JPS6237870B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mounting structure for a screen in a projection television receiver, in particular, which allows the screen to be easily mounted to a cabinet body in a predetermined shape without being distorted, and with good workability. The object is to provide a device that can also improve the appearance of the surrounding area.

First, the basic structure of a rear type projection television receiver will be explained with reference to FIG. In the figure, reference numeral 1 denotes the main body of the cabinet, with a transmissive screen 2 installed in the opening at the top of its front surface, and a projection element 3 such as a red, green, and blue cathode ray tube for projecting color television images inside. The color television image from the projection element 3 is projected onto the screen 2 via an optical system 4 such as a lens and reflectors 5 and 6, and the color television image is projected from in front of the screen 2. This allows you to view the image.

In such a projection type television receiver, in order to project a color television image without distortion or color shift, it is necessary to attach the screen 2 to the cabinet body 1 accurately without bending or other deformation. be. However, in conventional projection television receivers, this screen 2
To attach the screen 2, as shown in FIG. Since the screen 2 is attached by engaging with the engaging tool 11 and the decorative bar 13 is attached to the upper bar 12 above the decorative bar 13 by engaging with the engaging tool 14, the screen 2 may be bent at the time of installation and the screen 2 may be bent afterward. When used, there is a problem that the color television image warps and deforms due to changes in ambient temperature, and the correct color television image is not projected.Furthermore, the installation process requires a lot of work and is difficult to work with. It had the disadvantage of getting used to it.

Therefore, the present invention solves these conventional drawbacks, allows the screen to be reliably attached to a predetermined shape without causing distortion to the cabinet body, and also simplifies the work for attaching the screen. It is an object of the present invention to provide a device that can improve workability and also provide a good appearance around the mounting portion.

Hereinafter, a third embodiment of the present invention will be described.
This will be explained in detail with reference to the drawings.

In this device, first, a frame 15 is used for mounting the screen 2. This frame body 15 has the fifth,
As shown in Figure 6, a covering member 17 made by drawing a metal plate is provided on the outer surface of the core material 16 formed in a □ shape, and the screen 2 is fixed to the inner peripheral portion of one surface using double-sided tape 18 or the like. . This frame has a cabinet body 1 on one side and on the opposite side.
The tongue pieces 19, 20 for fixing to the cover member 17 are provided by screws 21, 22, etc., or by cutting and raising them integrally with the covering member 17. By fixing the screen 2 to the frame body 15 in advance in this manner, it is possible to prevent the screen from bending during installation or warping during use, and to ensure accurate installation.

On the other hand, a middle crosspiece 23 formed by bending a plate-shaped metal rod is provided at the lower end of the front opening of the cabinet body 1, and the middle crosspiece 23 is attached to the cabinet body 1 with screws 24 or the like. This middle crosspiece 23 is provided with through holes 25 at a plurality of locations. When attaching the screen 2 to the cabinet body 2, the tongue pieces 19 attached to one side of the frame 15 are fitted into the plurality of through holes 25 provided in the middle crosspiece 23 as shown in FIG. As shown in A, the frame body 15 with the screen is pulled up and positioned at the front opening of the cabinet body 1, and the tongue piece 19 attached to the other side is attached to the upper crosspiece 27 with a fixing member 26 such as a screw. Fix the screen 2 to the cabinet body 1. By using the fitting between the tongue piece 19 and the through hole 25 of the middle crosspiece 23 in this way, the screen 2 can be easily attached with good workability.

Further, as shown in FIG. 8, an engagement tool 2 is provided on the upper crosspiece 27 above the frame 15 attached to the main body 1, as shown in FIG.
8 is attached, and the decorative bar 29 to be attached to this part is provided with a roughly L-shaped recess 30, and an engaging tool 31, which is also formed from a metal plate into a roughly crank shape, is attached to the bottom wall of the concave part 30. First, as shown in FIG. 4B, attach the decorative bar 29 so that the wide part of the recess 30 of the decorative bar 29 fits with the engagement tool 28.
9 from above to the bottom, and then to the left to engage both the engaging tools 28 and 31 as shown in FIG. 10, and as shown in FIG. Attach it to the front of the upper crosspiece 12. In this way, the decorative crosspiece 29 can be easily attached to the upper crosspiece 29 without using screws or the like, and the mounting portion of the tongue piece 20 and the screw 26 can be hidden by the decorative crosspiece 29. Therefore, the appearance of the area around the attachment part of the frame 16 can be improved. In addition, in order to accurately position the decorative crosspiece 29, the upper crosspiece 2
7 may be provided with a protrusion 32, and the decorative bar 29 may be provided with a positioning recess 33 so that they fit together.

As described above, according to the present invention, since the screen is fixed to the frame and then attached to the cabinet body, the screen can be accurately attached to a predetermined shape without distortion such as bending or warping. Furthermore, when attaching it, the tongue piece on one side is inserted into the hole in the middle crosspiece, and the tongue piece on the other side is attached to the upper crosspiece, so that it can be easily attached with good workability. Furthermore, the decorative beam can be easily attached to the peripheral portion of the attachment portion, and the appearance thereof can be improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the basic structure of a projection television receiver, FIG. 2 is an exploded perspective view of a conventional projection television receiver, and FIG. 3 is a projection television receiver according to an embodiment of the present invention. 4A, B, and C are side views of the television receiver; FIG. 5 is a perspective view of the screen and frame used in the television receiver; and FIG. 6 is a main view of its installation state. Sectional view of section 7
The figure is a cross-sectional plan view of the main body of the cabinet of the receiver, Figure 8 is a front view of its main parts, Figures 9A and B are a front view and plan view of the decorative frame used in the receiver, and Figure 10 is a front view of the decorative frame used in the receiver.
The figure is a sectional plan view of the main parts in the attached state. 1...cabinet, 2...screen, 3...
...Projection element, 15... Frame, 18... Double-sided tape, 19, 20... Tongue piece, 23... Middle crosspiece, 25...
...Through hole, 26...Screw, 27...Upper bar, 28...
Engagement tool, 29... Decorative bar, 30... Recess, 31...
...Engagement tool.

Claims (1)

[Claims] 1. A cabinet body with a built-in projection element for projecting television images is provided, a transparent screen on which the television image is projected is fixed to a frame, and a tongue piece provided on one side of the frame is connected to the Fit into the hole formed in the middle crosspiece of the cabinet body,
The screen is attached to the cabinet body by fixing the tongue piece provided on the opposite side of the frame body to the upper crosspiece of the cabinet body with a fixing member such as a screw, and Attach an engaging tool to a position above the position where the piece is fixed, and attach an engaging tool that engages with the engaging tool to the decorative frame, and engage both of the engaging tools to secure the decorative frame. A projection television receiver, characterized in that it is attached above the frame of the cabinet main body.