LED lighting device with communications module and antenna
A LED lighting device includes LEDs operable to emit light when powered through an electrical path. The LED lighting device includes a housing and a communications module for wireless communication to and from the LED lighting device. An antenna for receives and transmits a wireless signal where the antenna comprises a slot in the housing. A power supply in the electrical path for providing power to the LEDs may be retained in the housing. The communications module may be retained in the housing with the power supply. The housing may form part of the LED lighting device structure such as a reflector surface.
1. A LED lighting device comprising:
at least one LED operable to emit light for general illumination when powered through an electrical path;
a driver module in the electrical path for providing power to the at least one LED;
an electronics housing retaining the driver module;
a communications module for enabling wireless communication to and/or from the LED lighting device, wherein the communications module is retained in the electronics housing;
an antenna operatively coupled to the communications module for receiving and/or transmitting a wireless signal, the antenna comprising a slot in the electronics housing.
2. The LED lighting device of claim 1 wherein the electronics housing forms part of a reflector surface.
3. The LED lighting device of claim 1 wherein the antenna is a cavity-backed antenna.
4. The LED lighting device of claim 1 wherein the slot comprises a linear slot.
5. The LED lighting device of claim 4 wherein the linear slot has a length significantly greater than its width.
6. The LED lighting device of claim 1 further comprising an external heat sink.
7. The LED lighting device of claim 1 wherein the slot comprises a plurality of slots.
8. The LED lighting device of claim 7 wherein a voltage source is applied across each of the plurality of slots to induce an E-field distribution within each of the plurality of slots.
9. The LED lighting device of claim 1 wherein the electronics housing is separately mounted to the lighting device.
10. The LED lighting device of claim 1 further comprising a support structure for securing the lighting device to a structure.
11. A LED lighting device comprising:
at least one LED operable to emit light when powered through an electrical path;
a reflector positioned to reflect at least a portion of the light emitted by the at least one LED;
lamp electronics in the electrical path for providing power to the at least one LED;
a housing;
a communications module for enabling wireless communication to and from the LED lighting device;
an antenna operatively coupled to the communications module for receiving and transmitting a wireless signal, the antenna comprising a slot in the reflector.
12. The LED lighting device of claim 11 wherein the lamp electronics are retained in the housing.
13. The LED lighting device of claim 11 wherein the housing forms part of a lamp housing.
14. The LED lighting device of claim 11 wherein the communications module is retained in the housing.
15. The LED lighting device of claim 11 wherein the reflector comprises a first portion that forms part of the antenna and a second portion that does not form part of the antenna.
16. The LED lighting device of claim 15 wherein the first portion is visually indistinguishable from the second portion.
17. The LED lighting device of claim 11 wherein the antenna is a cavity-backed antenna.
18. The LED lighting device of claim 11 wherein the antenna comprises a plurality of slots.
19. The LED lighting device of claim 11 wherein a voltage source is applied across the slot to induce an E-field distribution within the slot.
20. A LED lighting device comprising:
at least one LED operable to emit light for general illumination when powered through an electrical path;
lamp electronics in the electrical path for providing power to the at least one LED;
a housing for retaining the lamp electronics;
a communications module for enabling wireless communication to and/or from the LED lighting device;
an antenna for receiving and/or transmitting a wireless signal, the antenna comprising a slot in the housing;
electrical conductors in the electrical path extending from the housing for connecting the LED lighting device to a permanent source of power.
21. A LED lighting device comprising:
at least one LED operable to emit light for general illumination when powered through an electrical path;
a driver module in the electrical path for providing power to the at least one LED;
an electronics housing for retaining the driver module;
a communications module for enabling wireless communication to and/or from the LED lighting device;
an antenna for receiving and transmitting a wireless signal, the antenna comprising a slot in the electronics housing;
an electrical connector in the electrical path configured to be received in an electrical socket for delivering current to the driver module.