A background wall device for interior decoration

Abstract

The utility model discloses a background wall device for indoor decoration, include: the back wall board, its top and bottom are all set to the recessed structure, the recessed structure's right side inner wall is seted up with three installation perforation, transparent board, is fixed in the back wall board left side, the closing board, is two groups and is fixed respectively installed in the back of the back wall board's front side, U -shaped support, set up in the back wall board's inside bottom, the alternate bracing positioning transmission assembly, install between two closing boards. The utility model discloses through setting up a series of structures, the drive conveyor belt type simulation background curtain rotates to switch the multiple background wall picture of its surface flexibly, and personnel can replace according to mood or private and different scene of guest flexibly, improve the use flexibility, and can convey the belt type simulation background curtain and adjust tight, avoid its subsequent loosening and lead to the phenomenon of not continuing steady drive rotation, improve the subsequent long -term use stability.

Description

Technical Field

[0001] This utility model relates to the technical field of background wall equipment, specifically a background wall device for interior decoration. Background Technology

[0002] Interior decoration is the process of beautifying and functionally designing interior spaces, aiming to create a comfortable, beautiful, and practical living environment. It encompasses various aspects such as wall decoration, furniture arrangement, lighting design, and soft furnishings. Among these, wall decoration, as an important component of interior decoration, can create different styles and atmospheres through methods such as paint, wallpaper, and veneer materials. Background walls, as a commonly used decorative form in interior decoration, can effectively enhance the aesthetics of the interior and create a comfortable environment for people.

[0003] However, existing interior decorative background walls are mostly fixed to the wall surface by pasting, which has obvious shortcomings in actual use: their structure of being fixed to the wall by pasting is functionally limited and lacks a mechanism for people to flexibly change the background. It is difficult to meet the requirements of people to flexibly adjust according to their mood, private scene or entertaining scene, etc., and the flexibility of use is not good. In view of this, this application proposes an interior decorative background wall device to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide an interior decorative background wall device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a background wall device for interior decoration, comprising:

[0006] The U-shaped wall panel has a recessed structure at both the top and bottom, and three mounting holes are provided on the right inner wall of the recessed structure.

[0007] A transparent panel is embedded and fixed to the left side of the U-shaped wall panel;

[0008] The sealing panels consist of two sets, which are respectively fixedly installed on the front and rear sides of the U-shaped wall panel;

[0009] U-shaped supports are installed at the bottom inner side of the U-shaped wall panel;

[0010] An alternating tension support positioning transmission assembly is installed between two sealing plates and located inside the U-shaped wall panel. A brake motor with an output shaft fixedly connected to the alternating tension support positioning transmission assembly is fixedly installed on the top front side of the sealing plate on the front side.

[0011] The conveyor belt type simulated background curtain is driven by the alternating tensioning and positioning transmission assembly. Multiple background wall paintings are printed on the outer side of the conveyor belt type simulated background curtain. The alternating tensioning and positioning transmission assembly is used to drive the conveyor belt type simulated background curtain to rotate when the brake motor is started, so as to replace the background wall paintings. The replaceable background wall paintings make it convenient for people to flexibly change them according to their mood or different scenarios for private or visiting guests.

[0012] The threaded conveyor tensioning assembly is embedded and fixed on the inner wall of the bottom of the U-shaped wall panel and fixedly connected to the bottom of the U-shaped support. The threaded conveyor tensioning assembly is used to drive the U-shaped support to move up and down. The downward movement of the U-shaped support drives the alternating tensioning and positioning transmission assembly to tighten the conveyor belt-type simulated background curtain, which can prevent the conveyor belt-type simulated background curtain from becoming unstable due to prolonged use.

[0013] The L-shaped light strip support is connected to the top left side of the U-shaped wall panel. Its bottom is set as a concave structure and a flexible light strip is glued and fixed thereon.

[0014] Preferably, the L-shaped light strip support is bonded to the top left side of the U-shaped wall panel with strong adhesive.

[0015] Preferably, the L-shaped light strip support is detachably connected to the top left side of the U-shaped wall panel.

[0016] Preferably, the right side of the L-shaped light strip support is in movable contact with the top left side of the U-shaped wall panel. The top left side of the U-shaped wall panel has three threaded grooves, and a knob-type bolt is threaded into the threaded grooves. The top right side of the L-shaped light strip support has three bolt holes, and the stud section of the knob-type bolt is movably fitted into the threaded holes.

[0017] Preferably, the alternating tensioning positioning transmission assembly includes a first rotating roller, a second rotating roller, two positioning rotating rollers, and multiple auxiliary support rollers. The first rotating roller is rotatably mounted on the top front side of the rear sealing plate, the second rotating roller is rotatably mounted between the inner walls of the front and rear sides of the U-shaped support, the two positioning rotating rollers are rotatably mounted on the left side of the two sealing plates that are close to each other, the transparent plate is located between the two positioning rotating rollers, and the multiple auxiliary support rollers are rotatably mounted between the two sealing plates that are close to each other. The multiple auxiliary support rollers are arranged alternately from top to bottom. The conveyor belt-type simulated background curtain is driven and connected to the first rotating roller, the second rotating roller, the two positioning rotating rollers, and the multiple auxiliary support rollers. The output shaft of the brake motor is fixedly connected to the front end of the first rotating roller. The total length of the conveyor belt-type simulated background curtain is increased by using the multiple auxiliary support rollers arranged alternately.

[0018] Preferably, the threaded conveying and tightening assembly includes a rectangular tube, a rectangular slider, two vertical guide rods, and a T-shaped screw. The rectangular tube is embedded and fixed on the bottom inner wall of the U-shaped wall panel. The bottom end of the rectangular tube is set as a sealing structure. The rectangular slider is slidably sleeved inside the rectangular tube. The two vertical guide rods are fixedly connected to the bottom inner wall of the rectangular tube. The rectangular slider is slidably sleeved on the two vertical guide rods. The top of the rectangular slider is fixedly connected to the bottom of the U-shaped support. The T-shaped screw is located in the concave structure below and is rotatably embedded in the bottom inner wall of the rectangular tube. The bottom of the rectangular slider has a threaded hole for threaded connection with the T-shaped screw.

[0019] Preferably, both the first and second rollers are fitted with anti-slip rubber sleeves on their outer sides, and the outer side of the anti-slip rubber sleeves is pressed tightly against the inner side of the conveyor belt-type simulation background screen.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. By combining the flexible light strip, U-shaped support, conveyor belt-type simulated background curtain, alternating tensioning positioning transmission component, transparent plate, U-shaped wall panel, sealing plate and brake motor, the multiple background murals on its surface can be flexibly switched by driving the conveyor belt-type simulated background curtain to rotate. This allows people to change it flexibly according to their mood or different scenes for private or visiting guests, improving the flexibility of use.

[0022] 2. By using the U-shaped support, alternating tensioning positioning transmission assembly and threaded conveyor tightening assembly, when the conveyor belt simulation background curtain becomes loose and cannot rotate stably after long-term use, the conveyor belt simulation background curtain can be tightened and adjusted to avoid the phenomenon that it cannot continue to drive rotation stably due to subsequent loosening, thus improving the stability of long-term use.

[0023] 3. By using an L-shaped light strip support, flexible light strip, knob-type bolt, threaded groove and bolt through hole in another way, the L-shaped light strip support can be disassembled. The detachable L-shaped light strip support makes it convenient for personnel to replace the flexible light strip in the future, further improving the flexibility of use.

[0024] This utility model features a series of structures that facilitate the rotation of the conveyor belt-type simulated backdrop to flexibly switch between multiple background murals on its surface. This allows users to easily change the backdrop according to their mood, personal needs, or different scenarios with guests, improving its flexibility. Furthermore, it allows for the tension adjustment of the conveyor belt-type simulated backdrop to prevent it from becoming loose and unable to continue rotating stably, thus improving its long-term stability. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of an interior decorative background wall device according to Embodiment 1 of this utility model;

[0026] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure;

[0027] Figure 3 This is a cross-sectional structural diagram of the U-shaped support, the second rotating roller, and the threaded conveying and tightening assembly connecting parts of an interior decorative background wall device according to Embodiment 1 of this utility model;

[0028] Figure 4 for Figure 1 A magnified schematic diagram of the local structure;

[0029] Figure 5 This is a structural schematic diagram of an interior decorative background wall device according to Embodiment 2 of this utility model;

[0030] Figure 6 for Figure 5 A magnified schematic diagram of a portion of the structure.

[0031] In the diagram: 1. U-shaped wall panel; 101. Mounting perforation; 102. Transparent panel; 103. Sealing plate; 104. Brake motor; 2. U-shaped support; 3. First rotating roller; 301. Second rotating roller; 302. Auxiliary support roller; 303. Positioning roller; 4. Conveyor belt type simulated background curtain; 5. Rectangular tube; 501. Rectangular slider; 502. Vertical guide rod; 503. T-shaped screw; 6. L-shaped light strip support; 601. Flexible light strip; 602. Knob bolt. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Example 1

[0034] like Figures 1 to 4 As shown in this embodiment, an interior decorative background wall device includes:

[0035] The U-shaped wall panel 1 has a recessed structure at both the top and bottom, and three mounting holes 101 are provided on the inner right side wall of the recessed structure.

[0036] A transparent plate 102 is embedded and fixed on the left side of the U-shaped wall panel 1; wherein the left side of the U-shaped wall panel 1 has a rectangular embedding through hole that is fixedly connected to the outside of the transparent plate 102.

[0037] The sealing plate 103 consists of two sets, which are respectively fixedly installed on the front and rear sides of the U-shaped wall panel 1;

[0038] U-shaped support 2 is installed on the inner bottom of the U-shaped wall panel 1;

[0039] An alternating tension support positioning transmission assembly is installed between two sealing plates 103 and located inside the U-shaped wall panel 1. A brake motor 104 with an output shaft fixedly connected to the alternating tension support positioning transmission assembly is fixedly installed on the top front side of the sealing plate 103 on the front side.

[0040] The conveyor belt type simulated background curtain 4 is connected to the alternating tensioning and positioning transmission assembly. Multiple background wall paintings are printed on the outer side of the conveyor belt type simulated background curtain 4 in sequence. The alternating tensioning and positioning transmission assembly is used to drive the conveyor belt type simulated background curtain 4 to rotate when the brake motor 104 is started, so as to replace the background wall paintings. The replaceable background wall paintings make it convenient for people to flexibly change them according to their mood or different scenarios for private or visiting guests.

[0041] The threaded conveyor tensioning assembly is embedded and fixed on the bottom inner wall of the U-shaped wall panel 1 and fixedly connected to the bottom of the U-shaped support 2. The threaded conveyor tensioning assembly is used to drive the U-shaped support 2 to move up and down. The downward movement of the U-shaped support 2 drives the alternating tensioning positioning transmission assembly to tighten the conveyor belt-type simulated background curtain 4, which prevents the conveyor belt-type simulated background curtain 4 from becoming unstable due to prolonged use.

[0042] The L-shaped light strip support 6 is connected to the top left side of the U-shaped wall panel 1. Its bottom is set as a concave structure and a flexible light strip 601 is glued and fixed thereon.

[0043] Furthermore, the L-shaped light strip bracket 6 is firmly attached to the top left side of the U-shaped wall panel 1 with strong adhesive.

[0044] Furthermore, such as Figure 2 As shown, the alternating tensioning positioning transmission assembly includes a first rotating roller 3, a second rotating roller 301, two positioning rotating rollers 303, and multiple auxiliary support rollers 302. The first rotating roller 3 is rotatably mounted on the top front side of the rear sealing plate 103. The second rotating roller 301 is rotatably mounted between the inner walls of the front and rear sides of the U-shaped support 2. The two positioning rotating rollers 303 are rotatably mounted on the left side of the two sealing plates 103 that are close to each other. The transparent plate 102 is located between the two positioning rotating rollers 303. The multiple auxiliary support rollers 302 are rotatably mounted between the two sealing plates 103 that are close to each other. The multiple auxiliary support rollers 302 are arranged alternately from top to bottom. The conveyor belt type simulated background curtain 4 is driven and connected to the first rotating roller 3, the second rotating roller 301, the two positioning rotating rollers 303, and the multiple auxiliary support rollers 302. The output shaft of the brake motor 104 is fixedly connected to the front end of the first rotating roller 3. The total length of the conveyor belt type simulated background curtain 4 is increased by using the multiple auxiliary support rollers 302 that are arranged alternately.

[0045] In this embodiment, anti-slip rubber sleeves are adhesively fitted to the outer sides of both the first roller 3 and the second roller 301. The outer sides of the anti-slip rubber sleeves are pressed tightly against the inner side of the conveyor belt-type simulated background curtain 4. The two anti-slip rubber sleeves enhance the friction with the inner side of the conveyor belt-type simulated background curtain 4 during transmission. Two first bearings are fixedly connected to the adjacent sides of the two sealing plates 103. The inner rings of the first bearings are fixedly fitted to the outer sides of the corresponding positioning rollers 303, which enables the positioning rollers 303 to be rotated. Multiple second bearings are fixedly connected to the adjacent sides of the two sealing plates 103. The bearing and the auxiliary support roller 302 are both fixedly connected to the front and rear ends of the first pin shaft. The inner ring of the second bearing is fixedly fitted to the outer side of the corresponding first pin shaft. The second bearing and the first pin shaft are used to rotate the auxiliary support roller 302. The front top of the rear sealing plate 103 and the front and rear inner walls of the U-shaped support 2 are both fixedly connected to the third bearing. The rear end of the first roller 3 and the front and rear ends of the second roller 301 are both fixedly connected to the second pin shaft. The inner ring of the third bearing is fixedly fitted to the outer side of the corresponding second pin shaft. This is used to rotate the first roller 3 and the second roller 301.

[0046] In this embodiment, the first rotating roller 3, the second rotating roller 301, the two positioning rollers 303, and the multiple auxiliary support rollers 302 work together to drive and support the conveyor belt-type simulated background screen 4. When the brake motor 104 is started to drive the first rotating roller 3 to rotate, the first rotating roller 3 drives the conveyor belt-type simulated background screen 4 to rotate. The friction of the conveyor belt-type simulated background screen 4 drives the second rotating roller 301, the two positioning rollers 303, and the multiple auxiliary support rollers 302 to rotate, thus achieving the effect of driving the conveyor belt-type simulated background screen 4 to rotate. The rotatable nature of the conveyor belt-type simulated background screen 4 allows users to flexibly switch between multiple background murals on its surface. The replaceable nature of the background murals allows users to flexibly change them according to their mood or different scenarios for private or visiting guests, improving the flexibility of use. In addition, by using multiple auxiliary support rollers 302 to increase the total length of the conveyor belt-type simulated background screen 4, the number of background murals can be increased within a limited space by increasing the length.

[0047] Furthermore, such as Figure 2 and 3As shown, the threaded conveying and tightening assembly includes a rectangular tube 5, a rectangular slider 501, two vertical guide rods 502, and a T-shaped screw 503. The rectangular tube 5 is embedded and fixed on the bottom inner wall of the U-shaped wall panel 1. The bottom end of the rectangular tube 5 is set as a sealing structure. The rectangular slider 501 is slidably sleeved inside the rectangular tube 5. The two vertical guide rods 502 are fixedly connected to the bottom inner wall of the rectangular tube 5. The rectangular slider 501 is slidably sleeved on the two vertical guide rods 502. The top of the rectangular slider 501 is fixedly connected to the bottom of the U-shaped support 2. The T-shaped screw 503 is located in the concave structure below and is rotatably embedded in the bottom inner wall of the rectangular tube 5. The bottom of the rectangular slider 501 is provided with a threaded hole for threaded connection with the T-shaped screw 503.

[0048] In this embodiment, the bottom inner wall of the U-shaped wall panel 1 is provided with an insert hole for fixed connection to the outer side of the rectangular tube 5. The bottom end of the rectangular tube 5 is provided with a circular through hole, and a fourth bearing is fixedly fitted inside the circular through hole. The inner side of the inner ring of the fourth bearing is fixedly connected to the outer side of the T-shaped screw 503, which serves to rotate and install the T-shaped screw 503. The bottom of the rectangular slider 501 is provided with two vertical guide holes that are respectively slidably fitted to the outer side of the corresponding vertical guide rod 502, which serves to guide the vertical sliding of the rectangular slider 501. A limit groove is provided on one side of the rectangular slider 501, and a limit block is fixedly connected to the inner wall of the right side of the rectangular tube 5 and slidably connected to the limit groove, which serves to limit and prevent the rectangular slider 501 from falling off.

[0049] In this implementation scheme, the rectangular tube 5, rectangular slider 501, two vertical guide rods 502, and T-shaped screw 503 work together. By rotating the T-shaped screw 503 in the forward direction, the T-shaped screw 503 rotates within the threaded hole and drives the rectangular slider 501 to slide downward within the rectangular tube 5. The rectangular slider 501 slides downward on the two vertical guide rods 502, which in turn drives the U-shaped support 2 to move downward. The U-shaped support 2 then drives the second rotating roller 301 to move downward. The second rotating roller 301 pulls and squeezes the bottom inner side of the conveyor belt-type simulated background curtain 4 downward, achieving an adjustable tension effect on the conveyor belt-type simulated background curtain 4. This avoids the effect of the conveyor belt-type simulated background curtain 4 loosening after long-term use, which would prevent it from continuing to drive the rotation stably, thus improving its long-term stability.

[0050] It should be noted that the brake motor 104 is preferably a 5RK series small brake motor; the flexible light strip 601 is equipped with a light strip power supply, which can be connected to the indoor control switch on site via wires; since the background wall scene is an indoor scene with complete power supply measures and sufficient conditions, the above electrical components can be configured with conventional motor switches to connect to the on-site mains power, and connected to the power input interface of each device through conventional power distribution devices such as circuit breakers, contactors, and power modules (not marked in the figure) to form a complete power supply circuit. This power supply scheme is a conventional power distribution method for motor equipment and is a well-known and mature technology in the industry, so it will not be elaborated further here;

[0051] In addition, the background wall painting on the conveyor belt-type simulated background curtain 4 can be flexibly customized according to the needs of personnel. It can be any of the forms such as traditional ink painting, simulated stone painting, and landscape painting.

[0052] It should be further noted that the rectangular tube 5, the rectangular slider 501, and the T-shaped screw 503 are all made of stainless steel. Among them, the T-shaped screw 503 has a high wear-resistant load-bearing specification with an outer thread clearance of 0.3-0.5mm. With the high hardness, strong wear resistance, and good maintenance-free properties of stainless steel, the stability of the device's long-term connection and drive support can be guaranteed.

[0053] This embodiment facilitates the rotation of the conveyor belt-type simulated background curtain 4 to flexibly switch between multiple background murals on its surface. This allows for flexible replacement by personnel according to their mood or different scenarios for private use and visiting guests, improving the flexibility of use. It also allows for the tensioning and adjustment of the conveyor belt-type simulated background curtain 4 to prevent it from becoming loose and unable to continue to rotate stably, thus improving its long-term stability.

[0054] The usage method of this embodiment is as follows: When using the interior decoration background wall device, the personnel use multiple external bolts or expansion bolts to install and fix the U-shaped wall panel 1 to the wall through multiple mounting holes 101. The transparent plate 102 allows the personnel to directly view the background wall painting on the conveyor belt-type simulated background curtain 4. The flexible light strip 601 is used to provide auxiliary lighting when the personnel turn it on, so as to further enhance the atmosphere of use.

[0055] When a person starts the brake motor 104, it drives the first rotating roller 3 to rotate. The first rotating roller 3 drives the conveyor belt-type simulated background curtain 4 to rotate. The friction of the conveyor belt-type simulated background curtain 4 drives the second rotating roller 301, two positioning rotating rollers 303, and multiple auxiliary support rollers 302 to rotate, thus achieving the effect of driving the conveyor belt-type simulated background curtain 4 to rotate. The rotatable conveyor belt-type simulated background curtain 4 allows people to flexibly switch between multiple background murals on its surface. The replaceable background murals allow people to flexibly change them according to their mood or different scenarios for private or visiting guests, improving the flexibility of use. In addition, by using multiple auxiliary support rollers 302 to increase the total length of the conveyor belt-type simulated background curtain 4, the number of background murals can be increased within a limited space by increasing the length.

[0056] In the event that the conveyor belt-type simulated background curtain 4 becomes loose and unable to rotate stably after prolonged use, the operator rotates the T-shaped screw 503 in the forward direction. The T-shaped screw 503 rotates within the threaded hole and drives the rectangular slider 501 to slide downward within the rectangular tube 5. The rectangular slider 501 slides downward on the two vertical guide rods 502, which in turn drives the U-shaped support 2 to move downward. The U-shaped support 2 then drives the second rotating roller 301 to move downward. The second rotating roller 301 pulls and squeezes the bottom inner side of the conveyor belt-type simulated background curtain 4 downward, achieving an adjustable tension effect. This prevents the conveyor belt-type simulated background curtain 4 from becoming loose after prolonged use, thus improving its stability during long-term use.

[0057] Example 2

[0058] Reference Figure 5-6 As shown, this embodiment differs from Embodiment 1 in that: the L-shaped light strip support 6 is detachably connected to the top left side of the U-shaped wall panel 1, wherein the right side of the L-shaped light strip support 6 is in movable contact with the top left side of the U-shaped wall panel 1, the top left side of the U-shaped wall panel 1 has three threaded grooves, and a knob bolt 602 is threaded into the threaded grooves. The top right side of the L-shaped light strip support 6 has three bolt holes, and the stud section of the knob bolt 602 is movably fitted into the threaded holes.

[0059] This embodiment allows for the disassembly of the L-shaped light strip support 6. The detachable L-shaped light strip support 6 facilitates the replacement of the flexible light strip 601 by subsequent personnel, further improving the flexibility of use.

[0060] The method of use in this embodiment is as follows: Unlike Embodiment 1, it also has the following functions: Utilizing the provided knob-type bolt 602, threaded groove, and bolt through-hole, the knob-type bolt 602 is rotated in the reverse direction to separate it from the corresponding threaded groove, releasing the lock on the L-shaped light strip support 6. The L-shaped light strip support 6 can then be directly disassembled and removed. During installation, the knob-type bolt 602 is rotated in the forward direction to gradually tighten it into the corresponding threaded groove, using the knob-type bolt 602 to lock the L-shaped light strip support 6. This achieves the effect of disassembling the L-shaped light strip support 6. The detachable nature of the L-shaped light strip support 6 facilitates subsequent replacement of the flexible light strip 601, further improving the flexibility of use.

[0061] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An interior decorative background wall device, comprising a U-shaped wall panel (1), characterized in that: include: The U-shaped wall panel (1) has a concave structure at both the top and bottom, and three mounting holes (101) are provided on the right inner wall of the concave structure. A transparent panel (102) is embedded and fixed on the left side of the U-shaped wall panel (1); The sealing plate (103) consists of two sets, which are respectively fixedly installed on the front and rear sides of the U-shaped wall panel (1); U-shaped support (2) is set at the bottom of the inner side of the U-shaped wall panel (1); An alternating tension positioning transmission assembly is installed between two sealing plates (103) and located inside the U-shaped wall panel (1). The front top of the sealing plate (103) is fixedly installed with a brake motor (104) whose output shaft is fixedly connected to the alternating tension positioning transmission assembly. The conveyor belt type simulated background curtain (4) is connected to the alternating tensioning and positioning transmission assembly. Multiple background wall paintings are printed on the outer side of the conveyor belt type simulated background curtain (4). The threaded conveying and tightening assembly is embedded and fixed on the bottom inner wall of the U-shaped wall panel (1) and fixedly connected to the bottom of the U-shaped support (2); The L-shaped light strip support (6) is connected to the top left side of the U-shaped wall panel (1), and its bottom is set as a concave structure and a flexible light strip (601) is glued and fixed thereon.

2. The wall covering device of claim 1, wherein: The L-shaped light strip support (6) is bonded to the top left side of the U-shaped wall panel (1) with strong adhesive.

3. The wall covering device of claim 1, wherein: The L-shaped light strip support (6) is detachably connected to the top left side of the U-shaped wall panel (1).

4. The background wall device for interior decoration according to claim 1, characterized in that: The right side of the L-shaped light strip support (6) is in contact with the top left side of the U-shaped wall panel (1). The top left side of the U-shaped wall panel (1) has three threaded grooves, and a knob bolt (602) is threaded into the threaded grooves. The top right side of the L-shaped light strip support (6) has three bolt holes, and the stud section of the knob bolt (602) is movably fitted into the threaded holes.

5. The wall covering device of claim 1, wherein: The alternating tensioning positioning transmission assembly includes a first rotating roller (3), a second rotating roller (301), two positioning rotating rollers (303), and multiple auxiliary support rollers (302). The first rotating roller (3) is rotatably mounted on the top front side of the rear sealing plate (103). The second rotating roller (301) is rotatably mounted between the front and rear inner walls of the U-shaped support (2). The two positioning rotating rollers (303) are rotatably mounted on the left side of the two sealing plates (103) on the adjacent side. The transparent plate (102) is located between the two positioning rotating rollers (303). Multiple auxiliary support rollers... Rollers (302) are rotatably installed between the two sealing plates (103) on the same side. Multiple auxiliary support rollers (302) are staggered from top to bottom. The conveyor belt type simulation background curtain (4) is driven and connected to the first rotating roller (3), the second rotating roller (301), the two positioning rotating rollers (303) and multiple auxiliary support rollers (302). The output shaft of the brake motor (104) is fixedly connected to the front end of the first rotating roller (3). The total length of the conveyor belt type simulation background curtain (4) is increased by staggering multiple auxiliary support rollers (302).

6. The wall covering device of claim 1, wherein: The threaded conveying and tightening assembly includes a rectangular tube (5), a rectangular slider (501), two vertical guide rods (502), and a T-shaped screw (503). The rectangular tube (5) is embedded and fixed on the bottom inner wall of the U-shaped wall panel (1). The bottom end of the rectangular tube (5) is set as a sealing structure. The rectangular slider (501) is slidably sleeved in the rectangular tube (5). The two vertical guide rods (502) are fixedly connected to the bottom inner wall of the rectangular tube (5). The rectangular slider (501) is slidably sleeved on the two vertical guide rods (502). The top of the rectangular slider (501) is fixedly connected to the bottom of the U-shaped support (2). The T-shaped screw (503) is located in the concave structure below and is rotatably embedded in the bottom inner wall of the rectangular tube (5). The bottom of the rectangular slider (501) is provided with a threaded hole for threaded connection with the T-shaped screw (503).

7. The background wall device for interior decoration according to claim 5, characterized in that: The first roller (3) and the second roller (301) are both fitted with anti-slip rubber sleeves on their outer sides, and the outer side of the anti-slip rubber sleeves is pressed tightly against the inner side of the conveyor belt-type simulation background screen (4).

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