Purse Illumination with Light-Emitting Fabric and Touch Switch
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Solution Overview
Problem
Existing purse lighting systems are cumbersome, prone to accidental activation, and do not effectively illuminate the interior from the bottom and sides, often using point sources that are not aesthetically pleasing and can lead to battery discharge without user knowledge.
Innovation Solution
A purse illumination system using light-emitting fabrics or electroluminescent wires that provide ambient lighting from the bottom and sides, with a touch-sensitive switch to prevent accidental activation, and the option to extend a continuous light wand for both functionality and decoration, incorporating LEDs or EL wires for aesthetic and utility purposes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If traditional point light sources are used in purse lighting systems, then the lighting function is provided, but the aesthetic appeal is poor and the lighting is not uniformly distributed
Solution Approach 1:
The patent uses flexible light-emitting fabrics that can be conformally attached to the interior surfaces of the purse. These fabrics emit light uniformly across their surface area, replacing point sources with distributed surface sources that provide even illumination while maintaining aesthetic appeal through flexible, decorative forms.
Solution Approach 2:
The invention transitions from point light sources (0D) to surface-distributed light sources (2D) by using fabrics that emit light across their entire surface. This dimensional change transforms the lighting from concentrated points to uniform distributed illumination, improving both aesthetic appearance and lighting uniformity.
2Ease of operation
If push switches are used for light activation, then the lighting can be turned on, but accidental activation occurs due to pressure from items within the purse
Solution Approach 1:
The patent replaces mechanical push switches with capacitive touch sensors that detect changes in electrical capacitance caused by finger contact. This substitution eliminates the mechanical vulnerability to pressure-activated triggering while maintaining ease of operation through simple touch interaction, thereby preventing accidental activation from purse contents.
Solution Approach 2:
The switching mechanism transitions from mechanical pressure detection to electrical capacitance detection. The capacitive sensor requires specific electrical contact conditions (finger touch) to activate, changing the activation parameter from mechanical force to electrical property, which prevents accidental triggering by non-human objects within the purse.
3Illumination intensity
If light-emitting fabrics and EL wires are used, then ambient lighting is provided from bottom and sides, but the device complexity increases
Solution Approach 1:
The lighting system is divided into separate functional modules: light-emitting fabrics for ambient illumination, EL wires for decorative accent lighting, and distinct control circuits for each type. This segmentation allows each component to be optimized independently and simplifies the overall system architecture by assigning specific functions to specific elements rather than using a single complex integrated system.
Solution Approach 2:
The patent employs multi-functional components where the same fabric or wire structure serves both aesthetic and lighting functions. The light-emitting fabrics provide both ambient illumination and decorative surface coverage, while EL wires serve both as accent lighting and structural decorative elements, reducing the need for separate dedicated components and thereby managing system complexity.
4Illumination intensity
If multiple separate lighting components are used, then comprehensive illumination is achieved, but the purse becomes bulky and cumbersome
Solution Approach 1:
The patent uses thin, flexible light-emitting fabrics that can be attached directly to the interior surfaces of the purse with minimal bulk. These fabrics provide comprehensive illumination coverage while adding negligible weight and volume compared to rigid lighting assemblies, thereby achieving thorough lighting without increasing purse bulk or weight.
Solution Approach 2:
The lighting components are nested within the existing purse structure rather than added as external attachments. The light-emitting fabrics are integrated into the interior lining, and EL wires are embedded within existing decorative elements, allowing the lighting system to occupy the same space as the purse contents without adding significant external bulk or weight.
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 system offers a simple, elegant, and efficient lighting solution that reduces battery discharge risks, enhances aesthetic appeal, and provides continuous, ambient illumination from the bottom and sides, while being lightweight and easy to use.
Implementation Method 1
light-emitting fabrics or electroluminescent wires that provide ambient lighting
Implementation Method 2
electroluminescent wires that provide ambient lighting
Implementation Method 3
EL wire to produce a continuous wand of light
Data Source
AI summary
A purse illumination assembly including a power source, a light emitting portion, a voice-sensitive switch, and a circuit assembly connecting the light emitting portion to the power source through the voice-sensitive switch. The light emitting portion may be a light emitting fabric or may include EL wire alone or in combination with LED lights to provide both lighting and a decorative effect. A driver circuit may be included for driving both the EL wire and the LED lights.