LED reflector lamp

• US 20090002997A1
• Filed: 06/02/2008
• Published: 01/01/2009
• Est. Priority Date: 05/31/2007
• Status: Active Grant

• Current Assignee: George H. Koester
• Original Assignee: George H. Koester
• Inventors: Koester, George H.
• Granted Patent: US 7,824,076 B2
• Time in Patent Office: Days
• US Class Current: 362/294
• CPC Class Codes: F21K 9/68 Details of reflectors forming part of the light source
• CPC Class Codes: F21S 41/00 Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps reversing lights F21S43/00
• CPC Class Codes: F21S 41/143 the main emission direction of the LED being parallel to the optical axis of the illuminating device
• CPC Class Codes: F21S 41/147 the main emission direction of the LED being angled to the optical axis of the illuminating device
• CPC Class Codes: F21S 41/151 arranged in one or more lines
• CPC Class Codes: F21S 45/47 Passive cooling, e.g. using fins, thermal conductive elements or openings
• CPC Class Codes: F21S 45/60 Heating of lighting devices, e.g. for demisting
• CPC Class Codes: F21V 13/10 the elements being reflectors and screens
• CPC Class Codes: F21V 29/71 using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
• 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 29/77 with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
• CPC Class Codes: F21W 2107/10 for land vehicles
• CPC Class Codes: F21W 2107/30 for aircraft
• 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

A lamp having a reflective surface, a pedestal positioned within the interior defined by the reflective surface, and one or more light emitting diodes (LED'"'"'s) mounted onto one or more occluding faces on the pedestal, such that each occluding face blocks light emitted from the LED'"'"'s from a portion of the reflective surface. The occluding faces are oriented parallel to or at an acute angle to the central axis of the reflective surface.

Claims

1. An LED reflective lamp comprising:

a housing comprising a reflective surface defining an interior area and a central axis;

a pedestal member extending into said interior area;

at least one occluding face disposed on said pedestal member, said at least one occluding face oriented rearward toward said interior area and parallel to or at an acute angle to said central axis;

at least one LED disposed on said at least one occluding face;

whereby said at least one occluding face allows light emitted from said at least one LED disposed thereon to strike only a target portion of said reflective surface while precluding light emitted from said at least one LED from striking other portions of said reflective surface.

2. The lamp of claim 1, wherein said at least one occluding face is oriented at an angle between zero and 30 degrees.

3. The lamp of claim 1, wherein said at least one occluding face is planar.

4. The lamp of claim 1, wherein said at least one occluding face comprises a pair of opposing faces each having at least one LED disposed thereon.

5. The lamp of claim 1, wherein said at least one occluding face comprises two pairs of opposing occluding faces each having at least one LED disposed thereon.

6. The lamp of claim 1, wherein said at least one LED comprises multiple LED'"'"'s independently controlled.

7. The lamp of claim 1, wherein said pedestal member is composed of a material which functions as a heat sink.

8. The lamp of claim 1, further comprising a secondary heat sink member mounted on said pedestal member.

9. The lamp of claim 8, wherein said secondary heat sink member extends forward from said pedestal member.

10. The lamp of claim 1, wherein said reflective surface is parabolic.

11. An LED reflective lamp comprising:

a housing comprising a reflective surface defining an interior area and a central axis;

a multi-faceted pedestal member extending into said interior area of said reflective surface;

at least two occluding faces disposed on said pedestal member, said at least two occluding faces each oriented rearward toward said interior area;

at least one LED disposed on each of said at least two occluding faces;

whereby each of said at least two occluding faces allows light emitted from said at least one LED disposed thereon to strike only a target portion of said reflective surface while precluding light emitted from said at least one LED from striking other portions of said reflective surface, wherein the target portion of one of said at least two occluding faces is different from the target portion of the other of said at least two occluding faces.

12. The lamp of claim 11, wherein each of said at least two occluding faces is oriented at an acute angle to said central axis.

13. The lamp of claim 11, wherein each of said at least two occluding faces are parallel to said central axis.

14. The lamp of claim 12, wherein each of said at least two occluding faces is oriented at an angle to said central axis of less than about 30 degrees.

15. The lamp of claim 11, wherein each of said at least two occluding faces is planar.

16. The lamp of claim 11, wherein said at least two occluding faces comprises a pair of opposing faces oriented at approximately 180 degrees about said central axis.

17. The lamp of claim 16, further comprising another pair of opposing occluding faces oriented at approximately 180 degrees about said central axis.

18. The lamp of claim 16, further comprising a non-reflecting LED positioned on the forward end of said pedestal member.

19. The lamp of claim 11, wherein said LED'"'"'s are independently controlled.

20. The lamp of claim 11, wherein said reflective surface is parabolic.