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Publication numberUS1654974 A
Publication typeGrant
Publication dateJan 3, 1928
Filing dateMar 17, 1927
Priority dateMar 17, 1927
Publication numberUS 1654974 A, US 1654974A, US-A-1654974, US1654974 A, US1654974A
InventorsCharles P Johnson
Original AssigneeCharles P Johnson
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Headlight diffuser
US 1654974 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

' Jan.,3,.192s. 1,654,974, C. P. JOHNSON HEADLIGHT DIFFUS ER Filed March 1 1927 gwumdoz I (If? 51250 Patented Jan. 3, 1928.

UNITED STATES CHARLES P. JOHNSON, 0F JOHNSONBURG, PENNSYLVANIA.

HEADLIGHT DIFFUSER.

Application filed March 17, 1927.

This invention relates to headlight diffusers and more particularly to a device adapted for attachment to the ordinary headlight structure, which will prevent the glare of direct rays from the headlight from confusing the drivers of oncoming vehicles.

An in'iportant object of the invention is to provide a device of this character which maybe readily and cheaply constructed and which is readily applied to the headlight.

A further object of the invention is to provide a device of this character which will permit the passage of non-confusing direct rays, so that an efficient lighting of the road is provided.

These and other objects I attain by the construction shown in the accompanying drawing, wherein for the purpose of illustration is shown a preferred embodiment of my invention and wherein Figure 1 is a front elevation of a headlight diffuser constructed in accordance with my invention;

Figure 2 is a vertical sectional view showing the diffuser in position in the headlight;

Figure 3 is a section on the line 33 of Fi ure 1.

eferring now more particularly to the drawings, the numeral 10 generally designates a flat metallic ring having an internal diameter of slightly greater size than the diameter of the illuminating bulb 11 of the headlight, with which it is to be employed. Radiating from this ring at circumferentially spaced points are a plurality of segments 12, which are preferably of the same size as the spaces therebetween. The outer end of each segment 12 has secured thereto a frusto-segmental enlargement 13, one radial edge 14 of which coincides with the corresponding edge of the associated segment 12. The segments 12 are similarly angularly deflected from the plane of the ring 11 and are similarly twisted, at 15, intermediate the ends thereof, so that the frustro-segmental enlargement 13 thereof each lie at an angle to a plane perpendicular to the axis of the ring 11. The deflection of the sections 12 causes the adjacent edges of the enlargements 13 to overlie one another, so that a complete circular obstruction to the passage of direct rays is provided, this obstruction being located substantially midway between the axis of the headlight and the inner perimetric wall of the deflector thereof. The outer Serial No. 176,119.

ends 16 of the enlargements 13 are all beveled from their higher toward their lower ends, so that these outer ends all lie in a common plane perpendicular to the axis of the ring 10. The outer extremity of the lower end of each enlargement 13 is secured to a ring 17, which is adapted to be positioned between the tlange F, with which the ends of the reflectors R are usually provided and the rear face of a lens L, which may consist of an. ordinary sheet of glass.

A diffuser of this construction will permit the passage of direct non-reflected rays from the bulb and will also permit an interrupted annular series of reflected rays to pass therethrough immediately about the bulb. At the perimeter of the reflector of the headlight, small openings 18 are formed by the cutting away of the enlargements 18, which will permit the passage of a small amount of reflector rays directly from the reflector. Opposite faces of the segments 12 and enlargements 13 are polished and accordingly rays impinging thereagainst will be reflected back and forth upon the faces thereof and will be considerably softened before their escape, so that they will not cause any tendency to glare.

It will be obvious that the construction employed may be modified to a certain extent and I accordingly do not limit myself to such specific structure except as hereinafter claimed.

I claim 1. A headlight ray diffuser comprising inner and outer co-aXial rings arranged in different planes, circumferentially spaced segments radiating from said inner end and frustro-segmental enlargements secured between the outer ends of said segments and the outer ring and having adjacent edges thereof overlapped.

2. A headlight ray diffuser comprising inher and outer co-aXial rings arranged in different planes, circumferentially spaced segments radiating from said inner end and frustro-segmental enlargen'ients secured between the outer ends of said segments and the outer ring and having adjacent edges thereof overlapped, the segments being sim ilarly twisted upon their longitudinal axes whereby adjacent faces of overlapped edges of the frustro-segmental enlargements are spaced from one another.

3. A headlight ray diffuser comprising life her and outer co-axial rings arranged in different planes, circumferentially spaced segments radiating from said inner end and frustro-segment-al enlargements secured between the outer ends of said segments and the outer ring and having adjacent edges thereof overlapped, the lower edges of the enlargements being secured to the outer ring, the outer ends of said enlargements being beveled from their upper to their lower edges whereby said outer ends are coplanar with said outer ring.

4. In combination with a headlight embodying the usual reflector, illuminating element and lens opposing the outer end of the reflector, a ring interposed between the outer edge of thereflector and the lens, a second ring surrounding the illuminating element and vanes connecting said rings embodying inner segmental portions, adjacent edges of which are spaced from one another and outer frustro-segmental enlargements adjacent edges of which overlap.

5. In combination with a headlight embodying the usual reflector, illuminating element and lens opposing the outer end of the reflector, a ring interposed between the outer edge of the reflector and the lens, a second ring surrounding the illuminating elementand vanes connecting said rings embodying inner segmental portions, adjacent edges of which are spaced from one another and outer frustro-segmental enlargements adjacent edges of which overlap, said vanes being twisted whereby the overlapped edges of the enlargements are spaced from one another. 7

In testimony whereof I hereunto afliX my signature.

CHARLES P. JOHNSON. I

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2702341 *Apr 13, 1951Feb 15, 1955Tradelius CarlLamp shade
US4142229 *May 23, 1977Feb 27, 1979Hulbert Jr Clarence EMethod of shaping a lamp beam
US6168295 *Feb 17, 1999Jan 2, 2001William A. HeinLight fixture having a plurality of light reflecting fins
US6508574Oct 23, 2000Jan 21, 2003Allied Lighting Systems, Inc.Light fixture
US7445363 *Sep 28, 2006Nov 4, 2008Lsi Industries, Inc.Self-standing reflector for a luminaire
US7452111 *Aug 18, 2006Nov 18, 2008Ecce Lux Inc.Variable focusing parabolic reflective lighting system
US8277086 *Mar 5, 2010Oct 2, 2012Alux Luxar Gmbh & Co. KgRound reflector for electromagnetic radiation
US20100246189 *Mar 5, 2010Sep 30, 2010Heitmann DietrichRound reflector for electromagnetic radiation
USRE39900 *Dec 20, 2002Oct 30, 2007Hein William ALight fixture having a plurality of light reflecting fins
WO2002035146A1 *Oct 23, 2000May 2, 2002Steven C DonnerLight fixture
Classifications
U.S. Classification362/292, 362/517, 362/510
International ClassificationF21V7/04
Cooperative ClassificationF21V7/04, F21W2101/02
European ClassificationF21V7/04