Camera assembly and monitoring device with same

Abstract

The utility model provides a camera shooting assembly and a monitoring device with the camera shooting assembly, and the camera shooting assembly comprises a body which is provided with a window; the cleaning part is arranged on the body and comprises a rotating shaft and a fixing frame, a cleaning brush is arranged on the fixing frame and faces the window, one end of the fixing frame is fixedly connected with the rotating shaft so as to drive the cleaning brush to rotate along the surface of the window, an elastic piece is further arranged on the fixing frame, and the elastic piece is used for providing elastic force facing the window for the cleaning brush; the elastic force provided by the elastic piece to the end, close to the rotating shaft, of the cleaning brush is smaller than that provided by the elastic piece to the end, away from the rotating shaft, of the cleaning brush. According to the technical scheme, the problem that the dust removal effect is affected due to the fact that the tail end of a brush of a monitoring device in the prior art is prone to upwarp can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring devices, in particular to a camera assembly and a monitoring device having the same. Background Art

[0002] In some application environments with severe dust, such as coal mines or granaries, the monitoring device needs to have a dust removal function to ensure clear monitoring.

[0003] In the prior art, a cleaning device is usually provided on the window surface of the monitoring device. The cleaning device is generally a cleaning brush, which is provided on a rotating shaft and driven by the rotating shaft to move on the surface of the window to scrape off the dust on the window surface. However, a cantilever structure is formed between the cleaning brush and the rotating shaft. As the cleaning brush moves, the cantilever structure after the cleaning brush is fixed will bend away from the window at one end away from the rotating shaft when it is used, causing the cleaning brush to be unable to effectively fit the surface of the window, thereby affecting the cleaning effect of the cleaning brush on the window. Utility Model Content

[0004] The utility model provides a camera assembly and a monitoring device having the same, so as to solve the problem that the brush end of the monitoring device in the prior art is easy to be lifted up and affects the dust removal effect.

[0005] According to one aspect of the utility model, a camera assembly is provided, which includes: a main body, the main body having a window; a cleaning part, arranged on the main body, the cleaning part including a rotating shaft and a fixed frame, a cleaning brush is arranged on the fixed frame, the cleaning brush is arranged toward the window, one end of the fixed frame is fixedly connected to the rotating shaft to drive the cleaning brush to rotate along the surface of the window, and an elastic member is also arranged on the fixed frame, the elastic member is used to provide an elastic force to the cleaning brush toward the window, and the elastic force provided by the elastic member to the end of the cleaning brush close to the rotating shaft is less than the elastic force provided by the elastic member to the end of the cleaning brush away from the rotating shaft.

[0006] Furthermore, the fixed frame includes a first support plate and a second support plate, both of which are fixedly connected to the rotating shaft, the cleaning brush is arranged on the second support plate, the first support plate is located on the side of the second support plate away from the window, and the elastic member is arranged between the first support plate and the second support plate to drive the second support plate close to the window.

[0007] Furthermore, the elastic member is a spring sheet, which has a first bending portion, a connecting portion and a second bending portion. The first bending portion and the second bending portion are respectively arranged at two ends of the connecting portion, and both are bent in a direction away from the first support plate. The first bending portion is arranged at an end of the connecting portion close to the rotating shaft, and the connecting portion is fixedly connected to the first support plate. The elastic force provided by the first bending portion to the second support plate is smaller than the elastic force of the second bending portion on the first support plate.

[0008] Further, the included angle between the first bent portion and the first support plate is equal to the included angle between the second bent portion and the first support plate, and the length of the first bent portion is greater than the length of the second bent portion; or the included angle between the first bent portion and the first support plate is greater than the included angle between the second bent portion and the first support plate, and the length of the first bent portion is equal to the length of the second bent portion.

[0009] Further, the fixing frame further includes a dust shield disposed between the first support plate and the second support plate. The dust shield, the first support plate and the second support plate cooperate to enclose a receiving cavity, and the elastic member is located in the receiving cavity.

[0010] Further, along the extending direction of the second support plate, the distance from the cleaning brush to the second support plate gradually increases from the end away from the rotating shaft.

[0011] Further, limiting holes are provided on both the first support plate and the second support plate, and the rotating shaft is inserted into the limiting holes of the first support plate and the second support plate to limit the rotation of the first support plate and the second support plate relative to the rotating shaft.

[0012] Further, a clamping groove is provided on the second support plate, and the cleaning brush is clamped and matched with the clamping groove.

[0013] According to another aspect of the present invention, a monitoring device is provided. The monitoring device includes: a base; a camera assembly which is the above-mentioned camera assembly and is rotatably disposed on the base around the vertical direction; a dust shield disposed between the base and the camera assembly and covering the upper part of the camera assembly, and the outer diameter of the dust shield gradually decreases along the direction away from the camera assembly.

[0014] Further, the camera assembly further includes a housing, and the dust shield covers the upper part of the housing. When the outer peripheral edge of the dust shield does not protrude from the outer peripheral edge of the housing, a chamfer structure is provided on the outer peripheral edge of the housing, and the outer diameter of the chamfer structure gradually increases along the direction away from the dust shield.

[0015] Applying the technical solution of the present utility model, the driving motor can drive the fixing bracket to rotate through the rotating shaft, and then drive the cleaning brush to rotate on the surface of the window, so as to sweep away the dust on the surface of the window and ensure the monitoring effect of the camera assembly. Moreover, the cleaning brush can approach the window under the elastic action of the elastic member, so that the cleaning brush can closely adhere to the surface of the window, preventing a gap from appearing between the cleaning brush and the window, and further ensuring the cleaning effect of the cleaning brush on the window. In the traditional technical solution, since a cantilever structure is formed between the fixing bracket and the rotating shaft, in this application, by setting that the elastic force provided by the elastic member to the end of the cleaning brush close to the rotating shaft is less than the elastic force provided by the elastic member to the end of the cleaning brush far from the rotating shaft, the warping of the end caused by the cantilever structure after the fixing bracket is fixed on one side can be reduced. Through the pressure difference of the elastic member, the cleaning brush can effectively linearly fit the window, making the force of the cleaning brush on the window more uniform, ensuring the consistency of the dust removal effect, and further improving the use effect of the cleaning brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The schematic diagrams in the specification forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0017] Figure 1 The structural schematic diagram of the camera assembly provided by the present utility model is shown;

[0018] Figure 2 The structural schematic diagram of the cleaning part provided by the present utility model is shown;

[0019] Figure 3 The exploded view of the structure of the cleaning part provided by the present utility model is shown;

[0020] Figure 4 The lateral cross-sectional view of the monitoring device provided by the present utility model is shown;

[0021] Figure 5 Shows Figure 4 The partial enlarged view at A in

[0022] Among them, the above-mentioned drawings include the following reference numerals:

[0023] 10, body;

[0024] 11, window;

[0025] 20, cleaning part;

[0026] 201, accommodation cavity; 202, limiting hole;

[0027] 21, rotating shaft; 22, first support plate; 23, second support plate; 231, clamping groove; 24, cleaning brush;

[0028] 25. Elastic member; 251. First bending portion; 252. Connecting portion; 253. Second bending portion;

[0029] 26. Dust shield;

[0030] 30. Housing;

[0031] 31. Chamfer structure;

[0032] 01. Base; 02. Dust-proof ring. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restrictive of the present invention and its application or use. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] As Figures 1 to 3 shown, an embodiment of the present invention provides an imaging assembly, and the imaging assembly includes a main body 10 and a cleaning portion 20. Among them, the main body 10 has a viewing window 11, the cleaning portion 20 is disposed on the main body 10, the cleaning portion 20 includes a rotating shaft 21 and a fixing frame, a cleaning brush 24 is disposed on the fixing frame, the cleaning brush 24 faces the viewing window 11, one end of the fixing frame is fixedly connected to the rotating shaft 21 to drive the cleaning brush 24 to rotate along the surface of the viewing window 11, and an elastic member 25 is further disposed on the fixing frame, the elastic member 25 is used to provide an elastic force in the direction of the viewing window 11 for the cleaning brush 24, and the elastic force provided by the elastic member 25 to the end of the cleaning brush 24 close to the rotating shaft 21 is less than the elastic force provided by the elastic member 25 to the end of the cleaning brush 24 far from the rotating shaft 21.

[0035] By applying the technical solution of the utility model, the driving motor can drive the fixing frame to rotate through the rotating shaft 21, and then drive the cleaning brush 24 to rotate on the surface of the window 11 to sweep away the dust on the surface of the window 11, thereby ensuring the monitoring effect of the camera assembly. In addition, the cleaning brush 24 can approach the direction of the window 11 under the elastic action of the elastic member 25, so that the cleaning brush 24 can be closely attached to the surface of the window 11, preventing a gap from appearing between the cleaning brush 24 and the window 11, and further ensuring the cleaning effect of the cleaning brush 24 on the window 11. In the traditional technical solution, since a cantilever structure is formed between the fixing frame and the rotating shaft 21, the present application arranges the elastic member 25 to provide a smaller elastic force to the end of the cleaning brush 24 close to the rotating shaft 21 than the elastic force provided to the end of the cleaning brush 24 away from the rotating shaft 21. This can reduce the warping of the end of the cantilever structure caused by the fixing frame being fixed on one side. The pressure difference of the elastic member 25 enables the cleaning brush 24 to effectively linearly fit the window 11, so that the force of the cleaning brush 24 on the window 11 is more uniform, thereby ensuring the consistency of the dust removal effect and further improving the use effect of the cleaning brush 24.

[0036] Specifically, in the present application, the fixing frame includes a first support plate 22 and a second support plate 23, both of which are fixedly connected to the rotating shaft 21, a cleaning brush 24 is arranged on the second support plate 23, the first support plate 22 is located on the side of the second support plate 23 away from the viewing window 11, and an elastic member 25 is arranged between the first support plate 22 and the second support plate 23 to drive the second support plate 23 to approach the viewing window 11. Through the above arrangement, the elastic member 25 is arranged between the first support plate 22 and the second support plate 23, and the first support plate 22 and the second support plate 23 can provide a shielding effect on the elastic member, thereby preventing dust from accumulating at the connection between the rotating shaft 21 and the body 10. Compared with the technical solution in which the elastic member is exposed to the outside in the traditional technology, such an arrangement can also prevent dust from being deposited at the connection structure between the elastic member 25 and the fixing frame, and does not require frequent manual maintenance, and has high durability.

[0037] In some feasible embodiments of the present application, the second support plate 23 may be made of an elastic material to simultaneously provide an elastic force for the cleaning brush 24 toward the window 11 .

[0038] In a specific embodiment of the present application, refer to Figure 2 and Figure 3As shown, the elastic member 25 is a spring plate, which has a first bent portion 251, a connecting portion 252 and a second bent portion 253. The first bent portion 251 and the second bent portion 253 are respectively arranged at both ends of the connecting portion 252, and both are bent away from the first support plate 22. The first bent portion 251 is arranged at one end of the connecting portion 252 close to the rotating shaft 21. The connecting portion 252 is fixedly connected to the first support plate 22. The elastic force provided by the first bent portion 251 to the second support plate 23 is less than the elastic force provided by the second bent portion 253 to the first support plate 22. Through the above arrangement, the first bent portion 251 and the second bent portion 253 are bent towards the first support plate 22 to provide an elastic force to the second support plate 23, and the elastic force provided by the first bent portion 251 to the second support plate 23 is less than the elastic force provided by the second bent portion 253 to the first support plate 22, which can reduce the elastic force received by the second support plate 23 in the direction away from the rotating shaft 21 and reduce the warping at the end caused by the cantilever structure after the second support plate 23 is fixed on one side.

[0039] This application Figure 2 and Figure 3 The first bent portion 251 and the second bent portion 253 shown in it extend in directions away from each other. It can be understood that the first bent portion 251 and the second bent portion 253 can also extend in directions close to each other, or extend in the same direction, as long as the first bent portion 251 and the second bent portion 253 can provide an elastic force to the second support plate 23.

[0040] Optionally, the angle between the first bent portion 251 and the first support plate 22 is equal to the angle between the second bent portion 253 and the first support plate 22, and the length of the first bent portion 251 is greater than the length of the second bent portion 253, so that the elastic force provided by the first bent portion 251 to the second support plate 23 can be less than the elastic force provided by the second bent portion 253 to the first support plate 22.

[0041] Optionally, the angle between the first bent portion 251 and the first support plate 22 is greater than the angle between the second bent portion 253 and the first support plate 22, and the length of the first bent portion 251 is equal to the length of the second bent portion 253, and it can also make the elastic force provided by the first bent portion 251 to the second support plate 23 less than the elastic force provided by the second bent portion 253 to the first support plate 22.

[0042] In other embodiments of this application, the elastic member 25 can also be set as a plurality of springs. The plurality of springs are arranged at intervals along the extending direction of the second support plate 23. The plurality of springs are all in a compressed state to provide an elastic force towards the window 11 side to the second support plate 23, and the elastic forces of the plurality of springs can gradually increase in the direction away from the rotating shaft 21, so that the second support plate 23 can overcome the warping at the end caused by the cantilever structure.

[0043] Specifically, the lengths of multiple springs can gradually increase in a direction away from the rotating shaft 21, or the elastic coefficients can gradually increase in a direction away from the rotating shaft 21.

[0044] It can be understood that at least two springs are provided.

[0045] Specifically, the fixing bracket further includes a dust shield 26. The dust shield 26 is disposed between the first support plate 22 and the second support plate 23. The dust shield 26, the first support plate 22, and the second support plate 23 cooperate to enclose an accommodation cavity 201, and the elastic member 25 is located in the accommodation cavity 201. During the operation of the imaging assembly, the camera can rotate around the horizontal and vertical directions as needed. During the rotation process, the fixing bracket will also rotate accordingly. There is a gap between the first support plate 22 and the second support plate 23, and dust may fall into this gap from above and accumulate. By providing the dust shield 26 between the first support plate 22 and the second support plate 23, it is possible to prevent dust from entering the accommodation cavity 201, thereby improving the durability of the cleaning part.

[0046] Specifically, the dust shield 26 can be disposed on the first support plate 22 and extend toward the second support plate 23; or it can be disposed on the second support plate 23 and extend toward the first support plate 22.

[0047] It can be understood that multiple dust shields 26 can be provided. The multiple dust shields 26, the first support plate 22, and the second support plate 23 cooperate together to enclose the accommodation cavity 201.

[0048] Further, along the extending direction of the second support plate 23, the distance from the cleaning brush 24 to the second support plate 23 gradually increases from the end away from the rotating shaft 21. Through the above setting, the cleaning brush 24 can compensate for the warping of the end caused by the cantilever structure of the second support plate 23 after being fixed on one side through its own thickness, ensuring that the cleaning brush 24 can effectively linearly fit the window 11.

[0049] In this application, the cleaning brush 24 can be a brush or a rubber brush, as long as it can clean the window 11.

[0050] In this application, limiting holes 202 are provided on both the first support plate 22 and the second support plate 23. The rotating shaft 21 is inserted into the limiting holes 202 of the first support plate 22 and the second support plate 23 to limit the rotation of the first support plate 22 and the second support plate 23 relative to the rotating shaft 21. Through the above setting, the limiting holes 202 can form a rotation-stopping structure to prevent the first support plate 22 and the second support plate 23 from rotating relative to the rotating shaft 21. Since the cleaning brush 24 will closely adhere to the window 11 under the elastic action of the elastic member 25, which generates a certain resistance to the rotation of the second support plate 23, by providing the rotation-stopping structure, it is possible to prevent the asynchronous rotation between the first support plate 22 and the second support plate 23, ensure that the elastic member 25 can correspond to the second support plate 23, and improve the stability of the movement of the cleaning part.

[0051] Specifically, the inner wall of the limiting hole 202 can be provided with a cut surface structure, so that the limiting hole 202 forms a special-shaped hole, and the rotating shaft 21 is adapted to the shape of the special-shaped hole. The rotation of the first support plate 22 and the second support plate 23 relative to the rotating shaft 21 is restricted by the cut surface structure.

[0052] In the present application, a clamping groove 231 is provided on the second support plate 23, and the cleaning brush 24 is clamped and matched with the clamping groove 231. Such a setting facilitates the replacement of the cleaning brush 24 and can also prevent the cleaning brush 24 from falling off.

[0053] As Figure 4 and Figure 5 shown, the present application also provides a monitoring device. The monitoring device includes a base 01, a camera assembly, and a dust shield 02. Among them, the camera assembly is the above-mentioned camera assembly. The camera assembly is rotatably arranged on the base 01 around the vertical direction. The dust shield 02 is arranged between the base 01 and the camera assembly and covers the upper part of the camera assembly. The outer diameter of the dust shield 02 gradually decreases in the direction away from the camera assembly. Through the above setting, the camera assembly can rotate around the vertical direction to achieve a larger monitoring range. And in the present application, by setting the dust shield 02, the gap between the camera assembly and the base 01 can be blocked to prevent dust from entering, ensuring the rotation effect of the camera assembly. Compared with the traditional technical solution of using an oil seal for vertical dust shielding, the outer diameter of the dust shield 02 gradually decreases in the direction away from the camera assembly, and the outer surface of the dust shield 02 can form an inclined surface, which can more effectively avoid dust accumulation and extend the maintenance cycle.

[0054] Specifically, the dust shield 02 can be made of an elastic material so that the dust shield 02 can closely adhere to the camera assembly to improve the dust-proof effect of the dust shield 02.

[0055] Specifically, the camera assembly further includes a housing 30, and the dust shield 02 covers the upper part of the housing 30. When the outer peripheral edge of the dust shield 02 does not protrude from the outer peripheral edge of the housing 30, a chamfer structure 31 is provided on the outer peripheral edge of the housing 30, and the outer diameter of the chamfer structure 31 gradually increases in the direction away from the dust shield 02. Through the above setting, the outer peripheral edge of the dust shield 02 not protruding from the outer peripheral edge of the housing 30 can reduce the friction between the dust shield 02 and the housing 30 and ensure the rotation effect of the housing 30. However, dust may accumulate between the dust shield 02 and the housing 30. By setting the chamfer structure 31, dust accumulation can be avoided.

[0056] Specifically, the camera assembly can also rotate around the horizontal direction to further improve the monitoring range of the monitoring device.

[0057] It should be noted that the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0058] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.

[0059] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom" are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present invention; the orientation words "inner, outer" refer to the inside and outside relative to the contour of each component itself.

[0060] For ease of description, spatial relative terms, such as "above", "over", "on the upper surface", "upper", etc., may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0061] In addition, it should be noted that the use of terms such as "first" and "second" to define components is only for the convenience of differentiating the corresponding components. Without further statement, the above terms have no special meaning, and thus should not be construed as limiting the protection scope of the present utility model.

[0062] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A camera assembly, characterized in that: The camera assembly comprises: A body (10), wherein the body (10) has a window (11); A cleaning portion (20) is arranged on the body (10), the cleaning portion (20) comprises a rotating shaft (21) and a fixing frame, a cleaning brush (24) is arranged on the fixing frame, the cleaning brush (24) is arranged toward the viewing window (11), one end of the fixing frame is fixedly connected to the rotating shaft (21) so as to drive the cleaning brush (24) to rotate along the surface of the viewing window (11), and an elastic member (25) is also arranged on the fixing frame, the elastic member (25) is used to provide an elastic force for the cleaning brush (24) in the direction toward the viewing window (11), and the elastic force provided by the elastic member (25) to the end of the cleaning brush (24) close to the rotating shaft (21) is smaller than the elastic force provided by the elastic member (25) to the end of the cleaning brush (24) away from the rotating shaft (21).

2. The camera assembly according to claim 1, characterized in that: The fixing frame comprises a first supporting plate (22) and a second supporting plate (23), the first supporting plate (22) and the second supporting plate (23) are both fixedly connected to the rotating shaft (21), the cleaning brush (24) is arranged on the second supporting plate (23), the first supporting plate (22) is located on a side of the second supporting plate (23) away from the viewing window (11), and the elastic member (25) is arranged between the first supporting plate (22) and the second supporting plate (23) to drive the second supporting plate (23) to approach the viewing window (11).

3. The camera assembly according to claim 2, characterized in that: The elastic member (25) is a spring sheet, and the spring sheet comprises a first bending portion (251), a connecting portion (252) and a second bending portion (253); the first bending portion (251) and the second bending portion (253) are respectively arranged at two ends of the connecting portion (252), and are both bent in a direction away from the first support plate (22); the first bending portion (251) is arranged at one end of the connecting portion (252) close to the rotating shaft (21); the connecting portion (252) is fixedly connected to the first support plate (22); and the elastic force provided by the first bending portion (251) to the second support plate (23) is smaller than the elastic force provided by the second bending portion (253) to the first support plate (22).

4. The camera assembly according to claim 3, characterized in that: The angle between the first bent portion (251) and the first support plate (22) is equal to the angle between the second bent portion (253) and the first support plate (22), and the length of the first bent portion (251) is greater than the length of the second bent portion (253), or, The angle between the first bent portion (251) and the first support plate (22) is greater than the angle between the second bent portion (253) and the first support plate (22), and the length of the first bent portion (251) is equal to the length of the second bent portion (253).

5. The camera assembly according to claim 2, characterized in that: The fixing frame further comprises a dust shield (26), wherein the dust shield (26) is arranged between the first support plate (22) and the second support plate (23), and the dust shield (26), the first support plate (22) and the second support plate (23) cooperate to enclose a receiving cavity (201), and the elastic member (25) is located in the receiving cavity (201).

6. The camera assembly according to claim 2, characterized in that: Along the extension direction of the second support plate (23), the distance between the cleaning brush (24) and the second support plate (23) gradually increases from the end farthest from the rotating shaft (21).

7. The camera assembly according to claim 2, characterized in that: The first support plate (22) and the second support plate (23) are both provided with limiting holes (202), and the rotating shaft (21) is passed through the limiting holes (202) of the first support plate (22) and the second support plate (23) to limit the rotation of the first support plate (22) and the second support plate (23) relative to the rotating shaft (21).

8. The camera assembly according to claim 2, characterized in that: The second support plate (23) is provided with a snap-fitting groove (231), and the cleaning brush (24) is snap-fitted with the snap-fitting groove (231).

9. A monitoring device, characterized in that: The monitoring device comprises: Base(01); A camera assembly, wherein the camera assembly is the camera assembly according to any one of claims 1 to 8, and the camera assembly is rotatably arranged on the base (01) around a vertical direction; A dust shield (02), the dust shield (02) is arranged between the base (01) and the camera assembly, and is covered above the camera assembly, and the outer diameter of the dust shield (02) gradually decreases in a direction away from the camera assembly.

10. The monitoring device according to claim 9, characterized in that: The camera assembly also includes a shell (30), and the dust shield ring (02) is covered above the shell (30). When the outer periphery of the dust shield ring (02) does not protrude from the outer periphery of the shell (30), a chamfered structure (31) is provided on the outer periphery of the shell (30), and the outer diameter of the chamfered structure (31) gradually increases in a direction away from the dust shield ring (02).

Images