JPS57132082A - Wristwatch with radio set - Google Patents

Wristwatch with radio set

Info

Publication number
JPS57132082A
JPS57132082A JP56018231A JP1823181A JPS57132082A JP S57132082 A JPS57132082 A JP S57132082A JP 56018231 A JP56018231 A JP 56018231A JP 1823181 A JP1823181 A JP 1823181A JP S57132082 A JPS57132082 A JP S57132082A
Authority
JP
Japan
Prior art keywords
speaker
case
glass
electric field
radio set
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
JP56018231A
Other languages
Japanese (ja)
Inventor
Yoshihiko Hirayama
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP56018231A priority Critical patent/JPS57132082A/en
Publication of JPS57132082A publication Critical patent/JPS57132082A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G21/00—Input or output devices integrated in time-pieces
    • G04G21/04—Input or output devices integrated in time-pieces using radio waves

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

PURPOSE:To realize a microminiature radio set having a stable high-pitched tone, by shielding a speaker. CONSTITUTION:The low frequency signals having different polarities emerge at electrodes C1 and C2 of a voltage drive type speaker 7. In this case, an AC electric field is caused around the speaker 7. A transparent electrode 10 is attached to the inside of the glass 5 and earthed via an earth contact spring 11. On the other hand, a case 2 is earthed by a metal to have a shielding effect. Accordingly the electric field produced by the speaker 7 is enclosd inside the glass 5 and the case 2.
JP56018231A 1981-02-10 1981-02-10 Wristwatch with radio set Pending JPS57132082A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56018231A JPS57132082A (en) 1981-02-10 1981-02-10 Wristwatch with radio set

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56018231A JPS57132082A (en) 1981-02-10 1981-02-10 Wristwatch with radio set

Publications (1)

Publication Number Publication Date
JPS57132082A true JPS57132082A (en) 1982-08-16

Family

ID=11965890

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56018231A Pending JPS57132082A (en) 1981-02-10 1981-02-10 Wristwatch with radio set

Country Status (1)

Country Link
JP (1) JPS57132082A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4916439A (en) * 1987-01-05 1990-04-10 Eac Technologies Corp. Remote display arrangement for appliances
JPH0470100A (en) * 1990-07-09 1992-03-05 Sumitomo Special Metals Co Ltd Transparent speaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4916439A (en) * 1987-01-05 1990-04-10 Eac Technologies Corp. Remote display arrangement for appliances
JPH0470100A (en) * 1990-07-09 1992-03-05 Sumitomo Special Metals Co Ltd Transparent speaker

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