JPS593665Y2 - television image projection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a television image projection device that allows television images to be enlarged and viewed on a projection screen.

Generally, there is a device commonly called a video projector that enlarges and projects the image of a standard television receiver onto a large screen installed at a certain distance from the television receiver so that the image can be enjoyed. be.

This device can have various structures depending on its method, but one in particular that integrates a television receiver body including a projection screen and an optical system is small in size and easy to install. .

The first conventional example of such an integrated video projector is
As shown in the figure.

1 is the main body of the television receiver, 2 is a projection screen for enlarging the television image;
is measured using the mounting bracket 3 on the television receiver main body 1.

4 is a reflecting mirror that reflects light emitted from the projection tube 5 for projecting a television image onto the projection screen 1;
6 is a holding plate for fixing this reflecting mirror 4.

Further, 7 is a sound reproduction device, for example, a speaker.

A television image from the television receiver main body 1 is projected by a projection tube 5, further reflected by a reflecting mirror 4 as shown by a dotted line, and then enlarged and projected onto a projection screen 2.

The above-mentioned integrated device has the advantage that it can be stored compactly by folding the retaining plate 6 in the direction shown in the figure when not in use.

However, in the case of such a structure, there is a drawback that the mounting position of the speaker 7 cannot be freely selected; for example, as shown in FIG. As shown in the figure, it is necessary to increase the width of the main body to secure space for mounting the speakers 7 on both sides.

Therefore, in the case of FIG. 1, the speaker 7 is located at a high position, which results in poor reproduction of bass sounds, making it difficult to obtain good sound quality.In the case of FIG. 2, the dimensions of the television receiver body 1 are The disadvantage was that it became large.

This invention was made to eliminate the above-mentioned drawbacks.
By attaching the sound reproduction device to the front lower part of the television receiver body and forming the reflector holding plate into a horn shape to give a horn effect to the sound path of the sound reproduction device, bi-fi sound with rich bass is reproduced. An object of the present invention is to provide a television image projection device that can perform the following operations.

Hereinafter, the present invention will be explained with reference to the illustrated embodiments.

FIG. 3 shows a television image projection device according to the present invention, where 11 is a television receiver body, 12 is a projection screen for enlarging a television image, and this projection screen 12 is a television receiver body. 11 is fixed with a metal fitting 13.

Reference numeral 14 indicates a reflector that reflects light emitted from the projection tube 15 for projecting a television image onto the projection screen 12, and 16 indicates a reflector for fixing the reflector 14 and integrating it with the main body 11. It is a holding plate.

This retaining plate 16 is attached to the hinge portion 17 by a hinge portion 17.
It is attached to the main body 11 so as to be foldable and openable and closable in the direction of the arrow shown in the figure.

18 is a speaker which is a sound reproduction device, and this speaker 1
Reference numeral 8 denotes a front portion inside the television receiver main body 11 and is attached to the lower part of the hinge portion 17.

The reflecting mirror holding plate 16 is a holding plate 16 as shown in FIG.
When opened, the structure is such that it has an angle with respect to the horizontal plane so as to form a horn-like shape with the floor surface 19.

With such a structure, the space between the floor surface 19 and the holding plate 16 becomes horn-shaped, and the sound from the speaker 18 is better transmitted, and since the speaker 18 is located low, rich bass can be reproduced.

FIG. 5 shows another embodiment of the present invention, in which the reflecting mirror 14
The shape of the retaining plate 16 for fixing is curved, for example, exponentially shaped.

With such a curved shape, the sound from the speaker 18 becomes smoother and more natural.

Figure 6 shows a further different embodiment of the present invention, in which when the reflector holding plate 16 cannot be made to have a very large angle due to optical system constraints, etc. If the shape is angled, the muffled sound from the speaker 1B will be improved stepwise.

Note that in the above embodiment, the horn shape in the direction perpendicular to the sound path of the speaker 18 was explained;
To improve the horn effect in the horizontal direction, the housing of the speaker 1B can be made to have an angle with respect to the vertical plane as shown in Figure 7, or it can be curved as shown in Figure 8. For example, sound clarity can be improved not only in the vertical direction but also in the horizontal direction, and even better bi-fi sound can be obtained.

As explained above, according to the present invention, the sound reproduction device is attached to the front lower part of the television receiver body, and the reflector holding plate is formed in a horn shape so as to give a horn effect to the sound path of the sound reproduction device. By doing so, it is possible to provide a television image projection device that can improve the clarity and reproduce bi-fi sound with rich bass.

[Brief explanation of the drawing]

1 and 2 are a side view and a front view showing a schematic configuration of a conventional television image projection device, and FIG. 3 is a side view showing a schematic configuration of a television image projection device according to an embodiment of the present invention. , FIG. 4 is a detailed view of part A in FIG. 3, FIGS. 5 and 6 are structural diagrams of a reflector holding plate showing other embodiments of the present invention, and FIGS. It is a top view which shows the housing|casing of the speaker in a modification. 11...Television receiver body, 12...
...Projection screen, 14...Reflector, 16
... Reflector holding plate, 17 ... Hinge part, 1B ... Speaker, 19 ... Floor surface.

Claims (2)

[Scope of utility model registration request] (1) In a television projection device that enlarges and projects a standard television image onto a projection screen that is integrated with a television receiver main body, the television image from the television receiver is reflected onto the projection screen. a reflector holding plate that holds a reflector for projecting images onto the television receiver body and is attached to the television receiver body so as to be openable and closable about a fulcrum; 1. A television image projection device, comprising: a speaker disposed on a front surface of the television image projection device, and wherein when the reflecting mirror holding plate is opened, the holding plate forms a horn shape between the holding plate and the floor surface. (2) The utility model registration claim No.
The television image projection device according to item 1).