IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0799114
(2010-04-19)
|
등록번호 |
US-8177022
(2012-05-15)
|
우선권정보 |
JP-2009-102522 (2009-04-21); JP-2010-80917 (2010-03-31) |
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
Pillsbury Winthrop Shaw Pittman LLP
|
인용정보 |
피인용 횟수 :
2 인용 특허 :
6 |
초록
▼
Wall partitioning between outside and inside of a room has an opening portion closed with a film. Sound insulating plate, comprising a lamination of a sound reflecting plate and a sound absorbing member, is supported in opposed relation to the opening portion and at an interval from the opening port
Wall partitioning between outside and inside of a room has an opening portion closed with a film. Sound insulating plate, comprising a lamination of a sound reflecting plate and a sound absorbing member, is supported in opposed relation to the opening portion and at an interval from the opening portion. Sound transmitted from outside of the room into the room through the film is reflected from the sound reflecting plate and then diffracted via sides of the interval, defined between the sound reflecting plate and the wall, to behind the reflecting plate to reach a human listener. Thus, with a mechanical construction, sound, propagated from outside the room into the room, can be made to be heard as sound of frequency characteristics desired by a human listener present in the room.
대표청구항
▼
1. A transmitted sound control apparatus for use with a boundary surface partitioning a space and having an opening portion, wherein the boundary surface is one of a plurality of walls forming an enclosed space and a sound is transmitted into the enclosed space through the opening portion, the trans
1. A transmitted sound control apparatus for use with a boundary surface partitioning a space and having an opening portion, wherein the boundary surface is one of a plurality of walls forming an enclosed space and a sound is transmitted into the enclosed space through the opening portion, the transmitted sound control apparatus comprising: a sound insulating plate provided in the enclosed space and supported at a distance from the boundary surface and in an opposed relation to the opening portion;a support mechanism that supports the sound insulating plate in such a manner as to permit a change in a relative positional relationship of the sound insulating plate to the opening portion, the support mechanism having a rotation shaft for rotating thereabout the sound insulating plate, the rotation shaft extending normally to the sound insulating plate and the boundary surface. 2. The transmitted sound control apparatus of claim 1, wherein the sound insulating plate has a shape and is disposed on the rotation shaft such that dimensions from the rotational center of the rotation shaft to points on the perimeter of the insulating plate vary so that a surface area of the sound insulating plate opposing the opening portion is changeable by rotating the sound insulating plate. 3. The transmitted sound control apparatus of claim 1 further including a film disposed over the opening portion. 4. The transmitted sound control apparatus of claim 3 further including a tension imparting mechanism coupled to the film for controlling an amount of tension imparted to the film to vary frequency components of sound propagated through the opening portion, the tension imparting mechanism controllably pulling an outer peripheral portion of the film so as to controllably impart tension to the film. 5. The transmitted sound control apparatus of claim 1, wherein the support mechanism has a translation shaft for changing the distance between the sound insulating plate and the opening portion. 6. The transmitted sound control apparatus of claim 1, wherein a sound absorbing member is provided on a surface of the sound insulating plate opposed to the opening portion. 7. The transmitted sound control apparatus of claim 1, wherein the sound insulating plate includes a sound reflecting plate. 8. The transmitted sound control apparatus of claim 1 including a plurality of sound insulating plates which rotate in opposite directions about a rotation axis. 9. A vehicle comprising: a passenger compartment;a boundary surface partitioning the passenger compartment from a space external to the passenger compartment, the boundary surface having an opening portion; anda transmittal sound control apparatus including: a sound insulating plate supported at a distance from the boundary surface and in an opposed relation to the opening portion;a support mechanism that supports the sound insulating plate in such a manner as to permit a change in a relative positional relationship of the sound insulating plate to the opening portion, the support mechanism having a rotation shaft for rotating thereabout the sound insulating plate, the rotation shaft extending normally to the sound insulating plate and the boundary surface,wherein a sound source of the vehicle, the boundary surface and the sound insulating plate are sequentially arranged in the stated order. 10. A transmitted sound control apparatus for a vehicle, the vehicle including a wall having an opening portion, the transmitted sound control apparatus comprising; a sound insulating plate supported at a distance from the opening portion;a drive section coupled to the sound insulating plate for moving the sound insulating plate so that a surface area of the sound insulating plate opposing the opening portion is changeable;a sensor for receiving information indicative of an operating parameter of the vehicle; anda control section, responsive to the sensor and coupled to the drive section, for controlling the surface area of the sound insulating plate opposing the opening portion based on the operating parameter,wherein a sound source of the vehicle, the wall and the sound insulating plate are sequentially arranged in the stated order. 11. The sound control apparatus as claimed in claim 10, wherein the sound insulating plate is supported by a plurality of rails and the drive section moves the sound insulating plate along the plurality of rails. 12. The sound control apparatus as claimed in claim 10, wherein the sound insulating plate is supported by a support member which rotates the sound insulating plate along a plane parallel to opening portion. 13. The sound control apparatus as claimed in claim 10, wherein the operating parameter is a rotational speed of an engine of the vehicle. 14. The sound control apparatus as claimed in claim 10, wherein the operating parameter is a velocity of the vehicle. 15. The sound control apparatus as claimed in claim 10, wherein the operating parameter is an accelerator depression amount of the vehicle. 16. A transmitted sound control apparatus for use with a boundary surface partitioning a space and having an opening portion, wherein the boundary surface is one of a plurality of walls forming an enclosed space and a sound is transmitted into the enclosed space through the opening portion, the transmitted sound control apparatus comprising: a sound insulating plate provided in the enclosed space and supported at a distance from the boundary surface and in an opposed relation to the opening portion; anda support mechanism that supports said sound insulating plate in such a manner as to permit a change in a relative positional relationship of said sound insulating plate to the opening portion, the support mechanism having a rod fixed on the wall of the boundary surface and extending normally from the boundary surface to the sound insulating plate.
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