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JPS49141946

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complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
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DESCRIPTION JPS49141946
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing an embodiment of a
channel display according to the present invention, and FIG. 2 is a sectional view taken along the
line II-II in FIG. 3 is a cross-sectional view taken along line 1 of FIG. 1, FIG. 4 is a bottom view of
the display, FIG. 5 is a side view of the display, and FIG. 6 shows an example of volume display by
interference fringes. Operation explanation The symbols op in the figure, 1 ..... .. case body, 2 ...
insertion hole h3. 7 ······· Reflector, 8 ········ Pin spot plate. 9Ed sphere. Fig. 1 Fig. 2-103-49-141
946 (2) Fig. 3 Fig. 4 Fig. 5 Fig. 6 correction Fig. 2 Fig. 2 is corrected as follows. Fig. 2 '-104-
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a channel
indicator for use in an audio apparatus, particularly four first-class audio apparatus, and 2, whose
purpose is to provide a clear display of channels with a simple structure and It is an object of the
present invention to provide a channel indicator capable of displaying the sound intensity of each
channel. An embodiment of the present invention will be described below with reference to the
drawings. 1 to 5 show an embodiment of the present invention, in which the case is a case body
integrally formed of a synthetic resin, and two light emitting diodes or light bulbs provided at the
center of the bottom of the case body l. And a four-channel display part 3. Reference numeral 4
denotes a light bulb insertion portion provided at four corners of the case main body 1, which
has an opening 5 at the bottom of the case main body and a window 6 at the inner wall surface.
The reference numeral 7 denotes a reflection plate such as an aluminum plate attached to the
inner bottom surface of the case body 1, and the reference numeral 8 denotes a pin spot plate I
cast above the reflection plate 7. A large number of concentric circular steps having the following
are formed, and a mesh of shallow grooves orthogonal to the surface is engraved on the surface.
In addition, a hole is provided in the center, and the four-channel display component 3 is
supported by the hole. ! , ':: + Q1. A spacer 9 is fitted to the ',' j '[r1 +-] :,' 'II', 2 ', 93'. The reference
numeral 10 denotes a collar plate attached to the surface of the case body 10 and serving as a
cover, and 11 denotes a mounting member for mounting on a device body (not shown). The
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mounting member 11 is integrally formed with the case body 1. One 12 is a printed circuit board
fixed to the bottom of the case body 1 also serving as the bottom cover of the case body 1, and
four light bulbs 13 inserted into the insertion portion 4 of the case body 1 are attached to the
four corners of the surface. The four-channel display part 3 is mounted at the central portion.
Furthermore, the required printed wiring is given to the back side. That is, in the case of 4
channels, the 4 channel display part 3 at the center always turns on and the light intensity of the
light bulbs 13 at the four corners changes according to the output of each corresponding
channel. In this case, the circuit is configured such that predetermined two of the four light bulbs
change their light intensity in proportion to the output of the corresponding channel. When
configured in this way, a case book if the stereo stocking equipment is used in four channels. The
four channel display part 3 located at the central part of the 1 · − □ 4 body 1 is turned on to
display a row of four panels, and the light bulb 13 at the four corners is proportional to the
volume of each speaker of the four channels Is lighted so as to change, and interference fringes
appear on the pin spot plate 8 as shown in FIG. 6 in accordance with the variation 1YS of the
light quantity, and the change in volume can also be visually recognized.
In addition, when used in two channels, two light bulbs of the channel corresponding to FL and
FR at the time of four subchannels are usually lighted so that the light quantity changes in
proportion to the volume of the corresponding speaker. In accordance with the change,
interference fringes appear from two corners of the bin spot plate 8 and are displayed through
color gray 10'e. The interference fringes at the time of each two channels appear also at the time
of four channels where there is no output of RL and RR, but it is distinguished depending on
whether the central four channel display part 3 is lit or not. As described above, according to the
present invention, a light bulb to be energized according to the output of the channel
corresponding to the four corners is provided, and it operates only at the center part when there
are four channels. 1-+-15 display parts are provided, and they are provided with pin spot graters
that are illuminated by four light bulbs to form interference fringes on the surface, and the
channel display while having a simple structure It is possible to provide a channel indicator
capable of visually knowing the strength and weakness of the sound of each channel, as well as
performing completely clearly.
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