JP2004265697A

JP2004265697A - Signal lamp and reflecting structure of signal lamp fitting

Info

Publication number: JP2004265697A
Application number: JP2003054085A
Authority: JP
Inventors: Naoki Ishimaru; 直樹石丸; Yasuhide Matsuo; 康秀松尾; Susumu Kitajima; 進北島
Original assignee: Toyota Industries Corp; Toyota Motor Corp
Current assignee: Toyota Industries Corp; Toyota Motor Corp
Priority date: 2003-02-28
Filing date: 2003-02-28
Publication date: 2004-09-24

Abstract

<P>PROBLEM TO BE SOLVED: To provide a signal lamp fitting and a reflecting structure of the signal lamp fitting in which a normal color visible at a switch-off time and a function color visible at a lighting time are respectively different, and out of it the normal color is visible nearly as a single color. <P>SOLUTION: A stop lamp 3 comprises a reflector 12, a LED 13, and an extension 14. The LED emits a red color light, and its red color light is reflected to the rear side by a reflecting face 16a of the reflector 12 and is irradiated to the outside through a lens 11. At the switch-off time of the LED 13, the black color of the extension 14 is reflected on the reflector 12 and by this reflecting action, the whole stop lamp 3 looks nearly black. The LED 13 is arranged on the lower side of the surface 21b of the flat plate part 21 of the extension 14 and in this example of implementation, it is arranged on the lower side by a distance H from the height position of the surface 21b. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、操作者の操作内容に応じた所定色を映し出す信号灯具及び信号灯具の反射構造に関するものである。
【０００２】
【従来の技術】
従来、車両にはテール／ストップランプ、リヤターンシグナルランプ、バックアップランプ等の車両用灯具が搭載されている。この種の車両用灯具として例えば特許文献１に一例が開示され、図６がその車両用灯具５１の縦断面図である。この車両用灯具５１は消灯時に見える色（以下、通常色という）と、点灯時に見える色（以下、機能色という）とが各々異なるように見えるランプである。
【０００３】
車両用灯具５１はランプハウジング５２とその前面開口部を覆う無色透明のアウターレンズ５３とを備え、アウターレンズ５３の内面には光を一方向（左右方向）に拡散させる拡散光学要素群５４が設けられている。ランプハウジング５２の内部には赤色透明のカラーキャップ５５で周りが囲まれた光源バルブ５６と、その光源バルブ５６からの光をアウターレンズ５３側に反射する反射面５７とが配置されている。
【０００４】
アウターレンズ５３と光源バルブ５６との間には無色透明のインナーレンズ５８が配置され、その外面には光を一方向（上下方向）に拡散させる拡散光学要素群５９が設けられている。インナーレンズ５８の内面には拡散光学要素群５９に入射した光が屈折して出射する範囲外の部分に青色の不透明部６０が設けられている。不透明部６０は高輝度のメタリック調の青色が得られるものから構成され、例えば印刷、ホットスタンプ、塗装、多色成形等により形成される。
【０００５】
ここで、車両用灯具５１の消灯時に光軸Ｚ−Ｚと平行の位置Ｅ１で車両用灯具５１を見た場合、外来光（視線）Ｗ１が光軸Ｚ−Ｚと平行で拡散光学要素群５９に入射し、この拡散光学要素群５９によって上下方向に屈折してインナーレンズ５８の内側に入り込む。このとき、インナーレンズ５８の内側に入り込んだ光は不透明部６０のない部分を通過し、この結果として車両用灯具５１を位置Ｅ１で見た人にはインナーレンズ５８が無色に見える。
【０００６】
また、車両用灯具５１の消灯時に見る角度（見る向き）を拡散光学要素群５９の拡散方向（上下方向）の位置Ｅ２に変えた場合、外来光（視線）Ｗ２が斜め下方から拡散光学要素群５９に入射し、この拡散光学要素群５９によって上下方向に屈折して不透明部６０に到達する。従って、車両用灯具５１を消灯時に位置Ｅ２から見た人にはインナーレンズ５８が青色に見え、以上によって車両用灯具５１では消灯時に無色又は青色の通常色が得られる。
【０００７】
一方、車両用灯具５１の点灯時には光源バルブ５６からの光がカラーキャップ５５を透過し、このときに赤色に着色された光がインナーレンズ５８を拡散透過して外部に照射され、カラーキャップ５５の赤色の機能色が得られる。また、光源バルブ５６から出た光のうち不透明部６０に達したものはインナーレンズ５８から出射されないので、インナーレンズ５８を拡散透過した光のみが照射されて濁りのない赤色の機能色が得られる。
【０００８】
【特許文献１】
特開２０００−７１８６２号公報（第３−５頁、第１図）
【０００９】
【発明が解決しようとする課題】
ところが、従来技術で述べた車両用灯具５１では消灯時に見える通常色が見る角度によって無色又は青色に見える２色となっている。従って、この車両用灯具５１は消灯時と点灯時で各々異なる色で見える構成であっても、消灯時には無色と青色の２色が表示されるので、車両のデザイン上、消灯時の車両用灯具５１と車体色とを同じ色に合わせたくても、それが実現できない問題が生じていた。
【００１０】
また、特許文献１には消灯時に太陽光等の外来光を入射しても、その外来光がアウターレンズ５３やインナーレンズ５８を透過する間に減衰し、その入射光がカラーキャップ５５で反射した後も両レンズ５３，５８で減衰して、カラーキャップ５５の色が見えないと記載してある。しかし、光源バルブ５６はインナーレンズ５８の直ぐ後に配置されているので、光源バルブ５６の影がレンズ５８に写ってしまい、このことも消灯時における車両用灯具５１の単一色化に支障を来していた。
【００１１】
本発明は前記の問題点に鑑みてなされたものであって、その目的は、消灯時に見える通常色と点灯時に見える機能色とが各々異なり、このうち通常色がほぼ単一色に見える信号灯具及び信号灯具の反射構造を提供することにある。
【００１２】
【課題を解決するための手段】
前記の目的を達成するため請求項１に記載の発明では、所定色の光を発光する発光体と、前記発光体の光を反射させる反射材と、前記発光体の点灯時の色と異なる自身の色を消灯時に前記反射材に映り込ませる映込部材と、前記発光体、反射材及び映込部材を外側から覆い前記反射材の反射光を透過する透光部材とを備え、所定角度を持たせた斜め位置から前記透光部材の内側を見たときに、前記映込部材によって隠れる位置に前記発光体を配置した。
【００１３】
この発明によれば、発光体が点灯（点滅）した場合には発光体に基づく色（機能色）が得られ、発光体が消灯した場合には反射材に映り込んだ機能色と異なる色の映込部材の色（通常色）が得られる。また、斜め位置から透光部材の内側を見たときに映込部材によって隠れる位置に発光体を配置したので、外側から信号灯具の内部を見ても発光体が映込部剤に隠れて見え難くなる。従って、例えば発光体の発光部が着色されていても消灯時の信号灯具はその発光部分がほぼ一色の通常色として見え、消灯時における信号灯具の単一色化が図れる。
【００１４】
請求項２に記載の発明では、請求項１に記載の発明において、前記映込部材は前記発光体よりも透光部材側に位置した延出部を備え、前記発光体は前記延出部の表面に対して前記反射材の反射面から離間する側に配置されている。この発明によれば、映込部材の一部を構成する延出部の表面に対して反射材の反射面から離間する側に発光体を配置したので、その離間する距離を広くとれば、信号灯具の内部を見たときに発光体が一層見え難くなる。
【００１５】
請求項３に記載の発明では、請求項１又は２に記載の発明において、前記反射材の前記反射面を被取付部に対する取付状態のときに所定角度を持たせて下向きとした。この発明によれば、請求項１又は２に記載の発明の作用に加え、反射材の反射面を被取付部に対する取付状態のときに所定角度を持たせて下向きとしているので、反射面によって太陽光等を反射せず、映込部材の色を反射材に映り込ませることが可能となる。
【００１６】
請求項４に記載の発明では、請求項２又は３に記載の発明において、前記延出部は前記映込部材の本体部に対して一体形成されている。この発明によれば、請求項２又は３に記載の発明の作用に加え、延出部が映込部材に対して一体形成されているので、例えば映込部材の本体と延出部とが別部品である場合に比べて被取付部への組付工程が減り、組付工程の作業が楽になる。
【００１７】
請求項５に記載の発明では、請求項２〜４のうちいずれか一項に記載の発明において、前記発光体と前記反射材とが各々組をなして複数形成され、隣接する組同士のうち一方の組の前記延出部の内面側に他方の組の前記反射材が配置されている。この発明によれば、請求項２〜４のうちいずれか一項に記載の発明の作用に加え、発光体と反射材とが各々組をなして複数形成されるので、発光源が複数存在することになり、高輝度の光を信号灯具から照射可能となる。
【００１８】
請求項６に記載の発明では、請求項１〜５のうちいずれか一項に記載の発明において、前記発光体はその発光部が反射材側を向いて配置されている。この発明によれば、請求項１〜５のうちいずれか一項に記載の発明の作用に加え、発光体はその発光部が反射材側を向いて配置されているので、発光部の光を反射材で反射させる回数が少なく済み、光の経路長の短縮化が図れることによって結果として高輝度の光を信号灯具から照射可能となる。
【００１９】
請求項７に記載の発明では、請求項１〜７のうちいずれか一項に記載の発明の作用に加え、前記発光体はＬＥＤである。この発明によれば、請求項１〜７のうちいずれか一項に記載の発明の作用に加え、ＬＥＤは例えば光源バルブ等に比べて小さいので、発光体としてＬＥＤを用いることによって発光体が一層見え難くなり、消灯時における信号灯具の単一色化に一層寄与する。
【００２０】
請求項８に記載の発明では、発光体の点灯時にはその光を反射材により反射し、前記発光体及び反射材を覆う透光部材を介してその反射光を外部に照射する信号灯具の反射構造であって、前記発光体の消灯時には前記発光体に並設された映込部材の色を前記反射材に映り込ませて前記発光体と異なる色を映し出し、所定角度を持たせた斜め位置から前記透光部材の内側を見たときに、前記映込部材によって隠れる位置に前記発光体を配置した。この発明によれば、請求項１と同様の作用が得られる。
【００２１】
【発明の実施の形態】
以下、本発明を車両用の信号灯具に具体化した一実施形態を図１〜図３に従って説明する。
【００２２】
図３は、車両１を後方から見た模式斜視図である。車両１の背面には左右一対のリヤランプ（コンビネーションランプ）２が配設されている。リヤランプ２は同図の上側から順に信号灯具としてのストップランプ３、ターンシグナルランプ４、バックアップランプ５、テールランプ６を組み合わせて構成されている。被取付部としての車体７の背面には他の部分と異なる色（本例では黒色）となった変色部８が設けられ、その変色部８の両端にストップランプ３が配置されている。
【００２３】
リヤランプ２はその内部に黄色キャップが取り付けられたターンシグナルランプ４用の光源バルブ４ａと、白色光を発光するバックアップランプ５用の光源バルブ５ａと、赤色キャップが取り付けられたテールランプ６用の光源バルブ６ａとを備えている。ターンシグナルランプ４は車両旋回時に黄色光を点滅し、バックアップランプ５は後進時に白色光を点灯し、テールランプ６はヘッドライト点灯時に赤色光を点灯する。
【００２４】
図１はストップランプ３の内部を示す模式斜視図であり、図２は図１のＩＩ−ＩＩ線断面図である。リヤランプ２は車体７（図１参照）に組み付けられるハウジング９を備え、ハウジング９には開口部１０を覆うように無色透明の透光部材としてのレンズ１１が取り付けられている。ハウジング９の内部には光源バルブ４ａ〜６ａの他に、ストップランプ３を構成するリフレクタ１２、ＬＥＤ１３及びエクステンション１４が収容されている。
【００２５】
リヤランプ２は互いに対向するリフレクタ１２とＬＥＤ１３とで組をなし、本例では９組の発光単位からなっている。その発光単位は同図の上下方向に複数の段（本例では３段）をなすように配置され、同図の下側から順に１段目〜３段目とすると１段目が３組、２段目が２組、３段目が１組の発光単位が配置されている。また、発光単位を列で見て同図の左側から順に１列目〜３列目とすると、１列目が３組、２列目が２組、３列目が１組で配置されている。
【００２６】
リフレクタ１２（ＬＥＤ１３）は１段目よりも２段目が、２段目よりも３段目がフロント側に位置するようにずれて配置されている。また、リフレクタ１２（ＬＥＤ１３）は同一段で見た場合、１列目よりも２列目が、２列目よりも３列目がフロント側に位置するようにずれて配置されている。なお、リフレクタ１２が反射材、ＬＥＤ１３が発光体、エクステンション１４が映込部材に相当する。
【００２７】
図２に示すように、リフレクタ１２はその表面が曲面状となるように湾曲形状をなし、プラスチック製の本体部１５と、本体部１５の表面に配設された反射部１６とを備えている。反射部１６はアルミ蒸着により形成され、本体部１５の表面のほぼ全域に亘って配置されている。ストップランプ３を真後ろから見たときの視線を水平軸Ｌとした場合、リフレクタ１２は反射部１６の反射面１６ａと水平軸Ｌとのなす角度θａが所定の鋭角となるように、反射面１６ａが下側向きに配置されている。
【００２８】
ＬＥＤ（発光ダイオード）１３はリフレクタ１２の下方位置に各々配置されている。ＬＥＤ１３は発色光が赤色であり、その発光部１３ａがリフレクタ１２側（図２では上側）を向く状態で基板１７に配置されている。車両１の運転操作においてブレーキ操作がなされると、ＬＥＤ１３が赤色光をリフレクタ１２に向かって発光し、その赤色光がリフレクタ１２の反射面１６ａによってリヤ側に反射することによって、その反射光がレンズ１１を透過して外部に照射される。
【００２９】
リフレクタ１２の反射面１６ａと対向する位置には基板１７を組み付けるためのブラケット１８が配設されている。基板１７はネジ１９を基板１７の挿通孔１７ａに挿通して、ブラケット１８の組付部１８ａに設けたネジ穴１８ｂにネジ１９を螺着することによってブラケット１８の裏面に固定されている。ブラケット１８の中央部には基板１７上のＬＥＤ１３をブラケット１８の上面側に露出するための略円形状の孔部１８ｃが形成されている。
【００３０】
複数のリフレクタ１２のうち１段目及び２段目のリフレクタ１２には、その裏面に左右方向に亘って延びる支持部１５ａが突設されている。２段目及び３段目のブラケット１８は組付部１８ａと反対側の端部が支持部１５ａの上面に載置された状態となっている。リフレクタ１２は下端部の裏面にネジ穴１５ｂが形成され、組付部１８ａの先端に設けた挿通孔１８ｄにネジ２０を挿通してネジ穴１５ｂに螺着することでブラケット１８に組み付けられている。
【００３１】
図１に示すように、エクステンション１４はハウジング９の形状に合わせて内部に空間を有するとともに、リヤ側が開口した形状をなしている。また、エクステンション１４は例えばプラスチック等の樹脂を材質とし、表面全体が黒色に着色されている。エクステンション１４は各リフレクタ１２の周囲を囲むような形状に形成されている。
【００３２】
以下に詳述すると、エクステンション１４の本体部１４ａには１段目と２段目のリフレクタ１２の上方位置に、リヤ側に突出する略板状の平板部２１が一体形成されている。このため、上段の平板部２１の内面の下側に下段のリフレクタ１２が位置した状態となる。エクステンション１４の底部２２（図１参照）及び平板部２１は階段状をなすように配置されている。平板部２１及び底部２２は同じ段のＬＥＤ１３に対し水平方向に並んだ状態に配置され、ＬＥＤ１３の光の照射経路を確保するためにＬＥＤ１３側の端部に切欠部２１ａ，２２ａが形成されている。
【００３３】
また、エクステンション１４の本体部１４ａにはリフレクタ１２を側方から覆うための壁部２３が各列毎に一体形成されている。エクステンション１４の平板部２１、底部２２、壁部２３及び内壁面２４はＬＥＤ１３の消灯時、リフレクタ１２の反射面１６ａに自身の色を映り込ませる部材として機能する。従って、エクステンション１４が黒色の場合、この黒色がリフレクタ１２に映り込むことによって消灯時のストップランプ３は黒色に見える。なお、平板部２１及び底部２２が延出部を構成する。
【００３４】
図２に示すように、ＬＥＤ１３は平板部２１の表面２１ｂよりも下側に配置され、本例では表面２１ｂの高さ位置から距離Ｈだけ下側に配置されている。距離Ｈは水平軸Ｌを基準に斜め上方からストップランプ３の内部を覗いてもＬＥＤ１３が見えない距離に設定されている。また、図示しないが底部２２側に位置するＬＥＤ１３も、平板部２１と同様に表面２２ｂの高さ位置から距離Ｈだけ下側に配置されている。
【００３５】
また、リヤランプ２の内部を覗き込む目視位置Ｐが水平軸Ｌに対して斜め上方である場合、ＬＥＤ１３はその目視位置Ｐと平板部２１（底部２２）のＬＥＤ１３側の端部２５とを結ぶ視線経路Ｒよりも下側に位置した状態であるとも言える。このため、発光部１３ａの頂部と端部２５とを結ぶ経路Ｓと水平軸Ｌとがなす角度を最大角度θｍａｘとした場合、斜め上方からストップランプ３を覗き込んだときの角度θｂが最大角度θｍａｘを超えない範囲であればＬＥＤ１３が見えない構造である。
【００３６】
エクステンション１４の取付手順としては、まずＬＥＤ１３が実装された基板１７をネジ１９によってブラケット１８に取り付け、基板１７の取付後、各列単位でそのブラケット１８をネジ２０によってリフレクタ１２に取り付ける。そして、そのリフレクタ１２をネジ（図示省略）によって各列毎にハウジング９に固着し、そこにエクステンション１４を組み付けることでストップランプ３が組み立てられる。
【００３７】
次に、前記のように構成されたストップランプ３の作用を説明する。
運転者が車両１に乗り込んでブレーキ操作がなされて、ＬＥＤ１３が点灯するとＬＥＤ１３の赤色光がリフレクタ１２の反射面１６ａに向けて照射される。そして、ＬＥＤ１３からの光はリフレクタ１２でリヤ側に向かうように反射され、その反射光Ｃ１が透明のレンズ１１を透過して外部に照射される。従って、ストップランプ３が赤色に見えることになり、後続車に対しブレーキが踏まれたことが伝えられる。
【００３８】
一方、ＬＥＤ１３の消灯時にはエクステンション１４の黒色がリフレクタ１２に映り込み、この映り込み作用によってストップランプ３は全体がほぼ黒色に見える。例えば、上方からストップランプ３を見た場合には平板部２１（底部２２）の表面２１ｂの黒色がリフレクタ１２の反射面１６ａに映り込み、その映り込んだ黒色が反射色Ｃ２としてリヤ側に映し出される。また、左右方向の斜め位置からストップランプ３を見た場合には、壁部２３や内壁面２４の黒色がリフレクタ１２に映り込んでストップランプ３が黒色に見える。
【００３９】
ところで、レンズ１１の外側からランプ内部のＬＥＤ１３が見えると、ＬＥＤ１３自体の色（赤色）が見えてしまい、それによって消灯時におけるストップランプ３の単一色化が妨げられる。しかし、本例ではエクステンション１４の平板部２１及び底部２２の表面２１ｂ，２２ｂに対して距離Ｈだけ下側にＬＥＤ１３が配置されているので、レンズ１１の外側からＬＥＤ１３が見え難くなり、消灯時のストップランプ３は全体がほぼ一色の黒色として見える。
【００４０】
また、リフレクタ１２をその反射面１６ａが上向きとなるように配置すると、反射面１６ａで太陽光を反射してエクステンション１４の黒色が映り込まなくなり、消灯時における単一色化に支障を来す。しかし、本例ではリフレクタ１２の反射面１６ａが下向きとなるように角度θａを付けて配置するので、反射面１６ａが太陽光を反射せず反射面１６ａにエクステンション１４の黒色を映り込ませることが可能となり、消灯時のストップランプ３が一色の黒色として見え易くなる。
【００４１】
本例では、エクステンション１４に平板部２１及び底部２２を設け、その表面２１ｂ，２２ｂの高さ位置よりもＬＥＤ１３を距離Ｈだけ下側に配置したので、外側からストップランプ３を見たときにＬＥＤ１３が見え難くなり、消灯時におけるストップランプ３の単一色化が図れる。また、リフレクタ１２を反射面１６ａが下向きとなるように配置したので、太陽光等に邪魔されずにエクステンション１４の黒色をリフレクタ１２に映り込ませることが可能となり、消灯時のストップランプ３の単一色化に一層寄与する。
【００４２】
従って、この実施形態では以下のような効果を得ることができる。
（１）エクステンション１４に平板部２１及び底部２２を設け、平板部２１及び底部２２の表面（上面）２１ｂ，２２ｂに対して距離Ｈだけ下側にＬＥＤ１３が配置されているので、外側からストップランプ３の内部を見てもＬＥＤ１３が平板部２１や底部２２に隠れて見え難くなる。従って、例えばＬＥＤ１３の発光部１３ａが赤色に着色されていても、ＬＥＤ１３の消灯時にはストップランプ３がほぼ黒一色に見え、消灯時におけるストップランプ３の単一色化を図ることができる。
【００４３】
（２）リフレクタ１２をその反射面１６ａが下向きとなるように角度θａを付けて配置するので、反射面１６ａが太陽光を反射し難くなり、これに伴って反射面１６ａにエクステンション１４の黒色を映り込ませることができる。よって、消灯時のストップランプ３をほぼ一色の黒色として見え易くすることができる。
【００４４】
（３）平板部２１及び壁部２３がエクステンション１４の本体部１４ａに対して一体形成されているので、例えば平板部２１や壁部２３が本体部１４ａと別部品である場合に比べてハウジング９への組付工程が減らすことができ、組付工程の作業が楽になる。
【００４５】
（４）リフレクタ１２とＬＥＤ１３とが各々組をなして複数形成されるので、発光源が複数存在することになり、高輝度の光をストップランプ３から照射することができる。
【００４６】
（５）ＬＥＤ１３から照射された赤色光はリフレクタ１２で反射された後、直ぐにレンズ１１を通過して外部に照射される。従って、消灯時の色を映り込ませるための比較的肉厚の厚いインナーレンズ５８（図６参照）等を介することがないので、光の減衰が少なくて済み、結果として高輝度の光をストップランプ３から照射することができる。
【００４７】
（６）ＬＥＤ１３は例えば光源バルブ等に比べて小さいので、外側からストップランプ３を覗いてもＬＥＤ１３が見え難くなり、消灯時におけるストップランプ３の単一色化に一層寄与する。
【００４８】
（７）上段の平板部２１の内面の下側に下段のリフレクタ１２が配置されているので、上段ではその平板部２１が消灯時に自身の色を映り込ませる部材として機能し、下段では太陽光を遮る庇の機能を担う。従って、１つの平板部２１で２つの機能を満たせることになり、部品点数の低減化が図れる。
【００４９】
なお、実施形態は前記に限定されず、例えば次の態様に変更してもよい。
○ ＬＥＤ１３は発光部１３ａがリフレクタ１２の反射面１６ａ側を向く配置位置であることに限定されない。例えば図４に示すように、発光部１３ａが下側を向くようにＬＥＤ１３を配置し、リフレクタ１２（反射面１６ａ）を半円状にして、ＬＥＤ１３からの光を反射面１６ａで複数回反射させて外部に照射する構成でもよい。
【００５０】
○ リフレクタ１２は反射面１６ａが下向きであることに限らず、例えば図５に示すように反射面１６ａが上向きである構成としてもよい。この場合、リフレクタ１２に太陽光が射し込まないように、反射面１６ａに対向するエクステンション１４の平板部２１を充分な長さとする必要がある。
【００５１】
○ リフレクタ１２の反射面１６ａの向きは上向き又は下向きに限定されない。例えば、図５に示す縦軸又は横軸を中心軸にして回転させることによって、所定角度傾いた向きに配置してもよい。
【００５２】
○ 信号灯具はストップランプ３に限らず、例えばターンシグナルランプ４、バックアップランプ５、テールランプ６等の他のランプでもよい。また、リヤランプ２は各種ランプ３〜６が一体となった構成に限らず、各々が別々でもよいし、所定のものを組み合わせた構成でもよい。
【００５３】
○ 信号灯具はストップランプ３や実施形態中に記載の各種ランプ４〜６に限らず、例えばヘッドランプやフロント側のターンシグナルランプ等に用いてもよい。また、レンズ１１は無色透明に限らず、赤色や黄色等の有色透明でもよい。
【００５４】
○ エクステンション１４は平板部２１や壁部２３が本体部１４ａと一体であることに限らず、平板部２１及び壁部２３が本体部１４ａに対し別体である構成としてもよい。また、エクステンション１４の形状は平板部２１及び壁部２３を有する形状に限らず、ＬＥＤ１３の消灯時に自身の色をリフレクタ１２に映し込むことが可能で、ＬＥＤ１３を見え難くする形状であればよい。
【００５５】
○ リフレクタ１２はアルミ蒸着により反射面１６ａが形成される構成に限らず、例えば銀色塗装によって形成される構成でもよい。
○ エクステンション１４は黒色に限らず、車両１の車体色に合わせて灰色、黄色、青色、緑色等を用いてもよく、その色は特に限定されない。
【００５６】
○ ＬＥＤ１３の発光色は赤色に限らず、黄色や白色等を用いてもよく、発光色は特に限定されない。また、発光体はＬＥＤ１３に限らず、例えば発光バルブを用いてもよい。
【００５７】
○ 平板部２１（底部２２）の表面２１ｂ（２２ｂ）と発光部１３ａとの間の距離Ｈは適宜変更してもよい。また、ストップランプ３を上方から覗き込んだとき、ＬＥＤ１３が見えない最大角度θｍａｘも適宜変更してもよい。
【００５８】
○ 延出部は平板状の平板部２１や底部２２に限らず、例えばブロック状や屈曲形状等でもよく、ＬＥＤ１３を隠す形状であればその形状は特に限定されない。
【００５９】
○ リフレクタ１２とＬＥＤ１３との組数は９組に限らず、例えば１組や１０組、２０組等の９組以外の数値の組数を用いてもよい。
○ 信号灯具は車両１に搭載されることに限らず、例えば電気機器、ロボット等の運転者の操作に応じた信号を点灯（点滅）させる必要のあるものであれば特に限定されない。
【００６０】
前記実施形態及び別例から把握できる技術的思想について、以下にその効果とともに記載する。
（１）請求項１〜７において、所定の傾斜を持って斜めから前記透光部材を見たときの目視位置と、前記映込部材の発光体側の端部とを結ぶ視線経路よりも下側に前記発光体を配置した。
【００６１】
（２）請求項８において、前記映込部材には前記発光体よりも透光部材側に延出部が設けられ、前記発光体は前記延出部の表面に対して前記反射材の反射面から離間する側に配置されている。
【００６２】
（３）請求項８及び前記技術的思想（２）において、前記反射材の前記反射面を被取付部に対する取付状態のときに所定角度を持たせて下向きとした。
（４）前記技術的思想（２），（３）において、前記延出部は前記映込部材の本体部に対して一体形成されている。
【００６３】
（５）前記技術的思想（２）〜（４）において、前記発光体と前記反射材とが各々組をなして複数形成され、隣接する組同士のうち一方の組の前記延出部の内面側に他方の組の前記反射材が配置されている。
【００６４】
（６）請求項８及び前記技術的思想（２）〜（５）において、前記発光体はその発光部が反射材側を向いて配置されている。
（７）請求項８及び前記技術的思想（２）〜（６）において、前記発光体はＬＥＤである。
【００６５】
【発明の効果】
以上詳述したように本発明によれば、斜め位置から透光部材の内側を見たときに映込部材によって隠れる位置に発光体を配置したので、外側から信号灯具の内部を見ても発光体が映込部材に隠れて見え難くなり、消灯時における信号灯具の通常色がほぼ単一色に見える。
【図面の簡単な説明】
【図１】一実施形態におけるストップランプの内部を示す模式斜視図。
【図２】図１のＩＩ−ＩＩ線断面図。
【図３】車両を後方から見た模式斜視図。
【図４】別例におけるストップランプの部分拡大模式断面図。
【図５】他の別例におけるストップランプの部分拡大模式断面図。
【図６】従来の車両用信号灯具の模式断面図。
【符号の説明】
３…信号灯具としてのストップランプ、７…被取付部としての車体、１１…透光部材としてのレンズ、１２…反射材としてのリフレクタ、１３…発光体としてのＬＥＤ、１３ａ…発光部、１４…映込部材としてのエクステンション、１４ａ…本体部、１６ａ…反射面、２１…延出部を構成する平板部、２２…延出部を構成する底部、２１ｂ，２２ｂ…表面、Ｃ１…反射光。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a signal lamp for projecting a predetermined color according to an operation content of an operator and a reflection structure of the signal lamp.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, vehicles are equipped with vehicle lamps such as tail / stop lamps, rear turn signal lamps, and backup lamps. An example of this type of vehicular lamp is disclosed in Patent Document 1, for example, and FIG. 6 is a longitudinal sectional view of the vehicular lamp 51. The vehicular lamp 51 is a lamp in which the color seen when turned off (hereinafter referred to as a normal color) and the color seen when turned on (hereinafter referred to as a functional color) are different from each other.
[0003]
The vehicular lamp 51 includes a lamp housing 52 and a colorless and transparent outer lens 53 that covers the front opening of the lamp housing 52. A diffusion optical element group 54 that diffuses light in one direction (left-right direction) is provided on the inner surface of the outer lens 53. Have been. Inside the lamp housing 52, a light source bulb 56 surrounded by a red transparent color cap 55 and a reflection surface 57 for reflecting light from the light source bulb 56 toward the outer lens 53 are arranged.
[0004]
A colorless and transparent inner lens 58 is disposed between the outer lens 53 and the light source bulb 56, and a diffusion optical element group 59 for diffusing light in one direction (up and down) is provided on the outer surface thereof. On the inner surface of the inner lens 58, a blue opaque portion 60 is provided in a portion outside a range where light incident on the diffusion optical element group 59 is refracted and emitted. The opaque portion 60 is made of a material that can provide a high-luminance metallic blue color, and is formed by, for example, printing, hot stamping, painting, multicolor molding, or the like.
[0005]
Here, when the vehicular lamp 51 is viewed at the position E1 parallel to the optical axis ZZ when the vehicular lamp 51 is turned off, the extraneous light (line of sight) W1 is parallel to the optical axis ZZ and is a diffusion optical element group 59. And is refracted in the vertical direction by the diffusing optical element group 59 and enters the inside of the inner lens 58. At this time, the light that has entered the inside of the inner lens 58 passes through a portion without the opaque portion 60, and as a result, the inner lens 58 looks colorless to a person who views the vehicle lamp 51 at the position E1.
[0006]
When the viewing angle (viewing direction) when the vehicular lamp 51 is turned off is changed to the position E2 in the diffusion direction (vertical direction) of the diffusion optical element group 59, the external light (line of sight) W2 is obliquely downward from the diffusion optical element group. The light enters the opaque portion 59 while being refracted vertically by the diffusing optical element group 59. Therefore, when the vehicle lamp 51 is turned off, the person viewing the inner lens 58 from the position E2 looks blue, and thus the vehicle lamp 51 can obtain a colorless or blue normal color when the vehicle lamp 51 is turned off.
[0007]
On the other hand, when the vehicular lamp 51 is turned on, the light from the light source bulb 56 passes through the color cap 55, and at this time, the light colored red is diffused and transmitted through the inner lens 58 and is radiated to the outside. A red functional color is obtained. Further, among the light emitted from the light source bulb 56, the light that reaches the opaque portion 60 is not emitted from the inner lens 58, so that only the light diffused and transmitted through the inner lens 58 is irradiated, and a turbid red functional color is obtained. .
[0008]
[Patent Document 1]
JP-A-2000-71862 (pages 3-5, FIG. 1)
[0009]
[Problems to be solved by the invention]
However, in the vehicular lamp 51 described in the related art, the normal color seen when the lamp is turned off is two colors that appear colorless or blue depending on the viewing angle. Therefore, even if the vehicle lamp 51 is configured to be seen in different colors when the lamp is turned off and when it is turned on, two colors, colorless and blue, are displayed when the lamp is turned off. Even if it is desired to match the color of the vehicle body 51 with the same color, there has been a problem that this cannot be realized.
[0010]
Further, in Patent Document 1, even when external light such as sunlight is incident upon turning off the light, the external light is attenuated while passing through the outer lens 53 and the inner lens 58, and the incident light is reflected by the color cap 55. It is described that the light is attenuated by both lenses 53 and 58 so that the color of the color cap 55 cannot be seen. However, since the light source bulb 56 is disposed immediately after the inner lens 58, a shadow of the light source bulb 56 is reflected on the lens 58, which also hinders the vehicle lamp 51 from being monochromatic when turned off. I was
[0011]
The present invention has been made in view of the above-described problems, and its object is to provide a signal lamp and a normal color that can be seen when turned off and a functional color that can be seen when turned on, respectively. An object of the present invention is to provide a reflecting structure of a signal light.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, a luminous body that emits light of a predetermined color, a reflecting material that reflects the light of the luminous body, and a color different from a color when the luminous body is turned on And a light-transmitting member that covers the light-emitting body, the reflector, and the light-emitting member from outside and transmits the reflected light of the reflector, and a predetermined angle. The luminous body was arranged at a position hidden by the projection member when the inside of the translucent member was viewed from the oblique position provided.
[0013]
According to the present invention, when the light emitter is turned on (blinks), a color (functional color) based on the light emitter is obtained, and when the light emitter is turned off, a color different from the functional color reflected on the reflector is obtained. The color (normal color) of the projection member is obtained. In addition, since the luminous body is located at a position that is hidden by the projection member when viewing the inside of the light-transmitting member from an oblique position, the luminous body is hidden behind the projection member even when viewing the inside of the signal light from outside. It becomes difficult. Therefore, for example, even if the light-emitting portion of the light-emitting body is colored, the signal light at the time of turning off the light looks like a substantially normal color of the light-emitting portion, and the signal lamp at the time of turning off can be made a single color.
[0014]
According to a second aspect of the present invention, in the first aspect of the present invention, the projection member includes an extending portion located closer to the light transmitting member than the luminous body, and the luminous body is formed of the extending portion. The reflection member is disposed on the side of the reflection member that is separated from the reflection surface. According to the present invention, since the luminous body is arranged on the side away from the reflecting surface of the reflecting member with respect to the surface of the extension portion forming a part of the projection member, if the distance is widened, the signal is increased. The luminous body becomes more difficult to see when looking inside the lamp.
[0015]
According to a third aspect of the present invention, in the first or second aspect of the present invention, the reflecting surface of the reflecting material is directed downward at a predetermined angle when the reflecting surface is attached to the attached portion. According to this invention, in addition to the effect of the invention described in claim 1 or 2, the reflecting surface of the reflecting material is directed downward with a predetermined angle when attached to the mounting portion, so that the reflecting surface is It is possible to reflect the color of the projection member on the reflection material without reflecting light or the like.
[0016]
According to a fourth aspect of the present invention, in the second or third aspect of the invention, the extending portion is formed integrally with the main body of the projection member. According to this invention, in addition to the effect of the invention described in claim 2 or 3, since the extension portion is formed integrally with the projection member, for example, the main body of the projection member and the extension portion are separated. The number of steps of assembling the parts to be mounted is reduced as compared with the case of parts, and the work of the assembling steps becomes easier.
[0017]
In the invention described in claim 5, in the invention described in any one of claims 2 to 4, a plurality of the light-emitting bodies and the reflection material are formed in pairs, and among the adjacent pairs, The other set of the reflecting members is arranged on the inner surface side of the extension part of one set. According to this invention, in addition to the effect of the invention described in any one of claims 2 to 4, since a plurality of light emitters and reflectors are formed in pairs, a plurality of light sources exist. As a result, high-luminance light can be emitted from the signal lamp.
[0018]
In the invention described in claim 6, in the invention described in any one of claims 1 to 5, the light-emitting body is arranged such that a light-emitting portion faces a reflective material side. According to this invention, in addition to the function of the invention described in any one of the first to fifth aspects, the luminous body has the luminous portion facing the reflective material side, so that the luminous body emits light from the luminous portion. Since the number of times of reflection by the reflecting material can be reduced and the path length of light can be shortened, high-luminance light can be emitted from the signal lamp.
[0019]
In the invention described in claim 7, in addition to the function of the invention described in any one of claims 1 to 7, the luminous body is an LED. According to this invention, in addition to the effect of the invention described in any one of claims 1 to 7, since the LED is smaller than, for example, a light source bulb or the like, the use of the LED as the light emitter further increases the light emitter. It becomes harder to see and further contributes to a single color of the signal light when turned off.
[0020]
In the invention according to claim 8, when the illuminant is turned on, the light is reflected by a reflector, and the reflected light is radiated to the outside via a light transmitting member covering the illuminator and the reflector. When the light-emitting body is turned off, the color of the projection member arranged in parallel to the light-emitting body is reflected on the reflecting material to project a color different from the light-emitting body, and from a diagonal position having a predetermined angle. The light emitter was arranged at a position hidden by the projection member when the inside of the light transmitting member was viewed. According to this invention, the same operation as the first aspect is obtained.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment in which the present invention is embodied in a vehicle signal lamp will be described with reference to FIGS.
[0022]
FIG. 3 is a schematic perspective view of the vehicle 1 as viewed from the rear. A pair of left and right rear lamps (combination lamps) 2 are disposed on the back of the vehicle 1. The rear lamp 2 is configured by combining a stop lamp 3, a turn signal lamp 4, a backup lamp 5, and a tail lamp 6 as signal lamps in this order from the upper side of FIG. On the back surface of the vehicle body 7 as a mounted portion, a discoloring portion 8 having a different color (black in this example) from the other portions is provided, and stop lamps 3 are arranged at both ends of the discoloring portion 8.
[0023]
The rear lamp 2 has a light source bulb 4a for a turn signal lamp 4 having a yellow cap mounted therein, a light source bulb 5a for a backup lamp 5 that emits white light, and a light source bulb for a tail lamp 6 having a red cap mounted. 6a. The turn signal lamp 4 blinks yellow light when turning the vehicle, the backup lamp 5 lights white light when moving backward, and the tail lamp 6 lights red light when turning on the headlights.
[0024]
FIG. 1 is a schematic perspective view showing the inside of the stop lamp 3, and FIG. 2 is a sectional view taken along line II-II in FIG. The rear lamp 2 includes a housing 9 that is assembled to a vehicle body 7 (see FIG. 1). The housing 9 is provided with a lens 11 as a colorless and transparent light transmitting member so as to cover the opening 10. Inside the housing 9, in addition to the light source bulbs 4 a to 6 a, a reflector 12, an LED 13, and an extension 14 constituting the stop lamp 3 are housed.
[0025]
The rear lamp 2 is made up of a reflector 12 and an LED 13 which are opposed to each other, and in this example, the rear lamp 2 is made up of nine light emitting units. The light emitting units are arranged so as to form a plurality of stages (three stages in this example) in the vertical direction in the figure. Two sets of light emitting units are arranged in the second row and one set in the third row. Further, when the light emission units are arranged in columns, and the first to third columns are arranged in order from the left side of the drawing, three pairs are arranged in the first column, two pairs are arranged in the second column, and one pair is arranged in the third column. .
[0026]
The reflectors 12 (LEDs 13) are displaced so that the second stage is located on the front side of the first stage and the third stage is located on the front side of the second stage. Further, the reflectors 12 (LEDs 13) are arranged so as to be shifted so that the second row is located on the front side from the first row, and the third row is located on the front side from the second row. The reflector 12 corresponds to a reflecting material, the LED 13 corresponds to a light emitter, and the extension 14 corresponds to a projection member.
[0027]
As shown in FIG. 2, the reflector 12 has a curved shape such that the surface thereof is curved, and includes a plastic main body 15 and a reflector 16 disposed on the surface of the main body 15. . The reflecting portion 16 is formed by aluminum evaporation, and is arranged over substantially the entire surface of the main body 15. When the line of sight when the stop lamp 3 is viewed from directly behind is the horizontal axis L, the reflector 12 is configured such that the angle θa between the reflection surface 16a of the reflection section 16 and the horizontal axis L is a predetermined acute angle. Are arranged downward.
[0028]
The LEDs (light emitting diodes) 13 are respectively arranged at positions below the reflector 12. The LED 13 emits red light, and the LED 13 is arranged on the substrate 17 with the light emitting portion 13a facing the reflector 12 (upward in FIG. 2). When a brake operation is performed in the driving operation of the vehicle 1, the LED 13 emits red light toward the reflector 12, and the red light is reflected to the rear side by the reflection surface 16 a of the reflector 12, so that the reflected light is transmitted to the lens. Then, the light is transmitted to the outside through the light source 11.
[0029]
A bracket 18 for assembling the substrate 17 is provided at a position facing the reflection surface 16a of the reflector 12. The board 17 is fixed to the back surface of the bracket 18 by inserting a screw 19 into an insertion hole 17 a of the board 17 and screwing a screw 19 into a screw hole 18 b provided in an assembly portion 18 a of the bracket 18. A substantially circular hole 18 c for exposing the LED 13 on the substrate 17 to the upper surface side of the bracket 18 is formed in the center of the bracket 18.
[0030]
Each of the first and second reflectors 12 of the plurality of reflectors 12 is provided with a support portion 15a projecting from the rear surface thereof so as to extend in the left-right direction. The second-stage and third-stage brackets 18 are in a state where the end opposite to the mounting portion 18a is placed on the upper surface of the support portion 15a. The reflector 12 has a screw hole 15b formed on the back surface of the lower end, and is screwed into the screw hole 15b by inserting a screw 20 into an insertion hole 18d provided at the tip of the assembly portion 18a, and is assembled to the bracket 18. .
[0031]
As shown in FIG. 1, the extension 14 has a space inside according to the shape of the housing 9 and has a shape in which the rear side is opened. The extension 14 is made of a resin such as plastic, for example, and the entire surface is colored black. The extension 14 is formed in a shape surrounding the periphery of each reflector 12.
[0032]
More specifically, a substantially plate-shaped flat plate portion 21 protruding toward the rear side is integrally formed on the main body portion 14a of the extension 14 at a position above the first-stage and second-stage reflectors 12. Therefore, the lower reflector 12 is located below the inner surface of the upper flat plate portion 21. The bottom portion 22 (see FIG. 1) and the flat plate portion 21 of the extension 14 are arranged so as to form a step. The flat plate portion 21 and the bottom portion 22 are arranged horizontally with respect to the LED 13 in the same stage, and cutout portions 21a and 22a are formed at the end on the LED 13 side to secure a light irradiation path of the LED 13. .
[0033]
Further, a wall portion 23 for covering the reflector 12 from the side is integrally formed on the main body portion 14a of the extension 14 for each row. The flat plate portion 21, the bottom portion 22, the wall portion 23, and the inner wall surface 24 of the extension 14 function as members that reflect their own color on the reflection surface 16 a of the reflector 12 when the LED 13 is turned off. Therefore, when the extension 14 is black, the black is reflected on the reflector 12, so that the stop lamp 3 when turned off appears black. In addition, the flat plate part 21 and the bottom part 22 constitute an extension part.
[0034]
As shown in FIG. 2, the LED 13 is disposed below the surface 21 b of the flat plate portion 21, and in this example, is disposed below the height position of the surface 21 b by a distance H. The distance H is set to a distance at which the LED 13 cannot be seen even when looking inside the stop lamp 3 from obliquely above the horizontal axis L. Although not shown, the LED 13 located on the bottom portion 22 side is also disposed below the height position of the surface 22b by a distance H similarly to the flat plate portion 21.
[0035]
When the viewing position P looking into the inside of the rear lamp 2 is obliquely above the horizontal axis L, the LED 13 is a line of sight connecting the viewing position P and the end 25 of the flat plate portion 21 (bottom portion 22) on the LED 13 side. It can also be said that the state is located below the route R. Therefore, when the angle formed by the horizontal axis L and the path S connecting the top and the end 25 of the light emitting unit 13a is the maximum angle θmax, the angle θb when looking into the stop lamp 3 from obliquely above is the maximum angle. This is a structure in which the LED 13 cannot be seen in a range not exceeding θmax.
[0036]
As a procedure for attaching the extension 14, first, the board 17 on which the LED 13 is mounted is attached to the bracket 18 with the screw 19, and after the board 17 is attached, the bracket 18 is attached to the reflector 12 by the screw 20 for each row. Then, the reflectors 12 are fixed to the housings 9 for each row by screws (not shown), and the extensions 14 are attached thereto, whereby the stop lamp 3 is assembled.
[0037]
Next, the operation of the stop lamp 3 configured as described above will be described.
When the driver gets into the vehicle 1 and performs a brake operation to turn on the LED 13, the red light of the LED 13 is emitted toward the reflection surface 16 a of the reflector 12. The light from the LED 13 is reflected by the reflector 12 toward the rear side, and the reflected light C1 is transmitted to the outside through the transparent lens 11. Accordingly, the stop lamp 3 looks red, and it is informed that the following vehicle is depressed.
[0038]
On the other hand, when the LED 13 is turned off, the black color of the extension 14 is reflected on the reflector 12, and the stop lamp 3 appears almost black as a whole due to the reflection effect. For example, when the stop lamp 3 is viewed from above, black on the surface 21b of the flat plate portion 21 (bottom portion 22) is reflected on the reflection surface 16a of the reflector 12, and the reflected black is reflected on the rear side as a reflection color C2. It is. When the stop lamp 3 is viewed from an oblique position in the left-right direction, the black color of the wall portion 23 and the inner wall surface 24 is reflected on the reflector 12, and the stop lamp 3 looks black.
[0039]
By the way, when the LED 13 inside the lamp is seen from the outside of the lens 11, the color (red) of the LED 13 itself is seen, thereby preventing the stop lamp 3 from being monochromatic when the light is turned off. However, in this example, since the LED 13 is disposed on the lower side by the distance H with respect to the surfaces 21b and 22b of the flat plate portion 21 and the bottom portion 22 of the extension 14, it becomes difficult to see the LED 13 from outside the lens 11, and The stop lamp 3 looks almost black as a whole.
[0040]
Further, if the reflector 12 is arranged so that the reflection surface 16a faces upward, the sunlight is reflected by the reflection surface 16a, so that the black color of the extension 14 is not reflected, which hinders a single color when the light is turned off. However, in this example, since the reflection surface 16a of the reflector 12 is disposed at an angle θa so as to face downward, the reflection surface 16a does not reflect sunlight, and the black of the extension 14 can be reflected on the reflection surface 16a. This allows the stop lamp 3 when turned off to be easily viewed as a single black color.
[0041]
In this example, since the flat plate portion 21 and the bottom portion 22 are provided on the extension 14 and the LED 13 is disposed below the height position of the surfaces 21b and 22b by the distance H, the LED 13 is viewed from the outside when the stop lamp 3 is viewed. Are difficult to see, and the stop lamp 3 can be made a single color when turned off. Further, since the reflector 12 is arranged so that the reflection surface 16a faces downward, the black color of the extension 14 can be reflected on the reflector 12 without being disturbed by sunlight or the like. It further contributes to one color.
[0042]
Therefore, in this embodiment, the following effects can be obtained.
(1) Since the flat plate portion 21 and the bottom portion 22 are provided on the extension 14, and the LED 13 is disposed at a distance H below the surfaces (upper surfaces) 21b and 22b of the flat plate portion 21 and the bottom portion 22, the stop lamp is provided from the outside. The LED 13 is hidden by the flat plate portion 21 and the bottom portion 22 even when looking at the inside of 3, making it difficult to see. Therefore, for example, even when the light emitting portion 13a of the LED 13 is colored red, the stop lamp 3 looks almost black when the LED 13 is turned off, and the stop lamp 3 can be made a single color when turned off.
[0043]
(2) Since the reflector 12 is disposed at an angle θa so that the reflection surface 16a faces downward, the reflection surface 16a is unlikely to reflect sunlight, and accordingly, the black color of the extension 14 is applied to the reflection surface 16a. It can be reflected. Therefore, it is possible to make the stop lamp 3 at the time of extinguishing visible as almost one color black.
[0044]
(3) Since the flat plate portion 21 and the wall portion 23 are integrally formed with the main body portion 14a of the extension 14, for example, the housing 9 is compared with a case where the flat plate portion 21 and the wall portion 23 are separate components from the main body portion 14a. The number of assembling steps can be reduced, and the work of the assembling step becomes easier.
[0045]
(4) Since a plurality of reflectors 12 and LEDs 13 are formed in pairs, a plurality of light emitting sources are present, and high-intensity light can be emitted from the stop lamp 3.
[0046]
(5) The red light emitted from the LED 13 is reflected by the reflector 12 and immediately passes through the lens 11 to be emitted to the outside. Accordingly, since the light does not pass through the relatively thick inner lens 58 (see FIG. 6) for reflecting the color when the light is turned off, light attenuation is reduced, and as a result, high-luminance light is stopped. Irradiation from the lamp 3 is possible.
[0047]
(6) Since the LED 13 is smaller than, for example, a light source bulb or the like, even if the stop lamp 3 is viewed from the outside, the LED 13 is hard to be seen, which further contributes to a single color of the stop lamp 3 when turned off.
[0048]
(7) Since the lower reflector 12 is disposed below the inner surface of the upper flat plate portion 21, the flat plate portion 21 functions as a member for reflecting its own color when the light is turned off in the upper stage, and the sunlight is reflected in the lower stage. Takes the function of eaves that block the sun. Accordingly, two functions can be satisfied by one flat plate portion 21, and the number of components can be reduced.
[0049]
The embodiment is not limited to the above, and may be changed to, for example, the following mode.
The LED 13 is not limited to the position where the light emitting unit 13a faces the reflection surface 16a of the reflector 12. For example, as shown in FIG. 4, the LED 13 is arranged so that the light emitting portion 13a faces downward, the reflector 12 (reflection surface 16a) is made semicircular, and light from the LED 13 is reflected by the reflection surface 16a a plurality of times. Alternatively, a configuration in which the light is irradiated to the outside may be used.
[0050]
The reflector 12 is not limited to the reflection surface 16a facing downward, and may have a configuration in which the reflection surface 16a faces upward as shown in FIG. 5, for example. In this case, the flat plate portion 21 of the extension 14 facing the reflection surface 16a needs to have a sufficient length so that sunlight does not enter the reflector 12.
[0051]
The direction of the reflection surface 16a of the reflector 12 is not limited to upward or downward. For example, by rotating around a vertical axis or a horizontal axis shown in FIG.
[0052]
The signal lamp is not limited to the stop lamp 3, but may be another lamp such as a turn signal lamp 4, a backup lamp 5, and a tail lamp 6. Further, the rear lamp 2 is not limited to the configuration in which the various lamps 3 to 6 are integrated, but may be each separately, or may be a configuration in which predetermined lamps are combined.
[0053]
The signal lamp is not limited to the stop lamp 3 and the various lamps 4 to 6 described in the embodiment, but may be used for, for example, a head lamp or a front-side turn signal lamp. The lens 11 is not limited to colorless and transparent, but may be colored and transparent such as red and yellow.
[0054]
The extension 14 is not limited to the flat plate portion 21 and the wall portion 23 being integral with the main body portion 14a, but may be configured such that the flat plate portion 21 and the wall portion 23 are separate from the main body portion 14a. Further, the shape of the extension 14 is not limited to the shape having the flat plate portion 21 and the wall portion 23, and any shape may be used as long as the LED 13 can reflect its own color on the reflector 12 when the LED 13 is turned off, so that the LED 13 is difficult to see.
[0055]
The reflector 12 is not limited to the configuration in which the reflection surface 16a is formed by aluminum deposition, but may be, for example, a configuration formed by silver coating.
The extension 14 is not limited to black, and may be gray, yellow, blue, green, or the like according to the vehicle body color of the vehicle 1, and the color is not particularly limited.
[0056]
The emission color of the LED 13 is not limited to red, but may be yellow or white, and the emission color is not particularly limited. Further, the light emitting body is not limited to the LED 13, and for example, a light emitting bulb may be used.
[0057]
(Circle) the distance H between the surface 21b (22b) of the flat plate part 21 (bottom part 22) and the light emitting part 13a may be changed suitably. Further, the maximum angle θmax at which the LED 13 cannot be seen when the stop lamp 3 is viewed from above may be appropriately changed.
[0058]
The extending portion is not limited to the flat plate portion 21 and the bottom portion 22 but may be, for example, a block shape or a bent shape, and the shape is not particularly limited as long as the shape hides the LED 13.
[0059]
The number of pairs of the reflector 12 and the LED 13 is not limited to nine, and may be a number other than nine, such as one, ten, or twenty.
The signal light is not limited to being mounted on the vehicle 1 and is not particularly limited as long as it needs to light (blink) a signal according to the operation of a driver such as an electric device or a robot.
[0060]
The technical ideas that can be grasped from the embodiment and other examples will be described below together with their effects.
(1) In claim 1 to 7, below a line of sight connecting a visual position when the translucent member is viewed obliquely with a predetermined inclination and an end of the projection member on the light emitting body side. The luminous body was arranged in the above.
[0061]
(2) In Claim 8, the projection member is provided with an extension on the light-transmitting member side of the illuminant, and the illuminant is a reflection surface of the reflection material with respect to a surface of the extension. It is located on the side away from the.
[0062]
(3) In claim 8 and the technical concept (2), the reflecting surface of the reflecting material is downwardly directed at a predetermined angle when the reflecting surface is attached to the attached portion.
(4) In the technical ideas (2) and (3), the extension is integrally formed with the main body of the projection member.
[0063]
(5) In the technical ideas (2) to (4), a plurality of the luminous bodies and the reflective material are formed in pairs, and an inner surface of the extension portion of one of adjacent pairs. The other set of said reflectors is arranged on the side.
[0064]
(6) In claim 8 and the technical ideas (2) to (5), the luminous body is arranged such that a luminous portion thereof faces the reflective material side.
(7) In claim 8 and the technical ideas (2) to (6), the luminous body is an LED.
[0065]
【The invention's effect】
As described in detail above, according to the present invention, the luminous body is arranged at a position that is hidden by the projection member when viewing the inside of the light transmitting member from an oblique position. The body is hidden by the projection member, making it difficult to see, and the normal color of the signal lamp at the time of turning off the light looks almost single color.
[Brief description of the drawings]
FIG. 1 is a schematic perspective view showing the inside of a stop lamp according to an embodiment.
FIG. 2 is a sectional view taken along line II-II of FIG.
FIG. 3 is a schematic perspective view of the vehicle as viewed from the rear.
FIG. 4 is a partially enlarged schematic cross-sectional view of a stop lamp in another example.
FIG. 5 is a partially enlarged schematic cross-sectional view of a stop lamp in another example.
FIG. 6 is a schematic cross-sectional view of a conventional vehicle signal lamp.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 3 ... Stop lamp as a signal lamp, 7 ... Vehicle as an attachment part, 11 ... Lens as a translucent member, 12 ... Reflector as a reflector, 13 ... LED as a light emitter, 13a ... Light emitting part, 14 ... Extension as a projection member, 14a: body portion, 16a: reflection surface, 21: flat plate portion forming an extension portion, 22: bottom portion forming an extension portion, 21b, 22b: surface, C1: reflected light.

Claims

A luminous body that emits light of a predetermined color, a reflector that reflects the light of the luminous body, and a projection member that reflects the color of the luminous body that is different from the color when the luminous body is turned on to the reflective material when the light is turned off. A light-transmissive member that covers the light-emitting body, the reflective material and the projection member from outside, and transmits the reflected light of the reflective material,
A signal lamp in which the luminous body is arranged at a position hidden by the projection member when the inside of the light transmitting member is viewed from an oblique position having a predetermined angle.

The projection member includes an extension located closer to the light-transmitting member than the light-emitting body, and the light-emitting body is disposed on a side of the surface of the extension that is separated from the reflection surface of the reflection material. The signal lamp according to claim 1.

The signal lamp according to claim 1, wherein the reflecting surface of the reflecting material is directed downward with a predetermined angle when the reflecting surface is attached to the attached portion.

The signal lamp according to claim 2, wherein the extension is integrally formed with a main body of the projection member.

The said light-emitting body and the said reflective material are each formed in pairs and a plurality is formed, and the other set of said reflective materials is arrange | positioned at the inner surface side of the said extended part of one set among adjacent sets. The signal light according to any one of 2 to 4.

The signal light according to any one of claims 1 to 5, wherein the light-emitting body has a light-emitting portion facing the reflective material side.

The signal light according to claim 1, wherein the light emitter is an LED.

When the light emitter is turned on, the light is reflected by a reflector, and the signal light is a reflection structure for irradiating the reflected light to the outside via a light transmitting member that covers the light emitter and the reflector.
When the light-emitting body is turned off, the color of the projection member arranged in parallel with the light-emitting body is reflected on the reflecting material to project a color different from that of the light-emitting body, and the light-transmitting member is obliquely positioned at a predetermined angle. The reflection structure of a signal lamp in which the luminous body is arranged at a position where the luminous body is hidden by the projection member when viewing the inside of the light emitting device.