JPS58207Y2 - display device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a display device suitable for application to, for example, a digital display type time display clock that is used by being attached to the wall of a building.

For example, in the past, a digital clock display mounted on the wall of a building used a large number of light-emitting elements such as lamps, and these light-emitting elements selectively emitted light to display numbers. For example, a plurality of spherical bodies or rod-shaped bodies painted half in white and half black are exposed to the display surface through a hole formed in the plate surface, and the spherical bodies or rod-shaped bodies are rotated. By doing so, white portions and black portions are selectively exposed to the display surface, and numbers, symbols, etc. are displayed by arranging the black portions of a plurality of display elements.

However, lamps that use lamps have the disadvantage of being unreliable due to their large power consumption and relatively short lamp life.

In addition, a display device that displays numbers and the like by rotating a display element painted in black and white has a drawback that its driving mechanism is complicated.

The purpose of this invention is to provide a device suitable for use with this type of display device having a simple structure.

This idea attempts to display a display by inverting a plate-shaped display element to its back side.

An embodiment of this invention will be described in detail below with reference to the drawings.

FIG. 1 shows an embodiment of the invention, in which one unit of the display is shown.

In the figure, 1 indicates a box-shaped case, and the front surface of the case 1 serves as a display surface, into which a transparent plate 2 is fitted.

3 indicates a plate-shaped display element, and when this plate-shaped display element 3 is moved back and forth between the display surface 2 and the back plate 4 of the case 1 and viewed through the display surface 2, the display element 3 is in close contact with the display surface. When the front side, for example, the yellow side is facing, and the back plate 4 is in close contact with the back plate 4, the back side, for example, the black side is visible.

For this purpose, a pair of bearings 5-5 are attached to both sides of the display element 3, as shown in FIG. A pair of levers 6-6 are rotatably attached.

In this example, the lever 6-6 is a round bar bent into a U-shape.
Both legs are levers 6-6, and both free ends are bearings 5-5.
The case where the bearing is installed is shown.

The portion 7 connecting the lever 6-6 is supported by a bearing 8 formed on the top plate of the case 1, and the lever 6-6 connects the display element 3.
is rotatably supported around the support point of the lever 6-6.

The display element 3 is moved to the display surface 2 by the rotational movement of the lever 6-6.
The plate surface is in close contact with the back plate 4 and its position is the lever 6-6.
is the maximum deviation position.

A mechanism is provided for causing the plate surface of the display element 3 to face the opposite side at both of these maximum deflection positions.

This example shows a case where the cam plate 9 is provided along the direction of rotation of the lever 6-6.

The cam plate 9 is attached to the bottom surface of the case 1.

The cam plate 9 has inclined surfaces 9 a and 9 b at the end facing the display surface 2 and the back plate 4;
, the lower edge of the display element 3 is lifted upward, and when the lever 6-6 passes the bottom dead center, the display element 3 can assume a posture perpendicular to the display surface 2 and the back plate 4. do it like this.

At this time, the bifurcated body 1 protruding from the back surface of the display element 3
0 engages with a pin 11 protruding from the side surface of the cam 9, and due to this engagement, the plate surface of the display element 3 is turned in the opposite direction, and the display surface 2
Or it is pressed against the back plate 4.

Therefore, the front side of the display element 3 painted yellow, for example, is the display surface 2.
and the lever 6 when viewed through the display surface 2.
When the display element 3 is brought into close contact with the display surface by the rotation of -6, the color appears yellow, and when the display element 3 is brought into close contact with the back plate, the color appears black.

The drive mechanism for this display element may be any mechanism that rotates the lever 6-6, and this example shows a case in which it is driven by magnetic attraction means.

That is, as shown in FIG.
A movable plate 15 is provided opposite to the iron core 13 of the movable plate 15.
A magnetic body, for example, a permanent magnet 16 is attached at a position facing the.

The movable plate 15 is supported by a hinge or the like at the free end of a support plate 17 protruding from the back plate 4 so as to be rotatable toward the magnetic attraction means 14. For example, a spring attached to the hinge moves the movable plate 15 toward the magnetic attraction means 14. A hole is formed in the free end of the movable plate 15 so that the drive shaft 18 is rotated away from the lever 14, and a drive shaft 18 is connected to the hole in the middle of the lever 6-6.
A stopper 19 is inserted into the shaft 18 and attached to the end of the shaft 18.
The drive shaft 18 is always biased in the direction of being pulled out from the case 1 through the.

On the other hand, a boss 20 is attached to the middle of the shaft 18, and a spring 21 is inserted between the boss 20 and the movable plate 15, so that the free end of the movable plate 15 is elastically pressed toward the stopper 19 by the spring 21.

The permanent magnet 16 has an NS pole magnetized in the direction of attraction of the magnetic attraction means 14 .

In the illustrated example, the surface facing the iron core 13 is the N pole, and the opposite surface is the S pole.

By configuring the drive mechanism as described above, for example, when the coil 12 is excited so that the tip of the iron core 13 of the magnetic attraction means 14 becomes the S pole, the magnet 16 is attracted to the iron core 13.

Therefore, the movable plate 15 is instantaneously pivoted counterclockwise, and the magnet 16 is attracted and held by the iron core 13.

Although the biasing force of the movable plate 15 is once accumulated in the spring 21 and the spring 21 is compressed and deformed instantaneously, the shaft 18 is gradually pushed into the case 1 by its restoring force.

When the shaft 18 is inserted into the case 1, the lever 6-
6 is rotated clockwise in the illustrated example using a bearing 8 as a fulcrum, and presses the display element 3 against the display surface 2 .

Therefore, yellow is displayed on the display surface 2 in this example.

By using the magnetic body 16 attached to the movable plate 15 as a permanent magnet, the excitation current of the coil 12 can be cut off after the magnet 16 is attracted, and even if the excitation current is cut off, the magnet 16 remains in the iron core 1.
3 and the yellow display state is maintained.

Next, in order to reverse the yellow display state to the black display state, excitation may be performed so that the tip of the iron core 13 becomes the north pole.

In this way, a repulsive force is generated between the iron core 13 and the magnet 16, and the magnet 16 is released from the iron core 13 and returns to its original position.

Therefore, the shaft 18 also moves in the direction of being pulled out from the case 1, and the display element 3 is brought into pressure contact with the back plate 4.

Therefore, the back surface of the display element 3 painted black can be seen from the display surface.

As described above, according to the present invention, for example, a yellow surface can be displayed in close contact with the display surface 2, so that the yellow display surface can be viewed from a wide range.

Moreover, the ratio of the area of the display surface to the area of the display element 3 can be made sufficiently close to 1.

For example, in the above description, the display element 3 is shaped like a disk, but it can also be shaped into a shape that is approximately the same as the shape of the display surface, for example, a square.

In this case, the area of the display surface 2 and the area of the display element 30 can be made approximately equal, resulting in good display efficiency.

Further, by using the permanent magnet 16 as the magnetic body 16 attached to the movable plate 15, there is an advantage that the excitation current only needs to flow when changing the display, and the power consumption for driving can be reduced.

Furthermore, when the magnet 16 is attracted to the iron core 13, the attraction force is temporarily stored in the spring 21, and the display element 3 is moved by the restoring force of the spring 21, so that only a small amount of electric power is required for attraction.

Further, the drive mechanism may be constructed as shown in FIGS. 3 to 5.

In this example, the levers 6-6 are rotatably attached to the bottom of the case 1, and each lever 6-6 is supported by a support 24 as shown in FIG. 5, and the magnetic poles are opposite to each other. A pair of magnets M19M2 and M1'9M2' are attached so that the magnets attached to the opposite levers have the same magnetic pole surface.

An electromagnet 22 constituted by winding a coil around a saturable core made of Alnico or the like is provided at a position held between the levers 6-6.

When the lever 6-6 is biased toward the display surface 2, the magnets M2 and M2' are opposed to both ends of the electromagnet 22, and when the lever 6-6 is biased toward the opposite side, the magnets M1 and M1' are opposed to both ends of the electromagnet 22. A magnet M19M1' is mounted on the lever 6-6 by reversing the magnetic poles of the electromagnet 22.
and M2. The lever 6-6 is pivoted toward the display surface 2 side and the back surface 4 side by the attraction and repulsion force between M2' and the electromagnet 22.

In this case, by using a saturable core such as alnico as the core of the electromagnet 22, the excitation current for reversing the magnetic pole is pulsed, and by once reversing the magnetic pole with the pulse current, the magnetic pole can be held at all times. There is no need to keep it excited.

Furthermore, by attaching the lever 6-6 to the bottom side of the case 1, when the display element 3 is pressed against the display surface 2 and the back surface 4, the pressing force increases due to the weight of the display element 3, and the magnets M1 and Ml' Even if the attraction force between M29M2' and the electromagnet 22 is small, the display element 2 can be brought into sufficient pressure contact with the display surface 3 and the back surface 4.

In this example, the cam 9 described in FIG.
By this, the plate surface of the display element 3 is inverted.

Further, a case is shown in which a roller 23 is attached to the pin 11 in order to reduce the frictional resistance with the bifurcated body 10.

As mentioned above, according to this invention, two
For example, by arranging a large number of display units in a matrix and changing the display of appropriate units to yellow or black, for example, yellow numbers on a black background can be provided. It can be displayed.

It is also possible to display black numbers on a yellow background, which is suitable for use, for example, when displaying the time on the wall of a building.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing one embodiment of this invention, Fig. 2 is an exploded perspective view for explaining the main parts of this invention, and Figs. 3 and 4 show other embodiments of this invention. The sectional view and FIG. 5 are enlarged perspective views of the main parts thereof.

Claims (1)

[Scope of utility model registration request] A lever is rotatably attached to the side edge of the plate-shaped display element, and the lever is rotatably attached to a fixed part to support the plate-shaped display element rotatably about the support point of the lever. A display device having a mechanism for reversing the plate surface of the display element when the display element rotates around the support point of the lever, so that the front and back sides of the display element are displayed according to the rotation of the lever. .