Lighted Paintbrush with Segmented LED Illumination
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Solution Overview
Problem
Existing illumination solutions for paintbrushes, such as those described in U.S. Pat. Nos. 4,916,773 and 2006/0215391, face challenges in providing targeted and efficient lighting, often requiring manual adjustment, bulkiness that interferes with grip and view, and lack of water/paint splatter protection, making them impractical for precise painting tasks.
Innovation Solution
A lighted paintbrush apparatus with strategically positioned lights, sealed power sources, and protective coverings that can be attached to various brush types, providing optimal illumination to specific areas while maintaining a natural appearance and ensuring water resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a traditional work light is used to illuminate confined areas, then the illumination intensity is high, but numerous shadows are cast directly in front of the brush making it difficult to see and paint accurately
Solution Approach 1:
The illumination system is segmented into multiple small LED light sources distributed around the brush ferrule area, rather than using a single centralized light source. This segmentation allows light to be emitted from multiple angles, reducing shadow casting while maintaining adequate illumination intensity for precise painting work.
Solution Approach 2:
The lighting approach transitions from a single-directional work light to a multi-dimensional illumination system with LEDs positioned at various angles around the ferrule. This dimensional distribution of light sources eliminates the shadow problem by illuminating the work area from multiple spatial directions simultaneously.
2Adaptability or versatility
If the power source is mounted on the ferrule area to provide illumination, then the lighting function is integrated, but additional bulk is added that blocks the painter's view and affects natural gripping
Solution Approach 1:
The power source and illumination components are localized to specific areas around the ferrule rather than mounting bulk on the ferrule itself. LEDs are positioned in the space between the ferrule and handle, utilizing otherwise wasted space to provide illumination without interfering with the painter's natural grip on the handle.
Solution Approach 2:
The illumination components (LEDs, battery, circuit board) are nested within the existing brush structure, specifically in the space between the ferrule and handle. This nesting approach integrates the power source functionality while maintaining a compact profile that does not interfere with gripping or viewing.
3Reliability
If wires are used to attach the illumination means to the ferrule, then the illumination is secured, but the ferrule must be custom-designed and cleaning becomes difficult
Solution Approach 1:
The illumination components are extracted from a wired, fixed mounting system and replaced with a wireless, snap-fit battery housing assembly. This extraction eliminates the need for custom ferrule designs to accommodate wires, allowing use of standard ferrules and simplifying both manufacturing and cleaning processes while maintaining reliable illumination securement through the snap-fit mechanism.
4Device complexity
If the illumination means is attached to the brush without protective coverings, then the structure is simple, but water and paint splatter can damage the lighting components
Solution Approach 1:
A clear, flexible protective coating is applied over the LED lights and battery housing, forming a protective film that shields the components from water and paint splatter. This thin film protection maintains the structural simplicity and visual clarity of the design while providing necessary environmental protection for reliable operation.
Data Source
AI summary
This application describes an illumination means, and a method of attaching the accessories and protective coverings of the illumination means to a paintbrush to illuminate a work area, and to protect that illumination means from water and chemicals, while maintaining a compact, streamlined form that is easy to clean. With these illumination accessories and protection means installed, the intended use of the brush is primarily painting, and specifically cutting in around a trim or casing. The present invention provides the optimal lighting required for that specific work area, with no manipulation of the brush required by the user. Superior lighting is achieved by structurally directing light sources (LED's) to the specific location where the paint leaves the bristles while cutting in, and/or also structurally directing at a different angle to light up the general work area around the bristles while painting. Protective coverings are form-fitting and of minimal thickness.