Lighting system with removable light modules

• US 7,806,569 B2
• Filed: 09/28/2007
• Issued: 10/05/2010
• Est. Priority Date: 09/28/2007
• Status: Active Grant

• Current Assignee: ABL IP Holding LLC (Acuity Brands, Inc.)
• Original Assignee: OSRAM Sylvania Inc. (Ams-Osram AG)
• Inventors: Mitchell, John D. Jr., Sanroma, John P.
• Primary Examiner(s): HAN, JASON
• Application Number:
  US11/904,742
• Publication Number:
  US 20090086478A1
• Time in Patent Office: 1,103 Days
• Field of Search: 362/398
• US Class Current: 362/398
• CPC Class Codes: A47F 3/001 Devices for lighting, humidifying, heating, ventilation
• CPC Class Codes: F21S 2/00 Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
• CPC Class Codes: F21S 2/005 of modular construction
• CPC Class Codes: F21S 8/038 intended to be mounted on a light track suspended from a light track F21S8/066; details of supporting elements displaceable along a guiding element F21V21/34
• CPC Class Codes: F21S 8/066 from a light track details of supporting elements displaceable along a guiding element F21V21/34
• 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 25/04 breaking the electric circuit
• CPC Class Codes: F21V 29/70 characterised by passive heat-dissipating elements, e.g. heat-sinks
• CPC Class Codes: F21W 2131/405 for shop-windows or displays
• 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 lighting system with removable light modules mounted on a frame by an attractive force between magnetic material of the light module and magnetic material of the frame such that a light module may be installed on, removed from, or relocated on the frame manually without tools or permanent electrical connection. The frame may be one-, two-, or three-dimensional, and it may provide an aesthetic appearance even when the lighting system is not illuminated. The light modules may employ incandescent, quartz-halogen, LED, or fluorescent light sources. Particularly, in LED embodiments, the magnetic materials serve the dual functions of mounting and heat sinking. The lighting system may be utilized as a sign, signaling device, or a building block in larger lighting systems. The lighting system has a wide variety of applications and provides a user with improved ability to control the quantity, direction, and characteristics of the emitted light.

Claims

1. A lighting system with removable light modules comprising:

(a) a frame having a substantially flat surface, said frame including a magnetic material and first and second electrically conductive channels mounted on said surface such that said channels are electrically isolated from each other;

(b) a light module comprising an LED light source having sufficient lumen output for use in general lighting applications mounted on a base, said base having a top surface and a substantially flat bottom surface with a dielectric coating covering said top and bottom surfaces and a magnetic material between said top and bottom surfaces, first and second electrically conductive paths mounted on said top dielectric surface such that said paths are electrically isolated from each other, said LED light source having first and second electrically conductive lead-in wires electrically connected to said first and second paths, respectively, and said magnetic material of said base and said magnetic material of such frame providing adequate heat-sink means for the thermal operating requirements of said LED light source; and

(c) said light module being mounted on said frame with said substantially flat bottom surface of said light module facing said substantially flat surface of said frame, said first path of said light module being in electrical contact with said first channel of said frame and electrically isolated from said second channel, said second path of said light module being in electrical contact with said second channel of said frame and electrically isolated from said first channel, said light module being securely mounted on said frame by means of a magnetic attractive force acting between said magnetic material of said light module and said magnetic material of said frame and such that said magnetic attractive force permits said light module to be manually removed from said frame.

2. A lighting system as described in claim 1 wherein said first and second electrically conductive paths of said light module are thin electrically conductive strips.

3. A lighting system as described in claim 1 wherein said substantially flat surface of said frame has a dielectric coating thereon and said first and second channels are mounted on said dielectric coating of said frame.

4. A lighting system as described in claim 1 wherein said frame includes means for insuring proper electrical polarity between said first and second electrically conductive channels of said frame and said first and second electrically conductive paths of said base of said light module.

5. A lighting system as described in claim 1 wherein said lighting system includes a plurality of light modules mounted on said frame.

6. A lighting system as described in claim 1 wherein said lighting system includes a plurality of electrically conductive channel pairs.

7. A lighting system as described in claim 1 wherein said frame has a substantially three-dimensional shape.

8. A lighting system as described in claim 1 wherein said light module emits colored light.

9. A lighting system as described in claim 1 wherein said lighting system includes an electrical control device servicing said module, said electrical control device being located within the body of said frame.

10. A lighting system as described in claim 1 wherein said lighting system includes first and second LEDs and the polarity of the first LED is opposite to that of the second LED.

11. A lighting system with removable light modules comprising:

(a) a frame having a substantially flat surface, said frame including a magnetic material and first and second electrically conductive channels mounted on said surface;

(b) a light module comprising a light source mounted on a base, said base having a substantially flat surface, said base including a magnetic material and first and second electrically conductive paths, said light source having first and second lead-in wires electrically connected to said first and second electrically conductive paths of said base;

(c) said light module being mounted on said frame with said substantially flat surface of said light module facing said substantially flat surface of said frame and said first path of said light module being in electrical contact with said first channel of said first frame and electrically isolated from said second channel and said second path of said light module being in electrical contact with said second channel of said second frame and electrically isolated from said first channel such that said light module is securely mounted on said frame by means of a magnetic attractive force acting between said magnetic material of said light module and said magnetic material of said frame and such that said magnetic attractive force permits said light module to be manually removed from said frame; and

a housing enclosing said frame and said light module, said housing including an openable light-transmissive cover that when closed prevents access to said first and second electrically conductive channels and a kill switch responsive to the position of said cover such that the electrical power flowing through said channels is shut off when said cover is open.

12. A lighting system as described in claim 11 wherein said light source is a fluorescent lamp.