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公开(公告)号：JPH09205694A
公开(公告)日：1997-08-05
申请号：JP26666796
申请日：1996-09-17
Applicant: TOA CORP
Inventor： YOSHIOKA TSUTOMU , KUBOTA YUJI , IWAYAMA TAKESHI
Abstract: PROBLEM TO BE SOLVED: To surely prevent production of rust or improper contact without a dripped cable terminal of a speaker box due to rainwater or the like and to easily and quickly attain connection. SOLUTION: A recessed part 32 is formed to a main body rear side, a speaker box main body 30 has a cable terminal 34 in the recessed part 32 and a cover 36 is used to fitted to the recessed part 32 in a prescribed direction, a notch for a speaker cable is provided to a lower part of the cover 36 and lock members 40, 42 to be projected from the main body rear side are provided respectively to the upper part and the lower part of the cable terminal 34, clip members 44, 46 to clip the lock members 40, 42 from the upper and lower sides are provided to the inner side of the cover 36 and elastic bodies 48, 50 made of a rubber, a sponge or a soft plastic or the like are fitted to the inside of the members 44, 46. In this case, projections 52, 54 are fitted to the tip of the lock members 40, 42 so that the tip of the lock members 40, 42 is intruded in the elastic bodies 48, 50.
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公开(公告)号：JP2004173007A
公开(公告)日：2004-06-17
申请号：JP2002337104
申请日：2002-11-20
Applicant: Toa Corp , ティーオーエー株式会社
Inventor： IWAYAMA TAKESHI , NISHINO TAKASHI
Abstract: PROBLEM TO BE SOLVED: To solve the problem that a cover easily falls off from an instrument main body in the case that attaching work is ended before the engagement of a cover side engaging part and a main body side engaging part is not completed though the cover side engaging part is put on the main body side engaging part in a structure where the cover is attached to the instrument main body directly attached to a plane part.
SOLUTION: The instrument main body (speaker system main body) 10 is provided with the main body side engaging part 20 and the cover 40 is provided with the cover side engaging part 50. The main body side engaging part 20 is provided with a backward surface 22, a first projection part 23 projected behind the backward surface 22 on the extension direction base end of the backward surface 22 and a second projection part 27 projected behind the backward surface 22 on the extension direction tip of the backward surface 22. The cover side engaging part 50 is provided with a forward surface 52 and a third projection part 53 projected in front of the forward surface 52 on the extension direction tip of the forward surface 52.
COPYRIGHT: (C)2004,JPO-
公开(公告)号：JPH11313387A
公开(公告)日：1999-11-09
申请号：JP12071898
申请日：1998-04-30
Applicant: TOA CORP
Inventor： YOSHIOKA TSUTOMU , FUKUNAKA YASUHIRO , KUBOTA YUJI , IWAYAMA TAKESHI
Abstract: PROBLEM TO BE SOLVED: To control a sound pressure level (polar pattern) in every loudspeaking direction. SOLUTION: A sound outputted from a speaker driver 2 is fed to a horn 4 formed to be nearly flat through a sound guide pipe 3 and the sound is sounded from an opening 45 of the horn 4. Moreover, the sound guide 3 is coupled with an upper face of the horn 4 and the shape of the coupled part is formed to be a slender rectangle. Thus, it is equivalent to it that a straight line sound source, that is, a linear sound source is formed as a sound supply source to the horn 4. In this state, the loudspeaking distribution of sound emitted from the linear sound source, that is, the directivity is changed by changing the coupling position and the coupling angle or the like of the sound guide 3 with respect to the horn 4.
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公开(公告)号：JPH09266383A
公开(公告)日：1997-10-07
申请号：JP27190396
申请日：1996-09-20
Applicant: TOA CORP
Inventor： YOSHIOKA TSUTOMU , KUBOTA YUJI , IWAYAMA TAKESHI
Abstract: PROBLEM TO BE SOLVED: To provide an electrical device box from which an electrical device cable can be pulled out in its any direction and thus which can increase its mounting flexibility and can allow user's easy and quick wiring works. SOLUTION: The electrical device box comprises an electrical device box body 30 having a cable terminal 34 provided at its rear face and a cover 36 fitted onto the rear side of the electrical device box body 30 to cover the cable terminal 34. The cover 36 can be fitted onto the rear face of the electrical device box body 30 at least from two directions. Even when the cover 36 is fitted onto the rear face of the box body 30 in any one of the two directions, an outer face of the cover 36 can be continuously connected to an outer surface of the box body 30.
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公开(公告)号：JP2004193749A
公开(公告)日：2004-07-08
申请号：JP2002356719
申请日：2002-12-09
Applicant: Toa Corp , ティーオーエー株式会社
Inventor： IWAYAMA TAKESHI , NISHINO TAKASHI
IPC: H04R1/34
Abstract: PROBLEM TO BE SOLVED: To provide a speaker system in which directivity can be widened furthermore.
SOLUTION: The wide directivity speaker system 1 comprises a cone type speaker unit 2, and a constriction member 10A. The constriction member 10A is provided with a central hole 11 and a peripheral hole 12 on the outside thereof. An annular shielding part 19 is formed on the radial outside of the central hole 11 and on the radial inside of the peripheral hole 12 in the constriction member 10A. Radial outer end of the shielding part 19 is located at the substantially intermediate position between the radial outer end of the central hole 11 and the radial outer end of the peripheral hole 12 or at a position radially outside of the intermediate position.
COPYRIGHT: (C)2004,JPO&NCIPI-
Patent Agency Ranking
公开(公告)号：JP2009147951A
公开(公告)日：2009-07-02
申请号：JP2009000340
申请日：2009-01-05
Applicant: Toa Corp , ティーオーエー株式会社
Inventor： IWAYAMA TAKESHI
Abstract: PROBLEM TO BE SOLVED: To obtain a fixed directivity in a lower frequency in a speaker system, using a horn of a fixed directivity, frequently used in combination with a box speaker having a built-in woofer unit.
SOLUTION: The speaker system 10 is provided with an enclosure 20, a first speaker unit 30 for a lower range, and a plurality of second speaker units 31, 32 and 33 for a high range. The enclosure 20 has a front plate unit 21 as a baffle plate and a rear plate unit 22. The length of the rear plate unit 22 along a first direction perpendicular to the longitudinal direction is shorter than that of the front plate unit 21 along the first direction. The first speaker unit 30 and the second speaker units, 31, 32 and 33 are mounted on the front plate unit 21. The second speaker units 31, 32 and 33 are juxtaposed along the first direction. The second speaker units 31, 32 and 33 have their diaphragms positioned near the front plate unit 21 in the longitudinal direction.
COPYRIGHT: (C)2009,JPO&INPITAbstract translation: 要解决的问题：为了在扬声器系统中获得固定方向性，使用固定方向性的喇叭，经常与具有内置低音单元的盒式扬声器结合使用。 解决方案：扬声器系统10设置有用于较低范围的外壳20，第一扬声器单元30和用于高范围的多个第二扬声器单元31,32和33。 外壳20具有作为挡板的前板单元21和后板单元22.沿着与纵向方向垂直的第一方向的后板单元22的长度比沿着第一侧的前板单元21的长度短 方向。 第一扬声器单元30和第二扬声器单元31,32和33安装在前板单元21上。第二扬声器单元31,32和33沿着第一方向并置。 第二扬声器单元31,32和33的隔膜在纵向方向上位于前板单元21附近。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2003153366A
公开(公告)日：2003-05-23
申请号：JP2001343233
申请日：2001-11-08
Applicant: TOA CORP
Inventor： IWAYAMA TAKESHI , YOSHIOKA TSUTOMU
IPC: H04R1/30
Abstract: PROBLEM TO BE SOLVED: To reduce the length of a horn without increasing the opening diameter of the horn and reducing a directional angle. SOLUTION: A corn speaker 10 is provided in a horn 2 having an opening on the front. A directivity controller 12 is provided at the front as compared with the corn speaker 10 in the horn 2. A front end 15 in the directional controller 12 is arranged so that it does not project from the front of the horn 2. Then, the front end section 15 in the directivity controller 12 is formed to be thinner than the rear end section located at the side of the corn speaker 10 in the directivity controller 12.
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公开(公告)号：JP2000253474A
公开(公告)日：2000-09-14
申请号：JP5462399
申请日：1999-03-02
Applicant: TOA CORP
Inventor： TAKAGI TSUYOSHI , KUBOTA YUJI , IWAYAMA TAKESHI
Abstract: PROBLEM TO BE SOLVED: To provide a speaker which is capable of adjusting the emission direction of sound and capable of waterproofing easily without damaging the peripheral design. SOLUTION: This device is equipped with a mounting hardware 2 which is disk-shaped and one side of which is fixed to an installation surface. A speaker body 3 arranged in a way that an envelope is arranged such that the back side of the envelope is abutted to the front side opposite to an installation surface of the mounting hardware. Its sound emission direction central axis 26 crosses a center line 25 of a speaker body vertical to the back side at a specified angle θ. A combining means 4 can attach and detach the speaker body 3 arranged body on the front side of the mounting hardware 2 to and from the mounting hardware 2 and can changed an installation position to a desired rotation position around the central line and fix it. The combining means 4 consists of an engagement part 41 formed on an outer peripheral part of the mounting hardware 2 and an engagement hardware 42 which is provided at plural positions on the outer peripheral part near the back side of the speaker body 3 and is freely engageable with and detachable from the engagement part of the mounting hardware 2 in a state where the speaker body back side is abutted to the mounting hardware front side. The device is provided with a fist and a second packings 47 and 48. A mesh cover 27 of dome shape is provided as well.
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公开(公告)号：JPH0927999A
公开(公告)日：1997-01-28
申请号：JP20055795
申请日：1995-07-12
Applicant: TOA CORP
Inventor： YOSHIOKA TSUTOMU , KUBOTA YUJI , FUKUNAKA YASUHIRO , IWAYAMA TAKESHI , OTONO TOORU
Abstract: PROBLEM TO BE SOLVED: To check the polarity of a speaker line without being affected by a device in use and an operating environment. SOLUTION: First and second module terminals 38, 40 of a check device 36 are connected between lines 26, 28 of a speaker 20. Darlington connection transistors(TRs) 42, 44 are connected between the module terminals 38, 40 via a resistor 46 in the check device 36. Resistors 52, 54 are connected in series between the module terminals 38, 40 and a parallel circuit consisting of a resistor 56 and a diode 58 is connected between an interconnecting point A and a base of the TR 42. A capacitor 50 is connected between the base of the TR 42 and the 2nd module terminal 40. A charging time constant of the capacitor 50 is longer the longest period of an audible frequency signal fed from an amplifier 30 to the speaker lines 26, 28 and a discharge time constant is smaller than the charging time constant.
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公开(公告)号：JP2006020257A
公开(公告)日：2006-01-19
申请号：JP2004202079
申请日：2004-07-08
Applicant: Toa Corp , ティーオーエー株式会社
Inventor： IWAYAMA TAKESHI
CPC classification number: H04R1/26 , H04R27/00 , H04R2201/401
Abstract: PROBLEM TO BE SOLVED: To provide a speaker system and speaker cluster system in which a fixed directivity is obtained over a wide frequency range in spite of compactness since a fixed directivity of a speaker system over a frequency range as wide as possible may be desired, in a speaker system using a horn of a fixed directivity and frequently used in combination with a box speaker having a built-in woofer unit, to solve the problem wherein this system is large-sized, and further, to meet another desire to acquire the fixed directivity in a lower frequency.
SOLUTION: A speaker system 10 is provided with an enclosure 20, a first speaker unit 30 for a lower range, and a plurality of second speaker units 31, 32 and 33 for a high range. The enclosure 20 has a front plate unit 21 as a baffle plate and a rear plate unit 22. The length of the rear plate unit 22 along a first direction perpendicular to the longitudinal direction is shorter than that of the front plate unit 21 along the first direction. The first speaker unit 30 and the second speaker units 31, 32 and 33 are mounted on the front plate unit 21. The second speaker units 31, 32 and 33 are juxtaposed along the first direction. The second speaker units 31, 32 and 33 have their diaphragms positioned near the front plate unit 21 in the longitudinal direction.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：为了提供一种扬声器系统和扬声器群系统，其中尽管紧凑性，在宽频率范围内获得固定的方向性，因为扬声器系统在尽可能宽的频率范围内的固定方向性可以 期望在使用具有固定方向性的喇叭并经常与具有内置低音单元的盒式扬声器组合的扬声器系统中，以解决该系统大型化的问题，并且还满足另一个期望 以更低的频率获取固定方向性。 解决方案：扬声器系统10设置有外壳20，用于较低范围的第一扬声器单元30和用于高范围的多个第二扬声器单元31,32和33。 外壳20具有作为挡板的前板单元21和后板单元22.沿着与纵向方向垂直的第一方向的后板单元22的长度比沿着第一侧的前板单元21的长度短 方向。 第一扬声器单元30和第二扬声器单元31,32和33安装在前板单元21上。第二扬声器单元31,32和33沿着第一方向并置。 第二扬声器单元31,32和33的隔膜在纵向方向上位于前板单元21附近。 版权所有（C）2006，JPO＆NCIPI
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