JP4103860B2 - Flat panel display device with speaker device - Google Patents

Description

In the present invention, a duct is attached to each of a plurality of openings (ports) provided in the speaker box, and a part of the sound wave radiated to the back surface of the speaker unit is radiated through the plurality of ducts in phase with the sound wave from the front surface. The present invention relates to a flat panel display device provided with a speaker device for the purpose of enhancing the bass part.

Conventional speaker device, for example, those as described in Patent Document 1. Patent Document 1 describes a bass reflex type speaker system in which a speaker unit is arranged in front of a port. This speaker system is characterized in that “in a bass reflex type speaker system having two or more speaker units, a speaker unit is arranged in front of a port and a sound absorbing material is arranged between the port and the speaker unit”.

  According to the speaker system having such a configuration, “unnecessary sound generated from the back surface of the speaker and unnecessary sound radiated from the port can be removed with one sound absorbing material, and the speaker system can be reduced in size. It is expected to be effective.

  As another conventional speaker device, for example, there is one described in Patent Document 2. Patent Document 2 describes a speaker device that converts an electrical signal into an acoustic signal. This speaker device is composed of “a front chamber portion having an opening on the front side, an acoustic resistance member attached by closing the opening, and the front chamber portion via a partition wall portion with respect to the front chamber portion. A rear unit provided on the rear side, a speaker unit attached to the partition, the sound emitting unit facing the front chamber, and the back unit facing the rear chamber, and the rear chamber And a hollow duct that is disposed toward the front side and allows the inside of the rear chamber portion to communicate outwardly with the front side ”.

According to the speaker device having such a configuration, “the input resistance characteristic (braking characteristic) is good, the conversion efficiency of the electric signal into sound is good, and the frequency-sound pressure characteristic of the reproduced sound is good. In addition, it is possible to reproduce sound with good sound quality without a sense of sound delay. "
Japanese Patent Laid-Open No. 11-41680 (2nd page, FIG. 1) JP-A-9-93686 (3rd page, FIG. 1)

However, in the conventional speaker device as described above, in the case of the invention described in either of Patent Documents 1 and 2, the duct is extended in a direction parallel to the direction in which the sound waves of the speaker unit are emitted. It was. Therefore, the length in the depth direction of the speaker box in which the speaker unit and the duct are accommodated is increased, the depth dimension of the speaker device is large, and the speaker device is enlarged in the depth direction.

The problem to be solved is that in the conventional speaker device, the duct is extended in a direction parallel to the direction in which the sound wave of the speaker unit is radiated. It is the point that it is enlarged.

Invention of Claim 1 of this application is a flat panel display apparatus provided with the flat panel display and the speaker apparatus arrange | positioned on the back side of the flat panel display, Comprising: A speaker unit is attached to a speaker apparatus. And a plurality of openings that are connected to the plurality of openings provided in the speaker box and have the same number of ducts as the plurality of openings accommodated in the speaker box. in the surface the speaker unit is substantially orthogonal surfaces which are made with the attachment, provided arranged substantially line symmetric or substantially point symmetrically on both sides around a speaker unit, further, a plurality of openings, inside the speaker box The box side connection part which protrudes in the box side connection part and the duct side of the duct Of connection portion, the one connection portion is provided a tapered portion, and the other connecting portion is provided with a tapered receiving portion fitted to the tapered portion, a plurality of ducts, substantially line symmetrical on both sides of the speaker unit Or it is arrange | positioned so that it may become substantially point-symmetric, and it makes it the most main characteristics to have extended the direction where several ducts extend in the direction substantially orthogonal to the direction where the sound wave of a speaker unit is radiated | emitted.

In the invention according to claim 2 of the present application, the speaker box includes a box main body in which a rear portion facing the rear side of the flat panel display is opened and a speaker unit is attached to a front portion opposite to the rear portion, and the box. And a lid that is detachably mounted on the back surface of the main body, and has openings at least at two locations on the upper surface, lower surface, left side, and right side of the box body.

The invention according to claim 3 of the present application, the plurality of ducts, the fixing piece for screwing the boss of the speaker box is provided, providing a slope portion inclined toward the box side connecting portion to the fixed piece At the same time, the boss is provided with an oblique receiving surface portion inclined in the same direction corresponding to the inclined surface portion, and when the screw is fixed, the inclined surface portion is moved along the oblique receiving surface portion and the duct side connecting portion is pressed against the box side connecting portion. It is characterized by.

The invention according to claim 4 of the present application is characterized in that a pair of fixed pieces are provided on both sides of the center line of the duct, and a pair of bosses are provided at positions corresponding to the pair of fixed pieces of the speaker box. Yes.

According to the invention according to claim 1 of the present application, a plurality of openings are provided in a surface substantially orthogonal to a surface to which the speaker unit of the speaker box is attached, and a plurality of ducts connected to the plurality of openings are provided. Since the speaker unit is configured to extend in a direction substantially perpendicular to the direction in which sound waves are emitted, it is possible to reduce the thickness of the speaker box, and for electronic devices that are extremely demanding to be thin, such as flat panel display devices. A flat panel display device including a speaker device suitable for use can be provided. Furthermore, a plurality of openings and a plurality of ducts of the speaker box are arranged so as to be line symmetric or point symmetric with respect to the speaker unit, and a box side connection portion is provided in the plurality of openings, and the box side connection is provided. Part of the duct and the duct side connection part of the duct, one of the connection parts is provided with a taper part, and the other connection part is provided with a taper receiving part. The sound can be radiated in a well-balanced manner with the sound waves from the front through the pair of ducts, and the sound waves in the bass can be efficiently enhanced , and the connection between the speaker box and the duct should be highly airtight. Can be done easily and reliably.

According to the invention according to claim 2 of the present application, the speaker box is composed of a box body and a lid body, and openings are provided in at least two locations on the upper surface portion, the lower surface portion, the left or right side portion of the box body. By adopting a configuration in which a plurality of ducts are attached, the plurality of ducts can be effectively attached to a speaker box with a simple configuration, and the sound waves in the bass can be efficiently increased.

According to the invention according to claim 3 of the present application, the plurality of ducts are provided with the fixing pieces having the slope portions, and the bosses of the speaker boxes that support them are provided with the oblique receiving surface portions. At the time of screwing work, a force directed to the box side connection part is applied to the duct based on the tightening force by the screw, the fitting force between the duct side connection part and the box side connection part is increased, and the duct is attached to the speaker box. The connection can be made securely and firmly.

According to the invention of claim 4 of the present application, the bass reflex duct is balanced with respect to the speaker box by providing the duct with a pair of fixed pieces and a pair of bosses corresponding thereto. It can be fixed well and can prevent the possibility of sound leakage from the connecting portion.

A flat panel display device equipped with a speaker device suitable for use in an electronic device that can be thinned, such as a flat panel display device , which is extremely demanded to be thinned, has been realized with a simple configuration.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIGS. 1-12 demonstrates the example of embodiment of the flat panel display apparatus provided with the speaker apparatus based on this invention. 1 is a front perspective view of a flat panel display device equipped with the speaker device of the present invention, FIG. 2 is a rear perspective view, and FIG. 3 is a perspective view showing the inside of the box body of the speaker box. 4 is a perspective view before the lid is fitted to the box body, FIG. 5 is a perspective view after the lid is similarly fitted to the box body, and FIGS. 6A and 6B are cross-sectional views before and after fitting the lid to the box body. 7 is an explanatory view showing an enlarged main part of FIG. 4, FIGS. 8A and 8B are explanatory views showing an enlarged main part of FIGS. 6A and 6B , and FIGS. 9A and 9B are a front view and a bottom view showing a part of the duct . 10A and 10B are explanatory diagrams before and after connecting the duct , FIG. 11 is a sectional view of the duct connecting portion, and FIGS. 12A, 12B and 12C are explanatory diagrams showing other examples of the arrangement of the duct .

  As shown in FIGS. 1 and 2, the flat panel display device 1 includes a display main body 2 and a stand 10 that supports the display main body 2.

The display main body 2 has a large screen 3 of 37 to 50 inches on the front surface, and a television as a flat panel display device having a plasma type flat panel display formed with an ultra-thin body having a thickness of less than 10 cm. John device. In the display main body 2, speakers 4 and 5 are incorporated on both the left and right sides of the screen 3, and stereo sound is output from the left and right speakers 4 and 5. In addition, from the speakers 4 and 5 of the display main body 2, sound in the middle and high range is mainly output.

  On the other hand, the stand 10 for supporting the display main body 2 is configured such that a leg 12 is erected on a base plate 11 in contact with a floor surface, and a pedestal plate 13 is horizontally fixed thereon, and a display is displayed on the pedestal plate 13. The main body 2 is placed and supported. In addition, two supports 14 and 15 that support the back side of the display body 2 are erected on the stand 10 vertically from both left and right ends of the base plate 13. The main body 2 is fixed and integrated.

  In addition, in this stand 10, the leg 12 is comprised so that rotation to the left and right and inclination adjustment to the front and back is possible with respect to the base board 11, and, thereby, the angle of the screen of the display main body 2 can be variably adjusted. It can be done.

In the flat panel display device 1 of the present embodiment, the speaker box incorporating the speaker units 21 and 22 is supported between the upper portions of the left and right support columns 14 and 15 erected on the back side of the stand 10. 20 is attached. The speaker units 21 and 22 built in the speaker box 20 are speaker units (woofers) dedicated to low-pitched sound reproduction, and are electrically connected to the display body 2 mounted on the stand 10 to output heavy bass. is there.

  In this flat panel display device 1, the maximum output of the left and right speakers 4, 5 of the display body 2 is 25 W, and the maximum output of the speaker units 21, 22 on the back side of the stand 10 is 50 W. Are combined to complete a sound system with a total volume of 100 W.

  As shown in FIGS. 3 to 6 and the like, the speaker box 20 includes a box body 23 having a back surface opened and a lid 24 that is detachably attached to the back surface of the box body 23. It is configured. The box body 23 includes a horizontally long rectangular front portion 23a, an upper surface portion 23b continuous with the upper edge of the front surface portion 23a, a lower surface portion 23c continuous with the lower edge of the front surface portion 23a, and a front surface portion 23a. The left side surface portion 23d and the right side surface portion 23e are continuous on the left and right sides.

As shown in FIG. 3, two box sides to which two speaker mounting portions 25 a and 25 b for mounting two speaker units 21 and 22 and two ducts 26 and 27 are connected are provided inside the box body 23. Connection portions 28a, 28b, duct support portions 29, 29 for supporting the two ducts 26, 27, and two types of bosses 30a, 30b for attaching the lid 24 are provided.

  The two speaker mounting portions 25a and 25b are arranged vertically in a line in the vertical direction at the center of the inner surface of the front portion 23a. A large number of through holes for radiating sound waves to the outside are provided on the front surfaces of the two speaker mounting portions 25a and 25b. The two speaker units 21 and 22 are detachably fixed to the speaker mounting portions 25a and 25b by fixing screws (not shown).

The two box side connection portions 28a and 28b are provided at a predetermined interval on the lower surface portion 23c of the box body 23 so as to be line-symmetric with respect to the two speaker units 21 and 22 in the left-right direction. Each box side connection part 28a, 28b consists of a ring-shaped projection part slightly narrowed inward, and the hole opened in the center forms the opening part 31 connected to the hole of the ducts 26, 27. . As shown in FIGS. 10A and 11, a tapered portion 32 having a tapered conical shape is provided at the tips of the box side connection portions 28a and 28b. Each box-side connecting portion 28a, the 28b, the duct side connecting portion 26a of the duct 26, 27, 27a are respectively fitted.

The two ducts 26 and 27 are the same and have a configuration as shown in FIGS. 9A and 9B. The ducts 26 and 27 are a pipe-shaped duct main body 33, a pair of fixing pieces 34 and 34 provided on the outer peripheral surface of the duct main body 33, and the outer peripheral surface of the duct main body 33 and provided at one end in the axial direction. And a stopper portion 35. A taper receiving portion 36 having the same inclination angle that is fitted to each taper portion 32 of the box side connection portions 28a and 28b is provided at the end portion of the duct body 33 on the stopper portion 35 side.

The pair of fixed pieces 34, 34 are formed in a bilaterally symmetrical shape so as to protrude outward in the diametrical direction in the axially intermediate portion of the duct body 33. Each fixed piece 34 is developed in the axial direction and provided with a predetermined interval in the vertical direction, and an appropriate inclination angle between the upper surface portion 34a and the lower surface portion 34b and the upper surface portion 34a and the lower surface portion 34b. And a sloped portion 34c connected to each other. A screw hole 37 is provided in the upper surface portion 34 a, and the screw hole 37 extends in the axial direction of the duct body 33. The ducts 26 and 27 are fastened and fixed to the box body 23 by fixing screws 38 inserted into the screw holes 37.

The stopper portion 35 is provided for the purpose of positioning the ducts 26 and 27 in the box body 23. The stopper portion 35 is a protrusion having a U-shaped planar shape for forming the engagement groove 40, and an introduction portion 40 a that is widened in a tapered shape is provided at the entrance of the engagement groove 40. As shown in FIGS. 10A, 10B, and 11, the positioning groove 41 provided at the lower part of the box side connection portions 28a, 28b of the box body 23 is engaged with the engagement groove 40. By engagement of the positioning piece 41, an axial direction box side connecting portion 28a of the duct 26, 27, and moved to 28b side, and the rotation of the duct 26, 27 is prevented.

A pair of duct support portions 29, 29 that support the ducts 26, 27 in a state where they are connected to the box side connection portions 28a, 28b are provided on the front portion 23a of the box body 23 corresponding to the pair of fixed pieces 34, 34. Each is erected on the inner surface. Each duct support portion 29 has a reinforcing piece 42 projecting toward the box side connecting portions 28a, 28b, and is inclined at the upper end of the reinforcing piece 41 in the same direction corresponding to the inclined portion 34c of the fixed piece 34. The slope receiving portion 41a is provided.

  As shown in FIG. 3, the first boss 30 a of the two types of bosses 30 a and 30 b is provided in the middle of the inner surface of the upper surface portion 23 b formed slightly upward of the box body 23. In this embodiment, the first boss 30a is set at five places with appropriate intervals in the lateral direction. The second boss 30b is an inner surface of the front portion 23a of the box body 23, and is erected along the lower surface portion 23c and the left and right side portions 23d and 23e. In this embodiment, there are eight second bosses 30b. In addition, screw holes that open to the upper surfaces of the bosses 30a and 30b are provided in the upper portions of the bosses 30a and 30b.

  The lid body 24 that can open and close the back surface of the box body 23 having such a configuration has a configuration as shown in FIGS. The lid 24 is made of a plate that can cover the entire back surface of the box body 23. At the positions corresponding to the two types of bosses 30a and 30b of the box body 23 of the lid body 24, screw seat holes 44 are provided. Since these seat holes 44 are all provided along the periphery of the lid body 24, a plurality of seat holes 45 (in this embodiment) for screwing the central portion of the lid body 24 to the box body 23 side are provided. 4 places).

  In this embodiment, the lid body 24 is screwed to the box body 23 by 17 fixing screws. In the vicinity of each of the seat holes 44 and 45, an identification mark 50 (number in this embodiment) is displayed as a guide for screwing work when the lid 24 is assembled to the box body 23. The identification marks 50 are displayed in the numerical order that is the order of the screw tightening. First, the identification marks 50 are arranged so as to go from the central portion of the outer peripheral edge toward the corner portion, and finally to complete the tightening operation at the central portion. Yes.

  By tightening the fixing screws in the order of the numbers of the identification marks 50, the lid body 24 can be tightened in a balanced manner over the entire surface of the box body 23, and the entire outer peripheral edge of the lid body 24 is secured to the box body. It is possible to improve the sealing performance by evenly contacting the entire outer peripheral edge of 23. The identification mark 50 is preferably formed by marking the tip of a protruding pin for taking out the lid 24 from the mold to be injection-molded, and using the protruding pin mark. In this case, it is not necessary to provide special equipment or parts for imprinting the identification mark 50, and an existing mold can be used, so that the mold cost is not increased. Reference numeral 47 shown in FIGS. 4 and 5 is a screwing portion for fixing the speaker box 20 to the arms 14 and 15.

  The joint portion between the box body 23 and the lid body 24 fitted in this manner has a sealed structure as shown in an enlarged cross-sectional view in FIGS. 7 and 8A and 8B. That is, the box main body 23 is provided with a tapered groove 52 having a V-shaped cross-section continuously over the entire circumference of the outer edge portion. On the other hand, the lid body 24 is provided with a tapered protrusion 53 having a V-shaped cross section continuously over the entire circumference of the outer edge portion.

  As described above, the tapered groove 52 is formed in the peripheral edge portion of the box body 23 by the outer inclined surface 52a inclined outward and the inner inclined surface 52b formed of an inclined surface folded substantially perpendicular to the outer inclined surface 52a. To do. Corresponding to the outer inclined surface 52a and the inner inclined surface 52b, an outer inclined surface 53a and an inner inclined surface 53b made of an inclined surface turned substantially perpendicular to the outer inclined surface 53a are provided and tapered. A ridge 53 is formed. By taper fitting the taper ridge 53 to the taper groove 52, the adhesion of the lid body 24 to the box body 23 can be made extremely high.

  The speaker box 20 having such a configuration can be easily assembled as follows, for example. As shown in FIG. 3, first, predetermined speaker units (woofers) 21 and 22 are attached to two speaker attachment portions 25a and 25b of the box body 23 by screwing.

Next, the two ducts 26 and 27 are assembled to the two box side connection portions 28a and 28b of the box body 23, respectively. This assembly operation can be performed as follows. First, as shown in FIG. 10A, the duct side connection portion 26a (or 27a) provided at one end of the duct body 33 is caused to face the box side connection portion 28a (or 28b). At this time, the lower surface portions 34 b of the pair of fixing pieces 34, 34 provided in the ducts 26, 27 are in contact with the upper surfaces of the pair of duct support portions 29, 29 of the box body 23.

Next, the slope portion 34c of each fixed piece 34 is moved along the slope receiving portion 42a of the reinforcing piece 42 provided integrally with each duct support portion 29, and as shown in FIG. 10B, the duct 26 (or 27). The duct side connecting portion 26a (or 27a) is fitted to the box side connecting portion 28a (or 28b). At this time, the positioning pieces 41 of the box body 23 are engaged with the engaging grooves 40 of the stopper portions 35 of the ducts 26 and 27, respectively.

Subsequently, as shown in FIG. 3, by tightening the fixing piece 34 with the fixing screw 38, the reaction force from the inclined surface receiving portion 42 a causes the duct 26 (or 27) to be connected to the box side connecting portion 28 a (or 28 b) side. A force to be pressed is applied. Therefore, as shown in FIG. 11, the duct 26 (or 27) is connected in a state where the duct side connection portion 26a (or 27a) is pressed against the box side connection portion 28a (or 28b) and is firmly fitted. The

  Thereafter, as shown in FIGS. 4 to 6A and B, the lid 24 is fitted into the opening on the back side of the box body 23. Accordingly, as shown in FIGS. 7, 8 </ b> A, and B, the tapered protrusion 53 provided on the outer peripheral edge of the inner surface of the lid body 24 is fitted in the tapered groove 52 provided on the outer peripheral edge of the opening of the box body 23. Is done. In this taper fitting state, the fixing screws are tightened in the order of numbers displayed on the identification marks 50 provided on the lid body 24, and the lid body 24 is fastened and fixed to the box body 23 with a plurality of fixing screws.

  At this time, a taper groove 52 made of a V-shaped recess is provided on one side of the entire circumference of the joint between the box body 23 and the lid 24, and a taper ridge 53 made of a V-shaped protrusion matching the other is provided on the other side. Since it is configured to be provided and screwed, it is possible to correct the escape of the side between the screwing portions and the occurrence of distortion and to make them closely contact each other. In addition, with regard to fastening with fixing screws, it is arranged so that the fastening force is evenly arranged as much as possible, and tightening is started in the order from the center of the side of the lid body 24 toward the corner portion. Since an identification mark is provided on the product, an ideal sealed environment can be realized by mass production.

  Furthermore, according to the present embodiment, since it is not necessary to use a sealing material, the cost of those parts can be reduced. In addition, since a sealing material is not used, it is very favorable for environmental problems, and the assembling and disassembling of the speaker box can be improved. Further, all the fixing screws for fixing the lid body 24 to the box body 23 are accommodated in seat holes 44 and 45 provided in the lid body 24 so that the heads of the fixing screws are exposed on the surface of the lid body 24. Therefore, a stable fastening state can be obtained without showing the screw head on the appearance.

In the speaker device having such a configuration, the sound wave of the bass part is radiated as follows. That is, a part of the sound of the two speaker units 21 and 22 is transmitted from a large number of through holes provided in the central portion of the front portion 23a of the box body 23 of the speaker box 20 which is the front surface of the flat panel display device 1. Radiated to the side. At the same time, the sound waves radiated into the speaker box 20 from the back surfaces of the two speaker units 21 and 22 pass through the two ducts 26 and 27 and the two openings 31 and 31 provided in the lower surface portion 23c of the speaker box 20. Radiated out of the box. The sound radiated from the opening 31 is radiated in phase with the sound wave from the front surface, so that the bass can be strengthened and a powerful bass can be generated.

A to C shown in FIG. 12 show another embodiment of the arrangement structure of the ducts 26 and 27. In FIG. 12A, two ducts 26 and 27 are arranged so as to be point-symmetric with respect to the speaker units 21 and 22. That is, the second box side connection portion 28a in the above embodiment is provided on the upper surface portion 23b of the box body 23, and the second duct 27 is connected to the box side connection portion 28a and is suspended. is there. By adopting such a configuration, the same effect as in the above embodiment can be obtained.

12B and 12C are configured such that two ducts 26 and 27 are disposed sideways so that sound waves are emitted from the left and right sides. That is, FIG. 12B is a diagram in which two ducts 26 and 27 are arranged symmetrically with respect to the speaker units 21 and 22, and the two ducts are opposed to each other on both sides of the two speaker units 21 and 22. 26 and 27 are arranged. FIG. 12C shows a point-symmetric arrangement, in which two ducts 26 and 27 are arranged on both sides of the two speaker units 21 and 22 while being displaced vertically. In these embodiments, since sound waves are radiated from the side, the support structure from the vertical direction is used instead of the support structure from the left and right directions by the support columns 14 and 15 of the above embodiment.

As described above, the present invention is not limited to the above-described embodiment. For example, in the above-described embodiment, the two ducts 26 and 27 are arranged in line symmetry or point symmetry around the two speaker units 21 and 22. However, the number of speaker units may be one, or three or more. Moreover, the said Example demonstrated the example applied to the flat panel display apparatus as a specific example of an electronic device . As described above, the present invention can be variously modified without departing from the scope of the invention.

It is the perspective view which looked at the flat panel display apparatus provided with the speaker apparatus of this invention from the front side. It is the perspective view which looked at the flat panel display apparatus provided with the speaker apparatus of this invention from the back side. It is a perspective view which shows the inner surface of the box main body of the speaker box which concerns on the flat panel display apparatus provided with the speaker apparatus of this invention. It is a perspective view before fitting a cover body to the box main body of the speaker box which concerns on the flat panel display apparatus provided with the speaker apparatus of this invention. It is a perspective view after fitting the cover body to the box main body of the speaker box which concerns on the flat panel display apparatus provided with the speaker apparatus of this invention. The speaker box according to a flat panel display device having the speaker device of the present invention shows in cross-section, FIG. 6 A before fitting the lid to the box body of the state, the lid in FIG. 6 B is the box body It is each sectional drawing of the state after fitting. It is explanatory drawing which expands and shows the principal part of FIG. 8A is an enlarged cross-sectional view of the main part of FIG. 6A, and FIG. 8B is an enlarged cross-sectional view of the main part of FIG. 6B. It shows the bass reflex ducts of the flat panel display device having the speaker device of the present invention, FIG 9 A is a front view, FIG. 9 B is a bottom view. The speaker box according to a flat panel display device having the speaker device of the present invention shows in cross-section, FIG. 10 A is a state before connecting the duct to the box body, FIG. 10 B is connected to the duct to the box body It is explanatory drawing of each of a back state. It is sectional drawing of the duct part of the speaker box which concerns on the flat panel display apparatus provided with the speaker apparatus of this invention. Shows another example of the arrangement of the duct according to the flat panel display device having the speaker device of the present invention, FIG 12 A is in point symmetry by extending the two ducts in the vertical direction about the speaker unit arrangement described example, FIG. 12 B is extended example in which axisymmetrically by extending the two ducts in the lateral direction around the speaker units, two duct mainly to FIG. 12 C speaker unit in the left-right direction It is explanatory drawing which shows each the example arrange | positioned by point symmetry.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Flat panel display apparatus, 2 ... Display main body, 4, 5 ... Speaker, 10 ... Stand, 14, 15 ... Support, 20 ... Speaker box, 21, 22 ... Speaker unit, 23 ... Box main body, 24 ... Cover, 26, 27 ... Duct , 26a, 27a ... Duct side connection, 28a, 28b ... Box side connection, 29 ... Duct support, 30a, 30b ... Boss, 31 ... Opening, 32 ... Taper, 33 ... Duct body , 34 .. Fixed piece, 35. Stopper portion, 36. Tapered receiving portion, 41. Positioning piece, 44 and 45. Seat hole, 50. Identification mark, 52. Tapered groove, 53.

Claims (4)

A flat panel display,
A speaker device disposed on the back side of the flat panel display, and a flat panel display device comprising:
The speaker device includes a speaker box to which a speaker unit is attached, ducts having one end connected to a plurality of openings provided in the speaker box and the same number of ducts as the plurality of openings housed in the speaker box. Have
The plurality of openings are arranged so as to be substantially line symmetric or substantially point symmetric on both sides around the speaker unit on a surface substantially orthogonal to the surface to which the speaker unit is attached,
Further, the plurality of openings are provided with a box-side connection portion protruding inside the speaker box, and one of the box-side connection portion and the duct-side connection portion of the duct has a tapered portion. Provided, the other connection portion is provided with a taper receiving portion fitted to the taper portion,
The plurality of ducts are arranged so as to be substantially line symmetric or point symmetric on both sides across the speaker unit, and the direction in which the plurality of ducts extend is a direction in which sound waves of the speaker unit are emitted. A flat panel display device provided with a speaker device, characterized in that the speaker device is extended in a direction substantially perpendicular to the vertical direction. The speaker box has a box body in which a back surface facing the back side of the flat panel display is opened and the speaker unit is attached to a front surface opposite to the back surface portion, and is attachable to and detachable from the back surface portion of the box body And a lid attached to the
The flat panel display device provided with the speaker device according to claim 1, wherein the opening is provided in at least two locations of an upper surface portion, a lower surface portion, a left side surface portion, and a right side surface portion of the box body. The plurality of ducts are each provided with a fixing piece for screwing to the boss of the speaker box, the fixing piece is provided with a slope portion inclined toward the box side connection portion, and the boss has the above-mentioned A slope receiving surface part inclined in the same direction corresponding to the slope part is provided,
Flat panel display with the speaker apparatus according to claim 1, characterized in that the said inclined surface portion when screwed is moved along the oblique receiving face the duct side connecting portion is pressed against the box side connecting portion apparatus. 4. The speaker according to claim 3 , wherein a pair of the fixed pieces is provided on both sides across the center line of the duct, and a pair of the bosses are provided at positions corresponding to the pair of fixed pieces of the speaker box. Flat panel display device with device.

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