JP2890677B2 - Display element - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display element forming a pixel of a large-sized display device.

[Conventional technology]

2. Description of the Related Art Conventionally, a large-sized display device used for displaying a score or a player name in a sports stadium or for displaying time, temperature, and the like provided on an outer wall of a building or the like has been known. Each pixel of this type of display device is constituted by display elements independent of each other.

As the display element, for example, those disclosed in Japanese Utility Model Publication No. Sho 59-43586 and Japanese Patent Publication No. Sho 55-134887 are known. These display elements are provided with electromagnetic driving means having a frame that swings like a pendulum, and are configured so that the display plate slides through a complicated link mechanism that constitutes a so-called Scott Russell mechanism together with the display plate. I have.

By the way, in many cases, these display elements are configured by disposing a display unit in a case having at least a front surface having a transparent flat portion, and the front transparent surface portion is parallel to the case bottom surface. .

In addition, the display element mounting surface of a large display device, which is an aggregate of these display elements, is generally provided so that the bottom surface of the case of the display element is vertical, and the front surface of the display element is provided. The transparent plane also has a vertical plane.

[Problems to be solved by the invention]

Therefore, when this display element is used for an outdoor large scoreboard or the like, sunlight or light from an illuminating lamp is reflected by a transparent flat surface portion in front of the display element, and the reflected light is easily directed to a viewer. However, even in the non-display state, a failure such as the appearance of the display state or the inability to confirm the display state is likely to occur.

Conventionally, in order to prevent this, it has been attempted to make the surface of the transparent flat portion on the front surface of the display element uneven and to prevent irregular reflection, but when the ratio of irregular reflection is increased, the surface is whitened and the transparency is reduced. In addition, there is a problem that it is difficult to determine the display state and the non-display state.

The present invention has been made in order to improve the above-mentioned problems, and an object of the present invention is to make it difficult for reflected light of a light source such as the sun or an illumination lamp to go toward a viewer, and to display the light when the display state is displayed. An object of the present invention is to provide a display element in which a plate is easily visible.

[Means for solving the problem]

The present invention solves the above problems by providing a display unit having a display plate that rises and falls between a display state position substantially parallel to the bottom surface of the case and a non-display state position substantially perpendicular to the bottom surface of the case. Wherein the display plate of the display unit has a rotation axis parallel to the bottom surface of the case, and the case is a case where a front part of the display plate in a display state is a transparent cover and a rear part is opaque. In the display element which is the main body, a plane portion constituting the transparent cover facing the display plate in a display state is not parallel to the bottom surface of the case, but has an angle. Yes,
Further, the flat part of the transparent cover is configured to be parallel to the rotation axis of the display panel, and further, a positioning part for connecting the transparent cover and the case body is provided in a connecting part. It is a feature.

[Action]

According to the invention, since the flat portion formed on the transparent cover facing the display plate in the display state is not parallel to the bottom surface of the case but has an angle, the flat portion is determined by the position of the display element and the position of the light source. The direction of the reflected light that is coming can be a direction that does not hinder the viewer, and the flat part formed on the transparent cover facing the display plate in the display state is in the case body of the display element, Can be combined.

〔Example〕

1 and 2 show a state where the display unit 1 is housed in a case 2, and FIG. 3 shows a state where the case 2 is removed.

The display unit 1 is, as shown in FIGS. 1 and 3,
A bar-shaped iron core 12 is provided upright on a base 11 made of a synthetic resin. A coil 14 is wound around a coil bobbin 13 formed integrally with the base 11 and through which the iron core 12 is inserted. Coil 14
Two windings are connected in series, or one winding is provided with a tap in the middle, and has three terminal wires. Each terminal wire is connected to three terminal pins 15 projecting from a surface of the base 11 opposite to the surface on which the iron core 12 is erected.

At the end different from the base 11 in the coil bobbin 13,
A substantially U-shaped bearing 16 is integrally formed as a connecting member. A bearing hole 16a is formed in each of the two leg pieces of the bearing 16, and the tip of the iron core 12 projects from the center of the horizontal piece of the bearing 16. The bearing hole 16a is provided at a position shifted from the center line of the iron core 12. A rotating shaft 18 provided on the back surface of the display plate 17 is inserted into the bearing hole 16a from the inside of the leg piece, and the display plate 17 is rotatably mounted on the iron core 12. The surface of the display plate 17 is printed or painted for display, or a sheet is attached. A pair of protruding sides 17a protrude from the rear surface of the display plate 17, and a rotating shaft 18 protrudes integrally from one side surface of each protruding side 17a. Further, a permanent magnet 19 magnetized in the thickness direction of the display panel 17 is provided between the two protruding sides 17a.

According to the above-described configuration, when one of the three terminal pins 15 is used as a common terminal, and the core 12 is energized in a direction to attract the permanent magnet 19 with one of the remaining terminals, the display panel
17 is substantially parallel to the tip surface of the iron core 12. At this time, when the back surface of the display plate 17 abuts on the front surface of the bearing 16, the rotation of the display plate 17 is regulated and the display state is established. Also,
The core 12 is a permanent magnet between the common terminal and the other terminal
When electricity is supplied in a direction to repel 19, the display plate 17 falls down to a position substantially perpendicular to the tip end surface of the iron core 12. At this time, when the back surface of the display plate 17 abuts on the upper surface of the bearing 16, the rotation of the display plate 17 is restricted and the display plate 17 enters a non-display state. Therefore, if the side (the left side in FIG. 1) in which the front end face of the iron core 12 is viewed from the front is set as the front, the surface of the display plate 17 can be seen or not seen from the front as the coil 14 is energized. In this way, the display state and the non-display state are switched.

The case 2 is formed by combining a rectangular tubular case body 21 having one opening and the other bottom closed, and a transparent cover 22 that covers the opening of the case body 21 in a closed manner. In the embodiment shown in (1), the plane portion of the transparent cover 22 facing the display plate 17 in the display state has 6 ° downward with respect to the bottom surface of the case body 21. FIG. 2 shows another embodiment, in which the plane portion of the transparent cover 22 facing the display plate 17 in the display state has 6 ° upward with respect to the bottom surface of the case body 21.

Meanwhile, the base 11 is fitted into a recess 23 provided on the inner side surface of the bottom wall of the case main body 21, and is fixed by a fixing screw 24 inserted from the outside of the case main body 21 through the bottom wall of the case main body 21. It is fixed to the main body 21. Further, a protruding base 25 having a cylindrical outer surface is formed at a portion surrounding the base 11 on the outer surface of the bottom wall of the case main body 21. The terminal pins 15 in the display unit 1 are drawn out of the case main body 21 through the distal end surface of the protruding base 25.

The case body 21 is formed of an opaque material.
Is formed so as to be positioned on substantially the same plane as the display plate 17 in the display state or on the side slightly closer to the iron core 12. In this way, the display panel 17 can be seen from the front as much as possible, but the back of the display panel 17 is not visible.

FIG. 4 is a perspective view showing a fitting relationship between the case body 21 and the transparent cover 22. In the example shown in FIG.
Concave portions 26 are provided above and below 21, and convex portions 27 are provided at positions corresponding to upper and lower portions of the transparent cover 22. That is, the concave portion 26 and the convex portion 27 are respectively provided in a part of the fitting portion between the case body 21 and the transparent cover 22.
The positioning is performed when the case body 21 and the transparent cover 22 are fitted.

By this positioning, the flat portion of the transparent cover 22 facing the display plate 17 in the display state can be definitely assembled in a desired direction with respect to the case body 21. For example, by providing concave portions on the upper and lower sides of the case main body 21 and providing convex portions on the upper portion of the transparent cover 22 at corresponding positions, the flat portion of the transparent cover 22 facing the display plate 17 in the display state is a The case body 21 and the transparent cover 22 can be connected only so as not to be parallel to the display panel but to be parallel to the rotation axis of the display panel and have a predetermined angle in the upward or downward direction.

Further, by providing a concave portion on the case main body 21 and a convex portion on the upper portion of the transparent cover 22 at a corresponding position, the flat portion of the transparent cover 22 facing the display plate 17 in the display state is a bottom surface of the case main body 21. The case body 21 and the transparent cover only parallel to the rotation axis of the display panel, not parallel to
22 can be combined.

Therefore, the shape of the opening surface of the case body 21 and the fitting surface of the transparent cover 22 are formed in a square shape, and the positioning at the time of fitting the case body 21 and the transparent cover 22 as described above is performed by the four sides of the square. The display plate of the transparent cover 22
A state in which the flat portion facing 17 faces four different directions that are not parallel to the bottom surface of the case body 21 can be created by the fitting direction. Therefore, after a display device configured as an aggregate of display elements independent of each other is installed in a sports stadium or the like, the transparent cover 22 is removed, the fitting direction is changed, and the display device is fitted again, so that the display device is transparent. The direction of the cover 22 can be changed and adjusted so that reflected light such as an illumination light does not hinder a viewer.

Meanwhile, when the display element configured as described above is fixed to the mounting plate 3, an annular waterproof packing 31 fitted around the projecting base 25 is used as shown in FIG. The waterproof packing 31 is formed by integrally forming an inner ring 32 that is in close contact with the protruding base 25 and an outer ring 33 that is formed so as to increase in diameter as the distance from the mounting plate 3 increases. The thickness of the waterproof packing 31 in the projecting direction of the projecting table 25 is set to be slightly larger than the projecting amount of the projecting table 25.

However, a mounting hole 34 is formed in the mounting plate 3 so that the terminal pins 15 and the fixing screws 24 are exposed, and the waterproof packing 31 is fitted around the protruding stand 25. When the mounting screw 35 is screwed into the front end surface of the pedestal 25 through the watertight seal 3, the waterproof packing 31 is compressed between the case body 21 and the mounting plate 3, and water infiltrates from the front side to the rear side of the mounting plate 3. Can be prevented.

〔The invention's effect〕

The display element of the present invention is as described above, and light reflected by a light source such as the sun or an illumination lamp on the front surface of the display element can be made less likely to obstruct a viewer. The display device configured as an assembly has the effect of providing a display element that can be easily viewed, and when the case body and the transparent cover are combined, the display plate is in a display state with respect to the case body. There is an advantage that the flat portion of the transparent cover facing the above can be definitely assembled and connected in a desired direction.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing one embodiment of the present invention, FIG. 2 is a cross-sectional view showing another embodiment, FIG. 3 is an exploded perspective view with a case removed, and FIG. FIG. 5 is a perspective view showing a fitting portion with a cover, and FIG. 5 is a perspective view showing a method of fixing a display element to a mounting plate. 1 display unit, 2 case, 17 display panel, 18
… Rotating shaft, 21… Case body, 22… Transparent cover.

Claims (3)

(57) [Claims] A display unit provided with a display plate which rises and falls between a display state position substantially parallel to a bottom surface of the case and a non-display state position substantially orthogonal to the bottom surface of the case; A display plate having a rotation axis parallel to the bottom surface of the case, wherein the case is a display element in which a front portion of the display plate in a display state is a transparent cover and a rear portion is an opaque case body; A display element, wherein a plane portion constituting the transparent cover facing the display plate in a state is not parallel to the bottom surface of the case but has an angle. 2. The display device according to claim 1, wherein a plane portion of the transparent cover is parallel to a rotation axis of the display panel. 3. The display device according to claim 1, wherein a positioning portion for connecting the transparent cover and the case body is provided on the connection portion.