Head-Up Display Mirror Assembly for Accurate Fixed Mirror Positioning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing head-up display devices suffer from errors in the attachment position of the plane mirror due to multiple interposed members, which affect the display quality, particularly when using concave mirrors.
Innovation Solution
A head-up display device with a fixed mirror supported by a rotating mirror and a mirror support unit, integrated with a holding case unit, and secured by plate springs to prevent positional errors, utilizing an integral body configuration without additional fixing means.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If multiple members are interposed between the plane mirror and the lower member of the housing for support and fixation, then the structural stability is improved, but the attachment position accuracy deteriorates due to cumulative errors
Solution Approach 1:
The patent merges multiple separate members (holder and internal member of housing) into a single integrated lower member structure. The plane mirror is now directly supported by this integrated lower member without intermediate components, eliminating cumulative positioning errors while maintaining structural stability through the unified design.
2Reliability
If multiple members and fixing mechanisms are used to secure the plane mirror, then the reliability of fixation is improved, but the device complexity increases
Solution Approach 1:
The holder and internal member of the housing are merged into a single integrated lower member, reducing the total component count while maintaining reliable fixation of the plane mirror through the simplified direct support structure.
Solution Approach 2:
The patent extracts and eliminates unnecessary intermediate members from the original multi-component fixation system, retaining only the essential direct support function provided by the integrated lower member, thereby simplifying the overall device structure.
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 stabilizes the attachment of the fixed mirror, preventing errors and maintaining display quality while reducing component count and allowing for a more compact design.
Implementation Method 1
a spring that fixes the fixed mirror to the mirror support unit by pressing the fixed mirror toward the mirror support unit
Implementation Method 2
a fixed mirror that reflects the display light from the display
Implementation Method 3
a rotating mirror that is provided rotatably about a rotation axis and reflects, toward a projection-receiving member, the display light reflected by the fixed mirror
Data Source
AI summary
A head-up display device is provided which can suppress error in the attachment position of a fixed mirror. This head-up display device is provided with a display which emits display light, a first mirror which reflects display light from the display, a second mirror which is provided rotatably about a rotation axis and which reflects towards a window shield the display light reflected by the first mirror, a mirror support unit which supports the first mirror, a holding case unit which holds the second mirror and which is formed integrally with the mirror support unit, and plate springs which fix the first mirror to the mirror support unit by pressing the first mirror towards the mirror support unit.