Electromagnetic shielding observation window and military helicopter

Abstract

The application provides an electromagnetic shielding observation window and a military helicopter, which comprises a first transparent piece, a sealing structure and a second transparent piece. The first transparent piece is provided with an observation opening. The sealing structure at least covers a structure of the first transparent piece forming a circle of the observation opening and extends annularly into the observation opening and then protrudes from the observation opening. The sealing structure can conduct electricity. The second transparent piece is arranged on a side of the first transparent piece protruding with the sealing structure. One end of the second transparent piece is rotationally connected with a side edge of the observation opening, so that the other end of the second transparent piece can be rotationally connected with the other side edge of the observation opening in a direction close to the observation opening in a detachable mode. When the other end of the second transparent piece is connected with the other side edge of the observation opening, the second transparent piece extrudes the sealing structure protruding from the observation opening. The first transparent piece and the second transparent piece are respectively provided with a conductive layer on a side corresponding to an outer surface of the electromagnetic shielding observation window, or the first transparent piece and the second transparent piece are provided with conductive layers on two sides corresponding to inner and outer surfaces of the electromagnetic shielding observation window.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of windows, in particular to an electromagnetic shielding observation window and a military helicopter. BACKGROUND

[0002] The military helicopter is a helicopter capable of performing military tasks, and its safety performance is very important.

[0003] An observation window is arranged on the military helicopter, and the observation window is slidably arranged on the observation opening. When the observation window slides relative to the observation opening, the observation opening can be opened or closed. The arrangement of the observation window enables personnel inside the military helicopter to observe the situation outside the military helicopter through the observation window, and in maintenance and other operations, the observation opening can be opened through the observation window to transfer maintenance tools and other articles.

[0004] However, in order to ensure that the sliding process of the observation window relative to the observation opening is smoother, there is a gap between the sliding structure of the observation window and the military helicopter, which causes electromagnetic waves outside the military helicopter to enter the inside of the military helicopter from the gap, thereby endangering personnel and electronic equipment inside the military helicopter. SUMMARY

[0005] The purpose of the embodiments of the present application is to provide an electromagnetic shielding observation window and a military helicopter to solve the problem that after the observation window slides and closes the observation opening, there is a gap between the observation window and the military helicopter, which causes electromagnetic waves outside the military helicopter to enter the inside of the military helicopter from the gap, thereby endangering personnel and electronic equipment inside the military helicopter.

[0006] To solve the above technical problems, in a first aspect, the embodiments of the present application provide an electromagnetic shielding observation window, which comprises a first transparent piece, a sealing structure and a second transparent piece. The first transparent piece is provided with an observation opening. The sealing structure at least covers a structure formed on the first transparent piece to form the observation opening and extends annularly into the observation opening and then protrudes from the observation opening. The sealing structure can conduct electricity. The second transparent piece is arranged on the side of the first transparent piece where the sealing structure protrudes. One end of the second transparent piece is rotationally connected to one side edge of the observation opening, so that the other end of the second transparent piece can be rotationally connected to the other side edge of the observation opening in a direction close to the observation opening, and the second transparent piece can press the sealing structure protruding from the observation opening when the other end of the second transparent piece is connected to the other side edge of the observation opening. The first transparent piece and the second transparent piece are respectively provided with a conductive layer on the side corresponding to the outer surface of the electromagnetic shielding observation window, or the first transparent piece and the second transparent piece are provided with a conductive layer on both sides corresponding to the inner and outer surfaces of the electromagnetic shielding observation window.

[0007] In some embodiments, the sealing structure comprises: a first portion and a second portion, the first portion covering a structure on the first transparent member forming the viewing port and extending annularly into the viewing port and then extending out of the viewing port, and the second portion covering a structure on the second transparent member around the periphery and abutting against a surface of the first portion near the second transparent member.

[0008] In some embodiments, the first portion comprises: a first structure, a second structure and a third structure, the first structure covering a structure on the first transparent member forming the viewing port, the second structure covering a surface of the first structure away from the first transparent member and extending towards the viewing port, and one end of the third structure covering a portion of the second structure corresponding to the viewing port, and the other end of the third structure extending out of the viewing port to abut against a surface of the second transparent member near the viewing port; wherein the strength of the second structure is greater than that of any one of the first structure and the third structure.

[0009] In some embodiments, the structure forming the viewing port comprises: a first annular surface, a second annular surface and an inner wall of the viewing port connecting the first annular surface and the second annular surface respectively; the second structure comprises: a first conductive member and a second conductive member, the first conductive member being connected to a side of the first structure away from the first annular surface and extending into the viewing port, and the second conductive member being connected to a side of the first structure away from the second annular surface and extending linearly towards the viewing port, the first conductive member inside the viewing port and the second conductive member corresponding to the viewing port being connected by a first structure adhesive, and the first conductive member and the second conductive member on both sides of the first structure adhesive being covered by one end of the third structure.

[0010] In some embodiments, a portion of the first conductive member inside the viewing port is parallel to a side of the first structure away from the inner wall of the viewing port, and another portion is parallel to the second conductive member corresponding to the viewing port.

[0011] In some embodiments, the other end of the third structure extends obliquely, and the included angle between the two ends of the third structure near the side of the second transparent member is obtuse; and / or the thickness of the other end of the third structure gradually decreases towards the side of the second transparent member.

[0012] In some embodiments, the second part comprises: a fourth structure and a fifth structure, the fourth structure covers a ring of edges of the second transparent piece, the fifth structure linearly extends from a surface of the fourth structure away from the second transparent piece and towards the first structure, and the fifth structure abuts with one end of the third structure.

[0013] In some embodiments, a ring of edges of the second transparent piece comprises: a third annular surface, a fourth annular surface, and side surfaces connecting the third annular surface and the fourth annular surface respectively; the fifth structure comprises: a third conductive piece and a fourth conductive piece, the third conductive piece is connected with a side of the fourth structure away from the third annular surface and linearly extends towards the first structure, the fourth conductive piece is connected with a side of the fourth structure away from the fourth annular surface and extends towards the first structure, the third conductive piece and the fourth conductive piece corresponding to the first structure are connected by a second structural adhesive; wherein the fourth conductive piece abuts with one end of the third structure.

[0014] In some embodiments, part of the fourth conductive piece is parallel to the surface of the fourth structure away from the side surface, and the third conductive piece and the fourth conductive piece connected by the second structural adhesive are parallel to each other.

[0015] In the second aspect, the embodiments of the present application provide a military helicopter, the military helicopter comprises: a helicopter body and the electromagnetic shielding observation window in any one of the above embodiments, the helicopter body is provided with a window, and the first transparent piece of the electromagnetic shielding observation window is fixed in the window and closes the window.

[0016] The application provides an electromagnetic shielding observation window and a military helicopter. One end of the second transparent piece is rotationally connected with one side edge of the observation opening on the first transparent piece to enable the second transparent piece to rotate relative to the first transparent piece towards the observation opening, and the other end of the second transparent piece can be connected with the other side edge of the observation opening on the first transparent piece after the second transparent piece rotates towards the observation opening. Thus, the second transparent piece is fixed on one side of the first transparent piece, and the fixed sealing structure is connected with one circle of the first transparent piece and abuts against one circle of the second transparent piece, so that there is no gap between the second transparent piece and the first transparent piece, thereby avoiding the electromagnetic waves outside the military helicopter from entering the inside of the military helicopter between the first transparent piece and the second transparent piece, and avoiding the personnel inside the military helicopter from being in danger of electromagnetic wave injury, and avoiding the rain and other foreign matters from entering the inside of the military helicopter through the position between the first transparent piece and the second transparent piece. In addition, when the first transparent piece and the second transparent piece are respectively provided with conductive layers on the side corresponding to the outer surface of the electromagnetic shielding observation window, and the sealing structure between the first transparent piece and the second transparent piece is also conductive, thus the electromagnetic waves outside the electromagnetic shielding observation window can be prevented from entering the inside of the electromagnetic shielding observation window through the first transparent piece, the second transparent piece and the sealing structure between the first transparent piece and the second transparent piece, so as to further avoid the personnel and electronic equipment inside the military helicopter from being in danger of electromagnetic wave injury. When the first transparent piece and the second transparent piece are respectively provided with conductive layers on the two sides corresponding to the inner and outer surfaces of the electromagnetic shielding observation window, and the sealing structure between the first transparent piece and the second transparent piece is also conductive, thus when the conductive layer on the side of the first transparent piece and the second transparent piece corresponding to the outer surface of the electromagnetic shielding observation window is damaged, the conductive layer on the side of the first transparent piece and the second transparent piece corresponding to the inner surface of the electromagnetic shielding observation window can prevent the electromagnetic waves outside the electromagnetic shielding observation window from entering the inside of the electromagnetic shielding observation window through the first transparent piece, the second transparent piece and the sealing structure between the first transparent piece and the second transparent piece, so as to further avoid the personnel and electronic equipment inside the military helicopter from being in danger of electromagnetic wave injury.

[0017] The above description is only a summary of the technical solutions of the application. In order to make the technical solutions of the application more clearly understood and implemented, the following will describe the preferred embodiments of the application in detail with reference to the contents of the description. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when read in conjunction with the accompanying drawings, in which several embodiments of the application are illustrated by way of example. In the drawings, like reference numerals refer to like elements throughout, and in which:

[0019] Figure 1A partial structure schematic diagram of an electromagnetic shielding observation window according to an embodiment of the present application;

[0020] Figure 2 A cross-sectional schematic diagram of an electromagnetic shielding observation window according to an embodiment of the present application without a sealing structure;

[0021] Figure 3 A cross-sectional schematic diagram of an electromagnetic shielding observation window according to an embodiment of the present application corresponding Figure 2 to a position A with a sealing structure;

[0022] Figure 4 A cross-sectional schematic diagram of an electromagnetic shielding observation window according to an embodiment of the present application corresponding Figure 2 to a position A with a sealing structure;

[0023] Figure 5 A structure schematic diagram of an electromagnetic shielding observation window according to an embodiment of the present application.

[0024] BRIEF DESCRIPTION OF THE DRAWINGS

[0025] 10, electromagnetic shielding observation window; 11, first transparent piece; 111, observation port; 112, observation port inner wall; 12, sealing structure; 121, first part; 1211, first structure; 1212, second structure; 12121, first conductive piece; 12122, second conductive piece; 1213, third structure; 122, second part; 1221, fourth structure; 1222, fifth structure; 12221, third conductive piece; 12222, fourth conductive piece; 13, second transparent piece; 131, side surface; 141, hinge; 142, lock. DETAILED DESCRIPTION

[0026] In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the accompanying drawings to make a clear and complete description of the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0027] The embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0028] Military helicopters are helicopters capable of performing military tasks, and their safety performance is very important.

[0029] At present, an observation port is formed on a military helicopter, and an observation window is slidably arranged on the observation port. When the observation window slides relative to the observation port, the observation port can be opened or closed. The observation window enables personnel inside the military helicopter to observe the situation outside the military helicopter, and in maintenance and other operations, the observation port can be opened through the observation window to transfer maintenance tools and other articles.

[0030] However, in order to ensure smooth sliding of the observation window relative to the observation port, a gap exists between the sliding structure of the observation window and the military helicopter, which causes electromagnetic waves outside the military helicopter to enter the inside of the military helicopter from the gap, thereby endangering personnel and electronic equipment inside the military helicopter (e.g., electronic equipment cannot work due to interference).

[0031] In addition, with the development of modern radar technology, electronic warfare technology, and missile tracking system technology, it is required that the observation window also has an electromagnetic shielding function.

[0032] First aspect

[0033] In view of this, the present application provides an electromagnetic shielding observation window 10, as shown in Figures 1 to 5 The electromagnetic shielding observation window 10 includes a first transparent piece 11, a sealing structure 12, and a second transparent piece 13. The first transparent piece 11 has an observation port 111 formed therein. The sealing structure 12 at least covers a structure on the first transparent piece 11 forming the observation port 111 and extends annularly into the observation port 111 and then protrudes from the observation port 111. The sealing structure 12 is electrically conductive. The second transparent piece 13 is arranged on the side of the first transparent piece 11 protruding with the sealing structure 12. One end of the second transparent piece 13 is rotatably connected to one side edge of the observation port 111, so that the other end of the second transparent piece 13 can be rotatably connected to the other side edge of the observation port 111 in a direction close to the observation port 111, and the second transparent piece 13 can press the sealing structure 12 protruding from the observation port 111 when the other end of the second transparent piece 13 is connected to the other side edge of the observation port 111. The first transparent piece 11 and the second transparent piece 13 are respectively provided with an electrically conductive layer on the side corresponding to the outer surface of the electromagnetic shielding observation window 10, or the first transparent piece 11 and the second transparent piece 13 are provided with an electrically conductive layer on both sides corresponding to the inner and outer surfaces of the electromagnetic shielding observation window 10.

[0034] Specifically, the first transparent member 11 is provided with an observation opening 111, which is in communication with the inner and outer surfaces of the first transparent member 11, and the inner and outer surfaces of the first transparent member 11 correspond to the inner and outer surfaces of the electromagnetic shielding observation window 10, respectively. The first transparent member 11 can be a flat panel structure or a curved panel structure, and can be made of polymethyl methacrylate, polycarbonate, polystyrene or modified transparent materials of the above materials. Figure 1 The observation opening 111 can be rectangular, circular or of other shapes.

[0035] The sealing structure 12 at least covers the structure of the observation opening 111 of the first transparent member 11 and extends annularly into the observation opening 111 and then extends annularly out of the observation opening 111, and the structure of the observation opening 111 includes a first annular surface, a second annular surface and an observation opening inner wall 112 connecting the first annular surface and the second annular surface, that is, the sealing structure 12 at least covers the observation opening inner wall 112 and the first annular surface and the second annular surface connected to the observation opening inner wall 112, and the sealing structure 12 extends annularly into the observation opening 111 and extends annularly out of the observation opening 111. Here, the sealing structure 12 can extend out of the observation opening 111 from the side corresponding to the outer surface of the first transparent member 11, or extend out of the observation opening 111 from the side corresponding to the inner surface of the first transparent member 11.

[0036] The second transparent member 13 is arranged on the side of the first transparent member 11 from which the sealing structure 12 extends, and when the sealing structure 12 extends out of the observation opening 111 from the side corresponding to the outer surface of the first transparent member 11, the second transparent member 13 is arranged on the outer surface side of the first transparent member 11, and when the sealing structure 12 extends out of the observation opening 111 from the side corresponding to the inner surface of the first transparent member 11, the second transparent member 13 is arranged on the inner surface side of the first transparent member 11. One end of the second transparent member 13 is rotatably connected to one side edge of the observation opening 111, so that the other end of the second transparent member 13 can be rotatably connected to the other side edge of the observation opening 111, that is, of the two side edges of the observation opening 111 on the same side of the first transparent member 11, one side edge is rotatably connected to one end of the second transparent member 13, and the other side edge is detachably connected to the other end of the second transparent member 13. The rotatable connection can be achieved by a rotating shaft or a hinge 141 as shown in Figure 5 The detachable connection can be achieved by a hinge 141 as shown in Figure 5The first screw respectively connects the lock 142 and the first transparent piece 11, and the second screw respectively connects the lock 142 and the second transparent piece 13, or other connection structures are realized, here, the hinge 141 can be made of titanium alloy, stainless steel, carbon steel, alloy steel, aluminum alloy, copper alloy, polyformaldehyde, polypropylene, polyethylene, nylon or polyether ether ketone and the like, the lock 142 can be made of titanium alloy, stainless steel, carbon steel, alloy steel, aluminum alloy, copper alloy, polyformaldehyde, polypropylene, polyethylene, nylon or polyether ether ketone and the like, and the first screw and the second screw can be made of titanium alloy, stainless steel, carbon steel, alloy steel, aluminum alloy, copper alloy, polyformaldehyde, polypropylene, polyethylene, polytetrafluoroethylene, nylon or polyether ether ketone and the like. The other end of the second transparent piece 13 in the above is connected with the other side edge of the observation port 111, and the second transparent piece 13 extrudes the sealing structure 12 extending out of the observation port 111, and the sealing structure 12 extending out of the observation port 111 is deformed after extrusion to realize more closely abutting with the second transparent piece 13. One end of the second transparent piece 13 in the above is rotationally connected with one side edge of the observation port 111, and the other end is detachably connected with the other side edge of the observation port 111, and the orthographic projection area of the second transparent piece 13 to the first transparent piece 11 can be greater than the area where the observation port 111 is located to at least partially coincide with the area where the observation port 111 is located, can be equal to the area where the observation port 111 is located and coincide with the area where the observation port 111 is located, or can be smaller than the area where the observation port 111 is located and partially coincide with the area where the observation port 111 is located. The second transparent piece 13 in the above can be a planar plate structure or a curved plate structure, and the shape of the second transparent piece 13 can be consistent with the shape of the observation port 111 or inconsistent with the shape of the observation port 111. The second transparent piece 13 in the above can be made of polymethyl methacrylate, polycarbonate, polystyrene or modified transparent materials of the above materials and the like.

[0037] The first transparent piece 11 and the second transparent piece 13 in the above are respectively provided with a conductive layer corresponding to one side of the outer surface of the electromagnetic shielding observation window 10, or the first transparent piece 11 and the second transparent piece 13 are respectively provided with a conductive layer corresponding to the inner and outer surfaces of the electromagnetic shielding observation window 10, that is, the first transparent piece 11 and the second transparent piece 13 are respectively provided with a conductive layer corresponding to part of the outer surface of the military helicopter, or the first transparent piece 11 and the second transparent piece 13 are respectively provided with a conductive layer corresponding to part of the outer surface of the military helicopter and also provided with a conductive layer corresponding to part of the inner surface of the military helicopter. Here, the conductive layer can be a conductive film, a conductive metal mesh or silver nanowire.

[0038] The electromagnetic shielding observation window 10 can be arranged on the window of the military helicopter to seal the window of the military helicopter, and the first transparent piece 11 and the second transparent piece 13 of the electromagnetic shielding observation window 10 are arranged so that the personnel inside the military helicopter can observe the situation outside the military helicopter through the first transparent piece 11 or the second transparent piece 13.

[0039] In an embodiment, referring to Figures 1 to 5 As shown, the observation port 111 is provided with a hinge 141 and a lock 142 on both side edges of the outer surface of the first transparent piece 11, the sealing structure 12 covers a structure of the first transparent piece 11 forming the observation port 111 and extends annularly into the observation port 111, and then extends annularly from one side of the outer surface of the first transparent piece 11 of the observation port 111, one end of the second transparent piece 13 is connected with the hinge 141, when the other end of the second transparent piece 13 is rotated to the direction of the observation port 111 and presses the sealing structure 12 extending from the observation port 111, the lock 142 is connected with the first transparent piece 11 and the second transparent piece 13 through the first screw and the second screw, so as to fix the second transparent piece 13 on the outer surface side of the first transparent piece 11.

[0040] In the embodiment, one end of the second transparent piece 13 is rotatably connected with one side edge of the observation port 111 on the first transparent piece 11 so that the second transparent piece 13 can rotate towards the observation port 111 relative to the first transparent piece 11, and the other end of the second transparent piece 13 can be connected with the other side edge of the observation port 111 on the first transparent piece 11 after the second transparent piece 13 rotates towards the observation port 111, thereby fixing the second transparent piece 13 on one side of the first transparent piece 11, and the fixed sealing structure 12 connects one circle of the first transparent piece 11 and abuts one circle of the second transparent piece 13, so that there is no gap between the second transparent piece 13 and the first transparent piece 11, thereby avoiding the electromagnetic waves outside the military helicopter from entering the inside of the military helicopter between the first transparent piece 11 and the second transparent piece 13, so as to avoid the personnel and electronic equipment inside the military helicopter from being harmed by the electromagnetic waves, and at the same time, avoiding the rain and other foreign matters from entering the inside of the military helicopter through the position between the first transparent piece 11 and the second transparent piece 13. In addition, when the first transparent piece 11 and the second transparent piece 13 are respectively provided with conductive layers corresponding to one side of the outer surface of the electromagnetic shielding observation window 10, and the sealing structure 12 between the first transparent piece 11 and the second transparent piece 13 is also conductive, thereby avoiding the electromagnetic waves outside the electromagnetic shielding observation window 10 from entering the inside of the electromagnetic shielding observation window 10 through the first transparent piece 11, the second transparent piece 13 and the sealing structure 12 between the first transparent piece 11 and the second transparent piece 13, so as to further avoid the personnel inside the military helicopter from being harmed by the electromagnetic waves; when the first transparent piece 11 and the second transparent piece 13 are respectively provided with conductive layers corresponding to the two sides of the inner and outer surfaces of the electromagnetic shielding observation window 10, and the sealing structure 12 between the first transparent piece 11 and the second transparent piece 13 is also conductive, thereby when the conductive layer corresponding to one side of the outer surface of the electromagnetic shielding observation window 10 of the first transparent piece 11 and the second transparent piece 13 is damaged, the conductive layer corresponding to the inner surface of the electromagnetic shielding observation window 10 of the first transparent piece 11 and the second transparent piece 13 can avoid the electromagnetic waves outside the electromagnetic shielding observation window 10 from entering the inside of the electromagnetic shielding observation window 10 through the first transparent piece 11, the second transparent piece 13 and the sealing structure 12 between the first transparent piece 11 and the second transparent piece 13, so as to further avoid the personnel inside the military helicopter from being harmed by the electromagnetic waves.

[0041] It can be understood that the conductive performance of the sealing structure 12 and the conductive performance of the conductive layer can absorb the electromagnetic waves outside the military helicopter, thereby avoiding the electromagnetic waves outside the military helicopter from penetrating the sealing structure 12 and the conductive layer to enter the inside of the military helicopter.

[0042] In some embodiments, referring to Figure 3 and Figure 4As shown, the sealing structure 12 comprises a first portion 121 and a second portion 122, the first portion 121 covers a structure surrounding the observation port 111 on the first transparent piece 11 and extends annularly into the observation port 111 and then extends out of the observation port 111, and the second portion 122 covers a periphery of the second transparent piece 13 and abuts against a surface of the first portion 121 close to the second transparent piece 13.

[0043] Specifically, the second portion 122 covers a periphery of the second transparent piece 13 and abuts against a surface of the first portion 121 close to the second transparent piece 13, and the periphery of the second transparent piece 13 comprises a third annular surface, a fourth annular surface and a side surface 131 connecting the third annular surface and the fourth annular surface, that is, the second transparent piece 13 not only covers the side surface 131 of the second transparent piece 13 but also comprises the third annular surface and the fourth annular surface connected with the side surface 131, and the second portion 122 and the first portion 121 abut against each other, and the abutting part is annular.

[0044] In the embodiment, the first portion 121 covers a structure surrounding the observation port 111 on the first transparent piece 11 and extends annularly into the observation port 111 and then extends out of the observation port 111, that is, the first portion 121 extends out of the observation port 111 with a first annular part, and the first annular part abuts against a surface of the second transparent piece 13 close to the observation port 111, and the second portion 122 covers a periphery of the second transparent piece 13 and abuts against a surface of the first portion 121 close to the second transparent piece 13, that is, the second portion 122 has a second annular part, and the second annular part abuts against the first portion 121, thereby forming two layers of abutment between the first transparent piece 11 and the second transparent piece 13, so as to further avoid the electromagnetic wave outside the electromagnetic shielding observation window 10 from entering the inside of the electromagnetic shielding observation window 10 through the sealing structure 12 between the first transparent piece 11 and the second transparent piece 13, so as to further avoid the personnel inside the military helicopter from being harmed by the electromagnetic wave.

[0045] In some embodiments, referring to Figure 3 and Figure 4As shown, the first part 121 comprises a first structure 1211, a second structure 1212 and a third structure 1213. The first structure 1211 covers a structure surrounding the observation port 111 on the first transparent piece 11. The second structure 1212 covers the surface of the first structure 1211 away from the first transparent piece 11 and extends towards the observation port 111. One end of the third structure 1213 covers the part of the second structure 1212 corresponding to the observation port 111. The other end of the third structure 1213 extends from the observation port 111 to abut the surface of the second transparent piece 13 close to the observation port 111. The strength of the second structure 1212 is greater than that of any one of the first structure 1211 and the third structure 1213.

[0046] Specifically, the first structure 1211 covers a structure surrounding the observation port 111 on the first transparent piece 11. The structure surrounding the observation port 111 comprises a first annular surface, a second annular surface and an observation port inner wall 112 connecting the first annular surface and the second annular surface. Therefore, the first structure 1211 has at least a first annular recess, and the inner contour of the first annular recess is consistent with the outer contour of the structure surrounding the observation port 111, so that the structure surrounding the observation port 111 can extend into the first annular recess to be covered by the first structure 1211. The first structure 1211 can be made of various conductive rubbers such as natural rubber, polysulfide rubber, silicone rubber, styrene butadiene rubber, chloroprene rubber, nitrile rubber, polyurethane rubber and ethylene propylene diene rubber, or conductive cloth, conductive glue, copper foil, aluminum foil and other materials.

[0047] The second structure 1212 in the above description covers the surface of the first structure 1211 away from the first transparent piece 11 and extends to the direction of the observation port 111, that is, the second structure 1212 at least has a ring-shaped second recess, and the inner contour of the ring-shaped second recess is consistent with the outer contour of the side of the first structure 1211 away from the first transparent piece 11, so that the side of the first structure 1211 away from the first transparent piece 11 can be attached to the inner surface of the ring-shaped second recess to be covered by the second structure 1212, at the same time, the second structure 1212 extends to the direction of the observation port 111, here, the extending part can be located in the observation port 111, can be located outside the observation port 111, or can be partially located in the observation port 111 and partially located outside the observation port 111. The covering of the first structure 1211 by the second structure 1212 in the above description makes the surface of the first structure 1211 covered by the second structure 1212 and the surface of the second structure 1212 covering the first structure 1211 contact with each other, and the surfaces of the second structure 1212 and the first structure 1211 contacting with each other can be connected by structural glue, here, the structural glue can be the structural glue originally possessed by any surface of the first structure 1211 and the second structure 1212 contacting with each other, or can be filled between the first structure 1211 and the second structure 1212, of course, the surfaces of the second structure 1212 and the first structure 1211 contacting with each other can also be connected by clamping or other ways, such as: the surfaces of the first structure 1211 and the second structure 1212 contacting with each other are respectively provided with clamping recesses and clamping protrusions adapted to each other. The second structure 1212 in the above description can be made of copper alloy, nickel alloy, aluminum alloy, magnesium-aluminum alloy, titanium alloy, stainless steel or carbon fiber composite material, etc.

[0048] The third structure 1213 covers one end of the second structure 1212 corresponding to the observation port 111, and the other end of the third structure 1213 abuts against the surface of the second transparent piece 13 close to the observation port 111, that is, the third structure 1213 has at least a ring-shaped third recess, and the inner contour of the ring-shaped third recess is consistent with the outer contour of the side of the second structure 1212 away from the first structure 1211, so that the side of the second structure 1212 away from the first structure 1211 can fit the inner surface of the ring-shaped third recess to be covered by the third structure 1213, and the other end of the third structure 1213 extends from the observation port 111. After the third structure 1213 covers the second structure 1212, the surfaces of the second structure 1212 covered by the third structure 1213 and the surfaces of the second structure 1212 covered by the third structure 1213 contact each other, and the surfaces of the third structure 1213 and the second structure 1212 contacting each other can be connected by structural glue. The structural glue herein can be on any surface of the second structure 1212 and the third structure 1213 contacting each other, or can be filled between the second structure 1212 and the third structure 1213. Of course, the surfaces of the third structure 1213 and the second structure 1212 contacting each other can also be connected by clamping or other means to realize the connection between the contacting surfaces, such as: the surfaces of the second structure 1212 and the third structure 1213 contacting each other are respectively provided with clamping recesses and clamping protrusions adapted to each other. The end of the third structure 1213 connected to the second structure 1212 can be a conductive rubber, such as natural rubber, polysulfide rubber, silicone rubber, styrene-butadiene rubber, chlorobutyl rubber, nitrile rubber, polyurethane rubber, or various conductive rubbers modified from ethylene-propylene-diene rubber, and the end of the third structure 1213 abutting against the second transparent piece 13 can be a non-conductive rubber, such as natural rubber, polysulfide rubber, silicone rubber, styrene-butadiene rubber, chlorobutyl rubber, nitrile rubber, polyurethane rubber, or various conductive rubbers modified from ethylene-propylene-diene rubber. Thus, the end of the third structure 1213 connected to the second structure 1212 can conduct electricity to prevent electromagnetic waves outside the military helicopter from entering the interior of the military helicopter, and the end of the third structure 1213 abutting against the second transparent piece 13 can satisfy the deformation when being pressed.

[0049] The strength of the second structure 1212 mentioned above is greater than that of either the first structure 1211 or the third structure 1213. The greater the strength, the stronger the structure's resistance to fracture and bending. In other words, the deformation capacity of either the first structure 1211 or the third structure 1213 is greater than that of the second structure 1212. The first structure 1211 directly contacts the first transparent part 11, and the third structure 1213 directly contacts the second transparent part 13. The second structure 1212 connects the first structure 1211 and the third structure 1213 respectively. Thus, the existence of the second structure 1212 can ensure the strength of the first part 121. The existence of the first structure 1211 and the third structure 1213 can avoid the probability of the first transparent part 11 and the second transparent part 13 being scratched. At the same time, it can make the first part 121 more firmly connected to the first transparent part 11 and adapt to the deformation when it comes into contact with the second transparent part 13, thereby making the contact tighter.

[0050] In some embodiments, see Figure 3 and Figure 4 As shown, the ring structure forming the observation port 111 includes: a first annular surface, a second annular surface, and an inner wall 112 of the observation port connecting the first annular surface and the second annular surface respectively; the second structure 1212 includes: a first conductive element 12121 and a second conductive element 12122. The first conductive element 12121 is connected to the side of the first structure 1211 away from the first annular surface and extends into the observation port 111. The second conductive element 12122 is connected to the side of the first structure 1211 away from the second annular surface and extends linearly in the direction of the observation port 111. The first conductive element 12121 located in the observation port 111 and the second conductive element 12122 corresponding to the observation port 111 are connected by a first structural adhesive, and the first conductive element 12121 and the second conductive element 12122 located on both sides of the first structural adhesive are covered by one end of the third structure 1213.

[0051] Specifically, the thickness of the first structural adhesive mentioned above can range from 0.5 to 10 millimeters (i.e., Figure 3 or Figure 4 The thickness shown from top to bottom), the width of the cross-section can range from 5 to 50 millimeters (i.e., Figure 3 or Figure 4 (The width shown is from left to right). The first structural adhesive mentioned above can be made of materials such as acrylic adhesive, epoxy resin adhesive, or polyurethane adhesive.

[0052] In the embodiment, the first conductive member 12121 and the second conductive member 12122 of the second structure 1212 are independent, so that the first structure 1211 can be connected in steps, thereby ensuring better connection between each part of the second structure 1212 and the first structure 1211, and the second structure 1212 is simple in structure, so that the second structure 1212 is convenient to manufacture.

[0053] In some embodiments, referring to Figure 3 and Figure 4 , a part of the first conductive member 12121 in the observation port 111 is parallel to the side of the first structure 1211 away from the inner wall 112 of the observation port, and another part is parallel to the second conductive member 12122 corresponding to the observation port 111. The parallel arrangement makes the structural strength of the second structure 1212 and the first structure 1211 consistent, so as to improve the structural strength of the first part 121 and reduce the probability of breaking the first part 121 when the sealing structure 12 is extruded to protrude from the observation port 111.

[0054] In some embodiments, referring to Figure 3 and Figure 4 , the other end of the third structure 1213 is inclined to extend, and the included angle a defined between the two ends of the third structure 1213 close to one side of the second transparent member 13 is obtuse; and / or, the thickness of the other end of the third structure 1213 gradually decreases towards the second transparent member 13.

[0055] Specifically, the other end of the third structure 1213 in the above is inclined to extend, and the included angle a defined between the two ends of the third structure 1213 close to one side of the second transparent member 13 is obtuse, that is, the other end of the third structure 1213 gradually inclines towards the center of the second transparent member 13. The thickness of the other end of the third structure 1213 in the above gradually decreases towards the second transparent member 13, in other words, the closer to the second transparent member 13, the smaller the thickness of the other end of the third structure 1213.

[0056] In the embodiment, the other end of the third structure 1213 is gradually inclined towards the central position of the second transparent piece 13, so that the deformation of the other end of the third structure 1213 is relatively easy in the process of being pressed by the second transparent piece 13, and compared with the way of gradually inclining the other end of the third structure 1213 away from the central position of the second transparent piece 13, the inclination way of the application can reduce the probability of the other end of the third structure 1213 breaking from the third structure 1213 in the process of being pressed. In addition, the thickness of the other end of the third structure 1213 gradually decreases towards the direction of the second transparent piece 13, so that the deformation of the other end of the third structure 1213 is easier in the process of being pressed by the second transparent piece 13.

[0057] In some embodiments, referring to FIGS. 12A and 12B, the second part 122 comprises a fourth structure 1221 and a fifth structure 1222. The fourth structure 1221 covers a ring-shaped edge of the second transparent piece 13. The fifth structure 1222 covers a surface of the fourth structure 1221 away from the second transparent piece 13 and extends linearly towards the direction corresponding to the first structure 1211. The fifth structure 1222 abuts against one end of the third structure 1213 near the annular surface of the third structure 1213. The strength of the fifth structure 1222 is greater than that of the fourth structure 1221. Figure 3 Figure 4 In some embodiments, referring to FIGS. 12A and 12B, the second part 122 comprises a fourth structure 1221 and a fifth structure 1222. The fourth structure 1221 covers a ring-shaped edge of the second transparent piece 13. The fifth structure 1222 covers a surface of the fourth structure 1221 away from the second transparent piece 13 and extends linearly towards the direction corresponding to the first structure 1211. The fifth structure 1222 abuts against one end of the third structure 1213 near the annular surface of the third structure 1213. The strength of the fifth structure 1222 is greater than that of the fourth structure 1221.

[0058] Specifically, the fourth structure 1221 in the above-mentioned embodiment covers a ring-shaped edge of the second transparent piece 13. Since the ring-shaped edge of the second transparent piece 13 comprises a third annular surface, a fourth annular surface and a side surface 131 connecting the third annular surface and the fourth annular surface, the fourth structure 1221 has at least a fourth annular recess. The inner contour of the fourth annular recess is consistent with the outer contour of the ring-shaped edge of the second transparent piece 13, so that the ring-shaped edge of the second transparent piece 13 can extend into the fourth annular recess to be covered by the fourth structure 1221.

[0059] The fifth structure 1222 in the above-mentioned embodiment covers a surface of the fourth structure 1221 away from the second transparent piece 13 and extends linearly towards the direction corresponding to the first structure 1211. The fifth structure 1222 abuts against one end of the third structure 1213 near the annular surface of the third structure 1213. That is, the fifth structure 1222 has at least a fifth annular recess. The inner contour of the fifth annular recess is consistent with the outer contour of the side of the fourth structure 1221 away from the second transparent piece 13, so that the side of the fourth structure 1221 away from the second transparent piece 13 can be attached to the inner surface of the fifth annular recess to be covered by the fifth structure 1222. At the same time, the annular surface of the fifth structure 1222 abuts against one end of the third structure 1213.

[0060] ​The fifth structure 1222 has a greater strength than the fourth structure 1221. Greater strength results in greater resistance to fracture and bending. In other words, the fifth structure 1222 has a smaller deformation capacity than the fourth structure 1221. Therefore, the presence of the fifth structure 1222 enhances the strength of the second part 122, while the presence of the fourth structure 1221 reduces the likelihood of scratches on the second transparent part 13. It also makes the connection between the fourth structure 1221 and the second transparent part 13 more secure. It should be noted that the strengths of the two parts of the fifth structure 1222 and the third structure 1213 that abut against each other can be the same or different.

[0061] In some embodiments, see Figure 3 and Figure 4 As shown, a ring edge around the second transparent element 13 includes: a third annular surface, a fourth annular surface, and a side surface 131 connecting the third annular surface and the fourth annular surface respectively; the fifth structure 1222 includes: a third conductive element 12221 and a fourth conductive element 12222. The third conductive element 12221 is connected to the side of the fourth structure 1221 away from the third annular surface and extends linearly in the direction corresponding to the first structure 1211. The fourth conductive element 12222 is connected to the side of the fourth structure 1221 away from the fourth annular surface and extends in the direction corresponding to the first structure 1211. The third conductive element 12221 and the fourth conductive element 12222 corresponding to the first structure 1211 are connected by a second structural adhesive; wherein, one end of the fourth conductive element 12222 abuts against each other.

[0062] Specifically, the second structural adhesive mentioned above can be made of materials such as acrylic adhesive, epoxy resin adhesive, or polyurethane adhesive.

[0063] In this embodiment, the third conductive element 12221 and the fourth conductive element 12222 of the fifth structure 1222 are independent entities, so that the arrangement of covering the fourth structure 1221 can be connected step by step and in a structural manner, so as to ensure that the connection effect between each part of the fifth structure 1222 and the fourth structure 1221 is better. Moreover, the structure of the fifth structure 1222 is simple, which makes the second structure 1212 easy to manufacture.

[0064] In some embodiments, see Figure 1 to 5 and ​ As shown, a portion of the fourth conductive element 12222 is parallel to the surface of the fourth structure 1221 facing away from the side surface 131, and the third conductive element 12221 and the fourth conductive element 12222 are parallel to each other, connected by the second structural adhesive. The parallel arrangement makes the structural strength trends of the fourth structure 1221 and the fifth structure 1222 consistent, thereby improving the structural strength of the second part 122.

[0065] In some embodiments, referring to ​ As shown in the drawings, the electromagnetic shielding observation window 10 comprises:

[0066] A first transparent piece 11, the first transparent piece 11 is provided with an observation opening 111, and the outer surface of the first transparent piece 11 is respectively provided with a hinge 141 and a lock 142 corresponding to the two side edges of the observation opening 111. The structure forming the observation opening 111 comprises a first annular surface, a second annular surface and an observation opening inner wall 112 connecting the first annular surface and the second annular surface respectively. The inner and outer surfaces of the first transparent piece 11 are respectively provided with a conductive layer.

[0067] A second transparent piece 13, the second transparent piece 13 is arranged on the outer surface side of the first transparent piece 11, one end of the second transparent piece 13 is connected with the hinge 141 so that the second transparent piece 13 can rotate relative to the first transparent piece 11, a first screw is connected with the lock 142 and the first transparent piece 11 respectively and a second screw is connected with the lock 142 and the other end of the second transparent piece 13 respectively to realize the connection between the second transparent piece 13 and the first transparent piece 11. After the second transparent piece 13 is connected with the first transparent piece 11, the orthographic projection of the second transparent piece 13 to the first transparent piece 11 is located in the observation opening 111, and the edge of the second transparent piece 13 on one side comprises a third annular surface, a fourth annular surface and a side surface 131 connecting the third annular surface and the fourth annular surface respectively. The inner and outer surfaces of the second transparent piece 13 are respectively provided with a conductive layer.

[0068] The sealing structure 12 comprises a first part 121 and a second part 122, the first part 121 covers a structure formed on the first transparent piece 11 and extends annularly into the observation port 111, and the second part 122 covers a structure formed on the second transparent piece 13 and abuts against a surface of the first part 121 close to the second transparent piece 13. The first part 121 comprises a first structure 1211, a second structure 1212 and a third structure 1213, the first structure 1211 covers a structure formed on the first transparent piece 11, i.e. covers the first annular surface, the second annular surface and the observation port inner wall 112 connecting the first annular surface and the second annular surface. The second structure 1212 covers a surface of the first structure 1211 away from the first transparent piece 11 and extends towards the observation port 111, the second structure 1212 comprises a first conductive piece 12121 and a second conductive piece 12122, the first conductive piece 12121 is connected to a side of the first structure 1211 away from the first annular surface and extends into the observation port 111, the second conductive piece 12122 is connected to a side of the first structure 1211 away from the second annular surface and extends linearly towards the observation port 111, the first conductive piece 12121 in the observation port 111 and the second conductive piece 12122 corresponding to the observation port 111 are connected by the first structure adhesive, a part of the first conductive piece 12121 in the observation port 111 is parallel to a side of the first structure 1211 away from the observation port inner wall 112, and another part is parallel to the second conductive piece 12122 corresponding to the observation port 111. One end of the third structure 1213 covers the first conductive piece 12121 and the second conductive piece 12122 on both sides of the first structure adhesive, the other end of the third structure 1213 extends obliquely from the observation port 111 to a position close to the center of the second transparent piece 13 to abut against a surface of the second transparent piece 13 close to the observation port 111, and the thickness of the other end of the third structure 1213 gradually decreases towards the second transparent piece 13. The strength of the second structure 1212 is greater than that of any one of the first structure 1211 and the third structure 1213.The second part 122 comprises a fourth structure 1221 and a fifth structure 1222, the fourth structure 1221 covers a ring edge of the second transparent piece 13, the fifth structure 1222 covers a surface of the fourth structure 1221 away from the second transparent piece 13 and extends linearly in a direction corresponding to the first structure 1211, and the fifth structure 1222 abuts with one end of the third structure 1213 near the ring surface of the third structure 1213, the fifth structure 1222 comprises a third conductive piece 12221 and a fourth conductive piece 12222, the third conductive piece 12221 is connected with a side of the fourth structure 1221 away from the third ring surface and extends linearly in a direction corresponding to the first structure 1211, the fourth conductive piece 12222 is connected with a side of the fourth structure 1221 away from the fourth ring surface and extends in a direction corresponding to the second structure 1212, the third conductive piece 12221 and the fourth conductive piece 12222 corresponding to the second structure 1212 are connected through the second structure glue, the fourth conductive piece 12222 is parallel to the surface of the fourth structure 1221 away from the side surface 131, and the third conductive piece 12221 and the fourth conductive piece 12222 connected through the second structure glue are parallel to each other. The strength of the fifth structure 1222 is greater than the strength of the fourth structure 1221.

[0069] In the embodiment, the hinge 141 and the lock 142 are used to realize the closure of the second transparent piece 13 to the observation port 111 of the first transparent piece 11, and meet the requirements of the electromagnetic shielding observation window 10 against rain and against shaking, and the conductive performance of the conductive layer outside the first transparent piece 11 and the second transparent piece 13 and the sealing structure 12 between the first transparent piece 11 and the second transparent piece 13 can meet the electromagnetic shielding requirements, and when the task is over, the lock 142 of the second transparent piece 13 can be opened to realize the transmission of repair tools through the observation port 111.

[0070] The second aspect

[0071] Based on the same inventive concept, the application provides a military helicopter. The military helicopter comprises a helicopter body and the electromagnetic shielding observation window 10 of any one of the above, the helicopter body is provided with a window, and the first transparent piece 11 of the electromagnetic shielding observation window 10 is fixed to the window and closes the window.

[0072] In the embodiment, the electromagnetic shielding observation window 10 is arranged on the window and seals the window, so that the personnel inside the helicopter body can observe the outside of the helicopter body through the first transparent piece 11 or the second transparent piece 13 of the electromagnetic shielding observation window 10, and the conductive layer outside the first transparent piece 11 and the second transparent piece 13 and the sealing structure 12 between the first transparent piece 11 and the second transparent piece 13 can shield the electromagnetic waves outside the military helicopter body to avoid the electromagnetic waves outside the military helicopter passing through the electromagnetic shielding observation window 10, thereby avoiding the personnel and electronic devices inside the military helicopter from being in danger of electromagnetic wave damage.

[0073] It should be noted that the electromagnetic shielding observation window in the military helicopter provided by the embodiment of the present application is similar to the description of the electromagnetic shielding observation window in the above embodiment, and has similar beneficial effects as the electromagnetic shielding observation window in the above embodiment. For technical details not disclosed in the military helicopter embodiment of the present application, please refer to the description of the electromagnetic shielding observation window embodiment in the present application for understanding, which will not be repeated here.

[0074] In the description of the present application, it should be understood that the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features.

[0075] In addition, in the description of the present application, it should be understood that the terms "vertical", "horizontal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the present application.

[0076] In addition, in the present application, unless otherwise explicitly specified and limited, the terms "connection", "connection" and the like should be understood in a broad sense, for example, it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited, the specific meaning of the above terms in the present application can be understood according to the specific circumstances by those skilled in the art.

[0077] Finally, it should be noted 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 to 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.

Claims

1. An electromagnetic shielded viewing window, characterized by, The electromagnetic shielding observation window comprises: a first transparent piece with an observation opening; a sealing structure covering at least a structure surrounding the observation opening on the first transparent piece and extending annularly into the observation opening and then extending out of the observation opening, the sealing structure being capable of conducting electricity; a second transparent piece arranged on the side of the first transparent piece with the sealing structure extending out of the observation opening, one end of the second transparent piece being rotatably connected to one side edge of the observation opening so that the other end of the second transparent piece can be rotated towards the observation opening and then detachably connected to the other side edge of the observation opening, and when the other end of the second transparent piece is connected to the other side edge of the observation opening, the second transparent piece presses the sealing structure extending out of the observation opening; wherein the first transparent piece and the second transparent piece are respectively provided with a conductive layer corresponding to one side of the outer surface of the electromagnetic shielding observation window, or the first transparent piece and the second transparent piece are both provided with a conductive layer corresponding to both sides of the inner and outer surfaces of the electromagnetic shielding observation window; the sealing structure comprises a first part and a second part, the first part covering the structure surrounding the observation opening on the first transparent piece and extending annularly into the observation opening and then extending out of the observation opening, and the second part covering a ring edge of the second transparent piece and abutting against a ring surface of the first part close to the second transparent piece; the first part comprises a first structure, a second structure and a third structure, the first structure covering the structure surrounding the observation opening on the first transparent piece, the second structure covering the surface of the first structure away from the first transparent piece and extending towards the observation opening, and one end of the third structure covering a part of the second structure corresponding to the observation opening, and the other end of the third structure extending out of the observation opening to abut against the surface of the second transparent piece close to the observation opening; wherein the strength of the second structure is greater than that of any one of the first structure and the third structure; the structure surrounding the observation opening comprises a first annular surface, a second annular surface and an observation opening inner wall connecting the first annular surface and the second annular surface; the second structure comprises a first conductive piece and a second conductive piece, the first conductive piece being connected to the side of the first structure away from the first annular surface and extending into the observation opening, and the second conductive piece being connected to the side of the first structure away from the second annular surface and extending linearly towards the observation opening, the first conductive piece in the observation opening and the second conductive piece corresponding to the observation opening being connected by the first structure adhesive, and the first conductive piece and the second conductive piece on both sides of the first structure adhesive being covered by one end of the third structure.

2. The electromagnetic shielding observation window according to claim 1, wherein a part of the first conductive piece in the observation opening is parallel to the side of the first structure away from the observation opening inner wall, and the other part is parallel to the second conductive piece corresponding to the observation opening. ​ 3. The electromagnetic shielding observation window according to claim 1, wherein: an end of the third structure is obliquely extended, and an included angle defined between the end of the third structure and a side of the second transparent member is obtuse; and / or, a thickness of the other end of the third structure gradually decreases towards the second transparent member.

4. The electromagnetic shielding observation window according to any one of claims 1 to 3, wherein: the second portion comprises a fourth structure and a fifth structure, the fourth structure covers a periphery of the second transparent member, the fifth structure covers a surface of the fourth structure away from the second transparent member and extends linearly towards the first structure, and the fifth structure abuts against an end of the third structure near a ring surface of the third structure. wherein the fifth structure has a greater strength than the fourth structure.

5. The electromagnetic shielding observation window according to claim 4, wherein: a periphery of the second transparent member comprises a third ring surface, a fourth ring surface, and a side surface connecting the third ring surface and the fourth ring surface; the fifth structure comprises a third conductive member and a fourth conductive member, the third conductive member is connected to a side of the fourth structure away from the third ring surface and extends linearly towards the first structure, the fourth conductive member is connected to a side of the fourth structure away from the fourth ring surface and extends towards the first structure, and the third conductive member and the fourth conductive member are connected by a second structural adhesive. wherein the fourth conductive member abuts against an end of the third structure.

6. The electromagnetic shielding observation window according to claim 5, wherein: a portion of the fourth conductive member is parallel to a surface of the fourth structure away from the side surface, and the third conductive member and the fourth conductive member connected by the second structural adhesive are parallel to each other.

7. A military helicopter characterized in that, comprising: a helicopter body having a window; and, the electromagnetic shielding observation window according to any one of claims 1 to 6, wherein the first transparent member is fixed to the window and closes the window.

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