Cabinet and tiled display device

Abstract

A cabinet and a spliced display device are provided. The cabinet is used for the spliced display device. The cabinet comprises a bottom plate (11) and a side wall (12) connected with the bottom plate (11). The side wall (12) is located at one side of the bottom plate (11) and is arranged along the edge of the bottom plate (11). A ventilation opening (13) is arranged on the bottom plate (11) and / or the side wall (12). A corresponding opening and closing structure (14) is arranged at the ventilation opening (13). The opening and closing structure (14) comprises a baffle assembly (141). The baffle assembly (141) is configured to open or close the corresponding ventilation opening (13).

Description

Technical Field

[0001] This disclosure relates to the field of display technology, specifically to a cabinet and a splicing display device. Background Technology

[0002] With the rapid development of display technology, splicing display devices have been used more and more widely in large venues such as shopping malls, cinemas, and stadiums. They not only solve the technical problems of high cost and difficult maintenance of single large screens, but also have extremely high scalability and can be used to display images of various sizes.

[0003] The splicing display device is formed by splicing together multiple sub-display panel components, which are supported by a housing. Summary of the Invention

[0004] This disclosure provides a cabinet and a splicing display device.

[0005] In a first aspect, embodiments of this disclosure provide a cabinet for splicing display devices, wherein the cabinet includes a base plate and a side wall connected to the base plate, the side wall being located on one side of the base plate and disposed along the edge of the base plate;

[0006] Ventilation openings are provided on the base plate and / or the side wall, and corresponding opening and closing structures are provided at the ventilation openings;

[0007] The opening and closing structure includes a baffle assembly configured to open or close the corresponding ventilation opening.

[0008] In some embodiments, the opening and closing structure further includes:

[0009] A first elastic component, connected to the baffle assembly, is configured to undergo elastic deformation and drive the baffle assembly to move relative to the corresponding vent, so as to open or close the corresponding vent.

[0010] In some embodiments, the first elastic component is directly connected to the baffle assembly, and the first elastic component is configured to drive the baffle assembly to move linearly in a direction parallel to the vent when elastic deformation occurs.

[0011] In some embodiments, the opening and closing structure further includes:

[0012] A guide rail is connected to the corresponding baffle assembly so that the baffle assembly can slide along the guide rail.

[0013] In some embodiments, the opening and closing structure has two guide rails, which are located on both sides of the corresponding baffle assembly and clamp the corresponding baffle assembly. The ventilation opening corresponding to the baffle assembly is located between the two guide rails.

[0014] In some embodiments, a vent is formed on the sidewall, and the baffle assembly corresponding to the vent on the sidewall is configured to be able to move linearly along a first direction, which is parallel to the corresponding vent and parallel to the base plate.

[0015] In some embodiments, the opening and closing structure further includes: a connecting portion;

[0016] The first elastic component is connected to the baffle assembly via the connecting part, and the connecting part is also rotatably connected to the housing;

[0017] The first elastic component is configured to drive the connecting portion and the baffle assembly to rotate when elastic deformation occurs.

[0018] In some embodiments, the connecting portion and the baffle assembly have a first angle, the first angle being between 100° and 160°.

[0019] In some embodiments, the connecting portion and the baffle assembly are integrated into a single structure.

[0020] In some embodiments, the first elastic component includes a first spring;

[0021] The first spring is made of a shape memory alloy and is configured to contract as the temperature rises.

[0022] In some embodiments, the base plate is provided with a plurality of support columns, which are configured to support sub-display panel assemblies.

[0023] In a second aspect, embodiments of this disclosure provide a splicing display device, comprising: a plurality of cabinets as described in the first aspect and a plurality of sub-display panel assemblies supported on the cabinets;

[0024] The sub-display panel assembly includes a display panel and a bracket, the bracket being used to support the display panel.

[0025] In some embodiments, the display panel includes a lamp board and a flexible circuit board, the flexible circuit board being located on the back side of the lamp board and connected to the lamp board, and a driving structure being provided on the flexible circuit board, the driving structure being located between the flexible circuit board and the lamp board;

[0026] The display panel further includes a heat dissipation structure located between the driving structure and the lamp board, and the heat dissipation structure is configured to dissipate heat from the driving structure.

[0027] In some embodiments, the heat dissipation structure includes a first heat dissipation layer and a second heat dissipation layer, wherein the first heat dissipation layer is located between the second heat dissipation layer and the driving structure.

[0028] The material of the first heat dissipation layer includes thermally conductive silicone grease, and the material of the second heat dissipation layer includes graphite.

[0029] In some embodiments, the display panel further includes a fixed heat-conducting structure configured to be fixed to the bracket;

[0030] The fixed heat-conducting structure has a groove corresponding to the position of the heat dissipation structure, and the heat dissipation structure is located in the groove.

[0031] In some embodiments, the bracket includes: a first plate and a second plate spaced apart in the normal direction of the display panel, a first side edge of the first plate and a first side edge of the second plate being connected by a third plate, a second side edge of the second plate and a second side edge of the second plate being connected by a fourth plate, the first side and the second side being opposite sides, and the first plate, the second plate, the third plate and the fourth plate forming a first ventilation channel;

[0032] The first ventilation channel extends in a direction parallel to the plane on which the display panel is located.

[0033] In some embodiments, the shape of the first cross section of the first plate is a square waveform;

[0034] The first cross-section of the second plate has a square waveform.

[0035] The first cross section is a cross section that is perpendicular to the plane where the third plate is located and parallel to the normal of the display panel.

[0036] In some embodiments, the bracket further includes a sliding connection structure;

[0037] The sliding connection structure is located within and adapted to the first ventilation channel, and the sliding connection structure is configured to move along the first ventilation channel and extend or retract within the first ventilation channel.

[0038] The sliding connection structure forms a second ventilation channel, and the extension direction of the second ventilation channel is parallel to the extension direction of the first ventilation channel.

[0039] In some embodiments, the bracket further includes at least one second elastic component.

[0040] One end of the second elastic component is fixed inside the first ventilation channel, and the other end is connected to the sliding connection structure;

[0041] The second elastic component is configured to undergo elastic deformation and drive the sliding connection structure to move along the first ventilation channel.

[0042] In some embodiments, the second elastic component includes a second spring made of a shape memory alloy, and the second spring undergoes tensile deformation as the temperature increases.

[0043] In some embodiments, the material of the sliding connection structure includes a thermally conductive material. Attached Figure Description

[0044] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0045] Figure 1a This is a schematic diagram of the structure of a box provided in an embodiment of the present disclosure.

[0046] Figure 1b This is a schematic diagram of another type of housing provided in an embodiment of this disclosure.

[0047] Figure 2 This is a partial structural diagram of a box provided in an embodiment of the present disclosure.

[0048] Figure 3a This is a schematic diagram of the first elastic component provided in an embodiment of the present disclosure in a stretched state.

[0049] Figure 3b This is a schematic diagram of the first elastic component provided in an embodiment of the present disclosure in a contracted state.

[0050] Figure 4 This is a schematic diagram of the structure of a splicing display device provided in an embodiment of this disclosure.

[0051] Figure 5 This is a schematic diagram of the structure of a bracket provided in an embodiment of the present disclosure.

[0052] Figure 6a This is a structural schematic diagram of a multi-sub-display panel assembly provided in related technologies.

[0053] Figure 6b This is a schematic diagram of another multi-sub-display panel assembly provided in the related art.

[0054] Figure 7aThis is a schematic diagram of the structure of a plurality of sub-display panel components provided in an embodiment of this disclosure.

[0055] Figure 7b This is a schematic diagram of another plurality of sub-display panel components provided in an embodiment of this disclosure.

[0056] Figure 8 This is a schematic diagram of another bracket provided in an embodiment of the present disclosure.

[0057] Figure 9 This is a schematic diagram of the structure of a display panel provided in an embodiment of the present disclosure. Detailed Implementation

[0058] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0059] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0060] Unless otherwise defined, the technical or scientific terms used in the embodiments of this disclosure should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0061] With the rapid development of display technology, splicing display devices have been used more and more widely in large venues such as shopping malls, cinemas, and stadiums. They not only solve the technical problems of high cost and difficult maintenance of single large screens, but also have extremely high scalability and can be used to display images of various sizes.

[0062] The aforementioned splicing display device includes multiple sub-display panel assemblies and a housing, with the housing supporting the sub-display panel assemblies. Each sub-display panel assembly includes a display panel and a bracket for supporting the display panel. The display panel includes at least a lamp board and a driving structure. The driving structure provides a driving signal to the lamp board, causing the red / green / blue light-emitting devices in the lamp board to emit light under the drive signal.

[0063] During the display process of the LED panel, on the one hand, since the driving structure mostly adopts constant current driving mode and the current is in the μA level, the driving structure heats up when the LED panel emits light. Especially when the LED panel displays a pure white image, the brightness of the LED panel is the highest, the driving current reaches its maximum value, and the heat also increases accordingly. On the other hand, the splicing display device includes multiple sub-display panel components, that is, multiple LED panels spliced ​​together. However, good air convection cannot be achieved in the splicing display device, resulting in poor heat dissipation of the LED panel.

[0064] Furthermore, in the light panel display state, especially when displaying a pure white image, the uneven temperature distribution inside the sub-display panel components leads to significant differences in the luminous efficiency of the red / green / blue light-emitting devices under the same driving current, resulting in a blue / white intermingling phenomenon on the pure white image, which affects the display effect.

[0065] To address at least one of the aforementioned technical problems, this disclosure provides a housing used in a splicing display device, configured to support multiple sub-display panel assemblies.

[0066] Figure 1a This is a schematic diagram of the structure of a box provided in an embodiment of the present disclosure. Figure 1b This is a schematic diagram of another type of housing provided in an embodiment of this disclosure. Figure 1a , Figure 1b As shown, the enclosure includes a base plate 11 and a side wall 12 connected to the base plate 11. The side wall 12 is located on one side of the base plate 11 and is disposed along the edge of the base plate 11. Ventilation openings 13 are provided on the base plate 11 and / or the side wall 12, and corresponding opening and closing structures 14 are provided at the ventilation openings 13. The opening and closing structure 14 includes a baffle assembly 141, which is configured to open or close the corresponding ventilation opening 13. Figure 1a The ventilation opening 13 shown is in the open state. Figure 1b The ventilation opening 13 shown is in the closed state.

[0067] The housing 1 provided in this embodiment is used in a splicing display device. It has ventilation openings 13 on the base plate 11 and / or side wall 12. When multiple sub-display panel components in the splicing display device are in display state, the opening and closing structure 14 opens the corresponding ventilation openings 13 to allow air circulation, thereby improving the uneven heat dissipation phenomenon in the splicing display device and further avoiding the problem of large differences in luminous efficiency of different color light-emitting devices due to uneven temperature distribution, thus improving the display effect of the splicing display device.

[0068] In some embodiments, such as Figure 1a , Figure 1b As shown, multiple support columns 15 are provided on the base plate 11, and the support columns 15 are configured to support the sub-display panel assembly. Since the support columns 15 have a certain height, there is a certain gap between the sub-display panel assembly and the base plate 11. Based on this, ventilation openings 13 are opened on the base plate 11 and / or side wall 12 of the housing 1 to facilitate air circulation.

[0069] In some embodiments, the opening and closing structure 14 further includes: a first elastic component 142, connected to the baffle component 141, configured to undergo elastic deformation and drive the baffle component 141 to move relative to the corresponding vent 13, so as to open or close the corresponding vent 13, thereby effectively dissipating heat from the multiple sub-display panel components supported on the housing 1 and improving the temperature uniformity within the splicing display device.

[0070] In some embodiments, such as Figure 1a , Figure 1b As shown, the first elastic component 142 is directly connected to the baffle assembly 141. The first elastic component 142 is configured to drive the baffle assembly 141 to move linearly in a direction parallel to the vent 13 when elastic deformation occurs, so as to open the corresponding vent 13.

[0071] Specifically, the opening / closing structure 14 further includes a guide rail (not shown in the figure) connected to the corresponding baffle assembly 141, allowing the baffle assembly 141 to slide along the guide rail. The opening / closing structure 14 has two guide rails, each located on both sides of the corresponding baffle assembly 141 and clamping the baffle assembly 141. The ventilation opening 13 corresponding to the baffle assembly 141 is located between the two guide rails. The guide rails limit the sliding trajectory of the baffle assembly 141, thereby opening or closing the corresponding ventilation opening 13 when the sliding position of the baffle assembly 141 changes.

[0072] In some embodiments, a vent 13 is formed on the side wall 12, and the baffle assembly 141 corresponding to the vent 13 on the side wall 12 is configured to be able to move linearly along a first direction, which is parallel to the corresponding vent 13 and parallel to the bottom plate 11.

[0073] It should be noted that the baffle assembly 141 is configured to move linearly along the first direction. This can be achieved by pulling the baffle assembly 141 in the first direction parallel to the vent 13 through the first elastic component 142 to open the vent 13; or by pushing the baffle assembly 141 in the opposite direction parallel to the first direction parallel to the vent 13 through the first elastic component 142 to open the vent 13. This embodiment does not limit the scope of the invention.

[0074] In addition, the baffle assembly 141 that moves linearly in the first direction can also be the baffle assembly 141 corresponding to the vent 13 on the base plate 11. That is to say, regardless of whether the vent 13 is located on the base plate 11 or the side wall 12, the baffle assembly 141 can be driven to move linearly in the first direction by the elastic deformation of the first elastic component 142, so as to control the opening and closing of the vent 13.

[0075] Figure 2 This is a partial structural diagram of a box provided in an embodiment of the present disclosure. In some embodiments, such as... Figure 2 As shown, the opening and closing structure 14 further includes: a connecting part 143, through which the first elastic component 142 is connected to the baffle assembly 141, and the connecting part 143 is also rotatably connected to the housing 1; the first elastic component 142 is configured to drive the connecting part 143 and the baffle assembly 141 to rotate when elastic deformation occurs, and during the rotation, the baffle assembly 141 gradually moves away from or closer to the housing 1 to open or close the ventilation opening 13. Figure 2 The direction indicated by the middle arrow is the ventilation direction when the vent is open.

[0076] In some embodiments, the connecting portion 143 and the baffle assembly 141 have a first angle α, which is between 100° and 160°. That is, the connecting portion 143 and the baffle assembly 141 form an obtuse angle so that when the connecting portion 143 rotates under the drive of the first elastic component 142, it can drive the baffle assembly 141 to rotate as well, so as to open or close the vent 13.

[0077] It is understood that, in one example, the connecting part 143 and the baffle assembly 141 may be integrated into one structure; in other examples, the connecting part 143 and the baffle assembly 141 may also be two independent structures connected by fasteners, and this disclosure does not limit this.

[0078] Figure 3a This is a schematic diagram of the first elastic component provided in an embodiment of this disclosure in a stretched state. Figure 3b A schematic diagram of the first elastic component in a contracted state provided in an embodiment of this disclosure. In some embodiments, such as... Figure 3a , Figure 3bAs shown, the first elastic component 142 includes a first spring; the material of the first spring includes a shape memory alloy, and the first spring is configured to contract and deform as the temperature rises.

[0079] Shape memory alloys are materials that exhibit shape memory effects through thermoelasticity and martensitic phase transformation and its inverse. These materials typically consist of at least two metallic components. Shape memory alloys possess two phases: a high-temperature austenitic phase and a low-temperature martensitic phase. By changing the temperature, the shape memory alloy can transform from one crystalline phase to another, and its volume changes accordingly during this phase transformation.

[0080] Due to the shape memory properties of shape memory alloys, in this embodiment, a first spring is formed using a shape memory alloy, which exhibits a reverse phase transformation process when the temperature rises, such as... Figure 3b As shown, as the temperature rises, the material's crystal phase transforms from martensite to austenite, resulting in volume shrinkage. Specifically, the first spring undergoes contraction deformation as the temperature rises, and the baffle assembly 141 moves under the tension generated by the deformation of the first spring to open the vent 13.

[0081] Based on this, in the enclosure 1 provided in this embodiment, the crystal phase of the material inside the first elastic component 142, i.e., the first spring, is changed by temperature changes, causing the first spring to undergo elastic deformation when the temperature rises. This elastic deformation generates a pushing or pulling force relative to the baffle assembly 141, allowing the baffle assembly 141 to control the opening and closing of multiple vents 13 located on the bottom wall and / or side wall 12 of the enclosure 1. Specifically, the baffle assembly 141 can move linearly along a direction parallel to the vents 13 under the action of the first spring; alternatively, it can be rotatably connected to the enclosure 1 via a connecting part 143, causing the connecting part 143 and the baffle assembly 141 to rotate under the action of the first spring, thereby opening or closing the vents 13. This solution enables automatic temperature control within the enclosure 1. When the temperature is low, the vents 13 are closed to prevent the splicing display device from being corroded by moisture and contaminated by dust; when the temperature is high, the vents 13 are open to prevent uneven image distribution on the sub-display panel assembly supported by the enclosure 1, thus improving the display effect of the splicing display device.

[0082] This disclosure also provides a splicing display device, including: a plurality of the above-mentioned cabinets 1 and a plurality of sub-display panel assemblies 2 supported on each cabinet 1.

[0083] Figure 4 This is a schematic diagram of the structure of a splicing display device provided in an embodiment of this disclosure, as shown below. Figure 4 As shown, the housing 1 supports multiple sub-display panel assemblies 2. Each sub-display panel assembly 2 includes a display panel 3 and a bracket 4. The bracket 4 is used to support the display panel 3. Figure 4 In the cabinet, a cabinet ventilation channel 10 is formed between the bottom plate 11 of the cabinet 1 and the sub-display panel assembly 2, and a first ventilation channel 41 is formed inside the bracket 4. The cabinet ventilation channel 10 and the first ventilation channel 41 can simultaneously carry out air convection to avoid the display panel 3 from overheating and causing uneven display.

[0084] Figure 5 This is a schematic diagram of the structure of a bracket provided in an embodiment of the present disclosure, as shown below. Figure 5 As shown, the bracket 4 includes: a first plate 4a and a second plate 4b spaced apart in the normal direction of the display panel 3. The first side edge of the first plate 4a and the first side edge of the second plate 4b are connected by a third plate 4c, and the second side edge of the second plate 4b is connected by a fourth plate 4d. The first side and the second side are opposite sides. The first plate 4a, the second plate 4b, the third plate 4c, and the fourth plate 4d form a first ventilation channel 41. The extending direction of the first ventilation channel 41 is parallel to the plane where the display panel 3 is located.

[0085] It should be understood that the extension direction of the first ventilation channel 41 being parallel to the plane where the display panel 3 is located means that the extension direction of the first ventilation channel 41 can be approximately parallel to the extension direction of the grid lines in the display panel 3, or approximately parallel to the extension direction of the data lines in the display panel 3. Specifically, it can be flexibly set according to the current environment of the splicing display device, and this is not limited in the embodiments disclosed herein.

[0086] Furthermore, since the housing 1 supports multiple sub-display panel assemblies 2, and these sub-display panel assemblies 2 are arranged in an array, the multiple brackets 4 are also arranged in an array. The extension direction of the first ventilation channel 41 formed inside the bracket 4 being parallel to the plane where the display panel 3 is located can also be understood as the extension direction of the first ventilation channel 41 being parallel to or intersecting with the extension direction of the housing ventilation channel 10 formed inside the housing 1. The aforementioned housing ventilation channel 10 is a ventilation channel formed by ventilation openings 13 opened on the opposite sidewall 12 of the housing 1; this is not limited in this embodiment.

[0087] In some embodiments, such as Figure 5 As shown, the first cross-section of the first plate 4a is a square wave shape; the first cross-section of the second plate 4b is a square wave shape; the first cross-section is a cross-section that is perpendicular to the plane where the third plate 4c is located and parallel to the normal of the display panel 3.

[0088] Figure 6a This is a structural diagram of a multi-sub-display panel assembly provided in related technologies. Figure 6bThis is a schematic diagram of another structure of multiple sub-display panel assemblies provided in related technologies. During the assembly of multiple sub-display panel assemblies, since there are no connecting parts between adjacent sub-display panel assemblies, problems can easily occur. Figure 6a The problem of the recessed display panel 3 shown in the diagram causes a dark gap between adjacent display panels; or, [the following occurs]. Figure 6b The inward retraction of the bracket 4 shown in the diagram causes instability in the splicing display device. Therefore, the bracket 4 provided in this embodiment further includes a sliding connection structure 43 to solve at least one of the aforementioned technical problems.

[0089] Optionally, Figure 7a This is a schematic diagram of the structure of a plurality of sub-display panel components provided in an embodiment of this disclosure. Figure 7b This is a schematic diagram of another plurality of sub-display panel components provided in an embodiment of this disclosure. Figure 8 This is a schematic diagram of another bracket structure provided in an embodiment of the present disclosure. In some embodiments, such as... Figure 7a , Figure 7b , Figure 8 As shown, the bracket 4 also includes a sliding connection structure 43; the sliding connection structure 43 is located within and adapted to the first ventilation channel 41, and is configured to move along the first ventilation channel 41 and extend or retract within the first ventilation channel 41. Figure 7a The sliding connection structure 43 shown is in the retracted state. Figure 7b The sliding connection structure 43 shown is in an extended state; the sliding connection structure 43 forms a second ventilation channel 42, and the extension direction of the second ventilation channel 42 is parallel to the extension direction of the first ventilation channel 41.

[0090] like Figure 7a , Figure 7b , Figure 8 As shown, the sliding connection structure 43 can extend or retract in the first ventilation channel 41. When it extends, the extended part enters the first ventilation channel 41 of the adjacent bracket 4. In other words, when the sliding connection structure 43 is extended, it can connect two adjacent brackets 4, thereby eliminating the dark gap between the display panels 3 carried by the two adjacent brackets 4, improving the display effect of the splicing display device, and ensuring the stability between multiple sub-display panel assemblies 2 in the splicing display device.

[0091] Meanwhile, the sliding connection structure 43 forms a second ventilation channel 42. When the sliding connection structure 43 is extended, two adjacent first ventilation channels 41 are connected through the second ventilation channel 42. The chimney effect can be used in the splicing display device to realize air convection between multiple sub-display panel components 2 for heat exchange, thereby improving the temperature uniformity of multiple sub-display panel components 2 in the splicing display device.

[0092] In order to improve the heat dissipation efficiency of multiple sub-display panel assemblies 2 in the splicing display device, the material of the sliding connection structure 43 includes thermally conductive materials, such as metal materials and alloy materials, which can provide sufficient rigidity to connect adjacent brackets and have good heat dissipation characteristics.

[0093] In some embodiments, such as Figure 7a , Figure 7b As shown, the bracket 4 further includes at least one second elastic component 44, one end of which is fixed inside the first ventilation channel 41 and the other end is connected to the sliding connection structure 43; the second elastic component 44 is configured to undergo elastic deformation and drive the sliding connection structure 43 to move along the first ventilation channel 41.

[0094] Optionally, the second elastic component 44 includes a second spring made of a shape memory alloy, which undergoes tensile deformation as the temperature rises. In other words, the second spring exhibits a positive phase transformation process as the temperature rises, meaning that the material transforms from austenite to martensite and expands in volume as the temperature increases.

[0095] Based on this, in the splicing display device provided in this embodiment, a second elastic component 44, i.e., a second spring, is provided on the bracket 4. The crystal phase of the material inside the second spring is changed by temperature changes, causing the second spring to undergo tensile deformation when the temperature rises. This deformation generates a thrust on the sliding connection structure 43, causing the sliding connection structure 43 to extend. Therefore, when the temperature rises, the second spring pushes the sliding connection structure 43, causing it to extend to connect adjacent brackets, forming a continuous ventilation channel. This improves the heat dissipation effect of the splicing display device while ensuring its stability.

[0096] Furthermore, the first elastic component 142 and the second elastic component 44 provided in this embodiment are both springs made of shape memory alloy material, which can undergo elastic deformation when the temperature rises to drive other structures to move. In other words, the first elastic component 142 and the second elastic component 44 are both driven by the heat energy generated in the splicing display device, without the need for other control devices, thus saving power consumption while achieving the driving function.

[0097] Figure 9This is a schematic diagram of the structure of a display panel provided in an embodiment of the present disclosure. In some embodiments, such as... Figure 9 As shown, the display panel 3 includes a lamp board 31, a flexible circuit board 32, a heat dissipation structure 33, and a driving structure 35.

[0098] A flexible circuit board 32 is located on the back side of the lamp board 31 and connected to the lamp board 31. A driving structure 35 is provided on the flexible circuit board 32, and the driving structure 35 is located between the flexible circuit board 32 and the lamp board 31. A heat dissipation structure 33 is located between the driving structure 35 and the lamp board 31, and the heat dissipation structure 33 is configured to dissipate heat from the driving structure 35. The back side of the lamp board 31 refers to the non-light-emitting side of the lamp board.

[0099] The splicing display device provided in this embodiment achieves air convection by opening the ventilation vent 13 on the housing 1; and heat dissipation structure 33 is provided between the driving structure 35 and the lamp board 31 to dissipate heat from the driving structure 35, thereby improving the heat dissipation effect of the sub-display panel assembly 2.

[0100] In one example, such as Figure 9 As shown, the flexible circuit board 32 may include a first flexible circuit board 321 and a second flexible circuit board 322. The first flexible circuit board 321 is connected to the lamp board 31, and the second flexible circuit board 322 is connected to the driving structure 35. The first flexible circuit board 321 and the second flexible circuit board 322 are connected by a connector 323, and the bracket 4 is connected to the first flexible circuit board 321 by an adhesive structure 36.

[0101] In some embodiments, such as Figure 9 As shown, the heat dissipation structure 33 includes a first heat dissipation layer 331 and a second heat dissipation layer 332. The first heat dissipation layer 331 is located between the second heat dissipation layer 332 and the driving structure 35. The material of the first heat dissipation layer 331 includes thermally conductive silicone grease, and the material of the second heat dissipation layer 332 includes graphite. Since the first heat dissipation layer 331, i.e., the thermally conductive silicone grease, covers the driving structure 35, and the second heat dissipation layer 332, i.e., the graphite, is located outside the first heat dissipation layer 331, and both the thermally conductive silicone grease and the graphite have good heat dissipation performance, the heat generated by the driving structure 35 can be quickly dissipated, avoiding the phenomenon of local heat generation of the display panel caused by the high heat generated at the driving structure 35, and improving the heat dissipation efficiency of the splicing display device.

[0102] In some embodiments, such as Figure 9As shown, the display panel 3 also includes a fixed heat-conducting structure 34, which is configured to be fixed to the bracket 4. The fixed heat-conducting structure 34 has a groove corresponding to the position of the heat dissipation structure 33, and the heat dissipation structure 33 is located in the groove. Optionally, the fixed heat-conducting structure 34 can be fixed to the bracket 4 by screws 37. The material of the fixed heat-conducting structure 34 can be metal, which also has good heat dissipation performance, capable of dissipating the heat transferred from the driving structure 35 to the heat dissipation structure 33, thus avoiding uneven display caused by excessively high local temperatures on the display panel 3.

[0103] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of this disclosure, and this disclosure is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and substance of this disclosure, and these modifications and improvements are also considered to be within the scope of protection of this disclosure.

Claims

1. A tiled display apparatus, wherein, The box comprises a bottom plate and a side wall connected to the bottom plate, the side wall is located at one side of the bottom plate and is arranged along the edge of the bottom plate; A ventilation opening is arranged on the bottom plate and / or the side wall, and a corresponding opening and closing structure is arranged at the ventilation opening; The opening and closing structure comprises a baffle assembly, which is configured to open or close the corresponding ventilation opening; The sub-display panel assembly comprises a display panel and a bracket for carrying the display panel; The bracket comprises a first plate and a second plate arranged in the normal direction of the display panel, a first side edge of the first plate and a first side edge of the second plate are connected by a third plate, a second side edge of the second plate and a second side edge of the second plate are connected by a fourth plate, the first side and the second side are opposite sides, and the first plate, the second plate, the third plate and the fourth plate form a first ventilation channel; the extension direction of the first ventilation channel is parallel to the plane in which the display panel is located; The bracket further comprises a sliding connection structure; the sliding connection structure is located in the first ventilation channel and is adapted to the first ventilation channel, and is configured to be able to move along the first ventilation channel and extend or retract in the first ventilation channel; the sliding connection structure forms a second ventilation channel, and the extension direction of the second ventilation channel is parallel to the extension direction of the first ventilation channel. The opening and closing structure further comprises:

2. The tiled display apparatus of claim 1, wherein, A first elastic component connected to the baffle assembly, configured to elastically deform and drive the baffle assembly to move relative to the corresponding ventilation opening to open or close the corresponding ventilation opening. The first elastic component is directly connected to the baffle assembly, and is configured to drive the baffle assembly to move linearly in a direction parallel to the ventilation opening when elastically deformed.

3. The tiled display apparatus of claim 2, wherein, The opening and closing structure further comprises:

4. The tiled display apparatus of claim 3, wherein, A guide rail connected to the corresponding baffle assembly for sliding movement of the baffle assembly along the guide rail. The number of guide rails in the opening and closing structure is two, and the two guide rails are located on both sides of the corresponding baffle assembly and clamp the corresponding baffle assembly, and the ventilation opening corresponding to the baffle assembly is located between the two guide rails.

5. The tiled display apparatus of claim 4, wherein, The side wall forms a ventilation opening, and the baffle assembly corresponding to the ventilation opening on the side wall is configured to move linearly in a first direction, and the first direction is parallel to the corresponding ventilation opening and parallel to the bottom plate.

6. The tiled display apparatus of claim 5, wherein, The opening and closing structure further comprises a connecting part; 7. The tiled display apparatus of claim 2, wherein, The first elastic component is connected to the baffle assembly through the connecting part, and the connecting part is further rotationally connected to the box; The first elastic component is configured to drive the connecting part and the baffle assembly to rotate when elastically deformed. The connecting part and the baffle assembly have a first angle therebetween, and the first angle is between 100° and 160°.

8. The tiled display apparatus of claim 7, wherein, The connecting part and the baffle assembly are integrated into one structure.

9. The tiled display apparatus of claim 7, wherein, The first elastic component comprises a first spring; 10. The tiled display apparatus of any of claims 2 to 9, wherein, ​ The material of the first spring comprises a shape memory alloy, and the first spring is configured to generate shrinkage deformation with temperature rise.

11. The tiled display apparatus of any of claims 1 to 9, wherein, The bottom plate is provided with a plurality of support columns configured to support the sub-display panel assembly.

12. The tiled display apparatus of claim 1, wherein, The display panel comprises a lamp plate and a flexible circuit board, the flexible circuit board is located at the back side of the lamp plate and connected with the lamp plate, the flexible circuit board is provided with a driving structure, and the driving structure is located between the flexible circuit board and the lamp plate. The display panel further comprises a heat dissipation structure located between the driving structure and the lamp plate, and the heat dissipation structure is configured to dissipate heat of the driving structure.

13. The tiled display apparatus of claim 12, wherein, The heat dissipation structure comprises a first heat dissipation layer and a second heat dissipation layer, the first heat dissipation layer is located between the second heat dissipation layer and the driving structure, The material of the first heat dissipation layer comprises a heat-conducting silicone grease, and the material of the second heat dissipation layer comprises graphite.

14. The tiled display apparatus of claim 12 or 13, wherein, The display panel further comprises a fixed heat-conducting structure configured to be fixed with the bracket. The fixed heat-conducting structure is provided with a groove corresponding to the position of the heat dissipation structure, and the heat dissipation structure is located in the groove.

15. The tiled display apparatus of claim 1, wherein, The shape of the first cross section of the first plate is square wave shape. The shape of the first cross section of the second plate is square wave shape. The first cross section is perpendicular to the plane where the third plate is located and parallel to the normal line of the display panel.

16. The tiled display apparatus of claim 1, wherein, The bracket further comprises at least one second elastic assembly, One end of the second elastic assembly is fixed to the inside of the first ventilation channel, and the other end is connected with the sliding connection structure. The second elastic assembly is configured to be able to generate elastic deformation and drive the sliding connection structure to move along the first ventilation channel.

17. The tiled display apparatus of claim 16, wherein, The material of the second elastic assembly comprises a second spring, and the material of the second spring comprises a shape memory alloy, and the second spring generates tensile deformation with temperature rise.

18. The tiled display apparatus of claim 16 or 17, wherein, The material of the sliding connection structure comprises a heat-conducting material.

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