Earphone
An earphone includes: a housing; a dynamic driver unit provided in the housing; and a sound conduit having a length of approximately 10 mm or more, the sound conduit being configured to transmit sound output from the dynamic driver unit.
1. An earphone comprising:
a housing which comprises a dynamic driver unit;
a sound conduit configured to transmit a first sound output from the dynamic driver unit; and
a balance armature driver unit configured to output a second sound,
wherein at least a part of the second sound is released outside the housing, through the dynamic driver unit, to attenuate low frequencies of the second sound.
2. The earphone according to claim 1 , wherein a length of the sound conduit is less than or equal to 40 mm.
3. The earphone according to claim 2 , wherein the length of the sound conduit is 30 mm.
4. The earphone according to claim 1 , wherein a diameter of the sound conduit is 1 mm.
5. The earphone according to claim 1 , wherein the sound conduit includes a spring body.
6. The earphone according to claim 1 , wherein the dynamic driver unit comprises a characteristics adjustment portion configured to adjust characteristics of the second sound.
7. The earphone according to claim 6 ,
wherein the characteristics adjustment portion comprises a plurality of small holes, and
wherein the second sound passes through the characteristics adjustment portion.
8. The earphone according to claim 1 , wherein the dynamic driver unit is wearable outside a face of a user.
9. The earphone according to claim 8 , wherein the dynamic driver unit is wearable outside of a tragus of the user.
10. The earphone according to claim 9 , wherein the housing has a shape to fit into an ear of the user.
11. The earphone according to claim 1 , wherein the first sound is released from the housing via a guide hole.
12. The earphone according to claim 1 , wherein the balance armature driver unit comprises a voice coil, a driver rod, and a diaphragm.
13. The earphone according to claim 12 , wherein the balance armature driver unit is configured to vibrate the diaphragm by the driver rod.
14. The earphone according to claim 1 , wherein the dynamic driver unit comprises an air flow resistor, a hole-shaped air vent, and a diaphragm.
15. The earphone according to claim 1 , wherein the dynamic driver unit comprises a case filled with a sound absorbing material.
16. The earphone according to claim 1 , wherein a thickness of the housing is less than or equal to 1.5 mm.
17. The earphone according to claim 1 , further comprising a cord connected to the dynamic driver unit through a cylindrical portion.
18. The earphone according to claim 1 , wherein the housing further comprises a UV hardening resin.