Liquid crystal display screen with graded heat dissipation function

Abstract

The invention relates to the technical field of display screen accessories, in particular to a liquid crystal display screen with a graded heat dissipation function, which comprises a display screen body, a back plate is fixedly mounted on the back surface of the display screen body, light-emitting mechanisms are uniformly arranged on the outer side of the back plate, and each light-emitting mechanism comprises a first bulb and a second bulb. A connecting piece is arranged between the first bulb and the second bulb, the connecting piece is connected with the first bulb and the second bulb through an adjusting device, a pipeline is detachably installed on the side, away from the display screen body, of the back plate and makes contact with the first bulb, and a circulating mechanism is jointly installed at the two ends of the pipeline. According to the liquid crystal display screen with the graded heat dissipation function, by arranging the first bulb and the second bulb, under the cooperation of the connecting piece, the first bulb and the second bulb alternately work, the continuous working duration of the first bulb and the second bulb is shortened, and therefore heat generated by the first bulb and the second bulb can be reduced, and a certain heat dissipation effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of display screen accessories, in particular to a liquid crystal display screen with a graded heat dissipation function. Background Art

[0002] The backlight of the LCD screen is the main light source of the LCD screen. The light emitted by it can be irradiated on the LCD panel in a planar shape through structures such as the light guide plate and the light diffusion plate, and then the LCD panel is electronically controlled by the control circuit board to display the image on the screen. The backlight of the LCD screen is prone to generate a lot of heat when it is powered on. The existing heat dissipation method is to perform static heat dissipation through the heat dissipation holes. However, when this heat dissipation method is used, the heat evaporates naturally, and its evaporation speed is slow, the heat dissipation effect is poor, and the bulb is prone to damage due to excessive temperature when used for a long time. Summary of the invention

[0003] The object of the present invention is to provide a liquid crystal display screen with a graded heat dissipation function to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a liquid crystal display screen with a graded heat dissipation function, comprising a display screen body, a back plate fixedly installed on the back of the display screen body, a light-emitting mechanism evenly arranged on the outer side of the back plate, the light-emitting mechanism comprising a No. 1 bulb and a No. 2 bulb, a connecting piece is arranged between the No. 1 bulb and the No. 2 bulb, the connecting piece is connected to the No. 1 bulb and the No. 2 bulb through an adjusting device, a pipe is detachably installed on the side of the back plate away from the display screen body, the pipe is in contact with the No. 1 bulb, and a circulation mechanism is installed at both ends of the pipe.

[0005] Preferably, the adjusting device includes a base, the base is fixedly mounted on a side of the back plate away from the display screen body, the base and the connecting piece are fixedly connected, the external rotating sleeve of the base is provided with a support seat, the outside of the support seat is provided with a rotating assembly, a support frame is fixedly mounted above the support seat, two groups of mounting grooves are opened inside the support frame, and the two groups of mounting grooves are respectively plug-in compatible with the No. 1 light bulb and the No. 2 light bulb.

[0006] Preferably, a slide groove is provided inside the support frame, and the slide groove is slidably connected to the No. 1 light bulb and the No. 2 light bulb. A counterweight block is slidably inserted inside the slide groove, and the counterweight block is connected to the support frame through a limiting structure.

[0007] Preferably, the limiting structure includes a limiting block and a groove, the groove is opened below the counterweight block, the limiting block is slidably inserted into the inside of the groove through a No. 1 spring, a limiting hole is opened at the bottom of the support frame, the limiting block slides through the limiting hole, and a fixed block is fixedly installed above the base, and the fixed block and the limiting block are in contact and fit.

[0008] Preferably, a brush is fixedly mounted on the top of the base, and the brush is in contact and cooperation with the No. 1 light bulb and the No. 2 light bulb.

[0009] Preferably, the rotating assembly includes a gear ring, a rotating shaft, a column gear and a toothed belt. The gear ring is fixedly sleeved on the outside of the support seat, the rotating shaft is rotatably installed on the four corners of the back plate, the column gear is fixedly sleeved on the outside of the rotating shaft, the external rotating sleeve of the column gear is provided with a toothed belt, a power structure is provided on the outside of the toothed belt, and the toothed belt is meshed with the gear ring.

[0010] Preferably, the power structure includes a motor and a half gear, the motor is fixedly mounted below the back plate, the half gear is fixedly sleeved on the output end of the motor, and the half gear is meshed with a toothed belt.

[0011] Preferably, the circulation mechanism includes a water tank, a water inlet is provided on the top of the water tank, a water inlet pipe is inserted on one side of the water tank, a water outlet pipe is inserted on the other end of the water tank, a one-way valve is movably inserted inside the water outlet pipe, one end of the pipe is connected to the water inlet pipe, and the other end of the pipe is connected to the water outlet pipe, and the water outlet pipe is connected through a conveying assembly and a half gear.

[0012] Preferably, the conveying assembly includes a piston cylinder, the water outlet pipe is connected to the piston cylinder, a piston plate is slidably inserted inside the piston cylinder, the piston plate is connected to the water tank through an elastic structure, a pushing member is fixedly installed below the piston plate, the pushing member slides through the water tank, a rack is fixedly installed below the pushing member, and the rack is meshed with a half gear.

[0013] Preferably, the elastic structure includes a column and a No. 2 spring, the column is fixedly installed inside the water tank, the column and the piston plate are slidably connected, the No. 2 spring is movably sleeved outside the column, and the No. 2 spring and the piston plate are fixedly connected.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By setting the No. 1 bulb and the No. 2 bulb, with the cooperation of the connecting parts, the No. 1 bulb and the No. 2 bulb work alternately, reducing the continuous working time of the No. 1 bulb and the No. 2 bulb, thereby reducing the heat generation of the No. 1 bulb and the No. 2 bulb and achieving a certain heat dissipation effect.

[0016] 2. By setting the counterweight, under the action of gravity, the No. 1 bulb can be automatically fixed to the support frame, and the No. 2 bulb can be automatically separated from the support frame, which is convenient for replacing the damaged bulb. The operation is simple and there is no need to cut off the power to the bulb during replacement, which is conducive to improving the safety of bulb replacement.

[0017] 3. By setting up pipes, with the cooperation of water tanks, the coolant can circulate inside the pipes to dissipate the heat of the bulbs. Moreover, during the replacement process of bulb No. 1 and bulb No. 2, bulb No. 1 and bulb No. 2 will not continue to contact one place in the pipe, which is beneficial to improve the heat dissipation effect, and the pipes can amplify the light. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is another perspective structural schematic diagram of the present invention;

[0020] Figure 3 For the present invention Figure 2 A magnified image of point A;

[0021] Figure 4 It is a partial structural schematic diagram of the present invention;

[0022] Figure 5 It is a partial structural sectional view of the present invention;

[0023] Figure 6 For the present invention Figure 5 A magnified view of point B;

[0024] Figure 7 It is a partial structural cross-sectional view of the present invention;

[0025] Figure 8 It is a cross-sectional view of the circulation mechanism structure of the present invention.

[0026] In the accompanying drawings, the list of parts represented by each reference numeral is as follows: 1. display screen body; 2. back panel; 3. bulb No. 1; 4. bulb No. 2; 5. base; 6. connector; 7. support frame; 8. mounting slot; 9. slide slot; 10. counterweight; 11. limit block; 12. limit hole; 13. groove; 14. spring No. 1; 15. fixing block; 16. brush; 17. support seat; 18. gear ring; 19. water tank; 20. water inlet; 21. piston cylinder; 22. piston plate; 23. column; 24. spring No. 2; 25. pusher; 26. water inlet pipe; 27. water outlet pipe; 28. one-way valve; 29. ​​pipeline; 30. rack; 31. motor; 32. half gear; 33. rotating shaft; 34. column gear; 35. toothed belt. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-Figure 8 In the figure, a liquid crystal display screen with graded heat dissipation function includes a display screen body 1, a back plate 2 is fixedly installed on the back of the display screen body 1, and light-emitting mechanisms are evenly arranged on the outer side of the back plate 2. The light-emitting mechanisms include a No. 1 bulb 3 and a No. 2 bulb 4. A connecting piece 6 is arranged between the No. 1 bulb 3 and the No. 2 bulb 4. The connecting piece 6 is connected to the No. 1 bulb 3 and the No. 2 bulb 4 through an adjusting device. A pipe 29 is detachably installed on the side of the back plate 2 away from the display screen body 1. The pipe 29 is in contact with the No. 1 bulb 3, and a circulation mechanism is installed at both ends of the pipe 29.

[0029] The adjusting device includes a base 5, which is fixedly mounted on a side of the back plate 2 away from the display screen body 1. The base 5 is fixedly connected to a connecting piece 6. A support seat 17 is provided on the outer rotating sleeve of the base 5. A rotating assembly is provided on the outer side of the support seat 17. A support frame 7 is fixedly mounted above the support seat 17. Two groups of mounting grooves 8 are provided inside the support frame 7. The two groups of mounting grooves 8 are respectively plugged in and matched with the No. 1 bulb 3 and the No. 2 bulb 4.

[0030] A slide groove 9 is provided inside the support frame 7, and the slide groove 9 is slidably connected to the No. 1 bulb 3 and the No. 2 bulb 4. A counterweight 10 is slidably inserted inside the slide groove 9, and the counterweight 10 is connected to the support frame 7 through a limiting structure.

[0031] The limiting structure includes a limiting block 11 and a groove 13. The groove 13 is opened below the counterweight block 10. The limiting block 11 is slidably inserted into the inside of the groove 13 through a spring 14. A limiting hole 12 is opened at the bottom of the support frame 7. The limiting block 11 slides through the limiting hole 12. A fixed block 15 is fixedly installed above the base 5, and the fixed block 15 is in contact with the limiting block 11.

[0032] Specifically, light bulb No. 1 3 and light bulb No. 2 4 are respectively inserted into the two groups of grooves 13, and light bulb No. 1 3 and light bulb No. 2 4 can slide inside the slide groove 9. In the initial state, light bulb No. 1 3 is in contact with the connecting piece 6, and light bulb No. 2 4 is not in contact with the connecting piece 6, that is, light bulb No. 1 3 is lit, and light bulb No. 2 4 is not lit. The rotating assembly drives the support seat 17 to rotate, thereby driving the support frame 7 to rotate. The support frame 7 rotates ninety degrees. At this time, light bulb No. 1 3 is located below light bulb No. 2 4. Under the action of gravity, the counterweight block 10 drives light bulb No. 2 4 to move inside the slide groove 9 toward the direction of the connecting piece 6. At this time, light bulb No. 2 4 is in contact with the connecting piece 6 and light bulb No. 2 4 is lit.

[0033] At the same time, when the counterweight 10 moves to the position of the limiting hole 12, under the elastic force of the No. 1 spring 14, the No. 1 spring 14 pushes the limiting block 11 out from the inside of the groove 13, and the limiting block 11 passes through the limiting hole 12, so that the counterweight 10 can be fixed to the support frame 7, thereby limiting the movement of the No. 2 bulb 4.

[0034] At the same time, when the support frame 7 rotates, it can drive the limit block 11 and the fixed block 15 that cooperate with the No. 1 bulb 3 to contact. The fixed block 15 pushes the limit block 11 to the inside of the groove 13. At this time, the No. 1 spring 14 is deformed by the force. When the support frame 7 rotates ninety degrees, under the action of gravity, the counterweight block 10 can drive the No. 1 bulb 3 away from the connecting piece 6, and the No. 1 bulb 3 does not emit light. The rotating support frame 7 drives the No. 1 bulb 3 and the No. 2 bulb 4. Under the action of gravity, the No. 1 bulb 3 and the No. 2 bulb 4 can be adjusted to alternately contact with the connecting piece 6, so that the No. 1 bulb 3 and the No. 2 bulb 4 can work alternately, reducing the working time of the No. 1 bulb 3 and the No. 2 bulb 4, thereby achieving a certain heat dissipation effect and facilitating the replacement of damaged bulbs. The operation is simple and can be replaced without stopping the machine.

[0035] A brush 16 is fixedly mounted above the base 5 , and the brush 16 is in contact with the first light bulb 3 and the second light bulb 4 .

[0036] When the first and second bulbs 3 and 4 rotate, they come into contact with the brush 16 , and the brush 16 can clean dust on the surfaces of the first and second bulbs 3 and 4 , thereby facilitating the maintenance of the brightness of the first and second bulbs 3 and 4 .

[0037] The rotating assembly includes a gear ring 18, a rotating shaft 33, a column gear 34 and a toothed belt 35. The gear ring 18 is fixedly sleeved on the outside of the support seat 17, the rotating shaft 33 is rotatably installed at the four corners of the back plate 2, the column gear 34 is fixedly sleeved on the outside of the rotating shaft 33, the outer sleeve of the column gear 34 is rotatably provided with a toothed belt 35, the outer part of the toothed belt 35 is provided with a power structure, and the toothed belt 35 is meshed with the gear ring 18.

[0038] The power structure includes a motor 31 and a half gear 32 . The motor 31 is fixedly mounted below the back plate 2 . The half gear 32 is fixedly sleeved on the output end of the motor 31 . The half gear 32 is meshed with a toothed belt 35 .

[0039] Specifically, the motor 31 is connected to an external power source, and the motor 31 drives the half gear 32 to rotate. Under the action of the rotating shaft 33 and the column gear 34, since the toothed belt 35 and the half gear 32 are meshed, the half gear 32 can drive the toothed belt 35 to rotate, and the toothed belt 35 and the gear ring 18 are meshed, so that the support seat 17 can be driven to rotate through the gear ring 18, and the support seat 17 rests after rotating one hundred and eighty degrees.

[0040] The circulation mechanism includes a water tank 19, a water inlet 20 is opened on the top of the water tank 19, a water inlet pipe 26 is inserted on one side of the water tank 19, a water outlet pipe 27 is inserted on the other end of the water tank 19, a one-way valve 28 is movably inserted inside the water outlet pipe 27, one end of the pipe 29 is connected to the water inlet pipe 26, and the other end of the pipe 29 is connected to the water outlet pipe 27, and the water outlet pipe 27 is connected to the half gear 32 through a conveying component.

[0041] The conveying assembly includes a piston cylinder 21, a water outlet pipe 27 is connected to the piston cylinder 21, a piston plate 22 is slidably inserted inside the piston cylinder 21, the piston plate 22 is connected to the water tank 19 through an elastic structure, a pushing member 25 is fixedly installed below the piston plate 22, the pushing member 25 slides through the water tank 19, a rack 30 is fixedly installed below the pushing member 25, and the rack 30 is meshed with the half gear 32.

[0042] The elastic structure includes a column 23 and a second spring 24. The column 23 is fixedly installed inside the water tank 19. The column 23 and the piston plate 22 are slidably connected. The second spring 24 is movably sleeved outside the column 23. The second spring 24 and the piston plate 22 are fixedly connected.

[0043] Furthermore, the coolant is injected into the water tank 19 from the inside of the water inlet 20, and the half gear 32 is meshed with the rack 30. When the half gear 32 rotates, it drives the rack 30 to move downward, and the rack 30 drives the piston plate 22 to move downward inside the piston cylinder 21 through the pusher 25. At this time, the piston plate 22 slides on the outside of the column 23, and the No. 2 spring 24 is deformed by the force. The piston plate 22 transports the coolant inside the piston cylinder 21 to the inside of the pipe 29 through the water outlet pipe 27, and the coolant inside the pipe 29 can enter the inside of the water tank 19 through the water inlet pipe 26, so that the coolant can circulate inside the pipe 29. The pipe 29 is in contact with the No. 1 bulb 3, which can dissipate heat for the No. 1 bulb 3, and the edge of the pipe 29 is thinner than the middle thickness, which can amplify the light.

[0044] It should be noted that when the half gear 32 is not engaged with the rack 30, under the elastic force of the No. 2 spring 24, the No. 2 spring 24 drives the piston plate 22 to move to the top of the piston cylinder 21. Under the action of the one-way valve 28, the water inside the water outlet pipe 27 will not flow back into the interior of the piston cylinder 21. When the piston plate 22 moves to the top of the piston cylinder 21, the water inside the water tank 19 can flow into the interior of the piston cylinder 21.

[0045] Working principle: insert the No. 1 bulb 3 and the No. 2 bulb 4 into the two groups of grooves 13 respectively, and the No. 1 bulb 3 and the No. 2 bulb 4 can slide inside the slide groove 9. In the initial state, the No. 1 bulb 3 is in contact with the connecting piece 6, and the No. 2 bulb 4 is not in contact with the connecting piece 6, that is, the No. 1 bulb 3 is lit, and the No. 2 bulb 4 is not lit. The rotating assembly drives the support seat 17 to rotate, thereby driving the support frame 7 to rotate. The support frame 7 rotates ninety degrees. At this time, the No. 1 bulb 3 is located below the No. 2 bulb 4. Under the action of gravity, the counterweight block 10 drives the No. 2 bulb 4 to move in the direction of the connecting piece 6 inside the slide groove 9. At this time, the No. 2 bulb 4 is in contact with the connecting piece 6 and the No. 2 bulb 4 is lit.

[0046] At the same time, when the counterweight 10 moves to the position of the limiting hole 12, under the elastic force of the No. 1 spring 14, the No. 1 spring 14 pushes the limiting block 11 out from the inside of the groove 13, and the limiting block 11 passes through the limiting hole 12, so that the counterweight 10 can be fixed to the support frame 7, thereby limiting the movement of the No. 2 bulb 4.

[0047] At the same time, when the support frame 7 rotates, it can drive the limit block 11 and the fixed block 15 that cooperate with the number one bulb 3 to contact, and the fixed block 15 pushes the limit block 11 to the inside of the groove 13. At this time, the number one spring 14 is deformed by the force. When the support frame 7 rotates ninety degrees, under the action of gravity, the counterweight block 10 can drive the number one bulb 3 away from the connecting piece 6, and the number one bulb 3 does not emit light.

[0048] When the first bulb 3 and the second bulb 4 rotate, they come into contact with the brush 16 , and the brush 16 can clean the dust on the surface of the first bulb 3 and the second bulb 4 .

[0049] The motor 31 is connected to an external power source, and the motor 31 drives the half gear 32 to rotate. Under the action of the rotating shaft 33 and the column gear 34, since the toothed belt 35 and the half gear 32 are meshed, the half gear 32 can drive the toothed belt 35 to rotate. The toothed belt 35 and the gear ring 18 are meshed, so that the support seat 17 can be driven to rotate through the gear ring 18. The support seat 17 stops after rotating 180 degrees.

[0050] The coolant is injected into the water tank 19 from the inside of the water inlet 20, and the half gear 32 is meshed with the rack 30. When the half gear 32 rotates, it drives the rack 30 to move downward. The rack 30 drives the piston plate 22 to move downward inside the piston cylinder 21 through the pusher 25. At this time, the piston plate 22 slides on the outside of the column 23, and the No. 2 spring 24 is deformed by the force. The piston plate 22 transports the coolant inside the piston cylinder 21 to the inside of the pipe 29 through the water outlet pipe 27. The coolant inside the pipe 29 can enter the inside of the water tank 19 through the water inlet pipe 26, thereby realizing the internal circulation of the coolant in the pipe 29. The pipe 29 is in contact with the No. 1 bulb 3, and can dissipate the heat of the No. 1 bulb 3.

[0051] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A liquid crystal display screen with a graded heat dissipation function, comprising a display screen body (1), characterized in that: A back panel (2) is fixedly mounted on the back of the display screen body (1), and light-emitting mechanisms are evenly arranged on the outer side of the back panel (2), the light-emitting mechanisms comprising a first light bulb (3) and a second light bulb (4), a connecting piece (6) is arranged between the first light bulb (3) and the second light bulb (4), and the connecting piece (6) is connected to the first light bulb (3) and the second light bulb (4) through an adjusting device, and a pipe (29) is detachably mounted on a side of the back panel (2) away from the display screen body (1), the pipe (29) is in contact with the first light bulb (3), and a circulation mechanism is commonly mounted on both ends of the pipe (29).

2. The liquid crystal display screen with graded heat dissipation function according to claim 1, characterized in that: The adjusting device comprises a base (5), wherein the base (5) is fixedly mounted on a side of the back plate (2) away from the display screen body (1), the base (5) and the connecting member (6) are fixedly connected, the outer rotating sleeve of the base (5) is provided with a support seat (17), the outer portion of the support seat (17) is provided with a rotating assembly, a support frame (7) is fixedly mounted above the support seat (17), the inner portion of the support frame (7) is provided with two groups of mounting grooves (8), and the two groups of mounting grooves (8) are respectively plugged into and matched with the first light bulb (3) and the second light bulb (4).

3. The liquid crystal display screen with graded heat dissipation function according to claim 2, characterized in that: A slide groove (9) is provided inside the support frame (7), and the slide groove (9) is slidably connected to the first light bulb (3) and the second light bulb (4). A counterweight (10) is slidably inserted inside the slide groove (9), and the counterweight (10) is connected to the support frame (7) via a limiting structure.

4. The liquid crystal display screen with graded heat dissipation function according to claim 3, characterized in that: The limiting structure comprises a limiting block (11) and a groove (13); the groove (13) is provided below the counterweight block (10); the limiting block (11) is slidably inserted into the groove (13) via a spring (14); a limiting hole (12) is provided at the bottom of the support frame (7); the limiting block (11) slides through the limiting hole (12); a fixing block (15) is fixedly installed above the base (5); the fixing block (15) and the limiting block (11) are in contact and fit.

5. The liquid crystal display screen with graded heat dissipation function according to claim 2, characterized in that: A brush (16) is fixedly mounted above the base (5), and the brush (16) is in contact with the first light bulb (3) and the second light bulb (4).

6. The liquid crystal display screen with graded heat dissipation function according to claim 2, characterized in that: The rotating assembly comprises a gear ring (18), a rotating shaft (33), a column gear (34) and a toothed belt (35); the gear ring (18) is fixedly sleeved on the outside of the support seat (17); the rotating shaft (33) is rotatably mounted on the four corners of the back plate (2); the column gear (34) is fixedly sleeved on the outside of the rotating shaft (33); the outer sleeve of the column gear (34) is rotatably provided with a toothed belt (35); a power structure is provided on the outside of the toothed belt (35); and the toothed belt (35) is meshed with the gear ring (18).

7. The liquid crystal display screen with graded heat dissipation function according to claim 6, characterized in that: The power structure comprises a motor (31) and a half gear (32); the motor (31) is fixedly mounted below the back plate (2); the half gear (32) is fixedly sleeved on the output end of the motor (31); and the half gear (32) is meshed with a toothed belt (35).

8. The liquid crystal display screen with graded heat dissipation function according to claim 7, characterized in that: The circulation mechanism comprises a water tank (19), a water inlet (20) is provided on the top of the water tank (19), a water inlet pipe (26) is inserted on one side of the water tank (19), a water outlet pipe (27) is inserted on the other end of the water tank (19), a one-way valve (28) is movably inserted inside the water outlet pipe (27), one end of the pipe (29) is connected to the water inlet pipe (26), the other end of the pipe (29) is connected to the water outlet pipe (27), and the water outlet pipe (27) is connected to the half gear (32) via a conveying assembly.

9. The liquid crystal display screen with graded heat dissipation function according to claim 8, characterized in that: The conveying assembly comprises a piston cylinder (21), the water outlet pipe (27) is connected to the piston cylinder (21), a piston plate (22) is slidably inserted inside the piston cylinder (21), the piston plate (22) is connected to the water tank (19) via an elastic structure, a pushing member (25) is fixedly installed below the piston plate (22), the pushing member (25) slides through the water tank (19), a rack (30) is fixedly installed below the pushing member (25), and the rack (30) is meshed with a half gear (32).

10. The liquid crystal display screen with graded heat dissipation function according to claim 9, characterized in that: The elastic structure comprises a column (23) and a second spring (24); the column (23) is fixedly mounted inside the water tank (19); the column (23) and the piston plate (22) are slidably connected; the second spring (24) is movably sleeved outside the column (23); and the second spring (24) and the piston plate (22) are fixedly connected.

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