Extended life LED fixture with distributed controller and multi-chip LEDs
First Claim
Patent Images
1. An LED driver, comprising:
- circuitry for driving a subset of LEDs within at least one multi-chip LED package; and
a controller for activating and deactivating the circuitry, wherein the controller monitors an operating parameter of the LED driver and once the operating parameter of the LED driver satisfies a predetermined value, then the controller deactivates the circuitry and sends a signal to a second LED driver that causes the second LED driver to activate a second subset of LEDs within the at least one multi-chip LED package associated with the second LED driver,wherein the LED driver, the second LED driver, and the at least one multi-chip LED package are within a single light fixture.
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Abstract
An LED fixture includes multiple LED drivers and a multi-chip LED package so that the lifetime of the fixture is a multiple of the lifetime of a conventional fixture that uses only a single LED driver. A distributed controller activates and deactivates the LED drivers so that different subsets of LEDs within the LED package are driven sequentially. An optional multi-chip LED driver concurrently drives multiple subsets of LEDs that were previously driven by the LED drivers.
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Citations
20 Claims
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1. An LED driver, comprising:
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circuitry for driving a subset of LEDs within at least one multi-chip LED package; and a controller for activating and deactivating the circuitry, wherein the controller monitors an operating parameter of the LED driver and once the operating parameter of the LED driver satisfies a predetermined value, then the controller deactivates the circuitry and sends a signal to a second LED driver that causes the second LED driver to activate a second subset of LEDs within the at least one multi-chip LED package associated with the second LED driver, wherein the LED driver, the second LED driver, and the at least one multi-chip LED package are within a single light fixture. - View Dependent Claims (2, 3, 4, 5)
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6. A single light fixture, comprising:
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a plurality of LED drivers, wherein each LED driver includes a controller and at least one of the LED drivers is connected to at least one other LED driver; and a plurality of subsets of LEDs within at least one multi-chip LED package, wherein each subset of LEDs is connected to a distinct LED driver; wherein each of the controllers of the at least one LED driver is operable to; in response to a received signal, activate its corresponding LED driver so that the subset of LEDs associated with the LED driver is activated; monitor an operating parameter of the LED driver to determine when the operating parameter satisfies a predetermined value; and once the LED driver satisfies the predetermined value, deactivate the LED driver so that the subset of LEDs associated with the LED driver is deactivated and transmit a signal to the other LED driver. - View Dependent Claims (7, 8)
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9. A method for controlling a plurality of LED drivers within a single light fixture, comprising:
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activating, by a first LED driver, a first subset of LEDs within at least one multi-chip LED package; monitoring, by a first controller associated with the first LED driver, an operating parameter of the first LED driver; once the operating parameter satisfies a predetermined value, deactivating the first LED driver and the first subset of LEDs and transmitting, by the first controller, a signal to a second LED controller associated with a second LED driver; in response to receiving the signal, activating, by the second LED driver, a second subset of LEDs within the at least one multi-chip LED package; wherein the first LED driver is distinct from the second LED driver, the first subset of LEDs is distinct from the second subset of LEDs, and the first controller is distinct from the second controller; and wherein the first LED driver, the second LED driver, and the at least one multi-chip LED package are within the single light fixture. - View Dependent Claims (10, 11, 12, 13, 14, 15, 20)
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16. A method for controlling a plurality of LED drivers within a single light fixture, comprising:
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activating, by a first LED driver, a first subset of LEDs within at least one multi-chip LED package; monitoring, by a first controller associated with the first LED driver, light intensity output by the first subset of LEDs; once the light intensity satisfies a predetermined value, deactivating the first LED driver and the first subset of LEDs and transmitting, by the first controller, a signal to a second LED controller associated with a second LED driver; in response to receiving the signal, activating, by the second LED driver, a second subset of LEDs within the at least one multi-chip LED package; wherein the first LED driver is distinct from the second LED driver, the first subset of LEDs is distinct from the second subset of LEDs, and the first controller is distinct from the second controller; and wherein the first LED driver, the second LED driver, and the at least one multi-chip LED package are within the single light fixture. - View Dependent Claims (17, 18, 19)
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Specification