Light-emitting diode (LED) floodlight

• US 8,911,116 B2
• Filed: 03/30/2012
• Issued: 12/16/2014
• Est. Priority Date: 04/01/2011
• Status: Active Grant

• Current Assignee: Eaton Intelligent Power Limited (Eaton Corporation PLC.)
• Original Assignee: Cooper Technologies Company (Eaton Corporation PLC.)
• Inventors: Blincoe, Patrick Stephen, Agnihotri, Kantesh Vittal, Lehman, Gregg, Kage, Rajendra
• Primary Examiner(s): Husar, Stephen F
• Application Number:
  US13/436,172
• Publication Number:
  US 20120250321A1
• Time in Patent Office: 991 Days
• Field of Search: 36224902-24906, 362/294, 362/311.02, 362/373, 362/800
• US Class Current: 362/294
• CPC Class Codes: F21S 8/003 Searchlights, i.e. outdoor lighting device producing powerful beam of parallel rays, e.g. for military or attraction purposes searchlights mounted on a vehicle B60Q1/245
• CPC Class Codes: F21V 21/00 Supporting, suspending, or attaching arrangements for lighting devices F21V17/00, F21V19/00 take precedence; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q, stands for supporting apparatus or articles in general F16M11/00; Hand grips
• CPC Class Codes: F21V 7/00 Reflectors for light sources characterised by cooling arrangements F21V29/505
• CPC Class Codes: F21V 7/09 with a combination of different curvatures
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A light emitting diode (LED) floodlight is described herein. The LED floodlight can include a LED housing assembly coupled to a driver assembly. The LED housing can include a number of LEDs mounted on a front side of a LED housing and a number of heat sink protrusions extending from a back side of the LED housing. The driver assembly can include a driver mounted within a driver housing, where the front side of the driver housing couples to the end of the heat sink protrusions that extend from the back side of the LED housing. The LEDs may be coupled to a number of reflectors. The reflectors can include a reflector body having a top portion and a bottom portion. The top portion can form a shape that is an elongated version of the shape formed by the bottom portion.

Claims

1. A light emitting diode (LED) floodlight, comprising:

a LED housing assembly comprising;

a plurality of LEDs mounted on a first front side of a LED housing; and

a first plurality of heat sink protrusions extending from a back side of the LED housing;

a driver assembly comprising a driver and a driver housing having a second front side, wherein the second front side is coupled to the first plurality of heat sink protrusions extending from the back side of the LED housing, and wherein the driver controls the plurality of LEDs in the LED housing; and

a plurality of air gaps positioned between the second front side of the driver housing, the back side of the LED housing, and the first plurality of heat sink protrusions.

2. The LED floodlight of claim 1, wherein the LED housing further comprises a plurality of reflectors comprising a bottom portion in a first plane and a top portion in a second plane, wherein the plurality of LEDs are positioned within the plurality of reflectors at the bottom portion, and wherein a first shape of the top portion is an elongated version of a second shape of the bottom portion.

3. The LED floodlight of claim 2, wherein the first shape of the top portion is an ellipse, and where in the second shape of the bottom portion is a circle.

4. The LED floodlight of claim 3, wherein the second shape is elongated in one dimension relative to the first shape.

5. The LED floodlight of claim 3, wherein the first plane and the second plane are parallel.

6. The LED floodlight of claim 2, wherein each of the plurality of reflectors comprises an identical reflector shape as a remainder of the plurality of reflectors.

7. The LED floodlight of claim 1, wherein the front side of the LED housing has a substantially similar shape as the back side of the LED housing.

8. The LED floodlight of claim 7, wherein the back side of the LED housing and the second front side of the driver housing comprise the substantially similar shape.

9. The LED floodlight of claim 8, wherein the back side of the LED housing and the second front side of the driver housing are circular.

10. The LED floodlight of claim 8, wherein the back side of the LED housing and the second front side of the driver housing are rectangular.

11. The LED floodlight of claim 1, further comprising a visor coupled to the front side of the LED housing.

12. The LED floodlight of claim 1, wherein the driver housing further comprises a second plurality of heat sink protrusions.

13. The LED floodlight of claim 1, wherein the driver housing further comprises a removable back cover.

14. The LED floodlight of claim 13, wherein the driver is accessible when the removable back cover is removed.

15. The LED floodlight of claim 1, further comprising a mounting bracket coupled to the driver housing, wherein the mounting bracket is coupled to the driver housing a hinge plate.

16. The LED floodlight of claim 14, wherein the driver is accessible when the driver housing remains coupled to the LED housing.

17. The LED floodlight of claim 12, wherein the second plurality of heat sink fins are disposed on at least one side of the driver housing.

18. The LED floodlight of claim 1, further comprising a mounting bracket coupled to the LED housing, wherein the mounting bracket is coupled to the LED housing a hinge plate.

19. The LED floodlight of claim 18, wherein the driver housing further comprises a removable back cover that can be removed when the mounting bracket is coupled to the LED housing.

20. The LED floodlight of claim 18, wherein the driver housing and the LED housing can have an adjustable position using the mounting bracket.