US 2516660 A
Description (OCR text may contain errors)
July 25, 1950 K. VERSEN 2,516,660
RECESSED LIGHTING FIXTURE WITH REMOVABLE REFLECTOR Filed July 20, 1946 IN VEN TCR.
KURT ERSEN V ATTORNEY Patented July 25, 1950 UNITED STATES PATENT OFFICE RECESSED LIGHTING FIXTURE WIT I REMOVABLE REFLECTOR Kurt Versen, Tenafly, N. 3. Application July 20, 1946, Serial No. 685,075
2 Claims. 1
This invention deals with lighting fixtures embodying a reflector and is concerned especially with the installation of a reflector within such lighting fixtures. In particular the invention is directed to the provision of a detachable reflector in lighting fixtures embodying a reflector located behind the light source, especially in ceiling lighting fixtures such as fixtures recessed within and behind overhead ceilings.
Recessed lighting fixtures, whether for incandescent or fluorescent lighting, comprise a fixture housing recessed Within the overhead ceiling. The electrical wiring and the auxiliary equipment, if any, for the light source are normally contained, in one Way or another, Within such fixture housing and the light source itself is likewise provided within such housing. The wiring and the auxiliary electrical equipment are advantageously spaced from the light source by an intermediate cover which may also serve as a reflector. The reflector functions-insofar as light reflection is concernedto properly distribute the light output of the light source and to increase the effective utilization of such light output.
It is, of course, well known to provide reflectors in lighting fixtures. Such reflectors are customarily secured within the luminaire by suitable locking means such as screws, bolts and so forth. Lighting fixtures embodying such reflectors suffer, however, from a number of shortcomings. Thus, for instance, it is necessary to have access to the wiring and auxiliary equipment for purposes of inspection, cleaning and repair, and such access is interfered with by the fastening means, such as screws, employed for securing the reflector in place. Also, proper effective light distribution depends on a fixed relationship between the light source, reflecting surface and other parts of the lighting fixture, and the utilization of such fastening means as for instance vertically operative screws or bolts makes it impossible to effect in practice a predetermined invariably fixed relationship between the reflector and the other component parts of the lighting fixture.
Attempts have, therefore, been made heretofore to devise means for effecting an easier removability of the reflector. Thus it has been proposed for instance to secure the reflector in place by means of special locking and release clips. All such special devices are, however, complicated and cumbersome in actual practice and are apt, furthermore, to fail in the course of time, especially at a time when failure is particularly undesirable, so that in general practice the art has continued to rely on the customary locking means involving the utilization of screws, bolts and the like.
It is, therefore, one object of my invention to provide a lighting fixture including a reflector Q 2 which shall be capable of being removed easily and quickly, thusafiording easy and quick access to the electrical wiring and auxiliary equipment covered by it without the use of auxiliary tools, Wrenches, screw-drivers and so forth. It is a further object of my invention to provide such lighting fixture wherein such reflector shall be secured therein without the employment of screw-threaded fastening means and Without special auxiliary locking devices. It is another object of my invention to provide such fixture wherein the reflector shall be capable of being secured in a fixed predetermined position within such fixture and in invariable relationship to the light source and other parts of the fixture, thus making impossible any effective interference with the predetermined optical train of the light distribution. Other objects and advantages of the lighting fixture of my invention will appear from the description thereof hereinafter following.
In the lighting fixture of my invention I provide the customary fixture housing, which embodies the usual electrical auxiliary equipment such for example as ballast, transformer, etc., socket and electrical Wiring and so forth, reflector, light source and any other required or desired component parts.
In accordance with the invention the reflector is secured, firmly but detachably, within the fixture in laterally operative manner involving the utilization of the inherent flexibility and springiness of the curved or bent reflector in cooperation with a plurality of supports adapted to limit and set the outwardly directed spring action of the reflector and to reinforce the reflector to avoid distortion of the housing, and without special looking devices, and thereupon locking the reflector in position by lateral compression and subsequent release of such compression and consequent positioning within a specially provided recess.
The lighting fixture according to the invention is illustrated in the accompanying drawing, forming part hereof, which represents a perspective elevational view, partly broken away, of the essential structural parts of the lighting fixture of the invention, in the form of a recessed ceiling luminaire.
In the drawing I have shown a fixture housing A and a reflector B. The reflector B, in the illustration, is of the elongated type, customarily used in connection with straight elongated tubular lamps, e. g. fluorescent lamps, of substantially inverted trough-like shape with an inwardly curved reflecting surface which may comprise a single concave surface or, as shown, a substantially flat main top wall I and side walls 2 and The reflector extends longitudinally of and be- ;cesses-4 and l. 'as -a support for'the lateral ends of the reflector -B'which are preferably formed with a turnedover edge or 'fiange 5, as shown. The gusset plates 3 may serve additionally as a strengthening support for the housing A, in which case, as
port is in the form of at least two gusset plates 3, transverse to the reflector, provided with re- The plurality of recesses'serve shown, they follow the contours of such housing A. "-The recessed supports 4 and 4"-whether part of a special plate or integral with the housing-itself or otherwisereceive and seat the outer edge or edges of the reflector limiting the lateral :outwardly directed spring action of the reflector and control the movement and position of the reflector. The light source is shown in the form oftwo tubular bulbs l and I.
The entire lighting fixture may be secured in any suitable manner, for instance, as shown in thedrawing, by being clamped to the ceiling 6 and recessed therewithin.
The reflector B is secured within the fixture merely by being seated on and supported by the recesses '4 and 4. In thus securing the re- '-flecto-rand in removing the reflector-I rely on the inherent flexibility and springiness of the reflector, which flexibility and springiness are particularly great in the case of an inverted trough-like reflector shaped as more specifically illustrated in the drawing. In practice the reflector is inserted by lateral compression and subsequentpositioning over the recesses of the lateral brace or gusset plates 3, whereupon on release of the compressive force the reflector snaps into place, resting on the recesses, to be firmly secured within the fixture housing. Re-
moval of the'reflector is effected by similar lateral compression and consequent passage of the reflector downwardly between the hooks of the recesses. While the gusset plates 3 serve as transverse peripheral frames for the reflector there is suflicient space between such frame and the reflector to permit the necessary movement of. the reflector on compression thereof during the insertion or detachment of thereflector. The
snap-action accompanying release of the lateral compressive force guarantees firm: positioningof the'ireflector, without any'possibility of, accidental disengagement from the fixture. Furthermore, installation and "removal can be effected easily and quickly and without interferen'ceby any fastening means or catches.
Apart from easy'installation andremoval; the reflector-will 'ofnecessity belocated at a specific level within 'the fixture housing, thus -making possible the design of a fixture with a predeter- .mined fixed relationship between the reflector andthe-light'sourceand other parts of the *fl'xture; a relationship which is thus invariable and independent of manual operation, 'asdistinguished from fi'xtures wherein the particular location of the reflector within theflxture'isdemined point. shape=asmore'specifically described in connec- -tion -with the illustrative drawings or it maybe, as'will beunderstood, of convex shape, as may "bedesired; in which-casethe' lateral recesses will 4 termined primarily by the uncontrolled and uncontrollable manual operation of such fastening .means asvertically operative screws, bolts and the like. In the case'of the fixture of the invention it is thus possible to provide a luminaire with a definite controlled optical train.
It will be observed that I have thus provided a simple and rugged lighting fixture with ready access to all parts thereof and possessing controlled optical features, wherein the reflector is held in osition byzits own spring action, independent of any fastening means, with the edge or edges of the reflector being seated within a plurality of lateral recesses adapted to limit lateral snapaction "movementof the reflector at a predeter- The reflector may be of concave b eadjusted in suitable manner to such reverse installation-of such reflector.
The inventi :1 while designed especially for recessed=ceiling or wall lighting fixtures is likewise" applicable to other luminaries involvingthe positioning of a curved reflector behind the light :sourceand held imposition by a plurality of re- 'cessed-supportsreceivingand seating the pe- -riphera1'edge or edges of the reflectorat a corresponding plurality of places, soarranged as to permit passage of the reflector therebetween on-compression thereof and holdingsuch. reflector infirm engagement on release of the compressive force.
What I claim is:
1. A lighting fixture, comprising a'fixture housing, a-sprin'gy-reflector within said housing, the top of-said-reflector beingspaced from said housing to provide space for electrical Wiring'a plurality of fixed supports within-said housing and encompassing said reflector to supportsaidhousing and" tolocksaid reflector in position, said supports being provided with recesses to receive andseat the outer edge of saidreflector and to serve asflxedabutments. against the outwardly directed spring' action of the reflector, the outer edge of said reflector being spaced from..the said housing to provide access thereto for removal of "said-reflector.
2. A-lighting'fixture,comprising a'flxture housingya springyreflector withinsaid housing, the
top of said reflector being spaced fromsaidhous ing'tdprovide space for electrical wiring, a plu- *'rality of "fixed" transverse frames supporting. said housing and'provided' with recesses to receive and seat the outer edge of saidlreflector and limit the outwardly directed spring action of the reflector, the outer edge of said reflector being "spaced from the said housing'to provide access thereto for removal of said reflector.
CITED The following references are of record in the file of this patent:
UNITED STATES PATIENTS Number Name Date 1,137,379 ,Beuttell Apr. 27, 1915 945,832. Strang Feb. 6., 1934 2,090,239 Strang Aug. 17, 1937 2;1671791 Wyatt Aug. 1, 1939 2,321,099 Naysmith' June"8, .1943
2,339,l'00' Netting Jan. 11, 1944;