Detachable thermal cycle dehumidification intelligent display screen system

Abstract

The invention discloses a detachable thermal cycle dehumidification intelligent display screen system which comprises a display screen body, an internal cavity and a supporting rack and further comprises an active dehumidification module detachably installed on the back of the display screen body, an environment monitoring module arranged in the internal cavity and a controller. Wherein the active dehumidification module comprises a heating unit and an airflow driving unit, the heating unit is used for heating the inner cavity, the airflow driving unit is arranged at the joint of the supporting rack and the display screen body, and the environment monitoring module comprises a first temperature sensor and a humidity sensor; the controller is electrically connected with the heating unit, the airflow driving unit and the environment monitoring module and used for controlling the working state of the active dehumidification module at least according to the temperature and humidity information of the inner cavity. According to the technical scheme, performance faults caused by condensation in the industrial control display screen are prevented.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a detachable thermal circulation dehumidification intelligent display system. Background Technology

[0002] Industrial control displays, as crucial human-machine interfaces in industrial automation systems, are widely deployed in complex environments such as manufacturing workshops, ports, field base stations, and cold storage facilities. These scenarios typically experience harsh conditions such as high humidity and drastic temperature fluctuations, including diurnal temperature differences of tens of degrees Celsius, sudden seasonal climate changes, or significant indoor-outdoor temperature differences, which can easily induce condensation within the display's internal cavity. The physical cause of condensation is that when the surface temperature of components such as the metal backplate, circuit board, or LCD panel inside the cavity is lower than the current air dew point temperature, water vapor in the air condenses into liquid water droplets on that surface. Such internal condensation poses multiple threats to equipment reliability: Electrically, water droplets may bridge delicate traces on printed circuit boards, causing short circuits, leading to burnout of driver chips or main control units, resulting in permanent equipment failure and production interruption; Materially, under power-on conditions, moisture and residual process ions work together to accelerate the electrochemical corrosion of copper foil circuits and component pins, resulting in progressive open circuits or poor contact; Optically, moisture entering the liquid crystal cell or optical film gaps will damage display uniformity, producing haze, shadows, or contrast degradation, and in severe cases, causing irreversible pixel damage; In addition, a long-term humid environment provides a breeding ground for mold, further eroding internal insulation materials and optical coatings, reducing equipment lifespan. Summary of the Invention

[0003] The main objective of this invention is to provide a detachable thermal circulation dehumidification intelligent display system, which aims to prevent performance failures caused by condensation inside industrial control displays.

[0004] To achieve the above objectives, the present invention proposes a detachable heat circulation dehumidification intelligent display screen system, including a display screen body, an internal cavity located within the display screen body, and a support frame connected to the display screen body for installation and fixation. It also includes an active dehumidification module detachably installed on the back of the display screen body, an environmental monitoring module and a controller located within the internal cavity. The active dehumidification module includes a heating unit for heating the internal cavity and an airflow driving unit. The airflow driving unit is located at the connection between the support frame and the display screen body and is used to drive the air circulation in the internal cavity so that the heat generated by the heating unit is evenly distributed in the internal cavity. The environmental monitoring module includes a first temperature sensor for monitoring the temperature of the internal cavity and a humidity sensor for monitoring the humidity of the internal cavity. Furthermore, the controller is electrically connected to the heating unit, the airflow drive unit, and the environmental monitoring module, respectively, and is used to control the working state of the active dehumidification module based at least on the temperature and humidity information of the internal cavity.

[0005] In one possible implementation, the heating unit is a PTC heater, the airflow drive unit is an axial fan, the heating unit is located on the side of the internal cavity, and its heating surface faces the central region of the internal cavity.

[0006] In one possible implementation, the internal cavity is provided with a flow guiding structure, which includes a flow guiding shroud surrounding the heating unit and flow guiding ribs disposed on the inner wall of the internal cavity, for guiding airflow to form a closed-loop air duct.

[0007] In one possible implementation, the environmental monitoring module further includes a panel temperature sensor located within the internal cavity and near the back of the display panel.

[0008] In one possible implementation, the controller is used to: The temperature and humidity of the internal cavity are obtained, and the current internal dew point temperature is calculated. The temperature of the internal cavity or the panel temperature is compared with the internal dew point temperature. When the temperature is lower than or close to a preset threshold of the internal dew point temperature, the heating unit and the airflow drive unit are activated until the temperature rises to a target safe range higher than the internal dew point temperature.

[0009] In one possible implementation, the controller is further configured to: Obtain the external ambient temperature of the display screen body; The risk of condensation is predicted based on the external ambient temperature and the internal temperature. When the risk of condensation reaches a preset warning level, the active dehumidification module is activated in low power mode.

[0010] In one possible implementation, the back of the display screen body is provided with a mounting interface, the active dehumidification module is detachably connected to the mounting interface by a snap-fit, and is provided with an electrical connector for quick plugging and unplugging with the controller.

[0011] In one possible implementation, an air inlet duct is formed at the connection between the support frame and the display screen body, and the airflow drive unit is disposed within the air inlet duct.

[0012] In one possible implementation, a dust filter is detachably installed at the inlet of the air intake duct.

[0013] This invention integrates a detachable active thermal circulation dehumidification module and an intelligent controller based on real-time temperature and humidity monitoring. This achieves active and precise anti-condensation control of the internal cavity of the display screen, solving the problems of blurred display, short circuits, and component corrosion caused by internal condensation in traditional industrial control displays in high-temperature, high-humidity, or large-temperature-difference environments. At the same time, the closed-loop airflow channel composed of the air guide cover and air guide ribs ensures that the heated dry air can be blown evenly and efficiently onto the back of the panel and the surface of key components, avoiding uneven local temperature and dehumidification dead zones, significantly improving heat exchange efficiency and anti-condensation reliability. In addition, the modular and detachable design makes the core dehumidification components easy to maintain and replace. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0015] Figure 1 This is a front view of a structure according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the rear side of an embodiment of the present invention; Figure 3 This is an exploded view of the display screen body and supporting frame structure according to an embodiment of the present invention; Figure 4 This is an exploded structural diagram of the PTC heater and display screen body according to an embodiment of the present invention.

[0016] Explanation of icon numbers: 1. Display screen body; 11. Internal cavity; 12. Mounting interface; 13. Electrical connector; 2. Support frame; 3. Active dehumidification module; 4. Controller; 5. PTC heater; 6. Airflow drive unit; 61. Axial fan; 71. First temperature sensor; 72. Humidity sensor; 8. Dust filter.

[0017] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0019] This embodiment provides an intelligent display screen system with detachable thermal circulation dehumidification. Traditional industrial control displays are highly susceptible to condensation in complex and harsh environments such as workshops, ports, field base stations, and cold storage facilities due to high humidity and sudden temperature changes. Condensation can cause serious damage such as electrical short circuits, electrochemical corrosion, optical performance degradation, and mold growth. Existing technologies employing sealing, external heating, or overall environmental dehumidification solutions all suffer from limitations such as the "breathing effect," uneven heating, inability to actively dehumidify, high cost, high energy consumption, and lack of specificity, failing to completely solve the internal condensation problem.

[0020] In response, this application proposes a smart display screen system with detachable thermal circulation dehumidification, including a display screen body, an internal cavity 11 located within the display screen body, and a support frame 2 connected to the display screen body 1 for mounting and fixing. It also includes an active dehumidification module 3 detachably mounted on the back of the display screen body, an environmental monitoring module located within the internal cavity 11, and a controller 4. The active dehumidification module 3 includes a heating unit for heating the internal cavity 11 and an airflow driving unit 6. The airflow driving unit 6 is located at the connection between the support frame 2 and the display screen body and drives air circulation within the internal cavity 11 to evenly distribute the heat generated by the heating unit within the internal cavity 11. The environmental monitoring module includes a first temperature sensor 71 for monitoring the temperature of the internal cavity 11 and a humidity sensor 72 for monitoring the humidity of the internal cavity 11. The controller 4 is electrically connected to the heating unit, the airflow driving unit 6, and the environmental monitoring module, and controls the operating state of the active dehumidification module 3 based at least on the temperature and humidity information of the internal cavity 11.

[0021] For ease of understanding, the following explains some key terms in this embodiment: The display body refers to the core display component of the industrial control display screen, which typically contains electronic components such as the display panel and driver circuit board, forming a relatively sealed internal space. The internal cavity 11 refers to the enclosed or semi-enclosed space within the display body, formed by the shell. This is the main area where condensation occurs and the target space for the active dehumidification module 3. The support frame 2 is a structural component connected to the display body, used to install and fix the entire industrial control display screen in a specific location (e.g., a wall, equipment cabinet, or bracket). The active dehumidification module 3 is an integrated functional unit whose main function is to reduce the relative humidity within the internal cavity 11 through active heating and airflow circulation, thereby eliminating or preventing condensation. The environmental monitoring module is a sensing device used to acquire environmental parameters of the internal cavity 11 in real time; its output data forms the basis for the controller 4 to determine the dehumidification strategy. The controller 4 is an electronic control unit responsible for receiving data from the environmental monitoring module and controlling the heating unit and airflow drive unit 6 of the active dehumidification module 3 according to preset logic or algorithms to achieve the anti-condensation function. The heating unit refers to the component in the active dehumidification module 3 that generates heat to increase the temperature of the internal cavity 11. The airflow drive unit 6 refers to the component in the active dehumidification module 3 that generates airflow to promote uniform distribution of heat and moisture within the internal cavity 11. The first temperature sensor 71 refers to the sensing element in the environmental monitoring module that measures the air temperature within the internal cavity 11. The humidity sensor 72 refers to the sensing element in the environmental monitoring module that measures the air humidity within the internal cavity 11.

[0022] This embodiment provides an intelligent display screen system with detachable thermal circulation dehumidification. Its structure includes a display screen body, an internal cavity 11 located within the display screen body, and a support frame 2 connected to the display screen body for mounting and fixing. The display screen body can adopt a conventional industrial display screen structure, forming an internal cavity 11 to accommodate electronic components and air. The support frame 2 can be a bracket or mounting plate for fixing the display screen body in the operating environment.

[0023] To achieve anti-condensation functionality, the industrial control display screen also includes an active dehumidification module 3 detachably mounted on the back of the display body, an environmental monitoring module located within the internal cavity 11, and a controller 4. The active dehumidification module 3 can be designed as an independent modular unit, fixed to the back of the display body by screws, clips, or magnetic attachment for easy installation and maintenance. The environmental monitoring module can be a circuit board with integrated sensors, connected to the controller 4 via cables. The controller 4 can be a microprocessor or single-chip microcomputer, responsible for processing data and issuing control commands. The active dehumidification module 3 includes a heating unit for heating the internal cavity 11 and an airflow drive unit 6. The heating unit can be a resistance wire heater or a ceramic heating element, converting electrical energy into heat energy to raise the temperature of the internal cavity 11. The airflow drive unit 6 can be a small centrifugal fan or blower, generating airflow through rotating blades. The airflow drive unit 6 is located at the connection between the support frame 2 and the display body, driving air circulation within the internal cavity 11 to ensure uniform distribution of heat generated by the heating unit within the internal cavity 11. For example, the airflow drive unit 6 can be installed in the gap or channel formed between the support frame 2 and the display body to draw in external or internal air and blow it into the internal cavity 11. Through forced airflow circulation, local heat accumulation can be effectively avoided, ensuring that the temperature field of the entire internal cavity 11 tends to be uniform, thereby reducing the formation of cold zones.

[0024] The environmental monitoring module includes a first temperature sensor 71 for monitoring the temperature of the internal cavity 11 and a humidity sensor 72 for monitoring the humidity of the internal cavity 11. The first temperature sensor 71 can be a thermistor or thermocouple, used to measure the real-time temperature of the air in the internal cavity 11. The humidity sensor 72 can be a capacitive or resistive humidity sensor, used to measure the relative humidity of the air in the internal cavity 11. These sensors are placed at appropriate locations within the internal cavity 11 to obtain representative temperature and humidity data. The controller 4 is electrically connected to the heating unit, the airflow drive unit 6, and the environmental monitoring module, respectively, and is used to control the operating state of the active dehumidification module 3 based at least on the temperature and humidity information of the internal cavity 11. The controller 4 determines whether there is a risk of condensation in the internal cavity 11 by receiving data from the first temperature sensor 71 and the humidity sensor 72. For example, when the temperature or humidity of the internal cavity 11 reaches a certain preset critical value, the controller 4 can issue a command to start the heating unit and / or the airflow drive unit 6. When the risk is eliminated, the controller 4 can stop or adjust the operation of the heating unit and the airflow drive unit 6 to achieve energy saving.

[0025] The industrial control display screen in this embodiment integrates an active dehumidification module 3, an environmental monitoring module, and a controller 4. This allows for real-time monitoring of the temperature and humidity of the internal cavity 11, and intelligent control of the heating unit and airflow drive unit 6 based on the monitoring results. Consequently, this solution can actively and uniformly increase the temperature of the internal cavity 11 and promote air circulation, effectively preventing internal condensation. This reduces the risks of electrical short circuits, electrochemical corrosion, optical performance degradation, and mold growth, significantly improving the reliability and lifespan of the industrial control display screen in complex and harsh environments.

[0026] In some of the embodiments described above in this application, dehumidification of the internal cavity 11 is proposed by means of a heating unit and an airflow drive unit 6. However, in practical applications, if the heating unit and the airflow drive unit 6 are not properly selected or are not properly arranged, it may lead to low heating efficiency and uneven heat distribution, thereby affecting the anti-condensation effect and even posing a safety hazard.

[0027] In this regard, this application further proposes that the heating unit is a PTC heater 5, the airflow drive unit 6 is an axial fan 61, the heating unit is located on the side of the internal cavity 11, and its heating surface faces the central region of the internal cavity 11.

[0028] Specifically, the PTC heater 5 is an electric heating element with a positive temperature coefficient. Its resistance increases with temperature, and when the temperature reaches a certain value, the resistance increases sharply, thereby reducing the current and achieving automatic temperature control and overheat protection. The PTC heater 5 typically consists of a PTC ceramic heating element, a heat sink aluminum fin, and an insulating support. Its working principle utilizes the self-limiting temperature characteristic of PTC material, achieving automatic temperature regulation and stabilization without the need for an additional temperature controller 4. This solves the overheating risk and energy consumption problems that may exist with traditional heating elements, providing a safer and more efficient heating method. The axial fan 61 is a fan that draws in and exhausts air axially. It is characterized by large air volume and low air pressure, making it suitable for applications requiring high-flow air circulation. The axial fan 61 typically consists of fan blades, a motor, and a housing. During operation, the rotating fan blades generate axial airflow, effectively propelling air through the internal cavity 11. This ensures rapid and efficient air circulation within the internal cavity 11, thereby evenly distributing the heat generated by the heating unit to all corners. The heating unit is positioned on the side of the internal cavity 11, with its heating surface facing the central area of ​​the internal cavity 11, to optimize the heat transfer path and efficiency. For example, the PTC heater 5 can be mounted on the side wall of the internal cavity 11, with its main heating surface (usually one side of the heat sink aluminum fin) facing the central space of the cavity. This arrangement ensures that heat can be directly radiated or convectioned to the main area of ​​the cavity, rather than being excessively absorbed by the side wall, thereby ensuring that heat can be efficiently and evenly transferred to the internal cavity 11, avoiding local overheating or underheating, and improving the dehumidification effect.

[0029] By employing the PTC heater 5 as the heating unit, the internal cavity 11 can be automatically controlled at a constant temperature, effectively avoiding overheating risks and improving system safety and energy efficiency. Simultaneously, the PTC heater 5 has a fast response speed, rapidly increasing the temperature of the internal cavity 11. Combined with the axial fan 61 as the airflow drive unit 6, its large airflow ensures rapid and efficient air circulation within the internal cavity 11, evenly distributing the heat generated by the PTC heater 5 to every corner of the cavity, preventing localized overheating or underheating, and significantly improving dehumidification and anti-condensation reliability. Furthermore, placing the heating unit on the side of the internal cavity 11 with its heating surface facing the center of the cavity further optimizes the heat transfer path, allowing heat to act more directly and effectively on the internal space, ensuring temperature uniformity throughout the cavity and thus more effectively preventing condensation inside the display screen.

[0030] In some embodiments described above, a heating unit is used to heat the internal cavity 11, and an airflow driving unit 6 is used to drive air circulation within the internal cavity 11, so that the heat generated by the heating unit is evenly distributed within the internal cavity 11. However, in practical applications, even with a heating unit and an airflow driving unit 6, due to the complex structure or limited space of the internal cavity 11, the airflow may not effectively cover all areas, resulting in uneven heat distribution and localized areas with lower temperatures. This increases the risk of condensation, affecting the normal operation and lifespan of the display screen.

[0031] In this regard, this application further proposes that the internal cavity 11 is provided with a flow guiding structure, the flow guiding structure including a flow guiding shroud surrounding the heating unit and flow guiding ribs provided on the inner wall of the internal cavity 11, for guiding airflow to form a closed circulation air duct.

[0032] Specifically, the flow guide structure is a device used to guide the movement path of fluid (in this case, air). Its main function is to optimize the airflow organization within the internal cavity 11, ensuring that the air flows along a preset path, thereby improving heat transfer efficiency and uniformity. The flow guide structure can be made of various materials, such as high-temperature resistant plastics, metals, or composite materials. Its shape and size are designed according to the specific layout of the internal cavity 11 and the characteristics of the airflow drive unit 6. The flow guide shroud is typically shell-shaped or shrouded, and its main function is to surround or partially surround the heating unit, concentrating the hot air generated by the heating unit and guiding it directionally to a specific area. The design of the flow guide shroud ensures that the airflow flows in a predetermined direction after leaving the heating unit, preventing the hot air from spreading disorderly within the internal cavity 11, thereby improving heat utilization. For example, the flow guide shroud can be designed with an inlet and an outlet; the inlet guides cold air into the heating unit area, and the outlet guides heated air out. The flow guide ribs are protruding structures set on the inner wall of the internal cavity 11, whose function is to further refine and guide the airflow path. The guide ribs can be strip-shaped, sheet-shaped, or curved. By changing the local direction and velocity of the airflow, they prevent short-circuiting or the formation of vortices, ensuring that the airflow can flow smoothly along the inner wall of the internal cavity 11 and cover all corners. The arrangement of the guide ribs needs to comprehensively consider the geometry of the internal cavity 11, the position of the heating unit, and the airflow drive unit 6 to achieve the best guiding effect. Through the synergistic effect of the guide shroud and the guide ribs, the airflow forms a continuous, closed circulation path within the internal cavity 11, i.e., a closed-loop air duct. In this air duct, air is drawn in from the airflow drive unit 6, heated by the heating unit, and then guided to various areas of the internal cavity 11 through the guide structure, finally returning to the airflow drive unit 6, forming a continuous cycle.

[0033] Through the above technical solution, a guiding structure is set in the internal cavity 11, including a guide shroud surrounding the heating unit and guide ribs on the inner wall of the internal cavity 11, which can effectively guide the airflow to form a closed-loop air duct. Specifically, the guide shroud concentrates and directs the heat generated by the heating unit, avoiding disorderly heat loss; the guide ribs further optimize the distribution of airflow in the internal cavity 11, ensuring that the airflow can cover every corner of the internal cavity 11, avoiding airflow short circuits or dead zones. This controlled closed-loop air duct design allows the heat generated by the heating unit to be transferred more efficiently and evenly to every area of ​​the internal cavity 11, especially the back of the display panel, thereby significantly improving the overall temperature uniformity of the internal cavity 11, effectively eliminating local low-temperature areas, greatly reducing the risk of condensation, and ensuring the stable and reliable operation of the industrial control display screen in complex environments.

[0034] In some embodiments described above, the temperature and humidity of the internal cavity 11 are monitored by an environmental monitoring module, and the controller 4 controls the operating state of the active dehumidification module 3 based on this information to achieve the anti-condensation function. However, condensation on the display screen often occurs first on the inner surface of the display panel, and the temperature of this surface may differ from the overall temperature of the internal cavity 11, especially when the external ambient temperature changes drastically or the display screen operates for a long time, causing uneven heating of the panel itself. Relying solely on the overall temperature information of the internal cavity 11 may not accurately capture the actual temperature of the panel surface, thus affecting the timeliness and effectiveness of the anti-condensation strategy, and limiting the possibility that the risk of condensation may not be detected or addressed in a timely manner.

[0035] In this regard, this application further proposes that the environmental monitoring module also includes a panel temperature sensor disposed within the internal cavity 11 and close to the back of the display panel. The panel temperature sensor is a temperature-sensing element specifically designed to measure the temperature of the surface of the display panel or its vicinity. Its function is to provide accurate temperature data for the back of the display panel, as the display panel is the area most prone to condensation in industrial control displays. This sensor can be implemented using various technologies. For example, it can be a thermistor, whose resistance changes with temperature, allowing the temperature to be calculated by measuring the resistance value; it can also be a thermocouple, utilizing the thermoelectric potential generated at the junction of two different metals to measure temperature; or it can be an infrared temperature sensor, determining the temperature by measuring the infrared energy radiated from the panel surface in a non-contact manner. Regardless of the type used, the panel temperature sensor must be precisely installed within the internal cavity 11 and as close as possible to the back of the display panel to ensure that the measured temperature data accurately reflects the actual temperature of the panel surface and can transmit the measured temperature signal to the controller 4 for subsequent processing. Through the above technical solution, by adding a panel temperature sensor to the environmental monitoring module, the actual temperature of the back of the display panel can be directly obtained. Since the display panel is the area most prone to condensation in industrial control displays, directly monitoring its temperature allows the controller 4 to obtain a more accurate assessment of condensation risk. The controller 4 can combine the panel temperature provided by the panel temperature sensor, the internal cavity 11 temperature provided by the first temperature sensor 71, and the internal cavity 11 humidity provided by the humidity sensor 72 to more accurately calculate the dew point temperature of the panel surface and determine whether there is a risk of condensation on the panel surface. When the panel temperature is lower than or close to a preset threshold of the dew point temperature, the controller 4 can more promptly and accurately activate the active dehumidification module 3 to heat and circulate air in the internal cavity 11 until the temperature rises to a target safe range higher than the internal dew point temperature. This effectively prevents condensation from occurring on the display panel, significantly improving the response speed and control accuracy of the anti-condensation function, ensuring clear display in various complex environments, and improving the reliability and service life of the equipment.

[0036] In some embodiments described above, the industrial control display screen obtains the temperature and humidity information of the internal cavity 11 through an environmental monitoring module, and the controller 4 controls the working state of the active dehumidification module 3 based on this information. However, controlling solely based on the temperature and humidity information of the internal cavity 11 may not accurately determine the risk of condensation, especially when there is a difference between the surface temperature of the display panel and the air temperature of the internal cavity 11. This could lead to untimely or excessive dehumidification, affecting the anti-condensation effect and energy efficiency.

[0037] In response, this application further proposes that the controller 4 is used to: acquire the temperature and humidity of the internal cavity 11, calculate the current internal dew point temperature, compare the temperature of the internal cavity 11 or the panel temperature with the internal dew point temperature; when the temperature is lower than or close to a preset threshold of the internal dew point temperature, start the heating unit and the airflow drive unit 6 until the temperature rises to a target safe range higher than the internal dew point temperature.

[0038] Specifically, the controller 4, electrically connected to the environmental monitoring module, receives real-time temperature and humidity data of the internal cavity 11 collected by the first temperature sensor 71 and humidity sensor 72. This data forms the basis for subsequent calculations and judgments. Based on the acquired temperature and humidity data of the internal cavity 11, the controller 4 uses a preset algorithm or lookup table method to accurately calculate the current dew point temperature of the air in the internal cavity 11. The dew point temperature is the temperature at which water vapor in the air reaches saturation and begins to condense into liquid water (condensation), and it is a key parameter for judging the risk of condensation. Subsequently, the controller 4 compares the calculated internal dew point temperature with the actual temperature of the internal cavity 11. In some embodiments, if the environmental monitoring module also includes a panel temperature sensor, the controller 4 can also compare the panel temperature measured by the panel temperature sensor with the internal dew point temperature. Since the display panel is usually the surface in the internal cavity 11 most prone to condensation, directly monitoring and comparing the panel temperature with the dew point temperature can more accurately assess the risk of condensation. When the temperature of the internal cavity 11 or the panel temperature (depending on the comparison object) drops to within a preset threshold difference from the internal dew point temperature, the controller 4 determines that the risk of condensation is imminent or has already reached a critical state. This preset threshold provides a safety margin, ensuring that dehumidification measures are initiated before actual condensation occurs. Once the condensation risk condition is met, the controller 4 immediately sends a command to the active dehumidification module 3 to activate the heating unit and the airflow drive unit 6. The heating unit begins to heat the internal cavity 11, increasing the internal temperature, while the airflow drive unit 6 promotes internal air circulation, ensuring uniform heat distribution and accelerating the evaporation of internal moisture and the increase in temperature. The active dehumidification module 3 continues to operate until the temperature of the internal cavity 11 or the panel temperature (depending on the comparison object) rises to a target safe range above the internal dew point temperature. This target safe range ensures a sufficient temperature difference between the internal temperature and the dew point temperature, thereby completely eliminating the risk of condensation and providing a buffer to prevent temperature fluctuations from triggering condensation again.

[0039] Through the above technical solution, the controller 4 can accurately acquire the temperature and humidity information of the internal cavity 11 and calculate the internal dew point temperature based on this. By comparing the temperature of the internal cavity 11 or the panel temperature with the dew point temperature in real time and introducing a preset threshold, the system can immediately and proactively activate the heating unit and the airflow drive unit 6 for dehumidification when the risk of condensation is about to occur. This precise control strategy based on dew point temperature avoids the lag or inaccuracy that may exist in traditional temperature and humidity control, ensuring the timeliness and effectiveness of anti-condensation measures. At the same time, by setting a target safe range as a stop condition, it can ensure that the internal ambient temperature is sufficiently higher than the dew point temperature, completely eliminating the risk of condensation, thereby effectively protecting the internal components of the display screen from moisture damage, ensuring the normal operation and display effect of the display screen, optimizing energy consumption, and avoiding unnecessary long-term dehumidification.

[0040] In some embodiments described above, the controller 4 primarily determines the risk of condensation and activates the active dehumidification module 3 by comparing the temperature of the internal cavity 11 or the panel temperature with the internal dew point temperature, based on the temperature and humidity information of the internal cavity 11. However, this passive response mechanism based on internal environmental parameters may result in a relatively delayed activation of the dehumidification action, i.e., intervention only begins when the internal environment is close to the condensation threshold. This may require higher power to quickly eliminate the risk and fails to fully utilize external environmental information for earlier preventative control.

[0041] In this regard, this application further proposes that the controller 4 is used to obtain the external ambient temperature of the display screen body; predict the condensation risk based on the external ambient temperature and the internal temperature, and start the active dehumidification module 3 in low power mode when the condensation risk reaches a preset warning level.

[0042] To enable early prediction of condensation risk, controller 4 is configured to acquire the external ambient temperature of the display screen body. Specifically, an external temperature sensor, such as a thermistor or thermocouple, can be integrated into the outer casing or support frame 2 of the display screen body. This sensor can accurately measure the external ambient temperature around the display screen body and transmit the collected temperature data to controller 4. In this way, controller 4 can monitor the temperature difference between the inside and outside of the display screen body in real time.

[0043] After acquiring the external ambient temperature, controller 4 can predict the condensation risk based on the external ambient temperature and the internal temperature. Specifically, controller 4 can run a preset algorithm model that comprehensively considers the temperature and humidity of the internal cavity 11 as well as the external ambient temperature. For example, when the external ambient temperature is significantly lower than the internal cavity 11 temperature and the internal humidity is high, controller 4 will determine that the condensation risk has increased. This prediction model can assess factors such as the internal and external temperature difference, the internal and external humidity difference, and the rate of temperature change, thereby calculating a quantified condensation risk index.

[0044] When the predicted risk of condensation reaches a preset warning level, the controller 4 will activate the active dehumidification module 3 in low-power mode. The preset warning level is a configurable threshold indicating the degree of risk requiring preventative measures. Low-power mode means that the heating unit and the airflow drive unit 6 operate at levels below their maximum rated power. For example, the heating unit can be applied with lower voltage or current to generate less heat; the airflow drive unit 6 can operate at a lower speed to generate weaker airflow. This low-power activation method aims to gently increase the temperature of the internal cavity 11 and promote air circulation, thereby intervening in advance before the risk of condensation reaches a critical state and effectively preventing condensation from occurring.

[0045] Through the above technical solution, this application can achieve early warning and proactive intervention for condensation risks. The controller 4 relies not only on internal environmental parameters but also on external environmental temperature for comprehensive judgment, thus enabling earlier identification of potential condensation risks. Before the risk reaches a critical point, the active dehumidification module 3 is activated in low-power mode, which can gently regulate the environment of the internal cavity 11 with lower energy consumption, effectively preventing condensation formation. Compared to passive response, this preventative control strategy significantly improves the efficiency and reliability of anti-condensation measures, while reducing system operating energy consumption, extending the lifespan of internal components of the display screen, and ensuring stable operation of the industrial control display screen in complex environments.

[0046] In some embodiments described above in this application, a smart display system with detachable thermal circulation dehumidification is proposed, which includes an active dehumidification module 3 detachably mounted on the back of the display body. However, in practical applications, the installation, removal, and electrical connection between the active dehumidification module 3 and the controller 4 may present problems such as inconvenience, long processing time, or insufficient connection reliability. Especially in industrial environments where frequent maintenance or module replacement is required, these problems can affect the normal operating efficiency and maintenance costs of the equipment.

[0047] In this regard, this application further proposes that the back of the display screen body is provided with an installation interface 12, the active dehumidification module 3 is detachably connected to the installation interface 12 by a snap fastener, and is provided with an electrical connector 13 for quick plugging and unplugging with the controller 4.

[0048] Specifically, the back of the display screen body is provided with a mounting interface 12. This mounting interface 12 is a structured area or device reserved on the back of the display screen body for physically connecting the active dehumidification module 3. This interface can be designed as a groove, boss, guide rail, or mating groove, etc. Its main function is to provide a standardized and stable physical fixing point for the active dehumidification module 3, ensuring that the module can be accurately and stably installed in place. The design of the mounting interface 12 fully considers the size, weight, stress conditions, and installation direction of the active dehumidification module 3 to ensure the stability and reliability of the connection.

[0049] The active dehumidification module 3 is detachably connected to the mounting interface 12 via a snap-fit. A snap-fit ​​is a common mechanical connector; its working principle typically utilizes elastic deformation or structural fit to achieve quick locking and unlocking of components, thus enabling a detachable connection. This snap-fit ​​can be a claw or tongue integrated into the active dehumidification module 3, engaging with slots or holes on the mounting interface 12; it can also be an independent spring snap-fit, rotary snap-fit, or push-pull snap-fit. The advantage of snap-fit ​​connections is that the active dehumidification module 3 can be quickly installed and disassembled without the need for special tools, and it usually has a certain self-locking capability, effectively preventing the module from accidentally falling off due to vibration or other external forces during operation. When designing the snap-fit, material strength, elastic fatigue life, and operational feel are comprehensively considered to ensure a secure connection and convenient disassembly.

[0050] Furthermore, the active dehumidification module 3 is also equipped with an electrical connector 13 for quick plugging and unplugging with the controller 4. The electrical connector 13 is a device for achieving electrical connection and disconnection between circuits; its "quick plug" characteristic means that electrical connection or disconnection operations can be quickly completed without tools or with only simple tools. One end of the connector is connected to the internal circuitry of the active dehumidification module 3, and the other end is electrically connected to the controller 4. Common quick-plug electrical connectors 13 include aviation plugs, circular connectors, or rectangular connectors, which typically feature foolproof designs, reliable locking mechanisms (such as threaded locking, snap-locking), and excellent conductivity. The connector's design ensures that the pins are not damaged during plugging and unplugging, and that the connection is reliable. It also has good vibration resistance, dust resistance, and even moisture resistance to adapt to harsh industrial control environments. The quick plug feature significantly improves the efficiency and reliability of electrical connections.

[0051] Through the above technical solution, the mounting interface 12 on the back of the display screen body is detachably connected to the active dehumidification module 3 via a snap-fit ​​mechanism. It is also equipped with a quick-connect electrical connector 13, making the installation and removal of the active dehumidification module 3 extremely convenient and efficient. This design allows for quick module replacement or maintenance without the need for additional tools, significantly shortening operation time and reducing maintenance difficulty and cost. Furthermore, the quick-connect electrical connector 13 ensures the reliability and stability of the electrical connection, avoiding potential contact problems or connection errors that may occur with traditional wiring methods. This improves the operational reliability and maintenance efficiency of the entire industrial control display system, making it particularly suitable for industrial applications requiring rapid response and high reliability.

[0052] In some embodiments described above, the airflow drive unit 6 is positioned at the connection between the support frame 2 and the display screen body to drive air circulation within the internal cavity 11. However, in practical applications, if the air intake path of the airflow drive unit 6 is unclear or restricted, it may affect its driving efficiency and the uniformity of air circulation within the internal cavity 11, thereby reducing the anti-condensation effect.

[0053] In this regard, this application further proposes that an air inlet duct is formed at the connection between the support frame 2 and the display screen body, and the airflow drive unit 6 is disposed in the air inlet duct.

[0054] Specifically, the air inlet duct refers to a specific channel formed through structural design or component cooperation in the area where the support frame 2 connects to the display screen body, used to guide external air into the internal cavity 11. This air inlet duct can be a reserved gap, a molded channel, or a closed or semi-closed path defined by the geometry of the connecting components. Its main function is to provide a clear and efficient air inlet for the airflow drive unit 6, ensuring that air can be smoothly drawn in. The airflow drive unit 6, for example, can be a fan, precisely installed or integrated inside the air inlet duct. This means that the air intake side of the airflow drive unit 6 is tightly fitted with the air inlet duct, allowing the airflow it drives to completely pass through the duct into the internal cavity 11. This arrangement ensures that the airflow drive unit 6 can operate with optimal efficiency, avoiding efficiency losses due to air intake obstruction or airflow dispersion.

[0055] Through the above technical solution, a dedicated air intake duct is formed at the connection between the support frame 2 and the display screen body, and the airflow drive unit 6 is located within this duct, providing a clear and unobstructed air intake path for the airflow drive unit 6. This significantly improves the air intake efficiency and driving capability of the airflow drive unit 6, ensuring that the air within the internal cavity 11 can be circulated more effectively. As a result, the heat generated by the heating unit can be more evenly distributed to all corners of the internal cavity 11, especially the back area of ​​the display screen panel, thereby more quickly and thoroughly raising the internal temperature and reducing humidity, effectively preventing condensation. This optimized airflow organization significantly improves the working efficiency and reliability of the entire anti-condensation system, ensuring the stable operation of the industrial control display screen in complex environments.

[0056] In some embodiments described above, an intelligent display system with detachable thermal circulation dehumidification is proposed. This system heats and circulates air within the internal cavity 11 via an active dehumidification module 3. An airflow drive unit 6 is located within the air intake duct formed at the connection between the support frame 2 and the display body, driving air circulation within the internal cavity 11. However, in actual industrial applications, the air often contains a large amount of dust and particulate matter. When the airflow drive unit 6 operates, these impurities from the external air enter the internal cavity 11 with the airflow. Long-term accumulation can lead to dust buildup on the surfaces of internal components (such as the heating unit, environmental monitoring module, and display panel), affecting their normal operating efficiency and lifespan, and potentially even reducing the display quality.

[0057] In this regard, this application further proposes that a dust filter 8 is detachably installed at the inlet of the air inlet duct. This dust filter 8 is a device for filtering dust, particulate matter, and other impurities from the air. Specifically, the dust filter 8 can be made of porous materials, such as polyurethane foam, non-woven fabric, glass fiber, or activated carbon fiber, and its pore size can be selected according to the size of dust particles in the actual application environment and the required filtration efficiency. By installing the dust filter 8 at the inlet of the air inlet duct, dust and impurities in the outside air can be effectively prevented from entering the internal cavity 11, thereby protecting the internal components from contamination. Furthermore, the detachable installation of the dust filter 8 means that it can be easily removed and installed from the air inlet duct, for example, through a snap-fit, magnetic, or sliding structure. This greatly facilitates users in performing regular cleaning or replacement to maintain its filtration performance and the normal operation of the system.

[0058] By employing the aforementioned technical solution, a removable dust filter 8 is installed at the air inlet of the industrial control display screen, effectively preventing dust and particulate matter from the external environment from entering the internal cavity 11. This significantly reduces the risk of contamination and dust accumulation on internal components such as the heating unit, airflow drive unit 6, environmental monitoring module, and display panel, thereby maintaining the heat transfer efficiency of the heating unit, ensuring the stable operation of the airflow drive unit 6, and preserving the measurement accuracy of the environmental monitoring module. Simultaneously, the removable design makes cleaning and replacement of the dust filter 8 simple and quick, effectively extending the service life of the industrial control display screen, reducing maintenance costs, and ensuring long-term stable operation and display quality of the display screen in harsh industrial environments.

[0059] In this example, the industrial control display screen has an active dehumidification module 3 detachably mounted on the back of the display body. This module connects to the mounting interface 12 on the back of the display body via a snap-fit ​​and is equipped with an electrical connector 13 for quick plugging and unplugging with the controller 4, facilitating on-site installation and maintenance. The active dehumidification module 3 internally includes a PTC heater 5 as a heating unit and an axial fan 61 as an airflow drive unit 6. The PTC heater 5 is located on the side of the internal cavity 11, with its heating surface facing the central area of ​​the internal cavity 11. The axial fan 61 is located at the connection between the support frame 2 and the display body, specifically within the air inlet duct formed at the connection point. A dust filter 8 can be detachably installed at the inlet of this air inlet duct to prevent dust from entering the internal cavity 11.

[0060] In general, this embodiment includes an environmental monitoring module within the internal cavity 11 of the display screen. This module includes a first temperature sensor 71 for real-time monitoring of the ambient temperature of the internal cavity 11; a humidity sensor 72 for real-time monitoring of the humidity of the internal cavity 11; and a panel temperature sensor, located within the internal cavity 11 and near the back of the display panel, for monitoring the surface temperature of the panel. A controller 4 is electrically connected to the heating unit, the airflow drive unit 6, and the environmental monitoring module. The controller 4 continuously acquires the temperature, humidity, and panel temperature of the internal cavity 11. When the controller 4 detects a decrease in the internal cavity 11 temperature or panel temperature and an increase in humidity, it calculates the current internal dew point temperature and determines that there is a risk of condensation if the internal cavity 11 temperature or panel temperature is below or close to a preset threshold value. At this time, the controller 4 immediately activates the active dehumidification module 3. The PTC heater 5 starts working, generating heat to increase the air temperature within the internal cavity 11. Simultaneously, the axial fan 61 starts, driving the air within the internal cavity 11 to circulate. Since the axial fan 61 is located inside the air inlet duct, the airflow it generates can effectively and evenly distribute the heat generated by the PTC heater 5 within the internal cavity 11. To further optimize airflow circulation and heat distribution, a flow guiding structure is also provided inside the internal cavity 11. This structure includes a flow guide shroud surrounding the PTC heater 5 and flow guide ribs located on the inner wall of the internal cavity 11. These structures work together to guide the airflow to form a closed circulation duct, ensuring that heat can be efficiently and evenly transferred to all corners of the internal cavity 11, especially areas prone to condensation such as the back of the display panel.

[0061] In this way, the air temperature inside the internal cavity 11 and the surface temperature of the internal components are raised to a target safe range above the dew point temperature, effectively preventing water vapor condensation and eliminating condensation. Unlike relying solely on external heating, this solution achieves uniform heating inside the cavity through internal heating and forced airflow circulation, avoiding the appearance of localized "cold zones" and actively raising the internal temperature to a safe range, fundamentally solving the condensation problem. Furthermore, the controller 4 can also acquire the external ambient temperature of the display screen. Based on the difference between the external ambient temperature and the internal temperature, the controller 4 can predict potential condensation risks. For example, when the external temperature drops sharply while the internal temperature has not yet decreased significantly, the controller 4 can activate the active dehumidification module 3 in low-power mode for preventative dehumidification when the condensation risk reaches a preset warning level. This predictive activation mechanism, compared to passively waiting for condensation to occur before processing, can intervene earlier, further reducing the condensation risk and optimizing energy consumption. Once the temperature of the internal cavity 11 continues to rise and stabilizes within the target safe range above the internal dew point temperature, the controller 4 will stop or adjust the working state of the active dehumidification module 3 according to preset logic, such as reducing heating power or pausing fan operation to save energy. The entire process achieves intelligent, proactive, and precise control of the internal environment, effectively ensuring the stable and reliable operation of the industrial control display screen in harsh environments.

[0062] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0063] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A detachable heat circulation dehumidification intelligent display system, comprising a display body, an internal cavity located within the display body, and a support frame connected to the display body for installation and fixation, characterized in that, It also includes an active dehumidification module that is detachably mounted on the back of the display screen body, an environmental monitoring module and a controller located in the internal cavity; The active dehumidification module includes a heating unit for heating the internal cavity and an airflow driving unit. The airflow driving unit is located at the connection between the support frame and the display screen body and is used to drive the air circulation in the internal cavity so that the heat generated by the heating unit is evenly distributed in the internal cavity. The environmental monitoring module includes a first temperature sensor for monitoring the temperature of the internal cavity and a humidity sensor for monitoring the humidity of the internal cavity. Furthermore, the controller is electrically connected to the heating unit, the airflow drive unit, and the environmental monitoring module, respectively, and is used to control the working state of the active dehumidification module based at least on the temperature and humidity information of the internal cavity.

2. The detachable thermal circulation dehumidification intelligent display system according to claim 1, characterized in that, The heating unit is a PTC heater, the airflow drive unit is an axial fan, and the heating unit is located on the side of the internal cavity with its heating surface facing the central area of ​​the internal cavity.

3. The detachable thermal circulation dehumidification intelligent display system according to claim 2, characterized in that, The internal cavity is provided with a flow guiding structure, which includes a flow guiding shroud surrounding the heating unit and flow guiding ribs provided on the inner wall of the internal cavity, for guiding airflow to form a closed-loop air duct.

4. The detachable thermal circulation dehumidification intelligent display system according to claim 1, characterized in that, The environmental monitoring module also includes a panel temperature sensor located within the internal cavity and near the back of the display panel.

5. The detachable thermal circulation dehumidification intelligent display system according to claim 1, characterized in that, The controller is used for: The temperature and humidity of the internal cavity are obtained, and the current internal dew point temperature is calculated. The temperature of the internal cavity or the panel temperature is compared with the internal dew point temperature. When the temperature is lower than or close to a preset threshold of the internal dew point temperature, the heating unit and the airflow drive unit are activated until the temperature rises to a target safe range higher than the internal dew point temperature.

6. The detachable thermal circulation dehumidification intelligent display system according to claim 5, characterized in that, The controller is also used for: Obtain the external ambient temperature of the display screen body; The risk of condensation is predicted based on the external ambient temperature and the internal temperature. When the risk of condensation reaches a preset warning level, the active dehumidification module is activated in low power mode.

7. The detachable thermal circulation dehumidification intelligent display system according to claim 1, characterized in that, The back of the display screen body is provided with an installation interface. The active dehumidification module is detachably connected to the installation interface by a snap-fit ​​and is provided with an electrical connector for quick plugging and unplugging with the controller.

8. The detachable thermal circulation dehumidification intelligent display system according to claim 1, characterized in that, An air inlet duct is formed at the connection between the support frame and the display screen body, and the airflow drive unit is located inside the air inlet duct.

9. The detachable thermal circulation dehumidification intelligent display system according to claim 8, characterized in that, A dust filter can be detachably installed at the inlet of the air intake duct.

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