JPS54160228A - Electrodynamic speaker - Google Patents

Electrodynamic speaker

Info

Publication number
JPS54160228A
JPS54160228A JP6934678A JP6934678A JPS54160228A JP S54160228 A JPS54160228 A JP S54160228A JP 6934678 A JP6934678 A JP 6934678A JP 6934678 A JP6934678 A JP 6934678A JP S54160228 A JPS54160228 A JP S54160228A
Authority
JP
Japan
Prior art keywords
gap
diaphragm
yoke
magnet
constitution
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.)
Granted
Application number
JP6934678A
Other languages
Japanese (ja)
Other versions
JPS5828797B2 (en
Inventor
Noboru Mikami
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP53069346A priority Critical patent/JPS5828797B2/en
Publication of JPS54160228A publication Critical patent/JPS54160228A/en
Publication of JPS5828797B2 publication Critical patent/JPS5828797B2/en
Expired 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

Abstract

PURPOSE:To enhance the radiation effect of the Joule heat generated in a printed voice coil, prevent the breakdown of the abovementioned coil and diaphragm occuring in high temperature and achieve higher input resistance by letting the specific metal fibers contact the diaphragm as sound absorbing material. CONSTITUTION:A magnet 12 is sandwiched between a centerpole 10 and a yoke 11 and a magnetic gap 13 is formed between the pole 10 and yoke 11 protruded to the upper part of the magnet 12. A film-form diaphragm 14 such as of polymide film is coupled by affixing or the like to the top face of the magnetic circuit 9 of such constitution, and a printed voice coil 15 such as the one formed by vapor deposition of Al is formed on the top face opposing to the gap 13 of the plate 14. Sound absorbing material 16 being non-magnetic metal fibers of superior heat conductivity such as stainless steel fibers is disposed in the gap 13 so as to contact the bottom face of the plate 14.
JP53069346A 1978-06-07 1978-06-07 electrodynamic speaker Expired JPS5828797B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53069346A JPS5828797B2 (en) 1978-06-07 1978-06-07 electrodynamic speaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53069346A JPS5828797B2 (en) 1978-06-07 1978-06-07 electrodynamic speaker

Publications (2)

Publication Number Publication Date
JPS54160228A true JPS54160228A (en) 1979-12-18
JPS5828797B2 JPS5828797B2 (en) 1983-06-17

Family

ID=13399884

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53069346A Expired JPS5828797B2 (en) 1978-06-07 1978-06-07 electrodynamic speaker

Country Status (1)

Country Link
JP (1) JPS5828797B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5185729U (en) * 1974-12-28 1976-07-09

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5185729U (en) * 1974-12-28 1976-07-09

Also Published As

Publication number Publication date
JPS5828797B2 (en) 1983-06-17

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