Angled LED Filament Mesh for Dynamic Shadow Lighting
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Solution Overview
Problem
Existing LED filament lamps struggle to provide dynamic shadowing and decorative lighting effectively.
Innovation Solution
A luminaire with a LED filament arrangement comprising multiple LED filaments arranged at angles greater than 10 degrees to each other, enclosed by a frame with opaque elements, and controlled by a unit to vary light output, producing decorative light and dynamic shadows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If LED filaments are arranged in a conventional parallel or uniform configuration, then the device structure is simple, but the dynamic shadowing effect is insufficient
Solution Approach 1:
The patent applies asymmetry by arranging LED filaments at different angles (first angle and second angle) relative to the frame, where the absolute values of these angles are different. This asymmetric arrangement creates varied shadow patterns and dynamic visual effects that cannot be achieved with uniform parallel arrangements, directly resolving the contradiction between structural simplicity and dynamic shadowing capability.
Solution Approach 2:
The patent transitions from a conventional two-dimensional planar arrangement of LED filaments to a three-dimensional spatial configuration where filaments are positioned at different angles and orientations within the frame. This dimensional change enables dynamic shadowing effects by creating depth and varied light blocking patterns, resolving the contradiction between simple structure and effective dynamic shadowing.
2Illumination intensity
If LED filaments are arranged to provide decorative light, then the aesthetic appearance is improved, but the dynamic shadowing capability is insufficient
Solution Approach 1:
The patent segments the LED filament system into multiple independently controllable filaments, each positioned at specific angles relative to the frame. This segmentation allows individual filaments to be controlled to create dynamic shadowing patterns, transforming a static decorative light source into a dynamic shadow-casting system without requiring complex manufacturing processes.
Solution Approach 2:
The patent introduces dynamics by enabling independent control of each LED filament's operation. This allows the system to dynamically adjust which filaments are active and at what intensity, creating time-varying shadow patterns that enhance the dynamic shadowing capability while maintaining ease of manufacture through standard LED control electronics.
3Adaptability or versatility
If multiple LED filaments are arranged at different angles, then dynamic shadowing is achieved, but the device structure becomes more complex
Solution Approach 1:
The patent applies universality by designing the frame structure to simultaneously serve multiple functions: providing mechanical support for LED filaments, defining the geometric angles for optimal shadowing, and acting as a light-blocking element itself. This multi-functionality reduces the need for additional separate components, thereby achieving versatile light distribution control without proportionally increasing 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 arrangement achieves decorative lighting with dynamic shadowing effects while maintaining a low component count for cost-effectiveness and ease of recycling.
Implementation Method 1
The frame comprises a plurality of first elements of elongated shape defining a mesh structure of the frame, wherein the plurality of first elements comprises a material being at least partially opaque
Data Source
Figure 1~2b
Figure 2c~2d
Figure 3a~3b
AI summary
A LED filament arrangement (100), comprising a plurality of LED filaments (110a, 110b), each LED filament comprising an array of a plurality of light emitting diodes (120), LEDs, arranged on an elongated carrier (70), wherein a first LED filament (110a) elongates along a respective first axis, Ai, and a second LED filament (1 10b) of the plurality of LED filaments elongates along a respective second axis, Bi, wherein a respective angle, θi, between Ai and Bi fulfils |θi| > 10°, a frame (200) comprising a plurality of first elements (210) defining a mesh structure of the frame, wherein a first element elongates along a respective first element axis, Ci, wherein a respective first angle, αi, between Ai and Ci, and wherein a respective second angle, βi, between Bi and Ci fulfils |αi| ≠ |βi|, and a control unit configured to individually control the operation of the first and second LED filaments.