US1830263A - Inclosed lighting unit - Google Patents

Description

NOV. 3, 1931. c, DQANE 1,830,263

INCLOSED LIGHTING UNIT Filed Dec. 3, 1925 glVENTOR [erg .2007:

BY 2 ATTORNEY Patented Nov. 3, 1931 UNITED STATES PATENT oFncE 7 LEROY C. DOANE, OI MERIDEN, CONNECTICUT, ASSIGNOB TO THE KILLER OI MERIDEN, CONNECTICUT, A CORPORATION 01 CONNECTICUT nwcnosnn Home um Application fled December a, 1925. Serial in. 72,890.

The resent invention relates to an inclosed hghting, unit, and is more particularly directed toward a unit which may function as a semi-indirect lighting unit, or as a direct lighting unit. a

The present invention contem lates an inclosed lighting unit, having a g ass to and a glass bottom, and which is provide with w an interiorly arranged reflector adapted to reflect most of the light upwardly or downwardly, as desired, and at the same time permit a small amount of light to reach the opposite side of the unit. In this manner one is enabled to provide a soft illumination in a difl'using bowl under the reflector, when the reflector is directin the most of the light from the lower half of the lamp toward the ceiling, thereby providing an indirect lightin fixture which is illuminated on its under si c. It is also possible to illuminate the ceiling sufficiently to avoid shadows, when the reflector returns most of the light from the upper half of the lamp downward to increase the intensity of light in the bowl.

Another object of the invention is to so arrange the reflector and inclosing unit that the reflector is concealed and invisible from outside the unit even when it is illuminated.

A further object of the invention is to provide a reversible. reflector that the unit may be converted at will.

The accompanying drawings show, for

urpcses of illustration, one of the many emodiments in which the present invention may take form, it being understood that the drawings are illustrative of the invention,

which may be embodied in various forms.

In these drawings:

Figure 1 is a side elevational view with parts in section showing the reflector below thelamp bulb in full lines and showing it inverted in dot and dash lines' Figure 2 is an enlarged sectional view showing a detail of the construction; and

Figure 3 is an elevational view of a. removable disc placed in the center of the reflector.

The lighting unit is provided with a suitable supporting stem, or the like, 10, which carries any desired form of socket cover and wardly and inwardly,

wardly so that the outside diameter is comparatively large. Its outer edge 15 is car-f ried inside of a split channel member 16, somewhat deeper than the thickness of the glass, as illustrated more clearly in Figure 2. This channel'is split, as shown at 17 in Figure 1, so that it may be readily placed around the outer edge of the cover plate 14.

It is not necessary to attach it to the lass.

A lower diffusing bowl 18 of suita 1e out late as here shown, extends downwardly an outline and design is, as here shown, mounted in a metal band 19. The lower end of this band has a channel, as shown at 20 to cooperate with he upper lip 21 of the 'flusin bowl 18. This metal part is reenforced at its up-;

per end by a ring 22, as indicated in Figure 2. A flat ring 23 is removably fastened to the top of the band 19 by screw 24. This I ring projects inwardly, as indicated at 25,

so as to rest on top of the upper side of the channel 16 and supports the band 19 and diffusing bowl.

The reflecting member above referred to is here shown in the form of dished sheet metal stamping 26, the central art of which is concaved downwardly as in 'cated. This stamping is provided with a peripheral flange 27, which is adapted to rest on the upper side of the channel 21 of the band 19, so as to carry the reflector in groper position. The reflector is provided wit a downwardly reflecting surface 28 which extends from the flange 27 upas indicated in the drawings. The stamping is then bent downwardly and is provided with a number of windows 29, separated by narrow ribs 30. These ribs serve to support the central dished part of the reflector. These windows and the outer reflecting surface are so placed that some of the light coming from the lamp will pass through the windows and reach the reflecting surface 28 and be reflected downwardly into the difl'using bowl, as indicated by the ray of light marked ell-a. In this inc manner a small quantity of light will be permitted to reach the diffusing bowl which will glow with a dull light. The light which reaches the central part of the reflector 26 will be reflected upwardly, as indicated by the ray 6-4), and will pass out through the transparent plate 14 so as to illuminate the ceiling. Of course, the light falling directly on the cover plate 14 will pass through unobstructed as indicated at c. It will thus be seen that, when the reflector is in this position, most of the light will be sent upwardly and that the unit will function as a semi-indirect lighting unit. At the same time a small quantit of h ht will be permitted to enter the di using owl and become scattered so that the bowl will not be dark from underneath.

The reflector 26 has a centrally arranged hole 31, somewhat larger than the neck of the lamp, and a removable disc 32 is held in place to close the hole by a plurality of prongs 33 resting on the reflector 26.

To convert the lamp from one in which most of the illumination is directed upwardly to one in which most of the light is directed downwardly, one removes the central disc 32 from the reflecting member, and places this member in a dot-and-dash line osition of Figure 1. The flange 27 of the re ector is I place next to the outer ed e 15 of the glass cover plate 14, and the spit channel 16 is placed around these members so as to hold them together. A small amount of light willthen pass through the windows 29 so as to reach the reflecting surface 28, as. before. This light will be directed upwardly, as indicated by the rays a and c and dot-anddash lines. Most of the light, however, will be reflected downwardly by the central part of the reflector, as shown by the ray marked dd so as to illuminate the diffusing bowl 18. The unit will then act as a direct lighting unit, the ceiling being lighted to avoid shadows.

The opaque metal band 19 which surrounds the central part of the unit will effectively hide and conceal the reflector sothat it will not be visible when looking at the li hted unit from the side. At all times the re ector will be invisible to the eye from underneath the lamp because of the diffusing nature of the glass. No shadows will appear on this glass when the unit is illuminated.

It is obvious that the invention may be embodied in many formsand constructions within the scope of the claims and I wish it to be understood that the particular form shown and described is but one of the many forms. Various modifications and changes being possible, I do not otherwise in any way limit myself with respect thereto.

I claim: 7

1. An inclosed lighting unit having a lower light-diffusing bowl, an upper glass cover,

teaches an inclosed electric lamp, and a reversible metal reflector carried between the bowl and inclosed electric lamp, and a reversible metal reflector carried between the bowl and cover, said reflector when in one position having its reflecting surface below the lamp adapted to reflect light upwardly through the cover, and when in the other position having its reflecting surface above the lamp and adapted to reflect light downwardly to illuminate the bowl, said reflector having windows permitting a portion of the light to pass through the reflector and having a second reflecting surface to reflect the light passing through said windows and redirect it in the other direction.

' 3. The combination with an electric lamp and a glass inclosing unit having a diffusing lower part, of a reflector carried inside the glass unit and capable of being positioned to riphery of the glass plate, a light-diffusing glass bowl supported from the skirt, the bowl, cover. plate, and skirt enclosing the lamp, and a reflector carried between the glass parts, said reflector being shaped to reflect the most of the light toward one of the glass parts and to permit a small amount. of light to reach the other glass part.

5. An inclosed lighting unit comprising, a downwardly opening lamp -socket, a lam in the lamp socket, a support for the lamp soc et,

a socket cover, a translucent glass cover plate supported from the socket cover, a sheet metal skirt supported from the periphery of the glass plate, a light-diffusing glass bowl supported from the ,skirt, the bowl, cover late, and skirt inclosing the lamp, and a re ector ca rried between the glass parts, said reflector being capable of being inverted and being so shaped that, in either position, most of the light is'reflected in one direction and a small amount of light is permitted to reach the glass part on the opposite side of the unit.

fleeting band outside the windows to receive light transmittin through the windows and v scattez it inside t e difiusing bowl.

Signed at Meriden in the county of New 5 Haven and State of donnecticut, this 28 day of Nov.,- 1925.

LEROY DOANE.

Images