LED Vehicle Lamp With Truncated-Cone Light Guidance for Uniform Emission
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Solution Overview
Problem
Existing LED vehicle lamps suffer from uneven light emission, dark spots, and large light point sizes with high intensity at the center and varying intensity around the light point, failing to match the uniformity and efficiency of halogen lamps.
Innovation Solution
The LED vehicle lamp employs a truncated cone structure with a specific inclination for the light guide column, combined with electroplated areas to ensure total reflection and nearly horizontal light emission, and a recessed conical surface for uniform light distribution, using a shell and electroplated parts to enhance light redistribution and reduce process complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If LED chips are used for vehicle lighting, then energy efficiency and service life are improved, but light distribution uniformity deteriorates
Solution Approach 1:
The LED chip array is divided into multiple independently controllable groups (first LED chip array and second LED chip array) with different lighting control modes. The first array provides continuous lighting while the second array provides intermittent lighting, allowing optimization of both energy efficiency and light distribution uniformity through selective activation of different segments.
Solution Approach 2:
The lighting system implements dynamic control by switching between different lighting modes (continuous lighting, intermittent lighting, sequential lighting) based on driving conditions. This dynamic adjustment allows the system to maintain energy efficiency while achieving uniform light distribution across different operational scenarios.
2Duration of action of stationary object
If LED chips are used for vehicle lighting, then service life is improved, but light emission uniformity deteriorates
Solution Approach 1:
The LED chip array is segmented into multiple independently controllable groups with different lighting control modes. By selectively activating different segments based on driving conditions, the system maintains uniform light emission while extending service life through reduced overall operation time.
Solution Approach 2:
The lighting system employs periodic intermittent lighting modes where LED chips are activated in cycles rather than continuously. This periodic action reduces cumulative operating hours (extending service life) while maintaining perceived light uniformity through strategic timing of illumination cycles.
3Speed
If LED chips are used for vehicle lighting, then instant lighting is achieved, but light spot uniformity deteriorates
Solution Approach 1:
The LED chip array is divided into multiple segments that can be activated in different sequences and patterns. This segmentation allows the system to achieve instant lighting response by selectively activating specific segments while maintaining uniform light distribution through coordinated activation of multiple groups.
Solution Approach 2:
The lighting system dynamically adjusts which LED segments are activated and in what sequence, allowing instant response to lighting needs while distributing light uniformly across the road surface through coordinated control of multiple LED chip arrays.
4Device complexity
If LED vehicle lamps emit light from two sides, then device complexity is reduced, but light distribution uniformity deteriorates
Solution Approach 1:
The lighting system is segmented into multiple LED chip arrays arranged in specific patterns (first and second arrays with different orientations). This segmentation enables uniform 360-degree light distribution while maintaining relatively simple individual lamp module structures, balancing complexity and performance.
Solution Approach 2:
The LED chip arrays are arranged asymmetrically with different orientations and activation patterns. The first LED chip array has a different orientation than the second array, creating asymmetric light emission patterns that collectively achieve uniform omnidirectional illumination without requiring complex symmetric structures from multiple lamps.
5Illumination intensity
If LED vehicle lamps emit light from four sides, then light distribution uniformity is improved, but device complexity increases
Solution Approach 1:
The lighting system achieves four-sided light emission by segmenting LED chips into multiple arrays with different orientations. Each array emits light in specific directions, and their coordinated activation creates uniform omnidirectional illumination without requiring four separate complex lamp structures.
Solution Approach 2:
The LED lamp assembly is designed with multi-functionality, where a single integrated structure performs the function of multiple separate lamps by using differently oriented LED chip arrays that can be activated in various combinations to achieve uniform light distribution in all directions.
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 achieves uniform light emission without dark spots, improves light distribution efficiency, and reduces the lamp size, matching the performance of halogen lamps while maintaining cost-effectiveness and ease of production.
Implementation Method 1
The provision of the first electroplated area not only ensures the total reflection of the light
Implementation Method 2
A light emitting diode (LED) vehicle lamp has the characteristics of low voltage, long service life, instant lighting and neutral light emission
Data Source
AI summary
An LED vehicle lamp with uniform light emission includes a substrate, wherein at least one LED chip is arranged on the substrate, a light guide column is arranged on one side of a light emitting surface of the LED chip, a surface of one end of the light guide column far away from the LED chip is a recessed conical surface, and the recessed conical surface is recessed towards the LED chip; one end of the light guide column far away from the LED chip is a first end in a truncated cone shape, only a part of the first end of the light guide column is provided with a first electroplated area, the first electroplated area is arranged close to the LED chip, and the recessed conical surface is provided with a second electroplated area.