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.

Abstract: The present invention discloses a lighting device with a flexible circuit board connection structure, which includes a backboard, a plurality of light source board, and a flexible circuit board. The light source boards are fixed to one side of the backboard, and each of the light source boards includes a plurality of electrodes. The flexible circuit board includes a plurality of soldering structures corresponding respectively to the light source boards, and each of the soldering structures includes a plurality of soldering pads. The electrodes of each of the light source boards are respectively soldered to the pads of the soldering structure corresponding thereto.

Abstract: A lighting device includes a dimming module, a control module, a rectifier module and a light-emitting module. The control module is connected to the dimming module and saves a lookup table. The rectifier module is connected to the dimming module and control module. The rectifier module generates a rectified voltage to drive the dimming module and control module. The light-emitting module is connected to the dimming module and control module. The control module outputs an initial dimming signal to control the dimming module to output an initial drive signal so as to drive the light-emitting module. The control module detects the current operating voltage of the light-emitting module, and compares the current operating voltage with the lookup table to generate a target dimming signal corresponding thereto, such that the dimming module is controlled by the target dimming signal to generate a target driving signal to drive the light-emitting module.

Abstract: A lighting device with easy installation functionality includes a light-emitting module, two lamp heads, and two lamp head clamps. The light-emitting module has a driver disposed therein. Each lamp head has a connection hole on one side thereof for connecting to one end of the light-emitting module. Each lamp head has a chamber disposed therein and communicating with the connection hole, and the inner wall of each lamp head is provided with a plurality of glue grooves. The two lamp head clamps are sleeved on the lamp heads respectively. The glue is applied inside the lamp heads to achieve sealing, and the glue grooves inside the lamp heads ensure waterproofing and safety reliability. Additionally, the lamp head clamps press tightly on the exterior of the lamp heads so as to effectively prevent sealing failure due to external environmental impacts.

Abstract: An intelligent modularized multi-function lighting device includes a rectifying module, a voltage converting module, an electricity output module, a direct-current converting module, a lighting module and an external functional module. The rectifying module is connected to an external power source. The voltage converting module is connected to the rectifying module. The electricity output module is connected to the voltage converting module, and has a positive electrode output end and a negative electrode output end. The direct-current converting module is connected to the rectifying module, and has a direct-current output end, a signal output end and a grounding end. The lighting module is connected to the positive electrode output end and the negative electrode output end. The external functional module is detachably connected to the direct-current output end, the signal output end and the grounding end via the lighting module.

Abstract: A lighting device with adaptive power adjustment function includes a constant-voltage isolation circuit, a DC/DC constant-current power circuit, a controller and a load. The constant-voltage isolation circuit is connected to an external power source. The DC/DC constant-current power circuit is connected to the constant-voltage isolation circuit. The controller is connected to the DC/DC constant-current power circuit. The load includes a plurality of load units. The load is connected to the controller and the DC/DC constant-current power circuit. The controller detects the operational status of each of the load units to generate a detection result, and controls the DC/DC constant-current power circuit according to the detection result so as to adjust a total output power.

Abstract: A light-emitting diode (LED) tube light having a flexible circuit board connection structure includes a light source board, a power board and a flexible circuit board. The flexible circuit board has a first end and a second end. The first end is electrically connected to the light source board. The second end has a welding portion, and the second end is electrically connected to the power board via the welding portion. The flexible circuit board includes a plurality of connection portions and the connection portions are curved in shape, whereby the flexible circuit board is wavy. The above structure can significantly reduce the manufacturing cost of the LED tube light and increase the production efficiency of the LED tube light.

Abstract: A lighting device includes a suspension structure and a light tube. The suspension structure includes a flat plate member, a clamp member, and a fixing member. The flat plate member has a first hole disposed at one end of the flat plate member. The clamp member is disposed on one side of the flat plate member, and includes a main body and two wing portions respectively disposed at two ends of the main body. The main body has a rotation hole, and each of the wing portions has a bent portion. The fixing member passes through the rotation hole and the first hole, such that the clamp member is rotatably fixed to the flat plate member. The light tube includes a tube body having two grooves. The bent portions of the wing portions are embedded in the grooves respectively.

Abstract: A light-emitting diode (LED) with high reliability includes a first solder pad, a second solder pad and a plurality of LED dies. The LED dies are connected to each other in parallel and each of the LED dies has a positive electrode and a negative electrode. The positive electrode and the negative electrode of any one of the LED dies are respectively connected to the negative electrode and the positive electrode of the LED die adjacent thereto via two first conductive wires. The positive electrode and the negative electrode of one of the LED dies are respectively connected to the first solder pad and the second solder pad via two second conductive wires. The special parallel connection structure of the LED can achieve high reliability and satisfy the requirements of environmental protection.

Abstract: A three-dimensional (3D) plant growth lighting system includes a top lighting module, a lateral lighting module and a bottom lighting module. The top lighting module is disposed on the top of a plant chamber and the plant chamber contains a plant. The lateral lighting module is disposed on one side of the plant chamber. The bottom lighting module is disposed on a bottom of the plant chamber. The controller is connected to the top lighting module, the lateral lighting module and the bottom lighting module so as to control the top lighting module, the lateral lighting module and the bottom lighting module.