JPS59183581A - Speaker system - Google Patents

Abstract

PURPOSE:To attain free sound reproduction by driving a front glass of a TV set by a vibrator to spread a reproducing band up to a high sound frequency region. CONSTITUTION:An electric signal is inputted to a dynamic vibrator 11 bonded to four corners at the back side of the front glass 10 and the vibrator is vibrated. This vibration is delivered to the front glass 10 so as to reproduce an acoustic signal. It is not required to provide a speaker mounting area on the front panel, allowing to save space of a TV set and to make the TV set compact, and since the degree of freedom of the installation of a switch or the like is increased and the sound is irradiated from the front face, the reproducing band is spread up to the high sound frequency. The said vibrator can be of electromagnetic type, the miniaturization is attained in comparison with the dynamic type in this case and mechanical strength is attained. Further, the vibrator can be of piezoelectric type, then the simple structure and thin profile are attained and the effect to be excerted on picture quality by magnetism is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a speaker system built into a television set.

2. Description of the Related Art Structures of Conventional Examples and Their Problems Television sets are now widely used in most households, and in recent years, television sets have become significantly more compact and simple. For this reason, speakers with a good space factor and their mounting positions are carefully selected.

A conventional television set speaker will be described below. FIG. 1 is a perspective view of a conventional television section, where 1 is a cabinet, 2 is a front grill attached to the inside of the cabinet 1, and 3 is a front grill 2.
4 is a cathode ray tube attached to the rear surface of the front grill 2, 5 is a windshield attached to the front of the
are speakers attached to both sides of the cabinet 1.

Audio signals are reproduced from the speakers 5 on both sides of the cabinet 10. However, since speakers generally have directivity as shown in FIG. 2, there is a problem in that high-frequency sound pressure decreases at a position deviated from the front axis of the speaker, resulting in deterioration of sound quality. For this reason, as shown in Figure 3, some television sets have speakers 7 with a good space factor, such as an oval shape, mounted on the front of the front panel 6, but this requires a sufficient space for mounting the speakers on the front. Problems arise when restrictions are added to the layout of switches and switches.

OBJECT OF THE INVENTION The present invention solves the above-mentioned conventional problems, prevents a drop in sound pressure in high frequencies, and furthermore allows mounting of speakers on the front panel without requiring special area. An object of the present invention is to provide a speaker system for a television station capable of reproducing an acoustic signal from the front.

Structure of the Invention The present invention provides a windshield provided on the front surface of a cathode ray tube, a pie break for driving the windshield,
This is a speaker system equipped with a cabinet that supports the windshield, and the windshield is used as a diaphragm.
By radiating acoustic signals from the front of the cabinet, it is possible to prevent a drop in sound pressure in the high frequency range, make the television set more compact, and improve the sound quality.

DESCRIPTION OF EMBODIMENTS FIG. 4 shows a perspective view of a speaker system according to an embodiment of the present invention, in which 8 is a cabinet, 9 is a front grill Q10 is a windshield, and these are the same as the configuration of the conventional example. . Reference numeral 11 denotes an electrodynamic vibrator bonded to a square on the back surface of the windshield 1o, and is not in contact with any portion other than the windshield 10.

The operation of the speaker system of this embodiment configured as described above will be explained below.

An electric signal is input to the pie break 11, and the vibrator vibrates. This vibration is transmitted to the windshield 10, causing the windshield 10 to vibrate and reproduce an acoustic signal.

According to this embodiment as described above, by using the windshield 10 as a diaphragm, there is no need to provide a space for mounting speakers on the front panel, and the television center can be made space-saving and compact. The degree of freedom in installing switches, etc. is also great, and since the sound is radiated from the front, the reproduction band is widened to the high frequency range, and natural sound reproduction is achieved.

In this embodiment, the pie break is of an electrodynamic type, but it may be of an electromagnetic type. In this case, the practical advantages are that it can be made smaller and has a mechanically stronger structure 1 than the electrodynamic type. Furthermore, the vibrator may be of a piezoelectric type, which allows the structure to be simplified and made thinner. Since this piezoelectric type does not use magnetic force unlike the electrodynamic type and electromagnetic type, it has the advantage that the image quality is not affected by magnetism.

Effects of the Invention As described above, the present invention provides a method for mounting speakers on the front panel by driving the windshield of a television set with a vibrator. This allows the playback band to be extended to the high frequency range.

Furthermore, by making the vibrator an electromagnetic type, it is easy to design a compact vibrator, and it is still mechanically strong, which is advantageous in practice. Furthermore, if the vibrator is a piezoelectric type, no magnetic force is used, so there is no negative effect on the screen due to magnetism, which is very effective.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway perspective view of a conventional television set, Figure 2 is a speaker directional frequency characteristic diagram, Figure 3 is a perspective view of a conventional television set with front speakers installed, and Figure 4 is a booklet. FIG. 1 is a perspective view of a television station showing an embodiment of the invention. 8...cabinet, 9...to windshield 10...windshield, 11...
...Electrodynamic vibrator.

Claims (5)

[Claims] (1) A speaker system comprising a television set, a windshield in front of the television set, and a vibrator that drives the windshield. (2) The speaker system according to claim 1, wherein the pie break is joined to the periphery of the windshield. (3) The speaker system according to claim 1, wherein the vibrator is of an electrodynamic type. (4) The speaker system according to claim 1, wherein the vibrator is of an electromagnetic type. (5) The speaker system according to claim 1, wherein the vibrator is of a piezoelectric type.