JPS585781A - Multicolor display - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display device having a light source and a display element that blocks and opens the light at each position to display a multicolor display.

Conventionally, for example, Utility Model Publication No. 55-7977, Utility Model Publication No. 55
As disclosed in Publication No. 31589, etc., there are many display devices that display a desired display surface at a desired time by rotating a display body having a plurality of display surfaces using changes in the magnetic poles of electromagnets. Proposed. However, in conventional rotary display devices of this type, no consideration has been given to making the display surface emit light, and due to the immaturity of the structure of the display body and its drive mechanism, the light source is not connected to the display surface of the display body. Because of the distance between the two, it was not possible to provide sufficient illuminance. Therefore, at night, separate external lighting is required, and on the other hand, in this type of device, the periphery of the display surface must be covered with an opaque material to hide the unnecessary color surface of the color-coded display surface. The effective display area is reduced, and when a large number of pictures or characters are displayed side by side, lines and surfaces are likely to be interrupted and blurred, which is especially the case with the conventional display device with poor luminescence.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a multicolor display device that overcomes the above-mentioned conventional drawbacks, has a large display capacity, and displays clear images both day and night. Another object of the present invention is to provide a display device with a simple mechanism and low power consumption.

To explain an embodiment, 1 is a display panel of a display device according to the present invention. The display panel 1 is composed of a large number of display elements 2 arranged in an IJ rack shape. Each display element 2 is located on the display panel 1, with a central screen 3 and its frame portion 4.
forms the panel surface. Figure 2 shows one display element 2.
shows. Also, Figure 3 is the XX cross section (horizontal cross section) of Figure 2.
, and FIG. 4 shows the Y-Y cross section (vertical cross section) of FIG. 2, respectively. 5 is a frame of the display element 2;
The front part of the screen is the frame part 4, and the part corresponding to the central screen 3 is an opening. The frame 5 of each display element 2 is provided with a through hole 7 through which the cylindrical light source 6 passes. Each display element 2 gathers in this through hole 7 for the display panel l.
When constructed, the through holes 7 of each display element 2 communicate in parallel with the panel surface. The cylindrical light source 6 is provided so as to penetrate through the through hole 7 which communicates with the through hole 7. Reference numeral 8 denotes a cylindrical filter, and the cylindrical light source 6 is disposed so as to pass through the inner hole thereof. The main body or outer circumferential surface 8a of this cylindrical filter 8 is divided into four equal parts in the circumferential direction and is color-coded into four colors. Further, the circumferential % section of the outer circumferential surface 8a faces the panel surface as the central screen 3 of the display element 2. Light from the internal cylindrical light source 6 passes through this cylindrical filter 8 and is emitted as the four colors (black is absorbed and not emitted). Of this diffused light, the light from the central screen 3 is captured by the viewer's vision as display light. 9, 9 is the cylindrical filter 8
A pair of permanent magnets are fixed to both sides of the cylindrical light source 6, and the cylindrical light source 6 is formed in an annular shape so as to bypass the cylindrical light source 6. Both permanent magnets 9, 9 are each magnetized in the diametrical direction, and the N
Both permanent magnets 9, 9 are arranged so that the pole N and the south pole S are in opposite positions. Reference numeral 10 denotes a roller mounted on the inside of the frame 5, which is attached to the pair of permanent magnets 9 at several places on both sides of the frame 5.
is rotatably supported. This allows the cylindrical filter 8 to rotate freely. Reference numerals 11 and 12 are electromagnets provided at the upper and lower rear of the frame 5, lla, llb, and 12a.
, 12b are magnetic pole pieces formed on both sides of each electromagnet 1.1, l2. Each magnetic pole piece 11a, llb, 1
The tips of the magnets 2a and 12b are provided close to each other along the outer periphery of the permanent magnet 9. Further, the magnetic pole piece 11a and the magnetic pole piece 11b are arranged horizontally as a pair of magnetic pole pieces of the electromagnet 11, and the magnetic pole piece 12a and the magnetic pole piece 12b are arranged horizontally as a pair of magnetic pole pieces of the electromagnet 11.
They are arranged horizontally as a pair of magnetic pole pieces. on the other hand,
The magnetic pole piece 11a and the magnetic pole piece 12a are arranged approximately 90 degrees apart in the circumferential direction of the permanent magnet 9. The same applies to the magnetic pole piece 11b and the magnetic pole piece 12b. For each electromagnet 11.12, energized, de-energized, magnetic pole piece 11a, llb, 12a, 12
By each combination of N pole and S pole conversion appearing in b, the permanent magnet 9 is rotated to display a desired color surface on the screen 3 at a desired time.
appear in This operation is performed based on a control mechanism (not shown).

Next, the display operation by this device will be explained with reference to FIGS. 5 to 8. Note that the cylindrical filter 8 is omitted in the drawing. Now, in Fig. 5, if a pulse current is supplied to the electromagnet II so that a magnetic pole piece 1] ass pole S is generated (in this case, an N pole is generated in the magnetic pole piece 11b not shown in Fig. 1). ), permanent magnet 9 (pole piece 1 in the drawing)
Permanent magnets on the sides corresponding to 1a and 12a are shown. )
The permanent magnet 9 rotates due to the attraction and repulsion between the magnetic pole piece 11a, and the N pole of the permanent magnet 9 is attracted to the S pole of the magnetic pole piece 11a and remains stationary (in this case, the N pole of the magnetic pole piece 12a has a corresponding The S pole of permanent magnet 9 is attracted.).

In this stationary state, one of the divided color planes of the cylindrical filter 8 serves as the central screen 3 on the display panel 1.
It will be brought to the front. This pulsed current is cut off in a short time, but after that the magnetic pole piece 11a.

It continues to be held in its rest position by the residual magnetism of 11b and the magnetizing action of permanent magnet 9. Next, when a pulse current is supplied to the electromagnet 12 so that an S pole is generated at the magnetic pole piece 12a, the corresponding permanent magnet 9 rotates, and the N pole located at the magnetic pole piece 11a is attracted to the magnetic pole piece 12a. (Figure 6).

That is, the permanent magnet 9, and therefore the cylindrical filter 8, are rotated 90 degrees and come to rest, so that the different partitions of the cylindrical filter 8 face the front of the display panel 1 as a new central screen 3.

Next, as shown in FIG. 7, when a pulse current is passed through the electromagnet 1 in the opposite direction to that shown in FIG. 5 and a north pole is generated in the magnetic pole piece 11a, the state shown in FIG. The permanent magnet 9 rotates 90 degrees and comes to rest. Similarly, in the case of FIG. 8, by generating the N pole of the magnetic pole piece 12a, the S pole of the corresponding permanent magnet 9 comes around to the magnetic pole piece 12a. As described above, the permanent magnet 9 can take four positions in its rotational direction. Of course, the permanent magnet 9 can be freely moved in either the right direction or the left direction.

Furthermore, it is also possible to make the amount of rotation of the permanent magnet 9 100 degrees (it is only necessary to change the magnetic pole using the same magnetic pole piece). On the other hand, a cylindrical filter 8 to which a permanent magnet 9 is fixed
As described above, the outer circumferential surface 8a is divided into 90-degree color-coded sections, and each colored section becomes the central screen 3 in each holding state.

At this time, the opening surrounded by the frame portion 4 is made slightly narrower than the partitions for each color of the cylindrical filter 8 so that only one color can be observed from the outside as the central screen 3. or,
The frame portion 4 is formed with a suitable opening angle, and its inner surface is made to have good reflectance. This results in
The transmitted light from the cylindrical filter 8 and the reflected light from the frame portion 4 can be effectively projected as a light beam with an appropriate spread.

If white light is used for the cylindrical light source 6 and the cylindrical filters 8 are color-coded into white, green, blue, and red, each of these display elements 2 can be controlled and activated at the same time by a control mechanism (not shown) to display white, white, In zero or more embodiments in which a multicolor display of green, blue, and red can be expressed on the display panel 1, the light source 6 is placed immediately after the cylindrical filter 8 that constitutes the central screen 3 of the display element 2. Therefore, the brightness is very bright,
Since the cylindrical light source 6 is an internal illumination type that has very good visibility regardless of day or night and passes through the cylindrical filter 8, the light coming out of the cylindrical filter 8 spreads over a wide angle and illuminates the frame 4. As a result of reflection on the inner surface, the display surface becomes wider and there is almost no dead space on the display panel 1. Furthermore, since the cylindrical light source 6 is used by penetrating it, it is very advantageous in terms of mechanism and cost compared to a system using individual light sources.

The embodiment shown in FIG.
Notches 13 are formed in a, llb, 12a, and 12b. This example will be explained with reference to FIG. 9. In FIG. 9, when the magnetic pole piece 11a holding the N pole of the permanent magnet 9 is changed to the N pole, the magnetic pole piece 11a and the permanent magnet 9 becomes a repulsive state. However, if the center position of the force acting as the S pole of the magnetic pole piece 11a in the holding state is the same as the center position of the force acting as the N pole in the repulsion state, no component force in the rotational direction is generated in the permanent magnet 9. ,
This may cause the inconvenience of not rotating. Therefore, as shown in FIG. 10, the magnetic pole pieces 11a and llb.

Appropriate notches 13 are formed in 12a and 12b.

As a result, in the holding state, the four parts of the notch 13 are farther away from the permanent magnet 9, and the center of the acting force of the magnetic pole piece 11a attracted to the permanent magnet 9 is moved a little more toward the direction without the notch 13 than when the notch 13 is not present. It will be. Assume that the center of the acting force in this case is at the position indicated by angle α in FIG. Next, the electromagnet 11 is excited to set the magnetic pole piece 11a to N.
When magnetized as a pole, the magnetic flux density of the minimum width portion 14 due to the notch 13 exceeds the saturation magnetic flux density of the material, causing leakage magnetic flux in the notch 13 portion. As a result, the center of the magnetic force of the magnetic pole piece 11a is shifted from the angle α toward the notch 13 by an angle β. Therefore, when the relationship between the permanent magnet 9 and the magnetic pole piece 11a changes from the holding state to the repulsive state, a component of the repulsive force is generated in the rotational direction, and the permanent magnet 9 is reliably rotated. This means that the cylindrical filter 8 rotates smoothly in response to the operation.

In the above embodiment, the case of four-color display was shown, but
It is also possible to display two colors by using one electromagnet and dividing the cylindrical filter into two colors in the circumferential direction. It is also possible to use a plurality of three or more electromagnets and color-code the outer circumferential surface of the cylindrical filter into equal parts equal to the number of electromagnets in the circumferential direction, thereby displaying six or more colors.

Furthermore, although a cylindrical filter was used in the above embodiment, a polygonal cylinder such as a square or hexagonal cylinder may also be used. Further, in the above embodiment, three rollers 10 are arranged at intervals of about 120 degrees, but this can be done by bearings or other means as long as the cylindrical filter 8 can be held rotatably.

Alternatively, as shown in FIG. 11, the permanent magnet 9 may be supported in the thrust direction and the cylindrical light source 6 may be passed through it in the vertical direction. That is, in this embodiment, in the display panel l shown in FIG. 1, the cylindrical light sources 6 are arranged vertically on the back surface side.

In addition, in the above embodiment, the magnetic pole piece 11a of the electromagnet 11.12
, 11b, 12a, and 12b are arranged close to the circumferential surface of the permanent magnet 90, but as shown in FIG. 12, the end surface side of the permanent magnet 9 may be used to operate the magnetic force.

Alternatively, as shown in FIG. 13, one electromagnet 11 may be used and its magnetic pole pieces 11a and llb may be opposed to each other by 180 degrees with respect to the rotational direction of the permanent magnet 9. In this case, the cylindrical filter 8 is often divided into two colors for two-color display.

Further, in the above, a separate permanent magnet 9 is attached to the cylindrical filter 8, but by making a part of the cylindrical filter 8 possess magnetism, or by using a magnetic material in the cylindrical filter 8, the above-mentioned The permanent magnet 9 can also be omitted.

As described above, according to the present invention, the cylindrical filter color-coded in the circumferential direction is rotatably controlled by an electromagnet, and the cylindrical light source penetrates the inside of the cylindrical filter. The brightness is bright and visibility is very good both day and night. In addition, since it is an internally illuminated type, the light coming out of the filter spreads over a wide angle and is reflected on the inner surface of the frame, making the display surface wider. It is very clear in comparison. In addition, it can display multiple colors. Since the filter is made into a cylinder and the cylindrical light source passes through the filter, the structure is much simpler than that which requires separate light sources.

Moreover, since the cylindrical light source can be shared, it saves labor and costs.

Furthermore, when a display device is constructed by arranging display elements, the mechanical relationship between the arranged display elements and the cylindrical light source that passes through them is very simple, and assembly is easy. Further, if a notch is provided in the magnetic pole piece of the electromagnet, the rotational movement of the cylindrical filter becomes smooth, and the display can be performed reliably and smoothly. Moreover, no special mechanism is required just by providing a notch.

[Brief explanation of the drawing]

FIG. 1 is a front view of a display device showing an embodiment of the present invention, and FIG.
The figure is a front view of a display element constituting a display device, FIG. 3 is a cross-sectional view taken along line XX in FIG. 2, and FIG. 4 is a cross-sectional view taken along line Y-Y in FIG.
5 to 8 are simplified diagrams showing the display operation of the display element,
9. FIGS. 7 and 10 are simplified diagrams showing other examples of display elements, and FIGS. 11 to 13 are simplified diagrams showing other examples of display elements. ■ Display panel, 2 Display element, 3 Center screen, 4 Frame, 5 Frame, 6 Cylindrical light source, 8 Cylindrical filter, 9...Permanent magnet,
11.12...Electromagnet, lla, llb, 12a, 1
2b-Magnetic pole piece, 13...notch Figure 9 Figure 1 Net 3 figure jllllZ figure

Claims (3)

[Claims] (1) A cylindrical filter that is formed in a cylindrical shape so that a cylindrical light source passes through its inner hole, is rotatably supported by a frame, and is partitioned in the circular direction and color-coded, and the cylindrical filter a permanent magnet attached to the permanent magnet; and an electromagnet having a magnetic pole piece disposed close to the permanent magnet and rotating the cylindrical filter by changing the magnetic pole generated in the magnetic pole piece. A multicolor display device featuring (2) The display device according to claim 1, wherein a large number of display elements are arranged vertically and horizontally, and the cylindrical light source is arranged vertically or horizontally through a cylindrical filter of each display element.
color display device (3) The multicolor display device according to claim 1 or 2, wherein a notch is formed on the surface of the magnetic pole piece facing the permanent magnet.