LED dot matrix display screen and refrigeration household appliance

Abstract

The invention relates to the technical field of home appliance assembly, in particular to an LED dot matrix display screen and a refrigeration home appliance, the LED dot matrix display screen comprises a large frame and a small frame fixedly connected in the large frame, a display screen body is arranged in the small frame, the LED dot matrix display screen further comprises a movable frame, a first connecting rod is fixedly connected in the movable frame, and a second connecting rod is fixedly connected in the movable frame. The first connecting rod is rotationally connected with the inner wall of the small frame, the display screen body is slidably connected to the top end of the movable frame, a wireless storage battery is installed on the outer side of the movable frame and used for providing power for the display screen body, and a first arc spring is fixedly connected between the inner wall of the movable frame and the inner wall of the small frame. Through the structural design of the clamping mechanism and the clamping groove, the display screen body is rapidly fixed and disassembled, locking can be unlocked by moving the clamping mechanism, the movable frame automatically inclines and rotates under the action of the first arc-shaped spring, the display screen body is easy to take out, tools are not needed, operation is easy and convenient, and the disassembly, assembly and maintenance efficiency is remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of home appliance assembly technology, and more particularly to LED dot matrix displays and refrigeration appliances. Background Technology

[0002] LED dot matrix displays are display units composed of a large number of LED beads arranged in a matrix. Due to their high brightness and long lifespan, they are widely used in refrigeration appliances such as refrigerators and air conditioners to clearly display status information such as temperature and mode.

[0003] The core components of an LED dot matrix display screen include a control system, display modules, a power supply, and a mechanical frame. The control system is responsible for receiving and processing external commands and generating control signals. The display module, or LED dot matrix module itself, is the final carrier of information and is composed of numerous LED beads packaged in a row and column matrix. The power supply provides a stable and reliable power supply for the entire display screen. Finally, the mechanical frame, as a key support structure, is usually made of precision-machined metal profiles and provides a stable mounting base for internal components.

[0004] Currently, most LED dot matrix displays adopt an embedded installation structure, which makes disassembly after connection to the frame inconvenient. At the same time, the traditional bolt fastening method requires the use of specific tools, and the operation process is cumbersome, increasing the difficulty of daily maintenance and upgrades. Therefore, this application proposes an LED dot matrix display and a refrigeration appliance. Summary of the Invention

[0005] The purpose of this invention is to address the problem of inconvenient disassembly and assembly of LED dot matrix displays in the background art, and to propose an LED dot matrix display and a cooling appliance.

[0006] In a first aspect, this application provides an LED dot matrix display screen, including a large frame and a small frame fixed inside the large frame, wherein the display screen body is disposed inside the small frame, and further includes: The movable frame has a connecting rod fixedly connected inside, which is rotatably connected to the inner wall of the small frame. The display screen body is slidably connected to the top of the movable frame. A wireless battery is installed on the outside of the movable frame to provide power to the display screen body. An arc-shaped spring is fixedly connected between the inner walls of the movable frame and the small frame. A card plate is fixed to the side of the movable frame away from the display screen body. The top of the card plate has a circular slot, and the top of the small frame has a circular sliding groove. The inside of the circular sliding groove is provided with a locking mechanism that cooperates with the circular slot. The locking mechanism is used to limit the position of the movable frame. At least two sets of connecting slots are provided on the side of the movable frame away from the display screen body. The two sets of connecting slots are slidably connected to lifting plates. The lifting plates are provided with friction mechanisms, which are used to move the position of the display screen body.

[0007] Optionally, the engaging mechanism includes a pull plate, a disc, a circular locking rod, and a compression spring. The disc is fixed to the bottom end of the pull plate and slidably connected to the inside of a circular groove. The circular locking rod is fixed to the bottom end of the disc and passes through a small frame. The bottom end of the circular locking rod slides inside the circular groove. The compression spring is fixed to the bottom end of the disc, and the end of the compression spring away from the disc is fixed to the bottom end of the inner wall of the circular groove.

[0008] Optionally, the friction mechanism includes a trigger bar, multiple sets of fixed rods, and a friction bar. The trigger bar is disposed around the periphery of the lifting plate, and the multiple sets of fixed rods are all fixedly connected to the end of the trigger bar near the lifting plate. The friction bar is slidably connected inside the lifting plate, and the ends of the multiple sets of fixed rods away from the trigger bar are fixedly connected to the friction bar.

[0009] Optionally, the interior of the large frame is provided with a fall protection plate, and a connecting rod two is fixedly connected inside the fall protection plate. Both ends of the connecting rod two are rotatably connected to the inner wall of the large frame. An arc-shaped spring two is fixedly connected between the fall protection plate and the inner wall of the large frame. An unlocking mechanism is provided on the periphery of the movable frame. The unlocking mechanism is used to release the limit on the fall protection plate, allowing the fall protection plate to swing and unfold.

[0010] Optionally, the unlocking mechanism includes a nylon rope, a horizontal plate, two sets of guide rods, a baffle, and a guide wheel. The nylon rope is fixedly connected to the movable frame, and the horizontal plate is fixedly connected to the end of the nylon rope away from the movable frame. Both sets of guide rods are fixedly connected to the inner wall of the large frame, and the guide rods slide through the horizontal plate. The end of the baffle near the anti-fall plate is fixedly connected to the horizontal plate, and the baffle and the end of the anti-fall plate away from the second arc spring are in contact. The guide wheel is fixedly connected to the inner wall of the small frame, and the guide wheel is in contact with the outer side of the nylon rope.

[0011] Optionally, the interior of the small frame is provided with a first set of limiting ropes and two sets of second sets of limiting ropes. The first set of limiting ropes is fixed between the inner wall of the small frame and the movable frame, and the two sets of second sets of limiting ropes are fixed between the inner wall of the large frame and the anti-fall plate.

[0012] Optionally, the length of the second limiting rope is greater than the length of the first limiting rope.

[0013] Optionally, a limiting plate is fixed to the top of the inner wall of the small frame, and the limiting plate is in contact with the end of the movable frame near the limiting rope.

[0014] Optionally, the friction strip is made of silicone rubber and is adapted to the internal size of the lifting plate.

[0015] Secondly, this application provides a refrigeration appliance, including a cabinet, a first side door, a second side door, and a fixing groove, as well as an LED dot matrix display screen as described in the first aspect disposed in the fixing groove; Both side door one and side door two are rotatably connected to the outside of the main frame. The fixing groove is opened on the outside of side door one, and the main frame is fixed to the inner wall of the fixing groove.

[0016] Compared with the prior art, this application includes at least one of the following beneficial technical effects: This invention achieves rapid fixing and disassembly of the display screen body through the structural design of the locking mechanism and the slot. The locking mechanism can be moved to release the lock, and the movable frame automatically tilts and rotates under the action of the arc spring, making the display screen body easy to remove. No tools are required, the operation is simple, and the efficiency of disassembly, assembly and maintenance is significantly improved.

[0017] Furthermore, by linking the anti-drop plate with the unlocking mechanism, the unlocking mechanism is automatically triggered when the display screen body is disassembled, causing the anti-drop plate to quickly unfold and form a protective slope. If the display screen body accidentally slips, it can slowly descend along the slope into the large frame, effectively avoiding direct fall damage and greatly improving operational safety. After the protection is completed, the anti-drop plate can be easily reset, keeping the equipment's appearance clean and beautiful. Attached Figure Description

[0018] Figure 1 Here are structural diagrams of side door one and side door two; Figure 2 A structural diagram of the main frame and the display screen itself; Figure 3 This is a schematic diagram of the explosion at side door one; Figure 4 This is a schematic diagram of the longitudinal cross-section of the large frame and the small frame; Figure 5 This is a schematic diagram of an explosion of the display screen itself. Figure 6 This is a longitudinal cross-sectional view of the active frame and the display screen body; Figure 7 for Figure 6 A magnified structural diagram at point A; Figure 8 This is a schematic diagram of the trigger bar and friction bar. Figure 9 This is a longitudinal cross-sectional view of the anti-fall board; Figure 10 This is a schematic diagram of the horizontal cross-section of the main frame.

[0019] Attached reference numerals: 1. Main frame; 2. Small frame; 3. Movable frame; 4. Connecting rod one; 5. Display screen body; 6. Wireless battery; 7. Arc spring one; 8. Card plate; 9. Circular slot; 10. Circular slide; 11. Connecting groove; 12. Lifting plate; 13. Pull plate; 14. Disc; 15. Circular locking rod; 16. Compression spring; 17. Trigger bar; 18. Fixing rod; 19. Friction bar; 20. Anti-fall plate; 21. Connecting rod two; 22. Arc spring two; 23. Nylon rope; 24. Horizontal plate; 25. Guide rod; 26. Baffle; 27. Guide wheel; 28. Limiting rope one; 29. ​​Limiting rope two; 30. Limiting plate; 31. Box body; 32. Side door one; 33. Side door two; 34. Fixing groove. Detailed Implementation

[0020] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0021] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0022] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 3 - Figure 6As shown, the LED dot matrix display screen proposed in this invention includes a large frame 1 and a small frame 2 fixed inside the large frame 1. The large frame 1 supports the small frame 2. A display screen body 5 (the display screen body 5 is existing technology and mature, serving a display function, and will not be elaborated further) is disposed inside the small frame 2. The LED dot matrix display screen also includes a movable frame 3. A connecting rod 4 is fixed inside the movable frame 3. The connecting rod 4 is rotatably connected to the inner wall of the small frame 2. The movable frame 3 can rotate along the inner wall of the small frame 2 via the connecting rod 4. The display screen body 5 is slidably connected to the movable frame. At the top of frame 3, the display body 5 is located inside the movable frame 3 and can slide along the inside of the movable frame 3. A wireless battery 6 is installed on the outside of the movable frame 3. The wireless battery 6 provides power to the display body 5. When the display body 5 is completely inside the movable frame 3, the wireless battery 6 can provide power to the display body 5. Both use a wireless charging mode. It should be noted that the wireless battery 6 is existing technology, and wireless charging technology is mature, so it will not be elaborated further. An arc-shaped spring 7 is fixed between the inner wall of the movable frame 3 and the small frame 2. When the movable frame 3 is placed vertically (e.g., Figure 6 As shown in the diagram, the curved spring 7 is in a compressed state and generates elastic potential energy.

[0024] As one implementation method, such as Figure 5 , Figure 6 and Figure 7 As shown, the LED dot matrix display screen also includes a locking plate 8 fixed to the side of the movable frame 3 away from the display body 5. The top of the locking plate 8 has a circular slot 9, and the top of the small frame 2 has a circular sliding groove 10. The circular sliding groove 10 has a locking mechanism that engages with the circular slot 9. Initially, the locking mechanism is located inside the circular slot 9. This locking mechanism restricts the position of the movable frame 3. Since the locking plate 8 is fixed to the movable frame 3, the locking mechanism also blocks the swing direction of the locking plate 8, preventing the movable frame 3 from swinging. Meanwhile, the top of the display body 5 is blocked by the small frame 2, thus achieving control over the position of the movable frame 3. The display screen body 5 has a quick-locking function. When it is necessary to replace or repair the display screen body 5, simply move the locking mechanism to disengage it from the circular slot 9. At this time, the locking mechanism stops blocking the locking plate 8, and the arc spring 7 can release its elastic potential energy, pushing the movable frame 3 to swing. The swing of the movable frame 3 then causes the display screen body 5 to swing synchronously. At this time, the top opening of the movable frame 3, that is, the top of the display screen body 5, is tilted. The top of the display screen body 5 is blocked by the small frame 2, and the operation ends. The operator can then remove the display screen body 5 along the inside of the movable frame 3 (the direction of removal of the display screen body 5 is as follows). Figure 5(In the direction indicated by the arrow), quickly separate the display body 5 from the movable frame 3, thereby achieving the function of quick disassembly of the display body 5; Furthermore, such as Figure 6 and Figure 8 As shown, the LED dot matrix display screen also includes at least two sets of connecting slots 11 on the side of the movable frame 3 away from the display body 5. The connecting slots 11 are T-shaped. Lifting plates 12 are slidably connected inside the two sets of connecting slots 11. The lifting plates 12 can move up and down along the inside of the connecting slots 11. A friction mechanism is provided inside the lifting plates 12. The friction mechanism is used to move the position of the display body 5. When the movable frame 3 is tilted and the display body 5 needs to be removed, the operator's hand must first be placed against the surface of the display body 5, and then the display body 5 is moved by friction. However, if the operator operates improperly at this time, the display body 5 may be scratched by the fingernail. In this embodiment... The friction mechanism can be brought close to the display screen body 5, so that the friction mechanism slightly presses the display screen body 5. Then, the lifting plate 12 is moved upward. The upward movement of the lifting plate 12 will drive the friction mechanism to move upward at the same time. The friction mechanism will then drive the display screen body 5 to move upward by friction, so that the top of the display screen body 5 protrudes. That is, when the top of the display screen body 5 is higher than the top of the movable frame 3, the operator can then hold the two sides of the display screen body 5 to realize the function of picking up the display screen body 5. Through the above structural design, the operator's hands do not need to directly contact the display screen body 5 during the process of moving and protruding the display screen body 5, avoiding the situation where the operator scratches the display screen body 5 with their fingernails due to improper operation.

[0025] Furthermore, such as Figure 6 and Figure 7 As shown, the engaging mechanism includes a pull plate 13, a disc 14, a circular locking rod 15, and a compression spring 16. The engaging mechanism is described in detail below: The disc 14 is fixed to the bottom end of the pull plate 13 and slidably connected to the inside of the circular groove 10. The circular locking rod 15 is fixed to the bottom end of the disc 14 and passes through the small frame 2. The bottom end of the circular locking rod 15 slides inside the circular slot 9. In the initial state, the circular locking rod 15 is inside the circular slot 9, which blocks the swing direction of the locking plate 8. When it is necessary to swing the locking plate 8, that is, to remove the display screen body 5, simply pull the pull plate 13 upward. The upward movement of the pull plate 13 will drive the disc 14 upward, and the upward movement of the disc 14 will drive the circular locking rod 15 upward. The upward movement of the circular locking rod 15 will disengage from the inside of the circular slot 9. At this time, the circular locking rod 15 stops blocking the swing direction of the locking plate 8, and the arc spring 7 will release elastic potential energy, pushing the movable frame 3 to swing. The swing of the movable frame 3 will drive the display screen body 5 to swing. As the display screen body 5 swings, the top of the display screen body 5 will disengage. Once the small frame 2 is removed from the interior, the display screen body 5 can be taken out along the interior of the movable frame 3. The compression spring 16 is fixed to the bottom end of the disc 14, and the end of the compression spring 16 away from the disc 14 is fixed to the bottom end of the inner wall of the circular groove 10. When the disc 14 moves upward, the disc 14 will also pull the compression spring 16. The compression spring 16 will deform under force and generate elastic potential energy. After the display screen body 5 is reinstalled inside the movable frame 3, the operator pushes the movable frame 3 to swing back to reset. The swing of the movable frame 3 will drive the locking plate 8 to swing back to reset. When the locking plate 8 is reset to the initial position, the pull plate 13 is released, and the compression spring 16 will release elastic potential energy. The compression spring 16 will then pull the disc 14 downward. The downward movement of the disc 14 will drive the circular locking rod 15 downward. The circular locking rod 15 will then be inside the circular locking groove 9 again, thereby blocking the swing of the movable frame 3 in the opposite direction, thus realizing the quick installation of the display screen body 5.

[0026] Among them, such as Figure 6 and Figure 8 As shown, the friction mechanism includes a trigger bar 17, multiple sets of fixing rods 18, and a friction bar 19. The friction mechanism is described in detail below: The trigger strip 17 is located on the periphery of the lifting plate 12. When it is necessary to avoid scratching the display screen body 5 and to move the display screen body 5 out of the movable frame 3, the operator first places both ends of the lifting plate 12 in the web of their hand and moves the lifting plate 12 along the inside of the connecting groove 11 until the lifting plate 12 is flush with the exposed area of ​​the display screen body 5. Then, the operator presses the trigger strip 17 with their web of their hand, causing the trigger strip 17 to move towards the display screen body 5. Multiple sets of fixing rods 18 are fixed to the end of the trigger strip 17 near the lifting plate 12. The movement of the trigger strip 17 will drive the multiple sets of fixing rods 18 to move in the same direction. The friction strip 19 is slidably connected to the inside of the lifting plate 12, and the multiple sets of fixing rods 18 are away from the trigger strip 17. One end is fixed to the friction strip 19. The movement of the fixing rod 18 drives the friction strip 19 to move. The movement of the friction strip 19 will eventually squeeze the display screen body 5. When the friction strip 19 squeezes the display screen body 5, friction will be generated between the two. Then the operator continues to move the lifting plate 12 upward, and the friction strip 19 will move upward synchronously with the lifting plate 12. It should be noted that the friction strip 19 is made of silicone rubber, which has good friction and will not scratch the display screen body 5. At this time, the friction strip 19 will drive the display screen body 5 upward through friction, making the display screen body 5 protrude, making it easier to pick up the display screen body 5. The friction strip 19 is adapted to the internal size of the lifting plate 12, which can prevent the friction strip 19 from shaking inside the lifting plate 12.

[0027] As one implementation method, such as Figure 3 , Figure 9 and Figure 10The large frame 1 has an internal anti-fall plate 20. Initially, the anti-fall plate 20 is vertically positioned inside the large frame 1. A connecting rod 21 is fixedly connected inside the anti-fall plate 20, allowing it to rotate along the interior of the large frame 1. Both ends of the connecting rod 21 are rotatably connected to the inner wall of the large frame 1. An arc-shaped spring 22 is fixedly connected between the anti-fall plate 20 and the inner wall of the large frame 1. When the anti-fall plate 20 is vertical, it compresses the arc-shaped spring 22, which in turn deforms under stress, generating elastic potential energy. An unlocking mechanism is located on the periphery of the movable frame 3. This mechanism releases the limiting force on the anti-fall plate 20, allowing it to swing and unfold. When the movable frame 3 swings, it drives the unlocking mechanism, which releases the limiting force on the anti-fall plate 20, causing the arc-shaped spring 22 to release its elastic potential energy and push... When the movable anti-drop plate 20 swings, it will be in a tilted and unfolded state. Subsequently, when the display screen body 5 is taken out, if the operator does not hold it firmly and drops it, the falling display screen body 5 will fall onto the inclined surface of the anti-drop plate 20 under the action of gravity. At this time, the display screen body 5 can slide down the inclined surface of the anti-drop plate 20 into the interior of the large frame 1, avoiding the situation where the display screen body 5 falls directly to the ground and causes damage. Through the above structural design, the safety of taking out the display screen body 5 is improved. When the anti-drop plate 20 needs to be reset, simply push the anti-drop plate 20 in the opposite direction to swing it. After the anti-drop plate 20 is pushed to the initial position, the movable frame 3 swings in the opposite direction. At this time, the movable frame 3 releases the control of the unlocking mechanism, and the unlocking mechanism will naturally reset, blocking the swing path of the anti-drop plate 20 again. Thus, when it is not necessary to protect the display screen body 5, the anti-drop plate 20 is placed inside the large frame 1, improving the overall aesthetics of the equipment.

[0028] Furthermore, such as Figure 9 As shown, the unlocking mechanism includes a nylon rope 23, a cross plate 24, two sets of guide rods 25, a baffle 26, and a guide wheel 27. The unlocking mechanism is described in detail below: The nylon rope 23 is fixedly connected to the movable frame 3. When the movable frame 3 swings, it pulls the nylon rope 23. The horizontal plate 24 is fixedly connected to the end of the nylon rope 23 away from the movable frame 3. When the nylon rope 23 is under force, it pulls the horizontal plate 24 upward. Both sets of guide rods 25 are fixedly connected to the inner wall of the large frame 1, and the guide rods 25 slide through the horizontal plate 24. When the horizontal plate 24 moves, it moves along the outside of the guide rods 25. The end of the baffle 26 near the anti-fall plate 20 is fixedly connected to the horizontal plate 24, and the baffle 26 and the end of the anti-fall plate 20 away from the arc spring 22 are attached. When the horizontal plate 24 moves upward, it will drive the baffle 26 to move upward. As the baffle 26 moves upward, the baffle 26 finally stops blocking the swing path of the anti-fall plate 20, and the arc spring 22 will release its elastic potential energy, pushing the anti-fall plate 20 upward. The anti-fall plate 20 swings to protect the falling display screen body 5. The guide wheel 27 is fixed to the inner wall of the small frame 2 and is in contact with the outer side of the nylon rope 23. The guide wheel 27 can guide the pulling direction of the nylon rope 23. After the anti-fall plate 20 is reset to the initial position, the movable frame 3 swings in the opposite direction. The pulling of the movable frame 3 on the nylon rope 23 gradually ends, and the horizontal plate 24 and the baffle 26 will reset under the action of gravity. After the baffle 26 moves down to the initial position, the baffle 26 will block the swing path of the anti-fall plate 20 again. It should be noted that the elastic potential energy released by the arc spring 7 is sufficient to overcome the friction of the movable frame 3 and the display screen body 5 when swinging, as well as the weight of the horizontal plate 24 and the baffle 26.

[0029] As one implementation method, such as Figure 6 and Figure 10 As shown, the small frame 2 is equipped with a first limiting rope 28 and two sets of second limiting ropes 29 inside. In the initial state, both the first limiting rope 28 and the second limiting rope 29 are in a slack state. The first limiting rope 28 is fixed between the inner wall of the small frame 2 and the movable frame 3. Both sets of second limiting ropes 29 are fixed between the inner wall of the large frame 1 and the anti-fall plate 20. When the movable frame 3 and the anti-fall plate 20 swing, the first limiting rope 28 and the second limiting rope 29 gradually straighten under force, thereby limiting the swing angle of the movable frame 3 and the anti-fall plate 20 and preventing the movable frame 3 and the anti-fall plate 20 from swinging too much, causing the display screen body 5 to fall. The length of the second limiting rope 29 is greater than the length of the first limiting rope 28, and the swing angle of the anti-fall plate 20 is greater than the swing angle of the movable frame 3, so that the area of ​​the anti-fall plate 20 swinging and tilting is sufficient to cover the area of ​​the movable frame 3 swinging and tilting, thereby increasing the area of ​​the anti-fall plate 20 protecting the display screen body 5 from falling.

[0030] Furthermore, such as Figure 6 and Figure 7As shown, a limiting plate 30 is fixed to the top of the inner wall of the small frame 2. The limiting plate 30 is in contact with the end of the movable frame 3 near the limiting rope 28. The limiting plate 30 can limit the reverse swing reset of the movable frame 3. When the movable frame 3 swings in the opposite direction and contacts the limiting plate 30, the circular slot 9 is just below the circular locking rod 15, thereby improving the efficiency of limiting the movable frame 3.

[0031] As one implementation method, such as Figure 1 , Figure 2 and Figure 3 As shown, this application provides a refrigeration appliance, including a cabinet 31, a first side door 32, a second side door 33, and a fixing groove 34, as well as an LED dot matrix display screen disposed in the fixing groove 34. The first side door 32 and the second side door 33 are rotatably connected to the outside of the large frame 1. The first side door 32 and the second side door 33 can rotate along the outside of the large frame 1, thereby realizing the opening and closing of the interior of the large frame 1. The fixing groove 34 is opened on the outside of the first side door 32. The large frame 1 is fixed to the inner wall of the fixing groove 34. The fixing groove 34 provides installation space for the large frame 1, so that the large frame 1 is embedded in the surface of the first side door 32, making it easy to observe the display screen body 5.

[0032] In this embodiment, the large frame 1 is first embedded in the surface of the side door 32 to facilitate observation of the display screen body 5. When the movable frame 3 is placed vertically, the arc spring 7 is compressed and generates elastic potential energy. In the initial state, the circular locking rod 15 is inside the circular locking groove 9. At this time, the circular locking rod 15 blocks the swing direction of the locking plate 8. When it is necessary to swing the locking plate 8, that is, to remove the display screen body 5, it is only necessary to pull the pull plate 13 upward. The upward movement of the pull plate 13 will drive the disc 14 upward, and the upward movement of the disc 14 will drive the circular locking rod 15 upward. The upward movement of the circular locking rod 15 will disengage from the interior of the circular locking groove 9. Once the circular lever 15 stops blocking the swing of the locking plate 8, the arc spring 7 releases its elastic potential energy, pushing the movable frame 3 to swing. The swing of the movable frame 3 then causes the display screen body 5 to swing. As the display screen body 5 swings, its top end detaches from the small frame 2. At this point, the operator places both ends of the lifting plate 12 in the web of their hand and moves the lifting plate 12 along the inside of the connecting groove 11 until it is flush with the exposed area of ​​the display screen body 5. Then, the operator presses the trigger bar 17 with their hand, causing the trigger bar 17 to move towards the display screen body 5. This will cause multiple sets of fixing rods 18 to move in the same direction. The movement of the fixing rods 18 will in turn cause the friction strips 19 to move. The movement of the friction strips 19 will eventually squeeze the display screen body 5. When the friction strips 19 squeeze the display screen body 5, friction will be generated between the two. Then, the operator continues to move the lifting plate 12 upward, and the friction strips 19 will move upward synchronously with the lifting plate 12. The friction strips 19 will then drive the display screen body 5 upward through friction, causing the display screen body 5 to bulge out. Then the operator can grasp the two sides of the display screen body 5 and remove it. When the disc 14 moves upward, the disc 14 will also pull and compress the spring 16. When force is applied, deformation occurs, generating elastic potential energy. After the display screen body 5 is reinstalled inside the movable frame 3, the operator pushes the movable frame 3 to swing back and reset. The swing of the movable frame 3 in the opposite direction will cause the locking plate 8 to swing back and reset. When the locking plate 8 is reset to the initial position, the pull plate 13 is released, and the compression spring 16 will release elastic potential energy. The compression spring 16 will then pull the disc 14 down, and the downward movement of the disc 14 will cause the circular locking rod 15 to move down. The circular locking rod 15 will then be inside the circular locking groove 9 again, thereby blocking the swing of the movable frame 3 in the opposite direction, thus realizing the quick installation of the display screen body 5. Initially, the anti-fall plate 20 is vertically positioned inside the large frame 1. When the anti-fall plate 20 is vertical, it is compressed by the arc spring 22, which in turn deforms under force and generates elastic potential energy. When the movable frame 3 swings, it pulls the nylon rope 23. The force on the nylon rope 23 pulls the horizontal plate 24 upward, which in turn moves the baffle 26 upward. As the baffle 26 moves upward, it eventually stops blocking the swing path of the anti-fall plate 20. The arc spring 22 then releases its elastic potential energy, pushing the anti-fall plate 20 to swing. The anti-fall plate 20 then swings and is in a tilted, unfolded state. When the display screen body 5 is taken out, if the operator does not hold it firmly and it falls, the falling display screen body 5 will fall onto the inclined surface of the anti-fall plate 20 after it swings under the influence of gravity. At this time, the display screen body 5 can slide down the inclined surface of the anti-fall plate 20 into the large frame 1, preventing the display screen body 5 from falling directly to the ground.

[0033] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An LED dot matrix display screen comprising a large frame (1) and a small frame (2) fixed inside the large frame (1), the inside of the small frame (2) being provided with a display screen body (5), characterized in that, Also include: The inner side of the movable frame (3) is fixedly connected with a connecting rod one (4), the connecting rod one (4) is rotatably connected with the inner wall of the small frame (2), the display screen body (5) is slidably connected to the top of the movable frame (3), the outer side of the movable frame (3) is provided with a wireless battery (6), the wireless battery (6) is used for providing power for the display screen body (5), the inner wall between the movable frame (3) and the small frame (2) is fixedly connected with an arc spring one (7); The card plate (8) is fixed on the side of the movable frame (3) away from the display screen body (5), the top of the card plate (8) is provided with a circular clamping groove (9), the top of the small frame (2) is provided with a circular sliding groove (10), the inner side of the circular sliding groove (10) is provided with a clamping mechanism matched with the circular clamping groove (9), and the clamping mechanism is used for limiting the position of the movable frame (3); At least two groups of connecting grooves (11) are arranged on the side of the movable frame (3) away from the display screen body (5), the inner side of the two groups of connecting grooves (11) is slidably connected with a lifting plate (12), the inner side of the lifting plate (12) is provided with a friction mechanism, and the friction mechanism is used for moving the position of the display screen body (5).

2. The LED dot matrix display according to claim 1, characterized in that, The clamping mechanism comprises a pull disc (13), a disc (14), a circular clamping rod (15) and a compression spring (16), the disc (14) is fixedly connected to the bottom end of the pull disc (13), the disc (14) is slidably connected to the inner side of the circular sliding groove (10), the circular clamping rod (15) is fixedly connected to the bottom end of the disc (14), and the circular clamping rod (15) penetrates the small frame (2), the bottom end of the circular clamping rod (15) is slidably connected to the inner side of the circular clamping groove (9), and the compression spring (16) is fixedly connected to the bottom end of the disc (14), and the end of the compression spring (16) away from the disc (14) is fixedly connected with the inner wall bottom end of the circular sliding groove (10).

3. The LED dot matrix display according to claim 1, characterized in that, The friction mechanism comprises a trigger bar (17), a plurality of fixed rods (18) and a friction bar (19), the trigger bar (17) is arranged on the periphery of the lifting plate (12), the plurality of fixed rods (18) are fixedly connected with the end of the trigger bar (17) close to the lifting plate (12), the friction bar (19) is slidably connected to the inner side of the lifting plate (12), and the end of the plurality of fixed rods (18) away from the trigger bar (17) is fixedly connected with the friction bar (19).

4. The LED dot matrix display of claim 1, wherein, The inner side of the large frame (1) is provided with a anti-falling plate (20), the inner side of the anti-falling plate (20) is fixedly connected with a connecting rod two (21), the two ends of the connecting rod two (21) are rotatably connected with the inner wall of the large frame (1), the inner wall between the anti-falling plate (20) and the large frame (1) is fixedly connected with an arc spring two (22), the periphery of the movable frame (3) is provided with an unlocking mechanism, the unlocking mechanism is used for ending the limiting of the anti-falling plate (20), so that the anti-falling plate (20) swings and expands.

5. The LED dot matrix display according to claim 4, characterized in that, The unlocking mechanism comprises a nylon rope (23), a horizontal plate (24), two groups of guide rods (25), a baffle (26) and a guide wheel (27), the nylon rope (23) is fixedly connected with the movable frame (3), the horizontal plate (24) is fixedly connected with one end of the nylon rope (23) away from the movable frame (3), the two groups of guide rods (25) are fixedly connected with the inner wall of the large frame (1), and the guide rods (25) slide through the horizontal plate (24), one end of the baffle (26) close to the anti-falling plate (20) is fixedly connected with the horizontal plate (24), and the baffle (26) is attached to one end of the anti-falling plate (20) away from the arc-shaped spring two (22), the guide wheel (27) is fixedly connected on the inner wall of the small frame (2), and the guide wheel (27) is attached to the outer side of the nylon rope (23).

6. The LED dot matrix display of claim 1, wherein, The inner part of the small frame (2) is respectively provided with a limiting rope one (28) and two groups of limiting rope two (29), the limiting rope one (28) is fixedly connected between the inner wall of the small frame (2) and the movable frame (3), and the two groups of limiting rope two (29) are fixedly connected between the inner wall of the large frame (1) and the anti-falling plate (20).

7. The LED dot matrix display according to claim 6, characterized in that, The length of the limiting rope two (29) is greater than that of the limiting rope one (28).

8. The LED dot matrix display according to claim 6, characterized in that, The inner wall top end of the small frame (2) is fixedly connected with a limiting plate (30), and the limiting plate (30) is attached to one end of the movable frame (3) close to the limiting rope one (28).

9. The LED dot matrix display according to claim 3, characterized in that, The friction strip (19) is made of silicone rubber, and the friction strip (19) is matched with the size of the inside of the lifting plate (12).

10. A refrigeration household appliance, characterized in that, The LED dot matrix display screen comprises a box body (31), a side door one (32), a side door two (33) and a fixed groove (34), and the LED dot matrix display screen as claimed in any one of claims 1-9 is arranged in the fixed groove (34). The side door one (32) and the side door two (33) are both rotationally connected to the outer side of the large frame (1), the fixed groove (34) is arranged on the outer side of the side door one (32), and the large frame (1) is fixedly connected to the inner wall of the fixed groove (34).

Images