Патент USA US2107028код для вставки
Feb. 1, 1938. 2,107,028 |_. c. DOANE DIRECT LIGHTING FIXTURE Filed Feb. 6, 1936 45 ~ - INVENTOR ZERO)’ C‘. Don/vs BY _‘ ATTORNEY 2,107,028 Patented Feb. 1, 1938 PATENT OFFICE UNITED STATES 2,107,028 DIRECT LIGHTING FIXTURE Leroy 0. Duane, Meriden, Conn, assignor to The Miller Company, Meriden, Conn., a corporation oi’ Connecticut Application February 6, 1936, Serial No. 62,601 9 Claims. The present invention relates to direct light (Cl. 240-78) wardly extending straps or ribs l6, I1, I 8, all of ing ?xtures and more specially to direct lighting ?xtures employing two light sources. The present invention contemplates a lighting 5 ?xture adapted to use incandescent lamps and mercury vapor lamps, both burning in pendant which support a lower annular large diameter skirt portion IS. The holder is preferably in the form of a casting. , A central pendant lamp socket 20 is secured in the upper part of the holder and adapted to positions. be connected by wires indicated at 2| with a all these lamps is considerable, it has been mercury vapor lamp 22 whose electrodes are in As the‘ heat generated by the operation of 1 current source. This socket supports a pendant 10 found necessary to take special precautions to properly cool the lamp sockets and the upper part of the vapor lamp so as to secure proper operation for the vapor lamp. _ The present invention therefore provides a 16 holder for the lamp bulbs and sockets having suitable ventilation features whereby the heated air is dissipatedwithout causing an undesirable rise in temperature of the holder and parts car ried thereby. In effecting the control of the heated air ris 20 ing from the lamp bulbs, the present invention makes use of a ba?le apertured to receive the lamp bulbs and held in a holder in such a way as to permit the hot air to spill around the edges of the ba?ie and pass into the upper part of the GI 2 holder, this part being skeletonized so that the hot air readily escapes to the outside atmosphere. The accompanying drawing shows, for purposes of illustrating the present invention one of the 30 many embodiments in which the invention may take form, it being understood that the drawing is illustrative of the invention rather than limit ing the same. In the drawing: , ‘ Fig. 1 is a vertical sectional view of a direct lighting ?xture on the line l-—l of Figs. 2 and 3, with parts in elevation and parts broken away; Fig. 2 is a sectional view on the broken line 2-2 of Fig. l, with parts in elevation; 40 Fig. 3 is a section taken on the line 3—3 of Fig. 1 looking in the direction of the arrows; Fig. 4 is a perspective view of the holder and bulbs, the enclosure being omitted; and Fig. 5 is a fragmentary vertical section on the 45 line 5-5 of Fig. 3. r The ?xture shown herein is adapted to be supported in a pendant position by a pipe, con duit or other support H). The holder I I is. threaded onto this pipe and supports the ?xture. _ 50 The holder, as shown in the drawing, has a com paratively small upper annular portion l2 and a plurality of downwardly extending ribs or straps I3 secured to an intermediate ?at portion I4. This ?at portion is apertured as indicated at I5 55 in Fig. 2. The holder is provided with down dicated at 23 and 24. The ?at portion ll of 10 the holder supports three lamp sockets 25 which carry incandescent lamp bulbs indicated at 26. The incandescent lamp sockets 25 are con nected to wires 21 passing through an annular wireway, as indicated at the right of Fig. 1. These wires are held in place by narrow seg ments 28 secured to the lower face of the holder by screws 2_9. The ends of the segments are spaced, as indicated at 30, Fig. 2, to facilitate the wiring, and the ends of the segments are held in 20 place by the lamp sockets. The upper portion of the current supply wires for the incandescent lamps is indicated at 3|. They pass down through a channel-shaped rib 32 and are held in place by a cover indicated at 33., The ends of this cover are bent, as shown in the‘ drawing, and the cover is held in place by- the sockets. The vertical ribs l8 are made thick, as indi cated at the left of Fig. 1, while the ribs l6 and 30 I‘! are thinner. These thick ribs provide in wardly extending lugs 34 which are tapped to receive screws 35. These screws support a ba?le plate 36. The outer edge of this ba?ie plate is indicated at 31, and it will be apparent from 35 the drawing that the edge of the plate is spaced from the walls of the holder so as to form chan nels or vents for the escape of the heated air. The straps iii are apertured, as indicated atv 40, to receive the upper ends of hook members M. The lower ends of these hook members are indicated at 42, and they are adjustably secured in place by thumb screws indicated at 43. The peripheral ?ange on the ba?le plate 36 is notched to accommodate these screws. 45 The straps 4| form a convenient shade sup port for securing any form of enclosing shade about the bulbs. This shade may be merely an all-metal re?ector of any desired shape, or may be combined diffusing glass enclosing globe, as indicated at 45 and metal re?ector indicated at 46. Whatever form of enclosure is employed, it has a tendency to con?ne the heat generated by the lamps and to make it necessary to ventilate ‘ the holder. The heated air will pass up through 56 2 9,107,021; the peripheral 'vents about the baiiie plate, and owing to the large openings in the holder. this air will readily escape to the outside atmosphere. It will thus be apparent that there will be a minimum heating of the sockets, wires and ter-v facilitate the e of heated air up betweui the edge of the plate and the holder, the holder being provided with large ventilation apertures above the edge of the plate to facilitate escape of heated air from the ?xture, and a lamp en minals and of the upper part of the mercury - closing member supported from the holder. vapor‘ lamp. The lamp can be kept cool enough 4. In a direct lighting ?xture, a holder having to properly function. _ . ' an upper small diameter portion and a lower large It is obvious that the invention may be em diameter .portion, both portions being provided 10 bodied in many forms and constructions within with large ventilation openings to allow free ?ow 10 the scope of the claims, and I wish it to be under "of air, a central downwardly opening'socket in stood that the particular form shown is but one of the upper portion, a- plurality of downwardly the many forms. Various modi?cations and changes being possible, I do not otherwise limit 16 myself in any way with respect thereto. What is claimed is: _ opening sockets in the lower portion, a partition wall supported below the sockets and apertured for lamp bulbs carried in. the sockets, a mercury 15 , vapor lamp in the ?rst socket, incandescent lamps l. A direct lighting ?xture comprising a cen in the other sockets, the edge of the partition wall tral downwardly opening lamp socket, a pendant \being spaced from the holder to provide peripheral mercury vapor lamp carried therein, a plurality air vents. of downwardly opening lamp sockets circumfer 5. In a lighting ?xture, a socket holder having entially disposed below the central socket, in upper, intermediate and lower annular portions candescent lamps in the latter mentioned sockets, interconnected by spacing libs which provide lat a common support for all the ‘sockets, said sup erally opening ventilation openings, a central port being in the form of a skeletonized holder socket secured to the upper portion, a plurality to provide ventilation about the sockets, a lamp of sockets secured to the intermediate portion, enclosing member carried by the holder and dis an apertured plate secured to the lower portion posed about the lamps to cause air heated there with its edges spaced therefrom to provide pe by to pass upwardly through the member and the ripheral air vents, and socket supported lamps holder, and a baille plate mounted below the projecting through the apertures in the plate. sockets and apertured to receive the upper por tion of the lamps and having its edge spaced from the holder to provide a peripheral ventilation space whereby the heated air within the mem ber is diverted from the upper end of the vapor lamp and its supporting socket, andpasses out through the holes of the skeletonized holder. 2. In a direct lighting ?xture, a downwardly opening central socket, a plurality of downwardly opening sockets spaced circumferentially outside and below the central socket, an annular down wardly opening socket holder to which all the sockets are secured, the holder being skeletonized to afford free escape of heated air and having a_ skirt about its lower edge, lamp'bulbs in the sockets, a partition wall across the holder below _ 6. A lighting ?xture such as claimed in claim 5. 30 wherein the intermediate portion of the holder is ?at and provided with ventilation apertures. 7. A lighting ?xture such as claimed in claim 5, wherein the holder has an annular wire receiving channel for the lower sockets and a cover for 35 said channel. > v 8. In a’pendant lighting ?xture, a holder hav ing an annular shade receiving skirt, internally disposed lugs spaced above the lower edge of the skirt, an annular baffle plate ?tting the lugs and spaced from the holder walls to a?ord' vents, means to secure the bai?e plate in place, shade supports carried by the holder, sockets above the plate, and bulbs in the sockets projecting through apertures in .the plate, the holder being skele, the sockets and above the skirt, the wall being tonized above the plate to prevent hot air accu apertured to receive the upper portions of the lamp bulbs and of smaller diameter than the holder to facilitate escape of air upwardly be tween the edge of the wall and the holders, and a lamp enclosing member secured to the skirtof mulating about the sockets. the holder. . . ' ' - 9. In a lighting ?xture, a downwardly opening‘ stepped, bell shaped holder having an upper small diameter portion, a central socket carried there 60 by, an intermediate, ?at portion connected to the upper portion by ribs and provided with an an 3. In a direct lighting ?xture,-a pendant ‘mer cury vapor lamp, a supporting socket, a socket holder, a horizontal plate apertured to receive the vapor lamp and disposed above the upper electrode of the vapor lamp, a plurality of cir nular wireway-forming groove, circumferentially cumferentially disposed‘ lamp sockets carried by mentioned wireway, wiring for the central socket, and independent wiring disposed in said groom and connected to the circumferentially disposed the holder below the ?rst socket and above the plate, incandescent lamps therein, the necks of these lamps passing through apertures in the plate, the peripheral edge of the plate being spaced from the lower portion of the holder to ‘ disposed sockets carried by said intermediate por tion, a sectional cover plate for the groove, one 56 of the ribs being grooved to form a wireway lead ing to the ?rst groove, a cover plate for the last sockets. ‘ LEROY C. DOANE.