Flexible Four-Band LED Layout for Uniform Color Mixing
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Solution Overview
Problem
Existing flexible LED light strips face challenges in optimizing cost, maintaining aesthetic appeal, and achieving uniform illumination while integrating advanced functionalities such as smart lighting controls and adaptive color tuning.
Innovation Solution
A lighting apparatus with a flexible substrate featuring multiple types of LED modules (red, green, blue, and yellow-green) arranged in a staggered configuration, controlled by a driver to adjust driving currents for mixed optical parameters, and enhanced with a diffusion layer and heat sink modules for uniform light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If flexible LED strips are used to replace traditional bulbs, then energy efficiency and lifespan are improved, but achieving uniform illumination and classic aesthetic appearance becomes more difficult
Solution Approach 1:
The LED strip is divided into multiple segments with different types of LEDs (warm white, cool white, RGB) arranged in alternating patterns. This segmentation allows each segment to contribute differently to the overall light output, creating a more uniform illumination pattern that mimics traditional bulb characteristics while maintaining LED energy efficiency.
Solution Approach 2:
Different regions of the LED strip are assigned different optical characteristics. Warm white LEDs are positioned in regions requiring softer illumination, while cool white LEDs are placed in regions needing brighter light. This local quality differentiation achieves uniform overall illumination while preserving the energy-efficient LED technology.
2Adaptability or versatility
If multiple types of LED modules are integrated for adaptive color tuning, then lighting versatility and functionality are improved, but device complexity and manufacturing cost increase
Solution Approach 1:
Multiple LED types (warm white, cool white, RGB) are merged into a single integrated strip structure. The driver circuit combines control signals for all LED types, and the power supply unit provides unified power distribution. This merging approach achieves adaptive color tuning functionality while minimizing the increase in device complexity through shared structural elements.
Solution Approach 2:
The LED strip is designed with multi-functionality, where the same physical structure supports multiple LED types and control modes. The driver circuit can selectively activate different LED combinations to achieve various lighting effects (warm white, cool white, RGB colors, tunable white), making the device universally applicable for different lighting scenarios without requiring separate structures for each function.
3Illumination intensity
If LEDs are arranged in a staggered configuration for better light mixing, then illumination uniformity is improved, but manufacturing precision requirements increase
Solution Approach 1:
The LED modules are arranged in an asymmetric staggered pattern rather than a simple linear or grid configuration. This asymmetric arrangement creates overlapping light patterns that enhance mixing and uniformity. The staggered positioning, while requiring precision, is optimized to maximize light interaction benefits while remaining feasible with standard manufacturing tolerances through careful design of the attachment structures.
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 cost-effective, aesthetically pleasing, and functionally advanced lighting solutions with improved light uniformity, adaptability, and energy efficiency, suitable for various applications including decorative and smart lighting.
Implementation Method 1
a plurality of first-type LED modules (607), a plurality of second-type LED modules (608), a plurality of third-type LED modules (609), and a plurality of fourth-type LED modules (610
Implementation Method 2
enhanced with a diffusion layer and heat sink modules for uniform light distribution
Data Source
AI summary
A lighting device includes a flexible substrate, four types of LED modules, and a driver. The substrate has an elongated area divided into four bands along the Y-axis. First-type LEDs are placed on the first band in a row along the X-axis, parallel to the substrate's length. Second-, third-, and fourth-type LEDs are placed on the second, third, and fourth bands, respectively. Each type emits light with different optical properties. The Y-axis is perpendicular to the X-axis, with first-type LEDs aligned with fourth-type LEDs and second-type LEDs aligned with third-type LEDs. First-type LEDs are offset from second-type LEDs along the X-axis. The driver converts external power into four currents, adjusting their relative ratios to control the combined optical output.