Power failure reporting in a networked light

• US 8,456,090 B2
• Filed: 09/27/2012
• Issued: 06/04/2013
• Est. Priority Date: 01/04/2011
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Greenwave Reality, Pte Ltd. (Greenwave Reality, Inc.)
• Inventors: Jonsson, Karl
• Primary Examiner(s): Le, Tung X
• Application Number:
  US13/628,185
• Publication Number:
  US 20130020943A1
• Time in Patent Office: 250 Days
• Field of Search: 315/86, 315/88, 315/90, 315/129, 315/291, 315/294, 315/297, 315/307, 315/312, 315/318
• US Class Current: 315/129
• 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: F21S 9/022 Emergency lighting devices
• CPC Class Codes: F21V 3/00 Globes; Bowls; Cover glasses with refracting properties F21V5/00; with reflecting properties F21V7/00; characterised by cooling arrangements F21V29/506
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H05B 47/19 via wireless transmission

Abstract

Power is stored in a networked light allowing the networked light to send a message over the network providing information that the networked light is turning off if external power is no longer available.

Claims

1. An article of manufacture comprising a non-transitory storage medium having instructions stored thereon that, if executed, result in:

detecting that an external power source has stopped providing power to a networked lighting apparatus;

turning off a light emitting element in response to said detection; and

sending a network message from the networked lighting apparatus in response to said detection, said network message comprising data indicating that the networked lighting apparatus is entering an off state.

2. The article of manufacture as claimed in claim 1, wherein the instructions, if executed, further result in:

receiving power from an energy storage device in the networked lighting apparatus while said network message is sent.

3. The article of manufacture as claimed in claim 1, wherein the instructions, if executed, further result in sending said network message more than once.

4. The article of manufacture as claimed in claim 1, wherein the instructions, if executed, further result in sending said network message over a radio frequency network.

5. The article of manufacture as claimed in claim 1, wherein the instructions, if executed, further result in:

sending a command over the network to change a state of another networked device.

6. The article of manufacture as claimed in claim 1, wherein the instructions, if executed, further result in:

receiving a message over the network including information about an on-off state of another light emitting device; and

turning off the light emitting element in response to said information.

7. A controller comprising:

at least one output capable to control an on/off state of a light emitting device;

at least one input capable to receive a power fail indication;

a network interface; and

circuitry coupled to the network interface, the at least one output, and the at least one input, and configured to;

detect the power fail indication on the at least one input,

turn off the light emitting device using the at least one output; and

send a message over a network to indicate that the light emitting device is entering an off state.

8. The controller of claim 7, wherein the circuitry is further configured to receive power from an energy storage device in the networked lighting apparatus while said message is sent.

9. The controller of claim 7, wherein the controller comprises a single integrated circuit that includes said at least one output, said at least one input, said network interface, and said circuitry.

10. The controller of claim 7, wherein the circuitry comprises:

a microprocessor; and

memory coupled to the microprocessor and having instructions stored thereon, the instructions that, if executed by the microprocessor, result in;

the detection of the power fail indication on the at least one input,

the turning off of the light emitting device using the at least one output; and

the sending of the message over the network to indicate that the light emitting device is entering the off state.

11. The controller of claim 7, wherein the circuitry is further configured to receive power from an energy storage device in the networked lighting apparatus while said message is sent.

12. The controller of claim 7, wherein the circuitry is further configured to send said message more than once.

13. The controller of claim 7, wherein the circuitry is further configured to send said message over a radio frequency network.

14. The controller of claim 7, wherein the circuitry is further configured to send a command over the network to change a state of another networked device.

15. The controller of claim 7, wherein the circuitry is further configured to control an LED driver circuit coupled to the at least one output.

16. The controller of claim 7, wherein the circuitry is further configured to control a fluorescent light driver circuit coupled to the at least one output.

17. A lighting apparatus comprising:

at least one light emitting element;

a networked controller to communicate over a network and to control an on/off state of the at least one light emitting element;

circuitry to detect a discontinuation of energy supplied from an external power connection and communicate the discontinuation to the networked controller; and

an energy storage device to store energy from the external power connection and provide power to the network controller;

wherein the network controller sends a message, over the network, indicating that the lighting apparatus is entering an off state in response to the discontinuation of the energy supplied from the external power connection.

18. The lighting apparatus of claim 17, wherein the at least one light emitting element comprises a fluorescent light.

19. The lighting apparatus of claim 18, wherein the fluorescent light comprises a coiled fluorescent light;

and

wherein the lighting apparatus is compliant with a mechanical specification of a light bulb standard selected from a group consisting of A19, A21, PAR30 and PAR38.

20. The lighting apparatus of claim 17, wherein the at least one light emitting element comprises a light emitting diode (LED).

21. The lighting apparatus of claim 17, further comprising:

an Edison screw base to make a connection to the external power connection; and

a shell connected to the base to cover the network interface, the energy storage device and the circuitry to detect the discontinuation of energy supplied from the external power connection;

wherein the lighting apparatus is compliant with a mechanical specification of a light bulb standard selected from a group consisting of A19, A21, PAR30 and PAR38.