A waterproof lamp holder for outdoor light string

Abstract

The present invention is applicable to the technical field of lighting equipment, and provides a waterproof lamp holder for an outdoor light string, comprising a plurality of lamp holder assemblies connected in series and a plurality of series devices connected in series between adjacent lamp holder assemblies, wherein the lamp holder assembly comprises a lamp holder part and an outdoor light body threadedly connected inside the lamp holder part; the waterproof lamp holder for the outdoor light string can prevent the entire structure from being affected by excessive temperature during use, and in the specific use and installation process, the electrical series connection process between adjacent mounting base plates can be achieved by simply flipping the existing structure, and the entire electrical series connection process does not require additional wiring operations to achieve the series connection process of the waterproof lamp holders of the outdoor lights, thereby simplifying the wiring process and bringing certain conveniences to users.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting equipment, and more particularly to a waterproof lamp holder for outdoor light strings. Background Art

[0002] The waterproof lamp holder for outdoor light string is one type of outdoor light, which is mainly composed of a power cord of a certain length and a plurality of waterproof lamp holders arranged on the power cord and electrically connected to the power cord, wherein the waterproof lamp holders are arranged in series at intervals on the power cord; thus, during the specific use of the outdoor light string, the outdoor light body can be connected to each waterproof lamp holder, and the power cord can be hung where lighting is required, so as to achieve the effect of large-area lighting and decoration around.

[0003] At present, the waterproof lamp holders for outdoor light strings on the market often have the following problems during the electrical series connection process:

[0004] In the process of electrically connecting the outdoor light body to the waterproof lamp holder used in the existing outdoor light strings, due to the lack of a certain waterproof structure at the electrical connection between the outdoor light body and the waterproof lamp holder, water from the outside can easily flow into the electrical connection between the outdoor light body and the waterproof lamp holder during use. At the same time, the outside water cannot be used for its own water cooling process during use, which can easily affect the subsequent use process. In addition, when multiple waterproof lamp holders are electrically connected in series or replaced, additional wiring operations are required, which makes the wiring operation process too complicated and brings certain inconveniences to users. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a waterproof lamp holder for outdoor light strings that can avoid the influence of excessive temperature on the use of the entire structure during use, and can realize the electrical series connection process between adjacent mounting base plates only through the flipping process of the existing structure. The entire electrical series connection process does not require additional wiring operations, and can realize the series connection process of outdoor light waterproof lamp holders, thereby simplifying the wiring process and bringing certain conveniences to users.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A waterproof lamp holder for an outdoor light string comprises a plurality of lamp holder assemblies connected in series and a plurality of series connection devices connected in series between adjacent lamp holder assemblies. The lamp holder assembly comprises a lamp holder part and an outdoor lamp body threadedly connected inside the lamp holder part.

[0008] The lamp holder comprises a mounting base plate, a waterproof cover is fixed on the top of the mounting base plate, a waterproof ring is fixed on the top of the waterproof cover, an electrical seat is electrically connected to the top of the mounting base plate inside the waterproof cover, and the electrical seat is threadedly connected to the outdoor lamp body.

[0009] A cooling cavity is arranged inside the waterproof cover, and a plurality of water outlet pipes connected to the cooling cavity are arranged in a circular array on the outer peripheral side of the waterproof cover, and a plurality of water guide grooves are opened in a circular array on the outer peripheral side of the waterproof cover, and a water inlet connected to the cooling cavity is arranged on the inner wall of the plurality of water guide grooves, one end of the water inlet is connected to a bell mouth, and a filter is arranged on the side surface around the bell mouth.

[0010] The present invention is further configured such that: two opposite side surfaces of the installation base plate are provided with connecting wires electrically connected to the electrical seat.

[0011] The two connecting wires extend outwards respectively.

[0012] The present invention is further configured such that two adjacent connecting wires are electrically connected via a series device.

[0013] The series device comprises a first semicircular shell, and a second semicircular shell is hingedly matched with the top of the first semicircular shell.

[0014] The present invention is further configured as follows: a first fixing plate is fixed to the outer peripheral side surface of the first semicircular shell, and a first fixing hole is penetrated through the top of the first fixing plate.

[0015] A second fixing plate is fixed to the outer peripheral side of the second semicircular shell, a second fixing hole is penetrated through the top of the second fixing plate, and the second fixing hole is fixedly connected to the first fixing hole by bolts.

[0016] The present invention is further configured as follows: conical waterproof sleeves are fixed to the inner wall of the first semicircular shell near both ends, and annular rubber sleeves are fixed to the opposite end surfaces of the two conical waterproof sleeves located outside the first semicircular shell.

[0017] The two conical waterproof sleeves are both fixed with semicircular waterproof pads on the other end surfaces located inside the first semicircular shell.

[0018] Two symmetrical waterproof strips are fixed on the surface of the first semicircular shell.

[0019] Semicircular grooves matching the two semicircular waterproof pads are provided inside the second semicircular shell near both ends, and two symmetrical rectangular grooves are provided on the surface of the second semicircular shell, and the two rectangular grooves are respectively matched with two waterproof strips.

[0020] The present invention is further configured as follows: a first conductive sheet is fixed to the inner wall of the first semicircular shell.

[0021] A second conductive sheet is fixed to the inner wall of the second semicircular shell.

[0022] Two symmetrical conductive pillars are fixed on the inner wall of the first conductive sheet, a first arc-shaped conductive plate is fixed on the top of the two conductive pillars, and a first conductive tooth is fixed on the inner wall of the first arc-shaped conductive plate.

[0023] The present invention is further configured as follows: two symmetrical conductive bottom plates are fixed to the inner wall of the second conductive sheet, guide grooves are provided on the tops of the two conductive bottom plates, U-shaped conductive vertical plates are fixed inside the two conductive bottom plates, and two symmetrical rectangular conductive frames are fixed to the inner wall of the second conductive sheet between the two conductive bottom plates.

[0024] The present invention is further configured as follows: a first conductive slider is slidably fitted inside the two guide grooves, a first conductive hinge seat is fixed on the top of the two first conductive sliders, and a second conductive hinge seat is fixed on the opposite side of the two first conductive sliders.

[0025] An elastic spring is fixed to one side of the first conductive sliding block and the inner wall of the guide groove.

[0026] The present invention is further configured as follows: a first I-shaped conductive slider is slidably matched inside the two U-shaped conductive vertical plates, and a third conductive hinge seat is fixed to the side surfaces of the two first I-shaped conductive sliders on opposite sides;

[0027] A second I-shaped conductive slider is slidably fitted inside the two rectangular conductive frames, and a fourth conductive hinge seat is fixed to the opposite side of the two second I-shaped conductive sliders. A first conductive hinge arm is hingedly fitted between the first conductive hinge seat and the fourth conductive hinge seat, and a second conductive hinge arm is interlockedly fitted between the second conductive hinge seat and the third conductive hinge seat.

[0028] The present invention is further configured as follows: a U-shaped conductive positioning vertical plate is fixed on the top of the two second I-shaped conductive sliding blocks, a second arc-shaped conductive plate is fixed on the outer top of the two U-shaped conductive positioning vertical plates, and a second conductive tooth is provided on the inner wall of the second arc-shaped conductive plate.

[0029] The advantages of the present invention are:

[0030] During the use of the present invention, water from the outside may sequentially pass through a plurality of water guide grooves formed in a circular array on the outer peripheral side of the waterproof cover, and at the same time, under the filtering effect of a plurality of filter screens respectively provided on the peripheral sides of the bell mouth, enter the interior of a cooling cavity provided inside the waterproof cover through a plurality of water inlets for water cooling during use. The water in the water cooling process may eventually flow out through a water outlet pipe. During the whole process, it can be prevented that the use of the entire structure is affected by excessively high temperature during use.

[0031] The present invention completes the preliminary waterproofing process and avoids internal short circuit by sequentially threading and rotating multiple outdoor lamp bodies to the electrical sockets located inside the waterproof covers at the tops of multiple mounting bases until the surfaces of the multiple outdoor lamp bodies are tightly fitted with the waterproof rings fixed on the tops of the multiple waterproof covers.

[0032] During the use of the present invention, the electrical series connection process between adjacent mounting base plates can be achieved simply by flipping the existing structure. The entire electrical series connection process does not require additional wiring operations, and the series connection process of the outdoor light waterproof lamp holder can be achieved, which simplifies the wiring process and brings certain convenience to users. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The present invention is a schematic structural diagram of a waterproof lamp holder for an outdoor light string.

[0034] Figure 2 It is a schematic structural diagram of the lamp holder assembly of the present invention.

[0035] Figure 3 It is a schematic diagram of the structure of the series device of the present invention.

[0036] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0037] Figure 5 For the present invention Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0038] Figure 6 For the present invention Figure 3 Schematic diagram of the enlarged structure at point C in the middle.

[0039] Figure 7 It is a schematic structural diagram of the lamp holder of the present invention.

[0040] Figure 8 It is a front view of the lamp holder of the present invention.

[0041] Fig. 9 It is a top view of the lamp holder of the present invention.

[0042] Fig.10 It is a schematic diagram of the cross-sectional structure of the lamp holder of the present invention.

[0043] Fig.11 It is a front view of the cross-sectional structure of the lamp holder of the present invention.

[0044] Fig.12 It is a structural schematic diagram of the outdoor lamp body of the present invention.

[0045] In the figure: 1, lamp holder assembly; 2, series device; 3, lamp holder member; 4, outdoor lamp body; 201, first semicircular shell; 202, second semicircular shell; 203, first fixing plate; 204, first fixing hole; 205, second fixing plate; 206, second fixing hole; 207, conical waterproof sleeve; 208, annular rubber sleeve; 209, semicircular waterproof pad; 210, waterproof strip; 211, semicircular groove; 212, rectangular groove; 213, first conductive sheet; 214, second conductive sheet; 215, conductive column; 216, first arc-shaped conductive sheet; 217, first conductive tooth; 218, conductive bottom plate; 219, guide groove; 220, U-shaped conductive vertical plate; 221, rectangular conductive frame; 222, The first conductive slider; 223, the first conductive hinge seat; 224, the second conductive hinge seat; 225, the elastic spring; 226, the first I-shaped conductive slider; 227, the third conductive hinge seat; 228, the fourth conductive hinge seat; 229, the second I-shaped conductive slider; 230, the first conductive hinge arm; 231, the second conductive hinge arm; 232, the U-shaped conductive positioning vertical plate; 233, the second arc-shaped conductive plate; 234, the second conductive tooth; 301, the installation base plate; 302, the waterproof cover; 303, the waterproof ring; 304, the electrical seat; 305, the cooling cavity; 306, the water outlet pipe; 307, the water guide groove; 308, the water inlet; 309, the bell mouth; 310, the filter; 311, the connecting wire. DETAILED DESCRIPTION

[0046] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0047] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0048] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0049] For example, see Figure 1-12 , the present invention provides the following technical solutions:

[0050] A waterproof lamp holder for an outdoor light string, specifically, comprising a plurality of lamp holder assemblies 1 connected in series and a plurality of series connection devices 2 connected in series between adjacent lamp holder assemblies 1, wherein the lamp holder assembly 1 comprises a lamp holder part 3 and an outdoor lamp body 4 threadedly connected inside the lamp holder part 3; the lamp holder part 3 comprises a mounting base plate 301, a waterproof cover 302 is fixed on the top of the mounting base plate 301, a waterproof ring 303 is fixed on the top of the waterproof cover 302, an electrical socket 304 is electrically connected to the top of the mounting base plate 301 located inside the waterproof cover 302, and an electrical socket 304 is electrically connected to the electrical socket 304. The base 304 is threadedly connected to the outdoor lamp body 4; a cooling cavity 305 is arranged inside the waterproof cover 302, and a plurality of water outlet pipes 306 connected to the cooling cavity 305 are arranged in a circular array on the outer peripheral side of the waterproof cover 302, and a plurality of water guide grooves 307 are opened in a circular array on the outer peripheral side of the waterproof cover 302, and a water inlet 308 connected to the cooling cavity 305 is arranged on the inner wall of each of the water guide grooves 307, and one end of the water inlet 308 is connected to a bell mouth 309, and a filter screen 310 is arranged on the side around the bell mouth 309.

[0051] The specific application of this embodiment 1 is:

[0052] After the electrical connection between multiple adjacent lamp holder assemblies 1 is completed, the multiple outdoor lamp bodies 4 are threadedly connected to the top of multiple mounting base plates 301 and the inside of the electrical sockets 304 electrically connected inside the waterproof cover 302, until the surfaces of the multiple outdoor lamp bodies 4 are tightly fitted with the waterproof rings 303 fixed on the top of the multiple waterproof covers 302, so as to complete the initial waterproof process and avoid internal short circuit. In the later use process, when the external water falls on the surface of the entire structure, the external water may pass through the several water guide grooves 307 opened in a circular array on the outer peripheral side of the waterproof cover 302 in turn, and at the same time, under the filtering effect of the filter screens 310 respectively arranged on the sides of the several bell mouths 309, the water enters the cooling cavity 305 arranged inside the waterproof cover 302 through the several water inlets 308 for water cooling during use. The water in the water cooling process can finally flow out through the outlet pipe 306. In the whole process, it can be avoided that the entire structure is affected by the high temperature during use, and has a certain waterproof effect.

[0053] For example 2, please refer to Figure 1-12, the second embodiment is improved on the basis of the first embodiment as follows. Specifically, the mounting base plate 301 is provided with connecting wires 311 electrically connected to the electrical seat 304 on both opposite sides; the two connecting wires 311 extend outward respectively; two adjacent connecting wires 311 are electrically connected through the series device 2; the series device 2 includes a first semicircular shell 201, and the top of the first semicircular shell 201 is hingedly matched with a second semicircular shell 202; a first fixing plate 203 is fixed to the outer peripheral side of the first semicircular shell 201, and a first fixing hole 204 is opened on the top of the first fixing plate 203; a second fixing plate 205 is fixed to the outer peripheral side of the second semicircular shell 202, and the top of the second fixing plate 205 is hingedly matched with a second semicircular shell 202; A second fixing hole 206 is provided through the inner wall of the first semicircular shell 201, and the second fixing hole 206 is fixedly connected to the first fixing hole 204 by bolts; conical waterproof sleeves 207 are fixed near both ends of the inner wall of the first semicircular shell 201, and an annular rubber sleeve 208 is fixed to the two conical waterproof sleeves 207 on the outside of the first semicircular shell 201 relative to one end surface; the two conical waterproof sleeves 207 are located inside the first semicircular shell 201 relative to the other end surface, and semicircular waterproof pads 209 are fixed to the inside; two symmetrical waterproof strips 210 are fixed on the surface of the first semicircular shell 201; semicircular grooves 211 adapted to the two semicircular waterproof pads 209 are provided near both ends of the second semicircular shell 202, and the surface of the second semicircular shell 202 is provided with There are two symmetrical rectangular grooves 212, and the two rectangular grooves 212 are respectively adapted to the two waterproof strips 210; a first conductive sheet 213 is fixed to the inner wall of the first semicircular shell 201; a second conductive sheet 214 is fixed to the inner wall of the second semicircular shell 202; two symmetrical conductive columns 215 are fixed to the inner wall of the first conductive sheet 213, and the tops of the two conductive columns 215 are fixed with first arc-shaped conductive plates 216, and the inner wall of the first arc-shaped conductive plate 216 is fixed with first conductive teeth 217; two symmetrical conductive bottom plates 218 are fixed to the inner wall of the second conductive sheet 214, and the tops of the two conductive bottom plates 218 are provided with guide grooves 219, and the insides of the two conductive bottom plates 218 are fixed with U-shaped conductive vertical plates 2 20, the inner wall of the second conductive sheet 214 is located between the two conductive bottom plates 218 and fixed with two symmetrical rectangular conductive frames 221; the two guide grooves 219 are both slidably matched with the first conductive sliders 222, the tops of the two first conductive sliders 222 are both fixed with the first conductive hinge seats 223, and the opposite side of the two first conductive sliders 222 are both fixed with the second conductive hinge seats 224; one side of the first conductive slider 222 and the inner wall of the guide groove 219 are fixed with elastic springs 225; the two U-shaped conductive vertical plates 220 are both slidably matched with the first I-shaped conductive sliders 226, and the opposite side of the two first I-shaped conductive sliders 226 are both fixed with the third conductive hinge seats 227;The two rectangular conductive frames 221 are both slidably matched with the second I-shaped conductive sliders 229, and the opposite side of the two second I-shaped conductive sliders 229 is fixed with the fourth conductive hinge seat 228, the first conductive hinge seat 223 and the fourth conductive hinge seat 228 are hingedly matched with the first conductive hinge arm 230, and the second conductive hinge seat 224 and the third conductive hinge seat 227 are intersected with the second conductive hinge arm 231; the tops of the two second I-shaped conductive sliders 229 are both fixed with U-shaped conductive positioning vertical plates 232, and the outer tops of the two U-shaped conductive positioning vertical plates 232 are both fixed with second arc-shaped conductive plates 233, and the inner walls of the second arc-shaped conductive plates 233 are both provided with second conductive teeth 234. ;

[0054] The specific application of this second embodiment is:

[0055] When the entire device is connected in series outdoors, first, the outer skin of the connecting wires 311 at one end of the two connecting wires 311 electrically connected to the two electrical sockets 304 on the opposite sides of the two adjacent mounting base plates 301 is peeled off to expose the conductive core parts inside the two connecting wires 311, and then one end of the conductive core parts exposed inside the two connecting wires 311 is inserted into the two conical waterproof sleeves 207 in sequence, so that the conductive core parts inside the two connecting wires 311 are respectively located above the first conductive sheet 213 fixed to the inner wall of the first semicircular shell 201. At this time, the annular rubber sleeves 208 respectively fixed on the outside of the first semicircular shell 201 at the opposite end faces of the two conical waterproof sleeves 207 will be fully and tightly in contact with the outer skin parts of the two connecting wires 311 passed through, so as to achieve a certain waterproof effect, prevent external water from flowing from the two conical waterproof sleeves 207 into the conductive core parts inside the two connecting wires 311, and avoid causing a short circuit;

[0056] After the threading process is completed, the second semicircular shell 202 hingedly matched with the top of the first semicircular shell 201 is rotated to make the second semicircular shell 202 flip at a certain angle. Before the second semicircular shell 202 flips at a certain angle, the conductive core parts inside the two connecting wires 311 located above the first conductive sheet 213 fixed to the inner wall of the first semicircular shell 201 will also be simultaneously located above the two conductive columns 215 respectively fixed to the inner wall of the first conductive sheet 213, the two first arc-shaped conductive plates 216 respectively fixed to the top of the two conductive columns 215, and the first conductive teeth 217 respectively fixed to the inner walls of the two first arc-shaped conductive plates 216. At this time, as the second semicircular shell 202 flips at a certain angle, the second conductive hinge arm 231 hingedly matched between the second conductive hinge seat 224 and the third conductive hinge seat 227 will gradually be aligned with the first conductive hinge seat 224. The conductive core parts inside the connecting wire 311 above the first conductive latch 217 are in contact with each other. During the flipping process, combined with the clamping support of the first conductive latch 217, the second conductive hinge arm 231 hingedly matched between the second conductive hinge seat 224 and the third conductive hinge seat 227 is hingedly rotated to a certain extent. When the second conductive hinge arm 231 is hingedly rotated between the second conductive hinge seat 224 and the third conductive hinge seat 227, the first conductive slider 222 slidingly matched inside the guide groove 219 starts to move. When the first conductive slider 222 inside the guide groove 219 starts to move, the elastic spring 225 connected and fixed between the first conductive slider 222 and the guide groove 219 is compressed, which plays a certain buffering role, preventing the first conductive slider 222 from moving too fast and affecting the subsequent connection process.

[0057] When the first conductive slider 222 in the guide groove 219 starts to move, the first conductive hinge arm 230 articulated between the first conductive hinge seat 223 and the fourth conductive hinge seat 228 also undergoes a certain upward pulling process. During the upward pulling process, it slowly provides a sliding force for the second I-shaped conductive slider 229 that slides in the rectangular conductive frame 221, so that the U-shaped conductive positioning vertical plate 232 fixed on the top of the second I-shaped conductive slider 229, the second arc-shaped conductive plate 233 fixed on the top of the U-shaped conductive positioning vertical plate 232, and the second conductive tooth 234 provided on the inner wall of the second arc-shaped conductive plate 233 gradually approach the conductive core part inside the connecting wire 311, thereby finally positioning the connecting wire 311. The internal conductive battery part is further snap-fitted and locked in position. After the snap-fitting and locking are completed, the first fixing hole 204 opened through the top of the first fixing plate 203 and the second fixing plate 205 fixed to the outer peripheral side of the second semicircular shell 202 are in a relatively fitted state. At this time, the second fixing hole 206 can be connected and fixed to the first fixing hole 204 by bolts to complete the series connection process between the two adjacent mounting base plates 301. During the whole process, the electrical series connection process between the adjacent mounting base plates 301 can be achieved by simply flipping the existing structure. The series connection process of the outdoor light waterproof lamp holder can be achieved without performing additional wiring operations, which simplifies the wiring process and brings certain conveniences to users.

[0058] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0059] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0060] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0062] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A waterproof lamp holder for an outdoor light string, comprising a plurality of lamp holder assemblies (1) connected in series with each other and a plurality of series connection devices (2) connected in series between adjacent lamp holder assemblies (1), Features: The lamp holder assembly (1) comprises a lamp holder component (3) and an outdoor lamp body (4) threadedly connected to the interior of the lamp holder component (3); The lamp holder (3) comprises a mounting base plate (301), a waterproof cover (302) is fixed on the top of the mounting base plate (301), a waterproof ring (303) is fixed on the top of the waterproof cover (302), an electrical seat (304) is electrically connected to the top of the mounting base plate (301) located inside the waterproof cover (302), and the electrical seat (304) is threadedly connected to the outdoor lamp body (4); A cooling cavity (305) is arranged inside the waterproof cover (302); a plurality of water outlet pipes (306) connected to the cooling cavity (305) are arranged in a circular array on the outer peripheral side of the waterproof cover (302); a plurality of water guide grooves (307) are opened in a circular array on the outer peripheral side of the waterproof cover (302); a water inlet (308) connected to the cooling cavity (305) is arranged on the inner wall of the plurality of water guide grooves (307); one end of the water inlet (308) is connected to a bell mouth (309); a filter screen (310) is arranged on the peripheral side of the bell mouth (309); Two opposite side surfaces of the installation base plate (301) are provided with connecting wires (311) electrically connected to the electrical seat (304); The two connecting wires (311) extend outwards respectively; Two adjacent connecting wires (311) are electrically connected via a series device (2); The series connection device (2) comprises a first semicircular shell (201), wherein the top of the first semicircular shell (201) is hingedly matched with a second semicircular shell (202); A first fixing plate (203) is fixed to the outer peripheral side surface of the first semicircular shell (201), and a first fixing hole (204) is formed through the top of the first fixing plate (203); A second fixing plate (205) is fixed to the outer peripheral side surface of the second semicircular shell (202), a second fixing hole (206) is formed through the top of the second fixing plate (205), and the second fixing hole (206) is fixedly connected to the first fixing hole (204) by bolts; Conical waterproof sleeves (207) are fixed to the inner wall of the first semicircular shell (201) near both ends, and annular rubber sleeves (208) are fixed to the opposite end surfaces of the two conical waterproof sleeves (207) located outside the first semicircular shell (201); The two conical waterproof sleeves (207) are both fixed with semicircular waterproof pads (209) on the other end surfaces thereof located inside the first semicircular shell (201); Two symmetrical waterproof strips (210) are fixed on the surface of the first semicircular shell (201); The second semicircular shell (202) is provided with semicircular grooves (211) adapted to the two semicircular waterproof pads (209) near both ends thereof, and the surface of the second semicircular shell (202) is provided with two symmetrical rectangular grooves (212), the two rectangular grooves (212) being adapted to the two waterproof strips (210) respectively; A first conductive sheet (213) is fixed to the inner wall of the first semicircular shell (201); A second conductive sheet (214) is fixed to the inner wall of the second semicircular shell (202); Two symmetrical conductive pillars (215) are fixed on the inner wall of the first conductive sheet (213), a first arc-shaped conductive plate (216) is fixed on the top of each of the two conductive pillars (215), and a first conductive tooth (217) is fixed on the inner wall of the first arc-shaped conductive plate (216); Two symmetrical conductive bottom plates (218) are fixed on the inner wall of the second conductive sheet (214); guide grooves (219) are provided on the tops of the two conductive bottom plates (218); U-shaped conductive vertical plates (220) are fixed inside the two conductive bottom plates (218); and two symmetrical rectangular conductive frames (221) are fixed on the inner wall of the second conductive sheet (214) between the two conductive bottom plates (218); The two guide grooves (219) are both slidably fitted with a first conductive slider (222), the tops of the two first conductive sliders (222) are both fixed with a first conductive hinge seat (223), and the opposite side surfaces of the two first conductive sliders (222) are both fixed with a second conductive hinge seat (224); An elastic spring (225) is fixed to one side of the first conductive sliding block (222) and the inner wall of the guide groove (219); The two U-shaped conductive vertical plates (220) are both slidably matched with a first I-shaped conductive sliding block (226), and a third conductive hinge seat (227) is fixed to the side surfaces of the two first I-shaped conductive sliding blocks (226) on opposite sides; A second I-shaped conductive slide block (229) is slidably fitted inside the two rectangular conductive frames (221); a fourth conductive hinge seat (228) is fixed to the opposite side of the two second I-shaped conductive slide blocks (229); a first conductive hinge arm (230) is hingedly fitted between the first conductive hinge seat (223) and the fourth conductive hinge seat (228); and a second conductive hinge arm (231) is interlockedly fitted between the second conductive hinge seat (224) and the third conductive hinge seat (227); A U-shaped conductive positioning vertical plate (232) is fixed on the top of the two second I-shaped conductive sliding blocks (229), a second arc-shaped conductive plate (233) is fixed on the outer top of the two U-shaped conductive positioning vertical plates (232), and a second conductive tooth (234) is provided on the inner wall of the second arc-shaped conductive plate (233).

Images