CN114596797A - Promotional poster display device - Google Patents

Abstract

The invention discloses a propaganda poster display device, comprising: a display stand; a pair of fixing blocks, which are adapted to be hingedly connected with a pair of longitudinal side end faces of the display stand one-to-one; It is fixedly connected with a pair of fixing blocks; through grooves are opened inside the two arms of the bracket; the inside of each through groove is provided with a screw rod with one end protruding out of the through slot; the end of the screw rod protruding out of the through slot A rotating disc is connected to the part; a sliding sleeve is also threadedly sleeved on the screw; the sliding sleeve is movably connected with a movable strut; and the movable strut is connected with the display stand through a connecting piece. The invention can adjust the inclination angle of the display stand according to the effect of adjusting the inclination angle of the display stand under different conditions of external light irradiation, and has high applicability.

Description

Promotional poster display device

technical field

The invention relates to the technical field of propaganda posters, in particular to a propaganda poster display device.

Background technique

Propaganda refers to the display of some information that needs to be widely communicated for people to watch and browse. The modern age is an information age, and the means of propaganda are also diversified. A display device is required when the poster is displayed.

In the prior art, the display devices that are used more often need to have the function of adjusting the height for different use states. The display devices are mostly placed in places with a large outdoor flow of people. In the outdoor use environment, the following situations are inevitable: That is to say, the angle of outdoor sunlight varies within a day. Therefore, for a fixed display device corresponding to sunlight with different irradiation angles, there may be a problem of glare due to reflection, which causes inconvenience in use.

In addition, the traditional one-sided display method makes the content displayed on the overall poster limited and has low practicability, especially cannot meet the needs of use in the case of displaying a lot of content.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a propaganda poster display device to solve the technical effect of improving its comprehensive use performance during use in an outdoor environment.

In order to achieve the above purpose, the present invention provides the following technical solutions: a movable propaganda poster display device, comprising:

display stand;

a pair of fixing blocks, which are adapted to be hingedly connected with a pair of longitudinal side end faces of the display stand in a one-to-one manner;

A bracket, the two arms of the bracket are fixedly connected with a pair of fixing blocks one-to-one; and through grooves are opened in the two arms of the bracket; the inside of each through slot is provided with one end protruding from the through slot There is a screw outside; the end of the screw extending out of the through groove is connected with a rotating disk; the screw is also threadedly sleeved with a sliding sleeve; the sliding sleeve is movably connected with a movable support rod; and the movable support rod It is connected to the display stand by means of connecting pieces.

In an optional embodiment of the present invention, a base is further provided below the bottom end of the bracket;

One side end of the base is fixedly connected with a handrail; and a pair of through holes are opened at intervals at the bottom of the base;

A lift assembly is arranged between the base and the bracket.

In an optional embodiment of the present invention, the lifting assembly includes a bidirectional screw rod provided inside the base, and a suitable A handle for driving the bidirectional screw rod to rotate, a pair of sliding sleeves sleeved on the bidirectional screw rod at intervals, and a pair of deformable rod groups respectively connected with the pair of sliding sleeves.

In an optional embodiment of the present invention, each of the deformable rod groups includes a fixed sleeve that is matched and connected to the sliding sleeve, and two support rods that are hingedly connected to both ends of the fixed sleeve respectively; wherein

one of the two struts is positioned above the two-way screw and the other is positioned below the two-way screw; and

One end of the support rod located above the two-way screw rod away from the fixed sleeve is hingedly connected with the bottom end of the bracket;

The ends of the support rods located under the bidirectional screw rods respectively included in each of the deformation rod groups and away from the fixed sleeve are hingedly connected to a sliding plate.

In an optional embodiment of the present invention, both ends of the inner wall of the base are provided with first chute slidably matched with both ends of the slide plate;

The two ends of the sliding plate are respectively matched with the first chute through a first sliding block; and

A pair of rollers are also arranged on the slide plate at intervals; and the pair of rollers are suitable for penetrating a pair of through holes one-to-one.

In an optional embodiment of the present invention, a servo motor is also fixedly connected to the outside of the display stand; and

The front hinge of the display stand is connected with a viewing window.

In an optional embodiment of the present invention, the output end of the servo motor is fixedly connected with a half gear, and an external gear of the half gear is meshed with a driven gear;

One end of the driven gear is movably connected inside the display stand, and the other end of the driven gear is fixedly connected with a shaft.

In an optional embodiment of the present invention, a third chute is provided inside the shaft;

A third sliding block is slidably connected to the inside of the third chute; and a second limiting groove is opened on the outside of the third sliding block; and

The inside of the shaft is threadedly connected with a hand-tightening bolt; the hand-tightening bolt extends to the inside of the third chute; the bottom end of the hand-tightening bolt is fixedly connected with a pressure block; one end of the third sliding block is fixedly connected There are connecting shafts.

In an optional embodiment of the present invention, the inner wall of the display stand is provided with three second chutes;

Two of the three second chutes are arranged opposite to each other, and the other second runner is arranged opposite to the third runner;

A second sliding block is slidably connected to the inside of the second chute; and the same connecting shaft is fixedly connected to the outside of the second sliding block;

Rollers are respectively provided between the connecting shafts corresponding to the two opposite second sliding grooves and between the connecting shafts corresponding to the opposite third sliding grooves and the second sliding grooves.

In an optional embodiment of the present invention, the two rollers are connected by a transmission belt.

Compared with the prior art, the beneficial effects of the present invention are:

1. In the present invention, the screw, the sliding sleeve, the rotating plate, the movable support rod, the connecting piece and the fixed block are arranged to cooperate with each other, and the rotating disk is manually rotated forward or reversely, and the corresponding synchronous rotation of the screw drives the sliding sleeve to push the movable support rod through and The connecting parts are driven to swing, so as to realize the purpose of rotating the display stand with the connection with the fixed block as the fulcrum, so as to achieve the effect that the display stand can adjust the inclination angle under different conditions of external light irradiation, and has high applicability.

2. The present invention cooperates with each other by setting a sliding sleeve, a support rod, a roller, a sliding plate, a first sliding block, a first chute, a handle, a fixed sleeve and a bracket, and manually rotates the handle in a forward or reverse direction, and the sliding sleeves face each other or in the opposite direction. It slides horizontally against each other and the corresponding transmission rod swings, so as to achieve the purpose of pushing the bracket and the slide plate through the corresponding lifting movement through the fixed sleeve, so as to achieve the effect of adjusting the height of the display stand and moving the rollers on the ground, which is convenient for adjustment and adjustment. Mobile, improve its functionality, simple and convenient operation.

3. In the present invention, the servo motor, the half gear, the driven gear and the conveyor belt are arranged to cooperate with each other, and the servo motor drives the half gear to rotate, so that the half gear intermittent gear drives the driven gear to rotate, and the rotation of the driven gear corresponds to the transmission of the conveyor belt and the roller. Synchronous transmission between the two, so as to achieve the purpose of transmission of the conveyor belt, so as to achieve the effect of switching the content after the content of the poster is resident, which plays the role of expanding the display area of the poster, changing the traditional fixing method of one side of the paper, solving the problem of The problem of the limitations of poster display, with fluidity, improve its viewing.

Description of drawings

1 is a perspective view of a promotional poster display device of the present invention;

Fig. 2 is the sectional view of the propaganda poster display device of the present invention;

3 is a side cross-sectional view of the connecting structure of the movable strut and the display stand of the publicity poster display device of the present invention;

4 is a side cross-sectional view of the connection structure of the half gear and the driven gear of the publicity poster display device of the present invention;

Fig. 5 is the front sectional view of the display stand of the propaganda poster display device of the present invention;

Fig. 6 is the enlarged view of A place in Fig. 5;

FIG. 7 is an enlarged view of B in FIG. 5 .

Labels in the figure: 1, base; 2, armrest; 3, bracket; 4, display stand; 5, viewing window; 6, through hole; 7, first chute; 8, first slider; 9, roller; 10 , connecting plate; 11, slide plate; 12, fixed sleeve; 13, strut; 14, handle; 15, two-way screw; 16, sliding sleeve; 17, fixed block; 18, through slot; 19, screw rod; 20, rotation Disc; 21, sliding sleeve; 22, connecting piece; 23, movable strut; 24, half gear; 25, driven gear; 26, roller; 27, conveyor belt; 28, servo motor; 29, sleeve rod; 30, No. Two chute; 31, second slider; 32, arm rod; 33, groove; 34, slide rod; 35, limit block; 36, first limit groove; 37, spring; 38, shoulder block; 39 40, the third chute; 41, the third slider; 42, the connecting shaft; 43, the pressure block; 44, the second limit groove; 45, the screw by hand.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example 1:

1-3, the present invention provides a propaganda poster display device, comprising: a base 1, an armrest 2 is fixedly connected to the outside of the base 1, and a pair of through holes 6 are formed at the bottom of the base 1 at intervals. A bidirectional screw rod 15 is movably connected inside the base 1 , and one end of the bidirectional screw rod 15 extends through and extends to the outside of the base 1 and is fixedly connected with a handle 14 . A pair of sliding sleeves 16 are also threadedly sleeved on the bidirectional screw rod 15 at intervals. A pair of sliding sleeves are respectively connected with a pair of deformation rod groups, that is, each sliding sleeve is matched with a pair of deformation rod groups.

Each deformable rod group includes a fixed sleeve 12 that is connected to the sliding sleeve 16 , and two struts 13 that are hingedly connected to both ends of the fixed sleeve 12 ; one of the two struts 13 is Located above the two-way screw 15, another support rod 13 is located below the two-way screw 15; and one end of the support rod 13 above the two-way screw 15 away from the fixed sleeve 12 is hingedly connected to the bottom end of the bracket 3; here It should be noted that the top end surface of the base 1 facing the bracket 3 is provided with an active area suitable for the support rod 13 to penetrate through and to accommodate the deformation of the deformation rod group. The ends of the support rods 13 located under the bidirectional screw rods 15 respectively included in each deformable rod group and away from the fixing sleeve 12 are hingedly connected to a sliding plate 11 . The two arms of the bracket are fixed one-to-one with a pair of fixing blocks 17 , and the pair of fixing blocks 17 are both movably connected with the display stand 4 .

Both ends of the inner wall of the base 1 are provided with first sliding grooves 7 slidably matched with both ends of the slide plate 11 . The two ends of the sliding plate 11 are respectively connected with the first chute 7 through a first sliding block 8; and the sliding plate 11 is also connected to a pair of rollers 9 through the connecting plate 10 at intervals; and the pair of rollers 9 is suitable for one-to-one connection Pass through a pair of through holes 6 .

Through the movement of the support rod 13, the corresponding lifting and lowering movement of the bracket 3 and the slide plate 11 can be pushed, so as to achieve the effect of adjusting the height of the display stand 4 and moving the roller 9 on the ground, which is convenient for adjustment and movement, improves its functionality, and is simple and convenient to operate. .

It should be noted that, for the roller 9 of this embodiment, it can be extended to the lower end of the base 1 to realize the movement of the whole propaganda poster display device, or it can be folded into the interior of the base 1, so that the The rollers 9 do not touch the ground. The significance of this kind of structure is that for the publicity poster display device used in the outdoor environment, the outdoor environment will inevitably encounter windy weather, so for the design and use of the outdoor poster display device, it is necessary to Consider its windproof performance, that is, ensure that it is stably supported on the ground under the influence of a certain wind, without tipping over. In this regard, it should be noted that, for an object with a vertical structure, the supporting effect formed by the support point provided on the bottom end surface of the object for the whole object is not as good as the supporting effect formed by the supporting surface. Specifically referring to the propaganda poster display device of this embodiment, the support effect for the overall structure achieved by contacting the ground with the two rollers 9 is not as good as the supporting effect formed by the entire bottom end surface of the base 1 contacting the ground. Therefore, when the propaganda poster display device of this embodiment is in response to windy weather, the rollers 9 can be retracted into the interior of the base 1, so that the entire bottom end surface of the base 1 can be in contact with the ground. To form a solid support for the overall publicity poster display device to improve its wind resistance.

For the specific angle adjustment of the display stand 4, it needs to be realized through the following structure: through slots 18 are opened in both arms of the bracket 3; There is a screw 19; the end of the screw 19 protruding out of the through slot 18 is connected with a rotating disk 20; the screw 19 is also threadedly sleeved with a sliding sleeve 21; It is said that the side walls of the two arms of the bracket 2 are respectively provided with a gap suitable for exposing the sliding sleeve 21, so that the sliding sleeve 21 can be connected with the movable support rod 23 through the above-mentioned gap when the sliding sleeve 21 moves up and down on the screw 19. ; And the movable strut 23 is connected with the display stand 4 through the connecting piece 22 . With this structure, the display stand 4 can be rotated through the connection with the fixed block 17 as a fulcrum, so as to achieve the effect that the display stand 4 can adjust the inclination angle under different conditions of external light irradiation, and has high applicability.

The specific working principle of the propaganda poster display device of the present embodiment is as follows:

When the height of the bracket 3 needs to be adjusted, the two-way screw 15 is driven to rotate synchronously by rotating the handle 14 in the forward or reverse direction. The two poles 13 at the upper end push the bracket 3 to perform vertical lifting movement, which is convenient for height adjustment for different environments, and the two poles 13 at the lower end push the slide plate 11 to move, wherein The sliding plate 11 realizes the vertical limit sliding in the first chute 7 through the first sliding blocks 8 at both ends, and drives the roller 9 to move up and down synchronously through the connecting plate 10. The hole 6 extends to the ground contact, and then the whole display table 4 can be moved by holding the handrail 2, so that the display table 4 is completely raised and has a wide field of vision in the moving state, which is convenient for the staff to move.

When it is necessary to adjust the angle of the display stand 4, manually rotate the forward or reverse rotation disk 20, the synchronous movement of the screw 19 makes the sliding sleeve 21 move up and down accordingly, and the sliding sleeve 21 pushes the movable support rod 23 through the connection with the connecting piece 22 accordingly. The movable support rod 23 uses the connection point between the fixed block 17 and the display stand 4 as the fulcrum to swing correspondingly until it reaches an appropriate angle, and adjusts the appropriate angle according to different light conditions to ensure its ornamental.

The propaganda poster display device of this embodiment specifically includes the following operating conditions during use:

S1: When the height of the bracket 3 needs to be adjusted, the two-way screw 15 is driven to rotate synchronously by turning the handle 14 in the forward or reverse direction. Correspondingly drives and swings, and the two support rods 13 at the upper end push the bracket 3 to carry out vertical lifting movement accordingly;

S2: The two struts 13 at the lower end push the sliding plate 11 to move accordingly, wherein the sliding plate 11 realizes the vertical limit sliding of the first sliding groove 7 through the first sliding blocks 8 at both ends, and drives the roller 9 through the connecting plate 10 Synchronous lifting movement, when the support rod 13 swings to a vertical state, the roller 9 extends through the through hole 6 to contact the ground, and then pushes the entire display stand 4 by holding the handrail 2;

S3: When it is necessary to adjust the angle of the display stand 4, manually rotate the forward or reverse rotation plate 20, the synchronous movement of the screw 19 makes the sliding sleeve 21 move up and down accordingly, and the sliding sleeve 21 correspondingly pushes the movable support rod 23 through the connecting piece. 22 to swing accordingly, wherein the movable strut 23 takes the connection point between the fixed block 17 and the display stand 4 as a fulcrum to swing accordingly until it reaches an appropriate angle.

Example 2:

Referring to FIGS. 4-7 , on the basis of the publicity poster display device of Embodiment 1, a servo motor is also fixedly connected to the outside of the display table of the publicity poster display device provided in this embodiment; and the front hinge of the display table is connected to a watch window.

More specifically, the output end of the servo motor 28 is fixedly connected with the half gear 24 , and the external gear of the half gear 24 is meshed with the driven gear 25 , and one end of the driven gear 25 is movably connected inside the display stand 4 . A shaft 39 is fixedly connected to the other end of the movable gear 25 , a third chute 40 is opened inside the shaft 39 , and a third sliding block 41 is slidably connected to the inside of the third sliding groove 40 , and the third sliding block 41 is slidably connected. A second limit groove 44 is opened on the outside, a hand-tightening bolt 45 is threadedly connected to the inside of the shaft rod 39, and the hand-tightening bolt 45 extends to the inside of the third chute 40, and the bottom end of the hand-tightening bolt 45 is fixedly connected with a pressure screw. Block 43, one end of the third sliding block 41 is fixedly connected with a connecting shaft 42.

Furthermore, the inner walls of the display stand 4 are respectively provided with second chutes 30, there are three places in total, two of the three second chutes 30 are arranged in pairs 30, and the other second chutes 30 are arranged in pairs with each other. The third chute 40 is oppositely arranged.

The second sliding block 31 is slidably connected to the inside of the second sliding slot 30 , and the same connecting shaft 42 is fixedly connected to the outside of the second sliding block 31 . Rollers 26 are respectively provided between the connecting shafts 42 corresponding to the third chute 40 and the second chute 30 .

Both ends of the connecting shafts 42 are movably sleeved with sleeve rods 29, and the bottom ends of the sleeve rods 29 are respectively movably sleeved with another set of connecting shafts 42. The front of the sleeve rods 29 is fixedly connected with arm rods 32. The outer surface between the rollers 26 is fitted with a conveyor belt 27 and is connected by transmission. A first limit groove 36 is formed on the outside of the sleeve rod 29, and grooves 33 are formed on both ends of the inner wall of the display stand 4, and the grooves The interior of 33 is slidably connected with a shoulder blade block 38, and the interior of the shoulder blade block 38 is fixedly connected with a sliding rod 34, the sliding rod 34 extends through and extends to the outside of the display stand 4, and a spring 37 is fixedly connected between the shoulder blade block 38 and the groove 33. , the end of the slide bar 34 is fixedly connected to the limit block 35, wherein the purpose of the transmission of the conveyor belt 27 is realized, so as to achieve the effect of switching the content after the content of the poster is resident, and play the role of expanding the display area of the poster, changing the traditional one The fixed way of one side of the paper solves the problem of the limitation of poster display, and it has fluidity and improves its viewing.

The specific working principle of the propaganda poster display device of the present embodiment is as follows:

Open the viewing window 5, manually turn the hand screw 45, the thread between the hand screw 45 and the shaft 39 moves vertically and telescopically to drive the pressure block 43 away from the second limit groove 44, and then manually pull the sliding rod 34, the shoulder blade block 38 Squeeze spring 37 telescopically slides in the horizontal direction in groove 33, sliding rod 34 drives limit block 35 away from first limit groove 36, and manually pulls arm rod 32 to drive connecting shaft 42 to move in translation. The horizontal sliding in the third chute 40 and the horizontal synchronous sliding of the second sliding block 31 in the second chute 30, so as to take out the drum 26 and the conveyor belt 27, and then stick the poster to be pasted on the surface of the conveyor belt 27 to play the role of It is convenient for the staff to update and replace the poster. The operation is simple and convenient. After pasting, reverse the previous steps to install it in the display stand 4, and then start the servo motor 28 to drive the half gear 24 to drive the driven gear. 25, make the driven gear 25 rotate intermittently, wherein the rotation of the driven gear 25 drives the conveyor belt 27 to rotate through the corresponding connecting shaft 42, so that the poster is intermittently driven to display different parts, so that the length and content of the poster have ductility, It has changed the traditional one-side fixed display, solved the limitation of less poster display content, has ductility and fluidity, and improves the viewing effect.

Specifically, the propaganda poster display device of this embodiment can perform the following operations during use:

Open the viewing window 5, manually turn the hand screw 45, the thread between the hand screw 45 and the shaft 39 moves vertically and telescopically to drive the pressure block 43 away from the second limit groove 44, and then manually pull the sliding rod 34, the shoulder blade block 38 The compression spring 37 is retracted and slid horizontally in the groove 33, and the sliding rod 34 drives the limit block 35 to escape from the first limit groove 36;

Manually pulling the arm rod 32 drives the connecting shaft 42 to move in translation. Take out the conveyor belt 27, and then paste the poster to be pasted on the surface of the conveyor belt 27;

After the pasting is completed, reverse the previous steps to install it in the display stand 4, and then start the servo motor 28 to drive the half gear 24 to drive the driven gear 25, so that the driven gear 25 rotates intermittently, wherein the driven gear 25 The rotation of the connecting shaft 42 drives the conveyor belt 27 to rotate accordingly, so that the poster can be displayed in different parts through intermittent transmission.

The above specific embodiments further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying what is indicated. A device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of the two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the product of the invention is usually placed in use, only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying The device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", "third", etc. are only used to differentiate the description and should not be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhanging" etc. do not imply that a component is required to be absolutely horizontal or overhang, but rather may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the present invention, unless otherwise expressly specified and limited, the first feature above or below the second feature may include the first and second features in direct contact, or may include the first and second features that are not in direct contact with each other. is through additional characteristic contact between them. Also, the first feature being above, above and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is below, below and below the second feature includes the first feature is directly below and diagonally below the second feature, or simply means that the first feature level is smaller than the second feature.

Claims (10)

1. A promotional poster display apparatus, comprising:

a display stand;

a pair of securing blocks adapted to be hingedly connected to a pair of longitudinal side end surfaces of the display stand, one to one;

the two arms of the bracket are fixedly connected with the pair of fixing blocks one by one; through grooves are formed in the two arms of the bracket; a screw rod with one end extending out of the through groove is arranged in each through groove; the end part of the screw rod extending out of the through groove is connected with a rotating disc; the screw is also sleeved with a sliding sleeve in a threaded manner; the sliding sleeve is movably connected with a movable support rod; and the movable support rod is connected with the display platform through a connecting piece.

2. A promotional poster display apparatus as claimed in claim 1 wherein a base is further provided below the bottom end of the support;

one side end of the base is fixedly connected with a handrail; a pair of through holes are formed at the bottom of the base at intervals;

and a lifting component is arranged between the base and the support.

3. A poster display apparatus as claimed in claim 2, wherein the lifting assembly comprises a two-way screw rod arranged inside the base, a handle arranged at the end of the two-way screw rod extending outside the base after penetrating through the side wall of the base and suitable for driving the two-way screw rod to rotate, a pair of sliding sleeves arranged on the two-way screw rod at intervals, and a pair of deformation rod sets respectively connected with the pair of sliding sleeves.

4. A promotional poster display apparatus according to claim 3 wherein each of said deformable rod sets comprises a retaining sleeve matingly connected to said sliding sleeve, and two struts hingedly connected to respective ends of said retaining sleeve; wherein

One of the two support rods is positioned above the bidirectional screw rod, and the other support rod is positioned below the bidirectional screw rod; and

one end of the support rod positioned above the bidirectional screw rod, which is far away from the fixed sleeve, is hinged with the bottom end part of the bracket;

each deformation rod group comprises a support rod positioned below the bidirectional screw rod and far away from one end of the fixed sleeve, and the support rod is hinged with a sliding plate.

5. A propaganda poster display device according to claim 4, wherein both ends of the inner wall of the base are provided with first sliding grooves which are in sliding fit with both ends of the sliding plate;

two ends of the sliding plate are respectively matched and connected with the first sliding chute through a first sliding block; and

the sliding plate is also provided with a pair of rollers at intervals; and the pair of rollers are suitable for penetrating the pair of through holes one by one.

6. A promotional poster display apparatus as claimed in claim 1 wherein a servo motor is also fixedly connected to the exterior of the display stand; and

the front side of the display stand is hinged with a viewing window.

7. A poster display apparatus as claimed in claim 6, wherein the output end of the servo motor is fixedly connected with a half gear, and the external gear of the half gear is engaged with a driven gear;

one end of the driven gear is movably connected inside the display stand, and the other end of the driven gear is fixedly connected with a shaft rod.

8. A promotional poster display apparatus as claimed in claim 7 wherein said shaft has a third chute formed therein;

a third sliding block is connected inside the third sliding groove in a sliding manner; a second limiting groove is formed in the outer portion of the third sliding block; and

the inner thread of the shaft lever is connected with a hand-screwed bolt; and the hand-screwed bolt extends to the inside of the third sliding chute; the bottom end of the hand-screwed bolt is fixedly connected with a pressing block; one end of the third sliding block is fixedly connected with a connecting shaft.

9. A promotional poster display apparatus as claimed in claim 1 wherein the inner wall of the display stand is provided with three second chutes;

two of the three second sliding chutes are arranged oppositely, and the other second sliding chute is arranged oppositely to the third sliding chute;

a second sliding block is connected inside the second sliding groove in a sliding manner; the same connecting shafts are fixedly connected to the outer parts of the second sliding blocks;

and rollers are respectively arranged between the connecting shafts corresponding to the two opposite second sliding grooves and between the connecting shafts corresponding to the opposite third sliding grooves and the second sliding grooves.

10. A promotional poster display according to claim 6 wherein the two rollers are in driving connection by a conveyor belt.

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