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JPH01156696U - - Google Patents

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Publication number
JPH01156696U
JPH01156696U JP5255988U JP5255988U JPH01156696U JP H01156696 U JPH01156696 U JP H01156696U JP 5255988 U JP5255988 U JP 5255988U JP 5255988 U JP5255988 U JP 5255988U JP H01156696 U JPH01156696 U JP H01156696U
Authority
JP
Japan
Prior art keywords
acoustic
features
large number
disposed
utility
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
JP5255988U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP5255988U priority Critical patent/JPH01156696U/ja
Publication of JPH01156696U publication Critical patent/JPH01156696U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案実施例の断面図、第２図はロー
パスフイルタ部の要部拡大断面と等価回路との関
連図、第３図は実施例の効果を示す周波数特性図
である。 １は圧電型振動子、２は孔あき板、３は音響抵
抗体層、４はフレーム、５は保護ケースである。 FIG. 1 is a sectional view of an embodiment of the present invention, FIG. 2 is an enlarged sectional view of a main part of a low-pass filter section and an equivalent circuit, and FIG. 3 is a frequency characteristic diagram showing the effects of the embodiment. 1 is a piezoelectric vibrator, 2 is a perforated plate, 3 is an acoustic resistor layer, 4 is a frame, and 5 is a protective case.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 圧電型振動子１を有する振動系の前方に、多数
の小孔を穿設した孔あき板２と音響抵抗体層３と
が交互に複数枚積層された音響フイルタが配設さ
れていることを特徴とする圧電型スピーカ。 In front of the vibration system having the piezoelectric vibrator 1, an acoustic filter is disposed in which a plurality of perforated plates 2 having a large number of small holes and a plurality of acoustic resistor layers 3 are alternately laminated. Features a piezoelectric speaker.
JP5255988U 1988-04-18 1988-04-18 Pending JPH01156696U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5255988U JPH01156696U (en) 1988-04-18 1988-04-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5255988U JPH01156696U (en) 1988-04-18 1988-04-18

Publications (1)

Publication Number Publication Date
JPH01156696U true JPH01156696U (en) 1989-10-27

Family

ID=31278565

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5255988U Pending JPH01156696U (en) 1988-04-18 1988-04-18

Country Status (1)

Country Link
JP (1) JPH01156696U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005086220A (en) * 2003-09-04 2005-03-31 Matsushita Electric Ind Co Ltd Electroacoustic transducer and electronic device using the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56134898A (en) * 1980-02-29 1981-10-21 Siemens Ag Electroacoustic converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56134898A (en) * 1980-02-29 1981-10-21 Siemens Ag Electroacoustic converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005086220A (en) * 2003-09-04 2005-03-31 Matsushita Electric Ind Co Ltd Electroacoustic transducer and electronic device using the same

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