Vehicle Lamp Light Guide Bump for Uniform Cutoff
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Solution Overview
Problem
Existing vehicle lamp structures require massive light sources and complex designs, leading to high manufacturing costs and inefficient light distribution, particularly in achieving the required cutoff line and uniform light patterns.
Innovation Solution
A vehicle lamp structure with a light guide featuring a bump and arc structure that concentrates high-beam light and uses fewer light-emitting elements, including a single first light-emitting element and a second light-emitting element, with strategically placed recesses and a reflective member to achieve uniform light distribution and an obvious cutoff line.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If massive light sources are disposed below the high-beam light guide, then the light distribution pattern gap between low-beam and high-beam is improved, but the installation becomes complicated and manufacturing costs increase
Solution Approach 1:
The patent combines high-beam and low-beam light sources into a single integrated lamp assembly, sharing common structural components including the light guide body, housing, and mounting features. This merging eliminates the need for separate installation procedures and reduces overall system complexity while maintaining compliant light distribution patterns for both beam types
2Reliability
If massive light sources are disposed below the high-beam light guide, then the light distribution pattern gap between low-beam and high-beam is improved, but manufacturing costs increase due to complex design and fabrication of two light-emitting surfaces
Solution Approach 1:
The patent employs a single light guide body that serves dual functions for both high-beam and low-beam light distribution, eliminating the need to manufacture two separate light-emitting surfaces. This consolidation significantly reduces manufacturing complexity and costs while ensuring regulatory compliance for both beam types through integrated optical design
3Ease of manufacture
If the light guide body extends forward with parallel sides, then the structure is simple, but the cutoff line is not obvious and light distribution is not uniform
Solution Approach 1:
The patent incorporates curved surfaces and angled extensions into the light guide body, replacing simple parallel-sided geometry. These curved features include the light guide bump with its curved top surface, the angled first and second extensions, and the overall contoured shape of the light guide body, which collectively create sharp cutoff lines and uniform light distribution patterns
4Ease of manufacture
If the light guide body extends forward with parallel sides, then the structure is simple, but light-emitting efficiency is not increased
Solution Approach 1:
The patent uses curved surfaces and strategic angular orientations of the light guide body to optimize light extraction and distribution efficiency. The curved top surface of the light guide bump and the angled extensions are specifically designed to direct light toward desired areas, maximizing the utilization of light from the LED sources and improving overall light-emitting efficiency
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 reduces material and manufacturing costs while enhancing light-emitting efficiency and achieving compliant light distribution patterns, including a clear cutoff line, thereby addressing the inefficiencies of prior art.
Implementation Method 1
After being reflected by the light guide bump, the first light ray travels forward and emits from the arc structure
Implementation Method 2
Then the first light ray is received by and transmitted through the optical member
Implementation Method 3
After being reflected by the reflective member, the second light ray travels downward and is received by and transmitted through the optical member
Data Source
AI summary
The invention provides a vehicle lamp structure, which includes a first substrate, a first light-emitting element, a light guide and an optical member. The first light-emitting element is disposed on the first substrate. The light guide includes a light guide body and a light guide bump. The light guide body has an arc structure facing forward. The light guide body extends backward to form the light guide bump. The first light-emitting element is arranged below the light guide bump. The optical member is arranged in front of the light guide. The first light-emitting element upwardly emits a first light ray into the light guide bumps. After being reflected by the light guide bumps, the first light ray travels forward and emits from the arc structure. The first light ray is then received by and transmitted through the optical member.