Waterproof display device and tiled display device
Patent Information
- Application Number
- CN202380010409.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-08-31
- Publication Date
- 2025-06-06
AI Technical Summary
The existing large-size splicing display devices lack waterproof performance and cannot meet the needs of application scenarios such as special underwater operations, water wading operations and fountains, affecting market layout and product development.
By providing a support structure and a pressure adjustment structure between the bottom plate and the diffusion plate, the expansion and contraction activities of the first and second elastic components are used to achieve a balance between stable support of the diffusion plate and internal and external pressure, thereby releasing the internal pressure under the premise of waterproofing.
It ensures the waterproof performance of the display device under water and in high temperature environments, avoids poor display problems caused by thermal expansion and underwater pressure, and ensures uniformity of display image quality and optimization of waterproof performance.
Smart Images
Figure CN120113344A_ABST
Abstract
Description
Waterproof display device and spliced display device Technical Field
[0001] Embodiments of the present disclosure relate to a waterproof display device and a spliced display device. Background Art
[0002] A spliced display device is usually formed by splicing together multiple independent display devices. With the changes in application scenarios such as outdoor, the display device is usually required to have a larger size. In order to meet the needs of various application scenarios, the application of spliced display devices is becoming more and more extensive. Each independent display device usually includes a display component and a backlight component. The middle frame included in the backlight component is arranged on one side of the display component. The middle frame is provided with a bearing platform that can bear the display component. The bearing platform needs to be connected and fixed to the non-display area of the display component by adhesive. The back plate included in the backlight component can support the middle frame. The backlight component provides a backlight source for the display component. The display component includes a display panel, a diffuser plate, a light guide plate, etc.
[0003] Summary of the Invention
[0004] At least one embodiment of the present disclosure provides a waterproof display device and a spliced display device, wherein the waterproof display device is provided with a support structure between a base plate and a diffusion plate, and a pressure regulating structure is provided on a side of the support structure away from the diffusion plate; the support structure includes a first elastic component, and the support structure is configured to elastically support the diffusion plate, and the pressure regulating structure includes a second elastic component, and the pressure regulating structure is configured to balance the pressure inside and outside the waterproof display device. When the display component included in the waterproof display device is subjected to pressure exerted by the external water environment underwater or thermally expands due to its own heat dissipation, the support structure will move with the expansion and contraction of the first elastic component to stably support the diffusion plate. At the same time, the size of the internal space of the pressure regulating structure can be adjusted by the expansion and contraction of the second elastic component included in the pressure regulating structure, so as to release the pressure inside the waterproof display device under the premise of waterproofness.
[0005] At least one embodiment of the present disclosure provides a waterproof display device, which includes: a backlight module and a display component, wherein the backlight module includes a back plate, and the back plate includes a bottom plate; the display component includes a diffuser plate, a supporting structure is arranged between the bottom plate and the diffuser plate, and a pressure regulating structure is arranged on a side of the supporting structure away from the diffuser plate; the supporting structure includes a first elastic component, and the supporting structure is configured to elastically support the diffuser plate, and the pressure regulating structure includes a second elastic component, and the pressure regulating structure is configured to balance the pressure inside and outside the waterproof display device.
[0006] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, the supporting structure includes a supporting body in contact with the diffuser plate, a first base and a second base; the first base includes a cylindrical part connected to the supporting body and a first supporting seat parallel to the bottom plate; the second base includes a second supporting seat parallel to the bottom plate, the first supporting seat is farther away from the diffuser plate relative to the second supporting seat, the second supporting seat includes a through hole, the cylindrical part passes through the through hole to be connected to the supporting body; the first elastic component is arranged on the outside of the cylindrical part, the first end of the first elastic component is connected to the supporting body, and the second end of the first elastic component is connected to the second supporting seat.
[0007] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, the base plate includes a raised portion protruding toward a side away from the diffuser plate, and two ends of the second support seat overlap the two sides of the base plate corresponding to the raised portion to form a first cavity structure, and the first support seat is in the first cavity structure.
[0008] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, the pressure adjustment structure includes a shell structure and a waterproof elastic layer arranged on the inner side of the shell structure, the waterproof elastic layer and the raised portion form a second cavity structure, the second elastic component is arranged in the second cavity structure, the first end of the second elastic component is connected to the surface of the raised portion away from the diffuser plate, and the second end of the second elastic component is connected to the surface of the waterproof elastic layer away from the diffuser plate.
[0009] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, there is a gap between the waterproof elastic layer and the housing structure.
[0010] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, the shell structure includes an outer shell and an inner shell, the inner shell extends in the extension direction of the second elastic component, one end of the inner shell is respectively connected to the two sides of the raised portion, and the other end of the inner shell is respectively connected to the end of the outer shell; the outer shell is located on the outside of the inner shell, and forms a space with the inner shell and the raised portion to accommodate the waterproof elastic layer and the second elastic component.
[0011] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, the maximum dimension of the planar shape of the convex portion is smaller than the maximum dimension of the planar shape of the second support seat.
[0012] For example, the waterproof display device provided in at least one embodiment of the present disclosure further includes an aggregate board formed by a conversion board, a common board, a power board and a main board, wherein the aggregate board is arranged in the middle of the backboard and close to the upper edge.
[0013] For example, the waterproof display device provided in at least one embodiment of the present disclosure also includes a waterproof shell, wherein the multiple pressure adjustment structures extend outside the waterproof shell, a heat sink is arranged between the waterproof shell and the assembly plate, and the heat sink is in direct contact with the back plate and the waterproof shell.
[0014] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, the fixing screws of the waterproof housing are arranged on the outside of the waterproof housing, and the waterproof housing and the back plate are fixed by a non-porous connection structure.
[0015] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, the structure of the hole-free connection includes: a cavity arranged on the back panel, a screw shaft that can be inserted into the cavity, a screw housing and a nut for fixing both sides of the screw shaft, a thread is arranged on the side of the end of the screw shaft away from the cavity, and the connection structure of the nut and the thread is configured to fix the screw shaft.
[0016] For example, the waterproof display device provided in at least one embodiment of the present disclosure further includes a circuit board and external wiring, wherein the circuit board and the external wiring are connected to the back panel via a quick-clip non-porous connection structure.
[0017] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, the quick-card type hole-free connection structure includes: a cavity provided on the back panel, a screw shaft that can be inserted into the cavity, a screw shell for fixing both sides of the screw shaft, and a fixing piece provided on the side of the end of the screw shaft away from the cavity, and the connection structure between the fixing piece and the screw shell is configured to fix the screw shaft.
[0018] For example, the waterproof display device provided in at least one embodiment of the present disclosure also includes a power line and a signal line, wherein the integrated wiring harness of the power line and the signal line is connected to the external device through the wire outlet hole of the waterproof shell, and the wire outlet hole adopts a waterproof structure.
[0019] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, a nano waterproof rubber pad is provided between the waterproof housing and the back plate.
[0020] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, the nano waterproof rubber pad includes a plurality of protruding structures, and the waterproof shell includes a plurality of grooves, and the plurality of protruding structures are respectively inserted into the plurality of grooves to fix the waterproof shell and the nano waterproof rubber pad in connection.
[0021] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, the power line, light strip line, signal line, split-screen control line and infrared probe line are concentrated into a single wiring harness, and a nano-waterproof rubber ring is provided outside the single wiring harness at the position corresponding to the wire outlet hole of the waterproof shell, and the nano-waterproof rubber ring is fixed to the wire outlet hole by screws.
[0022] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, the fixing screw holes of the nano waterproof rubber ring and the wire outlet hole are arranged on the outside of the waterproof housing.
[0023] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, the mating surface between the nano waterproof rubber ring and the waterproof housing is designed to be an inclined surface, and the inclination angle of the inclined surface is 3° to 5°.
[0024] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, the second elastic component is a memory spring, and the material of the second elastic component is a memory alloy wire.
[0025] For example, the waterproof display device provided by at least one embodiment of the present disclosure also includes a flexible circuit board, wherein the back panel also includes a side panel, the side panel and the bottom panel are integrally formed, the side panel includes a stamping part and an injection molding part, the stamping part includes four bending parts, and the accommodating space formed by the stamping part and the injection molding part is a fixed area of the flexible circuit board.
[0026] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, a platform portion is provided between the two bent portions of the punching portion close to the diffuser plate, and a light guide plate is provided on the platform portion.
[0027] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, there is a bending slope between the two bending portions of the stamping portion away from the diffuser plate, and the injection molding portion is provided with a textured pattern on the surface combined with the bending slope.
[0028] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, the injection-molded part includes a first part arranged parallel to the bending slope, and a second part connected to the first part. The first part and the second part are connected by a thin wall, and the thickness of the thin wall is 0.05mm to 0.2mm.
[0029] For example, in the waterproof display device provided in at least one embodiment of the present disclosure, the display component further includes a liquid crystal display panel, and the liquid crystal display panel and the end portion of the back plate are bonded by optical fixing glue.
[0030] At least one embodiment of the present disclosure further provides a spliced display device, which is formed by splicing a plurality of waterproof display devices as described in any of the above embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present disclosure, rather than limiting the present disclosure.
[0032] FIG1 is a schematic cross-sectional view of a waterproof display device according to at least one embodiment of the present disclosure;
[0033] FIG2A is an enlarged structural diagram of a portion of a waterproof display device provided by at least one embodiment of the present disclosure;
[0034] FIG2B is a schematic cross-sectional view of the connection between the stamping part and the injection molding part according to at least one embodiment of the present disclosure;
[0035] FIG3 is a schematic cross-sectional view of a support structure provided by at least one embodiment of the present disclosure;
[0036] FIG4 is a schematic cross-sectional view of a base plate and a support structure provided by at least one embodiment of the present disclosure;
[0037] FIG5 is a schematic cross-sectional view of an overall pressure regulating structure and a supporting structure provided by at least one embodiment of the present disclosure;
[0038] FIG6 is a schematic diagram of the overall three-dimensional structure of a pressure regulating structure and a support structure provided by at least one embodiment of the present disclosure;
[0039] FIG7 is a schematic diagram of the planar structure of the outer surface of a waterproof display device provided by at least one embodiment of the present disclosure;
[0040] 8 to 10 are schematic cross-sectional views of a structure of a non-porous connection provided by at least one embodiment of the present disclosure, from a non-connected state to a connected state;
[0041] 11 to 13 are schematic cross-sectional views of a quick-clip, hole-free connection structure from a non-connected state to a connected state, provided by at least one embodiment of the present disclosure;
[0042] FIG14 is a schematic cross-sectional view of a waterproof housing and a nano-waterproof rubber pad provided in at least one embodiment of the present disclosure;
[0043] FIG15 is a schematic cross-sectional view of a waterproof housing and a wire outlet provided in at least one embodiment of the present disclosure;
[0044] FIG16 is a schematic cross-sectional view of a fixing screw hole and a wire outlet hole provided by at least one embodiment of the present disclosure; and
[0045] FIG17 is a schematic diagram of a planar structure of a spliced display device provided by at least one embodiment of the present disclosure. DETAILED DESCRIPTION
[0046] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.
[0047] Unless otherwise defined, the technical or scientific terms used in this disclosure should have the usual meanings understood by persons of ordinary skill in the field to which this disclosure belongs. The words "first", "second" and similar terms used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.
[0048] Unless otherwise defined, the features such as "parallel", "perpendicular" and "same" used in the embodiments of the present invention include the situations of "parallel", "perpendicular", "same" in a strict sense, as well as the situations of "approximately parallel", "approximately perpendicular", "approximately the same" and the like that contain a certain error. For example, the above-mentioned "approximately" may mean that the difference between the compared objects is 10% of the average value of the compared objects, or within 5%. When the number of a component or element is not specifically indicated below in the embodiments of the present invention, it means that the component or element may be one or more, or may be understood as at least one. "At least one" refers to one or more, and "multiple" refers to at least two. The "same-layer setting" in the embodiments of the present invention refers to the relationship between multiple film layers formed by the same material after the same step (for example, a one-step patterning process). The "same layer" here does not always mean that the thickness of multiple film layers is the same or the height of multiple film layers in the cross-sectional view is the same.
[0049] Current large-scale display products, especially large-scale tiled display products, lack waterproofing. For applications such as specialized underwater operations, wading operations, and fountains, these products are unable to meet the waterproofing requirements. This impacts the market share of large-scale display products and hinders their further development. Therefore, improvements are necessary to enhance the market competitiveness of large-scale display products.
[0050] The inventors of the present disclosure have noticed that improvements can be made in terms of the overall structural design of the display device, the fixing method of each component, the connection method between each component, etc., so that the display device has high waterproof performance. For large-size display products with a sealed design, since the display product will release heat during operation, the temperature of the display product itself will increase, resulting in the problem of thermal expansion of the display product. In addition, in application scenarios such as special underwater operations, wading operations, fountains, etc., there will also be problems of pressure on the display product causing poor display of the display components. It is possible to consider using new materials such as memory metal to solve the problems caused by thermal expansion and underwater pressure when waterproof display products are sealed. The inventors of the present disclosure also noticed that the locations where each component is fixed with screws are the focus of waterproofing, and the locations of the outlet holes for various wires such as power lines and signal lines also need to be waterproofed. The integrated design of the conversion board, common board, main board, power board, etc. and various wires can also improve the waterproof effect.
[0051] At least one embodiment of the present disclosure provides a waterproof display device, which includes: a backlight module and a display component, the backlight module includes a back plate, the back plate includes a bottom plate; the display component includes a diffuser plate, a support structure is provided between the bottom plate and the diffuser plate, and a pressure adjustment structure is provided on a side of the support structure away from the diffuser plate; the support structure includes a first elastic component, the support structure is configured to elastically support the diffuser plate, and the pressure adjustment structure includes a second elastic component, the pressure adjustment structure is configured to balance the pressure inside and outside the waterproof display device. When the display component included in the waterproof display device is subjected to pressure exerted by the external water environment underwater or thermally expands due to its own heat dissipation, the support structure will move with the expansion and contraction of the first elastic component to stably support the diffuser plate, so as to ensure that the OD value is within a certain range and the display quality is uniform. At the same time, the expansion and contraction of the second elastic component included in the pressure adjustment structure can adjust the size of the internal space of the pressure adjustment structure to achieve balanced pressure inside and outside the waterproof display device, that is, the pressure inside the waterproof display device is released while the waterproof display device is waterproof.
[0052] For example, Figure 1 is a schematic diagram of the cross-sectional structure of a waterproof display device provided by at least one embodiment of the present disclosure. As shown in Figure 1, the waterproof display device 100 includes: a backlight module 101 and a display component 102, the backlight module 101 includes a back plate 1011, and the back plate 1011 includes a bottom plate 1012; the display component 102 includes a diffuser plate 1021, a support structure 103 is arranged between the bottom plate 1012 and the diffuser plate 1021, and a pressure adjustment structure 104 is arranged on the side of the support structure 103 away from the diffuser plate 1021; the support structure 103 includes a first elastic component 1031, and the support structure 103 is configured to elastically support the diffuser plate 1021, and the pressure adjustment structure 104 includes a second elastic component 1041, and the pressure adjustment structure 1041 is configured to balance the pressure inside and outside the waterproof display device 100. The support structure included in the waterproof display device will move with the expansion and contraction of the first elastic component 1031 to provide stable support for the diffuser plate 1021, so as to ensure that the OD value is within a certain range and the uniformity of the display quality. At the same time, the size of the internal space of the pressure regulating structure 104 can be adjusted through the expansion and contraction of the second elastic component 1041 included in the pressure regulating structure 104, so as to achieve a balance between the internal and external pressures of the waterproof display device.
[0053] For example, when the waterproof display device 100 is in operation, the display component 102 included therein will dissipate heat, causing the air sealed inside the waterproof display device 100 to expand due to the heat, which in turn will cause the diffuser plate 1021 to be subjected to an outward force exerted by the expanding air, so that the diffuser plate 1021 will bulge slightly outward. The support structure 103 will move upward as the first elastic component 1031 stretches to provide stable support for the diffuser plate 1021 to ensure that the OD value is within a certain range, thereby ensuring the uniformity of the display quality of the waterproof display device 100. At the same time, the heat inside the waterproof display device 100 is conducted to the interior of the pressure regulating structure 1041. The second elastic component 1041 included in the pressure regulating structure 104 stretches under the action of the continuously rising temperature, thereby increasing the internal space of the pressure regulating structure 1041, thereby releasing the pressure inside the waterproof display device 100 to achieve a balance between the pressure inside and outside the waterproof display device 100.
[0054] For example, when the waterproof display device 100 is operating underwater, as the depth of the submerged device increases, the pressure exerted by the external water environment on the display component 102 increases. When this pressure is transmitted to the diffuser plate 1021, the diffuser plate 1021 collapses under the pressure, squeezing the support structure 103. The support structure 103 stably supports the diffuser plate 1021 as the first elastic member 1031 contracts. The bottom of the support structure 103 partially blocks the conduction of heat into the pressure regulating structure 1041. As the temperature around the second elastic member 1041 decreases, the second elastic member 1041 shortens, shrinking the internal space of the pressure regulating structure 104. This squeezes the sealed air within the waterproof display device 100. The resulting internal air pressure offsets the external water pressure, preventing damage to the display component 102 caused by excessive external water pressure. This also ensures that the pressure inside and outside the waterproof display device 100 is consistent, thus ensuring the waterproof performance of the waterproof display device 100.
[0055] For example, as shown in FIG1 , a light source unit 105 and a support plate 106 for carrying the light source unit 105 are further provided on the bottom plate 1012 . The light source unit 105 may be a light emitting diode. For example, a plurality of light emitting diode arrays are provided on the bottom plate 1012 to provide a backlight source for the display component 102 .
[0056] For example, Figure 2A is an enlarged structural schematic diagram of a partial position of the waterproof display device provided by at least one embodiment of the present disclosure. Combined with Figure 1 and Figure 2A, the waterproof display device 100 includes an appearance sealant 1023, a display panel 1022, an optical fixing glue 1024, a diffuse reflection sheet 1025, an optical film material 1026, a diffuser plate 1021, a light guide plate 1027, a cover film 107, an injection molding part 1013 of the back plate 1011, a stamping part 1014 of the back plate 1011, a supporting foam 109, a reflection sheet 110 and a flexible circuit board 111.
[0057] For example, as shown in FIG2A , the four sides of the stamping portion 1014 of the back plate 1011 are formed by deep drawing process, so that there are no seams at the four bent portions of the back plate 1011 , thereby ensuring that the waterproof display device 100 has no risk of water leakage.
[0058] For example, as shown in FIG. 2A , the bent portion of the back plate 1011 is processed using an automated machine tool with a program control system to ensure the straightness and accuracy of the bent portion to better support the display component 102 .
[0059] 2A , the appearance sealant 1023 can connect the display component 102 to the injection molded portion 1013 of the back panel 1011 . The injection molded portion 1013 of the back panel 1011 can protect the structure within the accommodation space formed by the injection molded portion 1013 and the stamped portion 1014 of the back panel 1011 .
[0060] For example, as shown in FIG. 2A , the display panel 1022 may be a liquid crystal display panel, and the display panel 1022 is used to display images.
[0061] For example, as shown in FIG2A , the optical fixing adhesive 1024 can connect the display panel 1022 to the top of the stamped portion 1014 of the back panel 1011, and connect the display panel 1022 to the optical film 1026. The optical fixing adhesive 1024 is a transparent UV-curable adhesive that is also waterproof. After curing, the optical fixing adhesive 1024 can achieve a waterproof effect. For example, the optical film 1026 can be a haze adjustment layer, etc., which is not limited in the embodiments of the present disclosure.
[0062] For example, in one example, the tensile strength of the optical fixing glue 1024 is greater than 6 times the tensile strength of ordinary optical glue, and the thickness of the optical fixing glue 1024 is greater than 0.3 mm, so as to ensure that the optical fixing glue 1024 has high elasticity and stretchability, and ensure that the waterproof display device has sufficient elasticity to absorb the deformation of the display panel when subjected to pressure from the external water environment.
[0063] For example, as shown in FIG. 2A , a chip-on-film (COF) 107 is provided between the injection molding portion 1013 of the back plate 1011 and the stamping portion 1014 of the back plate 1011 . The COF 107 fixes an integrated circuit (IC) on a corresponding circuit board.
[0064] For example, as shown in Figure 2A, a flexible circuit board 111 is arranged in the accommodation space formed by the injection molding part 1013 of the back panel 1011 and the stamping part 1014 of the back panel 1011. The flexible circuit board 111 is connected to the cover film 107, and a supporting foam 109 is arranged between the flexible circuit board 111 and the stamping part 1014 of the back panel 1011. The supporting foam 109 can provide stable support for the flexible circuit board 111 when the temperature in the accommodation space formed by the injection molding part 1013 of the back panel 1011 and the stamping part 1014 of the back panel 1011 changes.
[0065] For example, as shown in FIG2A , a light guide plate 1027 is provided between the stamped portion 1014 of the back panel 1011 and the diffuser 1021 , and a reflective sheet 110 is provided between the light guide plate 1027 and the stamped portion 1014 of the back panel 1011 . The reflective sheet 110 can reflect the light incident thereon so that more light reaches the display panel.
[0066] For example, as shown in Figure 2A, the back panel 1011 also includes a side panel 1015, which is integrally formed with the bottom panel 1012. The side panel 1015 includes the above-mentioned stamping part 1014 and the injection molding part 1013. The stamping part 1014 includes four bending portions 1014a. The four bending portions 1014a enable the stamping part 1014 to have a portion protruding toward the side away from the injection molding part 1013. The protruding portion enables the above-mentioned accommodating space to be formed between the injection molding part 1013 and the stamping part 1014.
[0067] For example, as shown in FIG2A , a platform portion 1014b is provided between the two bent portions 1014a of the stamped portion 1014 close to the diffuser plate 1021, and the above-mentioned light guide plate 1027 is provided on the platform portion 1014b. The platform portion 1014b formed by the stamping can provide stable support for structures such as the light guide plate 1027 and ensure a certain supporting strength.
[0068] For example, FIG2B is a schematic cross-sectional view of the connection between the stamping portion and the injection molding portion according to at least one embodiment of the present disclosure. As shown in FIG2A and FIG2B , a curved bevel 1014c is provided between two bent portions 1014a of the stamping portion 1014 away from the diffuser plate 1021. The injection molding portion 1013 is provided with a textured pattern 1016 on the surface that interfaces with the curved bevel 1014c. This textured pattern 1016 ensures a higher bonding strength between the injection molding portion 1013 and the stamping portion 1014, thereby further enhancing the waterproof performance of the waterproof display device 100.
[0069] For example, as shown in Figure 2B, the injection molded part 1013 includes a first part 1013a arranged parallel to the bending slope 1014c, and a second part 1013b connected to the first part 1013a. The first part 1013a and the second part 1013b are connected by a thin wall, and the thickness of the thin wall is 0.05mm to 0.2mm. For example, the thickness of the thin wall is 0.1mm to ensure that the bending of the injection molded part 1013 can be achieved at the thin wall.
[0070] For example, Figure 3 is a schematic diagram of the cross-sectional structure of a support structure provided by at least one embodiment of the present disclosure. Combined with Figure 1 and Figure 3, the support structure 103 includes a support body 1034 in contact with the diffuser plate 1021, a first base 1032 and a second base 1033, the first base 1032 includes a cylindrical portion 1032a connected to the support body 1034 and a first support seat 1032b parallel to the bottom plate 1012, the second base 1033 includes a second support seat 1033a parallel to the bottom plate 1012, the first support seat 1032b is farther away from the diffuser plate 1021 than the second support seat 1033a, the second support seat 1033a includes a through hole, the cylindrical portion 1032a passes through the through hole to be connected to the support body 1034; the first elastic component 1031 is arranged on the outside of the cylindrical portion 1032a, the first end of the first elastic component 1031 is connected to the support body 1034, and the second end of the first elastic component 1031 is connected to the second support seat 1033a. For example, the support body 1034 may be a nail-shaped structure whose size gradually increases from a position away from the diffuser plate 1021 to a position closer to the diffuser plate 1021. The first support base 1032b and the second support base 1033a are both plate-shaped structures, and the first support base 1032b and the second support base 1033a are parallel to each other. The first elastic member 1031 may be a freely retractable spring, etc.
[0071] For example, the support body 1034 is connected to the first base 1032 by secondary injection molding or snap connection, the first elastic component 1031 and the second base 1033 are located in the middle position, the cylindrical part 1032a of the first base 1032 passes through the circular hole of the second base 1033, and can move up and down under the action of the first elastic component 1031.
[0072] For example, Figure 4 is a schematic diagram of the cross-sectional structure of a base plate and a support structure provided in at least one embodiment of the present disclosure. In combination with Figures 1 and 4, the base plate 1012 includes a raised portion 1012a protruding toward a side away from the diffuser plate 1021, and the two ends of the second support seat 1033a are overlapped on both sides of the corresponding raised portion 1012a of the base plate 1012 to form a first cavity structure 1012b. The first support seat 1032b is in the first cavity structure 1012b, so that when the external environment applies pressure to the diffuser plate 1021, the support structure 103 has space to move.
[0073] For example, as shown in Figure 4, the maximum dimension of the planar shape of the raised portion 1012a is smaller than the maximum dimension of the planar shape of the second support seat 1033a, so that the two ends of the second support seat 1033a can be overlapped on both sides of the corresponding raised portion 1012a of the base plate 1012 to form a first cavity structure 1012b, so as to facilitate the installation of the support structure 103, that is, to ensure that the support structure 103 is fixed above the raised portion 1012a through the second support seat 1033a, so as to play the role of supporting the diffuser plate 1021.
[0074] For example, in one example, an opening is provided at the bottom of the raised portion 1012a, and the minimum size of the opening is 0.5 mm to 1 mm larger than the maximum size of the first support seat 1032b, so as to ensure that when the first support seat 1032b moves to the bottom of the raised portion 1012a, it can effectively reduce the temperature inside the pressure regulating structure 104, and ensure that when the temperature inside the waterproof display device 100 rises to a certain level, heat can continue to enter the pressure regulating structure 104.
[0075] For example, the depth of the first cavity structure 1012b is consistent with the maximum movable stroke of the first support base 1032b, so that the movement of the first support base 1032b in the first cavity structure 1012b is not hindered.
[0076] For example, in one example, the second base 1033 may also be a part of the bottom plate 1012 , and a plurality of raised portions 1012 a may be provided on the bottom plate 1012 .
[0077] For example, Figure 5 is a schematic cross-sectional structure diagram of an overall pressure regulating structure and a support structure provided in at least one embodiment of the present disclosure, and Figure 6 is a schematic three-dimensional structure diagram of an overall pressure regulating structure and a support structure provided in at least one embodiment of the present disclosure. In combination with Figures 1, 5 and 6, the pressure regulating structure 104 is arranged on the other side of the raised portion 1012a, and the pressure regulating structure 104 is arranged opposite to the support structure 103. The pressure regulating structure 104 includes a shell structure 1042 and a waterproof elastic layer 1043 arranged on the inner side of the shell structure 1042. The waterproof elastic layer 1043 and the raised portion 1012a form a second cavity structure 1044, which is a sealed cavity. The second elastic component 1041 is arranged in the second cavity structure 1044. The first end of the second elastic component 1041 is connected to the surface of the raised portion 1012a away from the diffuser plate 1021, and the second end of the second elastic component 1041 is connected to the surface of the waterproof elastic layer 1043 away from the diffuser plate 1021. For example, the second end of the second elastic component 1041 is connected to the surface of the waterproof elastic layer 1043 away from the diffuser plate 1021 by a fixing screw. This waterproof elastic layer 1043 not only prevents loosening and debonding between the components, thereby damaging the waterproof performance, that is, preventing water from entering the second cavity structure 1044, but also drives the expansion and contraction of the second elastic component 1041 to change the accommodation space of the waterproof elastic layer 1043, thereby adjusting the internal and external pressures of the second cavity structure 1044, thereby achieving a balance between the external and internal pressures of the entire waterproof display device 100.
[0078] For example, as shown in FIG. 5 and FIG. 6 , there is a gap between the waterproof elastic layer 1043 and the shell structure 1042 , and the gap provides a condition for the accommodation space of the waterproof elastic layer 1043 to be flexible.
[0079] For example, as shown in Figures 5 and 6, the housing structure 1042 includes an outer housing 1042a and an inner housing 1042b, with at least a portion of the inner housing 1042b located within the outer housing 1042a. The inner housing 1042b extends in the direction of extension of the second elastic member 1041. For example, the inner housing 1042b includes two oppositely disposed portions, and the inner housing 1042b extends in a vertical direction. One end of the inner housing 1042b is connected to both sides of the raised portion 1012a, and the other end of the inner housing 1042b is connected to the ends of the outer housing 1042a. For example, the other end of the inner housing 1042b and the ends of the outer housing 1042a can be connected by welding. The outer housing 1042a is located outside the inner housing 1042b, and the outer housing 1042a, the inner housing 1042b, and the raised portion 1012a form a space for accommodating the waterproof elastic layer 1043 and the second elastic member 1041.
[0080] For example, as shown in FIG5 and FIG6, the fixing screws in the pressure adjustment structure 104 are located inside the inner housing 1042b so that the fixing screws are not in contact with the outside, thereby further ensuring the waterproof performance of the waterproof display device 100.
[0081] For example, in one example, a bridge structure is provided at the bottom of the raised portion 1012 a to serve as a location for fixing the second elastic component 1041 .
[0082] For example, the second elastic component 1041 is a memory spring made of a memory alloy wire. The second elastic component 1041 utilizes the two-way memory effect of the shape memory alloy. As the temperature changes, the second elastic component 1041 will actively extend or contract without being affected by other external factors.
[0083] For example, the support structure 103 cooperates with the pressure regulating structure 104 to realize the linkage recognition of temperature and water pressure changes, automatically control the internal pressure of the waterproof display device 100, and ensure that the waterproof performance of the waterproof display device 100 remains in the optimal state.
[0084] For example, Figure 7 is a schematic diagram of the planar structure of the outer surface of a waterproof display device provided by at least one embodiment of the present disclosure. As shown in Figure 7, six pressure adjustment structures 104 can be seen on the outer surface of the waterproof display device 100. The six pressure adjustment structures 104 include three pairs of pressure adjustment structures 104, and each pair of pressure adjustment structures 104 includes two pressure adjustment structures 104 arranged opposite to each other.
[0085] For example, in one example, it is assumed that the volume of the air enclosed in the internal environment of the waterproof display device 100 is 22.46*10 6 mm 3 According to the law of thermal expansion of gases, when the pressure remains constant, its volume V changes linearly with the temperature t, that is: V = V0 (1 + avt)
[0086] Among them, av is the volume expansion coefficient of the gas when the pressure remains unchanged, and the av of the gas is ≈ 1 / 273.15°.
[0087] When the temperature inside the sealed waterproof display device increases from room temperature 25°C to 50°C, the volume of the air enclosed in the internal environment increases: V1 = V0 (1 + 50 / 273.15) - V0 (1 + 25 / 273.15) = 2.06*10 6 mm 3 .
[0088] For example, in one example, the specifications of the pressure regulating structure 104 are designed as follows: inner diameter 80 mm, height 70 mm, that is, the volume inside the pressure regulating structure is: V2 = 0.25*10 6 mm 3 =πr 2 =3.14*40*40*70mm 3
[0089] The number of pressure regulating structures 104 used is: 6 ≈ V1 / V2 = 2.06 x 10 6 / 0.25x 10 6 mm 3 .
[0090] For example, in one example, the waterproof display device 100 also includes an aggregate plate 115 formed by a conversion plate, a common plate, a power supply plate and a main board. The aggregate plate 115 is arranged in the middle of the back plate 1011 and close to the upper edge, and is fixed on a heat sink (not shown). As shown in FIG7 , a waterproof shell 112 is provided on the outer surface of the aggregate plate 115, and a plurality of pressure regulating structures 104 extend outside the waterproof shell 112. A heat sink is provided between the waterproof shell 112 and the aggregate plate, and the heat sink is in direct contact with the back plate 1011 and the waterproof shell 112, so that the heat can be released in a timely manner.
[0091] For example, as shown in Figure 7, the fixing screws of the waterproof shell 112 are arranged on the outside of the waterproof shell 112, and the waterproof shell 112 and the back plate 1011 are fixed by a hole-free connection structure. This can further prevent external water from entering the interior of the waterproof display device when the waterproof display device is performing underwater operations or wading operations. In addition, it is also convenient for subsequent maintenance and other operations.
[0092] For example, in one example, an integrated wiring harness such as a power line and a signal line is connected to an external device through a wire outlet of the waterproof housing 112 , and the wire outlet also adopts a waterproof structure to further ensure the waterproof performance of the waterproof display device.
[0093] For example, in one example, the light bar wire outlet holes are concentrated in the middle of the waterproof display device near the upper edge so as to be centrally fixed inside the waterproof housing 112 .
[0094] For example, in one embodiment, a flat flexible cable (FFC) passes through the bent side of the back plate 1011 and enters the inner side of the back plate 1011 , then merges with the light bar line and enters the waterproof housing 112 through the outlet hole.
[0095] For example, Figures 8 to 10 are schematic cross-sectional views of a structure of a hole-free connection from a non-connected state to a connected state provided by at least one embodiment of the present disclosure. As shown in Figure 1 and Figures 8 to 10, the hole-free connection structure 201 includes: a cavity 2011 arranged on the back plate 1011, the cavity 2011 is a conical cavity structure punched out in the opposite direction from the top of the raised portion 1012a, a screw shaft 2012 that can be inserted into the cavity 2011, a screw housing 2013 and a nut 2014 on both sides of the screw shaft 2012 are fixed, and a thread 2015 is provided on the side of the end of the screw shaft 2012 away from the cavity 2011. The screw shaft 2012 can be fixed by connecting the nut 2014 and the thread 2015, so that a hole-free connection can be achieved to reduce the risk of water entering the waterproof display device.
[0096] For example, the nut 2014 is a special connection nut without holes, the screw housing 2013 is a special screw housing without holes, and the screw shaft is a special screw shaft without holes.
[0097] For example, in FIG8 , the screw shaft 2012 is not inserted into the cavity 2011, the screw housing 2013 does not secure the two sides of the screw shaft 2012, and the nut 2014 and the thread 2015 are not connected. In FIG9 , the screw shaft 2012 is inserted into the cavity 2011, the screw housing 2013 secures the two sides of the screw shaft 2012, and the nut 2014 and the thread 2015 are not connected. In FIG10 , the screw shaft 2012 is inserted into the cavity 2011, the screw housing 2013 secures the two sides of the screw shaft 2012, and the screw shaft 2012 moves upward, the cone expands the screw housing 2013, and the screw housing 2013 is pressed against the sidewall of the tapered cavity structure of the back plate 1011. Then, the nut 2014 and the thread 2015 are connected to achieve the fixation of the hole-free connection structure.
[0098] For example, in one example, the waterproof display device 100 also includes a circuit board and external wiring, and the circuit board and external wiring are connected to the back panel 1011 through a quick-card non-porous connection structure, thereby further preventing external water from entering the interior of the waterproof display device when the waterproof display device is performing underwater or wading operations.
[0099] For example, Figures 11 to 13 are schematic cross-sectional structural diagrams of a quick-card type hole-free connection structure provided by at least one embodiment of the present disclosure from a non-connected state to a connected state. Combined with Figure 1 and Figures 11 to 13, the quick-card type hole-free connection structure 301 includes: a cavity 3011 arranged on the back plate 1011, a screw shaft 3012 that can be inserted into the cavity 3011, and screw housings 3013 for fixing both sides of the screw shaft 3012. A fixing member 3014 is provided on the side of the end of the screw shaft 3012 away from the cavity 3011, and the screw shaft 3012 can be fixed by connecting the fixing member 3014 and the screw housing 3013.
[0100] For example, the screw housing 3013 is a special screw housing without holes, and the screw shaft 3012 is a special screw shaft without holes.
[0101] For example, in Figure 11, the screw shaft 3012 is not inserted into the cavity 3011, and the screw housing 3013 does not secure the two sides of the screw shaft 3012. In Figure 12, the screw shaft 3012 is inserted into the cavity 3011, and the screw housing 3013 is pressed downward, supporting the specially designed non-porous connection screw shaft 3012 at the bottom of the cavity 3011. In Figure 13, the top end is inverted to secure the screw shaft 3012, and the screw housing 3013 moves downward, the cone-shaped body expands the screw housing 3013, and the screw housing 3013 is pressed against the sidewalls of the tapered cavity structure of the back plate 1011 to achieve the fixation of the non-porous connection structure.
[0102] For example, as shown in FIG7 , the handle 113 and the connection hole 114 of the waterproof display device 100 are both connected using the above-mentioned non-porous connection structure.
[0103] For example, Figure 14 is a schematic diagram of the cross-sectional structure of the waterproof shell and nano waterproof rubber pad provided in at least one embodiment of the present disclosure. A nano waterproof rubber pad 113 is arranged between the waterproof shell 112 and the back plate 1011. The nano waterproof rubber pad 113 can increase the tightness to further prevent water from entering the waterproof display device 100.
[0104] For example, as shown in Figure 14, the nano waterproof rubber pad 113 includes a plurality of protruding structures 114, and the waterproof shell 112 includes a plurality of grooves 115. The plurality of protruding structures 114 are respectively inserted into the plurality of grooves 115 to fix the waterproof shell 112 to the nano waterproof rubber pad 113. It should be noted that although three grooves 115 and three protruding structures 114 are set in Figure 14, the embodiments of the present disclosure are not limited to this. In different design scenarios, other numbers of grooves 115 and protruding structures 114 can also be set.
[0105] For example, Figure 15 is a schematic diagram of the cross-sectional structure of a waterproof shell and a wire outlet provided by at least one embodiment of the present disclosure. As shown in Figure 15, the power line, light strip line, signal line, split-screen control line and infrared probe line can be concentrated into a single wire harness 116, which is located at the position of the wire outlet 117 corresponding to the waterproof shell 112 and pulled out from the wire outlet 117 of the waterproof shell 112. A nano-waterproof rubber ring 118 is provided on the outside of the single wire harness 116, and the nano-waterproof rubber ring 118 is fixed to the wire outlet 117 by screws 119 to ensure that the nano-waterproof rubber ring 118 and the wire outlet 117 can fit tightly. The nano-waterproof rubber ring 118 is arranged around the wire outlet 117 in a whole circle to further prevent water from entering the waterproof display device.
[0106] For example, as shown in FIG15 , the fixing screw holes of the nano waterproof rubber ring 118 and the wire outlet hole 117 are arranged on the outside of the waterproof shell 112 , which can facilitate subsequent maintenance work and can also be replaced in time when the waterproof effect of the nano waterproof rubber ring 118 deteriorates.
[0107] For example, as shown in Figure 15, the mating surface between the nano waterproof rubber ring 118 and the waterproof shell 112 is designed to be an inclined surface. For example, in Figure 15, the plane shown by AB is an inclined surface, and the inclination angle of the inclined surface relative to the horizontal plane is 3° to 5°. For example, the mating surface of the waterproof shell 112 that cooperates with the nano waterproof rubber ring 118 is also designed to be the same inclined surface, and its inclination angle relative to the horizontal plane is 3° to 5°. In this way, the nano waterproof rubber ring 118 can fit more closely with the waterproof shell 112, so as to further improve the waterproofness of the waterproof display device.
[0108] For example, when the screw 119 fixes the integrally formed single wire harness 116 to the waterproof housing 112 , the inclined surfaces fit tightly under the extrusion force, further reducing the risk of external water penetrating into the waterproof display device.
[0109] For example, Figure 16 is a schematic diagram of the cross-sectional structure of a fixing screw hole and a wire outlet hole provided in at least one embodiment of the present disclosure. In combination with Figures 15 and 16, the fixing screw hole 120 of the nano waterproof rubber ring 118 and the wire outlet hole 117 is designed on the outside of the waterproof shell 112, and the fixing screw hole 120 is designed as a blind hole to ensure that there is no risk of water leakage in the screw hole 120.
[0110] For example, as shown in FIG16 , a metal threaded sleeve 121 is heat-insulated in the blind hole. The metal threaded sleeve 121 can ensure the fixing strength of the blind hole and further prevent the risk of water seepage in the blind hole.
[0111] For example, the waterproof display device provided in at least one embodiment of the present disclosure can be any product or component with a display function, such as a display, an OLED panel, an OLED TV, an electronic paper, a mobile phone, a tablet computer, a laptop computer, a digital photo frame, or a navigator.
[0112] For example, at least one embodiment of the present disclosure further provides a spliced display device, which is formed by splicing together multiple waterproof display devices as described in any of the above embodiments. For example, Figure 17 is a schematic planar structural diagram of a spliced display device provided by at least one embodiment of the present disclosure. As shown in Figure 17, the spliced display device 200 includes multiple waterproof display devices 100 provided by any of the above embodiments. Although Figure 17 shows that the spliced display device 200 includes a spliced display device 200 formed by splicing together 9 waterproof display devices 100, the embodiments of the present disclosure are not limited to this, and may also include other numbers of spliced display devices 200, for example, 2, 4, 6, 12, etc.
[0113] The waterproof display device and spliced display device provided by at least one embodiment of the present disclosure have at least one of the following beneficial technical effects:
[0114] (1) At least one embodiment of the present disclosure provides a waterproof display device. When a display component included in the waterproof display device is subjected to pressure exerted by the external water environment underwater or thermally expands due to its own heat dissipation, the support structure will move with the expansion and contraction of the first elastic component to stably support the diffusion plate, so as to ensure that the OD value is within a certain range to ensure the uniformity of the display quality. At the same time, the size of the internal space of the pressure regulating structure can be adjusted by the expansion and contraction of the second elastic component included in the pressure regulating structure to achieve a balance between the internal and external pressures of the waterproof display device, that is, the pressure inside the waterproof display device is released while the waterproof display device is waterproof.
[0115] (2) At least one embodiment of the present disclosure provides a waterproof display device, wherein the bottom plate includes a raised portion protruding toward a side away from the diffuser plate, and two ends of the second support seat overlap the two sides of the corresponding raised portion of the bottom plate to form a first cavity structure. The first support seat is in the first cavity structure, so that when the external environment applies pressure to the diffuser plate, the support structure has space to move.
[0116] (3) In at least one embodiment of the present disclosure, a waterproof display device is provided, wherein an opening is provided at the bottom of the raised portion, and the minimum size of the opening is larger than the maximum size of the first support seat, so as to ensure that when the first support seat moves to the bottom of the raised portion, the temperature inside the pressure regulating structure can be effectively reduced, and when the temperature inside the waterproof display device rises to a certain level, heat can continue to enter the pressure regulating structure.
[0117] There are a few points to note:
[0118] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure. Other structures may refer to conventional designs.
[0119] (2) For the sake of clarity, in the drawings used to describe the embodiments of the present disclosure, the thickness of layers or regions is exaggerated or reduced, that is, these drawings are not drawn according to the actual scale.
[0120] (3) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to form new embodiments.
[0121] The above description is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. The protection scope of the present disclosure shall be based on the protection scope of the claims.
Claims
1. A waterproof display device, comprising: Backlight module and display component, wherein: The backlight module includes a back plate, and the back plate includes a bottom plate; The display component includes a diffusion plate, a support structure is arranged between the bottom plate and the diffusion plate, and a pressure regulating structure is arranged on a side of the support structure away from the diffusion plate; The supporting structure includes a first elastic component, and the supporting structure is configured to elastically support the diffusion plate. The pressure regulating structure includes a second elastic component, and the pressure regulating structure is configured to balance the pressure inside and outside the waterproof display device.
2. The waterproof display device according to claim 1, wherein: The support structure includes a support body in contact with the diffuser plate, a first base and a second base; The first base comprises a cylindrical portion connected to the supporting body and a first supporting seat parallel to the bottom plate; The second base comprises a second support seat parallel to the bottom plate, the first support seat is farther away from the diffuser plate than the second support seat, the second support seat comprises a through hole, the cylindrical portion passes through the through hole to be connected to the support body; The first elastic component is disposed on the outer side of the cylindrical portion, a first end of the first elastic component is connected to the supporting body, and a second end of the first elastic component is connected to the second supporting seat.
3. The waterproof display device according to claim 2, wherein: The base plate includes a raised portion protruding toward a side away from the diffuser plate, two ends of the second support seat overlap two sides of the base plate corresponding to the raised portion to form a first cavity structure, and the first support seat is in the first cavity structure.
4. The waterproof display device according to claim 3, wherein: The pressure regulating structure comprises a shell structure and a waterproof elastic layer arranged on the inner side of the shell structure, wherein the waterproof elastic layer and the convex portion form a second cavity structure, the second elastic component is arranged in the second cavity structure, and the first end of the second elastic component and the convex portion The second end of the second elastic component is connected to a surface of the waterproof elastic layer away from the diffusion plate, and the second end of the second elastic component is connected to a surface of the waterproof elastic layer away from the diffusion plate.
5. The waterproof display device according to claim 4, wherein: There is a gap between the waterproof elastic layer and the casing structure.
6. The waterproof display device according to claim 4 or 5, wherein: The housing structure comprises an outer housing and an inner housing, wherein the inner housing extends in the extension direction of the second elastic component, one end of the inner housing is connected to both sides of the protruding portion, and the other end of the inner housing is connected to the end of the outer housing; The outer shell is located outside the inner shell, and forms a space for accommodating the waterproof elastic layer and the second elastic component together with the inner shell and the convex portion.
7. The waterproof display device according to claim 6, wherein: The maximum dimension of the planar shape of the convex portion is smaller than the maximum dimension of the planar shape of the second supporting seat.
8. The waterproof display device according to claim 6, further comprising an assembly board formed by combining a conversion board, a common board, a power board and a main board, wherein: The assembly plate is arranged in the middle of the back plate and close to the upper edge.
9. The waterproof display device according to claim 6, further comprising a waterproof housing, wherein: The plurality of pressure regulating structures extend outside the waterproof shell, a heat sink is arranged between the waterproof shell and the assembly plate, and the heat sink is in direct contact with the back plate and the waterproof shell.
10. The waterproof display device according to claim 9, wherein: The fixing screws of the waterproof housing are arranged on the outside of the waterproof housing, and the waterproof housing and the back plate are fixed by a non-porous connection structure.
11. The waterproof display device according to claim 10, wherein: The hole-free connection structure includes: a cavity arranged on the back plate, a screw shaft that can be inserted into the cavity, a screw housing and a nut that fix both sides of the screw shaft, a thread is arranged on the side of the end of the screw shaft away from the cavity, and the connection structure between the nut and the thread is configured to fix the screw shaft.
12. The waterproof display device according to claim 9, further comprising a circuit board and external wiring, wherein: The circuit board and the external wiring are connected to the backplane via a quick-clip hole-free connection structure.
13. The waterproof display device according to claim 12, wherein: The quick-clip hole-free connection structure includes: a cavity arranged on the back plate, a screw shaft that can be inserted into the cavity, a screw shell that fixes both sides of the screw shaft, and a fixing piece arranged on the side of the end of the screw shaft away from the cavity, and the connection structure between the fixing piece and the screw shell is configured to fix the screw shaft.
14. The waterproof display device according to any one of claims 9 to 13, further comprising a power line and a signal line, wherein: The integrated wiring harness of the power line and the signal line is connected to an external device through the wire outlet hole of the waterproof housing, and the wire outlet hole adopts a waterproof structure.
15. The waterproof display device according to any one of claims 9 to 14, wherein: A nano waterproof rubber pad is arranged between the waterproof shell and the back plate.
16. The waterproof display device according to claim 15, wherein: The nano waterproof rubber pad includes a plurality of protruding structures, and the waterproof shell includes a plurality of grooves. The plurality of protruding structures are respectively inserted into the plurality of grooves to fix the waterproof shell and the nano waterproof rubber pad in connection.
17. The waterproof display device according to claim 16, wherein: The power line, light bar line, signal line, split-screen control line and infrared probe line are concentrated into a single wire harness. A nano waterproof rubber ring is arranged outside the single wire harness at the position corresponding to the wire outlet hole of the waterproof shell, and the nano waterproof rubber ring is fixed to the wire outlet hole by screws.
18. The waterproof display device according to claim 17, wherein: The nano waterproof rubber ring and the fixing screw holes of the wire outlet hole are arranged on the outside of the waterproof shell.
19. The waterproof display device according to claim 18, wherein: The matching surface between the nano waterproof rubber ring and the waterproof shell is designed to be an inclined surface, and the inclination angle of the inclined surface is 3 to 5 degrees.
20. The waterproof display device according to any one of claims 1 to 19, wherein: The second elastic component is a memory spring, and the material of the second elastic component is a memory alloy wire.
21. The waterproof display device according to any one of claims 1 to 20, further comprising a flexible circuit board, wherein: The back panel also includes a side panel, which is integrally formed with the bottom panel. The side panel includes a stamping part and an injection molding part. The stamping part includes four bending parts, and the accommodating space formed by the stamping part and the injection molding part is a fixing area of the flexible circuit board.
22. The waterproof display device according to claim 21, wherein: A platform portion is provided between the two bending portions of the punching portion close to the diffusion plate, and a light guide plate is provided on the platform portion.
23. The waterproof display device according to claim 21, wherein: A bending slope is provided between the two bending portions of the stamping portion away from the diffusion plate, and a texture pattern is provided on a surface of the injection molding portion combined with the bending slope.
24. The waterproof display device according to claim 23, wherein: The injection molding part includes a first part arranged parallel to the bending slope, and a second part connected to the first part. The first part and the second part are connected by a thin wall, and the thickness of the thin wall is 0.05mm-0.2mm.
25. The waterproof display device according to any one of claims 1 to 24, wherein: The display component further comprises a liquid crystal display panel, and the liquid crystal display panel and the end of the back plate are bonded by optical fixing adhesive.
26. A spliced display device, formed by splicing a plurality of waterproof display devices according to any one of claims 1 to 25.