Helmet shield with dual cameras and liquid crystal display screen

Abstract

The invention discloses a helmet shield with dual cameras and a liquid crystal display screen. A flat light camera device is used for shooting images of welding rod positioning and arc ignition beforeelectric welding. A light filtering camera device is used for shooting the actual working condition in the electric welding process. A liquid crystal display device can individually or simultaneouslydisplay the images shot by the flat light camera device and the light filtering camera device in real-time, and includes a liquid crystal display screen which is arranged on the inner side surface ofthe main body of the mask, and is electrically connected with the flat light camera device and the light filtering camera device; and the observation eyepiece is used to enlarge the real-time image of the liquid crystal display screen to form a clear virtual image at a bright distance. The invention realizes real-time display of images before and during electric welding on a liquid crystal display screen through two camera devices, thereby avoiding the harm of harmful arc light caused by human eyes looking directly at an electric arc.

Description

technical field [0001] The invention relates to an electric welding mask with a double camera and a liquid crystal display. Background technique [0002] During the welding operation, a harmful electric welding arc will be generated. Welding arc light mainly includes infrared rays, visible rays and ultraviolet rays. The harm to the human body caused by the infrared rays of the welding arc is mainly caused by the thermal effect on the tissue. When the eyes are exposed to strong infrared radiation, they will immediately feel strong burns and burning pain. Long-term exposure will cause chronic damage to the eyes. After the eye lens absorbs excessive infrared rays for a long time, it will make its elasticity worse, difficult to adjust, and vision loss. It can also cause retinal burns. The luminosity of visible light from the welding arc is 10,000 times greater than the luminosity of light that the human eye can normally withstand, which will burn the retina and cause glare re...

AI Technical Summary

Problems solved by technology

However, the process of changing the light transmittance of the light-controlled welding mask takes time, so the effect of the arc light at the moment of arc start cannot be completely avoided, but the radiation intensity reaches a maximum value at the moment of arc start, so the arc light of electric welding will still cause damage to human eyes.

[0004] To sum up, in the case that the existing electric welding protective masks in the market cannot completely block harmful arc light, how to invent a kind of electric welding mask that can completely avoid harmful arc light from causing damage to human eyes is of great significance

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