Security monitoring equipment

Abstract

The invention relates to the technical field of monitoring equipment, in particular to security and protection monitoring equipment which comprises a monitoring equipment body, the monitoring equipment body is sleeved with a shell, one side of the shell is fixedly connected with a ventilation plate, and the side, close to the monitoring equipment body, of the ventilation plate is fixedly connected with a motor; the device further comprises an air guide assembly and an adjusting assembly. The motor drives the air guide assembly to work, the air guide assembly achieves the effects of dust removal in good weather and rain and snow prevention in poor weather under the cooperation of the adjusting assembly, the possibility of influence of dust or rain and snow on the monitoring instrument is reduced, and the monitoring effect of the monitoring instrument is improved.

Description

Technical Field

[0001] This invention relates to the field of monitoring equipment technology, specifically a security monitoring device. Background Technology

[0002] In existing technologies, security monitoring equipment constitutes an independent and complete system through image display and recording. It can reflect the monitored object in real time, vividly and realistically. It can replace human supervision for long periods of time in harsh environments and record the data through a video recorder.

[0003] Most security monitoring equipment is installed outdoors in the open. With dust kicked up from the road and in bad weather (such as rain and snow), after working for a long time, dust and snow may accumulate on the surface of the monitoring equipment's probes, making the monitoring equipment's image unclear and reducing its practicality. Manual cleaning and maintenance will increase maintenance costs and manpower.

[0004] To address the aforementioned issues, existing technologies have provided some solutions, such as a surveillance camera with a built-in cleaning device disclosed in Chinese patent application number 202210154642.1 and a panoramic camera disclosed in Chinese patent application number 202011168363.8. Both of these designs can clean the lenses of the surveillance camera. However, the structural design of these designs is relatively complex, adding too many components, which significantly increases the size and weight of the surveillance camera, making it unsuitable for use and product promotion.

[0005] In view of this, in order to overcome the above-mentioned technical problems, the present invention designs a security monitoring device that solves the above-mentioned technical problems. Summary of the Invention

[0006] The technical problem that this invention aims to solve is that after long-term operation, dust and rain and snow may accumulate on the surface of the monitoring equipment's probe, resulting in unclear imaging and low practicality. Manual cleaning and maintenance will increase maintenance costs and manpower.

[0007] This invention provides a security monitoring device, including a monitoring device body, an outer casing for the monitoring device body, a ventilation plate fixedly connected to one side of the casing, and a motor fixedly connected to the ventilation plate near the monitoring device body; it also includes...

[0008] Air guiding component; The air guiding component is located inside the housing and is used to remove impurities and rainwater from the surface of the monitoring device body probe and their impact on the monitoring device body probe;

[0009] Adjustment component; the adjustment component is located at the rear end of the housing, and the adjustment component is used to switch between the dust removal and rain repellency working states of the air guide component.

[0010] Preferably, the air guiding assembly includes,

[0011] A fan; the fan is located inside the housing and is fixedly connected to the motor output end;

[0012] A connecting ring; the connecting ring is fixed inside the housing; the connecting ring has several through holes; the connecting tube is made of engineering plastic, one end face of the connecting tube has an annular open cavity, and several through holes are set on the side wall of the connecting tube and communicate with the open cavity.

[0013] Dust removal pipe; the dust removal pipe is fixedly connected to a portion of the through hole;

[0014] Rain-repelling pipe; the rain-repelling pipe is fixedly connected to a portion of the through hole; the rain-repelling pipe and the dust-removing pipe are arranged in parallel;

[0015] Rain-repelling chamber; the rain-repelling chamber is fixedly connected to the upper part of the shell on the side away from the ventilation plate;

[0016] Rain-repelling hole; the rain-repelling hole is located on the side of the rain-repelling cavity away from the main body of the monitoring equipment;

[0017] Dust removal chamber; the dust removal chamber is fixedly connected to the upper part of the housing away from the ventilation plate, and the dust removal chamber is located between the rain-repellent chamber and the monitoring equipment body;

[0018] Dust removal hole; the dust removal hole is located on the side of the dust removal chamber facing the monitoring equipment body.

[0019] Preferably, the adjustment component includes,

[0020] A metal semi-ring; the metal semi-ring is fixedly connected to the lower part of the connecting ring;

[0021] Through groove; the through groove is formed on the housing near the connecting ring;

[0022] Rubber block; the rubber block is slidably connected to the through groove;

[0023] Electromagnet No. 1; the electromagnet No. 1 is fixed to one side of the rubber block;

[0024] Electromagnet No. 2; Electromagnet No. 2 is fixed to the rubber block on the side away from Electromagnet No. 1.

[0025] Preferably, a cleaning rod is fixed to the top of the rubber block.

[0026] Preferably, the bottom of the cleaning rod has a triangular structure, and the cleaning rod is slidably connected along the housing.

[0027] Preferably, the side of the ventilation panel away from the monitoring equipment body is covered with a tarpaulin.

[0028] Preferably, the through hole at the connection between the dust removal pipe and the connecting block is larger than the dust removal hole; the through hole at the connection between the rain-repelling pipe and the connecting block is larger than the rain-repelling hole.

[0029] Preferably, a filter screen is fixedly connected to the dust removal hole and the rain repellent hole.

[0030] Preferably, the shell material is an iron alloy.

[0031] Preferably, a red reflective strip is adhered to the top of the housing.

[0032] The beneficial effects of this invention are as follows:

[0033] 1. The security monitoring device provided by the present invention uses a motor to drive the air guiding component to work. With the cooperation of the adjustment component, the air guiding component can achieve the effect of dust removal in good weather and rain and snow prevention in bad weather, reducing the possibility of dust or rain and snow affecting the monitoring device body and improving the monitoring effect of the monitoring device body.

[0034] 2. The security monitoring device provided by the present invention, through the cooperation of the adjustment device and the clearing pole, reduces the possibility of snow accumulation affecting the operation of the monitoring device itself, and the moving clearing pole can also drive away birds that are resting, reducing the possibility of the monitoring device being displaced due to a large number of birds, extending the life of the monitoring device and improving the monitoring efficiency of the monitoring device. Attached Figure Description

[0035] The invention will now be further described with reference to the accompanying drawings.

[0036] Figure 1 This is a main body diagram of the present invention;

[0037] Figure 2 This is a cross-sectional view of the present invention;

[0038] Figure 3 yes Figure 2 A sectional view at point A;

[0039] Figure 4 yes Figure 2 A sectional view at point B;

[0040] Figure 5 yes Figure 2 A sectional view at point C;

[0041] In the diagram: 1. Monitoring equipment body; 2. Housing; 22. Ventilation plate; 23. Motor; 3. Air guide assembly; 31. Fan; 32. Connecting ring; 33. Dust removal pipe; 34. Rain-driving pipe; 35. Rain-driving chamber; 36. Dust removal chamber; 37. Dust removal hole; 38. Adjustment assembly; 41. Metal semi-ring; 42. Through groove; 43. Rubber block; 44. Electromagnet No. 1; 45. Electromagnet No. 2; 5. Cleaning rod. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Example 1:

[0044] This invention provides a security monitoring device, including a monitoring device body 1, an outer casing 2 covering the monitoring device body 1, a ventilation plate 22 fixedly connected to one side of the casing 2, and a motor 23 fixedly connected to the ventilation plate 22 near the monitoring device body 1; it also includes...

[0045] Air guiding component 3; The air guiding component 3 is disposed inside the housing 2, and the air guiding component 3 is used to remove impurities and rainwater from the surface of the probe of the monitoring device body 1 and their effects on the probe of the monitoring device body 1.

[0046] Adjustment component 4; The adjustment component 4 is located at the rear end of the housing 2, and the adjustment component 4 is used to switch between the dust removal and rain repellency working states of the air guiding component 3;

[0047] In outdoor locations where security monitoring equipment needs to be installed, workers use mounting brackets to install the equipment at a higher position. This security monitoring equipment is equipped with a power drive control system (this power drive control system is existing technology). Workers operate the power drive control system to start the monitoring device body 1 inside the housing 2, simultaneously driving the motor 23. The motor 23 drives the air guide assembly 3, which draws air from the outside through the ventilation plate 22 during operation, thus achieving heat dissipation for the monitoring device body 1. This reduces the possibility of heat buildup on the motor 23 and the monitoring device body 1 during prolonged operation, extending the lifespan of the monitoring device body 1. Under normal conditions... Furthermore, the air duct component 3 blows away dust from the surface of the probe of the monitoring device body 1. Under the action of wind for a long time, the air duct component 3 reduces the possibility of dust accumulating on the surface of the probe of the monitoring device body 1 for a long time, thereby improving the clarity of the monitoring and the imaging effect of the probe of the monitoring device body 1. In rainy or snowy weather, the staff uses the electric drive control system to control the operation of the adjustment component 4, which causes the air duct component 3 to switch its working mode. The adjustment component 4 works with the air duct component 3 to blow air outward, reducing the possibility of rain and snow affecting the probe of the monitoring device body 1, improving the clarity of the monitoring and the imaging effect of the probe of the monitoring device body 1, and extending the life of the monitoring device body 1.

[0048] The present invention drives the air guide component 3 to work through the motor 23. With the cooperation of the adjustment component 4, the air guide component 3 can achieve the effect of dust removal in good weather and rain and snow prevention in bad weather, reducing the possibility of dust or rain and snow affecting the monitoring equipment body 1 and improving the monitoring effect of the monitoring equipment body 1.

[0049] In one specific embodiment of the present invention, the air guiding assembly 3 includes...

[0050] Fan 31; The fan 31 is located inside the housing 2 and is fixedly connected to the output end of the motor 23;

[0051] Connecting ring 32; the connecting ring 32 is fixedly connected to the inside of the housing 2; the connecting ring 32 has several through holes;

[0052] Dust removal pipe 33; the dust removal pipe 33 is fixedly connected to a portion of the through hole;

[0053] Rain-repelling pipe 34; the rain-repelling pipe 34 is fixedly connected to a portion of the through hole; the rain-repelling pipe 34 and the dust-removing pipe 33 are arranged in parallel;

[0054] Rain-repelling cavity 35; the rain-repelling cavity 35 is fixedly connected to the upper part of the housing 2 away from the ventilation plate 22;

[0055] Rain-repelling hole 36; the rain-repelling hole 36 is located on the side of the rain-repelling cavity 35 away from the monitoring equipment body 1;

[0056] Dust removal chamber 37; The dust removal chamber 37 is fixedly connected to the upper part of the housing 2 away from the ventilation plate 22, and the dust removal chamber 37 is located between the rain-repelling chamber 35 and the monitoring equipment body 1;

[0057] Dust removal hole 38; the dust removal hole 38 is opened on the side of the dust removal chamber 37 facing the monitoring equipment body 1;

[0058] In one specific embodiment of the present invention, the adjustment component 4 includes...

[0059] Metal semi-ring 41; the metal semi-ring 41 is fixedly connected to the lower part of the connecting ring 32;

[0060] Through groove 42; the through groove 42 is formed on the housing 2 near the connecting ring 32;

[0061] Rubber block 43; the rubber block 43 is slidably connected to the through groove 42;

[0062] Electromagnet No. 44; Electromagnet No. 44 is fixedly connected to one side of rubber block 43;

[0063] Electromagnet No. 2 45; Electromagnet No. 2 45 is fixedly connected to the rubber block 43 on the side away from Electromagnet No. 1 44;

[0064] The operator manipulates the electric drive control system to activate the monitoring device 1 inside the housing 2, simultaneously driving the motor 23 to operate intermittently (reducing the frequency of motor 23's operation). The motor 23 causes the fan 31 to rotate, allowing outside air to circulate from the outside of the ventilation plate 22 towards the side of the fan 31 furthest from the motor 23. At the same time, the electric drive control system controls the first electromagnet 44 via wires, energizing it. The first electromagnet 44 and the second electromagnet 45 are connected by a rubber block 43 (this connection method is not unique; detachable bolt connections or non-detachable welding connections can be used). The outer parts of the first electromagnet 44 and the second electromagnet 45 are covered with an insulating layer (ensuring that they do not transmit electrical or magnetic signals through the external housing 2). Therefore, the first electromagnet 44 becomes magnetic under the influence of electricity and attracts the metal semi-ring 41. Electromagnet 44 and Electromagnet 45 are uniformly provided with through holes. The through holes on Electromagnet 44 and Electromagnet 45 are opposite to the through holes on the surface of the connecting ring 32 that connect to the dust removal pipe 33. External gas then flows through the connecting ring 32, the through holes on Electromagnet 44 and Electromagnet 45, into the dust removal pipe 33, and finally reaches the dust removal chamber 37. It blows air onto the surface of the probe of the monitoring equipment body 1 through the dust removal hole 38. On the one hand, it achieves heat dissipation for the monitoring equipment body 1 itself, reducing the possibility of heat accumulation due to the motor 23 and the monitoring equipment body 1 during long-term operation, thus extending the life of the monitoring equipment body 1. On the other hand, the gas ejected from the dust removal hole 38 reduces the possibility of dust accumulating on the surface of the probe of the monitoring equipment body 1 for a long time, improving the clarity of the monitoring by the probe of the monitoring equipment body 1 and improving the imaging effect of the probe of the monitoring equipment body 1.

[0065] When it starts to rain or snow, the staff uses the electric drive control system to switch motor 23 from intermittent to continuous operation. Motor 23 drives fan 31 to continuously draw air from the outside through ventilation plate 22. The electric drive control system transmits signals via wires to de-energize electromagnet 44 and energize electromagnet 45. Electromagnet 45 then attracts metal half-ring 41, and rubber block 43 slides along through groove 42, thereby moving electromagnet 44 away from metal half-ring 41. Electromagnet 44 and electromagnet 45 then interact. The through holes on surface 5 are opposite to the through holes on the connecting ring 32 that connect to the rain-driving tube 34. External gas then flows through the through holes on the connecting ring 32, electromagnet 44, and electromagnet 45 to the rain-driving tube 34, and finally reaches the rain-driving chamber 35. It continuously blows air to the outside through the rain-driving hole 36, reducing the possibility of rain and snow affecting the probe of the monitoring equipment body 1, improving the clarity of the monitoring by the probe of the monitoring equipment body 1, improving the imaging effect of the probe of the monitoring equipment body 1, improving the effect of the monitoring equipment body 1, and extending the life of the monitoring equipment body 1.

[0066] In one specific embodiment of the present invention, the side of the ventilation plate 22 away from the monitoring equipment body 1 is covered with a tarpaulin;

[0067] When motor 23 controls fan 31 to absorb outside air, the outside air will carry some impurities into the monitoring equipment body 1 through ventilation plate 22. The tarpaulin is made of breathable and waterproof material, which can reduce the possibility of impurities entering the housing 2 under normal conditions, and reduce the possibility of rain and snow entering the housing 2 in rainy and snowy weather, thus extending the service life of the monitoring equipment.

[0068] In one specific embodiment of the present invention, the through hole at the connection between the dust removal pipe 33 and the connecting block is larger than the dust removal hole 38; the through hole at the connection between the rain-repelling pipe 34 and the connecting block is larger than the rain-repelling hole 36.

[0069] The through hole at the connection between the dust removal pipe 33 and the connecting block is larger than the dust removal hole 38, which allows the air entering from the dust removal pipe 33 to escape from the dust removal hole 38 more quickly, thereby improving the heat dissipation effect and the dust removal efficiency. This, in turn, improves the clarity of the monitoring by the probe of the monitoring equipment body 1 and the imaging effect of the probe of the monitoring equipment body 1.

[0070] The through hole at the connection between the rain-driving tube 34 and the connecting block is larger than the rain-driving hole 36, which allows the air entering from the rain-driving tube 34 to escape from the rain-driving hole 36 more quickly. This further increases the possibility of the air blowing away rain and snow, reduces the possibility of rain and snow affecting the probe of the monitoring equipment body 1, improves the clarity of the monitoring by the probe of the monitoring equipment body 1, and improves the imaging effect of the probe of the monitoring equipment body 1.

[0071] In one specific embodiment of the present invention, a filter screen is fixedly connected to the dust removal hole 38 and the rain repellent hole 36.

[0072] Under normal weather conditions, since motor 23 operates intermittently, there is a possibility that dust removal hole 38 and rain removal hole 36 may not work at the same time. At this time, dust removal hole 38 and rain removal hole 36 are exposed, reducing the possibility of impurities entering dust removal chamber 37 and rain removal chamber 35 through dust removal hole 38 and rain removal hole 36. This reduces the possibility of impurities clogging dust removal hole 38 and rain removal hole 36 and affecting dust removal and rain removal work, thereby extending the life of monitoring equipment body 1.

[0073] In one specific embodiment of the present invention, the shell 2 is made of an iron alloy;

[0074] Iron is one of the most common metals with poor thermal conductivity. The thermal conductivity of alloys is even worse than that of pure metals. The outer shell is made of iron alloy, which on the one hand increases the hardness of the monitoring equipment body 1 and reduces the possibility of damage to the monitoring equipment body 1 due to external forces; on the other hand, it reduces the possibility of low temperature in rainy or snowy weather affecting the electronic components inside the monitoring equipment body 1.

[0075] As a specific embodiment of the present invention, a red reflective strip is attached to the top of the housing 2.

[0076] Birds are sensitive to red. By setting red reflective strips, the likelihood of birds staying on the monitoring device body 1 is reduced, thereby reducing the possibility of the monitoring device body 1 shifting due to a large number of birds, extending the lifespan of the monitoring device body 1, and improving the monitoring efficiency of the monitoring device body 1.

[0077] Example 2: The difference from Example 1 is that a cleaning rod 5 is fixedly connected to the top of the rubber block 43 in this example; the bottom of the cleaning rod 5 is a triangular structure, and the cleaning rod 5 is slidably connected along the shell 2.

[0078] When the outside weather is snowing, although the air blown out of the rain-repelling hole 36 can reduce the possibility of snow affecting the probe of the monitoring equipment body 1, there is still a possibility of snow accumulation in other parts of the monitoring equipment body 1 except for the probe position. The top of the rubber block 43 is welded or tenoned with a cleaning rod 5, which allows the monitoring equipment body 1 to move the cleaning rod 5 when the adjustment component 4 is working, loosening the snow on the top (because the monitoring equipment body 1 has a round hole structure, the snow will slide down along both sides under the action of power). On the one hand, it reduces the possibility of snow affecting the operation of the monitoring equipment body 1, and on the other hand, the moving cleaning rod 5 can also drive away birds that are resting, reducing the possibility of the monitoring equipment body 1 shifting due to a large number of birds, extending the life of the monitoring equipment body 1, and improving the monitoring efficiency of the monitoring equipment body 1.

[0079] The bottom of the cleaning rod 5 has a triangular structure, which makes the snow on the surface of the housing 2 more thoroughly cleaned and covers the holes exposed by the through groove 42, reducing the possibility of rain and snow entering the rain-driving pipe 34 through the through groove 42 and causing blockage, thus improving the working efficiency of the air guide assembly 3 and thereby improving the working efficiency of the monitoring equipment body 1.

[0080] The specific workflow is as follows:

[0081] In outdoor locations where security monitoring equipment needs to be installed, workers use mounting brackets to install the equipment at a higher position. This security monitoring equipment is equipped with an electric drive control system. Workers operate the electric drive control system to activate the monitoring device body 1 inside the housing 2, simultaneously driving the motor 23 to work intermittently. The motor 23 causes the fan 31 to rotate, causing outside air to circulate from the outside of the ventilation panel 22 towards the side of the fan 31 away from the motor 23. At the same time, the electric drive control system controls the first electromagnet 44 via wires, energizing it. The first electromagnet 44 then interacts with the second... Electromagnet 45 is connected by rubber block 43. Electromagnets 44 and 45 are wrapped with an insulating layer. Electromagnet 44 is energized and attracted to metal half ring 41. Through holes are evenly opened on the surface of electromagnets 44 and 45. The through holes on electromagnets 44 and 45 are opposite to the through holes on the surface of connecting ring 32 that connect to dust removal pipe 33. The outside gas then flows through the connecting ring 32 and the through holes on electromagnets 44 and 45 to the dust removal pipe 33, and finally reaches the dust removal chamber 37. It blows air onto the surface of the probe of the monitoring equipment body 1 through the dust removal hole 38.

[0082] When it starts to rain or snow outside, the staff uses the electric drive control system to change the motor 23 from intermittent to continuous operation. The motor 23 drives the fan 31 to continuously draw air from the outside through the ventilation plate 22. The electric drive control system transmits signals through wires to de-energize the first electromagnet 44 and energize the second electromagnet 45. The second electromagnet 45 then attracts the metal half-ring 41, and the rubber block 43 slides along the through groove 42, thereby moving the first electromagnet 44 away from the metal half-ring 41. The through holes on the surfaces of the first electromagnet 44 and the second electromagnet 45 are aligned with the through holes on the connecting ring 32 that connect to the rain-driving tube 34. The outside air then flows through the connecting ring 32, the through holes on the first electromagnet 44 and the second electromagnet 45, into the rain-driving tube 34, and finally reaches the position of the rain-driving chamber 35, where it continuously blows air out through the rain-driving hole 36.

[0083] When the outside weather is snowing, the air blown out of the rain hole 36 can reduce the possibility of snow affecting the probe of the monitoring equipment body 1. However, there is a possibility of snow accumulation in other parts of the monitoring equipment body 1 except for the probe position. The top of the rubber block 43 is welded or tenoned with a cleaning rod 5, which allows the monitoring equipment body 1 to move the cleaning rod 5 when the adjustment component 4 is working, thus loosening the snow on the top.

[0084] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A security monitoring device, comprising a monitoring device body (1), wherein a housing (2) is provided over the monitoring device body (1), and a ventilation plate (22) is fixedly connected to one side of the housing (2); wherein a motor (23) is fixedly connected to the ventilation plate (22) on the side near the monitoring device body (1); characterized in that: It also includes, Air guide assembly (3); The air guide assembly (3) is located inside the housing (2) and is used to remove impurities and rainwater from the surface of the probe of the monitoring equipment body (1) and the influence of the probe of the monitoring equipment body (1); Adjustment component (4); The adjustment component (4) is located at the rear end of the housing (2), and the adjustment component (4) is used to switch the air guide component (3) between dust removal and rain removal.

2. The security monitoring device according to claim 1, characterized in that: The air guiding assembly (3) includes, Fan (31); The fan (31) is located inside the housing (2) and is fixed to the output end of the motor (23); Connecting ring (32); the connecting ring (32) is fixed to the inside of the housing (2); the connecting ring (32) has several through holes; Dust removal pipe (33); the dust removal pipe (33) is fixedly connected to a portion of the through hole; Rain-driving pipe (34); the rain-driving pipe (34) is fixed to a portion of the through hole; the rain-driving pipe (34) and the dust-removing pipe (33) are arranged in parallel; Rain-repelling cavity (35); the rain-repelling cavity (35) is fixedly connected to the upper part of the housing (2) away from the ventilation plate (22); Rain-repelling hole (36); the rain-repelling hole (36) is located on the side of the rain-repelling cavity (35) away from the monitoring instrument (21); Dust removal chamber (37); the dust removal chamber (37) is fixedly connected to the upper part of the housing (2) away from the ventilation plate (22), and the dust removal chamber (37) is located between the rain-repelling chamber (35) and the monitoring instrument (21); Dust removal hole (38); the dust removal hole (38) is opened on the side of the dust removal chamber (37) facing the monitoring instrument (21).

3. The security monitoring device according to claim 1, characterized in that: The adjustment component (4) includes, Metal half-ring (41); the metal half-ring (41) is fixed below the connecting ring (32); Through groove (42); the through groove (42) is formed on the housing (2) near the connecting ring (32); Rubber block (43); the rubber block (43) is slidably connected to the through groove (42); Electromagnet No. 1 (44); the electromagnet No. 1 (44) is fixed to one side of the rubber block (43); Electromagnet No. 2 (45); the electromagnet No. 2 (45) is fixed to the rubber block (43) on the side away from the electromagnet No. 1 (44).

4. A security monitoring device according to claim 3, characterized in that: A cleaning rod (5) is fixedly attached to the top of the rubber block (43).

5. A security monitoring device according to claim 4, characterized in that: The bottom of the cleaning rod (5) has a triangular structure, and the cleaning rod (5) is slidably connected along the shell (2).

6. A security monitoring device according to claim 1, characterized in that: The ventilation panel (22) is covered with a tarpaulin on the side away from the monitoring instrument (21).

7. A security monitoring device according to claim 2, characterized in that: The through hole at the connection between the dust removal pipe (33) and the connecting block is larger than the dust removal hole (38); the through hole at the connection between the rain-driving pipe (34) and the connecting block is larger than the rain-driving hole (36).

8. A security monitoring device according to claim 2, characterized in that: A filter screen is fixedly connected to the dust removal hole (38) and the rain repellent hole (36).

9. A security monitoring device according to claim 1, characterized in that: The shell (2) is made of ferrous alloy.

10. A security monitoring device according to claim 1, characterized in that: A red reflective strip is attached to the top of the housing (2).

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