Camera

Abstract

The invention provides a camera. The camera comprises a camera body, a cover assembly and a blocking cover. The machine body comprises a shell and a lens located in a space defined by the shell. The cover assembly is connected with the machine body and provided with a window corresponding to the lens. The cover assembly is provided with a first airflow channel and an air outlet. The blocking cover can be switched between an opening state and a closing state. In the closed state, the blocking cover and the cover assembly are sealed, and air in the first airflow channel is blown to the window and then is exhausted through the air outlet. When the blocking cover is in the closed state, although the blocking cover and the cover assembly are sealed, airflow introduced into the first airflow channel can still be discharged from the air outlet, and the situation that the airflow abuts against the blocking cover, the blocking cover cannot be normally closed, and the protection function of the blocking cover is affected is avoided.

Description

Technical Field

[0001] The present application relates to the field of video surveillance, and in particular to a camera. Background Art

[0002] The cameras used in die-casting machines are mainly used to monitor the production process of molds and ensure the normal operation of the molds under harsh environments such as high pressure and high temperature. Specifically, the cameras used in die-casting machines can quickly detect the hot and cold defects of the molds, such as cracks, mold sticking, shrinkage, cold shut, etc., by real-time imaging and temperature measurement of the mold surface temperature field and data collection. When the existing cameras are air-cooled, the airflow easily hits the cover, causing it to be unable to close normally, affecting its protective function. Summary of the invention

[0003] The present application provides a camera that prevents airflow from affecting the normal closing of a cover.

[0004] An embodiment of the present application provides a camera, comprising: a body, a cover assembly and a baffle, wherein the body comprises a shell and a lens located in a space surrounded by the shell, the cover assembly is connected to the body and is provided with a window corresponding to the lens, the cover assembly is provided with a first air flow channel and an air outlet, and the baffle can be switched between an open state and a closed state. In the closed state, the baffle is sealed from the cover assembly, and the gas in the first air flow channel is blown toward the window and then discharged through the air outlet.

[0005] Furthermore, the cover assembly includes a seal, and when gas is introduced into the first airflow channel, the gas pushes open the seal to be discharged from the air outlet; when the gas stops entering the first airflow channel or the air pressure decreases, the seal is reset to block the air outlet.

[0006] Further, in the closed state, the pressure applied by the blocking cover on the cover assembly is greater than the pressure of the air pressure when the sealing member is pushed open.

[0007] Furthermore, the cover assembly is provided with an opening corresponding to the viewing window, the opening is communicated with the first air flow channel, and in the open state, the gas in the first air flow channel is discharged through the opening.

[0008] Furthermore, in the closed state, along the length direction of the fuselage, the window, the first airflow channel, the opening and the cover are arranged in sequence.

[0009] Further, the cover assembly includes a boss and a sealing ring fixed to the boss, and in the closed state, the baffle cover is sealed against the sealing ring, the sealing ring includes a sealing portion sealed against the baffle cover, the baffle cover includes a connecting end connected to the body and a free end opposite to the connecting end, the sealing portion includes a first sealing portion sealed against the connecting end and a second sealing portion sealed against the free end, and the height of the second sealing portion is greater than the height of the first sealing portion.

[0010] Furthermore, the cover assembly includes a first cover plate and a second cover plate, the window is arranged on the first cover plate, the opening is arranged on the second cover plate, at least part of the first air flow channel is located in the second cover plate, and at least part of the first air flow channel is located between the first cover plate and the second cover plate.

[0011] Furthermore, the shell is provided with a second airflow channel, the inlet of the second airflow channel is connected to an air source, the air source introduces gas into the second airflow channel, the first airflow channel is connected to the second airflow channel, and the gas in the second airflow channel enters the first airflow channel.

[0012] Furthermore, the first cover plate is provided with a receiving portion, and the second cover plate is provided with a protruding portion, the protruding portion is received in the receiving portion, and the receiving portion is communicated with the second air flow channel.

[0013] Furthermore, the air outlet is arranged between the second cover plate and the edge of the first cover plate, and the sealing member is fixed to the second cover plate.

[0014] Furthermore, the air outlet is in the shape of an arc-shaped long strip, the sealing member includes an arc-shaped base, a connecting portion extending from the base, and a buckle arranged on the connecting portion, the second cover plate is provided with a through hole, after the connecting portion is inserted into the through hole, the buckle is buckled with the second cover plate, and the base is located between the second cover plate and the first cover plate to seal the air outlet.

[0015] Furthermore, the camera includes a cylinder, a protective cover and a bracket, the bracket is fixed to the shell, the cylinder and the protective cover are fixed to the bracket, the cylinder is located in the space surrounded by the protective cover, the baffle is connected to the cylinder, and the cylinder provides power for opening and closing the baffle.

[0016] The camera of the embodiment of the present application is provided with a cover assembly, and the cover assembly is provided with an air outlet. When the cover is in a closed state, although the cover and the cover assembly are sealed, the airflow entering the first airflow channel can still be discharged from the air outlet to prevent the airflow from hitting the cover, causing the cover to be unable to close normally, thereby affecting the protective function of the cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of a camera according to an embodiment of the present application, wherein the cover is in a closed state;

[0018] Figure 2 yes Figure 1 A schematic diagram of the camera shown, wherein the cover is in an open state;

[0019] Figure 3 yes Figure 1 A schematic diagram of the first cover plate, the second cover plate and the sealing member of the camera after being assembled;

[0020] Figure 4 yes Figure 3 A schematic diagram of the first cover body shown;

[0021] Figure 5 yes Figure 1 A schematic diagram of a pressure plate of the camera shown;

[0022] Figure 6 yes Figure 1 A schematic diagram of a second cover plate of the camera shown;

[0023] Figure 7 yes Figure 6 A cross-sectional view of the second cover plate shown;

[0024] Figure 8 yes Figure 7 An enlarged view of the A prescription frame portion of the cross-sectional view shown;

[0025] Fig. 9 yes Figure 2 a cutaway view of the camera shown;

[0026] Fig.10 yes Fig. 9 An enlarged view of the B prescription frame portion of the cross-sectional view shown;

[0027] Fig.11 yes Figure 1 a cutaway view of the camera shown;

[0028] Fig.12 yes Fig.11 An enlarged view of the C prescription frame portion of the cross-sectional view shown;

[0029] Fig.13 yes Fig.11 An enlarged view of the circled portion at D of the cross-sectional view shown;

[0030] Fig.14 yes Figure 3 A schematic diagram of the seal shown;

[0031] Fig.15 yes Figure 2 Schematic diagram of the sealing ring shown;

[0032] Fig.16 yes Fig.15 A schematic cross-sectional view of the sealing ring shown;

[0033] Fig.17 yes Fig.16 An enlarged view of the circled portion at position E of the sealing ring shown;

[0034] Fig.18 yes Fig.16 An enlarged view of the circled portion at F of the sealing ring shown;

[0035] Fig.19 yes Figure 1 The schematic diagram of the camera shown is after the protective cover is removed;

[0036] Fig. 20 yes Fig.19 A schematic diagram of a camera bracket shown;

[0037] Fig.21 yes Fig.19 Schematic diagram of the support column of the camera shown. DETAILED DESCRIPTION

[0038] Here, the technical solutions in the embodiments (or "implementations") of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0039] If there are terms involving directional indications or positional relationships in the embodiments of the present application (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 relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance.

[0040] Ginseng Figures 1 to 3 The embodiment of the present application provides a camera 100 that can be used on a die-casting machine, mainly used to monitor the mold production process and ensure the normal operation of the mold in harsh environments such as high pressure and high temperature. The present application does not limit the application scenario of the camera 100.

[0041] In some embodiments, the camera 100 includes: a body 1, a cover assembly 2, and a blocking cover 3. The body 1 includes a shell 11 and a lens (not shown) located in a space surrounded by the shell 11.

[0042] In some embodiments, the shell 11 is mounted and fixed to the mounting bracket 4 to mount and fix the fuselage 1 .

[0043] In some embodiments, the body 1 can rotate relative to the mounting bracket 4, such as pitch motion and / or circumferential rotation, to adjust the shooting range of the lens.

[0044] In some embodiments, the mounting bracket 4 is U-shaped, including a bottom plate portion 40 and a first ear portion 41 and a second ear portion 42 extending from opposite ends of the bottom plate portion 40. The fuselage 1 is located in a space surrounded by the first ear portion 41, the second ear portion 42 and the bottom plate portion 40 and is rotatably connected to the first ear portion 41 and the second ear portion 42.

[0045] In some embodiments, the first ear portion 41 and the second ear portion 42 are provided with an arc-shaped slide groove 421. The camera 100 includes a screw 43 fixed to the body 1. When the body 1 rotates relative to the mounting bracket 4, the screw 43 slides along the slide groove 421 to limit the maximum rotation angle of the body 1.

[0046] In some embodiments, the cover assembly 2 is connected to the body 1. The cover assembly 2 is provided with a window 20 corresponding to the lens. The cover assembly 2 is provided with a first airflow channel 221 and an air outlet 222. The gas entering the first airflow channel 221 forms a wind wall in front of the window 20 to cool the window 20, thereby extending the service life of the camera 100; or, preventing external dirt from being adsorbed on the window 20, thereby ensuring the clarity of the captured image.

[0047] In some embodiments, the barrier cover 3 can be switched between an open state and a closed state. In the closed state, the barrier cover 3 is sealed with the cover assembly 2, and the gas in the first airflow channel 221 is blown toward the window 20 and then discharged through the air outlet 222. When the barrier cover 3 is in the closed state, although the barrier cover 3 is sealed with the cover assembly 2, the airflow entering the first airflow channel 221 can still be discharged from the air outlet 222 to prevent the airflow from hitting the barrier cover 3, causing the barrier cover 3 to be unable to close normally, thereby affecting the protective function of the barrier cover 3.

[0048] The cover assembly 2 is provided with an opening 2261 corresponding to the window 20 . The opening 2261 is communicated with the first air flow channel 221 . When in the open state, the gas in the first air flow channel 221 is discharged through the opening 2261 .

[0049] Ginseng Figure 2 and Figures 4 to 8 In some embodiments, the cover assembly 2 includes a first cover plate 21 and a second cover plate 22. The window 20 is provided on the first cover plate 21, at least part of the first airflow channel 221 is located in the second cover plate 22, and at least part of the first airflow channel 221 is located between the first cover plate 21 and the second cover plate 22. The cover assembly 2 can be made smaller, which is conducive to the miniaturization of the camera 100.

[0050] In some embodiments, the first cover plate 21 and the housing 11 are separately provided and assembled together.

[0051] In some embodiments, the first cover plate 21 is integrally formed with the housing 11 .

[0052] In some embodiments, the first cover plate 21 and the second cover plate 22 are separately provided and assembled together.

[0053] In some embodiments, the first cover plate 21 and the second cover plate 22 are integrally formed.

[0054] In some embodiments, the first cover plate 21 , the second cover plate 22 , and the housing 11 are fixed by first screws 51 .

[0055] In some embodiments, the first cover plate 21 has a first hole 211, and the second cover plate 22 has a second hole 223. The first screw 51 passes through the second hole 223 and the first hole 211 and is fixed to the housing 11, which saves assembly steps and has a compact structure, which is conducive to miniaturization of the camera 100.

[0056] The first cover plate 21 and the housing 11 may also be fixed by snapping, welding, or bonding.

[0057] The second cover plate 22 and the first cover plate 21 may also be fixed by snapping, welding, or bonding.

[0058] In some embodiments, the housing 11 is cylindrical, and the first cover plate 21, the second cover plate 22, and the blocking cover 3 are circular. The present application does not limit the shapes of the housing 11, the first cover plate 21, the second cover plate 22, and the blocking cover 3.

[0059] Ginseng Figures 3 to 5 and Fig.10 In some embodiments, the cover assembly 2 includes a pressing plate 23, and the pressing plate 23 is fixed to the first cover plate 21 to fix the viewing window 20. The pressing plate 23 is provided with a first central window 230 corresponding to the viewing window 20.

[0060] In some embodiments, the pressing plate 23 and the first cover plate 21 are fixed by a second screw 52. The pressing plate 23 is provided with a third hole 231, and the first cover plate 21 is provided with a fourth hole 212. The second screw 52 passes through the third hole 231 and the fourth hole 212 and is fixed to the first cover plate 21.

[0061] The pressing plate 23 and the first cover plate 21 may also be fixed by snapping, welding, or bonding.

[0062] In some embodiments, the first cover plate 21 is provided with a receiving groove 213 and a second central window 214 corresponding to the window 20 . The window 20 is received in the receiving groove 213 , and the window 20 is clamped between the pressing plate 23 and the first cover plate 21 .

[0063] In some embodiments, the window 20 is sealed from the pressing plate 23 and the first cover plate 21 .

[0064] Ginseng Figure 3 to Figure 4 and Figures 6 to 10 , the first cover plate 21 is provided with a receiving portion 215. The second cover plate 22 includes a protrusion 224. After the first cover plate 21 and the second cover plate 22 are assembled, the protrusion 224 is inserted into the receiving portion 215, which can not only increase the stability of the fixation between the first cover plate 21 and the second cover plate 22, but also align the second hole 223 with the first hole 211 to facilitate the assembly of the first screw 51; at the same time, the protrusion 224 is located at the air inlet 225 of the first airflow channel 221, and when air is taken in at the air inlet 225, air leakage can also be prevented.

[0065] In some embodiments, the housing 11 is provided with a second airflow channel 112, and an inlet 1121 of the second airflow channel 112 is connected to a gas source, and the gas source introduces gas into the second airflow channel 112. The first airflow channel 221 is connected to the second airflow channel 112, and the gas in the second airflow channel 112 enters the first airflow channel 221. The receiving portion 215 is connected to the second airflow channel 112.

[0066] With the provision of the second air flow channel 112 , the gas can also cool the body 1 to extend the service life of the camera 100 .

[0067] In some embodiments, the inlet 1121 is located at the rear portion of the shell 11 , the cover assembly 2 is located at the head portion of the shell 11 , and the cover assembly 2 blocks the front opening of the shell 11 .

[0068] The second air flow channel 112 extends along the length direction of the fuselage 1 , and the first air flow channel 221 extends along the radial direction of the fuselage 1 .

[0069] The air outlet 222 and the air inlet 225 are located at opposite ends of the cover assembly 2 in the radial direction.

[0070] In some embodiments, the shell 11 includes an inner shell 113 and an outer shell 114 , the outer shell 114 is disposed outside the inner shell 113 , the second air flow channel 112 is located between the inner shell 113 and the outer shell 114 , and the inlet 1121 is disposed on the outer shell 114 .

[0071] In some embodiments, the cover assembly 2 can be directly connected to an external gas source.

[0072] In some embodiments, the air inlet 225 includes a funnel portion 2251 to increase the air pressure and improve the sweeping capability of the air curtain formed by the gas at the window 20 .

[0073] Ginseng Figures 6 to 10 In some embodiments, the second cover plate 22 includes a first retaining wall 226 and a second retaining wall 227 disposed outside the first retaining wall 226. The thickness of the second retaining wall 227 is greater than the thickness of the first retaining wall 226. The second retaining wall 227 is fixed to the first cover plate 21. The protrusion 224 is formed by extending from the second retaining wall 227. The pressing plate 23 is located in the space surrounded by the second retaining wall 227.

[0074] A portion of the first air flow channel 221 is disposed in the second blocking wall 227 , and a portion of the first air flow channel 221 is disposed between the first blocking wall 226 and the pressing plate 23 .

[0075] In some embodiments, the funnel portion 2251 is located inside the second blocking wall 227 .

[0076] The opening 2261 is disposed on the second cover plate 22 , specifically, on the first blocking wall 226 of the second cover plate 22 .

[0077] Ginseng Figure 11 to Figure 12 In the closed state, along the length direction of the body 1, the window 20, the first air flow channel 221, the opening 2261 and the blocking cover 3 are arranged in sequence.

[0078] Ginseng Figure 3 , Figure 6 and Figure 13 to Figure 14 In some embodiments, after the first cover plate 21 and the second cover plate 22 are fixed, the second cover plate 22 extends beyond the edge of the first cover plate 21, and the air outlet 222 is disposed between the edges of the second cover plate 22 and the first cover plate 21.

[0079] The cover assembly 2 includes a seal 25 fixed to the second cover plate 22. In the initial state, the seal 25 seals the gas outlet 222. When gas is introduced into the first gas flow channel 221, the gas pushes open the seal 25 to be discharged from the gas outlet 222; when the first gas flow channel 221 stops introducing gas or the gas pressure of the introduced gas decreases, the seal 25 is reset to block the gas outlet 222. The seal 25 realizes the functions of exhausting when ventilation is in progress and sealing when gas is stopped.

[0080] When the blocking cover 3 is in a closed state, the pressure applied by the blocking cover 3 on the cover assembly 2 is greater than the air pressure when the sealing member 25 is pushed open, thereby preventing the blocking cover 3 from being pushed open.

[0081] The sealing member 25 may also be replaced by a waterproof breathable membrane or a filter, or the sealing member 25 may not be provided, and the air outlet 222 may be provided as a plurality of small holes.

[0082] In some embodiments, the air outlet 222 is in the shape of an arc-shaped strip. The sealing member 25 includes an arc-shaped base 251 , a connecting portion 252 extending from the base 251 , and a buckle 253 disposed on the connecting portion 252 .

[0083] The second cover plate 22 is provided with a through hole 2263. After the connecting portion 252 is inserted into the through hole 2263, the buckle 253 is buckled with the second cover plate 22, and the base 251 is located between the second cover plate 22 and the first cover plate 21 to block the air outlet 222.

[0084] In some embodiments, the base 251 is provided with a protrusion 254, and the protrusion 254 abuts against the first cover plate 21. The base 251 is provided with a convex edge 255, the thickness of the convex edge 255 is less than the thickness of the base 251, and the convex edge 255 abuts against the second retaining wall 227 of the second cover plate 22.

[0085] The seal 25 has a first limit formed by the buckle 253 and the second cover plate 22 in the first direction, a second limit formed by the protrusion 254 and the first cover plate 21 in the first direction, and a third limit formed by the flange 255 and the second cover plate 22 in a second direction opposite to the first direction, which can effectively prevent the seal 25 from shaking or shifting, thereby increasing the stability of the seal 25.

[0086] When gas flows into the first air flow channel 221 , the gas presses against the two ends of the base 251 , and the two ends of the base 251 are lifted up to be discharged from the gas outlet 222 . When the pressing force disappears, the two ends of the base 251 return to a sealed state.

[0087] Optionally, the through hole 2263 is disposed on the first retaining wall 226 , and the buckle 253 is buckled with the first retaining wall 226 .

[0088] Ginseng Figure 2 , Figures 7 and 8 and Figure 11 to Figure 12 In some embodiments, the cover assembly 2 includes a boss 2264 and a sealing ring 26 disposed around the periphery of the boss 2264. In the closed state, the blocking cover 3 and the sealing ring 26 are in close contact and sealed.

[0089] In some embodiments, the boss 2264 and the sealing ring 26 are both annular.

[0090] Ginseng Fig. 9 The blocking cover 3 includes a connection end 31 connected to the body 1 and a free end 32 opposite to the connection end 31. The connection end 31 is the top of the blocking cover 3, and the free end 32 is the bottom of the blocking cover 3.

[0091] Ginseng Figures 15 to 18 The sealing ring 26 includes a main body 260 and a sealing portion 261 extending from the main body 260. The main body 260 is disposed around the periphery of the boss 2264, and the sealing portion 261 is in close contact with the blocking cover 3 for sealing.

[0092] In some embodiments, the sealing ring 26 includes a retaining portion 262 extending from the main body 260. Figure 6 The first retaining wall 226 of the second cover plate 22 is provided with a through hole 2265. The buckling portion 262 passes through the through hole 2265 and is buckled and fixed to the second cover plate 22 to increase the stability of the sealing ring 26.

[0093] In some embodiments, the sealing portion 261 includes a first sealing portion 2611 that is sealed with the connecting end 31 and a second sealing portion 2612 that is sealed with the free end 32. The height of the second sealing portion 2612 is greater than that of the first sealing portion 2611.

[0094] In some embodiments, the sealing portion 261 gradually increases in height from the first sealing portion 2611 to the second sealing portion 2612 .

[0095] When the barrier cover 3 is closed, it presses the sealing ring 26, with the compression amount at the first sealing portion 2611 being small and the compression amount at the second sealing portion 2612 being large, so that the rebound force on the top of the barrier cover 3 is small, and it is not easy to cause the bottom of the barrier cover 3 to be unable to fit with the second sealing portion 2612, thereby ensuring the sealing.

[0096] Ginseng Fig. 9 and Figures 19 to 21 In some embodiments, the camera 100 includes a cylinder 6. The baffle 3 is connected to the cylinder 6, and the cylinder 6 provides power for opening and closing the baffle 3.

[0097] The height of the second sealing portion 2612 is greater than that of the first sealing portion 2611, and the stroke of the cylinder 6 is relatively large, so that when the blocking cover 3 is closed, the cylinder 6 still has a partial stroke, thereby increasing the ejection force of the cylinder 6 and making the compression effect of the sealing ring 26 better.

[0098] When the blocking cover 3 is in a closed state, the ejection force of the cylinder 6 is greater than the pressure of the air pressure when the sealing member 25 is pushed open, thereby preventing the blocking cover 3 from being pushed open.

[0099] In some embodiments, the camera 100 includes a protective cover 7 fixed to the housing 11. The cylinder 6 is located in a space surrounded by the protective cover 7. The protective cover 7 protects the cylinder 6, helps to block external dirt, and increases the service life of the cylinder 6.

[0100] In some embodiments, the camera 100 includes a bracket 8 fixed to the housing 11 and a support column 9 fixed to the bracket 8 , the cylinder 6 is fixed to the bracket 8 , and the protective cover 7 is fixed to the support column 9 .

[0101] In some embodiments, the bottom end 91 of the support column 9 is welded and fixed to the bracket 8 , and the top end 92 of the support column 9 passes through the through hole 71 of the protective cover 7 and is fixed to the third screw 53 .

[0102] The blocking cover 3 includes a first pivoting portion 33 and a second pivoting portion 34. The first pivoting portion 33 is rotatably connected to the cylinder 6 via a first connecting rod 35, and the second pivoting portion 34 is rotatably connected to the bracket 8 via a second connecting rod 36.

[0103] In some embodiments, the bracket 8 is substantially U-shaped, the cylinder 6 is fixed to its top 81, and its two side walls 82 are supported by the housing 11. The top 81 is provided with an assembly hole 810. The bottom end of the support column 9 is assembled in the assembly hole 810.

[0104] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without causing conflicts. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.

Claims

1. A camera, characterized in that: include: The body includes a shell and a lens located in a space enclosed by the shell; A cover assembly connected to the body and provided with a window corresponding to the lens, the cover assembly being provided with a first air flow channel and an air outlet; The baffle can be switched between an open state and a closed state. In the closed state, the baffle is sealed from the cover assembly, and the gas in the first airflow channel is blown toward the window and then discharged through the air outlet.

2. The camera according to claim 1, characterized in that The cover assembly includes a sealing member. When gas is introduced into the first airflow channel, the gas pushes open the sealing member to be discharged from the air outlet. When gas is stopped from being introduced into the first airflow channel or the air pressure is reduced, the sealing member is reset to block the air outlet.

3. The camera according to claim 2, characterized in that In the closed state, the pressure applied by the blocking cover on the cover assembly is greater than the air pressure when the sealing member is pushed open.

4. The camera according to claim 2, characterized in that The cover assembly is provided with an opening corresponding to the viewing window, the opening is communicated with the first air flow channel, and in the open state, the gas in the first air flow channel is discharged through the opening.

5. The camera according to claim 4, characterized in that In the closed state, the window, the first air flow channel, the opening and the cover are arranged in sequence along the length direction of the fuselage.

6. The camera according to claim 5, characterized in that The cover assembly includes a boss and a sealing ring fixed to the boss. In the closed state, the baffle cover is sealed against the sealing ring. The sealing ring includes a sealing portion that is sealed against the baffle cover. The baffle cover includes a connecting end connected to the body and a free end opposite to the connecting end. The sealing portion includes a first sealing portion that is sealed against the connecting end and a second sealing portion that is sealed against the free end. The height of the second sealing portion is greater than the height of the first sealing portion.

7. The camera according to claim 4, characterized in that The cover assembly includes a first cover plate and a second cover plate, the window is arranged on the first cover plate, the opening is arranged on the second cover plate, at least part of the first air flow channel is located in the second cover plate, and at least part of the first air flow channel is located between the first cover plate and the second cover plate.

8. The camera according to claim 7, characterized in that The shell is provided with a second airflow channel, the inlet of the second airflow channel is connected to the air source, the air source introduces gas into the second airflow channel, the first airflow channel is connected to the second airflow channel, and the gas in the second airflow channel enters the first airflow channel.

9. The camera according to claim 8, characterized in that The first cover plate is provided with a receiving portion, and the second cover plate is provided with a protruding portion, the protruding portion is received in the receiving portion, and the receiving portion is communicated with the second air flow channel.

10. The camera according to claim 7, characterized in that The air outlet is arranged between the second cover plate and the edge of the first cover plate, and the sealing member is fixed to the second cover plate.

11. The camera according to claim 10, characterized in that The air outlet is in the shape of an arc-shaped long strip, and the sealing member includes an arc-shaped base, a connecting portion extending from the base, and a buckle arranged on the connecting portion. The second cover plate is provided with a through hole. After the connecting portion is inserted into the through hole, the buckle is buckled with the second cover plate, and the base is located between the second cover plate and the first cover plate to seal the air outlet.

12. The camera according to any one of claims 1 to 11, characterized in that: The camera includes a cylinder, a protective cover and a bracket, wherein the bracket is fixed to the shell, and the cylinder and the protective cover are fixed to the bracket. The cylinder is located in a space surrounded by the protective cover, and the baffle is connected to the cylinder, and the cylinder provides power for opening and closing the baffle.

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