Sealed Outdoor Display Cooling via Heat Exchange Plate
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Solution Overview
Problem
Outdoor display devices face issues with heat management due to direct sunlight exposure and heat generation from backlight units, leading to panel deterioration and high maintenance costs associated with air filter replacement, as well as increased thickness from incorporating fans and air filters.
Innovation Solution
A sealed cooling structure is implemented in outdoor display devices, featuring a closed-loop first cooling passage for internal air circulation and a second passage for external air exchange, using a heat exchange device with a copper, stainless steel, or aluminum cooling plate, and a heat sink or heat pipe, without an air filter, to enhance cooling efficiency and reduce environmental exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling device with fan and air filter is used to radiate heat from the light source, then heat dissipation is improved, but maintenance costs increase due to periodic filter replacement
Solution Approach 1:
The patent removes the air filter component from the cooling device, extracting the harmful element that requires maintenance. The cooling system operates without a filter, eliminating the need for periodic replacement and reducing maintenance costs while maintaining heat dissipation functionality through the fan and heat sink structure.
Solution Approach 2:
The cooling device is designed to operate autonomously without requiring filter replacement. The system serves itself by maintaining cooling performance through the fan-driven air flow and heat sink structure, eliminating the need for human intervention for filter maintenance.
2Temperature
If a cooling device with fan and air filter is used to radiate heat, then heat dissipation is improved, but product thickness increases due to fan and air filter components
Solution Approach 1:
The air filter is extracted from the cooling device structure, removing the component that adds thickness. The cooling function is maintained through the fan and heat sink, achieving heat dissipation without the additional thickness imposed by a filter assembly.
Solution Approach 2:
The cooling functions are merged into a more compact integration where the fan, heat sink, and air flow path are combined efficiently. This consolidation reduces the overall thickness compared to a separate fan-filter assembly while maintaining effective heat dissipation.
3Object-affected harmful factors
If air filter is included in the cooling device, then air quality is improved, but production costs increase
Solution Approach 1:
The air filter is completely removed from the cooling device design. The system operates without filtering the air, accepting that outdoor air quality variations will occur but eliminating the production costs and complexity associated with filter integration and replacement mechanisms.
Solution Approach 2:
The patent adopts a approach where no filter is used, effectively eliminating the need for expensive filter components and their replacement infrastructure. The system accepts temporary air quality variations rather than investing in disposable filter components.
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
This solution improves cooling efficiency, reduces maintenance costs by eliminating the need for air filters, and provides a slim, safer design by isolating the internal cooling system from external dust and moisture, while effectively managing heat generated from the display panel and backlight units.
Implementation Method 1
a cooling plate disposed in the case, and configured to receive heat of the display module
Implementation Method 2
The heat exchange device receives heat from the first portion, and includes a second portion disposed over a second cooling passage
Implementation Method 3
a first cooling passage formed in a manner that air moves to the display module
Implementation Method 4
a circulation fan disposed over the first cooling passage to circulate the air
Implementation Method 5
The heat exchange device may include any one of a heat sink, a heat pipe, and a plurality of cooling fins
Data Source
AI summary
Provided is a display apparatus including: a case having an inlet; and an outlet; a display module disposed in the case and including a display panel configured to display an image; and a heat exchange device configured to receive heat from the display module and including: a first portion provided in a first cooling passage, air in the first passage moving over the display module; and a second portion provided in a second cooling passage, air in the second cooling passage moving over the heat exchange device, wherein heat generated from the display module is transferred to the first portion via the air in the first cooling passage, wherein the heat transferred to the first portion is transferred to the second portion, and wherein the air suctioned through the inlet is heat-exchanged in the second cooling passage with the second portion and discharged through the outlet.