Display device with impact-resistant explosion-proof protection function

Abstract

The invention relates to the technical field of anti-explosion controllers, in particular to a display device with an anti-impact anti-explosion protection function, which comprises an anti-explosion rear shell and an anti-explosion panel, a sealed anti-explosion cavity is formed between the anti-explosion rear shell and the anti-explosion panel, a liquid crystal screen is arranged on the anti-explosion panel, the liquid crystal screen is connected with a touch screen and window glass, and the anti-explosion panel is connected with the touch screen and the window glass. A glass body of the window glass is explosion-proof glass, due to the fact that the window glass is thick and heavy, a large gap needs to be reserved in the installation process so that it can be guaranteed that the position of the window glass can be adjusted, meanwhile, a large glue solution flowing gap can be formed, a thick buffer layer can be formed after glue injection is completed, 6101 type epoxy resin glue is selected as the glue solution, and the glass body is not damaged. The window glass has low initial viscosity and high aging resistance after curing, and in the mounting process, the gap between the window glass and the window glass mounting groove is filled with the supporting framework, so that the position of the window glass is controlled.

Description

Technical Field

[0001] This invention relates to the field of explosion-proof controller technology, and in particular to a display device with impact-resistant and explosion-proof protection functions. Background Technology

[0002] Display devices are commonly used interactive equipment in industry. They are mainly divided into one-way display monitors and industrial control computers that can perform human-computer interaction. For ease of operation, existing industrial control computers use touch screen operation, including LCD screens and touch screens. Information is displayed through the LCD screen and operated through the touch screen. To improve service life, the touch screen is connected to a viewing window, which is made of tempered glass.

[0003] To improve impact and explosion-proof performance, those skilled in the art thicken the viewing window glass, which can effectively improve the impact and explosion-proof effect. However, due to the increase in the thickness of the viewing window glass, the touch sensitivity and accuracy decrease, and the response delay increases. To solve this technical problem, those skilled in the art laminate a high-strength transparent substrate to the outside of the viewing window glass and optimize the bonding surface to avoid the introduction of air bubbles. After installation, the algorithm is used for compensation to improve sensitivity.

[0004] Because the window glass is thicker and heavier, a larger gap needs to be left during installation, resulting in poor installation accuracy and reduced sealing effect. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a display device with impact-resistant and explosion-proof protection functions.

[0006] This invention is achieved through the following technical solution: A display device with impact-resistant and explosion-proof protection functions, comprising an explosion-proof rear shell and an explosion-proof panel, wherein a sealed explosion-proof cavity is formed between the explosion-proof rear shell and the explosion-proof panel; an LCD screen is disposed on the explosion-proof panel; the LCD screen is connected to a touch screen and a viewing window glass; the main body of the viewing window glass is explosion-proof glass; an LCD screen fixing plate is also disposed inside the explosion-proof panel; an LCD screen receiving groove is formed in the middle of the LCD screen fixing plate; a buffer support device is disposed between the edge of the LCD screen fixing plate and the explosion-proof panel; the buffer support device includes an annular glass pressure plate; a buffer pad is disposed between the glass pressure plate and the explosion-proof panel; the outer side of the buffer pad is pressed against the explosion-proof panel; and the inner side of the buffer pad is pressed against the viewing window glass. The explosion-proof panel is provided with a viewing window glass mounting groove, and a second buffer support device is provided between the viewing window glass mounting groove and the viewing window glass. The second buffer support device includes an adhesive film layer disposed between the viewing window glass mounting groove and the viewing window glass, and the adhesive film layer is connected to a thickness control device. The thickness control device includes adhesive grooves disposed on the side and bottom of the window glass mounting groove. The adhesive grooves include vertical grooves evenly distributed on the side of the glass mounting groove and horizontal grooves evenly distributed on the bottom of the window glass mounting groove. The vertical grooves and the horizontal grooves are connected. An adhesive distribution groove is disposed between the upper ends of each vertical groove. An adhesive collection device is disposed at the end of the horizontal groove. A support frame is also disposed inside the window glass mounting groove.

[0007] Furthermore, the support frame includes a metal mesh, with vertical support ribs formed between two adjacent vertical grooves and horizontal support ribs formed between two adjacent horizontal grooves. The aperture value of the metal mesh is greater than the width value of the vertical support ribs, and the aperture value of the metal mesh is greater than the width value of the horizontal support ribs.

[0008] Furthermore, it also includes an explosion-proof keyboard, which is connected to the LCD screen via an explosion-proof cable, and the explosion-proof cable is connected to the explosion-proof rear housing via an explosion-proof gland.

[0009] Furthermore, the explosion-proof panel is also equipped with an explosion-proof alarm light.

[0010] Furthermore, the sealed explosion-proof cavity is also connected to a pressure control device, which includes heat dissipation fins installed on the explosion-proof rear shell. The heat dissipation fins quickly cool down the cavity, thereby reducing the pressure increase caused by the temperature rise.

[0011] Furthermore, the pressure control device also includes a heat-conducting frame disposed between the LCD screen fixing plate and the bottom of the explosion-proof rear housing. The heat-conducting frame includes a heat-conducting body, with an inner connecting plate welded to the inner end of the heat-conducting body and an outer connecting plate connected to the outer end of the heat-conducting body.

[0012] Furthermore, a positioning protrusion is provided in the middle of the outer connecting plate, and a positioning groove that cooperates with the positioning protrusion is provided at the bottom of the explosion-proof rear shell.

[0013] Furthermore, the pressure control device includes a heat-conducting pipe, which includes an outer rigid pipe disposed outside the explosion-proof rear housing. The outer rigid pipe is connected to a deformable pipe, which deforms under pressure, thereby buffering pressure changes in the sealed explosion-proof cavity.

[0014] Furthermore, the outer rigid tube is an arc-shaped tube with a deformable tube connected to each end. The lower ends of the two deformable tubes are connected, and the deformable tube is located inside the sealed explosion-proof cavity. Pentafluoropropane is filled between the outer rigid tube and the deformable tube to form a gravity heat pipe, thereby accelerating the heat dissipation of the sealed explosion-proof cavity.

[0015] Furthermore, an inner rigid tube is connected between the lower ends of the two deformable tubes, and a core tube is installed inside the deformable tube. This provides support when the core tube deforms and reduces the volume at the lower end of the deformable tube, thereby increasing the contact area between pentafluoropropane and the deformable tube and improving heat exchange efficiency. Flow holes are machined on the flange to ensure smooth flow of pentafluoropropane.

[0016] The beneficial effects of this invention are as follows: 1. Due to the thickness and weight of the window glass, a large gap needs to be reserved during installation to ensure that the position of the window glass can be adjusted, and to create a large gap for the flow of adhesive. After the adhesive is applied, a thick buffer layer is formed. The adhesive used is 6101 type epoxy resin, which has low initial viscosity and high aging resistance after curing. During installation, the gap between the window glass and the window glass mounting groove is filled by the support frame, thereby controlling the position of the window glass.

[0017] 2. The sealed explosion-proof cavity is also connected to a pressure control device, which includes heat dissipation fins installed on the explosion-proof rear shell. The heat dissipation fins quickly cool down the cavity, thereby reducing the pressure increase caused by the temperature rise. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main view of Example 1; Figure 2 This is a partial cross-sectional view of the right side of Example 1; Figure 3 for Figure 2 Enlarged view of a portion of point A in the middle; Figure 4 This is a schematic diagram of the right cross-section of Example 1; Figure 5 for Figure 4 Enlarged view of a portion of point B in the middle; Figure 6 for Figure 4 Enlarged view of a portion of point C in the middle; Figure 7 for Figure 4 Enlarged view of a portion of point D; Figure 8 This is a partial cross-sectional view of Example 1 from the rear. Figure 9 This is a schematic diagram of the rear view structure of the explosion-proof panel; Figure 10 for Figure 9 Enlarged view of a portion of point E in the middle; Figure 11 A schematic diagram showing the connection between the supporting frame and the transverse groove; Figure 12 This is a schematic diagram of the LCD screen mounting plate structure. Figure 13 This is a schematic cross-sectional view of the window glass in Example 2; Figure 14 This is a schematic diagram of the right cross-section of Example 3; Figure 15 This is a schematic diagram of the heat conduction frame structure in Example 3; Figure 16 This is a schematic diagram of the heat conduction frame structure in Example 4; Figure 17 This is a schematic diagram showing the positional relationship between the heat pipe and the explosion-proof rear shell in Example 5; Figure 18 This is a schematic cross-sectional view of the heat pipe in Example 5; Figure 19 for Figure 18 Enlarged view of a portion of point F in the middle; Figure 20 This is a schematic diagram of the cross-section of the heat pipe.

[0019] in: 1. Explosion-proof panel; 101. LCD screen mounting plate; 102. LCD screen; 103. Touch screen; 104. Viewing window glass; 105. Sealing ring one; 106. Electrical connector; 107. Glass pressure plate; 108. Buffer pad; 109. Adhesive groove; 110. Epoxy resin adhesive layer; 111. Vertical groove; 112. Horizontal groove; 113. Multi-hole ring; 114. Viewing window glass mounting groove; 115. Connecting hole; 116. Button shaft hole; 117. Positioning groove; 118. Flow groove; 119. Support frame; 120. Connecting plate; 121. LCD screen receiving groove; 122. Thin-walled section; 123. Transition section; 2. Switch; 201. Button; 202. Button shaft; 203. Switch body; 204. Pins; 3. Keyboard; 301. Explosion-proof cable; 302. Hanging nail; 4. Explosion-proof alarm light; 401. Threaded connection post; 5. Explosion-proof rear shell; 501. Heat dissipation fins; 502. Heat conductor; 503. Outer connecting plate; 504. Inner connecting plate; 505. Positioning protrusion; 506. Heat-conducting pipe; 507. Outer rigid pipe; 508. Deformable pipe; 509. Core tube; 510. Inner rigid pipe; 511. Flow hole; 512. Sealing ring II; 513. Upper connecting flange; 514. Lower connecting flange; 515. Support ring; 6. Explosion-proof grate; 601. Sealing gasket; 7. Safety barrier circuit board; 8. Grounding post. Detailed Implementation

[0020] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1 like Figure 1-12 As shown, a display device with impact-resistant and explosion-proof protection functions includes an explosion-proof rear housing 5 and an explosion-proof panel 1. A sealed explosion-proof cavity is formed between the explosion-proof rear housing 5 and the explosion-proof panel 1. A safety barrier circuit board 7 is installed inside the sealed explosion-proof cavity. Both the explosion-proof panel 1 and the explosion-proof rear housing 5 are made of aluminum alloy material, which has high structural strength and thermal conductivity, and high explosion-proof performance.

[0023] An LCD screen 102 is installed on the explosion-proof panel 1. The LCD screen 102 is connected to a touch screen 103 and a viewing window 104. Specifically, the touch screen 103 is electrically connected to the safety barrier circuit board 7 via an electrical connector 106. The main body of the viewing window 104 is explosion-proof glass with a thickness of 8-15mm, specifically T12 type ultra-clear tempered glass. An LCD screen fixing plate 101 is also installed inside the explosion-proof panel 1. An LCD screen receiving groove 121 is formed in the middle of the LCD screen fixing plate 101. The LCD screen fixing plate 101 is made of stainless steel or galvanized plate. An integrally formed connecting plate 120 is formed at the edge position and then fixed to the explosion-proof panel 1 by bolts and connecting holes 115. A buffer support device is installed between the edge position of the LCD screen fixing plate 101 and the explosion-proof panel 1. The buffer support device includes an annular glass pressure plate 107. A buffer pad 108 is installed between the glass pressure plate 107 and the explosion-proof panel 1. The outer side of the buffer pad 108 is pressed against the explosion-proof panel 1, and the inner side of the buffer pad 108 is pressed against the viewing window glass 104. The buffer pad is a rubber pad, which can improve the tightness of the fit of the viewing window glass 104 and form a seal.

[0024] An explosion-proof panel 1 is equipped with a viewing glass mounting groove 114. A buffer support device 2 is installed between the viewing glass mounting groove 114 and the viewing glass 104. The buffer support device 2 includes an adhesive film layer installed between the viewing glass mounting groove 114 and the viewing glass 104. The adhesive film layer is connected to a thickness control device. The thickness control device includes adhesive grooves processed on the side and bottom of the viewing glass mounting groove 114. The adhesive grooves include vertical grooves 111 evenly distributed on the side of the viewing glass mounting groove 114 and horizontal grooves 112 evenly distributed on the bottom of the viewing glass mounting groove 114. The vertical grooves 111 and the horizontal grooves... 112 are connected, and adhesive grooves 109 are machined between the upper ends of each vertical groove 111. Adhesive collection devices are installed at the ends of the horizontal grooves 112. In this embodiment, an annular positioning groove 117 is machined at the opening of the window glass mounting groove 114. An adhesive collection device is installed in the positioning groove 117. The adhesive collection device includes a porous ring 113, specifically made of polyurethane foam, which is breathable and ensures that the adhesive flows normally in the groove, while preventing the adhesive from overflowing downwards, thereby avoiding secondary cleaning. A support frame 119 is also installed in the window glass mounting groove 114. Since the window glass 104 is relatively thick and heavy, a support frame 119 is installed in the mounting groove 114. During installation, a large gap needs to be reserved to ensure the position of the viewing window 104 can be adjusted, while also creating a large gap for adhesive flow. After adhesive application, a thick buffer layer is formed. The adhesive used is type 6101 epoxy resin, which has low initial tack and high aging resistance after curing. During installation, the support frame 119 fills the gap between the viewing window 104 and the viewing window mounting groove 114, thereby controlling the position of the viewing window 104. The support frame 119 includes a metal mesh, specifically a copper mesh. Vertical support ribs are formed between two adjacent vertical grooves 111. A transverse support rib is formed between the two transverse grooves 112. The aperture value of the metal mesh is greater than the width value of the vertical support rib, and the aperture value of the metal mesh is greater than the width value of the transverse support rib. This ensures that the adhesive can flow between the support frame 119, the transverse grooves 112, and the vertical grooves 111. During the adhesive injection process, the adhesive is distributed through the adhesive distribution groove 109. After heating and curing, the buffer pad 108 and the glass pressure plate 107 are installed. The buffer pad 108 extends into the adhesive distribution groove 109. It is worth noting that flow grooves 118 are processed at the four corners to ensure that the adhesive is more abundant at the corners and improve the sealing performance.

[0025] In this embodiment, the support frame 119 is grounded, thereby forming a shielding mesh surrounding the viewing window glass 104, which can effectively reduce interference.

[0026] It also includes an explosion-proof keyboard 3, which is connected to the LCD screen 102 via an explosion-proof cable 301. The explosion-proof cable 301 is connected to the explosion-proof rear housing 5 via an explosion-proof gland 6. A sealing gasket 601 is also installed between the explosion-proof gland 6 and the explosion-proof rear housing 5 to ensure a sealing effect. A hanging nail 302 is also installed on the side of the explosion-proof panel 1, and the explosion-proof keyboard 3 is suspended on the side of the explosion-proof panel 1 via the hanging nail 302 for easy access.

[0027] An explosion-proof alarm light 4 is also installed on the explosion-proof panel 1. The explosion-proof alarm light 4 is connected to the explosion-proof panel 1 through a threaded connecting post 401, which is easy to install and has high sealing performance.

[0028] The explosion-proof panel 1 is also equipped with a switch 2. The switch 2 includes a button 201 installed on the outside of the explosion-proof panel 1. A button shaft hole 116 is machined on the explosion-proof panel 1 to install the button shaft 202. The inner end of the button shaft 202 is connected to the switch body 203. The switch body 203 is connected to the safety barrier circuit board 7 through pins 204 to control the start and stop.

[0029] A sealing ring 105 is installed between the explosion-proof rear housing 5 and the explosion-proof panel 1. A grounding stud 8 is also installed on the explosion-proof rear housing 5 to ground and eliminate static electricity.

[0030] The sealed explosion-proof cavity is also connected to a pressure control device, which includes heat dissipation fins 501 installed on the explosion-proof rear housing 5. The heat dissipation fins 501 quickly cool down the cavity, thereby reducing the pressure increase caused by the temperature rise.

[0031] The display device with impact-resistant and explosion-proof protection provided in this embodiment adopts various explosion-proof components, has a high impact-resistant and explosion-proof effect, and the window glass 104 is made of thickened glass to improve the impact-resistant and explosion-proof effect. It can be widely used in chemical plants, underground mines and other scenarios with high explosion-proof requirements.

[0032] Example 2 like Figure 13 As shown, a display device with impact-resistant and explosion-proof protection function differs from Embodiment 1 in that a thin-walled portion 122 is integrally formed in the middle of the viewing window 104. The thickness of the thin-walled portion 122 is 2 / 3 to 4 / 5 of the thickness of the viewing window 104. A transition portion 123 is integrally formed at the edge of the thin-walled portion 122. The transition portion 123 is an arc-shaped transition portion. Since the edge of the viewing window 104 is supported by the explosion-proof panel 1, and the middle of the explosion-proof panel 1 is the main touch position, the sensitivity can be improved by reducing the thickness of the viewing window 104. Furthermore, the edge strength of the thin-walled portion 122 can be enhanced by the arc-shaped transition portion 123 to ensure the impact-resistant and explosion-proof effect. The overall explosion-proof effect is reduced, but the sensitivity is increased.

[0033] Example 3 like Figure 14-15As shown, a display device with impact-resistant and explosion-proof protection function differs from Embodiment 1 in that the pressure control device further includes a heat-conducting frame installed between the LCD screen fixing plate 101 and the bottom of the explosion-proof rear housing 5. The heat-conducting frame includes a heat-conducting body 502. In this example, the heat-conducting body 502 is tubular and made of copper. An inner connecting plate 504 is welded to the inner end of the heat-conducting body 502, and an outer connecting plate 503 is welded to the outer end of the heat-conducting body 502. During installation, the inner connecting plate 504 is attached to the LCD screen fixing plate 101 and connected by rivets. A positioning protrusion 505 is fixed in the middle of the outer connecting plate 503. The positioning protrusion 505 is conical. A positioning groove that matches the positioning protrusion 505 is machined at the bottom of the explosion-proof rear housing 5. The outer connecting plate 503 is arc-shaped. During installation, the outer connecting plate 503 is squeezed and deformed, thereby attaching to the explosion-proof rear housing 5 and improving the heat conduction effect.

[0034] The heat conduction frame consists of multiple parts, thereby improving the thermal conductivity.

[0035] Example 4 like Figure 16 As shown, a display device with impact-resistant and explosion-proof protection function is different from Embodiment 3 in that the heat conductor 502 is an arc-shaped plate and the positioning protrusion 505 is a convex rib, with high connection strength. During the installation process, the heat conductor 502 deforms and the outer connecting plate 503 is attached and fixed to the explosion-proof rear shell 5.

[0036] The structure is simpler, but the thermal conductivity of the heat conductor 502 is reduced.

[0037] Example 5 like Figure 17-20 As shown, unlike embodiments 3-4, the pressure control device includes a heat-conducting pipe 506, which includes an outer rigid pipe 507 installed outside the explosion-proof rear housing 5. The outer rigid pipe 507 is a stainless steel pipe with a wall thickness of 4mm. The outer rigid pipe 507 is connected to a deformable pipe 508 through an upper connecting flange 513 and a lower connecting flange 514. A sealing ring 512 is installed between the upper connecting flange 513 and the lower connecting flange 514. A support ring 515 is sealed and connected to the lower connecting flange 514, and is sealed and connected to the explosion-proof rear housing 5 through the support ring 515. The deformable pipe 508 is sealed and connected to the support ring 515. In this embodiment, the deformable pipe 508 is a stainless steel pipe with a thickness of 2mm and an elliptical cross-section. It deforms under pressure, thereby buffering the pressure changes of the sealed explosion-proof cavity.

[0038] The outer rigid tube 507 is an arc-shaped tube with a deformable tube 508 connected to each end. The lower ends of the two deformable tubes 508 are connected. The deformable tubes 508 are located inside the sealed explosion-proof cavity. Pentafluoropropane is filled between the outer rigid tube 507 and the deformable tubes 508 to form a gravity heat pipe, which accelerates the heat dissipation of the sealed explosion-proof cavity.

[0039] Tests revealed that the deformation of the deformable tube 508 was difficult to control, leading to excessive deformation and cracking. In this embodiment, an inner rigid tube 510 is installed between the lower ends of the two deformable tubes 508 via a flange. A core tube 509 is inserted inside the deformable tube 508. The core tube 509 is a round tube with a thickness of 3mm. The outer diameter of the core tube 509 is 4-5mm smaller than the short diameter of the deformable tube 508, thus providing support when the core tube 509 deforms and reducing the volume at the lower end of the deformable tube 508. This increases the contact area between pentafluoropropane and the deformable tube 508, improving heat exchange efficiency. Flow holes 511 are machined on the flange to ensure smooth flow of pentafluoropropane.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A display device with impact-resistant and explosion-proof protection functions, comprising an explosion-proof rear housing and an explosion-proof panel, wherein a sealed explosion-proof cavity is formed between the explosion-proof rear housing and the explosion-proof panel, an LCD screen is disposed on the explosion-proof panel, the LCD screen is connected to a touch screen and a viewing window, and the main body of the viewing window is explosion-proof glass, characterized in that, The explosion-proof panel also includes a liquid crystal display (LCD) screen mounting plate. A liquid crystal display (LCD) screen receiving groove is formed in the middle of the mounting plate. A buffer support device is provided between the edge of the LCD screen mounting plate and the explosion-proof panel. The buffer support device includes an annular glass pressure plate. A buffer pad is provided between the glass pressure plate and the explosion-proof panel. The outer side of the buffer pad is pressed against the explosion-proof panel, and the inner side of the buffer pad is pressed against the viewing window glass. The explosion-proof panel is provided with a viewing window glass mounting groove, and a second buffer support device is provided between the viewing window glass mounting groove and the viewing window glass. The second buffer support device includes an adhesive film layer disposed between the viewing window glass mounting groove and the viewing window glass, and the adhesive film layer is connected to a thickness control device. The thickness control device includes adhesive grooves disposed on the side and bottom of the window glass mounting groove. The adhesive grooves include vertical grooves evenly distributed on the side of the glass mounting groove and horizontal grooves evenly distributed on the bottom of the window glass mounting groove. The vertical grooves and the horizontal grooves are connected. An adhesive distribution groove is disposed between the upper ends of each vertical groove. An adhesive collection device is disposed at the end of the horizontal groove. A support frame is also disposed inside the window glass mounting groove.

2. The display device with impact-resistant and explosion-proof protection function according to claim 1, characterized in that, The supporting frame includes a metal mesh, with vertical supporting ribs formed between two adjacent vertical grooves and horizontal supporting ribs formed between two adjacent horizontal grooves. The aperture value of the metal mesh is greater than the width value of the vertical supporting ribs, and the aperture value of the metal mesh is greater than the width value of the horizontal supporting ribs.

3. The display device with impact-resistant and explosion-proof protection function according to claim 1, characterized in that, It also includes an explosion-proof keyboard, which is connected to the LCD screen via an explosion-proof cable. The explosion-proof cable is connected to the explosion-proof rear housing via an explosion-proof gland.

4. The display device with impact-resistant and explosion-proof protection function according to claim 1, characterized in that, The explosion-proof panel is also equipped with an explosion-proof alarm light.

5. The display device with impact-resistant and explosion-proof protection function according to claim 1, characterized in that, The sealed explosion-proof cavity is also connected to a pressure control device, which includes heat dissipation fins installed on the explosion-proof rear shell. The heat dissipation fins quickly cool down the cavity, thereby reducing the pressure increase caused by the temperature rise.

6. The display device with impact-resistant and explosion-proof protection function according to claim 5, characterized in that, The pressure control device also includes a heat-conducting frame disposed between the LCD screen fixing plate and the bottom of the explosion-proof rear housing. The heat-conducting frame includes a heat-conducting body, with an inner connecting plate welded to the inner end of the heat-conducting body and an outer connecting plate connected to the outer end of the heat-conducting body.

7. The display device with impact-resistant and explosion-proof protection function according to claim 6, characterized in that, A positioning protrusion is provided in the middle of the outer connecting plate, and a positioning groove that matches the positioning protrusion is provided at the bottom of the explosion-proof rear shell.

8. The display device with impact-resistant and explosion-proof protection function according to claim 5, characterized in that, The pressure control device includes a heat-conducting pipe, which includes an outer rigid pipe disposed outside the explosion-proof rear shell. The outer rigid pipe is connected to a deformable pipe, which deforms under pressure, thereby buffering pressure changes in the sealed explosion-proof cavity.

9. The display device with impact-resistant and explosion-proof protection function according to claim 8, characterized in that, The outer rigid tube is an arc-shaped tube with a deformable tube connected to each end. The lower ends of the two deformable tubes are connected. The deformable tubes are located inside the sealed explosion-proof cavity. Pentafluoropropane is filled between the outer rigid tube and the deformable tubes to form a gravity heat pipe, thereby accelerating the heat dissipation of the sealed explosion-proof cavity.

10. The display device with impact-resistant and explosion-proof protection function according to claim 9, characterized in that, An inner rigid tube is connected between the lower ends of the two deformable tubes. A core tube is installed inside the deformable tube, which can provide support when the core tube deforms and reduce the volume of the lower end of the deformable tube, thereby increasing the contact area between pentafluoropropane and the deformable tube and improving the heat exchange efficiency. Flow holes are machined on the flange to ensure smooth flow of pentafluoropropane.

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