Onboard Touch Screens for Rail Transit Trains

Abstract

This application relates to in-vehicle touch displays for rail transit trains, specifically to the field of touch display technology. It includes a mounting frame with a limiting groove at the center of one side surface. A touch display screen is embedded within the limiting groove. The touch display screen includes a display bezel, tempered glass, a touch screen unit, a display unit, a control motherboard, and a power module. Limiting components are provided on both inner walls of the limiting groove. Positioning grooves are arranged along the surface edge of the limiting groove, and magnetic blocks are embedded within the positioning grooves. This application allows the touch display screen to be fixed within the limiting groove and also to be removed separately for passengers to order food or view current route information. When the screen malfunctions due to touch control failure or display abnormalities, the touch display screen can be directly removed for repair or replacement without disassembling the entire device panel, significantly reducing downtime.

Description

Technical Field

[0001] This application relates to the field of touch display technology, and in particular to in-vehicle touch displays for rail transit trains. Background Technology

[0002] The touch screen display of the intelligent interface for rail transit information management is a service system in the subway that provides passengers with various information. The passenger information system is a system that provides information services to passengers by relying on multimedia network technology, with a computer system as the core and station and on-board display terminals as the medium.

[0003] In the prior art, for related technologies of train-mounted touch displays, please refer to Chinese Patent Publication No. CN111562816A, which discloses a touch display for a smart interface for rail transit information management. This display includes an MCU microcontroller, a differential RGB signal receiving circuit, a differential audio signal receiving circuit, an image decoding circuit, a touch display, and an audio processing circuit. The image decoding circuit is electrically connected to the differential RGB signal receiving circuit, and the audio processing circuit is electrically connected to the differential audio signal receiving circuit. The image decoding circuit and the audio processing circuit are respectively electrically connected to the MCU microcontroller. The touch display is electrically connected to the image decoding circuit and the MCU microcontroller through a display driving circuit. The display driving circuit restores the signal decoded by the image processing circuit into an image signal and displays it on the touch display. The touch display also includes a touch screen and a display screen. A driver board and a booster board are mounted on the back of the mounting frame. This invention has the advantages of easy disassembly and installation, greatly improving work efficiency during transportation and maintenance, and high heat dissipation and condensation efficiency.

[0004] In the process of developing this application, the inventors discovered the following problems with the prior art:

[0005] In existing train-mounted touch screen displays, which are often fixed and integrated, passengers often need to be at a specific angle to control them when they need to order food or view train information. When the screen malfunctions or displays abnormally, the entire device panel needs to be disassembled to remove the touch screen for repair or replacement. Summary of the Invention

[0006] The purpose of this application is to provide an onboard touch display for rail transit trains.

[0007] Firstly, the on-board touch display for rail transit trains provided in this application adopts the following technical solution:

[0008] A rail transit train-mounted touch screen display includes a mounting frame. A limiting groove is provided at the center of one side surface of the mounting frame. A touch screen display is embedded inside the limiting groove. The touch screen display includes a display bezel, tempered glass, a touch screen unit, a display unit, a control motherboard, and a power module. Limiting components are provided on both inner walls of the limiting groove. Positioning grooves are arranged along the surface edge of the limiting groove. A magnetic block is embedded inside the positioning groove. The magnetic block is connected to the bottom inner wall of the positioning groove by an ejector spring. The end of the magnetic block away from the ejector spring extends to the outside of the positioning groove. The limiting components include a side groove, a compression spring, a push plate, a miniature damping rod, a movable rod, a rack, an adjusting rod, a gear, and an adjusting knob.

[0009] By adopting the above technical solution, the mounting frame serves as a fixed installation frame, which can be fixedly installed on the wall of the business class carriage of the train. The touch screen can be embedded in the limiting slot for fixation, and can also be removed separately for passengers to order food or view current route information. When the screen malfunctions or displays abnormally, it is not necessary to disassemble the entire equipment panel; the touch screen can be directly removed for repair or replacement, significantly reducing downtime. The limiting component can limit and fix the touch screen while also providing buffer protection. At the same time, the magnetic block, in conjunction with the limiting component, can connect and fix the touch screen embedded in the limiting slot, preventing the touch screen from separating from the mounting frame due to bumps during train operation. After the touch screen is embedded in the limiting slot, it can push the magnetic block into the positioning slot. When it is necessary to remove the touch screen, the clamping limit can be released by the limiting component, and then the rebound force of the push-out spring pushes out the magnetic block, thereby moving the edge of the touch screen out of the limiting slot, making it easy for passengers to remove the touch screen.

[0010] Tempered glass is fixedly connected to one side of the surface of the display bezel. A touch screen unit is fixedly connected to the outer wall of the tempered glass near the inside of the display bezel. A display unit is fixedly connected to the end of the touch screen unit away from the tempered glass. A control motherboard is provided on one side of the inner wall of the display bezel. A power module is provided on one side of the control motherboard.

[0011] By adopting the above technical solution, tempered glass is fixed to one side of the display bezel with an epoxy resin adhesive layer. The thickness is 2.5mm and the surface hardness is ≥9H, which plays a protective role. The touch screen unit is a capacitive touch film layer and is electrically connected to the control motherboard through an FFC flexible cable. The display unit is an OLED display panel with a resolution of 3840×2160 and supports the HDR10 standard. The control motherboard is connected to the display unit through an LVDS interface. Its internal main control chip is based on the ARM Cortex-A73 architecture. The power module adopts DC12V input, has a built-in overvoltage protection circuit, and is connected to the control motherboard through copper foil traces.

[0012] Compression springs are arranged on the inner wall of the side groove. A push plate is connected to the end of the compression spring away from the side groove. A miniature damping rod is provided on one side of the compression spring. The two ends of the miniature damping rod are respectively connected to the inner wall of the side groove and the outer wall of one side of the push plate. A movable rod is fixedly connected to the center of the side of the push plate near the inner wall of the side groove. The movable rod is slidably connected to the inner wall of the side groove. A rack is fixedly connected to the outer wall of one side of the movable rod.

[0013] By adopting the above technical solution, the compression spring can provide support for the push plate and can contract and rebound under pressure. The compression spring can push the push plate out of the side groove to lock and fix it to the slot on the side of the display frame, thus realizing the fixed connection of the touch screen. This avoids the instability of the touch screen connection caused by magnetic connection alone. At the same time, when the train encounters bumps during high-speed travel, the touch screen will vibrate under force. The vibration will drive one of the push plates to move into the side groove. The compression spring will be compressed and absorb the vibration. Then, the micro damping rod will provide a certain damping effect on the moving push plate to counteract the vibration caused by the rebound of the compression spring. This will prevent the screen from having poor contact or loosening of internal components due to high-frequency vibration. At the same time, the movement of the push plate can drive the movable rod and the rack to move synchronously.

[0014] An adjusting rod is connected to one inner wall of the side groove via a bearing. A gear is fixedly connected to the outer wall of the middle part of one side of the adjusting rod. The gear meshes with a rack. An adjusting knob is fixedly connected to the top end of the adjusting rod extending to the outside of the mounting frame.

[0015] By adopting the above technical solution, when it is necessary to remove the touch screen, the adjustment knob can be turned. The rotation of the adjustment knob drives the adjustment rod to rotate, which in turn drives the gear to rotate synchronously. The rotation of the gear drives the rack to move horizontally, which in turn drives the movable rod and the push plate to retract synchronously. This causes the push plate to move out of the slot. After the touch screen is no longer limited by the push plate, the rebound force of the push spring pushes out the magnetic block, which in turn drives the edge of the touch screen to move out of the limiting groove. At this time, the touch screen and the mounting frame are only connected by magnetic attraction, which makes it easy for passengers to remove the touch screen.

[0016] The push plate has a sloping surface at the top of the end away from the movable rod, and a wireless charging coil is provided on the bottom surface of the sloping surface. Both outer walls of the display bezel have slots that match the push plate. The inner wall of the slots has a wireless charging receiver module that matches the wireless charging coil.

[0017] By adopting the above technical solution, the inclined surface allows the touch screen to be directly embedded into the limiting groove during installation. The inclined surface of the push plate is pressed and pushes the push plate to move into the side groove. When the touch screen moves to the bottom surface of the limiting groove, the slot and the push plate match perfectly, so that the push plate is embedded in the slot for limiting and fixing. At the same time, when the push plate and the slot are in close contact, the wireless charging coil can automatically cooperate with the wireless charging receiver module to automatically supply power to the power module of the touch screen.

[0018] A heat-conducting plate is fixedly connected to the center of the outer wall of the display bezel on the side away from the tempered glass. Magnetic plates are arranged along the edge of the heat-conducting plate. The magnetic plates are fixedly connected to the display bezel, and the magnetic plates match the magnetic blocks.

[0019] By adopting the above technical solution, the heat generated inside the touch screen can be conducted to the surface of the heat-conducting plate for heat dissipation. The magnetic sheet and magnetic block can be magnetically connected to the touch screen and the mounting frame, which can position the touch screen and connect it to a certain extent.

[0020] A heat sink is fixedly connected to the inner wall of the center of the limiting groove. The heat sink matches the heat conduction plate, and both ends of the heat sink are connected to heat conduction copper pipes. Heat dissipation fins are provided on the upper and lower outer walls of the mounting frame. The end of the heat conduction copper pipe away from the heat sink is connected to the heat dissipation fin.

[0021] By adopting the above technical solution, the heat sink can absorb the heat on the surface of the heat conduction plate, and then the heat is transferred to the heat dissipation fins through the heat conduction copper pipe. The heat is then dissipated by the external airflow, which realizes the heat dissipation effect of the touch screen and improves its service life.

[0022] A Bluetooth module is installed inside one side of the mounting frame, a signal receiver is installed inside one side of the display bezel, a positioning module is installed on one side of the signal receiver, and an alarm is installed on one side of the mounting frame.

[0023] By adopting the above technical solution, the Bluetooth module uses the Bluetooth Low Energy 5.2 protocol with an adjustable transmission power of -20 dBm to +10 dBm, used to establish two-way communication with external devices. The signal receiver works in the same frequency band as the Bluetooth module and is used to receive Bluetooth signal strength indicators and data packets. The Bluetooth module periodically broadcasts beacon signals. The positioning module includes a positioning chip and a ceramic antenna with a positioning accuracy of ≤30 cm, used to obtain the real-time position coordinates of the touch screen 3. The signal receiver parses the RSSI value and calculates the relative distance with the mounting frame. When the distance exceeds a preset threshold, such as 10 meters, the control motherboard triggers the buzzer and LED lights of the alarm.

[0024] The inner walls of the limiting grooves adjacent to the side grooves are provided with longitudinal buffer pads, and the two sets of longitudinal buffer pads abut against the touch screen.

[0025] By adopting the above technical solution, the longitudinal buffer pad can buffer the longitudinal vibration of the touch screen, thereby improving the reliability of the device.

[0026] Both the mounting frame and the display bezel are reinforced with internal ribs, and the mounting frame has mounting holes at its edge.

[0027] By adopting the above technical solution, the strength of the mounting frame and the display bezel can be improved by reinforcing ribs, the pressure resistance of the touch screen can be enhanced, and the mounting frame can be installed and fixed by mounting holes.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. The mounting frame serves to fix the device in place, allowing it to be securely installed on the wall of the business class carriage. The touchscreen display can be embedded in the limiting slot for fixation, or it can be removed separately for passengers to order food or view current route information. When the screen malfunctions or displays abnormally, the entire device panel does not need to be disassembled; the touchscreen display can be directly removed for repair or replacement, significantly reducing downtime. The limiting component not only limits and fixes the touchscreen display but also provides cushioning protection. At the same time, the magnetic block, in conjunction with the limiting component, connects and fixes the touchscreen display embedded in the limiting slot, preventing the touchscreen display from separating from the mounting frame due to bumps during train operation.

[0030] 2. When it is necessary to remove the touch screen, the adjustment knob can be turned. The rotation of the adjustment knob drives the adjustment rod to rotate, which in turn drives the gear to rotate synchronously. The rotation of the gear drives the rack to move horizontally, which in turn drives the movable rod and the push plate to retract synchronously. This causes the push plate to move out of the slot. After the touch screen is no longer limited by the push plate, the rebound force of the push spring pushes out the magnetic block, which in turn causes the edge of the touch screen to move out of the limiting groove. At this time, the touch screen and the mounting frame are only connected by magnetic attraction, which makes it easy for passengers to remove the touch screen. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an embodiment of this application;

[0032] Figure 2 This is a schematic diagram of the connection structure between the mounting frame and the touch display screen in an embodiment of this application;

[0033] Figure 3 This is a three-dimensional structural diagram of the touch display screen according to an embodiment of this application;

[0034] Figure 4 This is a front view structural diagram of the installation frame according to an embodiment of this application;

[0035] Figure 5 This is a schematic diagram of the connection structure of the limiting component according to an embodiment of this application;

[0036] Figure 6 This is a schematic diagram of the rear view structure of the touch screen according to an embodiment of this application;

[0037] Figure 7 This is a schematic diagram of the internal installation structure of the touch screen according to an embodiment of this application;

[0038] Figure 8 This is a schematic diagram of the connection structure between the magnetic block and the ejector spring in an embodiment of this application.

[0039] Explanation of reference numerals in the attached drawings: 1. Mounting frame; 2. Limiting groove; 3. Touch screen display; 301. Display bezel; 302. Tempered glass; 303. Touch screen unit; 304. Display unit; 305. Control motherboard; 306. Power module; 4. Limiting assembly; 401. Side groove; 402. Compression spring; 403. Push plate; 404. Miniature damping rod; 405. Movable rod; 406. Rack; 407. Adjusting rod; 408. Gear ; 409. Adjustment knob; 5. Positioning slot; 6. Magnetic block; 7. Ejection spring; 8. Card slot; 9. Wireless charging receiver module; 10. Heat-conducting plate; 11. Magnetic plate; 12. Heat sink; 13. Heat-conducting copper pipe; 14. Heat sink fins; 15. Bluetooth module; 16. Signal receiver; 17. Positioning module; 18. Alarm; 19. Longitudinal buffer pad; 20. Reinforcing rib; 21. Mounting hole; 22. Angled surface; 23. Wireless charging coil. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1 - Appendix Figure 8 This application will be described in further detail below.

[0041] Example: A touch screen display on a rail transit train includes a mounting frame 1. A limiting groove 2 is provided at the center of one side surface of the mounting frame 1. A touch screen display 3 is embedded inside the limiting groove 2. Limiting components 4 are provided on both inner walls of the limiting groove 2. Positioning grooves 5 are arranged along the surface edge of the limiting groove 2. A magnetic block 6 is embedded inside the positioning groove 5. The magnetic block 6 is connected to the bottom inner wall of the positioning groove 5 by a push-out spring 7. The end of the magnetic block 6 away from the push-out spring 7 extends to the outside of the positioning groove 5. The mounting frame 1 serves to fix the display, allowing it to be fixedly installed on the wall of the business class carriage. The touch screen display 3 can be embedded in the limiting groove 2 for fixation, and can also be removed separately for passengers to order food or view current route information. When the screen experiences touch malfunction or display abnormalities, [the following steps are taken]. The entire equipment panel needs to be disassembled to directly remove the touch screen 3 for repair or replacement, significantly shortening downtime. The limiting component 4 can limit and fix the touch screen 3 while also providing buffer protection. At the same time, the magnetic block 6, in conjunction with the limiting component 4, can connect and fix the touch screen 3 embedded in the limiting groove 2, preventing the touch screen 3 from separating from the mounting frame 1 due to bumps caused by special circumstances during train operation. After the touch screen 3 is embedded in the limiting groove 2, it can push the magnetic block 6 into the positioning groove 5. When it is necessary to remove the touch screen 3, the clamping limit can be released by the limiting component 4, and then the rebound force of the push-out spring 7 pushes out the magnetic block 6, thereby moving the edge of the touch screen 3 out of the limiting groove 2, making it easier for passengers to remove the touch screen 3.

[0042] The touch display screen 3 includes a display bezel 301, tempered glass 302, a touch screen unit 303, a display unit 304, a control motherboard 305, and a power module 306. Tempered glass 302 is fixedly connected to one side of the surface of the display bezel 301. The touch screen unit 303 is fixedly connected to the outer wall of the tempered glass 302 near the interior of the display bezel 301. The display unit 304 is fixedly connected to the end of the touch screen unit 303 away from the tempered glass 302. The control motherboard 305 is located on the inner wall of one side of the display bezel 301. A power module 306 is provided on the side. Tempered glass 302 is fixed to one side of the display frame 301 by an epoxy resin layer with a thickness of 2.5mm and a surface hardness of ≥9H, which serves a protective function. The touch screen unit 303 is a capacitive touch film layer and is electrically connected to the control motherboard 305 through an FFC flexible cable. The display unit 304 is an OLED display panel with a resolution of 3840×2160 and supports the HDR10 standard. The control motherboard 305 is connected to the display unit 304 through an LVDS interface. Its internal main control chip is based on the ARM Cortex-A73 architecture. The power module 306 adopts a DC12V input, has a built-in overvoltage protection circuit, and is connected to the control motherboard 305 through copper foil traces.

[0043] The limiting assembly 4 includes a side groove 401, a compression spring 402, a push plate 403, a miniature damping rod 404, a movable rod 405, a rack 406, an adjusting rod 407, a gear 408, and an adjusting knob 409. Compression springs 402 are arranged along the inner wall of the side groove 401. The end of each compression spring 402 away from the side groove 401 is connected to the push plate 403. A miniature damping rod 404 is located on one side of each compression spring 402. Both ends of the miniature damping rod 404 are connected to the inner wall of the side groove 401 and the outer wall of one side of the push plate 403, respectively. A movable rod 405 is fixedly connected to the center of the side of the push plate 403 closest to the inner wall of the side groove 401. The movable rod 405 is connected to the side groove... The inner walls of 401 are slidably connected. A rack 406 is fixedly connected to one outer wall of the movable rod 405. An adjusting rod 407 is connected to one inner wall of the side groove 401 via a bearing. A gear 408 is fixedly connected to the middle outer wall of one side of the adjusting rod 407. The gear 408 meshes with the rack 406. One top end of the adjusting rod 407 extends to the outside of the mounting frame 1 and is fixedly connected to an adjusting knob 409. A compression spring 402 can provide support for the push plate 403 and can be compressed and rebound. Through the compression spring 402, the push plate 403 can be pushed out of the side groove 401 to engage and fix the slot 8 on the side of the monitor bezel 301, thereby realizing... The touch screen 3 is fixedly connected to avoid instability caused by relying solely on magnetic connection. Furthermore, when the train encounters bumps during high-speed travel, the touch screen 3 experiences vibrations. These vibrations cause one of the push plates 403 to move into the side groove 401, compressing the compression spring 402 and absorbing the vibrations. Subsequently, a micro-damping rod 404 dampens the moving push plate 403, counteracting the vibrations caused by the rebound of the compression spring 402. This prevents poor contact or loosening of internal components due to high-frequency vibration. Simultaneously, the movement of the push plate 403 drives the movable rod 405 and rack 406 to engage... The touch screen 3 moves synchronously. When it needs to be removed, the adjustment knob 409 can be turned. The rotation of the adjustment knob 409 drives the adjustment rod 407 to rotate, which in turn drives the gear 408 to rotate synchronously. The rotation of the gear 408 drives the rack 406 to move synchronously, which in turn drives the movable rod 405 and the push plate 403 to retract synchronously. This causes the push plate 403 to move out of the slot 8. After the push plate 403 is removed, the touch screen 3 is pushed out of the magnetic block 6 by the rebound force of the push spring 7, which causes the edge of the touch screen 3 to move out of the limiting groove 2. At this time, the touch screen 3 and the mounting frame 1 are only connected by the magnetic block 6, which makes it easy for passengers to remove the touch screen 3.

[0044] The top of the push plate 403 away from the movable rod 405 is provided with a slope 22, and the bottom surface of the slope 22 is provided with a wireless charging coil 23. Both outer walls of the display frame 301 are provided with slots 8, which match the push plate 403. The inner wall of the slot 8 is provided with a wireless charging receiver module 9, which matches the wireless charging coil 23. The slope 22 allows the touch screen 3 to be directly embedded into the limiting groove 2 during installation. When the slope 22 on the surface of the push plate 403 is subjected to pressure, it will push the push plate 403 to move horizontally into the side groove 401. When the touch screen 3 moves to the bottom surface of the limiting groove 2, the slot 8 and the push plate 403 match perfectly, so that the push plate 403 is embedded into the slot 8 for limiting and fixing. At the same time, when the push plate 403 and the slot 8 are in close contact, the wireless charging coil 23 can automatically cooperate with the wireless charging receiver module 9 to automatically supply power to the power module 306 of the touch screen 3.

[0045] A heat-conducting plate 10 is fixedly connected to the center of the outer wall of the monitor bezel 301 on the side away from the tempered glass 302. Magnetic suction pieces 11 are arranged along the edge of the heat-conducting plate 10 and are fixedly connected to the monitor bezel 301. The magnetic suction pieces 11 match the magnetic suction block 6. A heat sink 12 is fixedly connected to the inner wall of the center of the limiting groove 2. The heat sink 12 matches the heat-conducting plate 10, and both ends of the heat sink 12 are connected to heat-conducting copper pipes 13. Heat dissipation fins 14 are provided on the upper and lower outer walls of the mounting frame 1. The end of the heat-conducting copper pipe 13 away from the heat sink 12 is connected to the heat dissipation fin 14. Next, the heat generated inside the touch display screen 3 can be conducted to the surface of the heat conduction plate 10 through the heat conduction plate 10, and the heat sink 12 can absorb the heat on the surface of the heat conduction plate 10. Then, the heat is transferred to the heat sink 14 through the heat conduction copper pipe 13. The heat sink 14 is cooled by the external air flow, which realizes the heat dissipation effect of the touch display screen 3 and improves its service life. The magnetic suction piece 11 and the magnetic suction block 6 can be magnetically connected between the touch display screen 3 and the mounting frame 1, which can position the touch display screen 3 and connect it to a certain extent.

[0046] A Bluetooth module 15 is installed inside one side of the mounting frame 1, a signal receiver 16 is installed inside one side of the display bezel 301, a positioning module 17 is installed on one side of the signal receiver 16, and an alarm 18 is installed on one side of the mounting frame 1. The Bluetooth module 15 adopts the Bluetooth Low Energy 5.2 protocol, with a transmission power adjustable from -20 dBm to +10 dBm, and is used to establish two-way communication with external devices. The signal receiver 16 works in the same frequency band as the Bluetooth module 15 and is used to receive Bluetooth signal strength indicators and data packets. The Bluetooth module 15 periodically broadcasts beacon signals. The positioning module 17 includes a positioning chip and a ceramic antenna, with a positioning accuracy of ≤30cm, and is used to obtain the real-time position coordinates of the touch screen 3. The signal receiver 16 parses the RSSI value and calculates the relative distance with the mounting frame 1. When the distance exceeds a preset threshold, such as 10 meters, the control motherboard 305 triggers the buzzer and LED light of the alarm 18.

[0047] Both sides of the limiting groove 2 adjacent to the side groove 401 are provided with longitudinal buffer pads 19. The two sets of longitudinal buffer pads 19 abut against the touch screen 3. The mounting frame 1 and the display frame 301 are both provided with reinforcing ribs 20. The mounting frame 1 is provided with mounting holes 21 at its edge. The longitudinal buffer pads 19 can buffer the longitudinal vibration of the touch screen 3 and improve the reliability of the device. The reinforcing ribs 20 can improve the strength of the mounting frame 1 and the display frame 301 and enhance the pressure resistance of the touch screen 3. The mounting holes 21 can be used to install and fix the mounting frame 1.

[0048] The implementation principle of this application embodiment is as follows: First, the mounting frame 1 serves as a fixed installation frame, which can be fixedly installed on the wall of the business class carriage of the train. The touch screen 3 can be embedded in the limiting groove 2 for fixation, and can also be removed separately for passengers to order food or view current route information. When the screen malfunctions or displays abnormally, it is not necessary to disassemble the entire device panel; the touch screen 3 can be directly removed for repair or replacement, greatly shortening downtime. The limiting component 4 can limit and fix the touch screen 3 while also providing buffer protection. At the same time, the magnetic block 6, in conjunction with the limiting component 4, can connect and fix the touch screen 3 embedded in the limiting groove 2, preventing damage during train operation. The bumps caused the touch screen 3 to separate from the mounting frame 1. After the touch screen 3 is embedded in the limiting groove 2, it can push the magnetic block 6 into the positioning groove 5. When it is necessary to remove the touch screen 3, the clamping limit can be released by the limiting component 4. Then, the rebound force of the push spring 7 pushes out the magnetic block 6, thereby moving the edge of the touch screen 3 out of the limiting groove 2, making it easier for passengers to remove the touch screen 3. When the train encounters a bump during high-speed travel, the touch screen 3 will vibrate under the force. The vibration will cause one of the push plates 403 to move into the side groove 401. The compression spring 402 will be compressed and contracted to absorb the vibration. Then, the micro damping rod 404 will generate a certain amount of force on the moving push plate 403. The damping effect counteracts the vibration caused by the rebound of the compression spring 402, preventing poor contact or loosening of internal components due to high-frequency vibration of the screen. Simultaneously, the movement of the push plate 403 drives the movable rod 405 and rack 406 to move synchronously. When the touch screen display 3 needs to be removed, the adjustment knob 409 can be turned. The rotation of the adjustment knob 409 drives the adjustment rod 407 to rotate, which in turn drives the gear 408 to rotate synchronously. The rotation of the gear 408 drives the rack 406 to move synchronously, causing the movable rod 405 and push plate 403 to retract synchronously. This causes the push plate 403 to move out of the slot 8. After the push plate 403 is released from its limit, the touch screen display 3 is pushed out of the magnetic block 6 by the rebound force of the push spring 7, thus allowing the touch screen display 3 to move out of the slot 8. The edge moves out of the limiting groove 2. At this time, the touch screen 3 and the mounting frame 1 are only connected by magnetic block 6, which makes it easy for passengers to take out the touch screen 3. The heat generated inside the touch screen 3 can be conducted to the surface of the heat conduction plate 10 through the heat conduction plate 10. The heat sink 12 can absorb the heat on the surface of the heat conduction plate 10. Then the heat is transferred to the heat sink fin 14 through the heat conduction copper pipe 13. The heat sink fin 14 is cooled by the external air flow, which realizes the heat dissipation of the touch screen 3 and improves its service life. The magnetic piece 11 and the magnetic block 6 can be magnetically connected between the touch screen 3 and the mounting frame 1, which can position the touch screen 3 and connect it to a certain extent.

[0049] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A touch screen display for rail transit trains, including a mounting frame (1), characterized in that: A limiting groove (2) is provided at the center of one side surface of the mounting frame (1). A touch screen (3) is embedded inside the limiting groove (2). The touch screen (3) includes a display bezel (301), tempered glass (302), a touch screen unit (303), a display unit (304), a control motherboard (305), and a power module (306). Limiting components (4) are provided on both sides of the inner wall of the limiting groove (2). Positioning grooves (5) are arranged at the surface edge of the limiting groove (2). A magnetic block (6) is embedded inside the groove (5). The magnetic block (6) is connected to the bottom inner wall of the positioning groove (5) by an ejector spring (7). The end of the magnetic block (6) away from the ejector spring (7) extends to the outside of the positioning groove (5). The limiting component (4) includes a side groove (401), a compression spring (402), a push plate (403), a micro damping rod (404), a movable rod (405), a rack (406), an adjusting rod (407), a gear (408), and an adjusting knob (409). Compression springs (402) are arranged on the inner wall of the side groove (401). A push plate (403) is connected to one end of the compression spring (402) away from the side groove (401). A miniature damping rod (404) is provided on one side of the compression spring (402). The two ends of the miniature damping rod (404) are respectively connected to the inner wall of the side groove (401) and the outer wall of one side of the push plate (403). A movable rod (405) is fixedly connected to the center of the side of the push plate (403) near the inner wall of the side groove (401). The movable rod (405) is slidably connected to the inner wall of the side groove (401). A rack (406) is fixedly connected to the outer wall of one side of the movable rod (405). An adjusting rod (407) is connected to one inner wall of the side groove (401) via a bearing. A gear (408) is fixedly connected to the outer wall of the middle part of one side of the adjusting rod (407). The gear (408) meshes with the rack (406). One top end of the adjusting rod (407) extends to the outside of the mounting frame (1) and is fixedly connected to an adjusting knob (409).

2. The onboard touch display for rail transit trains according to claim 1, characterized in that: Tempered glass (302) is fixedly connected to one side of the surface of the display bezel (301). A touch screen unit (303) is fixedly connected to the outer wall of the tempered glass (302) near the inside of the display bezel (301). A display unit (304) is fixedly connected to the end of the touch screen unit (303) away from the tempered glass (302). A control motherboard (305) is provided on one side of the inner wall of the display bezel (301). A power module (306) is provided on one side of the control motherboard (305).

3. The onboard touch display for rail transit trains according to claim 1, characterized in that: The push plate (403) has a sloping surface (22) at the top of the end away from the movable rod (405). A wireless charging coil (23) is provided on the bottom surface of the sloping surface (22). The outer walls on both sides of the display frame (301) are provided with slots (8). The slots (8) match the push plate (403). A wireless charging receiver module (9) is provided on the inner wall of the slots (8). The wireless charging receiver module (9) matches the wireless charging coil (23).

4. The onboard touch display for rail transit trains according to claim 2, characterized in that: A heat-conducting plate (10) is fixedly connected to the center of the outer wall of the display bezel (301) away from the tempered glass (302). Magnetic absorbing pieces (11) are arranged at the edge of the heat-conducting plate (10). The magnetic absorbing pieces (11) are fixedly connected to the display bezel (301), and the magnetic absorbing pieces (11) are matched with the magnetic absorbing blocks (6).

5. The onboard touch display for rail transit trains according to claim 4, characterized in that: A heat sink (12) is fixedly connected to the inner wall of the center of the limiting groove (2). The heat sink (12) matches the heat conduction plate (10), and both ends of the heat sink (12) are connected to heat conduction copper pipes (13). Heat dissipation fins (14) are provided on the upper and lower outer walls of the mounting frame (1). The end of the heat conduction copper pipe (13) away from the heat sink (12) is connected to the heat dissipation fins (14).

6. The onboard touch display for rail transit trains according to claim 5, characterized in that: A Bluetooth module (15) is provided inside one side of the mounting frame (1), a signal receiver (16) is provided inside one side of the display frame (301), a positioning module (17) is provided on one side of the signal receiver (16), and an alarm (18) is provided on one side of the mounting frame (1).

7. The onboard touch display for rail transit trains according to claim 5, characterized in that: The inner walls of the limiting groove (2) adjacent to the side groove (401) are provided with longitudinal buffer pads (19), and the two sets of longitudinal buffer pads (19) abut against the touch screen (3).

8. The onboard touch display for rail transit trains according to claim 6, characterized in that: The mounting frame (1) and the display bezel (301) are both provided with reinforcing ribs (20), and the mounting frame (1) is provided with mounting holes (21) at its edge.

Images