JPS5497457A - Alarming device of watch - Google Patents

Alarming device of watch

Info

Publication number
JPS5497457A
JPS5497457A JP368178A JP368178A JPS5497457A JP S5497457 A JPS5497457 A JP S5497457A JP 368178 A JP368178 A JP 368178A JP 368178 A JP368178 A JP 368178A JP S5497457 A JPS5497457 A JP S5497457A
Authority
JP
Japan
Prior art keywords
piezoelectric elements
electrode layer
circuit substrate
surface glass
piezoelectric
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
JP368178A
Other languages
Japanese (ja)
Inventor
Naoki Takahashi
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.)
Casio Computer Co Ltd
Original Assignee
Casio Computer 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 Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Priority to JP368178A priority Critical patent/JPS5497457A/en
Publication of JPS5497457A publication Critical patent/JPS5497457A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04G—ELECTRONIC TIME-PIECES
    • G04G13/00—Producing acoustic time signals
    • G04G13/02—Producing acoustic time signals at preselected times, e.g. alarm clocks
    • G04G13/021—Details

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PURPOSE:To achieve the improvement of alarming effect by mounting plural piezoelectric elements of shapes including part of imaginary lines drawing small shapes similar to the outside circumferential shape of surface glass to the surface glass. CONSTITUTION:A pair of piezoelectric elements 11 assuming semicircular plate bodies are mounted, by means of adhesive agents or the like, on both side portions sandwiching a display window 10 on the inside surface of an electrode layer 9. Connecting terminals 12 of one side are provided between the piezoelectric elememts 11 and a circuit substrate 6 and are connected to a driving circuit. Other spring connecting terminals 13 are provided between the electrode layer 9 and the circuit substrate 6 and the other end sides of the piezoelectric elements 11 are connected to the driving circuit. When a driving signal is applied from the circuit substrate 6 to the piezoelectric elements 11 via connection terminals 12, 13 and electrode layer 9, the piezoelectric elements 11 drive and therefore the surface glass 3 also integrally vibrates and is thereby effectively vibrated, whereby sufficient sound pressure may be obtained.
JP368178A 1978-01-19 1978-01-19 Alarming device of watch Pending JPS5497457A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP368178A JPS5497457A (en) 1978-01-19 1978-01-19 Alarming device of watch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP368178A JPS5497457A (en) 1978-01-19 1978-01-19 Alarming device of watch

Publications (1)

Publication Number Publication Date
JPS5497457A true JPS5497457A (en) 1979-08-01

Family

ID=11564139

Family Applications (1)

Application Number Title Priority Date Filing Date
JP368178A Pending JPS5497457A (en) 1978-01-19 1978-01-19 Alarming device of watch

Country Status (1)

Country Link
JP (1) JPS5497457A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4389123A (en) * 1979-10-18 1983-06-21 Kabushiki Kaisha Daini Seikosha Electronic alarm watch
US4392747A (en) * 1979-10-24 1983-07-12 Hitachi, Ltd. Display device structure
US4904982A (en) * 1988-02-18 1990-02-27 Outboard Marine Corporation Visual and audible warning device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4389123A (en) * 1979-10-18 1983-06-21 Kabushiki Kaisha Daini Seikosha Electronic alarm watch
US4392747A (en) * 1979-10-24 1983-07-12 Hitachi, Ltd. Display device structure
US4904982A (en) * 1988-02-18 1990-02-27 Outboard Marine Corporation Visual and audible warning device

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