US2126650A - Lighting device - Google Patents

Description

1938 c. C. MATERA 2,126,650

LIGHTING DEVICE Filed Sept. 9; 1955 Patented Aug. 9, 1938 UNITED "STATES 2,126,650 LIGHTING DEVICE Charles C. Matera, Hartford,Conn assignor to The 'Superlux Corporation, Hartford, Conn" a corporation of Connecticut 7 Application September 9, 1935, Serial No. 39,692

Claims.

My invention relates to that class of devices which are employed for the purpose of projecting and deflecting rays of light as well as for intensifying such rays, and an object of my in- 5 vention, among others, is to provide means for supporting a reflector frame from a lamp bulb in such manner as to convey a minimum amount of heat to said frame and for so directing the rays of light from a source, as a lamp, as to diffuse such rays evenly and avoid the presence of shadows.

One form of a device embodying my invention and in the construction and use of which the objects herein set out, as well as others, may be attained is illustrated in the accompanying drawing in which-- Figure 1 is a view in central section through my improved lighting device shown as applied to a lamp.

Figure 2 is a side view of the same partially broken away.

Figure 3 is a top view.

In the use of reflectors in connection with light sources, as electric lamps, for intensifying and projecting the rays of light from the lamp, reflectors have been employed which direct the rays from one surface of the reflector, the space on the opposite side of the reflector being dark as compared with the space on the reflecting side of the reflector. It is a purpose of my invention to so direct and intensify the light rays that these darkened areas shall be avoided and the spaces on all sides of the lamp and reflectors will be evenly lighted, thereby avoiding the presence of shadows.

One form of my improved device is illustrated in the drawing herein in which the numeral 5 denotes an electric lamp having a filament 6 for emitting rays of light. In carrying out my invention I provide a reflector unit which is attached to the lamp, this unit comprising a reflector supporting frame including loops I formed to fit the lamp for the support of the unit thereon. Bars 8 of any suitable number are secured to a ring 9 comprising a portion of and connecting the loops 1, said bars rising to a supporting ring ll], each of said bars having notches H formed therein for a purpose to be hereinafter described.

It will be noted that the entire frame is suptant feature of my invention. The loops 1 beported by the lamp bulb and that there is a ing composed of round wire, as shown in Fig. 1, a substantially line contact is created between the lamp bulb and theloops, and the bars 8 also being composed of round wire, as shown in Fig. 3, a line contact is made, and there is therefore only the line contact between the loops and the bulb and between the four bars at the opposite ends of each for the conduction of heat with a result that the frame is maintained in a substantially cool'condition.

A reflector I2 is secured to the frame as by means of a clamping ring [3 which is small enough to cause it to spring into the notches H in the lower ends of the bars, thereby clamping the inner edge of the reflector between said clamping ring and the ring 9, and as shown in Fig. 1 of the drawing.

This reflector may be of any suitable material, and of any desired form, this not.being material to my invention. As in the devices here- 0 inbefore referred to this reflector projects the rays angularly in different directions from the filament 6 to one side only of the reflector and this of itself would produce a shadow or darkened space on the opposite side of the structure.

To overcome this objection I provide an auxiliary reflector M which is mounted above the reflector l2, the terms above and below and up and down as used herein being employed with respect to the axis of the lamp 5 and these terms will therefore be understood to apply whether the axis of the lamp be disposed vertically or otherwise. It will also be understood that the term lamp as used herein is intended to denote and cover any source of light. This reflector I4 is so positioned that it will receive the rays of light from the filament 6 through the opening in the reflector l2 through which the lamp extends, the rays of light striking the under side of this reflector l4 and being projected downwardly.

A secondary reflector I5 is supported underneath the auxiliary reflector l4 upon the reflector supporting frame, and as shown in Figs. 2 and 3 of the drawing. This auxiliary reflector may be of various shapes to suit any particular purpose, as shown herein the shape on a radial line being slightly'curved. The rays of light will project from the filament 6 through the opening in the reflector l5 as well as through the opening in the reflector l2 hereinbefore described. Some of the rays striking the under side of the reflector M are projected downwardly upon the outer or upper-reflector surface of the reflector l5 and are thereby deflected in different directions upwardly so that the space around and above the reflector I4 is evenly illuminated.

The reflector I4 is of such shape that other rays of light from the filament 6 are projected backwardly through the openings in the reflectors l2 and I5 into the bowl of the lamp, thereby dispersing the dark space produced within the bowl of the lamp by reason of the opening through the reflector I2 which opening has no reflecting surface, the reflecting surface on the reflector l4 thus taking the place of the reflecting surface which has been omitted from the center of the reflector I 2.

It will thus be seen that I have so arranged the reflectors that the light rays are evenly diffused all about the space lighted by the lamp and that no shadows or darkened areas appear within such space.

In accordance with the provisions of the patent statutes I have described the principles of opera tion of my invention together with the device which I now consider to represent the best embodiment thereof; but I desire to have it understood that the device shown is only illustrative and that the invention may be carried out by other means and applied to uses other than those above set out.

I claim:

1. A lighting device including a lamp bulb, a reflector supporting frame formed for attachment to the lamp bulb below the socket and comprising loops encircling said bulb, a reflector having an opening through which said lamp bulb extends and shaped to direct rays of light in one general direction, a second reflector positioned to receive rays of light extending through the opening in the first mentioned reflector, and means for projecting said rays of light from the second reflector in a reverse direction.

2. A lighting device including a lamp bulb, a

reflector supporting frame formed for attachment to the lamp bulb below the socket and comprising loops encircling said bulb, a reflector having an opening through which said lamp bulb extends, a second reflector positioned to receive rays of light projected through the opening in the first mentioned reflector to reflect said rays downwardly, and a third reflector positioned to deflect the rays of light from the second reflector and project them in different directions up- Wardly.

3. A lighting device including a frame constructed for attachment to a lamp bulb and comprising upright bars to contact with a bulb only at their extremities and having notches, a ring sprung into said notches, and a plurality of reflectors each having a reflecting surface composed of a substance which is injuriously affected by the heat common to an electric lamp bulb, said reflectors having a common axis and being arranged one above another and one of which is held by said ring in contact with said reflector.

4. A lighting device including a frame with loops at one end to embrace a lamp, said frame also comprising bars having notches, a ring sprung into said notches, and a reflector held between said ring and said loops.

5. A lighting device including a frame constructed for attachment to a lamp bulb and comprising loops arranged to encircle said bulb on opposite sides and bars secured to and rising from said loops to contact with a lamp bulb for support of said frame, and reflectors supported by said frame, said reflectors each having a reflecting surface composed of a substance which is injuriously affected by the heat common to an electric lamp bulb, said reflectors having a common axis and being arranged one above another.

CHARLES C. MATERA.

Images