Earbud

A technology of earphones and loudspeakers, which is applied in earpiece/earphone accessories, earphone manufacturing/assembly, internal auditory earphones, etc. It can solve problems such as poor sound quality, limitation of the length of the vent hole, length of the sound conduit, and sound wave leakage.

Pending Publication Date: 2021-09-28
PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the earphone described in Patent Document 1, since the vent hole is arranged in the sound conduit, the length of the vent hole is limited by the length of the sound conduit.
For this reason, the air resistance in the vent hole is limited to be small, and the sound waves in the low-frequency range in the external auditory canal are easily leaked to the outside through the vent hole.
As a result, there is a problem that the sound quality in the low frequency range in the external auditory canal deteriorates

Method used

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Experimental program
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Effect test

no. 1 approach

[0043] figure 1 It is a configuration diagram of the earphone 10 according to the first embodiment. in addition, figure 1 The left figure in the figure shows the front cross-sectional view of the earphone 10 in the state of being installed on the ear, figure 1 The right figure in FIG. 2 is a side view of the earphone 10 attached to the ear as seen from the eardrum 102 to the outside of the external auditory canal 101 . Such as figure 1 As shown in the left figure of , the earphone 10 includes a speaker unit 11 , a first housing 12 , a sound conduit 15 , earplugs 14 , and a vent tube 13 .

[0044] The speaker unit 11 generates sound waves based on sound signals input from an external device (not shown) via wire or wirelessly.

[0045] The first case 12 is a substantially cylindrical member for accommodating the speaker unit 11 . A first opening 121 and a second opening 122 are provided on the right side 128 of the first housing 12 . A third opening 123 is provided on the ...

no. 2 approach

[0061] image 3 It is a schematic diagram showing the structure of the earphone 10a according to the second embodiment. in addition, image 3 and figure 1 The left figure in FIG. 22 similarly shows a front sectional view of the earphone 10 in a state of being attached to the ear. However, the drawing of the inside of the external auditory canal 101 is omitted. In addition, in the following description, the same code|symbol is attached|subjected to the same component as the above-mentioned component, and the description is abbreviate|omitted.

[0062] Such as image 3 As shown, the earphone 10 a according to the second embodiment includes a speaker unit 11 , a first housing 12 , a sound conduit 15 , earplugs 14 , and a vent tube 13 a, and also includes a second housing 22 .

[0063] The second case 22 is a box-shaped member that is vertically long, and accommodates a control circuit 16 for controlling the driving of the speaker unit 11 and a battery 17 for supplying electr...

no. 3 approach

[0071] Figure 4 It is a schematic diagram showing the structure of the earphone 10b according to the third embodiment. in addition, Figure 4 and figure 1 The left figure of FIG. 20 shows a front cross-sectional view of the earphone 10b in the state of being attached to the ear. However, illustration of the inside of the external auditory canal 101 is omitted.

[0072] Such as Figure 4 As shown, the earphone 10b according to the third embodiment includes a speaker unit 11, a first housing 12, a sound conduit 15, an earplug 14, a vent tube 13b, and a second housing 22b.

[0073] The second case 22 b is a vertically elongated box-shaped member, and accommodates a control circuit 16 for controlling driving of the speaker unit 11 and a battery 17 for supplying electric power for driving the speaker unit 11 . The right surface 228b of the second housing 22b is arranged to face the left surface 129 of the first housing 12 . A fourth opening 224b (second opening) is provided ...

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Abstract

An earbud according to the present invention comprises: a speaker unit that generates sound waves; a first housing that accommodates the speaker unit and comprises a first opening facing a sound-wave-generating surface of the speaker unit; a sound conduit that is connected at one end to the first opening; an ear plug that is attached to the other end of the sound conduit and is inserted into the ear canal; and an air conduit, independent of the sound conduit, that is provided so as to pass through the ear plug and the first housing.

Description

technical field [0001] The present invention relates to an earphone (earbud) used by inserting earplugs into the external auditory canal. Background technique [0002] Conventionally, earphones used by inserting earplugs into the external auditory canal are known. However, such earphones will keep the space in the external auditory canal in a sealed state, causing discomfort due to stuffy heat. For this reason, for example, patent document 1 proposes a kind of earphone, and earplug is installed on the sound conduit that discharges the sound wave that speaker unit sends in the external auditory canal, and vent hole is arranged in sound conduit, by controlling the opening area of ​​this vent hole The airtight state of the space in the external auditory canal is adjusted. [0003] However, in the earphone described in Patent Document 1, since the vent hole is provided in the sound conduit, the length of the vent hole is limited by the length of the sound conduit. For this re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/10
CPCH04R1/1016H04R1/1066H04R1/1075H04R2460/11H04R2460/05H04R1/1041H04R2460/15
Inventor 松村俊之
Owner PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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