Lamp socket, light source and string light assembly

Abstract

Lamp base comprising: a base body (1) in the upper inner region of which a contact pin seat (11) is arranged, wherein a lamp lead positioning slot (111) is arranged on the upper side of the contact pin seat (11) and extends through the side wall of the base body (1); wherein several clamping walls (12) are arranged uniformly in an annular arrangement in the inner region of the base body (1) and clamp the lamp head (81), wherein a drainage groove (13) is formed between two adjacent clamping walls (12) so that water can drain from the outer wall of the lamp head (81); a base cap (2) whose underside is provided with a positioning pressure block (21); and two contact pins (3) mounted on the contact pin seat (11);wherein, when the base cap (2) is mounted on the upper part of the base body (1), the positioning pressure block (21) clamps the lamp lead (9) in the lamp lead positioning slot (111), so that the contact pins (3) penetrate the outer skin of the lamp lead (9) and touch the inner leads, while the base cap (2) covers the top of the base body (1).

Description

The present invention relates to the technical field of outdoor lighting, in particular a lamp base, light source and light chain assembly. String lights are frequently used for outdoor camping and other outdoor lighting applications. Several lamp sockets, each holding a bulb, are mounted on a single cable. Together with a power controller and a power source, this creates a complete string light assembly. However, existing string light assemblies have the following disadvantages: 1. When used outdoors, the string light assembly is often exposed to rain. With conventional lamp sockets, rainwater can penetrate the tubular base and collect at the lamp head. This water can then come into contact with the terminals at the lamp head, potentially contaminating the electrical circuit and causing short circuits and other dangerous situations. 2.The lamp base has contact pins for connecting the lamp cable to the bulb, but the connection between these pins and the bulb's terminals is unstable and can easily lead to contact problems. Furthermore, the lamp base lacks reverse polarity protection, making it easy to accidentally reverse the positive and negative wiring of the bulb. To solve these problems, a lamp socket, a light source and a string of lights assembly are provided. In view of the aforementioned technical shortcomings, the object of the present invention is to provide a lamp base, a light source, and a string of lights in which clamping walls are arranged uniformly in a ring inside the base body, and a drainage groove is formed between each pair of adjacent clamping walls, so that rainwater that has penetrated the base body is properly drained away via the drainage groove. This prevents the accumulation of rainwater on the top of the lamp head and prevents contact with the terminals, thus ensuring a high level of safety. At the same time, the base cap covers the top of the base body, thereby reducing the likelihood of rainwater penetrating the base body and improving its water resistance.Furthermore, a positioning tab is arranged on one side of the strip-shaped extension tab, which is installed in the positioning tab groove. This fixes the position of the V-shaped spring tab, ensuring that the V-shaped spring tab is in stable and complete contact with the terminal block and guarantees conductivity stability. This solves the technical problems mentioned in the prior art. To solve the aforementioned technical problem, the following technical solution is employed: The present invention provides a lamp base comprising a base body, a base cap, and two contact pins mounted on the contact pin seat; a contact pin seat is arranged on the inner top surface of the base body, having an overall cuboid structure; the four upper corners of the contact pin seat are integrally connected to the inner top surface of the base body, with a gap between each of the four side surfaces of the contact pin seat and the inner top surface of the base body; a lamp lead positioning slot penetrating the side wall of the base body is arranged on the top surface of the contact pin seat;Inside the base body, several clamping walls are arranged in a ring to grip the lamp head. A drainage groove is formed between each pair of clamping walls, allowing water to drain away from the outer wall of the lamp head. This prevents rainwater from accumulating on the top of the lamp head and from contacting the terminals, thus increasing safety. Four clamping walls are provided, and correspondingly, four drainage grooves are also present. The four upper corners of the contact pin seat each correspond to one of the four clamping walls, and the four side surfaces of the contact pin seat each correspond to the position of one of the four drainage grooves. This ensures that any rainwater that does penetrate is properly drained away via the drainage grooves, preventing it from entering or accumulating on the top of the contact pin seat. The underside of the base cap is equipped with a positioning pressure block.When the base cap is installed on the upper part of the base body, the positioning pressure block firmly presses the lamp lead arranged in the lamp lead positioning slot, so that the contact pins penetrate the outer skin of the lamp lead and make contact with the inner conductors; at the same time, the base cap covers the top of the base body, thereby reducing the likelihood of rainwater ingress into the base body and improving water resistance. In a preferred technical embodiment, an upper arc-shaped slot is arranged in the inner base of the lamp lead positioning slot, the upper arc-shaped slot extending into the base body to enable a snug and secure installation of the lamp lead; a lower arc-shaped slot is arranged on the lower base surface of the positioning pressure block; the upper arc-shaped slot is adapted to the underside of the lamp lead, and the lower arc-shaped slot is adapted to the top side of the lamp lead, so that the positioning pressure block and the inner base of the lamp lead positioning slot fit snugly against the lamp lead. In a preferred technical embodiment, the lower bottom surface of the base cap has two mutually symmetrical L-shaped locking hooks; two locking projections are symmetrically arranged on the inner upper surface of the base body, the locking projections being located on the upper side surfaces of the opposing drainage grooves; when the two L-shaped locking hooks are in corresponding engagement with the two locking projections, the positioning pressure block presses the lamp cable firmly in place; the corresponding engagement of the L-shaped locking hooks with the two locking projections enables stable installation of the base cap as well as convenient disassembly. In a preferred technical embodiment, a downwardly extending S-shaped suspension hook is arranged on the side surface of the base cap, which is located outside the base body; the arrangement of the S-shaped suspension hook facilitates suspension; at the same time, a projection corresponding to the position of the S-shaped suspension hook is arranged on the outer surface of the base cap, so that in the rest state the curved area of ​​the S-shaped suspension hook is in contact with the outer surface of the projection, thereby ensuring stability when suspended. In a preferred technical embodiment, the contact pin comprises a U-shaped clamping plate and a V-shaped spring tab; prongs are integrally arranged on the outer surfaces of the U-shaped clamping plate; a strip-shaped extension tab is integrally arranged on the lower bottom surface of the U-shaped clamping plate; a positioning tab is integrally arranged on one side of the underside of the strip-shaped extension tab, and the V-shaped spring tab is integrally arranged on the upper side of this positioning tab; the V-shaped spring tab serves to maintain sufficient contact pressure with the terminal; compared to a snap-fit ​​connection between the contact pin and the terminal, contacting via a V-shaped spring tab exhibits higher contact stability;With a snap-fit ​​connection, repeated insertion and removal leads to wear of the contact surfaces, which can easily cause contact problems, whereas the elasticity of the V-shaped spring tab ensures a permanent connection to the terminal and thus guarantees a stable electrical contact. In a preferred embodiment, symmetrical card plate grooves are formed in the inner base of the lamp cable positioning slot; a support block is arranged on one side of each card plate groove; the U-shaped clamping plate and the piercing tongue are mounted in the card plate groove, with the support block correspondingly supporting the lower end of the piercing tongue. Furthermore, vertical bores symmetrically connected to the card plate grooves are formed in the inner base of the lamp cable positioning slot; the strip-shaped extension tab, the positioning tab, and the V-shaped spring tab are mounted in the vertical bores; a positioning tab groove is formed on one side of the vertical bore, with one side edge of the positioning tab fitting into the positioning tab groove.If the V-shaped spring tab is positioned directly at one end of the strip-shaped extension tab, its position can easily shift after repeated insertion and removal, potentially leading to poor contact between the V-shaped spring tab and the terminal block. In the present embodiment, a positioning tab is provided on one side of the strip-shaped extension tab. This tab is installed in the positioning tab groove, thereby fixing the position of the V-shaped spring tab, ensuring stable and sufficient contact with the terminal block, and thus guaranteeing high conductivity stability. In a preferred embodiment, a U-shaped groove is formed on the lower bottom surface of the contact pin seat; the two lateral groove sections of the U-shaped groove each communicate with the corresponding vertical bores. This means that when the individual parts of the contact pin are installed accordingly in the card plate grooves and the vertical bores, the V-shaped spring tab projects into the lateral groove sections of the U-shaped groove, so that the terminals installed in the lateral groove sections come into contact with the V-shaped spring tab. Furthermore, a reverse polarity protection groove, connected to the bottom groove of the U-shaped groove, is formed on the lower bottom surface of the contact pin seat.Inside the lamp head, a rubber stopper is installed. Two terminal blocks, electrically connected to the lamp core, protrude from its upper face. A plug-in plate is located on one side of the upper face of the rubber stopper, adjacent to the terminal blocks. Two protective projections are symmetrically positioned on one side of the top of the plug-in plate, forming a U-shaped structure. These projections cover the ends of the terminal blocks. This arrangement prevents the terminal ends from coming into direct contact during assembly, thus reducing wear and increasing service life. Furthermore, the outer edges of the projections are rounded to facilitate assembly.A reverse polarity protection block is located on the outer surface of the U-shaped top of the plugboard. When the reverse polarity protection block is correctly installed in the reverse polarity protection groove, the positive and negative wiring of the two terminals is correct, thus preventing incorrect wiring. The U-shaped top of the plugboard is correctly installed in the U-shaped groove, with the V-shaped spring tab making sufficient contact with the terminals. In a preferred technical embodiment, the clamping wall is designed as an arc-shaped plate structure; an arc-shaped stop bar is arranged at the bottom of the drainage groove; symmetrical locking blocks are provided on the outer surface of the lamp head; when the lamp head is installed in the lower inner area of ​​the base body, the stop bar holds the locking blocks back; by clamping the lamp head using the clamping wall and limiting it with the stop bar, a stable installation of the light source in the lamp base is achieved. In a preferred technical embodiment, a funnel-shaped lower edge is provided on the lower part of the base body, wherein the funnel-shaped lower edge interacts with the upper part of the lamp housing to better protect the connection point between the light source and the lamp base. A light source, installed on one of the lamp bases described above, comprises a lamp housing and a light core located inside the lamp housing; a tubular lamp head is provided at the upper end of the lamp housing; a rubber plug is installed in the lamp head; two plug-in openings are formed in the rubber plug; the light core is electrically connected to two terminals, the terminals protruding from the plug-in openings; a plug-in plate is arranged on one side of the terminals on the upper end face of the rubber plug; two protective projections are symmetrically provided on one side of the top of the plug-in plate, so that the top of the plug-in plate is formed as a U-shaped structure; the protective projections cover the ends of the terminals; a reverse polarity protection block is arranged on the outer surface of the U-shaped top of the plug-in plate;When the reverse polarity protection block is properly installed in the reverse polarity protection groove, the U-shaped top of the plugboard is properly installed in the U-shaped groove. In a preferred technical embodiment, a potting layer is formed within the lamp head above the rubber stopper by potting; the side of the plugboard that is near the terminals is provided with a clearance groove, and the back of the plugboard has two symmetrically arranged adhesive flow openings; when adhesive is injected into the lamp head, the adhesive flows through the adhesive flow openings into the clearance groove, so that the terminals are firmly bonded to the side of the plugboard; this ensures that the terminals adhere stably to the side of the plugboard 821. In a preferred technical embodiment, the outside of the lamp head is symmetrically provided with locking blocks; when the lamp head is installed on the lower inner base of the body, the locking blocks are blocked by the stop strips; this enables the stable mounting of the light source in the lamp base. A string of lights assembly comprising lamp leads, wherein any one of the above-mentioned lamp bases is installed on the lamp lead, and any one of the above-mentioned light sources is installed on the lamp base; the lamp lead is installed in the lamp lead positioning slot provided in the upper part of the contact pin seat, and when the base cap is fitted on the upper end of the base body, the positioning pressure block presses the lamp lead into the lamp lead positioning slot so that the contact pin pierces the outer insulation of the lamp lead and touches the inner lead; the end of the lamp lead is connected to a waterproof connector which is electrically connected to the power control unit. The advantageous effects of the present invention are as follows: 1. The present invention has clamping walls evenly distributed in a ring on the inside of the base body. Drainage grooves formed between each pair of adjacent clamping walls ensure that rainwater penetrating the base body flows smoothly away via the drainage grooves, preventing the accumulation of rainwater at the top of the lamp head and preventing contact with the terminals, thereby increasing safety. At the same time, the base cap covers the upper surface of the base body, reducing the likelihood of rainwater penetrating the base body and improving water resistance. 2.The present invention employs a contact method in which the V-shaped spring tab presses against the side surface of the terminal block, thereby preventing contact disturbances caused by a snap-fit ​​connection and ensuring good contact and reliable current conduction. A positioning tab is arranged on one side of the strip-shaped extension tab and is mounted in the positioning tab groove to fix the position of the V-shaped spring tab, ensuring stable and complete contact with the terminal block and maintaining conductivity stability. Additionally, protective projections are provided that cover the end of the terminal block, preventing direct contact between the terminal ends during installation, thus reducing wear and increasing service life.The present invention has reverse polarity protection blocks on the outside of the U-shaped upper end of the plugboard; when the reverse polarity protection blocks are inserted into the reverse polarity protection groove, the positive and negative pole wiring of the two terminals is correct, thus preventing reverse polarity. Fig. 1 is a schematic structural view of a lamp base according to the invention. Fig. 2 is a schematic structural view of the lamp base shown in Fig. 1 without the base cap mounted. Fig. 3 is a top view of Fig. 2. Fig. 4 is an enlarged view of part A in Fig. 3. Fig. 5 is a bottom view of Fig. 2. Fig. 6 is an enlarged view of part B in Fig. 5. Fig. 7 is a schematic structural view of the base body of a lamp base according to the invention. Fig. 8 is a top view of Fig. 7. Fig. 9 is a bottom view of Fig. 7. Fig. 10 is a schematic representation of the relative positions of two contact pins in the base body of a lamp base according to the invention. Fig. 11 is a schematic structural view of the base cap of a lamp base according to the invention. Fig. 12 is a schematic structural view of a light source according to the invention. Fig. 13 is an exploded view of Fig. 12.Figure 14 is an enlarged view of part C in Figure 13. Figure 15 is a schematic structural view of the connection of two contact pins with two terminals during the mutual assembly of a light source and a lamp base according to the invention. Figure 16 is a schematic structural view of the mutual assembly of a light source and a lamp base according to the invention. Figure 17 is a schematic structural view of a string of lights assembly according to the invention. Figure 18 is an enlarged view of part D in Figure 17. Example implementation: As shown in Figs. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 to 11, this embodiment provides a lamp base, a light source, and a string of lights assembly comprising the following: a base body 1, the upper inner region of which is provided with a contact pin seat 11. The contact pin seat 11 is cuboid in shape overall, its four upper corners are integrally connected to the upper inner region of the base body 1, and the four side surfaces of the contact pin seat 11 each have a gap to the upper inner region of the base body 1. The upper region of the contact pin seat 11 is provided with a lamp wire positioning slot 111, which extends through the side wall of the base body 1. In the inner ring-shaped area of ​​the base body 1, several clamping walls 12 are evenly arranged for clamping the lamp head 81.Between each pair of the clamping walls 12, a drainage groove 13 is formed, allowing water to drain from the outer surface of the lamp head 81. This prevents rainwater from accumulating on the top of the lamp head 81, avoids contact with the terminals, and increases safety. In this embodiment, four clamping walls 12 are provided, and four drainage grooves 13 are arranged accordingly. The four upper corners of the contact pin seat 11 correspond to the four clamping walls 12, and the four side surfaces of the contact pin seat 11 correspond to the positions of the four drainage grooves 13. This allows any rainwater that penetrates the contact pin seat to drain away easily through the drainage grooves 13, preventing it from accumulating on the top of the contact pin seat 11. The base cap 2 is provided with a positioning pressure block 21 at its lower end; in addition, two contact pins 3 are mounted on the contact pin seat 11. When the base cap 2 is installed on the upper part of the base body 1, the positioning pressure block 21 presses the lamp cable 9 firmly into the lamp cable positioning slot 111, so that the contact pins 3 penetrate the outer insulation of the lamp cable 9 and make contact with the inner conductors, thus enabling an electrical connection with the lamp cable 9. At the same time, the base cap 2 seals the top of the base body 1, thereby reducing the likelihood of rainwater ingress into the base body 1 and increasing its water resistance. Furthermore, as shown in Fig. 2 and Fig. 7, an upper arcuate slot 112 is arranged on the lower inner surface of the lamp lead positioning slot 111, extending into the base body 1 to allow for a close fit of the lamp lead 9. A lower arcuate slot 211 is arranged on the lower surface of the positioning pressure block 21; the upper arcuate slot 112 fits the underside of the lamp lead 9, and the lower arcuate slot 211 fits the top side of the lamp lead 9, so that the positioning pressure block 21 and the inner surface of the lamp lead positioning slot 111 are in close contact with the lamp lead 9. Furthermore, as shown in Fig. 11, the underside of the base cap 2 is provided with two symmetrical L-shaped locking hooks 22, while in the upper inner area of ​​the base body 1, two symmetrical locking projections 14 are arranged, located opposite the upper side surfaces of the drainage grooves 13. When the two L-shaped locking hooks 22 engage with the two locking projections 14, the positioning pressure block 21 presses the lamp lead 9 firmly in place; the engagement of the L-shaped locking hooks 22 with the locking projections 14 ensures stable mounting of the base cap 2 as well as convenient disassembly. Furthermore, as shown in Fig. 11, a downwardly extending S-shaped suspension hook 23 is attached to the side surface of the base cap 2, located outside the base body 1; the arrangement of the S-shaped suspension hook 23 facilitates suspension. At the same time, the outside of the base cap 2 is provided with a projection corresponding to the position of the S-shaped suspension hook 23, so that in the resting state, the curved part of the S-shaped suspension hook 23 contacts the outside of the projection to ensure stability when suspended. Furthermore, as shown in Fig. 11, the contact pin 3 comprises a U-shaped clamping plate 31 and a V-shaped spring tab 32. A piercing tongue 33 is integrated on the outer sides of both side plates of the U-shaped clamping plate 31; that is, the piercing tongue 33 is located on one side of the U-shaped clamping plate 31. A strip-shaped extension tab 311, extending vertically downwards, is integrated on the lower part of the base plate of the U-shaped clamping plate 31. A positioning tab 312 is integrated on one side of the lower end of the strip-shaped extension tab 311; the strip-shaped extension tab 311 and the positioning tab 312 together form an L-shaped structure. The V-shaped spring tab 32, which serves to establish sufficient contact with the terminal block 831, is integrated on the upper part of the positioning tab 312.By using the V-shaped spring tab 32 to contact the terminal 831, better contact stability is achieved compared to a snap-fit ​​connection between contact pin 3 and terminal 831; with the snap-fit ​​connection, frequent insertion and removal leads to wear of the contact surface, which can cause contact problems, whereas the elasticity of the V-shaped spring tab 32 ensures a more stable contact with the terminal 831 and guarantees a reliable electrical connection. Furthermore, as shown in Figs. 2, 3, 4, 5, 6, 7, 8 to 9, a card plate groove 113 is arranged symmetrically on the lower inner surface of the lamp cable positioning slot 111, with a support block 114 attached to one side of the inner surface. The U-shaped clamping plate 31 and the piercing tongue 33 are mounted in the card plate groove 113, with the support block 114 supporting the lower end of the piercing tongue 33. The pointed part of the piercing tongue 33 projects into the lamp cable positioning slot 111 to pierce the lamp cable 9. On the lower inner surface of the lamp conductor positioning slot 111, symmetrically arranged vertical bores 115 are connected to the card plate grooves 113; the cross-section of the vertical bores 115 is L-shaped. The strip-shaped extension tab 311, the positioning tab 312, and the V-shaped spring tab 32 are mounted in the vertical bore 115.A positioning tab groove 116 is arranged on one side of the vertical bore 115, in which the side of the positioning tab 312 is precisely fitted. If the V-shaped spring tab 32 is arranged directly at the end of the strip-shaped extension tab 311, its position can easily shift after repeated insertion and removal, leading to poor contact with the terminal block 831. In this embodiment, a positioning tab 312 is attached to the strip-shaped extension tab 311 and is installed in the positioning tab groove 116. This fixes the position of the V-shaped spring tab 32, ensures stable and sufficient contact with the terminal block 831, and guarantees conductivity stability. Furthermore, as shown in Figs. 2, 3, 4, 5, 6, 7, 8 to 9, a U-shaped groove 117 is arranged on the underside of the contact pin seat 11, the lateral grooves of which are each connected to the vertical bore 115. This means that when the individual parts of the contact pin 3 are mounted in the card plate groove 113 and the vertical bore 115, the V-shaped spring tab 32 projects into the lateral grooves of the U-shaped groove 117, so that the terminal blocks 831 mounted in the lateral grooves of the U-shaped groove 117 have corresponding contact with the V-shaped spring tab 32. A reverse polarity protection groove 118 is arranged on the underside of the contact pin seat 11, which is connected to the bottom groove of the U-shaped groove 117. Inside the lamp head 81 a rubber stopper 82 is installed, the top of which has two terminal blocks 831 electrically connected to the light core 83.A plug-in board 821 is arranged on the upper side of the rubber plug 82, on the side of the terminal blocks 831. The upper surface of the plug-in board 821 is symmetrically provided with two protective projections 8211, forming a U-shaped top surface. The protective projections 8211 cover the ends of the terminal blocks 831, thus preventing direct contact between the terminal ends during installation, reducing wear, and increasing service life. Furthermore, the outer edges of the protective projections 8211 are rounded to facilitate assembly. The outer surface of the U-shaped top surface of the plug-in board 821 is provided with a reverse polarity protection block 822. When the reverse polarity protection block 822 is installed in the reverse polarity protection groove 118, the correct positive and negative wiring of the two terminal blocks 831 is ensured, thus preventing incorrect connection.The U-shaped top of the plugboard 821 is fitted precisely into the U-shaped groove 117, and the V-shaped spring tab 32 has full contact with the terminals 831. Furthermore, as shown in Figs. 3, 5, 7, 8 to 9, the clamping wall 12 is arc-shaped and conforms to the outer surface of the lamp head 81. An arc-shaped stop bar 131 is arranged at the bottom of the drainage groove 13, and the outer surface of the lamp head 81 is symmetrically provided with locking blocks 811. When the lamp head 81 is mounted on the lower inner area of ​​the base body 1, the locking block 811 is blocked by the stop bar 131. The clamping wall 12 secures the lamp head 81, and at the same time, the stop bar 131 ensures that the lamp is stably installed in the lamp base. Furthermore, as shown in Fig. 1, a funnel-shaped lower edge 15 is arranged on the bottom of the base body 1, which interacts with the top of the lamp housing 8 to better protect the connection area between the light source and the lamp base. A light source, see Fig. 12, Fig. 13, Fig. 14, Fig. 15 to Fig. 16, is installed in one of the lamp sockets mentioned above. The light source comprises a lamp housing 8 and a light core 83 arranged inside the lamp housing 8. The lamp housing 8 is provided at the top with a cylindrical lamp head 81 into which a rubber plug 82 is inserted. The rubber plug 82 has two plug-in openings, and the terminals 831 of the light core 83 are electrically connected and protrude through the plug-in openings. A plug-in plate 821 is arranged on the top of the rubber plug 82, on the side of the terminals 831. The upper side of the plug-in plate 821 is symmetrically provided with two protective projections 8211, so that the upper side of the plug-in plate 821 forms a U-shaped top.The protective projections 8211 cover the ends of the terminal blocks 831, and the outside of the U-shaped top of the plugboard 821 is provided with a reverse polarity protection block 822; when the reverse polarity protection block 822 fits into the reverse polarity protection groove 118, the U-shaped top of the plugboard 821 is positioned in the U-shaped groove 117. Furthermore, as shown in Figs. 12, 13 to 14, a potting layer 84 is formed in the lamp head 81 above the rubber stopper 82 by potting. A clearance groove 8212 is provided on the side of the plugboard 821 facing the terminals 831, and two adhesive flow openings 8213 are arranged symmetrically on the back of the plugboard 821. When adhesive is injected into the lamp head 81, the adhesive flows through the adhesive flow openings 8213 into the clearance groove 8212, so that the terminals 831 are bonded to the side surface of the plugboard 821, ensuring a stable bond. Furthermore, as shown in Fig. 12, the outside of the lamp head 81 is symmetrically provided with locking blocks 811; when the lamp head 81 is mounted on the lower inner area of ​​the base body 1, the locking blocks 811 are blocked by the stop strips 131, thereby achieving a stable installation of the light source in the lamp base. A string of lights assembly, as shown in Figs. 17 and 18, comprises a lamp cord 9 on which any of the above-mentioned lamp sockets are installed, and any of the above-mentioned light sources are mounted on the lamp socket. The lamp cord 9 is positioned in the lamp cord positioning slot 111, which is formed at the upper end of the contact pin seat 11. When the socket cap 2 is mounted on the upper end of the base body 1, the positioning pressure block 21 presses the lamp cord 9 firmly into the lamp cord positioning slot 111, so that the contact pin 3 penetrates the outer sheath of the lamp cord 9 and contacts the inner conductor; the lamp cord 9 is connected at its end to a waterproof connector 91, which is electrically connected to the power control unit 92. Reference symbol list 1 Base body 11 Contact pin seat 111 Lamp lead positioning slot 112 Upper arcuate slot 113 Card plate groove 114 Support block 115 Vertical bore 116 Positioning tab groove 117 U-shaped groove 118 Reverse polarity protection groove 12 Clamping wall 13 Drainage groove 131 Stop strip 14 Detent projection 15 Funnel-shaped lower edge 2 Base cap 21 Positioning pressure block 211 Lower arcuate slot 22 L-shaped detent hook 23 S-shaped suspension hook 3 Contact pin 31 U-shaped clamping plate 311 Strip-shaped extension tab 312 Positioning tab 32 V-shaped spring tab 33 Piercing tongue 8 Lamp housing 81 Lamp head 811 Detent block 82 Rubber stopper 821 Plug-in plate 8211 Protective projection 8212 8213 Free space groove 822 Adhesive flow opening 822 Reverse polarity protection block 83 Light core 831 Connection terminal 84 Potting layer 9 Lamp cable 91 Waterproof connector 92 Power control unit

Claims

Lamp base comprising: a base body (1) in the upper inner region of which a contact pin seat (11) is arranged, wherein a lamp lead positioning slot (111) is arranged on the upper side of the contact pin seat (11) and extends through the side wall of the base body (1); wherein several clamping walls (12) are arranged uniformly in an annular arrangement in the inner region of the base body (1) and clamp the lamp head (81), wherein a drainage groove (13) is formed between two adjacent clamping walls (12) so that water can drain from the outer wall of the lamp head (81); a base cap (2) whose underside is provided with a positioning pressure block (21); and two contact pins (3) mounted on the contact pin seat (11);wherein, when the base cap (2) is mounted on the upper part of the base body (1), the positioning pressure block (21) clamps the lamp lead (9) in the lamp lead positioning slot (111), so that the contact pins (3) penetrate the outer skin of the lamp lead (9) and touch the inner leads, while the base cap (2) covers the top of the base body (1). Lamp base according to claim 1, characterized in that an upper arc-shaped slot (112) is arranged in the bottom of the lamp lead positioning slot (111) and a lower arc-shaped slot (211) is arranged on the lower bottom surface of the positioning pressure block (21); the upper arc-shaped slot (112) fits the underside of the lamp lead (9), the lower arc-shaped slot (211) fits the upper side surface of the lamp lead (9), so that the positioning pressure block (21) and the inner bottom of the lamp lead positioning slot (111) lie close to the lamp lead (9). Lamp base according to claim 2, characterized in that the lower bottom surface of the base cap (2) has two symmetrical L-shaped locking hooks (22), while the upper inner area of ​​the base body (1) has two symmetrical locking projections (14) located on the opposite upper side surfaces of the drainage groove (13); when the two L-shaped locking hooks (22) engage correspondingly with the two locking projections (14), the positioning pressure block (21) clamps the lamp cable (9). Lamp base according to claim 3, characterized in that the side surface of the base cap (2) has a downwardly extending S-shaped suspension hook (23) which is located outside the base body (1). Lamp base according to claim 4, characterized in that the contact pin (3) comprises a U-shaped clamping plate (31) and a V-shaped spring tab (32), wherein studs (33) are uniformly arranged on both outer plates of the U-shaped clamping plate (31), a one-piece formed strip-shaped extension tab (311) is arranged on the underside of the U-shaped clamping plate (31), a uniformly formed positioning tab (312) is arranged on one side of the underside of the strip-shaped extension tab (311), on the upper side of which the V-shaped spring tab (32) is uniformly arranged. Lamp base according to claim 5, wherein card plate grooves (113) are arranged symmetrically in the inner base of the lamp lead positioning slot (111), a support block (114) being provided on one side of the inner base of the card plate groove (113); the U-shaped clamping plate (31) and the piercing tongue (33) are installed in the card plate groove (113), the support block (114) correspondingly supporting the lower end of the piercing tongue (33); wherein, furthermore, vertical bores (115) are arranged symmetrically in the inner base of the lamp lead positioning slot (111), which are connected to the card plate grooves (113); wherein the strip-shaped extension tab (311), the positioning tab (312) and the V-shaped spring tab (32) are mounted in the vertical bores (115);wherein a positioning tab groove (116) is arranged on one side of the vertical bore (115), wherein a side edge of the positioning tab (312) is fitted into the positioning tab groove (116). Lamp base according to claim 6, wherein a U-shaped groove (117) is arranged on the lower bottom surface of the contact pin seat (11), wherein the two side grooves of the U-shaped groove (117) are each connected to the vertical bores (115), and wherein a reverse polarity protection groove (118) connected to the bottom groove of the U-shaped groove (117) is arranged on the lower bottom surface of the contact pin seat (11); wherein a rubber plug (82) is installed inside the lamp head (81), wherein two connecting terminals (831) electrically connected to the light core (83) project upwards from its upper end face; wherein a plug-in plate (821) is arranged on one side of the upper end face of the rubber plug (82), next to the connecting terminals (831); wherein two protective projections (8211) are symmetrically provided on one side of the top of the plug-in board (821), so that the top of the plug-in board (821) forms a U-shape;wherein the protective projections (8211) cover the ends of the terminals (831); wherein a reverse polarity protection block (822) is arranged on the outer side face of the U-shaped top of the plugboard (821); wherein, when the reverse polarity protection block (822) is fitted into the reverse polarity protection groove (118), the U-shaped top of the plugboard (821) is fitted into the U-shaped groove (117), and wherein the V-shaped spring tab (32) is in full contact with the terminals (831). Lamp base according to claim 7, characterized in that the clamping wall (12) is designed as an arc-shaped plate structure, an arc-shaped stop bar (131) is arranged at the bottom of the drainage groove (13) and symmetrically locking blocks (811) are provided on the outer sides of the lamp head (81); when the lamp head (81) is installed on the lower inner area of ​​the base body (1), the stop bar (131) blocks the locking blocks (811). Lamp base according to claim 8, characterized in that a funnel-shaped lower edge (15) is arranged on the lower area of ​​the base body (1), which interacts with the top of the lamp housing (8). A light source installed on the lamp base according to claim 9, wherein the light source comprises a lamp housing (8) and a light core (83) arranged inside the lamp housing (8); wherein a tubular lamp head (81) is arranged on the top of the lamp housing (8), in which a rubber stopper (82) is installed; wherein two plug-in openings are formed in the rubber stopper (82); wherein two terminal blocks (831) are electrically connected to the light core (83), the terminal blocks (831) protruding from the plug-in openings; wherein a plug-in plate (821) is arranged on one side of the upper end face of the rubber stopper (82), next to the terminal blocks (831); wherein two protective projections (8211) are symmetrically provided on one side of the top of the plug-in plate (821), such that the top of the plug-in plate (821) forms a U-shape; wherein the protective projections (8211) cover the ends of the terminal blocks (831);wherein a reverse polarity protection block (822) is arranged on the outer side surface of the U-shaped top of the plugboard (821); wherein, when the reverse polarity protection block (822) is fitted into the reverse polarity protection groove (118), the U-shaped top of the plugboard (821) is fitted into the U-shaped groove (117). Lamp according to claim 10, characterized in that a potting layer (84) is formed inside the lamp head (81) above the rubber stopper (82) by potting; wherein a clearance groove (8212) is arranged on the side surface of the plugboard (821) facing the terminals (831); wherein two adhesive flow openings (8213) are arranged symmetrically on the rear side surface of the plugboard (821); wherein, when adhesive is injected into the interior of the lamp head (81), the adhesive flows through the adhesive flow openings (8213) and fills the clearance groove (8212), so that the terminals (831) are bonded to the side surface of the plugboard (821). Lamp according to claim 11, characterized in that locking blocks (811) are arranged symmetrically on the outer sides of the lamp head (81); when the lamp head (81) is installed in the lower inner area of ​​the base body (1), the locking blocks (811) are blocked by the stop bar (131). A string of lights assembly comprising a lamp cord (9), wherein the lamp base according to claim 9 is installed on the lamp cord (9) and the light source according to claim 12 is installed on the lamp base, wherein the lamp cord (9) is arranged in the lamp cord positioning slot (111) formed on the top of the contact pin seat (11); wherein, when the base cap (2) is installed on the upper part of the base body (1), the positioning pressure block (21) clamps the lamp cord (9) arranged in the lamp cord positioning slot (111) so that the contact pins (3) penetrate the outer skin of the lamp cord (9) and contact the inner conductors; wherein the end of the lamp cord (9) is connected to a waterproof connector (91) which is electrically connected to a current control device (92).

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