CN214543734U

CN214543734U - Vehicle-mounted charger

Info

Publication number: CN214543734U
Application number: CN202120830671.6U
Authority: CN
Inventors: 李纯滨; 詹盼盼
Original assignee: Shenzhen Leaderment Technology Co ltd
Current assignee: Shenzhen Leaderment Technology Co ltd
Priority date: 2021-04-21
Filing date: 2021-04-21
Publication date: 2021-10-29
Anticipated expiration: 2031-04-21

Abstract

The application relates to a vehicle-mounted charger, which comprises a front shell, a main PCB (printed circuit board), a rear cover and a type-c interface, wherein one end of the front shell is used for being electrically connected with a power supply on a vehicle, and the other end of the front shell is provided with an opening; the main PCB is fixedly arranged on the inner wall of the front shell, and one end of the main PCB extends to the opening of the front shell; the rear cover is fixedly arranged at the opening of the front shell and used for sealing the opening of the front shell; type-c interface one end is fixed to be set up and is served at main PCB board near one of preceding shell opening part, and the other end is worn to establish and is covered its characterized in that after: the LED lamp also comprises an auxiliary PCB and a lamp source, wherein the auxiliary PCB is arranged at one end of the main PCB close to the opening of the front shell, and the auxiliary PCB is parallel to the rear cover; the light source is arranged on the surface of one side of the auxiliary PCB close to the rear cover and is electrically connected with the auxiliary PCB; the rear cover is provided with a light hole for light to penetrate to the outside at the penetrating position of the type-c interface. This application has the driving at night for people are convenient for carry out the effect of charging through on-vehicle charger.

Description

Vehicle-mounted charger

Technical Field

The application relates to the field of charging technology, in particular to an on-board charger.

Background

People can drive automobiles to other remote places in daily life, and in the process, people sometimes use the vehicle-mounted charger to charge own mobile phones or electronic equipment, so that people can have enough electricity to use the mobile phones.

In the related art, the vehicle-mounted charger comprises a front shell, a main PCB (printed circuit board), a rear cover and a type-c interface, wherein the front shell is cylindrical, one end of the front shell is opened, and one end of the front shell, which is far away from the opening of the front shell, is used for being electrically connected with a power supply on a vehicle; the main PCB is fixed on the inner wall of the front shell, the length direction of the main PCB is parallel to the length direction of the front shell, and one end of the main PCB in the length direction extends to the opening of the front shell; the rear cover is fixed at the opening of the front shell and used for sealing the opening of the front shell; type-c interface one end is fixed to be set up in one of main PCB board near the front shell opening part and is served, and the other end wears to establish and covers after, then when people will charge, will be connected with the power on the car electricity with on-vehicle charger earlier, inserts the charging wire to on the type-c interface again to just can charge for electronic equipment through on-vehicle charger.

Aiming at the related technologies, the inventor thinks that the vehicle-mounted charger has the defect that people are not convenient to use the vehicle-mounted charger for charging because the environment in a vehicle is dark when the vehicle runs at night, and the position of the type-c interface is not easy to find.

SUMMERY OF THE UTILITY MODEL

In order to be convenient for charge through on-vehicle charger when driving at night, this application provides an on-vehicle charger.

The application provides a vehicle-mounted charger adopts following technical scheme:

a vehicle-mounted charger comprises a front shell, a main PCB, a rear cover and a type-c interface, wherein one end of the front shell is electrically connected with a power supply on a vehicle, and the other end of the front shell is provided with an opening; the main PCB is fixedly arranged on the inner wall of the front shell, and one end of the main PCB extends to the opening of the front shell; the rear cover is fixedly arranged at the opening of the front shell and used for sealing the opening of the front shell; type-c interface one end is fixed to be set up in one of main PCB board near preceding shell opening part and is served, and its characterized in that is covered after wearing to establish to the other end: the LED lamp also comprises an auxiliary PCB and a lamp source, wherein the auxiliary PCB is arranged at one end of the main PCB close to the opening of the front shell, and the auxiliary PCB is parallel to the rear cover; the light source is arranged on the surface of one side, close to the rear cover, of the auxiliary PCB and is electrically connected with the auxiliary PCB; the back lid is provided with the light trap that supplies light to penetrate to the outside in type-c interface wears to establish.

Through adopting above-mentioned technical scheme, when the light that the lamp source sent jets out from the light trap, because of the position that the light trap was located is the same with the position that type-c interface was located, so type-c interface just is lighted, the position of shining on the on-vehicle charger of people's accessible this moment, more conveniently finds type-c interface to also more conveniently insert the charging wire to type-c interface when night on, help people to charge through on-vehicle charger night.

Preferably, a light guide plate is arranged on the surface of one side, close to the auxiliary PCB, of the rear cover, the light guide plate comprises a sleeving part and an extending part, one end of the sleeving part is sleeved on one end, close to the light hole, of the type-c interface, and the other end of the sleeving part penetrates through the inner wall of the light hole; the extension part is fixedly sleeved on the part of the sleeving part, which is positioned on the inner side of the rear cover, and the peripheral side edge of the extension part extends to the edge of the rear cover.

Through adopting above-mentioned technical scheme, because of the setting of the portion is established including the cover to the light guide plate for the light that the lamp source sent can establish the position that the portion lights type-c interface locates more evenly through the cover, thereby more just people insert the charging wire to type-c interface on, the setting of on the other hand extension can make the lamp source send the light between back lid and the front shell transmit to the light guide plate more on, thereby utilize the light that the lamp source sent more effectively, and then make the cover establish the portion can light the position that type-c interface locates better.

Preferably, the lamp sources are arranged in a plurality of numbers, and the lamp sources are uniformly distributed on the surface of one side, close to the rear cover, of the auxiliary PCB.

By adopting the technical scheme, because the lamp source is uniformly provided with a plurality of light sources, the light received by each part of the light guide plate can be more uniform, so that the brightness of the sleeved part can be more uniform, the brightness of the type-c interface can be more uniform, and people can more accurately find the position of the type-c interface.

Preferably, the edge of the extension part close to one side surface of the auxiliary PCB board is provided with a plurality of latches, and the plurality of latches are uniformly arranged along the edge.

Through adopting above-mentioned technical scheme, because of the setting of latch for the extension is close to the photosensitive area who assists PCB board side surface and can increase, then under the condition that quantity and power of lamp source equal, more light can be accepted to the extension, then the position that type-c interface was located can be lighted better to the cover portion of establishing, thereby makes the light that the lamp source sent obtain more effectively utilizing.

Preferably, the inner ring of the sleeving part comprises an outer through hole and an inner through hole, one end of the outer through hole is communicated with one side of the rear cover, which is far away from the auxiliary PCB, and the other end of the outer through hole is close to one end, which is close to the type-c interface and is close to the light hole, of the rear cover; one end of the inner through hole is sleeved at one end, far away from the light transmission hole, of the type-c interface, the other end of the inner through hole is communicated with the outer through hole, the aperture of one end, close to the outer through hole, of the inner through hole is larger than that of one end, close to the inner through hole, of the outer through hole, and the transition position between one end, close to the outer through hole, of the type-c interface and the inner through hole and the outer through hole forms a separation block.

Through adopting above-mentioned technical scheme, when the in-process that the charging wire was extracted from which type-c interface, can make type-c interface have the trend of covering the outside removal backward, so transition department between interior through-hole and the outer through-hole separates the fender to type-c interface, can make the charging wire extract from type-c interface, and the difficult whole of type-c interface is taken out from the epitheca to help promoting the quality of charger.

Preferably, the circumferential side surface of the part of the sleeving part in the light hole is provided with an arc-shaped transition surface, one end of the arc-shaped transition surface is fixedly connected with the circumferential side surface of the sleeving part, the other end of the arc-shaped transition surface is fixedly connected with the surface of one side of the extension part close to the rear cover, and the cross-sectional area of the part of the sleeving part in the light hole close to the outer side of the rear cover is smaller than that of the end close to the inner side of the rear cover; the inner ring of the light hole is in a shape matched with the outer ring of the sleeving part.

Through adopting above-mentioned technical scheme, when the charging wire was extracted from type-c interface, because of there is the fender that separates in type-c interface and the transition department between interior through-hole and the outer through-hole, so at the in-process of extracting, the cover is established the portion and can be received the power of the outside direction of hou gai, because of the setting of arc transition face this moment, make to establish the difficult condition that has stress concentration of the junction between portion and the extension of establishing the cover, thereby make the cover establish the portion and be difficult for receiving the destruction with the junction of extension, help promoting the overall structure intensity of light guide plate.

Preferably, a part of the plurality of light sources is located in the inner ring of the extension portion circumferential side edge, and another part is located in the outer ring of the extension portion circumferential side edge.

Through adopting above-mentioned technical scheme for all sides edge of extension also can receive the light that the lamp source sent, thereby the portion can receive the light of coming from more directions of extension to the cover is established, and then makes the light that the portion was established to the cover more even, helps making the position that the portion was established to the cover shines type-c interface better.

Preferably, the auxiliary PCB board is provided with a clamping hole; the edge of the main PCB close to one end of the front shell opening is provided with a clamping portion, one end of the clamping portion is fixedly connected with the main PCB, and the other end of the clamping portion penetrates through the clamping hole.

Through adopting above-mentioned technical scheme, compare in the mode that assists PCB board and main PCB board to the plane butt, this kind of design for assist the PCB board and be difficult for taking place by a wide margin along the terminal surface that main PCB board is close to preceding shell one end and slide, thereby help promoting and assist the stability of PCB board in the front shell, and then at the in-process that the vehicle travel, assist the PCB board can more steadily transmit the electric current to the lamp source on, and then the convenience that the on-vehicle charger used when night is difficult to influence.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the front shell, the main PCB, the rear cover, the type-c interface, the auxiliary PCB and the lamp source, people can find the type-c interface conveniently through the shining position on the vehicle-mounted charger, so that people can conveniently plug the charging wire to the type-c interface at night, and people can charge through the vehicle-mounted charger at night;

2. through the arrangement mode that the light guide plate comprises the sleeving part and the extending part, on one hand, light emitted by the lamp source can illuminate the position where the type-c interface is located more uniformly through the sleeving part, so that people can insert the charging wire to the type-c interface more conveniently, and on the other hand, the light emitted by the lamp source between the rear cover and the front shell can be transmitted to the light guide plate more, so that the light emitted by the lamp source is utilized more effectively, and the sleeving part can illuminate the position where the type-c interface is located better;

3. establish the mode that sets up that the portion includes outer through-hole and interior through-hole through the cover for transition department between interior through-hole and the outer through-hole can separate the fender to type-c interface formation, then when the charging wire was extracted from type-c interface, the difficult whole of type-c interface was taken out from the epitheca, thereby helps promoting the quality of charger.

Drawings

Fig. 1 is a cross-sectional exploded view of an in-vehicle charger in an embodiment of the present application.

Fig. 2 is a cross-sectional view of the embodiment of the present application for showing a connection structure between a light guide plate and a rear cover.

Description of reference numerals: 1. a front housing; 2. a main PCB board; 21. a clamping part; 3. a rear cover; 31. a light-transmitting hole; 32. a raised block; 4. a type-c interface; 5. an auxiliary PCB board; 51. a clamping hole; 6. a light source; 7. a light guide plate; 71. a housing portion; 711. an outer through hole; 712. an inner through hole; 72. an extension portion; 721. clamping teeth; 8. an arc-shaped transition surface.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses on-vehicle charger. Referring to fig. 1, 2 and 2, the car charger includes a front case 1 and a main PCB board 2, the front case 1 is substantially in a cylinder-like shape, and specifically, one end of the front case 1 is used for electrically connecting with a power supply on a car, and the other end is opened, so that a proper space is provided in the front case 1 for installing components required by the car charger; main PCB board 2 is provided with two, and two main PCB boards 2 are parallel to each other and the interval sets up, and is specific, and main PCB board 2 is fixed on the inner wall of preceding shell 1 to the length direction of main PCB board 2 is on a parallel with the length direction of preceding shell 1, and in this embodiment, the one of them one end of main PCB board 2 length direction extends to near preceding shell 1 opening part moreover.

Referring to fig. 1, 2 and 2, the vehicle-mounted charger further includes an auxiliary PCB 5 and a rear cover 3, specifically, the auxiliary PCB 5 is disposed on one end of the main PCB 2 at the opening of the front case 1, and the auxiliary PCB 5 is perpendicular to the main PCB 2; the back lid 3 is and is unanimous shape with 1 opening part of preceding shell, it is concrete, back lid 3 is fixed at 1 opening part of preceding shell through the form of joint, and back lid 3 still covers the opening part of preceding shell 1, in this embodiment in addition, the edge of back lid 3 still integrative has protruding piece 32, wherein when back lid 3 is fixed on preceding shell 1, protruding piece 32 keeps away from the one end of back lid 3 and can support and assist PCB board 5 and be close to the lateral surface of back lid 3, make and assist PCB board 5 support tightly on the terminal surface that two main PCB boards 2 are close to 3 one end of back lid, thereby reach the mesh that makes to assist PCB board 5 fixed in preceding shell 1.

Referring to fig. 1 and fig. 2, in this embodiment, the integrated joint portion 21 that is formed with on the terminal surface that main PCB board 2 is close to 3 one ends of back cover, and offer the joint hole 51 that supplies joint portion 21 to pass on assisting PCB board 5, and joint hole 51 is provided with two, two joint holes 51 respectively with two main PCB board on 21 mutually support, the event is fixed at preceding shell 1 when back cover 3, so that protruding piece 32 will assist PCB board 5 to tightly when main PCB board 2, joint portion 21 and joint hole 51 can mutually support, make on-vehicle charger when rocking, assist PCB board 5 and be difficult for taking place by a wide margin and slide, thereby be difficult for influencing the component power supply of assisting PCB board 5 for installing on self.

Referring to fig. 1 and 2, a type-c interface 4 is fixed at one end of the main PCB 2 close to the rear cover 3, specifically, one end of the type-c interface 4 is fixed on one side surface of the main PCB 2, the other end of the type-c interface 4 penetrates through the auxiliary PCB 5, and the other end of the type-c interface is close to the inner side surface of the rear cover 3, and because there are two main PCBs 2, there are two type-c interfaces 4, and in addition, in this embodiment, two light holes 31 are formed in the rear cover 3, and the two light holes 31 correspond to positions where the two type-c interfaces 4 are located, respectively, so that people can insert charging wires into the type-c interfaces 4 from the light holes 31, and further, charging through a vehicle-mounted charger can be achieved.

Referring to fig. 1 and 2, the light source 6 is further fixed on the auxiliary PCB 5, in this embodiment, the light source 6 is an LED lamp, the light source 6 is provided with a plurality of light sources, the plurality of light sources 6 are uniformly distributed on the surface of one side of the auxiliary PCB 5 close to the rear cover 3, so that the light sources 6 can emit light at night, light emitted from the light sources 6 can be emitted from the light holes 31, and the positions of the light holes 31 are the same as the positions of the type-c interfaces 4, so that people can find the positions of the type-c interfaces 4 according to the positions emitted from the vehicle-mounted charger, and then people can charge through the vehicle-mounted charger when driving at night.

Referring to fig. 1 and 2, a light guide plate 7 made of acrylic material is welded on a surface of one side of the rear cover 3 close to the auxiliary PCB 5, and the light guide plate 7 includes two sleeving parts 71 and two extending parts 72, specifically, the two sleeving parts 71 are respectively matched with the two type-c interfaces 4, one end of the sleeving part 71 is sleeved on one end of the type-c interface 4 close to the rear cover 3, the other end is penetrated on the inner wall of the light hole 31, and the outer ring of the sleeving part 71 is abutted against the inner wall of the light hole 31; the extending portion 72 is integrally fixed to the portion of the sleeve portion 71 inside the rear cover 3, and the peripheral edge of the extending portion 72 extends toward the edge of the rear cover 3, so that the extending portion 72 integrally connects the two sleeve portions 71 together.

Referring to fig. 1 and 2, in the present embodiment, light emitted by the plurality of light sources 6 is firstly transmitted to the extension portion 72, then the light is transmitted from the extension portion 72 to the two sleeving portions 71, and then the two sleeving portions 71 are lighted, so that positions of the two type-c interfaces 4 are all lighted.

Referring to fig. 1 and 2, in the embodiment, a plurality of latches 721 are uniformly and integrally formed on the edge of the extension portion 72 close to one side surface of the auxiliary PCB 5, and the plurality of latches 721 are uniformly arranged around the edge, so that the photosensitive area of the extension portion 72 close to one side surface of the auxiliary PCB 5 can be increased, and then under the condition that the number of the light sources 6 and the power of each light source 6 are equal, the extension portion 72 can receive more light rays from the light sources 6, and finally, after the light rays are transmitted to the sheathing portion 71, the sheathing portion 71 can better illuminate the position where the type-c interface 4 is located, thereby facilitating the improvement of the utilization rate of the light rays of the light sources 6.

Referring to fig. 1 and 2, the inner ring of the sheathing part 71 includes an outer through hole 711 and an inner through hole 712, specifically, one end of the outer through hole 711 communicates with a surface of one side of the rear cover 3, which is away from the auxiliary PCB 5, the other end is close to an edge of the type-c interface 4, which is close to one end of the rear cover 3, and the shape of the outer through hole 711 is a waist circle that is consistent with the type-c interface 4; one end of the inner through hole 712 is sleeved on one end of the type-c interface 4 far away from the light transmission hole 31, the sleeved end of the inner through hole 712 of the type-c interface 4 belongs to one end of the type-c interface 4 exposed outside the main PCB 2, and the other end of the inner through hole 712 is communicated with one end of the outer through hole 711 near the type-c interface 4.

Referring to fig. 1 and 2, in the present embodiment, the aperture of the end of the inner through hole 712 close to the outer through hole 711 is larger than the aperture of the end of the outer through hole 711 close to the inner through hole 712, so that a step-like structure is formed at the transition of the inner through hole 712 and the outer through hole 711, and a barrier is formed at the transition with the edge of the type-c interface 4 close to the end of the light transmission hole 31, so that when the charging wire is pulled out from the type-c interface 4, the transition of the inner through hole 712 and the outer through hole 711 can play a certain role in blocking the type-c interface 4, so that the type-c interface 4 is not easy to be completely pulled out from the sleeve portion 71, which is helpful for improving the quality of the vehicle-mounted charger.

Referring to fig. 1 and 2, in the present embodiment, the arc-shaped transition surface 8 is integrally formed on the circumferential side surface of the portion of the sleeve portion 71 abutting against the inner wall of the light-transmitting hole 31 by rounding, specifically, one end of the arc-shaped transition surface 8 extends to the edge of the end of the light-transmitting hole 31 near the outside of the rear cover 3 and is fixedly connected to the circumferential side surface of the sleeve portion 71, one end of the arc-shaped transition surface 8 extends to one side surface of the extension portion 72 near the rear cover 3 and is fixedly connected to the extension portion 72, so that the cross-sectional area of the portion of the sleeve portion 71 in the light-transmitting hole 31 near the outside of the rear cover 3 is smaller than that of the end near the inside of the rear cover 3, and the inner ring of the light-transmitting hole 31 is integrally formed into a shape matching the outer ring of the sleeve portion 71.

Referring to fig. 1 and 2, in the present embodiment, since the transition portion between the inner through hole 712 and the outer through hole 711 forms a barrier for the type-c interface 4, when the charging line is pulled out from the type-c interface 4, the charging line applies a force to the entire light guide plate 7 through the type-c interface 4 to the outside of the rear cover 3, and since the connection portion between the sleeve portion 71 and the extension portion 72 is in an arc transition, the connection portion between the sleeve portion 71 and the extension portion 72 is not prone to stress concentration, so that the connection portion between the sleeve portion 71 and the extension portion 72 is not prone to damage, which is helpful to improve the structural strength of the light guide plate 7.

Referring to fig. 1 and 2, in the present embodiment, one part of the plurality of light sources 6 is located in the inner ring of the peripheral edge of the extending portion 72, and the position corresponding to the light source 6 is located in the area where the extending portion 72 is close to one side surface of the auxiliary PCB 5, and the other part is located in the outer ring of the peripheral edge of the extending portion 72, and the position corresponding to the light source 6 is not covered by the extending portion 72, so that the peripheral edge of the extending portion 72 can also receive the light emitted by the light source 6, and therefore, more light in different directions in the extending portion 72 is transmitted to the sleeve portion 71, and the light emitted by the sleeve portion 71 is more uniform, which is helpful for better illuminating the position where the type-c interface 4 is located.

The implementation principle of the vehicle-mounted charger in the embodiment of the application is as follows: when charging on the car, earlier with preceding shell 1 keep away from the one end of back lid 3 and the power electricity on the car and be connected, the light that light source 6 sent can transmit to extension 72 earlier this moment on, transmit to cover portion 71 from extension 72 after that to make the position that type-c interface 4 located can be lighted, then people alright according to the position of shining on the on-vehicle charger, find the position that type-c interface 4 located better, thereby make people can more accurately insert the charging wire to type-c interface 4 on, and then people use the on-vehicle charger to charge when night.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A vehicle-mounted charger comprises a front shell (1), a main PCB (printed circuit board) (2), a rear cover (3) and a type-c interface (4), wherein one end of the front shell (1) is used for being electrically connected with a power supply on a vehicle, and the other end of the front shell is provided with an opening; the main PCB (2) is fixedly arranged on the inner wall of the front shell (1), and one end of the main PCB (2) extends to the opening of the front shell (1); the rear cover (3) is fixedly arranged at the opening of the front shell (1) and is used for sealing the opening of the front shell (1); type-c interface (4) one end is fixed to be set up on main PCB board (2) is close to one end of preceding shell (1) opening part, and on rear cover (3), its characterized in that was worn to establish to the other end: the LED lamp also comprises an auxiliary PCB (5) and a lamp source (6), wherein the auxiliary PCB (5) is arranged at one end of the main PCB (2) close to the opening of the front shell (1), and the auxiliary PCB (5) is parallel to the rear cover (3); the lamp source (6) is arranged on the surface of one side, close to the rear cover (3), of the auxiliary PCB (5), and the lamp source (6) is electrically connected with the auxiliary PCB (5); rear cover (3) are provided with at type-c interface (4) department of wearing to establish and supply light to penetrate to outside light trap (31).

2. The vehicle-mounted charger according to claim 1, characterized in that: a light guide plate (7) is arranged on the surface of one side, close to the auxiliary PCB (5), of the rear cover (3), the light guide plate (7) comprises a sleeving part (71) and an extending part (72), one end of the sleeving part (71) is sleeved on one end, close to the light hole (31), of the type-c interface (4), and the other end of the sleeving part penetrates through the inner wall of the light hole (31); the extension part (72) is fixedly sleeved on the part of the sleeving part (71) positioned at the inner side of the rear cover (3), and the peripheral side edge of the extension part (72) extends towards the edge of the rear cover (3).

3. The vehicle-mounted charger according to claim 2, characterized in that: the lamp sources (6) are arranged in a plurality of numbers, and the lamp sources (6) are uniformly distributed on the surface of one side, close to the rear cover (3), of the auxiliary PCB (5).

4. The vehicle-mounted charger according to claim 2, characterized in that: the edge of the extending part (72) close to one side surface of the auxiliary PCB (5) is provided with a plurality of clamping teeth (721), and the plurality of clamping teeth (721) are uniformly arranged along the edge.

5. The vehicle-mounted charger according to claim 2, characterized in that: the inner ring of the sleeving part (71) comprises an outer through hole (711) and an inner through hole (712), one end of the outer through hole (711) is communicated with one side of the rear cover (3) far away from the auxiliary PCB (5) in the lateral direction, and the other end of the outer through hole is close to one end of the type-c interface (4) close to the light hole (31); one end of the inner through hole (712) is sleeved at one end of the type-c interface (4) far away from the light hole (31), the other end of the inner through hole is communicated with the outer through hole (711), the aperture of one end, close to the outer through hole (711), of the inner through hole (712) is larger than that of one end, close to the inner through hole (712), of the outer through hole (711), and a partition is formed at the transition position between one end, close to the outer through hole (711), of the type-c interface (4) and the inner through hole (712) and the outer through hole (711).

6. The vehicle-mounted charger according to claim 5, characterized in that: the circumferential side surface of the part of the sleeving part (71) in the light hole (31) is provided with an arc-shaped transition surface (8), one end of the arc-shaped transition surface (8) is fixedly connected with the circumferential side surface of the sleeving part (71), the other end of the arc-shaped transition surface is fixedly connected with one side surface of the extension part (72) close to the rear cover (3), and the cross-sectional area of the part of the sleeving part (71) in the light hole (31) close to the outer side end of the rear cover (3) is smaller than that of the part of the sleeving part (71) close to the inner side end of the rear cover (3); the inner ring of the light hole (31) is in a shape matched with the outer ring of the sleeving part (71).

7. The vehicle-mounted charger according to claim 3, characterized in that: one part of the plurality of the light sources (6) is positioned in the inner ring of the peripheral side edge of the extension part (72), and the other part is positioned in the outer ring of the peripheral side edge of the extension part (72).

8. The vehicle-mounted charger according to claim 1, characterized in that: the auxiliary PCB (5) is provided with a clamping hole (51); the edge of the main PCB (2) close to one end of the opening of the front shell (1) is provided with a clamping portion (21), one end of the clamping portion (21) is fixedly connected with the main PCB (2), and the other end of the clamping portion is arranged in a clamping hole (51) in a penetrating mode.