LCD display screen capable of adapting to outdoor severe environment

Abstract

The invention relates to an LCD display screen adaptable to an outdoor severe environment, and relates to the technical field of display screens, the LCD display screen comprises a shell, a screen is arranged on the side wall of the shell, a controller is arranged in the shell, the controller is electrically connected with the screen, and a base is arranged at the bottom of the shell; a plurality of humidity sensors are arranged outside the shell, and a plurality of heat dissipation openings are formed in the shell; a heat dissipation switching mechanism is arranged in the shell and comprises a plurality of sealing plate sets, the sealing plate sets correspond to the heat dissipation openings in a one-to-one mode, the corresponding heat dissipation openings are sealed by the sealing plate sets, the sealing plate sets are connected with the shell in a sliding mode, and a switching driving piece is arranged on the shell and connected with the sealing plate sets. And the switching driving piece is used for driving the closing plate group to open or close the corresponding heat dissipation opening. According to the application, the possibility that rainwater enters the LCD display screen can be reduced, so that the influence of rainstorm weather on the LCD display screen is reduced, and the adaptability of the LCD display screen to a severe environment is improved.

Description

Technical Field

[0001] This application relates to the technical field of display screens, and in particular, to an LCD display screen adaptable to harsh outdoor environments. Background Art

[0002] An advertising machine, also known as a poster machine, is a new generation of intelligent device. It constitutes a complete advertising broadcast control system through terminal software control, network information transmission, and multimedia terminal display, and conducts advertising promotion through multimedia materials such as pictures, texts, videos, and small plugins (weather, exchange rate, etc.). Advertising machines can be divided into two major categories: LCD advertising machines and LED advertising machines according to the material of the display screen body. Due to its advantages such as high definition and low power consumption, LCD display screens are widely used in outdoor advertising, information release, monitoring, and other fields.

[0003] Currently, an LCD display screen generally includes a screen, a housing, and a base. A controller for controlling the screen is integrated inside the housing, the screen is arranged on the housing, and the base is fixed to the bottom of the housing. When using the LCD display screen, the LCD display screen is generally installed at a corresponding position through the base, and the controller controls the screen to display corresponding advertising information.

[0004] In order to prevent the screen or the controller from overheating, existing LCD display screens often have heat dissipation holes opened on the housing so that the LCD display screen can dissipate heat quickly.

[0005] Since some existing LCD display screens are placed in outdoor environments such as bus stops, scenic spots, and outdoor squares, the LCD display screens will be in harsh weather conditions such as heavy rain. When the LCD display screen is used in rainy days, rainwater will enter the housing through the heat dissipation holes, and then it is easy for the rainwater to flow into the screen or the controller, which can easily cause the LCD display screen to be damaged and unable to be used. Summary of the Invention

[0006] This application provides an LCD display screen adaptable to harsh outdoor environments, aiming to reduce the possibility of rainwater entering the LCD display screen while ensuring the heat dissipation ability of the LCD display screen, thereby reducing the impact of heavy rain weather on the LCD display screen and increasing the adaptability of the LCD display screen to harsh environments.

[0007] The following technical solutions are adopted for the LCD display screen adaptable to harsh outdoor environments provided by this application: An LCD display screen adaptable to harsh outdoor environments, comprising a housing, a screen is provided on the side wall of the housing, a controller is provided inside the housing, the controller is electrically connected to the screen, and a base is provided at the bottom of the housing; a plurality of humidity sensors are provided outside the housing, and a plurality of heat dissipation openings are provided on the housing; a heat dissipation switching mechanism is provided inside the housing, the heat dissipation switching mechanism includes a plurality of closed plate groups, the closed plate groups are provided in one-to-one correspondence with the heat dissipation openings, the closed plate groups close the corresponding heat dissipation openings, the closed plate groups are slidably connected to the housing, a switching driving member is provided on the housing, the switching driving member is connected to the closed plate group, and the switching driving member is used to drive the closed plate group to open or close the corresponding heat dissipation opening.

[0008] By adopting the above technical solution, the LCD display screen can realize the functions of the LCD display screen through the cooperation of the screen, the housing, the controller and the base.

[0009] The opening of the heat dissipation openings on the housing realizes the normal heat dissipation of the screen and the controller inside the housing, ensuring that the LCD display screen can work for a long time. The setting of the humidity sensors on the housing can detect the environmental humidity in real time, and then detect whether it is raining in the environment where the LCD display screen is located. The heat dissipation switching mechanism inside the housing controls the opening and closing of the heat dissipation openings through the cooperation of the closed plate group and the switching driving member.

[0010] Under the combined action of the heat dissipation openings, the humidity sensors and the heat dissipation switching mechanism, on rainy days, the heat dissipation switching mechanism closes the heat dissipation openings to prevent rainwater from invading and protect the screen and the controller; on normal days, the heat dissipation switching mechanism opens the heat dissipation openings to ensure the heat dissipation efficiency. The humidity sensors monitor the external environmental humidity in real time, providing data support for the control of the heat dissipation openings, so as to achieve a dynamic balance between rain prevention and heat dissipation.

[0011] Optionally, an installation space is provided inside the housing, a heat conduction plate is provided inside the housing, the heat conduction plate is arranged parallel and spaced from the screen, and the heat conduction plate divides the installation space into two independent first spaces and second spaces along its own thickness direction, the screen and the controller are both located in the first space, the heat dissipation openings are communicated with the second space, and the closed plate group and the switching driving member are both located in the second space.

[0012] By adopting the above technical solution, the heat-conducting plate divides the installation space into an independent first space and a second space. Since the first space and the second space are independent of each other, the screen and the controller located in the first space can be protected from external moisture and dust. Moreover, the heat-conducting plate can conduct the heat generated by the screen and the controller to the second space in a timely manner. Since the heat dissipation port is communicated with the second space, heat can be dissipated quickly, preventing heat from accumulating in the second space. Therefore, the setting of the heat-conducting plate can further protect the screen and the controller, thereby reducing the impact of the environment on the LCD display screen and improving the adaptability of the LCD display screen to harsh environments.

[0013] Optionally, both the screen and the controller are attached to the heat-conducting plate, and a plurality of heat dissipation fins are arranged on the side of the heat-conducting plate facing away from the screen.

[0014] By adopting the above technical solution, both the screen and the controller are in direct contact with the heat-conducting plate, which enables the heat-conducting plate to efficiently conduct heat to the heat dissipation fins. The fins are used to increase the heat dissipation area and accelerate heat dissipation. Such a structural setting can accelerate the heat conduction of the heat-conducting plate and ensure the heat dissipation efficiency of the screen and the controller.

[0015] Optionally, a plurality of dust-proof net plates are arranged on the outer shell, and the dust-proof net plates are arranged in one-to-one correspondence with the heat dissipation ports.

[0016] By adopting the above technical solution, the setting of the dust-proof net plates can prevent dust and sundries from entering the interior of the outer shell and extend the service life of the device. When the heat dissipation ports are closed on rainy days, the dust-proof net plates can further reduce the intrusion of particulate matter carried by rainwater.

[0017] Optionally, an intake fan group and an exhaust fan group are further arranged inside the outer shell. There are two heat dissipation ports, and the two heat dissipation ports are arranged at intervals in the vertical direction. The intake fan group is arranged opposite to the corresponding heat dissipation port, and the exhaust fan group is arranged opposite to the other heat dissipation port.

[0018] By adopting the above technical solution, a vertical air flow path is formed through the vertically distributed heat dissipation ports. The intake fan group inhales cold air, and the exhaust fan group discharges hot air. The "chimney effect" is utilized to enhance natural convection and reduce the energy consumption of the fans. In the active heat dissipation mode, the directional flow of the air can quickly take away heat, which can further increase the heat dissipation efficiency of the LCD display screen.

[0019] Optionally, the heat dissipation switching mechanism includes a sliding frame, the closing plate group is arranged on the sliding frame, the sliding frame is slidably connected to the outer shell in the vertical direction, the switching driving member is connected to the sliding frame, and the switching driving member is used to drive the sliding frame to move in the vertical direction; the intake fan group and the exhaust fan group are located on the side of the sliding frame facing away from the heat dissipation ports.

[0020] By adopting the above technical solution, the heat dissipation switching mechanism is arranged by the cooperation of the sliding frame and the switching driving member. When it is necessary to open or close all the heat dissipation ports, only the switching driving member needs to drive the sliding frame to rise or fall in the vertical direction, and all the closed plate groups will open or close the corresponding heat dissipation ports. The linkage design of the sliding frame and the closed plate group simplifies the control structure. By a single switching driving member, the opening and closing states of multiple heat dissipation ports are synchronously adjusted, ensuring the consistency of actions and reducing the risk of mechanical failures.

[0021] Optionally, the closed plate group includes a closed ring. The axial direction of the closed ring is arranged along the opening direction of the heat dissipation port, and one end of the closed ring communicates with the corresponding heat dissipation port, and the other end is disposed opposite to the corresponding intake fan group or the corresponding exhaust fan group; a plurality of baffle plates are arranged inside the closed ring. The baffle plates close the closed ring, and the plurality of baffle plates are arranged in parallel at intervals in sequence along the axial direction of the closed ring. The baffle plates are slidably connected to the inner side wall of the closed ring along the axial direction of the closed ring. A relative driving member is arranged between two adjacent baffle plates, and the relative driving member is used to drive two adjacent baffle plates to move towards each other or away from each other; ventilation long holes are formed in the baffle plates, and the ventilation long holes on two adjacent baffle plates are arranged at intervals in the vertical direction.

[0022] By adopting the above technical solution, firstly, through the arrangement of the closed ring and the plurality of baffle plates in the closed plate group, the baffle plates close the closed ring, which closes the channel between the heat dissipation port and the corresponding intake fan group or exhaust fan group, and thus the function of closing the heat dissipation port can be realized.

[0023] Secondly, since the plurality of baffle plates are slidably connected to the inner side wall of the closed ring, and the relative driving member between two adjacent baffle plates can drive the corresponding two baffle plates to move towards each other or away from each other, the plurality of baffle plates have the following two states: The first state is that the plurality of baffle plates are mutually attached. At this time, the plurality of baffle plates close the closed ring, and thus have a closing effect on the heat dissipation port.

[0024] The second state is that two adjacent baffle plates are spaced apart from each other. At this time, a baffle channel is formed between two adjacent baffle plates, and since ventilation long holes are formed in the baffle plates, the air flow entering from the heat dissipation port can sequentially pass through all the ventilation long holes and the baffle channel and enter the housing or be discharged from the housing.

[0025] Since the baffle channel and the staggered ventilation long holes form a labyrinth channel, forcing the air flow to change direction multiple times. In rainy days, water droplets impact the surface of the baffle plates due to inertia and condense and are discharged, realizing air-water separation, allowing limited heat dissipation while preventing water from entering.

[0026] Furthermore, in rainy days, if the LCD display still needs to dissipate heat, several baffle plates are switched to the second state at this time, which enables the LCD display to dissipate heat even in rainy days, and can reduce the possibility of rainwater entering the housing, improve the service life of the screen and controller inside the housing, and thus improve the adaptability of the LCD display to bad weather.

[0027] Optionally, the relative driving member includes a repulsive electromagnetic sheet, an attractive electromagnetic sheet, a first magnetic sheet and a second magnetic sheet. The repulsive electromagnetic sheet and the attractive electromagnetic sheet are located on the same side of the baffle plate. The first magnetic sheet and the second magnetic sheet are located on the same side of the baffle plate. And the repulsive electromagnetic sheet is disposed opposite to the first magnetic sheet on the adjacent baffle plate, and the attractive electromagnetic sheet is disposed opposite to the second magnetic sheet on the adjacent baffle plate.

[0028] By adopting the above technical solution, when the repulsive electromagnetic sheet is energized, under the action of the repulsive electromagnetic sheet and the first magnetic sheet at this time, two adjacent baffle plates repel and move away from each other. Similarly, when the attractive electromagnetic sheet is energized, under the action of the attractive electromagnetic sheet and the second magnetic sheet at this time, two adjacent baffle plates attract and fit together. This can realize the function of the relative driving member.

[0029] Optionally, a water guide plate is provided on the lower side of the closed ring. The water guide plate is fixedly connected to the closed ring. A water guide groove is opened on the upper side of the water guide plate. A plurality of water leakage holes are opened on the lower side of the closed ring. The water leakage holes are communicated with the water guide groove.

[0030] By adopting the above technical solution, since several baffle plates can separate the rainwater in the airflow, after the rainwater adheres to the baffle plates, the rainwater will fall along the baffle plates to the bottom of the closed ring, and then be discharged through the water leakage holes. At this time, the water guide groove on the water guide plate will collect this part of the rainwater to avoid water accumulation from corroding the internal structure of the housing.

[0031] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the cooperative setting of the heat dissipation port, the humidity sensor and the heat dissipation switching mechanism, the present application can automatically control the opening and closing of the heat dissipation port according to the weather conditions, so that in normal weather, the normal heat dissipation of the LCD display can be ensured, and in heavy rain weather, the possibility of rainwater entering the LCD display can be reduced, thereby reducing the impact of heavy rain weather on the LCD display and increasing the adaptability of the LCD display to harsh environments.

[0032] 2. Through the setting of the heat conduction plate, the present application can further protect the screen and the controller, thereby reducing the impact of the environment on the LCD display and improving the adaptability of the LCD display to harsh environments.

[0033] 3. Through the structural arrangement of the closed plate group, during heavy rain, the communication between the inner and outer spaces of the housing can be ensured. And when the air flow enters the housing, the rainwater in the air flow can be separated, so that the heat dissipation of the LCD display screen can be realized during heavy rain, thereby improving the adaptability of the LCD display screen to harsh environments. Description of the Drawings

[0034] Figure 1 is the overall structural schematic diagram of the LCD display screen of the present application.

[0035] Figure 2 is the sectional structural schematic diagram of the LCD display screen of the present application.

[0036] Figure 3 is the exploded structural schematic diagram of the LCD display screen of the present application.

[0037] Figure 4 is the overall structural schematic diagram of the heat dissipation switching mechanism of the present application.

[0038] Figure 5 is the overall structural schematic diagram of the closed plate group of the present application.

[0039] Figure 6 is the sectional structural schematic diagram of the closed plate group of the present application.

[0040] Figure 7 is the sectional structural schematic diagram of the baffle of the present application.

[0041] Figure 8 is the sectional structural schematic diagram of several baffles of the present application.

[0042] In the figure, 1. housing; 11. panel; 111. transparent glass plate; 12. frame; 13. back plate; 131. heat dissipation port; 132. dust-proof net plate; 14. installation space; 141. first space; 142. second space; 15. heat conduction plate; 16. heat dissipation fins; 2. screen; 3. base; 4. controller; 5. heat dissipation switching mechanism; 51. sliding frame; 52. switching driving part; 53. communication ring; 54. closed plate group; 541. closed ring; 5411. water leakage hole; 542. baffle; 5421. baffle channel; 5422. ventilation long hole; 543. relative driving part; 5431. repulsive electromagnetic sheet; 5432. attracting electromagnetic sheet; 5433. first magnetic sheet; 5434. second magnetic sheet; 544. guiding and limiting part; 5441. guiding column; 5442. guiding hole; 545. water guide plate; 5451. water guide groove; 5452. water outlet; 6. active heat dissipation mechanism; 61. installation frame; 62. intake fan group; 63. exhaust fan group. Detailed Embodiments

[0043] The following is combined with the attachedFigure 1 - Attachment Figure 8 , the present application will be further described in detail below.

[0044] An LCD display screen adaptable to harsh outdoor environments, referring to Figure 1 and Figure 2 , includes a housing 1, a screen 2, a base 3 and a controller 4. The length direction of the housing 1 is arranged vertically, and the lower end of the housing 1 is connected to the base 3. An installation space 14 is provided in the housing 1. Both the screen 2 and the controller 4 are arranged in the installation space 14. The screen 2 and the controller 4 are both arranged on the side wall of the housing 1, and the screen 2 is electrically connected to the controller 4. A plurality of heat dissipation openings 131 are provided on the housing 1, and the heat dissipation openings 131 communicate with the installation space 14. A heat dissipation switching mechanism 5 is arranged in the housing 1.

[0045] Under the action of the heat dissipation switching mechanism 5, the heat dissipation switching mechanism 5 can open or close all the heat dissipation openings 131. In rainy weather, the heat dissipation switching mechanism 5 closes the heat dissipation openings 131, which can prevent rainwater from entering the LCD display screen; in normal weather, the heat dissipation switching mechanism 5 opens the heat dissipation openings 131, which can enable the LCD display screen to dissipate heat normally.

[0046] Referring to Figure 1 and Figure 3 , the housing 1 includes a front panel 11, a frame 12 and a back panel 13. The front panel 11, the frame 12 and the back panel 13 are all vertically arranged on the base 3. The front panel 11 and the back panel 13 are arranged in parallel at intervals. The frame 12 is located between the front panel 11 and the back panel 13. Both the front panel 11 and the back panel 13 enclose the frame 12, and the front panel 11 is fixedly connected to the frame 12, and the back panel 13 is detachably connected to the frame 12.

[0047] The cooperation of the front panel 11, the frame 12 and the back panel 13 forms an installation space 14 between the front panel 11, the frame 12 and the back panel 13. At the same time, since the frame 12 is detachably connected to the back panel 13, the installation space 14 can be opened by detaching the back panel 13, which is convenient for the maintenance of the internal equipment of the housing 1.

[0048] Referring to Figure 1 and Figure 2 , a transparent glass plate 111 is provided on the front panel 11. The screen 2 is located in the installation space 14, and the screen 2 is connected to the front panel 11. The screen 2 is arranged opposite to the transparent glass plate 111. The controller 4 is located in the installation space 14, and the controller 4 is connected to the front panel 11. The controller 4 is located directly below the screen 2.

[0049] Since both the screen 2 and the controller 4 are installed on the front panel 11, it is convenient for the heat dissipation of the screen 2 and the controller 4, and can also protect the screen 2 and the controller 4.

[0050] Referring toFigure 2 and Figure 3 Inside the housing 1, a heat conducting plate 15 is further provided. The heat conducting plate 15 is located inside the frame 12. The heat conducting plate 15 is arranged in parallel and at intervals with the panel 11. And the heat conducting plate 15 closes the frame 12. The heat conducting plate 15 divides the installation space 14 into a first space 141 and a second space 142 along its own thickness direction. The first space 141 is located between the heat conducting plate 15 and the panel 11, and the second space 142 is located between the heat conducting plate 15 and the back plate 13. And the first space 141 and the second space 142 are independently arranged. The screen 2 and the controller 4 are both located in the first space 141, and the screen 2 and the controller 4 are both in contact with the heat conducting plate 15.

[0051] Due to the setting of the heat conducting plate 15, the screen 2 and the controller 4 are in the closed first space 141, which can prevent rainwater or water vapor or air with high humidity from entering the first space 141, and further prevent rainwater or water vapor or air with high humidity from contacting the screen 2 and the controller 4, which can improve the service life of the screen 2 and the controller 4. On this basis, the heat conducting plate 15 can quickly conduct the heat generated by the screen 2 and the controller 4, and further meet the heat dissipation function of the screen 2 and the controller 4.

[0052] Refer to Figure 2 and Figure 3 On the side of the heat conducting plate 15 facing away from the panel 11, a plurality of heat dissipation fins 16 are provided. The heat dissipation fins 16 are connected to the heat conducting plate 15. The length direction of the heat dissipation fins 16 is arranged along the length direction of the heat conducting plate 15. The plurality of heat dissipation fins 16 are arranged at intervals in sequence along the width direction of the heat conducting plate 15.

[0053] The setting of the heat dissipation fins 16 can increase the heat dissipation area of the heat conducting plate 15, and further ensure the heat dissipation efficiency of the heat conducting plate 15.

[0054] Refer to Figure 2 and Figure 3 Inside the housing 1, an active heat dissipation mechanism 6 is further provided. The active heat dissipation mechanism 6 is located in the second space 142. The active heat dissipation mechanism 6 includes a mounting frame 61. The mounting frame 61 is located inside the frame 12. The mounting frame 61 is detachably connected to the frame 12. The mounting frame 61 is arranged in parallel with the heat conducting plate 15. The plurality of heat dissipation fins 16 are all located between the heat conducting plate 15 and the mounting frame 61. And the mounting frame 61 is arranged in parallel and at intervals with the back plate 13.

[0055] Refer to Figure 2 and Figure 3The active heat dissipation mechanism 6 further includes an intake fan group 62 and an exhaust fan group 63. The intake fan group 62 and the exhaust fan group 63 are both arranged on the mounting frame 61, and the intake fan group 62 and the exhaust fan group 63 are arranged at intervals in the vertical direction. The heat dissipation openings 131 are formed on the back plate 13, and there are two heat dissipation openings 131 which are arranged at intervals in the vertical direction. One heat dissipation opening 131 is arranged opposite to the intake fan group 62, and the other heat dissipation opening 131 is arranged opposite to the exhaust fan group 63.

[0056] When the intake fan group 62 and the exhaust fan group 63 are working, the air flow will actively enter the housing 1 from one heat dissipation opening 131, and then the air flow will pass through the heat conduction plate 15 and be discharged from the other heat dissipation opening 131, which can accelerate the gas flow and thus increase the heat dissipation speed.

[0057] Refer to Figure 2 and Figure 3 The heat dissipation switching mechanism 5 is located in the second space 142, and the heat dissipation switching mechanism 5 is located between the mounting frame 61 and the back plate 13.

[0058] Refer to Figure 2 and Figure 3 The heat dissipation switching mechanism 5 includes a sliding frame 51. The sliding frame 51 is located inside the frame 12. The sliding frame 51 is arranged in parallel and at intervals with the heat conduction plate 15. The heat conduction plate 15, the mounting frame 61, the sliding frame 51 and the back plate 13 are arranged in sequence, and the heat conduction plate 15 is arranged at intervals with the mounting frame 61. The mounting frame 61 is slidably connected with the sliding frame 51, and the sliding frame 51 is slidably connected with the back plate 13.

[0059] Refer to Figure 2 and Figure 3 The heat dissipation switching mechanism 5 further includes two closed plate groups 54. The two closed plate groups 54 are arranged on the sliding frame 51, and the two closed plate groups 54 are arranged at intervals in the vertical direction. The closed plate groups 54 are arranged in one-to-one correspondence with the heat dissipation openings 131, and the closed plate groups 54 close the corresponding heat dissipation openings 131.

[0060] Refer to Figure 2 and Figure 4 The heat dissipation switching mechanism 5 further includes a switching driving member 52. The sliding frame 51 is slidably connected with the inner side wall of the frame 12 in the vertical direction. The switching driving member 52 is arranged vertically, and the switching driving member 52 is connected with the sliding frame 51, and the driving end of the switching driving member 52 is connected with the sliding frame 51. In this embodiment, the switching driving member 52 adopts an electric push rod; and there are two switching driving members 52.

[0061] Under the combined action of the sliding frame 51, the closing plate group 54, and the switching driving member 52, the switching driving member 52 can control the opening or closing of the corresponding heat dissipation opening 131 by the closing plate group 54. When the closing plate group 54 closes the corresponding heat dissipation opening 131, the internal and external spaces of the housing 1 can be separated, thereby preventing rainwater outside the housing 1 from entering the housing 1.

[0062] Referring to Figure 2 and Figure 4 , the heat dissipation switching mechanism 5 further includes two communication rings 53. Both of the two communication rings 53 are arranged on the sliding frame 51. The axial direction of the communication ring 53 is arranged along the thickness direction of the back plate 13. The communication rings 53 are arranged in one-to-one correspondence with the closing plate group 54, and the communication ring 53 is located above the corresponding closing plate group 54.

[0063] In this embodiment, the communication rings 53 are arranged in one-to-one correspondence with the heat dissipation openings 131. During the process of the switching driving member 52 driving the sliding frame 51 to move, when the communication ring 53 is disposed opposite to the corresponding heat dissipation opening 131, the communication ring 53 is located between the corresponding heat dissipation opening 131 and the corresponding intake fan group 62 or the corresponding exhaust fan group 63. One end of the communication ring 53 is in direct communication with the corresponding heat dissipation opening 131, and the other end is in direct communication with the corresponding intake fan group 62 or the corresponding exhaust fan group 63. At this time, the internal and external spaces of the housing 1 are in communication. Under the action of the intake fan group 62 and the exhaust fan group 63, the air in the internal and external spaces of the housing 1 can flow to achieve heat dissipation.

[0064] Referring to Figure 2 and Figure 4 , the closing plate group 54 includes a closing ring 541. The closing ring 541 is arranged on the sliding frame 51. The axial direction of the closing ring 541 is arranged along the interval direction between the back plate 13 and the front panel 11. The side of the closing ring 541 facing the back plate 13 is slidably connected to the back plate 13, and the closing ring 541 is located between the back plate 13 and the mounting frame 61 along its own axial direction. One end of the closing ring 541 is in direct communication with the corresponding heat dissipation opening 131, and the other end is in direct communication with the corresponding intake fan group 62 or the exhaust fan group 63.

[0065] The setting of the closing ring 541 establishes an air flow channel between the corresponding heat dissipation opening 131 and the corresponding intake fan group 62 or the exhaust fan group 63.

[0066] Referring to Figure 4 and Figure 5 , the closing plate group 54 further includes baffle plates 542. The baffle plates 542 are all arranged inside the closing ring 541. The baffle plates 542 are arranged parallel to the back plate 13, and the baffle plates 542 close the closing ring 541.

[0067] The setting of the baffle plates 542 realizes the closing of the closing ring 541, and further realizes the closing function of the corresponding heat dissipation opening 131, which meets the function of the closing plate group 54.

[0068] In this embodiment, referring to Figure 5 and Figure 6 , a plurality of baffle plates 542 are provided, and the plurality of baffle plates 542 are all located within the closed ring 541, and the plurality of baffle plates 542 are arranged in parallel at intervals along the axial direction of the closed ring 541 in sequence, so that a baffle channel 5421 is formed between two adjacent baffle plates 542. An air vent long hole 5422 is formed in the baffle plate 542, the length direction of the air vent long hole 5422 is arranged along the horizontal direction, and the air vent long holes 5422 on two adjacent baffle plates 542 are arranged at intervals along the vertical direction.

[0069] During a rainstorm, the switching driving member 52 drives the closing plate group 54 to communicate with the corresponding heat dissipation port 131. At this time, under the action of the intake fan group 62, the airflow containing water droplets enters the closed ring 541. At this time, the airflow will sequentially pass through all the air vent long holes 5422 and the baffle channels 5421. During this process, the water droplets in the airflow will be separated, thereby reducing the water content in the airflow. This enables the LCD display screen to still perform active heat dissipation during a rainstorm.

[0070] In this embodiment, referring to Figure 6 and Figure 7 , a plurality of baffle plates 542 are all slidably connected to the inner side wall of the closed ring 541 along the axial direction of the closed ring 541, and a relative driving member 543 is arranged between two adjacent baffle plates 542. The relative driving member 543 includes a repulsive electromagnetic sheet 5431, an attractive electromagnetic sheet 5432, a first magnetic sheet 5433 and a second magnetic sheet 5434. The repulsive electromagnetic sheet 5431 and the attractive electromagnetic sheet 5432 are located on the same side of the baffle plate 542, the first magnetic sheet 5433 and the second magnetic sheet 5434 are located on the same side of the baffle plate 542, and the repulsive electromagnetic sheet 5431 is arranged opposite to the first magnetic sheet 5433 on the adjacent baffle plate 542, and the attractive electromagnetic sheet 5432 is arranged opposite to the second magnetic sheet 5434 on the adjacent baffle plate 542.

[0071] When the repulsive electromagnetic sheet 5431 is electrified, at this time, under the action of the repulsive electromagnetic sheet 5431 and the first magnetic sheet 5433, two adjacent baffle plates 542 repel and move away from each other. Similarly, when the attractive electromagnetic sheet 5432 is electrified, at this time, under the action of the attractive electromagnetic sheet 5432 and the second magnetic sheet 5434, two adjacent baffle plates 542 attract and fit together, which can realize the function of the relative driving member 543.

[0072] Under the action of a plurality of relative driving members 543, the change in the positional relationship of a plurality of baffle plates 542 causes the sealing ring 541 to be in two different states: closed or open. The first state: when a plurality of relative driving members 543 drive a plurality of baffle plates 542 to attract each other, at this time, the ventilation long holes 5422 on the plurality of baffle plates 542 are all closed, and the baffle plates 542 seal the sealing ring 541, and this state can realize the sealing function of the heat dissipation port 131; the second state: when a plurality of relative driving members 543 drive a plurality of baffle plates 542 to move away from each other, at this time, the ventilation long holes 5422 on the plurality of baffle plates 542 communicate with the corresponding baffle channels 5421, and a plurality of baffle plates 542 form a flow channel for air to pass through in the sealing ring 541. At this time, the sealing ring 541 is in an open state, and at this time, a plurality of baffle plates 542 cooperate to separate air and rainwater.

[0073] In this embodiment, referring to Figure 2 and Figure 6 , the baffle plate 542 close to the back plate 13 is detachably or fixedly connected to the sealing ring 541.

[0074] In this embodiment, referring to Figure 8 , a plurality of guiding and limiting members 544 are provided on the baffle plate 542. The guiding and limiting members 544 include guiding columns 5441. The guiding columns 5441 are located on one side of the baffle plate 542 in the thickness direction. The axial direction of the guiding columns 5441 is arranged along the thickness direction of the baffle plate 542, and one end of the guiding column 5441 is fixedly connected to the baffle plate 542. A guiding hole 5442 is opened on the side of the baffle plate 542 away from the guiding column 5441. The guiding holes 5442 are arranged in one-to-one correspondence with the guiding columns 5441, and the guiding holes 5442 are coaxially arranged with the corresponding guiding columns 5441.

[0075] Referring to Figure 8 , the guiding column 5441 is inserted and matched with the corresponding guiding hole 5442 on the adjacent baffle plate 542, and the guiding column 5441 is slidably connected to the inner side wall of the corresponding guiding hole 5442.

[0076] Under the action of a plurality of guiding and limiting members 544, the stability of the relative movement of two adjacent baffle plates 542 can be improved.

[0077] In this embodiment, referring to Figure 2 and Figure 6 , a water guide plate 545 is arranged on the lower side of the sealing ring 541. The upper side of the water guide plate 545 is fixedly connected to the lower side wall of the sealing ring 541. A water guide groove 5451 is opened on the upper side of the water guide plate 545. A plurality of water leakage holes 5411 are opened on the lower side wall of the sealing ring 541. The water leakage holes 5411 communicate with the water guide groove 5451, and a plurality of baffle channels 5421 all communicate with the water leakage holes 5411.

[0078] When the airflow containing rainwater passes through several baffle channels 5421, the separated rainwater will flow into the water guide groove 5451 through the water leakage holes 5411, thereby realizing the collection of rainwater.

[0079] Referring to Figure 2 and Figure 6 , on the side of the water guide plate 545 facing the back plate 13, a water outlet 5452 is provided, and when the sealing ring 541 communicates with the corresponding heat dissipation port 131, the water outlet 5452 communicates with the corresponding heat dissipation port 131, which enables the collected rainwater to flow out of the housing 1 through the water outlet 5452 and the heat dissipation port 131.

[0080] Referring to Figure 2 and Figure 3 , a plurality of dust-proof net plates 132 are further provided on the back plate 13. The dust-proof net plates 132 are arranged in one-to-one correspondence with the heat dissipation ports 131, and the dust-proof net plates 132 are arranged on the side of the back plate 13 away from the front panel 11. The dust-proof net plates 132 are detachably connected to the back plate 13, and the dust-proof net plates 132 cover the corresponding heat dissipation ports 131. The arrangement of the dust-proof net plates 132 can reduce the dust content of the airflow entering the interior of the housing 1.

[0081] In addition, a plurality of humidity sensors are provided outside the housing 1. The humidity sensors can detect the humidity of the external environment of the LCD display screen, and thus determine whether it is raining. Temperature sensors are provided both inside and outside the housing 1. The temperature sensors can obtain the temperature inside the housing 1 and the temperature of the external environment of the LCD display screen, which can detect the heat generation situation of the internal devices of the housing 1.

[0082] The implementation principle of the embodiment of the present application is: the internal temperature of the housing 1 is obtained through the temperature sensor inside the housing 1, and the humidity and temperature of the external environment of the housing 1 are obtained through the temperature sensor and humidity sensor outside the housing 1.

[0083] When it is detected that the humidity outside the housing 1 is relatively high or suddenly increases, it means that the LCD display screen is in a rainy environment. At this time, the switching drive member 52 is switched to drive the sliding frame 51 to move, and the two closing plate groups 54 respectively close the corresponding heat dissipation ports 131, which can prevent external rainwater from entering the housing 1.

[0084] When it is detected that the humidity outside the housing 1 returns to normal or suddenly drops, it means that the rain has stopped in the environment where the LCD display screen is located. At this time, the switching drive member 52 is switched to drive the sliding frame 51 to move, and the two communication rings 53 respectively communicate with the corresponding heat dissipation ports 131. The internal and external spaces of the housing 1 are communicated. Under the action of the active heat dissipation mechanism 6, the air circulation inside and outside the housing 1 is increased, and the heat dissipation effect is improved.

[0085] When it is detected that the humidity outside the housing 1 is relatively high or suddenly increases, and at this time the temperature inside the housing 1 is relatively high, at this time the LCD display screen is in a rainy environment, but still needs to quickly dissipate heat and cool down. Then the driving member 52 is switched to drive the sliding frame 51 to move, and the two closing plate groups 54 respectively close the corresponding heat dissipation openings 131. Then a number of relative driving members 543 are started, and the adjacent two baffle plates 542 move relatively away from each other. At this time, under the action of the active heat dissipation mechanism 6, the airflow entering the housing 1 will sequentially pass through a number of baffle plates 542, which can separate the rainwater from the airflow, thereby reducing the water content of the airflow, so as to reduce the impact of rainwater on the equipment inside the housing 1 while ensuring the heat dissipation effect of the LCD display screen.

[0086] The embodiments of this specific implementation manner are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An LCD display screen that can be adapted to harsh outdoor environments, characterized in that: include: A housing (1), a screen (2) being arranged on a side wall of the housing (1), a controller (4) being arranged inside the housing (1), the controller (4) being electrically connected to the screen (2), and a base (3) being arranged at the bottom of the housing (1); A plurality of humidity sensors are arranged outside the housing (1), and a plurality of heat dissipation openings (131) are provided on the housing (1); A heat dissipation switching mechanism (5) is arranged in the housing (1), the heat dissipation switching mechanism (5) comprising a plurality of closed plate groups (54), the closed plate groups (54) being arranged in one-to-one correspondence with the heat dissipation openings (131), the closed plate groups (54) closing the corresponding heat dissipation openings (131), the closed plate groups (54) being slidably connected to the housing (1), a switching drive member (52) being arranged on the housing (1), the switching drive member (52) being connected to the closed plate groups (54), and the switching drive member (52) being used to drive the closed plate groups (54) to open or close the corresponding heat dissipation openings (131).

2. The LCD display screen that can be adapted to harsh outdoor environments according to claim 1, characterized in that: An installation space (14) is provided in the housing (1), a heat conducting plate (15) is provided in the housing (1), the heat conducting plate (15) is arranged in parallel with the screen (2) and spaced apart from each other, and the heat conducting plate (15) separates the installation space (14) into a first space (141) and a second space (142) which are independent of each other along its thickness direction, the screen (2) and the controller (4) are both located in the first space (141), the heat dissipation port (131) is connected to the second space (142), and the closed plate group (54) and the switching drive member (52) are both located in the second space (142).

3. The LCD display screen that can be adapted to harsh outdoor environments according to claim 2, characterized in that: The screen (2) and the controller (4) are both attached to the heat conducting plate (15), and a plurality of heat dissipation fins (16) are provided on a side of the heat conducting plate (15) facing away from the screen (2).

4. The LCD display screen that can be adapted to harsh outdoor environments according to claim 1, characterized in that: A plurality of dustproof screens (132) are provided on the housing (1), and the dustproof screens (132) are arranged in a one-to-one correspondence with the heat dissipation openings (131).

5. The LCD display screen that can adapt to harsh outdoor environments according to claim 1, characterized in that: An air intake fan group (62) and an air outlet fan group (63) are also provided in the housing (1); two heat dissipation ports (131) are provided, and the two heat dissipation ports (131) are arranged at intervals in the vertical direction; the air intake fan group (62) is arranged opposite to the corresponding heat dissipation port (131), and the air outlet fan group (63) is arranged opposite to the other heat dissipation port (131).

6. The LCD display screen that can be adapted to harsh outdoor environments according to claim 5, characterized in that: The heat dissipation switching mechanism (5) comprises a sliding frame (51), the closing plate group (54) is arranged on the sliding frame (51), the sliding frame (51) is slidably connected to the housing (1) in a vertical direction, the switching driving member (52) is connected to the sliding frame (51), and the switching driving member (52) is used to drive the sliding frame (51) to move in the vertical direction; The air inlet fan group (62) and the air outlet fan group (63) are located on a side of the sliding frame (51) away from the heat dissipation port (131).

7. The LCD display screen that can be adapted to harsh outdoor environments according to claim 6, characterized in that: The closed plate group (54) comprises a closed ring (541), the closed ring (541) being axially arranged along the opening direction of the heat dissipation opening (131), and one end of the closed ring (541) being in communication with the corresponding heat dissipation opening (131), and the other end being arranged facing the corresponding air inlet fan group (62) or the corresponding air outlet fan group (63); A plurality of baffles (542) are arranged in the closed ring (541), the baffles (542) close the closed ring (541), and the plurality of baffles (542) are arranged in parallel and spaced apart in sequence along the axial direction of the closed ring (541), the baffles (542) are slidably connected to the inner side wall of the closed ring (541) along the axial direction of the closed ring (541), and a relative driving member (543) is arranged between two adjacent baffles (542), and the relative driving member (543) is used to drive the two adjacent baffles (542) to move towards each other or away from each other; The baffle plate (542) is provided with a long ventilation hole (5422), and the long ventilation holes (5422) on two adjacent baffle plates (542) are arranged at intervals in the vertical direction.

8. The LCD display screen that can be adapted to harsh outdoor environments according to claim 7, characterized in that: The relative driving member (543) comprises a repulsive electromagnetic sheet (5431), an attractive electromagnetic sheet (5432), a first magnetic sheet (5433) and a second magnetic sheet (5434); the repulsive electromagnetic sheet (5431) and the attractive electromagnetic sheet (5432) are located on the same side of the baffle plate (542); the first magnetic sheet (5433) and the second magnetic sheet (5434) are located on the same side of the baffle plate (542); the repulsive electromagnetic sheet (5431) is arranged opposite to the first magnetic sheet (5433) on the adjacent baffle plate (542); and the attractive electromagnetic sheet (5432) is arranged opposite to the second magnetic sheet (5434) on the adjacent baffle plate (542).

9. The LCD display screen that can be adapted to harsh outdoor environments according to claim 7, characterized in that: A water guide plate (545) is provided at the lower side of the closed ring (541); the water guide plate (545) is fixedly connected to the closed ring (541); a water guide groove (5451) is provided at the upper side of the water guide plate (545); a plurality of water leakage holes (5411) are provided at the lower side of the closed ring (541); the water leakage holes (5411) are in communication with the water guide groove (5451).

Images