Safety cap lens with color changing function

Abstract

The invention discloses a safety cap lens with a color changing function. A photochromic material is added in plastic and is mixed, and the mixed material is injected and molded by a plastic injectionmolding machine to obtain an arc-shaped lens used for cooperating with a safety cap. The two sides of the lens are provided with pin joint portions respectively. The pin joint portions are provided with positioning embedded holes. The top edge of the lens is convexly provided with a positioning separation blade. The lens is arranged on the safety cap. A photochromic material on the lens generatesa color change reaction to ultraviolet light intensity so that when the ultraviolet light is strong, the lens becomes dark and has less light transmission, and a sunshade effect can be achieved. Whenthe ultraviolet light is weak, the lens becomes transparent and has good light transmission. The lens can change colors according to the intensity of ultraviolet light so as to achieve the effect ofprotecting eyes.

Description

technical field [0001] The present invention relates to a safety helmet lens with color-changing function, in particular to a kind of plastic with photosensitive color-changing material added and mixed, and the mixed material is injected and molded by a plastic injection molding machine to obtain a curved shape matching a safety helmet. Helmet lenses with photochromic function. Background technique [0002] Press, most of the general safety helmets are provided with a lens that can be flipped upwards and shielded downwards. The lens is mostly set as a transparent lens with good light transmission or a sunshade lens with color. A transparent lens with good performance has no sunshade effect. If it encounters the sun, the glare and strong light of the sun will easily cause damage to the eyes, and the strong light will easily cause the motorcyclist to be unable to see clearly ahead and cause danger. In addition, wear sunglasses to block light; if a colored sunshade lens is ins...

AI Technical Summary

Problems solved by technology

[0002] Press, most of the general safety helmets are provided with a lens that can be flipped upwards and shielded downwards. The lens is mostly set as a transparent lens with good light transmission or a sunshade lens with color. A transparent lens with good performance has no sunshade effect. If it encounters the sun, the glare and strong light of the sun will easily cause damage to the eyes, and the strong light will easily cause the motorcyclist to be unable to see clearly ahead and cause danger. In addition, wear sunglasses to block light; if a colored sunshade lens is installed on the helmet, although the strong sunlight can be shielded, but when there is no sunlight at night, the sunshade lens will appear too dark to see the front clearly at night , there is still a risk of danger, so when there is no sunlight or at night, the sunshade lens must be lifted upwards so that the sunshade lens no longer covers the driver's eyes, so that the driver can see clearly ahead, but often because the eyes are not covered by the lens protection, and there is the worry of foreign matter flying into the eyes; another kind of helmet is equipped with a transparent lens and a sunshade lens at the same time, but the cost of this helmet with two different lenses is higher, and it is difficult to use. Comparing trouble; In view of this, the safety helmet that installs a color-changing lens begins to appear on the market, and the color-changing lens on the existing safety helmet mostly is electroplating (or pasting or spraying) a layer of color-changing film layer on the surface of the lens, However, this color-changing lens is prone to fall off and become invalid after being used for a period of time, and has a short service life.

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