JP2558635B2 - Headphone - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to headphones used by being worn in an ear shell.

2. Description of the Related Art In recent years, in addition to the conventional method in which a headphone unit is crimped from the outside of the auricle with a headband, the headphone unit is made smaller and attached to the inside of the auricle.

Problems to be Solved by the Invention However, in the above-mentioned configuration, the housing cannot be completely inserted into the auricle unless the outer diameter of the housing that houses the unit is set to about 14 mm to 18 mm. However, if the unit is small, the reproduction limit of bass is not lowered so much that the sound quality is dissatisfied.

In view of the above-mentioned problems, the present invention provides a headphone configured so that at least a portion to be inserted into the auricle has the same outer shape as that of the related art, but reproduction can be performed to a degree smaller than that of the related art.

Means for Solving the Problems In order to solve the above problems, the headphones of the present invention are
A front housing having an outer dimension that can be inserted into at least the inside of the auricle, and a front housing that is provided farther from the head than the front housing and has an outer diameter larger than that of the front housing. The front housing includes a low-pitched sound hole and a high-pitched sound hole, and a high-pitched sound unit housing portion inside the front housing, which is provided with a rear housing arranged so as to be positioned outside the shell. The rear housing has a bass unit inside thereof, the treble unit accommodating portion has a treble unit inside thereof, and a front face of the treble unit has a treble hole for the front housing. Between the front housing and the treble unit accommodating portion, there is a bass sound path that communicates the front surface of the bass unit in the rear housing with the bass sound hole. The treble unit rear portion of the sound unit storage portion communicates with the outside of the front housing by the treble rear sound passage separated from the bass sound passage, and the bass unit rear portion of the rear housing is connected to the bass rear sound passage. It is in communication with the outside of the rear housing by way of a road.

Action The present invention, by the above-described configuration, high-pitched sound is reproduced by a small-diameter high-pitched sound unit inserted in the ear shell, and low-pitched sound is reproduced by a sufficiently large-diameter bass sound unit arranged outside the ear shell, Moreover, since the rear surface of each unit is sealed and opened to the outside with a dedicated sound path, bass can be reproduced to a lower range than before, and the characteristics of each unit can be easily adjusted without interfering with each other. It will be.

Embodiment Hereinafter, a headphone according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4.

In the figure, 1 is a front housing, 2 is a rear housing, and a high-pitched sound unit 3 and a low-pitched sound unit 4 are housed therein. 3'is a diaphragm of the high-pitched sound unit 3 and 4'is a low-pitched sound. 2 is a vibration plate of the unit 4. Reference numeral 5 is a high-pitched sound hole provided in the front housing 1, 6 is a high-temperature unit case having an integrally formed rear face plate 6 ', 7 is a bass sound passage, and 8 is a bass sound provided in the housing 1. A hole, 9 is a rear sound path provided in the rear housing 2, 9'is an opening provided in the rear sound path 9, and 10 is a sound absorbing material provided in the bass sound path 7. 11 is a rear sound hole provided in the high temperature unit 3, 12
Is a braking material, and 13 is an input terminal plate of the high temperature unit 3.
14 is a high temperature rear sound path leading from the high temperature unit case 6 to the outside, 14 'is an opening provided at its end, 15 is a recess provided on the outer periphery of the front housing 1 as necessary, and a projection at the bottom of the auricle. It is locked at the start. 16 is the input code, 17
Is a bushing for protecting the input code, 18 and 19 are input terminals, and 20 is a capacitor.

The operation of the headphones configured as described above will be described below.

First, the front housing 1 of the headphones is inserted into the auricle. At this time, the concave portion 15 engages with the protrusion of the lower part of the auricle, and is stably held. Since the rear housing 2 houses the bass unit 4 therein, the outer diameter is larger than that of the housing 1, but the rear housing 2 is located outside the auricle, so that there is no problem in mounting. The high-pitched sound unit 3 is deeply inserted into the auricle and faithfully transmits the high temperature to the inner ear. On the other hand, the bass unit 4 is located behind the treble unit 3, but the wavelength of the sound is long and the outer diameter of the unit is large, so that the unit is efficient, and the treble unit 3 is sufficiently balanced in volume. The bass emitted from the bass unit 4 passes through the bass sound path 7 and is radiated from the bass sound hole 8 into the auricle. The treble unit case 6 seals the rear of the treble unit 3 and is opened to the outside by separating from the bass sound passage 7 by the treble rear sound passage 14 so that the output sound pressure of the bass unit 4 is for the treble sound. It prevents entering the rear sound path 14 of the unit 3 and giving cross-modulation to its diaphragm 3 '. Like the treble unit 3, the bass unit 4 also has a rear sound hole and a braking material (neither of which is shown), and the rear housing 2 is provided with a rear sound passage 9 for bass, and an opening 9 is provided at one end thereof. 'Is provided. In this configuration, both the high-temperature unit and the low-pitched sound unit have their rear parts hermetically sealed and communicated to the outside through separate sound paths, thereby adjusting the acoustic impedance of the rear part of each unit for optimum operating conditions. By doing so, it is possible to improve the balance between the frequency characteristics of the high frequency band and the low frequency band.

The input cord 16 is connected to each unit as shown in FIG. In addition, the high-pitched sound unit 3 is provided with a characteristic of cutting the low-pitched sound portion, and the low-pitched sound passage 7
The capacitor is omitted by providing a sound absorbing material 10 inside to absorb the high-pitched sound, or by providing the low-pitched sound unit 4 with a characteristic that cuts off the high-pitched sound.
A circuit such as (C) can also work.

As described above, according to the present embodiment, the high-pitched sound unit is arranged toward the front surface in the housing whose outer dimension is at least such that the front surface can be inserted into the ear shell. By arranging a large-diameter bass unit at the position, it is possible to reproduce deep bass that was difficult with conventional ear-insertion type headphones, and at the same time, in the rear sound path and bass section of the treble unit. Since the front sound path is isolated, it prevents the output sound pressure of the bass unit 4 from entering from the rear sound path 14 of the treble unit 3 and giving cross-modulation to its diaphragm 3 '.

In the above embodiments, both the front housing 1 and the rear housing 2 should be described as cylindrical, but these are oval in cross section or other appropriate shape in consideration of how they fit in the ears and design considerations. It may be.

Moreover, although it is described with one ear in the figure, it is naturally possible to use it for both ears and stereo.

Although the bass sound path 7 is illustrated as being concentrically arranged with respect to the treble unit 3, the arrangement may not be concentric, and even if the bass sound paths 7 are arranged on one side, they may be arranged. It's good.

Further, the rear sound path 14 for treble and its opening 14 'and the rear sound path 9 for bass and its opening 9'may be plural in number, and the shape of the sound path may be changed such as deformed or detoured. .

EFFECTS OF THE INVENTION As described above, according to the present invention, the high-pitched sound unit is arranged toward the front surface and the low-pitched sound unit is arranged behind it in at least the housing whose outer dimension is such that it can be inserted into the auricle. This makes it possible to make the bass unit larger than the conventional unit by taking it out of the auricle, so it is possible to reproduce deep bass that was difficult with conventional headphones that are inserted in the auricle. Both the bass unit and the rear unit are hermetically sealed, and by communicating with the outside through separate sound paths, the acoustic impedance of the rear unit is adjusted for each unit, and the high and low ranges are set by setting the optimum operating conditions. It is possible to improve the balance of the frequency characteristics of. Furthermore, since the rear sound path of the treble unit and the front sound path of the low sound unit are separated, the output sound pressure of the low sound unit enters from the rear sound path of the high sound unit and gives cross modulation to the diaphragm. It is an extremely effective invention because it can realize excellent headphones, such as preventing

[Brief description of drawings]

FIG. 1 is a side sectional view of headphones according to an embodiment of the present invention, FIG. 2 is a side view of the same, and FIG. 3 is A- in FIG.
A'sectional view and FIG. 4 are circuit diagrams of examples of use. 1 ... front housing, 2 ... rear housing, 3 ...
High-pitched sound unit, 4 ... Low-pitched sound unit, 5 ... High-pitched sound hole, 6 ... High-pitched sound unit case, 7 ... Low-pitched sound passage, 8 ... Low-pitched sound hole, 9 ... Low-pitched rear sound Road, 9 '...
… Aperture, 14 …… Rear sound path for treble, 14 ′ …… Aperture.

Claims (1)

(57) [Claims] 1. A front housing 1 having an outer dimension that can be inserted into at least the inside of an auricle, and a front housing 1 provided on a side farther from a head than the front housing 1 and outside the front housing 1. The front housing 1 includes a housing having a large diameter and a rear housing 2 arranged so as to be located outside the auricle at the time of wearing, and the front housing 1 has a bass sound hole 8 and a treble sound hole on its front surface. 5 has a treble unit accommodating portion 6 therein, the rear housing 2 has a bass unit 4 therein, and the treble unit accommodating portion 6 has a treble unit 3 therein. However, the front surface of the treble unit 3 communicates with the treble sound hole 5 of the front housing 1, and between the front housing 1 and the treble unit accommodating portion 6 for the bass sound in the rear housing 2. The front of unit 4 There is a bass sound path 7 communicating with the bass sound hole 8, and a rear part of the treble unit 3 of the treble unit housing 6 is separated from the bass sound path 7 and is a treble rear sound. Road 14
Headphones characterized in that they communicate with the outside of the front housing 1 by means of, and the rear part of the bass unit 4 of the rear housing communicates with the outside of the rear housing 2 through a rear sound path 9 for bass.