JPH09200655A - Fixing device for display unit - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To provide a device which is easy to attach and detach a display unit and is inexpensive. A display unit is provided with a frame that locks protrusions provided at the upper and left two corners of the display unit, and a chassis that locks protrusions provided at the lower left and right two corners of the display unit,
The display unit is fixed by fixing the frame and the chassis.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing device for a display unit such as a cathode ray tube unit.

[0002]

2. Description of the Related Art Generally, a display unit such as a cathode ray tube unit or a liquid crystal panel unit is fixed to a housing with screws. For example, in a cathode ray tube unit, 4 of the explosion-proof band wrapped around the outer circumference of the tube body.
The Braun tube unit is fixed to the Braun tube mount by providing a mounting bracket with a hole in the corner, passing a screw (male screw) through the hole of this bracket, and screwing the screw into the female screw part provided on the Braun tube mount. I was trying to do it. As an example of this kind, Japanese Patent Application Laid-Open No. 2-1947
The cathode ray tube mounting device disclosed in Japanese Patent No. 82 is cited.

[0003]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Laid-Open Publication No. 2-1
In the prior application technology disclosed in Japanese Patent No. 94782, it is necessary to screw the respective screws at the four corners of the display unit in order to mount the cathode ray tube unit (display unit), and the outer diameter of the mounting screw and the mounting Since there is a clearance in the inner diameter of the through hole of the metal fitting, a large tightening force is required and the diameter of the screw becomes large.Furthermore, in order to prevent the screw fastening part from loosening due to vibration during transportation etc. I coped by increasing the number. For this reason, the work of tightening each screw itself is troublesome, and the number of places where the screws are attached is relatively large, which has been an obstacle to reducing the manufacturing cost. Further, the removal and installation work of the display unit at the time of maintenance are also complicated. Furthermore, in the case where the mounting base of the display unit is also used as a design part such as a plastic frame, in order to make the mounting part of the screw large and rigid, it is necessary to provide a strengthened part such as a rib. Therefore, it takes time and labor for manufacturing the molding die, which is also a factor for increasing the manufacturing cost.

The present invention has been made in view of the above points,
It is an object of the present invention to provide a display unit fixing device which can easily attach and detach the display unit and can reduce the cost.

[0005]

In order to achieve the above-mentioned object, a display unit fixing device according to the present invention comprises a display unit, for example, a frame having projections provided at the upper left and right two corners, and a display unit. , A chassis having protrusions provided at two lower left and right corners is fixed, and the display unit is fixed by fixing the frame and the chassis by screwing at two places, for example. Further, the center of gravity of the display unit is located within the depth dimension of the frame. Also, the chassis and frame are extended rearward to enhance the electromagnetic shield effect.

[0006]

Embodiments of the present invention will be described below. 1 is a front view of a fixing device for a display unit according to a first embodiment of the present invention, FIG. 2 is a side view of a fixing device for a display unit according to the first embodiment of the present invention, and FIG. It is an enlarged view of the A section of 1.

1 to 3, reference numeral 1 denotes a cathode ray tube unit (display unit), which includes a tube body 2, a band 3, a fixing metal piece 4, a DY (deflection yoke) 20, and the like. The explosion-proof band 3 is wound around the outer periphery of the tube body 2 with a predetermined tightening force, and is integrated with the tube body 2 by a known appropriate fixing means. A fixing metal fitting 4 having four holes is fixedly provided at a predetermined position of the band 3, and when the band 3 is wound around the pipe body 2, each fixing metal fitting 4 has four corners (that is, It is designed to project outward from the four corners of the outer shape of the cathode ray tube unit 1. The cathode ray tube display unit 1 of this example having such a configuration is equivalent to a conventional cathode ray tube unit, and it is not necessary to change the conventional cathode ray tube unit in order to implement the present invention.

Further, 10 is a metal chassis, 11 is a cathode ray tube support portion provided on the upper surface of the bottom plate portion of the chassis 10,
15 is a leg portion provided on the lower surface of the bottom plate portion of the chassis 10;
Is a metal frame, and 14 is a slit formed in the chassis 10 and the frame 13. Each slit 1
4 is formed at a position corresponding to each of the above-mentioned fixing fittings 4, and is set to a size such that the fixing fitting 4 can be fitted and locked. Reference numeral 25 is a set screw for connecting and fixing the chassis 10 and the frame 13.

The housing 17 is shown by a chain double-dashed line in FIGS. 1 to 3, and the housing 17 is
It constitutes an outer casing body of a display device (here, a television receiver).

In the construction shown in FIGS. 1 to 3, the chassis 10 is positioned and fixed to the housing 17 by appropriate means, and the two metal fittings 4 at the lower left and right corners of the cathode ray tube unit 1 are fitted into the two slits 14 of the chassis 10. Is inserted to a predetermined position, and thereby the cathode ray tube unit 1 is positioned with respect to the chassis 10 (that is, the main body of the display device). Further, a frame 13 is covered on the upper side of the cathode ray tube unit 1, and the fixing metal fittings 4 at the upper left and right corners of the cathode ray tube unit 1 are fitted to predetermined positions in the two slits 14 of the frame 13. The chassis 10 and the frame 13 are joined and fixed to the left and right by one set screw 25, respectively, whereby the cathode ray tube unit 1 is reliably positioned and fixed to the main body of the display device. .

In FIG. 2, reference numeral G indicates the center of gravity of the cathode ray tube unit 1, and in this example, the center of gravity G of the cathode ray tube unit 1 is positioned within the depth dimension of the frame 13. With such a configuration, gravity due to the weight of the cathode ray tube unit 1 can be supported by the joint surface between the frame 13 and the chassis 10,
Therefore, a large moment does not act on the set screw 25 even during transportation, and the number of the set screw 25 can be reduced to two, and the size of the set screw 25 can be reduced.

In general, in this example, the trouble of screwing work can be reduced, and the installation and removal of the cathode ray tube unit can be simplified and facilitated, which greatly contributes to cost reduction.

In this example, in the frame 13,
Since the cathode ray tube support portion 11 for supporting the bottom surface portion of the cathode ray tube unit 1 is provided, the cathode ray tube unit 1 can be held more stably. Of course, if needed,
It is possible to provide the frame 13 or the chassis 10 with a cathode ray tube support portion that supports the side surface portion of the cathode ray tube unit 1, or to provide the frame 13 with a cathode ray tube support portion that presses the upper surface portion of the cathode ray tube unit 1.
Further, the CRT unit 1 can be held more stably.

Further, the total length of the frame 13 is set in consideration of the elastic deformation amount, and the CRT unit 1 is tightened by the elastic force of the elastic deformation of the frame 13 when the frame 13 is coupled to the chassis 10. In such a case, the CRT unit 1 can be held more stably.

FIG. 4 is a front view of a main part of a fixing device for a display unit according to a second embodiment of the present invention, and is an enlarged view of a part corresponding to the above-mentioned section A in FIG. Note that, in FIG. 4, the same reference numerals are given to the components equivalent to those of the previous embodiment (the same applies to each of the following embodiments). The present example is different from the first embodiment described above in the insertion direction of the set screw 25. That is,
In the first embodiment, the set screw 25 is inserted vertically as shown in FIG. 3 in consideration of productivity. However, in the present embodiment, the set screw 25 is inserted in the vertical direction. As shown in FIG. 4, it is in the lateral direction. In this example having such a configuration, the lateral width of the housing 17 can be shortened.

FIG. 5 is a side view of a display unit fixing device according to a third embodiment of the present invention. This example is different from the first and second example embodiments described above in the length of the frame in the depth direction. That is, in this example, as shown in FIG. 5, the length of the frame 13 ′ in the depth direction is set to be the same as the length of the chassis 10 (a length slightly shorter than the total length of the display device in the depth direction). And chassis 10
The point is that it has the function of an electromagnetic shield plate that covers the upper and lower surfaces and both side surfaces of the built-in circuit element of the display device. The chassis 10 (and the frame 13) is connected to the ground electrodes of electronic and electric components in the display device. In this example having such a configuration, the electromagnetic shield effect of the display device can be enhanced.

FIG. 6 is a perspective view of a display unit fixing device according to a fourth embodiment of the present invention, and FIG.
It is sectional drawing which followed the -B line. 6 and 7, 5
1 is an upper housing which is a part of the outer casing of the display device, 52 is a lower housing which is a part of the outer casing of the display device, and 55 is a front panel which is a part of the outer casing of the display device. 56 is a decorative screw, and 58 is a corner frame fixed to the upper housing 51 and the lower housing 52.

The configuration of the cathode ray tube unit 1 in this example is also the same as that of each of the above-described embodiments. Figure 7
As shown in FIG. 4, corner frames 58 are fixed to the front left and right inner corners of the upper housing 51 and the lower housing 52, which are made of metal, by means of welding or the like. Slits (not shown) into which the above-mentioned four fixing fittings 4 of the unit 1 are fitted are formed.

In the present embodiment, the fixing fittings 4 at the lower left and right corners of the cathode ray tube unit 1 are fitted to predetermined positions in the slits formed in the left and right corner frames 58 of the lower housing 52, and the cathode ray tube unit 1 is moved to the lower housing 52. (That is, the main body of the display device) is positioned. The upper housing 51 is covered on the upper side of the cathode ray tube unit 1, and the fixing brackets 4 at the upper left and right corners of the cathode ray tube unit 1 are fitted to predetermined positions in slits formed in the left and right corner frames 58 of the upper housing 51. It Then, the end portions of the upper housing 51 and the lower housing 52 are connected to each other with a decorative screw 56.
By fixing, the cathode ray tube unit 1 is reliably positioned and fixed to the main body of the display device. The front surface of the display device (here, a television receiver) is covered with a front panel 55 except for the image display surface, and the back surface is covered with a back panel (not shown).

In this example having such a structure, the upper housing 51 and the lower housing 52 have a function of fixing the cathode ray tube unit, a function as an outer casing body (exterior material), and a function as a shield case. It is also possible to reduce the number of mechanical members of the display device, thereby achieving a significant cost reduction.
Moreover, the installation and removal of the CRT unit is easy.
It will be easier.

[0021]

As described above, according to the present invention, it is easy to attach and detach a display unit such as a cathode ray tube unit.
It is easy and the number of set screws can be reduced.
Assembly cost can be reduced. Furthermore, the mounting portion of the display unit can be shared as the chassis, the shield case, and the outer casing, and the number of mechanical members of the display device can be significantly reduced, resulting in a significant cost reduction.

[Brief description of drawings]

FIG. 1 is a front view of a fixing device for a display unit according to a first exemplary embodiment of the present invention.

FIG. 2 is a side view of the display unit fixing device according to the first exemplary embodiment of the present invention.

FIG. 3 is an enlarged view of a portion A in FIG. 1;

FIG. 4 is a front view of a main portion of a display unit fixing device according to a second embodiment of the present invention.

FIG. 5 is a side view of a display unit fixing device according to a third embodiment of the present invention.

FIG. 6 is a perspective view of a display unit fixing device according to a fourth exemplary embodiment of the present invention.

FIG. 7 is a sectional view taken along the line BB of FIG. 6;

[Explanation of symbols]

 1 Braun tube unit (display unit) 2 Tube body 3 Band 4 Fixing bracket 10 Chassis 13, 13 'frame 14 Slit 17 Housing 25 Set screw 51 Upper housing 52 Lower housing 56 Cosmetic screw 58 Corner frame

Claims (6)

[Claims] 1. A display unit comprising: a frame in which a part of a corner of the outer shape of a display unit is locked; and a chassis in which the rest of a corner of the outer shape of the display unit is locked, and the frame and the chassis are fixed to each other. The display unit fixing device is characterized in that the display unit is fixed by doing so. 2. The display unit according to claim 1, wherein the frame and the chassis are formed with slits into which projections provided at four corners of the outer shape of the display unit are respectively fitted. Fixing device. 3. The display unit fixing device according to claim 1, wherein the center of gravity of the display unit is located within a depth dimension of the frame. 4. The display unit fixing device according to claim 1, wherein the chassis or the frame extends rearward and doubles as an electromagnetic shield plate. 5. An upper housing which constitutes a part of an outer casing body of the display device and locks a part of a corner of the outer shape of the display unit, and a part of the outer casing casing body of the display device. Together with a lower housing that locks the rest of the corners of the outer shape of the display unit, by fixing the upper housing and the lower housing,
A display unit fixing device for fixing the display unit. 6. The display according to claim 5, wherein the upper housing and the lower housing are formed with slits into which projections provided at four corners of the outer shape of the display unit are respectively fitted. Fixing device for the unit.