LIGHTING DEVICE WITH THROW FORWARD REFLECTOR

• US 20110235317A1
• Filed: 03/26/2010
• Published: 09/29/2011
• Est. Priority Date: 03/26/2010
• Status: Abandoned Application

• Current Assignee: Orion Energy Systems, Inc.
• Original Assignee: Orion Energy Systems, Inc.
• Inventors: Verfuerth, Neal R., Wetenkamp, Kenneth J.
• Application Number:
  US12/748,318
• Publication Number:
  US 20110235317A1
• Time in Patent Office: Days
• US Class Current: 362/217.05
• CPC Class Codes: F21V 7/005 with an elongated shape to cooperate with linear light sources
• CPC Class Codes: F21V 7/09 with a combination of different curvatures
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21W 2131/105 of arenas or the like
• CPC Class Codes: F21W 2131/107 of the exterior of buildings
• CPC Class Codes: F21Y 2103/00 Elongate light sources, e.g. fluorescent tubes
• CPC Class Codes: F21Y 2113/00 Combination of light sources

Abstract

A lighting device with a throw forward reflector includes a body, at least one light source coupled to the body, and a reflector with an asymmetric cross sectional geometry coupled to the body and at least partially about the light source to project light from the light source at an angle that is non-perpendicular to a plane of the body. A throw forward reflector includes an elongated reflector body formed from a sheet of material and has an asymmetric cross sectional profile, the profile comprising a compound radius having a first curved segment defined by a first radius and a second curved segment defined by a second radius that is greater than the first radius, and a crease extending at least partially along the length of the reflector body and defining an interface between the first curved segment and the second curved segment.

Claims

1. A lighting device with a throw forward reflector, comprising:

a lighting device body;

at least one light source coupled to the lighting device body;

an elongated reflector having an asymmetric cross sectional geometry coupled to the lighting device body and disposed at least partially about the light source to project light from the light source at an angle that is non-perpendicular to a plane of the lighting device body.

2. The device of claim 1 wherein the light source comprises an elongated fluorescent light bulb.

3. The device of claim 2 wherein the asymmetric cross sectional geometry comprises a single sheet of material formed with a compound radius.

4. The device of claim 3 wherein the compound radius comprises a first curved segment having a first radius and a second curved segment having a second radius that is greater than the first radius.

5. The device of claim 4 wherein the first curved segment and the second curved segment are separated by a crease formed therebetween that extends at least partially along the length of the reflector.

6. The device of claim 4 wherein the first radius is within the range of approximately 0.937-1.137 inches, and the second radius is within the range of approximately 4.304-4.504 inches.

7. The device of claim 6 wherein the first radius is within the range of approximately 0.987-1.087 inches and the second radius is within the range of approximately 4.354-4.454 inches.

8. The device of claim 7 wherein the first radius is approximately 1.037 inches and the second radius is approximately 4.404 inches.

9. The device of claim 4 wherein the reflector comprises a textured reflective surface.

10. The device of claim 4 wherein the reflector comprises a reflective coating applied to a base material.

11. The device of claim 4 further comprising a first flange extending from the first curved section and a second flange extending from the second curved section, wherein the first flange and the second flange are substantially coplanar with one another.

12. The device of claim 11 wherein the at least one light source comprises a plurality of light sources and the elongated reflector comprises a plurality individual reflectors, and wherein the first flange of one of the individual reflectors overlaps the second flange of another of the individual reflectors.

13. The device of claim 1 wherein the at least one light source comprises a plurality of elongated fluorescent bulbs, and the elongated reflector comprises a single reflector body having a plurality of asymmetric geometries for reflecting light from the plurality of light sources in a throw forward manner.

14. A throw forward reflector, comprising:

an elongated reflector body formed from a sheet of material and having an asymmetric cross sectional profile, the profile comprising a compound radius having a first curved segment defined by a first radius and a second curved segment defined by a second radius that is greater than the first radius, and a crease extending at least partially along the length of the reflector body and defining an interface between the first curved segment and the second curved segment.

15. The reflector of claim 14 wherein the sheet of material comprises a textured reflective surface.

16. The reflector of claim 14 wherein the reflector body further comprises a reflective coating applied to the sheet of material.

17. The reflector of claim 14 further comprising a first flange extending from the first curved section and a second flange extending from the second curved section, wherein the first flange and the second flange are substantially coplanar with one another.

18. The reflector of claim 14 wherein the reflector body comprises a single sheet of material having a plurality of substantially identical asymmetric geometries configured to reflect light from a plurality of light sources.