JPH11266489A - Receiver built-in structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize enhanced sound quality by preventing a sound adjustment range from being narrowed even when the internal volume of a case is reduced through miniaturization of the case. SOLUTION: This receiver built-in structure is provided with an ear pad 14 placed in front of a receiver 10 and a case 12 placed behind the receiver 10 to clamp the receiver 10 with the ear pad 14, and a hole 14b to lead a sound from the receiver 10 directly to a human ear is made to the ear pad 14; holes 12a, 12b to leak the voice from the receiver 10 in the rear side of the receiver 10 are made to the case 12; and a gap 18 to leak the voice outputted from the receiver 10 to the outside of the ear pad 14 and the case 12 is formed between the ear pad 14 and the case 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiver built-in structure used for a receiver section of a portable telephone or the like.

[0002]

2. Description of the Related Art As a conventional receiver built-in structure, for example, there is a leakage type receiver unit formed at an end of a portable telephone as shown in FIG. In the receiver section shown in the figure, a receiver 30 has an earpiece 34 arranged in front thereof and a case 32 arranged behind it.
And it is arranged between them.

A tip of a rib 34a integrally formed with the ear contact portion 34 is in contact with the ear contact portion 34 of the receiver 30, and an elastic cushion 36 is sandwiched between the case portion 32 of the receiver 30. It is rarely provided. The ear cover 34 is a portion literally applied to a human ear,
A hole 34b is formed in a portion of the earpiece 34 facing the receiver 30 so that the sound output from the receiver 30 can be directly put into a human ear.

The case 32 constitutes a large part of the outer shape of the portable telephone, and a hole 32a is formed in a part of the case 32 rearward (downward in the figure) from the periphery of the earpiece 34. At the same time, a hole 32b is formed in the case portion 32 behind the receiver 30.

The holes 32a and 32b of the case 32 are
This is for allowing the sound from the receiver 30 to leak to the rear of the receiver 30. By allowing the sound from the receiver 30 to leak to the rear in this way, the strength of the sound output from the receiver 30 per ear can be softened and the sound quality of the sound entering the ear can be improved. Can be realized.

[0006]

However, in such a handset of a portable telephone having a conventional receiver built-in structure, the fact that the sound from the receiver 30 leaks to the rear thereof does not correspond to the case 32. Since the sound leaks to the inside, when the size of the case portion 32 is reduced, the internal volume of the case portion 32 is reduced, and the range of acoustic adjustment is narrowed, so that it becomes difficult to obtain a desired frequency characteristic. However, there has been a problem that it is difficult to improve the sound quality.

In view of the above-mentioned problems, the present invention realizes an improvement in sound quality by preventing the range of acoustic adjustment from being narrowed even when the case is downsized and its internal volume is reduced. It is an object of the present invention to provide a receiver built-in structure that is easy to perform.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is directed to an earpiece disposed in front of a receiver and a receiver arranged behind the receiver and the earpiece. A case portion to be sandwiched between the ear portions, and a hole is formed in the ear contact portion to allow sound from the receiver to enter directly into the human ear, so that the sound from the receiver leaks to the rear of the receiver in the case portion. And a gap is formed between the earpiece and the case to allow the sound output from the receiver to leak to the outside of the earpiece and the case.

According to the receiver built-in structure having such a configuration, a gap is formed between the earpiece and the case to leak the sound output from the receiver to the outside of the earpiece and the case. By leaking the sound from the receiver through the gap to the outside of the earpiece and the case, even if the case is downsized and its internal volume is reduced, the range of sound adjustment can be prevented from being narrowed. it can.

[0010]

Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a diagram referred to for explaining a receiver section of a mobile phone according to a first embodiment of a receiver built-in structure according to the present invention.

FIG. 1 is a view showing a receiver section of a portable telephone. In particular, this receiver section is of a leakage type. In the receiver section shown in FIG.
Is disposed between the case portion 12 disposed at the rear thereof and the ear cover portion 14 disposed at the front thereof.

An end of a rib 14a formed integrally with the earpiece 14 is in contact with the earpiece 14 of the receiver 10, and an elastic cushion 16 is provided on the case 12 side of the receiver 10. It is provided sandwiched. The ear cover 14 is a portion literally applied to a human ear,
A hole 14b is formed in a portion of the earpiece 14 facing the receiver 10 so that the sound output from the receiver 10 can be directly put into a human ear.

The case portion 12 constitutes most of the outer shape of the mobile phone, and a hole 12a is formed in the portion of the case portion 12 rearward (downward in the figure) from the receiver 10 and an ear cover is provided. A hole 12b is formed in a portion of the case portion 12 behind the peripheral edge of the portion 14. Also,
A gap 18 is formed between the case portion 12 and the peripheral portion of the ear portion 14 and communicates with the ear portion 14 and the outside of the case portion 12.

In the receiver of the portable telephone having such a configuration, an electric signal is converted into a sound and the receiver 10
The sound output from the case 12 not only directly enters the human ear through the hole 14 b of the earpiece 14, but also enters the hole 12 b of the case 12.
a, 12b, leaks to the rear of the receiver 10, that is, to the inside of the case portion 12, and also leaks to the outside of the ear cover portion 14 and the case portion 12 from the gap 18 between the case portion 12 and the ear cover portion 14. ing.

Since the sound output from the receiver 10 is leaked to the outside of the ear cover 14 and the case 12 in this manner, the range of the sound adjustment can be expanded. Even if the size of the unit 12 is reduced and its internal volume is reduced, it is possible to prevent the range of acoustic adjustment from being narrowed, and to improve the sound quality that enters the human ear.

If the sealing of the case 12 varies, the range of the sound adjustment also varies, but even in such a case, the sound output from the receiver 10 is transmitted from the gap 18 through the ear cover 14. And case 12
In this way, the variation in the range of the sound adjustment can be absorbed, and the sound quality that can be heard by the human ear can be improved.

Further, according to the present invention, sound is leaked to the outside of the earpiece and the case, so that sound adjustment can be performed regardless of the size, internal volume, internal structure, etc. of the device such as a telephone. Because it is possible to expand the range,
It becomes easy to use the leakage type receiver in the receiver of the mobile phone.

Further, in the above-described embodiment, since the peripheral portion of the ear cover portion 14 is formed so as to extend to the side of the case portion 12, when the ear cover portion 14 is applied to the ear, the gap 18 is formed. Can be prevented from being inaudible through the ear canal by closing the earphones or earlobe.

In the above embodiment, the case where the present invention is applied to the receiver of a mobile phone has been described. However, the present invention is not limited to the mobile phone, and the receiver of another communication device such as a transceiver can be used. The present invention can also be applied to a headset such as a headset of a radio unit, a radio, a television, or the like, a headphone of an audio device, or the like.

Although the embodiments of the present invention have been specifically described above, the present invention is not limited to the above-described embodiments, and various other modifications may be made based on the technical concept of the present invention. Can be changed.

[0021]

As described above, according to the present invention,
By allowing the sound output from the receiver to leak to the outside of the earpiece and the case, the range of sound adjustment can be expanded, so that the case can be downsized and the internal volume can be reduced. Thus, it is possible to improve the sound quality that enters the human ear.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view showing a leakage type receiver section of a mobile phone according to a first embodiment of a receiver built-in structure according to the present invention.

FIG. 2 is an enlarged cross-sectional view showing a leakage type receiver section of a conventional mobile phone.

[Explanation of symbols]

10 ... Receiver, 12 ... Case part, 12a, 12b ...
Holes, 14 ... earpieces, 14a ... ribs, 14b ... holes, 16
... cushion, 18 ... gap, 30 ... receiver, 32 ...
Case part, 32a, 32b ... hole, 34 ... earpiece part, 34
a: rib, 34b: hole, 36: cushion

Claims (1)

[Claims] 1. An earrest disposed in front of a receiver, and a case disposed behind the receiver and disposed so as to sandwich the receiver between the earrest and the earrest. Forming a hole for directing the sound from the receiver into the human ear, forming a hole for leaking the sound from the receiver to the rear of the receiver in the case portion, the ear cover portion and the case portion; A gap for leaking the sound output from the receiver to the outside of the earpiece and the case between the receiver and the case.