LED Light Unit in Cigarette Lighter Case
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Solution Overview
Problem
There is a need for a small light source that can fit into existing cigarette lighter cases, as the use of traditional lighters with open flames is declining and people want to maintain the aesthetic of their preferred lighter designs, such as the Zippo brand.
Innovation Solution
A compact LED light unit that fits inside a cigarette lighter case, featuring a switch that automatically turns on when the lid is opened, mimicking the action of some lighters, with a battery-powered LED and conductive contact plates to ensure reliable electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a traditional lighter with open flame is used, then illumination function is provided, but aesthetic appeal and portability are reduced due to decline in smoking culture and restrictions
Solution Approach 1:
The patent replaces the traditional flame-based mechanical lighter system with an LED electrical lighting system. The LED light unit includes an LED bulb, battery, and switch assembly that substitutes the flame generation mechanism, providing illumination without open flame while maintaining compatibility with modern restrictions and aesthetic preferences.
Solution Approach 2:
The patent employs nesting by placing the LED light unit inside the existing lighter case. The light unit case is designed to fit within the external lighter case, allowing the LED illumination system to be housed within the familiar Zippo-style case structure, thus preserving aesthetic appeal while providing modern illumination functionality.
2Illumination intensity
If a new light source is introduced, then illumination function is improved, but device complexity increases
Solution Approach 1:
The patent segments the light unit into distinct functional modules: a light housing section, a battery compartment, and a switch assembly. This segmentation allows each component to be independently designed and assembled, reducing overall complexity while maintaining full illumination functionality. The modular structure enables easy integration into the existing lighter case.
Solution Approach 2:
The LED light unit is designed to serve multiple functions within the lighter case ecosystem. It provides illumination, can be integrated with the existing lighter mechanism, and maintains compatibility with both disposable and refillable lighter types. This multi-functionality reduces the need for separate components, thereby simplifying the overall device structure.
3Ease of operation
If automatic switch activation is implemented, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The switch assembly is designed to automatically activate the LED illumination when the lighter case lid is opened. The mechanical linkage between the lid opening action and the switch activation creates a self-service system that requires no additional user input. This automatic activation mechanism uses the existing lid opening motion to trigger the light, thereby improving ease of operation without requiring complex electronic controls.
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 LED light unit provides a functional and aesthetically pleasing alternative to traditional lighters, allowing users to continue using their existing lighter cases while offering automatic illumination when needed.
Implementation Method 1
a LED is connected to at least one battery
Implementation Method 2
a LED is connected to at least one battery
Data Source
AI summary
A flash light for use with an external case is disclosed. The flashlight is designed such that when the lid to the case is open, the light automatically is turned on and when the lid is closed the light automatically is turned off.


