Vehicle Lamp Light Guide with Multidirectional Optic Surfaces
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Solution Overview
Problem
Existing vehicle lamp structures face challenges in providing multidirectional lighting with uniform brightness, especially with the complexity of wiring and assembly for LED light sources, and the need for a simple fastening structure that ensures sufficient light distribution.
Innovation Solution
A vehicle lamp structure featuring a housing with a lamp assembly that includes a bezel, a light diffusion unit with multiple surfaces, a light guide with optic surfaces for reflecting light, and a cover unit to create multiple lighting regions, allowing light to be uniformly distributed in a multidirectional manner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single optic surface is used for one-direction lighting, then the structure is simple, but the lighting region is limited to one direction
Solution Approach 1:
The single optic surface is divided into multiple optic surfaces (first optic surface and second optic surface) that are inclined at different angles. Each optic surface directs light to different regions, enabling multidirectional lighting while maintaining a relatively simple overall structure.
Solution Approach 2:
The optic surfaces are arranged in different spatial orientations and inclined angles relative to the light source. This three-dimensional arrangement of multiple surfaces allows light to be distributed in multiple directions simultaneously, transforming a one-dimensional lighting approach into a multidimensional lighting solution.
2Illumination intensity
If multiple LED light sources are provided, then sufficient light amount is achieved, but wiring and assembly become complicated
Solution Approach 1:
Multiple LED light sources are integrated into a single lamp assembly unit that shares common wiring and mounting structure. The first and second light sources are positioned at different locations but connected through a unified electrical connection system, reducing the overall wiring complexity compared to completely separate lighting units.
Solution Approach 2:
The lamp assembly is designed as a multi-functional unit that simultaneously provides lighting through multiple LED sources and integrates various optical components (multiple optic surfaces, light diffusion unit) into a single assembly. This universal design allows one structure to perform multiple lighting functions.
3Ease of manufacture
If light is introduced through LED light source in longitudinal direction, then assembly is simplified, but sufficient light distribution in all directions is difficult to achieve
Solution Approach 1:
The light diffusion unit is configured with a curved or rounded shape that surrounds the light source from multiple angles. This curved structure enables light introduced in the longitudinal direction to be diffused and distributed uniformly in multiple directions, achieving omnidirectional light coverage while maintaining simple assembly.
Solution Approach 2:
Different portions of the light diffusion unit have different optical properties and geometries optimized for specific light distribution needs. The diffusion unit is positioned and shaped to redirect light from the longitudinal introduction direction toward various lateral directions, creating locally optimized light distribution zones.
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 enhances vehicle driving safety and signal visibility by providing a complex lighting region with uniform brightness, simplifying the assembly and ensuring sufficient light distribution across multiple directions.
Implementation Method 1
a light guide (400) configured to guide light irradiated by the light irradiation unit (600) so as to be introduced in a longitudinal direction of the housing (100)
Implementation Method 2
a light diffusion unit (300) configured to wrap the outer surface of the light guide (400) and to diffuse light introduced from the light guide (400)
Data Source
AI summary
A vehicle lamp structure includes a housing located at the side of a vehicle and a lamp assembly located inside the housing. The lamp assembly includes a bezel fixed to the housing and a light diffusion unit located at the bezel. The light diffusion unit includes at least two surfaces and a light guide located inside the light diffusion unit. The light guide includes at least two optic surfaces configured to reflect light introduced thereinto. The lamp assembly also includes a light irradiation unit fastened to the light guide and being configured to irradiate light along the light guide.