Methods and apparatus for adjusting a luminaire

• US 10,663,153 B2
• Filed: 11/21/2019
• Issued: 05/26/2020
• Est. Priority Date: 12/27/2017
• Status: Active Grant

• Current Assignee: DMF Incorporated
• Original Assignee: DMF Incorporated
• Inventors: Nikooyan, Ali A., Lotfi, Amir, Danesh, Michael D., Young, William Wai-Loong
• Primary Examiner(s): Peerce, Matthew J.
• Assistant Examiner(s): Horikoshi, Steven Y
• Application Number:
  US16/690,970
• Publication Number:
  US 20200116340A1
• Time in Patent Office: 187 Days
• CPC Class Codes: F21S 8/026 intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
• CPC Class Codes: F21V 1/10 Rotating shades
• CPC Class Codes: F21V 14/02 by movement of light sources in vehicle head lamps F21S41/657
• CPC Class Codes: F21V 17/14 Bayonet-type fastening
• CPC Class Codes: F21V 21/04 Recessed bases
• CPC Class Codes: F21V 21/30 Pivoted housings or frames
• CPC Class Codes: F21V 23/007 enclosed in a casing
• CPC Class Codes: F21V 23/06 the elements being coupling devices , e.g. connectors
• CPC Class Codes: F21V 29/76 with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

An adjustable lighting apparatus includes a lighting module that is rotatably adjustable about a first rotation axis relative to an adjustable mount. The lighting module may include a heat sink, a driver, and a light source. The adjustable mount may include a base structure, a retainer, a shield, and a secondary shield. A trim may also be coupled to the adjustable mount. In some implementations, the lighting module translates along a first translation axis defined by the adjustable mount while rotating about the first rotation axis in order to reorient the light source while reducing shading losses caused by the adjustable mount. Openings in the base structure and the shield may be substantially covered at all rotational positions of the lighting module using a combination of the shield, the trim, the heat sink, and the secondary shield, thus eliminating the need for an additional enclosure.

Claims

1. An adjustable lighting apparatus, comprising:

a lighting module having a light source to emit light and at least one motion track, the lighting module being rotatable about a first rotation axis; and

an adjustable mount having a first cavity that substantially surrounds the light source, a first opening that is aligned proximate to the lighting module, and a second opening through which light from the light source passes through, the adjustable mount having one or more slots defining one or more translation axes, the adjustable mount having at least one motion rail that is slidable relative to the at least one motion track,

wherein the first rotation axis intersects a first translation axis from the one or more translation axes,

wherein the at least one motion track and the at least one motion rail cause the lighting module to translate along the first translation axis when rotating about the first rotation axis,

wherein the adjustable mount includes a shield, disposed, at least in part, inside the first cavity of the adjustable mount, having a second cavity that substantially surrounds the light source, the light source being disposed, in part, through a rotation slot on the shield,

wherein the shield is coupled to the lighting module and the adjustable mount such that the shield translates with the lighting module along only the first translation axis when the lighting module rotates about the first rotation axis.

2. The adjustable lighting apparatus of claim 1, wherein the range of rotation of the lighting module includes a first rotational position and a second rotational position,

the first rotational position being defined as the angle between (1) a reference axis orthogonal to the first rotation axis and the first translation axis and (2) a lighting module axis, which intersects the first rotation axis and rotates with the lighting module, at a first angle corresponding to the first rotational position,

the second rotational position being defined as the angle between (1) the reference axis and (2) the lighting module axis at a second angle corresponding to the second rotational position.

3. The adjustable lighting apparatus of claim 2, wherein the first angle is about 0 degrees and the second angle is about 40 degrees.

4. The adjustable lighting apparatus of claim 2, further comprising:

a secondary shield mechanically coupled to the shield,

the secondary shield covering a portion of the rotation slot of the shield when the lighting module is in the first rotational position,

the secondary shield being movable by the lighting module such that the secondary shield does not cover the portion of the rotation slot of the shield when the lighting module is at the second rotational position.

5. The adjustable lighting apparatus of claim 4, wherein the secondary shield is coupled to the shield via one or more flexible members.

6. The adjustable lighting apparatus of claim 4, wherein the lighting module and the secondary shield substantially covers the rotation slot of the shield when the lighting module is at the first rotational position.

7. The adjustable lighting apparatus of claim 4, wherein the lighting module substantially covers the rotation slot of the shield when the lighting module is at the second rotational position.

8. The adjustable lighting apparatus of claim 2, further comprising:

a trim, disposed, in part, inside the first cavity of the adjustable mount, to cover a hole or a ceiling in which the adjustable lighting apparatus is placed.

9. The adjustable lighting apparatus of claim 8, wherein the trim includes a first opening to receive the light from the light source,

the first opening of the trim having a first edge that is coplanar with a first plane and a second edge that is coplanar with a second plane,

the first plane having a first normal vector substantially parallel to the lighting module axis at the first rotational position,

the second plane having a second normal vector substantially parallel to the lighting module axis at the second rotational position.

10. The adjustable lighting apparatus of claim 9, wherein the shield is positioned within the first cavity of the adjustable mount so as to substantially cover the first opening of the adjustable mount when the lighting module is at the first rotational position.

11. The adjustable lighting apparatus of claim 9, wherein an edge of the shield is aligned proximate to the first edge of the trim such that the trim and the shield substantially cover the first opening of the adjustable mount when the lighting module is at the second rotational position.

12. The adjustable lighting apparatus of claim 8, wherein the trim is coupled to the adjustable mount using at least one of a clip, a screw, a bolt, a clamp, or an adhesive.

13. The adjustable lighting apparatus of claim 1, wherein the at least one motion track and the at least one motion rail limit the range of rotation of the lighting module.

14. The adjustable lighting apparatus of claim 1, wherein the lighting module is coupled to each one of the one or more slots via corresponding one or more pins, wherein the shield is coupled to at least one of the one or more pins so as to form a pin joint with the lighting module thereby allowing the lighting module to rotate about the first rotation axis relative to the shield.

15. The adjustable lighting apparatus of claim 14, wherein the at least one of the one or more pins is coupled to a locking nut to lock the rotational position of the lighting module.

16. The adjustable lighting apparatus of claim 1, wherein the shield includes one or more stabilizing slots that define one or more secondary translation axes, the one or more secondary translation axes being substantially parallel to the one or more translation axes of the one or more slots on the adjustable mount,

wherein each one of the one or more stabilizing slots receives a corresponding stabilizing pin rigidly coupled to the adjustable mount such that the one or more stabilizing slots slides relative to the corresponding stabilizing pin when the shield translates along the first translation axis.

17. The adjustable lighting apparatus of claim 1, wherein the at least one motion track and the at least one motion rail are shaped to have a curved path, the curved path having a center of curvature that does not intersect the first rotation axis.

18. The adjustable lighting apparatus of claim 1, wherein the lighting module includes a push bracket that extends into at least one of the first cavity of the adjustable mount or the second cavity of the shield.

19. The adjustable lighting apparatus of claim 1, wherein the lighting module further comprises:

a heat sink having a central region to couple to the light source; and

a driver, mechanically coupled to the heat sink, to supply power to the light source.

20. The adjustable lighting apparatus of claim 19, wherein the lighting module further comprises:

at least one heat sink arm, coupled to the heat sink, having a pivot arm intersecting the first rotation axis such that the lighting module rotates about the first rotation axis via the pivot arm, the at least one heat sink arm defining the at least one motion track.

21. The adjustable lighting apparatus of claim 19, wherein the heat sink is formed from at least one of aluminum, copper, carbon steel, stainless steel, or any alloys of the foregoing.

22. The adjustable lighting apparatus of claim 20, wherein the at least one heat sink arm are formed from at least one of aluminum, polyoxymethylene, polytetrafluorothene, or graphite.

23. The adjustable lighting apparatus of claim 1, further comprising:

a rotation ring having a first through hole opening defined by a first sidewall coupled to the second opening of the adjustable mount,

the adjustable mount being rotatably adjustable relative to the rotation ring about a second rotation axis substantially perpendicular to the first rotation axis; and

a frame having a second through hole opening defined by a second sidewall into which the rotation ring may be inserted.

24. The adjustable lighting apparatus of claim 23, wherein the rotation ring is coupled to the adjustable mount using at least one retainer, the at least one retainer having at least one of a rail structure or a track structure that mates to a corresponding track structure or rail structure, respectively, of the rotation ring.

25. The adjustable lighting apparatus of claim 24, wherein the at least one retainer is formed from at least one of aluminum, polyoxymethylene, polytetrafluorothene, or graphite.

26. The adjustable lighting apparatus of claim 23, wherein the rotation ring includes at least one of a ball plunger or a spring clip disposed along the exterior of the first sidewall to form a press fit connection between the rotation ring and the frame.

27. The adjustable lighting apparatus of claim 23, wherein the rotation ring includes a safety mechanism to prevent the adjustable mount, the lighting module, and the shield from falling through the second through hole opening of the frame.

28. The adjustable lighting apparatus of claim 27, wherein the safety mechanism is at least one of a safety pin or a safety cable coupling the rotation ring to the frame.

29. The adjustable lighting apparatus of claim 23, wherein the frame does not include an enclosure disposed around the lighting module and the adjustable mount.

30. An adjustable lighting apparatus, comprising:

a lighting module, comprising;

a heat sink having a first cavity, the first cavity having a central region;

a light source, disposed partially in the first cavity and coupled to the central region of the heat sink, to emit light;

a driver, coupled to the heat sink, to supply electrical power to the light source;

a first heat sink arm, coupled to a first side of the heat sink, having a first motion track and a first pivot arm;

a second heat sink arm, coupled to a second side of the heat sink opposite to the first side of the heat sink, having a second motion track and a second pivot arm, the second heat sink arm being aligned to the first heat sink arm so as to be substantially symmetric about a first symmetry plane,

wherein the lighting module is rotatable about a first rotation axis perpendicular to both the first side of the heat sink and the second side of the heat sink, the first rotation axis intersecting the first pivot arm and the second pivot arm;

an adjustable mount, comprising;

a base structure having a sidewall that defines a second cavity that substantially surrounds the light source, a first opening that is aligned proximate to the lighting module, and a second opening through which light from the light source passes through, the base structure further including a first slot, disposed on a first side of the base structure, defining a first translation axis and a second slot, disposed on a second side of the base structure opposite to the first side of the base structure, defining a second translation axis, the first translation axis and the second translation axis being substantially parallel, the first rotation axis being substantially orthogonal to both the first translation axis and the second translation axis,

wherein the first rotation axis is translatable along the first translation axis and the second translation axis;

a first retainer, mechanically coupled to the first side of the base structure, having a first motion rail that slides relative to the first motion track;

a second retainer, mechanically coupled to the second side of the base structure, having a second motion rail that slides relative to the second motion track,

wherein the first motion rail is aligned to the second motion rail so as to be substantially symmetric about the first symmetry plane,

wherein the first motion rail, the first motion track, the second motion rail, and the second motion track are shaped such that the lighting module translates along the first translation axis when the lighting module rotates about the first rotation axis;

a shield, disposed, at least in part, in both the first cavity and the second cavity, having a third cavity that substantially surrounds the light source, the light source being disposed, in part, through a rotation slot on the shield, a first tab rotatably coupled to the first pivot arm of the first heat sink arm, a second tab rotatably coupled to the second pivot arm of the second heat sink arm, a first stabilizing slot, disposed on a first side of the shield, defining a third translation axis substantially parallel to the first translation axis, and a second stabilizing slot, disposed on a second side of the shield, defining a fourth translation axis substantially parallel to the first translation axis,

the first stabilizing slot receiving a first stabilizing pin rigidly coupled to the first retainer such that the first stabilizing slot is slidable along the first stabilizing pin,

the second stabilizing slot receiving a second stabilizing pin rigidly coupled to the second retainer such that the second stabilizing slot is slidable along the second stabilizing pin,

wherein the first tab, the first stabilizing slot, the second tab, and the second stabilizing slot cause the shield to translate along the first translation axis with the lighting module when the lighting module rotates about the first rotation axis; and

a secondary shield, mechanically coupled to the shield, to cover a portion of the rotation slot of the shield.

31. The adjustable lighting apparatus of claim 30, wherein the range of rotation of the lighting module includes a first rotational position and a second rotational position,

the first rotational position being defined as the angle between (1) a reference axis orthogonal to the first rotation axis and the first translation axis and (2) a lighting module axis, which intersects the first rotation axis and rotates with the lighting module, at a first angle corresponding to the first rotational position,

the second rotational position being defined as the angle between (1) the reference axis and (2) the lighting module axis at a second angle corresponding to the second rotational position.

32. The adjustable lighting apparatus of claim 31, wherein the first angle is about 0 degrees and the second angle is about 40 degrees.

33. The adjustable lighting apparatus of claim 31, wherein the secondary shield covers a portion of the rotation slot of the shield when the lighting module is at the first rotational position,

wherein the secondary shield is movable by the lighting module such that the secondary shield does not cover the portion of the rotation slot of the shield when the lighting module is at the second rotational position.

34. The adjustable lighting apparatus of claim 33, wherein the lighting module and the secondary shield substantially covers the rotation slot of the shield when the lighting module is at the first rotational position.

35. The adjustable lighting apparatus of claim 33, wherein the lighting module substantially covers the rotation slot of the shield when the lighting module is at the second rotational position.

36. The adjustable lighting apparatus of claim 31, further comprising:

a trim, disposed, in part, inside the first cavity of the adjustable mount, to cover a hole or a ceiling in which the adjustable lighting apparatus is placed.

37. The adjustable lighting apparatus of claim 36, wherein the trim includes a first opening to receive the light from the light source,

the first opening of the trim having a first edge that is coplanar with a first plane and a second edge that is coplanar with a second plane,

the first plane having a first normal vector substantially parallel to the lighting module axis at the first rotational position,

the second plane having a second normal vector substantially parallel to the lighting module axis at the second rotational position.

38. The adjustable lighting apparatus of claim 37, wherein the shield is positioned within the first cavity of the adjustable mount so as to substantially cover the first opening of the adjustable mount when the lighting module is at the first rotational position.

39. The adjustable lighting apparatus of claim 37, wherein an edge of the shield is aligned proximate to the first edge of the trim such that the trim and the shield substantially cover the first opening of the adjustable mount when the lighting module is at the second rotational position.

40. The adjustable lighting apparatus of claim 36, wherein the trim is coupled to the adjustable mount using at least one of a clip, a screw, a bolt, a clamp, or an adhesive.

41. The adjustable lighting apparatus of claim 30, wherein the at least one motion track and the at least one motion rail limit the range of rotation of the lighting module.

42. The adjustable lighting apparatus of claim 30, wherein the lighting module is coupled to the first slot by a first pin and the second slot by a second pin, wherein the shield is coupled to the first pin and the second pin to form a pin joint with the lighting module thereby allowing the lighting module to rotate about the first rotation axis relative to the shield.

43. The adjustable lighting apparatus of claim 42, wherein at least one of the first pin or the second pin is coupled to a locking nut to lock the rotational position of the lighting module.

44. The adjustable lighting apparatus of claim 30, wherein the lighting module includes a push bracket that extends into at least one of the first cavity of the adjustable mount or the second cavity of the shield.

45. The adjustable lighting apparatus of claim 30, wherein the heat sink is formed from at least one of aluminum, copper, carbon steel, stainless steel, or any alloys of the foregoing.

46. The adjustable lighting apparatus of claim 30, wherein the first heat sink arm and the second heat sink arm are formed from at least one of at least one of aluminum, polyoxymethylene, polytetrafluorothene, or graphite.

47. The adjustable lighting apparatus of claim 30, wherein the first retainer and the second retainer are formed from at least one of aluminum, polyoxymethylene, polytetrafluorothene, or graphite.

48. The adjustable lighting apparatus of claim 30, wherein the secondary shield is coupled to the shield via one or more flexible members.

49. The adjustable lighting apparatus of claim 30, further comprising:

a rotation ring having a first through hole opening defined by a first sidewall coupled to the second opening of the adjustable mount,

the adjustable mount being rotatably adjustable relative to the rotation ring about a second rotation axis substantially perpendicular to the first rotation axis; and

a frame having a second through hole opening defined by a second sidewall into which the rotation ring may be inserted.

50. The adjustable lighting apparatus of claim 49, wherein the rotation ring is coupled to the adjustable mount using at least one retainer, the at least one retainer having at least one of a rail structure or a track structure that mates to a corresponding track structure or rail structure, respectively, of the rotation ring.

51. The adjustable lighting apparatus of claim 49, wherein the rotation ring includes at least one of a ball plunger or a spring clip disposed along the exterior of the first sidewall to form a press fit connection between the rotation ring and the frame.

52. The adjustable lighting apparatus of claim 49, wherein the rotation ring includes a safety mechanism to prevent the adjustable mount, the lighting module, and the shield from falling through the second through hole opening of the frame.

53. The adjustable lighting apparatus of claim 52, wherein the safety mechanism is at least one of a safety pin or a safety cable coupling the rotation ring to the frame.

54. The adjustable lighting apparatus of claim 49, wherein the frame does not include an enclosure disposed around the lighting module and the adjustable mount.