Searchlight for coal mine

Abstract

The searchlight comprises a shell, and a setting cavity with a leftward opening is formed in the left end face of the shell; according to the principle of a liquid lens, the distance of a focus is changed by adjusting the curvature of the lens, so that the irradiation distance is adjusted without changing the power, the irradiation requirements under different conditions are met, the power is not changed, the service life of a bulb is prolonged to a certain extent, and the service life of the bulb is prolonged while illumination is provided. The device can detect the air quality in a coal mine, automatically gives an alarm to remind workers to take protection measures when the air quality is lower than a certain degree, improves the practicability, dissipates heat of a bulb through air flow during air quality detection, prevents the possibility that the bulb is burnt out, and improves the working efficiency. And moreover, the cleaning of the plate lens can be simply completed through the pull rope, the manual cleaning time is saved, and the illumination intensity is not influenced.

Description

technical field [0001] The invention relates to the technical field of coal mines, in particular to a searchlight for coal mines. Background technique [0002] Because the brightness inside the coal mine is relatively dark, workers need to wear lamps when mining, but most of the existing lamps cannot adjust the irradiation distance, and the versatility is poor, and the lamps that can adjust the irradiation distance are generally achieved by changing the power of the bulb. Adjust the irradiation distance, and long-term high-probability use will often affect the service life of the bulb, and the existing lamps can only be used for lighting, the function is relatively single, and the practicability is poor, and the dust in the coal mine often adheres to the The surface of the lamp affects the intensity of the lighting, and requires workers to wipe it frequently, which is troublesome. Contents of the invention [0003] The object of the present invention is to provide a searc...

AI Technical Summary

Problems solved by technology

[0002] Because the brightness inside the coal mine is relatively dark, workers need to wear lamps when mining, but most of the existing lamps cannot adjust the irradiation distance, and the versatility is poor, and the lamps that can adjust the irradiation distance are generally achieved by changing the power of the bulb. Adjust the irradiation distance, and long-term high-probability use will often affect the service life of the bulb, and the existing lamps can only be used for lighting, the function is relatively single, and the practicability is poor, and the dust in the coal mine often adheres to the The surface of the lamp affects the intensity of the lighting, and requires workers to wipe it frequently, which is troublesome

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