JP3271414B2 - Screen mounting device for projection television receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screen mounting device for a projection type television receiver for enlarging and projecting an image output to a cathode ray tube by a lens.

[0002]

2. Description of the Related Art Hitherto, for mounting a screen on a projection type television receiver, a structure as disclosed in Japanese Patent Application Laid-Open No. 63-138784 has been proposed. As shown in FIG. 5, a U-shaped frame 102 having a groove provided on a screen mounting surface 101A of a projection television receiver main body 101 is attached with a screw 106, and an opening of the U-shaped frame 102 is provided. From screen 1
03 is slide-inserted. Further, a bar 104 having a projection 104A that engages with a holding member 105 having spring properties and having an open portion formed on the groove and the screen mounting surface 101A.
And detachably attached to the screen attachment surface 101A.

[0003]

However, in the above-described conventional configuration, it is necessary to secure the strength of the frame for mounting the screen or to provide a holding member having a spring property on the screen mounting surface. It is difficult to reduce the width (joint width). Therefore, the biggest appeal of projection television receivers is the "large screen"
There is a problem that the design that can emphasize the image is limited.

An object of the present invention is to solve the above-mentioned problems, and to provide a high-product-value projection television receiver in which the screen of the projection television receiver can be easily attached and detached and the joint width is small. Aim.

[0005]

In order to solve the above problems, a screen mounting device for a projection type television receiver according to the present invention accommodates a cathode ray tube , an optical component, and an electric circuit therein and has a front opening. A transmission screen in which a projection image from the cathode ray tube is formed by the optical component.
Cabinet body with a recess into which the fitting is fitted
And in a state where the screen is fitted in the recess,
Each to fix the top, bottom, left and right surroundings of the screen
An upper section having four mounting bars having an L-shaped cross section
The mounting surface and the left and right horizontal mounting bars are directly
With multiple key-shaped claws arranged on the intersecting surface,
The key in the recess in the front opening of the cabinet body.
An opening is provided for insertion and fitting of the claw.
With the lean fitted, the upper mounting bar
An upper end opening provided in the cabinet body with a hook
After inserting and fitting into the part, each of the two left and right
Left and right side hooks provided on the cabinet body
The edges of the two left and right lateral mounting bars are
Inserted fitting so that it contacts each edge of the upper mounting bar
The edge of the lower mounting bar is attached to the two left and right lateral portions.
After inserting and fitting so as to abut against the edge of the crosspiece,
Fasten the lower mounting bar to the cabinet body with screws
So that the lower mounting bar is connected to the cabinet book.
It is intended to be a screw fixing bar when fixing the screen to the body .

[0006]

According to the present invention, the screen can be easily attached to and detached from the projection type television receiver, and the joint width can be reduced. Further, the configuration of the multi-screen device in which the projection television receivers are arranged in a matrix is facilitated, and the effective display screen is enlarged.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a screen mounting device for a projection type television receiver according to the present invention will be described below with reference to FIGS. FIG. 1 shows an external perspective view and an exploded perspective view of a main part of a screen mounting device of a projection television receiver.

In FIG. 1, reference numeral 1 denotes a projection type receiver main body. 2
Is a screen. Reference numeral 3 denotes a mounting bar (upper), which has a claw 3A which engages with a hole 1A provided in the main body 1, and holds the screen 2 between the main body 1 and the screen 2. Reference numeral 4 denotes a mounting bar (horizontal), which has a claw 4A which engages with a hole 1B provided in the main body 1 to hold the screen 2 between the main body 1 and stop the movement of the mounting bar (upper) 3. . 5 is a fixed bar (lower),
The screen 2 is held between the main body 1 and the movement of the mounting bar (horizontal) 4 is stopped.

A procedure for assembling the screen device will be described below with reference to FIGS. First, the mounting bar (upper) 3 is inserted from above the screen 2 fitted into the concave portion 7 of the main body 1 and mounted. (FIG. 2A) At this time, the claw 3A provided on the mounting bar (upper) 3 is inserted into the hole 1A provided in the main body 1. (Figure 2
(B)) Thereafter, the mounting bar (upper) 3 is slid in the −X direction so that the claw 3A of the mounting bar (upper) 3 engages with the main body 1 and the mounting bar (upper) 3 in the −Y direction. Will not move.
(FIG. 2 (C)) Next, the claw 4A provided on the attachment bar (horizontal) 4 is
And inserted so as to engage with the hole 1B. (FIG. 3
(A), (B)) Thereafter, the mounting bar (horizontal) 4 is slid in the Z direction so that the claw 4A of the mounting bar (horizontal) 4 engages with the main body 1 and is caught. The mounting bar (horizontal) 4 does not move. (FIG. 3 (C)) At this time, the mounting bar (horizontal) 4 comes into contact with the end face of the mounting bar (upper) 3 at the same time, so that the movement of the mounting bar (upper) 3 in the X direction is restricted. Finally, the fixed bar (lower) 5 is inserted so as to engage with the hole 1C of the main body 1 (FIG. 4A), and the screw 6 is fastened through the holes 1E and 1D provided in the main body 1.
The main body 1 and the fixed bar (lower) 5 are fixed. (FIG. 4 (B),
(C)) Further, the end faces of the fixed bar (lower) 5 and the mounting bar (horizontal) 4 are in contact with each other, and the movement of the mounting bar (horizontal) 4 in the −Z direction is restricted.

[0010] By the above series of assembling work, the screen is
The pin 2 is sandwiched between the main body 1 and the mounting bar (upper) 3, the mounting bar (horizontal) 4 and the fixed bar (lower) 5, and is securely mounted on the main body 1. The mounting bar (upper) 3 is restricted from moving by the mounting bar (horizontal) 4, and the mounting bar (horizontal) 4 is restricted from moving by the fixed bar (lower) 5, and the fixed bar (lower) 5 is fixed to the main body 1 and the screen is fixed. 2 does not come off the body 1 more easily.
In addition, since the screw 6 for fixing the fixing bar (lower) 5 is attached from below the main body 1, it is not visible from the front surface.
The appearance is not impaired.

[0011]

As described above, according to the screen mounting apparatus of the projection type television receiver of the present invention, the image from the cathode ray tube is connected to the main body containing the cathode ray tube, the optical components and the electric circuit inside. A screen to image
By comprising a mounting bar having a hook portion engaged with a hole provided in the main body, and a fixed bar having a hole for fixing the mounting bar to the main body to prevent the mounting bar from falling off the main body, The screen of the projection type television receiver can be easily attached and detached, and the joint width can be reduced. Further, the configuration of the multi-screen device in which the projection television receivers are arranged in a matrix is facilitated, and the effective display screen is enlarged.

[Brief description of the drawings]

1A is an external perspective view of a screen mounting device of a projection television receiver according to an embodiment of the present invention. FIG. 1B is an exploded perspective view of a main part of FIG.

2A is a sectional view of an essential part for explaining an attaching operation of an attaching bar (upper) in FIG. 1; FIG. 2B is a sectional view of a principal part for explaining an attaching operation of an attaching bar (upper) in FIG. 1; 1 is a sectional view of an essential part for explaining the mounting operation of the mounting bar (upper) in FIG.

3A is a cross-sectional view of a main part illustrating the mounting operation of the mounting bar (horizontal) in FIG. 1 (B); FIG. 3B is a cross-sectional view of a main part illustrating the mounting operation of the mounting bar (horizontal) in FIG. 1 is a sectional view of an essential part for explaining the mounting operation of the mounting bar (horizontal) in FIG.

4A is a cross-sectional view of a main part illustrating the mounting operation of the mounting bar (lower) in FIG. 1; FIG. 4B is a cross-sectional view of a main part illustrating the mounting operation of the mounting bar (lower) in FIG. 1 is a sectional view of an essential part for explaining the mounting operation of the mounting bar (lower) in FIG.

FIG. 5 is an external perspective view of a conventional screen mounting device of a projection television receiver.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body 1A hole 1B hole 1C hole 1D hole 1E hole 2 Screen 3 Mounting bar (upper) 3A claw 4 Mounting bar (horizontal) 4A claw 5 Fixed bar (lower) 6 Screw

Claims (1)

(57) [Claims] 1. A cathode ray tube, an optical component, and an electric circuit are housed therein , and projection from the cathode ray tube is made to a front opening.
A transmission screen on which a photographed image is formed by the optical component.
Cabinet book with recess formed to fit lean
Body and a state where the screen is fitted in the recess
Each to fix the top, bottom, left and right surroundings of the screen
It has four mounting bars of upper, lower, left and right each having an L-shaped cross section.
The screen surface of the part mounting bar and the two left and right lateral mounting bars
If multiple key-shaped claws are arranged on orthogonal surfaces,
The recess is formed in the front opening of the cabinet body.
An opening is provided in which a hook is inserted and fitted.
With the clean fitted, the upper mounting bar
Open the hook on the upper end of the cabinet
After being inserted and fitted into the holes, the left and right
The left and right hooks provided on the cabinet body
The edges of the two left and right horizontal mounting bars are in front of the horizontal opening.
Insert and fit so that they contact the edges of the upper mounting bar
And the edge of the lower mounting bar is
Inserted and fitted so as to abut the edges of the attached bar
Then, screw the lower mounting bar onto the cabinet body with screws.
And the lower mounting bar is connected to the cabinet.
The only screw fixing bar when fixing the screen to the main body
So as screen attachment devices of the projection type television receiver, characterized in that the.