KR101612791B1 - Speaker module and portable terminal having the same - Google Patents

Abstract

The present invention relates to a speaker device of a portable terminal, and more particularly, to a speaker device having a speaker having a first surface on which a front sound is emitted and a second surface on which a rear sound is emitted. And an enclosure formed to be able to support the speaker and to block the rear sound so that the rear sound is not mixed with the front sound, wherein the enclosure is configured to reflect the front sound, And a flare flare section extending from the outlet of the appliance wall section along an advancing direction of the front sound, wherein the flare section is formed at a position spaced apart from the first face so as to be inclined in a lateral direction, Shaped guide portion.

Description

TECHNICAL FIELD [0001] The present invention relates to a speaker module and a portable terminal having the speaker module.

The present invention relates to a speaker device of a portable terminal.

A portable terminal is a portable electronic apparatus having at least one function of being able to carry and store information by using a user, a function of allowing a user to make a voice or video call with the other party, or a function of storing data.

As the functions are diversified, the portable terminal may be equipped with functions such as photographing and photographing of a moving picture, reproduction of a music or video file, reception of a game, or broadcasting. Such functions may be implemented in a multimedia device by being embedded in a portable terminal.

For the implementation of various functions and the operation of parts, the portable terminal requires sufficient support in terms of hardware or software. For example, research has been conducted to develop a user interface environment in which a user can easily and conveniently use a portable terminal in terms of usage.

The portable terminal may be provided with a receiver device for communication, and a speaker device may be additionally installed for stronger sound output. The portable terminal also has a speaker hole directly connected to the receiver device or the speaker device so that the user can hear the sound through the user's ear.

The speaker hole may be used for a sound path output through the receiver device or for a sound path output through the speaker device (receiver / speaker separation type) or to output sound of both devices / Speaker integrated type).

However, in the former case, discrete speaker holes are placed on the front or back side of the portable terminal, which may hinder the appearance of the portable terminal or cause a restriction in the design of the design.

It is an object of the present invention to improve the appearance of the portable terminal by adjusting the position of the speaker hole and to reduce the restriction of the design of the components constituting the portable terminal.

It is also an object of the present invention to improve the quality of sound outputted through the adjusted speaker hole and to harmonize with the design.

According to an aspect of the present invention, there is provided a speaker comprising: a speaker having a first surface on which a front sound is emitted and a second surface on which a rear sound is emitted; And an enclosure formed to be able to support the speaker and to block the rear sound so that the rear sound is not mixed with the front sound, wherein the enclosure is configured to reflect the front sound, And a flare flare section extending from the outlet of the appliance wall section along an advancing direction of the front sound, wherein the flare section is formed at a position spaced apart from the first face so as to be inclined in a lateral direction, The speaker module includes a guide portion formed in a shape of a letter.

The enclosure may be further formed with a shield wall portion at least such that the speaker is locked to provide the resonance space of the rear sound insulation.

A soft first gasket may further be attached to the end of the shield wall portion.

A first channel portion may be formed between the tool wall portion and the first surface so as to be wider toward the guide portion. A second channel portion may be formed between the opposing walls of the guide portion.

The second channel portion may be formed to have a larger inclination than the first channel portion.

The instrument wall portion may have an inclined surface such that a gap is gradually widened from the first edge to the opposite second edge of the speaker.

A soft second gasket may further be attached to the end of the guide portion.

The present invention also provides a portable terminal comprising: a terminal case having a sound hole formed on a side thereof; And a speaker module including an enclosure built in the terminal case, wherein the speaker module includes: a speaker having a first surface on which a front sound is emitted and a second surface on which a rear sound is emitted; And an enclosure formed to be able to support the speaker and to block the rear sound so that the rear sound is not mixed with the front sound, wherein the enclosure is configured to reflect the front sound, And a flare flare section extending from the outlet of the appliance wall section along an advancing direction of the front sound, wherein the flare section is formed at a position spaced apart from the first face so as to be inclined in a lateral direction, And a guide portion formed to be in communication with the sound hole.

A display module may be disposed in the terminal case, and the display module may be disposed to overlap at least the speaker among the speaker modules.

According to the speaker module and the portable terminal having the speaker module according to the present invention, the appearance of the portable terminal is improved by placing the speaker hole on the side surface of the terminal body, and since complicated shapes are not formed on the front or rear surface, There are advantages.

In addition, it is also possible to arrange a mechanism wall portion that intercepts the front sound of the speaker at a position spaced apart from the first surface of the speaker by minimizing the loss of sound by making the front sound obliquely run in the side direction of the speaker, . Such a configuration and arrangement has an effect of enabling optimum sound emission by using a minimum gap even in a structure in which it is difficult to arrange a portable terminal or a speaker having a small size.

1 is a block diagram of a mobile terminal according to the present invention;
FIG. 2 is a perspective view of a mobile terminal or a mobile terminal according to the present invention,
FIG. 3 is a rear perspective view of the portable terminal shown in FIG.
Fig. 4 is an exploded perspective view of the portable terminal of Fig.
5 is a perspective view of a speaker module related to the present invention.
FIG. 6 is an exploded perspective view showing a state in which the speaker is separated from the enclosure in FIG.
7 is a cross-sectional view of the speaker module mounted on the portable terminal
8 is a diagram showing an operation state diagram visually expressing the progress of sound emitted through a speaker
9 is a graph showing the sound characteristics output through the speaker device related to the present invention

Hereinafter, a portable terminal related to the present invention will be described in detail with reference to the drawings. The suffix "module" and " part "for components used in the following description are given merely for convenience of description, and do not give special significance or role in themselves.

1 is a block diagram of a mobile terminal according to 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 unit 160, A controller 170, a controller 180, a power supply 190, and the like. 1 shows a mobile terminal having various components. However, not all illustrated components are required. A mobile terminal may be implemented by more components than the illustrated components, or a mobile terminal may be implemented by fewer components.

The components will be discussed in turn.

The wireless communication unit 110 may include one or more components that allow wireless communication between the mobile terminal 100 and another wireless communication system or wireless communication 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 be 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 server and transmitting the generated broadcast signals and / or broadcast- The broadcast-related information may mean information related to a broadcast channel, a broadcast program, or a broadcast service provider. 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 also be provided through a mobile communication network, in which case it may be received by the mobile communication module 112.

Broadcast-related information can 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).

The broadcast receiving module 111 may be a digital multimedia broadcasting (DMB-T), a digital multimedia broadcasting (DMB-S), a media forward link only (DVF-H) (ISDB-T), and digital broadcasting systems such as ISDB-T (Integrated Services Digital Broadcast-Terrestrial). Of course, the broadcast receiving module 111 may be configured to be suitable for all broadcasting systems that provide broadcast signals 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 unit 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 the wireless Internet module 113 can be built in or externally. 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 the short distance communication technology.

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

The 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 a moving image obtained by the image sensor in the video communication mode or the photographing mode. Then, 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. [ The camera 121 may be equipped with two or more cameras according to the configuration of the terminal.

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. The microphone 122 may be implemented with various noise reduction algorithms for eliminating noise generated in the process of 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. Particularly, when the touch pad has a mutual layer structure with the display unit 151, which will be described later, it can be called a touch screen.

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 a 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 a mobile terminal, a plurality of display portions may be spaced apart or arranged integrally on one surface, and may be disposed on different surfaces, respectively.

(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 a mobile terminal or a proximity of the touch screen, which is surrounded by a 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 proximity sensors 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 the proximity of the pointer is detected by a change in 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 the sake of 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 contacting the pointer is referred to as "contact touch. &Quot; The position where the pointer is proximately touched on the touch screen means the position where the pointer corresponds vertically to the touch screen when the pointer is touched proximately.

The proximity sensor detects a proximity touch, 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 can 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 mechanical structure of the speaker according to the present invention will be described later in detail.

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.

The interface unit 170 may be a path through which power from the cradle is supplied to the mobile terminal 100 when the mobile terminal 100 is connected to an external cradle, May be a pathway 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 control unit 180 typically controls the overall operation of the mobile terminal. For example, voice communication, data communication, video communication, and the like. In addition, 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 control unit 180 can perform a pattern recognition process for recognizing the 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.

FIG. 2 is a perspective view of a mobile terminal or a portable terminal according to the present invention, as viewed from the front.

The disclosed mobile terminal 100 includes a bar-shaped terminal body 101. However, the present invention is not limited thereto, but 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 movably coupled to each other.

The terminal body 101 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 102 and a rear case 103. [ Various electronic components are embedded in the space formed between the front case 102 and the rear case 103. At least one intermediate case may be additionally disposed between the front case 102 and the rear case 103. [ 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 display unit 151, the sound output module 152, the camera 121, the first user input unit 131, the microphone 122, the interface 170, and the like may be disposed in the front body 102, have.

The display unit 151 occupies most of the front surface of the front case 102. A sound output unit 151 and a camera 121 are disposed in an area adjacent to one end of both ends of the display unit 151 and a user input unit 131 and a microphone 122 are disposed in an area adjacent to the other end. The user input unit 132 and the interface 170 may be disposed on the side surfaces of the front case 102 and the rear case 103.

The receiver 152 is configured to be capable of outputting mainly a telephone tone, various system notification sounds, multimedia playback sounds, and the like. The receiver 152 may be configured in the form of a dynamic speaker, or may be configured in a bone conduction manner.

The user input unit is configured to receive a command for controlling the operation of the portable terminal 100. In FIG. 2, a first user input unit 131 disposed on the front surface of the terminal body 101, 2 user input unit 132 is started. The first and second user inputs 131 and 132 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 input by the first or second user input unit 131 or 132 may be variously set. For example, the first user input unit 131 receives commands such as start, end, scroll, and the like, and the second user input unit 132 controls the size of the sound outputted from the sound output unit 152, To the touch recognition mode of the touch screen.

3 is a rear perspective view of the portable terminal shown in FIG.

Referring to FIG. 3, a second camera 125 may be further mounted on the rear surface of the terminal body 101. The second camera 125 may have a photographing direction substantially opposite to that of the first camera 121 disposed on the front surface of the terminal body 101 and may be a camera having different pixels from the first camera 121.

For example, the first camera 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 transmit the face to the other party, and the second camera 125 photographs a general subject and immediately transmits It is preferable to have a high pixel. These cameras 121 and 125 may be installed in the terminal body such that they can be rotated or pop-up.

A flash 127 and a mirror 126 are additionally disposed adjacent to the second camera 125. The flash 127 illuminates the subject when the subject is photographed by the camera 125. The mirror 126 allows the user to illuminate the user's own face or the like when the user intends to photograph himself / herself using the camera 125 (self-photographing).

3, a speaker hole 204 is disposed on a side surface of the terminal body 101. As shown in FIG. . The speaker hole 204 may be used to output a sound larger than that of the receiver 152 disposed on the front surface of the terminal body 101. The detailed structure of the speaker hole 204 will be described in detail with reference to FIG. The speaker hole 204 on this side can prevent a complicated shape or a gap from being formed on the front surface or the rear surface of the mobile terminal having a small size and area, and can provide diversity and freedom in design.

In addition to the antenna for communication, an antenna 116 for receiving a broadcast signal may be additionally disposed on the side of the terminal body 101. The antenna 116, which forms a part of the broadcast receiving module 111, can be installed to be able to be drawn out from the terminal body.

The terminal body 101 is equipped with a power supply unit 190 for supplying power to the portable terminal 100. The power supply unit 190 may be built in the terminal body or may be detachable from the outside of the terminal body.

4 is an exploded perspective view of the portable terminal of FIG. 4, the terminal body 101 can be disassembled into a front case 102 and a rear case 103. Inside the rear case 103, a speaker module 200 related to the present invention is installed do. A speaker hole 204 is formed on a side surface of the rear case 103 to transmit sound output from the speaker module 200 to the outside. The speaker hole 204 is disposed on the side surface of the case 103 and may be formed on the upper side surface, the lower side surface, or the left and right sides of the case 103.

FIG. 5 is a perspective view of a speaker module related to the present invention, FIG. 6 is an exploded perspective view showing a state in which a speaker is separated from an enclosure in FIG. 5, and FIG. 7 is a sectional view of the speaker module in a portable terminal.

As shown in these drawings, the speaker module 200 is configured to include a speaker 210 as a whole and an enclosure 220 that supports the speaker 210. The speaker 210 has a first surface 212 through which the front sound is emitted and a second surface 211 through which the rear sound is emitted, and may be formed in a disc shape or an elliptical shape on the shape surface. Herein, the rear sound is a sound having opposite phases emitted from the second surface 211 simultaneously with the front sound.

Spring-shaped contact terminals 217 and 218 may be provided on one side of the enclosure 220 so that the connection portions 215 and 216 of the speaker may be connected to other connectors.

6, the enclosure 220 includes a speaker mounting portion 224 on which a speaker 210 is mounted, a shielding wall portion (not shown) for providing a rear sound-absorbing resonance space 207 emitted from the second surface of the speaker 210 225).

The shielding wall portion 225 may have a height at least such that the speaker 210 is locked so that the shielding wall portion 225 can surround the rear surface of the speaker 210 by the configuration of the other structure 106 as shown in FIG. A first flexible member 240 may be attached to the end of the shield wall 225 for close contact with another structure 106. As such a material, rubber or foamable resin can be applied.

7, the speaker mounting portion 224 of the enclosure 220 is overlapped with the display module 151. The display module 151 of the portable terminal 100 shown in FIG. 7 differs from the portable terminal in that the speaker and the speaker mounting portion are disposed horizontally without being overlapped with the display module, They are stacked. The configuration of the device of the portable terminal 100 may be suitable for forming a small-size implementation or a separate module independent of or dependent on.

A separate passageway for exiting the front sound of the speaker 210 to the outside should be provided between the speaker 210 and the display module 151. [ There is a room for increasing the thickness of the portable terminal 100 when such a passage is enlarged. In order to achieve this, in this embodiment, the space through which the front sound of the speaker 210 can be transmitted to the outside is minimized through the shape of the enclosure 220, and the thickness of the speaker 210 and the display module 151, Increase.

Referring to FIG. 6, the speaker mounting portion 224 is configured to block rear sound to prevent destructive interference due to mixing of the rear sound of the speaker 210 with the front sound, while supporting the speaker 210. The edge of the first surface 212 of the speaker 210 is closely attached to the speaker mounting portion 224 so that the front sound emitted through the first surface 212 can be blocked against soundproofing .

The enclosure 220 includes a mechanism wall portion 221 that blocks the front sound at a position spaced apart from the first surface 212 so that the outputted front sound is reflected and advances obliquely to the side direction of the speaker 210. An outlet 202 is formed at one side of the instrument wall 221 to allow sound emitted from the first surface 212 of the speaker 210 to escape. The front of the speaker 210 is blocked by the instrument wall 221 and the first channel part 201 formed between the first surface 212 of the speaker 210 and the instrument wall 221, And the sound is externally transmitted through the outlet 202. The front sound passing through the outlet 202 is guided outward again by the guide portion 223 formed in the enclosure 220. [

Referring to FIG. 7, the guide portion 223 includes opposing walls 223a and 223b to form a second channel portion 203 for guiding front sound. The guide portion 223 is formed in the shape of a flare so as to have an expanded sectional area along the traveling direction of the front sound from the outlet 202 of the mechanism wall portion 221. The second flexible member 230 is attached to the outlet of the guide portion 223 so as to form a closed passage with the speaker hole 204 of the case 103. Similarly to the first flexible member 240, rubber or foamable resin may be applied to the second flexible member 230.

Referring again to FIG. 7, the first channel portion 201 between the mechanism wall portion 221 and the first surface 212 is wider toward the guide portion 223. As an example of this, the inner surface of the mechanism wall portion 221 forms an inclined surface 221a. The inclined surface 221a is formed such that a gap between the inclined surface 221a and the first surface 212 is gradually widened from the first edge 210a of the speaker 210 to the opposing second edge 210b. This inclined surface 221a serves as a reflective surface suitable for the side sound propagating through the first surface 212 to proceed sideways. The width of the first channel part 201 is preferably as high as possible, but it is possible to obtain a level similar to that of direct sound radiation even in a space of 0.7 mm or more.

In order to make the resonance space 207 larger, the second channel portion 203 may be inclined larger than the first channel portion 201. Therefore, the size of the resonance space 207 defined by the shielding wall portion 225 of the guide portion 223 can be increased, so that the bass sound can be strengthened. Conversely, when the inclination of the second channel unit 203 is reduced, the size of the resonance space 207 is reduced, but the radiation of the front sound output through the first surface 211 can be smooth.

FIG. 8 is an operational state diagram showing a visual progression of sound emitted through a speaker.

The front sound reflected through the inclined surface 221a is propagated through the first channel portion 201 and the second channel portion 203 provided in the enclosure 220, 204 to the outside. After being emitted from the second side 211 of the speaker 210, the sound is resonated within the enclosed resonance space 207 of the enclosure 220.

FIG. 9 is a graph showing the characteristics of sound output through the speaker device related to the present invention. FIG. The sound pressure level is measured by frequency, and it can be seen that it exceeds the lower limit reference value above 1kHz as a whole.

The above-described speaker module and the portable terminal having the same are not limited to the configurations and the methods of the embodiments described above, but all or a part of the embodiments may be selectively combined to be variously modified. .

Claims (15)

A speaker having a first surface on which a front sound is emitted and a second surface on which a rear sound is emitted; And
And an enclosure formed to be able to support the speaker and to prevent the rear sound from being mixed with the front sound,
The enclosure includes:
A device wall part for blocking the front sound at a position spaced apart from the first surface so that the outputted front sound is reflected and diverged in a lateral direction of the speaker; And
And a guide portion formed in a flare shape so as to have an expanded cross-sectional area from the outlet of the instrument wall portion along the traveling direction of the front sound,
A first channel portion is formed between the tool wall portion and the first surface, a second channel portion is formed between the opposed walls constituting the guide portion,
Wherein one of the opposed walls constituting the guide portion is directly connected to the speaker,
And the rear sound-deadening resonance space is formed on the opposite side of the second channel section with respect to the opposite wall directly connected to the speaker. Claim 2 has been abandoned due to the setting registration fee. The method according to claim 1,
Wherein the enclosure further comprises a shield wall portion to which the speaker is locked so as to enclose at least part of the resonance space. Claim 3 has been abandoned due to the setting registration fee. 3. The method of claim 2,
And a soft first gasket is further attached to the end portion of the shielding wall portion. Claim 4 has been abandoned due to the setting registration fee. The method according to claim 1,
Wherein the first channel portion is formed to be wider toward the guide portion. Claim 5 has been abandoned due to the setting registration fee. 5. The method of claim 4,
And the second channel portion is formed to have a larger inclination than the first channel portion. Claim 6 has been abandoned due to the setting registration fee. The method according to claim 1,
Wherein the instrument wall portion has an inclined surface such that a gap is gradually widened from a first edge of the speaker to an opposite second edge thereof. Claim 7 has been abandoned due to the setting registration fee. The method according to claim 1,
And a soft second gasket is further attached to an end of the guide portion. A terminal case having a sound hole formed on a side surface thereof;
And an enclosure built in the terminal case includes a speaker module,
A speaker having a first surface on which a front sound is emitted and a second surface on which a rear sound is emitted; And
And an enclosure formed to be able to support the speaker and to prevent the rear sound from being mixed with the front sound,
The enclosure includes:
A device wall part for blocking the front sound at a position spaced apart from the first surface so that the outputted front sound is reflected and diverged in a lateral direction of the speaker; And
And a guide portion formed in a flare shape extending from the outlet of the mechanism wall portion so as to have an expanded sectional area along the traveling direction of the front sound,
A first channel portion is formed between the tool wall portion and the first surface, a second channel portion is formed between the opposed walls constituting the guide portion,
Wherein one of the opposed walls constituting the guide portion is directly connected to the speaker,
And the rear sound-deadening resonance space is formed on the opposite side of the second channel section with respect to the opposite wall directly connected to the speaker. Claim 9 has been abandoned due to the setting registration fee. 9. The method of claim 8,
A display module is disposed in the terminal case,
Wherein the display module is disposed to overlap at least the speaker of the speaker module. Claim 10 has been abandoned due to the setting registration fee. 9. The method of claim 8,
Wherein the enclosure further comprises a shield wall portion to which the speaker is locked to enclose at least a part of the resonance space. Claim 11 has been abandoned due to the set registration fee. 11. The method of claim 10,
Wherein the shielding wall portion is further provided with a shielding mechanism for shielding the resonance space. Claim 12 is abandoned in setting registration fee. 11. The method of claim 10,
Wherein a soft first gasket is further attached to an end of the shielding wall portion. Claim 13 has been abandoned due to the set registration fee. 9. The method of claim 8,
Wherein the first channel portion is formed to be wider toward the guide portion. Claim 14 has been abandoned due to the setting registration fee. 14. The method of claim 13,
Wherein the second channel portion is formed to have a larger inclination than the first channel portion. Claim 15 is abandoned in the setting registration fee payment. 9. The method of claim 8,
Wherein the instrument wall portion has an inclined surface such that a gap is gradually widened from the first edge to the second opposite edge of the speaker.

Images