EP3906796B1 - Filtering visor - Google Patents

Description

The present invention relates to a device for protecting people in the event of a pandemic or in everyday life in a hospital environment.

Protection is done today by two principles: either with the help of a fabric mask

type surgery, FFP2 or FFP3, the eyes remaining however unprotected, the latter only protects the nose and mouth. Either by a visor-type protection, which protects against the projection of droplets, but which is ineffective for particles or viruses in suspension in the air. To date it is possible to wear both devices at the same time, but this represents several disadvantages. The document US 2011/265236 A1 discloses a device comprising a headband on which a window is fixed using pawns.

The device according to the invention overcomes these drawbacks. Indeed, it comprises as a first characteristic a protective visor composed of a headband (1) on which is fixed a window (2) using pins (3). On this window and this headband, is fixed a filter element (11) in the upper and lower parts and sides. The headband contains four stops: two stops (6) and two stops (7) and (10) which accommodate the elastics placed in the rear and front hems respectively of the filtering fabric. The window (2) contains a chute in which is housed the elastic contained in the hem of the filter fabric (11). The window (2) is curved in the lower part in order to align the channel (9) and the abutment (10) of the headband and thus ensure perfect maintenance of the filtering fabric (11) on the assembly. The elastics (8) contained in the hem of the filtering fabric (11) form a double arc of a circle, which ensures a perfect adaptation to the face. The upper part (5) is covered by the filtering fabric, thus ensuring better oxygenation of the helmet and eliminating the fogging effect.

As a second characteristic: a specific attachment system for attaching the headband, allowing the filtering fabric to be attached to it if the filter fabric is not used.

As a third characteristic: a system for fixing the glass on the headband by pins (obtained by thermoforming) in order to come as a pressure system, fixing the glass on the headband quickly and efficiently

Thus the user is protected on the whole face while keeping a face "clear" for the view and without "suffocating" effect of the mask. The invention will also allow him to keep a pair of glasses under the device (allowing him to continue working), his clear face will allow the control of the police during confinement, the deaf and dumb, in addition to language signs will be able to understand each other, young children will continue their learning by mimicry.

Finally, there remains an indisputable barrier gesture to avoid bringing your hands to your face by reflex, especially for children and people with disabilities.

State: The invention consists of 4 parts

A headband

Glass

A filter cloth

An elastic holding the set on the face

According to a preferred embodiment, a “standard” fabric filter is fixed by an elastic contained in its hem to the window of the visor as well as to the headband of the same visor.

The same elastic, contained in the opposite hem, is fixed at the top on the front part of the headband and at the bottom part under the chin. It thus ensures perfect contact on the skin causing a seal between the visor and the outside air.

The window itself is fixed by a system of pins on the headband (pressure obtained by thermoforming).

According to another preferred embodiment of the invention, the filter fabric could be attached to the elastic of the headband provided for this purpose.

According to specific manufacturing methods:

The filter cloth can be made of different materials. The Afnor SPEC S76-001 standard will be used at a minimum and it can be applied up to the medical standard. It can be printed in different ways to personalize the visor (schools or group recognition).

The glass can be declined in different shapes, with different colors. The stops for holding the elastic of the filtering fabric on the headband can be wider or placed in other places depending on the needs (child or adult model).

• La [fig.1] représente une vue en perspective de l'ensemble de l'invention;
• La [fig.2] représente les détails du serre-tête qui permettent la fixation haute du tissus filtrant;
• La [fig.3] représente la goulotte effectuée sur la vitre;
• La [fig.4] représente l'élément filtrant sur l'ensemble;
• La [fig.5] représente le serre-tête dans son ensemble avec un exemple de tissu;
• La [fig.6] représente l'élastique de maintien du serre-tête sur le crâne;

The accompanying drawings illustrate the invention:

• There [ fig.1 ] shows a perspective view of the entire invention;
• There [ fig.2 ] represents the details of the headband that allow the high attachment of the filtering fabric;
• There [ fig.3 ] represents the trough made on the glass;
• There [ fig.4 ] represents the filter element on the assembly;
• There [ fig.5 ] shows the headband as a whole with an example of fabric;
• There [ fig.6 ] represents the elastic holding the headband on the skull;

There [ fig.1 ] represents the invention as a whole. Referring to the drawing, it will be seen that the device (1) represents the headband on which the glass (2) and the rubber bands (8) of the filtering element. The element (1) has the same curvature as the window element (2) and the latter are connected by the pins (3) in the male part on the headband (1) and female on the window (2). The stopper (6) prevents the elastic from coming back forwards and therefore ensures a good connection between the filtering fabric and the skin. A stop (7) on the front face of the visor in the upper part ensures the maintenance and the tension of the filter assembly.

[ fig.2 ] The stopper (10) ensures a perfect connection between the filter cloth, the headband (1) and the glass (2).

[ fig.3 ] The element (2) called glass has a chute (9) on its left, lower and right parts in order to receive the rubber bands (8) of the filter element. This chute seals the outside air. The stopper (6) allows the fabric not to come back to the front and to remain in contact with the skin on the side of the face. This stop (6) can be moved forward or backward depending on specific size requests.

[ fig.4 ] The opening of the upper part (5) ensures by deformation that the visor assembly can adapt to any type of head circumference. Covered with the filtering fabric, the air will be able to circulate freely and thus avoid the effects of fogging.

[ fig.5 ] represents the invention as a whole with a simulation of a fabric placed on it.

[ fig.6 ] the elastic holding the headband on the skull is provided with hooked pins (12) in order to be able to attach a surgical type mask or a different filtering fabric (which can cover the ears for example). This elastic (13) will be fixed on the leg (4) of the headband (1).

• en polypropylène recyclé noir, destiné au public en contact obligatoire avec la population;
• en polypropylène orange pour les EPI destinés aux entreprises;
• en bleu avec un grade médical pour l'ensemble du corps médical.

More generally, part (1) will be injection molded and available in 3 categories represented by 3 colors tinted in the mass:

• in black recycled polypropylene, intended for the public in obligatory contact with the population;
• in orange polypropylene for PPE intended for companies;
• in blue with a medical grade for the entire medical profession.

To each of these categories will adapt a filter fabric (11) to the height of the need.

According to a variant not shown, the window (2) may have several shapes and several colors.

By way of non-limiting example, the visor as a whole will have a minimum size of 17 cm wide, 21 cm high and 19 cm deep.

Claims (5)

1. Device for the safety of persons by continuous air filtration on the periphery of the face, comprising a headband (1) on which a window (2) is attached by means of pins (3), the device being characterised in that a filter fabric (11) is attached on the window and the headband at the top, bottom and sides, the headband contains two stops (6) which accommodate a rear elastic placed in a rear hem of the filter fabric and two stops (10) and (7) which accommodate a front elastic placed in a front hem of the filter fabric, the window (2) contains a channel in which the elastics contained in the hem of the filter fabric (11) are accommodated.
2. The device according to claim 1, characterised in that the window(2) is curved at the bottom in order to align the spout (9) and the stop (10) of the head clamp and thus ensure that the filtering fabric (11) is held perfectly in place on the assembly.
3. The device according to claim 1, characterised in that the elastics (8) contained in the hem of the filtering fabric (11) form a double arc of a circle, which ensures a perfect fit on the face.
4. The device according to claim 1, characterised in that the headband is provided with male pins (3) which fit into the window provided with female pins (3), which ensures easy replacement of the window.
5. The device according to claim 1, characterised in that the upper part (5) is covered by the filter fabric, thus ensuring better oxygenation of the helmet and eliminating the fogging effect.

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