Vehicle Door Handle Illumination via Base-Mounted LED and Light Guide
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing door handle structures on vehicles face issues with LED lamps being hitched during manipulation, leading to imbalance and reduced illumination, making it difficult to locate the handle in dark environments.
Innovation Solution
A door handle structure with a LED lamp positioned at the handle base member and emitting light through a recess on the door panel, combined with a band member made of transparent or semitransparent synthetic resin to direct light towards the outside, ensuring consistent illumination and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the LED lamp is mounted on the handle grip unit surface, then the door handle visibility in dark is improved, but the LED lamp top end gets hitched during manipulation degrading operation quality
Solution Approach 1:
The LED lamp is extracted from the handle grip unit surface and repositioned to the handle base member. This separation removes the interfering top end of the LED lamp from the manipulation path of the handle grip unit, eliminating the hitching problem while preserving the illumination function through the door panel recess.
2Illumination intensity
If the LED lamp is mounted on the handle grip unit, then visibility is improved, but illumination balance deteriorates when the handle is pulled
Solution Approach 1:
The LED lamp is extracted from the movable handle grip unit and fixed to the stationary handle base member. This ensures the light source remains in a fixed position relative to the door panel recess, maintaining consistent illumination balance regardless of the handle grip unit's position during manipulation.
3Illumination intensity
If the LED lamp is positioned to illuminate the handle, then visibility is improved, but effulgence occurs degrading merchantability
Solution Approach 1:
A light guide member is introduced as an intermediary between the LED lamp and the door panel recess. This light guide member redirects and diffuses the light from the LED lamp, preventing direct effulgence while maintaining effective illumination of the door handle area for visibility.
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 solution maintains balanced illumination and enhances visibility of the door handle, preventing hitching issues and improving aesthetic quality by directing light effectively towards the handle grip, facilitating easier operation in dark conditions.
Implementation Method 1
a LED lamp installed at the handle base member and emitting a light source through a recess formed on the door panel
Implementation Method 2
a band member configured to receive the light source through the recess from the LED lamp and emit the light source towards the outside of the vehicle, wherein the band member is made of transparent or semitransparent synthetic resin
Data Source
AI summary
A door handle structure found on the outside of a vehicle may include a door handle including a handle base member installed to the inside of a door panel and a handle grip member coupled to the outside of the door panel, wherein a portion of the handle grip member is pivotally coupled to the handle base member, and a lighting device installed to the door panel, having at least a light emitting diode (LED) lamp which is installed at the handle base member and configured to emit a light source through a recess formed on the door panel, and a band member configured to receive the light source through the recess from the LED lamp and emit the light source towards the outside of the vehicle.