US2583939A - Light-diffusing shield for elongated tubular lamps - Google Patents

Light-diffusing shield for elongated tubular lamps Download PDF

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Publication number
US2583939A
US2583939A US46604A US4660448A US2583939A US 2583939 A US2583939 A US 2583939A US 46604 A US46604 A US 46604A US 4660448 A US4660448 A US 4660448A US 2583939 A US2583939 A US 2583939A
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United States
Prior art keywords
shield
light
elongated tubular
lamp
tubular lamps
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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.)
Expired - Lifetime
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US46604A
Inventor
George O French
Roy Jacques H Du
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PLASTI CATION CORP
PLASTI-CATION Corp
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PLASTI CATION CORP
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Priority to US46604A priority Critical patent/US2583939A/en
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Publication of US2583939A publication Critical patent/US2583939A/en
Anticipated expiration legal-status Critical
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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/04—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages the fastening being onto or by the light source
    • 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
    • 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

Definitions

  • This invention relates to light diffusing shields for tube-type lights such as fluorescent lights at present in general use.
  • One of the prime objects of the invention is to design a very simple, practical, and efiicient attachment for tube-type lamps, which is of neat and pleasing appearance, and which transmits the major portion of the light to give very soft, indirect lighting efiects.
  • Another object is to provide a relatively inexpensive light diffuser, that is instantly attachable and/or detachable from a tube-type lamp, without the use of tools or the requirement of special skill by the workman or person installing.
  • Another object is to design a light diffusing shield including simple, practical and inexpensive clamps by means of which the reflector can be very readily attached to the light tube.
  • Still a further object is to provide a relatively low-cost light diffusing shield, which can be readily manufactured, which can be easily changed to suit changes in decorative eifects and schemes, and which can be formed to any desired shape and size to efficiently difiuse the light rays from a tube-type lamp.
  • Fig. 1 is a side-elevational view of our decorative light diffusing shield, showing it attached to a tube-type lamp which is indicated in broken lines.
  • Fig. 2 is a top, plan, elevational view thereof.
  • Fig. 3 is an enlarged, transverse, sectional view taken on the line 3--3 of Fig. 2.
  • the numeral 5 indicates an elongated, translucent, cylindrical lamp of the type commonly termed fluorescent and to which our light diffusing shield 6 is attached in a manner to be presently described.
  • the diffuser shield or body may be formed of a-single piece of material such as plastic, and is preferably in the form of a substantially semicylindrical member, the face of which can be formed of any desired overall design or pattern,
  • Spaced-apart supporting clamps C serve to releasably suspend the shield from the lamp 5, and these clamps are formed as clearly shown in Fig. 3 of the drawing, being preferably in the form of a stamping, to facilitate mass production and the savings incident thereto.
  • clamps may be made up of a single strip of metal, the outer semi-cylindrical section I of which is of uniform curvature to fit the curvature A cf the shield, the end sections having a return bend 8 spaced from the section I to accommodate the edge sections of the shield therebetween; thence the strip 9 is bent laterally and inwardly at an angle away from the shield; thence being turned upwardly and bowed as shown to form lamp embracing sections III that fit the shape and curvature of the lamp body, the extreme tip being curved outwardly as at H to facilitate its easy attachment to the lamp.
  • Each of the side sections is formed in an iden tically similar manner, and a description of but one side will suffice for both.
  • the clamps C are designed to slidably accommodate the shield when sprung, and when in position on a lamp, frictionally engage therewith to prevent movement with relation thereto, and if desired, rivets (not shown) or any other securing means may be utilized for anchoring the clamps in set position.
  • the clamps are designed to properly space the shield from the body of the lamp to prevent heating and provide clearance to permit easy and quick mounting and/or demounting, and it will be obvious that the shield can be made up in any desired color combination to suit the color scheme in the room in which it is installed.
  • the reflector body may be made up in any desired length, without departing from the appearance .of the assembly, and additional clamps may be added to properly support the reflector and prevent sag.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

Jan. 29, 1952 2,583,939
LIGHT'DIFFUSING SHIELD FOR ELONGATED TUBULAR LAMPS G. o. FRENCH ETAL Filed Aug. 28, 1948 6 W Q I w 2 r w a w m [1% llll .J 1 r u m w W W m n N$WN c k A TTORNE Patented Jan. 29, 1952 LIGHT-DIFFUSING SHIELD FOR ELONGATED TUBULAR LAMPS George 0. French and J acques H. Du Roy, Flint, Mich., assignors to Plasti-Cation Corporation," Flint, Mich., a corporation of Michigan Application August 28,1948, SerialNo.46,604
1 Claim.
This invention relates to light diffusing shields for tube-type lights such as fluorescent lights at present in general use.
One of the prime objects of the invention is to design a very simple, practical, and efiicient attachment for tube-type lamps, which is of neat and pleasing appearance, and which transmits the major portion of the light to give very soft, indirect lighting efiects.
Another object is to provide a relatively inexpensive light diffuser, that is instantly attachable and/or detachable from a tube-type lamp, without the use of tools or the requirement of special skill by the workman or person installing.
Another object is to design a light diffusing shield including simple, practical and inexpensive clamps by means of which the reflector can be very readily attached to the light tube.
Still a further object is to provide a relatively low-cost light diffusing shield, which can be readily manufactured, which can be easily changed to suit changes in decorative eifects and schemes, and which can be formed to any desired shape and size to efficiently difiuse the light rays from a tube-type lamp.
With the above and other objects in view, the present invention consists in the combination and arrangement of parts, hereinafter more fully described, illustrated in the accompanying drawing, and more particularly pointed out in the appended claim, it being understood that changes may be made in the form, size, proportion, and minor details of construction, without departing from the spirit or sacrificing any of the advantages of the invention.
In the drawing:
Fig. 1 is a side-elevational view of our decorative light diffusing shield, showing it attached to a tube-type lamp which is indicated in broken lines.
Fig. 2 is a top, plan, elevational view thereof.
Fig. 3 is an enlarged, transverse, sectional view taken on the line 3--3 of Fig. 2.
Referring now more specifically to the drawing in which we have shown the preferred embodiment of our invention. The numeral 5 indicates an elongated, translucent, cylindrical lamp of the type commonly termed fluorescent and to which our light diffusing shield 6 is attached in a manner to be presently described.
The diffuser shield or body may be formed of a-single piece of material such as plastic, and is preferably in the form of a substantially semicylindrical member, the face of which can be formed of any desired overall design or pattern,
such as can be readily extruded or molded, and while in the present instance we have shown it semi-cylindrical in cross section, it will be understood that it can be of any other shape desired.
Spaced-apart supporting clamps C serve to releasably suspend the shield from the lamp 5, and these clamps are formed as clearly shown in Fig. 3 of the drawing, being preferably in the form of a stamping, to facilitate mass production and the savings incident thereto.
These clamps may be made up of a single strip of metal, the outer semi-cylindrical section I of which is of uniform curvature to fit the curvature A cf the shield, the end sections having a return bend 8 spaced from the section I to accommodate the edge sections of the shield therebetween; thence the strip 9 is bent laterally and inwardly at an angle away from the shield; thence being turned upwardly and bowed as shown to form lamp embracing sections III that fit the shape and curvature of the lamp body, the extreme tip being curved outwardly as at H to facilitate its easy attachment to the lamp.
Each of the side sections is formed in an iden tically similar manner, and a description of but one side will suffice for both.
The clamps C are designed to slidably accommodate the shield when sprung, and when in position on a lamp, frictionally engage therewith to prevent movement with relation thereto, and if desired, rivets (not shown) or any other securing means may be utilized for anchoring the clamps in set position.
The clamps are designed to properly space the shield from the body of the lamp to prevent heating and provide clearance to permit easy and quick mounting and/or demounting, and it will be obvious that the shield can be made up in any desired color combination to suit the color scheme in the room in which it is installed.
When the sections H! are spread to embrace the lamp, the end sections 8 of the clamp are also forced outwardly and downwardly to frictionally grip the edges of the shield and hold it firmly in position.
Obviously, the reflector body may be made up in any desired length, without departing from the appearance .of the assembly, and additional clamps may be added to properly support the reflector and prevent sag.
While in the instant application we have shown the shield as transparent for diffusing the light, it will be obvious that this can be a refiector by means of which the light is reflected as in conventional indirect lighting installation.
What we claim is: The combination with a horizontal tube type lamp, of spaced-apart, resilient clamps suspended from said lamp, each clamp comprising a main, semi-cylindrical section of uniform cur; vature, eachsection being bent to form a return semi-cylindrical section lying parallel with and spaced from the main section, the end sections m of the return sections leading inwardly and downwardly and thence upwardly,said upwardly leading sections being bowed and spaced to yielding the return sections of the clamps back 20 against said shield so that 'said shield is REFERENCES CITED {chewing references are of record in the vfile of this patent:
UNITED STATES PATENTS Number Name Date 1,991,687 Hoegger Apr. 16, 1935 2,004,679 "'Tinnerman June 11-, 1935 2,918,310, Corbett Apr. 17, 1937 2,221,433 5111711 1. Mar. 24, 1942 2,293,672 Bookman Aug. 18, 1942 2,3 4,445 Deane 1. Dec. 8, 1942 2,323,002 Baker June 29, 1942 2,334,005 Hoeveler Nov. 9, 1943 ,336,599 Dunbar Dec. 14, 1943 aha-awe Bpperts Jan. 2, 1945
US46604A 1948-08-28 1948-08-28 Light-diffusing shield for elongated tubular lamps Expired - Lifetime US2583939A (en)

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Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2688072A (en) * 1951-01-30 1954-08-31 Patent License Corp Vehicle lighting fixture
US2740216A (en) * 1953-07-21 1956-04-03 Lieberman Sol Fluorescent lamp shade
US2741694A (en) * 1952-12-22 1956-04-10 Thomstad Magne Vilhelm Shade assembly for light sources of tubular shape
US2794903A (en) * 1954-03-05 1957-06-04 A L Smith Iron Company Light diffusing system
US2824216A (en) * 1954-11-26 1958-02-18 Francis P Brennan Lamp
US2956150A (en) * 1956-11-29 1960-10-11 Robert A D Schwartz Luminous ceiling construction
US3054205A (en) * 1960-07-11 1962-09-18 Sierpin Stanis Letterplate assembly for fluorescent tubes
US3061718A (en) * 1958-07-16 1962-10-30 Thomas C Estes Tube light glare eliminator
US3140055A (en) * 1959-05-19 1964-07-07 John C Long Lamp shield
US3146956A (en) * 1960-05-25 1964-09-01 Robert A D Schwartz Suspended ceiling and lighting system
US3160755A (en) * 1960-05-16 1964-12-08 Safe T Sun Corp Therapeutic radiant energy lamps
US3168987A (en) * 1963-01-17 1965-02-09 Raymond A Heisler Fixture for fluorescent lights and the like
US3377482A (en) * 1965-12-23 1968-04-09 Podany Oldrich Reflector assembly for fluorescent tubes
US4390930A (en) * 1981-04-15 1983-06-28 Herst Lighting Co. Indirect lighting fixture with improved light control
US5301092A (en) * 1992-04-08 1994-04-05 Anthony's Manufacturing Company, Inc. Display case with lens lighting system
US5471372A (en) * 1993-12-06 1995-11-28 Ardco, Inc. Lighting system for commercial refrigerator doors
US5895111A (en) * 1992-04-08 1999-04-20 Anthony's Manufacturing Company, Inc. Display case with lens lighting system
US5902034A (en) * 1992-04-08 1999-05-11 Anthony's Manufacturing Company, Inc. Display case with lens lighting system
DE19911647A1 (en) * 1999-03-16 2000-09-21 Volkswagen Ag Vehicle lamp with fluorescent tube
WO2004055431A1 (en) * 2002-12-16 2004-07-01 Asian Electronics A method of connecting reflectors and louvers to fluorescent lamps
US20050226006A1 (en) * 2004-04-13 2005-10-13 Chen Sheng C Decoration board of night light assembly

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1997687A (en) * 1934-03-22 1935-04-16 Joseph A Hoegger Tubular lighting fixture
US2004679A (en) * 1933-01-09 1935-06-11 Albert H Tinnerman Fastening device
US2078370A (en) * 1936-04-29 1937-04-27 Nat Electric Prod Corp Reflector assembly
US2277433A (en) * 1940-05-01 1942-03-24 Edwin F Guth Plastic diffuser
US2293672A (en) * 1941-02-08 1942-08-18 Railley Corp Lamp shade and method of making same
US2304445A (en) * 1941-04-25 1942-12-08 Doane Products Corp Screen for lighting fixtures
US2323002A (en) * 1941-10-08 1943-06-29 Frederick C Baker Fluorescent light fixture and shade
US2334005A (en) * 1941-08-05 1943-11-09 Pittsburgh Reflector Company Illuminating fixture
US2336599A (en) * 1941-02-17 1943-12-14 Lighting Products Inc Lighting fixture
US2366216A (en) * 1942-02-14 1945-01-02 Dorsey Spencer H Shield for mercury vapor lamps

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2004679A (en) * 1933-01-09 1935-06-11 Albert H Tinnerman Fastening device
US1997687A (en) * 1934-03-22 1935-04-16 Joseph A Hoegger Tubular lighting fixture
US2078370A (en) * 1936-04-29 1937-04-27 Nat Electric Prod Corp Reflector assembly
US2277433A (en) * 1940-05-01 1942-03-24 Edwin F Guth Plastic diffuser
US2293672A (en) * 1941-02-08 1942-08-18 Railley Corp Lamp shade and method of making same
US2336599A (en) * 1941-02-17 1943-12-14 Lighting Products Inc Lighting fixture
US2304445A (en) * 1941-04-25 1942-12-08 Doane Products Corp Screen for lighting fixtures
US2334005A (en) * 1941-08-05 1943-11-09 Pittsburgh Reflector Company Illuminating fixture
US2323002A (en) * 1941-10-08 1943-06-29 Frederick C Baker Fluorescent light fixture and shade
US2366216A (en) * 1942-02-14 1945-01-02 Dorsey Spencer H Shield for mercury vapor lamps

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2688072A (en) * 1951-01-30 1954-08-31 Patent License Corp Vehicle lighting fixture
US2741694A (en) * 1952-12-22 1956-04-10 Thomstad Magne Vilhelm Shade assembly for light sources of tubular shape
US2740216A (en) * 1953-07-21 1956-04-03 Lieberman Sol Fluorescent lamp shade
US2794903A (en) * 1954-03-05 1957-06-04 A L Smith Iron Company Light diffusing system
US2824216A (en) * 1954-11-26 1958-02-18 Francis P Brennan Lamp
US2956150A (en) * 1956-11-29 1960-10-11 Robert A D Schwartz Luminous ceiling construction
US3061718A (en) * 1958-07-16 1962-10-30 Thomas C Estes Tube light glare eliminator
US3140055A (en) * 1959-05-19 1964-07-07 John C Long Lamp shield
US3160755A (en) * 1960-05-16 1964-12-08 Safe T Sun Corp Therapeutic radiant energy lamps
US3146956A (en) * 1960-05-25 1964-09-01 Robert A D Schwartz Suspended ceiling and lighting system
US3054205A (en) * 1960-07-11 1962-09-18 Sierpin Stanis Letterplate assembly for fluorescent tubes
US3168987A (en) * 1963-01-17 1965-02-09 Raymond A Heisler Fixture for fluorescent lights and the like
US3377482A (en) * 1965-12-23 1968-04-09 Podany Oldrich Reflector assembly for fluorescent tubes
US4390930A (en) * 1981-04-15 1983-06-28 Herst Lighting Co. Indirect lighting fixture with improved light control
US6302557B1 (en) 1992-04-08 2001-10-16 New Anthony, Inc. Display case with lens lighting system
US5301092A (en) * 1992-04-08 1994-04-05 Anthony's Manufacturing Company, Inc. Display case with lens lighting system
US5895111A (en) * 1992-04-08 1999-04-20 Anthony's Manufacturing Company, Inc. Display case with lens lighting system
US5902034A (en) * 1992-04-08 1999-05-11 Anthony's Manufacturing Company, Inc. Display case with lens lighting system
US5471372A (en) * 1993-12-06 1995-11-28 Ardco, Inc. Lighting system for commercial refrigerator doors
DE19911647A1 (en) * 1999-03-16 2000-09-21 Volkswagen Ag Vehicle lamp with fluorescent tube
DE19911647B4 (en) * 1999-03-16 2007-04-05 Volkswagen Ag Vehicle lamp with fluorescent tube
WO2004055431A1 (en) * 2002-12-16 2004-07-01 Asian Electronics A method of connecting reflectors and louvers to fluorescent lamps
US20050226006A1 (en) * 2004-04-13 2005-10-13 Chen Sheng C Decoration board of night light assembly

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