Vehicle Head-Up Display Automated Combiner Elevation
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Solution Overview
Problem
Existing head up display devices for vehicles require manual operation of the combiner, which degrades convenience of use due to the need for manual opening and closing, affecting the distance for virtual image optical magnification and overall user experience.
Innovation Solution
A head up display device with a housing, a vertically elevatable combiner, and a system of interlocking covers and gears operated by a step motor and reduction gears, allowing automated elevation and alignment of the combiner and mirror to project images onto the windshield, enhancing user convenience and simplifying operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the combiner is manually opened and closed, then the structure is simple, but the convenience of use is degraded
Solution Approach 1:
The system performs automatic control where the combiner and mirror open/close themselves in response to detection signals without requiring manual operation by the user. The controller autonomously manages the opening and closing sequences based on detection results, eliminating the need for manual intervention while maintaining structural simplicity.
Solution Approach 2:
The patent replaces manual mechanical operation with an automated control system that uses sensors and controllers to actuate the combiner and mirror. This substitution of manual mechanical control with an automated electromechanical system improves convenience while managing complexity through integrated control logic.
2Loss of time
If the combiner is manually operated, then the device complexity is low, but the operation time is increased
Solution Approach 1:
The system performs preliminary detection and preparation actions automatically before the user needs to view information. The controller detects conditions and pre-positions the combiner and mirror, eliminating delays associated with manual operation and reducing the time the user needs to spend interacting with the system.
Solution Approach 2:
The combiner and mirror system serves itself by automatically detecting conditions and adjusting positions without user intervention. This self-service capability reduces operation time by eliminating manual steps while the integrated control system manages the complexity of coordination between multiple moving parts.
3Measurement precision
If the combiner distance is adjusted manually, then the structure is simple, but the focus accuracy may be affected
Solution Approach 1:
The system uses detection signals to monitor the position and focus conditions of the combiner and mirror. Based on this feedback, the controller automatically adjusts the elevation and positioning to maintain optimal focus accuracy. This closed-loop feedback mechanism ensures precise focus while managing the complexity of the elevation mechanism through intelligent control.
Solution Approach 2:
Manual mechanical adjustment of combiner distance is replaced with an automated elevation mechanism controlled by sensors and a controller. This substitution provides more precise and consistent positioning compared to manual adjustment, improving focus accuracy while the control system manages the added mechanical complexity through automated coordination.
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 automated system improves user convenience by allowing hands-free operation of the head up display, maintaining focus accuracy with an aspherical lens, and simplifying the projection of vehicle information as virtual images, enhancing the overall driving experience.
Implementation Method 1
a mirror configured to rotate by being operated together with the first cover to be opened and closed and be opened together at the time of opening the first cover to reflect the video provided from the display unit to the combiner
Implementation Method 2
the head up display device for a vehicle according to the related art includes a combiner 20, which is an aspherical lens
Data Source
AI summary
A head up display device for a vehicle includes: a housing mounted on a dashboard of the vehicle; a display unit that generates an image or a video; a combiner vertically elevated from the housing; a first cover operated together with the combiner to be opened and closed; a second cover operated together with the combiner to be opened and closed; and a mirror that rotates together with the first cover to be opened at the time of opening the first cover to reflect the video provided from the display unit to the combiner.