Double-sided display device

Abstract

The invention discloses a double-sided display device which comprises a mounting base and a double-sided display unit. One side surface of the mounting base is a mounting surface, and is connected with a mounting frame on the mounting surface; the double-sided display unit is arranged in the mounting frame and comprises a first substrate, a second substrate and a heat dissipation cushion layer located between the first substrate and the second substrate, and a plurality of display light sources are arranged on the first substrate and the second substrate in an array mode; an air cooling heat dissipation channel is formed in the heat dissipation cushion layer in a full-length mode in the first direction, a liquid cooling heat dissipation channel is formed in the heat dissipation cushion layer in a full-length mode in the second direction, when the temperature of the heat dissipation cushion layer is lower than a first preset temperature, the liquid cooling heat dissipation channel is in a closed state, and when the temperature of the heat dissipation cushion layer is higher than the first preset temperature, the liquid cooling heat dissipation channel is in a through state. The defects that a double-sided display screen is large in thickness and complex in structure are effectively overcome, efficient heat dissipation is achieved, and meanwhile the operation energy consumption of the double-sided display equipment can be effectively reduced.

Description

Technical Field

[0001] This invention relates to the field of LED display technology, and more particularly to a double-sided display device. Background Technology

[0002] With the development of information display technology, LED display devices have been widely used in advertising, public information dissemination, traffic signs, and commercial displays due to their advantages such as high brightness, long lifespan, and fast response speed. Existing LED display devices are typically single-sided, but some application scenarios require double-sided displays, necessitating the installation of two separate display devices.

[0003] To meet the demand for bidirectional displays, existing technologies have developed double-sided display devices. A common approach involves mounting two single-sided LED displays back-to-back in the same housing, forming a double-sided display structure. While this method achieves double-sided display, it results in a thicker overall device, higher cost, and poor heat dissipation, hindering long-term stable operation. Alternatively, some solutions employ switching or flip-type display structures, allowing different display surfaces. However, this method cannot achieve simultaneous double-sided display and has a complex structure, limiting its practical applications. Furthermore, some technologies utilize transparent or light-transmitting displays, employing transparent substrates or transparent motors within the display structure to allow light to pass through to both sides, achieving a double-sided display effect. However, this approach suffers from insufficient brightness and interference between the displayed content on both sides, as the display units must balance light transmission and emission performance.

[0004] Therefore, existing double-sided display devices, while achieving double-sided display, still suffer from problems such as poor heat dissipation and insufficient display flexibility. Summary of the Invention

[0005] The purpose of this invention is to provide a dual-sided display device that solves the problems of poor heat dissipation performance and insufficient display flexibility in existing dual-sided display devices.

[0006] To achieve this objective, the present invention adopts the following technical solution: A double-sided display device, comprising: Mounting base, one side of which is a mounting surface, and a mounting frame is connected to the mounting surface; A dual-sided display unit is disposed in the mounting frame and includes a first substrate, a second substrate, and a heat dissipation pad layer located between the first substrate and the second substrate. Multiple display light sources are arranged in an array on both the first substrate and the second substrate. Located within the heat dissipation pad, a wind-cooled heat dissipation channel is formed along the first direction, and a liquid-cooled heat dissipation channel is formed along the second direction. When the temperature of the heat dissipation pad is lower than a first preset temperature, the liquid-cooled heat dissipation channel is in a closed state, and when the temperature of the heat dissipation pad is higher than the first preset temperature, the liquid-cooled heat dissipation channel is in a through state.

[0007] Optionally, the dual-sided display unit further includes an encapsulation layer disposed on the first substrate and the second substrate respectively, and a glass cover plate disposed on the encapsulation layer.

[0008] Optionally, multiple air-cooled heat dissipation channels are spaced apart along the second direction, with one end of each channel connected to the interior of the mounting base and the other end connected to the outside. The mounting base is equipped with an active fan, which is connected to an air duct. The air duct is connected to multiple air-cooling heat dissipation channels. When the temperature of the heat dissipation pad is higher than the second preset temperature, the active fan is activated; when the second preset temperature is lower than the second preset temperature.

[0009] Optionally, multiple liquid-cooled heat dissipation channels are spaced apart along the first direction. These liquid-cooled heat dissipation channels communicate with the air-cooled heat dissipation channels. Each liquid-cooled heat dissipation channel is filled with a liquid cooling medium. At the intersection of the liquid-cooled heat dissipation channel and the air-cooled heat dissipation channel, mounting holes are provided on the heat dissipation pad. Ventilation sections are provided within these mounting holes, and the ventilation sections include: A thermally conductive plug is disposed in the mounting hole. The two opposite sides of the thermally conductive plug are flush with the two sides of the heat dissipation pad layer, and the diameter of the middle part of the thermally conductive plug is smaller than the diameter of the two ends. An air-cooled pipe is inserted through the heat-conducting round plug, and both ends of the air-cooled pipe are connected to the air-cooling heat dissipation channels on both sides of the mounting hole.

[0010] Optionally, the thermally conductive plug is further provided with a liquid-passing section, which can connect or close the liquid cooling heat dissipation channels on both sides of the mounting hole.

[0011] Optionally, the liquid-passing section includes: A sealing sleeve is fitted over the middle of the heat-conducting circular plug, and both ends of the air-cooling pipe pass through the sealing sleeve. An annular flow groove is provided on the sealing sleeve. A sliding sleeve is fitted onto the heat-conducting round plug, and both ends of the sealing soft sleeve are fixedly connected to the sliding sleeve; A thermal expansion ring is fitted onto the thermally conductive plug and is located between the outer wall of the thermally conductive plug and the inner wall of the sealing sleeve. The thermally conductive plug, the sealing sleeve, and the sliding sleeves on both sides together enclose the thermal expansion ring inside.

[0012] Optionally, the bottom of the overflow groove is provided with sealing protrusions at intervals.

[0013] Optionally, the width of the flow groove is smaller than the diameter of the air-cooling pipe, and an annular through groove communicating with the flow groove is formed at the edge where the sealing sleeve fits against the air-cooling pipe.

[0014] Optionally, the mounting frame is provided with a liquid cooling pipe, which is connected to both ends of the plurality of liquid cooling heat dissipation channels to form a liquid cooling passage; the mounting base is provided with a liquid cooling circulation component, the liquid cooling pipe is connected to the liquid cooling circulation component, and the liquid cooling circulation component enables the liquid cooling medium in the liquid cooling passage to circulate.

[0015] Optionally, the mounting base may also include a power module and a control module. Both the power module and the control module are electrically connected to the first substrate and the second substrate, and transmit electrical signals and control signals to the first substrate and the second substrate, respectively.

[0016] Compared with the prior art, the present invention has the following beneficial effects: In a dual-sided display device provided by this invention, the dual-sided display unit can simultaneously display different content on both sides or display any one side individually. A combined heat dissipation network of air-cooled and liquid-cooled channels is formed inside the heat dissipation pad. The display light sources on the first and second substrates generate heat, which is conducted to the heat dissipation pad via the substrates. When the temperature of the heat dissipation pad does not exceed a first preset temperature, the liquid-cooled channels remain closed, and the system mainly relies on the air-cooled channels and the heat conduction of the heat dissipation pad itself for heat dissipation. When the temperature of the heat dissipation pad exceeds the first preset temperature, the liquid-cooled channels switch to a continuous state, establishing a liquid cooling circuit. The liquid flow carries away more heat, thereby enhancing heat dissipation. By arranging the first and second substrates on both sides of the heat dissipation pad and arraying display light sources on both sides, the same display device can achieve double-sided lighting and double-sided viewing, effectively avoiding the defects of double-sided displays being thicker and more complex in structure. At the same time, air-cooled heat dissipation channels and liquid-cooled heat dissipation channels are set inside the heat dissipation pad. Under low heat load, heat dissipation is mainly achieved by air cooling or natural convection, while under high heat load, liquid cooling is introduced, which greatly improves heat exchange efficiency. While achieving efficient heat dissipation, it can effectively reduce the system's operating energy consumption. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0019] Figure 1 This is a schematic diagram of the structure of a double-sided display device.

[0020] Figure 2 This is an exploded view of the structure of a double-sided display device.

[0021] Figure 3 This is a structural cross-sectional view of a double-sided display device.

[0022] Figure 4 This is a partial structural cross-sectional view of a double-sided display device.

[0023] Figure 5 for Figure 4 A magnified view of part A in the middle.

[0024] Figure 6 This is a schematic diagram of the ventilation section and the liquid passage section.

[0025] Figure 7 This is a cross-sectional view of the ventilation section and the liquid passage section.

[0026] Figure 8 This is an exploded view of the ventilation section and the liquid passage section.

[0027] Illustrations: 1. Mounting base; 11. Mounting frame; 12. Active fan; 13. Air duct; 14. Liquid cooling pipe; 15. Liquid cooling circulation component; 2. Dual-sided display unit; 21. Heat dissipation pad; 211. Air-cooled heat dissipation channel; 212. Liquid-cooled heat dissipation channel; 213. Mounting hole; 22. First substrate; 23. Second substrate; 24. Display light source; 25. Sealing layer; 26. Glass cover plate; 3. Ventilation section; 31. Thermally conductive plug; 32. Air-cooled pipe; 4. Liquid passage section; 41. Sealing sleeve; 411. Flow groove; 412. Sealing protrusion; 413. Annular through groove; 42. Sliding sleeve; 43. Thermal expansion ring. Detailed Implementation

[0028] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0029] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0030] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1-8 As shown, this embodiment of the invention provides a double-sided display device for scenarios requiring double-sided display, such as commercial displays and traffic signs. The aim is to provide a double-sided display device that can achieve stable double-sided display and has good heat dissipation performance.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, the double-sided display device includes a mounting base 1 and a double-sided display unit 2. One side of the mounting base 1 is a mounting surface, and a mounting frame 11 is connected to the mounting surface. The double-sided display unit 2 is disposed in the mounting frame 11 and includes a first substrate 22, a second substrate 23, and a heat dissipation pad 21 located between the first substrate 22 and the second substrate 23. Multiple display light sources 24 are arrayed on both the first substrate 22 and the second substrate 23. A wind-cooled heat dissipation channel 211 is formed along a first direction and a liquid-cooled heat dissipation channel 212 is formed along a second direction within the heat dissipation pad 21. When the temperature of the heat dissipation pad 21 is lower than a first preset temperature, the liquid-cooled heat dissipation channel 212 is in a closed state. When the temperature of the heat dissipation pad 21 is higher than the first preset temperature, the liquid-cooled heat dissipation channel 212 is in a through state.

[0033] Specifically, the mounting base 1 can be a metal mounting box, with one side serving as the mounting surface, on which the mounting frame 11 is fixedly connected. The mounting frame 11 can be a metal frame, used to limit, press, or snap-fit ​​the double-sided display unit 2, thereby forming an integrated display module. The double-sided display unit 2 is disposed within the mounting frame 11, and includes a heat dissipation pad 21 located in the middle. Display modules are respectively disposed on both sides of the heat dissipation pad 21. Each display module includes a substrate, an encapsulation layer 25, and a glass cover plate 26 arranged sequentially. Multiple display light sources 24 are arrayed on the substrate, and the encapsulation layer 25 encapsulates the multiple display light sources 24. The display light sources 24 can be LED beads, Mini / Micro LED packages, or other light-emitting devices, forming a double-sided visible pixel array.

[0034] The heat dissipation pad 21 has air-cooled heat dissipation channels 211 and liquid-cooled heat dissipation channels 212 formed vertically and horizontally, respectively, thus creating a combined heat dissipation network of air-cooled heat dissipation channels 211 and liquid-cooled heat dissipation channels 212 inside the heat dissipation pad 21. The heat dissipation pad 21 can be made of thermally conductive materials, such as thermally conductive silicone pads, thermally conductive elastomer composite sheets, thermally conductive ceramic composite materials, or metal-elastomer composite structures, to enhance the heat conduction efficiency from the display light source 24 to the channels. When the device is working, the display light source 24 on the first substrate 22 and the second substrate 23 generates heat, and the heat is conducted to the heat dissipation pad 21 through the substrates. When the temperature of the heat dissipation pad 21 does not exceed the first preset temperature, the liquid-cooled heat dissipation channel 212 remains closed, and the system mainly relies on the air-cooled heat dissipation channel 211 and the heat dissipation pad 21 itself for heat dissipation. When the temperature of the heat dissipation pad 21 exceeds the first preset temperature, the liquid-cooled heat dissipation channel 212 switches to a through state, the liquid cooling circuit is established, and the liquid flow carries away more heat, thereby enhancing heat dissipation. By arranging the first substrate 22 and the second substrate 23 on both sides of the heat dissipation pad 21, and arraying display light sources 24 on both sides, the same display device can achieve double-sided lighting and double-sided viewing, effectively avoiding the defects of double-sided display screens being thicker and more complex in structure. At the same time, air-cooled heat dissipation channels 211 and liquid-cooled heat dissipation channels 212 are set inside the heat dissipation pad 21. Under low heat load, heat dissipation is mainly achieved by air cooling or natural convection, while under high heat load, liquid cooling is introduced, which greatly improves heat exchange efficiency. While achieving efficient heat dissipation, it can effectively reduce the system's operating energy consumption.

[0035] Furthermore, multiple air-cooled heat dissipation channels 211 are spaced apart along the second direction. One end of each air-cooled heat dissipation channel 211 is connected to the interior of the mounting base 1, and the other end is connected to the outside. The air-cooled heat dissipation channel 211 is filled with liquid cooling medium. An active fan 12 is installed inside the mounting base 1. The active fan 12 is connected to a duct 13, and the duct 13 is connected to multiple air-cooled heat dissipation channels 211. When the temperature of the heat dissipation pad 21 is higher than the second preset temperature, the active fan 12 is activated. When the second preset temperature is lower than the second preset temperature, the active fan 12 is activated.

[0036] Specifically, multiple air-cooled heat dissipation channels 211 are spaced apart along a second direction, such as the width direction of the display panel, forming a parallel channel array to cover the main heat-generating areas of the dual-sided display unit 2. Each air-cooled heat dissipation channel 211 has a first end and a second end. The first end connects to the interior of the mounting base 1, and the second end connects to the outside, forming a through airflow path from the interior of the mounting base 1 to the outside, enabling natural convection heat dissipation. Simultaneously, an active fan 12 is installed inside the mounting base 1. The air outlet of the active fan 12 is connected to an air duct 13. The air duct 13 is connected to multiple air-cooled heat dissipation channels 211 through several branches to achieve parallel airflow and active air cooling. The multiple air-cooled heat dissipation channels 211 spaced apart along the second direction, combined with the air duct 13 for parallel airflow to multiple channels, create multiple through heat exchange paths in the heat dissipation pad 21, significantly reducing local hot spots and improving the temperature uniformity of the dual-sided display unit 2 under high brightness / high power conditions.

[0037] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, in one embodiment of the present invention, multiple liquid cooling heat dissipation channels 212 are spaced apart along a first direction. The liquid cooling heat dissipation channels 212 are connected to the air cooling heat dissipation channels 211. The liquid cooling heat dissipation channels 212 are filled with liquid cooling medium. At the intersection of the liquid cooling heat dissipation channels 212 and the air cooling heat dissipation channels 211, an installation hole 213 is opened on the heat dissipation pad 21. A ventilation part 3 is provided in the installation hole 213. The ventilation part 3 includes: a heat-conducting plug 31, which is disposed in the installation hole 213. The two opposite sides of the heat-conducting plug 31 are flush with the two sides of the heat dissipation pad 21, and the diameter of the middle part of the heat-conducting plug 31 is smaller than the diameter of the two ends; and an air-cooling pipe 32, which is inserted through the heat-conducting plug 31. The two ends of the air-cooling pipe 32 are connected to the air cooling heat dissipation channels 211 on both sides of the installation hole 213.

[0038] Specifically, multiple liquid-cooled heat dissipation channels 212 are spaced apart along the first direction within the heat dissipation pad 21. Each liquid-cooled heat dissipation channel 212 extends continuously to cover the main heat-generating areas of the dual-sided display unit 2. The liquid-cooled heat dissipation channels 212 and the air-cooled heat dissipation channels 211 are arranged in an alternating pattern within the heat dissipation pad 21 to form a heat dissipation network. Connecting nodes are constructed at their intersections. At each intersection, a mounting hole 213 is formed on the heat dissipation pad 21, and the mounting hole 213 extends along the thickness direction of the heat dissipation pad 21.

[0039] A ventilation section 3 is provided within the mounting hole 213. The ventilation section 3 includes a thermally conductive plug 31 and an air-cooling pipe 32. The thermally conductive plug 31 is embedded in the mounting hole 213. The two opposite sides of the thermally conductive plug 31 are flush with the two sides of the heat dissipation pad 21, which facilitates close contact with the first substrate 22 and the second substrate 23 and reduces interfacial thermal resistance. The diameter of the middle part of the thermally conductive plug 31 is smaller than the diameters at both ends, so that it forms a circumferential space for medium heat exchange / flow buffering within the mounting hole 213. The thermally conductive plug 31 can be made of copper, aluminum, thermally conductive ceramics, or high thermal conductivity composite materials. The air-cooling pipe 32 is inserted through the thermally conductive plug 31 along the axial direction of the mounting hole 213. The two ends of the air-cooling pipe 32 are connected to the air-cooling heat dissipation channels 211 on both sides of the mounting hole 213, so that the air-cooling heat dissipation channels 211 remain continuous when passing through the intersection node, thereby achieving air-cooling heat dissipation at all times.

[0040] like Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, in one embodiment of the present invention, the heat-conducting plug 31 is also provided with a liquid-passing part 4, which can connect or close the liquid cooling heat dissipation channels 212 on both sides of the mounting hole 213.

[0041] Specifically, the liquid-passing section 4 is disposed on the heat-conducting plug 31 and located in the annular gap region between the heat-conducting plug 31 and the wall of the mounting hole 213. The liquid-passing section 4 can form a flow path through which the liquid cooling medium can pass, allowing the liquid cooling heat dissipation channels 212 on both sides of the mounting hole 213 to communicate with each other, and the liquid cooling medium can flow continuously across the intersection node; the liquid-passing section 4 can also block the flow path of the liquid cooling heat dissipation channel 212, so that the liquid cooling heat dissipation channels 212 on both sides of the mounting hole 213 are isolated from each other at the node, and the liquid cooling medium cannot cross the node. For example, the liquid-passing section 4 includes a sealing element and an opening and closing element. The sealing element can be an elastic sealing ring, a sealing gasket, etc., disposed on the outer periphery of the heat-conducting plug 31, and used to fit against the wall of the mounting hole 213 in the closed state to achieve liquid path sealing; the opening and closing element can be a sliding sleeve, a rotary valve sleeve, or a deformable valve diaphragm, and used to form a liquid-passing gap or liquid-passing window in the sealed area in the through state. By integrating the liquid passage 4 on the thermally conductive plug 31, the liquid cooling heat dissipation channel 212 can be connected or closed at the node, thereby achieving liquid circuit closure under low heat load, which can reduce liquid circulation, reduce energy consumption and maintenance risks, and liquid circuit continuity under high heat load, establishing a continuous liquid cooling path, improving heat dissipation efficiency, and facilitating the closure of the liquid circuit during transportation, idle, low temperature or abnormal operating conditions, reducing the risk of leakage caused by long-term flow of liquid cooling medium at the node.

[0042] Furthermore, the liquid-passing section 4 includes a sealing sleeve 41, a sliding sleeve 42, and a thermal expansion ring 43. The sealing sleeve 41 is fitted onto the middle of the heat-conducting circular plug 31, and both ends of the air-cooling pipe 32 pass through the sealing sleeve 41. An annular flow groove 411 is provided on the sealing sleeve 41. The sliding sleeve 42 is fitted onto the heat-conducting circular plug 31, and both ends of the sealing sleeve 41 are fixedly connected to the sliding sleeve 42. The thermal expansion ring 43 is fitted onto the heat-conducting circular plug 31 and is located between the outer wall of the heat-conducting circular plug 31 and the inner wall of the sealing sleeve 41. The heat-conducting circular plug 31, the sealing sleeve 41, and the sliding sleeves 42 on both sides together surround the thermal expansion ring 43 inside.

[0043] Specifically, the sealing sleeve 41 is fitted around the outer periphery of the center of the heat-conducting plug 31. The sealing sleeve 41 is made of an elastic material, such as silicone rubber, fluororubber, or an elastomer resistant to liquid cooling media. Both ends of the air-cooling pipe 32 pass through the sealing sleeve 41, forming a sealed fit against the outer wall of the air-cooling pipe 32 to prevent liquid cooling media from entering or leaking from the air-cooling heat dissipation channel 211. The sealing sleeve 41 has an annular flow-through groove 411, which is arranged circumferentially along the sealing sleeve 41 and is positioned corresponding to the communication area between the liquid cooling heat dissipation channel 212 and the mounting hole 213.

[0044] The flow groove 411 allows the liquid cooling medium to flow from one side of the liquid cooling heat dissipation channel 212 of the mounting hole 213 to the other side of the liquid cooling heat dissipation channel 212. The sliding sleeve 42 is fitted onto the heat-conducting plug 31. The sliding sleeve 42 can be made of metal or high-strength plastic material. Both ends of the sealing soft sleeve 41 are fixedly connected to the sliding sleeve 42. The sliding sleeve 42 can axially position and limit the sealing soft sleeve 41 to prevent the sealing soft sleeve 41 from deforming before the temperature reaches the first preset temperature, thus ensuring the sealing of the liquid cooling heat dissipation channel 212.

[0045] The thermal expansion ring 43 is fitted onto the thermally conductive plug 31 and is located between the outer wall of the thermally conductive plug 31 and the inner wall of the sealing sleeve 41. The thermally conductive plug 31, the sealing sleeve 41, and the two sliding sleeves 42 together enclose the thermal expansion ring 43 inside. The thermal expansion ring 43 can be a polymer ring with a high coefficient of thermal expansion, a shape memory material ring, a composite material ring containing thermal expansion filler, or a ring structure encapsulated with a phase change expansion material.

[0046] The specific working process of the liquid flow section 4: Under low temperature conditions, the thermal expansion ring 43 is in a contracted state, and the outer wall of the sealing sleeve 41 is pressed tightly against the wall of the mounting hole 213 under the constraint of the sliding sleeve 42. The flow groove 411 is sealed by the hole wall, and the liquid cooling medium cannot cross the mounting hole 213 to form a circumferential connection. The liquid cooling heat dissipation channels 212 on both sides of the mounting hole 213 are in a closed state. Under high temperature conditions, when the temperature of the heat-conducting plug 31 rises, the thermal expansion ring 43 expands radially, causing a relative displacement of the local structure of the sealing sleeve 41. This forms a circumferential flow channel in the area where the flow groove 411 is located, allowing the liquid to pass through, thus connecting and connecting the liquid cooling heat dissipation channels 212 on both sides of the mounting hole 213. The thermal expansion ring 43 automatically drives the opening and closing state of the liquid cooling heat dissipation channels 212 according to the heat generation of the double-sided display unit 2, realizing the connection or closure of the liquid cooling heat dissipation channels 212. While ensuring a good heat dissipation effect, it can save energy and help improve the long-term reliability of the double-sided display device.

[0047] Furthermore, sealing protrusions 412 are arranged at intervals around the bottom of the flow groove 411. For example, the sealing protrusions 412 can be integrally formed with the sealing sleeve 41, and the sealing protrusions 412 can be strip-shaped rib-shaped protrusions; when the outer wall of the sealing sleeve 41 is in contact with the wall of the mounting hole 213, the sealing protrusions 412 can preferentially contact the wall of the mounting hole 213 or form a higher contact pressure area, thereby improving the sealing effect of the liquid cooling heat dissipation channel 212.

[0048] Furthermore, the width of the flow groove 411 is smaller than the diameter of the air-cooled pipe 32, and an annular groove 413 is formed at the edge where the sealing sleeve 41 fits against the air-cooled pipe 32, communicating with the flow groove 411. When the thermal expansion ring 43 expands due to heat, causing the sealing sleeve 41 to unfold, the flow groove 411 connects the liquid cooling channels 212 on both sides of the mounting hole 213, while the annular groove 413 facilitates the flow of liquid cooling medium from one side of the heat-conducting plug 31 to the other side, improving the sealing and connection effect of the liquid passage 4 on the liquid cooling channels 212.

[0049] In one embodiment of the present invention, a liquid cooling pipe 14 is provided inside the mounting frame 11. The liquid cooling pipe 14 is connected to both ends of a plurality of liquid cooling heat dissipation channels 212 to form a liquid cooling passage. A liquid cooling circulation component 15 is provided inside the mounting base 1. The liquid cooling pipe 14 is connected to the liquid cooling circulation component 15. The liquid cooling circulation component 15 enables the liquid cooling medium in the liquid cooling passage to circulate.

[0050] Specifically, a liquid cooling pipe 14 is installed inside the mounting frame 11. The liquid cooling pipe 14 is laid out along the circumference of the mounting frame 11, forming a pipeline around the display panel. The liquid cooling pipe 14 can be a metal pipe or a coolant-resistant flexible hose. The liquid cooling pipe 14 is connected to the inlet and outlet ends of the liquid cooling heat dissipation channel 212 through branch pipes, allowing the coolant to enter the liquid cooling heat dissipation channel 212 from the liquid cooling pipe 14 and then return to the liquid cooling pipe 14. A liquid cooling circulation component 15 is installed inside the mounting base 1. The liquid cooling circulation component 15 can be a circulation pump. The liquid cooling circulation component 15 enables the coolant in the liquid cooling passage to circulate. That is, the coolant enters the liquid cooling pipe 14 inside the mounting frame 11 from the mounting base 1 under the drive of the circulation pump, then flows through multiple liquid cooling heat dissipation channels 212, completes heat exchange, and then flows back to the mounting base 1. The start and stop of the liquid cooling circulation component 15 can be linked with the opening and closing mechanism of the liquid cooling heat dissipation channel 212 and controlled by the temperature of the heat-conducting plug 31. For example, when the liquid cooling heat dissipation channel 212 is in a closed state, the circulation component can stop operating; when the liquid cooling heat dissipation channel 212 is open, the circulation component starts.

[0051] For example, the mounting base 1 also includes a power module and a control module. Both the power module and control module are electrically connected to the first substrate 22 and the second substrate 23, respectively transmitting electrical signals and control signals to the first substrate 22 and the second substrate 23. The power module supplies power to the dual-sided display unit 2; the control module receives external control signals and generates corresponding display drive control signals. The power module and control module are both electrically connected to the first substrate 22 and the second substrate 23, and can distribute power and control signals to the first substrate 22 and the second substrate 23 respectively. This makes dual-sided display no longer simply a matter of synchronous lighting; it allows for simultaneous display of different content on both sides or individual display on either side, thus significantly improving the adaptability of the dual-sided display screen.

[0052] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A double-sided display device, characterized in that, include: Mounting base (1), one side of which is a mounting surface, is located on the mounting surface and is connected to a mounting frame (11); A double-sided display unit (2) is disposed in the mounting frame (11) and includes a first substrate (22), a second substrate (23) and a heat dissipation pad (21) located between the first substrate (22) and the second substrate (23). Multiple display light sources (24) are arranged in an array on both the first substrate (22) and the second substrate (23). Located within the heat dissipation pad (21), a wind-cooled heat dissipation channel (211) is provided along the first direction, and a liquid-cooled heat dissipation channel (212) is provided along the second direction. When the temperature of the heat dissipation pad (21) is lower than the first preset temperature, the liquid-cooled heat dissipation channel (212) is in a closed state, and when the temperature of the heat dissipation pad (21) is higher than the first preset temperature, the liquid-cooled heat dissipation channel (212) is in a through state.

2. The double-sided display device according to claim 1, characterized in that, The dual-sided display unit (2) further includes an encapsulation layer (25) disposed on the first substrate (22) and the second substrate (23) respectively, and a glass cover plate (26) disposed on the encapsulation layer (25).

3. The double-sided display device according to claim 1, characterized in that, Multiple air-cooled heat dissipation channels (211) are spaced apart along the second direction. One end of each air-cooled heat dissipation channel (211) is connected to the interior of the mounting base (1), and the other end is connected to the outside. An active fan (12) is provided inside the mounting base (1), and the active fan (12) is connected to a duct (13). The duct (13) is connected to multiple air-cooled heat dissipation channels (211). When the temperature of the heat dissipation pad (21) is higher than the second preset temperature, the active fan (12) is activated, and the second preset temperature is lower than the second preset temperature.

4. The double-sided display device according to claim 1, characterized in that, Multiple liquid-cooled heat dissipation channels (212) are spaced apart along the first direction. The liquid-cooled heat dissipation channels (212) are connected to the air-cooled heat dissipation channels (211). The liquid-cooled heat dissipation channels (212) are filled with liquid cooling medium. At the intersection of the liquid-cooled heat dissipation channels (212) and the air-cooled heat dissipation channels (211), mounting holes (213) are opened on the heat dissipation pad (21). A ventilation section (3) is provided in the mounting hole (213). The ventilation section (3) includes: A heat-conducting plug (31) is disposed in the mounting hole (213). The two opposite sides of the heat-conducting plug (31) are flush with the two sides of the heat dissipation pad (21). The diameter of the middle part of the heat-conducting plug (31) is smaller than the diameter of the two ends. An air-cooled pipe (32) is inserted through the heat-conducting round plug (31), and both ends of the air-cooled pipe (32) are connected to the air-cooled heat dissipation channels (211) on both sides of the mounting hole (213).

5. The double-sided display device according to claim 4, characterized in that, The heat-conducting plug (31) is also provided with a liquid-passing part (4), which can connect or close the liquid cooling heat dissipation channel (212) on both sides of the mounting hole (213).

6. The double-sided display device according to claim 5, characterized in that, The liquid-passing section (4) includes: A sealing sleeve (41) is fitted onto the middle of the heat-conducting round plug (31), and both ends of the air-cooling pipe (32) pass through the sealing sleeve (41). An annular flow groove (411) is provided on the sealing sleeve (41). A sliding sleeve (42) is fitted onto the heat-conducting round plug (31), and both ends of the sealing soft sleeve (41) are fixedly connected to the sliding sleeve (42); A thermal expansion ring (43) is fitted onto the thermally conductive plug (31) and located between the outer wall of the thermally conductive plug (31) and the inner wall of the sealing soft sleeve (41). The thermally conductive plug (31), the sealing soft sleeve (41), and the sliding sleeves (42) on both sides together surround the thermal expansion ring (43) inside.

7. The double-sided display device according to claim 5, characterized in that, The bottom of the overflow groove (411) is provided with sealing protrusions (412) at intervals.

8. The double-sided display device according to claim 5, characterized in that, The width of the flow groove (411) is smaller than the diameter of the air-cooled pipe (32), and an annular through groove (413) communicating with the flow groove (411) is formed at the edge where the sealing sleeve (41) fits against the air-cooled pipe (32).

9. The double-sided display device according to claim 3, characterized in that, The mounting frame (11) is provided with a liquid cooling pipe (14), which is connected to both ends of the multiple liquid cooling heat dissipation channels (212) to form a liquid cooling passage; the mounting base (1) is provided with a liquid cooling circulation component (15), which is connected to the liquid cooling pipe (14) and enables the liquid cooling medium in the liquid cooling passage to circulate.

10. The double-sided display device according to claim 1, characterized in that, The mounting base (1) is also equipped with a power module and a control module. The power module and the control module are electrically connected to the first substrate (22) and the second substrate (23), and transmit electrical signals and control signals to the first substrate (22) and the second substrate (23), respectively.

Images