Transparent screen display device

Abstract

The utility model discloses a transparent screen display device which comprises a protective mask, an air tap is installed on the protective mask, a communication main control computer is connected to the air tap located in the protective mask in a clamped mode, and an air quantity indicator lamp is arranged on the communication main control computer and used for observing the air quantity of an air bottle. A first positioning ring is arranged on the outer edge of the protective mask, a first fixing frame is arranged on one side of the first positioning ring, and the camera is installed at one end of the first fixing frame, so that the installation problem of the camera is solved, and the installation position of the heat insulation head sleeve is ensured; a second positioning ring is arranged on the inner edge of the protective mask, a grating diffraction waveguide screen is clamped to the second positioning ring, the light transmittance of the grating diffraction waveguide screen is higher, the eye movement range is larger, the camera and the communication main control computer are connected through a connecting line, the connecting line enters from a connecting pipe of the air nozzle shell, punching and wire inlet are not needed for the protective mask, and the working efficiency is improved. The air tightness of the mask in use is not damaged, and the visual delay of the communication main control computer is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fire-fighting equipment, and particularly relates to a transparent screen display device. Background Art

[0002] In modern fire-fighting and rescue scenes, it is usually a complex environment such as thick smoke, heavy fog or darkness, which brings great difficulties to fire-fighting and rescue operations, resulting in the inability to quickly find trapped people in the rescue scene and the difficulty in detecting hidden fire points. The thick smoke or heavy fog environment at the fire scene will block the line of sight of firefighters. However, a thermal infrared detector can penetrate the thick smoke, heavy fog or dark environment to see the surrounding environmental conditions and timely detect trapped people or hidden fire points. Therefore, equipping firefighters with an infrared thermal imager can greatly help firefighters in rescue and fire-fighting operations. However, the existing infrared thermal imagers still have some defects:

[0003] First, the infrared thermal imagers currently equipped by firefighters are mainly divided into two types. One is a handheld thermal imager, and the other is an eyepiece-type thermal imager. Among them, the handheld thermal imager needs to be used with one hand or both hands, which is not convenient to carry, and firefighters cannot free their hands for demolition and rescue during the rescue process; while the eyepiece-type thermal imager is installed in the lower half of the protective mask. To avoid blocking the line of sight, the picture on the display screen of the thermal imager is small, and firefighters need to look down to view the picture, which is prone to visual fatigue.

[0004] Second, firefighters will also be equipped with an air respirator during rescue, and the air respirator is usually equipped with a HUD (head-up display) device to observe the remaining air volume in the air cylinder in real time. However, the HUD device also needs to be installed in the lower half of the protective mask, which means that if the HUD device needs to be installed, firefighters can only choose a handheld thermal imager.

[0005] Third, firefighters need to wear a heat-insulating headgear before wearing the protective mask to protect the back of the head of firefighters. However, the facial position of the heat-insulating headgear is exposed and mainly relies on the mask thermal imager for protection. To prevent the heat wave at the fire scene from drilling into the gap between the heat-insulating headgear and the protective mask and scalding the head of firefighters, a positioning ring is usually set on the outer periphery of the protective mask, and the heat-insulating headgear can be buckled on the positioning ring to wrap the gap for comprehensive protection. However, since the eyepiece-type thermal imager is also equipped with an infrared camera, the existing infrared camera can only be installed on the positioning ring, which results in the inability to buckle the heat-insulating headgear at the position of the infrared camera. Therefore, there is a risk of scalding the head of firefighters.

[0006] IV. Existing infrared cameras and eyepiece thermal imagers are usually connected wirelessly. However, due to the poor environment in the fire scene, the signal is easily interfered, resulting in a visual delay of the eyepiece thermal imager greater than 500 ms. It is difficult to synchronize the viewing screen of the eyepiece thermal imager with the shooting screen of the infrared camera, and there is an obvious sense of lag. Summary of the Invention

[0007] The purpose of the present utility model is to provide a transparent screen display device to solve the technical problems in the above-mentioned background technology.

[0008] To achieve this purpose, the present utility model adopts the following technical solutions:

[0009] A transparent screen display device includes a protective mask. The protective mask is provided with an installation hole, and an air nozzle is installed at the installation hole. A communication main control machine is clamped on the air nozzle inside the protective mask. A gas volume indicator is arranged on the communication main control machine for observing the air volume of the gas cylinder. A first positioning ring is arranged on the outer edge of the protective mask. A first fixing frame is arranged on one side of the first positioning ring, and a camera is installed at one end of the first fixing frame. A second positioning ring is arranged on the inner edge of the protective mask, and a grating diffraction waveguide screen is clamped on the second positioning ring. The camera and the communication main control machine are connected by a connecting wire.

[0010] As a preferred scheme of the transparent screen display device, an optical machine is arranged on one side of the grating diffraction waveguide screen, and the optical machine is connected with the communication main control machine. A height adjusting device is further arranged on the upper part of the grating diffraction waveguide screen, and the height adjusting device is installed on the second positioning ring.

[0011] As a preferred scheme of the transparent screen display device, the height adjusting device includes a first adjusting plate and a second adjusting plate installed on both sides of the upper part of the grating diffraction waveguide screen. Adjusting grooves are formed on the opposite sides of the first adjusting plate and the second adjusting plate. Adjusting blocks are arranged in the adjusting grooves. Adjusting columns are arranged on the inner side of the upper part of the second positioning ring. First positioning grooves are formed on both sides of the adjusting column, and the length of the first positioning groove is longer than that of the adjusting block. The adjusting column is inserted into the adjusting groove, and the adjusting block is slidably connected with the first positioning groove to adjust the height of the grating diffraction waveguide screen. One end of the first adjusting plate is threadedly connected with an adjusting handle, and one end of the adjusting handle is located in the adjusting groove and abuts against the adjusting column.

[0012] As a preferred scheme of the transparent screen display device, a second positioning groove is formed at one end of the first adjusting plate away from the adjusting handle, and a positioning plate is further arranged on the inner side of the upper part of the second positioning ring, and the positioning plate is in clearance fit with the second positioning groove.

[0013] As a preferred embodiment of the transparent screen display device, the first fixing frame includes an integrally formed first connecting portion, an inner concave portion, an outer concave portion and a second connecting portion. A first mounting seat is provided on the inner side of the first positioning ring. The first connecting portion is threadedly connected to the first mounting seat through a fastener. The inner concave portion is provided with a first fixing groove, and the first fixing groove fits with the first positioning ring. The outer concave portion is provided with a second fixing groove, and the direction of the second fixing groove is opposite to that of the first fixing groove, providing a buckling position for the heat insulation headgear. A second mounting seat is provided on one side of the camera, and the second connecting portion is threadedly connected to the second mounting seat through a fastener.

[0014] As a preferred embodiment of the transparent screen display device, the air nozzle includes an air nozzle housing and an air nozzle body. A connecting pipe is provided below the air nozzle housing. An air nozzle wire passing hole is provided on one side of the air nozzle body. The connecting wire of the camera is connected to the communication main control machine through the connecting pipe and the air nozzle wire passing hole in sequence.

[0015] As a preferred embodiment of the transparent screen display device, a second connecting groove is formed above the air nozzle body, and a connecting block is further provided in the middle of the notch of the second connecting groove. A clamping block is provided below the communication main control machine, and the clamping block is buckled on the connecting block. Positioning blocks are further provided on both sides of the communication main control machine where the communication main control machine is located, and the positioning blocks are inserted into the second connecting groove for positioning.

[0016] As a preferred embodiment of the transparent screen display device, a first mounting opening is formed above the air nozzle housing, and a mounting block is mounted in the first mounting opening. A positioning strip is mounted below the mounting block, and the positioning strip is made of an elastic material. An air pipe connecting port is formed at the front end of the air nozzle body, and second mounting openings are formed on both sides of the air pipe connecting port. The positioning strip passes through the second mounting openings on both sides and enters the inside of the air pipe connecting port to clamp the air pipe.

[0017] As a preferred embodiment of the transparent screen display device, the second positioning ring is made of an elastic material, and the second positioning ring is tightly fitted with the inner wall of the protective face mask under the action of an outward tension.

[0018] As a preferred embodiment of the transparent screen display device, the air volume indicator is arranged inside the communication main control machine, and a partner indicator is further arranged outside the communication main control machine.

[0019] The beneficial effects of the present utility model:

[0020] (1) The transparent screen display device of the present utility model uses a grating diffraction waveguide screen. The light transmittance of the grating diffraction waveguide screen is as high as over 80%, which has the advantages of higher light transmittance, larger eye movement range, higher mass production feasibility and yield. The usage status of each equipment and the situation of the surrounding environment are displayed through the grating diffraction waveguide screen. The display screen is large, conforming to the natural eye - using habits of the human body, and the comfort is better than that of an eyepiece.

[0021] (2) The present utility model integrates the original HUD function of the air - breathing face mask into the communication main control unit. It can not only observe the remaining gas volume in the gas cylinder through the gas volume indicator light on the communication main control unit, but also has a lighter overall weight.

[0022] (3) The present utility model is adaptively designed with a first fixing bracket according to the overall structure of the transparent screen display device. The camera can be installed on the first fixing bracket, which not only solves the installation problem of the camera but also ensures the installation position of the heat - insulating headgear.

[0023] (4) The camera of the present utility model is connected to the communication main control unit by wire. The connecting wire enters from the connecting pipe of the gas nozzle housing, without the need to punch holes in the protective face mask for wire entry, thus not damaging the airtightness of the face mask during use and reducing the visual delay of the communication main control unit. The visual delay is less than 100 ms, the video picture responds more quickly, and there is no lag or trailing feeling. Brief Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments of the present utility model will be briefly introduced below. Obviously, the following - described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0025] Figure 1 It is a front - view structural schematic diagram of the transparent screen display device according to an embodiment of the present utility model.

[0026] Figure 2 It is a back - view structural schematic diagram of the transparent screen display device according to an embodiment of the present utility model.

[0027] Figure 3 It is a disassembled structural schematic diagram of the transparent screen display device according to an embodiment of the present utility model.

[0028] Figure 4 It is a structural schematic diagram of the first fixing bracket according to an embodiment of the present utility model.

[0029] Figure 5 It is a disassembled structural schematic diagram of the height - adjusting device according to an embodiment of the present utility model.

[0030] Figure 6 It is a schematic structural diagram of a communication main control machine according to an embodiment of the present utility model.

[0031] Figure 7 It is a schematic exploded view of an air nozzle according to an embodiment of the present utility model.

[0032] In the figure:

[0033] 1. Protective mask; 2. Air nozzle; 21. Air nozzle housing; 22. Air nozzle body; 23. Connecting pipe; 24. Air nozzle wire passing hole; 25. Second connection groove; 26. Connecting block; 27. Mounting block; 28. Positioning strip; 29. Air pipe connection port; 3. Communication main control machine; 31. Gas volume indicator light; 32. Partner indicator light; 33. Clamping block; 34. Positioning block; 4. First positioning ring; 41. First mounting seat; 5. First fixing frame; 51. First connection part; 52. Inner concave part; 53. Outer concave part; 54. Second connection part; 6. Camera; 61. Second mounting seat; 7. Second positioning ring; 8. Grating diffraction waveguide screen; 9. Connecting wire; 10. Optical engine; 11. Height adjusting device; 111. First adjusting plate; 112. Second adjusting plate; 113. Adjusting groove; 114. Adjusting block; 115. Adjusting handle; 116. Second positioning groove; 117. Adjusting column; 118. First positioning groove; 119. Positioning plate. Detailed implementation manners

[0034] The technical solution of the present utility model will be further described below with reference to the accompanying drawings and through specific implementation manners.

[0035] Among them, the accompanying drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation of this patent; in order to better illustrate the embodiments of the present utility model, some components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the actual size of the product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted.

[0036] In the accompanying drawings of the embodiments of the present utility model, the same or similar reference numerals correspond to the same or similar components; in the description of the present utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so the terms describing the positional relationship in the accompanying drawings are only for illustrative purposes and should not be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0037] In the description of the present utility model, unless otherwise clearly specified and defined, if terms such as "connection" are used to indicate the connection relationship between components, such terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated as a whole; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] As Figures 1 to 3 shown, the present utility model provides a transparent screen display device, including a protective mask 1. The protective mask 1 is provided with an installation hole, and a gas nozzle 2 is installed at the installation hole. A communication main control unit 3 is clamped on the gas nozzle 2 inside the protective mask 1. The communication main control unit 3 integrates the original HUD functions. A gas volume indicator 31 is arranged inside the communication main control unit 3, and a partner indicator 32 is also arranged outside. The gas volume indicator 31 is convenient for the wearer to observe the air volume of his own gas cylinder, and the partner indicator 32 is convenient for other firefighters to observe the remaining air volume of the wearer's gas cylinder.

[0039] It should be noted that the inside of the communication main control unit 3 described in this embodiment refers to the side where the wearer wears, and the wearer can directly see the gas volume indicator 31. The outside of the communication main control unit 3 refers to the side where the wearer faces, and other firefighters can directly see the partner indicator 32 of the wearer, so as to understand the remaining air volume of the wearer's gas cylinder.

[0040] To solve the installation problem of the camera 6, a first positioning ring 4 is arranged on the outer edge of the protective mask 1 in this embodiment. A first fixing frame 5 is arranged on one side of the first positioning ring 4, and the camera 6 is installed at one end of the first fixing frame 5.

[0041] As Figure 4As shown in the figure, the first fixing bracket 5 includes an integrally formed first connecting portion 51, an inner concave portion 52, an outer concave portion 53, and a second connecting portion 54. A first mounting seat 41 is provided inside the first positioning ring 4. The first connecting portion 51 is threadedly connected to the first mounting seat 41 through a fastener. The inner concave portion 52 is provided with a first fixing groove, and the first fixing groove fits with the first positioning ring 4, which can position the first fixing bracket 5 and prevent the camera 6 from shaking during use. The outer concave portion 53 is provided with a second fixing groove, and the direction of the second fixing groove is opposite to that of the first fixing groove. The second fixing groove provides a buckling position for the heat insulation head cover, so that the heat insulation head cover can be buckled in the second fixing groove to wrap the gap of the protective mask 1 for comprehensive protection and avoid the risk of scalding the head of the firefighter. A second mounting seat 61 is provided on one side of the camera 6. The second connecting portion 54 is threadedly connected to the second mounting seat 61 through a fastener. The structural design of the first fixing bracket 5 not only solves the installation problem of the camera 6 but also ensures the installation position of the heat insulation head cover.

[0042] At the same time, a second positioning ring 7 is provided on the inner edge of the protective mask 1 in this embodiment. The second positioning ring 7 is preferably made of an elastic material, so that the second positioning ring 7 has an outward tension. Under the action of the outward tension, the second positioning ring 7 will be tightly fitted with the inner wall of the protective mask 1 to fix it. A grating diffraction waveguide screen 8 is also clamped on the second positioning ring 7. An optical engine 10 is provided on one side of the grating diffraction waveguide screen 8, and the optical engine 10 is connected to the communication main control unit 3. The transparent screen display device in this embodiment uses a grating diffraction waveguide screen 8, and the light transmittance of the grating diffraction waveguide screen 8 is as high as more than 80%. It has the advantages of higher light transmittance, larger eye movement range, higher mass production and yield. After the optical engine 10 is connected to the communication main control unit 3, it can display the usage status of each equipment and the situation of the surrounding environment on the grating diffraction waveguide screen 8. The display screen is large, conforms to the natural eye use habit of the human body, and has a better comfort than the eyepiece.

[0043] To facilitate the position adjustment of the grating diffraction waveguide screen 8, a height adjustment device 11 is further provided on the upper part of the grating diffraction waveguide screen 8 in this embodiment. The height adjustment device 11 is installed on the second positioning ring 7.

[0044] As Figure 5As shown in the figure, the height adjustment device 11 specifically includes a first adjustment plate 111 and a second adjustment plate 112 installed on both sides of the upper part of the grating diffraction waveguide screen 8. On the opposite sides of the first adjustment plate 111 and the second adjustment plate 112, adjustment grooves 113 are provided. Adjustment blocks 114 are arranged in the adjustment grooves 113. On the inner side of the upper part of the second positioning ring 7, an adjustment column 117 is provided. On both sides of the adjustment column 117, first positioning grooves 118 are provided. The length of the first positioning grooves 118 is longer than that of the adjustment blocks 114. The adjustment column 117 is inserted into the adjustment groove 113, and the adjustment blocks 114 are slidably connected with the first positioning grooves 118. By pulling the first adjustment plate 111 and the second adjustment plate 112, the wearer can drive the adjustment blocks 114 to slide up and down in the first positioning grooves 118, so as to adjust the height of the grating diffraction waveguide screen 8, which is convenient for the wearer to adjust the position of the grating diffraction waveguide screen 8. At the same time, one end of the first adjustment plate 111 is threadedly connected with an adjustment handle 115. One end of the adjustment handle 115 can be inserted into the adjustment groove 113 and abutted against the adjustment column 117. After the wearer adjusts the position of the grating diffraction waveguide screen 8, the position of the adjustment column 117 can be fixed by rotating the adjustment handle 115.

[0045] To prevent the grating diffraction waveguide screen 8 from shifting in position during the adjustment process, in this embodiment, a second positioning groove 116 is provided at one end of the first adjustment plate 111 away from the adjustment handle 115. A positioning plate 119 is also provided on the inner side of the upper part of the second positioning ring 7. The positioning plate 119 and the second positioning groove 116 are in clearance fit. The grating diffraction waveguide screen 8 will move up and down along a specified direction under the restriction of the positioning plate 119.

[0046] As Figure 7 shown, to solve the problem of visual delay of the transparent screen display device, in this embodiment, the camera 6 and the communication main control unit 3 are connected by wire. Specifically, the air nozzle 2 of this embodiment includes an air nozzle housing 21 and an air nozzle body 22. A connecting pipe 23 is provided below the air nozzle housing 21. An air nozzle wire passing hole 24 is provided on one side of the air nozzle body 22. The connecting wire 9 of the camera 6 is connected to the communication main control unit 3 through the connecting pipe 23 and the air nozzle wire passing hole 24 in sequence. The connecting wire 9 of this embodiment enters from the connecting pipe 23 of the air nozzle housing 21, without punching holes in the protective mask 1 for wire entry, thus not damaging the airtightness of the protective mask 1 in use, and reducing the visual delay of the communication main control unit 3. The visual delay is less than 100 ms, the video picture responds more quickly, and there is no lagging or trailing feeling.

[0047] The camera 6 of this embodiment preferably adopts an infrared thermal imaging and visible light high-definition dual camera, and a switching button is provided on the camera 6. The infrared thermal imaging mode or the visible light high-definition mode can be freely switched through the switching button, so as to solve the problem that firefighters cannot see the surrounding environment clearly in the thick smoke and dark environment of the fire field.

[0048] As Figure 6 shown, a second connection groove 25 is formed above the nozzle body 22 of this embodiment. A connection block 26 is further provided in the middle of the notch of the second connection groove 25. A clamping block 33 is provided below the communication main control machine 3. The clamping block 33 is buckled on the connection block 26 to fix the communication main control machine 3. Positioning blocks 34 are further provided on both sides of the communication main control machine 3 where it is located in the clamping block 33. The positioning blocks 34 are inserted into the second connection groove 25 for positioning to prevent the communication main control machine 3 from shifting.

[0049] A first installation opening is further formed above the nozzle housing 21 of this embodiment. An installation block 27 is installed in the first installation opening. A positioning strip 28 is installed below the installation block 27. The positioning strip 28 is made of an elastic material. An air pipe connection port 29 is formed at the front end of the nozzle body 22. Second installation openings are formed on both sides of the air pipe connection port 29. The positioning strip 28 passes through the second installation openings on both sides and enters the inside of the air pipe connection port 29. Since the positioning strip 28 has elasticity, when the air pipe is inserted into the air pipe connection port 29, the positioning strip 28 can clamp the air pipe for positioning.

[0050] It should be noted that the above specific embodiments are only the preferred embodiments of the present invention and the technical principles applied. Those skilled in the art should understand that various modifications, equivalent replacements, changes, etc. can be made to the present invention. However, as long as these transformations do not deviate from the spirit of the present invention, they should be within the protection scope of the present invention. In addition, some terms used in the description and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A transparent screen display device, characterized in that: The invention comprises a protective mask (1), wherein the protective mask (1) is provided with a mounting hole, a gas nozzle (2) is mounted at the mounting hole, a communication main control unit (3) is clamped on the gas nozzle (2) located inside the protective mask (1), and a gas volume indicator light (31) is arranged on the communication main control unit (3) for observing the air volume of the gas cylinder; a first positioning ring (4) is arranged on the outer edge of the protective mask (1), a first fixing frame (5) is arranged on one side of the first positioning ring (4), a camera (6) is mounted on one end of the first fixing frame (5), a second positioning ring (7) is arranged on the inner edge of the protective mask (1), a grating diffraction waveguide screen (8) is clamped on the second positioning ring (7), and the camera (6) and the communication main control unit (3) are connected via a connecting line (9).

2. The transparent screen display device according to claim 1, characterized in that: An optical machine (10) is provided on one side of the grating diffraction waveguide screen (8), and the optical machine (10) is connected to the communication main control machine (3). A height adjustment device (11) is also provided on the upper part of the grating diffraction waveguide screen (8), and the height adjustment device (11) is installed on the second positioning ring (7).

3. The transparent screen display device according to claim 2, characterized in that: The height adjustment device (11) comprises a first adjustment plate (111) and a second adjustment plate (112) mounted on both sides of the upper part of the grating diffraction waveguide screen (8); an adjustment groove (113) is provided on the opposite side of the first adjustment plate (111) and the second adjustment plate (112); an adjustment block (114) is provided in each of the adjustment grooves (113); an adjustment column (117) is provided on the inner side of the upper part of the second positioning ring (7); and first positioning grooves (118) are provided on both sides of the adjustment column (117). ), the length of the first positioning groove (118) is longer than that of the adjusting block (114), the adjusting column (117) is inserted into the adjusting groove (113), and the adjusting block (114) is slidably connected to the first positioning groove (118) to adjust the height of the grating diffraction waveguide screen (8), one end of the first adjusting plate (111) is threadedly connected to an adjusting handle (115), one end of the adjusting handle (115) is located in the adjusting groove (113) and abuts against the adjusting column (117).

4. The transparent screen display device according to claim 3, characterized in that: A second positioning groove (116) is provided at one end of the first adjustment plate (111) away from the adjustment handle (115), and a positioning plate (119) is also provided on the inner side of the upper part of the second positioning ring (7), and the positioning plate (119) is clearance-matched with the second positioning groove (116).

5. The transparent screen display device according to claim 1, characterized in that: The first fixing frame (5) comprises an integrally formed first connecting portion (51), an inner recessed portion (52), an outer recessed portion (53) and a second connecting portion (54); a first mounting seat (41) is arranged on the inner side of the first positioning ring (4); the first connecting portion (51) is threadedly connected to the first mounting seat (41) via a fastener; the inner recessed portion (52) is provided with a first fixing groove, the first fixing groove is fitted with the first positioning ring (4); the outer recessed portion (53) is provided with a second fixing groove, the second fixing groove is in the opposite direction to the first fixing groove, and provides a buckling position for the heat-insulating head cover; a second mounting seat (61) is arranged on one side of the camera (6); the second connecting portion (54) is threadedly connected to the second mounting seat (61) via a fastener.

6. The transparent screen display device according to claim 1, characterized in that: The air nozzle (2) comprises an air nozzle housing (21) and an air nozzle body (22); a connecting tube (23) is provided below the air nozzle housing (21); a air nozzle wire hole (24) is provided on one side of the air nozzle body (22); and a connecting wire (9) of the camera (6) is connected to the communication host control machine (3) via the connecting tube (23) and the air nozzle wire hole (24) in sequence.

7. The transparent screen display device according to claim 6, characterized in that: A second connecting groove (25) is provided above the air nozzle body (22), a connecting block (26) is also provided in the middle of the groove of the second connecting groove (25), a clamping block (33) is provided below the communication host control machine (3), the clamping block (33) is buckled on the connecting block (26), and the communication host control machine (3) is also provided with positioning blocks (34) on both sides of the clamping block (33), and the positioning blocks (34) are inserted into the second connecting groove (25) for positioning.

8. The transparent screen display device according to claim 7, characterized in that: A first mounting opening is provided on the top of the air nozzle housing (21), a mounting block (27) is installed on the first mounting opening, a positioning strip (28) is installed below the mounting block (27), and the positioning strip (28) is made of elastic material. An air pipe connecting opening (29) is provided at the front end of the air nozzle body (22), and second mounting openings are provided on both sides of the air pipe connecting opening (29), and the positioning strip (28) passes through the second mounting openings on both sides and enters the interior of the air pipe connecting opening (29) to clamp the air pipe.

9. The transparent screen display device according to claim 1, characterized in that: The second positioning ring (7) is made of elastic material, and the second positioning ring (7) is tightly matched with the inner wall of the protective mask (1) under the action of outward tension.

10. The transparent screen display device according to claim 1, characterized in that: The gas volume indicator light (31) is arranged on the inner side of the communication main control machine (3), and a partner indicator light (32) is also arranged on the outer side of the communication main control machine (3).

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