Surface-mounted LED lamp and lamp string thereof

Abstract

The utility model relates to the technical field of lamps, and discloses a patch type LED lamp and a lamp string thereof, the lamp comprises a lamp holder and a lampshade, the lampshade is connected with the lamp holder, and the patch type LED lamp further comprises a PCB lamp panel and a branch power line; a containing position used for installing the PCB lamp panel is arranged in the lamp holder, and a threaded connector is formed in the end of the lamp holder. One end of the branch power line penetrates through the threaded connector, extends into the lamp holder and is electrically connected with the PCB lamp panel. Compared with the prior art, the LED lamp has the advantages that the connection mode of the lamp holder and the branch power line is improved, the lamp holder and the branch power line are detachably connected through the threaded connector, the waterproof performance of the bulb can be improved, the service life of the bulb and the service life of the lamp string can be prolonged, and the bulb can be conveniently assembled and disassembled; 2, the overall structure is simple, and the preparation cost is low; the branch power line and the PCB lamp panel are assembled in the mode that the terminal base is connected with the connecting terminal in an inserted mode, so that the interior of the bulb can be maintained, the PCB lamp panel can be used repeatedly, and the use cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of light bulbs, in particular to a SMD type LED lamp and a lamp string thereof. Background Art

[0002] Light bulbs are an indispensable lighting tool in people's daily work and production. With the progress of society, light bulbs have evolved from only providing lighting functions to now also having many uses such as "beautifying the environment, decoration" and so on.

[0003] The existing SMD light bulbs are assembled by coating glue to fix the lamp holder and the branch power line. However, the waterproof performance of the light bulbs assembled in this way is not high. Especially when the light bulbs are used outdoors for a long time, the light bulbs are prone to debonding, resulting in a short service life of the light bulbs. More importantly, if one light bulb is damaged, the entire decorative light string will be scrapped and unusable, which brings a lot of inconvenience to users. In view of this, the inventor has made a new invention. Utility Model Content

[0004] The utility model aims to provide a SMD LED lamp and a lamp string thereof, which have the characteristics of long service life, in view of the deficiencies of the prior art.

[0005] To achieve the above-mentioned purpose, the utility model is a chip-type LED lamp, comprising a lamp holder and a lampshade, wherein the lampshade is connected to the lamp holder, and also comprises a PCB lamp board and a branch power cord; a plurality of LED lamp beads are electrically connected to the surface of the PCB lamp board; a receiving position for installing the PCB lamp board is provided inside the lamp holder, and a threaded interface is provided at the end of the lamp holder; one end of the branch power cord extends into the interior of the lamp holder through the threaded interface and is electrically connected to the PCB lamp board; the branch power cord is injection-molded with a threaded joint, and the threaded joint is connected to the threaded interface for assembly and waterproofing.

[0006] Preferably, the PCB lamp board is also provided with a terminal seat; one end of the branch power line extending into the lamp seat is provided with a connecting terminal, and the connecting terminal is plugged into the terminal seat.

[0007] Preferably, the terminal seat is arranged on the upper surface of the PCB light board, a notch is opened on one side of the PCB light board, and the connecting terminal passes through the notch and is inserted into the terminal seat.

[0008] Preferably, the threaded joint at least comprises an assembling portion and a threaded portion; the threaded portion is threadedly connected to the threaded interface; and a platform portion for sealing the threaded interface is provided between the assembling portion and the threaded portion.

[0009] Preferably, a sealing ring for waterproofing is sleeved between the threaded portion and the assembling portion.

[0010] Preferably, an annular clamping portion is provided above the accommodating position; an annular clamping groove is provided at the bottom end of the lampshade, and the annular clamping portion is matched with the annular clamping groove.

[0011] Preferably, the bottom of the lampshade abuts against the PCB lamp board.

[0012] Preferably, the accommodating position is provided with a plurality of positioning blocks, and the PCB lamp board is provided with positioning grooves adapted to the positioning blocks.

[0013] The utility model also includes a light string, including multiple LED lamps, a main power cord, a male plug, a female socket and multiple light string connectors; the male plug and the female socket are respectively arranged at two ends of the main power cord; the multiple light string connectors are evenly distributed in the middle of the main power cord; the branch power cord extends into the interior of the light string connector and is electrically connected to the main power cord.

[0014] Preferably, the branch power line includes at least a first positive line and a first negative line; the main power line includes at least a second positive line and a second negative line; the first positive line is electrically connected to the second positive line by butt welding, and the first negative line is electrically connected to the second negative line by butt welding.

[0015] Beneficial effects: Compared with the prior art, the utility model is a SMD LED lamp and a light string thereof, which has the following advantages: 1. The connection method between the lamp holder and the branch power cord is improved, so that the lamp holder and the branch power cord are detachably connected through a threaded joint, which can not only improve the waterproof performance of the bulb, extend the service life of the bulb and the light string, but also facilitate the assembly and disassembly of the bulb; 2. The overall structure is simple and the preparation cost is low; 3. The branch power cord and the PCB lamp board are assembled by plugging the terminal holder and the connecting terminal, so that the inside of the bulb can be repaired, and the PCB lamp board can be used multiple times, effectively reducing the use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the lamp of the present utility model.

[0017] Figure 2 It is a schematic diagram of the longitudinal cross-section structure of the lamp of the present utility model.

[0018] Figure 3 It is a schematic diagram of the longitudinal cross-section structure of the lamp holder and the lamp shade of the utility model.

[0019] Figure 4 The utility model is a schematic diagram of the lamp holder and the threaded joint structure.

[0020] Figure 5 This is a schematic diagram of the PCB lamp board structure of the utility model.

[0021] Figure 6This is a schematic diagram of the light string structure of the utility model.

[0022] Figure 7 It is a schematic diagram of the structure of the connection between the main power line and the branch power line of the utility model.

[0023] Reference numerals include:

[0024] Lamp holder--1, accommodating position--11, threaded interface--12, annular clamping part--13, positioning block--14, lamp cover--2, annular clamping groove--21, PCB lamp board--3, LED lamp beads--31, terminal seat--32, notch--33, positioning groove--34, branch power cord--4, threaded connector--41, connecting terminal--42, assembly part--43, threaded part--44, platform part--45, sealing ring--46, first positive line--47, first negative line--48, main power cord--5, second positive line--51, second negative line--52, male plug--6, female socket--7, light string connector--8, hanging ear--9. DETAILED DESCRIPTION

[0025] The following is combined with Figures 1 to 7 The utility model is described in detail.

[0026] The utility model discloses a patch type LED lamp, comprising a lamp holder 1 and a lamp shade 2, wherein the lamp shade 2 is connected to the lamp holder 1, and further comprising a PCB lamp board 3 and a branch power line 4; a plurality of LED lamp beads 31 are electrically connected to the surface of the PCB lamp board 3; a receiving position 11 for installing the PCB lamp board 3 is provided inside the lamp holder 1, and a threaded interface 12 is provided at the end of the lamp holder 1; one end of the branch power line 4 passes through the threaded interface 12 and extends into the interior of the lamp holder 1 and is electrically connected to the PCB lamp board 3; a threaded joint 41 is injection molded on the branch power line 4, and a seal between the screw joint 41 and the branch power line 4 can be formed by injection molding; the threaded joint 41 and the threaded interface 12 are threadedly connected to assemble the lamp holder 1 and the branch power line 4.

[0027] The utility model improves the connection method between the lamp holder 1 and the branch power line 4, so that the lamp holder 1 and the branch power line 4 can be detachably connected through the threaded joint 41, which can effectively avoid the debonding of the lamp, improve the waterproof performance of the bulb, extend the service life of the bulb and the light string, and improve the assembly and disassembly efficiency of the lamp; at the same time, the overall structure of the lamp is simple and the preparation cost is low. It adopts fully automated assembly, with high assembly efficiency and low labor cost.

[0028] In order to further improve the technical solution, the inventor also provides a terminal seat 32 on the PCB lamp board 3; the end of the branch power line 4 extending into the lamp holder 1 is provided with a connecting terminal 42, and the connecting terminal 42 is plugged into the terminal seat 32. The technical solution improves the electrical connection between the branch power line 4 and the PCB lamp board 3 to an assembly method of plugging the terminal seat 32 and the connecting terminal 42. The assembly method is detachable, so that the inside of the lamp can be repaired, and the PCB lamp board 3 can be reused many times, effectively reducing the use cost.

[0029] To facilitate the disassembly and assembly of the connection terminal 42 , the terminal seat 32 is arranged on the upper surface of the PCB light board 3 , and a notch 33 is opened on one side of the PCB light board 3 , and the connection terminal 42 passes through the notch 33 and is inserted into the terminal seat 32 .

[0030] In the present invention, the threaded joint 41 at least includes an assembly portion 43 and a threaded portion 44; the threaded portion 44 is threadedly connected to the threaded interface 12; a platform portion 45 for sealing the threaded interface 12 is provided between the assembly portion 43 and the threaded portion 44. The assembly portion 43 facilitates a human hand or a manipulator to grasp the branch power line 4, and the threaded joint 41 is formed of a plastic material as a whole. After the threaded joint 41 is assembled, the platform portion 45 just abuts against the opening of the threaded interface 12, which is used to seal the threaded interface 12, and significantly improves the waterproof performance of the light bulb.

[0031] To further improve the waterproof performance of the bulb, a sealing ring 46 for sealing and waterproofing is sleeved between the threaded portion 44 and the assembly portion 43. When the threaded joint 41 is assembled, the sealing ring 46 is squeezed to deform and fill the connection gap between the threaded joint 41 and the lamp holder 1.

[0032] Preferably, an annular clamping portion 13 is provided above the accommodation position 11; an annular clamping groove 21 is provided at the bottom end of the lampshade 2, and the annular clamping portion 13 is adapted to the annular clamping groove 21. The lampshade 2 is directly buckled with the lamp holder 1 through the annular clamping groove 21, and this structure facilitates the removal of the lampshade 2 and the inspection of the internal condition of the lamp.

[0033] When the lampshade 2 is inserted into the top of the lamp holder 1 , the bottom of the lampshade 2 just abuts against the upper surface of the PCB lamp board 3 , thereby achieving secondary fixation of the PCB lamp board 3 .

[0034] Preferably, the accommodation position 11 is further provided with a plurality of positioning blocks 14, and the PCB light board 3 is provided with positioning grooves 34 adapted to the positioning blocks 14. When the PCB light board 3 is placed in the accommodation position 11, the positioning grooves 34 of the PCB light board 3 simultaneously accommodate the positioning blocks 14, and this structure is used to position the PCB light board 3 to prevent the PCB light board 3 from shifting and affecting the quality of the lamp.

[0035] The utility model also includes a light string, including the above-mentioned multiple LED lamps, and also includes a main power line 5, a male plug 6, a female socket 7 and multiple light string connectors 8; Figure 6 As shown, the male plug 6 and the female socket 7 are respectively arranged at the two ends of the main power line 5, for electrically connecting the light string with an external power source or realizing the connection and conduction between the light strings; the multiple light string connectors 8 are evenly distributed in the middle of the main power line 5; the branch power line 4 extends into the light string connector 8 and is electrically connected to the main power line 5. The light string of this technical solution has the advantages of the above-mentioned LED lamps, and has high waterproofness. At the same time, the lamps on the light string can be repaired and replaced, which can not only significantly extend the service life of the light string, but also reduce the use cost of the light string.

[0036] In order to facilitate hanging the light string outdoors, the light string connector 8 and the lamp holder 1 are both provided with hanging ears 9 .

[0037] like Figure 7 As shown, the branch power line 4 includes at least a first positive line 47 and a first negative line 48; the main power line 5 includes at least a second positive line 51 and a second negative line 52; to further optimize the performance of the light string, the first positive line 47 is electrically connected to the second positive line 51 by welding, and the first negative line 48 is electrically connected to the second negative line 52 by welding. Compared with the traditional copper terminal-wrapped electrical connection between the pole line of the light string line and the lamp, the pole line is electrically connected to the light string line by welding, which can further ensure that the pole line is firmly connected to the lamp whether it is during the second injection molding of the light string connector 8 or during normal outdoor use, and can effectively prevent the lamp from having poor contact.

[0038] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A SMD LED lamp, comprising a lamp holder (1) and a lamp shade (2), wherein the lamp shade (2) is connected to the lamp holder (1), characterized in that: It also includes a PCB lamp board (3) and a branch power line (4); the surface of the PCB lamp board (3) is electrically connected to a plurality of LED lamp beads (31); a receiving position (11) for installing the PCB lamp board (3) is provided inside the lamp holder (1), and a threaded interface (12) is provided at the end of the lamp holder (1); one end of the branch power line (4) passes through the threaded interface (12) and extends into the interior of the lamp holder (1) and is electrically connected to the PCB lamp board (3); the branch power line (4) is injection molded with a threaded joint (41), and the threaded joint (41) is connected to the threaded interface (12) for assembly and waterproofing.

2. A SMD LED lamp according to claim 1, characterized in that: The PCB lamp board (3) is also provided with a terminal seat (32); one end of the branch power line (4) extending into the lamp seat (1) is provided with a connecting terminal (42), and the connecting terminal (42) is plugged into the terminal seat (32).

3. A SMD LED lamp according to claim 2, characterized in that: The terminal seat (32) is arranged on the upper surface of the PCB light board (3), a notch (33) is provided on one side of the PCB light board (3), and the connecting terminal (42) passes through the notch (33) and is inserted into the terminal seat (32).

4. The SMD LED lamp according to claim 1, characterized in that: The threaded joint (41) comprises at least an assembly portion (43) and a threaded portion (44); the threaded portion (44) is threadedly connected to a threaded interface (12); and a platform portion (45) for sealing the threaded interface (12) is provided between the assembly portion (43) and the threaded portion (44).

5. The SMD LED lamp according to claim 4, characterized in that: A sealing ring (46) for sealing and waterproofing is also sleeved between the threaded portion (44) and the assembly portion (43).

6. The SMD LED lamp according to claim 1, characterized in that: An annular clamping portion (13) is provided above the accommodation position (11); an annular clamping groove (21) is provided at the bottom end of the lampshade (2), and the annular clamping portion (13) is matched with the annular clamping groove (21).

7. The SMD LED lamp according to claim 6, characterized in that: The bottom of the lampshade (2) abuts against the PCB lamp board (3).

8. The SMD LED lamp according to claim 1, characterized in that: The accommodating position (11) is provided with a plurality of positioning blocks (14), and the PCB lamp board (3) is provided with positioning grooves (34) adapted to the positioning blocks (14).

9. A light string, characterized in that: It comprises a plurality of LED lamps as described in any one of claims 1 to 8, and also comprises a main power cord (5), a male plug (6), a female socket (7) and a plurality of light string connectors (8); the male plug (6) and the female socket (7) are respectively arranged at two ends of the main power cord (5); the plurality of light string connectors (8) are evenly distributed in the middle of the main power cord (5); the branch power cord (4) extends into the interior of the light string connector (8) and is electrically connected to the main power cord (5).

10. A light string according to claim 9, characterized in that: The branch power line (4) comprises at least a first positive line (47) and a first negative line (48); the main power line (5) comprises at least a second positive line (51) and a second negative line (52); the first positive line (47) is electrically connected to the second positive line (51) by means of butt welding, and the first negative line (48) is electrically connected to the second negative line (52) by means of butt welding.

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