Beveled LED Ambient Light Bar for Wider TV Color Coverage
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Solution Overview
Problem
Conventional ambient light bars in televisions suffer from single color level and small coverage issues due to the use of ordinary LED lights.
Innovation Solution
An ambient light bar design incorporating beveled LED beads with different bevel angles and a lens assembly to expand light output range and enable multi-leveled colored lighting, achieved by arranging beveled LED beads with varying bevel angles and using lenses to shape light beams into specific spots for uniform mixing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional LED lights are used for ambient light, then the structure is simple, but the color level is single and coverage is small
Solution Approach 1:
The ambient light bar is divided into multiple independent light emitting units, each containing LEDs with different wavelengths (red, green, blue). Each unit can be controlled independently to emit different colors, enabling multi-level colored ambient light while maintaining a modular structure that doesn't overly complicate the overall design
Solution Approach 2:
Different segments of the ambient light bar are assigned different color characteristics. Each light emitting unit has its own specific color properties (red, green, blue), creating local quality variations along the light bar. This allows the system to display diverse colors and patterns while keeping each individual unit relatively simple
2Area of stationary object
If conventional LED lights are used for ambient light, then the design is simple, but the coverage area is small
Solution Approach 1:
The patent introduces a vertical dimension to light emission by tilting the LED beads at specific angles (e.g., 45 degrees) relative to the light bar axis. This angular arrangement causes light to emit not only horizontally but also vertically, expanding the coverage area in three-dimensional space without significantly increasing the physical size of the light bar structure
Solution Approach 2:
Multiple light emitting units with different color wavelengths are nested within a single integrated light bar structure. Each unit contains its own set of LEDs arranged at specific angles, and these units are combined within the same housing, allowing expanded coverage while maintaining a compact overall design
3Illumination intensity
If LEDs with different bevel angles are arranged, then light output uniformity is improved, but manufacturing complexity increases
Solution Approach 1:
The patent systematically varies the bevel angle parameter of LED beads across different positions in the light bar. By establishing a gradient or specific pattern of angle changes (e.g., alternating between 30 and 60 degrees), the design achieves uniform light output distribution. This parameter variation is incorporated into the manufacturing process through standardized angle specifications that can be replicated
Solution Approach 2:
The optimal bevel angle configuration is determined and fixed during the design phase through optical simulations and calculations. This preliminary determination of angle parameters allows manufacturers to follow standardized assembly procedures, reducing the complexity of actual manufacturing while achieving the desired uniform light output
4Illumination intensity
If lens assembly is added to shape light beams, then light distribution is improved, but device complexity increases
Solution Approach 1:
The lens assembly performs multiple functions simultaneously: it focuses light from individual LEDs, shapes the light beam pattern, and contributes to the overall aesthetic design of the light bar. By combining these functions into a single integrated optical component, the patent improves light distribution without proportionally increasing device complexity
Solution Approach 2:
The lens assembly is integrated with the light emitting units and PCB structure, merging the optical shaping function with the structural support and electrical connection components. This consolidation reduces the number of separate parts and simplifies assembly, allowing improved light distribution while controlling overall device complexity
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 light output uniformity and color control, reducing mixed light crosstalk and dark areas, providing a more immersive viewing experience.
Implementation Method 1
a lens assembly. Each of the at least one beveled LED bead group includes at least two beveled LED beads... The lens assembly is covered above a light output side of the beveled LED bead group
Data Source
AI summary
An ambient light bar includes: a printed circuit board (PCB) board; at least one beveled light emitting diode (LED) bead group and a lens assembly. The beveled LED bead group includes at least two beveled LED beads, and the at least two beveled LED beads are fixed on the PCB board according to a preset arrangement. A bevel angle is formed between a chip mounting face and a welding plane of each of the beveled LED beads, and the bevel angles of the at least two beveled LED beads are different. The lens assembly is covered above a light output side of the beveled LED bead group and is fixed on the PCB board.