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EP4198387A1 - Appareil pour le traitement de paramètres environnementaux - Google Patents

Appareil pour le traitement de paramètres environnementaux Download PDF

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Publication number
EP4198387A1
EP4198387A1 EP22210165.1A EP22210165A EP4198387A1 EP 4198387 A1 EP4198387 A1 EP 4198387A1 EP 22210165 A EP22210165 A EP 22210165A EP 4198387 A1 EP4198387 A1 EP 4198387A1
Authority
EP
European Patent Office
Prior art keywords
panel
environment
acoustic
holes
breadth
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
EP22210165.1A
Other languages
German (de)
English (en)
Inventor
Claudio Lamberini
Dario PAINI
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
Application filed by Individual filed Critical Individual
Publication of EP4198387A1 publication Critical patent/EP4198387A1/fr
Pending legal-status Critical Current

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Classifications

    • 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
    • F21S8/03—Lighting devices intended for fixed installation of surface-mounted type
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • F21Y2105/14—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array
    • F21Y2105/16—Planar light sources comprising a two-dimensional array of point-like light-generating elements characterised by the overall shape of the two-dimensional array square or rectangular, e.g. for light panels
    • 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]

Definitions

  • the present invention relates to an apparatus for the treatment of environmental parameters.
  • Acoustic conditioning of an environment allows to change significantly the feelings experienced by the people who are in it: specific acoustic conditions may be suitable for conventions and professional meetings, others may be better suited to leisure or entertainment environments.
  • a same environment can therefore be reconfigured by means of sound-conditioning apparatuses of the known type depending on the activity that is expected to be performed, optimizing its acoustic output for it.
  • the aim of the present invention is to solve the problems described above, providing an apparatus for the treatment of environmental parameters suitable to be completely integrated in the architectural elements of the environment.
  • an object of the invention is to provide an apparatus for the treatment of environmental parameters that is suitable for the acoustic conditioning of the environment.
  • Another object of the invention is to provide an apparatus for the treatment of environmental parameters that is suitable for the lighting the environment.
  • Another object of the invention is to provide an apparatus for the treatment of environmental parameters that is suitable for changing the environmental parameters also in an active manner.
  • Another object of the invention is to provide an apparatus for the treatment of environmental parameters that is suitable to allow subsequent reconfigurations of the environment.
  • a further object of the present invention is to provide an apparatus for the treatment of environmental parameters that has low costs, is relatively easy to provide in practice and is of assured application.
  • an apparatus for the treatment of environmental parameters characterized in that it comprises:
  • an apparatus for the treatment of environmental parameters is generally designated by the reference numeral 1.
  • the treatment of only the acoustic parameters of an environment involves an analysis of the volume and shape of the environment, the identification of its intended use, the finding of information related to the current situation (checking, for example, whether the environment is already furnished and in operation), the acquisition of acoustic information on the environment (for example, by acquiring the reverberation time, STI). This information will affect the project along with other intervention parameters (such as the planned budget for it and its time requirements).
  • the apparatus 1 allows the two fields of intervention to be combined, simultaneously performing both functions.
  • the apparatus 1 comprises a box-like body 2 designed to be placed in an environment: in particular, the apparatus may be of a freestanding type (i.e., suitable for forming a wall or partition) or may be associated with a surface S of an environment.
  • the apparatus may be of a freestanding type (i.e., suitable for forming a wall or partition) or may be associated with a surface S of an environment.
  • the surface S might be a wall or the ceiling, although the possibility of fixing the apparatus 1 to furniture components, doors or other dividing elements designed to partition the environments and, in general, to any surface present within the environment to be worked on is not excluded.
  • the apparatus 1 also comprises at least one associated panel 3 which is rigidly coupled to the box-like body and is substantially parallel to the fixing surface S.
  • the panel 3 is conveniently provided with a plurality of holes 4 of predefined breadth, which are distributed according to a predefined pattern.
  • the joining of the panel 3 (and/or frames 5 and 6) to the box-like body 2 can be provided in a rigid, elastic manner or with the interposition of dampers (for example, layers of polymeric foams and the like).
  • any frames 5, 6 and the panel 3 constitutes a Helmholtz resonator; it is, in other words, a particular acoustic resonant cavity conceived by Hermann von Helmholtz in 1860 for the study of sound and its perception.
  • a Helmholtz resonator By oscillating the air contained in a resonator, stationary waves are generated inside it in resonance with the natural frequency of the cavity, which therefore behaves as a selective amplifier of sound in a narrow range of frequencies.
  • the dimensions and shape of the box-like body 2, of the frames 5, 6, of the panel 3 and the breadth and number of holes 4 are not fixed but are chosen as a function of each specific application: these dimensional geometrical parameters vary according to the dimensions and shape of the environment (as well as the allowable space occupations for the apparatus 1) and the resonance frequency at which one wishes the resonator to operate.
  • a membrane 7 may be installed along the front edge of the box-like body 2 and may be affected by a plurality of distributed through receptacles and/or compact (having no perforations of any kind).
  • the membrane 7 may be made of fabric, mesh in sheet form or materials with equivalent characteristics.
  • the apparatus 1 advantageously comprises at least one lighting assembly 8 which can face or be integrated with respect to the panel 3 and substantially parallel thereto.
  • the lighting assembly is oriented to emit the light beam toward the environment, i.e., with the respective light sources arranged opposite the fixing surface S.
  • the apparatus 1 can also conveniently comprise means for adjusting the breadth of the holes 4: by virtue of the adjustment of said breadth, it will be possible to adjust the acoustic frequency ranges attenuated by the apparatus 1 by modifying the resonance frequency (as described previously in relation to the Helmholtz resonator).
  • the means for adjusting the breadth of the holes 4 are to be considered optional components of the apparatus 1, which is fully operational even in simpler versions in which the possibility to adjust the breadth of the holes 4 is not provided.
  • the means for adjusting the breadth of the holes 4 may advantageously comprise a plate 9 provided with a predefined number of openings that have dimensions and a distribution that correspond to those of the holes 4 present on the panel 3.
  • the plate 9 is movable along a face of the panel 3, modifying, according to its position, the breadth of the passages constituted by each hole 4 partially covered by the plate 9 and therefore allowing an easy adjustment of the resonance frequency (which corresponds to the frequency for which the apparatus 1 will provide the best acoustic attenuation).
  • the movement of the plate 9 on the panel 3 may be manual (an operator may "calibrate” the apparatus 1 from the outside by moving the plate 9), or automatic, by virtue of respective actuators.
  • the at least one lighting assembly 8 may conveniently comprise a plurality of side-by-side LEDs 11 distributed along respective linear portions.
  • the at least one lighting assembly 8 with LEDs 11 may favorably comprise a plurality of LEDs 11 which are distributed according to a matrix 12 which comprises a plurality of mutually intersecting linear portions.
  • each lighting assembly 8 of the type just described is affected by a plurality of through windows 13 defined between bands 14 for supporting the linear portions along which the LEDs 11 are arranged.
  • this embodiment is particularly interesting, since it allows to minimize the components, allowing therefore also a reduction in the overall thickness of the apparatus 1, which is a particularly interesting solution for some specific applications.
  • the lighting assemblies 8 may preferably be at least two (the accompanying figures show, by way of non-limiting example, an embodiment that uses four separate lighting assemblies 8), which will mutually be arranged side by side and substantially parallel.
  • the apparatus 1 may usefully comprise at least one control and management unit (not shown in the accompanying figures), functionally associated with at least one sensor (not shown in the accompanying figures), which is chosen between acoustic sensors and optical sensors.
  • control and management unit not shown in the accompanying figures
  • sensor not shown in the accompanying figures
  • the control and management unit may be validly connected to respective means for the adjustment and control of the light beam emitted by the lighting assembly 8, so as to control (and adjust) in feedback the parameters of the emitted light beam as a function of the signals detected by the at least one sensor.
  • the apparatus 1 may be commanded to send safety information to the people present (for example, in order to identify escape routes or to broadcast pre-recorded acoustic messages).
  • the apparatus 1 may also comprise at least one element for the actuation of the means for adjusting the breadth of the holes 4: said at least one actuation element is controlled by the at least one control and management unit for feedback control of the breadth of holes 4 as a function of the signals detected by the at least one sensor.
  • control and management unit may command the actuator to adjust the breadth of the holes 4, setting the resonance frequency precisely to the frequency of said unwanted signals, so as to dissipate them, avoiding their reverberation and reflection.
  • the apparatus 1 can be active and advantageously comprises at least one acoustic generator (not shown in the accompanying figures) of the type suitable, optionally in combination with other components, to emit sound waves and associated with a respective control computer.
  • at least one acoustic generator (not shown in the accompanying figures) of the type suitable, optionally in combination with other components, to emit sound waves and associated with a respective control computer.
  • the alternative embodiment proposed in the accompanying figures by way of non-limiting example provides that the at least one lighting assembly 8 is advantageously arranged proximate to the fixing surface S, the at least one panel 3 is advantageously adjacent to the face that is directed toward the outside environment of the at least one lighting assembly 8, the means for adjusting the breadth of the holes 4 (in particular the plate 9 provided with the openings 10) are positively contiguous to at least one of the faces of the panel 3.
  • the set of multiple apparatuses can give the surface S the role of a variable passive acoustic treatment system.
  • any presence of at least one acoustic generator in the apparatuses 1 installed on a surface S will give said surface the role of a variable active acoustic treatment system.
  • the apparatus 1 may comprise only the panel 3 and the at least one assembly 8 within the box-like body 2: the resonance frequency of the apparatus is not adjustable and depends (in addition to the dimensions of the box-like body 2) on the number, breadth and distribution of the holes 4 on the panel 3.
  • each apparatus 1 performs an attenuation of the noise (unwanted acoustic waves) having a frequency close to the resonance frequency (or falling within a fixed predefined frequency range).
  • each apparatus 1 performs at all times an attenuation of noise (unwanted acoustic waves) having a frequency close to the resonance frequency (or falling within a fixed predefined frequency range), but said frequency may be adjusted by modifying the breadth of the holes 4.
  • the movements of the plate 9 cause, as its position in space (along the X, Y, and Z coordinates) varies, a variation in the performance of the resonator in terms of absorption at the various frequencies. It is therefore noted that the plate 9 may, in particular embodiments, move also in a direction of approach/spacing with respect to the panel 3, thus affecting the frequencies of the acoustic signals that are absorbed by the apparatus 1.
  • the required breadth of the displacement of the plate 9 can be defined empirically, or by following preset position indications according to the desired type of absorption (for example, 100 Hz - 200 Hz - 500 Hz or other frequencies), or also, more simply, in relation to the intended use of the environment at a given time (for example, full auditorium - medium capacity auditorium - half-empty auditorium).
  • the apparatuses 1 can be installed on the surface S in a regular manner with a space that is predefined by them (a gap) and can vary depending on the design.
  • This predefined space is an element that, in similar arrangements, affects the acoustic response of the surface S and is an element that can be controlled at the design stage in terms of final acoustic performance.
  • the apparatuses 1 may also be arranged differently in the spaces: in a column, distributed unevenly, or even according to specific geometric configurations (even substantially imaginary ones), always taking care that the set of apparatuses 1 produces the desired effect from an acoustic point of view.
  • the apparatuses 1 may also have any shape, as well as any dimensions, depending on the specific installation requirements.
  • apparatuses 1 of the active type it is a matter of adding the acoustic generator so that the apparatus can react "actively” (and automatically) to external information, adapting its performance status to the specific requirement.
  • Control of the acoustic functions of the set of apparatuses 1 can be assigned to dedicated software capable of managing a stream of preset data toward said set, while processing data that arrive both from each of the installed apparatuses 1 and from the host environment (the software acts on the control and management unit and/or on an external computer associated with it).
  • the geometric changes of the apparatuses 1 in terms of changes in the breadth of the holes 4 or in terms of the acoustic waves produced by the acoustic generator
  • the first "active" function of the set of apparatuses 1 is therefore expressed as the adaptability to different acoustic scenarios determined by the intended use of the environment or by the momentary state thereof (for example, presenting a different response upon a full or half-full auditorium).
  • the second "active" function which is added to the previous one, consists in using the panel 3 (and possibly also the plate 9) of the individual apparatuses 1 to emit sound upon commands of the acoustic generator.
  • the acoustic generator merely induces vibrations of the panel 3 and/or plate 9 which determine the generation of acoustic waves that can be propagated in the environment (in practice, the panel 3 and/or the plate 9 act as speakers, which are driven by using operating software).
  • the set of apparatuses 1, thus conceived, in this case has an active acoustic configuration.
  • the use of artificial intelligence in conjunction with the ability to emit sound shifts the set from the family of PASSIVE configurations to the ACTIVE one.
  • a system of apparatuses 1 in active acoustic configuration does not necessarily have to provide the variability function of the system in acoustic terms.
  • the variability of the acoustic performance (rarely required, also because it is extremely expensive) is an available option, which allows accurate tuning of the environments, even in real time, but is not a necessary condition to define an active configuration system. It is therefore specified that the apparatuses 1 in the active acoustic configuration may also not include the means for adjusting the breadth of the holes 4.
  • the set of apparatuses 1 according to the invention also allows to provide that the lighting is an integrated element and not a "foreign object" to each apparatus 1; the acoustic phenomenon and the light phenomenon in each apparatus 1 mutually interact, generating innovative semiotic and functional connotations.
  • the apparatus 1 comprises the at least one lighting assembly 8 which can be applied on the matrix 12 and proximate to the panel 3.
  • the apparatus 1 can be provided with the additional membrane 7, which can be customized with acoustically compatible fabrics, so as to conceal the internal geometric shapes of the apparatus 1 and meet aesthetic design requirements.
  • the lighting assemblies 8 can be controlled by the above-mentioned control computer, thus fulfilling their task of furnishing and lighting.
  • the architect can decide whether to use all the information about the apparatus 1 according to the invention (and the related instruments), and proceed with the design of the environment including the acoustic part (vertical approach). This is one of the manners. Another hypothesis is that the architect uses only part of the information of the system (for example, finishes, modularity, dimensions, spatial layout, light control), confident that the design of the acoustic treatment will not subsequently entail any changes to his own design (superficial approach).
  • the architect can simply use the apparatus 1 according to the invention as a furnishing element without worrying about obtaining a good acoustic climate of the environment.
  • the architect can be assisted by a competent technician who performs the required measurements to obtain the data that allow a check of the actual quantity (and specific acoustic characteristics) of apparatuses 1 required.
  • the number of apparatuses 1 to be arranged in the environment and their geometric shape are the only information useful to the architect in order to be able to proceed with executive design.
  • the conditions of intervention may require the use of apparatuses 1 in a specific configuration (passive static or passive variable or even active).
  • the set of apparatuses 1 no longer represents only a "passive" acoustic treatment element, but can interact with the host environment and determine actions and reactions (imagine, for example, that the apparatuses 1 perform the task of broadcasting ambient music or generate sounds with the function of "masking" noise).
  • the apparatuses 1 can produce/control the sound: this production can be the result of a simple data transmission to the system (for example, background music), or it can be derived from a real-time acoustic climate analysis with consequent processing and response (for example, masking).
  • this production can be the result of a simple data transmission to the system (for example, background music), or it can be derived from a real-time acoustic climate analysis with consequent processing and response (for example, masking).
  • the apparatus 1 turns into a complex instrument for acoustic control and communication, since this component can be correlated with the acoustic phenomenon.
  • the set of apparatuses 1 it is possible to "level" the background noise with music or with a gentle musical background.
  • the volume of the musical background may follow a wave-like pattern similar to the diagram of the Lombard effect, but it can do so in such a manner as to anticipate the natural noise peak of the room, so as to allow an anticipated abrupt drop of the background noise in order to return to the baseline sound level, with the result of inducing people instinctively to lower their voice level.
  • the considerable innovation that resides in the apparatuses 1 according to the invention is that the light that they emanate can be a soft light that fits in well with the elegant environment designed by the architect.
  • each apparatus 1 can undergo constant variations (for example, it can evoke the northern lights).
  • the color of the emitted light beam may conveniently shift slowly toward red up to the artificial maximum peak of the musical background (background music) produced by the intelligence of the apparatus 1: once this condition has been passed, the lighting quickly returns to its initial color, thus demonstrating that the apparatus 1 allows a conditioning of the environmental parameters that also induces virtuous behaviors among the people present in the environment in which they are installed.
  • the example of the restaurant is only one of the many fields of application in which the semiotic and synesthetic value of the system of apparatuses 1 according to the invention can improve the experiential path of the users and the quality of the work of the operators.
  • the apparatus 1 according to the invention meets the "stage" requirements with a single product: thanks to the use of apparatuses 1 according to the invention, the function of luminous "backdrop” does not have to be provided at the expense of acoustic performance, which instead remains preponderant and even with the possibility of variations depending on stage setups.
  • the apparatuses 1 according to the invention are configured as customizable design elements, in contrast with the cold character of traditional LED screens.
  • the apparatus 1 according to the invention is at the same time:
  • the apparatus 1 (either as a single element or as part of systems constituted by a specific number of functionally associated apparatuses 1) can find assured and valid application in hotels, reception areas, restaurants, airports, stations, public spaces, waiting rooms, radio or television studios or recording studios, lobbies facing the stalls of a theater (foyer), conference rooms, auditoriums, listening rooms, thermal and wellness environments (spas), home theaters, music therapy environments, motivational booths, and the like.
  • the present invention solves the problems described above by providing an apparatus 1 for the treatment of environmental parameters that is suitable to be fully integrated into the architectural elements of the environment.
  • the apparatus 1 according to the invention is suitable for the sound conditioning of the environment.
  • the apparatus 1 according to the invention is suitable for lighting the environment.
  • the apparatus 1 according to the invention is suitable to modify the environmental parameters of the environment also in an active manner.
  • the apparatus 1 according to the invention is suitable to allowing subsequent reconfigurations of the environment.
  • the apparatus 1 according to the invention is relatively easy to provide in practice and substantially low in cost: these characteristics make the apparatus 1 according to the invention an innovation of assured application.
  • the materials used, as well as the dimensions, may be any according to the requirements and the state of the art.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP22210165.1A 2021-12-15 2022-11-29 Appareil pour le traitement de paramètres environnementaux Pending EP4198387A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT202100031421 2021-12-15

Publications (1)

Publication Number Publication Date
EP4198387A1 true EP4198387A1 (fr) 2023-06-21

Family

ID=80461363

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22210165.1A Pending EP4198387A1 (fr) 2021-12-15 2022-11-29 Appareil pour le traitement de paramètres environnementaux

Country Status (1)

Country Link
EP (1) EP4198387A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2078922A (en) * 1980-06-23 1982-01-13 Miller Herman Inc Combination acoustic conditioner and light fixture
EP2573461A1 (fr) * 2011-09-22 2013-03-27 Koninklijke Philips Electronics N.V. Ensemble d'éclairage acoustique
US20130148357A1 (en) * 2011-12-09 2013-06-13 3M Innovative Properties Company Acoustic light panel
US20140299408A1 (en) * 2011-10-20 2014-10-09 Koninklijke Philips N.V. Optical acoustic panel
US20150109765A1 (en) * 2012-04-12 2015-04-23 Koninklike Philips N.V. Light-emitting acoustic building element
US20160372100A1 (en) * 2013-07-02 2016-12-22 Koninklijke Philips N.V. Sound attenuating panel
GB2565033A (en) * 2017-05-23 2019-02-06 Kp Acoustics Ltd Acoustic resonators

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2078922A (en) * 1980-06-23 1982-01-13 Miller Herman Inc Combination acoustic conditioner and light fixture
EP2573461A1 (fr) * 2011-09-22 2013-03-27 Koninklijke Philips Electronics N.V. Ensemble d'éclairage acoustique
US20140299408A1 (en) * 2011-10-20 2014-10-09 Koninklijke Philips N.V. Optical acoustic panel
US20130148357A1 (en) * 2011-12-09 2013-06-13 3M Innovative Properties Company Acoustic light panel
US20150109765A1 (en) * 2012-04-12 2015-04-23 Koninklike Philips N.V. Light-emitting acoustic building element
US20160372100A1 (en) * 2013-07-02 2016-12-22 Koninklijke Philips N.V. Sound attenuating panel
GB2565033A (en) * 2017-05-23 2019-02-06 Kp Acoustics Ltd Acoustic resonators

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