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US 7,627,112 B2Granted
Sound guide for speaker and handset for mobile communication using the same
AssigneeLG Electronics Inc.
InventorYoung Hwan Sung
Life of this patent
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AssigneeLG Electronics Inc.
InventorYoung Hwan Sung
Estimating the term…
A sound guide for a speaker is capable of guiding a sound of a desired volume to a desired position regardless of installation structure of the speaker. The sound guide for a speaker includes a speaker support for supporting the speaker in a case, and a sound guide groove formed in an inner side of the speaker support, for guiding the direction of the audible signal of the speaker at a predetermined angle. The sound propagation groove has one side coupled with the speaker and other side coupled with a sound propagation hole which is formed in the case. A handset for mobile communication using the sound guide includes a case having a speaker therein, and a sound propagation hole for propagating the audible signal generated by the speaker to outside, wherein the speaker is slanted at a predetermined angle with respect to a front side of the case. Preferably, the sound guide is mounted in an upper side of the speaker to guide the audible signal to the sound propagation hole by directing the audible signal at a predetermined angle.
A mobile communication terminal comprising:
A mobile communication terminal comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
For obtaining desired directional characteristic only: by using a single transducer with sound reflecting, diffracting, directing or guiding means
Constructional features of telephone sets: portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
Constructional features of telephone sets: constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets: improving the acoustic characteristics by means of…
Term ended 2 Jan 2021 (estimated)
1. Field of the Invention
The present invention relates to a mobile communication handset, and more particularly to a speaker installed in a handset for mobile communication.
2. Background of the Related Art
The invention will be described in detail with reference to the following drawings in which like reference numerals refer to like elements wherein:
FIG. 1 is a drawing showing a front view of a related art handset for mobile communication;
FIG. 2 is a sectional view taken along line I-I of FIG. 1;
A sound guide according to one embodiment of the present invention and a handset for mobile communication using the sound guide will be described with reference to FIGS. 3 and 4. FIG. 3 is a sectional view illustrating a handset for mobile communication according to one embodiment of the present invention, and FIG. 4 is a front view of the device of FIG. 3.
The handset for mobile communication according to a preferred embodiment of the present invention preferably includes an LCD 20 in a front side 2a of the handset 1. A sound propagation hole 15 is formed in the upper side of the LCD 20 to propagate the sound generated by the speaker 10 to the ear of a user. Additionally, a filter 50 for filtering any foreign substance is provided in an inner side of the sound propagation hole 15.
In this embodiment of the present invention, the speaker 10 is preferably mounted at a predetermined angle, preferably about 90° with respect to the front side 2a of the case 2. This arrangement enables the length H2 between the speaker 10 and the upper side of the handset 1 to be reduced, thereby reducing the overall length of the handset and allowing the size of the LCD 20 to be increased. This embodiment has the disadvantage of the sound from the speaker 10 being propagated upwardly and thus failing to advance if the upper side of handset is blocked. Alternatively, the sound is reflected and is finally propagated to the outside of the handset through the sound propagation hole 15. In this case, however, the volume and articulation of the sound are deteriorated.