Vehicle Instrument Panel Guide Section for HUD Defogging
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Solution Overview
Problem
The existing vehicle instrument panel structures are inadequate in efficiently removing fog from the windshield area where a head-up display device projects images, as larger head-up display devices reduce the airflow width for defrosters, impairing their ability to clear fog effectively.
Innovation Solution
Incorporating a guide section with a specific cross-section profile between the head-up display device and the defroster within the instrument panel, which utilizes the Coanda effect to direct airflow towards the projection area, ensuring efficient fog removal by optimizing airflow distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a larger head-up display device is used to display more information, then the information display capability is improved, but the width for conveying air from the defroster is reduced, worsening the defogging performance
Solution Approach 1:
A guide section is introduced as an intermediary component between the defroster and the windshield projection area. This guide section has a specific cross-section profile that directs airflow from the defroster toward the projection area, ensuring that even with a larger head-up display device occupying space, the airflow can still effectively reach the fogged areas for defogging
2Area of stationary object
If the head-up display device and defroster are disposed alongside each other in the vehicle width direction, then the space utilization is improved, but the airflow width for the defroster is reduced, worsening the fog removal capability
Solution Approach 1:
The guide section is designed with a specific local cross-section profile that is optimized to direct airflow. This local structural feature creates a focused airflow path that compensates for the reduced overall airflow width caused by the side-by-side arrangement of the head-up display device and defroster, maintaining effective fog removal capability
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 proposed vehicle instrument panel structure efficiently removes fog from the windshield area by directing airflow directly to the projection area, enhancing defogging performance while maintaining or improving external styling.
Implementation Method 1
the guide section has a cross-section profile as sectioned along the vehicle width direction profiled so as to cause airflow from the defroster to cling to a surface of the guide section
Data Source
AI summary
A vehicle instrument panel structure including: a head-up display device that is provided within an instrument panel positioned at a front section of a vehicle cabin and that displays information by projecting light onto a windshield; a defroster that is provided within the instrument panel so as to be disposed alongside the head-up display device in a vehicle width direction, and that conveys air toward the windshield; a guide section that is provided at an upper face of the instrument panel so as to be disposed between the head-up display device and the defroster, and that has a cross-section profile as sectioned along the vehicle width direction profiled so as to cause airflow from the defroster to cling to a surface of the guide section such that the airflow is blown toward an area of the windshield in which information is displayed by the head-up display device.