An LED screen that prevents external high temperature from affecting heat dissipation effect

Abstract

The present invention discloses an LED screen that avoids the influence of external high temperature on the heat dissipation effect, comprising an alloy frame, a double-axis motor, an electrical box, an LED template body, a heat exchange water pipe, a receiving plate, a servo motor, a blocking block and a cabinet door, wherein the alloy frame is fixed to the wall by screws, the double-axis motor is fixed to the internal top of the alloy frame, the electrical box is located at the front side of the alloy frame, the LED template body is installed at the front end of the electrical box, a servo motor is fixed inside the electrical box, the blocking block is connected to the electrical box by a snap connection, the cabinet door is installed at the rear end of the electrical box by a hinge, and heat sinks are fixed at equal intervals on the outer side of the cabinet door. The LED screen that avoids the influence of external high temperature on the heat dissipation effect can prevent high-temperature air from entering the alloy frame to affect water cooling when the external temperature is high by moving the blocking plate, and can facilitate the disassembly and assembly of the electrical box and the receiving plate and the electrical box, so as to achieve the purpose of rapid installation.

Description

Technical Field

[0001] The present invention relates to the technical field of LED screens, and in particular to an LED screen that prevents external high temperatures from affecting heat dissipation effects. Background Art

[0002] The LED screen is a chip of electroluminescent semiconductor material, which is cured to the bracket with silver glue or white glue, and then the chip and the circuit board are connected with silver wire or gold wire, and then sealed with epoxy resin on all sides to protect the internal core wire, and finally the shell is installed. Therefore, the advantage of LED lights is good earthquake resistance. There are many kinds of LED screens proposed on the market;

[0003] The Chinese invention with the authorization announcement number CN106782299B proposes an intelligent dimming LED screen, which includes an MCU module and an LED dot matrix screen connected to the MCU module, a digital light intensity module, a button module, an infrared remote control module, a liquid crystal display module and a power module; the digital light intensity module collects light intensity data, performs analog-to-digital conversion on the light intensity data to obtain an electrical signal, and transmits the electrical signal to the MCU module, the MCU module processes the electrical signal, and outputs the corresponding PWM modulation to the LED dot matrix screen, and the LED dot matrix screen adjusts the brightness level according to the PWM modulation; the button module starts the button mode, adjusts the brightness level of the LED dot matrix screen and exits the button mode through buttons; the infrared remote control module is connected to the infrared remote control, and remotely adjusts the brightness level through the buttons on the infrared remote control; the liquid crystal display module is used to display the function mode and brightness level. The present invention achieves the purpose of saving energy and being green and environmentally friendly, and can also create comfortable light for the human eye;

[0004] However, existing LED screens still have the following problems:

[0005] 1. In order to improve the heat dissipation effect, most electrical products on the market use a combination of water cooling and air cooling to achieve efficient heat dissipation. However, when the outside temperature is high in summer, the outside air temperature is higher than the temperature inside the alloy frame. Air with a temperature higher than the temperature of the surrounding environment of the electrical appliance enters the surrounding environment of the electrical appliance, and the high temperature exchanges heat with the cooling water, which not only fails to achieve the purpose of efficient heat dissipation, but also affects the water cooling heat dissipation;

[0006] It is necessary to install the electrical boxes on the mounting frame in sequence, and then connect the electrical boxes to each other. There are many connection steps, which increases the workload of the staff and is inconvenient to quickly and synchronously disassemble and assemble the electrical boxes to each other and the connecting plate to the electrical boxes. Therefore, we propose an LED screen that avoids the influence of external high temperature on the heat dissipation effect, so as to solve the above problems. Summary of the invention

[0007] The purpose of the present invention is to provide an LED screen that can avoid the influence of external high temperature on the heat dissipation effect, so as to solve the problem that the existing LED screen proposed in the above background technology combines cooling water cooling and air cooling to improve the heat dissipation effect, but when the external temperature is high in summer, the external air temperature is higher than the temperature inside the alloy frame, which affects the water cooling heat dissipation and is inconvenient to disassemble and assemble the electrical box and the electrical box, as well as the connecting plate and the electrical box.

[0008] To achieve the above object, the present invention provides the following technical solutions: an LED screen that prevents external high temperature from affecting the heat dissipation effect, comprising an alloy frame fixed to a wall by screws, a first heat dissipation net installed at the left end of the alloy frame, a second heat dissipation net installed at the right end of the alloy frame, and brackets welded to the top wall and the bottom wall of the alloy frame, and the brackets are symmetrically arranged about the vertical center line of the alloy frame;

[0009] A dual-axis motor, wherein the dual-axis motor is fixed to the top of the alloy frame, a cooling fan is arranged inside the alloy frame, and the cooling fan is mounted on a bracket at the left end of the alloy frame, an output end of the dual-axis motor is connected to a reverse screw rod, and an outer end of the reverse screw rod is threadedly connected to a blocking plate;

[0010] An electrical box, the electrical box is located at the front side of the alloy frame, a slot is provided at the right end of the electrical box, a second through hole is provided below the slot, and the second through hole is provided in the electrical box;

[0011] An LED template body, wherein the LED template body is installed at the front end of the electrical box;

[0012] It is characterized by further comprising:

[0013] A hot water exchange pipe, the hot water exchange pipe is fixed at the inner rear end of the alloy frame, a hose is fixed at the end of the hot water exchange pipe, and temperature sensors are embedded and installed at the left end and the top end of the alloy frame;

[0014] A receiving plate, the receiving plate is fixed to the front side of the alloy frame, and first through holes are formed at equal intervals inside the receiving plate;

[0015] A servo motor, a servo motor is fixed inside the electrical box, a roller is fixed at the output end of the servo motor, a top end of the roller is meshed and connected with a horizontal plate, a vertical plate is welded on the upper surface of the horizontal plate, an electrical connection plug is installed at the front end of the vertical plate, a first support rod is arranged below the electrical connection plug, the first support rod is fixedly connected to the left side of the vertical plate, a first assembly block is connected to the left end of the first support rod, a second support rod is connected to the left end of the roller, and a second assembly block is connected to the bottom end of the second support rod;

[0016] A blocking block connected to the electrical box by a snap-fit ​​connection;

[0017] The cabinet door is installed at the rear end of the electrical appliance box through a hinge, and heat sinks are fixed at equal intervals on the outer side of the cabinet door.

[0018] Preferably, the inner sides of the first heat dissipation net and the second heat dissipation net are both attached with a barrier plate, and the first heat dissipation net is symmetrically arranged with respect to the transverse center line of the alloy skeleton.

[0019] Preferably, the transverse center lines of the slot and the second through hole coincide with the transverse center lines of the electrical connection plug and the first support rod respectively, and the first assembly block is connected to the first support rod by a threaded connection.

[0020] Preferably, the receiving plates are fixed at equal intervals on the front side of the alloy frame, and the second assembly block is connected to the receiving plates by a snap-fit ​​connection.

[0021] Preferably, the vertical plate, the second support rod and the electrical box all form a sliding structure, and the moving track of the vertical plate is perpendicular to the moving track of the second support rod, and the right end of the second support rod and the bottom end of the horizontal plate are both serrated structures.

[0022] Preferably, the combination of the horizontal plate and the vertical plate forms an "L"-shaped structure, and the electrical connection plug and the vertical plate are connected by a snap-fit ​​connection.

[0023] Preferably, the rear side surface of the water exchange pipe is flush with the rear side surface of the alloy skeleton, and the longitudinal section of the water exchange pipe is a broken line structure.

[0024] Preferably, the height dimension of the LED template body is greater than the height dimension of the electrical box, and the shortest distance between the lower surface of the LED template body and the lower surface of the electrical box is equal to the height dimension of the receiving plate.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: the LED screen that prevents the external high temperature from affecting the heat dissipation effect can prevent the high-temperature air from entering the alloy frame and affecting the water-cooling heat dissipation when the external high temperature is high by moving the baffle plate, and it is convenient to disassemble and assemble the electrical box and the electrical box, and the connecting plate and the electrical box;

[0026] 1. An alloy frame, a heat exchange pipe and a cooling fan are provided. The heat exchange pipe with a broken line structure is located inside the alloy frame. Cold water flows inside the heat exchange pipe to expand the heat exchange surface and improve the heat exchange effect. Under the action of the cooling fan, air cooling and water cooling are combined to quickly dissipate heat.

[0027] 2. A first heat dissipation net and a baffle are provided. When the outside air temperature is higher than the temperature of the inner cavity formed by the alloy frame and the electrical box, the baffle is moved by rotating the reverse screw rod. The baffle is blocked outside the first heat dissipation net to prevent the outside high temperature air from entering the inner cavity formed by the alloy frame and the electrical box, thereby preventing the outside high temperature from affecting the water cooling heat dissipation;

[0028] 3. A receiving plate, an electrical box, a roller, an electrical connection plug, a first assembly block and a second assembly block are provided. By rotating the roller, the electrical connection plug, the first assembly block and the second assembly block are moved, so that the electrical boxes and the receiving plate are connected to the electrical boxes, and the electrical boxes and the receiving plate are convenient for disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the overall structure of the alloy skeleton of the present invention;

[0031] Figure 3 This is a schematic diagram of the cross-sectional structure of the alloy skeleton of the present invention;

[0032] Figure 4 It is a schematic diagram of the structure of the first assembly block and the second assembly block in the moving state of the present invention;

[0033] Figure 5 It is a schematic diagram of the cutaway structure of the electrical box of the present invention from the side;

[0034] Figure 6 This is a schematic diagram of the overall structure of the electrical box of the present invention;

[0035] Figure 7 It is a schematic diagram of the cross-sectional structure of the electrical box of the present invention viewed from above;

[0036] Figure 8 It is a schematic diagram of the overall structure of the connection between the electrical appliance connecting plug and the vertical plate of the present invention.

[0037] In the figure: 1. alloy skeleton; 2. first heat dissipation net; 3. second heat dissipation net; 4. dual-axis motor; 5. baffle plate; 6. heat exchange water pipe; 7. receiving plate; 8. first perforation; 9. electrical box; 10. servo motor; 11. roller; 12. horizontal plate; 13. vertical plate; 14. electrical connection plug; 15. first support rod; 16. first assembly block; 17. second support rod; 18. second assembly block; 19. second perforation; 20. slot; 21. blocking block; 22. cabinet door; 23. heat sink; 24. LED template body; 25. hose; 26. bracket; 27. cooling fan; 28. temperature sensor; 29. ​​reverse screw. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] See also Figure 1-8 The present invention provides a technical solution: an LED screen that avoids the influence of external high temperature on the heat dissipation effect, comprising an alloy frame 1, a first heat dissipation net 2, a second heat dissipation net 3, a dual-axis motor 4, a baffle plate 5, a heat exchange water pipe 6, a receiving plate 7, a first perforation 8, an electrical box 9, a servo motor 10, a roller 11, a horizontal plate 12, a vertical plate 13, an electrical connection plug 14, a first support rod 15, a first assembly block 16, a second support rod 17, a second assembly block 18, a second perforation 19, a slot 20, a blocking block 21, a cabinet door 22, a heat sink 23, an LED template body 24, a hose 25, a bracket 26, a heat dissipation fan 27, a temperature sensor 28 and a reverse screw rod 29, an alloy frame 1 fixed to the wall by screws, a first heat dissipation net 2 is installed at the left end of the alloy frame 1, a second heat dissipation net 3 is installed at the right end of the alloy frame 1, the top wall surface and the bottom wall surface of the alloy frame 1 are both welded and connected with brackets 26, and the brackets 26 are symmetrically arranged about the vertical center line of the alloy frame 1;

[0040] The dual-axis motor 4 is fixed to the top of the alloy frame 1. A cooling fan 27 is provided inside the alloy frame 1. The cooling fan 27 is mounted on a bracket 26 at the left end of the alloy frame 1. The output end of the dual-axis motor 4 is connected to a reverse screw 29. The outer end of the reverse screw 29 is threadedly connected to a baffle plate 5.

[0041] The electrical box 9 is located at the front side of the alloy frame 1. A slot 20 is provided at the right end of the electrical box 9. A second through hole 19 is provided below the slot 20. The second through hole 19 is provided in the electrical box 9.

[0042] LED template body 24, LED template body 24 is installed at the front end of the electrical box 9;

[0043] Also includes:

[0044] The hot water exchange pipe 6 is fixed at the rear end of the alloy frame 1. A hose 25 is fixed at the end of the hot water exchange pipe 6. The left end and the top end of the alloy frame 1 are both inlaid with temperature sensors 28.

[0045] A receiving plate 7, the receiving plate 7 is fixed to the front side of the alloy frame 1, and first through holes 8 are formed at equal intervals inside the receiving plate 7;

[0046] Servo motor 10, the servo motor 10 is fixed inside the electrical box 9, a roller 11 is fixed to the output end of the servo motor 10, the top of the roller 11 is meshed and connected with a horizontal plate 12, a vertical plate 13 is welded to the upper surface of the horizontal plate 12, an electrical connection plug 14 is installed at the front end of the vertical plate 13, a first support rod 15 is arranged below the electrical connection plug 14, the first support rod 15 is fixedly connected to the left side of the vertical plate 13, the left end of the first support rod 15 is connected to a first assembly block 16, the left end of the roller 11 is connected to a second support rod 17, and the bottom end of the second support rod 17 is connected to a second assembly block 18;

[0047] A blocking block 21, which is connected to the electrical box 9 by means of a snap connection;

[0048] The cabinet door 22 is installed at the rear end of the electrical box 9 through a hinge, and the outer side surface of the cabinet door 22 is fixed with heat sinks 23 at equal intervals;

[0049] like Figure 3 In the figure, the inner sides of the first heat dissipation net 2 and the second heat dissipation net 3 are both attached with the blocking plate 5, and the first heat dissipation net 2 is symmetrically arranged about the transverse center line of the alloy skeleton 1. Since the inner sides of the first heat dissipation net 2 and the second heat dissipation net 3 are both attached with the blocking plate 5, the movement of the blocking plate 5 facilitates the blocking of the first heat dissipation net 2 and the second heat dissipation net 3.

[0050] like Figure 4 In the figure, the transverse center lines of the slot 20 and the second through hole 19 coincide with the transverse center lines of the electrical connection plug 14 and the first support rod 15, respectively, and the first assembly block 16 is connected to the first support rod 15 in a threaded connection. Since the first assembly block 16 is connected to the first support rod 15 in a threaded connection, it is convenient to disassemble and assemble the first assembly block 16 and the first support rod 15.

[0051] like Figure 2 In the figure, the receiving plate 7 is fixed at equal intervals on the front side of the alloy frame 1, and the second assembly block 18 is connected to the receiving plate 7 by a snap-fit ​​connection. Since the second assembly block 18 is connected to the receiving plate 7 by a snap-fit ​​connection, it is convenient to install the electrical box 9 on the receiving plate 7 through the second assembly block 18.

[0052] like Figure 4 In the figure, the vertical plate 13, the second support rod 17 and the electrical box 9 all constitute a sliding structure, and the moving trajectory of the vertical plate 13 is perpendicular to the moving trajectory of the second support rod 17, and the right end of the second support rod 17 and the bottom end of the horizontal plate 12 are both serrated structures. Since the right end of the second support rod 17 and the bottom end of the horizontal plate 12 are both serrated structures, the second support rod 17 and the horizontal plate 12 are both meshed and connected with the roller 11.

[0053] like Figure 4 and Figure 8In the figure, the horizontal plate 12 and the vertical plate 13 are combined to form an "L"-shaped structure, and the connection method between the electrical connection plug 14 and the vertical plate 13 is a snap-fit ​​connection. Since the connection method between the electrical connection plug 14 and the vertical plate 13 is a snap-fit ​​connection, it is convenient to disassemble and assemble the electrical connection plug 14 and the vertical plate 13.

[0054] like Figure 3 In the figure, the rear side of the hot water exchange pipe 6 is flush with the rear side of the alloy skeleton 1, and the longitudinal section of the hot water exchange pipe 6 is a broken line structure. Since the longitudinal section of the hot water exchange pipe 6 is a broken line structure, the heat dissipation effect is improved.

[0055] like Figure 4 In the figure, the height dimension of the LED template body 24 is greater than the height dimension of the electrical box 9, and the shortest distance between the lower surface of the LED template body 24 and the lower surface of the electrical box 9 is equal to the height dimension of the docking plate 7, which is convenient for arranging the LED template body 24.

[0056] When using the LED screen that avoids the influence of external high temperature on the heat dissipation effect, during installation, place two sets of electrical boxes 9 on the receiving plate 7, align the second assembly block 18 on the electrical box 9 with the first through hole 8 opened inside the receiving plate 7, turn on the servo motor 10, and the servo motor 10 drives the roller 11 to rotate counterclockwise. Since the bottom end of the horizontal plate 12 and the left end of the second support rod 17 are both serrated structures, the bottom end of the horizontal plate 12 and the roller 11, as well as the left end of the second support rod 17 and the roller 11 are meshed and connected. As the roller 11 rotates counterclockwise, the horizontal plate 12 moves to the left. The second support rod 17 moves downward, so that the vertical plate 13, the electrical connection plug 14, the first support rod 15 and the first assembly block 16 move to the left, the second support rod 17 and the second assembly block 18 move downward, the electrical connection plug 14 is inserted into the slot 20 opened inside another electrical box 9, the first assembly block 16 is inserted into the second through hole 19, and the second assembly block 18 enters the first through hole 8, completing the connection between the electrical boxes 9 and the electrical boxes 9 and the electrical boxes 9 and the receiving plate 7, and completing the electrical connection between the electrical boxes 9 and the electrical boxes 9 through the electrical connection plug 14;

[0057] When the electrical box 9 needs to be installed on the side of the alloy frame 1, open the cabinet door 22 installed on the electrical box 9 by the hinge, rotate the first assembly block 16, remove the first assembly block 16 from the first support rod 15, and then move forward the electrical connection plug 14 stuck at the front end of the vertical plate 13. The part of the electrical connection plug 14 installed on the vertical plate 13 is made of flexible material. Bend the electrical connection plug 14 forward so that the electrical connection plug 14 leaves the vertical plate 13, and then move the electrical connection plug 14 to the right, so that the electrical connection plug 14 can be removed from the left end of the electrical box 9, and then the blocking block 21 is stuck in the groove corresponding to the second through hole 19 at the left end of the receiving plate 7;

[0058] When the electrical components inside the electrical box 9 and the LED template body 24 are working, the cooling fan 27 is working, and air is introduced through the cooling fan 27. The air passes through the first heat dissipation net 2 and enters the space between the alloy skeleton 1 and the electrical box 9. After heat exchange, the air passes through the second heat dissipation net 3 and flows out. At the same time, cold water is transported to the inside of the hot water exchange pipe 6 through the hose 25. The air cooling and water cooling are combined to prevent the high temperature from affecting the heat dissipation effect. When the temperature sensor 28 detects that the air temperature inside the alloy skeleton 1 is lower than the temperature of the outside air, the cooling fan 27 is disconnected, and the dual-axis motor 4 is turned on. The dual-axis motor 4 drives the reverse screw rod 29 to rotate. The dual-axis motor 4 drives the reverse screw rod 29 to rotate clockwise, so that the baffle plate 5 threadedly connected to the reverse screw rod 29 moves, so that the two groups of baffle plates 5 are located on the right side of the first heat dissipation net 2. The baffle plate 5 is used to block the first heat dissipation net 2 to prevent the high temperature air from entering the interior of the alloy skeleton 1 and affecting the water cooling. The above completes a series of operations of the LED screen that prevents the high temperature from affecting the heat dissipation effect. The content not described in detail in this description belongs to the prior art known to professional and technical personnel in this field.

[0059] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0060] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An LED screen for preventing external high temperature from affecting the heat dissipation effect, comprising an alloy frame (1) fixed to a wall by screws, a first heat dissipation net (2) being installed at the left end of the alloy frame (1), a second heat dissipation net (3) being installed at the right end of the alloy frame (1), a bracket (26) being welded to the top wall surface and the bottom wall surface of the alloy frame (1), and the bracket (26) being symmetrically arranged with respect to the vertical center line of the alloy frame (1); A dual-axis motor (4), wherein the dual-axis motor (4) is fixed to the internal top end of the alloy frame (1), a cooling fan (27) is arranged inside the alloy frame (1), and the cooling fan (27) is mounted on a bracket (26) at the left end inside the alloy frame (1), the output end of the dual-axis motor (4) is connected to a reverse screw rod (29), the outer end of the reverse screw rod (29) is threadedly connected to a baffle plate (5), the inner side surfaces of the first heat dissipation net (2) and the second heat dissipation net (3) are both fitted with the baffle plate (5), and the first heat dissipation net (2) is symmetrically arranged with respect to the transverse center line of the alloy frame (1); An electrical box (9), the electrical box (9) being located at the front side of the alloy frame (1), a slot (20) being provided at the right end of the electrical box (9), a second through hole (19) being provided below the slot (20), and the second through hole (19) being provided in the electrical box (9); An LED template body (24), wherein the LED template body (24) is mounted at the front end of the electrical box (9); It is characterized in that Also includes: A heat exchange water pipe (6), the heat exchange water pipe (6) being fixed to the rear end of the alloy frame (1), a hose (25) being fixed to the end of the heat exchange water pipe (6), and temperature sensors (28) being embedded and mounted at the left end and the top end of the alloy frame (1); A receiving plate (7), the receiving plate (7) being fixed to the front side of the alloy frame (1), and the receiving plate (7) having first through holes (8) formed at equal intervals inside; A servo motor (10), wherein the servo motor (10) is fixed inside the electrical box (9), a roller (11) is fixed at the output end of the servo motor (10), the top end of the roller (11) is meshedly connected with a horizontal plate (12), a vertical plate (13) is welded to the upper surface of the horizontal plate (12), an electrical connection plug (14) is installed at the front end of the vertical plate (13), a first support rod (15) is arranged below the electrical connection plug (14), the first support rod (15) is fixedly connected to the left side of the vertical plate (13), the left end of the first support rod (15) is connected to a first assembly block (16), and the left end of the roller (11) is connected to a second support rod (17), the bottom end of the second support rod (17) is connected to a second assembly block (18), the transverse center lines of the slot (20) and the second through hole (19) coincide with the transverse center lines of the electrical connection plug (14) and the first support rod (15) respectively, and the first assembly block (16) and the first support rod (15) are connected by a threaded connection, the horizontal plate (12) and the vertical plate (13) are combined to form an "L"-shaped structure, and the electrical connection plug (14) and the vertical plate (13) are connected by a snap-fit ​​connection, the receiving plate (7) is fixed at equal intervals on the front side of the alloy frame (1), and the second assembly block (18) and the receiving plate (7) are connected by a snap-fit ​​connection; A blocking block (21), wherein the blocking block (21) is connected to the electrical box (9) by means of a snap-fit ​​connection; A cabinet door (22), the cabinet door (22) being mounted on the rear end of the electrical appliance box (9) via hinges, and heat sinks (23) being fixed at equal intervals on the outer side surface of the cabinet door (22).

2. According to claim 1, an LED screen that prevents external high temperature from affecting the heat dissipation effect is characterized by: The vertical plate (13) and the second support rod (17) and the electrical box (9) all form a sliding structure, and the moving track of the vertical plate (13) is perpendicular to the moving track of the second support rod (17), and the right end of the second support rod (17) and the bottom end of the horizontal plate (12) both have a sawtooth structure.

3. According to claim 1, the LED screen that avoids the influence of external high temperature on the heat dissipation effect is characterized by: The rear side surface of the hot water exchange pipe (6) is flush with the rear side surface of the alloy frame (1), and the longitudinal section of the hot water exchange pipe (6) is a broken line structure.

4. The LED screen for preventing heat dissipation from being affected by high temperature in the outside world according to claim 1, characterized in that: The height dimension of the LED template body (24) is greater than the height dimension of the electrical appliance box (9), and the shortest distance between the lower surface of the LED template body (24) and the lower surface of the electrical appliance box (9) is equal to the height dimension of the receiving plate (7).

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