Propaganda film display device

Abstract

The utility model discloses a publicity sheet display device which comprises a base and universal wheels installed at four corners of the outer wall of the bottom of the base, a main block is arranged on the outer wall of the top of the base, a notch is formed in the outer wall of the other end of the main block, a display board is inserted into the notch, and a side block is fixedly connected to the outer wall of the other end of the display board. Contents displayed on the display board can be observed through tempered glass, displayed files such as propaganda films, scripts or posters are in an all-dimensional wrapping state through the main block and the side blocks, the files can be protected easily, a circular plate can be driven to rotate through starting of the first driving motor, the circular plate can be driven to rotate through the lifting base and the lifting block, and therefore the files can be conveniently and rapidly displayed through the lifting base and the lifting block. The main block can be driven to rotate by rotating the main block, so that the orientation of the file displayed on the display board can be changed, the device is suitable for more use scenes, meanwhile, the orientation of the display board is changed without changing the overall orientation of the device, use is facilitated, and the workload of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of display devices, in particular to a display device for promotional films. Background Art

[0002] Promotional videos are a method of expression in making television and movies. They are planned, shot, recorded, edited, dubbed, scored, and synthesized for each level within the enterprise in a focused, targeted, and orderly manner. When a promotional video is released, the producer will usually need to use a display device to display the script or poster of the promotional video to help customers or audiences better understand the background and content of the promotional video.

[0003] After searching, the patent publication number "CN216623701U" is a video promotional film script display device, including a base, a lifting mechanism is installed on the top of the base, a display mechanism is installed on the top of the lifting mechanism, the display mechanism includes a display frame, a window is installed on the front of the display frame, the inner top and bottom of the display frame are both provided with a first guide shaft, a sliding sleeve is slidably connected to the first guide shaft, a first slider is installed on the sliding sleeve, and two first slider brackets are installed with display boards. Compared with the prior art, the utility model stores and displays script files by setting a display mechanism to avoid direct exposure of the files to the air, which can effectively prevent the files from being contaminated, and the display mechanism can be cleaned by a brush plate, which is very convenient to use. At the same time, the display mechanism is adjusted by a lifting mechanism, which can facilitate the application of the device in various occasions, and the flexibility of use is very high.

[0004] The above technical features have the following shortcomings: in most display devices in the prior art, the orientation of one side of the display is not easy to change during the display process, and thus it is not possible to allow more people to observe the content displayed on the display device. When the orientation of one side of the display needs to be changed, the staff is required to manually change the orientation of the entire device, thereby increasing the workload of the staff. Therefore, it is urgent to design a display device for promotional films to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a display device for promotional films to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A display device for promotional films, comprising a base and universal wheels installed at four corners of the outer wall at the bottom of the base, the top outer wall of the base is provided with a main block, the outer wall at the other end of the main block is provided with a notch, a display board is inserted in the notch, the outer wall at the other end of the display board is fixedly connected to a side block, and a groove is provided on the outer wall on one side of the side block, tempered glass is installed on the outer wall on one side of the main block, a clamping mechanism for fixing the display content is provided on one side of the display board, the top outer wall of the base is rotatably connected to a circular plate through a bearing, the top outer wall of the circular plate is fixedly connected to a lifting seat, a battery is installed on the other side of the top outer wall of the circular plate, and both ends of the lifting seat Side grooves are provided between the inner walls, and a first one-way threaded rod is rotatably connected between the top inner wall and the bottom inner wall of the vertical groove through a bearing, a lifting block is rotatably sleeved on the top of the circumferential outer wall of the first one-way threaded rod through a thread, and one side outer wall of the lifting block is fixedly connected to the other side outer wall of the main block, and a driving mechanism for rotating the two first one-way threaded rods is provided on the top of the lifting seat, a first driving motor is installed on the bottom outer wall of the base, and one end of the output shaft of the first driving motor is fixedly connected to the bottom outer wall of the circular plate, a control panel is installed on the bottom of one side outer wall of the main block, and the first driving motor is electrically connected to the battery and the control panel.

[0008] Preferably, the clamping mechanism comprises two transverse blocks, which are respectively fixedly connected to the two ends of the outer wall of one side of the display board, and the outer walls at the opposite ends of the two transverse blocks are provided with transverse grooves, and a third one-way threaded rod is rotatably connected between the inner wall of one side of the transverse groove and the outer wall of one side of the display board through a bearing, and the circumferential outer wall of the third one-way threaded rod is rotatably sleeved on a limit plate through a thread, and the outer wall of one side of the two transverse blocks is provided with a rotating block, and the outer wall of the other side of the rotating block is fixedly connected to the outer wall of one side of the third one-way threaded rod.

[0009] Preferably, the driving mechanism includes a protective shell, and the outer walls on both sides of the protective shell are provided with a plurality of strip grooves distributed at equal distances, the protective shell is installed on the top outer wall of the lifting seat, and a second driving motor is installed on the other end of the bottom inner wall of the protective shell, the two ends of the top outer wall of the lifting seat are rotatably connected with a sub-gear and a main gear through bearings, and the top outer walls of the two first one-way threaded rods are fixedly connected to the bottom outer walls of the sub-gear and the main gear, respectively, the top outer wall of the lifting seat is provided with a toothed belt, and the sub-gear and the main gear are both meshed with the toothed belt, one end of the output shaft of the second driving motor is fixedly connected to the top outer wall of the main gear, and the second driving motor is electrically connected to the battery and the control panel.

[0010] Preferably, a plurality of circular grooves distributed at equal distances are formed on the inner wall at the bottom of the notch, and fill-in lights are installed in each of the circular grooves, and the fill-in lights are electrically connected to the battery and the control panel.

[0011] Preferably, a sliding groove is opened on the top outer wall of the main block, a sliding rod is fixedly connected between the inner walls at both ends of the sliding groove, and a moving block is slidably sleeved on one end of the circumferential outer wall of the sliding rod, a vertical plate is provided on one side of the moving block, a handle is installed on the outer wall of one side of the vertical plate, and a cleaning cotton block is installed on the outer wall of the other side of the vertical plate.

[0012] Preferably, a second one-way threaded rod is fixedly connected to an outer wall of one side of the moving block, a hole groove is opened at the top of an outer wall of one side of the vertical plate, the second one-way threaded rod is inserted into the hole groove, and a locking block is connected to one side of the circumferential outer wall of the second one-way threaded rod through a threaded rotation sleeve.

[0013] Preferably, a slot is opened on the inner wall of one end of the notch, an adsorption plate is installed in the slot, and the adsorption plate is made of a magnet; an insert block is fixedly connected to the outer wall of one end of the display board, the insert block is inserted in the slot, the insert block is made of iron, and the outer wall of one end of the insert block fits with the outer wall of the other end of the adsorption plate.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] In the utility model, the content displayed on the display board can be observed through the tempered glass. Through the main block and the side block, the displayed promotional film script or poster and other documents are in an all-round wrapped state, which is conducive to protecting them. By starting the first drive motor, the circular plate can be driven to rotate, and then through the action of the lifting seat and the lifting block, the main block can be driven to rotate, so that the direction of the documents displayed on the display board can be changed, which is convenient for application in more usage scenarios. At the same time, changing the direction of the display board does not require changing the direction of the entire device, which is convenient for use and helps reduce the workload of the staff.

[0016] In the utility model, by starting the second driving motor, the two first one-way threaded rods can be driven to rotate, so that the lifting block can drive the lifting of the main block to be more stable, so that the height of the display board and the documents on the display board can be adjusted, which is convenient for application in more scenes. The tempered glass on the main block can be cleaned by the provided sliding rod, moving block, vertical plate, handle and cleaning cotton block. The vertical plate can be easily disassembled by the provided locking block, the second one-way threaded rod and the hole groove, so that the staff can clean or replace the cleaning cotton block on the vertical plate.

[0017] In the utility model, the provided adsorption plate and the insert block can play the role of adsorption and fixing when the display board is reset and installed in the notch, which is helpful to prevent the display board from falling out of the notch. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a schematic diagram of the overall structure of a display device for promotional films.

[0019] Figure 2 The present invention is a schematic diagram of the lifting block structure of a display device for promotional films.

[0020] Figure 3 The figure is a schematic diagram of the main gear structure of a display device for a promotional film.

[0021] Figure 4 The present invention is a schematic diagram of the cross-sectional structure of a lifting seat of a display device for a promotional film.

[0022] Figure 5 The present invention is a schematic diagram of the second one-way threaded rod structure of a display device for promotional films.

[0023] Figure 6 The present invention is a schematic diagram of the fill light structure of a display device for a promotional film.

[0024] Figure 7 The present invention is a schematic diagram of the structure of a limiting plate of a display device for promotional films.

[0025] Figure 8 The present invention is a schematic diagram of the second one-way threaded rod structure of a display device for promotional films.

[0026] Fig. 9 This is a schematic diagram of the cleaning cotton block structure of a display device for a promotional film.

[0027] Fig.10 The present invention is a schematic diagram of a strip slot structure of a display device for promotional films.

[0028] In the figure: 1. base; 2. round plate; 3. lifting seat; 4. control panel; 5. main block; 6. tempered glass; 7. side block; 8. moving block; 9. locking block; 10. vertical plate; 11. side groove; 12. first drive motor; 13. battery; 14. lifting block; 15. protective shell; 16. toothed belt; 17. secondary gear; 18. slide bar; 19. main gear; 20. first one-way threaded rod; 21. notch; 22. second one-way threaded rod; 23. fill light; 24. adsorption plate; 25. display board; 26. limit plate; 27. horizontal block; 28. plug-in block; 29. ​​rotating block; 30. third one-way threaded rod; 31. cleaning cotton block; 32. second drive motor; 33. strip groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example 1

[0031] See also Figure 1-Figure 10In the embodiment of the utility model, a display device for a promotional film comprises a base 1 and universal wheels installed on the four corners of the bottom outer wall of the base 1, a main block 5 is arranged on the top outer wall of the base 1, a notch 21 is opened on the outer wall at the other end of the main block 5, a display board 25 is inserted in the notch 21, a side block 7 is fixedly connected to the outer wall at the other end of the display board 25, and a groove is opened on the outer wall on one side of the side block 7, a tempered glass 6 is installed on the outer wall on one side of the main block 5, a clamping mechanism for fixing the display content is arranged on one side of the display board 25, a circular plate 2 is rotatably connected to the top outer wall of the base 1 through a bearing, a lifting seat 3 is fixedly connected to the top outer wall of the circular plate 2, a battery 13 is installed on the other side of the top outer wall of the circular plate 2, and a groove is opened between the inner walls at both ends of the lifting seat 3. The side groove 11 and the top inner wall of the vertical groove are rotatably connected with the first one-way threaded rod 20 through bearings, and the top of the circumferential outer wall of the first one-way threaded rod 20 is rotatably sleeved with a lifting block 14 through a thread, and one side outer wall of the lifting block 14 is fixedly connected to the other side outer wall of the main block 5. The top of the lifting seat 3 is provided with a driving mechanism for rotating the two first one-way threaded rods 20, and the bottom outer wall of the base 1 is installed with a first driving motor 12, and one end of the output shaft of the first driving motor 12 is fixedly connected to the bottom outer wall of the circular plate 2. A control panel 4 is installed at the bottom of one side outer wall of the main block 5, and the first driving motor 12 is electrically connected to the battery 13 and the control panel 4. When it is necessary to use this device to perform operations on files such as promotional film scripts or posters, When displaying, the staff moves the device as a whole to the position where it needs to be displayed, then fixes the four universal wheels, pulls the pull slot, and pulls the display board 25 out of the slot 21 through the side block 7. The staff places the files such as the promotional film script or poster to be displayed on the display board 25, and then uses the clamping mechanism to fix and limit the files such as the promotional film script or poster, and then resets the display board 25 to the slot 21. The content displayed on the display board 25 can be observed through the tempered glass 6. Through the main block 5 and the side block 7, the files such as the promotional film script or poster displayed are in an all-round wrapped state, which is conducive to protecting them. The staff controls the control panel 4 to start the driving machine The structure is that by starting the driving mechanism, the two first one-way threaded rods 20 are driven to rotate, and then the lifting block 14 and the main block 5 can be driven to move, so that the display board 25 and the height of the documents displayed on the display board 25 can be adjusted, which is convenient for application in various different usage scenarios and is convenient for use. At the same time, by starting the driving mechanism until the main block 5 moves to the lowest position, it is convenient for the staff to store and take out the documents placed on the display board 25 from the main block 5. The staff controls the control panel 4 to start the first driving motor 12. By starting the first driving motor 12, the circular plate 2 can be driven to rotate, and then the lifting seat 3 and the lifting block 14 can drive the main block 5 to rotate, so that the direction of the documents displayed on the display board 25 can be changed.Changing the orientation is conducive to more people viewing the contents of the file on the display board 25, and is convenient for applying to more usage scenarios. At the same time, changing the orientation of the display board 25 does not require changing the orientation of the entire device, which is conducive to use and helps reduce the workload of staff.

[0032] The clamping mechanism includes two transverse blocks 27, which are respectively fixedly connected to the two ends of the outer wall of one side of the display board 25. The outer walls of the opposite ends of the two transverse blocks 27 are each provided with a transverse groove. A third one-way threaded rod 30 is rotatably connected between the inner wall of one side of the transverse groove and the outer wall of one side of the display board 25 through a bearing, and the circumferential outer wall of the third one-way threaded rod 30 is rotatably sleeved on the limit plate 26 through a thread. A rotating block 29 is provided on the outer wall of one side of the two transverse blocks 27, and the outer wall of the other side of the rotating block 29 is fixedly connected to the outer wall of one side of the third one-way threaded rod 30. When it is needed When using the clamping mechanism, the staff rotates the two rotating blocks 29 to drive the two third one-way threaded rods 30 to rotate, and then the limiting plates 26 on the third one-way threaded rods 30 can be driven to move. The staff rotates the two rotating blocks 29 until the distance between the two limiting plates 26 and the display board 25 is the maximum, and then the staff places the document to be displayed between the limiting plates 26 and the display board 25. The staff then rotates the two rotating blocks 29 until the other two limiting plates 26 are in contact with the document, so that the document can be fixed and limited to prevent the document from falling during display.

[0033] The driving mechanism includes a protective shell 15, and the outer walls on both sides of the protective shell 15 are provided with a plurality of strip grooves 33 distributed at equal distances. The protective shell 15 is installed on the top outer wall of the lifting seat 3, and the other end of the bottom inner wall of the protective shell 15 is installed with a second driving motor 32. The two ends of the top outer wall of the lifting seat 3 are rotatably connected with a sub-gear 17 and a main gear 19 through bearings, and the top outer walls of the two first one-way threaded rods 20 are respectively fixedly connected to the bottom outer walls of the sub-gear 17 and the main gear 19, and the top outer wall of the lifting seat 3 is provided with a toothed belt 16, and the sub-gear 17 and the main gear 19 are both meshed with the toothed belt 16. One end of the output shaft of the second driving motor 32 is fixedly connected to the main gear 19. It is connected to the top outer wall of the main gear 19, and the second drive motor 32 is electrically connected to the battery 13 and the control panel 4. When the drive mechanism needs to be used, the staff controls the control panel 4 to start the second drive motor 32. The start of the second drive motor 32 drives the main gear 19 to rotate, and then through the action of the toothed belt 16, the auxiliary gear 17 rotates. Through the rotation of the main gear 19 and the auxiliary gear 17, the two first unidirectional threaded rods 20 can be driven to rotate, and then the lifting block 14 can drive the lifting of the main block 5 to be more stable, so that the height of the display board 25 and the documents on the display board 25 can be adjusted, which is convenient for application in more scenarios.

[0034] Among them, the bottom inner wall of the slot 21 is provided with a plurality of circular grooves distributed at equal distances, and fill lights 23 are installed in the circular grooves, and the fill lights 23 are electrically connected to the battery 13 and the control panel 4. When displaying, the staff controls the control panel 4 to start the plurality of fill lights 23, which can play the role of fill light and brighten the documents displayed on the display board 25, so as to facilitate the observation of the documents on the display board 25 clearly.

[0035] Among them, a slide groove is opened on the top outer wall of the main block 5, and a slide rod 18 is fixedly connected between the inner walls at both ends of the slide groove, and a moving block 8 is slidably sleeved on one end of the circumferential outer wall of the slide rod 18, and a vertical plate 10 is arranged on one side of the moving block 8, and a handle is installed on the outer wall of one side of the vertical plate 10, and a cleaning cotton block 31 is installed on the outer wall of the other side of the vertical plate 10. The tempered glass 6 on the main block 5 can be cleaned by the set slide rod 18, moving block 8, vertical plate 10, handle and cleaning cotton block 31, which is convenient for use. When there is dust and dirt on the tempered glass 6, the staff pulls the handle, and the slide rod 18 and the moving block 8 can drive the vertical plate 10 and the cleaning cotton block 31 to move. By moving the cleaning cotton block 31, the dust and dirt on the tempered glass 6 can be cleaned and wiped.

[0036] Among them, a second one-way threaded rod 22 is fixedly connected to the outer wall of one side of the moving block 8, a hole groove is opened at the top of the outer wall of one side of the vertical plate 10, the second one-way threaded rod 22 is inserted into the hole groove, and a locking block 9 is sleeved on one side of the circumferential outer wall of the second one-way threaded rod 22 through threaded rotation. The vertical plate 10 can be easily disassembled by setting the locking block 9, the second one-way threaded rod 22 and the hole groove, and then it is convenient for the staff to clean or replace the cleaning cotton block 31 on the vertical plate 10. When disassembly is required, the staff can remove the vertical plate 10 by rotating the locking block 9 until it falls off the second one-way threaded rod 22, and then the cleaning cotton block 31 can be cleaned or replaced.

[0037] The working principle of the utility model is as follows: when it is necessary to use the device to display files such as promotional film scripts or posters, the staff moves the device as a whole to the position where it needs to be displayed, and then fixes the four universal wheels, and the staff pulls the pull slot to pull the display board 25 out of the slot 21 through the side block 7, and the staff places the files such as the promotional film scripts or posters to be displayed on the display board 25, and then the staff rotates the two rotating blocks 29 until the other two limiting plates 26 are in contact with the files, so that the files such as the promotional film scripts or posters can be fixed and limited, and then the staff resets the display board 25 to the slot 21, and the content displayed on the display board 25 can be observed through the tempered glass 6, and the staff controls the control panel 4 to start multiple fill lights 23, so as to fill light and brighten the files displayed on the display board 25, and the staff controls the control panel 4 to start the second drive motor 32, and the second drive motor 32 is started to drive the two first unidirectional threaded rods 20 to rotate, and then The lifting block 14 and the main block 5 can be driven to move, so that the height of the display board 25 and the documents displayed on the display board 25 can be adjusted. At the same time, by starting the second drive motor 32 until the main block 5 moves to the lowest position, it is convenient for the staff to store and take out the documents placed on the display board 25 from the main block 5. The staff controls the control panel 4 to start the first drive motor 12. By starting the first drive motor 12, the circular plate 2 can be driven to rotate. Then, through the action of the lifting seat 3 and the lifting block 14, the main block 5 can be driven to rotate, so that the direction of the documents displayed on the display board 25 can be changed. By pulling the handle by the staff, the vertical plate 10 and the cleaning cotton block 31 can be driven to move through the sliding rod 18 and the moving block 8. By moving the cleaning cotton block 31, the dust and dirt on the tempered glass 6 can be cleaned and wiped. By rotating the locking block 9 until it falls off from the second unidirectional threaded rod 22, the vertical plate 10 can be removed, and then the cleaning cotton block 31 can be cleaned or replaced.

[0038] Example 2

[0039] See also Figure 6 and Figure 7 , which is different from Example 1, a slot is opened on the inner wall of one end of the notch 21, and an adsorption plate 24 is installed in the slot, and the adsorption plate 24 is made of a magnet, and an outer wall of one end of the display board 25 is fixedly connected to an insertion block 28, which is inserted into the slot, and the insertion block 28 is made of iron, and the outer wall of one end of the insertion block 28 is in contact with the outer wall of the other end of the adsorption plate 24. By setting the adsorption plate 24 and the insertion block 28, when the display board 25 is reset and installed in the notch 21, it can play the role of adsorption and fixing, which is beneficial to prevent the display board 25 from falling out of the notch 21.

[0040] The working principle of the utility model is: when the display board 25 is reset and installed in the slot 21, the staff takes the display board 25 and inserts it into the slot 21. When it is inserted to the bottom, the plug block 28 will be inserted into the slot and fit with the adsorption plate 24. Through the action of the adsorption plate 24, the plug block 28 can be adsorbed to fix the position of the display board 25.

[0041] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention.

Claims

1. A display device for promotional films, comprising a base (1) and universal wheels mounted on four corners of the bottom outer wall of the base (1), characterized in that: The top outer wall of the base (1) is provided with a main block (5), the other end outer wall of the main block (5) is provided with a notch (21), a display board (25) is inserted into the notch (21), the other end outer wall of the display board (25) is fixedly connected to a side block (7), and one side outer wall of the side block (7) is provided with a groove, one side outer wall of the main block (5) is provided with a tempered glass (6), one side of the display board (25) is provided with a clamping mechanism for fixing the display content, the top outer wall of the base (1) is rotatably connected to a circular plate (2) via a bearing, the top outer wall of the circular plate (2) is fixedly connected to a lifting seat (3), the other side of the top outer wall of the circular plate (2) is provided with a storage battery (13), and side grooves (11) are provided between the inner walls at both ends of the lifting seat (3), and the vertical grooves are provided at the ends of the vertical grooves. A first one-way threaded rod (20) is rotatably connected between the top inner wall and the bottom inner wall via a bearing, a lifting block (14) is rotatably sleeved on the top of the circumferential outer wall of the first one-way threaded rod (20) via a thread, and one side outer wall of the lifting block (14) is fixedly connected to the other side outer wall of the main block (5), a driving mechanism for rotating the two first one-way threaded rods (20) is arranged at the top of the lifting seat (3), a first driving motor (12) is installed on the bottom outer wall of the base (1), and one end of the output shaft of the first driving motor (12) is fixedly connected to the bottom outer wall of the circular plate (2), a control panel (4) is installed on the bottom of one side outer wall of the main block (5), and the first driving motor (12) is electrically connected to the battery (13) and the control panel (4).

2. A display device for promotional films according to claim 1, characterized in that: The clamping mechanism comprises two transverse blocks (27), the two transverse blocks (27) are respectively fixedly connected to two ends of an outer wall of one side of the display board (25), and the outer walls of the two transverse blocks (27) at opposite ends are each provided with a transverse groove, and a third one-way threaded rod (30) is rotatably connected between an inner wall of one side of the transverse groove and an outer wall of one side of the display board (25) via a bearing, and the circumferential outer wall of the third one-way threaded rod (30) is rotatably sleeved on a limit plate (26) via a thread, and a rotating block (29) is provided on an outer wall of one side of the two transverse blocks (27), and the outer wall of the other side of the rotating block (29) is fixedly connected to an outer wall of one side of the third one-way threaded rod (30).

3. A display device for promotional films according to any one of claims 1-2, characterized in that: The driving mechanism comprises a protective shell (15), the outer walls on both sides of the protective shell (15) are provided with a plurality of strip grooves (33) distributed at equal distances, the protective shell (15) is mounted on the top outer wall of the lifting seat (3), and a second driving motor (32) is mounted on the other end of the bottom inner wall of the protective shell (15), the two ends of the top outer wall of the lifting seat (3) are rotatably connected to a sub-gear (17) and a main gear (19) through bearings, and the top outer walls of the two first one-way threaded rods (20) are respectively fixedly connected to the bottom outer walls of the sub-gear (17) and the main gear (19), the top outer wall of the lifting seat (3) is provided with a toothed belt (16), and the sub-gear (17) and the main gear (19) are both meshed with the toothed belt (16), one end of the output shaft of the second driving motor (32) is fixedly connected to the top outer wall of the main gear (19), and the second driving motor (32) is electrically connected to the battery (13) and the control panel (4).

4. A display device for promotional films according to claim 3, characterized in that: The bottom inner wall of the notch (21) is provided with a plurality of circular grooves distributed at equal distances, each of which is equipped with a fill light (23), and each of the fill lights (23) is electrically connected to the battery (13) and the control panel (4).

5. A display device for promotional films according to claim 4, characterized in that: A sliding groove is formed on the top outer wall of the main block (5), a sliding rod (18) is fixedly connected between the inner walls at both ends of the sliding groove, and a moving block (8) is slidably sleeved on one end of the circumferential outer wall of the sliding rod (18), a vertical plate (10) is provided on one side of the moving block (8), a handle is installed on the outer wall of one side of the vertical plate (10), and a cleaning cotton block (31) is installed on the outer wall of the other side of the vertical plate (10).

6. A display device for promotional films according to claim 5, characterized in that: A second one-way threaded rod (22) is fixedly connected to an outer wall of one side of the moving block (8); a hole groove is opened at the top of an outer wall of one side of the vertical plate (10); the second one-way threaded rod (22) is inserted into the hole groove; and a locking block (9) is sleeved on one side of the circumferential outer wall of the second one-way threaded rod (22) through threaded rotation.

7. The display device for promotional films according to claim 1, characterized in that: A slot is formed on the inner wall of one end of the notch (21), in which an adsorption plate (24) is installed, and the adsorption plate (24) is made of a magnet; an insert block (28) is fixedly connected to the outer wall of one end of the display board (25), and the insert block (28) is inserted into the slot, and the insert block (28) is made of iron, and the outer wall of one end of the insert block (28) is in contact with the outer wall of the other end of the adsorption plate (24).

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