LED LAMP FAILURE ALERTING SYSTEM
First Claim
1. An LED lamp with failure alerting system comprising:
- an LED lighting unit comprising at least one LED and a circuit board;
a photodetector configured to detect an actual light output from at least one LED;
a regulator configured to receive a signal from the photodetector when the actual light output is below a target light output and to increase current to the at least one LED to maintain the target light output;
a thermal sensor configured to sense an operating temperature of the at least one LED, wherein the regulator is further configured to receive a thermal signal from the thermal sensor and to maintain the current and the target light output such that the operating temperature does not exceed a target temperature; and
a low light output indicator configured to receive a signal from the photodetector when the actual light output remains below the target light output and to produce a low light output signal.
2 Assignments
0 Petitions
Accused Products
Abstract
Disclosed herein are embodiments of failure alerting systems for LED lamps and LED lamps having the same. An illustrative failure alerting system comprises a photodetector configured to detect an actual light output from the at least one LED, a regulator configured to receive a signal from the photodetector when the actual light output is below a target light output and to increase a current to the at least one LED to maintain the target light output, and a low light output indicator configured to receive a signal from the photodetector when the actual light output remains below the target light output and to produce a low light output signal. A thermal sensor can also be included and configured to sense an operating temperature of the LED and to control the regulator to increase the current and the target light output to ensure the operating temperature does not exceed the target temperature.
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Citations
20 Claims
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1. An LED lamp with failure alerting system comprising:
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an LED lighting unit comprising at least one LED and a circuit board; a photodetector configured to detect an actual light output from at least one LED; a regulator configured to receive a signal from the photodetector when the actual light output is below a target light output and to increase current to the at least one LED to maintain the target light output; a thermal sensor configured to sense an operating temperature of the at least one LED, wherein the regulator is further configured to receive a thermal signal from the thermal sensor and to maintain the current and the target light output such that the operating temperature does not exceed a target temperature; and a low light output indicator configured to receive a signal from the photodetector when the actual light output remains below the target light output and to produce a low light output signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An LED failure alerting system for use with LED lighting fixtures having at least one LED comprising:
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a photodetector configured to detect an actual light output from the at least one LED; a regulator configured to receive a signal from the photodetector when the actual light output is below a target light output and to increase a current to the at least one LED to maintain the target light output; a thermal sensor configured to sense an operating temperature of the at least one LED and to control the regulator to increase the current and the target light output to ensure the operating temperature does not exceed a target temperature; and a low light output indicator configured to receive a signal from the photodetector when the actual light output remains below the target light output and to produce a low light output signal. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. An LED failure alerting system for use with LED lighting fixtures having at least one LED comprising:
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a photodetector configured to detect an actual light output from the at least one LED; a regulator configured to receive a signal from the photodetector when the actual light output is below a target light output and to increase a current to the at least one LED to maintain the target light output; and a low light output indicator configured to receive a signal from the photodetector when the actual light output remains below the target light output and to produce a low light output signal. - View Dependent Claims (17, 18, 19, 20)
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Specification