Abstract: A light dimming system includes a rectifier, a voltage acquisitor, a controller, a driver connected to the controller and the rectifier, a dimmer starter, and a power supplier. The rectifier is used to connect to mains power supply via a switch or a dimmer to convert the input alternating current (AC) into a direct current (DC). The voltage acquisitor is used to receive the DC from the rectifier, obtain status of the mains power supply. The controller is used to generate a driver control signal according to the status of the mains power supply. The driver control signal is an analog control signal or a pulse width modulation (PWM) control signal. The driver generates a corresponding driving current according to the driver control signal to enable the lighting module to emit light. The dimmer starter is configured to turn on the dimmer according to a conduction control signal.

Abstract: A delayed lighting system includes a light emitting circuit; a main power supply circuit connected to the light emitting circuit; a delayed lighting circuit; an energy storage circuit configured to store electrical energy from a mains electricity when the main power supply circuit supplies power to the light emitting circuit; and a control circuit connected to the energy storage circuit, the light emitting circuit, and the delayed lighting circuit respectively. When the main power supply circuit stops supplying power to the light emitting circuit, the control circuit is configured to control the energy storage circuit to supply power to the delayed lighting circuit and the delayed lighting circuit is configured to emit light.

Abstract: A delayed lighting system includes a light emitting circuit; a main power supply circuit connected to the light emitting circuit; a delayed lighting circuit; an energy storage circuit configured to store electrical energy from a mains electricity when the main power supply circuit supplies power to the light emitting circuit; and a control circuit connected to the energy storage circuit, the light emitting circuit, and the delayed lighting circuit respectively. When the main power supply circuit stops supplying power to the light emitting circuit, the control circuit is configured to control the energy storage circuit to supply power to the delayed lighting circuit and the delayed lighting circuit is configured to emit light.

Abstract: The present disclosure provides a sensor light and a system for preventing false triggering of a sensor. The sensor light includes a sensor module, a light emitting module, a power drive circuit, and a shielding component. The sensor module is configured to measure incoming infrared light radiated to the sensor module, and generate a trigger signal when the measured infrared light meets a preset condition. The light emitting module is configured to emit light. The power drive circuit is connected to the sensor module and the light emitting module, and configured to receive the trigger signal from the sensor module, and control the light emitting module to emit light in response to the trigger signal. The shielding component is disposed between the sensor module and the light emitting module, and configured to shield the sensor module from radiation of infrared light generated by the light emitting module.

Abstract: The present disclosure provides a sensor light and a system for preventing false triggering of a sensor. The sensor light includes a sensor module, a light emitting module, a power drive circuit, and a shielding component. The sensor module is configured to measure incoming infrared light radiated to the sensor module, and generate a trigger signal when the measured infrared light meets a preset condition. The light emitting module is configured to emit light. The power drive circuit is connected to the sensor module and the light emitting module, and configured to receive the trigger signal from the sensor module, and control the light emitting module to emit light in response to the trigger signal. The shielding component is disposed between the sensor module and the light emitting module, and configured to shield the sensor module from radiation of infrared light generated by the light emitting module.

Abstract: An LED light bulb comprises at least one LED light source; a driver arranged in an electrical connection with the LED light source to drive and control the LED light source to emit light; a base electrically connecting the driver to an outside power source; a heat sink provided to dissipate heat generated by the LED light source, having a supporting portion to receive and support the LED light source; a housing joined to the base to accommodate the LED light source, the heat sink and the driver to integrate as a whole. The present disclosure provides an LED light bulb which has an appearance of the traditional incandescent light bulb.

Abstract: The present disclosure provides an LED light source and an LED light bulb including the LED light source. The LED light source comprises a first LED strip including a first middle portion and first wings positioned at two sides of the first middle portion, and a second LED strip including a second middle portion and second wings positioned at two sides of the second middle portion. Multiple LED chips are disposed on the first wings and the second wings respectively. The first LED strip and the second LED strip are stacked and electrically connected at the first middle portion and the second middle portion. Another aspect of the present disclosure provides an LED light bulb having the LED light source. The first LED strip and the second LED strip are stacked to form an electrical connection.

Abstract: A light-emitting diode (LED) smart control circuit and the related LED lighting device are provided. The LED smart control circuit includes a microprocessor, a bridge rectifier, a transformer circuit, a power grid detection unit, a voltage detection unit, a battery charging controller, a first sampling circuit, a second sampling circuit, a constant current controller, and an external rechargeable battery. The LED smart control circuit is configured for controlling LED light source components to emit light. An LED lighting device includes the LED light source components, a smart control circuit board, a rechargeable battery, a shell, and a lamp head. The smart control circuit board is integrated with the disclosed LED smart control circuit.

Abstract: The present disclosure provides a time-delay lighting circuit and a lighting device. The time-delay lighting circuit includes a first voltage-current conversion circuit configured to convert a first inputted current to a current satisfying working conditions of the light emitting component; an energy storage and discharge device configured to provide power to the light emitting component when the control switch is switched off to disconnect the external power source from the time-delay lighting circuit; a charging controller configured to charge the energy storage and discharge device when the control switch is switched on to connect the external power source to the time-delay lighting circuit; and a switch status detection circuit configured to detect an on/off status of the control switch, and when the control switch is detected to be switched off, control the energy storage and discharge device to provide power to the light emitting component.

Abstract: An LED light bulb comprises at least one LED light source; a driver arranged in an electrical connection with the LED light source to drive and control the LED light source to emit light; a base electrically connecting the driver to an outside power source; a heat sink provided to dissipate heat generated by the LED light source, having a supporting portion to receive and support the LED light source; a housing joined to the base to accommodate the LED light source, the heat sink and the driver to integrate as a whole. The present disclosure provides an LED light bulb which has an appearance of the traditional incandescent light bulb.

Abstract: The present invention provides an LED lighting device and a method for determining an operation time of the LED lighting device. The LED lighting device includes an LED module configured to emit light; an LED driver configured to supply power and drive the LED module; a micro controller unit (MCU) module that is connected to the LED driver and configured to measure an operation time of the LED lighting device; a display module that is connected to the MCU module and configured to receive the operation time sent from the MCU module and display the operation time; and a power supply module configured to supply power to the MCU module and the display module.

Abstract: The present disclosure provides a time-delay lighting circuit and a lighting device. The time-delay lighting circuit includes a first voltage-current conversion circuit configured to convert a first inputted current to a current satisfying working conditions of the light emitting component; an energy storage and discharge device configured to provide power to the light emitting component when the control switch is switched off to disconnect the external power source from the time-delay lighting circuit; a charging controller configured to charge the energy storage and discharge device when the control switch is switched on to connect the external power source to the time-delay lighting circuit; and a switch status detection circuit configured to detect an on/off status of the control switch, and when the control switch is detected to be switched off, control the energy storage and discharge device to provide power to the light emitting component.

Abstract: A power circuit for an LED lighting device including an alternative current (AC) power supply, a dimmer, a transformer and a dimming control circuit. The dimming control circuit includes a filtering unit configured to filter a voltage signal outputted from the transformer and a rectifying unit configured to receive the signal outputted from the filtering unit and rectify the signal to a DC signal. The dimming control circuit also includes a boost converter unit configured to boost the received DC voltage to a needed DC voltage and a voltage feedback control circuit unit configured to control the DC voltage boosted by the boost converter unit. Further, the dimming control circuit includes a buck converter unit configured to convert the boosted DC voltage to the voltage and current needed by the LED lighting device and a digital control unit configured to automatically adjust current strength needed by the buck converter unit.

Abstract: A light-emitting diode (LED) smart control circuit and the related LED lighting device are provided. The LED smart control circuit includes a microprocessor, a bridge rectifier, a transformer circuit, a power grid detection unit, a voltage detection unit, a battery charging controller, a first sampling circuit, a second sampling circuit, a constant current controller, and an external rechargeable battery. The LED smart control circuit is configured for controlling LED light source components to emit light. An LED lighting device includes the LED light source components, a smart control circuit board, a rechargeable battery, a shell, and a lamp head. The smart control circuit board is integrated with the disclosed LED smart control circuit.

Abstract: The present disclosure provides a light-emitting diode (LED) driving device, including a control unit and a power unit integrated on a packaging substrate to form an integrated circuit (IC). The control unit is electrically connected to the power unit for controlling the power unit to convert an AC current to a DC current for an LED load to emit light. The control unit is configured to generate a control signal with a lowest working frequency higher than 250 KHz.

Abstract: A power circuit for an LED lighting device including an AC power supply, a dimmer and a control circuit is provided. The control circuit includes a filtering unit configured to filter a voltage signal coming from the dimmer and a rectifying unit configured to receive the signal outputted from the filtering unit and rectify the signal to a DC signal. The control circuit also includes a transformer unit connected to the rectifying unit. Further, the control circuit includes a dimmer phase detection unit configured to sample the rectified voltage signal at point K and convert the voltage signal to a low voltage pulse signal and a flyback conversion unit configured to receive the pulse signal outputted by the dimmer phase detection unit and adjust a current flowed through the transformer unit and a first transistor to control the output current to the LED lighting device.

Abstract: A power circuit for an LED lighting device including an AC power supply, a dimmer and a control circuit is provided. The control circuit includes a filtering unit configured to filter a voltage signal coming from the dimmer and a rectifying unit configured to receive the signal outputted from the filtering unit and rectify the signal to a DC signal. The control circuit also includes a transformer unit connected to the rectifying unit. Further, the control circuit includes a dimmer phase detection unit configured to sample the rectified voltage signal at point K and convert the voltage signal to a low voltage pulse signal and a flyback conversion unit configured to receive the pulse signal outputted by the dimmer phase detection unit and adjust a current flowed through the transformer unit and a first transistor to control the output current to the LED lighting device.

Abstract: A power circuit for an LED lighting device using discrete components is provided. The power circuit includes a filtering unit configured to filter an inputted AC and a rectifying unit configured to convert an AC to a DC. The power circuit also includes a transformer connected to the rectifying unit. Further, the power circuit includes a first switch and a second switch that are field effect transistors, wherein a grid electrode of the first switch is connected to a drain electrode of the second switch. Further, a drain electrode of the first switch is connected to the transformer. A source electrode of the first switch is connected to a source electrode of the second switch through a detection resistor. A grid electrode of the second switch is connected to the source electrode of the first switch through a thermistor.

Abstract: The present invention provides an LED lighting device and a method for determining an operation time of the LED lighting device. The LED lighting device includes an LED module configured to emit light; an LED driver configured to supply power and drive the LED module; a micro controller unit (MCU) module that is connected to the LED driver and configured to measure an operation time of the LED lighting device; a display module that is connected to the MCU module and configured to receive the operation time sent from the MCU module and display the operation time; and a power supply module configured to supply power to the MCU module and the display module.

Abstract: A power circuit for an LED lighting device including an alternative current (AC) power supply, a dimmer, a transformer and a dimming control circuit. The dimming control circuit includes a filtering unit configured to filter a voltage signal outputted from the transformer and a rectifying unit configured to receive the signal outputted from the filtering unit and rectify the signal to a DC signal. The dimming control circuit also includes a boost converter unit configured to boost the received DC voltage to a needed DC voltage and a voltage feedback control circuit unit configured to control the DC voltage boosted by the boost converter unit. Further, the dimming control circuit includes a buck converter unit configured to convert the boosted DC voltage to the voltage and current needed by the LED lighting device and a digital control unit configured to automatically adjust current strength needed by the buck converter unit.