HU221770B1 - Permanent magnet display elements for indicating arrangements, particularly for electromagnetically excited passive element indicators to display in darkness - Google Patents

Abstract

The subject of the invention relates to permanent magnetic signal display elements, especially suitable for display in the dark for passive battery display devices with electromagnetic excitation, which in the signal display element - on the base plate (1) can be rotated on bearings around pivot shaft(s) (2), equipped with a permanent magnet, suitable for displaying two different information, preferably two different colors tilting plate(s) (3) are arranged, furthermore - the color of one, preferably dark, surface of the tilting plate(s) (3) is the same as the color of the base plate (1), and - of the base plate (1) the tilting plate(s) (3) from the base plate ( 1) shaped cut-outs (8) corresponding to the shape and size of the tilting plate(s) (3) are placed on the part(s) covered by a different, preferably light-colored surface(s), while - the base plate (1) has the on the opposite side of the signal display surface - at least one excitation electromagnet (4) is placed per signal display element. The essence of the invention is that - on the opposite side of the base plate (1) to the signal display surface, the coil head(s) (6) of the coil body(s) of the exciting electromagnet(s) (4) are preferably suitable for completely covering the cutout(s) (8) (ne)k of the base plate (1) to the opposite side of the signal display surface. ŕ

Description

EXTRACT

BACKGROUND OF THE INVENTION The present invention relates to permanent magnetic signal display elements, in particular to electromagnetic excited passive battery display devices, also suitable for display in the dark, comprising:

- on the motherboard (1) there are arranged tilting discs (3) with a permanent magnet which are pivotally rotatable about a tilting axis (s) (2), and which are capable of displaying two different information, preferably two different colors, and

- one of the surfaces, preferably dark, of the tilting plate (s) (3) has the same color as the base plate (1), and

- shaped cuts corresponding to the shape and size of the plate (s) (8) on the part (1) of the base plate (1) other than the base plate (1), preferably covered by a light colored surface (8) (8) ) is placed while

- on the side of the motherboard (1) opposite the display surface - at most ///

Figure 1

HU 221 770 B1

The scope of the description is 6 pages (including 1 page figure)

An excitation electromagnet (4) is located below.

The essence of the invention is that

- the winding head (6) of the winding body (s) of the exciter electromagnet (s) (4) on the side opposite to the signal display surface (6) is preferably adapted to fully cover the shaped cut-out (s) (8) to the side of the system board (1) opposite the signal display surface.

FIELD OF THE INVENTION The present invention relates to permanent magnetic signal display elements, in particular to electromagnetic excited passive battery display devices, also suitable for display in the dark,

- a tilt plate (s) for rotating about the tilting axis (s), which is pivotally mounted on a base plate and is provided with a permanent magnet and is capable of displaying two different information, preferably two different colors;

- one of the surfaces, preferably dark, of the tilt plate (s) has the same color as the base plate, and

- a portion (s) of the base plate other than the tilt plate (s), preferably covered by a light colored surface (s), are provided with shaped cutout (s) corresponding to the shape and size of the tilt plate (s),

- at least one excitation electromagnet per signal display element is disposed on the side of the system board opposite to the signal display surface.

As is known, passive elemental so-called pixel display devices display information by displaying an appropriate combination of dark and light color pixels. The disadvantage is that in its simplest design it can only be used during the day. For display in the dark, so-called light-point signaling devices with active elements are used, which, however, have little or no ability to display daytime information.

In practice, there are many types of passive display elements. One of these is the so-called tilt plate solution, wherein a tilt plate which is pivotable about a pivot axis parallel to the base plate covers part of the base plate on one side of the pivot axis and sometimes on the other side of the pivot axis. The two sides of the flap are adapted to carry two different information, preferably two different colors, generally one color black and the other light, such as white or light yellow. The portion of the motherboard on the two sides of the tilting axis is also adapted to carry two different information, preferably two different colors, such that the information or colors are the same as the information lying on the motherboard side of the tilting plate covering the respective motherboard portion. Such a display device is described, for example, in patent specification HU 157 250.

Attempts have been made to use passive battery information display devices at night. There are basically two ways to solve this problem. By illuminating it from the front or by illuminating it from the back, somehow forwarding the light.

An example of front illumination is disclosed in GB 2,038,526 A wherein a light from a linear light source, such as a fluorescent lamp, concealed beneath the display surface, extends from a reflection surface that is perpendicular to the display surface to a vertical display surface, the reflecting surface and the image formed on the reflecting surface become visible in the dark. Behind the light source is a mirror with a parabolic cross-section, which utilizes the back light emitted from the linear light source. However, direct illumination from the front only allows for uneven illumination of the surface.

If the need for front-lighting is only temporary, such as when displaying information along motorways, it is sufficient to coat the display surfaces of the pixels with fluorescent material so that the information can be recognized by the light of the car's reflectors.

Front illumination, especially in the case of signal display elements with reflex film, can provide good and relatively recognizable information. However, in the case of particularly large information display surfaces, positioning the light sources without interfering with the reading of the information is very difficult, and if the light source is placed overhead, the lower part of the surfaces will be obscured and read only in close proximity. Circular illumination would be best, but this solution requires a relatively large amount of energy. However, if the information display is on a moving vehicle, the light sources from the front shall be placed so close to the display surface that the illumination shall extend only to a very small area.

A solution for backlighting is described, for example, in Application Specification No. HU 1847, wherein parts of the system board are made of light-transmitting material and can be covered by rotating flaps. The side of the tilt plate covering the translucent motherboard portion has the same color as the light source behind the translucent motherboard portion, while the other side of the tilt plate matches the color of the rest of the motherboard, usually dark, such as black.

This solution is indeed capable of displaying information in the dark, but it has many disadvantages. On the one hand, during the day, when the light-transmitting film is not backlit,

EN 221 770 BI is seen in the goblet and is much fainter than the color of the swivel element. This means that instead of two types of information, three appear, which in many cases is extremely confusing. On the other hand, while the back illumination makes half of the surface of the signal point or line visible after dark, the other half is only indirectly visible by means of secondary radiation emitted from the light beam and of substantially lower intensity.

Recently, backlighting has come to the forefront in devices with small raster dots per pixel, which are suitable for passive battery signaling in daytime mode, while backlighting at night is done with LEDs. After dark, they also provide the right light for the environment. Such a solution is described, for example, in patent application HU P 98 01482.

While this provides a round-the-clock operation, it is very costly, since the implementation of the information display device involves virtually two complete control and display systems.

The manufacturing and installation of passive element display devices is quite labor-intensive, and one of the main goals of manufacturers is to make production and assembly economical in order to remain competitive. One of the most problematic tasks in manufacturing is coloring the system board in places where the system board is light in color, unlike the dark base color. Colors applied by painting or other technologies fade over time, reducing the life of the equipment. With respect to so-called matrix boards, there is known a solution disclosed in patent application HU 219 288, wherein a board consisting of row baskets or column bases or a plurality of rows and columns of baseboards is formed so that the baseplate has a it corresponds to the shape and size of the tilt plate and occupies a position on the base plate which is covered by a surface color other than the base plate. Behind the motherboard, a strip of foil was placed between the motherboard and the shaped bodies forming the iron magnet core heads of the exciter, the color of the surface facing the signal display surface being the same color as the surface of the tilt plate. An elastic plate projection with a single window for each pixel is formed on the two longitudinal sides of the column plates or row plates, in which the heads of the iron core of the electromagnets are snap-in.

This solution undoubtedly offsets the reduction in lifetime due to tinting and facilitates installation, but has the disadvantage of not allowing illumination.

It is an object of the present invention, while retaining the advantages of the latter solution, to provide a solution which enables the provision of back lighting by economical means.

The invention is based on the discovery that if the stationary iron core of the excitation electromagnet is conventionally formed by not increasing the cross-section of the end of the motherboard, but supporting the excitation coil with the thread body, so that the side of the thread body and at least a portion of the thread body is made of light-transmitting material and is colored in the same color as the light side of the flap, the thread bodies can be snap-in and the structure is simplified by omitting the film strips.

The essence of the invention is that

- the winding head (s) of the coil (s) of excitation electromagnet (s) on the side opposite to the signal display surface of the motherboard are preferably fitted to cover the opposite face of the motherboard on the shaped cut-out (s), and

- the bobbin head (s) of the bobbin body (s) are made of a light-transmitting material.

DETAILED DESCRIPTION OF THE INVENTION The invention will be described in more detail with reference to the embodiments shown in the drawings, in which: Fig. 1 is an exploded axonometric view of a series of signal display elements according to an embodiment of the invention;

Fig. 2 is a side view of another embodiment of a display element, while Fig. 3 is a top view of the display element of Fig. 2.

1, there is a tilt plate 3 for displaying two different pieces of information, preferably two different colors, on the base plate 1 of the base plate 1, which is pivotally rotatable about pivot axes 2, generally with a permanent magnet not shown in the figures. One of the tiles 3 has a preferably dark colored surface which has the same color as the motherboard. At least one excitation electromagnet 4 per signal display element is disposed on the side of the base plate 1 opposite to the signal display surface. For technical reasons, only the electromagnet 4 is shown schematically with its coil 5 and its reel 6. In the signal display element row, the pivot axes 2 of the tilting plates 3 are aligned, so that successive signal display elements in the battery row have common bearing housings 7.

The base plate 1 has cut-outs (8) of a shape and size corresponding to the shape and size of the tumbler plate (s), which are located on portions of the base plate (1) covered by a different color surface (s) of the tumbler plate (s). (s). This means that if the tilting plate (s) 3 cover the 8 cut-out (s), then nothing of the 8 cut-out (s) is visible, but within the 8 cut-outs (s) (s) away.

On the side opposite to the signal display surface of the motherboard 1, the winding head (s) of the coil (s) of the exciter electromagnet (s) 4 are preferably shaped

EN 221 770 Bl fits perfectly to the side of the motherboard 1 opposite to the signal display surface. The reel body (s) according to the invention are formed from 6 light-transmitting materials. The light-transmitting material may be water-clear, such as a window glass, or tinted, preferably tinted to the light color of the flap (s). If the bobbin head (s) is made of a clear light-transmitting material, a transparent film (9) of transparent material (other than the base board), preferably of a light color, is provided between the bobbin head (6) and the base plate (1). nak).

The shape of the bobbin head (s) 6 may be conventionally circular in the use of foil 9 since its function is essentially limited to clamping the foil 9 to the base plate 1. If the bobbin head (s) 6 are colored, then the bobbin head (6) does not necessarily have to cover the entire 8 cutouts. In this case, if the bobbin head (s) 6 are circular, the light at the corners of the cut-out (s) 8 is directly transmitted through the cut-out (s), however, it is not disturbing and even increases the intensity of illumination.

On the two opposite sides of the signal display element (s) parallel to the tilting axis 2, on the electromagnetic side 4 of the base plate exciter 4, the plates 10 are fastened to the base plate 1, the windows 10 being inserted into the winding head 6 , are designed for snap-fastening and clamping to the motherboard 1.

Figures 2 and 3 show another embodiment of the invention, wherein excitation electromagnets 4 are known per se and are fastened to the motherboard 1 in a manner not shown in the figures. Behind the cut-out (s) of the motherboard (1), 12 light sources (12) are arranged on the side of the exciter (4) of the motherboard (1). The light source (s) 12 are not shown in Figure 1 for technical reasons.

According to the present invention, the signal display elements and the signal display devices made from them have the same or better technical parameters of the known back light devices and can be manufactured by simpler installation, and in a much more economical way.

Claims (5)

PATENT CLAIMS 1. Permanent magnetic display units, in particular for passive battery display devices with electromagnetic excitation, also suitable for display in the dark, comprising: - a tilt plate (s) rotatably mounted on a motherboard with a permanent magnet rotatable about a pivot axis (s), for displaying two different information, preferably two different colors, and - one of the surfaces, preferably dark, of the tilt plate (s) has the same color as the base plate, and - a portion (s) of the base plate other than the tilt plate (s), preferably covered by a light colored surface (s), are provided with shaped cutout (s) corresponding to the shape and size of the tilt plate (s), - at least one excitation electromagnet per signal display element is disposed on the side of the motherboard opposite to the signal display surface, characterized in that: - the winding head (6) of the winding body (s) of the exciter electromagnet (s) (4) on the side opposite to the signal display surface (6) is preferably adapted to fully cover the shaped cut-out (s) (8) to the side of the system board (1) opposite the signal display surface, and - the winding head (s) (6) of the bobbin body (s) is made of a light-transmitting material. The signal display element according to claim 1, characterized in that the bobbin head (s) (6) of the bobbin body (s) is made of a clear material, and the bobbin head (s) (6) and the motherboard (1) between them is a film (s) (9) of translucent material of a color other than the base plate (1) of the tilting plate (s) (3), preferably of a light color. The signal display element according to claim 1, characterized in that the winding head (6) of the winding body (s) is made of a transparent material of a color other than the base plate (1) of the tilting plate (s) (3). (s). 4. Signal display elements according to one of Claims 1 to 3, characterized in that the elastic plate projections (11) provided with a window (10) on two opposite sides of the signal display element, on the side of the motherboard (1) excited by electromagnets (4), the windows (10) are adapted to receive, snap, and snap the winding head (6) of the reel body to the base plate, and to clamp it to the base plate (1). 5. Signal display elements according to any one of claims 1 to 3, characterized in that light source (s) (12) are arranged behind the cut-out (s) (8) of the base plate (1) on the side of the base plate (1) exciting electromagnets (4).