Telescopic display board for exhibition

Abstract

The invention relates to the technical field of exhibition appliances, in particular to a telescopic exhibition board for exhibition, which comprises an outer box board and an inner board, and through the telescopic matching design of the inner board and the outer box board, the flexibility and portability of exhibition are remarkably improved. The inner plate can extend outwards or contract inwards under the support of the lifting bracket, so that the display area of the display board can be flexibly adjusted according to actual requirements. When more content needs to be displayed, the inner plate can extend outwards, and the display area is increased; and when the space needs to be saved, the inner plate can be completely stored in the outer box plate, so that the occupied space is reduced. The design is particularly suitable for scientific and technological consultation service companies to frequently participate in different exhibitions and activities, the portability and flexibility of the display board can be remarkably improved, and the trouble of carrying and storage is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of exhibition tools, in particular to a telescopic exhibition board for exhibition. Background Art

[0002] Display boards are a common display tool, especially in technology consulting service companies. They have multiple uses and can effectively convey information, attract attention and enhance brand image.

[0003] However, existing display boards have certain defects during use. The size of existing display boards is fixed, and the size of the display area cannot be flexibly adjusted according to actual needs. This fixed design causes the display boards to appear insufficient when more content needs to be displayed, and to occupy too much space when space needs to be saved. Existing display boards usually only use a single panel as a display area, and cannot fully utilize the display space of the internal and external structures. This design limits the diversity of display content and the possibility of creative design. Existing display boards lack a fixing mechanism and are easily damaged by external force or human touch. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a retractable display board for exhibition.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a telescopic display board for exhibition, comprising an outer box board and an inner board, the outer box board is hollow inside and has an opening on the top, the outer box board is hinged with an outward-turning upper cover on the top, and the outward-turning upper cover is provided. When the inner board is retracted, the upper cover will automatically fall down and form a closed space with the outer box board to prevent dust, dirt, etc. from entering the interior of the display board and protect the surface cleanliness of the inner board. During transportation, this closed design can prevent the inner board from being damaged by external force or collision, thereby ensuring the integrity of the display board. When the inner board rises upward, the upper cover will be directly pushed open without manual opening, and the operation is simple and the automation is high. The outer box board is lifted and lowered with a lifting bracket, the inner board moves horizontally and is matched on the top of the lifting bracket, and the inner board is telescopically matched in the outer box board through the lifting bracket. Both the inner board and the outer box board can be used as display parts, providing more display space and creative design possibilities. The outer box board can be used to display fixed content such as company profile and service scope, while the inner board can be used to display dynamic content or key promotion projects. By flexibly adjusting the position of the inner panel, you can ensure that the display content is always at the best viewing angle, attracting more audience attention. The telescopic function of the inner panel allows the display area size of the display board to be flexibly adjusted according to actual needs. When more content needs to be displayed, the inner panel can be extended outward to increase the display area; when space needs to be saved, the inner panel can be retracted inward to reduce the occupied space. The inner panel is telescopically fitted in the outer box board through a lifting bracket, so that the inner panel can be completely stored in the outer box board when not in use, greatly reducing the occupied space. Two lifting legs are fixedly installed on the bottom of the outer box board. By setting the lifting legs, the display board can be optimized according to the audience's line of sight, ensuring that the display content is always at the best viewing angle; Among them, a fixing plate is horizontally fixed near the bottom of the outer box plate, and two screw rods are rotatably engaged with the top of the fixing plate. Two nuts are embedded through the lifting bracket, and the two nuts are respectively engaged with the two screw rod threads.

[0006] Preferably, a lifting drive motor for driving one of the screws to rotate is vertically installed at the bottom of the fixed plate, and a synchronous belt for synchronously driving the two screws is matched at the bottom of the fixed plate. The telescopic display board for exhibition can realize the lifting and lowering adjustment of the inner plate through the cooperation of the screw and the synchronous belt. The lifting drive motor drives one of the screws to rotate, and drives the other screw to rotate synchronously through the synchronous belt, thereby realizing the smooth lifting and lowering of the inner plate.

[0007] Preferably, two lifting frames are vertically fixed to the inner wall of one side of the outer box plate, and the two lifting frames are respectively located at the two ends of the lifting bracket. Lifting slide rails are vertically welded to the sides of the two lifting frames, and sliders are welded to the two ends of the lifting bracket close to the lifting frame. The two sliders are slidably fitted on the two lifting slide rails respectively.

[0008] Preferably, a slide groove is horizontally opened on one side of the top of the lifting bracket, and a slide bar is horizontally fixed on the bottom of the inner panel. The cross-sections of the slide bar and the slide groove are both in an inverted "T"-shaped structure. The slide bar at the bottom of the inner panel cooperates with the slide groove at the top of the lifting bracket to ensure that the inner panel always remains flat during the lifting process. In addition, the cooperation between the transmission belt and the friction strip further enhances the stability of the inner panel, preventing the display panel from shaking or tilting during the display process.

[0009] Preferably, the top of the lifting bracket is horizontally driven with a transmission belt, and a transmission drive motor for driving the transmission belt is vertically installed at the bottom of the lifting bracket. A friction strip is horizontally arranged on the side of the bottom of the lifting bracket close to the transmission belt, and the friction strip is frictionally matched with the transmission belt. The transmission drive motor is installed at the bottom of the lifting bracket, and the power is transmitted to the friction strip by driving the transmission belt to rotate. The friction strip is horizontally arranged on the side of the bottom of the lifting bracket close to the transmission belt, and is frictionally matched with the transmission belt. When the transmission belt rotates, the friction force drives the friction strip to move horizontally. When the friction strip moves horizontally, the friction force acts on the slide bar at the bottom of the inner plate, driving the inner plate to slide horizontally in the slide groove. The frictional match between the transmission belt and the friction strip allows the inner plate to move flexibly in the horizontal direction as needed. The inverted "T"-shaped structure of the slide bar and the slide groove ensures the stability of the inner plate.

[0010] Preferably, a baffle is fixed on the side of the top of the lifting bracket away from the lifting bracket, a mounting plate is fixed on the bottom of the lifting bracket, a clamping electric cylinder is horizontally fixed on one side of the mounting plate, a first push rod is provided at one end of the clamping electric cylinder, a guide plate is provided at the end of the first push rod away from the clamping electric cylinder, the guide plate is an inverted "L"-shaped structure, a pressing plate is fixed at the end of the guide plate away from the first push rod, the pressing plate is located on the side of the inner plate away from the baffle, the baffle arranged on the top of the lifting bracket and the clamping electric cylinder at the bottom can firmly fix the inner plate on the lifting bracket. The clamping electric cylinder presses the pressing plate on the inner plate through the first push rod and the guide plate to ensure that the display board will not loosen or shift during use.

[0011] Preferably, the lifting legs include a supporting tube and a lifting tube, both of which are square hollow tube structures. The lifting tube is telescopically fitted in the supporting tube, and the lifting tube is located in the upper half of the supporting tube. A supporting seat is fixed on the top of the lifting tube, and the supporting seat is fixedly supported on the bottom of the outer box plate.

[0012] Preferably, a bottom plate is horizontally fixed to the bottom of the support tube, and a plurality of anti-skid pads are fixed to the bottom of the bottom plate. The bottom plate and the anti-skid pads at the bottom of the support tube provide stable support to ensure that the display board remains stable under different ground conditions.

[0013] Preferably, a lifting electric cylinder is vertically fixed in the supporting cylinder, a second push rod is provided on the top of the lifting electric cylinder, a push plate is connected to the top of the second push rod, the push plate is fixed in the lifting cylinder, the lifting leg is composed of the supporting cylinder and the lifting cylinder, and the lifting cylinder is extended and retracted by the lifting electric cylinder.

[0014] Beneficial effects of the present invention: (1) In the present invention, the telescopic display board for exhibition significantly improves the flexibility and portability of the display through the telescopic cooperation design of the inner panel and the outer box panel. The inner panel can extend outward or retract inward under the support of the lifting bracket, so that the display area of ​​the display board can be flexibly adjusted according to actual needs. When more content needs to be displayed, the inner panel can be extended outward to increase the display area; when space needs to be saved, the inner panel can be completely stored in the outer box panel to reduce the occupied space. This design is particularly suitable for technology consulting service companies that frequently participate in different exhibitions and activities. It can significantly improve the portability and flexibility of the display board and reduce the trouble of handling and storage.

[0015] (2) In the present invention, both the inner and outer panels of the retractable exhibition display board can be used as display parts, providing more display space and creative design possibilities. The outer panel can be used to display fixed content such as company profile and service scope, while the inner panel can be used to display dynamic content or key promotion projects.

[0016] (3) In the present invention, the telescopic exhibition board is adapted to the friction between the transmission belt and the friction strip, so that the inner board can be flexibly moved in the horizontal direction as needed. The inverted "T"-shaped structure of the slide bar and the slide groove ensures the stability of the inner board and prevents the exhibition board from shaking or tilting during the exhibition. This design can ensure the clarity and aesthetics of the display content, and is particularly suitable for displaying high-quality graphic materials or product introductions. By flexibly adjusting the position of the inner board, the technology consulting service company can quickly adjust the position of the inner board according to the size and layout requirements of the exhibition content, ensuring that the center of the display content is always at the best viewing angle, thereby improving the display effect and audience experience.

[0017] (4) In the present invention, the telescopic display board for exhibition ensures the stability and safety of the inner board during the display process through the cooperation of the clamping electric cylinder and the transmission belt. The clamping electric cylinder presses the pressing plate onto the inner board through the first push rod and the guide plate to ensure that the display board will not loosen or shift during use. This design is particularly suitable for technology consulting service companies to use when displaying important information at exhibitions, and can effectively prevent the display board from being damaged by external force or human touch. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the outer box plate of the present invention after removing the upper cover.

[0021] Figure 3It is a schematic diagram of the internal structure of the outer box plate of the present invention.

[0022] Figure 4 for Figure 3 A magnified detail of area A.

[0023] Figure 5 It is a schematic diagram of the matching structure of the clamping electric cylinder and the pressure plate of the present invention.

[0024] Figure 6 It is a schematic diagram of the inner plate structure of the present invention.

[0025] Figure 7 It is a schematic diagram of the lifting leg structure of the present invention.

[0026] Figure 8 It is a schematic diagram of the internal structure of the support cylinder and the lifting cylinder of the present invention.

[0027] In the figure: 1. outer box plate; 101. upper cover; 2. lifting frame; 201. lifting slide rail; 3. fixing plate; 301. screw rod; 302. synchronous belt; 303. lifting drive motor; 4. lifting bracket; 401. slider; 402. transmission belt; 403. transmission drive motor; 404. mounting plate; 405. clamping cylinder; 406. first push rod; 407. guide plate; 408. pressure plate; 409. baffle; 410. slide groove; 5. inner plate; 501. slide bar; 502. friction strip; 6. lifting leg; 601. support cylinder; 602. lifting cylinder; 603. support seat; 604. bottom plate; 605. anti-skid pad; 606. lifting cylinder; 607. second push rod; 608. push plate. DETAILED DESCRIPTION

[0028] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0029] like Figure 1-Figure 8As shown, the telescopic display board for exhibition described in the present invention comprises an outer box board 1 and an inner board 5. The outer box board 1 is hollow inside and has an opening on the top. An outward-turning upper cover 101 is hinged on the top of the outer box board 1. When the inner board 5 is retracted, the upper cover 101 will automatically fall down and form a closed space with the outer box board 1 to prevent dust, dirt, etc. from entering the interior of the display board and protect the surface of the inner board 5 from being clean. During transportation, this closed design can prevent the inner board 5 from being damaged by external force or collision, thereby ensuring the integrity of the display board. The inner board 5 is turned to When it rises, the upper cover 101 will be directly opened without manual opening. It is easy to operate and has a high degree of automation. The lifting bracket 4 is matched with the lifting bracket 4 inside the outer box board 1. The inner plate 5 moves horizontally and matches the top of the lifting bracket 4. The inner plate 5 is telescopically matched in the outer box board 1 through the lifting bracket 4. Both the inner plate 5 and the outer box board 1 can be used as display parts, providing more display space and creative design possibilities. The outer box board 1 can be used to display fixed content such as company profile and service scope, while the inner plate 5 can be used to display dynamic content or key promotion projects. By flexibly adjusting the position of the inner plate 5, it can be ensured that the display content is always at the best viewing angle to attract more audience attention. The telescopic function of the inner plate 5 allows the display area size of the exhibition board to be flexibly adjusted according to actual needs. When more content needs to be displayed, the inner plate 5 can be extended outward to increase the display area; when space needs to be saved, the inner plate 5 can be retracted inward to reduce the occupied space. The inner panel 5 is telescopically fitted in the outer box panel 1 through the lifting bracket 4, so that the inner panel 5 can be completely stored in the outer box panel 1 when not in use, greatly reducing the occupied space. This design is particularly suitable for technology consulting service companies that need to frequently participate in different exhibitions and activities. It can improve the portability and flexibility of the display board, thereby significantly improving work efficiency and reducing the trouble of handling and storage. Two lifting legs 6 are fixedly installed on the bottom of the outer box panel 1. By setting the lifting legs 6, the display board can be optimized according to the audience's line of sight to ensure that the display content is always at the best viewing angle. This design can attract more audience attention and enhance the display effect; Among them, a fixing plate 3 is horizontally fixed near the bottom of the outer box plate 1, and two screw rods 301 are rotatably engaged at the top of the fixing plate 3. Two nuts are embedded through the lifting bracket 4, and the two nuts are respectively threadedly engaged with the two screw rods 301.

[0030] In an optional implementation of this embodiment, a lifting drive motor 303 for driving one of the screw rods 301 to rotate is vertically installed at the bottom of the fixed plate 3, and a synchronous belt 302 for synchronously driving the two screw rods 301 is provided at the bottom of the fixed plate 3. The telescopic exhibition board for exhibition can realize the lifting and lowering adjustment of the inner plate 5 through the cooperation of the screw rod 301 and the synchronous belt 302. The lifting drive motor 303 drives one of the screw rods 301 to rotate, and drives the other screw rod 301 to rotate synchronously through the synchronous belt 302, so as to realize the smooth lifting and lowering of the inner plate 5. This design allows the exhibition board to be flexibly adjusted according to the height requirements of the exhibition venue, and is particularly suitable for technology consulting service companies when they need to display promotional materials of different sizes. In large exhibitions, the exhibition board can be raised to attract more audience attention; in small meetings, the height can be lowered to save space.

[0031] In an optional implementation of the present embodiment, two lifting frames 2 are vertically fixed to the inner wall of one side of the outer box plate 1, and the two lifting frames 2 are respectively located at the two ends of the lifting bracket 4. Lifting rails 201 are vertically welded to the sides of the two lifting frames 2, and sliders 401 are welded to the two ends of the lifting bracket 4 close to the lifting frame 2, and the two sliders 401 are respectively slidably fitted on the two lifting rails 201.

[0032] In an optional implementation of this embodiment, a slide groove 410 is horizontally opened on one side of the top of the lifting bracket 4, and a slide bar 501 is horizontally fixed to the bottom of the inner panel 5. The cross-sections of the slide bar 501 and the slide groove 410 are both in an inverted "T"-shaped structure. The slide bar 501 at the bottom of the inner panel 5 cooperates with the slide groove 410 at the top of the lifting bracket 4 to ensure that the inner panel 5 always remains flat during the lifting process. In addition, the cooperation between the transmission belt 402 and the friction strip 502 further enhances the stability of the inner panel 5, preventing the display panel from shaking or tilting during the display process. This design can ensure the clarity and aesthetics of the display content, and is particularly suitable for technology consulting service companies to display high-quality graphic materials or product introductions. In actual applications, one end of the slide 410 is in an open state. After the lifting bracket 4 is raised to the top of the outer box board 1, the slide bar 501 can be pulled out from the open end of the slide 410. Because the inner plate 5 is not fixed to the transmission belt 402, the inner plate 5 can be removed to achieve rapid replacement of the inner plate 5, making the maintenance of the display board more convenient and quick. At the same time, by replacing the inner plate 5, the display content can be quickly replaced, thereby increasing the speed of replacing the display content of the display board.

[0033] In an optional implementation of this embodiment, the top of the lifting bracket 4 is horizontally driven with a transmission belt 402, and a transmission drive motor 403 for driving the transmission belt 402 is vertically installed at the bottom of the lifting bracket 4. A friction strip 502 is horizontally arranged on the side of the bottom of the lifting bracket 4 close to the transmission belt 402, and the friction strip 502 is frictionally matched with the transmission belt 402. The transmission drive motor 403 is installed at the bottom of the lifting bracket 4, and transmits power to the friction strip 502 by driving the transmission belt 402 to rotate. The friction strip 502 is horizontally arranged on the side of the bottom of the lifting bracket 4 close to the transmission belt 402, and is frictionally matched with the transmission belt 402. When the transmission belt 402 rotates, the friction force drives the friction strip 502 to move horizontally. When the friction strip 502 moves horizontally, the friction force acts on the slide bar 501 at the bottom of the inner plate 5, driving the inner plate 5 to slide horizontally in the slide groove 410. The frictional match between the transmission belt 402 and the friction strip 502 allows the inner plate 5 to move flexibly in the horizontal direction as needed. The inverted "T"-shaped structure of the slide bar 501 and the slide groove 410 ensures the stability of the inner plate 5. In this way, the technology consulting service company can quickly adjust the position of the inner plate 5 according to the size and layout requirements of the exhibition content, ensuring that the center of the exhibition content is always at the best viewing angle. The main function of the friction strip 502 is to increase the friction between the inner plate 5 and the transmission belt 402. The specific implementation method is not unique, such as: the friction strip 502 uses a magnetic strip, and the transmission belt 402 is also bonded with a magnetic strip; the friction strip 502 uses a rubber strip with a rough surface and a relatively large friction with the surface of the transmission belt 402; the friction strip 502 uses a cloth strip with hooks like Velcro. All of the above are possible, as long as the transmission of the transmission belt 402 can drive the inner plate 5 to move horizontally through the friction strip 502. In actual applications, in order to better move the inner plate 5, the slide bar 501 can be optionally replaced with a roller.

[0034] In an optional implementation of this embodiment, a baffle 409 is fixed on the side of the top of the lifting bracket 4 away from the lifting bracket 2, a mounting plate 404 is fixed on the bottom of the lifting bracket 4, a clamping electric cylinder 405 is horizontally fixed on one side of the mounting plate 404, a first push rod 406 is provided at one end of the clamping electric cylinder 405, a guide plate 407 is provided at the end of the first push rod 406 away from the clamping electric cylinder 405, the guide plate 407 is an inverted "L"-shaped structure, a pressing plate 408 is fixed at the end of the guide plate 407 away from the first push rod 406, and the pressing plate 408 is located on the side of the inner plate 5 away from the baffle 409. The baffle 409 provided on the top of the lifting bracket 4 and the clamping electric cylinder 405 at the bottom can firmly fix the inner plate 5 on the lifting bracket 4. The clamping electric cylinder 405 presses the pressing plate 408 on the inner plate 5 through the first push rod 406 and the guide plate 407 to ensure that the display board will not loosen or shift during use. This design is particularly suitable for technology consulting service companies to use when displaying important information at exhibitions, and can effectively prevent the display boards from being damaged by external forces or human touch.

[0035] In an optional implementation of the present embodiment, the lifting leg 6 includes a supporting tube 601 and a lifting tube 602. Both the supporting tube 601 and the lifting tube 602 are square hollow tube structures. The lifting tube 602 is telescopically fitted in the supporting tube 601, and the lifting tube 602 is located in the upper half of the supporting tube 601. A supporting seat 603 is fixed on the top of the lifting tube 602, and the supporting seat 603 is fixedly supported on the bottom of the outer box plate 1.

[0036] In an optional implementation of this embodiment, a bottom plate 604 is horizontally fixed at the bottom of the support tube 601, and a plurality of anti-skid pads 605 are fixed at the bottom of the bottom plate 604. The bottom plate 604 and the anti-skid pads 605 at the bottom of the support tube 601 provide stable support to ensure that the display board remains stable under different ground conditions. This design can effectively prevent the display board from tilting or shaking due to uneven ground or external force, thereby improving the display effect and safety.

[0037] In an optional implementation of this embodiment, a lifting electric cylinder 606 is vertically fixed in the support cylinder 601, a second push rod 607 is provided on the top of the lifting electric cylinder 606, a push plate 608 is connected to the top of the second push rod 607, and the push plate 608 is fixed in the lifting cylinder 602. The lifting leg 6 is composed of the support cylinder 601 and the lifting cylinder 602, and the lifting cylinder 602 is driven by the lifting electric cylinder 606 to extend and retract. This design allows the display board to be flexibly adjusted according to the height requirements of different venues.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A telescopic display panel for exhibition, comprising an outer box panel (1) and an inner panel (5), characterized in that: The outer box plate (1) is hollow inside and has an opening at the top. The outer box plate (1) is hinged with an outward-turned upper cover (101) at the top. A lifting bracket (4) is provided inside the outer box plate (1) for lifting and lowering. The inner plate (5) is horizontally movable and is fitted on the top of the lifting bracket (4). The inner plate (5) is telescopically fitted in the outer box plate (1) through the lifting bracket (4). Two lifting legs (6) are fixedly installed at the bottom of the outer box plate (1); A fixing plate (3) is horizontally fixed near the bottom of the outer box plate (1), and two screw rods (301) are rotatably engaged at the top of the fixing plate (3). Two nuts are embedded through the lifting bracket (4), and the two nuts are respectively threadedly engaged with the two screw rods (301).

2. The retractable display board for exhibition according to claim 1, characterized in that: A lifting drive motor (303) for driving one of the screw rods (301) to rotate is vertically installed at the bottom of the fixed plate (3), and a synchronous belt (302) for synchronously driving the two screw rods (301) is matched with the transmission at the bottom of the fixed plate (3).

3. The telescopic display board for exhibition according to claim 1, characterized in that: Two lifting frames (2) are vertically fixed to the inner wall of one side of the outer box plate (1), and the two lifting frames (2) are respectively located at two ends of the lifting bracket (4). Lifting slide rails (201) are vertically welded to the sides of the two lifting frames (2), and sliding blocks (401) are welded to the two ends of the lifting bracket (4) close to the lifting frame (2), and the two sliding blocks (401) are respectively slidably matched on the two lifting slide rails (201).

4. The retractable display board for exhibition according to claim 1, characterized in that: A slide groove (410) is horizontally provided on one side of the top of the lifting bracket (4), and a slide bar (501) is horizontally fixed on the bottom of the inner plate (5), and the cross sections of the slide bar (501) and the slide groove (410) are both in an inverted "T"-shaped structure.

5. The retractable display board for exhibition according to claim 4, characterized in that: The top of the lifting bracket (4) is horizontally driven with a transmission belt (402), the bottom of the lifting bracket (4) is vertically installed with a transmission drive motor (403) for driving the transmission belt (402), and a friction strip (502) is horizontally arranged on one side of the bottom of the lifting bracket (4) close to the transmission belt (402), and the friction strip (502) is frictionally matched with the transmission belt (402).

6. The retractable display board for exhibition according to claim 1, characterized in that: A baffle (409) is fixed to the top of the lifting bracket (4) at a side away from the lifting bracket (2), a mounting plate (404) is fixed to the bottom of the lifting bracket (4), a clamping electric cylinder (405) is horizontally fixed to one side of the mounting plate (404), a first push rod (406) is provided at one end of the clamping electric cylinder (405), a guide plate (407) is provided at the end of the first push rod (406) away from the clamping electric cylinder (405), the guide plate (407) is in an overturned "L"-shaped structure, a pressing plate (408) is fixed to the end of the guide plate (407) away from the first push rod (406), and the pressing plate (408) is located on the side of the inner plate (5) away from the baffle (409).

7. The telescopic display board for exhibition according to claim 1, characterized in that: The lifting leg (6) comprises a supporting tube (601) and a lifting tube (602). Both the supporting tube (601) and the lifting tube (602) are square hollow tube structures. The lifting tube (602) is telescopically fitted in the supporting tube (601), and the lifting tube (602) is located in the upper half of the supporting tube (601). A supporting seat (603) is fixed on the top of the lifting tube (602), and the supporting seat (603) is fixedly supported on the bottom of the outer box plate (1).

8. The telescopic display board for exhibition according to claim 7, characterized in that: A bottom plate (604) is horizontally fixed to the bottom of the support tube (601), and a plurality of anti-skid pads (605) are fixed to the bottom of the bottom plate (604).

9. The telescopic display board for exhibition according to claim 7, characterized in that: A lifting electric cylinder (606) is vertically fixed in the support cylinder (601), a second push rod (607) is provided on the top of the lifting electric cylinder (606), a push plate (608) is connected to the top of the second push rod (607), and the push plate (608) is fixed in the lifting cylinder (602).

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