Branched LED Filament Arrangement for Light Distribution
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Solution Overview
Problem
Existing LED filament lamps lack efficiency, dynamics, and decorative effects compared to incandescent bulbs, despite offering the advantages of LEDs.
Innovation Solution
A LED filament arrangement featuring elongated LED filaments with bifurcations that split into multiple branches, forming complex structures such as tree-like patterns, to enhance light distribution and decorative effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional linear LED filament arrangements are used, then the structure is simple and easy to manufacture, but the light distribution efficiency and decorative effects are insufficient
Solution Approach 1:
The LED filament is divided into multiple independent branches extending from a central axis, with LEDs distributed across these branches. This segmentation allows light to be emitted from multiple spatial locations simultaneously, improving light distribution efficiency while maintaining manufacturing simplicity through modular assembly
Solution Approach 2:
The filament structure transitions from a single linear arrangement to a three-dimensional branched configuration. LEDs are positioned at various heights and radial distances along the branches, creating spatial distribution that enhances light coverage and decorative effects without significantly complicating the manufacturing process
2Productivity
If branched LED filament structures are implemented, then light distribution efficiency and decorative effects are improved, but the device complexity increases
Solution Approach 1:
The complex branched structure is divided into multiple identical or similar branch modules, each containing a subset of LEDs. This modular segmentation allows the complexity to be managed through repetition of standardized components, improving light distribution while controlling device complexity through modular design
Solution Approach 2:
Multiple branch structures are combined into a single integrated filament assembly that functions as one cohesive lighting element. The branches share common mounting features and electrical connections, reducing overall device complexity despite the increased structural complexity compared to linear filaments
3Ease of manufacture
If LEDs are arranged in a linear array on an elongated carrier, then the manufacturing process is simple, but the dynamics and decorative aspects are limited
Solution Approach 1:
The LED arrangement extends from a two-dimensional linear array on the carrier surface into a three-dimensional spatial configuration with branches extending in multiple directions and at various heights. This dimensional transition creates diverse decorative effects while maintaining manufacturing simplicity through the use of a pre-formed elongated carrier structure
4Ease of manufacture
If the LED filament is arranged in a straight configuration, then the structure is simple and manufacturing is easier, but the light distribution and dynamics are insufficient
Solution Approach 1:
The straight filament structure is segmented into multiple branches that extend in different directions from the central axis. This segmentation distributes light emission across a larger spatial volume, improving light distribution efficiency while maintaining structural simplicity through the use of a central support axis and radiating branches
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 branched LED filament arrangement improves light distribution efficiency, dynamics, and decorative aspects, achieving a more even and aesthetically pleasing lighting effect while mimicking conventional lamp filaments.
Implementation Method 1
The luminescent material may be a phosphor such as an inorganic phosphor and/or quantum dots or rods
Data Source
AI summary
A light emitting diode, LED, filament arrangement (100), comprising at least one LED filament (110) comprising an array of a plurality of light emitting diodes, LEDs. The at least one LED filament (110) is of an elongated shape, and is at least partially extending along an axis, A. The at least one LED filament comprises at least one branch (120,121) extending from the elongated LED filament (110) and is arranged at an angle, α, to the axis A.