US1946465A

US1946465A - Lighting reflector

Info

Publication number: US1946465A
Application number: US615085A
Authority: US
Inventors: Arras George
Original assignee: Individual
Current assignee: Individual
Priority date: 1932-06-03
Filing date: 1932-06-03
Publication date: 1934-02-13
Anticipated expiration: 1951-02-13

Description

Feb. 13, 1 934.

G. ARRAS Y LIGHTING REFLECTOR Filed June 3, 1932 ZZZ/awn George Qrrcw:

Patented Feb. 13, 1934 STATES PATENT OFFEE Claims.

This invention relates in general to lighting reflectors and has more particular reference to a direct light reflector for electric lampsin which a small portion of the illumination is utilized for l indirect lighting.

One of the improved objects of the invention is in the provision of a lighting reflector, preferably polished, coated or enameled to have high reflecting emciency in which a portion of the 10 light rays are diverted behind the bowl or reflector for indirect lighting, the majority of the light rays being for direct lighting.

A further object of the invention is in the pro vision of a bent reflector shell for diverting a portion of the light rays to illuminate the rear side of the shell itself.

A further object of the invention is in the provision of a simple, inexpensive, clean and eflicient reflector for direct lighting in which a small portion of the illumination is diverted for indirect lighting or for lighting the space at the back of the reflector.

A still further object of the invention is in the provision of an enameled reflector in which a portion of the direct light is diverted and caused to shine upon the rear portion of the reflector itself, causing it to glow and giving off light as though it were semi-transparent.

Other objects of the invention will appear hereinafter, the preferred constructions being illustrated in the accompanying drawing.

In the drawing, Fig. 1 is a top View of a re-- flector embodying this invention;

Fig. 2 is a side elevation with parts shown in section, as taken on the line 22 of Fig. 1;

Fig. 3 is a top view; and

Fig. 4; a part sectional view taken on the line 4-4 of Fig. 3, showing a modification.

In many lighting reflector installations it is desirable to provide a dim illumination at the rear of the reflector shell as well as to project the majority of the light rays in another direction. This is sometimes accomplished by providing openings either plain or covered with glass through which a portion of the rays shine. In the present invention the light rays are deflected and diverted inwardly and upwardly by means of a number of bent louvers formed in the bowl or shell of the reflector and inclined to deflect the light from the interior of the reflector both rearwardly and inwardly thereof so that the dark or gloom at the back of the reflector is illuminated and when the reflector itself is provided with a highly reflecting coating such as enamel, either plain or colored, the deflected light rays will cause it to glow and shine, giving ofi considerable illumination and also presenting the appearance of a semi-transparent shell.

Referring now more particularly to the drawing, a reflector bowl or shell 6 is formed of thin sheet metal with an open or flaring deflecting mouth and with a projection '7 at the rear and usually at the center for housing a lamp socket and holder 8 which is secured in the end of the projection by a washer 9 and lock nut 10, or in any other suitable manner, a conduit pipe 11 usually supporting the fixture and through which conductors 12 extend for supplying current to a lamp 13 within the reflector.

These reflector shells usually have an outwardly flaring rim portion 14 connected to the projections '7 by a flatter Wall 15 which forms .an angular bend 16 extending around the shell.

In this bent angular portion 16 a number of louvers 1'7 are formed by

curved cuts

18 and 19 in the

walls

14 and 15 respectively, theportion between the cuts being bent at an angle to both adjacent walls and substantially parallel tothe axis of the lamp 13 except that in the forms shown in Figs. 1 and 2, the louvers because of the angular .80 bend 16 are dished inwardly. This forms a small deflector which comprises the louver 1'7 and openings on both sides of it through which the light rays may pass. Light rays from the lamp 13 strike the inside of the louvers 17 and are deflected upwardly and inwardly at the rear of the reflector shell, illuminating the space back of and surrounding the reflector and also highly illuminating the outer wall of the projection 7.

After the reflectors and the louvers therein are formed the entire shell may be coated with a reflecting medium such as enamel or the like, so that when the reflector is used with a lamp the deflected light rays shining upon the projection '7 cause it to glow and shine as if it were of semitransparent material, often resembling coated glass and giving off considerable light.

Instead of locating the louvers or deflectors in the angular bend 16 between the

reflector wall portions

14 and 15, deflectors 20 may be located in the flat reflector wall portion 15 as shown more clearly in Figs. 3 and 4. These deflectors being produced by

cuts

21 and 22 in the wall surface are somewhat flatter than the deflecting louvers 17 and may be inclined at a dilferent inclination to produce the indirect lighting effect of the projection 7 and the space at the back of the reflector. In both cases the formation of the deflecting

louvers

17 and 20 by cutting them out of the material of the reflector itself and bending 11c them at an angle to the wall or walls out of which they are cut prevent the direct rays of the lamp 13 from passing through the openings which form the deflectors and thus prevent any direct light spots at the rear or back of the reflector. The result of this is that there is a soft or defused glow at the rear of the reflector illuminating the proection 7 and the space around it and preventing or obviating a dark and gloomy appearance in a lighting insulation of this kind. The louvers are disposed at such angles that dust and dirt does not tend to collect at the openings and the reflector having no other parts in which dirt and dust is lodged, are easily kept clean. When the surface is enameled, the reflector is easily wiped or otherwise kept clean and constitutes an efficient lighting and reflecting unit.

I claim:

1. A lighting reflector having rearwardly opening reflecting louvers in the material of which the reflector is made for diverting a portion of the light backwardly from the reflector.

2. In a lighting fixture, a reflecting member having backwardly opening deflecting plates cut out of the material of the reflector and inclined at an angle to the wall from which they are cut for deflecting light rearwardly from the reflecting member.

3. A lighting fixture comprising a sheet metal reflector and means for intercepting a portion of the light from within the reflector to the rear thereof, said means comprising sheet metal louvers cut from, opening rearwardly, and bendable at an angle to the wall from which they are cut to divert light therethrough at the back of the reflector.

4. In a sheet metal reflector having an angular portion in its reflecting wall, the combination of curved cuts in the wall at a distance from the angular bend, together forming bendable louvers adapted to be inclined at an angle to the wall of the reflector.

5. In a reflector, a sheet metal bowl having curved cuts spaced apart in pairs and the material between the cuts being bendable about an axis at the ends of the cuts to form rearwardly opening deflecting louvers at an angle to the wall in which they are cut for diverting light through the reflector to the rear thereof.

6. In a lighting fixture, the combination with a reflector, of a lamp within the reflector for projecting light directed therefrom and rearwardly opening deflecting means formed in the reflector for diverting a portion of the light rays from the lamp to illuminate the space at the back of the reflector.

'7. In a lighting fixture, the combination with a reflector having a rear projection, of a lamp mounted in the projection and extending into'the reflector, and means including a plurality of louvers in the wall of the reflector for diverting a portion of the light rays from the lamp rear wardly of the reflector and illuminating the projection in which the lamp is mounted.

8. A reflector for lighting fixtures having a rim and a connected rear wall with an angular bend at their juncture and light deflecting louvers comprising slits adjacent the bend in the rim and wall portions forming a bendable louver which is dished inwardly due to the angular bend at the juncture of the walls.

9. In a lighting fixture, a reflector comprising slits arranged oppositely in pairs and together defining a louver bendable about a longitudinal axis between the slits to form a rearwardly opening deflecting louver which is inclined to the wall from which it is cut for deflecting light rearwardly through the reflector.

10. In a lighting fixture, the combination with a reflector having a supporting projection at its rear, an electric lamp mounted in the projection and extending into the reflector, and a plurality of louvers in the wall of the reflector comprising slits disposed opposite pairs to define a leaf of material bendable about an axis at right angles to the lamp and forming light openings on both sides of the leaf when it is inclined but so disposed that direct light is prevented from passing through the openings from the lamp.

GEORGE AREAS.