JPH0279687A - Piezoelectric speaker for plane television - Google Patents

Abstract

PURPOSE:To unify right and left piezoelectric speakers in compact shape by providing the piezoelectric speakers formed by mounting piezoelectric sounding bodies on diaphragms on both sides of the plane television and opening the front plane of the plane television. CONSTITUTION:The piezoelectric speakers 1, 1 in which plural piezoelectric sounding bodies 3 are embedded in the insides of rectangular diaphragms 2 by using hinges 7, 7 are mounted on the right and left sides of the plane television 6 in forward and backward directions in such a way that they can be turned freely, and they are connected electrically. When the plane of the television is opened by making the piezoelectric speakers 1, 1 face forward, the screen 6a of the plane television 6 can be exposed to use. Meanwhile, when the piezoelectric speakers 1, 1 are turned so as to close the front plane of the plane television 6 in such state, they close the front plane of the plane television 6 disabling to use the television. In such a way, it is possible to reduce an installing space and also, since a wiring cord is not exposed to the outside, a fine view can be prevented from being impaired.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a piezoelectric speaker integrated with a flat panel television.

Recently, thin flat TVs such as large LCD TVs and wall-mounted TVs have been put into practical use.

Furthermore, one of the ways to enjoy television these days is to use speakers as external speakers of the television in order to enhance the sense of realism.

By the way, a typical conventional speaker is a dynamic speaker equipped with a voice coil.This dynamic speaker has a box-shaped resonance chamber, so the thickness dimension can be reduced. There is a limit to how thin the TV can be, and it has been difficult to make it as thin as or thinner than the flat TV.

Therefore, when a dynamic speaker is used as an external speaker for a flat-screen TV, it is difficult to integrate the two, resulting in drawbacks such as a large installation space and a wiring cord that impairs aesthetic appeal. This disadvantage is particularly problematic in the case of wall-mounted televisions.

The present invention has been made in view of the current situation, and it is an object of the present invention to provide a piezoelectric speaker for a flat-screen TV that can be made thinner and, as a result, can be integrated with a flat-screen TV.

The piezoelectric speaker for a flat TV according to the present invention is provided with piezoelectric speakers in which a piezoelectric sounding body is attached to a diaphragm on both the left and right sides of a flat TV such as an LCD TV and a wall-mounted TV.
It is characterized in that the front surface of the flat television is opened and closed using these piezoelectric speakers.

Work - 111■ In such a case, you can open the piezoelectric speaker to watch a flat-screen TV, and if you fold it and close it to face the flat-screen TV,
The two will be integrated in a compact form.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view showing the front side of a piezoelectric speaker for a flat TV according to the present invention, and FIG. 2 is a perspective view showing the back side thereof.

This piezoelectric speaker l has a plurality of piezoelectric sounding bodies 3 (
In the illustrated example, it has a structure in which 5 pieces are buried, and the diaphragm 2
The peripheral edge of the frame 4 is held by a frame 4 shaped like a picture frame.

The diaphragm 2 is made of a foamed resin plate such as foamed polystyrene or foamed polyethylene. The piezoelectric sounding body 3 is formed by adhering a metal disk of a larger diameter concentrically between a pair of disks made of piezoelectric ceramic such as PZT, and each piezoelectric sounding body 3
is connected to an amplifier (not shown) via a lead wire 5.

In this way, a predetermined electrical signal is transmitted from the amplifier to each piezoelectric sounding element 3.
, these drive the diaphragm 2, and the diaphragm 2 emits voice and music.

Note that the number of piezoelectric sounding bodies 3 is not limited to the number shown in the illustrated example, and may be any number that can substantially drive the diaphragm 2, of which various sizes are selected depending on the application. good.

Next, based on FIGS. 3 and 4, the above piezoelectric speaker l
We will explain the case where this is used as an external speaker for a flat-screen TV such as a large LCD TV or a wall-mounted TV. however,
FIG. 3 is a perspective view showing the piezoelectric speakers attached to the left and right sides of the flat television set in an open state, and FIG. 4 is a perspective view showing the piezoelectric speakers in a closed state.

As shown in the figure, the piezoelectric speakers 1, 1 are attached to the left and right sides of the flat-screen television 6 using hinges 7.7 so as to be rotatable in the front-back direction, and both are electrically connected.

Thus, when the piezoelectric speakers 1, 1 are opened in a double-door shape facing forward, the screen 6a of the flat television 6 is exposed. On the other hand, if the piezoelectric speakers ISl are rotated in this state so as to close them together, they will be in a non-use state in which they close the front surface of the flat television 6. In other words, in this piezoelectric speaker for flat TV, piezoelectric speaker 1
, 1 functions as an external speaker that also serves as a protective cover. Note that a locking means for maintaining the closed state is provided on the closing surface of the piezoelectric speaker IS1.

Then, if you attach a thin mirror, poster, or your favorite pattern to the back side 1asla of the piezoelectric speaker 1.1, it will become more fashionable, and the flat screen TV can be used as an interior decoration. This is preferable for implementation. Furthermore, a poster or the like may be attached to the surface of the piezoelectric speaker L1 to enhance its fashionability when in use.

In the case of the present invention described above, the diaphragm is driven by a piezoelectric sounding body, so it is possible to realize a lightweight and thin planar speaker. As a result, LCD TVs and wall-mounted TVs can be used as external speakers integrated with flat-screen TVs, reducing installation space and eliminating the need to expose wiring cords to the outside. , without impairing the beauty.

Furthermore, it has the advantage of functioning as a protective cover for the flat TV when not in use, and there is also a mirror on the back of the piezoelectric speaker.
There is also the advantage that it can be used as interior fashion by attaching posters and the like.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the front side of a piezoelectric speaker for a flat-screen TV according to the present invention, Fig. 2 is a perspective view showing the back side thereof, and Fig. 3 is a state in which the piezoelectric speakers attached to the left and right sides of the flat-screen TV are opened. FIG. 4 is a perspective view showing the piezoelectric speaker in a closed state. 1... Piezoelectric speaker l, 2... Vibration plate, 3... Piezoelectric sounding body, 6... Flat television. Patent applicant Murata Manufacturing Co., Ltd.

Claims (1)

[Claims] (1) Piezoelectric speakers each having a piezoelectric sounding body attached to a diaphragm are installed on both the left and right sides of a flat television such as a liquid crystal television or a wall-mounted television, and these piezoelectric speakers are used to open and close the front of the flat television. A piezoelectric speaker for flat TVs featuring