V-Geometry LED Filament Lamp Light Distribution
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Solution Overview
Problem
Existing LED lighting systems, particularly those with inverted V-geometry filaments, do not provide optimal light distribution patterns, limiting their effectiveness in various applications.
Innovation Solution
The use of a V-geometry arrangement for light emitting diode (LED) filaments in lamp assemblies, where the filaments are connected in a V-shape with a wider separation at the top and narrower at the base, enhancing light distribution by increasing the taper angle to direct more light towards the lower regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If inverted V-geometry filaments are used in LED lamps, then the structural stability is maintained, but the light distribution pattern is suboptimal with dark areas in lower regions
Solution Approach 1:
The patent inverts the conventional inverted V-geometry to a V-geometry configuration. By flipping the filament arrangement from an inverted V shape to a V shape, the light distribution is fundamentally altered to direct more light toward lower regions, eliminating dark areas while maintaining structural stability.
Solution Approach 2:
The patent modifies the geometric parameters of the filament arrangement by changing the taper angle and overall V-shape configuration. This parameter change optimizes the light distribution pattern to provide enhanced illumination in lower regions while maintaining the structural integrity of the lamp assembly.
2Illumination intensity
If V-geometry with wider separation at top is used, then light distribution to lower regions is improved, but the base diameter becomes smaller than the top portion
Solution Approach 1:
The patent employs asymmetric V-geometry where the filament assembly has different dimensions at the base versus the top. The base diameter is intentionally made smaller than the top portion diameter, creating an asymmetric structure that optimizes light distribution to lower regions while maintaining structural stability through the asymmetric configuration.
3Use of energy by moving object
If LED filaments are used instead of traditional filaments, then energy efficiency and longevity are improved, but optimal light distribution for various applications is not achieved
Solution Approach 1:
The patent optimizes the light distribution effectiveness of LED filaments by changing the geometric parameters of the filament assembly. The V-geometry configuration with specific taper angles and width variations at different heights maximizes the utilization of LED energy output to achieve optimal light distribution across various application zones.
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
This configuration results in a more uniform and enhanced light distribution pattern, particularly beneficial for decorative and floor lighting applications, providing increased lumens in desired zones and minimizing dark areas.
Implementation Method 1
A filament assembly is in electrical connection with the electrical leads and includes at least two light emitting diode filaments
Data Source
AI summary
A light engine that includes electrical leads extending into a supporting stem and a filament assembly having a V-shaped geometry in electrical connection with the electrical leads. The filament assembly includes at least two light emitting diode (LED) filaments wherein a first end of the filament assembly is in electrical contact with the electrical leads and provides an apex portion of the V-shaped geometry, and a second end of the filament assembly opposite the first end has a second width greater than the first width of the apex portion. An electrically conductive pathway connects the at least two light emitting diode (LED) filaments at the second end of the filament assembly.