Plug-in string lamp structure

1. A novel plug-in string lamp structure, comprising a string lamp connecting line ( 1 ), a male connector ( 21 ) electrically connected to one end of the string lamp connecting line ( 1 ), and a female connector ( 22 ) electrically connected to the other end of the string lamp connecting line ( 1 ), wherein the string lamp connecting line ( 1 ) is provided with bulb components ( 3 ) which are arranged in sequence at intervals along the string lamp connecting line ( 1 ), and each of the bulb components ( 3 ) comprises a lamp cap ( 4 ), a luminescent light source ( 5 ) and a light-transmitting lampshade ( 6 ), respectively;

wherein the lamp cap ( 4 ) comprises a plastic inner core ( 41 ), the plastic inner core ( 41 ) is formed with an inner core accommodating cavity ( 411 ) which runs through the plastic inner core from top to bottom completely, the string lamp connecting wire ( 1 ) is provided with a positive lead ( 111 ) and a negative lead ( 121 ) which are inserted into the inner core accommodating cavity ( 411 ), the core of the positive lead ( 111 ) is welded or riveted with a positive contact terminal ( 112 ), the core of the negative lead ( 121 ) is welded or riveted with a negative contact terminal ( 122 ), and the positive contact terminal ( 112 ) and the negative contact terminal ( 122 ) are located in the inner core accommodating cavity ( 411 ), respectively;

the lamp cap ( 4 ) further comprises a rubber-coated member ( 42 ), and the rubber-coated member ( 42 ) is injection-molded into an integrated structure with the upper end of the plastic inner core ( 41 ), the outer skin of the positive lead ( 111 ) and the outer skin of the negative lead ( 121 );

the luminescent light source ( 5 ) is provided with a light source positive pin ( 511 ) and a light source negative pin ( 512 ), the upper end of the luminescent light source ( 5 ) is inserted into the inner core accommodating cavity ( 411 ) of the plastic inner core ( 41 ), the light source positive pin ( 511 ) of the luminescent light source ( 5 ) is in contact with and in electric communication with the positive contact terminal ( 112 ) of the positive lead ( 111 ), and the light source negative pin ( 512 ) of the luminescent light source ( 5 ) is in contact with and in electric communication with the negative contact terminal ( 122 ) of the negative lead ( 121 ).

2. The novel plug-in string lamp structure according to claim 1 , wherein the string lamp connecting line ( 1 ) is provided with two signal lines ( 131 ) extending into the inner core accommodating cavity ( 411 ), respectively, and the core of each signal line ( 131 ) is welded or riveted with a signal terminal ( 132 ), each of the signal terminals ( 132 ) extends into the inner core accommodating cavity ( 411 ), and the outer skin of each signal line ( 131 ) is injection-molded into an integrated structure with the rubber-coated member ( 42 ), respectively;

the luminescent light source ( 5 ) is provided with a signal pin ( 52 ) corresponding to each signal terminal ( 132 ), respectively, and each signal pin ( 52 ) is in contact with and in electric communication with the corresponding signal terminal ( 132 ), respectively.

3. The novel plug-in string lamp structure according to claim 2 , wherein a plug-in plastic head ( 53 ) is provided at the upper end of the luminescent light source ( 5 ), the light source positive pin ( 511 ), the light source negative pin ( 512 ) and the signal pin ( 52 ) are exposed to the plug-in plastic head ( 53 ), respectively, the plug-in plastic head ( 53 ) of the luminescent light source ( 5 ) is inserted into the inner core accommodating cavity ( 411 ) of the plastic inner core ( 41 ), and the plug-in plastic head ( 53 ) is buckled with the lower end of the plastic inner core ( 41 ).

4. The novel plug-in string lamp structure according to claim 3 , wherein the plug-in plastic head ( 53 ) is provided with a plastic head buckle hole ( 531 ), an inner core buckle tongue ( 412 ) corresponding to the plastic head buckle hole ( 531 ) is provided at the lower end of the inner wall of the inner core accommodating cavity ( 411 ), and the inner core buckle tongue ( 412 ) of the plastic inner core ( 41 ) is buckled in the plastic head buckle hole ( 531 ) of the plug-in plastic head ( 53 ).

5. The novel plug-in string lamp structure according to claim 3 , wherein the outer surface of the lower end of the plastic inner core ( 41 ) is provided with an inner core positioning protrusion ( 413 ) protruding outward, and the plug-in plastic head ( 53 ) is provided with a plastic head positioning protrusion ( 532 ) corresponding to the inner core positioning protrusion ( 413 );

when the plug-in plastic head ( 53 ) is correctly inserted into the inner core accommodating cavity ( 411 ), the inner core positioning protrusion ( 413 ) is vertically aligned with the plastic head positioning protrusion ( 532 ).

6. The novel plug-in string lamp structure according to claim 3 , wherein the luminescent light source ( 5 ) further comprises a luminescent tube ( 54 ) and a lamp housing ( 55 ), the light source positive pin ( 511 ), the light source negative pin ( 512 ) and the signal pin ( 52 ) are provided in the luminescent tube ( 54 ), respectively, and the luminescent tube ( 54 ) is embedded in the lamp housing ( 55 );

the plug-in plastic head ( 53 ) is provided with a plastic head fixing hole ( 533 ) corresponding to the lamp housing, and the upper end of the lamp housing ( 55 ) is embedded in the plastic head fixing hole ( 533 ) of the plug-in plastic head ( 53 ).

7. The novel plug-in string lamp structure according to claim 6 , wherein the inner wall of the plastic head fixing hole ( 533 ) is provided with a buckle flange ( 534 ), the outer surface of the upper end of the lamp housing ( 55 ) is provided with a buckle groove ( 551 ), and the buckle flange ( 534 ) of the plug-in plastic head ( 53 ) is buckled into the buckle groove ( 551 ) of the lamp housing ( 55 ).

8. The novel plug-in string lamp structure according to claim 1 , wherein a plastic isolation column ( 43 ) for isolating the positive lead ( 111 ) from the negative lead ( 121 ) is further embedded in the inner core accommodating cavity ( 411 ), and the plastic isolation column ( 43 ) is located between the positive contact terminal ( 112 ) of the positive lead ( 111 ) and the negative contact terminal ( 122 ) of the negative lead ( 121 );

the upper end of the plastic isolation column ( 43 ) is injection-molded into an integrated structure with the rubber-coated member ( 42 ).

9. The novel plug-in string lamp structure according to claim 8 , wherein the lower end of the plastic isolation column ( 43 ) is formed with a resistor mounting hole ( 431 ) which runs through the plastic isolation column completely in the transverse direction, a protective resistor ( 44 ) is mounted in the resistor mounting hole ( 431 ) of the plastic isolation column ( 43 ), the protective resistor ( 44 ) is provided with a resistor positive pin ( 441 ) and a resistor negative pin ( 442 ), the resistor positive pin ( 441 ) of the protective resistor ( 44 ) is in contact with and in electric communication with the positive contact terminal ( 112 ) of the positive lead ( 111 ), and the resistor negative pin ( 442 ) of the protective resistor ( 44 ) is in contact with and in electric communication with the negative contact terminal ( 122 ) of the negative lead ( 121 ).

10. The novel plug-in string lamp structure according to claim 1 , wherein the rubber-coated member ( 42 ) is provided with a lampshade connecting part ( 421 ), and the upper end of the light-transmitting lampshade ( 6 ) is screwed or clamped with the lampshade connecting part ( 421 ).