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:
An LED lighting apparatus includes a first LED light source and a second LED light source included in a first light source group; a third LED light source and a fourth LED light source included in a second light source group; a mode detection circuit configured to determine a mode; a current control unit for serial and parallel connection of the first light source group and the second light source group; balancing circuits for serial and parallel connection of the respective light source groups; and a current path providing circuit for providing current paths. The LED lighting apparatus performs light emission in various states depending on the change of a rectified voltage and the change of a mode.
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:
The present invention relates to a substrate and integrated circuit chip with improved patterns, and more particularly to technology that is efficient in terms of thermal control and that can reduce the causes of occurrence of defects during the operation of a terminal to which a high voltage is applied. The present invention is characterized in that a first clearance distance between a first terminal, to which a voltage higher than voltages to be applied to the remaining terminals is applied, or first terminal pattern corresponding to the first terminal and a body pattern present between an integrated circuit chip and a substrate is larger than a second clearance distance between a second terminal, including at least some of the remaining terminals other than the first terminal, or second terminal pattern corresponding to the second terminal and the body pattern.
Abstract:
Disclosed are a light emitting diode illumination apparatus and a control method thereof. The light emitting diode illumination apparatus includes a light source that includes a plurality of light emitting diode channels including one or more light emitting diodes, and emits light by application of a rectified voltage obtained by converting an AC voltage, and a control circuit that selectively provides current paths according to a change in a level of the rectified voltage through a plurality of switching circuits connected to the light emitting diode channels, and controls pulse widths of control pulses provided to the switching circuits such that an current supplied to the light source of each channel follows a waveform of the 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 light emitting diode lighting apparatus capable of improving a power factor and temperature characteristics. The light emitting diode lighting apparatus according to a preferred embodiment of the present invention includes a light source having a plurality of light emitting diode channels and performs a current regulating operation to allow a light source to emit light. The light source uses a current path provided by current regulating to emit light.
Abstract:
Disclosed is an LED lighting apparatus capable of improving a power factor and temperature characteristics. The LED lighting apparatus according to a preferred embodiment of the present invention includes a light source having a plurality of LED channels and performs a current regulating operation to allow a light source to emit light. The light source uses a current path provided by current regulating to emit light.
Abstract:
Disclosed is an LED lighting apparatus. The LED lighting apparatus may include a leakage current control unit configured to provide a leakage current path when a rectified voltage is retained at a predetermined voltage or less for a preset time or more, and a leakage current and retention current may be discharged through a leakage current path.
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.