CN116980731B

CN116980731B - Explosion-proof camera

Info

Publication number: CN116980731B
Application number: CN202311240273.9A
Authority: CN
Inventors: 汪翊彬; 田伟
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2023-09-22
Filing date: 2023-09-22
Publication date: 2023-11-28
Anticipated expiration: 2043-09-22
Also published as: CN116980731A

Abstract

The application provides an explosion-proof camera which comprises an explosion-proof shell, a lens assembly, a main board, a battery, a first cover plate and a second cover plate. The first cover plate and the explosion-proof housing enclose a first cavity. The second cover plate and the explosion-proof housing enclose a second cavity. The explosion proof housing includes a retaining wall separating the first cavity from the second cavity. The first cover plate is assembled to the explosion proof housing to seal the first cavity. The second cover plate is detachably assembled to the explosion proof housing to seal the second cavity. The lens component is positioned in the first cavity, and the battery is detachably assembled in the second cavity. The main board is positioned in the first cavity or the second cavity, and the lens component and the battery are electrically connected with the main board. The first cavity is separated from the second cavity through the retaining wall, the lens assembly is located in the first cavity, the battery is detachably assembled in the second cavity, the lens assembly is separated from the battery, and the lens assembly in the first cavity cannot be influenced when the battery is detached, so that the explosion-proof camera is applicable to a scene in which electricity is inconvenient.

Description

Explosion-proof camera

Technical Field

The application relates to the technical field of video monitoring, in particular to an explosion-proof camera.

Background

The main stream mode of the explosion-proof camera is explosion-proof, which is to put a conventional common camera in a special shell, wherein the shell has the function of isolating sparks and electric arcs generated by electric components in the shell from explosive mixtures outside the shell and can bear explosion pressure generated when the explosive mixtures entering the shell are detonated by sparks and electric arcs of electric equipment in the shell, and the shell is not damaged; and meanwhile, explosion products in the shell can be prevented from being detonated to the explosive mixture outside the shell, and the explosive mixture outside the shell cannot be burnt and exploded. This special housing is called an "explosion proof housing", and the camera with the explosion proof housing is called an "explosion proof camera". At present, the explosion-proof camera has no self-powered power supply, or the battery cannot be quickly detached and replaced, so that the use requirement can not be well met for the scene of inconvenient power taking.

Disclosure of Invention

The application provides an explosion-proof camera suitable for a scene with inconvenient electricity taking.

The embodiment of the application provides an explosion-proof camera, which comprises an explosion-proof shell, a lens assembly, a main board, a battery, a first cover plate and a second cover plate, wherein the first cover plate and the explosion-proof shell enclose a first cavity, the second cover plate and the explosion-proof shell enclose a second cavity, the explosion-proof shell comprises a retaining wall for separating the first cavity from the second cavity, the first cover plate is assembled to the explosion-proof shell to seal the first cavity, the second cover plate is detachably assembled to the explosion-proof shell to seal the second cavity, the lens assembly is positioned in the first cavity, the battery is detachably assembled in the second cavity, the main board is positioned in the first cavity or the second cavity, and the lens assembly and the battery are electrically connected with the main board.

Further, the main board is located in the first cavity, the explosion-proof camera comprises a connecting wire and a circuit board, the circuit board is located in the second cavity, the battery is electrically connected with the circuit board, the connecting wire is connected with the main board and the circuit board, the retaining wall is provided with a through hole for the connecting wire to pass through, the explosion-proof camera comprises a first sealing piece, and the first sealing piece seals the through hole.

Further, the explosion-proof camera comprises an elastic stress release member fixed to the connecting wire, the retaining wall comprises an inner thread positioned in the through hole, the elastic stress release member comprises an outer thread screwed with the inner thread, and the first sealing member is glue filling arranged between the through hole and the elastic stress release member.

Further, a positioning column extending towards the opening direction of the second cavity is arranged in the second cavity, the battery is provided with a positioning hole, and when the battery is assembled into the second cavity from the opening, the positioning column is inserted into the positioning hole.

Further, the explosion-proof camera includes being located ejector pin, elastic component and with the thimble that circuit board electricity is connected in the second cavity, the ejector pin reaches the thimble all is towards the opening of second cavity, the one end of ejector pin with the elastic component butt, the opposite other end is used for with the battery supports, the battery is followed the opening equipment extremely in the second cavity and the second apron lid is established to when the explosion-proof shell, the contact piece of battery with thimble electric contact, the ejector pin receives the extrusion force extrusion of battery the elastic component, when the second apron is opened, the thrust of elastic component supports the ejector pin, so as to jack up the battery, make the contact piece break away from with the contact of thimble.

Further, a first buckling part is arranged in the second cavity, the battery comprises a second buckling part, the first buckling part is buckled with the second buckling part in the process of taking out the battery from the second cavity, so that the battery is prevented from moving to the outer side of the second cavity, and the battery is pulled, so that the second buckling part passes over the first buckling part, and the battery is taken out.

Further, the first buckling part is stressed and can elastically deform, so that the second buckling part passes over the first buckling part.

Further, the second latching portion is provided with a guide slope, and when the battery is assembled, the first latching portion moves along the guide slope until the second latching portion passes over the first latching portion.

Further, the explosion-proof camera comprises a fixing frame accommodated in the second cavity, the fixing frame comprises a bottom wall and a side wall extending from the bottom wall, an accommodating space is formed by surrounding the bottom wall and the side wall, the battery is assembled in the accommodating space, the bottom wall and the main board are respectively fixed to two opposite sides of the retaining wall, the circuit board is fixed to the bottom wall and is positioned between the bottom wall and the retaining wall, the bottom wall is provided with a first through hole and a second through hole, the end part of the ejector pin penetrates out of the first through hole to be positioned in the accommodating space, the end part of the ejector pin penetrates out of the second through hole to be positioned in the accommodating space, and the first buckling part extends from the side wall to be formed.

Further, the explosion-proof camera includes the location cap, the location cap is fixed to the diapire, the mount includes from the column portion that the diapire extends, column portion is located in the space that the location cap encloses, the ejector pin includes fixed part and from the butt portion and the extension of fixed part extension, the extension enclose to the periphery of fixed part, column portion encloses to the periphery of extension, the tip of butt portion is followed wear out in the second through-hole and be located in the accommodation space, one end cover of elastic component is established to the fixed part, the other end with the location cap supports and holds.

Further, the explosion-proof housing is provided with a first buckle, one end of the second cover plate is rotationally connected with the explosion-proof housing, the other opposite end of the second cover plate is provided with a second buckle, and the first buckle is buckled and fixed with the second buckle.

Further, the explosion-proof camera comprises a lens window and a light supplementing window which are arranged on the first cover plate, the lens window comprises a first polaroid, the light supplementing window comprises a second polarized lens, and the polarization directions of the first polarized lens and the second polarized lens are mutually perpendicular.

Further, the first cover plate and the second cover plate are located at two ends of the explosion-proof housing in the length direction, the explosion-proof camera comprises a third cover plate, the explosion-proof housing is provided with a window communicated with the first cavity, the third cover plate is assembled to one end of the explosion-proof housing in the width direction so as to seal the window, and the third cover plate can be switched between an open state and a closed state.

According to the anti-explosion camera, the first cover plate and the anti-explosion shell of the anti-explosion camera are enclosed to form the first cavity, the second cover plate and the anti-explosion shell are enclosed to form the second cavity, the first cavity is isolated from the second cavity through the retaining wall, the lens component is located in the first cavity, the battery is detachably assembled into the second cavity, the lens component is isolated from the battery, the lens component in the first cavity cannot be influenced when the battery is detached, and the anti-explosion camera is applicable to a scene with inconvenient electricity taking.

Drawings

Fig. 1 is a perspective view of an explosion-proof camera according to an embodiment of the present application;

FIG. 2 is an exploded view of the explosion proof camera shown in FIG. 1;

FIG. 3 is a schematic cross-sectional view of the explosion-proof camera shown in FIG. 1;

FIG. 4 is an enlarged view of the circled portion at A of the cross-sectional schematic view shown in FIG. 3;

FIG. 5 is another cross-sectional schematic view of the explosion-proof camera shown in FIG. 1;

FIG. 6 is a schematic view of the mount of the explosion-proof camera of FIG. 2 prior to assembly with a positioning cap, an elastic member, a push rod, and a circuit board;

FIG. 7 is a schematic cross-sectional view of the holder, positioning cap, elastic member, ejector pin and circuit board shown in FIG. 6 assembled and a battery assembled in the holder;

FIG. 8 is an enlarged view of the circled portion at B of the cross-sectional schematic view shown in FIG. 7;

FIG. 9 is an enlarged view of the circled portion at C of the cross-sectional schematic view shown in FIG. 7;

FIG. 10 is a schematic cross-sectional view of the assembled battery in the holder, wherein the second fastening portion of the battery is in a fastening state with the first fastening portion of the holder after the holder, the positioning cap, the elastic member, the ejector rod and the circuit board shown in FIG. 6 are assembled;

FIG. 11 is an enlarged view of the circled portion at D of the cross-sectional schematic view shown in FIG. 10;

FIG. 12 is a schematic cross-sectional view of the assembled holder, positioning cap, elastic member, ejector pin and circuit board shown in FIG. 6, and assembled with a battery in the holder, wherein the second fastening portion of the battery is disengaged from the first fastening portion of the holder;

FIG. 13 is an enlarged view of the circled portion at E of the cross-sectional schematic view shown in FIG. 12;

FIG. 14 is another perspective view of the explosion proof camera of FIG. 1, wherein the first clasp of the explosion proof housing is clasped with the second clasp of the second cover;

FIG. 15 is a further perspective view of the explosion proof camera shown in FIG. 1, wherein the first catch of the explosion proof housing is disengaged from the catch of the second cover plate;

fig. 16 is a further perspective view of the explosion-proof camera shown in fig. 1, wherein the battery is in a state to be taken out.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with aspects of the application as detailed in the accompanying claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "plurality" means two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and/or "upper" and the like are merely for convenience of description and are not limited to one location or one spatial orientation. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

Referring to fig. 1, 2, 3, 4 and 5, the explosion-proof camera according to the embodiment of the application includes an explosion-proof housing 1, a lens assembly 2, a main board 3, a battery 4, a first cover plate 51 and a second cover plate 52.

The explosion-proof housing 1 is fixed to the bracket 10, for example, by means of screw locking or snap-in. The bracket 10 can be fixed on a tripod to realize the portable placement and random movement of the explosion-proof camera; the bracket 10 may also be fixed to a wall or the like to fix the explosion-proof camera. The explosion-proof camera can move in a pitching manner relative to the bracket 10 so as to adjust the shooting angle of the explosion-proof camera.

Alternatively, the explosion proof camera may swing left and right with respect to the stand 10.

The first cover plate 51 and the explosion-proof housing 1 enclose a first cavity 11, and the second cover plate 52 and the explosion-proof housing 1 enclose a second cavity 12. The explosion proof housing 1 comprises a retaining wall 13 separating the first cavity 11 from the second cavity 12. The first cover plate 51 is assembled to the flameproof housing 1 to seal the first cavity 11, and the second cover plate 52 is detachably assembled to the flameproof housing 1 to seal the second cavity 12. The lens assembly 2 is located in the first cavity 11, and the battery 4 is detachably assembled in the second cavity 12. The main board 3 is located in the first cavity 11 or the second cavity 12, and the lens assembly 2 and the battery 4 are electrically connected with the main board 3.

According to the explosion-proof camera, the first cover plate 51 and the explosion-proof housing 1 of the embodiment of the application enclose a first cavity 11, the second cover plate 52 and the explosion-proof housing 1 enclose a second cavity 12, the first cavity 11 and the second cavity 12 are separated by the retaining wall 13, the lens component 2 is positioned in the first cavity 11, the battery 4 is detachably assembled in the second cavity 12, the lens component 2 is separated from the battery 4, the lens component 2 in the first cavity 11 is not influenced when the battery 4 is detached, so that the explosion-proof camera is suitable for a scene with inconvenient electricity taking and the battery 4 can be replaced to prolong the endurance time of the explosion-proof camera.

Alternatively, the first cover plate 51 may include only a flat plate-shaped end cap plate fixed to the explosion-proof housing 1; a flat-plate-shaped end cap plate and a side wall extending from the end cap plate, the side wall being fixed to the explosion-proof housing 1, may also be included.

An explosion-proof enclosure capable of withstanding the explosion pressure of an internal explosive gas mixture and preventing propagation of the internal explosion to the explosive mixture surrounding the enclosure. The first cavity 11 and the second cavity 12 both meet the IP67 protection level.

The first cover plate 51 and the explosion-proof housing 1 may be fixed by means of screw locking or fastening. The first cover plate 51 and the explosion-proof housing 1 are sealed by a sealing gasket or a sealing glue.

The main board 3 is provided with an explosion-proof circuit, so that the explosion-proof requirement is met. The explosion-proof housing 1 is made of plastic, is light in weight and antistatic, and meets the explosion-proof requirement, so that the explosion-proof camera meets the mobile and portable requirement.

The main board 3 is located in the first cavity 11, and the explosion-proof camera includes a connection line 61 and a circuit board 62. The circuit board 62 is located within the second cavity 12. The battery 4 is electrically connected to the circuit board 62. The connection line 61 connects the motherboard 3 and the circuit board 62. The retaining wall 13 is provided with a through hole 131 for the connecting wire 61 to pass through. The explosion-proof camera includes a first seal (not shown) that seals the through-hole 131.

The first sealing member seals the through hole 131, so that dust is prevented from entering the first cavity 11 from the second cavity 12 through the through hole 131 when the battery 4 is detached, and the explosion-proof camera meets explosion-proof requirements.

The explosion proof camera comprises an elastic stress relief 60 fixed to the connection line 61. The retaining wall 13 includes an internal thread located within the through hole 131. The elastic stress release member 60 includes an external thread screwed with the internal thread, and the first sealing member is a glue-filled member disposed between the through hole 131 and the elastic stress release member 60.

Alternatively, the first sealing member may be a seal ring or the like.

The explosion proof camera includes a communication antenna 14 located within the second cavity 12. The communication antenna 14 is fixed to the explosion-proof housing 1, for example, may be adhered to the explosion-proof housing 1.

Referring to fig. 5, 6, 7, 8 and 9, the explosion-proof camera includes a push rod 71, an elastic member 72 and a push rod 63 electrically connected to the circuit board 62, which are located in the second cavity 12. Both the ejector pin 71 and the ejector pin 63 face the opening of the second cavity 12. One end of the push rod 71 abuts against the elastic member 72, and the opposite end of the push rod 71 abuts against the battery 4. When the battery 4 is assembled into the second cavity 12 from the opening and the second cover plate 52 is covered on the explosion-proof housing 1, the contact piece of the battery 4 is in electrical contact with the ejector pin 63, and the ejector pin 71 is pressed by the extrusion force of the battery 4 to extrude the elastic member 72; when the second cover 52 is opened, the pushing force of the elastic member 72 pushes against the push rod 71 to push the battery 4 open, so that the contact piece is separated from contact with the push rod 63.

The minimum compression force of the elastic member 72 is greater than the dead weight of the battery 4, ensuring that the ejector pin 71 can eject the battery 4.

When the ejector pin 71 is in the ejection state, the end of the ejector pin 71 exceeds the end of the ejector pin 63, so that the ejector pin 63 is ensured not to contact with the contact piece of the battery 4.

Alternatively, when the ejector pin 71 is in a compressed state, the ejector pin 63 is in contact with the battery 4, and at this time, the end of the ejector pin 71 is flush with the end of the ejector pin 63. Alternatively, when the ejector pin 71 is in a compressed state, the end of the ejector pin 63 may exceed the end of the ejector pin 71, or the end of the ejector pin 71 may exceed the end of the ejector pin 63.

The plurality of push rods 71 and the plurality of elastic members 72 may be provided to increase the balance of the stress of the battery 4, so as to ensure the stable contact between the push rods 63 and the contact pieces of the battery 4.

When the second cover plate 52 is opened, the ejector rod 71 ejects the battery 4 for a certain distance, so that the battery 4 is conveniently taken out; when the second cover plate 52 is opened, the battery 4 is separated from contact with the thimble 63, and the explosion-proof camera is powered off, so that the use safety of the explosion-proof camera is ensured.

Alternatively, the ejector pin 71 and the elastic member 72 may not be provided, and the battery 4 may be kept in contact with the ejector pin 63 when the second cover 52 is opened.

The explosion-proof camera comprises a fixing frame 8 accommodated in the second cavity 12. The holder 8 includes a bottom wall 81 and a side wall 82 extending from the bottom wall 81. The bottom wall 81 and the side wall 82 enclose an accommodating space 821. The battery 4 is assembled into the accommodation space 821. The bottom wall 81 and the main plate 3 are respectively fixed to opposite sides of the retaining wall 13. The circuit board 62 is fixed to the bottom wall 81 and located between the bottom wall 81 and the retaining wall 13, so that not only is the assembly of the circuit board 62 convenient, but also the perforation of the retaining wall 13 is avoided as much as possible, so as not to weaken the explosion-proof function of the explosion-proof housing 1.

The circuit board 62 and the bottom wall 81 may be fixed by means of screw locking or snap-fitting.

Referring to fig. 3, the second cavity 12 gradually contracts from large to small along the direction from the second cover plate 52 to the retaining wall 13, so as to facilitate assembling the fixing frame 8; the receiving space 821 is gradually contracted from large to small along the direction from the second cover plate 52 to the retaining wall 13, so as to facilitate assembling the battery 4.

As shown in fig. 2, the communication antenna 14 is located between the explosion-proof housing 1 and the side wall 82 of the holder 8.

The explosion proof camera includes a positioning cap 73. The positioning cap 73 is fixed to the bottom wall 81, which facilitates assembly, and at the same time, avoids the need to open holes in the retaining wall 13 as much as possible, so as not to impair the explosion-proof function of the explosion-proof housing 1. The positioning cap 73 and the bottom wall 81 may be fixed by means of a snap or screw locking.

The holder 8 includes a columnar portion 83 extending from the bottom wall 81. The columnar portion 83 is located in the space surrounded by the positioning cap 73. The jack 71 includes a fixing portion 711, a butt portion 712 extending from the fixing portion 711, and an extension portion 713. The bottom wall 81 is provided with a first through hole 811 and a second through hole 812. The end of the ejector pin 63 is inserted into the first through hole 811 to be located in the accommodating space 821 so as to be in contact with the contact piece of the battery 4, and the end of the ejector pin 71 is inserted into the second through hole 812 to be located in the accommodating space 821 so as to be abutted against the battery 4.

The extension portion 713 is surrounded to the outer periphery of the fixing portion 711, the columnar portion 83 is surrounded to the outer periphery of the extension portion 713, the abutment portion 712 abuts against the battery 4 after passing through the second through hole 812, one end of the elastic member 72 is sleeved to the fixing portion 711, and the other end abuts against the positioning cap 73.

The elastic member 72 may be fixed to the fixing portion 711, for example, the fixing portion 711 is provided with ribs to fix the elastic member 72; or may only abut against the extension 713; the elastic member 72 may be fixed to the positioning cap 73 and also abut only the positioning cap 73.

The diameter of the abutment portion 712 is smaller than that of the second through hole 812, and the diameter of the outer ring of the extension portion 713 is larger than that of the second through hole 812, so as to prevent the ejector pin 71 from penetrating out of the second through hole 812, thereby increasing the stability of the ejector pin 71.

The columnar portion 83 is provided to increase the stability of the jack 71 and the smoothness of movement; the provision of the extension 713 increases the stability of the elastic member 72.

Referring to fig. 10, 11, 12 and 13, the second cavity 12 is provided with a first fastening portion 84. The battery 4 includes a second holder 41. During the process of taking out the battery 4 from the second cavity 12, the first latching portion 84 latches with the second latching portion 41 to prevent the battery 4 from moving to the outside of the second cavity 12, and pulls the battery 4 so that the second latching portion 41 passes over the first latching portion 84 to take out the battery 4.

The first fastening portion 84 and the second fastening portion 41 are provided to prevent the battery 4 from flying out of the second cavity 12 due to the pushing force of the push rod 71 when the second cover 52 is opened, so as to protect the battery 4.

The first latching portion 84 is elastically deformed by force, so that the second latching portion 41 passes over the first latching portion 84 to facilitate pulling out and pushing in the battery 4.

The second latching portion 41 is provided with a guiding inclined surface 411, and when the battery 4 is assembled, the first latching portion 84 moves along the guiding inclined surface 411 until the second latching portion 41 passes over the first latching portion 84, so as to facilitate pulling out and pushing in the battery 4.

Optionally, the first fastening portion 84 is disposed on the fixing frame 8 and extends from the side wall 82 of the fixing frame 8. In the case where the fixing frame 8 is not provided, the first fastening portion 84 may be provided to the explosion-proof housing 1.

Alternatively, the number of the first latching portions 84 may be plural, and correspondingly, the number of the second latching portions 41 may be plural, so as to increase the balance of the stress of the battery 4.

Optionally, the first fastening portion 84 and the second fastening portion 41 are disposed in a pair, and are respectively disposed on two opposite sides of the battery 4, so that the stress is balanced when the battery 4 is assembled and disassembled, and smoothness when the battery 4 is assembled and disassembled is ensured.

A positioning column 85 extending towards the opening direction of the second cavity 12 is arranged in the second cavity, and the battery 4 is provided with a positioning hole 42. When the battery 4 is assembled into the second cavity 12 from the opening, the positioning posts 85 are inserted into the positioning holes 42 to increase the stability of the battery 4; at the same time, the battery 4 is prevented from being in contact with the thimble 63.

Referring to fig. 14, 15 and 16, the explosion-proof housing 1 is provided with a first buckle 15, one end of the second cover plate 52 is rotatably connected with the explosion-proof housing 1, the opposite end is provided with a second buckle 521, and the first buckle 15 is fixedly buckled with the second buckle 521. The second cover plate 52 is fixed with the explosion-proof housing 1 by a buckle, so that the second cover plate 52 is conveniently opened and closed, and the battery 4 is conveniently replaced; meanwhile, when the second cover plate 52 is opened, the second cover plate 52 can be prevented from falling down, so that the second cover plate 52 is prevented from being lost, and the efficiency of opening and closing the second cover plate 52 can be improved.

Optionally, the second cover 52 may be removed after being opened, for example, the second cover 52 and the explosion-proof housing 1 may be fixed by screwing or a plurality of snap fasteners.

The second cover plate 52 is provided with a buffer member 53. After the second cover plate 52 is assembled to the explosion-proof housing 1, the buffer member 53 compresses the battery 4, so as to ensure the contact stability between the battery 4 and the thimble 63.

The battery 4 further comprises a handle 43 to facilitate access to the battery 4.

Referring to fig. 1, 2 and 3, the explosion-proof camera includes a lens window 54 and a light compensating window 55 disposed on the first cover plate 51, and a light compensating lamp 9 disposed in the first cavity 11. The lens window 54 is located in front of the lens assembly 2, the light supplementing window 55 is located in front of the light supplementing lamp 9, the light supplementing window 55 is located below the lens window 54, and the main board 3 is located behind the lens assembly 2. The lens window 54 includes a first polarizer (not shown), and the light-compensating window 55 includes a second polarizer (not shown), and the polarization directions of the first polarizer and the second polarizer are perpendicular to each other. The light emitted by the light supplementing lamp 9 passes through the second polarizer to generate polarized light, the polarized light is beaten on the light supplementing window 55 to generate specular reflection, and the reflected light enters the first polarizer to be extinction, so that the reflection problem caused by the specular reflection is eliminated.

Optionally, the lens assembly 2, the lens window 54, the light compensating window 55 and the light compensating lamp 9 are fixed to the first cover plate 51. The lens assembly 2 and the light compensating lamp 9 may also be fixed to the explosion-proof housing 1.

The first cover plate 51 and the second cover plate 52 are located at two ends of the explosion-proof housing 1 in the length direction. The explosion proof camera includes a third cover plate 56. The explosion proof housing 1 is provided with a window 16 communicating with the first chamber 11. The third cap plate 56 is assembled to one end of the explosion proof housing 1 in the width direction to seal the window 16. The third cover 56 is switchable between an open state and a closed state.

Optionally, the third cover plate 56 and the explosion-proof housing 1 are sealed by a gasket, and the gasket may be fixed to the third cover plate 56 or may be fixed to the explosion-proof housing 1.

The explosion proof camera comprises an external device connected to the main board 3. After the third cover plate 56 is opened, the peripheral is exposed, and after the third cover plate 56 is closed, the peripheral is shielded. The peripheral devices include, but are not limited to, a switch, a debug interface, a card insertion hole, a charging interface, and a data transmission interface.

The third cover 56 and the explosion-proof housing 1 may be fixed by fastening or locking with screws. Alternatively, one end of the third cover 56 is connected to the explosion-proof housing 1, and the other end is fixed to the explosion-proof housing 1, so as to prevent the third cover 56 from falling from the explosion-proof housing 1 to cause damage when being opened. For example, the third cover 56 may be inserted into the assembly hole of the explosion-proof housing 1 through a falling-preventing string, so as to connect the third cover 56 with the explosion-proof housing 1.

The present application is not limited to the above-mentioned embodiments, but is not limited to the above-mentioned embodiments, and any person skilled in the art can make some changes or modifications to the above-mentioned embodiments without departing from the scope of the present application.

Claims

1. The utility model provides an explosion-proof camera, its characterized in that includes explosion-proof housing, camera lens subassembly, mainboard, battery, first apron and second apron, first apron with explosion-proof housing encloses into first cavity, the second apron with explosion-proof housing encloses into the second cavity, explosion-proof housing includes separates first cavity with the barricade of second cavity, first apron equipment to explosion-proof housing is in order to seal first cavity, second apron detachably equipment to explosion-proof housing is in order to seal the second cavity, camera lens subassembly is located in the first cavity, battery detachably equipment to in the second cavity, the mainboard is located first cavity or in the second cavity, camera lens subassembly and battery with the mainboard electricity is connected.

2. The explosion-proof camera of claim 1, wherein the main board is located in the first cavity, the explosion-proof camera comprises a connecting wire and a circuit board, the circuit board is located in the second cavity, the battery is electrically connected with the circuit board, the connecting wire connects the main board and the circuit board, the retaining wall is provided with a through hole for the connecting wire to pass through, the explosion-proof camera comprises a first sealing member, and the first sealing member seals the through hole.

3. The explosion proof camera of claim 2, wherein the explosion proof camera comprises an elastic stress relief secured to the connection line, the retaining wall comprises an internal thread located within the through hole, the elastic stress relief comprises an external thread threaded with the internal thread, and the first seal is a potting compound disposed between the through hole and the elastic stress relief.

4. The explosion-proof camera according to claim 2, wherein a positioning column extending toward an opening direction of the second cavity is provided in the second cavity, the battery is provided with a positioning hole, and the positioning column is inserted into the positioning hole when the battery is assembled into the second cavity from the opening.

5. The explosion-proof camera of claim 2, wherein the explosion-proof camera comprises a push rod positioned in the second cavity, an elastic piece and a push rod electrically connected with the circuit board, wherein the push rod and the push rod face the opening of the second cavity, one end of the push rod is abutted with the elastic piece, the other opposite end of the push rod is used for being abutted with the battery, when the battery is assembled into the second cavity from the opening and the second cover plate is covered on the explosion-proof shell, a contact piece of the battery is electrically contacted with the push rod, the push rod is extruded by the extrusion force of the battery to extrude the elastic piece, and when the second cover plate is opened, the pushing force of the elastic piece pushes against the push rod to push the battery so that the contact piece is separated from contact with the push rod.

6. The explosion-proof camera according to claim 5, wherein a first buckling part is arranged in the second cavity, the battery comprises a second buckling part, the first buckling part and the second buckling part buckle in the process of taking out the battery from the second cavity so as to prevent the battery from moving to the outer side of the second cavity, and the battery is pulled so that the second buckling part passes over the first buckling part to take out the battery.

7. The explosion proof camera of claim 6, wherein the first latching portion is resiliently deformable under force such that the second latching portion passes over the first latching portion.

8. The explosion-proof camera according to claim 7, wherein the second latching portion is provided with a guide slope along which the first latching portion moves until the second latching portion passes over the first latching portion when the battery is assembled.

9. The explosion-proof camera of claim 6, wherein the explosion-proof camera comprises a fixing frame accommodated in the second cavity, the fixing frame comprises a bottom wall and a side wall extending from the bottom wall, the bottom wall and the side wall enclose an accommodating space, the battery is assembled in the accommodating space, the bottom wall and the main board are respectively fixed to two opposite sides of the retaining wall, the circuit board is fixed to the bottom wall and is positioned between the bottom wall and the retaining wall, the bottom wall is provided with a first through hole and a second through hole, the end part of the ejector pin penetrates out of the first through hole to be positioned in the accommodating space, the end part of the ejector pin penetrates out of the second through hole to be positioned in the accommodating space, and the first buckling part extends from the side wall to be formed.

10. The explosion-proof camera according to claim 9, wherein the explosion-proof camera comprises a positioning cap fixed to the bottom wall, the fixing frame comprises a columnar portion extending from the bottom wall, the columnar portion is located in a space surrounded by the positioning cap, the ejector rod comprises a fixing portion, an abutting portion and an extending portion, the abutting portion extends from the fixing portion, the extending portion surrounds the periphery of the fixing portion, the columnar portion surrounds the periphery of the extending portion, an end portion of the abutting portion penetrates through the second through hole and is located in the accommodating space, one end of the elastic piece is sleeved to the fixing portion, and the other end of the elastic piece abuts against the positioning cap.

11. The explosion-proof camera of claim 1, wherein the explosion-proof housing is provided with a first buckle, one end of the second cover plate is rotatably connected with the explosion-proof housing, the opposite end is provided with a second buckle, and the first buckle is fixedly buckled with the second buckle.

12. The explosion-proof camera of claim 1, wherein the explosion-proof camera comprises a lens window and a light supplementing window which are arranged on the first cover plate, the lens window comprises a first polaroid, the light supplementing window comprises a second polarized lens, and the polarization directions of the first polarized lens and the second polarized lens are mutually perpendicular.

13. The explosion-proof camera according to any one of claims 1 to 12, wherein the first cover plate and the second cover plate are located at both ends of the explosion-proof housing in a length direction, the explosion-proof camera includes a third cover plate provided with a window communicating with the first cavity, the third cover plate is assembled to one end of the explosion-proof housing in a width direction to seal the window, and the third cover plate is switchable between an open state and a closed state.