JP5827857B2 - Radiation image detection device - Google Patents

Description

  The present invention relates to a radiation image detection apparatus.

  X-ray imaging is widely used in fields such as medical diagnosis and non-destructive inspection. In general X-ray photography, a subject is irradiated with X-rays, X-rays that are attenuated at each part of the subject and transmitted through the subject are detected, and an X-ray image of the subject is obtained based on the intensity distribution. Yes.

  As a detection medium for detecting X-rays, for example, a combination of an intensifying screen that emits fluorescence when exposed to X-rays and a film sensitive to the fluorescence, or X-rays when exposed to X-rays is used. Stimulable phosphors (accumulative phosphors) that emit fluorescence corresponding to the latent image by being irradiated with excitation light such as laser light later are used.

  In recent years, flat panel detectors (FPD) that generate digital image data using semiconductor elements that detect X-rays and convert them into electrical signals are also used as detection media. A so-called electronic cassette in which an FPD is housed in a portable housing has been put into practical use.

  The electronic cassette is typically equipped with a battery that supplies operating power to the FPD. The battery is configured to be detachable from the cassette for charging or replacement due to deterioration due to repeated charging and discharging (see, for example, Patent Documents 1 and 2).

  In the cassette described in Patent Document 1, the battery is housed in a battery housing portion provided in the housing, and the opening of the lid that closes the opening of the housing portion is regulated by a slide-type clasp attached to the housing. It is fixed by this.

  In the cassette described in Patent Document 2, the battery is housed in a battery housing portion provided in the housing, and is fixed by joining a battery exterior member that closes the opening of the housing portion to the housing with an electro-releasable adhesive. Is done.

JP 2006-250729 A JP 2009-058733 A

  The external size of the X-ray imaging cassette is determined by the standard, and the casing wall of the cassette is formed to be relatively thin in order to ensure the volume inside the casing that accommodates the FPD and the like. In the cassette described in Patent Document 1, the battery housing portion is provided in the housing, and the clasp constituting the lock mechanism of the battery housed in the battery housing portion is provided on the housing portion provided with the battery housing portion. It is attached to the frame wall. When the battery is installed and the clasp is operated, a force is locally applied to the casing wall to which the clasp is attached. However, the casing wall is bent, and the clasp is manipulated and clamped. Locking with gold may be hindered.

  In the cassette described in Patent Document 2, the battery exterior member constituting the battery locking mechanism is joined to the casing by an electro-releasable adhesive, and can fix the battery without increasing the thickness of the casing wall. However, since the battery exterior member and the casing need to be bonded and peeled off, it is not easy to attach and detach the battery.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a radiological image detection apparatus that can easily attach and detach a battery and can securely fix the battery.

A radiation image detection apparatus according to the present invention includes a radiation image sensor that detects radiation and generates image data, a base that supports the radiation image sensor, and a housing that houses the radiation image sensor and the base. A battery that is housed in a battery housing portion provided in the housing and supplies operating power to the radiation image sensor; and a lock mechanism that locks the battery housed in the battery housing portion. The housing part is recessed in the bottom part of the casing, the base is fixed to the bottom part of the casing, and the lock mechanism has an operation part exposed on an outer surface of the bottom part of the casing, characterized in that it is directly supported and held by the base.

  According to the present invention, since the base is easier to secure rigidity than the housing, the lock mechanism is supported more stably and the battery can be fixed more reliably.

It is a perspective view which decomposes | disassembles and shows the structure of an example of the radiographic image detection apparatus for describing embodiment of this invention. It is a schematic diagram which shows the structure of the radiographic image sensor of the radiographic image detection apparatus of FIG. It is sectional drawing which shows the internal structure of the radiographic image detection apparatus of FIG. It is sectional drawing which expands and shows the structure of the battery accommodating part of the radiographic image detection apparatus of FIG. 1, and its periphery. It is a perspective view which shows the structure of an example of the locking mechanism used for the radiographic image detection apparatus of FIG. It is a schematic diagram which shows operation | movement of the locking mechanism of FIG. It is a perspective view which shows the structure of the other example of a locking mechanism. It is a perspective view which shows the structure of the other example of a locking mechanism. It is a perspective view which shows the structure of the other example of a locking mechanism. It is sectional drawing which shows the structure of the other example of the radiographic image detection apparatus for describing embodiment of this invention. It is a rear view of the radiographic image detection apparatus which shows an example of arrangement | positioning of a locking mechanism. It is a rear view of the radiographic image detection apparatus which shows the other example of arrangement | positioning of a locking mechanism.

  FIG. 1 shows an exploded configuration of an example of a radiological image detection apparatus for explaining an embodiment of the present invention.

  The X-ray image detection apparatus 1 shown in FIG. 1 is a so-called electronic cassette, and includes a FPD 2, a base 3 that supports the FPD 2, a housing 4 that houses the FPD 2 and the base 3, and a battery that supplies operating power to the FPD 2. And 5.

  The housing 4 includes a front member 12 having a substantially rectangular top plate portion 10 and a frame-like side wall portion 11 erected on the four side edges of the top plate portion 10, and the opposite side of the top plate portion 11. A back member 13 that closes the opening of the front member 12 is formed. The front portion 12 material and the back member 13 are combined with each other to form a light-shielded box-shaped closed space, and the FPD 2 and the base 3 are accommodated in the closed space.

  X-rays that have passed through the subject pass through the top plate portion 10 of the front member 12 and enter the FPD 2 housed inside the housing. The top plate 10 is formed of a material having excellent X-ray transmittance, and is typically made of a light metal material such as aluminum or magnesium, carbon fiber reinforced plastics (CFRP: carbon fiber reinforced plastics) in consideration of the strength-weight ratio. ) Or the like is used.

  In the X-ray image detection apparatus 1, the side wall portion 11 of the front member 12 is integrally formed of the same material as the top plate portion 10. By forming the top plate portion 10 and the side wall portion 11 integrally, the strength of the front member 12 is improved, and in particular, resistance to twisting of the top plate portion 10 is improved.

  When the above aluminum or magnesium is used as the material for forming the top plate 10 and the side wall 11, for example, die casting is used, and when carbon fiber reinforced resin is used, the top plate 10 is formed by, for example, compression molding. And the side wall 11 can be formed integrally.

  By forming the top plate portion 10 and the side wall portion 11 integrally, the corner portions at the four corners of the front member 12 can be easily chamfered as in the illustrated example.

  Although the details will be described later, the back member 13 is provided with a battery accommodating portion 14, and the battery 5 is accommodated in the battery accommodating portion 14.

  The back member 13 is also typically formed using a light metal material such as aluminum or magnesium, or a resin material such as CFRP in consideration of the strength-weight ratio.

  FIG. 2 shows the configuration of the FPD 2.

  The FPD 2 includes an image receiving unit 21 in which a plurality of pixels 20 that convert X-rays into electric charges and accumulate them on an active matrix type thin film transistor (TFT) array substrate, and an image receiving unit. A scanning circuit 22 that controls the read timing of charges from the signal 21; a signal processing circuit 23 that reads charges stored in each pixel 20, converts the read charges into image data, and stores the image data; It comprises a data transmission circuit 24 that transmits to the device. The scanning circuit 22 and each pixel 20 are connected by a scanning line 25 for each row, and the signal processing circuit 23 and each pixel 20 are connected by a signal line 26 for each column.

Each pixel 20 is a direct conversion type element that converts X-rays directly into charges in a conversion layer (not shown) such as amorphous selenium and stores the converted charges in a capacitor connected to an electrode below the conversion layer. Can be configured. In addition, each pixel 20 is used to make X-rays once visible light with a scintillator (not shown) made of gadolinium oxide (Gd ₂ O ₃ ), gadolin sulfate (Gd ₂ O ₂ S), cesium iodide (CsI), or the like. It is also possible to configure as an indirect conversion type X-ray detection element that converts and converts the converted visible light into electric charge by a photodiode (not shown) and accumulates it.

  A TFT switch element (not shown) is connected to each pixel 20. A gate electrode of the TFT switch is connected to the scanning line 25, a source electrode is connected to the capacitor, and a drain electrode is connected to the signal line 26. When the TFT switch is turned on by the drive pulse from the scanning circuit 22, the charge accumulated in the capacitor is read out to the signal line 26.

  The signal processing circuit 23 includes an integrating amplifier circuit, an A / D converter, a correction circuit, and an image memory (all not shown). The integrating amplifier circuit integrates the charges output from each pixel 20 via the signal line 26 and converts them into a voltage signal (image signal) and inputs it to the A / D converter. The A / D converter converts the input image signal into digital image data and inputs the digital image data to the correction circuit. The correction circuit performs correction processing such as offset correction and gain correction on the image data, and stores the corrected image data in the image memory.

  Operating power is supplied to each pixel 20 and each circuit 22, 23, 24 from the power supply unit 27 including the battery 5. In addition, the wiring which connects the power supply part 27, each pixel 20, and each circuit 22,23,24 is abbreviate | omitting illustration.

  FIG. 3 shows the configuration of the X-ray image detection apparatus 1 in cross section, and FIG. 4 shows the configuration of the battery housing 14 and its surroundings.

  The FPD 2 has an image receiving unit 21 on the surface of the base 3 facing the top plate 10 and a circuit board 28 on which the scanning circuit 22 (FIG. 2) and the signal processing circuit 23 are mounted on the back surface of the base 3. These are attached to and supported by the base 3. The image receiving unit 21 and the circuit board 28 are connected using a flexible circuit board 29.

  The base 3 includes a base material 30 having relatively high rigidity. In the illustrated example, the base board 3 is further provided with an X-ray shielding material 31 for shielding the circuit board 28 attached to the back surface of the base 3 from X-rays. Is laminated on the base material 30. The base 3 also serves to reinforce the TFT array substrate of the FPD 2 due to its rigidity.

  As the base material 30, for example, a light metal material such as aluminum or magnesium or a resin material such as CFRP can be used in consideration of the strength-weight ratio. Moreover, as the X-ray shielding material 31, for example, a heavy metal material having excellent X-ray absorption ability such as lead, tungsten, and molybdenum can be used.

  The base 3 is fixed to the back member 13 with an appropriate spacer 32 interposed between the base member 3 and the back member 13 so as not to interfere with the battery housing portion 14 provided on the back member 13.

  In the present X-ray image detection apparatus 1, the battery housing portion 14 is configured as a recess formed by molding a part of the back member 13 so as to protrude toward the top plate portion 10 side of the front member 12. . In addition, the battery accommodating part 14 may be comprised by the housing member which has the same recessed part separately from the back member 13, and in that case, the said housing member is suitably attached to the back member 13 in that case. An opening is provided, and the housing member is attached to the opening by an appropriate means such as adhesion.

  One of the side wall portions surrounding the four sides of the battery housing portion 14 is provided with an engagement recess 14 c that engages with a claw 5 a provided on the edge of the battery 5 that faces the battery storage portion 14. The battery accommodating portion 14 is provided on the other side wall portion (in the illustrated example, the side wall portion opposite to the side wall portion provided with the engaging concave portion 14c) excluding the side wall portion provided with the engaging concave portion 14c. A lock mechanism 40 for locking the battery 5 accommodated in the battery is provided. The battery 5 is fixed in the battery housing portion 14 by engaging the claw 5 a with the engagement recess 14 c and being locked by the lock mechanism 40.

  The lock mechanism 40 includes a convex portion 41 that engages with the battery 5 accommodated in the battery accommodating portion 14 and an engaging member 43 provided with an operation portion 42. A window 14b is formed in the side wall portion 14a adjacent to the lock mechanism 40 in the four side walls surrounding the battery housing portion 14, and the convex portion 41 of the engaging member 43 passes through the window 14b. Protrusively inside. Further, the operation portion 42 of the engaging member 43 is exposed to the outer surface of the back member 13 through a window 13 a provided in the back member 13.

  In the X-ray image detection apparatus 1, the base 3 is configured to have higher rigidity than the back member 13 provided with the battery housing portion 14, and the lock mechanism 40 is fixed to the base 3 and the base 3 is supported. The base material 30 and the back member 13 constituting the base 3 are typically formed using a light metal material such as aluminum or magnesium or a resin material such as CFRP. For example, the base material 3 and the back member 13 are the same. When the base 3 is formed thicker than the back member 13, the base 3 can be configured with high rigidity. In general, the X-ray image detection apparatus has an external size determined by the standard, and the front member 12 and the back member 13 are relatively thin in order to secure as much volume as possible inside the housing that accommodates the FPD 2 and the like under the restrictions. It is formed. The base 3 accommodated in the housing having a sufficient volume as described above is easy to be thicker than the front member 12 and the back member 13.

  Note that the dimension of the lock mechanism 40 in the direction perpendicular to the outer surface of the back member 13 is preferably equal to or smaller than the depth of the recess constituting the battery housing portion 14. This is because if the dimension of the lock mechanism 40 is made larger than the depth of the recess, a useless gap is generated between the recessed surface of the recess and the base 3. By making the size of the lock mechanism 40 equal to or smaller than the depth of the recess, as can be seen from FIG. 3, the entire thickness of the X-ray image detection apparatus 1 is the thinnest without generating a useless gap. can do. In other words, in the outer size defined by the standard, the space in the X-ray image detection apparatus can be maximized, and as a result, for example, as described above, the base 3 can be secured with a large thickness, and the impact of dropping can be prevented. There are advantages such as a strong X-ray image detection device.

  FIG. 5 shows the configuration of the lock mechanism 40.

  The lock mechanism 40 includes the engagement member 43, the guide rail 44, and the spring 45. The engaging member 43 is configured as a slider that moves along the guide rail 44, and the guide rail 44 supports the slider 43 so as to be movable. The spring 45 biases the slider 43 that moves along the guide rail 44 in the moving direction. In the above configuration, the guide rail 44 is fixed to the base 3, and the lock mechanism 40 is supported by the base 3.

  The guide rail 44 is substantially parallel to the outer surface (corresponding to the bottom of the housing) of the back member 13 provided with the battery housing portion 14 and along the side wall portion 14a of the battery housing portion 14 adjacent to the lock mechanism 40. It extends in the linear direction (x-axis direction in the figure). The slider 43 also moves in a linear direction (x-axis direction in the drawing) along the side wall portion 14a.

  A concave portion 46 that engages with the convex portion 41 of the slider 43 is provided on the side portion of the battery 5 that faces the side wall portion 14 a of the battery housing portion 14 that is adjacent to the lock mechanism 40. When the slider 43 is on one end side (engagement position P1) of the guide rail 44, the convex portion of the slider and the concave portion of the battery are engaged, and the slider is on the other end side (non-engagement side) of the guide rail. When in the alignment position P2), the engagement between the convex portion 41 of the slider 43 and the concave portion 46 of the battery 5 is released. The spring 45 urges the slider 43 so that the slider 43 moves from the non-engagement position toward the engagement position. The locking mechanism 40 locks the battery 5 by holding the convex portion 41 of the slider 43 with the concave portion 46 of the battery 5 and holds the battery 5 in the battery housing portion 14.

  FIG. 6 shows the operation of the lock mechanism 40.

  When the battery 5 is attached to the battery housing portion 14, first, the slider 43 is biased by the spring 45 and is in the engagement position P1 (FIG. 6A). When the battery 5 is inserted into the battery housing portion 14, the convex portion 41 of the slider 43 abuts on a shoulder portion 47 that is continuous with the concave portion 46 of the battery 5. A contact surface 41a of the convex portion 41 with the shoulder portion 47 is an inclined surface having a gradient in the x-axis direction, and the shoulder portion 47 slides on the inclined surface 41a of the convex portion 41 as the battery 5 is inserted. While moving, the slider 43 is pushed toward the non-engagement position P2 against the bias of the spring 45 (FIG. 6B). When the battery 5 is completely inserted into the battery housing portion 14, the convex portion 41 relatively gets over the shoulder portion 47 and reaches a position facing the concave portion 46 in the moving direction of the slider 43, where the slider 43 is moved to the spring 45. Is automatically pushed back to the engagement position P1, and the convex portion 41 enters the concave portion 46 and engages with the concave portion 46 (FIG. 6C). Moreover, when pushing in forcibly, the presence of the inclined surface 41a distributes the force and prevents damage.

  When the battery 5 is removed from the battery housing part 14, the operation part 42 of the slider 43 exposed on the outer surface of the back member 13 is operated by the user, and the slider 43 is moved from the engagement position P1 to the non-engagement position P2. The Thereby, the engagement between the convex portion 41 of the slider 43 and the concave portion 46 of the battery 5 is released, and the battery 5 becomes removable. When the battery 5 is removed and the operation of the operation unit 42 is released, the slider 43 is urged by the spring 45 and automatically pushed back to the engagement position P1.

  FIG. 7 shows a configuration of another example of the lock mechanism.

  The locking mechanism 50 shown in FIG. 7 is provided with a guide rail 44 extending in a linear direction (y-axis direction in the drawing) substantially orthogonal to the side wall portion 14a of the battery housing portion 14 adjacent to the locking mechanism. 43 also differs from the lock mechanism 40 shown in FIG. 5 in that it moves in a linear direction (y-axis direction in the drawing) substantially orthogonal to the side wall portion 14a. Other configurations are common to the lock mechanism shown in FIG.

  When the battery 5 is mounted in the battery housing 14 part, first, the slider 43 is biased by the spring 45 and is in the engagement position P1. When the battery 5 is inserted into the battery housing portion 14, the convex portion 41 of the slider 43 abuts on a shoulder portion 47 that is continuous with the concave portion 46 of the battery 5. A contact surface 41a of the convex portion 41 with the shoulder portion 47 is an inclined surface having a gradient in the y-axis direction, and the shoulder portion 47 slides on the inclined surface 41a of the convex portion 41 as the battery 5 is inserted. While moving, the slider 43 is pushed toward the disengagement position P2 against the bias of the spring 45. When the battery 5 is completely inserted into the battery housing portion 14, the convex portion 41 relatively gets over the shoulder portion 47 and reaches a position facing the concave portion 46 in the moving direction of the slider 43, where the slider 43 is moved to the spring 45. And is automatically pushed back to the engagement position P1, and the convex portion 41 enters the concave portion 46 and engages with the concave portion 46.

  FIG. 8 shows a configuration of another example of the lock mechanism.

  The lock mechanism 60 shown in FIG. 8 includes an engaging member 63, a shaft member 64, and a spring 65. The engaging member 63 is configured as a rotating member that rotates around the axis of the shaft member 64, and includes a supported portion 63a supported by the shaft member 64 and an arm portion 63b extending from the supported portion 63a. 61 and the operation part 62 are provided in the front-end | tip part of the arm part 63b. The spring 65 urges the engaging member 63 that rotates about the shaft member 64 from the non-engaging position P2 toward the engaging position P1 in the rotation direction. In the above configuration, the shaft member 64 is fixed to the base 3, and the lock mechanism 60 is supported by the base 3.

  The shaft member 64 is provided so as to extend in a direction (z-axis direction in the drawing) substantially orthogonal to the outer surface of the back member 13 provided with the battery housing portion 14. Therefore, the engaging member 63 rotates and moves in an arc direction around the shaft member 64 in a plane (xy plane) substantially parallel to the outer surface of the back member 13.

  When the battery 5 is mounted in the battery housing portion 14, first, the engaging member 63 is biased by the spring 65 and is in the engaging position P1. When the battery 5 is inserted into the battery housing portion 14, the convex portion 61 of the engaging member 63 comes into contact with the shoulder portion 47 connected to the concave portion 46 of the battery. The contact surface 61a of the convex portion 61 with the shoulder portion 47 is an inclined surface having a gradient in the y-axis direction, and the shoulder portion 47 slides on the inclined surface 61a of the convex portion 61 as the battery 5 is inserted. While moving, the engaging member 63 is pushed toward the non-engaging position P2 against the bias of the spring 65. When the battery 5 is completely inserted into the battery accommodating portion 14, the convex portion 61 gets over the shoulder portion 47 relatively and reaches a position facing the concave portion 46 in the rotation direction of the engaging member 63, where the engaging member 63 is urged by the spring 65 and automatically pushed back to the engagement position P <b> 1, and the convex portion 61 enters the concave portion 46 and engages with the concave portion 46.

  The locking mechanism is not limited to the above-described ones. For example, the locking mechanism (slider 43 and guide rail 44 and spring 45) shown in FIG. 5 and the locking mechanism (engagement member 63 and shaft member 64 aligned) shown in FIG. The structure shown in FIG. 9 can also be obtained by combining with the spring 65). The lock mechanism 70 shown in FIG. 9 includes an engaging member 63, a shaft member 64 extending in the z-axis direction, a slider 43, a guide rail 44 extending in the x direction, and a first spring 45 and a second spring 65. Has been. The slider 43 moves along the guide rail 44, and the guide rail 44 supports the slider 43 so as to be movable. The shaft member 64 is fixed to the slider 43 and moves along the guide rail 44 integrally with the slider 43. The engaging member 63 is configured as a rotating member that rotates around the axis of the shaft member 64, and includes a supported portion 63a supported by the shaft member 64 and an arm portion 63b extending from the supported portion 63a. 61 and the operation part 62 are provided in the front-end | tip part of the arm part 63b. The first spring 45 biases the slider 43 moving along the guide rail 44 in the moving direction from the non-engagement position P2a toward the engagement position P1a, and the second spring 65 is centered on the shaft member 64. The engaging member 63 that rotates in the forward direction is biased in the rotational direction from the non-engaging position P2b toward the engaging position P1b. In the above configuration, the guide rail 44 is fixed to the base 3, and the lock mechanism 70 is supported by the base 3.

  In the example shown in FIG. 9, the engaging member 63 is adjacent to the rotational movement in the arc direction around the shaft member 64 in a plane (xy plane) substantially parallel to the outer surface of the back member 13, and the lock mechanism 70. It moves in a substantially linear direction inclined with respect to the side wall portion 14a by combining with a movement in the linear direction (x-axis direction) along the side wall portion 14a of the battery housing portion 14.

  According to the lock mechanisms 40, 50, 60, and 70 shown in FIGS. 5, 7, 8, and 9, the accommodating portion 14 is provided when the battery 5 is attached to the battery accommodating portion 14. Even when a local external force acts on the back member 13 and the back member 13 bends, these lock mechanisms are stably supported by the base 3 having higher rigidity than the back member 13, and the operation thereof is Keeps smooth. Thereby, the battery 5 can be reliably locked by the lock mechanism. In particular, in these lock mechanisms, the engagement members 43 and 63 are automatically returned to the engagement position by being biased by the springs 45 and 65, and the battery 5 is locked. In order to keep the operation smooth, it is useful to stably support the lock mechanism.

  In the lock mechanisms 40, 50, 60, 70, the engagement members 43, 63 are automatically returned to the engagement position by being biased by the springs 45, 65 to lock the battery 5. Thus, the mounting of the battery 5 is completed with one action of pushing the battery 5 into the battery accommodating portion 14, and the handling becomes easy.

  In each of the lock mechanisms 40, 50, 60, and 70, the guide rail 44 or the shaft member 64 is fixed to the base 3 and directly supported by the base 3, but the lock mechanism described below is , Fixed to the back member 13 and indirectly supported by the base 3 through the back member 13.

  FIG. 10 shows a configuration of a modified example of the lock mechanism shown in FIG.

  The lock mechanism 80 shown in FIG. 10 is adjacent to the side wall portion 14 a of the battery housing portion 14 in the battery housing portion 14, and the guide rail 44 constituting the lock mechanism 80 is the bottom wall portion 14 b of the housing portion 14. It is fixed to. The bottom wall portion 14b of the battery housing portion 14 to which the guide rail 44 is fixed is supported by the base 3 on the surface opposite to the side on which the guide rail 44 is fixed. In the above configuration, the lock mechanism 80 is indirectly supported by the base 3 via the back member 13.

  In addition, an appropriate exterior member 81 provided with an opening 81a through which the battery 5 is inserted and removed, and windows 81b and 81c that expose the operation portion 42, respectively, are fixed to the opening of the battery housing portion 14. The lock mechanism 80 is covered with the exterior member 81.

  The operation of the locking mechanism 80 is the same as the operation of the locking mechanism 40 shown in FIG.

  According to the lock mechanism 80, the lock mechanism 80 is supported by the base 3 in addition to the back member 13 even when the back member 13 is bent when the battery 5 is mounted in the battery housing 14. Therefore, it is supported more stably than the case where it is supported only by the back member 13, and its operation is kept smooth. Thereby, the battery 5 can be reliably locked by the lock mechanism 80. In the configuration in which the lock mechanism 80 is indirectly supported by the base 3 via the back member 13, the base 3 does not necessarily need to be higher in rigidity than the back member 13. From the viewpoint of stable support, the base 3 is preferably highly rigid.

  As for the lock mechanism 50 shown in FIG. 7 and the lock mechanism 70 shown in FIG. 9 as well, by fixing the guide rail 44 to the bottom wall portion 14b of the accommodating portion 14 and supporting the bottom wall portion 14b by the base 3, It can be configured to be indirectly supported by the base 3 via the back member 13. Further, with respect to the lock mechanism 60 shown in FIG. 8, the shaft member 64 is fixed to the bottom wall portion 14 b of the accommodating portion 14, and the bottom wall portion 14 b is supported by the base 3, so In particular, it can be configured to be supported by the base 3.

  FIG. 11 is a rear view of the X-ray image detection apparatus 1 and shows an example of the arrangement of the lock mechanism.

  In the example shown in FIG. 11, two lock mechanisms 40 are used, and these lock mechanisms 40 are provided on the side wall portion opposite to the side wall portion of the battery housing portion 14 with which the claw 5 a of the battery 5 is engaged. It is installed next to it.

  FIG. 12 is a rear view of the X-ray image detection apparatus 1 and shows another example of the arrangement of the lock mechanism.

  In the example shown in FIG. 12, two lock mechanisms 50 are used, and these lock mechanisms 50 are a pair of side walls that are parallel to each other and intersect with the side walls of the battery housing portion 14 with which the claws 5 a of the battery 5 are engaged. Next to each part.

  As shown in FIGS. 11 and 12, the lock mechanism locks the edge of the battery 5 opposite to the edge of the battery 5 provided with the claw 5a, that is, the claw 5a of the battery 5 and the battery housing part 14. It is preferable that it is as far as possible from the position of engagement with the side wall portion. By separating the battery 5, the force for stopping the battery 5 may be small, and the battery 5 is less likely to come off when the cassette is moved and carried. In the illustrated example, two locking mechanisms are provided, but the number of locking mechanisms is not limited to two, and one or three or more locking mechanisms may be provided.

  The battery locking mechanism described above is particularly convenient for medical electronic cassettes. Since the electronic cassette can continually shoot compared to the conventional cassette, it does not use a single cassette to shoot a single patient as in the past, but shoot with a single electronic cassette for multiple patients. Can do. For this reason, it is only necessary to have one electronic cassette in one shooting room. However, if the battery runs out, it will be inconvenient if it cannot be used for charging time, so multiple batteries are prepared for one electronic cassette. It is usually considered to shoot one after another when it runs out. In the first place, electronic cassettes are medical devices, and tend to be expensive compared to general consumer devices. That is why we have to replace multiple batteries for one electronic cassette. one of. For this reason, it is assumed that the number of times of replacement of the battery is large, and the operational convenience of the fact that the attachment / detachment is simple is very large. Also, if the battery is accidentally removed during radiography, radiography will fail and the patient will be exposed to unnecessary X-ray exposure, so it is important to prevent this. In view of these, if the locking mechanism of the present invention that can be easily attached and detached and does not come off accidentally is provided, the working efficiency and safety of photographing are improved and the convenience is remarkably improved.

  In the above description, the case where general X-rays are used as radiation has been described, but the present invention is not limited to X-rays, and radiation other than X-rays such as α-rays and γ-rays can be used. It is.

  As described above, the present specification discloses the following radiation image detection apparatuses (1) to (13).

(1) A radiation image sensor that detects radiation and generates image data, a base that supports the radiation image sensor, a housing that houses the radiation image sensor and the base, and a housing A battery housed in a battery housing section for supplying operating power to the radiation image sensor; and a lock mechanism for locking the battery housed in the battery housing section, wherein the lock mechanism is supported by the base. A radiological image detection apparatus.
(2) In the radiological image detection apparatus according to (1), the battery housing portion is disposed at a bottom portion of the casing, and the base is more rigid than the bottom portion of the casing. Radiation image detection device.
(3) The radiological image detection apparatus according to (1) or (2), wherein the lock mechanism is provided on the base.
(4) In the radiological image detection apparatus according to (1) or (2), the lock mechanism is provided at a bottom portion of the housing, and the bottom portion provided with the lock mechanism is supported by the base. A radiological image detection apparatus characterized by comprising:
(5) In the radiological image detection apparatus according to any one of (1) to (4), the lock mechanism includes an engagement member that engages with the battery, and an engagement position between the engagement member and an engagement position. A radiological image detection apparatus comprising: a support portion that is movably supported between the alignment positions; and a biasing member that biases the engagement member toward the engagement position.
(6) In the radiological image detection apparatus according to (5), the support portion includes a support member that supports the engagement member so as to be linearly movable, and the support member is provided on the base. A radiological image detection apparatus characterized by the above.
(7) In the radiological image detection apparatus according to (5), the support portion includes a support member that supports the engagement member so as to be linearly movable, and the support member is provided at a bottom portion of the housing.
The radiographic image detection apparatus, wherein the bottom portion provided with the support member is supported by the base.
(8) In the radiological image detection apparatus according to (5), the support portion includes a support member that supports the engagement member so as to be rotatable, and the support member is provided on the base. A radiographic image detection device.
(9) In the radiological image detection apparatus according to (5), the support portion includes a support member that rotatably supports the engagement member, and the support member is provided at a bottom portion of the housing. The radiographic image detection apparatus, wherein the bottom portion provided with the support member is supported by the base.
(10) In the radiological image detection apparatus according to (5), the support portion includes a first support member that rotatably supports the engagement member, and a second support member that linearly moves the first support member. A radiographic image detection apparatus, wherein the second support member is provided on the base.
(11) In the radiological image detection apparatus according to (5), the support section supports a first support member that rotatably supports the engagement member, and a second support that supports the first support member to be linearly movable. A radiation member, wherein the second support member is provided at a bottom portion of the housing, and the bottom portion provided with the second support member is supported by the base. Image detection device.
(12) In the radiological image detection device according to any one of (1) to (11), the battery housing portion is recessed in a bottom portion of the housing, and a depth direction of the battery housing portion The size of the locking mechanism relating to the radiation image detecting device is less than the depth of the battery accommodating portion.
(13) In the radiological image detection apparatus according to any one of (1) to (12), the battery includes a claw that engages with a side wall portion surrounding the battery housing portion at an edge portion, The locking mechanism is a radiological image detection apparatus that locks an edge of the battery opposite to an edge of the battery provided with the claw.

1 X-ray image detection device 2 FPD (X-ray image sensor)
DESCRIPTION OF SYMBOLS 3 Base 4 Case 5 Battery 10 Top plate part 11 Side wall part 12 Front member 13 Back member 14 Battery accommodating part 40 Locking mechanism

Claims (9)

A radiation image sensor that detects radiation and generates image data;
A base supporting the radiation image sensor;
A housing for housing the radiation image sensor and the base;
A battery that is housed in a battery housing provided in the housing and supplies operating power to the radiation image sensor;
A locking mechanism for locking the battery housed in the battery housing portion,
The battery housing is recessed in the bottom of the housing;
The base is fixed to the bottom of the housing;
The locking mechanism has an operating portion exposed to the outer surface of the bottom portion of the housing, the radiation image detecting apparatus characterized by being directly supported and held by the base. The radiological image detection apparatus according to claim 1,
The radiographic image detection apparatus according to claim 1, wherein the base has higher rigidity than the bottom of the casing. The radiological image detection apparatus according to claim 1 or 2,
The radiological image detection apparatus, wherein the lock mechanism is provided on the base. In the radiographic image detection apparatus of any one of Claim 1 to 3 ,
The lock mechanism includes an engagement member that engages with the battery, a support portion that supports the engagement member so as to be movable between an engagement position and a non-engagement position, and the engagement member at the engagement position. A radiation image detection apparatus comprising a biasing member biasing toward the head. In the radiographic image detection apparatus of Claim 4 ,
The support portion includes a support member that supports the engagement member so as to be linearly movable,
The radiographic image detection apparatus, wherein the support member is provided on the base. In the radiographic image detection apparatus of Claim 4 ,
The support part includes a support member that rotatably supports the engagement member,
The radiographic image detection apparatus, wherein the support member is provided on the base. In the radiographic image detection apparatus of Claim 4 ,
The support portion includes a first support member that supports the engagement member so as to be rotatable, and a second support member that supports the first support member so as to be linearly movable.
The radiographic image detection apparatus, wherein the second support member is provided on the base. The radiological image detection apparatus according to any one of claims 1 to 7 ,
The battery housing is recessed in the bottom of the housing,
The radiographic image detection apparatus, wherein a dimension of the lock mechanism in a depth direction of the battery housing portion is equal to or less than a depth of the battery housing portion. The radiological image detection apparatus according to any one of claims 1 to 8 ,
The battery has a claw at its edge that engages with a side wall surrounding the battery housing,
The locking mechanism is a radiological image detection apparatus that locks an edge of the battery opposite to an edge of the battery provided with the claw.

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