JPH0530586A - Inner ear type headphone - Google Patents

Abstract

PURPOSE:To improve the efficiency of sound pressure transmission to a user's eardrum. CONSTITUTION:In an inner ear type headphone 1, storing a speaker unit 3 in a housing 2, an axis B passing the center of the speaker unit 3 is inclined from an axis A passing the center of the housing 2 only by an angle (a) in the direction of the external auditory meatus 6. Thereby sound pressure from the unit 3 is efficiently passed through the external auditory meatus 6 and sent to the eardrum.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inner ear type headphone used for a headphone stereo or the like.

[0002]

2. Description of the Related Art Inner-ear type headphones are small and light in weight and have a structure that can be attached to and held in a concave portion of the concha of the concha, so that they are often used in headphone stereos which are often used outdoors or in trains. Be done. The general structure of this inner ear type headphone is that the speaker unit is housed in the housing, and the sound pressure generated by the diaphragm of the speaker unit is diffused forward from a large number of small holes provided in the front surface of the housing. Is.

FIG. 2 shows such a conventional inner-ear type headphone. This inner ear type headphone 1 has a speaker unit 3 inside a housing 2.
And the housing 2 is mounted in the recess 4 of the concha of the ear and used. The speaker unit 3 emits sound pressure to the front (to the left in the drawing) and diffuses to the outside through a large number of small holes 5 provided in the front part of the housing 2. Reference numeral 6 is an ear canal that transmits sound pressure to the eardrum.

[0004]

Although the inner ear type headphones are used in this way, as is apparent from FIG. 2, most of the front surface of the housing 2 contacts the concha of the ear, and the ear canal 6 is formed. The sound wave indicated by the pointing arrow becomes a small part of the many small holes 5 of the housing 2. As a result, the efficiency of sound pressure transmission to the eardrum is poor, so the corresponding amount of sound equipment (headphone stereo)
I had to raise the volume of this, which was one of the factors that caused the sound leakage.

The present invention has been made in view of this point, and an object of the present invention is to provide an inner-ear type headphone in which the transmission efficiency of sound pressure to the eardrum is improved.

[0006]

[Means for Solving the Problems] As a means for solving the above problems, the present invention provides an inner ear which accommodates a speaker unit inside a housing and mounts and holds the housing in a recess of the concha of the ear. In the type headphone, the axis line passing through the center of the speaker unit is inclined with respect to the axis line passing through the center of the housing.

[0007]

With this structure, when the housing is mounted in the concavity of the concha of the ear, the speaker unit inside the housing can be directed toward the external auditory meatus, so that most of the generated sound pressure is eliminated. It can be transmitted to the eardrum.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIG. In the present invention shown in this figure, the axis B passing through the center of the speaker unit 3 is inclined toward the ear canal 6 side with respect to the axis A passing through the center of the housing 2. As a result, the angle b between the line C parallel to the line A and the center line D of the ear canal 6 is substantially equal.

When the speaker unit 3 is thus inclined and set in the housing 2, the sound pressure generated by the speaker unit 3 is not disturbed by the concha of the ear, as shown by the arrow in the figure. Most of them go to the ear canal 6. As a result, the sound pressure transmission efficiency to the eardrum is significantly improved.

[0010]

EFFECTS OF THE INVENTION The present invention is an inner-ear type headphone constructed as described above, so that it is possible to remarkably improve the efficiency of sound pressure transmission to the eardrum even though it has a simple structure.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing an embodiment of the present invention in use.

FIG. 2 is a partial cross-sectional view showing a conventional inner ear type headphone in use.

[Explanation of symbols]

 1 Inner-ear type headphones 2 Housing 3 Speaker unit 4 Concavity of concha space 6 External ear canal

Claims (1)

Claim: What is claimed is: 1. An inner-ear type headphone in which a speaker unit is housed inside a housing, and the housing is mounted and held in a recess of a concha of the ear, and an axis line passing through the center of the housing On the other hand, the inner-ear type headphones are characterized in that the axis line passing through the center of the speaker unit is inclined.