A liquid crystal display structure

Abstract

The application belongs to the technical field of liquid crystal display, and particularly relates to a liquid crystal display structure, which comprises a back shell, a control board, a light-reflecting substrate, a backlight assembly, a liquid crystal assembly and a front panel assembly, wherein the control board, the light-reflecting substrate, the backlight assembly and the liquid crystal assembly are arranged in the interior of the back shell, the front panel assembly is arranged at the end of the back shell, and further comprises: an air cavity, which is arranged in the interior of the light-reflecting substrate and is provided with a plurality of heat dissipation flow channels on the upper cavity wall. The backlight assembly of the liquid crystal display panel can be cooled according to the temperature of each region, the aging difference of the lamp beads is avoided to be too large, the liquid crystal display still maintains good light emission uniformity after long-term work, the possibility that the transparent panel and the mounting frame gap are blocked by dust can be reduced by using the tail gas flow, the influence of dust on the sealing performance of the sealing rubber strip is reduced, dust in the air flow can be intercepted, dust at the air inlet end can be automatically cleaned, and the heat dissipation effect is prevented from being affected.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of liquid crystal display, and particularly relates to a liquid crystal display structure. BACKGROUND

[0002] Liquid crystal displays are widely used in various fields of today's life, such as televisions, computers, mobile phones, tablets and the like, which present rich information with clear pictures, and the liquid crystal display controls the transmission and blocking of backlight light through the orientation change of liquid crystal molecules under the action of an electric field, so as to display different colors and images.

[0003] At present, liquid crystal displays are mainly divided into side-in type and direct type, the side-in type is to place LED lamp beads on the side of the liquid crystal panel, the light changes the propagation direction through the light guide plate, realizes uniform light emission, and the picture is presented, and the direct type is to uniformly distribute the LED lamp beads on the back of the liquid crystal panel, directly emits light to the panel, and adjusts the brightness of the picture by controlling the brightness of the lamp beads, such as the direct type backlight module and liquid crystal display disclosed in patent announcement No. CN105204228B;

[0004] The direct type liquid crystal display has many obvious advantages, such as good brightness uniformity, precise light control, easy realization of high contrast, and high-quality visual experience for users, however, it also has some potential problems, when a certain area of the liquid crystal display continuously displays a high-brightness image, the corresponding lamp bead needs to maintain a high-intensity light emitting working state for a long time, in this process, the lamp bead generates a large amount of heat, the temperature rises sharply, and then the aging process is accelerated, due to the difference in the work tasks of the lamp beads at different positions, the heat generated by them is different, over a long period of time, the aging degree of each lamp bead will gradually appear obvious difference, which will eventually cause the picture displayed by the liquid crystal display to deviate in brightness, seriously affecting the viewing effect and reducing the overall performance of the display. SUMMARY

[0005] The purpose of the present application is to solve the above problems, and provide a liquid crystal display structure.

[0006] In order to achieve the above purpose, the following technical scheme is adopted: a liquid crystal display structure, comprising a back shell, a control board, a light-reflecting substrate, a backlight assembly, a liquid crystal assembly and a front panel assembly, the control board, the light-reflecting substrate, the backlight assembly and the liquid crystal assembly are arranged in the interior of the back shell, the front panel assembly is arranged at the end of the back shell, and the liquid crystal display structure further comprises:

[0007] An air cavity is arranged in the interior of the light-reflecting substrate, and a plurality of heat dissipation channels are arranged on the upper cavity wall of the air cavity, and a hole adjusting mechanism is arranged in each heat dissipation channel.

[0008] The air inlet unit is arranged in the interior of the light-reflecting base plate, and the air outside is pressed into the interior of the air cavity by the air inlet unit;

[0009] The air outlet unit is arranged in the interior of the light-reflecting base plate, and the air flow discharged by each heat dissipation flow channel passes through the air outlet unit and is discharged, the interior of the air outlet unit is provided with a temperature measuring assembly, and the control panel controls the working of the aperture adjusting mechanism and the air inlet unit according to the electric signal fed back by the temperature measuring assembly.

[0010] Preferably, the front panel assembly comprises a mounting frame which is detachably connected with the end of the back shell, a supporting frame is mounted in the interior of the mounting frame, a transparent panel is arranged in the interior of the mounting frame, a sealing frame is fixedly mounted on the outer edge of the transparent panel, and a sealing rubber strip is arranged between the sealing frame and the supporting frame.

[0011] Preferably, each aperture adjusting mechanism comprises an exhaust plate fixedly mounted in the interior of the heat dissipation flow channel, a plurality of fixed exhaust holes are arranged on the end surface of the exhaust plate, a blocking plate is arranged above the exhaust plate, a plurality of movable exhaust holes are arranged on the end surface of the blocking plate, a mounting groove is arranged on the side wall of the heat dissipation flow channel, an electromagnetic column is fixedly mounted in the interior of the mounting groove, one end of the blocking plate is fixedly mounted with a connecting column, the end of the connecting column away from the blocking plate extends into the interior of the mounting groove, two elastic connecting belts are fixedly arranged between the side wall of the connecting column and the groove wall of the mounting groove, an iron column is fixedly mounted on the end of the connecting column away from the blocking plate, and the electromagnetic column is electrically connected with the control panel.

[0012] Preferably, the air inlet unit comprises a mounting sleeve fixedly inserted on the end surface of the light-reflecting base plate, two pistons are slidably arranged on the two sides in the interior of the mounting sleeve, a group of elastic connecting ropes are fixedly arranged between the side wall of each piston and the inner wall of the mounting sleeve, a pushing rod is fixedly mounted on the side wall of each piston opposite to the piston, a permanent magnet block is fixedly mounted on the end of each pushing rod opposite to the pushing rod, an electromagnetic block is fixedly mounted in the interior of the mounting sleeve at a position opposite to the two permanent magnet blocks, an air inlet dust filtering assembly is arranged on the side wall of the mounting sleeve between the two pistons, an air outlet hole is arranged on the side wall of the mounting sleeve and the light-reflecting base plate and communicates with the air cavity, a one-way valve is mounted in the interior of the air inlet dust filtering assembly and the air outlet hole, and the two electromagnetic blocks are electrically connected with the control panel.

[0013] Preferably, the air outlet unit comprises a groove plate fixedly inserted on the end surface of the light-reflecting base plate, and the groove plate is arranged on the side of the light-reflecting base plate away from the mounting sleeve, the groove plate communicates with each heat dissipation flow channel, and two tail gas holes are arranged on the side wall of the groove plate and the side wall of the light-reflecting base plate.

[0014] Preferably, the temperature measuring assembly comprises a plurality of insulating columns fixedly installed inside the groove plate, and the end of each insulating column is fixedly installed with a thermistor wire, and the end of each thermistor wire away from the same side insulating column extends into the corresponding heat dissipation flow channel, and the thermistor wire is electrically connected with the control panel.

[0015] Preferably, the inner wall of the mounting frame is provided with a frame-shaped groove outside the sealing rubber strip, the groove wall of the frame-shaped groove and the end face of the back shell are jointly provided with two air inlet grooves, the groove wall of the air inlet groove is provided with a circular hole, the inner wall of the back shell is fixedly installed with two annular rubber pads matched with the circular holes, and the two circular holes are communicated with the corresponding tail gas holes through the same side annular rubber pad.

[0016] Preferably, the air inlet dust filtering assembly comprises a three-way pipe arranged between the two pistons, and the three-way pipe is fixedly inserted with the side wall of the mounting sleeve, the air inlet end of the three-way pipe penetrates the side wall of the back shell, the air inlet end of the three-way pipe is internally provided with a dust filtering net cover, one of the one-way valves is arranged in one of the air outlet ends of the three-way pipe, a normally closed electric control valve is arranged in the other air outlet end of the three-way pipe, and a normally open electric control valve is arranged in the air outlet hole.

[0017] Compared with the prior art, the liquid crystal display structure has the following advantages:

[0018] 1. By cooperating the back shell, the control panel, the light-reflecting substrate, the backlight assembly, the liquid crystal assembly, the front panel assembly, the air cavity, the heat dissipation flow channel, the hole adjusting mechanism, the air inlet unit and the air outlet unit, by arranging a plurality of heat dissipation flow channels in the light-reflecting substrate, the heat of each LED lamp bead on the light-reflecting substrate can be quickly dissipated, and cooperating with the temperature measuring assembly, the heat dissipation air flow can be more fully utilized, the aging difference between the individual lamp bead and other lamp beads caused by long-time high-brightness work is avoided, the liquid crystal display can still maintain good light uniformity after long-time work, and the bright difference between the regions of the liquid crystal display after long-time use is not too large to affect the viewing.

[0019] 2. By arranging the frame-shaped groove, the air inlet groove, the circular hole and the annular rubber pad, the tail gas flow generated during heat dissipation can be utilized to generate air flow outside the gap between the transparent panel and the mounting frame, so that the possibility of dust blocking the gap between the transparent panel and the mounting frame can be reduced as much as possible, and the influence of dust and other impurities on the sealing performance of the sealing rubber strip can be reduced.

[0020] 3. By arranging the air inlet dust filtering assembly, the dust in the incoming air flow can be intercepted, the dust in the air flow is prevented from entering the heat dissipation flow channel to affect the heat dissipation effect, and the dust attached to the air inlet can be automatically cleaned after each air inlet period. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic diagram of a liquid crystal display structure provided by the present application;

[0022] Figure 2 is a structural schematic diagram of a front panel assembly of a liquid crystal display structure provided by the present application;

[0023] Figure 3 is a sectional structural schematic diagram of a light reflecting substrate of a liquid crystal display structure provided by the present application;

[0024] Figure 4 is a sectional structural schematic diagram of a light reflecting substrate of a liquid crystal display structure provided by the present application; Figure 3 is a structural enlarged view of part A in FIG. 4;

[0025] Figure 5 is a sectional structural schematic diagram of a light reflecting substrate of a liquid crystal display structure provided by the present application; Figure 3 is a structural enlarged view of part B in FIG. 4.

[0026] In the figure: 1 back shell, 2 control board, 3 light reflecting substrate, 4 back light assembly, 5 liquid crystal assembly, 6 front panel assembly, 61 mounting frame, 62 supporting frame, 63 transparent panel, 64 sealing frame, 65 sealing rubber strip, 7 air cavity, 8 heat dissipation flow channel, 9 adjusting hole mechanism, 91 exhaust plate, 92 fixed exhaust hole, 93 plugging plate, 94 movable exhaust hole, 95 mounting groove, 96 electromagnetic column, 97 connecting column, 98 elastic connecting belt, 99 iron column, 10 air inlet unit, 101 mounting sleeve, 102 piston, 103 elastic connecting rope, 104 pushing rod, 105 permanent magnet block, 106 electromagnetic block, 107 air outlet hole, 108 one-way valve, 11 air outlet unit, 111 groove plate, 112 tail gas hole, 12 temperature measuring assembly, 121 insulating column, 122 thermistor wire, 13 air inlet dust filtering assembly, 131 three-way pipe, 132 dust filtering net cover, 133 normally closed electric control valve, 134 normally open electric control valve, 14 frame type groove, 15 air inlet groove, 16 round hole, 17 annular rubber pad. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments of the present application.

[0028] As Figures 1-5As shown, a liquid crystal display structure includes a back shell 1, a control panel 2, a light reflecting substrate 3, a backlight assembly 4, a liquid crystal assembly 5 and a front panel assembly 6, the control panel 2, the light reflecting substrate 3, the backlight assembly 4 and the liquid crystal assembly 5 are arranged inside the back shell 1, the front panel assembly 6 is arranged at the end of the back shell 1, the front panel assembly 6 includes a mounting frame 61, the mounting frame 61 is detachably connected with the end of the back shell 1, a supporting frame 62 is arranged inside the mounting frame 61, a transparent panel 63 is arranged inside the mounting frame 61, a sealing frame 64 is fixedly arranged at the outer edge of the transparent panel 63, and a sealing rubber strip 65 is arranged between the sealing frame 64 and the supporting frame 62, which can seal and protect the connection between the mounting frame 61 and the transparent panel 63.

[0029] A gas cavity 7 is arranged inside the light reflecting substrate 3, and a plurality of heat dissipation channels 8 are arranged on the upper cavity wall of the gas cavity 7, each heat dissipation channel 8 is provided with a hole adjusting mechanism 9, each hole adjusting mechanism 9 includes an exhaust plate 91 fixedly arranged inside the heat dissipation channel 8, a plurality of fixed exhaust holes 92 are arranged on the end face of the exhaust plate 91, an occlusion plate 93 is arranged above the exhaust plate 91, a plurality of movable exhaust holes 94 are arranged on the end face of the occlusion plate 93, an installation groove 95 is arranged on the side wall of the heat dissipation channel 8, an electromagnetic column 96 is fixedly arranged inside the installation groove 95, a connecting column 97 is fixedly arranged at one end of the occlusion plate 93, and the other end of the connecting column 97 extends into the installation groove 95, two elastic connecting bands 98 are fixedly arranged between the side wall of the connecting column 97 and the groove wall of the installation groove 95, an iron column 99 is fixedly arranged at the other end of the connecting column 97, and the electromagnetic column 96 is electrically connected with the control panel 2.

[0030] An air inlet unit 10 is arranged inside the light reflecting substrate 3, which extrudes the external air into the gas cavity 7, the air inlet unit 10 includes a mounting sleeve 101 fixedly inserted into the end face of the light reflecting substrate 3, two pistons 102 are slidably arranged on the two sides of the inside of the mounting sleeve 101, a group of elastic connecting ropes 103 are fixedly arranged between the side wall of each piston 102 and the inner wall of the mounting sleeve 101, a push rod 104 is fixedly arranged on the side wall of each piston 102 opposite to the other, a permanent magnet block 105 is fixedly arranged on the opposite end of each push rod 104, an electromagnetic block 106 is fixedly arranged inside the mounting sleeve 101 at a position opposite to the two permanent magnet blocks 105, an air inlet dust filtering assembly 13 is arranged on the side wall of the mounting sleeve 101 between the two pistons 102, an air outlet hole 107 is arranged on the side wall of the mounting sleeve 101 and the light reflecting substrate 3, and the air outlet hole 107 is in communication with the gas cavity 7, a one-way valve 108 is arranged inside the air inlet dust filtering assembly 13 and the air outlet hole 107, and the two electromagnetic blocks 106 are electrically connected with the control panel 2.

[0031] The air inlet dust filtering assembly 13 comprises a three-way pipe 131 arranged between the two pistons 102 and fixedly inserted with the side wall of the mounting sleeve 101, the air inlet end of the three-way pipe 131 penetrates through the side wall of the back shell 1, the air inlet end of the three-way pipe 131 is internally provided with a dust filtering screen cover 132, one of the one-way valves 108 is arranged in the air outlet end of the three-way pipe 131, the other air outlet end of the three-way pipe 131 is internally provided with a normally closed electric control valve 133, the air outlet hole 107 is internally provided with a normally open electric control valve 134, and the dust filtering screen cover 132 can filter the dust in the entering air.

[0032] The air outlet unit 11 is arranged in the inside of the light-reflecting base plate 3, the air flow discharged from each heat dissipation flow channel 8 passes through the air outlet unit 11, the inside of the air outlet unit 11 is provided with the temperature measuring assembly 12, the control panel 2 controls the working of the hole adjusting mechanism 9 and the air inlet unit 10 according to the electric signal fed back by the temperature measuring assembly 12, the air outlet unit 11 comprises a groove plate 111 fixedly inserted with the end face of the light-reflecting base plate 3, the groove plate 111 is arranged on the side of the light-reflecting base plate 3 away from the mounting sleeve 101, the groove plate 111 is communicated with each heat dissipation flow channel 8, and the side wall of the groove plate 111 and the side wall of the light-reflecting base plate 3 are jointly provided with two tail gas holes 112.

[0033] The temperature measuring assembly 12 comprises a plurality of insulating columns 121 fixedly arranged in the inside of the groove plate 111, the end of each insulating column 121 is fixedly provided with a thermistor wire 122, the end of each thermistor wire 122 away from the same side insulating column 121 extends to the inside of the corresponding heat dissipation flow channel 8, the thermistor wire 122 is electrically connected with the control panel 2, and the thermistor wire 122 reduces the electric resistance with the temperature rising within a certain temperature range.

[0034] The inner wall of the mounting frame 61 is provided with a frame-shaped groove 14 at the position outside the sealing rubber strip 65, the groove wall of the frame-shaped groove 14 and the end face of the back shell 1 jointly provide two air inlet grooves 15, the groove wall of the air inlet groove 15 is provided with a circular hole 16, the inner wall of the back shell 1 is fixedly provided with two annular rubber pads 17 matched with the circular hole 16, the two circular holes 16 are communicated with the corresponding tail gas holes 112 through the same side annular rubber pad 17, and the annular rubber pad 17 can prevent the air flow from flowing away through the gap between the light-reflecting base plate 3 and the back shell 1.

[0035] The operation principle of the present application is described as follows: when the liquid crystal display works, the backlight assembly 4 emits light (the backlight module comprises a plurality of LED lamp beads, diffusion films, prism films and other components), the light irradiates to the liquid crystal assembly 5 after being processed by the diffusion films, prism films and other film sheets, and is projected to the front panel assembly 6 through the liquid crystal assembly 5, and the personnel can watch the image information displayed by the liquid crystal display through the transparent panel 63 of the front panel assembly 6, when the liquid crystal display works;

[0036] The control board 2 will connect the current signal intensity of each thermistor wire 122 to the connection loop of the measuring circuit of the control board 2. When the backlight assembly 4 is working, the temperature at the reflective substrate 3 will gradually increase due to the heat generated by the lamp beads. At this time, the temperature of the thermistor wire 122 will also increase. The resistance of the thermistor wire 122 will decrease with the increase of temperature in the range of -10℃ to 100℃. Therefore, after the temperature of the reflective substrate 3 increases, the control board 2 measures that the current signal intensity of the connection loop of the corresponding thermistor wire 122 becomes larger. When the current signal intensity exceeds 15mA, the control board 2 will start the heat dissipation work.

[0037] When the control board 2 starts the heat dissipation work, it will control the two electromagnetic blocks 106 to work at the frequency of 3 seconds of power-on and 3 seconds of power-off. When the electromagnetic block 106 is powered on, the electromagnetic block 106 generates a magnetic repulsion force to the same side permanent magnet block 105. Therefore, the permanent magnet block 105 will move the piston 102 away from the same side electromagnetic block 106 through the same side push rod 104, that is, the two pistons 102 move towards each other. Therefore, the air between the two pistons 102 will be squeezed. Under the action of the two one-way valves 108, the airflow can only pass through the air outlet hole 107 into the air cavity 7 and flow into each heat dissipation flow channel 8. When the control board 2 starts the heat dissipation work, it will also connect the connection loop between each electromagnetic column 96 and the corresponding thermistor wire 122. When the displayed image continuously maintains a high-brightness state, the LED lamp bead at the corresponding position needs to maintain high-brightness work. At this time, the heat generated by the LED lamp bead increases, so the temperature of the corresponding area also increases. At this time, the temperature detected by the thermistor wire 122 at this position also increases, so the resistance of the connection loop between the thermistor wire 122 and the corresponding electromagnetic column 96 decreases. Therefore, the current intensity flowing into the electromagnetic column 96 also increases. After the electromagnetic column 96 is powered on, it generates a magnetic attraction force to the same side iron column 99. The greater the current flowing into the electromagnetic column 96, the greater the magnetic attraction force of the electromagnetic column 96 to the iron column 99. Therefore, the displacement distance of the iron column 99 pulling the blocking plate 93 through the connecting column 97 is greater. At this time, the movable exhaust hole 94 on the blocking plate 93 gradually coincides with the fixed exhaust hole 92 on the exhaust plate 91, so the air flow aperture for the heat dissipation flow channel 8 increases. Therefore, the air flow aperture for the corresponding position of the reflective substrate 3 increases, so the air flow passing through this position increases, and the heat dissipation efficiency of this position increases. Conversely, in the area with low temperature, the heat dissipation efficiency decreases. By reducing the air flow passing through the area with low temperature and increasing the air flow passing through the area with high temperature, the temperature difference of the LED lamp beads in each area can be reduced as much as possible, so that the aging degree of each LED lamp bead can be kept as close as possible. In this way, the aging degree difference of the LED lamp beads can be avoided to be too large, which can avoid the phenomenon that the brightness deviation of the displayed image is too large.

[0038] Secondly, the air flow through each heat dissipation flow channel 8 will enter the inside of the groove plate 111, and pass through two tail gas holes 112, the annular rubber pad 17, the round hole 16, the air inlet groove 15 and the frame-shaped groove 14, so that the air flow finally enters the connecting gap between the mounting frame 61 and the transparent panel 63, and then the air flow is discharged outward through the connecting gap, so that the dust and other impurities in the connecting gap can be blown away, and the dust is prevented from entering the inside of the liquid crystal display and affecting the working quality of the liquid crystal display.

[0039] Wherein, after the controller starts the heat dissipation work, the timing module of the controller will be used to time, and after timing for 1 hour, the normally open electric control valve 134 and the normally closed electric control valve 133 will be controlled to be powered on for 10 seconds. After the normally open electric control valve 134 and the normally closed electric control valve 133 are powered on, the air pushed by the two pistons 102 cannot be discharged through the air outlet hole 107, but can only be discharged outward in the reverse direction through the three-way pipe 131. The air flow discharged outward can blow away the dust attached to the surface of the filter screen cover, so that the dust can be prevented from affecting the filtering effect of the filter screen cover.

[0040] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A liquid crystal display structure, comprising a back shell (1), a control board (2), a reflective substrate (3), a backlight assembly (4), a liquid crystal assembly (5), and a front panel assembly (6), wherein the control board (2), the reflective substrate (3), the backlight assembly (4), and the liquid crystal assembly (5) are all disposed inside the back shell (1), and the front panel assembly (6) is disposed at the end of the back shell (1), characterized in that, Also includes: An air cavity (7) is formed inside the reflective substrate (3), and the upper cavity wall of the air cavity (7) is provided with multiple heat dissipation channels (8), and each heat dissipation channel (8) is equipped with an adjustment hole mechanism (9). An air intake unit (10) is disposed inside the reflective substrate (3). The air intake unit (10) compresses external air into the air chamber (7). An air outlet unit (11) is installed inside the reflective substrate (3). The airflow discharged from each heat dissipation channel (8) is discharged through the air outlet unit (11). A temperature measuring component (12) is installed inside the air outlet unit (11). The control board (2) controls the adjustment mechanism (9) and the air inlet unit (10) to work according to the electrical signal fed back by the temperature measuring component (12). Each of the aforementioned adjustment mechanisms (9) includes an exhaust plate (91) fixedly installed inside the heat dissipation channel (8). The exhaust plate (91) has multiple fixed exhaust holes (92) on its end face. A sealing plate (93) is provided above the exhaust plate (91), and the sealing plate (93) has multiple movable exhaust holes (94) on its end face. The side wall of the heat dissipation channel (8) has an installation groove (95), and an electromagnetic column (96) is fixedly installed inside the installation groove (95). A connecting column (97) is fixedly installed at one end of the sealing plate (93), and the end of the connecting column (97) away from the sealing plate (93) extends into the interior of the installation groove (95). Two elastic connecting strips (98) are fixedly provided between the side wall of the connecting column (97) and the groove wall of the installation groove (95). An iron column (99) is fixedly installed at the end of the connecting column (97) away from the sealing plate (93). The electromagnetic column (96) is electrically connected to the control board (2). The air intake unit (10) includes a mounting sleeve (101) fixedly inserted into the end face of the reflective substrate (3). Two pistons (102) are slidably arranged on both sides inside the mounting sleeve (101), and a set of elastic connecting ropes (103) are fixedly arranged between the side walls of the two pistons (102) and the inner wall of the mounting sleeve (101). Push rods (104) are fixedly installed on the side walls of the opposite sides of the two pistons (102), and permanent magnet blocks (105) are fixedly installed on the opposite ends of the two push rods (104). The interior of the mounting sleeve (101) is located in Electromagnetic blocks (106) are fixedly installed on opposite sides of the two permanent magnet blocks (105). An air intake dust filter assembly (13) is provided on the side wall of the mounting sleeve (101) between the two pistons (102). An air outlet hole (107) is opened on the side wall of the mounting sleeve (101) and the reflective substrate (3), and the air outlet hole (107) is connected to the air chamber (7). A one-way valve (108) is installed inside the air intake dust filter assembly (13) and the air outlet hole (107). Both of the electromagnetic blocks (106) are electrically connected to the control board (2).

2. The liquid crystal display structure according to claim 1, characterized in that, The front panel assembly (6) includes a mounting frame (61), which is detachably connected to the end of the back shell (1). A support frame (62) is installed inside the mounting frame (61). A transparent panel (63) is provided inside the mounting frame (61), and a sealing frame (64) is fixedly installed on the outer edge of the transparent panel (63). A sealing strip (65) is provided between the sealing frame (64) and the support frame (62).

3. The liquid crystal display structure according to claim 2, characterized in that, The exhaust unit (11) includes a slot plate (111) fixedly inserted into the end face of the reflective substrate (3), and the slot plate (111) is located on the side of the reflective substrate (3) away from the mounting sleeve (101). The slot plate (111) is connected to each heat dissipation channel (8). The side wall of the slot plate (111) and the side wall of the reflective substrate (3) are provided with two exhaust holes (112).

4. A liquid crystal display structure according to claim 2, characterized in that, The temperature measuring component (12) includes multiple insulating pillars (121) fixedly installed inside the slot plate (111), and each insulating pillar (121) has a thermistor wire (122) fixedly installed at its end. The end of each thermistor wire (122) away from the insulating pillar (121) on the same side extends into the corresponding heat dissipation channel (8). The thermistor wire (122) is electrically connected to the control board (2).

5. A liquid crystal display structure according to claim 3, characterized in that, The inner wall of the mounting frame (61) is provided with a frame-shaped groove (14) located outside the sealing strip (65). The groove wall of the frame-shaped groove (14) and the end face of the back shell (1) are provided with two air inlet grooves (15). The groove wall of the air inlet groove (15) is provided with a round hole (16). The inner wall of the back shell (1) is fixedly installed with two annular rubber pads (17) that match the round holes (16). The two round holes (16) are connected to the corresponding exhaust port (112) through the annular rubber pads (17) on the same side.

6. The liquid crystal display structure according to claim 1, characterized in that, The air intake dust filter assembly (13) includes a three-way pipe (131) disposed between two pistons (102), and the three-way pipe (131) is fixedly inserted into the side wall of the mounting sleeve (101). The air intake end of the three-way pipe (131) penetrates the side wall of the back shell (1). A dust filter cover (132) is installed inside the air intake end of the three-way pipe (131). One of the one-way valves (108) is disposed inside one of the air outlet ends of the three-way pipe (131). A normally closed solenoid valve (133) is installed inside the other air outlet end of the three-way pipe (131). A normally open solenoid valve (134) is installed inside the air outlet (107).

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