Lamppost head assembly with adjustable LED heat sink support

• US 8,641,234 B2
• Filed: 06/30/2011
• Issued: 02/04/2014
• Est. Priority Date: 06/30/2011
• Status: Active Grant

• Current Assignee: Groupe Ledel, Inc.
• Original Assignee: Groupe Ledel, Inc.
• Inventors: Chagnon, Camille, Dub, Jean-Guy, Morin, Jean
• Primary Examiner(s): Negron, Ismael
• Application Number:
  US13/173,067
• Publication Number:
  US 20130003378A1
• Time in Patent Office: 950 Days
• Field of Search: 362/523, 362/545, 362/547, 362/238, 362/240, 362/249.02, 362/249.03, 362/249.07, 362/249.1, 362/294, 362/373
• US Class Current: 362/249.07
• 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 19/02 with provision for adjustment, e.g. for focusing
• CPC Class Codes: F21V 21/14 Adjustable mountings
• CPC Class Codes: F21V 21/30 Pivoted housings or frames
• CPC Class Codes: F21V 29/507 of means for protecting lighting devices from damage, e.g. housings
• CPC Class Codes: F21V 29/73 the elements being adjustable with respect to each other, e.g. hinged
• CPC Class Codes: F21V 29/75 with fins or blades having different shapes, thicknesses or spacing
• CPC Class Codes: F21V 29/763 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• 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 2115/10 Light-emitting diodes [LED]

Abstract

A lamppost head assembly including a housing compartment having a cavity, a panel and at least one fastener. The panel has a plurality of Light Emitting Diodes (LEDs) positioned on a first surface and a heat sink positioned on a second surface opposite to the first surface. The heat sink is adapted to fit into the cavity for dissipating the panel'"'"'s heat into the housing compartment. The at least one fastener maintains the panel at an angle with the housing compartment from a plurality of angle options and may optionally further maintain the heat sink into the cavity.

Claims

1. A lamppost head assembly comprising:

a housing compartment having a cavity;

a panel having a plurality of Light Emitting Diodes (LEDs) positioned on a first surface and a heat sink positioned on a second surface opposite to the first surface, wherein the heat sink is adapted to fit into the cavity for dissipating the panel'"'"'s heat into the housing compartment; and

at least one fastener that maintains the panel at an angle with the housing compartment from a plurality of angle options, wherein the heat sink comprises an extending lip positioned at one end and a ledge at the other end, wherein the at least one fastener comprises;

a first fastener that fixes the ledge to the housing compartment; and

a bracket fixed to the housing compartment that holds to the heat sink lip, the height of the bracket determining the angle.

2. The lamppost head assembly of claim 1, wherein the at least one fastener further maintains the heat sink into the cavity.

3. The lamppost head assembly of claim 1, wherein the heat sink has a continuous surface formed by multiple fins and in contact with the cavity.

4. The lamppost head assembly of claim 1, wherein the cavity has a continuous surface formed by multiple fins and in contact with the heat sink.

5. The lamppost head assembly of claim 1, wherein the angle determines a distance at which a light beam from the panel is projected away from a mounting point of the housing compartment.

6. The lamppost head assembly of claim 1, wherein the cavity has a hemispherical socket shape and wherein the hemispherical socket shape is continuous.

7. The lamppost head assembly of claim 1 further comprising:

a second panel having a second plurality of Light Emitting Diodes (LEDs) positioned on a first surface of the second panel and the heat sink positioned on a second surface of the second panel opposite to the first surface of the second panel, wherein the at least one fastener further maintains the second panel at the angle.

8. The lamppost head assembly of claim 1, wherein the first fastener is a spring loaded screw rotatably attached to the housing compartment.

9. The lamppost head assembly of claim 1, wherein the heat sink is cast in a single metallic piece and wherein the housing compartment and the cavity are cast in a single metallic piece.

10. The lamppost head assembly of claim 1, wherein the cavity has a semicircular channel shape.

11. The lamppost head assembly of claim 10, wherein the semicircular channel shape is positioned perpendicularly from a longitudinal axis of the housing compartment and wherein the angle determines a distance at which a beam of light from the panel is projected away from a mounting point of the housing compartment.

12. The lamppost head assembly of claim 10, wherein the semicircular channel shape defines a plurality of surfaces or wherein the semicircular channel shape is continuous.

13. The lamppost head assembly of claim 1, wherein the panel can rotate within a panel frame and the at least one fastener comprises at least a first fastener that fixes the panel frame to the housing compartment thereby maintaining the heat sink in the cavity.

14. The lamppost head assembly of claim 13, wherein the at least one fastener comprises at least a second fastener between the panel and the panel frame that maintains the angle.

15. The lamppost head assembly of claim 13, wherein the at least one fastener comprises at least a second fastener between the heat sink and the cavity that maintains the angle.

16. The lamppost head assembly of claim 1 further comprising:

a second panel having a second plurality of Light Emitting Diodes (LEDs) positioned on a first surface of the second panel and a second heat sink positioned on a second surface of the second panel opposite to the first surface of the second panel.

17. The lamppost head assembly of claim 16, wherein the second heat sink is adapted to fit into the cavity for dissipating the second panel'"'"'s heat into the housing compartment and wherein the at least one fastener further maintains the second panel at the angle and maintains the second heat sink into the cavity.

18. The lamppost head assembly of claim 16, wherein the second heat sink is adapted to fit into a second cavity of the lamppost head assembly for dissipating the second panel'"'"'s heat into the housing compartment and wherein the at least one fastener comprises at least a first fastener that maintains the panel at the angle and a second fastener that maintains the second panel at a second angle from the pluralities of angle options.

19. The lamppost head assembly of claim 18, wherein the angle and the second angle are substantially equal.