JP4938373B2

JP4938373B2 - Display device for gaming machine

Info

Publication number: JP4938373B2
Application number: JP2006195973A
Authority: JP
Inventors: 義一足立; 行彦後藤; 雅勝鈴木; 和政岡本
Original assignee: 日本ぱちんこ部品株式会社
Priority date: 2006-07-18
Filing date: 2006-07-18
Publication date: 2012-05-23
Anticipated expiration: 2026-07-18
Also published as: JP2008026402A

Description

本発明は、遊技機用表示装置に関する。 The present invention relates to a display device for a gaming machine.

従来から、パチンコ機、アレパチ機等の弾球遊技機やスロットマシン、パチスロ機等の回胴式遊技機を含む種々の遊技機では、遊技機内での抽選結果に基づき大当たり（特別遊技状態）、取得された役の種別等が成立する可能性を途中報知（予告表示）したり、その抽選結果に対応する表示を最終報知（確定表示）したりするために多種多様な表示装置が用いられている。このような表示装置の一種である発光素子による表示装置において、本願出願人は、図柄を表示するメイン表示部（例えば７セグメント方式）と導光板を用いた面発光部とを組み合わせた新規な表示装置を提案した（特許文献１参照）。その一例を図１２及び図１３に示す。 Conventionally, in various gaming machines including ball and ball game machines such as pachinko machines and alepatchi machines, and revolving type game machines such as slot machines and pachislot machines, jackpots (special gaming state) based on lottery results in the gaming machines, A variety of display devices are used to notify the possibility that the type of the acquired combination is established (preliminary display) or to perform final notification (final display) corresponding to the lottery result. Yes. In a display device using a light emitting element which is a kind of such a display device, the applicant of the present application combines a main display unit (for example, a 7-segment system) that displays a pattern with a surface light emitting unit using a light guide plate. An apparatus was proposed (see Patent Document 1). An example thereof is shown in FIGS.

図１２及び図１３に示すメイン表示部１１０は、数字・文字等からなる図柄を表示して遊技者に報知するための図柄発光素子群１１１と、各図柄発光素子を中空状に取り囲んで図柄を形成するようにフレーム構成されたリフレクタ１１２とを有する。また、面発光部１２０は透光性の導光板１２２と導光板用発光素子１２１とを有する。導光板１２２は、メイン表示部１１０の図柄発光素子群１１１とリフレクタ１１２とを表示面側となる遊技者側から面状に覆う本体部１２２ａ、及びその本体部１２２ａから湾曲部１２２ｃを経て図柄発光素子群１１１とリフレクタ１１２とを囲うように延出する延長部１２２ｂを含む。導光板用発光素子１２１は、導光板１２２を延長部１２２ｂの端面側から照射して面発光させるために、図柄発光素子群１１１の外側に配置されている。さらに、図柄発光素子群１１１と導光板用発光素子１２１とは単一の発光基板１０４（共通基板）に実装されている。 The main display unit 110 shown in FIG. 12 and FIG. 13 includes a symbol light emitting element group 111 for displaying symbols composed of numbers, letters, etc. and informing the player, and surrounding each symbol light emitting element in a hollow shape. And a reflector 112 framed to form. The surface light emitting unit 120 includes a light transmissive light guide plate 122 and a light guide plate light emitting element 121. The light guide plate 122 has a main body part 122a that covers the pattern light emitting element group 111 and the reflector 112 of the main display part 110 in a planar shape from the player side, which is the display surface side, and a light emitting pattern from the main body part 122a through the curved part 122c. An extension part 122b extending so as to surround the element group 111 and the reflector 112 is included. The light-emitting element 121 for the light guide plate is disposed outside the pattern light-emitting element group 111 in order to cause the light guide plate 122 to emit light from the end face side of the extension part 122b to emit light. Further, the design light emitting element group 111 and the light guide plate light emitting element 121 are mounted on a single light emitting substrate 104 (common substrate).

特許第３７２０８３５号公報Japanese Patent No. 3720835

このように、図１２，図１３に示す表示装置によれば、図柄を表わすメイン発光と導光板１２２の面状の発光とで重層的に発光表示することができる。そして、導光板１２２の本体部１２２ａから湾曲部１２２ｃを経て延長部１２２ｂを形成し、メイン表示部１１０の図柄発光素子群１１１と面発光部１２０の導光板用発光素子１２１とを単一の発光基板１０４に実装することにより、コンパクトな構成を実現することができる。しかしながら、導光板１２２に湾曲部１２２ｃが形成されているために、光の伝搬性を抑制する場合がある。 As described above, according to the display device shown in FIGS. 12 and 13, it is possible to perform multi-layer light emission display with the main light emission representing the design and the planar light emission of the light guide plate 122. Then, an extended portion 122b is formed from the main body portion 122a of the light guide plate 122 through the curved portion 122c, and the pattern light emitting element group 111 of the main display portion 110 and the light emitting device 121 for the light guide plate of the surface light emitting portion 120 emit a single light. By mounting on the substrate 104, a compact configuration can be realized. However, since the curved portion 122c is formed on the light guide plate 122, the light propagation property may be suppressed.

具体的には、図１３に示すように、導光板用発光素子１２１から導光板１２２の延長部１２２ｂに入った光が湾曲部１２２ｃから本体部１２２ａへ進まずに延長部１２２ｂを逆行する事態も想定される。この場合、逆行した光が例えば延長部１２２ｂの導光板用発光素子１２１側の端面から外部へ漏洩したりすると、導光板用発光素子１２１の光量損失となる。このような光量損失（光量不足）を補うには、発光の際のデューティ比を大きくすればよいが、導光板用発光素子１２１自身やそれを駆動制御するＩＣ等の制御回路にかかる負荷が大きくなり、発熱等によって耐久性（寿命）が低下するおそれがある。 Specifically, as shown in FIG. 13, there is a situation in which the light that has entered the extension 122b of the light guide plate 122 from the light emitting element 121 for the light guide plate does not travel from the curved portion 122c to the main body 122a but travels back through the extension 122b. is assumed. In this case, for example, if the backward light leaks to the outside from the end face of the extension 122b on the light guide plate light emitting element 121 side, the light amount of the light guide plate light emitting element 121 is lost. To compensate for such light loss (light shortage), the duty ratio at the time of light emission may be increased. However, the load on the light guide plate light emitting element 121 itself and a control circuit such as an IC for controlling driving of the light guide plate is large. Therefore, durability (life) may be reduced due to heat generation or the like.

なお、導光板用発光素子１２１は図柄発光素子群１１１の外側に配置され、導光板１２２は図柄を表わすメイン発光を包み込むように面状発光する。一般に、発光素子は指向性が強く先鋭な指向特性を有するため、直進性はよいが光の広がり角θは小さくなる傾向がある。そこで、図柄を示す発光を包み込むような発光態様を実現するために、導光板用発光素子１２１の取付ピッチを小さくして個数を増やしたり、各素子１２１の発光の際のデューティ比を大きくしたりすると、結果的に上記と同様に負荷が大きくなり、耐久性（寿命）が低下するおそれもある。 The light-emitting element 121 for the light guide plate is disposed outside the symbol light-emitting element group 111, and the light guide plate 122 emits light in a planar manner so as to enclose the main light emission representing the symbol. In general, since a light emitting element has a strong directivity and sharp directivity characteristics, it has good straightness, but tends to have a small light spread angle θ. Therefore, in order to realize a light emission mode that encloses light emission indicating a pattern, the mounting pitch of the light emitting elements 121 for the light guide plate is decreased to increase the number, or the duty ratio at the time of light emission of each element 121 is increased. As a result, the load increases as described above, and the durability (life) may be reduced.

本発明の課題は、導光板用発光素子等の負荷を増大させたり耐久性（寿命）を低下させたりすることなく、導光板用発光素子から出た光の光量損失を軽減して、コンパクトな構成を実現しつつ多様性・ゲーム性に富んだ発光表示形態を可能とした遊技機用表示装置を提供することにある。 The object of the present invention is to reduce the amount of light emitted from the light-emitting element for the light guide plate without increasing the load on the light-emitting element for the light guide plate or reducing the durability (lifetime), and to achieve a compact size. An object of the present invention is to provide a display device for a gaming machine that realizes a light-emitting display mode that is rich in variety and gameplay while realizing a configuration.

Means for Solving the Problems and Effects of the Invention

上記の課題を解決するために、遊技機に取り付けられる本発明の遊技機用表示装置は、
数字・文字等からなる図柄を、セグメント毎に１又は複数設けられた個々の図柄発光素子により、表示領域にセグメント表示して遊技者に報知するための図柄発光素子群が所定の配列方向に所定の間隔を置いて複数配列されたメイン表示部としてのセグメント表示部と、
そのセグメント表示部の複数の図柄発光素子群を表示面側となる遊技者側から面状に覆う本体部、及びその本体部から湾曲部を経て前記配列方向に沿って前記複数の図柄発光素子群の両側を囲うように延出する延長部を含む透光性の導光板と、その導光板を前記延長部の端面側から照射して面発光させるために、前記図柄発光素子群毎にその配列方向に沿う両側から挟むように対の形態で配置された導光板用発光素子のペアとを有する面発光部と、
前記複数の図柄発光素子群とそれらの両側に位置する複数の導光板用発光素子のペアとが前記配列方向に沿って前記表示面側に実装された単一の発光基板とを備え、
前記導光板の延長部の導光板用発光素子側端面に、前記導光板用発光素子から前記導光板の延長部に入った光が前記湾曲部から本体部へ進まずにその延長部を逆行することにより生じる光量損失を軽減するための損失軽減手段が配設され、
前記損失軽減手段は、前記導光板の延長部の導光板用発光素子側端面において、前記導光板用発光素子と非対向となる部位であって、前記配列方向において隣り合う前記図柄発光素子群の間に位置する前記間隔に対応して形成され、前記延長部を逆行する光は前記損失軽減手段で反射・拡散されて当該延長部へ再導入されることを特徴とする。 In order to solve the above problems, a display device for gaming machines of the present invention attached to a gaming machine is
A group of symbol light-emitting elements for displaying a symbol consisting of numbers, letters, etc. in the display area by one or more individual symbol light-emitting elements provided for each segment and notifying the player in a predetermined arrangement direction A segment display section as a main display section arranged with a plurality of intervals ,
A main body that covers the plurality of symbol light emitting element groups of the segment display portion in a planar shape from the player side that is the display surface side, and the plurality of symbol light emitting element groups along the arrangement direction from the main body part through the curved portion A translucent light guide plate including an extension portion extending so as to surround both sides of the light guide plate, and an arrangement thereof for each of the symbol light emitting element groups in order to emit light from the end face side of the extension portion to cause surface light emission. A surface light emitting unit having a pair of light emitting elements for a light guide plate arranged in pairs to sandwich from both sides along the direction ;
A plurality of symbol light emitting element groups and a plurality of light guide plate light emitting element pairs located on both sides thereof, and a single light emitting substrate mounted on the display surface side along the arrangement direction ;
Light that has entered the light guide plate extension from the light guide plate light-emitting element on the light guide plate side end face of the light guide plate extension does not travel from the curved portion to the main body, but reverses the extension. loss reducing means for reducing the light loss caused by it is arranged,
The loss reducing means is a portion of the extension portion of the light guide plate on the light guide plate light emitting element side end surface that is not opposed to the light guide plate light emitting element, and is adjacent to the pattern light emitting element group in the arrangement direction. The light that is formed corresponding to the interval located between them and that travels backward through the extension is reflected and diffused by the loss reducing means and re-introduced into the extension .

この場合、具体的には、
遊技機に取り付けられる遊技機用表示装置であって、
数字・文字等からなる図柄を、セグメント毎に１又は複数設けられた個々の図柄発光素子により、連続する複数の表示領域に各々セグメント表示して遊技者に報知するための図柄発光素子群が所定の配列方向に一列状に複数配列されたメイン表示部としてのセグメント表示部と、
そのセグメント表示部の複数の図柄発光素子群を表示面側となる遊技者側から面状に覆う本体部、及びその本体部から湾曲部を経て前記配列方向に沿って前記複数の図柄発光素子群の両側を囲うように延出する延長部を含む透光性の導光板と、その導光板を前記延長部の端面側から照射して面発光させるために、前記図柄発光素子群毎にその配列方向に沿う両側から挟むように対の形態で複数配置された導光板用発光素子のペアとを有する面発光部と、
前記複数の図柄発光素子群とそれらの両側に位置する複数の導光板用発光素子のペアとが前記配列方向に沿って前記表示面側に実装された単一の発光基板とを備え、
前記導光板の延長部の導光板用発光素子側端面に、前記導光板用発光素子から前記導光板の延長部に入った光が前記湾曲部から本体部へ進まずにその延長部を逆行することにより生じる光量損失を軽減するための損失軽減手段が配設されるように構成することができる。 In this case, specifically,
A display device for a gaming machine attached to a gaming machine,
A symbol light emitting element group is provided for displaying a symbol consisting of numbers, letters, etc., to each player by one or more individual symbol light emitting elements provided for each segment, and informing the player of each segment. A segment display section as a main display section arranged in a line in the arrangement direction of
A main body that covers the plurality of symbol light emitting element groups of the segment display portion in a planar shape from the player side that is the display surface side, and the plurality of symbol light emitting element groups along the arrangement direction from the main body part through the curved portion A translucent light guide plate including an extension portion extending so as to surround both sides of the light guide plate, and an arrangement thereof for each of the symbol light emitting element groups in order to emit light from the end face side of the extension portion to cause surface light emission. A surface light emitting unit having a plurality of pairs of light emitting elements for a light guide plate arranged in pairs to sandwich from both sides along the direction;
A plurality of symbol light emitting element groups and a plurality of light guide plate light emitting element pairs located on both sides thereof, and a single light emitting substrate mounted on the display surface side along the arrangement direction;
Light that has entered the light guide plate extension from the light guide plate light-emitting element on the light guide plate side end face of the light guide plate extension does not travel from the curved portion to the main body, but reverses the extension. It is possible to configure so that a loss reducing means for reducing the light amount loss caused by the above is disposed.

このように、導光板の延長部の導光板用発光素子側端面に、導光板用発光素子の光量損失を軽減するための損失軽減手段が配設されることによって、導光板用発光素子自身やそれを駆動制御するＩＣ等の制御回路にかかる負荷が増大したり、発熱等によって耐久性（寿命）が低下したりするのを防止できる。 As described above, the loss reducing means for reducing the light amount loss of the light emitting element for the light guide plate is disposed on the end face of the light emitting element for the light guide plate of the extension part of the light guide plate. It is possible to prevent an increase in the load applied to a control circuit such as an IC for driving and controlling the deterioration of the durability (life) due to heat generation.

具体的には、損失軽減手段は、導光板の延長部の導光板用発光素子側端面において、導光板用発光素子と非対向となる部位に、その導光板用発光素子から導光板の延長部に入った光が湾曲部から本体部へ進まずにその延長部を逆行することにより生じる光量損失を軽減するための反射層として形成され、延長部を逆行する光はその反射層で反射・拡散されて延長部へ再導入される場合がある。このように、導光板の延長部の導光板用発光素子側端面のうち導光板用発光素子と非対向となる部位、すなわち導光板用発光素子の光軸から離間した部位に反射層を形成することによって、延長部を逆行する光が反射層で反射され、延長部へ再導入される。したがって、導光板の延長部の導光板用発光素子側端面から漏洩する光を減少させることができるので、導光板用発光素子等の負荷を増大させたり、耐久性（寿命）を低下させたりすることを防止できる。 Specifically, the loss reducing means is configured such that the light guide plate light emitting element extends from the light guide plate light emitting element to the light guide plate light emitting element side end surface of the light guide plate extension portion on the light guide plate light emitting element side end surface. It is formed as a reflective layer to reduce the loss of light amount caused by the light entering the back part of the extension part without going from the curved part to the body part, and the light that goes back the extension part is reflected and diffused by the reflection layer. May be reintroduced into the extension. In this way, the reflective layer is formed in a portion of the extension portion of the light guide plate on the light guide plate light emitting element side end surface that is not opposed to the light guide plate light emitting element, that is, a portion separated from the optical axis of the light guide plate light emitting element. As a result, the light traveling backward through the extension is reflected by the reflective layer and reintroduced into the extension. Therefore, light leaking from the light guide plate light emitting element side end surface of the extension portion of the light guide plate can be reduced, so that the load on the light guide plate light emitting element or the like is increased or the durability (life) is reduced. Can be prevented.

ここでの反射層は、白色塗料の塗装、白色反射シールの貼付、アルミニウム等の真空蒸着等により形成され、特に簡便な方法である白色塗装が推奨される。 The reflective layer here is formed by painting with a white paint, sticking a white reflective seal, vacuum deposition of aluminum or the like, and white coating, which is a particularly simple method, is recommended.

また、損失軽減手段は、導光板の延長部の導光板用発光素子側端面において、導光板用発光素子と非対向となる部位に、その導光板用発光素子から導光板の延長部に入った光が湾曲部から本体部へ進まずにその延長部を逆行することにより生じる光量損失を軽減するための凹凸部として形成され、延長部を逆行する光はその凹凸部で反射・拡散されて延長部へ再導入される場合がある。このように、導光板の延長部の導光板用発光素子側端面のうち導光板用発光素子と非対向となる部位、すなわち導光板用発光素子の光軸から離間した部位に凹凸部を形成することによって、延長部を逆行する光が凹凸部で反射され、延長部へ再導入される。したがって、導光板の延長部の導光板用発光素子側端面から漏洩する光を減少させることができるので、導光板用発光素子等の負荷を増大させたり、耐久性（寿命）を低下させたりすることを防止できる。 Further, the loss reducing means enters the extension portion of the light guide plate from the light emitting element for the light guide plate at a portion that is not opposed to the light emitting element for the light guide plate on the light emitting element side end surface of the extension portion of the light guide plate. It is formed as a concavo-convex part to reduce the amount of light loss caused by reversing the extension part without going from the curved part to the main body part, and the light going back through the extension part is reflected and diffused by the concavo-convex part and extended May be reintroduced to the department. As described above, the uneven portion is formed in a portion of the light guide plate light emitting element side end surface of the extension portion of the light guide plate that is not opposed to the light guide plate light emitting element, that is, a portion separated from the optical axis of the light guide plate light emitting element. As a result, the light traveling backward through the extension is reflected by the concavo-convex portion and reintroduced into the extension. Therefore, light leaking from the light guide plate light emitting element side end surface of the extension portion of the light guide plate can be reduced, so that the load on the light guide plate light emitting element or the like is increased or the durability (life) is reduced. Can be prevented.

ここでの凹凸部は、鋸歯状（三角柱状）、ピラミッド状（四角錐状）等のきざみ（ギザギザ）を付けるローレット目等により形成される。 The uneven portions here are formed by knurled eyes or the like which are provided with notches (notches) such as a sawtooth shape (triangular prism shape) and a pyramid shape (quadrangular pyramid shape).

一方、導光板の延長部の導光板用発光素子側端面において、導光板用発光素子と対向する部位には、導光板用発光素子から導光板の延長部に入る光の指向性を広域化させるための起伏部が形成されている場合がある。このように、導光板の延長部の導光板用発光素子側端面のうち導光板用発光素子と対向する部位、すなわち導光板用発光素子の光軸を含む部位に起伏部を形成することによって、導光板用発光素子から導光板の延長部に入る光の広がり角が大きくなる。したがって、図柄を示す発光を包み込むような発光態様を実現するために、導光板用発光素子の取付ピッチを小さくして個数を増やしたり、各素子の発光の際のデューティ比を大きくしたりせずにすむので、導光板用発光素子等の負荷を増大させたり、耐久性（寿命）を低下させたりすることを防止できる。 On the other hand, the directivity of light entering the extension part of the light guide plate from the light emission element for the light guide plate is widened at the portion facing the light emission element for the light guide plate on the end surface of the light guide plate light emitting element side of the extension part of the light guide plate In some cases, undulations are formed. In this way, by forming the undulating portion in the portion of the light guide plate light emitting element side end surface of the extension portion of the light guide plate facing the light guide plate light emitting element, that is, the portion including the optical axis of the light guide plate light emitting element, The spread angle of light entering the extension portion of the light guide plate from the light emitting element for the light guide plate is increased. Therefore, in order to realize a light emission mode that envelops the light emission showing the design, the mounting pitch of the light emitting elements for the light guide plate is not reduced, the number is increased, and the duty ratio at the time of light emission of each element is not increased. Therefore, it is possible to prevent the load of the light emitting element for the light guide plate and the like from being increased, and the durability (life) from being reduced.

ここで、対向部位に形成される起伏部は非対向部位に形成される凹凸部と同形態に構成され、両者は導光板の延長部の導光板用発光素子側端面において連続的に配置されることが望ましい。起伏部と凹凸部とを同形態で連続的に配置することによって、これらの面加工（ローレット加工）に要するコストが安価になる。なお、対向部位に形成される起伏部の深さやピッチは、導光板用発光素子の（波長毎の）指向特性、導光板用発光素子と導光板用発光素子側端面との離間距離等をパラメータとして決定される。 Here, the undulations formed in the facing part are configured in the same form as the concavo-convex part formed in the non-facing part, and both are continuously arranged on the light guide element side end surface of the extension part of the light guide plate. It is desirable. By continuously arranging the undulating portion and the uneven portion in the same form, the cost required for these surface processing (knurling) is reduced. In addition, the depth and pitch of the undulations formed in the facing part are parameters such as the directivity characteristics (for each wavelength) of the light guide element for the light guide plate, the separation distance between the light guide element for the light guide plate and the light emitting element side end surface As determined.

また、導光板の延長部の導光板用発光素子側端面において、導光板用発光素子と対向する部位には、その導光板用発光素子から導光板の延長部に入る光の指向性を広域化させるための曲面状凹部が形成されている場合がある。このように、導光板の延長部の導光板用発光素子側端面のうち導光板用発光素子と対向する部位、すなわち導光板用発光素子の光軸を含む部位に曲面状凹部を形成することによって、導光板用発光素子から導光板の延長部に入る光の広がり角が大きくなる。したがって、図柄を示す発光を包み込むような発光態様を実現するために、導光板用発光素子の取付ピッチを小さくして個数を増やしたり、各素子の発光の際のデューティ比を大きくしたりせずにすむので、導光板用発光素子等の負荷を増大させたり、耐久性（寿命）を低下させたりすることを防止できる。 In addition, on the light guide plate light emitting element side end surface of the extension portion of the light guide plate, the directivity of light entering the extension portion of the light guide plate from the light guide plate light emitting element is widened at the portion facing the light guide plate light emitting element. In some cases, a curved concave portion is formed. In this way, by forming the curved concave portion in the portion facing the light guide plate light emitting element of the light guide plate light emitting element side end surface of the extension portion of the light guide plate, that is, the portion including the optical axis of the light guide plate light emitting element. The spread angle of light entering from the light emitting element for the light guide plate to the extension portion of the light guide plate is increased. Therefore, in order to realize a light emission mode that envelops the light emission showing the design, the mounting pitch of the light emitting elements for the light guide plate is not reduced, the number is increased, and the duty ratio at the time of light emission of each element is not increased. Therefore, it is possible to prevent the load of the light emitting element for the light guide plate and the like from being increased, and the durability (life) from being reduced.

ここで、対向部位に形成される曲面状凹部は半円柱面状又は半球面状のアーク形状（アーチ形状）に形成されることが望ましい。これによって、導光板用発光素子から導光板の延長部に入る光が均等に広げられ拡散しやすくなる。なお、対向部位に形成される曲面状凹部の深さや開口面積も、導光板用発光素子の（波長毎の）指向特性、導光板用発光素子と導光板用発光素子側端面との離間距離等をパラメータとして決定される。 Here, it is desirable that the curved concave portion formed in the facing portion is formed in a semi-cylindrical surface shape or a hemispherical arc shape (arch shape). As a result, the light that enters the extended portion of the light guide plate from the light emitting element for the light guide plate is evenly spread and easily diffused. In addition, the depth and opening area of the curved concave portion formed in the facing part are also the directivity characteristics (for each wavelength) of the light-emitting element for the light guide plate, the separation distance between the light-emitting element for the light guide plate and the end face on the light-emitting element side of the light guide plate Is determined as a parameter.

（実施例１）
本発明を適用した遊技機用表示装置の実施例を図面を参照しつつ説明する。図１は本発明に係る遊技機用表示装置の一実施例の正面図及び背面図、図２はその側面断面図を表わす。図１及び図２に示すように、遊技機用表示装置（以下、単に表示装置ともいう）１は全体として矩形の箱状を呈している。表示装置１は、樹脂製で不透光性（例えば不透明）のケース３に、背面側（後方側；遊技者とは反対側）からセグメント表示部１０（メイン表示部）と面発光部２０とがそれぞれの表示面（発光面）を正面側（前方側；遊技者側）に向けて収容され、さらに矩形状の発光基板４（共通基板）と裏カバー５とがケース３の後方側を覆っている。 Example 1
An embodiment of a display device for gaming machines to which the present invention is applied will be described with reference to the drawings. FIG. 1 is a front view and a rear view of an embodiment of a display device for gaming machines according to the present invention, and FIG. 2 is a side sectional view thereof. As shown in FIGS. 1 and 2, a display device for gaming machines (hereinafter also simply referred to as a display device) 1 has a rectangular box shape as a whole. The display device 1 includes a resin-made opaque case 3 (for example, opaque), a segment display unit 10 (main display unit) and a surface light emitting unit 20 from the back side (rear side; opposite to the player). Are accommodated with their respective display surfaces (light emitting surfaces) facing the front side (front side; player side), and the rectangular light emitting substrate 4 (common substrate) and the back cover 5 cover the rear side of the case 3. ing.

このうち、セグメント表示部１０は、数字・文字等からなる図柄（例えば、０〜９の１０種類の数字）を選択表示可能で、所定方向（配列方向）に直線的な一列状に連続する複数（例えば３桁）の表示領域１０Ａ〜１０Ｃを含んで構成されている。 Among these, the segment display unit 10 can select and display a pattern (for example, 10 types of numbers from 0 to 9) made up of numbers, letters, etc., and a plurality of continuous lines in a predetermined direction (arrangement direction). It is configured to include display areas 10A to 10C (for example, three digits).

具体的には、セグメント表示部１０は、各表示領域１０Ａ〜１０Ｃを複数（例えば、“８”字形状に断片的に組み合わされた７個）のセグメントに区画するセグメント構成フレームとしての樹脂製の単一のリフレクタ１２と、表示領域１０Ａ〜１０Ｃに一致させて配列方向に複数（例えば３組）配列された図柄発光素子群１１と、を有している。これらの図柄発光素子群１１を構成する個々のセグメントＬＥＤ（図柄発光素子）は、セグメント毎に１個ずつ（７個×３組＝計２１個）設けられ、それぞれ発光ダイオード（例えば赤色単色ＬＥＤ）ＬＥＤ１３〜３３からなる。したがって、リフレクタ１２を前後方向に貫通形成する２１個の中空状のセグメントには、それぞれ発光ダイオードＬＥＤ１３〜３３の光軸が遊技者側（表示面側；前方側）に向けて配置され、中空状セグメントの側壁は反射面として作用する。 Specifically, the segment display unit 10 is made of resin as a segment-constituting frame that divides each display area 10A to 10C into a plurality of segments (for example, seven pieces that are combined in a “8” shape). It has a single reflector 12 and a plurality of (for example, three sets) symbol light emitting element groups 11 arranged in the arrangement direction so as to coincide with the display areas 10A to 10C. Each segment LED (symbol light emitting element) constituting the symbol light emitting element group 11 is provided for each segment (7 × 3 sets = 21 in total), and each light emitting diode (for example, red single color LED) is provided. It consists of LEDs 13-33. Accordingly, the 21 hollow segments penetrating the reflector 12 in the front-rear direction are arranged with the optical axes of the light-emitting diodes LEDs 13 to 33 facing the player side (display surface side; front side), respectively. The side wall of the segment acts as a reflective surface.

また、面発光部２０は、アクリル等の樹脂、ガラス等からなる透光性の（例えば透明な）単一の導光板２２と、図柄発光素子群１１毎にその配列方向に沿う両側から挟むように対の形態で複数（例えば６対）配置された導光板用発光素子対２１とを有している。 Further, the surface light emitting unit 20 is sandwiched from both sides along the arrangement direction for each light emitting element group 11 and a single light-transmitting (for example, transparent) light guide plate 22 made of resin such as acrylic, glass, or the like. And a plurality of (for example, six pairs) light-emitting plate pairs 21 arranged in pairs.

具体的には、導光板２２は、平板状の本体部２２ａと、本体部２２ａの配列方向（長手方向）両側から突出する延長部２２ｂと、本体部２２ａと延長部２２ｂとを円弧状に接続する湾曲部２２ｃと、を含んで構成されている。本体部２２ａは、セグメント表示部１０、すなわち３組の図柄発光素子群１１及び単一のリフレクタ１２を表示面側（遊技者側；前方側）から面状に覆っている。延長部２２ｂは、本体部２２ａから配列方向に沿ってそれらの図柄発光素子群１１の両側を囲うように後方側に延出している。また、導光板用発光素子対２１を構成する個々の導光板ＬＥＤ（導光板用発光素子）は、図柄発光素子群１１（表示領域１０Ａ〜１０Ｃ）毎に４個ずつ（４個×３組＝計１２個；導光板用発光素子対２１で見ると２対ずつ）設けられ、それぞれ発光ダイオード（例えばＲＧＢ３色フルカラーＬＥＤ）ＬＥＤ１〜１２からなる。ただし、Ｒは赤色(red)、Ｇは緑色(green)、Ｂは青色(blue)を表わす。 Specifically, the light guide plate 22 connects the flat main body portion 22a, the extension portion 22b protruding from both sides in the arrangement direction (longitudinal direction) of the main body portion 22a, and the main body portion 22a and the extension portion 22b in an arc shape. And a curved portion 22c. The main body 22a covers the segment display unit 10, that is, the three sets of symbol light emitting element groups 11 and the single reflector 12 in a planar shape from the display surface side (player side; front side). The extension 22b extends rearward from the main body 22a so as to surround both sides of the symbol light emitting element group 11 along the arrangement direction. In addition, each of the light guide plate LEDs (light guide plate light emitting elements) constituting the light guide plate light emitting element pair 21 is four (4 × 3 sets) for each of the symbol light emitting element groups 11 (display areas 10A to 10C). A total of twelve (two pairs of light-emitting element pairs for the light guide plate 21) are provided, each of which is composed of light-emitting diodes (for example, RGB three-color full-color LEDs) LEDs 1-12. Here, R represents red, G represents green, and B represents blue.

図１（ａ）のように、導光板用発光素子対２１が、図柄発光素子群１１毎にその配列方向に沿う両側から挟むように対の形態で平行に配置されることによって、導光板用発光素子対２１（例えば、発光ダイオードＬＥＤ１及び発光ダイオードＬＥＤ２）の光軸を結ぶ線は配列方向と交差（例えば直交）することになる。また、図２に示すように、導光板２２の延長部２２ｂは、発光基板４側へ近づくように本体部２２ａと交差（例えば直交）して、その先端面が導光板用発光素子対２１（発光ダイオードＬＥＤ１〜１２）とごく近接するか又は当接している。したがって、導光板用発光素子対２１（発光ダイオードＬＥＤ１〜１２）の光軸は、延長部２２ｂでは、図柄発光素子群１１（発光ダイオードＬＥＤ１３〜３３）の光軸と略平行であり、発光基板４と略直交する。一方、導光板用発光素子対２１の光軸は、本体部２２ａではリフレクタ１２の前方側において、図柄発光素子群１１の光軸と交差（例えば直交）し、発光基板４と略平行である。 As shown in FIG. 1A, the light-emitting plate pair 21 for the light guide plate is arranged in parallel in the form of a pair so as to be sandwiched from both sides along the arrangement direction for each pattern light-emitting element group 11. A line connecting the optical axes of the light emitting element pair 21 (for example, the light emitting diode LED1 and the light emitting diode LED2) intersects (for example, orthogonal) with the arrangement direction. Further, as shown in FIG. 2, the extension 22b of the light guide plate 22 intersects (for example, orthogonally) with the main body 22a so as to approach the light emitting substrate 4 side, and the front end surface of the light guide plate light emitting element pair 21 ( It is very close to or in contact with the light emitting diodes LED1-12). Therefore, the optical axis of the light-emitting plate pair 21 (light-emitting diodes LED1 to 12) is substantially parallel to the optical axis of the symbol light-emitting element group 11 (light-emitting diodes LED13 to 33) in the extension 22b. And approximately orthogonal. On the other hand, the optical axis of the light-emitting plate pair 21 for the light guide plate intersects (for example, is orthogonal to) the optical axis of the symbol light-emitting element group 11 on the front side of the reflector 12 in the main body portion 22 a and is substantially parallel to the light-emitting substrate 4.

単一の矩形状の発光基板４の前方側（表示面側）に、複数（３組）の図柄発光素子群１１とそれらの両側に平行状に配置された複数（６対）の導光板用発光素子対２１とが、複数（３桁）の表示領域１０Ａ〜１０Ｃの配列方向に沿って実装されている。なお、発光基板４の実装面（導光板用発光素子実装面）は全体が白色に塗装され、導光板２２の延長部２２ｂを逆行する光を反射して延長部２２ｂへ再導入するための反射層４Ａ（損失軽減手段）を形成している。 For a plurality (6 pairs) of light guide plates arranged in parallel on both sides of a plurality (three sets) of symbol light emitting element groups 11 on the front side (display surface side) of a single rectangular light emitting substrate 4 The light emitting element pair 21 is mounted along the arrangement direction of a plurality (three digits) of display areas 10A to 10C. The mounting surface of the light-emitting substrate 4 (light-emitting element mounting surface for the light guide plate) is entirely painted white, and the reflection for reflecting the light traveling backward through the extension 22b of the light guide plate 22 and reintroducing it into the extension 22b. The layer 4A (loss reducing means) is formed.

以上のように構成された表示装置１の作動について説明する。各図柄発光素子群１１を構成する個々の発光ダイオードＬＥＤ１３〜１９，２０〜２６，２７〜〜３３が選択的に発光すると、各表示領域１０Ａ〜１０Ｃに所定の図柄がセグメント表示される。一方、各導光板用発光素子対２１を構成する個々の発光ダイオードＬＥＤ１〜１２が発光し、その光が導光板２２の延長部２２ｂを通り湾曲部２２ｃを経て本体部２２ａに導かれ、導光板２２を面発光させる。その結果、遊技者は、セグメント表示部１０の各図柄（各表示領域１０Ａ〜１０Ｃ）の発光態様と、導光板２２（面発光部２０）の全体的な面状の発光態様との重層された発光表示形態を視認できる。 The operation of the display device 1 configured as described above will be described. When the individual light-emitting diodes LED 13 to 19, 20 to 26, and 27 to 33 that make up each of the symbol light emitting element groups 11 selectively emit light, a predetermined symbol is displayed as a segment in each of the display areas 10 </ b> A to 10 </ b> C. On the other hand, each light emitting diode LED1-12 which comprises each light emitting element pair 21 for light-guide plates light-emits, The light is guide | induced to the main-body part 22a through the extended part 22b of the light-guide plate 22, the curved part 22c, and a light-guide plate 22 emits light. As a result, the player was layered with the light emission mode of each symbol (each display area 10A to 10C) of the segment display unit 10 and the overall planar light emission mode of the light guide plate 22 (surface light emitting unit 20). The light emitting display form can be visually recognized.

このように、導光板用発光素子対２１を構成する個々の発光ダイオードＬＥＤ１〜１２にＲＧＢ３色フルカラーＬＥＤを採用し、その発光ダイオードＬＥＤ１〜１２の１個ずつを単位として面発光部２０の発光態様を変化させている。それによって、面発光パターンを素子１個単位で微細に制御して、表示装置１のグラデーション効果を高めることができる。 In this way, RGB three-color full color LEDs are adopted for the individual light emitting diodes LED1 to 12 constituting the light emitting element pair 21 for the light guide plate, and the light emitting mode of the surface light emitting unit 20 with each of the light emitting diodes LED1 to 12 as a unit. Is changing. Thereby, the surface emitting pattern can be finely controlled in units of one element, and the gradation effect of the display device 1 can be enhanced.

次に、図３は要部の斜視図、図４はその長手方向側面図を示す。導光板２２の延長部２２ｂの導光板用発光素子側端面において、導光板用発光素子２１と非対向となる部位２２ｂ１（非対向部位）は白色に塗装され、導光板２２の延長部２２ｂを逆行する光を反射して延長部２２ｂへ再導入するための反射層２３（損失軽減手段）を形成している。図４に示すように、導光板用発光素子２１から導光板２２の延長部２２ｂに入った光が湾曲部２２ｃから本体部２２ａへ進まずに延長部２２ｂを逆行しても、非対向部位２２ｂ１（すなわち導光板用発光素子の光軸から離間した部位）に形成された反射層２３で反射・拡散されて、延長部２２ｂへ再導入されるので、導光板用発光素子側端面からの光量損失を軽減することができる。したがって、導光板用発光素子２１自身やそれを駆動制御するＩＣ等の制御回路にかかる負荷が増大したり、発熱等によって耐久性（寿命）が低下したりするのを防止できる。 Next, FIG. 3 is a perspective view of a main part, and FIG. 4 is a longitudinal side view thereof. On the light guide plate light emitting element side end surface of the extension portion 22b of the light guide plate 22, a portion 22b1 (non-opposing portion) that is not opposed to the light guide plate light emitting element 21 is painted white, and the extension portion 22b of the light guide plate 22 is reversed. The reflection layer 23 (loss reduction means) for reflecting the light to be reflected and reintroducing it into the extension 22b is formed. As shown in FIG. 4, even if the light that has entered the extension 22b of the light guide plate 22 from the light-emitting element 21 for the light guide plate does not travel from the curved portion 22c to the main body 22a, and moves backward through the extension 22b, the non-opposing portion 22b1 Since the light is reflected / diffused by the reflective layer 23 formed at the portion separated from the optical axis of the light-emitting element for the light guide plate and re-introduced into the extension portion 22b, the light amount loss from the light-emitting element side end face for the light guide plate Can be reduced. Therefore, it is possible to prevent the load applied to the light-guiding plate light-emitting element 21 itself and a control circuit such as an IC that controls driving of the light-emitting plate 21 from being increased or the durability (lifetime) from being reduced due to heat generation or the like.

（変形例１−１）
図５に実施例１の変形例を示す。導光板２２の延長部２２ｂの導光板用発光素子側端面において、導光板用発光素子２１と対向する部位２２ｂ２（対向部位）には、導光板用発光素子２１から導光板２２の延長部２２ｂに入る光の指向性を広域化させるための半円柱面状のアーク部２５（曲面状凹部）が形成されている。図５（ｂ）に示すように、対向部位２２ｂ２（すなわち導光板用発光素子２１の光軸を含む部位）に形成されたアーク部２５によって、導光板用発光素子２１から導光板２２の延長部２２ｂに入る光の広がり角θが大きくなる。したがって、図柄を示す発光を包み込むような発光態様を実現するために、導光板用発光素子２１の取付ピッチを小さくして個数を増やしたり、各素子２１の発光の際のデューティ比を大きくしたりせずにすむので、導光板用発光素子２１自身やそれを駆動制御するＩＣ等の制御回路にかかる負荷が増大したり、発熱等によって耐久性（寿命）が低下したりするのを防止できる。 (Modification 1-1)
FIG. 5 shows a modification of the first embodiment. On the light guide plate light emitting element side end face of the extension portion 22b of the light guide plate 22, a portion 22b2 (opposite portion) facing the light guide plate light emitting element 21 is extended from the light guide plate light emitting element 21 to the extension portion 22b of the light guide plate 22. A semi-cylindrical arc portion 25 (curved concave portion) is formed for widening the directivity of incoming light. As shown in FIG. 5B, the arc portion 25 formed in the facing portion 22b2 (that is, the portion including the optical axis of the light guide plate light emitting element 21) extends the light guide plate 22 from the light guide plate light emitting element 21. The spread angle θ of light entering 22b is increased. Therefore, in order to realize a light emission mode that encloses light emission indicating a design, the mounting pitch of the light guide elements 21 for the light guide plate is decreased to increase the number, or the duty ratio at the time of light emission of each element 21 is increased. Therefore, it is possible to prevent an increase in the load on the light-emitting element 21 for the light guide plate itself and a control circuit such as an IC for driving and controlling the light-emitting element 21 and a decrease in durability (life) due to heat generation.

（実施例２）
図６は他の実施例に係る要部の斜視図、図７はその長手方向側面図を示す。導光板２２の延長部２２ｂの導光板用発光素子側端面において、導光板用発光素子２１と非対向となる部位２２ｂ１（非対向部位）には、導光板２２の延長部２２ｂを逆行する光を反射して延長部２２ｂへ再導入するための鋸歯状（三角柱状）の第一ローレット部２４Ａ（凹凸部；損失軽減手段）が形成されている。図７に示すように、導光板用発光素子２１から導光板２２の延長部２２ｂに入った光が湾曲部２２ｃから本体部２２ａへ進まずに延長部２２ｂを逆行しても、非対向部位２２ｂ１（すなわち導光板用発光素子の光軸から離間した部位）に形成された第一ローレット部２４Ａで反射・拡散されて、延長部２２ｂへ再導入されるので、導光板用発光素子側端面からの光量損失を軽減することができる。したがって、導光板用発光素子２１自身やそれを駆動制御するＩＣ等の制御回路にかかる負荷が増大したり、発熱等によって耐久性（寿命）が低下したりするのを防止できる。 (Example 2)
FIG. 6 is a perspective view of a main part according to another embodiment, and FIG. 7 is a longitudinal side view thereof. On the end surface of the extension portion 22b of the light guide plate 22 on the light emitting element side of the light guide plate, light that travels backward through the extension portion 22b of the light guide plate 22 is applied to a portion 22b1 (non-opposing portion) that does not face the light emitting element 21 for light guide plate. A saw-toothed (triangular prism-shaped) first knurled portion 24A (uneven portion; loss reducing means) is formed for reflection and re-introduction into the extended portion 22b. As shown in FIG. 7, even if the light that has entered the extension portion 22b of the light guide plate 22 from the light-emitting element 21 for the light guide plate does not travel from the curved portion 22c to the main body portion 22a, the extension portion 22b travels backward. That is, the light is reflected and diffused by the first knurled portion 24A formed at the portion separated from the optical axis of the light emitting element for the light guide plate, and is re-introduced into the extension portion 22b. Light loss can be reduced. Therefore, it is possible to prevent the load applied to the light-guiding plate light-emitting element 21 itself and a control circuit such as an IC that controls driving of the light-emitting plate 21 from being increased or the durability (lifetime) from being reduced due to heat generation or the like.

また、導光板２２の延長部２２ｂの導光板用発光素子側端面において、導光板用発光素子２１と対向する部位２２ｂ２（対向部位）には、導光板用発光素子２１から導光板２２の延長部２２ｂに入る光の指向性を広域化させるための鋸歯状（三角柱状）の第二ローレット部２４Ｂ（起伏部）が形成されている。図７に示すように、対向部位２２ｂ２（すなわち導光板用発光素子２１の光軸を含む部位）に形成された第二ローレット部２４Ｂによって、導光板用発光素子２１から導光板２２の延長部２２ｂに入る光の広がり角θが大きくなる。したがって、図柄を示す発光を包み込むような発光態様を実現するために、導光板用発光素子２１の取付ピッチを小さくして個数を増やしたり、各素子２１の発光の際のデューティ比を大きくしたりせずにすむので、導光板用発光素子２１自身やそれを駆動制御するＩＣ等の制御回路にかかる負荷が増大したり、発熱等によって耐久性（寿命）が低下したりするのを防止できる。なお、第二ローレット部２４Ｂは第一ローレット部２４Ａと同形態で連続的に配置されているので、ローレット加工に要するコストが安価になる。 Further, on the end surface of the light guide plate light emitting element side of the extension portion 22b of the light guide plate 22, an extension portion of the light guide plate 22 from the light guide plate light emitting element 21 is provided at a portion 22b2 (opposite portion) facing the light guide plate light emitting element 21. A sawtooth-shaped (triangular prism-shaped) second knurled portion 24B (undulation) is formed to widen the directivity of light entering 22b. As shown in FIG. 7, the second knurled portion 24B formed in the facing portion 22b2 (that is, the portion including the optical axis of the light guide plate light emitting element 21) extends from the light guide plate light emitting element 21 to the extension portion 22b of the light guide plate 22. The spread angle θ of the light that enters is increased. Therefore, in order to realize a light emission mode that encloses light emission indicating a design, the mounting pitch of the light guide elements 21 for the light guide plate is decreased to increase the number, or the duty ratio at the time of light emission of each element 21 is increased. Therefore, it is possible to prevent an increase in the load on the light-emitting element 21 for the light guide plate itself and a control circuit such as an IC for driving and controlling the light-emitting element 21 and a decrease in durability (life) due to heat generation. Since the second knurled portion 24B is continuously arranged in the same form as the first knurled portion 24A, the cost required for knurling is reduced.

（変形例２−１）
図８に実施例２の変形例を示す。導光板２２の延長部２２ｂの導光板用発光素子側端面において、導光板用発光素子２１と対向する部位２２ｂ２（対向部位）には、導光板用発光素子２１から導光板２２の延長部２２ｂに入る光の指向性を広域化させるための半円柱面状のアーク部２５（曲面状凹部）が形成されている。図８（ｂ）に示すように、対向部位２２ｂ２（すなわち導光板用発光素子２１の光軸を含む部位）に形成されたアーク部２５によって、導光板用発光素子２１から導光板２２の延長部２２ｂに入る光の広がり角θが大きくなる。したがって、図柄を示す発光を包み込むような発光態様を実現するために、導光板用発光素子２１の取付ピッチを小さくして個数を増やしたり、各素子２１の発光の際のデューティ比を大きくしたりせずにすむので、導光板用発光素子２１自身やそれを駆動制御するＩＣ等の制御回路にかかる負荷が増大したり、発熱等によって耐久性（寿命）が低下したりするのを防止できる。 (Modification 2-1)
FIG. 8 shows a modification of the second embodiment. On the light guide plate light emitting element side end face of the extension portion 22b of the light guide plate 22, a portion 22b2 (opposite portion) facing the light guide plate light emitting element 21 is extended from the light guide plate light emitting element 21 to the extension portion 22b of the light guide plate 22. A semi-cylindrical arc portion 25 (curved concave portion) is formed for widening the directivity of incoming light. As shown in FIG. 8B, an extension portion of the light guide plate 22 from the light emitting element 21 for the light guide plate is formed by the arc portion 25 formed in the facing portion 22 b 2 (that is, the portion including the optical axis of the light emitting element 21 for the light guide plate). The spread angle θ of light entering 22b is increased. Therefore, in order to realize a light emission mode that encloses light emission indicating a design, the mounting pitch of the light guide elements 21 for the light guide plate is decreased to increase the number, or the duty ratio at the time of light emission of each element 21 is increased. Therefore, it is possible to prevent an increase in the load on the light-emitting element 21 for the light guide plate itself and a control circuit such as an IC for driving and controlling the light-emitting element 21 and a decrease in durability (life) due to heat generation.

（変形例２−２）
図９に実施例２の他の変形例を示す。導光板２２の延長部２２ｂの導光板用発光素子側端面において、導光板用発光素子２１と非対向となる部位２２ｂ１（非対向部位）に形成された第一ローレット部２４Ａ（凹凸部；損失軽減手段）が白色に塗装され、導光板２２の延長部２２ｂを逆行する光を反射して延長部２２ｂへ再導入するための反射層２３（損失軽減手段）を構成している。図９（ｂ）に示すように、導光板用発光素子２１から導光板２２の延長部２２ｂに入った光が湾曲部２２ｃから本体部２２ａへ進まずに延長部２２ｂを逆行しても、非対向部位２２ｂ１（すなわち導光板用発光素子の光軸から離間した部位）に形成された第一ローレット部２４Ａ及び反射層２３で反射・拡散されて、延長部２２ｂへ再導入されるので、導光板用発光素子側端面からの光量損失を軽減することができる。したがって、導光板用発光素子２１自身やそれを駆動制御するＩＣ等の制御回路にかかる負荷が増大したり、発熱等によって耐久性（寿命）が低下したりするのを防止できる。 (Modification 2-2)
FIG. 9 shows another modification of the second embodiment. The first knurled portion 24A (uneven portion; loss reduction) formed in a portion 22b1 (non-facing portion) that is not opposed to the light-emitting plate light-emitting element 21 on the light-emitting plate-side light emitting element side end surface of the extension 22b of the light guide plate 22 Means) is coated in white, and constitutes a reflection layer 23 (loss reduction means) for reflecting the light traveling backward through the extension 22b of the light guide plate 22 and reintroducing it into the extension 22b. As shown in FIG. 9B, even if the light that has entered the extension 22b of the light guide plate 22 from the light emitting element 21 for the light guide plate does not travel from the curved portion 22c to the main body 22a, The light guide plate is reflected and diffused by the first knurled portion 24A and the reflective layer 23 formed in the facing portion 22b1 (that is, a portion separated from the optical axis of the light emitting element for the light guide plate) and re-introduced into the extension portion 22b. Light loss from the light emitting element side end face can be reduced. Therefore, it is possible to prevent the load applied to the light-guiding plate light-emitting element 21 itself and a control circuit such as an IC that controls driving of the light-emitting plate 21 from being increased or the durability (lifetime) from being reduced due to heat generation or the like.

（変形例２−３）
図１０に実施例２のさらに他の変形例を示し、図９（変形例２−２）を次のように変形してある。すなわち、導光板２２の延長部２２ｂの導光板用発光素子側端面において、導光板用発光素子２１と対向する部位２２ｂ２（対向部位）には、導光板用発光素子２１から導光板２２の延長部２２ｂに入る光の指向性を広域化させるための半円柱面状のアーク部２５（曲面状凹部）が形成されている。図１０（ｂ）に示すように、対向部位２２ｂ２（すなわち導光板用発光素子２１の光軸を含む部位）に形成されたアーク部２５によって、導光板用発光素子２１から導光板２２の延長部２２ｂに入る光の広がり角θが大きくなる。したがって、図柄を示す発光を包み込むような発光態様を実現するために、導光板用発光素子２１の取付ピッチを小さくして個数を増やしたり、各素子２１の発光の際のデューティ比を大きくしたりせずにすむので、導光板用発光素子２１自身やそれを駆動制御するＩＣ等の制御回路にかかる負荷が増大したり、発熱等によって耐久性（寿命）が低下したりするのを防止できる。 (Modification 2-3)
FIG. 10 shows still another modification of the second embodiment, and FIG. 9 (modification 2-2) is modified as follows. That is, on the end surface of the light guide plate light emitting element side of the extension portion 22b of the light guide plate 22, the extension portion of the light guide plate 22 from the light guide plate light emitting element 21 is located at a portion 22b2 (opposite portion) facing the light guide plate light emitting element 21. A semi-cylindrical arc portion 25 (curved concave portion) for widening the directivity of light entering 22b is formed. As shown in FIG. 10B, the arc portion 25 formed in the facing portion 22b2 (that is, the portion including the optical axis of the light guide plate light emitting element 21) extends the light guide plate 22 from the light guide plate light emitting element 21. The spread angle θ of light entering 22b is increased. Therefore, in order to realize a light emission mode that encloses light emission indicating a design, the mounting pitch of the light guide elements 21 for the light guide plate is decreased to increase the number, or the duty ratio at the time of light emission of each element 21 is increased. Therefore, it is possible to prevent an increase in the load on the light-emitting element 21 for the light guide plate itself and a control circuit such as an IC for driving and controlling the light-emitting element 21 and a decrease in durability (life) due to heat generation.

（参考例）
図１１に図５（変形例１−１），図８（変形例２−１）及び図１０（変形例２−３）の基礎をなす参考例を示す。すなわち、導光板２２の延長部２２ｂの導光板用発光素子側端面において、導光板用発光素子２１と対向する部位２２ｂ２（対向部位）には、導光板用発光素子２１から導光板２２の延長部２２ｂに入る光の指向性を広域化させるための半円柱面状のアーク部２５（曲面状凹部）が形成されている。図１１（ｂ）に示すように、対向部位２２ｂ２（すなわち導光板用発光素子２１の光軸を含む部位）に形成されたアーク部２５への入射の際の屈折によって、導光板用発光素子２１から導光板２２の延長部２２ｂに入る光の広がり角θが大きくなる（図１３参照）。なお、光の入射の際の屈折による広がり角θの拡大は、図７（実施例２）及び図９（変形例２−２）の第二ローレット部２４Ｂでも発生しているが、これらの図中では詳細が省略されている。 (Reference example)
FIG. 11 shows a reference example that forms the basis of FIG. 5 (Modification 1-1), FIG. 8 (Modification 2-1), and FIG. 10 (Modification 2-3). That is, on the end surface of the light guide plate light emitting element side of the extension portion 22b of the light guide plate 22, the extension portion of the light guide plate 22 from the light guide plate light emitting element 21 is located at a portion 22b2 (opposite portion) facing the light guide plate light emitting element 21. A semi-cylindrical arc portion 25 (curved concave portion) for widening the directivity of light entering 22b is formed. As shown in FIG. 11 (b), the light-emitting element 21 for the light guide plate is refracted when incident on the arc portion 25 formed in the facing part 22b2 (that is, the part including the optical axis of the light-emitting element 21 for the light guide plate). The spread angle θ of light entering the extended portion 22b of the light guide plate 22 from the light increases (see FIG. 13). The expansion of the spread angle θ due to refraction at the time of incidence of light occurs also in the second knurl portion 24B of FIG. 7 (Example 2) and FIG. 9 (Modification 2-2). Details are omitted.

以上で説明した実施例、変形例及び参考例において、共通する機能を有する部分には同一の符号を付して説明を省略したものがある。なお、これらの実施例及び変形例は適宜組み合わせて実施することができる。また、メイン表示部１０は７セグメント方式でなくてもよい。さらに、導光板用発光素子２１は対（ペア）でなくても実施でき、１個でもよい。 In the above-described embodiments, modifications, and reference examples, parts having common functions are denoted by the same reference numerals and description thereof is omitted. In addition, these Examples and modifications can be implemented in combination as appropriate. Further, the main display unit 10 may not be a 7-segment system. Furthermore, the light-emitting element 21 for the light guide plate may be implemented without being a pair, and may be one.

本発明に係る遊技機用表示装置の一実施例の正面図及び背面図。The front view and back view of one Example of the display apparatus for game machines which concern on this invention. 図１（ａ）のＡ−Ａ断面図。AA sectional drawing of Fig.1 (a). 要部の斜視図。The perspective view of the principal part. 図３の長手方向側面図。FIG. 4 is a longitudinal side view of FIG. 3. 変形例を示す要部の斜視図及び長手方向側面図。The perspective view and longitudinal direction side view of the principal part which show a modification. 他の実施例を示す要部の斜視図。The perspective view of the principal part which shows another Example. 図６の長手方向側面図。FIG. 7 is a longitudinal side view of FIG. 6. 変形例を示す要部の斜視図及び長手方向側面図。The perspective view and longitudinal direction side view of the principal part which show a modification. 他の変形例を示す要部の斜視図及び長手方向側面図。The perspective view and longitudinal direction side view of the principal part which show another modification. さらに他の変形例を示す要部の斜視図及び長手方向側面図。The perspective view and longitudinal direction side view of the principal part which show another modification. 参考例を示す要部の斜視図及び長手方向側面図。The perspective view and longitudinal direction side view of the principal part which show a reference example. 従来例を示す要部の斜視図。The perspective view of the principal part which shows a prior art example. 図１２の長手方向側面図。The longitudinal direction side view of FIG.

Explanation of symbols

１表示装置（遊技機用表示装置）
４発光基板（共通基板）
１０セグメント表示部（メイン表示部）
１０Ａ〜１０Ｃ表示領域
１１図柄発光素子群
ＬＥＤ１３〜３３セグメントＬＥＤ（図柄発光素子）
２０面発光部
２１導光板用発光素子対
ＬＥＤ１〜１２導光板ＬＥＤ（導光板用発光素子）
２２導光板
２２ａ本体部
２２ｂ延長部
２２ｂ１非対向部位
２２ｂ２対向部位
２２ｃ湾曲部
２３反射層（損失軽減手段）
２４Ａ第一ローレット部（凹凸部；損失軽減手段）
２４Ｂ第二ローレット部（起伏部）
２５アーク部（曲面状凹部） 1 display device (display device for gaming machines)
4 Light emitting substrate (common substrate)
10 segment display (main display)
10A-10C Display area 11 Pattern light emitting element group LED13-33 Segment LED (design light emitting element)
20 surface light emission part 21 light emitting element pair for light guide plates LED1-12 light guide plate LED (light emitting element for light guide plates)
22 light guide plate 22a body part 22b extension part 22b1 non-opposing part 22b2 opposing part 22c curved part 23 reflective layer (loss reduction means)
24A First knurled portion (uneven portion; loss reduction means)
24B Second knurled part (undulation)
25 Arc part (curved concave part)

Claims

A display device for a gaming machine attached to a gaming machine,
A group of symbol light-emitting elements for displaying a symbol consisting of numbers, letters, etc. in the display area by one or more individual symbol light-emitting elements provided for each segment and notifying the player in a predetermined arrangement direction A segment display section as a main display section arranged with a plurality of intervals ,
A main body that covers the plurality of symbol light emitting element groups of the segment display portion in a planar shape from the player side that is the display surface side, and the plurality of symbol light emitting element groups along the arrangement direction from the main body part through the curved portion A translucent light guide plate including an extension portion extending so as to surround both sides of the light guide plate, and an arrangement thereof for each of the symbol light emitting element groups in order to emit light from the end face side of the extension portion to cause surface light emission. A surface light emitting unit having a pair of light emitting elements for a light guide plate arranged in pairs to sandwich from both sides along the direction ;
A plurality of symbol light emitting element groups and a plurality of light guide plate light emitting element pairs located on both sides thereof, and a single light emitting substrate mounted on the display surface side along the arrangement direction ;
Light that has entered the light guide plate extension from the light guide plate light-emitting element on the light guide plate side end face of the light guide plate extension does not travel from the curved portion to the main body, but reverses the extension. loss reducing means for reducing the light loss caused by it is arranged,
The loss reducing means is a portion of the extension portion of the light guide plate on the light guide plate light emitting element side end surface that is not opposed to the light guide plate light emitting element, and is adjacent to the pattern light emitting element group in the arrangement direction. A display device for a gaming machine, characterized in that the light that is formed corresponding to the interval located between them and travels backward through the extension is reflected and diffused by the loss reducing means and re-introduced into the extension .

The loss mitigation means for mitigating the amount of light loss caused by light entering the extension of the light guide plate from the light guide plate for the light emitting element to reverse the extension thereof without proceeding to the main part from the curved portion The display device for a gaming machine according to claim 1, wherein light that is formed as a reflective layer and travels backward through the extension is reflected and diffused by the reflection layer and re-introduced into the extension.

The loss mitigation means for mitigating the amount of light loss caused by light entering the extension of the light guide plate from the light guide plate for the light emitting element to reverse the extension thereof without proceeding to the main part from the curved portion The display device for a gaming machine according to claim 1 or 2, wherein the light that is formed as a concavo-convex portion and travels backward through the extension portion is reflected and diffused by the concavo-convex portion and is reintroduced into the extension portion.

On the end face of the light guide plate light emitting element side of the extension portion of the light guide plate, the directivity of light entering the extension portion of the light guide plate from the light guide plate light emitting element is widened in a portion facing the light guide plate light emitting element. The display device for gaming machines according to any one of claims 1 to 3, wherein a undulation portion is formed to make the undulation.

In the light guide plate for the light-emitting element side end face of the extension portion of the light guide plate, the portion facing the light guide plate for light-wide directivity of light entering from said light guide plate for the light-emitting element in the extension of the light guide plate The display device for gaming machines according to any one of claims 1 to 4, wherein a curved concave portion is formed to make it.