, in the radiation detection panel 1, when viewed from the radiation incident direction, the entire area on the plane where the plurality of photoelectric conversion elements are arranged or a part of the area is set as an effective imaging area.
With the configuration described above, in the radiation detection panel 1, the phosphor layer 1b emits light due to the incident radiation, and the photoelectric conversion element disposed on the sensor substrate 1a converts the emitted light into an electrical signal. However, the radiation detection panel 1 may use a direct conversion type conversion element that directly converts radiation into an electric signal instead of the phosphor layer 1b and the photoelectric conversion element.
The radiation detection panel 1 is electrically connected to the control board 2 via the flexible circuit board 3.

The control board 2 reads the electrical signal converted by the radiation detection panel 1 and processes the read electrical signal. The control board 2 acquires radiation image data by converting the electric signal into a digital signal. The control board 2 corresponds to an example of a control unit.
The secondary battery 4 supplies power used for the operation of the radiation detection panel 1 and the control board 2. The secondary battery 4 has a function as a battery. As the secondary battery 4, for example, a lithium ion battery, an electric double layer capacitor, an all-solid battery, or the like is used.

The support base 5 supports the components of the radiation imaging apparatus 100 within the housing 7. The support base 5 includes a substrate support portion 51 and leg portions 52. The board | substrate support part 51 is formed, for example in flat form, and supports the radiation detection panel 1 by the incident plane side of a radiation. Further, the substrate support unit 51 supports the control substrate 2, the secondary battery 4, and the like on the surface opposite to the surface that supports the radiation detection panel 1. The leg portion 52 extends from a surface opposite to the surface that supports the radiation detection panel 1 and is joined to the housing 7.
The buffer material 6 protects the radiation detection panel 1 from external force. The buffer material 6 is disposed between the detection surface of the radiation detection panel 1 and the housing 7.

The housing 7 accommodates the components of the radiation imaging apparatus 100.
The housing 7 is a substantially rectangular parallelepiped and has a substantially rectangular shape having a long side and a short side when viewed from the incident direction of radiation. The housing 7 has a plurality of (for example, four) connecting the incident portion 71 where the radiation is incident, the bottom portion 72 located on the opposite side of the incident portion 71 with the radiation detection panel 1 interposed therebetween, and the incident portion 71 and the bottom portion 72. Side portion 73. The housing 7 can be configured by, for example, integrating the bottom portion 72 and the side portion 73 and joining a separate incident portion 71.

The incident part 71 is irradiated with radiation. The incident portion 71 has a substantially plate shape whose surface (outer surface) exposed to the outside is substantially flat. The incident portion 71 preferably has a relatively high transmittance of radiation in order to cause radiation to enter. Furthermore, it is preferable that the incident part 71 is light in weight and can secure a certain strength against an impact. For the incident portion 71, for example, a resin material, CFRP (carbon fiber reinforced plastic), or the like is used.
On the surface of the incident portion 71, an index 711 for indicating the center of the effective imaging region and the range of the effective imaging region is written. The indicator 711 is formed by painting or printing processing. By visually recognizing the index 711, the user can easily recognize the central portion of the effective shooting area and the effective shooting area. The index 711 may be a step that is recessed in the direction of the radiation detection panel 1 as long as the user can recognize the center of the effective imaging region and the range of the effective imaging region.

The bottom part 72 covers the components of the radiation imaging apparatus 100 from the side opposite to the incident part 71. The bottom portion 72 has a substantially plate shape whose surface (outer surface) exposed to the outside is substantially flat. The bottom part 72 is substantially parallel to the incident part 71.
The side part 73 covers the components of the radiation imaging apparatus 100 from the side. The side portion 73 has a substantially plate shape whose surface (outer surface) exposed to the outside is substantially flat. The side portion 73 is substantially orthogonal to the incident portion 71 and the bottom portion 72.
It is preferable that the bottom part 72 and the side part 73 have sufficient strength against dropping, impact, etc., light weight for the purpose of reducing the burden during transportation, and high operability. For the bottom portion 72 and the side portion 73, for example, a metal alloy such as magnesium or aluminum, CFRP, fiber reinforced resin, or the like is used. In addition, in order to reduce effectively the noise received from the exterior of the housing | casing 7, the bottom part 72 and the side part 73 may use the material with comparatively high magnetic permeability, such as SUS430.

The wireless power receiving unit 8 charges the secondary battery 4 by receiving power transmitted wirelessly. That is, the user can smoothly perform radiation imaging by appropriately charging the secondary battery 4 and maintaining a sufficient amount of power during imaging. The wireless power receiving unit 8 is controlled by the control board 2 to receive power.
The LED 9 functions as an indicator that indicates the state of the radiation imaging apparatus 100. For example, the LED 9 emits light to indicate to the user the state in which the radiation imaging apparatus 100 is activated or the state of operation. The LED 9 is an example of a light source.
The antenna 10 transmits and receives data to and from an external device wirelessly. The antenna 10 controls transmission / reception of data with an external device by the control board 2. The antenna 10 is an example of a wireless transmission / reception unit or a wireless data transmission unit.

  Here, when the housing 7 is made of a conductive material, the power receiving efficiency of the wireless power receiving unit 8 and the data transfer efficiency of the antenna 10 are reduced. Further, when the casing 7 is made of a material that does not transmit light, the user cannot recognize the light from the LED 9. Therefore, it is conceivable to improve the efficiency of transmitting data, power and light by providing a window in the housing 7. On the other hand, since it is necessary to provide a hole in a part of the housing 7 in the window portion, the structure of the radiation imaging apparatus 100 becomes discontinuous, and stress concentration tends to occur near the window portion. Further, since the rigidity of the casing 7 itself is reduced, the strength of the radiation imaging apparatus 100 is reduced. Since the radiation imaging apparatus 100 is assumed to be subjected to an impact force or an external force at the time of imaging or the like, a sufficient strength is required so as not to be damaged.

The housing 7 of the present embodiment has a configuration that suppresses a decrease in strength due to the window portion.
As shown in FIGS. 1 and 2, the housing 7 has two windows 11A and 11B. The window portions 11 </ b> A and 11 </ b> B are arranged close to one corner portion among the four corner portions of the rectangular housing 7. Specifically, the window portion 11A is disposed on the bottom portion 72, and the window portion 11B is disposed on the side portion 73 on the short side. The window portion 11 </ b> A and the window portion 11 </ b> B are arranged at the same position in the direction along the short side of the housing 7 or at the position where they overlap in the direction along the short side of the housing 7. The window portion 11 </ b> A has a substantially plate shape that is continuous with the bottom portion 72 and substantially parallel to the bottom portion 72. The window portion 11 </ b> B has a substantially plate shape that is continuous with the side portion 73 and substantially parallel to the side portion 73.

As shown in FIGS. 2A and 2C, the wireless power receiving unit 8, the LED 9, and the antenna 10 are arranged inside the window portion 11 </ b> A. When viewed from the direction of the arrow Ar1 shown in FIG. 2A, the wireless power receiving unit 8, the LED 9, and the antenna 10 are arranged so as to overlap with the window 11A. That is, when viewed from a direction orthogonal to the outer surface of the window portion 11A, the wireless power receiving unit 8, the LED 9, and the antenna 10 are arranged so as to overlap with the window portion 11A. Specifically, the wireless power receiving unit 8 and the LED 9 are disposed along the inner surface of the window portion 11A, and the antenna 10 is disposed at a position away from the inner surface of the window portion 11A. Therefore, the window portion 11A functions as a window portion for receiving power by the wireless power receiving portion 8, a window portion for transmitting the light of the LED 9, and a window portion for transferring data by the antenna 10. Yes. In particular, the window 11A mainly functions as a window for the wireless power receiving unit 8 and the LED 9 because the wireless power receiving unit 8 and the LED 9 are disposed in contact with the inner side surface.
On the other hand, the antenna 10 is disposed inside the window portion 11B. When viewed from the direction of the arrow Ar2 shown in FIG. 2A, the antenna 10 is disposed so as to overlap the window portion 11B. That is, when viewed from a direction orthogonal to the outer surface of the window portion 11B, the antenna 10 is disposed so as to overlap the window portion 11B. Specifically, the antenna 10 is disposed at a position away from the inner surface of the window portion 11B. Therefore, the window portion 11 </ b> B functions as a window portion for transferring data by the antenna 10.

Here, the wireless power receiving unit 8 and the LED 9 are configured to overlap each other. Specifically, the LED 9 is disposed so as to be positioned between the wireless power receiving unit 8 and the inner surface of the window portion 11A.
FIG. 2B is a diagram illustrating the configuration of the wireless power receiving unit 8 and the LED 9 as viewed from the direction of the arrow Ar1 in FIG. As shown in FIG. 2 (b), the LED 9 is located substantially at the center of the wireless power receiving unit 8. The wireless power receiving unit 8 is larger than the substrate 91 on which the LED 9 is mounted, and is disposed inside the window portion 11 </ b> A so as to cover the substrate 91 from the inside of the housing 7. As described above, by configuring the wireless power receiving unit 8 and the LED 9, the window unit of the wireless power receiving unit 8 and the LED 9 can be shared by one window unit 11A, and the size of the window unit 11A can be reduced. it can. Therefore, it can suppress that the intensity | strength of the housing | casing 7 falls. Further, by arranging the wireless power receiving unit 8 and the LED 9 as described above, it is possible to save space as compared to the case where they are separately arranged, and the radiation imaging apparatus 100 can be downsized.

The antenna 10 is supported on a surface of the substrate support 51 that is opposite to the surface that supports the radiation detection panel 1. As shown in FIG. 2A, the antenna 10 is disposed at a position that does not overlap the wireless power receiving unit 8 and the LED 9 when viewed from the direction of the arrow Ar1. The antenna 10 is located inside each of the window portion 11A and the window portion 11B. Therefore, since data is transferred through the two windows 11A and 11B, the radiation range of the antenna 10 can be expanded.
Note that, when the radiation characteristic of the antenna 10 can be sufficiently obtained only by the window portion 11A, the housing 7 may not have the window portion 11B. In this case, the window portion of the wireless power receiving unit 8, the LED 9, and the antenna 10 can be shared by one window portion 11A. Therefore, it can further suppress that the intensity | strength of the housing | casing 7 falls.

Here, 11 A of window parts are comprised with the material which has a light transmittance so that a user can visually recognize the light of LED9. For example, the window portion 11A uses resin, fiber reinforced resin, or the like, and all or part of the window portion 11A is a light transmission portion.
When a part of the window portion 11A is used as a light transmitting portion, it can be configured by integrally molding a light transmissive material and a non-light transmissive material by different material molding or the like. Or you may comprise by shape | molding separately the material with a light transmittance, and the material without a light transmittance, and joining both by an adhesive agent, an industrial tape, or ultrasonic welding.

When all of the window portion 11A is made of a light-transmitting material, it is desired to transmit light by arranging a coating, printing, light-shielding sheet or the like on the outer surface or inner surface of the window portion 11A. It is possible to prevent transmission at a position where there is no light, and to adjust the amount of transmitted light.
On the other hand, the window part 11B does not function as a window part of the LED 9. Therefore, the window portion 11B does not need to be made of a light transmissive material, and at least a part of the window portion 11B may be a non-conductive material.
Further, the window portions 11A and 11B are set to appropriate thicknesses so that the efficiency of transferring power and data is not significantly reduced. Further, the window portion 11A is set to a thickness suitable for transmitting the light of the LED 9.

  Further, in order to provide the windows 11A and 11B in the housing 7, the windows 11A and 11B are joined to the housing 7 with an adhesive, industrial tape, or the like, or fastened with screws or the like. At this time, the waterproofness can be improved by interposing a waterproof packing between the window portions 11A and 11B and the housing 7, or attaching it with a waterproof double-sided tape or the like. Moreover, you may comprise the housing | casing 7 by shape | molding integrally by the outsert shaping | molding which incorporated the window parts 11A and 11B in the housing | casing 7, and dissimilar-materials shaping | molding. By integrally molding, the interface strength between the housing 7 and the window portions 11A and 11B is improved, and the strength of the radiation imaging apparatus 100 can be improved.

  Thus, by arranging the wireless power receiving unit 8 and the LED 9 so as to be in contact with the inner side surface of one window portion 11A, the window unit of the wireless power receiving unit 8 and the window unit of the LED 9 can be shared. The number of windows provided in the housing 7 can be reduced. Further, by arranging the wireless power receiving unit 8, the LED 9, and the antenna 10 inside one window unit 11A, the window unit of the wireless power receiving unit 8, the window unit of the LED 9, and the window unit of the antenna 10 are made common. The number of windows provided in the housing 7 can be reduced. Therefore, it can suppress that the intensity | strength of the housing | casing 7 falls. Further, when viewed from the direction orthogonal to the outer surface of the window portion 11A, the wireless power receiving portion 8 is arranged so as to overlap the window portion 11A so that the wireless power receiving portion 8 receives power. Efficiency can be improved. Similarly, the visibility of the LED 9 can be improved by arranging the LED 9 so as to overlap the window portion 11A. Similarly, by arranging the antenna 10 so as to overlap the window portion 11A, the efficiency of data transfer by the antenna 10 can be improved.

  In the present embodiment, the case where the wireless power receiving unit 8, the LED 9, and the antenna 10 are arranged in one window portion 11A has been described. However, the present invention is not limited to this, and any one of the LED 9 and the antenna 10 and the wireless power receiving unit 8 May be arranged.

  Next, a radiation imaging apparatus 110 as a modification of the first embodiment will be described with reference to FIGS. 3 and 4. The radiographic apparatus 100 shown in FIGS. 1 and 2 has a configuration in which the bottom part 72 has a window 11A and the side part 73 has a window part 11B, but the radiographic apparatus 110 shown in FIGS. 3 and 4 is inclined. The portion 74 has a window portion 11C. The same components as those in FIGS. 1 and 2 are denoted by the same reference numerals.

FIG. 3A is an external view illustrating an example of the radiation imaging apparatus 110 viewed from the incident direction of radiation. FIG. 3B is an external view showing an example of the radiation imaging apparatus 110 viewed from the opposite side of FIG. Fig.4 (a) is sectional drawing which looked at the cross section cut along the II-II line in Fig.3 (a) from the arrow direction. FIG.4 (b) is the enlarged view which expanded the periphery of LED9 among Fig.4 (a).
The housing 7 of the radiation imaging apparatus 110 of the present embodiment has an inclined portion 74 between the bottom portion 72 and the side portion 73. The inclined portion 74 functions as a connecting portion that continuously connects the bottom portion 72 and the side portion 73. Here, “continuously connected” means that the bottom 72 or the side portion 73 is not interposed again between the bottom portion 72 and the side portion 73.
The inclined portion 74 is inclined with respect to the bottom portion 72 and the side portion 73. The inclined portion 74 is formed continuously over substantially the entire circumference of the housing 7. Moreover, as shown to Fig.4 (a), the inclination part 74 is a substantially plate shape where the surface (outer surface) exposed outside is substantially flat.

  The housing 7 of the present embodiment has one window portion 11C. The window portion 11 </ b> C is disposed on the short side of the rectangular housing 7 and at the approximate center of the length in the direction along the short side. Further, as shown in FIG. 4A, the window portion 11 </ b> C is formed across the bottom portion 72 and the side portion 73 of the housing 7. Specifically, the window portion 11 </ b> C has a substantially plate-like first portion 111 </ b> C that is continuous with the inclined portion 74 and substantially parallel to the inclined portion 74. The window portion 11 </ b> C includes a substantially plate-like second portion 112 </ b> C that is continuous to the bottom portion 72 and substantially parallel to the bottom portion 72, and a substantially plate-like third portion that is continuous to the side portion 73 and substantially parallel to the side portion 73. 113C.

  As shown in FIGS. 4A and 4B, the wireless power receiving unit 8, the LED 9, and the antenna 10 are arranged inside the window portion 11C. The wireless power receiving unit 8, the LED 9, and the antenna 10 are disposed so as to overlap the window unit 11C when viewed from any of the arrow Ar1 direction and the arrow Ar2 direction shown in FIG. Further, when viewed from a direction orthogonal to the outer surface of the first part 111C, the wireless power receiving unit 8 and the LED 9 are arranged so as to overlap with the first part 111C. Further, when viewed from a direction orthogonal to the outer surface of the second part 112C, the antenna 10 is arranged so as to overlap the second part 112C. Specifically, the wireless power receiving unit 8 and the LED 9 are arranged along the inner side surface of the first part 111C, and the antenna 10 is arranged along the inner side surface of the second part 112C. Accordingly, the window portion 11C functions as a window portion for the wireless power receiving portion 8, a window portion for the LED 9, and a window portion for the antenna 10. Similar to FIG. 2 described above, the wireless power receiving unit 8 and the LED 9 are configured to overlap each other.

  In this manner, by arranging the wireless power receiving unit 8, the LED 9, and the antenna 10 in one window unit 11C, the window unit of the wireless power receiving unit 8, the window unit of the LED 9, and the window unit of the antenna 10 can be made common. In addition, the number of windows provided in the housing 7 can be reduced. Therefore, it can suppress that the intensity | strength of the housing | casing 7 falls. Moreover, since the window part 11C is located over the bottom part 72 and the side part 73, compared with the case where the window part 11C is formed only in the bottom part 72 or the side part 73, the wireless power receiving part 8 can receive power widely. At the same time, the visibility of the LED 9 and the radiation characteristics of the antenna 10 can be improved.

In addition, although this embodiment demonstrated the case where the wireless power receiving part 8 and LED9 were overlapped and comprised, it is not restricted to this case. For example, a configuration in which the wireless power reception unit 8 and the antenna 10 overlap, a configuration in which the LED 9 and the antenna 10 overlap, and a configuration in which the wireless power reception unit 8, the LED 9, and the antenna 10 all overlap may be employed. By comprising in this way, space saving can be achieved and the size of window part 11A, 11B, 11C can be made smaller.
In the above-described modification, the case where the window portion 11C has the first portion 111C has been described. However, the present invention is not limited to this case, and the second portion 112C and the second portion 112C do not have the first portion 111C. The three portions 113C may be formed continuously.

Here, when the wireless power receiving unit 8 and the antenna 10 are close to each other, the operations may interfere with each other and malfunction. Therefore, the following method for suppressing interference may be applied.
First, in the radiation imaging apparatuses 100 and 110, the frequency band used when the wireless power receiving unit 8 wirelessly receives power is different from the frequency band used when the antenna 10 wirelessly transfers data. Set to. As described above, the wireless power receiving unit 8 and the antenna 10 are set so that the frequency bands are different from each other, whereby interference with each other can be suppressed.

  Secondly, the control board 2 of the radiation imaging apparatuses 100 and 110 controls the wireless power receiving unit 8 and the antenna 10 so as not to operate simultaneously, the period when the power is received wirelessly, and the antenna 10 transfers data. Do not overlap the period when you do. Specifically, the control board 2 performs control so that the wireless power receiving unit 8 does not receive power wirelessly during a period in which data is transferred to the outside by the antenna 10. On the other hand, the control board 2 performs control so that the wireless power receiving unit 8 receives power wirelessly only during a period in which data is not transferred by the antenna 10. In this way, by controlling the wireless power receiving unit 8 and the antenna 10 so as not to operate simultaneously, interference with each other's operation can be suppressed. Therefore, stable data transfer is possible and the efficiency of wireless power reception can be improved.

(Second Embodiment)
The radiation imaging apparatus 120 in 2nd Embodiment is demonstrated using FIG.
FIG. 5A is a cross-sectional view illustrating an example of the radiation imaging apparatus 120. FIG.5 (b) is the enlarged view which expanded the periphery of LED9 among Fig.5 (a). In addition, the same code | symbol is attached | subjected to the structure similar to 1st Embodiment.

  The radiation imaging apparatus 120 includes a light shielding sheet 12 positioned between the LED 9 and the radiation detection panel 1. The light shielding sheet 12 corresponds to an example of a light shielding layer. The light shielding sheet 12 is larger than the wireless power receiving unit 8 and is disposed inside the window portion 11 </ b> A so as to cover the wireless power receiving unit 8 from the inside of the housing 7. Here, since the LED 9 is located between the wireless power receiving unit 8 and the inner side surface of the window portion 11 </ b> A, the light shielding sheet 12 covers the LED 9 from the inside of the housing 7 through the wireless power receiving unit 8.

The light shielding sheet 12 shields the light from the LED 9 from reaching the radiation detection panel 1. As described above, in the radiation detection panel 1, the phosphor layer 1b emits light by the incident radiation, and the photoelectric conversion element on the sensor substrate 1a converts the emitted light into an electric signal. Therefore, if the light of the LED 9 enters from the periphery of the radiation detection panel 1, an unintended influence is exerted on the radiation image.
By disposing the light shielding sheet 12 between the LED 9 and the radiation detection panel 1, the light of the LED 9 can be prevented from reaching the radiation detection panel 1. Further, since the light shielding sheet 12 is disposed inside the window portion 11A, in the region where the light shielding sheet 12 is disposed in the window portion 11A, it is possible to prevent light from being transmitted from the outside and prevent light leakage.

  The light shielding sheet 12 may be a magnetic sheet having magnetism. By using the magnetic sheet, a part of the magnetic field generated when receiving power wirelessly can be changed to the direction of the magnetic field along the magnetic sheet, and the invasion of the magnetic field into the radiation imaging apparatus 100 is suppressed. be able to. In addition, when there is a metal material or the like in the radiation imaging apparatus 100, it is possible to suppress the influence of a repulsive magnetic field that repels a magnetic field generated by the metal material when receiving power wirelessly. Accordingly, the efficiency of wireless power reception can be improved. Moreover, the influence of the magnetic field on the radiation detection panel 1 and the control board 2 can be suppressed, and noise in the radiation image can be reduced.

(Third embodiment)
A radiation imaging apparatus 130 according to the third embodiment will be described with reference to FIGS. 6 and 7.
FIG. 6A is an external view showing an example of the radiation imaging apparatus 130 viewed from the incident direction of radiation. FIG. 6B is an external view showing an example of the radiation imaging apparatus 130 viewed from the opposite side of FIG. Fig.7 (a) is sectional drawing which looked at the cross section cut along the III-III line | wire in Fig.6 (a) from the arrow direction. FIG.7 (b) is the enlarged view which expanded the periphery of LED9 among Fig.7 (a). In addition, the same code | symbol is attached | subjected to the structure similar to 1st Embodiment.

The housing 7 of the radiation imaging apparatus 130 according to the present embodiment includes a first inclined portion 74 and a second inclined portion 75.
The first inclined portion 74 is located between the bottom portion 72 and the side portion 73. The first inclined portion 74 functions as a connecting portion that continuously connects the bottom portion 72 and the side portion 73. The first inclined portion 74 is inclined with respect to the bottom portion 72 and the side portion 73. The first inclined portion 74 has a substantially plate shape whose surface (outer surface) exposed to the outside is substantially flat.
The second inclined portion 75 is located between the incident portion 71 and the side portion 73. The second inclined portion 75 functions as a connecting portion that continuously connects the incident portion 71 and the side portion 73. The second inclined portion 75 is inclined with respect to the incident portion 71 and the side portion 73. The second inclined portion 75 has a substantially plate shape whose surface (outer surface) exposed to the outside is substantially flat.
The first inclined portion 74 and the second inclined portion 75 are formed continuously over substantially the entire circumference of the housing 7.

  The housing 7 of the present embodiment has one window portion 11D. The window portion 11D is disposed on the short side of the rectangular casing 7 and at the approximate center of the length along the short side. As shown in FIG. 7A, the window portion 11 </ b> D is formed across the incident portion 71 and the bottom portion 72 of the housing 7. Specifically, the window portion 11 </ b> D has a substantially plate-shaped first portion 111 </ b> D that is continuous with the side portion 73 and substantially parallel to the side portion 73. In addition, the window portion 11 </ b> D is continuous with the first inclined portion 74 and is substantially parallel to the first inclined portion 74. The second plate portion 112 </ b> D is substantially parallel to the first inclined portion 74 and the second inclined portion 75. And a substantially plate-like third portion 113D that is substantially parallel to the inclined portion 75. Further, the window portion 11D has a support portion 114D.

As shown to Fig.7 (a), the wireless power receiving part 8, LED9, and the antenna 10 are arrange | positioned inside the window part 11D. 7A, the wireless power receiving unit 8, the LED 9, and the antenna 10 are arranged so as to overlap each other with respect to the window 11D when viewed from any of the arrow Ar1 direction and the arrow Ar2 direction. Further, when viewed from a direction orthogonal to the outer surface of the first part 111D, the wireless power receiving unit 8 and the LED 9 are arranged so as to overlap with the first part 111D. Further, when viewed from a direction orthogonal to the outer surface of the second portion 112D, the antenna 10 is disposed so as to overlap the second portion 112D. Specifically, the wireless power receiving unit 8 and the LED 9 are disposed along the inner surface of the first portion 111D, and the antenna 10 is disposed along the inner surface of the second portion 112D.
Here, since the window portion 11 </ b> D is located across the incident portion 71 and the bottom portion 72, the window portion 11 </ b> D can be viewed from various directions of the radiation imaging apparatus 130. Therefore, the visibility of the LED 9 that functions as an indicator can be improved. In addition, the wireless power receiving unit 8 can widely receive power, and the radiation characteristics of the antenna 10 can be improved.

On the other hand, since the window portion 11D extends over the incident portion 71 and the bottom portion 72, the window portion 11D becomes large, and the strength of the window portion 11D itself may be reduced. In the window portion 11D of the present embodiment, the support portion 114D is disposed between the inner surface of the second portion 112D and the inner surface of the third portion 113D. The support portion 114D has, for example, a substantially columnar shape or a substantially plate shape. Thus, by having support part 114D, the rigidity of window part 11D can be improved and the fall of the intensity | strength of window part 11D can be suppressed.
In addition, the support portion 114 </ b> D is disposed between the LED 9 and the radiation detection panel 1. Therefore, by configuring the support portion 114 </ b> D to have a substantially light-shielding shape, the light from the LED 9 can be shielded from reaching the radiation detection panel 1.

Next, the radiation imaging system 140 will be described.
FIG. 8 is a cross-sectional view illustrating an example of the configuration of the radiation imaging system 140.
The radiation imaging system 140 includes a radiation imaging apparatus 130 and a wireless power transmission unit 150. The radiation imaging apparatus 130 has the same configuration as described above, and is assigned the same reference numerals.
The wireless power transmission unit 150 transmits power to the wireless power receiving unit 8 wirelessly. The wireless power transmission unit 150 includes a wireless power transmission unit 21, a control board 22, and a housing 23.

The wireless power transmitting unit 21 transmits power to the wireless power receiving unit 8 when power is supplied from the outside. The control board 22 controls the wireless power transmission unit 21. The housing 23 accommodates the components of the wireless power transmission unit 150.
Here, when performing wireless charging, the wireless power transmission unit 150 is disposed close to the window 11D of the housing 7 of the radiation imaging apparatus 130 so that the wireless power transmission unit 21 and the wireless power reception unit 8 face each other. To do. In this case, the window 11D of the radiation imaging apparatus 130 is covered with the wireless power transmission unit 150, and the user may not be able to visually recognize the light from the LED 9.

The housing 23 of the wireless power transmission unit 150 of the present embodiment has a light transmission portion 24 at least partially covering the window portion 11D of the housing 7 of the radiation imaging apparatus 130. The light transmission part 24 is substantially plate-shaped and is made of a light-transmitting material. Here, the light transmission unit 24 includes a first transmission unit 241, a second transmission unit 242, and a third transmission unit 243. As for the 1st permeation | transmission part 241, the wireless power transmission part 21 is arrange | positioned inside. The second transmission part 242 and the third transmission part 243 are each continuous with the first transmission part 241 and substantially orthogonal to the first transmission part 241.
Therefore, even when the wireless power transmission unit 150 is disposed in the vicinity of the window portion 11D of the housing 7 of the radiation imaging apparatus 130 in order to perform wireless charging, the user transmits the light of the LED 9 through the light transmission portion 24. It can be visually recognized.

If the window 11D of the housing 7 is covered with the wireless power transmission unit 150 when performing wireless charging, the following method may be applied.
First, as a first example, the control board 2 of the radiation imaging apparatus 130 controls the LED 9 not to emit light when the wireless power receiving unit 8 wirelessly receives power. Thus, power saving can be achieved by not emitting the LED 9.
Secondly, the radiation imaging apparatus 130 is configured to have a plurality of LEDs 9. When the wireless power receiving unit 8 wirelessly receives power, the control board 2 of the radiation imaging apparatus 130 allows the user to visually recognize the LED 9 that is covered by the wireless power transmission unit 150 among the plurality of LEDs 9 without emitting light. Is controlled to emit light. Thus, by controlling the LED 9, the user can confirm the state of the radiation imaging apparatus 130 and can save power.

In the present embodiment, the case where the window portion 11D is formed across the incident portion 71 and the bottom portion 72 of the housing 7 is described. However, the present invention is not limited to this case, and the window portion 11D extends between the side portion 73 and the incident portion 71. It may be formed.
In the present embodiment, the case where the second portion 112D is continuous with the first inclined portion 74 and substantially parallel to the first inclined portion 74 has been described. However, the present invention is not limited to this case, and the second portion 112D is continuous with the bottom portion 72. However, it may be substantially parallel to the bottom 72.
In the present embodiment, the case where the third portion 113D is continuous with the second inclined portion 75 and substantially parallel to the second inclined portion 75 is described. However, the present invention is not limited to this case, and the incident portion 71 and It may be continuous and substantially parallel to the incident portion 71.

As mentioned above, although this invention was explained in full detail based on each embodiment, this invention is not restricted to embodiment mentioned above, The various form of the range which does not deviate from the summary of this invention is also contained in the category of this invention. Furthermore, each embodiment mentioned above is only what shows one embodiment of this invention, and it is also possible to combine each embodiment and the modification of each embodiment suitably.
Note that the wireless charging method described in this embodiment is not particularly limited, and an electromagnetic induction method, an electric field method, a resonance method, and the like can be appropriately selected and applied.
In addition, the wireless data transfer method described in the present embodiment is not particularly limited, and a standard or method related to each wireless transfer, including proximity to long distance and transfer speed, is appropriately selected. Can be applied. Further, a transfer method using visible light, infrared light, or the like may be used.
Moreover, although the case where the housing | casing 7 was the substantially rectangular shape which has a long side and a short side was demonstrated in this embodiment, a square may be sufficient.

  1: Radiation detection panel 2: Control board 3: Flexible circuit board 4: Secondary battery 5: Support base 7: Housing 71: Incident part 72: Bottom part 73: Side part 74: Inclined part (first inclined part) 75: Inclined part (second inclined part) 8: Wireless power receiving part 9: LED 10: Antennas 11A to 11D: Window part 12: Light shielding sheet 24: Light transmitting part 100, 110, 120, 130: Radiation imaging apparatus 140: Radiography system 150: Wireless power transmission unit

Claims (14)

A radiation detection panel for detecting radiation;
A radiography apparatus having a housing for housing the radiation detection panel,
The housing has a window,
A radiation imaging apparatus, wherein at least one of a light source indicating a state of the radiation imaging apparatus and a wireless data transmission unit and a wireless power receiving unit are arranged in the window. At least one of the light source and the wireless data transmission unit, and the wireless power reception unit,
The radiation imaging apparatus according to claim 1, wherein the radiation imaging apparatus is disposed at a position overlapping with the window portion when viewed from a direction orthogonal to the outer surface of the window portion. The housing is
An incident part into which radiation is incident, a bottom located on the opposite side of the incident part, and a plurality of side parts,
The radiation imaging apparatus according to claim 1, wherein the window portion is disposed on at least one of the bottom portion and the side portion. The housing is
An incident part into which radiation is incident, a bottom located on the opposite side of the incident part, and a plurality of side parts,
The radiation imaging apparatus according to claim 1, wherein the window part is disposed over at least two of the incident part, the side part, and the bottom part.   The radiation imaging apparatus according to claim 1, wherein the light source, the wireless data transmission unit, and the wireless power reception unit are arranged in the window unit.   The radiation imaging apparatus according to claim 1, wherein at least a part of the window portion is made of a non-conductive material.   The radiation imaging apparatus according to claim 1, wherein at least a part of the window is made of a light-transmitting material.   The radiation imaging apparatus according to claim 1, further comprising a light shielding layer between the radiation detection panel and the light source.   The radiation imaging apparatus according to claim 1, wherein the light source and the wireless power receiving unit overlap each other.   The radiation imaging apparatus according to claim 1, wherein the light source and the wireless data transmission unit overlap each other.   The radiographic apparatus according to claim 1, further comprising a control unit configured to control the light source not to emit light when the wireless power receiving unit receives power.   The frequency band used when the wireless power receiving unit receives power and the frequency band used when the wireless data transmitting unit transfers data are different from each other. The radiographic apparatus according to the item.   The radiation imaging apparatus according to claim 1, further comprising a control unit configured to control the wireless power reception unit and the wireless data transmission unit so as not to operate simultaneously. The radiation imaging apparatus according to any one of claims 1 to 13,
A radiographic system having a wireless power transmission unit for transmitting electric power to the radiographic apparatus,
The wireless power transmission unit includes:
In the case of transmitting power to the radiation imaging apparatus, at least a part close to the window is made of a light-transmitting material.

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