Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Mounting or support feature of housed loudspeaker
Reexamination Certificate
1998-05-15
2001-03-20
Chan, Wing F. (Department: 2743)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Mounting or support feature of housed loudspeaker
C381S306000, C381S333000, C381S345000, C381S354000, C181S151000, C181S198000
Reexamination Certificate
active
06205229
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a television having a device for preventing vibration of speaker, and more particularly to a television having a device for preventing vibration of speaker which minimizes vibration of speaker emitting medium/low bandwidth sound outside and vibration of a cabinet in which a speaker is mounted to prevent abnormal noise.
2. Description of the Prior Art
Generally, a television is composed of a sound receiving circuit portion consisting of sound receiving circuit for detecting sound signal of air-borne waves and speaker, an image receiving circuit portion for detecting image signal, a chrominance-generating circuit for transforming color signal transmitted to the image receiving circuit portion into original color for operation of a cathode-ray tube, and a synchronizing deflection circuit portion which picks up synchronizing signal of image signal to operate deflecting circuit horizontally/vertically on basis of synchronizing signal to form an image on fluorescent screen of the cathoderay tube. The speaker is installed in the cabinet of the television by a speaker mounting member, so that emits medium bandwidth sound/low bandwidth sound outside with high power.
In the conventional television composed as above, as shown in
FIG. 1
, the speaker mounting member
113
having a hollow portion is installed in the cabinet
101
of television in which a grill is formed on a front edge. A boss
107
for screw
109
is formed integrally with the speaker mounting member
113
on an upper/lower portion of the speaker mounting member
113
, so that the speaker mounting member
113
is fixed to the cabinet
101
by the screw
109
. The speaker
111
is attached on the speaker mounting member
113
fixed on the cabinet
101
, so that the speaker
111
emits sound outside through the grill
103
. Sound emitted from the speaker
111
is transformed into medium/low bandwidth sound through the hollow portion.
However, in the structure as above, when the speaker
111
emits sound, the speaker mounting member
113
mounted in the cabinet
101
vibrates and even the cabinet
101
vibrates too. Accordingly, synthesized sound by mutual resonance of the speaker mounting member
113
and the cabinet
101
causes abnormal noise. Therefore, quality of sound is reduced and sound having high power is not heard.
SUMMARY OF THE INVENTION
Therefore, the present invention has been proposed to overcome the above described problems in the prior art, and accordingly it is an object of the present invention to provide a television having a device for preventing vibration of speaker which minimizes vibration of speaker emitting medium/low bandwidth sound outside and vibration of a cabinet in which a speaker is mounted to prevent abnormal noise.
To achieve the above objects, the present invention provides a television having a device for preventing vibration of speaker comprising a speaker, an enclosure in which the speaker is fixed on one wall toward a hollow portion formed therein and which an opening for emitting sound is formed on, a vibration plate which faces the speaker to be positioned in the opening at a predetermined interval from the speaker, and a mounting means for mounting the vibration plate on the enclosure.
The speaker can be a woofer which generates a low bandwidth sound. The opening of the enclosure can preferably be connected to a grill formed on a front portion of the television. More preferably, a plane in which the speaker is mounted on is perpendicular with a plane in which the opening is formed thereon. The vibration plate can be quadangular-shaped. The mounting means can comprise a vibration magnet installed on edge of the vibration plate, a supporting magnet for supporting one portion of the vibration magnet, and a supporting bracket for fixing the supporting magnet on the enclosure. The supporting magnet can have a C-shaped sectional plane for containing the vibration magnet. Also, the supporting magnet has polarities facing polarities of the vibration magnet so that a pushing force is activated mutually between the supporting magnet and the vibration magnet. The supporting magnet can be installed at four positions around the vibration plate.
Also, television having a device for preventing vibration of speaker in the present invention comprises a speaker, an enclosure in which the speaker is fixed on one wall toward a hollow portion formed therein and in which an opening for emitting sound and being connected to a grill formed on a front portion of the television is formed on the other wall, a quadrangular-shaped vibration plate which faces the speaker to be positioned in the opening in a predetermined interval from the speaker, and a mounting means for mounting the vibration plate on the enclosure, wherein the mounting means comprises a vibration magnet installed on an edge of the vibration plate, a supporting magnet for supporting one portion of the vibration magnet, and a supporting bracket for fixing the supporting magnet in the enclosure.
Here, the speaker can be a woofer which generates low bandwidth sound. Preferably, a plane which the speaker is mounted on is perpendicular with a plane in which the opening is formed thereon. The supporting magnet can have a C-shaped sectional plane for containing the vibration magnet. The supporting magnet can have polarities facing polarities of the vibration magnet so that a pushing force is activated mutually between the supporting magnet and the vibration magnet. The supporting magnet can be installed at four positions around the vibration plate.
Therefore, vibration of speaker emitting medium/low bandwidth sound outside and vibration of cabinet which speaker is mounted thereon is minimized so that quality of sound becomes high and sound having high power is emitted outside.
REFERENCES:
patent: 4714133 (1987-12-01), Skaggs, Jr.
patent: 5195143 (1993-03-01), Spiegel et al.
patent: 5274709 (1993-12-01), Koizumi
patent: 5452025 (1995-09-01), Koizumi
patent: 5629503 (1997-05-01), Thomasen
patent: 5682021 (1997-10-01), Jeon et al.
patent: 5920637 (1999-07-01), Jeon
patent: 0 392407A2 (1990-10-01), None
patent: 0 392407A3 (1990-10-01), None
patent: 0322514 (1929-12-01), None
WPI Abstract Accession No. 88-136095 & JP 63077297 A (Matsushita), “Vacuum Cabinet with Diaphragm”.
Chan Wing F.
Daewoo Electronics Co. Ltd.
Jacobson Price Holman & Stern PLLC
Ni Suhan
LandOfFree
Television having a device for preventing vibration of speaker does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Television having a device for preventing vibration of speaker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Television having a device for preventing vibration of speaker will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2543042