Liquid-Submerged Display Panel Thermal Management
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Solution Overview
Problem
Existing outdoor display apparatuses require regular maintenance, are prone to frost damage, have high power consumption, are vulnerable to vandalism, and suffer from poor visibility and noise issues due to air filtration and cooling systems.
Innovation Solution
A liquid-tight encasing with a thermal conductive liquid submerges the direct view display panel, eliminating the need for air cooling and filtration, reducing maintenance, and enhancing visibility and durability while using a thinner, non-laminated transparent window and absorbing impacts and UV light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air filters and cooling systems are used in outdoor display apparatus, then cooling function is provided, but maintenance requirements increase and visibility deteriorates
Solution Approach 1:
The patent removes the air filter and air cooling system from the display apparatus, extracting the harmful components that required maintenance. The display module is placed in direct contact with the exterior environment, eliminating the need for air filtration and associated maintenance activities.
Solution Approach 2:
The mechanical air cooling system with fans and filters is replaced by direct environmental contact. The display module operates without forced air circulation, using natural convection and radiation for thermal management, thereby eliminating maintenance-intensive mechanical components.
2Temperature
If air filters and cooling systems are used in outdoor display apparatus, then cooling function is provided, but visibility and view angle are reduced
Solution Approach 1:
The air filter and transparent protective members are removed from the system. This extraction eliminates the causes of light reflection, contamination, and view angle restriction, allowing maximum visibility and direct viewing of the display from all angles.
Solution Approach 2:
The patent employs a flexible waterproof coating or thin membrane on the display module that provides environmental protection without creating the optical barriers of traditional transparent covers. This thin film approach maintains optical clarity while providing necessary protection.
3Reliability
If transparent members are thickened and laminated to prevent vandalism, then protection is improved, but cost increases and light output is attenuated
Solution Approach 1:
The patent removes the thick laminated transparent protective members entirely. The display module operates without these bulky protective layers, achieving vandalism resistance through alternative means such as robust housing design and strategic component placement rather than optical barriers.
Solution Approach 2:
Instead of protecting the display by placing transparent barriers in front of it, the patent inverts the approach by making the display module itself more resistant to damage through ruggedized construction and by positioning it where it can withstand environmental stresses without requiring thick protective glazing.
4Temperature
If fans are used for cooling, then cooling function is provided, but power consumption increases and noise is generated
Solution Approach 1:
The mechanical fan-based forced convection cooling system is replaced with passive thermal management. The display module utilizes natural convection, radiation, and conduction through direct environmental contact, eliminating the need for powered fans and associated energy consumption and noise.
5Reliability
If continuous operation and heating are required to prevent moisture condensation and frost damage, then protection against environmental damage is provided, but power consumption increases
Solution Approach 1:
The patent removes the vulnerable air-filled enclosure that requires heating to prevent condensation and frost. By placing the display module in direct contact with the exterior environment without an air gap or air filter, the system eliminates the conditions that lead to moisture accumulation and frost formation, removing the need for continuous heating.
Solution Approach 2:
The patent creates a controlled microenvironment around the display module that prevents moisture condensation and frost damage without requiring heating. This may involve hydrophobic coatings or atmospheric control that creates an inert-like protective layer preventing water contact while allowing thermal exchange.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution reduces power consumption, increases lifespan, improves visibility, and enhances durability against vandalism and environmental factors, achieving lower noise and maintenance costs while maintaining high brightness and visibility.
Implementation Method 1
The liquid tight encasing is filled with a thermal conductive liquid such that the direct view display panel is submerged in the liquid
Implementation Method 2
absorbing impacts and UV light
Data Source
AI summary
A display apparatus comprises a thermal conductive liquid (46) in a liquid tight encasing (11) which has a transparent window (13). A direct view display panel (12) with a front area for displaying information is arranged inside the liquid tight encasing (11) in a position with respect to the transparent window (13) such that the information is viewable through the transparent window (13). The direct view display panel (12) is submerged in the thermal conductive liquid (46).