Patent ID: 9485830
Filing Date: 2016-11-01
CPC Classification: H05B

Claim Text:
1. An LED lighting apparatus comprising: a rectifier circuit connected to a dimmer, wherein said dimmer modifies a waveform of voltage, so that the waveform has a truncated voltage period where a portion of the voltage is truncated and a non-truncated voltage period where the voltage is present only in a specific period; a first light-emitting circuit connected to said rectifier circuit and containing a single or a plurality of LEDs in which current begins to flow when an output voltage of said rectifier circuit exceeds a threshold voltage; a first bypass circuit having a first terminal, a second terminal, a bypass path for making the current flow to said rectifier circuit without passing through said first light-emitting circuit, so that the current flows through said first bypass circuit in the truncated voltage period in order to stabilize an operation of said dimmer, and a detecting unit for detecting the current flowing through said first light-emitting circuit, a second bypass circuit connected to said first light-emitting circuit; a second light-emitting circuit connected to said second bypass circuit and containing a single or a plurality of LEDs in which current begins to flow when the output voltage of said rectifier circuit exceeds a threshold voltage; a current limiting circuit for limiting the current flowing into said second light-emitting circuit; and a filter circuit, which is constructed from a resistor and a capacitor, and which has a first terminal and a second terminal, in which said first terminal of said filter circuit is connected to said first terminal of said first bypass circuit, and said second terminal of said filter circuit is connected to said second terminal of said first bypass circuit, wherein said first bypass circuit is connected to a current output end of said rectifier circuit and a current input end of said first light-emitting circuit, and wherein when the current detected by said detecting unit exceeds a predetermined value, said first bypass circuit shuts off the current flowing through said bypass path.