JP2019197730A - 自動車用照明及び/又は信号装置 - Google Patents
自動車用照明及び/又は信号装置 Download PDFInfo
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- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
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- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
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- F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
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- G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
- G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
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Abstract
Description
1)好ましくは50°未満である第1の角度αを形成する光線を偏向/屈折させるよう形成された第1の下部ストレッチ80であって、それにより光線は、光出射壁32の円すい部68に影響して、光入射拡散壁28と光出射壁32により画定される導光体24の部分に沿って全内反射により円すい部分によって反射される、第1の下部ストレッチ80と、
2)第1の下部ストレッチ80に隣接する第2の下部ストレッチ88であって、第1の角度αより大きく、かつ81°未満である第2の角度βより小さい角度で放出される光線を、円すい部68に隣接する光出射壁32の一部に向けるよう構成され、それにより光線は、光入射拡散壁28と光出射壁32により画定される導光体24の部分に沿った全反射により反射される、第2の下部ストレッチ88と、
3)この第2の下部ストレッチ88に隣接する第3の下部ストレッチ92であって、第2の下部ストレッチ88から屈折した光線を反射しないよう構成された第3の下部ストレッチ92と
を有する。
Claims (21)
- 照明及び/又は信号装置(4)であって、
光ビームを受けて拡散するよう構成された光入射拡散壁(28)から、前記照明及び/又は信号装置(4)の照明部分(36)を形成する光出射壁(32)まで延在する導光体(24)と、
主光軸(X−X)に沿って光ビームを放出するよう構成された少なくとも1つのLED光源(16)であって、前記LED光源(16)によって放出された前記光ビームを受けるよう構成された前記光入射拡散壁(28)の光放出部(40)と対向している少なくとも1つのLED光源(16)と
を有する照明及び/又は信号装置(4)において、
前記光入射拡散壁(28)と前記光出射壁(32)とは前記主光軸(X−X)に沿って互いに反対を向いており、
前記照明部分(36)は、前記LED光源(16)及び前記光放出部(40)と位置合わせされた中央照明部分(44)と、前記中央照明部分(44)を取り囲む周辺照明部分(48)とを有し、
前記導光体(24)は、前記光入射拡散壁(28)に配置された複数の抽出要素(52)を有し、
前記装置(4)は、前記導光体(24)の前記光入射拡散壁(28)に関連付けられた少なくとも1つの反射要素(56)であって、前記光出射壁(32)に向かって光を反射するようにそれぞれの前記抽出要素(52)に直接対向している少なくとも1つの反射要素(56)を有し、
前記照明部分(36)を覆うように前記光出射壁(32)側に拡散層(60)が配置され、
前記光出射壁(32)上の前記中央照明部分(44)に円筒光学系(64)が設けられ、それにより、そこに入射する光ビームを前記拡散層(60)の方へ抽出する、
照明及び/又は信号装置(4)。 - 前記円筒光学系(64)は、前記LED光源(16)の前記主光軸(X−X)に関して互いに同心の円筒経路である、請求項1に記載の照明及び/又は信号装置(4)。
- 前記光出射壁(32)の前記円筒光学系(64)は、前記照明部分(36)上の全体に亘って光強度が均一な光線を抽出するように、前記光入射拡散壁(28)上の前記抽出要素(52)に関連して構成されている、請求項1又は2に記載の照明及び/又は信号装置(4)。
- 前記拡散層(60)は、前記中央照明部分(44)と前記周辺照明部分(48)の両方で均一な光強度を得るように、前記照明部分(36)に入射する光線の光強度に応じて差別化された透過率を有している、請求項1から3までのいずれか一項に記載の照明及び/又は信号装置(4)。
- 前記拡散層(60)は、前記照明部分(36)でより大きな光を有する入射光線のところにより低い透過率を、また前記照明部分(36)でより小さい光強度を有する入射光線のところにより高い透過率を有する、請求項1から4までのいずれか一項に記載の照明及び/又は信号装置(4)。
- 前記拡散層(60)は、前記中央照明部分(44)のところにより低い透過率を、また前記周辺照明部分(48)のところにより高い透過率を有する、請求項4又は5に記載の照明及び/又は信号装置(4)。
- 前記拡散層(60)はオパリン層を有し、透過率変化が、前記LED光源(16)の主光軸(X−X)に平行な断面に関して前記オパリン層の厚さ(S)を変化させることによって得られる、請求項4、5又は6に記載の照明及び/又は信号装置(4)。
- 前記オパリン層の厚さ(S)は、前記中央照明部分(44)でより大きく、前記周辺照明部分(48)でより小さい、請求項7に記載の照明及び/又は信号装置(4)。
- 前記拡散層(60)はエンボス層を有し、透過率変化が、前記LED光源(16)の主光軸(X−X)に平行な断面に関して前記エンボス層のエンボス密度及び/又は厚さ(S)及び/又は粗さを変化させることによって得られる、請求項1から8までのいずれか一項に記載の照明及び/又は信号装置(4)。
- 前記エンボス層の厚さ(S)、並びに/或いは前記エンボスの密度及び/又は粗さは、前記中央照明部分(44)でより大きく、前記周辺照明部分(48)でより小さい、請求項9に記載の照明及び/又は信号装置(4)。
- 前記拡散層(60)はシルクスクリーン印刷層を有し、透過率変化が、前記シルクスクリーン印刷層の異なるパターンによって得られる、請求項1から10までのいずれか一項に記載の照明及び/又は信号装置(4)。
- 前記光放出部(40)は、前記LED光源(16)に向かって凹面を有し、前記中央照明部分(44)は、前記LED光源(16)の前記主光軸(X−X)に関して軸対称な円すい部(68)であって、前記光放出部(40)に対向しかつ前記LED光源(16)と整列された頂点を有する円すい部(68)を有する、請求項1から11までのいずれか一項に記載の照明及び/又は信号装置(4)。
- 前記拡散層60は、平担な周辺部(72)と、前記導光体(24)の前記円すい部(68)に関して逆形状とされた円すい形の中央突起部(76)とを有する、請求項12に記載の照明及び/又は信号装置(4)。
- 前記光入射拡散壁(28)は、前記LED光源(16)の前記主光軸(X−X)に平行な断面に関して、
第1の角度(α)を形成する光線を偏向/屈折させるように形状された第1の下部ストレッチ(80)であって、それにより光線は前記光出射壁(32)の前記円すい部(68)に影響し、かつ前記光入射拡散壁(28)と前記光出射壁(32)により画定される前記導光体(24)の部分に沿って全内反射によって前記円すい部(68)により反射され得る、第1の下部ストレッチ(80)と、
前記第1の下部ストレッチ(80)に隣接する第2の下部ストレッチ(88)であって、前記第1の角度(α)より大きくかつ第2の角度(β)より小さい角度で放出される光線を方向付けるように構成され、それにより光線は、前記光入射拡散壁(28)と前記光出射壁(32)により画定される前記導光体(24)の一部に沿って反射され得る、第2の下部ストレッチ(88)と、
前記第2の下部ストレッチ(88)に隣接する第3の下部ストレッチ(92)であって、前記第2の下部ストレッチ(88)から屈折した光線を反射しないように構成された第3の下部ストレッチ(92)と
を有している、請求項1から13までのいずれか一項に記載の照明及び/又は信号装置(4)。 - 前記抽出要素(52)は、前記第3の下部ストレッチ(92)に隣接する第4の下部ストレッチ(96)から配置されている、請求項14に記載の照明及び/又は信号装置(4)。
- 前記抽出要素(52)は、前記光を前記光出射壁(32)及び/又は前記反射要素(56)に向かって拡散させるマイクロ光学系である、請求項1から15までのいずれか一項に記載の照明及び/又は信号装置(4)。
- 前記抽出要素(52)は不均一パターンに従って配置され、前記不均一パターンは、前記主光軸(X−X)に垂直な平面内に含まれかつ前記抽出要素(52)に入射する、対応する前記LED光源(16)からの径方向(R)に沿った距離が大きくなるにつれて増大する密度を有している、請求項1から16までのいずれか一項に記載の照明及び/又は信号装置(4)。
- 前記反射要素(56)は、前記導光体(24)の前記光入射拡散壁(28)からの光を反射する白色フィルム又はミラーである、請求項1から17までのいずれか一項に記載の照明及び/又は信号装置(4)。
- 請求項1から18までのいずれか一項に記載の照明及び/又は信号装置(4)を複数有する照明及び/又は信号モジュール(104)であって、
相互に隣接する装置(4’、4’’)の前記照明部分(36’、36’’)が光線を通さないバリア要素(100)によって分離されている、照明及び/又は信号モジュール(104)。 - 前記装置(4’、4’’)の反射要素(56’、56’’)が、並んで配置された互いに隣接する照明装置(4’、4’’)においてバリア要素(100’、100’’)としても機能する、請求項19に記載の照明及び/又は信号モジュール(104)。
- 前記バリア要素(100’、100’’)は、光を通さない膜及び/又は分離隔膜を有する、請求項19又は20に記載の照明及び/又は信号モジュール(104)。
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