Industrial touch all-in-one machine with wide-temperature self-adaptive backlight adjustment function

Abstract

The application belongs to the technical field of industrial touch screen, and particularly relates to an industrial touch all-in-one machine with a wide-temperature self-adaptive backlight adjusting function. In view of the problem that the industrial touch screen in the prior art does not have the function of coping with extremely cold environment, the following scheme is proposed, including a rear cover with an opening upward and a box-shaped structure as a whole, a main installation panel is fixed at the top opening of the rear cover, a fixed clamping frame is embedded in the upper surface of the main installation panel, a display screen module and a light guide plate are fixed in the fixed clamping frame and are stacked together, a supporting plate is fixed at the bottom of the fixed clamping frame, and light guide holes which are adapted to the thickness and position of the light guide plate are reserved on the two opposite sides of the fixed clamping frame. The liquid in the liquid containing soft bag can be heated, and then the two extension channels are simultaneously moved to the middle, the surface of the liquid containing soft bag after being extruded is tightly attached to the surface of the supporting plate, heat conduction is rapidly conducted, and the working temperature of the display screen module is not too low.

Description

Technical Field

[0001] This invention relates to the field of industrial touch screen technology, and in particular to an industrial touch all-in-one machine with wide temperature adaptive backlight adjustment function. Background Technology

[0002] Wide-temperature touchscreen all-in-ones are typically used in environments with significant temperature variations, such as industrial production, traffic monitoring, or outdoor equipment. They are designed to ensure stable operation over a wide temperature range, maintaining high performance, especially in extreme temperature environments.

[0003] A search revealed a Chinese patent application with patent number CN222748916U, which discloses an industrial touch screen all-in-one machine with rear-shell heat dissipation, relating to the field of industrial technology. The device includes a capacitive touchscreen, an aluminum frame fixedly mounted at the top center of the capacitive touchscreen, an LCD screen fixedly mounted at the center of the inner surface of the aluminum frame, a rear cover plate fixedly connected to the top of the aluminum frame, a computer motherboard fixedly mounted at the top center of the rear cover plate, and a CPU heatsink fixedly connected to the top center of the computer motherboard. Although the device has a rear cover plate for heat dissipation, it lacks an adaptive module for handling extremely cold conditions. Summary of the Invention

[0004] To overcome the problem that existing industrial touch screens lack the ability to withstand extremely cold environments, this invention provides an industrial touch all-in-one machine capable of rapidly heating the backlight module under extremely cold conditions:

[0005] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:

[0006] Specifically, an industrial touch screen all-in-one machine with wide-temperature adaptive backlight adjustment function is provided, including a rear cover with an upward-opening, box-shaped structure. A main mounting panel is fixed at the top opening of the rear cover, and a fixing frame is embedded in the middle of the upper surface of the main mounting panel. A display module and a light guide plate stacked together are fixed in the fixing frame. A support plate is fixed at the bottom of the fixing frame. Light guide holes adapted to the thickness and position of the light guide plate are reserved on both opposite sides of the fixing frame. V-shaped refraction plates with opposite openings and symmetrical to each other are fixed on the opposite sides of the fixing frame near the corresponding light guide holes. Dimming channels are provided on the lower surface of the support plate for both V-shaped refraction plates. The dimming channel has two parallel U-shaped slot plates with their openings facing a V-shaped refraction plate on the same side. The two U-shaped slot plates on the same extension channel are slidably connected to each other and can be stretched horizontally at the same time. The extension channel includes two parallel U-shaped slot plates with their openings facing a V-shaped refraction plate on the same side. The same LED light strip is fixed between the two U-shaped slot plates on the same extension channel and the end of the slot plate away from the slot opening. A fixed carrier plate is fixed below the support plate and is parallel to the support plate. A liquid holding soft bag is fixed between the upper surface of the fixed carrier plate and the support plate. The liquid holding soft bag is filled with antifreeze liquid. The middle of the support plate is reserved in the middle of the liquid holding soft bag and a downward recessed part is provided in the recessed part. An electric heater is provided in the recessed part.

[0007] A further feature of this invention is that side baffles are fixed at both ends of the V-shaped refractive plate, and the dimming channel includes two T-shaped strips with parallel main surfaces. Each of the two T-shaped strips has a black frosted surface on one side facing each other. T-shaped connecting plates for fixing the two are fixed between the two ends of the two U-shaped slot plates of the extension channel two. A fixing block is fixed to the side of the T-shaped connecting plates at both ends of the same extension channel two away from the LED strip. A reset spring is fixed to the side of the fixing block one closest to the side baffle on its side. The other end of the reset spring is fixed to the corresponding side baffle. This ensures that when the extension channel two and the LED strip do not need to be pulled towards the center, the extension channel two can be tightly attached to the port of the V-shaped refractive plate on its side to maintain stable light source. Furthermore, when the two extension channels two are pulled towards the center, the T-shaped strips with black frosted surfaces, i.e., the dimming channel, are exposed, and the light is absorbed, thus reducing screen brightness.

[0008] A further feature of this invention is that symmetrical shovels are fixed to the bottom edges of the LED light strips on opposite sides of the two extended channels, and the two shovels are rounded at the sides near the liquid-containing soft bags. Symmetrical anti-reverse racks are reserved in the middle of the left and right ends of the fixed carrier plate, and the anti-reverse racks are located below the corresponding dimming channels. Anti-reverse pawls are hinged to the lower surface of the U-shaped slot plate near the bottom, and a clamping spring is fixed to the upper surface of the anti-reverse pawl at the end away from the hinge point. The other end of the clamping spring is fixed to the lower surface of the U-shaped slot plate. Electromagnets are fixed to the lower surface of the U-shaped slot plate near the bottom at the end near the anti-reverse pawl, and a suction block that attracts the electromagnet when energized is fixed to the end of the anti-reverse pawl.

[0009] A further feature of this invention is that a mounting plate is fixed to the bottom inner wall of the rear cover, and parallel double-axis support frames are fixed to the upper surface of the mounting plate near the front and rear ends respectively. Coaxial and equal-height coiling rods are respectively provided at the top of the double-axis support frames, and the coiling rods are located between two T-shaped connecting plates at the same end of the two extension channels. Driven pulleys and winding pulleys are respectively fixed to both ends of the coiling rods. Two centrally symmetrical adjusting ropes are fixed to the outer circumference of the winding pulleys. The two adjusting ropes are respectively fixed to the T-shaped connecting plates at the ends of the left and right extension channels. When the two coiling rods are rotated simultaneously in the same direction, they can be synchronously pulled towards the middle. The second extension channel will then gradually reveal the dimming channel and squeeze the liquid-containing soft bag in the middle. The bottom ends of the two dual-axis support frames are rotatably connected by the same transmission rod, and the two ends of the transmission rod are respectively provided with driving pulleys that are connected to the driven pulleys. The same toothed conveyor belt is wound between the driving pulleys and the corresponding driven pulleys. A servo motor is fixed at one end of the transmission rod. When it is necessary to control the second extension channel on both sides of the tray and the LED light strip to squeeze towards the middle synchronously, it is only necessary to start the servo motor. When it is necessary to reset, the two electromagnets are energized first and then the servo motor is started in reverse.

[0010] A further feature of this invention is that a start button is provided at one corner of the main mounting panel, and a stepped recess for mounting a fixing frame is provided in the middle of the main mounting panel. An outwardly extending edge frame is reserved around the upper surface of the fixing frame. The display module, the fixing frame, and the upper surface of the main mounting panel are flush. A stepped mounting groove is reserved at the edge of the rear cover, and a power socket, a heat dissipation hole, and a signal input port are respectively provided in the stepped mounting groove. A motherboard, a temperature sensor, and a controller are provided inside the rear cover. Through the set temperature sensor and controller, the ambient temperature can be accurately monitored in order to control the electromagnet and servo motor.

[0011] A further feature of this invention is that the upper surface of the support plate has pre-drilled cuts near the light guide holes at both ends, and the left and right ends of the light guide plate are provided with light-collecting ends with increased thickness and shapes matching the cuts near the light guide holes. The two ends of the support plate away from the V-shaped refractor are respectively fixed with L-shaped fixing plates, and the other end of the L-shaped fixing plates is fixed to the lower surface of the support plate by screws. Through the cuts and the light-collecting ends at both ends of the light guide plate, the absorption capacity of reflected light can be improved.

[0012] A further feature of this invention is that one-way valves in opposite directions are inserted into the surface of the fixed carrier plate and the bottom center of the recess, respectively. The ends of the two one-way valves away from the liquid-containing soft bag are respectively connected to a discharge pipe and a liquid inlet pipe. The sides of the rear cover are respectively provided with threaded pipes for fixing the outlets of the discharge pipe and the liquid inlet pipe. The liquid flowing through the one-way valve at the end of the discharge pipe is output in one direction, and a top tube is fixed to the top of the one-way valve. The top of the top tube is spherically treated to prevent the liquid-containing soft bag from being burst. The top of the top tube is higher than the highest point of the liquid-containing soft bag in the normal state, so that the internal air can be discharged to the maximum extent when replenishing the liquid.

[0013] A further feature of this invention is that the liquid-containing soft bag is made of a transparent material, and an observation window is provided on the side of the back cover away from the V-shaped refractive plate. The height of the observation window is adapted to the position of the liquid-containing soft bag. When the cooling liquid needs to be replaced or replenished, the replenishment status can be observed through the observation window from the outside, which can facilitate maintenance without disassembly.

[0014] A further feature of the present invention is that rectangular protrusions are reserved at both ends of the tray away from the two light guide holes, and rectangular insertion holes for snapping the rectangular protrusions are opened on both inner walls of the fixing frame away from the light guide holes, which facilitates the snapping and installation of the tray.

[0015] A further feature of this invention is that anti-derailment grooves are reserved on both sides of the fixed card frame above the light guide hole, and anti-derailment protrusions that match the shape of the anti-derailment grooves are reserved on the top of the V-shaped refractive plate. During installation, it is only necessary to slide and push it in from the side and ensure that the two ends are aligned.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. By using a liquid-containing soft bag set on the back of the tray, along with two extension channels on both sides that can extend and retract synchronously towards the center and an LED light strip, when the surface of the display module is in an extremely cold environment, the liquid in the liquid-containing soft bag can be heated. Then, the two extension channels move towards the center at the same time, and the surface of the liquid-containing soft bag, after being squeezed, will stick tightly to the surface of the tray, which is conducive to rapid heat conduction, thereby preventing the operating temperature of the display module from becoming too low.

[0018] 2. By setting up dimming channels with black frosted surfaces on the inner walls of both sides, when the brightness of the display module needs to be dimmed, only two LED light strips need to be pulled to the middle at the same time. At this time, the light needs to be absorbed and weakened by the dimming channels before it can be reflected into the light guide plate by the V-shaped refractor. Finally, the light intensity is attenuated. This dimming method makes the change in light intensity very smooth, without involving changes in current, and can also simplify the circuit and reduce energy consumption.

[0019] 3. With the help of the anti-reverse pawl and electromagnet, when the shovels on both sides of the pallet move towards the center at the same time and squeeze the liquid container bag to the back of the pallet, the anti-reverse pawl will lock the position to prevent the expansion force of the liquid container bag from pushing the LED light strip and shovels back to their original position after the traction force is removed. In addition, the two also play a stabilizing role for the light source. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an industrial touch screen all-in-one machine with wide temperature adaptive backlight adjustment function proposed in this invention;

[0021] Figure 2 This is a schematic diagram of the back structure of an industrial touch screen all-in-one machine with wide temperature adaptive backlight adjustment function proposed in this invention;

[0022] Figure 3 This is a side view of an industrial touch screen all-in-one machine with wide-temperature adaptive backlight adjustment function proposed in this invention;

[0023] Figure 4 This invention proposes an industrial touch screen all-in-one machine with wide-temperature adaptive backlight adjustment function. Figure 3 Schematic diagram of the cross-sectional structure along line AA;

[0024] Figure 5 This invention proposes an industrial touch screen all-in-one machine with wide-temperature adaptive backlight adjustment function. Figure 4 Enlarged structural diagram at point B;

[0025] Figure 6 This is an exploded view of an industrial touch screen all-in-one machine with wide-temperature adaptive backlight adjustment function proposed in this invention;

[0026] Figure 7 This is an exploded view of the backlight module and cooling mechanism in an industrial touch screen all-in-one machine with wide-temperature adaptive backlight adjustment function proposed in this invention.

[0027] Figure 8 This is a schematic diagram of the internal structure of an industrial touch screen all-in-one machine with wide temperature adaptive backlight adjustment function proposed in this invention during normal operation.

[0028] Figure 9 This is a cross-sectional structural diagram of an industrial touch screen all-in-one machine with wide temperature adaptive backlight adjustment function proposed in this invention, when the tray is heated.

[0029] Figure 10 This is an assembly diagram of the light guide plate, fixing frame, and tray in an industrial touch screen all-in-one machine with wide temperature adaptive backlight adjustment function proposed in this invention.

[0030] Figure 11 This is an exploded view of the V-shaped refractive plate and dimming channel in an industrial touch screen all-in-one machine with wide temperature adaptive backlight adjustment function proposed in this invention.

[0031] In the diagram: 1. Main mounting panel; 101. Start button; 102. Stepped recess; 2. Fixing frame; 201. Anti-derailment groove; 202. Rectangular insertion hole; 3. Display module; 4. Rear cover; 401. Observation window; 402. Power socket; 403. Heat dissipation hole; 404. Signal input port; 5. Liquid inlet pipe; 6. Discharge pipe; 7. Mounting plate base; 8. Transmission rod; 9. Light guide plate; 10. Support plate; 1001. Rectangular protrusion; 11. Electric heater; 12. 13. Liquid container soft bag; 14. Top pipe; 15. V-shaped refractor; 16. Fixed carrier plate; 17. Anti-reverse rack; 18. L-shaped fixed hanging plate; 19. Recessed part; 20. Dimming channel; 21. Extension channel two; 22. LED light strip; 23. Shovel plate; 24. Anti-reverse pawl; 25. Electromagnet; 26. Double shaft support frame; 27. Side baffle; 28. Adjustable pull rope; 29. ​​Winding rod; 20. Servo motor; 21. Toothed conveyor belt; 22. T-shaped connecting plate. Detailed Implementation

[0032] The technical solutions 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.

[0033] In this embodiment, refer to Figures 1-11An industrial touch screen all-in-one machine with wide-temperature adaptive backlight adjustment function includes a rear cover 4 with an upward-opening, box-shaped structure. A main mounting panel 1 is fixed at the top opening of the rear cover 4, and a fixing frame 2 is embedded in the middle of the upper surface of the main mounting panel 1. A display module 3 and a light guide plate 9 stacked together are fixed in the fixing frame 2. A support plate 10 for supporting the light guide plate 9 and the display module 3 is fixed at the bottom of the fixing frame 2. Light guide holes adapted to the thickness and position of the light guide plate 9 are reserved on both opposite sides of the fixing frame 2. The purpose of the holes is to guide the light to the end of the light guide plate 9, and then the light can be uniformly distributed within the light guide plate 9. The light-scattering component projects light evenly and vertically onto the display module 3 above it. On opposite sides of the fixing frame 2, near the corresponding light guide holes, are fixed V-shaped refractive plates 14 with opposing openings and symmetrical shapes. Both V-shaped refractive plates 14 are located on the lower surface of the support plate 10 and have dimming channels 16. The outer walls of the dimming channels 16 are slidably connected to extension channels 2 17 that can be synchronously stretched horizontally. Extension channels 2 17 include two parallel U-shaped slot plates, with the openings of the U-shaped slot plates facing the V-shaped refractive plate 14 on their respective sides. The ends of the two U-shaped slot plates on the same extension channel 2 17 furthest from the slot opening are fixed together. A single LED light strip 18 is used. A fixed carrier plate 15, parallel to the carrier plate 10, is fixed below the carrier plate 10. A liquid-containing soft bag 12, filled with antifreeze liquid, is fixed between the upper surface of the fixed carrier plate 15 and the carrier plate 10. A downward-facing recess 153 is reserved in the middle of the carrier plate 10, located in the middle of the liquid-containing soft bag 12, and an electric heater 11 is installed within the recess 153. Through the liquid-containing soft bag 12 located on the back of the carrier plate 10, along with the extension channels 17 on both sides that can simultaneously extend and retract towards the center and the LED light strip 18, when the surface of the display module 3 of the device is in an extremely cold environment... When the liquid is heated, the liquid in the liquid-containing soft bag 12 can be heated. Then, the two extension channels 17 are moved towards the center at the same time. The surface of the liquid-containing soft bag 12, after being squeezed, will be in close contact with the surface of the tray 10, which is conducive to rapid heat conduction and thus prevents the operating temperature of the display module 3 from being too low. At the same time, due to the positional movement of the LED light strip 18, the light needs to pass through the elongated dimming channel 16 before being reflected by the V-shaped refractor 14 into the light guide plate 9. Finally, the light intensity is attenuated. This dimming method makes the change in light intensity very smooth, without involving changes in current, and can also simplify the circuit and reduce energy consumption.

[0034] Reference Figures 7-8Both ends of the V-shaped refractor 14 are fixed with side baffles 23, and the dimming channel 16 includes two T-shaped strips with parallel main surfaces. The opposite sides of the two T-shaped strips are provided with black frosted surfaces. The two ends of the two U-shaped slot plates of the extension channel 2 17 are respectively fixed with T-shaped connecting plates 28 for fixing the two. The T-shaped connecting plates 28 at both ends of the same extension channel 2 17 are fixed with fixing blocks 1 on the side away from the LED light strip 18. The side of fixing blocks 1 that is close to the side baffle 23 on the same side is fixed with a reset spring. The other end of the reset spring is fixed to the corresponding side baffle 23. This ensures that when the extension channel 2 17 and the LED light strip 18 do not need to be pulled towards the middle, the extension channel 2 17 can be tightly attached to the port of the V-shaped refractor 14 on the same side to maintain the stability of the light source. When the two extension channels 2 17 are pulled towards the middle, the T-shaped strips with black frosted surfaces, i.e., the dimming channel 16, will be exposed. At this time, the light will be absorbed, thereby reducing the screen brightness.

[0035] Reference Figures 4-5 Two symmetrical shovel plates 19 are fixed to the opposite sides of the two extension channels 17 near the bottom edge of the LED light strip 18. The two shovel plates 19 are rounded at the sides near the liquid container bag 12. Symmetrical anti-reverse racks 151 are reserved in the middle of the left and right ends of the fixed carrier plate 15. The anti-reverse racks 151 are located below the corresponding dimming channels 16. The lower surface of the U-shaped slot plate near the bottom is hinged with anti-reverse pawls 20. The upper surface of the anti-reverse pawls 20 away from the hinge point is fixed with a clamping spring. The other end of the clamping spring is fixed to the lower surface of the U-shaped slot plate. Electromagnets 21 are fixed to the lower surface of the U-shaped slot plate near the bottom, close to the end of the anti-reverse pawl 20. The end of the anti-reverse pawl 20 is fixed with a suction block that attracts the electromagnet 21 when it is energized. With the anti-reverse pawl 20 and electromagnet 21, when the shovels 19 on both sides of the tray 10 move towards the middle at the same time and squeeze the liquid container soft bag 12 to the back of the tray 10, the anti-reverse pawl 20 will lock the position to prevent the expansion force of the liquid container soft bag 12 from pushing the LED light strip 18 and the shovels 19 back to their original positions after the traction force is removed. The two also work together to stabilize the light source.

[0036] Reference Figure 4 , Figure 6 , Figure 7The bottom inner wall of the rear cover 4 is fixed with a mounting plate 7, and the upper surface of the mounting plate 7 is fixed with parallel double-axis support frames 22 near the front and rear ends respectively. The top of the double-axis support frames 22 is respectively provided with coaxial and equal-height coil rods 25, and the coil rods 25 are located between two T-shaped connecting plates 28 at the same end of the two extension channels 17. The two ends of the coil rods 25 are respectively fixed with driven pulleys and rope winding wheels. The outer circumference of the rope winding wheels is fixed with two centrally symmetrical adjusting ropes 24. The two adjusting ropes 24 are respectively fixed on the T-shaped connecting plates 28 at the ends of the left and right extension channels 17. When the two coil rods 25 are rotated in the same direction, the two extension channels 17 can be pulled towards the middle simultaneously. 7. Then, the dimming channel 16 will be slowly exposed and the liquid-containing soft bag 12 in the middle will be squeezed. The bottom ends of the two double-axis support frames 22 are rotatably connected by the same transmission rod 8, and the two ends of the transmission rod 8 are respectively provided with driving pulleys that are connected to the driven pulleys. The same toothed conveyor belt 27 is wound between the driving pulleys and the corresponding driven pulleys. A servo motor 26 is fixed at one end of the transmission rod 8. When it is necessary to control the extension channels 17 on both sides of the tray 10 and the LED light strip 18 to squeeze towards the middle synchronously, it is only necessary to start the servo motor 26. When it is necessary to reset, the two electromagnets 21 are energized first and then the servo motor 26 is started in reverse.

[0037] Reference Figures 1-3 A start button 101 is provided at one corner of the main mounting panel 1, and a stepped recess 102 for mounting the fixing frame 2 is opened in the middle of the main mounting panel 1. An outwardly extending edge frame is reserved around the upper surface of the fixing frame 2. The display module 3, the fixing frame 2 and the upper surface of the main mounting panel 1 are flush. A stepped mounting groove is reserved at the edge of the rear cover 4, and a power socket 402, a heat dissipation hole 403 and a signal input port 404 are respectively provided in the stepped mounting groove. The motherboard, temperature sensor and controller are provided inside the rear cover 4. The ambient temperature can be accurately monitored through the set temperature sensor and controller in order to control the electromagnet 21 and the servo motor 26.

[0038] Reference Figure 9 and Figure 10 The upper surface of the support plate 10 has pre-reserved cuts near the light guide holes at both ends, and the left and right ends of the light guide plate 9 are provided with light collecting ends with increased thickness and shape matching the cuts near the light guide holes. The two ends of the support plate 10 away from the V-shaped refractor 14 are respectively fixed with L-shaped fixing plates 152, and the other end of the L-shaped fixing plates 152 is fixed to the lower surface of the support plate 10 by screws. Through the cuts and the light collecting ends at both ends of the light guide plate 9, the absorption capacity of reflected light can be improved.

[0039] Reference Figures 4-5One-way valves with opposite directions are inserted into the surface of the fixed carrier plate 15 and the bottom of the recess 153, respectively. The ends of the two one-way valves away from the liquid holding bag 12 are respectively connected to the discharge pipe 6 and the inlet pipe 5. The side of the rear cover 4 is provided with threaded pipes for fixing the openings of the discharge pipe 6 and the inlet pipe 5. The liquid flowing through the one-way valve at the end of the discharge pipe 6 is output in one direction. The top of the one-way valve is fixed with a top tube 13. The top of the top tube 13 is spherical to prevent the liquid holding bag 12 from being burst. The top of the top tube 13 is higher than the highest point of the liquid holding bag 12 under normal conditions, so that the internal air can be discharged to the maximum extent when replenishing liquid.

[0040] Reference Figure 2 and Figure 9 The liquid-containing soft bag 12 is made of transparent material, and an observation window 401 is opened on the side of the back cover 4 away from the V-shaped refractive plate 14. The height of the observation window 401 is adapted to the position of the liquid-containing soft bag 12. When the coolant needs to be replaced or replenished, the replenishment can be observed through the observation window 401 from the outside, which can facilitate maintenance without disassembly.

[0041] Reference Figures 8-10 The tray 10 has rectangular protrusions 1001 reserved at both ends away from the two light guide holes, and the inner walls of the fixing frame 2 on both sides away from the light guide holes have rectangular insertion holes 202 for snapping the rectangular protrusions 1001, which facilitates the snapping and installation of the tray 10.

[0042] Reference Figures 8-10 The two opposite sides of the fixed frame 2 are reserved with anti-derailment grooves 201 above the light guide hole, and the top of the V-shaped refractor 14 is reserved with anti-derailment protrusions that match the shape of the anti-derailment grooves 201. During installation, simply slide and push it in from the side, and ensure that the two ends are aligned.

[0043] Working Principle: When the display module 3 of this device is in an extremely cold environment, the temperature sensor will provide feedback. The controller will then first activate the electric heater 11 inside the liquid-containing soft bag 12, slowly heating the liquid inside. Next, the servo motor 26 will be activated, causing the two front and rear winding rods 25 to wind in the same direction, pulling the two extension channels 17 simultaneously towards the center until they are pressed tightly against both sides of the liquid-containing soft bag 12. The compressed upper surface of the liquid-containing soft bag 12 will bulge and press tightly against the surface. Heat conduction occurs rapidly on the surface of the tray 10, ensuring that the operating temperature of the display module 3 does not drop too low. Meanwhile, due to the positional shift of the LED light strip 18, the light needs to pass through the elongated dimming channel 16 before being reflected by the V-shaped refraction plate 14 into the light guide plate 9. At this time, the light of the display module 3 will also weaken. When it is necessary to brighten the display module 3, i.e., to move the two extension channels 17 and the LED light strip 18 in the reverse direction, it is only necessary to first energize the electromagnet 21, and after the anti-retardant pawl 20 disengages, the servo motor 26 can be started in the reverse direction.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An industrial touch screen all-in-one machine with wide temperature adaptive backlight adjustment function, comprising a rear cover (4) with an upward-opening, box-shaped structure, wherein a main mounting panel (1) is fixed at the top opening of the rear cover (4), and a fixing frame (2) is embedded in the middle of the upper surface of the main mounting panel (1), wherein a display module (3) and a light guide plate (9) stacked together are fixed in the fixing frame (2), characterized in that, The bottom of the fixed frame (2) is fixed with a support plate (10). The two opposite sides of the fixed frame (2) are reserved with light guide holes that are adapted to the thickness and position of the light guide plate (9). The two opposite sides of the fixed frame (2) are respectively fixed with V-shaped refraction plates (14) with opposite openings and symmetrical to each other near the corresponding light guide holes. The two V-shaped refraction plates (14) are provided with dimming channels (16) on the lower surface of the support plate (10). The outer wall of the dimming channel (16) is slidably connected with an extension channel two (17). The extension channel two (17) includes two U-shaped card slot plates that are parallel to each other. The opening of the U-shaped card slot plate faces the V-shaped card slot plate on the side where it is located. The U-shaped refraction plate (14) and the two U-shaped slot plates on the same extension channel (17) are fixed with the same LED light strip (18) at the ends away from the slot opening. The support plate (10) is fixed with a fixed carrier plate (15) parallel to the support plate (10) below it. A liquid holding soft bag (12) is fixed between the upper surface of the fixed carrier plate (15) and the support plate (10). The liquid holding soft bag (12) is filled with antifreeze liquid. The middle of the support plate (10) is reserved with a downward recessed part (153) in the middle of the liquid holding soft bag (12). An electric heater (11) is provided in the recessed part (153).

2. An industrial touch screen all-in-one machine with wide-temperature adaptive backlight adjustment function according to claim 1, characterized in that, Both ends of the V-shaped refractive plate (14) are fixed with side baffles (23), and the dimming channel (16) includes two T-shaped strips with parallel main surfaces. The opposite side of the two T-shaped strips is provided with a black frosted surface. The two ends of the two U-shaped slot plates of the extension channel two (17) are respectively fixed with T-shaped connecting plates (28) for fixing the two. The side of the T-shaped connecting plates (28) at both ends of the same extension channel two (17) away from the LED light strip (18) is fixed with a fixing block one. The side of the fixing block one close to the side baffle (23) is fixed with a reset spring. The other end of the reset spring is fixed on the corresponding side baffle (23).

3. An industrial touch screen all-in-one machine with wide-temperature adaptive backlight adjustment function according to claim 2, characterized in that, Two symmetrical shovels (19) are fixed on opposite sides of the two extended channels (17) near the bottom edge of the LED light strip (18), and the two shovels (19) are rounded on the side near the liquid container soft bag (12). The middle of the left and right ends of the fixed carrier plate (15) is reserved with symmetrical anti-reverse racks (151). The anti-reverse racks (151) are located below the corresponding dimming channel (16). The lower surface of the U-shaped card slot plate near the bottom is hinged with anti-reverse pawls (20), and the upper surface of the anti-reverse pawl (20) is fixed with a clamping spring at the end away from the hinge point. The other end of the clamping spring is fixed to the lower surface of the U-shaped card slot plate. The lower surface of the U-shaped card slot plate near the bottom is fixed with an electromagnet (21) near the end of the anti-reverse pawl (20), and the end of the anti-reverse pawl (20) is fixed with a suction block that attracts the electromagnet (21) when it is energized.

4. An industrial touch screen all-in-one machine with wide-temperature adaptive backlight adjustment function according to claim 3, characterized in that, The bottom inner wall of the rear cover (4) is fixed with a mounting plate base (7), and the upper surface of the mounting plate base (7) is fixed with parallel double-axis rod support frames (22) near the front and rear ends respectively. The top of the double-axis rod support frames (22) is respectively provided with coaxial and equal-height coil rods (25), and the coil rods (25) are located between two T-shaped connecting plates (28) at the same end of the two extension channels (17). The two ends of the coil rods (25) are respectively fixed with driven pulleys and rope winding wheels. The outer circumference of the rope winding wheels is fixed with two centrally symmetrical... The two adjusting pull ropes (24) are respectively fixed on the T-shaped connecting plates (28) at the ends of the two extension channels (17) on the left and right. The bottom ends of the two double-axis support frames (22) are rotatably connected by the same transmission rod (8). The two ends of the transmission rod (8) are respectively provided with active pulleys that form a transmission connection with the driven pulley. The active pulley and the corresponding driven pulley are both wound with the same toothed conveyor belt (27). One end of the transmission rod (8) is fixed with a servo motor (26).

5. An industrial touch screen all-in-one machine with wide-temperature adaptive backlight adjustment function according to claim 4, characterized in that, A start button (101) is provided at one corner of the main mounting panel (1), and a stepped recess (102) for mounting the fixing frame (2) is opened in the middle of the main mounting panel (1). An outwardly extending edge frame is reserved around the upper surface of the fixing frame (2). The upper surfaces of the display module (3), the fixing frame (2) and the main mounting panel (1) are flush. A stepped mounting groove is reserved at the edge of the rear cover (4), and a power socket (402), a heat dissipation hole (403) and a signal input port (404) are respectively provided at the stepped mounting groove. A motherboard, a temperature sensor and a controller are provided inside the rear cover (4).

6. An industrial touch screen all-in-one machine with wide-temperature adaptive backlight adjustment function according to claim 1, characterized in that, The upper surface of the tray (10) has pre-reserved cuts near the light guide holes at both ends, and the left and right ends of the light guide plate (9) are provided with light collecting ends with increased thickness and shape matching the cuts near the light guide holes. The two ends of the tray (10) away from the V-shaped refractive plate (14) are respectively fixed with L-shaped fixing plates (152), and the other end of the L-shaped fixing plates (152) is fixed to the lower surface of the tray (10) by screws.

7. An industrial touch screen all-in-one machine with wide-temperature adaptive backlight adjustment function according to claim 1, characterized in that, One-way valves with opposite directions are inserted into the surface of the fixed carrier plate (15) and the bottom of the recess (153), and the two one-way valves are respectively connected to the discharge pipe (6) and the inlet pipe (5) at the ends away from the liquid holding soft bag (12). The side of the rear cover (4) is respectively provided with threaded pipes for fixing the openings of the discharge pipe (6) and the inlet pipe (5). The liquid flowing through the one-way valve at the end of the discharge pipe (6) is output in one direction, and the top of the one-way valve is fixed with a top tube (13). The top of the top tube (13) is spherical, and the top of the top tube (13) is higher than the highest point of the liquid holding soft bag (12) under normal conditions.

8. An industrial touch screen all-in-one machine with wide-temperature adaptive backlight adjustment function according to claim 7, characterized in that, The liquid-containing soft bag (12) is made of transparent material, and an observation window (401) is opened on the side of the back cover (4) away from the V-shaped refractive plate (14). The height of the observation window (401) is adapted to the position of the liquid-containing soft bag (12).

9. An industrial touch screen all-in-one machine with wide-temperature adaptive backlight adjustment function according to claim 1, characterized in that, The tray (10) has rectangular protrusions (1001) reserved at both ends away from the two light guide holes, and the inner walls of the fixing frame (2) away from the light guide holes on both sides have rectangular insertion holes (202) for snapping the rectangular protrusions (1001).

10. An industrial touch screen all-in-one machine with wide temperature adaptive backlight adjustment function according to claim 1, characterized in that, The fixed card frame (2) has anti-derailment grooves (201) reserved on both sides opposite to each other above the light guide hole, and the top of the V-shaped refractive plate (14) has anti-derailment protrusions that match the shape of the anti-derailment grooves (201).

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