LED Filament Bending Unit for Shape Control
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Solution Overview
Problem
Existing LED filament arrangements face challenges in maintaining reliability and uniform light distribution due to bending and stress issues, which can lead to electrical connection damage and non-uniform light emission.
Innovation Solution
A LED filament arrangement that incorporates an elongated, flexible LED filament with a bending unit featuring a partially curved channel to induce bends in the filament, thereby maintaining its intended shape and enhancing light distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If longer flexible filaments are used to produce various configurations, then adaptability is improved, but reliability deteriorates due to bending stress and susceptibility to damage
Solution Approach 1:
The bending unit is pre-formed with a specific curvature that induces a predetermined bend in the LED filament. This preliminary shaping action eliminates the need for post-assembly bending operations, preventing damage to electrical connections and the encapsulant while achieving the desired decorative configuration.
Solution Approach 2:
The bending unit acts as an intermediary component between the rigid LED filament and the desired curved configuration. By providing a pre-formed curved channel, it mediates the transition from straight to bent shape without subjecting the filament to damaging bending stresses during assembly or operation.
2Adaptability or versatility
If multiple bending operations are performed on LED filaments, then shape adaptability is improved, but reliability deteriorates due to damage to electrical connections and encapsulant
Solution Approach 1:
The bending unit is pre-formed with a specific curvature that induces a predetermined bend in the LED filament. This preliminary shaping action eliminates the need for post-assembly bending operations, preventing damage to electrical connections and the encapsulant while achieving the desired decorative configuration.
3Shape
If LED filaments are bent too much or bent and straightened repeatedly, then decorative appearance is improved, but reliability deteriorates due to encapsulant peeling and non-uniform light distribution
Solution Approach 1:
The bending unit is pre-formed with a specific curvature that induces a predetermined bend in the LED filament. This preliminary shaping action eliminates the need for post-assembly bending operations, preventing damage to electrical connections and the encapsulant while achieving the desired decorative configuration.
Solution Approach 2:
The bending unit acts as an intermediary component between the rigid LED filament and the desired curved configuration. By providing a pre-formed curved channel, it mediates the transition from straight to bent shape without subjecting the filament to damaging bending stresses during assembly or operation.
Data Source
Figure 1~2
Figure 3A~3B
Figure 4A~4B
AI summary
The present disclosure relates to a light emitting diode, LED, filament arrangement (100) which comprises an elongated, flexible LED filament (110) having a plurality of LEDs arranged along the elongation of the filament. The arrangement further comprises a bending unit (120) having a body in which a channel (121) is formed. A portion of the LED filament is arranged within the channel of the bending unit, and the bending unit is at least partially curved and adapted to induce a bend in the LED filament. Figure elected for publication: