Patent application number | Description | Published |
20080265270 | LED ELEMENT FOR AN LED STREAM - An LED element of an LED stream has an LED and a hollow seat for holding the LED. The LED has a body and two pins extended from a bottom face of the body. The hollow seat has two opposite through side holes defined in an outside of the hollow seat. To assembly the LED element, the LED with the two pins upwardly plugs to inside of the hollow seat. Then the two pins respectively and outwardly pass through the corresponding through side hole of the seat until the body is held by an upper portion of the hollow seat. | 10-30-2008 |
20080272705 | LIGHT EMITTING DIODE LAMP ASSEMBLY HAVING A VOLTAGE-REGULATING CAPABILITY - The light emitting diode (LED) lamp assembly has an LED light string, a power plug, an AC to DC converter and a voltage-regulating element. The LED light string has multiple LEDs connected in series. The power plug is connected to the LED light string and obtains an AC power from an external AC power source. The AC to DC converter is retained and mounted in the power plug and is connected to the LED light string, wherein the AC to DC converter obtains and converts the AC power into a DC power. The voltage-regulating element is connected between the LED light string and the AC to DC converter in the power plug and has a constant voltage. Therefore, a voltage supplied to the LED light string is obtained by subtracting the constant voltage of the voltage-regulating element from the voltage of the DC power. | 11-06-2008 |
20100102733 | LED LIGHT STRING - A light emitting diode light string has a front plug, a rear socket and an LED assembly. The front plug has a first end, a second end and a resistor being mounted inside the front plug and connected to the first end. The rear socket has a first end and a second end. The LED assembly is electrically connected between the resistor and the second end of the rear socket and has multiple LEDs being connected in serial. Plastic package materials for sealing resistors are unnecessary. Therefore cost of manufacturing the LED light string is low. | 04-29-2010 |
20100108863 | LIGHT-SENSIBLE CONTROL DEVICE FOR LIGHT STRING - A light-sensible control device for a light string has a housing of transparent or translucent material, a control circuit board with a photo sensor mounted in the housing and two conductive plates protruding from the housing as a plug. The housing is pervious to light so that the photo sensor detects ambient light passing through the housing from different directions. Based on the detected intensity of the ambient light, the control device determines whether the light string should be turned on or turned off. | 05-06-2010 |
20100148680 | LED LIGHT STRING CAPABLE OF INCREASING THE NUMBER OF LEDS WITHOUT ADDING EXTENSION PLUGS AND SOCKETS - An LED light string has a plug with two front diodes, an extension socket with two rear diodes, multiple LED units connected between the plug and the extension socket, and multiple intermediate diodes connected to the LED units. The intermediate diodes, the two front diodes and the two rear diodes are connected to form multiple bridge rectifiers. The multiple bridge rectifiers are connected to an AC voltage in parallel and drive the LED units, respectively. | 06-17-2010 |
20100176735 | LED light string assembly with constant current circuit - An LED light string assembly has a plug, an extension socket, a light string connected between the plug and the extension socket, and at least one constant current circuit connected to the light string. The constant current circuit has a first input capacitor, a second input capacitor, a first diode, a second diode and a filter capacitor. The first input capacitor is connected in series to the second input capacitor between a first AC terminal and the cathode of the first diode. The second diode is connected between the first diode and the second AC terminal. The filter capacitor is connected between the cathode of the first diode and the second AC terminal. | 07-15-2010 |
20100296290 | Led-based christmas light string assembly with parallel-wired lighting units - An LED light string assembly has a plug for providing a low DC voltage, an extension socket, a light string connected between the plug and the extension socket. The light string has multiple LED Christmas bulbs connected in parallel. Each LED Christmas bulb includes an LED and a resistor connected in series. Even one of the LED Christmas bulb burns out, all the remaining LED Christmas bulb of the light string will not be affected and still can be normally turned on as required to generate light. | 11-25-2010 |
20110013388 | LIGHT STRING ASSEMBLY - A light string assembly has a plug, an extension socket, a light string, a resistor and a reference diode. The plug is adapted to connect to an AC power. The light string is electrically connected between the plug and the extension socket and has multiple lighting units connected in series. The resistor is electrically connected to the light string in series. The reference diode is connected to the resistor in parallel in a reverse-biased direction. The reference diode avoids over-voltage across the resistor and thereby protects the resistor and the lighting units of the light string from damage. | 01-20-2011 |
20110133667 | CONTROL BOX FOR A CHRISTMAS LIGHT STRING - A control box for a Christmas light string is connected between a plug and a light string. The control box has a harmonic reducing element, an AC/DC converting circuit, a driving circuit and multiple switches. The AC/DC converting circuit converts AC power to DC power. The driving circuit outputs controls signals to turn on or off the switches, whereby light units of the light string are correspondingly activated or deactivated by the switches. The harmonic reducing element is connected between the plug and the AC/DC converting circuit to reduce or eliminate harmonics resulted from the operations of the switches. Therefore, the AC power input to the control box is prevented form being interfered by the harmonics to ensure the light string operates normally. | 06-09-2011 |
20110285300 | Constant-Current Controller for LED Light String - A constant-current controller for a LED light string has a control unit, multiple constant current circuits, multiple first switches and multiple second switches. The control unit outputs driving signals to turn on the first switches, causing the second switches being turned on subsequently. Therefore, the constant current circuits output electric currents flowing through the second switches to activate the LED light string. | 11-24-2011 |
20130076256 | LIGHT STRING WITHOUT USING A CONTROL BOX - A light string has a plug, a tail socket and multiple LED lamps connected between the plug and the tail socket. The plug and tail socket respectively have a voltage converting circuit to commonly form a power converting circuit that converts AC voltage to DC voltage. The LED lamps include a primary LED lamp and multiple secondary LED lamps, wherein the primary LED lamp has a primary control chip for outputting control data to each LED lamp. According to the control data, the LED lamps are able to generate different lighting effects without using an additional control box. | 03-28-2013 |
20130207561 | LED Light Tube and A Circuit Module for the Same - The invention relates to an LED light tube and a circuit module for the same, wherein the circuit is located in a light tube body and includes a rectifying unit, a current regulating and voltage regulating unit, and an LED unit. The light tube body can be installed in a lamp-holder of a fluorescent tube without changing a starter and a ballast. The rectifying unit has two power terminals connected to electrodes of the light tube body for receiving a mains power and the rectifying unit via the electrodes. The rectifying unit converts the mains power to a sign wave DC voltage. The current regulating and voltage regulating unit is connected to the rectifying unit for converting the mains power to a working power. The LED unit is electrically connected to the current regulating and voltage regulating unit for receiving the working power to emit light. | 08-15-2013 |
20140333218 | LED LIGHT STRING WITH OPEN CIRCUIT PROTECTION - An LED light string with open circuit protection has a first end for receiving a first voltage, a second end for receiving a second voltage, and multiple LED units connected in series between the first end and the second end. Each of the LED units has multiple LEDs and at least one by-pass resistor connected in parallel. Even when the LEDs of the same LED unit all fail, a current from the first end to the second end can still flow through all the LED units via the by-pass resistors to drive the remaining normal LED units. | 11-13-2014 |