Connect public, paid and private patent data with Google Patents Public Datasets

Lighting fixture

Download PDF

Info

Publication number
US3511984A
US3511984A US3511984DA US3511984A US 3511984 A US3511984 A US 3511984A US 3511984D A US3511984D A US 3511984DA US 3511984 A US3511984 A US 3511984A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
light
reflector
housing
lamp
spider
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.)
Expired - Lifetime
Application number
Inventor
Ronald G Blaisdell
Hendrik A J De Vos
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.)
Verizon Laboratories Inc
Original Assignee
Verizon Laboratories Inc
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
Grant date

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00Fastening of light sources or lamp holders
    • F21V19/02Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF
    • F21S8/00Lighting devices intended for fixed installation
    • F21S8/04Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/18Latch-type fastening, e.g. with rotary action
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00Arrangement of electric circuit elements in or on lighting devices
    • F21V23/02Arrangement of electric circuit elements in or on lighting devices the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier

Description

May 12, 1970 R. G. BLAISDELL ET AL 3,511,984

LIGHTING FIXTURE Filed Dec. 27, 196'? 2 Sheets-Sheet 1 .ri/ fl l c J FIG. I

INVENTORS RONALD G. BLAISDELL HENDRIK A. J. de VOS TTORN Y y 1970 I R. G. BLAISDELL ETAL 3,511,984

' LIGHTING FIXTURE Filed Dec. 27, 1967 2 Sheet S -Sheet 2 d/d'v/Y 2/ H i E i l U I 2 4 I I I4 FIG. 2

INVENTORS RONALD G. BLAISDELL HENDRIK A. J. de V S BY ATTORNEY United States Patent U.S. Cl. 24044.1 4 Claims ABSTRACT OF THE DISCLOSURE A luminaire for lamps of the metal vapor type in which an adapter ring may be interposed between the housing and the spider as a means for adjusting the relative location of the light center of the lamp with respect to the reflector whereby different light distribution patterns are obtained.

This invention re ates to luminaires and more particularly to lighting fixtures employing high pressure electric gaseous discharge devices, such as metal vapor lamps for example, as the light source.

Luminaires with these light sources are quite expensive as compared to incandescent light sources for example because they require a certain amount of auxiliary equipment for their operation. Further expense is incurred, requiring the purchase of a new luminaire, each time a customer wants to obtain a different light distribution pattern.

In view of the foregoing, the principal object of this invention is to increase the versatility of a luminaire for lamps of the metal vapor type without a significant increase in cost.

This and other objects, advantages and features are attained, in accordance with the principles of this invention by providing a simple means of shifting the relative location of the reflector with respect to the light source in a plane parallel to the longitudinal axis of the light source whereby a different light distribution pattern is obtained.

In the accompanying drawing, FIG. 1 is a front elevational view partly in section of a luminaire embodying the principles of this invention.

FIG. 2 is a fragmentary detail on an enlarged scale of the luminaire of FIG. 1, showing particularly the means employed for varying the relative location of the reflector with respect to the light source.

Referring now to the drawings, the luminaire illustrated therein comprises a housing 2 for the auxiliary electrical equipment normally associated with high pressure electric gaseous discharge devices of the metal vapor type, a lamp socket 4 secured to and depending from the bottom of the housing 2, a lamp 6 seated in the socket 4 and a reflector 8 within which the lamp 6 is disposed. The reflector 8 seats in a reflector support ring 10 with a gasket 12 disposed therebetween. The ring 10 is secured to a spider 14 which is attached to and depends from the bottom of the housing 2 and is concentric with the lamp socket 4. The reflector 8 is secured to the spider 14 by latches 16.

ice

As shown in FIG. 1, the top of the spider 14 is secured directly to and fits snugly against the bottom of the housing 2. When so located, the light source or lamp occupies a certain relative location with respect to the reflector 8 and thus a certain light distribution pattern is obtained. On the other hand, if a different light distribution pattern is desired, an adapter ring 18 is located between the spider 14 and the housing 2 as shown in phantom in FIG. 2. By interposing the adapter ring 18 between the housing 2 and the spider 14, the reflector 8 is .displaced downwardly a distance substantially equal to the Width of the ring because the reflector 8 is attached to the spider 14 by latches 16. The extent of this displacement is illustrated by the showing in phantom in FIG. 1 of the new locus of the peripheral lower edge of the reflector 8. Since the position of the lamp socket 4 has not changed, this displacement of the reflector 8 effects a change in the relative location of the reflector with respect to the light source and thus provides a different light distribution pattern. It will be readily apparent to those skilled in the art that other adapter rings of different lengths may be employed to obtain other light distribution patterns without departing from the spirit of this invention.

What we claim is:

1. A luminaire comprising:

a housing;

a lamp socket secured to and depending from said housing;

a spider secured to and depending from said housing and concentric with said lamp socket;

a reflector secured to said spider;

a lamp seated in said socket and located within said and means for adjusting the relative location of the light center of the lamp with respect to the reflector whereby different light distribution patterns are obtained.

2. The combination of claim 1 in which said adjusting means effects a displacement of the reflector with respect to the lamp.

3. The combination of claim 1 in which said adjusting means is interposed between said housing and said reflector.

4. The combination of claim 1 in which said adjusting means is an adapter ring interposed between said housing and said spider.

References Cited UNITED STATES PATENTS 3,284,624 11/1966 Brasty et a1. 24011.4

FOREIGN PATENTS 240,772 6/1960 Australia. 279,688 10/1914 Germany.

NORTON ANSHER, Primary Examiner R. P. GREINER, Assistant Examiner U.S. Cl. X.R. 240-114, 78

US3511984A 1967-12-27 1967-12-27 Lighting fixture Expired - Lifetime US3511984A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US69390267 true 1967-12-27 1967-12-27

Publications (1)

Publication Number Publication Date
US3511984A true US3511984A (en) 1970-05-12

Family

ID=24786596

Family Applications (1)

Application Number Title Priority Date Filing Date
US3511984A Expired - Lifetime US3511984A (en) 1967-12-27 1967-12-27 Lighting fixture

Country Status (1)

Country Link
US (1) US3511984A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720822A (en) * 1971-01-29 1973-03-13 Xenotech Inc Xenon photography light
US3895227A (en) * 1973-11-09 1975-07-15 Gen Electric Floodlight
US4403277A (en) * 1981-01-30 1983-09-06 Cooper Industries, Inc. Industrial lighting illumination
US5136490A (en) * 1991-05-09 1992-08-04 Lsi Industries, Inc. Electric light fixture with enhanced heat dissipation capability
US6283618B1 (en) 1999-06-07 2001-09-04 Lsi Industries Inc. Luminaire assembly
US20060227563A1 (en) * 2005-04-11 2006-10-12 Reed Mark C Foldable Support for a Domed Illumination Element

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE279688C (en) *
US3284624A (en) * 1964-05-12 1966-11-08 Spero Electric Corp Unitized fixture and assembly

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE279688C (en) *
US3284624A (en) * 1964-05-12 1966-11-08 Spero Electric Corp Unitized fixture and assembly

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3720822A (en) * 1971-01-29 1973-03-13 Xenotech Inc Xenon photography light
US3895227A (en) * 1973-11-09 1975-07-15 Gen Electric Floodlight
US4403277A (en) * 1981-01-30 1983-09-06 Cooper Industries, Inc. Industrial lighting illumination
US5136490A (en) * 1991-05-09 1992-08-04 Lsi Industries, Inc. Electric light fixture with enhanced heat dissipation capability
US6283618B1 (en) 1999-06-07 2001-09-04 Lsi Industries Inc. Luminaire assembly
US6561676B1 (en) 1999-06-07 2003-05-13 Lsi Industries Inc. Luminaire assembly
US6733158B2 (en) 1999-06-07 2004-05-11 Lsi Industries Inc. Wiring box for a luminaire assembly
US20060227563A1 (en) * 2005-04-11 2006-10-12 Reed Mark C Foldable Support for a Domed Illumination Element
US7380967B2 (en) 2005-04-11 2008-06-03 Lsi Industries, Inc. Foldable support for a domed illumination element

Similar Documents

Publication Publication Date Title
US3539801A (en) Light fixture
US3278743A (en) Street light refractor
US3040172A (en) Lighting fixture
US2344221A (en) Lantern
US4450511A (en) Submersible high intensity lamp
US3299263A (en) Luminaire socket support
US4336576A (en) Lighting apparatus
US2945944A (en) Flashlight
US5174648A (en) Lighting fixture support assembly
US3296431A (en) Illuminated display fixture
US2348930A (en) Fluorescent lighting fixture
US4698734A (en) Lensed indirect luminaire with side angle brightness control
US1545711A (en) Electric-lamp structure
US4280167A (en) Operating room surgical lamp
US2038506A (en) Ground light
US3427447A (en) Luminaire optical assembly
US7665866B2 (en) LED luminaire for generating substantially uniform illumination on a target plane
US3158329A (en) Recessed ceiling lighting fixture
US3501627A (en) Airport lighting fixture
US1852740A (en) Lamp
GB1021159A (en) Lamps
US1837091A (en) Lighting system
US2141139A (en) Interiorly illuminated sign
US1909947A (en) Operating room lighting fixture
US3705302A (en) Luminaire