JP2014007023A - Vehicular lighting fixture - Google Patents

Vehicular lighting fixture Download PDF

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JP2014007023A
JP2014007023A JP2012140862A JP2012140862A JP2014007023A JP 2014007023 A JP2014007023 A JP 2014007023A JP 2012140862 A JP2012140862 A JP 2012140862A JP 2012140862 A JP2012140862 A JP 2012140862A JP 2014007023 A JP2014007023 A JP 2014007023A
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light
reflector
light source
lens
vehicular lamp
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Teruhiko Mihara
輝彦 三原
Eiji Kawamoto
英治 河本
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Stanley Electric Co Ltd
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Stanley Electric Co 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

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

PROBLEM TO BE SOLVED: To allow a vehicular lighting fixture to have a DRL function with excellent optical performance at a low manufacturing cost.SOLUTION: A DRL light source unit 4 constituting a vehicular lighting fixture includes: an LED light source part 10 in which an LED light source 13 having an LED element is mounted on a substrate 14; a condenser lens 20 for converting the light emitted from the LED light source 13 into nearly parallel light; a reflector 30 for reflecting the nearly parallel light converted by the condenser lens 20 toward an inner lens 40 located forward of the reflector 30; and the inner lens 40 which transmits the reflected light from the reflector 30 and emits the light toward the outer lens located forward of the inner lens 40.

Description

本発明は、車両用灯具に関するものであり、詳しくは、例えばＤＲＬ（Daytime Running Lamp）の機能を有する車両用灯具に関する。   The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp having a DRL (Daytime Running Lamp) function, for example.

従来、この種の車両用灯具としては、例えば「特開２０１０−２６７４６８号公報（特許文献１）」あるいは「特開２０１２−４８８９６号公報（特許文献２）」に開示された車両用灯具が知られている。   Conventionally, as this type of vehicular lamp, for example, a vehicular lamp disclosed in “JP 2010-267468 A (Patent Document 1)” or “JP 2012-48896 A (Patent Document 2)” is known. It has been.

特許文献１の車両用灯具は、ヘッドランプのランプハウジング内の下側領域に、車両の中央部から側方に向かうＤＲＬユニットが配設されている。
また、特許文献２の車両用灯具は、灯具の灯室内の上部に、車両の車幅方向に延設されたＤＲＬ用光源ユニットを有している。 In the vehicular lamp disclosed in Patent Document 1, a DRL unit directed from the center of the vehicle to the side is disposed in a lower region in the lamp housing of the headlamp.
In addition, the vehicular lamp of Patent Document 2 has a DRL light source unit that extends in the vehicle width direction of the vehicle at the upper part of the lamp chamber of the lamp.

特開２０１０−２６７４６８号公報JP 2010-267468 A 特開２０１２−４８８９６号公報JP 2012-48896 A

ところで、上記特許文献１のＤＲＬユニット及び特許文献２のＤＲＬ用光源ユニットはいずれも、車両の幅方向に対して前面から側方に回り込む形状を呈しており、複数のＬＥＤを車両の幅方向に沿って所定の間隔で配置することによりＤＲＬユニット（ＤＲＬ用光源ユニット）全体から照射光が得られるようにしている。   By the way, the DRL unit of Patent Document 1 and the DRL light source unit of Patent Document 2 both have a shape that wraps around from the front side to the width direction of the vehicle, and a plurality of LEDs are arranged in the width direction of the vehicle. The irradiation light can be obtained from the entire DRL unit (DRL light source unit) by being arranged at a predetermined interval along the line.

そのため、複数のＬＥＤを使用することによる材料コストの高騰、及び複数のＬＥＤの使用によるＬＥＤ実装構造の複雑化に伴う設計・製造コストの高騰を招くことになる。また、複数のＬＥＤの使用による実装工数の増加によっても製造コストが高騰する。   Therefore, the material cost increases due to the use of a plurality of LEDs, and the design / manufacturing costs increase due to the complexity of the LED mounting structure due to the use of the plurality of LEDs. In addition, the manufacturing cost increases due to an increase in the number of mounting steps due to the use of a plurality of LEDs.

そこで、本発明は上記問題に鑑みて創案なされたもので、その目的とするところは、車両用灯具に対して安価な製造コストによって光学特性が良好なＤＲＬ機能を持たせることにある。   Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a DRL function with good optical characteristics at a low manufacturing cost for a vehicular lamp.

上記課題を解決するために、本発明の請求項１に記載された発明は、ＬＥＤ光源と、前記ＬＥＤ光源からの出射光を受けて平行光に変換する集光レンズと、前記集光レンズからの平行光を受けて所定の方向に反射する細長のリフレクタと、前記リフレクタからの反射光を透過する細長で長手方向に湾曲したインナーレンズと、を有するＤＲＬ用光源ユニット部を備えた車両用灯具であって、前記ＤＲＬ用光源ユニット部は、アウターレンズとハウジングで形成された灯室の内部に収容され、前記集光レンズが前記リフレクタの長手方向の一端近傍の側方に位置し、前記リフレクタは、長手方向に沿って連続する三角形を長手方向に垂直な方向に平行に延設して表面を光反射処理が施された光反射面とする断面鋸歯形状の板状を呈すると共に、前記三角形の前記集光レンズに向く面はいずれも互いに平行な面で構成され、且つ連続する三角形の直線状の底辺に対して連続する三角形の高さが前記一端側から他端側に向かって次第に高くなるように形成されており、前記インナーレンズは、前記リフレクタに対して該リフレクタの前記光反射面の前方に該光反射面と対向するように配置されていることを特徴とするものである。   In order to solve the above-described problem, an invention described in claim 1 of the present invention includes an LED light source, a condensing lens that receives light emitted from the LED light source and converts the light into parallel light, and the condensing lens. Vehicular lamp comprising a light source unit for DRL having an elongated reflector that receives the parallel light and reflects in a predetermined direction, and an elongated and curved inner lens that transmits the reflected light from the reflector. The light source unit for DRL is housed in a lamp chamber formed by an outer lens and a housing, and the condenser lens is located on a side near one end in the longitudinal direction of the reflector, and the reflector Has a plate shape with a sawtooth cross-section that has a light reflecting surface on which a light reflecting treatment is performed by extending a triangle that is continuous along the longitudinal direction in parallel to a direction perpendicular to the longitudinal direction, The surfaces of the triangle facing the condenser lens are all parallel to each other, and the height of the triangle that is continuous with respect to the linear base of the continuous triangle is from the one end side toward the other end side. The inner lens is formed so as to be gradually higher, and is disposed in front of the light reflecting surface of the reflector so as to face the light reflecting surface with respect to the reflector. is there.

また、本発明の請求項２に記載された発明は、請求項１において、前記ＬＥＤ光源は、前記ハウジングに取り付けられていることを特徴とするものである。   The invention described in claim 2 of the present invention is characterized in that, in claim 1, the LED light source is attached to the housing.

また、本発明の請求項３に記載された発明は、請求項１又は請求項２において、前記集光レンズは、前記インナーレンズと一体に形成されていることを特徴とするものである。   The invention described in claim 3 of the present invention is characterized in that, in claim 1 or 2, the condenser lens is formed integrally with the inner lens.

また、本発明の請求項４に記載された発明は、請求項１〜請求項３のいずれかにおいて、前記リフレクタは、単独であるいはエクステンションと一体に形成されていることを特徴とするものである。   The invention described in claim 4 of the present invention is characterized in that, in any one of claims 1 to 3, the reflector is formed alone or integrally with an extension. .

また、本発明の請求項５に記載された発明は、請求項１〜請求項４のいずれかにおいて、前記集光レンズは、軸を回転軸として得られた回転体形状を呈しており、前記軸を主軸として外側に凸の回転非球面からなる第１光入射面と前記第１光入射面の側方に位置する円錐状曲面からなる第２光入射面と、前記第１光入射面及び前記第２光入射面の外側に位置し外側に凸の回転湾曲面からなる内部反射面と、前記軸に垂直な面からなる光出射面を有することを特徴とするものである。   Moreover, the invention described in claim 5 of the present invention is that in any one of claims 1 to 4, the condensing lens has a rotating body shape obtained using an axis as a rotation axis, A first light incident surface comprising a rotating aspherical surface convex outward with the axis as a main axis, a second light incident surface comprising a conical curved surface located on the side of the first light incident surface, the first light incident surface, and It has an internal reflection surface which is located outside the second light incident surface and which is convex outward and has a light exit surface which is a surface perpendicular to the axis.

本発明の照明装置は、上記［課題を解決するための手段］に記載した構成とすることにより、細長で且つ湾曲形状を呈すると共にＬＥＤ光源を一端部側にのみ配置したにも拘らず、最適設計された集光レンズ及びリフレクタをインナーレンズを含めて最適配置することにより光利用効率を高めることができると共にＬＥＤ光源から遠い領域にも光を回り込ませることが可能となり、ＬＥＤ光源の少数化による製造コストの低減及び省電力化と同時に、全体が明く且つ明るさの均一性が良好な視認性の高いＤＲＬ用光源ユニット部を実現することができた。   The illuminating device of the present invention has the configuration described in the above [Means for Solving the Problems], so that it has an elongated and curved shape and is optimal even though the LED light source is disposed only on one end side. By optimally arranging the designed condensing lens and reflector including the inner lens, it is possible to increase the light utilization efficiency and to make the light wrap around the area far from the LED light source. At the same time as the reduction in manufacturing cost and power saving, it was possible to realize a DRL light source unit portion having high visibility and good overall brightness and good brightness uniformity.

車両用灯具の正面視による説明図である。It is explanatory drawing by the front view of a vehicle lamp. ＬＥＤ光源部の断面説明図である。It is sectional explanatory drawing of a LED light source part. 集光レンズの断面説明図である。It is sectional explanatory drawing of a condensing lens. リフレクタの断側面説明図である。It is a section side explanatory view of a reflector. インナーレンズを前方から見た斜視説明図である。It is the isometric view explanatory view which looked at the inner lens from the front. ＤＲＬ用光源ユニット部の構成説明図である。FIG. 5 is a configuration explanatory diagram of a DRL light source unit. 図６の部分拡大説明図である。FIG. 7 is a partially enlarged explanatory view of FIG. 6.

以下、この発明の好適な実施形態を図１〜図７を参照しながら、詳細に説明する（同一部分については同じ符号を付す）。尚、以下に述べる実施形態は、本発明の好適な具体例であるから、技術的に好ましい種々の限定が付されているが、本発明の範囲は、以下の説明において特に本発明を限定する旨の記載がない限り、これらの実施形態に限られるものではない。   Hereinafter, preferred embodiments of the present invention will be described in detail with reference to FIGS. 1 to 7 (the same parts are given the same reference numerals). The embodiments described below are preferable specific examples of the present invention, and thus various technically preferable limitations are given. However, the scope of the present invention particularly limits the present invention in the following description. Unless stated to the effect, the present invention is not limited to these embodiments.

本発明の車両用灯具１は、図１（車両用灯具の正面視による説明図）にあるように、前方に開口を有するハウジング５とその開口を塞ぐようにハウジング５に取り付けられた前面透明カバー（以下、アウターレンズと呼称する）６で形成された灯室７の内部に、例えば、すれ違いビーム用光源ユニット部２及び走行ビーム用光源ユニット部３と共に、半導体発光素子を発光源とするＤＲＬ用光源ユニット部４を備えたものである。   The vehicle lamp 1 according to the present invention includes a housing 5 having an opening in the front and a front transparent cover attached to the housing 5 so as to close the opening, as shown in FIG. (Hereinafter referred to as an outer lens) 6 for a DRL with a semiconductor light emitting element as a light source together with, for example, a light source unit 2 for a passing beam and a light source unit 3 for a traveling beam. A light source unit 4 is provided.

この車両用灯具１は、同図にあるように、下方にすれ違いビーム用光源ユニット部２と走行ビーム用光源ユニット部３を有しており、その上方にＤＲＬ用光源ユニット部４を備えている。   As shown in the figure, the vehicular lamp 1 has a low beam light source unit 2 and a traveling beam light source unit 3 below, and a DRL light source unit 4 above it. .

ＤＲＬ用光源ユニット部４は、半導体発光素子（例えば、ＬＥＤ素子）が実装されたＬＥＤ光源が基板に搭載されてなるＬＥＤ光源部、ＬＥＤ光源からの出射光を略平行光に変換する集光レンズ、集光レンズで変換された略平行光を前方に位置するインナーレンズに向けて反射するリフレクタ、リフレクタによる反射光を透過して前方に位置するアウターレンズに向けて照射するインナーレンズを有している。   The DRL light source unit 4 includes an LED light source unit in which an LED light source on which a semiconductor light emitting element (for example, an LED element) is mounted is mounted on a substrate, and a condensing lens that converts light emitted from the LED light source into substantially parallel light. A reflector that reflects the substantially parallel light converted by the condenser lens toward the inner lens located in the front, and an inner lens that transmits the reflected light from the reflector and irradiates the outer lens located in the front. Yes.

以下、ＬＥＤ光源部、集光レンズ、リフレクタ及びインナーレンズの夫々について図２〜図５を参照して詳細に説明する。   Hereinafter, each of the LED light source unit, the condenser lens, the reflector, and the inner lens will be described in detail with reference to FIGS.

ＬＥＤ光源部１０は、図２（ＬＥＤ光源部の断面説明図）に示すように、ＬＥＤ素子１１が樹脂１２で樹脂封止されてＬＥＤ光源１３が形成され、該ＬＥＤ光源１３が基板１４に搭載されている。   As shown in FIG. 2 (cross-sectional explanatory diagram of the LED light source unit), the LED light source unit 10 is formed by sealing the LED element 11 with resin 12 to form the LED light source 13, and the LED light source 13 is mounted on the substrate 14. Has been.

ＬＥＤ光源１３は、特に灯具の照射光として白色光を照射する場合は、ＬＥＤ素子１１に青色光を発光する青色ＬＥＤ素子を用いると共に、該青色ＬＥＤ素子が青色ＬＥＤ素子からの青色光に励起されて青色光を黄色光に波長変換する黄色蛍光体を混入した樹脂１２、或いは、青色ＬＥＤ素子からの青色光に励起されて青色光を赤色光に波長変換する赤色蛍光体と青色ＬＥＤ素子からの青色光に励起されて青色光を緑色光に波長変換する緑色蛍光体との混合蛍光体を混入した樹脂１２で樹脂封止される。   The LED light source 13 uses a blue LED element that emits blue light as the LED element 11 and emits blue light, and the blue LED element is excited by blue light from the blue LED element. From the resin 12 mixed with a yellow phosphor that converts the wavelength of blue light into yellow light, or from the red phosphor and the blue LED element that is excited by the blue light from the blue LED element and converts the wavelength of the blue light into red light. Resin-sealed with resin 12 mixed with a phosphor mixed with a green phosphor that is excited by blue light and converts the wavelength of blue light into green light.

集光レンズ２０は図３（集光レンズの断面説明図）にあるように、軸Ｘを回転軸として得られた回転体形状を呈しており、光入射面２１、内部反射面（全反射面）２２及び光出射面２３の３つの光学機能面を有している。   As shown in FIG. 3 (cross-sectional explanatory view of the condensing lens), the condensing lens 20 has a rotating body shape obtained with the axis X as a rotation axis, and includes a light incident surface 21, an internal reflection surface (total reflection surface). ) 22 and the light exit surface 23.

そのうち光入射面２１は、軸Ｘを主軸とし主軸上のＦを焦点位置とする焦点Ｆ側に凸の回転双曲面或いは双曲面に近似した回転非球面からなる第１光入射面２１ａと、第１光入射面２１ａの上端（焦点Ｆと反対側の端）から下方（焦点Ｆ側の方向）に向かって軸Ｘから離れる方向に延びる直線を軸Ｘを回転軸として回転させて得られる円錐状曲面からなる第２光入射面２１ｂからなっている。   Among them, the light incident surface 21 includes a first light incident surface 21a composed of a rotating hyperboloid convex to the focal point F side having an axis X as a main axis and F on the main axis as a focal position, or a rotating aspheric surface approximated to a hyperboloid, A conical shape obtained by rotating a straight line extending in a direction away from the axis X from the upper end (end opposite to the focal point F) of the light incident surface 21a downward (in the direction of the focal point F) with the axis X as a rotation axis. The second light incident surface 21b is a curved surface.

内部反射面２２は全反射面からなり、第２光入射面２１ｂの下端（焦点Ｆ側の端）から上方（焦点Ｆと反対側の方向）に向かって軸Ｘから離れる方向に且つ軸Ｘと反対側に凸状に延びる湾曲線を軸Ｘを回転軸として回転させて得られる回転湾曲面からなっている。   The internal reflection surface 22 is a total reflection surface, and moves away from the axis X from the lower end (end on the focal point F side) of the second light incident surface 21b toward the upper side (direction opposite to the focal point F). It consists of a rotational curved surface obtained by rotating a curved line extending in a convex shape on the opposite side about the axis X as a rotational axis.

光出射面２３は、軸Ｘに垂直な平面からなっている。   The light exit surface 23 is a plane perpendicular to the axis X.

そこで、焦点Ｆの位置から発せられて第１光入射面２１ａに向かう光線Ｌ１は、第１光入射面２１ａで屈折されて軸Ｘに対して平行光となって集光レンズ２０内に入射し、集光レンズ２０内を導光されて光出射面２３に向かう。   Therefore, the light beam L1 emitted from the position of the focal point F and directed to the first light incident surface 21a is refracted by the first light incident surface 21a and becomes parallel light with respect to the axis X and enters the condenser lens 20. The light is guided through the condenser lens 20 toward the light exit surface 23.

また、焦点Ｆの位置から発せられて第２光入射面２１ｂに向かう光線Ｌ２は、第２光入射面２１ｂで屈折されて集光レンズ２０内に入射し、集光レンズ２０内を導光されて内部反射面２２に向かい、内部反射面２２に至った光線Ｌ２は内部反射面２２で反射（全反射）されて軸Ｘに対して平行光となって更に集光レンズ２０内を導光されて光出射面２３に向かう。   The light beam L2 emitted from the position of the focal point F and traveling toward the second light incident surface 21b is refracted by the second light incident surface 21b and enters the condenser lens 20, and is guided through the condenser lens 20. Then, the light beam L2 that has reached the internal reflection surface 22 and reached the internal reflection surface 22 is reflected (total reflection) by the internal reflection surface 22 and becomes parallel light with respect to the axis X, and is further guided through the condenser lens 20. Toward the light exit surface 23.

従って、焦点Ｆの位置から発せられて第１光入射面２１ａから集光レンズ２０内に入射した光線Ｌ１及び焦点Ｆの位置から発せられて第２光入射面２１ｂから集光レンズ２０内に入射した光線Ｌ２は、いずれも集光レンズ２０内を導光されて平行光線に変換され、光出射面２３から軸Ｘに対する平行光線となって外部に向けて出射される。   Therefore, the light beam L1 emitted from the position of the focal point F and incident from the first light incident surface 21a into the condenser lens 20 and the position of the focal point F and incident from the second light incident surface 21b into the condenser lens 20 are entered. All of the light rays L2 are guided through the condenser lens 20 and converted into parallel light rays, and emitted from the light exit surface 23 to the outside as parallel light rays with respect to the axis X.

リフレクタ３０は図４(リフレクタの断側面説明図)にあるように、細長で長手方向に沿って連続する三角形３１を長手方向に垂直な方向に平行に延設してなる断面鋸歯形状の板状を呈しており、少なくとも一方の面には表面にアルミ蒸着等の光反射処理によって光反射面３２が形成されている。   As shown in FIG. 4 (reflecting side view of the reflector), the reflector 30 is a plate having a sawtooth shape in cross section formed by extending a thin triangle 31 extending along the longitudinal direction in parallel with a direction perpendicular to the longitudinal direction. A light reflecting surface 32 is formed on at least one surface by light reflecting treatment such as aluminum vapor deposition.

リフレクタ３０の一方の面で且つ光反射面３２が形成された面において、三角形３１が連続する方向（長手方向）の少なくとも一端部３０ａ側に向く面３１ａはいずれも互いに平行な面で構成されており、且つ連続する三角形３１の直線状の底辺に対して連続する三角形３１の高さは前記一端部３０ａ側から他端部３０ｂ側に向かって次第に高くなるように形成されている。   Of the one surface of the reflector 30 and the surface on which the light reflecting surface 32 is formed, the surfaces 31a facing the at least one end portion 30a side in the direction (longitudinal direction) in which the triangles 31 are continuous are configured as surfaces parallel to each other. In addition, the height of the continuous triangle 31 with respect to the straight base of the continuous triangle 31 is formed so as to gradually increase from the one end 30a side toward the other end 30b side.

また、リフレクタ３０の前記他端部３０ｂは、連続する三角形３１の頂点３１ｂ側に折り曲げられて折曲部３３が形成されている。   The other end 30 b of the reflector 30 is bent toward the apex 31 b of the continuous triangle 31 to form a bent portion 33.

インナーレンズ４０は図５（インナーレンズを前方から見た斜視説明図）にあるように、ポリカーボネート樹脂やアクリル樹脂等の透明部材からなると共にリフレクタ３０と同様に細長で長手方向（車両の車幅方向）に湾曲した形状を呈している。   The inner lens 40 is made of a transparent member such as polycarbonate resin or acrylic resin as shown in FIG. 5 (an explanatory perspective view when the inner lens is viewed from the front) and is elongated and longitudinally similar to the reflector 30 (in the vehicle width direction of the vehicle). ) Is curved.

そこで、上述したＬＥＤ光源部１０、集光レンズ２０、リフレクタ３０及びインナーレンズ４０を備えたＤＲＬ用光源ユニット部４の構成について以下に図６及び図７を用いて説明する。   Therefore, the configuration of the DRL light source unit 4 including the LED light source unit 10, the condensing lens 20, the reflector 30, and the inner lens 40 described above will be described below with reference to FIGS.

インナーレンズ４０は図６（ＤＲＬ用光源ユニット部の構成説明図）に示すように、リフレクタ３０に対してリフレクタ３０の光反射面３２の前方に該光反射面３２と対向するように配置され固定されている。インナーレンズ４０には集光レンズ２０が一体に形成されており、集光レンズ２０はリフレクタ３０の一端部３０ａ近傍の側方に位置すると共に、光出射面２３がリフレクタ３０側に向いている。   The inner lens 40 is disposed and fixed in front of the light reflecting surface 32 of the reflector 30 so as to face the light reflecting surface 32 with respect to the reflector 30 as shown in FIG. 6 (configuration explanatory diagram of the DRL light source unit). Has been. The condensing lens 20 is integrally formed with the inner lens 40, and the condensing lens 20 is positioned on the side near the one end 30 a of the reflector 30, and the light emitting surface 23 faces the reflector 30 side.

なお、このように構成されたＤＲＬ用光源ユニット部４は図示しないが、リフレクタ３０をハウジング５に固定することによりリフレクタ３０を介して灯具の灯室内に収容支持される。   Although not shown, the DRL light source unit 4 configured as described above is housed and supported in the lamp chamber of the lamp through the reflector 30 by fixing the reflector 30 to the housing 5.

ＬＥＤ光源部１０は図７（図６の部分拡大説明図）にあるように、ＬＥＤ光源１３が搭載された基板１４がハウジング５に取り付けられ、ＬＥＤ光源１３（ＬＥＤ素子１１）の位置が集光レンズ２０の焦点Ｆの位置に位置するように配置されている。   As shown in FIG. 7 (partially enlarged explanatory view of FIG. 6), the LED light source unit 10 has a substrate 14 on which the LED light source 13 is mounted attached to the housing 5, and the position of the LED light source 13 (LED element 11) is condensed. It arrange | positions so that it may be located in the position of the focus F of the lens 20. FIG.

このように構成されたＤＲＬ用光源ユニット部４において、ＬＥＤ素子１１が発光するとＬＥＤ光源１３からの出射光は前方に位置する集光レンズ２０内に入射して集光レンズ２０内を導光されて平行光に変換され、光出射面２３から出射してリフレクタ３０の光反射面３２のＬＥＤ光源１３に対向する面３１ａに向けて照射される。   In the DRL light source unit 4 configured as described above, when the LED element 11 emits light, the emitted light from the LED light source 13 enters the condenser lens 20 positioned in front and is guided through the condenser lens 20. Are converted into parallel light, emitted from the light emitting surface 23, and irradiated toward the surface 31 a of the light reflecting surface 32 of the reflector 30 facing the LED light source 13.

図６に戻って、集光レンズ２０からの照射光を一端部３０ａ近傍の側方から照射されたリフレクタ３０の光反射面３２は、集光レンズ２０側に向く面３１ａが受光面となって集光レンズ２０からの照射光を受け、前方に位置するインナーレンズ４０に向けて反射する。   Returning to FIG. 6, the light reflecting surface 32 of the reflector 30 irradiated with the light irradiated from the condensing lens 20 from the side near the one end portion 30 a serves as a light receiving surface. The light irradiated from the condenser lens 20 is received and reflected toward the inner lens 40 located in front.

この場合、集光レンズ２０からリフレクタ３０の光反射面３２に向けて照射される照射光は平行光であり、集光レンズ２０からの照射光を受光して反射する受光反射面３１ａはいずれも互いに平行な面で構成されている。したがって、受光反射面３１ａで反射されてインナーレンズ４０に向かう反射光Ｌａは平行光であり、インナーレンズ４０ではそのまま平行光として透過して前方に照射される。   In this case, the irradiation light irradiated from the condensing lens 20 toward the light reflecting surface 32 of the reflector 30 is parallel light, and any of the light receiving and reflecting surfaces 31a that receive and reflect the irradiation light from the condensing lens 20 is provided. It is comprised by the mutually parallel surface. Therefore, the reflected light La reflected by the light receiving / reflecting surface 31a and traveling toward the inner lens 40 is parallel light, and is transmitted through the inner lens 40 as parallel light and irradiated forward.

それと同時に、受光反射面３１ａで反射された反射光が全て直接インナーレンズ４０から外部に出射されるものではなく、インナーレンズ４０の内面で内面反射(全反射)されて反射光がリフレクタ３０の光反射面３２に戻り、光反射面３２で反射されて再度インナーレンズ４０に向かう光Ｌｂも存在する。そのためこのような、光反射面３２とインナーレンズ４０による光反射の繰り返し過程においてその一部はインナーレンズ４０を透過して外部に出射され、その結果、ＬＥＤ光源からの出射光の利用効率が高まって細長のインナーレンズ４０全面に亘って光出射量の増大を図ることが可能となった。   At the same time, not all the reflected light reflected by the light receiving / reflecting surface 31a is directly emitted from the inner lens 40 to the outside, but is internally reflected (totally reflected) by the inner surface of the inner lens 40 and the reflected light is reflected by the reflector 30. There is also light Lb that returns to the reflection surface 32 and is reflected by the light reflection surface 32 and travels again toward the inner lens 40. For this reason, part of the light reflection surface 32 and the inner lens 40 is repeatedly reflected through the inner lens 40 and emitted to the outside. As a result, the efficiency of use of the emitted light from the LED light source is increased. Thus, it is possible to increase the light emission amount over the entire surface of the elongated inner lens 40.

また、集光レンズ２０からリフレクタ３０の折曲部３３に向けて照射される照射光Ｌｃは、折曲部３３の光反射面で反射されて反射光がインナーレンズ４０を透過して外部に出射され、光の利用効率の向上に寄与する。   Further, the irradiation light Lc irradiated from the condenser lens 20 toward the bent portion 33 of the reflector 30 is reflected by the light reflecting surface of the bent portion 33 and the reflected light passes through the inner lens 40 and is emitted to the outside. And contributes to the improvement of light utilization efficiency.

このように、車両用灯具を構成するＤＲＬ用光源ユニット部は、細長で且つ湾曲形状を呈すると共にＬＥＤ光源を一端部側にのみ配置したにも拘らず、最適設計された集光レンズ及びリフレクタをインナーレンズを含めて最適配置することにより光利用効率を高めることができると共にＬＥＤ光源から遠い領域にも光を回り込ませることが可能となり、ＬＥＤ光源の少数化による製造コストの低減及び省電力化と同時に、全体が明く且つ明るさの均一性が良好な視認性の高いＤＲＬ用光源ユニット部を実現することができた。   As described above, the DRL light source unit constituting the vehicular lamp is elongated and has a curved shape, and the optimally designed condensing lens and reflector are provided despite the fact that the LED light source is disposed only on one end side. Optimum placement including the inner lens can increase the light utilization efficiency and allow light to circulate in areas far from the LED light source, reducing manufacturing costs and reducing power consumption by reducing the number of LED light sources. At the same time, it was possible to realize a DRL light source unit portion with high visibility that was bright overall and had good brightness uniformity.

なお、上記ＤＲＬ用光源ユニット部の構成においては、リフレクタをハウジングに固定するものとしたが、リフレクタを灯具全体に配設されるエクステンションと一体に形成することも可能である。その場合、エクステンションとの一体成形及び一括光反射処理により製造コストの低コスト化を図ることができる。   In the configuration of the DRL light source unit, the reflector is fixed to the housing. However, the reflector can be formed integrally with an extension provided in the entire lamp. In that case, the manufacturing cost can be reduced by integral molding with the extension and collective light reflection processing.

また、リフレクタの連続する三角形の直線状の底辺に対して連続する三角形の高さを一端部側から他端部側に向かって次第に高くなるように形成したが、必ずしもこのような形状に限られるものではなく、例えば、三角形の高さを一端部側から他端部側に向かって同一の高さとすることも可能である。   In addition, the height of the continuous triangle with respect to the linear base of the continuous triangle of the reflector is formed so as to gradually increase from the one end side toward the other end side, but is not necessarily limited to such a shape. For example, the height of the triangle may be the same height from one end to the other end.

その場合、光学的な作用効果については上述した実施形態に比べて多少劣るが、光反射面を平面で構成した場合に比べるとはるかに大きい。   In that case, the optical effect is somewhat inferior to that of the above-described embodiment, but is much larger than that in the case where the light reflecting surface is configured as a plane.

なお、上記ＤＲＬ用光源ユニット部はＤＲＬ機能の他に灯具を構成する他の機能、例えばＰＬ（Position Lamp）としても活用することができる。   The DRL light source unit can be used not only as a DRL function but also as another function constituting a lamp, such as a PL (Position Lamp).

１… 車両用灯具
２… すれ違いビーム用光源ユニット部
３… 走行ビーム用光源ユニット部
４… ＤＲＬ用光源ユニット部
５… ハウジング
６… アウターレンズ
７… 灯室
１０… ＬＥＤ光源部
１１… ＬＥＤ素子
１２… 樹脂
１３… ＬＥＤ光源
１４… 基板
２０… 集光レンズ
２１… 光入射面
２１ａ… 第１光入射面
２１ｂ… 第２光入射面
２２… 内部反射面（全反射面）
２３… 光出射面
３０… リフレクタ
３０ａ… 一端部
３０ｂ… 他端部
３１… 三角形
３１ａ… 面
３１ｂ… 頂点
３２… 光反射面
３３… 折曲部
４０… インナーレンズ DESCRIPTION OF SYMBOLS 1 ... Vehicle lamp 2 ... Passing beam light source unit part 3 ... Traveling beam light source unit part 4 ... DRL light source unit part 5 ... Housing 6 ... Outer lens 7 ... Lamp chamber 10 ... LED light source part 11 ... LED element 12 ... Resin 13 ... LED light source 14 ... Substrate 20 ... Condensing lens 21 ... Light incident surface 21a ... First light incident surface 21b ... Second light incident surface 22 ... Internal reflection surface (total reflection surface)
23 ... Light exit surface 30 ... Reflector 30a ... One end 30b ... Other end 31 ... Triangle 31a ... Surface 31b ... Vertex 32 ... Light reflecting surface 33 ... Bent part 40 ... Inner lens

Claims (5)

ＬＥＤ光源と、
前記ＬＥＤ光源からの出射光を受けて平行光に変換する集光レンズと、
前記集光レンズからの平行光を受けて所定の方向に反射する細長のリフレクタと、
前記リフレクタからの反射光を透過する細長で長手方向に湾曲したインナーレンズと、を有するＤＲＬ用光源ユニット部を備えた車両用灯具であって、
前記ＤＲＬ用光源ユニット部は、アウターレンズとハウジングで形成された灯室の内部に収容され、
前記集光レンズが前記リフレクタの長手方向の一端近傍の側方に位置し、
前記リフレクタは、長手方向に沿って連続する三角形を長手方向に垂直な方向に平行に延設して表面を光反射処理が施された光反射面とする断面鋸歯形状の板状を呈すると共に、前記三角形の前記集光レンズに向く面はいずれも互いに平行な面で構成され、且つ連続する三角形の直線状の底辺に対して連続する三角形の高さが前記一端側から他端側に向かって次第に高くなるように形成されており、
前記インナーレンズは、前記リフレクタに対して該リフレクタの前記光反射面の前方に該光反射面と対向するように配置されていることを特徴とする車両用灯具。 An LED light source;
A condenser lens that receives light emitted from the LED light source and converts it into parallel light;
An elongated reflector that receives parallel light from the condenser lens and reflects it in a predetermined direction;
A vehicular lamp including a light source unit for DRL having an elongated and longitudinally curved inner lens that transmits reflected light from the reflector,
The DRL light source unit is housed in a lamp chamber formed by an outer lens and a housing,
The condensing lens is located on the side near one end in the longitudinal direction of the reflector;
The reflector has a plate shape with a sawtooth cross section having a triangular surface continuous in the longitudinal direction and extending in parallel to a direction perpendicular to the longitudinal direction, and the surface being a light reflecting surface subjected to a light reflecting treatment. The surfaces of the triangle facing the condenser lens are all parallel to each other, and the height of the triangle that is continuous with respect to the linear base of the continuous triangle is from the one end side toward the other end side. It is formed to become gradually higher,
The vehicular lamp, wherein the inner lens is disposed in front of the light reflecting surface of the reflector so as to face the light reflecting surface with respect to the reflector. 前記ＬＥＤ光源は、前記ハウジングに取り付けら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 vehicular lamp according to claim 1, wherein the LED light source is attached to the housing. 前記集光レンズは、前記インナーレンズと一体に形成されていることを特徴とする請求項１又は請求項２に記載の車両用灯具。   The vehicular lamp according to claim 1, wherein the condensing lens is formed integrally with the inner lens. 前記リフレクタは、単独であるいはエクステンションと一体に形成されていることを特徴とする請求項１〜請求項３のいずれかに記載の車両用灯具。   The vehicular lamp according to any one of claims 1 to 3, wherein the reflector is formed alone or integrally with an extension. 前記集光レンズは、軸を回転軸として得られた回転体形状を呈しており、前記軸を主軸として外側に凸の回転非球面からなる第１光入射面と前記第１光入射面の側方に位置する円錐状曲面からなる第２光入射面と、
前記第１光入射面及び前記第２光入射面の外側に位置し外側に凸の回転湾曲面からなる内部反射面と、
前記軸に垂直な面からなる光出射面を有することを特徴とする請求項１〜請求項４のいずれかに記載の車両用灯具。 The condensing lens has a rotating body shape obtained using an axis as a rotation axis, and has a first light incident surface made of a rotating aspherical surface convex outward with the axis as a main axis, and the first light incident surface side A second light incident surface consisting of a conical curved surface located in the direction,
An internal reflection surface consisting of a rotationally curved surface convex outside and located outside the first light incident surface and the second light incident surface;
The vehicular lamp according to any one of claims 1 to 4, wherein the vehicular lamp has a light emission surface formed of a surface perpendicular to the axis.
JP2012140862A 2012-06-22 2012-06-22 Vehicular lighting fixture Pending JP2014007023A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111578220A (en) * 2020-05-08 2020-08-25 浙江嘉利（丽水）工业股份有限公司 Automobile, automobile lamp and light-emitting structure thereof
CN114001296A (en) * 2021-10-19 2022-02-01 浙江高信技术股份有限公司 Total reflection lampshade and LED tunnel lamp
JP7435322B2 (en) 2020-07-03 2024-02-21 コニカミノルタ株式会社 Ultrasonic flaw detection equipment, ultrasonic flaw detection method, and program

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003059312A (en) * 2001-08-15 2003-02-28 Koito Mfg Co Ltd Vehicule lighting device
JP2004139903A (en) * 2002-10-18 2004-05-13 Ichikoh Ind Ltd Vehicular lighting device
JP2008147003A (en) * 2006-12-08 2008-06-26 Ichikoh Ind Ltd Lamp unit of vehicular headlamp
JP2010267468A (en) * 2009-05-14 2010-11-25 Koito Mfg Co Ltd Lighting fixture for vehicle
JP2011076955A (en) * 2009-09-30 2011-04-14 Koito Mfg Co Ltd Vehicular lighting fixture
JP2011187221A (en) * 2010-03-05 2011-09-22 Stanley Electric Co Ltd Vehicular lighting fixture unit and vehicular lighting fixture

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003059312A (en) * 2001-08-15 2003-02-28 Koito Mfg Co Ltd Vehicule lighting device
JP2004139903A (en) * 2002-10-18 2004-05-13 Ichikoh Ind Ltd Vehicular lighting device
JP2008147003A (en) * 2006-12-08 2008-06-26 Ichikoh Ind Ltd Lamp unit of vehicular headlamp
JP2010267468A (en) * 2009-05-14 2010-11-25 Koito Mfg Co Ltd Lighting fixture for vehicle
JP2011076955A (en) * 2009-09-30 2011-04-14 Koito Mfg Co Ltd Vehicular lighting fixture
JP2011187221A (en) * 2010-03-05 2011-09-22 Stanley Electric Co Ltd Vehicular lighting fixture unit and vehicular lighting fixture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111578220A (en) * 2020-05-08 2020-08-25 浙江嘉利（丽水）工业股份有限公司 Automobile, automobile lamp and light-emitting structure thereof
JP7435322B2 (en) 2020-07-03 2024-02-21 コニカミノルタ株式会社 Ultrasonic flaw detection equipment, ultrasonic flaw detection method, and program
CN114001296A (en) * 2021-10-19 2022-02-01 浙江高信技术股份有限公司 Total reflection lampshade and LED tunnel lamp

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