JP6006130B2 - Display device and television receiver - Google Patents

Description

  The present invention relates to a display device and a television receiver in which a speaker is attached inside a housing.

  In recent years, with the thinning of liquid crystal display devices, television receivers equipped with liquid crystal display devices have been made thin. A speaker is attached inside the housing of the television receiver. As the television receiver (housing) becomes thinner, the speaker mounting space is limited, and the speaker mounting structure is being limited.

  The speaker is screwed to the housing, and when it is fixed with a small number of screws, it may not be fixed in a certain position. The speaker may be attached to the housing via a rubber bush so that the vibration of the speaker is not directly conducted to the housing. However, when the rubber bush is deformed by the weight of the speaker, the speaker is displaced, and the speaker comes into contact with the housing, the vibration of the speaker is directly conducted to the housing, and so-called chatter noise is generated. Even when the speaker does not come into contact with the housing, a part of the sound generated by the speaker may leak into the housing and cause a reduction in sound quality.

As a method for suppressing chatter noise, for example, a buffer material is affixed to a location where the speaker may come into contact with the inner surface of the housing, and when the speaker contacts the housing, the cushion material is contacted via the cushioning material. There is. However, even when a cushioning material is used, when the speaker comes into contact with the housing, the entire housing together with the speaker may be a vibration source, and chatter noise may be generated. It ’s difficult.
In addition, there is a method to increase the number of screw fixing points of the speaker so that the speaker does not come into contact with the housing. However, along with the thinning of the housing, the front cabinet that composes the housing is also becoming narrower. It is difficult to increase the number of stops. Further, for the purpose of cost reduction, it is also required to reduce the number of screws used, and a method for increasing the number of screw fastening points is not realistic.

  As a method for attaching a speaker without using a screw, Patent Document 1 proposes a structure for attaching a speaker to a door panel of a vehicle such as an automobile. In the structure disclosed in Patent Document 1, a speaker is hooked and fixed in a mounting hole provided in a door panel of a vehicle.

JP 2008-85664 A

  In the structure disclosed in Patent Document 1, a speaker can be easily attached to a door panel of a vehicle. However, in the structure disclosed in Patent Document 1, it is not considered to suppress chatter noise caused by propagation of speaker vibration. Therefore, there is a demand for a structure in which a speaker can be securely mounted in a narrow space inside a housing by a simple mounting operation in a television receiver in which the mounting space of the speaker is limited.

  The present invention has been made in view of such circumstances. An object of the present invention is to provide a display device and a television receiver capable of fixing a speaker at a predetermined position with a minimum screwing position.

The display device according to the present invention is a display device in which a speaker is attached to the inside of a housing having a display panel on one side. The speaker has a sound generating unit that generates sound, and one end attached to the sound generating unit. A sound guide tube that guides the sound generated by the sound generation portion in the axial direction, and two fixing members that protrude outward from the outer surface of the sound guide tube in the opposite direction, and fix the speaker to the housing. Each of the two fixing members includes a base portion connected to the outer surface of the sound guide tube, a fixing portion provided on the one end side of the sound guide tube from the base portion, and fixed to the housing; have a fixed portion and a connecting portion connecting the base portion, wherein the inside of the sound guide tube, wire connected at one end to the sound generator is Yes arranged, the sound guide tube, the other of said conductor A through hole for guiding an end to the outside of the sound guide tube; The sound guide direction by the cylinder and said Rukoto Oh provided so as to guide the wire in the opposite direction.

  The display device according to the present invention is characterized in that the fixed portion is provided at a position closer to a plane that is perpendicular to the axial direction of the sound guide tube and includes the center of gravity of the sound generating portion, than the base portion.

  The display device according to the present invention is characterized in that the fixing portion is fixed to the housing via a buffer member.

  A television receiver according to the present invention includes any one of the display devices described above and a receiving unit that receives a television broadcast, and an image is displayed on the display device based on the television broadcast received by the receiving unit. Is displayed.

  According to the present invention, the speaker can be firmly fixed in the housing even if there are few screwing points. Therefore, it is possible to prevent the speaker from being lowered by its own weight and coming into contact with the housing, so that it is possible to suppress the occurrence of chatter noise caused by the speaker coming into contact with the housing. In addition, when the speaker is lowered by its own weight, part of the sound emitted from the speaker may leak into the housing and the sound quality may deteriorate. However, since the speaker can be firmly fixed, such a decrease in sound quality Can be suppressed.

It is a perspective view of the television receiver of this embodiment. It is a perspective view which shows the front cabinet and speaker in the television receiver of this embodiment schematically. It is a perspective view of a speaker. It is a top view of a speaker. It is a perspective view of a front cabinet. It is an enlarged view which shows a part of front cabinet with which the speaker was attached. It is a top view which shows a part of front cabinet with which the speaker was attached.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments thereof.
FIG. 1 is a perspective view of the television receiver of the present embodiment, and FIG. 2 is a perspective view schematically showing a front cabinet and a speaker in the television receiver of the present embodiment. The television receiver 100 of the present embodiment has a rectangular display panel 103 such as a liquid crystal panel, a plasma panel, or an organic EL (Electro Luminescence) panel. It is provided to make a part. A tuner (reception unit) 104 that receives a broadcast signal of a television broadcast is provided at an appropriate location inside the housing 101, and the television receiver 100 displays based on the broadcast signal received by the tuner 104. An image is displayed on the panel 103. The television receiver 100 illustrated in FIG. 1 has a configuration in which the display panel 103 is supported by the stand 105 in a standing state. However, the display device and the television receiver according to the present invention are not limited to such a configuration. For example, it may be configured to be attachable to a wall or the like without the stand 105.

  The housing 101 includes a frame-shaped front cabinet 101 a that surrounds the periphery of the display panel 103 from the front side (display screen side), and a deep dish-shaped back cabinet 101 b that covers the back side of the display panel 103. Inside the housing 101, on the back side of the display panel 103, a light source, a diffusion plate that uniformly diffuses light from the light source, an optical sheet that collects light from the light source diffused by the diffusion plate, etc. on the display panel 103, etc. Is stored.

  The front cabinet 101a and the back cabinet 101b have rectangular shapes with substantially the same vertical and horizontal dimensions. The front cabinet 101a and the back cabinet 101b are overlapped so that the vertical side and the horizontal side are aligned, and are assembled by fixing a plurality of peripheral portions with set screws. The front cabinet 101a and the back cabinet 101b may be made of synthetic resin or light metal such as aluminum.

  Two speakers 1 are attached to the inner lower portion of the housing 101, and the television receiver 100 outputs sound from the speakers 1 based on the broadcast signal received by the tuner 104. As shown in FIG. 2, each speaker 1 is configured in an elongated rectangular parallelepiped shape, and is attached to the left side and the right side of the lower side portion of the front cabinet 101a along the lower side portion. In the front cabinet 101a, sound emitting holes 30 (see FIG. 5) for emitting sound from the speakers 1 are formed at two locations where the speakers 1 are arranged, respectively. The front surface is covered with a rectangular plate-like mesh sheet 102 (see FIGS. 1 and 2). In consideration of the design of the front cabinet 101a, the mesh sheet 102 may be attached so as to cover a region from one end to the other end of the lower side portion of the front cabinet 101a.

FIG. 3 is a perspective view of the speaker 1, and FIG. 4 is a top view of the speaker 1. 3A shows a state viewed from the side attached to the front cabinet 101a, FIG. 3B shows a state viewed from the opposite side, that is, the side facing the back cabinet 101b, and FIG. 4 shows FIG. 3B. The state which looked at the speaker 1 to show from the top is each shown. Note that the two speakers 1 provided in the television receiver 100 are the same speaker, and are attached to the housing 101 in the same manner.
The speaker 1 includes a rectangular cylindrical sound guide tube 10 and a magnet unit 11 (sound generation unit) attached to one opening of the sound guide tube 10. The magnet unit 11 includes a cone 11 b as a diaphragm and a magnet 11 a that drives the cone 11 b, and the cone 11 b is disposed facing the one opening of the sound guide tube 10. A cushion member 12 is attached to the periphery of the other opening of the sound guide tube 10.

  The speaker 1 is attached to the front cabinet 101a with the cushion member 12 provided in the opening of the sound guide tube 10 being brought into close contact with the periphery of the sound emission hole 30 by the procedure described later. The sound generated by the cone 11 b is guided to the sound guide tube 10, reaches the sound emission hole 30, and is emitted through the sound emission hole 30.

  Fixing members 13 are provided on both end faces of the sound guide tube 10 in the longitudinal direction. Each of the fixing members 13 extends from the end face of the sound guide tube 10 to the magnet portion 11 side, and is bent at a substantially right angle so as to extend outward (outward in the longitudinal direction of the sound guide tube 10). 13a and a fixing portion 13b provided at the tip of each connecting portion 13a. Each of the fixing portions 13b has a through-hole penetrating in a direction orthogonal to the longitudinal direction of the sound guide tube 10 (a direction from the near side to the far side in FIG. 3). As shown in FIG. 4, the fixing portion 13b is provided closer to the magnet portion 11 than the base portion of the connecting portion 13a. More specifically, the fixed portion 13b is a plane orthogonal to the sound guide direction by the sound guide tube 10 (the axial direction of the sound guide tube 10) and in the vicinity of the plane including the center of gravity of the magnet portion 11 (magnet 11a). It is provided to be located.

  The sound guide tube 10 and the two fixing members 13 (the connecting portion 13a and the fixing portion 13b) are integrally formed. A cylindrical rubber bush (elastic member) 2 is fitted in each through hole of the fixing portion 13b. 3 and 4 show a state where the rubber bush 2 is fitted to the fixed portion 13b. The rubber bushes 2 extend in the front-rear direction from the through holes of the respective fixed portions 13b, and the end portions of the extended rubber bushes 2 have a hook shape. Therefore, the part which became hook shape has covered the peripheral part of the through-hole of each fixing | fixed part 13b.

  One end of a cable (conductor) 14a drawn into the inside (inside) of the sound guide tube 10 is connected to the magnet portion 11 through a cable holding portion (through hole) 14 provided at an appropriate location of the sound guide tube 10. ing. The cable holding part 14 has a through hole provided in the same direction as the through hole of the fixing part 13b. The other end of the cable 14a drawn to the outside (outside) of the sound guide tube 10 through the cable holding portion 14 is drawn to the magnet 11a side (back cabinet 101b side) as shown in FIGS. It is connected to the amplifier inside the body 101. Thus, by pulling out the cable 14a to the back cabinet 101b side, the arrangement of the cable 14a to the amplifier is simplified compared to the configuration in which the cable 14a is pulled out in the lateral direction (longitudinal direction of the sound guide tube 10).

FIG. 5 is a perspective view of the front cabinet 101a and shows a state viewed from the back side (back cabinet 101b side). Each of the sound emission holes 30 provided in the front cabinet 101a is composed of a plurality of small holes, and the plurality of small holes are arranged in two rows in the longitudinal direction on the lower side portion of the front cabinet 101a. As described above, the sound emitting holes 30 are configured in a lattice shape to prevent the strength of the front cabinet 101a from being lowered.
In addition, cylindrical bosses 31 having screw holes are provided on both sides of each sound emitting hole 30 on the back side of the lower side portion of the front cabinet 101a. A rib 31a extending radially outward is provided at the base of the boss 31, and the outer diameter on the base side including the rib 31a is formed larger than the outer diameter on the protruding end side.

  6 is an enlarged view showing a part of the front cabinet 101a to which the speaker 1 is attached, and FIG. 7 is a top view showing a part of the front cabinet 101a to which the speaker 1 is attached. 6 and 7 show a state in which one speaker 1 is attached to the front cabinet 101a, but actually two speakers 1 are attached to the front cabinet 101a. Moreover, the up-down direction in FIG. 6 corresponds to the up-down direction of the television receiver 100 in FIG.

  The speaker 1 is attached by first aligning the sound guide tube 10 of one speaker 1 toward one sound emitting hole 30 on the lower side of the front cabinet 101a and fitting it into the fixing portions 13b at both ends of the fixing member 13. The bosses 31 on both sides of the aligned sound emitting holes 30 are fitted into the through holes of the rubber bush 2 thus temporarily fixed. Since the inner diameter of the rubber bush 2 is the same as or slightly smaller than the outer diameter of the protruding end side of the boss 31, the rubber bush 2 is fitted into the boss 31 (press-fit). In the temporarily fixed state, the speaker 1 is restrained so as not to move in the vertical direction and the horizontal direction (direction parallel to the display screen of the display panel 103) with the two bosses 31 as a support. The fitting of the rubber bush 2 stops at a position where one end thereof (the side facing the front cabinet 101a) abuts on the rib 31a of the boss 31. At this time, as shown in FIG. 7, the cushion member 12 of the speaker 1 abuts against the front cabinet 101 a, and as shown in FIG. 6, the tip (protruding end surface) of the boss 31 is the other end of the rubber bush 2. It is exposed on the same surface as the (back side). The other speaker 1 is temporarily fixed to the bosses 31 on both sides of the other sound emitting hole 30 by the same method.

  Next, as shown by a two-dot chain line in FIG. 7, the back cabinet 101b is overlapped on the back side of the front cabinet 101a. The back cabinet 101b is provided with a through hole (screw through hole) 101c at a position facing the fixing portion 13b (rubber bush 2) when the back cabinet 101b is overlapped with the front cabinet 101a. The stacked back cabinet 101b is fixed to the front cabinet 101a by tightening the screw 3 passed through the through hole 101c into the screw hole of the boss 31. The back cabinet 101b fixed in this manner is in close contact with the other end (back side) of the rubber bush 2, and the rubber bush 2 is sandwiched between the rib 31a of the boss 31 and the back cabinet 101b. . In such a state, the speaker 1 is restrained so that it cannot move in the front-rear direction (direction approaching the front cabinet 101a or the back cabinet 101b).

  Since the speaker 1 is provided with the magnet 11a having a larger weight than the other members on the back side, the force that falls to the back side acts on the speaker 1 attached to the housing 101 as described above. . However, in the present embodiment, the speaker 1 is supported by the boss 31 press-fitted into the rubber bush 2 so as not to move in the vertical direction and the horizontal direction, and is sandwiched between the rib 31a and the back cabinet 101b and cannot move in the front-rear direction. It becomes. In particular, in the present embodiment, the fixing portion 13b is provided at a position closer to the plane including the center of gravity of the magnet portion 11 (magnet 11a) than the sound guiding tube 10 and perpendicular to the sound guiding direction by the sound guiding tube 10. Therefore, the speaker 1 is less likely to fall down on the back side.

  Therefore, the speaker 1 can maintain the mounting state firmly with the minimum screwing without causing a fall to the back side due to the weight of the magnet 11a. Therefore, it is possible to effectively prevent chatter noise that occurs when the speaker 1 that has fallen to the back side contacts the back cabinet 101b. In addition, since the cushion member 12 and the front cabinet 101a are kept in close contact with each other, the sound generated by the speaker 1 is released through the sound emission hole 30 without leaking, so that deterioration in sound quality can be prevented. Further, a rubber bush 2 (buffer member) is interposed at the contact portion between the speaker 1 and the housing 101, so that vibration of the speaker 1 is not directly transmitted to the housing 101, and chatter noise is not generated.

  The speaker 1 can be easily attached by the procedure described above. The screw 3 does not need to support the weight of the speaker 1, and a small diameter is sufficient. In addition, since the speaker 1 does not fall to the back side, an operation for interposing a cushioning material between the inner surface of the housing 101 and the speaker 1 and an operation for preventing the speaker 1 from being inclined to the back side by its own weight. Is no longer necessary. Therefore, it is possible to reduce the time and effort of the speaker 1 attachment process, and to improve the efficiency of the speaker 1 attachment work.

  In the above-described embodiment, in the sound guide tube 10, the cushion member 12 is attached to the periphery of the opening on the side in contact with the front cabinet 101a. In addition to this configuration, for example, in the sound guide tube 10, a cushion member 12 capable of passing sound such as a sponge over the entire surface of the opening so as to close the opening on the side in contact with the front cabinet 101 a. It may be affixed.

  In the above-described embodiment, the display device and the television receiver according to the present invention have been described based on an example in which the display device and the television receiver are applied to the television receiver 100. However, the display device according to the present invention is, for example, an image acquired from the outside. The present invention can be applied to a display device that displays video based on data.

  It should be thought that embodiment disclosed this time is an illustration and restrictive at no points. The scope of the present invention is defined not by the above-mentioned meaning but by the scope of the claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Speaker 2 Rubber bush 10 Sound guide cylinder 11 Magnet part (sound-production part)
DESCRIPTION OF SYMBOLS 13 Fixing member 13a Connection part 13b Fixing part 14 Cable holding part 14a Cable 31 Boss 100 Television receiver (display apparatus)
101 Housing 103 Display panel 104 Tuner (receiver)

Claims (4)

In a display device in which a speaker is attached inside a housing having a display panel on one side,
The speaker is
A sound generator that generates sound;
A sound guide tube having one end attached to the sound generation unit and guiding the sound generated by the sound generation unit in the axial direction;
Two fixing members that protrude outward from the outer surface of the sound guide tube in opposite directions, and fix the speaker to the housing;
The two fixing members are respectively
A base continuous with the outer surface of the sound guide tube;
A fixing portion provided on the one end side of the sound guide tube from the base portion and fixed to the housing;
Possess a connecting portion connecting the fixing portion and the base portion,
Inside the sound guide tube, a conductive wire having one end connected to the sound generating portion is disposed,
The sound guide tube has a through hole that guides the other end of the conductor to the outside of the sound guide tube,
The through holes, a display device according to claim Rukoto Oh provided so as to guide the wire in the opposite direction to the sound guide direction by said sound guide tube.   2. The display device according to claim 1, wherein the fixing portion is provided at a position closer to a plane including the center of gravity of the sounding portion than the base portion and perpendicular to the axial direction of the sound guide tube. The fixing unit, a display device according to claim 1 or 2, characterized in that via the cushioning member are to be fixed to the housing. A display device according to any one of claims 1 to 3 ,
A receiver for receiving television broadcasts,
A television receiver, wherein an image is displayed on the display device based on a television broadcast received by the receiving unit.

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