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JP2008167006

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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
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2008167006
An image display apparatus incorporating a thin display panel is configured such that a good
speaker arrangement can be made by utilizing the thinness of the display panel. An image display
apparatus includes an image display panel. As the housing, a base portion 110 mountable in a
horizontal plane, a rising portion 120 rising in a state of being inclined toward the front side with
a predetermined angle from the base portion, and an upper portion of the rising portion are
connected to the image display panel And a panel holding unit 130 for holding the The speakers
161 to 164 are disposed on the upper surface of the base portion 110 of the housing with the
sound output surface facing upward, and the sound AU output from this speaker is reflected at
the rising portion 120 and emitted toward the front side. Let's do it. [Selected figure] Figure 1
Image display device
[0001]
The present invention relates to an image display apparatus suitable for being applied to a
television receiver, a display for a computer, and the like.
[0002]
2. Description of the Related Art Conventionally, various types of casings exist as casings
constituting television receivers.
In particular, in recent years, various television receivers using thin display panels such as liquid
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crystal display panels have become widespread, and are being made thinner than television
receivers using conventional cathode ray tubes.
[0003]
FIG. 8 is a view showing an example of a display device using a conventional liquid crystal
display panel. The display device of FIG. 8 is an example of a laptop personal computer device.
The personal computer device 10 has a configuration in which the first housing 11 and the
second housing 12 are connected in an openable / closable manner. A keyboard or the like is
disposed on the first housing 11 side, and a liquid crystal display panel 13 is disposed on the
second housing 12 side. Also, two speakers 15 are disposed at the top of the first housing 11.
[0004]
As shown in FIG. 8, the reason why the speaker 15 is disposed on the side of the first casing 11 is
that the first casing 11 is more than the second casing 12 in which the display panel 13 is
disposed. This is because there is room in the installation space. The second housing 12 is
relatively thin and not suitable for arranging a speaker, and it is difficult to install the speaker
also from the point of arranging a relatively large display panel.
[0005]
Patent Document 1 discloses an example of a display device of this type. Unexamined-JapanesePatent No. 2002-281576 (FIG. 4)
[0006]
However, in this type of display device, when the speaker is disposed with the top facing as
shown in FIG. 8, the sound output from the speaker is directed upward as shown by the arrow in
FIG. There is a problem that the user who is looking at the image displayed in is not in a state in
which direct sound is directed, and the sound quality is poor. In particular, since the speaker unit
mounted on this type of display device is a small-sized speaker unit, it is not preferable that
sound is emitted in a direction different from the direction in which the user faces as shown in
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FIG. was there.
[0007]
The present invention has been made in view of the foregoing, and it is an object of the present
invention to provide a novel configuration that can satisfactorily attach a speaker to this type of
display device.
[0008]
The present invention is configured as an image display apparatus provided with an image
display panel.
The housing is connected to a base portion mountable in a horizontal plane, a rising portion
rising in a state of being inclined toward the front side with a predetermined angle from the base
portion, and an upper portion of the rising portion to hold the image display panel And a panel
holder. A speaker is disposed on the upper surface of the base portion of the housing with the
sound output surface facing upward, and the sound output from the speaker is reflected at the
rising portion.
[0009]
With such a configuration, the sound output from the speaker disposed at the base portion of the
housing is reflected by the inclined rising portion provided at the lower portion of the display
panel and is emitted to the front side. Sound comes to be output to the near side. Therefore, for
the user who is at a position where the image displayed on the image display panel is viewed
from the front, the sound is emitted from the image display panel side, and the sound output
state becomes preferable.
[0010]
According to the present invention, the sound is emitted from the image display panel side while
the speaker is disposed on the base portion. Therefore, as a configuration in which the speaker is
disposed in the base portion having a relatively large installation space, the acoustic
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characteristic is in a good state even with the configuration in which the speaker is not provided
for the holding portion of the display panel and the rising portion below it. Thus, it can be
suitably configured as a thin casing that makes use of the thinness of the image display panel.
[0011]
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1
to 7.
[0012]
FIG. 1 is a perspective view of the television receiver 100 according to the present embodiment
as viewed from the front side, FIG. 2 is a perspective view of the television receiver 100 as
viewed from the back side, and FIG. is there.
As shown in FIG. 1, the television receiver 100 has a base portion 110 and a rising portion 120
rising from the back of the base portion 110 at a predetermined angle, as a casing constituting
the main body of the television receiver. A panel holder 130 is connected to the upper end of the
rising portion 120. The panel holding unit 130 has a frame portion 131, in which the image
display area of the display panel 150 is disposed. In the present embodiment, the image display
panel 150 uses an organic electro luminescence (EL) panel. The organic EL panel is a panel for
displaying an image by arranging light emitters formed of organic substances in a matrix, and
since the light emitters formed on the panel emit light, a backlight is not necessary. In the
present embodiment, the screen has a screen size with a diagonal length of about 13 inches.
[0013]
The base portion 110 and the rising portion 120 are configured to have a width equal to the
lateral width of the panel holding portion 130. An angle θ1 (FIG. 3) formed by the base portion
110 and the rising portion 120 is an angle of about 45 °. As shown in FIG. 3, the panel holding
portion 130 connected to the upper portion of the rising portion 120 is inclined slightly
rearward than the upright state. The base portion 110, the rising portion 120 and the panel
holding portion 130 are respectively made of a metal plate such as a stainless steel plate or an
aluminum plate.
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[0014]
The base portion 110 is configured on a flat plate so that it can be placed on a horizontal surface
such as a table top, and as shown in FIG. 1, a base portion cover 140 is disposed on the upper
surface. The base cover 140 is also made of metal. At the rear of the top surface of the base
portion 110, four speaker units 161, 162, 163, and 164 are disposed. This arrangement position
is the upper surface of the base portion 110 near the connection point between the base portion
110 and the rising portion 120. Each of the speaker units 161, 162, 163, and 164 is housed in
two speaker boxes 160L and 160R (FIG. 4) as described later. Each of the speaker units 161,
162, 163, and 164 uses relatively thin speaker units of the same size, and the speakers are
disposed with the sound output surface of each speaker unit facing up, and The output surface is
arranged horizontally in a horizontal row behind the base cover 140 which is the upper surface
of the base 110.
[0015]
By arranging the speaker units 161, 162, 163, and 164 in this manner, the output state AU of
the sound from each of the speaker units 161 to 164 is as shown by dashed arrows in FIG. 1 and
FIG. It goes straight on from the units 161 to 164, hits the inner wall 121 of the inclined rising
portion 120, and turns to the near side. Therefore, on the side of the user who is viewing the
display on the display panel 150, the sound from the speaker units 161 to 164 travels in a
direction substantially opposite to the direction in which the display panel 150 is viewed.
[0016]
An infrared receiving window 111 is disposed at the front end of the base portion 110. Inside the
infrared receiving window 111, a light receiving element 113 (FIG. 6) for receiving a remote
control signal (infrared signal) from the remote control device is disposed.
[0017]
As shown on the back side in FIG. 2, in the television receiver 100 of the present embodiment, a
back cover 170 is attached to the rear of the rising portion 120 and the panel holding portion
130. In the back cover 170, the cover portion 171 of the panel holding portion 130 and the
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cover portion 172 of the rising portion 120 are integrally formed. The back cover 170 is also
made of metal.
[0018]
As shown in FIG. 2, a terminal cover 180 is attached at the center of the rear end of the base
portion 110, and the terminals required by the television receiver 100 are attached at the
arrangement position of the terminal cover 180. is there. That is, the power supply input
terminal 181, the F terminal 182, the HDMI terminal 183, and the LAN terminal 184 are
disposed. However, these terminals 181 to 184 are attached to the side of a substrate to be
described later, and the terminal cover 180 only covers the periphery of the electronic
components constituting each terminal. Ventilation holes 114 are provided on the left and right
sides of the rear end of the base portion 110, and the heat dissipation processing can be
performed by the action of a fan described later.
[0019]
Next, the state in which each member is disposed in the housing constituting the television
receiver 100 will be described with reference to FIG. FIG. 4 is a view showing the inside of the
base portion 110 by removing the base portion cover 140 from the base portion 110. As shown
in FIG. 4, the circuit board 210 is disposed at the center of the base portion 110, and the shield
plate 220 is disposed on the circuit board 210. The circuit board 210 is disposed substantially
horizontally in the base portion 110. A heat pipe 221 for cooling is attached to the shield plate
220 of this example. In addition, speaker boxes 160L and 160R are disposed on the left and right
of the base portion 110, respectively. Two speaker units 161 and 162 are attached to each
speaker box 160L, and are configured to reproduce audio of the left channel. Two speaker units
163 and 164 are attached to the speaker box 160R, and are configured to reproduce audio of the
right channel. The four speaker units 161 to 164 all use the same size and the same
characteristics here.
[0020]
As shown in FIG. 4, the fan 185 is disposed in front of the right channel speaker box 160R, and
the two speaker boxes 160L and 160R have different shapes to avoid the arrangement position
of the fan 185. . However, although the shapes are different, the volumes of the two speaker
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boxes 160L and 160R are substantially the same, and the acoustic characteristics are made equal
in the left and right channels. Through holes 142, 143, 144, and 145 are provided in the base
portion cover 140 corresponding to the arrangement positions of the speaker units 161 to 164.
The speaker through holes 142 to 145 are provided in the recessed portion 141 on the rear side
of the base cover 140.
[0021]
The fan 185 cools the circuit components on the circuit board 210 to generate heat in operation,
and performs the cooling process using the vent holes 114 shown in FIG. At that time, one end of
the heat pipe 221 is disposed in the vicinity of a portion where there is a vent for cooling, so that
the cooling effect of the circuit board 210 is enhanced. Although the vent holes 114 shown in
FIG. 2 are provided at two positions, right and left of the rear end of the base portion 110, one
vent hole 114 serves as an inlet for cooling air, and the other vent hole 114 is cooled. The fan
185 is used to generate an air flow so as to pass through the arrangement position of the circuit
board 210 and the shield plate 220 by using it as an exhaust port for the air supply.
[0022]
FIG. 5 shows a state in which the back cover 170 and the terminal cover 180 are removed from
the rear of the television receiver 100 shown in FIG. The circuit board 210 is disposed in the
center of the rear of the base 110 in a slightly protruding state, and on the rear end of the circuit
board 210, each terminal (power input terminal 181, F terminal 182, Parts constituting the
HDMI terminal 183 and the LAN terminal 184 are attached. And, as shown in FIG. 5, through
holes 180a, 180b, 180c and 180d corresponding to the arrangement positions of the terminals
are arranged in the terminal cover 180, and by connecting the terminal cover 180 to the
housing, As shown in FIG. 2, the respective terminals are arranged.
[0023]
An example of a circuit configured on the circuit board 210 on which these terminals are
arranged will be described later with reference to FIG. 7, but basically, reception processing of an
input broadcast signal and an image signal obtained by the reception processing Alternatively, an
image signal (video signal) input from the outside is processed for display, and audio signal
processing is also performed. The display image signal processed by the circuit board 210 is
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supplied to the drive circuit board 230 disposed in the rising portion 120. In order to supply this
image signal to the drive circuit board 230, a connector 212 at the end of the signal line 211
drawn from the circuit board 210 is connected to a terminal (not shown) on the lower end side of
the drive circuit board 230. As.
[0024]
The drive circuit board 230 is sized to cover substantially the entire surface of the rising portion
120, as shown in FIG. The circuit assembled on the drive circuit substrate 230 is configured to
generate a drive signal for driving each pixel in the display panel 150. The drive circuit substrate
230 is configured as a circuit substrate having a width substantially equal to the width of the
display panel 150. The drive signals generated in the drive circuit substrate 230 are sent to the
display panel 150 using a plurality of flexible substrates 231, 232, 233 and 234. In this example,
drive signals are sent in a horizontal row at the upper end of the display panel 150, and the
upper ends of the four flexible substrates 231 to 234 are connected to most of the upper end of
the display panel 150.
[0025]
FIG. 6 is an exploded view of the components described above. An element to be a light emitting
element is formed on a glass substrate, and an end portion of four flexible substrates 231 to 234
is connected to the upper end of the surface of the display panel 150 as an organic EL panel
from the back side. The drive signal is supplied from the drive circuit board 230 side. In the base
portion 110, the light receiving element 113 attached to the small substrate 112 is attached to
the rear side of the infrared receiving window 111 (FIG. 1). A light guiding member formed of a
transparent resin member or the like is disposed between the light receiving element 113 and
the infrared light receiving window 111, and light incident from the infrared light receiving
window 111 efficiently enters the light receiving element 113. It is as composition. The light
receiving element 113 is electrically connected to the circuit board 210, determines the code of
the remote control signal received by the control unit 212 described later, and performs
predetermined control.
[0026]
FIG. 7 is a view showing a configuration example of a circuit assembled on the circuit board 210
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and the drive circuit board 230 of this embodiment. Hereinafter, the circuit configuration will be
described. A tuner 211 is connected to an F terminal 182 to which an antenna wire or the like is
connected, and the tuner 211 receives a broadcast signal obtained at the F terminal 182. The
reception channel is set under the control of the control unit 212. The image signal received and
obtained by the tuner 211 is sent to the data processing unit 214, subjected to various data
processing, and then sent to the image processing unit 215. The signal received by the network
terminal 184 is sent to the interface unit 213, the received control signal is sent to the control
unit 212, and the received image signal is sent to the data processing unit 214, and then image
processing is performed. It is sent to the part 215.
[0027]
The image processing unit 215 performs various types of image processing necessary for
display. The image signal subjected to image processing in the image processing unit 215 is sent
to the drive circuit board 230, and the panel control unit 231 in the drive circuit board 230
generates a signal for driving each pixel of the display panel 150. The drive signal is sent to the
display panel 150.
[0028]
Further, an image signal obtained at the HDMI terminal 183 is directly sent to the image
processing unit 215, and the image processing unit 215 sends an audio signal superimposed on
the image signal to the audio processing unit 216. An audio signal obtained by the data
processing unit 214 via the tuner 211 or the like is also sent to the audio processing unit 216.
The audio processing unit 216 performs conversion to an analog audio signal, etc., and the audio
signal of the left channel and the audio signal of the right channel are separately amplified by the
amplifiers 217 and 218, respectively, and are output from the speaker units 161 to 164. Make it
output.
[0029]
A DC power supply is input to the power supply input terminal 181, and the power supply circuit
219 in the circuit board 210 generates DC power of a voltage required for each circuit in the
circuit board 210 and supplies it to each circuit. Further, power is also supplied from the power
supply circuit 219 to the panel power supply circuit 232 of the drive circuit board 230, and
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power necessary for the panel control unit 231 is supplied from the panel power supply circuit
232.
[0030]
According to the television receiver 100 of the present embodiment described above, the
television receiver 100 is configured as a good device by utilizing the thin shape of the display
panel 150. That is, the sound output upward from the speakers 161 to 164 disposed in the base
portion 110 of the housing is reflected by the front surface 121 of the rising portion 120
inclined at an angle of approximately 45 ° and radiated to the front side. Sound is output to the
near side. Therefore, for the user who is in a position where the image displayed on the display
panel 150 is viewed from the front, the sound is emitted from the display panel 150 side, which
is a preferable sound output state. In addition, the holding portion 130 of the display panel and
the rising portion 120 at the lower portion thereof are configured not to have a speaker, and are
configured as a thin casing utilizing the thinness of the image display panel, and have excellent
acoustic characteristics. It can be in the state.
[0031]
Further, in the present embodiment, two speaker units 161 and 162 are disposed as speakers for
the left channel, and two speaker units 163 and 164 are disposed as speakers for the right
channel, for a total of four. By using the speaker unit of the above, even when the volume of the
sound output from one speaker unit is limited due to the limitations such as the thickness of the
base portion 110, it is possible to output a relatively large sound volume. The restriction on the
arrangement of the speakers and the securing of the output volume can be compatible. In
particular, as shown in FIG. 1 and the like, since four speakers are linearly arranged in the lateral
direction, the radiation direction of the sound reflected by the rising portion 120 spreads
laterally, and a preferable sound output state is obtained.
[0032]
In the embodiment described above, an example using an organic EL panel as an image display
panel has been described, but it may be configured as a television receiver using other thin
panels for image display. . For example, the present invention may be applied to a display of
display principle called electronic paper. Alternatively, a liquid crystal image display panel may
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be used. When a liquid crystal display panel is used, it is difficult to reduce the thickness as in the
example of FIG. 3 because it is necessary to incorporate a backlight. However, the circuit boards
are similarly arranged in the same housing configuration. Thus, it is possible to efficiently
perform the processes from the reception and input of signals to the supply of drive signals to
the panel.
[0033]
Further, the shape of the case described in the above-described embodiment is merely an
example, and the present invention is not limited to the configuration shown in each drawing. For
example, the angle of the rising portion 120 is set to a relatively large inclined angle of about 45
°, but may be an upright shape at a looser angle.
[0034]
Further, the circuit configuration shown in FIG. 7 is merely an example, and the present invention
is not limited to the configuration of FIG. For example, a part of the circuit incorporated in the
circuit board 210 incorporated in the base part 110 may be incorporated in the side of the drive
circuit board 230 incorporated in the rising part 230.
[0035]
In the embodiment described above, an example of the image display apparatus configured as a
television receiver having a built-in tuner is described, but a so-called monitor having only a
terminal for inputting an image signal (video signal) is provided. The present invention may be
applied to an image display device. For example, it may be configured as a display for a computer
device.
[0036]
FIG. 1 is a front perspective view of an example of a device according to an embodiment of the
invention; FIG. 1 is a perspective view showing an example of a device according to an
embodiment of the present invention from the back side. FIG. 1 is a side view of an example of a
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device according to an embodiment of the invention; It is a perspective view showing an example
of a device according to an embodiment of the present invention partially disassembled from the
front side. FIG. 1 is a perspective view showing an example of a device according to an
embodiment of the present invention partially disassembled from the back side. FIG. 1 is an
exploded perspective view showing an example of a device according to an embodiment of the
present invention in an exploded manner. FIG. 1 is a block diagram illustrating an example of an
apparatus according to an embodiment of the present invention. It is the perspective view which
showed the structural example of the conventional image display apparatus.
Explanation of sign
[0037]
DESCRIPTION OF SYMBOLS 100 ... Television receiver, 110 ... Base part, 111 ... Infrared receiving
window, 120 ... Rise part, 121 ... Front part, 130 ... Panel holding part, 131 ... Frame part, 140 ...
Base part cover, 150 ... Display panel, 160L, 160R: speaker box, 161 to 164: speaker unit, 170:
back cover, 180: terminal cover, 181: power input terminal, 182: F terminal, 183: HDMI terminal,
184: LAN terminal, 210: circuit board, 220: Shield plate, 221: heat pipe, 230: drive circuit board,
231 to 234: flexible board
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