Vehicular Display Optical Mounting Without Fixing Clearance
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Solution Overview
Problem
Existing vehicular display devices require additional space for fixing optical components due to the need for clearance, leading to increased size and potential contamination or scratching during installation.
Innovation Solution
A vehicular display device design that includes a first optical component accommodated in a space within a first case, pressed against a second case, eliminating the need for installation clearance and using an elastic member to secure the optical component, while also incorporating a light shielding wall to prevent external light interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If clipping is adopted to fix the plane mirror, then the optical component can be securely fixed, but the device size increases due to required clearance for fixing components
Solution Approach 1:
The patent merges the fixing function into the case structure itself. The case has a mirror accommodation space with a bottom surface that directly contacts and fixes the plane mirror, eliminating the need for separate fixing components and their associated clearances. This integration reduces device volume while maintaining fixing reliability.
Solution Approach 2:
The plane mirror is nested within the mirror accommodation space of the case. The mirror is positioned and fixed within this dedicated space, allowing compact arrangement without requiring additional fixing components outside the case structure, thereby reducing overall device size.
2Ease of operation
If clearance space is provided for fixing components, then installation is easier, but the optical component is more susceptible to contamination and scratches
Solution Approach 1:
The case structure integrates both the accommodation function and the fixing function. The bottom surface of the mirror accommodation space serves as both the support and fixing surface for the plane mirror, eliminating the need for separate fixing components that would expose the optical component to contamination and scratches during installation.
Solution Approach 2:
The case structure is designed in advance to provide a built-in fixing surface that prevents the need for additional fixing operations. By having the bottom surface of the accommodation space directly fix the mirror, the design preemptively prevents contamination and scratches that would occur during separate fixing operations.
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
Reduces the overall size of the display device, prevents contamination and scratching of optical components, and enhances rigidity and vibration resistance by securing the optical components and shielding external light.
Implementation Method 1
a first optical component configured to reflect the display light emitted from the display unit
Data Source
AI summary
There is provided a vehicular display device including: a display unit configured to emit a display image including display light and projected onto a projection target member provided in a vehicle; a first optical component configured to reflect the display light emitted from the display unit; a first case having a space configured to accommodate the first optical component; and a second case configured to press the first optical component accommodated in the space against the first case.