EP1933595A1 - Acoustic device with directional diffusion suitable for hearers and device-wearing non-hearers - Google Patents

Acoustic device with directional diffusion suitable for hearers and device-wearing non-hearers Download PDF

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Publication number
EP1933595A1
EP1933595A1 EP07291482A EP07291482A EP1933595A1 EP 1933595 A1 EP1933595 A1 EP 1933595A1 EP 07291482 A EP07291482 A EP 07291482A EP 07291482 A EP07291482 A EP 07291482A EP 1933595 A1 EP1933595 A1 EP 1933595A1
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EP
European Patent Office
Prior art keywords
side wall
wall
enclosure
box
inner face
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Granted
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EP07291482A
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German (de)
French (fr)
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EP1933595B1 (en
Inventor
Hervé Allart De Hees
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Individual
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Individual
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Priority claimed from FR0610923A external-priority patent/FR2917562A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/55—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired
    • H04R25/554—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired using a wireless connection, e.g. between microphone and amplifier or using Tcoils

Definitions

  • the present invention relates to an acoustic device for clearly broadcasting sounds, in a determined direction, in a limited area of a room or room, or in the open air (covered or not), so that only (s) the the person (s) located in the axis of the device hear (ent) the emission without the people in the vicinity are embarrassed.
  • devices of this type comprise a box having a solid bottom wall, a solid peripheral side wall having a proximal edge, a distal edge, an inner face and an outer face, said bottom wall being secured to said proximal edge and a non-solid front wall closing said box at said distal edge so that an enclosure is thus delimited by said walls, a flexible plate forming a speaker membrane being mounted in said enclosure.
  • proximal is understood to be that which is close to the bottom wall and distal to that which is remote from it.
  • Such a box can be secured, by its bottom wall, to a ceiling, a wall, a screen, etc. this, directly or via a mounting means, as suspended by slings.
  • the known devices are however not suitable for the hearing impaired.
  • the present invention therefore proposes to provide a device that is equally suitable for hearing and hearing impaired provided they are equipped with a headset receiver or a prosthesis having a telephone position, called T.
  • the device according to the invention comprises a magnetic induction loop mounted on the side wall of the box outside said enclosure.
  • Magnetic induction loops are known. They are used in the form of one or more turns of wire surrounding the fitted room, the loop thus formed being connected to an amplifier and acting on a receiver coil, provided in a receiver headset or a prosthesis with which the hearing impaired is equipped, which allows the latter to receive sound from a connected source.
  • the loop is made in the form of a "necklace" that the hearing impaired is around the neck.
  • the first application has the disadvantage, as indicated by the website avte.com, that the size of the room conditions the power of the amplification and therefore the price of the installation, that the results are random and that the materials components of the room are likely to absorb and deform the magnetic field.
  • the second application has the disadvantage of its lack of discretion and its inconvenient use.
  • both hearing and hearing impaired can benefit from the advantage of a directional sound, in the most perfect discretion.
  • the side wall is formed by the juxtaposition of an outer side wall and an inner side wall contiguous, a housing adapted to receive said magnetic induction loop being formed between said walls. lateral outer and inner.
  • the housing may be constituted by a peripheral cut formed in the inner face of said outer side wall and the housing is in communication with the environment through a ventilation passage.
  • the flexible plate forming a loudspeaker membrane may consist of a thin plastic film sandwiched between two porous protective panels.
  • this flexible plate is mounted by insertion of its periphery into the side wall of the box with the interposition of an insulator.
  • the geometry of the flexible plate forming a loudspeaker membrane, once mounted in said enclosure is selected from the group consisting of a plane geometry, a concave tile geometry and convex tile geometry.
  • the inner side of the side wall of the box and the inner face of the bottom wall are lined with an insulator.
  • the performance of the device according to the invention is such that it is possible to closely juxtapose two devices or more without resulting in an annoying overlap of their emission.
  • the minimum spacing between devices regardless of the size of the housing, is 1 meter, a preferred minimum clearance for user comfort being 1.40 meters. In general, the spacing between boxes can be less than 1.50 meters, without being less than 1 meter.
  • the figure 1 shows a box C mounted on a ceiling P and emits sound, according to the arrows S. This sound is noticeable only by an individual I in the zone Z delimited by the dashed lines.
  • the box C comprises a bottom wall 1 and a peripheral side wall 2 consisting of an outer side wall 2a and an inner side wall 2b contiguous.
  • the outer side walls 2a and inner 2b end with a distal end, respectively 4a and 4b, located in the same plane and which together constitute the distal end 4 of the outer wall 2 of the box.
  • the end 3a of the outer side wall 2a is below the end 3b of the inner side wall 2b, so that when the end 3b of the inner wall 2b abuts against the bottom wall 1 of the box, the end 3a of the outer wall 2a is spaced apart, thereby providing a passage 13 between the end 3a and the bottom wall 1.
  • the proximal ends 3a and 3b together form the proximal end 3 of the side wall 2.
  • the outer side wall 2a has an outer face 6 and an inner face 12, and the inner side wall 2b has an inner face 5. and an outer face 26.
  • the inner face 12 of the outer side wall 2a has a peripheral cut 28 which also affects its proximal end 3a so that when the inner face 12 of the outer wall 2a is contiguous to the outer face 26 of the inner wall 2b, a housing 11 is formed between the outer wall 2a and the inner wall 2b, and this housing 11 communicates with the passage 13.
  • a magnetic induction loop 10 here with three turns, is mounted in the housing 11.
  • interior 2b and exterior 2a side walls comprise, respectively, a blind hole in which is fitted by force a threaded insert 21 and a through hole 20 adapted to receive a screw 22 which comes into taken with said insert 21.
  • the through hole 20 with two sections of different diameter, defining between them a shoulder 23 on which abuts the head of the screw 22.
  • the side wall 2b is joined to the bottom wall 1 by a screw-and-glue assembly, a screw is visible at 18, and the bottom wall has holes, such as 19, for fixing the box C to the ceiling P.
  • the inner side wall 2b further has a cutout 29 adapted to receive the peripheral zone 14 of a flexible plate 9 forming a loudspeaker membrane, with interposition, between said peripheral zone and the material of the inner side wall 2b, of An insulating material 15.
  • the free edge of the peripheral zone 14 is further isolated from the inner face 12 of the outer side wall 2a by a self-adhesive rubber seal 24 into which said free edge is inserted.
  • the inner face 5 of the inner side wall 2b and the inner face 16 of the bottom wall 1 are coated with layers of insulating material 17.
  • the caisson C further comprises a velum 7 forming a front wall and whose free edge is fixed by staples 25 around the angle formed by the distal edge 4b and the outer face 26 of the inner side wall 2b.
  • a bore 27 is provided, in the inner face 12 of the outer side wall 2a, a bore 27 to provide the necessary space for the return of the awning 7 and its stapling.
  • the casing 1 thus conceals the magnetic induction loop 10 and protects it from the outside environment, the passage 13 ensuring the ventilation of the housing 11 of the loop.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Abstract

The device has a solid base wall (1) integrated with a proximal edge (3) of a solid peripheral side wall (2). A non solid front wall (7) closes a case (C) at the level of a distal edge (4) of the side wall such that an enclosure (8) is delimited by the walls. A flexible plate (9) forms a loud speaker membrane mounted in the enclosure. A magnetic induction current loop (10) is mounted on the side wall at the exterior of the enclosure. The loop is connected to an amplifier and provided in a receiver heatset/prothesis carried by a hearing-impaired person.

Description

Dispositif acoustique à diffusion directionnelle convenant à la fois aux entendants et aux malentendants appareillés.Directional diffusion acoustic device suitable for hearing and hearing impaired persons

La présente invention concerne un dispositif acoustique destiné à diffuser clairement des sons, selon une direction déterminée, dans une zone limitée d'une pièce ou salle, ou en plein air (à couvert ou non), de sorte que seule(s) la ou les personne(s) se trouvant dans l'axe du dispositif entend(ent) l'émission sans que les personnes se situant à proximité en soient gênées.The present invention relates to an acoustic device for clearly broadcasting sounds, in a determined direction, in a limited area of a room or room, or in the open air (covered or not), so that only (s) the the person (s) located in the axis of the device hear (ent) the emission without the people in the vicinity are embarrassed.

Des tels dispositifs sont connus et ils équipent notamment des guichets, des salles d'exposition, etc.Such devices are known and they equip including wickets, showrooms, etc..

Plus précisément, les dispositifs de ce type comprennent un caisson comportant une paroi de fond pleine, une paroi latérale périphérique pleine ayant un bord proximal, un bord distal, une face intérieure et une face extérieure, ladite paroi de fond étant solidarisée audit bord proximal et une paroi de façade non-pleine fermant ledit caisson au niveau dudit bord distal de sorte qu'une enceinte est ainsi délimitée par lesdites parois, une plaque flexible formant membrane de haut-parleur étant montée dans ladite enceinte.More specifically, devices of this type comprise a box having a solid bottom wall, a solid peripheral side wall having a proximal edge, a distal edge, an inner face and an outer face, said bottom wall being secured to said proximal edge and a non-solid front wall closing said box at said distal edge so that an enclosure is thus delimited by said walls, a flexible plate forming a speaker membrane being mounted in said enclosure.

Dans la présente description et les revendications, on entend par proximal ce qui est proche de la paroi de fond et par distal ce qui en est éloigné.In the present description and the claims, proximal is understood to be that which is close to the bottom wall and distal to that which is remote from it.

Un tel caisson peut être solidarisé, par sa paroi de fond, à un plafond, un mur, un paravent, etc. ce, directement ou via un moyen de montage, tel que suspendu par des élingues.Such a box can be secured, by its bottom wall, to a ceiling, a wall, a screen, etc. this, directly or via a mounting means, as suspended by slings.

Les dispositifs connus ne conviennent cependant pas aux malentendants.The known devices are however not suitable for the hearing impaired.

La présente invention se propose donc d'apporter un dispositif qui convienne tout aussi bien aux entendants qu'aux malentendants pourvu qu'ils soient équipés d'un casque récepteur ou d'une prothèse ayant une position téléphonique, dite T.The present invention therefore proposes to provide a device that is equally suitable for hearing and hearing impaired provided they are equipped with a headset receiver or a prosthesis having a telephone position, called T.

Ce but est atteint en ce sens que le dispositif selon l'invention comprend une boucle à induction magnétique montée sur la paroi latérale du caisson à l'extérieur de ladite enceinte.This object is achieved in that the device according to the invention comprises a magnetic induction loop mounted on the side wall of the box outside said enclosure.

Les boucles à induction magnétique sont connues. Elles sont utilisées sous la forme d'une ou plusieurs spires de fil ceinturant la salle aménagée, la boucle ainsi formée étant reliée à un amplificateur et agissant sur une bobine réceptrice, prévue dans un casque récepteur ou une prothèse dont est équipé le malentendant, ce qui permet à ce dernier de bien recevoir le son provenant d'une source connectée.Magnetic induction loops are known. They are used in the form of one or more turns of wire surrounding the fitted room, the loop thus formed being connected to an amplifier and acting on a receiver coil, provided in a receiver headset or a prosthesis with which the hearing impaired is equipped, which allows the latter to receive sound from a connected source.

Dans une autre application, la boucle est réalisée sous la forme d'un "collier" que le malentendant se passe autour du cou.In another application, the loop is made in the form of a "necklace" that the hearing impaired is around the neck.

La première application a l'inconvénient, comme l'indique le site internet avte.com, que la taille de la salle conditionne la puissance de l'amplification et donc le prix de l'installation, que les résultats sont aléatoires et que les matériaux constitutifs de la salle sont susceptibles d'absorber et de déformer le champ magnétique.The first application has the disadvantage, as indicated by the website avte.com, that the size of the room conditions the power of the amplification and therefore the price of the installation, that the results are random and that the materials components of the room are likely to absorb and deform the magnetic field.

La deuxième application a l'inconvénient de son absence de discrétion et de son usage malcommode.The second application has the disadvantage of its lack of discretion and its inconvenient use.

Il n'était pas évident que la combinaison d'une boucle à induction magnétique et d'un caisson tel que défini plus haut donnerait des résultats acceptables. En effet, sont ainsi mis, à proximité immédiate, des composants fonctionnant selon des modes différents (électronique et électromagnétique), et l'on pouvait s'attendre à des perturbations. Des choix de structure et des mesures d'isolation spécifiques ont d'ailleurs dû être prises et le résultat obtenu est étonnamment satisfaisant.It was not obvious that the combination of a magnetic induction loop and a box as defined above would give acceptable results. Indeed, are placed in the immediate vicinity of the components operating in different modes (electronic and electromagnetic), and we could expect disturbances. Specific structural choices and isolation measures have had to be taken and the result is surprisingly satisfactory.

Ainsi, aussi bien les entendants que les malentendants peuvent bénéficier de l'avantage d'un son directionnel, dans la plus parfaite discrétion.Thus, both hearing and hearing impaired can benefit from the advantage of a directional sound, in the most perfect discretion.

Dans une forme d'exécution pratique de l'invention, la paroi latérale est constituée par la juxtaposition d'une paroi latérale extérieure et d'une paroi latérale intérieure accolées, un logement adapté à recevoir ladite boucle à induction magnétique étant ménagé entre lesdites parois latérales extérieure et intérieure.In a practical embodiment of the invention, the side wall is formed by the juxtaposition of an outer side wall and an inner side wall contiguous, a housing adapted to receive said magnetic induction loop being formed between said walls. lateral outer and inner.

Plus précisément, le logement peut être constitué par une découpe périphérique ménagée dans la face intérieure de ladite paroi latérale extérieure et le logement est en communication avec l'environnement par un passage de ventilation.More specifically, the housing may be constituted by a peripheral cut formed in the inner face of said outer side wall and the housing is in communication with the environment through a ventilation passage.

D'une manière connue en soi, la plaque flexible formant membrane de haut-parleur peut être constituée d'un mince film plastique prise en sandwich entre deux panneaux protecteurs poreux.In a manner known per se, the flexible plate forming a loudspeaker membrane may consist of a thin plastic film sandwiched between two porous protective panels.

Selon l'invention, cette plaque flexible est montée par insertion de sa périphérie dans la paroi latérale du caisson avec interposition d'un isolant.According to the invention, this flexible plate is mounted by insertion of its periphery into the side wall of the box with the interposition of an insulator.

Selon l'effet directionnel que l'on entend donner au dispositif selon l'invention, la géométrie de la plaque flexible formant membrane de haut-parleur, une fois montée dans ladite enceinte, est sélectionnée dans le groupe consistant en une géométrie plane, une géométrie en tuile concave et une géométrie en tuile convexe.According to the directional effect that is intended to give to the device according to the invention, the geometry of the flexible plate forming a loudspeaker membrane, once mounted in said enclosure, is selected from the group consisting of a plane geometry, a concave tile geometry and convex tile geometry.

On comprend qu'une géométrie concave (face creuse dirigé vers l'environnement) concentrera fortement l'émission dans l'axe du dispositif, qu'une géométrie convexe (face bombée vers l'environnement) "arrosera" plus largement et qu'une géométrie plane sera une solution intermédiaire.It is understood that a concave geometry (hollow face directed towards the environment) will strongly concentrate the emission in the axis of the device, that a convex geometry (curved face towards the environment) will "water" more widely and that planar geometry will be an intermediate solution.

Pour éviter toute dispersion incontrôlée du son, la face intérieure de la paroi latérale du caisson et la face intérieure de la paroi de fond sont doublées d'un isolant.To avoid any uncontrolled dispersion of the sound, the inner side of the side wall of the box and the inner face of the bottom wall are lined with an insulator.

Les performances du dispositif selon l'invention sont telles qu'il est possible de juxtaposer étroitement deux dispositifs ou davantage sans qu'il en résulte un chevauchement gênant de leur émission. L'écartement minimal entre dispositifs, indépendamment de la dimension du caisson, est de 1 mètre, un écartement minimal préféré pour le confort de l'utilisateur étant de 1,40 mètre. D'une façon générale, l'écartement entre caissons peut donc être inférieur à 1,50 mètre, sans être inférieur à 1 mètre.The performance of the device according to the invention is such that it is possible to closely juxtapose two devices or more without resulting in an annoying overlap of their emission. The minimum spacing between devices, regardless of the size of the housing, is 1 meter, a preferred minimum clearance for user comfort being 1.40 meters. In general, the spacing between boxes can be less than 1.50 meters, without being less than 1 meter.

L'invention sera mieux comprise à l'examen du dessin annexé dans lequel :

  • la figure 1 illustre le principe général de l'invention, et
  • la figure 2 représente une coupe partielle du caisson selon l'invention.
The invention will be better understood on examining the appended drawing in which:
  • the figure 1 illustrates the general principle of the invention, and
  • the figure 2 represents a partial section of the box according to the invention.

La figure 1 montre un caisson C monté sur un plafond P et qui émet du son, selon les flèches S. Ce son n'est perceptible que par un individu I se trouvant dans la zone Z délimitée par les lignes en pointillés.The figure 1 shows a box C mounted on a ceiling P and emits sound, according to the arrows S. This sound is noticeable only by an individual I in the zone Z delimited by the dashed lines.

Comme il ressort de la figure 2 qui montre, en coupe, l'extrémité gauche du caisson C de la figure 1, le caisson C comporte une paroi de fond 1 et une paroi latérale périphérique 2 composée d'une paroi latérale extérieure 2a et d'une paroi latérale intérieure 2b accolées. Les parois latérales extérieure 2a et intérieure 2b se terminent par une extrémité distale, respectivement, 4a et 4b, située dans le dans le même plan et qui, conjointement, constituent l'extrémité distale 4 de la paroi extérieure 2 du caisson.As is apparent from the figure 2 which shows, in section, the left end of the caisson C of the figure 1 , the box C comprises a bottom wall 1 and a peripheral side wall 2 consisting of an outer side wall 2a and an inner side wall 2b contiguous. The outer side walls 2a and inner 2b end with a distal end, respectively 4a and 4b, located in the same plane and which together constitute the distal end 4 of the outer wall 2 of the box.

Coté proximal, l'extrémité 3a de la paroi latérale extérieure 2a est en deçà de l'extrémité 3b de la paroi latérale intérieure 2b, de sorte que, lorsque l'extrémité 3b de la paroi intérieure 2b est en butée contre la paroi de fond 1 du caisson, l'extrémité 3a de la paroi extérieure 2a en est à l'écart, ménageant ainsi un passage 13 entre l'extrémité 3a et la paroi de fond 1. Les extrémités proximales 3a et 3b forment ensemble l'extrémité proximale 3 de la paroi latérale 2.Proximal side, the end 3a of the outer side wall 2a is below the end 3b of the inner side wall 2b, so that when the end 3b of the inner wall 2b abuts against the bottom wall 1 of the box, the end 3a of the outer wall 2a is spaced apart, thereby providing a passage 13 between the end 3a and the bottom wall 1. The proximal ends 3a and 3b together form the proximal end 3 of the side wall 2.

En outre, la paroi latérale extérieure 2a comporte une face extérieure 6 et une face intérieure 12, et la paroi latérale intérieure 2b comporte une face intérieure 5 et une face extérieure 26. La face intérieure 12 de la paroi latérale extérieure 2a présente une découpe périphérique 28 qui affecte également son extrémité proximale 3a de sorte que, lorsque la face intérieure 12 de la paroi extérieure 2a est accolée à la face extérieure 26 de la paroi intérieure 2b, un logement 11 est ménagé entre la paroi extérieure 2a et la paroi intérieure 2b, et ce logement 11 communique avec le passage 13.In addition, the outer side wall 2a has an outer face 6 and an inner face 12, and the inner side wall 2b has an inner face 5. and an outer face 26. The inner face 12 of the outer side wall 2a has a peripheral cut 28 which also affects its proximal end 3a so that when the inner face 12 of the outer wall 2a is contiguous to the outer face 26 of the inner wall 2b, a housing 11 is formed between the outer wall 2a and the inner wall 2b, and this housing 11 communicates with the passage 13.

Comme on le voit, une boucle à induction magnétique 10, ici à trois spires, est montée dans le logement 11.As can be seen, a magnetic induction loop 10, here with three turns, is mounted in the housing 11.

Pour la réunion, entre elles, des parois latérales intérieure 2b et extérieure 2a, celles-ci comportent, respectivement, un trou borgne dans lequel est logé à force un insert fileté 21 et un trou traversant 20 adapté à recevoir une vis 22 qui vient en prise avec ledit insert 21. Le trou traversant 20 à deux sections de diamètre différent, déterminant entre elles un épaulement 23 sur lequel vient buter la tête de la vis 22.For the reunion, between them, interior 2b and exterior 2a side walls, these comprise, respectively, a blind hole in which is fitted by force a threaded insert 21 and a through hole 20 adapted to receive a screw 22 which comes into taken with said insert 21. The through hole 20 with two sections of different diameter, defining between them a shoulder 23 on which abuts the head of the screw 22.

La paroi latérale 2b est réunie à la paroi de fond 1 par un assemblage vissé-collé, dont une vis est visible en 18, et la paroi de fond comporte des perçages, tels que 19, pour la fixation du caisson C au plafond P.The side wall 2b is joined to the bottom wall 1 by a screw-and-glue assembly, a screw is visible at 18, and the bottom wall has holes, such as 19, for fixing the box C to the ceiling P.

La paroi latérale intérieure 2b présente en outre une découpe 29 adaptée à recevoir la zone périphérique 14 d'une plaque flexible 9 formant membrane de haut-parleur, avec interposition, entre ladite zone périphérique et le matériau de la paroi latérale intérieure 2b, d'un matériau isolant 15. Le bord libre de la zone périphérique 14 est, en outre, isolé de la face intérieure 12 de la paroi latérale extérieure 2a, par un joint 24 en caoutchouc autocollant dans lequel est inséré ledit bord libre.The inner side wall 2b further has a cutout 29 adapted to receive the peripheral zone 14 of a flexible plate 9 forming a loudspeaker membrane, with interposition, between said peripheral zone and the material of the inner side wall 2b, of An insulating material 15. The free edge of the peripheral zone 14 is further isolated from the inner face 12 of the outer side wall 2a by a self-adhesive rubber seal 24 into which said free edge is inserted.

La face intérieure 5 de la paroi latérale intérieure 2b et la face intérieure 16 de la paroi de fond 1 sont revêtues de couches de matériau isolant 17.The inner face 5 of the inner side wall 2b and the inner face 16 of the bottom wall 1 are coated with layers of insulating material 17.

Le caisson C comporte, en outre, un vélum 7 formant paroi de façade et dont le bord libre est fixé par des agrafes 25 autour de l'angle formé par le bord distal 4b et la face extérieure 26 de la paroi latérale intérieure 2b. A cet effet, il est prévu, dans la face intérieure 12 de la paroi latérale extérieure 2a, un alésage 27 pour ménager la place nécessaire au retour du vélum 7 et à son agrafage.The caisson C further comprises a velum 7 forming a front wall and whose free edge is fixed by staples 25 around the angle formed by the distal edge 4b and the outer face 26 of the inner side wall 2b. For this purpose, there is provided, in the inner face 12 of the outer side wall 2a, a bore 27 to provide the necessary space for the return of the awning 7 and its stapling.

Le caisson 1 dissimule ainsi à la vue la boucle à induction magnétique 10 et la protège du milieu extérieur, le passage 13 assurant la ventilation du logement 11 de la boucle.The casing 1 thus conceals the magnetic induction loop 10 and protects it from the outside environment, the passage 13 ensuring the ventilation of the housing 11 of the loop.

Il est bien entendu que l'invention n'est pas limitée à la forme d'exécution illustrée. En particulier, bien que le caisson C ait été représenté fixé directement au plafond P, il pourrait l'être via des élingues. Dans ce cas, les perçages 19 serviraient à la fixation de telles élingues. Par ailleurs, alors que la figure 2 montre l'utilisation de deux couches d'isolant 17, appliquées croisées pour optimiser l'effet, une seule couche d'épaisseur correspondante (c'est-à-dire double par rapport à l'épaisseur des couches individuelles représentées) pourrait convenir également.It is understood that the invention is not limited to the illustrated embodiment. In particular, although the casing C has been shown fixed directly to the ceiling P, it could be shown via slings. In this case, the holes 19 would serve for fixing such slings. Moreover, while figure 2 shows the use of two layers of insulation 17, cross-applied to optimize the effect, a single layer of corresponding thickness (that is to say double with respect to the thickness of the individual layers represented) could also be suitable .

Rappel des références utilisées dans les figures :Recall of the references used in the figures:

  • C : Caisson - P : Plafond - I : IndividuC: Caisson - P: Ceiling - I: Individual
  • S : Direction du sonS: Direction of sound
  • Z. zone "arrosée" par le son
    1. 1. paroi de fond du caisson C
    2. 2. paroi latérale périphérique composée d'une paroi extérieure 2a et d'une paroi intérieure 2b
    3. 3. extrémité proximale de la paroi latérale 2 composée de l'ensemble formé par l'extrémité proximale 3a de la paroi latérale extérieure 2a et de l'extrémité proximale 3b de la paroi latérale intérieure 2b
    4. 4. extrémité distale de la paroi latérale 2 composée de la juxtaposition de l'extrémité distale 4a de la paroi latérale extérieure 2a et de l'extrémité distale 4b de la paroi latérale intérieure 2b
    5. 5. face intérieure de la partie "paroi latérale intérieure 2b" de la paroi latérale 2
    6. 6. face extérieure de la partie "paroi latérale extérieure 2a" de la paroi latérale 2
    7. 7. vélum formant paroi de façade
    8. 8. enceinte
    9. 9. plaque flexible formant membrane de haut-parleur
    10. 10.boucle à induction magnétique comportant, ici, trois spires
    11. 11. logement d'hébergement de la boucle 10
    12. 12.face intérieure de la paroi latérale extérieure 2a
    13. 13.passage de ventilation mettant le logement 11 en communication avec l'environnement
    14. 14. zone périphérique de la plaque 9
    15. 15.isolant interposé entre le matériau de la paroi latérale intérieure 2b et la plaque 9
    16. 16.face intérieure de la paroi de fond 1
    17. 17.isolant doublant la face intérieure 16 de la paroi de fond 1 et la face intérieure 5 de la paroi latérale intérieure 2b
    18. 18.vis de fixation de la paroi de fond 1 à la paroi latérale intérieure 2b (assemblage vissé-collé)
    19. 19.perçage pour la fixation par vis du caisson C à la paroi réceptrice, telle que plafond P
    20. 20.perçage pour la réunion par vis des parois latérales extérieure 2a et intérieure 2b à mettre en vis-à-vis de l'insert 21
    21. 21.insert à mettre en vis-à-vis du perçage 20
    22. 22.vis venant en prise avec l'insert 21 et dont la tête vient en butée contre l'épaulement 23
    23. 23.épaulement prévu dans le perçage 20
    24. 24. joint en caoutchouc autocollant dans lequel est inséré le bord de la plaque 9
    25. 25.agrafe de fixation du vélum 7 autour de l'angle formé par le bord distal 4b et la face extérieure 26 de la paroi latérale intérieure 2b
    26. 26.face extérieure de la paroi latérale intérieure 2b
    27. 27.alésage dans la face intérieure 12 de la paroi latérale extérieure 2a
    28. 28. découpe dans la paroi latérale extérieure 2a
    29. 29. découpe dans la paroi latérale intérieure 2b.
    Z. zone "watered" by the sound
    1. 1. bottom wall of the box C
    2. 2. Peripheral side wall consisting of an outer wall 2a and an inner wall 2b
    3. 3. proximal end of the side wall 2 composed of the assembly formed by the proximal end 3a of the outer side wall 2a and the proximal end 3b of the inner side wall 2b
    4. 4. distal end of the side wall 2 consisting of the juxtaposition of the distal end 4a of the outer side wall 2a and the distal end 4b of the inner side wall 2b
    5. 5. inner face of the "inner side wall 2b" part of the side wall 2
    6. 6. outer face of the "outer side wall 2a" part of the side wall 2
    7. 7. Vellum forming facade wall
    8. 8. pregnant
    9. 9. flexible plate forming speaker diaphragm
    10. 10.Magnetic induction loop comprising, here, three turns
    11. 11. accommodation housing the loop 10
    12. 12.Interior surface of outer side wall 2a
    13. 13.passage ventilation venting the housing 11 in communication with the environment
    14. 14. peripheral area of the plate 9
    15. 15. Isolation interposed between the material of the inner side wall 2b and the plate 9
    16. 16.Interior surface of the bottom wall 1
    17. 17. insulating doubling the inner face 16 of the bottom wall 1 and the inner face 5 of the inner side wall 2b
    18. 18. Screw for fastening the bottom wall 1 to the inner side wall 2b (screwed-and-glued assembly)
    19. 19.Perforation for screw fixing of the box C to the receiving wall, such as ceiling P
    20. 20.perçage for the meeting by screws of the outer side walls 2a and inner 2b to put vis-à-vis the insert 21
    21. 21.insert to put in opposite of the piercing 20
    22. 22.is engaged with the insert 21 and whose head abuts against the shoulder 23
    23. 23. Shoulder provided in drilling 20
    24. 24. Self-adhesive rubber seal in which the edge of the plate 9 is inserted
    25. 25. Velum 7 fastening clip around the angle formed by the distal edge 4b and the outer face 26 of the inner side wall 2b
    26. 26.Exterior surface of inner side wall 2b
    27. 27.bore in the inner face 12 of the outer side wall 2a
    28. 28. cut in the outer side wall 2a
    29. 29. cut in the inner side wall 2b.

Claims (8)

Dispositif acoustique directionnel du type comprenant un caisson comportant une paroi de fond pleine (1), une paroi latérale périphérique pleine (2) ayant un bord proximal (3), un bord distal (4), une face intérieure (5) et une face extérieure (6), ladite paroi de fond (1) étant solidarisée audit bord proximal (3) et une paroi de façade non-pleine (7) fermant ledit caisson au niveau dudit bord distal (4) de sorte qu'une enceinte (8) est ainsi délimitée par lesdites parois (1,2,7), et une plaque flexible formant membrane de haut-parleur (9) étant montée dans ladite enceinte (8), caractérisé en ce qu'une boucle à induction magnétique (10) est montée sur ladite paroi latérale (2) à l'extérieur de ladite enceinte (8).Directional acoustic device of the type comprising a box having a solid bottom wall (1), a solid peripheral side wall (2) having a proximal edge (3), a distal edge (4), an inner face (5) and a face outer wall (6), said bottom wall (1) being secured to said proximal edge (3) and a non-solid front wall (7) closing said box at said distal edge (4) so that an enclosure (8) ) is thus delimited by said walls (1,2,7), and a flexible plate forming a loudspeaker membrane (9) being mounted in said enclosure (8), characterized in that a magnetic induction loop (10) is mounted on said lateral wall (2) outside said enclosure (8). Dispositif selon la revendication 1, caractérisé en ce que ladite paroi latérale (2) est constituée par la juxtaposition d'une paroi latérale extérieure (2a) et d'une paroi latérale intérieure (2b) accolées, un logement (11) adapté à recevoir ladite boucle à induction magnétique (10) étant ménagé entre lesdites parois latérales extérieure (2a) et intérieure (2b).Device according to claim 1, characterized in that said lateral wall (2) is formed by the juxtaposition of an outer side wall (2a) and an inner side wall (2b) contiguous, a housing (11) adapted to receive said magnetic induction loop (10) being provided between said outer (2a) and inner (2b) sidewalls. Dispositif selon la revendication 2, caractérisé en ce que ledit logement (11) est constitué par une découpe périphérique ménagé dans la face intérieure (12) de ladite paroi latérale extérieure (2a) et en ce que ledit logement (11) est en communication avec l'environnement par un passage de ventilation (13).Device according to claim 2, characterized in that said housing (11) is constituted by a peripheral cut formed in the inner face (12) of said outer side wall (2a) and in that said housing (11) is in communication with the environment by a ventilation passage (13). Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que ladite plaque flexible formant membrane de haut-parleur (9) est constituée d'un mince film plastique pris en sandwich entre deux panneaux protecteurs poreux.Device according to any one of claims 1 to 3, characterized in that said flexible plate forming a loudspeaker membrane (9) consists of a thin plastic film sandwiched between two porous protective panels. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que ladite plaque flexible formant membrane de haut-parleur (9) est montée par insertion de sa périphérie (14) dans la paroi latérale (2) du caisson avec interposition d'un isolant (15).Device according to any one of claims 1 to 4, characterized in that said flexible plate forming a loudspeaker membrane (9) is mounted by inserting its periphery (14) in the side wall (2) of the box with the interposition of an insulator (15). Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que la géométrie de ladite plaque flexible formant membrane de haut-parleur (9), une fois montée dans ladite enceinte, est sélectionnée dans le groupe consistant en une géométrie plane, une géométrie en tuile concave et une géométrie en tuile convexe.Device according to any one of claims 1 to 5, characterized in that the geometry of said flexible speaker membrane plate (9), once mounted in said enclosure, is selected from the group consisting of a plane geometry, concave tile geometry and convex tile geometry. Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la face intérieure (5) de la paroi latérale (2) du caisson et la face intérieure (16) de la paroi de fond sont doublées d'un isolant (17).Device according to any one of claims 1 to 6, characterized in that the inner face (5) of the side wall (2) of the box and the inner face (16) of the bottom wall are lined with an insulator ( 17). Ensemble d'au moins deux dispositifs selon l'une quelconque des revendications 1 à 7, caractérisé en ce l'écartement entre les caissons desdits dispositifs est inférieur à 1,50 mètre, sans être inférieur à 1 mètre.Set of at least two devices according to any one of claims 1 to 7, characterized in that the spacing between the boxes of said devices is less than 1.50 meters, without being less than 1 meter.
EP20070291482 2006-12-15 2007-12-11 Acoustic device with directional diffusion suitable for hearers and device-wearing non-hearers Active EP1933595B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0610923A FR2917562A1 (en) 2006-12-15 2006-12-15 Directional acoustic device for use in e.g. exhibition hall, has induction current loop mounted on side wall at exterior of enclosure, where loop is coupled to amplifier and provided in heatset/prothesis carried by hearing-impaired person
FR0700221A FR2917563B1 (en) 2006-12-15 2007-01-12 DIRECTIONAL DIFFUSION ACOUSTIC DEVICE SUITABLE FOR BOTH HEARING AND APPARENT DEVICE

Publications (2)

Publication Number Publication Date
EP1933595A1 true EP1933595A1 (en) 2008-06-18
EP1933595B1 EP1933595B1 (en) 2010-01-27

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EP20070291482 Active EP1933595B1 (en) 2006-12-15 2007-12-11 Acoustic device with directional diffusion suitable for hearers and device-wearing non-hearers

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3518559A1 (en) 2018-01-26 2019-07-31 Bacqueyrisses - Societe Automobiles Method and system for transmitting messages broadcast in a closed space to people wearing devices

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1443157A (en) * 1972-11-28 1976-07-21 Davies M J Auditory aids for the deaf
GB2271886A (en) 1992-10-22 1994-04-27 Pilkington Glass Ltd Translucent article having induction loop antenna
EP1178701A2 (en) * 2000-08-02 2002-02-06 Fane Acoustics Limited Loudspeaker
JP2003163999A (en) * 2001-11-26 2003-06-06 Toyo Engineering:Kk Hearing aid unit
WO2006100815A1 (en) 2005-03-18 2006-09-28 Toshiba Elevator Kabushiki Kaisha Audio broadcast system for elevator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1443157A (en) * 1972-11-28 1976-07-21 Davies M J Auditory aids for the deaf
GB2271886A (en) 1992-10-22 1994-04-27 Pilkington Glass Ltd Translucent article having induction loop antenna
EP1178701A2 (en) * 2000-08-02 2002-02-06 Fane Acoustics Limited Loudspeaker
JP2003163999A (en) * 2001-11-26 2003-06-06 Toyo Engineering:Kk Hearing aid unit
WO2006100815A1 (en) 2005-03-18 2006-09-28 Toshiba Elevator Kabushiki Kaisha Audio broadcast system for elevator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3518559A1 (en) 2018-01-26 2019-07-31 Bacqueyrisses - Societe Automobiles Method and system for transmitting messages broadcast in a closed space to people wearing devices

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