Grill-integrated low-pass filter and speaker including the same
Disclosed herein is a grill-integrated low-pass filter. The grill-integrated low-pass filter includes a conduit-type low-pass filter part in which a sound conduit is formed inside an internal space of a grill, which is a mechanism assembled and used in a housing, in an empty tubular form, and the conduit-type low-pass filter part is integrated with the grill. According to the present invention, there are provided the grill-integrated low-pass filter that is designed in a structure in which the sound conduit is formed inside the internal space of the grill disposed and used in a housing in order to protect a speaker driver, etc. and is thus fabricated in a grill-integrated form, thereby achieving the effects of improving the sound quality of the speaker and reducing characteristic deviations in a low-frequency band.
1. A low-pass filter-type speaker cover comprising a conduit-type low-pass filter part in which a sound conduit is formed inside an internal space of the speaker cover, which is configured to be assembled in an exit portion of a speaker housing, in an empty tubular form,
wherein a sound conduit entrance is configured to be disposed near an edge of a diaphragm and a sound conduit exit is formed at an end of a circular conduit of a spiral shape extended from the sound conduit entrance wherein the sound conduit entrance is vertically extended and configured to be protruded to an inside of the speaker housing, and the sound conduit exit is vertically extended and configured to be protruded to an outside of the speaker housing, thereby allowing sound waves and air to pass from the inside to the outside of the speaker housing,
wherein a center of the diaphragm curves into the speaker cover,
whereby the low-pass filter-type speaker cover functions not only as a speaker cover, but also as a low-pass filter.
2. The low-pass filter-type speaker cover of claim 1 , wherein the conduit-type low-pass filter part has a predetermined length and a predetermined sectional area wherein the length and the sectional area are adjusted to improve sound quality.
3. The low-pass filter-type speaker cover of claim 2 , wherein the length and the sectional area of the conduit-type low-pass filter part are configured such that rolling off is formed in a predetermined low-frequency band.
4. A speaker comprising:
a housing;
a sound conversion unit mounted inside the housing; and
a low-pass filter-type speaker cover assembled into the housing;
wherein the low-pass filter-type speaker cover is the low-pass filter-type speaker cover set forth in claim 3 .
5. A speaker comprising:
a housing;
a sound conversion unit mounted inside the housing; and
a low-pass filter-type speaker cover assembled into the housing;
wherein the low-pass filter-type speaker cover is the low-pass filter-type speaker cover set forth in claim 2 .
6. A speaker comprising:
a housing;
a sound conversion unit mounted inside the housing; and
a low-pass filter-type speaker cover assembled into the housing;
wherein the low-pass filter-type speaker cover is the low-pass filter-type speaker cover set forth in claim 1 .