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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view of a conventional ribbon type
speaker, FIG. 2 is a cross-sectional view, FIG. 3 is a plan view according to this embodiment, FIG.
4 is a cross-sectional view, and FIG. FIG. 7 is a cross-sectional view of the embodiment of FIG. 1
иииииии Ribbon diaphragm, 2 ииииииииииииииииииииииии Magnet, 4 ииииииииииииииииииииииииииииииииииииииииииииии Heat absorption
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement
of ribbon type speakers. As shown in FIG. 1 and FIG. 2, the conventional ribbon type speaker of
the prior art has a static magnetic flux from the magnet 3 as a yoke 4. The ribbon diaphragm 1 is
disposed in the gap through the plate 2 and flows into the gap, and the ribbon diaphragm IK is
orthogonal to the static magnetic flux r4-6 '? F) The voice current is made to flow in the
direction, and the ribbon diaphragm 1 is vibrated thereby to emit a sound wave. However, since
the ribbon diaphragm 1 is thin and has a small area, heat is generated due to the current flowing
through 1?. The resistance value is increased due to the temperature t4I of the resistance
having the ribbon vibration 111o, and the linearity of the sound pressure with respect to the
input is bad, and there is a possibility that the sound may be burnt particularly when the input is
large. The present invention pays attention to such a point, arranges a heat-absorbing plate with
good air permeability on the side surface of the ribbon diaphragm, and dissipates the heat from
the heat-absorbing plate to the magnetic circuit, as described above. In order to solve the
problems and to provide a ninety ribbon type speaker. Hereinafter, the embodiment will be
described with reference to the drawings. In FIG. 3 and #r 4, 5 Fi steel, aluminum = 1? A plurality
of punched holes are made in the heat absorption plate 5 with a heat absorption plate made of
nonmagnetic and heat good conductor such as scissors, so that the sound radiation from the
ribbon diaphragm 1 is not disturbed by the breakage. The heat absorbing plate 5 may be in the
form of a mesh. Further, although it is preferable from the viewpoint of the heat absorption
action that the heat absorption plate 5 be as close as possible to the ribbon diaphragm 1, it is
necessary to separate the heat absorption plate 5 by the vibration width of the ribbon diaphragm
1. Then, the heat absorbing plate 5 is joined to the plate 2 so that the heat conduction is good,
whereby the heat absorbing plate 5 is absorbed and good heat is dissipated in the magnetic
circuit. The reason is that the heat absorption plates 5 are disposed on both sides of the ribbon
diaphragm 1, and according to this, the heat absorption action becomes better. As in the 3-f or
more, in the present invention, a heat absorbing plate which is nonmagnetic and has both heat
conductivity and air permeability is disposed close to at least one surface of the ribbon
diaphragm, and the heat from the heat absorbing plate is applied to the magnetic circuit.
Therefore, even if the ribbon diaphragm generates heat, the heat is absorbed by the heat
absorbing plate, so that the temperature rise of the diaphragm is prevented, and as a result, the
resistance value of the diaphragm is obtained. Does not change significantly, the linearity of the
sound pressure with respect to the input is improved, and the input resistance is also improved.
Furthermore, if a heat absorbing plate is disposed on the front surface of the diaphragm, the
diaphragm also functions as an anti-s I and a barrier member. Furthermore, it can also be used as
a gap for a magnetic circuit.
When the heat absorption plate 5 is made of aluminum material, the heat absorption plate 5 may
form a coating by black anodizing treatment on the surface of the daughter. In this case, the heat
absorption effect is increased and it has insulation properties. Can prevent an accident due to the
contact of the ribbon diaphragm.
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description, jps5469823
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