Simplified low profile module with light guide for pendant, surface mount, wall mount and stand alone luminaires

Patent metadata

Field	Value
Publication number	US-2019190850-A1
Application number	US-201916276772-A
Country	US
Kind code	A1
Filing date	Feb 15, 2019
Priority date	Jan 30, 2013
Publication date	Jun 20, 2019
Grant date	—

Abstract

A luminaire having a waveguide suspended beneath a mounting element, the waveguide has a first surface proximal to the mounting element, a second surface distal to the mounting element, and an edge between the first and the second surfaces. At least one cavity extends into the waveguide from the first surface to the second surface. A LED component is coupled to the waveguide so as to emit light into the cavity. LED support structures are also disclosed.

First claim

We claim:

1 . An LED support structure for use in a cavity in a waveguide, the LED support structure comprising:
a first surface; a plurality of LED devices mounted on the first surface; an elongate reflective member extending outwardly from between the plurality of LED devices; and a reflective element attached to an end of the elongate reflective member opposite the first surface.

2 . The LED support structure of claim 1 further comprising a housing supporting the first surface, wherein the housing includes a plurality of appendages that act as a heat sink.

3 . The LED support structure of claim 2 , wherein the appendages are fins.

4 . The LED support structure of claim 1 , wherein the support structure is inserted into the cavity in the waveguide.

5 . The LED support structure of claim 4 , wherein the cavity forms an indent in the waveguide and the indent is shaped to accommodate the reflective element.

6 . The LED support structure of claim 5 , wherein a reflective coating is applied to the indent.

7 . The LED support structure of claim 1 , wherein the elongate reflective member has a triangular cross section.

8 . The LED support structure of claim 1 , wherein:
the elongate reflective member defines a void therein; and a fastener is inserted into the void.

9 . An LED support structure for use in a cavity in a waveguide, the LED support structure comprising:
a first cap assembly comprised of:
a base member;
a LED mounting member extending from the base member; and
at least one LED mounted on an end of the mounting member distal to the base member.

10 . The LED support structure of claim 9 further comprising a second cap assembly having a conic portion opposite the LED member.

11 . The LED support structure of claim 9 , wherein fasteners secure the first cap assembly to the waveguide.

12 . The LED support structure of claim 10 , wherein:
the waveguide defines at least one through hole; the first cap assembly defines at least one through hole that is aligned with the waveguide through hole; the second cap assembly defines at least one through hole that is aligned with both the waveguide and first cap assembly through hole; and a fastener extends through the, respective, waveguide, first cap assembly, and second cap assembly through holes so as to secure the first and second cap assemblies to the waveguide.

13 . The LED support structure of claim 10 , wherein:
the fastener has a first end, a second end, and an intermediate section located between the first and the second end; and a portion of the intermediate section surrounded by the waveguide when the fastener secures the first and second cap assemblies to the waveguide is made of an optically transparent material.

14 . A luminaire comprising:
a waveguide suspended distal to a mounting element, said waveguide having a first surface proximal to the mounting element, a second surface distal to the mounting element, and an edge between the first and the second surfaces; at least one cavity extending into the waveguide from the first surface to the second surface; and at least one LED component connected to a first bar assembly, said at least one LED component associated with the first surface of the waveguide so as to emit light into the at least one cavity.

15 . The luminaire of claim 14 further comprising:
a second bar assembly connected to the second surface of the waveguide; and
said second bar assembly having at least one conic reflector element, wherein the at least one reflector element is aligned with the at least one LED component in the at least one cavity.

16 . The luminaire of claim 15 , wherein the first bar assembly is connected to the second bar assembly.

17 . The luminaire of claim 14 , wherein the first bar assembly includes a plurality of appendages that act as heat sinks.

18 . The luminaire of claim 14 further comprising:
a plurality of cavities extending into the waveguide from the first surface to the second surface; and
a plurality of LED components connected to the first bar assembly, said plurality of LED components coupled to the first surface of the waveguide so as to emit light into the, respective, plurality of cavities.

19 . The luminaire of claim 18 , wherein a through hole is located between at least two of the plurality of cavities.

20 . The luminaire of claim 14 , wherein at least the first surface includes a plurality of extraction features.

Assignees

• Cree Inc

Inventors

• Tarsa Eric J
• Benjamin Hormoz
• Keller Bernd P
• Wilcox Kurt S
• Yuan Zongjie

Classifications

• H04L49/103 Primary

  using a shared central buffer; using a shared memory · CPC title

• H04L49/254

  Centralised controller, i.e. arbitration or scheduling · CPC title

• H04L49/15

  Interconnection of switching modules · CPC title

• F21Y2113/00

  Combination of light sources · CPC title

• F21S8/061 Primary

  with a non-rigid pendant, i.e. a cable, wire or chain · CPC title