JPS51117615A - Portable small-sized speaker - Google Patents

Portable small-sized speaker

Info

Publication number
JPS51117615A
JPS51117615A JP4224375A JP4224375A JPS51117615A JP S51117615 A JPS51117615 A JP S51117615A JP 4224375 A JP4224375 A JP 4224375A JP 4224375 A JP4224375 A JP 4224375A JP S51117615 A JPS51117615 A JP S51117615A
Authority
JP
Japan
Prior art keywords
portable small
sized speaker
speaker
sized
portable
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.)
Pending
Application number
JP4224375A
Other languages
Japanese (ja)
Inventor
Akira Nikaido
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.)
Citizen Watch Co Ltd
Original Assignee
Citizen Watch Co Ltd
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 Citizen Watch Co Ltd filed Critical Citizen Watch Co Ltd
Priority to JP4224375A priority Critical patent/JPS51117615A/en
Publication of JPS51117615A publication Critical patent/JPS51117615A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction
    • H04R9/047—Construction in which the windings of the moving coil lay in the same plane

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

Abstract

PURPOSE:To obtain a moving-electric type speaker as large as a watch by providing a magnetic circuit and a vibration plate.
JP4224375A 1975-04-09 1975-04-09 Portable small-sized speaker Pending JPS51117615A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4224375A JPS51117615A (en) 1975-04-09 1975-04-09 Portable small-sized speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4224375A JPS51117615A (en) 1975-04-09 1975-04-09 Portable small-sized speaker

Publications (1)

Publication Number Publication Date
JPS51117615A true JPS51117615A (en) 1976-10-15

Family

ID=12630576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4224375A Pending JPS51117615A (en) 1975-04-09 1975-04-09 Portable small-sized speaker

Country Status (1)

Country Link
JP (1) JPS51117615A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01288198A (en) * 1988-05-16 1989-11-20 Sony Corp Speaker
WO2003041449A1 (en) * 2001-11-05 2003-05-15 Matsushita Electric Industrial Co., Ltd. Loudspeaker
JP2009260624A (en) * 2008-04-16 2009-11-05 Hosiden Corp Diaphragm for speaker
JP2009260623A (en) * 2008-04-16 2009-11-05 Hosiden Corp Electroacoustic transducer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01288198A (en) * 1988-05-16 1989-11-20 Sony Corp Speaker
WO2003041449A1 (en) * 2001-11-05 2003-05-15 Matsushita Electric Industrial Co., Ltd. Loudspeaker
US7020301B2 (en) 2001-11-05 2006-03-28 Matsushita Electric Industrial Co., Ltd. Loudspeaker
JP2009260624A (en) * 2008-04-16 2009-11-05 Hosiden Corp Diaphragm for speaker
JP2009260623A (en) * 2008-04-16 2009-11-05 Hosiden Corp Electroacoustic transducer

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