close

Вход

Забыли?

вход по аккаунту

?

JP2001025080

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
Notice
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
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2001025080
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker device used for a video apparatus such as a display monitor, a television, a personal
computer, etc., and more particularly to a speaker apparatus for video equipment having an
acoustic lens. It is.
[0002]
2. Description of the Related Art Conventionally, an acoustic lens is often attached to a speaker
device. The acoustic lens is mainly used to set the directivity of the speaker device to a desired
direction. And conventionally, many speaker devices having an acoustic lens include a plurality of
fins as the acoustic lens. As such a conventional example, what was described in UnexaminedJapanese-Patent No. 6-35489 is known.
[0003]
FIG. 14 is a perspective view of a television provided with a television speaker apparatus having
an acoustic lens in the above-mentioned prior art. In FIG. 14, the television is provided for the
television case 11, the Braun tube 10 provided on the center front of the television case 11, and
the left and right channels provided on the left and right of the front upper part of the television
case 11 and left and right The speaker unit 12, the center channel speaker unit 13 provided near
10-05-2019
1
the center of the front upper part and the center of the front lower part of the television case 11,
the front of the television case 11 and in front of each speaker unit A plurality of provided
acoustic lens fins 5 are provided.
[0004]
SUMMARY OF THE INVENTION According to the configuration of the speaker apparatus for a
television having an acoustic lens as in the prior art, there are the following problems. First, the
structure of the fins is complicated, which is not preferable in terms of aesthetics. In addition,
when viewed from the television viewer, the respective speaker units provided behind the fins
can be seen well from the gaps of the fins, which is not preferable in terms of aesthetics.
Furthermore, the directivity of the sound is secured only in the direction in which the fins are
facing, which reduces the sense of spread. Moreover, according to the structure which arranges a
speaker only in one of upper and lower sides, sound image localization will be bent.
[0005]
Therefore, it is an object of the present invention to position the sound image closer to the front
center of the screen even when the speakers are arranged only at one of the upper and lower
sides, and the speakers are viewed from the viewer of the video equipment. It is an object of the
present invention to provide a speaker apparatus for video equipment which is difficult to see
directly.
[0006]
SUMMARY OF THE INVENTION The first invention is a speaker apparatus having an acoustic
lens, comprising: a speaker for emitting sound forward; and a radiation in front of the speaker A
speaker baffle provided with a passage opening through which noise passes and an opening
through which the sound passes is formed between the speaker baffle, the center of the surface
facing the speaker being provided facing the speaker And a fin having a cross-sectional shape
that is convex backward, and the sound emitted from the speaker is reflected from the opening to
the outside of the apparatus by being reflected between the fin and the speaker baffle through
the passage opening. It is characterized by being emitted.
[0007]
As described above, according to the first aspect of the present invention, since the speaker is
10-05-2019
2
difficult to directly see when viewed from the viewer of the video apparatus, it is possible to
provide a speaker device which does not impair the appearance.
In addition, since the opening narrows and approaches a point sound source, the directivity can
be made wide.
[0008]
A second aspect of the present invention is the speaker apparatus for video equipment according
to the first aspect of the present invention, wherein the fin does not completely cover and cover
the passage opening portion provided in the speaker baffle as viewed from the front of the video
equipment. It is characterized by the following shape.
[0009]
As described above, according to the second invention, in the first invention, the sound pressure
is not reduced by the fins, and a sufficient volume can be maintained.
In addition, since the opening becomes narrow and approaches the point sound source, the
directivity is broadened.
[0010]
A third aspect of the present invention is the speaker apparatus for video equipment according to
the second aspect, wherein the fin is provided at a position not intersecting the central axis of
radiation of the sound radiated from the speaker. Do.
[0011]
As described above, according to the third invention, in the second invention, part of the sound
radiated from the central portion of the speaker is not blocked by the fins.
Therefore, in particular, the high-pitched sound is output directly from the opening, so that the
sound can be output without changing the high-pitched band characteristic of the speaker.
10-05-2019
3
[0012]
A fourth aspect of the present invention is the speaker apparatus for video equipment according
to the third aspect, wherein the central axis of radiation passes through the opening formed
between the fin and the speaker baffle, and the sound radiated from the speaker is produced. A
portion of the radiation is directly emitted from the opening to the outside of the apparatus.
[0013]
As described above, according to the fourth aspect of the invention, in the third aspect of the
invention, the high-pitched sound emitted from the central portion of the speaker is directly
output from the opening.
Therefore, in particular, the high-pitched sound having a sharp directivity is output without being
affected by the fins, so that the sound can be output without changing the high-pitched band
characteristic of the speaker.
[0014]
A fifth invention is the speaker device for video equipment according to the first invention,
wherein the fins have a rectangular surface shape when viewed from the front of the video
equipment.
[0015]
As described above, according to the fifth aspect of the invention, in the first aspect of the
invention, the fins are rectangular so that the fins can be arranged along each side of the front of
the video equipment.
Therefore, wide directivity can be obtained while maintaining the aesthetic appearance.
[0016]
A sixth aspect of the invention is the speaker apparatus for video equipment according to the
10-05-2019
4
first aspect of the invention, wherein one or more holes are formed in the fin, and part of the
sound emitted from the speaker is It is characterized by being emitted to the outside of the
device through the hole.
[0017]
As described above, according to the sixth aspect of the present invention, in the first aspect, the
holes in the fins allow the sound in the middle to high range, particularly the high range, to be
reproduced sufficiently. It will be.
[0018]
A seventh aspect of the present invention is the speaker device for video equipment according to
the first aspect, wherein the total area of the opening formed between the fin and the speaker
baffle is a passage opening portion provided in the speaker baffle. It is characterized by being
approximately equal to the area of
[0019]
As described above, according to the seventh invention, in the first invention, the total area of the
opening is substantially equal to the area of the passage opening provided behind the speaker
baffle. Acoustic resistance etc. can be made very small.
As a result, the acoustic characteristics and the phase can be stabilized, and in particular, the
acoustic characteristics in the middle to high range can be improved.
[0020]
An eighth aspect of the invention is the speaker apparatus for video equipment according to the
first aspect of the invention, in which the center of the surface of the fin, which is convex to the
rear, is greater than the passage opening part provided in the speaker baffle. Furthermore, it is
characterized in that it is provided close to the speaker.
[0021]
As described above, according to the eighth invention, in the first invention, the acoustic
resistance becomes uniform toward the opening, the characteristics and the phase become
stable, the opening becomes narrow, and the point sound source becomes The directivity spreads
10-05-2019
5
to
[0022]
A ninth aspect of the present invention is the speaker device for video equipment according to
the first aspect of the present invention, characterized in that it is provided at the upper front
and / or the lower front of the video equipment.
[0023]
As described above, according to the ninth aspect of the present invention, in the first aspect, it is
possible to obtain wide directivity in the upper and lower direction even when the upper and
lower or both are provided with the speaker. .
[0024]
A tenth invention is a speaker apparatus for video equipment according to the first invention,
characterized in that it is provided on the front left and right of the video equipment.
[0025]
As described above, according to the tenth invention, in the first invention, when speakers are
provided on the front right and left sides of the video equipment, it is possible to obtain wide
directivity in the left and right direction.
[0026]
An eleventh aspect of the present invention is the speaker device for video equipment according
to the first aspect of the present invention, characterized in that it is provided on the upper front
and / or lower front of the video equipment and on the front left and right of the video
equipment.
[0027]
As described above, according to the eleventh aspect of the present invention, in the first aspect,
the sound image can be easily localized near the front center of the screen even in the case
where one of the upper and lower speakers is provided. .
10-05-2019
6
Further, since the spread of directivity in the lateral direction can be obtained by the speakers
provided on the left and right of the front of the video equipment, it is possible to improve the
sense of the spread of the sound felt by the viewer.
[0028]
A twelfth aspect of the present invention is the speaker device for video equipment according to
the eleventh aspect of the present invention, wherein the speaker devices provided on the front
left and right of the video equipment are used exclusively for the high frequency range.
[0029]
As described above, according to the twelfth aspect of the present invention, in the eleventh
aspect, the sound image can be easily localized near the front center of the screen at low cost
even when the upper or lower speaker is provided. be able to.
In addition, the speakers provided on the front and right of the front of the video equipment can
obtain the spread of the directivity in the lateral direction in the high tone range, so that the
sense of the spread of the sound felt by the viewer can be improved.
[0030]
According to a thirteenth aspect of the present invention, there is provided an imaging device
housing for accommodating a video device circuit set, a first speaker device provided on the front
upper portion and / or the front lower portion of the imaging device housing, and the imaging
device housing. A video apparatus provided with a second speaker device provided on the front
left and right of the body and used exclusively for high-pitched sound, the first speaker device
being a speaker for emitting sound forward, and a speaker in front of the speaker Is provided
opposite to the speaker so as to form an opening through which the sound passes between the
speaker baffle provided with the passage opening through which the emitted sound passes and
the speaker baffle And a sound emitted from the speaker is reflected between the fin and the
speaker baffle through the passage opening. , Characterized in that it is radiated from the
opening portion to the outside of the apparatus.
[0031]
10-05-2019
7
As described above, according to the thirteenth aspect of the present invention, the side surface
of the video equipment housing can be made more compact than in the configuration in which
the speaker device having fins also on the side surfaces is provided.
Further, even in the case where one of the upper and lower speakers is provided, the sound
image can be easily localized near the center in front of the screen at low cost.
Furthermore, since the spread of directivity in the lateral direction can be obtained by the
speakers provided on the left and right of the front of the video equipment, it is possible to
improve the sense of the spread of the sound felt by the viewer.
[0032]
DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment FIG. 1 is a perspective
view showing the appearance of a television including a speaker device according to a first
embodiment of the present invention.
In FIG. 1, the television is provided on the television casing 11, the cathode-ray tube 10 provided
near the front center of the television casing 11, and the left and right of the front upper part of
the television casing 11 and the left and right of the front lower part. A speaker device 1 is
provided near the center of the upper front of the television case 11 and near the center of the
lower front.
[0033]
In the present invention, the speaker device 1 does not necessarily have to be provided on the
top front and the bottom front of the television case 11, but may be provided on only one of
them.
Also, these speakers may be provided on the front left and right of the television case 11.
Therefore, the installation position is not particularly limited.
10-05-2019
8
In addition, although a television is described as an example in the following embodiments, a
video apparatus other than a television, for example, a display monitor, a personal computer or
the like may be used.
[0034]
FIG. 2 is a schematic view of a cross section of the speaker device according to the first
embodiment of the present invention as seen from the side direction.
[0035]
In FIG. 2, a speaker device 1 according to a first embodiment of the present invention includes a
speaker 2, a sound conduit 3 located in front of the speaker 2 for transmitting sound to the
outside of the device, and an outer side of the sound conduit 3. The speaker baffle 4 is provided
around the end of the speaker and formed to reflect sound to the outside, the fin 5 provided on
the front surface of the speaker baffle 4, and the gap between the speaker baffle 4 and the fin 5
A sound guiding space 6 and an opening 7 opened from the sound guiding space 6 to the outside
of the device are provided.
[0036]
In the present invention, the above-described sound conduit 3 is not necessarily a necessary
component.
Therefore, the sound conduit 3 may be omitted, and the speaker 2 may be provided immediately
behind the speaker baffle 4.
[0037]
FIG. 3 is a partial view of the speaker apparatus according to the first embodiment of the present
invention as viewed from the front.
Also in FIG. 3, the configuration of the speaker device 1 is the same.
10-05-2019
9
[0038]
As shown in FIGS. 2 and 3, the speaker device 1 according to the first embodiment of the present
invention has the shape of the speaker baffle 4 and the fins 5, and the sound conducting space 6
and the opening formed by these. It has a feature of the part 7.
[0039]
First, as shown in FIG. 2, the fin 5 in the speaker device 1 according to the first embodiment of
the present invention is located on the front surface of the speaker baffle 4 so as to face the
surface formed by the speaker 2 , And so as to be approximately parallel.
The surface of the fin 5 opposed to the speaker 2 has a convex shape in which the central
portion is more rearward than the end portion of the fin 5 in the vertical direction so as to be
closer to the speaker 2.
[0040]
The cross section of the fin 5 as viewed from the side of the television typically has a thin shape
at the upper and lower ends and a thick shape near the center.
However, since it is sufficient if only the rear surface of the fin 5 facing the speaker has the
above-mentioned shape, the shape of the front surface does not matter.
[0041]
Therefore, the fins 5 may be formed in a concave shape whose front surface corresponds to the
convex shape of the rear surface so as to curve a plate having substantially the same thickness.
Further, regardless of the shape of the rear surface of the fin 5, the shape of the front surface
may be a flat surface parallel to the plane on which the Braun tube 10 is provided.
10-05-2019
10
[0042]
Further, as shown in FIG. 1 and FIG. 3, the shape of the fins 5 viewed from the front is typically
rectangular, but may be oval or circular, and the shape is not particularly limited. .
Therefore, for example, the fins 5 may be in the form of a disk having a convex shape in which
the central portion bulges rearward from the periphery thereof.
[0043]
The central portion of the fin 5 in the speaker device 1 according to the first embodiment of the
present invention is located forward of the central portion of the corresponding speaker baffle 4.
Thus, by installing the fins 5, the sound emitted from the speaker 2 is reflected to the surface of
the fins 5 having a convex shape toward the rear. Then, some of the reflected sound is further
reflected by the speaker baffle 4 and emitted from the opening 7 to the outside of the device.
[0044]
Further, in FIG. 2, a sound conducting space 6 is formed between the fin 5 and the speaker baffle
4, and an opening 7 opened from the sound conducting space 6 to the outside of the apparatus is
provided. The length of the fins 5 in the vertical direction is slightly smaller than the diameter of
the outlet of the sound conduit 3.
[0045]
Then, as shown in FIG. 4, the opening 7 is formed narrow, and the sound source is close to a
point sound source. FIG. 4 is a schematic view showing the radiation direction of sound in the
vertical direction of the speaker device according to the first embodiment of the present
invention. And the point sound source can take directivity most widely. Therefore, with the
10-05-2019
11
configuration as described above, it is possible to widen the directivity in the speaker device
according to the present embodiment.
[0046]
Of course, even if the vertical length of the fin 5 is the same as or slightly longer than the
diameter of the outlet of the sound conduit 3, the fin 5 and the speaker baffle 4 are spaced by a
certain amount. Thus, the opening 7 can be formed. Therefore, the length in the vertical direction
of the fins 5 does not matter. However, when the length in the vertical direction of the fin 5 is
equal to or less than the diameter of the outlet of the sound conduit 3, the total reflection by the
fin 5 is small, and the acoustic resistance and the acoustic mass that affect the sound in the high
range become small. Therefore, in such a case, the sound in the high range is sufficiently
reproduced, which is preferable.
[0047]
Next, the above-mentioned fin 5 may be shaped to have one or more holes penetrating the
surface. In the fins 5, the positions at which the holes are made and the sizes of the holes are not
particularly limited, but an arrangement and a size that does not impair the appearance are
desired. By opening the holes in the fins 5 in this manner, particularly high-pitched sound can be
reproduced sufficiently. This is because the holes formed in the fins 5 reduce the reflection by
the fins 5, and in particular, it is possible to reduce the acoustic resistance and the acoustic mass
that affect the sound in the high range.
[0048]
However, when the opening area of the hole is too large, the directivity becomes narrow.
Therefore, it is preferable that the aperture area of the hole be such that the sound in the high
range can be sufficiently reproduced while wide directivity is taken.
[0049]
Second Embodiment FIG. 5 is a schematic view showing a cross section of a speaker apparatus
10-05-2019
12
according to a second embodiment of the present invention. FIG. 6 is a partial view of the
speaker device as viewed from the front. Since the function of the component is the same as that
of FIG. 2, it attaches the same number as FIG. 2, omits explanation, and explains only a different
point from FIG. 2 below.
[0050]
In FIG. 5, the position of the fin 5 is at a position not intersecting the central axis of radiation of
the sound radiated from the speaker 2. And since the radiation central axis of the sound radiated
from the speaker 2 passes through the opening 7, the sound radiated on the radiation central
axis is directly radiated to the outside of the apparatus. Then, as shown in FIG. 6, when the
viewer views the speaker device 1 having the above configuration from the front, the dust cap 8
formed at the center of the diaphragm of the speaker 2 can be confirmed from the opening 7
become.
[0051]
As described above, the high-pitched sound emitted from the central portion of the speaker 2 is
emitted directly from the opening 7 to the outside of the apparatus. As a result, the sound can be
output without changing the high range characteristic of the speaker.
[0052]
Third Embodiment FIG. 7 is a schematic view showing a speaker apparatus according to a third
embodiment of the present invention. Since the function of the component is the same as that of
FIG. 2, it attaches the same number as FIG. 2, omits explanation, and explains only a different
point from FIG. 2 below.
[0053]
In FIG. 7, the area of the passage opening located behind the speaker baffle 4, that is, the area of
the outlet of the sound conduit 3 and the total area of the opening 7 are approximately equal.
The fins 5 are provided at substantially equal intervals to the speaker baffle 4.
10-05-2019
13
[0054]
With such a configuration, the acoustic resistance is substantially uniform in the two openings 7
formed above and below the fin 5, and the acoustic characteristics and the phase can be
stabilized.
Further, the opening 7 is formed to be narrow and approaches a point sound source, so that the
directivity can be expanded.
[0055]
As described above, the fins 5 are arranged so that the area of the passage opening located
behind the speaker baffle 4, that is, the area of the outlet of the sound conduit 3 and the total
area of the opening 7 are substantially equal. And the speaker baffle 4 are spaced apart from
each other most effectively exert the above-mentioned effect. And the graph showing the result
of having measured the effect is FIG. 8 and FIG. Hereinafter, the results of FIGS. 8 and 9 and the
reason why the results are obtained will be discussed.
[0056]
FIGS. 8 and 9 are graphs showing the results of measurement of how the acoustic characteristics
of the speaker apparatus change when the distance between the fins 5 and the speaker baffle 4 is
changed. In the speaker apparatus used for the measurement, the opening diameter of the sound
conduit is 44 mm, the length of the sound conduit is 270 mm, and the volume of the sound
conduit is 0.3 liter.
[0057]
In FIG. 8 (a), the distance between the fins 5 and the speaker baffle 4 is 0 mm, and in FIG. 8 (b),
the distance is 5 mm. Further, in FIG. 9A, the distance is 10 mm, and in FIG. 9B, the distance is 15
mm. 8 and 9 are graphs in which the acoustic characteristics of the speaker device are examined
with the above-mentioned intervals, and the ordinate represents sound pressure (unit: dB) and
the abscissa represents frequency (unit: Hz). It is.
10-05-2019
14
[0058]
In these graphs, the measured values are shown by bar graphs containing horizontal lines. The
blank bar graph described in a slightly larger size indicates the value measured with the fin 5
removed. This is described so that the degree to which the acoustic characteristics are degraded
can be easily compared.
[0059]
As shown in FIG. 8A, when the distance between the fins 5 and the speaker baffle 4 is set to 0
mm, the deterioration of the acoustic characteristics in the middle to high range, particularly the
high range is remarkable. The cause of this deterioration can be considered as follows. That is,
when the opening of the sound conduit is directly closed, the sound conduit becomes a closed
tube. As a result, the sound conduit becomes a speaker box with volume. For this reason, the
opening of the sound conduit is a low pass filter which is difficult to pass middle to high range
sound, similar to the bass reflex port of the speaker box. The above is considered to be the cause
of deterioration of the acoustic characteristics.
[0060]
Then, as shown in FIG. 8 (b), when the distance is 5 mm, the acoustic characteristics in the
middle to high range are improved. The cause of this improvement is considered as follows. That
is, the fin 5 is provided at a position floating from the opening of the sound conduit without
closing the opening of the sound conduit with the fin 5. This can reduce the acoustic resistance
and the acoustic mass. And reducing the acoustic resistance etc. weakens the effect of the low
pass filter. The above is considered to be the cause of the improvement of the acoustic
characteristics.
[0061]
Also, as shown in FIG. 9 (a), when the distance is 10 mm, the acoustic characteristics are
considerably improved. This is because the area of the outlet of the sound conduit 3, that is, the
10-05-2019
15
area of the passage for sound located behind the speaker baffle 4, is substantially equal to the
total area of the opening 7, and the viscosity resistance of air is further increased. This is
considered to be due to the fact that the acoustic characteristics in the middle to high range are
improved due to the influence of and
[0062]
However, as shown in FIG. 9 (b), if the distance is 15 mm, the acoustic characteristics will be
slightly deteriorated. Here, if the opening area is further increased, the characteristics should not
be degraded. Nevertheless, the cause of deterioration is considered to be that the directivity is
too narrow because the opening 7 is too wide.
[0063]
That is, as described above, if the opening 7 is formed to be narrow, it becomes close to a point
sound source, and it is possible to widen the directivity. However, if the opening 7 is formed
wide, the directivity becomes narrow. And, outside the narrow directivity range, it is considered
that the acoustic characteristics deteriorate.
[0064]
From the above, if the distance between the fin 5 and the speaker baffle 4 is about 10 mm, the
area of the sound passage opening located behind the speaker baffle 4 and the total area of the
opening 7 It becomes almost equal. As described above, if the area of the sound passage opening
located behind the speaker baffle 4 and the total area of the opening 7 are substantially equal,
the influence by the viscous drag of air is reduced while the directivity is wide. Since the acoustic
characteristics can be improved, the best acoustic characteristics can be obtained.
[0065]
In FIG. 7, the shape of the fins 5 is illustrated as substantially similar to that of FIG. However, the
shape of the fins 5 may be the same as that of the following FIG. 10 or may be another shape,
and is not particularly limited. Also, the position of the fins 5 may be the same as in FIG. 2 and is
10-05-2019
16
not particularly limited.
[0066]
Fourth Embodiment FIG. 10 is a schematic view showing a speaker apparatus according to a
fourth embodiment of the present invention. Since the function of the component is the same as
that of FIG. 2, the same reference numerals as those of FIG.
[0067]
FIGS. 10 (a) and 10 (b) are schematic views showing the cross section of the speaker device 1 as
seen from the side direction of the television. In FIG. 10A, the surface of the fin 5 facing the
speaker 2 has a convex shape that bulges backward such that the center portion is closer to the
speaker 2 than the end portion in the vertical direction of the fin 5 Have. The rear central portion
of the fin 5 is located further rearward than the rear central portion of the corresponding
speaker baffle 4 and reaches the inside of the sound conduit 3. And the cross section of the fin 5
seen from the side direction of a television has a hemispherical shape, as FIG. 10 (a) shows.
[0068]
Also in FIG. 10 (b), in the speaker device, substantially in the same manner as in FIG. 10 (a), the
surface of the fin 5 facing the speaker 2 is more central than the end of the fin 5 in the vertical
direction. It has a convex shape that bulges backward so that the part is closer to the speaker 2.
However, it is different in that the cross section of the fin 5 viewed from the side direction of the
television has a triangular shape.
[0069]
According to the above construction, the acoustic resistance generated by the viscosity of the air
becomes uniform toward the upper and lower two openings 7. Then, the acoustic characteristics
of the speaker device 1 and the phase of the sound to be emitted are stabilized.
10-05-2019
17
[0070]
That is, as described above, if the acoustic resistance received by the viscous resistance of air is
small, the acoustic characteristics are improved. And the acoustic resistance becomes large, so
that the angle of the surface of fin 5 which reflects sound becomes near perpendicular to the
radiation direction of sound. Therefore, the surface shape of the fins 5 is devised so that the
central portions of the fins 5 are located rearward of the central portions of the corresponding
speaker baffles 4 and reach the inside of the sound conduit 3. Then, the angle formed by the
surface of the fin 5 with respect to the direction of the sound radiated from the speaker 2 is
reduced. Therefore, the acoustic resistance is reduced, and the acoustic characteristics of the
speaker device 1 are improved.
[0071]
Furthermore, according to the above configuration, the opening 7 narrows and approaches the
point sound source. Therefore, the directivity is broadened as in the speaker device according to
the first embodiment of the present invention.
[0072]
Fifth Embodiment FIG. 11 is a view showing the configuration of a speaker device according to a
fifth embodiment of the present invention, and the configuration of a television including the
speaker device. Since the function of the component is the same as that of FIG. 1, the same
reference numerals as those of FIG. 1 are given and the description thereof is omitted, and only
the points different from FIG. 1 will be described below. However, the television is different in
that it further includes the high-range speaker 14.
[0073]
In FIG. 11, the high-range speakers 14 are provided on the left and right of the front surface of
the television case 11, and fins 5 are provided on the front surface. According to such a
configuration, since it is not necessary to use an expensive speaker device having good
characteristics in the entire sound range, the cost of the entire speaker device can be reduced. In
addition, even when a speaker device is provided on one of the upper and lower front sides of the
10-05-2019
18
television case 11, the sound image can be localized near the center of the screen.
[0074]
Further, by providing the high-range speakers 14 on the left and right sides of the front of the
television, it is possible to obtain the spread of the horizontal directivity in the high range.
Therefore, it is possible to improve the spread of the sound felt by the viewer.
[0075]
However, the high range speaker 14 may be used exclusively for the high range, or may be used
for the middle and high range, in particular the high range. Further, the high frequency range
speaker 14 may be a speaker device whose range is not limited as the speaker device 1 is. In
such a case, since the spread of the directivity in the lateral direction in the entire sound range
can be obtained, it is possible to improve the spread feeling of the sound felt by the viewer.
[0076]
FIG. 12 is a schematic view showing the radiation direction of sound in the vertical direction of
the speaker device 1 and the high frequency range speaker 14. As shown in FIG. 12, for example,
even in the case where the speaker device 1 is provided at the lower part of the front of the
television case 11, the sound image can be localized near the center of the screen.
[0077]
Sixth Embodiment FIG. 13 is a view showing the configuration of a speaker device according to a
sixth embodiment of the present invention and the configuration of a television including the
speaker device. Since the function of the component is the same as that of FIG. 11, the same
reference numerals as those of FIG. 11 are given and the description thereof is omitted, and only
the points different from FIG. 11 will be described below. However, the television including the
speaker device according to the present embodiment is different in that the fin 5 is not attached
in front of the high frequency range speaker 14.
10-05-2019
19
[0078]
FIG. 13 is a view showing a structure in which the opening 7 corresponding to the high-range
speaker 14 is provided on the front left, right, and left and right sides of the television case 11.
As shown in FIG. 13, high-range speakers 14 are provided on the left and right of the television
case 11. Further, the opening 7 corresponding to the high-pitched area speaker 14 is provided
on one or both of the front left and right and the left and right sides of the television case 11. As
a result, the opening 7 can be made compact, so the side width of the television case can be
reduced.
[0079]
Further, as in the case of FIG. 11, by providing the high-range speakers 14 on the left and right
sides of the front of the television, it is possible to obtain the spread of the horizontal directivity
in the high range. Therefore, it is possible to improve the spread of the sound felt by the viewer.
[0080]
In each of the above embodiments, the television has been described as an example. However, it
goes without saying that the speaker device according to each of the above embodiments may be
used for video equipment other than a television, for example, a display monitor, a personal
computer and the like.
[0081]
Brief description of the drawings
[0082]
1 is a perspective view showing the configuration of a television including the speaker device
according to the first embodiment of the present invention.
[0083]
2 is a cross-sectional view of the structure of the sound radiation axis and the opening in the
10-05-2019
20
speaker device according to the first embodiment of the present invention as viewed from the
side direction.
[0084]
3 is a partial view of the structure of the sound radiation axis and the opening in the speaker
device according to the first embodiment of the present invention as viewed from the front.
[0085]
4 is a schematic view showing the radiation direction of sound in the vertical direction of the
speaker device according to the first embodiment of the present invention.
[0086]
5 is a cross-sectional view of the structure of the radiation axis and the opening of the sound in
the side view in the speaker apparatus according to the second embodiment of the present
invention.
[0087]
6 is a partial view of the structure of the sound radiation axis and the opening in the speaker
apparatus according to the second embodiment of the present invention as viewed from the
front.
[0088]
7 is a schematic view showing the structure of the positional relationship between the fins and
the baffles in the speaker device according to the third embodiment of the present invention.
[0089]
8 is a graph showing the relationship between the positional relationship between the fins and
the baffles and the acoustic characteristics in the speaker device according to the third
embodiment of the present invention.
[0090]
FIG. 9 is a graph showing the relationship between the positional relationship between fins and
baffles and the acoustic characteristics in the speaker device according to the third embodiment
of the present invention.
10-05-2019
21
[0091]
10 is a schematic view showing the shape of the fin in the speaker device according to the fourth
embodiment of the present invention.
[0092]
FIG. 11 is a perspective view of the television showing the structure of the opening in the speaker
device according to the fifth embodiment of the present invention.
[0093]
12 is a schematic view showing the radiation direction of sound in the vertical direction of the
speaker device and the high frequency range speaker in the speaker device according to the fifth
embodiment of the present invention.
[0094]
13 is a perspective view of a television showing the structure of the opening in the speaker
device according to the sixth embodiment of the present invention. FIG.
[0095]
14 is a perspective view showing the structure of a conventional television receiver provided
with a television speaker apparatus having an acoustic lens.
[0096]
Explanation of sign
[0097]
Reference Signs List 1 speaker device 2 speaker 3 sound conduit 4 speaker baffle 5 fin 6 sound
conducting space 7 opening 8 dust cap 10 cathode ray tube 11 television housing 12 left and
right channel speaker 13 center channel speaker 14 high-range speaker
10-05-2019
22
Документ
Категория
Без категории
Просмотров
0
Размер файла
33 Кб
Теги
jp2001025080
1/--страниц
Пожаловаться на содержимое документа