Telescoping Visor Sunshield for Rearview Mirror Glare Gaps
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Solution Overview
Problem
Existing passenger vehicle visors are inadequate in blocking glare and sunlight from certain directions, particularly around the rearview mirror, leading to vision impairment for drivers and passengers.
Innovation Solution
A front seat sunshield with an elongate case attachable to a visor and telescoping extensions that can be selectively expanded to block glare proximate to the visor's distal edge, providing customizable glare blockage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the visor is spaced away from the rear view mirror to avoid obscuring it, then the rear view mirror visibility is maintained, but spaces around the rear view mirror allow sunlight to distract the driver
Solution Approach 1:
The sunshield device is divided into a fixed portion (elongate case) and a movable portion (telescoping extensions). The fixed case attaches to the visor distal edge while the telescoping extensions can be independently extended or retracted to block sunlight in different positions without affecting the entire visor's positioning relative to the rearview mirror.
Solution Approach 2:
The telescoping extensions provide dynamic adjustability, allowing the sunshield to change its effective position and coverage area by extending or retracting the movable portions. This enables the sunshield to adapt to different sunlight angles and positions while the visor itself remains fixed in its optimal position for rearview mirror visibility.
2Illumination intensity
If the visor is made larger to block more sunlight, then glare blockage improves, but the visor may obscure the rear view mirror
Solution Approach 1:
The sunshield device segments the glare-blocking function into a compact fixed case and extendable movable portions. This allows the system to provide large-area glare blockage when needed (by extending the telescoping sections) while maintaining a small footprint when retracted, avoiding obstruction of the rearview mirror.
Solution Approach 2:
The telescoping extensions enable the sunshield to dynamically adjust its effective area. When sunlight requires blocking, the extensions are deployed to increase the blocking surface area. When not needed, they are retracted, maintaining a compact profile that does not interfere with the rearview mirror visibility.
3Adaptability or versatility
If a fixed sunshield is attached to the visor, then installation is simple, but the sunshield cannot be adjusted to block glare from different directions
Solution Approach 1:
The telescoping extensions provide mechanical adjustability through extension and retraction mechanisms. This allows the sunshield to adapt to different glare directions and intensities by changing its effective length and position, while the overall structure remains relatively simple with straightforward mechanical components.
Solution Approach 2:
The telescoping extensions add a dimensional aspect to the sunshield structure, allowing adjustment along the length of the extensions. This provides adaptability in blocking glare from different angles and positions without requiring complex multi-axis adjustment mechanisms, maintaining structural simplicity while enhancing versatility.
Data Source
AI summary
A front seat sunshield is an accessory device that includes an elongate case positionable on a distal edge of a visor of a passenger vehicle. An engagement mechanism of the front seat sunshield is attached to the elongate case and is selectably engagable to the visor. One or more telescoping extensions attached to the elongate case and selectably expandable outward from the elongate case to block glare proximate to the distal edge of the visor.