Fanless Cooling for Vehicle Display Mirrors via Electrostatic Ion Acceleration
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Solution Overview
Problem
Conventional display mirrors for vehicles lack an efficient cooling system, particularly in fanless designs, which can lead to overheating of electronic components and reduced performance.
Innovation Solution
The integration of an electrostatic fluid accelerator within the display mirror assembly, comprising a corona electrode and a collector electrode, which moves ions to create a cooling effect without the use of fans, effectively cooling the printed circuit board and other components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional cooling systems with fans are used in display mirrors, then cooling efficiency is improved, but device complexity and moving parts increase
Solution Approach 1:
The patent replaces the mechanical fan-based cooling system with an electrostatic fluid accelerator that uses electric fields to move ions and generate fluid flow. This substitution eliminates moving parts while maintaining cooling functionality, directly resolving the contradiction between cooling efficiency and device complexity
Solution Approach 2:
The patent introduces ions as an intermediary medium between the electrostatic fluid accelerator and the cooling process. The ions are accelerated by electric fields to create fluid flow that removes heat, serving as a mediator that enables cooling without mechanical components
2Temperature
If fan-based cooling systems are used, then cooling capability is improved, but reliability decreases due to moving parts
Solution Approach 1:
By replacing the mechanical fan with an electrostatic fluid accelerator that uses electric fields to drive ion movement and fluid flow, the patent eliminates wear-prone moving parts. This substitution maintains cooling capability while significantly improving reliability through a solid-state, maintenance-free system
3Device complexity
If electrostatic fluid accelerator is integrated, then device complexity increases, but manufacturing precision requirements are reduced
Solution Approach 1:
The electrostatic fluid accelerator serves multiple functions: it cools electronic components, removes heat from the display mirror housing, and can be integrated with existing circuit boards. This multi-functionality justifies the added device complexity by eliminating the need for separate cooling systems and reducing overall manufacturing precision requirements across multiple 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 provides an efficient and fanless cooling mechanism that maintains the electronic components at a stable temperature, using minimal electricity and not producing significant heat or light radiation, thus enhancing the reliability and performance of the display mirror.
Implementation Method 1
an electrostatic fluid accelerator disposed within the housing
Implementation Method 2
the electrostatic fluid accelerator may be configured to move ions within the housing
Implementation Method 3
The electrostatic fluid accelerator may comprise a corona electrode and a collector electrode
Data Source
AI summary
A display mirror assembly for a vehicle includes a housing. An electro-optic element may be operably coupled with the housing. A circuit board may be adjacent the electro-optic element. An electrostatic fluid accelerator may be adjacent the circuit board and may be configured to move ions within the housing. An actuator device may be disposed on the housing and may be operably coupled with the electro-optic element. The actuator device may be adjustable to tilt the electro-optic element in one direction, thereby moving the electro-optic element to an off-axis position which approximately simultaneously changes an activation state of a display module. The actuator device may be also adjustable to tilt the electro-optic element in another direction, thereby moving the electro-optic element to an on-axis position which approximately simultaneously changes the activation state of the display module.