A light driver structure

Abstract

The utility model embodiment provides a kind of light driver structure, comprising: upper shell, metal lower shell, PCBA board, female end connector and multiple SMT conductive particles;Upper shell and metal lower shell jointly enclose and form the relatively closed hollow cavity, PCBA board is positioned and set in hollow cavity;The setting cavity structure on upper shell is set to the first end surface of upper shell relative to the protrusion towards metal lower shell, and the opening end of setting cavity structure is located on the second end surface of upper shell, and interface structure is set on the second end surface of upper shell, interface structure is set along the direction of first direction and away from the direction of upper shell, and interface structure is surrounded around the opening end of setting cavity structure;Female end connector is set in setting cavity structure;Multiple SMT conductive particles are respectively set in the edge position of the end surface four around of PCBA board close to metal lower shell, and when upper shell and metal lower shell fixed connection, each SMT conductive particle is compressed and fixed between PCBA board and metal lower shell in the first direction.

Description

Technical Field

[0001] This utility model relates to the field of vehicle technology, and more specifically, to a light driver structure. Background Technology

[0002] The headlight driver control module, as the core electronic device managing the vehicle's lighting system, is typically installed inside or around the headlight. This module is responsible for controlling the headlights' on / off state, adjusting brightness, and switching between five lighting modes: low beam, high beam, daytime running lights, position lights, and turn signals. In actual operation, the headlight driver operates in an extremely complex environment, often with multiple lights energized simultaneously, resulting in high power consumption. This not only severely tests the heat dissipation performance of the entire controller but also places extremely high demands on electromagnetic compatibility (EMC) and other related performance aspects. Especially during nighttime driving or in inclement weather, the headlight driver needs to operate continuously and stably to ensure that the driver can adjust the headlight brightness and direction to obtain optimal lighting effects under different road conditions, thus ensuring driving safety. However, the performance of existing headlight drivers under complex operating conditions remains a key technical problem that urgently needs to be solved. Utility Model Content

[0003] This application provides a light driver structure that solves at least one of the problems in the prior art.

[0004] According to an embodiment of this application, a light driver structure is provided, including: an upper shell, a metal lower shell, a PCBA (Printed Circuit Board Assembly) board, a female connector, and multiple SMT (Surface Mount Technology) conductive particles;

[0005] The upper shell and the lower metal shell are connected by a snap-fit ​​structure and sealed with sealant to form a relatively closed hollow cavity. The PCBA board is positioned within the hollow cavity. The upper shell has a mounting cavity structure that protrudes towards the lower metal shell relative to the first end face of the upper shell. The opening end of the mounting cavity structure is located on the second end face of the upper shell. The second end face of the upper shell has an interface structure that extends away from the upper shell along the first direction and surrounds the opening end of the mounting cavity structure. The female connector is located within the mounting cavity structure, and its connector passes through the mounting cavity structure to one side of the first end face of the upper shell, electrically connecting to the PCBA board. Multiple SMT conductive particles are respectively located on the edge of the PCBA board near the lower metal shell. When the upper shell and the lower metal shell are fixedly connected, each SMT conductive particle is pressed and fixed between the PCBA board and the lower metal shell in the first direction.

[0006] Wherein, the first direction is a direction perpendicular to the PCBA board.

[0007] In some embodiments of this application, the mounting cavity structure is provided with two first positioning posts on the end face near the lower metal shell, and the two first positioning posts are distributed non-mirrorically. The PCBA board is provided with two first positioning holes, and each first positioning hole is respectively provided with two first positioning posts. The PCBA board is positioned on the upper shell by inserting the two first positioning posts into the corresponding first positioning holes.

[0008] In some embodiments of this application, the snap-fit ​​structure includes multiple snap-fit ​​blocks and multiple snap-fit ​​slots; the multiple snap-fit ​​blocks are respectively disposed at the four edges of the lower metal shell, and each snap-fit ​​block extends in a direction away from the lower metal shell on a plane constructed based on a second direction and a third direction; the four edges of the upper shell are each provided with a snap-fit ​​plate, the snap-fit ​​plate extends in a direction close to the lower metal shell along the first direction; the multiple snap-fit ​​slots are respectively disposed on the snap-fit ​​plate, and each snap-fit ​​slot corresponds to one of the multiple snap-fit ​​blocks; the upper shell and the lower metal shell are snap-fit ​​connected by each snap-fit ​​block being snapped into the corresponding snap-fit ​​slot.

[0009] Wherein, the first direction, the second direction, and the third direction are perpendicular to each other.

[0010] In some embodiments of this application, a sealing groove is provided on the first end face of the upper shell, and the sealing groove is arranged in a circumferential manner around the periphery of the first end face of the upper shell. An annular protrusion is provided on the end face of the lower metal shell near the upper shell, and the shape and size of the annular protrusion correspond to the shape and size of the sealing groove. The sealant is disposed in the sealing groove. When the upper shell and the lower metal shell are connected by the snap-fit ​​structure, the annular protrusion is bonded to the sealing groove by the sealant.

[0011] In some embodiments of this application, an annular support plate is provided on the first end face of the upper shell. The annular support plate extends along the first direction toward the metal lower shell, and the sealing groove surrounds the outer side of the annular support plate. Multiple support protrusions are provided on the end face of the annular support plate near the metal lower shell. When the PCBA board is positioned and connected to the upper shell, the edge of the end face of the PCBA board near the upper shell abuts against the multiple support protrusions.

[0012] In some embodiments of this application, a rectangular protrusion is provided in the middle of the upper shell, and the rectangular protrusion is convex from the first end face in a direction away from the second end face. The mounting cavity structure and the annular support plate are both disposed in the rectangular protrusion, and the sealing groove is formed by the annular support plate and the inner side of the rectangular protrusion.

[0013] In some embodiments of this application, the interface structure is disposed on the rectangular protrusion, and the interface structure is convex from the end face of the rectangular protrusion in a direction away from the upper shell. The mounting cavity structure is disposed inside the interface structure, and the mounting cavity structure is a rectangular body structure. Multiple strip reinforcing ribs are provided between the outer surface of the mounting cavity structure and the inner surface of the interface structure.

[0014] In some embodiments of this application, a first mounting hole is provided at each of the two corners of one end of the upper shell along the second direction, and a second mounting hole is provided at the middle of the other end of the upper shell along the second direction. Each of the first and second mounting holes is provided with two trapezoidal reinforcing ribs symmetrically arranged along their diameter direction. The two right-angled sides of each trapezoidal reinforcing rib are fixedly connected to the outer surface of the rectangular protrusion and the second end face of the upper shell, respectively. Two second positioning posts are provided on the second end face of the upper shell, and the two second positioning posts are respectively located on one side of the second mounting hole and one of the first mounting holes. The lower metal shell is provided with... Three third mounting holes are provided, and the three third mounting holes are respectively set to correspond one-to-one with two first mounting holes and one second mounting hole. The metal lower shell is provided with two second positioning holes, and the two second positioning holes are respectively set to correspond one-to-one with two first positioning posts. The two second positioning posts are respectively inserted into their corresponding second positioning holes. The upper shell and the metal lower shell are positioned and installed together. After the upper shell and the metal lower shell are connected, the three third mounting holes are respectively set to correspond one-to-one with two first mounting holes and one second mounting hole to form three mounting interfaces for fixed connection between the light driver structure and the lamp.

[0015] The second direction is the direction of the long side of the PCBA board, and the first direction is perpendicular to the second direction.

[0016] In some embodiments of this application, at least one mounting protrusion is provided on each of the four sides of the inner cavity of the lower metal shell, and the height of each mounting protrusion corresponds to the height of the SMT conductive particle in the first direction. When the PCBA board is positioned and installed between the upper shell and the lower metal shell, the four corners of the PCBA board are fixedly connected to the lower metal shell by adhesive. The PCBA board is abutted and fixed on multiple mounting protrusions. Each SMT conductive particle has a certain amount of compression in the first direction, and the heating device on the PCBA board is connected to the lower metal shell by thermally conductive adhesive.

[0017] In some embodiments of this application, a sealing ring is also included; the sealing ring is disposed around the outside of the interface structure for sealing connection between the upper shell and the lamp.

[0018] The beneficial effects of the embodiments of this application are as follows:

[0019] This light driver structure adopts a press-fit connection solution, integrating the female connector's housing and the upper housing into a single injection-molded unit, saving on connector costs. Furthermore, the upper and lower housings use a snap-fit ​​connection, eliminating the need for screws and reducing screw costs, resulting in a simpler and lighter product while simplifying the assembly process. Simultaneously, the light driver structure ensures a tight seal through the sealant combination between the upper and lower metal housings. When the controller is assembled onto the headlight, the sealing ring ensures the controller's protection level, and thermally conductive adhesive is applied to the heat-generating components to ensure adequate heat dissipation.

[0020] Furthermore, this light driver structure incorporates soldered SMT conductive particles, which are axially compressed within the hollow cavity by the PCBA board and the lower metal shell. The PCBA board and the lower metal shell are further secured by adhesive, thus further tightening the bond between them. This allows signal noise in the PCBA board to be guided to the lower metal shell through the SMT conductive particles, successfully solving the EMC grounding problem in existing technologies and ensuring EMC functionality. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a first-view structural diagram of a light driver structure provided in an embodiment of this application;

[0023] Figure 2 This is a second-view structural diagram of a light driver structure provided in an embodiment of this application;

[0024] Figure 3 This is an exploded structural diagram of a light driver structure provided in an embodiment of this application;

[0025] Figure 4 This is a schematic diagram of the upper shell in a light driver structure provided in an embodiment of this application;

[0026] Figure 5 This is a schematic diagram of the PCBA board in a light driver structure provided in an embodiment of this application;

[0027] Figure 6 This is a first-view structural diagram of the metal lower shell in a light driver structure provided in an embodiment of this application;

[0028] Figure 7 This is a second-view structural diagram of the metal lower shell in a light driver structure provided in an embodiment of this application;

[0029] Figure 8 This is a schematic diagram of the PCBA board positioned in the upper shell in a light driver structure provided in an embodiment of this application;

[0030] Figure 9 This is a front view schematic diagram of a light driver structure provided in this application, showing the PCBA board positioned in the upper shell.

[0031] Figure 10 This is a partial schematic diagram of a light driver structure provided in this application, showing the PCBA board mounted on a metal lower shell.

[0032] Explanation of reference numerals in the attached drawings: 1 is the upper shell, 11 is the mounting cavity structure, 12 is the first end face of the upper shell 1, 13 is the second end face of the upper shell 1, 14 is the interface structure, 15 is the first positioning post, 16 is the retaining plate, 17 is the sealing groove, 18 is the annular support plate, 19 is the support protrusion, 110 is the rectangular protrusion, 111 is the strip reinforcing rib, 112 is the first mounting hole, 113 is the second mounting hole, 114 is the trapezoidal reinforcing rib, 115 is the second positioning post, 116 is the sealing ring, 2 is the metal lower shell, 21 is the annular protrusion, 22 is the third mounting hole, 23 is the second positioning hole, 24 is the mounting boss, 3 is the PCBA board, 31 is the first positioning hole, 4 is the female connector, 41 is the connector, 5 is the SMT conductive particle, 6 is the snap-fit ​​structure, 61 is the snap block, 62 is the snap groove, 7 is the sealant, 8 is the adhesive, and 9 is the thermally conductive adhesive. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0034] It should be noted that the terms "comprising" and "having," and any variations thereof, in the embodiments and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, it may include a series of structures, without being limited to the structures listed, but may optionally include structures not listed, or may optionally include other components inherent to these structures.

[0035] This application discloses a light driver structure. These will be described in detail below.

[0036] Figure 1 – Figure 3 A light driver structure according to an embodiment of this application is shown. Figure 1 – Figure 3 As shown, the light driver structure mainly includes: an upper shell 1, a lower metal shell 2, a PCBA board 3, a female connector 4, and multiple SMT conductive particles 5. The upper shell 1 and the lower metal shell 2, connected by a snap-fit ​​structure 6, together constitute the main housing structure of the light driver, which is used to fix and install the PCBA board 3 and the female connector 4. It has lightweight characteristics. At the same time, by adding multiple SMT conductive particles 5, the light driver structure allows signal noise in the PCBA board 3 to be conducted to the lower metal shell 2 through the SMT conductive particles 5, effectively solving the EMC grounding problem in the prior art and meeting the EMC performance requirements.

[0037] Specifically, the upper shell 1 and the lower metal shell 2 are connected by a snap-fit ​​structure 6 and sealed with sealant 7, forming a relatively closed hollow cavity. The PCBA board 3 is positioned within the hollow cavity. The upper shell 1 is provided with a mounting cavity structure 11, which protrudes towards the lower metal shell 2 relative to the first end face 12 of the upper shell 1. The opening end of the mounting cavity structure 11 is located on the second end face 13 of the upper shell 1 to facilitate the fixed installation of the female connector 4 on the upper shell 1. The female connector 4 is disposed within the mounting cavity structure 11, and the connector 41 of the female connector 4 passes through the mounting cavity structure 11 to one side of the first end face 12 of the upper shell 1, and is electrically connected to the PCBA board 3. Thus, this application adopts a press-fit connection scheme, which integrates the connector shell and the upper shell 1 into one piece, saving connector costs. Additionally, an interface structure 14 is provided on the second end face 13 of the upper shell 1. The interface structure 14 extends in a direction away from the upper shell 1 along a first direction and surrounds the opening end of the mounting cavity structure 11. This interface structure 14 facilitates the connection between the light driver structure and the lamp. Furthermore, multiple SMT conductive particles 5 are respectively disposed on the edge of the end face of the PCBA board 3 near the lower metal shell 2. When the upper shell 1 and the lower metal shell 2 are fixedly connected, each SMT conductive particle 5 is pressed and fixed between the PCBA board 3 and the lower metal shell 2 in a first direction. Thus, the SMT conductive particles 5 are internally pressed by the PCBA board 3 and the lower metal shell 2 in a first direction, ensuring their grounding performance. In some specific implementations, the light driver structure may use soldered SMT conductive particles 5.

[0038] In this application, the first direction is a direction perpendicular to the PCBA board 3, and the second and third directions are the directions of two adjacent sides of the PCBA board 3, respectively, with each of the first, second, and third directions being mutually perpendicular. In some specific implementations, the second direction is the direction of the long side of the PCBA board 3, and the third direction is the direction of the wide side of the PCBA board 3. However, it should be noted that the perpendicularity in this embodiment is not absolute and can be 90° ± 10°.

[0039] In some embodiments, such as Figure 3 , Figure 4 , Figure 5 and Figure 8 As shown, two first positioning posts 15 are provided on the end face of the mounting cavity structure 11 near the metal lower shell 2, and the two first positioning posts 15 are distributed non-mirror symmetrically. Correspondingly, two first positioning holes 31 are provided on the PCBA board 3, and each first positioning hole 31 is respectively set to correspond one-to-one with the two first positioning posts 15. Thus, the two first positioning posts 15 can be inserted into the corresponding first positioning holes 31 respectively, so that the PCBA board 3 is positioned on the upper shell 1, ensuring that the connector 41 of the female connector 4 is accurately electrically connected to the PCBA board 3, and realizing the positioning connection between the PCBA board 3 and the upper shell 1.

[0040] In other embodiments, such as Figure 1 , Figure 2 , Figure 4 , Figure 6 and Figure 7 As shown, the snap-fit ​​structure 6 includes multiple snap-fit ​​blocks 61 and multiple snap-fit ​​slots 62. The snap-fit ​​connection between the upper shell 1 and the lower metal shell 2 is achieved by snapping the snap-fit ​​blocks 61 into the slots 62. Specifically, multiple snap-fit ​​blocks 61 are respectively disposed at the four edges of the lower metal shell 2, and each snap-fit ​​block 61 extends away from the lower metal shell 2 on a plane constructed based on a second direction and a third direction. Each edge of the upper shell 1 is provided with a snap-fit ​​plate 16, which extends towards the lower metal shell 2 along a first direction. Multiple snap-fit ​​slots 62 are respectively disposed on the snap-fit ​​plates 16, and each slot 62 corresponds one-to-one with a snap-fit ​​block 61. When the upper shell 1 and the lower metal shell 2 are connected, the multiple snap-fit ​​plates 16 surround the lower metal shell 2, and each snap-fit ​​block 61 is engaged in the corresponding slot 62, resulting in a snap-fit ​​connection between the upper shell 1 and the lower metal shell 2. This light driver structure eliminates screw assembly, saving screw costs, making the product simpler and lighter, and also simplifying the assembly process.

[0041] In other embodiments, such as Figure 2 , Figure 4 and Figure 6As shown, a sealing groove 17 is provided on the first end face 12 of the upper shell 1. The sealing groove 17 is arranged in a ring shape around the perimeter of the first end face 12 of the upper shell 1. Correspondingly, an annular protrusion 21 is provided on the end face of the metal lower shell 2 near the upper shell 1. The shape and size of the annular protrusion 21 correspond to the shape and size of the sealing groove 17. The sealant 7 is disposed in the sealing groove 17. When the upper shell 1 and the metal lower shell 2 are connected by the snap-fit ​​structure 6, the annular protrusion 21 is bonded to the sealing groove 17 by the sealant 7. Thus, the design of the sealing groove 17 and the annular protrusion 21, as well as the matching design of the sealant 7, ensure the sealing of the product itself.

[0042] In some specific embodiments, such as Figure 4 , Figure 5 and Figure 8 As shown, an annular support plate 18 is provided on the first end face 12 of the upper shell 1 for supporting the PCBA board 3 on the upper shell 1. Specifically, the annular support plate 18 extends along a first direction towards the lower metal shell 2, and a sealing groove 17 surrounds the outer side of the annular support plate 18 to ensure that the PCBA board 3 is sealed and fixed within a relatively closed hollow cavity. Simultaneously, multiple support protrusions 19 are also provided on the end face of the annular support plate 18 near the lower metal shell 2. When the PCBA board 3 is positioned and connected to the upper shell 1, the edge of the end face of the PCBA board 3 near the upper shell 1 abuts against the multiple support protrusions 19, thereby providing support for the PCBA board 3 while ensuring a good heat dissipation environment for the PCBA board 3.

[0043] In some specific implementation processes, such as Figure 3 and Figure 4As shown, a rectangular protrusion 110 is provided in the middle of the upper shell 1, and the rectangular protrusion 110 is convex from the first end face 12 in a direction away from the second end face 13. The mounting cavity structure 11 and the annular support plate 18 are both provided inside the rectangular protrusion 110, and the annular support plate 18 and the inner side of the rectangular protrusion 110 enclose to form a sealing groove 17. Furthermore, the interface structure 14 is provided on the rectangular protrusion 110, and the interface structure 14 is convex from the end face of the rectangular protrusion 110 in a direction away from the upper shell 1. The mounting cavity structure 11 is provided inside the interface structure 14, and the mounting cavity structure 11 is a rectangular structure. Multiple strip reinforcing ribs 111 are provided between the outer surface of the mounting cavity structure 11 and the inner surface of the interface structure 14 to prevent deformation of the mounting cavity structure 11 and the interface structure 14 and improve the structural strength. It should be noted and understood that, in this application, "the cavity structure 11 is disposed within the interface structure 14" means that the cavity structure 11 is located within the interface structure 14 in the plane formed by the second direction and the third direction, while in the first direction, the portion of the cavity structure 11 away from the lower metal shell 2 extends into the interface structure 14, and the portion of the cavity structure 11 close to the lower metal shell 2 extends into the space between the annular support plates 18.

[0044] In other specific implementation processes, such as Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, a first mounting hole 112 is provided at each of the two corners of one end of the upper shell 1 along the second direction, and a second mounting hole 113 is provided at the middle of the other end of the upper shell 1 along the second direction. Each first mounting hole 112 and each second mounting hole 113 is provided with two trapezoidal reinforcing ribs 114 symmetrically arranged along their diameter direction. The two right-angled sides of each trapezoidal reinforcing rib 114 are fixedly connected to the outer surface of the rectangular protrusion 110 and the second end face 13 of the upper shell 1, respectively, thus preventing deformation through the design of the trapezoidal reinforcing ribs 114. In addition, two second positioning posts 115 are provided on the second end face 13 of the upper shell 1, and the two second positioning posts 115 are located on one side of the second mounting hole 113 and one of the first mounting holes 112, respectively. Correspondingly, the lower metal shell 2 is provided with three third mounting holes 22, and the three third mounting holes 22 are respectively set to correspond one-to-one with two first mounting holes 112 and one second mounting hole 113. The lower metal shell 2 is also provided with two second positioning holes 23, and the two second positioning holes 23 are respectively set to correspond one-to-one with two first positioning posts 15. The two second positioning posts 115 are respectively inserted into their corresponding second positioning holes 23, and the upper shell 1 and the lower metal shell 2 are positioned and installed. After the upper shell 1 and the lower metal shell 2 are connected, the three third mounting holes 22 are respectively set to correspond one-to-one with two first mounting holes 112 and one second mounting hole 113 to form three mounting interfaces for fixed connection between the light driver structure and the lamp.

[0045] Furthermore, the light driver structure also includes a sealing ring 116, which surrounds the outer side of the interface structure 14 for sealing connection between the upper housing 1 and the lamp, thereby ensuring the protection level of the entire controller when it is assembled onto the headlight through the cooperation of the sealing ring 16.

[0046] In other embodiments, such as Figure 5 , Figure 6 , Figure 7 , Figure 9 and Figure 10 As shown, at least one mounting protrusion 24 is provided on each of the four sides of the inner cavity of the lower metal shell 2. When the PCBA board 3 is positioned and installed between the upper shell 1 and the lower metal shell 2, the four corners of the PCBA board 3 are fixedly connected to the lower metal shell 2 by adhesive 8, achieving a stable connection between the PCBA board 3 and the lower metal shell 2. At this time, the PCBA board 3 is fixed to the multiple mounting protrusions 24. Furthermore, in the first direction, the height of each mounting protrusion 24 corresponds to the height of the SMT conductive particles 5, so that the PCBA board 3 fits against the multiple mounting protrusions 24 in the lower metal shell 2. By controlling the height of the mounting protrusions 24, it is ensured that each SMT conductive particle 5 has a certain amount of compression in the first direction, thereby achieving grounding performance. In addition, the heat-generating device on the PCBA board 3 is connected to the lower metal shell 2 by thermally conductive adhesive 9, thereby applying thermally conductive adhesive 9 to the heat-generating device to meet the heat dissipation requirements.

[0047] The above describes the various components of the light driver structure provided in this embodiment and their connection relationships. The following section will combine... Figure 1 – Figure 10 The assembly process of the light driver structure is described in detail.

[0048] In this embodiment, all electronic components and SMT conductive particles 5 around the board edge are soldered onto the PCBA board 3. The PCBA board 3 is positioned and installed onto the upper shell 1 via two first positioning posts 15 and first positioning holes 31, and the connector 41 of the female connector 4 is electrically connected to the PCBA board 3. Next, thermally conductive adhesive 9, adhesive 8, and sealant 7 are applied. The sealant 7 is applied to the sealing groove 17 of the upper shell 1 to ensure a seal between the upper shell 1 and the lower metal shell 2. The thermally conductive adhesive 9 can be applied to components that generate significant heat, so that after assembly, the heat-generating components contact the lower metal shell 2 through the thermally conductive adhesive 9, dissipating heat. The adhesive 8 is applied to the four corners of the PCBA board 3 to ensure a fixed connection between the PCBA board 3 and the lower metal shell 2. After applying the various types of adhesives, multiple clips 61 are respectively engaged in their corresponding slots 62 to snap the lower metal shell 2 onto the upper shell 1. Finally, the sealing ring 116 is fitted, forming a complete product.

[0049] In summary, this application discloses a light driver structure that adopts a press-fit connection scheme, integrating the female connector's housing and the upper housing into a single injection-molded unit, saving connector costs. Furthermore, the upper and lower housings use a snap-fit ​​connection, eliminating the need for screws and reducing screw costs, resulting in a simpler and lighter product while simplifying the assembly process. Simultaneously, the light driver structure ensures a tight seal through the sealant combination between the upper and lower metal housings. When the controller is assembled onto the headlight, the sealing ring ensures the controller's protection level, and thermally conductive adhesive is applied to the heat-generating components to ensure adequate heat dissipation.

[0050] Furthermore, this light driver structure incorporates soldered SMT conductive particles, which are axially compressed within the hollow cavity by the PCBA board and the lower metal shell. The PCBA board and the lower metal shell are further secured with adhesive, further tightening the bond between them. This allows signal noise from the PCBA board to be conducted to the lower metal shell through the SMT conductive particles, successfully resolving the EMC grounding issue in existing technologies and ensuring EMC functionality.

[0051] It will be understood by those skilled in the art that the accompanying drawings are merely schematic diagrams of one embodiment, and the components shown in the drawings are not necessarily essential for implementing this invention. It should also be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0052] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0053] Finally, it should be noted that the above-described embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model. These modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope described in the claims.

Claims

1. A light driver structure, characterized in that, include: Top shell, metal bottom shell, PCBA board, female connector and multiple SMT conductive particles; The upper shell and the lower metal shell are connected by a snap-fit ​​structure and sealed with sealant to form a relatively closed hollow cavity. The PCBA board is positioned within the hollow cavity. The upper shell has a mounting cavity structure that protrudes towards the lower metal shell relative to the first end face of the upper shell. The opening end of the mounting cavity structure is located on the second end face of the upper shell. The second end face of the upper shell has an interface structure that extends away from the upper shell along a first direction and surrounds the opening end of the mounting cavity structure. A female connector is disposed within the mounting cavity structure, and the connector of the female connector passes through the mounting cavity structure to one side of the first end face of the upper shell, electrically connecting to the PCBA board. Multiple SMT conductive particles are respectively disposed on the edge of the PCBA board near the end face of the lower metal shell. When the upper shell and the lower metal shell are fixedly connected, each SMT conductive particle is pressed and fixed between the PCBA board and the lower metal shell in the first direction. Wherein, the first direction is a direction perpendicular to the PCBA board.

2. The light driver structure according to claim 1, characterized in that, Two first positioning posts are provided on the end face of the mounting cavity structure near the lower metal shell, and the two first positioning posts are distributed non-mirrorically. Two first positioning holes are provided on the PCBA board, and each first positioning hole corresponds to one of the two first positioning posts. The PCBA board is positioned on the upper shell by inserting the two first positioning posts into the corresponding first positioning holes.

3. The light driver structure according to claim 1, characterized in that, The snap-fit ​​structure includes multiple snap-fit ​​blocks and multiple snap-fit ​​slots; the multiple snap-fit ​​blocks are respectively disposed at the four edges of the lower metal shell, and each snap-fit ​​block extends away from the lower metal shell on a plane constructed based on a second direction and a third direction; the upper shell is provided with snap-fit ​​plates at its four edges, and the snap-fit ​​plates extend towards the lower metal shell along the first direction; the multiple snap-fit ​​slots are respectively disposed on the snap-fit ​​plates, and each snap-fit ​​slot corresponds one-to-one with the multiple snap-fit ​​blocks; the upper shell and the lower metal shell are snap-fit ​​connected by each snap-fit ​​block being snapped into the corresponding snap-fit ​​slot. Wherein, the first direction, the second direction, and the third direction are perpendicular to each other.

4. The light driver structure according to claim 2, characterized in that, A sealing groove is provided on the first end face of the upper shell, and the sealing groove is arranged in a circumferential manner around the perimeter of the first end face of the upper shell. An annular protrusion is provided on the end face of the lower metal shell near the upper shell, and the shape and size of the annular protrusion correspond to the shape and size of the sealing groove. The sealant is disposed in the sealing groove. When the upper shell and the lower metal shell are connected by the snap-fit ​​structure, the annular protrusion is bonded to the sealing groove by the sealant.

5. The light driver structure according to claim 4, characterized in that, An annular support plate is provided on the first end face of the upper shell. The annular support plate extends along the first direction toward the metal lower shell, and the sealing groove surrounds the outer side of the annular support plate. Multiple support protrusions are provided on the end face of the annular support plate near the metal lower shell. When the PCBA board is positioned and connected to the upper shell, the edge of the end face of the PCBA board near the upper shell abuts against the multiple support protrusions.

6. The light driver structure according to claim 5, characterized in that, A rectangular protrusion is provided in the middle of the upper shell, and the rectangular protrusion is convex from the first end face in a direction away from the second end face. The mounting cavity structure and the annular support plate are both disposed in the rectangular protrusion, and the sealing groove is formed by the annular support plate and the inner side of the rectangular protrusion.

7. The light driver structure according to claim 6, characterized in that, The interface structure is disposed on the rectangular protrusion, and the interface structure is convex from the end face of the rectangular protrusion in the direction away from the upper shell. The mounting cavity structure is disposed inside the interface structure, and the mounting cavity structure is a rectangular body structure. Multiple strip reinforcing ribs are disposed between the outer surface of the mounting cavity structure and the inner surface of the interface structure.

8. The light driver structure according to claim 6, characterized in that, The upper shell has a first mounting hole at each of its two corners along one end of the second direction, and a second mounting hole at the middle of the other end of the upper shell along the second direction. Each of the first and second mounting holes has two trapezoidal reinforcing ribs symmetrically arranged along its diameter. The two right-angled sides of each trapezoidal reinforcing rib are fixedly connected to the outer surface of the rectangular protrusion and the second end face of the upper shell, respectively. Two second positioning posts are provided on the second end face of the upper shell, with each second positioning post located on one side of the second mounting hole and one of the first mounting holes. The lower metal shell has three third mounting holes. The upper shell and the lower metal shell are positioned and installed together. After the upper shell and the lower metal shell are connected, the three third mounting holes correspond one-to-one with the two first mounting holes and the one second mounting hole, forming three mounting interfaces for the fixed connection between the light driver structure and the lamp. The second direction is the direction of the long side of the PCBA board, and the first direction is perpendicular to the second direction.

9. The light driver structure according to claim 1, characterized in that, At least one mounting protrusion is provided on each of the four sides of the inner cavity of the lower metal shell. In the first direction, the height of each mounting protrusion corresponds to the height of the SMT conductive particle. When the PCBA board is positioned and installed between the upper shell and the lower metal shell, the four corners of the PCBA board are fixedly connected to the lower metal shell by adhesive. The PCBA board is abutted and fixed on multiple mounting protrusions. Each SMT conductive particle has a certain amount of compression in the first direction, and the heating device on the PCBA board is connected to the lower metal shell by thermally conductive adhesive.

10. The light driver structure according to claim 1, characterized in that, Also includes: A sealing ring; the sealing ring is disposed around the outside of the interface structure and is used for a sealing connection between the upper shell and the lamp.

Images