KR20110048742A - Display device - Google Patents

Abstract

PURPOSE: A display device is provided to prevent vibration energy by driving a speaker from transmitting to an inside or an outside of a case. CONSTITUTION: A display module is arranged in a case. A speaker module is installed to a mounting unit of the case. An elastic member(130) is arranged between a sound output unit of the speaker module and a mounting unit of the case. The elastic member absorbs the vibration of the speaker module. A guide member(127) guides an oscillation movement according to a vibration direction of the speaker module.

Description

Display device

The present invention relates to a display device that can prevent the vibration energy generated by the driving of the speaker from being transmitted to the inside or outside of the case.

The present invention relates to a display device, and more particularly, to prevent vibration energy generated by driving of a speaker from being transmitted to the inside or outside of a case, and to prevent deterioration of sound quality and interference due to vibration noise. The present invention relates to a display device capable of preventing deterioration and changes in high and high sound reproduction characteristics.

The display device refers to a device that displays an image signal input from the outside. Such a display device is a concept including a monitor for displaying an image received from a computer and a television for displaying an image and a sound transmitted from a broadcasting station, and all devices for displaying an image input from the outside.

Recently, high-quality large display devices equipped with flat panel display modules such as liquid crystal display panels (LCDs) or plasma display panels (PDPs) have been in the spotlight.

The display device includes a display module for realizing an image, a speaker module for reproducing sound, a printed circuit board (PCB) for controlling the image of the display module, and controlling the sound and communication, and surrounding the front edge of the display module. And a rear cover covering the front cover and the rear of the display module.

Recently, as the display device becomes larger, slimmer, and more advanced, the importance of design elements for satisfying the aesthetics of the user as well as the basic image display function is increasing. In particular, the design point is to make the screen look bigger as the bezel is reduced, and to make the overall thickness thin and simple and stylish.

Therefore, as the thickness of the display device becomes thinner, the size of the mounting member and the speaker module installed therein is gradually decreasing.

Accordingly, the speaker module makes direct surface contact with the front cover or the rear cover. When the speaker is driven, the vibration energy of the speaker due to the vertical vibration is transmitted directly to the front cover or the rear cover, which is the basis of the vibration noise of the display device. Act as a cause.

In addition, as the thickness of the front cover or the rear cover on which the speaker module is mounted becomes thinner, vibrations driven by the driving of the speaker module are more easily transmitted along the cover, and the vibration noise is smoothly heard when viewing the display device. Because it interferes with, it causes the emotional dissatisfaction of the consumer.

In order to improve this problem, various methods have been attempted, but most of the methods for increasing the vibration reduction effect are greatly occurred in the sound quality deterioration of the speaker, and the method for increasing the sound quality deterioration prevention effect of the speaker is inferior to the vibration reduction effect. Have a problem.

Therefore, in recent years, there is a demand for a speaker module mounting structure capable of reducing vibration caused by speaker driving without taking up a lot of installation space in a slimming display device and preventing sound quality deterioration due to vibration noise. .

The present invention has been made to solve the above problems, an object of the present invention is a display having a mounting structure of a speaker module that can prevent the vibration energy generated by the driving of the speaker to be transmitted to the inside or outside of the case It is to provide a device.

In addition, another object of the present invention is to provide a display device capable of preventing degradation of low tone reproduction band and change of mid and high tone reproduction characteristics by preventing degradation of sound quality and interference of sound caused by vibration noise.

In addition, another object of the present invention is to provide a display device that can respond to the increase in size and slimness of the device, and to smoothly listen to the audio information during viewing, thereby improving the emotional quality of the consumer.

The present invention is to achieve the above object,

According to an aspect of the invention, the case having a mounting portion provided on one side; A display module disposed in the case; A speaker module mounted to a mounting portion of the case; An elastic member disposed between the sound output unit of the speaker module and a mounting unit of the case and absorbing vibration of the speaker module; And a guide member for guiding a vibrating motion according to the vibration direction of the speaker module in a state in which a gap between the sound output part of the speaker module and the mounting part of the case is sealed.

Here, the elastic member may be a plurality of springs respectively disposed at the edge portion of the sound output unit of the speaker module.

In addition, the guide member is coupled to the front edge portion of the speaker module, the first gasket having an end extending toward the mounting portion to have a predetermined height to seal the gap between the speaker module and the mounting portion of the case; And a second gasket attached to an edge portion of the mounting part of the case, and having a guide groove for inserting an end portion of the first gasket and reciprocating movement of the end portion of the first gasket when the speaker module vibrates. have.

Alternatively, the guide member is coupled to the front edge portion of the speaker module, and seals the gap between the speaker module and the mounting portion of the case, the first gasket having a guide groove open toward the mounting portion in the front edge portion; And a second gasket formed at an edge portion of the mounting portion of the case and inserted into the guide groove of the first gasket, and reciprocated in the guide groove of the first gasket when the speaker module vibrates.

Here, the depth of the guide groove is preferably greater than the height of the end portion of the first gasket to be inserted.

In addition, the display device according to an aspect of the present invention may further include a cushion member disposed between the second gasket and the edge portion of the mounting portion of the case.

The speaker module may further include: a housing having an open front end portion, a space portion formed therein, and fastening portions formed at both end portions thereof; And one or more speakers mounted in the housing.

In addition, the first gasket and the second gasket may be formed of the same material.

According to another aspect of the invention, the case having a mounting portion provided on one side; A display module disposed in the case; A speaker module mounted to a mounting portion of the case; And both ends are fixed to the sound output unit of the speaker module and the mounting unit of the case, respectively, and absorb the vibration of the speaker module in a state in which the gap between the sound output unit and the mounting unit of the speaker module is sealed when the speaker module vibrates. A display device including an elastic gasket is provided.

The speaker module may include a housing having an open front end portion, a space portion formed therein, and a fastening portion formed at both side end portions thereof; And one or more speakers mounted in the housing.

Here, the gasket is preferably a bellows sealing the gap between the sound output portion of the speaker module and the mounting portion of the case.

As described above, the display device according to the present invention can prevent the vibration energy generated by the driving of the speaker from being transferred to the inside or the outside of the case.

In addition, the display device according to the present invention can prevent degradation of sound quality and interference of sound quality due to vibration noise, and can prevent low sound reproduction band degradation and mid and high sound reproduction characteristics.

In addition, the display device according to the present invention can respond to the increase in size and slimness of the device, it is possible to smoothly listen to the audio information during viewing can improve the emotional quality of the consumer.

Hereinafter, a display device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings show exemplary forms of the present invention, which are provided to explain the present invention in more detail, and the technical scope of the present invention is not limited thereto.

In addition, irrespective of the reference numerals, the same or corresponding components will be given the same reference numerals, and redundant description thereof will be omitted. For convenience of description, the size and shape of each component may be exaggerated or reduced. have.

On the other hand, terms including ordinal numbers such as first or second may be used to describe various components, but the components are not limited by the terms, and the terms are defined by one component from another component. It is used only for the purpose of distinguishing.

1 is a perspective view illustrating a display device according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view illustrating a main component constituting a display device according to an embodiment of the present invention.

The display apparatus 1 according to the exemplary embodiment of the present invention includes a case having a predetermined space portion formed therein and a mounting portion formed at one side thereof.

The case includes a front cover 10 having a display area 11 and a non-display area 12 and a rear cover 30 which is directly connected to the front cover or through a separate mounting member and forms a predetermined space. It may include.

In addition, the display module 20 is disposed behind the front cover 11 and implements an image, and disposed behind the display module 30 and controls the image, sound, and communication of the display module 20. A printed circuit board (PCB, not shown).

The display module 20 may include a cathode ray tube (CRT), an electroluminescent element (EL), a light emitting diode (LED), a vacuum fluorescence display (VFD), and an electric field. Emissive or light-receiving modules, such as a field emission display (FED), a plasma display panel (PDP), a liquid crystal display (LCD), and the like, may be included. The display device 1 may be embodied in various kinds of video display devices such as a television or a monitor.

3 is a rear view of the front cover shown in FIG. 2.

1 to 3, the front cover 10 includes a display area 11 for displaying an image to the outside and a non-display area 12 that is formed to be translucent or opaque so that the image is not displayed to the outside. It may include.

Herein, the display area 11 and the non-display area 12 of the front cover 10 may be divided in various ways. In one embodiment, the display area 11 is formed of a plate formed of transparent resin or glass. The non-display area 12 may be formed by printing a translucent or opaque ink or film on one edge portion of the plate.

In addition, the front cover 11 may perform a function of correcting optical characteristics of a display image displayed from the display module or shielding electromagnetic waves or near infrared rays, and for this purpose, a plurality of functional layers may be stacked on the front cover 11. Can be.

In addition, the speaker module 100 as well as the above-described display module 20 and the printed circuit board are disposed together in the space portion (not shown) between the front cover 10 and the rear cover 30.

1 and 3, the case is provided with a mounting portion for mounting the speaker module on one side.

The mounting position of the speaker module 100 is not limited, and for example, a grill unit having a sound hole capable of outputting sound in the non-display area 12 of the front cover is formed, and the grill of the front cover 11 is formed. The speaker module can be mounted on the back of the unit.

Alternatively, an opening may be formed in the non-display area 12 of the front cover 12, and a speaker module 100 having a grille mounted at the front end may be mounted in the opening of the non-display area 12. .

In order to slim down the display device 1 and minimize non-display area, it is preferable to mount the speaker module 100 on the side of the case rather than the front cover 11.

The side of the case may be formed by the combination of the front cover 10 or the rear cover 30, the mounting member (not shown) or the middle for coupling the front cover 10 and the rear cover 30 It may be formed by a housing (not shown).

2 and 3, in the display apparatus 1 according to the exemplary embodiment, the speaker module 100 is mounted at the lower end of the front cover 11 and the installation surface 13 forming a side surface of the case. This extends.

4 is an enlarged view of a portion A of FIG. 3 and illustrates a mounting state of the speaker module 100 and the mounting surface 13.

The installation surface 13 is formed with a grill portion 13a having a plurality of sound holes 14 for outputting the sound generated by the speaker module 100 to the outside, the grill portion 13a is a speaker module ( It may be appropriately formed according to the number and size of 100).

On the other hand, as described above, the mounting portion provided in the case for mounting the speaker module 100 may be a grill portion or an opening, for convenience of description will be described limited to that the grill portion 13a is formed in the case .

In addition, the speaker module 100 is fixed to the installation surface 13 of the case through a screw (S) is inserted into the fastening portion 122 through the installation surface (13).

Meanwhile, referring to FIG. 1, the display apparatus 1 may further include a stand 200 that supports and distributes the load of the display main body, and the stand 200 may include a base part mounted on an installation surface ( 220 and a neck unit 210 connecting the base unit and the display main body, and the stand 200 may be configured to implement a tilting or swivel operation to provide an optimal viewing angle.

1 illustrates a case in which a load is supported by the stand 100 in the display main body, but is not limited thereto. The display main body may be fixed and supported on a wall by a wall-mounted type.

5 is a perspective view illustrating a main component of the speaker module 100 according to the present invention.

4 and 5, the speaker module 100 includes a front end portion open toward the grill portion 13a of the case, a space portion 111 formed therein, and fastening portions 112 formed at both side end portions thereof. The housing 110 having the and the speaker module 100 includes one or more speakers 120 disposed in the space 111 of the housing 110.

The speaker 120 may be mounted in the slimming display device 1 and may be variously formed in a structure capable of realizing high sound quality. When the speaker 120 transmits a voice signal current to the voice coil in the magnetic field of the magnet, Depending on the strength, the mechanical force acts on the coil to generate the movement.

In other words, according to Fleming's left-hand law, the kinetic energy in the vertical direction generated by magnetic energy and electrical energy is used.

Referring to FIG. 4, the speaker may include a voice coil 121, a plate 122 disposed on the voice coil 121, and a magnet 123 disposed on the plate.

The voice coil 121 is wound around a core formed of a circular tube, and may be installed on an upper side of a yoke (not shown) formed of a circular plate.

In addition, the speaker 100 is in contact with the diaphragm 125 and the outer circumferential surface of the diaphragm 125 to vibrate up and down with the damper 124 for adjusting the bass reproduction band, the voice coil 121 The edge cap 126 may perform a braking and control function of the continuous signal to facilitate the linear motion of the dust cap 128.

The speaker 100 having such a structure, when an electric signal is applied to the voice coil 121 through a connection terminal (not shown), the electric field is changed according to the magnitude of the electric signal to the voice coil 121 forming a magnetic circuit The voice coil 121 vibrates up and down from the yoke by the magnetic force of the magnet 123, thereby vibrating the diaphragm 125 connected to the core of the voice coil 121 to output sound.

Meanwhile, referring to FIG. 3, when the speaker module 100 is driven, vibration energy of the speaker module 100 is generated along a vertical direction perpendicular to the installation surface 13, and the vibration energy is installed on the installation surface 13. Along the inside of the case.

Furthermore, as the display device 100 becomes slimmer, the installation space inside the case becomes narrower, and thus, the spacing between adjacent components becomes smaller, so that the transmission of vibration energy affects each component, and the vibration noise As a result, the sound quality of the speaker module 100 is also degraded.

Therefore, when the speaker module 100 is installed in the case, not only the vibration energy is buffered, but also the sound quality must be prevented.

In order to prevent the sound quality of the speaker from being lowered, a certain space may be provided between the speaker module 100 and the installation surface 13 of the case to prevent a direct effect of sound waves generated from the speaker module 100 being transmitted to the case.

However, if a space is provided between the speaker module 100 and the installation surface 13 of the case, the speaker module 100 may not come into close contact with the installation surface 13 of the case, resulting in distortion and degradation of sound quality. .

Therefore, a mounting structure for preventing the case from vibrating by the sound waves output from the speaker module 100 is required to have a structure that is fastened so that the speaker module 100 and the installation surface 13 of the case as close as possible.

In addition, the vibration energy due to the sound wave output from the speaker module 100 acts in the horizontal direction or various orientations, not only acting in the vertical direction with respect to the surface contacting the installation surface of the speaker module 100 and the case.

As described above, in order to efficiently absorb the vibration energy of the speaker module 100 radiated in all directions, the continuous portion that is not disconnected at the front end portion of the speaker module 100 is not a buffer means acting only at a specific point of the speaker module 100. There is a need for a shock absorbing means.

In view of prevention of sound quality reduction and vibration energy buffering, the display device 1 according to the present invention seals an interval between the speaker module and the grill unit and an elastic member that absorbs the vibration of the speaker module, and performs vibration movement of the speaker module. It includes a guide member for guiding.

FIG. 6 is a perspective view of a speaker module related to the present invention, and FIG. 7 is a cross-sectional view of main parts illustrating a mounting state of the speaker module illustrated in FIG. 6.

First, the elastic member may be formed of various shapes and materials that can buffer the vertical movement of the speaker module 100.

In addition, the elastic member is a plurality of springs 130 respectively disposed in the edge portion of the sound output unit (front end) of the speaker module 100 so as to be located in the space between the speaker module 100 and the mounting surface (13) Can be.

Referring to FIGS. 6 and 7, when the speaker module 100 is vertically driven, each elastic member 130 repeats compression and recovery by the repulsive effect of the speaker module 100, and cancels vibration energy. .

In addition, the plurality of elastic members 130 may be disposed at each edge portion of the sound output unit of the speaker module 100 to efficiently absorb vibration energy of the speaker module 100 radiated in all directions.

8 is an exploded perspective view of the speaker module according to the present invention, FIG. 9 is a cross-sectional view of the speaker module taken along the line BB ′ of FIG. 8, and FIG. It is a cross section.

As described above, when a space is generated between the speaker module 100 and the installation surface 13 of the case, the speaker module 100 may not come into close contact with the installation surface 13 of the case, resulting in distortion and degradation of sound quality. Get up.

Therefore, the guide member guides the vibration motion according to the vibration direction of the speaker module in a state in which the gap between the front end of the speaker module 100 and the grill part 13a of the installation surface 13 is sealed.

The guide member is coupled to the front edge portion of the speaker module 100, the end portion extending toward the grill portion 13a to have a predetermined height to seal the gap between the speaker module and the grill portion of the case ( And a first gasket 127 having 127a.

Here, the end portion 127a of the first gasket 127 is a front end of the speaker module 100 to close the gap between the speaker module 100 and the grill portion 13a of the installation surface 13 of the case. It is desirable to have a continuous shape that does not break at the part.

That is, the first gasket 127 is a space between the edge 126 and the open front end of the housing 110 and the grill of the speaker module 100 of the speaker module 100 and the installation surface 13 of the case. The gap between the portions 13a is sealed.

In addition, the guide member is coupled to the edge portion of the grill portion of the installation surface 13 of the case, the end portion 127a of the first gasket 127 is inserted, the first during vibration of the speaker module 100 It includes a second gasket 140 is formed with a guide groove 142 to guide the reciprocating motion of the end portion 127a of the gasket 127.

8 and 9, the second gasket 140 has a through hole 141 through which a sound generated from the speaker 120 can be transferred to the outside at the center thereof, and the guide groove 142 is formed of the second gasket 140. It has a continuous shape so as not to be disconnected at the front end portion of the speaker module 100, such as the terminal portion 127a of the one gasket 127.

In addition, the depth of the guide groove 142 is preferably greater than the height of the end portion 127a of the first gasket 127 is inserted.

Therefore, even when the speaker module 100 is driven up and down, the end portion 127a of the first gasket 127 is reciprocated only in the guide groove of the second gasket, so that the distance between the speaker module 100 and the installation surface 13 is increased. The gap will remain sealed.

That is, the display apparatus 1 according to an exemplary embodiment of the present invention may prevent the distortion and degradation of sound quality by closely contacting the speaker module 100 to the installation surface 13 even when the speaker module 100 is driven.

Referring to FIGS. 7 and 8, the elastic member 130 is illustrated only when disposed inside the first gasket 127, but may be disposed in the guide groove 142 of the second gasket 141. Of course.

On the other hand, unlike the guide members 127 and 140 described so far, the guide member according to another embodiment is coupled to the front edge portion of the speaker module, sealing the gap between the speaker module and the grill portion of the case, It is formed in the edge portion of the first gasket having a guide groove open toward the grill portion toward the grill portion and the grill portion of the case, inserted into the guide groove of the first gasket, the vibration of the speaker module of the first gasket It may include a second gasket reciprocating in the guide groove.

That is, the guide member described with reference to FIGS. 8 and 9 has a terminal portion having a predetermined height formed in the first gasket, and a guide groove into which the terminal portion is inserted into the second gasket is formed. In contrast, the guide groove is formed in the first gasket. The second gasket may be inserted into the guide groove.

On the other hand, the guide member, in order to prevent deterioration of sound quality due to reciprocating movement, it is preferable that the first gasket 127 and the second gasket 140 is formed of the same material.

Referring to FIG. 10, the display device according to an embodiment of the present invention is vibrated by the speaker module 100 when the speaker module 100 is driven by the elastic member 130 and the guide members 127 and 140. Absorbs and guides the vibrating motion of the speaker module 100 and at the same time can seal the gap between the front end portion of the speaker module 100 and the grill portion of the mounting surface 13, the speaker 120 Interference between the radiated sound emitted through the front and the back of each can be avoided.

By avoiding the interference between the radiating sound, it is possible to prevent the sound quality deterioration, in particular the sound quality deterioration in the low tone reproduction band, and effectively absorb the vibration generated in all directions to prevent the transmission of vibration into the case.

In addition, the display device according to an embodiment of the present invention may further include a cushion member 160 disposed between the second gasket 140 and the installation surface 13 of the case.

11 is a sectional view showing the main parts of a speaker module, according to another embodiment of the present disclosure.

A display device according to another embodiment of the present invention has a predetermined space portion formed therein, and outputs sound through a case having a grill portion formed on one side, a display module disposed in the space portion of the case, and a grill portion of the case. It includes a speaker module.

The speaker module has the same structure as that of the speaker module described with reference to FIGS. 3 to 5, a housing having an open front end portion, a space portion formed therein, and a fastening portion formed at both side end portions thereof, and one mounted in the housing. It may include more than one speaker.

In addition, referring to FIG. 10, the display device according to another exemplary embodiment of the present invention may be provided with both ends of the front end portion of the speaker module and the grill portion of the case, and the front end of the speaker module when the speaker module vibrates. It includes an elastic gasket 157 that absorbs the vibration of the speaker module in a state in which the gap between the portion and the grill portion is sealed.

Specifically, the elastic gasket 157 is a continuous that is not cut off at the front end of the speaker module 100 to close the gap between the speaker module 100 and the grill portion 13a of the installation surface 13 of the case. It is preferred to have a shaped shape.

In addition, the elastic gasket 157 is preferably a bellows 157a for sealing a gap between the sound output part (front end) of the speaker module 100 and the grill part of the installation surface 13.

Therefore, when the speaker module 100 is driven by the bellows 157a, the vibration of the speaker module 100 may be absorbed in a state in which the gap between the front end portion and the grill portion of the speaker module 100 is sealed. have.

That is, although the speaker module described with reference to FIGS. 3 to 5 is mounted on the installation surface 13 by the guide member and the elastic member, the speaker module shown in FIG. 10 is mounted on the elastic gasket 157 having a sealing function and a buffer function. Is mounted.

Preferred embodiments of the present invention described above are disclosed for purposes of illustration, and those skilled in the art having various ordinary knowledge of the present invention may make various modifications, changes, and additions within the spirit and scope of the present invention. And additions should be considered to be within the scope of the following claims.

1 is a perspective view showing a display device according to an embodiment of the present invention.

2 is an exploded perspective view illustrating a main component constituting a display device according to an exemplary embodiment of the present invention.

3 is a rear view of the front cover shown in FIG.

4 is an enlarged view of a portion A of FIG. 3.

Figure 5 is a perspective view of the cutaway showing the main components of the speaker module related to the present invention.

6 is a perspective view of a speaker module related to the present invention.

FIG. 7 is a sectional view showing the main parts of a mounting state of the speaker module illustrated in FIG. 6; FIG.

8 is an exploded perspective view of a speaker module related to the present invention.

9 is a cross-sectional view taken along the line BB ′ of FIG. 8.

FIG. 10 is a sectional view showing the main parts of a mounting state of the speaker module illustrated in FIG. 8; FIG.

11 is a sectional view showing the principal parts of a mounted state of a speaker module according to the present invention;

Claims (11)

A case having a mounting portion provided at one side; A display module disposed in the case; A speaker module mounted to a mounting portion of the case; An elastic member disposed between the sound output unit of the speaker module and a mounting unit of the case and absorbing vibration of the speaker module; And And a guide member for guiding a vibrating motion according to the vibration direction of the speaker module in a state in which a gap between the sound output part of the speaker module and the mounting part of the case is sealed. The method of claim 1, The elastic member is a display device, characterized in that a plurality of springs respectively disposed in the edge portion of the sound output unit of the speaker module. The method of claim 1, The guide member is coupled to the front edge portion of the speaker module, the first gasket having an end extending toward the mounting portion to have a predetermined height to seal the gap between the speaker module and the mounting portion of the case; And Attached to the edge of the mounting portion of the case, the end portion of the first gasket is inserted, comprising a second gasket formed with a guide groove for guiding the reciprocating movement of the end portion of the first gasket when the speaker module vibrates Display device characterized in that. The method of claim 1, The guide member is coupled to the front edge portion of the speaker module, and seals the gap between the speaker module and the mounting portion of the case, the first gasket having a guide groove open toward the mounting portion of the case at the front edge portion; And A second gasket formed in an edge portion of the mounting portion of the case and inserted into the guide groove of the first gasket, and reciprocating in the guide groove of the first gasket when the speaker module vibrates; Display device. The method of claim 3, wherein And a depth of the guide groove is greater than a height of an end portion of the first gasket to be inserted. The method according to claim 3 or 4, And a cushion member disposed between the second gasket and an edge of the mounting portion of the case. The method of claim 1, The speaker module includes a housing having an open front end portion, a space portion formed therein, and fastening portions formed at both side end portions thereof; And And at least one speaker mounted in the housing. The method of claim 3, wherein And the first gasket and the second gasket are made of the same material. A case having a mounting portion provided at one side; A display module disposed in the case; A speaker module mounted to a mounting portion of the case; And Both ends are fixed to the sound output unit of the speaker module and the mounting unit of the case, respectively, and absorb the vibration of the speaker module in a state in which the gap between the sound output unit and the mounting unit of the speaker module is sealed when the speaker module vibrates. Display device comprising an elastic gasket. The method of claim 9, The speaker module includes a housing having an open front end portion, a space portion formed therein, and fastening portions formed at both side end portions thereof; And And at least one speaker mounted in the housing. The method of claim 9, The elastic gasket is a display device, characterized in that the bellows sealing the gap between the sound output portion of the speaker module and the mounting portion of the case.

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