PCB board assembly, lamp and vehicle

Abstract

The utility model discloses a PCB board subassembly, lamps and lanterns and vehicle, PCB board subassembly includes: heat dissipation board, heat conduction board and PCB board, heat dissipation board heat conduction board and PCB board distribute gradually, heat conduction board is used for heat conduction between PCB board and heat dissipation board, clamping piece, clamping piece detachably connected in heat dissipation board, heat conduction board and PCB board to fix the heat dissipation board, heat conduction board and PCB board gradually opposite with each other. The utility model discloses a PCB board subassembly, through setting clamping piece detachably connected in heat dissipation board, heat conduction board and PCB board, can realize the connection fixed of heat dissipation structure and PCB board, that is, through clamping piece can realize the preassembly of heat dissipation board, heat conduction board and PCB board, and clamping connection is firm, reliable, can guarantee that heat dissipation board, heat conduction board and PCB board whole do not separate in transportation, guarantee the reliability of structural assembly, can promote the convenience of subsequent assembly, and the clamping piece can be detached before terminal assembly, realizes recycling.

Description

Technical Field

[0001] This utility model relates to the field of circuit board technology, and in particular to a PCB board assembly, a lamp having the PCB board assembly, and a vehicle having the lamp. Background Technology

[0002] As automotive lighting functions become increasingly complex, the internal thermal environment of the lamps becomes more demanding. PCBs require additional components such as heat sinks, thermally conductive adhesives, or thermal pads to meet heat dissipation needs. Typically, PCBAs (PCB board, thermally conductive adhesive or pads, and heat sinks) are supplied by PCB suppliers as sub-assemblies, and then assembled with optical components (thick-walled, reflectors) on the lighting production line. Due to insufficient adhesion of thermally conductive adhesives or pads, and their significant susceptibility to environmental factors such as temperature and humidity, a common solution to prevent separation of PCBA components during transportation is to use screws to secure them together. However, the screw-locking process increases PCBA production time, leading to higher costs. Furthermore, screws, being metal parts, do not meet current lightweight lighting requirements, and their poor recyclability results in resource waste, indicating room for improvement. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a PCB board assembly that enables the pre-assembly of a heat sink, a heat conduction plate, and a PCB board through snap-fit ​​connectors. The snap-fit ​​connection is firm and reliable, ensuring that the heat sink, heat conduction plate, and PCB board do not separate during transportation, thus guaranteeing the reliability of the structural assembly and improving the convenience of subsequent assembly. Furthermore, the snap-fit ​​connectors can be disassembled before final assembly, enabling recycling.

[0004] A PCB board assembly according to an embodiment of the present invention includes: a heat sink, a heat conduction plate, and a PCB board, wherein the heat sink, the heat conduction plate, and the PCB board are arranged sequentially, and the heat conduction plate is used for heat conduction between the PCB board and the heat sink; and a snap-fit ​​member, which is detachably connected to the heat sink, the heat conduction plate, and the PCB board to fix the heat sink, the heat conduction plate, and the PCB board in a sequentially relative manner.

[0005] According to the PCB board assembly of this utility model embodiment, a snap-fit ​​connector is provided to detachably connect the heat sink, heat conduction plate, and PCB board. This enables the heat dissipation structure to be fixedly connected to the PCB board. In other words, the snap-fit ​​connector enables the pre-assembly of the heat sink, heat conduction plate, and PCB board. The snap-fit ​​connection is firm and reliable, ensuring that the heat sink, heat conduction plate, and PCB board do not separate during transportation, thus ensuring the reliability of the structural assembly and improving the convenience of subsequent assembly. Furthermore, the snap-fit ​​connector can be disassembled before final assembly, enabling recycling.

[0006] According to some embodiments of the present invention, the PCB board assembly includes a heat sink, a heat conduction plate, and a PCB board, all of which are provided with snap-fit ​​holes. The snap-fit ​​member is sequentially inserted into the snap-fit ​​holes of the heat sink, the heat conduction plate, and the PCB board.

[0007] According to some embodiments of the present invention, the PCB board assembly includes a limiting part, a through part, and a snap-fit ​​part connected in sequence. The through part passes through the snap-fit ​​through hole, the limiting part limits and presses against one of the heat sink and the PCB board, and the snap-fit ​​part limits and presses against the other of the heat sink and the PCB board.

[0008] According to some embodiments of the present invention, in the PCB board assembly, the limiting part is constructed as a circular limiting plate, the outer diameter of which is larger than the diameter of the snap-fit ​​through hole; and / or, the snap-fit ​​part is constructed with an anti-detachment protrusion, the anti-detachment protrusion forming an insertion guide surface and an anti-detachment stop surface, the snap-fit ​​part being adapted to pass through the snap-fit ​​through hole along the insertion guide surface, and the anti-detachment stop surface limiting and pressing against the other of the heat sink and the PCB board.

[0009] According to some embodiments of the present invention, in the PCB board assembly, there are multiple snap-fit ​​components, and the multiple snap-fit ​​components are spaced apart and used to jointly snap-fit ​​and fix the heat sink, the heat conduction plate and the PCB board.

[0010] According to some embodiments of the present invention, the PCB board assembly further includes a mounting plate, wherein the heat sink, the heat conduction plate and the PCB board are all detachably connected to the mounting plate via connectors.

[0011] According to some embodiments of the present invention, the PCB board assembly has mounting holes on the mounting plate, and the heat sink, the heat conduction plate and the PCB board have connecting through holes. The connector passes through the connecting through holes and is threadedly engaged with the mounting holes.

[0012] According to some embodiments of the present invention, the PCB board assembly, the mounting plate is further provided with a positioning part, and the heat sink, the heat conduction plate and the PCB board are all provided with positioning holes. The positioning part is positioned and engaged with the positioning holes of the heat sink, the heat conduction plate and the PCB board in sequence.

[0013] This utility model also proposes a lamp.

[0014] The lighting fixture according to the present invention includes the PCB board assembly of any of the above embodiments.

[0015] This utility model also proposes a vehicle.

[0016] The vehicle according to the present invention includes the PCB board assembly of any of the above embodiments, or includes the lamps of the above embodiments.

[0017] The vehicle and the aforementioned lighting fixtures and PCB board assemblies have the same advantages over existing technologies, which will not be repeated here.

[0018] Additional aspects and advantages of this invention will be set forth in the description which follows, and will become apparent from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is an exploded view of a PCB board assembly according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of partial assembly steps of a PCB board assembly according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of a partial disassembly step of a PCB board assembly according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the assembly steps of a PCB board assembly according to an embodiment of the present utility model; Figure 5 This is a structural schematic diagram of a PCB board assembly according to an embodiment of the present utility model; Figure 6 This is a cross-sectional view of a PCB board assembly according to an embodiment of the present utility model.

[0020] Figure label: PCB board assembly 100, 1. Snap-fit ​​part, 11. Limiting part, 12. Through part, 13. Snap-fit ​​part, 131. Anti-detachment protrusion, 132. Through-feed guide surface, 133. Anti-detachment stop surface, 2. Heat sink, 21. Snap-fit ​​through-feed hole, 22. Connection through-feed hole, 23. Positioning hole, 3. Heat conduction plate, 4. PCB board, 5. Mounting plate, 51. Mounting hole, 52. Positioning part, 6. Connector. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 a connection within 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.

[0023] Unless otherwise specified, the front-back direction in this application refers to the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction refers to the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction refers to the vertical direction of the vehicle, i.e., the Z direction.

[0024] The following is for reference. Figures 1-6According to the PCB board assembly 100 of this utility model embodiment, the heat sink 2, heat conduction plate 3 and PCB board 4 can be pre-assembled by the snap-fit ​​1. The snap-fit ​​connection is firm and reliable, which can ensure that the heat sink 2, heat conduction plate 3 and PCB board 4 do not separate during transportation, ensuring the reliability of the structural assembly, improving the convenience of subsequent assembly, and the snap-fit ​​1 can be disassembled before final assembly to achieve recycling.

[0025] like Figures 1-6 As shown, the PCB board assembly 100 according to an embodiment of the present utility model includes: a heat sink 2, a heat conduction plate 3, a PCB board 4, and a snap-fit ​​component 1.

[0026] Heat sink 2, heat conduction plate 3 and PCB board 4 are arranged in sequence. Heat conduction plate 3 is used to conduct heat between PCB board 4 and heat sink 2. The snap-fit ​​1 is detachably connected to heat sink 2, heat conduction plate 3 and PCB board 4 to fix heat sink 2, heat conduction plate 3 and PCB board 4 in sequence relative to each other.

[0027] Specifically, PCB board 4 is the core component of PCB board assembly 100. PCB board 4, also known as a printed circuit board, is an indispensable core component in electronic devices. PCBs can electrically connect the pins of electronic components (such as chips, resistors, capacitors, etc.) through copper foil traces (conductive paths) to form a complete circuit. Furthermore, PCBs provide physical support for electronic components, preventing them from falling off or being damaged due to vibration or impact, thus integrating scattered electronic components into a fully functional system. In this way, PCB board 4 can realize signal transmission between electronic devices or electronic components and can control the operating state of electronic devices and electronic components.

[0028] The PCB assembly 100 also includes a heat sink 2 and a heat-conducting plate 3. The heat-conducting plate 3 transfers heat, while the heat sink 2 dissipates heat. The heat sink 2, heat-conducting plate 3, and PCB 4 are sequentially distributed, allowing the heat-conducting plate 3 to be close to the PCB 4 and positioned between the heat sink 2 and the PCB 4. The heat-conducting plate 3 facilitates heat conduction between the PCB 4 and the heat sink 2, enabling heat transfer between them. In practical applications, the PCB 4 generates heat during operation, which is transferred to the heat-conducting plate 3. The heat-conducting plate 3 then transfers the heat to the heat sink 2 for dissipation, thus cooling the PCB 4 and preventing it from overheating, improving the stability and safety of its operation. In this way, the heat-conducting plate 3 improves the thermal conductivity of the PCB 4, thereby enhancing its heat dissipation efficiency and effectively reducing heat accumulation.

[0029] Furthermore, the heat-conducting plate 3 can be made of a heat-conducting material, and it can be constructed as a heat-conducting pad, heat-conducting adhesive, etc. The heat sink 2 can be made of aluminum, and it can be constructed as a heat-dissipating aluminum plate, etc.

[0030] Meanwhile, the PCB board assembly 100 also includes a snap-fit ​​component 1, which has a connecting function. The snap-fit ​​component 1 is detachably connected to the heat sink 2, the heat conduction plate 3, and the PCB board 4. That is, the heat sink 2, the heat conduction plate 3, and the PCB board 4 can be snapped together sequentially through the snap-fit ​​component 1, so as to fix the heat sink 2, the heat conduction plate 3, and the PCB board 4 in a sequential relative manner, so that the heat sink 2, the heat conduction plate 3, and the PCB board 4 can be connected as a whole. This facilitates the handling of the heat sink 2, the heat conduction plate 3, and the PCB board 4.

[0031] In practical applications, such as Figure 2 As shown, the heat sink 2, heat conduction plate 3, and PCB board 4 are stacked sequentially, and then the snap-fit ​​component 1 is snapped onto the heat sink 2, heat conduction plate 3, and PCB board 4 sequentially, so that the heat sink 2, heat conduction plate 3, and PCB board 4 are relatively fixed and form a whole, which facilitates the manufacturer to supply it to other manufacturers in the form of sub-assemblies for further assembly. And as... Figure 3 As shown, during the subsequent assembly process, the snap-fit ​​component 1 can be removed relative to the heat sink 2, the heat conduction plate 3, and the PCB board 4, and then the heat sink 2, the heat conduction plate 3, and the PCB board 4 can be installed with other structures.

[0032] In this way, the heat sink 2, heat conduction plate 3 and PCB board 4 can be detachably fixed by the snap-fit ​​1, which can not only connect the heat sink 2, heat conduction plate 3 and PCB board 4, but also allow the snap-fit ​​1 to be detached from the heat sink 2, heat conduction plate 3 and PCB board 4, reducing interference between the snap-fit ​​1 and other structures, ensuring the convenience of subsequent assembly, and the snap-fit ​​connection is firm, simple to connect, easy to disassemble and assemble, with good assembly effect and wide range of applications.

[0033] The snap-fit ​​component 1 can be made of plastic, which gives it a certain degree of elasticity. This allows the snap-fit ​​component 1 to snap the heat sink 2, heat conduction plate 3, and PCB board 4 together in sequence. Typically, the PCB board 4, thermal conductive adhesive or thermal pad, and heat sink aluminum sheet are supplied by the PCB supplier in the form of sub-assemblies, and are assembled with optical components (thick-walled, reflector) on the lighting production line. Due to insufficient adhesion of thermally conductive adhesives or pads, and their significant susceptibility to environmental factors such as temperature and humidity, a common solution to prevent separation of the PCB board 4, thermally conductive adhesives or pads, and heat sink aluminum fins during transportation is to use screws to fix them together. However, the screw tightening process increases the production cycle time of the PCB board assembly 100, leading to increased costs. Furthermore, screws, being metal parts, do not meet the current requirements for lightweight lighting fixtures, and long-term use of bolts can cause metal fatigue, resulting in decreased mechanical properties and poor recyclability, thus wasting resources. This application addresses this by using a snap-fit ​​connector 1 to sequentially connect the heat sink 2, heat-conducting plate 3, and PCB board 4. This shortens production time, reduces time costs, and effectively reduces the weight of the PCB board assembly 100, achieving lightweight requirements. Moreover, the plastic snap-fit ​​connector 1 has good wear resistance, high structural integrity, and is easy to recycle, saving material costs and reducing resource waste.

[0034] According to the PCB board assembly 100 of this utility model embodiment, the heat sink 2, heat conduction plate 3 and PCB board 4 are detachably connected by a snap-fit ​​1. The heat dissipation structure can be fixed to the PCB board 4. That is, the heat sink 2, heat conduction plate 3 and PCB board 4 can be pre-assembled by the snap-fit ​​1. The connection process is simple, which can improve the overall assembly efficiency, shorten the production cycle of the PCB board assembly 100, and reduce the assembly cost. Moreover, the snap-fit ​​connection is firm and reliable, which can ensure that the heat sink 2, heat conduction plate 3 and PCB board 4 do not separate during transportation, ensuring the reliability of the structural assembly and improving the convenience of subsequent assembly. Furthermore, the snap-fit ​​1 can be detached before final assembly, and the snap-fit ​​1 has a complete structure, which is convenient for recycling and improves resource utilization.

[0035] In some embodiments, the heat sink 2, the heat conduction plate 3, and the PCB board 4 are all provided with snap-fit ​​holes 21, and the snap-fit ​​component 1 is sequentially inserted into the snap-fit ​​holes 21 of the heat sink 2, the heat conduction plate 3, and the PCB board 4.

[0036] Specifically, by providing snap-fit ​​holes 21 in the heat sink 2, heat conduction plate 3, and PCB board 4 for the snap-fit ​​component 1 to pass through, and by sequentially passing the snap-fit ​​component 1 through the snap-fit ​​holes 21 in the heat sink 2, heat conduction plate 3, and PCB board 4, the heat sink 2, heat conduction plate 3, and PCB board 4 can be sequentially snapped together by the snap-fit ​​component 1. Furthermore, by passing the snap-fit ​​hole 21 in the heat sink 2, heat conduction plate 3, and PCB board 4 in one go, the connection of the heat sink 2, heat conduction plate 3, and PCB board 4 becomes simpler, more convenient, and has higher assembly efficiency.

[0037] Among them, such as Figure 1 and Figure 2 As shown, the heat sink 2, the heat conduction plate 3, and the PCB board 4 are respectively provided with snap-fit ​​through holes 21. The snap-fit ​​through holes 21 of the heat sink 2, the heat conduction plate 3, and the PCB board 4 are distributed correspondingly along the through-hole direction. The snap-fit ​​through holes 21 of each structure can be constructed as through holes, so that the snap-fit ​​component 1 can be sequentially inserted into the snap-fit ​​through holes 21 of the three structures, thereby improving the convenience of installation.

[0038] In some embodiments, the snap-fit ​​component 1 includes a limiting part 11, a through part 12, and a snap-fit ​​part 13 connected in sequence. The through part 12 passes through the snap-fit ​​through hole 21, the limiting part 11 limits and presses against one of the heat sink 2 and the PCB board 4, and the snap-fit ​​part 13 limits and presses against the other of the heat sink 2 and the PCB board 4.

[0039] Specifically, the snap-fit ​​component 1 includes a limiting part 11, a through part 12, and a snap-fit ​​part 13. The limiting part 11 has a limiting function, the through part 12 can be through, and the snap-fit ​​part 13 has a snap-fit ​​function. For example, Figure 6 As shown, the limiting part 11, the through part 12, and the snap-fit ​​part 13 are connected in sequence. That is, the through part 12 can be located between the limiting part 11 and the snap-fit ​​part 13. The through part 12 is inserted into the snap-fit ​​through hole 21, so that the limiting part 11 and the snap-fit ​​part 13 are located on both sides of the snap-fit ​​through hole 21. The limiting part 11 can limit and press against one of the heat sink 2 and the PCB board 4, so that the snap-fit ​​part 1 can be limited and pressed against one of the heat sink 2 and the PCB board 4 through the limiting part 11. The snap-fit ​​part 13 can limit and press against the other of the heat sink 2 and the PCB board 4, so that the snap-fit ​​part 1 can be limited and pressed against the other of the heat sink 2 and the PCB board 4 through the snap-fit ​​part 13. In this way, the snap-fit ​​part 1 can be snap-fitted and connected to the heat sink 2, the heat conduction plate 3, and the PCB board 4 through the limiting part 11 and the snap-fit ​​part 13, and the connection strength between them can be improved.

[0040] In the actual design, the latching part 13 can press against the heat sink 2, and the limiting part 11 can press against the PCB board 4; or, the latching part 13 can press against the PCB board 4, and the limiting part 11 can press against the heat sink 2. Both of these arrangements can achieve the limiting engagement between the latching part 1 and the heat sink 2, the heat conduction plate 3, and the PCB board 4. In other words, when the latching part 1 is inserted in different directions relative to the heat sink 2, the heat conduction plate 3, and the PCB board 4, the structures for limiting engagement between the latching part 13 and the limiting part 11 are different. That is, when the latching part 1 is inserted sequentially from the heat sink 2, the heat conduction plate 3 to the PCB board 4, the latching part 13 can be limited and pressed against the PCB board 4, and the limiting part 11 can press against the heat sink 2; conversely, when the latching part 1 is inserted sequentially from the PCB board 4, the heat conduction plate 3 to the heat sink 2, the latching part 13 can be limited and pressed against the heat sink 2, and the limiting part 11 can press against the PCB board 4.

[0041] Furthermore, the limiting part 11, the through part 12, and the snap-fit ​​part 13 can be an integral structure, which facilitates the improvement of the connection strength of the three. The snap-fit ​​part 1 can be made of plastic material, which makes the snap-fit ​​part 1 have a certain elasticity, so that the snap-fit ​​part 1 can be sequentially inserted into the snap-fit ​​through holes 21 of the heat sink 2, the heat conduction plate 3, and the PCB board 4, thereby improving the assembly convenience.

[0042] In some embodiments, the limiting part 11 is configured as a circular limiting plate, the outer diameter of which is larger than the diameter of the snap-fit ​​through hole 21.

[0043] Specifically, such as Figure 6 As shown, the outer diameter of the circular limiting plate is larger than the diameter of the snap-fit ​​through hole 21, which prevents the circular limiting plate from being inserted into the snap-fit ​​through hole 21. This allows the circular limiting plate to be limited and pressed against one of the heat sink 2 and the PCB board 4, so that the snap-fit ​​1 can be limited and engaged with one of the heat sink 2 and the PCB board 4.

[0044] The snap-fit ​​component 1 can be constructed as a circular structure. The limiting part 11 is located at one end of the snap-fit ​​component 1 and can be set as a circular limiting plate. The through part 12 can be constructed as a through shaft. The snap-fit ​​through hole 21 can be constructed as a circular hole. The outer diameter of the through shaft is smaller than the diameter of the snap-fit ​​through hole 21, so that the through shaft can pass through the snap-fit ​​through hole 21. The outer diameter of the circular limiting plate is larger than the diameter of the snap-fit ​​through hole 21, that is, the outer diameter of the circular limiting plate is larger than the outer diameter of the through shaft. In this way, after the through shaft passes through the snap-fit ​​through hole 21, the circular limiting plate can limit and press against one of the heat sink 2 and the PCB board 4 to achieve the limiting engagement between the snap-fit ​​component 1 and one of the heat sink 2 and the PCB board 4.

[0045] In other embodiments, the snap-fit ​​portion 13 is configured to have an anti-detachment protrusion 131, the anti-detachment protrusion 131 having an insertion guide surface 132 and an anti-detachment stop surface 133, the snap-fit ​​portion 13 being adapted to pass through the snap-fit ​​through hole 21 along the insertion guide surface 132, and the anti-detachment stop surface 133 being limited and pressed against the other of the heat sink 2 and the PCB board 4.

[0046] Specifically, the anti-detachment protrusion 131 has an anti-detachment function. The anti-detachment protrusion 131 has an insertion guide surface 132 and an anti-detachment stop surface 133. The insertion guide surface 132 has a guiding function, and the anti-detachment stop surface 133 can realize the anti-detachment function. During installation, the snap-fit ​​part 13 of the snap-fit ​​component 1 is inserted into the snap-fit ​​through hole 21 of the heat sink 2, the heat conduction plate 3 and the PCB board 4 in sequence along the insertion guide surface 132. The anti-detachment stop surface 133 limits and presses against the other one of the heat sink 2 and the PCB board 4. In this way, the snap-fit ​​part 13 is easily inserted into the snap-fit ​​through hole 21 by the insertion guide surface 132, and the anti-detachment stop surface 133 limits and presses against the other one of the heat sink 2 and the PCB board 4 to realize the limiting cooperation between the snap-fit ​​component 1 and the other one of the heat sink 2 and the PCB board 4.

[0047] The snap-fit ​​component 1 can be constructed as a circular structure, and the circumference of the anti-detachment protrusion 131 is constructed as a guide surface 132, such as... Figure 6 As shown, the insertion guide surface 132 is connected to the anti-detachment stop surface 133. The anti-detachment stop surface 133 is located on the side of the insertion guide surface 132 near the limiting part 11, so that after the snap-fit ​​part 13 passes through the snap-fit ​​hole 21, the anti-detachment stop surface 133 directly abuts against the other limiting part of the heat sink 2 and the PCB board 4. The insertion guide surface 132 is constructed as an inclined surface, and it is inclined towards the central axis of the anti-detachment protrusion 131 in the direction of gradually moving away from the limiting part 11. In this way, the insertion guide surface 132 can be directly pressed against the other limiting part of the heat sink 2 and the PCB board 4. The radial dimension of the guide surface 132 in the direction away from the limiting part 11 is small, which facilitates the insertion of the guide surface 132 into the snap-fit ​​hole 21, thereby realizing the guiding function of the guide surface 132. The radial dimension of the guide surface 132 in the direction close to the limiting part 11 is large, and can be larger than the inner diameter of the snap-fit ​​hole 21, which is conducive to the anti-detachment stop surface 133 being limited and pressed against the other side of the heat sink 2 and the PCB board 4, so as to realize the anti-detachment stop surface 133.

[0048] In this embodiment, the limiting part 11 is used to limit and press against the side of the heat sink 2 away from the PCB board 4, and the snap-fit ​​part 13 is used to limit and press against the side of the PCB board 4 away from the heat sink 2. That is, the limiting part 11 can be limited and cooperated with the heat sink 2 through the circular limiting plate, and the snap-fit ​​part 13 can be limited and cooperated with the PCB board 4 through the anti-disengagement stop surface 133. In this way, both ends of the snap-fit ​​part 1 have a limiting function, so as to improve the snap-fit ​​connection reliability between the snap-fit ​​part 1 and the heat sink 2, the heat conduction plate 3 and the PCB board 4, so as to reduce the phenomenon of separation between them, and thus improve the reliability of the PCB board assembly 100 during the transportation process.

[0049] In some embodiments, there are multiple snap-fit ​​pieces 1, which are spaced apart and used to jointly snap-fit ​​and fix the heat sink 2, the heat conduction plate 3 and the PCB board 4.

[0050] Specifically, the heat sink 2, heat conduction plate 3, and PCB board 4 are connected and fixed together by multiple snap-fit ​​components 1. This allows the heat sink 2, heat conduction plate 3, and PCB board 4 to be connected and fixed at multiple positions, improving the connection strength of the heat sink 2, heat conduction plate 3, and PCB board 4. It also improves the overall stress uniformity of the heat sink 2, heat conduction plate 3, and PCB board 4, thereby improving the connection flatness of the heat sink 2, heat conduction plate 3, and PCB board 4. This reduces structural damage to the heat sink 2, heat conduction plate 3, and PCB board 4 and improves the handling stability and safety of the heat sink 2, heat conduction plate 3, and PCB board 4.

[0051] Among them, there are multiple snap-fit ​​pieces 1, which can be evenly distributed. The heat sink 2, the heat conduction plate 3, and the PCB board 4 are all provided with multiple snap-fit ​​through holes 21. The heat sink 2 and the heat conduction plate 3 can be matched with the structure of the PCB board 4 respectively, so that the heat sink 2 and the heat conduction plate 3 can dissipate heat from the PCB board 4 more and faster. In actual design, the multiple snap-fit ​​through holes 21 can be evenly spaced on the PCB board 4, so that the multiple snap-fit ​​pieces 1 can snap-fit ​​and connect the heat sink 2, the heat conduction plate 3, and the PCB board 4 at multiple positions, which helps to improve the uniformity of the connection of the multiple snap-fit ​​pieces 1 to the heat sink 2, the heat conduction plate 3, and the PCB board 4.

[0052] And such as Figures 1-3 As shown, there are three snap-fit ​​pieces 1, and the heat sink 2, heat conduction plate 3 and PCB board 4 are each provided with three snap-fit ​​through holes 21. The three snap-fit ​​pieces 1 are spaced apart to snap and fix the heat sink 2, heat conduction plate 3 and PCB board 4 at three different positions.

[0053] In some embodiments, such as Figure 1 and Figure 4 As shown, the PCB board assembly 100 also includes a mounting plate 5, and the heat sink 2, heat conduction plate 3 and PCB board 4 are all detachably connected to the mounting plate 5 via connectors 6.

[0054] Specifically, the mounting plate 5 serves as the mounting base, providing mounting positions for the heat sink 2, heat conduction plate 3, and PCB board 4. The heat sink 2, heat conduction plate 3, and PCB board 4 are detachably connected to the mounting plate 5 via connectors 6, enabling the connection and fixation of the heat sink 2, heat conduction plate 3, and PCB board 4 to the mounting plate 5. The mounting plate 5 can also be connected to other structures within the vehicle to achieve the connection and fixation of the PCB board assembly 100. Furthermore, the heat sink 2, heat conduction plate 3, and PCB board 4 can be disassembled relative to the mounting plate 5 via connectors 6, allowing for disassembly and repair in case of damage or malfunction, thus improving maintenance convenience.

[0055] Among them, the connector 6 can be constructed as a connecting bolt, that is, the heat sink 2, heat conduction plate 3 and PCB board 4 can be detachably connected to the mounting plate 5 by the connecting bolt. The connection method is simple and convenient, and the connection strength is high, which can ensure the reliability of the connection between the heat sink 2, heat conduction plate 3 and PCB board 4 and the mounting plate 5.

[0056] In some embodiments, the mounting plate 5 is provided with mounting holes 51, and the heat sink 2, the heat conduction plate 3 and the PCB board 4 are all provided with connecting through holes 22. The connector 6 passes through the connecting through holes 22 and is threadedly engaged with the mounting holes 51.

[0057] Specifically, by providing connection through holes 22 in the heat sink 2, heat conduction plate 3, and PCB board 4 for the connection piece 6 to pass through, and by providing mounting holes 51 in the mounting plate 5, the connection piece 6 is sequentially threaded through the connection through holes 22 in the heat sink 2, heat conduction plate 3, and PCB board 4 and threaded into the mounting holes 51. That is, the connection piece 6 can make the heat sink 2, heat conduction plate 3, and PCB board 4 threadedly connected to the mounting plate 5. Furthermore, by having the connection piece 6 pass through the connection through holes 22 in the heat sink 2, heat conduction plate 3, and PCB board 4 at once, the connection between the heat sink 2, heat conduction plate 3, and PCB board 4 and the mounting plate 5 is simpler, more convenient, and has higher assembly efficiency.

[0058] Among them, such as Figure 1 and Figure 4 As shown, the heat sink 2, heat conduction plate 3, and PCB board 4 are respectively provided with connecting through holes 22. The connecting through holes 22 of the heat sink 2, the heat conduction plate 3, and the PCB board 4 are distributed correspondingly along the through direction. The connecting through holes 22 can be constructed as round holes, and the connecting through holes 22 can pass through along the distribution direction of the heat sink 2, heat conduction plate 3, and PCB board 4, so that the connector 6 can be sequentially inserted into the connecting through holes 22 of the three structures. The mounting hole 51 is constructed as a threaded hole, so that the connector 6 can pass through the connecting through holes 22 of the three structures and be threadedly connected to the threaded hole, thereby improving the convenience of installation.

[0059] Furthermore, the heat sink 2, heat conduction plate 3, and PCB board 4 are each provided with multiple through holes 22. These through holes 22 are evenly spaced on the PCB board 4, and the mounting plate 5 is provided with multiple mounting holes 51. The mounting holes 51 and the through holes 22 are distributed in a one-to-one correspondence, facilitating the through connection of multiple connectors 6. In this way, multiple connectors 6 can thread the heat sink 2, heat conduction plate 3, PCB board 4, and mounting plate 5 at multiple locations. After assembly, as shown... Figure 5 As shown, the heat sink 2, heat conduction plate 3, PCB board 4 and mounting plate 5 are connected by multiple connectors 6, which can improve the uniformity and reliability of the connection between the heat sink 2, heat conduction plate 3, PCB board 4 and mounting plate 5.

[0060] like Figure 1 As shown, the heat sink 2, heat conduction plate 3 and PCB board 4 are each provided with three through holes 22, and the mounting plate 5 is provided with three mounting holes 51, which can realize the threaded connection of the heat sink 2, heat conduction plate 3, PCB board 4 and mounting plate 5 at three positions.

[0061] Furthermore, the mounting plate 5 can be equipped with multiple nuts, which are used to engage with the connector 6 through thread, thereby improving the connection reliability of the heat sink 2, heat conduction plate 3, PCB board 4 and mounting plate 5.

[0062] In some embodiments, the mounting plate 5 is further provided with a positioning part 52, and the heat sink 2, the heat conduction plate 3 and the PCB board 4 are all provided with positioning holes 23. The positioning part 52 is positioned and engaged with the positioning holes 23 of the heat sink 2, the heat conduction plate 3 and the PCB board 4 in sequence.

[0063] Specifically, by providing positioning holes 23 in the heat sink 2, heat conduction plate 3, and PCB board 4, and by providing positioning parts 52 in the mounting plate 5, the positioning parts 52 are sequentially inserted into the positioning holes 23 of the heat sink 2, heat conduction plate 3, and PCB board 4. Through the positioning engagement of the positioning parts 52 and the positioning holes 23, the heat sink 2, heat conduction plate 3, and PCB board 4 can be sequentially positioned and engaged with the mounting plate 5. Furthermore, by having the positioning parts 52 pass through the positioning holes 23 of the heat sink 2, heat conduction plate 3, and PCB board 4 in one pass, the positioning of the heat sink 2, heat conduction plate 3, and PCB board 4 with the mounting plate 5 can be achieved. This makes the relative positions of the heat sink 2, heat conduction plate 3, and PCB board 4 with the mounting plate 5 more accurate, facilitating the connection and fixation of the heat sink 2, heat conduction plate 3, and PCB board 4 with the mounting plate 5 by the connector 6. Through the pre-positioned installation steps, the entire installation process is simpler, more convenient, and has higher assembly efficiency.

[0064] Among them, such as Figure 1 and Figure 4As shown, the heat sink 2, heat conduction plate 3, and PCB board 4 are respectively provided with positioning holes 23. The positioning holes 23 of the heat sink 2, the heat conduction plate 3, and the PCB board 4 are distributed correspondingly along the penetration direction. The positioning holes 23 can be constructed as round holes, and the positioning holes 23 can penetrate along the distribution direction of the heat sink 2, the heat conduction plate 3, and the PCB board 4. The positioning part 52 can be constructed as a positioning post. The positioning post can extend from the surface of the mounting plate 5 toward the PCB board 4, and the extension length of the positioning post can be set to be equal to or greater than the total thickness of the heat sink 2, the heat conduction plate 3, and the PCB board 4, so that the positioning part 52 can extend to the positioning holes 23 of the three structures in sequence, so that the three structures can be positioned and fitted with the mounting plate 5.

[0065] Furthermore, the heat sink 2, heat conduction plate 3, and PCB board 4 are each provided with multiple positioning holes 23. These positioning holes 23 can be evenly spaced apart on the PCB board 4. The mounting plate 5 is provided with multiple positioning posts, which are distributed one-to-one with the positioning holes 23, facilitating the connection of the multiple positioning posts. In this way, the mounting plate 5 is positioned and engaged with the heat sink 2, heat conduction plate 3, and PCB board 4 at multiple positions through the multiple positioning posts. This allows the multiple positioning posts to jointly position the heat sink 2, heat conduction plate 3, PCB board 4, and mounting plate 5, thereby improving the positioning accuracy of the heat sink 2, heat conduction plate 3, PCB board 4, and mounting plate 5.

[0066] like Figure 1 and Figure 4 As shown, the heat sink 2, heat conduction plate 3, and PCB board 4 are each provided with three positioning holes 23, and the mounting plate 5 is provided with three positioning posts. This allows the heat sink 2, heat conduction plate 3, PCB board 4, and mounting plate 5 to be positioned and engaged in three locations. The three positioning holes 23 are close to the three connecting through holes 22, and the three positioning posts are close to the three mounting holes 51. In this way, the mounting plate 5 is positioned and engaged with the heat sink 2, heat conduction plate 3, and PCB board 4 through the three positioning posts, which allows the positions of the three connecting through holes 22 and the three mounting holes 51 to be aligned. This reduces the steps required to align the three connecting through holes 22 and the three mounting holes 51. Thus, through the combined use of positioning and connection, the convenience and reliability of connecting the heat sink 2, heat conduction plate 3, and PCB board 4 can be improved.

[0067] This utility model also proposes a lamp.

[0068] The lighting fixture according to the present utility model includes a PCB board assembly 100 of any of the above embodiments. The PCB board assembly 100 can be applied in the lighting fixture, wherein the lighting fixture can be a vehicle light, or a turn signal, etc. When the PCB board assembly 100 is connected to the turn signal, and when the turn signal needs to be used, the PCB board 4 can control the flashing of the turn signal through the driving circuit, and can monitor the working status of the lighting fixture, etc.

[0069] The PCB board assembly 100 includes a heat sink 2, a heat conduction plate 3, and a PCB board 4. The PCB board 4 is the core component of the PCB board assembly 100. The heat sink 2, the heat conduction plate 3, and the PCB board 4 are distributed sequentially. The heat conduction plate 3 is used to conduct heat between the PCB board 4 and the heat sink 2 to dissipate heat from the PCB board 4. The PCB board assembly 100 also includes a snap-fit ​​component 1, which snaps the heat sink 2, the heat conduction plate 3, and the PCB board 4 together sequentially. The PCB board assembly 100 also includes a mounting plate 5, which can be configured as a rotating rear wall. The snap-fit ​​component 1 can be removed from the heat sink 2, the heat conduction plate 3, and the PCB board 4. The heat sink 2, the heat conduction plate 3, and the PCB board 4 can then be detachably connected to the rotating rear wall via a connector 6. The rotating rear wall can also be connected to the lamp housing and other optical structures of the lamp, thus achieving the connection and fixation between the PCB board assembly 100 and the lamp.

[0070] Furthermore, the snap-fit ​​component 1 is detachably connected to the heat sink 2, the heat conduction plate 3, and the PCB board 4, enabling the heat dissipation structure to be fixed to the PCB board 4. That is, the pre-assembly of the heat sink 2, the heat conduction plate 3, and the PCB board 4 can be achieved through the snap-fit ​​component 1. The connection process is simple and can improve the overall assembly efficiency. The snap-fit ​​connection is firm and reliable, ensuring that the heat sink 2, the heat conduction plate 3, and the PCB board 4 do not separate during transportation, ensuring the reliability of the structural assembly, and improving the convenience of subsequent assembly. Moreover, the snap-fit ​​component 1 can be detached before final assembly, and the snap-fit ​​component 1 has a complete structure, which facilitates recycling, improves resource utilization, and thus improves the convenience of the final assembly of the lighting fixture structure.

[0071] This utility model also proposes a vehicle.

[0072] The vehicle according to the present utility model includes the PCB board assembly 100 of any of the above embodiments, or includes the lamps of the above embodiments. Specifically, the PCB board assembly 100 can be disposed in the vehicle for controlling and monitoring the structure in the vehicle, or the lamps including the PCB board assembly 100 can also be disposed in the vehicle for controlling and monitoring the lamps in the vehicle.

[0073] The PCB assembly 100 includes a heat sink 2, a heat conduction plate 3, a PCB board 4, and a snap-fit ​​component 1. The snap-fit ​​component 1 is detachably connected to the heat sink 2, the heat conduction plate 3, and the PCB board 4, enabling the heat dissipation structure to be fixed to the PCB board 4. In other words, the pre-assembly of the heat sink 2, the heat conduction plate 3, and the PCB board 4 can be achieved through the snap-fit ​​component 1. The connection process is simple, which can improve the overall assembly efficiency. The snap-fit ​​connection is firm and reliable, and can ensure that the heat sink 2, the heat conduction plate 3, and the PCB board 4 do not separate during transportation, ensuring the reliability of the structural assembly and improving the convenience of subsequent assembly. Furthermore, the snap-fit ​​component 1 can be detached before final assembly, and the snap-fit ​​component 1 has a complete structure, which facilitates recycling and improves resource utilization.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0075] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A PCB board assembly, characterized in that, include: A heat sink, a heat conduction plate, and a PCB board are provided, wherein the heat sink, the heat conduction plate, and the PCB board are arranged in sequence, and the heat conduction plate is used to conduct heat between the PCB board and the heat sink; A snap-fit ​​connector is detachably connected to the heat sink, the heat conduction plate, and the PCB board to fix the heat sink, the heat conduction plate, and the PCB board in sequence relative to each other.

2. The PCB board assembly according to claim 1, characterized in that, The heat sink, the heat conduction plate, and the PCB board are all provided with snap-fit ​​holes, and the snap-fit ​​components are sequentially inserted into the snap-fit ​​holes of the heat sink, the heat conduction plate, and the PCB board.

3. The PCB board assembly according to claim 2, characterized in that, The snap-fit ​​component includes a limiting part, a through part, and a snap-fit ​​part connected in sequence. The through part passes through the snap-fit ​​through hole. The limiting part limits and presses against one of the heat sink and the PCB board. The snap-fit ​​part limits and presses against the other of the heat sink and the PCB board.

4. The PCB board assembly according to claim 3, characterized in that, The limiting part is constructed as a circular limiting plate, and the outer diameter of the circular limiting plate is larger than the diameter of the snap-fit ​​through hole; And / or, the snap-fit ​​portion is configured to have an anti-detachment protrusion, the anti-detachment protrusion having an insertion guide surface and an anti-detachment stop surface, the snap-fit ​​portion being adapted to pass through the snap-fit ​​through hole along the insertion guide surface, and the anti-detachment stop surface limiting and pressing against the other of the heat sink and the PCB board.

5. The PCB board assembly according to claim 1, characterized in that, There are multiple snap-fit ​​components, which are spaced apart and used to jointly snap and fix the heat sink, the heat conduction plate and the PCB board.

6. The PCB board assembly according to any one of claims 1-5, characterized in that, It also includes a mounting plate, and the heat sink, the heat conduction plate and the PCB board are all detachably connected to the mounting plate via connectors.

7. The PCB board assembly according to claim 6, characterized in that, The mounting plate is provided with mounting holes, and the heat sink, the heat conduction plate and the PCB board are provided with connecting through holes. The connector passes through the connecting through holes and is threadedly engaged with the mounting holes.

8. The PCB board assembly according to claim 6, characterized in that, The mounting plate is also provided with a positioning part, and the heat sink, the heat conduction plate and the PCB board are all provided with positioning holes. The positioning part is positioned and engaged with the positioning holes of the heat sink, the heat conduction plate and the PCB board in sequence.

9. A lamp, characterized in that, Includes the PCB board assembly according to any one of claims 1-8.

10. A vehicle, characterized in that, It includes the PCB board assembly according to any one of claims 1-8, or the luminaire according to claim 9.

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