JPS5436919A - Speaker - Google Patents

Speaker

Info

Publication number
JPS5436919A
JPS5436919A JP10269477A JP10269477A JPS5436919A JP S5436919 A JPS5436919 A JP S5436919A JP 10269477 A JP10269477 A JP 10269477A JP 10269477 A JP10269477 A JP 10269477A JP S5436919 A JPS5436919 A JP S5436919A
Authority
JP
Japan
Prior art keywords
speaker
center pole
radiation characteristic
sponge
durability
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
JP10269477A
Other languages
Japanese (ja)
Inventor
Tamotsu Ito
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP10269477A priority Critical patent/JPS5436919A/en
Publication of JPS5436919A publication Critical patent/JPS5436919A/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
    • H04R9/022—Cooling arrangements

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 improve the radiation characteristic of heat of a center pole and achieve the increase in the durability of the speaker by filling a sponge-form non-magnetic metal of good heat radiation characteristic in the through-hole provided in the central part of the center pole.
JP10269477A 1977-08-29 1977-08-29 Speaker Pending JPS5436919A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10269477A JPS5436919A (en) 1977-08-29 1977-08-29 Speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10269477A JPS5436919A (en) 1977-08-29 1977-08-29 Speaker

Publications (1)

Publication Number Publication Date
JPS5436919A true JPS5436919A (en) 1979-03-19

Family

ID=14334353

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10269477A Pending JPS5436919A (en) 1977-08-29 1977-08-29 Speaker

Country Status (1)

Country Link
JP (1) JPS5436919A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4757547A (en) * 1987-09-10 1988-07-12 Intersonics Incorporated Air cooled loudspeaker
WO2007117045A1 (en) * 2006-06-21 2007-10-18 Panasonic Corporation Speaker, speaker device using the speaker, and electronic equipment and vehicle using the speaker
JP2008005101A (en) * 2006-06-21 2008-01-10 Matsushita Electric Ind Co Ltd Speaker, speaker apparatus employing the same, and electronic equipment and vehicle employing this speaker
JP2008005264A (en) * 2006-06-23 2008-01-10 Matsushita Electric Ind Co Ltd Speaker, speaker apparatus employing the same, and electronic equipment and apparatus employing this speaker

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4757547A (en) * 1987-09-10 1988-07-12 Intersonics Incorporated Air cooled loudspeaker
WO2007117045A1 (en) * 2006-06-21 2007-10-18 Panasonic Corporation Speaker, speaker device using the speaker, and electronic equipment and vehicle using the speaker
JP2008005101A (en) * 2006-06-21 2008-01-10 Matsushita Electric Ind Co Ltd Speaker, speaker apparatus employing the same, and electronic equipment and vehicle employing this speaker
US8553924B2 (en) 2006-06-21 2013-10-08 Panasonic Corporation Speaker, speaker device using the same and electronic apparatus and vehicle using the speaker
JP2008005264A (en) * 2006-06-23 2008-01-10 Matsushita Electric Ind Co Ltd Speaker, speaker apparatus employing the same, and electronic equipment and apparatus employing this speaker
JP4609383B2 (en) * 2006-06-23 2011-01-12 パナソニック株式会社 Speaker, speaker device using the same, electronic device using the speaker, and vehicle

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees