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DESCRIPTION JPS56108670

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DESCRIPTION JPS56108670
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing a conventional projection
type television receiver, FIG. 2 is a side view showing the screen shown in FIG. 1, and FIG. 3 is an
embodiment of this invention FIG. 4 is a front view showing the screen in FIG. 3. In the figure, 1
is an optical projection unit, 2 is a speaker, 3 is a projector, 4 is a screen, 5 is a supporting
device, and 6 is a reverberation plate. In the drawings, the same reference numerals denote the
same or corresponding parts.
DETAILED DESCRIPTION OF THE PROBLEM The present invention relates to a projection type
television receiver and aims to improve its acoustic effect. A conventional projection type
television receiver has a projector (3) having an optical projection section (1) and its lower shin
speaker (12)) as shown in FIGS. 1 and 2, And a support device (5) for supporting the screen (4). It
projects images from the projection part Il + onto the screen (4) and reflects +117 ohms Z oo
ppeud by the speaker 12) by the screen 14)). However, since the screen (4) is set so as to reflect
the largest amount of light to the viewer's eyes as the projection light from the optical projection
section (1), it is located under the screen (indicated by the dotted line) The sound from the
speaker (41 faced upwards from the viewer and became missing sound quality of strong
directivity (indicated by one-dot chain line), which is particularly directional, and the sound
source was also insufficient. Especially improvement of sound quality such as implementation of
stereo broadcasting has been attempted, it is difficult for such a projection type television job
receiver to deal with this. SUMMARY OF THE INVENTION The present invention has been made
in order to solve the above-mentioned drawbacks, and it is intended to improve sound quality
and volume. Hereinafter, FIGS. 3 and 4 which are one embodiment of the present invention will
be described. 3) and 4) are exactly the same as those of the conventional device, and 16) is a
reverberation plate having a predetermined shape and area, a supporting device at the F 1
portion of the screen (4); 5 ). In the projector type preview receiving (2) machine configured as
described above, the sound from the speaker 12 is reflected by the screen 4 and the
16-09-2018
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reverberation plate 6, Is positioned below the screen 14+, the sound is reflected toward the
viewer. You can improve the sound quality as well as increase the sound volume f) s. As
described above, according to the present invention, it is possible to obtain a projection type
television receiver capable of listening to sounds including high tones, and the practical value of
this invention is great.
16-09-2018
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