US 2724047 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
Nov. 15, 1955 E. F. ZURAWSKI FLUORESCENT LIGHT FIXTURE 3 Sheets-Sheet 1.
Filed Sept. 4, 1952 Nov. 15, 1955 E. F. ZURAWSKI 2,724,047
FLUORESCENT LIGHT FIXTURE Filed Sept. 4, 1952 :5 Sheets-Sheet 2 Nov. 15, 1955 E. F. ZURAWSKI 2,724,047
FLUORESCENT LIGHT FIXTURE Filed Sept- 4, 952 s Sheets-Sheet s United fltates Patent FLUOREflCENT LIGHT FIXTURE Edward F. Zurawski, Chicago, Ill., assignor to Garden City Plating 2 Manufacturing Co., a comoration of Illinois Application September 4, 1952, Serial No. 3ll7,763 7 Claims. (Cl. 240-l.11)
This invention relates to a fluorescent light fixture and has particular reference to means for simplifying the as sembly of the component parts thereof.
in accordance with the present invention a pair of lugs is struck out from each end plate, and a socket and the adjacent portion of the reflector are rigidly secured to each L pertin one end of the louver which may be snapped into place. The louver may be removed quickly and easily by pressing the ends of the leaf spring inwardly to disengage them from the apertures in the louver with which they are engaged.
The structure of the present invention by means of which the above and other advantages are attained will described in the following specification, taken in conction with the accompanying drawings, showing a preferred illustrative embodiment of the invention, in which:
Fig. l is a fragmentary perspective view of one end of a light fixture embodying the invention, with the fluorescent light tubes and the louver omitted to facilitate illustration of the structure;
Fig. 2 is a fragmentary perspective view of the louver;
Fig. 3 is a fragmentary perspective View of the plastic side plate;
Fig. 4 is a side elevational view of the fixture with the plastic side plates omitted;
Pig. 5 is a bottom elevational View of thefixture with plastic side plates omitted;
Fig. 6 is an exploded view of the structure shown in Fig. 1;
Fig. 7 is a transverse sectional view of the fixture shown in Fig. 1;
Fig. 8 is across sectional view, taken along the line 8-8 of Fig. 7;
Fig. 9 is a detail view, partly in elevation and partly in section, showing the socket secured to the fixture; and
Fig. 10 is an exploded view of the structure shown in Fig. 9.
In the drawings, the reference numeral 2 indicates an end plate having curved sides and having its upper edge recessed adjacent each side. The upper edge of the end plate is bent inwardly to form a flange 3 extending across the center portion thereof. The side portions of the upper edge of the end plate are each provided with a flange 4 which extends along the side and terminates at its lower edge in an upwardly curved portion 5. The upper poo tion of flange 4 extends horizontally from the upper portion of, the side in a planeparallel to but spaced below the plane of flange 3. The inner ends of flanges 4 terminate a short distance outwardly from the ends of flange .31. l The upper horizontal portion of, each flange 4 is providedwith an..apcrture 6. VA resilient arm 7, having one end rigidly secured to flange 4 as indicated at 8, has its other end bent at right angles to form a projection 9 which projects through aperture 6. The arm 7 is bent downwardly midway between the point Sat which it is secured to flange 4 and the projection 9 to space the portion of. the arm adjacent projection 9 from the under surface of flange 4. The projection 9 forms an abutment for holding the upper edge of a plastic side plate 10 in place.
The plastic side plate 19 is shaped to conform to the curvature of that portion of flange 4 between projection Q and the curved bottom edge 5, and is substantially the same length as the light fixture, so that when one end thereof fits against the flange 4 of one end plate 2 the other end will fit against the corresponding flange of the end plate at the opposite end of the fixture. The lower edge of side plate 10 is positioned in engagement with the curved bottom edge 5 of flange 4- with the upper portion of the side plate spaced from the flange. The side plate is then pressed outwardly. As the upper edge of the side plate 10 moves past resilient arm 7 the arm is pressed upwardly against the horizontal portion of flange 4, and when the upper edge of the side plate passes the projection 9 the resilience of the arm 7 moves the projection 9 back to its normal position, thereby forming an abutment against which the upper edge of the side plate is engaged to hold the side plate against accidental displacement. In order to remove the side plate 10 from the fixture the arm 7 is pushed upwardly against the horizontal portion of flange 4, and the side plate is pressed inwardly with its bottom edge adjacent curved bottom edge 5 of the flange. The curved bottom edge 5 acts as a fulcrum for the bottom edge of the side plate. When the upper edge of side plate 10 is moved past the arm 7 its lower edge may be lifted out of the curved portion 5 of the flange.
The center portion of end plate 2 has a pair of lugs 11 and 12 struck out at right angles therefrom. The lugs 11 and 12 are symmetrically disposed relative to a vertical center line through the end plate. .Each of the lugs 11 and 12 is provided with a comparatively large aperture 13 and with a small aperture 14 positioned adjacent the upper edge of the lug. The lugs 11 and 12 comprise the means for securing a reflector 15 and a plurality of sockets 16 in the fixture.
The reflector comprises a sheet of metal having a top Wall 17 and side walls 18 depending therefrom. The side walls 18 comprise a series of angular portions terminating in flanges 19 extending in planes parallel respectively to the planes of lugs 11 and 12. When the reflector 15 is assembled with the end plates 2 the opposite ends of its top wall 17 engage the under surface of flanges 3 and its lowermost flanges 19 are juxtaposed against the inner surfaces of lugs 11 and 12 at opposite ends of the fixture. The intermediate side wall portions 29, 21 and 22 of the reflector are symmetrical, and extend inwardly, downwardly, and then outwardly, to give some rigidity to the reflector. The ends of flange 19 are recessed, as indicated at 23, and are provided with an aperture 24 adjacent each recess.
Each socket 116 comprises a base portion 25 and a projecting portion 26. The portion 26 is provided with a recess 27 adapted to receive one end of a fluorescent tube 28 and providing suitable electrical contacts therefor. The base portion 25 is provided with a pair of recesses 29 and 30 to receive the ends of the wires which are connected to the contacts within recess 27. An other recess 31 extends entirely through base portion 25 and midway of its length is provided with a recess extending laterally from both sides thereof.
Each socket 16 is positioned adjacent one of the lugs 11 or 12 with its base portion towards the center of the end plate and its portion 26 projecting through aperture 13. The reflector is then positioned with flanges 19 adjacent lugs 11 and 12. The recesses 23 engage