Ring-Shaped Filament Lamp Conductor for Simpler Multi-Filament Assembly
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Solution Overview
Problem
Existing filament lamps with multiple filaments face challenges in ease of manufacturing and efficient electrical connection, leading to increased complexity and costs.
Innovation Solution
A filament lamp design featuring a conductor element formed from a single, continuous length of bent conductive wire, with a ring-shaped frame and protrusions for attaching and electrically connecting multiple filaments, allowing for simultaneous power supply and improved mounting ease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate connectors are used to connect each filament end to a common node, then reliable electrical connection is achieved, but device complexity and manufacturing cost increase
Solution Approach 1:
Multiple separate connectors are merged into a single integrated conductor element formed from one continuous piece of bent conductive wire. This conductor element has a ring-shaped frame with multiple protrusions, where each protrusion connects to a filament end. The merging reduces the number of separate components while maintaining reliable electrical connections to all filaments through the integrated structure.
Solution Approach 2:
The single conductor element performs multiple functions simultaneously: it provides electrical connection to multiple filament ends, establishes a common reference potential for all filaments, and provides mechanical support structure. This multi-functional design replaces what would otherwise require multiple separate connectors and support elements.
2Reliability
If traditional multiple connector arrangements are used, then electrical connections are established, but ease of manufacture deteriorates due to increased assembly complexity
Solution Approach 1:
The conductor element is segmented into multiple protrusions that extend from the ring-shaped frame, with each protrusion designed to receive and connect to a specific filament end. This segmentation allows for systematic assembly where each protrusion can be independently positioned and connected, simplifying the manufacturing process while maintaining reliable connections.
Solution Approach 2:
The conductor element is pre-formed into its final ring-shaped configuration with all protrusions in their correct positions before assembly with the filaments. This preliminary formation of the conductor element structure eliminates the need for complex on-site assembly operations, as the conductor is ready to receive filament connections in a predetermined arrangement.
3Ease of manufacture
If a single continuous piece of conductive wire is used to form the conductor element, then material costs and manufacturing complexity are reduced, but structural integrity may be compromised
Solution Approach 1:
The conductor element is formed into a ring-shaped frame with curved contours rather than straight rigid segments. This curved geometry provides inherent structural strength and flexibility, allowing the single continuous piece of conductive wire to maintain its integrity while accommodating thermal expansion and mechanical stresses during operation.
Solution Approach 2:
The conductor element has varying local properties: the ring-shaped frame provides overall structural strength and stability, while the protrusions are designed with specific geometries optimized for filament connection. This local differentiation of structure and function allows the single piece to simultaneously achieve strength where needed and ease of connection where required.
Data Source
AI summary
A filament lamp (10) comprising a conductor element (100) that connects to at least two filaments (15). The conductor element is ring-shaped and formed of a continuous length or piece of bent conductive wire. The conductor element comprises a plurality of protrusions (111, 112, . . . , 118) to which a respective filament is attached and/or electrically connected. The conductor element lies in a first plane (410). Each of the plurality of protrusions is configured to provide a surface to which a respective filament of the filament lamp is electrically connectable. The surface is inclined with respect to the first plane.