JPH0455719B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a fraud prevention mechanism for a pachinko game machine.

``Conventional technology'' Pachinko balls in pachinko game machines are made of steel, which is a magnetic material, so a magnet is placed close to the front glass of the game machine to guide the trajectory of the pachinko balls at specific locations such as the safe hole, allowing unauthorized players to award balls. What you're getting is still happening.

Conventionally, in order to prevent the above-mentioned fraud in pachinko game machines, a highly sensitive reed switch was installed at a position equivalent to the safe hole on the back of the game machine, and the switch was activated when the above-mentioned fraud occurred. The circuit was closed and a warning signal was issued.

"Problems to be Solved by the Invention" However, with the above conventional technology, there is a considerable distance from the front glass of the game machine to the back of the game machine, and even highly sensitive reed switches cannot always operate reliably. In particular, if even a small amount of magnetic material is used near the safe hole, the magnetic path of the magnet will be disturbed and the sensitivity of the reed switch will decrease, making it impossible to achieve the desired effect and making it difficult to install the reed switch one by one. There was a problem with having to do some wiring.

The present invention has been made in view of these conventional problems, and it is an object of the present invention to provide a fraud prevention mechanism for pachinko game machines that reliably prevents fraud and does not require much effort to install or remove. The purpose is

``Means for Solving the Problems'' The gist of the present invention for achieving the above object is to provide a transparent conductive film on the inner surface of the front glass body of a pachinko game machine as a first electrode. , a second electrode is provided close to the inside of the first electrode, which is attracted by the magnet and becomes conductive in contact with the first electrode when a magnet is brought close to the glass body; A fraud prevention mechanism for a pachinko game machine is provided, characterized in that an alarm circuit is provided which operates in response to the conduction state when the two terminals come in contact with each other and become conductive.

``Function'' When a cheater brings a magnet close to the front glass body of a pachinko game machine, the second electrode provided close to the inside of the glass body is attracted by the magnet and drawn to the inside of the glass body. It contacts the conductive film on the surface and becomes conductive, activating the alarm circuit and emitting an alarm signal.

The above-mentioned signal can be used not only as a warning means but also as a means for stopping or discontinuing the ejection of prize balls, and fraud prevention is reliably carried out.

"Embodiments" Various embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a first embodiment of the invention.

In this embodiment, the board 11 of the pachinko game machine 10
Among the protective glasses that cover the first glass 21, a transparent conductive first electrode 25 is attached to the entire inner surface of the first glass 21, and is made of, for example, a tin oxide film, an indium oxide film, or the like.

On the other hand, a second glass 22 near the first glass 21
A second electrode 26 is provided between the two electrodes, and the configuration of the second electrode 26 can be made into various forms as described below.

In the first form, thin wires, wires, or dots made of a magnetic material that can be attracted by a magnet are disposed on a transparent, elastic, conductive thin film by vapor deposition, printing, pasting, coating, or the like. Further, a magnetic material may be mixed in advance into the conductive thin film itself.

There are various types of such conductive thin films, such as those made by processing a polymer electrolyte onto the surface of a polymer film.

As a second form, a group of thin wires made of a magnetic material are provided in one direction or in a grid pattern on the surface of a transparent and elastic non-conductive thin film facing the first glass 21. Then, these thin line groups are
An electrode 26 is used.

The above-mentioned thin wire group may be attached on the thin film by a method such as vapor deposition, printing, adhesion, or coating.

The non-conductive thin film may be made of polypropylene, polycarbonate or other well-known polymer materials, and is appropriately selected according to the method of attaching the magnetic material.

As a third form, the second electrode 26 is made by stretching a large number of ultrafine wires made of a magnetic material in one direction or in a lattice shape without using a thin film or the like.

A first electrode with both the first and second electrodes 25 and 26 in between.
The glass 21 and the second glass 22 are fitted into a frame (not shown) and attached as the front window 20 of the game machine 10.

Both the first and second electrodes 25 and 26 are connected to a suitable alarm circuit.

Next, the action will be explained.

When a person attempting to commit fraud approaches a magnet from the front window 20 of the game machine 10, the second electrode made of magnetic material is drawn forward and the first glass 2
The first electrode 25 provided on the back surface of the second electrode 1 contacts the first electrode 25, and both electrodes are electrically connected. This activates the alarm circuit and issues an alarm or a function stop signal, or both signals simultaneously, allowing fraud to be quickly detected and prevented.

Since the first and second electrodes 25 and 26 are close to the magnet and are spread over the entire area of the front window 20, if the magnet is brought close to the magnet illegally, the fraud can be detected anywhere, not just in a specific location. I can do it.

2 and 3 show a second embodiment.

In this embodiment, the first electrodes 30 arranged linearly on the back surface of the first glass 21, and the
An elastic transparent thin film 31 is stretched between the glass 22 and the side facing the first electrode 30 of this thin film is made of a magnetic material, and a second electrode 32 is arranged in a direction crossing the line group of the first electrode 30. A group of thin lines are provided.

Both electrodes 30 and 32 constitute a switch matrix whose intersections form contact points, and external connection terminals 33 and 34 are arranged at the ends of each line.

The external connection terminals 33 and 34 are connected to an alarm circuit (not shown).

When a person who intends to commit fraud brings a magnet close to the surface of the first glass 21, the second electrode 32 is attracted and the contacts at that position become conductive. As a result, the contact at the relevant position becomes conductive, and the alarm circuit operates to issue an alarm or the like.

In this embodiment, it is possible to know the locations where fraud has occurred using the switch matrix, and it is also possible to know safe holes that are easy to target, trends in fraud, and weak points of the pachinko game machine.

Further, as a modification of the second embodiment, as shown in FIG. 3, the second electrode 32 may be made of a non-magnetic material, and a magnetic material 35 that can be attracted by a magnet may be provided at a specific location.

"Effects of the Invention" According to the fraud prevention mechanism of the pachinko game machine according to the present invention, since the electrodes of the alarm circuit are provided close to the front window and on the entire surface of the window, the operation is reliable, and the magnetic Since the closed circuit is reliable, it is possible to detect fraud not only in a specific place such as the safe hole but also anywhere on the front glass, so that fraud can be reliably detected and fraud can be prevented.

[Brief explanation of the drawing]

Each figure shows various embodiments of the present invention.
The figure is a partial sectional view of a pachinko game machine equipped with a fraud prevention mechanism according to the first embodiment, FIG. 2 is an exploded perspective view of a switch matrix constituting the fraud prevention mechanism according to the second embodiment, and FIG. It is also a front view. 10... Pachinko game machine, 11... board, 20...
Front window, 21...first glass, 22...second glass,
25, 30...first electrode, 26,32...second electrode.

Claims (1)

[Scope of Claims] 1. A transparent conductive film is disposed on the inner surface of the front glass body of a pachinko game machine to serve as a first electrode, and when a magnet is brought close to the glass body, the first electrode is attracted by this magnet. A second electrode that is in contact with the electrode and conductive is provided close to the inside of the first electrode, and when the first electrode and the second electrode are in contact and are in a conductive state, an alarm circuit is activated in response to the conductive state. A fraud prevention mechanism for a pachinko game machine is provided.