JPH07168534A - Display device - Google Patents

Abstract

PURPOSE:To increase the density of display and to make contrast higher and size and weight smaller by shortening the moving distance of a display member. CONSTITUTION:This display device is composed of a base frame 13 which is arrayed longitudinally and transversely and formed with plural recesses 12 of the same size, the display member 14 which is formed as a display surface repetitively displaying plural colors at a prescribed width in a stripe form in a moving direction on the front surface side, is embedded with a magnet on the rear surface side and is disposed freely movably in the recesses at the width shorter by the prescribed width corresponding to the stripe width than the recesses of the base frame, an electromagnet 16 which controls the movement of the display member within the recesses by changing the polarities thereof and a window frame 15 which is arranged on the display surface side above the base frame and is provided with plural windows so as to display the same color as the color of the display surface of the display member on the outside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device in which a plurality of display elements are arranged vertically and horizontally in a matrix and the display form of each display element is changed to perform a desired display as a whole.

[0002]

2. Description of the Related Art Conventionally, as this type of display device, the one described in Japanese Patent Laid-Open No. 62-187879 is known.

As shown in FIG. 15 (a), each display element arranged in a matrix is provided with a cavity 2 in a storage portion 1 made of a non-magnetic material, and the cavity 2 is provided in the cavity 2. A movable piece 3 made of a magnetic material having a width half the width is movably provided, and a magnet 4 having a magnetic pole configuration of S, N, and S and having an E-shaped cross section is arranged close to one surface side of the storage portion 1.

When the control magnet 5 is brought close to the other surface of the storage section 1 with the magnetic pole shown in FIG. 15 (b), the movable piece 3 in the space 2 instantly moves from the left side to the right side in the figure, Further, when the control magnet 5 is brought close to the magnetic pole shown in FIG. 15 (c), the movable piece 3 in the space 2 instantly moves from the right side to the left side in the figure, thereby changing the display.

It is also disclosed that a magnet having a magnetic pole configuration of N, S, N can be used as the magnet 4 as shown in FIG. 15 (d).

[0006]

In this conventional device, the display cannot be changed unless the movable piece 3 in the space 2 moves by the length of the width of the movable piece, so that the area contributing to the display is the frame portion. If it is included, it will be less than half of the entire surface of the display element, and the remaining half or more will be an area that does not contribute to display. Therefore, when this display element is arranged in a matrix, it is actually displayed on the entire display surface of the display device. The density of the portion became coarse, it was not possible to achieve high density display, and the contrast was poor.

Further, since the moving distance of the movable piece is long, the magnets 4 and the control magnets 5 used for controlling the movement of the movable piece become large, and there is a problem that the whole becomes large and heavy.

Therefore, according to the present invention, the moving distance of the display member used for changing the display can be shortened, so that the density of the display can be increased and the contrast can be increased, and the size and weight of the display can be reduced as a whole. Provided is a display device capable of realizing the above.

[0009]

The invention according to claim 1 is
A base frame formed by arranging a plurality of rectangular-shaped recesses of the same size vertically and horizontally, and a front surface serving as a display surface on which a plurality of colors are repeatedly displayed in stripes with a predetermined width in the moving direction, and at least a part of the back surface is formed. A display member, which is made of a magnetic material magnetized to the N pole and the S pole, is movably provided in each recess of the base frame so as to be movable by shortening the recess width by a predetermined width corresponding to the stripe width. Electromagnetic means for controlling the movement of the display member in the recess by changing the polarity, and a plurality of predetermined widths are arranged on the upper display surface side of the base frame so that the same color of the display surface of the display member is externally displayed. And a window frame provided with a window.

According to the second aspect of the present invention, the base frame is formed by arranging a plurality of rectangular-shaped recesses of the same size in the vertical and horizontal directions, and a plurality of colors are repeatedly displayed in stripes on the surface side in the moving direction with a predetermined width. As a display surface, at least a part of the back side is made of a magnetic material magnetized to N pole and S pole, and is moved within each recess of the base frame with a predetermined width corresponding to the stripe width smaller than the recess width. Freely provided display members, electromagnetic means for controlling the movement of the individual display members in the recess by changing the polarity, and the same color of the display surface of the display member, which is arranged on the upper display surface side of the base frame. Is provided externally, and a lens array in which a plurality of condensing lens elements having a constant width are arranged side by side is provided.

[0011]

In the invention according to claim 1, the display member provided in each recess of the base frame is moved by the electromagnetic means provided individually by a width corresponding to the stripe width of the display surface. As a result, the color displayed externally from each window of the window frame changes, and the display is changed.

In the invention according to claim 2, the color displayed externally through each lens element of the lens array is changed and the display is changed by moving the display member.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a cross-sectional view of one of a plurality of display elements arranged vertically and horizontally in a matrix.
A base frame 13 in which a large number of square recesses 12 surrounded by 1 are arranged vertically and horizontally is provided, and a display member 14 is provided in each recess 12 of the base frame 13. As shown in FIG. 2 (b), the display member 14 has a display surface 14a in which, for example, white and black colors are alternately displayed in stripes with a predetermined width, as shown in FIG. The width of one stripe is made shorter than the width of the recess 12 of 13 so as to be movable in the left-right direction in the drawing.

The rear side of the display member 14 is shown in FIG.
As shown in (d), a rubber magnet 14b magnetized into N and S in the moving direction is embedded.

The width of the frame 11 of the base frame 13 in the moving direction of the display member is set to the width of the stripe.

A window frame 15 is arranged above the display surface side of the base frame 13. This window frame 15
2A, a plurality of windows 15a having sizes corresponding to the width and length of the stripe of the display surface 14a of the display member 14 are provided at intervals of the stripe width, as shown in FIG. The same black or white color on the display surface of 14 can be externally displayed. The window 15a may be a simple hole or a window made of a translucent member.

In the recess 12 of the base frame 13,
As shown in FIG. 2C, a black display area 13a having the same width and the same length as the stripe is provided on the left end of the bottom surface, and the remaining bottom surface is a white display area 13b.

An electromagnet 16 which is an electromagnetic means is arranged in the lower portion of the base frame 13 at a position corresponding to the embedded position of the rubber magnet 14b of the display member 14. The electromagnet 16 is formed by winding a coil 16b around a yoke 16a.

The rubber magnet 14b is magnetized so that, for example, the black position is the N pole and the white position is the S pole corresponding to each stripe of the display surface 14a of the display member 14.

The magnetic poles of the electromagnet 16 face the magnetic poles of the rubber magnet 14b, while when one faces the N pole, the other faces the S pole, and when one faces the S pole, the other. The interval is set so as to face the N pole.

FIG. 5 is a view showing a state in which display members 14 are arranged on a base frame 13 having a large number of recesses 12 provided in the vertical and horizontal directions, (a) is a partial plan view, and (b) is A of (a). It is a sectional view taken along the line A. As the display device, the window frame 15 is arranged on this.

As described above, the display device is constructed by arranging a large number of display elements in a matrix.

In the embodiment having such a structure, when the electromagnet 16 has the left magnetic pole set to S and the right magnetic pole set to N as shown in FIG. 1, the display member 14 is fixed in the illustrated state. Therefore, at this time, each window 15a of the window frame 15
From this, the white portion of the stripe of the display member 14 and the white display region 13b on the bottom surface of the base frame 13 can be seen. That is, when the surface of the window frame 15 is white, the display of the display element at this time is a solid white display as shown in FIG.

If the left magnetic pole is switched to N and the right magnetic pole is switched to S as shown in FIG. 4A, the display member 14 moves to the right by one stripe as shown in FIG. 4A. And then fixed.

Therefore, at this time, the black portion of the stripe of the display member 14 and the black display area 13a on the bottom surface of the base frame 13 can be seen from each window 15a of the window frame 15. That is, the display of the display element at this time is black in the window 15a and white in the window frame 15 as shown in FIG. 4 (b). This will appear gray to the human eye when viewed from a relatively distant position.

As described above, it is possible to switch between white and gray for display with one display element.

After the display member 14 is moved by switching the magnetic poles of the electromagnet 16, the display member 14 is stabilized by friction with the base frame 13 and magnetic force of the yoke 16a of the electromagnet 16, so that the electromagnet 16 is energized. It can be stopped, and energy can be saved accordingly.

By displaying individual display elements in white or gray in the display device as a whole, it is possible to display characters and graphics.

In each display element, since the display can be switched only by moving the display member 14 by one stripe width, it is possible to make the intervals of the regions contributing to the display between the adjacent display elements close to each other, and to realize the high density display. Can be realized and the contrast can be enhanced. Moreover, since the moving distance of the display member 14 is short, the electromagnet 1 that controls the movement of the display member 14 is used.
6 can also be made smaller, and therefore the overall size and weight of the device can be reduced.

Further, in the case of this display element, if the distance between the stripes is narrowed and the amount of movement of the display member 14 is reduced accordingly, the distance between the regions which contribute to the display between the adjacent display elements is further reduced. Therefore, higher density can be realized and the contrast can be further improved.

In the above embodiment, the rubber magnet is embedded on the back side of the display member. However, the display member itself is made of a magnetic material, and a sticker having a black and white stripe pattern is attached to the surface of the display member for display. It may be a surface. Further, the stripe pattern is not limited to white and black, but may be colors such as yellow and magenta.

Next, another embodiment of the present invention will be described with reference to the drawings. The same parts as those in the above embodiment are designated by the same reference numerals, and detailed description thereof will be omitted.

In the structure shown in FIG. 6, a display expansion plate 17 having a width that is one stripe wider than the surface is attached to the surface of the display member 14 and the display member 14 of the frame 11 of the base frame 13 is moved. The width in the direction is the stripe width 2
Doubled.

Then, white and black stripes are alternately drawn from the left side on the display expansion plate 17 to form a display surface. The left side stripe width of the frame 11 having a width twice the stripe width is used as a white display surface like the white stripe.

In the embodiment having such a structure, when the electromagnet 16 has the left magnetic pole as S and the right magnetic pole as N as shown in FIG. 6A, the display member 14 has the left end as shown in the figure. Moved to and fixed.

Therefore, at this time, the white portion of the stripe of the display expansion plate 17 and the white display surface of the frame 11 of the base frame 13 can be seen from each window 15a of the window frame 15. That is, the display of the display element at this time is as shown in FIG.
As shown in, the white color is displayed.

If the left magnetic pole is set to N and the right magnetic pole is set to S for the electromagnet 16 as shown in FIG. 6B, the display member 14 moves to the right end and is fixed as shown in the figure.

Therefore, at this time, the black portion of the stripe of the display expansion plate 17 can be seen from each window 15a of the window frame 15. That is, the display of the display element at this time is black in the window 15a and white in the window frame 15 as shown in FIG. 4 (b). This is displayed in gray as in the above embodiment.

Therefore, also in this embodiment, it is possible to switch and display white and gray with one display element.

Moreover, in this embodiment, since the display expansion plate 17 whose width is increased by one stripe to the left and right of the display member 14 is attached to the surface of the display member 14 to form the display surface, the direction of movement of the display member 14 is changed. The width can be narrower than that of the above embodiment by the width of one stripe.

Therefore, the weight of the display member 14 can be further reduced, so that the energy for controlling the movement of the display member by the electromagnet 16 can be reduced and the moving speed can be improved.

Further, since a part of the frame 11 of the base frame 13 is a white display surface, if the thickness of the display expansion plate 17 is set to 0.1 mm or less, the display surface of the display expansion plate 17 and the frame 11 can be reduced. Since there is almost no difference in the optical distance from the white display surface, it is possible to eliminate the display color unevenness as compared with the case where the bottom surface of the base frame 13 of the embodiment is used. It is needless to say that the same effects as those in the above-mentioned embodiment can be obtained in this embodiment.

The window frame 1 shown in FIGS.
5 uses a lens array 18 in which a plurality of condensing lens elements 18a that are convex outward are arranged. The width of each condensing lens element 18a is exactly twice the stripe width of the display expansion plate 17. Width, and each condensing lens element 18a
Are arranged so that the boundary of is approximately in the middle of the stripe.

In the embodiment having such a structure, when the electromagnet 16 has the left magnetic pole S and the right magnetic pole N as shown in FIG. 7A, the display member 14 has the left end as shown in the drawing. Moved to and fixed.

Therefore, at this time, the white portion of the stripe of the display expansion plate 17 and the white display surface of the frame 11 of the base frame 13 are the respective condensing lens elements 18 of the lens array 18.
It will be located exactly in the center of a.

Therefore, at this time, the color seen from the display surface side is a white display as shown in FIG. 7B due to the condensing function of the condensing lens element.

If the left side magnetic pole of the electromagnet 16 is set to N and the right side magnetic pole is set to S as shown in FIG. 8A, the display member 14 moves to the right end and is fixed as shown in the figure.

Therefore, at this time, the black portion of the stripe of the display expansion plate 17 is located at the center of each condensing lens element 18a of the lens array 18.

Therefore, at this time, the color seen from the display surface side is a black display as this display element due to the condensing action of the condensing lens element as shown in FIG. 8B. The white portion in the figure is due to the display element adjacent to the left side.

In this way, not only the white display but also the black display can be made 100%, so that the contrast becomes extremely high and a clearer display becomes possible.

The lens array 18 can be manufactured at low cost by plastic molding.

Further, as each condensing lens element 18a of the lens array 18, a lens having a short focal length is used,
If the gap between the lower surface of the lens array 18 and the display expansion plate 17 is made extremely small by making the lens thick, the lens array 18 can be used as a guide when moving the display member without degrading the display efficiency.

Further, in this embodiment, as shown in FIG. 9, if the display surface of the display expansion plate 17 is arranged closer to the lens than the focal length of each condensing lens element 18a of the lens array 18, it is possible to obtain a straight front surface. Even when the focus position shifts when viewed from a position deviated by an angle θ, the shift on the display surface of the display expansion plate 17 becomes small, so that the viewing angle of display can be increased.

Even in this case, the same Yellow River as in the above embodiment can be obtained.

In FIG. 10, a pair of electromagnets 161 and 162 are arranged for one display element. With this arrangement, the magnetic poles of the electromagnets 161 and 162 are left and right as shown in the figure. If the S pole is used, the display member 14 can be moved by a width that is half the width of one stripe. For example, if color colors are used as stripes, color display in which adjacent colors are mixed can be performed. For example, if one is yellow and the other is magenta, a mixture of red and red can be displayed.

In this case, red can be displayed even if a red portion is formed in advance at the boundary portion between yellow and magenta.

As described above, when the lens array 18 is used, by increasing the number of magnetic poles, it is possible to reduce the amount of movement of the display member 14 and increase the display colors.

FIGS. 11 and 12 show a display device in which the display surface is used upright. In this case, the stripe direction of the display expansion plate 17 of the display element is the horizontal direction, and the lens array 18 is also arranged accordingly. is doing.

A stopper 19 made of a magnetic material is fixed to the base frame 13 adjacent to the electromagnet 16.

In this case, if the upper magnetic pole of the electromagnet 16 is S and the lower magnetic pole is N as shown in FIG.
The display member 14 moves to the upper end as shown in the figure.

Therefore, at this time, the white portion of the stripe of the display expansion plate 17 and the white display surface of the frame of the base frame 13 can be seen through the lens array 18. That is, the display of the display element at this time is a single white color display as shown in FIG. In addition, the electromagnet 16 is shown in FIG.
When the upper magnetic pole is set to N and the lower magnetic pole is set to S as shown in (a), the display member 14 moves to the lower end as shown in the figure.

Therefore, at this time, the black portion of the stripe of the display expansion plate 17 can be seen through the lens array 18. That is, the display of the display element at this time is a black one color display as shown in FIG. The white portion in the figure is due to the display element adjacent to the upper side.

Further, when the display member 14 moves to the upper end, it is required that the display member 14 be stably held at the upper end position even if the energization of the electromagnet 16 is stopped, but the stopper 19 enhances the magnetic force. Therefore, stable holding can be performed. In this case, if the stopper 19 is brought into contact with the yoke of the electromagnet 16, a stronger magnetic force can be generated.

Even if the yoke itself is thickened instead of the stopper 19, the same effect can be obtained.

Further, since the stripe direction of the display expansion plate 17 is horizontal, the field range of display can be widened. That is, since the human viewpoint moves greatly in the horizontal direction but does not move much in the vertical direction, the visual field range can be expanded by making the stripe direction horizontal.

In FIGS. 13 and 14, the lens array 18 is arranged upside down. With this arrangement, the outer surface becomes a flat surface, so that the surface of the display element is less likely to be contaminated. Moreover, cleaning becomes easy.

Also in this case, when the electromagnet 16 has the left magnetic pole set to S and the right magnetic pole set to N as shown in FIG. 13A, the display member 14 moves to the left end as shown in FIG. The color seen from the side is a solid white display as shown in FIG. 13 (b).

If the left magnetic pole is set to N and the right magnetic pole is set to S for the electromagnet 16 as shown in FIG. 14 (a), the display member 14 moves to the right end as shown in the figure, so that the display surface side As shown in FIG. 14 (b), the color visible from the display is a black display for this display element. The white portion in the figure is due to the display element adjacent to the left side.

The lens array is not limited to a convex surface on one side, but may be a convex surface on both sides.

[0071]

As described above, according to the present invention, the moving distance of the display member used for changing the display can be shortened, so that the density of the display can be increased and the contrast can be increased. It is possible to provide a display device that can be reduced in size and weight as a whole.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a display element showing an embodiment of the present invention.

FIG. 2 is a plan view showing the configuration of each part of the embodiment.

FIG. 3 is a diagram showing a display state in FIG.

FIG. 4 is a sectional view for explaining another operation of the display member of the embodiment and a display state diagram at that time.

5A and 5B are a partial plan view and a cross-sectional view showing the entire display member arrangement of the embodiment.

FIG. 6 is a cross-sectional view for explaining the operation of the display member according to another embodiment of the present invention.

7A and 7B are cross-sectional views for explaining the operation of the display member and a display state diagram at that time according to another embodiment of the present invention.

FIG. 8 is a sectional view for explaining another operation of the display member of the embodiment and a display state diagram at that time.

FIG. 9 is a cross-sectional view for explaining the operation of the lens array of the same example.

FIG. 10 is a sectional view showing another embodiment of the present invention.

FIG. 11 is a cross-sectional view for explaining the operation of the display member and a display state diagram at that time according to another embodiment of the present invention.

FIG. 12 is a sectional view for explaining another operation of the display member of the embodiment and a display state diagram at that time.

FIG. 13 is a sectional view for explaining the operation of the display member and a display state diagram at that time according to another embodiment of the present invention.

FIG. 14 is a sectional view for explaining another operation of the display member of the embodiment and a display state diagram at that time.

FIG. 15 is a cross-sectional view showing a configuration of a conventional display element.

[Explanation of symbols]

 12 ... Recess 13 ... Base frame 14 ... Display member 15 ... Window frame 16 ... Electromagnet 18 ... Lens array

Claims (2)

[Claims] 1. A base frame formed by arranging a plurality of rectangular-shaped recesses of the same size vertically and horizontally, and a front surface serving as a display surface on which a plurality of colors are repeatedly displayed in stripes with a predetermined width in a moving direction, and a back surface side. At least a part of which is made of a magnetic material magnetized into N poles and S poles, and is movably provided in each recess of the base frame with a width shorter than the recess by a predetermined width corresponding to a stripe width. The display member, an electromagnetic means for controlling the movement of each display member in the recess by changing the polarity, and the display member arranged on the upper display surface side of the base frame, and the same color of the display surface of the display member is external. A display device comprising: a window frame provided with a plurality of windows having a predetermined width so as to be displayed. 2. A base frame formed by arranging a plurality of rectangular-shaped recesses of the same size vertically and horizontally, and a front surface serving as a display surface on which a plurality of colors are repeatedly displayed in a stripe shape with a predetermined width in a moving direction, and a back surface side. At least a part of which is made of a magnetic material magnetized into N poles and S poles, and is movably provided in each recess of the base frame with a width shorter than the recess by a predetermined width corresponding to a stripe width. The display member, an electromagnetic means for controlling the movement of each display member in the recess by changing the polarity, and the display member arranged on the upper display surface side of the base frame, and the same color of the display surface of the display member is external. A display device comprising: a lens array in which a plurality of condensing lens elements having a constant width are arranged side by side so as to be displayed.