JP4061851B2 - Keyboard device - Google Patents

Keyboard device Download PDF

Info

Publication number
JP4061851B2
JP4061851B2 JP2001061465A JP2001061465A JP4061851B2 JP 4061851 B2 JP4061851 B2 JP 4061851B2 JP 2001061465 A JP2001061465 A JP 2001061465A JP 2001061465 A JP2001061465 A JP 2001061465A JP 4061851 B2 JP4061851 B2 JP 4061851B2
Authority
JP
Japan
Prior art keywords
key
light
light emitting
emitting diode
keyboard
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP2001061465A
Other languages
Japanese (ja)
Other versions
JP2002258863A (en
Inventor
弘和 谷口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Casio Computer Co Ltd
Original Assignee
Casio Computer Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Priority to JP2001061465A priority Critical patent/JP4061851B2/en
Publication of JP2002258863A publication Critical patent/JP2002258863A/en
Application granted granted Critical
Publication of JP4061851B2 publication Critical patent/JP4061851B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10HELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H1/00Details of electrophonic musical instruments
    • G10H1/32Constructional details
    • G10H1/34Switch arrangements, e.g. keyboards or mechanical switches specially adapted for electrophonic musical instruments
    • G10H1/344Structural association with individual keys
    • G10H1/346Keys with an arrangement for simulating the feeling of a piano key, e.g. using counterweights, springs, cams

Description

【0001】
【発明の属する技術分野】
この発明は、電子鍵盤楽器などの鍵盤装置に関する。
【0002】
【従来の技術】
電子ピアノなどの電子鍵盤楽器においては、鍵盤シャーシ上に複数の鍵を上下方向に回動自在に配置すると共に、この鍵盤シャーシに複数の発光体を各鍵の前部の下方にそれぞれ対応させて設け、これら発光体を予め記憶された演奏曲に応じて選択的に発光させることにより、各鍵の前部側を選択的に照明して光らせ、これにより押鍵すべき鍵を指示するナビゲート機能を備えたものがある。この場合、複数の鍵は、白鍵と黒鍵とからなり、そのいずれもが光透過性を有する合成樹脂からなり、各鍵の下方に配置された発光体により各鍵の前部側が下方から照明された際、その照明光が鍵を透過して上方に出射することにより、鍵そのものが光って見えるように構成されている。
【0003】
このような電子鍵盤楽器では、演奏者が鍵を押鍵するときに、各鍵に対応する発光体が単一で同色の発光素子であると、演奏者が右手で押鍵するのか、左手で押鍵するのかを判断することができないため、従来では、発光体を発光色の異なる2つの発光素子、例えば赤色光を発光する赤色発光ダイオードと黄色光を発光する黄色発光ダイオードとで構成し、これにより発光体の発光色で左右のいずれの手で押鍵するのかを視認できるようにしたものが開発されている。
【0004】
【発明が解決しようとする課題】
しかしながら、このような電子鍵盤楽器では、発光体が発光色の異なる2つの発光素子からなり、これら発光素子を各鍵の下方に配置する際、鍵の配列方向つまり鍵の左右方向、または鍵の配列方向と直交する方向つまり鍵の前後方向のいずれかに配列する必要があるため、2つの発光素子のうち、一方の発光素子の輝度が他方の発光素子の輝度よりも低いと、2つの発光素子を選択的に発光させて鍵を光らせた際に、演奏者の位置から見て鍵の左右方向または鍵の前後方向で鍵の明るさに差が生じるという問題がある。
【0005】
例えば、2つの発光素子が赤色発光ダイオードと黄色発光ダイオードとからなる場合には、黄色発光ダイオードの輝度が赤色発光ダイオードの輝度よりも低く、黄色発光ダイオードによる照明が暗く見える傾向にある。このような黄色発光ダイオードを鍵の下方における右側に配置し、赤色発光ダイオードを黄色発光ダイオードの左側に配置すると、複数配列された鍵のうち、演奏者の位置から見て右側に配列された鍵に対応する黄色発光ダイオードの光が演奏者と反対側に向けて鍵に照射されるため、演奏者の位置からは、右側半分に配列された鍵の黄色の明るさが、赤色の明るさよりも暗く見えるという問題があるばかりか、左側半分に配列された鍵の黄色の明るさよりも暗く見えるという問題もある。
【0006】
また、黄色発光ダイオードを鍵の下方における前側に配置し、赤色発光ダイオードを鍵の下方における黄色発光ダイオードの後側に配置し、これら各発光ダイオードで鍵の前部のほぼ同じ位置を照明した場合には、黄色発光ダイオードの輝度が赤色発光ダイオードの輝度よりも低い傾向にあるため、各鍵の黄色の明るさが赤色の明るさよりも暗く見えるという問題がある。
【0007】
この発明の課題は、複数の発光素子の発光色ごとに輝度に差があっても、演奏者から見て鍵がほぼ均一の明るさで光って見えるようにすることである。
【0008】
【課題を解決するための手段】
請求項1に記載の発明は、鍵盤シャーシ上に光透過性を有する複数の鍵がそれぞれ上下方向に回動可能に配列され、前記鍵盤シャーシに発光体が前記複数の鍵の下方にそれぞれ対応して設けられ、この状態で前記複数の発光体を選択的に発光させて前記鍵を下方から投光して光らせる鍵盤装置において、前記発光体は、夫々発光輝度及び発光方向の異なる 複数の発光素子からなり、鍵盤の中間部分の所定位置を境にして、これら発光素子のうち、輝度の低い発光素子の発光方向が前記鍵の配列方向の中間部の所定位置を向くように、前記発光体が前記複数の鍵盤の配列方向に配置されていることを特徴とする。
【0009】
請求項2に記載の発明は、鍵盤シャーシ上に光透過性を有する複数の鍵がそれぞれ上下方向に回動可能に配列され、前記鍵盤 シャーシに発光体が前記複数の鍵の下方にそれぞれ対応して設けられ、この状態で前記複数の発光体を選択的に発光させて前記鍵を下方から投光して光らせる鍵盤装置において、前記発光体は、夫々発光輝度及び発光方向との異なる複数の発光素子からなり、これら発光素子のうち、輝度の低い発光素子の発光方向が前記鍵の前側に向くように、前記複数の発光素子が前記鍵の前後方向に配置されていることを特徴とする。
【0010】
この場合、請求項3に記載のごとく、前記発光体は、前記複数の発光素子が共通の基板上に設けられていることにより、複数の発光素子をユニット化でき、これにより発光体をコンパクトに構成することができ、このため白鍵および黒鍵からなる複数の鍵のうち、特に発光体の設置スペースが狭い黒鍵に対しても、容易に設置することができる。
【0011】
【発明の実施の形態】
以下、図1〜図4を参照して、この発明の鍵盤装置を電子鍵盤楽器に適用した一実施形態について説明する。
図1は電子鍵盤楽器を示した要部の平面図、図2はそのA−A矢視における拡大断面図である。
この電子鍵盤楽器は、図1および図2に示すように、楽器ケース内に組み込まれる合成樹脂製の鍵盤シャーシ1と、この鍵盤シャーシ1上に上下方向に回動可能に配置された合成樹脂製の複数の鍵2と、これら鍵2の押鍵動作に伴ってそれぞれ上下方向に回動変位して各鍵2にアクション荷重を付与するハンマーアーム3と、各鍵2の押鍵動作に応じてそれぞれスイッチ動作してオン信号を出力するスイッチ部材4と、各鍵2をそれぞれ照明して光らせる発光体5とを備えている。
【0012】
複数の鍵2は、図1に示すように、白鍵2aと黒鍵2bとからなり、これらが鍵盤シャーシ1上に並列に配置されている。この場合、白鍵2aは、黒鍵2bの長さよりも長く、前端部の幅が黒鍵2bよりも広く、かつその高さが黒鍵2bの高さよりも低く形成されており、これ以外は黒鍵2bとほぼ同じ構造になっている。このため、以下の説明では黒鍵2bを鍵2として述べる。これら鍵2は、図2に示すように、それぞれ後端部(同図では右端部)が鍵盤シャーシ1の後端部(同図では右端部)上に設けられた鍵支持部6に軸7により回動自在に取り付けられ、この軸7を中心に上下方向に回動し、各鍵2のほぼ中間部に形成された中空状の押圧部8がスイッチ部材4を押圧するように構成されている。
【0013】
この場合、各鍵2は、後述するハンマーアーム3によって上方に付勢され、これにより通常は図2に示すように、各鍵2の前端部(同図では左端部)に垂設されたL字状のストッパ片9が鍵盤シャーシ1の前端部の下面に設けられたフェルトなどからなる鍵用の上限ストッパ10に当接することにより、所定の初期位置(上限位置)に位置規制されている。また、各鍵2は、押鍵時に軸7を中心に図2において反時計回りに回動して、L字状のストッパ片9が鍵盤シャーシ1の前端部の下部に設けられたフェルトなどからなる鍵用の下限ストッパ11に当接することにより、所定の下限位置に位置規制されている。なお、各鍵2は、鍵盤シャーシ1の前端部上に設けられた鍵ガイド12によってそれぞれ横振れしないようにガイドされている。
【0014】
ハンマーアーム3は、図2に示すように、合成樹脂製のアーム本体13と、このアーム本体13の後端部側に(同図では右下端部側)に取り付けられた錘14と、アーム本体13の前端部(同図では左上端部)に設けられたハンマー当接部15とを備えている。このハンマーアーム3は、アーム本体13の後端部側が錘14と共に鍵盤シャーシ1の開口部1aを通して鍵支持部6の下方に各鍵2と対応した状態で配置され、アーム本体13のほぼ中間部が鍵盤シャーシ1上に設けられたハンマー支持部16に軸17によって上下方向に回動自在に支持され、この状態でアーム本体13の前端部側のハンマー当接部15が鍵2の下面に当接して摺動するように構成されている。
【0015】
このハンマーアーム3は、図2に示すように、通常は錘14の重量によってアーム本体13が同図において時計回りに付勢され、アーム本体13の後端部の下面が鍵盤シャーシ1の後端部における側壁リブ18の下端部に設けられたフェルトなどからなる下限ストッパ19に当接して、所定の初期位置(下限位置)に位置規制され、これによりハンマー当接部15が鍵2を上方に押し上げている。また、このハンマーアーム3は、錘14の重量に抗して鍵2が押鍵されると、鍵2によりハンマー当接部15が押し下げられ、これによりアーム本体13が図2において時計回りに回動して鍵2にアクション荷重を付与し、アーム本体13の後端部の上面が鍵盤シャーシ1の後端部に設けられた上限ストッパ20に当接して所定の上限位置に位置規制されている。
【0016】
スイッチ部材4は、図2に示すように、ゴムシート21とスイッチ基板22とからなり、鍵盤シャーシ1のほぼ中間部分における下面に配置されている。ゴムシート21は、鍵2の配列方向に連続する帯状に形成され、各鍵2の押圧部8に対応する個所に弾性変形可能なドーム状の膨出部23が形成され、これら膨出部23が鍵盤シャーシ1の各貫通孔1b内に下側から挿入されて上方に突出している。スイッチ基板22は、ゴムシート21を介して鍵盤シャーシ1の下面に取り付けられている。これにより、スイッチ部材4は、押鍵動作に応じてゴムシート21の膨出部23が鍵2の押圧部8によって押圧されたときに、膨出部23が弾性変形してその内部に設けられた可動接点がスイッチ基板22に設けられた固定接点に接触し、これによりオン信号を出力するように構成されている。
【0017】
ところで、各鍵2は、光透過性を有する合成樹脂からなり、その前部下方に配置された発光体5により各鍵2の前部が下方から照明され、その照明光が鍵2を透過することにより、鍵2が光って見えるように構成されている。
発光体5は、発光色の異なる2つの発光素子、例えば図3に示すように、赤色光を発光する赤色発光ダイオード24と、黄色光を発光する黄色発光ダイオード25とを備え、各発光ダイオード24、25が共通のユニット基板26上に透明なカバー部材27で覆われて設けられ、このユニット基板26の下面に接続用の一対の脚部28が設けられた構造になっている。この発光体5は、図2および図4に示すように、一対の脚部28が各鍵2の前部下方に位置する鍵盤シャーシ1上の取付部材29に取り付けられ、これにより各鍵2の下方にそれぞれ対応して配置されている。
【0018】
また、この発光体5は、図3および図4に示すように、赤色発光ダイオード24と黄色発光ダイオード25とが鍵2の配列方向に沿って共通のユニット基板26上に配置され、これにより例えば赤色発光ダイオード24が演奏者の右手による押鍵操作を指示し、黄色発光ダイオード25が演奏者の左手による押鍵操作を指示するように構成されている。この場合、赤色発光ダイオード24と黄色発光ダイオード25とは、輝度が異なり、黄色発光ダイオード25の輝度が赤色発光ダイオード24の輝度よりも低くなる傾向にある。このため、輝度の低い黄色発光ダイオード25が鍵2の演奏者側を照明するように配置されている。
【0019】
すなわち、図1に示すように複数配列された各鍵2のうち、演奏者が位置する個所(つまり鍵盤のほぼ中間部分)を境にして、左側半分の低音域側の各鍵2に対応する黄色発光ダイオード25は、図4に示すように、鍵2の下方における左側に配置されて、鍵2の演奏者側である右側部分を照明する。また、この低音域側の赤色発光ダイオード24は、鍵2の下方における黄色発光ダイオード25の右側に配置されて、鍵2の演奏者と反対側の左側部分を照明する。
一方、演奏者が位置する個所を境にして、右側半分の高音域側の各鍵2に対応する黄色発光ダイオード25は、鍵2の下方における右側に配置されて、鍵2の演奏者側である左側部分を照明する。また、この高音域側の赤色発光ダイオード24は、鍵2の下方における黄色発光ダイオード25の左側に配置され、鍵2の演奏者と反対側の左側部分を照明する。
【0020】
このような電子鍵盤楽器では、発光体5の各発光ダイオード24、25のうち、例えば赤色発光ダイオード24が予め記憶された演奏曲に応じて選択されて点灯すると、赤色の光が鍵2の前部に下方から照射され、この照射された光が鍵2を透過することにより、鍵2の前部が赤く光る。また、黄色発光ダイオード25が予め記憶された演奏曲に応じて選択されて点灯すると、黄色の光が鍵2の前部に下方から照射され、この照射された光が鍵2を透過することにより、鍵2の前部が黄く光る。
【0021】
このときには、輝度の低い黄色発光ダイオード25が鍵2の配列方向における演奏者側、すなわち演奏者が位置する個所を境にして、左側半分の低音域側では各鍵2の演奏者側である右側部分を照明し、右側半分の高音域側では各鍵2の演奏者側である左側部分を照明するので、発光体5を選択的に発光させて鍵2を光らせる際、黄色発光ダイオード25によって照明された鍵2が演奏者の位置から見やすくなり、このため黄色発光ダイオード25の輝度が赤色発光ダイオード24の輝度よりも低くても、演奏者から見て鍵2がほぼ均一の明るさで光って見えるようにすることができると共に、左側半分の低音域側と右側半分の高音域側との黄色の明るさもほぼ均一な明るさになる。
【0022】
このように、この電子鍵盤楽器では、自動演奏や演奏練習などの際に、その演奏曲に応じて発光体5の赤色発光ダイオード24と黄色発光ダイオード25とを選択的に点灯させることにより、鍵2の前部を赤色および黄色のいずれかの光で照明してほぼ均一の明るさで光らせることができるので、押鍵すべき鍵2を容易に視認することができると共に、鍵2の光った色により左右いずれの手で押鍵すべきかをも視認することができる。これにより、自動演奏および演奏練習では、演奏曲に応じて押鍵すべき鍵2の前部が演奏者から見てほぼ均一の明るさで光ることにより、ナビゲータとして押鍵すべき鍵2を良好に指示することができる。
【0023】
また、この電子鍵盤楽器では、発光体5の赤色発光ダイオード24と黄色発光ダイオード25とを共通のユニット基板26上に設けたことにより、赤色発光ダイオード24と黄色発光ダイオード25とを備えた発光体5をユニット化することができ、これにより発光体5をコンパクトに構成することができ、このため白鍵2aおよび黒鍵2bからなる複数の鍵2のうち、特にハンマーアーム3などによって発光体5の設置スペースが狭い黒鍵2bに対しても、容易に設置することができる。
【0024】
なお、上記実施形態では、発光体5の赤色発光ダイオード24と黄色発光ダイオード25とを鍵2の配列方向に沿って配置したが、これに限らず、例えば図5に示す変形例のように、赤色発光ダイオード24と黄色発光ダイオード25とを鍵2の配列方向と直交する方向つまり鍵2の前後方向に沿って配置しても良い。この場合には、図5に示すように、輝度の高い赤色発光ダイオード24を鍵2の前側に配置し、この赤色発光ダイオード24の照射光を鍵2の後方に向けて照射させ、輝度の低い黄色発光ダイオード25を赤色発光ダイオード24の後側に配置し、この黄色発光ダイオード245の照射光を鍵2の前面の傾斜部分30に向けて照射させるように構成すれば良い。
【0025】
このような変形例の電子鍵盤楽器では、赤色発光ダイオード24と黄色発光ダイオード25とを選択的に発光させて鍵2を光らせる際、輝度の低い黄色発光ダイオード25の照射光が鍵2の前面の傾斜部分30に照射されるので、黄色発光ダイオード25によって照明された鍵2が赤色発光ダイオード24で照明された場合よりも演奏者の位置から見やすくなる。このため、黄色発光ダイオード25の輝度が赤色発光ダイオード24の輝度よりも低くても、演奏者から見て鍵2がほぼ均一の明るさで光って見えるようにすることができる。
【0026】
また、上記実施形態およびその変形例では、赤色発光ダイオード24と黄色発光ダイオード25とを共通のユニット基板26上に設けて、発光体5を一体化したが、これに限らず、赤色発光ダイオード24と黄色発光ダイオード25とをそれぞれ独立させて配置しても良い。また、発光色の異なる発光素子として、赤色発光ダイオード24と黄色発光ダイオード25とを用いた場合について述べたが、これに限らず、緑色光を発光する緑色発光ダイオードや青色光を発光する青色発光ダイオードなどの発光ダイオードを用いても良く、またこれらの発光ダイオードを適宜組み合わせて用いても良い。
【0027】
さらに、上記実施形態およびその変形例では、鍵盤シャーシ1にハンマーアーム3を各鍵2に対応させてそれぞれ回動自在に取り付け、これらハンマーアーム3で各鍵2にアクション荷重を付与する構造の鍵盤装置について述べたが、これに限らず、例えば鍵盤シャーシ1と各鍵2の間にそれぞれコイルばねなどのばね部材を設け、これらばね部材で各鍵2を上方に付勢する構造の鍵盤装置にも適用できるほか、各鍵2の後端部に上下方向に弾性変形する屈曲部を形成し、この屈曲部を各鍵共通の連結部に連結形成し、この連結部を鍵盤シャーシ1上に取り付けることにより、複数の鍵を一体に成形した簡易型の一体鍵構造の鍵盤装置にも適用することができる。
【0028】
【発明の効果】
以上説明したように、請求項1に記載の発明によれば、発光色の異なる複数の発光素子のうち、輝度の低い発光素子が鍵の演奏者側を照明するように、複数の発光素子を鍵の配列方向に配置したので、複数の発光素子を選択的に発光させて鍵を光らせる際、輝度の低い発光素子によって照明された鍵が演奏者の位置から見やすくなり、このため複数の発光素子の発光色ごとに輝度に差があっても、演奏者から見て鍵がほぼ均一の明るさで光って見えるようにすることができる。
また、請求項2に記載の発明によれば、発光色の異なる複数の発光素子のうち、輝度の低い発光素子の照射光が鍵の前側に向けて照射するように、複数の発光素子を鍵の前後方向に配置したので、複数の発光素子を選択的に発光させて鍵を光らせる際、輝度の低い発光素子によって照明された鍵が演奏者の位置から見やすくなり、このため複数の発光素子の発光色ごとに輝度に差があっても、演奏者から見て鍵がほぼ均一の明るさで光って見えるようにすることができる。
【図面の簡単な説明】
【図1】この発明の鍵盤装置を電子鍵盤楽器に適用した一実施形態の要部の平面図。
【図2】図1のA−A矢視における拡大断面図。
【図3】図2の発光体の拡大正面図。
【図4】図2のB−B矢視における拡大断面図。
【図5】図3の発光体の各発光ダイオードを鍵の前後方向に配置した変形例を示した要部の拡大断面図。
【符号の説明】
1 鍵盤シャーシ
2 鍵
2a 白鍵
2b 黒鍵
5 発光体
24 赤色発光ダイオード
25 黄色発光ダイオード
26 ユニット基板
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a keyboard device such as an electronic keyboard instrument.
[0002]
[Prior art]
In an electronic keyboard instrument such as an electronic piano, a plurality of keys are arranged on a keyboard chassis so as to be rotatable in the vertical direction, and a plurality of light emitters are respectively associated with the keyboard chassis below the front part of each key. Navigate to indicate the key to be pressed by selectively illuminating the front side of each key by selectively illuminating these light emitters according to the performance music stored in advance Some are equipped with functions. In this case, the plurality of keys are composed of a white key and a black key, each of which is composed of a light-transmitting synthetic resin, and the front side of each key is viewed from below by a light emitter disposed below each key. When illuminated, the illumination light passes through the key and exits upward so that the key itself appears to shine.
[0003]
In such an electronic keyboard instrument, when a player presses a key, if the light emitter corresponding to each key is a single light emitting element of the same color, the player presses the key with the right hand or with the left hand. Since it cannot be determined whether the key is depressed, conventionally, the light emitter is composed of two light emitting elements having different emission colors, for example, a red light emitting diode that emits red light and a yellow light emitting diode that emits yellow light. As a result, a device has been developed in which it is possible to visually recognize which key is pressed with the left or right hand in the luminescent color of the illuminant.
[0004]
[Problems to be solved by the invention]
However, in such an electronic keyboard instrument, the light emitter is composed of two light emitting elements having different light emission colors, and when these light emitting elements are arranged below each key, the arrangement direction of the keys, that is, the left / right direction of the key, or the key Since it is necessary to arrange in either the direction orthogonal to the arrangement direction, that is, in the front-rear direction of the key, if the luminance of one of the two light emitting elements is lower than the luminance of the other light emitting element, There is a problem that when the element is selectively lighted and the key is lit, the brightness of the key varies in the left-right direction of the key or the front-rear direction of the key as viewed from the performer's position.
[0005]
For example, when two light emitting elements are composed of a red light emitting diode and a yellow light emitting diode, the brightness of the yellow light emitting diode is lower than that of the red light emitting diode, and the illumination by the yellow light emitting diode tends to appear dark. When such a yellow light-emitting diode is arranged on the right side below the key and a red light-emitting diode is arranged on the left side of the yellow light-emitting diode, a key arranged on the right side when viewed from the player's position among a plurality of arranged keys. Since the light of the yellow light-emitting diode corresponding to the light is irradiated to the key toward the opposite side of the performer, the yellow brightness of the keys arranged in the right half from the player's position is higher than the red brightness Not only does it appear dark, but it also appears darker than the yellow brightness of the keys arranged in the left half.
[0006]
Also, when the yellow light emitting diode is placed on the front side under the key and the red light emitting diode is placed on the rear side of the yellow light emitting diode below the key, and each of these light emitting diodes illuminates almost the same position on the front of the key However, since the brightness of the yellow light emitting diode tends to be lower than that of the red light emitting diode, there is a problem that the yellow brightness of each key appears darker than the red brightness.
[0007]
An object of the present invention is to make a key appear to shine with a substantially uniform brightness as viewed from the performer even if there is a difference in luminance among the light emission colors of a plurality of light emitting elements.
[0008]
[Means for Solving the Problems]
According to the first aspect of the present invention, a plurality of light-transmitting keys are arranged on the keyboard chassis so as to be rotatable in the vertical direction, and a light emitter corresponds to the lower side of the plurality of keys. In the keyboard device that selectively emits the plurality of light emitters in this state and emits light by projecting the key from below, the light emitters have different light emission luminances and light emission directions, respectively. Composed of a plurality of light emitting elements, with a predetermined position of the middle part of the keyboard as a boundary, among these light emitting elements, the light emitting direction of the light emitting element having a low luminance is directed to the predetermined position of the intermediate part of the key arrangement direction, The light emitter is arranged in an arrangement direction of the plurality of keys.
[0009]
According to a second aspect of the present invention, a plurality of light-transmitting keys are arranged on the keyboard chassis so as to be rotatable in the vertical direction. In the keyboard device in which light emitters are respectively provided below the plurality of keys in the chassis, and in this state, the plurality of light emitters are selectively emitted to emit light by projecting the keys from below. The body is composed of a plurality of light emitting elements having different light emission luminances and light emitting directions, and among the light emitting elements, the plurality of light emitting elements are arranged so that the light emitting direction of the light emitting elements having low luminance faces the front side of the key. It is arranged in the front-rear direction of the key.
[0010]
In this case, as described in claim 3, the light emitter can be unitized by providing the plurality of light emitters on a common substrate, thereby making the light emitter compact. For this reason, among a plurality of keys consisting of a white key and a black key, it can be easily installed even for a black key in which the space for installing the light emitter is particularly narrow.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which the keyboard apparatus of the present invention is applied to an electronic keyboard instrument will be described with reference to FIGS.
FIG. 1 is a plan view of a main part showing an electronic keyboard instrument, and FIG. 2 is an enlarged cross-sectional view taken along the line AA.
As shown in FIGS. 1 and 2, this electronic keyboard instrument is made of a synthetic resin keyboard chassis 1 incorporated in a musical instrument case, and a synthetic resin made of a synthetic resin disposed on the keyboard chassis 1 so as to be rotatable in the vertical direction. A plurality of keys 2, a hammer arm 3 that pivots and displaces in the vertical direction in accordance with a key pressing operation of these keys 2, and applies an action load to each key 2, and a key pressing operation of each key 2 Each of the switch members 4 outputs a turn-on signal by switching operation, and a light-emitting body 5 that illuminates and lights each key 2.
[0012]
As shown in FIG. 1, the plurality of keys 2 includes a white key 2 a and a black key 2 b, which are arranged in parallel on the keyboard chassis 1. In this case, the white key 2a is longer than the black key 2b, wider at the front end than the black key 2b, and lower in height than the black key 2b. It has almost the same structure as the black key 2b. For this reason, in the following description, the black key 2b is described as the key 2. As shown in FIG. 2, each of these keys 2 has a shaft 7 attached to a key support portion 6 provided at a rear end portion (right end portion in the figure) on a rear end portion (right end portion in the figure). It is configured so that it can be pivoted by the shaft 7 and pivoted in the vertical direction around the shaft 7 so that a hollow pressing portion 8 formed at substantially the middle portion of each key 2 presses the switch member 4. Yes.
[0013]
In this case, each key 2 is urged upward by a hammer arm 3 to be described later, and as a result, normally, as shown in FIG. 2, the L suspended from the front end portion (left end portion in the figure) of each key 2 The letter-shaped stopper piece 9 is regulated to a predetermined initial position (upper limit position) by contacting a key upper limit stopper 10 made of felt or the like provided on the lower surface of the front end portion of the keyboard chassis 1. Each key 2 is rotated counterclockwise in FIG. 2 around the shaft 7 when the key is depressed, and an L-shaped stopper piece 9 is provided from a felt or the like provided at the lower part of the front end portion of the keyboard chassis 1. The position is regulated to a predetermined lower limit position by contacting the lower limit stopper 11 for the key. Each key 2 is guided by a key guide 12 provided on the front end portion of the keyboard chassis 1 so as not to sway.
[0014]
As shown in FIG. 2, the hammer arm 3 includes an arm main body 13 made of synthetic resin, a weight 14 attached to the rear end side of the arm main body 13 (right lower end side in the figure), an arm main body, 13 and a hammer contact portion 15 provided at the front end portion (the upper left end portion in the figure). The hammer arm 3 is arranged in such a manner that the rear end side of the arm body 13 and the weight 14 pass through the opening 1a of the keyboard chassis 1 and corresponds to each key 2 below the key support section 6. Is supported by a hammer support portion 16 provided on the keyboard chassis 1 so as to be pivotable in the vertical direction by a shaft 17. In this state, the hammer contact portion 15 on the front end side of the arm body 13 contacts the lower surface of the key 2. It is configured to slide in contact.
[0015]
As shown in FIG. 2, the hammer arm 3 is normally urged clockwise in FIG. 2 by the weight of the weight 14, and the lower surface of the rear end portion of the arm body 13 is the rear end of the keyboard chassis 1. Abutting on a lower limit stopper 19 made of felt or the like provided at the lower end of the side wall rib 18 in the portion, the position is regulated to a predetermined initial position (lower limit position), whereby the hammer contact portion 15 causes the key 2 to move upward. It is pushing up. Further, when the key 2 is pushed against the weight of the weight 14, the hammer arm 3 pushes down the hammer contact portion 15 by the key 2, and thereby the arm body 13 rotates clockwise in FIG. An action load is applied to the key 2, and the upper surface of the rear end portion of the arm body 13 is in contact with an upper limit stopper 20 provided at the rear end portion of the keyboard chassis 1 so as to be regulated at a predetermined upper limit position. .
[0016]
As shown in FIG. 2, the switch member 4 is composed of a rubber sheet 21 and a switch board 22, and is disposed on the lower surface of the keyboard chassis 1 at a substantially intermediate portion. The rubber sheet 21 is formed in a continuous belt shape in the arrangement direction of the keys 2, and a dome-shaped bulging portion 23 that is elastically deformable is formed at a location corresponding to the pressing portion 8 of each key 2, and these bulging portions 23 are formed. Are inserted into the through holes 1b of the keyboard chassis 1 from below and project upward. The switch board 22 is attached to the lower surface of the keyboard chassis 1 via a rubber sheet 21. Thereby, when the bulging part 23 of the rubber sheet 21 is pressed by the pressing part 8 of the key 2 according to the key pressing operation, the bulging part 23 is elastically deformed and provided in the switch member 4. The movable contact is brought into contact with a fixed contact provided on the switch substrate 22 and thereby an ON signal is output.
[0017]
By the way, each key 2 is made of a light-transmitting synthetic resin, and the front part of each key 2 is illuminated from below by a light emitter 5 disposed below the front part, and the illumination light passes through the key 2. Thus, the key 2 is configured to look shining.
The light emitter 5 includes two light emitting elements having different emission colors, for example, a red light emitting diode 24 that emits red light and a yellow light emitting diode 25 that emits yellow light, as shown in FIG. , 25 are provided on a common unit substrate 26 so as to be covered with a transparent cover member 27, and a pair of connecting leg portions 28 are provided on the lower surface of the unit substrate 26. As shown in FIGS. 2 and 4, the light emitter 5 is attached to a mounting member 29 on the keyboard chassis 1 having a pair of legs 28 positioned below the front of each key 2. Correspondingly, they are arranged below.
[0018]
Further, as shown in FIGS. 3 and 4, the light-emitting body 5 includes a red light-emitting diode 24 and a yellow light-emitting diode 25 arranged on a common unit substrate 26 along the arrangement direction of the key 2, thereby The red light emitting diode 24 is instructed to perform a key pressing operation by the player's right hand, and the yellow light emitting diode 25 is configured to instruct a key pressing operation by the player's left hand. In this case, the brightness of the red light emitting diode 24 and that of the yellow light emitting diode 25 are different, and the brightness of the yellow light emitting diode 25 tends to be lower than the brightness of the red light emitting diode 24. For this reason, the yellow light emitting diode 25 with low brightness is arranged so as to illuminate the player side of the key 2.
[0019]
That is, among the plurality of keys 2 arranged as shown in FIG. 1, it corresponds to each key 2 on the lower half of the left half with the place where the performer is located (that is, approximately the middle part of the keyboard) as a boundary. As shown in FIG. 4, the yellow light emitting diode 25 is disposed on the left side below the key 2 and illuminates the right side portion of the key 2 on the player side. The red light emitting diode 24 on the bass side is disposed on the right side of the yellow light emitting diode 25 below the key 2 and illuminates the left side of the key 2 opposite to the player.
On the other hand, the yellow light-emitting diode 25 corresponding to each key 2 on the high-frequency region in the right half with respect to the location where the performer is located is arranged on the right side below the key 2 so that the performer side of the key 2 Illuminate a certain left part. The red light emitting diode 24 on the high sound range side is disposed on the left side of the yellow light emitting diode 25 below the key 2 and illuminates the left side portion on the opposite side to the player of the key 2.
[0020]
In such an electronic keyboard instrument, among the light emitting diodes 24 and 25 of the light emitter 5, for example, when the red light emitting diode 24 is selected and turned on according to a performance song stored in advance, red light is emitted in front of the key 2. The part is irradiated from below, and the irradiated light passes through the key 2 so that the front part of the key 2 shines red. Further, when the yellow light emitting diode 25 is selected and turned on according to the performance music stored in advance, yellow light is irradiated from the lower side to the front of the key 2, and the irradiated light is transmitted through the key 2. The front part of the key 2 glows yellow.
[0021]
At this time, the yellow light emitting diode 25 having a low luminance is on the player side in the arrangement direction of the keys 2, that is, on the right side that is the player side of each key 2 on the low-frequency region side of the left half from the position where the player is located. Illuminate the portion and illuminate the left portion, which is the player side of each key 2 on the high-frequency region side of the right half, so that the yellow light emitting diode 25 illuminates when the light emitter 5 is selectively emitted to light the key 2 The key 2 is easy to see from the player's position, so that even if the luminance of the yellow light emitting diode 25 is lower than that of the red light emitting diode 24, the key 2 shines with a substantially uniform brightness when viewed from the player. In addition to being able to be seen, the brightness of yellow on the low-frequency region side on the left half and the high-frequency region side on the right half is almost uniform.
[0022]
As described above, in this electronic keyboard instrument, during automatic performance or performance practice, the red light-emitting diode 24 and the yellow light-emitting diode 25 of the light-emitting body 5 are selectively turned on according to the performance music, thereby providing a key. Since the front part of 2 can be illuminated with either red or yellow light so that it can be illuminated with almost uniform brightness, the key 2 to be pressed can be easily seen and the key 2 has been illuminated. Depending on the color, it is possible to visually recognize which key should be pressed with the left or right hand. Thereby, in automatic performance and performance practice, the front part of the key 2 to be depressed according to the performance music shines with a substantially uniform brightness when viewed from the performer, so that the key 2 to be depressed as a navigator is good. Can be directed to.
[0023]
Further, in this electronic keyboard instrument, the red light emitting diode 24 and the yellow light emitting diode 25 of the light emitting body 5 are provided on the common unit substrate 26, so that the light emitting body including the red light emitting diode 24 and the yellow light emitting diode 25 is provided. 5 can be unitized, so that the light emitter 5 can be configured compactly. For this reason, among the plurality of keys 2 composed of the white key 2a and the black key 2b, the light emitter 5 is particularly formed by the hammer arm 3 or the like. The black key 2b having a small installation space can be easily installed.
[0024]
In the above embodiment, the red light emitting diode 24 and the yellow light emitting diode 25 of the light emitter 5 are arranged along the arrangement direction of the key 2, but not limited thereto, for example, as in the modification shown in FIG. The red light-emitting diode 24 and the yellow light-emitting diode 25 may be disposed along a direction orthogonal to the arrangement direction of the keys 2, that is, the front-rear direction of the keys 2. In this case, as shown in FIG. 5, a red light emitting diode 24 having a high luminance is arranged on the front side of the key 2, and the light emitted from the red light emitting diode 24 is irradiated toward the rear of the key 2, so that the luminance is low. The yellow light-emitting diode 25 may be arranged on the rear side of the red light-emitting diode 24, and the light emitted from the yellow light-emitting diode 245 may be irradiated toward the inclined portion 30 on the front surface of the key 2.
[0025]
In the electronic keyboard instrument of such a modification, when the red light emitting diode 24 and the yellow light emitting diode 25 are selectively emitted to light the key 2, the light emitted from the yellow light emitting diode 25 having low luminance is emitted from the front surface of the key 2. Since the inclined portion 30 is irradiated, the key 2 illuminated by the yellow light emitting diode 25 is easier to see from the player's position than when the key 2 illuminated by the red light emitting diode 24 is illuminated. For this reason, even if the luminance of the yellow light emitting diode 25 is lower than that of the red light emitting diode 24, the key 2 can be seen to shine with substantially uniform brightness as viewed from the performer.
[0026]
Moreover, in the said embodiment and its modification, although the red light emitting diode 24 and the yellow light emitting diode 25 were provided on the common unit board | substrate 26, and the light-emitting body 5 was integrated, it is not restricted to this, The red light emitting diode 24 is not limited. And the yellow light emitting diode 25 may be disposed independently of each other. In addition, the case where the red light emitting diode 24 and the yellow light emitting diode 25 are used as the light emitting elements having different light emitting colors has been described. However, the present invention is not limited to this, and the green light emitting diode that emits green light or the blue light emitting that emits blue light. Light emitting diodes such as diodes may be used, or these light emitting diodes may be used in appropriate combination.
[0027]
Further, in the above-described embodiment and its modification, a keyboard having a structure in which a hammer arm 3 is rotatably attached to the keyboard chassis 1 in correspondence with each key 2 and an action load is applied to each key 2 by the hammer arm 3. Although the device has been described, the present invention is not limited thereto, and for example, a keyboard device having a structure in which a spring member such as a coil spring is provided between the keyboard chassis 1 and each key 2 and each key 2 is biased upward by these spring members. In addition, a bent portion that elastically deforms in the vertical direction is formed at the rear end portion of each key 2, the bent portion is connected to a common connecting portion for each key, and the connecting portion is attached to the keyboard chassis 1. Thus, the present invention can also be applied to a keyboard device having a simple integrated key structure in which a plurality of keys are integrally formed.
[0028]
【The invention's effect】
As described above, according to the invention described in claim 1, among the plurality of light emitting elements having different emission colors, the plurality of light emitting elements are arranged such that the light emitting element having a low luminance illuminates the key player side. Since the keys are arranged in the direction of the key arrangement, when the keys are lit by selectively emitting light from a plurality of light emitting elements, the keys illuminated by the light emitting elements having low luminance are easy to see from the player's position, and thus the plurality of light emitting elements Even if there is a difference in luminance for each of the luminescent colors, the key can be made to shine with almost uniform brightness as viewed from the performer.
According to the second aspect of the present invention, the plurality of light-emitting elements are arranged in the key so that the light emitted from the light-emitting elements having a low luminance among the plurality of light-emitting elements having different emission colors is emitted toward the front side of the key. The key illuminated by the light emitting element with low brightness is easy to see from the player's position when selectively emitting light by emitting a plurality of light emitting elements. Even if there is a difference in luminance for each luminescent color, it is possible to make the key appear to shine with almost uniform brightness when viewed from the performer.
[Brief description of the drawings]
FIG. 1 is a plan view of a main part of an embodiment in which a keyboard device of the present invention is applied to an electronic keyboard instrument.
FIG. 2 is an enlarged cross-sectional view taken along the line AA in FIG.
3 is an enlarged front view of the light emitter of FIG. 2. FIG.
4 is an enlarged cross-sectional view taken along line BB in FIG.
5 is an enlarged cross-sectional view of a main part showing a modification in which each light-emitting diode of the light-emitting body of FIG. 3 is arranged in the front-rear direction of the key.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Keyboard chassis 2 Key 2a White key 2b Black key 5 Light emitter 24 Red light emitting diode 25 Yellow light emitting diode 26 Unit board

Claims (3)

鍵盤シャーシ上に光透過性を有する複数の鍵がそれぞれ上下方向に回動可能に配列され、前記鍵盤シャーシに発光体が前記複数の鍵の下方にそれぞれ対応して設けられ、この状態で前記複数の発光体を選択的に発光させて前記鍵を下方から投光して光らせる鍵盤装置において、
前記発光体は、夫々発光輝度及び発光方向の異なる 複数の発光素子からなり、鍵盤の中間部分の所定位置を境にして、これら発光素子のうち、輝度の低い発光素子の発光方向が前記鍵の配列方向の中間部の所定位置を向くように、前記発光体が前記複数の鍵盤の配列方向に配置されていることを特徴とする鍵盤装置。
A plurality of light-transmitting keys are arranged on the keyboard chassis so as to be pivotable in the vertical direction, and light emitters are provided on the keyboard chassis so as to correspond to the lower sides of the plurality of keys. In the keyboard device that selectively emits the light emitter and projects the key from below to shine.
The light emitters have different light emission brightness and light emission direction. Composed of a plurality of light emitting elements, with a predetermined position of the middle part of the keyboard as a boundary, among these light emitting elements, the light emitting direction of the light emitting element having a low luminance is directed to the predetermined position of the intermediate part of the key arrangement direction, The keyboard device, wherein the light emitters are arranged in an arrangement direction of the plurality of keyboards.
鍵盤シャーシ上に光透過性を有する複数の鍵がそれぞれ上下方向に回動可能に配列され、前記鍵盤 シャーシに発光体が前記複数の鍵の下方にそれぞれ対応して設けられ、この状態で前記複数の発光体を選択的に発光させて前記鍵を下方から投光して光らせる鍵盤装置において、
前記発光体は、夫々発光輝度及び発光方向との異なる複数の発光素子からなり、これら発光素子のうち、輝度の低い発光素子の発光方向が前記鍵の前側に向くように、前記複数の発光素子が前記鍵の前後方向に配置されていることを特徴とする鍵盤装置。
A plurality of light-transmitting keys are arranged on the keyboard chassis so as to be rotatable in the vertical direction, and light emitters are provided on the keyboard chassis so as to correspond to the lower sides of the keys. In the keyboard device that selectively emits the light emitter and projects the key from below to shine.
The light-emitting body is composed of a plurality of light-emitting elements having different emission luminances and light-emitting directions, and among the light-emitting elements, the plurality of light-emitting elements are arranged so that the light-emitting direction of the light-emitting elements with low luminance is directed to the front side of the key. Is arranged in the front-rear direction of the key.
前記発光体は、前記複数の発光素子が共通の基板上に設けられていることを特徴とする請求項1または2に記載の鍵盤装置。  The keyboard device according to claim 1, wherein the light emitter is provided with the light emitting elements on a common substrate.
JP2001061465A 2001-03-06 2001-03-06 Keyboard device Expired - Fee Related JP4061851B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001061465A JP4061851B2 (en) 2001-03-06 2001-03-06 Keyboard device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001061465A JP4061851B2 (en) 2001-03-06 2001-03-06 Keyboard device

Publications (2)

Publication Number Publication Date
JP2002258863A JP2002258863A (en) 2002-09-11
JP4061851B2 true JP4061851B2 (en) 2008-03-19

Family

ID=18920753

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001061465A Expired - Fee Related JP4061851B2 (en) 2001-03-06 2001-03-06 Keyboard device

Country Status (1)

Country Link
JP (1) JP4061851B2 (en)

Also Published As

Publication number Publication date
JP2002258863A (en) 2002-09-11

Similar Documents

Publication Publication Date Title
US5568367A (en) Remote control with key lighting
US7340273B2 (en) Portable communication terminal with improved light emission structure
JP7212850B2 (en) Switch devices and electronic devices
US6777633B2 (en) Switch device
JP4061851B2 (en) Keyboard device
JPH09306277A (en) Illuminated switch
JP2001265348A (en) Keyboard device
JP3480020B2 (en) Keyboard device
JP2001282244A (en) Keyboard device
JP3496298B2 (en) Keyboard device for electronic keyboard instruments
JP2596144Y2 (en) Illuminated push switch lighting structure
JP5257685B2 (en) Keyboard device
JP2550075Y2 (en) Switch with display device
JP3465377B2 (en) Keyboard device for electronic keyboard instruments
JP3743331B2 (en) Keyboard device
JPH09171740A (en) Luminous switch
JP3716611B2 (en) Keyboard device
JP2000276161A (en) Keyboard device
JP2857314B2 (en) Electronic device case structure
GB2364275A (en) Backlit keyboard with a push button(s) having an illuminator(s) thereunder which is operable on movement of the button between first and second positions
JP2000155582A (en) Keyboard device
JPS59148217A (en) Illumination pushbutton switch
JPH05101736A (en) Push button device with illumination
JP3700430B2 (en) Keyboard device
JP3775407B2 (en) Electronic keyboard instrument keyboard device

Legal Events

Date Code Title Description
RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20060206

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060323

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20060413

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20070724

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20070807

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20071004

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20071204

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20071217

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

Ref document number: 4061851

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110111

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110111

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120111

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130111

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130111

Year of fee payment: 5

LAPS Cancellation because of no payment of annual fees