Anti-overexposure device for camera

Abstract

The utility model discloses an anti-overexposure device for a camera, and particularly relates to the technical field of camera anti-overexposure, comprising a side plate, one side of the side plate is fixedly communicated with a sleeve, one side of the sleeve far away from the side plate is fixedly communicated with an installation sleeve, one side of the installation sleeve far away from the sleeve is movably provided with an anti-overexposure assembly, and the sleeve is provided with a fixing assembly. The fixing assembly comprises an air bag, a first air pipe, a first valve and a second air pipe, the air bag is fixedly installed in the sleeve, the bottom end of the first air pipe fixedly communicates with the air bag, and the top end of the first air pipe fixedly communicates with the first valve. External air enters the air bag through the second air pipe and the first air pipe, the air bag is inflated to expand so as to extrude the lens, then the overexposure prevention assembly and the lens are fixed, the first valve is closed so that air in the air bag cannot enter the second air pipe, the sleeve is detached in a similar way, operation is easy, and operation is convenient. And the anti-overexposure assembly can be conveniently overhauled and replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of overexposure prevention of cameras, and more specifically, to overexposure prevention equipment for cameras. Background Art

[0002] Camera overexposure prevention refers to avoiding the loss of bright details in the picture during photography or video recording to maintain the details and texture of the picture. The existing solutions have the following shortcomings and problems: they cannot effectively ensure that the video surveillance image can clearly see the face of the person, and after re-retrieving the video recording, they cannot provide decisive help for actual work.

[0003] The invention with publication number CN114283496A discloses an intelligent anti-face overexposure camera module. The utility model ensures better image quality in low light conditions, can effectively see the faces in the picture without overexposure, avoids the inability to see the faces clearly due to overexposure of brightness caused by camera image exposure and auxiliary lighting, and can also take into account video surveillance when no one is around, so as to achieve the best monitoring effect to meet the actual application needs in various occasions.

[0004] When the above-mentioned anti-overexposure device is in use, the selective exposure module, when it is determined that a person in a periodic motion state enters a designated area, chooses to expose the contour image of the person. However, the anti-overexposure components such as the detection module and the exposure module are integrated with the camera module, which makes it inconvenient to inspect and replace the anti-overexposure components. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides an overexposure prevention device for a camera, aiming to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-overexposure device for a camera, comprising a side plate, one side of the side plate is fixedly connected to a sleeve, the side of the sleeve away from the side plate is fixedly connected to a mounting sleeve, the side of the mounting sleeve away from the sleeve is movably provided with an anti-overexposure component, the sleeve is provided with a fixed component, the fixed component comprises an airbag, a first air pipe, a first valve and a second air pipe, the airbag is fixedly installed inside the sleeve, the bottom end of the first air pipe is fixedly connected to the airbag, and the top end of the first air pipe is fixedly connected to the first valve, and the bottom end of the second air pipe is fixedly connected to the first valve.

[0007] Furthermore, one end of the second air pipe away from the first valve is fixedly connected to a connecting air head.

[0008] Furthermore, the other side of the side plate is fixedly connected to a suction pad, and one side of the suction pad is fixedly connected to a fourth air pipe.

[0009] Furthermore, one end of the fourth air pipe away from the adsorption pad is fixedly connected to the second valve, the side of the second valve away from the fourth air pipe is fixedly connected to the third air pipe, and the other end of the third air pipe is fixedly connected to the second air pipe.

[0010] Furthermore, the fixing sleeve on the anti-overexposure component is provided with two external thread blocks, and one of the external thread blocks is threadedly connected to the mounting sleeve.

[0011] It can be seen that in the above technical solution, the anti-overexposure assembly is rotated and one of the external threaded blocks is moved away from the mounting sleeve, thereby releasing the fixation between the sleeve and the anti-overexposure assembly.

[0012] Furthermore, a connecting sleeve is threadedly connected to the other external thread block, and the connecting sleeve is in contact with the overexposure protection component.

[0013] It can be seen that in the above technical solution, another anti-overexposure component is inserted into the connecting sleeve, and the external thread block on the other anti-overexposure component is fixed to the connecting sleeve to connect the two anti-overexposure components.

[0014] Furthermore, a sealing gasket is movably provided inside the connecting sleeve, and the sealing gasket is in contact with the overexposure prevention component.

[0015] It can be seen that in the above technical solution, the sealing gasket improves the sealing between the two anti-overexposure components.

[0016] Furthermore, the anti-overexposure component is composed of a neutral density filter.

[0017] Technical effects and advantages of the utility model:

[0018] 1. The utility model inserts the lens of the camera into the sleeve, and the lens of the camera is located inside the airbag, and then one end of the air pump is connected to the connecting air head, and the external air enters the airbag through the second air pipe and the first air pipe. The airbag is inflated and expanded, thereby squeezing the lens, and then the anti-overexposure component is fixed to the lens, and the first valve is closed so that the gas in the airbag cannot enter the second air pipe. Similarly, the sleeve is disassembled, the operation is simple, and the anti-overexposure component is convenient for inspection and replacement;

[0019] 2. The utility model attaches the adsorption pad to the lens, closes the first valve and opens the second valve, then extracts the air in the adsorption pad, and the air in the adsorption pad enters the second air pipe through the fourth air pipe and the third air pipe, and is finally discharged through the connecting air head, so that the adsorption pad is adsorbed on the lens, further improving the firmness between the anti-overexposure component and the lens, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0021] Figure 1 This is a schematic diagram of the overall structure of an overexposure prevention device for a camera according to the utility model;

[0022] Figure 2 This is a schematic diagram of the assembly structure of a side plate and a mounting set of an overexposure prevention device for a camera according to the utility model;

[0023] Figure 3 This is a schematic diagram of the assembly structure of an overexposure prevention component and a connecting set of an overexposure prevention device for a camera according to the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of a fixing component of an overexposure prevention device for a camera according to the utility model;

[0025] In the figure: 1. side panel; 2. sleeve; 3. mounting sleeve; 4. fixing assembly; 5. anti-overexposure assembly; 6. external thread block; 7. connecting sleeve; 8. sealing gasket; 401. air bag; 402. first air pipe; 403. first valve; 404. second air pipe; 405. connecting air head; 406. third air pipe; 407. second valve; 408. fourth air pipe; 409. adsorption pad. DETAILED DESCRIPTION

[0026] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Refer to the instruction manual Figure 1-4The embodiment of the invention is an overexposure prevention device for a camera, comprising a side plate 1, a sleeve 2 is fixedly connected to one side of the side plate 1, a mounting sleeve 3 is fixedly connected to the side of the sleeve 2 away from the side plate 1, an overexposure prevention component 5 is movably provided on the side of the mounting sleeve 3 away from the sleeve 2, a fixing component 4 is provided on the sleeve 2, the fixing component 4 comprises an airbag 401, a first air pipe 402, a first valve 403 and a second air pipe 404, the airbag 401 is fixedly installed inside the sleeve 2, the bottom end of the first air pipe 402 is fixedly connected to the airbag 401, and the top end of the first air pipe 402 is fixedly connected to the first valve 403, the bottom end of the second air pipe 404 is fixedly connected to the first valve 403, and the overexposure prevention component 5 is composed of a neutral density filter.

[0028] Furthermore, one end of the second air pipe 404 away from the first valve 403 is fixedly connected to the connecting air head 405, the other side of the side panel 1 is fixedly connected to the adsorption pad 409, one side of the adsorption pad 409 is fixedly connected to the fourth air pipe 408, one end of the fourth air pipe 408 away from the adsorption pad 409 is fixedly connected to the second valve 407, the side of the second valve 407 away from the fourth air pipe 408 is fixedly connected to the third air pipe 406, and the other end of the third air pipe 406 is fixedly connected to the second air pipe 404.

[0029] Among them, the adsorption pad 409 is attached to the lens, the first valve 403 is closed and the second valve 407 is opened, and then the air in the adsorption pad 409 is extracted, and the air in the adsorption pad 409 enters the second air pipe 404 through the fourth air pipe 408 and the third air pipe 406, and is finally discharged through the connecting air head 405, so that the adsorption pad 409 is adsorbed on the lens, further improving the firmness between the anti-overexposure component 5 and the lens, and is easy to use.

[0030] Furthermore, the fixed sleeve on the anti-overexposure component 5 is provided with two external thread blocks 6, and one of the external thread blocks 6 is threadedly connected to the mounting sleeve 3, and the other external thread block 6 is threadedly connected to a connecting sleeve 7, and the connecting sleeve 7 is in contact with the anti-overexposure component 5, and a sealing gasket 8 is provided inside the connecting sleeve 7, and the sealing gasket 8 is in contact with the anti-overexposure component 5.

[0031] Furthermore, the anti-overexposure component 5 is rotated and one of the external threaded blocks 6 is moved away from the mounting sleeve 3, thereby releasing the fixation between the sleeve 2 and the anti-overexposure component 5, and the other anti-overexposure component 5 is inserted into the connecting sleeve 7, and the external threaded block 6 on the other anti-overexposure component 5 is fixed to the connecting sleeve 7, and the two anti-overexposure components 5 are connected, and the sealing gasket 8 improves the sealing between the two anti-overexposure components 5.

[0032] When in use, the anti-overexposure component 5 is an optical filter, and its function is to reduce the amount of light entering the camera lens, thereby reducing the overall exposure level. Its principle is to reduce the transmission of light through the neutral gray filter on the filter, so that the light entering the camera through the lens becomes darker. The camera lens is inserted into the sleeve 2, and the camera lens is located inside the airbag 401. Then one end of the inflation pump is connected to the connecting air head 405. External air enters the airbag 401 through the second air pipe 404 and the first air pipe 402. The airbag 401 is inflated and expanded, thereby squeezing the lens, and then the anti-overexposure component 5 is fixed to the lens. The first valve 403 is closed so that the gas in the airbag 401 cannot enter the second air pipe 404. Similarly, the sleeve 2 is disassembled, and the operation is simple, which is convenient for inspection and replacement of the anti-overexposure component 5.

[0033] The contents not described in detail in the specification belong to the prior art known to those skilled in the art. The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An overexposure prevention device for a camera, comprising a side plate (1), one side of the side plate (1) being fixedly connected to a sleeve (2), a side of the sleeve (2) away from the side plate (1) being fixedly connected to a mounting sleeve (3), and a side of the mounting sleeve (3) away from the sleeve (2) being movably provided with an overexposure prevention component (5), characterized in that: The sleeve (2) is provided with a fixing component (4), the fixing component (4) comprising an airbag (401), a first air pipe (402), a first valve (403) and a second air pipe (404), the airbag (401) being fixedly mounted inside the sleeve (2), the bottom end of the first air pipe (402) being fixedly connected to the airbag (401), the top end of the first air pipe (402) being fixedly connected to the first valve (403), and the bottom end of the second air pipe (404) being fixedly connected to the first valve (403).

2. The camera overexposure prevention device according to claim 1, characterized in that: One end of the second air pipe (404) away from the first valve (403) is fixedly connected to a connecting air head (405).

3. The camera overexposure prevention device according to claim 1, characterized in that: The other side of the side plate (1) is fixedly connected to an adsorption pad (409), and one side of the adsorption pad (409) is fixedly connected to a fourth air pipe (408).

4. The camera overexposure prevention device according to claim 3, characterized in that: One end of the fourth air pipe (408) away from the adsorption pad (409) is fixedly connected to the second valve (407), and the side of the second valve (407) away from the fourth air pipe (408) is fixedly connected to the third air pipe (406), and the other end of the third air pipe (406) is fixedly connected to the second air pipe (404).

5. The camera overexposure prevention device according to claim 1, characterized in that: The upper fixing sleeve of the overexposure prevention component (5) is provided with two external thread blocks (6), and one of the external thread blocks (6) is threadedly connected to the mounting sleeve (3).

6. The camera overexposure prevention device according to claim 5, characterized in that: A connecting sleeve (7) is threadedly connected to the other external thread block (6), and the connecting sleeve (7) is in contact with the overexposure prevention component (5).

7. The camera overexposure prevention device according to claim 6, characterized in that: A sealing gasket (8) is movably provided inside the connecting sleeve (7), and the sealing gasket (8) is in contact with the overexposure prevention component (5).

8. The camera overexposure prevention device according to claim 1, characterized in that: The anti-overexposure component (5) is composed of a neutral density filter.

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