CN214858197U

CN214858197U - Antifog goggles of multilayer lens

Info

Publication number: CN214858197U
Application number: CN202121074653.6U
Authority: CN
Inventors: 罗晓庆; 孙济宇; 王慧; 吴艳敏; 官杰; 王琪
Original assignee: Qiqihar Medical University
Current assignee: Qiqihar Medical University
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-11-26
Anticipated expiration: 2031-05-19

Abstract

The utility model discloses an antifog goggles of multilayer lens belongs to eye protection equipment technical field. The safety goggles comprise goggles lenses A, goggles lenses B, an elastic head band, goggles frame and a ventilation valve, wherein the goggles lenses A and the goggles lenses B are respectively fixedly connected with the front end frames of the goggles frame; a cavity with a certain gap is formed between the goggle lens A and the goggle lens B, the cavity is in a completely sealed state, and the goggle lens A and the goggle lens B together form a goggle lens group with a multilayer hollow structure; the both ends position of goggles picture frame rear side respectively with the both ends fixed connection of elasticity bandeau, the soft cotton pad of the inboard fixedly connected with rectangular shape of centre department of elasticity bandeau, the position of the top both sides edge of goggles picture frame, a columniform scavenging valve of fixedly connected with respectively. The utility model discloses convenient and practical has reduced the difference in temperature between inlayer lens and the mirror intracavity portion air, the effectual problem of having solved the lens and having gone up the fog.

Description

Antifog goggles of multilayer lens

Technical Field

The utility model relates to an antifog goggles of multilayer lens belongs to eye protection equipment technical field.

Background

The goggles with the protective frame are common personal protective equipment in a laboratory, are used for enhancing the protection of eyes of workers exposed in a virus-containing environment and preventing aerosol of particles containing virus droplets and the like from carrying viruses to invade a human body from the eyes. In actual use, the goggles form a closed space in front of eyes of a user, namely a goggle cavity, because human eyes and facial skin can not evaporate moisture constantly, water vapor can be accumulated in the goggle cavity due to the existence of the goggle cavity, but the existing goggles are of single-layer structures, when the external environment temperature is lower, an obvious temperature difference can be formed inside and outside the goggle cavity, when the temperature of the inner surface of the lens is lower than the temperature of the air inside the goggle cavity, the water vapor in the goggle cavity can be condensed on the inner surface of the lens to cause fog on the lens, the sight of the user is seriously obstructed, and the normal work of the user is influenced.

The existing goggles adopt the following two solutions for solving the problems: firstly, the lens frame is provided with a vent hole and a vent valve, partial water vapor is discharged by utilizing the vent valve or the vent hole to achieve the effect of reducing the fog on the lens, the vent valve is small, the ventilation volume is extremely limited, the water vapor cannot be fully discharged, and the lens is difficult to avoid the fog on the lens after being worn for a long time; secondly, the inner surface of the lens is coated with a special surfactant to interfere the water vapor condensation process, the antifogging effect of the lens is only maintained for 10 minutes, and the lens fails immediately after the water vapor concentration in the lens cavity is increased. Either one or both of the above two schemes can not effectively solve the fogging problem on the lens.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides an antifog goggles of multilayer lens, the device are applicable to the experiment or medical care work in, convenient and practical has reduced the difference in temperature between inlayer lens and the mirror intracavity portion air, the effectual problem of lens upfogging of having solved.

The utility model provides a technical scheme that its technical problem adopted is: a multi-layer lens antifogging goggle comprises a goggle lens A, a goggle lens B, an elastic head band, a goggle frame and a ventilation valve.

The goggle lens A and the goggle lens B are respectively fixedly connected with the front edge frame of the goggle frame, the size of the goggle lens A is consistent with that of the goggle lens B, the goggle lens A is positioned in the front of the goggle lens B, the goggle lens A is an outer layer lens, and the goggle lens B is an inner layer lens; a cavity with a certain gap is formed between the goggle lens A and the goggle lens B, the cavity is in a completely sealed state, and the goggle lens A and the goggle lens B together form a goggle lens group with a multilayer hollow structure; the positions of the two tail ends of the rear side of the goggle frame are respectively fixedly connected with the two ends of the elastic head band, the inner side of the middle part of the elastic head band is fixedly connected with a long strip-shaped soft cotton pad, the positions of the edges of the two sides of the top part of the goggle frame are respectively and fixedly connected with a cylindrical air exchange valve, and the air exchange valve is positioned at the position behind a goggle lens group consisting of a goggle lens A and a goggle lens B; the nose pad at the lower part of the middle of the goggle frame is of an arc structure.

The device changes the single-layer lens of the existing goggles into the double-layer goggles lens, adopts the structure mode of the hollow multi-layer lens, utilizes a small amount of gas (or vacuum) sealed between the multi-layer lens to form a heat insulation layer, effectively reduces the heat conduction between the inner and outer layer lenses of the goggles lens A and B, reduces the influence of the external environment temperature on the temperature of the inner layer goggles lens B, reduces the temperature difference between the inner surface of the inner layer goggles lens B and the air in the lens cavity, and achieves the purpose of preventing the inner surface of the goggles lens B from fogging; the cavity between the goggles lens A and the goggles lens B is completely sealed, so that a small amount of gas sealed inside the goggles lens A cannot be exchanged with the outside, and even gas with lower heat conductivity coefficient or direct vacuum pumping can be filled into the cavity according to the strength of specific materials of the inner and outer layer lenses of the goggles lens A and the goggles lens B.

Because the elastic head band of the goggles device has stronger elasticity, the strip-shaped soft cotton pad at the inner side of the middle part of the elastic head band is beneficial to improving the comfort level of the back part of the brain of a user, and the nose pad with the arc-shaped structure at the lower part of the middle part of the goggle frame can improve the comfort level of the nose bridge of the user, thereby avoiding uncomfortable feeling caused by long-time wearing; a scavenging valve to provide fresh air to the user.

The utility model has the advantages that: the utility model has the advantages of simple structure and reasonable design, convenient and practical changes original individual layer lens into the mode of cavity multilayer lens, utilizes confined a small amount of gas formation insulating layer between the multilayer lens, has effectively reduced the heat-conduction between the ectonexine lens, has solved the problem of lens internal surface upwarping, makes its sight that no longer hinders the user, guarantees the use that the goggles can be normal, makes the field of vision clear open, has improved user's work efficiency, wears also more comfortablely.

Drawings

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top view of fig. 1.

Reference numbers in the figures:

1. goggles lens A, 2, goggles lens B, 3, elasticity bandeau, 4, goggles picture frame, 5, breather valve, 6, cavity, 7, soft cotton pad.

Detailed Description

As shown in fig. 1-2, a multi-layer lens antifogging goggle comprises a goggle lens a1, a goggle lens B2, an elastic headband 3, a goggle frame 4 and a ventilation valve 5, wherein the goggle lens a1 and the goggle lens B2 are respectively fixedly connected with a front edge frame of the goggle frame 4, the size of the goggle lens a1 is consistent with that of the goggle lens B2, the goggle lens a1 is in front of the goggle lens B2, the goggle lens a1 is an outer layer lens, and the goggle lens B2 is an inner layer lens; a cavity 6 with a certain gap is arranged between the goggle lens A1 and the goggle lens B2, the cavity 6 is in a completely sealed state, and the goggle lens A1 and the goggle lens B2 form a goggle lens group with a multilayer hollow structure together; the rear ends of the two ends of the rear side of the goggle frame 4 are respectively fixedly connected with the two ends of the elastic head band 3, the inner side of the middle part of the elastic head band 3 is fixedly connected with a strip-shaped soft cotton pad 7, the positions of the edges of the two sides of the top part of the goggle frame 4 are respectively and fixedly connected with a cylindrical air exchange valve 5, and the air exchange valve 5 is positioned at the rear part of a goggle lens group consisting of a goggle lens A1 and a goggle lens B2; the nose pad at the lower part of the middle of the goggle frame 4 is of an arc structure.

The device changes the single-layer lens of the existing goggles into a double-layer goggle lens, adopts the structure mode of a hollow multi-layer lens, utilizes a small amount of enclosed gas (or vacuum) between the multi-layer lens to form a heat insulation layer, effectively reduces the heat conduction between the goggle lens A1 and the inner and outer layer lenses of the goggle lens B2, reduces the influence of the external environment temperature on the temperature of the inner layer goggle lens B2, reduces the temperature difference between the inner surface of the inner layer goggle lens B2 and the air in the lens cavity, and achieves the purpose of preventing the inner surface of the goggle lens B2 from being fogged; the cavity 6 between the goggle lens A1 and the goggle lens B2 is completely sealed, so that a small amount of gas sealed inside the goggle lens A1 cannot be exchanged with the outside, and the goggle lens A1 and the goggle lens B2 can even be filled with gas with lower heat conductivity coefficient or directly vacuumized according to the strength of specific materials of inner and outer layer lenses.

Because the elastic head band 3 of the goggles device has stronger elasticity, the strip-shaped soft cotton pad 7 at the inner side of the middle of the elastic head band 3 is beneficial to improving the comfort level of the back part of the brain of a user, and the nose pad of the arc-shaped structure at the lower part of the middle of the goggle frame 4 can improve the comfort level of the nose bridge of the user, thereby avoiding uncomfortable feeling caused by long-time wearing; a scavenging valve 5 to provide fresh air to the user.

Claims

1. The utility model provides an antifog goggles of multilayer lens, includes goggles lens A (1), goggles lens B (2), elasticity bandeau (3), goggles picture frame (4) and breather valve (5), its characterized in that: the goggles lens A (1) and the goggles lens B (2) are fixedly connected with the front end frame of the goggles frame (4) respectively, the sizes of the goggles lens A (1) and the goggles lens B (2) are the same, the goggles lens A (1) is positioned in the front of the goggles lens B (2), the goggles lens A (1) is an outer layer lens, and the goggles lens B (2) is an inner layer lens; a cavity (6) with a certain gap is formed between the goggles lens A (1) and the goggles lens B (2), the cavity (6) is in a completely sealed state, and the goggles lens A (1) and the goggles lens B (2) form a goggles lens group with a multilayer hollow structure together; both ends position of goggles picture frame (4) rear side respectively with the both ends fixed connection of elasticity bandeau (3), the soft cotton pad (7) of the inboard fixedly connected with rectangular shape of centre department of elasticity bandeau (3), the position of the top both sides edge of goggles picture frame (4), respectively fixedly connected with a columniform breather valve (5), breather valve (5) are located the position at the goggles lens group rear that goggles lens A (1) and goggles lens B (2) are constituteed.

2. The multilayer lens anti-fog eyewear of claim 1 wherein: the nose pad at the lower part of the middle of the goggle frame (4) is of an arc structure.