Vehicle lamp and vehicle

Abstract

The vehicle lamp comprises a shell, a radiator, a light source structure and a circuit board structure, an installation cavity is formed in the shell, the radiator is a conductive piece and is arranged in the installation cavity, part of the radiator is sunken to form a containing cavity, one end of the containing cavity is opened to form an opening, and the light source structure is matched with the radiator in a heat conduction mode. The circuit board structure comprises a circuit board and a switching power supply, the circuit board covers the opening, the switching power supply is arranged in the containing cavity, and the side face, facing the radiator, of the circuit board is provided with a magnetic leakage position which surrounds the peripheral side of the switching power supply and is attached to the edge part of the opening. The part, attached to the radiator, of the flux leakage position is annular, and the width of the part in the radial direction of the opening is smaller than or equal to the radial width of the flux leakage position. Therefore, the radiator not only can play a role in radiating the light source structure, but also can play a role in electromagnetic shielding on the switching power supply, so that the radiator has multiple functions, and the miniaturization design of the automobile lamp is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of vehicle lighting technology, and in particular to a vehicle lighting and vehicle. Background Technology

[0002] As the automotive industry develops at an increasingly rapid pace, safety regulations for automotive lights are becoming more comprehensive, and customers are placing increasing demands on the electronic safety regulations of automotive lighting products. To meet customers' EMC testing requirements, shielding boxes need to be added inside the automotive lights to enclose the circuit board components. This ensures that the electromagnetic radiation from the switching power supply does not easily affect the operation of other components inside the automotive lights, and at the same time, the electromagnetic radiation from other components does not easily affect the operation of the switching power supply, thus meeting the testing requirements.

[0003] However, adding a shielding box inside the headlights makes it difficult to achieve miniaturization of the headlights, while also increasing the overall weight of the headlights and the manufacturing cost. Utility Model Content

[0004] 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 vehicle lamp and vehicle in which the heat sink can not only dissipate heat from the light source structure, but also provide electromagnetic shielding for the switching power supply, thus achieving multiple functions of the heat sink and facilitating the miniaturization design of the vehicle lamp.

[0005] According to a first aspect of the present invention, a vehicle lamp includes: a housing, a radiator, a light source structure, and a circuit board structure. The housing has a mounting cavity. The radiator is a conductive component and is disposed within the mounting cavity. A portion of the radiator is recessed to form a receiving cavity. One end of the receiving cavity is open, forming an opening. The light source structure is disposed within the mounting cavity and thermally engages with the radiator. The circuit board structure includes a circuit board and a switching power supply. The circuit board covers the opening and is electrically connected to the light source structure. The switching power supply is disposed on one side of the thickness of the circuit board and located within the receiving cavity. The side of the circuit board facing the radiator has a magnetic leakage position. The magnetic leakage position surrounds the outer periphery of the switching power supply and is attached to the edge of the opening. The portion of the magnetic leakage position that is attached to the radiator is annular, and its width in the radial direction of the opening is less than or equal to the radial width of the magnetic leakage position.

[0006] According to the embodiment of this utility model, the vehicle lamp has a switching power supply located within the recessed cavity formed by the heat sink. Simultaneously, the magnetic leakage point surrounds the outer periphery of the switching power supply and is attached to the edge of the opening. Since the heat sink is a conductive component, the edge of the opening is also conductive. Utilizing the conductivity of the edge of the opening, the magnetic leakage point is grounded, preventing the electromagnetic radiation of the switching power supply from easily affecting the operation of other components within the vehicle lamp. Conversely, the electromagnetic radiation of other components also does not easily affect the operation of the switching power supply. In other words, the heat sink provides electromagnetic shielding for the switching power supply. Furthermore, the heat sink and the light source structure are thermally coordinated, allowing the heat sink to integrate heat dissipation and electromagnetic shielding functions. This eliminates the need for additional shielding boxes within the vehicle lamp, facilitating miniaturization of the lamp design, reducing the overall weight of the lamp, and minimizing manufacturing costs.

[0007] In some embodiments, the leakage magnetic location is configured to satisfy at least one of the following conditions: the leakage magnetic location is located at the outer edge of the circuit board; the leakage magnetic location extends continuously, or the leakage magnetic location includes a plurality of leakage magnetic positions spaced around the switching power supply; the radial width of the portion of the heat sink that is in contact with the leakage magnetic location is d, 2.5mm≤d≤3mm.

[0008] In some embodiments, the circuit board structure is configured to satisfy at least one of the following conditions: the circuit board structure includes a connector disposed on the circuit board and adapted to be electrically connected to an external power source, wherein the connector and the switching power supply are respectively disposed on both sides of the thickness of the circuit board, or the connector and the switching power supply are disposed on the same side of the thickness of the circuit board and the connector is located outside the leakage magnetic position; the circuit board structure includes a socket disposed on the circuit board, the circuit board being electrically connected to a light source structure through the socket, wherein the socket and the switching power supply are respectively disposed on both sides of the thickness of the circuit board, or the socket and the switching power supply are disposed on the same side of the thickness of the circuit board and the socket is located outside the leakage magnetic position; the circuit board structure includes at least one electronic device disposed on the side of the circuit board where the switching power supply is located, and the leakage magnetic position surrounds the outer periphery of all electronic devices.

[0009] In some embodiments, the circuit board structure includes a connector and a socket, the connector and the socket are spaced apart and are both located on the side of the circuit board away from the power-off side, a through-hole is formed on the housing, the connector passes through the through-hole, the housing and the socket are spaced apart, one end of the heat sink extends beyond the corresponding end of the circuit board in the length direction of the circuit board, so that the mounting cavity has empty space at one end in the length direction of the circuit board, and the interface of the socket is oriented towards the empty space.

[0010] In some embodiments, the heat sink cooperates with the housing to define an empty space within the mounting cavity. The empty space is spaced out on the outer periphery of the receiving cavity and is offset from the circuit board in a direction perpendicular to the thickness direction of the circuit board. The connection line between the circuit board and the light source structure is located in the empty space.

[0011] In some embodiments, the heat sink includes a heat sink body and a plurality of heat sink fins. A portion of the heat sink body is recessed to form a receiving cavity. The plurality of heat sink fins are all located on the side of the heat sink body away from the circuit board, and each heat sink fin extends along the thickness direction of the circuit board. The light source structure is fitted to the heat sink on the side perpendicular to the thickness direction of the circuit board.

[0012] In some embodiments, the radiator has at least one first positioning portion, the circuit board has at least one second positioning portion, the first positioning portion and the corresponding second positioning portion are inserted into each other along the thickness direction of the circuit board and are positioned in cooperation; and / or, the vehicle light further includes a first fastener, the first fastener being detachably connected to the circuit board and the radiator.

[0013] In some embodiments, the circuit board has at least one second positioning portion, and the vehicle lamp includes a first fastener, with a magnetic leakage location surrounding the outer periphery of the second positioning portion and the first fastener.

[0014] In some embodiments, the housing includes a lamp housing and a lamp cover, which are fitted together along the thickness direction of the circuit board to define a mounting cavity. The lamp cover is disposed on the side of the heat sink away from the circuit board. The vehicle lamp also includes a second fastener and a third fastener. The second fastener is detachably connected to the circuit board and the lamp housing, and the third fastener is detachably connected to the heat sink and the lamp housing, and is offset from the circuit board in a direction perpendicular to the thickness of the circuit board. A clearance opening is formed on the heat sink, and the second fastener is adapted to pass through the clearance opening into the circuit board and the lamp housing. And / or, the vehicle lamp also includes an optical element, which includes a light guide plate fixed on the side of the heat sink adjacent to the lamp cover and disposed adjacent to the light source structure, so that the light emitted from the light source structure passes through the light guide plate and is emitted through the lamp cover.

[0015] The vehicle according to a second aspect of the present invention includes headlights according to a first aspect of the present invention.

[0016] According to the vehicle of the present utility model embodiment, by adopting the above-mentioned headlights, the headlights can achieve a miniaturized design, so that the headlights do not easily interfere with the layout of various components inside the vehicle, which is conducive to improving the space utilization of the vehicle, and also helps to reduce the weight of the vehicle and reduce the cost of the vehicle.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] 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:

[0019] Figure 1This is a schematic diagram of a vehicle headlight according to some embodiments of the present invention;

[0020] Figure 2 This is a cross-sectional view of a vehicle lamp according to some embodiments of the present utility model;

[0021] Figure 3 This is a schematic diagram of a vehicle lamp with the lamp housing removed according to some embodiments of the present utility model;

[0022] Figure 4 yes Figure 3 A schematic diagram of the circuit board structure shown;

[0023] Figure 5 yes Figure 1 An exploded view of the vehicle's headlights shown;

[0024] Figure 6 yes Figure 5 A schematic diagram of the heat sink, light source structure, and light guide plate shown;

[0025] Figure 7 yes Figure 5 Another schematic diagram of the heat sink, light source structure, and light guide plate shown;

[0026] Figure 8 yes Figure 1 Another cross-sectional view of the headlights shown;

[0027] Figure 9 This is a schematic diagram of a vehicle according to some embodiments of the present invention.

[0028] Attached reference numerals: Headlights 100, Vehicle 200

[0029] Housing 1, Mounting cavity 10, Socket 11, Empty space 12, Lamp housing 13, Lamp shade 14.

[0030] Radiator 2, Receiving cavity 20, Opening 21, Heat dissipation body 22, Heat dissipation fins 23, First positioning part 24, Clearance opening 25

[0031] Light source structure 3, first socket 30,

[0032] Circuit board structure 4, circuit board 40, switching power supply 41, leakage magnetic position 42, leakage magnetic location 43, connector 44, socket 45, electronic components 46, second positioning part 47, interface 48.

[0033] Connect line 5

[0034] First fastener 60, second fastener 61, third fastener 62

[0035] Optical element 7, light guide plate 70. Detailed Implementation

[0036] 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.

[0037] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0038] Hereinafter, with reference to the accompanying drawings, a vehicle light 100 according to a first aspect embodiment of the present invention will be described.

[0039] like Figures 1-6 As shown, the vehicle headlight 100 includes: a housing 1, a radiator 2, a light source structure 3, and a circuit board structure 4. The housing 1 has a mounting cavity 10, and the radiator 2 is disposed within the mounting cavity 10. A portion of the radiator 2 is recessed to form a receiving cavity 20, and one end of the receiving cavity 20 is open to form an opening 21. The light source structure 3 is disposed within the mounting cavity 10, and the light source structure 3 is thermally connected to the radiator 2. The circuit board structure 4 includes a circuit board 40 and a switching power supply 41. The circuit board 40 covers the opening 21, and the circuit board structure 4 is connected to the light source structure 4. The circuit 3 is electrically connected. The switching power supply 41 is located on the thickness side of the circuit board 40 and is located in the receiving cavity 20. The side of the circuit board 40 facing the heat sink 2 has a magnetic leakage position 42. The magnetic leakage position 42 surrounds the outer periphery of the switching power supply 41 and is attached to the edge of the opening 21. The part of the magnetic leakage position 42 that is attached to the heat sink 2 is annular and the width of the part of the magnetic leakage position 42 that is attached to the heat sink 2 in the radial direction of the opening 21 is less than or equal to the radial width of the magnetic leakage position 42.

[0040] As can be seen, the heat source structure 3 and the heat sink 2 work together to conduct heat, so that the heat generated by the heat source structure 3 during operation can be effectively dissipated by the heat sink 2, so that the heat source structure 3 can maintain a relatively stable operating temperature, which helps to improve the reliability of the operation of the heat source structure 3.

[0041] Furthermore, the circuit board 40 covers the opening 21, so that the switching power supply 41 is located within the receiving cavity 20 formed by the partial recess of the heat sink 2. Thus, the switching power supply 41 can operate in a relatively sealed environment. The leakage magnetic position 42 surrounds the outer periphery of the switching power supply 41 and is attached to the edge of the opening 21. Since the heat sink 2 is a conductive component, the edge of the opening 21 is also conductive. Utilizing the conductivity of the edge of the opening 21, the leakage magnetic position 42 is grounded. Therefore, the electromagnetic radiation of the switching power supply 41 can pass through the leakage magnetic position 42 to achieve electromagnetic radiation. The electromagnetic radiation from the switching power supply 41 is effectively discharged through grounding, so that the electromagnetic radiation from the switching power supply 41 does not easily affect the operation of other components inside the lamp 100. At the same time, the electromagnetic radiation from other components located outside the housing cavity 20 can also be effectively discharged through the leakage magnetic position 42, so that the electromagnetic radiation from other components located outside the housing cavity 20 does not easily affect the operation of the switching power supply 41. That is, the heat sink 2 can play an electromagnetic shielding role for the switching power supply 41, thereby improving the electromagnetic compatibility (EMC) performance of the lamp 100, so that the lamp 100 can operate stably in a complex electromagnetic environment.

[0042] For example, when the above-mentioned vehicle light 100 is used in vehicle 200, other components in vehicle 200 may generate electromagnetic radiation. This application, by placing the circuit board structure 4 inside the mounting cavity 10, can to a certain extent isolate the electromagnetic radiation generated by other components in vehicle 200 from the circuit board structure 4. Even if some electromagnetic radiation still enters the mounting cavity 10, through the magnetic leakage position 42 and the heat sink 2 being attached, the above-mentioned part of the electromagnetic radiation can be effectively discharged in a grounded manner, reducing the possibility of the switching power supply 41 being subject to electromagnetic interference, and facilitating the improvement of the electromagnetic compatibility performance of the vehicle light 100.

[0043] The circuit board 40 is electrically connected to the light source structure 3. Since the heat sink 2 can provide electromagnetic shielding for the switching power supply 41, the circuit board structure 4 can stably transmit electrical energy and / or electrical signals to the light source structure 3, making it less susceptible to interference from other components and improving the stability of the vehicle lamp 100. The magnetic leakage position 42 is annular, and the part of the magnetic leakage position 42 that is in contact with the heat sink 2 is also annular. This allows the electromagnetic radiation to be guided from all directions, providing more comprehensive coverage of the areas where electromagnetic radiation may occur and reducing the leakage of electromagnetic radiation into the surrounding space. This ensures that most of the electromagnetic radiation can be effectively discharged through the magnetic leakage position 42 and the heat sink 2 in a grounded manner, thereby improving the electromagnetic compatibility performance of the vehicle lamp 100.

[0044] Therefore, the heat sink 2 can not only dissipate heat for the light source structure 3, but also provide electromagnetic shielding for the switching power supply 41. That is, the heat sink 2 integrates heat dissipation and electromagnetic shielding functions. Compared with some technologies that add a shielding box to the car lamp to cover the switching power supply for electromagnetic shielding, the shielding box is not conducive to the miniaturization design of the car lamp, the internal space of the car lamp is tight, and it will increase the overall weight of the car lamp and increase the manufacturing cost of the car lamp. In contrast, the heat sink 2 integrates heat dissipation and electromagnetic shielding functions, realizing the multi-purpose function of the heat sink 2. The structure is simple, which can meet the customer's EMC testing requirements, reduce the overall weight of the car lamp 100, reduce the cost of the car lamp 100, and improve the problem of tight internal space of the car lamp 100, thus facilitating the miniaturization design of the car lamp 100.

[0045] Specifically, EMC testing, also known as electromagnetic compatibility (EMC) testing, refers to the comprehensive evaluation of electronic products' electromagnetic interference (EMI) magnitude and electromagnetic immunity (EMS) capability. It is one of the most important indicators of product quality. The EMC measurement system consists of a test site and test instruments. For the vehicle headlight 100 of this application, the switching power supply 41 may generate electromagnetic radiation when it is working. If this radiation exceeds a certain limit, it will interfere with other surrounding components. Therefore, this application places the switching power supply 41 in the receiving cavity 20 formed by the partial recess of the heat sink 2. The heat sink 2 can play a certain electromagnetic shielding role for the switching power supply 41, thereby limiting the electromagnetic radiation generated by the switching power supply 41 within the receiving cavity 20 and reducing its emission to the outside world. This meets the requirements for radiated emission in the EMC test. At the same time, electromagnetic interference signals generated by other external components are not easy to enter the receiving cavity 20, so that the switching power supply 41 is not easily interfered with, and the vehicle headlight 100 can work normally and meet the requirements for electromagnetic immunity in the EMC test.

[0046] It is understood that in this application, the magnetic leakage location 42 can correspond to the magnetic leakage plane of the circuit board 40.

[0047] Optionally, the radiator 2 is made of metal, such as die-cast aluminum alloy (ADC12). Die-cast aluminum alloy has good thermal conductivity, which can effectively reduce the instability of the light source structure 3 during operation. At the same time, the raw material cost of die-cast aluminum alloy is low, which makes it easier to reduce the manufacturing cost of the vehicle lamp 100. Moreover, the density of die-cast aluminum alloy is low, which has obvious lightweight advantages and makes it easier to reduce the overall weight of the vehicle lamp 100.

[0048] Optionally, the circuit board 40 includes, but is not limited to, a PCBA (Printed Circuit Board Assembly) board obtained by the entire process of mounting components on a printed circuit board (PCB) board or a blank PCB board using surface mount technology (SMT), or by using dual in-line package (DIP) technology.

[0049] like Figures 2-6 As shown, in some embodiments, the leakage magnetic field location 42 is configured to satisfy at least one of the following conditions A1 to A3:

[0050] In condition A1, the magnetic leakage position 42 is located on the outer edge of the circuit board 40 so that the magnetic leakage position 42 does not easily affect the layout of other components on the circuit board 40. At the same time, the magnetic leakage position 42 is attached to the heat sink 2 so that the components of the circuit board structure 4 located in the receiving cavity 20 are not easily affected by external electromagnetic radiation interference, so that the circuit board structure 4 can stably transmit electrical energy and / or electrical signals to the light source structure 3, which is conducive to improving the stability of the vehicle lamp 100.

[0051] In condition A2, the leakage magnetic position 42 extends continuously, for example, the leakage magnetic position 42 is a closed ring, so that the leakage magnetic position 42 can more comprehensively cover the area where electromagnetic radiation may occur, reduce the leakage of electromagnetic radiation into the surrounding space, so that most of the electromagnetic radiation can be effectively discharged through the leakage magnetic position 42 and the heat sink 2 in a grounded manner, which is conducive to improving the electromagnetic compatibility performance of the vehicle lamp 100.

[0052] For example, the magnetic leakage location 42 includes a magnetic leakage structure (e.g., the magnetic leakage structure is a metal filler) which surrounds the outer periphery of the circuit board 40 and is fixed to the circuit board 40. For example, the magnetic leakage structure is fixed to the circuit board 40 by means of thermoforming, welding and bonding, so that the magnetic leakage location 42 can more comprehensively cover the area where electromagnetic radiation may occur, which is conducive to improving the electromagnetic compatibility performance of the vehicle lamp 100.

[0053] In other embodiments of this application, the leakage magnetic position 42 includes a plurality of leakage magnetic positions 43 spaced around the switching power supply 41. That is, the plurality of leakage magnetic positions 43 are spaced apart and surround the outer periphery of the switching power supply 41, so that the plurality of leakage magnetic positions 43 can surround most of the area of ​​the switching power supply 41. The plurality of leakage magnetic positions 43 can capture and guide the electromagnetic radiation generated by the switching power supply 41 from different positions, so that the electromagnetic radiation generated by the switching power supply 41 can be effectively discharged through the leakage magnetic positions 43 and the heat sink 2 in a grounded manner. At the same time, the spaced arrangement of the plurality of leakage magnetic positions 43 can reduce the manufacturing cost of the circuit board structure 4, thereby reducing the manufacturing cost of the vehicle lamp 100.

[0054] For example, the area adjacent to the outer edge of the circuit board 40 has a plurality of spaced through holes, and the magnetic leakage position 42 includes a plurality of magnetic leakage structures. The plurality of magnetic leakage structures cooperate in the corresponding through holes to form a plurality of spaced magnetic leakage positions 43 surrounding the outer periphery of the switching power supply 41, so that the plurality of magnetic leakage positions 43 can capture and guide the electromagnetic radiation generated by the switching power supply 41 from different positions, thereby improving the electromagnetic compatibility performance of the vehicle lamp 100. At the same time, the multiple through holes are spaced apart, which will not excessively reduce the structural strength of the circuit board 40, and facilitates the improvement of the stability of the circuit board structure 4 during operation.

[0055] In condition A3, the radial width of the part of the radiator 2 that is in contact with the magnetic leakage position 42 is d, 2.5mm≤d≤3mm, that is, the radial width of the edge part of the opening 21 is d. By setting the radial width of the edge part of the opening 21 in the range of 2.5mm to 3mm, the edge part of the opening 21 has sufficient radial size. Even if there is a certain assembly error between the circuit board structure 4 and the radiator 2, the edge part of the opening 21 can still be in contact with the magnetic leakage position 42, which is conducive to improving the stability of the headlight 100. For example, d is 2.5mm, 2.6mm, 2.7mm, 2.9mm, 3mm, etc.

[0056] like Figures 2-6 As shown, in some embodiments, the circuit board structure 4 is configured to satisfy at least one of the following conditions B1 to B3:

[0057] In condition B1, the circuit board structure 4 includes a connector 44, which is located on the circuit board 40 and is suitable for electrical connection with an external power source. The connector 44 and the switching power supply 41 are respectively located on both sides of the thickness of the circuit board 40. The electromagnetic radiation generated by the switching power supply 41 can be conducted through the leakage magnetic position 42 and the heat sink 2 in a grounded manner, so that the electromagnetic radiation of the switching power supply 41 is less likely to affect the normal operation of the connector 44, which helps to improve the stability of the vehicle lamp 100 operation.

[0058] In other embodiments of this application, the connector 44 and the switching power supply 41 are located on the same side of the thickness of the circuit board 40, and the connector 44 is located outside the magnetic leakage position 42. The magnetic leakage position 42 is arranged around the outer periphery of the switching power supply 41. By placing the connector 44 outside the magnetic leakage position 42 and the switching power supply 41 inside the magnetic leakage position 42, the electromagnetic radiation generated by the switching power supply 41 can be discharged through the magnetic leakage position 42 and the heat sink 2 in a grounded manner, so that the electromagnetic radiation of the switching power supply 41 is less likely to affect the normal operation of the connector 44, which facilitates the improvement of the stability of the vehicle lamp 100 operation.

[0059] In condition B2, the circuit board structure 4 includes a socket 45, which is located on the circuit board 40. The circuit board 40 is electrically connected to the light source structure 3 through the socket 45. The socket 45 and the switching power supply 41 are respectively located on both sides of the thickness of the circuit board 40. The electromagnetic radiation generated by the switching power supply 41 can be conducted through the leakage magnetic position 42 and the heat sink 2 in a grounded manner, so that the electromagnetic radiation of the switching power supply 41 is less likely to affect the normal operation of the socket 45. The circuit board structure 4 can stably transmit electrical energy and / or electrical signals to the light source structure 3, which is conducive to improving the stability of the vehicle lamp 100 operation.

[0060] In other embodiments of this application, the socket 45 and the switching power supply 41 are located on the same side of the thickness of the circuit board 40, and the socket 45 is located outside the magnetic leakage position 42. The magnetic leakage position 42 is arranged around the outer periphery of the switching power supply 41. By placing the socket 45 outside the magnetic leakage position 42 and the switching power supply 41 inside the magnetic leakage position 42, the electromagnetic radiation generated by the switching power supply 41 can be conducted through the magnetic leakage position 42 and the heat sink 2 in a grounded manner, so that the electromagnetic radiation of the switching power supply 41 is less likely to affect the normal operation of the socket 45. The circuit board structure 4 can stably transmit electrical energy and / or electrical signals to the light source structure 3, which is conducive to improving the stability of the vehicle lamp 100 operation.

[0061] In condition B3, the circuit board structure 4 includes at least one electronic device 46. The electronic device 46 is located on the side of the circuit board 40 where the switching power supply 41 is located. Thus, the electronic device 46 and the switching power supply 41 are located on the same side in the thickness direction of the circuit board 40. The leakage magnetic position 42 surrounds the outer periphery of all electronic devices 46. That is, the leakage magnetic position 42 not only surrounds the outer periphery of the switching power supply 41, but also surrounds the outer periphery where the electronic devices 46 are located. This ensures that the switching power supply 41 and all electronic devices 46 are located in the receiving cavity 20. When other components generate electromagnetic radiation, since the switching power supply 41 and all electronic devices 46 are located inside the receiving cavity 20, the electromagnetic radiation generated by other components located outside the receiving cavity 20 is less likely to affect the normal operation of the switching power supply 41 and all electronic devices 46, thereby improving the stability of the vehicle lamp 100 operation.

[0062] like Figure 3 and Figure 5 As shown, in some embodiments, the circuit board structure 4 includes a connector 44 and a socket 45, which are spaced apart and both are located on the side of the circuit board 40 away from the power supply 41. A through-hole interface 11 is formed on the housing 1, through which the connector 44 passes. The housing 1 and the socket 45 are spaced apart. One end of the heat sink 2 extends beyond the corresponding end of the circuit board 40 along its length, so that the mounting cavity 10 has a space 12 at one end along its length. The interface 48 of the socket 45 faces the space 12, so that the interface 48 can face away from the central axis of the opening 21 (e.g., ...). Figure 5 The L1 setting in the middle.

[0063] As can be seen, the connector 44 and the socket 45 are spaced apart so that when the connector 44 is used with other components, it is not easily affected by the socket 45. At the same time, when the socket 45 is used with other components (such as the wiring 5 mentioned later), it is not easily affected by the connector 44, which helps to improve the reliability of the vehicle light 100. The connector 44 and the socket 45 are both located on the side of the circuit board 40 away from the power supply 41, so that the connector 44 and the socket 45 are not easily affected by the electromagnetic radiation of the power supply 41. At the same time, when the connector 44 and the socket 45 need to be used with other components, since the connector 44 and the socket 45 are located outside the receiving cavity 20, it is not necessary to make additional holes in the heat sink 2 or the circuit board 40 to avoid other components from using the connector 44 and the socket 45. This allows the receiving cavity 20 to remain relatively sealed, which helps to improve the electromagnetic shielding effect of the heat sink 2 on the power supply 41.

[0064] In addition, a through-hole interface 11 is formed on the housing 1, and the connector 44 passes through the interface 11. The operator can directly observe the connector 44 through the interface 11. When the headlight 100 is used in the vehicle 200, the connector 44 needs to be connected to the power supply structure of the vehicle 200. The power supply structure provides electrical energy and / or electrical signals to the headlight 100 through the connector 44. The above-mentioned interface 11 makes the assembly process of the connector 44 and the power supply structure more intuitive and facilitates the improvement of the assembly efficiency of the connector 44 and the power supply structure.

[0065] In this configuration, the housing 1 and the socket 45 are spaced apart, so the socket 45 does not need to bear the pre-tightening force required to fix the circuit board structure 4. One end of the heat sink 2 extends beyond the corresponding end of the circuit board 40 in the length direction, that is, the size of the heat sink 2 in the length direction of the circuit board 40 is larger than the size of the circuit board 40 in the length direction, so that the mounting cavity 10 has an empty space 12 at one end in the length direction of the circuit board 40. The interface 48 of the socket 45 is set facing the empty space 12. When the interface 48 is in contact with other components, the above-mentioned setting of the interface 48 allows the wiring of the interface 48 and other components to be located in the empty space 12, without the need to leave extra space on the housing 1 to avoid the interface 48 from being in contact with other components, which facilitates the improvement of the assembly efficiency of the vehicle lamp 100.

[0066] like Figure 2 , Figure 3 and Figure 5 As shown, in some embodiments, the heat sink 2 cooperates with the housing 1 to define an empty space 12 in the mounting cavity 10. The empty space 12 is spaced apart on the outer periphery of the receiving cavity 20, and the empty space 12 is offset from the circuit board 40 in a direction perpendicular to the thickness direction of the circuit board 40. The connecting line 5 connecting the circuit board 40 and the light source structure 3 is located in the empty space 12.

[0067] As can be seen, the empty space 12 and the receiving cavity 20 are spaced apart. The connection 5 between the circuit board 40 and the light source structure 3 is located in the empty space 12, so the connection 5 is less likely to come into contact with the receiving cavity 20, so that the connection 5 is less likely to interfere with the electromagnetic shielding function of the heat sink 2 on the switching power supply 41. Moreover, the empty space 12 and the circuit board 40 are staggered in the direction perpendicular to the thickness direction of the circuit board 40, so that the connection 5 is less likely to be interfered with by the circuit board 40, which facilitates the improvement of the assembly efficiency of the vehicle lamp 100. At the same time, the setting of the empty space 12 makes the wiring of the connection 5 less likely to be interfered with by the heat sink 2, the circuit board 40 and the housing 1, which facilitates the rational layout of the components inside the vehicle lamp 100.

[0068] For example, the circuit board structure 4 has a socket 45, the light source structure 3 has a first socket 30, and the connecting wire 5 is a wire harness with connectors at both ends. By inserting the connector at one end of the connecting wire 5 into the socket 45 and the connector at the other end of the connecting wire 5 into the first socket 30, the circuit board structure 4 and the light source structure 3 can be electrically connected.

[0069] like Figures 5-7 As shown, in some embodiments, the heat sink 2 includes a heat sink body 22 and a plurality of heat sink fins 23. A portion of the heat sink body 22 is recessed to form a receiving cavity 20. The plurality of heat sink fins 23 are all located on the side of the heat sink body 22 away from the circuit board 40, and each heat sink fin 23 extends along the thickness direction of the circuit board 40.

[0070] As can be seen, multiple heat dissipation fins 23 are located on the side of the heat dissipation body 22 away from the circuit board 40, so that when the circuit board 40 is assembled with the radiator 2, the circuit board 40 is less likely to interfere with the heat dissipation fins 23, which facilitates the improvement of the assembly efficiency of the vehicle lamp 100; the heat dissipation fins 23 are arranged to extend along the thickness direction of the circuit board 40, which can increase the heat exchange area of ​​the radiator 2 and improve the heat dissipation efficiency of the radiator 2.

[0071] The light source structure 3 is matched with the heat sink 2 on one side in the direction perpendicular to the thickness direction of the circuit board 40, while the circuit board 40 is set on one side of the heat sink body 22 in the thickness direction of the circuit board 40, so that the light source structure 3 and the circuit board 40 can be staggered in space, and the space inside the vehicle lamp 100 can be made more fully.

[0072] For example, the light source structure 3 can be fitted to one side of the heat sink 2 in the length direction of the circuit board 40, or the light source structure 3 can be fitted to one side of the heat sink 2 in the width direction of the circuit board 40 (e.g. Figure 3 As shown in the figure, this allows for more flexible placement of the light source structure 3, making it easier to adapt to different installation environments. For example, taking the thickness direction of the circuit board 40 as the front-to-back direction, the light source structure 3 can be placed on the upper, lower, left, or right side of the heat sink 2.

[0073] like Figures 2-8 As shown, in some embodiments, the radiator 2 has at least one first positioning part 24, and the circuit board 40 has at least one second positioning part 47. The first positioning part 24 and the corresponding second positioning part 47 are inserted and positioned along the thickness direction of the circuit board 40. The insertion direction of the first positioning part 24 and the second positioning part 47 is consistent with the assembly direction of the circuit board structure 4 and the radiator 2. By aligning the second positioning part 47 with the first positioning part 24 for insertion, the assembly positioning of the circuit board structure 4 and the radiator 2 can be achieved, which is beneficial to improving the assembly efficiency of the radiator 2 of the circuit board structure 4. And / or, the vehicle lamp 100 also includes a first fastener 60. The first fastener 60 is detachably connected to the circuit board 40 and the radiator 2. The first fastener 60 can lock the circuit board 40 and the radiator 2 to make the cooperation between the circuit board 40 and the radiator 2 more stable, which is conducive to improving the working stability of the vehicle lamp 100. At the same time, by removing the first fastener 60, the circuit board 40 and the radiator 2 can be separated, which makes the maintenance and replacement of the circuit board structure 4 and the radiator 2 more convenient.

[0074] For example, the first positioning part 24 is a positioning post, and the second positioning part 47 is a positioning hole. The positioning post and the positioning hole are inserted along the thickness direction of the circuit board 40. By aligning the positioning hole with the positioning post, the positioning of the circuit board structure 4 and the heat sink 2 can be achieved, so that the assembly of the circuit board structure 4 and the heat sink 2 is more convenient.

[0075] It is understood that there can be multiple first positioning parts 24 and second positioning parts 47, and each first positioning part 24 corresponds to one second positioning part 47, so as to make the positioning of the circuit board structure 4 and the heat sink 2 more accurate.

[0076] Optionally, the first fastener 60 is configured to allow the circuit board 40 and the heat sink 2 to be detachably mounted. For example, the first fastener 60 is a threaded fastener (such as a screw) to facilitate the installation and removal of the circuit board 40 and the heat sink 2, making subsequent maintenance and repair easier, while also making the overall structure more compact and saving space. There may be one or more first fasteners 60.

[0077] like Figure 3 As shown, in some embodiments, the circuit board 40 has at least one second positioning portion 47, and the vehicle lamp 100 includes a first fastener 60, with a magnetic leakage position 42 surrounding the outer periphery of the second positioning portion 47 and the first fastener 60.

[0078] It can be seen that by placing the second positioning part 47 and the first fastener 60 inside the magnetic leakage position 42, the space on the circuit board 40 can be made more fully. At the same time, the second positioning part 47 and the first fastener 60 are less likely to affect the fit between the magnetic leakage position 42 and the heat sink 2, which helps to improve the stability of the vehicle lamp 100.

[0079] like Figures 2-8 As shown, in some embodiments, the housing 1 includes a lamp housing 13 and a lamp shade 14, which are fitted together along the thickness direction of the circuit board 40 to jointly define the mounting cavity 10, and the lamp shade 14 is disposed on the side of the heat sink 2 away from the circuit board 40. The vehicle lamp 100 also includes a second fastener 61 and a third fastener 62. The second fastener 61 is detachably connected to the circuit board 40 and the lamp housing 13. The third fastener 62 is detachably connected to the heat sink 2 and the lamp housing 13. The third fastener 62 is offset from the circuit board 40 in a direction perpendicular to the thickness direction of the circuit board 40. The heat sink 2 has a clearance opening 25. The second fastener 61 is adapted to pass through the clearance opening 25 into the circuit board 40 and the lamp housing 13. And / or, the vehicle lamp 100 also includes an optical element 7. The optical element 7 includes a light guide plate 70 fixed on the side of the heat sink 2 adjacent to the lamp cover 14 and adjacent to the light source structure 3, so that the light emitted from the light source structure 3 passes through the light guide plate 70 and is emitted through the lamp cover 14.

[0080] A clearance opening 25 is formed on the radiator 2. The second fastener 61 can pass through the clearance opening 25 to the circuit board 40 and the lamp housing 13. When the second fastener 61 is assembled or disassembled on the circuit board 40 and the lamp housing 13, it is not easily interfered by the radiator 2, which facilitates the improvement of the assembly efficiency of the vehicle lamp 100. At the same time, the second fastener 61 can make the setting position of the circuit board 40 in the mounting cavity 10 more stable. Even if the vehicle lamp 100 is subjected to external force or impact, the circuit board structure 4 can still be maintained in the preset position, so that the circuit board structure 4 can transmit electrical energy and / or electrical signals more stably, which facilitates the improvement of the stability of the vehicle lamp 100 operation. The third fastener 62 can detachably fix the heat sink 2 and the lamp housing 13. The third fastener 62 is staggered from the circuit board 40 in the direction perpendicular to the thickness of the circuit board 40. The third fastener 62 is located outside the outer periphery of the circuit board 40, so that when the third fastener 62 is assembled or disassembled on the heat sink 2 and the lamp housing 13, it is not easily interfered with by the circuit board 40, which facilitates the improvement of the assembly efficiency of the vehicle lamp 100. At the same time, the third fastener 62 can make the setting position of the heat sink 2 in the mounting cavity 10 more stable, so that the heat sink 2 can more stably play the role of heat dissipation and electromagnetic shielding, which facilitates the improvement of the operational stability of the vehicle lamp 100.

[0081] Moreover, when assembling the vehicle lamp 100, the circuit board 40 and the heat sink 2 can be assembled into a whole in the external environment using certain components (such as the first fastener 60 mentioned above). Then, the circuit board 40 and the heat sink 2 are assembled into the lamp housing 13. The whole consisting of the circuit board 40 and the heat sink 2 is fixed to the lamp housing 13 by the second fastener 61 and the third fastener 62. Finally, the lamp cover 14 is fitted into the lamp housing 13 to complete the assembly of the vehicle lamp 100. This simplifies the assembly process of the vehicle lamp 100 and improves the assembly efficiency of the vehicle lamp 100.

[0082] Optionally, such as Figure 5 As shown, the clearance opening 25 can penetrate the cavity wall of the receiving cavity 20 on the side opposite to the opening 21, so that the clearance opening 25 communicates with the receiving cavity 20, and the second fastener 61 can be installed through the clearance opening 25 and the receiving cavity 20. In some examples, the clearance opening 25 and the receiving cavity 20 are spaced apart and are not connected.

[0083] Optionally, at least one of the second fastener 61 and the third fastener 62 is a threaded fastener.

[0084] Furthermore, the vehicle lamp 100 may include multiple second fasteners 61 and multiple third fasteners 62 to make the fit between the circuit board 40 and the lamp housing 13 more stable, and at the same time, the fit between the heat sink 2 and the lamp housing 13 is also more stable.

[0085] The light guide plate 70 is located near the light source structure 3 and is fixed to the side of the radiator 2 near the lamp cover 14. This allows light emitted from the light source structure 3 to pass through the light guide plate 70 and then be emitted through the lamp cover 14. The arrangement of the light guide plate 70 shortens the light path within it, thus improving the illumination effect of the vehicle lamp 100. Furthermore, since the circuit board 40 is located on the side of the radiator 2 away from the lamp cover 14, the arrangement of the light guide plate 70 makes it less susceptible to interference from the circuit board 40 when the light guide plate 70 is assembled onto the radiator 2, thereby improving the assembly efficiency of the vehicle lamp 100.

[0086] like Figures 2-8 As shown, in some embodiments, the first fastener 60 is detachably connected to the circuit board 40 and the heat sink 2, the second fastener 61 is detachably connected to the circuit board 40 and the lamp housing 13, and the third fastener 62 is detachably connected to the heat sink 2 and the lamp housing 13. Thus, the circuit board 40, the heat sink 2 and the lamp housing 13 can be fixed by the first fastener 60, the second fastener 61 and the third fastener 62, so that the setting position of the circuit board 40 and the heat sink 2 can be more stable. Even if the vehicle lamp 100 is subjected to impact or external force, the circuit board 40 and the heat sink 2 can still be maintained in the preset position. The heat sink 2 can play a stable electromagnetic shielding role for the electronic components on the circuit board 40, which is conducive to improving the electromagnetic compatibility performance of the vehicle lamp 100.

[0087] The vehicle 200 according to the second aspect of the present invention includes the headlights 100 according to the first aspect of the present invention.

[0088] According to the embodiment of the present utility model, the vehicle 200, by adopting the above-mentioned headlight 100, can achieve a miniaturized design, so that the headlight 100 does not easily interfere with the layout of various components inside the vehicle 200, which is conducive to improving the space utilization of the vehicle 200, and also helps to reduce the weight of the vehicle 200 and reduce the cost of the vehicle 200.

[0089] It is understood that the specific type of vehicle 200 referred to in the embodiments of this application is not limited. For example, vehicle 200 can be a fuel vehicle, a gas vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, range-extended electric vehicles, solar electric vehicles, gas fuel vehicles (such as hydrogen engine vehicles), or biofuel vehicles (such as vehicles powered by ethanol, biodiesel, etc.).

[0090] Other configurations and operations of the vehicle 200 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0091] Furthermore, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this application will not describe the various possible combinations separately. In addition, various different embodiments of this application can also be arbitrarily combined, as long as they do not violate the spirit of this application, they should also be regarded as the content disclosed in this application.

[0092] In the description of this utility model, it should be understood that the terms "center", "lateral", "length", "thickness", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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 element 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.

[0093] Furthermore, features specified as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "multiple" means two or more. It should be noted in the description of this utility model 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 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.

[0094] 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.

[0095] 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 vehicle lamp characterized by comprising: include: A housing having a mounting cavity inside; A radiator, which is a conductive component and is disposed in the mounting cavity, wherein a portion of the radiator is recessed to form a receiving cavity, and one end of the receiving cavity is open to form an opening; A light source structure is disposed within the mounting cavity and is thermally connected to the heat sink; The circuit board structure includes a circuit board and a switching power supply. The circuit board covers the opening and is electrically connected to the light source structure. The switching power supply is located on the thickness side of the circuit board and within the receiving cavity. The side of the circuit board facing the heat sink has a magnetic leakage position. The magnetic leakage position surrounds the outer periphery of the switching power supply and is attached to the edge of the opening. The portion of the magnetic leakage position that is attached to the heat sink is annular, and its radial width in the opening is less than or equal to the radial width of the magnetic leakage position.

2. The vehicle lamp of claim 1, wherein The leakage magnetic field location is configured to satisfy at least one of the following conditions: The magnetic leakage location is located at the outer edge of the circuit board; The leakage magnetic field location extends continuously, or the leakage magnetic field location includes multiple leakage magnetic positions spaced around the switching power supply. The radial width of the portion of the heat sink that is in contact with the leakage magnetic field location is d, where 2.5mm ≤ d ≤ 3mm.

3. The vehicle lamp of claim 1, wherein The circuit board structure is configured to satisfy at least one of the following conditions: The circuit board structure includes a connector, which is disposed on the circuit board and is adapted to be electrically connected to an external power source. The connector and the switching power supply are respectively disposed on both sides of the thickness of the circuit board, or the connector and the switching power supply are disposed on the same side of the thickness of the circuit board and the connector is located outside the leakage magnetic field position. The circuit board structure includes a socket, which is disposed on the circuit board. The circuit board is electrically connected to the light source structure through the socket. The socket and the switching power supply are respectively disposed on both sides of the thickness of the circuit board, or the socket and the switching power supply are disposed on the same side of the thickness of the circuit board and the socket is located outside the leakage magnetic field position. The circuit board structure includes at least one electronic device, which is located on the side of the circuit board where the switching power supply is located, and the leakage magnetic field location surrounds the outer periphery of all the electronic devices.

4. The vehicle lamp of claim 3, wherein The circuit board structure includes a connector and a socket. The connector and the socket are spaced apart and are both located on the side of the circuit board away from the switching power supply. A through-hole interface is formed on the housing. The connector passes through the interface. The housing and the socket are spaced apart. One end of the heat sink extends beyond the corresponding end of the circuit board in the length direction, so that the mounting cavity has empty space at one end in the length direction of the circuit board. The interface of the socket is oriented towards the empty space.

5. The vehicle lamp of claim 1, wherein The heat sink cooperates with the housing to define an empty space within the mounting cavity. The empty space is spaced out on the outer periphery of the receiving cavity and is offset from the circuit board in a direction perpendicular to the thickness direction of the circuit board. The connection line between the circuit board and the light source structure is located in the empty space.

6. The vehicle light according to claim 1, characterized in that, The heat sink includes a heat sink body and a plurality of heat sink fins. A portion of the heat sink body is recessed to form the receiving cavity. The plurality of heat sink fins are all located on the side of the heat sink body away from the circuit board, and each heat sink fin extends along the thickness direction of the circuit board. The light source structure is fitted to the heat sink on one side perpendicular to the thickness direction of the circuit board.

7. The vehicle light according to claim 1, characterized in that, The heat sink has at least one first positioning part, and the circuit board has at least one second positioning part. The first positioning part and the corresponding second positioning part are inserted into each other along the thickness direction of the circuit board and are positioned in a cooperative manner; and / or, The headlight also includes a first fastener, which is detachably connected to the circuit board and the heat sink.

8. The vehicle light of claim 7, wherein, The circuit board has at least one second positioning portion, and the vehicle light includes a first fastener, the magnetic leakage position surrounding the outer periphery of the second positioning portion and the first fastener.

9. The vehicle light of any one of claims 1-8, wherein, The housing includes a lamp housing and a lamp shade, which mate along the thickness direction of the circuit board to jointly define the mounting cavity. The lamp shade covers the side of the heat sink opposite to the circuit board. The vehicle headlight further includes a second fastener and a third fastener. The second fastener is detachably connected to the circuit board and the lamp housing, and the third fastener is detachably connected to the heat sink and the lamp housing, and is offset from the circuit board in a direction perpendicular to the thickness of the circuit board. The heat sink has a clearance opening, and the second fastener is adapted to pass through the clearance opening into the circuit board and the lamp housing; and / or, The vehicle headlight also includes an optical element, which includes a light guide plate fixed to the side of the radiator adjacent to the lamp cover and disposed near the light source structure, so that the light emitted from the light source structure passes through the light guide plate and is emitted through the lamp cover.

10. A vehicle characterized by comprising: Includes the vehicle lights according to any one of claims 1-9.

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