JPH0132470Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in an earphone in which a headband is worn on the head and a speaker is placed in contact with the ear.

Traditionally, this type of earphone has been the first
There are the earmuff type shown in the figure, the over-the-ear type shown in Fig. 2, the inner ear type shown in Fig. 3, and the vertical inner ear type shown in Fig. 4.

In the earmuff type shown in Fig. 1, the pad 1 is placed in contact with the outside of the ear, so that the ear pad a is also covered by the speaker 4, which is covered with the pad 1, base 2, and case 3, and the center line of the speaker 4 is A is perpendicular to the ear plane.

The on-the-ear type shown in Fig. 2 is a type in which a pad 1 is placed on the ear a, and the ear is covered with a speaker 4, which is covered with the pad 1, a base 2, and a case 3, and the central axis A of the speaker is on the ear surface. The head tilts toward the back of the head.

In the inner ear mold shown in Figure 3, the main body 5 is
The central axis A of the speaker is perpendicular to the ear surface.

In the vertical inner ear type shown in Fig. 4, the central axis A of the speaker of the main body 5 is oriented perpendicularly to the headband 6, so when the main body 5 is inserted into the concave b, the central axis A of the speaker is aligned with the ear surface. They become parallel.

However, conca b and external auditory canal c with the tympanic membrane
In terms of the positional relationship, the external auditory canal c is not located at the center of the concave b, but the external auditory canal c is located at the back of the anterior ear part a of the concave b. Also, if you look at Conca B from the whole ear,
It is located in front of the ear, not in the center.

Therefore, in terms of the positional relationship between the entire ear and the external auditory canal c, the external auditory canal c is located considerably forward.

Therefore, there are two types: a closed type (ear flap type) in which the headphone unit is placed on the ear, and an open type (ear flap type).
The center axis A of the speaker and the ear canal c are considerably offset from each other, and even for inner-ear type speakers, the center axis A of the speaker is offset from the ear canal c.
In the vertical inner ear type, as mentioned above, the center axis A of the speaker is offset by 90 degrees from the direction of the ear canal.

As mentioned above, since the central axis A of the speaker is shifted and faces perpendicular to the ear surface or backward, the sound emitted from the speaker hits concave B and then enters the ear canal C, and this sound When the sound enters the ear canal c, the distance of the sound coming from the part near the ear canal c and the part far from the ear canal is different, resulting in a phase difference.
This had a negative effect on the sound pressure received by the eardrum.

In order to eliminate these conventional drawbacks, the present invention tilts the central axis of the speaker toward the face to prevent the above-mentioned negative effects, and also improves the sound quality by having the rear part enter the concave. Its purpose is to block out external noise.

An embodiment of the present invention will be described below with reference to FIGS. 5 and 6.

Note that the same reference numerals as in the conventional example indicate the same parts.

Reference numeral 7 denotes a base attached to a headband 6 worn on the head, and a speaker body 8 attached to the base 7 is bent from a curved portion 7a so that its central axis A is inclined toward the face.

Therefore, when the headband 6 is placed on the head and the speaker body 8 is placed in the ear, the center axis A of the speaker faces the direction of the ear canal, the rear part enters the concave b, and about 80% of the concave b becomes the speaker. This is because it is blocked by the main body 8.

Then, in the front part of the ear where there is inevitably a large space due to the ear part a, the ear part a is removed and comes into contact with the face part,
Acts as a full board.

In this way, the contact to the front part of the ear and the coca b at the back
By immersing yourself in the speaker, you are less likely to be affected by the negative effects of sound coming from the rear of the speaker.

Also, depending on the bending angle of the curved portion 7a of the base 7,
The central axis A of the speaker faces the ear canal c, and the amount by which the rear part of the speaker body 8 enters the concave b is determined.

As mentioned above, in this invention, the center axis of the speaker coincides with the external auditory canal due to the bending of the base, which not only flattens the reproduction frequency characteristics, but also allows the reproduction of the 180° phase output from the rear of the speaker. Since it is not affected by different sounds, the flattening of the reproduction frequency characteristics is further promoted.

Furthermore, the sound emitted from the speaker does not easily escape outside the ear, and the volume in front of the speaker is small, which results in a high reproduction sound pressure, and the effect of the reproduction frequency on reduction caused by the sound coming from the rear of the speaker is small. The bass sound is sufficiently extended, so that even if a small speaker is used, the bass sound can be reproduced well.

In this way, since the speaker can be made smaller, the headphone can be made smaller and lighter, and the feeling of wearing the headphone can be improved.

[Brief explanation of the drawing]

1 to 4 are views of a conventional headphone installed, FIG. 5 is a cross-sectional view of an embodiment of the present invention in an installed state, and FIG. 6 is a side view of the same. 6...Headband, 7...Bass, 7a...
Music section, 8...Speaker body.

Claims (1)

[Scope of utility model registration request] A headphone characterized in that a speaker is attached to a headband attached to the head, the center line of the speaker faces the front of the face, and a base is bent so that the rear part is immersed in the concave part. .