JPH06217387A - Speaker for television receiver - Google Patents

Abstract

PURPOSE:To make the speaker suitable for a speaker of a full range by outputting an intermediate and a high frequency component of a sound outputted from the speaker unit from a front load horn and outputting a low frequency sound from a back load horn an providing a throughhole on a side surface of the front load horn so as not to confine a reproduced sound within the horn. CONSTITUTION:A full range speaker unit 7 is mounted in front of a speaker box 3 and a sound outputted from the front of the unit 7 is picked up by a front load horn 4 and a sound outputted from the rear is picked up by a back load horn 5. Thus, the sound having a comparatively high frequency such as the sound of intermediate and high frequency is outputted via the horn 4 externally an a low frequency sound is outputted via the horn 5 externally. Furthermore, plural throughholes 4b with a small diameter are provided for the side surface of the horn 4 toward the unit 7 so as not to confine the sound of intermediate and high frequencies outputted externally via the horn 4 within the horn 4. Thus, the sound from the low to high frequencies is reproduced with superior sound quality.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, a television receiver is generally one in which a speaker is integrally incorporated. For example, when watching a television broadcast on the television receiver, a sound is reproduced from the built-in speaker for viewing. It is common to do. In this case, since a relatively small speaker unit is built in the television receiver, the sound is generally reproduced with a certain sound quality.

On the other hand, in recent years, when viewing a video program reproduced from a television broadcast or a video tape, it is required to reproduce a sound of high sound quality, and a television receiver has a relatively large size. Speakers are being installed.

[0004]

However, if a large-sized speaker is simply attached to the television receiver, the television receiver becomes large accordingly, and a large area is required as an installation space for the television receiver. . Therefore, it has been desired to develop a small-sized high-performance speaker capable of reproducing high-quality sound as a speaker for a television receiver.

In view of the above point, the present invention has an object to provide a high-performance speaker for a television receiver capable of reproducing high quality sound.

[0006]

The present invention is, for example, as shown in FIG. 1, a housing 1 which constitutes a television receiver main body.
In the speaker for the television receiver built in,
A speaker unit arranged in the housing 1, a front load horn 4 for transmitting the sound output from the front surface of the speaker unit to the outside of the housing 1, and a sound output from the rear of the speaker unit in the housing 1. It has a back load horn 5 to be transmitted to the outside, and a through hole 4b is provided on the side surface of the front load horn 4.

Further, in this case, the front load horn 4
And the length of the back load horn 5 are changed to change the phase of the sound output from the front of the speaker unit and the phase of the sound output from the rear of the speaker unit.

[0008]

According to the present invention, the mid-high range of the sound output from the speaker unit is satisfactorily output via the front load horn, and the low range sound is satisfactorily output from the back load horn. In this case, since there is a through hole on the side surface of the front load horn, the reproduced sound does not stay inside the horn.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a partially cutaway view showing a state in which the television receiver speaker of the present embodiment is built in the television receiver. In FIG. 1, reference numeral 1 is a casing constituting the main body of the television receiver. The cathode ray tube 2 for displaying an image is attached to the center of the front surface of the housing 1. Then, speakers are attached to the left and right sides of the cathode ray tube 2. The left and right speakers have the same structure, and a front load horn 4 and a back load horn 5 are connected to a speaker box 3 having a built-in full-range type speaker unit. In this case, the back load horn 5 is the front load horn 4.
The front load horn 4 and the back load horn 5 are located below the speaker box 3
The inner cross-sectional area of the cathode-ray tube 2 is increased with increasing distance from it, and the width of the cathode-ray tube 2 is narrowed so that it can be accommodated beside it. The front end 4a of the front load horn 4 and the front end 5a of the back load horn 5 face the front surface of the television receiver. Then, a protective member 6 called a saran net or the like that does not prevent the output of sound is arranged on the left and right sides of the front surface of the housing 1 facing the tip portions 4a and 5a of the horns 4 and 5, respectively. Therefore, the speaker unit and the horn are hidden by the protection member 6 so that they cannot be directly seen from the outside.

Next, FIG. 2 is a cross-sectional view showing the inside and the surroundings of the speaker box 3. In FIG. 2, 7 is a full-range type speaker unit, which is mounted on the front surface of the speaker box 3. There is. Then, the front load horn 4 is attached so as to pick up the sound output from the front of the speaker unit 7, and the speaker box 3 is attached from the rear of the speaker unit 7.
The back load horn 5 is attached so as to pick up the sound emitted inside. By mounting the horns 4 and 5 in this way, the sound output to the outside via the front load horn 4 is mainly output as the sound output from the front surface of the speaker unit 7 is compared to the outside. It becomes a voice with a high target frequency (that is, a mid-high range sound). Further, the sound output to the outside via the back load horn 5 indirectly picks up the sound output from the rear of the speaker unit 7, so that the sound mainly has a relatively low frequency (that is, low frequency sound).

In this case, the sound output from the front of the speaker unit 7 to the outside of the housing 1 via the front load horn 4 and the sound from the rear of the speaker unit 7 via the speaker box 3 and the back load horn 5 to the housing. The voice output to the outside of 1 is a voice whose phase is inverted,
Set the length of each horn 4, 5. Therefore, the length of the front load horn 4 and the length of the back load horn 5 are not the same. By setting in this way, the low frequency sound reproduction system by this speaker becomes a phase inversion type (bass reflex type).

Further, in this example, the side surface of the front load horn 4 is closer to the speaker unit 7 (that is, the tip portion 4a).
A plurality of through holes 4b having a small diameter are provided on the side (away from).
By providing the through hole 4b, the mid-high range sound output to the outside via the front load horn 4 does not remain in the front load horn 4.

According to the speaker thus constructed,
High quality sound can be efficiently reproduced. That is,
The presence of the front load horn 4 improves the reproduction efficiency of the middle and high range sounds by about 3 to 6 dB as compared with the case where the front load horn is not provided and the back load horn 5
With this, the reproduction efficiency of low frequency sound is also improved. And
Since the front road horn 4 is provided with a plurality of through holes 4b, the mid-high range sound is not confined in the front load horn 4, and the mid-high range sound quality is improved. Therefore, even though the speaker uses the full-range speaker unit 7, it can be reproduced with good sound quality from low-range sound to high-range sound. The front load horn 4 and the back load horn 5 having these effects are formed in a shape with a narrow width as shown in FIGS. 1 and 2, so that the left and right sides of the cathode ray tube 2 in the television receiver are provided. It can be efficiently accommodated in the space, and the housing 1 of the television receiver can be made compact.

In the above embodiment, the low-frequency sound output via the back load horn is output from the front surface of the television receiver, but it is output from other parts. May be. For example, as shown in FIG. 3, the back load horn 8 has a shape that connects the lower portion of the speaker box 3 and the upper surface of the housing 1, and outputs the sound output to the rear of the speaker unit 7 to the upper surface of the housing 1. You may guide it. Further, as shown in the front of the television receiver in FIG. 4, the back load horns 9 of the left and right speakers are integrally connected to output a low frequency sound to the outside from the same portion above the neck portion of the cathode ray tube 2. It may be allowed to. Even in this case, since the low frequency sound has almost no directivity, the stereo sense due to the sounds output from the left and right speakers is not impaired.

Further, as shown in a cross section in FIG. 5, a full-range type speaker unit 11 is arranged in the center of the speaker box 10, and a mid-high range sound output from the front surface of the speaker unit 11 is tipped by a front load horn 12. While leading from the portion 12a to the front side of the television receiver,
Above and below the front load horn 12, duct portions 10a and 10b for guiding low-frequency sound output from the rear of the speaker unit 11 to the front side of the television receiver are provided integrally with the speaker box 10, and the duct portion 10a is provided. , 10
b may function as a back load horn. In this case as well, it is needless to say that a through hole (not shown) may be provided on the side surface of the front load horn 12 so as to prevent middle and high range sounds from being muffled.

[0017]

According to the present invention, the mid and high frequencies of the sound output from the speaker unit are satisfactorily output via the front load horn, and the low frequency sound output from the same speaker unit is output via the back load horn. Sound is output satisfactorily, and sound with good sound quality from low to high frequencies can be reproduced using a full-range speaker unit. In this case, since there is a through hole on the side surface of the front load horn, the reproduced sound does not stay inside the horn, and the sound quality of middle and high tones is improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view of an example.

FIG. 3 is a sectional view showing another embodiment of the present invention.

FIG. 4 is a front view showing another embodiment of the present invention.

FIG. 5 is a cross-sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 1 case 2 cathode ray tube 3 speaker box 4 front load horn 4b through hole 5 back load horn 7 speaker unit

Claims (2)

[Claims] 1. A speaker for a television receiver built in a casing constituting a main body of a television receiver, wherein a speaker unit arranged in the casing and a sound output from a front surface of the speaker unit are A television having a front load horn that transmits to the outside of the housing and a back load horn that transmits the sound output from the rear of the speaker unit to the outside of the housing, and a through hole provided on the side surface of the front load horn. Speaker for John receiver. 2. The length of the front load horn and the length of the back load horn are changed to change the phase of the sound output from the front of the speaker unit and the phase of the sound output from the rear of the speaker unit. The television receiver speaker according to claim 1, wherein the speaker is a television receiver.