JPH08266651A - Simple mask - Google Patents

Abstract

PURPOSE: To protect eyes and the respiratory organs with a simple structure by sticking a gas permeable foaming body inside which active carbon is dispersively arranged to one surface of the whole peripheral edge of an almost flat thin transparent plate of a rectangle or the like by leaving a position corresponding to eyes and a nose. CONSTITUTION: For example, an active carbon sponge 2 is stuck to the outer peripheral edge of an elliptic or rectangular transparent plate 1. At this time, it is not stuck to a position corresponding to a part of eyes and a nose. A nose part corresponding position 4 is projected to the opposite side of the activated charcoal sponge 2, and a buffle plate 3 is arranged in a nose hole corresponding position, and a short circuit at outside air inflow time may be prevented. Strings 5 are installed, and are fixed to a head part. Therefore, the active carbon sponge 2 is brought into close contact with the face, and is installed so as to slightly leave a ventilating space around a nose. When a thickness of the active carbon sponge 2 is set in about 10mm and a width is set in about 20mm, passing flow speed of air becomes about 10 to 20mm per second, and smoke or the like can be adsorbed and removed satisfactorily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention protects respiratory organs, eyes, etc. from pollen, dust, etc., as well as a simple gas mask used when passing through toxic gas, smoke caused by fire, and toxic gas. The present invention relates to a simple mask such as an air filtration mask.

[0002]

2. Description of the Related Art Conventional gas masks and simple masks have a filter placed in front of the nose and mouth to inhale filtered air.

[0003]

[Problems to be solved by the invention] When wearing a conventional mask that covers the nose, mouth, and eyes, the moisture in the mask increases due to breathing, and the glass plate in front of the mask becomes cloudy. The case of the filter was protruding to the front of the and it was heavy.
In the simple type that covers only the nose and mouth, the eyes were damaged by smoke, dust, and other gases. An object of the present invention is to obtain a gas mask that protects the eyes and respiratory system with a simple structure.

[0004]

A breathable foam having activated carbon dispersed therein, that is, sponge-like activated carbon is produced by Kuraray Co., Ltd. as a product obtained by impregnating urethane foam with activated carbon. The sponge-like activated carbon has a small specific gravity and is light, has a high gas adsorption performance, has a small ventilation resistance, and has a good cushioning property when compressed as a sponge. Such a sponge-like activated carbon sheet is attached to one side of the entire peripheral edge of a substantially flat and thin transparent plate such as a rectangle or an oval, leaving a portion corresponding to the eyes and nose. Further, even when activated carbon is not necessary, a filter for trapping fine particles is also adhered to one side of the peripheral portion.

[0005]

The operation of the mask of the present invention is illustrated in FIG. For example, a thickness of 10 to 10 is attached to the entire periphery of the thin transparent plate 1.
The activated carbon sponge 2 having a width of 20 mm and a width of 20 to 25 mm bends along the face, and the sponge 2 is deformed or slightly corresponding to slight irregularities so that the mask adheres to the face and the inside of the mask is shielded from the outside. When the air is sucked from the nose, the outside air flows into the internal space through the activated carbon sponge 2 at the entire peripheral portion, and the exhaust air is discharged into the outside air from the mouth. The same applies to the case where the fine particle capturing filter is adhered to the entire peripheral edge.

[0006]

The total length of the activated carbon sponge 2 adhered to the outer peripheral edge of the transparent plate 1 is about 500 mm, and the outside air flows at a low flow velocity through almost the entire length, so that the activated carbon layer has a sufficient adsorption capacity. Exert. Also in the case of a filter for trapping fine particles which is not activated carbon, air flows in at a low speed from the entire periphery, and the filter works effectively. If the mouth is taken out of the mask and exhausted from the mouth, the outside air is always filtered and flows into the inside of the mask, so that the transparent plate 1 does not dew and does not become cloudy. With your mouth outside the mask, you can speak freely, seek help, or guide others. Production cost is low due to the simple structure.

[0007]

1 and 2 show an embodiment in which an activated carbon sponge 2 is attached to the outer peripheral edge of an oval transparent plate 1.
FIGS. 3 and 4 show that the activated carbon sponge 2 is attached to the outer peripheral edge of the substantially rectangular transparent plate 1, the nose part corresponding position 4 is projected to the opposite side of the activated carbon sponge 2, and the outside air flows into the position corresponding to the nostril. 2 is provided with a baffle plate 3 for preventing a short circuit at the time.
Shows a side view of FIG. 1, and FIG. 4 shows a side view of FIG. As shown in FIG. 5, the wearing state of the present simple gas mask is fixed to the head by using the string 5. FIG. 6 is a cross-sectional view of the center of the front of the wearing state, in which the activated carbon sponges 2 and 2 are in close contact with the face, leaving a ventilation space slightly around the nose. The baffle plate 3 prevents the outside air from short-circuiting in the portion near the nostrils. Activated carbon sponge thickness 1
When the width is 0 mm and the width is 20 mm, the flow velocity of air is 10 to 20 mm / sec, and smoke and gas can be sufficiently adsorbed and removed. The inside of the mask does not become cloudy due to breathing. The present invention also includes smoke, dust, other than toxic gases,
For filtration and inhalation of air containing fine particles, pollen, etc., a filter material having a fine ventilation channel, for example, open cell sponge, non-woven fabric, etc., is adhered to the peripheral portion of the transparent plate alone or in combination with an activated carbon sheet or the like. use. Especially for pollen,
With the conventional mask, the throat and the trachea, etc. are only protected, and since the eyes are unprotected, it is necessary to use special protective glasses, but according to the present invention, both the respiratory organs and the eyes are protected. it can.

[0008]

[Brief description of drawings]

FIG. 1 is a front view illustrating an embodiment of the present invention.

FIG. 2 is a side sectional view of the same as above.

FIG. 3 is a front view for explaining another embodiment of the present invention.

FIG. 4 is a side sectional view of the same as above.

FIG. 5 is a mounting view of the gas mask of the present invention.

FIG. 6 is a side sectional view of the same as above.

[Explanation of symbols]

 1 Transparent plate 2 Activated carbon sponge or breathable filter 3 Baffle plate 4 Protrusion at nose position 5 String

Claims (4)

[Claims] 1. A breathable foam sheet having activated carbon dispersed therein is provided on one side of the entire periphery of a transparent plate having a size that covers at least the eyes and nose of the face and its surroundings, at a position corresponding to the eyes and nose. A simple mask that is attached by leaving. 2. The simple mask according to claim 1, wherein a position corresponding to the nose of the transparent plate is formed so as to project to the side opposite to the surface where the breathable foam sheet is attached. 3. A simple mask in which a breathable filter is adhered to one surface of the entire peripheral edge of a transparent plate having a size that covers at least the eyes and nose of the face and its periphery, leaving a portion corresponding to the eye and nose. . 4. The simple mask according to claim 3, wherein a breathable activated carbon layer is attached to a breathable portion of the breathable filter.