KR20140000933A - Mobile terminal - Google Patents

Abstract

The present invention includes a heat pipe for receiving heat from a heat generating element inside a mobile terminal and transferring the heat to a heat dissipation unit, and a housing for thermally connecting the heat generating element and the heat pipe, wherein the housing surrounds the heat generating element. A first portion including sidewalls and a cover coupled to the sidewalls and covering the heating element and a second portion protruding from the first portion toward the heatpipe and at least a portion of which is connected to the heatpipe Provide a terminal.

Description

[0001] MOBILE TERMINAL [0002]

The present invention relates to a mobile terminal having a structure capable of increasing heat dissipation efficiency.

A mobile terminal is a portable electronic device that is portable and has one or more functions of voice and video call function, information input / output function, and data storage function.

As the functions are diversified, the mobile terminal is implemented as a multimedia player having complicated functions such as photographing, video shooting, playback of music or video file, game, broadcast reception, and the like.

In order to support and enhance the function of the mobile terminal, various attempts have been made in the hardware part and / or the software part of the mobile terminal.

Recently developed and released mobile terminal has been developed to perform a variety of content, such as movie download service (VOD), music download service (MOD), etc. Accordingly, users can use the terminal as well as voice transmission and simple Internet access Contents such as watching a movie and listening to music can be used.

In order to perform the above various services, components such as an AP (Application Processor) and a Power Management Integrated Circuit (PMIC) are mounted in the terminal, and terminal performance is generated by heat generated from the components. The research on the structure of the mobile terminal which can prevent this fall is progressing.

The present invention is to provide a mobile terminal that can transfer the heat of the heat generating element to the heat radiating portion more quickly and efficiently.

In order to solve the above problems, the mobile terminal according to an embodiment of the present invention, the heat pipe for receiving heat from the heat generating element inside the mobile terminal to transfer the heat to the heat dissipation unit and the heat generating element and the heat pipe thermally And a housing configured to connect to the heat pipe, the housing including a first portion including sidewalls surrounding the heat generating element and a cover coupled to the sidewalls and covering the heat generating element, and from the first portion toward the heat pipe. A second portion that protrudes and at least a portion of which is connected to the heat pipe.

As an example related to the present invention, the second portion includes a bent portion bent to surround the heat pipe.

As an example related to the present invention, the mobile terminal further includes a thermal interface material disposed between the first portion and the heating element.

The thermal interface material may be a thermal grease interposed between the first portion and the heating element.

As an example related to the present invention, the mobile terminal further includes a thermal interface material mounted to the bent portion to reduce contact thermal resistance between the housing and the heat pipe.

As an example related to the present invention, the heat pipe has a length extending toward one side of the mobile terminal and a length bent at one end of the first portion and parallel to the one side adjacent to the one side. It includes a second part.

As an example related to the present invention, a plurality of holes are formed in a case adjacent to the second part along a length direction of the second part.

As an example related to the present invention, the mobile terminal further includes a motor disposed adjacent to one side to vibrate the one side to flow air around the heat pipe.

As an example related to the present invention, the heat pipe includes first and second extensions extending in lengths in opposite directions from the housing to be symmetrical with respect to the housing.

As an example related to the present invention, one surface of the mobile terminal is formed with a hole through which air inside the mobile terminal can be discharged, and the other side is equipped with a fan capable of flowing air inside the mobile terminal.

According to the present invention having the above configuration, a heat pipe for transferring heat generated by the heat generating element to the heat dissipation unit is mounted inside the mobile terminal, and a housing for facilitating heat conduction between the heat generating element and the heat pipe is provided. In addition, a mobile terminal for dissipating heat from the heat generating element to the outside more quickly may be provided.

In addition, the structure and arrangement of the heat pipes may be variously modified to minimize the influence of the directionality of the heat pipes, thereby providing a mobile terminal having a structure for maximizing a heat dissipation effect.

In addition, by forming a hole in the mobile terminal case to naturally convection air inside the terminal or to force the convection by vibrating the terminal case, the heat of the heat generating element can be released to the outside not only by conduction but also by convection. Therefore, more efficient cooling can be achieved.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.
FIG. 2A is a perspective view of an example of a mobile terminal according to the present invention. FIG.
FIG. 2B is a rear perspective view of the mobile terminal shown in FIG. 2A. FIG.
3 is an exploded view of the mobile terminal of FIG. 2A viewed from the front;
4A is a cross sectional view of the housing taken along the line V-V in FIG. 3;
4B is a cross-sectional view showing another embodiment of a housing related to the present invention.
Figure 5a is a conceptual diagram showing that heat is released through the heat dissipation unit 230.
Figure 5b is a conceptual diagram showing the heat released through the fan.
6A-6C are side cross-sectional views illustrating other embodiments related to the present invention.
7a to 7p are modifications showing the arrangement of the housing and the heat pipe of the present invention.
8A and 8B show further variations of the housing and heatpipe arrangements associated with the present invention.

Hereinafter, a mobile terminal related to the present invention will be described in detail with reference to the drawings. In the present specification, the same or similar reference numerals are given to different embodiments in the same or similar configurations. As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

In the present specification, the same or similar reference numerals are given to different embodiments in the same or similar configurations. As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. In addition, the suffix "module" and " part "for constituent elements used in the following description are given or mixed in consideration of ease of specification, and do not have their own meaning or role.

The mobile terminal described in this specification may include a mobile phone, a smart phone, a laptop computer, a digital broadcasting terminal, a PDA (Personal Digital Assistants), a PMP (Portable Multimedia Player), and navigation. However, it will be understood by those skilled in the art that the configuration according to the embodiment described herein may be applied to a fixed terminal such as a digital TV, a desktop computer, or the like, except when applicable only to the mobile terminal 100. [

The mobile terminal 100 includes a wireless communication unit 110, an audio / video input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, a memory 160, A controller 170, a controller 180, a power supply 190, and the like. The components shown in Fig. 1 are not essential, so that the mobile terminal 100 having more or fewer components may be implemented. Hereinafter, the components will be described in order.

The wireless communication unit 110 may include one or more modules for enabling wireless communication between the mobile terminal 100 and the wireless communication system or between the mobile terminal 100 and the network in which the mobile terminal 100 is located. For example, the wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 112, a wireless Internet module 113, a short range communication module 114, and a location information module 115 .

The broadcast receiving module 111 receives a broadcast signal and / or broadcast related information from an external broadcast management server through a broadcast channel.

The broadcast channel may include a satellite channel and a terrestrial channel. The broadcast management server may refer to a server for generating and transmitting broadcast signals and / or broadcast related information, or a server for receiving broadcast signals and / or broadcast related information generated by the broadcast management server and transmitting the generated broadcast signals and / or broadcast related information. The broadcast signal may include a TV broadcast signal, a radio broadcast signal, a data broadcast signal, and a broadcast signal in which a data broadcast signal is combined with a TV broadcast signal or a radio broadcast signal.

The broadcast-related information may refer to a broadcast channel, a broadcast program, or information related to a broadcast service provider. The broadcast-related information may also be provided through a mobile communication network. In this case, it may be received by the mobile communication module 112.

The broadcast-related information may exist in various forms. For example, an EPG (Electronic Program Guide) of DMB (Digital Multimedia Broadcasting) or an ESG (Electronic Service Guide) of Digital Video Broadcast-Handheld (DVB-H).

For example, the broadcast receiving module 111 may be a Digital Multimedia Broadcasting-Terrestrial (DMB-T), a Digital Multimedia Broadcasting-Satellite (DMB-S), a Media Forward Link Only Broadcast-Handheld (ISDB-T), Integrated Services Digital Broadcast-Terrestrial (ISDB-T), and the like. Of course, the broadcast receiving module 111 may be adapted to other broadcasting systems as well as the digital broadcasting system described above.

The broadcast signal and / or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 112 transmits and receives radio signals to at least one of a base station, an external terminal, and a server on a mobile communication network. The wireless signal may include various types of data depending on a voice call signal, a video call signal or a text / multimedia message transmission / reception.

The wireless Internet module 113 is a module for wireless Internet access, and may be built in or externally attached to the mobile terminal 100. WLAN (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) and the like can be used as wireless Internet technologies.

The short-range communication module 114 refers to a module for short-range communication. Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, and the like can be used as a short range communication technology.

The position information module 115 is a module for obtaining the position of the mobile terminal 100, and a representative example thereof is a Global Position System (GPS) module.

Referring to FIG. 1, an A / V (Audio / Video) input unit 120 is for inputting an audio signal or a video signal, and may include a camera 121 and a microphone 122. The camera 121 processes image frames such as still images or moving images obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame can be displayed on the display unit 151. [

The image frame processed by the camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. [ Two or more cameras 121 may be provided depending on the use environment.

The microphone 122 receives an external sound signal through a microphone in a communication mode, a recording mode, a voice recognition mode, or the like, and processes it as electrical voice data. The processed voice data can be converted into a form that can be transmitted to the mobile communication base station through the mobile communication module 112 when the voice data is in the call mode, and output. Various noise reduction algorithms may be implemented in the microphone 122 to remove noise generated in receiving an external sound signal.

The user input unit 130 generates input data for a user to control the operation of the terminal. The user input unit 130 may include a key pad dome switch, a touch pad (static pressure / capacitance), a jog wheel, a jog switch, and the like.

The sensing unit 140 may sense the position of the mobile terminal 100 such as the open / close state of the mobile terminal 100, the position of the mobile terminal 100, the presence of the user, the orientation of the mobile terminal 100, And generates a sensing signal for controlling the operation of the mobile terminal 100. For example, when the mobile terminal 100 is in the form of a slide phone, it may sense whether the slide phone is opened or closed. In addition, whether the power supply unit 190 is supplied with power, whether the interface unit 170 is coupled to the external device may be sensed. Meanwhile, the sensing unit 140 may include a proximity sensor 141.

The output unit 150 is for generating output related to the visual, auditory or tactile sense and includes a display unit 151, an audio output module 152, an alarm unit 153, and a haptic module 154 .

The display unit 151 displays (outputs) information processed by the mobile terminal 100. For example, when the mobile terminal 100 is in the call mode, a UI (User Interface) or a GUI (Graphic User Interface) associated with a call is displayed. When the mobile terminal 100 is in the video communication mode or the photographing mode, the photographed and / or received video or UI and GUI are displayed.

The display unit 151 includes a liquid crystal display 151, a thin film transistor-liquid crystal display 151, an organic light-emitting diode (OLED) , A flexible display 151, and a 3D display 151 (3D display).

Some of the displays 151 may be transparent or light transmissive so that they can be viewed through the display 151. This may be referred to as a transparent display 151. A typical example of the transparent display 151 is TOLED (Transparent OLED) or the like. The rear structure of the display unit 151 may also be of a light transmission type. With this structure, the user can see an object located behind the terminal body through the area occupied by the display unit 151 of the terminal body.

There may be two or more display units 151 according to the embodiment of the mobile terminal 100. For example, the plurality of display units 151 and 151 may be spaced apart or integrally disposed on one surface of the mobile terminal 100, or may be disposed on different surfaces.

(Hereinafter, referred to as a 'touch screen') in which a display unit 151 and a sensor for sensing a touch operation (hereinafter, referred to as 'touch sensor') form a mutual layer structure, It can also be used as an input device. The touch sensor may have the form of, for example, a touch film, a touch sheet, a touch pad, or the like.

The touch sensor may be configured to convert a change in a pressure applied to a specific portion of the display unit 151 or a capacitance generated in a specific portion of the display unit 151 into an electrical input signal. The touch sensor can be configured to detect not only the position and area to be touched but also the pressure at the time of touch.

If there is a touch input to the touch sensor, the corresponding signal (s) is sent to the touch controller. The touch controller processes the signal (s) and transmits the corresponding data to the controller 180. As a result, the controller 180 can know which area of the display unit 151 is touched.

Referring to FIG. 1, a proximity sensor 141 may be disposed in an inner region of the mobile terminal 100 surrounded by the touch screen or near the touch screen. The proximity sensor refers to a sensor that detects the presence or absence of an object approaching a predetermined detection surface or a nearby object without mechanical contact using the force of an electromagnetic field or infrared rays. The proximity sensor has a longer life span than the contact sensor and its utilization is also high.

Examples of the proximity sensor include a transmission photoelectric sensor, a direct reflection photoelectric sensor, a mirror reflection photoelectric sensor, a high frequency oscillation proximity sensor, a capacitive proximity sensor, a magnetic proximity sensor, and an infrared proximity sensor. And to detect the proximity of the pointer by the change of the electric field along the proximity of the pointer when the touch screen is electrostatic. In this case, the touch screen (touch sensor) may be classified as a proximity sensor.

Hereinafter, for convenience of explanation, the act of allowing the pointer to be recognized without being in contact with the touch screen so that the pointer is located on the touch screen is referred to as a "proximity touch", and the touch The act of actually touching the pointer on the screen is called "contact touch." The position where the pointer is proximately touched on the touch screen means a position where the pointer is vertically corresponding to the touch screen when the pointer is touched.

The proximity sensor detects a proximity touch and a proximity touch pattern (e.g., a proximity touch distance, a proximity touch direction, a proximity touch speed, a proximity touch time, a proximity touch position, a proximity touch movement state, and the like). Information corresponding to the detected proximity touch operation and the proximity touch pattern may be output on the touch screen.

The sound output module 152 may output audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. The sound output module 152 also outputs sound signals related to functions (e.g., call signal reception sound, message reception sound, etc.) performed in the mobile terminal 100. [ The audio output module 152 may include a receiver, a speaker, a buzzer, and the like.

The alarm unit 153 outputs a signal for notifying the occurrence of an event of the mobile terminal 100. Examples of events generated in the mobile terminal 100 include call signal reception, message reception, key signal input, touch input, and the like. The alarm unit 153 may output a signal for notifying the occurrence of an event in a form other than the video signal or the audio signal, for example, vibration. The video signal or the audio signal may be output through the display unit 151 or the audio output module 152 so that they may be classified as a part of the alarm unit 153.

The haptic module 154 generates various tactile effects that the user can feel. Vibration is a representative example of the haptic effect generated by the haptic module 154. The intensity and pattern of the vibration generated by the hit module 154 can be controlled. For example, different vibrations may be synthesized and output or sequentially output.

In addition to the vibration, the haptic module 154 may be used for stimulation such as a pin array vertically moving with respect to the contact skin surface, a jetting force or suction force of air through an injection or inlet, grazing to the skin surface, contact of an electrode, and electrostatic force. Various tactile effects can be generated, such as effects by the endothermic and the reproduction of a sense of cold using the elements capable of endotherm or heat generation.

The haptic module 154 can be implemented not only to transmit the tactile effect through the direct contact but also to allow the user to feel the tactile effect through the muscular sensation of the finger or arm. The haptic module 154 may include two or more haptic modules 154 according to the configuration of the portable terminal 100.

The memory 160 may store a program for the operation of the controller 180 and temporarily store input / output data (e.g., a phone book, a message, a still image, a moving picture, etc.). The memory 160 may store data on vibration and sound of various patterns outputted when a touch is input on the touch screen.

The memory 160 may be a flash memory type, a hard disk type, a multimedia card micro type, a card type memory (for example, SD or XD memory), a RAM (Random Access Memory), SRAM (Static Random Access Memory), ROM (Read Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM A disk, and / or an optical disk. The mobile terminal 100 may operate in association with a web storage that performs a storage function of the memory 160 on the Internet.

The interface unit 170 serves as a path for communication with all external devices connected to the mobile terminal 100. The interface unit 170 receives data from an external device or supplies power to each component in the mobile terminal 100 or transmits data to the external device. For example, a wired / wireless headset port, an external charger port, a wired / wireless data port, a memory card port, a port for connecting a device having an identification module, an audio I / O port, A video input / output (I / O) port, an earphone port, and the like may be included in the interface unit 170.

The identification module is a chip for storing various information for authenticating the use right of the mobile terminal 100 and includes a user identification module (UIM), a subscriber identity module (SIM), a general user authentication module A Universal Subscriber Identity Module (USIM), and the like. Devices with identification modules (hereinafter referred to as "identification devices") can be manufactured in a smart card format. Accordingly, the identification device can be connected to the terminal 100 through the port.

The interface unit 170 may be a passage through which power from the cradle is supplied to the mobile terminal 100 or 100 when the mobile terminal 100 or 100 is connected to an external cradle, or by a user. Various command signals input from the cradle may be passages to the mobile terminal 100. The various command signals or the power source inputted from the cradle may be operated as a signal for recognizing that the mobile terminal 100 is correctly mounted on the cradle.

The controller 180 typically controls the overall operation of the mobile terminal 100. For example, voice communication, data communication, video communication, and the like. The control unit 180 may include a multimedia module 181 for multimedia playback. The multimedia module 181 may be implemented in the control unit 180 or may be implemented separately from the control unit 180. [

The controller 180 may perform a pattern recognition process for recognizing handwriting input or drawing input performed on the touch screen as characters and images, respectively.

The power supply unit 190 receives external power and internal power under the control of the controller 180 and supplies power necessary for operation of the respective components.

The various embodiments described herein may be embodied in a recording medium readable by a computer or similar device using, for example, software, hardware, or a combination thereof.

According to a hardware implementation, the embodiments described herein include application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), and the like. It may be implemented using at least one of processors, controllers, micro-controllers, microprocessors, and electrical units for performing other functions. The described embodiments may be implemented by the controller 180 itself.

According to the software implementation, embodiments such as the procedures and functions described herein may be implemented as separate software modules. Each of the software modules may perform one or more of the functions and operations described herein. Software code can be implemented in a software application written in a suitable programming language. The software code is stored in the memory 160 and can be executed by the control unit 180. [

2A is a perspective view of a mobile terminal 100 according to an embodiment of the present invention. 2B is a rear perspective view of the mobile terminal 100 shown in FIG. 2A.

1, 2A and 2B, the mobile terminal 100 includes a bar-shaped terminal body. However, the present invention is not limited thereto, and can be applied to various structures such as a slide type, a folder type, and a swing type in which two or more bodies are coupled to be movable relative to each other. Further, the mobile terminal 100 described herein may be any portable electronic device having a camera and flash, such as a mobile phone, a smart phone, a notebook computer, a digital broadcast terminal, a PDA Personal Digital Assistants), PMO (Portable Multimedia Player), and the like.

The terminal body includes a case (which may be referred to as a casing, a housing, a cover, and the like) that forms an appearance. The case includes a battery case 103 covering a front case 101 and a surface opposite to the front case 101 and a rear case 102 disposed between the front case 101 and the battery cover 103 Can be distinguished. Various electronic components are installed in a space formed between the front case 101 and the rear case 102. [ The cases may be formed by injection molding a synthetic resin, or may be formed to have a metal material such as stainless steel (STS) or titanium (Ti) or the like.

The front surface of the terminal body includes a display unit 151, a first sound output unit 152, a signal input unit 120, and a front camera unit 121.

The display unit 151 includes an LCD (Liquid Crystal Display) module, an OLED (Organic Light Emitting Diodes) module, and an e-paper for visually expressing information. The display unit 151 may include touch sensing means for inputting data by a touch method. Hereinafter, the display unit 151 including the touch sensing unit will be referred to as a 'touch screen'. If there is a touch on any one place on the touch screen, contents corresponding to the touched position are input. The content input by the touch method may be a letter or a number, an instruction in various modes, a menu item which can be designated, and the like. The touch sensing means is formed to be translucent so that the display units 151 and 151 can be seen, and may include a structure for increasing the visibility of the touch screen in a bright place. According to FIG. 2A, the touch screen occupies most of the front surface of the front case 101.

The first sound output unit 152 may be implemented as a receiver for delivering a call sound to a user's ear or a loud speaker for outputting various alarm sounds or multimedia playback sounds.

The front camera unit 121 processes an image frame such as a still image or a moving image obtained by the image sensor in the video communication mode or the photographing mode. The processed image frame can be displayed on the display unit 151. [

The image frame processed by the front camera 121 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. [ The front camera unit 121 may be provided in two or more depending on the use environment.

The signal input unit 230 is operated to receive a command for controlling the operation of the mobile terminal 100, and may include a plurality of input keys. The input keys may also be referred to as a manipulating portion and may be employed in any manner as long as the user has a tactile sense and operates in a tactile manner.

For example, a dome switch or touch screen capable of receiving a command or information by a push or touch operation of a user, a touch pad, or a wheel, a jog type or a joystick for rotating a key . The contents input by the signal input unit 230 can be variously set. For example, to enter start, end, scroll, and the like.

A side key 132, an interface unit 170, and an acoustic input unit 122 are disposed on a side surface of the rear case 102.

The side key 132 may be collectively referred to as an operation unit and is capable of receiving a command for controlling the operation of the mobile terminal 100. The side key 132 may be employed in any manner as long as the user is operating in a tactile manner with a tactile impression. The contents input by the side key 132 can be variously set. For example, by the side key 132, commands such as control of the image input unit, adjustment of the size of the sound output from the sound output unit 152, or switching to the touch recognition mode of the display unit 151 can be received have.

The sound input unit 122 may be implemented, for example, in the form of a microphone to receive a user's voice, other sounds, or the like.

The interface unit 170 is a channel for allowing the mobile terminal 100 related to the present invention to exchange data with an external device. For example, the interface unit 170 may be a wired or wireless connection terminal for connecting to an earphone, a port for short-range communication (for example, an IrDA port, a Bluetooth port, a wireless LAN port Wireless LAN Port) or the like, or power supply terminals for supplying power to the mobile terminal 100. The interface unit 170 may be implemented as a socket for receiving an external card such as a SIM (Subscriber Identification Module) or a UIM (User Identity Module) or a memory card for storing information.

A power supply unit 190 and a rear camera unit 121 'are disposed on the rear surface of the terminal body.

A flash 123 is disposed adjacent to the rear camera unit 121 '. The flash 123 illuminates the subject toward the subject when the subject is photographed by the rear camera unit 121 '.

A mirror 224 may be disposed adjacent to the flash 224. The mirror allows the user to illuminate the user's own face or the like in the case where the user intends to photograph the user himself / herself (self-photographing) using the rear camera unit 121 '.

The rear camera unit 121 'may have a photographing direction substantially opposite to that of the front camera unit 121 disposed on the front side and may be a camera having different pixels from the front camera unit 121.

For example, the front camera unit 121 has low pixels so that it is easy to capture a face of a user in the case of a video call or the like and send it to the other party. The rear camera unit 121 ' It is preferable to have a high pixel because it is often not transmitted. The front and rear camera units 121 and 121 'may be installed in the terminal body to be rotatable or pop-up.

The battery supplies power to the mobile terminal 100. The battery may be built in the terminal body or may be configured to be directly removable from the outside of the terminal body.

As described in the background technology of the present invention, recently developed and released mobile terminals are equipped with components such as a central processing unit (AP), a power management chip (PMIC), etc., to perform various services. Research is being conducted to improve the problem of deterioration of terminal performance due to overheating of the components. Hereinafter, the mobile terminal structure having a structure capable of dissipating heat of the heat generating element to the outside of the terminal quickly and quickly will be described in more detail.

3 is an exploded view of the mobile terminal 100 of FIG. 2A viewed from the front.

Referring to FIG. 3, the window 150 is coupled to one surface of the front case 101. The window 150 is made of a material through which light can pass, for example, a transparent synthetic resin, tempered glass, and the like. However, the window 150 may include a portion through which light cannot pass. The part where the light cannot pass may be implemented by separately covering the window 150 with the pattern film. The pattern film may be made so that the center is transparent and the edge is opaque.

The display 151 may be mounted on the rear surface of the window 150. A portion of the window 150 through which light is transmitted may have an area corresponding to the display 151. Accordingly, the user can recognize the time information output from the display 151 from the outside.

The rear case 102 may be equipped with first and second printed circuit board assemblies. The first and second printed circuit board assemblies may be configured as an example of the controller 180 (see FIG. 1) for operating various functions of the mobile terminal 100. In this embodiment, the printed circuit board assembly is provided with a plurality, but the present invention is not limited thereto. That is, the printed circuit board assembly may be provided as one.

As illustrated, the display 151, the audio output device 152a, the camera 121a, and the like may be mounted on the first printed circuit board assembly 210. The sound output element 152a may be, for example, a speaker or a receiver.

The second printed circuit board assembly 220 is electrically connected to the first printed circuit board assembly 210 to operate various functions of the mobile terminal 100 together with the first printed circuit board assembly 210.

The first and / or second printed circuit board assembly may be equipped with electronic devices and semiconductor packages corresponding to various functions of the terminal. The electronic device or semiconductor package may be, for example, an application processor (AP), a pulse amplitude modulation module (Pam), a power management integrated circuit (PMIC), or the like. . As the performance of these electronic devices and semiconductor packages improves, power consumption increases and more heat is generated. Hereinafter, a housing structure capable of efficiently transferring heat to the heat dissipation unit in the electronic device and the semiconductor package (hereinafter referred to as a “heating device”) will be described in more detail.

4A is a cross-sectional view of the housing 300 shown in FIG. 3 taken along the line V-V, and FIG. 4B is a cross-sectional view showing the structure of the housing 300 according to another embodiment of the present invention.

Referring to FIG. 4A, the heating element 221 is mounted on each side of the printed circuit board assembly. The heat pipe 222 is disposed adjacent to the heat generating element 221.

The heat pipe 222 may be bent to contact one surface of the heating element 221 or to contact at least two surfaces of the heating element 221. Although the heat pipe 222 is illustrated in a cylindrical shape in FIG. 4A, the heat pipe 222 is illustrated in a cylindrical shape for convenience of expression, and the heat pipe 222 may be manufactured in other shapes such as a rectangular parallelepiped.

The housing 300 may be mounted to surround the heat generating element 221 and the heat pipe 222. The housing 300 includes a first portion 310 surrounding the heat generating element 221 and a second portion 320 connected to the heat pipe 222.

The first portion 310 includes sidewalls surrounding side surfaces of the heating element 221 and a cover coupled to an upper portion of the sidewalls and covering the top surface of the heating element 221. The side walls and the cover can be fabricated integrally. The first portion 310 may have a structure in which a groove into which the heat generating element 221 is inserted is formed in a member having high thermal conductivity.

The second portion 320 protrudes from the first portion 310. The second portion 320 protrudes toward the heat pipe 222 so that a portion thereof is connected to the heat pipe 222. The second portion 320 may include a bent portion bent to surround the heat pipe 222 so that the heat of the first portion 310 can be better transferred to the heat pipe 222.

The heat generating element 221 and the heat pipe 222 are thermally connected by the housing 300, and when connected, the heat generating element 221 is blocked from the outer space of the housing 300. That is, most of the heat generated from the heat generating element 221 is transferred to the housing 300, and the heat transferred to the housing 300 is transferred to the heat pipe 222 again.

A thermal interface material 311 may be disposed between the first portion 310 and the heat generating element 221. The thermal interface material 311 reduces contact thermal resistance between the heating element 221 and the housing 300 to facilitate thermal conduction. The thermal interface material 311 may be, for example, copper or a graphite sheet. The thermal interface material 311 may be attached to an inner surface of the first portion 310. In addition, the thermal interface material 311 may be a thermal grease interposed between the heating element 221 and the first portion 310.

A thermal interface material 321 may be disposed between the second portion 320 and the heat pipe 222. The thermal interface material 321 reduces contact thermal resistance between the heating element 221 and the housing 300 to facilitate thermal conduction. The thermal interface material 321 may be, for example, copper or a graphite sheet. The thermal interface material may be attached to an inner surface of the second portion 320.

On the outer surface of the housing 300, a member having a low thermal conductivity may be mounted or a heat insulating member may be coated. As described above, when the heat insulating member is coated on the outer surface of the housing 300, heat generated from the heat generating element 221 may be prevented from affecting other elements around.

Referring to FIG. 4B, the housing 300 may include a first portion 310 surrounding the heat generating element 221 and a plurality of second portions 320 protruding from the first portion 310.

5A is a conceptual diagram illustrating that heat is released through the heat dissipation unit 230, and FIG. 5B is a conceptual diagram illustrating that heat is emitted through the fan.

Referring to FIG. 5A, the heat generating element 221 and the heat pipe 222 are thermally connected by the housing 300, and at least a part of the heat pipe 222 is connected to the heat dissipation unit 230. The heat dissipation unit 230 may be a heat dissipation sheet made of copper, graphite, aluminum, or the like. As shown, the heat pipe 222 is a first portion extending in length toward one side of the mobile terminal 100 and the length is bent at one end of the first portion and parallel to the one side adjacent to the one side It may be made of a second portion extending. That is, the heat pipe 222 may be formed in the 'b' shape. Since the structure of the heat pipe 222 as described above can widen the contact area between the heat dissipation sheet and the heat pipe 222, the heat dissipation efficiency can be improved. The heat pipe 222 may be formed in a 'c' shape as shown in Figure 5b.

Referring to FIG. 5B, a fan 231 may be connected to the heat pipe 222. The fan 231 may be a micro fan, a piezo fan, or the like. A thermal interface material may be attached between the fan 231 and the heat pipe 222 to reduce contact thermal resistance.

6A, 6B, and 6C are embodiments of the present invention for cooling the heat pipe 222 by convection. FIG. 6A is a structure for inducing natural convection, and FIGS. 6B and 6C are structures forcibly causing convection.

Referring to FIG. 6A, a plurality of holes 103a may be formed in a case adjacent to the heat pipe 222 along the length direction of the heat pipe 222. One side of the terminal may be formed with a hole 104 for connecting a USB or the like. The heated air inside the terminal is discharged to the outside of the terminal through the plurality of holes 103a and the USB connection hole 104.

Referring to FIG. 6B, a fan 231 is mounted on one surface of the terminal, and air inside the terminal flows through the fan 231. The air introduced through the fan 231 passes near the heat pipe 222 and receives heat from the heat pipe 222. The heated air is then discharged to the outside of the terminal through the USB hole 104 formed on one side of the terminal.

Referring to FIG. 6C, a motor 232 may be mounted inside the terminal to be adjacent to the heat pipe 222. The motor 232 is disposed to be adjacent to the terminal case 103 to vibrate the terminal case 103. Vibration of the terminal case 103 flows air inside the terminal. Air inside the terminal is discharged to the outside of the terminal through the USB hole 104 formed on one side of the terminal.

7A to 7P are embodiments of the present invention in which the heat pipe 222 and the heat generating element 221 are differently arranged. As shown, the mobile terminal 100 is equipped with a printed circuit board (220, PCB), the printed circuit board 220, a central processing unit (AP, Application Processor), a pulse amplitude modulation module (PAM, Pulse Amplitude Modulation) ), A heat generating element 221 such as an integrated power management circuit (PMIC) is mounted. The heat pipe 222 is disposed adjacent to the heat generating element 221. The heat generating element 221 and the heat pipe 222 are thermally connected by the housing 300. Space where the battery 190 is mounted

Although the housing 300 is not illustrated in FIGS. 7A to 7P, the heating element 221 and the heat pipe 222 are surrounded by the housing 300 having the same shape as that of FIG. 4A or 4B. When three or more heat generating elements 221 are connected to the heat pipe 222, the heat generating elements 221 and the heat pipes 222 are connected by a plurality of housings 300, or a first portion of the housing 300 ( 310 and / or number of second portions 320 may be added.

7A to 7P, the upper part of the drawing is viewed as an upper part of the terminal and the lower part of the drawing as a lower part of the terminal. That is, when the user calls with the mobile terminal 100, the portion corresponding to the upper part of the figure is disposed to face upward. The vertical direction of the terminal is called a longitudinal direction, and the direction perpendicular thereto is called a width direction. An arrow marked on the heat pipe 222 indicates a path through which heat progresses.

Referring to FIG. 7A, the printed circuit board 220 and the battery 190 are disposed on one side of the terminal, and the heat pipe 222 is disposed to be adjacent to the other side of the terminal. The printed circuit board 220 is disposed above the terminal and the battery 190 is disposed below the terminal.

Referring to FIG. 7B, the printed circuit board 220 and the battery 190 are disposed on one side of the terminal, and the heat pipe 222 is disposed to be adjacent to the other side of the terminal. The printed circuit board 220 is disposed above the terminal and the battery 190 is disposed below the terminal. The heat pipe 222 is bent in a 'b' shape to extend the length to the printed circuit board 220, one end of the width direction of the terminal (hereinafter referred to as the 'width portion') of the heat pipe 222 is a printed circuit It is surrounded by the heating elements 221 mounted on the substrate 220.

Referring to FIG. 7C, the printed circuit board 220 is disposed on an upper portion of the terminal, and the battery 190 is disposed on one side of the lower portion of the terminal. The heat pipe 222 is bent in a 'b' shape. The width portion is disposed between the printed circuit board 220 and the battery 190, and the longitudinal portion (hereinafter, referred to as a “length portion”) of the terminal of the heat pipe 222 is disposed to be adjacent to the other side of the terminal.

Referring to FIG. 7D, the battery 190 is disposed under the terminal. The heat pipe 222 is bent in a 'b' shape, the width portion is disposed above the terminal, the length portion is disposed to be adjacent to one side of the terminal. The printed circuit board 220 is disposed between the heat pipe 222 and the battery 190.

Referring to FIG. 7E, the printed circuit board 220 and the battery 190 are disposed on one side of the terminal, and the heat pipe 222 is disposed to be adjacent to the other side of the terminal. The printed circuit board 220 is disposed under the terminal and the battery 190 is disposed above the terminal.

Referring to FIG. 7F, the printed circuit board 220 and the battery 190 are disposed at one side of the terminal, and the heat pipe 222 is disposed to be adjacent to the other side of the terminal. The printed circuit board 220 is disposed under the terminal and the battery 190 is disposed above the terminal. The heat pipe 222 is bent in a '' 'shape. The width portion is disposed between the printed circuit board 220 and the battery 190, and the longitudinal portion of the terminal (hereinafter, referred to as the “length portion”) of the heat pipe 222 is disposed to be adjacent to the other side of the terminal. It is bent in shape to extend the length to the printed circuit board 220, one end of the width portion is surrounded by the heating elements 221 mounted on the printed circuit board 220.

Referring to FIG. 7G, the printed circuit board 220 is disposed under the terminal, and the battery 190 is disposed on one side of the upper portion of the terminal. The heat pipe 222 is bent in the form of "". The width portion is disposed between the printed circuit board 220 and the battery 190 and the length portion is disposed to be adjacent to the other side of the terminal.

Referring to FIG. 7H, the battery 190 is disposed above the terminal. The heat pipe 222 is bent in a '' 'shape, the width portion is disposed below the terminal, the length portion is disposed adjacent to one side of the terminal. The printed circuit board 220 is disposed between the heat pipe 222 and the battery 190.

Referring to FIG. 7I, the battery 190 is disposed at one side of the terminal, and the heat pipe 222 is disposed at the other side. The printed circuit board 220 is disposed between the battery 190 and the heat pipe 222.

Referring to FIG. 7J, the battery 190 is disposed at one side of the terminal, and the printed circuit board 220 is disposed at the other side. The heat pipe 222 is disposed between the battery 190 and the printed circuit board 220.

Referring to FIG. 7K, the battery 190 is disposed at one side of the terminal, and the printed circuit board 220 is disposed at the other side. The heat pipe 222 is disposed under the terminal. At this time, the heat pipe 222 transfers heat from one side to the other side along the lower surface of the terminal.

Referring to FIG. 7L, the battery 190 is disposed at one side of the terminal, and the printed circuit board 220 is disposed at the other side. The heat pipe 222 is disposed above the terminal. At this time, the heat pipe 222 transfers heat from one side to the other side along the upper surface of the terminal.

Referring to FIG. 7M, the battery 190 is disposed at one side of the terminal. The heat pipe 222 is bent in a '' 'shape, and the width portion is disposed under the terminal and the length portion is adjacent to the other side of the terminal. The printed circuit board 220 is disposed between the battery 190 and the heat pipe 222.

Referring to FIG. 7N, the battery 190 is disposed at one side of the terminal. The heat pipe 222 is bent in a 'b' shape, the width portion is disposed above the terminal, the length portion is disposed adjacent to the other side of the terminal. The printed circuit board 220 is disposed between the battery 190 and the heat pipe 222.

Referring to FIG. 7O, the battery 190 is disposed at one side of the terminal. The printed circuit board 220 is disposed on the other side of the terminal. The heat pipe 222 is formed in a 'ㅗ' shape, the width portion is disposed under the terminal, the length portion is disposed between the printed circuit board 220 and the battery 190.

Referring to FIG. 7P, the battery 190 is disposed at one side of the terminal. The printed circuit board 220 is disposed on the other side of the terminal. The heat pipe 222 is formed in a 'TT' shape, a width portion is disposed above the terminal, and a length portion is disposed between the printed circuit board 220 and the battery 190.

8A and 8B are embodiments of the present invention showing a structure capable of reducing the influence of the directionality that the heat pipe 222 receives.

Referring to FIG. 8A, batteries 190 are disposed on both sides of the terminal. As shown, the heat pipe 222 is in the form of 'ㅗ' (shown in dashed lines), and the printed circuit board 220 is in the form of 'TT' (shown in solid lines).

The heat pipe 222 may be formed by overlapping the first heat pipe 222 having a '-' shape and the second heat pipe 222 having a '|' shape. In this case, the heating element 221 and the '-' type heat pipe 222 is connected to the housing 300, the 'ㅣ' type heat pipe 222 may be disposed to contact one surface of the housing 300. have.

A thermal interface material may be attached to a contact surface of the housing 300 and the heat pipe 222 having a '|' shape. The heating elements 221 are disposed in the center of the terminal in the longitudinal direction of the terminal.

The first heat pipe 222 or the second heat pipe 222 may be disposed to be symmetric about the housing 300. For example, as shown, the first heat pipe 222 includes first and second extensions extending in opposite directions with respect to the housing 300.

Referring to FIG. 8B, batteries 190 are disposed on both sides of the terminal. As shown, the heat pipe 222 is in the form of 'ㅛ' (shown in dashed lines), and the printed circuit board 220 is in the form of 'TT' (shown in solid lines).

The heat pipe 222 may include third and fourth heat pipes 222 disposed in the longitudinal direction and a first heat pipe 222 disposed in the width direction. As illustrated, the housing (arranged in the width direction of the terminal) connecting the third and fourth heat pipes to the heat generating element 221 may include two second portions 320. As illustrated, a housing (arranged in the longitudinal direction of the terminal) connecting the first heat pipe and the heating element 221 may include a plurality of first portions 310. In addition, the housing 300 may be formed to include a plurality of first and second portions to surround all of the first heat pipe, the third heat pipe, the fourth heat pipe, and the heat generating elements 221.

According to the present invention having the configuration described above, the heat pipe 222 for transmitting the heat generated from the heat generating element 221 to the heat dissipating unit 230 is mounted inside the mobile terminal 100, the heat generating element 221 The housing 300 for facilitating thermal conduction between the heat pipe 222 and the heat pipe 222 is provided, and thus the mobile terminal 100 for dissipating heat from the heat generating element 221 to the outside faster can be provided.

In addition, the structure and arrangement of the heat pipe 222 may be variously modified to minimize the influence of the directionality of the heat pipe 222, and thus the mobile terminal 100 may be provided having a structure that maximizes a heat radiation effect.

In addition, by forming a hole in the case of the mobile terminal 100 to naturally convection the air inside the terminal or to force the convection by vibrating the terminal case, the heat of the heating element 221 is not only by conduction but also by convection It can also be discharged to the outside by more efficient cooling can be achieved.

The mobile terminal 100 described above is not limited to the configuration and the method of the embodiments described above, but the embodiments may be configured by selectively combining all or a part of each embodiment so that various modifications can be made .

Claims (10)

A heat pipe receiving heat from a heat generating element inside the mobile terminal and transferring the heat to a heat dissipation unit; And
It includes a housing for thermally connecting the heat generating element and the heat pipe,
The housing includes:
A first portion including sidewalls surrounding the heating element and a cover coupled to the sidewalls and covering the heating element; And
And a second portion protruding from the first portion toward the heat pipe and at least partially connected to the heat pipe. The method of claim 1,
The second portion,
Mobile terminal, characterized in that it comprises a bent to be wrapped around the heat pipe. The method of claim 1,
And a thermal interface material disposed between the first portion and the heating element. The method of claim 3,
The thermal interface material is a mobile grease, characterized in that the thermal grease (thermal grease) interposed between the first portion and the heating element. 3. The method of claim 2,
And a thermal interface material mounted to the bent portion to reduce contact thermal resistance between the housing and the heat pipe. The method of claim 1,
The heat pipe includes:
A first portion extending in length toward one side of the mobile terminal; And
And a second portion that is bent at one end of the first portion and extends in length to be parallel to the one side adjacent to the one side. The method according to claim 6,
And a plurality of holes are formed in the case adjacent to the second part along the length direction of the second part. The method according to claim 6,
The mobile terminal further comprises a motor disposed adjacent to the one side to vibrate the one side to flow the air around the heat pipe. The method of claim 1,
The heat pipe includes:
And first and second extensions extending in lengths in opposite directions from the housing so as to be symmetric with respect to the housing. The method of claim 1,
One side of the mobile terminal is formed with a hole through which the air inside the mobile terminal can be discharged, the other side is a mobile terminal, characterized in that the fan for flowing the air inside the mobile terminal is mounted.

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