WO2007085502A1 - Dispositif d’éclairage de l’environnement - Google Patents

Dispositif d’éclairage de l’environnement Download PDF

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Publication number
WO2007085502A1
WO2007085502A1 PCT/EP2007/050005 EP2007050005W WO2007085502A1 WO 2007085502 A1 WO2007085502 A1 WO 2007085502A1 EP 2007050005 W EP2007050005 W EP 2007050005W WO 2007085502 A1 WO2007085502 A1 WO 2007085502A1
Authority
WO
WIPO (PCT)
Prior art keywords
lighting device
ambient lighting
processing unit
light
signal processing
Prior art date
Application number
PCT/EP2007/050005
Other languages
German (de)
English (en)
Inventor
Robert Bösnecker
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to EP07726187A priority Critical patent/EP1977627A1/fr
Publication of WO2007085502A1 publication Critical patent/WO2007085502A1/fr

Links

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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0004—Personal or domestic articles
    • F21V33/0052—Audio or video equipment, e.g. televisions, telephones, cameras or computers; Remote control devices therefor
    • F21V33/0056—Audio equipment, e.g. music instruments, radios or speakers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • 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
    • H04R2440/01—Acoustic transducers using travelling bending waves to generate or detect sound

Definitions

  • the invention relates to an ambient lighting device with a light source for rooms and outdoor areas or open spaces. Furthermore, the invention relates to an ambient lighting device with an attachment disk.
  • Lamps are in a lamp or illumination device used, light emitting devices with at least ⁇ a light source.
  • Lamps, various For ⁇ have men: tubular or rod-shaped, eg fabric tube with a luminous, pear, teardrop or spherical, for example, an incandescent lamp.
  • lighting equipment such as ceiling lights, wall lights, desk lamps, etc. They can be permanently installed or mobile. They can be operated with mains power or with batteries.
  • a light source preferably emits visible light. Illuminants have at least one light source.
  • the generation of radiation can ⁇ sources of light differ in their way.
  • the light at a light ⁇ is fluorescent by an excited gas, and of an incandescent lamp by a thermal radiator generated.
  • light sources are distinguished according to their intensity, temperature, excitation and their spatial extent.
  • a point light source is known, for example, as a spotlight or spot.
  • a fluorescent tube is preferably referred to as a diffuse light source.
  • Lighting is an optical exposure and illumination of a room, object and / or outdoor area to understand. Artificial indoor and / or outdoor lighting using lights is usually done with electric lighting. With such electrical lighting devices are for example, equipped buildings. Thetheseinrich ⁇ lines are preferably attached to the buildings or Jardinde ⁇ bridges. Even in public facilities such as train stations or airports, the rooms or outdoor areas are equipped with lighting facilities.
  • a voice coil operating according to the electrodynamic principle is used, which is mechanically coupled directly to a surface. If the voice coil is electrically excited by a signal generator, then their vibrations are transmitted to the surface acting as a membrane, whereby this itself forms a sound-emitting element.
  • EP-BO 847 663 and EP-BO 847 670 become known.
  • a flat panel speaker for sounding a passenger compartment in to use a vehicle.
  • a display screen is described consisting of a panel with a lichtre ⁇ inflecting or light emitting surface, in which the panel is used as the sound-emitting element of an area-chenlaut Maschineners.
  • a disadvantage of the prior art is that two systems must be instal ⁇ for sound and sufficient illumination, for example, a room instal ⁇ .
  • EP 1 122 974 A1 discloses a surface loudspeaker integrated in a lighting device.
  • the disadvantage of this is that in the lighting device, which is a first functional system, an acoustic second au ⁇ tark working functional system must be integrated.
  • Object of the present invention is to provide an ambient lighting device of the type mentioned, which allows the functionality of a Be ⁇ sound system with less effort.
  • this object is characterized according to the invention solves ge ⁇ that the light source is directed as a sound-emitting element ⁇ forth.
  • two fundamentally different supply systems for, for example, buildings, namely the optical and the acoustic supply, are provided here by means of a common device for light and sound. This saves installation space, material and costs.
  • a light source or a cluster of light sources can carry the same time for active sound output at ⁇ or used.
  • the illuminant is associated with at least one electro-mechanical transducer, the him as electrical input signals supplied audio signals in mechanical
  • the at least one transducer is connected upstream of an electronic ⁇ -specific signal processing unit, by means of which non-linearities are compensated in the acoustic transfer characteristic of the luminous means or by means of which a desired acoustic transfer characteristic of the lighting device is adjustable.
  • the frequency response of a luminous means used here as a "surface speaker” is determined by the mechanical properties of the luminous means, which is used as a sound-emitting element, and by a number and a position of the converter applied thereto. This frequency response typically has Brockli ⁇ nearticianen, which led to a sound distortion in the sound radiation in certain frequency ranges.
  • the audio signals are processing unit in the electronic signal frequency dependent ⁇ filtered collinear total an acoustic system with an Ii to provide a perceptually favorable and / or a predefined transmission characteristic.
  • the electromechanical transducer and the electronic signal processing unit is preferably an amplifier connected between ⁇ .
  • the transmitted audio signals are adjusted in the upstream amplifier to a signal strength corresponding to the required volume before they are fed to the at least one electromechanical converter.
  • the electronic signal processing unit to a digital Sig ⁇ nalreaor, which is formed for storing a correction function of the lighting means and for pre-processing the audio signals supplied to it according to the correction function.
  • a digital signal processor for the electronic pre-processing of the audio signals allows the storage of a previously determined transfer function of the system of sound-emitting element and electromechanical converters applied thereto.
  • the specific acoustic transfer function of this configuration can be determined for each configuration.
  • This Sprint ⁇ cleaning function is preferably stored in the memory of the digital signal processor wherein the signal processor is programmed to input audio signals are filtered in accordance with egg grains for stored transfer function inverse pronounced correction function it, whereby, for example, non-linearities are compensated in the transfer function.
  • a designer of such ambient lighting devices according to the invention has a multiplicity of combinations of lighting means which can be used as sound-emitting elements and wall- mounted sensors. Such a combination of bulbs, transducers and the necessary structural facilities meet the required tonal requirements today.
  • the electronic signal processing unit has an analog filter device. Since pure digital signal processing units can be costly, can with the construction of a control unit from case to case, the corrective ⁇ turfunktion with an analog operational amplifier, instead of or in addition to the digital signal processor can be realized.
  • the signal processing unit has a passive FiI- on.
  • a passive filter device consists for example of LCR filters and is among other things immune to EMC influences.
  • a wireless transmission path is provided for signal transmission between the electronic signal processing unit and the amplifier upstream of the converter.
  • This wireless Ü bertragungsumble is can not be arranged in un ⁇ indirect proximity to the lamps of very particular advantage when playing for reasons of space in or on the processing device matterssbeleuch- ⁇ at the signal processing unit. If a connection by means of audio cables can not be established without further or only after constructively complicated measures, then the preprocessed audio signals can preferably be transmitted through the wireless transmission link.
  • the wireless transmission link is designed as an infrared link.
  • the wireless transmission link is designed as a radio link.
  • the luminous means has a single light source, in particular ⁇ sondere a large-area, one-piece and / or homogeneous light source.
  • An illuminant with a single light source is typically acterized by a large surface charak ⁇ , which advantageously a sound output accommodates ⁇ .
  • a light source with only a single light source is, for example, a neon tube.
  • the luminous means comprises a plurality of light elements, preferably a plurality of segments which are combined in a segment-like manner into a matrix.
  • Several, for example, parallel neon tubes or neon bars glued to a structural unit correspond to a light source with several light sources.
  • the luminous means has a carrier device with at least one light source, preferably a light-emitting diode, wherein the light source (s) and the carrier device form a vibratory structural unit.
  • the light source (s) and the carrier device form a vibratory structural unit.
  • the luminous means has organic light-emitting diodes.
  • Called OLED consists of a stack of thin organic layers sandwiched between a transparent anode and a metallic cathode.
  • OLEDs can both designed as a sound radiating element support ⁇ layer applied, as well as a flexible, flexurally rigid element, which can be excited sound emission be used.
  • the luminous means is pronounced surface, preferably a radiation-active surface in the loading range from 10 cm times 10 cm to 5 m times 5 m, ⁇ rule particular Zvi 30 cm by 30 cm and 1 m by 1 m.
  • the ambient lighting device for rooms and outdoor areas preferably has an attachment disk, which lies in the beam path of the light and is prepared as a sound-emitting element.
  • an ambient lighting device according to the invention has an attachment disk, which is preferably arranged directly in front of the lighting means.
  • the attachment disc is assigned at least one electromechanical transducer which converts audio signals supplied to it as electrical input signals into mechanical oscillations which can be converted to acoustically effective vibrations by means of the attachment disc.
  • the ambient lighting device according to the invention can be used as a public address system for a room or an outdoor area.
  • the ambient lighting device can be used in a dual role as an illumination device and a public address system ver ⁇ be spent. It is for the operation of such Kombina ⁇ tion system not necessary to operate both functions simultaneously.
  • the ambient lighting device can also be used as a public address system if the ambient lighting device does not emit light for illuminating.
  • FIG. 2 a surface illuminant with a converter
  • FIG. 3 a segmented surface illuminant with a converter
  • FIG 4 shows a LED surface lighting means comprising a transducer
  • FIG 5 is a block diagram illustrating the Signalverarbei ⁇ processing for audio signals, output from a sound generator and an envi- transducers according to the invention are supplied to the illumination unit,
  • FIG. 6 shows a ceiling light prepared ambient lighting device with an attachment disc
  • FIG 7 tung a signal processing unit with a Filtereinrich ⁇ .
  • an ambient lighting device 1 which is prepared as a ceiling light and according to the invention illuminates the underlying space and at the same time supplied with sound.
  • An approximately 70 cm wide and 120 cm long Flä ⁇ Chig pronounced light source 2 is the left side of a first bulb holder 2a and the right side held by a second bulb holder 2b.
  • the light-emitting means 2 is shown in a side view.
  • the light source 2 works on the principle of a neon tube, except that in this example, virtually a "neon plate" is present.
  • the bulb 2 is supplied simultaneously with an electrical supply voltage.
  • the lighting means 2 is prepared as a sound-emitting element. Since the sound-emitting element, so the light-emitting means 2, is designed flat and rigid, it is to transversal Bie ⁇ vibrations and thus stimulated to the sound radiation.
  • the inside of a housing (not shown) of the ambient lighting device 1 and / or the "back" or upper Side - the side facing the ceiling - the bulb can be designed to achieve a better light output reflective or reflective.
  • the electroacoustic transformer 3 can be located on the light source 2, as shown in FIG 1, or on the backside mirroring.
  • two electromechanical transducers 8 are arranged, which are a permanent magnet system and a
  • the elec- romechanischen converter 8 are driven in a parallel circuit of individual signal lines by a signal processing unit 12 so that the converter 8 of the Au ⁇ audio link a signal source 11, which communicates with the signal processing unit 12 in connection, mechanically vibrate.
  • a thermosetting adhesive By fixing, by means of a thermosetting adhesive, the transducer 8 on the lamp 2, this is excited to bending vibrations. Join the bulb 2 when
  • the bulb Performing transverse bending vibrations in resonance, the bulb produces 2 tones and sounds.
  • a linear or psychoacoustic Cheap ⁇ transmission characteristic - of transducers 8 and light source 2 to reach the audio signals of the signal source 11 are first supplied to the signal processing unit 12, the structure of which and function will be explained in more detail with reference to FIG 5.
  • the ambient lighting device 1 which functions as a space illuminating device in a dual function and as a surface speaker
  • a number of parameters are critical. Of these the most part structurally-related parameters, it is dependent on how individual frequencies of the transversa ⁇ len bending waves propagate in the bulbs. Play it not only its shape and dimensions, but also its mass and rigidity play a role. It also depends on how it is clamped. Especially in the present case, in which the lighting means is a component of a lamp, this can not be formed solely in terms of its acoustic properties.
  • a surface illuminant 5 is shown in a perspective view.
  • the surface illuminant 5 has a single light source 4.
  • the surface illuminant 5 is prepared according to the principle of a fluorescent lamp.
  • Light ⁇ flashlight illuminants are similar to the bulbs of a neon tube lamp constructed.
  • the desired white light consists of a mixture of innumerable light colors, while a gas discharge lamp or the associated light ⁇ emitting a line spectrum with a limited number of wavelengths (often only a single).
  • It is an evacuated flat glass space used, which contains small amounts of mercury.
  • Mercury emits light when, as is known to those skilled in the art, it uses electrons
  • the surface illuminant 5 forms a constructional unit with the transformer 8, it can be used according to the invention for illuminating rooms and outdoor areas. chen be used and additionally operated as a ceremoniesnlautspre ⁇ cher.
  • a segmented surface illuminant 6 is shown in FIG. 3 as the third exemplary embodiment.
  • the segmented consortiumnleuchtmit ⁇ tel 6 consists of eleven parallel permanently interconnected ⁇ bulbs bulbs 6a in rod form.
  • a light-emitting segment 6a in each case represents a light source 4.
  • the eleven light-emitting element segments 6a are joined together to form the planar light- emitting means 6.
  • This construction also has a high bending stiffness so that the transformer 8 mechanical vibrations on the segmented surface of the bulb 6 transmits over ⁇ .
  • the individual lamp segments 6 need not be designed rectangular. However, they must be so be ⁇ create that they can forward vibration in itself. In addition, the connection with each other must be worked so that vibrations can be transmitted from one to the next lamp segment.
  • the operation of a light-emitting segment 6a is similar to that of a neon tube or fluorescent tube.
  • FIG 4 is also shown in perspective with a fourth embodiment, a planar illuminant.
  • the areal lighting means is formed here by an LED legislativenleucht- medium 7 realized with a plurality of individual light sources 4, wherein a single light source 4 is formed by a single ⁇ ne, preferably white, LED.
  • This plurality of LEDs is attached to a carrier device 7a, which acts as an acoustically effective sound-emitting element. It is also a construction conceivable in which, similar to FIG 3 matriform arranged and / or rod-like segments come to use ⁇ set.
  • the plurality of LEDs can thus be combined without an additional carrier device 7a, so that they likewise form a sound-emitting element again.
  • the transformer 8 of the LED surface illuminant 7 is glued to the upper ⁇ side of the support device 8.
  • the individual LEDs 4 are arranged so that the light exits from the back and the bottom of the support device 7a.
  • the already described signal processing unit 12 can be constructed in various ways. Depending on the application, it may be beneficial to the signal processing unit 12 len from Spu ⁇ build capacitors, resistors or similar components with the same functionality. Also is an active Sig ⁇ nal kauakusaku with a power supply device imaginable. A so-called active signal processing unit is constructed, for example, from analog filters or digital filters. Hereinafter, a digital signal processing unit 12 will be described.
  • the signal processing unit 12 gegebe ⁇ appropriate also comprise a plurality of digital signal processors 15 which then operate in parallel, if very high Anfor ⁇ requirements are imposed on the transmission quality of the audio signals for egg NEN downstream area lights speaker 20th
  • the electronic signal processing unit 12 is applied.
  • the audio signals of a signal source 11 are supplied, for example, a tone ⁇ strip or cassette player of the signal processing unit 12th
  • the signal source 11 can but also a CD or DVD player to be, wherein the entspre ⁇ sponding components of the signal conversion from analog to digital and vice versa can be omitted.
  • the components which are combined in a housing, not shown, of the signal processing unit 12 represent, in particular, an electronic filter whose transfer function is formed inversely to the frequency response of the transmission characteristic of the luminous means 2 or the areal loudspeaker 20.
  • Inverse formed here means that at locations at or loading range in the frequency response or in which a signal strength of a limit value makes falls below or exceeds the Cor ⁇ correction function adaptation. It is doing a good approximation of a desired frequency response for the aim is the entire system. Desirable is beispielswei ⁇ se a linear transmission behavior for hi-fi applications or for background music, an additional loudness correction may be required. For voice transmission, a "center boost" may be desired.
  • the signal processing unit 12 has as an input ⁇ circuit a sample memory unit 13, which is often referred to as a "sample and hold" circuit.
  • a sample memory unit 13 which is often referred to as a "sample and hold" circuit.
  • Audio ⁇ signal is sampled by a predetermined sampling theorem.
  • the respective sampled instantaneous value is buffered and fed to an analog-to-digital converter 14.
  • the digital signals are supplied to the digital signal processor 15, is performed in the mathematically required for correction of the frequency response Sig ⁇ nalformung.
  • a digital-to-analog converter 16 is connected, with which the binary output signal of the digital signal processor 15 is again converted into an analog signal.
  • This analog signal is fed in parallel via an amplifier 17 to the electromagnetic transducers 8 via signal lines.
  • a radio link or an infrared connection as a wireless connection 22 between the signal processing unit 12 and the areal loudspeaker 20.
  • the housing of the signal processing unit 12 can not be arranged in the immediate vicinity of the areal loudspeaker, ie in particular the luminous means 2 and the transducers 8 mounted thereon, for structural reasons.
  • a Wi-Fi is possible.
  • 6 shows similar to FIG 1 in a schematic depicting ⁇ lung as the sixth embodiment, a processing device matterssbeleuch- Ia which is prepared as a ceiling light according to the invention and the space below it off lights up and simultaneously supplied with sound.
  • an additional attachment disk 24 is additionally manufactured as a sound-emitting element. Since the sound-emitting element, so the attachment ⁇ disc 24, is designed flat and rigid, it is excitable to transverse bending vibrations and thus to the sound radiation. Analogous to the arrangement of the transducers 8 from FIG. 1, the transducers 8 are arranged on the attachment plate 24 of the ambient illumination device 1a.
  • FIG 7 shows an alternative embodiment to that already shown in FIG 5 signal processing unit 12.
  • the signal processing unit 12 shown in FIG 5 has, instead of a digital signal processor and its associated A / D-wall ⁇ learning an analog filter device 100 or a passive filter device 101.
  • the analog filter device 100 is realized by means of an operational amplifier.
  • the passive filter device is realized by means of an LRC combination.
  • control lines are additionally provided in addition to the mains voltage supply. These control lines are needed for a compensation of the lighting arrangement according to predetermined parameters. In the majority of applications, these electrical lines are hidden from view, in larger lighting systems, for example, cable ducts and the like are provided for the wiring. Thus, the power supply is already directly available, and also means are available for correspondingly supplying the signal processing unit or the amplifier with the necessary audio signals. By using the control lines as audio signal lines in lighting systems, the audio signal lines are saved to the preferably used amplifiers.
  • the exemplary embodiments have in common that the light-generating illuminant oscillates acoustically active.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

L'invention concerne un dispositif (1) d'éclairage de l'environnement comprenant un moyen d'éclairage (2). Dans le bâtiment ou à l'extérieur, il faut souvent acheminer de la lumière et du son aux espaces ou aux surfaces libres. Avec un dispositif (1) d'éclairage de l'environnement comprenant un moyen d'éclairage (2) qui est réalisé sous la forme d'un élément émetteur de son, du son est produit en plus de la lumière par le moyen d'éclairage (2) au moyen d'un convertisseur électromagnétique (8).
PCT/EP2007/050005 2006-01-26 2007-01-02 Dispositif d’éclairage de l’environnement WO2007085502A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07726187A EP1977627A1 (fr) 2006-01-26 2007-01-02 Dispositif d'éclairage de l'environnement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006003830.4 2006-01-26
DE102006003830A DE102006003830B4 (de) 2006-01-26 2006-01-26 Umgebungsbeleuchtungseinrichtung

Publications (1)

Publication Number Publication Date
WO2007085502A1 true WO2007085502A1 (fr) 2007-08-02

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ID=38265791

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/050005 WO2007085502A1 (fr) 2006-01-26 2007-01-02 Dispositif d’éclairage de l’environnement

Country Status (3)

Country Link
EP (1) EP1977627A1 (fr)
DE (1) DE102006003830B4 (fr)
WO (1) WO2007085502A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007059724A1 (de) * 2007-12-12 2009-06-18 Siemens Ag Vorrichtung zur Wiedergabe von Schall bei hohen Temperaturen
DE102008012856A1 (de) * 2008-03-06 2009-09-17 Siemens Aktiengesellschaft Akustische Anregereinheit
DE102008013612A1 (de) * 2008-03-11 2009-10-08 Siemens Aktiengesellschaft Akustische Vorrichtung
DE102009048866A1 (de) 2009-08-27 2011-03-03 Bösnecker, Robert, Dr. Akustisches Antriebselement mit Mittenloch
IT202100007076A1 (it) * 2021-03-24 2022-09-24 Michele COLLU Sistema di diffusione audio basato su tecnologia dml

Citations (2)

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Publication number Priority date Publication date Assignee Title
WO1997009853A2 (fr) * 1995-09-02 1997-03-13 New Transducers Limited Of Stonehill Ecrans de presentation comprenant des haut-parleurs
WO2006003166A1 (fr) * 2004-07-02 2006-01-12 Siemens Aktiengesellschaft Dispositif audiovisuel

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DE50014004D1 (de) * 2000-02-02 2007-03-15 Siemens Ag Beleuchtungsanordnung mit einem integrierten Flächenlautsprecher
DE10018839A1 (de) * 2000-04-14 2001-10-25 Manfred Kluth Beleuchtungseinrichtung
US6791519B2 (en) * 2001-04-04 2004-09-14 Koninklijke Philips Electronics N.V. Sound and vision system
JP2007519292A (ja) * 2003-07-16 2007-07-12 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ パネル状音波生成器
CN101248701A (zh) * 2005-08-22 2008-08-20 皇家飞利浦电子股份有限公司 声光发射器件

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
WO1997009853A2 (fr) * 1995-09-02 1997-03-13 New Transducers Limited Of Stonehill Ecrans de presentation comprenant des haut-parleurs
WO2006003166A1 (fr) * 2004-07-02 2006-01-12 Siemens Aktiengesellschaft Dispositif audiovisuel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP1977627A1 *

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Publication number Publication date
EP1977627A1 (fr) 2008-10-08
DE102006003830B4 (de) 2013-07-25
DE102006003830A1 (de) 2007-08-16

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