Abstract: An indoor automatic dimming system includes a lamp control module in connection with a controlled lamp, an optical sensor and a mobile device. The optical sensor senses indoor and outdoor luminance and transmits a piece of sensing data to the lamp control module. The mobile device performs a manual mode and an automatic mode. When the manual mode is performed, the lamp control module drives the controlled lamp according to the piece of sensing data and a control signal transmitted from the mobile device. When the automatic mode is performed, the lamp control module receives a configuration parameter transmitted from the mobile device and automatically adjusts luminance of the controlled lamp according to the piece of sensing data and the configuration parameter. Accordingly, the indoor automatic dimming system can instantly sense indoor/outdoor luminance to maintain a balanced luminance indoors and provide operational convenience.

Abstract: A control system for wirelessly switching lamps over short distances includes a mobile device, a lamp control switch and a controlled lamp. A user holds the mobile device to approach or depart from the lamp control switch and continuously transmit a wireless signal according to a communication protocol. The lamp control switch receives the wireless signal according to the communication protocol and turns on or off a corresponding controlled lamp according to signal intensity of the wireless signal. The control system is operated when users travel among different environments. When users get close to the lamp control switch, the lamp control switch drives the controlled lamp to turn on or off, and when users depart from the lamp control switch, the lamp control switch automatically turns off the controlled lamp, thereby ensuring operational convenience, energy conservation and carbon reduction.

Abstract: A lamp tube and a lamp fixture with sensing capability are disclosed. The lamp tube with sensing capability includes a lamp tube body, and the lamp tube body includes a power converting unit, an LED strip and a sensing unit. The power converting unit is for receiving AC power and outputting DC power for driving the LED strip and the sensing unit. The sensing unit will timely output a fire alarm signal to notify the firemen and the people nearby when a fire occurs. The shape of the lamp tube with sensing capability is the same as a normal lamp tube, so both of them can be installed in the same lamp fixture. One normal lamp tube is replaced by the lamp tube with sensing capability to include a fire sensing function. The safety is enhanced and the installation is convenient.

Abstract: An automatic switching method for a smart switch is implemented in an automatic switching system having a mobile device, a wireless station, a CPnP server and at least one match switch. The method includes steps of: developing match data for establishing relationship between the mobile device and the matching switch in the CPnP server; and establishing a connection between the mobile device and the match switch by a user operation to control the match switch. When the mobile device is within wireless signal range of the wireless station to be connected with the match switch via the wireless station, the mobile device controls the match switch through the wireless station. When the mobile device is located outside the wireless signal range of the wireless station to be connected with the match switch via the CPnP server, the mobile device controls the match switch via the CPnP server.

Abstract: An LED tube has a tube body, an LED light board and two caps. The tube body has a translucent tube shell and a heat dissipating seat. The translucent tube shell has two openings and a gap. The heat dissipating seat is mounted in the gap. The LED board faces toward the translucent tube shell and has a convex luminous surface obliquely facing toward the translucent tube shell to increase an illumination range of the LED light board, thus, an illumination angle of the LED tube in accordance with the present invention is also increased. Therefore, the LED tube glows evenly and eliminates grain effects of the LED tube.

Abstract: A lamp tube and a lamp fixture with sensing capability are disclosed. The lamp tube with sensing capability includes a lamp tube body, and the lamp tube body includes a power converting unit, an LED strip and a sensing unit. The power converting unit is for receiving AC power and outputting DC power for driving the LED strip and the sensing unit. The sensing unit will timely output a fire alarm signal to notify the firemen and the people nearby when a fire occurs. The shape of the lamp tube with sensing capability is the same as a normal lamp tube, so both of them can be installed in the same lamp fixture. One normal lamp tube is replaced by the lamp tube with sensing capability to include a fire sensing function. The safety is enhanced and the installation is convenient.

Abstract: The present invention is a circuit board connector, and the circuit board connector comprises an insulative block and at least one electric connecting bar. The insulative block has a supporting surface. The at least one electric connecting bar is mounted through the insulative block, and each electrical connecting bar has two terminals bent to the supporting surface. Each of the terminals has a bending part and a welding part, and the welding part is close to the supporting surface. When two circuit boards are connected, the welding parts of the terminals of the electric connecting bar are welded with bond pads of each of the circuit boards to electronically connect the circuit boards, and the insulative block is connected to the circuit boards to fix the circuit boards. Therefore, the circuit boards can be fixed and electronically connected for forming a large circuit board.

Abstract: A light-emitting diode (LED) tube has a tube and at least one LED tube fastener. Each of the at least one LED tube fastener has a body and a magnetic core. The body has at least one insertion leg formed on a bottom thereof and connected to a top wall of the tube. The magnetic core is mounted in a top portion of the body to be magnetically attached to a lamp fixture when the LED tube is mounted on the lamp fixture such that the at least one LED tube fastener holds and supports the LED tube and the LED tube is not bent due to a weight thereof.

Abstract: An LED tube has a tube body, an LED light board and two caps. The tube body has a translucent tube shell and a heat dissipating seat. The translucent tube shell has two openings and a gap. The heat dissipating seat is mounted in the gap. The LED light board is mounted in the tube body and has a luminous surface, wherein two opposite ends of the LED light board extend out of the heat dissipating seat. The luminous surface has four electrical connecting parts, wherein each two electrical connecting parts are respectively mounted near a corresponding one of the two opposite ends, thus, the four electrical connecting parts are mounted away from the heat dissipating seat to extend internal creepage distances between the four electrical connecting parts and the heat dissipating seat, and further increase electrical safety of the LED tube.

Abstract: An LED lamp has two preheating current control units respectively connected to a first electrode terminal and a second electrode terminal of the LED lamp, two lamp-side rectification circuits, and an LED light string. Each preheating current control unit has a ballast-side rectification circuit connected to one of the first and second electrode terminals and a load-varying circuit having a resistive load and a control circuit. The resistive load is serially connected to a DC output terminal of the ballast-side rectification circuit through the control circuit. The control circuit adjusts a resistance of the resistive load. Two input terminals of each lamp-side rectification circuit are respectively connected to one of the electrodes of each of the first electrode terminal and the second electrode terminal. The LED light string has two ends respectively connected to the two output terminals of each lamp-side rectification circuit, and has multiple series-connected LED elements.

Abstract: An illuminating apparatus and control method is adapted to keep a constant total brightness of the ambient light and light produced by the illuminating apparatus. The illuminating apparatus has a control module storing an objective brightness and detect the ambient brightness through an optical sensor. The control module turns on a lamp according to a comparison result of the objective brightness and the ambient brightness. Hence, a total brightness of the lamp's brightness and the ambient brightness is adjustable to be equally bright as the objective brightness. The illuminating apparatus of the invention does not provide excessive brightness and accordingly conserves electric power energy.

Abstract: An arrester includes a switch and a lightning detection breaker connected to the switch. The lightning detection breaker includes a metal conducting terminal electrically connected to an earth return, a DC power supply terminal, a ground terminal and an output terminal. When the power supply is under a lightning strike, a potential difference of both the DC power supply terminal and the ground terminal of the lightning detection breaker will go up to several thousands of volts. However, a voltage of the metal conducting terminal will not go up because the metal conducting terminal is electrically connected to the earth return. The switch will automatically become open circuit by the lightning detection breaker, and therefore an electronic device connected to the arrester is protected from damage done by the lightning.

Abstract: A light-emitting diode (LED) tube has a tube and at least one LED tube fastener. Each of the at least one LED tube fastener has a body and a magnetic core. The body has at least one insertion leg formed on a bottom thereof and connected to a top wall of the tube. The magnetic core is mounted in a top portion of the body to be magnetically attached to a lamp fixture when the LED tube is mounted on the lamp fixture such that the at least one LED tube fastener holds and supports the LED tube and the LED tube is not bent due to a weight thereof.

Abstract: The LED lighting tube compatible with an electronic ballast has two snubber circuits, a waveform conversion circuit, and at least one LED light string. The snubber circuits are connected to terminals of the LED lighting tube, and input terminals of each snubber circuit are connected to electrode pins of a corresponding terminal. Each snubber circuit has at least one resistor connected in series between the electrode pins of the corresponding terminal. The waveform conversion circuit has multiple rectifier diodes, and input terminals of the waveform conversion circuit are respectively connected to output terminals of the snubber circuits, with a recovery time of each rectifier diode being under 2.5 us. Two ends of the at least one LED light string are respectively connected to output terminals of the waveform conversion circuit, and each one of the at least one LED light string includes multiple LED units connected in series.

Abstract: An LED tube has a tube body, an LED light board and two caps. The tube body has a translucent tube shell and a heat dissipating seat. The translucent tube shell has two openings and a gap. The heat dissipating seat is mounted in the gap. The LED light board is mounted in the tube body and has a luminous surface, wherein two opposite ends of the LED light board extend out of the heat dissipating seat. The luminous surface has four electrical connecting parts, wherein each two electrical connecting parts are respectively mounted near a corresponding one of the two opposite ends, thus, the four electrical connecting parts are mounted away from the heat dissipating seat to extend internal creepage distances between the four electrical connecting parts and the heat dissipating seat, and further increase electrical safety of the LED tube.

Abstract: An LED tube has a tube body, an LED light board and two caps. The tube body has a translucent tube shell and a heat dissipating seat. The translucent tube shell has two openings and a gap. The heat dissipating seat is mounted in the gap. The LED board faces toward the translucent tube shell and has a convex luminous surface obliquely facing toward the translucent tube shell to increase an illumination range of the LED light board, thus, an illumination angle of the LED tube in accordance with the present invention is also increased. Therefore, the LED tube glows evenly and eliminates grain effects of the LED tube.

Abstract: An LED tube has a tube body, an LED light board and two caps. The tube body has a translucent tube shell and a heat dissipating seat. The translucent tube shell has two openings, a gap, two side walls separated by the gap, two first slide tracks and two second slide tracks. The heat dissipating seat is mounted in the gap and has two opposite sides respectively mounted in the two first slide tracks. The LED board abuts the heat dissipating seat and has two opposite sides respectively mounted in the two second slide tracks. The sides of the heat dissipating seat and the sides of the LED light board are separated by the first and the second slide tracks to extend creepage distances between the heat dissipating seat and the LED light board, and further avoid a short circuit between the heat dissipating seat and the LED light board.

Abstract: An LED AC driving circuit capable of adjusting operating voltage has a rectifying unit, an LED unit, a voltage-controlled transistor, a current detecting unit and a current regulating unit to form a power loop. Further, a resistance adjusting unit is connected to the voltage-controlled transistor in parallel. The current regulating unit detects the operating power of the voltage-controlled transistor. When the detected operating power is zero, the resistance of the resistance adjusting unit is increased for increasing the current flowing through the voltage-controlled transistor. When the detected operating power becomes larger than a maximum rated power, the resistance of the resistance adjusting unit is decreased to reduce the current. Thus, the operating power is maintained between zero and the maximum rated power.

Abstract: An LED lamp has two preheating current control units respectively connected to a first electrode terminal and a second electrode terminal of the LED lamp, two lamp-side rectification circuits, and an LED light string. Each preheating current control unit has a ballast-side rectification circuit connected to one of the first and second electrode terminals and a load-varying circuit having a resistive load and a control circuit. The resistive load is serially connected to a DC output terminal of the ballast-side rectification circuit through the control circuit. The control circuit adjusts a resistance of the resistive load. Two input terminals of each lamp-side rectification circuit are respectively connected to one of the electrodes of each of the first electrode terminal and the second electrode terminal. The LED light string has two ends respectively connected to the two output terminals of each lamp-side rectification circuit, and has multiple series-connected LED elements.

Abstract: The LED lighting tube that is compatible with an electronic ballast has two snubber circuits, a waveform conversion circuit, and at least one LED light string. The snubber circuits are connected to terminals of the LED lighting tube, and input terminals of each snubber circuit are connected to electrode pins of a corresponding terminal, and each snubber circuit has at least one resistor connected in series between the electrode pins of the corresponding terminal. The waveform conversion circuit has multiple rectifier diodes, wherein input terminals of the waveform conversion circuit are respectively connected to output terminals of the snubber circuits, wherein a recovery time of each rectifier diode is under 2.5 us. Two ends of the at least one LED light string are respectively connected to output terminals of the waveform conversion circuit, wherein each one of the at least one LED light string comprises multiple LED units connected in series.