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JP2006313681A - Vehicular lighting tool - Google Patents

Vehicular lighting tool Download PDF

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Publication number
JP2006313681A
JP2006313681A JP2005135616A JP2005135616A JP2006313681A JP 2006313681 A JP2006313681 A JP 2006313681A JP 2005135616 A JP2005135616 A JP 2005135616A JP 2005135616 A JP2005135616 A JP 2005135616A JP 2006313681 A JP2006313681 A JP 2006313681A
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Japan
Prior art keywords
light
reflection surface
light guide
lens
external
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JP2005135616A
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Japanese (ja)
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JP4311371B2 (en
Inventor
Michiyoshi Shinozuka
徹孔 篠塚
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Ichikoh Industries Ltd
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Ichikoh Industries Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/0029—Spatial arrangement
    • B60Q1/0041—Spatial arrangement of several lamps in relation to each other
    • B60Q1/0058—Stacked, i.e. one lamp located behind the other in the optical axis direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/2607—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic comprising at least two indicating lamps
    • 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
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • 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
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/239—Light guides characterised by the shape of the light guide plate-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
    • F21S43/243—Light guides characterised by the emission area emitting light from one or more of its extremities
    • 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
    • F21S43/20—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
    • F21S43/249—Light guides with two or more light sources 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
    • F21S43/315—Optical layout thereof using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular lighting tool irradiating light from a plurality of light sources in a given direction, capable of being downsized. <P>SOLUTION: A light guide lens 20 is arranged inside a housing 5, an inner reflecting face 28 is formed inside the light guide lens 20, and an outer reflecting face 27 is formed on an outside face. A turn side LED 42 is provided as an inside light source irradiating the inner reflecting face 28, and a stop side LED 41 is provided as an outside light source irradiating the outer reflecting face 27. With this, at light emission of the turn side LED 42, the light is reflected at the inner reflecting face 28 to irradiate outside, and at light emission of the stop side LED 41, the light is reflected at the outer reflecting face 27 to irradiate outside, so that a space efficiency in the case of use of the light guide lens 20 for reflecting the light from the light source can be improved. As a result, light from a plurality of light sources is irradiated in a given direction, and yet, downsizing is attained. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、車両用灯具に関するものである。特に、この発明は、スペース効率を向上させることのできる車両用灯具に関するものである。   The present invention relates to a vehicular lamp. In particular, the present invention relates to a vehicular lamp that can improve space efficiency.

従来の車両用灯具では、車両用灯具の薄型化などの小型化や、照射部分の形状を任意の形状にするために、比較的反射面積の小さな反射面を複数組合せ、１つの光源からの光を複数の反射面で反射させているものがある。例えば、特許文献１では、１つの光源からの光が平行になるように光源の近傍にフレネルレンズを配置するとともに、このようなフレネルレンズ及び光源をそれぞれ複数設け、これらのフレネルレンズ及び光源は、フレネルレンズを通過することにより平行になった光源からの光が互いに交差するように配置している。さらに、互いに交差する光を所定の方向に照射するために、これらの光を反射できる反射面を複数配設している。また、特許文献２では、導光体を設け、導光体の内部に複数の反射面を設けている。光源からの光は導光体内を通り、当該導光体内に設けられた反射面で反射して所定の方向に反射する。このように、比較的反射面積の小さな反射面を複数組合せることにより、光源からの光を所定の任意の方向に反射させつつ、車両用灯具全体の小型化を図ることができる。   In conventional vehicle lamps, a combination of a plurality of reflective surfaces with relatively small reflective areas is used to reduce the size of the vehicle lamps, such as reducing the thickness of the vehicle lamps, and to change the shape of the irradiated part. Is reflected by a plurality of reflecting surfaces. For example, in Patent Document 1, a Fresnel lens is disposed in the vicinity of a light source so that light from one light source is parallel, and a plurality of such Fresnel lenses and light sources are provided, respectively. They are arranged so that the light from the light sources that have become parallel by passing through the Fresnel lens intersect each other. Furthermore, in order to irradiate light that intersects each other in a predetermined direction, a plurality of reflective surfaces that can reflect these light are provided. In Patent Document 2, a light guide is provided, and a plurality of reflecting surfaces are provided inside the light guide. Light from the light source passes through the light guide and is reflected by a reflecting surface provided in the light guide to be reflected in a predetermined direction. As described above, by combining a plurality of reflecting surfaces having relatively small reflection areas, it is possible to reduce the size of the entire vehicle lamp while reflecting light from the light source in a predetermined arbitrary direction.

特開２００３−６８１１５号公報JP 2003-68115 A ＵＳ６３０５８１３号US6305813

しかしながら、上述した車両用灯具では、光源からの光を複数の反射面で反射することによって光源からの光を所定の方向に照射しているため、反射面が設けられていない部分からは光を照射することができない。このため、車両用灯具全体の大きさに対して、反射によって所定の方向に光を照射する部分の面積が小さく、スペース効率があまり高くなかった。これは、複数の光源を用いた場合でも同様で、車両用灯具を照射方向に見た場合、つまり、反射面での反射後の光の方向から車両用灯具を見た場合に、反射面が設けられている部分からのみ照射するため、スペース効率があまり高くなかった。   However, in the vehicle lamp described above, the light from the light source is irradiated in a predetermined direction by reflecting the light from the light source with a plurality of reflection surfaces, and therefore light is emitted from the portion where the reflection surface is not provided. Cannot irradiate. For this reason, the area of the part which irradiates light in a predetermined direction by reflection with respect to the size of the entire vehicle lamp is small, and the space efficiency is not so high. This is the same even when a plurality of light sources are used.When the vehicular lamp is viewed in the irradiation direction, that is, when the vehicular lamp is viewed from the direction of light reflected by the reflection surface, The space efficiency was not so high because it was irradiated only from the provided part.

本発明は、上記に鑑みてなされたものであって、複数の光源からの光を所定の方向に照射しつつ小型化を図ることのできる車両用灯具を提供することを目的とする。   This invention is made | formed in view of the above, Comprising: It aims at providing the vehicle lamp which can attain size reduction, irradiating the light from a several light source to a predetermined direction.

上述した課題を解決し、目的を達成するために、この発明に係る車両用灯具は、複数の光源と、導光体と、を備える車両用灯具において、前記導光体は、前記導光体の内部に位置する反射面である内部反射面と、前記導光体の外面に位置する外部反射面と、を有しており、前記複数の光源は、前記内部反射面に光を照射する内部側光源と、前記外部反射面に光を照射する外部側光源と、を有していることを特徴とする。   In order to solve the above-described problems and achieve the object, a vehicle lamp according to the present invention includes a plurality of light sources and a light guide, wherein the light guide is the light guide. An internal reflection surface, which is a reflection surface located inside the light guide, and an external reflection surface located on the outer surface of the light guide, and the plurality of light sources irradiate the internal reflection surface with light. It has a side light source and the external side light source which irradiates light to the said external reflective surface, It is characterized by the above-mentioned.

この発明では、導光体の内部と外面に、それぞれ内部反射面と外部反射面とを形成している。また、内部反射面では内部側光源からの光を反射し、外部反射面では外部側光源からの光を反射している。このため、導光体の内部に反射面を形成し、光源からの光を導光体の内部で反射するのみでなく、外面にも反射面を形成して光源からの光を外面でも反射しているので、光源からの光を反射させるために導光体を用いた場合のスペース効率を向上させることができる。この結果、複数の光源からの光を所定の方向に照射しつつ小型化を図ることができる。   In the present invention, an internal reflection surface and an external reflection surface are formed on the inside and the outer surface of the light guide, respectively. The internal reflection surface reflects light from the internal light source, and the external reflection surface reflects light from the external light source. For this reason, a reflective surface is formed inside the light guide, and not only the light from the light source is reflected inside the light guide, but also a reflective surface is formed on the external surface to reflect the light from the light source also on the external surface. Therefore, the space efficiency when the light guide is used to reflect the light from the light source can be improved. As a result, it is possible to reduce the size while irradiating light from a plurality of light sources in a predetermined direction.

また、この発明に係る車両用灯具は、前記外部反射面は、前記導光体を前記内部反射面の反射方向に見た場合に、前記内部反射面とずれた位置に配設されていることを特徴とする。   Further, in the vehicular lamp according to the present invention, the external reflection surface is disposed at a position shifted from the internal reflection surface when the light guide is viewed in the reflection direction of the internal reflection surface. It is characterized by.

この発明では、外部反射面と内部反射面とは、導光体の外面と内部に位置しているため、車両用灯具の照射方向において異なった位置に配置されており、さらに、車両用灯具を内部反射面の反射方向、即ち、車両用灯具の照射方向に見た場合に、内部反射面と外部反射面とをずれた位置に配設している。これにより、内部反射面で反射した光を、外部反射面で遮られることなく導光体の外部に照射できると共に、車両用灯具を当該車両用灯具の照射方向に見た場合に、大部分は内部反射面、或いは外部反射面が位置するようにすることができる。これにより、車両用灯具の照射方向に見た場合に、光を照射しない部分を低減することができる。この結果、照射効率とスペース効率とを、共に向上させることができる。   In this invention, since the external reflection surface and the internal reflection surface are located inside and outside the light guide, they are arranged at different positions in the irradiation direction of the vehicle lamp. When viewed in the reflection direction of the internal reflection surface, that is, the irradiation direction of the vehicular lamp, the internal reflection surface and the external reflection surface are arranged at a shifted position. As a result, the light reflected by the internal reflection surface can be irradiated to the outside of the light guide without being blocked by the external reflection surface, and when the vehicle lamp is viewed in the irradiation direction of the vehicle lamp, most of the An internal reflection surface or an external reflection surface can be located. Thereby, when it sees in the irradiation direction of a vehicle lamp, the part which does not irradiate light can be reduced. As a result, both irradiation efficiency and space efficiency can be improved.

また、この発明に係る車両用灯具は、前記複数の光源は、複数の異なる色の光を照射できるように設けられていることを特徴とする。   The vehicular lamp according to the present invention is characterized in that the plurality of light sources are provided so as to be able to irradiate a plurality of different colors of light.

この発明では、複数の光源が、複数の異なる色を照射できるように設けられている、つまり、内部側光源と外部側光源とで、それぞれ異なった色の光を照射できるように設けられているので、１つの車両用灯具で、複数の色の光を照射することができる。これにより、１つの車両用灯具で、複数の機能を有する車両用灯具にすることができる。この結果、多機能な車両用灯具にすることができる。   In the present invention, the plurality of light sources are provided so as to be able to irradiate a plurality of different colors, that is, provided so that different colors of light can be emitted by the internal light source and the external light source. Therefore, it is possible to irradiate light of a plurality of colors with one vehicle lamp. Thereby, it can be set as the vehicle lamp which has a some function with one vehicle lamp. As a result, a multifunctional vehicle lamp can be obtained.

本発明に係る車両用灯具は、複数の光源からの光を所定の方向に照射しつつ小型化を図ることができる、という効果を奏する。   The vehicular lamp according to the present invention has an effect that it can be downsized while irradiating light from a plurality of light sources in a predetermined direction.

以下に、本発明に係る車両用灯具の実施例を図面に基づいて詳細に説明する。なお、この実施例によりこの発明が限定されるものではない。また、下記実施例における構成要素には、当業者が置換可能かつ容易なもの、或いは実質的に同一のものが含まれる。また、本発明に係る車両用灯具は、様々な車両用灯具が考えられるが、実施例として、車両の後部に装着するストップランプとターンランプとが一体になった車両用灯具を説明する。   Hereinafter, embodiments of a vehicular lamp according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same. Various vehicle lamps can be considered as the vehicle lamp according to the present invention. As an example, a vehicle lamp in which a stop lamp and a turn lamp mounted on the rear part of the vehicle are integrated will be described.

図１は、本発明の実施例に係る車両用灯具の要部断面図である。同図に示す車両用灯具１は、開口部分を有するハウジング５と、当該開口部分に位置すると共に透明な樹脂材料によって形成されたレンズであるアウターレンズ６とが嵌合することにより、ハウジング５内に灯室１５が形成されている。また、ハウジング５内には隔壁１０が設けられており、この隔壁１０によってハウジング５内は、灯室１５と光源室１６とに区画されている。このうち、灯室１５内には、導光体となる導光レンズ２０が複数配設されており、光源室１６には光源となるＬＥＤ（Light Emitting Diode：発光ダイオード）４０が複数配設されている。このＬＥＤ４０は、電源となるバッテリー（図示省略）に電気的に接続されている。   FIG. 1 is a cross-sectional view of a main part of a vehicular lamp according to an embodiment of the present invention. The vehicular lamp 1 shown in FIG. 1 is formed by fitting a housing 5 having an opening portion with an outer lens 6 which is a lens that is located in the opening portion and is formed of a transparent resin material. A lamp chamber 15 is formed in the front. Further, a partition wall 10 is provided in the housing 5, and the interior of the housing 5 is partitioned into a lamp chamber 15 and a light source chamber 16 by the partition wall 10. Among these, a plurality of light guide lenses 20 serving as light guides are disposed in the lamp chamber 15, and a plurality of LEDs (Light Emitting Diodes) 40 serving as light sources are disposed in the light source chamber 16. ing. The LED 40 is electrically connected to a battery (not shown) serving as a power source.

前記隔壁１０には、当該隔壁１０を貫通する孔の形状で形成された導光レンズ固定孔１１と、同様に隔壁１０を貫通する孔の形状で形成されたフレネルレンズ固定孔１２とが形成されている。また、前記導光レンズ２０は、ＰＭＭＡ（Polymetyl-Methacrylate）やＰＣ（Polycarbonate）など透明な樹脂材料によって形成されており、導光部２１と固定部２２とを有している。このうち固定部２２は、導光レンズ固定孔１１と同等の断面形状で導光部２１から突出して設けられており、その先端には、フレネルレンズ状の形状で形成されたフレネルレンズ部２３が設けられている。   The partition wall 10 is formed with a light guide lens fixing hole 11 formed in the shape of a hole penetrating the partition wall 10 and a Fresnel lens fixing hole 12 similarly formed in the shape of a hole penetrating the partition wall 10. ing. The light guide lens 20 is made of a transparent resin material such as PMMA (Polymetyl-Methacrylate) or PC (Polycarbonate), and has a light guide portion 21 and a fixing portion 22. Among these, the fixing portion 22 is provided so as to protrude from the light guide portion 21 with a cross-sectional shape equivalent to that of the light guide lens fixing hole 11, and a Fresnel lens portion 23 formed in a Fresnel lens shape is provided at the tip thereof. Is provided.

また、導光部２１には、固定部２２が突出している方向に沿って形成される平面部２５と、平面部２５に対して約４５°の角度で傾斜した面である斜面部２６とが、それぞれ複数形成されている。また、これらの平面部２５と斜面部２６とは、固定部２２が突出している方向に直交する方向において互いに反対方向に位置する２箇所の側面２４の双方の側面２４に形成されており、各側面２４において複数の平面部２５と複数の斜面部２６とは、固定部２２が突出している方向において交互に形成されている。この双方の側面２４に形成される斜面部２６は、全て同じ方向に傾斜している。   In addition, the light guide portion 21 includes a flat portion 25 formed along the direction in which the fixing portion 22 protrudes, and a slope portion 26 that is a surface inclined at an angle of about 45 ° with respect to the flat portion 25. A plurality of each is formed. In addition, the flat surface portion 25 and the slope portion 26 are formed on both side surfaces 24 of the two side surfaces 24 positioned in opposite directions in the direction orthogonal to the direction in which the fixing portion 22 protrudes. In the side surface 24, the plurality of flat portions 25 and the plurality of slope portions 26 are alternately formed in the direction in which the fixing portion 22 protrudes. The slope portions 26 formed on both side surfaces 24 are all inclined in the same direction.

つまり、２箇所の側面２４のうち一方の側面２４に形成される斜面部２６は、固定部２２から離れる方向に向かうに従って、他方の側面２４から離れるように傾斜しており、もう一方の側面２４に形成される斜面部２６は、固定部２２から離れる方向に向かうに従って、他方の側面２４の方向に向かうように傾斜している。また、導光部２１は２種類の反射面を有しており、外部反射面２７と内部反射面２８とを有している。このうち外部反射面２７は、上記の２箇所の側面２４に形成される斜面部２６のうち、固定部２２が突出している方向において固定部２２から離れるに従って他方の側面２４から離れる方向に傾斜している斜面部２６の外側の面、即ち、導光部２１における外面に形成されている。この外部反射面２７には、アルミ蒸着等で鏡面反射処理が施されている。また、内部反射面２８は、上記の２箇所の側面２４に形成される斜面部２６のうち、固定部２２が突出している方向において固定部２２から離れるに従って他方の側面２４の方向に向かうように傾斜している斜面部２６の内側の面、即ち、導光部２１の内部側の面に形成されている。   That is, the slope portion 26 formed on one side surface 24 of the two side surfaces 24 is inclined so as to move away from the other side surface 24 in the direction away from the fixing portion 22, and the other side surface 24. The inclined surface portion 26 formed in is inclined so as to go in the direction of the other side surface 24 as it goes away from the fixing portion 22. The light guide unit 21 has two types of reflection surfaces, and includes an external reflection surface 27 and an internal reflection surface 28. Among these, the external reflection surface 27 is inclined in a direction away from the other side surface 24 as it is away from the fixing portion 22 in the direction in which the fixing portion 22 protrudes among the slope portions 26 formed on the two side surfaces 24 described above. It is formed on the outer surface of the slope portion 26, that is, the outer surface of the light guide portion 21. The external reflection surface 27 is subjected to a specular reflection process by aluminum vapor deposition or the like. Moreover, the internal reflection surface 28 is directed to the direction of the other side surface 24 as the distance from the fixing portion 22 increases in the direction in which the fixing portion 22 projects out of the slope portions 26 formed on the two side surfaces 24 described above. It is formed on the inner surface of the inclined slope portion 26, that is, the inner surface of the light guide portion 21.

これらの外部反射面２７及び内部反射面２８は、固定部２２の突出方向における位置が異なって設けられている。つまり、外部反射面２７が形成される斜面部２６と、内部反射面２８が形成される斜面部２６とでは、固定部２２の突出方向における位置が異なっており、内部反射面２８が形成される斜面部２６の、固定部２２の突出方向における位置は、固定部２２の突出方向において外部反射面２７側の前記平面部２５が形成されている範囲内となっている（図２参照）。同様に、外部反射面２７が形成される斜面部２６の、固定部２２の突出方向における位置は、固定部２２の突出方向において内部反射面２８側の前記平面部２５が形成されている範囲内となっている。   The external reflection surface 27 and the internal reflection surface 28 are provided at different positions in the protruding direction of the fixing portion 22. That is, the slope portion 26 where the external reflection surface 27 is formed and the slope portion 26 where the internal reflection surface 28 is formed have different positions in the protruding direction of the fixed portion 22, and the internal reflection surface 28 is formed. The position of the slope portion 26 in the protruding direction of the fixed portion 22 is within the range in which the flat portion 25 on the side of the external reflecting surface 27 is formed in the protruding direction of the fixed portion 22 (see FIG. 2). Similarly, the position of the inclined surface portion 26 where the external reflecting surface 27 is formed in the protruding direction of the fixed portion 22 is within the range where the flat surface portion 25 on the internal reflecting surface 28 side is formed in the protruding direction of the fixed portion 22. It has become.

また、内部反射面２８側の側面２４に形成される斜面部２６は、固定部２２が突出している方向において固定部２２から離れるに従って外部反射面２７側の側面２４に向かうように傾斜している。このため、導光レンズ２０の内部反射面２８側の側面２４全体をみると、固定部２２の突出方向において固定部２２から離れるに従って、外部反射面２７側の側面２４に近付く方向に傾いている。これにより、内部反射面２８が形成されている側の側面２４は、固定部２２が突出している方向と直交する方向において、所定の幅を有している。また、固定部２２の先端には、フレネルレンズ部２３が形成されているが、このフレネルレンズ部２３は、固定部２２が突出している方向と直交する方向において、同方向における内部反射面２８が形成されている側の側面２４の幅と同程度の幅で形成されており、また、同方向において前記側面２４が形成されている位置とほぼ同じ位置になるように形成されている。   In addition, the slope portion 26 formed on the side surface 24 on the internal reflection surface 28 side is inclined so as to be directed toward the side surface 24 on the external reflection surface 27 side as it is away from the fixing portion 22 in the direction in which the fixing portion 22 protrudes. . For this reason, when the entire side surface 24 on the inner reflection surface 28 side of the light guide lens 20 is viewed, the distance from the fixing portion 22 in the protruding direction of the fixing portion 22 is inclined toward the side surface 24 on the outer reflecting surface 27 side. . Thereby, the side surface 24 on the side where the internal reflection surface 28 is formed has a predetermined width in a direction orthogonal to the direction in which the fixing portion 22 protrudes. In addition, a Fresnel lens portion 23 is formed at the tip of the fixed portion 22, and the Fresnel lens portion 23 has an internal reflection surface 28 in the same direction in a direction perpendicular to the direction in which the fixed portion 22 projects. It is formed to have a width that is approximately the same as the width of the side surface 24 on the side where it is formed, and is formed to be substantially the same position as the position where the side surface 24 is formed in the same direction.

このように形成される導光レンズ２０をハウジング５に固定する際には、導光部２１が灯室１５側に位置し、さらに、外部反射面２７側の側面２４がアウターレンズ６側に位置する向きで、固定部２２を導光レンズ固定孔１１に挿通固定する。これにより、導光レンズ２０は隔壁１０に固定され、また、導光レンズ２０は、導光部２１が灯室１５内に位置した状態になると共に、外部反射面２７側の側面２４がアウターレンズ６に面する向きでハウジング５に固定される。   When the light guide lens 20 formed in this way is fixed to the housing 5, the light guide portion 21 is located on the lamp chamber 15 side, and the side surface 24 on the external reflection surface 27 side is located on the outer lens 6 side. The fixing portion 22 is inserted and fixed in the light guide lens fixing hole 11 in such a direction. Thereby, the light guide lens 20 is fixed to the partition wall 10, and the light guide lens 20 is in a state where the light guide portion 21 is located in the lamp chamber 15, and the side surface 24 on the external reflection surface 27 side is an outer lens. 6 is fixed to the housing 5 so as to face the housing 6.

また、隔壁１０には、フレネルレンズ固定孔１２が設けられているが、フレネルレンズ固定孔１２は導光レンズ固定孔１１よりもアウターレンズ６寄りに形成されている。また、導光レンズ２０の外部反射面２７側の側面２４に形成される斜面部２６は、固定部２２から離れるに従って内部反射面２８が形成されている側面２４から離れる方向に傾斜している。このため、導光レンズ２０の外部反射面２７側の側面２４全体をみると、固定部２２の突出方向において固定部２２から離れるに従って、アウターレンズ６に近付く方向に傾いている。   The partition 10 is provided with a Fresnel lens fixing hole 12, and the Fresnel lens fixing hole 12 is formed closer to the outer lens 6 than the light guide lens fixing hole 11. In addition, the slope portion 26 formed on the side surface 24 on the external reflection surface 27 side of the light guide lens 20 is inclined in a direction away from the side surface 24 on which the internal reflection surface 28 is formed as the distance from the fixing portion 22 increases. For this reason, when the entire side surface 24 on the external reflection surface 27 side of the light guide lens 20 is viewed, it is inclined toward the outer lens 6 as the distance from the fixing portion 22 increases in the protruding direction of the fixing portion 22.

ここで、フレネルレンズ固定孔１２は、上記のように導光レンズ固定孔１１よりもアウターレンズ６寄りに形成されているが、その位置は、導光レンズ２０において固定部２２から離れるに従ってアウターレンズ６に近付くように傾いている外部反射面２７側の側面２４の、光源室１６方向に位置するように形成されている。また、固定部２２が突出している方向と直交する方向、或いは、導光レンズ固定孔１１からアウターレンズ６方向に向かう方向におけるフレネルレンズ固定孔１２の幅は、同方向における外部反射面２７が形成されている側の側面２４の幅と同程度の幅で形成されている。   Here, the Fresnel lens fixing hole 12 is formed closer to the outer lens 6 than the light guide lens fixing hole 11 as described above, but the position of the outer lens increases as the distance from the fixing portion 22 in the light guide lens 20 increases. 6 is formed so as to be positioned in the direction of the light source chamber 16 on the side surface 24 on the side of the external reflecting surface 27 inclined so as to approach the light source 6. Further, the width of the Fresnel lens fixing hole 12 in the direction orthogonal to the direction in which the fixing portion 22 protrudes or in the direction from the light guide lens fixing hole 11 toward the outer lens 6 is formed by the external reflection surface 27 in the same direction. It is formed with a width approximately the same as the width of the side surface 24 on the side.

このように形成されるフレネルレンズ固定孔１２には、透明な樹脂材料によって形成されたフレネルレンズ３０が挿通固定される。このフレネルレンズ３０は、フレネルレンズ固定孔１２の形状と同様な形状で形成されている。このため、フレネルレンズ固定孔１２に挿通固定されたフレネルレンズ３０もフレネルレンズ固定孔１２と同様に、導光レンズ固定孔１１からアウターレンズ６方向に向かう方向における幅が、同方向における外部反射面２７が形成されている側の側面２４の幅と同程度の幅となっており、この形状で、外部反射面２７側の側面２４の、光源室１６方向に位置している。   A Fresnel lens 30 formed of a transparent resin material is inserted and fixed in the Fresnel lens fixing hole 12 formed in this way. The Fresnel lens 30 is formed in a shape similar to the shape of the Fresnel lens fixing hole 12. Therefore, similarly to the Fresnel lens fixing hole 12, the Fresnel lens 30 inserted and fixed in the Fresnel lens fixing hole 12 has a width in the direction from the light guide lens fixing hole 11 toward the outer lens 6 in the same direction. The width is approximately the same as the width of the side surface 24 on the side on which 27 is formed. In this shape, the side surface 24 on the side of the external reflection surface 27 is positioned in the direction of the light source chamber 16.

隔壁１０の導光レンズ固定孔１１に挿通固定される導光レンズ２０のフレネルレンズ部２３、及びフレネルレンズ固定孔１２に挿通固定されたフレネルレンズ３０は、ハウジング５内において隔壁１０によって区画された光源室１６に露出している。また、光源室１６内に配設されるＬＥＤ４０は、フレネルレンズ部２３とフレネルレンズ３０に対応して、これらと同数が設けられている。このように設けられる各ＬＥＤ４０は、導光レンズ２０の固定部２２が導光部２１から突出している方向において、導光レンズ２０のフレネルレンズ部２３、或いは、フレネルレンズ３０の光源室１６側の面に位置して、フレネルレンズ部２３、或いは、フレネルレンズ３０に対向するように配設されている。また、これらの複数のＬＥＤ４０のうち、フレネルレンズ３０に対向しているＬＥＤ４０は、外部側光源であるストップ側ＬＥＤ４１として設けられており、フレネルレンズ部２３に対向しているＬＥＤ４０は、内部側光源であるターン側ＬＥＤ４２として設けられている。このうち、ストップ側ＬＥＤ４１は、発光時に赤色光を発光し、ターン側ＬＥＤ４２は、アンバー色の光を発光する。   The Fresnel lens portion 23 of the light guide lens 20 inserted and fixed in the light guide lens fixing hole 11 of the partition wall 10 and the Fresnel lens 30 inserted and fixed in the Fresnel lens fixing hole 12 were partitioned by the partition wall 10 in the housing 5. The light source chamber 16 is exposed. Further, the LEDs 40 arranged in the light source chamber 16 are provided in the same number corresponding to the Fresnel lens portion 23 and the Fresnel lens 30. Each LED 40 provided in this way has a Fresnel lens portion 23 of the light guide lens 20 or a light source chamber 16 side of the Fresnel lens 30 in the direction in which the fixing portion 22 of the light guide lens 20 protrudes from the light guide portion 21. It is disposed on the surface so as to face the Fresnel lens portion 23 or the Fresnel lens 30. Of these LEDs 40, the LED 40 that faces the Fresnel lens 30 is provided as a stop-side LED 41 that is an external light source, and the LED 40 that faces the Fresnel lens portion 23 is an internal light source. It is provided as turn side LED42 which is. Among these, the stop-side LED 41 emits red light during light emission, and the turn-side LED 42 emits amber light.

図２は、図１のＡ−Ａ断面図である。また、導光レンズ２０は、上述した状態でハウジング５に３つ固定されており、アウターレンズ６側から見た場合に、３つの導光レンズ２０は互いに重ならないように並んで形成されている。詳しくは、導光レンズ２０の導光部２１から固定部２２が突出している方向を高さ方向とし、固定部２２が突出している方向と直交すると共にアウターレンズ６から導光レンズ２０に向かう方向を厚さ方向とし、高さ方向と厚さ方向との両方向に直交する方向を幅方向とした場合において、３つの導光レンズ２０は、幅方向に並んで配設されている。これに伴いフレネルレンズ３０、ストップ側ＬＥＤ４１及びターン側ＬＥＤ４２は、それぞれ３つずつ設けられており、それぞれ幅方向において１つの導光レンズ２０に対して１つずつ配設されるように設けられている。また、幅方向におけるフレネルレンズ３０の幅、及び固定部２２に形成されたフレネルレンズ部２３の幅は、導光レンズ２０の導光部２１の同方向における幅と同程度の幅になっている。   FIG. 2 is a cross-sectional view taken along the line AA of FIG. The three light guide lenses 20 are fixed to the housing 5 in the above-described state, and the three light guide lenses 20 are formed side by side so as not to overlap each other when viewed from the outer lens 6 side. . Specifically, the direction in which the fixed portion 22 protrudes from the light guide portion 21 of the light guide lens 20 is defined as the height direction, the direction orthogonal to the direction in which the fixed portion 22 protrudes and the direction from the outer lens 6 toward the light guide lens 20. Is the thickness direction, and the width direction is a direction orthogonal to both the height direction and the thickness direction, the three light guide lenses 20 are arranged side by side in the width direction. Accordingly, the Fresnel lens 30, the stop-side LED 41, and the turn-side LED 42 are provided in three each, and are provided so as to be provided one for each light guide lens 20 in the width direction. Yes. Further, the width of the Fresnel lens 30 in the width direction and the width of the Fresnel lens portion 23 formed in the fixed portion 22 are approximately the same as the width of the light guide portion 21 of the light guide lens 20 in the same direction. .

図３は、図１に係る車両用灯具の点灯時の状態を示す図である。この実施例に係る車両用灯具１は、以上のごとき構成からなり、以下、その作用について説明する。前記車両用灯具１をターンランプとして使用する場合には、まず、ターン側ＬＥＤ４１を発光させる。ターン側ＬＥＤ４１が発光すると、ターン側ＬＥＤ４１からの光はフレネルレンズ部２３から導光レンズ２０内に入射される。その際に、ターン側ＬＥＤ４２から出射された光は拡散しながら出射されるが、この光はフレネルレンズ部２３を通過する際にフレネルレンズ部２３で向きを変えられ、フレネルレンズ部２３でほぼ平行に進行する光となる。このフレネルレンズ部２３は、幅方向における幅が導光部２１の同方向における幅と同程度の幅になっており、厚さ方向におけるフレネルレンズ部２３の幅は、同方向における内部反射面２８側の側面２４が形成されている範囲と同程度の幅になっている。さらに、フレネルレンズ部２３は、厚さ方向において内部反射面２８側の側面２４が形成されている位置とほぼ同じ位置になるように形成されているため、フレネルレンズ部２３で向きを変えられることにより平行な光となったターン側ＬＥＤ４２からの光は、導光レンズ２０内を通って内部反射面２８が形成されている側の側面２４の内側の面の方向に進行し、この側面２４の内側の面に対して照射する。   FIG. 3 is a diagram illustrating a state when the vehicular lamp according to FIG. 1 is turned on. The vehicular lamp 1 according to this embodiment is configured as described above, and the operation thereof will be described below. When the vehicle lamp 1 is used as a turn lamp, first, the turn side LED 41 is caused to emit light. When the turn-side LED 41 emits light, the light from the turn-side LED 41 enters the light guide lens 20 from the Fresnel lens portion 23. At this time, the light emitted from the turn-side LED 42 is emitted while being diffused, but this light is redirected by the Fresnel lens unit 23 when passing through the Fresnel lens unit 23, and is substantially parallel by the Fresnel lens unit 23. The light that travels to The width in the width direction of the Fresnel lens portion 23 is approximately the same as the width of the light guide portion 21 in the same direction. The width of the Fresnel lens portion 23 in the thickness direction is the internal reflection surface 28 in the same direction. The width is about the same as the range in which the side surface 24 is formed. Furthermore, since the Fresnel lens portion 23 is formed so as to be substantially the same position as the position where the side surface 24 on the internal reflection surface 28 side is formed in the thickness direction, the direction of the Fresnel lens portion 23 can be changed. The light from the turn-side LED 42 that has become parallel light travels in the direction of the inner surface of the side surface 24 on the side where the internal reflection surface 28 is formed through the light guide lens 20. Irradiate the inner surface.

ターン側ＬＥＤ４２からの光は、このように内部反射面２８が形成されている側の側面２４の内側の面の方向に進行するが、この側面２４には、斜面部２６と平面部２５とが形成されており、導光レンズ２０内を通るターン側ＬＥＤ４２の光は、平面部２５の形成方向とほぼ平行な方向に進行する。このため、この光が平面部２５付近を通過する際には、向きを変えずにそのまま通過する。   The light from the turn-side LED 42 travels in the direction of the inner surface of the side surface 24 on the side where the internal reflection surface 28 is formed in this way, and the side surface 24 has a slope portion 26 and a flat surface portion 25. The light of the turn-side LED 42 that is formed and passes through the light guide lens 20 travels in a direction substantially parallel to the direction in which the planar portion 25 is formed. For this reason, when this light passes through the vicinity of the flat portion 25, it passes through without changing its direction.

また、内部反射面２８が形成される斜面部２６は、固定部２２から離れる方向に向かうに従って外部反射面２７側の側面２４に向かうように平面部２５に対して４５°の角度で傾斜しており、内部反射面２８は斜面部２６の内側の面に形成されているため、導光レンズ２０内を通るターン側ＬＥＤ４２の光は内部反射面２８に対して４５°角度で当たる。ここで、導光レンズ２０は、ＰＭＭＡなどの透明な樹脂材料で形成されているため、屈折率が１．５程度となっている。一方、導光レンズ２０の周囲の空気は、屈折率が１．０程度であるため、導光レンズ２０内を通る光が内部反射面２８に対して４５°の角度で当たると臨界角以上の角度で内部反射面２８に当たることになり、この光は内部反射面２８で全反射する。このように、導光レンズ２０内を通るターン側ＬＥＤ４２の光は内部反射面２８に当たった際に全反射し、この全反射によって外部反射面２７側の側面２４の方向に９０°進行方向を変える。   Further, the inclined surface portion 26 on which the internal reflection surface 28 is formed is inclined at an angle of 45 ° with respect to the flat surface portion 25 so as to go to the side surface 24 on the external reflection surface 27 side as going away from the fixed portion 22. In addition, since the internal reflection surface 28 is formed on the inner surface of the slope portion 26, the light of the turn-side LED 42 passing through the light guide lens 20 strikes the internal reflection surface 28 at an angle of 45 °. Here, since the light guide lens 20 is formed of a transparent resin material such as PMMA, the refractive index is about 1.5. On the other hand, since the air around the light guide lens 20 has a refractive index of about 1.0, when the light passing through the light guide lens 20 hits the internal reflection surface 28 at an angle of 45 °, the air exceeds the critical angle. The light hits the internal reflection surface 28 at an angle, and this light is totally reflected by the internal reflection surface 28. In this way, the light of the turn-side LED 42 passing through the light guide lens 20 is totally reflected when it hits the internal reflection surface 28, and this total reflection causes a 90 ° traveling direction in the direction of the side surface 24 on the external reflection surface 27 side. Change.

また、内部反射面２８と外部反射面２７とは、固定部２２の突出方向、即ち高さ方向における位置が異なっており、内部反射面２８が形成されている斜面部２６は、高さ方向において、外部反射面２７側の側面２４に形成される平面部２５が形成されている範囲内に位置している。このため、内部反射面２８で進行方向を変えられたターン側ＬＥＤ４２からの光は、外部反射面２７側の側面２４の平面部２５の方向に進行し、この平面部２５から導光レンズ２０の外側に出射する。その際に、内部反射面２８によって向きを変えられた光は、外部反射面２７側の側面２４の平面部２５に対して約９０°の角度で当たるので、この光が平面部２５から出射する際には屈折せずに、内部反射面２８で全反射することにより向きを変えられた進行方向を維持した状態で導光レンズ２０から出射する。   Further, the internal reflection surface 28 and the external reflection surface 27 are different in the protruding direction of the fixed portion 22, that is, in the height direction, and the slope portion 26 on which the internal reflection surface 28 is formed is in the height direction. The flat portion 25 formed on the side surface 24 on the external reflection surface 27 side is located within the range in which it is formed. For this reason, the light from the turn-side LED 42 whose traveling direction is changed by the internal reflection surface 28 travels in the direction of the flat surface portion 25 of the side surface 24 on the external reflection surface 27 side. Emits outside. At that time, the light whose direction has been changed by the internal reflection surface 28 strikes the flat portion 25 of the side surface 24 on the external reflection surface 27 side at an angle of about 90 °, so that this light is emitted from the flat portion 25. In some cases, the light is not refracted but is emitted from the light guide lens 20 in a state in which the traveling direction changed in direction by being totally reflected by the internal reflection surface 28 is maintained.

さらに、導光レンズ２０から出射したターン側ＬＥＤ４２からの光の進行方向にはアウターレンズ６が位置している。このアウターレンズ６は、透明な樹脂材料によって形成されているため、導光レンズ２０から出射し、アウターレンズ６に到達したターン側ＬＥＤ４２からの光は、アウターレンズ６を透過し、車両用灯具１の外部に出射する。これにより、車両用灯具１からは、ターンランプ用の光となるアンバー色の光を外部に対して照射する。   Further, the outer lens 6 is positioned in the traveling direction of the light from the turn-side LED 42 emitted from the light guide lens 20. Since the outer lens 6 is formed of a transparent resin material, the light from the turn-side LED 42 that is emitted from the light guide lens 20 and reaches the outer lens 6 is transmitted through the outer lens 6, and the vehicular lamp 1. To the outside. As a result, the vehicular lamp 1 irradiates the outside with amber-colored light that serves as light for the turn lamp.

また、車両用灯具１をストップランプとして使用する場合には、ストップ側ＬＥＤ４１を発光させる。ストップ側ＬＥＤ４１が発光すると、ストップ側ＬＥＤ４１からの光は透明な樹脂材料によって形成されたフレネルレンズ３０を透過し、灯室１５内に入る。その際に、ストップ側ＬＥＤ４１から出射された光は拡散しながら出射されるが、この光はフレネルレンズ３０を透過する際にフレネルレンズ３０で向きを変えられ、ほぼ平行に進行する光になる。このフレネルレンズ３０は、幅方向における幅が導光部の同方向における幅と同程度の幅になっており、厚さ方向におけるフレネルレンズ３０の幅は、同方向における外部反射面２７側の側面２４が形成されている範囲と同程度の幅になっている。さらに、フレネルレンズ３０は、厚さ方向において外部反射面２７側の側面２４が形成されている位置とほぼ同じ位置になるように形成されているため、フレネルレンズ３０で向きを変えられることにより平行な光となったストップ側ＬＥＤ４１からの光は、灯室１５内を通って外部反射面２７が形成されている側の側面２４の外側の面の方向に進行し、この側面２４の外側の面に対して照射する。   When the vehicular lamp 1 is used as a stop lamp, the stop side LED 41 is caused to emit light. When the stop-side LED 41 emits light, the light from the stop-side LED 41 passes through the Fresnel lens 30 formed of a transparent resin material and enters the lamp chamber 15. At this time, the light emitted from the stop-side LED 41 is emitted while being diffused, but this light is changed in direction by the Fresnel lens 30 when passing through the Fresnel lens 30, and becomes light that travels substantially in parallel. The width of the Fresnel lens 30 in the width direction is approximately the same as the width of the light guide unit in the same direction, and the width of the Fresnel lens 30 in the thickness direction is the side surface on the external reflection surface 27 side in the same direction. The width is about the same as the range in which 24 is formed. Further, since the Fresnel lens 30 is formed so as to be substantially in the same position as the position where the side surface 24 on the external reflection surface 27 side is formed in the thickness direction, the Fresnel lens 30 is parallel when the orientation is changed. The light from the stop-side LED 41 that has become light travels through the lamp chamber 15 in the direction of the outer surface of the side surface 24 on the side where the external reflecting surface 27 is formed, and the outer surface of the side surface 24. Irradiate against.

ストップ側ＬＥＤ４１からの光は、このように外部反射面２７が形成されている側の側面２４の外側の面の方向に進行するが、この側面２４には、斜面部２６と平面部２５とが形成されており、灯室１５内を通るストップ側ＬＥＤ４１の光は、平面部２５の形成方向とほぼ平行な方向に進行する。このため、この光が平面部２５付近を通過する際には、向きを変えずにそのまま通過する。   The light from the stop-side LED 41 travels in the direction of the outer surface of the side surface 24 on the side where the external reflection surface 27 is formed in this way, and the side surface 24 has a slope portion 26 and a flat surface portion 25. The light of the stop side LED 41 that is formed and passes through the lamp chamber 15 travels in a direction substantially parallel to the direction in which the flat portion 25 is formed. For this reason, when this light passes through the vicinity of the flat portion 25, it passes through without changing its direction.

また、外部反射面２７が形成されている斜面部２６は、固定部２２から離れる方向に向かうに従って内部反射面２８側の側面２４から離れるように平面部２５に対して４５°の角度で傾斜しており、外部反射面２７は斜面部２６の外側の面に形成されているため、灯室１５内を通るストップ側ＬＥＤ４１の光は外部反射面２７に対して４５°角度で当たる。この外部反射面２７には、アルミ蒸着等で鏡面反射処理が施されているため、外部反射面２７に当たった光は全反射し、アウターレンズ６の方向に９０°進行方向を変える。   In addition, the inclined surface portion 26 on which the external reflection surface 27 is formed is inclined at an angle of 45 ° with respect to the flat surface portion 25 so as to be separated from the side surface 24 on the internal reflection surface 28 side in the direction away from the fixing portion 22. Since the external reflection surface 27 is formed on the outer surface of the slope portion 26, the light of the stop-side LED 41 passing through the lamp chamber 15 strikes the external reflection surface 27 at an angle of 45 °. Since the external reflection surface 27 is subjected to a mirror reflection process by aluminum vapor deposition or the like, the light hitting the external reflection surface 27 is totally reflected and changes the traveling direction by 90 ° in the direction of the outer lens 6.

このように、外部反射面２７によって進行方向が変えられたストップ側ＬＥＤ４１からの光の進行方向には、透明な樹脂材料によって形成されたアウターレンズ６が位置しているため、この光はアウターレンズ６を透過し、車両用灯具１の外部に出射する。これにより、車両用灯具１からは、ストップランプ用の光となる赤色光を外部に対して照射する。   Thus, since the outer lens 6 formed of a transparent resin material is positioned in the traveling direction of the light from the stop-side LED 41 whose traveling direction has been changed by the external reflecting surface 27, this light is transmitted to the outer lens. 6 is transmitted to the outside of the vehicular lamp 1. As a result, the vehicular lamp 1 irradiates the outside with red light that is light for the stop lamp.

以上の車両用灯具１は、導光レンズ２０の内部側の面と外部側の面に、それぞれ内部反射面２８と外部反射面２７とを形成し、光源として、内部側光源であるターン側ＬＥＤ４２と外部側光源であるストップ側ＬＥＤ４１と設けている。また、ターン側ＬＥＤ４２からの光は内部反射面２８の方向に進行させて内部反射面２８に対して照射するようにし、ストップ側ＬＥＤ４１からの光は外部反射面２７の方向に進行させて外部反射面２７に対して照射するようにしている。これにより、内部反射面２８ではターン側ＬＥＤ４２からの光を反射させ、外部反射面２７ではストップ側ＬＥＤ４１からの光を反射させている。このため、導光レンズ２０の内部に内部反射面２８を形成し、ＬＥＤ４０、即ち光源からの光を導光レンズ２０の内部で反射するのみでなく、外面にも外部反射面２７を形成して光源からの光を導光レンズ２０の外面でも反射しているので、光源からの光を反射させるために導光レンズ２０を用いた場合のスペース効率を向上させることができる。この結果、複数の光源からの光を所定の方向に照射しつつ小型化を図ることができる。   The vehicular lamp 1 described above forms the internal reflection surface 28 and the external reflection surface 27 on the inner side surface and the outer side surface of the light guide lens 20, respectively, and as a light source, a turn side LED 42 which is an inner side light source. And a stop side LED 41 which is an external light source. Further, the light from the turn side LED 42 travels in the direction of the internal reflection surface 28 to irradiate the internal reflection surface 28, and the light from the stop side LED 41 travels in the direction of the external reflection surface 27 to reflect externally. The surface 27 is irradiated. Thereby, the light from the turn side LED 42 is reflected on the internal reflection surface 28, and the light from the stop side LED 41 is reflected on the external reflection surface 27. For this reason, the internal reflection surface 28 is formed inside the light guide lens 20, and not only the LED 40, that is, the light from the light source is reflected inside the light guide lens 20, but also the external reflection surface 27 is formed on the outer surface. Since the light from the light source is also reflected on the outer surface of the light guide lens 20, the space efficiency when the light guide lens 20 is used to reflect the light from the light source can be improved. As a result, it is possible to reduce the size while irradiating light from a plurality of light sources in a predetermined direction.

また、外部反射面２７と内部反射面２８とは、導光レンズ２０において互いに反対方向に面する２箇所の異なった側面２４における外面と内部に位置しているため、車両用灯具１の照射方向において異なった位置に配置されている。さらに、車両用灯具１を外部反射面２７や内部反射面２８の反射方向に見た場合、或いは、アウターレンズ６側から導光レンズ２０を見た場合に、内部反射面２８と外部反射面２７とを、高さ方向においてずれた位置に配設している。これにより、内部反射面２８で反射したターン側ＬＥＤ４２からの光を、外部反射面２７で遮られることなく導光レンズ２０の外部に照射できる。また、このように、内部反射面２８と外部反射面２７とを、高さ方向においてずれた位置に配設することにより、アウターレンズ６側から導光レンズ２０を見た場合に、導光レンズ２０の多くの部分を、内部反射面２８、或いは外部反射面２７が位置する状態にすることができる。これにより、アウターレンズ６側から導光レンズ２０の方向を見た場合、或いは、車両用灯具１を当該車両用灯具１の照射方向に見た場合に、光を照射しない部分を低減することができる。この結果、照射効率とスペース効率とを、共に向上させることができる。   Further, since the external reflection surface 27 and the internal reflection surface 28 are located on the outer surface and the inside of two different side surfaces 24 facing in opposite directions in the light guide lens 20, the irradiation direction of the vehicular lamp 1 Are arranged at different positions. Further, when the vehicular lamp 1 is viewed in the reflection direction of the external reflection surface 27 and the internal reflection surface 28 or when the light guide lens 20 is viewed from the outer lens 6 side, the internal reflection surface 28 and the external reflection surface 27 are displayed. Are disposed at positions shifted in the height direction. Thereby, the light from the turn-side LED 42 reflected by the internal reflection surface 28 can be irradiated to the outside of the light guide lens 20 without being blocked by the external reflection surface 27. Further, when the light guide lens 20 is viewed from the outer lens 6 side by disposing the internal reflection surface 28 and the external reflection surface 27 at positions shifted in the height direction in this way, the light guide lens. Many portions of 20 can be in a state in which the internal reflection surface 28 or the external reflection surface 27 is located. Thereby, when the direction of the light guide lens 20 is viewed from the outer lens 6 side, or when the vehicular lamp 1 is viewed in the irradiation direction of the vehicular lamp 1, a portion that does not irradiate light can be reduced. it can. As a result, both irradiation efficiency and space efficiency can be improved.

また、複数の光源として、それぞれ異なる色で発光するストップ側ＬＥＤ４１とターン側ＬＥＤ４２とが設けられている。このため、内部側光源と外部側光源とで、それぞれ異なった色の光を反射し、異なった色で外部に対して照射きるように設けられているので、１つの車両用灯具１で、複数の色の光を照射することができる。これにより、１つの車両用灯具１で、複数の機能を有する車両用灯具１にすることができる。この結果、多機能な車両用灯具１にすることができる。   Further, a stop-side LED 41 and a turn-side LED 42 that emit light of different colors are provided as a plurality of light sources. For this reason, since the internal light source and the external light source are provided so as to reflect different colors of light and irradiate the external with different colors, a single vehicular lamp 1 can be used. The light of the color can be irradiated. Thereby, the vehicular lamp 1 having a plurality of functions can be obtained with one vehicular lamp 1. As a result, a multifunctional vehicle lamp 1 can be obtained.

図４は、実施例に係る車両用灯具の変形例を示す図である。なお、実施例に係る車両用灯具１では、導光レンズ２０の固定部２２の先端にフレネルレンズ部２３を形成し、発光時には拡散しているターン側ＬＥＤ４２からの光は、フレネルレンズ部２３によって平行な光にしているが、フレネルレンズ部２３以外で拡散している光を平行な光にしてもよい。例えば、図４に示すように、導光レンズ２０の固定部２２の先端には、固定部反射面５１とＲ部５２とを設けてもよい。つまり、固定部２２を、ターン側ＬＥＤ４２の方向に突出すると共に内側の形状が放物面の形状になるように形成にし、その先端に、曲面状の形状で凹んだ部分であるＲ部５２を形成してもよい。ターン側ＬＥＤ４２の発光部分は、このＲ部５２内に位置するように配設し、Ｒ部５２は、この状態におけるターン側ＬＥＤ４２の発光部分付近に中心が位置する曲面の形状で形成する。また、固定部２２の内側の形状である放物面は、この状態におけるターン側ＬＥＤ４２の発光部分付近に焦点が位置する形状になっており、この固定部２２の内側部分の面は、固定部反射面５１となっている。   FIG. 4 is a diagram illustrating a modification of the vehicular lamp according to the embodiment. In the vehicular lamp 1 according to the embodiment, the Fresnel lens portion 23 is formed at the tip of the fixing portion 22 of the light guide lens 20, and the light from the turn-side LED 42 that is diffused during light emission is transmitted by the Fresnel lens portion 23. Although the light is parallel, the light diffusing other than the Fresnel lens portion 23 may be parallel light. For example, as shown in FIG. 4, a fixed portion reflecting surface 51 and an R portion 52 may be provided at the tip of the fixed portion 22 of the light guide lens 20. That is, the fixing portion 22 is formed so as to protrude in the direction of the turn-side LED 42 and the inner shape thereof is a parabolic shape, and an R portion 52 that is a concave portion with a curved shape is formed at the tip thereof. It may be formed. The light-emitting portion of the turn-side LED 42 is disposed so as to be positioned in the R portion 52, and the R portion 52 is formed in a curved shape whose center is located near the light-emitting portion of the turn-side LED 42 in this state. The paraboloid which is the shape inside the fixed portion 22 has a shape in which the focal point is located near the light emitting portion of the turn-side LED 42 in this state, and the surface of the inner portion of the fixed portion 22 is the fixed portion. A reflective surface 51 is formed.

この状態のターン側ＬＥＤ４２を点灯すると、ターン側ＬＥＤ４２からの光は、Ｒ部５２から導光レンズ２０内に入る。その際に、Ｒ部５２は、ターン側ＬＥＤ４２付近に中心が位置する曲面の形状で形成されているため、ターン側ＬＥＤ４２からの光は、Ｒ部５２を形成するいずれの面に対しても垂直に当たることになり、Ｒ部５２から導光レンズ２０内に入射される光は、Ｒ部５２の面に対して垂直に入射される。このため、Ｒ部５２を形成する面での反射は小さくなっている。Ｒ部５２から導光レンズ２０内に入射したターン側ＬＥＤ４２からの光の一部は、内部反射面２８が形成されている側面２４の方向に進行し、また、他の一部の光は、固定部反射面５１の方向に進行する。固定部反射面５１の方向に進行し、固定部反射面５１に到達した光は、この部分で反射して向きを変える。その向きは、固定部反射面５１の形状が、ターン側ＬＥＤ４２の発光部分付近に焦点が位置する放物面の形状になっているため、固定部反射面５１で反射した光は平行な光となり、内部反射面２８が形成されている側面２４の方向に進行し、この側面２４の内側の面に対して照射する。これにより、ターン側ＬＥＤ４２からの光は内部反射面２８で反射して９０°進行方向を変え、外部反射面２７側の側面２４の平面部２５から出射し、アウターレンズ６を透過して車両用灯具１の外部に対して出射する。   When the turn-side LED 42 in this state is turned on, light from the turn-side LED 42 enters the light guide lens 20 from the R portion 52. At that time, since the R portion 52 is formed in a curved shape whose center is located in the vicinity of the turn side LED 42, the light from the turn side LED 42 is perpendicular to any surface forming the R portion 52. The light incident on the light guide lens 20 from the R portion 52 is incident perpendicularly to the surface of the R portion 52. For this reason, reflection on the surface forming the R portion 52 is small. Part of the light from the turn-side LED 42 that enters the light guide lens 20 from the R portion 52 travels in the direction of the side surface 24 on which the internal reflection surface 28 is formed, and the other part of the light is It proceeds in the direction of the fixed part reflection surface 51. The light that travels in the direction of the fixed portion reflecting surface 51 and reaches the fixed portion reflecting surface 51 is reflected by this portion and changes its direction. The orientation of the fixed portion reflecting surface 51 is a parabolic shape in which the focal point is located in the vicinity of the light emitting portion of the turn-side LED 42. Therefore, the light reflected by the fixed portion reflecting surface 51 becomes parallel light. , It proceeds in the direction of the side surface 24 on which the internal reflection surface 28 is formed, and irradiates the inner surface of the side surface 24. Thereby, the light from the turn side LED 42 is reflected by the internal reflection surface 28 to change the traveling direction by 90 °, is emitted from the flat portion 25 of the side surface 24 on the external reflection surface 27 side, passes through the outer lens 6 and is used for the vehicle. The light is emitted to the outside of the lamp 1.

以上のように、導光レンズ２０の固定部２２にＲ部５２と固定部反射面５１とを形成することにより、ターン側ＬＥＤ４２からの光は、Ｒ部５２に対して垂直に当たり、Ｒ部５２でほとんど反射することなく導光レンズ２０内に入射し、導光レンズ２０内に入射した光を固定部反射面５１で内部反射面２８が設けられる側面２４の方向に反射することができる。この結果、導光レンズ２０内への光の入射時の損失を低減することができ、光源からの光によって効率よく外部を照射できるので、車両用灯具１の高効率化を図ることができる。   As described above, by forming the R portion 52 and the fixed portion reflecting surface 51 on the fixed portion 22 of the light guide lens 20, the light from the turn-side LED 42 hits the R portion 52 perpendicularly, and the R portion 52. Therefore, the light incident on the light guide lens 20 can be reflected in the direction of the side surface 24 on which the internal reflection surface 28 is provided by the fixed portion reflection surface 51. As a result, it is possible to reduce a loss at the time of incidence of light into the light guide lens 20 and efficiently irradiate the outside with light from the light source, so that the efficiency of the vehicular lamp 1 can be increased.

図５は、実施例に係る車両用灯具の変形例を示す図である。図６は、図５に車両用灯具のターン側ＬＥＤが発光した状態を示す図である。また、実施例に係る車両用灯具１では、内部反射面２８で反射したターン側ＬＥＤ４２からの光は、外部反射面２７側の側面２４に形成される平面部２５から向きを変えずに出射するが、平面部２５では、内部反射面２８で反射した光の向きを変えて出射させてもよい。例えば、図５に示すように、外部反射面２７側の側面２４の平面部２５における内部反射面２８で反射した光が出射する部分に拡散部６０を設けてもよい。この拡散部６０は、導光レンズ２０を灯室１５内に配設した状態において平面部２５からアウターレンズ６の方向に凸となる曲面状の表面形状を有する形状で、外部反射面２７側の側面２４部の平面部２５に形成されている。   FIG. 5 is a diagram illustrating a modification of the vehicular lamp according to the embodiment. FIG. 6 is a diagram illustrating a state in which the turn-side LED of the vehicle lamp emits light in FIG. 5. In the vehicular lamp 1 according to the embodiment, the light from the turn-side LED 42 reflected by the internal reflection surface 28 is emitted without changing the direction from the flat portion 25 formed on the side surface 24 on the external reflection surface 27 side. However, in the plane portion 25, the direction of the light reflected by the internal reflection surface 28 may be changed and emitted. For example, as shown in FIG. 5, a diffusing portion 60 may be provided in a portion where the light reflected by the internal reflection surface 28 in the flat portion 25 of the side surface 24 on the external reflection surface 27 side is emitted. The diffusing portion 60 has a curved surface shape that is convex in the direction from the flat portion 25 to the outer lens 6 in a state in which the light guide lens 20 is disposed in the lamp chamber 15, and is disposed on the external reflecting surface 27 side. It is formed on the flat surface portion 25 of the side surface 24 portion.

このように拡散部６０が形成された車両用灯具１の内部側光源であるターン側ＬＥＤ４２を点灯すると、ターン側ＬＥＤ４２の光は内部反射面２８で反射し、内部反射面２８で進行方向を変えて外部反射面２７側の側面２４の平面部２５に向かう。内部反射面２８で反射した光が平面部２５から出射する際には、この光は拡散部６０を通って出射する。拡散部６０は、上記のように表面形状が曲面状の形状で形成されているので、内部反射面２８で反射した光は、拡散部６０を通過する際に進行方向を変えられ、拡散して出射する。これにより、ターン側ＬＥＤ４２からの光は、アウターレンズ６から外部に出射する際に、拡散した状態で出射する。この結果、広い範囲でターン側ＬＥＤ４２からの光を視認することができ、内部側光源であるターン側ＬＥＤ４２からの光の被視認性の向上を図ることができる。   When the turn-side LED 42 that is the internal light source of the vehicular lamp 1 thus formed with the diffusing portion 60 is turned on, the light of the turn-side LED 42 is reflected by the internal reflection surface 28 and the traveling direction is changed by the internal reflection surface 28. To the flat portion 25 of the side surface 24 on the external reflection surface 27 side. When the light reflected by the internal reflection surface 28 is emitted from the flat portion 25, this light is emitted through the diffusion portion 60. Since the diffusing unit 60 is formed in a curved surface shape as described above, the light reflected by the internal reflection surface 28 has its traveling direction changed when it passes through the diffusing unit 60 and is diffused. Exit. Thereby, the light from the turn-side LED 42 is emitted in a diffused state when emitted from the outer lens 6 to the outside. As a result, the light from the turn-side LED 42 can be visually recognized in a wide range, and the visibility of the light from the turn-side LED 42 that is an internal light source can be improved.

図７は、実施例に係る車両用灯具の変形例を示す図である。また、実施例に係る車両用灯具１では、光源からの光を導光レンズ２０に対して１方向から照射しているのみであるが、複数の方向から照射してもよい。例えば、実施例に係る車両用灯具１の導光レンズ２０は１つの固定部２２にフレネルレンズ部２３を設け、このフレネルレンズ部２３の方向からの光を反射できるように外部反射面２７及び内部反射面２８を形成しているが、図７に示すように、固定部２２及びフレネルレンズ部２３を導光レンズ２０の両端部分に設け、この両端部分に位置するフレネルレンズ部２３の方向からの光を反射できるように、外部反射面２７及び内部反射面２８を形成してもよい。つまり、フレネルレンズ部２３を２箇所に設け、一部の外部反射面２７及び内部反射面２８は、一方のフレネルレンズ部２３の方向からの光を反射できるように形成し、他の外部反射面２７及び内部反射面２８は、他方のフレネルレンズ部２３の方向からの光を反射できるように形成してもよい。また、このような導光レンズ２０を用いる場合には、光源であるストップ側ＬＥＤ４１及びターン側ＬＥＤ４２は、２箇所のフレネルレンズ部２３が設けられている方向の両方向にそれぞれ配設し、ストップ側ＬＥＤ４１用のフレネルレンズ３０も同様に、２箇所のフレネルレンズ部２３のアウターレンズ６寄りの２箇所にそれぞれ配設する。   FIG. 7 is a diagram illustrating a modification of the vehicular lamp according to the embodiment. Moreover, in the vehicle lamp 1 according to the embodiment, the light from the light source is only irradiated from one direction to the light guide lens 20, but may be irradiated from a plurality of directions. For example, the light guide lens 20 of the vehicular lamp 1 according to the embodiment is provided with a Fresnel lens part 23 in one fixed part 22, and the external reflection surface 27 and the internal part can reflect light from the direction of the Fresnel lens part 23. Although the reflection surface 28 is formed, as shown in FIG. 7, the fixing portion 22 and the Fresnel lens portion 23 are provided at both end portions of the light guide lens 20, and from the direction of the Fresnel lens portion 23 located at both end portions. The external reflection surface 27 and the internal reflection surface 28 may be formed so that light can be reflected. That is, the Fresnel lens portion 23 is provided at two locations, and some of the external reflection surfaces 27 and the internal reflection surface 28 are formed so as to be able to reflect light from the direction of one Fresnel lens portion 23, and the other external reflection surfaces 27 and the internal reflection surface 28 may be formed so as to reflect light from the direction of the other Fresnel lens portion 23. When such a light guide lens 20 is used, the stop side LED 41 and the turn side LED 42 which are light sources are arranged in both directions in which the two Fresnel lens portions 23 are provided, Similarly, the Fresnel lens 30 for the LED 41 is disposed at two locations near the outer lens 6 of the two Fresnel lens portions 23, respectively.

これにより、１つの導光レンズ２０で反射できる光源の数を増やすことができるので、１つの導光レンズ２０からより多くの光を照射することができる。この結果、車両用灯具１全体の大きさに対して照射できる光の量が多くなるので、スペース効率の向上を図ることができる。また、１つの導光レンズ２０で光を反射できる光源の数を増やすことができるので、その分、色の種類も増やすことができる。この結果、より多機能な車両用灯具１にすることができる。   Thereby, since the number of light sources that can be reflected by one light guide lens 20 can be increased, more light can be emitted from one light guide lens 20. As a result, the amount of light that can be irradiated with respect to the overall size of the vehicular lamp 1 increases, so that space efficiency can be improved. In addition, since the number of light sources that can reflect light with one light guide lens 20 can be increased, the types of colors can be increased accordingly. As a result, a more versatile vehicle lamp 1 can be obtained.

また、上述した車両用灯具１は、車両の後部に装着するストップランプとターンランプとが一体になった車両用灯具１として説明しているため、外部側光源として赤色光を発光するストップ側ＬＥＤ４１を設け、内部側光源としてアンバー色の光を発光するターン側ＬＥＤ４２を設けているが、外部側光源や内部側光源は、これら以外の色を発光してもよい。これらのＬＥＤ４０は、発光時に他の色で発光するＬＥＤ４０を用いて、車両用灯具１をストップランプやターンランプ以外の用途に用いてもよい。また、外部側光源と内部側光源とは、異なる色で発光しなくてもよく、同色で発光してもよい。外部側光源と内部側光源を同色で発光するようにした場合には、外部側光源と内部側光源とを同時に点灯させることにより、車両用灯具１の点灯時の光度を向上させることができる。この結果、車両用灯具１の小型化を図りつつ照射性能の向上を図ることができる。また、外部側光源と内部側光源のうちの一方を点灯させたり両方を点灯させたりすることにより、光度を変化させることができる。この結果、より多機能な車両用灯具１にすることができる。   Moreover, since the vehicle lamp 1 described above is described as a vehicle lamp 1 in which a stop lamp and a turn lamp mounted on the rear portion of the vehicle are integrated, a stop-side LED 41 that emits red light as an external light source. The turn-side LED 42 that emits amber light is provided as an internal light source. However, the external light source and the internal light source may emit other colors. These LEDs 40 may be used for applications other than stop lamps and turn lamps by using the LEDs 40 that emit light in other colors when light is emitted. Further, the external light source and the internal light source may not emit light with different colors, and may emit light with the same color. When the external light source and the internal light source emit light of the same color, the luminous intensity at the time of lighting of the vehicular lamp 1 can be improved by simultaneously lighting the external light source and the internal light source. As a result, it is possible to improve the irradiation performance while reducing the size of the vehicular lamp 1. In addition, the luminous intensity can be changed by turning on one of the external light source and the internal light source or lighting both. As a result, a more versatile vehicle lamp 1 can be obtained.

また、外部反射面２７及び内部反射面２８は、当該外部反射面２７や内部反射面２８で反射する光の進行方向に対して４５°の角度で傾斜した斜面部２６に形成されているが、斜面部２６は光の進行方向に対して４５°以外の角度で傾斜していてもよい。外部反射面２７は、アルミ蒸着処理が施されているため、４５°以外の角度で光が当たった場合でも、その光を反射することができる。また、内部反射面２８は、導光レンズ２０内を進行する光の進行方向に対して、光を全反射できる臨界角以上の角度で形成されていればよい。また、内部反射面２８は、導光レンズ２０内を進行する光の進行方向に対して、光を全反射できる臨界角以上の角度で形成されていない場合でも、内部反射面２８が形成されている斜面部２６の外側の面にアルミ蒸着等で鏡面反射処理を施すことにより光を反射することができる。このため、内部反射面２８を形成する斜面部２６の角度が、内部反射面２８に当たる光の進行方向に対して臨界角未満の角度で形成されている場合には、当該斜面部２６の外側の面にアルミ蒸着等で鏡面反射処理を施して内部反射面２８を形成してもよい。   In addition, the external reflection surface 27 and the internal reflection surface 28 are formed on the slope portion 26 inclined at an angle of 45 ° with respect to the traveling direction of the light reflected by the external reflection surface 27 and the internal reflection surface 28. The slope portion 26 may be inclined at an angle other than 45 ° with respect to the light traveling direction. Since the external reflection surface 27 is subjected to an aluminum vapor deposition process, the light can be reflected even when the light hits at an angle other than 45 °. Further, the internal reflection surface 28 only needs to be formed at an angle equal to or greater than the critical angle at which light can be totally reflected with respect to the traveling direction of the light traveling in the light guide lens 20. Further, the internal reflection surface 28 is formed even when the internal reflection surface 28 is not formed at an angle greater than the critical angle at which light can be totally reflected with respect to the traveling direction of the light traveling in the light guide lens 20. Light can be reflected by applying a specular reflection process to the outer surface of the inclined surface portion 26 by aluminum vapor deposition or the like. For this reason, when the angle of the slope portion 26 forming the internal reflection surface 28 is formed at an angle less than the critical angle with respect to the traveling direction of the light impinging on the internal reflection surface 28, The internal reflection surface 28 may be formed by subjecting the surface to a specular reflection treatment by aluminum vapor deposition or the like.

また、上述した車両用灯具１では、光源はＬＥＤ４０を用いているが、光源はハロゲン電球や白熱電球など、ＬＥＤ４０以外のものを用いてもよい。導光レンズ２０が内部反射面２８と外部反射面２７とを有しており、これらに光を照射する内部側光源と外部側光源とを有していれば、その形態は上述した以外の形態でも構わない。車両用灯具１をこのように形成することにより、複数の光源からの光を所定の方向に照射しつつ小型化を図ることができる。   Moreover, in the vehicle lamp 1 described above, the LED 40 is used as the light source, but a light source other than the LED 40 such as a halogen light bulb or an incandescent light bulb may be used as the light source. If the light guide lens 20 has an internal reflection surface 28 and an external reflection surface 27 and includes an internal light source and an external light source for irradiating light to the internal reflection surface 28, the configuration is other than that described above. It doesn't matter. By forming the vehicular lamp 1 in this way, it is possible to reduce the size while irradiating light from a plurality of light sources in a predetermined direction.

以上のように、本発明に係る車両用灯具は、小型化を図る場合に有用であり、特に、複数の色を発光する場合に適している。   As described above, the vehicular lamp according to the present invention is useful for downsizing and is particularly suitable for emitting a plurality of colors.

本発明の実施例に係る車両用灯具の要部断面図である。It is principal part sectional drawing of the vehicle lamp which concerns on the Example of this invention. 図１のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 図１に係る車両用灯具の点灯時の状態を示す図である。It is a figure which shows the state at the time of lighting of the vehicle lamp which concerns on FIG. 実施例に係る車両用灯具の変形例を示す図である。It is a figure which shows the modification of the vehicle lamp which concerns on an Example. 実施例に係る車両用灯具の変形例を示す図である。It is a figure which shows the modification of the vehicle lamp which concerns on an Example. 図５に車両用灯具のターン側ＬＥＤが発光した状態を示す図である。FIG. 5 is a diagram showing a state where a turn-side LED of the vehicle lamp emits light. 実施例に係る車両用灯具の変形例を示す図である。It is a figure which shows the modification of the vehicle lamp which concerns on an Example.

符号の説明Explanation of symbols

１ 車両用灯具
５ ハウジング
６ アウターレンズ
１０ 隔壁
１１ 導光レンズ固定孔
１２ フレネルレンズ固定孔
１５ 灯室
１６ 光源室
２０ 導光レンズ
２１ 導光部
２２ 固定部
２３ フレネルレンズ部
２４ 側面
２５ 平面部
２６ 斜面部
２７ 外部反射面
２８ 内部反射面
３０ フレネルレンズ
４０ ＬＥＤ
４１ ストップ側ＬＥＤ
４２ ターン側ＬＥＤ
５１ 固定部反射面
５２ Ｒ部
６０ 拡散部 DESCRIPTION OF SYMBOLS 1 Vehicle lamp 5 Housing 6 Outer lens 10 Bulkhead 11 Light guide lens fixing hole 12 Fresnel lens fixing hole 15 Light chamber 16 Light source chamber 20 Light guide lens 21 Light guide part 22 Fixing part 23 Fresnel lens part 24 Side face 25 Flat part 26 Slope Part 27 External reflective surface 28 Internal reflective surface 30 Fresnel lens 40 LED
41 Stop side LED
42 Turn side LED
51 Fixed part reflection surface 52 R part 60 Diffusion part

Claims (3)

複数の光源と、導光体と、を備える車両用灯具において、
前記導光体は、前記導光体の内部に位置する反射面である内部反射面と、前記導光体の外面に位置する外部反射面と、を有しており、
前記複数の光源は、前記内部反射面に光を照射する内部側光源と、前記外部反射面に光を照射する外部側光源と、を有していることを特徴とする車両用灯具。 In a vehicle lamp comprising a plurality of light sources and a light guide,
The light guide has an internal reflection surface which is a reflection surface located inside the light guide, and an external reflection surface located on the outer surface of the light guide,
The plurality of light sources includes an internal light source that irradiates light to the internal reflection surface, and an external light source that irradiates light to the external reflection surface. 前記外部反射面は、前記導光体を前記内部反射面の反射方向に見た場合に、前記内部反射面とずれた位置に配設されていることを特徴とする請求項１に記載の車両用灯具。   The vehicle according to claim 1, wherein the external reflection surface is disposed at a position shifted from the internal reflection surface when the light guide is viewed in a reflection direction of the internal reflection surface. Lamps. 前記複数の光源は、複数の異なる色の光を照射できるように設けられていることを特徴とする請求項１または２に記載の車両用灯具。   The vehicular lamp according to claim 1, wherein the plurality of light sources are provided so as to be able to irradiate a plurality of different colors of light.
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