Vehicle HUD Rotating Optical Unit Rear-View Mirror Mount
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Solution Overview
Problem
The installation of head-up displays (HUDs) in vehicles is limited by the available space in the passenger compartment, making it difficult to adjust the visible range of the displayed image effectively.
Innovation Solution
A display apparatus for vehicles that includes a substrate housing portion, an optical unit with a projection unit and a combiner, a turning member for rotational adjustment, and a plate-like attachment plate for mounting on a rear-view mirror, allowing the optical unit to be freely rotated without contacting the mirror, enabling adjustment of the visible range and installation in limited spaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the combiner is made movable to adjust visible range, then the driver can easily see the image, but the installation space required increases
Solution Approach 1:
The combiner is made rotatable around a rotation axis to enable adjustment of the visible range. The rotation mechanism allows the combiner to dynamically change its orientation angle, enabling the driver to easily adjust and view the displayed image at different positions without requiring additional installation space
Solution Approach 2:
The combiner is positioned at an inclined angle relative to the optical unit's optical axis, creating a spatial relationship where the combiner's surface normal forms a specific angle with the optical axis. This angular positioning in three-dimensional space allows the combiner to redirect light effectively while maintaining a compact installation footprint
2Volume of moving object
If the optical unit is mounted directly on the rear-view mirror, then space is saved, but the rotating optical unit may contact the mirror
Solution Approach 1:
A turning member is introduced as an intermediary component between the optical unit and the rear-view mirror. This turning member serves as a rotation support that enables the optical unit to rotate freely while maintaining a safe distance from the mirror surface, preventing contact damage while still achieving space-efficient installation
Solution Approach 2:
The turning member provides a rotation support that allows the optical unit to dynamically adjust its orientation. The rotation mechanism is designed to maintain a predetermined distance between the optical unit and the mirror during rotation, ensuring reliable operation without contact
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 configuration allows for adjustable and distortion-free image projection onto a combiner, enhancing user experience by providing a flexible and space-efficient solution for HUD installation in vehicles.
Implementation Method 1
The combiner transmits the light entering from the exterior of a vehicle and, simultaneously, reflects an image projected from an optical unit placed inside the vehicle
Data Source
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AI summary
An display apparatus, for a vehicle, according to one embodiment includes a substrate housing portion (100), an optical unit (200), a turning member (113), and a plate-like attachment plate. The substrate housing portion (100) contains a circuit substrate for outputting an image signal of an image to be displaced. The optical unit (200) generates an image based on the image signal outputted from the circuit substrate and projects the generated image. The combiner (400) is provided at one end of the optical unit, and the image is projected onto the combiner (400). The turning member (113) connects the optical unit to the substrate housing portion in a freely rotatable manner. The plate-like attachment plate is used to mount the substrate housing portion to a rear-view mirror such that the optical unit is freely rotatable without coming into contact with the rear-view mirror inside a vehicle.