JP6121721B2 - Vehicle lighting - Google Patents

Vehicle lighting Download PDF

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JP6121721B2
JP6121721B2 JP2013001151A JP2013001151A JP6121721B2 JP 6121721 B2 JP6121721 B2 JP 6121721B2 JP 2013001151 A JP2013001151 A JP 2013001151A JP 2013001151 A JP2013001151 A JP 2013001151A JP 6121721 B2 JP6121721 B2 JP 6121721B2
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lens
planar
reflecting
light
light source
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JP2014135142A (en
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卓弘 山岡
卓弘 山岡
中村　圭吾
圭吾 中村
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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
    • F21S43/241—Light guides characterised by the shape of the light guide of complex shape
    • 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
    • F21S43/315—Optical layout thereof using total internal reflection
    • 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)

Description

本発明は、テール／ストップランプ等の車両用灯具に関するものである。   The present invention relates to a vehicular lamp such as a tail / stop lamp.

車両後部の左右に配置されるテール／ストップランプ等の車両用灯具においては、効率良く発光させるためにレンズを用いることが行われているが、光源からの出射光をレンズによって効率良く集光し、集光した光を所定の角度を付けて所定の方向に照射するものが一般的であった。   In vehicle lamps such as tail / stop lamps arranged on the left and right of the rear of the vehicle, lenses are used to efficiently emit light, but the light emitted from the light source is efficiently collected by the lenses. In general, the condensed light is irradiated in a predetermined direction with a predetermined angle.

特許文献１には、１つの光源を用いて様々な形状に発光させるレンズが提案されている。具体的には、レンズのＬＥＤに接触する位置に凸型の吸収面を設けるとともに、この吸収面の裏側に第１反射面を設け、該第１反射面の外側の所定距離隔てた位置に第２反射面を設け、ＬＥＤから出射する光を前記吸収面によって光源光軸に収束させ、この光源光軸に収束された光を前記第１反射面によって光源光軸に対して外側に屈曲させ、第１反射面で反射した光を前記第２反射面によって光源光軸と平行又は拡散させたり収束させるようにしている。   Patent Document 1 proposes a lens that emits light in various shapes using a single light source. Specifically, a convex absorption surface is provided at a position in contact with the LED of the lens, a first reflection surface is provided on the back side of the absorption surface, and the first reflection surface is provided at a position separated by a predetermined distance outside the first reflection surface. 2 reflection surfaces are provided, the light emitted from the LED is converged on the light source optical axis by the absorption surface, and the light converged on the light source optical axis is bent outward with respect to the light source optical axis by the first reflection surface, The light reflected by the first reflecting surface is made parallel or diffused by the second reflecting surface or converged by the second reflecting surface.

又、特許文献２には、発光領域の略中心に第１の光源を配置し、該第１の光源の照射方向側を透明なカバーレンズで覆い、第１の光源の正面方向には、第１の光源からの光を照射方向と略直交する方向で且つ全周に向かって反射する中心側反射部を設け、カバーレンズの外周には、第１の光源からの光を照射方向に向かわせて反射し放射状に発光させる外径側反射部と同一部材による接合部で一体化された車両用灯具が提案されている。これによれば、非点灯時の昼間だけでなく、点灯時の夜間においても車両用灯具の美観の向上を図ることができる。   Further, in Patent Document 2, a first light source is disposed at substantially the center of the light emitting region, the irradiation direction side of the first light source is covered with a transparent cover lens, A center-side reflecting portion that reflects light from one light source in a direction substantially orthogonal to the irradiation direction and toward the entire circumference is provided, and light from the first light source is directed to the irradiation direction on the outer periphery of the cover lens. A vehicular lamp is proposed that is integrated with a joint portion made of the same member as an outer-diameter-side reflecting portion that reflects and emits light radially. According to this, it is possible to improve the aesthetics of the vehicular lamp not only during the daytime when it is not lit but also during the night time when it is lit.

特開２００２−１９６１０８号公報JP 2002-196108 A 特開２００５−２６８１３１号公報JP 2005-268131 A

しかしながら、特許文献１，２において提案された構成によれば、ＬＥＤからの光が反射面で１回だけ反射してそのまま照射されるため、光は平面的で奥行き感が感じられないという問題がある。   However, according to the configurations proposed in Patent Documents 1 and 2, since the light from the LED is reflected by the reflecting surface only once and irradiated as it is, there is a problem that the light is flat and the sense of depth is not felt. is there.

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、奥行き感のある発光を実現することができる車両用灯具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 lamp that can realize light emission with a sense of depth.

上記目的を達成するため、請求項１記載の発明は、
ＬＥＤ光源と、該ＬＥＤ光源の周囲に配置された平面反射面と、前記ＬＥＤ光源の光出射方向において前記平面反射面から離間した位置に配置されたレンズを備え、
前記レンズの前記ＬＥＤ光源に対向する面に形成された入射面と該入射面とは反対側の面に形成された凹状の反射面とから成る入光反射部と、前記平面反射面と平行な平面導光部と、該平面導光部の端部から前記ＬＥＤ光源の光軸方向に延びる縦壁導光部と、を前記レンズに設けて成る車両用灯具において、
前記平面反射面は、鏡面反射面とされ、該平面反射面の中心の奥側には１つのＬＥＤ光源を前記レンズに向かって突出させ、同平面反射面の奥側の同一円周上に複数の別のＬＥＤ光源を周方向に等間隔で前記レンズに向かって突出させ、
前記レンズの前記平面反射面とは反対側の面であって、且つ、前記別のＬＥＤ光源に対応する位置に複数のレンズカットを同一円周上に等角度ピッチで形成し、
前記レンズの平面導光部に、前記入光反射部の反射面から前記平面導光部内に入射した光を前記平面反射面に向けて反射させる反射部を形成するとともに、
前記レンズの端部の前記平面反射面に対向する面に、前記平面導光部内を導光される光を反射させて前記縦壁導光部へと導く傾斜反射面を形成し、
前記反射部は、
前記レンズの平面反射面とは反対側の面に、前記ＬＥＤ光源側に向かって凹の窪み形状であって、
前記レンズカットの径方向内側の同一円周上に前記レンズカットと同一ピッチで形成された複数の第１反射部と、
該第１反射部の径方向外側の同一円周上であって、且つ、周方向に隣接する前記第１反射部の間の角度位置に形成された複数の第２反射部と、
で構成されることを特徴とする。
In order to achieve the above object, the invention according to claim 1
An LED light source, a planar reflection surface disposed around the LED light source, and a lens disposed at a position spaced from the planar reflection surface in the light emission direction of the LED light source,
A light incident reflecting portion comprising an incident surface formed on a surface of the lens facing the LED light source and a concave reflecting surface formed on a surface opposite to the incident surface; and parallel to the planar reflecting surface. In the vehicle lamp comprising the planar light guide unit and the vertical wall light guide unit extending in the optical axis direction of the LED light source from the end of the planar light guide unit in the lens,
The planar reflecting surface is a mirror reflecting surface, and one LED light source protrudes toward the lens on the back side of the center of the planar reflecting surface, and a plurality of the light reflecting surfaces on the same circumference on the back side of the planar reflecting surface. Projecting another LED light source toward the lens at equal intervals in the circumferential direction,
A plurality of lens cuts are formed at an equiangular pitch on the same circumference on the opposite side of the plane reflecting surface of the lens and at a position corresponding to the other LED light source,
In the planar light guide portion of the lens, a reflection portion that reflects light incident from the reflection surface of the light incident reflection portion into the planar light guide portion toward the planar reflection surface, and
An inclined reflection surface is formed on a surface of the end portion of the lens that faces the planar reflection surface to reflect the light guided in the planar light guide unit and guide the light to the vertical wall light guide unit .
The reflective portion is
On the surface opposite to the plane reflecting surface of the lens, the concave shape is concave toward the LED light source side,
A plurality of first reflecting portions formed at the same pitch as the lens cut on the same circumference inside the lens cut in the radial direction;
A plurality of second reflecting portions formed on the same circumference outside in the radial direction of the first reflecting portion and formed at angular positions between the first reflecting portions adjacent in the circumferential direction;
It is characterized by comprising.

請求項２記載の発明は、請求項１記載の発明において、前記レンズの縦壁導光部を円筒状とし、その光出射面に粗面処理を施したことを特徴とする。
According to a second aspect of the invention of claim 1 Symbol mounting, the vertical-wall light portion of the lens is cylindrical, characterized in that subjected to surface roughening on the light emitting surface.

請求項３記載の発明は、請求項２記載の発明において、前記レンズの縦壁導光部の先端が斜めの端面とされていることを特徴とする。
According to a third aspect, the invention of claim 2 Symbol placing the tip of the vertical-wall light portion of the lens is characterized in that there is a diagonal end face.

本発明によれば、ＬＥＤ光源から出射する光は、レンズの入光反射部の入射面からレンズ内に入射し、反射面で反射して平面導光部内を進む過程で、該平面導光部に形成された反射部によって反射して平面反射面に向かい、平面反射面で反射してレンズを通過して出射するため、レンズと平面反射面との距離だけ発光に奥行き感が得られる。   According to the present invention, the light emitted from the LED light source enters the lens from the incident surface of the light incident / reflecting portion of the lens, and is reflected by the reflecting surface and travels through the planar light guiding portion. Since the light is reflected by the reflecting portion formed on the surface, travels toward the plane reflecting surface, is reflected by the plane reflecting surface, passes through the lens, and is emitted, a sense of depth is obtained in light emission by the distance between the lens and the plane reflecting surface.

又、レンズの平面導光部を進む光は、平面導光部の端部に形成された傾斜反射面で反射して縦壁導光部へと入射し、該縦壁導光部の端面から出射するため、縦壁導光部をその形状に沿って発光させることができる。
Further, light traveling planar light guide portion of the lens is incident to the vertical-wall light portion reflected by the inclined reflecting surface formed on an end portion of the planar light guide, the end surface of the vertical-wall light unit to exit, it can be emitted along the vertical-wall light portion of the shape.

本発明に係るテール／ストップランプを含むリヤコンビネーションランプの正面図である。It is a front view of a rear combination lamp including a tail / stop lamp according to the present invention. 本発明に係るテール／ストップランプの斜視図である。1 is a perspective view of a tail / stop lamp according to the present invention. FIG. 本発明に係るテール／ストップランプの正面図である。1 is a front view of a tail / stop lamp according to the present invention. FIG. 図３のＡ−Ａ線断面図である。FIG. 4 is a sectional view taken along line AA in FIG. 3.

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は本発明に係るテール／ストップランプを含むリヤコンビネーションランプの正面図、図２は同テール／ストップランプの斜視図、図３は同テール／ストップランプの正面図、図４は図３のＡ−Ａ線断面図であり、図１に示すリヤコンビネーションランプ１は、車両後部の左右に配置されるものであって、左右のリヤコンビネーションランプ１の基本構成は同じであるため、以下、一方についてのみ図示及び説明する。   1 is a front view of a rear combination lamp including a tail / stop lamp according to the present invention, FIG. 2 is a perspective view of the tail / stop lamp, FIG. 3 is a front view of the tail / stop lamp, and FIG. 1 is a cross-sectional view taken along line AA, and the rear combination lamp 1 shown in FIG. 1 is disposed on the left and right of the rear part of the vehicle, and the basic configuration of the left and right rear combination lamps 1 is the same. Only will be shown and described.

本実施の形態に係るリヤコンビネーションランプ１は、ハウジング２とその開口部を覆う透明なアウタカバー３によって画成される灯室４内に、図１に示すように、本発明に係るテール／ストップランプ５、ターンシグナルランプ６等を収納して構成されている。   As shown in FIG. 1, a rear combination lamp 1 according to the present embodiment includes a tail / stop lamp according to the present invention in a lamp chamber 4 defined by a housing 2 and a transparent outer cover 3 that covers the opening. 5. It is configured to accommodate a turn signal lamp 6 and the like.

テール／ストップランプ５は、図２及び図３に示すように端部が斜めにカットされた有底筒状の透明なレンズ７を備えており、該レンズ７の円板状の底面は平面導光部７Ａを構成している。又、レンズ７の平面導光部７Ａの周縁からは円筒状の縦壁導光部７Ｂが立設されている。尚、レンズ７の縦壁導光部７Ｂの端面は、図２に示すように斜めにカットされている。   As shown in FIGS. 2 and 3, the tail / stop lamp 5 includes a bottomed cylindrical transparent lens 7 whose end is obliquely cut, and the disk-shaped bottom surface of the lens 7 is planarly guided. The optical part 7A is configured. A cylindrical vertical wall light guide 7B is erected from the periphery of the planar light guide 7A of the lens 7. The end surface of the vertical wall light guide 7B of the lens 7 is cut obliquely as shown in FIG.

ところで、テール／ストップランプ５においては、図４に示すように、レンズ７の奥側に、平面反射面８がレンズ７の平面導光部７Ａに対して所定距離だけ離間して平行に配置されており、該平面反射面８の中心に形成された円孔８ａからは、その奥側に配置された１つのＬＥＤ光源９がレンズ７側に向かって突出している。又、平面反射面８の周囲の同一円周上には複数（１１個）の円孔８ｂが（図４には１個のみ図示）が周方向に等間隔で形成されており、各円孔８ｂには平面反射面８の奥側に配置された別のＬＥＤ光源１０がそれぞれ突出している。ここで、レンズ７の平面反射面８とは反対側の面（図４の下面）であって、且つ、ＬＥＤ光源１０に対応する位置には、計１１個のレンズカット１１が同一円周上に等角度ピッチで形成されている（図２及び図３参照）。尚、本実施の形態では、平面反射面８は鏡面反射面を構成している。
By the way, in the tail / stop lamp 5, as shown in FIG. 4, on the back side of the lens 7, the plane reflecting surface 8 is arranged in parallel with a predetermined distance from the plane light guide portion 7A of the lens 7. From the circular hole 8a formed at the center of the plane reflecting surface 8, one LED light source 9 arranged on the back side protrudes toward the lens 7 side. In addition, a plurality (11) of circular holes 8b (only one is shown in FIG. 4) are formed at equal intervals in the circumferential direction on the same circumference around the plane reflecting surface 8. The other LED light source 10 arrange | positioned in the back side of the plane reflective surface 8 protrudes in 8b, respectively. Here, a total of eleven lens cuts 11 are on the same circumference on the surface opposite to the plane reflecting surface 8 of the lens 7 (the lower surface in FIG. 4 ) and at a position corresponding to the LED light source 10. Are formed at an equiangular pitch (see FIGS. 2 and 3). In the present embodiment, the plane reflecting surface 8 constitutes a specular reflecting surface.

そして、図４に示すように、レンズ７の中心部のＬＥＤ光源９に対向する面（図４の上面）には球面状の入射面７ａが形成されており、同レンズ７の入射面７ａとは反対側の面（図４の下面）にはＶ字にカットされた凹状の反射面７ｂが形成されている。尚、レンズ７の中央部に形成された入射面７ａと反射面７ｂとは入光反射部を構成している。   As shown in FIG. 4, a spherical incident surface 7 a is formed on a surface (upper surface in FIG. 4) facing the LED light source 9 at the center of the lens 7. On the opposite surface (lower surface in FIG. 4), a concave reflecting surface 7b cut into a V shape is formed. Incidentally, the incident surface 7a and the reflecting surface 7b formed at the central portion of the lens 7 constitute a light incident reflecting portion.

又、レンズ７の平面導光部７Ａの平面反射面８とは反対側の面（図４の下面）には、前記入光反射部の反射面７ａから当該平面導光部７Ａ内に入射した光を平面反射面８に向けて反射させる第１反射部７ｃと第２の反射部７ｄが形成されている。具体的には、図２及び図３に示すように、レンズ７の平面導光部７Ａの平面反射部８とは反対側の面であって、前記レンズカット１１の径方向内側の同一円周上には、レンズカット１１と同数（１１個）の第１反射部７ｃがレンズカット１１と同一ピッチで形成されている。又、レンズ７の平面導光部７Ａの平面反射面８とは反対側の面であって、前記レンズカット１１の径方向外側の同一円周上であって、且つ、周方向に隣接する前記第１反射部７ｃの間の角度位置（周方向に隣接する２つのレンズカット１１の間）には、第１反射部７ｃと同数（１１個）の第２反射部７ｄが形成されている。尚、第１反射部７ｃと第２反射部７ｄは、図４に示すように（図４には第１反射部７ｃのみ図示）ＬＥＤ光源９，１０側に向かって凹の階段状の窪み形状とされている。
Further, the surface (the lower surface in FIG. 4) opposite to the plane reflecting surface 8 of the plane light guide portion 7A of the lens 7 is incident on the plane light guide portion 7A from the reflecting surface 7a of the light incident reflecting portion. A first reflecting portion 7c and a second reflecting portion 7d that reflect light toward the plane reflecting surface 8 are formed. Specifically, as shown in FIG. 2 and FIG. 3, the same circumference on the opposite side of the planar light guide portion 7 </ b> A of the lens 7 from the planar reflecting portion 8 and on the radially inner side of the lens cut 11. On the top, the same number (11) of first reflecting portions 7 c as the lens cuts 11 are formed at the same pitch as the lens cuts 11. Further, the surface of the lens 7 opposite to the planar reflecting surface 8 of the planar light guide portion 7A is on the same circumference outside the lens cut 11 in the radial direction and adjacent to the circumferential direction. At the angular position between the first reflecting portions 7c (between two lens cuts 11 adjacent in the circumferential direction), the same number (11) of second reflecting portions 7d as the first reflecting portions 7c are formed. In addition, the 1st reflection part 7c and the 2nd reflection part 7d are as shown in FIG. 4 (only the 1st reflection part 7c is shown in FIG. 4) The step-shaped hollow shape which is concave toward the LED light sources 9 and 10 side. It is said that.

更に、図４に示すように、レンズ７の平面導光部７Ａの端部の前記平面反射面８に対向する面（図４の上面）には、前記平面導光部７Ａ内を導光される光を反射させて前記立壁導光部７Ｂへと導く傾斜反射面７ｅが形成されている。そして、本実施の形態では、レンズ７の円筒状の縦壁導光部７Ｂの斜めにカットされた端面は光出射面７ｆを構成しているが、この光出射面７ｆにはシボ加工等の粗面処理が施されている。   Further, as shown in FIG. 4, the surface of the planar light guide 7 </ b> A of the lens 7 facing the planar reflection surface 8 (upper surface in FIG. 4) is guided through the planar light guide 7 </ b> A. An inclined reflecting surface 7e is formed that reflects the light to be guided to the standing wall light guide 7B. In the present embodiment, the obliquely cut end surface of the cylindrical vertical wall light guide portion 7B of the lens 7 constitutes the light emitting surface 7f. A rough surface treatment is applied.

以上のように構成されたテール／ストップランプ５において、ＬＥＤ光源９から出射する光は、レンズ７の入光反射部の入射面７ａからレンズ７内に入射し、反射面７ｂで反射して平面導光部７Ａ内を進む過程で、該平面導光部７Ａに形成された第１反射部７ｃによって反射して平面反射面８に向かい、平面反射面８で反射してレンズ７を通過して出射する。又、図４には図示しないが、同様にレンズ７の平面導光部７Ａを内を進む光は、第２反射部７ｄによって反射して平面反射面８に向かい、平面反射面８で反射してレンズ７を通過して出射する。このようにＬＥＤ光源９からの光は、レンズ７の第１反射部７ｃ又は第２反射部７ｄと平面反射面８とで２回反射するため、レンズ７と平行反射面８との距離だけ発光に奥行き感が得られる。   In the tail / stop lamp 5 configured as described above, the light emitted from the LED light source 9 enters the lens 7 from the incident surface 7a of the light incident / reflecting portion of the lens 7, is reflected by the reflecting surface 7b, and is planar. In the process of proceeding through the light guide portion 7A, the light is reflected by the first reflecting portion 7c formed on the planar light guide portion 7A, directed to the planar reflecting surface 8, reflected by the planar reflecting surface 8, and passed through the lens 7. Exit. Although not shown in FIG. 4, similarly, the light traveling in the plane light guide portion 7 </ b> A of the lens 7 is reflected by the second reflecting portion 7 d toward the plane reflecting surface 8 and reflected by the plane reflecting surface 8. Then, the light passes through the lens 7 and is emitted. In this way, the light from the LED light source 9 is reflected twice by the first reflecting portion 7c or the second reflecting portion 7d of the lens 7 and the plane reflecting surface 8, so that the light is emitted by the distance between the lens 7 and the parallel reflecting surface 8. A sense of depth is obtained.

又、レンズ７の平面導光部７Ａを進む光は、図４に示すように、レンズ７の平面導光部７Ａの端部に形成された傾斜反射面７ｅで反射して立壁導光部７Ｂへと入射し、該立壁導光部７Ｂの端面である光出射面７ｆから出射するため、立壁導光部７Ｂをその形状に沿って丸く発光させることができる。そして、この場合、縦壁導光部７Ｂの光出射面７ｆにはシボ加工等の粗面処理を施したため、該光出射面７ｆから出射する光が拡散されて縦壁導光部７Ｂの光出射面７ｆが均一に発光する。   Further, as shown in FIG. 4, the light traveling through the planar light guide portion 7A of the lens 7 is reflected by the inclined reflecting surface 7e formed at the end of the planar light guide portion 7A of the lens 7, and the standing wall light guide portion 7B. Since the light enters the light source and exits from the light exit surface 7f that is the end face of the standing wall light guide portion 7B, the standing wall light guide portion 7B can emit light round along its shape. In this case, the light exit surface 7f of the vertical wall light guide section 7B has been subjected to rough surface processing such as embossing, so that the light emitted from the light output surface 7f is diffused and the light of the vertical wall light guide section 7B. The emission surface 7f emits light uniformly.

尚、以上は本発明をリヤコンビネーションランプに含まれるテール／ストップランプに対して適用した形態について説明したが、本発明は、ＬＥＤ光源を使用する他の車両用灯具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 present invention is applied to a tail / stop lamp included in a rear combination lamp. However, the present invention is similarly applied to other vehicular lamps using an LED light source. Of course, it is possible.

１ リヤコンビネーションランプ
２ ハウジング
３ アウタカバー
４ 灯室
５ テール／ストップランプ（車両用灯具）
６ ターンシグナルランプ
７ レンズ
７Ａ レンジの平面導光部
７Ｂ レンズの縦壁導光部
７ａ レンズの入射面
７ｂ レンズの反射面
７ｃ レンズの第１反射部
７ｄ レンズの第２反射部
７ｅ レンズの傾斜反射面
７ｆ 手手壁導光部の光出射面
８ 平面反射面
８ａ，８ｂ 平面反射面の円孔
９，１０ ＬＥＤ光源
１１ レンズカット
1 Rear Combination Lamp 2 Housing 3 Outer Cover 4 Light Chamber 5 Tail / Stop Lamp (Vehicle Lamp)
6 Turn signal lamp 7 Lens 7A Planar light guide portion of range 7B Lens vertical wall light guide portion 7a Lens incident surface 7b Lens reflection surface 7c Lens first reflection portion 7d Lens second reflection portion 7e Inclined reflection of lens Surface 7f Light emitting surface of the hand wall light guide unit 8 Planar reflecting surface 8a, 8b Circular hole in the planar reflecting surface 9, 10 LED light source 11 Lens cut

Claims (3)

ＬＥＤ光源と、該ＬＥＤ光源の周囲に配置された平面反射面と、前記ＬＥＤ光源の光出射方向において前記平面反射面から離間した位置に配置されたレンズを備え、
前記レンズの前記ＬＥＤ光源に対向する面に形成された入射面と該入射面とは反対側の面に形成された凹状の反射面とから成る入光反射部と、前記平面反射面と平行な平面導光部と、該平面導光部の端部から前記ＬＥＤ光源の光軸方向に延びる縦壁導光部と、を前記レンズに設けて成る車両用灯具において、
前記平面反射面は、鏡面反射面とされ、該平面反射面の中心の奥側には１つのＬＥＤ光源を前記レンズに向かって突出させ、同平面反射面の奥側の同一円周上に複数の別のＬＥＤ光源を周方向に等間隔で前記レンズに向かって突出させ、
前記レンズの前記平面反射面とは反対側の面であって、且つ、前記別のＬＥＤ光源に対応する位置に複数のレンズカットを同一円周上に等角度ピッチで形成し、
前記レンズの平面導光部に、前記入光反射部の反射面から前記平面導光部内に入射した光を前記平面反射面に向けて反射させる反射部を形成するとともに、
前記レンズの端部の前記平面反射面に対向する面に、前記平面導光部内を導光される光を反射させて前記縦壁導光部へと導く傾斜反射面を形成し、
前記反射部は、
前記レンズの平面反射面とは反対側の面に、前記ＬＥＤ光源側に向かって凹の窪み形状であって、
前記レンズカットの径方向内側の同一円周上に前記レンズカットと同一ピッチで形成された複数の第１反射部と、
該第１反射部の径方向外側の同一円周上であって、且つ、周方向に隣接する前記第１反射部の間の角度位置に形成された複数の第２反射部と、
で構成されることを特徴とする車両用灯具。 An LED light source, a planar reflection surface disposed around the LED light source, and a lens disposed at a position spaced from the planar reflection surface in the light emission direction of the LED light source,
A light incident reflecting portion comprising an incident surface formed on a surface of the lens facing the LED light source and a concave reflecting surface formed on a surface opposite to the incident surface; and parallel to the planar reflecting surface. In the vehicle lamp comprising the planar light guide unit and the vertical wall light guide unit extending in the optical axis direction of the LED light source from the end of the planar light guide unit in the lens,
The planar reflecting surface is a mirror reflecting surface, and one LED light source protrudes toward the lens on the back side of the center of the planar reflecting surface, and a plurality of the light reflecting surfaces on the same circumference on the back side of the planar reflecting surface. Projecting another LED light source toward the lens at equal intervals in the circumferential direction,
A plurality of lens cuts are formed at an equiangular pitch on the same circumference on the opposite side of the plane reflecting surface of the lens and at a position corresponding to the other LED light source,
In the planar light guide portion of the lens, a reflection portion that reflects light incident from the reflection surface of the light incident reflection portion into the planar light guide portion toward the planar reflection surface, and
An inclined reflection surface is formed on a surface of the end portion of the lens that faces the planar reflection surface to reflect the light guided in the planar light guide unit and guide the light to the vertical wall light guide unit .
The reflective portion is
On the surface opposite to the plane reflecting surface of the lens, the concave shape is concave toward the LED light source side,
A plurality of first reflecting portions formed at the same pitch as the lens cut on the same circumference inside the lens cut in the radial direction;
A plurality of second reflecting portions formed on the same circumference outside in the radial direction of the first reflecting portion and formed at angular positions between the first reflecting portions adjacent in the circumferential direction;
A vehicular lamp characterized by comprising: 前記レンズの縦壁導光部を円筒状とし、その光出射面に粗面処理を施したことを特徴とする請求項１記載の車両用灯具。 Vertical Wall light portion and a cylindrical a vehicle lamp according to claim 1 Symbol mounting, characterized in that subjected to surface roughening on the light exit surface of the lens. 前記レンズの縦壁導光部の先端が斜めの端面とされていることを特徴とする請求項２記載の車両用灯具。
The vehicular lamp according to claim 2 Symbol mounting, characterized in that the tip of the vertical-wall light portion is an oblique end face of the lens.
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