Patent ID: 8331001

Claim:
A welding filter device, comprising: a light sensor for sensing light to generate a welding signal and a light source intensity signal; a microprocessor, comprising: a determining module electrically connected to the light sensor for receiving the welding signal and determining whether to activate a welding mechanism; a control module electrically connected to the light sensor, wherein when the welding mechanism is activated, the control module receives the light source intensity signal and outputs a control signal according to the light source intensity signal; a regulating module electrically connected to the control module; and a storage module electrically connected to the control module; a liquid crystal display for controlling at least one setting of the liquid crystal display according to the control signal to present a first display status; and a user interface electrically connected to the regulating module for generating a setting signal; wherein when the liquid crystal display presents the first display status, the regulating module receives the setting signal to regulate the setting of the liquid crystal display so that the liquid crystal display presents a second display status; wherein the storage module stores the second display status of the liquid crystal display based on different kinds of light so that next time the welding filter device is used, when the light sensor senses the light, the control module outputs the control signal according to the second display status stored in the storage module for controlling the liquid crystal display to present the second display status.