US 12,276,383 B2
Multistage parallel type loop-free decorative light string
Kunpeng Chen, Dongguan (CN)
Assigned to DONGGUAN LIANRUN LIGHTING CO., LTD., Dongguan (CN)
Filed by Dongguan LianRun Lighting Co., Ltd., Dongguan (CN)
Filed on Dec. 24, 2023, as Appl. No. 18/395,576.
Claims priority of application No. 202323298223.4 (CN), filed on Dec. 5, 2023.
Prior Publication US 2024/0125439 A1, Apr. 18, 2024
Int. Cl. F21S 4/10 (2016.01); F21V 21/002 (2006.01)
CPC F21S 4/10 (2016.01) [F21V 21/002 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A multistage parallel type loop-free decorative light string, comprising a main power cable (1), wherein a first positive wire (11) and a first negative wire (12) are arranged inside the main power cable (1); one end of the main power cable (1) is connected to a male plug (2), and the other end is connected to a female socket (3); a plurality of first lamps (4) are connected in parallel in the middle of the main power cable (1); the light string further comprises at least one branch power cable (5) connected in parallel to the main power cable (1); a second positive wire (51) and a second negative wire (52) are arranged inside the branch power cable (5); metal terminals (53) are arranged at end portions of both the second positive wire (51) and the second negative wire (52); the second positive wire (51) and the first positive wire (11) are crimped through the metal terminal (53), and the second negative wire (52) and the first negative wire (12) are crimped through the metal terminal (53); a connection between the main power cable (1) and the branch power cable (5) is externally sleeved with a light string connector (6); the light string connector (6) is spaced apart from the first lamps (4); and the branch power cable (5) is connected in parallel with at least one second lamp (7);
wherein the second lamp (7) comprises a second lamp holder (71) and a second lamp bulb (72) in threaded connection the second lamp holder (71); the second lamp holder (71) comprises a holder body (711) and a cover plate (712) fixedly connected to the holder body (711); the holder body (711) is provided with an accommodating position (713) for being connected to the second lamp bulb (72); and the holder body (711) is matched with the cover plate (712) to form a first wire receiving slot (714) for allowing the branch power cable (5) to pass through; and
wherein the cover plate (712) is further provided with a wire hiding slot (715) for closing, and a distributor plate (716) for preventing short circuits is arranged inside the wire hiding slot (715).