JPH10151253A - Game machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively prevent getting a control baseboard converted and to make it possible to infallibly find such converting if any. SOLUTION: A print base board 11 on a main base board 5 is installed with a CPU 12, memories 13 such as ROM, RAM or others, a resistor 14 and such electric parts. The both upper and lower faces of a print base board 11 are all covered with a transparent epoxy resin coating layer 21 except at the connector part 15. This coating layer 21 is formed by spraying liquid made of epoxy resin solved by solvent and is so completely covering electric parts such as the CPU 12 and the outer face of the print base board 11 that those electric parts cannot be touched by hand.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a game machine such as a pachinko machine having a control board for controlling game contents using electronic components such as a central processing unit and a memory.

[0002]

2. Description of the Related Art Game contents of a game machine such as a pachinko machine include a central processing unit (CPU), a ROM and a RAM on a printed circuit board.
It is controlled by a control board configured by arranging electronic parts such as memories, etc., especially the open state of the big winning opening in pachinko machines etc. is regulated by law to reduce gambling, The game content is controlled according to regulations. However, there is a risk that the control board will be remodeled by replacing these electronic components or changing the circuit, and the content of the game will be changed to one with a high gambling property. Need to be provided. So, for example, Tokuho 5
JP-A-43820 discloses a method in which a sealing paper is attached to each desired electronic component and a case of a printed circuit board on which the electronic component is arranged, and a window is formed on the case so that the sealing state of each electronic component can be inspected. There is disclosed an invention in which an observation means such as the above is provided so that if the seal paper is broken and remodeled, it can be found.

[0003]

However, the sealing with the sealing paper can be performed without breaking the sealing paper by using a special chemical or forging, even if each electronic component is sealed. In the end, the modification of the control board is simplified, and this cannot be found even in the inspection, and the effect of preventing the modification of the control board is small.

Accordingly, an object of the present invention is to provide a gaming machine which can effectively prevent modification of a control board and can surely find a modification.

[0005]

According to a first aspect of the present invention, the printed circuit board is covered with a resin coating together with at least the desired electronic components. Things. According to a second aspect of the present invention, in order to further improve the effect of the first aspect, the resin coating is performed on both sides of the printed circuit board.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an explanatory view of a pachinko machine 1 as an example of a gaming machine as viewed from the back side. A mechanism board 3 hinged to a machine frame 2 to open and close is provided with a gaming board 4. On the back side, in addition to a main board 5 for controlling main game contents such as an open state of a special winning opening, a control board group 6 such as a symbol display and a decoration lamp are provided. Above it, a prize ball tank 7 for storing game balls to be paid out at the time of winning.
However, a prize ball payout device 8 is provided on each side. Reference numeral 9 denotes a prize ball payout board, and reference numeral 10 denotes a game ball launching device unit.

FIG. 2 is an explanatory view of the main substrate 5.
Are memories 13, 13 such as a CPU 12, a ROM, and a RAM.
.. A printed circuit board 11 on which electronic parts such as a resistor 14 are arranged and a connector part 15 of a connection terminal connected to another external board or a control part is mounted on a metal base 16.
, And a box-shaped cover 17 is placed from above to screw it to the base 16. The cover 17 is made of a transparent synthetic resin and has on its inner surface a metal reinforcement made up of two opposing side surfaces 19, 19 and a lattice-shaped upper surface 20 integral with the side surfaces 19, 19. A plate 18 is fitted. Reference numerals 17a, 17a,. As shown in FIG. 3A, transparent coating layers 21 and 21 made of epoxy resin are formed on almost the entire upper and lower surfaces of the printed circuit board 11 except for the connector portion 15. This coating layer 2
Reference numeral 1 denotes a liquid epoxy resin which is made into a liquid state by a solvent, sprayed on the surface, and then solidified. It is completely covered so that electronic components cannot be touched directly by hand.

Therefore, in the main substrate 5 having such a configuration, when replacing the IC such as the CPU 12 and the memory 13, for example, the coating layer 21 around the corresponding electronic component is removed as shown in FIG. Therefore, it takes a lot of time to replace parts and change circuits, which leads to prevention of unauthorized modification. In particular, since the coating layers 21 are formed on both sides of the printed circuit board 11, the removal of components becomes more troublesome, and the effect of preventing unauthorized alteration is further enhanced. In this way, when the tampering is performed in this manner, the inspection can be performed quickly because the coating layer 21 can be easily confirmed by being removed at the place of the replaced electronic component 13a. Furthermore, even if the remodeler performs resin coating again after the illegal remodeling, the original coating layer 21 and the new coating layer 22 are not naturally connected as shown in FIG. Is formed, so that the modification can be easily found in this case as well. By easily detecting such unauthorized alteration, the effect of preventing unauthorized alteration is further enhanced.

Note that this coating layer is not formed on the entire surface of the printed circuit board.
It is also possible to select a desired electronic component such as only an important IC such as M and to apply resin coating only to that portion. In this case, for example, it can be easily performed by masking a part other than the selected electronic component and spraying an epoxy resin or the like, and then removing the masking. Further, a coating layer can be formed only on one side of the electronic component side, not on both sides of the printed circuit board, or the thickness of the coating layer can be changed according to the type of the electronic component. Further, in the above embodiment, the resin coating is performed only on the main board that performs important control of the game content. However, other than the main board, such as the prize ball payout board 9 and any board in the board group 6 described above. A desired control board may be similarly coated with a resin. The type of the other resin and the method of forming the coating layer are not limited to the above-described embodiments, and examples of the type of the resin include vinyl chloride and vinyl acetate, and other resin-based adhesives. The method can be appropriately changed without departing from the spirit of the present invention, such as adopting a law.

[0010]

According to the first aspect of the present invention, since the printed circuit board is covered with at least a desired electronic component with a resin coating, it is difficult to replace the component or change the circuit, and to prevent unauthorized modification. It is effective for Further, even if the modification is performed, it can be immediately found in the state of the resin coating, so that the inspection becomes easy, which leads to prevention of unauthorized modification. According to the second aspect of the present invention, since the resin coating is performed on both sides of the printed circuit board, it becomes more difficult to replace parts and the like, and the effect of preventing the unauthorized alteration of the first aspect is enhanced.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a pachinko machine viewed from the back.

FIG. 2 is an explanatory diagram of a main substrate.

FIG. 3A is an explanatory view of a coating layer. (B) It is explanatory drawing of the coating layer at the time of replacing parts. (C) It is explanatory drawing of the coating layer at the time of recoating.

[Explanation of symbols]

1. Pachinko machine 2. Machine frame 5. Main board 11.
・ Printed circuit board, 12 ・ ・ CPU, 13 ・ ・ Memory, 1
4 ··· Resistance, 16 ·· base, 17 ·· cover, 18 ·
-Reinforcement plate, 21-Coating layer.

Claims (2)

[Claims] 1. A game machine comprising a control board for arranging electronic components on a printed board to control game contents, wherein the printed board is covered with at least a desired electronic component together with a resin coating. A gaming machine characterized by the following. 2. The gaming machine according to claim 1, wherein said resin coating is performed on both sides of said printed circuit board.