KR101359836B1 - Speaker system and display device comprising the same - Google Patents

Abstract

The present invention relates to a speaker system and a display device including the same. In the present invention, since the contact area between the vibration plate and the exciter is increased, the effect of substantially increasing the output of sound in the high frequency band can be expected. In addition, in the present invention, since the exciter is fixed by a screw in a state in which the exciter is mounted in a sliding manner, an effect of simply replacing the exciter can be expected.

Display Units, Front Panel, Speaker System, Exciter

Description

Speaker system and display device including same {Speaker system and display device comprising the same}

The present invention relates to a display device, and more particularly, to a speaker system for reproducing sound and a display device including the same.

The display device provides a predetermined screen, and typically includes a speaker system for reproducing sound. In such a speaker system, a general speaker is separately embedded in a display device. Recently, an exciter for reproducing sound by vibrating a vibration plate may be built into a display device. WO 97/09859 (hereinafter referred to as 'quotation literature') discloses such exciters.

However, the conventional exciter disclosed in the cited document has the following problems.

First, the exciter disclosed in the citation is a plate-shaped speaker system or a surface sound method, and a separate system is mounted on the display device. That is, the exciter disclosed in the cited reference is not mounted directly on the display device. Therefore, in order to apply the excitation of the plate-shaped speaker system disclosed in the reference to the display device, the expensive plate-shaped speaker system is added, the disadvantage that the cost for manufacturing the display device increases.

In addition, when the excitation machine of the plate-shaped speaker system disclosed in the reference is used, a separate opening must be formed for each display device to mount the plate-shaped speaker system. Therefore, the process for manufacturing the display device is complicated.

And the excitation of the plate-shaped speaker system disclosed in the cited reference is relatively bulky. Therefore, there is a disadvantage that the volume of the display device is increased.

The present invention is to solve the conventional problems as described above, an object of the present invention is to provide a speaker system and a display device including the same configured to reduce the cost for the production of the product.

Another object of the present invention is to provide a speaker system and a display device including the same, which are configured to more easily manufacture a product.

It is still another object of the present invention to provide a speaker system configured to reduce the volume of a product and a display device including the same.

According to a feature of the present invention for solving the conventional problems as described above, the present invention includes a casing having a display module for reproducing an image therein; At least one exciter mounted on a rear surface of the casing and reproducing sound; .

According to another feature of the invention, the present invention comprises a casing having a display module for reproducing the image therein; A connection member having one surface in contact with a rear surface of the casing; And an excitation unit fixed to the other surface of the connection member and reproducing sound; .

According to another feature of the invention, the present invention comprises a guide rib provided on the rear surface of the front panel; A slider mounted along the guide rib and sliding on one surface of the front panel; An excitation unit fixed to the other surface of the slider to reproduce sound; And a fixing member for fixing the slider in close contact with the back surface of the casing; .

According to another feature of the invention, the present invention and the casing including a front panel; A display module provided inside the casing and reproducing an image; The speaker system according to any one of claims 1 to 15, which reproduces sound; .

According to the speaker system and the display device including the same according to the present invention, the cost for manufacturing the display device is reduced, the manufacturing of the display device is simplified, and the volume of the display device is reduced.

Hereinafter, an embodiment of a speaker system and a display device including the same according to the present invention will be described.

First, a first embodiment of a speaker system according to the present invention will be described in more detail with reference to the accompanying drawings.

1 is an exploded perspective view showing a display device including a first embodiment of a speaker system according to the present invention, Figure 2 is an exploded perspective view showing a first embodiment of the present invention.

Referring to this, the casing 110 forming the appearance of the display device 100 includes a front panel 120 and a back cover 130. The front panel 120 forms an outer appearance of a front border of the display device 100. In addition, the back cover 130 forms both sides of the rear and top and bottom surfaces of the display apparatus 100. Of course, the front panel 120 may form both side surfaces of the front and top and bottom surfaces of the display apparatus 100.

The display module 140 is installed inside the casing 110, that is, between the front panel 120 and the back cover 130. The display module 140 substantially plays a role of playing an image.

On the other hand, a mounting frame 121 is provided below the front panel 120. The mounting frame 121 is formed in a rectangular frame shape long left and right. The mounting frame 121 extends inclined downward from the bottom of the front panel 120 to the rear.

As shown in an enlarged view in FIG. 1, the mounting frame 121 is provided with a mounting portion 122. The mounting portion 122 is formed by relatively stepping the inner edge portion of the mounting frame 121 relative to other parts.

A vibration plate 150 is mounted on the mounting frame 121 and substantially the mounting portion 122. The shaking plate 150 vibrates for the reproduction of sound and at the same time transmits vibration to the front panel 120. The shaking plate 150 is formed in a rectangular plate shape long left and right corresponding to the size and shape of the mounting portion 122. Although not shown, the shaking plate 150 is fixed by a fastener such as a screw in a state in which it is mounted on the mounting frame 121.

In addition, since the shaking plate 150 is mounted on the mounting frame 121, the shaking plate 150 substantially forms a front lower exterior of the display device 100. Therefore, various decorations for improving the front appearance of the display device 100 may be provided on the front surface of the vibration plate 150.

As shown in FIG. 2, a guide rib 151 is provided on the rear surface of the shaking plate 150. The guide rib 151 is for mounting the exciter 160 to be described below. In the present embodiment, two guide ribs 151 are provided at both ends of the rear surface of the vibration plate 150, but the number and positions of the guide ribs 151 are not limited thereto. The guide ribs 151 are each formed in a U shape that is open upward.

A guide groove 152 is formed between the rear surface of the vibration plate 150 and the guide rib 151. The guide groove 152 is where the slider 170, which will be described below, slides.

And each of the elastic fixing part 153 is provided in the guide groove 152 facing each other. The elastic fixing part 153 serves to fix the slider 170 in a state in which the slider 170 slides along the guide groove 152. That is, the elastic fixing part 153 is compressed by the slider 170 sliding along the guide groove 152, so that the slider 170 is fixed by the interference fit.

In addition, a plurality of bosses 155 are provided on the rear surface of the vibration plate 150 adjacent to the guide rib 151. The boss 155 extends rearward orthogonally to the rear surface of the vibration plate 150 adjacent to both sides of each of the guide ribs 151. At this time, a straight line connecting the bosses 155 adjacent to both sides of each of the guide ribs 151 is inclined by a predetermined angle in the longitudinal direction of the vibration plate 150. This is to prevent the acoustic vibration of the exciter 160 is attenuated by the boss 155. In addition, screw bosses 156 to which screws S1 to be described below are fastened are formed in the boss 155, respectively.

Four excitation units 160 are mounted on the rear surface of the shaking plate 150. The exciter 160 generates an acoustic vibration for reproducing sound. The acoustic vibration of the exciter 160 is transmitted to the vibration plate 150 and the front panel 120. The exciter 160 is provided with a protrusion 161, respectively. The protrusion 161 extends to the outside of the exciter 160. The protrusion 161 is formed with a through hole 162 through which the screw S1 fastened to the screw hole 156 passes.

In order to mount the exciter 160 in a sliding manner, the sliders 170 are fixed to the vibration generators of the exciter 160, respectively. The slider 170 serves to mount the exciter 160 by sliding along the guide groove 152. In addition, the slider 170 serves to substantially increase the contact area between the vibration plate 150 and the exciter 160. To this end, the slider 170 is formed to be at least the size of the vibration generating portion of the exciter (160). In the present embodiment, the slider 170 is formed in a rectangular plate shape that at least circumscribes the vibration generating portion of the exciter 160. In addition, the slider 170 is fixed by being substantially forcibly fixed by the elastic fixing part 153 in a state in which the slider 170 is slid along the guide groove 152, and one surface thereof is on the rear surface of the vibration plate 150. Contact.

In the state where the slider 170 slides along the guide groove 152 and is fixed by the elastic fixing part 153, a screw S1 is used to more firmly fix the exciter 160. . The screw S1 passes through the through hole 162 and is fastened to the screw hole 156.

Meanwhile, a panel side vibration damping pad 180 is provided between the mounting frame 121 and the vibration plate 150. The panel side vibration damping pad 180 may include the front panel 120 and the vibration plate 150 in a process in which acoustic vibrations of the exciter 160 are transmitted from the vibration plate 150 to the front panel 120. It prevents the occurrence of noise at the contact part.

In addition, a cover side damping pad 190 is provided between the front panel 120 and the back cover 130. The cover side damping pad 190 serves to prevent a phenomenon in which the acoustic vibration of the exciter 160 is transmitted from the front panel 120 to the back cover 130.

Hereinafter, a process of mounting the exciter on the vibration plate in the first embodiment of the speaker system according to the present invention will be described.

First, the slider 170 is fixed to the vibration generating unit of the exciter 160. At this time, the excitation unit 160 and the slider 170 may be fixed by double-sided tape or adhesive. As such, in the state where the exciter 160 is fixed, the slider 170 is slid along the guide groove 152. In the process of sliding the slider 170 along the guide groove 152, the elastic fixing portion 153 is compressed by the slider 170. Therefore, the slider 170 may be effectively fitted to the guide rib 151 by the elastic force of the elastic fixing part 153.

In the state in which the slider 170 slides along the guide groove 152, the exciter 160 is more firmly fixed using the screw S1. In other words, the screw S1 passes through the through hole 162 of the exciter 160 and is fastened to the screw hole 156 of the vibration plate 150, whereby the exciter 160 makes the vibration plate 150. More firmly). In addition, the contact of the exciter 160, the slider 170, and the vibration plate 150 may be substantially improved by the screw S1.

In this way the so exciter 160 is fixed by the screw (S1) in the mounted state in a sliding manner by the slider (170), the said exciter (160) with double-sided tape or adhesive or the like dither plate ( compared to a case of fixing a 150) can be replaced for the repair of the W oscillator 160 it can be made more easily. That is, the worker can be replaced more simply by removing the screw (S1), by removing the exciter 160 in a sliding manner.

Next, a process in which an exciter reproduces sound according to a first embodiment of a speaker system according to the present invention will be described with reference to the accompanying drawings.

 3 is a graph showing the acoustic frequency characteristics reproduced by the exciter in the first embodiment of the present invention.

The acoustic vibration generated by the exciter 160 is transmitted to the vibration plate 150 through the slider 170. However, since the slider 170 is larger than the vibration generating part of the exciter 160, the contact area between the vibration plate 150 and the exciter 160 is substantially increased. Therefore, among the sounds generated by the acoustic vibration of the exciter 160, the sound of a relatively high frequency band is efficiently reproduced.

This is shown in detail in FIG. 3. As shown in FIG. 3, the acoustic frequency curve 1 when the exciter 160 is mounted on the vibration plate 150 by a double-sided tape and the vibration plate 160 by the adhesive are the vibration plate. The acoustic frequency curve 3 when the excitation unit 160 is mounted on the vibration plate 150 using the slider 170 is 1000 compared to the acoustic frequency curve 2 when the mounting unit 150 is mounted on the 150. It can be seen that the output of the sound is relatively increased in the range of ~ 10000 Hz.

And Together  Above shown in 3 Exciter 160  remind On the hover plate (150)  Each at the sound wave level according to the means of mounting Peak point  The comparison is shown below.

frequency( Hz ) Double-sided tape( db ) glue( db ) Slider (db) 1000-2000










73.00 81.73 77.80 79.32 72.70 74.97 78.73 81.24 78.85 77.06 77.18 69.62 75.99 82.58 80.59 71.08 82.22 79.58 68.34 80.01 74.69 78.35 75.75 72.09 64.33 67.51 70.13 72.21 73.63 60.60 66.52 73.00 70.58 68.12 75.51 74.11

frequency( Hz ) Double-sided tape( db ) glue( db ) Slider ( db ) 2000 ~ 3000





69.81 74.55 70.23 71.48 76.61 69.43 71.60 70.11 72.90 69.14 70.42 73.59 66.61 68.57 71.42 69.83 72.26 72.27 57.81 64.37 71.02

frequency( Hz ) Double-sided tape( db ) glue( db ) Slider ( db ) 3000-4000



69.05 68.69 76.44 63.96 75.24 76.23 63.65 72.35 71.67 62.93 73.40 72.05 64.44 71.05 74.39

frequency( Hz ) Double-sided tape( db ) glue( db ) Slider ( db ) 4000-5000


65.40 68.32 70.58 68.27 61.55 63.20 70.76 66.75 63.30 69.23 61.93 66.47

frequency( Hz ) Double-sided tape( db ) glue( db ) Slider ( db ) 5000 ~ 6000

60.15 66.94 61.89 64.82 58.95 65.30 65.26 67.35 71.36

frequency( Hz ) Double-sided tape( db ) glue( db ) Slider ( db ) 6000 65.09 65.54 66.82

Tables 1 to 6 show frequency bands 1000 to 2000, respectively. Hz  Between 2000 and 3000 Hz  Between 3000 and 4000 Hz  Between 4000 and 5000 Hz  Between 5000 and 6000 Hz  Between and 6000 Hz Above by double-sided tape, adhesive and slider After the exciter (160)  remind On the shaking plate 150  The following table compares sound wave levels in the installed state. Referring to Tables 1 to 6 above, as a whole Exciter 160  remind On the shaking plate 150  It can be seen that the mounting by the slider 170 shows a relatively high sound wave level compared to the mounting by double-sided tape or adhesive.

In addition, the acoustic vibration of the exciter 160 transmitted to the vibration plate 150 is transmitted to the front panel 120 again. Therefore, the front panel 120 as well as the vibration plate 150 vibrates substantially to reproduce sound. On the other hand, the noise at both contact portions in the process in which the vibration of the exciter 160 is transmitted from the vibration plate 150 to the front panel 120 is prevented by the panel side damping pad 180. In addition, the acoustic vibration of the exciter 160 is not transmitted to the back cover 130 by the cover side damping pad 190.

Next, a second embodiment of a speaker system according to the present invention will be described in detail with reference to the accompanying drawings. Detailed description of the same configuration as in the first embodiment of the present invention will be omitted.

4 is an exploded perspective view showing a second embodiment of a speaker system according to the present invention.

Referring to this, in the present embodiment, a mounting opening 271 is formed in the slider 270 to fix the exciter 260 to the slider 270. That is, the vibration generating unit of the exciter 260 is inserted into and fixed to the seating opening 271, thereby fixing the exciter 260 and the slider 270. Therefore, in the present embodiment, the exciter 260 is inserted into the seating opening 271, whereby the exciter 260 can be more firmly fixed to the slider 270. At this time, the exciter 260 The vibration generating unit may be more firmly fixed by an adhesive or the like in a state of being seated on the seating opening 271 . The vibration plate 250, the guide rib 251, the elastic fixing part 253, the boss 255, the screw hole 256, and the screw S2, which are other components of the present embodiment, are the first embodiment of the present invention. Is the same as

Next, a third embodiment of a speaker system according to the present invention will be described in more detail with reference to the accompanying drawings. Detailed description of the same configuration as in the first and / or second embodiment of the present invention will be omitted.

5 is an exploded perspective view showing a third embodiment of a speaker system according to the present invention.

Referring to this, the present embodiment includes a fixing ring 380 for fixing the exciter 360 to the slider 370. The fixing ring 380 is provided at the tip of the outer circumferential surface of the vibration generator of the exciter 360. The excitation unit 360 and the fixing ring 380 may be fixed by using interference fit and / or adhesive. The fixing ring 380 is fixed to one surface of the slider 370. According to this embodiment, the exciter 360 can be more firmly fixed to the slider 370. The vibration plate 350, the guide rib 351, the elastic fixing part 353, the boss 355, the screw hole 356, the protrusion 361, the through hole 362 in the present embodiment. , Screw S1 is the same as the first or / and second embodiment of the present invention.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims and their equivalents. .

In the first to third embodiments of the present invention described above, the slider is mounted to the guide rib in a sliding manner. However, the slider may perform only a function of substantially increasing the contact area between the vibration plate and the exciter. Thus, the slider may be fixed to the vibration plate simply by being fixed to the exciter and by fixing the exciter by the screw. In this case, the slider may be referred to as a connecting member.

In addition, in the first to third embodiments of the present invention, the exciter is fixed by the screw in a state where the exciter is mounted by the slider. However, the exciter may be fixed by the interference fixing by the elastic fixing part without using the screw.

In the first to third embodiments of the present invention, the exciter is mounted on the vibration plate, but is not necessarily limited thereto. That is, the excitation unit may be mounted on any one of the front panel and the back cover.

According to the speaker system and the display device including the same according to the present invention configured as described above it can be expected the following effects.

First, according to the present invention, a relatively low-cost exciter is used for sound reproduction. As a result, the cost for manufacturing a display device can be reduced, resulting in a more affordable product.

In the present invention, the excitation device for reproducing the sound is mounted on the rear surface of the front panel or the shaking plate. Therefore, the manufacturing of the display device is made simpler.

According to the present invention, a relatively small volume exciter is used for sound reproduction. Therefore, it is possible to reduce the volume of the display device, especially the thickness of the display device, it is possible to provide a slimmer display device.

In addition, in the present invention, the contact area between the front panel or the vibration plate and the exciter is substantially increased by the slider. Therefore, the output of the sound of the high frequency band is increased.

1 is an exploded perspective view showing a display device including a first embodiment of a speaker system according to the present invention;

2 is an exploded perspective view showing the first embodiment of the present invention.

3 is a graph showing the acoustic frequency characteristics reproduced by the exciter in the first embodiment of the present invention.

Figure 4 is an exploded perspective view showing a second embodiment of a speaker system according to the present invention.

5 is an exploded perspective view showing a third embodiment of a speaker system according to the present invention;

Claims (16)

A casing having a display module for reproducing an image therein; At least one exciter mounted on a rear surface of the casing and reproducing sound; Speaker system comprising a. The method of claim 1, The casing comprises a front panel, The exciter is a speaker system that is mounted in a sliding manner on the back of the front panel. The method of claim 1, The exciter, the speaker system is mounted to slide the slider fixed to one side of the exciter along the guide rib provided on the back surface of the casing. A casing having a display module for reproducing an image therein; A connection member having one surface in contact with a rear surface of the casing; And An excitation unit fixed to the other surface of the connection member and reproducing sound; Speaker system comprising a. 5. The method of claim 4, And the connecting member is a slider mounted by sliding along a rear surface of the casing. 6. The method of claim 5, The slider is mounted to slide along the guide rib provided on the back of the casing. 5. The method of claim 4, The connecting member has a relatively large area compared to the acoustic vibration generating portion of the exciter. The method of claim 6, The casing comprises a front panel, The connection member is provided with a seating opening corresponding to the shape of the exciter, And the exciter mounted on the connection member through the seating opening is in close contact with the rear surface of the front panel in a state in which the connection member slides along the guide rib. 5. The method of claim 4, The speaker system further comprises a fixing ring for fixing the excitation and the connecting member. A casing including a front panel; Guide ribs provided on a rear surface of the front panel; A slider mounted along the guide rib and sliding on one surface of the front panel; An excitation unit fixed to the other surface of the slider to reproduce sound; And A fixing member for fixing the slider in close contact with the rear surface of the casing; Speaker system comprising a. 11. The method of claim 10, The fixing member is an elastic fixing device provided between the guide rib and the slider. 11. The method of claim 10, Wherein: A boss provided on the rear surface of the casing, A through hole formed in the exciter, and And a fastener fastened to the boss by passing through the through hole. 11. The method of claim 10, The guide rib is provided in the shaking plate mounted on the lower portion of the front panel. 14. The method of claim 13, The vibration plate is mounted to the mounting frame provided on the lower portion of the front panel speaker system. 14. The method of claim 13, The shaking plate is mounted to a mounting frame extending inclined downward from the bottom of the front panel to the rear. A casing including a front panel; A display module provided inside the casing and reproducing an image; The speaker system according to any one of claims 1 to 15, which reproduces sound; Display device comprising a.

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