Patent Description:
With the development of economy and technologies, autonomous-driving vehicles gradually become a main development trend of the automobile industry. A millimeter-wave radar is a key part of an autonomous-driving vehicle. During actual applications, very high performance is required, and power consumption is increasing continuously. To resolve a heat dissipation problem caused by increasing power consumption, a metal structural part is usually added inside to implement heat dissipation and temperature equalization. However, if the internal metal structural part cannot be reliably and effectively contact with a circuit board, an electrostatic discharge problem occurs between the metal structural part and the circuit board, and electrostatic discharge damages an electronic device on the circuit board. To resolve the foregoing electrostatic discharge problem, a surface-mount technology may need to be introduced to mount a spring to a surface of the circuit board or clamp a structural part, such as a spring, an electrostatic discharge conductive foam, or the like to the metal structural part, so as to absorb a tolerance between the metal structural part and the circuit board and implement reliable contact between the metal structural part and the circuit board. However, this solution usually increases costs, and occupies a layout area of the circuit board, and may even cause structural strength deterioration due to introduction of the structural part. In a scenario of long-term vibration, a risk of structure damage exists.

Exemplary radar device is know from document <CIT>, wherein document <CIT> relates to electromagnetic shielding and cooling in an electronic apparatus.

This application provides an electronic apparatus that implements equipotential bonding between a metal heat dissipation member and a circuit board by integrally molding an electrical connection member on a housing through injection and has high structural strength.

According to a first aspect, this application provides an electronic apparatus. The electronic apparatus includes a housing, a metal heat dissipation member, an electrical connection member, and a circuit board. The metal heat dissipation member and the circuit board are located in the housing, the housing includes a base plate, and the metal heat dissipation member is located between the base plate and the circuit board. The circuit board includes a grounding layer and an electronic device, the electrical connection member is integrally molded into the housing through injection and is fixedly connected to the housing, one end of the electrical connection member is electrically connected to the grounding layer, and the other end of the electrical connection member is electrically connected to the metal heat dissipation member.

In a possible implementation, the electrical connection member includes a first connection sub-member, a second connection sub-member, and a third connection sub-member that are sequentially connected. The second connection sub-member is fixedly connected to the housing, one end that is of the first connection sub-member and that is away from the second connection sub-member is electrically connected to the grounding layer, and the third connection sub-member is electrically connected to the metal heat dissipation member.

In an implementation, only the second connection sub-member of the electrical connection member is directly fixedly connected to the housing. Specifically, the second connection sub-member is integrally molded into the housing through injection, to implement a fixed connection between the electrical connection member and the housing. In some implementations, the second connection sub-member and the third connection sub-member of the electrical connection member may be integrally molded into the housing through injection, but an end portion that is of the third connection sub-member and that is away from the second connection sub-member needs to be exposed, so as to be used to electrically connect to the metal heat dissipation member.

In a possible implementation, an extension direction of the first connection sub-member intersects with the circuit board, a first through-hole is disposed on the circuit board, and the first connection sub-member is inserted into the first through-hole and is connected to the first through-hole, to electrically connect to the grounding layer.

In an implementation, the extension direction of the first connection sub-member is perpendicular to the circuit board. In other words, the first connection sub-member is vertically inserted into the first through-hole of the circuit board. Within a process error range or to adapt to circuit boards of different structures and shapes and electrical connection members of different shapes, in some implementations, an included angle between the extension direction of the first connection sub-member and the circuit board may be smaller than <NUM>° or larger than <NUM>°. In an implementation, the second connection sub-member includes a first sub-portion connected to the first connection sub-member and a second sub-portion connected to the third connection sub-member. The first sub-portion intersects with the second sub-portion, the first sub-portion is parallel to the extension direction of the first connection sub-member, and the second sub-portion is parallel to an extension direction of the third connection sub-member.

In a possible implementation, the housing further includes a fastening portion, the fastening portion is configured to fixedly connect to the second connection sub-member, and at least a portion of the second connection sub-member is located in the fastening portion.

In an implementation, the housing further includes a housing body, and the fastening portion and the housing body are integrally formed. In this implementation, the electronic apparatus further includes a protective cover, the protective cover and the housing body are enclosed to form an accommodation space, and the metal heat dissipation member and the circuit board are located in the accommodation space.

In a possible implementation, the housing further includes the housing body, the housing body includes a first side wall, the fastening portion is disposed on a side that is of the base plate and that faces the circuit board, and the fastening portion is disposed adjacent to the first side wall.

In a possible implementation, the metal heat dissipation member includes a first side edge, the first side edge is disposed adjacent to the first side wall, the first side edge has a first notch, and an orthographic projection of the fastening portion on the base plate is located in an orthographic projection of the first notch on the base plate. The first connection sub-member is connected to the circuit board through the first notch, and the fastening portion abuts against the circuit board through the first notch.

In an implementation, a shape of the orthographic projection of the fastening portion on the base plate is a rectangle, and a shape of the first notch is also a rectangle. In some implementations, the shape of the orthographic projection of the fastening portion on the base plate is a rectangle, and the shape of the first notch may be a square, an ellipse, an irregular shape, or the like, provided that the fastening portion may abut against the circuit board through the first notch.

In an implementation, there are two fastening portions, two electrical connection members, and two first notches, and the two first notches are located on two sides of the first side edge. In some implementations, one of the first notches may be disposed on the first side edge, the other first notch may be disposed on a second side edge of the metal heat dissipation member, and the second side edge is adjacent to the first side edge. In some implementations, one of the first notches may be disposed on the first side edge, the other first notch may be disposed on a third side edge of the metal heat dissipation member, and the third side edge and the first side edge are disposed at an interval.

In a possible implementation, a first through hole that penetrates two opposite surfaces of the metal heat dissipation member is disposed on the metal heat dissipation member, and the orthographic projection of the fastening portion on the base plate is located in an orthographic projection of the first through hole on the base plate.

In some implementations, when there are two fastening portions and two electrical connection members, one of the fastening portions may abut against the circuit board through the first notch, and the other fastening portion may abut against the circuit board through the first through hole.

In a possible implementation, the extension direction of the third connection sub-member intersects with the metal heat dissipation member, a second through hole that penetrates the two opposite surfaces of the metal heat dissipation member is disposed on the metal heat dissipation member, and one end that is of the third connection sub-member and that is away from the second connection sub-member passes through the second through hole and is fixedly connected to the metal heat dissipation member through the second through hole.

In an implementation, the extension direction of the third connection sub-member is perpendicular to the metal heat dissipation member. Within a process error range or to adapt to metal heat dissipation members of different structures and shapes and electrical connection members of different shapes, in some implementations, an included angle between the extension direction of the third connection sub-member and the metal heat dissipation member may be smaller than <NUM>° or larger than <NUM>°.

In a possible implementation, a manner of fixed connection between the third connection sub-member and the metal heat dissipation member is one of interference fit connection, snap connection, or welding.

In a possible implementation, the extension direction of the third connection sub-member is parallel to the metal heat dissipation member, and the third connection sub-member is attached to a surface that is of the metal heat dissipation member and that faces the base plate.

In a possible implementation, a distance from a surface that is of the third connection sub-member and that is away from the base plate to the base plate is longer than a distance from a surface that is of the second sub-portion and that is away from the base plate to the base plate. In other words, compared with the second sub-portion, the third connection sub-member is protruded to the metal heat dissipation member, so that the third connection sub-member is more closely attached to the metal heat dissipation member, thereby improving electrical connectivity.

In a possible implementation, the circuit board includes a signal transmitting unit and a signal receiving unit, the signal transmitting unit is configured to transmit a signal, and the signal receiving unit is configured to receive a signal.

In a possible implementation, the electrical connection member is a fisheye pin. The fisheye pin may be solid or hollow. In this application, a shape of the first connection sub-member in the fisheye pin is not limited.

In a possible implementation, a fastening post is disposed on a surface that is of the base plate and that faces the metal heat dissipation member, a third through hole that penetrates the two opposite surfaces of the metal heat dissipation member is disposed on the metal heat dissipation member, the fastening post passes through the third through hole. After the fastening post is hot pressed, the fastening post is fastened on a surface that is of the metal heat dissipation member and that faces the circuit board.

In a possible implementation, a waterproof and breathable member is disposed on the base plate. The waterproof and breathable member is configured to enable air to flow on two sides of the base plate, so as to dissipate heat inside the housing, avoid thermal expansion and cold contraction, and maintain pressure balance inside the housing.

In a possible implementation, the electronic apparatus further includes a plurality of connecting portions. The connecting portion includes a connector and a connecting line that are connected to each other. The connector is located in the housing, a plurality of second through-holes are disposed on the circuit board, the connector is inserted into the second through-hole and is electrically connected to the second through-hole, and the connecting line passes through a third side wall and is electrically connected to an external electronic device. The connecting portion includes at least one of a voltage line, a signal transmission line, and a ground line.

In a possible implementation, a flanging portion facing the circuit board is disposed around the metal heat dissipation member. The flanging portion is configured to shield interference of an external signal to a signal in the circuit board or prevent a signal in the circuit board from being radiated. A shape of each side edge of the metal heat dissipation member is not limited, and may be specifically set according to an actual requirement.

In a possible implementation, the metal heat dissipation member includes a heat dissipation sub-member protruded toward the circuit board, thermal paste is disposed on a surface that is of the heat dissipation sub-member and that faces the circuit board, and an orthographic projection of the electronic device of the circuit board on the metal heat dissipation member at least partially overlaps with an orthographic projection of the heat dissipation sub-member on the metal heat dissipation member. Thermal paste may accelerate heat dissipation efficiency of the electronic device during working. In this implementation, the orthographic projection of the electronic device on the metal heat dissipation member completely overlaps the orthographic projection of the heat dissipation sub-member on the metal heat dissipation member, so as to improve a heat dissipation capability of the electronic device. A quantity of heat dissipation sub-members and distribution positions of the heat dissipation sub-members may be set based on a quantity of electronic devices and positions of the electronic devices on the circuit board.

According to a second aspect, this application provides a terminal device. The terminal device includes the electronic apparatus according to any one of the foregoing implementations, and the electronic apparatus is fastened to the terminal device.

In a possible implementation, the terminal device is a car, an uncrewed aerial vehicle, or a robot.

According to a third aspect, this application provides a radar, and the radar includes the electronic apparatus according to any one of the foregoing implementations.

In a possible implementation, the radar further includes a signal processing apparatus, and an information processing apparatus is electrically connected to a circuit board.

To describe technical solutions in embodiments of this application more clearly, the following describes accompanying drawings used in embodiments of this application.

The following describes technical solutions in embodiments of this application with reference to accompanying drawings in embodiments of this application. It is clearly that the described embodiments are merely some instead of all of embodiments of this application.

Terms "first", "second", and the like in this specification are merely intended for a purpose of description, and shall not be understood as an indication or implication of relative importance or implicit indication of a quantity of indicated technical features. Therefore, a feature limited by "first" or "second" may explicitly or implicitly include one or more features. In descriptions of this application, unless otherwise stated, "a plurality of" means two or more than two.

In addition, in this specification, position terms such as "top" and "bottom" are defined relative to positions of structures in the accompanying drawings. It should be understood that these position terms are relative concepts used for relative description and clarification, and may correspondingly change based on changes in the positions of the structures.

Refer to <FIG>. An embodiment of this application provides an electronic apparatus <NUM>, including a housing <NUM>, a metal heat dissipation member <NUM>, an electrical connection member <NUM>, and a circuit board <NUM>. The metal heat dissipation member <NUM> and the circuit board <NUM> are located in the housing <NUM> (as shown in <FIG>). The housing <NUM> includes a base plate <NUM>, and the metal heat dissipation member <NUM> is located between the base plate <NUM> and the circuit board <NUM>. The circuit board <NUM> includes a grounding layer <NUM> and an electronic device <NUM>. The electrical connection member <NUM> is integrally molded into the housing <NUM> through injection and is fixedly connected to the housing <NUM>, one end of the electrical connection member <NUM> is electrically connected to the grounding layer <NUM>, and the other end of the electrical connection member <NUM> is electrically connected to the metal heat dissipation member <NUM>.

The housing <NUM> is a housing having an accommodation space, and the metal heat dissipation member <NUM> and the circuit board <NUM> may be accommodated in the housing <NUM>. The circuit board <NUM> further includes a substrate, the electronic device <NUM> may be located on a surface of the substrate or may be located in the substrate. The electronic device <NUM> may be configured to implement a specific function. Specifically, the electronic device <NUM> with a specific function may be disposed in the circuit board <NUM> according to an actual requirement. The metal heat dissipation member <NUM> is configured to dissipate heat. When the circuit board <NUM> works, the electronic device <NUM> generates heat. The metal heat dissipation member <NUM> is configured to transfer heat generated by the circuit board <NUM> to the outside, so as to prevent excessively high temperature of the electronic device <NUM> from affecting working performance.

Two ends of the electrical connection member <NUM> are electrically connected to the grounding layer <NUM> and the metal heat dissipation member <NUM> respectively, so that potentials of the grounding layer <NUM> and the metal heat dissipation member <NUM> are equal. This prevents electrostatic discharge between the metal heat dissipation member <NUM> and the circuit board <NUM> from damaging the electronic device <NUM> on the circuit board <NUM>. Compared with a prior-art manner in which a structural part such as a spring or a conductive foam is mounted to a surface of the circuit board <NUM> to enable the circuit board <NUM> to be attached to the metal heat dissipation member <NUM>, so as to eliminate electrostatic discharge, a manner in which the electrical connection member <NUM> is electrically connected to the grounding layer <NUM> of the circuit board <NUM> and the metal heat dissipation member <NUM> may reduce structural part costs, may reduce occupied space in the housing <NUM>, and do not occupy a layout area of the electronic device <NUM> on the circuit board <NUM>.

Integral molding of the electrical connection member <NUM> into the housing <NUM> through injection means that when the housing <NUM> is formed, the electrical connection member <NUM> and a fused material for forming the housing <NUM> are placed into a mold for the housing <NUM>, and the housing <NUM> and the electrical connection member <NUM> are integrally molded through injection, and the electrical connection member <NUM> is fastened to the housing <NUM>. One end of the electrical connection member <NUM> is electrically connected to the grounding layer <NUM> of the circuit board <NUM>, so that the circuit board <NUM> is fastened to one end of the electrical connection member <NUM>, and then the circuit board <NUM>, the electrical connection member <NUM>, and the housing <NUM> are fastened. In addition, the metal heat dissipation member <NUM> is disposed between the base plate <NUM> and the circuit board <NUM>, and the metal heat dissipation member <NUM> may be press-fitted and fastened between the circuit board <NUM> and the base plate <NUM> by using the circuit board <NUM>, so that the circuit board <NUM> and the metal heat dissipation member <NUM> are simultaneously fastened in the housing <NUM>. Compared with the prior-art manner in which a structural part such as a spring or a conductive foam is mounted to a surface of the circuit board <NUM> to enable the circuit board <NUM> to be attached to the metal heat dissipation member <NUM>, so as to eliminate electrostatic discharge, a manner in which the electrical connection member <NUM> is integrally molded into the housing <NUM> through injection and the electrical connection member <NUM> is electrically connected to the grounding layer <NUM> of the circuit board <NUM> and the metal heat dissipation member <NUM> may enable the electronic apparatus <NUM> to have higher structural strength, enable the electronic apparatus <NUM> to have higher structure reliability in a long-term vibration scenario, and prevent the electronic apparatus <NUM> being damaged.

In the electronic apparatus <NUM> provided in this application, the electrical connection member <NUM> is integrally molded into the housing <NUM> through injection, and the electrical connection member <NUM> is electrically connected to the grounding layer <NUM> of the circuit board <NUM> and the metal heat dissipation member <NUM>. An electrostatic discharge phenomenon between the metal heat dissipation member <NUM> and the circuit board <NUM> may be eliminated, thereby preventing electrostatic discharge from damaging the electronic device <NUM> on the circuit board <NUM>. In addition, the circuit board <NUM> is fastened to the housing <NUM> by using the electrical connection member <NUM>, and the metal heat dissipation member <NUM> is fastened between the circuit board <NUM> and the base plate <NUM>, thereby improving structural strength of the electronic apparatus <NUM>.

Refer to <FIG>. In a possible implementation, the electrical connection member <NUM> includes a first connection sub-member <NUM>, a second connection sub-member <NUM>, and a third connection sub-member <NUM> that are sequentially connected. The second connection sub-member <NUM> is fixedly connected to the housing <NUM>. One end that is of the first connection sub-member <NUM> and that is away from the second connection sub-member <NUM> is electrically connected to the grounding layer <NUM> (as shown in <FIG>), and the third connection sub-member <NUM> is electrically connected to the metal heat dissipation member <NUM> (as shown in <FIG>). In this implementation, only the second connection sub-member <NUM> of the electrical connection member <NUM> is directly fixedly connected to the housing <NUM>. Specifically, the second connection sub-member <NUM> is integrally molded into the housing <NUM> through injection to implement a fixed connection between the electrical connection member <NUM> and the housing <NUM>. In some implementations, the second connection sub-member <NUM> and the third connection sub-member <NUM> of the electrical connection member <NUM> may be integrally molded into the housing <NUM> through injection, but an end portion that is of the third connection sub-member <NUM> and that is away from the second connection sub-member <NUM> needs to be exposed, so as to be used to electrically connect to the metal heat dissipation member <NUM>. In this implementation, the electrical connection member <NUM> is a fisheye pin. The fisheye pin may be solid or hollow. In this application, a shape of the first connection sub-member <NUM> in the fisheye pin is not limited.

In a possible implementation, an extension direction of the first connection sub-member <NUM> intersects with the circuit board <NUM>, a first through-hole <NUM> (as shown in <FIG> and <FIG>) is disposed on the circuit board <NUM>, and the first connection sub-member <NUM> is inserted into the first through-hole <NUM> and is connected to the first through-hole <NUM>, to electrically connect to the grounding layer <NUM>. Intersection between the extension direction of the first connection sub-member <NUM> and the circuit board <NUM> means that the extension direction of the first connection sub-member <NUM> intersects with an entire board surface of the circuit board <NUM>. In this implementation, the extension direction of the first connection sub-member <NUM> is perpendicular to the circuit board <NUM>. In other words, the first connection sub-member <NUM> is vertically inserted into the first through-hole <NUM> of the circuit board <NUM>. Within a process error range or to adapt to circuit boards <NUM> of different structures and shapes and electrical connection members <NUM> of different shapes, in some implementations, an included angle between the extension direction of the first connection sub-member <NUM> and the circuit board <NUM> may be smaller than <NUM>° or larger than <NUM>°. In this implementation, the second connection sub-member <NUM> includes a first sub-portion <NUM> connected to the first connection sub-member <NUM> and a second sub-portion <NUM> connected to the third connection sub-member <NUM> (as shown in <FIG>). The first sub-portion <NUM> intersects with the second sub-portion <NUM>, the first sub-portion <NUM> is parallel to the extension direction of the first connection sub-member <NUM>, and the second sub-portion <NUM> is parallel to an extension direction of the third connection sub-member <NUM>.

Refer to <FIG>. In a possible implementation, the housing <NUM> further includes a fastening portion <NUM>, the fastening portion <NUM> is configured to fixedly connect to the second connection sub-member <NUM>, and at least a portion of the second connection sub-member <NUM> is located in the fastening portion <NUM>. The fastening portion <NUM> may be any portion of the housing <NUM>, and the second connection sub-member <NUM> may be fastened to any position of the housing <NUM> according to an actual requirement. In this implementation, the housing <NUM> further includes a housing body <NUM> (as shown in <FIG>), and the fastening portion <NUM> and the housing body <NUM> are integrally molded. In this implementation, the electronic apparatus <NUM> further includes a protective cover <NUM>, the protective cover <NUM> and the housing body <NUM> are enclosed to form an accommodation space <NUM>, and the metal heat dissipation member <NUM> and the circuit board <NUM> are located in the accommodation space <NUM>. The fastening portion <NUM> is configured to fixedly connect to the second connection sub-member <NUM>. When the electrical connection member <NUM> and the housing <NUM> are integrally molded through injection, an injection mold of the housing <NUM> may be disposed as a shape of the fastening portion <NUM> according to a requirement, and the second connection sub-member <NUM> of the electrical connection member <NUM> is placed at a position that is of the injection mold and that has the shape of the fastening portion <NUM>. After integral injection molding is completed, a structure in which the fastening portion <NUM> is fixedly connected to the second connection sub-member <NUM> may be obtained. In this implementation, the first sub-portion <NUM> of the second connection sub-member <NUM> is located in the fastening portion <NUM>.

A specific shape of the fastening portion <NUM> is not limited, and may be set according to an actual requirement. In an implementation, the fastening portion <NUM> includes a fastening portion body <NUM> and a supporting portion <NUM> located on the side that is of the fastening portion body <NUM> and that is away from the base plate <NUM>. The supporting portion <NUM> is configured to support the circuit board <NUM>, so as to prevent the circuit board <NUM> from swaying in a direction perpendicular to the circuit board <NUM>. In this implementation, there are two supporting portions <NUM>, which are symmetrically disposed on the fastening portion body <NUM>. In some implementation, the supporting portion <NUM> may not be disposed for the fastening portion <NUM>, and a surface that is of the fastening portion body <NUM> and that is away from the base plate <NUM> may be directly used as a supporting surface to support the circuit board <NUM>.

In a possible implementation, the housing body <NUM> includes a first side wall <NUM>, the fastening portion <NUM> is located on a side that is of the base plate <NUM> and that faces the circuit board <NUM>, and the fastening portion <NUM> is disposed adjacent to the first side wall <NUM> (as shown in <FIG>). Refer to <FIG> again. In this implementation, the housing body <NUM> includes the base plate <NUM>, the first side wall <NUM>, a second side wall <NUM>, a third side wall <NUM>, and a fourth side wall <NUM>. The first side wall <NUM>, the second side wall <NUM>, the third side wall <NUM>, and the fourth side wall <NUM> are sequentially connected. The fastening portion <NUM> is disposed close to the first side wall <NUM>, and the electrical connection member <NUM> is electrically connected to an edge position that is of the circuit board <NUM> and that is adjacent to the first side wall <NUM> and an edge position that is of the metal heat dissipation member <NUM> and that is adjacent to the first side wall <NUM>. In other words, the fastening portion <NUM> and the electrical connection member <NUM> are located at edge positions of the accommodation space <NUM>. Disposing the fastening portion <NUM> and the electrical connection member <NUM> at edge positions of the accommodation space <NUM> may reduce occupied space in the middle portion of the housing <NUM>.

In a possible implementation, the metal heat dissipation member <NUM> includes a first side edge <NUM> (as shown in <FIG>), the first side edge <NUM> is disposed adjacent to the first side wall <NUM>, the first side edge <NUM> has a first notch <NUM>, and an orthographic projection of the fastening portion <NUM> on the base plate <NUM> is located in an orthographic projection of the first notch <NUM> on the base plate <NUM>. The first connection sub-member <NUM> is connected to the circuit board <NUM> through the first notch <NUM>, and the fastening portion <NUM> abuts against the circuit board <NUM> through the first notch <NUM>. The first notch <NUM> is disposed to avoid the fastening portion <NUM>, and a shape of the first notch <NUM> may be set based on a shape of the fastening portion <NUM>, so as to ensure that the metal heat dissipation member <NUM> can be attached to the base plate <NUM> to a maximum extent, and reduce an interstice between the metal heat dissipation member <NUM> and the base plate <NUM>. In this implementation, a shape of the orthographic projection of the fastening portion <NUM> on the base plate <NUM> is a rectangle, and the shape of the first notch <NUM> is also a rectangle. In some implementations, the shape of the orthographic projection of the fastening portion <NUM> on the base plate <NUM> is a rectangle, and the shape of the first notch <NUM> may be a square, an ellipse, an irregular shape, or the like, provided that the fastening portion <NUM> may abut against the circuit board <NUM> through the first notch <NUM>.

In the foregoing implementation, there are two fastening portions <NUM>, two electrical connection members <NUM>, and two first notches <NUM>, and the two first notches <NUM> are located on two sides of the first side edge <NUM> (as shown in <FIG>). Refer to <FIG>. In some implementations, one of the first notches <NUM> may be disposed on the first side edge <NUM>, the other first notch <NUM> may be disposed on a second side edge <NUM> of the metal heat dissipation member <NUM>, and the second side edge <NUM> is adjacent to the first side edge <NUM>. Refer to <FIG>. In some implementations, one of the first notches <NUM> may be disposed on the first side edge <NUM>, the other first notch <NUM> may be disposed on a third side edge <NUM> of the metal heat dissipation member <NUM>, and the third side edge <NUM> and the first side edge <NUM> are disposed at an interval. In this application, a quantity of first notches <NUM> may be set based on a quantity of electrical connection members <NUM> and a quantity of fastening portions <NUM>, and a specific position may be set based on specific structures of the housing <NUM> and the metal heat dissipation member <NUM>.

Refer to <FIG>. In a possible implementation, a first through hole <NUM> that penetrates two opposite surfaces of the metal heat dissipation member <NUM> is disposed on the metal heat dissipation member <NUM>, and the orthographic projection of the fastening portion <NUM> on the base plate <NUM> is located in an orthographic projection of the first through hole <NUM> on the base plate <NUM>. The first through hole <NUM> is located in the metal heat dissipation member <NUM>. In this implementation, the fastening portion <NUM> abuts against the circuit board <NUM> after passing through the first through hole <NUM>. A position of the first through hole <NUM> may be set at any position in the metal heat dissipation member <NUM>. When there are two fastening portions <NUM>, two electrical connection members <NUM>, and two first through holes <NUM>, the two first through holes <NUM> may be symmetrically or asymmetrically disposed in the metal heat dissipation member <NUM>.

Refer to <FIG>. In some implementations, when there are two fastening portions <NUM> and two electrical connection members <NUM>, one of the fastening portions <NUM> may abut against the circuit board <NUM> through the first notch <NUM>, and the other fastening portion <NUM> may abut against the circuit board <NUM> through the first through hole <NUM>.

Refer to <FIG> again. In a possible implementation, the extension direction of the third connection sub-member <NUM> intersects with the metal heat dissipation member <NUM>, a second through hole <NUM> that penetrates the two opposite surfaces of the metal heat dissipation member <NUM> is disposed on the metal heat dissipation member <NUM>, and one end that is of the third connection sub-member <NUM> and that is away from the second connection sub-member <NUM> passes through the second through hole <NUM> and is fixedly connected to the metal heat dissipation member <NUM> through the second through hole <NUM>. In this implementation, the extension direction of the third connection sub-member <NUM> is perpendicular to the metal heat dissipation member <NUM>. Within a process error range or to adapt to metal heat dissipation members <NUM> of different structures and shapes and electrical connection members <NUM> of different shapes, in some implementations, an included angle between the extension direction of the third connection sub-member <NUM> and the metal heat dissipation member <NUM> may be smaller than <NUM>° or larger than <NUM>°. The metal heat dissipation member <NUM> is disposed in approximately parallel to the entire board surface of the circuit board <NUM>. In this implementation, the extension direction of the third connection sub-member <NUM> is parallel to the extension direction of the first connection sub-member <NUM>, and both are perpendicular to the second connection sub-member <NUM>. When there are a plurality of electrical connection members <NUM>, there are also a plurality of second through holes <NUM>. A quantity of second through holes <NUM> are the same as a quantity of electrical connection members <NUM>. In this implementation, there are two electrical connection members <NUM> and two second through holes <NUM>.

In this implementation, the second through hole <NUM> is disposed adjacent to the fastening portion <NUM>. In this case, the third connection sub-member <NUM> does not need to be excessively long, so as to save costs. In some implementations, the second through hole <NUM> may be disposed away from the fastening portion <NUM>, or a distance between the second through hole <NUM> and the fastening portion <NUM> may be set according to an actual requirement.

In a possible implementation, a manner of fixed connection between the third connection sub-member <NUM> and the metal heat dissipation member <NUM> is one of interference fit connection, snap connection, or welding. The interference fit connection means that the third connection sub-member <NUM> has specific elasticity, and the third connection sub-member <NUM> is squeezed into the second through hole <NUM> and is fixedly connected to the second through hole <NUM>. One manner of the snap connection is that a guiding portion <NUM> and a step portion <NUM> (as shown in <FIG>) are disposed at an end portion of the third connection sub-member <NUM>, and after the guiding portion <NUM> passes through the second through hole <NUM>, the step portion <NUM> abuts against the metal heat dissipation member <NUM> around the second through hole <NUM>, so that the connection between the metal heat dissipation member <NUM> and the third connection sub-member <NUM> is fastened. Welding means that the third connection sub-member <NUM> is welded to a portion of the metal heat dissipation member <NUM> around the second through hole <NUM>.

In a possible implementation, a fastening post is disposed on a surface that is of the base plate <NUM> and that faces the metal heat dissipation member <NUM>, a third through hole that penetrates two opposite surfaces of the metal heat dissipation member <NUM> is disposed on the metal heat dissipation member <NUM>, the fastening post passes through the third through hole. After the fastening post is hot pressed, the fastening post is fastened on a surface that is of the metal heat dissipation member <NUM> and that faces the circuit board <NUM>.

In a possible implementation, a waterproof and breathable member is disposed on the base plate <NUM>. The waterproof and breathable member is configured to enable air to flow on two sides of the base plate <NUM>, so as to dissipate heat inside the housing <NUM>, avoid thermal expansion and cold contraction, and maintain pressure balance inside the housing <NUM>.

In a possible implementation, a flanging portion <NUM> (as shown in <FIG>) facing the circuit board <NUM> is disposed around the metal heat dissipation member <NUM>. The flanging portion <NUM> is configured to shield interference of an external signal to a signal in the circuit board <NUM> or prevent a signal in the circuit board <NUM> from being radiated. A shape of each side edge of the metal heat dissipation member <NUM> is not limited, and may be specifically set according to an actual requirement.

In a possible implementation, the metal heat dissipation member <NUM> includes a heat dissipation sub-member <NUM> protruded toward the circuit board <NUM>, thermal paste is disposed on a surface that is of the heat dissipation sub-member <NUM> and that faces the circuit board <NUM>, and an orthographic projection of the electronic device <NUM> of the circuit board <NUM> on the metal heat dissipation member <NUM> at least partially overlaps with an orthographic projection of the heat dissipation sub-member <NUM> on the metal heat dissipation member <NUM>. Thermal paste may accelerate heat dissipation efficiency of the electronic device <NUM> during working. In this implementation, the orthographic projection of the electronic device <NUM> on the metal heat dissipation member <NUM> completely overlaps the orthographic projection of the heat dissipation sub-member <NUM> on the metal heat dissipation member <NUM>, so as to improve a heat dissipation capability of the electronic device <NUM>. A quantity of heat dissipation sub-members <NUM> and distribution positions of the heat dissipation sub-members <NUM> may be set based on a quantity of electronic devices <NUM> and positions of the electronic devices <NUM> on the circuit board <NUM>.

In a possible implementation, the electronic apparatus <NUM> further includes a plurality of connecting portions <NUM>. The connecting portion <NUM> includes a connector <NUM> and a connecting line <NUM> (as shown in <FIG>) that are connected to each other. The connector <NUM> is located in the housing <NUM>, a plurality of second through-holes are disposed on the circuit board <NUM>, the connector <NUM> is inserted into the second through-hole and is electrically connected to the second through-hole, and the connecting line <NUM> passes through the third side wall <NUM> and is electrically connected to an external electronic device. The connecting portion includes at least one of a voltage line, a signal transmission line, and a ground line.

Refer to <FIG>. In a possible implementation, the circuit board <NUM> includes a signal transmitting unit <NUM> and a signal receiving unit <NUM>. The signal transmitting unit <NUM> is configured to transmit a signal, and the signal receiving unit <NUM> is configured to receive a signal. In this implementation, the electronic apparatus <NUM> may be configured to receive a signal and transmit a signal, and may be specifically a radar.

Refer to <FIG>, <FIG>, and <FIG>. In a possible implementation, the extension direction of the third connection sub-member <NUM> is parallel to the metal heat dissipation member <NUM>, and the third connection sub-member <NUM> is attached to a surface that is of the metal heat dissipation member <NUM> and that faces the base plate <NUM>. In this implementation, the third connection sub-member <NUM> is in a plate shape and has a surface that is attached to the metal heat dissipation member <NUM>. Attaching means that after the third connection sub-member <NUM> is attached to the metal heat dissipation member <NUM>, at least an electrical connection between the third connection sub-member <NUM> and the metal heat dissipation member <NUM> can be implemented. In this manner, the second through hole <NUM> does not need to be disposed in the metal heat dissipation member <NUM>, thereby reducing a process. In this implementation, the third connection sub-member <NUM> includes a flat plate, and a shape of the third connection sub-member <NUM> is not limited to a rectangle, a square, an ellipse, a circle, or the like. In some implementations, the third connection sub-member <NUM> may alternatively include at least two flat plates.

In a possible implementation, a distance from a surface that is of the third connection sub-member <NUM> and that is away from the base plate <NUM> to the base plate <NUM> is longer than a distance from a surface that is of the second sub-portion <NUM> and that is away from the base plate <NUM> to the base plate (as shown in <FIG>). In other words, compared with the second sub-portion <NUM>, the third connection sub-member <NUM> is protruded to the metal heat dissipation member <NUM>, so that the third connection sub-member <NUM> is more closely attached to the metal heat dissipation member <NUM>, thereby improving electrical connectivity.

Refer to <FIG>, an implementation of this application provides a terminal device <NUM>. The terminal device <NUM> includes the electronic apparatus <NUM> in any one of the foregoing implementations, and the electronic apparatus <NUM> is fastened to the terminal device <NUM>. The terminal device <NUM> may be a car, an uncrewed aerial vehicle, a robot, a yacht, or the like. In some implementations, the terminal device <NUM> may be a computer product or a communication product, for example, a computer, or a home appliance product having a communication function, for example, a refrigerator or a washing machine. In an implementation, a mounting portion is disposed outside the housing <NUM>, and is configured to mount the electronic apparatus <NUM> onto the terminal device <NUM>.

An implementation of this application provides a radar, and the radar includes the electronic apparatus <NUM> in any one of the foregoing implementations.

In an implementation, the radar further includes a signal processing apparatus, and the signal processing apparatus is electrically connected to a circuit board <NUM> in the electronic apparatus <NUM>. In this implementation, the circuit board <NUM> is provided with a signal transmitting unit <NUM> and a signal receiving unit <NUM>. The signal processing apparatus is configured to transmit a processed signal to the signal transmitting unit <NUM> for transmission, or the signal receiving unit <NUM> transmits a received signal to the signal processing apparatus for processing. The signal processing apparatus may be a mobile data center (Mobile Data Center, MDC).

In some implementations, a signal processor may be disposed on the circuit board <NUM> in the radar and is configured to process a signal.

In an implementation, when the signal transmitting unit <NUM> and the signal receiving unit <NUM> are not disposed on the circuit board <NUM>, the radar further includes a signal transceiver, and the signal transceiver is configured to transmit a signal and receive a signal.

Claim 1:
An electronic apparatus, wherein the electronic apparatus comprises a housing (<NUM>), a metal heat dissipation member (<NUM>), an electrical connection member (<NUM>), and a circuit board (<NUM>), the metal heat dissipation member (<NUM>) and the circuit board (<NUM>) are located in the housing (<NUM>), the housing (<NUM>) comprises a base plate (<NUM>), and the metal heat dissipation member (<NUM>) is located between the base plate (<NUM>) and the circuit board (<NUM>); and the circuit board (<NUM>) comprises a grounding layer (<NUM>) and an electronic device (<NUM>), one end of the electrical connection member (<NUM>) is electrically connected to the grounding layer (<NUM>), and the other end of the electrical connection member (<NUM>) is electrically connected to the metal heat dissipation member (<NUM>), characterized in that the electrical connection member (<NUM>) is integrally molded into the housing (<NUM>) through injection and is fixedly connected to the housing (<NUM>).