Low profile light having elongated reflector and associated methods

• US 9,028,091 B2
• Filed: 03/13/2013
• Issued: 05/12/2015
• Est. Priority Date: 10/05/2009
• Status: Active Grant

• Current Assignee: Lighting Science Group Corporation (Pegasus Capital Advisors, L.P.)
• Original Assignee: Lighting Science Group Corporation (Pegasus Capital Advisors, L.P.)
• Inventors: Holland, Eric, Boomgaarden, Mark Penley, Kelley, Ryan
• Primary Examiner(s): Alavi, Ali
• Application Number:
  US13/800,253
• Publication Number:
  US 20130223055A1
• Time in Patent Office: 790 Days
• Field of Search: 362/218, 362/217.07, 362/249.02, 362/235, 362/238, 362/245, 362/247, 362/294, 315/291
• US Class Current: 362/218
• CPC Class Codes: F21K 9/20 Light sources comprising attachment means
• CPC Class Codes: F21S 8/026 intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
• CPC Class Codes: F21S 8/04 intended only for mounting on a ceiling or the like overhead structures F21S8/02 takes precedence; details of ceiling bases F21V21/03
• CPC Class Codes: F21V 13/04 the elements being reflectors and refractors for vehicle rear lights F21S43/40
• CPC Class Codes: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 21/02 Wall, ceiling, or floor bases; Fixing pendants or arms to the bases F21V21/08 takes precedence; bases for movable standing lamps F21V21/06
• CPC Class Codes: F21V 21/04 Recessed bases
• CPC Class Codes: F21V 23/002 Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
• CPC Class Codes: F21V 23/026 Fastening of transformers or ballasts
• CPC Class Codes: F21V 23/04 the elements being switches safety devices F21V25/00
• CPC Class Codes: F21V 23/0471 the sensor detecting the proximity, the presence or the movement of an object or a person
• CPC Class Codes: F21V 29/503 of light sources cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H01L33/64
• CPC Class Codes: F21V 29/507 of means for protecting lighting devices from damage, e.g. housings
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 5/10 comprising photoluminescent material
• CPC Class Codes: F21V 7/0008 providing for indirect lighting
• CPC Class Codes: F21V 7/005 with an elongated shape to cooperate with linear light sources
• CPC Class Codes: F21V 9/08 for producing coloured light, e.g. monochromatic; for reducing intensity of light with provision for controlling the colour F21V9/40
• CPC Class Codes: F21Y 2103/33 annular
• CPC Class Codes: F21Y 2113/13 : comprising an assembly of point-like light sources
• CPC Class Codes: F21Y 2115/10 : Light-emitting diodes [LED]

Abstract

A luminaire to be carried by a lighting fixture. The luminaire may include a housing, a primary optic disposed within the housing having a reflective inner surface defining an optical chamber, a light source, and a heat sink defining an aperture through which light may propagate. The light source may include a plurality of light-emitting diodes (LEDs). The luminaire may further include a secondary optic positioned adjacent to the light source that may collimate and/or refract light emitted by the light source, and may form a seal between the light source and the optical chamber. The luminaire may further include a color conversion layer configured to change the color of light emitted by the light source.

Claims

1. A luminaire adapted to be carried by a light fixture comprising:

a housing;

a primary optic disposed within the housing having a reflective inner surface and a generally elongated shape defining an optical chamber and an aperture;

a light source;

a heat sink;

a secondary optic positioned adjacent to the light source; and

a plurality of hanger holes;

wherein the light source is positioned in thermal communication with the heat sink;

wherein light emitted by the light source enters the optical chamber incident upon the reflective inner surface of the primary optic, and is reflected through the aperture;

wherein the secondary optic is configured to attach to the heat sink and form a seal between the light source and the optical chamber;

wherein the primary optic further comprises an attachment structure positioned on the outer surface of the primary optic; and

wherein each of the plurality of hanger holes is configured to attach to an external light fixture.

2. A luminaire according to claim 1 further comprising an occupancy sensor having a field of view;

wherein the controller is in communication with the occupancy sensor;

wherein the occupancy sensor is configured to determine whether an object is within the field of view of the occupancy sensor;

wherein the occupancy sensor is configured to transmit a positive indication when an object is determined to be within the field of view; and

wherein the controller is configured to operate the light source to illuminate the field of view of the occupancy sensor upon receiving the positive indication.

3. A luminaire according to claim 2 wherein the occupancy sensor is configured to determine the position of the object along the length of the luminaire;

and wherein the controller is configured to operate the plurality of LEDs adjacent to the same position as the object along the length of the luminaire.

4. A luminaire according to claim 1 further comprising a network interface configured to enable communication with a network;

wherein the controller is in communication with the network interface;

wherein the network interface is operable to receive communications across the network and provide an instruction to the controller; and

wherein the controller operates the light source responsive to the instruction received from the network interface.

5. A luminaire according to claim 4 wherein the network comprises a plurality of luminaires;

wherein the controller is operable to send an instruction to the network interface; and

wherein the network interface is operable to transmit the instruction to each of the plurality of luminaires across the network.