JPH0417437B2 - - Google Patents

Description

[Detailed description of the invention] Industrial applications The present invention relates to a fluid display device.

BACKGROUND TECHNOLOGY A fluid display device assembles a large number of pixels in a matrix configuration into a display panel, and is used as a notice board for news, forecasts, etc.

FIG. 3 shows the appearance of a conventional flow display device. As shown in FIG.
A display surface 11 is formed by mounting a plurality of pixel bodies in a skewer shape and arranging them in parallel on a display surface 11, which is moved by two rollers 13 in a fixed direction (as shown by the arrow) and is moved by a writing head 14. The pixel body is displayed rotated,
The data is restored and erased by the erasing head section 15.

FIG. 4 is a schematic diagram illustrating the write head of a conventional fluid display device. As shown in FIG. 4, a rotating pixel body 3 skewered on a vertical shaft 2 is rotated 180° by the electromagnet 1, which is composed of a coil 1a and an iron core 1b, for example, and by rotation suppressing plates 6a and 6b. That is, a magnetic piece 4 is embedded in the end of the pixel body 3, and as the pixel body 3 moves (movement direction 5), it approaches the electromagnet 1, and the magnetic piece 4 embedded in the pixel body becomes an electromagnet. 1, rotates counterclockwise and hits the rotation suppression plate 6b.
Rotate 180°. This rotation creates and displays display changes on the front and back sides of the pixel body.

However, as shown in Fig. 5, when the pixel body 3 undergoes abnormal vibration and the vertical axis 2 becomes separated from the electromagnet 1, it is not normally attracted to the electromagnet 1 (C), and the display window ( (not shown), resulting in inaccurate display.

Problems to be Solved by the Invention The object of the present invention is to solve the problem that a pixel body that moves while vibrating is not properly attracted to an electromagnet for writing and displaying.

Means for Solving the Problems In order to solve the above problems, according to the present invention, a rotatable display element having front and back surfaces as display surfaces and a magnetic piece on one side is installed in each vertical direction of an endless conveyance chain. In a fluid display device in which information is written by being driven reversing or non-reversing in a certain direction by magnets mounted on a shaft and arranged perpendicularly to the chain conveyance direction, the display element is mounted on the fluid display device. The problem is solved by a flow display device characterized in that a common plate having a shaft hole whose center is shifted from the center by a certain length in a certain direction is arranged on the shaft and another shaft adjacent to the shaft. be done.

Effect: That is, in the present invention, the space between the rotation inhibiting plates on which the display element moves can be shifted to a certain side, thereby making it possible to reliably move the display element.

Embodiments Hereinafter, embodiments of the present invention will be described based on the drawings. FIG. 1 is a schematic diagram for explaining the present invention, and FIGS. 2A and 2B are diagrams showing a common plate according to the present invention.

In FIG. 1, for example, a common plate 7 for three adjacent pixel bodies 3, which are display elements, is disposed between rotation suppressing plates 6a, 6b, 6c, and 6d in a state as shown in FIG. 2A, for example. The center line C2 of the holes of the three axes of the pixel body 3 passing through this common plate 7 is shifted from the center line C1 of the common plate in a certain direction (towards the electromagnet in Fig. 1) as shown in Fig. 2B. <B) It is arranged.

By providing the common plate 7 such as a spacing plate, even if the center line C2 of the shaft hole of the pixel body shifts in the opposite direction to the electromagnet 1 side due to vibration (the common plate 7 and the rotation prevention plate As shown in Figure 2B, the center line C2 is originally provided on the electromagnet 1 side. The pixel body 3 will not be separated from the electromagnet more than necessary due to vibration during attraction.

Effects of the Invention As described above, according to the present invention, the pixel body does not abnormally separate from the electromagnet during absorption, so that it is normally attracted by the electromagnet and accurate information can be displayed.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram for explaining the present invention, FIGS. 2A and 2B are diagrams showing a common plate according to the present invention, and FIG. 3 is an external perspective view of a conventional flow display device. 4 is a schematic diagram showing a write head section of a conventional fluid display device, and FIG. 5 is a schematic diagram for explaining an abnormal display of a conventional fluid display device. DESCRIPTION OF SYMBOLS 1... Electromagnet, 1a... Coil, 1b... Iron core, 2... Vertical axis, 3... Pixel body, 4... Magnetic piece, 5... Movement direction, 6a, 6b, 6c, 6d...
... Rotation prevention plate, 7... Common plate (interval plate), 11...
...Display surface, 12...Chain, 13...Roller, 14...Writing head section, 15...Erasing head section.

Claims (1)

[Claims] 1. A rotatable display element having front and back surfaces as display surfaces and a magnetic piece on one side is attached to each vertical axis of an endless conveyance chain, and is mounted in a direction perpendicular to the chain conveyance direction. In a fluid display device in which information is written by reversing or non-reversing driving in a certain direction using arranged magnets, a common shaft connecting the shaft on which the display element is mounted and another shaft adjacent to the shaft is used. A fluid display device characterized by having a plate arranged thereon.