US 10,663,153 B2Granted

Methods and apparatus for adjusting a luminaire

AssigneeDMF, Inc.

InventorsAli A. Nikooyan, Amir Lotfi, Michael D. Danesh, William Wai-Loong Young

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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.

Claims54

Dependent claims

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.

4 more elements

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.

17 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/690,970Filed 21 Nov 2019 · continuation
Priority: 27 Dec 2017
Published: US 2020/0116340 A116 Apr 2020
Granted: 26 May 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

F21V 21/30
Adjustable mountings: pivoted housings or frames
F21S 8/026
Of recess-mounted type, e.g. downlighters: intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
F21V 1/10
Shades for light sources , i.e. lampshades for table, floor, wall or ceiling lamps: rotating shades
F21V 14/02
Controlling the distribution of the light emitted by adjustment of elements: by movement of light sources

Family

Application62/610,864Us provisional application · filed 27 Dec 2017
Application62/728,451Us provisional application · filed 7 Sep 2018
PCT/US2018/067614Parent of this continuation · filed 27 Dec 2018
US 2020/0116340 A1Pre-grant publication · published 16 Apr 2020
US 10,663,153 B2This patent

From the US filing history. Foreign family members aren’t listed.