JPH0745228Y2 - Direct blower dustproof / gasproof hood type mask - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a respiratory protection device, particularly a dust / gas mask. Specifically, it relates to protective equipment that solves the problems of full-face type dust and gas masks.

2. Description of the Related Art Conventionally, a full-face mask has been generally used in a work environment where harmful dust or toxic gas is used. However, this full-face mask has ventilation resistance during breathing, heat accumulation, sweat condensation, and eyeglasses. Since there are various problems that wearers are unsuitable, in order to solve these problems, we applied for a full-face type dust-proof and gas-proof mask with blower first (Actual exploitation 62
However, in the case of a spectacle wearer, the vine of the spectacle interferes with the fact that the face-contact part cannot be brought into close contact with the face, and there is a drawback that an air leak occurs due to a void in the vine part. is there.

Further, since the neck, ears, head and the like remain exposed to the harmful environment, a means for attaching a hood covering the neck, ears and head has been required in order to prevent skin contamination.

Problems to be Solved by the Invention As described in the above-mentioned conventional technique, in the case of a dust-proof with a blower of a full-face type, a gas mask, in the case of a spectacle wearer, the vine interferes with air leakage, and in a harmful environment, the neck, Since the ears and the head are exposed to harmful outside air and cause skin contamination, there is an inconvenience that means for wearing a hood must be taken as a protective measure.

Therefore, in order to solve this inconvenience, this invention eliminates the fear of outside air leakage even if the eyeglass wearer uses the mask while wearing the eyeglasses, and the head, neck, and ears are not affected even in a harmful environment. The purpose is to provide protective equipment that is not exposed.

Means for Solving the Problems As a means for achieving the above object, the present invention has a half-face mask directly connected to a blower with a filter, a transparent eyeglass, and an opening communicating with the intake port of the blower with a filter. A direct blower dust-proof / gas-proof hood-type mask that has a cylindrical bag part that has a blower with a filter and has a hood with rubber that squeezes the neck part. is there.

Operation According to the above-mentioned device, air is sucked by the blower with a filter from the opening at the tip of the cylindrical bag, and the air purified by the filter is forcibly blown into the half-face mask, so that comfortable breathing can be performed. Since the neck is squeezed with a rubber cord, the outlet of the air is restricted, the air spreads in the hood, and the hood has a positive pressure. Then, since the air is exhausted from the hem of the hood through the gap in the neck, heat and sweat are not accumulated. If the blower's air volume is more than twice the breathing volume, a proper positive pressure is maintained in the hood, and there is no backflow of pollutants, which is safe. Further, since the devised device comprises the half-face mask and the hood, the spectacle wearer can wear the spectacle wearer while wearing his / her own spectacles, and there is no adverse effect such as pressure on the spectacles by the hood. In addition, the non-breathable hood prevents contamination of the neck, ears, and head.

If the material of the hood is appropriately selected, a disposable hood, that is, a replaceable hood type mask, which is excellent in terms of cost and effectiveness, can be obtained.

Embodiments The present invention will be described with reference to the embodiments shown in the drawings.
Is a half-face mask in which a blower 3 with a filter 2 is directly connected, and is attached to the face with a tightening cord 4.

Reference numeral 6 is a hood provided with a transparent eye glass 7, the neck portion is squeezed with an elastic cord 8, and a velvet fastener for hanging is attached to the back side of the hem of the hood 6 although not shown.

The eye glass 7 has a function of a tension frame, and a hood portion below the eye glass 7 has an opening 11 communicating with an intake port of the blower at a tip thereof, and has a stretchable cylindrical bag portion 10 for enclosing the blower 3 and the filter 2. The blower 3 with the filter 2 is housed therein, and the blower 3 supports the part of the eye glass 7 apart from the face forward. Blower 3
Is connected to the power source in the battery case 8 via the wiring 9.

Here, the order of mounting will be described. First, as shown in FIG. 2, the direct blower-equipped half-face mask 1 is mounted on the head with the tightening cord 4. Next, the hood 6 is put on the head, and the blower 3 and the filter portion of the half-face mask 1 are fitted to the cylindrical bag portion 10 provided on the front surface of the hood 6, and the intake port of the blower 3 is attached to the cylindrical bag portion 10. It is connected to the opening, and the eyeglass 7 part is stretched forward from the face to support it, the neck part is squeezed by the rubber cord 8 to reduce the gap with the neck, then the hem of the hood 6 is expanded and the velvet fastener. Stop.

The blower 3 is rotated by closing the switch of the battery case 8 so that the purified air is forcedly blown into the half-face mask 1 via the filter 2. Although the air flow rate in the example is 80 l / min, the breathing rate is usually about 30 l / min, and since the exhaled air is also discharged into the hood 6, a sufficient positive pressure is generated in the hood, and the outside air is evacuated into the hood 6. The transparent eyeglass 7 does not fog.

If the hood 6 is made of a material having excellent chemical resistance and high mechanical strength, it can be repeatedly used several times by removing contaminants. If it is made of thin and inexpensive fabric, it can be used as a one-time disposable hood.

Effect of the Invention According to this device, the air purified by the filter is forcibly blown into the half-face mask by the operation of the blower, so breathing is extremely easy and the exhaled air is discharged into the hood, but Since there is a large amount of air, the air in the hood constantly flows and is discharged from the hem of the hood through the neck, so there is no concern that the amount of carbon dioxide gas will increase and that the transparency of the eyeglass will be adversely affected. Also, there is no accumulation of sweat and there is no backflow of outside air because there is always positive pressure inside the hood, so it is also highly safe. In addition, since there is room between the hood and the face and head, the eyeglass wearer will not shift the glasses due to the pressure of the hood and the focus will not be disturbed, and the annoyance will not be felt. It was especially convenient for the people. In addition, since the material of the hood is non-breathable, there is no invasion of gaseous and particulate contaminants, and it is possible to prevent contamination of the neck, ears, and head. In terms of safety, it is convenient because it can be used more advantageously than a hood that is used repeatedly.

In addition, in the case of the device of the present invention, when the blower does not work due to battery exhaustion or some other reason, purified air enters through the filter, blower, and exhalation valve by normal breathing (the same function as a normal half-face mask). Therefore, there is an advantage that safe breathing can be secured even in a polluted environment.

As described above, the device of the present invention is superior in safety, operability, protective property, and economical efficiency in comparison with a full-face type mask, and has an effect of being a particularly useful protective device especially for spectacle wearers.

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention. FIG. 1 is a side view showing a wearing state of the device of the present invention, and FIG. 2 is a half-face mask mounted and a hood is attached. Side view if not, No. 3
The figure is a cross-sectional view of the hood. 1 ... Half-face mask, 2 ... Filter, 3 ... Blower, 4 ... Tightening string, 5 ... Exhaust valve, 6 ... Hood, 7 ...
Eye glass, 8 ... Battery case, 9 ... Wiring, 10 ... Cylindrical bag part, 11 ... Opening.

Claims (1)

[Scope of utility model registration request] 1. A circle having a half-face mask directly connected to a blower with a filter and a transparent eye glass, and having an opening at the tip which communicates with an intake port of the blower with a filter and enclosing the blower with a filter. With a body bag,
A direct blower dust-proof / gas-proof hood-type mask that is characterized by combining it with a hood that has a rubber that squeezes the neck.