DIMMABLE OUTDOOR LUMINAIRES

• US 20120139426A1
• Filed: 12/03/2010
• Published: 06/07/2012
• Est. Priority Date: 12/03/2010
• Status: Abandoned Application

• Current Assignee: General Electric Company
• Original Assignee: General Electric Company
• Inventors: Ilyes, Laszlo Sandor, Cosby, Melvin C. Jr., Creighton, Jason D., Prasad, Himamshu
• Application Number:
  US12/959,921
• Publication Number:
  US 20120139426A1
• Time in Patent Office: Days
• US Class Current: 315/152
• 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 23/0442 activated by means of a sensor, e.g. motion or photodetectors
• CPC Class Codes: F21V 23/06 the elements being coupling devices , e.g. connectors
• CPC Class Codes: F21W 2131/10 Outdoor lighting
• CPC Class Codes: H05B 47/11 by determining the brightness or colour temperature of ambient light
• CPC Class Codes: H05B 47/115 by determining the presence or movement of objects or living beings
• CPC Class Codes: H05B 47/185 via power line carrier transmission
• CPC Class Codes: H05B 47/19 via wireless transmission
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

A dimmable outdoor lighting fixture apparatus is provided with a dimmable ballast or driver mounted in a horizontal cobra head luminaire fixture, and a photo eye control module connected to the fixture by an EEI/NEMA standard 3-terminal polarized twist-lock receptacle mounted to the fixture housing, with the controller module providing a dimming control value to the ballast or driver through the twist-lock receptacle.

Claims

1. A dimmable outdoor lighting fixture apparatus, comprising:

a luminaire fixture assembly comprising;

a fixture housing,

at least one light source supported in the fixture housing,

at least one ballast or driver supported in the fixture housing and electrically coupled to provide power to the light source, and

a 3-terminal twist-lock receptacle mounted to the fixture housing and operative to receive a twist-lock connector;

a controller module, comprising;

a twist-lock type connector operatively coupled to the twist-lock receptacle and providing three class 1 electrical connections between the controller module and the fixture assembly, and

a dimming component operative to selectively provide at least one dimming control value to the ballast or driver through the twist-lock receptacle to cause the ballast or driver to provide dimmable output from the light source.

2. The apparatus of claim 1, where the controller module further comprises a photo sensor operative to sense ambient light proximate the fixture assembly and to provide a sensed light signal or value to the dimming component, and where the dimming component is operative to selectively provide the dimming control value based at least in part on the sensed light signal or value.

3. The apparatus of claim 1, where the dimming component is operative to selectively provide the dimming control value based at least in part on a sensed motion light signal or value from a motion sensor.

4. The apparatus of claim 1, where the dimming component is operative to selectively provide the dimming control value based at least in part on a received RF signal or value from an external RF device.

5. The apparatus of claim 1, where the ballast or driver comprises a power line communication (PLC) component operative to receive digital signals from a power line via the twist-lock receptacle, and where the controller module comprises a power line communication (PLC) component operatively coupled with the dimming component to transmit the dimming control value as a digital signal on the power line.

6. The apparatus of claim 1, where the fixture assembly comprises a power line communication (PLC) module operative to receive digital signals from a power line via the twist-lock receptacle and to provide an analog dimming signal to the ballast or driver based on the received digital signals, and where the controller module comprises a power line communication (PLC) component operatively coupled with the dimming component to transmit the dimming control value as a digital signal on the power line.

7. The apparatus of claim 1, where the ballast or driver is a phase-cut ballast or driver with a power circuit operative to receive a phase-cut power signal from a power line via the twist-lock receptacle and to selectively dim the output from the light source according to the phase-cut power signal, and where the controller module comprises a phase-cut switching device (PCS) operative to generate the phase-cut power signal based at least in part on the dimming control value from the dimming component.

8. The apparatus of claim 1, where the ballast or driver comprises a radio frequency (RF) receiver operative to receive a dimming control value from the controller module through the twist-lock receptacle, and where the controller module comprises a radio frequency (RF) transmitter operatively coupled with the dimming component to transmit the dimming control value as an RF signal through the twist-lock receptacle.

9. The apparatus of claim 1, where the fixture assembly comprises a radio frequency (RF) module operative to receive a dimming control value from the controller module through the twist-lock receptacle, and to provide an analog dimming signal to the ballast or driver based on the received dimming control value, and where the controller module comprises a radio frequency (RF) transmitter operatively coupled with the dimming component to transmit the dimming control value as an RF signal through the twist-lock receptacle.

10. The apparatus of claim 1, where the twist-lock receptacle is modified to include a fourth terminal, where the ballast or driver comprises at least two power inputs coupled with terminals of the twist-lock receptacle, the ballast or driver being operative to provide multi-level output from the light source according to power levels of the at least two power inputs, and where the controller module controls the power levels of the at least two power inputs through the twist-lock receptacle.

11. The apparatus of claim 1, where the twist-lock receptacle is modified to include a fourth terminal, where the fixture assembly comprises:

first and second light sources supported in the fixture housing;

a first ballast or driver comprising a first power input and being electrically coupled to selectively provide power to the first light source according to the first power input; and

a second ballast or driver comprising a second power input and being electrically coupled to selectively provide power to the second light source according to the second power input; and

where the controller module controls the power levels of the at least two power inputs through the twist-lock receptacle.

12. The apparatus of claim 1, where the twist-lock receptacle is modified to include a fourth terminal, where the light source is a high intensity discharge (HID) lamp, where the ballast or driver is a constant wattage autotransformer (CWA) HID ballast, where the fixture assembly comprises:

a relay having a coil circuit with at least one power input coupled with a terminal of the twist-lock receptacle; and

a capacitor coupled between a relay contact and a control terminal of the CWA HID ballast; and

where the controller module controls the power level of the at least one power input through the twist-lock receptacle to selectively cause the relay to couple the capacitor with the CWA HID ballast to provide dimmable output from the HID lamp.

13. The apparatus of claim 1, where the twist-lock receptacle is modified to include a fourth terminal, where the ballast or driver is a dimmable ballast or driver, where the fixture assembly comprises:

a relay having a coil circuit with at least one power input coupled with a terminal of the twist-lock receptacle; and

a resistor coupled between a relay contact and a control terminal of the dimmable ballast or driver; and

where the controller module controls the power level of the at least one power input through the twist-lock receptacle to selectively cause the relay to couple the resistor with the dimmable ballast or driver to provide dimmable output from the light source.

14. The apparatus of claim 1, where the twist-lock receptacle is modified to include a fourth opening with a pair of class 2 wires extending through the fourth opening, where the ballast or driver is a dimmable ballast or driver, and where the dimming component selectively provides the dimming control value to the ballast or driver through the twist-lock receptacle using the class 2 wires to cause the ballast or driver to provide dimmable output from the light source.

16. The apparatus of claim 1, where the controller module comprises a feedback circuit operative to sense at least one power condition, and where the dimming component is operative to selectively adjust the dimming control value based at least in part on the power condition.

17. The apparatus of claim 1, where the twist-lock receptacle includes a connector with first and second terminals with first and second wires coupled with the first and second terminals, respectively, where the ballast or driver is a dimmable ballast or driver, and where the dimming component selectively provides the dimming control value to the ballast or driver through the connector of the twist-lock receptacle using the first and second wires to cause the ballast or driver to provide dimmable output from the light source.

18. The apparatus of claim 17, where the first terminal is a cylindrical structure and where the first and second terminals are coaxial relative to one another.

19. The apparatus of claim 18, where the connector is located at the center of the twist-lock receptacle.

20. The apparatus of claim 17, where the connector is located at the center of the twist-lock receptacle.

15. The apparatus of claim where the twist-lock receptacle includes an optical channel for transmission of optical signals through the twist-lock receptacle, where the ballast or driver comprises an optical receiver operative to receive a dimming control value from the controller module through the optical channel of the twist-lock receptacle, and where the controller module comprises an optical transmitter operatively coupled with the dimming component to transmit the dimming control value as an optical signal through the optical channel of the twist-lock receptacle.

21. A method of operating an outdoor lighting fixture, the method comprising:

providing at least one light source and at least one ballast or driver in a luminaire fixture housing;

providing a controller module attached to the fixture housing and coupled with the ballast or driver; and

providing at least one dimming control value to the ballast or driver from the controller module through the twist-lock receptacle to cause the ballast or driver to provide dimmable output from the light source.

22. The method of claim 21, further comprising:

sensing ambient light proximate the fixture assembly; and

providing the dimming control value based at least in part on the sensed ambient light.

23. The method of claim 21, further comprising:

sensing motion proximate the fixture assembly; and

providing the dimming control value based at least in part on the sensed motion.

24. The method of claim 21, further comprising:

receiving an RF signal or value from an external RF device; and

providing the dimming control value based at least in part on the received RF signal or value.

25. The method of claim 21, where the dimming control value is provided based at least in part on a current time.

26. A dimmable outdoor lighting fixture apparatus, comprising:

a luminaire fixture assembly comprising;

a fixture housing comprising a socket mounting structure with a hole adapted to receive a twist-lock receptacle,

at least one light source supported in the fixture housing, and

at least one ballast or driver supported in the fixture housing and electrically coupled to provide power to the light source; and

a controller module, comprising;

a controller housing with a controller mounting structure mounted to the socket mounting structure,

a plurality of wires extending from an interior of the controller housing through the fixture housing hole into the fixture housing, and

a dimming component located in the controller housing and operative to selectively provide at least one dimming control value to the ballast or driver via at least one of the plurality of wires to cause the ballast or driver to provide dimmable output from the light source.