JPH073624B2 - Display element - Google Patents

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to a display element that constitutes a pixel of a large display device.

[Prior art]

Conventionally, there is known a large-sized display device used for the purpose of displaying a score or a player's name in a sports arena or displaying the time and temperature on the outer wall of a building. Each pixel of this type of display device is composed of independent display elements. As display elements, those disclosed in, for example, Japanese Utility Model Publication No. 59-43586 and Japanese Patent Publication No. 55-134887 are known. These display elements are provided with electromagnetic drive means having a frame that swings like a pendulum, and are configured so that the display plate slides through a complicated link mechanism that constitutes a so-called Scott Russell mechanism together with the display plate. There is.

[Problems to be Solved by the Invention]

In the above-mentioned conventional structure, in order to use the Scott-Russell mechanism, a plurality of shaft fulcrums are provided in the link mechanism, and these shaft fulcrums are provided in the case in which the electromagnetic drive means, the link mechanism, the display board, etc. are installed. It is necessary to provide. That is, since the case cannot be removed and used, the distance between the display plates is increased by the thickness of the case, and the display plates cannot be arranged at a high density. Moreover, since a case must be provided for each display plate, a large number of cases are required to form a large-sized display device, resulting in a high cost. The present invention is intended to solve the above problems, and by making the display unit that drives the display plate independent of the case, it can be used only in the display unit without using the case. The present invention intends to provide a display element in which display plates can be arranged at a high density and the cost for the case can be reduced.

[Means for Solving the Problems]

To achieve the above object, in the structure of claim 1, a rod-shaped iron core having a rear end fixed to a base and a coil wound around the iron core,
A display plate whose front side is the display side, a permanent magnet fixed to at least a portion of the back face of the display plate facing the front end face of the iron core, a bearing provided at the front end part of the iron core, and an energization of the coil. The magnetic force acting between the iron core and the permanent magnet causes the surface of the display plate to rotate between a position substantially parallel to the front end face of the iron core and a position substantially orthogonal to the front end face of the iron core. It is characterized by comprising a rotating shaft for axially mounting the display plate on a bearing at a portion different from the center line of the iron core in the longitudinal direction. According to the configuration of claim 2, the display element according to claim 1 is housed and a case having at least a front surface is provided, and the case has a display plate substantially parallel to the front end surface of the iron core and substantially the front surface of the case. The front part of the display plate when it is parallel is transparent, and the corner part formed in the transparent part is a curved surface with a relatively large radius of curvature. According to the structure of claim 3, the display element according to claim 1 is housed, and at least a front surface is provided with a transparent case. The display plate is substantially parallel to the front end surface of the iron core and is substantially parallel to the front surface of the case. It is characterized in that the rear part is opaque with respect to the display plate when it is parallel.

According to the structure of claim 1, the bearing provided at the front end portion of the iron core and the rotary shaft for pivotally mounting the display plate on the bearing at a portion different from the longitudinal centerline of the iron core are provided. Accordingly, it can be used alone without using a member such as a case that covers the display plate or the drive mechanism of the display plate. That is, when a display device is constructed using a plurality of display elements, the bases can be arranged at intervals enough to secure a space in which the display plate can be rotated. The arrangement density of the display plates can be increased by the amount corresponding to the thickness, and the cost can be reduced by the case. Further, since the display plate is axially attached to the iron core attached to the base via the bearing, a case as a means for axially attaching the display plate unlike the conventional configuration is unnecessary, and the display element and the Even if a case is provided to cover the drive mechanism, it can be assembled independently of the case,
Assembly work becomes easy. According to the structure of claim 2, the case for accommodating the display element of claim 1 is provided, and the front side of the display plate in the display state in the case is transparent, and the corner portion formed in the transparent portion is a curved surface. Therefore, as compared with the case where no curved surface is formed in the corner portion, a shadow is less likely to be formed on the display plate, and the display can be made easier to see. According to the configuration of claim 3, the case for accommodating the display element of claim 1 is provided, and the rear side of the display plate in the display state is made opaque in the case. Therefore, the back surface of the display plate can be seen from the outside in the display state. It doesn't happen and it looks good.

【Example】

FIG. 1 shows a state in which the display unit 1 is installed in a case 2, and FIG. 2 shows a state in which the case 2 is removed. The display unit 1, as shown in FIG. 1 and FIG.
A coil-shaped iron core 12 is provided upright on a base 11 made of synthetic resin, and a coil 14 is wound around a coil bobbin 13 formed integrally with the base 11 and having the iron core 12 inserted therethrough. Coil 14
Two windings are connected in series, or one winding is provided with a tap in the middle, and has three terminal wires. Each terminal wire is respectively connected to three terminal pins 15 projecting from the surface of the base 11 opposite to the surface on which the iron core 12 is erected. A substantially U-shaped bearing 16 is integrally formed at an end of the coil bobbin 13 different from the base 11. bearing
Bearing holes 16a are formed in both leg pieces of the 16
The tip of the iron core 2 projects from the center of the horizontal piece. Bearing hole 16
a is provided at a position displaced from the center line of the iron core 12.
A rotary shaft 18 provided on the back surface of the display plate 17 is inserted into the bearing hole 16a from the inside of the leg piece, and the display plate 17 is rotatably attached to the iron core 12. The surface of the display board 17 may be printed or painted for display, or a sheet may be attached. Display board
A pair of protrusions 17a is provided on the back surface of the protrusion 17, and a pair of rotary shafts 18 is provided on one side of each protrusion 17a. Also, both protrusions
Permanent magnets 1 magnetized in the thickness direction of the display plate 17 are provided between 17a.
9 is provided. According to the above configuration, one of the three terminal pins 15 is used as a common terminal, and the iron core is connected to either one of the remaining terminals.
When the electricity is applied in the direction in which 12 attracts the permanent magnet 19, the display board 17
Is substantially parallel to the tip surface of the iron core 12. At this time,
By contacting the back surface of the display plate 17 with the front surface of the bearing 16,
The rotation of the display board 17 is restricted. Further, when electricity is applied between the common terminal and the other of the remaining terminals in a direction in which the iron core 12 repels the permanent magnet 19, the display plate 17 falls down at a position substantially perpendicular to the tip surface of the iron core 12. . At this time, the rotation of the display plate 17 is restricted by the back surface of the display plate 17 coming into contact with the upper surface of the bearing 16. Therefore, if the front side of the iron core 12 is the front side (the left side in FIG. 1), the surface of the display plate 17 may be seen or hidden from the front as the coil 14 is energized. In this way, the display state and the non-display state are switched. The case 2 is formed by combining a rectangular tube-shaped case body 21 having one bottom surface opened and the other bottom surface closed, and a transparent cover 22 that covers the opening surface of the case body 21 in a closed manner. . The base 11 is fitted in a recess 23 provided on the inner surface of the bottom wall of the case body 21, by a fixing screw 24 inserted from the outside of the case body 21 through the bottom wall of the case body 21,
It is fixed to the case body 21. In addition, the case body 21
On a portion of the outer surface of the bottom wall surrounding the base 11, a protrusion 25 having a cylindrical outer surface is formed. The terminal pin 15 in the display unit 1 is pulled out from the case body 21 through the tip surface of the protrusion 25. The transparent cover 22 has a corner portion formed to have a curved surface with a relatively large radius of curvature. In this way, by forming the transparent cover 22 into a curved surface, it is possible to reduce the shadow of the transparent cover 22 on the display plate 17. By the way, the case main body 21 is formed of an opaque material, and the opening surface of the case main body 21 makes the display plate 17 substantially flush with the iron core 12 at a position where the display plate 17 is substantially parallel to the tip end surface of the iron core 12. It is formed so as to be located on a slightly closer side. This makes it possible to make the display plate 17 visible as much as possible from the front direction, while making the back surface of the display plate 17 invisible. When fixing the display element configured as described above to the mounting plate 3, as shown in FIG. 3, an annular waterproof packing 31 fitted around the protrusion 25 is used. Waterproof packing 31
Is an integrally formed inner ring 32 that is in close contact with the protrusion 25 and an outer ring 33 that is formed to have a diameter that increases toward the mounting plate 3 and that is made of an elastic material. The thickness of the waterproof packing 31 in the protruding direction of the protrusion 25 is set to be slightly larger than the protrusion amount of the protrusion 25. However, the mounting plate 3 is formed with a mounting hole 34 through which the terminal pin 15 and the fixing screw 24 are exposed, and the waterproof packing 31 is fitted around the protrusion 25, and the mounting plate is located outside the mounting hole 34. When the mounting screw 35 is screwed onto the tip surface of the protrusion 25 through the water seal 3, the waterproof packing 31 is compressed between the case body 21 and the mounting plate 31, and water from the front surface side of the mounting plate 31 to the rear surface side is compressed. Intrusion can be prevented. When a plurality of display elements are collectively covered with a large transparent plate, the case 2 can be removed and the display unit 1 alone can be used. That is, as shown in FIG. 2, the terminal pins 15 of the display unit 1 may be electrically connected to the printed wiring board 36, and the base 11 may be mechanically fixed to the printed wiring board 36 with the fixing screws 24. If used in this way, Case 2
The number of display units 1 per unit area can be increased as compared with the case of using. In the above embodiment, the rotary shaft 18 is provided on the display plate 17, and the bearing
Although 15 is provided in the coil bobbin 13, conversely, a bearing may be provided in the display plate 17 and a rotating shaft may be provided in the coil bobbin 13.

【The invention's effect】

As described above, in the structure of claim 1, the bearing provided at the front end portion of the iron core and the rotating shaft for pivotally mounting the display plate on the bearing at a portion different from the longitudinal centerline of the iron core are provided. Accordingly, it can be used alone without using a member such as a case that covers the display plate or the drive mechanism of the display plate. That is, when a display device is constructed using a plurality of display elements, the bases can be arranged at intervals enough to secure a space in which the display plate can be rotated. The arrangement density of the display plates can be increased by the amount corresponding to the thickness, and the cost can be reduced by the case. Further, since the display plate is axially attached to the iron core attached to the base via the bearing, a case as a means for axially attaching the display plate unlike the conventional configuration is unnecessary, and the display element and the Even when a case is provided to cover the drive mechanism, the case can be assembled independently of the case, which has the advantage of facilitating the assembling work. According to the structure of claim 2, the case for accommodating the display element of claim 1 is provided, and the front side of the display plate in the display state in the case is transparent, and the corner portion formed in the transparent portion is a curved surface. Therefore, as compared with the case where no curved surface is formed in the corner portion, a shadow is less likely to be formed on the display plate, and the display can be made easier to see. According to the configuration of claim 3, the case for accommodating the display element of claim 1 is provided, and the rear side of the display plate in the display state is made opaque in the case. Therefore, the back surface of the display plate can be seen from the outside in the display state. It doesn't happen and it looks good.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention, FIG. 2 is an exploded perspective view showing a state in which the same case is removed, and FIG. 3 is a state in which the case is attached to a mounting plate. It is an exploded perspective view shown. 1 ... Display unit, 2 ... Case, 11 ... Base, 12 ...
… Iron core, 14 …… Coil, 16 …… Bearing, 17 …… Display plate, 18
…… Rotary shaft, 19 …… Permanent magnet, 21 …… Case body, 22…
… Transparent cover.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Noritaka Marui 1-36 Yokobori-cho, Nakagawa-ku, Nagoya, Aichi Nagoya Electric Industry Co., Ltd. (56) References: 61-121484

Claims (3)

[Claims] 1. A rod-shaped iron core having a rear end fixed to a base and a coil wound around it, a display plate having a front surface as a display side, and at least a front end surface of the iron core on the back surface of the display plate. The permanent magnet fixed to the part, the bearing provided at the front end of the iron core, and the magnetic force acting between the iron core and the permanent magnet when the coil is energized causes the surface of the display plate to be the front end surface of the iron core. A rotating shaft for pivotally mounting the display plate on the bearing at a position different from the longitudinal centerline of the iron core so as to rotate between a position substantially parallel to the iron core and a position substantially orthogonal to the front end face of the iron core. A display device comprising: 2. A display case according to claim 1, wherein the display element is housed and at least a front surface is transparent, and the display plate is substantially parallel to the front end surface of the iron core and substantially parallel to the front surface of the case. The display element is characterized in that a front part of the display plate is transparent, and a corner part formed in the transparent part is a curved surface having a relatively large radius of curvature. 3. The display device according to claim 1 is mounted and at least a front surface is provided with a transparent case, wherein the display plate is substantially parallel to the front end surface of the iron core and substantially parallel to the front surface of the case. The display element is characterized in that the rear portion is opaque with respect to the display plate.