JPS5961869A - Display - Google Patents

Abstract

(57) [Summary] 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 that displays characters, numbers, etc. by arranging a large number of devices in a row.

Since magnetic reversal type display devices can achieve large-sized displays and power-saving displays, a large number of magnetic reversal type display devices are arranged in a row and are often used for time displays, road signs, and advertising purposes.

Such magnetic reversal type display devices are made of permanent magnets or display boards incorporating permanent magnets can be reversed by changing the direction of the electric current of the electromagnet and changing the direction of the magnetic field of the stator. However, this display device could only display two colors on the front and back sides of the display board.

Therefore, an object of the present invention is to provide a display device that can perform multicolor display.

The present invention is capable of selectively directing any side surface of the display element forward by rotating a polygonal columnar display element with a different color scheme on each side surface about a central axis. It is characterized by:

Hereinafter, embodiments will be described in detail with reference to FIGS. 1 to 10.

As shown in FIGS. 1 and 2, this display device has different color schemes (
For example, a rectangular cylindrical display element 1 coated with a color (black, red, yellow, green) is fixed to a pair of holders 2 and 3 by means such as press-fitting or gluing so that their central axes coincide, and one holder is A circular recess 2a provided on the outer surface of 2 has a N pole and an S pole in the circumferential direction.
A ring-shaped rotor 4 with four mutually magnetized poles is housed and fixed so that their central axes coincide with each other, and a pair of holders 2゜3
is rotatably supported by a fixed shaft 5 passing through its central axis. Therefore, the display element 1 and the rotor 4 rotate about the fixed shaft 5.

A substantially spiral stator 6 that can form four poles in the circumferential direction is fixed to the fixed shaft 5, and coils 7 and 8 are wound around two sides of the stator 6 that are directly opposite each other, and the rotor 4 The pair of holders 2 and 3 are positioned by a slider 9 so that the rotor 4 rotates outside the stator 6 while maintaining an appropriate gap between the inner peripheral surface and the outer peripheral surface of the stator 6.

Further, a position detection protrusion 1a is provided at the end of one side surface IA (black) of the display element 1.
The photosensor 10 is installed in a position where it can be held between the two sides, and when the display element 1 rotates and the black side surface IA is positioned in front, the optical path between the light emitting and light receiving elements of the photosensor 10 is set with the position detection protrusion la. It is designed to be blocked.

The fixed shaft 5 is installed between a pair of bearings 12 and 13 arranged in parallel on a fixed plate 11, and the stator 6 is fixed to the boss 15 by passing screws 14 through the through holes 12a to 12 of the bearing 12. 12, and thereby the υ fixed shaft 5 is also fixed to the bearing 1.
It will be fixed at 2.

In this display device, two types of magnetic field distributions can be obtained by energizing each of the coils 7.8. When no current is applied to any of the coils 7.8, the four magnetic poles of the rotor 4 are stopped at positions facing the four poles of the stator 6, respectively. For example, the state shown in FIG. 3 is a black display state in which the black side surface IA of the display element 1 faces forward. In this state, when the coil 7 is energized, the first and third poles of the stator 6 6a and 6c become south poles, and the second and fourth poles 6b and 6d become north poles, repelling all the magnetic poles of the rotor 4, causing the rotor 41, holders 2, 3, and display element l to move counterclockwise. When the coil 7 is rotated 90 degrees in the direction shown in FIG. 3, a red display state is obtained with the red side surface IB facing forward, and this state is maintained even when the power supply to the coil 7 is stopped. In this case, the rotor 4 rotates counterclockwise because the pole center of the stator 6 when the coil 7 is energized and the pole center of the stator 6 when the coil 7 is not energized are slightly angularly shifted. Therefore, when the current supply to the coil 7 is stopped, the coil 7 rotates further by the above-mentioned angular deviation.

Next, when the coil 8 is energized, the first pole 6 of the stator 6
A and the third pole 6C become north poles, and the second pole 6B and fourth pole 6D become south poles, repelling the magnetic poles of the rotor 4, respectively. The holders 2 and 3 and the display element 1 are further rotated 90 degrees counterclockwise, and the yellow side face 1C is bent as shown in FIG. This state is maintained even when stopped.

When the coil 7 is energized again, the first pole 6A and the third pole 6C become S poles, and the second pole 6B and fourth pole 6D become N poles, and the coil 7 similarly rotates 90 degrees counterclockwise. When the coil 8 is energized again, the first pole 6A and the third pole 6C become the N pole, and the second pole becomes the N pole. The pole 6B and the fourth pole 6D are the south poles, and the counterclockwise direction is 90
Rotate once and return to the black display state of the M3 figure.

When changing the display, the coils 7.8 are alternately energized to change the display state of each color to a position where the optical path between the light emitting and light receiving elements of the photosensor 10 is blocked (black display state).
The desired color can be displayed by rotating the rotor 4 up to the desired color and then alternately energizing the coils 7 and 8 depending on the desired color. That is, in order to display a green color, the coils 7 and 8 are first alternately energized to display a black color, then the coil 7 is energized to display a red color, and then the coil 8 is energized to display a yellow color. Then, the coil 7 may be energized to display green.

Next, the electrical configuration and operation of this display device will be explained in detail. This display device is shown in FIGS. 4 and 5.
As shown in the figure, a start switch SW, an astable multivibrator O8C, a binary counter CT,
It is composed of a photosensor 10, a color selection section C8, a polarity inversion section IV, and a drive section DR.

The photosensor 10 includes a light emitting element LED and a light receiving element PT.

The color selection section C8 is a color selection switch 5w-5w4 that selects all black, red, yellow, and green displays.
It consists of NAND GAME) NA1 and AND GATE H~AN3.

The polarity inversion section IV includes a D flip-flop DFF, an AND gate AN, , AN5, and an OR gate OR.
2, and inverters N and IN. Note that the agate OR, the AND gate Mζ, AN5, and the inverter IN2 constitute the entire Gert circuit G.

The drive unit DR includes a coil 7.8, a transistor TR□,
TR2, Antogame) AN6, flip-flop FF, Noah gate No., inverter N3゜I
Consists of N.

Note that FF is a flip-flop, OR3 and OR.

is an or gate, AN7 and AN8 are and gates, D
F is a differential circuit.

The following description will be made with reference to all waveform diagrams.

(1) Operation when changing from black display state to red display state - This will be explained with reference to FIG. In the initial state, the start switch SWo is off, the color select switches sw to sw are off, and the optical path of the photosensor 0 is blocked by the position detection protrusion 1a.

Color select switch 5W2 to select red display state
f: Turn on color select switch f4sW.

When the output b'e of rLJ becomes rHJ, the AND gate opens and the output k of NO□ becomes rLJ.

Next, when the start switch SWo is turned on instantaneously and the output 5tart'c of the start switch SWo is instantaneously set to rHJ, the output i of the flip-flop FF changes from rHJ to rLJ, causing the oscillation of the astable multi-by-break O8C. Start all operations, and release the reset value of the binary counter CT via OR gate OR4, and release D flip 70 (DFF) via OR2'i. In this case, the oscillation period T of the astable multivibrator O5C is set to the coil application time required to change one display, for example, 500 seconds.

When the astable multivibrator O8C starts oscillating and the reset of the binary counter CT is released, the color select switch sw□ is off and its output d is rLJ, so the output j of Nandgelt NAl becomes rH.
When the AND gate AN8 is opened, the oscillation output of the astable multipipe rake osc is input to the binary counter CTK CLOCK input.

The output Q□ of the binary counter CT changes from "LJ" to "H" in response to the first fall of the CLOCK input being 9. This output Q□ is input to the gate circuit G.

Since the photosensor 10 is in the edge light state, the output 0 of the light receiving element FT is held at rHJ, and the rise of the D clip front DFF Vc FirLJ to rHJ is not applied, and the D flip 70 clock is not applied. DFF output Q
remains rHJ. Therefore, the AND gate AN4 in the gate circuit G is opened, and the output Q□ of the binary counter CT passes through as it is and is applied to the base of the transistor TR□ and the flip-flop FF□.

Now, since the output Q of the binary counter CT is rHJ, the transistor TR is turned on and the coil 7 is energized. On the other hand, the flip 70-tub FF changes its output from 1't rLJ to rHJ in response to the rise of the output Q, and the AND gate AN6 opens due to the RESET input in which this output l and the RESET input are inverted by the inverter IN. , the output m of the inverter IN3 which is the inversion of the output (output Q) of the gate circuit G is rLJ, so the transistor TR2 is off and the coil 8 is not energized.

Therefore, by energizing the coil 7, the states of the display element 1 and the rotor 4 change from the state shown in FIG. 3 to the state shown in FIG.

After that, the binary counter CT is set to the second value of the CLOCK input.
In response to the second falling edge, the output Q changes from rHJ to “L”.
At the same time, the output Q changes from rLJ to rHJ. As a result, the transistor TR1 is turned off and the current to the coil 7 is stopped, the output m of the inverter N3 changes from rLJ to rHJ, the transistor TR is turned on and the current to the coil 8 is started. I try to sleep. However, as the output Q2 changes from rLJ to rHJ, the AND gate AN and OR game)
The flip-flop FF2 is reset via 0R3e, the output i changes from rLJ to rHJ, the oscillation of the astable multi-by-break O8C is stopped, the Ae)-recounter CT and the D flip-flop DFF are reset, and the output of the AND gate AN6 is reset. The output n does not become rHJ,
The coil 8 is not energized, and the display element 1 and rotor 4 do not rotate any further.

After that, when the color select switch sw2'i is turned off, the output k of the NOR gate NO changes from rLJ to rHJ, and the output l of the flip-flop FF□ changes from "H" to r
Changes to LJ. Note that by rotating the display element 10 times, the photosensor 10 is no longer in the cut-off state, and the output 0 of the light receiving element becomes rLJ.

(2) The operation when changing from the black display state to the yellow display state will be explained with reference to FIG. The initial state is the same as in case (1).

Color select switch sw3 to select the yellow display state
't Turn on the color select switch SW3 output c
When changing from 'erLJ to rHJ, the AND gate opens and the output k of NO□ becomes "L".

Next, when the start switch swo'e is turned on instantaneously and the output of the start switch SWo'e is turned on to rHJ instantaneously, the output i of the flip-flop FF changes from rHJ to rLJ, and the astable multi-noise (ibrator O8C) Inary counter C that starts oscillation and
Release the reset of T and D flip-flops DFF.

As a result, as in case (1), the inari counter C
The output of astable multivibrator O8C is CLOC at T.
Added as K input.

The output Q□ of the binary counter CT changes from rLJ to "H" in response to the first fall of the CLOCK input being 9. This output Q is input to a gate circuit G.

Since the photosensor 10 is in a light-shielded state, the D flip 70
The output 6 of the tube remains rHJ as in case (1). Therefore, as in case (2), the output Q1 passes through the gate circuit G' as it is, and the transistors TR and TR3
are turned on and off, respectively, and only the coil 7 is energized, so that the states of the display element 1 and the rotor 4 change from the state shown in FIG. 3(5) to FIG. 3), that is, from the black display state to the red display state.

After that, the binary counter CT changes the output Q from rHJ to rL in response to the second falling edge of the CLOCK input.
J, and the output Q changes from rLJ to (-H).As a result, the transistor TR turns off, the current to the coil 7 is stopped, and the output m of the inverter N3 changes from "L" to rHJ. and therefore the AND gate A
The output n of N6 also changes from rLJ to rHJ, the transistor TR3 is turned on and the coil 8 is energized, and the state of the display element 1 and rotor 4 changes from 1 in Fig. 3 to the state in Fig. 3 (Q). .

Thereafter, the binary counter CT changes the output Q from "Lj to rH" in response to the third falling edge of the CLOCK input.
J, and the output Q3 changes from "L" to "H".

As a result, transistor TR3 is turned off and coil 8
The energization stops and the transistor TR tries to turn on again, but since the output of the AND gate AN2 changes from "L" to rHJ, the flip-flop FF is set again, and the output i changes from rLJ to rHJ. As a result, the oscillation operation of the astable multi-by-break O8C is stopped, the binary counter CT and the D flip-flop DFF are reset, and the display element 1 and rotor 4 stand still in the state shown in FIG. 3 (Q).

After that, if you turn off the color select switch SW3, 1. The output k of NOR gate No. □ changes from rLJ to rHJ, and the output l of flip-flop FF□ changes from rHJ to r.
Changes to LJ.

(3) The operation when changing from the black display state to the green display state will be explained with reference to FIG. The initial state is the same as (1).

a color select switch sw for selecting the green display state;
It is sufficient to turn on i, set the output a ffi rLJ to "H", and then turn on the start switch SWokm temporarily. In this way, the output Q□ of the binary counter CT will be inverted every time the CLOCK input is applied, and (2
), first the coil 7 is energized and the change from Fig. 3 (B) to Fig. 3 (CB) (7, then the coil 8 is energized and the change from Fig. 3 (B) to Fig. 3 ( C), and the coil 7 is energized again to change from Fig. 3 (C) to Fig. 3 (2).
changes to the state of

Then, at the fourth falling edge of CLOCK, the output e of the AND gate AN3 becomes rHJ, the flip-flop FF2 is reset, and the output i becomes l'-)ij. After that, it is the same as (1) and (2).

(4) A case where a selection operation for the black display state is performed in the black display state will be explained. The initial state is the same as (ri).

Color select switch 5w1 for selecting black display state
i Turn on the color select switch S Kaigo output d
When ffi rLj becomes rHJ, the output j of Nantes gate NA becomes rLJ, and AND gate AN8 closes,
In addition, the output 0 of the photo sensor 10 is also rHJ, and even if the switch swo-i is turned on, the CLOCK input is not applied, the binary counter CT does not operate, and the coil 7.8
No current flows through any of them, and the display is not changed.

(5) The operation when changing from the red display state to the hot color display state will be explained with reference to FIG. In the initial state, the start switch SW and color select switch 5w-5
w is off, and the output 0 of the photosensor 0 is "L".

Turn on the color select switch S, which selects the black display state, and turn on the output d of the color select switch SW3.
When changing from rLJ to rHJ, the output j of the Nantes gate NA becomes rLJ, and as the AND gate AN8 opens, the output k of the NOR gate N01 becomes rLJ.

Next, turn on the start switch SWo' momentarily and set the output of the start switch SWo' to 5tart? , the output i of flip-flop FF2 is instantaneously set to rHJ.
becomes rHJ, the astable multi-vibrator O8C starts oscillating, the reset of the binary counter CT is canceled, and the reset of the D flip 70 knob DFF is also canceled.

When the astable multivibrator O8C starts oscillating and the reset of the binary counter CT is released, the output O of the photosensor 10 is rLJ, so the output J of the Nant gate NA□ is rHJ, and the AND gate AN8 is It is open, and the oscillation output of the astable multivibrator O8C is applied as a CLOCK input to the binary counter CT.

The output Q of the binary counter CT changes from "L" to II (J) in response to the first falling edge of the CLOCK input. This output Q□ is input to the gate circuit G.

Now, the output 0 of the photosensor lO is rLJ, and no rising output is added, and the output Q of the D flip-flop DFF
remains as [(J. Therefore, the output Q passes through the gate circuit G' as it is and is applied to the transistor TR and the flip-flop FF□.

Now, the output Q of the binary counter CT is [(J, so the transistor JTR is turned on and the coil 7 is energized. On the other hand, the flip-flop FF1 outputs an output in response to the rise of the output Q). l changes from FLJ to "H", and the AND gate AN6 opens due to this output l and the RESET input, but since the output m of the inverter IN3, which is the inversion of the output (output Q) of the gate circuit G, is rLJ,
The transistor TR3 is off and the coil 8 is not energized.

Therefore, by energizing the coil 7, the states of the display element 1 and the rotor 4 change from () in FIG. 3 to that in FIG. 3(C).

Thereafter, in response to the second falling edge of the binary counter CT'B CLOCK input, the output Q1 changes to "L" and the output Q2 changes to rHJ. As a result, the transistors TR and TR2 are turned on and off 9, the coil 8 is energized, and the coil 7 is de-energized.

As a result, the display element 1 and the rotor 4 change from the state shown in FIG. 3(C) to the state shown in FIG. 3(II).

After that, the third rising edge of the CLOCK input is 9, the output Q1 becomes rHJ, the on/off states of the transistors TR□ and TR3 are reversed again, the coil 7 is energized, and the coil 8 is turned on.
energization is stopped. As a result, the display element 1 and the rotor 4 change from the state shown in FIG. 3(c) to the state shown in FIG.

At this time, the output 0 of the photosensor 10 changes from rLJ to rH.
J, and the output d is also rHJ, so the output j is rL
J, and the AND gate AN8 closes, and the output p of the AND gate AN7 becomes rHJ, and the flip flow rough F
F, cut and astable multivibrator O5C
stops oscillating. As a result, the black display state is maintained.

(6) The operation when changing from the red display state to the green display state will be explained with reference to FIG. 1O.

Turn on the switch sw for selecting the green display state, and then turn on the start switch SWo, the 9th
The red display state changes sequentially to the black display state by the same operation as in the case of the figure, and here the output 0 of the photosensor 10 is rLJ
At this time, the output of the differentiating circuit DF resets the binary counter CT, and the clock input is added to the D flip-flop DFF, so that the output Q becomes rLJ, and the output Q of the binary counter CT becomes the gate. It will be inverted when passing through circuit G' (5).

Thereafter, the black display state changes to the green display state by the same operation as in FIG. Note that the reason for performing polarity reversal is to prevent the rotor 4 from rotating in the opposite direction at the time of reset.

Note that other display changes are made in the same manner.

In this way, in this embodiment, by rotating the rectangular cylindrical display element 1 with a different color scheme on each side surface using the center @ as the rotation axis, f) any side surface of the display element 1 is directed forward. This makes it possible to easily switch between four colors of display. Moreover, display switching can be performed at high speed.

Furthermore, since all driving parts are located inside the display element 1, the device can be made thinner.

As described above, the display device of the present invention has a polygonal prism-shaped display element with a different color scheme applied to each side, and is driven to rotate around the central axis, so that any side of the display element can be selectively rotated. Since it faces forward, it has the effect of easily displaying multiple colors.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of one embodiment of the present invention, the second factor is a sectional view of the assembled state, Fig. 3 (4-(1)) is a side view showing each display state, and Fig. 4 is an electrical 1 block diagram, FIG. 5 is a specific circuit diagram thereof, and FIGS. 6 to 10 are waveform diagrams of each part in each state. 1... Display element, 2, 3... Holder, 4 Rotor, 5...
...Fixed shaft, 6...Stator Fig. 3 IV Fig. 4 Fig. 6 Fig. 7 Procedural amendment (voluntary) December 2, 1980 To the Commissioner of the Japan Patent Office 1, Indication of the case 1988 Patent Application No. 173529 2, Invention title display device 3, Relationship with the case of the person making the amendment Applicant address: 1048 Kadoma, Oaza, Shin City, Osaka Prefecture Name:
(583) Matsushita Electric Co., Ltd. Representative Kobayashi
Iku 48th Rijin 5, date of amendment order Month, Showa
Voluntary amendment 6, subject of amendment (]) Page 8, line 20 of the specification, I' 500 Se
c Correct J to r500rnsecJ. (2) Page 16, line 7 of the specification, [Color Select Switch 5W3J] 1 Color Select Inochi 5WI
Correct J and 1. (3) On page 16, line 9 of the specification, the statement [output J becomes "1."] is corrected to -1, with output j remaining rHJ. (4) Page 16, line 15 of the specification, “becomes r HJ,
-1 becomes 1゛L,'' and so on. (5) Figure 5 of the drawings shall be amended as shown in the attached sheet.

Claims (1)

[Claims] A display device in which an arbitrary side surface of the display element is selectively directed forward by rotating a polygonal columnar display element with a different color scheme on each side surface about a central axis.