MOVABLE LED TRACK LUMINAIRE

• US 20090279298A1
• Filed: 05/06/2009
• Published: 11/12/2009
• Est. Priority Date: 05/06/2008
• Status: Active Grant

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: FIEGENER, John, MIER-LANGNER, Alejandro
• Granted Patent: US 8,348,492 B2
• Time in Patent Office: Days
• US Class Current: 362/235
• CPC Class Codes: F21S 4/28 rigid, e.g. LED bars
• CPC Class Codes: F21V 17/105 using magnets
• CPC Class Codes: F21V 21/096 Magnetic devices
• CPC Class Codes: F21V 21/35 with direct electrical contact between the supporting element and electric conductors running along the guiding element
• CPC Class Codes: F21V 29/773 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21W 2131/301 for furniture
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01R 13/6205 Two-part coupling devices held in engagement by a magnet
• CPC Class Codes: H01R 25/147 Low voltage devices, i.e. safe to touch live conductors

Abstract

A magnetic track and lighting system is described. The present magnetic luminaire attaches to a track through magnetic connectors and provides easy mobility of the luminaires on the track without necessary mechanical attachment mechanisms. The magnetic luminaire incorporates the utilization of LED sources and provides in its design cooling and heat dissipation by the interface between the magnetic luminaire and the track.

Claims

1. A track and magnetic luminaire, comprising:

a track frame supporting a mounting bar and an electrical conductor, both said mounting bar and said electrical conductor extending longitudinally along the length of said track frame, said electrical conductor in electrical communication with a low voltage power supply adjacent to said track frame;

an insulator sleeve surrounding at least a portion of said electrical conductor and mounted within said track frame with said electrical conductor, said insulator sleeve exposing at least a portion of said electrical conductor;

a magnetic luminaire magnetically repositionable on said track frame, said magnetic luminaire having a first and a second contact, said first contact electrically contacting said electrical conductor of said track frame, said second contact of said magnetic luminaire contacting said track frame;

said magnetic luminaire further having at least one magnet in corresponding alignment with said mounting bar of said track frame to magnetically support said magnetic luminaire on said track frame;

said magnetic luminaire further having an LED light source, said LED light source in electrical communication with said first electrical contact of said magnetic luminaire;

said LED light source allowing heat dissipation and transfer from said LED light source to said magnetic luminaire, said magnetic luminaire having a heat sink housing allowing heat to be readily dissipated from said magnetic luminaire;

wherein said magnetic luminaire is separated from said track frame by a sufficient distance to allow air flow between said magnetic luminaire and said support bar and around said at least one magnet retained within said magnetic luminaire.

2. A magnetic track attachment for track style luminaires, comprising:

a track having a track frame retaining an electrical conductor and a support bar, said conductor electrically connected to a power supply;

a magnetic luminaire having an LED light source retained within a housing and in electrical conductive relationship with said power supply and said track frame;

said housing having at least one magnet magnetically attracted to said support bar and positioned on a rear surface of said housing, said rear surface of said housing additionally supporting a first and a second electrical contact;

said luminaire further having circuitry for driving said at least one LED and electrically connected to said first and second contacts;

wherein said at least one magnet positions said luminaire away from said track to provide an adequate cooling air gap to allow air to flow between said track and said luminaire and allowing said magnetic luminaire to be repositionable along said track in one of a plurality of positions.

3. The magnetic track attachment of claim 2 wherein said electrical conductor is partially surrounded by an insulator sleeve exposing the longitudinal arc section of said conductor and allowing contact with said first contact of said housing.

4. The magnetic track attachment of claim 2 wherein said LED light source is a separate light source retained within said housing and, interposed between said housing and said LED light source is a heat transfer agent allowing efficient heat transfer from said light source to said housing.

5. The magnetic track attachment of claim 2 including a radiused edge on said track frame to ensure direct contact between said second contact of said housing and said track frame.

6. The magnetic track attachment of claim 2 wherein said at least one magnet is a pair of spaced magnets positioned upon either end of a track receiving area on said rear surface of said housing.

7. The magnetic track attachment of claim 2 wherein said housing includes a contact spacing tab to separate said magnetic luminaire from said track frame.

8. The magnetic track attachment of claim 2 wherein said magnetic luminaire circuitry includes a built-in driver to drive said LED.

9. The magnetic track attachment of claim 2 wherein said housing has a plurality of cooling fins adjacent said track frame.

10. A magnetic puck style track luminaire for use with a track lighting system, comprising:

a track frame retaining an electrical conductor along said track substantially surrounded by an insulative sleeve and exposing a longitudinal arc shaped length of said conductor;

a metalized support bar affixed within said track frame;

a puck style luminaire having a light source maintained within a housing, said housing having a track engagement surface extending along the length of a rear face of said puck style luminaire;

said track engagement surface including a first and a second electrical contact to engage said track frame along separate sections, a first section being said electrical conductor, a second section being said track frame;

at least one magnet retained within said track engagement surface to magnetically contact said support bar.

11. The magnetic puck style track luminaire of claim 10 wherein said light source is an LED style light source fittingly retained within an opening of said housing.

12. The magnetic puck style luminaire of claim 11 further including a heat transfer agent interposed between said LED style light source and said housing to allow for the efficient transfer of heat from said LED style light source to said housing.

13. The magnetic puck style track luminaire of claim 10 wherein said puck style luminaire is suspended away from said track a sufficient distance to allow air to flow between said track and said puck style luminaire.

14. The magnetic puck style track luminaire of claim 12 wherein said housing has a plurality of cooling fins radially extending along said track engagement surface of said luminaire housing.

15. The magnetic puck style track luminaire of claim 10 wherein said second electrical contact is directly adjacent a radiused edge of said track frame.

16. A low voltage magnetic LED track luminaire, comprising:

a low voltage track having a track frame supporting a low voltage electrical conductor;

at least one LED style luminaire magnetically affixable to said track frame having a housing and a first and second electrical contact, said first contact in electrical communication with said conductor and said second contact in electrical communication with a neutral surface of said track frame;

said luminaire having at least one LED covered by a lens housed within said luminaire, said at least one LED powered by said electrical conductor of said track frame;

a low voltage power supply in remote connection to said low voltage electrical conductor of said track frame;

wherein said luminaire is held in place on said track frame by magnetic attraction, said magnetic attraction sufficient to retain said luminaire on said track frame and also sufficient to maintain said first electrical contact in contact with said conductor and said second electrical contact in contact with said track frame.

17. The low voltage luminaire of claim 16 wherein said track frame supports a magnet to attract said luminaire.

18. The low voltage luminaire of claim 16 wherein said luminaire supports at least one magnet to attach said luminaire to a metal support bar mounted within said track frame.