Liquid crystal display screen with heat dissipation function

Abstract

The present invention relates to the technical field of display screens, and in particular to a liquid crystal display screen with a heat dissipation function, comprising a fixing frame, a display, an electric reel and a protective film, etc.; the fixing frame is equipped with a display; the display has two placement cavities; each placement cavity is equipped with an electric reel; the two electric reels jointly reel up a protective film for protecting the display; the left and right sides of the display each have a through slot, and the two through slots are respectively connected to the corresponding placement cavities. The bristles on the rotating rod are used to brush and clean the protective film passing through, and the dust attached to the surface of the protective film is brushed off to facilitate the subsequent recycling of the protective film. By making the through slot and the through slot vertical again, the bristles are driven to rotate and isolate from the outside world, and the through slot is re-sealed to prevent external dust from contacting the bristles and affecting its subsequent cleaning effect.

Description

Technical Field

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

[0002] In modern society, multimedia LCD screens have become a crucial medium for information dissemination in outdoor venues like bus stops and tourist attractions. These devices not only display real-time news and video ads, but also significantly enhance user engagement through integrated touch interaction modules, thereby enhancing advertising effectiveness. However, due to long-term outdoor exposure, dust easily accumulates on the screen surface. Frequent touch interactions also leave fingerprints and stains. These multiple sources of contamination gradually reduce the screen's light transmittance and touch sensitivity. This persistent performance degradation not only affects visual presentation but also diminishes the human-computer interaction experience, ultimately negatively impacting information delivery efficiency and user satisfaction. Summary of the Invention

[0003] In order to overcome the shortcomings of display devices being exposed to the outdoors for a long time, which easily cause environmental dust to accumulate on their surfaces, and frequent touch interactions leading to residual fingerprint stains, the superposition of multiple pollution sources will gradually reduce the screen transmittance and touch sensitivity. The present invention provides a liquid crystal display screen with heat dissipation function.

[0004] The technical implementation scheme of the present invention is: a liquid crystal display screen with a heat dissipation function, including a fixing frame and a display; the fixing frame is equipped with a display; it also includes an electric winding drum, a protective film, a motor, a rotating rod, bristles and a cleaning unit; the display has two placement cavities; each placement cavity is equipped with an electric winding drum; the two electric winding drums jointly wind up a protective film for protecting the display; the left and right sides of the display are each provided with a through slot, and the two through slots are respectively connected to the corresponding placement cavities; each through slot is rotatably connected to a rotating rod; a number of motors with the same number as the rotating rods are fixed in the display, and the output shaft of each motor is respectively fixed to the corresponding rotating rod; each rotating rod has a through slot, and each through slot is fixed with a number of bristles; the fixing frame is connected to a cleaning unit for cleaning the protective film.

[0005] Optionally, the cleaning unit includes a liquid storage tank, an infusion tube and a wiping sponge; a wiping sponge is fixedly connected to each placement cavity, and each wiping sponge is in contact with the protective film; a liquid storage tank is detachably connected to each placement cavity, and the liquid storage tank is filled with disinfectant alcohol; each liquid storage tank is connected to an infusion tube, an electric control valve is provided on the infusion tube, and the infusion tube is connected to the inside of the wiping sponge through several liquid outlets.

[0006] Optionally, it also includes an extrusion plate, an elastic telescopic rod and a pressing plate; a pressing plate is elastically connected to the upper and lower sides of the display; a number of elastic telescopic rods are fixed to the upper and lower sides of the display, and all the elastic telescopic rod telescopic parts on the same side are fixed to the corresponding pressing plate; a protrusion is provided on the left and right sides of each pressing plate; a squeezing plate is fixed to the upper and lower sides of each rotating rod, and the positions of the squeezing plates and the protrusions correspond to each other.

[0007] Optionally, the upper end of the pressing plate is configured as an inclined surface sloping downward from the back to the front.

[0008] Optionally, it also includes a cooling fan and a heat sink; several cooling fans are fixedly connected to the display; several air inlet holes are opened at positions corresponding to the cooling fans on the rear side of the display; several heat sinks for heat dissipation are fixedly connected to the display; several exhaust holes are opened on the partition inside the display, and the exhaust holes are connected to the placement cavity; each heat sink is located between two adjacent exhaust holes; several air outlet holes are opened on the left and right sides of the display, and the air outlet holes are connected to the placement cavity.

[0009] Optionally, a dustproof net is also included; a dustproof net is fixedly connected to the rear side of each cooling fan.

[0010] Optionally, a sliding block and a wedge block are also included; a sliding block is slidably connected to each of the left and right sides of the display, the sliding block is made of high-density metal material, each sliding block has several through holes, and the through holes correspond to the air outlet holes; a wedge-shaped portion is provided on the lower side of each sliding block; each rotating rod is fixed with a wedge block, and the wedge block corresponds to the wedge-shaped portion of the sliding block.

[0011] Optionally, a rain shield is also included; the fixing frame is fixed with the rain shield for shielding and diverting rainwater, and the rain shield is located above the display.

[0012] Optionally, a drainage pipe is further included; a circular collection groove is opened on the upper edge of the rain shield; a drainage pipe is fixedly connected to the left and right sides of the fixing frame, and all the drainage pipes are connected to the collection groove.

[0013] Optionally, the distance between the outlet of the drain pipe and the ground is less than .

[0014] The present invention has the following advantages:

[0015] The bristles on the rotating rod are used to brush and clean the protective film passing through, and the dust attached to the surface of the protective film is brushed off to facilitate the subsequent recycling of the protective film; and after the protective film completes the winding and switching, the motor is controlled to drive the rotating rod to rotate, so that the through groove and the through groove are vertical again, thereby driving the bristles to rotate and isolate them from the outside world, and re-sealing the through groove to prevent external dust from contacting the bristles and affecting its subsequent cleaning effect.

[0016] The upper and lower ends of the protective film are pressed against the surface of the display screen by the pressing plate, thereby closing the gap between the two and preventing external dust from entering between the display screen and the protective film, thereby reducing the transmittance and touch sensitivity of the display screen.

[0017] By moving the sliding block upward, the through hole and the air outlet are staggered, and the sliding block blocks the air outlet, so that the heat-dissipating gas is blown out through the through groove, and then the bristles on the through groove are recoiled, and the dust remaining on the bristles is blown off, thereby ensuring the cleaning effect of the bristles for continuous use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a liquid crystal display screen with heat dissipation function disclosed in the present invention;

[0019] Figure 2 This is a schematic diagram of the back structure of the liquid crystal display screen with heat dissipation function disclosed in the present invention;

[0020] Figure 3 A schematic diagram of the internal structure of the display disclosed by the liquid crystal display screen with heat dissipation function of the present invention;

[0021] Figure 4 This is a schematic diagram of the combined structure of the display, electric winding drum, liquid storage tank, infusion tube and wiping sponge disclosed in the liquid crystal display screen with heat dissipation function of the present invention;

[0022] Figure 5 This is a schematic diagram of the combined structure of the display, electric winding drum, protective film, motor and rotating rod disclosed in the liquid crystal display screen with heat dissipation function of the present invention;

[0023] Figure 6 This is a schematic diagram of the combined structure of the rotating rod and brush bristles disclosed in the liquid crystal display screen with heat dissipation function of the present invention;

[0024] Figure 7 This is a schematic diagram of the combined structure of the rotating rod, the extrusion plate, the elastic telescopic rod and the pressing plate disclosed in the liquid crystal display screen with heat dissipation function of the present invention;

[0025] Figure 8 A schematic diagram of the combined structure of a heat dissipation fan, heat sink, and dust screen disclosed in the liquid crystal display screen with heat dissipation function of the present invention;

[0026] Figure 9 A diagram showing a state in which the sliding block of the liquid crystal display screen with heat dissipation function according to the present invention moves to block the air outlet;

[0027] Figure 10 A schematic diagram of the combined structure of the rotating rod, the sliding block and the wedge-shaped block disclosed in the liquid crystal display screen with heat dissipation function of the present invention;

[0028] Figure 11 This is a schematic diagram of the combined structure of a rain shield and a drain pipe disclosed in the liquid crystal display screen with heat dissipation function of the present invention.

[0029] The meanings of the reference numerals in the figure are: 1-fixed frame, 2-display, 3-electric winding drum, 4-protective film, 5-motor, 6-rotating rod, 7-bristles, 101-liquid storage tank, 102-infusion tube, 103-wiping sponge, 111-squeezing plate, 112-elastic telescopic rod, 113-pressing plate, 201-cooling fan, 202-heat sink, 203-dust net, 211-sliding block, 212-wedge block, 301-rain shield, 302-drain pipe, 01-placing cavity, 02-through groove, 03-air inlet, 04-exhaust hole, 05-air outlet, 601-through groove, 11301-bump, 21101-through hole, 21102-wedge portion, 30101-collecting groove. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions, and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings. It is hereby stated that any directional terms such as "up," "down," "left," "right," "front," "back," "inside," and "outside" that appear or will appear herein are based solely on the accompanying drawings and are not intended to limit the present invention.

[0031] Example 1

[0032] A liquid crystal display with heat dissipation function, such as Figure 1-Figure 7 As shown, it includes a fixing frame 1 and a display 2; the fixing frame 1 is installed with the display 2;

[0033] It also includes an electric winding drum 3, a protective film 4, a motor 5, a rotating rod 6, bristles 7 and a cleaning unit; the display 2 has two placement cavities 01; each placement cavity 01 is equipped with an electric winding drum 3; the two electric winding drums 3 jointly wind up a protective film 4; the left and right sides of the display 2 each have a through slot 02, and the two through slots 02 are respectively connected to the corresponding placement cavity 01; each through slot 02 is rotatably connected to a rotating rod 6; a number of motors 5 with the same number as the rotating rods 6 are fixed in the display 2, and the output shaft of each motor 5 is respectively fixed to the corresponding rotating rod 6; each rotating rod 6 has a through slot 601, and each through slot 601 is fixed with a number of bristles 7, the protective film 4 covers the display part on the front side of the display 2, and the two ends respectively pass through the through slot 601 of the rotating rod 6 from the through slot 02, enter the placement cavity 01, and are respectively wound up in the two electric winding drums 3 in the placement cavity 01; the fixing frame 1 is connected to the cleaning unit.

[0034] The cleaning unit includes a liquid storage tank 101, an infusion tube 102 and a wiping sponge 103; a wiping sponge 103 is fixedly connected to each placement cavity 01, and each wiping sponge 103 is in contact with the protective film 4; a liquid storage tank 101 is bolted to each placement cavity 01, and the liquid storage tank 101 is filled with disinfectant alcohol; each liquid storage tank 101 is connected to an infusion tube 102, and an electric control valve is provided on the infusion tube 102, and the infusion tube 102 is connected to the inside of the wiping sponge 103 through several liquid outlets.

[0035] It also includes an extrusion plate 111, an elastic telescopic rod 112 and a pressing plate 113; a pressing plate 113 is elastically connected to the upper and lower sides of the display 2; a number of elastic telescopic rods 112 are fixedly connected to the upper and lower sides of the display 2, and the telescopic parts of all the elastic telescopic rods 112 on the same side are fixedly connected to the corresponding pressing plates 113. The upper and lower sides of the protective film 4 are covered and pressed by the two pressing plates 113, thereby preventing external dust from entering between the protective film 4 and the display 2 through the gap on the upper or lower side of the protective film 4, affecting the display clarity of the display 2; a protrusion 11301 is provided on the left and right sides of each pressing plate 113; a squeezing plate 111 is fixedly connected to the upper and lower sides of each rotating rod 6, and the squeezing plate 111 corresponds to the position of the protrusion 11301.

[0036] The upper end of the pressing plate 113 is configured as an inclined surface sloping downward from the back to the front, which can guide the dust falling on the pressing plate 113 and prevent the dust from remaining on the pressing plate 113 .

[0037] When the display screen is working outdoors, environmental dust easily accumulates on its surface. In addition, frequent touch interactions lead to residual fingerprint stains. The superposition of multiple pollution sources will gradually reduce the screen transmittance and touch sensitivity. Therefore, a protective film 4 is set on the front side of the screen of the display 2, and the screen of the display 2 is covered and protected by the protective film 4 to prevent external dust or fingerprint stains from touch interactions from remaining directly on the screen surface of the display 2, thereby reducing its screen transmittance and touch sensitivity. Moreover, when the display 2 is working, one of the electric winding drums 3 is regularly controlled to rotate and rewind the protective film 4, and the other electric winding drum 3 is rotated to release the protective film 4, so that the part of the protective film 4 with residual dust and stains is rewound and transferred, and the clean part of the protective film 4 is pulled out and re-covered in front of the screen of the display 2, thereby ensuring that the screen transmittance and touch sensitivity of the display 2 are always maintained in a good state when the display 2 is working.

[0038] Moreover, initially, the through slot 601 of the rotating rod 6 is perpendicular to the through slot 02, and the through slot 02 is blocked by the rotating rod 6. When the electric reel 3 rotates to rewind the protective film 4, the motor 5 is first controlled to drive the rotating rod 6 to rotate so that the through slot 601 is aligned with the through slot 02. Figure 6As shown, the electric reel 3 is then controlled to rotate to reel in and unreel the protective film 4; and in the process of reeling in the protective film 4, the bristles 7 on the rotating rod 6 are used to brush and clean the protective film 4 passing through the through groove 601, and the dust attached to the surface of the protective film 4 is brushed off to facilitate the subsequent recycling of the protective film 4.

[0039] At the same time, it is taken into consideration that if the bristles 7 are always in contact with the outside world, the dust from the outside will adhere to the bristles 7 after long-term use, reducing the cleanliness of the bristles 7, and thus reducing the cleaning effect of the bristles 7 on the protective film 4. Therefore, when the protective film 4 completes the winding switch, the motor 5 is then controlled to drive the rotating rod 6 to rotate, so that the through groove 601 and the through groove 02 are vertical again, thereby driving the bristles 7 to rotate and isolate them from the outside world, and re-blocking the through groove 02 to prevent the dust from the outside from contacting the bristles 7 and affecting its subsequent cleaning effect; and the motor 5 on the left is controlled to drive the rotating rod 6 to rotate clockwise when viewed from top to bottom, and the motor 5 on the right is controlled to drive the rotating rod 6 to rotate counterclockwise when viewed from top to bottom, and the rotating rods 6 on both sides are rotated in opposite directions, thereby tightening the part of the protective film 4 covering the front of the display 2 screen to prevent it from wrinkling during the winding and switching process, affecting the transmittance of the display 2 screen.

[0040] Secondly, when the dust on the surface of the protective film 4 is brushed off and cleaned by the bristles 7, there are still residual fingerprints on the surface of the protective film 4, which are subsequently reeled into the electric reel 3, which is easy to cause cross contamination. Therefore, in the process of reeling and switching the protective film 4, the electric control valve on the infusion tube 102 is controlled to open at the same time, and the disinfectant alcohol in the storage tank 101 is transported to the wiping sponge 103 through the infusion tube 102. After the protective film 4 is cleaned by the bristles 7 and enters the placement cavity 01, the protective film 4 passes through the wiping sponge 103, and the surface of the protective film 4 is wiped and disinfected by the wiping sponge 103. The disinfected protective film 4 is finally reeled into the electric reel 3, thereby avoiding the problem of cross contamination between the reeled protective films 4.

[0041] It is also taken into consideration that when the protective film 4 is pulled out to cover the surface of the display screen 2, there is a gap between the upper and lower ends of the protective film 4 and the display screen 2, and external dust can easily enter between the display screen 2 and the protective film 4 through the gap, thereby reducing the light transmittance and touch sensitivity of the display screen 2; therefore, when the protective film 4 covers the surface of the display screen 2, the pressing plate 113 presses the upper and lower ends of the protective film 4 to fit the surface of the display screen 2 under the action of the elastic telescopic rod 112, thereby closing the gap between the two and preventing external dust from entering between the display screen 2 and the protective film 4, thereby reducing the light transmittance and touch sensitivity of the display screen 2; and, when the reeling and switching are required, When the protective film 4 is wound, the motor 5 drives the rotating rod 6 to rotate, and the rotating rod 6 drives the squeezing plate 111 to rotate. The squeezing plate 111 rotates to squeeze the protrusion 11301 of the pressing plate 113, pushing the pressing plate 113 to move and separate from the screen of the display 2. The elastic telescopic rod 112 is stretched, thereby stopping the pressing on the upper and lower ends of the protective film 4. When the winding switching of the protective film 4 is completed, the motor 5 drives the rotating rod 6 to rotate and reset, the squeezing plate 111 stops squeezing the protrusion 11301, and the pressing plate 113 is reset under the action of the elastic telescopic rod 112, and continues to press the upper and lower ends of the protective film 4 to prevent external dust from entering and affecting the transmittance and touch sensitivity of the screen of the display 2.

[0042] In addition, the upper end of the pressing plate 113 is set as a slope sloping downward from the back to the front, which can guide the dust falling on the pressing plate 113 to prevent the dust from remaining on the pressing plate 113. When the pressing plate 113 is subsequently moved and opened, the dust is prevented from falling directly between the protective film 4 and the display 2 screen.

[0043] Example 2

[0044] On the basis of Example 1, Figure 3 and Figures 8-10 As shown, it also includes a cooling fan 201 and a heat sink 202; two cooling fans 201 are fixedly connected to the display 2; a plurality of air inlet holes 03 are opened at positions corresponding to the cooling fans 201 on the rear side of the display 2; a plurality of heat sinks 202 are fixedly connected to the display 2; a plurality of exhaust holes 04 are opened on the partition inside the display 2, and the exhaust holes 04 are connected to the placement cavity 01; each heat sink 202 is located between two adjacent exhaust holes 04; a plurality of air outlet holes 05 are opened on the left and right sides of the display 2, and the air outlet holes 05 are connected to the placement cavity 01.

[0045] It also includes a dustproof net 203; each cooling fan 201 is fixedly connected to a dustproof net 203 on the rear side, through which the blown gas can be filtered to isolate the dust in the gas, thereby preventing external dust from entering the display 2 and affecting the normal operation of the display 2.

[0046] It also includes a sliding block 211 and a wedge block 212; a sliding block 211 is slidably connected to the left and right sides of the display 2, and the sliding block 211 is set to a high-density metal material. Each sliding block 211 has a plurality of through holes 21101, and the through holes 21101 correspond to the air outlet 05; a wedge portion 21102 is provided on the lower side of each sliding block 211; each rotating rod 6 is fixed with a wedge block 212, and the wedge block 212 corresponds to the wedge portion 21102 of the sliding block 211.

[0047] When the display screen is working, a fan is usually set to dissipate heat for the display screen to prevent the working temperature from being too high, which may cause bulging, leakage, and failure of other key components of the electronic components inside the display screen. Therefore, when the display 2 is working, the cooling fan 201 is controlled to work at the same time, driving the external air flow into the interior of the display 2 from the air inlet 03, contacting the internal heat sink 202, and passing through the exhaust hole 04 and the placement cavity 01 in turn, and discharged to the outside world from the air outlet 05; the heat generated by the display 2 during operation is transferred to the heat sink 202, and the air flow is driven by the cooling fan 201 and contacts the heat sink 202, taking away the heat transferred to the heat sink 202, thereby dissipating the heat of the display 2.

[0048] At the same time, as the bristles 7 continue to brush and clean, the cleaned dust will gradually accumulate on the bristles 7, resulting in a decrease in the cleaning effect of the bristles 7, thereby affecting the cleaning efficiency of the protective film 4; therefore, when the motor 5 drives the rotating rod 6 to rotate so that the through groove 601 is aligned with the through groove 02, and the protective film 4 is wound and switched, the rotating rod 6 simultaneously drives the wedge block 212 to rotate and push the wedge-shaped portion 21102 of the sliding block 211, so that the sliding block 211 moves upward, and the through hole 21101 is staggered with the air outlet 05, and the sliding block 211 blocks the air outlet 05, which makes it impossible for the gas that passes through the exhaust hole 04 and enters the placement cavity 01 to be discharged outside through the air outlet 05 during the heat dissipation process. Boundary, and at this time the through groove 601 is oriented in the same direction as the through groove 02, and the through groove 601 is connected to the placement chamber 01. As the cooling fan 201 continues to rotate, the gas entering the placement chamber 01 is blown out from the through groove 601 under the action of air pressure, and then the bristles 7 on the through groove 601 are recoiled, and the dust remaining on the bristles 7 is blown off, thereby ensuring the cleaning effect of the bristles 7 for continuous use; when the winding switching of the protective film 4 is completed, the rotating rod 6 rotates and resets, and the rotating rod 6 drives the wedge block 212 to rotate and reset, and stops pushing and squeezing the sliding block 211. The sliding block 211 resets under the action of its own gravity, so that the through hole 21101 is aligned and connected with the air outlet 05 again.

[0049] It should be noted that the power of the cooling fan 201 can be intelligently controlled. During normal cooling, the cooling fan 201 is controlled to operate at a lower power, thereby reducing energy consumption during the cooling process. When the air outlet 05 is blocked and the bristles 7 are cleaned, the cooling fan 201 is controlled to operate at a higher power, thereby providing a stronger airflow to clean the bristles 7 and ensuring the cleaning effect of the bristles 7.

[0050] Example 3

[0051] On the basis of Example 2, Figure 1 and Figure 11 As shown, a rain shield 301 is also included; the fixing frame 1 is fixedly connected to the rain shield 301, and the rain shield 301 is located above the display 2.

[0052] It also includes a drainage pipe 302; a roundabout collection groove 30101 is opened on the upper edge of the rain shield 301; a drainage pipe 302 is fixed to the left and right sides of the fixing frame 1, and all the drainage pipes 302 are connected to the collection groove 30101.

[0053] The distance between the outlet of the drainage pipe 302 and the ground is less than 10 m to prevent splashing during drainage, which may affect pedestrians nearby.

[0054] Taking into account that the display screen is set in an outdoor environment, by setting a rain shield 301 above the display 2, the display 2 can be shielded from rain, preventing rain from falling directly on the display 2 and affecting the normal use of the display 2; at the same time, taking into account that if rainwater on the upper side of the rain shield 301 flows down from the edge of the rain shield 301, a water curtain will be formed in front of the display 2, which will make it inconvenient for the user to observe the display content of the display 2 and hinder the user's interactive use of the display 2. Therefore, a circular collection groove 30101 is provided on the rain shield 301. In the process of the rain shield 301 blocking rainwater, the rainwater on the upper side of the rain shield 301 can be guided to flow into the collection groove 30101 and discharged through the drain pipe 302, thereby preventing the blocked rainwater from flowing down from the edge of the rain shield 301 and forming a water curtain in front of the display 2, reducing the clarity of the display 2 and hindering the use of the display 2 by surrounding users; and the position of the pipe mouth of the drain pipe 302 is less than 10m away from the ground to prevent splashing during drainage and affecting surrounding pedestrians.

[0055] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A liquid crystal display screen with a heat dissipation function, comprising a fixing frame (1); a display (2) is mounted on the fixing frame (1); and characterized in that: The display (2) has two placement cavities (01); each placement cavity (01) is equipped with an electric reel (3); the left and right sides of the display (2) each have a through slot (02), and the two through slots (02) are connected to the corresponding placement cavity (01); each through slot (02) is rotatably connected to a rotating rod (6); the display (2) is fixed with the same number of motors (5) as the rotating rods (6), and the output shaft of each motor (5) is connected to the corresponding rotating rod (6) ) fixedly connected; each rotating rod (6) has a through slot (601), and each through slot (601) is fixedly connected with a plurality of bristles (7); the protective film (4) covers the display portion on the front side of the display (2), and the two ends respectively pass through the through slot (601) of the rotating rod (6) from the through slot (02), enter the placement cavity (01), and are respectively rolled up in the two electric winding drums (3) in the placement cavity (01); the fixing frame (1) is connected with a cleaning unit for cleaning the protective film (4); The device further comprises a pressing plate (113); a pressing plate (113) is elastically connected to the upper side and the lower side of the display (2); a plurality of elastic telescopic rods (112) are fixedly connected to the upper side and the lower side of the display (2); the telescopic parts of all the elastic telescopic rods (112) on the same side are fixedly connected to the corresponding pressing plate (113); a convex block (11301) is provided on the left and right sides of each pressing plate (113); a pressing plate (111) is fixedly connected to the upper side and the lower side of each rotating rod (6), and the positions of the pressing plates (111) and the convex blocks (11301) correspond to each other; The display (2) further comprises a heat dissipation fan (201); a plurality of heat dissipation fans (201) are fixedly connected inside the display (2); a plurality of air inlet holes (03) are opened at positions corresponding to the heat dissipation fans (201) on the rear side of the display (2); a plurality of heat dissipation fins (202) for heat dissipation are fixedly connected inside the display (2); a plurality of exhaust holes (04) are opened on a partition inside the display (2), and the exhaust holes (04) are communicated with the placement cavity (01); each heat dissipation fin (202) is located between two adjacent exhaust holes (04); a plurality of air outlet holes (05) are opened on the left and right sides of the display (2), and the air outlet holes (05) are communicated with the placement cavity (01); The invention also includes a sliding block (211); a sliding block (211) is slidably connected to the left and right sides of the display (2); the sliding block (211) is made of a high-density metal material; each sliding block (211) is provided with a plurality of through holes (21101), and the through holes (21101) correspond to the air outlet holes (05); a wedge-shaped portion (21102) is provided on the lower side of each sliding block (211); each rotating rod (6) is fixedly connected to a wedge-shaped block (212), and the wedge-shaped block (212) corresponds to the wedge-shaped portion (21102) of the sliding block (211).

2. The liquid crystal display with heat dissipation function according to claim 1, characterized in that: The cleaning unit comprises a wiping sponge (103); a wiping sponge (103) is fixedly connected in each placement cavity (01), and each wiping sponge (103) contacts the protective film (4); a liquid storage tank (101) is detachably connected in each placement cavity (01), and the liquid storage tank (101) is filled with disinfectant alcohol; each liquid storage tank (101) is connected to an infusion tube (102), an electric control valve is provided on the infusion tube (102), and the infusion tube (102) is connected to the inside of the wiping sponge (103) through a plurality of liquid outlets.

3. The liquid crystal display with heat dissipation function according to claim 2, characterized in that: The upper end of the pressing plate (113) is configured as an inclined surface that tilts downward from the back to the front.

4. The liquid crystal display with heat dissipation function according to claim 3, characterized in that: A dustproof net (203) is also included; a dustproof net (203) is fixedly connected to the rear side of each cooling fan (201).

5. The liquid crystal display with heat dissipation function according to claim 1, characterized in that: It also includes a rain shield (301); the fixing frame (1) is fixedly connected with the rain shield (301) for shielding and diverting rainwater, and the rain shield (301) is located above the display (2).

6. The liquid crystal display with heat dissipation function according to claim 5, characterized in that: It also includes a drainage pipe (302); a circular collection groove (30101) is opened on the upper edge of the rain shield (301); a drainage pipe (302) is fixedly connected to the left and right sides of the fixing frame (1), and all the drainage pipes (302) are connected to the collection groove (30101).

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