JPH03211587A - Liquid crystal display unit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a mounting structure for a liquid crystal panel, a backlight unit, and a circuit board in a liquid crystal display unit;
The present invention also relates to a mounting structure for a metal case and a cover.

[Prior Art] A conventional liquid crystal display unit is a liquid crystal television set.

There are many uses for liquid crystal displays, and there is a need to incorporate them into various devices to create composite products, and for this purpose, they must be small and compact, and must be easy to install, maintain, and inspect.

Furthermore, when electrically integrated into other equipment, there is a risk that interference from the equipment and interference from the display will adversely affect each other.

Therefore, an electrical shielding structure is required.

[III to be Solved by the Invention] The above-mentioned prior art does not take into consideration the ease of maintenance and inspection of the liquid crystal display panel and backlight unit, and the ease of installation to other equipment. There was good luck in using it for specific tasks.

An object of the present invention is to facilitate maintenance and inspection of liquid crystal display panels and backlight units.

Another object of the invention is to facilitate attachment to other equipment.

[Means for deciding the fate of the lesson] In order to achieve the above object, a structure is adopted in which a liquid crystal display panel is attached to the front surface of a metal case, and a backlight unit is attached to the back surface.

Further, in order to attach it to other equipment, a screw hole for attachment is provided in the metal case, making it easy to attach it to other equipment directly or via a mounting bracket.

Electrically, stable performance can be maintained by making the case and cover made of metal and creating a shield structure that prevents interference radio waves from leaking and jumping in.

[Function] A hole for attaching a liquid crystal display panel is provided on the front surface of the metal case, and a hole for attaching a bank light unit is provided on the back surface. For this reason, the liquid crystal display panel is made by removing the edge from the surface of the metal case.

It can only be removed directly. Further, the backlight unit can be directly removed from the back surface of the metal case by unfitting the metal cover. Furthermore, by using a hinge structure to attach the metal case and metal cover, the backlight unit can be removed with the metal cover attached by removing the screws on the opposite side of the hinge.

Further, by providing a screw hole for attachment in the metal case, it becomes possible to attach it to other equipment via screws.

[Example 1] An example of the present invention will be described below with reference to FIG. 1st
The figure is an exploded view of the liquid crystal display unit, in order from the top of the liquid crystal display unit: liquid crystal display panel 1, metal case 4. It is composed of a backlight unit 21, a circuit board 3, and a metal cover 5. The liquid crystal display panel 1 and the backlight unit 2 can be fixed with screws from the front and back sides of the metal case 4, respectively.

Further, the backlight unit 2 includes a fluorescent tube 2a1 and a reflection plate 2.
b, drive circuit J12 c, and circuit board 3
The reflector plate 2b reflects the light from the fluorescent tube 2a, and the metal case. Light is irradiated onto the liquid crystal display panel 1 from the back surface of the liquid crystal display panel 4 to brighten the liquid crystal display panel 1. Power for the liquid crystal display panel 1 is supplied from a circuit board 3. The circuit board 3 is fixed to the back surface 12 of a metal cover 5 by screws. A metal case 4 to which a liquid crystal display panel 1 and a backlight unit 2 are screwed, and a metal cover 5 to which a circuit board 3 is screwed.
According to this embodiment, the liquid crystal display unit can be operated by fitting and fixing the
This has the effect of facilitating maintenance and inspection of the liquid crystal display panel 1 and backlight unit 2.

Next, an embodiment of the present invention will be described with reference to FIG. Second
The figure shows a metal case 4 with screw holes 4a. The screw hole 4a is provided so that when attaching the metal case 4 to another device 6, it will be in the same position as the screw 6a of the other device. According to this embodiment, which allows devices to be easily fixed with screws, it is possible to easily attach the device to other devices.

Next, one embodiment of the present invention will be described with reference to FIG.

FIG. 3 is a diagram in which the mounting bracket 7 is attached and fixed to the metal case 4 with screws 8. According to this embodiment, the metal case 4 can be screwed and fixed to a wall surface through the screw holes 7a of the mounting bracket 7, making it easy to attach the liquid crystal display unit to the wall surface.

Next, an embodiment of the present invention will be described with reference to FIG. Fourth
The figure shows a metal case 4 and a metal cover 5 fixed at the upper end with screws and fixed at the lower end with a hinge 8. By removing the screw from the screw hole 4a of the metal case 4, the gold JEI
l The cover 5 is opened by turning half a turn, and the metal case 4 opens.
The backlight unit 2 can be removed while the metal cover 5 remains attached to the backlight unit 2. Moreover, since the 1 circuit board 3 is screwed to the metal cover 5, the board IiM,
According to this embodiment, repair work can be easily performed, such as removing the backlight unit 2 and removing the circuit board 3! I
II! , repair work can be done easily.

[Effects of the Invention] According to the present invention, nine maintenance inspections of the liquid crystal display panel and the backlight unit are facilitated, thereby reducing the time required for one maintenance inspection and improving reliability.

This has the effect of extending the life of the liquid crystal display unit.

Furthermore, since it can be easily attached to other equipment, there is also the effect of shortening the time required for attachment work and reducing the need for attachment aids.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a liquid crystal display unit according to an embodiment of the present invention, and FIG. 2 is a perspective view of a metal case constituting an eleventh liquid crystal display unit. FIG. 3 is a perspective view of an embodiment of the liquid crystal display unit shown in FIG. 2, in which a mounting bracket is screwed to a metal case. FIG. 4 is a perspective view of a liquid crystal display unit according to an embodiment of the present invention, in which a metal case and a metal cover are attached using hinges and screws. Explanation of symbols 1...Liquid crystal display panel, 2...Backlight unit, 2a...Fluorescent tube, 2b...Reflector, 2G...
Drive circuit, 3... Circuit board, 4... Metal case,
4a...Screw hole, 5...Metal cover, 6...Other equipment, 7...Mounting bracket, 8...Hinge.

Claims (1)

[Scope of Claims] 1. In a liquid crystal display unit consisting of a backlight unit and a circuit board comprising a liquid crystal panel, a fluorescent tube, a reflector, and a drive circuit, a metal case having an opening in the liquid crystal display part is provided. A liquid crystal display characterized in that a liquid crystal panel is attached to the front surface, a backlight is attached to the back surface of the case, the circuit board is attached to a metal cover, and the metal case and the cover are fitted and fixed. unit. 2. The liquid crystal display unit according to claim 1, wherein the metal case is provided with screw holes for attachment to other equipment. 3. In claim 1, the metal case and the metal cover are attached by a mechanism in which the lower end is rotatable and the upper part is screwed, so that when the upper screw is removed and the cover is turned half a turn, the circuit is removed. A liquid crystal display unit characterized in that the substrate and the backlight unit are configured to be exposed.