LED light string

Abstract

The present invention discloses an LED light string, comprising a waterproof strip and a light source module installed in the waterproof strip, wherein the upper and lower parts of the waterproof strip are respectively provided with an upper groove and a lower groove, the light source module is installed in the lower groove, an upper end cover is installed at the upper end of the waterproof strip, and a limiting block is installed in the lower groove of the waterproof strip; both ends of the waterproof strip are provided with side end covers, the inner side walls of the side end covers are provided with a sleeve portion and an embedded portion, the sleeve portion is sleeved with a mounting seat, a control component for controlling the air circulation between the inner cavity of the upper groove and the outside of the LED light string is installed in the mounting seat, and the embedded portion is embedded in the lower groove. The waterproof strip is sealed and covered around by the upper end cover, the limiting block, the side end cover and the mounting seat, so that the LED light string has a good waterproof effect as a whole; and while ensuring the waterproof effect, by opening two control components in sequence, the upper groove in the waterproof strip is connected to the outside air twice, so as to form air flow for heat dissipation.

Description

Technical Field

[0001] The present invention relates to the technical field of LED light strings, and more specifically, to an LED light string. Background Art

[0002] With the improvement of people's living standards and the advancement of technology, LED light strings have become a frequently used lighting and decoration product. LED light strings generate a lot of heat when working, and efficient heat dissipation is the guarantee of the service life of LED light strings. At the same time, since LED light strings are often used in outdoor hanging, there are certain requirements for the sealing between the components, and they must also be waterproof.

[0003] Therefore, it is necessary to propose a new solution to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide an LED light string.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] An LED light string comprises a waterproof strip, and a light source module installed in the waterproof strip, wherein the upper and lower parts of the waterproof strip are respectively provided with an upper groove and a lower groove, and the waterproof strip is formed into an H-shaped structure, the light source module is installed in the lower groove, the waterproof strip is provided with a through hole corresponding to the position of the LED lamp bead in the light source module, the LED lamp bead of the light source module is located in the through hole, an upper end cover for sealing the upper groove is installed at the upper end of the waterproof strip, and a limit block for limiting the position of the light source module is installed in the lower groove of the waterproof strip; side end covers are installed at both ends of the waterproof strip, and the inner side wall of the side end cover is provided with a sleeve portion corresponding to the upper groove of the waterproof strip, and a sleeve portion corresponding to the lower groove of the waterproof strip. Corresponding to the embedded part, the sleeve part is axially provided with a first air vent connected to the upper groove, one end of the first air vent passes through the side end cover, the sleeve part is sleeved with a mounting seat, the outer surface of the mounting seat abuts the inner wall of the upper end cover and the wall of the upper groove, the mounting seat is axially provided with a second air vent connected to the groove on the waterproof strip, a control component for controlling the air circulation between the inner cavity of the upper groove and the outside of the LED light string is installed in the mounting seat, and the working states of the two control components are opposite, the embedded part is embedded in the lower groove, the outer surfaces of the embedded part respectively abut the light source module, the limit block and the wall of the lower groove, and the inner wall of the side end cover abuts the upper end cover, the waterproof strip and the limit block.

[0007] Furthermore, the control member includes a mounting portion, a connecting portion, an abutting portion and a guiding portion, the abutting portion is located in the inner cavity of the mounting portion and is coaxially arranged with the mounting portion, one side of the abutting portion is a spherical surface, and the guiding portion is a truncated cone structure, the wide-mouth end of the guiding portion is mounted on the spherical surface of the abutting portion, and the narrow-mouth end of the guiding portion is arranged away from the spherical surface of the abutting portion, the guiding portion and the abutting portion are coaxially arranged, the outer side wall of the abutting portion is connected to one end of the connecting portion, and the other end of the connecting portion is connected to the inner wall of the mounting portion, and the connecting portion is arranged in an arc shape; the spherical surface of the abutting portion in one of the control members is arranged toward the sleeve connecting portion and covers the first air hole, the guiding portion in one of the control members penetrates the first air hole, and the narrow-mouth end of the guiding portion is located outside the side end cover; the spherical surface of the abutting portion in the other control member is facing away from the sleeve connecting portion and covers the second air hole, the guiding portion in the other control member penetrates the second air hole, and the narrow-mouth end of the guiding portion is located in the upper groove.

[0008] Furthermore, the mounting seat is a square body structure adapted to the upper groove, the mounting seat is axially provided with a mounting cavity, the cross-section of the mounting cavity is circular, the sleeve portion of the side end cover is a columnar structure adapted to the mounting cavity, and the mounting portion of the control component is an annular structure adapted to the mounting cavity.

[0009] Furthermore, the waterproof strip is provided with a mounting groove at a position corresponding to the light source module, and the light source module is mounted in the mounting groove.

[0010] Furthermore, one of the side end covers is provided with an interface for threading the wire, one end of the interface passes through the embedded portion, an extrusion block is provided in the inner cavity of the other end of the interface, and the extrusion block is provided with a wire passing channel for the wire to pass through, the caliber of the wire passing channel gradually decreases from the inside to the outside, and the caliber of the outer end of the wire passing channel is slightly smaller than the diameter of the wire.

[0011] Furthermore, a light-transmitting plate is bonded to the upper end cover at a position corresponding to the upper groove by glue, and two sides of the upper end cover are fitted with the top of the waterproof strip.

[0012] Furthermore, both sides of the upper end cover are bent 90° toward the waterproof strip to form flanges, and limit seats are provided on both sides of the waterproof strip corresponding to the flanges. The limit seats are provided with limit grooves matched with the flanges, and the upper end cover is installed on the waterproof strip by snap-fitting the flanges and the limit grooves.

[0013] Furthermore, a sliding block is provided on the outer side wall of the flange, a sliding groove matched with the sliding block is provided on the groove wall of the limiting groove, and the sliding block is slidably connected to the sliding groove.

[0014] Furthermore, threaded holes are provided on both side walls of the limit block, and insertion holes are provided on the waterproof strip corresponding to the threaded holes. Bolts threadedly connected to the inner cavity of the threaded holes are inserted into the insertion holes, and waterproof gaskets are sleeved on the bolts where they fit the waterproof strips.

[0015] The beneficial effects of the present invention are:

[0016] 1. In the present invention, the upper end cover, the limit block, the side end cover and the mounting seat cooperate to seal the surrounding of the waterproof strip, so that the LED light string as a whole has a good waterproof effect; and while ensuring the waterproof effect, by opening the two control parts in sequence, the upper groove in the waterproof strip is connected to the outside air twice to form air flow for heat dissipation.

[0017] 2. In the present invention, the thermal pressure formed by the heat generated when the light source module is working is used to drive one of the control components to open, so that the hot air in the upper groove flows to the outside. Since the hot air in the upper groove is discharged, a negative pressure is formed in the upper groove. Under the action of the negative pressure, one of the control components is closed and the other control component is opened, so that the inner cavity of the upper groove is connected to the outside again, and the outside air flows into the upper groove to cool down the light source module, thereby effectively reducing the overall temperature of the LED light string. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the LED light string in this embodiment;

[0019] Figure 2 This is a right-side structural schematic diagram of the LED light string in this embodiment;

[0020] Figure 3 This is a schematic diagram of a cross-sectional structure of an LED light string in this embodiment;

[0021] Figure 4 A schematic diagram of the structure of the waterproof strip in this embodiment;

[0022] Figure 5 This is a schematic diagram of a connection structure between the waterproof strip and the upper end cover in this embodiment;

[0023] Figure 6 This is a schematic diagram of a top view of the structure of the control component in this embodiment;

[0024] Figure 7 A schematic diagram of the structure of the limit block in this embodiment;

[0025] Figure 8 A schematic diagram of the structure of the side end cover in this embodiment;

[0026] Fig. 9 Schematic diagram of the structure of the mounting base in this embodiment.

[0027] Figure numerals: waterproof strip 1, upper groove 101, lower groove 102, through hole 103, mounting groove 104, limiting seat 105, limiting groove 106, sliding groove 107, light source module 2, upper end cover 3, light-transmitting plate 301, flange 302, slider 303, limiting block 4, threaded hole 401, side end cover 5, sleeve portion 501, embedded portion 502, first ventilation hole 503, mounting seat 6, second ventilation hole 601, mounting cavity 602, control part 7, mounting portion 701, connecting portion 702, abutting portion 703, guide portion 704, interface 8, extrusion block 801, wire passage 802, bolt 9, waterproof gasket 10. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment: An LED light string, such as Figure 1-Figure 9 As shown, it includes a waterproof strip 1 and a light source module 2 installed in the waterproof strip 1. The waterproof strip 1 is a strip structure. The upper and lower parts of the waterproof strip 1 are respectively provided with an upper groove 101 and a lower groove 102, and the waterproof strip 1 is formed into an H-shaped structure. The light source module 2 is installed in the lower groove 102. The light source module 2 includes a flexible board and LED lamp beads installed on the flexible board. The waterproof strip 1 has a through hole 103 corresponding to the position of the LED lamp beads in the light source module 2, so that the LED lamp beads of the light source module 2 are located in the through hole 103. The upper end of the waterproof strip 1 is installed with an upper end cover 3 for sealing the upper groove 101, and the lower groove 102 of the waterproof strip 1 is installed with a limit block 4 for limiting the light source module 2. By setting the limit block 4, on the one hand, the light source module 2 can be limited and fixed, and on the other hand, the lower groove 102 can be sealed; by cooperating with the upper end cover 3 and the limit block 4, the upper groove 101 and the lower groove 102 are sealed respectively, so that the upper and lower parts of the waterproof strip 1 have a certain waterproof effect.

[0030] Further, such as Figure 3 and Figure 8As shown, the two ends of the waterproof strip 1 are equipped with side end covers 5 for sealing the two ends of the waterproof strip 1, and the inner side wall of the side end cover 5 is provided with a sleeve portion 501 and an embedded portion 502 integrally formed with the side end cover 5, wherein the sleeve portion 501 corresponds to the upper groove 101 of the waterproof strip 1, and the embedded portion 502 corresponds to the lower groove 102 of the waterproof strip 1. When the side end cover 5 is installed at the two ends of the waterproof strip 1, the inner side wall of the side end cover 5 abuts the upper end cover 3, the waterproof strip 1 and the limit block 4, and at the same time, the embedded portion 502 is embedded in the lower groove 102, and the outer surface of the embedded portion 502 abuts the light source module 2, the limit block 4 and the groove wall of the lower groove 102 respectively, and the sleeve portion 501 is located in the upper groove 101, and the sleeve portion 501 is sleeved with a mounting seat 6, and the outer surface of the mounting seat 6 abuts the inner wall of the upper end cover 3 and the groove wall of the upper groove 101. By setting the side end cover 5, the sleeve portion 501, the mounting seat 6 and the embedded portion 502 cooperate to seal the ends of the upper groove 101 and the lower groove 102 respectively, so that the two ends of the waterproof strip 1 have a certain waterproof effect.

[0031] Preferably, the waterproof strip 1, the upper end cover 3, the limit block 4, the side end cover 5 and the mounting seat 6 are made of silicone rubber, which has a certain flexibility and deformation ability. The connection between the various components can adopt an interference fit, which has a sealing effect and is easy to disassemble and assemble.

[0032] Furthermore, the sleeve portion 501 is axially provided with a first air vent 503 connected to the upper groove 101, one end of the first air vent 503 passes through the side end cover 5, and the mounting seat 6 is axially provided with a second air vent 601 connected to the upper groove 101. A control component 7 for controlling the air circulation between the inner cavity of the upper groove 101 and the outside of the LED light string is installed in the mounting seat 6, and the working states of the two control components 7 are opposite.

[0033] When the LED light string is working, the light source module 2 will generate a large amount of heat. Due to its waterproof property, the LED light string seals and connects the components, so that the heat accumulates in the upper groove 101 of the waterproof strip 1. By controlling the control part 7 to open, the inner cavity of the upper groove 101 is connected to the outside, so that the hot air in the upper groove 101 flows to the outside, and the air from the outside flows into the upper groove 101.

[0034] With: such as Figure 3As shown, due to the accumulation of heat generated by the light source module 2 in the upper groove 101 of the waterproof strip 1, the air pressure in the upper groove 101 increases, and one of the control components 7 (i.e. the right side) is opened by high pressure, so that the inner cavity of the upper groove 101 is connected to the outside world, and the hot air in the upper groove 101 flows to the outside world. Since the hot air in the upper groove 101 is discharged, a negative pressure is formed in the upper groove 101, and under the action of the negative pressure, one of the control components 7 (i.e. the right side) is closed, and the other control component 7 (i.e. the left side) is opened, so that the inner cavity of the upper groove 101 is connected to the outside world again, and the outside air flows into the upper groove 101 to cool down the light source module 2; this cycle repeats, through the cooperation of the two control components 7, that is, one of the control components 7 is opened to discharge the hot air, and the other control component 7 is opened to supplement the air, forming air flow, cooling the light source module 2, and effectively reducing the overall temperature of the LED light string. It should be noted that the opening and closing states of the two control components 7 are opposite to each other. At the same time, since the control member 7 is located in the upper groove 101 of the waterproof strip 1, when the control member 7 is opened and closed to dissipate heat and cool down, the LED light string still has a certain waterproof effect.

[0035] Further, such as Figure 3 and Figure 6 As shown, the control member 7 includes a mounting portion 701, a connecting portion 702, an abutting portion 703 and a guiding portion 704. The abutting portion 703 is located in the inner cavity of the mounting portion 701 and is coaxially arranged with the mounting portion 701. One side of the abutting portion 703 is a spherical surface. The guiding portion 704 is a truncated cone structure with a wide end and a narrow end. The wide end of the guiding portion 704 is mounted on the spherical surface of the abutting portion 703, and the narrow end of the guiding portion 704 is arranged away from the spherical surface of the abutting portion 703. The guiding portion 704 is coaxially arranged with the abutting portion 703. The outer wall of the abutting portion 703 is connected to one end of the connecting portion 702, and the other end of the connecting portion 702 is connected to the inner wall of the mounting portion 701.

[0036] The spherical surface of the abutment portion 703 in one of the control members 7 is arranged toward the sleeve portion 501 and covers the first vent hole 503. At the same time, the guide portion 704 in the control member 7 is arranged to pass through the first vent hole 503, and the narrow end of the guide portion 704 is located outside the side end cover 5; the spherical surface of the abutment portion 703 in the other control member 7 is facing away from the sleeve portion 501 and covers the second vent hole 601. At the same time, the guide portion 704 in the control member 7 is arranged to pass through the second vent hole 601, and the narrow end of the guide portion 704 is located in the upper groove 101.

[0037] Among them, the control part 7 is made of plastic material as a whole, and has the characteristics of light weight and softness. The abutment part 703 is a circular thin sheet structure, and its spherical surface is coaxially arranged with the first air hole 503 and the second air hole 601, so as to ensure that the abutment part 703 can cover the first air hole 503 and the second air hole 601, so as to achieve that when the hot high pressure and negative pressure in the upper groove 101 act on the abutment part 703, the abutment part 703 can be separated from the first air hole 503 and the second air hole 601, thereby facilitating the discharge of hot air and the replenishment of external air. At the same time, by setting the guide part 704 with a truncated cone structure, on the one hand, by utilizing its inclined surface and the exposed narrow end, the air around the guide part 704 is flowed along the inclined surface of the guide part 704 to the first air hole 503 and the second air hole 601, so as to realize the exhaust of air and the replenishment of external air. On the other hand, by utilizing the truncated cone shape of the guide part 704, the airflow flowing into the first air hole 503 and the second air hole 601 is formed into a spiral airflow to increase the force acting on the abutting part 703. At the same time, the apertures of the first air hole 503 and the second air hole 601 are suddenly changed to increase the flow rate of the airflow, so as to effectively separate the abutting part 703 from the first air hole 503 and the second air hole 601, so as to facilitate the exhaust of hot air and the replenishment of external air.

[0038] As a preference, Figure 8 and Fig. 9 As shown, the mounting seat 6 is a square body structure adapted to the upper groove 101, that is, the cross-section of the mounting seat 6 is square, and the mounting seat 6 is axially provided with a mounting cavity 602, the cross-section of the mounting cavity 602 is circular, and is connected to the second vent hole 601, and the sleeve portion 501 of the side end cover 5 is a columnar structure adapted to the mounting cavity 602.

[0039] like Figure 6 As shown, the mounting portion 701 in the control member 7 is an annular structure matched with the mounting cavity 602, and the connecting portion 702 is arc-shaped and is provided with three portions, circumferentially surrounding the outer side of the abutting portion 703, that is, the angle between two adjacent connecting portions 702 is 120°; by providing the connecting portion 702, on the one hand, within the limited mounting space of the connecting portion 702, the length of the connecting portion 702 is increased as much as possible, so that the moving stroke of the abutting portion 703 is increased, the amount of hot air discharged and the amount of external air supplemented are increased, thereby improving the heat dissipation and cooling effect; on the other hand, the stability of the movement of the abutting portion 703 is improved, so that the abutting portion 703 is subjected to uniform force, and the first vent 503 and the second vent 601 are opened uniformly and effectively.

[0040] like Figure 3As shown, a mounting groove 104 is provided at the position of the waterproof strip 1 corresponding to the light source module 2, and the light source module 2 is installed in the mounting groove 104, that is, when the flexible board of the light source module 2 is installed in the mounting groove 104, its LED lamp bead is located in the through hole 103 of the waterproof strip 1; by setting the mounting groove 104, the light source module 2 is limited, and at the same time, in cooperation with the limiting block 4, the light source module 2 is limited and fixed in the mounting groove 104 to prevent the light source module 2 from shifting and affecting the use of the LED light string.

[0041] Further, such as Figure 2 and Figure 3 As shown, one of the side end covers 5 is provided with an interface 8 for threading a wire, the interface 8 is a hollow structure, one end of the interface 8 is arranged through the embedded portion 502, and the interface 8 is connected to the side end cover 5 as a whole. By providing the interface 8, the light source module 2 and the light source driver are electrically connected by a wire, and the LED lamp bead of the light source module 2 is lit.

[0042] Preferably, an extrusion block 801 is provided in the inner cavity at the other end of the interface 8, and a wire passage 802 is provided on the extrusion block 801 for the wire to pass through, and the diameter of the wire passage 802 gradually decreases from the inside to the outside, and the diameter of the outer end of the wire passage 802 is smaller than the diameter of the wire. The extrusion block 801 is connected to the interface 8 as a whole, and both are made of silicone rubber, which has a certain elasticity and deformation ability, which can not only ensure that the wire moves smoothly in the wire passage 802, but also ensure that the wire can be effectively clamped and fixed, and the wire and the wire passage 802 are sealed.

[0043] like Figure 1 As shown, a light-transmitting plate 301 is glued to the upper end cover 3 at the position corresponding to the upper groove 101, and the two sides of the upper end cover 3 are in contact with the top of the waterproof strip 1. The light-transmitting plate 301 is transparent to facilitate the light emitted by the light source module 2 to pass through; and the upper end cover 3 is frosted to cover the top of the waterproof strip 1, thereby improving the overall aesthetics of the LED light string.

[0044] Further, such as Figure 4 and Figure 5 As shown, both sides of the upper end cover 3 are bent 90° toward the waterproof strip 1 to form flanges 302, and limiting seats 105 are provided at both sides of the waterproof strip 1 corresponding to the flanges 302, and limiting slots 106 matching the flanges 302 are provided on the limiting seats 105, and the upper end cover 3 is installed on the waterproof strip 1 through the snap-fitting of the flanges 302 and the limiting slots 106. By providing the flanges 302 and the limiting slots 106, not only the fixing effect between the upper end cover 3 and the waterproof strip 1 can be improved, but also the sealing between the upper end cover 3 and the waterproof strip 1 can be improved, thereby improving the waterproof effect.

[0045] Preferably, a slider 303 is provided on the outer wall of the flange 302, and a slide groove 107 adapted to the slider 303 is provided on the groove wall of the limiting groove 106, and the slider 303 is slidably connected to the slide groove 107. By providing the slider 303 and the slide groove 107, on the one hand, a guiding function is played to facilitate the sliding installation of the upper end cover 3 on the waterproof strip 1, and on the other hand, the sealing between the upper end cover 3 and the waterproof strip 1 can be further improved, thereby improving the waterproof effect.

[0046] like Figure 1 , Figure 2 and Figure 7 As shown, threaded holes 401 are provided on the two side walls of the limit block 4, and a plug hole is provided at the position corresponding to the threaded hole 401 of the waterproof strip 1, and a bolt 9 threadedly connected to the inner cavity of the threaded hole 401 is inserted into the plug hole, and a waterproof gasket 10 is sleeved at the part where the bolt 9 fits the waterproof strip 1. By providing the threaded hole 401 and the plug hole, it is convenient for the bolt 9 to fix the limit block 4 and the waterproof strip 1, and the light source module 2 is limited and fixed by fixing the limit block 4. By providing the waterproof gasket 10, the waterproof effect at the installation position of the bolt 9 is improved.

[0047] Preferably, the upper end cover 3, the waterproof strip 1, the side end cover 5 and the limit block 4 are silicone rubber with added heat-conducting materials, such as silicone rubber with added aluminum oxide, silicone rubber with added boron nitride, etc., which have a certain thermal conductivity effect and can radiate the heat generated by the light source module 2 outward through thermal conduction, thereby improving the heat dissipation effect of the LED light string and further reducing the overall temperature of the LED light string. Preferably, the limit block 4 is a convex structure, the bottom of which passes through the lower groove 102 of the waterproof strip 1, and extends to the outside of the waterproof strip 1 and abuts against the waterproof strip 1. The limit block 4 adopts the above design to improve the sealing between the limit block 4 and the waterproof strip 1, thereby improving the waterproof effect. At the same time, it can also improve the thermal conductivity and heat dissipation effect of the limit block 4 and reduce the temperature of the LED light string.

[0048] During installation, first install the light source module 2 into the lower groove 102 of the waterproof strip 1, so that the LED lamp beads in the light source module 2 are located in the through holes 103 opened on the waterproof strip 1; then, install the limit block 4 into the lower groove 102 of the waterproof strip 1, and make the two ends of the limit block 4 flush with the two ends of the waterproof strip 1 to ensure that the limit block 4 is installed in place, and at the same time, use the limit block 4 to abut the light source module 2 to limit the light source module 2; then, install the upper end cover 3 to the top of the waterproof strip 1, and make the two ends of the upper end cover 3 flush with the two ends of the waterproof strip 1 to ensure that the upper end cover 3 is installed in place. Install in place; then, the mounting seat 6 installed with the control component 7 is sleeved on the sleeve part 501 of the side end cover 5, so that the mounting seat 6 and the sleeve part 501 are fixedly connected, and the control component 7 is ensured to be installed in place through the limiting cooperation of the bottom wall of the inner cavity of the mounting seat 6 and the sleeve part 501, thereby ensuring that the control component 7 can cover the first vent hole 503 and the second vent hole 601; finally, the side end cover 5 is respectively installed to the two ends of the waterproof strip 1, so that the sleeve part 501 installed with the mounting seat 6 is installed in the upper groove 101 of the waterproof strip 1, and the embedded part 502 is installed in the lower groove 102 of the waterproof strip 1.

[0049] 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. An LED light string, comprising a waterproof strip (1), and a light source module (2) installed in the waterproof strip (1), characterized in that: The upper and lower parts of the waterproof strip (1) are respectively provided with an upper groove (101) and a lower groove (102), and the waterproof strip (1) is formed into an H-shaped structure. The light source module (2) is installed in the lower groove (102). The waterproof strip (1) is provided with a through hole (103) corresponding to the position of the LED lamp bead in the light source module (2). The LED lamp bead of the light source module (2) is located in the through hole (103). The upper end of the waterproof strip (1) is provided with a cover for covering the upper groove. The waterproof strip (1) has an upper end cover (3) and a limit block (4) for limiting the position of the light source module (2) is installed in the lower groove (102) of the waterproof strip (1); both ends of the waterproof strip (1) are installed with side end covers (5), and the inner side wall of the side end cover (5) is provided with a sleeve portion (501) corresponding to the upper groove (101) of the waterproof strip (1), and an embedded portion (502) corresponding to the lower groove (102) of the waterproof strip (1), and the sleeve portion (501) is axially connected to the waterproof strip (1). A first vent hole (503) connected to the upper groove (101) is provided in the direction of the waterproof strip (1); one end of the first vent hole (503) penetrates the side end cover (5); the sleeve portion (501) is sleeved with a mounting seat (6); the outer surface of the mounting seat (6) abuts against the inner wall of the upper end cover (3) and the groove wall of the upper groove (101); the mounting seat (6) is axially provided with a second vent hole (601) connected to the upper groove (101) of the waterproof strip (1); the mounting seat (6) ) is installed with a control member (7) for controlling the air circulation between the inner cavity of the upper groove (101) and the outside of the LED light string, the working states of the two control members (7) are opposite, the embedded portion (502) is embedded in the lower groove (102), the outer surface of the embedded portion (502) respectively abuts against the light source module (2), the limit block (4) and the groove wall of the lower groove (102), and the inner side wall of the side end cover (5) abuts against the upper end cover (3), the waterproof strip (1) and the limit block (4); The control member (7) comprises a mounting portion (701), a connecting portion (702), an abutting portion (703) and a guiding portion (704); the abutting portion (703) is located in the inner cavity of the mounting portion (701) and is coaxially arranged with the mounting portion (701); one side of the abutting portion (703) is a spherical surface; the guiding portion (704) is a truncated cone structure; the wide end of the guiding portion (704) is mounted on the spherical surface of the abutting portion (703); the narrow end of the guiding portion (704) is arranged away from the spherical surface of the abutting portion (703); the guiding portion (704) is coaxially arranged with the abutting portion (703); the outer side wall of the abutting portion (703) is connected to one end of the connecting portion (702); the other end of the connecting portion (702) is connected to the mounting portion (701); The inner wall of the mounting portion (701), the connecting portion (702) is arranged in an arc shape; the spherical surface of the abutting portion (703) in one of the control members (7) is arranged toward the sleeve portion (501) and covers the first vent hole (503); the guiding portion (704) in one of the control members (7) is arranged through the first vent hole (503), and the narrow end of the guiding portion (704) is located outside the side end cover (5); the spherical surface of the abutting portion (703) in the other control member (7) is facing away from the sleeve portion (501) and covers the second vent hole (601); the guiding portion (704) in the other control member (7) is arranged through the second vent hole (601), and the narrow end of the guiding portion (704) is located in the upper groove (101).

2. The LED light string according to claim 1, characterized in that: The mounting seat (6) is a square body structure matched with the upper groove (101); the mounting seat (6) is axially provided with a mounting cavity (602); the cross section of the mounting cavity (602) is circular; the sleeve portion (501) of the side end cover (5) is a columnar structure matched with the mounting cavity (602); and the mounting portion (701) of the control member (7) is an annular structure matched with the mounting cavity (602).

3. The LED light string according to claim 1, characterized in that: The waterproof strip (1) is provided with a mounting groove (104) at a position corresponding to the light source module (2), and the light source module (2) is mounted in the mounting groove (104).

4. The LED light string according to claim 1, characterized in that: One of the side end covers (5) is provided with an interface (8) for threading a wire, one end of the interface (8) is arranged to pass through the embedded portion (502), an extrusion block (801) is arranged in the inner cavity of the other end of the interface (8), and the extrusion block (801) is provided with a wire passage (802) for the wire to pass through, the diameter of the wire passage (802) gradually decreases from the inside to the outside, and the diameter of the outer end of the wire passage (802) is slightly smaller than the diameter of the wire.

5. The LED light string according to claim 1, characterized in that: A light-transmitting plate (301) is bonded to the upper end cover (3) at a position corresponding to the upper groove (101) by glue, and two sides of the upper end cover (3) are in contact with the top of the waterproof strip (1).

6. The LED light string according to claim 1, characterized in that: Both sides of the upper end cover (3) are bent 90 degrees toward the waterproof strip (1) to form flanges (302); both sides of the waterproof strip (1) are provided with limit seats (105) corresponding to the flanges (302); the limit seats (105) are provided with limit grooves (106) matched with the flanges (302); the upper end cover (3) is installed on the waterproof strip (1) by snap-fitting the flanges (302) and the limit grooves (106).

7. The LED light string according to claim 6, characterized in that: A sliding block (303) is provided on the outer side wall of the flange (302), a sliding groove (107) adapted to the sliding block (303) is provided on the groove wall of the limiting groove (106), and the sliding block (303) is slidably connected to the sliding groove (107).

8. The LED light string according to claim 1, characterized in that: The two side walls of the limit block (4) are provided with threaded holes (401); the waterproof strip (1) is provided with insertion holes at positions corresponding to the threaded holes (401); bolts (9) threadedly connected to the inner cavity of the threaded holes (401) are inserted into the insertion holes; and waterproof gaskets (10) are sleeved on the bolts (9) at the locations where they fit the waterproof strip (1).

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