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EP3836559A1 - Flat loudspeaker - Google Patents

Flat loudspeaker Download PDF

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Publication number
EP3836559A1
EP3836559A1 EP20212136.4A EP20212136A EP3836559A1 EP 3836559 A1 EP3836559 A1 EP 3836559A1 EP 20212136 A EP20212136 A EP 20212136A EP 3836559 A1 EP3836559 A1 EP 3836559A1
Authority
EP
European Patent Office
Prior art keywords
flat
exciters
carrier
flat membrane
loudspeaker according
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
EP20212136.4A
Other languages
German (de)
French (fr)
Other versions
EP3836559C0 (en
EP3836559B1 (en
Inventor
Michael Hein
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE202019004991.6U external-priority patent/DE202019004991U1/en
Application filed by Individual filed Critical Individual
Publication of EP3836559A1 publication Critical patent/EP3836559A1/en
Application granted granted Critical
Publication of EP3836559C0 publication Critical patent/EP3836559C0/en
Publication of EP3836559B1 publication Critical patent/EP3836559B1/en
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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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/227—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  using transducers reproducing the same frequency band
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2440/00—Bending wave transducers covered by H04R, not provided for in its groups
    • H04R2440/05—Aspects relating to the positioning and way or means of mounting of exciters to resonant bending wave panels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/06—Plane diaphragms comprising a plurality of sections or layers
    • H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact

Definitions

  • the invention relates to a flat loudspeaker consisting of at least two exciters and at least one flat membrane excited by these exciters.
  • Flat speakers are, for example, from the DE 10 2005 047 300 A1 and the WO 2004/073 350 A1 known.
  • panel loudspeakers are provided with more than one exciter.
  • more than one exciter is used on a flat membrane and vibrated, this leads to vibration interference between the individual exciters in the flat membrane, which has an unfavorable effect on the sound quality of the flat speaker, especially when it comes to speech reproduction.
  • the invention is therefore based on the object of creating a flat-panel loudspeaker of the type mentioned at the outset, in which the transmission behavior of the flat-panel loudspeaker is improved in the relevant range of speech from 300 Hz to 5000 Hz.
  • the basic idea of the invention is the non-positive attachment of a material to the flat membrane, which is preferably designed as a square rod, is arranged between the flat membrane and the exciters and preferably has a higher speed than the material of the flat membrane in terms of sound propagation and as a coupling material is used between the actual flat membrane and the exciters.
  • the coupling material acts as a sound collector, which collects the vibration impulse that is generated in parallel on several exciters in the same frequency range or in different frequency ranges, and in comparison to a flat-panel loudspeaker without use such a sound collector introduces more coherently into the surface membrane.
  • the invention thus essentially consists in a sound busbar for coherent sound radiation of multiple arranged vibration exciters on acoustic surface radiators.
  • the vibration interferences between the individual exciters which according to the configuration according to the prior art have an unfavorable effect on the sound quality of the flat-panel loudspeaker, especially during speech reproduction, are shifted to high frequencies, so that the transmission behavior of the flat-panel loudspeaker in the relevant range the speech is improved from 300 Hz to 5000 Hz.
  • a panel loudspeaker with a panel diaphragm and at least two exciters acting on the panel diaphragm is proposed, at least one carrier designed as a sound collector being provided, one side of which is connected to the panel diaphragm and the side opposite the panel diaphragm to at least two exciters.
  • the carrier carries the exciter and is essentially cuboid, specifically designed as a cuboid strip.
  • the thickness of the support is preferably less than the thickness of the flat membrane, at least one support being arranged on the flat membrane in the direction of the longitudinal axis of the flat membrane.
  • at least one carrier is arranged in the longitudinal axis of the flat membrane.
  • a further carrier which extends essentially transversely to the longitudinal axis of the flat membrane, is made shorter than the first carrier.
  • the carrier preferably has a higher speed of sound propagation than the flat membrane.
  • the material or the material properties of the flat membrane and the at least one carrier are so different that the Speed of sound in the carrier is greater than in the flat membrane. Due to this property, the sound pulse generated in parallel on several exciters at the same time in the same frequency range or in different frequency ranges is introduced very coherently into the flat membrane.
  • the at least one carrier is preferably connected to the flat membrane over the entire surface.
  • the at least two exciters are only connected to the carrier in sections and thus, for example, protrude beyond the surface of the carrier.
  • the at least two exciters are connected in sections to at least one second carrier connected to the flat membrane.
  • the carriers and the exciters are arranged in such a way that a gap bridged by the exciters remains between the carriers, which are arranged parallel to one another and spaced apart from one another.
  • a simple and efficient design is achieved in that the carrier is a carbon fiber square rod.
  • the carrier is preferably linear. According to an alternative embodiment, the carrier is preferably designed in the shape of a wave in the plane parallel to the flat membrane.
  • a plurality of carriers connected to the flat membrane have a jointly controlled group of exciters connected to them.
  • the distance between exciters combined to form a group is preferably less than the distance between two exciters of different groups.
  • a plurality of carriers connected to the flat membrane each have an individually controlled group of exciters connected to them.
  • Fig. 1 shows a perspective view of the rear of a first preferred embodiment of a flat panel loudspeaker according to the invention.
  • Fig. 1 a perspective view of a flat membrane 1 with a carrier 2 designed as a sound collector and two exciters 4, 5, in which a single sound collector 2 is arranged between the flat membrane 1 and an exciter group 4, 5.
  • the carrier 2 in the longitudinal axis of the flat membrane 1 is connected to the latter over the entire area, the exciters 4, 5 being arranged evenly distributed on the carrier 2 and connected to the latter over the entire area.
  • Fig. 2 shows a perspective view of the rear of a second preferred embodiment of a flat panel loudspeaker according to the invention.
  • Fig. 2 a perspective view of a flat membrane 1 with the supports 8, 9 designed as sound collectors and two exciters 4, 5 connected to the supports 8, 9.
  • the supports 8, 9 are arranged in the longitudinal direction of the flat membrane and parallel to each other, the exciters 4, 5 connected in sections to the carriers 8, 9 and bridging the gap remaining between the carriers 8, 9 and arranged in the middle of these.
  • Fig. 3 shows a perspective view of the rear of a third preferred embodiment of a flat panel loudspeaker according to the invention.
  • Fig. 3 a perspective view of a flat membrane 1 with the carriers 10, 11 designed as sound collectors and the four exciters 4, 5, 6, 7.
  • Each carrier 10, 11 has each has one exciter group formed from two exciters 4, 5, 6, 7, which can be controlled jointly or separately.
  • Fig. 4 shows a perspective view of the rear of a fourth preferred embodiment of a flat panel loudspeaker according to the invention.
  • Fig. 4 a perspective view of a flat membrane 1 with a support 12 designed as a sound collector and two exciters 4, 5, in which the exciters 4, 5 are only partially connected to the support 12 and protrude freely above the support 12.
  • FIG. 5 a perspective view of the rear of a fifth preferred embodiment of a flat panel loudspeaker according to the invention.
  • Fig. 5 a perspective view of a flat membrane 1 with a carrier 2 designed as a sound collector and four exciters 3, 4, 5, 6, which can be combined in functional groups separately or controlled together.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Multimedia (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

Flächenlautsprecher mit einer Flächenmembran (1) und wenigstens zwei auf die Flächenmembran (1) wirkenden Excitem (3, 4, 5, 6), gekennzeichnet durch wenigstens einen als Schallsammler ausgebildeten Träger (2, 8, 9, 10, 11, 12), der mit seiner einen Seite mit der Flächenmembran (1) und mit seiner der Flächenmembran (1) gegenüberliegenden Seite mit wenigstens zwei Excitern (3, 4, 5, 6) verbunden ist.Flat speaker with a flat membrane (1) and at least two excitem (3, 4, 5, 6) acting on the flat membrane (1), characterized by at least one support (2, 8, 9, 10, 11, 12) designed as a sound collector, one side of which is connected to the flat membrane (1) and its side opposite the flat membrane (1) is connected to at least two exciters (3, 4, 5, 6).

Description

Die Erfindung betrifft einen Flächenlautsprecher bestehend aus mindestens zwei Excitern und mindestens einer von diesen Excitern erregten Flächenmembran.The invention relates to a flat loudspeaker consisting of at least two exciters and at least one flat membrane excited by these exciters.

Flächenlautsprecher sind beispielsweise aus der DE 10 2005 047 300 A1 und der WO 2004/073 350 A1 bekannt.Flat speakers are, for example, from the DE 10 2005 047 300 A1 and the WO 2004/073 350 A1 known.

Um die akustische Leistung solcher Flächenlautsprecher zu erhöhen ist bekannt, dass Flächenlautsprecher mit mehr als einem Exciter versehen werden. Werden jedoch mehr als ein Exciter auf einer Flächenmembran eingesetzt und zum Schwingen angeregt, führt das in der Flächenmembran zu Schwingungsinterferenzen zwischen den einzelnen Excitern, die sich ungünstig auf die Klangqualität des Flächenlautsprechers, insbesondere bei der Sprachwiedergabe auswirken.In order to increase the acoustic performance of such panel loudspeakers, it is known that panel loudspeakers are provided with more than one exciter. However, if more than one exciter is used on a flat membrane and vibrated, this leads to vibration interference between the individual exciters in the flat membrane, which has an unfavorable effect on the sound quality of the flat speaker, especially when it comes to speech reproduction.

Der Erfindung liegt daher die Aufgabe zugrunde, einen Flächenlautsprecher der eingangs genannten Art zu schaffen, bei dem das Übertragungsverhalten des Flächenlautsprechers im relevanten Bereich der Sprache von 300 Hz bis 5000 Hz verbessert ist.The invention is therefore based on the object of creating a flat-panel loudspeaker of the type mentioned at the outset, in which the transmission behavior of the flat-panel loudspeaker is improved in the relevant range of speech from 300 Hz to 5000 Hz.

Erfindungsgemäß wird diese Aufgabe gelöst durch den Flächenlautsprecher mit den Merkmalen von Anspruch 1. Die Unteransprüche geben vorteilhafte Ausgestaltungen der Erfindung wieder.According to the invention, this object is achieved by the flat-panel loudspeaker with the features of claim 1. The subclaims reproduce advantageous embodiments of the invention.

Grundgedanke der Erfindung gemäß einer besonders bevorzugten Ausgestaltung ist das kraftschlüssige Anbringen eines Materials auf der Flächenmembran, das vorzugsweise als Vierkantstange ausgeführt ist, zwischen der Flächenmembran und den Excitern angeordnet ist und vorzugsweise eine gegenüber dem Material der Flächenmembran höhere Geschwindigkeit bezüglich der Schallausbreitung aufweist und als Kopplungsmaterial zwischen der eigentlichen Flächenmembran und den Excitern dient. Dabei fungiert das Kopplungsmaterial als Schallsammler, der den Schwingungsimpuls, der parallel an mehreren Excitern gleichzeitig im selben Frequenzbereich oder in unterschiedlichen Frequenzbereichen erzeugt wird, sammelt und im Vergleich zu einem Flächenlautsprecher ohne Verwendung eines solchen Schallsammlers kohärenter in die Flächenmembran einleitet. Die Erfindung besteht also im Wesentlichen in einer Schallsammelschiene zur kohärenten Schallabstrahlung mehrfach angeordneter Schwingungserreger auf akustischen Flächenstrahlern.The basic idea of the invention according to a particularly preferred embodiment is the non-positive attachment of a material to the flat membrane, which is preferably designed as a square rod, is arranged between the flat membrane and the exciters and preferably has a higher speed than the material of the flat membrane in terms of sound propagation and as a coupling material is used between the actual flat membrane and the exciters. The coupling material acts as a sound collector, which collects the vibration impulse that is generated in parallel on several exciters in the same frequency range or in different frequency ranges, and in comparison to a flat-panel loudspeaker without use such a sound collector introduces more coherently into the surface membrane. The invention thus essentially consists in a sound busbar for coherent sound radiation of multiple arranged vibration exciters on acoustic surface radiators.

Durch Verwendung des erfindungsgemäßen Schallsammlers werden die Schwingungsinterferenzen zwischen den einzelnen Excitern, die sich gemäß der Ausgestaltung nach dem Stand der Technik ungünstig auf die Klangqualität des Flächenlautsprechers, insbesondere bei der Sprachwiedergabe auswirken, zu hohen Frequenzen hin verschoben, sodass das Übertragungsverhalten des Flächenlautsprechers im relevanten Bereich der Sprache von 300 Hz bis 5000 Hz verbessert ist.By using the sound collector according to the invention, the vibration interferences between the individual exciters, which according to the configuration according to the prior art have an unfavorable effect on the sound quality of the flat-panel loudspeaker, especially during speech reproduction, are shifted to high frequencies, so that the transmission behavior of the flat-panel loudspeaker in the relevant range the speech is improved from 300 Hz to 5000 Hz.

Es können auch mehrere Schallsammler auf einer Flächenmembran zum Einsatz kommen, die jeweils einzelne Excitergruppen zusammenfassen, die im selben Frequenzbereich oder in unterschiedlichen Frequenzbereichen arbeiten.It is also possible to use several sound collectors on a flat membrane, each of which combines individual exciter groups that work in the same frequency range or in different frequency ranges.

Erfindungsgemäß wird also ein Flächenlautsprecher mit einer Flächenmembran und wenigstens zwei auf die Flächenmembran wirkenden Excitern vorgeschlagen, wobei wenigstens ein als Schallsammler ausgebildeter Träger vorgesehen ist, der mit seiner einen Seite mit der Flächenmembran und mit seiner der Flächenmembran gegenüberliegenden Seite mit wenigstens zwei Excitern verbunden ist.According to the invention, a panel loudspeaker with a panel diaphragm and at least two exciters acting on the panel diaphragm is proposed, at least one carrier designed as a sound collector being provided, one side of which is connected to the panel diaphragm and the side opposite the panel diaphragm to at least two exciters.

Der Träger trägt die Exciter und ist im Wesentlichen quaderförmig, speziell als quaderförmiger Streifen ausgebildet. Die Dicke des Trägers ist bevorzugt geringer als die Dicke der Flächenmembran, wobei wenigstes ein Träger in Richtung der Längsachse der Flächenmembran auf dieser angeordnet ist. Speziell ist wenigstens ein Träger in der Längsachse der Flächenmembran angeordnet.The carrier carries the exciter and is essentially cuboid, specifically designed as a cuboid strip. The thickness of the support is preferably less than the thickness of the flat membrane, at least one support being arranged on the flat membrane in the direction of the longitudinal axis of the flat membrane. In particular, at least one carrier is arranged in the longitudinal axis of the flat membrane.

Ist ein weiterer Träger vorgesehen, bildet dieser mit dem ersten Träger einen Winkel. Speziell ist der weitere Träger, der sich im Wesentlichen quer zur Längsachse der Flächenmembran erstreckt, kürzer ausgebildet als der erste Träger.If a further carrier is provided, this forms an angle with the first carrier. In particular, the further carrier, which extends essentially transversely to the longitudinal axis of the flat membrane, is made shorter than the first carrier.

Bevorzugt weist der Träger eine höhere Schallausbreitungsgeschwindigkeit als die Flächenmembran auf. Mit anderen Worten ist das Material oder die Materialbeschaffenheit der Flächenmembran und des wenigstens einen Trägers derart unterschiedlich, dass die Schallgeschwindigkeit im Träger größer als in der Flächenmembran ist. Aufgrund dieser Eigenschaft wird der parallel an mehreren Excitern gleichzeitig im selben Frequenzbereich oder in unterschiedlichen Frequenzbereichen erzeugte Schallimpuls sehr kohärent in die Flächenmembran eingeleitet.The carrier preferably has a higher speed of sound propagation than the flat membrane. In other words, the material or the material properties of the flat membrane and the at least one carrier are so different that the Speed of sound in the carrier is greater than in the flat membrane. Due to this property, the sound pulse generated in parallel on several exciters at the same time in the same frequency range or in different frequency ranges is introduced very coherently into the flat membrane.

Der wenigstens eine Träger ist bevorzugt vollflächig mit der Flächenmembran verbunden. Hingegen ist bevorzugt vorgesehen, dass die wenigstens zwei Exciter nur abschnittsweise mit dem Träger verbunden sind und so beispielsweise über die Fläche des Trägers hinauskragen. Insbesondere sind die wenigstens zwei Exciter abschnittsweise mit wenigstens einem zweiten mit der Flächenmembran verbundenen Träger verbunden. Speziell sind die Träger und die Exciter so angeordnet, dass zwischen den parallel zueinander, voneinander beabstandet angeordneten Trägern ein von der Excitern überbrückter Spalt verbleibt.The at least one carrier is preferably connected to the flat membrane over the entire surface. In contrast, it is preferably provided that the at least two exciters are only connected to the carrier in sections and thus, for example, protrude beyond the surface of the carrier. In particular, the at least two exciters are connected in sections to at least one second carrier connected to the flat membrane. In particular, the carriers and the exciters are arranged in such a way that a gap bridged by the exciters remains between the carriers, which are arranged parallel to one another and spaced apart from one another.

Eine einfache und effiziente Ausgestaltung wird dadurch erreicht, dass der Träger ein Kohlefaser-Vierkantstab ist.A simple and efficient design is achieved in that the carrier is a carbon fiber square rod.

Der Träger ist bevorzugt linear ausgebildet. Nach einer alternativen Ausgestaltung ist der Träger bevorzugt in der Ebene parallel zur Flächenmembran wellenförmig ausgebildet.The carrier is preferably linear. According to an alternative embodiment, the carrier is preferably designed in the shape of a wave in the plane parallel to the flat membrane.

Ferner ist bevorzugt vorgesehen, dass eine Mehrzahl von mit der Flächenmembran verbundenen Trägern eine mit diesen verbundene, gemeinsam angesteuerte Gruppe von Excitern aufweist. Dabei ist der Abstand zwischen zu einer Gruppe zusammengefassten Excitern bevorzugt geringer als der Abstand zwischen zwei Excitern unterschiedlicher Gruppen.Furthermore, it is preferably provided that a plurality of carriers connected to the flat membrane have a jointly controlled group of exciters connected to them. The distance between exciters combined to form a group is preferably less than the distance between two exciters of different groups.

Schließlich ist alternativ vorgesehen, dass eine Mehrzahl von mit der Flächenmembran verbundenen Trägern jeweils eine mit diesen verbundene, einzeln angesteuerte Gruppe von Excitern aufweist.Finally, it is alternatively provided that a plurality of carriers connected to the flat membrane each have an individually controlled group of exciters connected to them.

Die Erfindung wird im Folgenden anhand von Zeichnungen erläutert. Es zeigen:

Fig. 1
eine perspektivische Ansicht der Rückseite eines ersten bevorzugten Ausführungsbeispiels eines Flächenlautsprechers nach der Erfindung;
Fig. 2
eine perspektivische Ansicht der Rückseite eines zweiten bevorzugten Ausführungsbeispiels eines Flächenlautsprechers nach der Erfindung;
Fig. 3
eine perspektivische Ansicht der Rückseite eines dritten bevorzugten Ausführungsbeispiels eines Flächenlautsprechers nach der Erfindung;
Fig. 4
eine perspektivische Ansicht der Rückseite eines vierten bevorzugten Ausführungsbeispiels eines Flächenlautsprechers nach der Erfindung; und
Fig. 5
eine perspektivische Ansicht der Rückseite eines fünften bevorzugten Ausführungsbeispiels eines Flächenlautsprechers nach der Erfindung.
The invention is explained below with reference to drawings. Show it:
Fig. 1
a perspective view of the rear of a first preferred embodiment of a flat panel loudspeaker according to the invention;
Fig. 2
a perspective view of the rear of a second preferred embodiment of a flat panel loudspeaker according to the invention;
Fig. 3
a perspective view of the rear of a third preferred embodiment of a flat panel loudspeaker according to the invention;
Fig. 4
a perspective view of the rear of a fourth preferred embodiment of a flat panel loudspeaker according to the invention; and
Fig. 5
a perspective view of the rear of a fifth preferred embodiment of a flat panel loudspeaker according to the invention.

Fig. 1 zeigt eine perspektivische Ansicht der Rückseite eines ersten bevorzugten Ausführungsbeispiels eines Flächenlautsprechers nach der Erfindung. Insbesondere zeigt Fig. 1 eine perspektivische Ansicht einer Flächenmembran 1 mit einem als Schallsammler ausgebildeten Träger 2 und zwei Excitern 4,5, bei dem ein einziger Schallsammler 2 zwischen der Flächenmembran 1 und einer Excitergruppe 4, 5 angeordnet ist. Der Träger 2 in der Längsachse der Flächenmembran 1 vollflächig mit dieser verbunden, wobei die Exciter 4, 5 auf dem Träger 2 gleichmäßig verteilt angeordnet und vollflächig mit diesem verbunden sind. Fig. 1 shows a perspective view of the rear of a first preferred embodiment of a flat panel loudspeaker according to the invention. In particular shows Fig. 1 a perspective view of a flat membrane 1 with a carrier 2 designed as a sound collector and two exciters 4, 5, in which a single sound collector 2 is arranged between the flat membrane 1 and an exciter group 4, 5. The carrier 2 in the longitudinal axis of the flat membrane 1 is connected to the latter over the entire area, the exciters 4, 5 being arranged evenly distributed on the carrier 2 and connected to the latter over the entire area.

Fig. 2 zeigt eine perspektivische Ansicht der Rückseite eines zweiten bevorzugten Ausführungsbeispiels eines Flächenlautsprechers nach der Erfindung. Insbesondere zeigt Fig. 2 eine perspektivische Ansicht einer Flächenmembran 1 mit den als Schallsammlern ausgebildeten Trägern 8, 9 und zwei mit den Trägern 8, 9 verbundenen Excitern 4, 5. Die Träger 8, 9 sind in Längsrichtung der Flächenmembran und parallel zueinander beabstandet angeordnet, wobei die Exciter 4, 5 abschnittsweise mit den Trägern 8, 9 verbunden und den zwischen den Trägern 8, 9 verbleibenden Spalt überbrückend, mittig zu diesen angeordnet sind. Fig. 2 shows a perspective view of the rear of a second preferred embodiment of a flat panel loudspeaker according to the invention. In particular shows Fig. 2 a perspective view of a flat membrane 1 with the supports 8, 9 designed as sound collectors and two exciters 4, 5 connected to the supports 8, 9. The supports 8, 9 are arranged in the longitudinal direction of the flat membrane and parallel to each other, the exciters 4, 5 connected in sections to the carriers 8, 9 and bridging the gap remaining between the carriers 8, 9 and arranged in the middle of these.

Fig. 3 zeigt eine perspektivische Ansicht der Rückseite eines dritten bevorzugten Ausführungsbeispiels eines Flächenlautsprechers nach der Erfindung. Insbesondere zeigt Fig. 3 eine perspektivische Ansicht einer Flächenmembran 1 mit den als Schallsammlern ausgebildeten Trägern 10, 11 und den vier Excitern 4, 5, 6, 7. Jeder Träger 10, 11 weist jeweils eine aus zwei Excitern 4, 5, 6, 7 gebildete Excitergruppe auf, die gemeinsam oder getrennt angesteuert sein können. Fig. 3 shows a perspective view of the rear of a third preferred embodiment of a flat panel loudspeaker according to the invention. In particular shows Fig. 3 a perspective view of a flat membrane 1 with the carriers 10, 11 designed as sound collectors and the four exciters 4, 5, 6, 7. Each carrier 10, 11 has each has one exciter group formed from two exciters 4, 5, 6, 7, which can be controlled jointly or separately.

Fig. 4 zeigt eine perspektivische Ansicht der Rückseite eines vierten bevorzugten Ausführungsbeispiels eines Flächenlautsprechers nach der Erfindung. Insbesondere zeigt Fig. 4 eine perspektivische Ansicht einer Flächenmembran 1 mit einem als Schallsammler ausgebildeten Träger 12 und zwei Excitern 4, 5, bei dem die Exciter 4, 5 nur abschnittsweise mit dem Träger 12 verbunden sind und frei schwebend über den Träger 12 hinausragen. Fig. 4 shows a perspective view of the rear of a fourth preferred embodiment of a flat panel loudspeaker according to the invention. In particular shows Fig. 4 a perspective view of a flat membrane 1 with a support 12 designed as a sound collector and two exciters 4, 5, in which the exciters 4, 5 are only partially connected to the support 12 and protrude freely above the support 12.

Schließlich zeigt Fig. 5 eine perspektivische Ansicht der Rückseite eines fünften bevorzugten Ausführungsbeispiels eines Flächenlautsprechers nach der Erfindung. Insbesondere zeigt Fig. 5 eine perspektivische Ansicht einer Flächenmembran 1 mit einem als Schallsammler ausgebildeten Träger 2 und vier Excitern 3, 4, 5, 6, die in funktionelle Gruppen zusammengefasst getrennt oder gemeinsam angesteuert sein können.Finally shows Fig. 5 a perspective view of the rear of a fifth preferred embodiment of a flat panel loudspeaker according to the invention. In particular shows Fig. 5 a perspective view of a flat membrane 1 with a carrier 2 designed as a sound collector and four exciters 3, 4, 5, 6, which can be combined in functional groups separately or controlled together.

Claims (10)

Flächenlautsprecher mit einer Flächenmembran (1) und wenigstens zwei auf die Flächenmembran (1) wirkenden Excitern (3, 4, 5, 6),
gekennzeichnet durch
wenigstens einen als Schallsammler ausgebildeten Träger (2, 8, 9, 10, 11, 12), der mit seiner einen Seite mit der Flächenmembran (1) und mit seiner der Flächenmembran (1) gegenüberliegenden Seite mit wenigstens zwei Excitern (3, 4, 5, 6) verbunden ist.Flat panel loudspeaker with a flat membrane (1) and at least two exciters (3, 4, 5, 6) acting on the flat membrane (1),
marked by
at least one carrier (2, 8, 9, 10, 11, 12) designed as a sound collector, one side of which with the flat membrane (1) and the side opposite the flat membrane (1) with at least two exciters (3, 4, 5, 6) is connected. Flächenlautsprecher nach Anspruch 1, dadurch gekennzeichnet, dass der Träger (2, 8, 9, 10, 11,12) eine höhere Schallausbreitungsgeschwindigkeit als die Flächenmembran (1) aufweist.Flat loudspeaker according to Claim 1, characterized in that the carrier (2, 8, 9, 10, 11, 12) has a higher speed of sound propagation than the flat membrane (1). Flächenlautsprecher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die wenigstens zwei Exciter (3, 4, 5, 6) nur abschnittsweise mit dem Träger (8, 9, 12) verbunden sind.Surface loudspeaker according to one of the preceding claims, characterized in that the at least two exciters (3, 4, 5, 6) are only partially connected to the carrier (8, 9, 12). Flächenlautsprecher nach Anspruch 3, dadurch gekennzeichnet, dass die wenigstens zwei Exciter (3, 4, 5, 6) abschnittsweise mit wenigstens einem zweiten Träger (8, 9) verbunden sind.Surface loudspeaker according to Claim 3, characterized in that the at least two exciters (3, 4, 5, 6) are connected in sections to at least one second carrier (8, 9). Flächenlautsprecher nach Anspruch 4, dadurch gekennzeichnet, dass die Träger (8, 9) parallel zueinander, voneinander beabstandet angeordnet sind.Surface loudspeaker according to Claim 4, characterized in that the supports (8, 9) are arranged parallel to one another, at a distance from one another. Flächenlautsprecher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Träger (2, 8, 9, 10, 11,12) ein Kohlefaser-Vierkantstab ist.Surface loudspeaker according to one of the preceding claims, characterized in that the carrier (2, 8, 9, 10, 11, 12) is a carbon fiber square rod. Flächenlautsprecher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Träger (2, 8, 9, 10, 11,12) linear ausgebildet ist.Surface loudspeaker according to one of the preceding claims, characterized in that the carrier (2, 8, 9, 10, 11, 12) is linear. Flächenlautsprecher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Träger (2, 8, 9, 10, 11, 12) in der Ebene parallel zur Flächenmembran (1) wellenförmig ausgebildet ist.Flat-panel loudspeaker according to one of the preceding claims, characterized in that the carrier (2, 8, 9, 10, 11, 12) is wave-shaped in the plane parallel to the flat-panel membrane (1). Flächenlautsprecher nach einem der vorhergehenden Ansprüche, gekennzeichnet durch eine Mehrzahl von mit der Flächenmembran verbundenen Trägern (2, 8, 9, 10, 11, 12) mit einer mit diesen verbundenen, gemeinsam angesteuerten Gruppe von Excitern (3, 4, 5, 6).Flat loudspeaker according to one of the preceding claims, characterized by a plurality of supports (2, 8, 9, 10, 11, 12) connected to the flat membrane with a jointly controlled group of exciters (3, 4, 5, 6) connected to them. . Flächenlautsprecher nach einem der Ansprüche 1 bis 7, gekennzeichnet durch eine Mehrzahl von mit der Flächenmembran verbundenen Trägern (2, 8, 9, 10, 11, 12) mit jeweils einer mit diesen verbundenen, einzeln angesteuerten Gruppe von Excitern (3, 4, 5, 6).Flat-panel loudspeaker according to one of Claims 1 to 7, characterized by a plurality of supports (2, 8, 9, 10, 11, 12) connected to the flat-panel membrane, each with an individually controlled group of exciters (3, 4, 5) connected to them , 6).
EP20212136.4A 2019-12-09 2020-12-07 Flat loudspeaker Active EP3836559B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202019004991.6U DE202019004991U1 (en) 2019-12-09 2019-12-09 Sound busbar for coherent sound radiation of multiple vibration exciters on acoustic radiators
DE102020125286.2A DE102020125286A1 (en) 2019-12-09 2020-09-28 Flat speakers

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EP3836559A1 true EP3836559A1 (en) 2021-06-16
EP3836559C0 EP3836559C0 (en) 2024-08-21
EP3836559B1 EP3836559B1 (en) 2024-08-21

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DE202024102122U1 (en) 2024-04-26 2024-06-18 Liliya Theis Flat panel loudspeakers with improved performance

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DE102005047300A1 (en) 2005-03-21 2006-10-05 Theis, Heinz Jürgen At least one drive, in particular with flat membrane loudspeaker membrane, and at least one plate-like element having device for installation in walls and ceilings and for the sound of rooms
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DE102005047300A1 (en) 2005-03-21 2006-10-05 Theis, Heinz Jürgen At least one drive, in particular with flat membrane loudspeaker membrane, and at least one plate-like element having device for installation in walls and ceilings and for the sound of rooms
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Publication number Priority date Publication date Assignee Title
DE202024102122U1 (en) 2024-04-26 2024-06-18 Liliya Theis Flat panel loudspeakers with improved performance

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