1. Rain and Water Protection
Module Sealing: The module interior is filled with waterproof adhesive, and a waterproof coating is applied to the front, forming a double-sealed barrier to prevent rainwater penetration that could cause short circuits or leakage in electronic components.
Waterproof rubber rings are used at the connection between the module and the cabinet to ensure seamless joints, meeting IP68 protection standards (completely preventing dust ingress and unaffected by prolonged immersion in water).
Structural Optimization: A dedicated waterproof box is used to encapsulate critical electronic components (such as power supplies and control cards), preventing direct exposure to rainwater.
The overall design of the display screen must consider drainage slope to prevent water accumulation; drainage holes can be added to the bottom of the cabinet.
2. Wind and Earthquake Resistance
Installation Structure Reinforcement: A high-strength load-bearing steel structure is selected based on the installation method (wall-mounted, column-mounted, rooftop, etc.) to ensure it can withstand the maximum local wind force (e.g., coastal areas should be designed to withstand a Category 12 typhoon).
During wall foundation installation, the steel structure must be fixed to the concrete structure using expansion bolts or chemical anchors. For column installation, inclined cables or ground anchors should be installed to enhance stability.
Dynamic Load Testing: Wind tunnel testing or simulation calculations must be performed before installation to verify the structure's wind resistance under extreme weather conditions.
Regularly inspect steel structure connections (such as bolts and welds) for looseness or corrosion, and replace aging components promptly.
3. High Temperature Protection
Optimized Heat Dissipation Design:
Macroscopic Ventilation Structure: Design ventilation holes or slots on the display screen casing to utilize air convection to reduce internal temperature. Dust filters must be provided to prevent foreign objects from entering.
High Thermal Conductivity Materials: Use high-density, high-precision circuit boards to reduce component density and localized heat generation; use materials with excellent thermal conductivity, such as aluminum or copper, for heat sinks.
Auxiliary Heat Dissipation Equipment: In high-temperature environments (such as midday in summer) or enclosed spaces (such as indoor locations without air conditioning), industrial air conditioners or axial fans can be installed for forced cooling, but fans should be kept away from the display screen to reduce circuit load.
Temperature Monitoring System: A temperature sensor is installed to automatically activate cooling equipment or reduce screen brightness when the internal temperature exceeds a threshold.
4. Fire Protection
Flame-retardant Material Selection: The internal wiring of the display screen must use flame-retardant wires (such as ZR-BV type), whose insulation layer is not easily combustible at high temperatures and does not release toxic gases when burning.
The casings of critical components such as the power supply and control cards use engineering plastics with a fire resistance rating of V-0 (such as PC/ABS alloy), which can effectively retard flames and delay the spread of fire.
Circuit Protection Design: Overload protection devices (such as fuses and air switches) are installed to automatically cut off the power supply when the current is abnormal, preventing overheating and fires.
Regularly check the wiring for aging, especially at interfaces and frequently bent areas, and replace damaged wires promptly.
Other Supplementary Measures
Lightning Protection: A lightning rod is installed on the top of the display screen, and lightning is conducted to the ground through a grounding wire to prevent damage to the equipment from lightning strikes.
Regular maintenance: Conduct a comprehensive inspection quarterly, including cleaning dust from the display screen surface, testing waterproof seals, and checking the operational status of cooling equipment.
Emergency plans: Develop emergency response procedures for extreme weather events (such as typhoons and heavy rain), such as reducing display screen brightness in advance and shutting down non-essential equipment.
