JP3239485B2 - Loudspeaker device and television receiver using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker device used for video equipment such as a television receiver and a television receiver using the same.

[0002]

2. Description of the Related Art A method in which a horn or a sound tube is provided on the front of a speaker and a sound wave generated from the speaker is guided to an opening portion is capable of obtaining a larger output sound pressure than a case where a horn or a sound tube is not used. This has the advantage that sound is transmitted in a specific direction, and has been widely used.

Hereinafter, a speaker device using a conventional acoustic tube will be described with reference to the drawings. FIG. 3 is a plan sectional view of a television receiver equipped with a speaker device using the above-described conventional acoustic tube. In FIG.
Is a speaker, 2 is an acoustic tube on which the speaker 1 is mounted, 3 is a television cabinet, 4 is a cathode ray tube, 5 is an opening of the acoustic tube 2, 6 is a sound absorbing material, and 7 is a reflector.

[0004] The function of a television receiver having a built-in speaker device using the conventional acoustic tube 2 configured as described above will be described below. As shown in FIG. 3, a sound tube 2 to which a speaker 1 is attached is built in along a cathode ray tube 4 inside a television receiver, and a television cabinet 3 is structured so as to be along the sound tube 2. This enables the television receiver to be small and slim.

In the acoustic tube 2, sound waves radiated from the speaker 1 are more naturally transmitted through the opening 5 of the acoustic tube 2.
The sound absorbing material 6 and the reflecting plate 7, which are optimally installed in accordance with the length and the shape of the acoustic tube 2, are provided to improve the sound quality of the television receiver.

[0006]

However, in the above-described conventional configuration, since the acoustic tube 2 is disposed between the television cabinet 3 and the cathode ray tube 4, a further miniaturization of the television receiver is required. The cross-sectional area of the sound guide for guiding sound waves inside the acoustic tube 2 and the cross-sectional area of the opening 5 are reduced, so that more natural sound reproduction cannot be performed and the sound pressure level is significantly reduced. Had.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and provides a speaker device capable of further downsizing a television receiver and improving sound quality, and a television receiver using the same. It is intended for.

[0008]

SUMMARY OF THE INVENTION In order to solve this problem, a speaker device and a television receiver using the same according to the present invention have an elongated opening at the front of the speaker and are formed in a shape close to a substantially rectangular shape. An acoustic tube for guiding sound waves is placed, and the opening of the tip of the acoustic tube is joined to the outside wall of the cathode ray tube and the inside wall of the television cabinet, and the outside wall of the cathode ray tube from this joint to the opening of the television cabinet. A speaker is formed by forming a sound guide for guiding sound waves radiated from the acoustic tube to a front surface of a television receiver by utilizing a hollow portion between the television receiver and an inner wall side surface of the television cabinet.
And a fitting rib provided on the cabinet.
The end of the acoustic tube is joined to the end of the acoustic tube,
For the cross-sectional area, the outside wall of the cathode ray tube and the TV cabinet
It is configured using the cavity between the inner wall side surface of the unit and
The cross-sectional area of the sound conducting part is large.
You.

[0009]

With this configuration, the opening is formed in a slender rectangular shape in consideration of the incorporation into equipment, and further, in the speaker device in which the opening of the sound tube is made slim, the cathode ray tube and the television cabinet of the television receiver are used. The sound guide section of the sound tube is made effective by effectively utilizing the space of the sound tube, so that the cross-sectional area of the sound guide section of the sound tube can be increased, thereby further improving the sound quality and the television receiver. with a possible further small streamlining of, sound
Fit the opening of the tip of the sound tube and the fitting rib of the TV cabinet 9
Joining prevents sound waves from wrapping around and simultaneously
The TV cabinet can also increase the rigidity of the cabinet.
High sound quality as a receiver
It is. Also, with respect to the sectional area of the opening of the tip of the acoustic tube,
To increase the cross-sectional area of the sound guide.
The attenuation of the acoustic signal emitted from the speaker through the acoustic tube.
Even better sound quality is realized.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. Note that the same reference numerals as those in FIG. 3 indicate the same parts.

FIG. 1 is a plan sectional view of a television receiver equipped with a speaker device according to an embodiment of the present invention. In FIG. 1, 1 is a speaker, 8 is an acoustic tube on which the speaker 1 is mounted, 9 is a television cabinet, 4 is a cathode ray tube, 10 is an opening at the tip of the acoustic tube, and 11 is a cathode ray tube 4
A sound guide formed by utilizing a space between the sound guide and the television cabinet 9, an opening 12 of the television receiver formed by the sound guide 11, and a tip end opening 10 of the sound tube 13. A fitting rib 14 for joining the distal end of the acoustic tube 8 to the television cabinet 9 is provided at the distal end opening 1 of the acoustic tube.
No. 0 is a cushion material provided at a joint between the front end of the acoustic tube 8 and the cathode ray tube 4.

FIG. 2 is a perspective view showing an enlarged and partially sectioned structure of the speaker device according to the embodiment of the present invention shown in FIG. In FIG. 2, 15 is a sound absorbing material, 16 is
Is a reflector.

The acoustic tube 8 of the present invention constructed as described above.
In the case of a speaker device using a television receiver, even in a speaker device in which the opening 12 of the television receiver is made slimmer,
By effectively utilizing the space between the cathode ray tube 4 and the television cabinet 9 of the television receiver and forming the sound guide section 11 for guiding sound waves radiated from the distal opening 10 of the acoustic tube 8, the television Opening 12 of John receiver
Can set a large cross-sectional area that affects the ease with which sound waves can pass through the sound guide section 11, so that the sound quality of the speaker device and the size of the television receiver can be further reduced.

Further, in the embodiment of the present invention, the sound absorbing member 15 and the reflecting plate 16 provided inside the acoustic tube 8 are combined with the length of the sound conducting portion 11 composed of the television cabinet 9 and the cathode ray tube 4. It is installed in consideration of the internal structure of the acoustic tube 8, and a cushioning material 14 is provided at a joint between the opening 10 at the distal end of the acoustic tube and the side surface of the outer wall of the cathode ray tube 4 to prevent sound waves from entering and Sound tube tip opening 10
And the inner wall side surface of the TV cabinet 9 are joined through the fitting ribs 13 to prevent sound waves from entering and at the same time increase the rigidity of the TV cabinet 9, thereby enabling high sound quality. Can be.

Further, in the case of the embodiment of the present invention, the cross-sectional area of the sound guide section 11 composed of the cathode ray tube 4 and the television cabinet 9 is made larger than the cross-sectional area of the opening section 10 at the tip of the acoustic tube. The sound signal emitted from the speaker 1 via the sound tube 8 is suppressed from being attenuated to achieve high sound quality.

In the case of the speaker device of the present invention and the configuration of a television receiver using the same, a further reduction in size and slimness and higher sound quality of the television receiver, which could not be realized conventionally, is achieved by the sound guide section 11. Has become possible because the cross-sectional area can be more effectively increased.

[0017]

As described above, according to the present invention, an acoustic tube for guiding sound waves having an elongated shape and a substantially rectangular shape is arranged on the front surface of a speaker, and the opening at the tip of the acoustic tube is connected to a cathode ray. The outer wall of the tube is joined to the inner wall of the television cabinet, and the sound from the joint between the outer wall of the cathode ray tube and the inner wall of the TV cabinet from the junction to the opening of the television cabinet is utilized. By forming the sound wave radiated from the tube as a sound guide for guiding the sound wave to the front of the television receiver, it is possible to further reduce the size and slimness of the television receiver, achieve higher sound quality, and reproduce sound with high sound pressure.

[Brief description of the drawings]

FIG. 1 is a plan cross-sectional view of a television receiver equipped with a speaker device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an enlarged and partially sectioned structure of the speaker device according to the embodiment of the present invention shown in FIG. 1;

FIG. 3 is a plan sectional view of a television receiver equipped with a conventional speaker device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Speaker 4 Cathode ray tube 8 Acoustic tube 9 Television cabinet 10 Tip opening of acoustic tube 11 Sound guide part constituted by cathode ray tube and television cabinet 12 Opening of television receiver 13 Fitting rib 14 Cushion material 15 Sound absorbing material 16 Reflector

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Masahiko Okada 1006 Kadoma Kadoma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. In-house (56) References JP-A-3-82994 (JP, U) JP-A-2-145891 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) H04R 1/02 102 H04N 5/64 541 H04R 1/34 310

Claims (1)

(57) [Claims] 1. An acoustic tube for guiding sound waves having an elongated and substantially rectangular shape is disposed in front of a speaker, and a front end opening of the acoustic tube is formed between an outer wall between cathode wires and a side of a television cabinet. The sound tube radiated from the acoustic tube is transmitted to the TV by utilizing a cavity between the outer wall side between the cathode wires from the junction and the opening of the TV cabinet and the inner wall side of the TV cabinet. A speaker device with a sound guide that leads to the front of the John receiver
The fitting rib provided on the cabinet and the sound
By joining the tip of the tube, the cross-sectional area of the
On the other hand, the outside of the cathode ray tube and the inside of the TV cabinet
Disruption of the sound guide constructed using the cavity between the side of the wall
A speaker device configured to have a large area .