Light Emitting Emblem Reducing Thickness via Inclined Reflection
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Solution Overview
Problem
Existing light emitting emblems for vehicles suffer from increased depth dimension, which compromises their design properties due to the extension direction of LED boards coinciding with the thickness direction, leading to non-uniform light emission and aesthetic issues.
Innovation Solution
A light emitting emblem design featuring a light guide plate with a light entering part and an inclination part that reflects light inwardly, combined with a shielding plate to prevent light leakage and reduce thickness, allowing for uniform light emission while maintaining a thin profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the LED board extension direction coincides with the thickness direction of the emblem, then the light source can be efficiently positioned, but the depth dimension (thickness) of the emblem is increased, deteriorating design properties
Solution Approach 1:
The patent changes the orientation of the LED board from the thickness direction (depth) to the planar direction (width/length) of the emblem. This dimensional reorientation allows the LED board to extend along the first peripheral edge rather than penetrating into the thickness direction, thereby reducing emblem thickness while maintaining efficient light source positioning and optical coupling with the light guide plate.
2Illumination intensity
If the protruding height of the light incident part from the light guide plate is increased to improve light entry, then the depth dimension of the emblem is increased, deteriorating design properties
Solution Approach 1:
The patent modifies the geometric parameters of the light incident part by forming it as a recessed region within the light guide plate rather than a protruding structure. This parameter change allows light to enter the light guide plate from the side through the recessed portion, achieving efficient light coupling without increasing the emblem's thickness dimension.
3Manufacturing precision
If the LED board is positioned to maximize light emission uniformity, then the thickness direction is utilized, but the emblem depth dimension is increased
Solution Approach 1:
The patent achieves uniform light emission by repositioning the LED board in the planar dimension rather than utilizing the thickness dimension. The LED board is arranged along the first peripheral edge with its extension direction parallel to this edge, enabling uniform light distribution through the light guide plate's optical design without compromising emblem 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
The design achieves high uniformity in light emission while minimizing the thickness of the light emitting emblem, enhancing its design properties and enabling installation in vehicles with limited space.
Implementation Method 1
the second surface including an inclination part through which the light incident into the light entering part is reflected to the inner side portion from the second peripheral edge
Implementation Method 2
a shielding plate that shields the light from the light source and prevents light not incident from the light entering part from being incident into the inner side portion
Data Source
AI summary
A light emitting emblem includes: a board; a light source arranged at the board; a light guide plate having a second peripheral edge and an inner side portion, the second peripheral edge having a first surface facing the light source and a second surface opposite to the first surface, the first surface including a light entering part into which light from the light source is incident, and the second surface including an inclination part through which the light incident into the light entering part is reflected to the inner side portion from the second peripheral edge; and a shielding plate that shields the light from the light source and prevents light not incident from the light entering part from being incident into the inner side portion, wherein the inclination part is positioned at an outer edge of the light emitting emblem from the shielding plate.