DIMMABLE LED LAMP AND DIMMING METHOD
First Claim
1. A dimmable light emitting diode (LED) lamp, comprising:
- an alternating current (AC) input unit;
at least one AC detection unit connected to the AC input unit;
at least one LED driving and power supply unit;
at least one LED light source assembly, wherein the LED driving and power supply unit is connected to the LED light source assembly; and
at least one controller with a pulse width modulation (PWM) output signal, wherein;
the AC detection unit is connected to the controller; and
the controller is connected to the LED driving and power supply unit.
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Accused Products
Abstract
A dimmable light emitting diode (LED) lamp is provided. The dimmable LED lamp includes an alternating current (AC) input unit and at least one AC detection unit connected to the AC input unit. The dimmable LED lamp also includes at least one LED driving and power supply unit and at least one LED light source assembly, where the LED driving and power supply unit is connected to the LED light source assembly. Further, the dimmable LED lamp includes at least one controller with a pulse width modulation (PWM) output, wherein the AC detection unit is connected to the controller, and the controller is connected to the LED driving and power supply unit.
5 Citations
17 Claims
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1. A dimmable light emitting diode (LED) lamp, comprising:
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an alternating current (AC) input unit; at least one AC detection unit connected to the AC input unit; at least one LED driving and power supply unit; at least one LED light source assembly, wherein the LED driving and power supply unit is connected to the LED light source assembly; and at least one controller with a pulse width modulation (PWM) output signal, wherein; the AC detection unit is connected to the controller; and the controller is connected to the LED driving and power supply unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for dimming a dimmable LED lamp, comprising:
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turning on a switch of the dimmable LED lamp; detecting a status of an AC input, wherein the status of the AC input includes a power-on status and a power-off status; adjusting automatically brightness within a given time period; detecting whether the switch is turned off within the given time period; when the switch is not turned off, maintaining the brightness at the level when a dimming process is completed; when the switch is turned off, recording the brightness level when the dimmable LED lamp is turned off; turning on the switch again; and maintaining the brightness at the level when the dimmable LED lamp is turned off last time. - View Dependent Claims (10, 11, 12, 13)
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14. A dimmable light emitting diode (LED) lamp, comprising:
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an alternating current (AC) input unit; one AC detection unit connected to the AC input unit; one LED driving and power supply unit; one LED light source assembly, wherein the LED driving and power supply unit is connected to the LED light source assembly; and one controller with a pulse width modulation (PWM) output signal, wherein; the AC detection unit is connected to the controller; the controller is connected to the LED driving and power supply unit; the AC detection unit is configured to detect a switch-status of a switch and an AC input power-off status; and the controller is configured to store the switch-status every time the switch is turned on or turned off, and a brightness status setting value for each corresponding switch-status. - View Dependent Claims (15, 16, 17)
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Specification