JP2006340912A - Board housing unit and game machine provided with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently radiate heat of a heat sink by a fan. <P>SOLUTION: A main control board 21 is housed in a board housing case 30. The board housing case 30 is provided with an upper case 31 and a lower case 32. On the almost center part of a main body part 31a, the exposure opening 31f of a size larger than the outer peripheral end of the upper surface of a heat radiation fin 35b is formed. On the main body part 31a, a pressing rib 33 is formed, and the pressing rib 33 is formed along the outer peripheral end of the exposure opening 31f. An insertion opening 34 is formed in such a size that the heat radiation fin 35b can be inserted and a base 35a can not be inserted. The heat sink 35 is provided with the base 35a, the heat radiation fin 35b and a projection part 35c. The base 35a is made to abut on the upper surface of a main CPU 21a. Two each of support parts 36 are formed at respective inclined parts 33a-33d so as to form a gap between the adjacent ones. A fan holding part 37 is joined to the support parts 36 and the fan 40 is attached to the fan holding part 37. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a board storage unit that is used by being installed in a game hall such as a pachinko parlor, and a gaming machine including the same.

  Pachinko machines and slot machines, which are game machines that are installed and used in game halls such as pachinko parlors, give a certain value to pachinko balls and medals, and various pachinko balls and medals earned by playing games Can be exchanged for a free gift. The pachinko machine is equipped with various control devices that operate based on the supply of pachinko balls on the back of the game board and the main body base on which the game board is mounted, and a control circuit device corresponding to control these drive devices. When a player plays a game, these are appropriately operated to make the game full of fun.

  A control circuit device disposed inside a recent pachinko machine includes a circuit board in which electronic circuit components such as a CPU (central processing unit) and a mask ROM (read only memory) are incorporated, and the CPU includes the mask. Generally, electronic control is performed by sequentially reading and executing control program data stored as data in the ROM.

  These electronic circuit components increase in calorific value as the processing capacity increases, and the heat may cause problems such as breakage and performance degradation. In order to solve this problem, it is common to attach a heat radiating member called a heat sink to a component having a large amount of heat using a screw or an adhesive.

Further, in order to solve the problem of heat dissipation of the circuit board accommodated in the accommodation case, Patent Document 1 discloses that the circuit board is mounted on a pedestal protruding from the accommodation case, and the heat is transferred to the case side through the gantry. The structure which is made to conduct is described.
JP 2002-331136 A

  However, in the configuration described in Patent Document 1, heat is radiated from the circuit board, but heat generated from the individual electronic circuit parts is radiated through the circuit board and the gantry, and an electronic circuit part having a large heat generation amount is radiated. In the case where it is provided on the circuit board, there is a problem that heat cannot be completely dissipated. As a countermeasure, it is conceivable that the heat sink is directly attached to the electronic circuit component, and further, the fan is attached to the housing case, and the air is sent from the fan to the heat sink to promote the heat dissipation by the heat sink. Since the heat sink is housed in the housing case and the heat radiated from the heat sink stays inside the housing case, there is a problem that the heat radiation efficiency by the heat sink is poor.

  The present invention provides a board storage unit that can efficiently dissipate heat from a heat sink by a fan, and a gaming machine including the board storage unit.

  In order to achieve the above object, a board storage unit of the present invention includes a circuit board in which an electronic circuit component is incorporated, a plate-like contact portion that faces and contacts the upper surface of the electronic circuit component, and the contact portion. A heat dissipating member having a heat dissipating portion standing in a range inside the outer peripheral edge of the upper surface, a lower case holding the circuit board with the upper surface of the electronic circuit component facing upward, and covering the lower case An upper case that covers the circuit board; and an outer periphery of the upper surface of the heat radiating portion at a position facing the contact portion of the upper surface of the upper case facing the contact portion upper surface. Formed in a size larger than the end, and is disposed at a position that exposes the heat dissipating part to the outside, a position above the upper surface of the heat dissipating part and facing the upper surface of the heat dissipating part, and Sends air to the heat dissipation member A blower member, a holding portion that is provided above the upper surface of the heat radiating portion, holds the blower member, a support portion that is provided on the upper case and supports the holding portion, and an upper inner surface of the upper case. And a cylindrical portion that is provided in a cylindrical shape along the outer peripheral end of the exposure opening and toward the contact portion, and that surrounds the side surface of the heat radiating portion. Examples of the electronic circuit component include a CPU, an IC, and an LSI. Moreover, a heat sink etc. are mentioned as said heat radiating member. Furthermore, examples of the heat radiating part include heat radiating fins and heat radiating pins.

  Moreover, it is preferable that the said support part is formed with the discharge opening which discharge | releases the heat thermally radiated from the said heat radiating member outside.

  Further, the cylindrical portion may be inclined inwardly from the upper side toward the lower side, and the tip opening in the standing direction may be formed so that the heat radiating portion can be inserted and the abutting portion cannot be inserted. preferable.

  Moreover, it is preferable to form a convex portion surrounding the side surface of the tip portion in the standing direction of the cylindrical portion at the outer peripheral end of the upper surface of the contact portion. Further, the circuit board is provided with an insertion hole, and the heat dissipation member is inserted into and engaged with the heat dissipation member through the insertion hole, and the heat dissipation member is attached to the electronic circuit component so as to be in close contact with the heat dissipation member. It is preferable to provide a hook for locking to the circuit board.

  Furthermore, the gaming machine of the present invention is characterized by including the above-described substrate storage unit. As the circuit board, a CPU, a ROM, and the like are mounted, and a lottery unit for performing a lottery at the time of a game and a main control board having a control unit for controlling the driving of the lottery unit, and a lottery result of the lottery unit A sub-control board that controls the driving of a driving device such as a speaker or a lamp can be given as a response. The main control board is preferable, and the electronic circuit component is a CPU that functions as the lottery section or the control section. It is preferable that

  According to the substrate storage unit of the present invention, the circuit board in which the electronic circuit component is incorporated, the plate-shaped contact portion that faces and contacts the upper surface of the electronic circuit component, and the inner side of the outer peripheral edge of the upper surface of the contact portion A heat dissipating member having a heat dissipating portion erected in the range, a lower case holding the circuit board with the upper surface of the electronic circuit component facing upward, an upper case covering the circuit board by covering the lower case, and an upper case It is formed in a size that is larger than the outer peripheral edge of the upper surface of the heat radiating part at a position facing the abutting part of the upper surface that faces the upper surface of the abutting part, and more than the upper surface of the heat radiating part. An air blower member that is disposed on the upper side and that faces the upper surface of the heat dissipating part and sends air to the heat dissipating member from the exposure opening, a holding part that is provided above the upper surface of the heat dissipating part and holds the air blowing member, A support provided on the case to support the holding part. On the upper inner surface of the upper case, along the outer peripheral edge of the exposure opening and in a cylindrical shape toward the abutting portion, and surrounding the side surface of the heat radiating portion. While maintaining a sealed state, the heat radiating part is exposed to the outside of the substrate storage case, and since the heat radiated from the heat radiating member by the air blowing from the air blowing member can be released to the outside of the substrate housing case, the air blowing member The cooling efficiency of the heat radiating member can be improved.

  Moreover, since the support part is formed with a discharge opening for discharging the heat radiated from the heat radiating member to the outside, the cooling efficiency of the heat radiating member can be further improved.

  Further, the cylindrical portion is inclined inwardly from the upper side to the lower side, and the tip opening in the standing direction is formed so that the heat radiating portion can be inserted and the contact portion cannot be inserted. Since the air containing the blown dust does not enter the inside of the substrate storage case, the circuit board is not contaminated. Thereby, the cleaning process can be omitted when the circuit board is reused.

  Moreover, since the convex part which encloses the side surface of the standing direction front-end | tip part of the said cylinder part was formed in the outer peripheral end of the upper surface of a contact part, those who perform goto (tampering) act | When the goto action is performed on the electronic circuit component by inserting the, the action can be troublesome and the damage caused by the goto action can be reduced.

  Further, the circuit board is provided with an insertion hole, the hook is inserted into and engaged with the heat radiating member through the insertion hole, and the heat radiating member is locked to the circuit board so that the abutting portion comes into contact with and closely contacts the electronic circuit component. Therefore, the heat radiating member can be attached to the circuit board so that the abutting portion abuts on and closes to the electronic circuit component simply by inserting the hook into the insertion hole and engaging.

  In addition, according to the gaming machine of the present invention, since the board storage unit is provided, malfunction of the gaming machine due to overheating of the electronic circuit components can be reduced.

  As shown in FIG. 1, a pachinko machine 2 which is an embodiment of a gaming machine has a game board 4 disposed inside a main body frame 3, and a front door 5 can be opened and closed on the front surface of the main body frame 3. It is attached. Below the front door 5, a supply tray 6 for supplying a hit ball and an operation handle 8 for adjusting the launch strength of the pachinko ball 7 are provided. In the approximate center of the game area 4a where the pachinko ball 7 of the game board 4 is launched, various symbols are displayed on the liquid crystal screen for a predetermined time during the game based on predetermined winning conditions such as allowing the pachinko ball 7 to win the starting winning opening 10. There is provided a variable symbol display device 9 for stopping display after the variable display. Around the symbol variable display device 9, a start winning port 10, a normal winning port 11, a passing winning port 12, an attacker 13, and an out port 14 are integrally assembled to the game board 4. In addition, a center accessory 15 is integrally assembled at substantially the center of the game board 4, and the symbol variable display device 9 can be visually recognized through an opening 15 a formed in the center accessory 15.

  A winning ball detection sensor 16 (see FIG. 7) that detects the pachinko ball 7 that has entered the winning ports 10 to 12 is provided in each of the winning ports 10 to 12. The player inserts the pachinko ball 7 into the supply tray 6 and guides the pachinko ball 7 to the ball launcher 17 (see FIG. 7) through a guide path provided in the supply tray 6 to perform a rotary operation. The pachinko ball 7 is launched toward the upper side of the game area 4a of the game board 4 by rotating the handle 8 by a predetermined amount to control the driving of the ball launcher 17. The hit pachinko ball 7 enters one of the winning ports 10 to 11, the attacker 13, or is collected from the out port 14 while flowing down from above the game area 4 a. A big prize opening (not shown) is provided in the back of the attacker 13 so as to be covered by a movable door, and a big prize ball detection sensor 19 for detecting the pachinko ball 7 entering the big prize opening is provided in the big prize opening. (See FIG. 7). The attacker 13 is attached so as to be rotatable between an open position for opening the big prize opening and a closed position for closing the big prize opening. Note that a plurality of structures such as nails and windmills provided in the game area 4a of the pachinko machine 2 are well-known and will not be described.

  FIG. 2 shows an appearance of the back side of the pachinko machine 2. The main body frame 3 of the pachinko machine 2 has a sub control board 22 and a ball in addition to a main control board (circuit board) 21 for performing main control for operating various devices such as the ball payout device 18 when playing a game. A launching device 17, a ball dispensing device 18 and the like are respectively assembled. These control board and apparatus are electrically connected via a cable or the like (not shown). In addition, a sound generator 26 such as a speaker (see FIG. 7) and lamps 27 (see FIG. 7) are provided at various positions on the main body frame 3 and the game board 4 inside the main body frame 3. For example, a sound with a production effect is generated from the generator 26, or a production effect is produced by lighting control of the lamp 27.

  The main control board 21 is stored in a board storage case 30, and the board storage case 30 is attached to the main body frame 3.

  As shown in FIG. 3, the substrate storage case 30 includes an upper case 31 and a lower case 32, and the lower case 32 is assembled to the main body frame 3. The upper case 31 and the lower case 32 are attached in a state in which the main control board 21 and the heat sink (heat radiating member) 35 (see FIG. 4) are housed, so that no one can contact the main control board 21. It protects. The upper case 31 and the lower case 32 are made of a transparent resin, and the inside of the substrate storage case 30 can be visually confirmed.

  The upper case 31 and the lower case 32 are attached to the main body frame 3 so that the upper case 31 is located on the front side in FIG. 3 and the lower case 32 is located on the rear side in FIG. 3, respectively. The upper case 31 and the lower case 32 are referred to based on the state of the substrate storage case 30 shown in FIGS. Moreover, you may make it attach to the main body frame 3 in the state of the board | substrate storage case 30 shown in FIG.

  As shown in FIGS. 4 and 5, the upper case 31 having a U-shape when viewed from the side includes a long plate-like main body 31 a and a shape obtained by bending the upper end of the main body 31 a in FIG. 4 at an angle of 90 °. 4 and the lower bent portion 31c formed in a shape in which the lower end portion of the main body portion 31a in FIG. 4 is bent at an angle of 90 °. At the right end of the main body 31a in FIG. 4, six mounting holes 31d for mounting the lower case 32 are formed at a predetermined pitch. The upper bent portion 31b and the lower bent portion 31c have engaging holes 31e for inserting the engaging protrusions 32f of the lower case 32 at three locations, the left end portion, the substantially central portion, and the right end portion in FIG. Is formed.

  A rectangular exposure opening 31f for exposing the heat dissipating fins 35b of the heat sink 35 to the outside is formed at a substantially central portion of the main body 31a. The exposure opening 31f is formed in a size larger than the outer peripheral end of the upper surface of the eight radiating fins 35b.

  On the upper inner surface in FIG. 5 (rear inner surface in FIG. 4) of the main body portion 31a, a cylindrical holding rib (tubular portion) 33 is formed for pressing the base 35a of the heat sink 35 in a direction in contact with the main CPU 21a. . The holding rib 33 is formed so as to be along the outer peripheral end of the exposure opening 31f and toward the base 35a. The pressing rib 33 is formed to face the left and right directions in FIG. 5A, and inclines inwardly toward the rear in FIG. 4 (downward in FIG. 5), and the right inclined portion 33b. The upper inclined portion 33c and the lower inclined portion 33d are formed so as to face each other in the vertical direction in FIG. 5 (A) and inwardly incline toward the rear in FIG. 4 (downward in FIG. 5). These inclined portions 33a to 33d are integrally formed continuously in a mortar shape. Each of the inclined portions 33a to 33d has an insertion opening (tip opening in the standing direction) 34 formed by the lower end of each of the inclined portions 33a to 33d so that the radiating fin 35b of the heat sink 35 can be inserted therethrough. The base 35a is formed so that it cannot be inserted. In addition, a linear portion 33e that rises in the vertical direction is integrally formed at the lower end of each inclined portion 33a to 33d. The straight portion 33e is inserted between a heat radiating fin 35b and a convex portion 35c, which will be described later.

  In each of the inclined portions 33a to 33d, two support portions 36 are formed so as to protrude from the upper outer surface of the main body portion 31a. These eight support portions 36 are for holding a fan holding portion 37 and are joined to the fan holding portion 37 having a rectangular frame shape. The support portion 36 and the fan holding portion 37 are formed integrally with the main body portion 31a.

  The support portions 36 are substantially L-shaped and are formed at substantially constant intervals, and a heat sink 35 described later can be visually recognized from the gap between the adjacent support portions 36. That is, the heat radiated from the heat sink 35 is discharged from the gap to the outside of the substrate storage case 30. In the present embodiment, the discharge opening for discharging the heat radiated from the heat sink 35 to the outside is formed by a gap between the adjacent support portions 36. The support portions 36 are respectively joined to the side surfaces of the fan holding portion 37.

  The fan holding portion 37 is formed in a rectangular frame shape in which a blower hole 37a is formed at the center of a rectangular base, and the center thereof is formed so as to be coaxial with the center of the exposure opening 31f. Has been. The fan holding portion 37 is supported by the support portion 36 so that the bottom surface of the base body is located above the upper surface of the heat radiation fin 35b. The air holes 37a are for applying the wind from the fan 40 to the heat sink 35. The fan holding portion 37 is formed with a frame-shaped concave portion 37b protruding from the upper surface of the base on the outer peripheral side of the blower hole 37a, and an attachment boss 37c for attaching the fan 40 is formed on the upper surface of the concave portion 37b. Two are formed at diagonal positions. A screw fastening hole 37d for fastening the rectangular fan 40 with a screw is formed in the mounting boss 37c.

  The lower case 32 is formed in a box-like body portion 32a having an upper opening, and is formed integrally with an opening edge portion on the right side of the body portion 32a in FIG. It is composed of Six attachment portions 32b are formed, and an attachment hole 32c is formed in each. The upper outer surface 32d and the lower outer surface 32e in FIG. 4 of the main body portion 32a are convex engagements for insertion into the left end portion, the substantially central portion, and the right end portion corresponding to the engagement holes 31e of the upper case 31. Couplings 32f are respectively formed. As shown in the enlarged view of FIG. 4, the engagement protrusion 32f is formed in a triangular prism shape whose thickness decreases from the back side to the front side. Two mounting bosses 32g for mounting the main control board 21 are formed on the bottom inner surface of the main body 32a. A screw fastening hole 32h for fastening the main control board 21 with a screw is formed in the mounting boss 32g.

  A main CPU (electronic circuit component) 21 a is incorporated in the main control board 21. The main CPU 21a performs a large amount of electrical processing and generates heat. The heat sink (heat radiating member) 35 radiates heat generated by the main CPU 21 a and is stored in the substrate storage case 30. The heat sink 35 is formed at the outer peripheral edge of the upper surface of the base 35a, a flat base (abutting portion) 35a, eight heat dissipating fins (heat dissipating portions) 35b formed so as to protrude from one surface of the base 35a. And a convex portion 35c. The convex portion 35 c is formed with a length that surrounds the side surface of the linear portion 33 e of the pressing rib 33. And the linear part 33e will be in the fitting state clamped by the side surface and the convex part 35c of the radiation fin 35b substantially without gap. In the present embodiment, the radiating fins 35b are formed in a plate shape, but the shape of the radiating fins 35b is appropriately changed.

  On the left side and the right side of the base 35a of the heat sink 35, an elastically deformable thin metal mounting plate (hook) 38 is attached. The mounting plate 38 is for mounting the heat sink 35 in a state of being in contact with the main control board 21 so that the thickness increases from the lower tip in FIG. 5 (B) upward. A hook portion 38a having a substantially triangular shape protruding at the lower end of the mounting plate 38 is formed.

  The main control board 21 is formed with an insertion hole 21e for inserting the attachment plate 38 and an attachment hole 21f for attaching the main control board 21 to the lower case 32. When the hook portion 38a of the attachment plate 38 is inserted into the insertion hole 21e, the attachment plate 38 is deformed inward, and when the hook portion 38a is completely inserted through the insertion hole 21e, the original shape is restored. As a result, the hook portion 38 a is locked to the main control board 21, and the heat sink 35 is attached to the main control board 21. Further, when the screw 41 is screwed into the screw fastening hole 32h of the lower case 32 via the attachment hole 21f, the main control board 21 is attached to the lower case 32. The main control board 21 is attached to the lower case 32 with the upper surface of the main CPU 21a being the upper side in FIG.

  The fan 40 is for blowing air toward the heat sink 35, is connected to the sub CPU 22a of the sub control board 22 (see FIG. 7), and the drive is controlled by the sub CPU 22a. Two mounting holes 40 a are formed on the front surface of the fan 40 at diagonal positions corresponding to the mounting bosses 37 c of the fan holding portion 37. The mounting hole 40a is formed in a two-stepped shape. When the screw 42 is screwed into the screw tightening hole 37d formed in the mounting boss 37c of the fan holding portion 37 via the mounting hole 40a, the fan 40 is attached to the fan holding portion 37.

  As shown in FIGS. 5 and 6, an elastically deformable thin metal plate spring 43 is attached between the heat radiating fin 35 b and the convex portion 35 c on the upper surface of the base 35 a. The leaf spring 43 has a substantially square cross section. The plate spring 43 is configured such that when the upper case 31 is assembled to the lower case 32, the straight portion 33e of the holding rib 33 abuts on the upper portion 43a of the plate spring 43 and the upper portion 43a is deformed downward. The leaf spring 43 is elastically deformed. When the upper portion 43a is deformed downward, the upper portion 43a tends to be elastically deformed upward and the lower portion 43b is elastically deformed downward. When the upper case 31 is attached to the lower case 32, the holding rib 33 cannot be moved upward. As a result, an urging force is generated in a direction (downward in FIG. 6) in which the heat sink 35 comes into contact with the main CPU 21a and comes into close contact therewith. By this urging force, the heat sink 35 is brought into tight contact with the main CPU 21a.

  When the main control board 21 is attached to the bottom inner surface of the lower case 32 with screws or the like with the upper surface of the main CPU 21a facing upward, and the heat sink 35 is attached to the main control board 21 as described above, the main CPU 21a of the main control board 21 is attached. The bottom surface of the base 35a of the heat sink 35 is held in contact with the top surface of the heat sink 35. At this time, a coating material (for example, silicon grease) for increasing the thermal conductivity from the main CPU 21a to the heat sink 35 is applied to the upper surface of the main CPU 21a. When the upper case 31 is attached to the lower case 32 and fixed with screws 44, the heat sink 35 is urged downward by the leaf spring 43 in FIG. 6, which is the direction in which the base 35a contacts the main CPU 21a. As a result, the heat generated from the main CPU 21a is transmitted to the base 35a and released from the heat radiating fins 35b to the outside of the substrate storage case 30. In the present embodiment, the substrate storage unit includes a substrate storage case 30, a main control substrate 21, and a heat sink 35. The upper case 31 and the lower case 32 may be sealed and fixed with a one-way screw so as not to be removed.

  As shown in FIG. 7, the operation of the pachinko machine 2 is basically controlled by the main control board 21 and the sub control board 22. The main control board 21 and the sub control board 22 are provided with connection terminals, respectively, and the main control board 21 and the sub control board 22 are electrically connected by connecting the connection terminals with a connection cable or the like.

  The main control board 21 includes a main CPU (central processing unit) 21a, a main ROM (read only memory) 21b, and a main RAM (random access memory) 21c. The main CPU 21a reads a game control program stored in the main ROM 21b in response to an input signal input from the winning ball detection sensor 16 and generates a command for controlling the gaming state of the pachinko machine, and the sub control board 22 The command information is transmitted to and executed in a predetermined gaming state. In the main ROM 21b, a game control program is stored in a predetermined area, and a big hit lottery unit 21d is provided. The big hit lottery unit 21d stores a random number generation processing program, a random number table, and the like. . These game control program, random number generation processing program, and random number table are read out by the main CPU 21a and used appropriately so as to be processed. The main RAM 21c is a working area, and is used for temporary storage or rewriting of data used in the game.

  When the signal from the winning ball detection sensor 16 is input, the main CPU 21a drives the ball payout device 18 based on the game control program stored in the main ROM 21b to supply a predetermined number of winning balls on the supply tray 6. Pay out. Note that the number of prize balls may be set as appropriate according to the type of each prize-winning slot 10 or 11 containing game balls. The ball launcher 17 is connected to the operation handle 8, and the drive is controlled by the rotation operation of the operation handle 8.

  The sub control board 22 includes a sub CPU 22a, a sub ROM 22b, and a sub RAM 22c. The sub CPU 22a appropriately reads out the control program for the sub control device stored in the sub ROM 22b, and in accordance with the sub control control program determined according to the control signal input as command information from the main control board 21, the symbol variable display device 9 The drive control is performed. The sub RAM 22c is a working area, and is used for temporary storage or rewriting of data used in the control of the symbol variable display device 9.

  When the pachinko ball 7 entering the start winning opening 10 is detected by the winning ball detection sensor 16, a start signal is input to the main CPU 21a. The main CPU 21a operates the jackpot lottery unit 21d in response to the start signal.

  The jackpot lottery unit 21d includes a random number generator, a random number sampling circuit, and a jackpot determination table. When the winning ball detecting sensor 16 of the starting winning opening 10 detects a winning of the pachinko ball 7, a random number value is randomly selected. To do. The lottery random value is checked against the jackpot table, whether or not to shift to the jackpot mode is determined as a result of the lottery determination, and information (for example, command) related to the determination is generated.

  In the jackpot determination table, random numbers are grouped into three groups according to their sizes. Three random value groups are shifted to the “normal jackpot” mode for shifting to the loss or normal jackpot mode, or to the probability fluctuation jackpot (hereinafter referred to as “probable variation jackpot”) mode having a different jackpot probability from the normal mode (for example, the jackpot probability is high). A “probable big hit” is assigned, and a winning determination is made to determine whether to be lost or jackpot depending on which group the sampled random value belongs to. When the lottery is completed, a lottery result signal is fed back to the main CPU 21a. The main CPU 21a sends a lottery result signal to the sub CPU 22a.

  When the “normal jackpot” or “probable bonus jackpot” is drawn by the jackpot lottery unit 21d, the main CPU 21a rotates the attacker 13 to the open position, and the attacker 13 is released for 30 seconds, or the pachinko is placed in the big prize opening. Whether or not 10 balls 7 are won (10 pachinko balls 7 are detected by the big winning ball detection sensor 19) is one round, and a predetermined round (for example, 15 rounds) is continuously executed. Further, when “probable big jackpot” is drawn, until the next jackpot is drawn after the end of the jackpot state, a probability variation jackpot determination table having a higher jackpot probability than usual is used at the time of lottery.

  The sub ROM 22b of the sub control board 22 stores graphic data of each special symbol, a random symbol sampling circuit for stop symbols, and a stop symbol table. When the lottery result signal is input, the sub CPU 22a samples the random value based on the stop symbol random number sampling circuit stored in the sub ROM 22b, and compares the sampled random value with the stop symbol table. There are three types of stop symbol tables for lost, big hit, and probable big hit, and the random number sampled is collated with the stop symbol table corresponding to the lottery result in the big hit lottery section 21d. Each stop symbol table is assigned a special symbol combination for stopping on the winning active line to the grouped random value, and the group to which the sampled random value belongs The combination of special symbols to be stopped on the winning line is determined. Based on the determined combination of special symbols, the sub CPU 22a controls the variable display and stop display of the special symbols on the symbol variable display device 9. In the stop symbol table, for example, when two special symbols are stopped on the winning line, a special symbol is aligned, that is, a special symbol change mode when reaching a reach state, a symbol variable display It also includes data on whether or not to allow various variations of the special symbols, such as a special symbol variation mode in the reach notice and a special symbol stop mode in the jackpot notice.

  The operation of the pachinko machine 2 configured as described above will be described. The main CPU 21a of the main control board 21 performs a large amount of electrical processing as described above, and generates heat. The base 35a of the heat sink 35 is in contact with the main CPU 21a, and heat generated from the main CPU 21a is transmitted to the base 35a and is radiated from the radiation fins 35b to the outside of the substrate storage case 30. The sub CPU 22 a of the sub control board 22 drives the fan 40 and blows air from the fan 40 toward the heat sink 35. The heat sink 35 is cooled by the air blown from the fan 40. The upper case 31 is formed with an exposure opening 31f, a holding rib 33, a support portion 36, and a fan holding portion 37. The fan holding portion 37 is such that the bottom surface of the base body is located above the upper surface of the radiation fin 35b. It is supported by the support portion 36. Since the holding rib 33 is formed in a mortar shape, the area of the upper surface and the side surface of the radiating fin 35b that comes into contact with the air outside the substrate storage case 30 is increased. Further, since the support portions 36 are provided with a space between the adjacent support portions 36, the fan 40 cools (heatsinks) the heat sink 35 efficiently.

  As described above, the fan holding portion 37 is supported by the support portion 36 so that the bottom surface of the base body is located above the upper surface of the radiation fin 35b, and the support portions 36 are spaced apart from each other. Since the upper surface and the side surface of the radiating fin 35b are exposed to the outside of the substrate storage case 30 from the discharge opening formed by the gap between the adjacent support portions 36, the heat sink 35 is blown by the air from the fan 40. Since the heat radiated from the heat can be reliably released to the outside of the substrate storage case 30, the cooling (heat radiation) efficiency of the heat sink 35 by the fan 40 can be improved.

  Further, a pressing rib 33 is formed along the outer peripheral end of the exposure opening 31f of the upper case 31, a convex portion 35c is formed on the base 35a of the heat sink 35, and the linear portion 33e of the pressing rib 33 is connected to the heat radiation fin 35b and the convex portion. Since the leaf spring 43 that is inserted between the upper surface of the linear portion 33e and the upper surface of the base 35a is disposed so as to be in a sealed state, the air blown from the fan 40 is Since the air containing dust blown from the fan 40 does not enter the substrate storage case 30 and does not enter the substrate storage case 30, the main control substrate 21 is not contaminated. Thereby, the cleaning process can be omitted when the main control board 21 is reused.

  Further, since the straight portion 33e of the holding rib 33 is inserted between the heat radiating fin 35b and the convex portion 35c, a person who performs a got (injustice) action inserts a gore such as a wire from the exposure opening 31f. However, when the goto action is performed on the main CPU 21a, the action can be troublesome and the damage caused by the goto action can be reduced.

  In addition, the attachment plate 38 is attached to the left side surface and the right side surface of the base 35a of the heat sink 35, and the insertion hole 21e for inserting the hook portion 38a of the attachment plate 38 is formed in the main control board 21, so the hook portion 38a. The heat sink 35 can be easily attached while being in contact with the main control board 21 simply by inserting the through hole 21e.

  In the above-described embodiment, the embodiment in which one heat sink 35 is provided has been described. However, the number of the heat sinks 35 is not limited, and may be appropriately changed according to the number of electronic circuit components.

  Moreover, in the said embodiment, although the heat sink 35 was comprised from the shape which arranged the radiation fin 35b on the base 35a, as a shape of the heat sink 35, it is not limited to this, It contacts with an electronic circuit component. Any shape can be used as long as the shape can be changed, and a heat dissipation pin arranged on the base 35a can be appropriately changed.

  Further, in the above embodiment, the pachinko machine 2 has been described as an example, but the present invention can also be applied to various gaming machines such as a slot machine.

It is a perspective view which shows the external appearance of the pachinko machine which implemented this invention. It is a perspective view which shows the external appearance from the back side of a pachinko machine. It is a perspective view which shows a board | substrate storage case. It is a disassembled perspective view which shows a board | substrate storage case. It is a lower side surface sectional view showing a main control board, a substrate storage case, a heat sink, a fan, and a leaf spring. It is a lower side surface sectional view showing a main control board, a front cover, a rear cover, a heat sink, a fan, and a leaf spring. It is a functional block diagram which shows the electrical structure inside a pachinko machine.

Explanation of symbols

2 Pachinko machines (game machines)
21 Main control board (circuit board)
21a Main CPU (electronic circuit components)
21e Insertion hole 22 Sub control board 30 Substrate storage case 31 Upper case 31a Main body part 31f Exposure opening 32 Lower case 33 Holding rib (cylinder part)
33a Left inclined portion 33b Right inclined portion 33c Upper inclined portion 33d Lower inclined portion 33e Straight portion 34 Insertion opening (tip opening in standing direction)
35 Heatsink (heat dissipation member)
35a Base (contact part)
35b Fin (heat dissipation part)
35c Convex part 36 Support part 37 Fan holding part 37a Blower hole 38 Mounting plate (hook)
38a Hook 40 Fan (Blowing member)

Claims (6)

A circuit board in which an electronic circuit component is incorporated, a plate-like contact portion that faces and contacts the upper surface of the electronic circuit component, and heat dissipation that stands up in a range inside the outer peripheral edge of the upper surface of the contact portion A board housing unit comprising: a heat radiating member having a portion; a lower case that holds the circuit board with an upper surface of the electronic circuit component facing upward; and an upper case that covers the circuit board by covering the lower case There,
An exposure that is formed in a size larger than the outer peripheral end of the upper surface of the front heat radiating portion at a position facing the abutting portion on the upper surface of the upper case facing the upper surface of the abutting portion and exposes the heat radiating portion to the outside An opening,
A blower member that is disposed above the upper surface of the heat dissipating part and facing the upper surface of the heat dissipating part, and sends air to the heat dissipating member from the exposure opening,
A holding part that is provided above the upper surface of the heat dissipating part and holds the blowing member;
A support part provided on the upper case and supporting the holding part;
A cylindrical portion that is provided in a cylindrical shape on the upper inner surface of the upper case along the outer peripheral end of the exposure opening and toward the abutting portion, and that surrounds the side surface of the heat radiating portion. Board storage unit.   2. The substrate storage unit according to claim 1, wherein the support part is formed with a discharge opening for discharging heat radiated from the heat radiating member to the outside.   The cylindrical portion is inclined inwardly from the upper side to the lower side, and the tip opening in the standing direction is formed so that the heat radiating portion can be inserted and the abutting portion cannot be inserted. The substrate storage unit according to claim 1 or 2.   4. The substrate storage unit according to claim 1, wherein a convex portion that surrounds a side surface of the front end portion of the cylindrical portion in the standing direction is formed at an outer peripheral end of the upper surface of the contact portion. The circuit board is provided with an insertion hole,
A hook for engaging the heat radiating member with the circuit board is provided on the heat radiating member so that the heat radiating member is inserted into and engaged with the insertion hole, and the abutting portion comes into contact with and closely contacts the electronic circuit component. The substrate storage unit according to claim 1, wherein the substrate storage unit is a unit. A gaming machine comprising the board storage unit according to any one of claims 1 to 5.

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