AVN device

Abstract

The present application provides an AVN device, comprising: a first housing comprising a first circuit board; a second housing comprising a second circuit board, and the second housing is combined with or separated from the first housing; a conduction module arranged on one side of the first housing or one side of the second housing, and the conduction module is located between the first housing and the second housing when the second housing is combined with the first housing; and a heat dissipation fan arranged on one side of the first housing.

Description

Technical Field

[0001] This invention relates to AVN devices. Specifically, it can be applied to the technical field of AVN devices in which a variable part, comprising a configuration with a short replacement cycle, is detachably mounted on a fixed part and cooled by the fixed part. Background Technology

[0002] An AVN (Audio-Video Networking) device is a vehicle multimedia system that integrates audio, video, and navigation into a single unit. The development of this AVN device provides users with greater convenience in operating various multimedia devices and effectively utilizes the vehicle's interior space.

[0003] Recently, AVN (Automatic Vehicle Noise Reduction) devices have been manufactured as built-in units, attached to vehicles, and shipped with them. Built-in AVN devices offer the advantage of more efficient use of vehicle interior space, but they also have disadvantages such as varying manufacturing processes depending on the vehicle model and inconvenient replacement. Considering that the lifespan of an AVN device is typically shorter than that of the vehicle, it is necessary to make the AVN device easily replaceable to ensure it is up-to-date.

[0004] Furthermore, as an AVN device performs multiple functions, the replacement intervals for the components performing each function may differ. The replacement interval can be determined based on the pace of technological advancement or durability. Because AVN devices are manufactured as integrated units, it is possible to inefficiently replace the entire device to replace only one component.

[0005] In addition, AVN devices are small devices that require a large number of calculations in response to complex information. Therefore, the development of structures that can effectively dissipate internal heat has been a major part of the development of AVN devices. Summary of the Invention

[0006] The problem the invention aims to solve

[0007] The purpose of this invention is to solve the above-mentioned and other problems through the description of this invention.

[0008] The purpose of this invention is to provide an AVN device, which consists of a detachable and replaceable variable part and a fixed part fixed to the vehicle.

[0009] The purpose of this invention is to provide an AVN device that effectively upgrades the AVN device by incorporating components with short replacement cycles into the variable section.

[0010] The object of the present invention is to provide an AVN device that improves the heat dissipation efficiency of the variable part by facilitating heat exchange between the variable part and the fixed part.

[0011] means for solving problems

[0012] An embodiment of the present invention for achieving the above objectives provides an AVN device, comprising: a first housing including a first circuit board; a second housing including a second circuit board, wherein the second housing is coupled to or detached from the first housing; a conductive module disposed on one side of the first housing or one side of the second housing, wherein when the second housing is coupled to the first housing, the conductive module is located between the first housing and the second housing; and a cooling fan disposed on one side of the first housing.

[0013] In addition, according to an embodiment of the present invention, an AVN device is provided, characterized in that the conductive module includes: an adhesive sheet attached to one side of the first housing or one side of the second housing; a thermally conductive sheet stacked on the adhesive sheet; and a non-adhesive sheet stacked on the thermally conductive sheet.

[0014] In addition, according to an embodiment of the present invention, an AVN device is provided, characterized in that the conductive module has a thickness greater than the assembly tolerance between the first housing and the second housing, and when the first housing and the second housing are joined, the conductive module deforms in shape as it is pressed, thereby making surface contact with the first housing and the second housing simultaneously.

[0015] In addition, according to an embodiment of the present invention, an AVN device is provided, wherein the second housing includes a second electronic component with a replacement cycle shorter than that of a first electronic component mounted in the first housing.

[0016] In addition, according to an embodiment of the present invention, an AVN device is provided, wherein the first electronic component is a fixed component including at least one of a vehicle linkage component, a radio, and an audio system.

[0017] In addition, according to an embodiment of the present invention, an AVN device is provided, wherein the second electronic component is a variable component including at least one of a CPU, a memory, and a communication device.

[0018] In addition, according to an embodiment of the present invention, an AVN device is provided, wherein the first housing includes a plurality of metal tabs protruding from a corresponding inner surface of an outer surface that contacts the second housing.

[0019] In addition, according to an embodiment of the present invention, an AVN device is provided, wherein the first housing includes a joining portion for forming an accommodating space for joining the second housing.

[0020] In addition, according to an embodiment of the present invention, an AVN device is provided, characterized in that, in addition to the mating surface that contacts the mating portion, the second housing also includes an exposed surface exposed to the outside.

[0021] In addition, according to an embodiment of the present invention, an AVN device is provided, wherein the conductive module is disposed on the mating surface of the second housing.

[0022] In addition, according to an embodiment of the present invention, an AVN device is provided, characterized in that the conductive module is disposed on one side of the first housing, and the housing also has a metal sheet covering the conductive module.

[0023] In addition, according to an embodiment of the present invention, an AVN device is provided, characterized in that the second housing is made of a metal material with a higher thermal conductivity than the metal material constituting the first housing.

[0024] The effects of the invention

[0025] The effects of the AVN device of the present invention will now be explained.

[0026] The present invention can provide an AVN device, which is divided into a detachable and replaceable variable part and a fixed part fixed to the vehicle.

[0027] The AVN device of the present invention enables effective upgrades by placing components with short replacement cycles in the variable section.

[0028] The AVN device of the present invention can improve the heat dissipation efficiency of the variable part by making heat exchange between the variable part and the fixed part easier.

[0029] The scope of application of this invention will become clear from the following detailed description. However, those skilled in the art will readily understand that various changes and modifications within the spirit and scope of this invention are possible, and therefore should be understood as specific embodiments, as described in the detailed description and preferred embodiments of the invention, being merely examples. Attached Figure Description

[0030] Figure 1 This is a block diagram illustrating the AVN device of the present invention.

[0031] Figure 2 This is a conceptual diagram illustrating an embodiment of the AVN device of the present invention.

[0032] Figure 3 This is a diagram illustrating the movement of heat generated inside the second housing of an AVN device according to an embodiment of the present invention.

[0033] Figure 4This is a diagram showing the mating surface between the first housing and the second housing of an AVN device according to an embodiment of the present invention.

[0034] Figure 5 This is a conceptual diagram illustrating another embodiment of the AVN device of the present invention. Detailed Implementation

[0035] The embodiments disclosed in this specification will now be described in detail with reference to the accompanying drawings. Unless otherwise specified in the drawing numbers, the same or similar constituent elements will be assigned the same reference numerals, and repeated descriptions thereof will be omitted. The suffixes "module" and "part" used in the following description are merely for ease of writing and do not inherently distinguish one from another. Furthermore, when describing the embodiments disclosed in this specification, detailed descriptions of related well-known technologies are omitted if it is determined that such detailed descriptions might obscure the main idea of ​​the disclosed embodiments. It should also be understood that the accompanying drawings are only for the purpose of facilitating understanding of the embodiments disclosed in this specification. The technical concepts disclosed in this specification are not limited to the drawings but encompass all modifications, equivalents, and substitutions included within the scope of the invention's ideas and techniques.

[0036] Terms containing ordinal numbers, such as "first" and "second," can be used to describe multiple constituent elements, but the constituent elements are not limited by these terms. These terms are used only for the purpose of distinguishing one constituent element from others.

[0037] When a component is described as "connected" or "coupled" to another component, it should be understood that it may be directly connected to or coupled to that other component, but there may also be other components between them. Conversely, when a component is described as "directly connected" or "directly coupled" to another component, it should be understood that there are no other components between them.

[0038] Unless the context clearly indicates otherwise, singular expressions include plural expressions.

[0039] In this application, terms such as “comprising” or “having” are used only to specify the presence of features, numbers, steps, actions, constituent elements, components or combinations thereof as described in the specification, and are not intended to exclude the possibility of the presence or addition of one or more other features or numbers, steps, actions, constituent elements, components or combinations thereof.

[0040] Figure 1 This is a block diagram illustrating the AVN device of the present invention.

[0041] The AVN device 100 of the present invention may include a communication unit 110, an output unit 120, an input unit 130, a detection unit 140, a storage unit 150, a power supply unit 160, an interface unit 170, and a control unit 180. Figure 1 The components shown are not essential components for implementing the AVN device 100. Therefore, the AVN device 100 described in this specification may have more or fewer components than those listed above.

[0042] The communication unit 110 of the present invention may include one or more modules enabling wireless communication between the AVN device 100 and a wireless communication system, between the AVN device 100 and other devices, and between the AVN device 100 and an external server. Additionally, the communication unit 110 may include one or more modules for connecting the AVN device 100 to one or more networks.

[0043] The communication unit 110 of the present invention may include at least one of a broadcast receiving module, a mobile communication module, a wireless internet module, a short-range communication module, and a location information module. The present invention may include at least one antenna for wireless communication. The antenna may be built into the AVN device 100 or may be formed externally on the vehicle in which it is installed.

[0044] The output unit 120 of the present invention is used to generate visual and auditory related outputs, and may include at least one of a display module and a sound output module. The display module can be formed as a layer structure with the touch sensor or as an integral part thereof to realize a touch screen. Such a touch screen can function as an input unit 130 that provides an input interface between the AVN device 100 and the user, and at the same time provide an output interface between the AVN device 100 and the user.

[0045] The input unit 130 of the present invention may include a camera (or image input unit) for inputting image signals, a microphone (or audio input unit) for inputting audio signals, and a user input unit (e.g., touch keys, mechanical keys, etc.) for receiving information from the user. Voice data or image data collected by the input unit 130 can be analyzed and processed into user control commands.

[0046] The input unit 130 of the present invention is used to input image information (or signals), audio information (or signals), data, or user-input information. For inputting image information, at least one camera may be included. The camera may be part of the AVN device 100 of the present invention, or may be a structure including the AVN device 100. That is, the camera and the AVN device 100 of the present invention may include at least some common features or configurations. The camera processes image frames such as still images or videos acquired by the image sensor in shooting mode. The processed image frames may be displayed on the display unit or stored in the storage unit 150. The camera provided in the AVN device 100 may be configured to form a matrix structure inside the vehicle. By forming the camera into a matrix structure as described above, multiple image information with various angles or focal points can be input to the AVN device 100. Alternatively, the camera may be a stereoscopic camera or a TOF camera to achieve stereoscopic images.

[0047] The detection unit 140 of the present invention may include one or more sensors for detecting at least one of the following: information within the AVN device 100, information about the surrounding environment surrounding the AVN 100, and user information. For example, the detection unit 140 may include at least one of the following: a proximity sensor, an illuminance sensor, a touch sensor, an accelerometer, a magnetic sensor, a gravity sensor, a gyroscope sensor, a motion sensor, an RGB sensor, an infrared sensor, a fingerprint sensor, an ultrasonic sensor, a light sensor, an environmental detection sensor (e.g., a barometer, a hygrometer, a thermometer, a radiation detection sensor, a thermal detection sensor, a gas detection sensor, etc.), and a chemical sensor (e.g., a medical sensor, a biometric sensor, etc.). On the other hand, the AVN device 100 disclosed in this specification can combine and use information detected by at least two or more of these sensors. Hereinafter, representative sensors that may be included in the detection unit 140 will be described in more detail.

[0048] First, a proximity sensor is a sensor that uses non-contact methods such as electromagnetic force or infrared light to detect objects approaching a designated detection surface, or the presence of objects nearby. This proximity sensor can be configured within the AVN device 100 surrounded by the aforementioned touchscreen, or near the touchscreen.

[0049] Examples of proximity sensors include transmissive photoelectric sensors, direct reflection photoelectric sensors, specular reflection photoelectric sensors, high-frequency oscillation proximity sensors, electrostatic capacitive proximity sensors, magnetic proximity sensors, and infrared proximity sensors. When the touchscreen is capacitive, the proximity sensor can be configured to detect the approach of a conductive object by utilizing the change in the electric field caused by its proximity. In this case, the touchscreen (or touch sensor) itself can be classified as a proximity sensor.

[0050] On the other hand, for ease of description, the act of an object approaching the touchscreen without contact and being recognized as being on the touchscreen is called a "proximity touch," while the act of an object actually touching the touchscreen is called a "contact touch." On the touchscreen, the position of an object approaching the touchscreen refers to the position of the object perpendicularly to the touchscreen when it approaches the touchscreen. The proximity sensor can detect proximity touches and proximity touch patterns (e.g., proximity touch distance, proximity touch direction, proximity touch speed, proximity touch time, proximity touch position, proximity touch movement state, etc.). Furthermore, as described above, the control unit 180 processes data (or information) corresponding to the proximity touch actions and proximity touch patterns detected by the proximity sensor, and can further output visual information corresponding to the processed data to the touchscreen. Furthermore, the control unit 180 can control the AVN device 100 to process different actions or data (or information) based on whether a touch at the same position on the touchscreen is a proximity touch or a contact touch.

[0051] Touch sensors can use at least one of various touch methods, such as resistive, capacitive, infrared, ultrasonic, and magnetic field methods, to detect touch (or touch input) applied to a touch screen (or display).

[0052] As an example, a touch sensor can be configured to convert changes in pressure applied to a specific area of ​​the touchscreen or changes in capacitance generated at that specific area into an electrical input signal. The touch sensor can be configured to detect the touch position, area, pressure, and capacitance of a touch object applied to the touchscreen. Here, the touch object is the object that applies the touch to the touch sensor, such as a finger, a stylus pen, or a pointer.

[0053] As described above, when a touch input is received by the touch sensor, a corresponding signal is sent to the touch controller. After processing the signal, the touch controller sends the corresponding data to the control unit 180. Thus, the control unit 180 can determine which area of ​​the display unit has been touched, etc. Here, the touch controller can be a separate component from the control unit 180, or it can be the control unit 180 itself.

[0054] On the other hand, the control unit 180 can perform different controls or the same controls depending on the type of touch object being touched by the touchscreen (or touch keys provided in addition to the touchscreen). The decision to perform different controls or the same controls based on the type of touch object can be determined based on the current operating state of the AVN device 100 or the running application.

[0055] On the other hand, the aforementioned touch sensors and proximity sensors can detect various types of touch independently or in combination, such as short touch, long touch, multitouch, drag touch, flick touch, pinch-in touch, pinch-out touch, swype touch, hovering touch, etc.

[0056] The storage unit 150 of the present invention can store data for supporting various functions of the AVN device 100. The storage unit 150 can store a plurality of application programs running in the AVN device 100, data for the operation of the AVN device 100, and instructions. At least a portion of these application programs can be downloaded from an external server via wireless communication. Furthermore, at least a portion of these application programs may be present on the AVN device 100 from the factory to implement the basic functions of the AVN device 100 (navigation function, AI function, broadcast reception and output function, etc.). On the other hand, application programs can be stored in the storage unit 150 and installed in the AVN device 100, and can be operated via the control unit 180 to execute the operation (or function) of the AVN device 100.

[0057] The power supply unit 160 of the present invention can receive external or internal power and supply power to various components included in the AVN device 100 under the control of the control unit 180. This power supply unit 160 may be a battery included in the vehicle, a built-in battery, or a replaceable battery.

[0058] The interface section 170 of the present invention can function as a pathway to various types of external devices connected to the AVN device 100. This interface section 170 may include at least one of the following: a wired / wireless headset port, a charger port, a wired / wireless data port, a memory card port, a port for connecting a device with an identification module, an audio I / O port, a video I / O port, and a headphone port, and may also include a vehicle connection port for vehicle-to-vehicle connectivity. In the AVN device 100, appropriate control related to the connected external device can be performed in correspondence with the external device connected to the interface section 170.

[0059] The interface unit 170 of the present invention may include a user interface for user interaction. The present invention can perform the combined functions of the AVN device 100 through a voice- or vision-based user interface without requiring the user to directly touch the AVN device 100.

[0060] Touch-based user interfaces require the user to be looking at the AVN device 100 for interaction, which could be dangerous while driving. However, voice- or vision-based user interfaces can interact without the user looking at the AVN device 100, making them suitable for AVN devices 100 mounted in vehicles.

[0061] However, voice-based user interfaces can be limited by the surrounding environment. For example, when there are passengers in the vehicle and it is noisy, or when external noise enters through an open window, it may be difficult to distinguish the user's voice. In addition, when passengers in the vehicle are talking on the phone or resting, it may be inconvenient to interact with the AVN device via voice.

[0062] Therefore, vision-based user interfaces can facilitate interaction between AVN devices and users under the constraints described above. Consequently, technologies for enabling AVN devices to interact with users through vision-based user interfaces are currently under active research.

[0063] In addition to actions related to the application installed on the AVN device 100, the control unit 180 of the present invention can generally control the overall operation of the AVN device 100 and perform vehicle control as needed. By processing signals, data, information, etc. input or output via the aforementioned components or running the application stored in the storage unit 150, the control unit 180 can provide or process appropriate information or functions to the user.

[0064] Figure 2 This is a conceptual diagram illustrating an embodiment of the AVN device of the present invention.

[0065] The AVN device 100 of the present invention may include a first housing 210 and a second housing 220 detachably connected to the first housing 210. The first housing 210 may be a fixed part fixed to the vehicle, and the second housing 220 may be a replaceable variable part. Specifically, the first housing may be configured to be directly built into and connected to the vehicle.

[0066] The internal mounting space of the first housing 210 of the present invention may include a first circuit board 211, and the internal mounting space of the second housing 220 may include a second circuit board 221. The first circuit board 211 may be connected to a first electronic component disposed in the first housing 210, and the second circuit board 221 may be connected to a second electronic component disposed in the second housing 220. Depending on the circumstances, the present invention may provide a single circuit board in either the first housing 210 or the second housing 220, and the single circuit board may be connected to both the first electronic component disposed in the first housing 210 and the second electronic component disposed in the second housing 220.

[0067] The replacement cycle of the second electronic component disposed in the second housing 220 of the present invention can be shorter than that of the first electronic component disposed in the first housing 210. The replacement cycle can be determined based on the time it takes for upgraded components to be launched to the market due to rapid technological development, or based on the rate of durability or functional degradation.

[0068] For example, the first electronic component can be a fixed component including at least one of an audio system, a vehicle linkage component, and a radio. The fixed component may have a long replacement cycle or not require replacement. The second electronic component can be a variable component including at least one of a CPU, a memory, and a communication device. The variable component may have a shorter replacement cycle than the fixed component.

[0069] The first circuit board 211 and the second circuit board 221 of the present invention can be energized through terminals when the first housing 210 and the second housing 220 are combined. When the first circuit board 211 and the second circuit board 221 are electrically connected, the entire AVN device 100 can be controlled by the CPU (control unit) provided on the second circuit board 221.

[0070] In this invention, a second housing, serving as a variable component, is detachably mounted on a first housing 210, which serves as a fixed component. The first housing 210 houses electronic components with long replacement cycles or those that do not require replacement, while the second housing 220 houses electronic components with short replacement cycles. This allows the AVN device 100 to be upgraded by replacing only the second housing 220 in accordance with the replacement cycle. In this case, since the present invention avoids replacing the entire AVN device 100 to replace electronic components with short replacement cycles, resource waste is prevented, and the detachable second housing 220 provides ease of replacement. Furthermore, recently, with the AVN device 100 being manufactured as a built-in type, it can be produced in different shapes depending on the vehicle model. Therefore, the first housing 210 of this invention can be manufactured as a built-in type to match the vehicle model, while the second housing 220 can be manufactured to a uniform specification and produced regardless of the vehicle model, thereby preventing resource waste.

[0071] The first housing 210 of the present invention may include a joining portion 212 for forming an accommodating space for joining with the second housing 220. The second housing 220 may include a joining surface 222 that contacts the joining portion 212 when the second housing 220 is joined with the joining portion 212, and an exposed surface 225 exposed to the outside. The second housing 220 of the present invention can dissipate internally generated heat to the outside through the exposed surface 225. Specifically, the second housing 220 can dissipate heat generated by the second circuit board 221 to the outside through the exposed surface 225 by convection and radiation. The second housing 220 may be made of a metallic material to facilitate the dissipation of internal heat through the exposed surface 225. In addition, heat generated inside the second housing 220 can be conducted to the first housing 210 and dissipated to the outside. The first housing 210 may be made of a metallic material to facilitate the conduction of heat generated in the second housing 220 to the first housing 210. Specifically, the joining portion 212 of the first housing 210 may be made of a metallic material, while other parts may be made of a plastic material.

[0072] The present invention may include a conductive module 223 disposed on one side of the first housing 210 or one side of the second housing 220. Specifically, the present invention may include a conductive module 223 disposed on the mating surface 222 of the second housing 220.

[0073] When the second housing 220 is combined with the first housing 210, the conductive module 223 of the present invention can be disposed between the first housing 210 and the second housing 220 and function as a heat exchange passage. Specifically, the conductive module 223 may include: an adhesive sheet 2231 attached to one side of the first housing 210 or one side of the second housing 220; a heat-conducting sheet 2232 laminated on the adhesive sheet 2231; and a non-adhesive sheet 2233 laminated on the heat-conducting sheet 2232. The adhesive sheet 2231 may be a double-sided adhesive sheet with the heat-conducting sheet 2232 attached to one side of the first housing 210 or one side of the second housing 220. The heat-conducting sheet 2232 may be a sheet made of a material with high thermal conductivity. The non-adhesive sheet 2233 is laminated on the heat-conducting sheet 2232 such that one side is adhered to the heat-conducting sheet 2232 and the other side does not have adhesive properties. Relatedly, by Figure 4 To explain in detail.

[0074] The first housing 210 of the present invention may include a fan 214 for dissipating internally generated heat to the outside. As a fixed part, the first housing of the present invention is relatively larger and has more space than the variable part, i.e., the second housing 220. Therefore, it is preferable that the fan 214 be included in the first housing 210 instead of the second housing 220. Furthermore, the fan 214 is a component with a long replacement cycle or that does not require replacement; therefore, it is more preferable to provide it in the first housing 210 than in the second housing 220. However, depending on the circumstances, a fan may also be provided in the second housing 220. In this case, the performance of the fan 214 provided in the first housing 210 may be superior to that of the fan provided in the second housing 220.

[0075] Additionally, the first housing 210 of the present invention may include a plurality of metal tabs 215 protruding from its inner surface. The metal tabs 215 are configured to widen the inner surface of the first housing 210 and can function to dissipate heat transferred from the second housing 220 to the interior space of the first housing 210 and to exhaust it to the outside via the fan 214.

[0076] The process of releasing heat generated inside the second housing 220 to the outside is described in detail below.

[0077] Figure 3 This is a diagram illustrating the movement of heat generated inside the second housing 220 of an AVN device 100 according to an embodiment of the present invention.

[0078] The second circuit board 221, disposed in the second housing 220 of the present invention, is responsible for the control and operation of the AVN device 100, and its heat generation may be greater than that of the first circuit board 211. Therefore, a structure that allows the heat generated inside the second housing 220 to be discharged to the outside may be more important.

[0079] The heat generated inside the second housing 220 of the present invention can be released to the outside through convection and radiation on the exposed surface 225. The exposed surface 225 of the second housing 220 can be constructed using a metallic material with excellent conductivity, so that convection and radiation can be easily generated on the exposed surface 225.

[0080] The second housing 220 of the present invention is a variable part and can be detachably attached to the first housing 210, which is a fixed part. When the second housing 220 is attached to the first housing 210, the heat generated inside the second housing 220 can be conducted to the first housing 210 and discharged to the outside.

[0081] Specifically, heat conducted from the second housing 220 to the first housing 210 can be discharged to the outside through convection and radiation on the surface of the first housing 210. At this time, the fan 214 disposed on the first housing 210 can function to cool the first housing 210. That is, heat generated inside the second housing 220 can be discharged to the outside through the fan 214 of the first housing 210 connected to the second housing 220.

[0082] The present invention may include a conductive module 223 and a metal fin 215 to facilitate the transfer of heat generated inside the second housing 220 to the first housing 210.

[0083] The conductive module 223 of the present invention can fix the heat-conducting sheet 2232 by means of adhesive sheet 2231, and can be attached to the first housing 210 in a detachable manner without obstructing the second housing 220 from being attached to the first housing 210 by means of non-adhesive sheet 2233.

[0084] When the second housing 220 is attached to the first housing 210, the conductive module 223 of the present invention can be compressed and simultaneously make surface contact with both the first housing 210 and the second housing 220. The conductive module 223 of the present invention can facilitate the conduction of heat generated inside the second housing 220 to the first housing 210 through this surface contact. Relatedly, through... Figure 4 To explain in detail.

[0085] The thickness of the conductive module 223 of the present invention can be greater than the assembly tolerance h of the first housing 210 and the second housing 220. Furthermore, the thickness of the conductive module 223 of the present invention can be less than the thickness that will not obstruct the bonding of the first housing 210 to the second housing 220. That is, the conductive module 223 of the present invention can have a thickness that neither obstructs the bonding between the first housing 210 and the second housing 220, but also allows it to simultaneously contact the surfaces of the first housing 210 and the second housing 220 after compression.

[0086] The present invention may include a plurality of metal tabs 215 on the inner surface of the first housing 210, thereby facilitating the conduction of heat generated inside the second housing 220 to the first housing 210. Specifically, the metal tabs 215 disposed on the inner surface of the first housing 210 can function to cool the first housing 210 by increasing the contact area for heat conducted to the first housing 210 to dissipate into the first housing 210, thereby improving the efficiency of heat conduction from the second housing 220 to the first housing 210.

[0087] Therefore, the metal fin 215 of the present invention can be a corresponding surface of the outer surface of the first housing 210 that contacts the second housing 220. That is, the heat generated in the second housing 220 can be convection and radiation to the interior of the first housing 210 along the metal fin 215 of the first housing 210, and can be discharged to the outside by the fan 214.

[0088] Figure 4 This is a diagram showing the mating surface between the first housing 210 and the second housing 220 of an AVN device 100 according to an embodiment of the present invention. Refer to [reference needed] as required. Figure 3 This is to explain the content.

[0089] The first housing 210 and the second housing 220 of the present invention are detachable structures and are not made as a single piece. Therefore, even if the first housing 210 and the second housing 220 are combined, an air gap 232 will be generated at the joint between the first housing 210 and the second housing 220.

[0090] Specifically, Figure 4 (a) illustrates an embodiment in which an air gap 232 is generated at the joint between the first housing 210 and the second housing 220, excluding the conductive module 223 of the present invention. When the second housing 220 is joined to the first housing 210, the joint 212 of the first housing 210 and the joint surface 222 of the second housing 220 make point contact 231 and generate an air gap 232, rather than being completely tightly fitted. The generated air gap 232 may reduce the conductivity of heat moving from the second housing 220 to the first housing 210.

[0091] To solve the above problems, the present invention can provide a conductive module 223 between the first housing 210 and the second housing 220. Specifically, Figure 4 (b) shows an embodiment in which the conductive module 223 is compressed and simultaneously makes surface contact 233 with the joint 212 of the first housing 210 and the joint surface 222 of the second housing 220 when the present invention includes the conductive module 223.

[0092] That is, the present invention is characterized by using a conductive module 223 to compensate for the possible decrease in thermal conductivity that may occur as the first housing 210 and the second housing 220 are separated.

[0093] Figure 5 This is a conceptual diagram illustrating another embodiment of the AVN device 100 of the present invention. Hereinafter, it will be mainly described in conjunction with... Figure 2 and Figure 3 Different parts.

[0094] The present invention provides that by placing the conductive module 223 in the second housing 220, which is a variable part, the conductive module 223 can be replaced at the same time as the second housing 220 is replaced.

[0095] When the second housing 220 is attached to the first housing 210, the conductive module 223 of the present invention is a compressed configuration, and its shape may deform during long-term use, potentially reducing the contact area between the second housing 220 and the first housing 210. Therefore, compared to the case where the conductive module 223 is fixedly installed in the first housing 210, it is preferable to replace it together with the second housing 220.

[0096] However, if the shape of the conductive module 223 does not change significantly, it can be mounted on the first housing 210 and fixed in place. In this case, when the conductive module 223 is directly exposed to the outside, the contact area between the first housing 210 and the second housing 220 is reduced due to the inclusion of foreign objects. Therefore, the conductivity of heat generated inside the second housing 220 to the first housing 210 may decrease. Therefore, in this invention, when the conductive module 223 is mounted on the outer surface of the first housing 210, a metal sheet 224 covering the conductive module 223 may also be included.

[0097] Specifically, Figure 5 (a) shows an embodiment in which a conductive module 223 is provided at the joint 212 of the first housing 210, and a metal sheet 224 covering the conductive module 223 is provided. Additionally, Figure 5 (b) shows the state in which the second housing 220 and the first housing 210 are combined and the conductive module 223 is compressed.

[0098] Specifically, in Figure 5 In case (b), the conductive module 223 can be compressed and simultaneously contact the joint 212 of the first housing 210 and the metal sheet 224. However, as Figure 4 As shown, the metal sheet 224 and the second housing 220 make point contact at their mating surface 222, which may create an air gap. However, a contact force is generated at the second mating surface 222 of the metal sheet 224 and the second housing due to the external force generated by the compression of the conductive module 223, thereby forming a contact force that is more effective than... Figure 4 The air gap generated in the second housing 220 is smaller. As a result, the heat generated inside the second housing 220 can be conducted to the first housing 210 and easily discharged to the outside.

[0099] The detailed description above should not be construed as limiting in all respects, but rather as exemplary. The scope of the invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the invention should fall within its scope.

Claims

1. An AVN device, wherein, Comprising: a first housing including a receiving space open on one side and provided with a first coupling surface on the other side, and a first circuit board; a second housing including a second circuit board, and being coupled to or separated from the receiving space of the first housing; a conductive module located between the first coupling surface of the first housing and a second coupling surface of the second housing when the second housing is coupled to the receiving space of the first housing; and a heat dissipation fan provided in the first housing to discharge air inside the first housing to the outside, the second housing including an exposed surface located on the opposite side of the second coupling surface and not accommodated in the receiving space and exposed to the outside, the conductive module including one surface fixed to one of the first coupling surface and the second coupling surface and the other surface facing the other and not having adhesive force, the conductive module having a thickness greater than an assembly tolerance between the first coupling surface of the first housing and the second coupling surface of the second housing, the conductive module being deformed in shape as it is pressed when the second housing is coupled to the receiving space of the first housing, thereby simultaneously contacting the first coupling surface and the second coupling surface.

2. The AVN device according to claim 1, wherein the conductive module includes: an adhesive sheet having one surface attached to the first housing or the second housing; a thermally conductive sheet laminated to the other surface of the adhesive sheet; and a non-adhesive sheet laminated to the thermally conductive sheet and having a non-adhesive exposed surface.

3. The AVN device according to claim 1, wherein a second electronic component is installed in the second housing, and the second electronic component has a shorter replacement period than a first electronic component installed in the first housing.

4. The AVN device according to claim 3, wherein the first electronic component is a fixed component including at least one of a vehicle linkage component, a radio, and a sound system, the second electronic component is a variable component including at least one of a CPU, a memory, and a communication device.

5. The AVN device according to claim 1, wherein the first circuit board is provided in an internal mounting space of the first housing, the first housing includes a plurality of metal fins protruding from an inner surface of the internal mounting space corresponding to the first coupling surface, the heat dissipation fan guides air flow through the metal fins.

6. The AVN device according to claim 1, wherein the exposed surface is composed of a material having a high thermal conductivity.

7. The AVN device according to claim 1, wherein the first housing further has a metal sheet covering the conductive module and fixing the conductive module to the first coupling surface.

8. The AVN device according to claim 1, wherein a terminal for electrically connecting the first circuit board and the second circuit board when the first housing and the second housing are coupled is included. ​

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