ILLUMINATION DEVICE COMPRISING AN INTERNAL POWER SOURCE AND AN INTERFACE FOR CONNECTING THE ILLUMINATION DEVICE TO AN EXTERNAL POWER SUPPLY

• US 20120106123A1
• Filed: 06/11/2010
• Published: 05/03/2012
• Est. Priority Date: 06/17/2009
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips N.V.
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Treurniet, Theodoor Cornelis
• Application Number:
  US13/379,039
• Publication Number:
  US 20120106123A1
• Time in Patent Office: Days
• US Class Current: 362/20
• CPC Class Codes: F21S 6/004 with a lamp housing in direct contact with the floor or ground
• CPC Class Codes: F21S 9/02 the power supply being a battery or accumulator
• CPC Class Codes: F21V 17/14 Bayonet-type fastening
• CPC Class Codes: F21V 19/04 with provision for changing light source, e.g. turret auxiliary devices for cleaning, placing, or removing incandescent lamps H01K3/32, fluorescent lamps H01J9/006
• 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: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

An illumination device comprising: at least one light emitting device (106); an internal power source (208); an electrical interface (112) for electrically connecting said illumination device to an external power supply (210); a thermal interface (114) for thermally connecting said illumination device to an external heat sink (121); and a circuitry for operating said illumination device in a first mode when disconnected from at least one of said external power supply (210) and said external heat sink (121), in which first mode said at least one light emitting device (106) is powered by said internal power source (208), and in a second mode when said illumination device is connected to said external power supply (210) and said external heat sink (121), in which second mode said at least one light emitting device (106) is powered by said external power supply (210), and wherein a first maximum luminance in said first mode is restricted relative a second maximum luminance in said second mode.

Claims

1. An illumination device comprising:

at least one light emitting device;

an internal power source;

an electrical interface for electrically connecting said illumination device to an external power supply;

a thermal interface for thermally connecting said illumination device to an external heat sink; and

a circuitry for operating said illumination device in a first mode when disconnected from at least one of said external power supply and said external heat sink, in which first mode said at least one light emitting device is powered by said internal power source, and in a second mode when said illumination device is connected to said external power supply and said external heat sink, in which second mode said at least one light emitting device is powered by said external power supply, and wherein a maximum luminance of said illumination device in said first mode is restricted relative a maximum luminance of said illumination device in said second mode.

2. An illumination device according to claim 1, wherein a selector is arranged to switch between said first mode and said second mode.

3. An illumination device according to claim 1, wherein the circuitry is configured in such a way that said at least one light emitting device is operated at a higher power when said illumination device is operated in said second mode than when said illumination device is operated in said first mode.

4. An illumination device according to claim 1, comprising a plurality of light emitting devices, wherein said circuitry is configured in such a way that more light emitting devices are activated when said illumination device is operated in said second mode than when said illumination device is operated in said first mode.

5. An illumination device according to claim 1, wherein said circuitry is configured to enable charging of said internal power source when said illumination device is electrically connected to said external power supply.

6. An illumination device according to claim 1, wherein the electrical interface is configured to transfer electrical energy via direct electrical contact.

7. An illumination device according to claim 1, wherein said electrical interface and said thermal interface are provided in a plug.

11. An illumination system (100) comprising an illumination device according to claim 1, and an interfacing device, comprising

a power supply;

a heat sink;

an electrical interface for electrically connecting said power supply to said illumination device adapted to operate in a first mode when disconnected from said interfacing device and a second mode when connected to said interfacing device, wherein a first maximum luminance in said first mode is restricted relative a second maximum luminance in said second mode; and

a thermal interface for thermally connecting said heat sink to said illumination device.

8. An interfacing device comprising:

a power supply;

a heat sink;

an electrical interface for electrically connecting said power supply to an illumination device adapted to operate in a first mode when disconnected from said interfacing device and a second mode when connected to said interfacing device, wherein a first maximum luminance in said first mode is restricted relative a second maximum luminance in said second mode; and

a thermal interface for thermally connecting said heat sink to said illumination device.

9. An interfacing device according to claim 8, wherein said electrical interface and said thermal interface are provided in a socket.

10. An interfacing device according to claim 8, wherein said power supply is adapted to receive its electrical energy from a mains supply.