Fluorescent light power source for supplying power to an external device
First Claim
1. A power source of a fluorescent light configured for supplying power to an external device, comprising:
- a fluorescent ballast for receiving an input voltage via an input line and converting said input voltage to a lamp voltage suitable for illuminating a fluorescent lamp and an external device voltage suitable for powering an external device;
a first output line electrically connecting the fluorescent ballast to connectors within a light fixture for outputting the lamp voltage from the fluorescent ballast to the connectors; and
a second output line electrically connecting the fluorescent ballast to a power port for outputting the external device voltage from the fluorescent ballast to the power port.
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Accused Products
Abstract
Systems and methods are provided for deriving power for an external device from the power source of a fluorescent light. The power source includes a fluorescent ballast electrically connected to the connectors of a light fixture for receiving an input voltage and for converting the input voltage to a lamp voltage suitable for powering a fluorescent lamp. The fluorescent ballast may be modified to include an output line that outputs a voltage for powering the external device to a power port. The power port may be mounted on or near the fluorescent light. Alternatively, the power port may be integrated within a housing that contains one of the connectors of the light fixture. The ballast may be further modified to include an output line for extracting network data and control signals from the power line carrier signals on the input voltage.
32 Citations
20 Claims
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1. A power source of a fluorescent light configured for supplying power to an external device, comprising:
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a fluorescent ballast for receiving an input voltage via an input line and converting said input voltage to a lamp voltage suitable for illuminating a fluorescent lamp and an external device voltage suitable for powering an external device; a first output line electrically connecting the fluorescent ballast to connectors within a light fixture for outputting the lamp voltage from the fluorescent ballast to the connectors; and a second output line electrically connecting the fluorescent ballast to a power port for outputting the external device voltage from the fluorescent ballast to the power port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A power source of a fluorescent light configured for supplying power to an external device, comprising:
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a fluorescent ballast for receiving an input voltage via an input line and converting said input voltage to a lamp voltage suitable for illuminating a fluorescent lamp and an external device voltage suitable for powering an external device; a first output line electrically connecting the fluorescent ballast to connectors within a light fixture for outputting the lamp voltage from the fluorescent ballast to the connectors; a second output line electrically connecting the fluorescent ballast to a power port for outputting the external device voltage from the fluorescent ballast to the power port; and wherein the power port is integrated within a housing that contains one of the connectors. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A method of deriving power for an external device from a power source of a fluorescent light, comprising:
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receiving input voltage at a fluorescent ballast, the input voltage comprising power line carrier signals; separating the power line carrier signals from the input voltage; converting the input voltage to a lamp voltage suitable for illuminating a fluorescent lamp and to an external device voltage suitable for powering the external device; outputting the lamp voltage from the fluorescent ballast to connectors within a light fixture; and outputting the external device voltage from the fluorescent ballast to a power port electrically connected to the external device. - View Dependent Claims (18, 19, 20)
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Specification