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Publication numberUS2451580 A
Publication typeGrant
Publication dateOct 19, 1948
Filing dateDec 7, 1946
Priority dateDec 7, 1946
Publication numberUS 2451580 A, US 2451580A, US-A-2451580, US2451580 A, US2451580A
InventorsAbram Schwinger
Original AssigneeAbram Schwinger
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Combined fluorescent and filament lamp reflector unit
US 2451580 A
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Description  (OCR text may contain errors)

Oct. 19, 1948. A. scHwlNGER 2,451,530

('.OMBINED FLUORESCENT AND FILAMENT' LAMP REFLECTOR UNIT Filed Dec. '7. 1946 [lll/I Inventor attorney Patented Oct. 19, 1948 COMBINED FLUORESCENT AND FILAMENT LAMP REFLECTOR UNIT Abram Schwinger, Philadelphia, Pa.

Application December 7, 1946, Serial No. 714,'7771 Y 1 Claim. 1

My invention relates to a floor lamp, 'and relates more particularly to an adjustable iioor lamp in which an ordinary incandescent or lament lamp and a separate fluorescent lamp can be used separately or simultaneously Floor lamps having reflectors have been used heretofore, but the rellectors have been fixed so that the light rays cannot be directed at an angle, as for reading purposes. Instead provision is made for switching on additional lamps or eXtra filaments Within the same lamp, so that the amount of light in the readers direction will be correspondingly increased. This procedure is obviously wasteful of electric power. Also, since most of the wattage of an incandescent-l lamp is actually dissipated as heat, the use of lamps yielding suicient light intensity for reading purposes may result in the production of 'an uncomfortable amount of heat.

It is Well known that the light produced by an incandescent lamp contains more red 'and infrared rays than daylight, and objects seen in this light appear unnaturally yellow. Conversely, the light emitted by a fluorescent lamp contains an abundance of Violet and ultra-Violet rays, and objects appear unnaturally bluish in this kind of light.

It is an object of my invention to provide a floor or reading lamp employing both kinds of light, whereby one will complement the other and a light similar to ydaylight will result.

Another object of my invention is to provide a oor lamp which ycan be focused or directed, so that lamps of smaller wattage can be employed and the useful light output actually increased.

Another object of my invention is to provide a reading lamp which is cooler in operation, and which will produce la soft diffused light eminently suitable for the purpose described.

Another object of my invention is to provide a licor or reading lamp in which the lamp socket will operate continuously without danger of overheating.

Other objects of rny invention are to provide an improved device of the character described, that is easily and economically produced, which is sturdy in construction, and which is highly efflcient in operation.

With the above and related objects in view, my i invention consists in the detail-s of construction and combinationof parts, as will be more fully understood from the follow-ing description, when read in -oonjunction with the 'accompanying drawing in which:

Fig. 1 is a fragmentary sectional View showing my invention yas applied to a floor lamp.

Fig. 2 is an enlarged View showing the lamp and reflector in different positions.

Fig. 3 is a fragmentary section along the line 3 3 of Fig. 1.

Referring n-ow to the drawing, wherein similar reference ycharacters refer to similar parts, I show a floor lamp having a pedestal l 0 wherein a fluorescent lamp ballast and starter (not shown) are housed. The 4base l0 supports a Vertical stem I2., which carries a bell-shaped hanger I4 made preferably of tubing, so that the wiring can be concealed therein. The top of the hanger is split and the ends lare threaded into a hollow globular fitting 40. A downwardly extending portion 40A of fitting -40 screws into a hollow swivel or universal joint I 6. The joint I6 likewise has -a lower portion |6A which threads through a hollow sphere 44 and into the end of a common hickey 4'2 concealed therein. Likewise, a three-position switch 34 is mounted in the wall of the sphere 44, which is constructed in two hemispheres for convenience. The lower portion 42A of the hickey extends out of the bottom of the sphere and supports the lamp assembly proper.

rIhe elements of the lamp assembly taken in downward order from the hollow globe 44 consist of a con-cave shade 24, a perforated canopy 20, an inner canopy and reflector 28 and an incandescent lamp socket 22 into which the lower end 42A of the hickey is'screwed. A large shade 3B descends from the vperforated `canopy 20 and serves also to support an annular fluorescent tube 30 and a circular disc of translucent or light-diffusing glass 32. A channel member 46 hugging the wall of shade 36 extends downwardly, so as to form a conduit for the wires supplying the fluorescent tube 30.

The incandescent lamp 26 and the fluorescent lamp 30 are connected electrically to the threeway switch so that both, vor either one individually, will operate. The primary application of the lamp, of course, is 'in having both lamps operate simultaneously.

The light from the incandescent lamp is directed by reflector 28 through the diffusing disc 32. Likewise, the light from the fluorescent lamp 30 passes through the diffusing disc. The resultant light emitted lby the lamp is soft, white and glareless.

As the air surrounding the socket 22 becomes heated it escapes through the perforated canopy 20. A continuous convection -current is thereby set up, which cools the socket.

The lamp being universally hung ycan be directed at almost Aany desired angle, Vas shown in Fig. l2. `Since the light is directed, bulbs of smaller Wattage Vthan are usual for lamps of this type are employed, with correspondingly cooler operation. The invention may lalso be applied to floor lamps, table lamps, or Wall lamps.

Although my |invention has been described in considerable detail, `such description is intended as being illustrative rather than limiting, since the invention may be variously embodied, and the scope `of .the invention is to be -determined as claimed.

I claim as my invention:

A reading lamp comprising `a base housing, a ballast and starter Within said housing, a vertical ysupport carrying a hanger-member, said hanger member in turn supporting universally 'la lament lamp socket with `a lament lamp therein, a perforated -canopy surroun-ding the body 4of Said socket, a disc of translucent glass beneath said lament lamp, an annular fluorescent lamp ad- Vjacent said translucent disc and a reflector sur- 4 rounding said filament lamp whereby light from both the filament lamp and the fluorescent lamp are mixed and diffused through said translucent disc and may be directed at a plurali-ty of angles.


REFERENCES CITED The following referencesare of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,966,059 Ch'iera July 10, 1934 2,215,634 Collins etal Sept. 24, 1940 2,262,416 Winkler NOV. 11, 1941 2,307,977 Wellman Jan. 12, 1943 2,350,462 Johns June 6, 1944 FOREIGN PATENTS Number Country Date 397,006 Great Britain l 1933

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1966059 *Mar 13, 1933Jul 10, 1934George SlaffProduction of white light
US2215634 *Jun 3, 1939Sep 24, 1940Westinghouse X Ray Company IncHospital sterilizing unit
US2262416 *Feb 26, 1938Nov 11, 1941Westinghouse Electric & Mfg CoCombination lighting unit
US2307977 *Feb 20, 1941Jan 12, 1943Wellman Lester RMultiple lamp
US2350462 *Oct 9, 1942Jun 6, 1944Robert I JohnsPortable lamp
GB397006A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2725461 *Nov 12, 1952Nov 29, 1955Analite CorpArtificial daylight lamp
US3027669 *Nov 30, 1959Apr 3, 1962George K C HardestyIllumination system for instrument panel display
US3093319 *Oct 21, 1960Jun 11, 1963Alfred Gamain Charles HenriApparatus for producing artificial daylight
US3152763 *Jun 9, 1960Oct 13, 1964Marvin GangbinArtificial daylight fixture
US3930148 *Jul 22, 1974Dec 30, 1975Gruen WilliamComposite light source
US4956751 *Jun 12, 1989Sep 11, 1990Tetsuhiro KanoFor producing light closely resembling natural daylight
US7121684Jun 10, 2004Oct 17, 2006Genlyte Thomas Group, LlcGarage light luminaire with circular compact fluorescent emergency lighting optics
U.S. Classification362/1, 362/216, 362/294
International ClassificationF21S8/00
Cooperative ClassificationF21Y2113/00, F21S6/005
European ClassificationF21S6/00S