Flexible radiation detector

Abstract

The present invention relates to a flexible radiation detector and, more specifically, to a flexible radiation detector capable of limiting bending and protecting internal components from external impact or load. The present invention provides a flexible radiation detector comprising: a bendable panel unit having a detection panel for radiation detection; and a bendable protective cover provided on one surface side of the panel unit along the longitudinal direction of the panel unit to protect the panel unit, wherein the protective cover comprises a plurality of cover units connected to each other, and maximum bending of the panel unit is limited by the plurality of cover units.

Description

Variable radiation detector

[0001] The present invention relates to a variable radiation detector, and more specifically, to a variable radiation detector capable of limiting bending and protecting internal components from external impact or load.

[0002] Non-destructive testing refers to a method of inspecting the material, performance, condition, and presence or absence of defects without destroying the object being inspected. By using non-destructive testing methods, internal structures or defects can be identified without destroying the object being inspected. Examples include quality inspection of various industrial products in industrial settings, verification of defects in buildings, and checking for wear and corrosion conditions.

[0003] When performing non-destructive testing using X-rays among the above non-destructive testing methods, hollow cylindrical objects, such as pipes, can be the inspection targets; therefore, a variable radiation detector is presented for the non-destructive testing of cylindrical or curvature-forming objects. For example, Korean Patent Publication No. 10-2024-0153255 discloses a variable detector comprising a detection panel for radiation detection and a protective panel on one side of the detection panel.

[0004] However, these prior art technologies have the disadvantage that it is difficult to prevent the detection panel from bending rapidly in a localized area, and it is difficult to sufficiently protect the variable detector from external impacts or loads.

[0005] The present invention aims to provide a variable radiation detector capable of preventing localized sudden deformation of a detection panel that detects radiation and effectively protecting the detection panel from external impacts or loads.

[0006] The present invention provides a variable radiation detector comprising: a bendable panel portion having a detection panel for radiation detection; and a bendable protective cover provided on one side of the panel portion along the longitudinal direction of the panel portion to protect the panel portion, wherein the protective cover comprises a plurality of interconnected cover units, and the maximum bending of the panel portion is limited by the plurality of cover units.

[0007] In one embodiment, the variable radiation detector may include a detector body comprising a panel portion and further having a main frame portion coupled to one side of the panel portion.

[0008] In addition, a cover connecting part connecting at least one of the above-mentioned cover units and the main frame part may be further provided.

[0009] In one embodiment, the cover unit includes a horizontal portion formed along the width direction of the panel portion and first and second vertical portions formed along the thickness direction of the panel portion on both sides of the horizontal portion.

[0010] In one embodiment, the plurality of cover units are arranged along the length direction, and the cover units include a convex portion and a concave portion, and the concave portion of one of the cover units and the convex portion of another cover unit are arranged to overlap each other and can be connected to each other.

[0011] In one embodiment, a first locking projection protruding downward is formed at one end of the convex portion, and a second locking projection protruding upward is formed at one end of the concave portion, and when the panel portion is deformed in the forward direction, the second locking projection of one of the cover units engages with the first locking projection of the other cover unit, thereby limiting the maximum bending of the panel portion.

[0012] In one embodiment, a step portion is formed on one side of the convex portion, and when the panel portion is deformed in the reverse direction, the first locking projection of the other cover unit contacts the step portion of either one to prevent the reverse deformation.

[0013] In one embodiment, the upper surface of the concave portion may be configured to slope downward toward the second locking projection.

[0014] In one embodiment, the protective cover further includes a nose unit connected to the ends of the plurality of cover units and covering the longitudinal end side of the panel portion.

[0015] In addition, the nose unit may be provided with a nose-side convex portion that overlaps with the concave portion of the cover unit at the end.

[0016] In one embodiment, an outer protective panel is provided on the other side of the panel portion, and the protective cover and the outer protective panel are combined to form a space into which the panel portion is inserted.

[0017] In one embodiment, outer protective panel coupling holes for screw-coupling the outer protective panel may be formed on both lower sides of the cover unit.

[0018] In one embodiment, an end frame portion is coupled to the longitudinal end of the panel portion, and a portion of the outer protective panel may be fixed to one surface of the end frame portion.

[0019] According to the present invention, shocks or loads directly applied to a detection panel are blocked by a protective cover including a plurality of cover units, and localized sudden deformation of the detection panel can be prevented by a connection structure of the plurality of cover units.

[0020] FIG. 1 is a perspective view of a variable radiation detector according to one embodiment of the present invention.

[0021] FIG. 2 is a bottom perspective view of a variable radiation detector according to one embodiment of the present invention.

[0022] FIG. 3 is an exploded perspective view of a variable radiation detector according to one embodiment of the present invention.

[0023] FIG. 4 is a partially exploded perspective view in the bottom direction of a variable radiation detector according to one embodiment of the present invention.

[0024] FIG. 5 is a drawing showing a variable radiation detector according to one embodiment of the present invention mounted on an object to be inspected.

[0025] FIG. 6 is an exploded perspective view of a detector body included in a variable radiation detector according to one embodiment of the present invention.

[0026] FIG. 7 is a perspective view of a cover unit constituting a protective cover in a variable radiation detector according to one embodiment of the present invention.

[0027] FIG. 8 is a bottom view of a cover unit constituting a protective cover in a variable radiation detector according to one embodiment of the present invention.

[0028] FIG. 9 is a cross-sectional view (direction CC' of FIG. 7) of a cover unit constituting a protective cover in a variable radiation detector according to one embodiment of the present invention.

[0029] FIG. 10 is a perspective view of a nose unit constituting a protective cover in a variable radiation detector according to one embodiment of the present invention.

[0030] FIG. 11 is a bottom view of a nose unit constituting a protective cover in a variable radiation detector according to one embodiment of the present invention.

[0031] FIG. 12 is a cross-sectional view (DD' direction of FIG. 10) of a nose unit constituting a protective cover in a variable radiation detector according to one embodiment of the present invention.

[0032] FIG. 13 is a cross-sectional view (in the AA' direction of FIG. 1) of a variable radiation detector according to one embodiment of the present invention.

[0033] FIG. 14 is a cross-sectional view (enlarged view of part A1 of FIG. 13) showing the connection state of a cover unit in a variable radiation detector according to one embodiment of the present invention.

[0034] FIG. 15 is a cross-sectional view (in the BB' direction of FIG. 5) of a variable radiation detector according to one embodiment of the present invention mounted on an object to be inspected.

[0035] FIG. 16 is a cross-sectional view (enlarged view of part B1 of FIG. 15) showing the connection state of a cover unit when a variable radiation detector according to one embodiment of the present invention is mounted on an object to be inspected.

[0036] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that in assigning reference numerals to the components of each drawing, the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the present invention, if it is determined that a detailed description of related known components or functions may obscure the essence of the present invention, such detailed description is omitted. Additionally, while preferred embodiments of the present invention will be described below, the technical concept of the present invention is not limited or restricted thereto and can be modified and implemented in various ways by those skilled in the art.

[0037] FIG. 1 is a perspective view of a variable radiation detector according to an embodiment of the present invention, and FIG. 2 is a bottom perspective view of a variable radiation detector according to an embodiment of the present invention. In addition, FIG. 3 is an exploded perspective view of a variable radiation detector according to an embodiment of the present invention, and FIG. 4 is a partially exploded perspective view of a variable radiation detector according to an embodiment of the present invention in the bottom direction. In addition, FIG. 5 is a drawing showing a state in which a variable radiation detector according to an embodiment of the present invention is mounted on an object for inspection.

[0038] In the following embodiments, the x-axis direction represents the first direction (length direction), the y-axis direction represents the second direction (width direction) perpendicular to the first direction, and the z-axis direction represents the vertical direction (thickness direction) as a direction perpendicular to both the first direction and the second direction. Additionally, the xy-plane formed by the x-axis and the y-axis represents a horizontal plane, and the xz-plane formed by the x-axis and the z-axis represents a vertical plane.

[0039] Referring to FIGS. 1 to 4, a variable radiation detector (1) according to one embodiment of the present invention comprises a detector body (10) including a detection panel (36 in FIG. 6), a protective cover (100) that protects the panel portion (30) of the detector body (10) from the outside, and an outer protective panel (200) coupled to the bottom side of the panel portion (30) of the detector body (10).

[0040] The detector body (10) includes a main frame portion (20) and a panel portion (30) having a detection panel (36) that detects radiation and is provided on one side of the main frame portion (20). An end frame portion (50) may be provided at the end of the panel portion (30). An inner protection panel (40) may be provided on one side of the panel portion (30). However, in the implementation of the present invention, the end frame portion (50) or the inner protection panel (40) must not necessarily be provided.

[0041] The protective cover (100) may include a plurality of interconnected cover units (110, cover unit) and a nose unit (150, nose unit) connected to the last cover unit (110). The protective cover (100) may be provided in a form that covers the panel portion (30) of the detector body (10). In one embodiment, one side of the protective cover (100) may be coupled to the main frame portion (20) of the detector body (10) by a cover connecting portion (102).

[0042] In one embodiment, the protective cover (100) may be combined with an outer protective panel (200) provided on the bottom surface of the panel portion (30). The protective cover (100) and the outer protective panel (200) are combined to form an opening on one side, through which the panel portion (30) of the detector body (10) is inserted, and one side of the protective cover (100) may be understood to be connected to the main frame portion (20) of the detector body (10) by a cover connecting portion (102).

[0043] Meanwhile, if the protective cover (100) presented in the present invention can be coupled to the detector body (10) or the panel part (30) so as to operate in conjunction with the bending of the panel part (30), it is not necessary to combine the protective cover (100) with the outer protective panel (200). In this case, an embodiment is also possible in which the cover unit (110) or nose unit (150) constituting the protective cover (100) is coupled to the side of the panel part (30) or to a structure protruding from the panel part (30) to the side (both sides in the y-axis direction).

[0044] Referring to FIG. 3, the cover connecting portion (102) may be configured in the shape of a plate provided on both sides of the main frame portion (20). At least one first through hole (104) and at least one second through hole (106) are formed in the cover connecting portion (102). The first fixing screw (105) is fixed to the main frame portion (20) through the first through hole (104), and the second fixing screw (107) is fixed to the side of the cover unit (110) of the protective cover (100) through the second through hole (106), so that the protective cover (100) can be coupled to the detector body (10).

[0045] Meanwhile, the cover connection part (102) illustrates an embodiment in which one side of the protective cover (100) is connected to the main frame part (20), and it is also possible to connect one end of the protective cover (100) to the main frame part (20) by screwing it, or to connect one end of the protective cover (100) to the main frame part (20) using an additional structure for connecting.

[0046] Referring to FIGS. 2 and 4, the protective cover (100) is coupled with the outer protective panel (200). The protective cover (100) is coupled to the detector body (10) in a manner that covers the panel portion (30) and the end frame portion (50), and the outer protective panel (200) is coupled to the open surface of the bottom surface of the protective cover (100). In one embodiment, a first panel through-hole (202) is formed in the edge of the outer protective panel (200), and the protective cover (100) and the outer protective panel (200) can be coupled by a third fixing screw (212) being coupled to the protective cover (100) through the first panel through-hole (202). In one embodiment, a second panel through hole (204) is formed in the outer protective panel (200), and a fourth fixing screw (214) is inserted through the second panel through hole (204), and the fourth fixing screw (214) is coupled to a fixing hole (56) of an end frame part (50) provided at the end of the panel part (30), so that a part of the outer protective panel (200) can be fixed to the end frame part (50) of the detector body (10). However, one end of the outer protective panel (200) does not necessarily have to be fixed to the end frame part (50).

[0047] The protective cover (100) and the outer protective panel (200) may be made of a radiation-transmitting material. For example, the outer protective panel (200) may be made of carbon fiber reinforced plastic (CFRP).

[0048] Referring to FIG. 5, a variable radiation detector (1) according to the present invention is shown mounted on an object to be inspected (P). The object to be inspected (P) may be an object having a curved surface, such as a pipe. A radiation generator (not shown) that irradiates radiation onto the object to be inspected (P) is placed in the internal space or outside of the object to be inspected (P), and the variable radiation detector (1) detects the radiation irradiated from the radiation generator.

[0049] In the present invention, when the panel portion (30) of the detector body (10) is bent along the outer surface of the inspection target (P), the protective cover (100) limits the degree of bending of the panel portion (30) and prevents localized sudden deformation of the panel portion (30). In addition, by protecting the panel portion (30) with the protective cover (100), external impacts or loads applied directly to the panel portion (30) can be blocked, and damage to the panel portion (30) can be prevented.

[0050] FIG. 6 is an exploded perspective view of a detector body included in a variable radiation detector according to one embodiment of the present invention.

[0051] The detector body (10) illustrated in FIG. 6 may be a variable detector described in published patent No. 10-2024-0153255 filed by the applicant. The contents of published patent No. 10-2024-0153255 are referenced in this specification and may be incorporated into this specification.

[0052] Referring to FIG. 6, the panel section (30) includes a detection panel (36) for detecting radiation. The detection panel (36) is flexibly configured and may be configured to include a scintillator panel, a variable TFT (Flexible Thin Film Transistor), and a gate element. The detection panel (36) may be housed inside a protective outer casing (32) made of a radiation-transmitting flexible material such as silicon. A coupling section (34) including an opening (33) is provided on one side of the protective outer casing (32), and the coupling section (34) may be coupled to the bottom surface of the main frame section (20). A terminal section (38) of the detection panel (36) may be exposed in the opening (33). An auxiliary panel (22) may be provided on the outer surface of the coupling section (34) to include the coupling section (34) and the terminal section (38).

[0053] The main frame section (20) may include a control module (not shown) inside, and the control module may include electronic components and circuits for controlling the detection panel (36) and / or processing the detection signal of the detection panel (36). The terminal section (38) of the detection panel (36) may be electrically connected to the control module or circuit of the main frame section (20).

[0054] One side of the inner protective panel (40) can be joined to the main frame part (20) and can be joined in a manner that covers one side of the protective outer casing (32). The inner protective panel (40) can be made of carbon fiber reinforced plastic (CFRP).

[0055] The end frame portion (50) includes an end frame body (52) and an end frame cover (54). The end frame body (52) is coupled to the end of the protective outer casing (32), and the end frame cover (54) can be coupled to the end of the inner protective panel (40). In one embodiment, the end frame cover (54) can be slidably coupled to the end frame body (52).

[0056] In the implementation of the present invention, the detector body (10) may be configured as shown in FIGS. 4 and FIGS. 6, but the configuration of the detector body (10) is not limited thereto, and the present invention may be applied to detector bodies of various structures including a bendable detection panel (36). For example, the protective cover (100) presented in the present invention may be utilized in bendable displays, etc.

[0057] Next, the protective cover (100) of the variable radiation detector (1) according to the present invention will be described in detail.

[0058] FIG. 7 is a perspective view of a cover unit constituting a protective cover in a variable radiation detector according to one embodiment of the present invention, FIG. 8 is a bottom view of a cover unit constituting a protective cover in a variable radiation detector according to one embodiment of the present invention, and FIG. 9 is a cross-sectional view (CC' direction of FIG. 7) of a cover unit constituting a protective cover in a variable radiation detector according to one embodiment of the present invention.

[0059] The protective cover (100) includes a plurality of cover units (110), and the plurality of cover units (110) are configured to be connected to each other.

[0060] Referring to FIG. 7, the cover unit (110) may include a horizontal section (110H) extended in the y-axis direction (width direction) and first and second vertical sections (110V1, 110V2) extended in the vertical direction on both sides of the horizontal section (110H). On the outer surfaces of the first vertical section (110V1) and the second vertical section (110V2), a coupling hole (114) may be formed into which a second fixing screw (107) is inserted through a second through hole (106) of the cover connecting section (102).

[0061] Referring to FIGS. 7 and 9, the cover unit (110) includes a convex portion (120) and a concave portion (130) from right to left when viewed in the x-axis direction (length direction). The convex portion (120) is convex in the z-axis direction, and the concave portion (130) is concave in the z-axis direction as it extends from the convex portion (120). A step portion (124) is formed at the boundary between the convex portion (120) and the concave portion (130). A first locking projection (122) protruding downward is formed on one side of the convex portion (120), and a second locking projection (132) protruding upward is formed on one side of the concave portion (130). These convex portions (120), concave portions (130), stepped portions (124), first locking projections (122), and second locking projections (132) may be formed extending from the horizontal portion (110H) of the cover unit (110) to the first vertical portion (110V1) and the second vertical portion (110V2). Additionally, the aforementioned coupling hole (114) may be formed on the outer surface of the convex portion (120) of the first and second vertical portions (110V1, 110V2).

[0062] Meanwhile, the concave portion (130) may be provided with a downward slope from the stepped portion (124) toward the second locking projection (132). This is to ensure that when the variable radiation detector (1) is bent as described later, the connecting portions of the multiple interconnected cover units (110) can be smoothly connected.

[0063] Referring to FIG. 8, an outer protective panel coupling hole (112) is formed on the bottom surface of the first vertical section (110V1) and the second vertical section (110V2) of the cover unit (110). The cover unit (110) and the outer protective panel (200) can be coupled to each other by connecting a third fixing screw (212) through the first panel penetration hole (202) of the outer protective panel (200) to the outer protective panel coupling hole (112). In one embodiment, the outer protective panel coupling hole (112) may be formed on the bottom surface of the convex section (120) of the first and second vertical sections (110V1, 110V2).

[0064] FIG. 10 is a perspective view of a nose unit constituting a protective cover in a variable radiation detector according to one embodiment of the present invention, FIG. 11 is a bottom view of a nose unit constituting a protective cover in a variable radiation detector according to one embodiment of the present invention, and FIG. 12 is a cross-sectional view (DD' direction of FIG. 10) of a nose unit constituting a protective cover in a variable radiation detector according to one embodiment of the present invention.

[0065] Referring to FIGS. 10 and 12, the nose unit (150) includes a nose cover portion (170) and a nose-side convex portion (160) formed on one side in the longitudinal direction of the nose cover portion (170). The nose-side convex portion (160) of the nose unit (150) is a part that is coupled to the concave portion (130) of the adjacent cover unit (110), and the nose-side convex portion (160) of the nose unit (150) may be configured to be identical to the convex portion (120) of the cover unit (110). A third locking projection (162) is provided at the longitudinal end of the nose-side convex portion (160), and the third locking projection (162) may be configured to be identical to the first locking projection (122) of the cover unit (110).

[0066] The nose cover portion (170) can be configured to wrap around one side of the panel portion (30) of the detector body (10) and the end frame portion (50).

[0067] Referring to FIG. 11, an outer protective panel coupling hole (152) is provided on the bottom surface of the outer edge of the nose unit (150), and a third fixing screw (212) is coupled to the outer protective panel coupling hole (152) so that the outer protective panel (200) and the nose unit (150) can be coupled.

[0068] FIG. 13 is a cross-sectional view of a variable radiation detector according to one embodiment of the present invention (direction AA' in FIG. 1), and FIG. 14 is a cross-sectional view showing the connection state of a cover unit in a variable radiation detector according to one embodiment of the present invention (enlarged view of portion A1 in FIG. 13). In addition, FIG. 15 is a cross-sectional view showing the variable radiation detector according to one embodiment of the present invention mounted on an object for inspection (direction BB' in FIG. 5), and FIG. 16 is a cross-sectional view showing the connection state of a cover unit when the variable radiation detector according to one embodiment of the present invention is mounted on an object for inspection (enlarged view of portion B1 in FIG. 15).

[0069] Referring to FIGS. 13 to 16, the method of operation of the protective cover (100) in the variable radiation detector (1) according to the present invention is explained.

[0070] Referring to FIG. 13 and FIG. 15, the variable radiation detector (1) according to the present invention can be used by mounting an outer protective panel (200) in such a way that it contacts the surface of the object to be inspected (P) and surrounds the object to be inspected (P).

[0071] The protective cover (100) includes a plurality of cover units (110) and a nose unit (150) connected to the end of the plurality of cover units (110), and in FIG. 14, the connection state of the cover units (110) is shown in enlarged form.

[0072] The sequential connection of a plurality of cover units (110) is explained using the first cover unit (110A) and the second cover unit (110B) in FIG. 14 as examples.

[0073] The first cover unit (110A) includes, from right to left in FIG. 14, a first locking projection (122A), a convex portion (120A), a stepped portion (124A), a concave portion (130A), and a second locking projection (132A). The second cover unit (110B) includes, from right to left in FIG. 14, a first locking projection (122B), a convex portion (120B), a stepped portion (124B), a concave portion (130B), and a second locking projection (132B).

[0074] The concave portion (130A) of the first cover unit (110A) overlaps with the convex portion (120B) of the second cover unit (110B). In other words, the first locking projection (122B) of the second cover unit (110B) is located on the upper side of the concave portion (130A) of the first cover unit (110A), and the second locking projection (132A) of the first cover unit (110A) is located on the lower side of the convex portion (120B) of the second cover unit (110B).

[0075] If the variable radiation detector (1) illustrated in FIG. 13 is deformed so that it becomes convex downward (referred to as 'reverse deformation'), the first locking projection (122B) of the second cover unit (110B) strikes the stepped portion (124A) of the first cover unit (110A). Accordingly, the reverse deformation of the variable radiation detector (1) can be suppressed.

[0076] The variable radiation detector (1) shown in FIG. 13 is deformed so that it becomes convex upward (referred to as 'forward deformation'), and the variable radiation detector (1) comes into contact with the outer surface of the object to be inspected (P) as shown in FIG. 15.

[0077] Referring to FIG. 16, as the variable radiation detector (1) is deformed in the forward direction, the first cover unit (110A) and the second cover unit (110B) move away from each other. At this time, the second locking projection (132A) of the first cover unit (110A) and the first locking projection (122B) of the second cover unit (110B) move closer to each other. If the variable radiation detector (1) is deformed in the forward direction to the maximum extent, the second locking projection (132A) of the first cover unit (110A) and the first locking projection (122B) of the second cover unit (110B) interlock with each other, and accordingly, further forward deformation of the variable radiation detector (1) is suppressed. Thus, it is possible to prevent the variable radiation detector (1) from deforming beyond an allowable range.

[0078] In addition, since multiple cover units (110) are connected to each other, local abrupt deformation in the variable radiation detector (1) is prevented, and damage to the detection panel (36), etc., can be prevented.

[0079] Meanwhile, in the preceding description, the protective cover (100) is connected to the main frame part (20) using the cover connecting part (102). However, it is also possible to provide a structure identical to the concave part (130) of the cover unit (110) and the second locking projection (132) at one end of the main frame part (20) that the protective cover (100) contacts, so that the cover unit (110) at the starting position of the protective cover (100) is connected to the corresponding structure of the main frame part (20).

[0080] The foregoing description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications, changes, and substitutions within the scope of the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are intended to explain, not limit, the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by such embodiments and accompanying drawings. The scope of protection of the present invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention.

[0081] <Explanation of Symbols>

[0082] 1: Variable radiation detector 10: Detector body

[0083] 20: Main frame section 30: Panel section

[0084] 32: Protective outer shell 34: Joint

[0085] 36: Detection panel 40: Inner protection panel

[0086] 50: End frame section 100: Protective cover

[0087] 110: Cover unit 120: Convex part

[0088] 122: First stopper 130: Concave portion

[0089] 132: Second stopper 150: Nose unit

[0090] 160: Nose-side convex portion 170: Nose cover portion

[0091] 200: Outer protection panel

Claims

1. A bendable panel part having a detection panel for radiation detection; and A bendable protective cover provided on one side of the panel portion along the longitudinal direction of the panel portion to protect the panel portion; Includes, A variable radiation detector characterized in that the protective cover comprises a plurality of interconnected cover units, and the maximum bending of the panel portion is limited by the plurality of cover units.

2. In Paragraph 1, A variable radiation detector characterized by including a detector body comprising the above-mentioned panel portion and further comprising a main frame portion coupled to one side of the panel portion.

3. In Paragraph 2, A variable radiation detector characterized by further including a cover connection portion connecting at least one cover unit and the main frame portion.

4. In Paragraph 1, A variable radiation detector characterized in that the cover unit comprises a horizontal portion formed along the width direction of the panel portion and first and second vertical portions formed along the thickness direction of the panel portion on both sides of the horizontal portion.

5. In Paragraph 1, The above plurality of cover units are arranged along the length direction, and A variable radiation detector characterized in that the above-described cover unit includes a convex portion and a concave portion, and the concave portion of one of the cover units and the convex portion of another cover unit are arranged to overlap each other and are connected to each other.

6. In Paragraph 5, A first locking projection protruding downward is formed at one end of the convex portion, and a second locking projection protruding upward is formed at one end of the concave portion. A variable radiation detector characterized in that when the panel portion is deformed in the forward direction, the second locking projection of one of the cover units engages with the first locking projection of another cover unit, thereby limiting the maximum bending of the panel portion.

7. In Paragraph 6, A stepped portion is formed on one side of the above convex portion, and A variable radiation detector characterized in that when the panel portion is deformed in the reverse direction, the first locking projection of the other cover unit contacts the stepped portion of any one of the panel portions to prevent the reverse deformation.

8. In Paragraph 6, A variable radiation detector characterized in that the upper surface of the above-mentioned concave portion is inclined downward toward the second locking projection.

9. In Paragraph 5, A variable radiation detector characterized in that the above protective cover further includes a nose unit connected to the end of the plurality of cover units and covering the longitudinal end side of the panel portion.

10. In Paragraph 9, A variable radiation detector characterized in that the nose unit is provided with a nose-side convex portion that overlaps with the concave portion of the cover unit at the end.

11. In Paragraph 5, Further comprising a main frame portion coupled to one side of the above panel portion, and A variable radiation detector characterized in that the main frame portion is provided with a concave portion that is coupled to the convex portion of the cover unit, and the main frame portion and the protective cover are connected.

12. In any one of paragraphs 1 to 11, A variable radiation detector characterized by having an outer protective panel on the other side of the panel portion, and the protective cover and the outer protective panel being combined to form a space into which the panel portion is inserted.

13. In Paragraph 12, A variable radiation detector characterized by having outer protective panel coupling holes formed on both lower sides of the cover unit for screw coupling the outer protective panel.

14. In Paragraph 12, A variable radiation detector characterized in that an end frame portion is coupled to the longitudinal end of the panel portion, and a portion of the outer protective panel is fixed to one surface of the end frame portion.

Images