Abstract: Disclosed is an LED lighting apparatus capable of performing lighting using a rectified voltage. The LED lighting apparatus may include a lamp divided into a plurality of light emitting modules, and perform lighting using a voltage obtained by lowering a rectified voltage, thereby preventing internal parts from being damaged by a surge voltage. Furthermore, the structure in which LED groups are arranged on a substrate can be improved to uniformize the light intensity.

Abstract: Disclosed is a control circuit of an LED lighting apparatus, capable of reducing total harmonic distortion (THD). The control circuit may include a THD reduction circuit configured to control a driving current on a current path corresponding to light emission of an LED group in response to a change of a rectified voltage.

Abstract: The present invention discloses a dimming regulation circuit which stabilizes a rectified voltage in response to an unstable output voltage of a dimmer and a lighting apparatus including the dimming regulation circuit. The dimming regulation circuit stabilizes the rectified voltage and provides the stabilized rectified voltage to a lamp, when a rectified voltage corresponds to a preset stabilization required range.

Abstract: Disclosed are a control circuit and a voltage generation method of an LED lighting apparatus which provides lighting using a rectified voltage. Light emission of the LED lighting apparatus can be implemented through current regulation, a rectified voltage used for light emission can be used to provide a constant voltage required for a peripheral circuit, and a current flowing through a current path formed by the current regulation can be controlled to perform dimming.

Abstract: Disclosed is a lighting apparatus using an LED as a light source. The lighting apparatus may include: a first driver configured to control a flow of a first current through a low-power switching element by comparing a reference voltage and a sensing voltage, in response to light emission of an LED group; and a second driver configured to form a flow of a second current through a high-power switching element in connection with the flow of the first current of the first driver, in response to light emission of the LED group. The lighting apparatus stably provides a current path for a current corresponding to high power.

Abstract: Disclosed is a control circuit of an LED lighting apparatus which is capable of improving power efficiency. The control circuit controls light emission of one or more LED groups in response to changes of a rectified voltage, and includes a current source configured to provide a primary current using a driving current outputted through a current path of a driver and a secondary current using a rectified current provided to a plurality of LED groups. Thus, the control circuit can perform a charging operation using a current provided from the current source, and provide a charge voltage to an additional device.

Abstract: Provided is an LED lighting apparatus with an improved heat radiation property, which is capable of effectively radiating heat generated therein. The LED lighting apparatus may include: a light source unit comprising a plurality of LED groups each having one or more LEDs; and a driving unit configured to provide a current path corresponding to light emission of the light source unit. The light source unit and the driving unit may be arranged on the same substrate so as to be separated from each other. Among the plurality of LED groups, the LED group having the largest heat value may be arranged farthest away from the driving unit, compared to the other LED groups. Through the above-described arrangement, the heat radiation property of the LED lighting apparatus can be improved.

Abstract: Disclosed is a lighting apparatus for reducing total harmonic distortion (THD). The lighting apparatus may include a lighting unit having a plurality of LED groups divided into first and second lighting groups, and the lighting unit may provide a current path for light emission corresponding to a change of a rectified voltage, using two or more drives having the same structure.

Abstract: Disclosed is a lighting apparatus using LEDs as a light source. The lighting apparatus may include: a dimming control unit configured to provide one of first and second control signals as a dimming control signal, the first control signal corresponding to a dimming signal inputted in response to connection of a dimmer, the second control signal corresponding to disconnection of the dimmer; and a driving current control circuit configured to control a driving current corresponding to light emission of a lighting unit in response to the dimming control signal of the dimming control unit.

Abstract: Disclosed is a lighting apparatus using an LED as a light source. The lighting apparatus may connect first and second lighting units in series or parallel according to a rectified voltage, change one or more of first and second driving currents corresponding to light emissions of the first and second lighting units, and have the universality for rectified voltages.

Abstract: Provided is a lighting apparatus using an LED as a lighting source. The lighting apparatus may distribute a current corresponding to a rectified voltage to a lighting unit and a secondary current circuit, perform primary light emission at low luminance, and reduce an optical deviation between LED groups through secondary light emission. Thus, the lighting apparatus can reduce an optical deviation corresponding to dimming and one cycle of rectified voltage.

Abstract: Disclosed is a control circuit of an LED lighting apparatus having a current control function. The control circuit of the LED lighting apparatus may include: a current control circuit configured to control the LED lighting apparatus divided into a plurality of LED groups, and provide a current path corresponding to sequential light emissions of the LED groups in response to a rectified voltage; and surplus voltage buffer circuits corresponding to two or more LED groups, respectively, and each configured to buffer a surplus voltage.

Abstract: Disclosed is a lighting apparatus which includes LEDs and reduces flicker. The lighting apparatus may secure a charge voltage by performing a charge operation using a current corresponding to a rectified voltage equal to or more than a preset level, and compensate for the rectified voltage provided to a lighting unit including LED groups by performing a discharge operation for the charge voltage in response to the rectified voltage less than the preset level, thereby reducing flicker.

Abstract: The present invention discloses an LED lighting apparatus. The LED lighting apparatus includes a converter for transforming rectified voltage in accordance with a switching operation according to a driving pulse and outputting the transformed voltage, a current regulator for generating the driving pulse having a pulse width varied in response to a control signal and the amount of current of the converter and switching the operation of the converter using the generated driving pulse, and a peripheral circuit module for providing the control signal for controlling the dimming of an LED lighting.

Abstract: A control circuit of an LED lighting apparatus divided into a plurality of LED channels may include: a current control circuit configured to provide a current path corresponding to sequential light emissions of the LED channels in response to a rectified voltage; and a residual voltage buffer circuit configured to correspond to an LED channel which finally emits light, and buffer a residual voltage when the rectified voltage rises to a preset value such that the residual voltage occurs.

Abstract: Provided is a control circuit of an LED lighting apparatus, which is capable of reducing the occurrence of a flicker while performing lighting. The control circuit of the LED lighting apparatus may include a charge and discharge module charged by a rectified voltage and discharging LED channels, and control one or more of charge timing, a charged voltage, and discharge timing of the charge and discharge module such that the charge and discharge module supplies a voltage to the LED channels at least during a control period at which the amount of current supplied to the LED channels is the smallest. Thus, the occurrence of a flicker in the LED lighting apparatus can be improved.

Abstract: Disclosed is a control circuit of an LED lighting apparatus which is capable of improving power efficiency. The control circuit controls light emission of one or more LED groups in response to changes of a rectified voltage, and includes a current source configured to provide a primary current using a driving current outputted through a current path of a driver and a secondary current using a rectified current provided to a plurality of LED groups. Thus, the control circuit can perform a charging operation using a current provided from the current source, and provide a charge voltage to an additional device.

Abstract: Disclosed herein are a lighting system for emitting light using power having a phase controlled by a dimmer and improving the light emission state of a light source and a control circuit for the same. Shimmer can be improved by performing charging and discharging using a current supplied to a load or a current flowing in the current path of a load and performing current control using a charging voltage generated by the charging and discharging.

Abstract: Disclosed is a control circuit of an LED lighting apparatus having a current control function. The control circuit of the LED lighting apparatus may include: a current control circuit configured to control the LED lighting apparatus divided into a plurality of LED groups, and provide a current path corresponding to sequential light emissions of the LED groups in response to a rectified voltage; and surplus voltage buffer circuits corresponding to two or more LED groups, respectively, and each configured buffer a surplus voltage.

Abstract: Disclosed is a lighting apparatus for reducing total harmonic distortion (THD). The lighting apparatus may include a lighting unit having a plurality of LED groups divided into first and second lighting groups, and the lighting unit may provide a current path for light emission corresponding to a change of a rectified voltage, using two or more drives having the same structure.