Wrist-Mounted Flashlight With Finger Remote Control
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Solution Overview
Problem
Conventional flashlights require users to occupy one hand to turn them on/off or switch between modes, diverting attention and limiting hands-free operation, especially in tasks that require both hands like handling firearms or assembling equipment in low-light conditions.
Innovation Solution
A wrist-mounted flashlight system with a remote control unit attached to the user's finger via a flexible cable, allowing fingertip operation to power the light on/off and switch between modes without diverting the beam, using a push button or capacitive touch switch and a cable winding system for secure storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the flashlight is held in hand for operation, then the user can directly control the flashlight, but the user cannot perform other tasks with that hand
Solution Approach 1:
The flashlight system is divided into two separate components: the wrist-mounted light unit and the finger-mounted remote control. This segmentation allows the light source to be worn on the wrist while the control function is relocated to the finger, enabling independent operation of each component and freeing the hand for other tasks.
Solution Approach 2:
A flexible cable connects the wrist-mounted flashlight to the finger-mounted remote control, serving as an intermediary that transmits control signals and power from the finger to the light unit. This intermediary connection enables remote operation while maintaining a compact, integrated system.
2Adaptability or versatility
If the flashlight is mounted on the wrist, then the hand is freed for other tasks, but the user cannot easily control the flashlight without removing a hand
Solution Approach 1:
The control function is separated from the light unit and relocated to a remote control mounted on the finger. This segmentation allows the wrist-mounted flashlight to remain accessible while the control interface is positioned on the finger, enabling easy control without removing the hand from other tasks.
Solution Approach 2:
The flexible cable acts as an intermediary connection between the wrist-mounted light unit and the finger-mounted remote control, enabling control signals to be transmitted from the finger to the light unit while maintaining physical separation and hands-free operation.
3Ease of operation
If a remote control is added to the wrist-mounted flashlight, then finger control is enabled, but the device complexity increases
Solution Approach 1:
The flexible cable serves multiple functions: it transmits power from the battery to the light unit, carries control signals from the remote to the light unit, and provides a physical connection between components. This multi-functionality reduces the need for separate cables or connectors for each function.
Solution Approach 2:
The remote control unit is combined with the light unit through the flexible cable connection, creating an integrated system where power, control, and structural elements are merged into a single wearable device rather than separate components.
Data Source
AI summary
A wrist-worn flashlight can include a lighting unit attached to a wrist band for allowing a user to wear the device on the wrist and a remote control that attaches to a finger of the user for allowing the user to control the light unit by finger. The remote control may allow the user to power the lighting unit on/off and/or switch between multiple lighting modes. The wrist-worn flashlight can enable a user to operate and toggle between modes using the user's fingertips. The flashlight can illuminate a target and free both hands of the user to work on the target. Moreover, the flashlight can allow the user to directionally train the beam on the target as desired and control the beam without diverting it.