JPH04136976A - Mounting device for light shielding plate for large-sized video display device - Google Patents

Abstract

PURPOSE:To allow mounting of light shielding plates which can be attached and detached by elastic deformation in a narrow mounting space and to allow the high- density packaging of light emitting elements by mounting the light shielding plates to bases between the plural light emitting elements. CONSTITUTION:A video display unit 1 is provided with the plural light emitting element mounting bases 3 on the front surface of a unit case 2 and the plural light emitting elements 4 are mounted vertically and horizontally in a plane shape on the front sides of the respective light emitting element mounting bases 3. Bosses 5 are projectingly provided by utilizing the recessed parts on the base end side of the light emitting elements 4 between the upper and lower light emitting elements 4 and 4 and the base parts of planar engaging pieces 6 are mounted by screws 7 to the respective bosses 5. The connecting members 10 of the light shielding plates 9 are inserted between the light emitting elements 4 and 4 in the transverse direction and notches 13 for guiding are engaged with the sloped parts on the front end side of the engaging projections 8 of the engaging pieces 6. Engaging holes 12 are engaged with the engaging projections 8 by the recovering elasticity of the engaging pieces 11 if the light shielding plates 9 are thereafter pressed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention prevents external light such as sunlight from entering the display screen of large-sized video display devices used indoors and outdoors, and improves image quality due to external light. The present invention relates to a mounting device for a light shielding plate for a large-sized video display device used to prevent deterioration.

BACKGROUND OF THE INVENTION FIG. 9 is a perspective view of a large-sized video display device. In FIG. 9, 101 is the main body of the display device, 102 is a video display unit, and a large number of these units are arranged vertically and horizontally to form a screen.

10 to 12 show the video display unit 102.
FIG. 10 is a perspective view, and FIGS. 11 and 12 are a perspective view and a side view for explaining the operation of attaching the light shielding plate. In FIG. 10, reference numeral 103 denotes a light emitting element, which is formed into a cylindrical shape and arranged in large numbers in a planar manner vertically and horizontally. Reference numeral 104 denotes a light-shielding plate arranged to block the upper and lower light-emitting elements 103 arranged in the horizontal direction, and is shown in FIGS. 11 and 12.
As shown in the figure, attach the mounting pieces 1 in the vertical direction to multiple locations on the base.
05 are consecutively provided. Each mounting piece 105 is formed so that the width gradually becomes narrower from the base side to the tip side,
A mounting hole 106 is formed. On the other hand, each mounting piece 105
Support pieces 108 having a similar shape are provided on the base 107 of the video display unit 102 between the light emitting elements 103 in the horizontal direction, and each support piece 108 has a tapped hole 109 formed therein.

Then, the light shielding plate 104 is inserted so as to block the space between the light emitting elements 103 below, and the screws 110 are screwed into the screw holes 109 of the support piece 108 through the mounting holes 106 of the mounting piece 105. Or installed.

Problems to be Solved by the Invention In recent years, in large-scale video display devices, the front shape of the light emitting elements has been changed from circular to rectangular in order to improve the image quality by increasing the light emitting area ratio. As devices become smaller, the mounting space for the light shielding plate is also becoming narrower. However, in the configuration of the conventional example, the mounting piece 10 of the light shielding plate 104 is
5 is formed into a substantially inverted triangular shape whose width gradually becomes narrower from the base side to the distal end side so that it can be inserted between the light emitting elements 103. Therefore, the second requirement cannot be met. In addition, a tool such as a screwdriver is required to attach and remove the light shielding plate, and since it is time-consuming to attach and remove the light-shielding plate, it is troublesome to replace the light-emitting elements.

The present invention solves the problems of the prior art as described above, and allows a light shielding plate to be installed in a narrow installation space. Therefore, it is applicable to high-density mounting of light emitting elements with a rectangular front shape. A light-shielding plate for a large-sized video display device that can easily attach and remove the light-shielding plate, thereby making it possible to easily and quickly replace light-emitting elements. The object is to provide a mounting device.

Means for Solving the Problems In order to achieve the above object, the present invention provides a base, a large number of light emitting elements arranged in a plane on the base, each having a frontal shape or a rectangular shape, and a light emitting element arranged on the base between the light emitting elements. A plate-shaped engagement piece that is attached and has an engagement portion, a plurality of light-shielding plates that prevent external light from entering the light-emitting element, a connecting member that connects the light-shielding plates, and a plate-shaped engagement piece of the connecting member. The engaging portion is formed on the engaging piece and includes an engaging portion that can be engaged with or disengaged from the engaging portion of the engaging piece on the base side by utilizing elastic deformation.

Therefore, according to the present invention, the engagement part of the plate-shaped engagement piece of the connecting member connecting the light-shielding plate is connected to the engagement part of the plate-shaped engagement piece attached to the base between the light emitting elements. By using deformation, the light shielding plate can be installed in a position that prevents external light from entering the light emitting element, or the engaging part of the engaging piece of the connecting member can be elastically moved from the engaging part of the engaging piece on the base side. By utilizing deformation, it can be separated and the light shielding plate can be removed.

EXAMPLES Hereinafter, examples of the present invention will be described with reference to the drawings.

1 to 8 show a mounting device for a light-shielding plate for a large-sized video display device according to an embodiment of the present invention, in which FIG. 1 is a schematic perspective view, FIG. 2 is an enlarged side view of main parts, and FIG. 4 is a perspective view of the light shielding plate, Figure 5 is a perspective view of the light emitting element mounting base, and Figure 6 is for explaining the positional relationship between the light emitting element and the engaging piece for attaching the light shielding plate. The perspective view, FIGS. 7 and 8 are an enlarged side view and a partially cutaway enlarged plan view of essential parts for explaining the operation of attaching the light shielding plate.

As shown in FIGS. 1 to 3, a video display unit 1
A plurality of light emitting element mounting bases 3 are provided on the front surface of the unit case 2, and a plurality of light emitting elements 4 are mounted on the front side of the base 3 in a planar manner vertically and horizontally. As shown in the figure, it is formed into a rectangular tube shape with a rectangular front shape. A gap is formed between the upper and lower light emitting elements 4.4, and a gap is formed between the left and right light emitting elements 4.4. As shown in FIGS. 5 and 6, upper and lower light emitting elements 4.4 are attached to the front four corners of each light emitting element mounting base 4.
A boss 5 is protruded between the light emitting elements 4 by using a recess on the proximal end thereof, and the base of a plate-shaped engagement piece 6 is attached to each boss 5 with a screw 7. Upper and lower light emitting elements 4.4
It is placed in the gap between.

Each engagement piece 6 has an engagement protrusion 8 at its tip, and the left and right engagement protrusions 8 are directed inward to face each other, and gradually move outward as they reach the tip and rear ends from the center. The engagement protrusion 8 has an inclined portion that is inclined toward the opposite side, and the tip end of the engagement protrusion 8 between the inclined portions is disposed in the gap between the light emitting elements 4.4 adjacent in the left and right direction.

As is clear from FIGS. 2 to 4, the light shielding plates 9 are arranged in multiple stages in the horizontal direction so as to be located above the light emitting elements 4 in each row attached to each light emitting element mounting base 3. The back surfaces of the two are connected by a vertical leaf spring-like connecting member 10 to form a unit. Each connecting member 10 has plate-shaped engaging pieces 11 that protrude rearward at three upper and lower locations, and the engaging pieces 11 engage with the engaging protrusions 8 of the engaging pieces 6 by utilizing their own elastic deformation. , or an engaging hole 12 that can be detached is formed. A guide notch 1 is provided at the rear of each engagement hole 11.
3 is formed, and each guide notch 13 is formed so as to gradually expand in the vertical direction as it reaches the open rear end side (see FIG. 7).

In the above configuration, the operation of attaching and detaching the light shielding plate will be explained below.

As shown in FIGS. 7 and 8, the connecting member 10 of the light shielding plate 9 is inserted between the light emitting elements 4. Engage with the slope. Thereafter, by pressing the light shielding plate 9, the engagement piece 11 of the connecting member 10 is elastically deformed, the guide notch 13 is guided by the inclined part of the engagement protrusion 8, and then the guide notch 1
3 moves over and passes over the tip of the engagement protrusion 8, the restoring elasticity of the engagement piece 11 causes the engagement hole 12 to move over the engagement protrusion 8.
engage with. In this way, the engaging hole 12 of the connecting member 10 is forcibly engaged with the engaging protrusion 8 of the engaging piece 6 attached to the light emitting element mounting base 3 by utilizing the elastic deformation of the engaging piece 11 of the connecting member 10. By matching them together, the light shielding plate 9 can be attached so as to be positioned above the light emitting elements 4 in each row, as shown in FIGS. 1 to 3.

On the other hand, by forcibly pulling the light shielding plate 9 forward, the edge of the engagement hole 12 of the engagement piece 11 of the connecting member 10 is deformed by the elastic deformation of the engagement piece 11. is guided by the rear inclined portion of the engagement protrusion 8, and eventually separates. therefore,
The light-emitting element 4 can be replaced by removing the light-shielding plate 9 and the connecting member 10. After replacement, the light shielding plate 9 can be attached in the same manner as above.

By the way, the engagement piece 6 on the base 3 side and the engagement 11 on the light shielding plate 9 side
By using the gap between the light emitting elements 4.4 to engage or disengage, the engaging protrusion and the engaging hole can be replaced. Furthermore, in the case where two colors are emitted above and below one light emitting element 4, a light shielding plate may be added so as to be located in the middle part of each light emitting element 4. In addition, various design changes can be made to the present invention without departing from its basic technical idea.

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, as described above, the engagement portion of the plate-shaped engagement piece of the connecting member connecting the light-shielding plate is connected between the light-emitting elements of the plate-shaped engagement piece attached to the base. The light-shielding plate can be engaged with the engaging portion by using elastic deformation, and the light shielding plate can be installed in a position where external light is prevented from entering the light emitting element, or the engaging portion of the engaging piece of the connecting member can be attached to the engaging piece of the base side. The light shielding plate can be removed by disengaging it from the engagement portion by utilizing elastic deformation. Therefore, the light shielding plate can be easily attached or removed without using a tool such as a screwdriver, and the light emitting element can be replaced easily and quickly. Also,
As described above, the light shielding plate can be attached or removed by engaging or disengaging the engaging portion of the engaging piece using the gap between the light emitting elements whose front side shape is rectangular. It can be applied to high-density mounting of rectangular light emitting elements.

[Brief explanation of drawings]

1 to 8 show a mounting device for a light-shielding plate for a large-sized video display device according to an embodiment of the present invention, in which FIG. 1 is a schematic perspective view, FIG. 2 is an enlarged side view of main parts, and FIG. 4 is a perspective view of the light shielding plate, FIG. 5 is a perspective view of the light emitting element mounting space, and Figure 6 is a perspective view for explaining the positional relationship between the light emitting element and the support for the light shielding plate. , FIGS. 7 and 8 are an enlarged side view and a partially cutaway enlarged plan view of the main parts for explaining the mounting operation of the light shielding plate, FIG. 9 is a perspective view showing a large-sized image display device, and FIGS. 10 to 12 The figures show a conventional mounting device for a light-shielding plate for a large-sized video display device.
1 and 12 are a perspective view and a side view for explaining the operation of attaching the light shielding plate. 1... Video display unit, 2... Unit case,
3... Pace, 4... Light emitting element, 6... Engaging piece,
8... Engaging projection, 9... Light shielding plate, 10... Connecting member, 11... Engaging piece, 12... Engaging hole. Name of agent: Patent attorney Akira Kokaji and two others Figure 10 Figure 11 Figure 12

Claims (1)

[Claims] a base; a large number of light emitting elements arranged in a planar manner on the base and having a rectangular front shape; a plate-shaped engagement piece attached to the base between the light emitting elements and having an engaging portion; a plurality of light-shielding plates that prevent external light from entering the light-shielding plate; a connecting member that connects the light-shielding plates; and a plate-shaped engaging piece of the connecting member that is formed on the engaging portion of the base-side engaging piece. A mounting device for a light shielding plate for a large image display device, comprising an engaging portion that can be engaged or disengaged by utilizing elastic deformation.