Advertisement display device with multiple pictures arbitrarily replaceable

Abstract

The application discloses an advertisement display device capable of changing multiple pictures at will, which comprises a display frame, a roller and a plurality of displayable canvases. The roller is arranged on the display frame and can rotate along a first direction or a second direction relative to the display frame. The canvases are detachably fixed on the roller and sequentially arranged along the side wall of the roller. The end of the canvas away from the roller is the terminal end. When the roller rotates along the first direction, the plurality of canvases are rolled up, and the terminal end of each canvas can be selectively rolled over the highest end of the roller. When the canvas to be displayed is about to roll over the highest end of the roller, the roller stops rotating along the first direction and starts rotating along the second direction. At this time, the plurality of canvases are laid down, and the canvas to be displayed is just located at the front position for display. Thus, the advertisement display device can display multiple different scenes, has low manufacturing cost, small installation thickness and is suitable for window advertisement, large-area wall advertisement, training ground background and the like.

Description

Technical Field

[0001] This invention relates to the field of advertising display device technology, and more particularly to an advertising display device that allows for the arbitrary switching of multiple screens. Background Technology

[0002] Advertising light boxes generally refer to advertising carriers made of materials such as vacuum forming, acrylic, and inkjet cloth, and using a box-type hollow structure. Due to their waterproof and light-emitting characteristics, they are widely used for indoor and outdoor advertising.

[0003] With the continuous advancement of technology, advertising light boxes have evolved from traditional light boxes with fixed backdrops to light boxes with interchangeable backdrops, resulting in a wider range of applications.

[0004] Existing interchangeable-scene lightboxes primarily employ the following technology: two electrically driven rotating shafts (either vertically or horizontally) and a storage container of lightbox fabric containing different scenes. Rotating the shafts up and down displays different scenes on the fabric. However, due to limitations in lightbox size, the number of scenes that can be displayed on the fabric is limited, resulting in a limited number of advertisements that can be projected, making it difficult to display three or more.

[0005] Furthermore, the width of this type of lightbox is generally difficult to increase, limiting its application. This is because increasing the width of the lightbox necessitates increasing the length of the rotating shaft. To ensure the strength and rigidity of the shaft, allowing it to move the lightbox fabric for scene changes, the shaft diameter needs to be increased. Consequently, at the same rotation angle, the distance the lightbox fabric rotates will be greater, affecting the precision of controlling its rotation.

[0006] Therefore, when a large advertising lightbox with a large height and width is required, such as a width greater than 10 meters and a height greater than 5 meters, and more than 4 scene images need to be stored, the above-mentioned advertising lightbox structure cannot be used. Only advertising lightboxes with electronic LED screens can be used.

[0007] However, large-scale LED screens are difficult to popularize and widely apply due to their high cost. Furthermore, LED screens, with their low resolution and large installation thickness, are not suitable for close-range, high-definition advertising displays in indoor spaces.

[0008] Therefore, how to improve the technical defects existing in the prior art has always been a problem that ordinary people skilled in the art need to solve. Summary of the Invention

[0009] The purpose of this invention is to provide an advertising display device that allows for the arbitrary replacement of multiple screens, enabling the projection of multiple different scenes with high image clarity, low production cost, and small installation thickness. It can be widely used in places where the content of the scene needs to be changed, such as shop window advertising, large-area indoor wall advertising, and training ground backgrounds.

[0010] The technical solution provided by this invention is as follows:

[0011] An advertising display device with multiple screens that can be arbitrarily changed includes:

[0012] Display frame, rollers, and several canvases that can be displayed;

[0013] The roller is disposed on the display frame and can rotate relative to the display frame in a first direction or a second direction; and

[0014] The canvas is detachably fixed to the roller, and several canvases are arranged sequentially along the side wall of the roller;

[0015] The end of the canvas furthest from the roller is the end point;

[0016] When the roller rotates in the first direction, several canvases are rolled up, and the end of each canvas can be selectively flipped over the highest point of the roller; when the roller changes from rotating in the first direction to rotating in the second direction, several canvases are lowered, and the canvas whose end is closest to the highest point of the roller before being lowered is the canvas that is displayed after being lowered.

[0017] In some embodiments, the display frame is provided with a separator below the roller to separate any one of the canvases from the others.

[0018] In some embodiments, a housing is provided below the partition, having a first side and a second side disposed opposite to each other;

[0019] The roller rotates in a first direction to move the end of the canvas to be displayed past the divider. Before the end of the canvas to be displayed passes the highest point of the roller, the roller changes from rotating in the first direction to rotating in a second direction, so that the canvas to be displayed is separated to the side of the first side of the box by the dividing action of the divider, and the remaining canvases that do not need to be displayed are separated to the side of the second side of the box by the dividing action of the divider.

[0020] In some embodiments, the divider is a rectangular sheet with one end of the divider away from the housing inclined toward a first side of the housing.

[0021] In some embodiments, the first side of the box is provided with a plurality of adsorption points, which are configured to extract the gas between the box and the canvas located on the side where the first side of the box is located, so that the canvas being displayed is flatter.

[0022] and / or

[0023] The box is equipped with several light tubes, and the first side of the box is translucent, providing backlighting for the canvas being displayed.

[0024] In some embodiments, the roller includes a cylinder, a rotating shaft passing through the cylinder, and a driving member drivenly connected to the rotating shaft;

[0025] The side wall of the cylinder is provided with several evenly spaced mounting interfaces for fixing the canvas.

[0026] Driven by the driving component, the rotating shaft drives the cylinder to rotate synchronously, thereby causing the cylinder to roll up or unroll several of the canvases.

[0027] In some embodiments, a plurality of support members are provided between the rotating shaft and the inner side wall of the cylinder to improve the structural strength of the roller.

[0028] In some embodiments, a counterweight is provided at the end of the canvas.

[0029] In some implementations, the advertising display device that can arbitrarily change multiple screens also includes a control component;

[0030] The control element is used to control the operation and rotation direction of the roller; and the control element is used to control the brightness of the housing.

[0031] In some embodiments, each canvas has an identification mark at its end, and the identification mark of any one canvas is different from the identification marks of the other canvases; and

[0032] A first sensor is provided on the second side of the housing near the top of the housing to identify the identification mark on the canvas that has just crossed the highest point of the roller, and to transmit the identified information to the control unit.

[0033] The control unit is pre-programmed with a control program that determines the information of the next canvas to be flipped over the highest point of the roller based on the information of the latest canvas that has been flipped over the highest point of the roller, thereby controlling the rotation direction of the roller.

[0034] When the canvas about to be flipped over the highest point of the roller is the canvas to be displayed, the control unit controls the roller to change from rotating in the first direction to rotating in the second direction, so as to put down the canvas about to be flipped over the highest point of the roller for display.

[0035] In some embodiments, each of the canvases has a positioning point at its end; and

[0036] A second sensor is provided on the first side of the housing near the bottom of the housing to identify the positioning points on the canvas and transmit the identified information to the control unit;

[0037] The control unit has a preset control program that determines whether the canvas is in position based on the information identified by the second sensor, so as to control the roller to stop rotating in the second direction or continue rotating in the second direction.

[0038] The technical effects of this invention are as follows:

[0039] 1. In this patent, only a roller, a display frame for fixing the roller, and several canvases placed on the roller are required to achieve flexible switching of multiple scenes, so that the advertising display device can display multiple different scenes. It has low production cost and small installation thickness, and can be widely used in places that need to change the content of the scene, such as shop window advertising, large-area indoor wall advertising, and training ground background. It is highly practical.

[0040] 2. In this patent, by setting up a separator and a box, the canvas to be displayed is separated to the side where the first side of the box is located; the remaining canvases are separated to the side where the second side of the box is located. Since there is only one canvas located on the side where the first side of the box is located, there will be no situation where multiple canvases are stacked, causing the image of the canvas displayed at the front to become unclear due to the influence of multiple canvases after backlighting. This results in higher clarity and better display effect of the image displayed by the advertising display device.

[0041] 3. In this patent, the first side of the box is provided with several adsorption points, which are configured to draw air out between the box and the canvas to be displayed, allowing the canvas to be adsorbed onto the box, making the canvas flatter and improving the display effect. Furthermore, the box contains several light tubes, and the first side of the box is translucent, making it easier to attract the attention of passersby and improving the advertising effect. At the same time, the light emitted by the light tubes can also serve as illumination at night, making it highly practical.

[0042] 4. In this patent, a counterweight is added to the end of the canvas to increase the downward force of the canvas. On the one hand, this ensures that the canvas is flatter and does not wobble during display, resulting in a better display effect; on the other hand, when the end of the canvas away from the roller is rolled past the highest point of the roller, the counterweight will cause the canvas to fall downward on its own, placing it on the side where the second side of the box is located, which is conducive to the rapid switching of canvases.

[0043] 5. In this patent, by setting identification marks and positioning points on the canvas and setting corresponding first and second sensors on the display frame, the advertising display device can achieve automatic canvas switching, and its practical performance is greatly improved. Attached Figure Description

[0044] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0045] Figure 1 This is a three-dimensional structural diagram of the advertising display device with multiple screens that can be arbitrarily changed, provided by the present invention, in one state.

[0046] Figure 2 This is a three-dimensional structural diagram of the advertising display device with multiple screens that can be arbitrarily changed, provided by the present invention, in another state.

[0047] Figure 3 This is a three-dimensional structural diagram of the advertising display device with multiple screens that can be arbitrarily changed, provided by the present invention, in another state.

[0048] Explanation of icon numbers:

[0049] 100. Display frame; 110. Divider; 120. Box body; 121. Adsorption point; 130. First sensor; 140. Second sensor; 150. Base plate;

[0050] 200. Drum; 210. Mounting interface;

[0051] 300. Canvas; 310. Counterweight; 320. Identification label; 330. Positioning point;

[0052] 400. Control components;

[0053] 500, air pump;

[0054] a. First direction;

[0055] b. Second direction. Detailed Implementation

[0056] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0057] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0058] To keep the drawings concise, each figure only schematically shows the parts relevant to the invention, and these do not represent the actual structure of the product. Furthermore, to facilitate understanding, in some figures, only one of components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."

[0059] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0060] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0061] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of the invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.

[0062] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0063] According to a specific embodiment provided by the present invention, see [link to specific embodiment]. Figures 1 to 3 An advertising display device with multiple interchangeable images is disclosed, specifically comprising a display frame 100, a roller 200, and several displayable canvases 300. The roller 200 is disposed on the display frame 100 and can rotate relative to the display frame 100 along a first direction a or a second direction b. The canvases 300 are detachably fixed to the roller 200, and several canvases 300 are arranged sequentially along the side wall of the roller 200. The end of each canvas 300 furthest from the roller 200 is the end point.

[0064] Specifically, when the roller 200 rotates along the first direction a, several canvases 300 are rolled up, and the end of each canvas 300 can be selectively flipped over the highest point of the roller 200. When the canvas 300 to be displayed is about to flip over the highest point of the roller 200, the roller 200 stops rotating along the first direction a and starts rotating along the second direction b. At this time, several canvases 300 are lowered, and the canvas 300 whose end is closest to the highest point of the roller 200 before being lowered is the canvas 300 to be displayed after being lowered, and it is positioned at the forefront for display.

[0065] Ideally, each canvas 300 has a different pattern, so that different scenes can be switched by switching between different canvases 300.

[0066] In this embodiment, only a roller 200, a display frame 100 for fixing the roller 200, and several canvases 300 placed on the roller 200 are needed to achieve flexible switching of multiple scenes, allowing the advertising display device to project multiple different scenes. Compared with traditional scrolling advertising display devices, it can project more scenes with a larger area, making it suitable for advertising, photography background setting, training ground background setting, corporate culture decoration, and wall mural beautification projects in cafes, bakeries, beauty salons, and health centers. It is highly practical and has a wide range of applications. In addition, compared with advertising display devices with electronic LED screens, the advertising display device provided in this embodiment has higher image clarity, lower production cost, and smaller installation thickness, resulting in extremely high economic benefits and facilitating mass production and use.

[0067] Specifically, the display frame 100 includes two parallel columns to provide support points for the roller 200. Of course, in actual production, the display frame 100 can also be a hanger or a fastener fixedly connected to the roller 200 to fix the roller 200 to the wall. These are all within the scope of protection of this invention and will not be elaborated here.

[0068] See Figures 1 to 3 In one specific embodiment, a divider 110 is provided below the roller 200 to separate any canvas 300 from the other canvases 300.

[0069] Preferably, a housing 120 is provided below the divider 110, having a first side and a second side arranged opposite to each other. In this case, the divider 110 can separate any canvas 300 to the side where the first side of the housing 120 is located; and separate the remaining canvases 300 to the side where the second side of the housing 120 is located. At this point, the only canvas 300 located on the side where the first side of the housing 120 is located is the canvas 300 being displayed. That is, the roller 200 first rotates along the first direction a to drive the end of the canvas 300 to be displayed past the separator 110. Before the end of the canvas 300 to be displayed has crossed the highest point of the roller 200, the roller 200 is changed from rotating along the first direction a to rotating along the second direction b. This causes the canvas 300 to be displayed to be separated to the side of the first side of the box 120 by the separator 110, while the other canvases 300 that do not need to be displayed are separated to the side of the second side of the box 120 by the separator 110.

[0070] In this embodiment, since there is only one canvas 300 on the side where the first side of the housing 120 is located, there will be no situation where multiple canvases 300 are stacked, resulting in the image of the canvas 300 displayed at the front being unclear. This makes the image displayed by the advertising display device clearer and the display effect better.

[0071] Specifically, see Figures 1 to 3 In this embodiment, the rotation of the roller 200 along the first direction a means that the roller 200 rotates toward the side where the second side of the box 120 is located. Conversely, the rotation of the roller 200 along the second direction b means that the roller 200 rotates toward the side where the first side of the box 120 is located.

[0072] When the advertising display device needs to switch canvases 300, the roller 200 should first rotate along the first direction a to roll up the canvas 300 being displayed and other canvases 300. During the rotation of the roller 200, the end of the canvas 300 that was originally displayed will be rolled up to the top of the roller 200. At this time, if the roller 200 continues to rotate along the first direction a, the end of the canvas 300 that was rolled up to the top of the roller 200 will fall under the action of gravity, so that the canvas 300 is located on the side where the second side of the housing 120 is located. Conversely, the end of the next canvas 300 that is away from the roller 200 will pass over the separator 110 and be located on the side where the first side of the housing 120 is located.

[0073] If the next canvas 300 is the next canvas 300 to be displayed, then the roller 200 should be rotated from the first direction a to the second direction b to place the canvas 300 and the remaining canvases 300. If the next canvas 300 is not the next canvas 300 to be displayed, then the roller 200 should continue to rotate in the first direction a until the end of the correct canvas 300 passes the separator 110, and then the roller 200 should be rotated in the second direction b to place the correct canvas 300 and the remaining canvases 300.

[0074] In actual production, in addition to fixing the divider 110 to the display frame 100, the divider 110 can also be fixed to the top of the box 120 without affecting the dividing function of the divider 110 on the canvas 300. Users can flexibly choose a suitable fixing method according to the actual situation, without any restrictions, all of which are within the protection scope of this invention.

[0075] Specifically, the divider 110 has a rectangular sheet structure, and the end of the divider 110 away from the housing 120 is inclined towards the first side of the housing 120. Thus, when the roller 200 rotates along the first direction a and rolls the end of the canvas 300 to the divider 110, the end of the canvas 300 can pass over the divider 110 along the side of the divider 110 facing the first side, and be located on the side of the housing 120 where the first side is located. Conversely, when the canvas 300 that has passed over the divider 110 is the canvas 300 that needs to be displayed, the roller 200 changes its rotation from the first direction a to the second direction b. At this time, the canvas 300 that has just passed over the divider 110 will be blocked by the end of the divider 110 away from the housing 120, and due to its own gravity, the canvas 300 will only descend along the height direction of the housing 120 until it reaches the appropriate position.

[0076] In actual production, the separator 110 can be in the form of a rectangular sheet or other sheet shapes, as long as its end away from the housing 120 is inclined towards the first side of the housing 120. Alternatively, the separator 110 can be in the form of a block. In this case, the end of the separator 110 away from the housing 120, facing the second side of the housing 120, should have a guide surface to guide the end of the canvas 300 away from the roller 200 from the side where the second side of the housing 120 is located to the side where the first side of the housing 120 is located. Specifically, the guide surface can be an inclined surface, a convex arc surface, or a concave arc surface, etc., which will not be elaborated here, but are all within the scope of protection of this invention.

[0077] Preferably, see Figure 2 and Figure 3The first side of the housing 120 is provided with several adsorption points 121, which are configured to extract gas between the housing 120 and the canvas 300 located on the same side as the first side of the housing 120. In this way, the canvas 300 to be displayed can be adsorbed onto the housing 120, making the canvas 300 flatter and the display effect better.

[0078] Specifically, the box 120 is connected to an air pump 500. The user can use the air pump 500 to draw air from inside the box 120 and between the box 120 and the canvas 300 located on the first side of the box 120 to create negative pressure, so as to make the canvas 300 to be displayed adhere to the first side of the box 120 and make it flatter.

[0079] Furthermore, the cabinet 120 is equipped with several light tubes, and the first side of the cabinet 120 is translucent, providing backlighting for the canvas 300 being displayed, making it easier to attract the attention of passersby and achieving a good advertising effect. At the same time, the light emitted by the light tubes can also serve as illumination at night, making it highly practical.

[0080] Specifically, the first side of the light box 120 may be made of glass or a semi-transparent plastic resin material to allow light to pass through.

[0081] In a preferred embodiment, the first side of the lightbox 120 may also be composed of a light cover cloth to improve the softness of the light from the light tube, so that passersby are more comfortable with their eyes when viewing the scenery on the canvas 300 and will not feel glare.

[0082] In addition, simple landscape paintings can be drawn on the light cover cloth to prevent the display frame 100 from being exposed when the canvas 300 is switched, thus improving the overall aesthetics. Moreover, the landscape paintings on the light cover cloth can also attract the attention of passersby, especially when the advertising display device is advertising; advertisements displayed on an advertising display device with landscape paintings are more likely to be noticed, resulting in better advertising effectiveness. For details, see... Figure 1 The roller 200 includes a cylinder, a rotating shaft passing through the cylinder, and a driving component connected to the rotating shaft. The side wall of the cylinder has several evenly spaced mounting interfaces 210 for fixing the canvases 300. Driven by the driving component, the rotating shaft causes the cylinder to rotate synchronously, thereby causing the cylinder to roll up or unroll several canvases 300.

[0083] In this embodiment, the canvas 300 and the mounting interface 210 on the cylinder are detachably connected. This allows users to flexibly replace different canvases 300 according to actual needs, facilitating the long-term repeated use of the advertising display device. Preferably, each canvas 300 has a mounting connector at the end that connects to the roller 200, which mates with the mounting interface 210. This provides a more secure fixation and also facilitates the disassembly and replacement of the canvas 300, enhancing its practicality.

[0084] To improve the practicality of the advertising display device and better meet the requirements of different canvas 300 quantities, the number of mounting interfaces 210 can be increased in actual production. This way, regardless of the number of canvases 300 required by the user, there will be enough mounting interfaces 210 for installation. Conversely, if the user wants to reduce the number of canvases 300, they only need to select a portion of the mounting interfaces 210 for installation.

[0085] Furthermore, several support components are provided between the rotating shaft and the inner wall of the cylinder to improve the structural strength of the roller 200, so that the roller 200 can stably support and drive several canvases 300 to rotate, making it less prone to damage and improving the performance and lifespan of the advertising display device.

[0086] Furthermore, see Figures 1 to 3 A counterweight 310 is provided at the end of the canvas 300, which increases the downward force of the canvas 300. On the one hand, the counterweight 310 can ensure that the canvas 300 is flatter and does not wobble when displayed, resulting in a better display effect; on the other hand, when the end of the canvas 300 is rolled past the highest point by the roller 200, the counterweight 310 will cause the canvas 300 to fall downward on its own, so that it is located on the side where the second side of the box 120 is located, which is conducive to the rapid switching of the canvas 300.

[0087] Specifically, in this embodiment, the counterweight 310 is a rod with the same length as the width of the canvas 300, located at the end of the canvas 300 away from the roller 200, forming a heavy vertical edge.

[0088] In one specific embodiment, the advertising display device further includes a control unit 400, which can control the brightness of the cabinet 120. Specifically, during the day, the brightness of the cabinet 120 can be reduced or even turned off to save power; at night, the brightness of the cabinet 120 can be increased to provide illumination. Furthermore, the control unit 400 can also control the operation and rotation direction of the drive components, thereby controlling the operation and rotation direction of the roller 200.

[0089] Specifically, the control unit 400 can be a remote control with multiple function buttons to control the brightness of the cabinet 120, the start and stop of the roller 200, and the rotation direction of the roller 200.

[0090] Of course, the control unit 400 can also be an electrical control box with a preset control program to realize the automatic switching of the canvas 300 and the adjustment of the brightness of the cabinet 120.

[0091] Specifically, see Figures 1 to 3 Each canvas 300 has an identification mark 320 at its end, and the identification mark 320 of any canvas 300 is different from the identification marks 320 of the other canvases 300. At this time, a first sensor 130 is located on the second side of the housing 120 near the top of the housing 120 to identify the identification mark 320 on the canvas 300 and transmit the identified information to the control unit 400. The control unit 400 then controls the rotation direction of the roller 200 based on the information identified by the first sensor 130. Specifically, each canvas 300 has a different color mark or sensor chip at its end to form the aforementioned identification mark 320. When the end of the canvas 300 passes the highest point of the roller 200, it will fall to the side of the housing 120 under its own gravity. At this time, the identification mark 320 on the end of the canvas 300 falls exactly at the first sensor 130, making the identification mark 320 readable. Thus, the control unit 400 can determine whether the next canvas 300 is the canvas 300 to be displayed based on the identification number 320 identified by the first sensor 130. If not, the control unit 400 controls the roller 200 to continue rotating along the first direction a; if so, when the next canvas 300 passes the separator 110, the control unit 400 controls the roller 200 to stop rotating along the first direction a and instead rotate along the second direction b to place the canvas 300 to be displayed.

[0092] Further, see Figures 1 to 3 Each canvas 300 has a positioning point 330 at its end. A second sensor 140 is located on the first side of the housing 120 near the bottom of the housing 120 to identify the positioning point 330 on the canvas 300 and transmit the identified information to the control unit 400. The control unit 400 then determines whether the canvas 300 is in position based on the information identified by the second sensor 140, thereby controlling the roller 200 to stop rotating in the second direction or continue rotating in the second direction.

[0093] Specifically, each canvas 300 has a positioning chip at its end to form a positioning point 330. When the second sensor 140 does not detect the positioning point 330, the control unit 400 continues to control the roller 200 to rotate in the second direction b; when the second sensor 140 detects the positioning point 330, it means that the canvas 300 to be displayed has been completely lowered, and the control unit 400 controls the roller 200 to stop running.

[0094] In actual production, the bottom of the display frame 100 may also be provided with a base plate 150. The second sensor 140 is located on the base plate 150 and on the side where the first side of the box 120 is located. It can also identify the positioning point 330 on the canvas 300 so that the control component 400 can determine whether the canvas 300 is in place.

[0095] Of course, the second sensor 140 can also be set as a photosensitive sensor. In this case, there is no need to set the positioning point 330 on the canvas 300. As long as the canvas 300 descends to a certain position and blocks the photosensitive sensor, the control component 400 can receive the information that the canvas 300 has reached the position, thereby controlling the roller 200 to stop running.

[0096] At this time, the display time of each canvas 300 can be preset in the control unit 400. When the display time ends, the control unit 400 directly controls the roller 200 to rotate along the first direction a, so as to roll up the canvas 300 for switching.

[0097] It is worth noting that this embodiment only lists some feasible solutions. The specific settings can be flexibly set according to the actual situation, and there are no restrictions here. All of them are within the protection scope of this invention.

[0098] To further improve the automation level of the advertising display device, the air pump 500 can be electrically connected to the control unit 400. When the control unit 400 receives the information that the canvas 300 has arrived, it can not only control the roller 200 to stop running, but also control the air pump 500 to start running so that the canvas 300 to be displayed can be attracted to the box 120, thus ensuring the display effect of the canvas 300.

[0099] It is worth noting that when the display time of the canvas 300 is over, the control unit 400 should first control the air pump 500 to stop running, and then control the roller 200 to rotate in the first direction a.

[0100] Furthermore, a third sensor is installed on the housing 120, which can identify the ambient light level and transmit the information to the controller 400. The controller 400 then controls the brightness according to the required brightness by using different combinations of the number of lamps or by dimming.

[0101] Of course, in actual production, the control component 400 can be a combination of a remote control and an electrical control box, which enables the advertising display device to achieve automated adjustment and allows users to control various functions of the advertising display device according to their own needs, making it highly practical and intelligent. In the above embodiments, the descriptions of each embodiment have their own emphasis. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0102] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An advertising display device with multiple screens that can be arbitrarily changed, characterized in that, include: Display frame, rollers, and several canvases that can be displayed; The roller is disposed on the display frame and can rotate relative to the display frame in a first direction or a second direction; and The canvas is detachably fixed to the roller, and several canvases are arranged sequentially along the side wall of the roller; The display frame is provided with a separator below the roller to separate any one of the canvases from the others; Below the separator is a box with a first side and a second side arranged opposite to each other; The end of the canvas furthest from the roller is the end point; As the roller rotates in the first direction, several canvases are rolled up, and the end of each canvas can be selectively flipped over the highest end of the roller. When the end of the canvas to be displayed passes the separator but does not climb over the highest point of the roller, the roller changes from rotating in the first direction to rotating in the second direction. When the roller changes from rotating in the first direction to rotating in the second direction, several canvases are lowered, and the canvases to be displayed are separated to the side of the first side of the box by the separator, while the remaining canvases that do not need to be displayed are separated to the side of the second side of the box by the separator.

2. The advertising display device according to claim 1, characterized in that, The separator is a rectangular sheet structure, and the end of the separator away from the box body is inclined toward the first side of the box body.

3. The advertising display device according to claim 1 or 2, characterized in that, The first side of the box is provided with several adsorption points, which are configured to extract the gas between the box and the canvas located on the side of the first side of the box, so that the canvas being displayed is flatter. and / or The box is equipped with several light tubes, and the first side of the box is translucent, providing backlighting for the canvas being displayed.

4. The advertising display device according to claim 1 or 2, characterized in that, The roller includes a cylinder, a rotating shaft passing through the cylinder, and a driving component drivenly connected to the rotating shaft; The side wall of the cylinder is provided with several evenly spaced mounting interfaces for fixing the canvas. Driven by the driving component, the rotating shaft drives the cylinder to rotate synchronously, thereby causing the cylinder to roll up or unroll several of the canvases.

5. The advertising display device according to claim 4, characterized in that, Several support members are provided between the rotating shaft and the inner wall of the cylinder to improve the structural strength of the roller.

6. The advertising display device according to claim 1 or 2, characterized in that, The canvas has a counterweight at one end.

7. The advertising display device according to claim 3, characterized in that, It also includes control components; The control element is used to control the operation and rotation direction of the roller; and the control element is used to control the brightness of the housing.

8. The advertising display device according to claim 7, characterized in that, Each of the canvases has an identification number at its end, and the identification number of any one of the canvases is different from the identification numbers of the other canvases; and A first sensor is provided on the second side of the housing near the top of the housing to identify the identification mark on the canvas that has just crossed the highest point of the roller, and to transmit the identified information to the control unit. The control unit is pre-programmed with a control program that determines the information of the canvas to be flipped over the highest point of the roller next, based on the information of the canvas that has just been flipped over the highest point of the roller as identified by the first sensor, thereby controlling the rotation direction of the roller. When the canvas about to be flipped over the highest point of the roller is the canvas to be displayed, the control unit controls the roller to change from rotating in the first direction to rotating in the second direction, so as to put down the canvas about to be flipped over the highest point of the roller for display.

9. The advertising display device according to claim 7, characterized in that, Each of the canvases described herein has a positioning point at its end; and A second sensor is provided on the first side of the housing near the bottom of the housing to identify the positioning points on the canvas and transmit the identified information to the control unit; The control unit has a preset control program that determines whether the canvas is in position based on the information identified by the second sensor, so as to control the roller to stop rotating in the second direction or continue rotating in the second direction.

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