A hidden lifting screen

Abstract

The present invention relates to a hidden lifting screen, comprising a hidden box and a fixed object, wherein the hidden box is an open structure, the hidden box is embedded in the fixed object, a guide rail is provided on the side wall of the hidden box, a linear motor is provided on the guide rail, the linear motor is connected to a display screen, and the linear motor can be controlled to move on the guide rail to drive the display screen to rise and fall, so that the display screen is retracted into the hidden box or extended out of the hidden box. The present invention facilitates the display screen to be folded and hidden when not in use, avoids the display screen from being easily bumped when not in use, is conducive to protecting the display screen, and also reduces the external space occupied by the display screen when not in use.

Description

Technical Field

[0001] The invention belongs to the technical field of display screens, and in particular relates to a hidden lifting screen. Background Art

[0002] Display screens include active imaging screens and passive imaging screens. Active imaging screens include hard liquid crystal screens and soft film screens. Hard liquid crystal screens are common LCD screens such as televisions, computers, and tablets. This type of display screen is suitable for small-area playback and display. Soft film screens, such as the "one-piece soft film screen that is easy to mass produce" disclosed in CN202220284921.5, are easy to unfold and retract, and can also play imaging in any bent state, which is suitable for large-area playback and display. Passive imaging screens include common soft projection cloths, which are also easy to unfold and retract, and are suitable for large-area projection and display. However, in the prior art, display screens are generally fixedly installed on fixed objects such as desktops, walls, and roofs, and are inconvenient to fold and hide when not in use, resulting in the display screen being easily bumped when not in use, which is not conducive to protecting the display screen, and the display screen occupies a relatively large external space when not in use. Summary of the invention

[0003] The present invention provides a hidden lifting screen to solve the problems in the above-mentioned background technology.

[0004] The technical solution adopted by the present invention is:

[0005] A hidden lifting screen comprises a hidden box and a fixed object, wherein the hidden box is an open structure and is embedded in the fixed object. A guide rail is provided on the side wall of the hidden box, and a linear motor is provided on the guide rail. The linear motor is connected to a display screen, and the display screen can be lifted and lowered by controlling the linear motor to move on the guide rail, so that the display screen can be retracted into the hidden box or extended out of the hidden box.

[0006] Furthermore, guide rails are provided on both sides of the hidden box, the display screen is a hard liquid crystal screen, and linear motors are connected to both sides of the liquid crystal screen.

[0007] Furthermore, the display screen includes a bracket, an airbag and a soft screen, the bracket is connected to a linear motor, an air pump is provided on the bracket, the airbag presents a flat hollow structure when deployed, a soft screen matching with the airbag is connected to the outer surface of the airbag, a plurality of spiral springs are connected at intervals on one side of the airbag close to the soft screen, one end of the plurality of spiral springs is commonly connected to an adapter frame, the adapter frame passes through the outside of the airbag and is sealed with the airbag, the adapter frame is connected to the bracket, the air pump is connected to the airbag through an air pipe, and a flow solenoid valve is provided on the end of the airbag away from the air pipe.

[0008] Furthermore, an air pressure sensor is provided in the airbag, a controller is provided on the bracket, and the controller is electrically connected to the air pump and the air pressure sensor.

[0009] Furthermore, a strain gauge is provided on the volute spring, a controller is provided on the bracket, and the controller is electrically connected to the air pump and the strain gauge.

[0010] Furthermore, a temperature sensor is provided in the airbag, and the controller is electrically connected to the temperature sensor.

[0011] Furthermore, an air intake solenoid valve is provided on the air pipe, and the air intake solenoid valve is electrically connected to the controller.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. When it is needed, the linear motor drives the display screen to extend out of the hidden box. After use, the linear motor drives the display screen to retract into the hidden box, which is convenient for folding and hiding the display screen when not in use, avoiding the display screen from being easily bumped when not in use, which is beneficial to protecting the display screen and reducing the external space occupied by the display screen when not in use.

[0014] 2. When the present invention is used, the soft screen can be quickly rolled up and then retracted into the hidden box by using the combination of the scroll spring and the linear motor. A relatively large soft screen can be stored in a relatively small hidden space, thus saving the hidden space.

[0015] 3. Use the temperature sensor to detect the temperature inside the airbag. When the temperature is too high, the controller controls the flow solenoid valve to open to an appropriate degree. The controller also controls the air pump to inflate the airbag so that the soft screen 7 can be in a nearly straight state to avoid affecting the display or projection effect. At the same time, the air pump can be used to inject external low-temperature air into the airbag, and then the high-temperature air in the airbag is discharged out of the airbag, which can cool the airbag and then cool the soft screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure of the first embodiment is shown in FIG. Figure 1 ;

[0017] Figure 2 The overall structure of the first embodiment is shown in FIG. Figure 2 ;

[0018] Figure 3 The overall structure of the second embodiment, the third embodiment, the fourth embodiment and the fifth embodiment is shown in FIG. Figure 1 ;

[0019] Figure 4 The overall structure of the second embodiment, the third embodiment, the fourth embodiment and the fifth embodiment is shown in FIG. Figure 2;

[0020] Figure 5 It is a front structural schematic diagram of the soft screen in the unfolded state in the second embodiment, the third embodiment, the fourth embodiment and the fifth embodiment;

[0021] In the figure: 1. LCD screen; 2. Screen frame; 3. Guide rail; 4. Linear motor; 5. Hidden box; 6. Fixing object; 7. Soft screen; 8. Air bag; 9. Volute spring; 10. Flow solenoid valve; 11. Strain gauge; 12. Air pipe; 13. Controller; 14. Air pump; 15. Bracket; 16. Air pressure sensor; 17. Adapter rack; 18. Intake solenoid valve; 19. Temperature sensor. DETAILED DESCRIPTION

[0022] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0023] Embodiment 1

[0024] See also Figures 1 to 2 The present invention provides a hidden lifting screen, including a hidden box 5 and a fixed object 6. The hidden box 5 is an open structure. The hidden box 5 is fixedly embedded in the fixed object 6. A guide rail 3 is fixedly provided on the side wall inside the hidden box 5. A linear motor 4 is provided on the guide rail 3. The linear motor 4 can slide vertically on the guide rail 3. The linear motor 4 is connected to a display screen. By controlling the linear motor 4 to move on the guide rail 3, the display screen can be driven to rise and fall, so that the display screen can be retracted into the hidden box 5 when not in use or extended out of the hidden box 5 when in use.

[0025] When the present invention is in use, the linear motor 4 drives the display screen to rise and extend out of the hidden box 5 (such as Figure 1 After use, the display screen is driven down and retracted into the hidden box 5 by the linear motor 4; or when in use, the display screen is driven down and extended out of the hidden box 5 by the linear motor 4 (as shown in FIG. Figure 2 As shown), after use, the display screen is driven up and retracted into the hidden box 5 by the linear motor 4, which is convenient for folding and hiding the display screen when not in use, avoiding the display screen from being easily bumped when not in use, which is beneficial to protecting the display screen and reducing the external space occupied by the display screen when not in use.

[0026] Specifically, guide rails 3 are fixed on both sides of the hidden box 5, the display screen is a hard LCD screen 1, and a screen frame 2 is provided on the LCD screen 1. The screen frame 2 is used to increase the overall strength of the LCD screen 1. Linear motors 4 are connected to both sides of the LCD screen 1. The LCD screen 1 is driven to rise and fall from both sides by two linear motors 4, so that the force on the LCD screen 1 is uniform during the lifting process.

[0027] Embodiment 2

[0028] See also Figures 3 to 5 The difference between this embodiment and the first embodiment is that:

[0029] Specifically, the display screen includes a bracket 15, an airbag 8 and a soft screen 7. The bracket 15 is an L-shaped structure. The airbag 8 is a flat and hollow structure after being unfolded. The soft screen 7 is a soft film screen or projection cloth in the prior art. The upper end of the bracket 15 is fixedly connected to the linear motor 4. An air pump 14 is provided on the side wall of the bracket 15. The outer side of the airbag 8 is connected to the soft screen 7 matching with it. The outer side of the airbag 8 is evenly connected to the rear side of the soft screen 7. A plurality of volute springs 9 are connected at intervals on one side of the airbag 8 close to the soft screen 7. One end of the plurality of volute springs 9 is fixedly connected to an adapter frame 17. The adapter frame 17 passes through the end wall of the airbag 8 and is sealed therewith. The outer end of the adapter frame 17 is fixedly connected to the end of the bracket 15. The air pump 14 is connected to the lower end of the airbag 8 through the air pipe 12. A flow solenoid valve 10 is provided on the end of the airbag 8 away from the air pipe 12. The flow solenoid valve 10 can control the exhaust switch and exhaust speed in the airbag 8.

[0030] The hidden box 5 of the present invention can also be installed with the opening facing upward or downward to achieve rising or falling deployment, so as to improve its applicability;

[0031] The lifting, unfolding and retracting steps of the present invention include:

[0032] S1. When it is needed, the linear motor 4 is controlled by the controller 13 to drive the bracket 15 to rise or fall, and the bracket 15 drives the airbag 8 and the soft screen 7 to extend out of the hidden box 5 through the adapter 17;

[0033] S2, the controller 13 controls the air pump 14 to deliver air to the airbag 8 through the air pipe 12. As the air in the airbag 8 increases, the airbag 8 swells and unfolds into a flat plate. In this process, the airbag 8 drives the soft screen 7 and the scroll spring 9 to unfold into a flat plate state;

[0034] S3. After use, the controller 13 controls the flow electromagnetic valve 10 to open, and utilizes the resilience of the volute spring 9 to drive the airbag 8 to retract, and the airbag 8 drives the soft screen 7 to retract, so that the air in the airbag 8 is discharged and the soft screen 7 and the airbag 8 are completely retracted;

[0035] S4, the controller 13 controls the linear motor 4 to drive the airbag 8 and the soft screen 7 to retract into the hidden box 5 through the bracket 15;

[0036] When the present invention is used, the soft screen 7 can be quickly rolled up and then retracted into the hidden box 5, and a smaller hidden space can be used to store a larger soft screen 7, thereby saving the hidden space.

[0037] Specifically, the air pipe 12 is provided with an air intake solenoid valve 18 , and the air intake solenoid valve 18 is electrically connected to the controller 13 .

[0038] When inflating the airbag 8, the controller 13 controls the air intake solenoid valve 18 to open. After the inflation is completed, the controller 13 controls the flow solenoid valve 10 to close, which can prevent the air in the airbag 8 from leaking out of the air pipe 12. When retracting is required, the controller 13 controls the air intake solenoid valve 18 and the flow solenoid valve 10 to open to accelerate the exhaust of the airbag 8.

[0039] Embodiment 3

[0040] See also Figures 3 to 5 The difference between this embodiment and the second embodiment is that:

[0041] Specifically, an air pressure sensor 16 is provided in the airbag 8, and a controller 13 is provided on the bracket 15. The controller 13 is electrically connected to the air pump 14 and the air pressure sensor 16. In the process of inflating the airbag 8, the air pressure in the airbag 8 is detected by the air pressure sensor 16. When the air pressure in the airbag 8 reaches a preset air pressure value, it can be determined that the airbag 8 and the soft screen 7 are in a state of being nearly fully deployed and stretched straight. The controller 13 controls the air pump 14 to stop working, and controls the air inlet solenoid valve 18 to close, so as to facilitate automatic control of the deployment and contraction of the soft screen 7.

[0042] Embodiment 4

[0043] See also Figures 3 to 5 The difference between this embodiment and the second embodiment is that:

[0044] Specifically, a strain gauge 11 is provided on the inner side of the volute spring 9, and a controller 13 is provided on the bracket 15. The controller 13 is electrically connected to the air pump 14 and the strain gauge 11. The strain gauge 11 is installed on the inner side of the volute spring 9 when the volute spring 9 is fully retracted, so that the strain force detected by the strain gauge 11 when the volute spring 9 is fully retracted is zero. In the process of inflating the airbag 8, as the airbag 8 drives the soft screen 7 and the volute spring 9 to unfold and straighten, the volute spring 9 drives the strain gauge 11 to unfold and deform, so that the stress value of the strain gauge 11 increases. When the stress value reaches the preset stress value, it can be judged that the airbag 8 and the soft screen 7 are in a state close to being fully unfolded and straightened. The controller 13 controls the air pump 14 to stop working, and at the same time controls the air intake solenoid valve 18 to close, so as to facilitate the automatic control of the unfolding and retraction of the soft screen 7.

[0045] Embodiment 5

[0046] See also Figures 3 to 5 The difference between this embodiment and the third or fourth embodiment is that:

[0047] Specifically, a temperature sensor 19 is provided in the airbag 8, and the controller 13 is electrically connected to the temperature sensor 19. When the soft screen 7 is heated, the heat will be transferred to the airbag 8. The temperature sensor 19 is used to detect the temperature in the airbag 8. When the temperature is too high, the controller 13 controls the flow electromagnetic valve 10 to open a suitable opening, and the controller 13 controls the air pump 14 to inflate the airbag 8. At the same time, the controller 13 receives the air pressure value transmitted by the air pressure sensor 16 in real time, so that the air pressure value in the airbag 8 is within a range of 3% greater than or less than the preset air pressure value; or the controller 13 receives the stress value transmitted by the strain gauge 11 in real time, so that the stress value is within a range of 3% greater than or less than the preset stress value. The soft screen 7 can be in a state close to being stretched to avoid affecting the display or projection effect. At the same time, the air pump 14 can be used to inject low-temperature air from the outside into the airbag 8, and then the high-temperature air in the airbag 8 is discharged out of the airbag 8, so that the airbag 8 can be cooled and the soft screen 7 can be cooled.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A hidden lifting screen, characterized in that: It comprises a hidden box and a fixed object, wherein the hidden box is an open structure, the hidden box is embedded in the fixed object, a guide rail is arranged on the side wall of the hidden box, a linear motor is arranged on the guide rail, the linear motor is connected to a display screen, and the display screen can be driven to rise and fall by controlling the linear motor to move on the guide rail, so that the display screen is retracted into the hidden box or extended out of the hidden box; the display screen comprises a bracket, an airbag and a soft screen, the bracket is connected to the linear motor, an air pump is arranged on the bracket, the airbag presents a flat hollow structure after being deployed, a soft screen matching with the airbag is connected to the outer surface of the airbag, a side of the airbag close to the soft screen is connected with a plurality of volute springs at intervals, one end of the plurality of volute springs is commonly connected to an adapter frame, the adapter frame passes through the outside of the airbag and is sealed with it, the adapter frame is connected to the bracket, the air pump is connected to the airbag through an air pipe, and a flow solenoid valve is arranged on the end of the airbag away from the air pipe; A pressure sensor is provided in the airbag, a controller is provided on the bracket, the controller is electrically connected to the air pump and the pressure sensor, a temperature sensor is provided in the airbag, the controller is electrically connected to the temperature sensor, the temperature sensor is used to detect the temperature in the airbag, when the temperature is too high, the controller controls the flow solenoid valve to open to a suitable opening, the controller controls the air pump to inflate the airbag at the same time, and the controller receives the pressure value transmitted by the pressure sensor in real time, so that the pressure value in the airbag is within a range of 3% greater than or less than a preset pressure value; Or a strain gauge is provided on the scroll spring, a controller is provided on the bracket, the controller is electrically connected to the air pump and the strain gauge, a temperature sensor is provided in the airbag, the controller is electrically connected to the temperature sensor, the temperature in the airbag is detected by the temperature sensor, when the temperature is too high, the controller controls the flow solenoid valve to open to an appropriate degree, the controller simultaneously controls the air pump to inflate the airbag, the controller receives the stress value transmitted by the strain gauge in real time, so that the stress value is within a range greater than or less than 3% of the preset stress value.

2. A hidden lifting screen according to claim 1, characterized in that: The air pipe is provided with an air intake solenoid valve, and the air intake solenoid valve is electrically connected to the controller.

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