EP1137317A1 - Unite de haut-parleur - Google Patents

Unite de haut-parleur Download PDF

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Publication number
EP1137317A1
EP1137317A1 EP00964658A EP00964658A EP1137317A1 EP 1137317 A1 EP1137317 A1 EP 1137317A1 EP 00964658 A EP00964658 A EP 00964658A EP 00964658 A EP00964658 A EP 00964658A EP 1137317 A1 EP1137317 A1 EP 1137317A1
Authority
EP
European Patent Office
Prior art keywords
speaker device
lamp
voice coil
light emitting
diaphragm
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.)
Withdrawn
Application number
EP00964658A
Other languages
German (de)
English (en)
Inventor
Hideki Sony Corporation MINAMI
Hachishiro Sony Corporation KOBAYASHI
Toshio Sony Corporation HIROSAWA
Hiroshi Sony Corporation KOIZUMI
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of EP1137317A1 publication Critical patent/EP1137317A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • H04R5/023—Spatial or constructional arrangements of loudspeakers in a chair, pillow
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/028—Casings; Cabinets ; Supports therefor; Mountings therein associated with devices performing functions other than acoustics, e.g. electric candles

Definitions

  • the present invention relates to a speaker device, and particularly relates to a speaker device for vibrating a diaphragm in response to an electrical signal to produce the sound.
  • a loudspeaker is widely used as a conversion means for converting an electrical signal into the sound.
  • a dynamic speaker is designed so that a voice coil wound about a bobbin is disposed within a gap of a magnetic circuit constituting a driving means, the vibration in a direction of axis received by the voice coil is transmitted to the diaphragm, whereby the vibration in response to the electrical signal is produced by the diaphragm to produce the sound in response to the electrical signal.
  • the conventional loudspeaker is merely used to produce the sound.
  • a speaker device provided with a lamp or the like as illuminations has been also proposed.
  • a driving circuit such as a lamp is independently of a driving circuit of the speaker, thus requiring an external power source.
  • brightness is not always varied according to a stress of an electrical signal for driving the loudspeaker.
  • the present invention has been accomplished in view of the actual circumstances as noted above with respect to prior art. It is an object of the present invention to provide a speaker device adapted to produce, along with the sound, light which is varied in brightness in response to an electrical signal for driving a loudspeaker.
  • a speaker device for vibrating a diaphragm in response to an electrical signal to produce the sound, including a light emitting means which varies in brightness according to a stress of the electrical signal.
  • the light emitting means may be disposed here forward of a driving means of the diaphragm.
  • a light guiding plate may be disposed forward of the light emitting means so as to guide light forward through a transparent part of the light guiding plate.
  • a center cap of the loudspeaker is constituted by the light guiding plate, and light from the light emitting means is guided from the interior of the center cap to the outer peripheral side so as to illuminate the diaphragm.
  • the driving means of the diaphragm may be constituted by a voice coil, and a pole piece internally of the voice coil may constitute a reflector of the light emitting means.
  • the light emitting means may be arranged so that the light emitting means is cooled by an air flow generated by the vibration of the diaphragm. Moreover, the light emitting means may be connected in series to the voice coil constituting the driving means of the diaphragm.
  • the speaker device includes a voice coil comprising a plurality of coils, and a protective element connected to each of the coils.
  • the speaker device includes a voice coil comprising two coils, a lamp connected to one coil, and a breaker connected to the other coil.
  • the speaker device includes a voice coil comprising a plurality of coils, a lamp connected in series to a first coil out of the plurality of coils to serve as a protective circuit, and a changeover switch connected between a second coil out of the plurality of coils and a lamp to switch (changeover) the state into one state that a current flowing through the second coil passes through a lamp, and the other state that it does not pass therethrough.
  • the speaker device vibrates a diaphragm in response to an electrical signal to produce the sound, and in which a light emitting means emits light, brightness of which varies according to a stress of the electrical signal.
  • FIG. 1 is a side view of the interior of a station wagon showing a mounting of a speaker device.
  • FIG. 2 is a perspective view of main parts showing a mounting of a speaker box.
  • FIG. 3 is a side view of the interior of a cargo vehicle showing a mounting of a speaker box.
  • FIG. 4 is a side view of a mini-van showing a mounting of a speaker box.
  • FIG. 5 is a longitudinal sectional view showing a construction of a speaker device.
  • FIG. 6 is an external perspective view of a center cap.
  • FIG. 7 is a rear elevation of a center cap.
  • FIG. 8 is a circuitry view showing a connection between a voice coil and a lamp.
  • FIG. 9 is a circuitry view showing a connection between a voice coil and a lamp according to a second embodiment.
  • FIG. 10 is a circuitry view showing a connection between a voice coil and a lamp according to a third embodiment.
  • FIG. 11 is a circuitry view showing a connection between a voice coil and a lamp according to a modified embodiment.
  • the speaker device to which the present invention is applied is designed so that a lamp is connected in series to a voice coil of a loudspeaker, and the lamp emits light while varying brightness in response to a driving current of the loudspeaker.
  • the lamp may be used, here, such that the former is arranged on a pole piece of a magnetic circuit of the loudspeaker, and light is guided forward with the front side of the pole piece being a reflecting surface.
  • a center cap of the loudspeaker may be molded from a resin through which light permeates, light is guided forward through a transparent part of the center cap, the center cap serves for a light guiding plate to guide light to the outer peripheral side thereof so as to illuminate a cone part of the speaker. Further, air internally of the center cap may be replaced with open air by the vibration of the speaker, whereby the lamp arranged on the pole piece is cooled.
  • the speaker device not only produces the sound but also produce light, and moreover, varies brightness thereof according to a driving current of the loudspeaker. That is, a special circuit for causing brightness of the lamp to vary need not be provided.
  • the voice coil of the loudspeaker is constituted by a plurality of, for example, two coils, to which protective circuits different in specific characteristic are respectively connected.
  • the voice coil of the loudspeaker is constituted by a plurality of, for example, two coils, and a lamp is connected to one voice coil whereas a breaker is connected to the other coil. Then, when the breaker is operated, an amount of light emission increases to thereby notify a person of the operation of protection and notify of the presence of the excessive great input.
  • the lamp glitters to thereby increase an impedance, that is, the lamp serves for a lamp fuse to prevent an excessively great input relative to the loudspeaker.
  • FIGS. 1 and 2 are, in which the present invention is applied to a speaker device for low sound loaded on an automobile, a side view of the interior of a station wagon having the speaker device mounted, and a perspective view of main parts showing a specific mounting form of the speaker device, respectively.
  • the speaker device according to the present invention comprises, as shown in FIGS. 1 and 2, a speaker box 10, and a loudspeaker 11 having a large aperture received into the speaker box 10. It is noted that the speaker box 10 is mounted through metal fittings 15 at the rear of a rear seat 14 of a station wagon, as shown in FIG. 2, for example.
  • the position of mounting the speaker box 10 is not always limited to such a position, but the speaker box 10 may be mounted at a suitable position within the automobile.
  • the speaker box 10 may be mounted on a floor panel 16 at the rear of a rear seat 14 of a cargo vehicle.
  • the speaker box 10 may be mounted below the rear seat 14 of a mini-van, as shown in FIG. 4, for example.
  • the loudspeaker 11 is provided with, as shown in FIG. 5, a frame 20, and a plate 21 of which center part is open is secured on the proximal end side of the frame 20.
  • a ring-like magnet 22 formed from a permanent magnet.
  • a yoke 23 On the rear side of the magnet. 22 is secured a yoke 23.
  • a pole piece 24 is provided, on the yoke 23, so as to be projected toward the center part thereof.
  • a bobbin 28 is disposed in an air gap between the outer peripheral surface of the pole piece 24 and the open part of the plate 21.
  • a voice coil 29 is wound about the bobbin 28.
  • the bobbin 28 is connected to a diaphragm 30, and a damper 31 having a concentric zigzagged pattern is connected between the part of the bobbin 28 on the center side of the diaphragm 30 and the part of the bobbin 28 of the frame 20.
  • the bobbin 28 about which the voice coil 29 is wound receives force in a direction of axis thereof accordingly, by which force the bobbin 28 moves in a direction of axis, that is, in a lateral direction.
  • This movement is transmitted to the diaphragm 30 connected with the bobbin 28, whereby the diaphragm 30 vibrates in response to an electrical signal to produce the sound.
  • the speaker device to which the present invention is applied is provided with a center cap 34 on the front side of the diaphragm 30, as shown in FIG. 5.
  • the center cap 34 is formed of a transparent synthetic resin, the rear surface of which is coated with a shielding coating to thereby shield a light.
  • the shielding coating is not coated on the whole rear surface of the center cap 34, but for example, as shown in FIGS. 6 and 7, the coating is not coated on a fixed region 40 to form a transparent part 40 not coated with a coating, and the transparent part 40 guides light forward, that is, the light permeates through the transparent part 40.
  • a through-hole 35 is provided in the center part of the pole piece 24 disposed in the center part of the loudspeaker 11, and a lamp 36 is received in the through-hole 35. Accordingly, when the lamp 36 emits light, the light permeates forward through the transparent part 40 of the center cap 34.
  • the center cap 34 itself serves as a light guiding means, that is, a light guiding path, and the light is guided thereinto so that the diaphragm 30 glitters.
  • the face of the pole piece 24 opposite to the center cap 34 forms a reflector to reflect light, which is radiated in the direction opposite to the center cap 34 from the lamp 36, on the center cap side.
  • the lamp 36 is cooled by an air flow generated by the vibration of the diaphragm 30.
  • the transparent part 40 of the center cap 34 serves for a through-hole to form a vent so that air internally of the center cap 24 may be replaced.
  • FIG. 8 is a view showing a connecting relationship between lamp 36 and a voice coil 29.
  • the voice coil 29 and the lamp 36 are connected in series with each other, both ends of which are connected to a signal source 43.
  • the lamp 36 is formed from a lamp of which brightness varies according to the flowing current, and when an amount of current increases, the brightness of the lamp 36 becomes high. Accordingly, brightness of he lamp 36 varies according to a stress of an electrical signal, and the variation of brightness can be confirmed from the front through the transparent part 40 of the center cap 34. That is, the speaker device emits light by which brightness varies along with the sound in response to the electrical signal.
  • the voice coil 29 comprises a first voice coil 29a, and a second voice coil 29b.
  • the first voice coil 29a is higher in impedance than that of the second voice coil 29b.
  • a breaker 42 is connected in series to the voice coil 29a, a lamp 36 is connected in series to the voice coil 29b, and the voice coil 29a and the voice coil 29b are connected in parallel to the signal source 43.
  • both the voice coil 29a and 29b are driven.
  • a driving current exceeds a proper value
  • the lamp 36 connected to the second voice coil 29b emits light whereby the impedance of the lamp 36 rises. That is, the lamp 36 serves as a lamp fuse so that the impedance of a circuit having the second voice coil 29b and the lamp 36 connected in series increases.
  • a current flowing through the second voice coil 36 decreases, and a current flowing through the first voice coil29a increases; that is, currents flowing through the first voice coil 29a and the second voice coil 29b are balanced.
  • the breaker 42 connected to the first voice coil 29a is operated whereby the circuit on the voice coil 29a side is cut off. Thereby, a higher current flows into the second voice coil 29b so that the light emitting amount of the lamp 36 increases, because of which the impedance of the lamp 36 further rises to correspond to the excessively great input. In this case, brightness of the lamp 36 abnormally rises to thereby enable notifying a user of the fact that the protective circuit comprising the breaker 42 is operated
  • a protective circuit like the breaker 42 is used, even if the breaker 2 is cut off to make the protection active, the second voice coil 29b is driven, and the sound is not interrupted.
  • a plurality of lamps 36 is used instead of one, which lamps 36 are connected in series. By doing so, impedance of a circuit comprising a plurality of lamps connected in series can be adjusted to a suitable value.
  • a voice coil 29 comprises a pair of voice coils 29a and 29b, and a lamp 36 is connected in series to one voice coil 29a.
  • Breakers 42a and 42b are respectively connected to opposite ends of the lamp 36, and the other ends of the breakers 42a and 42b are respectively connected to a contact A and a contact B of a changeover switch 46.
  • a fixed contact C of the changeover switch 46 is connected to one end of the other voice coil 29b.
  • the lamp 36 in the speaker device shown in FIG. 10 is divided into two lamps 36a and 36b, which are connected in series.
  • Other constructions are the same as the speaker device shown in FIG. 10. Accordingly, the impedance of the whole speaker device can be made higher by the lamps 36a and 36b.
  • a speaker device for vibrating a diaphragm in response to an electrical signal to produce the sound, comprising a light emitting means which varies in brightness according to a stress of an electrical signal. Accordingly, the speaker device not only produces the sound but also produces light. Further, the brightness varies according to a stress of an electrical signal.
  • a voice coil comprises two coils, a lamp is connected to one coil, and a breaker is connected to the other coil. Accordingly, in the speaker device, the lamp as a light emitting means serves as a protective circuit. Further, even if an excessive high driving current is input to cut off the breaker, the voice coil to which the lamp is connected is driven, and therefore, the sound is not interrupted.
  • the speaker device comprises a voice coil comprising a plurality of coils, a lamp connected in series to a first coil out of the plurality of coils to serve as a protective circuit, and a changeover switch connected between a second coil out of the plurality of coils and a lamp to switch (changeover) the state into one state that a current flowing through the second coil passes through a lamp, and the other state that it does not pass therethrough.
  • the protection of the voice coil can be achieved by the lamp, and the brightness of the lamp can be adjusted according to the switching of the changeover switch.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
EP00964658A 1999-10-06 2000-10-04 Unite de haut-parleur Withdrawn EP1137317A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP28600499A JP4240177B2 (ja) 1999-10-06 1999-10-06 スピーカ装置
JP28600499 1999-10-06
PCT/JP2000/006917 WO2001026414A1 (fr) 1999-10-06 2000-10-04 Unite de haut-parleur

Publications (1)

Publication Number Publication Date
EP1137317A1 true EP1137317A1 (fr) 2001-09-26

Family

ID=17698770

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00964658A Withdrawn EP1137317A1 (fr) 1999-10-06 2000-10-04 Unite de haut-parleur

Country Status (8)

Country Link
EP (1) EP1137317A1 (fr)
JP (1) JP4240177B2 (fr)
KR (1) KR20010080678A (fr)
CN (1) CN1327703A (fr)
BR (1) BR0007193A (fr)
CA (1) CA2353595A1 (fr)
HU (1) HUP0104783A3 (fr)
WO (1) WO2001026414A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7212648B2 (en) 2002-03-15 2007-05-01 Matsushita Electric Industrial Co., Ltd. Loudspeaker system in which a diaphragm panel is driven by an electromechanical acoustic converter

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3865244B2 (ja) * 2002-03-15 2007-01-10 松下電器産業株式会社 スピーカシステム
JP3873990B2 (ja) * 2004-06-11 2007-01-31 セイコーエプソン株式会社 超音波トランスデューサ及びこれを用いた超音波スピーカ
JP5020682B2 (ja) * 2007-03-30 2012-09-05 ミネベア株式会社 スピーカ
KR101113080B1 (ko) * 2010-05-14 2012-02-16 유연성 스피커를 이용한 진동신호 발생 장치 및 그 제어장치
KR102022285B1 (ko) 2013-01-04 2019-09-18 삼성전자주식회사 스피커

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5844717Y2 (ja) * 1979-04-18 1983-10-11 三菱電機株式会社 スピ−カ保護回路
JPS61119488U (fr) * 1985-01-08 1986-07-28
JPH028282U (fr) * 1988-06-28 1990-01-19

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0126414A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7212648B2 (en) 2002-03-15 2007-05-01 Matsushita Electric Industrial Co., Ltd. Loudspeaker system in which a diaphragm panel is driven by an electromechanical acoustic converter

Also Published As

Publication number Publication date
CA2353595A1 (fr) 2001-04-12
HUP0104783A2 (hu) 2002-03-28
KR20010080678A (ko) 2001-08-22
JP2001112076A (ja) 2001-04-20
BR0007193A (pt) 2001-09-04
HUP0104783A3 (en) 2002-04-29
JP4240177B2 (ja) 2009-03-18
WO2001026414A1 (fr) 2001-04-12
CN1327703A (zh) 2001-12-19

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