Vehicle Display Optics With Adjustable Combiner Height
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Solution Overview
Problem
Existing vehicle display devices require extensive design man-hours due to the need for custom designs for each vehicle type, which increases development time and costs.
Innovation Solution
A vehicle display device design that includes a common display device unit with an image display device, a combiner unit with adjustable display height, and a control unit that adjusts the image display position based on the assembled combiner unit, allowing for compatibility with multiple vehicle types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the entire display device is designed from scratch for each vehicle type, then the display device can be optimized for each specific vehicle, but many design man-hours are required
Solution Approach 1:
The display device is divided into a common display device unit and vehicle-specific combiner units. The display device unit including the image display device and control unit is segmented as a reusable module that can be shared across multiple vehicle types, while only the combiner units need to be customized for each vehicle, significantly reducing design man-hours
Solution Approach 2:
The display device unit is designed with universal functionality to be compatible with multiple vehicle types. By making the display device unit universal and interchangeable with different combiner units, the system achieves adaptability without requiring complete redesign for each vehicle type
2Loss of time
If the display device unit is made common across multiple vehicle types, then design man-hours are reduced, but the display position must be adjusted for different combiner units
Solution Approach 1:
The reflection member is made rotatable within a predetermined range to dynamically adjust the projection position of display light in the vehicle vertical direction. This dynamic adjustment capability allows the common display device unit to adapt to different combiner unit heights without requiring complex mechanical reconfiguration
Solution Approach 2:
The control unit changes the rotation angle parameter of the reflection member to adjust the projection position of display light. By controlling the rotation angle within a predetermined range, the system achieves position adaptation for different combiner units through simple parameter adjustment rather than complex structural changes
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 design reduces design man-hours by allowing the display device unit to be shared across various vehicle types, while ensuring optimal display positioning for different combiner units, thus enhancing efficiency and cost-effectiveness.
Implementation Method 1
the reflection member reflects display light of the lower display region toward the combiner
Data Source
AI summary
A vehicle display device includes a display device unit and a combiner unit. The display device unit includes an image display device, an accommodation unit that accommodates a lower display region, a reflection member that is rotatable, a motor that turns the reflection member, and a control unit. The combiner unit includes a hood portion and a combiner that is disposed closer to an eye point than the upper display region. The reflection member reflects display light in the lower display region toward the combiner, and a rotation direction of the reflection member is a direction in which a projection position of the display light is changed in a vehicle vertical direction. The control unit sets a display position of an image in the image vertical direction in the lower display region so that the motor can turn the reflection member to a rotation position corresponding to the eye point.