Vehicle-mounted touch display for rail transit train

Abstract

The invention relates to a rail transit train vehicle-mounted touch displayer, in particular to the technical field of touch displayers, and comprises a mounting frame, a limiting groove is formed in the center of the surface of one side of the mounting frame, and a touch display screen is embedded in the limiting groove; the touch display screen comprises a display frame, tempered glass, a touch screen unit, a display unit, a control mainboard and a power module, limiting assemblies are arranged on the inner walls of the two sides of a limiting groove, positioning grooves are formed in the edge of the surface of the limiting groove, magnetic attraction blocks are embedded in the positioning grooves, and the magnetic attraction blocks are arranged in the limiting grooves. The touch display screen can be embedded into the limiting groove to be fixed and can also be taken out independently, so that passengers can order food or check current route information conveniently, when the problems of touch control failure and abnormal display occur on the screen, the whole equipment panel does not need to be disassembled, the touch display screen is directly taken out for maintenance or replacement, and the downtime is greatly shortened.

Description

Technical Field

[0001] This application relates to the technical field of touch displays, especially the on-vehicle touch display of rail transit trains. Background Art

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

[0003] In the prior art, for the related technology of the on-vehicle touch display of trains, reference can be made to the Chinese patent with the publication number CN111562816A, which discloses a touch display of the intelligent interface for rail transit information management, including an MCU single-chip microcomputer, 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, the audio processing circuit is electrically connected to the differential audio signal receiving circuit, and the image decoding circuit and the audio processing circuit are respectively electrically connected to the MCU single-chip microcomputer; the touch display is respectively electrically connected to the image decoding circuit and the MCU single-chip microcomputer through a display driving circuit, and 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, and a driving board and a step-up board are installed on the back surface of the installation frame; the above invention has the advantages of being convenient for disassembly and installation, greatly improving the working efficiency during transportation and maintenance, and high heat dissipation and condensation efficiency.

[0004] The inventor found the following problems in the prior art during the implementation of this application: In the existing on-vehicle touch displays of trains, they are often of a fixed integrated structure. When passengers need to order food and view train information through the touch display, they often need a specific angle to control. When problems such as touch failure and abnormal display occur on the screen, it is necessary to disassemble the entire device panel to remove the touch display screen for repair or replacement. Summary of the Invention

[0005] The purpose of this application is to provide an on-vehicle touch display for rail transit trains.

[0006] In the first aspect, the on-vehicle touch display for rail transit trains provided by this application adopts the following technical solutions: On-vehicle touch display for rail transit train, including an installation frame. At the center of one side surface of the installation frame, a limiting groove is provided. Inside the limiting groove, a touch display screen is embedded. The touch display screen includes a display frame, tempered glass, a touch screen unit, a display unit, a control main board, and a power module. On both inner walls of the limiting groove, limiting components are provided. At the edge of the surface of the limiting groove, positioning grooves are arranged. Inside the positioning grooves, magnetic attraction blocks are embedded. Between the magnetic attraction blocks and the bottom inner walls of the positioning grooves, they are connected by ejecting springs. One end of the magnetic attraction block away from the ejecting spring extends to the outside of the positioning groove. The limiting components include side grooves, extrusion springs, push plates, micro damping rods, movable rods, racks, adjusting rods, gears, and adjusting knobs.

[0007] By adopting the above technical solutions, the installation frame plays a role in fixed installation and can be fixedly installed on the wall of the business class carriage of the train. The touch display screen can be embedded in the limiting groove for fixation and can also be taken out separately to facilitate passengers to order food or view the current route information. When problems such as touch failure or abnormal display occur on the screen, there is no need to disassemble the entire device panel. The touch display screen can be directly taken out for repair or replacement, greatly shortening the downtime. The limiting components can limit and fix the touch display screen and can also play a role in buffering and protecting the touch display screen. At the same time, through the cooperation of the magnetic attraction blocks and the limiting components, the touch display screen embedded in the limiting groove can be connected and fixed to prevent the touch display screen from separating from the installation frame due to bumps caused by special situations during the train's movement. After the touch display screen is embedded in the limiting groove, it can push the magnetic attraction blocks into the positioning grooves. When it is necessary to take out the touch display screen, the clamping and limiting can be cancelled through the limiting components, and then the magnetic attraction blocks can be ejected by the resilience of the ejecting springs, thereby driving the edge of the touch display screen to move out of the inside of the limiting groove, making it convenient for passengers to take out the touch display screen.

[0008] On one side surface of the display frame, tempered glass is fixedly connected. On the outer wall of the side of the tempered glass close to the inside of the display frame, a touch screen unit is fixedly connected. One end of the touch screen unit away from the tempered glass is fixedly connected to a display unit. On one inner wall of the display frame, a control main board is provided. On one side of the control main board, a power module is provided.

[0009] By adopting the above technical solution, the tempered glass is fixed to one side of the display frame through an epoxy resin adhesive layer, with a thickness of 2.5 mm and a surface hardness of ≥9H, which plays a protective role. The touch screen unit is a capacitive touch film layer and is electrically connected to the control main board 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 main board is connected to the display unit through an LVDS interface. Its internal main control chip is of the ARM Cortex-A73 architecture. The power module uses a DC12V input and is built-in with an overvoltage protection circuit, which is connected to the control main board through copper foil traces.

[0010] The inner wall of the side groove is arranged with extrusion springs. One end of the extrusion spring away from the side groove is connected with a push plate. One side of the extrusion spring is provided with a micro damping rod. The two ends of the micro damping rod are respectively connected with the inner wall of the side groove and the outer wall of one side of the push plate. The center of the side of the push plate close to the inner wall of the side groove is fixedly connected with a movable rod. The movable rod is slidably connected between the inner walls of the side groove. A rack is fixedly connected to the outer wall of one side of the movable rod.

[0011] By adopting the above technical solution, the extrusion spring can support the push plate and can be compressed, contracted and rebound. Through the extrusion spring, the push plate can be pushed outwards of the side groove to clamp and fix the card slot on the side of the display frame, thus realizing the fixed connection of the touch display screen and avoiding the situation that the touch display screen is not stably connected only by magnetic attraction. At the same time, when the train encounters special situations and jolts during high-speed travel, the touch display screen is stressed and generates a certain shock. The shock drives one side of the push plate to move into the side groove, and the extrusion spring is compressed and contracted to absorb the shock. Subsequently, a certain damping effect is generated on the moving push plate through the micro damping rod to offset the shock generated by the rebound of the extrusion spring, avoiding poor contact or loosening of internal components caused by high-frequency vibration of the screen. At the same time, during the movement of the push plate, the movable rod and the rack can be driven to move synchronously in translation.

[0012] One side inner wall of the side groove is connected with an adjusting rod through a bearing. The outer wall of the middle part of one side of the adjusting rod is fixedly connected with a gear. The gear meshes with the rack. The top end of the adjusting rod extends to the outside of the mounting frame and is fixedly connected with an adjusting knob.

[0013] By adopting the above technical solution, when the touch display screen needs to be taken out, the adjusting knob can be twisted. The rotation of the adjusting knob drives the adjusting rod to rotate, thereby driving the gear to rotate synchronously. The rotation of the gear drives the rack to translate, thereby driving the movable rod and the push plate to shrink synchronously, so that the push plate moves out of the card slot. After the touch display screen cancels the limit of the push plate, the rebound force of the ejection spring ejects the magnetic block, thereby driving the edge of the touch display screen to move out of the limit slot. At this time, the touch display screen and the mounting frame are only connected by the magnetic block, which makes it easy for passengers to take out the touch display screen.

[0014] A slope is provided on the top of one end of the push plate away from the movable rod, and a wireless charging coil is provided on the bottom surface of the slope. Card slots are provided on the outer walls on both sides of the display frame, and the card slots match the push plate. A wireless charging receiving module is provided on the inner wall of the card slot, and the wireless charging receiving module matches the wireless charging coil.

[0015] By adopting the above technical solution, the setting of the inclined surface allows the touch display screen to be directly embedded in the limit groove during installation. The inclined surface of the push plate surface will be pushed to move horizontally into the side groove when the touch display screen moves to the bottom surface of the limit groove, and the card slot and the push plate just match, so that the push plate is embedded in the card slot for limited fixation. At the same time, when the push plate and the card slot are in close contact, the wireless charging coil can automatically cooperate with the wireless charging receiving module to automatically power the power module of the touch display screen.

[0016] A heat conduction plate is fixedly connected to the center of the outer wall of one side of the display frame away from the tempered glass, and magnetic sheets are arranged at the edge of the heat conduction plate. The magnetic sheets are fixedly connected to the display frame, and the magnetic sheets match the magnetic blocks.

[0017] By adopting the above technical solution, the heat generated inside the touch screen can be conducted to the surface of the heat conduction plate through the heat conduction plate to facilitate heat dissipation. The mutual adsorption of the magnetic sheet and the magnetic block can enable the touch screen to be magnetically connected to the mounting frame, which can position the touch screen and connect it to a certain extent at the same time.

[0018] A heat sink is fixedly connected to the inner wall at the center of the limiting groove, the heat sink matches the heat conducting plate, and both ends of the heat sink are connected to heat conducting copper tubes, and the upper and lower outer walls of the mounting frame are provided with heat sink fins, and the end of the heat conducting copper tube away from the heat sink is connected to the heat sink fins.

[0019] By adopting the above technical solution, the heat on the surface of the heat conducting plate can be absorbed by the heat sink, and then the heat is transmitted to the heat dissipation fins through the heat conducting copper tube. The heat dissipation fins are dissipated by the external air flow to achieve the heat dissipation effect on the touch screen and improve the service life.

[0020] One side inside the installation frame is provided with a Bluetooth module, one side inside the display frame is provided with a signal receiver, one side of the signal receiver is provided with a positioning module, and one side of the installation frame is provided with an alarm.

[0021] By adopting the above technical solution, the Bluetooth module adopts the low-power Bluetooth 5.2 protocol, and the transmission power is adjustable from -20 dBm to +10 dBm, which is 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 indication and data packets. The Bluetooth module periodically broadcasts beacon signals. The positioning module includes a positioning chip and a ceramic antenna, and the positioning accuracy is ≤30 cm, which is used to obtain the real-time position coordinates of the touch display screen 3. The signal receiver analyzes the RSSI value and calculates the relative distance from the installation frame. When the distance exceeds a preset threshold, such as 10 meters, the control board triggers the buzzer and LED light of the alarm.

[0022] Longitudinal buffer pads are arranged on both inner walls of the limiting slots adjacent to the side slots, and the two groups of longitudinal buffer pads are in contact with the touch display screen.

[0023] By adopting the above technical solution, the longitudinal buffer pads can buffer the longitudinal vibration of the touch display screen and improve the reliability of the device.

[0024] Reinforcing ribs are arranged inside both the installation frame and the display frame, and installation holes are arranged at the edges of the installation frame.

[0025] By adopting the above technical solution, the reinforcing ribs can improve the strength of the installation frame and the display frame, enhance the compressive capacity of the touch display screen, and the installation holes can be used for the installation and fixing of the installation frame.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The installation frame plays a role in fixed installation and can be fixedly installed on the wall surface of the business class carriage of the train. The touch display screen can be embedded in the limiting slot for fixation and can also be taken out separately, so as to facilitate passengers to order food or view the current route information. When problems such as touch failure and abnormal display occur on the screen, there is no need to disassemble the entire device panel, and the touch display screen can be directly taken out for repair or replacement, greatly shortening the downtime. The limiting component can limit and fix the touch display screen and can also play a role in buffering and protecting the touch display screen. At the same time, the magnetic attraction block cooperates with the limiting component to connect and fix the touch display screen embedded in the limiting slot, avoiding the separation of the touch display screen from the installation frame due to bumps caused by special situations during the train's travel; 2. When it is necessary to take out the touch display screen, the adjustment knob can be twisted. The rotation of the adjustment knob drives the adjustment rod to rotate, thereby driving the gear to rotate synchronously. The rotation of the gear drives the rack to perform a translational movement, thereby driving the movable rod and the push plate to contract synchronously. As a result, the push plate moves out of the card slot. After the touch display screen cancels the limit of the push plate, the magnetic attraction block is ejected by the resilience of the ejection spring, thereby driving the edge of the touch display screen to move out of the limit slot. At this time, the touch display screen and the installation frame are only connected by magnetic attraction of the magnetic attraction block, which is convenient for passengers to take out the touch display screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall three-dimensional structure of an embodiment of the present application; Figure 2 is a schematic diagram of the connection structure between the installation frame and the touch display screen of an embodiment of the present application; Figure 3 is a schematic three-dimensional structure diagram of the touch display screen of an embodiment of the present application; Figure 4 is a schematic front view structure diagram of the installation frame of an embodiment of the present application; Figure 5 is a schematic diagram of the connection structure of the limit component of an embodiment of the present application; Figure 6 is a schematic rear view structure diagram of the touch display screen of an embodiment of the present application; Figure 7 is a schematic diagram of the internal installation structure of the touch display screen of an embodiment of the present application; Figure 8 is a schematic diagram of the connection structure between the magnetic attraction block and the ejection spring of an embodiment of the present application.

[0028] DESCRIPTION OF THE REFERENCE NUMERALS: 1. Installation frame; 2. Limit slot; 3. Touch display screen; 301. Monitor frame; 302. Tempered glass; 303. Touch screen unit; 304. Display unit; 305. Control main board; 306. Power module; 4. Limit component; 401. Side slot; 402. Extrusion spring; 403. Push plate; 404. Micro damping rod; 405. Movable rod; 406. Rack; 407. Adjustment rod; 408. Gear; 409. Adjustment knob; 5. Positioning slot; 6. Magnetic attraction block; 7. Ejection spring; 8. Card slot; 9. Wireless charging receiving module; 10. Heat conduction plate; 11. Magnetic attraction sheet; 12. Heat sink; 13. Heat conduction copper pipe; 14. Heat dissipation fin; 15. Bluetooth module; 16. Signal receiver; 17. Positioning module; 18. Alarm; 19. Longitudinal buffer pad; 20. Reinforcing rib; 21. Installation hole; 22. Inclined surface; 23. Wireless charging coil. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following is combined with the attached Figure 1 - attached Figure 8, a further detailed description of the present application will be given.

[0030] Embodiment: An on-vehicle touch display for a rail transit train, including a mounting frame 1. A limiting groove 2 is provided at the center of one side surface of the mounting frame 1. A touch display screen 3 is embedded in the limiting groove 2. Limiting components 4 are provided on both inner walls of the limiting groove 2. Positioning grooves 5 are arranged at the surface edge of the limiting groove 2. A magnetic attraction block 6 is embedded in the positioning groove 5. The magnetic attraction block 6 is connected to the bottom inner wall of the positioning groove 5 through an ejecting spring 7. One end of the magnetic attraction block 6 away from the ejecting spring 7 extends to the outside of the positioning groove 5. The mounting frame 1 plays a role in fixed installation and can be fixedly installed on the wall surface of the business-class carriage of the train. The touch display screen 3 can be embedded in the limiting groove 2 for fixation and can also be taken out separately, so as to facilitate passengers to order food or view the current route information. When problems such as touch failure or abnormal display occur on the screen, there is no need to disassemble the entire device panel, and the touch display screen 3 can be directly taken out for repair or replacement, greatly shortening the downtime. The limiting components 4 can limit and fix the touch display screen 3 and can also play a role in buffering and protecting the touch display screen 3. At the same time, the magnetic attraction block 6 cooperates with the limiting components 4 to connect and fix the touch display screen 3 embedded in the limiting groove 2, avoiding the separation of the touch display screen 3 from the mounting frame 1 due to bumps caused by special situations during the train's movement. After the touch display screen 3 is embedded in the limiting groove 2, it can push the magnetic attraction block 6 into the positioning groove 5. When the touch display screen 3 needs to be taken out, the clamping limit can be cancelled through the limiting components 4, and then the magnetic attraction block 6 can be ejected by the resilience of the ejecting spring 7, thereby driving the edge of the touch display screen 3 to move out of the inside of the limiting groove 2, so as to facilitate passengers to take out the touch display screen 3.

[0031] The touch display screen 3 includes a display frame 301, a tempered glass 302, a touch screen unit 303, a display unit 304, a control main board 305 and a power module 306. On one side of the surface of the display frame 301, the tempered glass 302 is fixedly connected. On the outer wall of the side of the tempered glass 302 close to the inside of the display frame 301, the touch screen unit 303 is fixedly connected. At the end of the touch screen unit 303 away from the tempered glass 302, the display unit 304 is fixedly connected. On one inner wall of the display frame 301, the control main board 305 is arranged. On one side of the control main board 305, the power module 306 is arranged. The tempered glass 302 is fixed to one side of the display frame 301 through an epoxy resin adhesive layer, with a thickness of 2.5 mm and a surface hardness ≥ 9H, which plays a protective role. The touch screen unit 303 is a capacitive touch film layer and is electrically connected to the control main board 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 main board 305 is connected to the display unit 304 through an LVDS interface, and its internal main control chip is of the ARM Cortex-A73 architecture. The power module 306 uses a DC12V input, has an overvoltage protection circuit built-in, and is connected to the control main board 305 through copper foil traces.

[0032] 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. The inner wall of the side groove 401 is arranged with compression springs 402. One end of the compression spring 402 away from the side groove 401 is connected to a push plate 403. One side of the compression spring 402 is provided with a micro damping rod 404. Both ends of the micro 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. The center of the side of the push plate 403 close to the inner wall of the side groove 401 is fixedly connected with a movable rod 405. The movable rod 405 is slidably connected with the inner wall of the side groove 401. The outer wall of one side of the movable rod 405 is fixedly connected with a rack 406. One side inner wall of the side groove 401 is connected with an adjusting rod 407 through a bearing. The outer wall of the middle part of one side of the adjusting rod 407 is fixedly connected with a gear 408. The gear 408 is engaged with the rack 406. The top end of the adjusting rod 407 extends to the outside of the mounting frame 1 and is fixedly connected with an adjusting knob 409. The compression spring 402 can support the push plate 403 and can be compressed, contracted and rebounded. Through the compression spring 402, the push plate 403 can be pushed out of the side groove 401 to be clamped and fixed to the card slot 8 on the side of the display frame 301, so as to realize the fixed connection of the touch display screen 3, avoiding the situation that the touch display screen 3 is not stably connected only by magnetic attraction. At the same time, when the train encounters special situations and jolts during high-speed travel, the touch display screen 3 is stressed and generates a certain vibration. The vibration drives one side push plate 403 to move into the side groove 401. The compression spring 402 is compressed and contracted to absorb the vibration. Then, a certain damping effect is generated on the moving push plate 403 through the micro damping rod 404 to offset the vibration generated by the rebound of the compression spring 402, avoiding poor contact or loosening of internal components caused by high-frequency vibration of the screen. At the same time, during the movement of the push plate 403, the movable rod 405 can be driven to perform synchronous translational movement with the rack 406. When it is necessary to take out the touch display screen 3, the adjusting knob 409 can be twisted. The rotation of the adjusting knob 409 drives the adjusting rod 407 to rotate, thereby driving the gear 408 to rotate synchronously. The rotation of the gear 408 drives the rack 406 to perform translational movement, thereby driving the movable rod 405 and the push plate 403 to contract synchronously, so that the push plate 403 moves out of the card slot 8. After the push plate 403 releases the limit of the touch display screen 3, the magnetic attraction block 6 is pushed out by the resilience of the ejecting spring 7, thereby driving the edge of the touch display screen 3 to move out of the limit groove 2. At this time, the touch display screen 3 and the mounting frame 1 are only connected by magnetic attraction of the magnetic attraction block 6, so as to facilitate the passenger to take out the touch display screen 3.

[0033] The top of the end of the push plate 403 away from the movable rod 405 is provided with an inclined surface 22, and the bottom surface of the inclined surface 22 is provided with a wireless charging coil 23. The outer walls of both sides of the display frame 301 are provided with card slots 8, and the card slots 8 match the push plate 403. The inner wall of the card slot 8 is provided with a wireless charging receiving module 9, and the wireless charging receiving module 9 matches the wireless charging coil 23. The setting of the inclined surface 22 allows the touch display screen 3 to be directly embedded in the limit groove 2 during installation. The inclined surface 22 on the surface of the push plate 403 is pressed to push the push plate 403 to translate into the side groove 401. When the touch display screen 3 moves to the bottom surface of the limit groove 2, the card slot 8 and the push plate 403 are just matched, so that the push plate 403 is embedded in the card slot 8 for limit fixing. At the same time, when the push plate 403 is in close contact with the card slot 8, the wireless charging coil 23 can automatically cooperate with the wireless charging receiving module 9 to automatically power the power module 306 of the touch display screen 3.

[0034] A heat conducting plate 10 is fixedly connected to the center of the outer wall of the display frame 301 away from the tempered glass 302, and a magnetic sheet 11 is arranged at the edge of the heat conducting plate 10. The magnetic sheet 11 is fixedly connected to the display frame 301, and the magnetic sheet 11 matches the magnetic block 6. A heat sink 12 is fixedly connected to the inner wall at the center of the limiting groove 2, and the heat sink 12 matches the heat conducting plate 10, and both ends of the heat sink 12 are connected to a heat conducting copper tube 13. The upper and lower outer walls of the mounting frame 1 are both provided with heat dissipation fins 14, and the end of the heat conducting copper tube 13 away from the heat sink 12 is connected to the heat dissipation fin 14 Then, the heat generated inside the touch display screen 3 can be conducted to the surface of the heat conducting plate 10 through the heat conducting plate 10, and the heat on the surface of the heat conducting plate 10 can be absorbed by the heat sink 12. Then the heat is transmitted to the heat dissipation fins 14 through the heat conducting copper tube 13. The heat dissipation fins 14 are dissipated by the external air flow to achieve the heat dissipation effect on the touch display screen 3 and improve the service life. The mutual adsorption of the magnetic sheet 11 and the magnetic block 6 can enable the touch display screen 3 to be magnetically connected to the mounting frame 1, and can position the touch display screen 3 and connect it to a certain extent at the same time.

[0035] Inside one side of the installation frame 1, there is a Bluetooth module 15. Inside one side of the display frame 301, there is a signal receiver 16. One side of the signal receiver 16 is provided with a positioning module 17. One side of the installation frame 1 is provided with an alarm 18. The Bluetooth module 15 adopts the low-power Bluetooth 5.2 protocol, and the transmit power is adjustable from -20 dBm to +10 dBm, which is used to establish two-way communication with external devices. The signal receiver 16 operates in the same frequency band as the Bluetooth module 15 and is used to receive Bluetooth signal strength indication and data packets. The Bluetooth module 15 periodically broadcasts beacon signals. The positioning module 17 includes a positioning chip and a ceramic antenna, and the positioning accuracy is ≤ 30 cm, which is used to obtain the real-time position coordinates of the touch display screen 3. The signal receiver 16 analyzes the RSSI value and calculates the relative distance from the installation frame 1. When the distance exceeds a preset threshold, such as 10 meters, the control main board 305 triggers the buzzer and LED light of the alarm 18.

[0036] On both inner walls of the limiting groove 2 adjacent to the side groove 401, there are longitudinal buffer pads 19. The two groups of longitudinal buffer pads 19 are in contact with the touch display screen 3. Inside both the installation frame 1 and the display frame 301, there are reinforcing ribs 20. At the edge of the installation frame 1, there are installation holes 21. Through the longitudinal buffer pads 19, the longitudinal vibration of the touch display screen 3 can be buffered, improving the reliability of the device. Through the reinforcing ribs 20, the strength of the installation frame 1 and the display frame 301 can be improved, enhancing the compressive capacity of the touch display screen 3. Through the installation holes 21, the installation and fixation of the installation frame 1 can be carried out.

[0037] The implementation principle of the embodiment of the present application is as follows: first, the installation frame 1 plays a role of fixed installation, and can be fixedly installed on the wall of the business class compartment of the train. The touch display screen 3 can be embedded in the limit groove 2 for fixation, and can also be taken out separately, so as to facilitate passengers to order meals or view the current route information. When the screen has touch failure or display abnormality, there is no need to disassemble the entire device panel, and the touch display screen 3 can be directly taken out for repair or replacement, which greatly shortens the downtime. The limit component 4 can limit and fix the touch display screen 3 while playing a role of buffering and protecting the touch display screen 3. At the same time, the magnetic suction block 6 cooperates with the limit component 4 to connect and fix the touch display screen 3 embedded in the limit groove 2, so as to avoid special situations during the movement of the train. The situation causes bumps, which separates the touch screen 3 from the mounting frame 1. After the touch screen 3 is embedded in the limit groove 2, it can push the magnetic block 6 to embed into the positioning groove 5. When the touch screen 3 needs to be taken out, the clamping limit can be cancelled through the limit assembly 4, and then the magnetic block 6 is ejected by the rebound force of the ejection spring 7, thereby driving the edge of the touch screen 3 to move out of the limit groove 2, so as to facilitate the passengers to take out the touch screen 3. When the train encounters special circumstances and bumps during high-speed travel, the touch screen 3 is subjected to force to produce a certain vibration, and the vibration drives one side push plate 403 to move into the side groove 401, and the extrusion spring 402 is compressed and contracted to absorb the vibration, and then the moving push plate 403 is exerted a certain amount of force through the micro damping rod 404. The damping effect offsets the shock caused by the rebound of the extrusion spring 402, thereby preventing the screen from having poor contact or loose internal components due to high-frequency vibration. At the same time, the push plate 403 can drive the movable rod 405 and the rack 406 to perform synchronous translational movement during the movement. When the touch display screen 3 needs to be taken out, the adjustment knob 409 can be twisted. The rotation of the adjustment knob 409 drives the adjustment rod 407 to rotate, thereby driving the gear 408 to rotate synchronously. The rotation of the gear 408 drives the rack 406 to perform translational movement, thereby driving the movable rod 405 and the push plate 403 to shrink synchronously, thereby making the push plate 403 move out of the card slot 8. After the touch display screen 3 cancels the limit of the push plate 403, the magnetic suction block 6 is ejected by the rebound force of the ejection spring 7, thereby driving the touch display screen 3. The edge moves out of the limit 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 the passenger to take out the touch screen 3. The heat generated inside the touch screen 3 can be exported to the surface of the heat conducting plate 10 through the heat conducting plate 10, and the heat on the surface of the heat conducting plate 10 can be absorbed by the heat sink 12. Then the heat is transmitted to the heat dissipation fins 14 through the heat conducting copper tube 13. The heat dissipation fins 14 are dissipated by the external air flow to achieve the heat dissipation effect of the touch screen 3 and improve the service life. The mutual adsorption of the magnetic sheet 11 and the magnetic block 6 can make the touch screen 3 and the mounting frame 1 magnetically connected, and the touch screen 3 can be positioned and connected to it to a certain extent.

[0038] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A touch display mounted on a rail transit train, comprising a mounting frame (1), characterized in that: A limiting groove (2) is provided at the center of a surface of one side of the installation frame (1), a touch display screen (3) is embedded in the limiting groove (2), and the touch display screen (3) comprises a display frame (301), a tempered glass (302), a touch screen unit (303), a display unit (304), a control mainboard (305) and a power module (306), limiting components (4) are provided on both inner walls of the limiting groove (2), and positioning grooves (5) are arranged at the surface edge of the limiting groove (2), and the positioning grooves (5) are arranged at the edges of the surfaces of the limiting groove (2). A magnetic block (6) is embedded in the groove (5), and the magnetic block (6) is connected to the bottom inner wall of the positioning groove (5) via an ejection spring (7). One end of the magnetic block (6) away from the ejection spring (7) extends to the outside of the positioning groove (5). The limit assembly (4) comprises a side groove (401), an extrusion spring (402), a push plate (403), a micro damping rod (404), a movable rod (405), a rack (406), an adjustment rod (407), a gear (408) and an adjustment knob (409).

2. The rail transit train onboard touch display according to claim 1, characterized in that: A tempered glass (302) is fixedly connected to one side of the surface of the display frame (301); a touch screen unit (303) is fixedly connected to an outer wall of a side of the tempered glass (302) close to the inside of the display frame (301); an end of the touch screen unit (303) away from the tempered glass (302) is fixedly connected to a display unit (304); a control mainboard (305) is provided on an inner wall of one side of the display frame (301); and a power supply module (306) is provided on one side of the control mainboard (305).

3. The rail transit train onboard touch display according to claim 1, characterized in that: An extrusion spring (402) is arranged on the inner wall of the side groove (401), and one end of the extrusion spring (402) away from the side groove (401) is connected to a push plate (403). A micro damping rod (404) is arranged on one side of the extrusion spring (402), and two ends of the micro 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 one side of the push plate (403) close to the inner wall of the side groove (401), and the movable rod (405) is slidably connected to the inner wall of the side groove (401), and a rack (406) is fixedly connected to the outer wall of one side of the movable rod (405).

4. The rail transit train onboard touch display according to claim 3, characterized in that: An inner wall of one side of the side groove (401) is connected to an adjusting rod (407) via a bearing, a gear (408) is fixedly connected to an outer wall in the middle of one side of the adjusting rod (407), the gear (408) is meshed with a rack (406), and a 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).

5. The rail transit train onboard touch display according to claim 3, characterized in that: An inclined surface (22) is arranged at the top of one end of the push plate (403) away from the movable rod (405), and a wireless charging coil (23) is arranged on the bottom surface of the inclined surface (22). Card slots (8) are arranged on the outer walls of both sides of the display frame (301), and the card slots (8) match the push plate (403). A wireless charging receiving module (9) is arranged on the inner wall of the card slot (8), and the wireless charging receiving module (9) matches the wireless charging coil (23).

6. The rail transit train onboard touch display according to claim 2, characterized in that: A heat conduction plate (10) is fixedly connected to the center of the outer wall of the display frame (301) away from the tempered glass (302), and magnetic suction plates (11) are arranged at the edge of the heat conduction plate (10). The magnetic suction plates (11) are fixedly connected to the display frame (301), and the magnetic suction plates (11) match the magnetic suction blocks (6).

7. The rail transit train onboard touch display according to claim 6, characterized in that: A heat sink (12) is fixedly connected to the inner wall at 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 tubes (13), and both upper and lower outer walls of the mounting frame (1) are provided with heat sink fins (14), and one end of the heat conducting copper tube (13) away from the heat sink (12) is connected to the heat sink fins (14).

8. The rail transit train onboard touch display according to claim 7, characterized in that: A Bluetooth module (15) is disposed inside one side of the installation frame (1), a signal receiver (16) is disposed inside one side of the display frame (301), a positioning module (17) is disposed on one side of the signal receiver (16), and an alarm (18) is disposed on one side of the installation frame (1).

9. The rail transit train onboard touch display according to claim 7, characterized in that: Longitudinal buffer pads (19) are provided on the inner walls on both sides of the limiting groove (2) adjacent to the side groove (401), and two groups of the longitudinal buffer pads (19) are in contact with the touch display screen (3).

10. The rail transit train onboard touch display according to claim 8, characterized in that: Reinforcing ribs (20) are provided inside the mounting frame (1) and the display frame (301), and mounting holes (21) are provided at the edges of the mounting frame (1).

Images