Assembly of light emitting diodes for lighting applications

• US 8,025,428 B2
• Filed: 12/06/2005
• Issued: 09/27/2011
• Est. Priority Date: 12/07/2004
• Status: Expired due to Fees

• Current Assignee: Elumen Lighting Networks Inc.
• Original Assignee: Elumen Lighting Networks Inc.
• Inventors: de Varennes, Christian, Duguay, Louis, Chaffai, Rachid
• Primary Examiner(s): Ward; John A
• Application Number:
  US11/792,546
• Publication Number:
  US 20080212329A1
• Time in Patent Office: 2,121 Days
• Field of Search: 362/310, 362/311.02, 362/249.01, 362/249.02, 362/249.07, 362/153.1, 362/249.11, 362/544, 362/545, 362/548, 362/646
• US Class Current: 362/311.02
• CPC Class Codes: F21K 9/00 Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
• CPC Class Codes: F21S 2/005 of modular construction
• CPC Class Codes: F21S 8/086 with lighting device attached sideways of the standard, e.g. for roads and highways
• CPC Class Codes: F21V 14/02 by movement of light sources in vehicle head lamps F21S41/657
• CPC Class Codes: F21V 19/001 the light sources being semiconductors devices, e.g. LEDs
• CPC Class Codes: F21V 19/02 with provision for adjustment, e.g. for focusing
• CPC Class Codes: F21V 21/30 Pivoted housings or frames
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2107/40 on the sides of polyhedrons, e.g. cubes or pyramids
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

An assembly of light emitting diodes for a streetlight or the likes comprises a first board having a first matrix of light emitting diodes (LEDs) mounted thereon defining a first light projection plane and at least another board having a second matrix of LEDs mounted thereon defining a second light projection plane. The other boards are mounted to the first board so as to define an angle therebetween. The LEDs can be mounted to the boards so as to independently define and angle therewith. They can also be oriented towards privileged directions. The present assembly allows providing a more uniform light distribution.

Claims

1. An assembly of light emitting diodes for a streetlight, comprising:

a first board, defining a first plane, having a first matrix of light emitting diodes (LEDs) mounted thereon, wherein the individual LEDs from said first matrix of LEDs are tilted toward said first board at a first angle; and

a second board, defining a second plane, having a second matrix of LEDs mounted thereon, wherein the individual LEDs from said second matrix of LEDs are tilted toward said second board at a second angle, said second board being mounted to said first board at an intersection so as to define a third angle,

wherein the LEDs of the first matrix and the LEDs of the second matrix are tilted toward the intersection of the first board and the second board,

wherein said second board is hingedly mounted to said first board so as to allow selectively modifying said third angle.

2. An assembly as recited in claim 1, wherein a first group of LEDs from said first matrix of LEDs defines a fourth angle with the intersection and a second group of LEDs from said second matrix of LEDs defines a fifth angle with the intersection.

3. An assembly as recited in claim 1, wherein each of said first and second boards are mounted in respective first and second panels.

4. An assembly as recited in claim 1, wherein said LEDs include at least two different types of LEDs.

5. An assembly as recited in claim 4, wherein said at least two different types of LEDs are characterized by at least one of a colour, an angle of light pattern, and intensity.

6. An assembly as recited in claim 4, wherein said at least two different types of LEDs are provided on a same one of first and second boards.

7. An assembly as recited in claim 1, wherein said first and second boards are each secured to an independent board mounting and angle adjustable mechanism which allows to independently adjust a respective angle between each of said first and second boards and a third plane of reference.