JP2010027534A - Light guide sheet and movable contact using the same - Google Patents

Light guide sheet and movable contact using the same Download PDF

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Publication number
JP2010027534A
JP2010027534A JP2008190563A JP2008190563A JP2010027534A JP 2010027534 A JP2010027534 A JP 2010027534A JP 2008190563 A JP2008190563 A JP 2008190563A JP 2008190563 A JP2008190563 A JP 2008190563A JP 2010027534 A JP2010027534 A JP 2010027534A
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Prior art keywords
light
light emitting
movable contact
guide sheet
light guide
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JP2008190563A
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Japanese (ja)
Inventor
Naoki Tachihata
直樹 立畠
Nobutoshi Takahashi
宣寿 高橋
Masahiro Ito
政弘 伊東
Makoto Sadakane
誠 定兼
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Panasonic Corp
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Panasonic Corp
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Priority to JP2008190563A priority Critical patent/JP2010027534A/en
Priority to US12/506,585 priority patent/US8388157B2/en
Priority to CN2009101511338A priority patent/CN101634430B/en
Publication of JP2010027534A publication Critical patent/JP2010027534A/en
Pending legal-status Critical Current

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  • Switch Cases, Indication, And Locking (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light guide sheet used for operation of various electronic devices, which is easy to manufacture and can suitably illuminate, and a movable contact using the light guide sheet. <P>SOLUTION: When pasting the light guide sheet 25 on the movable contact 27 by forming a plurality of frame sections 24A, 24b for connecting between the inside and the outside on approximately beltlike notch sections 23A, 23B formed on the periphery of a plurality of light-emitting sections 22A, 22B, manufacturing of the light guide sheet can be easily carried out since turning and bending in the periphery of the light-emitting sections 22A, 22B are not generated, the light guide sheet can attain suitable illumination having no light-emitting variations, and the movable contact using the light guide sheet can be also attained. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、主に各種電子機器の操作に使用される導光シート及びこれを用いた可動接点体に関するものである。   The present invention relates to a light guide sheet mainly used for operation of various electronic devices and a movable contact body using the same.

近年、各種電子機器、特に携帯電話等の携帯端末機器においては、周囲が暗い場合でも、押釦や表示シート等の識別や操作が容易に行えるように、発光ダイオードやＥＬ素子等を発光させて操作部の照光を行うものが増えており、これらの機器に用いられる可動接点体やスイッチにも、使い易く多様な照光を行えるものが求められている。   In recent years, various electronic devices, particularly mobile terminal devices such as mobile phones, are operated by emitting light emitting diodes or EL elements so that push buttons and display sheets can be easily identified and operated even when the surroundings are dark. There are an increasing number of parts that illuminate parts, and movable contact bodies and switches used in these devices are also required to be easy to use and capable of various kinds of illumination.

このような従来の導光シートや可動接点体について、図５〜図７を用いて説明する。   Such a conventional light guide sheet and movable contact body will be described with reference to FIGS.

なお、これらの図面は構成を判り易くするために、部分的に寸法を拡大して表している。   These drawings are partially enlarged in size for easy understanding of the configuration.

図５は従来のスイッチの断面図、図６は同平面図であり、同図において、１は光透過性でフィルム状の基材で、この基材１上面の所定箇所には、凹凸状の複数の発光部２が設けられている。   FIG. 5 is a cross-sectional view of a conventional switch, and FIG. 6 is a plan view thereof. In FIG. 5, reference numeral 1 denotes a light-transmitting film-like base material. A plurality of light emitting units 2 are provided.

そして、これらの発光部２には、例えば、発光部２Ａの周囲には略帯状で略コの字状の切欠部３Ａが、発光部２Ｂの周囲には略帯状で略Ｌ字状の切欠部３Ｂが、各々設けられて導光シート４が形成されている。   The light emitting units 2 include, for example, a substantially band-shaped and substantially U-shaped cutout portion around the light-emitting portion 2A, and a substantially band-shaped and substantially L-shaped cutout portion around the light-emitting portion 2B. 3B is provided, and the light guide sheet 4 is formed.

また、５は光透過性でフィルム状のベースシート、６は略ドーム状で導電金属薄板製の可動接点で、ベースシート５外周の所定箇所が、接着剤（図示せず）によって導光シート４下面に貼付されると共に、複数の可動接点６が発光部２Ａや２Ｂ等の下方のベースシート５下面に貼付されて、可動接点体７が構成されている。   Reference numeral 5 denotes a light-transmitting film-like base sheet, 6 denotes a substantially dome-shaped movable contact made of a conductive metal thin plate, and a predetermined portion of the outer periphery of the base sheet 5 is guided by an adhesive (not shown). While being affixed to the lower surface, a plurality of movable contacts 6 are affixed to the lower surface of the lower base sheet 5 such as the light emitting portions 2A and 2B to constitute a movable contact body 7.

さらに、８は上下面に複数の配線パターン（図示せず）が形成された配線基板で、上面には略円形状の中央固定接点９Ａと、これを囲む略馬蹄状または略リング状の外側固定接点９Ｂから形成された、複数の固定接点９が設けられている。   Further, reference numeral 8 denotes a wiring board having a plurality of wiring patterns (not shown) formed on the upper and lower surfaces, and a substantially circular central fixed contact 9A on the upper surface and a substantially horseshoe-shaped or substantially ring-shaped outer fixed surrounding it. A plurality of fixed contacts 9 formed from the contacts 9B are provided.

また、この配線基板８上面に可動接点体７が、各々の可動接点６の外周が外側固定接点９Ｂ上に載置され、可動接点６の下面中央が中央固定接点９Ａと所定の間隙を空けて、対向するように貼付されている。   Further, the movable contact body 7 is placed on the upper surface of the wiring board 8, the outer periphery of each movable contact 6 is placed on the outer fixed contact 9B, and the center of the lower surface of the movable contact 6 is spaced from the central fixed contact 9A by a predetermined gap. , Are affixed to face each other.

そして、１０は発光ダイオード等の発光素子で、図６に示すように、複数の発光素子１０Ａや１０Ｂが導光シート４側方の配線基板８上面に実装され、基材１の端面に発光面を向けて配置されている。   Reference numeral 10 denotes a light emitting element such as a light emitting diode. As shown in FIG. 6, a plurality of light emitting elements 10 </ b> A and 10 </ b> B are mounted on the upper surface of the wiring substrate 8 on the side of the light guide sheet 4. It is arranged facing.

さらに、１１は光透過性でフィルム状の表示シートで、下面に印刷等によって形成された遮光部１１Ａの所定箇所が、文字や記号等の形状にくり抜かれて複数の表示部１１Ｂが形成され、この表示部１１Ｂが導光シート４の発光部２Ａや２Ｂ等の上方に配置されて、スイッチが構成されている。   Furthermore, 11 is a light-transmitting film-like display sheet, and a predetermined portion of the light-shielding portion 11A formed by printing or the like on the lower surface is cut out into a shape such as a character or a symbol to form a plurality of display portions 11B. The display unit 11B is arranged above the light emitting units 2A, 2B and the like of the light guide sheet 4 to constitute a switch.

そして、このように構成されたスイッチが、電子機器の操作面に装着されると共に、複数の中央固定接点９Ａや外側固定接点９Ｂ、複数の発光素子１０が配線パターン等を介して、機器の電子回路（図示せず）に接続される。   The switch configured as described above is mounted on the operation surface of the electronic device, and the plurality of central fixed contacts 9A, the outer fixed contacts 9B, and the plurality of light emitting elements 10 are connected to the electronic device via the wiring pattern or the like. Connected to a circuit (not shown).

以上の構成において、表示シート１１の所定の表示部１１Ｂを下方へ押圧操作すると、導光シート４やベースシート５が撓んで可動接点６の略ドーム状の中央部が押圧され、所定の押圧力が加わると、可動接点６がクリック感を伴って下方へ弾性反転し、可動接点６の下面中央が中央固定接点９Ａに接触することによって、中央固定接点９Ａと外側固定接点９Ｂが、可動接点６を介して電気的に接続された状態となる。   In the above configuration, when the predetermined display portion 11B of the display sheet 11 is pressed downward, the light guide sheet 4 and the base sheet 5 are bent and the substantially dome-shaped central portion of the movable contact 6 is pressed, and a predetermined pressing force is applied. Is applied, the movable contact 6 elastically reverses downward with a click feeling, and the center of the lower surface of the movable contact 6 comes into contact with the central fixed contact 9A, so that the central fixed contact 9A and the outer fixed contact 9B become movable contacts 6 It will be in the state electrically connected via.

また、表示シート１１への押圧力を解除すると、弾性復帰力によって可動接点６が上方へ弾性反転し、可動接点６の下面中央が中央固定接点９Ａから離れて、中央固定接点９Ａと外側固定接点９Ｂが電気的に切断された状態となる。   Further, when the pressing force to the display sheet 11 is released, the movable contact 6 is elastically reversed upward by the elastic restoring force, the center of the lower surface of the movable contact 6 is separated from the central fixed contact 9A, and the central fixed contact 9A and the outer fixed contact are separated. 9B is in an electrically disconnected state.

そして、このような固定接点９の電気的接離に応じて、機器の各機能の切換えが行われると共に、機器の電子回路から発光素子１０に電源が供給されると、複数の発光素子１０Ａや１０Ｂが発光し、例えば、発光素子１０Ａの発光色が橙色、発光素子１０Ｂが緑色であった場合には、橙色の光が上端面、緑色の光が右端面から導光シート４内に入射して、基材１内を反射しながら内方へ進む。   Then, according to the electrical contact and separation of the fixed contact 9, each function of the device is switched, and when power is supplied from the electronic circuit of the device to the light emitting element 10, a plurality of light emitting elements 10 A and For example, when the light emitting element 10A emits orange light and the light emitting element 10B is green, orange light enters the light guide sheet 4 from the upper end surface and green light enters the light guide sheet 4 from the right end surface. Then, the light travels inward while reflecting in the substrate 1.

さらに、この光が基材１上面の複数の発光部２Ａや２Ｂ、２Ｃで拡散され反射して、表示シート１１の表示部１１Ｂを下方から照光し、複数の表示部１１Ｂが、例えば、発光部２Ａ上方の表示部１１Ｂは橙色に、発光部２Ｂや２Ｃ上方の表示部１１Ｂは緑色に照光されることによって、周囲が暗い場合でも、表示部１１Ｂの文字や記号等の表示が識別でき、操作を容易に行うことが可能なようになっている。   Further, this light is diffused and reflected by the plurality of light emitting units 2A, 2B, and 2C on the upper surface of the substrate 1, and illuminates the display unit 11B of the display sheet 11 from below, and the plurality of display units 11B are, for example, light emitting units. The display unit 11B above 2A is illuminated in orange, and the display unit 11B above the light emitting unit 2B and 2C is illuminated in green, so that even when the surroundings are dark, the display of characters, symbols, etc. on the display unit 11B can be identified. Can be easily performed.

つまり、表示シート１１を押圧操作することによって導光シート４上面を押圧し、可動接点６を弾性反転させて固定接点９の電気的接離を行うと共に、発光素子１０の光を端面から導光シート４内に導入し、複数の発光部２を発光させることによって、表示シート１１の複数の表示部１１Ｂを照光するように構成されている。   That is, by pressing the display sheet 11, the upper surface of the light guide sheet 4 is pressed, the movable contact 6 is elastically inverted to electrically connect and separate the fixed contact 9, and the light of the light emitting element 10 is guided from the end face. It is configured to illuminate the plurality of display portions 11B of the display sheet 11 by being introduced into the sheet 4 and causing the plurality of light emitting portions 2 to emit light.

また、この時、例えば、発光素子１０Ａと１０Ｂの発光色が異なり、上記のように発光部２Ａと２Ｂ、２Ｃが異なる色で発光している場合や、発光部２Ａの箇所は消灯し、他の発光部２Ｂや２Ｃは点灯している場合等に、複数の発光部２の周囲に形成された切欠部３Ａや３Ｂ等によって光が遮断され、発光色の異なる光が導光シート４内で混合され、混ざった発光色で照光されることや、消灯しているはずの箇所が他の箇所を照光している光によって、うっすらとではあるが照光されることのないようになっている。   At this time, for example, when the light emitting elements 10A and 10B have different emission colors, and the light emitting units 2A, 2B, and 2C emit light in different colors as described above, the light emitting unit 2A is turned off, and others When the light emitting portions 2B and 2C are lit, the light is blocked by the cutout portions 3A and 3B formed around the plurality of light emitting portions 2, and light having different emission colors is generated in the light guide sheet 4. The light is mixed but not illuminated by the light emitted by the mixed emission colors or the light that is illuminating the other part is supposed to be extinguished.

すなわち、複数の発光部２の周囲に複数の切欠部３Ａや３Ｂ等を設け、例えば、発光部２Ａから左右や下方へ漏出する橙色の光は、略コの字状の切欠部３Ａで、発光部２Ｂから左方や下方へ漏出する緑色の光は、略Ｌ字状の切欠部３Ｂで各々遮断することによって、混ざった発光色での照光や、消灯している箇所の照光が行われることのないように構成されているものであった。   That is, a plurality of notches 3A, 3B, etc. are provided around the plurality of light emitting portions 2, and for example, orange light leaking from the light emitting portion 2A to the left, right, or downward is emitted from the substantially U-shaped notches 3A. The green light leaking from the portion 2B to the left or below is blocked by the substantially L-shaped cutout portions 3B, so that illumination with mixed emission colors or illumination of the portions that are extinguished is performed. It was configured so that there was no.

なお、この出願の発明に関連する先行技術文献情報としては、例えば、特許文献１が知られている。
特開２００７−８７７４９号公報 As prior art document information related to the invention of this application, for example, Patent Document 1 is known.
JP 2007-87749 A

しかしながら、上記従来の可動接点体７やスイッチにおいては、照光時の光の混合や漏れを防ぐために、発光部２Ａや２Ｂの周囲に、略コの字状の切欠部３Ａや略Ｌ字状の切欠部３Ｂが形成されているため、導光シート４を可動接点体７上面に貼付する際、図７の平面図に示すように、発光部２Ａや２Ｂの周囲の基材１が上方や下方へ捲れて貼付しづらくなると共に、この時に折曲等が発生すると、これによって照光時に発光ムラが生じ易くなってしまうという課題があった。   However, in the conventional movable contact body 7 and the switch, in order to prevent mixing and leakage of light at the time of illumination, a substantially U-shaped notch 3A or a substantially L-shaped shape is formed around the light emitting portions 2A and 2B. Since the cutout portion 3B is formed, when the light guide sheet 4 is stuck on the upper surface of the movable contact body 7, the base material 1 around the light emitting portions 2A and 2B is upward or downward as shown in the plan view of FIG. There is a problem that it becomes difficult to stick and stick, and if a bend or the like occurs at this time, uneven light emission is likely to occur during illumination.

本発明は、このような従来の課題を解決するものであり、製作が容易に行え、良好な照光が可能な導光シート及びこれを用いた可動接点体を提供することを目的とする。   An object of the present invention is to solve such a conventional problem, and an object thereof is to provide a light guide sheet that can be easily manufactured and capable of good illumination, and a movable contact body using the same.

上記目的を達成するために本発明は、以下の構成を有するものである。   In order to achieve the above object, the present invention has the following configuration.

本発明の請求項１に記載の発明は、複数の発光部の周囲に形成された略帯状の切欠部に、内方と外方を連結する複数の桟部を形成して導光シートを構成したものであり、複数の桟部によって発光部とその周囲が連結され、導光シートを可動接点体等に貼付する際、発光部周囲の捲れや折曲等が生じないため、製作が容易に行えると共に、発光ムラ等のない良好な照光が可能な導光シートを得ることができるという作用を有する。   According to the first aspect of the present invention, a light guide sheet is formed by forming a plurality of crosspieces connecting the inner side and the outer side in a substantially band-shaped cutout portion formed around a plurality of light emitting portions. The light emitting part and its surroundings are connected by a plurality of crosspieces, and when the light guide sheet is affixed to a movable contact body or the like, there is no twisting or bending around the light emitting part. In addition to being able to obtain a light guide sheet capable of good illumination without light emission unevenness and the like.

請求項２に記載の発明は、請求項１記載の導光シートの発光部下面に、略ドーム状で導電金属薄板製の可動接点を装着して可動接点体を構成したものであり、製作が容易で、良好な照光が可能な可動接点体を実現することができるという作用を有する。   The invention according to claim 2 comprises a movable contact body formed by mounting a substantially dome-shaped movable contact made of a conductive metal thin plate on the lower surface of the light-emitting portion of the light guide sheet according to claim 1, and is manufactured. It has an effect that it is possible to realize a movable contact body that is easy and can be well illuminated.

以上のように本発明によれば、製作が容易で、良好な照光が可能な導光シート及びこれを用いた可動接点体を実現することができるという有利な効果が得られる。   As described above, according to the present invention, it is possible to obtain an advantageous effect that it is possible to realize a light guide sheet that is easy to manufacture and capable of good illumination and a movable contact body using the light guide sheet.

以下、本発明の実施の形態について、図１〜図４を用いて説明する。   Hereinafter, embodiments of the present invention will be described with reference to FIGS.

なお、これらの図面は構成を判り易くするために、部分的に寸法を拡大して表している。   These drawings are partially enlarged in size for easy understanding of the configuration.

また、背景技術の項で説明した構成と同一構成の部分には同一符号を付して、詳細な説明を簡略化する。   Further, the same reference numerals are given to the same components as those described in the background art section, and the detailed description will be simplified.

（実施の形態）
図１は本発明の一実施の形態による可動接点体の断面図、図２は同平面図であり、同図において、２１はフィルム状でポリエチレンテレフタレートやポリカーボネート、ポリウレタン、シリコーン等の可撓性を有する光透過性の基材で、この基材２１上面の所定箇所には、印刷等によって半透明なポリエステルやエポキシ等の凹凸状の複数の発光部２２が設けられている。 (Embodiment)
FIG. 1 is a cross-sectional view of a movable contact body according to an embodiment of the present invention, FIG. 2 is a plan view of the movable contact body, in which 21 is a film and has flexibility such as polyethylene terephthalate, polycarbonate, polyurethane, and silicone. A plurality of light emitting portions 22 having a concavo-convex shape such as translucent polyester or epoxy are provided at predetermined positions on the upper surface of the base material 21 by printing or the like.

そして、これらの発光部２２には、例えば、発光部２２Ａの周囲には略帯状で略コの字状の切欠部２３Ａが、発光部２２Ｂの周囲には略帯状で略Ｌ字状の切欠部２３Ｂが各々設けられると共に、これらの切欠部２３Ａや２３Ｂには、基材２１の内方と外方を連結する複数の桟部２４Ａや２４Ｂが所定の間隔で形成されて、導光シート２５が構成されている。   The light emitting portions 22 include, for example, a substantially band-shaped and substantially U-shaped cutout portion 23A around the light-emitting portion 22A, and a substantially band-shaped and substantially L-shaped cutout portion around the light-emitting portion 22B. Each of the cutouts 23A and 23B is formed with a plurality of crosspieces 24A and 24B that connect the inner side and the outer side of the base material 21 at predetermined intervals. It is configured.

また、５は光透過性でフィルム状のベースシート、６は略ドーム状で銅合金や鋼等の導電金属薄板製の可動接点で、ベースシート５外周の所定箇所が、接着剤（図示せず）によって導光シート２５下面に貼付されると共に、複数の可動接点６が発光部２２Ａや２２Ｂ等の下方の、ベースシート５下面に貼付されている。   Reference numeral 5 denotes a light-transmitting film-like base sheet, 6 is a substantially dome-like movable contact made of a conductive metal thin plate such as copper alloy or steel, and a predetermined portion on the outer periphery of the base sheet 5 is adhesive (not shown) ), And a plurality of movable contacts 6 are attached to the lower surface of the base sheet 5 below the light emitting portions 22A and 22B.

さらに、２６はポリエチレンテレフタレート等のフィルム状のセパレータで、このセパレータ２６がベースシート５下面全面を覆うように貼付され、保管時や搬送時に可動接点６下面に塵埃等が付着しないようにして、可動接点体２７が構成されている。   Furthermore, 26 is a film-like separator such as polyethylene terephthalate, which is affixed so as to cover the entire lower surface of the base sheet 5, and is movable so that dust or the like does not adhere to the lower surface of the movable contact 6 during storage or transportation. A contact body 27 is configured.

なお、このように導光シート２５を可動接点体２７に貼付する際、導光シート２５の発光部２２Ａの周囲には略帯状で略コの字状の切欠部２３Ａが、発光部２２Ｂの周囲には略帯状で略Ｌ字状の切欠部２３Ｂが各々形成されているが、これらは複数の桟部２４Ａや２４Ｂによって内方と外方が連結されているため、発光部２２Ａや２２Ｂの周囲の基材２１が上方や下方へ捲れないようになっている。   When the light guide sheet 25 is attached to the movable contact body 27 in this way, a substantially strip-like and substantially U-shaped cutout portion 23A is provided around the light emitting portion 22B around the light emitting portion 22A. Are formed in a substantially belt-like and substantially L-shaped cutout portion 23B, which are connected to the inside and the outside by a plurality of crosspieces 24A and 24B. The base material 21 is prevented from rolling upward or downward.

つまり、複数の発光部２２Ａや２２Ｂの周囲に形成された略帯状の切欠部２３Ａや２３Ｂに、内方と外方を連結する複数の桟部２４Ａや２４Ｂを所定の間隔で設けることによって、導光シート２５を可動接点体２７に貼付する際、発光部２２Ａや２２Ｂ周囲の基材２１の捲れや折曲等が生じず、製作が容易に行えると共に、折曲等により発光部２２Ａや２２Ｂに折り目等がつかないように構成されている。   In other words, a plurality of crosspieces 24A and 24B that connect the inside and the outside are provided at predetermined intervals in a substantially strip-shaped cutout 23A and 23B formed around the plurality of light emitting portions 22A and 22B. When the optical sheet 25 is affixed to the movable contact body 27, the base material 21 around the light emitting portions 22A and 22B does not bend or bend, and can be easily manufactured, and the light emitting portions 22A and 22B can be easily bent. It is configured not to crease or the like.

また、図３はこのような可動接点体２７を用いたスイッチの断面図であり、同図において、８はポリエチレンテレフタレートやポリカーボネート等のフィルム状、または紙フェノールやガラス入りエポキシ等の板状の配線基板で、上下面に銅等によって複数の配線パターン（図示せず）が形成されると共に、上面には銅やカーボン等によって、略円形状の中央固定接点９Ａと、これを囲む略馬蹄状または略リング状の外側固定接点９Ｂから形成された、複数の固定接点９が設けられている。   FIG. 3 is a cross-sectional view of a switch using such a movable contact body 27. In FIG. 3, reference numeral 8 denotes a film wiring such as polyethylene terephthalate or polycarbonate, or a plate wiring such as paper phenol or glass-filled epoxy. A plurality of wiring patterns (not shown) are formed on the upper and lower surfaces of the substrate with copper or the like, and a substantially circular central fixed contact 9A and an approximately horseshoe shape surrounding the center fixed contact 9A with copper or carbon on the upper surface. A plurality of fixed contacts 9 formed from a substantially ring-shaped outer fixed contact 9B are provided.

そして、この配線基板８上面にセパレータ２６を剥離した可動接点体２７が、各々の可動接点６の外周が外側固定接点９Ｂ上に載置され、可動接点６の下面中央が中央固定接点９Ａと所定の間隙を空けて、対向するように貼付されている。   Then, the movable contact body 27 having the separator 26 peeled off from the upper surface of the wiring board 8 is placed on the outer fixed contact 9B on the outer periphery of each movable contact 6, and the center of the lower surface of the movable contact 6 is predetermined with the central fixed contact 9A. Affixed so as to face each other with a gap in between.

また、１０は発光ダイオード等の発光素子で、複数の発光素子１０が導光シート２５側方の配線基板８上面に実装され、例えば図２に示すように、発光素子１０Ａが発光部２２Ａの上側方、発光素子１０Ｂが発光部２２Ｂや２２Ｃの右側方に、基材２１の端面に発光面を向けて配置されている。   Reference numeral 10 denotes a light emitting element such as a light emitting diode. A plurality of light emitting elements 10 are mounted on the upper surface of the wiring board 8 on the side of the light guide sheet 25. For example, as shown in FIG. On the other hand, the light emitting element 10 </ b> B is arranged on the right side of the light emitting portions 22 </ b> B and 22 </ b> C with the light emitting surface facing the end surface of the base material 21.

さらに、１１は光透過性でフィルム状の表示シートで、下面に印刷等によって形成された遮光部１１Ａの所定箇所が、文字や記号等の形状にくり抜かれて複数の表示部１１Ｂが形成され、この表示部１１Ｂが導光シート２５の発光部２２Ａや２２Ｂ等の上方に配置されて、スイッチが構成されている。   Furthermore, 11 is a light-transmitting film-like display sheet, and a predetermined portion of the light-shielding portion 11A formed by printing or the like on the lower surface is cut out into a shape such as a character or a symbol to form a plurality of display portions 11B. The display unit 11B is arranged above the light emitting units 22A and 22B of the light guide sheet 25 to configure a switch.

そして、このように構成されたスイッチが、電子機器の操作面に装着されると共に、複数の中央固定接点９Ａや外側固定接点９Ｂ、複数の発光素子１０が配線パターン等を介して、機器の電子回路（図示せず）に接続される。   The switch configured as described above is mounted on the operation surface of the electronic device, and the plurality of central fixed contacts 9A, the outer fixed contacts 9B, and the plurality of light emitting elements 10 are connected to the electronic device via the wiring pattern or the like. Connected to a circuit (not shown).

以上の構成において、表示シート１１の所定の表示部１１Ｂを下方へ押圧操作すると、導光シート２５やベースシート５が撓んで可動接点６の略ドーム状の中央部が押圧され、所定の押圧力が加わると、可動接点６がクリック感を伴って下方へ弾性反転し、可動接点６の下面中央が中央固定接点９Ａに接触することによって、中央固定接点９Ａと外側固定接点９Ｂが、可動接点６を介して電気的に接続された状態となる。   In the above configuration, when the predetermined display portion 11B of the display sheet 11 is pressed downward, the light guide sheet 25 and the base sheet 5 are bent and the substantially dome-shaped central portion of the movable contact 6 is pressed. Is applied, the movable contact 6 elastically reverses downward with a click feeling, and the center of the lower surface of the movable contact 6 comes into contact with the central fixed contact 9A, so that the central fixed contact 9A and the outer fixed contact 9B become movable contacts 6 It will be in the state electrically connected via.

また、表示シート１１への押圧力を解除すると、弾性復帰力によって可動接点６が上方へ弾性反転し、可動接点６の下面中央が中央固定接点９Ａから離れて、中央固定接点９Ａと外側固定接点９Ｂが電気的に切断された状態となる。   Further, when the pressing force to the display sheet 11 is released, the movable contact 6 is elastically reversed upward by the elastic restoring force, the center of the lower surface of the movable contact 6 is separated from the central fixed contact 9A, and the central fixed contact 9A and the outer fixed contact are separated. 9B is in an electrically disconnected state.

そして、このような固定接点９の電気的接離に応じて、機器の各機能の切換えが行われると共に、機器の電子回路から発光素子１０に電源が供給されると、複数の発光素子１０Ａや１０Ｂが発光し、例えば、発光素子１０Ａの発光色が橙色、発光素子１０Ｂが緑色であった場合には、橙色の光が上端面、緑色の光が右端面から導光シート２５内に入射して、基材２１内を反射しながら内方へ進む。   Then, according to the electrical contact and separation of the fixed contact 9, each function of the device is switched, and when power is supplied from the electronic circuit of the device to the light emitting element 10, a plurality of light emitting elements 10 A and 10B emits light. For example, when the light emitting element 10A emits orange light and the light emitting element 10B is green, orange light enters the light guide sheet 25 from the upper end surface and green light enters the light guide sheet 25 from the right end surface. Then, it proceeds inward while reflecting inside the base material 21.

さらに、この光が基材２１上面の複数の発光部２２Ａや２２Ｂ、２２Ｃで拡散され反射して、表示シート１１の表示部１１Ｂを下方から照光し、複数の表示部１１Ｂが、例えば、発光部２２Ａ上方の表示部１１Ｂは橙色に、発光部２２Ｂや２２Ｃ上方の表示部１１Ｂは緑色に照光されることによって、周囲が暗い場合でも、表示部１１Ｂの文字や記号等の表示が識別でき、操作を容易に行うことが可能なようになっている。   Further, the light is diffused and reflected by the plurality of light emitting units 22A, 22B, and 22C on the upper surface of the base material 21 to illuminate the display unit 11B of the display sheet 11 from below, and the plurality of display units 11B are, for example, light emitting units. The display unit 11B above 22A is illuminated in orange, and the display unit 11B above the light emitting units 22B and 22C is illuminated in green, so that even when the surroundings are dark, the display of characters, symbols, etc. on the display unit 11B can be identified. Can be easily performed.

つまり、表示シート１１を押圧操作することによって導光シート２５上面を押圧し、可動接点６を弾性反転させて固定接点９の電気的接離を行うと共に、発光素子１０の光を端面から導光シート２５内に導入し、複数の発光部２２を発光させることによって、表示シート１１の複数の表示部１１Ｂを照光するように構成されている。   That is, by pressing the display sheet 11, the upper surface of the light guide sheet 25 is pressed, the movable contact 6 is elastically inverted to electrically connect and separate the fixed contact 9, and the light from the light emitting element 10 is guided from the end face. The plurality of display units 11B of the display sheet 11 are illuminated by being introduced into the sheet 25 and causing the plurality of light emitting units 22 to emit light.

また、この時、例えば、発光素子１０Ａと１０Ｂの発光色が異なり、上記のように発光部２２Ａや２２Ｂ、２２Ｃが異なる色で発光している場合や、発光部２２Ａの箇所は消灯し、他の発光部２２Ｂや２２Ｃは点灯している場合等に、複数の発光部２２の周囲に形成された切欠部２３Ａや２３Ｂ等によって光が遮断され、発光色の異なる光が導光シート２５内で混合され、混ざった発光色で照光されることや、消灯しているはずの箇所が他の箇所を照光している光によって、うっすらとではあるが照光されることのないようになっている。   At this time, for example, when the light emitting elements 10A and 10B have different emission colors and the light emitting units 22A, 22B, and 22C emit light in different colors as described above, the light emitting unit 22A is turned off, and others When the light emitting portions 22B and 22C are lit, the light is blocked by the cutout portions 23A and 23B formed around the plurality of light emitting portions 22, and light having different emission colors is generated in the light guide sheet 25. The light is mixed but not illuminated by the light emitted by the mixed emission colors or the light that is illuminating the other part is supposed to be extinguished.

すなわち、複数の発光部２２の周囲に複数の切欠部２３Ａや２３Ｂ等を設け、例えば、発光部２２Ａから左右や下方へ漏出する橙色の光は、略コの字状の切欠部２３Ａで、発光部２２Ｂから左方や下方へ漏出する緑色の光は、略Ｌ字状の切欠部２３Ｂで各々遮断することによって、混ざった発光色での照光や、消灯している箇所の照光が行われることのないように構成されている。   That is, a plurality of notches 23A, 23B, etc. are provided around the plurality of light emitting sections 22, and for example, orange light leaking from the light emitting section 22A to the left and right or below is emitted by the substantially U-shaped notches 23A. The green light leaking from the portion 22B to the left or below is blocked by the substantially L-shaped cutout portion 23B, so that illumination with a mixed emission color or illumination of an unlit area is performed. It is configured so that there is no.

さらに、これら切欠部２３Ａや２３Ｂには、内方と外方を連結する複数の桟部２４Ａや２４Ｂが所定の間隔で設けられ、上述したように、導光シート２５を可動接点体２７に貼付する際、発光部２２Ａや２２Ｂ周囲の基材２１の捲れや折曲等によって、発光部２２Ａや２２Ｂに折り目等が生じないようになっているため、発光ムラ等のない良好な照光が行えるようになっている。   Further, the cutouts 23A and 23B are provided with a plurality of crosspieces 24A and 24B that connect the inside and the outside at a predetermined interval. As described above, the light guide sheet 25 is attached to the movable contact body 27. In this case, the light emitting portions 22A and 22B are prevented from being folded by bending or bending of the base material 21 around the light emitting portions 22A and 22B, so that good illumination without unevenness in light emission can be performed. It has become.

なお、以上の説明のように、切欠部２３Ａや２３Ｂに二つの桟部２４Ａや２４Ｂではなく、一つの桟部２４Ａや２４Ｂを設けた構成としても、導光シート２５の貼付時に、発光部２２Ａや２２Ｂ周囲の基材２１全体の大きな捲れを防ぐことは可能であるが、上記のように複数の桟部２４Ａや２４Ｂを所定の間隔で設けることによって、より確実に発光部２２Ａや２２Ｂ周囲の捲れや折曲等を防ぎ、発光ムラ等のない良好な照光を行うことができる。   As described above, the light emitting portion 22A may be provided when the light guide sheet 25 is pasted, even if the notches 23A and 23B are provided with one crosspiece 24A and 24B instead of the two crosspieces 24A and 24B. It is possible to prevent the entire base material 21 around 22B from being greatly swollen, but by providing a plurality of crosspieces 24A and 24B at predetermined intervals as described above, the surroundings of the light emitting parts 22A and 22B can be more reliably provided. It is possible to prevent blurring and bending, and to perform good illumination without uneven light emission.

さらに、図４の平面図に示すように、切欠部２３Ａや２３Ｂにより多くの、例えば、六つの桟部２４Ａや四つの桟部２４Ｂを設けることで、発光部２２Ａや２２Ｂ周囲の捲れや折曲等が殆んどない状態で、導光シート２５を可動接点体２７に貼付することが可能となる。   Further, as shown in the plan view of FIG. 4, by providing more, for example, six crosspieces 24A and four crosspieces 24B in the cutouts 23A and 23B, the light emitting portions 22A and 22B are bent or bent around the light emitting portions 22A and 22B. The light guide sheet 25 can be affixed to the movable contact body 27 in a state where there is little or the like.

また、これらの桟部２４Ａや２４Ｂは、幅寸法が０．１〜１ｍｍ前後の切欠部２３Ａや２３Ｂに対し、通常１〜５ｍｍ前後の細い幅寸法に形成されているため、桟部２４Ａや２４Ｂからの光の漏出は殆んどないが、発光素子１０を増やしより明るく照光する場合等には、図４に示すように、複数の桟部２４Ａや２４Ｂの外方または内方に複数の切欠部２３Ｃを形成し、これらによって漏出した光を遮断することで、光の漏出をほぼ完全に防ぐことができる。   In addition, since these crosspieces 24A and 24B are formed to have a narrow width dimension of usually about 1 to 5 mm with respect to the notches 23A and 23B having a width dimension of about 0.1 to 1 mm, the crosspieces 24A and 24B. However, in the case where the light emitting element 10 is increased and light is illuminated more brightly, as shown in FIG. 4, a plurality of notches are formed outside or inward of the plurality of crosspieces 24A and 24B. By forming the portion 23C and blocking the light leaked by these, the light leakage can be prevented almost completely.

このように本実施の形態によれば、複数の発光部２２Ａや２２Ｂの周囲に形成された略帯状の切欠部２３Ａや２３Ｂに、内方と外方を連結する複数の桟部２４Ａや２４Ｂを形成することによって、導光シート２５を可動接点体２７に貼付する際、発光部２２Ａや２２Ｂ周囲の捲れや折曲等が生じないため、製作が容易に行えると共に、発光ムラ等のない良好な照光が可能な導光シート及びこれを用いた可動接点体を得ることができるものである。   As described above, according to the present embodiment, the plurality of crosspieces 24A and 24B that connect the inner side and the outer side are formed in the substantially strip-shaped cutouts 23A and 23B formed around the light emitting units 22A and 22B. By forming, when the light guide sheet 25 is stuck to the movable contact body 27, the light emitting portions 22A and 22B are not bent or bent around the light emitting portions 22A and 22B. A light guide sheet capable of illumination and a movable contact body using the same can be obtained.

なお、以上の説明では、可動接点６上方の導光シート２５の基材２１上面に、印刷によって複数の発光部２２を形成した構成について説明したが、上面ではなく基材２１下面に発光部２２を形成した構成としても本発明の実施は可能であり、また、印刷以外にも貼付やプレス加工、成形加工等、様々な方法によって凹凸状の発光部２２の形成は可能である。   In the above description, the configuration in which the plurality of light emitting units 22 are formed by printing on the upper surface of the base material 21 of the light guide sheet 25 above the movable contact 6 has been described. It is possible to implement the present invention even with a configuration in which the uneven light emitting portion 22 is formed by various methods other than printing, such as sticking, pressing, and molding.

さらに、以上の説明では、下面に複数の可動接点６が貼付されたベースシート５を、導光シート２５の下面に貼付した構成について説明したが、ベースシート５をなくし、導光シート２５の下面に複数の可動接点６を直接貼付した構成とすれば、全体の構成部品数を減らし、可動接点体をより簡易で安価なものとすることができる。   Furthermore, in the above description, the configuration in which the base sheet 5 with the plurality of movable contacts 6 attached to the lower surface is attached to the lower surface of the light guide sheet 25 has been described. However, the base sheet 5 is eliminated and the lower surface of the light guide sheet 25 is removed. If a plurality of movable contacts 6 are directly pasted, the total number of components can be reduced, and the movable contact body can be made simpler and less expensive.

本発明による導光シート及びこれを用いた可動接点体は、製作が容易で、良好な照光が可能なものが得られ、主に各種電子機器の操作用として有用である。   The light guide sheet according to the present invention and the movable contact body using the light guide sheet can be easily manufactured and can be well illuminated, and are mainly useful for operation of various electronic devices.

本発明の一実施の形態による可動接点体の断面図Sectional drawing of the movable contact body by one embodiment of this invention 同平面図Plan view 同スイッチの断面図Cross section of the switch 同他の実施の形態による平面図Plan view according to another embodiment 従来のスイッチの断面図Cross section of conventional switch 同平面図Plan view 同平面図Plan view

符号の説明Explanation of symbols

５ ベースシート
６ 可動接点
８ 配線基板
９ 固定接点
９Ａ 中央固定接点
９Ｂ 外側固定接点
１０、１０Ａ、１０Ｂ 発光素子
１１ 表示シート
１１Ａ 遮光部
１１Ｂ 表示部
２１ 基材
２２、２２Ａ、２２Ｂ、２２Ｃ 発光部
２３Ａ、２３Ｂ、２３Ｃ 切欠部
２４Ａ、２４Ｂ 桟部
２５ 導光シート
２６ セパレータ
２７ 可動接点体 5 Base sheet 6 Movable contact 8 Wiring board 9 Fixed contact 9A Center fixed contact 9B Outer fixed contact 10, 10A, 10B Light emitting element 11 Display sheet 11A Light shielding portion 11B Display portion 21 Base material 22, 22A, 22B, 22C Light emitting portion 23A, 23B, 23C Notch 24A, 24B Crosspiece 25 Light guide sheet 26 Separator 27 Movable contact body

Claims (2)

フィルム状の基材と、この基材に形成された凹凸状の複数の発光部と、上記発光部の周囲に形成された略帯状の複数の切欠部からなり、上記切欠部に内方と外方を連結する複数の桟部を形成した導光シート。 It consists of a film-like base material, a plurality of uneven light emitting portions formed on the base material, and a plurality of substantially strip-shaped notch portions formed around the light emitting portion. A light guide sheet in which a plurality of crosspieces connecting the sides are formed. 請求項１記載の導光シートの発光部下面に、略ドーム状で導電金属薄板製の可動接点を装着した可動接点体。 A movable contact body having a substantially dome-shaped movable contact made of a conductive metal thin plate attached to the lower surface of the light emitting portion of the light guide sheet according to claim 1.
JP2008190563A 2008-07-24 2008-07-24 Light guide sheet and movable contact using the same Pending JP2010027534A (en)

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JP2008190563A JP2010027534A (en) 2008-07-24 2008-07-24 Light guide sheet and movable contact using the same
US12/506,585 US8388157B2 (en) 2008-07-24 2009-07-21 Light guide sheet and movable contact assembly including the same
CN2009101511338A CN101634430B (en) 2008-07-24 2009-07-23 Light guide sheet and movable contact assembly including the same

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012053187A1 (en) * 2010-10-22 2012-04-26 パナソニック株式会社 Key sheet and movable-contacts body using same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
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JP2001014974A (en) * 1999-06-29 2001-01-19 Alps Electric Co Ltd Sheet with movable contact, and sheet switch
JP4317721B2 (en) * 2003-08-25 2009-08-19 アルプス電気株式会社 Movable contact body and push button switch using the same
JP2006294429A (en) * 2005-04-12 2006-10-26 Matsushita Electric Ind Co Ltd Moving contact body and panel switch composed by using it
JP5023971B2 (en) * 2007-06-20 2012-09-12 パナソニック株式会社 Movable contact with light guiding function and input device using the same
JP2009170195A (en) * 2008-01-15 2009-07-30 Panasonic Corp Movable contact point body and switch using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012053187A1 (en) * 2010-10-22 2012-04-26 パナソニック株式会社 Key sheet and movable-contacts body using same

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CN101634430A (en) 2010-01-27
CN101634430B (en) 2012-02-01

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