Hand-Held Power Tool Lighting with Multi-Angle Shadow Elimination
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Solution Overview
Problem
Conventional hand-held power tools with integrated lighting elements fail to provide clear illumination of the work-piece or execution element in substandard light conditions due to shadow formation, making operation inconvenient.
Innovation Solution
A hand-held power tool design featuring a housing with lighting elements distributed around the longitudinal axis, supported by a circuit board and fixed by a main body and fixing member, allowing light to be emitted from multiple angles and preventing shadow formation, along with additional features like shock-absorbing elements and battery power indication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single lighting element is used to illuminate the execution element, then the lighting element can be simply arranged between a trigger and a housing or at edge portion of a battery pack, but a shadow of the execution element is unduly formed and the work-piece cannot be clearly seen
Solution Approach 1:
The lighting system is segmented into multiple lighting elements (first lighting element and second lighting element) positioned at different locations. The first lighting element is arranged between the trigger and housing, while the second lighting element is arranged at the edge portion of the battery pack, creating multiple light sources that illuminate the execution element from different angles to eliminate shadows
Solution Approach 2:
The lighting solution transitions from a single-point light source to a multi-dimensional lighting arrangement. By positioning lighting elements at different spatial locations (between trigger and housing, and at battery pack edge), the system creates three-dimensional illumination that covers the execution element comprehensively, eliminating the shadow problem caused by single-directional lighting
2Illumination intensity
If lighting elements are distributed around the longitudinal axis, then clear visibility without shadows is achieved, but the device complexity increases
Solution Approach 1:
The battery pack edge portion serves multiple functions: it provides structural support for the power tool and simultaneously hosts the second lighting element. This multi-functional design allows the lighting system to achieve comprehensive illumination without adding excessive complexity, as the lighting element integrates with existing structural components
Solution Approach 2:
Different lighting elements are positioned at specific locations optimized for their illumination function. The first lighting element is placed where it can illuminate the execution element from the front, while the second lighting element is positioned at the battery pack edge to provide supplementary lighting from a different angle. Each location is carefully selected to maximize illumination effectiveness while maintaining reasonable structural complexity
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 solution enables clear visibility of the work-piece or execution element even in substandard light conditions, enhancing operational convenience and safety by minimizing shadows and providing power status feedback.
Implementation Method 1
The illuminating assembly includes a plurality of lighting elements distributed on the housing around the first longitudinal axis
Data Source
AI summary
A hand-held power tool includes a housing defining a first longitudinal axis and an illuminating assembly mounted to the housing. The illuminating assembly includes lighting elements distributed on the housing around the first longitudinal axis, a circuit board electrically connected to the lighting elements, a main body, and a fixing member. The lighting elements are supported by the circuit board. The main body partially covers the lighting elements and the circuit board. The lighting elements and the main body are fixed to the housing by the main body cooperative with the fixing member. The lighting elements are distributed around the first longitudinal axis so that light of the lighting elements can be emitted from multiple different angles, shadows are avoided in corresponding zones, and therefore the lighting elements can be called shadow-less lighting elements.