KR101613926B1 - Mobile terminal - Google Patents

Abstract

The present invention relates to an acoustic filter, comprising: a main body having a window provided with a sound hole and having an acoustic output element built in to face the acoustic hole; an acoustic filter made of a flat plate and filtering the inflow of foreign matter through the acoustic hole; Wherein the acoustic filter is mounted in a central region so that the acoustic filter is inserted and the edge region is formed to cover a portion of the window defining the opening of the acoustic hole.

Description

[0001] MOBILE TERMINAL [0002]

The present invention relates to a mobile terminal having an audio output means capable of outputting sound.

The terminal can move And can be divided into a mobile / portable terminal and a stationary terminal depending on whether the mobile terminal is a mobile terminal or a mobile terminal. The mobile terminal can be divided into a handheld terminal and a vehicle mount terminal according to whether the user can directly carry the mobile terminal.

Such a terminal has various functions, for example, in the form of a multimedia device having multiple functions such as photographing and photographing of a moving picture, reproduction of a music or video file, reception of a game and broadcasting, etc. .

In order to support and enhance the functionality of such terminals, it may be considered to improve the structural and / or software parts of the terminal.

As an improvement of the structural part of the terminal, an audio output means for enhancing the multimedia function of the mobile terminal as the sound is outputted more excellent can be considered.

The present invention is to provide a mobile terminal which is formed in a different form from the prior art and is equipped with an acoustic filter having more through holes.

The present invention is also intended to provide an audio output means of a mobile terminal in which the amount of foreign matter adhering to the space in which the acoustic filter is mounted is reduced.

In order to solve the above problems, a mobile terminal according to an embodiment of the present invention includes a body having a window provided with a sound hole and having an acoustic output element built in such that the sound hole faces the sound hole, An acoustic filter for filtering an inflow of a foreign substance through the hole; and an acoustic filter mounted on the acoustic filter at a central region for inserting the acoustic filter into the acoustic hole, and an edge region formed to cover a portion of the window defining the opening of the acoustic hole Lt; RTI ID = 0.0 > a < / RTI >

In one embodiment of the present invention, the acoustic filter is made of a metal material so as to be welded to the acoustic filter support unit, and a plurality of through holes are formed in the main surface of the acoustic filter. The major surface of the acoustic filter may have at least one of a shape and a size that is the same as the cross section of the acoustic hole.

As an example related to the present invention, a discharge hole is formed in the central area so as to discharge sound output from the sound output element. The acoustic filter support unit may be formed in the central region and include a mounting portion to which the acoustic filter is mounted. And the plurality of mounting portions are disposed to be spaced apart from each other in the discharge hole.

As an example related to the present invention, the mounting portion protrudes from the edge region, and at least a part thereof is inserted into the acoustic hole. The acoustic filter support unit is made of a metal material, and the mounting portion is formed to be in surface contact with the acoustic filter, and the acoustic filter can be welded to the mounting portion.

According to another aspect of the present invention, there is provided a portable terminal including a main body having a built-in sound output device, a terminal case having a sound hole for emitting sound output from the sound output device on one surface thereof, And an acoustic filter support unit which is formed such that the acoustic filter is mounted in a central region so that the acoustic filter is inserted into the acoustic hole and the edge region covers a portion of the case defining the opening of the acoustic hole The mobile terminal is started. The central region may protrude from the edge region, and at least a portion thereof may be inserted into the acoustic hole.

The mobile terminal according to at least one embodiment of the present invention configured as described above reduces the attachment space of the foreign matter in the depth direction of the acoustic hole through the acoustic filter inserted in the acoustic hole. Through this, the sound output means of the mobile terminal is realized in which the amount of foreign matter adhered is reduced.

Further, in the present invention, a larger number of through holes can be formed in an acoustic filter for closing acoustic holes through acoustic filters formed in a flat plate. As a result, sound emission is smoothed even in a sound hole having a small area.

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.

The suffix "module" and " part "for the components 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), navigation and the like. However, it will be understood by those skilled in the art that the configuration according to the embodiments described herein may be applied to a fixed terminal such as a digital TV, a desktop computer, and the like, unless the configuration is applicable only to a mobile terminal.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.

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, and a mobile terminal 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 broadcast signals 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 can 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 (DVF-H) And a Digital Broadcasting System (ISDB-T) (Integrated Services Digital Broadcast-Terrestrial). 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, 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 an image frame such as a still image or 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 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 / static), a jog wheel, a jog switch, and the like.

The sensing unit 140 senses the current state 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 or absence of user contact, the orientation of the mobile terminal, 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 is possible to sense whether the slide phone is opened or closed. It is also possible to sense whether the power supply unit 190 is powered on, whether the interface unit 170 is connected to an external device, and the like. 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 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 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display display, and a 3D display.

Some of these displays may be transparent or light transmissive so that they can be seen through. This can be referred to as a transparent display, and a typical example of the transparent display is TOLED (Transparent OLED) and 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, in the mobile terminal 100, a plurality of display portions may be spaced apart from one another or may be disposed integrally with each other, 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. Thus, the control unit 180 can know which area of the display unit 151 is touched or the like.

Referring to FIG. 1, a proximity sensor 141 may be disposed in an inner region of the mobile terminal or in the vicinity of the touch screen, which is surrounded by 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 type photoelectric sensor, a direct reflection type photoelectric sensor, a mirror reflection type photoelectric sensor, a high frequency oscillation type 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 recognizing that the pointer is positioned on the touch screen while the pointer is not in contact with the touch screen is referred to as "proximity touch & The act of actually touching the pointer on the screen is called "contact touch. &Quot; 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 audio 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 mode, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, 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 that occur in the mobile terminal 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. A typical example of the haptic effect generated by the haptic module 154 is vibration. 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 include a pin arrangement vertically moving with respect to the contact skin surface, a spraying force or a suction force of the air through the injection port or the suction port, a touch on the skin surface, contact with an electrode, And various tactile effects such as an effect of reproducing a cold sensation using an endothermic or exothermic element can be generated.

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.

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

The controller 180 typically controls the overall operation of the mobile terminal. 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 may be implemented as application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays May be implemented using at least one of a processor, controllers, micro-controllers, microprocessors, and other electronic units for performing other functions. In some cases, The embodiments described may be implemented by the control unit 180 itself.

According to a software implementation, embodiments such as the procedures and functions described herein may be implemented with 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 according to an embodiment of the present invention.

The disclosed mobile terminal 200 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, a swing type, and a swivel type in which two or more bodies are relatively movably coupled.

The body includes a case (a casing, a housing, a cover, and the like) which forms an appearance. In this embodiment, the case may be divided into a front case 201 and a rear case 202. [ Various electronic components are embedded in the space formed between the front case 201 and the rear case 202. [ At least one intermediate case may be additionally disposed between the front case 201 and the rear case 202. [

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.

A display unit 251, an audio output module 260, a camera 221, user input units 231 and 232, and the like may be disposed in the front body 201,

The display unit 251 occupies most of the main surface of the front case 201. The sound output module 260 and the camera 221 are disposed in an area adjacent to one end of the both ends of the display unit 251.

Various kinds of time information can be displayed on the display unit 251. These pieces of information can be displayed in the form of letters, numbers, symbols, graphics, or icons.

At least one of the letters, numbers, symbols, graphics, or icons may be displayed in a predetermined arrangement for inputting such information, thereby being implemented as a keypad. Such a keypad may be called a so-called " soft key ".

The display unit 251 may be operated as an entire area or divided into a plurality of areas. In the latter case, the plurality of areas can be configured to operate in association with each other.

The user input unit 230 is operated to receive a command for controlling the operation of the portable terminal 200 and may include a plurality of operation units 231 and 232. The operation units 231 and 232 may be collectively referred to as a manipulating portion and may be employed in any manner as long as the user operates in a tactile manner.

The contents inputted by the first or second operation units 231 and 232 can be variously set. For example, the first operation unit 231 receives commands such as start, end, scroll, and the like, and the second operation unit 232 controls the magnitude of the sound output from the sound output module 260, To the touch recognition mode of the touch screen.

Referring to this figure, a wired / wireless headset port 271 and a wired / wireless data port 272 may be disposed on one side of the mobile terminal. The ports 271 and 272 are configured as an example of the interface 170 (see FIG. 1).

2B is a rear perspective view of the mobile terminal shown in FIG. 2A.

Referring to FIG. 2B, a camera 221 'may be further mounted on the rear surface of the terminal body, that is, the rear case 202. The camera 221 'may have a photographing direction substantially opposite to the camera 221 (see FIG. 2A), and may be a camera having different pixels from the camera 221.

For example, the camera 221 has a low pixel so that it is easy to capture a face of a user in the case of a video call or the like and transmits the face to the other party, and the camera 221 ' It is preferable to have a large number of pixels. The cameras 221 and 221 'may be installed in the terminal body such that they can be rotated or pop-up.

A flash 223 and a mirror 224 are additionally disposed adjacent to the camera 221 '. The flash 223 illuminates the subject when the subject is photographed by the camera 221 '. The mirror 224 allows the user to illuminate the user's own face or the like in the case where the user intends to photograph (self-photograph) himself / herself using the camera 221 '.

An acoustic output module may be additionally disposed on the rear surface of the terminal body. The sound output module may implement a stereo function together with the sound output module 260 (see FIG. 2A) of the front case, and may be used for implementing a speakerphone mode during a call.

An antenna for receiving a broadcast signal may be additionally disposed on the side of the terminal body in addition to an antenna for a call or the like. An antenna constituting a part of the broadcast receiving module 111 (see FIG. 1) can be installed to be able to be drawn out from the terminal body.

Referring to this figure, a terminal body may include a microphone 222, an interface 270, and the like. A microphone 222 is disposed in an area adjacent to the one end of the display unit where the acoustic output module 260 is disposed.

A user input unit 232, a connection port 273, and the like may be disposed on the side surfaces of the front case 201 and the rear case 202.

The connection port 273 receives data from an external device or receives power from the external device and transfers the data to each component in the mobile terminal 200 or allows data in the mobile terminal 200 to be transmitted to an external device. The connection port 273 may be configured as an example of the interface 170 (see FIG. 1).

A power supply unit 290 for supplying power to the mobile terminal 200 is mounted on the terminal body. The power supply unit 290 may be built in the terminal body or may be detachable from the outside of the terminal body.

Hereinafter, the detailed structure of the sound output module 260 will be described with reference to FIGS. 3 to 5. FIG. Fig. 3 is an exploded view of the mobile terminal of Fig. 2a, Fig. 4 is an enlarged view of the acoustical output module 260 of Fig. 3, and Fig. 5 is a partial sectional view taken along line V-V of Fig.

A window 251b is coupled to one surface of the front case 201. The window 251b is made of a material through which light can be transmitted, for example, a light transmitting synthetic resin, a tempered glass, or the like. However, the window 251b may include a portion that can not transmit light.

A display module 251a may be mounted on the rear surface of the window 251b. The portion of the window 251a through which light is transmitted may have an area corresponding to the display module 251a. Accordingly, the user can recognize the time information output from the display module 251a from the outside.

A touch sensor may be mounted on the window 251b. The touch sensor is formed to sense a touch input and is made of light transmissive. The touch sensor is mounted on the rear surface of the window 251b and may be configured to convert a change in capacitance or the like occurring in a specific portion of the window 251b into an electrical input signal.

An acoustic hole 261 corresponding to the sound output module 260 (see FIG. 2A) and an image window 221a corresponding to the camera 221 may be formed at one end of the window 251b. The image window 221a may be formed of a material through which light can be transmitted, or may be integrated with the window 251b to be a part of the window 251b.

The circuit board 217 may be mounted on the rear case 202. [ The circuit board 217 may be configured as an example of a controller 180 (see FIG. 1) for operating various functions of the mobile terminal. As shown in the figure, the acoustic output element 262, the camera 221, and the like can be mounted on the circuit board 217.

The acoustic output element 262 is disposed to face the acoustic hole 261 at a position corresponding to the acoustic hole 261, and may be, for example, a speaker, a receiver, or the like.

The front case 201 is formed in the through hole 263 at a position corresponding to the acoustic hole 261. The sound output from the acoustic output element 262 through the through hole 263 and the acoustic hole 261 can be emitted to the outside.

Referring to these drawings, an acoustic filter 264 is mounted in the acoustic hole 261 to filter the foreign matter through the acoustic hole 261. The acoustic filter 264 is formed of a flat plate and a plurality of through holes may be formed on the main surface.

The acoustic filter 264 is mounted to the acoustic filter support unit 265. The acoustic filter support unit 265 includes a central region 265a and an edge region 265b.

A discharge hole 266 is formed in the central region 265a to discharge sound output from the sound output element 262. [

The edge region 265b is formed to surround the central region 265a. The edge region 265b is seated in a portion of the front case 201 that defines the opening of the through hole 263 and can be mounted to a portion that defines the opening of the through hole 263 through a double- . However, the present invention is not limited thereto. For example, the edge region 265b may be mounted on a window through a double-sided tape or the like.

The acoustic filter 264 is mounted in the central area 265a so that the acoustic filter 264 is inserted into the acoustic hole 261 and the edge area 265b is formed in the window 251b in the vicinity of the acoustic hole 261 And is arranged to cover the portion 267 defining the opening. An acoustic filter 264 made of a flat plate is protruded from the edge region 265b of the acoustic filter support unit 265 by a thickness and inserted into the acoustic hole 261. [ The inner space of the acoustic hole 261 has a length corresponding to the thickness of the window 251b. However, as shown in FIG. 5, the acoustic output means of the present invention reduces the length of the inner space of the acoustic hole 261, It is difficult for the foreign matter to adhere to the inner space of the acoustic hole 261 through the through hole 261. [

The main surface of the acoustic filter 264 has at least one of the same shape and size as the cross section of the acoustic hole 261. The main surface of the acoustic filter 264 may be formed in the same shape and size as the end surface of the acoustic hole 261 so that the acoustic filter 264 may be formed such that the side surfaces thereof face the inner periphery of the acoustic hole 261 As shown in FIG.

If the acoustic filter 264 and the acoustic filter support unit 265 are made of one body, for example, if one sheet is drawn or processed by injection molding, It can not be closely contacted with the inner circumference of the inner cylinder 261. This is because the bent part of one body is processed into a round shape. In contrast, in the present invention, as the acoustic filter 264 is mounted on the central region 265a of the acoustic filter support unit 265, the main surface of the acoustic filter 264 has the same shape as that of the acoustic hole 261 Size. ≪ / RTI >

Referring to these drawings, the acoustic filter support unit 265 is formed in the central region 265a and includes mounting portions 267a, 267b, and 267c to which the acoustic filter 264 is mounted. The plurality of mounting portions 267a, 267b and 267c are arranged to be spaced from each other in the discharge hole 266 and / or the central region 265a.

The acoustic filter support unit 265 is made of a metal material, and the mounting portions 267a, 267b, and 267c are formed to be in surface contact with the acoustic filter 264. Specifically, the mounting portions 267a, 267b, and 267c are formed to cross at least a part of the discharge hole.

The acoustic filter 264 is made of a metal material so as to be welded to the acoustic filter support unit 265. As the acoustic filter 264 is mounted on the mounting portions 267a, 267b, and 267c by welding, the acoustic filter 264 may be formed as a flat plate without a separate fastening structure. The planar acoustic filter 264 may have more through holes, through which sound emission is smoother even in the acoustical hole 261 of a smaller area.

Hereinafter, another embodiment of the mobile terminal according to the present invention will be described. FIG. 6 is an exploded view of a mobile terminal according to another embodiment of the present invention, FIG. 7 is an enlarged view showing the acoustic output module 360 of FIG. 6, and FIG. Fig.

Referring to these drawings, a central region 365a of the acoustic filter support unit 365 is inserted into the acoustic hole 361 at least partially protruding from the edge region 365b. More specifically, the mounting portions 367a, 367b, and 367c of the central region 365a protrude from the edge region 365b and are inserted into the acoustic holes 361.

Through this, the acoustic filter 364 can be disposed closer to the front surface of the window 351b. 8, the length of the internal space of the acoustic hole 361 is further reduced and the acoustic output of the acoustic hole 361 is reduced by the acoustic outputting means of the present embodiment, as shown in FIG. 8. In other words, the length of the acoustic hole 361 becomes shorter, It becomes difficult for the foreign matter to adhere to the inner space of the housing.

The portions protruding from the mounting portions 367a, 367b, and 367c and the surface-contacting portions of the acoustic filter 364 are formed to be perpendicular to each other. The portions that are in surface contact with the protruding portions may be formed through sheet metal processing or the like in one body, and the portions where the protruding portions meet (i.e., the portions that are bent) may be rounded by sheet metal processing. As the rounding shape is disposed in the opening of the acoustical hole 361, the outer circumference of the surface-contacting portion can be spaced apart from the inner circumference of the acoustic hole 361.

Even though the mounting portions 367a, 367b and 367c are spaced apart from the inner periphery of the acoustic hole 361 as described above, the acoustic filter 364 is made of a flat plate and mounted on the mounting portions 367a, 367b and 367c, May be formed in an area that is filled with the acoustic holes 361. [

Hereinafter, another embodiment of the mobile terminal according to the present invention will be described. 9 is an exploded view showing another embodiment of a mobile terminal according to the present invention.

Referring to this figure, an acoustic output element 462 is disposed between the front case 401 and the rear case 402. [ The acoustic output element 462 may be mounted on the circuit board 417 and the circuit board 417 may be mounted on the rear case 402. [

An acoustic hole 406 corresponding to the acoustic output module 260 (see FIG. 2A) is formed on the front surface of the front case 401 to emit sound output from the acoustic output element 462, A window 451b is mounted on the lower side of the window 451b.

 On the rear surface of the front case 401, an acoustic filter support unit 465 is mounted. However, the present invention is not limited thereto, and the acoustic filter support unit 465 may be mounted on a separate member or a rear case 402 so as to cover the rear surface of the front case 401.

The acoustic filter support unit 465 is made of a flat plate and is equipped with an acoustic filter 464 for filtering the inflow of foreign substances through the acoustic hole 406.

The acoustic filter 464 is mounted in the central region 465a and the edge region 465b is mounted in the acoustic hole 406 in the front case 401 so that the acoustic filter 464 is inserted into the acoustic hole 406. [ And the opening portion of the opening. The central region 465a protrudes from the edge region 465b so that at least a portion of the central region 465a is inserted into the acoustic hole 406. The detailed structure is similar to that of the other embodiments of the present invention described with reference to FIGS. Can be formed in the same manner.

As the acoustic hole 406 is formed in the front case 401 as described above, the emission path of the sound output from the acoustic output element 462 becomes shorter and the acoustic filter 464 is inserted into the acoustic hole 406 As a result, the space in which the foreign substance can adhere to the acoustic hole 406 is reduced. Further, as the acoustic filter 464 is brought into close contact with the inner periphery of the acoustic hole 406, the spacing space between the acoustic filter 464 and the acoustic hole 406, which may contain foreign matter, can be relaxed or eliminated.

The mobile terminal described above can be applied to not only the configuration and method of the embodiments described above but also all or some of the embodiments may be selectively combined so that various modifications may be made to the embodiments It is possible.

1 is a block diagram of a mobile terminal according to an embodiment of the present invention.

2A is a front perspective view of a mobile terminal according to an embodiment of the present invention;

FIG. 2B is a rear perspective view of a mobile terminal according to an embodiment of the present invention; FIG.

3 is an exploded view of the mobile terminal of FIG.

4 is an enlarged view of the sound output module of Fig.

Figure 5 is a partial cross-sectional view taken along line V-V of Figure 2a.

6 is an exploded view of a mobile terminal according to another embodiment of the present invention;

Figure 7 is an enlarged view of the acoustic output module of Figure 6;

8 is a partial cross-sectional view of the acoustic output module of Fig.

9 is an exploded view showing still another embodiment of a mobile terminal according to the present invention.

Claims (10)

A main body to which a window having an acoustic hole is mounted, and an acoustic output element is embedded so as to face the acoustic hole; An acoustic filter which is made of a flat plate and filters the inflow of foreign matter through the acoustic holes; And An acoustic filter support unit mounted on the central area and configured to cover an edge area of the window that defines an opening of the acoustic hole, Wherein the main surface of the acoustic filter is formed in the same shape and size as the end surface of the acoustic hole so that the acoustic filter can be inserted into the acoustic hole with the side surfaces of the acoustic filter closely arranged with the inner periphery of the acoustic hole, Wherein the plurality of through holes provided in the main surface of the acoustic filter are exposed to the outside by inserting the acoustic filter into the acoustic holes. The method according to claim 1, Wherein the acoustic filter is made of a metal material so as to be welded to the acoustic filter support unit. delete The method according to claim 1, Wherein the central region is formed with a discharge hole for discharging sound output from the sound output element. 5. The method of claim 4, Wherein the acoustic filter support unit is formed in the central region and further comprises a mounting portion to which the acoustic filter is mounted. 6. The method of claim 5, Wherein the plurality of mounting portions are spaced apart from each other in the discharge hole. 6. The method of claim 5, Wherein the mounting portion protrudes from the edge region, and at least a part of the mounting portion is inserted into the acoustic hole. 6. The method of claim 5, Wherein the acoustic filter support unit is made of a metal material, and the mounting portion is formed to be in surface contact with the acoustic filter, and the acoustic filter is welded to the mounting portion. A main body in which an acoustic output element is incorporated; A terminal case having an acoustic hole for emitting acoustic output from the acoustic output element formed on one surface thereof; An acoustic filter which is made of a flat plate and filters the inflow of foreign matter through the acoustic holes; And And an acoustic filter support unit which is formed so that the acoustic filter is mounted in the center area and the edge area covers a part of the case defining the opening of the acoustic hole so that the acoustic filter is inserted into the acoustic hole, Wherein the main surface of the acoustic filter is formed in the same shape and size as the end surface of the acoustic hole so that the acoustic filter can be inserted into the acoustic hole with the side surfaces of the acoustic filter closely arranged with the inner periphery of the acoustic hole, Wherein the plurality of through holes provided in the main surface of the acoustic filter are exposed to the outside by inserting the acoustic filter into the acoustic holes. 10. The method of claim 9, Wherein the central region protrudes from the edge region, and at least a part thereof is inserted into the acoustic hole.

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