Automobile Display Anchor Structure for Thin Light-Shielding Resin
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Solution Overview
Problem
In automobile display devices, forming a thin non-transmitting member to minimize luminance reduction while preventing peeling off from a light-transmitting resin member is challenging, as thinner members are prone to peeling and thicker ones cause luminance loss due to reflection and absorption.
Innovation Solution
The use of a light-transmitting resin member with through holes at non-display areas, filled with a non-light-transmitting resin to form an anchor structure, allowing for a thin non-transmitting member that exposes the display portion without peeling, and maintaining sufficient thickness to prevent deformation and luminance reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the thickness of the non-transmitting member is reduced to suppress luminance reduction, then luminance is improved, but the non-transmitting member may peel off from the transmitting member
Solution Approach 1:
The non-transmitting member is extended from a single-plane configuration into a three-dimensional anchor structure that penetrates through holes in the transmitting member, transitioning from a two-dimensional surface attachment to a multi-dimensional embedded structure that provides mechanical interlocking and prevents peeling
Solution Approach 2:
The non-transmitting member is inserted into through holes of the transmitting member, creating a nested configuration where one component is embedded within another, forming an integrated anchor structure that prevents separation while maintaining thin overall profile
2Reliability
If the thickness of the non-transmitting member is increased to prevent peeling, then reliability is improved, but luminance reduction increases due to reflection and absorption
Solution Approach 1:
Instead of increasing thickness in the vertical direction, the solution extends the non-transmitting member horizontally into the through holes, providing peeling resistance through lateral embedding rather than vertical thickness, thereby maintaining thin profile while ensuring reliable attachment
Solution Approach 2:
The non-transmitting member is divided into multiple segments: a first portion extending in a first direction and a second portion extending in a second direction, creating a multi-directional anchor structure that provides comprehensive peeling resistance without requiring increased overall thickness
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 approach effectively suppresses peeling of the non-transmitting member while maintaining display quality by forming a thin non-transmitting member that prevents deformation and luminance reduction, allowing for precise and efficient illumination of characters and symbols.
Implementation Method 1
the non-transmitting member has a so-called anchor structure with respect to the transmitting member
Implementation Method 2
a display portion emitting light by transmitting the light that has been irradiated to the irradiated portion
Implementation Method 3
the thicker the thickness of the non-transmitting member that exposes the display portion is, the more the proportion of transmitted light that is reflected and absorbed by a wall face along a thickness direction of the non-transmitting member increases
Data Source
AI summary
There is provided an automobile display device including: a transmitting member that is made of a light-transmitting resin, that includes, at a rear face side thereof, an irradiated portion to which light from a light source is irradiated, and that includes, at a front face side thereof, a display portion emitting light by transmitting the light that has been irradiated to the irradiated portion, plural through holes being formed at portions of the transmitting member excluding the display portion during primary molding of two-color molding; and a non-transmitting member that is made of a non-light-transmitting resin, that is filled into the through holes and provided at the front face side and the rear face side of the transmitting member during secondary molding of the two-color molding, and that exposes the irradiated portion and the display portion.