Camera with protective structure

Abstract

The present invention relates to a camera with a protective structure, wherein the shell is provided with a viewing window of a through-hole structure, wherein the through-hole structure includes a first step and a second step arranged around the inner wall of the through-hole structure, wherein the second end face of the glass sheet is sealed to the end face of the first step via a first sealing ring, and the circumferential side face and the second step are formed into a sealed space with an opening, wherein the second sealing ring is installed in the sealed space and can seal the circumferential side face of the glass sheet and the inner wall of the viewing window under the action of a pressure ring. This solution can effectively improve the sealing performance of the connection between the glass sheet and the inner wall of the viewing window through the two-stage sealing structure of the circumferential side face and the end face of the glass sheet, and prevent foreign matter such as water and dust from entering the shell through the gap at the connection to affect the imaging quality or damage the internal components, so that the camera provided by this solution has good protection and waterproof performance, can ensure the imaging quality of the camera, and extend its service life.

Description

Technical Field

[0001] The invention relates to the technical field of camera equipment, and in particular to an array camera with adjustable angle. Background Art

[0002] Video surveillance through cameras is highly reliable, timely, and easy to view, and has been widely used in the security field. The cameras currently used for surveillance include single-lens cameras (such as gun cameras and ball cameras) and multi-lens cameras (such as array cameras). Since surveillance cameras are used outdoors for a long time, the protection and waterproofing of their internal lenses and other components are particularly important. If the lens fogs up or foreign objects such as dust are attached after water ingress, it will affect the image quality of the surveillance screen and may even damage the internal components and affect the service life of the camera. Therefore, it is necessary to strengthen the protection and waterproofing capabilities of surveillance cameras. Summary of the invention

[0003] Based on this, the present application provides a camera with a protective structure, which can improve the protection and waterproof performance of the camera, thereby ensuring the imaging quality of the camera and extending the service life of the camera.

[0004] A camera with a protective structure, characterized in that the camera comprises a housing and a lens assembly arranged in a housing cavity of the housing;

[0005] The housing is provided with a viewing window corresponding to the lens of the lens assembly, and the viewing window is provided with a sealing protection assembly, which includes a glass sheet, a first sealing ring, a second sealing ring and a pressure ring;

[0006] The viewing window is a through-hole structure penetrating the inner and outer surfaces of the shell, and the through-hole structure includes a first step and a second step arranged around the inner wall of the through-hole structure;

[0007] The first end surface of the glass sheet abuts against the pressing ring, the second end surface is sealedly connected to the end surface of the first step through the first sealing ring, the circumferential side surface and the second step are surrounded by a sealed space with an opening, and the opening of the sealed space is arranged opposite to the pressing ring;

[0008] The second sealing ring is installed in the sealed space and can seal and connect the circumferential side surface of the glass sheet and the inner wall of the viewing window under the action of the pressure ring.

[0009] In one embodiment, the second step includes a notch portion and a main body portion;

[0010] The portion of the circumferential side surface of the glass sheet corresponding to the main body is embedded with the main body, and the portion corresponding to the notch is enclosed with the notch to form the sealed space; the pressure ring is tightly connected to the end surface of the main body.

[0011] In one embodiment, the second sealing ring has a first protrusion protruding from the opening of the sealed space, and the first protrusion can be deformed and pressed into the sealed space under the force of the pressure ring, so that the circumferential side of the glass sheet and the inner wall of the viewing window are sealed and connected through the restoring force of the second sealing ring.

[0012] In one embodiment, an annular groove is provided on the end face of the first step, the first sealing ring is installed in the annular groove, and the first sealing ring has a second protrusion protruding from the annular groove, the second protrusion is connected to the second end face of the glass sheet, and can be deformed and pressed into the annular groove under the force of the glass sheet, so that the second end face of the glass sheet and the end face of the first step are sealed and connected through the restoring force of the first sealing ring.

[0013] In one embodiment, a side wall of the annular groove is coplanar with a side wall of the second step.

[0014] In one embodiment, the sealing protection assembly further includes a gasket, and the gasket is used to connect the pressure ring and the first end surface of the glass sheet.

[0015] In one of the embodiments, an inner wall of the through hole structure is provided with an internal thread on one side close to the outer surface of the shell, and an outer peripheral surface of the pressure ring is provided with an external thread. The pressure ring can move axially toward the viewing window and lock to the viewing window through the cooperation of the external thread and the internal thread to provide an axial force to compress the first sealing ring and the second sealing ring.

[0016] In one embodiment, the inner circumference of the pressure ring is trumpet-shaped, and the width of the first end surface close to the glass sheet is greater than the width of the second end surface away from the glass sheet.

[0017] In one embodiment, the housing comprises a main housing and a cover plate, and the cover plate and the main housing are combined to form the accommodating cavity;

[0018] The connecting end surface of the cover plate is provided with a first connecting portion, a first groove, and a third protruding portion, and a third sealing ring is provided in the first groove;

[0019] The connecting end surface of the main housing is provided with a second connecting portion, a second groove and a fourth protruding portion, and a fourth sealing ring is provided in the second groove;

[0020] The first connection portion and the second connection portion are in abutment with each other, the first groove and the fourth protrusion are plug-fitted with each other, and the second groove and the third protrusion are plug-fitted with each other, and can be sealed and connected by the third sealing ring and the fourth sealing ring.

[0021] In one of the embodiments, a ventilation port and a ventilation valve are provided at the bottom of the shell to allow gas exchange between the inside and outside of the shell and prevent water outside the shell from entering the inside of the shell.

[0022] The camera with the protection structure mentioned above protects the internal lens assembly through the sealing protection assembly of the shell and the viewing window, wherein when the glass piece in the sealing protection assembly is installed in the viewing window through the pressure ring limit, the end face of the glass piece abuts against the first step arranged around the inner wall of the viewing window, the connection is sealed by the first sealing ring, the circumferential side of the glass piece and the second step enclose a sealed space, and the circumferential side of the glass piece and the inner wall of the viewing window are sealed and connected by the second sealing ring in the sealed space. Compared with the related art that only limits the glass piece to the viewing window without using a sealing ring, or only performs a primary seal on the end face of the glass piece, the present solution can effectively improve the sealing of the connection between the glass piece and the inner wall of the viewing window through the two-stage sealing structure of the circumferential side and end face of the glass piece, isolate foreign matter such as water and dust outside the viewing window, and prevent foreign matter from entering the shell through the gap at the connection and attaching to the lens assembly or other components to affect the imaging quality or even damage the internal components. Therefore, the camera provided by the present solution has better protection and waterproof performance, can ensure the imaging quality of the camera, and extend the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a cross-sectional view of a camera in one embodiment;

[0024] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0025] Figure 3 is an enlarged view of position A in another embodiment;

[0026] Figure 4a A front view of a pressing ring in one embodiment;

[0027] Figure 4b for Figure 4a Cross-sectional view of the medium pressure ring;

[0028] Figure 5 is a cross-sectional view of a ventilation valve in one embodiment;

[0029] Figure 6 is a sectional view of a housing of a camera in another embodiment;

[0030] Reference numerals:

[0031] 1000-camera; 10-housing; 101-cover plate; 1011-first groove; 1012-third protrusion;

[0032] 102-main shell; 1021-second groove; 1022-fourth protrusion; 11-viewing window; 111-first step; 112-second step; 1121-main body; 1122-notch; 12-sealing protection assembly; 121-glass sheet; 122-first sealing ring; 123-second sealing ring; 124-pressure ring; 125-gasket; 13-air exchange valve; 131-valve body; 132-breathable part; 133-sealing part; 134-protective cap; 20-lens assembly; 201-lens; 202-lens bracket; 203-image sensor. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0034] The camera provided in this embodiment can be a single-lens camera or a multi-lens camera. The multi-lens camera can be an array camera, including a plurality of sub-cameras with different shooting angles, that is, the lens of each sub-camera faces a different direction, and each sub-camera shoots a local high-definition video (such as a resolution of 4K) of the target scene. Usually, there is an overlapping area in the field of view of adjacent sub-cameras. By splicing and fusing the local videos shot by each sub-camera, an ultra-high-definition fused video with a large or wide field of view up to 100 million pixels can be obtained, which is suitable for video shooting and security monitoring of larger scenes such as airports, highways, parks, mining areas, sports stadiums, borders, and sea surfaces.

[0035] It should be noted that the present application does not limit the appearance of the camera and the number of lenses. The accompanying drawings are only examples, intended to illustrate the protective structure of the shell window and other main protective structures.

[0036] In one embodiment, Figure 1 As shown, a camera 1000 with a protective structure is provided, comprising a housing 10 and a lens assembly 20. The housing 10 has a receiving cavity, and the lens assembly 20 is installed in the receiving cavity to be protected by the housing 10. The housing 10 can be made of a material with high hardness such as metal to improve the protection strength. The lens assembly 20 generally includes components such as a lens, a lens holder, and an image sensor.

[0037] The housing 10 is provided with a viewing window 11, which is provided corresponding to the lens 21, and the number of the viewing windows 11 can be the same as the number of the lens 21. The viewing window 11 is a through hole structure that penetrates the inner surface and the outer surface of the housing 10, and the shape of the through hole can be circular, square, square-round, etc. It is preferably a circular through hole coaxial with the lens 21, so that when one or more viewing windows are provided on the housing, the size of the viewing window can be matched with the field of view of each lens, and the housing still has sufficient supporting strength, so that the strength of the array camera meets the requirements, and the structure is more compact and the volume is smaller.

[0038] like Figure 2 As shown, the viewing window 11 is installed with a sealing protection assembly 12, including a glass sheet 121, a first sealing ring 122, a second sealing ring 123 and a pressure ring 124, so as to allow external light to pass through the viewing window 11 to reach the lens 21 to achieve image capture, while effectively protecting the internal lens assembly through the secondary sealing structure.

[0039] Specifically, the inner wall of the viewing window 11 is surrounded by a two-step structure, which are a first step 111 and a second step 112. The first end face of the glass sheet 121 abuts against the pressure ring 124, and the second end face is sealed and connected to the end face of the first step 111 through the first sealing ring 122. The circumferential side surface of the glass sheet 121 and the second step 112 are surrounded by a sealed space with an opening, which is equivalent to forming an annular groove, and the opening faces the pressure ring 124. The second sealing ring 123 can be installed in the sealed space. The pressure ring 124 can move axially along the viewing window 11 to provide a force to press the second sealing ring 123, and push the glass sheet 121 to press the first sealing ring 122, so that the glass sheet 121 is tightly fitted with the end face of the first step 111.

[0040] In one implementation, Figure 2 As shown, the axial height of the second step 112 (the height difference between the end faces of the two steps) is less than the thickness of the glass sheet 121, so that when the circumferential side of the glass sheet 121 is engaged with the side wall of the second step 112, part of it protrudes from the second step, and the protruding part forms a sealed space with the end face of the second step 112 and the inner wall of the viewing window. In this implementation, the axial depth of the sealed space can be controlled by controlling the height of the second step, so that the sealed space matches the sealing ring of appropriate size. Since the thicker the sealing ring is, the more likely it is that its local deformation amount will be inconsistent, which will cause local excessive deformation to affect the service life of the sealing ring, and the local deformation is poor to affect the sealing effect. Therefore, it is particularly important to select a sealing ring of appropriate size. Therefore, the height of the second step can be determined according to the thickness of the glass sheet and the appropriate size of the sealing ring.

[0041] In another implementation, Figure 3As shown, the radial width of the end face of the second step 112 can be greater than the radial depth of the sealed space. In this case, the second step 112 can include a main body 1121 and a notch 1122. Among them, the part of the circumferential side surface of the glass sheet 121 corresponding to the main body 1121 is embedded with the side wall of the main body 1121, and the part corresponding to the notch 1122 is enclosed with the notch 1122 to form a sealed space. In this implementation, the inner diameter of the second step 112 (i.e., the inner diameter corresponding to the side wall of the main body 1121) is equivalent to the outer diameter of the glass sheet 121, and the thickness of the glass sheet 121 is equivalent to the height of the second step 112 (the sum of the height of the main body and the notch). The advantage of such a setting is that, on the one hand, the glass sheet 121 can be embedded with the main body 1121 of the second step 112, and the end faces of the main body 1121 and the first step 111 limit the glass sheet, and the installation angle of the glass sheet 121 is accurately controlled (such as achieving coaxiality with the viewing window and the lens), reducing the difficulty of assembly. On the other hand, the end surface of the main body of the second step 112 can abut against the pressing ring 124, playing the role of limiting the pressing ring. Specifically, when the pressing ring 124 abuts against the end surface of the glass sheet 121, it also abuts against the end surface of the main body of the second step 122, so that the pressing ring 124 is limited by the end surface of the second step 122, so as to avoid excessive compression of the pressing ring 124 and damage to the glass sheet 121.

[0042] The two steps can be arranged close to the inner surface of the shell, and accordingly, the glass sheet 121 is close to the inner side of the shell, the pressure ring 124 is close to the outer side of the shell, the first end face of the glass sheet 121 is the outer end face (facing the outside of the shell), and the second end face is the inner end face (facing the inside of the shell). The two steps can also be arranged close to the outer surface of the shell, and accordingly, the glass sheet 121 is close to the outer side of the shell, the pressure ring 124 is close to the inner side of the shell, the first end face of the glass sheet 121 is the inner end face (facing the inside of the shell), and the second end face is the outer end face (facing the outside of the shell).

[0043] In the present solution, the connection between the glass sheet 121 and the viewing window 11 is sealed by two-stage sealing rings, including the end surface connection with the first-stage step 111 is sealed by the first-stage sealing ring 122, and the connection between the circumferential side and the inner wall of the viewing window or the connection with the side wall of the second-stage step 112 is sealed by the second-stage sealing ring 123, which can effectively improve the sealing performance of the connection between the glass sheet 121 and the inner wall of the viewing window 11, isolate foreign matter such as water and dust outside the viewing window, and prevent foreign matter from entering the shell through the gap at the connection and attaching to the lens assembly or other components to affect the imaging quality or even damage the internal components.

[0044] In addition, two-stage sealing rings are provided to respectively seal the end face connection and the circumferential side connection of the glass sheet, rather than using a sealing ring with a groove (with a U-shaped cross section) to circumferentially wrap the glass sheet, so that the volume of the sealing ring can be reduced. Since the sealing ring is a flexible material that can be deformed, if the volume or thickness of the sealing ring is large, it is difficult to ensure that the deformation amount of each part is completely consistent, so it is impossible to ensure that the glass sheet is perpendicular to the optical axis of the lens after installation, and it is even more difficult to ensure that the glass sheet is coaxial with the lens. If the glass sheet is installed at an angle (not perpendicular to the axis of the lens), it will affect the optical path of external light reaching the lens and the image sensor, and the difference between the picture taken by the lens through the glass sheet and the picture directly taken by the lens (when there is no shell) will increase, affecting the imaging quality. In this solution, the sealing ring on the circumferential side of the glass sheet is compressed by the pressing ring, so that the end face of the pressing ring can be tightly fitted with the first end face of the glass sheet, and the second end face of the glass sheet can be tightly fitted with the end face of the first step, thereby ensuring the sealing while more accurately controlling the installation angle of the glass sheet. For example, the end face of the first step is perpendicular to the axis of the viewing window, and the viewing window is coaxial with the lens, so that the glass sheet in the sealing protection assembly can be controlled to be coaxial with the lens, thereby ensuring the imaging quality of the captured image.

[0045] In one embodiment, the second sealing ring 123 has a first protrusion protruding from the opening of the sealed space. The first protrusion can be deformed and pressed into the sealed space under the action of the pressure ring 124, so as to seal the circumferential side of the glass sheet 121 and the side wall of the notch 1122 of the second step 112 through the restoring force of the second sealing ring 123.

[0046] In this embodiment, the radial thickness of the second sealing ring 123 can be equivalent to the radial width of the sealing space, and the axial thickness can be greater than the axial depth of the sealing space, so that when the second sealing ring 123 is installed in the sealing space, part of it protrudes from the sealing space, and the protruding part is the first protruding part. The pressing ring 124 can press the protruding part of the second sealing ring 123 into the sealing space, so that the end face of the pressing ring 124 can fit with the end faces of the glass sheet 121 and the second step 112, and the sealing of the circumferential side of the glass sheet is achieved through the restoring force of the second sealing ring, while the installation angle of the glass sheet 121 is accurately controlled.

[0047] In one embodiment, the end face of the first step 111 is provided with an annular groove, and the first sealing ring 122 is installed in the annular groove, and when the first sealing ring 122 is installed in the annular groove, it has a second protrusion protruding from the annular groove. The second protrusion is connected to the end face of the glass sheet 121, and can be deformed and pressed into the annular groove under the force of the pressing ring 124 pushing the glass sheet 121, so that the second end face of the glass sheet and the end face of the first step are sealed and connected by the restoring force of the first sealing ring. Optionally, one side wall (outer side wall) of the annular groove is coplanarly arranged with the side wall of the second step 112 (or coplanarly arranged with the side wall of the main body 1121 of the second step 112), so that the sealing ring can seal the edge of the end face of the glass sheet 121, and cooperate with the sealing of the circumferential side of the glass sheet to more effectively prevent water and other foreign matter from penetrating. Optionally, the first sealing ring 122 and the second sealing ring 123 can be O-rings.

[0048] In one embodiment, the sealing protection assembly 12 further includes a gasket 125, which is used to connect the pressure ring 124 and the first end surface of the glass sheet 121. That is, the pressure ring 124 does not directly contact the glass sheet 121, but uses the gasket 125 as an intermediate medium. Since the pressure ring 124 is usually made of metal, if it directly contacts the glass sheet 121, it is easy to scratch and damage the glass sheet, so the gasket 125 is used as a protective medium. The gasket 125 can be a plastic material such as polytetrafluoroethylene or other materials with a lower hardness than the glass sheet.

[0049] In one embodiment, the inner wall of the viewing window 11 of the through-hole structure is provided with an internal thread on one side close to the outer surface of the housing 10, and the outer peripheral surface of the pressing ring 124 is provided with an external thread. Thus, the pressing ring 124 can move axially toward the viewing window 11 and lock on the inner wall of the viewing window 11 through the cooperation of the external thread and the internal thread, so as to provide an axial force to press the first sealing ring 122 and the second sealing ring 123, and fix and limit the glass sheet 121. Optionally, as Figure 4a and Figure 4b As shown, the inner circumference of the pressing ring 124 is at least partially trumpet-shaped, and the width of the first end face close to the glass sheet 121 is greater than the width of the second end face away from the glass sheet 121, that is, the thickness of the pressing ring 124 gradually decreases from the first end face to the second end face (the thickness of the partial structure close to the first end face can be the same, and then the thickness gradually decreases), and in the cross section of the pressing ring 124, the section line corresponding to the outer circumference and the section line corresponding to the inner circumference are not parallel. Among them, the section line corresponding to the outer circumference is parallel to the axis, and the angle between the section line corresponding to the trumpet-shaped part of the inner circumference and the axis is greater than 0°, so that the first end face has a larger force-bearing surface, which can fully contact and press against the end face of the glass sheet 121 and the end face of the second step, and it is not easy to damage the glass sheet. The second end face is narrower, which can provide external light within a larger field of view to reach the lens through the glass sheet, meeting the field of view range requirements of the lens.

[0050] If the section lines of the inner and outer surfaces of the pressure ring are parallel to the axis, it is impossible to take into account both the strength and field of view requirements of the pressure ring. If two pressure rings with the same and smaller end faces are used to meet the field of view requirements, the support strength may be insufficient. Therefore, the present solution sets a trumpet-shaped structure so that the pressure ring 124 has sufficient support strength when fixed to the inner wall of the viewing window, and can provide a sufficient field of view light range, and can make the structure of the array camera compact and reduce the volume (avoiding the use of thick and large pressure rings and the opening of large viewing windows, resulting in a larger volume of the array camera).

[0051] Optionally, the second end face of the pressing ring 124 is provided with a notch for cooperating with the protrusion of the installation tool so as to install or remove the pressing ring by rotating the installation tool. Optionally, the pressing ring can be arranged close to the outer side of the shell, and the glass sheet can be arranged close to the inner side of the shell, so that the sealing protection component can be installed outside the shell and the pressing ring can be tightened, which is particularly suitable for array cameras with an arc-shaped structure that surrounds the inner side of the viewing window of the shell. The operating convenience of installing the sealing protection component inside the shell of the arc-shaped structure is poor, especially when the pressing ring is rotated by the installation tool, a large operating space is required, so the pressing ring is arranged outside the shell, and can be installed outside the shell, which is more convenient to operate.

[0052] In one embodiment, a ventilation valve 13 is provided at the bottom of the shell 10, which is used to exchange gas between the inside and outside of the shell through the ventilation valve 13, and water outside the shell can enter the inside of the shell. The camera improves its waterproof performance through a sealed protective structure, that is, the camera shell has good sealing performance. When the camera is transported from a low altitude to a high altitude, or vice versa, the change in atmospheric pressure will cause a pressure difference between the inside and outside of the camera shell, which may easily cause the glass sheet 121 to be subjected to a large pressure and damaged. In addition, the camera will generate heat during operation. If the heat cannot be dissipated in time, it may also cause the internal pressure to increase. Therefore, a ventilation valve 13 can be provided at the bottom of the shell 10 to achieve real-time ventilation and waterproof and dustproof, and ensure the balance of internal and external pressures without destroying the waterproof and dustproof performance of the shell.

[0053] Specifically, Figure 5As shown, the ventilation valve 13 includes a valve body 131, a breathable member 132, a sealing member 133 and a protective cap 133. The valve body 131 includes a main body and a mounting portion, the main body is embedded in the bottom of the shell 10, and the main body is provided with an axially penetrating through hole, which can connect the inside and outside of the shell. The mounting portion is located outside the shell 10, and the breathable member 132 is installed on the mounting portion. The protective cap 133 can be interference fit with the mounting portion to tightly fix the breathable member 132. The circumferential side of the protective cap 133 is provided with a through hole, which allows gas to pass through while protecting the breathable member 132. The breathable member 132 can be a device with waterproof and breathable properties such as a breathable film or breathable glass. The connection between the mounting portion and the outer surface of the shell can be sealed by a sealing member 132 to prevent foreign matter such as water from penetrating into the shell through the gap at the connection.

[0054] It is understandable that the housing 10 can be formed by multiple parts, for example, it can be divided into upper and lower parts, front and rear parts, or left and right parts. When divided into upper and lower parts, one of the upper cover and the bottom cover can be a plate-like structure, and the other can be a concave structure with a storage space, and the viewing window can be opened on the part of the concave structure. Preferably, the upper cover is a concave structure with an opening facing downward, such as Figure 1 As shown, the upper cover (inverted) is on the bottom plate, and components such as the lens assembly are installed on the bottom plate. Compared with installing internal components in a concave structure, it is more convenient to install components on the bottom plate. Compared with the connection at the top when the upper cover is a plate-like structure, the connection between the concave upper cover and the bottom plate is located at the bottom, and the overall waterproof performance is better.

[0055] In one embodiment, Figure 6 As shown, the housing 10 of the camera may be a front and rear split structure, including a cover plate 101 and a main housing 102, and the cover plate 101 may be fixedly connected to the main housing 102 by screws and enclosed to form a receiving cavity for installing the lens assembly 20. The cover plate 101 may be a front cover plate and / or a rear cover plate, and the viewing window may be opened on the front cover plate.

[0056] The connecting end surface of the cover plate 101 is provided with a first groove 1011 and a third protrusion 1012, and a third sealing ring is provided in the first groove 1011. The connecting end surface of the main housing 102 is provided with a second groove 1021 and a fourth protrusion 1022, and a fourth sealing ring is provided in the second groove 1021. The first groove 102 can be plugged and matched with the fourth protrusion 1022, and the second groove 1021 can be plugged and matched with the third protrusion 1012. When the cover plate 101 is covered on the main housing 102, the protrusion of the cover plate 101 is inserted into the groove of the main housing 102, and the protrusion of the main housing 102 is inserted into the groove of the cover plate 101. The sealing ring in the groove is squeezed by the protrusion so that the sealing ring is deformed, and the sealing connection is achieved by the restoring force of the sealing ring. Therefore, the sealing performance of the camera can be further improved through the two-stage sealing structure of the cover plate and the main housing.

[0057] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0060] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0061] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A camera with a protective structure, characterized in that: The camera comprises a housing and a lens assembly arranged in a receiving cavity of the housing; The housing is provided with a viewing window corresponding to the lens of the lens assembly, and the viewing window is provided with a sealing protection assembly, which includes a glass sheet, a first sealing ring, a second sealing ring and a pressure ring; The viewing window is a through-hole structure penetrating the inner and outer surfaces of the shell, and the through-hole structure includes a first step and a second step arranged around the inner wall of the through-hole structure; The first end surface of the glass sheet abuts against the pressing ring, the second end surface is sealedly connected to the end surface of the first step through the first sealing ring, the circumferential side surface and the second step are surrounded by a sealed space with an opening, and the opening of the sealed space is arranged opposite to the pressing ring; The second sealing ring is installed in the sealed space and can seal and connect the circumferential side surface of the glass sheet and the inner wall of the viewing window under the action of the pressure ring.

2. The camera according to claim 1, characterized in that The second step includes a notch portion and a main body portion; The portion of the circumferential side surface of the glass sheet corresponding to the main body is embedded with the main body, and the portion corresponding to the notch is enclosed with the notch to form the sealed space; The pressing ring is tightly connected to the end surface of the main body.

3. The camera according to claim 1, characterized in that The second sealing ring has a first protrusion protruding from the opening of the sealed space, and the first protrusion can be deformed under the force of the pressure ring and pressed into the sealed space, so that the circumferential side surface of the glass sheet and the inner wall of the viewing window are sealed and connected through the restoring force of the second sealing ring.

4. The camera according to claim 1, characterized in that An annular groove is provided on the end face of the first step, the first sealing ring is installed in the annular groove, and the first sealing ring has a second protrusion protruding from the annular groove, the second protrusion is connected to the second end face of the glass sheet, and can be deformed and pressed into the annular groove under the force of the glass sheet, so that the second end face of the glass sheet and the end face of the first step are sealed and connected through the restoring force of the first sealing ring.

5. The camera according to claim 4, characterized in that A side wall of the annular groove is coplanar with a side wall of the second step.

6. The camera according to claim 1, characterized in that The sealing protection assembly also includes a gasket, which is used to connect the pressure ring and the first end surface of the glass sheet.

7. The camera according to claim 1, characterized in that An inner wall of the through hole structure is provided with an internal thread on one side close to the outer surface of the shell, and an outer peripheral surface of the pressure ring is provided with an external thread. The pressure ring can move axially toward the viewing window and lock on the viewing window through the cooperation of the external thread and the internal thread to provide an axial force to compress the first sealing ring and the second sealing ring.

8. The camera according to claim 7, characterized in that The inner circumference of the pressure ring is trumpet-shaped, and the width of the first end surface close to the glass sheet is greater than the width of the second end surface away from the glass sheet.

9. The camera according to claim 1, characterized in that: The housing comprises a main housing and a cover plate, wherein the cover plate and the main housing are combined to form the accommodating cavity; The connecting end surface of the cover plate is provided with a first groove and a third protrusion, and a third sealing ring is provided in the first groove; The connecting end surface of the main housing is provided with a second groove and a fourth protrusion, and a fourth sealing ring is provided in the second groove; The first groove is plug-fitted with the fourth protrusion, and the second groove is plug-fitted with the third protrusion, and the cover plate and the main shell can be sealed and connected through the third sealing ring and the fourth sealing ring.

10. The camera according to claim 1, characterized in that A ventilation valve is provided at the bottom of the shell, which is used to exchange gases between the inside and outside of the shell and prevent water outside the shell from entering the inside of the shell through the ventilation valve.

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