JP2001145186A - Television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a loudspeaker device incorporated in a television receiver to reproduce low-pitched sounds with a high sound pressure, even although the device has small volume and a small aperture without being affected by its installed environment. SOLUTION: A television receiver is composed of a loudspeaker device constituted by arranging sound introducing pipes 1a on the front face sides of loudspeakers 1c and further arranging woofer boxes 1 on the rear face sides of the loudspeakers 1c and downwardly extending the ports 1b of the woofer boxes 1, a cabinet 2 housing the loudspeaker device CRT 4, control circuit board 5, and back cover 3. The television receiver has sound emitting holes 9 corresponding to the sound emitting holes 1a on the front face side of the cabinet 2 and openings 2a, corresponding to the ports 1b on the bottom face side of the cabinet 2 and intensifies low-pitched sounds by emitting low-pitched sounds from the bottom face of the cabinet 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker device housed in a television receiver.

[0002]

2. Description of the Related Art Recently, as a television receiver equipped with a subwoofer speaker, a built-in type in which a speaker device is housed in a cabinet, or a television receiver mounted on a top surface of the television receiver as shown in FIG. -A configuration equipped with a car device has been proposed.

[0003]

In the configuration shown in FIG. 5, the port 59a of a bass reflex or the like faces rearward when viewed from the front of the television receiver. When the television receiver is installed in a place where there is no wall at the rear, a viewer cannot feel a feeling of low sound pressure. The size of the speaker device is governed by the internal space of the cabinet that constitutes the television receiver and the shape of the back cover. The issue was how to achieve low sound pressure with a small volume and small diameter. The present invention is not affected by the installation environment of a television receiver, and enables a speaker device to reproduce a low sound at a high sound pressure even with a small volume.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a port portion of a speaker device built in a cabinet is formed downward, and a low-pitched sound is emitted from the bottom of the cabinet. It was configured to exert pressure. Also, the vibration of the speaker is suppressed by integrally connecting the woofer boxes of a pair of speaker devices built in the cabinet.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first aspect of the present invention is to dispose a sound conduit on the front side of a speaker, dispose a woofer box on the rear side of the speaker, and set the port of the woofer box downward. Extended speaker device and CRT
And a cabinet for accommodating the control circuit board and the speaker device. The cabinet has a sound emission hole corresponding to the sound conduit on the front side and an opening corresponding to the port on the bottom side. A television receiver characterized by enhancing the bass by emitting sound from the bottom of the cabinet, and by increasing the bass efficiency by limiting the radiation space, a small volume and a small caliber unit are sufficient. Bass is obtained.

Further, a second invention provides a pair of speaker devices in which a sound conduit is arranged on the front side of the speaker and a woofer box is arranged in a symmetrical system on the rear side of the speaker, respectively.
It comprises a cabinet for storing an RT, a control circuit board, and the pair of speaker devices, and suppresses vibration of the speaker by integrally connecting the pair of woofer boxes. When the left and right speakers are driven in the same phase, the vibrations transmitted through the box are paired on the left and right sides, and the vibrations are canceled out by canceling each other.

Hereinafter, a television receiver according to an embodiment of the present invention will be described with reference to the drawings.

(Embodiment 1) FIG. 1 is a front view of a television receiver according to Embodiment 1 of the present invention, and FIG.
Is a cross-sectional view of a main part taken along a cutting line SS, and FIG. 3 is a perspective view of the main part when FIG. 1 is viewed from a bottom surface direction. 1 to 3, reference numeral 1 denotes a woofer box, 1a denotes a horn, 1b denotes a port extending downward from the woofer box, 1c denotes, for example, a bass reflex type speaker, 2 denotes a cabinet, 2a
Is an opening, 2b is a depression, 3 is a back cover, 4 is a CRT,
5 is a control circuit board, 6 is a set stand, 9 is a sound emission hole, 100
Indicates a television receiver.

The cabinet 2 and the back cover 3 are integrated by screwing. The sound output hole 9 is formed by drilling several hundred to several thousand through holes having a diameter of about 0.5 mm to 2 mm at both ends of the front surface of the cabinet 2. Further, the control circuit board 5 naturally controls a video signal as desired and projects an image.

The television receiver 100 has a horn 1a on the front side of a speaker 1c, a woofer box 1 on a rear side of the speaker 1c, and a port 1b of the woofer box 1 extending downward. The speaker device, the CRT 4, the control circuit board 5, and the speaker
Cabinet 2 and back cover 3 for storing devices
The cabinet 2 has a sound output hole 9 corresponding to the horn 1a on the front side and the port 1b on the bottom side.
And an opening 2a corresponding to the above-mentioned structure is provided, and sound is emitted from the bottom surface of the cabinet 2 to enhance bass.

The port output is emitted toward the bottom of the cabinet, collides with the set table 6, and is radiated to the front of the cabinet. The space from which the bass is radiated is limited to the space between the cabinet 2 and the set table 6, and the vibration energy is transmitted to the viewer as a spherical wave without being diffused. As a result, a sufficient bass sound can be obtained even with a small volume and a small caliber unit by the increased efficiency of the bass sound by limiting the radiation space.

[0012] This effect is not limited to the set stand, but may be the case where the television receiver is placed on the floor.
Furthermore, in the embodiment, the example using the bass reflex type sub woofer has been described, but a Kelton type may be used. Further, as shown in FIG. 3, by providing a recess 2b around the opening 2a provided on the bottom surface of the cabinet 2, the opening 2a is provided.
Also works as a handle.

(Embodiment 2) FIG. 4 is a cross-sectional view of a main part of a television receiver according to an embodiment of the present invention as viewed from above. In FIG. 4, reference numeral 7 denotes a woofer box, 7a denotes a horn, 7b denotes a closed box, 7c denotes a speaker,
7d indicates a connecting portion, 7e indicates a left channel vibration direction, and 7f indicates a right channel vibration direction.

The television receiver 200 has a pair of speakers in which a sound pipe (horn 7b) is arranged on the front side of the speaker 7c and a woofer box 7 is arranged on the rear side of the speaker 7c in a symmetrical system. It comprises a car device, a CRT 4, a control circuit board (not shown), a cabinet 42 for accommodating the pair of speaker devices, and a back cover 43. The pair of woofer boxes 7 are integrally connected. By doing so, the vibration of the speaker 7c is suppressed.

That is, when the vibration direction 7e of the left channel and the vibration direction 7f of the right channel are operated in the same phase, the directions of the vibrations are opposite to each other, so that the closed boxes connected in pairs cancel each other out. The vibration of the box can be reduced.

[0016]

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 bass can be reproduced at a high sound pressure even with a small volume and small diameter unit. Further, vibration of the closed box can be suppressed.

[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 cross-sectional view of FIG. 1 taken along a cutting line SS.

FIG. 3 is a perspective view of a main part of FIG. 1 as viewed from the bottom.

FIG. 4 is a sectional view of a television receiver according to Embodiment 2 of the present invention.

FIG. 5 is a sectional view of a main part of a conventional television receiver.

[Explanation of symbols]

 1, 7 Woofer box 1a Horn 1b, 7a Port 1c Speaker 2, 42 Cabinet 2a Opening 2b recess 3, 43 Back cover 4 CRT 5 Control circuit board 6 Set stand 7b Sealed box 7c Speaker unit 7d Connection 7e Left channel vibration 7f Right channel vibration 9 Sound emission hole 100,200 Television receiver

Claims (2)

[Claims] 1. A speaker device in which a sound conduit is disposed on the front side of a speaker, a woofer box is disposed on the rear side of the speaker, and a port of the woofer box extends downward. And a cabinet for accommodating the control circuit board and the speaker device. The cabinet has a sound emission hole corresponding to the sound conduit on the front side and an opening corresponding to the port on the bottom side. A television receiver, which emits sound from the bottom of the cabinet to enhance bass. 2. A pair of speaker devices in which a sound conduit is arranged on the front side of the speaker and a woofer box is arranged in a symmetrical system on the rear side of the speaker, a CRT and a control circuit board, and A television receiver, comprising: a cabinet accommodating a pair of speaker devices; wherein the vibration of the speaker is suppressed by integrally connecting the pair of woofer boxes.