ELONGATED LUMINAIRE COMPRISING LEDS FOR ILLUMINATING OBJECTS IN FRONT OF THE LUMINAIRE

• US 20100232156A1
• Filed: 10/20/2008
• Published: 09/16/2010
• Est. Priority Date: 10/25/2007
• Status: Active Grant

• Current Assignee: Philips Lighting BV (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Timmers, Wilhelmus Adrianus Gerardus, Van Lier, Edwin, Van Oers, Denis Joseph Carel, Tukker, Teunis Willem
• Granted Patent: US 8,337,044 B2
• Time in Patent Office: Days
• US Class Current: 362/235
• CPC Class Codes: A47F 3/001 Devices for lighting, humidifying, heating, ventilation
• CPC Class Codes: A47F 3/04 air-conditioned, refrigerated refrigerators F25D; heating arrangements specially adapted for transparent or reflecting areas H05B3/84
• CPC Class Codes: F21S 4/20 with light sources held by or within elongate supports
• CPC Class Codes: F21W 2131/305 for refrigerators
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: F25D 27/00 Lighting arrangements in general F21
• CPC Class Codes: G02B 19/0028 refractive and reflective surfaces, e.g. non-imaging catadioptric systems
• CPC Class Codes: G02B 19/0066 in the form of an LED array

Abstract

An elongated luminaire for illuminating objects in front of the luminaire, comprising a plurality of side emitting LEDs (1) in only one straight array mounted on an elongated base plate (2). The base plate (2) carries two elongated reflectors (3) extending on either side of the array of LEDs (1) and parallel to the array of LEDs (1). Each reflector (3) has a reflecting surface (4) directed towards the array of LEDs (1).

Claims

1. An elongated luminaire, comprising a plurality of side-emitting LEDs disposed in at least one array mounted on an elongated base plate, wherein the base plate carries at least two elongated reflectors extending at each side of the array of LEDs and parallel to the array of LEDs, with each reflector having a reflecting surface directed towards the array of LEDs.

2. An elongated luminaire as claimed in claim 1, wherein the reflecting surface of each reflector is profiled, and the main part of the surface is inclined with respect to a direction parallel to the longitudinal direction of the reflector.

3. An elongated luminaire as claimed in claim 2, wherein the surface of the reflectors is undulated in the longitudinal direction of the luminaire.

4. An elongated luminaire as claimed in claim 1, wherein the reflecting surface of each of the reflectors diverge with respect to each other at an angle between 0°

and 60°

.

5. An elongated luminaire as claimed in claim 1, wherein the reflecting surface of each of the reflectors extends substantially in a plane parallel to the plane of symmetry through the array of LEDs.

6. An elongated luminaire as claimed in claim 1, wherein the distance between the base plate and the edge of the reflector facing away from the base plate is at least three quarters of the length of the LEDs.

7. An elongated luminaire as claimed in claim 1, wherein the distance between the base plate and the edge of the reflector facing away from the base plate is substantially equal to the length of the LEDs.

8. An elongated luminaire as claimed in claim 1, further comprising a transparent cover plate disposed at the side of the luminaire opposite to the base plate, interconnecting the edges of the reflectors facing away from the base plate.

9-10. -10. (canceled)