Patent Publication Number: US-2018049550-A1

Title: Resting device

Description:
The invention relates to a device intended to allow a user to adopt a comfortable resting seated position. 
     More specifically, the invention relates to the field of rest in a means of transportation. In particular, the device according to the invention can be used during transportation in an airplane, bus, train, etc. In general, the device according to the invention can be used in any type of transportation. However, the device according to the invention is not limited to the field of rest during transportation and can also be used in any other field in which a user wishes to rest or relax, for example in the home, at the office, etc. 
     While traveling on means of transportation, a traveller must often remain in a seated position in a seat for a long time. This seated position can, however, be particularly uncomfortable and can be unsatisfactory for resting or for sleeping. 
     Devices allowing a traveller to rest or relax more easily during journeys in a seated position are already known. Thus, document U.S. Pat. No. 5,645,319 describes an inflatable pillow on which a seated passenger can lean forward and rest his head in order to rest. The shape of the pillow, once inflated, is predetermined in such a way as to occupy substantially the space in front of the passenger and be supported by a supporting means, for example such as a tray table of a seat. 
     However, such a device does not allow the traveller to have an optimal position during long journeys in order to sleep. In particular, this position does not allow the head of the traveller to be maintained in a comfortable position. This can lead to painful muscle contractions, in particular in the back of the neck. 
     The document U.S. 2010205743 that describes a device for supporting the head and the neck that also allows a user to rest is also known. The device has a circular shape with an opening in the middle that allows the user to insert and rest the user&#39;s head. The supporting device also comprises holes at its base that allow the circulation of air to and from the face of the user in order to allow the user to breathe. 
     The document U.S. Pat. No. 6,721,978 that describes a device that comprises a support for supporting the head and a support for supporting the thorax is also known. In particular, the support for supporting the head comprises an opening allowing a user to insert and rest his head. 
     These devices, however, do not provide a particular position for maintaining the arms and the hands of the user. 
     There is therefore a need to improve the position of a user in order for the user to be able to relax in a seated position during medium or long journeys. 
     To overcome the aforementioned problem, the invention relates to a device intended to allow a user to adopt a seated rest position, the device comprising at least a head-maintaining upper portion for maintaining the head and a supporting lower portion, the upper portion for maintaining the head comprising an upper opening suitable for receiving the face of the user, the supporting lower portion allowing the device to be kept bearing on a support, the device bearing on the support being suitable for supporting the weight of the head of the user, the device also comprising at least two lateral openings allowing the user to position the arms of the user under the upper portion for maintaining the head. 
     Via these arrangements, the user has a rest position allowing the user to both maintain the head of the user, or even the chest, as well as the arms and the hands of the user in a comfortable position in order to relax or to sleep. 
     In various embodiments of the method according to the invention, one and/or the other of the following arrangements can optionally also be implemented: 
     the supporting lower portion comprises a peripheral portion, the peripheral portion comprising a front portion and a rear portion, the two lateral openings extending between the front portion and the rear portion, respectively; 
     the two lateral openings are opposite to each other, the device being passed through on either side between the two lateral openings; 
     each of the two lateral openings is closed by a closing device; 
     the upper opening comprises a rear side suitable for the user to be able to rest the face of the user, at the forehead, on the device; 
     the upper opening comprises a front side suitable for the user to be able to rest the face of the user, below the mouth, on the device; 
     the front portion and/or the rear portion comprise an opening allowing the air and the heat given off by the user to be evacuated outside of the device; 
     the device comprises an inner structure suitable for allowing the device to be deployed; 
     the device is an inflatable device; 
     the device comprises an inflation valve allowing the device to be inflated manually and/or the device to be inflated via an air output; 
     the device has a height equal to approximately 40 centimetres, as well as a width and a length between 20 and 30 centimetres; 
     the device comprises an additional element in contact with the supporting lower portion in order to allow the device to be raised; 
     the device is suitable for use in a means of transportation, the device being in particular suitable for being placed on an open tray table of a seat located in front of the user; 
     the rest position of the user also corresponds to a safety position suitable for absorbing the impacts in the case of a collision of the means of transportation; 
     the device comprises an extension at the upper portion for maintaining the head allowing the user to be protected in the case of impacts, in particular front impacts; 
     the device is totally inflatable; 
     the supporting lower portion comprises an inner face located inside the device and extending between the two lateral openings, the lateral openings and the inner face allowing the user to position the arms and hands of the user during the use of the device; and 
     the upper opening and/or the lateral openings of the device comprise cutouts extending from the sides of their respective openings. 
     Of course, the various features, alternatives and/or embodiments of the present invention can be associated with each other in various combinations as long they are not incompatible with each other or mutually exclusive. 
     The present invention will be better understood and other features and advantages will also appear upon reading the following detailed description comprising embodiments given for information purposes with reference to the appended drawings, given as non-limiting examples, which can be used to supplement the understanding of the present invention and the disclosure of its production and, if necessary, contribute to its definition, in which: 
       FIG. 1  is a perspective view of a device according to an embodiment of the invention; 
       FIG. 2  is a side view of the device of  FIG. 1 ; 
       FIG. 3  is an overhead view of the device of  FIGS. 1 and 2 ; and 
       FIGS. 4 a  and 4 b    are side views of a passenger using the device of  FIGS. 1 to 3  under normal conditions of use, the device being placed on a seat tray table; 
       FIG. 5  is a perspective view of a device according to a second embodiment of the invention; 
       FIG. 6  is a side view of the device of  FIG. 5  in which curtains close the lateral openings of the device; 
       FIG. 7  is a perspective view of a device according to a third embodiment of the invention; 
       FIG. 8  is a side view of the device of  FIG. 7 ; 
       FIGS. 9 a  and 9 b    are side views of a passenger using a device according to the invention in a safety position, the device being placed on the knees of the passenger; 
       FIG. 10  is a perspective view of a device according to a fourth embodiment of the invention; 
       FIG. 11  is an overhead view of the device of  FIG. 10 ; 
       FIG. 12  is a bottom view of the device of  FIG. 10 ; 
       FIG. 13  is a side view of the device of  FIG. 10 ; 
       FIG. 14  is a rear view of the device of  FIG. 10 ; 
       FIG. 15  is a perspective view of the device of  FIG. 10  in which the upper portion for maintaining the head is covered with a cover; and 
       FIG. 16  is a view of the flat template intended to be assembled in order to form the device of  FIG. 10 . 
    
    
     Below is a detailed explanation of a plurality of embodiments of the invention accompanied by examples and references to the drawings. 
       FIG. 1  shows a device  1  according to an embodiment of the invention. 
     According to this first embodiment, the device  1  has a generally parallelepipedic shape, in particular cubic. However, the device  1  according to the invention is not limited by such a shape and can have, for example, a spherical, cylindrical or other shape. 
     The device  1  comprises a head-maintaining upper portion  3  for maintaining the head (hereinafter called “upper portion”) and a supporting lower portion  4  (hereinafter called “lower portion”). 
     The lower portion  4  can also comprise a peripheral portion  5  extending up to the upper portion  3 . As shown in  FIGS. 1 to 6 , the peripheral portion  5  can in particular comprise a front portion  5 A, a rear portion  5 B. 
     It is understood that the adjectives “front” and “rear” applied to the device  1  and to its components are meant in reference to when a person uses the device  1  under normal conditions in order to rest, the term “front” thus denoting an element relatively close to the user, the term “rear” thus denoting an element farther away. 
     Under normal conditions of use of the device  1 , the peripheral portion  5 , in particular the front portion  5 A and the rear portion  5 B of the device  1 , extend substantially vertically. Also under normal conditions of use, the lower portion  4  comprises a lower face  4 A that extends substantially horizontally. 
     The adjectives “vertical” and “horizontal” applied to the device and to its components are meant according to their normal meaning and are understood namely when the lower face  4 A of the lower portion  4  of the device  1  is placed under normal conditions of use on a support that is itself horizontal, such as a tray table  11 , completely unfolded, of a seat  12  as will be described below, or on the knees of the user, if necessary with an interposed cushion or bag. When the device  1  is used by a user seated behind a seat  12  in front, the rear portion  5 B can bear, at least partially on the rear of the backrest of the seat  12  in front. 
     As shown in  FIGS. 2, 8 and 10 , the faces of the front and/or rear portions  5 A,  5 B of the device  1  can also be slightly curved. The front portion  5 A thus allows the thorax of a user  8  to bear on the device  1  as will be described below. The front portion  5 A can further comprise a recess  6  at its lower portion as shown in  FIGS. 1, 5 and 7 . 
     As is visible in  FIGS. 2 and 8 , the upper portion  3  is preferably slightly inclined forward. The upper portion  3  thus comprises an upper face  3 A for example inclined by an angle α between 1 and 60 degrees, and more specifically of approximately 40 degrees, with respect to the lower face  4 A of the lower portion  4 . 
       FIG. 3  shows an overhead view of the device  1  according to an embodiment of the invention. In this  FIG. 3 , the upper portion  3 , and namely its upper face  3 A, comprises an upper opening  7 . The upper opening  7  is in particular centred on the upper portion  3 . The upper opening  7  is at least defined by a front side  7 A. The upper opening can also be defined by a rear side  7 B. These front and/or rear sides  7 A,  7 B are preferably surfaces inclined towards the inside of the device  1  and suitable for coming into contact with a portion of the face of the user  8 . More specifically, the front side  7 A of the upper opening  7  is suitable in order for the user  8  to be able to bear on the device  1  via the face of the user below the mouth. The rear side  7 B of the upper opening  7  is suitable in order for the user  8  to be able to bear on the device  1  via the forehead of the user. 
       FIG. 11  shows an overhead view of the device  1  according to another embodiment of the invention. According to this embodiment, the upper opening  7  has the shape of a trapezoid. The front side  7 A and the side  7 B are positioned in parallel to each other. The front side  7 A has a length less than the rear side  7 B. The opening  7  has an axis of symmetry. 
     Moreover, the upper opening  7  can also comprise lateral sides  7 C,  7 D, in particular inclined towards the inside, extending between the front side  7 A and the rear side  7 B, respectively. The lateral sides  7 C,  7 D of the upper opening  7  are suitable for supporting the cheeks and the temples of the face of the user  8 . 
     Thus, the upper opening  7  is defined by the front side  7 A, the rear side  7 B and by the lateral sides  7 C. The upper opening  7  thus comfortably maintains the head of the user  8  at the chin, the forehead and along the opposite sides of the face. The front side  7 A, the rear side  7 B and/or the lateral sides  7 C can also comprise flaps  23 . Flaps  23  consist of extensions of matter, advantageously flat, extending partly at the upper opening  7 . The flaps  23  are for example made from the same material as the device  1 , in particular made as a single piece with the material of the device  1 . 
     The flaps  23  are suitable for preventing the face of the user from being irritated or even getting cut when the user places the face of the user in contact with the sides  7 A,  7 B,  7 C,  7 D of the upper opening  7 . They also allow marks on the face during prolonged use to be prevented. 
     The upper opening  7  is thus dimensioned in order to receive the face of the user  8 , including the mouth, the nose and the eyes, in order for this user  8  to be able to rest the head of the user facing downwards on the device  1 . In particular, the mouth, the nose and the eyes of the user  8  are thus located inside the upper opening  7  and are therefore not directly in contact with the device  1 . The head of the user  8  is thus positioned straight, that is to say, without the user  8  having to turn the head of the user to the side. This position, even when held for a long time, is particularly comfortable since it prevents the appearance of possible painful muscle contractions in the neck. 
     Moreover, the lower portion  4 , and namely the peripheral portion  5 , contains holes. As illustrated in the drawings, the peripheral portion  5  thus comprises at least two lateral openings  9 . In particular, these lateral openings  9  can namely be contained between the front portion  5 A and the rear portion  5 B of the device  1 . Moreover, these lateral openings  9  can each be substantially rectangular in shape or have another shape such as circular or other. 
     As illustrated in the embodiment visible in  FIG. 13 , the lateral openings  9  advantageously have a rectangular shape, rounded at its edges. Each lateral opening  9  is thus defined by at least a lower side  9 A and an upper side  9 B. The lower side  9 A and the upper side  9 B are parallel to each other. Two lateral sides  9 C,  9 D extend between the lower side  9 A and the upper side  9 B, respectively. The lower side  9 A, the rear side  9 B and/or the lateral sides  9 C,  9 D can also comprise flaps  23 , such as those described above with regard to the sides  7 A,  7 B,  7 C,  7 D of the upper opening  7 . Advantageously, only the lower side  9 A comprises a flap as visible in  FIG. 13 . The flap  23  of the lower side  9 A allows irritation of the arms of the user to be prevented when the user places them in the lateral openings  9  of the device  1 . The flaps  23  thus participate in better comfort during the use of the device  1 . 
     The lower portion  4  further comprises an inner face  10  located inside the device  1 . “Inside” should be understood as meaning that the inner face  10  is located in an inner space  2  of the device  1  more particularly defined by the upper portion  3  and the lower portion  4 . The inner face  10  can thus be defined by the peripheral portion  5  and namely by the front portion  5 A and by the rear portion  5 B of the device  1 . The inner face  10  is preferably substantially horizontal and extends in parallel to the lower face  4 A of the lower portion  4  of the device  1  as shown for example in  FIGS. 7 and 8 . Alternatively, as shown in  FIGS. 1 and 2 , the inner face  10  can also be slightly curved. The lower face  4 A is advantageously a plain face, that is to say, does not have an opening or hole, as illustrated in  FIG. 12 . 
     The inner face  10  also extends between the two lateral openings  9  of the device  1 . Thus, the device  1  is passed through on either side laterally between the two lateral openings  9 . The upper opening  7  also opens into the inner space  2 , and in particular onto the inner face  10  inside the device  1 . 
     The lateral openings  9  and the inner face  10  allow the user  8  to position the arms and the hands of the user during the use of the device  1 . More precisely, the user  8  can pass each of the arms of the user through a lateral opening  9  under the upper portion  3 . The user can thus place the hands of the user, for example one on top of the other, on the inner face  10  of the device  1 . 
     By positioning the head of the user in the upper opening  7  and the arms of the user in the lateral openings  9  of the device  1 , the user  8  can thus occupy a rest position in order to sleep, rest or relax, in particular in means of transportation.  FIG. 4 a    shows more particularly a use of the device  1  under normal conditions, wherein the user  8  has a seated rest position, the device  1  being placed on an unfolded tray table  11  of a seat  12  located in front of the user  8 . In this use, the rear portion  5 B of the device  1  can bear against the seat  12  in front, as shown in  FIG. 4   b.    
     In particular in the embodiment in which the device  1  is used in a means of transportation, the device  1  can also comprise a vertical extension  13  located to the rear of the upper portion  3 , as shown in  FIGS. 5, 6, and 9 . The extension  13  thus extends the rear portion  5 B vertically upwards. This extension  13  is in particular suitable for preventing the head of the user  8  from directly impacting an object placed behind the device  1  in the case of an impact or collision. In particular, in the embodiment in which the device  1  is placed on a tray table  11  of a seat, the extension  13  allows the user  8  to be protected and a possible impact between the user  8  and the seat  12  located in front of the user to be absorbed. The extension  13  also allows such an impact to be prevented when the device  1  is placed on the knees of the user  8 , in particular in a safety position as illustrated in  FIG. 9 a    or  9   b  and as will be described below, if there is violent braking during an emergency landing. 
     Alternatively, in the absence of an extension, the rear portion of the upper portion  3  for supporting the head can allow the head of the user  8  to be prevented from directly impacting an object placed behind the device  1 . 
     The front and rear portions  5 A,  5 B can be plain, that is to say, not comprise openings as shown in  FIGS. 1, 10 and 14 . The front portion  5 A can thus namely be used to support the thorax of the user  8 . However, the front and/or rear portions  5 A,  5 B can also comprise an opening  14 . 
     In particular, the front portion  5 A of the device  1  can be completely or partially open, the upper opening  7  thus no longer being defined by a front side  7 A but also at least partially extending at the level of the front portion  5 A of the device  1 . According to this embodiment, the user  8  in a seated rest position does not bear on the device  1  at the chin of the user but only at the forehead of the user on the rear side  7 B of the upper opening  7 . 
     The rear portion  5 B can also comprise an opening  14  having any shape, for example circular or rectangular, as shown in  FIG. 5 . The opening  14  located on the rear portion  5 B of the device  1 , as well as the two lateral openings  9 , thus allow the air and the heat given off by the user to be easily evacuated from the inside, and in particular from the inner space  2  of the device  1 , towards the outside. The lateral openings  9  also allow such an evacuation of air. 
     According to an embodiment shown by  FIG. 6 , each lateral opening  9  can be closed by a closing device  15 . The closing devices  15  are thus positioned facing each lateral opening  9  and can be fastened for example to the device  1 . Such closing devices  15  allow the user  8  to be insulated from the outside when the user is in a rest position. The rest position is thus more suitable for relaxing or for a nap and allows, for example, one to be in at least partial or even total darkness in order to watch a film or read on a tablet, or play for example. For this purpose, the inner space  2  of the device  1  can comprise a holder for a smartphone or tablet. 
     As illustrated by  FIG. 6 , the closing devices  15  are for example curtains, in particular fastened above the lateral openings  9 , via self-fastening means or via dome fasteners in order for the user  8  to be able to detach them if necessary. Alternatively, the closing devices  15  can, for example, be one or more flexible shutters fastened onto the sides of each lateral opening  9 . 
     The device  1  has a height h suitable for preventing the user  8  from leaning too far forward when in the rest position. For example, the device  1  can have a vertical height h at the rear portion  5 B equal to approximately 40 centimetres. The device  1  can also have a width L and a length  1  between 20 and 30 centimetres, respectively. As shown in  FIG. 4 a   , the device  1  can have a size and a shape more precisely suitable for being placed on a tray table  11 , of a seat  12 , located in front of the user  8 , or even bearing on the seat  12  in front, as shown in  FIG. 4 b   . Moreover, in order to prevent the device  1  from being able to slide on the support, and in particular on the tray table  11 , the device  1  can comprise a nonslip edge or a nonslip surface  17  at least partially covering the lower face  4 A of the lower portion  4  of the device  1 . 
     More generally, the device can have a size, and in particular a height h, adapted according to its user  8 . As shown in  FIGS. 5 and 6 , and in order to be able to be used by tall persons, the device  1  can also comprise an additional element  16 , namely inflatable, intended to raise the device  1 . In particular, the additional element  16  is placed under the lower portion  4  of the device  1 . The additional element  16  can be fastened to the device  1  for example via self-fastening strips, dome fasteners, or other. The additional element  16  can namely be used when the device  1  is placed directly on the knees of the user  8 , in particular in a safety position as will be described below. According to this embodiment, the additional element  16  is thus placed between the knees of the user  8  and the lower portion  4  of the device  1 . 
     The device  1  is preferably formed from a light material in order to be easily transportable. The weight of the device  1  is preferably less than 300 grams (g), or even less than 250 grams (g). It is for example greater than 100 grams. 
     Moreover, in order to improve the comfort in the rest position, the device  1  can namely comprise a material suitable for being slightly deformed, for example a shape-memory material, such as a foam or a gel, in order to ergonomically conform to the shape of the face and/or the hands of the user  8 . The device  1  is moreover covered by a trim cover made of a plastic material, fabric, velvet or other. The trim cover can itself also comprise a foam or a gel in order to improve the ergonomics of the device  1 . The trim cover can also comprise the closing devices  15 , in particular curtains or flexible shutters as described above. 
     For reasons of hygiene, a disposable single-use coating can also be placed on the device  1  for each use or for each different user  8 . This coating can, for example, allow at least the upper portion  3  of the device  1  to be covered, in particular the front, rear and lateral sides  7 A,  7 B,  7 C of the upper opening  7 . As visible in  FIG. 15 , the coating can, for example, be a cover  22  that can be removably mounted on the device  1 . The cover  22  advantageously covers the upper portion  3  while leaving the upper opening  7  accessible. The cover  22  is maintained on the device  1  by any means, for example via an elastic band of the cover placed around the device  1 . 
     The device  1  can also be an inflatable device. The device  1  can thus alternately be in two states, a folded state and an inflated state. In the folded state, the device  1  does not contain any gas and has a small or even zero inner volume. The device  1  can thus be folded in order to occupy less space. It can thus be easily transported or stored in a compartment, for example on the side or under the seat  12  of the user  8 . If the device is inflatable, the weight given above is the weight of the folded device. In the inflated state, the device  1  is unfolded in order for the user  8  to be able to use it, in particular by taking up the rest position as shown in  FIG. 4 a   . In particular, in the inflated state, the device  1  is suitable in order for the user  8  to be able to bear on the device in the rest position, in particular at the upper opening  7  on which the head of the user  8  is placed. Thus, the device  1  bearing on a support  11  is suitable for supporting the weight of the user  8 , and in particular of the head of the user. 
     The device  1  can be totally inflatable. Totally inflatable is understood to mean that the device  1  does not comprise additional rigid non-inflatable elements suitable for supporting the weight of the head of the user  8 , as visible for example in the embodiment in  FIG. 10 . Alternatively, the device can be partially inflatable. According to this alternative, the device  1  can for example comprise a portion of the supporting lower portion  4  made of foam, in particular the portion between the inner face  10  and the lower face  4 A, while the rest of the device  1  is inflatable. When the device is totally inflatable, it can comprise flaps, as described above, the flaps being non-inflatable while being separated from an inner chamber via a weld. 
     In order to be able to be inflated, the device  1  comprises an inflation valve  18 , that is to say, a passage for injection of inflation gas. The inflation valve  18  is namely located on the lower portion  4  of the device  1 , in particular on the front  5 A or rear  5 B portion. The device  1  thus comprises a single chamber to be inflated. 
     The inflation  8  can be carried out manually by the user by blowing directly into the inflation valve  18  via the mouth. The device  1  is suitable for being inflated rapidly by a user  8 . Advantageously, the device  1  is sufficiently inflated after the user  8  has blown between 3 and 8 breaths of air into the device, in particular less than six breaths of air. The inner volume of the device is thus between 10 and 20 litres, namely between 12 and 15 litres. 
     Alternatively, the inflation can be carried out by connecting the device  1  to an automatic inflation system such as a foot pump or an electric pump (not shown in the drawings). Moreover, an inflation tube having a variable length can be connected to the inflation valve  18  with, opposite, an input for injection into the device  1 . The inflation tube thus allows the device to be inflated via an air output located for example near the seat  12  of the user  8 . For example, such an air output can be an air conditioning output of the means of transportation. 
     The inflation valve  18  can also consist of an evacuation valve allowing the device  1  to be rapidly deflated. The inflation valve  18  can for example be closed by a plug. 
     According to one embodiment of the invention, the inflation valve  18  can comprise a double inflation system. A first inflation system allows the device  1  to be inflated or deflated quickly, possibly quasi-instantly. Such a first inflation system is particularly useful if the device  1  must be inflated or deflated in an emergency situation for example. A second inflation system allows more precise inflation, for example directly via the mouth by the user  8 , namely if the preceding inflation using the first inflation system is not sufficient to inflate the device  1  completely. An inflation valve  18  comprising such a double inflation system is known per se and will not be described in more detail. 
     According to the embodiment of the invention illustrated in  FIG. 10 , the inflation valve  18  can be a valve comprising a check valve. A check valve is suitable for pivoting in front of the opening of the valve in order to close it or open it. 
     The check valve allows the device  1  to be inflated, advantageously manually, for example by blowing directly into the inflation valve  18  via the mouth. However, when the user stops blowing into the valve  18 , the check valve closes the opening of the valve under the effect of the overpressure of the air contained in the device  1 . The device  1  does not therefore deflate. 
     Moreover, a valve comprising a check valve is also suitable for allowing quick deflation of the device  1 . For this purpose, the user bears on the check valve of the valve, in such a way that the opening of the valve is no longer closed and the air can escape from the device  1 . This leads to an ease of use of the device  1 , for example when the user has finished using the device  1  and wishes to deflate it. A valve comprising such a check valve is known per se and will not be described in more detail. 
     The device  1  can be inflated differently according to the desire and the preferences of the user. In particular, a user can wish to underinflate the device  1  in order for the latter to be more flexible during its use or more suitable to the size of the user or to the seated position of the user. However, although under-inflated, the device  1  remains suitable for supporting the weight of the face of the user, in particular in order to be used in a rest position as shown in  FIG. 4   a.    
     The device  1  can also comprise an inner structure suitable for allowing the device to be automatically inflated, for example via the first inflation system described above. More precisely, the inner structure of the device  1  allows the device  1  to be expanded in terms of volume as soon as the inflation valve  18  is opened. The inner structure can, for example, consist of a cellular structure, the cells being in fluid communication with each other. The inner structure can also comprise an “accordion” structure that, when being deployed, deploys and quickly inflates the device  1 . A non-limiting example of such an inner structure of the device  1  is already known per se and is described for example in document U.S. Pat. No. 3,378,864. 
     Obviously, the invention is not limited to the embodiments described above and provided only as examples. It covers various modifications, alternative forms and other variants that a person skilled in the art could think of in the context of the present invention and namely all combinations of the various operating modes described above, which can be taken separately or in combination. 
     In particular, although the invention was described for use in the field of rest, the invention can also have an advantageous use in the field of safety during transportation. In particular, the device  1  can be used by a user  8  in order to take up a seated safety position similar to the rest position described above. For example, this can be the case for preventing an impact during an emergency landing upon orders from an airplane crew. 
     According to this latter embodiment, the device  1  can also be used as an “airbag” safety device. A cartridge that generates inflation gas can thus allow gas to be injected very quickly into the device  1  in order to obtain very quick, see quasi-immediate, inflation. This cartridge allows the required quantity of gas to be injected. This cartridge can be actuated by a dedicated gripping device, as shown in  FIG. 9 b   . The device  1  can thus be positioned on the knees of the user  8 . As shown in  FIG. 9 a   , the user  8  thus has a position similar to the rest position described above while leaning farther forwards than in the rest position. The user  8  thus adopts a safety position suitable for protecting during a collision of the means of transportation or for absorbing an impact. In this case, the device  1  bears on the seat in front, as shown in  FIG. 9 b   . Namely, this position allows the head and the vital organs to be protected. 
     The integration of an inflation cartridge and of a dedicated gripping device into a device that does not provide the safety function, is also envisaged. 
     In order to allow easy evacuation of the user  8  during an emergency, the device  1  can be quickly deflated by the user  8 . According to this embodiment, the device  1  can comprise a pre-tearable portion  19  shown by the dotted line in  FIG. 8  allowing the wall of the device  1  to be torn in order to quickly deflate the device  1 . Once the wall has been torn, the device  1  thus becomes unusable and must be replaced. 
     The device  1  is advantageously made from a template  28 . The template  28  has the shape of a cross or of a T, more particularly shown in flat form in  FIG. 16 . The template  28  allows to outline two layers  26 ,  27  which, superimposed on one another, are connected to each other in order to define an inflation chamber of the device that can be inflated by the user  8 . The two layers  26 ,  27  are more particularly connected together at their circumference  29 , as well as around the openings  7  and  9 , by a peripheral weld. A single layer  26  is more particularly visible in  FIG. 16 . 
     The two layers  26 ,  27  are advantageously impermeable to air. The two layers  26 ,  27  are for example made of a plastic material, namely polyvinyl chloride (PVC). 
     The two layers  26 ,  27  can namely be different from each other. The two layers  26 ,  27  can have different colours in order to form a device  1  that has two colours once assembled. For example, the inner space  2  of the device  1 , formed by the layer  27 , can have a different colour than the exterior of the device  1 , formed by the other layer  26 . 
     Moreover, one of the layers  26 ,  27  or both layers  26 ,  27  of the device  1  can be transparent. 
     The device  1  is then made by assembling the edges to each other. According to the example in  FIGS. 10 and 16 , each layer  1  of the device  1  comprises more particularly  6  faces. The assembly of the device  1  can be carried out using the template  28  by sewing or by gluing the edges to each other, or via any other means. This step can namely be carried out in the factory, in order to guarantee its reliability. In this case, the device is delivered closed, and no step of assembly by the user is necessary. “Closed” in this context does not refer to the air chambers, which are necessarily closed, apart from the fact that they allow their inflation via a valve, but to the device itself, in that all the edges are rigidly connected together. It is not therefore intended to be possible for the user to place the device in the configuration of  FIG. 16 . 
     Certain portions of the device  1  can further comprise structural welds. A structural weld locally connects the two layers  26 ,  27  to each other. Such a structural weld can be made via high frequency gluing or by any other means. 
     Thus, as visible in  FIG. 12 , the lower portion  4 , in particular the lower face  4 A, can comprise at least one structural weld  21 . The lower portion  4  can namely comprise two structural welds  21 A,  21 B. The two structural welds  21 A,  21 B extend longitudinally, at least partially, between the front face  5 A and the rear face  5 B of the device  1 , without reaching two other peripheral welds of the device. The two structural welds  21 A,  21 B allow a flatter lower face  4 A to be obtained, in order to improve the retention of the device  1  on a support  11 . In particular, the lower portion  4  thus comprises three inflatable beads  24 A,  24 B,  24 C, separated from each other by the structural welds  21 A,  21 B. 
     Moreover, the presence of a structural weld allows the inner volume of the inflation chamber of the device to be inflated to be limited, while providing better resistance of the device  1 . Other portions of the device  1  can also comprise such structural welds. In particular, as visible in  FIG. 14 , the rear portion  5 B can comprise at least one structural weld  20 . The structural weld  20  of the rear face extends vertically in a rectilinear manner, at least partially, between upper portion  3  and the lower portion  4 . 
     The structural weld  20  thus defines two inflatable beads  25 A,  25 B having an equal size. The inflatable beads  25 A,  25 B extend substantially vertically, in parallel to one another. The inflatable beads  25 A,  25 B provide better resistance of the device  1  during its use. 
     According to one embodiment, the structural welds  20 ,  21 A and  21 B described above are the only three structural welds of the device. 
     Although the device  1  has been described above with regard to a specific seated rest position of the user  8  as shown in  FIG. 4 a   , in particular in which the face of the user  8  is received in the upper opening  7 , other positions using the device  1  are possible. As an example not shown in the drawings, the user  8  can also occupy a rest position by placing the chin of the user on the upper portion  3  for maintaining the head without placing the head of the user in the upper opening  7 . According to another example, the user  8  can also use the device  1  as a lateral bearing device. The user can, for example, place one arm through the two lateral openings. The device thus comprises either its front portion or its rear portion placed between the arm and the lateral portion of the chest of the user. Alternatively, the user can hug the device  1  with one arm, the latter being positioned between the arm and the lateral portion of the chest of the user, the inner device being thus deformed in such a way that the inner space  2  is greatly reduced. 
     Moreover, the device  1  can comprise other accessories not shown in the drawings in order to facilitate the use of the device  1  while traveling. As non-limiting examples, the device  1  can comprise a pocket in order to store the belongings of the user  8  when the user wants to rest. The device  1  can also comprise an attachment element, such as a ring, in order for the user  8  to be able to attach the glasses of the user to the device  1  before adopting a rest position.