camera

Abstract

The application discloses a camera. The camera comprises a shielding shell, a first shielding assembly, a second shielding member and a core. The shielding shell comprises a shell cavity, the shell cavity comprises an opening and a wire hole, and the opening and the wire hole are communicated with the inside of the shell cavity and the outside of the camera. The first shielding assembly comprises a shielding plate and a lens shielding window. The shielding plate comprises a through hole, the lens shielding window shields the through hole and shields the opening together with the shielding plate, and the second shielding member shields the wire hole, so that the first shielding assembly, the second shielding member and the shielding shell form a shielding cavity. The core is located in the shielding cavity and comprises a lens. The lens is opposite to the lens shielding window, and a cable of the core extends out of the wire hole. Thus, the circumferential rays of the camera can be shielded by the circumferential side wall of the shielding shell, the front rays can be shielded by the first shielding assembly, and the rear rays can be shielded by the rear side wall of the shielding shell and the second shielding member. The rays in all directions are shielded, and the shielding performance is good.

Description

TECHNICAL FIELD

[0001] The present application relates to a monitoring device, in particular to a camera. BACKGROUND

[0002] The camera works in a low-dose nuclear power plant. The radiation of these places is mainly γ-ray, which has an impact on silicon semiconductor, causing electronic devices such as single-chip microcomputer, CMOS, Flash, EMMC, etc. to be damaged or fail.

[0003] Therefore, the camera working in such a place needs to have good shielding performance. SUMMARY

[0004] The present application aims to disclose a camera. The camera has good shielding performance.

[0005] The present application discloses a camera. The camera comprises a shielding shell, a first shielding assembly, a second shielding member and a core. The shielding shell comprises a shell cavity, the shell cavity comprises an opening and a wire hole, the opening and the wire hole communicate the inside of the shell cavity and the outside of the camera. The first shielding assembly comprises a shielding plate and a lens shielding window; the shielding plate comprises a through hole, the lens shielding window shields the through hole and shields the opening together with the shielding plate, and the second shielding member shields the wire hole, so that the first shielding assembly, the second shielding member and the shielding shell form a shielding cavity. The core is located in the shielding cavity and comprises a lens, the lens faces the lens shielding window; the cable of the core extends from the wire hole.

[0006] In some embodiments, the first shielding assembly comprises a support, the lens shielding window is assembled on the support; the shielding plate is assembled on the support; the support abuts against the inner wall of the shell cavity, so that the shielding plate and the lens shielding window shield the core in front of the core.

[0007] In some embodiments, the camera comprises a front cover, when the front cover is assembled with the shielding shell, the support abuts against the inner wall of the shell cavity.

[0008] In some embodiments, the core comprises a core shell, a power supply assembly and a PCB board, the lens, the power supply assembly and the PCB board are located in the core shell, the core shell comprises a core shell hole communicating the inside of the core shell. The first shielding assembly comprises a screw and a shielding plug; the support comprises a support screw hole; the screw passes through the support screw hole and connects the shielding plate and the core shell hole; the shielding plug plugs the support screw hole.

[0009] In some embodiments, the camera comprises a front cover seal, the front cover is assembled with the shield shell, clamping the front cover seal. The front cover seal comprises an abutment portion; the abutment portion is in abutment with the shield plug.

[0010] In some embodiments, the second shield is fixed to the inner wall of the shell cavity, and forms a disconnected ring with the inner wall of the shell cavity.

[0011] In some embodiments, the shield plate is a tungsten plate, and the shield shell comprises a shield layer containing lead.

[0012] In some embodiments, the shield plate comprises a first shield portion and a second shield portion, the first shield portion is directly opposite the lens shield window; the second shield portion is bent towards the core relative to the first shield portion. The camera comprises a front cover and a light supplement assembly. The front cover is assembled with the shield shell, and the light supplement assembly is located between the front cover and the second shield portion.

[0013] In some embodiments, the light supplement assembly is assembled with the second shield portion.

[0014] In some embodiments, the front and back surfaces of the front cover are flat surfaces.

[0015] In some embodiments, the camera comprises a front cover; the shield shell comprises an inner container, a shield layer and an outer sleeve; the inner container comprises an inner container body, a flange portion and a wiring column. The flange portion protrudes from the inner container body and is used to assemble with the front cover. The wiring column has the wiring hole and protrudes relative to the inner container body; the shield layer covers the inner container body and the wiring column; the outer sleeve covers the shield layer and is welded with the flange portion and the wiring column.

[0016] In some embodiments, at least one of the shield layer and the inner container, and the shield layer and the outer sleeve is filled.

[0017] For the aforementioned camera, the camera module is located within the shielded cavity. Since rays propagate in a straight line, rays circumferential to the camera can be shielded by the circumferential sidewalls of the shielding housing (blocked, completely absorbed, or significantly weakened). Rays in front of the camera can be shielded by the first shielding component, and rays behind the camera can be shielded by the rear sidewall of the shielding housing and the second shielding component. Therefore, rays from all directions are shielded, resulting in good shielding performance for the camera (e.g., capable of withstanding nuclear radiation doses not exceeding 1000 Gy), ensuring that the camera module within the shielded cavity is unaffected by rays and that the camera functions normally. Furthermore, based on the above configuration, the camera module is placed within the shielding housing; subsequently, the second shielding component shields the wiring holes; and then, the first shielding component shields the openings. Therefore, the camera offers convenient manufacturability. Attached Figure Description

[0018] Figure 1 This is a stereoscopic view of the camera used in this application;

[0019] Figure 2 This is an exploded view of the camera in this application;

[0020] Figure 3 This is a perspective view of the shielding housing of the camera in this application;

[0021] Figure 4 yes Figure 3 An exploded view of the shielding enclosure shown;

[0022] Figure 5 yes Figure 3 A schematic diagram of the inner liner of the shielding shell shown;

[0023] Figure 6 This is a schematic diagram of the support member of the front shielding assembly of this application;

[0024] Figure 7 This is a cross-sectional view of the camera in this application from one angle;

[0025] Figure 8 yes Figure 7 Enlarged view of section A;

[0026] Figure 9 This is a schematic diagram showing the assembly relationship between the first shielding component, the front cover, the front cover seal, and the movement.

[0027] Figure 10 This is a cross-sectional view of the camera in this application from another angle;

[0028] Figure 11 yes Figure 10 Enlarged view of section B. Detailed Implementation

[0029] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0030] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0031] See Figure 1 , Figure 2 , Figure 7 and Figure 10 The camera includes a shielding housing 1, a first shielding component 2, a second shielding element 3, and a camera module 4. Combined with... Figures 2 to 4 The shielding housing 1 includes a housing cavity 11, which includes an opening 111 and a wiring hole 112. The opening 111 and the wiring hole 112 communicate between the interior of the housing cavity 11 and the exterior of the camera. See also... Figure 2 , Figure 7 , Figure 8 and Figure 10 The first shielding component 2 includes a shielding plate 21 and a lens shielding window 22. The shielding plate 21 includes a through hole 210. The through hole 210 allows light from outside the camera to pass through the lens shielding window 22 and then through the through hole 210 to the lens 41 of the camera module 4. The lens shielding window 22 is a window capable of shielding rays (such as gamma rays), for example, leaded glass. The lens shielding window 22 shields the through hole 210 and, together with the shielding plate 21, shields the opening 111 (for example, the area of ​​the through hole 210 is smaller than the area of ​​the lens shielding window 22, so that the lens shielding window 22 shields the through hole 210). Combined with the second shielding component 3 shielding the wiring hole 112, the first shielding component 2, the second shielding component 3, and the shielding housing 1 constitute a shielding cavity 110. The camera module 4 is located within the shielding cavity 110, and the camera module 4 can be as follows: Figure 2 The overall structure shown can also be composed of discrete components, as long as they can achieve the desired function. The mechanism 4 includes a lens 41, which faces the lens shielding window 22, and the cable of the mechanism 4 extends from the wiring hole 112.

[0032] As set above, see Figure 7 and Figure 10 The camera module 4 is located within the shielding cavity 110. Since the radiation travels in a straight line, the radiation circumferential to the camera can be shielded by the circumferential sidewalls of the shielding housing 1 (blocked, completely absorbed, or significantly weakened). Radiation in front of the camera can be shielded by the first shielding component 2, and radiation behind the camera can be shielded by the rear sidewall of the shielding housing 1 and the second shielding component 3. Therefore, radiation from all directions is shielded, resulting in good shielding performance for the camera (e.g., able to withstand nuclear radiation doses not exceeding 1000 Gy), ensuring that the camera module 4 within the shielding cavity 110 is unaffected by radiation, and that the camera (especially the camera module 4 and other electronic components) can function normally. Furthermore, based on the above configuration, the camera module 4 is placed within the shielding housing 1. Subsequently, the second shielding component 3 shields the wiring hole 112, and then the first shielding component 2 shields the opening 111. Therefore, the camera has convenient manufacturability.

[0033] See Figure 2 , Figures 7 to 11 The first shielding component 2 includes a support member 23. The lens shielding window 22 is assembled to the support member 23. See also Figure 6 The support member 23 includes a mounting cavity 232. (See also...) Figure 7 , Figure 8 and Figure 10 The lens shielding window 22 is surrounded by a window elastic element 230 (e.g., a sealing ring). The periphery of the window elastic element 230 abuts against the side wall of the mounting cavity 232 and the front cover 5. By providing the window elastic element 230, the window elastic element 230 is elastic, preventing the lens shielding window 22 from being crushed during assembly. The shielding plate 21 is assembled to the support member 23; the assembly method is not limited, as long as the shielding plate 21, the lens shielding window 22, and the support member 23 form a whole. The support member 23 abuts against the inner wall of the housing cavity 11. After abutting, the shielding plate 21 and the lens shielding window 22 shield the mechanism 4 in front of it, thus preventing radiation from affecting the electronic components inside the mechanism 4. Because radiation travels in a straight line, the area (i.e., the blocking area) of the shielding plate 21 and the lens shielding window 22 is larger than the cross-sectional area of ​​the front of the mechanism 4 to achieve the shielding. See also Figure 6 and Figure 5 The support member 23 has a circumferentially protruding support arm 233. These two support arms 233 are symmetrical. The inner wall of the housing cavity 11 is provided with a circumferentially positioned part 113. These two positioned parts 113 are symmetrical. The number of positioned parts 113 and the number of support arms 233 are not limited. When the shielding plate 21, the lens shielding window 22, and the support member 23 are installed as a whole, the support arms 233 abut against the positioned parts 113.

[0034] As described above, the lens shielding window 22 is mounted on the support member 23, and the support member 23 connects the shielding plate 21 to form an assembly. This allows the shielding plate 21 and the lens shielding window 22 to shield the camera mechanism 4 from the front. Thus, the front cover 5 does not need a structure for fixing the first shielding assembly 2, resulting in a simpler structure for the front cover 5 and easier assembly of the camera, offering convenient manufacturability. For example, Figure 1 , Figure 2 , Figure 7 and Figure 10 In this design, the front cover 5 is plate-shaped and has a simple structure. For example, the front cover 5 does not require screw holes for mounting the first shielding component 2, further simplifying its structure. Furthermore, the shielding plate 21 and the lens shielding window 22 shield the camera mechanism 4 from the front, further enhancing the camera's shielding performance.

[0035] In some embodiments, the camera includes a front cover 5. When the front cover 5 is assembled with the shielding housing 1, the support member 23 abuts against the inner wall of the housing cavity 11. As mentioned above, the support arm 233 abuts against the positioning part 113.

[0036] As described above, when the front cover 5 and the shielding housing 1 are assembled in place, the support 23 is exactly in contact with the inner wall of the housing cavity 11. It can also be understood that the support 23 has a positioning function. In this way, the assembly between the first shielding component 2, the front cover 5 and the shielding housing 1 of the camera is simple, and the camera has convenient manufacturability.

[0037] See Figure 2 , Figure 7 , Figure 9 and Figure 10 The mechanism 4 includes a mechanism housing 42, a power supply assembly 43, and a PCB board. The lens 41, the power supply assembly 43, and the PCB board are located within the mechanism housing 42. The mechanism housing 42 includes mechanism housing holes 421 communicating with the interior of the mechanism housing 42. Alternatively, all mechanism housing holes 421 may communicate with the interior of the mechanism housing 42, or only a portion of the mechanism housing holes 421 may communicate with the interior of the mechanism housing 42, while the remaining portion may not communicate with the interior of the mechanism housing 42. See also... Figure 2 and Figure 9 The first shielding component 2 includes a screw 24 and a shielding plug 25. The support member 23 includes a support member screw hole 231. The screw 24 passes through the support member screw hole 231 and the shielding plate 21 and connects to the mechanism housing hole 421; the shielding plug 25 seals the support member screw hole 231. The material of the shielding plug 25 is not limited, as long as it can perform the shielding function; for example, the material of the shielding plug 25 is tungsten.

[0038] As described above, the screw hole 231 of the support member is sealed by the shielding plug 25. The support member 23 serves to fix the shielding plug 25, preventing rays from passing through the screw hole 231 of the support member, the shielding plate 21, and the housing hole 421 of the camera mechanism 4 and entering the interior of the camera mechanism 4. In addition, this assembly method allows the shielding plate 21 to cover the front opening of the camera mechanism housing 42, further preventing rays from entering the interior of the camera mechanism 4 from the front of the camera. Therefore, the above two aspects further improve the shielding performance of the camera. Furthermore, the above configuration makes the camera mechanism 4 and the first shielding component 2 a single unit. This unit is placed in the housing cavity 11 so that the support member 23 abuts against the inner wall of the housing cavity 11. Then, the front cover seal 6 and the front cover 5 are assembled, making the camera easy to manufacture.

[0039] See Figure 9 , Figure 2 , Figure 7 and Figure 10 The camera includes a front cover 5 and a front cover seal 6. The front cover 5 is assembled with the shielding housing 1, clamping the front cover seal 6. The front cover seal 6 is not limited to a sealing ring; it only needs to provide a sealing function. See also Figures 2 to 5 The shielding housing 1 is provided with a flange portion 121. The flange portion 121 has a flange mounting hole, and the front cover 5 has a front cover mounting hole. A front cover mounting member 51 (e.g., a screw) passes through the front cover mounting hole and locks into the flange mounting hole 1211 to connect the front cover 5 and the shielding housing 1, thereby clamping the front cover seal 6. In this embodiment, clamping the front cover seal 6 also includes the front cover mounting member 51 passing through the front cover seal 6, but the front cover mounting member 51 may not pass through the front cover seal 6. The assembly between the front cover 5 and the shielding housing 1 is not limited to this. See also... Figure 2 and Figure 9 The front cover seal 6 includes an abutment portion 61. The abutment portion 61 abuts against the shielding plug 25.

[0040] As described above, since the front cover seal 6 is clamped by the front cover 5 and the shielding shell 1, the shielding plug 25 will not fall off because the abutting part 61 of the front cover seal 6 abuts against the shielding plug 25. In addition, the front cover seal 6 is an essential component of the camera. Expanding the function of the front cover seal 6 can prevent the shielding plug 25 from falling off without increasing the structural complexity of the camera.

[0041] In the embodiments of this application, the cross-section of the shielding housing 1 and the cross-section of the support member 23 are both square, and the front cover 5 is also square. This facilitates the assembly of the shielding housing 1, the support member 23 and the front cover 5, for example, by mounting them through the front cover mounting member 51. The camera has convenient manufacturability.

[0042] See Figure 10 The second shielding member 3 is fixed to the inner wall of the housing cavity 11, forming a discontinuous annular shape with the inner wall of the housing cavity 11. Figure 10 In the middle, the second shielding element 3 is L-shaped. The annulus is a broken rectangular ring. For example... Figure 10 As shown, the second shielding component 3 can be fixed by screws engaging with studs on the inner wall of the housing cavity 11.

[0043] As described above, the second shielding member 3 forms a discontinuous annular shape with the inner wall of the housing cavity 11 to shield the wiring hole 112. This design not only simplifies the structure of the second shielding member 3, achieving cable shielding with a simple structure, but also allows the cable to enter the wiring hole at the discontinuity, facilitating cable routing while ensuring good shielding against radiation.

[0044] The second shielding element 3 only needs to serve a shielding function. In this application, the second shielding element 3 is made of tungsten plate. Although tungsten has a good shielding effect, it is not easy to process and shape. However, the structure of the aforementioned second shielding element 3 is simple, which allows the second shielding element 3 to be made of tungsten, thereby ensuring the good shielding performance of the camera.

[0045] In this application, the shielding plate 21 is a tungsten plate, and the shielding housing 1 includes a lead-containing shielding layer.

[0046] As described above, tungsten is more expensive and harder to process than lead, but its shielding performance is superior. The plate-like shape of the tungsten plate makes processing relatively easier. Therefore, combining the tungsten plate with the lead-containing shielding housing 1 results in a lower cost for the camera and better radiation shielding performance. Using a combination of a tungsten plate and a lead-containing shielding layer allows the tungsten to be exposed, making the camera lighter and smaller, and also making it easier to construct the shielding cavity 110. If the shielding plate 21 were made of lead, the lead plate could not be exposed and would need to be encased in a casing, inevitably increasing the weight and size of the camera, and making it difficult to construct the shielding cavity 110.

[0047] See Figure 10 , Figure 11 and Figure 2 The shielding plate 21 includes a first shielding part 211 and a second shielding part 212. The first shielding part 211 faces the lens shielding window 22. The second shielding part 212 is bent relative to the first shielding part 211 toward the camera body 4, that is, bent toward the rear end of the shielding housing 1. The camera includes a front cover 5 and a supplementary lighting assembly 7, which is located between the front cover 5 and the second shielding part 212. Of course, the first shielding part 211 and the second shielding part 212 can be spliced ​​together to form the shielding plate 21, or they can be integrated as shown in the figure, provided that the shielding performance is met.

[0048] As described above, since the second shielding part 212 bends towards the core 4 relative to the first shielding part 211, a space for accommodating the supplementary lighting assembly 7 is formed between the front cover 5 and the second shielding part 212. This allows for a compact camera structure, a small overall size, and a simple structure for the front cover 5. Figure 2 As shown, both the front and back of the front cover 5 have flat surfaces. Furthermore, the supplementary lighting component 7 can resist low-dose radiation. By placing it between the second shielding part 212 and the front cover 5, it does not occupy the shielding cavity 110, which also makes the camera structure compact.

[0049] See Figure 2 , Figure 10 and Figure 11 The supplementary lighting component 7 is assembled on the second shielding part 212.

[0050] As described above, the supplementary lighting component 7 is assembled on the second shielding part 212, and the front cover 5 does not need to have a structure for installing the supplementary lighting component 7, so the structure of the front cover 5 is simple.

[0051] See Figures 1 to 5 as well as Figure 7 and Figure 10 The camera includes a front cover 5. The shielding housing 1 includes an inner liner 12, a shielding layer 13, and an outer cover 14. The inner liner 12 includes an inner liner body 122, a flange portion 121, and cable routing posts 123. The flange portion 121 protrudes from the inner liner body 122 and is used for assembly with the front cover 5, not limited to assembly via a front cover mounting member 51 passing through a front cover mounting hole and locking with a flange mounting hole 1211 as described above. The cable routing posts 123 have cable routing holes 112 and protrude relative to the inner liner body 122. The shielding layer 13 covers the inner liner body 122 and the cable routing posts 123. The outer cover 14 covers the shielding layer 13 and is welded to the flange portion 121 and the cable routing posts 123. The cable routing posts 123 pass through the shielding layer hole 131 of the shielding layer 13 and then into the outer cover hole 141 of the outer cover 14. Figure 3 As shown, after welding, a front weld 1212 and a tail weld 1231 are formed.

[0052] As described above, the shielding housing 1 includes an inner liner 12, a shielding layer 13, and an outer jacket 14, which are welded together. The shielding housing 1 is simple to manufacture, which makes the camera easy to manufacture. Furthermore, the camera is made easy to manufacture by combining the flange 121 with the front cover 5.

[0053] In some embodiments, at least one of the spaces between the shielding layer 13 and the inner liner 12, and between the shielding layer 13 and the outer liner 14, is filled. The filling material may be adhesive.

[0054] As described above, at least one of the spaces between the shielding layer 13 and the inner liner 12, and between the shielding layer 13 and the outer liner 14, is filled, so that there are no hollow spaces between the shielding layer 13 and the inner liner 12, and / or between the shielding layer 13 and the outer liner 14, thereby improving the rigidity between the layers.

[0055] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A camera, characterized in that, The camera includes a shielding housing, a first shielding component, a second shielding element, and a camera module, wherein: The shielding housing includes a housing cavity, the housing cavity including an opening and a wiring hole, the opening and the wiring hole communicating between the interior of the housing cavity and the exterior of the camera; The first shielding component includes a shielding plate and a lens shielding window; the shielding plate includes a through hole, the lens shielding window shields the through hole and together with the shielding plate shields the opening, and the second shielding member shields the wiring hole, so that the first shielding component, the second shielding member and the shielding shell constitute a shielding cavity; The movement mechanism is located within the shielded cavity and includes a lens, which faces the lens shielding window; the movement mechanism's cables extend from the wiring holes. The first shielding assembly includes a support member, and the lens shielding window is assembled to the support member; the support member includes a mounting cavity, and the camera includes a window elastic member and a front cover assembled with the shielding housing; the window elastic member is disposed around the periphery of the lens shielding window, and the window elastic member abuts against the side wall of the mounting cavity and the front cover; the shielding plate is assembled to the support member; the support member abuts against the inner wall of the housing cavity, so that the shielding plate and the lens shielding window shield the camera mechanism from the front of the camera mechanism; When the front cover and the shielding shell are assembled in place, the support member abuts against the inner wall of the shell cavity; The mechanism includes a mechanism housing, a power supply assembly, and a PCB board. The lens, the power supply assembly, and the PCB board are located inside the mechanism housing. The mechanism housing includes a mechanism housing hole that communicates with the interior of the mechanism housing. The first shielding assembly includes a screw and a shielding plug; the support includes a support screw hole; the screw passes through the support screw hole and the shielding plate and connects to the hole in the movement housing; the shielding plug seals the support screw hole; The camera includes a front cover seal, which is assembled with the shielding housing and clamps the front cover seal. The front cover seal includes an abutting portion; the abutting portion abuts against the shielding plug; The shielding shell includes an inner liner, a shielding layer, and an outer liner, which are welded together. At least one of the spaces between the shielding layer and the inner liner, and between the shielding layer and the outer liner, is filled. The second shielding member is fixed to the inner wall of the housing cavity, forming a discontinuous annular shape with the inner wall of the housing cavity; The shielding plate is a tungsten plate, and the shielding housing includes a lead-containing shielding layer.

2. The camera according to claim 1, characterized in that, The shielding plate includes a first shielding part and a second shielding part, the first shielding part facing the lens shielding window; the second shielding part is bent toward the movement relative to the first shielding part. The camera includes a front cover and a fill light assembly. The front cover is assembled with the shielding housing, and the fill light assembly is located between the front cover and the second shielding part.

3. The camera according to claim 2, characterized in that, The supplementary lighting component is assembled on the second shielding part, and / or the front and rear sides of the front cover are flat surfaces.

4. The camera according to claim 1, characterized in that, The camera includes a front cover; the shielding housing includes an inner liner, a shielding layer, and an outer liner; the inner liner includes an inner liner body, a flange, and cable routing posts; The flange protrudes from the inner liner body and is used for assembly with the front cover; the wiring post has the wiring hole and protrudes relative to the inner liner body; the shielding layer covers the inner liner body and the wiring post; the outer jacket covers the shielding layer and is welded to the flange and the wiring post.

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