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Publication numberUS1900551 A
Publication typeGrant
Publication dateMar 7, 1933
Filing dateFeb 28, 1931
Priority dateFeb 28, 1931
Publication numberUS 1900551 A, US 1900551A, US-A-1900551, US1900551 A, US1900551A
InventorsGuth Edwin F
Original AssigneeGuth Edwin F
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Lighting unit for reflected illumination
US 1900551 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

March 7, 1933. E. F. GUTH LIGHTING UNIT FOR REFLECTED ILLUMINATION File d F b, 5 sheets-sheet 1 ,INVENT OR.

TTORNEY March 7, 1933. E; GUTH 1,900,551

LIGHTING UNIT FOR REFLECTED, ILLUMINATION F iled Feb. 28, 1931 3 Sheets-Sheet 2 INVENTOR Mafia/W ATTORNEY March 7, E F H 1,900,551


My invention relates to that class of lighting fixtures which are described in my copending application, Serial No. 503,128. It is well known that the type of lighting known as indirect is greatly favored by engineers because it so closely approximates daylight. It is also well known that there has sprung up in art circles, a type known as modernistic, which has attained considerable vogue and has been adapted by interior decorators, etc., so that it is necessary to have lighting fixtures to correspond to such modernistic period.

My invention has for its object to produce a fixture which will fit into a modernistic room and which will also provide a very efficient manner of utilizing indirect lighting.

My means of accomplishing the foregoing objects may be more readily comprehended by having reference to the accompanying drawings, in which- Fig. 1 is a front elevation of my improved vertical indirect light;

Fig. 2 is an enlarged cross sectional view of the reflector;

Fig. 3 is a similar View showing a modified form of reflector;

Fig. 4 is an enlarged vertical sectional view, the lamps being shown in elevation; 30 Fig. 5 is a detail view of the lamp mount- Fig. 6 is a front view of a modified form using a single reflector; V 35 Fig. 7 is a vertical sectional view of the device where a single reflector is used;

Fig. 8 is a cross section of the device as shown in Fig. 6; and

Fig. 9 is a cross section of the modified form of reflector where a single reflector is used.

Similar reference numerals refer to similar parts throughout the entire description.

As shown in the drawings, I provide a frame 1 which comprises upper and lower ends 1 and 2 which are connected by sides 3 Serial No. 518,976.

and and a central member 5. The lamps 6 are mounted in pairs and are carried by sockets 7, which are carried by Ts 8, these Ts are provided with threaded hollow lugs 9 which extend through the center 10 of the reflector 11, being secured by means of a nut 12 or in any other convenient manner. The reflector is formed with two concave wings 13 and 14 which are preferably coated with porcelain enamel, each wing is provided with a series of longitudinal convex corrugations. By locating the lamps 6 at the center of the two wings, I am able to overcome any tendency of the reflector to exhibit excessive brightness as this only permits one-half of the light flux to reach each wing of the reflector thereby entirely avoiding glare and giving a very beautiful soft light. 'The corrugations, when the lamps are illuminated, resemble a series of glass tubes or pillars, having the lights inside of them, conveying an almost indescribable impression, while aflording a most satisfactory illuminant.

In some cases where a most decided modernistic or impressionistic effect is sought or desired, it may be found desirable to form the wings of the reflector in the modified form shown in Fig. 3, in which a plurality of Iongitudinal steps with plane surfaces are shown, these heighten the effect produced when the lamps are illuminated.

As shown in Figs. 6 to 9 inclusive, I provide a casing 20, in which Imount a single reflector 21, which has a plurality of convex corrugations 22. lVhere this construction is utilized, I mount the lamps 23 behind a supp'emental reflector 24, which redirects the light from the source 23 to the reflector 21. The lamps 23 are conveniently carried in sock- 85 ets 25 which are mounted in a flat portion 26 of the reflector 21. This construction also produces the illusion of glass tubes possessed by the double reflector heretofore described.

Having described my invention what I re- 0 gard as new and desire to secure by Letters Patent of the. United States, is:

1. A frame, a reflector mounted therein, a

central member on said frame, a plurality ofelectric lamps at the junction of said wings and extending longitudinally thereof and behind said central member, said reflector having two concave wings, a plurality of longitudinal corrugations on each of said wings. 2. A frame, a reflector mounted therein, a central member on said frame, a pluralit of electric lamps behind said central mem r, means to secure said lamps at the junction of the wings of the reflector and longitudinally thereof, said reflector having two concave wings, a plurality of longitudinal corrugations on each of said wings.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2423884 *Jul 31, 1944Jul 15, 1947Walter GlassReflector shield unit for germicidal lamps
US2530133 *Jun 8, 1946Nov 14, 1950Bausch & LombIlluminating device for uniformly and diffusely illuminating a background
US2591661 *Mar 7, 1947Apr 1, 1952Century Lighting IncReflector for controlling at a predetermined angle direct and reflected rays from a light source
US3009054 *Jun 21, 1957Nov 14, 1961Prism Signs IncPrismatic lighting fixture
US3233096 *Jun 28, 1965Feb 1, 1966Schmitt HeinrichDevice for increasing the usable luminous flux of fluorescent lamps
US4173036 *Nov 21, 1977Oct 30, 1979The United States Of America As Represented By The Secretary Of The NavyWavy mirror transmitter optics
US4229779 *May 19, 1978Oct 21, 1980International Telephone And Telegraph CorporationLuminaire with arcuate reflector
US5014174 *Feb 6, 1989May 7, 1991Joung H. WonAluminum, polyester
US5448462 *May 21, 1993Sep 5, 1995Pittway CorporationStrobe for detector
US5546293 *Jun 1, 1995Aug 13, 1996Pittway CorporationStrobe for detector
US5988836 *Jul 31, 1997Nov 23, 1999Swarens; Ralph W.Recessed indirect fluorescent light fixture with flexible reflector
US7195366 *Jul 23, 2004Mar 27, 2007Lg. Philips Lcd Co., Ltd.Backlight unit of liquid crystal display device and reflective means therein
US7229192 *Oct 21, 2004Jun 12, 2007Acuity Brands, Inc.Light fixture and lens assembly for same
US7481552 *Sep 14, 2006Jan 27, 2009Abl Ip Holding LlcLight fixture having a reflector assembly and a lens assembly for same
US8153894Apr 1, 2009Apr 10, 2012Abl Ip Holding LlcMounting system
US8220957Apr 1, 2009Jul 17, 2012Abl Ip Holding LlcRetrofit light assembly
CN100507352CMar 15, 2004Jul 1, 2009皇家飞利浦电子股份有限公司Luminaire
DE3129038A1 *Jul 17, 1981Feb 3, 1983Willing AchimIlluminated sign
WO2004083719A1Mar 15, 2004Sep 30, 2004Petrus A J HoltenLuminaire
U.S. Classification362/348
International ClassificationF21V7/09, F21V7/00
Cooperative ClassificationF21V7/005, F21Y2103/00, F21V7/09, F21V7/0016
European ClassificationF21V7/09, F21V7/00A1, F21V7/00E