JPH02264685A - Electromagnetic wave preventing mechanism of game machine - Google Patents

Abstract

PURPOSE:To prevent the generation of a malfunction even if an electromagnetic wave is generated intentionally or by accident by immersing both faces of glass of the front of a panel into a metallic ion solution of tin, etc., or injecting the solution to the glass surface, drying it and burning it, and forming a thin film of tin oxide. CONSTITUTION:Two pieces of glass are fitted into a panel door 5 of the front of a panel 2, and a thin film of tin oxide preventing an electromagnetic wave is stuck to both faces of glass 6 of its inside. In this case, its thin film is stuck to the glass surface by the following method. First of all, the surface of the glass 6 is immersed into a metallic ion solution of tin, or the metallic ion solution of tin is injected to the glass surface, and thereafter, it is dried at 20-80 deg.C. Subsequently, the dried glass surface is burned at 500-600 deg.C, and thereafter, cooled. Next, by repeating these processes two or three times, a thin film of tin oxide consisting of prescribed thickness is formed. In such a way, the glass 6 obtained by sticking the thin film of tin oxide to both the faces to many layers is fitted into the inside of the panel door 5.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electromagnetic wave prevention mechanism installed inside a game machine such as a pachinko machine to prevent malfunction due to electromagnetic waves.

BACKGROUND TECHNOLOGY Increasingly, conventional gaming machines such as pachinko machines are not only operated mechanically, but are also controlled by circuit boards via sensor means for detecting winning balls provided on the board.

Such devices do not malfunction unless there is a power outage or electromagnetic waves are oscillated from the outside on the circuit board.

Problems to be Solved by the Invention However, recently some electric appliances owned by players generate weak electromagnetic waves, which may cause the sensor or circuit board of the gaming machine to malfunction.

Some players maliciously place a radio device that generates electromagnetic waves on the glass of a circuit board, causing the circuit board to malfunction.
There are some who make it so that winnings are determined, but there is no simple way to prevent this.

Therefore, in view of the drawbacks of the prior art, it is an object of the present invention to provide an electromagnetic wave prevention mechanism that does not cause malfunctions even if a player intentionally or accidentally generates electromagnetic waves.

A means for solving the problem, that is, the present invention, achieves this objective by attaching a thin film of highly electrically conductive tin oxide or the like to the glass surface that covers the board of pachinko machines, etc., without reducing its transparency. achieve.

The following method is used for attachment.

a. After immersing the glass surface in a metal ion solution such as tin or spraying the glass surface with a metal ion solution such as tin, drying at 20 to 80°C.

b. The dried glass surface is fired at 500 to 600°C, and then cooled.

Steps c, a and b are repeated 2 to 3 times to form a thin film of tin oxide having a constant thickness.

Glass with multiple layers of tin oxide or other thin films adhered to both sides is then attached to the panel of a pachinko machine or the like.

Function: In the present invention, the glass to which electromagnetic wave prevention material can be attached is such that when a device that oscillates electromagnetic waves is placed around it, the electromagnetic waves can penetrate inside due to the magnetic shielding effect because there are two thin films on both sides of the glass. prevent intrusion.

As a result, electromagnetic waves do not reach the sensors or circuit boards installed in the gaming machine.

Embodiment The present invention will be explained in detail below according to an embodiment shown in the drawings.

In the figure, 1 is a pachinko game machine, on the front panel 2 of which a large number of winning holes 3 and nails 4 for making ball paths are arranged, and sensors 3a for detecting winnings are installed in several places. It's broken.

A circuit board 10 mounted on the back surface of the panel 2 electronically controls the ejection of winning balls and the operation of the winning ball device (accessories) based on winnings confirmed by the sensor 3a.

In addition, 11 is a display part, and 13 is a handle for releasing balls.

A panel door 5 that opens and closes is pivotally attached to the front surface of the panel 2, and two pieces of glass 6.7 are inserted into the panel door 5.

On both sides of the inner glass 60, thin films 8 and 9 of tin oxide for preventing electromagnetic waves are adhered as shown in FIG.

The thin films 8, 9 are applied to the glass surface in the following manner as described in aw d.

a, Nikkaoctictin (5n(CyH+ acOm
>s) + acetylacetonetin (5n(CaH*)m
(CsHyOm)* ), di-n-butoxytin (5n
Organic tin solutions such as (n-OCJe)n) and/or stannous chloride (5nC1m・2) 1.0)
Glass is immersed in an inorganic tin solution such as nC14) and pulled up at a speed of 10 to 30 cm/1 II in.

b. After lifting, the glass surface is dried at a temperature of 20 to 806C.

A thin film of tin oxide is formed by firing the glass surface dried in steps c and b at a temperature of 500 to 600°C.

Repeat steps d and a-we 2 to 38 times to increase the thickness of the thin film.

The transparency of the glass surface to which this thin film was attached was about 20% lower than that of glass to which no thin film was attached.

Note that step a may be replaced by a step of "spraying the organic tin solution and/or inorganic tin solution onto both sides of the glass to an extent that it does not drip."

Furthermore, if the glass to which the thin film is to be applied is sodium glass, the organic tin and/or inorganic tin solution will react with the sodium ions in the glass, weakening the magnetic shielding effect, so the glass surface should be coated with silicon before step a. 1
2 to prevent the organic tin and/or inorganic tin solution from reacting with the sodium in the glass.

In this example, a tin solution was used as the material for forming the thin film, but the material is not limited to this, and any material may be used as long as it becomes colorless and transparent when dried and fired.

For example, triethoxyantimony (5b(OC=Ha)s
) tri-n-butoxyantimony (5b(n-OC4
H*)s), Nitsuka Octic Andemon (5b(C
Jt 1cOt )t) etc. can be used.

The electromagnetic wave blocking thin film formed as described above is formed in double layers with a distance equal to the thickness of the glass material, and since the tin oxide forming the thin film has electrical conductivity, N , shields magnetic waves.

Effects As explained above, in the tBi wave prevention mechanism of the gaming machine according to the present invention, a double thin film of highly electrically conductive and transparent tin oxide is deposited on the glass surface without the player knowing. , electromagnetic waves oscillated from outside the gaming machine can be efficiently shielded, and the machine's sensors or circuit boards will not malfunction.

[Brief explanation of drawings]

Figure 1 is a front view of a machine equipped with the electromagnetic wave prevention mechanism according to the present invention, Figure 2 is a cross-sectional view of a panel door attached to the front of a panel of the machine, and Figure 3 is an enlarged view of the glass equipped with a thin film. FIG. 1... Pachinko game machine 2... Panel 3... Prize opening 3a... Sensor 4... Nail
5...Panel door 6.7...Glass
8.9...Thin film 10...Circuit board
11...Display section 12...Silicon coating 1
3... Handle patent application Patent application

Claims (2)

[Claims] (1) In gaming machines such as pachinko, which have a sensor installed on the board to confirm winnings and a circuit board to control the operation of the device installed on the back of the board, both sides of the glass installed on the front of the panel of the machine are After immersing in a metal ion solution such as tin or spraying a metal ion solution such as tin on both sides of the glass, drying at 20 to 80 ° C.
Electromagnetic wave prevention mechanism for gaming machines made by firing at 0°C to form a thin film of tin oxide. (2) The electromagnetic wave prevention mechanism according to claim 1, wherein the glass surface is coated with silicone before being sprayed with a solution of metal ions such as tin or before being immersed in a solution of metal ions such as tin.