Game pins and game machines

Abstract

To create maintenance-free gaming machines. [Solution] The game nails 7 planted in the game machine are formed by including a core material 80 having a first Vickers hardness and a film material 81 having a second Vickers hardness greater than the first value, so that the overall Vickers hardness is between 150 Hv and 230 Hv. Such game nails 7 suppress plastic deformation because the film material 81 is hard. In addition, because the core material 80 is relatively soft, it is possible to absorb stress when a game ball collides with it.

Description

Technical Field

[0001] The present invention relates to game pins implanted on a game board surface of, for example, a pachinko machine and a gaming machine on which these game pins are implanted.

Background Art

[0002] In a pachinko machine, it is repeated that a game ball (pachinko ball) contacts or collides with game pins during a game. Therefore, as the game time elapses, the game pins may plastically deform, and the driving angle of the game pins into the game board surface may deviate from the set value. In this case, there arises a problem that the reproduction of the game content planned in the gaming machine is hindered. Therefore, maintenance for returning the plastic deformation and driving angle of the game pins to the initial state is essential. As an example of a technique for solving such a problem, there is proposed in Patent Document 1 a game pin formed of a steel material having a carbon content of 0.4 to 1.5% and having a stress at the elastic limit of 0.5 to 1.4 kN / mm 2 in a tensile test.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The game pin disclosed in Patent Document 1 is made of a steel material that does not plastically deform even when subjected to a stress less than the stress at the elastic limit. Therefore, the number of times of maintenance as described above can be reduced. However, with this composition of the game pin, it is not possible to suppress the occurrence of surface cracks due to wear, metal fatigue, etc. associated with repeated contact and collision of the game balls.

[0005] Furthermore, in recent years, various effects have been implemented to create a sense of anticipation and express the individuality of each gaming machine. However, traditionally, gaming pins have not been used for such effects.

[0006] The primary objective of this invention is to provide gaming nails and gaming machines that solve the above-mentioned problems. [Means for solving the problem]

[0007] The game pins of this disclosure are formed by comprising a core material having a first Vickers hardness and a film material having a second Vickers hardness greater than the first value, wherein the Vickers hardness is 150 Hv or more and 230 Hv or less. Furthermore, the film material is characterized by having compressive stress. [Effects of the Invention]

[0008] According to the above-described configuration of game pins, it is possible to create a game machine that prevents interference with the reproduction of planned game content and reduces the number of maintenance required. [Brief explanation of the drawing]

[0009] [Figure 1] A schematic front view showing an example of a gaming machine according to the first embodiment. [Figure 2] A schematic external view of the game pins in the first embodiment. [Figure 3] Diagram illustrating the structure of the game pins in the first embodiment. [Figure 4] A schematic view of a game pin that has undergone plastic deformation in a comparative example game machine. [Figure 5] Diagram illustrating the structure of the game pins in the fourth embodiment. [Figure 6] Diagram illustrating the structure of the game pins in the fifth embodiment. [Figure 7] Diagram illustrating the structure of the game pins in the sixth embodiment. [Figure 8] Diagram illustrating the structure of the game pins in the seventh embodiment. [Modes for carrying out the invention]

[0010] [First Embodiment] The following describes a first embodiment in which the present invention is applied to a pachinko game machine. Figure 1 is a schematic front view showing an example of a game machine 1 installed in a game hall in the first embodiment. The game machine 1 has a game board 2, a speaker 3, a game area 4 through which the launched game balls (game balls, hereinafter the same) can pass, a handle 5 for launching the game balls, and a tray 6 for temporarily storing the game balls.

[0011] The game area 4 is equipped with game nails 7, a windmill 8, a symbol display unit 9, a prize entry point 10, an attacker 11, and an out exit 12. The windmill 8 is a nail with a rotatable rotating ornament attached. Sometimes the game nails 7 are used as the nails for the windmill. Game balls that fall without entering any of the prize entry points 10 are sent to the back of the game board 2 through the out exit 12. The game machine 1 is also equipped with a transparent cover, a glass base (not shown), which covers the front of the machine to prevent game balls from flying out. The glass base is positioned approximately parallel to the game board 2 and spaced apart from the game board 2 at a distance equal to the diameter R of the game ball plus a play length d (R+d).

[0012] When a game ball launched into the game area 4 by the player's handle operation enters the prize slot 10, the symbol display unit 9 begins displaying symbols. The symbol display unit 9 is composed of, for example, an LED display, and when the game ball passes through the prize slot 10, the symbols change, and after a certain period of time, the symbols stop changing. Depending on the symbols at the time of stopping, the lottery result, such as a minor win, a major win, or a loss, is determined.

[0013] If the lottery result is a minor win, the attacker 11 is opened for a short time. When a game ball enters the open attacker 11, a predetermined number of game balls are dispensed into the receiving tray 6. If the lottery result is a big win, the attacker 11 remains open for a long time, and the player can obtain a large number of game balls (winning balls). Figure 1 shows the state in which the big win symbol (the number symbol "777") is stationary on the symbol display unit 9, indicating that a big win has been confirmed.

[0014] Thus, in order for the player to obtain a large number of game balls, the frequency of game balls entering the winning hole 10 is important. This frequency of ball entry is almost determined by the position of the game pins 7 implanted on the game board 2 and the angle when the game ball contacts or collides. Therefore, it is common for the position and angle of the game pins 7 implanted in the gaming machine 1 to be precisely adjusted before the start of the game.

[0015] In the first embodiment, the game pin 7 shown in FIG. 2 in its schematic appearance is used. The game pin 7 has a base end portion 70 embedded and fixed in the game board 2, a first body portion 71 extending from the other end of the base end portion 70 and having a length approximately equal to the radius (R / 2) of the game ball (diameter R = 11 mm), a second body portion 72 extending from the upper end of the first body portion 71 and having a length approximately equal to the above-described play length d, a third body portion 73 extending from the upper end of the second body portion 72, and a curved head portion 74 extending from the third body portion 73. Although a spiral groove may be engraved on the base end portion 70, the groove is omitted for convenience. The head portion 74 is called a "pin cap" and serves to change the subsequent trajectory of the game ball or adjust the space between adjacent game pins 7 when the game ball contacts or collides.

[0016] The first body portion 71, the second body portion 72, and the third body portion 73 have a cylindrical shape with a diameter r1 (= 1.7 to 2.0 mm), and the body length r3 in the length direction is about 23 mm. The head portion 74 with a diameter r2 (= about 3 mm) is formed in a cylindrical shape. The total length r4 obtained by adding the maximum thickness of the head portion 74 to the body length r3 is about 35 mm.

[0017] Since the game ball is spherical, it contacts the game pin 7 almost at a single point during the game. Also, since the table glass is provided at a distance (R + d) from the game board 2, the portion of the game pin 7 where the game ball frequently contacts and collides, that is, the portion where plastic deformation, wear, and surface cracks are likely to occur, is the second body portion 72.

[0018] Such plastic deformation could potentially be avoided by manufacturing the game nails 7 from an ultra-high hardness material. However, the regulations concerning the certification and type approval of gaming machines 1 stipulate that the game nails 7 must be made of brass with a Vickers hardness of 150 Hv or more and 230 Hv or less, or a material with equivalent hardness.

[0019] Therefore, in the first embodiment, as shown in Figure 3, a game nail 7 was made in which a core material 80 having a Vickers hardness of 150 Hv or less was covered with a film material 81 that had a higher Vickers hardness than the core material 80 and a compressive stress of a certain value or more.

[0020] The core material 80 may be, for example, a known brass (e.g., 73 brass or 64 brass) game nail for a game machine 1 with a diameter of about 1.9 mm, or a brass game nail with a higher copper content than known brass game nails, which has improved workability, elasticity, and durability. In addition, iron, which is not commonly used nowadays, can also be used as the core material 80 of the above size. The lower the Vickers hardness of the core material 80, the better it can absorb the impact force when a game ball collides with it, but it also becomes more susceptible to plastic deformation. Therefore, in the first embodiment, the impact force instantaneously generated in the core material 80 and the resulting plastic deformation are compensated for by the compressive stress of the membrane material 81. The "compressive stress" is a force generated inside the nail to resist the compressive force caused by the collision of the game ball, thereby preventing the accumulation of plastic deformation.

[0021] The film material 81 may be a nickel-plated film having a Vickers hardness of approximately 200 Hv to approximately 300 Hv. The nickel-plated film can be formed, for example, by electroplating the core material 80 with nickel using a Watt bath containing nickel sulfate, nickel chloride, boric acid, and phosphorus.

[0022] One example of a watt bath is 5A (amperes) / dm (decimeter). 2The test was performed at the specified current density, with a composition of 240 g / L of NiSO4·6H2O, 45 g / L of NiCl2·6H2O, and 30 g / L of H3BO3, without any other additives. Under these conditions in the Watt bath, for example, by setting the phosphorus content to 9 wt% and the nickel plating film thickness to approximately 20 μm (average value), it was possible to manufacture a game nail 7 with an overall Vickers hardness of approximately 180 Hv (average value).

[0023] <Durability Test> The same game was played continuously for 240 hours on a gaming machine 1 equipped with the game pins 7 of the first embodiment planted on the game board 2, and on a comparative gaming machine (which differed from gaming machine 1 only in the material of the game pins). The behavior of the game balls on the game board 2 and the state of the game pins 7 were recorded in high resolution over time. The number of game pins and the planting depth were the same in gaming machine 1 and the comparative gaming machine. After durability testing, several nails that had the highest frequency of contact or collision with the game balls, such as the "center nail (life nail)," and several nails that had a low frequency of contact or collision were removed from both Gaming Machine 1 and the Comparative Gaming Machine, and compared visually and physically with unused nails. In addition, the contact and collision patterns of the game balls and the trajectories and trends of the bounce angles were statistically analyzed.

[0024] In the case of the first embodiment of the gaming machine 1, no plastic deformation or surface cracks of the game pins 7 could be observed at a visual level before and after the durability test. In contrast, in the comparative example gaming machine, plastic deformation W shown in Figure 4 was clearly observed in the second body portion 72 of some of the game pins (game pins that were frequently hit by game balls). As a result, the angle of the game ball that hit the deformed game pin and bounced back showed a statistically larger variation compared to the angle before deformation.

[0025] Thus, it was confirmed that the game nails 7 manufactured according to the first embodiment showed no plastic deformation, at least at a visual level, before and after the durability test, and that the bounce angle when the game balls collided with the game nails 7 showed little statistical variation. This confirmed that it is possible to manufacture a maintenance-free game machine 1 that does not require maintenance of the game nails 7 during the demand period of the game machine 1.

[0026] [Second Embodiment] A second embodiment of the present invention will now be described. The difference from the description of the first embodiment lies in the manufacturing conditions of the membrane material 81 that covers the core material 80. For convenience, parts that are repeated with the first embodiment will be omitted from the description, and only the differences will be described. Also for convenience, parts with the same names as in the first embodiment will be described using the same reference numerals as in the first embodiment.

[0027] In the second embodiment, the condition of the Watt bath for forming the film material 81 was modified by adding an additive. The additives used were 2 g / L of saccharin and 0.2 g / L of butinediol. The film material 81 of the game nails 7 produced under these conditions was approximately 10 kg / mm², which is larger than the film material 81 produced in the first embodiment. 2 The compressive stress of ] was shown.

[0028] The game ball has a diameter of 11 mm and a mass of approximately 5.4 to 5.7 g. While the instantaneous impact force upon collision with the game nail 7 is absorbed by the elastic force of the core material 80, the core material 80 is metal, so plastic deformation due to prolonged collisions inevitably accumulates. Furthermore, as plastic deformation progresses, the contact area with the game ball also increases. However, approximately 10 kg / mm 2 The compressive stress in [ ] sufficiently suppresses instantaneous plastic deformation. Furthermore, even if minute scratches or cracks occur on the surface of the film material 81, these scratches and cracks are instantly closed, suppressing their spread. As a result, the accumulation of plastic deformation is suppressed, and while maintaining a Vickers hardness of approximately 180 Hv, it is possible to autonomously repair deformations such as scratches caused by compressive stress.

[0029] Furthermore, as the compressive stress of the membrane material 81 increases, tensile stress acts near the joint surface with the core material 80 as the membrane material 81 recovers from compression. Tensile stress is the resistance force that tries to return to its original state when a pulling force is applied to the surface. It is expected that this tensile stress, in synergy with the compressive stress of the membrane material 81, will accelerate the repair of scratches and cracks that occur on the surface of the membrane material 81.

[0030] Thus, according to the second embodiment, approximately 10 [kg / mm 2 Since a film material 81 having a compressive stress of ] can be formed on the core material 80, plastic deformation and the occurrence of surface cracks can be more effectively suppressed.

[0031] [Third Embodiment] A third embodiment of the present invention will now be described. The difference from the descriptions of the first and second embodiments lies in the manufacturing conditions of the membrane material 81 that covers the core material 80. For convenience, the description of parts that overlap with those embodiments will be omitted, and only the differences will be described. Also for convenience, parts with the same names as those in these embodiments will be denoted by the same reference numerals.

[0032] In the third embodiment, the difference from the first and second embodiments is that a sulfamic acid bath, which is a nickel sulfamate-based plating solution, is used instead of a Watt bath when forming the film material 81. The sulfamic acid bath has a concentration of 5 [A / dm 2 The test was conducted at the following current density, with a composition of 240 g / L of NiCl2·6H2O, 80 g / L of Ni(NH2SO3)2·4H2O, and 30 g / L of H3BO3. No additives were used. The membrane material 81 formed in this way has a density of approximately 20 kg / mm 2 It exhibited a certain degree of tensile stress. This high tensile stress can suppress plastic deformation caused by collisions with game balls, etc.

[0033] [Fourth Embodiment] In the fourth embodiment, a game nail 7 was manufactured with a modified core material 80 shape, as described in the first to third embodiments. The material and size of the core material 80 and the manufacturing method of the membrane material 81 are the same as those described in the first embodiment. For convenience, the description of parts that overlap with the first embodiment is omitted, and only the differences are described. Also for convenience, parts with the same names as in the first embodiment are denoted by the same reference numerals.

[0034] Figure 5 is an explanatory diagram of the structure of the game pins in the fourth embodiment. The core material 80 of the game pins 7 has multiple grooves T formed therein, each with curvature decreasing towards the central axis C, and becoming flat (curvature 0) at the bottom closest to the central axis C. If the axis perpendicular or approximately perpendicular to the direction of the central axis C (axial direction) is defined as the vertical axis V, then the opposing bottoms L1, L2 and opposing tops H1, H2 with respect to the central axis C are both located on the vertical axis V. When a film material 81 is formed on this core material 80 using the method described in the first to third embodiments, the outer surface of the film material 81 also has almost the same shape as the core material 80.

[0035] In this type of game nail 7, the part that comes into contact with the game ball is only the top (H1, H2), and the contact area is smaller than that of the game nail 7 in the first to third embodiments, thus suppressing deformation. Also, because adjacent grooves T are separated at the top, even if compressive stress is applied by the game ball to any point in one groove T, for example, tensile stress is applied to the opposite side of that groove T, and the deformation forces cancel each other out. Furthermore, even if compressive or tensile stress is applied to the film material 81 of one groove T, the effect on other grooves T is small. Therefore, the game nail 7 of the fourth embodiment is more deformed than the game nail 7 of the first to fourth embodiments. In the example of Figure 5, multiple grooves T are formed at approximately equal intervals, but the grooves T may be formed at unequal intervals, and there may be one or more of them.

[0036] [Fifth Embodiment] In the fifth embodiment, a game nail 7 was manufactured with a modified core material 80, as described in the fourth embodiment. The material and size of the core material 80 and the manufacturing method of the membrane material 81 are the same as those described in the first embodiment. For convenience, the description of parts that overlap with the first embodiment is omitted, and only the differences are described. Also for convenience, parts with the same names as in the fourth embodiment are denoted by the same reference numerals.

[0037] Figure 6 is a cross-sectional view of the structure of the game pin in the fifth embodiment. The core material 80 of the game pin 7 has a spiral groove S formed therein, in which the curvature decreases as it approaches the central axis C, and becomes flat (curvature 0) at the bottom closest to the central axis C. This differs from the fourth embodiment in that the top H2 is opposite the bottom L1 with respect to the central axis C, and the top H1 is opposite the bottom L2.

[0038] In this type of game nail 7, the spiral tops (H1, H2) are the points of contact or collision with the game ball, thus distributing the compressive force and suppressing deformation. Furthermore, since the groove S can be formed with a single polishing process, it is also advantageous in terms of manufacturing costs.

[0039] [Sixth Embodiment] In the sixth embodiment, a game nail 7 was manufactured with a modified shape of a part of the core material 80 described in the first embodiment. As explained in the first embodiment, the second body portion 72 is the part of the core material 80 that is frequently contacted or struck by game balls, and therefore prone to plastic deformation, wear, and surface cracking. Therefore, in the sixth embodiment, as shown in the structural diagram of Figure 7, the second body portion 72 was made thicker than the other body portions 71 and 73.

[0040] In the example shown in Figure 7, the portion of the core material 80 corresponding to the second body portion 72 is slightly expanded into a convex shape. This expanded portion is referred to as the expanded portion B. When forming the film material 81, electricity tends to concentrate in the expanded portion B, especially during the plating bath. In the sixth embodiment, the portion corresponding to the second body portion 72 is made slightly convex to promote excessive deposition of plating, thereby increasing the thickness of the second body portion 72.

[0041] The game nails 7 manufactured in this manner have a structure that is less prone to plastic deformation and bending, thus more effectively preventing plastic deformation and the like. Furthermore, in the case of a core material 80 having an expansion portion B as illustrated in Figure 7, which thereby ensures sufficient Vickers hardness, it is also possible to have a game nail 7 without a membrane material 81.

[0042] [Seventh Embodiment] A seventh embodiment of the present invention will now be described. In the seventh embodiment, a game nail 7 that solves the problem that, conventionally, game nails 7 have not been used for creating a sense of anticipation or expressing the individuality of the game machine model will be described. For convenience, parts that are repeated with the first embodiment will be omitted from the description, and only the different parts will be described. Also for convenience, parts with the same names as in the first embodiment will be denoted by the same reference numerals.

[0043] Figure 8 is an explanatory diagram of the structure of the game pins in the seventh embodiment. In this embodiment, the game pins 7 have the head portion 74 of the film material 81 replaced with a fluorescent paint layer E. The fluorescent paint layer E is a layer made by mixing multiple types of phosphors, each of which emits light in a unique color when exposed to non-visible light.

[0044] Phosphors do not emit light in the presence of visible light, but they emit bright light when exposed to invisible light such as ultraviolet light (black light, etc.). This is because the phosphor efficiently absorbs the energy of ultraviolet light and converts it into visible light. By installing a game nail 7 having such a fluorescent coating layer E in a specific area of ​​the game area 4 in Figure 1, for example near the symbol display area 9, and irradiating the head 74 of the game nail 7 with ultraviolet light from an ultraviolet light-emitting part of a game machine 1 (not shown) from outside the visible area at a predetermined timing such as when a prize is won, for example, at either a small win or a big win, or both, the fluorescent coating layer E can emit light, creating a visual effect.

[0045] The head 74 of the game nail 7 is too small to accommodate a light-emitting element such as a light-emitting diode, and normally it does not emit light spontaneously, although it may reflect light. Therefore, if the game nail 7 of the eighth embodiment spontaneously emits light at a predetermined timing, the unexpectedness of this can attract the player's interest. In particular, by irradiating it with light outside the visible range, the player will perceive that the game nail 7 itself is spontaneously emitting light, thereby further enhancing the player's interest. As light outside the visible range, for example, ultraviolet light may be irradiated. Many fluorescent paints do not emit light with visible light, but emit bright light when exposed to ultraviolet light (such as a black light). This is because the phosphors contained in the paint efficiently absorb the energy of ultraviolet light and convert it into visible light. The seventh embodiment utilizes the game nail 7 for the purpose of creating a sense of anticipation and expressing the individuality of the game machine model. Therefore, as a modification thereof, any type of game nail may be used instead of the game nail 7, and a fluorescent paint layer E may be provided on the head portion thereof. As a result, even in any type of game nail where the film material 81 is not formed, the addition of the fluorescent paint layer E makes it possible to create a sense of anticipation and express the individuality of the game machine model.

[0046] As described above, one embodiment disclosed herein is a game nail 7 formed by including a core material 80 having a Vickers hardness of a first value (for example, 100 Hv or more and less than 150 Hv) and a film material 81 having a Vickers hardness of a second value greater than the first value (for example, about 200 Hv to about 300 Hv), characterized in that the Vickers hardness is 150 Hv or more and 230 Hv or less. A game nail 7 of this embodiment allows the use of materials with higher hardness that could not be used conventionally due to Vickers hardness standards. By using a film material 81 with high Vickers hardness, durability is improved, and the core material 80 is relatively soft, which allows it to absorb the impact received from the game ball.

[0047] The core material 80 can be a metal material with a Vickers hardness of 100 Hv or more and less than 150 Hv (for example, iron, 64 brass, or 73 brass). The film material 81 can be a metal material with a Vickers hardness of 200 Hv or more and less than 300 Hv (for example, nickel plating or nickel-chromium plating).

[0048] It is preferable that the membrane material 81 be made of a metal material that has compressive stress. This is because cracks that occur when a game ball comes into contact with or collides with the membrane material are suppressed by the compressive stress. It is also preferable that the core material 80 has tensile stress. This is because tensile stress is applied to the core material side of the membrane material 81, and as a result, compressive stress is applied to the surface of the membrane material 81, thereby suppressing cracks.

[0049] A groove (groove T, S) may be formed on a part of the surface of the body of the core material 80. Compared to a simple rod shape, this can suppress cracking by dispersing and receiving the impact when a game ball collides with it. Alternatively, a protrusion may be formed on a part of the surface of the body of the core material 80. This can relatively increase the strength of that part.

[0050] The game nail 7 may have a light-emitting part on its head 74 that absorbs light rays outside the visible range and emits light rays within the visible range. Since the game nail 7 itself appears to emit light, the enjoyment of the game can be enhanced.

[0051] By installing the aforementioned game nails 7 in a gaming machine, a maintenance-free gaming machine can be realized. In this embodiment, an example of an embodiment applied to a pachinko game machine has been described, but it can be similarly applied to other game machines that use game balls and game nails, such as smartball. [Explanation of Symbols]

[0052] 1... Gaming machine, 2... Game board, 4... Game area, 7... Game nails, 8... Windmill, 70... Base end, 71... First body, 72... Second body, 73... Third copper part, 74... Head, 80... Core material, 81... Membrane part.

Claims

1. It is formed by comprising a core material having a first Vickers hardness value and a film material having a second Vickers hardness value greater than the first value, and the Vickers hardness is 150 Hv or more and 230 Hv or less. The aforementioned membrane material is characterized by having compressive stress, and is a game nail.

2. A core material having a first Vickers hardness and a film material having a second Vickers hardness greater than the first value, wherein the Vickers hardness is 150 Hv or more and 230 Hv or less. The aforementioned core material is characterized by having tensile stress, and is a game nail.

3. A core material having a first Vickers hardness and a film material having a second Vickers hardness greater than the first value, wherein the Vickers hardness is 150 Hv or more and 230 Hv or less. A game nail characterized in that grooves are formed on the surface of the body portion of the core material.

4. A game nail comprising a core material having a first Vickers hardness and a film material having a second Vickers hardness greater than the first value, wherein the Vickers hardness is 150 Hv or more and 230 Hv or less, A game nail characterized in that a plurality of grooves are formed on the surface of the core material, substantially perpendicular to the central axis of the game nail.

5. A core material having a first Vickers hardness and a film material having a second Vickers hardness greater than the first value, wherein the Vickers hardness is 150 Hv or more and 230 Hv or less. A game nail characterized in that a spiral groove is formed on the surface of the core material.

6. A game nail comprising a core material having a first Vickers hardness and a film material having a second Vickers hardness greater than the first value, wherein the Vickers hardness is 150 Hv or more and 230 Hv or less, The aforementioned game nail has a base end which is embedded in the game machine, a first body extending from the base end, a second body extending from the first body, a third body extending from the second body, and a head provided at the end of the third body facing the second body. A game nail characterized in that, in a direction substantially perpendicular to the axial direction of the game nail, the thickness of the membrane material in the second body is greater than the thickness of the membrane material in the third body.

7. The core material used is a metal material with a Vickers hardness of 110 Hv or more and less than 150 Hv. The game nails according to any one of claims 1 to 6.

8. The aforementioned film material is a metal material having a Vickers hardness of 200 Hv or more and less than 300 Hv. The game nails according to any one of claims 1 to 6.

9. The head is characterized by having a light-emitting part that absorbs light rays outside the visible region and emits light rays in the visible region. The game nails according to claim 6.

10. A game featuring a game nail as described in any one of claims 1 to 6, Gaming machine.

11. A gaming machine equipped with a game pin as described in any one of claims 1 to 5, which emits a light ray outside the visible range when a prize is won, The head of the aforementioned game pin is characterized by having a light-emitting part that absorbs light rays outside the visible region and emits light rays in the visible region. Gaming machine.

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