Auto-Darkening Welding Helmet With Filter-Synced LED Lighting
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Solution Overview
Problem
Operators face difficulties in welding in dark and small spaces due to the inconvenience of removing auto-darkening welding helmets to access lighting devices and frequent on/off operations, which hinder efficient workpiece observation.
Innovation Solution
An auto-darkening welding helmet with a built-in lighting device that automatically turns on/off based on the state of the auto-darkening filter, using a liquid crystal panel and optical sensor, allowing the operator to maintain visibility without helmet removal during welding operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the operator removes the welding helmet to access the lighting device in dark and small spaces, then the lighting device can be operated, but the operator cannot observe the welding state and the operation becomes inconvenient
Solution Approach 1:
The patent integrates the lighting device directly into the welding helmet structure, merging two previously separate functions (welding protection and illumination) into a single unified device. This allows the operator to access lighting functionality without removing the helmet, resolving the contradiction between needing illumination and maintaining welding state observation.
2Illumination intensity
If the operator frequently turns on/off the lighting device for welding tests, then the lighting can be controlled, but the operation becomes complex and time-consuming
Solution Approach 1:
The patent implements automatic control of the lighting device based on feedback from the auto-darkening filter state. The lighting device automatically turns on when the filter is in the darkening state and turns off when the filter is in the transparent state, eliminating manual on/off operations and reducing operational complexity.
Solution Approach 2:
The lighting device is designed to self-regulate its operation based on the welding state detected by the auto-darkening filter. The system automatically determines when lighting is needed without requiring operator intervention, simplifying the operation while maintaining appropriate illumination control.
3Illumination intensity
If the operator uses one hand to operate and hold the lighting device, then the lighting can be controlled, but the operation becomes inconvenient in small spaces
Solution Approach 1:
By integrating the lighting device into the welding helmet structure, the patent eliminates the need for the operator to separately hold and operate a handheld lighting device. The lighting function becomes an inherent part of the helmet, freeing the operator's hands for welding operations in confined spaces.
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
Enhances work efficiency by automatically controlling the lighting device to match the welding state, ensuring clear observation of the welding process without manual intervention, even in confined spaces.
Implementation Method 1
an auto-darkening filter installed in the helmet casing and including a liquid crystal panel switchable between a non-opaque state and an opaque state
Implementation Method 2
the auto-darkening filter comprises an optical sensor for receiving an arc-light signal, wherein depending on existence of the arc-light signal, the control circuit determines whether the liquid crystal panel is in the non-opaque or opaque state
Implementation Method 3
a lighting device installed in the helmet casing, wherein the lighting device comprises a light-emitting diode (LED) lamp for emitting light
Data Source
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AI summary
An auto-darkening welding helmet comprises a helmet casing (20), an auto-darkening filter (40) installed in the helmet casing (20) and a lighting device (60) installed in the helmet casing, wherein the auto-darkening filter (40) includes a liquid crystal panel (41) which is switchable between a non-opaque state and an opaque state, wherein the lighting device (60) comprises a cable (62) connectable to the auto-darkening filter (40) such that when the liquid crystal panel (41) is in the non-opaque state the lighting device (60) automatically emits light towards a front of the liquid crystal panel (41) and when the liquid crystal panel (41) is in the opaque state the lighting device (60) does not automatically emit light.