Variable Rigidity LED Strip for 3D Lamp Installation
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Solution Overview
Problem
Conventional LED strip lamps have limited length and require multiple short strips for high light output and uniform radiation, leading to complex and costly connection technologies, and existing solutions do not effectively utilize installation space.
Innovation Solution
A strip-shaped illuminant device with a substrate having sections of varying flexural rigidity, allowing the device to be bent into a three-dimensional shape, with optoelectronic components on unbent sections to increase installation space utilization and reduce electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the LED strip is made rigid to ensure structural stability, then the structural stability is improved, but the installation space utilization deteriorates due to limited length and inability to bend
Solution Approach 1:
The substrate is divided into multiple sections with different flexural rigidities. First sections have reduced flexural rigidity to allow bending for space utilization, while second sections maintain high flexural rigidity to provide structural stability and support optoelectronic components. This segmentation resolves the contradiction by assigning different mechanical properties to different functional zones.
Solution Approach 2:
Different sections of the substrate are given different local mechanical properties. The first sections are designed with lower flexural rigidity specifically where bending is needed for installation, while the second sections maintain high flexural rigidity where structural support and component mounting are required. This local differentiation allows simultaneous achievement of space utilization and structural stability.
2Illumination intensity
If multiple short LED strips are used to achieve high light output and uniform radiation, then the light output is improved, but the device complexity increases due to multiple connections
Solution Approach 1:
Multiple LED strips are merged into a single continuous substrate structure with varying flexural rigidity. The substrate can be bent into three-dimensional shapes to accommodate long LED strip arrangements within the lamp envelope, eliminating the need for multiple separate strips and their associated connections. This merging reduces device complexity while maintaining high light output through increased LED chip quantity.
3Volume of moving object
If the substrate is made flexible to increase length and accommodate more components, then the installation space utilization is improved, but the structural stability deteriorates
Solution Approach 1:
The substrate is segmented into first sections with reduced flexural rigidity for bending and second sections with maintained high flexural rigidity for structural support. This segmentation allows the substrate to be flexible where needed for installation while remaining stable where components are mounted, resolving the contradiction between flexibility and structural integrity.
Data Source
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AI summary
The invention relates to a ribbon-shaped light source device (1), a lamp (12) with at least one such ribbon-shaped light source device (1), and a method for manufacturing the ribbon-shaped light source device (1). The ribbon-shaped light source device (1) for a lamp (12), in particular an LED lamp, comprises: at least one first section (5, 5') and at least one second section (6, 6'), wherein the first section (5, 5') has a reduced bending stiffness compared to the second section (6, 6'), and wherein the ribbon-shaped light source device (1) is bent in the at least one first section (5, 5') with the reduced bending stiffness such that a flat initial shape of the ribbon-shaped light source device (1) assumes a three-dimensional final shape.