Dustproof monitoring camera for corridor

Abstract

The utility model relates to the technical field of dust prevention, in particular to a corridor dust-proof monitoring camera, which comprises a shell and a camera, a hole is formed in the shell, the camera is arranged in the hole, and a cleaning spray head, a plurality of one-way spray heads and a pressure intensity device for providing air pressure for the cleaning spray head and the one-way spray heads are arranged on the shell; according to the camera cleaning device, the cleaning nozzle is used for spraying air to blow off sundries on the surface of the camera, the cleaning nozzle rotates around the axis of the camera, different surfaces of the camera are scoured, the cleaning effect of the surface of the camera is improved, and then the multiple one-way nozzles are used for spraying air flow to form a conical air wall cover, so that the cleaning effect of the camera is improved. Air in the holes is discharged, dust in the air is prevented from falling back to the surface of the camera, protrusions generated by the dust on the surface of the camera are reduced, namely, charge gathering points on the surface of the camera are reduced, impurities continuously accumulated at the positions where the impurities exist on the surface of the camera are reduced, and dust accumulation on the surface of the camera is prevented.

Description

Technical Field

[0001] This utility model relates to the field of dust prevention technology, specifically a dust prevention monitoring camera for building corridors. Background Technology

[0002] A surveillance camera is a device used for monitoring and recording video, typically for security surveillance and monitoring activities. It captures images and sound and transmits them to video recorders or other monitoring equipment. Surveillance cameras primarily use image sensors to convert visual information into electrical signals. These signals are then sent to a processor for digitization and transmitted via a network or other medium to storage devices or monitoring systems. Generally, surveillance cameras use optical lenses to capture events in a scene and use fisheye lenses or other techniques to correct and process image distortion.

[0003] To prevent dust, water, and other debris from the external environment from entering and damaging the camera, and to allow the camera to receive reflected light from the outside environment, transparent materials are typically used to isolate the camera from the outside environment. However, when surveillance cameras are installed in hallways, debris in the air can adhere to the transparent material, blocking reflected light from entering the camera. Furthermore, to obtain a better viewing angle, surveillance cameras are usually installed at a higher position, making it difficult for cleaning personnel to clean them promptly. When debris adheres to the camera, it is generally removed using an air gun from the ground or by climbing stairs and using a cloth. Cleaning is possible, but using an air gun only blows dust and debris away from the camera. The dust remains in the air near the camera and will eventually settle and adhere to it. Using a cloth cannot remove debris from hard-to-reach areas, leaving some debris on the camera. Dust and debris that fall back onto the camera or are not completely wiped away will accumulate on the camera surface and protrude. In dry environments, static electricity can easily form on the transparent material of the camera, and the protruding debris will cause the charge to accumulate, further increasing the camera's ability to attract dust from the air and resulting in poor dust protection.

[0004] Therefore, a new technical solution is needed to address the above problems. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a dustproof monitoring camera for corridors. By spraying airflow onto the camera surface through a cleaning nozzle, the dust on the camera is removed, and a cone-shaped air wall is formed at the camera. This allows the air and dust between the camera and the air wall to be discharged with the airflow, thereby increasing the cleanliness of the air near the camera and preventing dust from falling back down.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A corridor dustproof monitoring camera includes a housing and a camera. The housing has a hole, and the camera is disposed in the hole. The housing is provided with a cleaning nozzle, a plurality of one-way nozzles, and a pressure device for providing air pressure to the cleaning nozzle and the one-way nozzles. The plurality of one-way nozzles are circumferentially disposed on the inner wall of the hole opening. The intersection point of the axes of the plurality of one-way nozzles is located on the axis of the hole and the camera, and their intersection point is located outside the hole and forms an airflow that closes the hole opening. The cleaning nozzle is disposed on the inner wall of the hole and is located between the camera and the hole opening. A drive device is also provided inside the hole to drive the cleaning nozzle to rotate around the hole axis, and the cleaning nozzle faces the camera lens.

[0007] By adopting the above technical solution, airflow is applied to the camera surface by the cleaning nozzle, causing debris on the camera surface to fall off. At the same time, the cleaning nozzle rotates, allowing it to spray the entire surface of the camera, increasing the cleaning effect. Then, the airflow from several unidirectional nozzles forms a cone-shaped air wall that surrounds the camera. The air, dust, and other debris between the camera and the air wall are exhausted to the external environment with the airflow from the unidirectional nozzles. This prevents debris from falling back onto the camera after cleaning, which would affect the cleaning effect, and also prevents debris from forming charge accumulation points on the camera surface. This reduces the adhesion of dust and other debris in the air to a single location on the camera, increasing the dustproof effect.

[0008] The present invention is further configured such that: the pressure device includes a motor and a fan blade; an annular receiving groove is provided on the inner wall of the hole; a fixed ring and a sliding ring arranged in annular shape along the axis of the hole are provided at the opening of the receiving groove; the fixed ring and the sliding ring seal the opening of the receiving groove; and the one-way nozzle and the cleaning nozzle are respectively provided on the fixed ring and the sliding ring and connected to the receiving groove and the hole; a receiving groove for accommodating the motor is provided on the outer surface of the outer shell; and the receiving groove and the receiving groove are connected by a connecting hole; the cross-sectional area of ​​the receiving groove is larger than the cross-sectional area of ​​the connecting hole; and the cross-sectional area of ​​the motor is smaller than the cross-sectional area of ​​the receiving groove; and a fan blade that extends into the connecting hole is fixedly connected to the output shaft of the motor.

[0009] By adopting the above technical solution, the motor is started and the fan blades are driven to rotate. The fan blades rotate and discharge gas into the connecting hole, that is, the gas in the receiving groove is pushed into the connecting hole, and the gas then enters the receiving groove. The gas is then sprayed out through the one-way nozzle and the cleaning nozzle. The receiving groove is sealed by the fixed ring and the sliding ring, so that the gas can only be sprayed out from the one-way nozzle and the cleaning nozzle, thereby increasing the flow rate of the gas sprayed out by the one-way nozzle and the cleaning nozzle.

[0010] The present invention is further configured such that: the driving device includes a baffle fixedly connected to the side of the sliding ring near the storage groove; the fixed ring is fixedly connected to the inner wall of the storage groove; a track protrusion is fixedly connected to both ends of the sliding ring near and away from the fixed ring; and a track groove is opened on both the fixed ring and the inner wall of the storage groove to slide and connect with the track protrusion; the track protrusion and the track groove are coaxial with the hole; and the axis of the connecting hole is tangent to the rotation trajectory of the center position of the baffle.

[0011] By adopting the above technical solution, the airflow flowing into the receiving groove through the connecting hole pushes the baffle to move, thereby causing the baffle and the sliding surrounding camera to move along the trajectory groove, which in turn drives the cleaning nozzle to rotate. This allows the airflow from the cleaning nozzle to be continuously applied to various positions of the camera, increasing the cleaning effect on the camera surface.

[0012] The present invention is further configured such that: the cross-section of the storage groove is rectangular, the cross-section of the baffle is arc-shaped and there is a gap between the baffle and the inner wall of the storage groove, and the baffle extends towards the sliding ring and is located in the middle of the sliding ring and the fixed ring.

[0013] By adopting the above technical solution, when the airflow in the receiving tank pushes the baffle to move, it can also ensure that the airflow can pass through the gap between the baffle and the inner wall of 1 and be sprayed out from several one-way nozzles, thereby increasing the use effect. At the same time, the arc-shaped baffle can reduce the air vibration caused by the gas flowing over the side of the baffle, thereby reducing energy waste.

[0014] The present invention is further configured such that the cross-sectional area of ​​the cleaning nozzle is half of the cross-sectional area of ​​the unidirectional nozzle.

[0015] By adopting the above technical solution, the amount of gas emitted from the cleaning nozzle is reduced, thereby reducing the impact force of the gas emitted from the cleaning nozzle, which in turn reduces the flow velocity of the gas emitted from the cleaning nozzle after contacting the camera surface. This reduces the continued flow of the gas emitted from the cleaning nozzle after contacting the camera surface and its interference with the flow of the gas emitted from the unidirectional nozzle, thus ensuring the stability of the cone-shaped air wall formed by the gas emitted from the unidirectional nozzle.

[0016] In summary, this utility model has the following beneficial effects:

[0017] First, the cleaning nozzle sprays air to blow away debris from the camera surface. Simultaneously, the cleaning nozzle rotates around the camera's axis, rinsing different surfaces of the camera to enhance the cleaning effect. Then, several unidirectional nozzles spray airflow to form a cone-shaped air wall, expelling gas from the holes and preventing dust from falling back onto the camera surface. This reduces dust protrusions on the camera surface, thus reducing points of charge accumulation and preventing the accumulation of debris. This also prevents small black spots on the camera from growing and causing black spots in the image, improving the overall performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the outer shell structure in this utility model;

[0020] Figure 3 This is a cross-sectional view of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the fixing ring in this utility model;

[0022] Figure 5 This is a schematic diagram of the sliding ring structure in this utility model;

[0023] Figure 6 This utility model Figure 5 A schematic diagram of the structure at point A in the middle.

[0024] In the picture:

[0025] 11. Outer shell; 12. Camera; 13. Storage slot; 14. Track slot; 15. Fixing ring; 16. Sliding ring; 17. Fan blade; 18. One-way nozzle; 19. Baffle; 20. Track protruding ring; 21. Cleaning nozzle; 22. Connecting hole; 23. Receiving slot; 24. Motor. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings of the embodiments thereof. Example

[0027] This type of dustproof monitoring camera for building corridors, such as Figures 1 to 6As shown, the device includes a housing 11 and a camera 12. The housing 11 has a hole, and the camera 12 is disposed within the hole. The housing 11 is equipped with a cleaning nozzle 21, several one-way nozzles 18, and a pressure device that provides air pressure to the cleaning nozzle 21 and the one-way nozzles 18. The several one-way nozzles 18 are circumferentially arranged on the inner wall of the hole opening. The intersection point of the axes of the several one-way nozzles 18 is located on the axis of the hole and the camera 12, and their intersection point is located outside the hole, forming an airflow that closes the hole opening. The cleaning nozzle 21 is disposed on the inner wall of the hole and is located between the camera 12 and the hole. At the position between the openings, a drive device is also installed inside the hole to rotate the cleaning nozzle 21 around the hole axis, with the cleaning nozzle 21 facing the mirror surface of the camera 12. The pressure device includes a motor 24 and a fan blade 17. An annular receiving groove 13 is opened on the inner wall of the hole. At the opening of the receiving groove 13, a fixed ring 15 and a sliding ring 16 arranged in annular shape along the hole axis are provided. The fixed ring 15 and the sliding ring 16 seal the opening of the receiving groove 13. The one-way nozzle 18 and the cleaning nozzle 21 are respectively set on the fixed ring 15 and the sliding ring 16 and connect the receiving groove 13 and the hole. The outer surface of the housing 11 has a receiving groove 23 for accommodating the motor 24, and the receiving groove 23 is connected to the receiving groove 13 through a connecting hole 22. The cross-sectional area of ​​the receiving groove 23 is larger than the cross-sectional area of ​​the connecting hole 22, and the cross-sectional area of ​​the motor 24 is smaller than the cross-sectional area of ​​the receiving groove 23. A fan blade 17 that extends into the connecting hole 22 is fixedly connected to the output shaft of the motor 24. The driving device includes a baffle 19 fixedly connected to the side of the sliding ring 16 near the receiving groove 13. The fixed ring 15 is fixedly connected to the inner wall of the receiving groove 13. A rail is fixedly connected to both ends of the sliding ring 16 near and away from the fixed ring 15. The track protrusion ring 20, the fixed ring 15 and the inner wall of the receiving groove 13 are both provided with track grooves 14 that are slidably connected to the track protrusion ring 20, and the track protrusion ring 20 and the track groove 14 are coaxial with the hole. The axis of the connecting hole 22 is tangent to the rotation trajectory of the center position of the baffle 19. The cross-section of the receiving groove 13 is rectangular, the cross-section of the baffle 19 is arc-shaped and there is a gap between it and the inner wall of the receiving groove 13. The baffle 19 extends towards the sliding ring 16 and is located in the middle of the sliding ring 16 and the fixed ring 15. The cross-sectional area of ​​the cleaning nozzle 21 is half of the cross-sectional area of ​​the unidirectional nozzle 18.

[0028] When dust is adsorbed on the surface of camera 12, motor 24 is started. Motor 24 drives fan blade 17 to rotate and introduces air from receiving groove 23 into connecting hole 22. Ambient air flows into receiving groove 23, and gas in connecting hole 22 flows into receiving groove 13 along the tangential direction of the circumference and forms directional airflow. The flowing gas pushes baffle 19 to move, and baffle 19 drives sliding ring 16 to rotate along trajectory groove 14. Sliding ring 16 then drives cleaning nozzle 21 to rotate around the outer ring of camera 12 and always face cleaning nozzle 21. The airflow in receiving groove 13 flows out through one-way nozzle 18 and cleaning nozzle 21. The gas flowing out of cleaning nozzle 21 is affected by... The cleaning nozzle 21 sprays air at a limited angle onto the surface of the camera 12, blowing away dust. The angled spray increases the contact area between the airflow from the nozzle 21 and the camera 12, enhancing the cleaning effect. Simultaneously, the nozzle 21 rotates, cleaning the entire surface of the camera 12 and further improving the cleaning effect. Part of the airflow inside the receiving slot 13 is ejected through one-way nozzles 18. Several one-way nozzles 18 are directed away from the camera 12 and converge on the axis of the camera 12, forming a cone-shaped air wall on the left side of the camera 12 and the aperture. This ensures that the airflow from the one-way nozzles 18 interacts with the camera 12. The relatively enclosed space between the holes allows the gas within it to move closer to the gas ejected from the cleaning nozzle 21 and be carried out by the airflow from the one-way nozzle 18 to the external environment. Simultaneously, the lower pressure at the flow points of the airflow from the one-way nozzles 18 causes the gas in this relatively enclosed space to be drawn closer to the airflow from the one-way nozzles 18 and carried out of the space. This, in turn, carries the dust blown off the camera 12 out of the holes, preventing the dust blown off the camera 12 by the cleaning nozzle 21 from falling back onto the surface of the camera 12, thus reducing the amount of dust on the camera 12 that cannot be effectively cleaned. 2. After surface accumulation and scaling, the phenomenon of protrusion on the surface of camera 12 is greatly prevented, and the charge on the surface of camera 12 is prevented from being affected by external factors. Because the curvature of the sharp part of the object is large and the electric field lines are dense, the potential gradient is large. Therefore, the charge distribution density is greater at the sharper part of the conductor surface, which reduces the charge accumulation at the protruding part of the surface of camera 12, thereby reducing charge concentration, reducing the adsorption effect of static electricity on dust, increasing the dustproof effect, and further reducing the number of cleaning times. At the same time, the cleaning nozzle 21, which rotates and tilts relative to the surface of camera 12 to blow out air, can also blow up the dust at the connection between the inner wall of the hole and camera 12, further increasing the cleaning effect.

[0029] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A dustproof monitoring camera for a corridor, comprising a shell (11) and a camera (12), a hole is formed in the shell (11), and the camera (12) is arranged in the hole, characterized in that: The shell (11) is provided with a cleaning nozzle (21), a plurality of one-way nozzles (18) and a pressure device for providing air pressure for the cleaning nozzle (21) and the one-way nozzles (18). The one-way nozzles (18) are circumferentially arranged on the inner wall of the hole opening. The intersection of the axes of the one-way nozzles (18) is located on the axis of the hole and the camera (12), and the intersection is located outside the hole and forms an air flow that closes the hole opening. The cleaning nozzle (21) is arranged on the inner wall of the hole and located between the camera (12) and the hole opening. A driving device is arranged in the hole to drive the cleaning nozzle (21) to rotate around the axis of the hole. The cleaning nozzle (21) faces the mirror surface of the camera (12).

2. The dustproof monitoring camera for a corridor according to claim 1, characterized in that: The pressure device includes a motor (24) and a fan blade (17). The inner wall of the hole is provided with an annular receiving groove (13). The receiving groove (13) is provided with a fixed ring (15) and a sliding ring (16) arranged along the axis of the hole and in the form of a ring. The fixed ring (15) and the sliding ring (16) seal the opening of the receiving groove (13). The one-way nozzles (18) and the cleaning nozzle (21) are arranged on the fixed ring (15) and the sliding ring (16) respectively and communicate with the receiving groove (13) and the hole. The outer surface of the shell (11) is provided with a receiving groove (23) for accommodating the motor (24). The receiving groove (13) and the receiving groove (23) are communicated through a communication hole (22). The cross-sectional area of the receiving groove (23) is larger than that of the communication hole (22). The cross-sectional area of the motor (24) is smaller than that of the receiving groove (23). The output shaft of the motor (24) is fixedly connected with the fan blade (17) which extends into the communication hole (22).

3. The dustproof monitoring camera for a corridor according to claim 2, characterized in that: The driving device includes a baffle (19) fixedly connected to the sliding ring (16) near the side of the receiving groove (13). The fixed ring (15) is fixedly connected with the inner wall of the receiving groove (13). The sliding ring (16) is fixedly connected with a track convex ring (20) at both ends near and away from the fixed ring (15). The fixed ring (15) and the inner wall of the receiving groove (13) are provided with a track groove (14) for sliding connection with the track convex ring (20). The track convex ring (20) and the track groove (14) are coaxial with the hole. The axis of the communication hole (22) is tangent to the rotation track of the center of the baffle (19).

4. The dustproof monitoring camera for a corridor according to claim 3, characterized in that: The cross section of the receiving groove (13) is rectangular. The cross section of the baffle (19) is arc-shaped and has a gap with the inner wall of the receiving groove (13). The baffle (19) extends to the sliding ring (16) and is located between the sliding ring (16) and the fixed ring (15).

5. The dustproof monitoring camera for a corridor according to claim 1, characterized in that: The cross-sectional area of the cleaning nozzle (21) is half of the cross-sectional area of the one-way nozzle (18).

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