JP2020116139A - Face mask for work - Google Patents

Abstract

To provide a face mask for work being used in painting work or the like, comprising a goggle part for protecting eyes of a user and having a simplified structure added thereto, for suppressing a lens surface of the goggle part from getting fogged.SOLUTION: A face mask for work is configured so that a goggle part 1 comprising on a front surface, a lens surface 11 and being worn in a tightly closed state, and a mask part 2 for covering in a tightly closed state, a nose part and a mouth part, are coupled in a state of maintaining the tightly closed state of them for integrating the goggle part and the mask part, and to the face mask for work, a head part attachment member (head band 3) is added. The mask part comprises: an air intake part 24 formed of a filter part comprising a check valve of air intake actuation; and an exhalation part 25 having a check valve of exhalation actuation. Between the goggle part 1 and the mask part 2, a vent part 26 formed of a check valve for blocking a ventilation direction to the goggle pat is provided.SELECTED DRAWING: Figure 1

Description

The present invention relates to a work face mask used for painting work and the like.

The face mask, which prevents the inhalation of dust during breathing during work and protects the eyes, has a transparent front surface (lens surface) that does not obstruct vision, and the filter part for removing dust during inhalation during breathing is used. Is what you are doing. Further, since the work is hindered when the lens surface is fogged, these face masks are provided with a fog prevention mechanism (Patent Documents 1 and 2).

For example, a face mask in which a goggle part and a mask part are combined (Patent Document 1), or a face mask in which a breathing mask part is provided inside a transparent face protection part (=goggle part) that covers the entire face (Patent Document 2) In (1), inhalation at the time of breathing passes through the goggle part so that fresh outside air is always introduced into the goggle part to realize anti-fog on the lens surface.

That is, inhalation during breathing passes through an attached or attached filter section and enters the goggle section, enters the mask section from the goggle section through the check valve, and becomes inhalation for the mask wearer there. Exhaled air is directly emitted from the mask portion to the outside air via the check valve.

JP-A-59-156356. Japanese Patent Laid-Open No. 2007-20675.

The above-described conventional face mask has a structure in which inhalation during breathing temporarily passes through the goggle portion, and thus, like the work face mask shown in Patent Document 1, a dustproof filter portion is attached to the goggle portion. In such a face mask, it is necessary to separately provide a filter portion at a position behind the head or the like and connect the goggles portion with a ventilation pipe, and the filter portion becomes an obstacle for an operator when wearing the mask or when working.

Further, in the face mask in which the filter portion is attached to the face protection portion (=goggles portion) that covers the entire face like the work face mask disclosed in Patent Document 2, the entire mask has a multi-layered structure and is bulky. Will end up.

Therefore, the present invention proposes a work face mask which is small in size and has a simple structure having an antifogging function for the lens surface.

The work face mask according to claim 1 of the present invention has a hermetically sealed state in which a goggle portion having a lens surface on the front surface and mounted in a hermetically sealed state, and a mask portion which hermetically covers the nose portion and the mouth portion are sealed. In addition to being integrally formed in a state of being maintained, a head mounting member is additionally provided, and the mask section is provided with an intake section consisting of a filter section having an intake-action check valve and an exhalation-action check valve. An expiratory part is provided, and a ventilation part including a check valve for blocking the ventilation direction to the goggle part is provided between the goggle part and the mask part.

Thus, this mask is used for work in a dust environment such as painting work. When the head mounting member is mounted on the worker's head, the face of the worker is covered with the goggles and the mask. Therefore, the worker's breath is made through the inspiratory part and expiratory part provided in the mask part, the suction of dust is blocked by the filter part, and the eye is protected by the goggle part.

Anti-fog on the lens surface of the goggles of this mask is achieved by ventilation of the ventilation part. The inside of the mask part and the inside of the goggles part basically match the atmospheric pressure, but the air pressure inside the mask part slightly changes due to breathing. That is, the pressure in the mask portion decreases during inspiration, and the pressure in the mask portion increases during expiration. Therefore, when the outside air enters the mask by inhalation, the pressure in the mask part decreases and the ventilation part opens, and the exhalation with high humidity increases the pressure in the mask part and closes the ventilation part, so the ventilation part opens at the moment of inhalation. Then, the air inside the goggles is slightly replaced. The air in the goggles is replaced little by little to prevent the lens surface from becoming cloudy.

The work face mask according to claim 2 of the present invention is, in particular, the goggle part covering the upper part of the face in the mask and the triangular mask part, in the central lower part of the goggle part, the triangular part of the mask part. By connecting the apex part in the invaded state and providing the ventilation part at the invasion part, the whole is compact, the position of the ventilation part is also in the center of the goggle part and the ventilation inside the goggle part is efficient. Be seen.

The working face mask according to claims 3 and 4 of the present invention is a single-lens type in which the goggle portion is formed by one lens surface, and is a spectacle type in which the goggle portion is formed by two lens surfaces, and is divided into two parts. A ventilation part is provided between the inner space of the goggle part, which is applied regardless of the mode of the goggle part.

Further, in the work face mask according to claim 5 of the present invention, since the inspiratory portion is provided on the front surface of the mask portion and the expiratory portion is provided below the inspiratory portion, the ventilation inlet/outlet portions are arranged vertically above and below the mask. Therefore, the ventilation to the inside of the goggles in the ventilation part flows smoothly.

The configuration of the present invention is as described above, and it is possible to realize the miniaturization of the work face mask including the goggle portion having the antifogging function.

Explanatory drawing of embodiment of this invention (front view of a use condition). The same figure (rear view). Explanatory drawing of the same air circulation. FIG. The front view of the another example.

Next, an embodiment of the present invention will be described. The work face mask shown in the embodiment includes a goggle portion 1, a mask portion 2, and a headband (head mounting member) 3.

The goggle portion 1 has a shape that covers an upper portion of the face A, has a lens surface 11 on the front surface, and the peripheral portion 12 is a lens frame, and an abutting surface 13 that comes into close contact with the face is made of a cushion material as appropriate.

The mask portion 2 has a triangular shape that covers the nose and mouth in a hermetically sealed state, the front surface portion 21 is formed of a rubber material (hard), and the peripheral back surface portion 22 is folded inward to ensure the flexibility and the face. To be in close contact with.

The mask part 2 is connected to the lower part of the center of the goggle part 1 with the triangular top part 23 of the mask part 2 invading, and the goggle part 1 and the mask part 2 are attached to the face using the headband 3. At this time, the goggle portion 1 and the mask portion 2 are formed in a sealed state.

Further, the mask portion 2 is provided with an inspiratory portion 24, an expiratory portion 25, and a vent portion 26. The inspiratory portion 24 is in front of the mask portion 2, the expiratory portion 25 is below the inspiratory portion 24, and the vent portion 26 is in the triangular top portion 23. It is provided.

The intake part 24 allows the passage of outside air to the mask part 2 and prevents the invasion of dust from the outside air into the mask part 2 and a check valve for preventing passage from the mask part 2 to the outside air. It has a filter section. The exhalation unit 25 is formed of a check valve that allows passage from the inside of the mask unit 2 to the outside air and blocks passage from the outside air to the mask unit 2.

The ventilation part 26 is provided on the triangular top part 23 of the mask part 2 protruding and intruding into the goggle part 1. The ventilation part 26 is a check valve for blocking/passing the ventilation between the goggle part 1 and the mask part 2, The inside of the mask 2 is closed when the atmospheric pressure is higher than the inside of the goggles 1, and the inside of the mask 2 is opened when the atmospheric pressure is lower than the inside of the goggles 1.

Thus, this mask is used for work in a dust environment such as painting work, and the face A is covered with the integrated goggle part 1 and the mask part 2 and the headband 3 is tightened. Also, the mask portion 2 is attached so as to be in close contact with the face.

When the mask is worn on the face A, the breathing of the worker is such that the outside air enters the mask portion from the inspiratory portion 24 and is released from the expiratory portion 25, and dust is blocked by the filter of the inspiratory portion 24 during inhalation. The goggles 1 protect the eyes.

In particular, the anti-fog on the lens surface 11 of the goggle portion 1 is realized by the ventilation of the ventilation portion 26 due to the pressure fluctuation in the mask portion 2 during breathing.

During inspiration, the pressure in the mask portion 2 decreases, and during exhalation, the pressure in the mask portion 2 increases, so that the ventilation portion 26 opens during inspiration and closes during expiration. The ventilation part 26 is opened for a slight time during the intake, and the air in the goggle part 1 is slightly replaced with the outside air that has passed through the intake part 24. That is, the air in the goggles is replaced little by little with the dust-removed outside air with each breathing, the humidity in the goggles 1 is prevented from increasing, and the lens surface 11 is not clouded.

Further, the present invention is not limited to the above-described embodiment, and may be applied to a work face mask that employs the spectacle-type goggle portion 1a in which the lens surfaces 11a are juxtaposed and the space inside the goggle portion is divided into two as shown in FIG. Applicable.

In that case, a ventilation part 26 may be provided between each of the two goggle part spaces and the inside of the mask part 2.

As described above, the present invention can provide an antifogging function with a simple structure to a simple and small work mask composed of the goggles 1 and the mask 2.

1,1a Goggles 11, 11a Lens surface 12 Peripheral part 13 Contact surface 2 Mask part 21 Front part 22 Perimeter back part 23 Triangular top 24 Inhalation part 25 Exhalation part 26 Ventilation part 3 Headband (head mounting member)

The work face mask according to claim 1 of the present invention has a hermetically sealed state in which a goggle portion having a lens surface on the front surface and mounted in a hermetically sealed state, and a mask portion which hermetically covers the nose portion and the mouth portion are sealed. In addition to being integrally formed in a state of being maintained, a head mounting member is additionally provided, and the mask section is provided with an intake section consisting of a filter section having an intake-action check valve and an exhalation-action check valve. An expiratory part is provided, and between the goggle part and the mask part, a vent part consisting of a check valve that opens when the pressure inside the mask part decreases during inhalation when the mask is worn and closes when the pressure inside the mask part increases during exhalation is provided. It is characterized by becoming.

Claims (5)

A goggle part that has a lens surface on the front surface and is mounted in a sealed state, and a mask part that covers the nose part and the mouth part in a sealed state are integrally formed by connecting them while maintaining a sealed state, respectively. An attachment member is additionally provided, and the mask section is provided with an inspiratory section comprising a filter section having an inspiratory check valve and an expiratory section having an expiratory check valve, and the goggles are provided between the goggle section and the mask section. A work face mask, characterized in that it is provided with a ventilation part comprising a check valve for blocking the direction of ventilation to the part. In a triangular mask portion and a goggle portion that covers the upper part of the face, the triangular vertex portion of the mask portion is connected to the lower central portion of the goggle portion, and the ventilation portion is provided at the intruding portion. Item 1. A work face mask according to item 1. The work face mask according to claim 2, wherein the goggle portion is a single lens type having one lens surface. The work face mask according to claim 2, wherein the goggle portion is a spectacle type having two lens surfaces, and a ventilation portion is provided between each of the two inner spaces of the goggle portion. 5. The work face mask according to claim 2, wherein an inspiratory portion is provided on the front surface of the mask portion and an expiratory portion is provided below the inspiratory portion.