JPH114394A - Television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reproduce a low frequency sound at a high sound pressure even from a small volume and small sized unit by mounting a sub-woofer to a ceiling of a cabinet and extending a port of the sub-woofer in the vicinity of a video display section so as to reduce the effect of an installation environment. SOLUTION: A CRT 2 is fixed to a cabinet 1, the cabinet 1 and the CRT 2 form a wall face to be acted as a buffle board. A sub-woofer 3 is mounted and placed on a cabinet ceiling. A port 3a is configured in the inside of the sub-woofer 3. emits a low frequency sound wave and extended in the vicinity of a front face of the cabinet 1 so that the wall face consisting of the cabinet 1 and the CRT 2 is utilized maximizingly as the buffle board. The sub-woofer 3 is divided into volumes 3c, 3d by a partition plate 3b and the port 3a is extended up to a front side of the cabinet 1, then the volume 3c is increased and the method is advantageous for reproducing a low frequency sound.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art As a configuration of a subwoofer for a television receiver, for example, Japanese Utility Model Laid-Open No. 3-74881 and Japanese Utility Model Laid-Open No. 5-68182 have been proposed. in this case,
This shows a television receiver built-in type in which a subwoofer is stored in a back cover. Further, as shown in FIGS. 9 and 10, there has been proposed a type mounted on the top of a television receiver.

[0003]

However, in the case of the above-mentioned built-in type, since the speaker is attached using the back cover, it is difficult to cope with various inch sizes, and the expandability is lacking. In addition, in the mounting type shown in FIGS. 9 and 10, the port 8a of a bass reflex or the like is exposed to the rear as viewed from the front of the television receiver as shown in the figures. Therefore, if there is no reflector such as a wall on the rear surface of the television receiver, the viewer cannot feel a low sound pressure. Further, in both the television receiver built-in type and the top surface mounted type, the size of the subwoofer is governed by the outer dimensions of the back cover, and it is difficult to form the subwoofer with a large volume. As a result, there has been a problem how to produce low sound pressure with a small volume and small diameter unit.

The present invention has been made to solve the above-mentioned conventional problems, and is intended to reduce the influence of the installation environment of a television receiver and to reproduce a low sound with a high sound pressure even in a small volume. is there.

[0005]

In order to solve the above-mentioned problems, a first television receiver of the present invention has a subwoofer mounted on a top surface of a cabinet, and a port end of the subwoofer is connected to an image display section. (CRT tube surface).

In a second television receiver of the present invention, a subwoofer is mounted on a top surface of a back cover, and a port end of the subwoofer extends downward along the rear surface of the back cover to a position halfway through the back cover. The configuration was as follows.

A third television receiver of the present invention has a configuration in which a subwoofer is arranged between the bottom of a cabinet and a set table, and a port end is provided near a video display unit.

In a fourth television receiver of the present invention, a subwoofer is mounted on a top surface of a cabinet, and a wall extends from a port end of the subwoofer to a vicinity of a video display unit (CRT tube surface) to provide a cabinet outer surface. Thus, the sound guide wall is formed.

In each of the above-mentioned configurations, the distance between the speaker unit and the port is separated by at least one-eighth of the required low-frequency reproduction frequency, thereby suppressing interference between the front wave of the speaker unit and the port output to enhance bass reproduction. The configuration was as follows.

With the above-described configuration, the television receiver of the present invention is less affected by the installation environment of the television receiver, and can reproduce low-pitched sound at a high sound pressure even with a small volume and small diameter unit.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A television receiver according to a first aspect of the present invention has a subwoofer mounted on a top surface of a cabinet, and a port end of the subwoofer is formed to extend to a vicinity of an image display unit. A television receiver characterized in that bass is enhanced by utilizing a front surface of a cabinet and a CRT surface as a baffle surface, which means that a bass sound is reduced by a baffle effect of the front surface of the cabinet and the CRT surface. It has the effect of reducing interference due to diffraction. In addition, the port output is directed toward the viewer of the television receiver, so that there is an effect of enabling the low sound range reproduction at a high sound pressure to the viewer without being largely influenced by the installation environment.

According to a second aspect of the present invention, in the television receiver, a subwoofer is mounted on a top surface of the back cover, and a port end of the sub woofer is directed downward along a rear surface of the back cover so as to be in the middle of the back cover. This is a television receiver characterized by being extended to the bottom, using the back cover surface to collectively output the output from the port and emit it to the lower side, enhancing the bass with the bass reflected from the floor .
Further, since the port is formed along the rear surface of the back cover, the port length can be increased to the height of the back cover, which is advantageous for a low-frequency reproduction design. It is most effective when installed in a room with a high ceiling where bass is diffused to the upper part.

According to a third aspect of the present invention, in the television receiver, a subwoofer is disposed between a bottom surface of the cabinet and the set table, and a port end is provided near the video display unit. In the John receiver, the bass is enhanced by using the front surface of the cabinet, the CRT surface, and the set base as a baffle surface to enhance the bass. In addition to the effect of further reducing the interference due to diffraction, the bass sound is further enhanced by the sound reflected from the floor because it is located on the bottom surface.

According to a fifth aspect of the present invention, a subwoofer is mounted on a top surface of a cabinet, and a side wall of a port end of the subwoofer extends to a vicinity of an image display unit, and a sound is formed between the subwoofer and an outer surface of the cabinet. This is a television receiver characterized by forming a guiding wall, wherein the side wall and the top surface of the cabinet function as a sound guiding wall, and sound can be efficiently guided to the front.

Embodiment 1 Hereinafter, a television receiver according to Embodiment 1 of the present invention will be described with reference to FIGS.

FIG. 1 is a front view of a television receiver according to Embodiment 1 of the present invention, and FIG. 2 is a side sectional view of FIG. 1 and 2, reference numeral 1 denotes a cabinet, 2 denotes a CRT, 3 denotes a subwoofer of the present invention, 4 denotes a speaker unit, and 5 denotes a back cover. The CRT 2 is fixed to the cabinet 1 and forms a wall surface with the cabinet 1 and the CRT 2. The function of the baffle plate is performed by the configuration of the present invention. The subwoofer 3 is mounted and installed on the top of the cabinet. The port 3a is provided inside the subwoofer 3 of the present invention and emits low-frequency sound waves. The wall formed by the cabinet 1 and the CRT 2 is used as a baffle plate to maximize its effect. It extends to the vicinity. Further, if the subwoofer 3 of the present invention is described as, for example, a Kelton type, the partition plate 3b
Thereby, it is divided into a first volume 3c and a second volume 3d.

By forming the port 3a so as to extend to the front of the cabinet 1, the first volume 3c can be increased, which is advantageous for bass reproduction. And, the external shape from the front view is not changed.

Although the embodiment has been described with reference to a Kelton type subwoofer, the present invention is also effective with a bass reflex type.

(Embodiment 2) Hereinafter, a television receiver according to Embodiment 2 of the present invention will be described with reference to FIGS.

FIG. 3 is a front view of a television receiver according to Embodiment 2 of the present invention, and FIG. 4 is a side sectional view of FIG. 3 and 4, reference numeral 6 denotes a subwoofer according to claim 2 of the present invention. The subwoofer 6 is installed on the top of the television receiver. The port 6a is formed inside the subwoofer 6 of the present invention and emits sound waves in a low frequency range. The sound reflected from the floor is utilized to the maximum extent, the diffusion of the bass is prevented by the back cover surface, and the low sound pressure is reduced. The lower cover 5 is formed along the rear surface of the back cover 5.

If the subwoofer 6 of the present invention is described as a bass reflex type, for example, the back wave of the speaker unit 4 is inverted in phase and output downward from the port. And the output direction of the port 6a can be reversed by 180 °, thereby reducing the low-frequency attenuation due to interference with the unit front wave as compared with a bass reflex that outputs in the same direction as a normal speaker unit. There is also. Further, the port length can be formed up to the height of the back cover, which is very advantageous for low-frequency reproduction.

(Embodiment 3) Hereinafter, a television receiver according to Embodiment 3 of the present invention will be described with reference to FIGS.

FIG. 5 is a front view of a television receiver according to Embodiment 3 of the present invention, and FIG. 6 is a side sectional view of FIG. 5 and 6, 1 is a cabinet and 2 is a CR.
T and 7 are subwoofers of the present invention, 4 is a speaker unit, 5 is a back cover, and 8 is a set base door.
The CRT 2 is fixed to the cabinet and forms a wall surface by the cabinet 1 and the CRT 2. The function of the baffle plate is performed in the configuration of the present invention. Further, the set base door 8 is closed to form a wall surface, which also has a baffle plate effect.

The subwoofer 7 is provided between the television receiver and the set stand. Also, subwoofer 7
Has an area on its top surface necessary to mount a television receiver. Although not shown in FIGS. 5 and 6, a positioning pin for the television receiver is provided to prevent displacement of the television receiver and facilitate installation.

The port 7a is formed inside the subwoofer 7 of the present invention, and emits low-frequency sound waves. In order to maximize the effect of the wall formed by the cabinet 1, the CRT 2 and the set base door 8 as a baffle plate,
The cabinet 1 and the set base door 7 are formed on the same plane. Further, the subwoofer 7 of the present invention is advantageously a Kelton type. The partition 7b divides the television receiver into a first volume 7c and a second volume 7d. Since the speaker unit 4 is fixed inside the subwoofer 7 of the present invention, the television receiver is placed above the unit open type. When installed, the set does not hinder bass reproduction. Furthermore, the adverse effect of the vibration of the unit on the television receiver is reduced.

(Embodiment 4) Hereinafter, a television receiver according to Embodiment 4 of the present invention will be described with reference to FIGS.

FIG. 7 is a front view of a television receiver according to Embodiment 4 of the present invention, and FIG. 8 is a side sectional view of FIG. 7 and 8, 1 is a cabinet and 2 is a CR.
T and 7 are subwoofers of the present invention, 4 is a speaker unit, 5 is a back cover, 9 is a side wall, and 10 is a cabinet top surface. In this configuration, the low sound emitted from the port 3a is guided by the side wall 9 and the cabinet top surface 10 and reaches the cabinet front surface. That is, the side wall 9 and the cabinet top surface 10 function as a sound guide wall, and can efficiently guide sound to the front. Further, when the display is guided to the vicinity of the video display unit, the bass sound can be reproduced more efficiently by the baffle plate effect of the cabinet 1 and the CRT 2. further,
In the present embodiment, by designing the side wall 9 smartly, the port 3a can be hidden from the viewer, and the commercial value can be further enhanced in appearance.

[0028]

As described above, according to the television receiver of the present invention, the influence of the installation environment of the television receiver is small, and even a small volume and small diameter unit can reproduce a low sound at a high sound pressure. Things.

[Brief description of the drawings]

FIG. 1 is a front view of a television receiver according to Embodiment 1 of the present invention.

FIG. 2 is a side sectional view of FIG. 1;

FIG. 3 is a front view of a television receiver according to Embodiment 2 of the present invention.

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a front view of a television receiver according to Embodiment 3 of the present invention.

FIG. 6 is a side sectional view of FIG. 5;

FIG. 7 is a front view of a television receiver according to a fourth embodiment of the present invention.

8 is a side sectional view of FIG. 7;

FIG. 9 is a front view of a conventional television receiver.

FIG. 10 is a side sectional view of a conventional television receiver.

[Explanation of symbols]

 Reference Signs List 1 cabinet 2 CRT 3, 6, 7, 9 subwoofer 3a port 3b partition plate 3c first volume 3d second volume 4 speaker unit 5 back cover 6a port 7a port 7b partition plate 7c first volume 7d second volume Capacity 8 Set door 9 Wall 10 Cabinet top

Claims (5)

[Claims] 1. A television receiver comprising: a subwoofer mounted on a top surface of a cabinet; and a port end of the subwoofer extending to a position near an image display unit. 2. A television receiver comprising: a subwoofer mounted on a top surface of a back cover; and a port end of the sub woofer extending downward along the rear surface of the back cover to a part of the back cover. . 3. A television receiver, wherein a subwoofer is arranged between a bottom surface of a cabinet and a set table, and a port end is provided near a video display unit. 4. The low-frequency sound reproduction is enhanced by increasing the distance between the speaker unit and the port by at least one-eighth wavelength of the required low-frequency reproduction frequency to suppress interference between the front wave of the speaker unit and the port output. The television receiver according to any one of claims 1 to 3. 5. A subwoofer is mounted on a top surface of a cabinet, and a side wall of a port end of the subwoofer extends to a vicinity of a video display unit, and a sound guide wall is formed with an outer surface of the cabinet. Television receiver.