JPH11275689A - Image display with loudspeaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display which is integrated with a loudspeaker into a single body. SOLUTION: An image displaying board 1 having a curved surface in a one-dimensional direction is fixed to a frame body 2 with its convex surface on the front side. The image display board 1 is formed by sticking a film-like image display surface to the surface of a curved-surface plate 3 and connecting the image display surface to a power source for transmitting image signal via electrodes which are not shown. On the rear concave surface of the curved- surface plate 3, a plurality of ribs 5 is provided and a voice coil is arranged between the ribs 5 and fixed to the rear surface of the curved-surface plate 3 with an adhesive via a short cylindrical hard connecting member. On the rear side of the voice coil, a yoke 9 and a permanent magnet are arranged separately and fixed to a frame 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device integrally provided with a speaker.

[0002]

2. Description of the Related Art Conventionally, in a television or the like, an image display section and a speaker are provided separately.

[0003]

However, if these are separate, a large space is required, and there is a limit to space saving especially in a wall-mounted television or the like.

An object of the present invention is to solve the above-mentioned problems,
An object of the present invention is to provide an image display device including a speaker in which a speaker is integrated with an image display unit to secure an advantage in space.

[0005]

According to the present invention, there is provided an image display apparatus provided with a speaker according to the present invention, comprising a curved surface having a bulging surface facing forward and displaying an image by electrical means. Characterized in that a voice coil is fixed to the back surface of.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the illustrated embodiment. 1 is a perspective view as viewed from the front, FIG. 2 is a perspective view as viewed from the rear, and FIG. 3 is a cross-sectional view. The image display plate 1 having a curved surface in a one-dimensional direction with the bulging surface facing forward is a frame 2
It is fixed to. The image display plate 1 has a film-shaped image display surface 4 bonded to a surface of a curved plate 3 made of wood, synthetic resin, or the like. The image display surface 4 is used for transmitting image signals through electrodes (not shown). The signal line is connected. In addition, as the image display surface 4, for example, a base salt EL (plastic surface light emitting element) that can be manufactured in a thin and lightweight film shape can be used. For example, a plurality of ribs 5 of the same material as the curved plate 3 are provided on the concave back surface of the curved plate 3, and a voice coil 6 having an audio signal line connected between the ribs 5 is provided.
The voice coil 6 is fixed to the back surface of the curved plate 3 by an adhesive via a short cylindrical hard connecting member 7. A frame 8 is provided at a rear portion of the frame body 2, and a yoke 9 and a permanent magnet provided in the yoke 9 are attached to the frame 8, and are electromagnetically coupled to the voice coil 6 while being separated therefrom. Have been.

In this case, if the voice coil 6 is arranged between the ribs 5 as in the embodiment and is accommodated in the concave portion of the image display panel 1, and the frame 2 is almost equal in thickness to the above, An extremely thin image display device in which the thickness of the image display plate 1 is added to the thickness of the voice coil 6 can be obtained. Rib 5
Plays a role in maintaining the shape of the curved plate 3 and inducing a wave motion in the curved plate 3 and can be stretched in any direction.

[0008] Here, when an image signal of a television, a video or the like is input to the image display surface 4 via an electrode, an image is displayed on the image display surface 4. At the same time, when a voice signal is input to the voice coil 6, a vibration corresponding to the voice is generated in the voice coil 6 by an electromagnetic action with the yoke 9 through which the magnetic flux from the permanent magnet flows. The light is transmitted to the curved plate 3. Since the curved plate 3 is reinforced by the ribs 5, the vibration of the curved plate 3 is suppressed, and most of the sound energy is transmitted to the curved plate 3 as waves. This wave is a curved plate 3
In the above, collision between molecules is caused to be converted into a voice, and a voice whose sound pressure level is increased from the curved plate 3 is emitted from the curved plate 3. This sound does not extrude air due to the vibration of the curved plate 2, that is, the vibration, and thus has no directivity, and the sound is transmitted to all directions.

Also, unlike a conventional speaker, no damper is used between the voice coil 6 and the curved plate 3 for supporting the conventional cone paper so that it can be easily moved. Can be faithfully reproduced.

The fact that the curved surface plate 3 does not easily vibrate even if it emits sound means that the image display plate 1 does not vibrate, which is advantageous because there is no fluctuation of the image. Also,
It has been confirmed that when the curvature of the curved plate 3 is changed, the collision ratio between molecules changes and the sound pressure level changes. However, the curvature is adjusted in consideration of the appearance of an image, the size of the image display plate 1 and the like. It is preferable to select an appropriate one. In the embodiment, an example in which the image display plate 1 is bent in a one-dimensional direction is shown, but the image display plate 1 may be expanded in a two-dimensional direction, that is, a spherical shape.

In the embodiment, the image display plate 10 is bonded to the curved plate 3. For example, the image display plate 1 is a liquid crystal plate, and a rib 5 and a voice coil 6 are attached to the back surface of the liquid crystal plate. The sound may be output directly from the board itself. Further, if the curved plate 3 is fixed by the frame 2 or the like, the ribs 5 are not necessarily required.

The voice coil 6 can be mounted at an arbitrary position on the back surface within a range where the thickness of the speaker does not increase. Furthermore, omitting frame 8,
The yoke 9 and the permanent magnet can be integrated with the voice coil 6, whereby the vibration generated in the voice coil 5 is reduced. However, since the wave is generated and transmitted to the curved plate 3, the efficiency is improved. Good voice can be emitted.

[0013]

As described above, the image display device provided with the speaker according to the present invention utilizes the screen of the image display plate as a speaker, and the thickness of the image display plate is extremely large only by the thickness of the image display plate and the thickness of the voice coil. It is thin and has good sound quality.

[Brief description of the drawings]

FIG. 1 is a perspective view seen from the front.

FIG. 2 is a perspective view seen from the rear.

FIG. 3 is a sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image display board 2 Frame body 3 Curved board 4 Image display surface 5 Rib 6 Voice coil 7 Connection member 8 Frame 9 Yoke

Claims (6)

[Claims] 1. An image display device provided with a speaker, characterized in that a voice coil is fixed to a back surface of an image display plate which is formed of a curved surface with a bulging surface facing forward and displays an image by electric means. 2. An image display device comprising the speaker according to claim 1, wherein a rib is formed on a back surface of the image display plate. 3. The image display device according to claim 2, wherein the rib is arranged at a position where a wave input from the voice coil to the image display plate is easily transmitted along the image display plate. 4. The image display device provided with the speaker according to claim 1, wherein the image display plate has a film-shaped image display unit bonded to a curved plate. 5. An image display device comprising the speaker according to claim 1, wherein a yoke and a permanent magnet are spaced apart behind the voice coil. 6. An image display device comprising the speaker according to claim 1, wherein a yoke and a permanent magnet are fixed to the voice coil.