US2759094A - Lighting and sound absorbing fixture - Google Patents

Lighting and sound absorbing fixture Download PDF

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Publication number
US2759094A
US2759094A US400578A US40057853A US2759094A US 2759094 A US2759094 A US 2759094A US 400578 A US400578 A US 400578A US 40057853 A US40057853 A US 40057853A US 2759094 A US2759094 A US 2759094A
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United States
Prior art keywords
lighting
canopy
fixture
lighting unit
sound absorbing
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Expired - Lifetime
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US400578A
Inventor
Charles H Goddard
Max M Thomsen
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GTE Sylvania Inc
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Sylvania Electric Products Inc
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Publication date
Application filed by Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Priority to US400578A priority Critical patent/US2759094A/en
Application granted granted Critical
Publication of US2759094A publication Critical patent/US2759094A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
    • 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
    • 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
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • 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
    • F21Y2113/00—Combination of light sources

Definitions

  • This invention relates to lighting fixtures and more particularly to lighting fixtures having acoustical properties.
  • An object of this invention is to integrate the lighting and acoustical facilities in a room in order to effect a substantial improvement in room environment.
  • Another object is to provide lighting and acoustical facilities which do not require expensive alterations of existing structures or extentive labor to install.
  • a further object is to integrate lighting and acoustical facilities in a unitary fixture with a minimum of alteration of available lighting units.
  • a further object is to provide a self-contained lighting and acoustical unit utilizing a common mounting means.
  • a further object is to provide a self-contained lighting and acoustical unit which requires but one outlet box.
  • a lighting unit with an inverted canopy having sound-absorbing material disposed therein, the side Walls of the canopy serving as reflectors for the light sources of the lighting unit and being a definite part thereof.
  • Figure l is an exploded view of one embodiment of a fixture of this invention.
  • Figure 2 is a partial transverse sectional view thereof.
  • Figure 3 is a side elevational view thereof.
  • the specific embodiment of the lighting fixture of this invention shown in the drawing comprises three main components, viz., a mounting plate 10, an inverted canopy 12 and a lighting unit 14, the canopy being wider than the lighting unit.
  • the mounting plate 10 which is attached to a mounting surface 16 by bolts 18, has a plurality of bolts 20 depending therefrom.
  • the inverted canopy 12 and the lighting unit 14 are supported from the mounting plate by the bolts 20 which extend through the inverted canopy 12 and the chassis 22 of the lighting unit 14 and which are provided with nuts 24.
  • the side walls 26 of the inverted canopy 12 are curved sheets of sound-transmitting material, such as perforated metal plates for example.
  • a body of sound-absorbing material 28, such as glass fibers or cork for example, is disposed within the inverted canopy along the side walls 26 thereof.
  • the lighting unit 14 comprises a channel chassis 22, and plates 30 mounted on the ends of chassis 22 and a sub- 2,759,094 Patented Aug. 14, 1956 stantially V-shaped reflector 32 which lies beneath chassis 22 and which is supported at each end by a spring latch 34 mounted on the inside face of each end plate 30, as is shown in U. S. Patent 2,525,553.
  • Lampholders 36 one of which is shown in Figure 2, mounted on the inside face of each end plate 30, support fluorescent lamps 38.
  • Light-diffusing panels 40 enclose the bottom and sides of the lighting unit 14. Each light-diffusing panel 40 is supported along one of its longitudinal edges by a panelsupporting strip 42 attached to the V-sh-aped reflector 32 along the apex edge thereof.
  • each light-diffusing panel 40 is bent back on itself and is hung on tabs 44 mounted on the inside face of the end plates 30.
  • the panels 40 are securely retained in position by latches 46 pivotally mounted on the inside face of end plates 30.
  • the top of the lighting unit 14 directly above the lamps 38 is open.
  • the side walls 26 of the inverted canopy 12 serve as reflectors for that portion of the light from the lamps which radiates upwardly.
  • a lighting fixture comprising: an inverted canopy having light-reflecting, sound-transmitting sides curved inwardly and downwardly and terminating in a truncation; a body of sound-absorbing material disposed within said inverted canopy and along said sides thereof; and a lighting unit disposed beneath said inverted canopy and attached thereto, said lighting unit including two light sources spaced from one another and spaced laterally from the longitudinal edges of said truncation whereby direct light from each light source is reflected downwardly by the side of said canopy adjacent thereto.
  • a lighting fixture comprising: a mounting plate; an inverted canopy supported from said mounting plate and disposed therebeneath, said inverted canopy having lightreflecting, sound-transmitting sides curved inwardly and downwardly and terminating in a truncation; a body of sound-absorbing material disposed within said inverted canopy and along said sides thereof; and a lighting unit disposed beneath said inverted canopy and in abutting relationship with respect thereto, said lighting unit including two light sources spaced from one another and spaced laterally from the longitudinal edges of said truncation whereby light from each light source is reflected downwardly by the side of said canopy adjacent thereto.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Building Environments (AREA)

Description

Aug. 14, 1956 c. H. GODDARD ET AL 2,759,094
LIGHTING AND SOUND ABSORBING FIXTURE Filed Dec. 28, 1955 my 7 AV 5} INVENTOR CHARLES H. QDDA D A AAX M THOMSEN ATTO EY United States Patent LIGHTING AND SOUND ABSORBING FIXTURE Charles H. Goddard, Newburyport, Mass., and Max M. Thomsen, Moundsville, W. Va., assignors to Sylvania Electric Products Inc., Salem, Mass, a corporation of Massachusetts Application December 28, 1953, Serial No. 400,578
2 Claims. (Cl. 2402) This invention relates to lighting fixtures and more particularly to lighting fixtures having acoustical properties.
An object of this invention is to integrate the lighting and acoustical facilities in a room in order to effect a substantial improvement in room environment.
Another object is to provide lighting and acoustical facilities which do not require expensive alterations of existing structures or extentive labor to install.
A further object is to integrate lighting and acoustical facilities in a unitary fixture with a minimum of alteration of available lighting units.
A further object is to provide a self-contained lighting and acoustical unit utilizing a common mounting means.
A further object is to provide a self-contained lighting and acoustical unit which requires but one outlet box.
These and other objects, advantages and features are attained in accordance with the principles of our invention by providing a lighting unit with an inverted canopy having sound-absorbing material disposed therein, the side Walls of the canopy serving as reflectors for the light sources of the lighting unit and being a definite part thereof.
In the specific embodiment of the invention shown in the accompanying drawings,
Figure l is an exploded view of one embodiment of a fixture of this invention.
Figure 2 is a partial transverse sectional view thereof.
Figure 3 is a side elevational view thereof.
Basically, the specific embodiment of the lighting fixture of this invention shown in the drawing comprises three main components, viz., a mounting plate 10, an inverted canopy 12 and a lighting unit 14, the canopy being wider than the lighting unit. The mounting plate 10, which is attached to a mounting surface 16 by bolts 18, has a plurality of bolts 20 depending therefrom. The inverted canopy 12 and the lighting unit 14 are supported from the mounting plate by the bolts 20 which extend through the inverted canopy 12 and the chassis 22 of the lighting unit 14 and which are provided with nuts 24. The side walls 26 of the inverted canopy 12 are curved sheets of sound-transmitting material, such as perforated metal plates for example. A body of sound-absorbing material 28, such as glass fibers or cork for example, is disposed within the inverted canopy along the side walls 26 thereof.
The lighting unit 14 comprises a channel chassis 22, and plates 30 mounted on the ends of chassis 22 and a sub- 2,759,094 Patented Aug. 14, 1956 stantially V-shaped reflector 32 which lies beneath chassis 22 and which is supported at each end by a spring latch 34 mounted on the inside face of each end plate 30, as is shown in U. S. Patent 2,525,553. Lampholders 36, one of which is shown in Figure 2, mounted on the inside face of each end plate 30, support fluorescent lamps 38. Light-diffusing panels 40 enclose the bottom and sides of the lighting unit 14. Each light-diffusing panel 40 is supported along one of its longitudinal edges by a panelsupporting strip 42 attached to the V-sh-aped reflector 32 along the apex edge thereof. The other longitudinal edge of each light-diffusing panel 40 is bent back on itself and is hung on tabs 44 mounted on the inside face of the end plates 30. The panels 40 are securely retained in position by latches 46 pivotally mounted on the inside face of end plates 30. The top of the lighting unit 14 directly above the lamps 38 is open. Thus the side walls 26 of the inverted canopy 12 serve as reflectors for that portion of the light from the lamps which radiates upwardly.
Although a specific type of lighting unit has been shown and described in the specific embodiment of the lighting fixture of this invention, it will be apparent to those skilled in the art that other types of lighting units may be readily adapted for integration with the acoustical unit without departing from the spirit of the invention.
What We claim is:
1. A lighting fixture comprising: an inverted canopy having light-reflecting, sound-transmitting sides curved inwardly and downwardly and terminating in a truncation; a body of sound-absorbing material disposed within said inverted canopy and along said sides thereof; and a lighting unit disposed beneath said inverted canopy and attached thereto, said lighting unit including two light sources spaced from one another and spaced laterally from the longitudinal edges of said truncation whereby direct light from each light source is reflected downwardly by the side of said canopy adjacent thereto.
2. A lighting fixture comprising: a mounting plate; an inverted canopy supported from said mounting plate and disposed therebeneath, said inverted canopy having lightreflecting, sound-transmitting sides curved inwardly and downwardly and terminating in a truncation; a body of sound-absorbing material disposed within said inverted canopy and along said sides thereof; and a lighting unit disposed beneath said inverted canopy and in abutting relationship with respect thereto, said lighting unit including two light sources spaced from one another and spaced laterally from the longitudinal edges of said truncation whereby light from each light source is reflected downwardly by the side of said canopy adjacent thereto.
References Cited in the file of this patent UNITED STATES PATENTS 2,525,553 Kingston et al. Oct. 10, 1950 2,659,807 Wakefield Nov. 17, 1953 2,659,808 Beckwith Nov. 17, 1953 FOREIGN PATENTS 593,235 Great Britain Oct. 10, 1947
US400578A 1953-12-28 1953-12-28 Lighting and sound absorbing fixture Expired - Lifetime US2759094A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2994401A (en) * 1958-05-26 1961-08-01 American Mach & Foundry Acoustic panel
US3372270A (en) * 1965-09-22 1968-03-05 Emerson Electric Co Ceiling modules
DE19620209A1 (en) * 1996-05-20 1997-11-27 Zumtobel Licht Luminaire with a profiled base body as a support for at least one lamp
US5823656A (en) * 1995-10-10 1998-10-20 Herbert Waldman Gmbh & Co. Wide-dispersion lamp assembly
US20080223653A1 (en) * 2007-03-16 2008-09-18 Seoul National University Industry Foundation Poroelastic acoustical foam having enhanced sound-absorbing performance
WO2012042429A3 (en) * 2010-09-30 2012-06-07 Koninklijke Philips Electronics N.V. Illumination device and luminaire
WO2012110908A1 (en) * 2011-02-18 2012-08-23 Koninklijke Philips Electronics N.V. A luminaire comprising a fixture and at least one lighting element, as well as such a fixture
USD792628S1 (en) * 2015-10-30 2017-07-18 Zumbotel Lighting Gmbh Luminaire
US10672376B1 (en) 2019-04-01 2020-06-02 Eaton Intelligent Power Limited Acoustic luminaires

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB593235A (en) * 1945-07-19 1947-10-10 Holophane Co Inc Improvements in and relating to light fittings for ceilings designed for acoustical purposes
US2525553A (en) * 1950-02-28 1950-10-10 Sylvania Electric Prod Fluorescent lighting fixture with quick detachable reflector
US2659807A (en) * 1949-05-16 1953-11-17 F W Wakefield Brass Company Combination luminous and acoustical ceiling
US2659808A (en) * 1949-06-22 1953-11-17 F W Wakefield Brass Company Combination luminous and acoustical ceiling

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB593235A (en) * 1945-07-19 1947-10-10 Holophane Co Inc Improvements in and relating to light fittings for ceilings designed for acoustical purposes
US2659807A (en) * 1949-05-16 1953-11-17 F W Wakefield Brass Company Combination luminous and acoustical ceiling
US2659808A (en) * 1949-06-22 1953-11-17 F W Wakefield Brass Company Combination luminous and acoustical ceiling
US2525553A (en) * 1950-02-28 1950-10-10 Sylvania Electric Prod Fluorescent lighting fixture with quick detachable reflector

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2994401A (en) * 1958-05-26 1961-08-01 American Mach & Foundry Acoustic panel
US3372270A (en) * 1965-09-22 1968-03-05 Emerson Electric Co Ceiling modules
US5823656A (en) * 1995-10-10 1998-10-20 Herbert Waldman Gmbh & Co. Wide-dispersion lamp assembly
DE19620209A1 (en) * 1996-05-20 1997-11-27 Zumtobel Licht Luminaire with a profiled base body as a support for at least one lamp
EP0898686A1 (en) † 1996-05-20 1999-03-03 Zumtobel Staff GmbH Lighting fitting with a basic unit as support for at least one lamp
US6155693A (en) * 1996-05-20 2000-12-05 Zumtobel Staff Gmbh Lighting fitting with a basic unit as support for at least one lamp
EP0898686B2 (en) † 1996-05-20 2008-02-20 Zumtobel Lighting GmbH Lighting fitting with a basic unit as support for at least one lamp
US20080223653A1 (en) * 2007-03-16 2008-09-18 Seoul National University Industry Foundation Poroelastic acoustical foam having enhanced sound-absorbing performance
WO2012042429A3 (en) * 2010-09-30 2012-06-07 Koninklijke Philips Electronics N.V. Illumination device and luminaire
US20130201690A1 (en) * 2010-09-30 2013-08-08 Koninklijke Philips Electronics N.V. Illumination device and luminaire
CN104251462A (en) * 2010-09-30 2014-12-31 皇家飞利浦电子股份有限公司 Illumination device and luminaire
EP2792936A3 (en) * 2010-09-30 2014-12-31 Koninklijke Philips N.V. Illumination device
CN104251462B (en) * 2010-09-30 2016-10-26 皇家飞利浦电子股份有限公司 Illuminator and light fixture
US10030850B2 (en) * 2010-09-30 2018-07-24 Philips Lighting Holding B.V. Illumination device and luminaire
WO2012110908A1 (en) * 2011-02-18 2012-08-23 Koninklijke Philips Electronics N.V. A luminaire comprising a fixture and at least one lighting element, as well as such a fixture
USD792628S1 (en) * 2015-10-30 2017-07-18 Zumbotel Lighting Gmbh Luminaire
USD802820S1 (en) * 2015-10-30 2017-11-14 Zumbotel Lighting Gmbh Luminaire
US10672376B1 (en) 2019-04-01 2020-06-02 Eaton Intelligent Power Limited Acoustic luminaires
US10755685B1 (en) * 2019-04-01 2020-08-25 Signify Holding B.V. Acoustic luminaires

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