Explosion-proof camera

Abstract

The utility model relates to the technical field of camera equipment, and discloses an explosion-proof camera, which comprises a main body, a camera lens and a camera lens, the lens is arranged on the main body; the explosion-proof cover is fixedly connected to the main body and covers the lens; and the shading piece sleeves the periphery of the lens, and the end part of the shading piece protrudes out of the lens and abuts against the inner wall of the explosion-proof cover. Through the above mode, the explosion-proof camera provided by the utility model can prevent the reflection light generated by the explosion-proof cover from influencing the lens as much as possible, and improves the imaging quality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of camera equipment, in particular to an explosion-proof camera. BACKGROUND

[0002] Due to the requirements of the application scene, the explosion-proof camera usually covers the lens with an explosion-proof cover with high structural strength at least on the outside to protect the lens from explosion.

[0003] In the existing explosion-proof camera, there is a certain gap between the lens and the inner wall of the explosion-proof cover. Since the explosion-proof cover will produce a reflection phenomenon under light conditions, a large amount of light will be reflected into the lens, affecting the imaging effect of the lens. CONTENT OF THE UTILITY MODEL

[0004] In view of the above problems, the present application provides an explosion-proof camera which can avoid the influence of the reflection of the explosion-proof cover on the lens as much as possible and improve the imaging quality.

[0005] The present application provides an explosion-proof camera, comprising: a main body; a lens arranged on the main body; an explosion-proof cover fixedly connected to the main body and covering the lens; and a light shielding piece sleeved on the outer periphery of the lens, the end of the light shielding piece protruding from the lens and abutting against the inner wall of the explosion-proof cover.

[0006] In an optional manner, the end of the light shielding piece is provided with a flexible pad layer, and the light shielding piece abuts against the inner wall of the explosion-proof cover through the flexible pad layer.

[0007] In an optional manner, the light shielding piece is telescopically connected to the main body, and an elastic piece is connected between the light shielding piece and the main body, the elastic piece being used to provide the light shielding piece with an elastic force extending towards the explosion-proof cover.

[0008] In an optional manner, an opening is arranged on the main body, a limiting buckle is arranged on the light shielding piece, the limiting buckle is clamped in the opening, and the limiting buckle is used to limit the maximum extension distance of the light shielding piece by abutting against the inner wall of the main body around the opening.

[0009] In an optional manner, a guide notch is arranged at the edge of the opening, and a guide column is arranged on the outer periphery of the light shielding piece, the guide column being telescopically arranged in the guide notch.

[0010] In an optional manner, the limiting buckle and the guide column are arranged around the light shielding piece, wherein the two sides of each limiting buckle are guide columns, and the two sides of each guide column are limiting buckles.

[0011] In an alternative, the outer periphery of the end of the light shielding member is provided with an abutting portion, the first limiting slot is arranged on the side of the abutting portion facing the main body, the second limiting slot is arranged on the outer wall of the main body around the opening, and the two ends of the elastic member are respectively limited to abut in the first limiting slot and the second limiting slot.

[0012] In an alternative, a dismounting opening is arranged on the abutting portion opposite to the limiting buckle, the dismounting opening is used for the tool to extend into and press the limiting buckle, so that the light shielding member is separated from the main body.

[0013] In an alternative, the inner wall of the explosion-proof cover is arc-shaped, and the end of the light shielding member is arc-shaped and adapted to the arc of the inner wall of the explosion-proof cover.

[0014] In an alternative, the main body comprises a fixed part and a movable part, the fixed part comprises a first housing and a mounting seat, the movable part comprises a second housing and a support, the mounting seat is fixed in the first housing, the support is rotatably arranged on the mounting seat, the lens is at least partially arranged in the second housing, the light shielding member is connected to the second housing, the first housing is provided with a movable opening, the second housing at least partially extends into the movable opening and is rotatably connected with the support, and the explosion-proof cover is connected to the first housing and covers the outer periphery of the second housing.

[0015] In the explosion-proof camera provided by the embodiments of the present application, the light shielding member is sleeved on the outer periphery of the lens and the end of the lens protruding from the lens abuts against the inner wall of the explosion-proof cover, the light shielding member separates a view channel between the lens and the inner wall opposite to the lens on the explosion-proof cover, external light enters the lens through the view channel, and the camera shooting function is realized. When the sunlight, external light or light emitted by the camera itself (if any) is reflected on the inner wall of the explosion-proof cover outside the view channel, the light shielding member blocks the light reflected towards the lens outside the view channel, thereby avoiding overexposure and ensuring the imaging quality of the lens and the clarity of the camera shooting picture. BRIEF DESCRIPTION OF DRAWINGS

[0016] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The detailed description is made with reference to the accompanying drawings.

[0017] Figure 1 FIG. 1 is a perspective view of an explosion-proof camera provided by an embodiment of the present application;

[0018] Figure 2 FIG. 4 is a structural view of the explosion-proof cover of the explosion-proof camera provided by an embodiment of the present application in an explosion state;

[0019] Figure 3A cross-sectional view of the explosion-proof camera provided for the embodiment of the present application;

[0020] Figure 4 For Figure 3 An enlarged view at A;

[0021] Figure 5 A structure diagram of the explosion-proof cover and the flexible pad layer in the explosion-proof camera provided for the embodiment of the present application in an explosion state;

[0022] Figure 6 A structure diagram of the light-shielding assembly in the explosion-proof camera provided for the embodiment of the present application in an explosion state in one perspective view;

[0023] Figure 7 A structure diagram of the light-shielding assembly in the explosion-proof camera provided for the embodiment of the present application in an explosion state in another perspective view;

[0024] Figure 8 A perspective view of the light-shielding piece in the explosion-proof camera provided for the embodiment of the present application;

[0025] Figure 9 A structure diagram of the explosion-proof camera provided for the embodiment of the present application in an explosion state.

[0026] The reference signs in the detailed description are as follows:

[0027] 100, explosion-proof camera;

[0028] 110, main body; 1101, fixed part; 1102, movable part; 111, opening; 112, guide notch; 113, second limiting groove; 114, first shell; 1141, movable opening; 115, mounting seat; 116, second shell; 117, bracket;

[0029] 120, lens; 130, explosion-proof cover;

[0030] 140, light-shielding piece; 141, view channel; 142, flexible pad layer; 143, elastic piece; 144, limiting buckle; 145, guide column; 146, first limiting groove; 147, abutting portion; 148, dismounting opening;

[0031] 150, light supplement lamp. DETAILED DESCRIPTION

[0032] The embodiments of the technical solutions of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0033] In some special and dangerous environments, such as oil and gas industry, coal mine, chemical industry, fire fighting field, aviation field, etc., in order to ensure the normal work of the camera, it is necessary to ensure that the camera has certain explosion-proof performance.

[0034] As a relatively fragile component in the camera, in order to prevent the lens from being damaged, an explosion-proof cover is needed to cover the outside of the lens for explosion-proof protection in the explosion-proof camera. The explosion-proof cover is generally made of transparent material with high structural strength. When working, the explosion-proof cover may produce a reflection phenomenon. If the light is reflected too much into the lens, it will cause excessive exposure of the lens imaging, resulting in a decline in imaging quality.

[0035] Therefore, in order to avoid the reflection of the explosion-proof cover from having a greater impact on the lens, the area between the lens and the inner wall of the explosion-proof cover is shaded in the present application to block the light reflected by the explosion-proof cover from the lens, ensuring that the lens can normally image.

[0036] First, please refer to Figure 1 and Figure 2 , which respectively show the overall structure of the explosion-proof camera provided by the embodiments of the present application and the structure of the explosion-proof cover in an explosion state. The explosion-proof camera 100 comprises a main body 110, a lens 120, an explosion-proof cover 130 and a shading piece 140. Among them, the lens 120 is arranged on the main body 110, the explosion-proof cover 130 can be made of transparent material to ensure that the lens 120 can collect images through the explosion-proof cover 130, and the explosion-proof cover 130 is connected to the main body 110 and covers the lens 120.

[0037] Regarding the shading of the shading piece 140 to the lens 120, please further refer to the cross-sectional structure shown in Figure 3 and the enlarged structure at A in Figure 4 . Figure 3 The shading piece 140 is sleeved on the outer periphery of the lens 120, and the end of the shading piece 140 protrudes from the lens 120 and abuts against the inner wall of the explosion-proof cover 130.

[0038] In the specific embodiment shown in Figure 2 , a fill light 150 is arranged on the main body 110 at the position of the outer periphery of the shading piece 140. The fill light 150 can be arranged only one, of course, a plurality of fill lights can be arranged at intervals along a circle. In a relatively dark environment, the fill light 150 can be used to supplement light to the environment to improve the brightness of the imaging. After the light emitted by the fill light 150 reaches the inner wall of the explosion-proof cover 130, part of the light will be reflected towards the lens 120, and the shading piece 140 can block these light reflected towards the lens 120 to prevent it from entering the lens 120 to form excessive exposure and affect the imaging quality.

[0039] Similarly, when the explosion-proof cover 130 is Figure 2When the half-spherical explosion-proof cover 130 is in the half-spherical state, the natural light or the light from the outside can pass through the explosion-proof cover 130 from the rear side of the explosion-proof cover 130 to the inside of the explosion-proof cover 130, and then can reach the inner wall of the explosion-proof cover 130. The light reaching the inner wall of the explosion-proof cover 130 can also be reflected towards the lens 120, and the light blocking member 140 can block the light to prevent the light from entering the lens 120.

[0040] In addition, for the embodiment shown in Figure 2 The surface of the end of the light blocking member 140 abutting against the inner wall of the explosion-proof cover 130 can be provided as an arc surface matching the curvature of the inner wall of the explosion-proof cover 130, so as to better fit the inner wall of the explosion-proof cover 130 and achieve a better light blocking effect.

[0041] In summary, in the explosion-proof camera 100, the light blocking member 140 is sleeved on the outer periphery of the lens 120 and the end of the light blocking member 140 protruding from the lens 120 abuts against the inner wall of the explosion-proof cover 130. The light blocking member 140 separates a view channel 141 (as shown in Figure 4 The light from the outside enters the lens 120 through the view channel 141 to achieve the camera shooting function. When the sunlight, the light from the outside or the light emitted by the light supplement of the camera (if any) is reflected on the inner wall of the explosion-proof cover 130 outside the view channel 141, the light blocking member 140 blocks the light reflected towards the lens 120 outside the view channel 141, so as to avoid the problem of overexposure and ensure the imaging quality of the lens 120 and the clarity of the camera shooting picture.

[0042] In order to block the light more sufficiently, please continue to refer to Figure 4 , and further refer to Figure 5 , Figure 5 The structure of the explosion-proof state of the light blocking member 140 is shown. The end of the light blocking member 140 is provided with a flexible pad layer 142, and the light blocking member 140 abuts against the inner wall of the explosion-proof cover 130 through the flexible pad layer 142. Specifically, the flexible pad layer 142 can be foam, silica gel pad, rubber pad, etc. In order to ensure the accuracy of the position of the flexible pad layer 142, the flexible pad layer 142 can be fixed on the light blocking member 140 by means of gluing, etc.

[0043] After the flexible pad layer 142 is clamped between the light blocking member 140 and the inner wall of the explosion-proof cover 130, the flexible pad layer 142 can be deformed to make the surface of the light blocking member 140 and the inner wall of the explosion-proof cover 130 more closely fit together, so as to better isolate the internal space of the view channel 141 from other spaces in the explosion-proof cover 130, thereby preventing the light reflected on the inner wall of the explosion-proof cover 130 from entering the view channel 141 through the narrow gap between the light blocking member 140 and the inner wall of the explosion-proof cover 130.

[0044] Considering that the flexible pad 142 is in a compressed state for a long time, it is prone to fatigue and aging, which will reduce its resilience or even prevent it from rebounding. This will cause gaps between the flexible pad 142 and the inner wall of the explosion-proof cover 130, resulting in light leakage.

[0045] To ensure that the flexible pad 142 can still fit tightly against the inner wall of the explosion-proof cover 130 after long-term use, such as... Figure 4 As shown, the light-shielding member 140 can also be telescopically connected to the main body 110. An elastic member 143 is connected between the light-shielding member 140 and the main body 110. The elastic member 143 is used to provide the light-shielding member 140 with an elastic force extending in the direction shown by arrow M in the figure, that is, an elastic force extending towards the explosion-proof cover 130. The elastic member 143 can be made of... Figure 4 The compression spring shown can also be made of a spring sheet, an elastic soft rubber block, etc.

[0046] Under the elastic force of the elastic member 143, the flexible pad 142 is always in a compressed state between the light-shielding member 140 and the inner wall of the explosion-proof cover 130. When the flexible pad 142 experiences fatigue aging, the elastic force applied to the light-shielding member 140 by the elastic member 143 can further compress the flexible pad 142, ensuring that the flexible pad 142 can still fit tightly against the inner wall of the explosion-proof cover 130 after long-term use. Thus, with the cooperation of the light-shielding member 140 and the flexible pad 142, a good light-shielding effect is always achieved.

[0047] Of course, in some other embodiments, the flexible pad 142 may not be provided. Instead, the light-shielding member 140 may be telescopically connected to the main body 110 and the elastic member 143 may provide the extension force. This arrangement can ensure that positive pressure is generated between the light-shielding member 140 and the inner wall of the explosion-proof cover 130, forming an interference fit, so that the surface of the light-shielding member 140 fits more tightly with the inner wall of the explosion-proof cover 130, ensuring that the light-shielding member 140 has a better light-shielding ability.

[0048] Regarding the retractable assembly between the light-shielding member 140 and the main body 110, this application proposes a specific implementation scheme, please refer to [link / reference needed]. Figure 6, the explosion state of the light shielding piece 140 and the main body 110 is shown, the main body 110 is provided with an opening 111, and the lens 120 can be arranged in the opening 111. The light shielding piece 140 is provided with a limiting buckle 144, and during assembly, the limiting buckle 144 can be extruded and clamped into the opening 111 through deformation. After clamping, the limiting buckle 144 abuts against the inner wall of the opening 111 around the opening 111, so as to limit the maximum extension distance of the light shielding piece 140, and prevent damage of the light shielding piece 140 caused by falling off from the main body 110 due to elastic force of the elastic piece 143 when the outer end of the light shielding piece 140 is not limited by the explosion-proof cover 130.

[0049] In order to more reliably limit the maximum extension distance of the light shielding piece 140, the limiting buckle 144 can be arranged in multiple numbers around the light shielding piece 140, so as to limit the extension of the light shielding piece 140 from multiple points by abutting against the inner walls of different positions around the opening 111, and ensure the stability of the limiting.

[0050] In order to prevent the light shielding piece 140 from rotating and causing abrasion of the lens 120, please continue to refer to Figure 6 , and further combine Figure 7 , the edge of the opening 111 can be provided with a guide notch 112, and the outer periphery of the light shielding piece 140 is provided with a guide column 145 which can be telescopically arranged in the guide notch 112.

[0051] In the embodiment, the guide column 145 on the light shielding piece 140 and the guide notch 112 of the edge of the opening 111 are telescopically and slidably matched, which can guide the extension of the light shielding piece 140 on one hand, and on the other hand, the abutment of the guide column 145 on both sides and the inner wall of the guide notch 112 can also limit the rotation of the light shielding piece 140, so as to prevent the light shielding piece 140 from rotating and rubbing against the lens 120 located in the inner periphery of the light shielding piece 140, and avoid abrasion of the lens 120 and other problems.

[0052] In Figure 6 and Figure 7In the specific embodiment shown, the light shielding piece 140 is provided with three limiting buckles 144 and three guide columns 145 around the periphery, and the edge of the opening 111 is provided with three guide notches 112 corresponding to the three guide columns 145. The three limiting buckles 144 and the three guide columns 145 are arranged in interpenetration, that is, each limiting buckle 144 has two guide columns 145 on both sides, and each guide column 145 has two limiting buckles 144 on both sides. This arrangement can simultaneously achieve the effects of limiting the maximum extension distance, guiding the extension, and limiting the rotation. Of course, this is only an example, and in other embodiments, the limiting buckles 144 and the guide columns 145 can also be arranged in other numbers and other arrangements.

[0053] In order to enable the elastic member 143 to better provide elastic force to the light shielding piece 140, as shown in Figure 7 , the outer periphery of the end of the light shielding piece 140 is formed with an abutting portion 147, and the first limiting groove 146 is provided on the side of the abutting portion 147 facing the main body 110, as shown in Figure 6 , the second limiting groove 113 is provided on the outer wall of the main body 110 around the opening 111. Please refer to Figure 4 , Figure 6 and Figure 7 , the two ends of the elastic member 143 are respectively abutted in the first limiting groove 146 and the second limiting groove 113, and the two ends of the elastic member 143 are respectively abutted with the groove bottoms of the first limiting groove 146 and the second limiting groove 113 to provide elastic force for the extension of the light shielding piece 140. The side walls of the first limiting groove 146 and the second limiting groove 113 can respectively limit the movement of the two ends of the elastic member 143 to ensure the accuracy of the position of the elastic member 143, thereby ensuring that the elastic member 143 can provide accurate extension elastic force to the light shielding piece 140, so that the end of the light shielding piece 140 can be fully abutted on the inner wall of the explosion-proof cover 130 to achieve a good light shielding effect.

[0054] Further, on the basis of providing the abutting portion 147 at the end of the light shielding piece 140 and providing the first limiting groove 146 on the abutting portion 147 to limit the elastic member 143, in order to facilitate the disassembly of the light shielding piece 140, an embodiment is proposed, please refer to Figure 9 , which shows the structure of the light shielding piece 140. As shown in the figure, a disassembly opening 148 is provided on the abutting portion 147 opposite to the limiting buckle 144, and the disassembly opening 148 can be used for a disassembly tool (such as a screwdriver, a pressing rod, a pressing plate, etc.) to press the limiting buckle 144 after being inserted, so that the limiting buckle 144 is disengaged from the inner wall around the opening 111, thereby separating the light shielding piece 140 from the main body 110, achieving the convenient disassembly of the light shielding piece 140 from the main body 110, and facilitating the maintenance and replacement of the light shielding piece 140 in the later stage.

[0055] In view of the fact that the lens 120 in the explosion-proof camera 100 needs to have certain activity to achieve monitoring of a wider range in the field of security monitoring and the like, the present application also makes corresponding design for the activity of the lens 120, which will be described in detail with reference to Figure 2 , and further in combination with Figure 9 , the structure of the explosion-proof camera 100 as a whole in the explosion state is shown in the figure, the main body 110 includes a fixed part 1101 and a movable part 1102, the fixed part 1101 includes a first housing 114 and a mounting seat 115, and the movable part 1102 includes a second housing 116 and a bracket 117. The mounting seat 115 is fixed in the first housing 114, and the bracket 117 is rotatably arranged on the mounting seat 115, and the rotation axis of the bracket 117 relative to the mounting seat 115 is Figure 9 the dotted line L1. The lens 120 is at least partially arranged in the second housing 116, and the light shielding member 140 is connected to the second housing 116. The first housing 114 is provided with a movable opening 1141, and the second housing 116 at least partially extends into the movable opening 1141 and is rotatably connected with the bracket 117, and the rotation axis of the second housing 116 relative to the bracket 117 is Figure 9 the dotted line L2. The explosion-proof cover 130 is connected to the first housing 114, and covers the outer periphery of the second housing 116, so as to play a role in explosion-proof protection of the internal lens 120 and other components.

[0056] Among them, the dotted line L2 and the dotted line L1 can be arranged perpendicularly, so that in the ceiling mounting scene shown in Figure 9 , when the bracket 117 drives the second housing 116 to rotate relative to the mounting seat 115, the azimuth angle of the lens 120 can be adjusted, that is, the orientation of the lens 120 in the horizontal direction is adjusted, and when the second housing 116 rotates relative to the bracket 117, the pitch angle of the lens 120 can be adjusted, that is, the included angle between the lens 120 and the horizontal plane is adjusted, and then through the cooperation of the two-axis perpendicular rotation mechanisms, the orientation of the lens 120 is adjusted in all directions.

[0057] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way.

Claims

1. An explosion-proof video camera (100), characterized by, The utility model relates to a camera lens protection device, which comprises: a main body (110); a lens (120) arranged on the main body (110); an explosion-proof cover (130) connected to the main body (110) and covering the lens (120); a light shield (140) sleeved on the outer periphery of the lens (120), the end of the light shield (140) protruding from the lens (120) and abutting against the inner wall of the explosion-proof cover (130); the light shield (140) is telescopically connected to the main body (110), and an elastic member (143) is connected between the light shield (140) and the main body (110), the elastic member (143) being used for providing the light shield (140) with an elastic force for stretching out towards the explosion-proof cover (130).

2. The explosion-proof video camera (100) according to claim 1, characterized in that The end of the light shield (140) is provided with a flexible pad (142), and the light shield (140) abuts against the inner wall of the explosion-proof cover (130) through the flexible pad (142).

3. The explosion-proof video camera (100) according to claim 1, characterized in that The main body (110) is provided with an opening (111), and the light shield (140) is provided with a limiting buckle (144) which is clamped in the opening (111) and is used for limiting the maximum stretching distance of the light shield (140) by abutting against the inner wall of the main body (110) around the opening (111).

4. The explosion-proof video camera (100) according to claim 3, characterized in that The edge of the opening (111) is provided with a guide notch (112), and the outer periphery of the light shield (140) is provided with a guide column (145) which can telescopically pass through the guide notch (112).

5. The explosion-proof video camera (100) according to claim 4, characterized in that The limiting buckle (144) and the guide column (145) are arranged around the light shield (140), wherein the two sides of each limiting buckle (144) are the guide columns (145), and the two sides of each guide column (145) are the limiting buckles (144).

6. The explosion-proof video camera (100) according to claim 3, characterized in that The outer periphery of the end of the light shield (140) is protruded to form an abutting portion (147), the abutting portion (147) is provided with a first limiting groove (146) on the side facing the main body (110), the outer wall of the main body (110) around the opening (111) is provided with a second limiting groove (113), and the two ends of the elastic member (143) are respectively limitedly abutted in the first limiting groove (146) and the second limiting groove (113).

7. The explosion-proof video camera (100) according to claim 6, characterized in that A dismounting opening (148) is arranged on the abutting portion (147) opposite to the limiting buckle (144), the dismounting opening (148) is used for tools to stretch in and press the limiting buckle (144) so as to separate the light shield (140) from the main body (110).

8. The explosion-proof video camera (100) of claim 1, wherein, The inner wall of the explosion-proof cover (130) is an arc surface, and the surface of the end of the light shield (140) is an arc surface which is matched with the curvature of the inner wall of the explosion-proof cover (130).

9. The explosion-proof video camera (100) according to claim 1, characterized in that The main body (110) comprises a fixed part (1101) and a movable part (1102), the fixed part (1101) comprises a first shell (114) and a mounting seat (115), the movable part (1102) comprises a second shell (116) and a support (117); The mounting seat (115) is fixed in the first shell (114), and the support (117) is rotatably arranged on the mounting seat (115); The lens (120) is at least partially arranged in the second shell (116), and the light shielding piece (140) is connected to the second shell (116); An activity opening (1141) is formed in the first shell (114), and the second shell (116) at least partially extends into the activity opening (1141) and is rotatably connected with the support (117); The explosion-proof cover (130) is connected to the first shell (114) and covers the outer periphery of the second shell (116).

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