A strong electromagnetic protection device for a camera

Abstract

The application discloses a strong electromagnetic protection device for a camera, which comprises a main shell, two end covers and a connecting frame; the camera is installed in the main shell; the connecting frame is installed on the top of the main shell; the two end covers are installed on the two ends of the main shell and are fixedly connected through screws; an ammonia valve mounting seat is installed on the top of the inner wall of the end cover; the bottom of the end cover is provided with a stepped groove; the bottom wall of the stepped groove is provided with a through hole; an electromagnetic shielding light window is installed in the stepped groove and is fixed through a light window fastener; first silver-plated electromagnetic shielding rubber strips are arranged on the two sides of the electromagnetic shielding light window; the two sides of the electromagnetic shielding light window are provided with the first silver-plated electromagnetic shielding rubber strips; the induced current flows on the front and back surfaces of the electromagnetic shielding light window, that is, twice original fields are formed, and the secondary field generated by the incident wave can be better offset.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of strong electromagnetic protection devices, and particularly relates to a strong electromagnetic protection device for a forward-looking camera that is adaptable to high electromagnetic compatibility. BACKGROUND

[0002] With the progress of modern science and technology, modern weapons have not been limited to guns and missiles, and electromagnetic wave weapons have entered the battlefield. The destruction of electromagnetic wave weapons to weapon systems is mainly to destroy the electronic equipment in the system, so that the system loses its working ability. When the microwave power is small, it will disturb the normal work of the equipment; when the microwave power is slightly large, it will cause the electronic components of the equipment to fail or even burn out; when the microwave power is large, the transient electromagnetic field formed by the microwave radiation can generate induced current on the metal surface, which is coupled to the inside of the equipment through antennas, wires, cables and various openings or gaps, and destroys various sensitive components such as sensors and electronic components, so that the components produce state inversion, breakdown, and appear error code, memory information erasure, etc. As the eyes of a helicopter, even the eyes of a battlefield, the camera will cause irreparable consequences if it suddenly "loses sight".

[0003] At present, the camera is only used for observing the scene, and cannot achieve electromagnetic compatibility. Once it encounters strong electromagnetic pulses, it will not work normally. In most cases, the camera will appear noise, which will cause serious interference to the tracking of the camera in serious cases, and even cause unstable work or misjudgment. Under the existing shielding technology, strong electromagnetic interference will gradually cause cumulative effect, which will cause irreversible damage to the internal circuit board.

[0004] Therefore, the technical personnel in the art provide a strong electromagnetic protection device for a camera to solve the problems raised in the above background. SUMMARY

[0005] The present application provides a strong electromagnetic protection device for a camera, which solves the problem that the conventional airborne equipment can only ensure that the communication equipment, power distribution equipment and terminal equipment do not interfere with each other, but cannot work normally when encountering strong electromagnetic pulses, and even causes serious consequences.

[0006] In order to achieve the above purpose, the present application provides the following technical scheme:

[0007] A strong electromagnetic protection device for a camera, comprising:

[0008] A main shell, the inside of the main shell is installed with a camera, and the top of the main shell is installed with a connecting frame;

[0009] Two end covers, the two end covers cover the two ends of the main shell and are fixedly connected through screws;

[0010] The top of the inner wall of the end cover is provided with an ammonia valve mounting seat, the bottom of the end cover is provided with a stepped groove, the bottom wall of the stepped groove is provided with a through hole, an electromagnetic shielding light window is mounted in the stepped groove, the electromagnetic shielding light window is fixed by a light window fastener, and first silver-plated electromagnetic shielding rubber strips are arranged on the two sides of the electromagnetic shielding light window.

[0011] Further, the light window fastener comprises a fastener body, a fixing table is formed by outward protruding the side of the fastener body close to the electromagnetic shielding light window, the fixing table is arranged in the stepped groove and the electromagnetic shielding light window is fixed in the stepped groove.

[0012] Further, a light-transmitting through hole is formed in the middle of the fastener body, a light-transmitting cover plate is arranged on the light-transmitting through hole, and the light-transmitting cover plate is arranged on the side of the fastener body away from the electromagnetic shielding light window.

[0013] Further, a plurality of first air holes are formed in the side wall of the fastener body, and the air holes are communicated with the light-transmitting through hole.

[0014] Further, a groove is formed in the end cover by inward recessing the side of the end cover close to the side of the main shell close to the circumference, a second silver-plated electromagnetic shielding rubber strip is arranged at the connection between the groove and the main shell, and an annular protrusion is formed between the groove and the stepped groove 2 of the end cover, and the annular protrusion is embedded in the main shell.

[0015] Further, a plurality of second air holes are formed in the side wall of the pressing ring.

[0016] Further, a tempered glass is arranged on the side of the pressing ring away from the electromagnetic shielding light window.

[0017] Further, a mounting groove is formed in the side of the fixing ring close to the tempered glass by inward recessing, and the tempered glass is arranged in the mounting groove.

[0018] Further, a convex ring is formed by outward protruding the side of the pressing ring close to the tempered glass, the convex ring extends into the mounting groove and presses the tempered glass in the mounting groove.

[0019] In the above technical solution, the strong electromagnetic shielding device for the camera has the following beneficial effects:

[0020] 1. The first silver-plated electromagnetic shielding rubber strips are arranged on the two sides of the electromagnetic shielding light window, and the induced current flows on the front and back surfaces of the electromagnetic shielding light window, that is, twice original fields are formed, so that the secondary field generated by the incident wave can be better offset.

[0021] 2、The application adopts an electromagnetic shielding light window to replace the conventional light window without electromagnetic shielding effect. A conductive metal film is arranged on the side of the electromagnetic shielding light window close to the main shell. Compared with the traditional conductive metal grid, the surface current flow is greatly improved, electromagnetic wave leakage into the application is effectively avoided, and the electromagnetic shielding effect of the overall device is greatly improved.

[0022] 3、A plurality of first ventilation holes are arranged on the side wall of the fastener body of the application, and the ventilation holes are communicated with the light transmission holes, so that the water vapor adhered to the surface due to the large temperature difference between the inside and outside does not cause the image to be unclear.

[0023] 4、The annular protrusion is formed between the groove and the stepped groove of the end cover, and the annular protrusion is embedded in the main shell. The incident wave is reflected by the plane, then is shielded and absorbed by the second silver-plated electromagnetic shielding rubber strip formed in the opposite direction of the original factory, and finally is absorbed by the right-angle structure between the annular protrusion and the main shell. Electromagnetic waves entering the interior of the device are reduced, so that they cannot destroy the original induced current, thereby achieving the electromagnetic shielding effect.

[0024] 5、The role of the tempered glass is to avoid the situation that the electromagnetic shielding light window is broken by small stones caused by air flow when the plane lands. The second ventilation hole ensures that the temperature inside and outside the tempered glass 62 is the same, so as to avoid the situation that the water vapor adhered to the surface due to the large temperature difference between the inside and outside causes the image to be unclear. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described below are only some embodiments described in the application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0026] Figure 1 A disassembly structure schematic view of a strong electromagnetic protection device for a camera provided by the embodiment of the application;

[0027] Figure 2 For Figure 1 A sectional view of the end cover on the left side in the figure.

[0028] Explanation of reference signs:

[0029] 10, main shell; 11, connecting frame;

[0030] 20, end cover; 21, ammonia valve mounting seat; 22, stepped groove; 23, through hole; 24, groove; 25, second silver-plated electromagnetic shielding rubber strip;

[0031] 30, rear cover;

[0032] 40, electromagnetic shielding light window; 41, first silver-plated electromagnetic shielding rubber strip;

[0033] 50, fastener body; 51, fixing platform; 52, light-transmitting through hole; 53, light-transmitting cover plate; 54, first air hole;

[0034] 60, pressing ring; 61, second air hole; 62, tempered glass; 63, fixing ring; 64, mounting groove; 65, convex ring. DETAILED DESCRIPTION

[0035] In order to make the technical personnel in the art better understand the technical solutions of the present application, the present application will be further described in detail below in conjunction with the drawings.

[0036] Referring to Figures 1-2 as shown;

[0037] The strong electromagnetic protection device for a camera provided by the embodiment of the present application comprises:

[0038] A main shell 10, wherein a camera is installed inside the main shell 10, and a connecting frame 11 is installed on the top of the main shell 10;

[0039] Two end covers 20, wherein the two end covers 20 cover the two ends of the main shell 10;

[0040] An ammonia valve mounting seat 21 is installed on the top of the inner wall of the end cover 20, the bottom of the end cover 20 has a stepped groove 22, the bottom wall of the stepped groove 22 has a through hole 23, an electromagnetic shielding light window 40 is installed in the stepped groove 22, the electromagnetic shielding light window 40 is fixed by a light window fastener, and first silver-plated electromagnetic shielding rubber strips 41 are arranged on the two sides of the electromagnetic shielding light window 40. Induced current flows exist on the front and back surfaces of the electromagnetic shielding light window 40, that is, twice primary fields are formed, and the secondary field generated by the incident wave can be better offset.

[0041] The electromagnetic shielding light window 40 is adopted in the present application to replace the conventional light window which does not have the effect of electromagnetic shielding. A layer of conductive metal film is arranged on the side of the electromagnetic shielding light window 40 close to the main shell 10. Compared with the traditional conductive metal grid, the current flow through the surface is greatly improved, electromagnetic wave leakage into the present application can be effectively avoided, and the electromagnetic shielding effect of the overall device is greatly improved.

[0042] The light window fastener comprises a fastener body 50, the fastener body 50 is outwardly protruded to form a fixing platform 51 on the side close to the electromagnetic shielding light window 40, and the fixing platform 51 is arranged in the stepped groove 22 and fixes the electromagnetic shielding light window 40 in the stepped groove 22.

[0043] The middle part of the fastener body 50 is provided with a light transmission hole 52, and a light transmission cover 53 is arranged on the light transmission hole 52, and the light transmission cover 53 is arranged on the fastener body 50 and away from the electromagnetic shielding light window 40.

[0044] A plurality of first air holes 54 are arranged on the side wall of the fastener body 50, and the air holes 54 are communicated with the light transmission hole 52, so that the water vapor is prevented from being attached to the surface due to the large temperature difference between the inside and outside, thereby causing the unclear image.

[0045] The recess 24 is formed on the end cover 20 and is close to the side of the main shell 10 and close to the circumference, and a second silver-plated electromagnetic shielding rubber strip 25 is arranged at the connection between the recess 24 and the main shell 10. The recess 24 and the stepped groove 22 of the end cover 20 form an annular protrusion, which is embedded in the main shell 10. The incident wave is reflected by the plane, and then is absorbed by the second silver-plated electromagnetic shielding rubber strip 25 to form the secondary field shielding in the opposite direction of the original factory direction. Finally, the electromagnetic wave is absorbed by the right-angle structure between the annular protrusion and the main shell 10, so that the electromagnetic wave entering the equipment is reduced, and the original induced current cannot be damaged, thereby achieving the electromagnetic shielding effect.

[0046] The compression ring 60 is arranged on the end cover 20 and away from the electromagnetic shielding light window 40, and a plurality of second air holes 61 are arranged on the side wall of the compression ring 60. The outer side of the compression ring 60 is provided with a tempered glass 62, and the tempered glass 62 is installed on the compression ring 60 through a fixing ring 63. The tempered glass 62 can prevent the electromagnetic shielding light window 40 from being broken by the small gravel caused by the airflow when the plane lands. The second air holes 61 can ensure that the temperature inside and outside the tempered glass 62 is the same, so that the water vapor is prevented from being attached to the surface due to the large temperature difference between the inside and outside, thereby causing the unclear image.

[0047] The side of the fixing ring 63 close to the tempered glass 62 is recessed inward to form a mounting groove 64, and the tempered glass 62 is arranged in the mounting groove 64. The side of the compression ring 60 close to the tempered glass 62 is protruded outward to form a convex ring 65, and the convex ring 65 extends into the mounting groove 64 and presses the tempered glass 62 in the mounting groove 64.

[0048] The above describes some exemplary embodiments of the present application by way of illustration only, and it is self-evident that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the claims of the present application.

Claims

1. A strong electromagnetic protection device for a camera, characterized in that, The utility model relates to a kind of camera lens protection device, including: Main shell (10), the inside of the main shell (10) is mounted with camera, the top of main shell (10) is mounted with connecting frame (11); Two end covers (20), two the end cover (20) cover the both ends of main shell (10); The top of the inner wall of the end cover (20) is mounted with ammonia valve mounting seat (21), the bottom of the end cover (20) has stepped groove (22), the bottom wall of the stepped groove (22) has through-hole (23), electromagnetic shielding light window (40) is installed in the stepped groove (22), electromagnetic shielding light window (40) is fixed by light window fastener, the both sides of electromagnetic shielding light window (40) are provided with first silver-plated electromagnetic shielding rubber strip (41), a layer of conductive metal film is provided on electromagnetic shielding light window (40) close to the side of main shell (10); The end cover (20) is recessed to form recess (24) inwards close to the side of main shell (10) close to circumference, second silver-plated electromagnetic shielding rubber strip (25) is provided between the connection of recess (24) and main shell (10), annular protrusion is formed between the recess (24) of the end cover (20) and the stepped groove (22), and the annular protrusion is embedded in main shell (10).

2. A device for protecting a camera from strong electromagnetic fields according to claim 1, characterized in that: The light window fastener includes fastener main body (50), the side of the fastener main body (50) is outwardly protruded to form fixed platform (51) close to electromagnetic shielding light window (40), and the fixed platform (51) is arranged in the stepped groove (22) and fixes electromagnetic shielding light window (40) in the stepped groove (22).

3. A device for protecting a camera from strong electromagnetic fields according to claim 2, characterized in that: The middle part of the fastener main body (50) is provided with light-transmitting through-hole (52), and the light-transmitting through-hole (52) is provided with light-transmitting cover plate (53), which is arranged on the side of the fastener main body (50) away from electromagnetic shielding light window (40).

4. A device for protecting a camera from strong electromagnetic fields according to claim 3, characterized in that: A plurality of first air holes (54) are formed in the side wall of the fastener main body (50), and the air holes (54) are communicated with the light-transmitting through-hole (52).

5. A device for protecting a camera from strong electromagnetic fields according to claim 1, characterized in that: A plurality of second air holes (61) are formed in the side wall of the fastener main body (50), and the air holes (54) are communicated with the light-transmitting through-hole (52).

6. A device for strong electromagnetic protection of a camera according to claim 5, characterized in that: The outer side of the fastener main body (50) is provided with tempered glass (62), and the tempered glass (62) is arranged on the fastener main body (60) by fixing ring (63).

7. A device for strong electromagnetic protection of a camera according to claim 6, characterized in that: The side of the fixing ring (63) close to the tempered glass (62) is recessed inward to form mounting groove (64), and the tempered glass (62) is arranged in the mounting groove (64).

8. A device for strong electromagnetic protection of a camera according to claim 7, characterized in that: The side of the fastener main body (50) close to the tempered glass (62) is outwardly protruded to form convex ring (65), and the convex ring (65) is inserted into the mounting groove (64) and tightly presses the tempered glass (62) in the mounting groove (64).

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