Connectors and stacking connector assemblies for connecting light strips

Abstract

The present invention relates to a connector and a stacking connector assembly for connecting light strips. The connector comprises a columnar main body (20) and an upper PCBA board (21) and a lower PCBA board (22) arranged inside the main body (20). A plurality of light strip connection windows (201) with different orientations are provided on the side of the main body (20) for receiving the end connectors (11) of the light strip (1). An upper expansion interface (213) is provided on the upper surface of the upper PCBA board (21) for establishing an electrical connection with a lower expansion connector (311) of the stacking connector (3). A lower expansion interface (221) is provided on the lower surface of the lower PCBA board (22) for establishing an electrical connection with the upper expansion connector (301) of the stacking connector (3). The connector of the present invention can detachably connect multiple light strips at the same time, thereby conveniently connecting multiple light strips together to form patterns of different shapes.

Description

Technical Field

[0001] The present invention relates to the field of lamps, and in particular to a connector and a stacked connector assembly for connecting light strips. Background Art

[0002] A light strip, named for its shape, is a strip-shaped light-emitting device. In recent years, with the advancement of LED technology, light strips have been widely used in space lighting and decorative applications. Light strips typically consist of multiple LEDs arranged along their length. The light from these LEDs shines onto a diffuser, which evenly distributes the light and increases the light strip's illumination range.

[0003] Since the size of light strip products is fixed, when a larger space needs to be illuminated or decorated, multiple light strips need to be used at the same time. In the prior art, light strips are generally combined together by splicing them end to end so that the light strips can be expanded in the length direction. There is also a technical solution in the prior art that uses connectors to connect multiple light strips. Connectors have two forms. The first form of connector is a straight-line connector, which can be connected between two light strips so that the two light strips are in the same straight line. The second form of connector is an L-shaped connector, which can be connected between two light strips so that the two light strips form an L-shape. By using straight-line connectors and right-angle connectors to connect, multiple light strips can be arranged into a straight line or L-shape.

[0004] Existing light strip connections are primarily used for lighting walls (e.g., baseboards) or furniture (e.g., cabinets). They lack diverse connection options, forcing the light strips to be assembled into a single configuration. Furthermore, existing light strip connectors only provide power to the light strips to illuminate them, but cannot independently control each light strip.

[0005] Therefore, it is necessary to provide a light bar connector that can realize multiple connection modes and can independently control the light bar. Summary of the Invention

[0006] In view of this, the present invention provides a connector for connecting light strips to solve the above technical problems.

[0007] The technical solutions of the present invention are as follows:

[0008] A connector for connecting a light bar includes a columnar body and an upper PCBA board and a lower PCBA board arranged inside the body. The side of the body is provided with multiple light bar connection windows with different orientations for receiving the end connectors of the light bar. The upper surface of the upper PCBA board is provided with an upper expansion interface for establishing an electrical connection with the lower expansion connector of the stacked connector. The lower surface of the lower PCBA board is provided with a lower expansion interface for establishing an electrical connection with the upper expansion connector of the stacked connector.

[0009] According to a preferred embodiment of the present invention, an upper through hole is provided on the upper PCBA board, and an upper buckle is provided below the upper through hole in the main body for engaging with the lower extended buckle of the stacking connector. A lower through hole is provided on the lower PCBA board, and a lower buckle is provided above the lower through hole in the main body for engaging with the upper extended buckle of the stacking connector.

[0010] According to a preferred embodiment of the present invention, the lower buckle member includes a plurality of latches distributed in an annular shape and spaced apart from each other.

[0011] According to a preferred embodiment of the present invention, the upper expansion interface and the lower expansion interface respectively include three pads for power connection, ground connection and control signal connection.

[0012] According to a preferred embodiment of the present invention, a light bar electrical connection interface is provided on the upper surface of the upper PCBA board. When the end connector of the light bar is inserted into the light bar connection window, the main body can establish a mechanical connection with the end connector of the light bar, and the light bar electrical connection interface can establish an electrical connection with the end connector of the light bar.

[0013] According to a preferred embodiment of the present invention, the main body is in the shape of a regular prism, and the light bar connection window is provided at an upper end portion of a side surface of the main body.

[0014] According to a preferred embodiment of the present invention, the main body is in the shape of a regular triangular prism, a regular quadrangular prism or a regular hexagonal prism.

[0015] According to a preferred embodiment of the present invention, the upper end of the main body includes a plurality of partition walls extending from the side prisms of the main body toward the interior of the main body, so that when the end connector of the light bar is inserted into the light bar connection window, the end connector establishes a mechanical connection with the partition walls on both sides thereof.

[0016] According to a preferred embodiment of the present invention, a fixing groove is provided on each partition wall, so that when the end connector of the light strip is inserted into the light strip connection window, the light strip clips on both sides of the end connector are respectively embedded in the fixing grooves on the partition wall to form the mechanical connection.

[0017] A stacking connector for connecting two connectors described above, the two connectors being referred to as a first connector and a second connector. The stacking connector includes an upper expansion connector and a lower expansion connector extending in opposite directions. The upper expansion connector is used to establish an electrical connection with the lower expansion interface of the first connector installed above the stacking connector, and the lower expansion connector is used to establish an electrical connection with the upper expansion interface of the second connector installed below the stacking connector.

[0018] According to a preferred embodiment of the present invention, the upper expansion joint and the lower expansion joint respectively include three spring pins.

[0019] According to a preferred embodiment of the present invention, the stacking connector further includes an upper extension buckle and a lower extension buckle extending in opposite directions, the upper extension buckle is used to be engaged and connected with the lower buckle piece of the first connector, and the lower extension buckle is used to be engaged and connected with the upper buckle piece of the second connector.

[0020] According to a preferred embodiment of the present invention, the upper expansion buckle is columnar and the upper end portion includes a crown-shaped buckle.

[0021] A stacking connector assembly includes two connectors described above and one stacking connector described above. The two connectors are connected in a three-dimensional stacking manner through the stacking connector and are used to connect light strips on two planes at different heights.

[0022] The connector of the present invention can detachably connect multiple light strips simultaneously, allowing multiple light strips to be easily connected together to form patterns of various shapes. Furthermore, the connector of the present invention is provided with upper and lower expansion interfaces, enabling two stacked connectors to be connected together via a stacking connector having upper and lower connection joints to form a stacking connector assembly. This stacking connector assembly can three-dimensionally arrange light strips on two planes at different heights, thereby achieving a three-dimensional lighting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of a connector and a light bar according to an embodiment of the present invention;

[0024] Figure 2 is an exploded schematic diagram of a connector according to an embodiment of the present invention;

[0025] Figure 3A is a top view of a connector according to an embodiment of the present invention;

[0026] Figure 3B is a longitudinal sectional view of a connector according to an embodiment of the present invention;

[0027] Figure 3C is a bottom view of a connector according to an embodiment of the present invention;

[0028] Figure 4 is a schematic diagram of a stacked connector assembly according to an embodiment of the present invention;

[0029] Figure 5 is a longitudinal sectional view of a stacked connector assembly according to an embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 1-light bar, 11-end connector, 111-light bar buckle;

[0032] 2-connector, 20-main body, 201-light bar connection window, 202a, 202b-partition walls, 203-upper buckle, 204-lower buckle, 21-upper PCBA board, 211-light bar electrical connection interface, 212-upper through hole, 213-upper expansion interface; 22-lower PCBA board, 221-lower expansion interface, 222-lower through hole, 23-lower fixing part, 231-rotating connector, 24-double-sided tape, 25-lower fixing screw, 26-upper fixing part, 261-lower connection buckle, 27-upper PCBA board fixing screw;

[0033] 3- stacking connector, 30- stacking connector upper surface, 301- upper expansion joint, 302- upper expansion buckle, 31- stacking connector lower surface, 311- lower expansion joint, 312- lower expansion buckle. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present invention clearer, exemplary embodiments are described in detail below with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and does not serve as any limitation to the present invention and its application or use. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present invention thorough and complete and to fully express the scope of the present invention to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not restrictive.

[0035] As used herein, the terms "first," "second," and similar terms do not denote any order, quantity, or importance; they are merely used to distinguish one part from another. Terms such as "include" or "comprise" mean that the elements preceding the term include the elements listed after the term, and do not exclude the possibility of other elements also being included. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positions.

[0036] Figure 1 FIG is a schematic diagram of a light bar and a connector according to an embodiment of the present invention. Figure 1 As shown, the light bar 1 includes end connectors 11 at both ends. The light bar 1 is connected to the connector 2 through the end connectors 11. The connector 2 includes a columnar body 20 and an upper PCBA board 21 disposed inside the body. The body 20 also includes a lower PCBA board 22 below the upper PCBA board 21. The upper PCBA board 21 and the lower PCBA board 22 can be electrically connected to each other, for example, by a plug and socket connection. The specific structure of the upper PCBA board 21 and the lower PCBA board 22 can be seen from Figure 2 as well as Figures 3A to 3BAs can be seen in the figure. The side of the main body 20 is provided with multiple light bar connection windows 201 in different directions for receiving the end connectors 11 of the light bar 1. An upper expansion interface 213 is provided on the upper surface of the upper PCBA board 21 for establishing an electrical connection with the lower expansion connector 311 of the stacking connector 3. A lower expansion interface 221 is provided on the lower surface of the lower PCBA board 22 for establishing an electrical connection with the upper expansion connector 301 of the stacking connector 3. By providing the upper expansion interface 213 and the lower expansion interface 221, two identical connectors can be connected together in a stacked manner through the stacking connector 3, so that light strips can be connected on two planes at different heights, thereby achieving a three-dimensional lighting effect.

[0037] exist Figure 1 In the figure, for the sake of easy understanding, the reference numeral 201 only identifies one light bar connection window. Figure 1 The figure clearly shows the other five light bar connection windows that are identical to the light bar connection window 201. Therefore, the connector 2 in this embodiment can connect to six light bar connectors at the same time. Since the orientation of each light bar connection window is different, the connector 2 can connect the light bar in six different directions. A light bar electrical connection interface 211 corresponding to the light bar connection window 201 is provided on the upper surface of the upper PCBA board 21. When the end connector 11 of the light bar 1 is inserted into the light bar connection window 201, the main body 20 can establish a mechanical connection with the end connector 11 of the light bar 1, and the light bar electrical connection interface 211 can establish an electrical connection with the end connector 11 of the light bar 1.

[0038] In this embodiment, the connector 2 is in the shape of a regular hexagonal prism. The light bar connection windows 201 are arranged at the upper ends of the six side surfaces of the regular hexagonal prism-shaped main body 20. In other embodiments, the shape of the connector can be a regular prism with no less than three sides, such as a regular triangular prism, a regular square prism, a regular pentagonal prism, etc. A light bar connection window can be provided at the upper end of each side surface of the regular prism-shaped connector. It should be noted that the shape of the connector is not limited to a regular prism, and other shapes such as a cylinder or a cone can also be adopted. The light bar connection windows can be arranged at equal intervals at the upper end of the cylindrical surface or the conical surface.

[0039] In this embodiment, the upper end of the prismatic main body 20 includes a plurality of partition walls 202a, 202b extending from the side edges of the main body 20 toward the interior of the main body 20. When the end connector 11 of the light bar 1 is inserted into the light bar connection window 201, the end connector 11 establishes a mechanical connection with the partition walls 202a, 202b on both sides. At this time, the end connector 11 is clamped between the partition walls 202a, 202b on both sides and is fixed in the connection position by the partition walls 202a, 202b on both sides. It should be noted that, for ease of understanding, the reference numerals 202a and 202b only identify two adjacent partition walls. However, in Figure 1It can be clearly seen that six partition walls are provided in the main body 20. These six partition walls separate the upper end of the side wall of the main body 20 into six light bar connection windows facing in different directions.

[0040] In this embodiment, the mechanical connection between the end connector 11 of the light bar 1 and the partition walls 202a, 202b of the connector 2 can be achieved through a snap-fit ​​structure. Specifically, a fixing groove can be provided on each partition wall 202a, 202b. When the end connector 11 of the light bar 1 is inserted into the light bar connection window 201, the light bar clips 111 on both sides of the end connector 11 are respectively engaged with the fixing grooves on the partition walls 202a, 202b on both sides to form a mechanical connection. It should be understood that the width of the fixing groove on each partition wall 202a, 202b can be set to be greater than or equal to the width of the two light bar clips 111. In fact, since two adjacent light bar connection windows will share a partition wall in the middle of them, the fixing groove on the middle partition wall may need to receive the light bar clips 111 on the end connectors 11 of two adjacent light bars, so the width of the fixing groove needs to be set to be greater than or equal to the width of the two light bar clips. In addition, the positions of the light bar clips 111 on both sides of the end connector 11 of each light bar need to be staggered so that they can share the same fixing groove with adjacent light bars when inserted into the light bar connection window. In other embodiments, two separate fixing grooves can also be provided on each partition wall, respectively for receiving the two light bar clips on the two adjacent end connectors 11 facing the same partition wall.

[0041] Figure 2 2 is an exploded schematic diagram of a connector according to an embodiment of the present invention. Figure 3A 、 Figure 3B and Figure 3C They are Figure 1 The top view, cross-sectional view and bottom view of the connector 2 shown in FIG. Figure 2 and Figures 3A to 3C , a detailed introduction to the connector 2 according to an embodiment of the present invention is given.

[0042] exist Figure 2 In the illustrated embodiment, the connector 2 includes, from top to bottom, an upper fixing member 26 , an upper PCBA board 21 , a main body 20 , a lower PCBA board 22 , a lower fixing member 23 , double-sided tape 24 , and lower fixing member fixing screws 25 .

[0043] like Figure 2 and Figure 3AAs shown, the upper PCBA board 21 has mounting slots corresponding to the partition walls 202a, 202b of the main body 20. When the upper PCBA board 21 is installed in the main body 20, each partition wall 202a, 202b fits into its corresponding mounting slot. This mounting arrangement of the upper PCBA board 21 not only enhances the stability of the upper PCBA board's mounting structure, but also maximizes the usable area of ​​the upper PCBA board 21, improving space utilization within the main body 20. To further secure the upper PCBA board 21, upper PCBA board fixing screws 27 are used to secure the upper PCBA board 21 to the main body 20.

[0044] In the present embodiment, a light bar electrical connection interface 211 is provided on the upper surface of the upper PCBA board 21 at a position corresponding to the light bar connection window 201. Specifically, the light bar electrical connection interface 211 can be realized by a soldering pad provided on the upper PCBA board. Each group of light bar electrical connection interfaces 211 may include three soldering pads, which are respectively used for power connection, ground connection and control signal connection. When the end connector 11 of the light bar 1 is inserted into the light bar connection window 201, the three electrical connection contacts of the end connector 11 are respectively electrically connected to the three soldering pads of the light bar electrical connection interface 211 so as to receive power and control signals from the connector 2. In the present embodiment, for ease of understanding, the reference numeral 211 only identifies one group of light bar electrical connection interfaces. However, in Figure 3A It can be clearly seen that there are six sets of light strip electrical connection interfaces on the upper PCBA board, which are used to establish electrical connections with six light strips inserted in different directions.

[0045] In this embodiment, an upper expansion interface 213 is further provided on the upper surface of the upper PCBA board 21. Figure 4 As shown, when the stacking connector 3 is mounted on the main body 20 of the connector below, the lower expansion connector 311 of the stacking connector 3 establishes an electrical connection with the upper expansion interface 213. The lower expansion connector 311 may specifically include three spring pins (pogo pins), and the upper expansion interface 213 may include three pads corresponding to the three spring pins. The three spring pins respectively contact the three pads on the upper PCBA board 21 to establish power connection, ground connection and control signal connection. Figure 3A The upper PCBA board 21 shown in the figure is provided with three groups of upper expansion interfaces (a total of nine pads). These three groups of upper expansion interfaces are spaced 120 degrees apart from each other, so that the lower expansion connector 311 can establish an electrical connection with the upper PCBA board 21 at three different positions rotated relative to the main body 20.

[0046] In this embodiment, the upper PCBA board 21 further includes an upper through hole 212. In the connector 2, the main body 20 is provided with an upper buckle 203 below the upper through hole 212. The upper buckle 203 can be engaged with the lower connecting buckle 261 of the upper fixing member 26. Figure 3B As shown, when the upper fixing member 26 is connected to the connector 20, the lower connecting buckle 261 passes through the upper through hole 212 and is engaged with the upper buckle member 203. The number of the lower connecting buckle 261, the upper through hole 212 and the upper buckle member 203 can all be three, so as to form three groups of engaged connections. By connecting the upper fixing member 26 to the main body 20, the upper PCBA board can be further fixed inside the main body 20. In addition, the upper fixing member 26 can also close the upper part of the main body 20 to improve the appearance of the connector 2. The upper buckle member 203 can also be engaged with the lower expansion buckle 312 of the stacked connector 3. As shown Figure 4 and Figure 5 As shown, when the stacking connector 3 is connected to the connector below, the lower extension buckle 312 of the stacking connector 3 passes through the upper through hole 212 and is engaged with the upper buckle 203. The number of the lower extension buckle 312, the upper through hole 212, and the upper buckle 203 can all be three, so as to form three sets of interlocking connections.

[0047] In this embodiment, the connector 2 further includes a lower PCBA board 22. A connection plug may be provided on the lower side of the upper PCBA board 21, and a connection socket may be provided on the upper side of the lower PCBA board 22. When the upper PCBA board 21 and the lower PCBA board 22 are installed in the main body 20, the connection plug of the upper PCBA board 21 is inserted into the connection socket of the lower PCBA board 22, so that the circuits of the upper PCBA board 21 and the lower PCBA board 22 are interconnected. A lower expansion interface 221 is provided on the lower surface of the lower PCBA board 22 for electrically connecting to the upper expansion connector 301 of the stacking connector 3, so as to realize the stacking connection of multiple connectors. Figure 4 As shown, when the stacking connector 3 is mounted on the upper connector body 20, the upper expansion connector 301 of the stacking connector 3 establishes an electrical connection with the lower expansion interface 221 of the connector. The upper expansion connector 301 may include three pogo pins, and the lower expansion interface 221 may include three solder pads corresponding to the three pogo pins. The three pogo pins contact three solder pads on the lower PCBA board 22, respectively, to establish power, ground, and control signal connections.

[0048] In this embodiment, the connector 2 also includes a lower connecting mechanism. The lower connecting mechanism includes a lower buckle 204. The lower buckle 204 may specifically include a plurality of latches distributed in an annular manner and spaced apart from each other. The lower connecting mechanism can be detachably connected to the lower fixing member 23. The lower fixing member 23 includes a rotary connector 231 extending vertically upward. The rotary connector 231 can be detachably and rotatably connected to the lower buckle 204. The rotary connector 231 can be columnar and arranged in the center of the lower fixing member 23. The upper end of the rotary connector 231 includes a crown-shaped buckle. A lower through hole 222 is provided in the center of the lower PCBA board 22. The rotary connector 231 of the lower fixing member 23 passes through the lower through hole 222 and is engaged with the lower buckle 204 in the main body 20. Figure 3B A cross-sectional view of the rotary connector 231 and the lower buckle 204 in a connected state is specifically shown. In this embodiment, the lower fixing member 23 may further include a screw hole for fixing the lower fixing member 23 to the surface of the object on which the connector 2 is arranged (e.g., a wall) by means of a lower fixing member fixing screw 25. Optionally or alternatively, the lower fixing member 23 may further include a double-sided tape 24 for fixing the lower fixing member 23 to the surface of the object on which the connector 2 is arranged (e.g., a wall). When installing the connector on, for example, a wall, the lower fixing member 23 may be first fixed to the wall (e.g., by means of a lower fixing member fixing screw 25 and / or double-sided tape 24), and then the lower fixing member 23 may be connected to the main body 20 of the connector 2. The user can rotate and adjust the position of the main body 20 of the connector 2 as needed to achieve the desired light bar connection effect.

[0049] The lower connecting mechanism of the connector 2 can also be detachably connected to the stacking connector 3. Figure 4 and Figure 5 As shown, when the stacking connector 3 is connected to the connector above, the upper extension buckle 302 of the stacking connector 3 is engaged with the lower buckle member 204 through the lower through hole 222 of the lower PCBA board 22. The upper end of the upper extension buckle 302 includes a crown-shaped buckle for engaging with the annular lower buckle member 204.

[0050] Figure 4 and Figure 5 The exploded view and cross-sectional view of the stacked connector assembly according to an embodiment of the present invention are shown respectively. Figure 5As shown, the stacking connector assembly includes the two connectors described above and a stacking connector 3 that connects the two connectors together. The connector located above the stacking connector 3 is called the first connector, and the connector located below the stacking connector 3 is called the second connector. The stacking connector 3 includes an upper surface 30 and a lower surface 31. The upper surface 30 includes an upper expansion connector 301 extending upward, and the lower surface 31 includes a lower expansion connector 311 extending downward. The upper expansion connector 301 and the lower expansion connector 311 extend from the stacking connector 3 in opposite directions. The upper expansion connector 301 establishes an electrical connection with the lower expansion interface 221 of the first connector, and the lower expansion connector 311 establishes an electrical connection with the upper expansion interface 213 of the second connector. The upper expansion connector 301 and the lower expansion connector 311 can each include three pogo pins. The upper expansion connector 301 and the lower expansion connector 311 are electrically connected, thereby electrically connecting the first connector and the second connector to transmit power and control signals.

[0051] In this embodiment, the stacking connector 3 further includes an upper extension buckle 302 and a lower extension buckle 312 extending in opposite directions. The upper extension buckle 302 is columnar and includes a crown-shaped buckle at the upper end. The upper extension buckle 302 is engaged with the lower buckle 204 of the first connector. The lower extension buckle 312 is engaged with the upper buckle 203 of the second connector. By the buckle connection of the stacking connector 3 with the first connector and the second connector, the first connector and the second connector are fixed together by the stacking connector 3 to form a three-dimensional stacking connector assembly. A mounting bracket can be installed above the first connector. Figure 2 The upper fixing member 26 shown in FIG. The lower portion of the second connector can be installed Figure 2 The lower fixing member 23 shown in FIG. 2 is used to mount the stacked connector assembly to an object (e.g., a wall) supporting the stacked connector assembly. In this embodiment, a two-layer connector assembly is formed by two connectors and one stacked connector 3. It should be understood that in other embodiments, more layers of stacked connector assemblies can be formed by using more connectors and stacked connectors.

[0052] Thus far, various embodiments of the present invention have been described in detail. To avoid obscuring the concept of the present invention, some details well known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions of the present invention.

[0053] Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art will understand that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced with equivalents without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A connector for connecting a light bar, characterized in that: The invention comprises a columnar main body (20) and an upper PCBA board (21) and a lower PCBA board (22) arranged inside the main body (20); a plurality of light bar connection windows (201) with different orientations are provided on the side of the main body (20) for receiving the end connector (11) of the light bar (1); the end connector (11) is used to establish an electrical connection with the upper PCBA board (21); an upper expansion interface (213) is provided on the upper surface of the upper PCBA board (21) for establishing an electrical connection with the lower expansion connector (311) of the stacking connector (3); a lower expansion interface (221) is provided on the lower surface of the lower PCBA board (22) for establishing an electrical connection with the upper expansion connector (301) of the stacking connector (3); The upper PCBA board (21) is provided with an upper through hole (212), and an upper buckle (203) is provided in the main body (20) below the upper through hole (212) for engaging with the lower extension buckle (312) of the stacking connector (3). The lower PCBA board (22) is provided with a lower through hole (222), and a lower buckle (204) is provided in the main body (20) above the lower through hole (222) for engaging with the upper extension buckle (302) of the stacking connector (3).

2. The connector according to claim 1, wherein: The lower buckle member (204) comprises a plurality of latch tongues distributed in an annular manner and spaced apart from each other.

3. The connector according to claim 1, wherein: The upper expansion interface (213) and the lower expansion interface (221) respectively include three pads for power connection, ground connection and control signal connection.

4. The connector according to claim 1, wherein: A light bar electrical connection interface (211) is provided on the upper surface of the upper PCBA board (21); when the end connector (11) of the light bar (1) is inserted into the light bar connection window (201), the main body (20) can establish a mechanical connection with the end connector (11) of the light bar (1), and the light bar electrical connection interface (211) can establish an electrical connection with the end connector (11) of the light bar (1).

5. The connector according to claim 1, wherein: The main body (20) is in the shape of a regular prism, and the light bar connection window (201) is arranged at the upper end of the side surface of the main body (20).

6. The connector according to claim 5, wherein: The main body (20) is in the shape of a regular triangular prism, a regular quadrangular prism or a regular hexagonal prism.

7. The connector according to claim 5, wherein: The upper end of the main body (20) includes a plurality of partition walls (202a, 202b) extending from the side prisms of the main body (20) toward the interior of the main body (20), so that when the end connector (11) of the light bar (1) is inserted into the light bar connection window (201), the end connector (11) establishes a mechanical connection with the partition walls (202a, 202b) on both sides thereof.

8. The connector according to claim 7, wherein: Each partition wall (202a, 202b) is provided with a fixing groove, so that when the end connector (11) of the light bar (1) is inserted into the light bar connection window (201), the light bar buckles (111) on both sides of the end connector (11) are respectively embedded in the fixing grooves on the partition wall (202a, 202b), forming the mechanical connection.

9. A stacked connector for connecting two connectors according to claims 1 to 8, the two connectors being respectively referred to as a first connector and a second connector, characterized in that: The stacking connector comprises an upper expansion connector (301) and a lower expansion connector (311) extending in opposite directions, the upper expansion connector (301) being used to establish an electrical connection with a lower expansion interface (221) of a first connector installed above the stacking connector (3), and the lower expansion connector (311) being used to establish an electrical connection with an upper expansion interface (213) of a second connector installed below the stacking connector (3).

10. The stacking connector according to claim 9, wherein: The upper expansion joint (301) and the lower expansion joint (311) respectively include three spring pins.

11. The stacking connector according to claim 9, wherein: The stacked connector (3) further comprises an upper extension buckle (302) and a lower extension buckle (312) extending in opposite directions, the upper extension buckle (302) being used for engaging and connecting with the lower buckle member (204) of the first connector, and the lower extension buckle (312) being used for engaging and connecting with the upper buckle member (203) of the second connector.

12. The stacking connector according to claim 11, wherein: The upper expansion buckle (302) is cylindrical and has a crown buckle at the upper end.

13. A stacked connector assembly, characterized in that: The stacking connector assembly comprises two connectors according to any one of claims 1 to 8 and a stacking connector (3) according to any one of claims 9 to 12, wherein the two connectors are connected in a three-dimensional stacking manner via the stacking connector (3) and are used to connect light strips on two planes at different heights.

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