Multi-Position Flashlight Head for Helmet Downlight Orientation
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Solution Overview
Problem
Existing flashlights with both forward and downward lights are limited in their versatility, often requiring the downlight direction to change based on the side of attachment, which can interfere with other equipment on a helmet, and lack efficient battery charge indicators.
Innovation Solution
A flashlight design with a head that can be attached in two positions to ensure the downlight always faces downward, regardless of helmet side, and includes a selectively illuminable indicator ring to show battery charge status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the flashlight is mounted on different sides of the helmet, then the downlight direction changes based on attachment side, but this causes interference with other equipment and reduces usability
Solution Approach 1:
The head is designed with a rotatable joint that allows it to be positioned in multiple orientations (first position with downlight facing forward, second position with downlight facing backward). This dynamic positioning capability enables the flashlight to maintain proper downlight direction regardless of which side of the helmet it is mounted on, resolving the contradiction between mounting flexibility and directional control.
2Adaptability or versatility
If the flashlight provides both forward light and downward light functions, then versatility is improved, but device complexity increases
Solution Approach 1:
The flashlight integrates multiple lighting functions into a single device: a front light for forward illumination, a downlight for downward pathway illumination, and an indicator ring for battery status display. The head structure is designed to accommodate these multiple light sources and their respective optical systems, enabling one device to perform multiple lighting tasks that would otherwise require separate equipment.
Solution Approach 2:
The indicator ring is nested within the head structure, positioned between the head and body when attached. This nested arrangement allows the indicator ring to be integrated into the existing flashlight structure without significantly increasing external dimensions or overall complexity, while still providing the additional battery status display function.
3Ease of operation
If the flashlight includes battery charge indication, then user convenience is improved, but device complexity increases
Solution Approach 1:
The indicator ring uses color changes to communicate battery charge status. The ring can display different colors (such as green for charged, yellow for partially charged, red for low charge) to provide clear visual feedback about battery status. This color-coded system conveys multiple pieces of information through a single visual element, improving user convenience without requiring complex display mechanisms.
Data Source
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AI summary
Flashlights and methods of use. A flashlight includes a body that defines a longitudinal axis and a head releasably attached to the body. The head includes a front light defining a first axis parallel to the longitudinal axis and a downlight defining a second axis perpendicular to the longitudinal axis. A power source assembly disposed within the body comprises at least one battery disposed within a heat sink formed of a thermally-conductive metal material. The head is selectively attachable to the body in either of a first position and a second position. In the first position, the downlight faces a first direction relative to the body and in the second position the downlight faces a second direction relative to the body that is opposite the first direction.