Display module structure and digital signage

Abstract

A display module structure (10) and a digital signage, the display module structure (10) comprising a back plate (1), the back plate (1) comprising a plate main body (11) and a mounting portion (12) connected to the plate main body (11), the mounting portion (12) comprising a bent plate body (123), a first plate body (121) and a second plate body (122) and defining a mounting cavity (124) having an opening (1241) on a side surface, the first plate body (121) being used for bearing a display panel (20); the backlight assembly (2) is arranged on one end face, facing the first plate body (121), of the second plate body (122), the backlight assembly (2) comprises an optical film (21), and a part, located in the mounting cavity (124), of the optical film (21) is provided with a mounting hole (211); the limiting component (3) penetrates through the first plate body (121) or the second plate body (122) to extend into the mounting cavity (124) and is inserted into the mounting hole (211), and a margin gap is formed between the outer wall face of the part, located in the mounting hole (211), of the limiting component (3) and the inner wall face of the mounting hole (211). When the optical film (21) expands to the periphery due to thermal expansion, the optical film (21) is restrained to expand in the space of the allowance gap under the action of the first inserting part (32) by utilizing the allowance gap, so that the risk of a film arching phenomenon is reduced.

Description

Display module structure and digital signage TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of display, and in particular, to a display module structure and a digital signage. BACKGROUND

[0002] With the rapid development of technology and the advent of the digital age, display products such as digital signage have been widely used in commercial display, information dissemination and other fields. These products have attracted a lot of attention due to their efficient information dissemination, dynamic visual effects and interactive experience. However, in actual application, display products such as digital signage often face various complex installation and use environments, among which the installation requirements such as hanging horizontally, hanging vertically, leaning forward and leaning backward are particularly prominent.

[0003] In display products such as digital signage, the display module structure is the main component, and the optical film of the display module structure as one of the key components directly affects the display effect and user experience of the equipment. However, the optical film will be affected by environmental factors such as temperature during use and will expand and contract with heat and cold. Especially in the installation state of horizontal and vertical hanging, leaning forward and leaning backward, there are more stringent specifications for the deformation of the optical film. The working of the display module structure makes the temperature of the optical film rise more easily, which is prone to cause the phenomenon of film arching, thereby affecting the display effect and stability of the digital signage. Therefore, it is important to improve the display module structure to reduce the influence of the deformation of the optical film.

[0004] SUMMARY

[0005] In order to solve the above technical problems, the embodiments of the present application provide a display module structure and a digital signage which can reduce the influence of the deformation of the optical film.

[0006] The embodiments of the present application solve the technical problems by adopting the following technical solutions:

[0007] A display module structure includes a back plate, a backlight assembly, and a limiting member. The back plate includes a plate body and a mounting portion connected to the plate body. The mounting portion includes a bent plate body, a first plate body, and a second plate body. The bent plate body, the first plate body, and the second plate body surround to form a mounting cavity with an opening on a side surface. The first plate body is used to carry a display panel. The backlight assembly is arranged on an end surface of the second plate body facing the first plate body. The backlight assembly includes an optical film. The optical film extends into the mounting cavity along the opening. A portion of the optical film in the mounting cavity is provided with a mounting hole. The limiting member extends into the mounting cavity through the first plate body or the second plate body and is inserted into the mounting hole. A portion of the limiting member in the mounting hole has a clearance gap with an inner wall surface of the mounting hole.

[0008] Optionally, the limiting member includes a connecting portion and a first plug-in portion connected to the connecting portion. The connecting portion is connected to the mounting portion. The mounting portion is provided with a first mounting hole. The first plug-in portion passes through the first mounting hole and is inserted into the mounting hole.

[0009] Optionally, along the first direction, the limiting member is arranged on a side of the second plate body away from the first plate body. The second plate body is provided with the first mounting hole. One surface of the connecting portion facing the second plate body is provided with an adhesive member. The connecting portion is bonded to the second plate body through the adhesive member.

[0010] Optionally, the limiting member further includes an extension portion. The extension portion is connected to one end of the connecting portion. The extension portion is configured to extend away from the second plate body along the first direction.

[0011] Optionally, the display module structure further includes an outer frame. The outer frame is provided with a cavity. The mounting portion is arranged in the cavity. Along the first direction, a distance between one end of the extension portion away from the connecting portion and an inner wall surface of the outer frame is less than a size of the first plug-in portion.

[0012] Optionally, the first plate body is provided with the first mounting hole. An inner wall surface of the first mounting hole has an internal thread. An outer surface of the connecting portion has an external thread. The connecting portion is threadedly connected to the first mounting hole.

[0013] Optionally, the limiting member further includes a nut portion. The nut portion is connected to one end of the connecting portion away from the first plug-in portion. Along a second direction, a cross-sectional area of the nut portion is greater than a cross-sectional area of the connecting portion. The nut portion abuts a surface of the first plate body. The second direction is perpendicular to the first direction.

[0014] Optionally, the limiting member is a screw, the connecting portion is a threaded rod segment having external threads on the screw, and the first insertion portion is a light rod segment of the screw.

[0015] Optionally, the connecting portion is connected to the first plate body, the first plate body is provided with the first mounting hole, the limiting member further comprises a second insertion portion connected to the connecting portion, the second insertion portion and the first insertion portion are respectively located at two ends of the connecting portion, the second insertion portion and the first insertion portion are both arranged at an angle with the connecting portion and both are relative to the connecting portion towards the same side, and the first plate body is provided with a mounting through hole, and the second insertion portion is arranged in the mounting through hole.

[0016] Optionally, the first insertion portion is an insertion plate, and the mounting hole is a long hole matched with the insertion plate.

[0017] Optionally, the display module structure further comprises a screwing piece, the first plate body is provided with a second mounting hole, an inner wall surface of the second mounting hole has internal threads, the connecting portion is provided with a third mounting hole, the screwing piece passes through the third mounting hole and is screwed with the second mounting hole, so that the limiting member is relatively fixed with the first plate body.

[0018] Optionally, the display module structure further comprises a first buffer piece, the first buffer piece is arranged at an end surface of the first plate body away from the second plate body, the first buffer piece is provided with a relief gap, the connecting portion is arranged in the relief gap, and the first buffer piece is used for bearing the display panel.

[0019] Optionally, the display module structure further comprises a second buffer piece, the second buffer piece is connected to a side of the first plate body towards the optical film sheet and is located between the optical film sheet and the first plate body.

[0020] Optionally, the number of the limiting members and the mounting holes are both multiple, the multiple limiting members are arranged at intervals in the mounting portion, and one limiting member is inserted in one mounting hole.

[0021] Optionally, the backlight assembly further comprises a reflective sheet and a diffusion plate, one end surface of the reflective sheet abuts against the back plate, the other end surface of the reflective sheet abuts against one end surface of the diffusion plate, and the other end surface of the diffusion plate abuts against the optical film sheet.

[0022] The technical problem of the embodiments of the present application is also solved by the following technical solutions.

[0023] A digital signage comprises a display module structure and a display panel, and the display panel is arranged on the first plate body of the display module structure.

[0024] The display module structure provided by the embodiments of the present application has the beneficial effects that the display module structure comprises a back plate, a backlight assembly and a limiting component, the back plate comprises a plate main body and a mounting portion connected with the plate main body, the mounting portion comprises a bent plate body, a first plate body and a second plate body, the bent plate body, the first plate body and the second plate body are arranged to form an installation cavity with an opening on a side surface, the first plate body and the second plate body are arranged at intervals along a first direction, and the first plate body is used for bearing a display panel; the backlight assembly is arranged on an end surface of the second plate body facing the first plate body, the backlight assembly comprises an optical film, and a part of the optical film located in the installation cavity is provided with a mounting hole; the limiting component penetrates through the first plate body or the second plate body to extend into the installation cavity and is inserted into the mounting hole, and there is a clearance between an outer wall surface of the part of the limiting component located in the mounting hole and an inner wall surface of the mounting hole. In this way, when the optical film expands outwardly due to heat, the optical film can be constrained to expand in the clearance under the action of the first plug-in portion by using the clearance between the mounting hole and the first plug-in portion, and the risk of the optical film appearing in an arch shape is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0025] One or more embodiments are illustrated by way of example in the figures that are part of this disclosure and which are illustrative, but not restrictive, of the present embodiments, wherein elements having the same reference numbers designate corresponding elements and in which:

[0026] Fig. 1 is a schematic view of a digital signage according to one of the embodiments of the present application;

[0027] Fig. 2 is an exploded view of the structure of Fig. 1;

[0028] Fig. 3 is a sectional view of a part of the structure of the display module;

[0029] Fig. 4 is a partial sectional view of the display module structure;

[0030] Fig. 5 is a schematic view of Fig. 1 after being cut along PP;

[0031] Fig. 6 is a sectional view of the display module structure according to one of the embodiments;

[0032] Fig. 7 is an exploded view of the display module structure in a partial sectional view;

[0033] Fig. 8 is a schematic view of Fig. 1 after being cut along PP according to another embodiment;

[0034] Fig. 9 is a sectional view of the display module structure according to another embodiment;

[0035] Fig. 10 is an exploded view of the structure of Fig. 9;

[0036] In the figure: 100, digital signage; 10, display module structure; 20, display panel; 30, rear shell; 50, first buffer; 60, second buffer;

[0037] 1, back plate; 2, backlight assembly; 3, limiting member; 4, outer frame;

[0038] 11, plate body; 12, mounting portion; 121, first plate body; 122, second plate body; 123, bent plate body; 124, mounting cavity; 1201, first mounting hole; 1202, second mounting hole; 1241, opening;

[0039] 21, optical film; 22, reflecting sheet; 23, diffusion plate; 211, mounting hole;

[0040] 31, connecting portion; 32, first plug-in portion; 33, extension portion; 313, third mounting hole; 34, nut portion; 35, second plug-in portion; 36, screwing member; 302, mounting through hole; 51, avoiding gap;

[0041] 41, first protection plate; 42, second protection plate; 43, connecting plate; 401, cavity. DETAILED DESCRIPTION

[0042] In order to facilitate the understanding of the present application, the present application will be described in more detail below in conjunction with the drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element, or one or more intervening elements can be present therebetween. The terms "upper", "lower", "inner", "outer", "vertical", "horizontal" and the like used in the specification indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0043] Unless otherwise defined, all technical and scientific terms used in the specification have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification includes any and all combinations of one or more related listed items.

[0044] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0045] With the rapid development of technology and the advent of the digital age, digital signage and other products have been widely used in commercial displays, information dissemination and other fields. These products, with their efficient information dissemination capabilities, dynamic visual effects and interactive experiences, have greatly attracted people's attention. These products are not only widely used in large shopping malls, supermarkets, stations and other public places, but also gradually penetrate into private spaces such as homes and offices. However, in actual application, display products such as digital signage often face various complex installation and use environments, such as horizontal hanging, vertical hanging, forward tilting, backward tilting and other installation requirements.

[0046] In the design and manufacturing process of display products such as digital signage, the display module structure as an important component directly affects the imaging effect of the display product. The traditional display module structure generally includes a back plate, a backlight assembly, a middle frame and a front frame. The front frame fixes the backlight assembly between the middle frame and the back plate, and the middle frame is used to carry the display panel. Due to the existence of the middle frame, the traditional digital signage generally appears relatively thick and heavy. Based on this, the inventors of the present application have designed a new solution through research, including redesigning the shape of the back plate and canceling the middle frame in the existing design, so that the back plate can carry the display panel, making the entire product light and thin.

[0047] The backlight assembly includes optical films, a diffusion plate and a reflective sheet stacked in sequence. The aforementioned new back plate forms an open installation cavity on the side. During assembly, the optical films, the diffusion plate and the reflective sheet all need to be inserted into the installation cavity through the opening, and the opposite sides of the optical films are also fixed on the diffusion plate by double-sided adhesive. In this way, the side-mounted backlight assembly replaces the traditional straight-up and straight-down mounting method.

[0048] However, the inventors have found through long-term experimental research that after replacing the middle frame with the new back plate, the aforementioned side-mounted optical film method can also cause the optical film to arch. This problem is more prominent when the digital signage is used in scenarios such as horizontal hanging, vertical hanging, forward tilting and backward tilting, affecting the imaging effect of the digital signage. Specifically, when the optical film is fixed on the diffusion plate by double-sided adhesive on both sides of the digital signage, the optical film is prone to swelling and deformation due to heat. At this time, the optical film is difficult to swell outward, so that the part of the optical film that is stretched out when it swells will accumulate relative to the end of the optical film, and eventually the local area of the optical film equivalent to the end will arch, affecting the display effect of the digital signage.

[0049] Based on this, in this solution, the inventors opened mounting holes on the optical film and added an additional limiting member. This limiting member extends from the outside of the back plate into the mounting cavity of the back plate and is inserted into the mounting hole. There is also a margin gap between the limiting member and the inner wall of the mounting hole. By setting the margin gap, space is reserved for the optical film to expand, thereby reducing the impact of thermal expansion of the optical film. Thus, while reducing the thickness of the digital signage, the display effect of the digital signage can still be guaranteed.

[0050] To facilitate understanding of the structure of the display module in this application, the following figures show the structure proposed by the inventors to improve the above-mentioned problems. However, this does not mean that the structure of the display module is limited to the components shown in the figures. In other words, the display module is not limited to the structure shown in the following figures, and the structure of the display module can be appropriately adjusted as needed.

[0051] As shown in Figures 1-2, one embodiment of this application provides a digital signage 100, which includes a display module structure 10 and a display panel 20. The display panel 20 is disposed on the display module structure 10, that is, the display panel 20 is supported on the display module structure 10. The display module structure 10 provides the necessary light source for the display panel 20, and the display panel 20 realizes image display by adjusting the arrangement of internal liquid crystal molecules.

[0052] In some embodiments, as shown in FIG2, the digital signage 100 further includes a rear cover 30, which covers the display module structure 10 and is connected to the display module structure 10. The rear cover 30 prevents external forces from directly acting on the display module structure 10 and can protect the display module structure 10.

[0053] The aforementioned display module structure 10, as shown in Figures 3, 5, or 8, includes a backplate 1, a backlight assembly 2, and a limiting member 3. The backlight assembly 2 is disposed within the backplate 1, and the limiting member 3 is disposed on the backplate 1. The backlight assembly 2 includes an optical film 21, and the limiting member 3 is used to constrain the optical film 21 to prevent it from moving arbitrarily. It should be noted that the limiting member 3 constrains the optical film 21 by allowing it to deform, expand, and move within a predetermined range; it does not mean that the relative position of the optical film 21 and the backplate 1 is fixed. Simultaneously, it also prevents the optical film 21 from detaching from the backplate 1.

[0054] In some embodiments, as shown in FIG2, the display module structure 10 further includes an outer frame 4, which is connected to the back plate 1. The outer frame 4 is used to fix the relative position between the display panel 20 and the back plate 1, preventing the display panel 20 from detaching from the back plate 1, and also protecting the back plate 1 and the display panel 20 around its perimeter. The outer frame 4 is provided with a cavity 401.

[0055] As shown in FIG. 3, FIG. 5 or FIG. 8, the backboard 1 comprises a plate body 11 and a mounting portion 12 connected with the plate body 11, the mounting portion 12 is located at the edge of the plate body 11. The mounting portion 12 comprises a first plate body 121 and a second plate body 122 which are arranged at intervals along the first direction X, and the first plate body 121 and the second plate body 122 can construct a mounting cavity 124 which can accommodate part of the optical film 21. The first plate body 121 is used to carry the display panel 20, and the second plate body 122 is used to carry the backlight assembly 2. The first direction X refers to the thickness direction of the display module structure 10.

[0056] In some embodiments, as shown in FIG. 3, FIG. 5 or FIG. 8, the mounting portion 12 further comprises a bent plate body 123, both ends of the bent plate body 123 are connected with the first plate body 121 and the second plate body 122 respectively, thereby constructing a F-shaped backboard structure and forming a mounting cavity 124 with an opening 1241 on one side. The bent plate body 123 is configured to extend from one end of the second plate body 122 towards the first plate body 121 and beyond the first plate body 121, so that the part of the bent plate body 123 beyond the first plate body 121 can block the display panel 20 from exceeding the edge of the backboard 1.

[0057] The shape of the bent plate body 123 can be set as needed, for example, it can be U-shaped, or it can be a straight line shape, and of course it can also be other shapes. The first plate body 121, the second plate body 122 and the bent plate body 123 can be made by one-piece molding, or can be connected by insertion, clamping and the like. In this embodiment, the mounting portion 12 and the plate body 11 are made by one-piece molding, which is beneficial to make the backboard 1 have better flatness, reduce the risk of light leakage from the gap, and improve the display effect of the digital signage 100.

[0058] In some embodiments, as shown in FIG. 3, FIG. 4 or FIG. 7, the backlight assembly 2 comprises an optical film 21, the optical film 21 extends into the mounting cavity 124 along the opening 1241, and part of the optical film 21 in the mounting cavity 124 is provided with a mounting hole 211. The shape of the mounting hole 211 can be set as needed, for example, the shape of the mounting hole 211 is a long hole shape. For example, the shape of the mounting hole 211 is an oval shape.

[0059] In some embodiments, as shown in FIG. 3, FIG. 5 or FIG. 8, the backlight assembly 2 further comprises a light emitting source (not shown), a reflecting sheet 22 and a diffusion plate 23, the light emitting source is arranged at one end surface of the reflecting sheet 22 away from the back plate 1, one end surface of the reflecting sheet 22 abuts against the back plate 1, the other end surface of the reflecting sheet 22 abuts against one end surface of the diffusion plate 23, and the other end surface of the diffusion plate 23 abuts against the optical film sheet 21, and the diffusion plate 23 supports the optical film sheet 21. The light emitting source is configured to emit light to the diffusion plate 23, the diffusion plate 23 can change the beam angle of the light, and the reflecting sheet 22 is configured to reflect part of the exposed light so that the reflected light can be emitted to the diffusion plate 23, thereby fully utilizing the light and improving the utilization efficiency of the light.

[0060] In some embodiments, as shown in FIG. 3, FIG. 5 or FIG. 8, the limiting member 3 is arranged in the mounting portion 12, and the limiting member 3 is configured to be partially arranged in the mounting cavity 124 and inserted into the mounting hole 211, and the outer wall surface of the part of the limiting member 3 located in the mounting hole 211 has a clearance gap with the inner wall surface of the mounting hole 211. In this way, the limiting member 3 can constrain the optical film sheet 21 to avoid the optical film sheet 21 from moving randomly relative to the back plate 1, and at the same time, since the mounting hole 211 of the optical film sheet 21 and the limiting member 3 are provided with a clearance gap, the optical film sheet 21 can provide a space for expansion when heated, thereby reducing the risk of film arching of the optical film sheet 21, and also does not affect the contraction of the optical film sheet 21 when returning to normal temperature.

[0061] The clearance gap refers to that the inner wall surface of the mounting hole 211 and the outer wall surface of the part of the limiting member 3 located in the mounting hole 211 are not gap-fitted, but have a space larger than the gap-fitted space, so as to provide a space for expansion when the optical film sheet 21 is heated.

[0062] In some embodiments, the number of limiting members 3 and the number of mounting holes 211 are both multiple, the multiple limiting members 3 are arranged at intervals in the mounting portion 12, and one limiting member 3 is inserted into one mounting hole 211. In this way, under the action of the multiple limiting members 3 and the multiple mounting holes 211, the optical film sheet 21 can expand uniformly when heated.

[0063] In some embodiments, the number of mounting portions 12 is multiple and not more than four, and the multiple mounting portions 12 are respectively located at different side ends of the plate body 11, and multiple limiting members 3 can be arranged on each mounting portion 12. Correspondingly, along the first direction X, the mounting hole 211 is arranged on the optical film sheet 21 below the limiting member 3, and each limiting member 3 has part extending into the mounting cavity 124 and inserted into the mounting hole 211. Thus, the optical film sheet 21 can be constrained at multiple positions on the back plate 1, and the optical film sheet 21 has a space for expansion when heated.

[0064] It can be understood that the conventional digital signage usually has a plastic middle frame, and the display panel is carried through the plastic middle frame. The plastic frame cooperates with the outer frame of the digital signage to form a sealed space to block external light from entering the optical film, so as to ensure that the external light does not interfere with the normal work of the backlight assembly. The digital signage 100 of the embodiment of the application can omit the plastic middle frame, thereby reducing the internal space of the outer frame 4 and being beneficial to reducing the thickness of the outer frame. Specifically, the mounting portion 1 of the back plate 1 of the display module structure 10 adopted by the application adopts an F-fold back plate structure. On the one hand, the F-fold back plate structure can directly serve as a carrier for the display panel 20, so that the plastic middle frame can be cancelled. On the other hand, the F-fold back plate structure can also serve as a carrier for part of the optical film 21. In addition, the F-fold back plate structure can also block external light to avoid the external light from irradiating the optical film 21.

[0065] In some embodiments, as shown in FIG. 3, FIG. 5 or FIG. 8, the limiting member 3 includes a connecting portion 31 and a first plug-in portion 32 connected with the connecting portion 31. The connecting portion 31 is connected to the mounting portion 12, and the mounting portion 12 is provided with a first mounting hole 1201. The first plug-in portion 32 passes through the first mounting hole 1201 and is inserted into the mounting hole 211. In this way, when the optical film 21 expands outward due to heat expansion, the optical film 21 can expand in the space of the excess gap between the mounting hole 211 and the first plug-in portion 32 under the action of the first plug-in portion 32, thereby reducing the risk of film arching of the optical film 21. In addition, when the digital signage 100 is hung horizontally or vertically, the first plug-in portion 32 can support the optical film 21, thereby increasing the stability of the structure of the optical film 21 and reducing the risk of deformation of the optical film 21.

[0066] It can be understood that the mounting position and mounting mode of the limiting member 3 and the mounting portion 12 can be set as needed as long as the limiting member 3 can constrain the optical film 21. In order to facilitate understanding of different situations of the mounting position and mounting mode of the limiting member 3 and the mounting portion 12, three existing situations are taken as examples for description below, but the structure and mounting mode of the limiting member 3 are not limited thereto as long as the optical film 21 can be constrained.

[0067] Embodiment one

[0068] In some embodiments, as shown in FIGS. 3-4, the limiting member 3 is arranged on the second plate body 122 away from the first plate body 121 along the first direction X. Wherein, the connecting portion 31 of the limiting member 3 is connected to the second plate body 122, and the second plate body 122 is provided with the first mounting hole 1201 mentioned above, and the first plug-in portion 32 passes through the first mounting hole 1201 and is inserted into the mounting hole 211. In this way, compared with the mode of arranging the limiting member 3 on the first plate body 121, the present embodiment arranges the limiting member 3 on the second plate body 122, which can reduce the influence of the limiting member 3 on the display panel 20 carried on the first plate body 121, and at the same time, does not occupy the space of the first plate body 121 for carrying the display panel 20.

[0069] The limiting member 3 of the present embodiment can constrain the optical film 21, avoiding the optical film 21 from moving randomly relative to the back plate 1 in the scene of hanging horizontally or vertically, and at the same time, since the mounting hole 211 of the optical film 21 and the limiting member 3 are provided with a clearance gap, when the optical film 21 expands outward due to heat, since the size of the mounting hole 211 is larger than the size of the first plug-in portion 32, the space of the mounting hole 211 except the space occupied by the first plug-in portion 32 can be used as the expansion allowance of the optical film 21 when it expands outward, which reduces the risk that the optical film 21 is blocked by the first plug-in portion 32 and cannot expand outward once it is heated and expanded, and avoids the risk that the optical film 21 accumulates in the middle after being unable to expand outward due to heat expansion, causing film arching.

[0070] The connection mode between the connecting portion 31 and the second plate body 122 can be bonding by double-sided adhesive tape or the like, or can be connected by setting screws or bolts or the like, of course, it can also be other, as long as it does not affect the normal use of the digital signage 100.

[0071] In some embodiments, the connecting portion 31 and the second plate body 122 are fixed by bonding. Specifically, one side of the connecting portion 31 facing the second plate body 122 is provided with a bonding member, and the connecting portion 31 is bonded to the second plate body 122 by the bonding member. In this way, under the blockage of the second plate body 122, it is beneficial to reduce the risk that the heat generated by the optical film 21 during work directly acts on the bonding member to cause the adhesion to decrease, and it is beneficial to improve the bonding firmness between the connecting portion 31 and the second plate body 122. The bonding member can be glue, or double-sided adhesive tape, of course, it can also be other, as long as it can realize the bonding of the connecting portion 31 and the second plate body 122.

[0072] In some embodiments, the limiting member 3 further comprises an extension 33, the extension 33 is connected with one end of the connecting portion 31, and the extension 33 is configured to be arranged in an extending manner away from the second plate body 122 along the first direction X. In other words, the extension 33 is arranged in a protruding manner relative to the connecting portion 31 along the first direction X. In this way, the outer frame can abut against the extension 33 during assembly, so that the connecting portion 31 is firmly bonded with the second plate body 122. Moreover, when the digital signage 100 is in the horizontal hanging state or the vertical hanging state, the extension 33 can abut against the inner wall surface of the outer frame of the digital signage 100, thereby playing a role of supporting the display module structure 10.

[0073] In some embodiments, as shown in FIG. 4, along the first direction X, the distance d1 between the one end of the extension 33 away from the connecting portion 31 and the inner wall surface of the outer frame 4 is less than the size d2 of the first plug-in portion 32. In this way, if the connecting portion 31 and the second plate body 122 are connected by an adhesive such as double-sided tape, when the bonding fails, that is, the connecting portion 31 and the second plate body 122 are separated, under the blockage of the inner wall surface of the outer frame 4, the risk of the first plug-in portion 32 falling out of the first mounting hole 1201 and the limiting member 3 falling off is avoided. In the present embodiment, the outer frame 4 comprises a first protective plate 41, a second protective plate 42, and a connecting plate 43, both ends of the connecting plate 43 are connected with the first protective plate 41 and the second protective plate 42 respectively, and the first protective plate 41, the second protective plate 42, and the connecting plate 43 jointly constitute a cavity 401 for accommodating the mounting portion 12. The distance between the one end of the extension 33 away from the connecting portion 31 and the second protective plate 42 is d1.

[0074] In some embodiments, the connecting portion 31 is provided with a first positioning structure (not shown in the figure), and the second plate body 122 is provided with a second positioning structure (not shown in the figure), the first positioning structure and the second positioning structure are matched with each other to enable the connecting portion 31 to be quickly positioned and mounted to the second plate body 122. In the present embodiment, the first positioning structure is two positioning holes arranged at intervals, and the second positioning structure is two protruding columns arranged at intervals, one positioning hole is sleeved on one protruding column.

[0075] Of course, the first positioning structure and the second positioning structure are not limited to the positioning holes and the protruding columns mentioned above, as long as they can enable the connecting portion 31 to be quickly positioned and mounted to the second plate body 122. For example, the first positioning structure can be a boss, and the second positioning structure can be a groove.

[0076] Embodiment two

[0077] In some embodiments, as shown in FIGS. 5-7, the limiting member 3 is arranged on the first plate body 121 along the first direction X. In this embodiment, the connecting portion 31 of the limiting member 3 is connected to the first plate body 121, and the first insertion portion 32 passes through the first plate body 121 and is arranged in the mounting hole 211. In this way, compared with the arrangement of the limiting member 3 on the second plate body 122, the limiting member 3 in this embodiment is arranged on the first plate body 121, and the space of the bent plate body 123 of the mounting portion 12 beyond the first plate body 121 can be used to accommodate the limiting member 3, thereby avoiding the excessive space occupied by the limiting member 3 and facilitating the reduction of the overall thickness of the display module structure 10.

[0078] In some embodiments, as shown in FIGS. 5-7, the first plate body 121 is provided with the first mounting hole 1201, the inner wall surface of the first mounting hole 1201 has an internal thread, the outer surface of the connecting portion 31 has an external thread, and the connecting portion 31 is threadedly connected to the first mounting hole 1201, thereby achieving the relative fixation of the limiting member 3 and the mounting portion 12. In this way, the limiting member 3 can be detachably mounted on the mounting portion 12, which is convenient for users to assemble the display module structure 10.

[0079] In some embodiments, the connecting portion 31 and the first insertion portion 32 are integrally formed and have a screw shape, wherein the connecting portion 31 is a screw rod segment with an external thread on the screw, and the first insertion portion 32 is a light rod segment of the screw. In this way, the screw rod segment can be connected to the first mounting hole 1201, and the light rod segment can be inserted into the mounting hole 211 to constrain the optical film 21. Since the surface of the light rod segment is smooth, burrs can be avoided, and the risk of scratching the mounting hole 211 of the optical film 21 is reduced. Moreover, the diameter of the light rod segment is smaller than that of the screw rod segment, which facilitates the direct passing of the light rod segment through the first mounting hole without the need for alignment with the internal thread on the inner wall surface of the first mounting hole 1201 during assembly, thereby reducing the installation difficulty of the limiting member 3 and improving the installation efficiency.

[0080] In some embodiments, as shown in FIGS. 5-7, the limiting member 3 further includes a nut portion 34 connected to one end of the connecting portion 31 away from the first insertion portion 32. In the second direction Y perpendicular to the first direction X, the cross-sectional area of the nut portion 34 is greater than that of the connecting portion 31, and the nut portion 34 abuts against the surface of the first plate body 121. In this way, the assembly personnel or maintenance personnel can drive the connecting portion 31 to rotate by means of the nut portion 34 to release the connection between the connecting portion 31 and the internal thread hole.

[0081] In some embodiments, the nut portion 34 can be provided with a slot or a cross slot, or other shaped grooves or protrusions, so as to facilitate the assembly personnel or maintenance personnel to rotate the nut portion 34 by means of a tool.

[0082] The limiting member 3 of the embodiment can constrain the optical film 21, avoiding the optical film 21 from moving randomly relative to the back plate 1 in scenarios such as horizontal hanging or vertical hanging. Meanwhile, since the mounting hole 211 of the optical film 21 and the limiting member 3 are provided with a clearance gap, when the optical film 21 expands outward due to heat, the space of the mounting hole 211 other than the space occupied by the first plug-in part 32 can serve as an expansion allowance for the optical film 21, reducing the risk that the optical film 21 cannot expand outward due to the blocking of the first plug-in part 32, and avoiding the risk that the optical film 21 accumulates in the middle due to the inability to expand outward, causing film arching. Meanwhile, the limiting member 3 of the embodiment is designed in the shape of a screw, and can be quickly installed by screwing the screw segment with the first mounting hole 1201 on the first plate body 121, which is conducive to improving the assembly effect.

[0083] Embodiment Three

[0084] In some embodiments, as shown in FIGS. 8-10, along the first direction X, the limiting member 3 is arranged on the first plate body 121, and the first plate body 121 is provided with the first mounting hole 1201. The connecting part 31 of the limiting member 3 is connected to the first plate body 121, and the first plug-in part 32 passes through the first mounting hole 1201 and is inserted into the mounting hole 211. In this way, the space of the bending plate body 123 of the mounting part 12 beyond the first plate body 121 can be used to accommodate the limiting member 3, thereby reducing the space occupied by the limiting member 3 in the thickness direction, and facilitating the reduction of the overall thickness of the display module structure 10.

[0085] In some embodiments, the first plug-in part 32 is a plug-in plate, and the mounting hole 211 is an elongated hole matched with the plug-in plate. It should be noted that the mounting hole 211 is an elongated hole matched with the plug-in plate, which means that the mounting hole 211 and the plug-in plate are matched and have a clearance gap therebetween.

[0086] In some embodiments, as shown in FIGS. 8-10, the connecting part 31 and the first plug-in part 32 are both in the shape of a plate. In this way, the surface of the connecting part 31 can be quickly attached to the surface of the first plate body 121, and the first plug-in part 32 can be quickly inserted into the mounting hole 211 through the first mounting hole 1201. Meanwhile, the contact between the first plug-in part 32 and the inner wall surface of the mounting hole 211 is surface contact, which is conducive to increasing the stress area, reducing the pressure intensity of the optical film 21 under the action of gravity when the digital signage 100 is horizontally hung or vertically hung, and reducing the degree of deformation of the optical film 21 under the support of the first plug-in part 32.

[0087] In some embodiments, as shown in FIGS. 8-10, the limiting member 3 further comprises a second insertion portion 35 connected to the connecting portion 31, the second insertion portion 35 and the first insertion portion 32 are respectively located at two ends of the connecting portion 31, and the second insertion portion 35 and the first insertion portion 32 are both arranged at an angle with the connecting portion 31 and both face the same side relative to the connecting portion 31. The second insertion portion 35 and the first insertion portion 32 are both arranged at an angle with the connecting portion 31 means that the angle between the first insertion portion 32 and the second insertion portion 35 and the connecting portion 31 is greater than 0°, that is, the three are not on the same horizontal line. In this embodiment, the angle between the first insertion portion 32 and the second insertion portion 35 and the connecting portion 31 is 90°.

[0088] The first plate body 121 is provided with a mounting hole 302, and the second insertion portion 35 is arranged in the mounting hole 302. In this way, under the action of the second insertion portion 35, the mounting position can be quickly positioned, and the second insertion portion 35 and the first insertion portion 32 jointly abut against the inner wall surface of the first plate body 121, reducing the risk of relative sliding of the limiting member 3 and the first plate body 121, and being conducive to improving the stability of the display module structure 10. Moreover, compared with the mode of arranging only the first insertion portion 32 to bear the gravity of the optical film 21, the second insertion portion 35 can play a role in enhancing the overall strength of the limiting member 3. Specifically, in the scene of hanging horizontally or vertically, when the optical film 21 is subjected to the action of gravity and applies a force away from the second insertion portion 35 to the first insertion portion 32, the second insertion portion 35 is supported by the inner wall surface of the mounting hole 302 and jointly bears the gravity of the optical film 21 with the first insertion portion 32, thereby reducing the influence of the optical film 21 on the first insertion portion 32.

[0089] Further, along the direction in which the first plate body 121 deviates from the bent plate body 123, the part of the second insertion portion 35 for contacting the inner wall surface of the mounting hole 302 and the part of the first insertion portion 32 for contacting the inner wall surface of the first mounting hole 1201 both play a role in limiting the movement of the limiting member 3 when the limiting member 3 is mounted with the optical film 21, which is conducive to improving the stability of the connection between the limiting member 3 and the first plate body 121.

[0090] In some embodiments, the connecting portion 31, the first insertion portion 32, and the second insertion portion 35 are all designed in a plate-shaped structure, which is conducive to increasing the contact area with the first plate body 121, reducing the pressure intensity that the limiting member 3 is subjected to when mounting the optical film 21, reducing the risk of deformation of the optical film 21 caused by excessive pressure, and reducing the risk of damage to the optical film 21.

[0091] It can be understood that the shape of the mounting hole 302 can be any shape as long as the second plug-in part 35 can be inserted into the mounting hole 302, for example, it can be a square hole or a waist-shaped hole, etc. Similarly, the shape of the first mounting hole 1201 can be any shape as long as the first plug-in part 32 can be inserted.

[0092] In some embodiments, the connecting part 31, the first plug-in part 32 and the second plug-in part 35 are integrally formed.

[0093] The connecting mode between the connecting part 31 and the first plate body 121 can be various as long as the connecting part 31 and the first plate body 121 can be relatively fixed. For example, the connecting part 31 and the first plate body 121 can be relatively fixed by bonding, specifically, the connecting part 31 is provided with a bonding member at one end face thereof facing the first plate body 121, and the connecting part 31 is bonded to the first plate body 121 through the bonding member, and the bonding member can include but is not limited to glue, double-sided tape, etc. For another example, the connecting part 31 and the first plate body 121 are connected by laser welding.

[0094] In some embodiments, as shown in FIGS. 8-10, the display module structure 10 further comprises a screw member 36, the first plate body 121 is provided with a second mounting hole 1202, the inner wall surface of the second mounting hole 1202 has internal threads, the connecting part 31 is provided with a third mounting hole 313, the screw member 36 passes through the third mounting hole 313 and is screwed with the second mounting hole 1202 to relatively fix the limiting member 3 with the first plate body 121. The screw member 36 can be a bolt, or other members with threads, as long as it can fix the limiting member 3 with the first plate body 121. When the screw member 36 is screwed with the second mounting hole 1202, a certain clamping force is formed between the first plug-in part 32 and the second plug-in part 35, so that the limiting member 3 can be clamped on the first plate body 121 and fixed on the first plate body 121 through the screw member 36.

[0095] The shape of the limiting member 3 can be U-shaped or other shapes, which can be set as needed. In the present embodiment, the limiting member 3 is U-shaped, and the size of the first plug-in part 32 protruding relative to the surface of the connecting part 31 is greater than the size of the second plug-in part 35 protruding relative to the surface of the connecting part 31, and the second plug-in part 35 does not abut against the optical film 21, so as to avoid surface scratches and other influences when the second plug-in part 35 expands against the optical film 21.

[0096] The limiting member 3 in the embodiment can constrain the optical film 21, avoiding the optical film 21 from moving randomly relative to the back plate 1 in the scene of hanging horizontally or vertically, and meanwhile, since the mounting hole 211 of the optical film 21 and the limiting member 3 are provided with a clearance gap, when the optical film 21 expands outward due to heat, since the size of the mounting hole 211 is larger than the size of the first plug-in part 32, the space of the mounting hole 211 except the space occupied by the first plug-in part 32 can be used as the expansion allowance of the optical film 21 when it expands outward, reducing the risk that the optical film 21 is blocked by the first plug-in part 32 and cannot expand outward once it expands due to heat, and avoiding the risk that the optical film 21 accumulates in the middle after expanding outward due to heat and causes film arching. Meanwhile, the limiting member 3 in the embodiment is designed as a U-shaped plate structure, and the first plug-in part 32 and the second plug-in part 35 are jointly installed to the first plate body 121, which is conducive to quick installation and improves the assembly effect.

[0097] In some embodiments, as shown in FIG. 3, FIG. 5 or FIG. 8, the display module structure 10 further comprises a first buffer 50, which is arranged on an end surface of the first plate body 121 away from the second plate body 122, and the first buffer 50 is used for abutting against the display panel 20. In the embodiment, the first buffer 50 is foam, which can reduce the risk that the edge of the display panel 20 directly contacts the back plate 1, thereby protecting the display panel 20.

[0098] In some embodiments, as shown in FIG. 8-9, the first buffer 50 is provided with a avoiding gap 51, which is used for avoiding the limiting member 3, and is conducive to reducing the risk that the first buffer 50 is stacked on the limiting member 3 when it is arranged on the first plate body 121, thereby increasing the overall thickness of the display module structure 10. In the embodiment, the connecting part 31 is arranged in the avoiding gap 51.

[0099] In some embodiments, in the first direction X, the thickness of the first buffer 50 is greater than the thickness of the connecting part 31, and the first buffer 50 is used for bearing the display panel 20, which can reduce the risk that the first buffer 50 is compressed and collides with the connecting part 31 when it is pressed by the display panel 20, thereby improving the safety performance of the display module structure 10.

[0100] In some embodiments, as shown in FIG. 3, FIG. 5 or FIG. 8, the display module structure 10 further comprises a second buffer 60, which is connected to a side of the first plate body 121 facing the optical film 21, and the second buffer 60 is located between the optical film 21 and the first plate body 121. In this way, the optical film 21 can avoid directly contacting the first plate body 121, thereby reducing the risk of damage to the optical film 21. The second buffer 60 includes but is not limited to foam, as long as it has the ability of elastic deformation.

[0101] Through the above structure, when the optical film sheet 21 of the display module structure 10 is constrained by using the limiting member 3, the risk of film arching caused by thermal expansion of the optical film sheet 21 during operation of the display module structure 10 can be reduced, which is beneficial to improve the stability of the display module structure 10, and further meets the requirements of the optical film sheet 21 deformation in the scene of hanging or vertical hanging of the digital signage 100.

[0102] The above is only an embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A display module structure (10) characterized by, The display module structure (10) comprises: a back plate (1) comprising a plate body (11) and a mounting portion (12) connected to the plate body (11), the mounting portion (12) comprising a bent plate body (123), a first plate body (121) and a second plate body (122), the bent plate body (123), the first plate body (121) and the second plate body (122) surrounding a mounting cavity (124) with an opening (1241) on a side face, the first plate body (121) and the second plate body (122) being arranged at intervals along a first direction (X), and the first plate body (121) being used for carrying a display panel (20); a backlight assembly (2) arranged on an end face of the second plate body (122) facing the first plate body (121), the backlight assembly (2) comprising an optical film (21), the optical film (21) extending into the mounting cavity (124) along the opening (1241), and a part of the optical film (21) located in the mounting cavity (124) being provided with a mounting hole (211); a limiting member (3) extending into the mounting cavity (124) through the first plate body (121) or the second plate body (122) and being inserted into the mounting hole (211), and a part of the limiting member (3) located in the mounting hole (211) having a clearance with an inner wall surface of the mounting hole (211).

2. The display module structure (10) according to claim 1, characterized in that The limiting member (3) comprises a connecting portion (31) and a first plug-in portion (32) connected to the connecting portion (31), the connecting portion (31) being connected to the mounting portion (12), the mounting portion (12) being provided with a first mounting hole (1201), and the first plug-in portion (32) extending through the first mounting hole (1201) and being inserted into the mounting hole (211).

3. The display module structure (10) according to claim 2, characterized in that Along the first direction (X), the limiting member (3) is arranged on a side of the second plate body (122) away from the first plate body (121), the second plate body (122) is provided with the first mounting hole (1201), one face of the connecting portion (31) facing the second plate body (122) is provided with an adhesive member, and the connecting portion (31) is adhered to the second plate body (122) through the adhesive member.

4. The display module structure (10) according to claim 3, characterized in that The limiting member (3) further comprises an extension portion (33), the extension portion (33) being connected to one end of the connecting portion (31), and the extension portion (33) being arranged to extend away from the second plate body (122) along the first direction (X).

5. The display module structure (10) according to claim 4, characterized in that The display module structure (10) further comprises an outer frame (4) provided with a cavity (401), and the mounting portion (12) is arranged in the cavity (401); along the first direction (X), a distance between one end of the extension portion (33) away from the connecting portion (31) and an inner wall surface of the outer frame (4) is less than a size of the first plug-in portion (32).

6. The display module structure (10) according to claim 2, characterized in that The first plate body (121) is provided with the first mounting hole (1201), an inner wall surface of the first mounting hole (1201) is provided with an internal thread, an outer surface of the connecting part (31) is provided with an external thread, and the connecting part (31) is threadedly connected with the first mounting hole (1201).

7. The display module structure (10) according to claim 6, characterized in that The limiting member (3) further comprises a screw cap part (34) connected to one end of the connecting part (31) away from the first plug-in part (32), a cross-sectional area of the screw cap part (34) is greater than that of the connecting part (31) in the second direction (Y), the screw cap part (34) abuts against a surface of the first plate body (121), and the second direction (Y) is perpendicular to the first direction (X).

8. The display module structure (10) according to claim 6, characterized in that The limiting member (3) is a screw, the connecting part (31) is a screw rod segment provided with an external thread on the screw, and the first plug-in part (32) is a light rod segment of the screw.

9. The display module structure (10) according to claim 2, characterized in that The connecting part (31) is connected to the first plate body (121), and the first plate body (121) is provided with the first mounting hole (1201). The limiting member (3) further comprises a second plug-in part (35) connected to the connecting part (31), the second plug-in part (35) and the first plug-in part (32) are located at two ends of the connecting part (31) respectively, the second plug-in part (35) and the first plug-in part (32) are arranged at an angle with the connecting part (31) and are both directed to the same side relative to the connecting part (31), the first plate body (121) is provided with a mounting through hole (302), and the second plug-in part (35) is arranged in the mounting through hole (302).

10. The display module structure (10) according to claim 9, characterized in that The first plug-in part (32) is a plug-in plate, and the mounting hole (211) is a long strip hole matched with the plug-in plate.

11. The display module structure (10) according to claim 9, characterized in that An end surface of the connecting part (31) directed to the first plate body (121) is provided with an adhesive member, and the connecting part (31) is adhered to the first plate body (121) through the adhesive member.

12. The display module structure (10) according to claim 9, characterized in that The display module structure (10) further comprises a screwing member (36), the first plate body (121) is provided with a second mounting hole (1202), an inner wall surface of the second mounting hole (1202) is provided with an internal thread, the connecting part (31) is provided with a third mounting hole (313), the screwing member (36) passes through the third mounting hole (313) and is threadedly connected with the second mounting hole (1202), so that the limiting member (3) is relatively fixed with the first plate body (121).

13. The display module structure (10) according to claim 9, characterized in that The display module structure (10) further comprises a first buffering member (50) arranged at an end surface of the first plate body (121) away from the second plate body (122), the first buffering member (50) is provided with a avoiding gap (51), the connecting part (31) is arranged in the avoiding gap (51), and the first buffering member (50) is used for bearing the display panel (20).

14. The display module structure (10) according to claim 1, characterized in that The display module structure (10) further comprises a second buffer member (60) connected to one side of the first plate body (121) towards the optical film (21) and located between the optical film (21) and the first plate body (121).

15. The display module structure (10) according to claim 1, characterized in that, The number of the limiting members (3) and the number of the mounting holes (211) are both multiple, multiple limiting members (3) are arranged at intervals on the mounting portion (12), and one limiting member (3) is inserted into one mounting hole (211).

16. The display module structure (10) according to any one of claims 1-15, characterized in that The backlight assembly (2) further comprises a reflective sheet (22) and a diffusion plate (23), one end surface of the reflective sheet (22) abuts against the back plate (1), the other end surface of the reflective sheet (22) abuts against one end surface of the diffusion plate (23), and the other end surface of the diffusion plate (23) abuts against the optical film (21).

17. A digital sign, characterized by, The display module structure (10) and the display panel (20) according to any one of claims 1-16 are included, and the display panel (20) is arranged on the first plate body (121) of the display module structure (10).

Images