JPH0430634Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Summary] The writing head of a fluid display device is arranged on a curved portion at the end of the device that changes from the front display surface to the back display surface or vice versa, and the thickness of the device is and expand the display area.

[Industrial application field]

TECHNICAL FIELD This invention relates to fluid display devices and, more particularly, to improvements in the arrangement of the write head of such devices.

[Conventional technology]

The flow display device partially shown in the plan view of FIG. 4a and the side view of FIG. 22 is a rotary display element (hereinafter referred to as a display element), and 22 is an endless conveyor belt (hereinafter simply referred to as a belt) in the vertical direction (a in the same figure).
23 is a magnetic piece incorporated in the display element, 24 is an electromagnet, and 25 is for preventing unnecessary rotation of the rotating element 21. Rotation prevention plate, 2
Reference numeral 6 indicates an end face of the rotation suppressing plate 25, respectively.

Approximately several dozen display elements 21 are arranged in the vertical direction of the rotating shaft 22, and one side of the display elements 21 is colored black and the other side is colored red, for example.

The display element is advanced together with the rotating shaft 22 in the direction of the arrow in FIG.
Thereafter, characters, figures, symbols, etc. are displayed in red on a black background or in the opposite manner depending on the arrangement of display elements, and a person viewing the display device sees such display in the direction of arrow V in the figure.

As described above, the magnetic piece 23 is embedded in the display element 21. With reference to figure a, the display element 21
Suppose that it comes from position A to position C via B in the figure. When you want to display something to the person viewing the display surface 21b, turn on the electromagnet 24 and attract the magnetic piece 23 at position C. When the display element 21 comes to position D, it will be rotated 90 degrees from the position at position A.
It's spinning. Display element 21 passes position E and moves to F
When the display element 21 approaches the position of the rotation suppressing plate 2
It contacts the end surface 26 of No. 5, rotates 90°, and rotates 180° from the arrangement at position A, and moves to positions G and H.
The display surface 21 appears to the viewer when it is reversed.
Display b. Since the display element 21 rotates in this manner, it is also called a rotating body, such rotation of the display element 21 is called writing, and the electromagnet 24 is also called a write head. The display element 21 is rotated as described above by turning the electromagnet 24 ON and OFF in response to a signal from a control panel (not shown), and the characters, etc. flow from left to right as seen in figure a. , the illustrated device is referred to as a flow display device.

The entirety of the above-mentioned flow display device is shown in the plan view of FIG.
28 is a front display surface, 28 is a back display surface, 29 is a write head section consisting of a plurality of electromagnets 24, 30 is a sensor, and 31 is a front panel.

The sensor 30 is disposed between the belt as shown in the figure, and the belt has windows at regular intervals. The sensor transmits light through the windows.
When the power is cut off, the electromagnet 24 is turned on as described above.
It is turned OFF and the desired writing is performed by the write head.

FIG. 6 is a front view of a portion of the flow display device, showing the belt 20 with light transmitting windows 32 arranged at equal intervals.

[Problem that the invention aims to solve]

Returning to FIG. 5, the writing head 29 of the flow indicator was located in the straight line portion of the belt. This is because writing while traveling straight is facilitated by the relationship between the sensor and the belt window 32.

However, for this reason, the flow device as a whole
The width shown by W in the figure is required, and there is a problem in that the display area A cannot be made sufficiently large, that is, the lateral length of the device cannot be effectively utilized.

The present invention was created in view of these points, and an object of the present invention is to provide a fluid display device with a large display area while reducing the width.

[Means for solving problems]

The above problem is solved by providing a writing head portion having a concave surface corresponding to the semicircular shape of the endless conveyor belt on the curved surface portion at one end of the fluid display device, and writing along the concave surface of the writing head portion. a plurality of electromagnets are disposed along the write head, and a rotation inhibiting plate is disposed with a convex surface facing the concave surface of the write head.
This problem can be solved by providing a flow display device characterized in that a cut-and-raised piece having an end face corresponding to the position of the electromagnet is arranged on the rotation inhibiting plate.

[Effect]

In other words, in the present invention, since the conveyor belt has a semicircular shape in the curved portion of the display device, the writing head portion is shaped with a concave surface, a plurality of writing electromagnets are arranged on the concave surface, and the rotation inhibiting plate is Since it is arranged in a convex shape facing the writing head part, all the space of the curved part is effectively used, and the width of the display device is reduced while increasing the lateral length of the display area. .

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

According to the invention, the write head portion 29 is located on a curved portion 33 in which the display element 21 is inverted relative to the viewer of the display. In FIG. 1, when a person looks at the fluid display device 10 in the direction of arrow V, the curved surface portion 33
In this case, the front and back sides of the displayed side are reversed. When the write head section 29 is arranged on such a curved surface part as shown in the figure, the display area A' formed by the part where the display element moves straight will utilize the entire part where the display element moves straight, which is different from the conventional example. This is approximately equal to the lateral length of the write head section 29 compared to the above.

In addition, the conventional writing head has a structure in which the entire writing head protrudes from the surface of the display area, and the width of the fluid display device is the width of the writing head added to the width of the liquid display, but as shown in FIG. In the preferred embodiment, the width of the fluid display device is reduced by the width of the write head compared to the prior art.

Write head 29 is shown in plan view in FIG. 2, where 34 is a cable connected to electromagnet 24. As shown in the developed front view of FIG. 3, the rotation suppressing plate 25 is provided with a cut-and-raised piece 35 corresponding to the arrangement of the electromagnet 24, so that the end surface 2 of the conventional example is
6 is formed. By doing this, the display element that has been rotated 90 degrees as in the conventional example will come into contact with the end face 36 and rotate 90 degrees again.

In the present invention, attention is paid to the arrangement of the light transmission windows 32 provided in the conventional belt. In the conventional example, writing was performed on a display element that moved in a straight line, so the electromagnet 24
The light transmitting windows 32 for opening and closing the sensors related to ON and OFF are arranged at equal intervals, but according to the present invention, writing is done in the part where the belt forms a semicircle (the part with R). The distance between the display elements 21 is larger than the distance when the belt is traveling straight. Therefore, in the present invention, the light transmitting window 3 is
2. Set the interval as appropriate.

[Effect of idea]

As described above, according to the present invention, the writing head of the fluid display device is arranged on a curved surface, and the width of the device can be made smaller and the display area larger than in the conventional example. The display element that has been rotated 90 degrees by the electromagnet is further rotated 90 degrees using the end face of the cut-and-raised piece formed on the rotation inhibiting plate, and writing is performed.This has the advantage that writing can be done using the principles of the conventional example. You can also get it.

[Brief explanation of the drawing]

Fig. 1 is a plan view of an embodiment of the present invention, and Fig. 2 is a plan view of an embodiment of the present invention.
3 is an exploded front view of the writing head of FIG. 2; FIGS. 4a and 4b are plan and side views of the writing head of a conventional fluid display device; FIG. 3 is an exploded front view of the writing head of FIG. FIG. 5 is a plan view of a conventional flow display device, and FIG. 6 is a front view of a mounting plate of the conventional flow display device. 1 to 6, 10 is a flow display device, 20 is a belt, 21 is a display element, 22 is a rotating shaft, 23 is a magnetic piece, 24 is an electromagnet, 25 is a rotation suppressing plate, and 26 is a rotation suppressing plate. End face, 27 is the front display surface, 28 is the back display surface, 29 is the write head part, 30 is the sensor, 31 is the front panel, 32 is the light transmission window, 33 is the curved part, 34 is the cable, 35 is the cutout. The strip 36 is an end surface.

Claims (1)

[Claims for Utility Model Registration] Curved portion 33 that is one end of the fluid display device 10
A write head portion 29 having a concave surface corresponding to the semicircular shape of the endless conveyor belt 20 in the curved surface portion.
A plurality of electromagnets 24 are disposed along the concave surface of the write head section 29, and a rotation inhibiting plate 25 is disposed with a convex surface facing the concave surface of the write head section 29. A flow display device characterized in that a cut and raised piece 35 having an end face 36 is arranged in correspondence with the position of the electromagnet 24.