US2544581A

US2544581A - Indirect lighting fixture

Info

Publication number: US2544581A
Application number: US83815A
Authority: US
Inventors: Bodian Marcus
Original assignee: Sunbeam Lighting Co
Current assignee: Sunbeam Lighting Co
Priority date: 1949-03-28
Filing date: 1949-03-28
Publication date: 1951-03-06
Anticipated expiration: 1968-03-06

Description

March 6, 1951 M. BODIAN INDIRECT LIGHTING FIXTURE 2 Sheets-Sheet 1 Filed March 28, 1949 FIG.

INVENTOR MARCUS BODIAN ATTORNEY March 6, 1951 M. BODIAN 2,544,581

INDIRECT LIGHTING'FIXTURE Filed March 28, 1949 I 2 Sheets-Sheet 2 INVENTOR mcus BODMN ATTORNEY Patentecl Mar. 6, I951 UNITED; STATES PATENT OFFICE INDIRECT LIGHTING FIXTURE Marcus Bodian, Los Angeles, Calif., assignor to Sunbeam Lighting Company, Los Angeles, Calif a partnership Application March 28, 1949, Serial No. 83,815

6 Claims (01. 240-78) 1 This invention relates to an indirect lighting fixture and in particular to a fixture for use with a reflector type high brightness lamp.

One object of my invention is to provide an inexpensive lighting fixture utilizing a reflector type high brightness lamp. Another object is to provide an indirect lighting fixture utilizing a reflector type high brightness lamp which is free from bright surfaces when viewed from the floor area illuminated by said light. Another object is to provide an indirect lighting fixture utilizing a reflector type high brightness lamp which permits the removal and insertion of the lamp without disassembly of the fixture. A further object is to provide. an indirect lighting fixture which presents. to the observer below the fixture no surfaces whose brightness is greater than the reflected light from the ceiling. A still further object is to provide a lighting fixture for indirect lighting which is rugged, free from glass or other shatterablc elements, and whose surfaces may be readily cleaned or refinished.

These and other objects are attained bymy invention which will be understood from the following description, reference being made to the accompanying drawing which forms a part here.- of, in which Figure 1 is an elevational view partly in section taken on the line l--l of Figure 2;

Figure 2 is a top plan view of. my fixture;

Figure 3 is an elevational view partly in section taken on the line 3-3 of Figure 4, showing a modified form of my invention; and

Figure 4 is a top plan view of the modification shown in Figure 3.

Referring to the drawings, the preferred form of my invention is shown in Figures 1 and 2. The fixture is intended for association with a socket ll supported from the ceiling C in the conventional manner by the use of various fittings attached to an outlet box, the details of which are not shown. A cylindrical cover 12 .hides the details of the socket and its attachment to the outlet box, etc., the cover being firmly attached at the ceiling by a canopy I3. The re- Coaxial vertically disposed cylindrical shields ll, 2|, and 26, preferably made of material such as sheet aluminum, are provided around the lower half of the lamp, and lower and upper inverted conical reflectors are provided to further diffuse the light from the lamp, as will be now described in detail. The inner cylindrical shield I! is preferably long enough to extend above the boundary line l5 defining the upper limit of the reflector surface, and to extend below the position approximately levelwith or slightly below the lowermost tip of the lamp bulb. The inner shield l'! is provided with an inverted conical reflector l8 which extends from the upper rim E9 of the shield 11, the lower opening of the reflector being large enough to admit the lamp therethrough. The inner shield I! is supported from the cover l2 by the rods I4 spaced around its circumference, said rods being conveniently provided at their ends with hooks [6 which engage holes in the lower end of the cover and in the upper rim l 9 of the. inner shield I 7. Three rods Mare shown in the illustrative embodiment but any suitable number for the proper support of the shields may be used. A coaxial intermediate shield 2] is provided outside of said inner cylindrical shield, the length of this intermediate. shield 2| being less than the length of the shield IT and the top edge 22 being disposed below the upper rim I9 of the inner cylindrical shield H. The lower edge 23 of the intermediary shield 2| is preferably slightly above the lower rim 2,0 of the inner shield IT. The intermediate shield, H is conveniently supported from the inner shield I! by bracket bars 24 which are spot.-

' welded at their two ends respectively to the outmaining portions of the fixture are supported to the brightest part of the lighting element. or

filament in the lamp...

side surface of the inner shield H and the inside surface of the intermediate shield 2i. An outer cylindrical shield 26 is also provided, this being disposed coaxially with the other shields. ii and 2!, and being spaced from the intermediary shield 2| by a distance approximately equal to the distance from the inner cylindrical shield ll to the intermediate ring 2|. The top edge 2'l of the outer shield 26 is arranged at the same level as the upper rim I9 of the inner cylindrical shield and the lower edge of the outer shield is above the lower edge 23 of the intermediary shield. The length of the. outer shield 26 is approximately the same as the intermediary shield 25. The outer shield 26 is conveniently supported from the intermediate shield 21 by bracket bars 29 which are spot-welded at their ends respectively to the, outer surface of the shield 2i and to the inner surface of the outer shield 26. An upper inverted conical reflector 31' is also provided in the space between the upper rim I 9 of the inner shield I1 and the lower edge of the socket cover I2, this reflector 3| being conveniently supported on the suspending rods I4, slots 32 for each rod l4 extending from the lower edge of the reflector so that it is rigidly held in place on said rods.

The modified form of my invention, shown in Figures 3 and 4, consists in general of a similar arrangement of the socket II, the socket cover l2, the canopy l3 and the suspending rods l4 holding the inner cylindrical shield I! with its attached lower conical reflector l8 and the upper conical reflector 3! as previously described for the preferred form shown in Figures 1 and 2. The intermediate shield 2| is eliminated in this modification, and the outer shield 26 is supported upon radial vanes 34 which are disposed between the inner and outer shields l1 and 26 extending from the upper to the lower edges of both shields. The vanes 34 are spaced apart in the annular space between the inner and outer rings, six being shown. The vanes cut off any direct view of the bright surface of the lamp or other surfaces to an observer located in the floor area illuminated by the lamp. This alternative form of my lighting fixture is particularly adapted for the smaller sizes utilizing lower voltage lamps.

My fixture is especially adapted for lamps having large bulbs of which a portion at the end away from the socket connection may be silvered or otherwise made of light reflecting quality.

Such lamps using incandescent filaments are in common use now, but any high brightness electrical light source may be used within a globular bulb.

The advantages of my indirect lighting fixture will be apparent. The construction is simple and inexpensive. The lamp may be replaced Without disturbing or dismantling the fixture in any way. The lamps may be changed by means of a lamp changer on a long pole without requiring the use of ladders or other equipment. The light is evenly diffused and no excessive or eye-hurting bright spots are visible to persons in the vicinity either directly below or at the side of the fixture. The portions of the fixture near the lamp do not overheat, being cooled by the draft of air induced by the heating passing through the shields and reflectors.

I claim:

1. An indirect lighting fixture utilizing ceiling reflection and adapted for use with a bulbous reflector type high intensity lamp comprising a plurality of vertically disposed cylindrical shields arranged coaxially, including an inner shield disposed around and at a distance from the light source, the length of said inner shield being greater than the length of any other shield and its lower edge being below the lower edge of any other shield, and an outer shield having its top edge level with the top edge of said inner shield; bracket means attached to said inner shield for supporting said outer shield; a lower inverted cone reflector depending from the upper edge of said inner shield and substantially covering the central opening of said inner shield, said reflector having an axial aperture to admit a reflector type bulbous lamp; an upper inverted cone reflector disposed above the upper edge of said inner shield; means to support said upper shield; intermediate shielding means disposed between said inner and said outer shield; and means to suspend said fixture from the ceiling.

2. An indirect lighting fixture utilizing ceiling 4. reflection and adapted for use with a bulbous reflector type high intensity lamp comprising a .socket cover afiixed to an overhead support; a

plurality of vertically disposed shields arranged to coaxially surround said lamp, the inner shield being suspended below said socket cover, the length of said inner shield being greater than the length of any other shield and its lower edge being below the lower edge of any other shield, and an outer shield having its top edge level with the top edge of said inner shield; bracket means attached to said inner shield for supporting said outer shield; a lower inverted cone reflector depending from the upper edge of said inner shield and substantially covering the central opening of said inner shield, said reflector having an axial aperture to admit a bulbous reflector type lamp; an upper inverted cone reflector disposed above th upper edge of said inner shield; means to support said upper shield; and an intermediate coaxial cylindrical shielding disposed between said inner and said outer shields, the upper edge of said intermediate shield being lower than the upper edges of said inner and said outer shields. 3. An indirect lighting fixture utilizing ceiling reflect.on and adapted for use with a bulbous reflector type high intensity lamp comprising a socket cover affixed to an overhead support; a plurality of vertically disposed shields arranged to coaxially surround said lamp, the inner shield being suspended below said socket cover, the length of said inner shield being greater than the length of any other shield and it lower edge being below the lower edge of any other shield, and the outer shield having its top edge level with the top edge of said inner shield; rod suspending means for suspending said inner shield from said socket cover; bracket means attached to said inner shield for supporting said outer shield; a lower inverted cone reflector depending from the upper edge of said inner shield and substantially covering the central opening of said inner shield, said reflector having an axial aperture to admit a bulbous reflector type lamp; an upper inverted cone reflector disposed above the upper edge of said inner shield, said reflector being provided with slots arranged to engage said rod suspending means; and an intermediate coaxial cylindrical shield disposed between said inner and said outer shields, the upper edge of said intermediate shield being lower than the upper edges of said inner and said outer shields. 4. An indirect lighting fixture utilizing ceiling reflection and adapted for use with a bulbous reflector type incandescent lamp comprising a socket cover aflixed to an overhead support; a plurality of vertically disposed shields arranged to coaxially surround said lamp, the inner shield being suspended below said socket cover, the length of said inner shield being greater than the length of any other shield and its lower edge being below the lower edge of any other shield, and an outer shield having its top edge level with the top edge of said inner shield; bracket means attached to said inner shield for supporting said outer shield; a lower inverted cone reflector depending from the upper edge of said inner shield and substantially covering the central opening of said inner shield, said reflector having an axial aperture to admit a bulbous reflector type lamp; an upper inverted cone reflector disposed above the upper edge of said inner shield; means to support said upper shield; and vertically disposed thin sheet shields disposed radially between said inner and said outer cylindrical shields.

5. An indirect lighting fixture utilizing ceiling reflection and adapted for use with a bulbous reflector type lamp comprising a pair of vertically disposed cylindrical shields arranged to coaxially surround said lamp, including the inner shield disposed around and at a distance from the light source, the length of said inner shield being greater than the length of any other shield and its lower edge being below the lower edge of any other shield, and an outer shield having its top edge level with are top edge of said inner shield; bracket means attached to said inner shield for supporting said outer shield; a lower inverted cone reflector depending from the upper edge of said inner shield and substantially covering the central opening of said inner shield, said reflector having an axial aperture to admit a reflector type bulbous lamp; an upper inverted cone reflector disposed above the upper edge of said inner shield; means to support said upper shield; vertically disposed thin sheet shields disposed radially between said inner and said outer cylindrical shields, and means to suspend said fixture from the ceiling.

6. An indirect lighting fixture utilizing ceiling reflection and adapted for use with a bulbous reflector type high intensity lamp comprising a socket cover aflixed to an overhead support; a plurality of vertically disposed shields arranged to coaxially surround said lamp, the inner shield being suspended below said socket cover, the length of said inner shield being greater than the length of any other shield and its lower edge being below the lower edge of any other shield.

6 and the outer shield having its top edgelevel with the top edge of said inner shield; rod suspending means for suspending said inner shield from said socket cover; bracket means attached to said hield for supporting said outer shield; a lower nverted cone reflector depending from the upper edge of said inner shield and substantially covering the central opening of said inner shield, saidre'flector having an axial aperture to admit a bulbous reflector type lamp; an upper inverted cone reflector disposed above the upper edge of said'dnner shield, said reflector being provided wit ots arranged to engage said rod suspending means; an intermediate coaxial cylindrical shi ddisposed between said inner and said outer shi' ds, the upper edge of said intermediate shield bei ower than the upper edges of said inner and id outer shields; and vertically disposed thin'fsheet shields disposed radially between said inner and said outer cylindrical shields.

: v MARCUSBODIAN.

REFERENCES CITED UNITED STATES PATENTS