| 摘要 |
<p>The present invention provides a lighting device based on a light emitting diode, comprising a plurality of lighting segments that is based on a light emitting diode and connected with a current controller in series. Each lighting segment based on a light emitting diode comprises at least one lighting unit that is based on a light emitting diode and connected in series. The plurality of lighting segments based on a light emitting diode is also connected in parallel with a plurality of switch controllers, so as to provide a plurality of operation modes under the control of a switching voltage comparison unit to turn on different numbers of light emitting diode lighting segments. Each switch controller is connected in parallel with an opposite light emitting diode lighting segment, and the switching voltage comparison unit generates a transmission signal that passes through and controls the plurality of switch controllers. Each switch controller can also be connected between a positive terminal of the light emitting diode lighting segment and the current controller that are opposite, and the switching voltage comparison unit generates two transmission signals that pass through and control the plurality of switch controllers.</p> |
