JP4493610B2 - Vehicle lamp - Google Patents

Vehicle lamp Download PDF

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Publication number
JP4493610B2
JP4493610B2 JP2006064116A JP2006064116A JP4493610B2 JP 4493610 B2 JP4493610 B2 JP 4493610B2 JP 2006064116 A JP2006064116 A JP 2006064116A JP 2006064116 A JP2006064116 A JP 2006064116A JP 4493610 B2 JP4493610 B2 JP 4493610B2
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light emitting
light
emitting element
semiconductor light
semiconductor
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JP2007242451A (en
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浩哉 小泉
和典 夏目
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Koito Manufacturing Co Ltd
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Koito Manufacturing 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
    • F21S43/40—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
    • 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
    • F21S43/239—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
    • F21S43/245—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
    • F21S43/249—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
    • 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
    • F21S43/33—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors characterised by their material, surface treatment or coatings

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

Description

本発明は車輌用灯具に関する。詳しくは、出射方向が互いに向き合う複数の半導体発光素子を用いて車輌用灯具の照射方向における薄型化を確保した上で輝度の向上を図る技術分野に関する。   The present invention relates to a vehicular lamp. More specifically, the present invention relates to a technical field in which a plurality of semiconductor light emitting elements whose emission directions face each other are used to improve the luminance while ensuring a reduction in thickness in the irradiation direction of a vehicular lamp.

灯室内に光源が配置された車輌用灯具、例えば、光源として半導体発光素子が用いられた車輌用灯具がある。   There is a vehicular lamp in which a light source is disposed in a lamp chamber, for example, a vehicular lamp in which a semiconductor light emitting element is used as a light source.

このような車輌用灯具として、半導体発光素子が下方に配置され、半導体発光素子から出射された光をフレネルレンズ等の所定のレンズによって平行光とし、傾斜状態で配置された反射部材（リフレクター）の一部（反射面）で平行光を直交する方向へ反射させて、例えば、前方へ光を照射するようにしたものがある（例えば、特許文献１参照）。   As such a vehicular lamp, a semiconductor light emitting element is disposed below, and light emitted from the semiconductor light emitting element is converted into parallel light by a predetermined lens such as a Fresnel lens, and a reflecting member (reflector) disposed in an inclined state is used. There is one in which parallel light is reflected by a part (reflecting surface) in a direction orthogonal to each other and, for example, light is irradiated forward (see, for example, Patent Document 1).

特許文献１に記載された車輌用灯具にあっては、前斜め下方を向く複数の反射面が上下方向において離隔して形成され、各反射面間はそれぞれ前方を向く非反射面として形成されている。   In the vehicular lamp described in Patent Document 1, a plurality of reflective surfaces facing obliquely downward in the front direction are formed apart from each other in the vertical direction, and each reflective surface is formed as a non-reflective surface facing forward. Yes.

上記のように、半導体発光素子を下方に配置し、半導体発光素子から出射された光を反射部材の反射面で反射させて照射することにより、照射方向における車輌用灯具の厚みを小さくすることが可能となり、薄型化を図ることができる。   As described above, the thickness of the vehicular lamp in the irradiation direction can be reduced by arranging the semiconductor light emitting element below and irradiating the light emitted from the semiconductor light emitting element with the reflection surface of the reflecting member. It becomes possible, and thickness reduction can be achieved.

特開２００３−５９３１３号公報JP 2003-59313 A

ところが、図５に示すように、上記した従来の車輌用灯具ａにあっては、半導体発光素子ｂ、ｂ、・・・から出射された光がそれぞれフレネルレンズｃ、ｃ、・・・によって平行光とされ、反射部材ｄの各反射面ｅ、ｅ、・・・で反射された光だけが前方へ照射され、非反射面ｆ、ｆ、・・・を介しては光が照射されない。従って、光が照射される範囲が狭く、車輌用灯具ａの輝度が低くなるおそれがある。   However, as shown in FIG. 5, in the above-described conventional vehicle lamp a, light emitted from the semiconductor light emitting elements b, b,... Is parallel by the Fresnel lenses c, c,. Only light reflected by the reflecting surfaces e, e,... Of the reflecting member d is irradiated forward, and no light is irradiated through the non-reflecting surfaces f, f,. Therefore, there is a possibility that the light irradiation range is narrow and the brightness of the vehicular lamp a is lowered.

車輌用灯具ａの輝度を高めるためには、例えば、反射面ｅ、ｅ、・・・と非反射面ｆ、ｆ、・・・のピッチを小さくすることが考慮されるが、この場合には、反射部材ｄを形成するための成形用金型の加工精度を高くする必要等が生じ、製造コストの高騰を来たしてしまう。   In order to increase the brightness of the vehicular lamp a, for example, it is considered to reduce the pitch between the reflective surfaces e, e,... And the non-reflective surfaces f, f,. Therefore, it becomes necessary to increase the processing accuracy of the molding die for forming the reflecting member d, and the manufacturing cost increases.

そこで、本発明車輌用灯具は、車輌用灯具の照射方向における薄型化を確保した上で輝度の向上を図ることを課題とする。   Therefore, an object of the vehicle lamp of the present invention is to improve the luminance while securing a reduction in thickness in the irradiation direction of the vehicle lamp.

本発明車輌用灯具は、上記した課題を解決するために、灯室内に配置され光の照射方向に略直交し互いに略向き合う方向に光を出射する第１の半導体発光素子及び第２の半導体発光素子と、第１の半導体発光素子と第２の半導体発光素子の間に配置された光透過部材とを設け、該光透過部材に、第１の半導体発光素子から出射された光を上記照射方向へ反射させる複数の第１の反射面と、第２の半導体発光素子から出射された光を入射させる光入射面と、第２の半導体発光素子から出射され光入射面に入射された光を上記照射方向へ内面反射させる複数の第２の反射面と、第２の半導体発光素子から出射され第２の反射面で反射された光を上記照射方向へ出射させる複数の光出射面とを形成し、上記第１の反射面と上記光出射面を異なる方向へ向けた状態で第１の半導体発光素子と第２の半導体発光素子を結ぶ方向において交互に連続して形成したものである。   In order to solve the above-described problems, the vehicular lamp according to the present invention includes a first semiconductor light-emitting element and a second semiconductor light-emitting element that are arranged in the lamp chamber and emit light in directions substantially orthogonal to the light irradiation direction and facing each other. An element and a light transmitting member disposed between the first semiconductor light emitting element and the second semiconductor light emitting element are provided, and light emitted from the first semiconductor light emitting element is applied to the light transmitting member in the irradiation direction. A plurality of first reflecting surfaces to be reflected to the light, a light incident surface to which the light emitted from the second semiconductor light emitting element is incident, and the light emitted from the second semiconductor light emitting element and incident on the light incident surface Forming a plurality of second reflecting surfaces that are internally reflected in the irradiation direction, and a plurality of light emitting surfaces that emit light emitted from the second semiconductor light emitting element and reflected by the second reflecting surface in the irradiation direction. , Different directions for the first reflecting surface and the light emitting surface In a state toward the first semiconductor light emitting element direction connecting the second semiconductor light emitting elements are those formed by alternately and continuously.

従って、本発明車輌用灯具にあっては、第１の半導体発光素子から出射され第１の反射面で反射された光が照射されると共に第２の半導体発光素子から出射され第２の反射面で内面反射された光が第１の反射面で反射された光と同じ方向へ照射される。   Therefore, in the vehicular lamp according to the present invention, the light emitted from the first semiconductor light emitting element and reflected by the first reflecting surface is irradiated and emitted from the second semiconductor light emitting element to the second reflecting surface. The light reflected on the inner surface is irradiated in the same direction as the light reflected on the first reflecting surface.

本発明車輌用灯具は、灯室内に配置され光の照射方向に略直交し互いに略向き合う方向に光を出射する第１の半導体発光素子及び第２の半導体発光素子と、第１の半導体発光素子と第２の半導体発光素子の間に配置された光透過部材とを備え、該光透過部材に、第１の半導体発光素子から出射された光を上記照射方向へ反射させる複数の第１の反射面と、第２の半導体発光素子から出射された光を入射させる光入射面と、第２の半導体発光素子から出射され光入射面に入射された光を上記照射方向へ内面反射させる複数の第２の反射面と、第２の半導体発光素子から出射され第２の反射面で反射された光を上記照射方向へ出射させる複数の光出射面とを形成し、上記第１の反射面と上記光出射面を異なる方向へ向けた状態で第１の半導体発光素子と第２の半導体発光素子を結ぶ方向において交互に連続して形成したことを特徴とする。   The vehicular lamp according to the present invention includes a first semiconductor light-emitting element and a second semiconductor light-emitting element that are arranged in a lamp chamber and emit light in a direction substantially orthogonal to the light irradiation direction and facing each other, and the first semiconductor light-emitting element And a light transmitting member disposed between the second semiconductor light emitting element, and a plurality of first reflections that reflect light emitted from the first semiconductor light emitting element in the irradiation direction to the light transmitting member. A light incident surface on which light emitted from the second semiconductor light emitting element is incident, and a plurality of first light beams that are internally reflected in the irradiation direction from the light emitted from the second semiconductor light emitting element and incident on the light incident surface. And a plurality of light emitting surfaces for emitting the light emitted from the second semiconductor light emitting element and reflected by the second reflecting surface in the irradiation direction, the first reflecting surface and the First semiconductor light emission with the light exit surface facing different directions Characterized by being formed alternately and continuously in the direction connecting the child and the second semiconductor light emitting element.

従って、光が反射されて照射されるため光の照射方向における車輌用灯具の薄型化を確保することができると共に光が照射される範囲が広いため輝度の向上を図ることができる。   Accordingly, since the light is reflected and irradiated, the vehicle lamp can be made thin in the light irradiation direction, and the luminance can be improved because the light irradiation range is wide.

請求項２に記載した発明にあっては、第１の半導体発光素子と光透過部材の間に配置され第１の半導体発光素子から出射された光を平行光にする第１のレンズと、第２の半導体発光素子と光透過部材の間に配置され第２の半導体発光素子から出射された光を平行光にする第２のレンズのうち、少なくとも一方のレンズを設けたので、半導体発光素子から出射された光を照射方向へ有効かつ確実に照射することができる。   In the invention described in claim 2, a first lens disposed between the first semiconductor light emitting element and the light transmitting member to convert the light emitted from the first semiconductor light emitting element into parallel light, Since at least one lens is provided among the second lenses arranged between the semiconductor light emitting element 2 and the light transmissive member and making the light emitted from the second semiconductor light emitting element parallel light, the semiconductor light emitting element The emitted light can be effectively and reliably irradiated in the irradiation direction.

請求項３に記載した発明にあっては、上記光透過部材の第１の反射面と第２の反射面のうち、少なくとも一方の反射面に反射処理を施したので、半導体発光素子から出射された光の反射率が高く、光の利用効率の向上を図ることができる。   In the invention described in claim 3, since at least one of the first reflecting surface and the second reflecting surface of the light transmitting member is subjected to the reflection treatment, the light is emitted from the semiconductor light emitting element. Further, the reflectance of light is high, and the utilization efficiency of light can be improved.

請求項４に記載した発明にあっては、第１の半導体発光素子及び第２の半導体発光素子を、上記照射方向に直交し第１の半導体発光素子と第２の半導体発光素子を結ぶ方向に直交する方向に並ぶように複数配置したので、光の照射面積が大きく、車輌用灯具の視認性の向上を図ることができる。   In the invention described in claim 4, the first semiconductor light emitting element and the second semiconductor light emitting element are arranged in a direction perpendicular to the irradiation direction and connecting the first semiconductor light emitting element and the second semiconductor light emitting element. Since a plurality of the lamps are arranged in the orthogonal direction, the light irradiation area is large, and the visibility of the vehicular lamp can be improved.

請求項５に記載した発明にあっては、光透過部材を挟んで上記照射方向と反対側の位置にリフレクターを配置したので、リフレクターに光透過部材の形状が写り込み、車輌用灯具の奥行き感を奏することができる。   In the fifth aspect of the present invention, since the reflector is disposed at a position opposite to the irradiation direction with the light transmissive member interposed therebetween, the shape of the light transmissive member is reflected on the reflector, and the vehicle lamp has a sense of depth. Can be played.

以下に、本発明車輌用灯具を実施するための最良の形態について添付図面を参照して説明する。   The best mode for carrying out the vehicular lamp of the present invention will be described below with reference to the accompanying drawings.

以下に示した最良の形態は、本発明車輌用灯具を車輌用のテールランプ又はストップランプに適用したものである。尚、本発明の適用範囲は車輌用のテールランプ又はストップランプに限られることはなく、灯室内に光源として半導体発光素子が配置され該半導体発光素子から出射された光が反射されて照射されるタイプの各種の車輌用灯具に広く適用することができる。   In the best mode shown below, the vehicular lamp of the present invention is applied to a tail lamp or stop lamp for a vehicle. The scope of application of the present invention is not limited to a tail lamp or stop lamp for a vehicle. A semiconductor light emitting element is disposed as a light source in a lamp chamber, and light emitted from the semiconductor light emitting element is reflected and irradiated. It can be widely applied to various vehicle lamps.

車輌用灯具１は、図１に示すように、例えば、前方に開口されたランプボデイ２と該ランプボデイ２の前面開口を閉塞するレンズ３とを備え、ランプボデイ２とレンズ３によって画成された内部空間が灯室４として形成されている。   As shown in FIG. 1, the vehicular lamp 1 includes, for example, a lamp body 2 that is opened forward and a lens 3 that closes the front opening of the lamp body 2, and is defined by the lamp body 2 and the lens 3. The interior space is formed as a lamp chamber 4.

灯室４内には保持部材５が配置されている。保持部材５は、例えば、前後に離隔して配置されたそれぞれ枠状の前側部５ａと後側部５ｂとを有している。   A holding member 5 is disposed in the lamp chamber 4. The holding member 5 has, for example, a frame-shaped front side portion 5a and a rear side portion 5b, which are spaced apart from each other in the front-rear direction.

保持部材５の後側部５ｂには、その内周部にリフレクター６が取り付けられている。リフレクター６の前面は、例えば、後方へ凸の放物面状に形成されている。   A reflector 6 is attached to the inner peripheral part of the rear side part 5 b of the holding member 5. The front surface of the reflector 6 is formed, for example, in a parabolic shape that protrudes rearward.

保持部材５の上端部及び下端部には、それぞれ回路基板７、７が取り付けられている。下側の回路基板７の上面には左右に離隔して第１の半導体発光素子８、８、・・・が実装され、上側の回路基板７の下面には左右に離隔して第２の半導体発光素子９、９、・・・が実装されている。第１の半導体発光素子８、８、・・・からはそれぞれ上方へ向けて一定の拡散角度を以て光が出射され、第２の半導体発光素子９、９、・・・からはそれぞれ下方へ向けて一定の拡散角度を以て光が出射される。   Circuit boards 7 and 7 are attached to the upper end portion and the lower end portion of the holding member 5, respectively. The first semiconductor light emitting elements 8, 8,... Are mounted on the upper surface of the lower circuit board 7 so as to be separated from each other on the left and right sides, and the second semiconductor is separated on the lower surface of the upper circuit board 7 from the left and right. Light emitting elements 9, 9,... Are mounted. Light is emitted from the first semiconductor light emitting elements 8, 8,... Upward with a certain diffusion angle, and downward from the second semiconductor light emitting elements 9, 9,. Light is emitted with a certain diffusion angle.

保持部材５の内側の端部には、それぞれ下端部と上端部に第１のレンズ１０と第２のレンズ１１が取り付けられている。第１のレンズ１０と第２のレンズ１１はそれぞれ第１の半導体発光素子８、８、・・・と第２の半導体発光素子９、９、・・・から出射された光を平行光に変換するレンズであり、例えば、第１のレンズ１０と第２のレンズ１１としてそれぞれフレネルレンズが用いられている。   A first lens 10 and a second lens 11 are attached to the lower end and the upper end of the inner end of the holding member 5, respectively. The first lens 10 and the second lens 11 convert the light emitted from the first semiconductor light emitting elements 8, 8,... And the second semiconductor light emitting elements 9, 9,. For example, Fresnel lenses are used as the first lens 10 and the second lens 11, respectively.

灯室４における第１のレンズ１０と第２のレンズ１１の間には、光透過部材１２が配置されている。光透過部材１２は透明な樹脂又はガラス等の材料によって各部が一体に形成されて成り、縦断面形状で見て、全体として上斜め前方に延びるように緩やかに傾斜されている。   A light transmission member 12 is disposed between the first lens 10 and the second lens 11 in the lamp chamber 4. The light transmitting member 12 is formed by integrally forming each part with a material such as transparent resin or glass, and is gently inclined so as to extend upward and obliquely forward as a whole when viewed in a longitudinal sectional shape.

光透過部材１２の前面１２ａには、略前方を向く光出射面１３、１３、・・・と前斜め下方を向く第１の反射面１４、１４、・・・とが上下方向において交互に連続して形成されている。第１の反射面１４、１４、・・・には、それぞれ、例えば、アルミ蒸着や塗装等による反射処理１５、１５、・・・が施されている。   On the front surface 12a of the light transmitting member 12, light emitting surfaces 13, 13,... Facing substantially forward and first reflecting surfaces 14, 14,. Is formed. The first reflecting surfaces 14, 14,... Are subjected to reflection treatments 15, 15,.

光透過部材１２にあっては、左右方向において、光出射面１３、１３、・・・と第１の反射面１４、１４、・・・とがそれぞれ上下にずれた位置に形成されている（図２参照）。尚、図２に示した光出射面１３、１３、・・・と第１の反射面１４、１４、・・・の各位置は一例であり、両者の位置は図２に示す位置に限定されることはなく、例えば、光出射面１３、１３、・・・と第１の反射面１４、１４、・・・が規則的に配列されるように位置されていてもよい。   In the light transmitting member 12, the light emitting surfaces 13, 13,... And the first reflecting surfaces 14, 14,. (See FIG. 2). .. And the first reflecting surfaces 14, 14,... Shown in FIG. 2 are examples, and the positions of both are limited to the positions shown in FIG. For example, the light emitting surfaces 13, 13,... And the first reflecting surfaces 14, 14,.

光透過部材１２の後面１２ｂには、後方へ突出された反射用突部１６、１６、・・・が上下に離隔して設けられている（図１参照）。反射用突部１６、１６、・・・は楔状に形成され、それぞれ光出射面１３、１３、・・・の真後ろに位置されている。反射用突部１６、１６、・・・は、上方を向く光入射面１６ａ、１６ａ、・・・と下斜め後方を向く第２の反射面１６ｂ、１６ｂ、・・・とを有し、該第２の反射面１６ｂ、１６ｂ、・・・は水平方向に対してそれぞれ、例えば、４５°の角度に傾斜されている。   The rear surface 12b of the light transmission member 12 is provided with reflection protrusions 16, 16,... Projecting rearward and spaced apart from each other (see FIG. 1). The reflection protrusions 16, 16,... Are formed in a wedge shape, and are positioned just behind the light emitting surfaces 13, 13,. The reflection protrusions 16, 16,... Have light incident surfaces 16a, 16a,... Facing upward and second reflection surfaces 16b, 16b,. The second reflecting surfaces 16b, 16b,... Are inclined, for example, at an angle of 45 ° with respect to the horizontal direction.

以上のように構成された車輌用灯具１において、図１に示すように、第１の半導体発光素子８、８、・・・から光が出射されると、出射された光は第１のレンズ１０によって平行光とされ、光透過部材１２の第１の反射面１４、１４、・・・で略９０°折り曲げられるように反射されてレンズ３を介して前方へ照射される。また、同時に第２の半導体発光素子９、９、・・・からも光が出射され、出射された光は第２のレンズ１１によって平行光とされ、光透過部材１２の光入射面１６ａ、１６ａ、・・・から反射用突部１６、１６、・・・内に入射される。反射用突部１６、１６、・・・内に入射された光は、第２の反射面１６ｂ、１６ｂ、・・・で略９０°折り曲げられるように内面反射されて光出射面１３、１３、・・・から出射されレンズ３を介して前方へ同時に照射される。   In the vehicular lamp 1 configured as described above, as shown in FIG. 1, when light is emitted from the first semiconductor light emitting elements 8, 8,..., The emitted light is converted into the first lens. 10 is converted into parallel light, reflected by the first reflecting surfaces 14, 14,... Of the light transmitting member 12 so as to be bent by approximately 90 ° and irradiated forward through the lens 3. At the same time, light is emitted from the second semiconductor light emitting elements 9, 9,..., And the emitted light is converted into parallel light by the second lens 11, and the light incident surfaces 16a, 16a of the light transmitting member 12 are emitted. ,... Are incident into the reflection projections 16, 16,. The light that has entered the reflecting protrusions 16, 16,... Is internally reflected so as to be bent at approximately 90 ° by the second reflecting surfaces 16b, 16b,. Are emitted simultaneously through the lens 3 and forwardly irradiated.

従って、車輌用灯具１においては、第１の反射面１４、１４、・・・で反射された光と第２の反射面１６ｂ、１６ｂ、・・・で内面反射された光がレンズ３を介して前方へ照射される（図３参照）。図３は、前方から見たときの光の出射状態を示すものであり、第１の反射面１４、１４、・・・で反射された光と第２の反射面１６ｂ、１６ｂ、・・・で内面反射された光がともに照射されるため、光が照射される範囲が広くされている。   Therefore, in the vehicular lamp 1, the light reflected by the first reflecting surfaces 14, 14,... And the light reflected by the second reflecting surfaces 16 b, 16 b,. Is irradiated forward (see FIG. 3). FIG. 3 shows the light emission state when viewed from the front, and the light reflected by the first reflecting surfaces 14, 14,... And the second reflecting surfaces 16b, 16b,. Since the light reflected from the inner surface is irradiated together, the light irradiation range is widened.

以上に記載した通り、車輌用灯具１にあっては、第１の半導体発光素子８、８、・・・から出射され第１の反射面１４、１４、・・・で反射された光と第２の半導体発光素子９、９、・・・から出射され第２の反射面１６ｂ、１６ｂ、・・・で内面反射された光がともに前方へ向けて照射される。   As described above, in the vehicular lamp 1, the light emitted from the first semiconductor light emitting elements 8, 8,... And reflected by the first reflecting surfaces 14, 14,. Are emitted from the two semiconductor light emitting elements 9, 9,..., And are internally reflected by the second reflecting surfaces 16b, 16b,.

従って、上下方向から出射されて光が反射されて照射されるため前後方向（照射方向）における車輌用灯具１の薄型化を確保することができると共に光が照射される範囲が広いため輝度の向上を図ることができる。   Therefore, since the light emitted from the vertical direction is reflected and irradiated, the vehicle lamp 1 can be thinned in the front-rear direction (irradiation direction) and the luminance is improved because the light irradiation range is wide. Can be achieved.

また、第２の半導体発光素子９、９、・・・が光透過部材１２の周囲の小さなスペースに配置されるため、スペースの有効活用を図ることができる。   Further, since the second semiconductor light emitting elements 9, 9,... Are arranged in a small space around the light transmission member 12, the space can be effectively used.

さらに、光透過部材１２の前面１２ａ側で反射された光に加え、光透過部材１２の後面１２ｂ側で反射された光が前方へ向けて照射されるため、車輌用灯具１の奥行き感を奏することができる。   Furthermore, in addition to the light reflected on the front surface 12a side of the light transmissive member 12, the light reflected on the rear surface 12b side of the light transmissive member 12 is irradiated forward, thereby providing a sense of depth of the vehicular lamp 1. be able to.

さらにまた、車輌用灯具１にあっては、第１の半導体発光素子８、８、・・・から出射された光を平行光にする第１のレンズ１０と第２の半導体発光素子９、９、・・・から出射された光を平行光にする第２のレンズ１１とを設けているため、第１の半導体発光素子８、８、・・・から出射された光及び第２の半導体発光素子９、９、・・・から出射された光を前方へ有効かつ確実に照射することができる。尚、第１のレンズ１０と第２のレンズ１１は、何れか一方が設けられていてもよい。   Furthermore, in the vehicular lamp 1, the first lens 10 and the second semiconductor light emitting elements 9, 9 that make the light emitted from the first semiconductor light emitting elements 8, 8,. ,... Is provided with a second lens 11 that collimates the light emitted from the first semiconductor light-emitting elements 8, 8,. The light emitted from the elements 9, 9,... Can be effectively and reliably irradiated forward. Note that one of the first lens 10 and the second lens 11 may be provided.

また、第１のレンズ１０と第２のレンズ１１を設けることにより、照射方向への漏れ光を低減することができる。   Further, by providing the first lens 10 and the second lens 11, leakage light in the irradiation direction can be reduced.

さらにまた、車輌用灯具１にあっては、光透過部材１２の第１の反射面１４、１４、・・・にそれぞれ反射処理１５、１５、・・・を施しているため、第１の半導体発光素子８、８、・・・から出射された光の反射率が高く、光の利用効率の向上を図ることができる。   Further, in the vehicular lamp 1, the first reflecting surfaces 14, 14,... Of the light transmitting member 12 are subjected to the reflection treatments 15, 15,. The reflectance of the light emitted from the light emitting elements 8, 8,... Is high, and the light utilization efficiency can be improved.

尚、上記には、第１の反射面１４、１４、・・・にそれぞれ反射処理１５、１５、・・・を施した例を示したが、第２の反射面１６ｂ、１６ｂ、・・・にも反射処理を施すことも可能である。   In addition, although the example which gave reflection processing 15, 15, ... to the 1st reflective surfaces 14, 14, ... above was shown, the 2nd reflective surfaces 16b, 16b, ... are shown, respectively. Also, it is possible to apply a reflection treatment.

また、車輌用灯具１にあっては、第１の半導体発光素子８、８、・・・及び第２の半導体発光素子９、９、・・・を左右に離隔して複数配置しているため、光の照射面積が大きく、車輌用灯具１の視認性の向上を図ることができる。   In the vehicular lamp 1, a plurality of first semiconductor light emitting elements 8, 8,... And second semiconductor light emitting elements 9, 9,. The light irradiation area is large, and the visibility of the vehicular lamp 1 can be improved.

加えて、光透過部材１２の背面にはリフレクター６が配置されているため、該リフレクター６に反射突部１６、１６、・・・が写り込み、車輌用灯具１の奥行き感を奏することができる。   In addition, since the reflector 6 is disposed on the back surface of the light transmitting member 12, the reflection protrusions 16, 16,... .

以下に、車輌用灯具の変形例を示す（図４参照）。尚、以下に示す変形例に係る車輌用灯具１Ａは、上記した車輌用灯具１と比較して、光透過部材の形状が異なることのみが相違するため、車輌用灯具１と比較して異なる部分についてのみ詳細に説明をし、その他の部分については車輌用灯具１における同様の部分に付した符号と同じ符号を付して説明は省略する。   Below, the modification of a vehicle lamp is shown (refer FIG. 4). The vehicle lamp 1A according to the modification shown below is different from the vehicle lamp 1 only in that the shape of the light transmitting member is different, and thus different from the vehicle lamp 1. Only the above will be described in detail, and the other parts will be denoted by the same reference numerals as those assigned to the same parts in the vehicular lamp 1 and description thereof will be omitted.

灯室４における第１のレンズ１０と第２のレンズ１１の間には、光透過部材１２Ａが配置されている。光透過部材１２Ａは透明な樹脂又はガラス等の材料によって各部が一体に形成されて成り、縦断面形状で見て縦長の形状を為し、前面１２ｃは下方へ行くに従って後方へ変位するような略階段状に形成されている。   A light transmitting member 12 </ b> A is disposed between the first lens 10 and the second lens 11 in the lamp chamber 4. The light transmitting member 12A is formed by integrally forming each part with a material such as transparent resin or glass, has a vertically long shape when viewed in a vertical cross-sectional shape, and the front surface 12c is displaced backward as it goes downward. It is formed in steps.

光透過部材１２Ａの前面１２ｃには、略前方を向く光出射面１３Ａ、１３Ａ、・・・と前斜め下方を向く第１の反射面１４Ａ、１４Ａ、・・・とが上下方向において交互に連続して形成されている。第１の反射面１４Ａ、１４Ａ、・・・には、それぞれ、例えば、アルミ蒸着や塗装等による反射処理１５Ａ、１５Ａ、・・・が施されている。   On the front surface 12c of the light transmitting member 12A, light emitting surfaces 13A, 13A,... Facing substantially forward and first reflecting surfaces 14A, 14A,. Is formed. The first reflective surfaces 14A, 14A,... Are subjected to reflection treatments 15A, 15A,.

尚、光透過部材１２Ａにあっては光透過部材１２と同様に、左右方向において、光出射面１３Ａ、１３Ａ、・・・と第１の反射面１４Ａ、１４Ａ、・・・とがそれぞれ上下にずれた位置に形成されている。   In the light transmitting member 12A, similarly to the light transmitting member 12, the light emitting surfaces 13A, 13A,... And the first reflecting surfaces 14A, 14A,. It is formed at a shifted position.

光透過部材１２Ａの上面は、第２の半導体発光素子９、９、・・・に対向して位置された光入射面１８として形成されている。   The upper surface of the light transmitting member 12A is formed as a light incident surface 18 positioned to face the second semiconductor light emitting elements 9, 9,.

光透過部材１２Ａの後面１２ｄには、後方へ開口された凹状部１７、１７、・・・が上下に離隔して形成されている。凹状部１７、１７、・・・は、それぞれ光出射面１３Ａ、１３Ａ、・・・の真後ろに位置されている。   On the rear surface 12d of the light transmitting member 12A, concave portions 17, 17,... Opened rearward are formed so as to be spaced apart in the vertical direction. The concave portions 17, 17,... Are located directly behind the light emitting surfaces 13A, 13A,.

光透過部材１２Ａの凹状部１７、１７、・・・の前端部に対応した位置には、それぞれ下斜め後方を向く第２の反射面１９、１９、・・・が形成され、該第２の反射面１９、１９、・・・は水平方向に対してそれぞれ、例えば、４５°の角度に傾斜されている。   .. Are formed at the positions corresponding to the front end portions of the concave portions 17, 17,... Of the light transmitting member 12A, respectively, and the second reflecting surfaces 19, 19,. The reflecting surfaces 19, 19,... Are inclined, for example, at an angle of 45 ° with respect to the horizontal direction.

以上のように構成された車輌用灯具１Ａにおいて、第１の半導体発光素子８、８、・・・から光が出射されると、出射された光は第１のレンズ１０によって平行光とされ、光透過部材１２Ａの第１の反射面１４Ａ、１４Ａ、・・・で略９０°折り曲げられるように反射されてレンズ３を介して前方へ照射される。また、同時に第２の半導体発光素子９、９、・・・からも光が出射され、出射された光は第２のレンズ１１によって平行光とされ、光透過部材１２Ａの光入射面１８から光透過部材１２Ａの内部に入射される。光透過部材１２Ａの内部に入射された光は、第２の反射面１９、１９、・・・で略９０°折り曲げられるように内面反射されて光出射面１３Ａ、１３Ａ、・・・から出射されレンズ３を介して前方へ照射される。   In the vehicle lamp 1A configured as described above, when light is emitted from the first semiconductor light emitting elements 8, 8,..., The emitted light is converted into parallel light by the first lens 10. The light is reflected by the first reflecting surfaces 14A, 14A,... Of the light transmitting member 12A so as to be bent by about 90 ° and irradiated forward through the lens 3. At the same time, light is emitted from the second semiconductor light emitting elements 9, 9,..., And the emitted light is converted into parallel light by the second lens 11, and light is emitted from the light incident surface 18 of the light transmitting member 12A. The light enters the inside of the transmissive member 12A. The light incident on the inside of the light transmitting member 12A is internally reflected so as to be bent at approximately 90 ° by the second reflecting surfaces 19, 19,... Irradiated forward through the lens 3.

従って、車輌用灯具１Ａにおいては、第１の反射面１４Ａ、１４Ａ、・・・で反射された光と第２の反射面１９、１９、・・・で内面反射された光がレンズ３を介して前方へ同時に照射される。   Therefore, in the vehicular lamp 1A, the light reflected by the first reflecting surfaces 14A, 14A,... And the light reflected internally by the second reflecting surfaces 19, 19,. Are simultaneously irradiated forward.

以上に記載した通り、車輌用灯具１Ａにあっても車輌用灯具１と同様に、第１の半導体発光素子８、８、・・・から出射され第１の反射面１４Ａ、１４Ａ、・・・で反射された光と第２の半導体発光素子９、９、・・・から出射され第２の反射面１９、１９、・・・で内面反射された光がともに前方へ向けて照射される。   As described above, even in the vehicular lamp 1A, similarly to the vehicular lamp 1, the first reflecting surfaces 14A, 14A,... Emitted from the first semiconductor light emitting elements 8, 8,. .. And the light emitted from the second semiconductor light emitting elements 9, 9,... And internally reflected by the second reflecting surfaces 19, 19,.

従って、上下方向から出射されて光が反射されて照射されるため前後方向（照射方向）における車輌用灯具１Ａの薄型化を確保することができると共に光が照射される範囲が広いため輝度の向上を図ることができる。   Therefore, since the light emitted from the vertical direction is reflected and irradiated, the vehicle lamp 1A in the front-rear direction (irradiation direction) can be reduced in thickness, and the luminance is improved because the light irradiation range is wide. Can be achieved.

上記した最良の形態において示した各部の形状及び構造は、何れも本発明を実施するに際して行う具体化のほんの一例を示したものに過ぎず、これらによって本発明の技術的範囲が限定的に解釈されることがあってはならないものである。   The shapes and structures of the respective parts shown in the above-described best mode are merely examples of implementations in carrying out the present invention, and the technical scope of the present invention is limitedly interpreted by these. It should not be done.

図２乃至図４と共に本発明の最良の形態を示すものであり、本図は車輌用灯具の縦断面図である。2 to 4 show the best mode of the present invention, and this figure is a longitudinal sectional view of a vehicular lamp. レンズを取り外して示す車輌用灯具の正面図である。It is a front view of the vehicular lamp which removes and shows a lens. 前方から見たときの光の出射状態を示す概念図である。It is a conceptual diagram which shows the emission state of the light when it sees from the front. 変形例に係る車輌用灯具の縦断面図である。It is a longitudinal cross-sectional view of the vehicle lamp which concerns on a modification. 従来の車輌用灯具を示すものであり、左側は縦断面図であり、右側は前方から見たときの光の出射状態を示す概念図である。The conventional vehicle lamp is shown, the left side is a longitudinal cross-sectional view, and the right side is a conceptual diagram showing a light emission state when viewed from the front.

符号の説明Explanation of symbols

１…車輌用灯具、２…ランプボデイ、４…灯室、６…リフレクター、８…第１の半導体発光素子、９…第２の半導体発光素子、１０…第１のレンズ、１１…第２のレンズ、１２…光透過部材、１３…光出射面、１４…第１の反射面、１５…反射処理、１６ａ…光入射面、１６ｂ…第２の反射面、１Ａ…車輌用灯具、１２Ａ…光透過部材、１３Ａ…光出射面、１４Ａ…第１の反射面、１５Ａ…反射処理、１８…光入射面、１９…第２の反射面   DESCRIPTION OF SYMBOLS 1 ... Vehicle lamp, 2 ... Lamp body, 4 ... Light chamber, 6 ... Reflector, 8 ... 1st semiconductor light-emitting device, 9 ... 2nd semiconductor light-emitting device, 10 ... 1st lens, 11 ... 2nd Lens 12, light transmission member 13, light exit surface 14, first reflection surface 15, reflection treatment, 16 a, light incident surface 16 b, second reflection surface, 1 A, vehicle lamp, 12 A, light Transmitting member, 13A ... light emitting surface, 14A ... first reflecting surface, 15A ... reflection treatment, 18 ... light incident surface, 19 ... second reflecting surface

Claims (5)

灯室内に配置され光の照射方向に略直交し互いに略向き合う方向に光を出射する第１の半導体発光素子及び第２の半導体発光素子と、
第１の半導体発光素子と第２の半導体発光素子の間に配置された光透過部材とを備え、
該光透過部材に、第１の半導体発光素子から出射された光を上記照射方向へ反射させる複数の第１の反射面と、第２の半導体発光素子から出射された光を入射させる光入射面と、第２の半導体発光素子から出射され光入射面に入射された光を上記照射方向へ内面反射させる複数の第２の反射面と、第２の半導体発光素子から出射され第２の反射面で反射された光を上記照射方向へ出射させる複数の光出射面とを形成し、
上記第１の反射面と上記光出射面を異なる方向へ向けた状態で第１の半導体発光素子と第２の半導体発光素子を結ぶ方向において交互に連続して形成した
ことを特徴とする車輌用灯具。 A first semiconductor light emitting element and a second semiconductor light emitting element that are arranged in the lamp chamber and emit light in a direction substantially orthogonal to the light irradiation direction and facing each other;
A light transmissive member disposed between the first semiconductor light emitting element and the second semiconductor light emitting element,
A plurality of first reflecting surfaces that reflect the light emitted from the first semiconductor light emitting element in the irradiation direction and a light incident surface on which the light emitted from the second semiconductor light emitting element is incident on the light transmitting member. A plurality of second reflecting surfaces for internally reflecting the light emitted from the second semiconductor light emitting element and incident on the light incident surface in the irradiation direction, and the second reflecting surface emitted from the second semiconductor light emitting element. Forming a plurality of light exit surfaces for emitting the light reflected at the irradiation direction,
The vehicle is characterized in that the first reflection surface and the light emission surface are alternately and continuously formed in a direction connecting the first semiconductor light emitting element and the second semiconductor light emitting element in a state where the first light emitting surface and the light emitting surface are directed in different directions. Light fixture. 第１の半導体発光素子と光透過部材の間に配置され第１の半導体発光素子から出射された光を平行光にする第１のレンズと、第２の半導体発光素子と光透過部材の間に配置され第２の半導体発光素子から出射された光を平行光にする第２のレンズのうち、少なくとも一方のレンズを設けた
ことを特徴とする請求項１に記載の車輌用灯具。 A first lens that is disposed between the first semiconductor light emitting element and the light transmitting member and converts the light emitted from the first semiconductor light emitting element to parallel light, and between the second semiconductor light emitting element and the light transmitting member. 2. The vehicular lamp according to claim 1, wherein at least one lens is provided among the second lenses arranged to collimate the light emitted from the second semiconductor light emitting element. 3. 上記光透過部材の第１の反射面と第２の反射面のうち、少なくとも一方の反射面に反射処理を施した
ことを特徴とする請求項１又は請求項２に記載の車輌用灯具。 The vehicular lamp according to claim 1 or 2, wherein at least one of the first reflecting surface and the second reflecting surface of the light transmitting member is subjected to a reflection treatment. 第１の半導体発光素子及び第２の半導体発光素子を、上記照射方向に直交し第１の半導体発光素子と第２の半導体発光素子を結ぶ方向に直交する方向に並ぶように複数配置した
ことを特徴とする請求項１、請求項２又は請求項３に記載の車輌用灯具。 A plurality of the first semiconductor light emitting elements and the second semiconductor light emitting elements are arranged so as to be aligned in a direction orthogonal to the irradiation direction and orthogonal to the direction connecting the first semiconductor light emitting element and the second semiconductor light emitting element. The vehicular lamp according to claim 1, claim 2, or claim 3. 光透過部材を挟んで上記照射方向と反対側の位置にリフレクターを配置した
ことを特徴とする請求項１、請求項２、請求項３又は請求項４に記載の車輌用灯具。 The vehicle lamp according to claim 1, 2, 3, or 4, wherein a reflector is disposed at a position opposite to the irradiation direction with a light transmission member interposed therebetween.
JP2006064116A 2006-03-09 2006-03-09 Vehicle lamp Expired - Fee Related JP4493610B2 (en)

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KR20160076086A (en) * 2014-12-22 2016-06-30 에스엘 주식회사 A lamp apparatus for vehicles

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Publication number Priority date Publication date Assignee Title
JP5779045B2 (en) * 2011-08-25 2015-09-16 スタンレー電気株式会社 Vehicle lighting
JP6616669B2 (en) * 2015-11-17 2019-12-04 スタンレー電気株式会社 Light guide and vehicle lamp

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JPH01251502A (en) * 1987-11-17 1989-10-06 Mitsubishi Cable Ind Ltd Light emitting diode luminaire
JP2000251508A (en) * 1999-02-25 2000-09-14 Stanley Electric Co Ltd Lamp for vehicle
JP2003100116A (en) * 2001-09-20 2003-04-04 Koito Mfg Co Ltd Vehicular lamp

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JPH01251502A (en) * 1987-11-17 1989-10-06 Mitsubishi Cable Ind Ltd Light emitting diode luminaire
JP2000251508A (en) * 1999-02-25 2000-09-14 Stanley Electric Co Ltd Lamp for vehicle
JP2003100116A (en) * 2001-09-20 2003-04-04 Koito Mfg Co Ltd Vehicular lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160076086A (en) * 2014-12-22 2016-06-30 에스엘 주식회사 A lamp apparatus for vehicles
KR101666511B1 (en) 2014-12-22 2016-10-17 에스엘 주식회사 A lamp apparatus for vehicles

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