JPH0742468Y2 - Pachinko machine for play - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a pachinko machine for play, and more particularly to a pachinko machine that shields electromagnetic waves coming from outside.

[Conventional technology]

On the front of the pachinko machine for playing, a glass plate is installed so as to form a space in which the shot balls fall from the top to the bottom, so that the movement of the shot balls can be watched through this glass plate. Has become. When a ball enters the winning opening, a tulip that can be opened and closed is provided near the winning opening and continues to serve as a guide plate for the ball so that the ball can easily enter the winning opening. Here, a drive mechanism for opening and closing the tulip is incorporated in the pachinko machine by detecting that a ball has entered the winning opening by passing the ball through a coil-shaped current detection type sensor.

[Problems to be solved by the invention] However, radio waves emitted from a recently modified portable transceiver cause an abnormal electrical signal to be generated in a current detection type sensor at the winning opening, or an ignition device such as a gas rice cooker is modified. Then, when the switch is turned on, an abnormal electric signal is generated by the electromagnetic wave emitted along with the generation of sparks, and the tulip is left open. An object of the present invention is to provide a pachinko machine in which the tulip at the winning opening does not malfunction due to the radio waves coming from the outside as described above.

[Means for Solving the Problems]

The present invention has a glass plate window on the front surface, and detects that a ball has entered the winning opening with a current detection type sensor,
A pachinko machine having a drive mechanism for operating a tulip provided in the vicinity of a winning opening, wherein at least one surface of the glass plate is coated with a transparent conductive film of tin oxide or indium oxide, whereby radio waves are generated. Is a pachinko machine that prevents the sensor from operating through the window.

The shielding ability of the glass plate coated with the transparent conductive film according to the present invention against electric waves is related to the conductivity of the transparent conductive film, that is, the sheet resistance, and the stronger the electric wave, the lower the sheet resistance conductive film is to shield. Will be needed. In the present invention,
The sheet resistance of the transparent conductive film is required to be 300Ω / mouth or less in order to prevent the above-mentioned fraudulent activity, and is preferably 150Ω / mouth or less in order to completely shield strong radio waves.

[Action]

The transparent conductive film coated on the surface of the glass plate on the front surface of the pachinko machine according to the present invention reflects radio waves generated outside the pachinko machine on the film surface and prevents an abnormal signal from entering the sensor.

〔Example〕

The present invention will be described below based on embodiments. FIG. 1 is a schematic cross-sectional view for explaining an embodiment of a pachinko machine of the present invention, where 1 is a pachinko machine and 2 is a glass plate provided on the front surface of the pachinko machine 1 and separated by about 10 mm. 2
One is provided. 3 is a transparent conductive film coated on the surface of the glass plate 2, 4 is a winning opening, 5 is a tulip attached to the top of the winning opening 4, 6 is a sensor, 7 is a driving mechanism, and 8 is a glass plate insertion frame. is there. Figure 2 (a),
(B) is a partial sectional view of another embodiment of the pachinko machine provided with the glass plate coated with the transparent conductive film according to the present invention.

Example 1 As shown in FIG. 2 (a), an inner glass plate having a thickness of 3.2 mm was coated with a fluorine-doped tin oxide film, and a pachinko machine was used as shown in FIG. 2 (b). A pachinko machine was manufactured by coating a 3.2 mm thick glass plate with a fluorine-doped tin oxide film.

About the film with various sheet resistances, we installed a Citizen Band transceiver at a position 10 cm away from the outer glass plate, emitted a radio wave of about 430 MHz from the transceiver to the pachinko machine, and installed it above the winning opening. I checked if the tulip given malfunctioned. First result
Shown in the table.

Example 2 As shown in FIG. 2 (a), an inner glass plate having a thickness of 3.2 mm was coated with a film of indium oxide doped with tin, and two pachinko machines as shown in FIG. 2 (b) were used. 3.2 mm thick
A pachinko machine was manufactured by coating a glass plate with a tin-doped indium oxide film.

About the film with various sheet resistances, we installed a Citizen Band transceiver at a position 10 cm away from the outer glass plate, emitted a radio wave of about 430 MHz from the transceiver to the pachinko machine, and installed it above the winning opening. I checked if the tulip given malfunctioned. Second result
Shown in the table.

Comparative Example With the same pachinko machine as in Example 1, the inner glass plate was a glass plate having a thickness of 3.2 mm and not covered with the transparent conductive film. We installed a citizen band transceiver 10 cm away from the outside glass plate, and emitted a 430 MHz radio wave from the transceiver toward the pachinko machine to check if the tulip attached to the top of the winning opening malfunctions. The results are shown in Table 3.

[Result of the Invention] In the pachinko machine of the present invention, incoming radio waves are shielded by the glass plate on the front surface, so that no damage is caused by a fraudulent act using the radio waves.

[Brief description of drawings]

FIG. 1 is a schematic sectional view for explaining an embodiment of a pachinko machine of the present invention, and FIG. 2 is a partial sectional view of another embodiment of the pachinko machine of the present invention. 1 ... Pachinko stand, 2 ... Glass plate, 3 ... Transparent conductive film, 4 ... Winning hole, 5 ... Tulip, 6 ... Sensor, 7 ... Driving mechanism, 8 ... Glass plate insert frame

Claims (2)

[Scope of utility model registration request] 1. A pachinko machine having a glass plate window on the front surface and a drive mechanism for operating a tulip in the vicinity of the winning opening by detecting that a ball has entered the winning opening by a current detection type sensor, A pachinko machine characterized in that at least one surface of the glass plate is coated with a transparent conductive film containing tin oxide or indium oxide as a main component to prevent radio waves from passing through the window to operate the sensor. Stand. 2. The pachinko machine according to claim 1, wherein the sheet resistance of the transparent conductive film is 300 Ω / port or less.