EP2674048B1 - Casque équipé de dispositif de communication acoustique - Google Patents

Casque équipé de dispositif de communication acoustique Download PDF

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Publication number
EP2674048B1
EP2674048B1 EP20130171355 EP13171355A EP2674048B1 EP 2674048 B1 EP2674048 B1 EP 2674048B1 EP 20130171355 EP20130171355 EP 20130171355 EP 13171355 A EP13171355 A EP 13171355A EP 2674048 B1 EP2674048 B1 EP 2674048B1
Authority
EP
European Patent Office
Prior art keywords
helmet
microphone
acoustic
chinbar
anechoic chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP20130171355
Other languages
German (de)
English (en)
Other versions
EP2674048A1 (fr
Inventor
Lucio Zancai
Stephane Cohen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bell Racing Europe SA
Original Assignee
Bell Racing Europe SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bell Racing Europe SA filed Critical Bell Racing Europe SA
Publication of EP2674048A1 publication Critical patent/EP2674048A1/fr
Application granted granted Critical
Publication of EP2674048B1 publication Critical patent/EP2674048B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A42—HEADWEAR
    • A42B—HATS; HEAD COVERINGS
    • A42B3/00—Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04—Parts, details or accessories of helmets
    • A42B3/30—Mounting radio sets or communication systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces
    • H04R1/086—Protective screens, e.g. all weather or wind screens
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/027—Spatial or constructional arrangements of microphones, e.g. in dummy heads

Definitions

  • the present invention concerns a protective helmet provided with an acoustic communication device and a half-chinbar, used when driving automobiles or motor vehicles, in particular but not exclusively in the field of automobile races and sports competitions, specifically but not restrictively in the field of rallies.
  • a protective helmet provided with an acoustic communication device and a half-chinbar, used when driving automobiles or motor vehicles, in particular but not exclusively in the field of automobile races and sports competitions, specifically but not restrictively in the field of rallies.
  • the present invention can also be used in the field of sports motorcycling or in other fields which envisage the use of protective helmets.
  • a helmet of the type in question is provided with a protective cover or shell for the head, which has a lower aperture in which the head is inserted, and a front aperture of which at least one function is to allow the wearer of the helmet to see.
  • Protective helmets are also known which include an acoustic communication device which includes a microphone and transceiver means to receive and communicate with the outside and inside.
  • the front aperture is limited to a front band which substantially affects the zone around the eyes, while at the lower part there is a continuous chinstrap on one side and the other of the cover, or shell, of the helmet, and integral therewith, which closes the lower front part of the cover to give greater protection to the user: the front and lower apertures are therefore distinct and separate from each other.
  • the chinstrap is not normally provided and the helmet is open at the front, with a single continuous aperture constituting the front and lower aperture.
  • open or jet helmets on the one hand can protect the wearer to a lesser degree, but on the other hand they give greater comfort and freedom, especially considering the high temperatures that can be reached for example in a close cockpit during an automobile race.
  • the half-chinbar is normally used to position the microphone in front of the mouth of the wearer, or in any case to facilitate their use.
  • the driver and the passengers for example the navigator, can communicate easily, using the microphones.
  • EP 1 099 390 discloses such a helmet.
  • microphones of the type discussed here One problem in using microphones of the type discussed here is the disturbance to the audio communication coming from environmental noise, in particular coming from the drive members during driving, as well as from the movement of the vehicle on the road surface.
  • Purpose of the present invention is to obtain a helmet provided with an acoustic communication device and a half-chinbar which guarantees greater acoustic comfort in communication operations using the microphone, reducing the acoustic disturbances due to environmental noise during use, damping and dissipating the environmental noise and the echoes which can interfere with communication.
  • the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
  • a helmet according to the present invention is provided with an acoustic communication device which includes at least a microphone.
  • the helmet comprises a protective cover or shell which has at least a front aperture and a half-chinbar which extends cantilevered from one side of the front aperture so as to have a free end disposed in an intermediate position in the front aperture, to which the microphone is associated.
  • the helmet of the present invention comprises an anechoic device associated to the free end of the half-chinbar and configured to cooperate with the microphone.
  • the anechoic device is included in the half-chinbar. This guarantees an optimal acoustic coordination with the position of the microphone.
  • the half-chinbar is formed by an arm, which has an internal surface facing toward the front aperture and extends cantilevered from one side of the front aperture toward the inside of the front aperture itself, having the free end in an intermediate position in the front aperture, so that, when in use, it is substantially in correspondence to the mouth of the user of the helmet.
  • the anechoic device is made in the free end of the arm of the half-chinbar, thus guaranteeing the possibility of functional integration, and in some conditions of use, also physical integration, with the microphone.
  • the anechoic device comprises a plurality of acoustic dissipator elements which reflect with respect to each other, gradually damping, the sound energy associated to the acoustic waves of the environmental noise, dissipating the unwanted echoes.
  • the acoustic dissipator elements are made of a sound absorbing material, so as to increase the speed of abatement of the sound energy associated to the acoustic wave of the noise.
  • the anechoic device comprises an anechoic chamber made in the half-chinbar, with which the microphone is associated.
  • the anechoic chamber is made inside the internal surface of the half-chinbar.
  • the anechoic device has a limited bulk also from the aesthetic point of view, and in any case performs its functions of reducing noise, and shields the microphone form the outside.
  • the acoustic dissipator elements are included in the anechoic chamber. This has the advantage of a direct cooperation of the acoustic dissipator elements with the microphone, with the purpose of reducing noise.
  • the anechoic chamber is formed by a first lowered seating delimited by a first bottom and configured to develop around the microphone, reducing the surrounding noise disturbances in an optimal manner.
  • the anechoic chamber comprises a second seating to completely or partly house the microphone. This can be advantageous so as to at least partly include the microphone, in some conditions of use, directly in the anechoic device, surrounding it and shielding it at the front and the side.
  • the second seating is made on the first bottom of the anechoic chamber and is delimited by a second bottom.
  • a plurality of the acoustic dissipator elements extend protruding from the second bottom. This can be advantageous so as to limit the environmental noise even when the microphone is used distanced from the half-chinbar.
  • a helmet 10 can be used for example, but not only, during sports motor races and competitions, typically during rallies.
  • the helmet 10 in question is the open or jet helmet, provided with a half-chinbar as will be explained more fully hereafter.
  • the helmet 10 comprises a protective cover or shell 12 which has a front aperture 14, through which the user can see, and a lower aperture 15 into which the head is inserted; due to the open nature of the helmet, the apertures 14, 15 are a single whole.
  • the front aperture 14 is delimited laterally by two lateral lobes 17 of the shell 12.
  • the helmet 10 comprises a half-chinbar 13 which is associated to the shell 12 in substantial correspondence with one side of the front aperture 14.
  • the half-chinbar 13 is formed by an arm 16 which has an internal surface 19 facing toward the front aperture 14, and an external surface 21 opposite the internal surface 19.
  • the arm 16 is associated only to one of the two lateral lobes 17 of the shell 12 and extends cantilevered toward the inside of the front aperture 14.
  • the arm 16 has a first free end 20, in an intermediate position in the front aperture 14, so that during use it is substantially in correspondence to the mouth of the user of the helmet, and a second end 22 associated to the lobe 17 of the shell 12.
  • the helmet 10 comprises an acoustic communication device associated to the half-chinbar 13 to allow communication toward the outside.
  • the acoustic communication device includes a microphone 30.
  • the acoustic communication device of the helmet 10 can also be equipped with earphones, a signal amplifier and means to transmit and receive the audio signal, for example a transceiver antenna.
  • the microphone 30 can be positioned in correspondence to the first free end 20 of the arm 16 of the half-chinbar 13, generally in correspondence to the mouth of the user, on the side of the internal surface 19 of the half-chinbar 13, between the latter and the front aperture 14 of the shell 12.
  • the microphone 30 can be partly or completely housed in the half-chinbar 13, or it can be positioned distanced from it, but always between the half-chinbar 13 and the front aperture 14 of the shell 12 in order to receive the communications issued locally by the user.
  • the microphone 30 can be connected by means of an oblong connector 32, possibly to the signal amplifier and to the audio signal transceiver means.
  • the oblong connector 32 internally includes connection and transmission cables for the electric and/or acoustic signals coming from the microphone 30.
  • the oblong connector 32 can be made as a pipe or similar tubular element, and its position can be adjusted by the user according to needs, method of use or specific habits.
  • the oblong connector 32 is a flexible tubular element, for example a corrugated pipe made of plastic material as shown in the drawings, or which has articulation elements, so as to give the user the possibility of easily positioning the microphone 30 in the position which is most congenial and comfortable for him, at a desired distance from the mouth.
  • the oblong connector 32 can be completely or partly housed in an open positioning channel 36 made along the half-chinbar 13, in the case in point along the internal surface 19 of the half-chinbar 13.
  • the positioning channel 36 has a substantially U-shaped cross section.
  • the helmet 10 comprises an anechoic device 40 associated to the microphone 30.
  • the anechoic device 40 is advantageously included in the half-chinbar 13, in particular, in this case it is made in correspondence to the first free end 20 of the arm 16.
  • the anechoic device 40 is configured to damp and dissipate the echoes of the noise from the surrounding environment, so that the acoustic signal received by the microphone 30 is less disturbed, in order to transmit the voice of the user as clearly as possible.
  • the anechoic device 40 comprises an anechoic chamber 42 made in the half-chinbar 13, to which the microphone 30 is associated.
  • anechoic chamber 42 is built into the internal surface 19 of the half-chinbar 13.
  • the microphone 30 can thus be completely or partly housed or built into the anechoic chamber 42, as shown in fig. 2 , or it can be positioned distanced from it.
  • the anechoic chamber 42 has a height, width and depth suitable to cover and protect the microphone 30 at the front with its bulk, and in some conditions of use selected by the user, also to house the microphone 30 inside it.
  • the half-chinbar 13 and in particular the arm 16 have a curvilinear cross section, at least in correspondence to the first free end 20 of the arm 16, where the anechoic device 40 is made, in particular with a concavity facing toward the front aperture 14 of the shell 12.
  • the anechoic device 40 and in particular the anechoic chamber 42, in their turn have a curvilinear section with a concavity facing toward the front aperture 14, and are able to frontally surround the microphone 30 which is associated to the first free end 20 of the arm 16, thus efficiently carrying out the function of reducing the acoustic disturbances and also shielding and protecting the microphone 30, both physically and acoustically, from the outside.
  • the anechoic device 40 comprises a plurality of acoustic dissipator elements 46, advantageously made in the anechoic chamber 42.
  • each of the acoustic dissipator elements 46 is shaped with a tapered conformation, for example shaped like a cone or truncated cone, to exploit the damping and reflection properties of the acoustic waves of this conformation.
  • the acoustic dissipator elements 46 could be shaped like a pyramid or truncated pyramid.
  • the number, disposition and distribution of the acoustic dissipator elements 46 is optimized according to the sizes of the anechoic chamber 42, both in depth and in surface extension, in order to determine the desired damping and dissipation of the noise.
  • the anechoic chamber 42 is formed by a first lowered seating delimited by a first bottom 48 and configured to develop around the microphone 30, whether the latter is partly or completely housed in the anechoic chamber 42, or is distanced from the anechoic chamber 42.
  • a plurality of the acoustic dissipator elements 46 extend protruding from the first bottom 48.
  • the acoustic dissipator elements 46 are distributed homogeneously on the first bottom 48, substantially covering all the area.
  • the acoustic dissipator elements 46 are made of a sound proofing material.
  • the first bottom 48 is also made of a sound proofing material.
  • the whole of the anechoic chamber 42, or a suitable part of it, is made of the sound proofing material.
  • the anechoic chamber 42 has a second seating 44 to completely or partly house, in some conditions of use, the microphone 30.
  • the second seating is shaped with a shape mating to that of the microphone 30.
  • the second seating 44 is made on the first bottom 48 of the anechoic chamber 42, thus lowered with respect to it, and is delimited by a second bottom 52.
  • a plurality of the acoustic dissipator elements 46 can extend protruding from the second bottom 52.
  • the acoustic dissipator elements 46 are distributed homogeneously on the second bottom 52 as well, substantially covering all the area.
  • the ratio between the pitch, or interaxis, between two adjacent acoustic dissipator elements 46, for example on the first bottom 48 and/or on the second bottom 52, and the nominal size, for example the nominal diameter of one acoustic dissipator element 46 is comprised between about 0.5 and about 2.5, preferably between about 1 and about 2.
  • ratio When the ratio is comprised between about 0.5 and about 1, two adjacent acoustic dissipator elements 46 reciprocally overlap.
  • the ratio can be constant in the anechoic device 40 or can progressively vary from the center to the periphery, or also have a different variable development according to requirements.
  • all the acoustic dissipator elements 46 have the same shape and size. In another form of embodiment, the shape and/or size can be different according to requirements.
  • the anechoic chamber 42 has a lateral aperture 54 for direct communication with the positioning channel 36.
  • the positioning channel 36 extends as far as the anechoic chamber 42 where, thanks to the lateral aperture 54, it faces inside the latter.
  • the oblong connector 32 can be easily positioned, according to requirements, completely or partly in the positioning channel 36, and the microphone 30 provided at the end of the oblong connector 32 can be put in the anechoic chamber 42, completely or partly housed inside it, in particular in the second seating 44, or can be distanced from the anechoic chamber 42, positioned at the front of it, in this case too, according to the user's requirements.
  • the microphone, 30, in some conditions or particular requirements or methods of use or preferred habits of the user, could be disposed closer to or farther from the mouth.
  • the present invention thus allows to put the microphone 30 where it is needed, remaining associated in any case, even at a distance, to the anechoic chamber 42, which thus carries out, in all the positions in which the microphone 30 can be placed, its function of dissipating noises and eliminating acoustic disturbances. This is particularly thanks to the curvilinear cross section of the anechoic chamber 42 as described above, which shields the microphone 30 at the front.
  • the second seating 44 also comprises the acoustic dissipator elements 46 is advantageous particularly during conditions of use in which the microphone 30 is placed, during use, distanced from the anechoic chamber 42, since the acoustic dissipator elements 46 provided on the second bottom 52 damp and dissipate the noise which could possibly be propagated in the free space from the back part of the microphone 20 toward the second bottom 52.

Landscapes

  • Helmets And Other Head Coverings (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)

Claims (15)

  1. Casque muni d'une demi-mentonnière et d'un dispositif de communication acoustique qui comprend au moins un microphone (30), comportant une enveloppe de protection (12) qui présente au moins une ouverture avant (14) et une demi-mentonnière (13) qui se prolonge en porte à faux à partir d'un côté (17) de ladite ouverture avant (14) de manière à avoir une extrémité libre (20) disposée dans une position intermédiaire dans ladite ouverture avant (14), à laquelle ledit microphone (30) est associé, caractérisé en ce que ladite demi-mentonnière (13) comprend un dispositif anéchoïque (40) associé à son extrémité libre configuré pour coopérer avec ledit microphone (30).
  2. Casque selon la revendication 1, caractérisé en ce que la demi-mentonnière (13) est formée par un bras (16), qui présente une surface interne (19) faisant face vers l'ouverture avant (14) et qui s'étend en porte à faux d'un côté (17) de ladite ouverture avant (14) vers l'intérieur de l'ouverture avant (14), ayant ladite extrémité libre (20) dans une position intermédiaire dans l'ouverture avant (14), de sorte que, pendant l'utilisation, ladite extrémité libre est sensiblement en correspondance avec la bouche de l'utilisateur du casque.
  3. Casque selon l'une des revendications 1 ou 2, caractérisé en ce que ledit dispositif anéchoïque (40) comprend une pluralité d'éléments de dissipation acoustiques (46).
  4. Casque selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit dispositif anéchoïque (40) comprend une chambre anéchoïque (42) agencée dans la demi-mentonnière (13), à laquelle le microphone (30) est associé.
  5. Casque selon les revendications 2 et 4, caractérisé en ce que ladite chambre anéchoïque (42) est intégrée dans la surface interne (19) de la demi-mentonnière (13).
  6. Casque selon les revendications 3 et 4 ou 3 et 5, caractérisé en ce que les éléments de dissipation acoustiques (46) sont inclus dans ladite chambre anéchoïque (42).
  7. Casque selon les revendications 4, 5 ou 6, caractérisé en ce que ladite chambre anéchoïque (42) est formée par une première assise abaissée délimitée par un premier fond (48) et configurée de manière à se développer autour du microphone (30).
  8. Casque selon les revendications 3 et 7, caractérisé en ce qu'une pluralité desdits éléments de dissipation acoustiques (46) s'étendent en saillie à partir dudit premier fond (48).
  9. Casque selon l'une quelconque des revendications 4 à 8, caractérisé en ce qu'au moins une partie de ladite chambre anéchoïque (42) est réalisée dans un matériau à isolation phonique.
  10. Casque selon l'une quelconque des revendications 4 à 9, caractérisé en ce que ladite chambre anéchoïque (42) comprend une seconde assise (44) pour contenir complètement ou partiellement ledit microphone interne (30).
  11. Casque selon les revendications 7 et 10 ou 8 et 10, caractérisé en ce que la seconde assise (44) est réalisée sur le premier fond (48) de ladite chambre anéchoïque (42) et est délimitée par un second fond (52).
  12. Casque selon les revendications 3 et 11, caractérisé en ce qu'une pluralité desdits éléments de dissipation acoustiques (46) s'étendent en saillie à partir dudit second fond (52).
  13. Casque selon l'une quelconque des revendications précédentes, caractérisé en ce que ledit dispositif de communication acoustique comprend un connecteur (32) pour relier le microphone (30), éventuellement à un amplificateur de signal et à des moyens d'émission-réception du signal audio.
  14. Casque selon la revendication 13, caractérisé en ce qu'il comprend un canal de positionnement ouvert (36) réalisé le long de la demi-mentonnière (13) pour loger le connecteur (32).
  15. Casque selon les revendications 4 et 14, caractérisé en ce que la chambre anéchoïque (42) présente une ouverture latérale (54) pour une communication directe avec le canal de positionnement (36).
EP20130171355 2012-06-11 2013-06-11 Casque équipé de dispositif de communication acoustique Not-in-force EP2674048B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000110A ITUD20120110A1 (it) 2012-06-11 2012-06-11 Casco provvisto di dispositivo per la comunicazione acustica

Publications (2)

Publication Number Publication Date
EP2674048A1 EP2674048A1 (fr) 2013-12-18
EP2674048B1 true EP2674048B1 (fr) 2015-01-28

Family

ID=46604445

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20130171355 Not-in-force EP2674048B1 (fr) 2012-06-11 2013-06-11 Casque équipé de dispositif de communication acoustique

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EP (1) EP2674048B1 (fr)
IT (1) ITUD20120110A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2958447B1 (fr) * 2013-02-21 2019-01-16 Cardo Systems, Ltd. Casque ayant un microphone intégré dans la joue
US9525765B2 (en) 2014-02-18 2016-12-20 Quiet, Inc. Ergonomic anechoic anti-noise canceling chamber for use with a communication device and related methods
US9386135B2 (en) 2014-05-16 2016-07-05 Quiet, Inc. Ergonomic tubular anechoic chambers for use with a communication device and related methods
US9253299B2 (en) 2014-02-18 2016-02-02 Quiet, Inc. Ergonomic tubular anechoic chambers for use with a communication device and related methods
US9576567B2 (en) 2014-02-18 2017-02-21 Quiet, Inc. Ergonomic tubular anechoic chambers for use with a communication device and related methods
US8948411B1 (en) 2014-02-18 2015-02-03 Scott A. Moser Ergonomic tubular anechoic chambers for use with a communication device and related methods
US9614945B1 (en) 2014-02-18 2017-04-04 Quiet, Inc. Anti-noise canceling headset and related methods
US11963572B2 (en) 2019-02-26 2024-04-23 Zeronoise Ltd Apparatus to acquire and process images for a helmet, corresponding helmet and method to acquire and process images
IT201900006908A1 (it) * 2019-05-16 2020-11-16 Locatelli S P A Casco
IT201900006914A1 (it) * 2019-05-16 2020-11-16 Locatelli S P A Casco

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CH656997A5 (en) * 1982-05-21 1986-07-31 Krauss Innovatron Speech device for installation in a crash helmet for vehicle users, in particular motor cyclists
GB9315500D0 (en) * 1993-07-27 1993-09-08 Central Research Lab Ltd A sound recording system
US6075857A (en) * 1997-09-11 2000-06-13 Ooltewah Manufacturing, Inc. Motor cycle helmet headset
ITMI992366A1 (it) * 1999-11-12 2001-05-14 Ludovico Fassitelli Casco di protezione jet aperto per uso automobilistico motociclisticoe sportivo in genere con prolungamento della parte laterale con funzio
US20110103634A1 (en) * 2009-11-02 2011-05-05 Blueant Wireless Pty Limited System and method for mechanically reducing unwanted wind noise in an electronics device

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Publication number Publication date
EP2674048A1 (fr) 2013-12-18
ITUD20120110A1 (it) 2013-12-12

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