Circular LED panel light

• US 7,771,085 B2
• Filed: 01/15/2008
• Issued: 08/10/2010
• Est. Priority Date: 01/16/2007
• Status: Expired due to Fees

• Current Assignee: LED Folio Corporation
• Original Assignee: LED Folio Corporation
• Inventors: Kim, Steven
• Primary Examiner(s): Lee; Gunyoung T
• Application Number:
  US12/007,743
• Publication Number:
  US 20080170398A1
• Time in Patent Office: 938 Days
• Field of Search: 362/285, 362/286, 362/287, 362/288, 362/296, 362/346, 362/365, 362/366, 362/148, 362/147, 362/249.02, 362/249.03, 362/249.04, 313/292
• US Class Current: 362/285
• CPC Class Codes: F21K 9/23 Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
• CPC Class Codes: F21V 17/02 with provision for adjustment F21V17/04 - F21V17/08 take precedence
• CPC Class Codes: F21V 17/14 Bayonet-type fastening
• CPC Class Codes: F21V 21/002 making direct electrical contact, e.g. by piercing F21V21/35 takes precedence
• CPC Class Codes: F21V 21/03 Ceiling bases, e.g. ceiling roses F21V21/04 takes precedence
• CPC Class Codes: F21V 21/14 Adjustable mountings
• CPC Class Codes: F21V 21/22 telescopic
• CPC Class Codes: F21V 21/32 Flexible tubes
• CPC Class Codes: F21V 23/02 the elements being transformers, impedances or power supply units, e.g. a transformer with a rectifier
• CPC Class Codes: F21V 23/06 the elements being coupling devices , e.g. connectors
• CPC Class Codes: F21Y 2103/33 annular
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01R 33/94 Holders formed as intermediate parts for linking a counter-part to a coupling part
• CPC Class Codes: H01R 33/9453 for screw type coupling devices
• CPC Class Codes: H05B 45/30 Driver circuits
• CPC Class Codes: H05B 45/357 specially adapted for retrofit LED light sources
• CPC Class Codes: H05B 45/50 responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
• CPC Class Codes: Y02B 20/00 Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

A lighting device comprising: a light emitting diode lighting panel having first and second opposing surfaces; light emitting diodes at a periphery of light emitting diode lighting panel for emitting light through the first surface; a reflective surface at the second surface of the light emitting diode lighting panel; and a power supply unit connected to the light emitting diode panel, the power supply having first and second ends, and electrical circuitry for converting alternating current to direct current between the first and second ends, wherein the first end is for insertion into the a socket.

Claims

1. A lighting device comprising:

a light emitting diode lighting panel having first and second opposing surfaces;

light emitting diodes at a periphery of light emitting diode lighting panel for entering light into an incident surface and emitting the light through the first surface;

a reflective surface at the second surface of the light emitting diode lighting panel; and

a power supply unit connected to the light emitting diode panel, the power supply having first and second ends, and electrical circuitry for converting alternating current to direct current between the first and second ends,

wherein the first end is for insertion into a socket for one of an incandescent and fluorescent light bulb, and the light emitting diode lighting panel is adjustably connected to the second end of the power supply unit.

2. The lighting device of claim 1, further comprising:

a first connector attached to the second surface of the light emitting diode lighting panel; and

a second connector for reversibly connecting the power supply to the light emitting diode lighting panel and for attachment to the second end of the power supply unit.

3. The lighting device of claim 1 wherein the light emitting diode lighting panel includes a flexible strip of light emitting diodes and a light guide panel.

4. The lighting device of claim 1, further comprising a knob and a groove wherein the distance between the first end of the power supply and the light emitting diodes is adjusted by sliding the knob in groove.

5. The lighting device of claim 4, wherein the light guide panel has a convex surface.

6. A lighting device comprising:

a light emitting diode lighting panel having first and second opposing surfaces;

light emitting diodes arranged at a periphery of the light emitting diode lighting panel for entering light into an incident surface and emitting the light through the first surface;

a reflective surface on the second surface of the light emitting diode lighting panel;

a power supply unit for the light emitting diode panel containing electrical circuitry for converting alternating current to direct current, and the power supply unit having first and second ends; and

a flexible attachment piece attached to the second end of the power supply for redirecting the light emitting diode lighting panel, and the first end is a socket for one of an incandescent and fluorescent light bulb.

7. The lighting device of claim 6, further comprising:

a first connector attached to the second surface of the light emitting diode lighting panel; and

a second connector for reversibly connecting the power supply to the light emitting diode lighting panel and for attachment to the second end of the power supply unit.

8. The lighting device of claim 6, wherein the light emitting diode lighting panel includes a flexible strip of light emitting diodes and a light guide panel.

9. The lighting device of claim 6, further comprising a knob and a groove wherein the distance between the first end of the power supply and the light emitting diodes is adjusted by sliding the knob in groove.

10. The lighting device of claim 9, wherein the light guide panel has a convex surface.

11. A lighting device for insertion into a can having an opening, comprising:

a light emitting diode lighting panel having first and second opposing surfaces;

light emitting diodes arranged at a periphery of the first surface of the light emitting diode lighting panel for entering light into an incident surface and emitting the light through the first surface;

a reflective surface on the second surface of the light emitting diode lighting panel; and

a power supply unit for the light emitting diode panel containing electrical circuitry to convert alternating current to direct current, and the power supply unit having first and second ends, wherein;

the first end of the power supply has a first cross-sectional width and fits into a socket for one of an incandescent and fluorescent light bulb, and the light emitting diode panel has a second width greater than four times the first cross-sectional width of the first end of the power supply unit and is adjustably connected to the second end of the power supply unit.

12. The lighting device of claim 11, wherein the light emitting diode lighting panel is affixed to a side of the can via a spring.

13. The lighting device of claim 11, wherein the lighting device further includes a flexible attachment piece that attaches the second end of the power supply to the light emitting diode lighting panel.

14. The lighting device of claim 11, wherein the lighting device further includes:

a first connector attached to the second surface of the light emitting diode lighting panel; and

a second connector for reversibly connecting the power supply to the light emitting diode lighting panel and for attaching to the second end of the power supply unit.

15. The lighting device of claim 11, wherein the light emitting diode lighting panel includes a flexible strip of light emitting diodes and a light guide panel.

16. The lighting device of claim 11, further comprising a knob and a groove wherein the distance between the first end of the power supply and the light emitting diodes is adjusted by sliding the knob in groove.

17. The lighting device of claim 16 wherein the light guide panel has a convex surface.