Methods and apparatus for adjusting a luminaire

Patent metadata

Field	Value
Publication number	US-10663153-B2
Application number	US-201916690970-A
Country	US
Kind code	B2
Filing date	Nov 21, 2019
Priority date	Dec 27, 2017
Publication date	May 26, 2020
Grant date	May 26, 2020

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.

First claim

The invention claimed is:

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

Assignees

• Nikooyan Ali A
• Lotfi Amir
• Danesh Michael D
• Young William Wai Loong
• Dmf Inc

Inventors

• Nikooyan Ali A
• Lotfi Amir
• Danesh Michael D
• Young William Wai-Loong

Classifications

• F21S8/026

  intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling · CPC title

• F21V17/14

  Bayonet-type fastening · CPC title

• F21V21/30 Primary

  Pivoted housings or frames · CPC title

• F21V23/007

  enclosed in a casing · CPC title

• F21V1/10

  Rotating shades · CPC title