Door Handle Lamp Unit with Segmented Light Guide
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Solution Overview
Problem
Existing door handle lighting systems face challenges in achieving high strength and positional accuracy when incorporating multiple light components, leading to potential deformation and reduced illumination effectiveness.
Innovation Solution
A door handle design featuring a lamp unit with separate combination members and a light guide, including a light guiding lens that directs light emissions in specific directions, and a cover portion to prevent rainwater and dirt adhesion, ensuring high strength and positional accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a structure including two light components is provided in the door handle to achieve both spot illumination and extended illumination, then the illumination functionality is improved, but the door handle may be deflected and the light components may not maintain high positional accuracy when operating force is applied
Solution Approach 1:
The door handle is divided into multiple independent parts: a handle body, a first light component mounted on the handle body, and a second light component mounted on a support plate that is separately supported in the accommodation space. This segmentation allows each light component to be positioned and fixed independently, maintaining high positional accuracy even when the door handle is operated and deflected.
2Adaptability or versatility
If two light components are provided in the door handle to achieve both spot illumination and extended illumination, then the illumination versatility is improved, but the structure becomes more complex
Solution Approach 1:
The support plate serves multiple functions simultaneously: it supports the second light component, provides a mounting surface for the light component, and is itself supported by the accommodation space in the door handle. By merging these functions into a single structural element, the design achieves illumination versatility without excessive structural complexity.
3Adaptability or versatility
If the door handle structure includes multiple light components for dual illumination patterns, then the illumination effectiveness is improved, but the strength of individual light components may be reduced
Solution Approach 1:
By separating the two light components into different mounting locations (one on the handle body, another on a separately supported plate), each light component can be designed and manufactured with adequate strength without requiring the entire assembly to be overly robust. The segmentation distributes mechanical stresses away from individual light components.
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 strength and positional accuracy for the light components, reducing the likelihood of deformation and ensuring effective illumination, while preventing adhesion issues without additional covering members.
Implementation Method 1
a light guiding lens that guides light emitted from the light emission element in a first predetermined direction and emits the guided light from an emission surface
Implementation Method 2
a light guide that includes a light entrance surface facing at least a portion of the emission surface and guides the light entering the light guide through the light entrance surface in a second predetermined direction
Data Source
AI summary
A door handle includes a casing inside which an accommodation space is provided, and a lamp unit disposed in the accommodation space. The lamp unit includes: a light emission element; a circuit board on which the light emission element is mounted; a combination member including a housing that supports the circuit board, and a light guiding lens that guides light emitted from the light emission element in a first predetermined direction and emits the guided light from an emission surface; and a light guide that includes a light entrance surface facing at least a portion of the emission surface and guides the light entering the light guide through the light entrance surface in a second predetermined direction.