FR3017931A1 - DEVICE FOR VENTILATION OF AT LEAST ONE TRANSPARENT SURFACE PROTECTING AT LEAST ONE EYE, AND PROTECTIVE ASSEMBLY - Google Patents

Abstract

The present invention relates to a ventilation device (10) comprising a pipe (15) extending from a proximal end portion (16) connected to a closed casing (20) for generating filtered air to at least a portion distal end (17) provided with perforations (18) adapted to be directed towards a transparent surface (3), said housing (20) comprising an envelope (25) delimiting an internal space (INT), said envelope (25) being provided with a filter (30) fluidly communicating said internal space (INT) and an external medium (EXT) to the housing (20), said housing (20) having in said housing (25) a fluid displacement system ( 40) opening onto said pipe (15) for conveying filtered air to said perforations (18), said ventilation device (10) comprising a fastening system (50) for reversibly attaching said proximal end portion (16) to a transparent protective device ( 2).

Description

Device for ventilating at least one transparent surface protecting at least one eye, and protection assembly. The present invention relates to a ventilation device of at least one transparent surface protecting at least one eye, and a protection assembly comprising this ventilation device and such a transparent surface to protect the eyes of an individual, including a staff workshop. The technical field of the invention is the field of protection of the eyes of an individual against debris resulting from the manufacture of objects.

The term "glasses" refers to a rigid object with an armature bearing two transparent surfaces, each transparent surface protecting an eye of the same individual without hindering his vision. A "mask" is a rigid object with an armature bearing a transparent surface protecting the two eyes of an individual.

Such a transparent surface is usually called "glass" although not required obtained from a glass material. The frame is also called classically "mount". Subsequently and for convenience, a transparent protective device is a device that can be either a pair of glasses or a mask. Certain operations carried out in a workshop, such as a vehicle manufacturing workshop, can generate debris projections to the eyes of an individual. Debris is understood to mean fine dust as well as large pieces of material. In particular, a sanding operation of aeronautical materials can be generating irritating dusts for the eyes. In particular, the sanding of a piece of composite materials can generate very fine and very irritating dusts, such as carbon fiber dust for example Therefore, the use of goggles or a mask may be required. However, the temperature and humidity prevailing in a workshop can notably induce the creation of steam. This mist is conventionally deposited on the inner face of a transparent protective device, namely the inner face of the device facing the eyes of the individual wearing them. This mist obscures the field of vision of the individual. Therefore, some operators sometimes have a tendency to not wear the transparent protective devices required. This attitude can lead to accidents at work, following an impact of debris of all kinds on unprotected eyes. Remote technical fields of the invention provide devices for ventilating transparent protective devices, particularly in the field of sports equipment.

Thus, masks adapted for skiers can provide scoops. The movement of the individual wearing the mask can induce the flow of air through the scoops. Indeed, athletes and especially skiers are moving. On the contrary, a workshop operator remains substantially in a static position. In addition, such an operator may be faced with very fine dust, which is not the case of a skier for example.

The working conditions and the problematic faced by an operator sanding composite materials are thus far removed from the considerations of an athlete. US 3,825,953 is located in a field remote from the technical field of the invention. This document US 3825953 proposes indeed an anti-fog mask for a skier. The mask has a frame with a transparent surface. Thus, the transparent surface has projections inserted into slots of the frame. In addition, the frame carries a fan. This fan is connected by a wired connection to a remote battery. As a result, the fan induces the flow of air from the outside of the mask to an internal space between the mask and the face of a skier. The presence of the fan close to the user's forehead may possibly induce annoyances in terms of noise and / or vibrations. In addition, this mask seems difficult to transpose to use in a workshop. The fan may move air polluted by debris in said internal space given the specificities of the field of the invention. In addition, this document presents a complete device including the mask and its ventilation device. This device is not adaptable to existing glasses. GB 246 249 is also far from the scope of the invention relating to spectacles combined with an oxygen mask attached to a helmet.

GB 2,330,916 discloses an assembly comprising a frame carrying a transparent surface of a mask. In addition, this assembly includes a ventilation system equipped with a nylon tube leading to two elastic rubber tubes through a Y-fork. Each rubber tube communicates with an air tube attached to the tube. glasses frame by molded loops in this frame. Rubber tubes also have the function of holding the glasses on the head of a user by forming an elastic hoop. This document GB 2,330,916 presents a complete device including the mask and its ventilation device. This device is not adaptable to existing glasses.

The present invention therefore aims to provide a ventilation device that can be arranged on glasses or masks known, and being able to protect a workshop operator against the projection of debris to his eyes. The invention therefore relates to a ventilation device for ventilating a transparent protective device comprising at least one surface transparent to light. This ventilation device comprises a pipe extending from a proximal end portion connected to a closed filtered air generation housing to at least a distal end portion provided with perforations adapted to be directed towards a transparent surface, the casing comprising an envelope delimiting an internal space, the casing being provided with a filter putting in fluid communication the internal space and a medium outside the casing, the casing comprising in the casing a fluid displacement system opening onto the casing; pipe for conveying filtered air to the perforations, the ventilation device comprising a fastening system for releasably attaching the proximal end portion to a transparent protective device. This ventilation device is not a device integrated into a protective device. This ventilation device can then be arranged on multiple protection devices, unlike an integrated system.

On the contrary, the ventilation device comprises an air conveying pipe which can be reversibly fixed to conventional glasses or masks by means of the fastening system. The ventilation device can therefore be arranged on transparent protective devices of all kinds relatively easily. The pipe may then for example be carried by a branch and / or a frame carrying at least one transparent surface. The distal portions are then arranged against the frame, taking care to direct the perforations to each transparent surface, for example. This pipe is pressurized by the fluid displacement system to induce fluid flow from inside the casing shell to the transparent surfaces through the pipe. This circulation induces forced ventilation by the fluid displacement system to defog glasses or a mask, or to prevent fogging. The length of each distal portion is sized to allow the flow of air flow along the transparent surfaces. The fluid displacement system may comprise a pump or a compressor for example.

Furthermore, the ventilation device comprises a filter allowing the outside air to be filtered before entering the internal space of the housing. The air transferred to the transparent surfaces is then filtered to at least limit the amount of irritating particles to the eyes in this air. As a result, when the fluid displacement system is in operation, this fluid displacement system induces the movement of polluted air from a workshop into the housing via the filter. The air present in the internal space of the housing is then filtered air.

This filtered air is then directed into the pipe by the fluid displacement system to vent glasses or a mask. The housing then makes it possible to inject filtered air into an environment presenting risks of eye accidents, following a large presence of very fine particles.

In addition, the fluid displacement system is offset in a housing that is not attached to an eyeglass frame or mask. This characteristic makes it possible not to weigh down in a consequent and unpleasant manner these glasses or this mask. In addition, the device moves air from the outside of the transparent protective device to this transparent protective device. Some known devices have conversely a fan built into a frame that extracts air from inside a mask to export it outside the mask. This arrangement can pose problems of pressure drop. The arrangement of the ventilation device according to the invention can tend to solve this problem. The ventilation device according to the invention then allows a workshop operator to keep without difficulty his glasses or his mask during a typical work session of two hours for example, without requiring a high amount of energy. The fluid displacement system may for example comprise an engine operating with a simple 1.5V AAA electric battery to cover said work session. This ventilation device may further include one or more of the following features. Thus, the fastening system may comprise at least one of the organs present in a list including: a removable adhesive material, a jumper, a wire, an elastic stapling means. For example, the removable adhesive material may be of the type used on self-adhesive and removable paper sheets that are assembled together. The internet network provides a description of this adhesive at the following address: http://fr.wikipedia.org/wiki/Post-it Furthermore, the fluid displacement system can be a pump of any type for routing a fluid from one place to another place. However, the fluid displacement system may comprise a piston movable in a cylinder opening on said pipe and a motor for translating said piston into said cylinder, a non-return valve being interposed between said perforations and said piston. The non-return valve is sized to allow fluid flow from the fluid displacement system to the perforations only. Thus, the fluid displacement system is not likely to suck air from the perforations. This arrangement makes it possible to obtain a relatively simple pump at a lower cost.

The non-return valve is then optionally interposed between an outlet of the cylinder and the pipe. On the other hand, the fluid displacement system may include an electrical generator arranged in the casing of the casing and connected to a motor of the fluid displacement system. Such an engine can be an electric motor moving a piston for example. This electric generator is a power supply means comprising for example a removable battery or an electrical energy accumulator. The electric generator may include conventional charging means. In addition, the housing may comprise a switch protruding from the casing of the casing towards the middle outside the casing, this switch being connected to the fluid displacement system, a sealing means being interposed between the switch and the casing. . An operator can use the switch to request or interrupt the operation of the ventilation device. Thus, the operator may for example require the operation of the ventilation device only during work phases generating the emission of irritating particles. Furthermore, the sealing means is intended to prevent the introduction of fine particles into the housing. The housing is thus impervious to fine particles, the filter preventing the penetration of these fine particles by the single opening of the housing. The housing may furthermore comprise a regulation control projecting from the envelope to the external environment, this control command being connected to the fluid displacement system to regulate the flow of air filtered through the pipe, a sealing system being interposed between the regulation control and the envelope. An operator may use the regulation command to adapt the filtered airflow to environmental conditions for example. In addition, the envelope may include an opening / sealing means for opening or closing the envelope manually. For example, an operator opens the housing to change a power supply battery of an electric motor. Furthermore, the filter may for example comprise a porous member, such as a paper having porosities of small dimensions. Furthermore, the housing may comprise a fixing means 15 for attachment to a garment, such as a belt for example. In addition, the pipe may comprise a flat elbow connection upstream of the perforations. The pipe can be attached to a classic branch of glasses. The angled flat fitting allows the pipe to be shaped at the junction area of the eyeglass arm to the armature bearing transparent surfaces. This shape tends to limit the discomfort induced by the presence of the pipe at the hinge between a branch and the frame. This flat connection may furthermore not interfere with the folding of the branch. In addition, the flat coupling tends to limit the risk of leakage at the temple of the operator, at a place where the pipe interferes with the spectacle frame. Such a flat connection, possibly supplemented by a flexible coating, therefore tends to prevent leakage and maintain an acceptable level of comfort. On the other hand, the pipe may be Y-shaped with two distal end portions provided with perforations and a proximal end portion. Such a pipe is particularly interesting to be adapted to glasses. The invention furthermore relates to a protection assembly provided with a transparent protective device, this transparent protection device having at least one transparent surface to the light carried by a frame. This assembly comprises a ventilation device of the type described above, the fixing system reversibly fixing each distal portion to the protection device. The invention and its advantages will appear in more detail in the following description with examples given by way of illustration with reference to the appended figures which represent: FIG. 1, a diagram of a protection assembly comprising: a ventilation device according to the invention, - Figure 2, a diagram having a flat connector arranged against a pair of glasses, the elements present in several separate figures are assigned a single reference. Figures 1 and 2 show a protection assembly 1 for protecting an operator in a workshop against projections of fine particles to his eyes.

This protection assembly 1 has a transparent protective device 2. The transparent protection device 2 comprises at least one transparent surface 3 to the light carried by a frame 4.

Thus, Figure 1 shows a transparent protective device 2 mask type while Figure 2 shows a pair of glasses. The transparent protective device is also provided with a connection means 5 to the head of an individual. The mask of FIG. 1 for example provides an elastic connection means, while the pair of spectacles of FIG. 2 comprises two branches 5 '. Independently of the embodiment and with reference to Figure 1, the protection assembly is provided with a removable ventilation device 10. This ventilation device is therefore not integrated with the transparent protection device, but can be partially fixed to this transparent protective device temporarily and reversibly by a fastening system 50. The ventilation device is more specifically provided with a housing 20 for generating filtered air under pressure. This casing 20 thus comprises an envelope 25 delimiting an internal space INT. For example, this casing 25 is provided with two walls 25 ', 25 "articulated to one another, These two walls can be connected to each other in a sealed manner by an opening / closing means 80 The closure means 80 may also comprise a seal disposed between two sets of the envelope, whereby the envelope defines an internal space INT closed and isolated from the external environment EXT when the opening / closing means 80 closes the envelope, however, this envelope may be opened if necessary to provide access to the internal space, in accordance with the representation of FIG. filter 30 putting in fluid communication the internal space INT and the external medium EXT to the housing 20. This filter 30 may be provided with a porous means 31 or known filtering means When the housing 20 is closed, the internal space can not suck air provena In this case, the housing accommodates a fluid displacement system 40 housed in the internal space, such as a pump or a compressor for example. This fluid displacement system can draw air from the internal space to expel it through an outlet 46 opening on a hollow air pipe. This hollow tube then extends along its length with a proximal end portion 16 connected to the housing 20, and more particularly from the outlet 46 of the fluid displacement system, towards at least a distal end portion 17. Each distal end portion 17 is then provided with perforations 18. Each perforation may be directed towards a transparent surface 3, and in particular an internal face of the transparent surface facing an eye of an individual. As a result, the fluid displacement system creates a vacuum in the internal space INT causing the external air EXT to flow towards the inner INT through the filter according to the arrow F0. The air present in the internal space is then a filtered air then passing through the fluid displacement system 40 along the arrow F1 to reach the pipe 15 according to the arrow F2. This pipe 15 subsequently distributes the filtered air against at least one transparent surface 3 of a protection device 3 according to the arrows F3.

According to the example of Figure 1, the fluid displacement system 40 may comprise a piston 41 movable in a cylinder 42. The piston 41 then delimits for example two chambers of the cylinder, a main chamber 42 'being in fluid communication with the exit 46 and the internal space INT.

Therefore, the fluid displacement system comprises a motor 44 for displacing the piston 41 in translation in the cylinder 42. For example, the motor is a rotary motor acting on a rod 43 of the piston 41 via a cam transforming the rotary motion of the motor into a translational movement.

Furthermore, a non-return valve 45 is interposed between the perforations 18 of the pipe 15 and the piston 41. For example, the non-return valve 45 is interposed between an outlet 46 of said cylinder 42 and the pipe 15. Consequently, a downward movement of the piston induces the introduction of filtered air into the main chamber. On the contrary, an upward movement of the piston causes the expulsion of this air, in particular in the pipe 15. Alternatively, the fluid displacement system 40 may be constituted by a cam which presses on an elastomer compression chamber actuating two unidirectional valves in opposite direction of the other and reversing their direction according to the high point and the low point of the crankshaft and the cam. As a result, the fluid displacement system 40 may comprise an electric generator 47 arranged in the casing 25 for electrically supplying the motor 44 with the fluid displacement system 40. In addition, the housing 20 can accommodate a switch 60 for operation. This switch 60 is thus connected to the fluid displacement system 40, and in particular to the motor 44. This switch protrudes from the envelope 25 towards the external medium EXT so that it can be manipulated by an operator. As a result, a sealing means 61 is interposed between the switch 60 and the casing 25. The sealing means 61 shown includes a seal or the like. It is also possible to provide a flexible membrane integral with the envelope and covering the switch to isolate it from the outside environment. In addition, the housing 20 accommodates a regulating control 70 connected to the fluid displacement system 40 to adjust the flow of filtered air into said pipe 15. For example, the control is connected to the motor 44. The control Regulation surrounds the envelope 25 to the external environment EXT to be manipulated by an operator. Thereafter, a sealing system 71 is interposed between the regulating control 70 and the casing 25. The sealing system 71 shown comprises a seal or the like. It is also possible to provide a flexible membrane integral with the casing and covering the control control to isolate it from the outside medium. Furthermore, the housing can be deported, ie not secured to a protection device. Indeed, only the pipe is reversibly fixed by the fastening system to this protection device.

To be particularly suitable for a mask, the pipe may then comprise a single distal end portion 18 transversely along the armature of the mask. This single distal end portion 18 may therefore comprise two perforated zones, each perforated zone being in line with a portion of the transparent surface facing an eye of an operator. According to the embodiment of Figure 1, the pipe may be temporarily attached to the mask for example by a wire attaching the distal end portion to a seal of the frame of the mask.

According to Figure 2, the pipe 15 has a Y-shaped shape with two distal end portions 17 provided with perforations 18 and a proximal end portion 16. This arrangement is particularly well suited to a pair of glasses to prevent the pipe to walk along the nose of an individual.

In addition, the pipe 15 may comprise a section provided with at least one flat connection 90 bent upstream of the perforations 18. Each flat connection may be shaped at the junction of a branch and an armature for example. This same flat connector can be used on a mask of the type of Figure 1 to keep the closure of the mask around the face of an operator wearing said mask. Indeed, such a mask may include a seal of the foam type to prevent the surrounding dust from coming to the eyes. This flat seal makes it possible not to create a particular leak in the passage on the foam. Moreover, and independently of the embodiment, FIG. 2 illustrates a fastening system 50 that can comprise a removable adhesive material 52, a jumper 53, a wire 51 or an elastic stapling means 54.

In addition, the housing 20 may include a fastening means 100 for attachment to a garment. Naturally, the present invention is subject to many variations as to its implementation. Although several embodiments have been described, it is well understood that it is not conceivable to exhaustively identify all the possible modes. It is of course conceivable to replace a means described by equivalent means without departing from the scope of the present invention.

Claims (13)

REVENDICATIONS1. Ventilation device (10) for ventilating a transparent protective device (2) having at least one transparent surface (3) to the light, characterized in that said ventilation device (10) comprises a pipe (15) extending from a proximal end portion (16) connected to a closed air generation casing (20) filtered to at least one distal end portion (17) provided with perforations (18) adapted to be directed to a transparent surface (3), said housing (20) comprising an envelope (25) delimiting an internal space (INT), said envelope (25) being provided with a filter (30) putting in fluid communication said internal space (INT) and a medium outside (EXT) the housing (20), said housing (20) having in said casing (25) a fluid displacement system (40) opening on said pipe (15) for conveying filtered air to said perforations (18), said ventilation device (10) comprising a system fixation device (50) for reversibly attaching said proximal end portion (16) to a transparent protective device (2). 2. Device according to claim 1, characterized in that said fixing system (50) comprises at least one of the organs present in a list including: a removable adhesive material (52), a jumper (53), a wire (51) , an elastic stapling means (54). 3. Device according to any one of claims 1 to 2, characterized in that said fluid displacement system (40) comprises a piston (41) movable in a cylinder (42) opening on said pipe (15) and a motor (44) for translational displacement of said piston (41) in said cylinder (42), a nonreturn valve (45) being interposed between said perforations (18) and said piston (41). 4. Device according to claim 3, characterized in that said non-return valve (45) is interposed between an outlet (46) of said cylinder (42) and said pipe (15). 5. Device according to any one of claims 1 to 4, characterized in that said fluid displacement system (40) comprises an electric generator (47) arranged in said casing (25) and connected to a motor (44) of the fluid displacement system (40). 6. Device according to any one of claims 1 to 5, characterized in that said housing (20) comprises a switch (60) projecting from said casing (25) to said external medium (EXT), said switch (60) being connected to the fluid displacement system (40), a sealing means (61) being interposed between said switch (60) and said casing (25). 7. Device according to any one of claims 1 to 6, characterized in that said housing (20) comprises a regulation control (70) projecting from said envelope (25) to said external medium (EXT), said control command (70) being connected to the fluid displacement system (40) for controlling the flow of filtered air into said pipe (15), a sealing system (71) being interposed between said control control (70) and said envelope (25). 8. Device according to any one of claims 1 to 7, characterized in that said casing (25) comprises a sealing opening / closing means (80) for manually opening or closing said casing (25). 9. Device according to any one of claims 1 to 8, characterized in that said filter (30) comprises a porous member (31). 10. Device according to any one of claims 1 to 9, characterized in that said housing (20) comprises a fixing means (100) for attachment to a garment. 11. Device according to any one of claims 1 to 10, characterized in that said pipe (15) comprises at least one flat connection (90) bent upstream of the perforations (18). 12. Device according to any one of claims 1 to 11, characterized in that said pipe (15) has a Y-shaped shape comprising two distal end portions (17) provided with perforations (18) and a portion of proximal end (16). Protective assembly (1) provided with a transparent protective device (2), said transparent protective device (2) having at least one transparent surface (3) to the light carried by an armature (4), characterized in that this protection assembly (1) comprises a ventilation device (10) according to any one of claims 1 to 12, said fixing system (50) releasably fixing each distal end portion (17) to the device transparent protection (2).