Rotating Display Panel Heatsink Thermal Management
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Solution Overview
Problem
Existing electronic panels for digital signs face difficulties in easy maintenance and heat management due to the presence of closed loop cooling circuits, which hinder access to the backlight and drivers, especially in outdoor and continuous operation environments.
Innovation Solution
The design separates the backlight and display assemblies, allowing the display to rotate and expose the backlight for easy maintenance, with a heatsink system for efficient cooling, including a closed circuit and thermal regeneration chamber to manage heat effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a closed loop cooling circuit is implemented to manage heat from the backlight and drivers, then heat management efficiency is improved, but accessibility for maintenance operations deteriorates
Solution Approach 1:
The patent divides the electronic panel into distinct functional modules: a first electronic module containing the backlight and drivers, and a second electronic module containing the display. This segmentation allows the cooling circuit to be configured separately from the display assembly, enabling maintenance access to the backlight components while maintaining effective heat management through the cooling circuit.
Solution Approach 2:
The patent introduces a cooling circuit as an intermediary element that manages heat between the first electronic module and the display assembly. The cooling circuit includes a cooling element positioned between the modules, which facilitates thermal management without interfering with the structural separation needed for maintenance access.
2Temperature
If the backlight and drivers are mounted on the rear surface of the containment casing, then heat dissipation is improved, but maintenance accessibility deteriorates
Solution Approach 1:
The patent separates the backlight assembly (including light sources and drivers) into a distinct first electronic module that can be independently accessed. This module is positioned within the containment casing but is structurally separable from the display assembly, allowing maintenance personnel to access and service the backlight components without disassembling the entire panel.
Solution Approach 2:
The patent implements a movable display assembly that can be rotated or removed from the containment casing. This dynamic configuration allows the display to be positioned for normal operation or moved aside to provide access to the backlight and drivers for maintenance, combining both heat dissipation benefits and maintenance accessibility.
3Device complexity
If a passive cooling system is used to reduce complexity, then device complexity is reduced, but heat removal capability deteriorates
Solution Approach 1:
The patent designs the cooling circuit to serve multiple functions: it cools the first electronic module (backlight and drivers), manages heat from the display assembly, and can operate in both active and passive modes. This multi-functional design allows the system to adapt to different operating conditions without requiring separate cooling systems, balancing complexity and heat removal capability.
Solution Approach 2:
The patent implements a cooling circuit that can change its operating parameters based on thermal conditions. The circuit includes control elements that adjust cooling intensity based on temperature sensors, allowing the system to switch between passive cooling (low power consumption) and active cooling (high heat removal capability) as needed, optimizing the balance between complexity and thermal management performance.
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 configuration enables straightforward maintenance and efficient heat management, ensuring continuous operation and reducing thermal accumulation, thus improving reliability and accessibility of the electronic panel.
Implementation Method 1
a first heatsink (13) arranged inside the containment structure (11), on which the backlight assembly (20) is mounted
Implementation Method 2
a closed circuit (51) for removing heat from the display assembly (30), wherein a cooling fluid circulates
Implementation Method 3
The regeneration chamber (53) is thermally associated with the first heatsink (13), in particular with the rear surface of the same
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The invention relates to an electronic panel (10) for digital signs comprising a backlight assembly (20) comprising a plurality of light sources (22) and electronic devices (21) for driving the same, a display assembly (30) comprising a plurality of layers configured to display images, a containment structure (11) in which said backlight assembly (20) is comprised and comprising a front opening (12) for accommodating said display assembly (30). The backlight assembly is mounted on a front surface (14a) of a first heatsink (13) facing the front opening (12) of the containment structure (11) and the plurality of light sources (22) and of electronic devices (21) for driving the same are mounted on the front surface (14a) of the first heatsink (13). The display assembly (30) is movable between an operating condition in which it faces said backlight assembly (20) and closes said front opening (12) of the containment structure (11) and a non-operating condition in which it is moved away from said backlight assembly (20) and opens said front opening (12) of the support structure (11).