JP2016024855A - Vehicular signal lamp - Google Patents

Vehicular signal lamp Download PDF

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JP2016024855A
JP2016024855A JP2014145857A JP2014145857A JP2016024855A JP 2016024855 A JP2016024855 A JP 2016024855A JP 2014145857 A JP2014145857 A JP 2014145857A JP 2014145857 A JP2014145857 A JP 2014145857A JP 2016024855 A JP2016024855 A JP 2016024855A
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lens
light
signal lamp
reflector
light source
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JP6385175B2 (en
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卓矢 松丸
Takuya Matsumaru
卓矢 松丸
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Stanley Electric Co Ltd
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Stanley Electric Co Ltd
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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
    • F21S43/20—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
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/237—Light guides characterised by the shape of the light guide rod-shaped
    • 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
    • F21S43/20—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
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces
    • 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
    • F21S43/20—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
    • F21S43/235—Light guides
    • F21S43/247—Light guides with a single light source being coupled into the light guide
    • 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
    • F21S43/31—Optical layout thereof
    • 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
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Planar Illumination Modules (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular signal lamp capable of allowing a light guide lens and a reflector to emit light with good efficiency with a single light source.SOLUTION: A vehicular signal lamp 1 includes: a single LED (light source) 2; a light guide lens 3 arranged along an optical axis of the LED 2; and a reflector 4 for reflecting or diffusing the light emitted from the light guide lens 3. The light guide lens 3 is configured by: a first lens 3A; and a second lens 3B connected via first and second total reflection surfaces 6, 7 on an end part of the opposite side from the light source of the first lens 3A. On the back surface of the first lens 3A, a plurality of lens cuts 3a are formed for emitting light L1 which enters the first lens 3A from the LED 2 to the front side. On an upper surface of the second lens 3B, a plurality of lens cuts 3b are formed for emitting light L2 which enters the second lens 3B via the first and second total reflection surfaces 6, 7 after entering the first lens 3A from the LED 2 downward toward the reflector 4.SELECTED DRAWING: Figure 4

Description

本発明は、単一の光源によって導光レンズとリフレクタを効率良く発光させるようにした車両用信号灯に関するものである。   The present invention relates to a vehicular signal lamp that efficiently emits light from a light guide lens and a reflector using a single light source.

例えば、車両後部の左右に配置されるテールランプ等の車両用信号灯には、従来、車幅方向に配置された複数の光源から出射される光をリフレクタによって照射方向に向けて反射させるようにしたものが使用されているが、斯かる構成を採用する車両用信号灯は、複数の光源を必要とするために部品点数が多くなってコストアップを招くという問題があった。   For example, in a vehicle signal lamp such as a tail lamp arranged on the left and right of the rear part of a vehicle, conventionally, light emitted from a plurality of light sources arranged in the vehicle width direction is reflected by a reflector toward an irradiation direction. However, the vehicular signal lamp adopting such a configuration has a problem in that it requires a plurality of light sources and increases the number of parts, resulting in an increase in cost.

そこで、特許文献１には、図９及び図１０に示す車両用信号灯が提案されている。   Therefore, Patent Document 1 proposes a vehicular signal lamp shown in FIGS. 9 and 10.

即ち、図９は特許文献１において提案された車両用信号灯の平断面図、図１０は図９のＤ−Ｄ線断面図であり、図示の車両用信号灯１０１においては、車幅方向（図９の左右方向）に延びるように配置された導光体１０３に対して、その車幅方向の端面から入射した光源１０２からの光を、その後面部から後方側（図１０の右側）へ出射する構成が採用されている。又、導光体１０３の後方側には、車幅方向に延びるリフレクタ１０４が配置されており、このリフレクタ１０４には、導光体１０３の後方側に位置する第１反射部１０４Ａと、その下方側に隣接する第２反射部１０４Ｂが設けられており、第１反射部１０４Ａには、複数の第１反射素子１０４Ａｓが車幅方向に沿って階段状に形成されている。   That is, FIG. 9 is a cross-sectional plan view of the vehicle signal lamp proposed in Patent Document 1, FIG. 10 is a cross-sectional view taken along the line DD of FIG. 9, and the vehicle signal lamp 101 shown in FIG. Of the light source 102 incident from the end face in the vehicle width direction to the rear side (right side in FIG. 10). Is adopted. In addition, a reflector 104 extending in the vehicle width direction is disposed on the rear side of the light guide body 103. The reflector 104 includes a first reflecting portion 104A located on the rear side of the light guide body 103, and a lower portion thereof. A second reflecting portion 104B adjacent to the side is provided, and a plurality of first reflecting elements 104As are formed stepwise along the vehicle width direction in the first reflecting portion 104A.

而して、リフレクタ１０４の第１反射部１０４Ａに形成された第１反射素子１０４Ａｓによって、導光体１０３の後面部から後方側へ出射した光をリフレクタ１０４の第２反射部１０４Ｂへ向けて反射させ、第２反射部１０４Ｂは、各第１反射素子１０４Ａｓからの反射光を前方へ向けて反射させるよう構成されているため、正面視において、導光体１０３の陰にならない位置に配置されたリフレクタ１０４の第２反射部１０４Ｂが略均一に光っているようにすることができる。そして、このような効果を、単一の光源１０２とリフレクタ１０４との間に単一の導光体１０３を配置するだけの簡単な構成によって得ることができる。   Thus, the first reflective element 104As formed in the first reflective portion 104A of the reflector 104 reflects the light emitted from the rear surface portion of the light guide body 103 toward the rear side toward the second reflective portion 104B of the reflector 104. The second reflecting portion 104B is configured to reflect the reflected light from the first reflecting elements 104As forward and is therefore disposed at a position that is not behind the light guide 103 in the front view. It is possible to make the second reflecting portion 104B of the reflector 104 shine substantially uniformly. Such an effect can be obtained by a simple configuration in which the single light guide 103 is disposed between the single light source 102 and the reflector 104.

特開２０１３−１６１７２９号公報JP 2013-161729 A

しかしながら、特許文献１において提案された図９及び図１０に示す車両用信号灯１０１においては、光源１０２から出射する強度の強い光をリフレクタ１０４だけに向かわせるよう制御することができないため、リフレクタ１０４を効率良く発光させることができないという問題があった。因みに、導光体１０３からリフレクタ１０４に向かう光は、導光体１０３から前面側に向かって出射する光に比べて光路長が長くてロスが大きいため、リフレクタ１０４の面を拡散面とした場合にはリフレクタ１０４が暗くなってしまう。   However, in the vehicular signal lamp 101 shown in FIG. 9 and FIG. 10 proposed in Patent Document 1, it is impossible to control the strong light emitted from the light source 102 so as to be directed only to the reflector 104. There was a problem that light could not be emitted efficiently. Incidentally, since the light traveling from the light guide 103 to the reflector 104 has a longer optical path length and a larger loss than the light emitted from the light guide 103 toward the front surface, the surface of the reflector 104 is used as a diffusion surface. In some cases, the reflector 104 becomes dark.

本発明は上記問題に鑑みてなされたもので、その目的とする処は、単一の光源で導光レンズとリフレクタを効率良く発光させることができる車両用信号灯を提供することにある。   The present invention has been made in view of the above problems, and an object thereof is to provide a vehicular signal lamp that can efficiently emit light from a light guide lens and a reflector with a single light source.

上記目的を達成するため、請求項１記載の発明は、単一の光源と、該光源の光軸に沿って配置された導光レンズと、該導光レンズから出射する光を反射又は拡散させるリフレクタを備えた車両用信号灯において、
前記導光レンズを、第１レンズと、該第１レンズの反光源側端部に第１及び第２全反射面を介して連なる第２レンズとで構成し、
前記第１レンズの背面に、前記光源から当該第１レンズに入射する光を前面側に出射させる複数のレンズカットを形成し、
前記第２レンズの上面に、前記光源から前記第１レンズに入射した後に前記第１及び第２全反射面を経て前記第２レンズに入射する光を前記リフレクタに向けて下方に出射させる複数のレンズカットを形成したことを特徴とする。 In order to achieve the above-mentioned object, the invention according to claim 1 reflects or diffuses a single light source, a light guide lens disposed along the optical axis of the light source, and light emitted from the light guide lens. In vehicle signal lights with reflectors,
The light guide lens is composed of a first lens and a second lens connected to the opposite end of the first lens through the first and second total reflection surfaces,
On the back surface of the first lens, a plurality of lens cuts for emitting light incident on the first lens from the light source to the front side is formed,
A plurality of light beams, which are incident on the second lens through the first and second total reflection surfaces after being incident on the first lens from the light source on the upper surface of the second lens, are emitted downward toward the reflector. A lens cut is formed.

請求項２記載の発明は、請求項１記載の発明において、前記第１レンズの前記光源に対向する入光面に、前記光源から出射する光軸から所定角度範囲内の光を光軸に沿って第１レンズ内を導光させる配光制御部を形成したことを特徴とする。   According to a second aspect of the present invention, in the first aspect of the invention, light within a predetermined angle range from the optical axis emitted from the light source is incident on the light incident surface of the first lens facing the light source along the optical axis. The light distribution control unit for guiding light in the first lens is formed.

請求項３記載の発明は、請求項１又は２記載の発明において、前記第２全反射面を上下２枚の４５°面で構成するとともに、両４５°面を垂直面に対して傾斜させたことを特徴とする。   According to a third aspect of the invention, in the first or second aspect of the invention, the second total reflection surface is composed of two upper and lower 45 ° surfaces, and both 45 ° surfaces are inclined with respect to a vertical surface. It is characterized by that.

本発明によれば、光源から出射する強度の強い光は、導光レンズの第１レンズ内を光軸に沿ってロスなく直進し、第１及び第２全反射面で全反射して第２レンズに入射し、第２レンズ内を進む過程で該第２レンズの上面に形成された複数のレンズカットで屈折してリフレクタに向けて下方に出射し、リフレクタで反射又は拡散するため、リフレクタが効率良く発光する。   According to the present invention, the strong light emitted from the light source travels straight through the first lens of the light guide lens without any loss along the optical axis, and is totally reflected by the first and second total reflection surfaces. In the process of entering the lens and proceeding through the second lens, the light is refracted by a plurality of lens cuts formed on the upper surface of the second lens, emitted downward toward the reflector, and reflected or diffused by the reflector. Emit light efficiently.

又、光源から出射する強度が弱くてロスの少ない光は、導光レンズの第１レンズ内を全反射しながら進む過程で第１レンズの背面に形成された複数のレンズカットによって屈折して前面側へと出射するため、導光レンズ（第１レンズ）が効率良く発光する。   In addition, light with low intensity and low loss emitted from the light source is refracted by a plurality of lens cuts formed on the back surface of the first lens in the process of total reflection inside the first lens of the light guide lens. Since the light is emitted to the side, the light guide lens (first lens) emits light efficiently.

従って、部品点数の増加やコストアップを招くことなく、単一の光源によって導光レンズとリフレクタを効率良く発光させることができる。   Therefore, the light guide lens and the reflector can efficiently emit light with a single light source without causing an increase in the number of parts and an increase in cost.

本発明に係る車両用信号灯要部の斜視図である。It is a perspective view of the vehicle signal lamp principal part which concerns on this invention. 本発明に係る車両用信号灯の正面図である。It is a front view of the signal lamp for vehicles concerning the present invention. 図２のＡ部拡大詳細図である。FIG. 3 is an enlarged detail view of a part A in FIG. 2. 本発明に係る車両用信号灯の平面図である。It is a top view of the signal lamp for vehicles concerning the present invention. 本発明に係る車両用信号灯の右側面図である。It is a right view of the signal lamp for vehicles concerning the present invention. 図２のＢ−Ｂ線断面図である。FIG. 3 is a sectional view taken along line B-B in FIG. 2. 図２のＣ−Ｃ線断面図である。It is CC sectional view taken on the line of FIG. 本発明に係る車両用信号灯の導光レンズ端部の斜視図である。It is a perspective view of the light guide lens edge part of the signal lamp for vehicles concerning the present invention. 特許文献１において提案された車両用信号灯の平断面図である。It is a plane sectional view of the signal lamp for vehicles proposed in patent documents 1. 図９のＤ−Ｄ線断面図である。FIG. 10 is a sectional view taken along line D-D in FIG. 9.

以下に本発明の実施の形態を添付図面に基づいて説明する。   Embodiments of the present invention will be described below with reference to the accompanying drawings.

図１は本発明に係る車両用信号灯要部の斜視図、図２は同車両用信号灯の正面図、図３は図２のＡ部拡大詳細図、図４は本発明に係る車両用信号灯の平面図、図５は同車両用信号灯の右側面図、図６は図２のＢ−Ｂ線断面図、図７は図２のＣ−Ｃ線断面図、図８は本発明に係る車両用信号灯の導光レンズ端部の斜視図である。   1 is a perspective view of a vehicle signal lamp main part according to the present invention, FIG. 2 is a front view of the vehicle signal lamp, FIG. 3 is an enlarged detail view of a part A in FIG. 2, and FIG. 4 is a vehicle signal lamp according to the present invention. FIG. 5 is a right side view of the signal lamp for the vehicle, FIG. 6 is a cross-sectional view taken along line BB in FIG. 2, FIG. 7 is a cross-sectional view taken along line CC in FIG. It is a perspective view of the light guide lens edge part of a signal lamp.

本発明に係る車両用信号灯１は、例えば車両後部の左右に配置されるテールランプとして使用されるものであって、不図示のハウジングとその前面開口部を覆う不図示の透明なアウタレンズによって画成される灯室内に、単一の光源であるＬＥＤ２と、該ＬＥＤ２の光軸に沿って配置された配光制御用の導光レンズ３と、該導光レンズ３から出射する光を反射又は拡散させるリフレクタ４を収容して構成されている。   The vehicle signal lamp 1 according to the present invention is used as a tail lamp disposed on the left and right of the rear part of the vehicle, for example, and is defined by a housing (not shown) and a transparent outer lens (not shown) that covers a front opening thereof. In the lamp chamber, a single light source LED 2, a light distribution control light guide lens 3 disposed along the optical axis of the LED 2, and light emitted from the light guide lens 3 are reflected or diffused. The reflector 4 is accommodated.

上記ＬＥＤ２は、赤色ＬＥＤであって、正面視で左端部に配置されており、水平な光軸に沿って赤色光を出射する。尚、本実施の形態では、ＬＥＤ２として基板５に実装された面実装タイプのものが使用されているが、これに限らず砲弾タイプのもの等を使用することができる。   The LED 2 is a red LED and is disposed at the left end portion in a front view and emits red light along a horizontal optical axis. In the present embodiment, a surface mount type mounted on the substrate 5 is used as the LED 2, but not limited to this, a bullet type or the like can be used.

ＬＥＤ２の光軸に沿って水平に配置された前記導光レンズ３は、丸棒状の第１レンズ３Ａと、該第１レンズ３Ａの背面側（図４及び図６の上側）に平行に配置された角棒状の第２レンズ３Ｂとで構成されており、この第２レンズ３Ｂは、第１全反射面６と第２全反射面７を介して第１レンズ３Ａの右端部（ＬＥＤ２とは反対側の軸方向端部）に連結されている。より詳細には、第２レンズ３Ｂは、図８に示すように、ＬＥＤ２の光軸と直交する連結部３Ｃによって第１レンズ３Ａの右端部に連結されており、連結部３Ｃの両端角部に４５°面を成す第１全反射面６と第２全反射面７がそれぞれ形成されている。ここで、第２全反射面７は、図８に斜線にて示すように、上下２枚の４５°面７ａ，７ｂで構成されており、これらの４５°面７ａ，７ｂは、両者の稜線（境界線）を中心として垂直面に対して所定角度だけ傾斜して側面視横Ｖ字状を成すよう配置されている。   The light guide lens 3 disposed horizontally along the optical axis of the LED 2 is disposed in parallel to the first rod 3A having a round bar shape and the back side (the upper side in FIGS. 4 and 6) of the first lens 3A. The second lens 3B is a right end of the first lens 3A (opposite to the LED 2) via the first total reflection surface 6 and the second total reflection surface 7. Side axial direction end). More specifically, as shown in FIG. 8, the second lens 3B is connected to the right end portion of the first lens 3A by a connecting portion 3C orthogonal to the optical axis of the LED 2, and is formed at both end corners of the connecting portion 3C. A first total reflection surface 6 and a second total reflection surface 7 forming a 45 ° surface are formed. Here, as shown by hatching in FIG. 8, the second total reflection surface 7 is composed of two upper and lower 45 ° surfaces 7a and 7b, and these 45 ° surfaces 7a and 7b are ridge lines of both. It is arranged so as to be inclined at a predetermined angle with respect to the vertical plane with the (boundary line) as the center to form a horizontal V shape in side view.

又、図３に詳細に示すように、第１レンズ３ＡのＬＥＤ２に対向する端面は入光面８を構成しており、この入光面８の軸中心部には、ＬＥＤ２から出射する強度の強い光Ｌ２を光軸に沿って導光させる凸レンズ状の配光制御部８ａが形成されている。   As shown in detail in FIG. 3, the end surface of the first lens 3 </ b> A facing the LED 2 constitutes a light incident surface 8, and the intensity of light emitted from the LED 2 is formed at the axial center of the light incident surface 8. A convex lens-shaped light distribution control unit 8a that guides strong light L2 along the optical axis is formed.

更に、図４、図６及び図８に示すように、導光レンズ３の第１レンズ３Ａの背面には、鋸歯状の複数のレンズカット３ａが長手方向に沿って形成されている。又、図１、図４及び図８に示すように、導光レンズ３の第２レンズ３Ｂの上面には、鋸歯状の複数のレンズカット３ｂが長手方向に沿って形成されている。   Furthermore, as shown in FIGS. 4, 6, and 8, a plurality of sawtooth lens cuts 3 a are formed on the back surface of the first lens 3 </ b> A of the light guide lens 3 along the longitudinal direction. As shown in FIGS. 1, 4 and 8, a plurality of sawtooth-shaped lens cuts 3b are formed on the upper surface of the second lens 3B of the light guide lens 3 along the longitudinal direction.

前記リフレクタ４は、導光レンズ３の背面側に配置された円弧曲面状の部材であって、その前面（内面）は反射面又は拡散面を構成している。ここで、前記ＬＥＤ２と導光レンズ３は、リフレクタ４の上部前方に配置されており、リフレクタ４の下半部は、ＬＥＤ２及び導光レンズ３を下方から覆うように前方に向かって円弧状に延びている（図５及び図７参照）。   The reflector 4 is a circularly curved member disposed on the back side of the light guide lens 3, and the front surface (inner surface) forms a reflection surface or a diffusion surface. Here, the LED 2 and the light guide lens 3 are disposed in front of the upper portion of the reflector 4, and the lower half of the reflector 4 has an arc shape toward the front so as to cover the LED 2 and the light guide lens 3 from below. It extends (see FIGS. 5 and 7).

次に、以上のように構成された車両用信号灯１の作用について説明する。   Next, the operation of the vehicular signal lamp 1 configured as described above will be described.

光源であるＬＥＤ２に電流が供給されて該ＬＥＤ２が発光すると、該ＬＥＤ２から横方向に出射する光のうち、強度が比較的弱くてロスの少ない光（光軸から１５°〜６０°の角度範囲の光）Ｌ１は、第１レンズ３Ａの入光面８の配光制御部８ａの周囲から該第１レンズ３Ａの内部へと入射する。そして、第１レンズ３Ａ内に入射した強度の弱い光Ｌ１は、図６に示すように第１レンズ３Ａ内を全反射しながら右端側に向かって進み、その過程で第１レンズ３Ａのレンズカット３ａによって屈折し、図６及び図７に示すように第１レンズ３Ａから前方に向かって出射するため、導光レンズ３（第１レンズ３Ａ）の全体が均一に発光する。   When current is supplied to the LED 2 that is a light source and the LED 2 emits light, light that is emitted from the LED 2 in the lateral direction has relatively low intensity and little loss (angle range of 15 ° to 60 ° from the optical axis). L1) enters the first lens 3A from the periphery of the light distribution control portion 8a of the light incident surface 8 of the first lens 3A. Then, the low-intensity light L1 incident on the first lens 3A proceeds toward the right end side while being totally reflected inside the first lens 3A as shown in FIG. 6, and in the process, the lens cut of the first lens 3A is performed. Since the light is refracted by 3a and emitted forward from the first lens 3A as shown in FIGS. 6 and 7, the entire light guide lens 3 (first lens 3A) emits light uniformly.

他方、ＬＥＤ２から出射する強度の強い光（光軸から１５°以内の角度範囲の光り）Ｌ２は、図３に示すように、第１レンズ３Ａの入光面８に形成された配光制御部８ａによって配光が制御され、第１レンズ３Ａ内を光軸に沿ってロスなく直進する。この第１レンズ３Ａ内を光軸に沿って直進する光Ｌ２は、連結部３Ｃに形成された第１全反射面６と第２全反射面７で全反射して第２レンズ３Ｂに入射し、第２レンズ３Ｂ内を進む過程で該第２レンズ３Ｂの上面に形成された複数のレンズカット３ｂで屈折して図７に示すようにリフレクタ４に向かって下方に出射する。そして、第２レンズ３Ｂからリフレクタ４に向かって下方に出射する光Ｌ２は、リフレクタ４の内面で反射又は拡散して前方に向かって出射するため、リフレクタ４が効率良く発光する。尚、第２全反射面７には、光軸方向に揃えられた光Ｌ２が当たるため、通常の４５°面で光Ｌ２を全反射させると、第２レンズ３Ｂに向けて光Ｌ２がうまく入射しない。このため、本実施の形態では、前述のように第２全反射面７を、図８に斜線にて示すように、上下２枚の４５°面７ａ，７ｂで構成するとともに、これらの４５°面７ａ，７ｂを、両者の稜線（境界線）を中心として垂直面に対して所定角度だけ傾斜させて側面視横Ｖ字状を成すよう配置した。これにより、第１レンズ３Ａ内を直進する光Ｌ２を光軸から若干角度をもたせて第２レンズ３Ｂへとうまく入射させることができる。   On the other hand, as shown in FIG. 3, the light distribution control unit formed on the light incident surface 8 of the first lens 3A is a strong light L2 emitted from the LED 2 (light within an angle range within 15 ° from the optical axis). The light distribution is controlled by 8a and travels straight within the first lens 3A along the optical axis without loss. The light L2 that travels straight along the optical axis in the first lens 3A is totally reflected by the first total reflection surface 6 and the second total reflection surface 7 formed in the connecting portion 3C and enters the second lens 3B. In the course of proceeding through the second lens 3B, the light is refracted by the plurality of lens cuts 3b formed on the upper surface of the second lens 3B and emitted downward toward the reflector 4 as shown in FIG. The light L2 emitted downward from the second lens 3B toward the reflector 4 is reflected or diffused by the inner surface of the reflector 4 and emitted forward, so that the reflector 4 emits light efficiently. In addition, since the light L2 aligned in the optical axis direction hits the second total reflection surface 7, if the light L2 is totally reflected on the normal 45 ° surface, the light L2 is incident well toward the second lens 3B. do not do. For this reason, in the present embodiment, as described above, the second total reflection surface 7 is composed of two upper and lower 45 ° surfaces 7a and 7b as shown by oblique lines in FIG. The surfaces 7a and 7b were arranged so as to have a horizontal V shape when viewed from the side by being inclined at a predetermined angle with respect to the vertical surface with the ridgeline (boundary line) between them as the center. As a result, the light L2 traveling straight in the first lens 3A can be incident on the second lens 3B with a slight angle from the optical axis.

以上の結果、本発明に係る車両用信号灯１によれば、部品点数の増加やコストアップを招くことなく、単一のＬＥＤ２によって導光レンズ３とリフレクタ４を効率良く発光させることができるという効果が得られる。   As a result, according to the vehicular signal lamp 1 according to the present invention, the light guide lens 3 and the reflector 4 can be efficiently emitted by the single LED 2 without causing an increase in the number of parts and an increase in cost. Is obtained.

尚、以上は本発明に係る車両用信号灯１をテールランプとして使用する形態について説明したが、本発明は、ターンシグナルランプやポジションランプ等の他の任意の車両用信号灯に対しても同様に適用可能であることは勿論である。   In the above description, the vehicle signal lamp 1 according to the present invention is used as a tail lamp. However, the present invention can be applied to any other vehicle signal lamp such as a turn signal lamp or a position lamp. Of course.

１ 車両用信号灯
２ ＬＥＤ（光源）
３ 導光レンズ
３Ａ 第１レンズ
３Ｂ 第２レンズ
３Ｃ 連結部
３ａ，３ｂ レンズカット
４ リフレクタ
５ 基板
６ 第１全反射面
７ 第２全反射面
７ａ，７ｂ 第２全反射面の４５°面
８ 第１レンズの入光面
８ａ 入光面の配光制御部
Ｌ１ 強度の弱い光
Ｌ２ 強度の強い光
1 Vehicle signal light 2 LED (light source)
DESCRIPTION OF SYMBOLS 3 Light guide lens 3A 1st lens 3B 2nd lens 3C Connection part 3a, 3b Lens cut 4 Reflector 5 Board | substrate 6 1st total reflection surface 7 2nd total reflection surface 7a, 7b 45 degree surface of 2nd total reflection surface 8 1st Light entrance surface of one lens 8a Light distribution control part of light entrance surface L1 Light with low intensity L2 Light with high intensity

Claims (3)

単一の光源と、該光源の光軸に沿って配置された導光レンズと、該導光レンズから出射する光を反射又は拡散させるリフレクタを備えた車両用信号灯において、
前記導光レンズを、第１レンズと、該第１レンズの反光源側端部に第１及び第２全反射面を介して連なる第２レンズとで構成し、
前記第１レンズの背面に、前記光源から当該第１レンズに入射する光を前面側に出射させる複数のレンズカットを形成し、
前記第２レンズの上面に、前記光源から前記第１レンズに入射した後に前記第１及び第２全反射面を経て前記第２レンズに入射する光を前記リフレクタに向けて下方に出射させる複数のレンズカットを形成したことを特徴とする車両用信号灯。 In a vehicle signal lamp comprising a single light source, a light guide lens disposed along the optical axis of the light source, and a reflector that reflects or diffuses light emitted from the light guide lens,
The light guide lens is composed of a first lens and a second lens connected to the opposite end of the first lens through the first and second total reflection surfaces,
On the back surface of the first lens, a plurality of lens cuts for emitting light incident on the first lens from the light source to the front side is formed,
A plurality of light beams, which are incident on the second lens through the first and second total reflection surfaces after entering the first lens from the light source on the upper surface of the second lens, are emitted downward toward the reflector. A signal lamp for a vehicle characterized by forming a lens cut. 前記第１レンズの前記光源に対向する入光面に、前記光源から出射する光軸から所定角度範囲内の光を光軸に沿って第１レンズ内を導光させる配光制御部を形成したことを特徴とする請求項１記載の車両用信号灯。   A light distribution control unit that guides light within a predetermined angle range from the optical axis emitted from the light source along the optical axis to the light incident surface facing the light source of the first lens is formed. The vehicular signal lamp according to claim 1. 前記第２全反射面を上下２枚の４５°面で構成するとともに、両４５°面を垂直面に対して傾斜させたことを特徴とする請求項１又は２記載の車両用信号灯。
3. The vehicular signal lamp according to claim 1, wherein the second total reflection surface is composed of two upper and lower 45 ° surfaces, and both 45 ° surfaces are inclined with respect to a vertical surface.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101841600B1 (en) 2016-10-04 2018-03-26 에스엘 주식회사 Lamp for vehicle
JP2018120708A (en) * 2017-01-24 2018-08-02 スタンレー電気株式会社 Vehicular lighting fixture
WO2019181795A1 (en) * 2018-03-19 2019-09-26 いすゞ自動車株式会社 Light guide and vehicle lamp
WO2024110563A1 (en) * 2022-11-25 2024-05-30 Valeo Vision Optical illumination assembly, lighting apparatus and motor vehicle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070292101A1 (en) * 2006-06-15 2007-12-20 Valeo Vision Lighting or signalling device having an optical guide for a motor vehicle
JP2008097923A (en) * 2006-10-10 2008-04-24 Ichikoh Ind Ltd Vehicular lighting fixture
JP2008097924A (en) * 2006-10-10 2008-04-24 Ichikoh Ind Ltd Vehicular lighting fixture
JP2012169231A (en) * 2011-02-17 2012-09-06 Koito Mfg Co Ltd Vehicular lamp
JP2012230862A (en) * 2011-04-27 2012-11-22 Koito Mfg Co Ltd Vehicle lamp

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070292101A1 (en) * 2006-06-15 2007-12-20 Valeo Vision Lighting or signalling device having an optical guide for a motor vehicle
JP2007335410A (en) * 2006-06-15 2007-12-27 Valeo Vision Vehicle lighting/signaling device with optical waveguide line
JP2008097923A (en) * 2006-10-10 2008-04-24 Ichikoh Ind Ltd Vehicular lighting fixture
JP2008097924A (en) * 2006-10-10 2008-04-24 Ichikoh Ind Ltd Vehicular lighting fixture
JP2012169231A (en) * 2011-02-17 2012-09-06 Koito Mfg Co Ltd Vehicular lamp
JP2012230862A (en) * 2011-04-27 2012-11-22 Koito Mfg Co Ltd Vehicle lamp

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101841600B1 (en) 2016-10-04 2018-03-26 에스엘 주식회사 Lamp for vehicle
JP2018120708A (en) * 2017-01-24 2018-08-02 スタンレー電気株式会社 Vehicular lighting fixture
WO2019181795A1 (en) * 2018-03-19 2019-09-26 いすゞ自動車株式会社 Light guide and vehicle lamp
CN111868436A (en) * 2018-03-19 2020-10-30 五十铃自动车株式会社 Light guide and vehicle lamp
WO2024110563A1 (en) * 2022-11-25 2024-05-30 Valeo Vision Optical illumination assembly, lighting apparatus and motor vehicle

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