Abstract: The disclosure provides a lighting device having a time calibration mechanism and the method thereof. The lighting device includes a light-emitting module, a timing module, a control module and a communication module. The timing module generates a local time signal. The control module is coupled to the light-emitting module and the timing module, and controls the activation time of the light-emitting module according to the local time signal and a lighting control table. The communication module is coupled to the control module. The control module periodically receives, through the communication module, a first time synchronization signal transmitted from a first external device, update the local time signal according to the first time synchronization signal to generate an updated local time signal, and control the activation time of the light-emitting module according to the updated local time signal and the lighting control table.

Abstract: The lighting device having a time calibration function and the lighting system having the same are provided. The lighting device includes a processing module, a timing module and a first radio frequency signal module. The timing module is connected to the processing module. The first radio frequency signal module is connected to the processing module. The processing module receives a local time signal through the first radio frequency signal module, and calibrate the current time of the timing module according to the local time signal so as to update the current time of the timing module.

Abstract: A high luminous-efficacy linear lighting device includes a tubular light cover, a support plate and a light source board. The tubular light cover has a light-emitting portion and a light-shielding portion. The light-emitting surface of the light-emitting portion is a curved surface. The bottom of the light-emitting portion has a lower opening. The top of the light-shielding portion has an upper opening. The bottom of the light-emitting portion is connected to the top of the light-shielding portion. The width of the bottom of the light-emitting portion is greater than the width of the top of the light-shielding portion. The support plate is disposed within the light-shielding portion and adjacent to the upper opening. The light source board is disposed on one side of the support plate and faces the light-emitting portion.

Abstract: An industrial light fixture includes a base and a plurality of light source modules. The base has a first pivot portion and a second pivot portion, and the base includes a first serrated structure disposed at the first pivot portion. The light source modules are respectively pivotally connected to the two sides of the base. Each of the light source modules includes an optical lens, a light source board, and a housing. The optical lens and the light source board are disposed in the housing. Each of the light source modules has a first shaft portion pivotally connected to the first pivot portion and a second shaft portion pivotally connected to the second pivot portion. The first shaft portion has a second serrated structure engaged with the first serrated structure.

Abstract: The disclosure provides a lighting system having an energy-saving communication mechanism and the method thereof. The lighting system includes a lighting device and a sentinel device. The sentinel device detects a moving object so as to generate a detection signal and execute an active mode. The sentinel device performs timing in the active mode to generate a time window, and transmits an activation signal to the lighting device to turn on the lighting device. When the sentinel device generates the detection signal again within the time window, the sentinel device executes a passive mode to perform timing again so as to refresh the time window.

Abstract: A lighting device with fault detection and self-locking control function, which includes a light-emitting module, a power module, a voltage detection module, a signal conversion module, a self-locking control module and a signal control module. The power module drives the light-emitting module. The voltage detection module detects the driving voltage of the light-emitting module to generate a detection signal. The signal conversion module converts the detection signal into an operating status signal. The self-locking control module controls the power module. The signal control module controls the self-locking control module according to the operating status signal. The signal control module activates the self-locking control module when the operating status signal is in an abnormal state, and the self-locking control module controls the power module to stop driving the light-emitting module and enter a self-locking state.

Abstract: A lighting device includes an input module, a first light-emitting module, a second light-emitting module, a current adjusting module and a ripple suppression module. The input module includes a first input terminal and a second input terminal. One end of the first light-emitting module is connected to the first input terminal. One end of the second light-emitting module is connected to the first input terminal. The current adjusting module includes a first switch and a second switch connected to each other. The other end of the first light-emitting module is connected to a first node via the first switch, and the other end of the second light-emitting module is connected to the first node via the second switch. The two ends of the ripple suppression module are connected to the first node and the second node respectively. The second node is connected to the second input terminal.

Abstract: The present invention discloses a lighting device with a flexible circuit board connection structure, which includes a cylindrical light cover, a light source board and a flexible circuit board. The light source board is disposed in the cylindrical light cover and includes a plurality of electrodes. The flexible circuit board includes a soldering structure corresponding to the light source board, and the soldering structure includes a plurality of soldering pads. The electrodes of the light source board are respectively soldered to the soldering pads of the soldering structure.

Abstract: An emergency lighting device with detachable end caps includes a tube body, two end caps, an input circuit and a load. The end caps are respectively disposed at two ends of the tube body. Each of the end caps includes a cylindrical body connected to the tube body and a cover detachably mounted on the cylindrical body. The input circuit has a first pin, a second pin, a third pin, and a fourth pin. The first pin, the second pin, the third pin, and the fourth pin are respectively disposed on the two end caps and connected to an external power source. The load is disposed inside the tube body and connected to the input circuit.

Abstract: A light-emitting diode (LED) light source having high luminous efficiency includes a substrate, a positive electrode pad, a negative electrode pad, a first LED chip and a second LED chip. The positive electrode pad is disposed on the substrate. The negative electrode pad is disposed on the substrate, and there is a groove formed between the negative electrode pad and the positive electrode pad. The first LED chip is disposed on the positive electrode pad, and electrically connected to the positive electrode pad and negative electrode pad. The second LED chip is disposed on the negative electrode pad, and electrically connected to the positive electrode pad and negative electrode pad. A portion of the first LED chip protrudes from the positive electrode pad and covers a portion of the groove.

Abstract: A LED lighting device includes a power supplier, a light cover and a circuit board. The circuit board is disposed in the light cover. The circuit board has a protective layer disposed thereon and a plurality of light sources. The circuit board has a front soldering section, a rear soldering section and a circuit section. The circuit board includes a left-wing portion, a right-wing portion, and a flat portion disposed therebetween and not parallel thereto, such that the circuit board is bent. The light sources are disposed on the circuit section and electrically connected to the circuit section. The protective layer includes an opening and two coated layers. The opening includes a front section, a rear section and a connecting section. The coated layers are disposed on the two sides of the connecting section respectively. The light sources are within the connecting section.

Abstract: A lighting system includes a plurality of lighting devices and at least one intelligent predicting sensing device. Each of the lighting devices stores a plurality of lighting group setting values. One of the lighting group setting values of any one of the lighting devices is identical to one of the lighting group setting values of the lighting device adjacent thereto. The intelligent predicting sensing device stores a sensing group setting value. The sensing group setting value is identical to one of the lighting group setting values of the lighting device adjacent thereto. The intelligent predicting sensing device, upon detecting a moving object, broadcasts a first sensing signal having the sensing group setting value. The lighting device receiving the first sensing signal is activated according to the first sensing signal and broadcasts a first trigger signal. The first trigger signal has the lighting group setting values of the lighting device.

Abstract: A power controller includes a signal identification element, a switch driver, and a switch element. The signal identification element includes a high-frequency signal identifier for receiving a first input signal. The high-frequency signal identifier includes a voltage divider, an inverter, a first comparator, a second comparator, a latch, and an AND gate. The switch driver is connected to the high-frequency signal identifier. The switch element is connected to the switch driver. The circuit design of the high-frequency signal identifier can perform a noise reduction function and a multi-condition software logic operation mechanism in order to generate a conduction signal. The switch driver activates the switch element according to the conduction signal.

Abstract: A highly compatible lighting device driver includes an input module, a rectification module, a driving control module, a power conversion module and an inductive module. The input module couples an input signal. The rectification module is connected to the input module, and rectifies the input signal to generate a rectified signal. The driving control module is connected to the rectification module, and includes a control unit and a signal identification unit connected to each other. The power conversion module is connected to the driving control module, the control unit, and a load. The inductive ballast mode control module is connected to the input module, the rectification module, and the load.

Abstract: A power controller includes a signal identification element including a low-frequency signal identifier, a switch driver, a switch element. The low-frequency signal identifier includes a comparator, a rising-edge trigger, a falling-edge trigger, a counting unit, and a latch. The comparator receives a second input signal and compares the second input signal with a first reference voltage to generate a comparison signal. The rising-edge trigger and the falling-edge trigger receive the comparison signal. The counting unit includes a counting element and an OR gate. The OR gate generates a logic signal according to the outputs of the rising-edge trigger and the falling-edge trigger, and the counting element generates a count output signal accordingly. The latch determines whether the second input signal is a direct-current signal or a power-frequency signal according to the logic signal and the count output signal l, thereby controlling the switch driver to operate the switch element.

Abstract: The disclosure provides a lighting adjustment circuit, which includes a driving power source, a switching circuit, a low color temperature light source, and a high color temperature light source. The switching circuit is connected to the driving power source. The low color temperature light source is connected to the driving power source and the switching circuit. The high color temperature light source is connected to the driving power source and the switching circuit. The color temperature of the high color temperature light source is greater than the color temperature of the low color temperature light source. The switching circuit is switched to make the driving power source form three current loops to drive the low color temperature light source and the high color temperature light source.

Abstract: A downlight with screw-free fixation structure includes a lamp body and a light source board. The lamp body has a central hole, an inner ring body, and a plurality of protrusions. The inner ring body is disposed on the inner edge of the lamp body to partially cover the central hole. The protrusions are distributed along the inner edge of the lamp body and surrounding the central hole. A plurality of slots are formed respectively between the protrusions and the inner ring body. The light source board is disposed on the inner ring body and within the central hole, and engaged with the multiple slots. The light source board is disc-shaped.

Abstract: An emergency lighting device having an emergency test function includes an emergency test switch, an input circuit, a processing circuit, an emergency circuit, and a load. The input circuit has a first pin, a second pin, a third pin, and a fourth pin. The first pin is connected to the live-wire output terminal of an external power source via a main switch. The second pin is connected to the live-wire output terminal. The third pin is connected to the neutral-wire output terminal of the external power source via the emergency test switch. The fourth pin is connected to the neutral-wire output terminal. The processing circuit is connected to the input circuit. The emergency circuit is connected to the processing circuit. The load is connected to the emergency circuit.