A waterproof flashlight with optical zoom

Abstract

The invention discloses a waterproof flashlight with an optical zooming function. The waterproof flashlight comprises a lens tube assembly, an optical assembly, a hand wheel focusing assembly, a light source assembly, a power supply assembly and a hand wheel switch assembly, wherein the hand wheel focusing assembly is movably sheathed on the lens tube assembly, a lens assembly is slidingly arranged in the lens tube assembly, and is driven by the hand wheel focusing assembly, one side of the light source assembly is in sealed connection with the lens tube assembly, the other side of the light source assembly is in sealed connection with the power supply assembly, and the hand wheel switch assembly is movably sheathed on the light source assembly and is used for controlling the energizing and deenergizing of the light source assembly. The waterproof flashlight has the advantages that the distance between the optic assembly and the light source assembly is adjustable, so the emitting angle of the light beam is changed, the long-distance and short-distance illumination effects are good, and the utilization rate of light energy is high; in addition, the interior and exterior isolation design is adopted for a focusing, opening and closing structure of the flashlight, so the inner components of the flashlight are completely isolated from the outside, the waterproof performance is good, the reliability is high, and the processing cost is greatly reduced.

Description

technical field [0001] The invention belongs to the field of lighting appliances, and in particular relates to a waterproof flashlight capable of optical zooming. Background technique [0002] Most of the existing flashlights use reflective cups to gather and emit light. Since the light source is not a small light spot, it is difficult to achieve the theoretical purpose of light convergence. In addition, the surface reflectivity of the reflective cup cannot be very high, resulting in light energy. Utilization is drastically reduced. [0003] In order to change the focal length of the optical lens group, such as the camera lens and the zoom lens group of the scope, most of them are rotated by the hand wheel with the guide pin fixed, and the tube with the curved groove is driven by the guide pin to rotate, and then the distance between the optical lens groups is moved to reach The purpose of changing the focal length of the optical system. In order to make the product waterp...

AI Technical Summary

Problems solved by technology

In order to make the product waterproof, rubber sealing rings are installed at the fixed position and the rotating position, especially the accuracy of the sealing ring at the rotating part of the handwheel is particularly important. The use of lower depths requires higher sealing performance of the product, which greatly increases the cost of the product, and after a long period of use, the sealing ring will gradually age, and the waterproof performance will also decrease.

In addition, most of the existing flashlight switches are contact mechanical switches, which are poorly sealed and cannot be waterproofed.

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