Abstract: In the present disclosure, ultrasonic welding is cleverly introduced to encapsulate the LED lamp, the rectifier, as well as other parts and components of a decorative light string, and the plastic outer shells with a specific structure cooperate with the ultrasonic welding lines, the glue overflow grooves, and the profiling raceway arranged on the plastic outer shells to enable a more reliable and efficient sealing of the LED lamp, the wire, the rectifier, as well as other parts and components encapsulated in the plastic outer shells. At the same time, ultrasonic welding will not cause the encapsulated objects to be in an overall high temperature environment nor impact the pins of components such as lamp holder or other parts connected to the wire during the welding process, avoiding the disconnection between the power cords and the components.

Abstract: A light bulb holder structure and a light bulb having same, in which the bulb cap of the light bulb holder is provided with a plurality of grooves in a tactful manner, and the depth of the grooves is greater than that of the external threads of the bulb cap, such that after the bulb cap is mounted on the light bulb and the light bulb is mounted on the light socket, the water accumulated between the light bulb holder structure and the light socket can be effectively discharged through the grooves. As a result, failure of the insulator (connector) on the light bulb holder structure caused by water accumulation can be avoided to a certain extent, thereby improving the reliability and safety of the light bulb.

Abstract: An LED bulb control device includes a rectifier unit, connected to an external power supply to convert an alternating current into a direct current; a DC-DC unit, connected to the rectifier unit; a signal sampling unit, connected to the rectifier unit or the external power supply for counting a number of changes in a cycle and a cycle length of the alternating current or a control signal pulse to provide a synchronization signal and acquire a control signal input by an external controller; a control unit, connected to the signal sampling unit for receiving the synchronization signal and/or the control signal output by the signal sampling unit; a MCU power supply unit, connected to the DC-DC unit and the control unit respectively for supplying power to the control unit; and an LED assembly connected to the DC-DC unit and the control unit respectively.

Abstract: A light bulb holder structure includes a bulb cap and a connector. By integral molding, the connector made of insulating material is molded with one end of the bulb cap to form an integration. The protrusion on the connector can increase the creepage distance of the light bulb, so as to improve waterproof performance of the light bulb and suppress erosion caused by ingress of water. In addition, the bulb cap may further be provided with connection parts to secure the combination of the connector and the bulb cap. Further, the end portion of the connector close to bulb cap may be provided with a threaded segment, and the threaded segment is an optional structure which can not only greatly improve the creepage distance, but also fix the relative position of the connector and the bulb cap when the light bulb is screwed into the socket.

Abstract: An LED device with lateral light emission includes a circuit board, a rectifying circuit, and an LED light source. The rectifying circuit includes a positive lead, a negative lead, a rectifier, a first resistor, and a second resistor, the positive lead and negative lead are provided on an end of the circuit board, the rectifier is provided on a first surface of the circuit board, and the first resistor and second resistor are provided on a second surface of the circuit board. The LED light source is provided on a side surface of the circuit board. By configuring the LED light source on the side surface of the circuit board through via holes, the layout of the electronic components is more compact and flexible, and adaptable to more light distribution designs.

Abstract: A light string with constant-current rectification includes a first constant-current rectification module, a second constant-current rectification module, and a light string formed by a plurality of light-emitting diodes connected in series. The first constant-current rectification module and the second constant-current rectification module each include rectifier diodes and a regulating circuit that maintains a constant current, an output terminal of the first constant-current rectification module is connected to an anode of the light string, and an input terminal of the first constant-current rectification module is connected to a power supply, an output terminal of the second constant-current rectification module is connected to a cathode of the light string, and a pair of conduction wires are connected between the input terminal of the first constant-current rectification module and the input terminal of the second constant-current rectification module.

Abstract: A synchronous control system of light bulbs includes a rectifier unit connected to a live line and a neutral line of an external power supply, a sampling unit connected to the rectifier unit or the external power supply to count a number of changes in a cycle and obtain a cycle length of the alternating current or a control signal pulse, so as to provide a synchronization signal and acquire a control signal input by an external controller, a control unit for receiving the synchronization signal and control the synchronization signal and/or control signal output by the sampling unit, an MCU power supply unit respectively connected to the rectifier unit and the control unit to supply power to the control unit, and LED assembly including one or more LED units which is respectively connected to the rectifier unit and the control unit and controlled by the control unit.

Abstract: A decorative bulb with inner lens includes a mounting base; a light bulb covering mounted on the mounting base; an optical lens, comprising a mounting part and a lens part integrally formed with the mounting part, the lens part is a semi-ellipsoid structure, and the lens part is provided with a light refraction strengthening part on an outer surface of the lens part, the light refraction strengthening part extends from a top of the lens part along the outer surface of the lens part to a bottom of the lens part, and a cross section of the light refraction strengthening part is in a shape of annular wave; a light unit mounted in the cone-shaped cavity.

Abstract: A lamp bulb including a lampshade with an open end, a light-emitting circuit board arranged in the lampshade, a light emitting diode provided on the circuit board, a silicone washer, and a lamp holder fixing the silicon washer and the circuit board to the open end of the lampshade in a waterproof arrangement. A self-locking element is fixed to a power port of the light-emitting circuit board, and is configured to receive a rod-shaped first conductive element passing through a hole in the silicone washer. A second conductive element is fixed to a second power port of the light-emitting circuit board, and to the lamp holder.

Abstract: An RGB decorative lighting having synchronous luminescence, comprising power cable, the power cable is connected with a plurality of luminous devices in parallel, the luminous devices all comprise a power conversion unit, a control unit and a light unit; the power conversion unit is connected to the power cable in parallel, the control unit comprises a light control module and a signal synchronization module, the light control module is electrically connected to an output end of the rectifier circuit; the signal synchronization module is used to count a number of alternating current cycles to provide a synchronization signal; the light unit is electrically connected to the output end of the rectifier circuit, and the light unit is communicatively connected to the light control module.

Abstract: Disclosed is a screw mounted lamp string, comprising a LED lamp string having a number of LED holders connected with each other by wires and corresponding LED bulbs; wherein the screw mounted lamp string comprises a screw head; the live wire contact of the screw head is connected with a corresponding fuse tube, which is connected with the LED lamp string by wires. The screw head of the screw mounted lamp string can directly connect with the screw string, thereby realizing power supply to the LED lamp string, without additional power supply lines, which is saving costs, improving the convenience of using the LED lamp string, and improving the soldering efficiency of the patch LED and the resistance to external force impact, thus enabling the lamp string of the disclosure to have a better application effect in outdoor scenes.