Methods and apparatus for adjusting a luminaire

Patent metadata

Field	Value
Publication number	US-11448384-B2
Application number	US-202016883144-A
Country	US
Kind code	B2
Filing date	May 26, 2020
Priority date	Dec 27, 2017
Publication date	Sep 20, 2022
Grant date	Sep 20, 2022

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:
an adjustable mount, comprising:
a base structure having a sidewall defining a cavity with a first opening and a second opening; and
a motion rail, coupled to the base structure, having a convex portion defining a curved profile; and

a lighting module rotatably coupled to the base structure, the lighting module comprising:
a heat sink;
a light source, coupled to the heat sink and at least partially disposed within the cavity of the base structure through the first opening, to emit light through the second opening; and
a motion track, rigidly coupled to the heat sink and slidably coupled to the motion rail, having a concave portion that directly contacts the convex portion of the motion rail such that the lighting module moves along the curved profile of the motion rail relative to the adjustable mount when the lighting module is rotated with respect to the adjustable mount.

2. The adjustable lighting apparatus of claim 1 , wherein:
the adjustable mount further comprises:
a shield, coupled to the base structure, to cover at least a portion of the first opening of the base structure, the shield being only translationally movable with respect to the base structure; and

the lighting module translates together with the shield when the lighting module rotates with respect to the adjustable mount.

3. The adjustable lighting apparatus of claim 2 , wherein:
the shield includes a third opening;
the lighting module includes a light source that passes through a first portion of the third opening; and
the adjustable mount further comprises:
a secondary shield, directly coupled to the shield, to cover a second portion of the third opening different from the first portion.

4. The adjustable lighting apparatus of claim 3 , wherein:
the light source passes through the first portion of the third opening when the lighting module is at a first rotational position; and
the light source physically contacts and displaces at least a portion of the secondary shield by bending a compliant portion of the secondary shield when the lighting module is rotated from the first rotational position to a second rotational position such that the light source passes through the second portion of the third opening when the lighting module is at the second rotational position.

5. The adjustable lighting apparatus of claim 1 , further comprising:
a push bracket, disposed within the cavity of the base structure and coupled to the lighting module, to adjust a rotational position of the lighting module in a tool-less manner.

6. The adjustable lighting apparatus of claim 1 , wherein the motion rail and the motion track each have mechanical stops that limit the rotation of the lighting module with respect to the base structure.

7. The adjustable lighting apparatus of claim 1 , wherein the curved profile causes the lighting module to translate with respect to the adjustable mount.

8. The adjustable lighting apparatus of claim 1 , wherein:
the curved profile includes a center of curvature; and
the motion track is coupled to a pivot arm that is rotatably coupled to the base structure via a pin joint, the pin joint being offset from the center of curvature.

9. The adjustable lighting apparatus of claim 1 , wherein:
the sidewall of the base structure includes a first edge defining a top portion of the first opening and a second edge defining a side portion of the first opening;
the lighting module at least partially passes through the top portion of the first opening when the lighting module is at a first rotational position; and
the lighting module at least partially passes through the side portion of the first opening when the lighting module is at a second rotational position.

10. The adjustable lighting apparatus of claim 1 , further comprising:
a frame defining an opening; and
a rotation ring rotatably coupled to the base structure of the adjustable mount and securely coupled to the frame such that the adjustable mount and the lighting module are rotatable together with respect to the rotation ring and the frame.

11. The adjustable lighting apparatus of claim 1 , wherein the lighting module further comprises:
a first electrical connector, coupled to the heat sink and electrically coupled to the light source; and
a driver assembly, comprising:
a housing, coupled to the heat sink via a twist and lock connection mechanism, defining a second cavity;
a second electrical connector coupled to the housing and electrically coupled to the first electrical connector;
a third electrical connector, coupled to the housing, to receive electrical power; and
a driver, disposed in the second cavity and electrically coupled to the second and third electrical connectors, to receive the electrical power from the third electrical connector and to supply the electrical power to the light source via the second electrical connector.

12. The adjustable lighting apparatus of claim 11 , wherein the second electrical connector slidably engages the first electrical connector when the driver assembly is coupled to the heat sink via the twist and lock mechanism so as to electrically couple the driver to the light source in a tool-less manner.

13. The adjustable lighting apparatus of claim 11 , wherein the heat sink includes a central support that physically contacts the housing of the driver assembly.

14. The adjustable lighting apparatus of claim 1 , further comprising:
a push spring, securely coupled to the lighting module and slidably coupled to the base structure, to change a rotational position of the lighting module when the push spring is pulled or pushed, the push spring being a curved beam.

15. The adjustable lighting apparatus of claim 1 , wherein the lighting module further comprises:
a driver assembly disposed outside the cavity of base structure and above the heat sink, the driver assembly comprising:
a housing defining a second cavity; and
a driver, disposed within the second cavity, to supply the electrical power to the light source.

16. An adjustable lighting apparatus, comprising:
an adjustable mount, comprising:
a base structure having a sidewall defining a cavity with a first opening and a second opening;

a lighting module rotatably coupled to the base structure, the lighting module comprising:
a heat sink;
a light source, coupled to the heat sink and at least partially disposed within the cavity of the base structure through the first opening, to emit light through the second opening; and

a push spring, securely coupled to the lighting module and slidably coupled to the base structure, to change a rotational position of the lighting module, the push spring being a deformable curved beam such that, when the push spring is one of pulled or pushed along a first axis, a force is applied to the lighting module along a second axis different from the first axis that changes the rotational position of the lighting module.

17. The adjustable lighting apparatus of claim 16 , wherein:
the adjustable mount further comprises:
a motion rail, coupled to the base structure, having a curved profile; and

the lighting module further comprises:
a motion track rigidly coupled to the heat sink and slidably coupled to the motion rail such that the lighting module moves along the curved profile of the motion rail relative to the adjustable mount when the lighting module is rotated with respect to the adjustable mount.

18. The adjustable lighting apparatus of claim 16 , wherein physic

Assignees

• Dmf Inc

Inventors

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

Classifications

• F21V21/04 Primary

  Recessed bases · CPC title

• F21V1/10

  Rotating shades · CPC title

• F21V23/06

  the elements being coupling devices {, e.g. connectors} · CPC title

• F21V23/007

  enclosed in a casing · CPC title

• F21V21/30 Primary

  Pivoted housings or frames · CPC title