Display Assembly Partition for Heat and EMI Isolation
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Solution Overview
Problem
Existing vehicle imaging device display assemblies face issues with heat dissipation and electromagnetic interference (EMI) due to the presence of electronic control units, which can lead to performance degradation and reduced lifespan of the display panel.
Innovation Solution
A display assembly with a thermally insulating layer made of conductive material that splits the housing into cavities to prevent heat and electromagnetic radiation from crossing between the control units, while also providing effective thermal insulation and EMI shielding through a Faraday cage configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a plastic frame is used to thermally insulate the display from the second ECU, then heat transfer is reduced, but electromagnetic radiation shielding is insufficient
Solution Approach 1:
The patent employs a composite material structure where a plastic frame provides thermal insulation while a metallic layer (aluminum or other metal coating) is applied to the same frame to provide electromagnetic radiation shielding. This composite approach allows the single component to address both thermal and electromagnetic protection requirements simultaneously.
2Volume of moving object
If ECUs are located close to each other to save space, then device compactness is improved, but heat and electromagnetic interference increase
Solution Approach 1:
The patent divides the housing interior into separate cavities using a partition wall structure. This segmentation allows ECUs to be positioned in close proximity while maintaining physical separation between heat-generating and display components, thus reducing thermal and electromagnetic interference while preserving compact form factor.
Solution Approach 2:
The plastic frame with metallic layer acts as an intermediary component positioned between the second ECU and the display. This intermediary structure blocks both heat transfer and electromagnetic radiation from reaching the display, enabling close ECU placement without compromising display performance.
3Temperature
If a thermally insulating layer is added between control units, then heat transfer is reduced, but electromagnetic radiation shielding is not provided
Solution Approach 1:
The patent enhances the thermally insulating layer by integrating a metallic coating (aluminum or other metal) onto the plastic frame surface. This composite structure maintains the thermal insulation properties of the plastic while adding electromagnetic radiation shielding capabilities through the conductive metallic layer.
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 effectively balances thermal dissipation and EMI shielding, preventing heat from one control unit from affecting the display and reducing electromagnetic interference, thereby enhancing the reliability and performance of the imaging device.
Implementation Method 1
a thermally insulating layer arranged between the first control unit and the second control unit... The thermally insulating layer prevents an increase to the temperature around the display by acting as a thermal insulator
Implementation Method 2
a housing configured for being electrically conductive and configured for partially encasing the first control unit, the second control unit and the thermally insulating layer... The thermally insulating layer additionally comprises an electrically conductive material such that the thermally insulating layer is electrically conductive
Data Source
AI summary
A display assembly for an imaging device including a display panel, a display, a first control unit, a second control unit and a thermally insulating layer, and a housing. The thermally insulating layer divides the housing in at least a first cavity including the first control unit and a second cavity including the second control unit. The thermally insulating layer preventing heat generated in the first cavity or the second cavity from reaching the other cavity and including an electrically conductive material to at least partially shield electromagnetic radiation generated in the first or the second cavity from reaching the other cavity.