JP6268881B2 - Vehicle lighting - Google Patents

Vehicle lighting Download PDF

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JP6268881B2
JP6268881B2 JP2013204993A JP2013204993A JP6268881B2 JP 6268881 B2 JP6268881 B2 JP 6268881B2 JP 2013204993 A JP2013204993 A JP 2013204993A JP 2013204993 A JP2013204993 A JP 2013204993A JP 6268881 B2 JP6268881 B2 JP 6268881B2
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light
light guide
guide member
lamp
supply member
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JP2015069905A (en
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真俊 中川
真俊 中川
裕章 奥
裕章 奥
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Ichikoh Industries Ltd
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Ichikoh Industries Ltd
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Description

この発明は、導光部材を備える車両用灯具に関するものである。   The present invention relates to a vehicular lamp including a light guide member.

この種の車両用灯具は、従来からある（たとえば、特許文献１、特許文献２）。以下、従来の車両用灯具について説明する。特許文献１の車両用灯具は、光源と、導光体と、を備え、導光体の光源側が直線状に形成されていて、導光体の先端側が湾曲状に形成されているものである。光源のスイッチがオン状態になると、光源から光が出射して、その光が導光体の一端から導光体中に入射して導光し、その光の一部が導光体の一側から出射し、残りの光が導光体の他端から出射するものである。   Conventionally, this kind of vehicle lamp is known (for example, Patent Document 1 and Patent Document 2). Hereinafter, a conventional vehicle lamp will be described. The vehicular lamp of Patent Document 1 includes a light source and a light guide, and the light source side of the light guide is formed in a linear shape, and the tip side of the light guide is formed in a curved shape. . When the light source switch is turned on, light is emitted from the light source, the light enters the light guide from one end of the light guide, and a part of the light is guided to one side of the light guide. The remaining light is emitted from the other end of the light guide.

特許文献２の車両用灯具は、導光部と、供給部と、結合部と、光源と、を備える。導光部と供給部との間に結合部が一体に結合されていて、光源が、供給部の一端あるいは両端に設けられているものである。光源から光が出射して、その光が供給部中に入射して導光し、その光が結合部を介して導光部に導光し、その光が導光部から外部に出射するものである。   The vehicular lamp of Patent Document 2 includes a light guide unit, a supply unit, a coupling unit, and a light source. A coupling portion is integrally coupled between the light guide portion and the supply portion, and a light source is provided at one end or both ends of the supply portion. Light emitted from a light source, the light is incident into the supply unit and guided, the light is guided to the light guide unit through the coupling unit, and the light is emitted from the light guide unit to the outside It is.

特許第５００７３６２号公報Japanese Patent No. 5007362 欧州特許出願公開第２５８４２４９号明細書European Patent Application Publication No. 2584249

ところが、特許文献１の車両用灯具は、導光体の光源側が直線状に形成されていて、導光体の先端側が湾曲状に形成されているものであるから、光が導光体の直線状の部分から湾曲状の部分に導かれる際に、臨界角の原理により、導光体から外部に抜けて行く場合がある。すなわち、光が損失する場合がある。特許文献２の車両用灯具は、導光部と供給部との間に結合部が一体に結合されているものであるから、構想が複雑であり、製造コスト上問題がある。   However, in the vehicular lamp of Patent Document 1, since the light source side of the light guide is formed in a straight line and the tip side of the light guide is formed in a curved shape, the light is a straight line of the light guide. When the light is guided from the shaped part to the curved part, it may escape from the light guide to the outside due to the critical angle principle. That is, light may be lost. Since the vehicular lamp of Patent Document 2 has a coupling portion integrally coupled between the light guide portion and the supply portion, the concept is complicated and there is a problem in manufacturing cost.

この発明が解決しようとする課題は、従来の車両用灯具では、光が導光体から外部に抜けて損失する場合があり、構造が複雑で製造コスト上問題がある、という点にある。   The problem to be solved by the present invention is that, in the conventional vehicular lamp, light may be lost through the light guide to the outside, the structure is complicated, and there is a problem in manufacturing cost.

この発明（請求項１にかかる発明）は、灯室を区画するランプハウジングおよびランプレンズと、灯室内に配置されている光源および棒形状をなす導光部材および板形状もしくは棒形状をなす光供給部材と、を備え、導光部材と光供給部材とは、平行もしくはほぼ平行に併設されていて、車両の上側から見た形状が湾曲傾斜しており、光供給部材は、光源からの光を入射させる一端面の入射面と、入射面から入射した光を導光部材に供給させる一側面の供給部と、を有し、導光部材は、供給部とは対向しない隣接した位置にあり、ランプレンズと対向する一側面に設けられていて、供給部から供給された光を出射させる出射面、を有し、光源に近い光供給部材の一端側の部分の正面及び背面を、導光部材と光供給部材との対向部分側から反対部分側にかけて互いに末広がりに傾斜させ、光源から少し遠い光供給部材の中央側の部分の正面及び背面を、導光部材と光供給部材との対向部分側から反対部分側にかけて互いに平行とし、光源から遠い光供給部材の他端側の部分の正面及び背面を、導光部材と光供給部材との対向部分側から反対部分側にかけて互いに末窄まりに傾斜させることで、導光部材中に供給する光の量を均一もしくはほぼ均一に調整する、ことを特徴とする。 The present invention (the invention according to claim 1) includes a lamp housing and a lamp lens that define a lamp chamber, a light source disposed in the lamp chamber, a light guide member having a bar shape, and a light supply having a plate shape or a bar shape. The light guide member and the light supply member are provided in parallel or substantially in parallel, and the shape viewed from the upper side of the vehicle is curved and inclined, and the light supply member receives light from the light source. An incident surface of one end surface to be incident, and a supply portion on one side surface that supplies light incident from the incident surface to the light guide member, and the light guide member is in an adjacent position that does not face the supply portion, provided on one side facing the lamp lens, have a emitting surface, for emitting the supplied light from a supply, the front and back of one end portion of the light supply member close to the light source, the light guide member Opposite from the opposite side of the light supply member The front and back of the central portion of the light supply member that is slightly farther from the light source are parallel to each other from the opposite portion side to the opposite portion side of the light guide member and the light supply member. The front and back surfaces of the portion on the other end side of the distant light supply member are supplied into the light guide member by inclining each other from the opposite portion side to the opposite portion side of the light guide member and the light supply member. The amount of light is adjusted to be uniform or almost uniform .

この発明（請求項２にかかる発明）は、導光部材および光供給部材の一端もしくは両端が、灯室内の端側に配置されていて、導光部材の端が、光供給部材の端よりも、ランプハウジングもしくはランプレンズのうち少なくともいずれか一方に近接している、ことを特徴とする。 In this invention (the invention according to claim 2 ), one end or both ends of the light guide member and the light supply member are disposed on the end side in the lamp chamber, and the end of the light guide member is more than the end of the light supply member. , In the vicinity of at least one of the lamp housing and the lamp lens.

この発明（請求項３にかかる発明）は、導光部材と光供給部材とが、供給部において、一体となっている構造である、ことを特徴とする。 The present invention (invention according to claim 3 ) is characterized in that the light guide member and the light supply member are integrated in the supply section.

この発明の車両用灯具は、導光部材と光供給部材とが平行もしくはほぼ平行に併設されているので、光が光供給部材から導光部材に供給される際に、特許文献１のように、外部に抜けて行くようなことがない。すなわち、光が損失する場合がない。この発明の車両用灯具は、導光部材と光供給部材とが平行もしくはほぼ平行に併設されているので、特許文献２と比較して、部品点数が少なく構造が簡単であり、その分、製造コストを安価にすることができる。   In the vehicular lamp of the present invention, since the light guide member and the light supply member are provided in parallel or substantially in parallel, when light is supplied from the light supply member to the light guide member, as in Patent Document 1 There is no such thing as going out. That is, no light is lost. In the vehicular lamp according to the present invention, since the light guide member and the light supply member are provided in parallel or substantially in parallel, the number of parts is smaller and the structure is simpler than that of Patent Document 2, and the manufacturing is accordingly performed. Cost can be reduced.

図１は、この発明にかかる車両用灯具の実施形態１を示す正面図（車両の後側から見た図）である。FIG. 1 is a front view (viewed from the rear side of the vehicle) showing Embodiment 1 of the vehicular lamp according to the present invention. 図２は、図１におけるＩＩ−ＩＩ線断面図（一部拡大断面図）である。2 is a sectional view (partially enlarged sectional view) taken along line II-II in FIG. 図３は、図１におけるＩＩＩ矢視図（平面図）である。3 is a view (plan view) taken along the arrow III in FIG. 図４は、光源と導光部材と光供給部材とを示す一部拡大正面図（図２におけるＩＶ矢視図）である。FIG. 4 is a partially enlarged front view (viewed along arrow IV in FIG. 2) showing the light source, the light guide member, and the light supply member. 図５は、光源と導光部材と光供給部材とを示す一部拡大背面図（図２におけるＶ矢視図）である。FIG. 5 is a partially enlarged rear view (viewed in the direction of arrow V in FIG. 2) showing the light source, the light guide member, and the light supply member. 図６は、導光部材と光供給部材とを示す一部拡大断面図（図４におけるＶＩ−ＶＩ線断面図）である。6 is a partially enlarged cross-sectional view (a cross-sectional view taken along the line VI-VI in FIG. 4) showing the light guide member and the light supply member. 図７は、この発明にかかる車両用灯具の実施形態２を示す光源と導光部材と光供給部材の正面図である。FIG. 7 is a front view of a light source, a light guide member, and a light supply member showing Embodiment 2 of the vehicular lamp according to the present invention. 図８は、導光部材と光供給部材とを示す一部拡大断面図（図７におけるＡ−Ａ線断面図、Ｂ−Ｂ線断面図、Ｃ−Ｃ線断面図）である。FIG. 8 is a partially enlarged cross-sectional view (a cross-sectional view taken along line AA, a cross-sectional view taken along line BB, and a cross-sectional view taken along line CC in FIG. 7) showing the light guide member and the light supply member. 図９は、この発明にかかる車両用灯具の実施形態３を示す導光部材と光供給部材の一部拡大断面図（図７におけるＡ−Ａ線断面図、Ｂ−Ｂ線断面図、Ｃ−Ｃ線断面図）である。9 is a partially enlarged cross-sectional view of a light guide member and a light supply member showing a third embodiment of a vehicular lamp according to the present invention (a cross-sectional view taken along line AA, a cross-sectional view taken along line BB in FIG. 7, C- C line sectional view). 図１０は、この発明にかかる車両用灯具の実施形態４を示す導光部材と光供給部材の一部拡大断面図（図７におけるＡ−Ａ線断面図、Ｂ−Ｂ線断面図、Ｃ−Ｃ線断面図）である。10 is a partially enlarged cross-sectional view of a light guide member and a light supply member showing Embodiment 4 of a vehicle lamp according to the present invention (cross-sectional view taken along line AA, cross-sectional view taken along line BB in FIG. 7, C- C line sectional view). 図１１は、この発明にかかる車両用灯具の実施形態５を示す導光部材と光供給部材の一部拡大断面図である。FIG. 11 is a partially enlarged cross-sectional view of a light guide member and a light supply member, showing Embodiment 5 of a vehicle lamp according to the present invention. 図１２は、この発明にかかる車両用灯具の実施形態６を示す導光部材と光供給部材の一部拡大断面図である。FIG. 12 is a partially enlarged cross-sectional view of a light guide member and a light supply member showing Embodiment 6 of a vehicle lamp according to the present invention.

以下、この発明にかかる車両用灯具の実施形態（実施例）のうちの６例を図面に基づいて詳細に説明する。なお、この実施形態によりこの発明が限定されるものではない。   Hereinafter, six examples of embodiments (examples) of the vehicular lamp according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment.

（実施形態１の構成の説明）
図１〜図６は、この発明にかかる車両用灯具の実施形態１を示す。以下、この実施形態１にかかる車両用灯具の構成について説明する。図１〜図３中、符号１は、この実施形態１にかかる車両用灯具である。符号１００は、前記車両用灯具１の近くに隣接して設けられている隣接車両用灯具である。 (Description of Configuration of Embodiment 1)
1 to 6 show Embodiment 1 of a vehicular lamp according to the present invention. Hereinafter, the configuration of the vehicular lamp according to the first embodiment will be described. 1 to 3, reference numeral 1 denotes a vehicular lamp according to the first embodiment. Reference numeral 100 denotes an adjacent vehicle lamp provided adjacent to the vehicle lamp 1.

前記車両用灯具１と前記隣接車両用灯具１００とは、リアコンビネーションランプを構成し、車両（図示せず）の後部の左右両側にそれぞれ装備される。図示の前記車両用灯具１と前記隣接車両用灯具１００とは、車両の後部の右側に装備される。以下、右側の前記車両用灯具１と前記隣接車両用灯具１００とについて説明する。なお、車両の後部の左側に装備される車両用灯具および隣接車両用灯具は、前記車両用灯具１および前記隣接車両用灯具１００と左右逆となるので、説明を省略する。   The vehicular lamp 1 and the adjacent vehicular lamp 100 constitute a rear combination lamp and are respectively provided on the left and right sides of the rear portion of the vehicle (not shown). The illustrated vehicular lamp 1 and the adjacent vehicular lamp 100 are mounted on the right side of the rear portion of the vehicle. Hereinafter, the right vehicle lamp 1 and the adjacent vehicle lamp 100 will be described. Note that the vehicular lamp and the adjacent vehicle lamp mounted on the left side of the rear part of the vehicle are opposite to the vehicular lamp 1 and the adjacent vehicular lamp 100, and thus description thereof is omitted.

車両の後部の平面形状（平面（車両の上側）から見た形状）は、車両の内側（図示の場合左側）から車両の外側（図示の場合右側）にかけて、車両の後側から前側に、湾曲傾斜（スラント）している。このために、前記車両用灯具１と前記隣接車両用灯具１００との平面形状は、図３に示すように、車両の後部の平面形状に倣って湾曲傾斜（スラント）している。   The planar shape of the rear part of the vehicle (the shape seen from the plane (upper side of the vehicle)) is curved from the rear side of the vehicle to the front side from the inner side (left side in the figure) to the outer side (right side in the figure). It is slanted. Therefore, the planar shapes of the vehicle lamp 1 and the adjacent vehicle lamp 100 are curved and slanted (slant) following the planar shape of the rear part of the vehicle, as shown in FIG.

（車両用灯具１の説明）
前記車両用灯具１は、図１、図２に示すように、ランプハウジング２と、ランプレンズ（たとえば、素通しのアウターカバー、アウターレンズなど）３と、光源４と、導光部材５と、光供給部材６と、を備えるものである。前記車両用灯具１は、この例では、車両のバックフェンダに装備されている。すなわち、前記車両用灯具１は、固定側の灯具である。 (Description of vehicle lamp 1)
As shown in FIGS. 1 and 2, the vehicular lamp 1 includes a lamp housing 2, a lamp lens (for example, a transparent outer cover, an outer lens, etc.) 3, a light source 4, a light guide member 5, and a light. And a supply member 6. In this example, the vehicular lamp 1 is mounted on a back fender of a vehicle. That is, the vehicle lamp 1 is a fixed-side lamp.

前記ランプハウジング２は、たとえば、光不透過性の部材、たとえば、樹脂部材から構成されている。前記ランプハウジング２は、一方（後方）が開口し、他方（前方）が閉塞されている中空形状をなす。前記ランプレンズ３は、たとえば、光透過性の部材、たとえば、透明樹脂部材やガラス部材から構成されている。前記ランプレンズ３は、一方（前方）が開口し、他方（後方）が閉塞されている中空形状をなす。前記ランプレンズ３の平面形状は、車両の後部の平面形状に沿って、車両の内側から車両の外側にかけて、車両の後側から前側に、湾曲傾斜（スラント）している。前記ランプレンズ３の開口部の周縁部と前記ランプハウジング２の開口部の周縁部とは、水密に固定されている。前記ランプハウジング２および前記ランプレンズ３により、灯室７が区画されている。   The lamp housing 2 is made of, for example, a light impermeable member, for example, a resin member. The lamp housing 2 has a hollow shape in which one (rear) is open and the other (front) is closed. The lamp lens 3 is made of, for example, a light transmissive member, such as a transparent resin member or a glass member. The lamp lens 3 has a hollow shape in which one (front) is open and the other (rear) is closed. The planar shape of the lamp lens 3 is slanted along the planar shape of the rear part of the vehicle from the inner side of the vehicle to the outer side of the vehicle and from the rear side to the front side of the vehicle. The peripheral edge of the opening of the lamp lens 3 and the peripheral edge of the opening of the lamp housing 2 are fixed in a watertight manner. A lamp chamber 7 is defined by the lamp housing 2 and the lamp lens 3.

前記灯室７内には、前記光源４および前記導光部材５および前記光供給部材６が配置されている。前記光源４および前記導光部材５および前記光供給部材６は、この例では、テールランプを構成する。なお、前記灯室７内には、前記光源４および前記導光部材５および前記光供給部材６のテールランプ以外に、ストップランプ、バックアップランプ、ターンシグナルランプ、クリアランスランプ、ライセンスプレートランプなど、あるいは、インナーハウジング、インナーレンズなどを配置しても良い。   In the lamp chamber 7, the light source 4, the light guide member 5, and the light supply member 6 are arranged. The light source 4, the light guide member 5, and the light supply member 6 constitute a tail lamp in this example. In the lamp chamber 7, in addition to the light source 4, the light guide member 5, and the light supply member 6, the stop lamp, the backup lamp, the turn signal lamp, the clearance lamp, the license plate lamp, etc. An inner housing, an inner lens, or the like may be disposed.

（光源４の説明）
前記光源４は、図１、図４、図５に示すように、この例では、たとえば、ＬＥＤ、ＯＥＬまたはＯＬＥＤ（有機ＥＬ）などの自発光半導体型光源である。前記光源４は、発光部８と、基板９と、から構成されている。前記発光部８は、光（図４〜図６中の実線矢印を参照）を放射する。前記光源４は、前記灯室７内の車両の内側の端に配置されている。前記光源４は、前記ランプハウジング２に直接もしくは他の部材（図示せず）を介して取り付けられている。 (Description of light source 4)
As shown in FIGS. 1, 4, and 5, the light source 4 is a self-luminous semiconductor light source such as an LED, an OEL, or an OLED (organic EL) in this example. The light source 4 includes a light emitting unit 8 and a substrate 9. The light emitting unit 8 emits light (see solid arrows in FIGS. 4 to 6). The light source 4 is disposed at the inner end of the vehicle in the lamp chamber 7. The light source 4 is attached to the lamp housing 2 directly or via another member (not shown).

（導光部材５の説明）
前記導光部材５は、内部での全反射を利用して光を導くものである。前記導光部材５は、この例では、アクリル樹脂やＰＣ（ポリカーボネート）などの透明樹脂材から構成されている。前記導光部材５は、図１、図２、図４〜図６に示すように、一端から他端にかけて同等もしくはほぼ同等の断面円形の円柱形状すなわち丸棒形状をなす。 (Description of the light guide member 5)
The light guide member 5 guides light by utilizing total internal reflection. In this example, the light guide member 5 is made of a transparent resin material such as acrylic resin or PC (polycarbonate). As shown in FIGS. 1, 2, and 4 to 6, the light guide member 5 has a circular column shape with a circular section that is equivalent or substantially equivalent from one end to the other end.

前記導光部材５の平面形状は、図２中の一部に示すように、前記車両用灯具１の平面形状および車両の後部の平面形状に倣って湾曲傾斜（スラント）している。前記導光部材５の正面形状（正面（車両の後側）から見た形状）は、図１に示すように、車両の内側が開口した横Ｕ字形状をなす。前記導光部材５は、前記ランプハウジング２に直接もしくは他の部材（図示せず）を介して取り付けられている。たとえば、前記導光部材５に一体に設けられている取付片（図示せず）が前記ランプハウジング２に直接もしくは他の部材（図示せず）を介して取り付けられている。   As shown in a part of FIG. 2, the planar shape of the light guide member 5 is curved and slanted (slant) following the planar shape of the vehicular lamp 1 and the planar shape of the rear part of the vehicle. As shown in FIG. 1, the front shape of the light guide member 5 (the shape seen from the front (rear side of the vehicle)) is a horizontal U shape in which the inside of the vehicle is opened. The light guide member 5 is attached to the lamp housing 2 directly or via another member (not shown). For example, an attachment piece (not shown) provided integrally with the light guide member 5 is attached to the lamp housing 2 directly or via another member (not shown).

前記導光部材５は、供給部１０と、出射面１１と、反射面１２と、を有する。前記供給部１０は、前記導光部材５の一側面に設けられている。前記出射面１１は、前記導光部材５の前記供給部１０と別の一側面であって、前記ランプレンズ３に対向する一側面に設けられている。前記反射面１２は、前記導光部材５の前記供給部１０および前記出射面１１と別の一側面に設けられている。前記出射面１１と前記反射面１２とは、対向していて、前記供給部１０の両隣に位置する。   The light guide member 5 includes a supply unit 10, an emission surface 11, and a reflection surface 12. The supply unit 10 is provided on one side surface of the light guide member 5. The emission surface 11 is provided on one side surface that is different from the supply unit 10 of the light guide member 5 and faces the lamp lens 3. The reflection surface 12 is provided on one side surface different from the supply unit 10 and the emission surface 11 of the light guide member 5. The emission surface 11 and the reflection surface 12 are opposed to each other and are located on both sides of the supply unit 10.

前記供給部１０は、前記光供給部材６から供給される光を前記導光部材５中に通す（通過させる）ものである。前記出射面１１は、前記供給部１０から前記導光部材５中に入射した光を外部に出射させるものである。前記反射面１２は、前記供給部１０から前記導光部材５中に通した入射光を前記出射面１１側に反射させるものである。前記反射面１２は、導光方向すなわち断面円形の円柱形状をなす前記導光部材５の中心線（中心軸線）方向に多数個連続して設けられている。前記反射面１２は、平面もしくは曲面などから構成されている。前記反射面１２は、隣り合う面で１個のプリズムを形成する。   The supply unit 10 allows light supplied from the light supply member 6 to pass through the light guide member 5. The exit surface 11 is for emitting light incident on the light guide member 5 from the supply unit 10 to the outside. The reflection surface 12 reflects incident light that has passed through the light guide member 5 from the supply unit 10 toward the emission surface 11. A large number of the reflecting surfaces 12 are continuously provided in the light guide direction, that is, in the direction of the center line (center axis) of the light guide member 5 having a cylindrical shape with a circular cross section. The reflection surface 12 is constituted by a flat surface or a curved surface. The reflection surface 12 forms one prism on adjacent surfaces.

（光供給部材６の説明）
前記光供給部材６は、前記導光部材５と同様に、内部での全反射を利用して光を導くものである。前記光供給部材６は、前記導光部材５と同様に、この例では、アクリル樹脂やＰＣ（ポリカーボネート）などの透明樹脂材から構成されている。前記光供給部材６は、図１、図４〜図６に示すように、一端から他端にかけて同等もしくはほぼ同等の断面縦長の長方形（図６（Ａ）参照）あるいは断面台形（図６（Ｂ）参照）の板形状もしくは棒形状をなす。 (Description of the light supply member 6)
Similar to the light guide member 5, the light supply member 6 guides light using total internal reflection. In this example, the light supply member 6 is made of a transparent resin material such as acrylic resin or PC (polycarbonate), like the light guide member 5. As shown in FIGS. 1 and 4 to 6, the light supply member 6 has the same or almost the same longitudinally long rectangular shape (see FIG. 6A) or trapezoidal cross section (FIG. 6B) from one end to the other end. ))).

前記光供給部材６の平面形状は、前記導光部材５の平面形状と同様に、図２中の一部に示すように、前記車両用灯具１の平面形状および車両の後部の平面形状に倣って湾曲傾斜（スラント）している。前記光供給部材６の正面形状（正面（車両の後側）から見た形状）は、前記導光部材５の正面形状と同様に、図１に示すように、車両の内側が開口した横Ｕ字形状をなす。前記光供給部材６は、前記導光部材５と共に、前記ランプハウジング２に直接もしくは他の部材（図示せず）を介して取り付けられている。たとえば、前記光供給部材６に一体に設けられている取付片（図示せず）が前記ランプハウジング２に直接もしくは他の部材（図示せず）を介して取り付けられている。   Similar to the planar shape of the light guide member 5, the planar shape of the light supply member 6 follows the planar shape of the vehicular lamp 1 and the planar shape of the rear part of the vehicle, as shown in part of FIG. Is slanted. The front shape of the light supply member 6 (the shape seen from the front (rear side of the vehicle)) is the same as the front shape of the light guide member 5, as shown in FIG. Form a letter shape. The light supply member 6 is attached to the lamp housing 2 together with the light guide member 5 directly or via another member (not shown). For example, an attachment piece (not shown) provided integrally with the light supply member 6 is attached to the lamp housing 2 directly or via another member (not shown).

前記光供給部材６は、入射面１３と、供給部１４と、を有する。前記入射面１３は、前記光供給部材６の一端面に設けられている。前記供給部１４は、前記光供給部材６の一側面に設けられている。   The light supply member 6 includes an incident surface 13 and a supply unit 14. The incident surface 13 is provided on one end surface of the light supply member 6. The supply unit 14 is provided on one side surface of the light supply member 6.

前記入射面１３は、前記光源４の前記発光部８に対向する。前記入射面１３は、平面もしくは曲面もしくは平面および曲面の組み合わせからなる。前記入射面１３は、前記発光部８から放射される光を前記光供給部材６中に入射させるものである。前記供給部１４は、前記入射面１３から前記光供給部材６中に入射した光を前記導光部材５の前記供給部１０に供給するものである。   The incident surface 13 faces the light emitting unit 8 of the light source 4. The entrance surface 13 is a flat surface, a curved surface, or a combination of a flat surface and a curved surface. The incident surface 13 allows light emitted from the light emitting unit 8 to enter the light supply member 6. The supply unit 14 supplies light that has entered the light supply member 6 from the incident surface 13 to the supply unit 10 of the light guide member 5.

（導光部材５と光供給部材６との説明）
前記導光部材５と前記光供給部材６とは、平行もしくはほぼ平行に併設されている。前記導光部材５と前記光供給部材６とは、前記導光部材５の前記供給部１０および前記光供給部材６の前記供給部１４において、接合されていて一体となっている構造である。 (Description of the light guide member 5 and the light supply member 6)
The light guide member 5 and the light supply member 6 are provided in parallel or substantially in parallel. The light guide member 5 and the light supply member 6 are joined and integrated in the supply portion 10 of the light guide member 5 and the supply portion 14 of the light supply member 6.

前記導光部材５および前記光供給部材６の両端は、前記光源４と共に、前記灯室７内の車両の内側の端に配置されている。前記導光部材５の一端１５は、前記光供給部材６の一端（前記入射面１３側の端）よりも、前記ランプハウジング２に近接している。なお、前記導光部材５の前記一端１５は、前記ランプレンズ３に、あるいは、前記ランプハウジング２および前記ランプレンズ３に近接していても良い。なお、前記導光部材５の他端を、前記一端１５と同様に、前記ランプハウジング２もしくは前記ランプレンズ３のうち少なくともいずれか一方に近接させても良い。   Both ends of the light guide member 5 and the light supply member 6 are arranged at the inner end of the vehicle in the lamp chamber 7 together with the light source 4. One end 15 of the light guide member 5 is closer to the lamp housing 2 than one end (end on the incident surface 13 side) of the light supply member 6. The one end 15 of the light guide member 5 may be close to the lamp lens 3 or close to the lamp housing 2 and the lamp lens 3. The other end of the light guide member 5 may be brought close to at least one of the lamp housing 2 and the lamp lens 3 in the same manner as the one end 15.

（隣接車両用灯具１００の説明）
前記隣接車両用灯具１００は、図１〜図３に示すように、ランプハウジング１０２と、ランプレンズ（たとえば、素通しのアウターカバー、アウターレンズなど）１０３と、光源（図示せず）と、導光部材１０５と、を備えるものである。前記隣接車両用灯具１００は、この例では、車両のバックドアに装備されている。すなわち、前記隣接車両用灯具１００は、可動側の灯具である。 (Description of adjacent vehicle lamp 100)
As shown in FIGS. 1 to 3, the adjacent vehicle lamp 100 includes a lamp housing 102, a lamp lens (for example, a transparent outer cover, an outer lens, etc.) 103, a light source (not shown), a light guide, and the like. The member 105 is provided. In this example, the adjacent vehicle lamp 100 is mounted on the back door of the vehicle. That is, the adjacent vehicle lamp 100 is a movable lamp.

前記ランプハウジング１０２は、たとえば、光不透過性の部材、たとえば、樹脂部材から構成されている。前記ランプハウジング１０２は、一方（後方）が開口し、他方（前方）が閉塞されている中空形状をなす。前記ランプレンズ１０３は、たとえば、光透過性の部材、たとえば、透明樹脂部材やガラス部材から構成されている。前記ランプレンズ１０３は、一方（前方）が開口し、他方（後方）が閉塞されている中空形状をなす。前記ランプレンズ１０３の開口部の周縁部と前記ランプハウジング１０２の開口部の周縁部とは、水密に固定されている。前記ランプハウジング１０２および前記ランプレンズ１０３により、灯室１０７が区画されている。   The lamp housing 102 is made of, for example, a light impermeable member, for example, a resin member. The lamp housing 102 has a hollow shape in which one (rear) is open and the other (front) is closed. The lamp lens 103 is made of, for example, a light transmissive member such as a transparent resin member or a glass member. The lamp lens 103 has a hollow shape in which one (front) is open and the other (rear) is closed. The periphery of the opening of the lamp lens 103 and the periphery of the opening of the lamp housing 102 are fixed in a watertight manner. A lamp chamber 107 is defined by the lamp housing 102 and the lamp lens 103.

前記灯室１０７内には、前記光源および前記導光部材１０５が配置されている。前記光源および前記導光部材１０５は、この例では、テールランプを構成する。なお、前記灯室１０７内には、前記光源および前記導光部材１０５のテールランプ以外に、ストップランプ、バックアップランプ、ターンシグナルランプ、クリアランスランプ、ライセンスプレートランプなど、あるいは、インナーハウジング、インナーレンズなどを配置しても良い。   The light source and the light guide member 105 are disposed in the lamp chamber 107. In this example, the light source and the light guide member 105 constitute a tail lamp. In the lamp chamber 107, in addition to the light source and the tail lamp of the light guide member 105, a stop lamp, a backup lamp, a turn signal lamp, a clearance lamp, a license plate lamp, etc., an inner housing, an inner lens, etc. It may be arranged.

前記光源は、前記車両用灯具１の前記光源２と同様に、ＬＥＤ、ＯＥＬまたはＯＬＥＤ（有機ＥＬ）などの自発光半導体型光源である。前記光源は、発光部（図示せず）と、基板（図示せず）と、から構成されている。前記光源は、前記灯室１０７内の車両の外側の端に配置されている。前記光源は、前記ランプハウジング１０２に直接もしくは他の部材（図示せず）を介して取り付けられている。   Similar to the light source 2 of the vehicular lamp 1, the light source is a self-luminous semiconductor type light source such as an LED, OEL, or OLED (organic EL). The light source includes a light emitting unit (not shown) and a substrate (not shown). The light source is disposed at an outer end of the vehicle in the lamp chamber 107. The light source is attached to the lamp housing 102 directly or via another member (not shown).

前記導光部材１０５は、内部での全反射を利用して光を導くものである。前記導光部材１０５は、この例では、アクリル樹脂やＰＣ（ポリカーボネート）などの透明樹脂材から構成されている。前記導光部材１０５は、一端から他端にかけて同等もしくはほぼ同等の断面円形の円柱形状すなわち丸棒形状をなす。   The light guide member 105 guides light by utilizing total internal reflection. In this example, the light guide member 105 is made of a transparent resin material such as acrylic resin or PC (polycarbonate). The light guide member 105 has an equivalent or substantially equivalent circular cylindrical shape, that is, a round bar shape, from one end to the other end.

前記導光部材１０５の平面形状は、図２中の一部に示すように、前記隣接車両用灯具１００の平面形状および車両の後部の平面形状に倣って湾曲傾斜（スラント）している。前記導光部材１０５の正面形状（正面（車両の後側）から見た形状）は、図１に示すように、車両の外側が開口した横Ｕ字形状をなす。前記導光部材１０５は、前記ランプハウジング１０２に直接もしくは他の部材（図示せず）を介して取り付けられている。たとえば、前記導光部材１０５に一体に設けられている取付片（図示せず）が前記ランプハウジング１０２に直接もしくは他の部材（図示せず）を介して取り付けられている。   As shown in a part of FIG. 2, the planar shape of the light guide member 105 is curved and slanted following the planar shape of the adjacent vehicle lamp 100 and the planar shape of the rear part of the vehicle. As shown in FIG. 1, the front shape of the light guide member 105 (the shape seen from the front (the rear side of the vehicle)) is a horizontal U shape with the outside of the vehicle opened. The light guide member 105 is attached to the lamp housing 102 directly or via another member (not shown). For example, an attachment piece (not shown) provided integrally with the light guide member 105 is attached to the lamp housing 102 directly or via another member (not shown).

前記導光部材１０５は、一端面の入射面（図示せず）と、一側面（正面すなわち前記ランプレンズ１０３と対向する面）の出射面１１１と、前記出射面１１１と反対側の一側面（背面すなわち前記ランプレンズ１０３と対向する面と反対側の面）の反射面１１２と、を有する。前記入射面は、前記光源の前記発光部に対向する。前記入射面は、平面もしくは曲面もしくは平面および曲面の組み合わせからなる。前記入射面は、前記発光部から放射される光を前記導光部材１０５中に入射させるものである。   The light guide member 105 includes an incident surface (not shown) on one end surface, an emission surface 111 on one side surface (a front surface, ie, a surface facing the lamp lens 103), and one side surface on the opposite side to the emission surface 111 ( A reflecting surface 112 on the back surface, that is, the surface opposite to the surface facing the lamp lens 103. The incident surface faces the light emitting part of the light source. The entrance surface is a flat surface, a curved surface, or a combination of a flat surface and a curved surface. The incident surface allows light emitted from the light emitting unit to enter the light guide member 105.

前記出射面１１１は、前記入射面から前記導光部材１０５中に入射した光（入射光）であって、前記導光部材１０５中を導かれた光を出射光として前記導光部材１０５中から外部に出射させるものである。   The exit surface 111 is light (incident light) incident on the light guide member 105 from the entrance surface, and the light guided through the light guide member 105 is emitted from the light guide member 105 as output light. The light is emitted to the outside.

前記反射面１１２は、前記入射面から前記導光部材１０５中に入射した入射光を前記出射面１１１側に反射させるものである。前記反射面１１２は、導光方向すなわち断面円形の円柱形状をなす前記導光部材１０５の中心線（中心軸線）方向に多数個連続して設けられている。前記反射面１１２は、平面もしくは曲面などから構成されている。前記反射面１１２は、隣り合う面で１個のプリズムを形成する。   The reflection surface 112 reflects incident light incident on the light guide member 105 from the incident surface toward the emission surface 111 side. A large number of the reflecting surfaces 112 are continuously provided in the light guide direction, that is, in the direction of the center line (center axis) of the light guide member 105 having a circular cylindrical shape. The reflection surface 112 is constituted by a flat surface or a curved surface. The reflection surface 112 forms one prism on adjacent surfaces.

前記導光部材１０５の前記入射面側の一端１１５は、前記光源と共に、前記灯室１０７内の車両の外側の端に配置されていて、前記ランプハウジング１０２に近接している。なお、前記導光部材１０５の前記一端１１５は、前記ランプレンズ１０３に、あるいは、前記ランプハウジング１０２および前記ランプレンズ１０３に近接していても良い。また、前記導光部材１０５の他端を、前記一端１１５と同様に、前記ランプハウジング１０２もしくは前記ランプレンズ１０３のうち少なくともいずれか一方に近接させても良い。   One end 115 on the incident surface side of the light guide member 105 is disposed at the outer end of the vehicle in the lamp chamber 107 together with the light source, and is close to the lamp housing 102. The one end 115 of the light guide member 105 may be close to the lamp lens 103 or close to the lamp housing 102 and the lamp lens 103. Further, the other end of the light guide member 105 may be brought close to at least one of the lamp housing 102 and the lamp lens 103 in the same manner as the one end 115.

この結果、図１、図２に示すように、前記車両用灯具１の前記導光部材５の前記一端１５（もしくは両端）と、前記隣接車両用灯具１００の前記導光部材１０５の前記一端１１５（もしくは両端）とは、近接している。これにより、前記車両用灯具１の前記導光部材５と、前記隣接車両用灯具１００の前記導光部材１０５とは、一体感をなす。なお、前記隣接車両用灯具１００の前記導光部材１０５を、前記車両用灯具１の前記導光部材５と前記光供給部材６との一体構造のものとしても良い。   As a result, as shown in FIGS. 1 and 2, the one end 15 (or both ends) of the light guide member 5 of the vehicular lamp 1 and the one end 115 of the light guide member 105 of the adjacent vehicular lamp 100. (Or both ends) are close to each other. Thereby, the said light guide member 5 of the said vehicle lamp 1 and the said light guide member 105 of the said adjacent vehicle lamp 100 make a sense of unity. The light guide member 105 of the adjacent vehicle lamp 100 may have an integrated structure of the light guide member 5 and the light supply member 6 of the vehicle lamp 1.

（実施形態１の作用の説明）
この実施形態１にかかる車両用灯具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。 (Description of the operation of the first embodiment)
The vehicular lamp 1 according to the first embodiment is configured as described above, and the operation thereof will be described below.

光源４の発光部８を点灯する。すると、発光部８から放射された光（図４〜図６中の実線矢印を参照）は、光供給部材６の入射面１３から光供給部材６中に入射する。光供給部材６中に入射した入射光は、光供給部材６中を、一端の入射面１３から他端面側に、全反射を繰り返しながら導かれながら、光供給部材６の供給部１４から導光部材５の供給部１０に供給される。   The light emitting unit 8 of the light source 4 is turned on. Then, the light radiated from the light emitting unit 8 (see solid line arrows in FIGS. 4 to 6) enters the light supply member 6 from the incident surface 13 of the light supply member 6. Incident light that has entered the light supply member 6 is guided from the supply unit 14 of the light supply member 6 while being repeatedly guided through the light supply member 6 from the incident surface 13 at one end to the other end surface side. It is supplied to the supply unit 10 of the member 5.

光供給部材６の供給部１４から導光部材５の供給部１０に供給された光は、導光部材５の供給部１０を通って導光部材５中に入る。導光部材５中に入った光は、反射面１２で出射面１１側に反射する。反射面１２で反射した反射光は、出射面１１から外部に出射する。出射面１１から外部に出射した光は、ランプレンズ３を経て外部に所定の配光パターンで照射される。なお、導光部材５中に入った光であって、反射面１２で反射しなかった光は、導光部材５中を、一端１５側から他端側に、全反射を繰り返しながら導かれる。   The light supplied from the supply unit 14 of the light supply member 6 to the supply unit 10 of the light guide member 5 enters the light guide member 5 through the supply unit 10 of the light guide member 5. The light that has entered the light guide member 5 is reflected by the reflection surface 12 toward the emission surface 11. The reflected light reflected by the reflecting surface 12 is emitted from the emitting surface 11 to the outside. The light emitted from the emission surface 11 to the outside is irradiated to the outside through the lamp lens 3 with a predetermined light distribution pattern. The light that has entered the light guide member 5 and has not been reflected by the reflecting surface 12 is guided through the light guide member 5 from one end 15 side to the other end side while repeating total reflection.

車両用灯具１の光源４の点灯と同時に、隣接車両用灯具１００の光源が点灯されていて、光源から放射された光は、導光部材１０５の一端１１５の入射面から導光部材１０５中に入射する。導光部材１０５中に入射した入射光は、導光部材１０５中を、一端１１５側から他端側に、全反射を繰り返しながら導かれる。導光部材１０５中を導かれた光は、反射面１１２で出射面１１１側に反射する。反射面１１２で反射した反射光は、出射面１１１から外部に出射する。出射面１１１から外部に出射した光は、ランプレンズ１０３を経て外部に所定の配光パターンで照射される。   Simultaneously with the lighting of the light source 4 of the vehicular lamp 1, the light source of the adjacent vehicular lamp 100 is turned on, and the light emitted from the light source enters the light guide member 105 from the incident surface of the one end 115 of the light guide member 105. Incident. Incident light entering the light guide member 105 is guided through the light guide member 105 from one end 115 side to the other end side while repeating total reflection. The light guided through the light guide member 105 is reflected by the reflection surface 112 toward the emission surface 111. The reflected light reflected by the reflection surface 112 is emitted from the emission surface 111 to the outside. The light emitted to the outside from the emission surface 111 is irradiated to the outside with a predetermined light distribution pattern through the lamp lens 103.

ここで、車両の後側からあるいは車両の後側側方から見ると、図１中の太い実線に示すように、車両の内側が開口した横Ｕ字形状をなす車両用灯具１の導光部材５が光って見える。一方、車両の外側が開口した横Ｕ字形状をなす隣接車両用灯具１００の導光部材１０５が光って見える。そして、車両用灯具１の導光部材５の開口端（両端）と、隣接車両用灯具１００の導光部材１０５の開口端（両端）とが近接していることにより、車両用灯具１の導光部材５と、隣接車両用灯具１００の導光部材１０５とが一体感をなす。すなわち、車両用灯具１の導光部材５と、隣接車両用灯具１００の導光部材１０５とが、図１中の太い実線に示すように、一体の環状（リング状）に光って見える。   Here, when viewed from the rear side of the vehicle or from the rear side of the vehicle, as shown by a thick solid line in FIG. 1, the light guide member of the vehicular lamp 1 having a lateral U shape with the inside of the vehicle opened. 5 looks shining. On the other hand, the light guide member 105 of the adjacent vehicle lamp 100 having a horizontal U shape with the outside of the vehicle opened appears to shine. The opening end (both ends) of the light guide member 5 of the vehicular lamp 1 and the opening end (both ends) of the light guide member 105 of the adjacent vehicular lamp 100 are close to each other. The optical member 5 and the light guide member 105 of the adjacent vehicle lamp 100 make a sense of unity. That is, the light guide member 5 of the vehicular lamp 1 and the light guide member 105 of the adjacent vehicular lamp 100 appear to shine in an integral annular shape (ring shape) as shown by a thick solid line in FIG.

（実施形態１の効果の説明）
この実施形態１にかかる車両用灯具１は、以上のごとき構成および作用からなり、以下、その効果について説明する。 (Description of the effect of Embodiment 1)
The vehicular lamp 1 according to the first embodiment is configured and operated as described above, and the effects thereof will be described below.

この実施形態１にかかる車両用灯具１は、導光部材５と光供給部材６とが平行もしくはほぼ平行に併設されているので、光源４からの光が光供給部材６から導光部材５に供給される際に、特許文献１のように、外部に抜けて行くようなことがない。すなわち、光が損失する場合がない。特に、導光部材５に曲部が有る場合、すなわち、この実施形態１のように、導光部材５の正面形状がＵ字形状をなす場合において、導光部材５の曲部に光を斜めに供給すると、光が導光部材５に均一に供給されず、かつ、光が導光部材５から抜けたりすることがある。これに対して、この実施形態１のように、導光部材５の曲部に光供給部材６の曲部を平行もしくはほぼ平行に沿わせることにより、光供給部材６の曲部から光が導光部材５の曲部に沿って均一に供給され、かつ、光が導光部材５から抜けることが少なくなる。   In the vehicular lamp 1 according to the first embodiment, since the light guide member 5 and the light supply member 6 are provided in parallel or substantially in parallel, the light from the light source 4 is transferred from the light supply member 6 to the light guide member 5. When supplied, there is no such thing as going out outside as in Patent Document 1. That is, no light is lost. In particular, when the light guide member 5 has a curved portion, that is, when the front shape of the light guide member 5 is U-shaped as in the first embodiment, light is obliquely applied to the curved portion of the light guide member 5. If the light is supplied to the light guide member 5, the light may not be supplied uniformly to the light guide member 5, and the light may escape from the light guide member 5. On the other hand, light is guided from the curved portion of the light supply member 6 by causing the curved portion of the light supply member 6 to be parallel or substantially parallel to the curved portion of the light guide member 5 as in the first embodiment. The light is uniformly supplied along the curved portion of the optical member 5, and light is less likely to escape from the light guide member 5.

この実施形態１にかかる車両用灯具１は、導光部材５と光供給部材６とが平行もしくはほぼ平行に併設されているので、特許文献２と比較して、部品点数が少なく構造が簡単であり、その分、製造コストを安価にすることができる。   In the vehicular lamp 1 according to the first embodiment, the light guide member 5 and the light supply member 6 are provided in parallel or substantially parallel to each other, so that the number of parts is small and the structure is simple compared to Patent Document 2. Yes, the manufacturing cost can be reduced accordingly.

この実施形態１にかかる車両用灯具１は、導光部材５および光供給部材６の両端は、灯室７内の車両の内側の端にそれぞれ配置されていて、導光部材５の一端１５が、光供給部材６の入射面１３側の一端よりも、ランプハウジング２もしくはランプレンズ３のうち少なくともいずれか一方に近接している。このために、図２に示すように、車両用灯具１の導光部材５の一端１５と隣接車両用灯具１００の導光部材１０５の一端１１５とがさらに近接することとなる。この結果、車両用灯具１の導光部材５と隣接車両用灯具１００の導光部材１０５とがさらに一体感をなすこととなる。   In the vehicular lamp 1 according to the first embodiment, both ends of the light guide member 5 and the light supply member 6 are respectively disposed at the inner ends of the vehicle in the lamp chamber 7, and one end 15 of the light guide member 5 is provided. The light supply member 6 is closer to at least one of the lamp housing 2 and the lamp lens 3 than one end on the incident surface 13 side. Therefore, as shown in FIG. 2, the one end 15 of the light guide member 5 of the vehicular lamp 1 and the one end 115 of the light guide member 105 of the adjacent vehicular lamp 100 are closer to each other. As a result, the light guide member 5 of the vehicular lamp 1 and the light guide member 105 of the adjacent vehicular lamp 100 become more integrated.

この実施形態１にかかる車両用灯具１は、導光部材５と光供給部材６とが、導光部材５の供給部１０および光供給部材６の供給部１４において、一体となっている構造である。このために、光が光供給部材６の供給部１４から供給されて導光部材５の供給部１０を通って導光部材５中に入る際に、光が損失する場合がないので、光源４からの光を光供給部材６から導光部材５に効率良く供給することができる。また、導光部材５と光供給部材６とが一体構造であるから、部品点数を軽減することができ、その分、製造コストを安価にすることができる。   The vehicular lamp 1 according to the first embodiment has a structure in which the light guide member 5 and the light supply member 6 are integrated in the supply unit 10 of the light guide member 5 and the supply unit 14 of the light supply member 6. is there. Therefore, when light is supplied from the supply unit 14 of the light supply member 6 and enters the light guide member 5 through the supply unit 10 of the light guide member 5, there is no case where light is lost. Can be efficiently supplied from the light supply member 6 to the light guide member 5. Moreover, since the light guide member 5 and the light supply member 6 have an integral structure, the number of parts can be reduced, and the manufacturing cost can be reduced accordingly.

（実施形態２の構成作用効果の説明）
図７、図８は、この発明にかかる車両用灯具の実施形態２を示す。以下、この実施形態２にかかる車両用灯具について説明する。図中、図１〜図６と同符号は、同一のものを示す。 (Description of the configuration and effect of the second embodiment)
7 and 8 show Embodiment 2 of a vehicular lamp according to the present invention. Hereinafter, the vehicular lamp according to the second embodiment will be described. In the figure, the same reference numerals as those in FIGS. 1 to 6 denote the same components.

この実施形態２にかかる車両用灯具は、導光部材５の供給部１０および光供給部材６の供給部１４に光量調整部を設けるものである。この光量調整部は、光供給部材６から導光部材５中に供給される光の量を均一もしくはほぼ均一に調整するものである。すなわち、光供給部材６から導光部材５中に供給される光の量は、光源４に近い部分において多く、逆に、光源４から遠い部分において少ない。このために、導光部材５の出射面１１から外部に出射する光の量（発光強度）は、光源４に近い部分において多く（強く）、逆に、光源４から遠い部分において少ない（弱い）。   In the vehicular lamp according to the second embodiment, a light amount adjustment unit is provided in the supply unit 10 of the light guide member 5 and the supply unit 14 of the light supply member 6. The light amount adjusting unit adjusts the amount of light supplied from the light supply member 6 into the light guide member 5 uniformly or substantially uniformly. That is, the amount of light supplied from the light supply member 6 into the light guide member 5 is large in a portion close to the light source 4, and conversely, is small in a portion far from the light source 4. For this reason, the amount (light emission intensity) of the light emitted from the light exit surface 11 of the light guide member 5 to the outside is large (strong) in the portion close to the light source 4, and conversely, is small (weak) in the portion far from the light source 4. .

この例の光量調整部は、光供給部材６の供給部１４と導光部材５の供給部１０とが一体構造となっている接合部分（１０、１４）の幅ＷＡ、ＷＢ、ＷＣを変化させたものである。すなわち、光源４に近い光供給部材６の一端側の部分の正面（導光部材５の出射面１１側の面）と背面（導光部材５の反射面１２側の面）とを、接合部分（１０、１４）側から反対部分側にかけて末広がりに傾斜させる。光源４から少し遠い光供給部材６の中央側の部分の正面と背面とを、接合部分（１０、１４）側から反対部分側にかけて平行とする。光源４から遠い光供給部材６の他端側の部分の正面と背面とを、接合部分（１０、１４）側から反対部分側にかけて末窄まりに傾斜させる。光供給部材６の反対部分の辺（接合部分（１０、１４）と対向する辺）を不変とする。   In this example, the light amount adjustment unit changes the widths WA, WB, and WC of the joint portions (10, 14) in which the supply unit 14 of the light supply member 6 and the supply unit 10 of the light guide member 5 are integrated. It is a thing. That is, the front surface (the surface on the light emission surface 11 side of the light guide member 5) and the back surface (the surface on the reflection surface 12 side of the light guide member 5) of the light supply member 6 near the light source 4 are joined to each other. Inclined to the end from the (10, 14) side to the opposite side. The front surface and the back surface of the central portion of the light supply member 6 that is a little farther from the light source 4 are parallel from the joint portion (10, 14) side to the opposite portion side. The front surface and the back surface of the portion on the other end side of the light supply member 6 far from the light source 4 are inclined toward the opposite end from the joining portion (10, 14) side to the opposite portion side. The opposite side of the light supply member 6 (the side facing the joint portion (10, 14)) is unchanged.

この結果、光源４に近い光供給部材６および導光部材５の一端側の接合部分（１０、１４）の幅ＷＡは、光源４に少し遠い光供給部材６および導光部材５の中央側の接合部分（１０、１４）の幅ＷＢ、および、光源４から遠い光供給部材６および導光部材５の他端側の接合部分（１０、１４）の幅ＷＣよりも小さい。また、光源４に少し遠い光供給部材６および導光部材５の中央側の接合部分（１０、１４）の幅ＷＢは、光源４から遠い光供給部材６および導光部材５の他端側の接合部分（１０、１４）の幅ＷＣよりも小さい。   As a result, the width WA of the joint portion (10, 14) on one end side of the light supply member 6 and the light guide member 5 close to the light source 4 is a little closer to the light source member 6 and the center side of the light guide member 5 than the light source 4. The width WB of the joint portion (10, 14) and the width WC of the joint portion (10, 14) on the other end side of the light supply member 6 and the light guide member 5 far from the light source 4 are smaller. Further, the width WB of the joint portion (10, 14) on the center side of the light supply member 6 and the light guide member 5 that is a little farther from the light source 4 is on the other end side of the light supply member 6 and the light guide member 5 far from the light source 4. It is smaller than the width WC of the joint portions (10, 14).

このために、幅ＷＡが小さい光供給部材６および導光部材５の一端側の接合部分（１０、１４）において、光供給部材６から導光部材５に供給される光の量は、少ない（図７中の１本の実線矢印を参照）。また、幅ＷＢが中間の光供給部材６および導光部材５の中央側の接合部分（１０、１４）において、光供給部材６から導光部材５に供給される光の量は、中間である（図７中の２本の実線矢印を参照）。さらに、幅ＷＣが大きい光供給部材６および導光部材５の他端側の接合部分（１０、１４）において、光供給部材６から導光部材５に供給される光の量は、多い（図７中の３本の実線矢印を参照）。   For this reason, the amount of light supplied from the light supply member 6 to the light guide member 5 is small in the joint portions (10, 14) on one end side of the light supply member 6 and the light guide member 5 having a small width WA ( (See the single solid arrow in FIG. 7). Further, the amount of light supplied from the light supply member 6 to the light guide member 5 is intermediate in the joint portion (10, 14) on the center side of the light supply member 6 and the light guide member 5 having an intermediate width WB. (See the two solid arrows in FIG. 7). Furthermore, the amount of light supplied from the light supply member 6 to the light guide member 5 is large in the joint portions (10, 14) on the other end side of the light supply member 6 and the light guide member 5 having a large width WC (see FIG. (See 3 solid arrows in 7).

この結果、図７中の出射面１１から垂直に延びる実線矢印および出射面１１と平行な破線に示すように、導光部材５の出射面１１から外部に出射する光の量（発光強度）は、光源４に近い部分から光源４から遠い部分まで、均一もしくはほぼ均一である。これにより、見栄えが向上し、かつ、設計の自由度が向上する。しかも、プリズムの反射面により光量を調整する技術と比較して、光量を確実に調整することができ、光損失が少なく、その上、光学設計が簡単であり、金型構造も簡単である。   As a result, as shown by a solid arrow extending perpendicularly from the emission surface 11 in FIG. 7 and a broken line parallel to the emission surface 11, the amount of light emitted from the emission surface 11 of the light guide member 5 (emission intensity) is From the portion close to the light source 4 to the portion far from the light source 4, it is uniform or almost uniform. Thereby, appearance improves and the freedom degree of design improves. In addition, the amount of light can be reliably adjusted as compared with the technique of adjusting the amount of light by the reflecting surface of the prism, there is little light loss, and the optical design is simple, and the mold structure is also simple.

（実施形態３の構成作用効果の説明）
図９は、この発明にかかる車両用灯具の実施形態３を示す。以下、この実施形態３にかかる車両用灯具について説明する。図中、図１〜図８と同符号は、同一のものを示す。 (Description of the configuration and effect of the third embodiment)
FIG. 9 shows Embodiment 3 of the vehicular lamp according to the present invention. Hereinafter, the vehicular lamp according to the third embodiment will be described. In the figure, the same reference numerals as those in FIGS. 1 to 8 denote the same components.

前記の実施形態２にかかる車両用灯具は、光供給部材６の正面と背面とを、光源４からの遠近により、末広がりに傾斜させ、平行とし、末窄まりに傾斜させるものである。これに対して、この実施形態３にかかる車両用灯具は、光供給部材６の背面のみを、光源４からの遠近により、末広がりに傾斜させ、平行とし、末窄まりに傾斜させるものであって、正面を垂直とするものである。   The vehicular lamp according to the second embodiment is configured such that the front and rear surfaces of the light supply member 6 are inclined in a divergent manner, parallel to each other, and inclined in a diminishing manner depending on the distance from the light source 4. On the other hand, the vehicular lamp according to the third embodiment is configured such that only the back surface of the light supply member 6 is inclined in a divergent manner in parallel with the distance from the light source 4, and is inclined in a diminishing manner. The front is vertical.

この実施形態３にかかる車両用灯具は、以上のごとき構成からなるので、前記の実施形態２にかかる車両用灯具とほぼ同様の作用効果を達成することができる。特に、光供給部材６の背面のみを、光源４からの遠近により、末広がりに傾斜させ、平行とし、末窄まりに傾斜させて、正面を垂直とするものである。このために、導光部材５の出射面１１の大きさは、一定である。すなわち、発光面の幅が一定であり、見栄えが向上する。   Since the vehicular lamp according to the third embodiment is configured as described above, it is possible to achieve substantially the same operational effects as the vehicular lamp according to the second embodiment. In particular, only the rear surface of the light supply member 6 is inclined in a divergent manner in parallel with the distance from the light source 4, is made parallel, and is inclined in a diminishing manner so that the front surface is vertical. For this reason, the size of the emission surface 11 of the light guide member 5 is constant. That is, the width of the light emitting surface is constant and the appearance is improved.

（実施形態４の構成作用効果の説明）
図１０は、この発明にかかる車両用灯具の実施形態４を示す。以下、この実施形態４にかかる車両用灯具について説明する。図中、図１〜図９と同符号は、同一のものを示す。 (Explanation of Configuration and Effect of Embodiment 4)
FIG. 10 shows Embodiment 4 of the vehicular lamp according to the present invention. Hereinafter, the vehicular lamp according to the fourth embodiment will be described. In the figure, the same reference numerals as those in FIGS. 1 to 9 denote the same components.

前記の実施形態２、３にかかる車両用灯具は、光供給部材６の正面と背面とが平面からなるものである。これに対して、この実施形態４にかかる車両用灯具は、光供給部材６の正面と背面とが曲面からなるものである。すなわち、光源４に近い光供給部材６の一端側の部分の正面と背面との曲率を大きくして（曲率半径を小さくして）、光供給部材６から導光部材５への光の供給量を少なくする。光源４に少し遠い光供給部材６の中央側の部分の正面と背面との曲率を中間として（曲率半径を中間として）、光供給部材６から導光部材５への光の供給量を中間とする。光源４から遠い光供給部材６の他端側の部分の正面と背面との曲率を小さくして（曲率半径を大きくして）、光供給部材６から導光部材５への光の供給量を多くする。なお、この実施形態４においては、光供給部材６および導光部材５の接合部分（１０、１４）の幅を一定にしても良いし、また、前記の実施形態２、３と組み合わせて、光供給部材６および導光部材５の接合部分（１０、１４）の幅を変化させても良い。   In the vehicular lamp according to the second and third embodiments, the front and back surfaces of the light supply member 6 are flat. In contrast, in the vehicular lamp according to the fourth embodiment, the front surface and the back surface of the light supply member 6 are curved. That is, the amount of light supplied from the light supply member 6 to the light guide member 5 is increased by increasing the curvature of the front and back surfaces of the one end portion of the light supply member 6 close to the light source 4 (decreasing the radius of curvature). Reduce. The curvature between the front and back of the central portion of the light supply member 6 that is a little farther from the light source 4 is set to the middle (with the curvature radius being the middle), and the amount of light supplied from the light supply member 6 to the light guide member 5 is the middle. To do. The amount of light supplied from the light supply member 6 to the light guide member 5 is reduced by reducing the curvature of the front and back surfaces of the portion on the other end side of the light supply member 6 far from the light source 4 (increasing the radius of curvature). Do more. In the fourth embodiment, the width of the joint portion (10, 14) of the light supply member 6 and the light guide member 5 may be constant, or in combination with the second and third embodiments, You may change the width | variety of the junction part (10, 14) of the supply member 6 and the light guide member 5. FIG.

この実施形態４にかかる車両用灯具は、以上のごとき構成からなるので、前記の実施形態２、３にかかる車両用灯具とほぼ同様の作用効果を達成することができる。特に、光供給部材６の正面と背面とが曲面からなるものであるから、光が光供給部材６中において拡散される。これにより、光源４からの光を光供給部材６から導光部材５に効率良く供給することができる。   Since the vehicular lamp according to the fourth embodiment is configured as described above, it is possible to achieve substantially the same operational effects as the vehicular lamp according to the second and third embodiments. In particular, since the front and back surfaces of the light supply member 6 are curved surfaces, the light is diffused in the light supply member 6. Thereby, the light from the light source 4 can be efficiently supplied from the light supply member 6 to the light guide member 5.

（実施形態５の構成作用効果の説明）
図１１は、この発明にかかる車両用灯具の実施形態５を示す。以下、この実施形態５にかかる車両用灯具について説明する。図中、図１〜図１０と同符号は、同一のものを示す。 (Explanation of Configuration and Effect of Embodiment 5)
FIG. 11 shows Embodiment 5 of the vehicular lamp according to the present invention. Hereinafter, the vehicular lamp according to the fifth embodiment will be described. In the figure, the same reference numerals as those in FIGS. 1 to 10 denote the same components.

前記の実施形態１〜４にかかる車両用灯具は、１個の光供給部材６の一側の接合部１４と１個の導光部材５の一側の接合部１０とを一体に接合してなるものである。これに対して、この実施形態５にかかる車両用灯具は、１個の光供給部材６の両側に２個の導光部材５をそれぞれ一体に接合してなるものである。   In the vehicular lamp according to the first to fourth embodiments, the joint portion 14 on one side of one light supply member 6 and the joint portion 10 on one side of one light guide member 5 are integrally joined. It will be. In contrast, the vehicular lamp according to the fifth embodiment is formed by integrally joining two light guide members 5 on both sides of one light supply member 6.

この実施形態５にかかる車両用灯具は、以上のごとき構成からなるので、前記の実施形態１〜４にかかる車両用灯具とほぼ同様の作用効果を達成することができる。特に、１個の光供給部材６の両側に２個の導光部材５がそれぞれ一体に接合されているので、１条の発光帯（１個の導光部材５の出射面１１の発光面）に対して２条の発光帯（２個の導光部材５の出射面１１の発光面）を得ることができ、見栄えが向上する。   Since the vehicular lamp according to the fifth embodiment is configured as described above, it is possible to achieve substantially the same operational effects as the vehicular lamp according to the first to fourth embodiments. In particular, since the two light guide members 5 are integrally joined to both sides of the one light supply member 6, one light emission band (the light emission surface of the light emission surface 11 of one light guide member 5). In contrast, two light emission bands (light emission surfaces of the emission surfaces 11 of the two light guide members 5) can be obtained, and the appearance is improved.

（実施形態６の構成作用効果の説明）
図１２は、この発明にかかる車両用灯具の実施形態６を示す。以下、この実施形態６にかかる車両用灯具について説明する。図中、図１〜図１１と同符号は、同一のものを示す。 (Explanation of Configuration and Effect of Embodiment 6)
FIG. 12 shows Embodiment 6 of a vehicle lamp according to the present invention. Hereinafter, the vehicular lamp according to the sixth embodiment will be described. In the figure, the same reference numerals as those in FIGS. 1 to 11 denote the same components.

前記の実施形態１〜５にかかる車両用灯具は、導光部材５と光供給部材６とが一体構造をなすものである。これに対して、この実施形態６にかかる車両用灯具は、導光部材５と光供給部材６とが別個の構造をなすものである。すなわち、光供給部材６の接合部１４を出射面とし、導光部材５の接合部１０を入射面とする。この結果、光供給部材６の出射面１４から出射した光が空間を経て導光部材５の入射面１０から導光部材５中に入射する。すなわち、光供給部材６から光が導光部材５に供給される。   In the vehicular lamp according to the first to fifth embodiments, the light guide member 5 and the light supply member 6 form an integral structure. On the other hand, in the vehicular lamp according to the sixth embodiment, the light guide member 5 and the light supply member 6 have separate structures. That is, the joint portion 14 of the light supply member 6 is used as the exit surface, and the joint portion 10 of the light guide member 5 is used as the entrance surface. As a result, the light emitted from the emission surface 14 of the light supply member 6 enters the light guide member 5 from the incident surface 10 of the light guide member 5 through the space. That is, light is supplied from the light supply member 6 to the light guide member 5.

この実施形態６にかかる車両用灯具は、以上のごとき構成からなるので、前記の実施形態１〜５にかかる車両用灯具とほぼ同様の作用効果を達成することができる。特に、導光部材５と光供給部材６とが別個の構造をなすものであるから、設計の自由度が向上される。   Since the vehicular lamp according to the sixth embodiment is configured as described above, it is possible to achieve substantially the same operational effects as the vehicular lamp according to the first to fifth embodiments. In particular, since the light guide member 5 and the light supply member 6 have separate structures, the degree of freedom in design is improved.

（実施形態１〜６以外の例の説明）
なお、前記の実施形態１〜６においては、リアコンビネーションランプのテールランプについて説明するものである。ところが、この発明においては、リアコンビネーションランプのテールランプ以外の車両用灯具に適用することができる。 (Description of examples other than Embodiments 1-6)
In the first to sixth embodiments, the tail lamp of the rear combination lamp will be described. However, the present invention can be applied to vehicle lamps other than the tail lamp of the rear combination lamp.

また、前記の実施形態１〜６においては、光源４を光供給部材６の一端面に配置したものである。ところが、この発明においては、光源４を光供給部材６の両端面に配置しても良い。この場合において、前記の実施形態２〜４の光量調整部は、光源４に近い光供給部材６の両端部分の光量を少なく調整し、光源４から遠い光供給部材６の中間部分の光量を多く調整する。   In the first to sixth embodiments, the light source 4 is disposed on one end surface of the light supply member 6. However, in the present invention, the light source 4 may be disposed on both end faces of the light supply member 6. In this case, the light quantity adjusting units of the above-described embodiments 2 to 4 adjust the light quantity at both ends of the light supply member 6 close to the light source 4 and increase the light quantity at the intermediate part of the light supply member 6 far from the light source 4. adjust.

さらに、前記の実施形態１〜６においては、隣接車両用灯具１００には導光部材１０５が設けられているものである。ところが、この発明においては、隣接車両用灯具１００の導光部材１０５に車両用灯具１の光供給部材６を併設しても良い。   Further, in the first to sixth embodiments, the light guide member 105 is provided in the adjacent vehicle lamp 100. However, in the present invention, the light supply member 6 of the vehicular lamp 1 may be provided together with the light guide member 105 of the adjacent vehicular lamp 100.

さらにまた、前記の実施形態１〜６においては、車両用灯具１の導光部材５および光供給部材６と、隣接車両用灯具１００の導光部材１０５とが横Ｕ字形状をなし、かつ、車両用灯具１の導光部材５および光供給部材６の両端と、隣接車両用灯具１００の導光部材１０５の両端とが近接するものである。ところが、この発明においては、車両用灯具１の導光部材５および光供給部材６と、隣接車両用灯具１００の導光部材１０５とが直線形状をなし、かつ、車両用灯具１の導光部材５および光供給部材６の一端と、隣接車両用灯具１００の導光部材１０５の一端とが近接するものであっても良い。   Furthermore, in the first to sixth embodiments, the light guide member 5 and the light supply member 6 of the vehicular lamp 1 and the light guide member 105 of the adjacent vehicular lamp 100 have a horizontal U shape, and Both ends of the light guide member 5 and the light supply member 6 of the vehicular lamp 1 and the both ends of the light guide member 105 of the adjacent vehicular lamp 100 are close to each other. However, in this invention, the light guide member 5 and the light supply member 6 of the vehicular lamp 1 and the light guide member 105 of the adjacent vehicular lamp 100 form a linear shape, and the light guide member of the vehicular lamp 1 5 and one end of the light supply member 6 and one end of the light guide member 105 of the adjacent vehicle lamp 100 may be close to each other.

さらにまた、前記の実施形態１〜６においては、導光部材５のうち、接合部分（１０、１４）および反射面１２の平面部分を除いた出射面１１を含む部分の断面形状が円形（円弧）形状をなすものである。ところが、この発明においては、出射面１１が多角形もしくは平面の場合もあり、出射面１１を含む部分の断面形状が円形（円弧）形状以外の形状をなす場合もある。   Furthermore, in the first to sixth embodiments, the cross-sectional shape of the light guide member 5 including the emission surface 11 excluding the joint portions (10, 14) and the planar portion of the reflection surface 12 is circular (arc). ) It has a shape. However, in the present invention, the exit surface 11 may be a polygon or a plane, and the cross-sectional shape of the portion including the exit surface 11 may be a shape other than a circular (arc) shape.

１ 車両用灯具
２ ランプハウジング
３ ランプレンズ
４ 光源
５ 導光部材
６ 光供給部材
７ 灯室
８ 発光部
９ 基板
１０ 供給部（入射面）
１１ 出射面
１２ 反射面
１３ 入射面
１４ 供給部（出射面）
１５ 一端
１００ 隣接車両用灯具
１０２ ランプハウジング
１０３ ランプレンズ
１０５ 導光部材
１０７ 灯室
１１１ 出射面
１１２ 反射面
１１５ 一端 DESCRIPTION OF SYMBOLS 1 Vehicle lamp 2 Lamp housing 3 Lamp lens 4 Light source 5 Light guide member 6 Light supply member 7 Lamp chamber 8 Light emission part 9 Substrate 10 Supply part (incident surface)
DESCRIPTION OF SYMBOLS 11 Outgoing surface 12 Reflecting surface 13 Incident surface 14 Supply part (outgoing surface)
DESCRIPTION OF SYMBOLS 15 One end 100 Adjacent vehicle lamp 102 Lamp housing 103 Lamp lens 105 Light guide member 107 Lamp chamber 111 Output surface 112 Reflective surface 115 One end

Claims (3)

灯室を区画するランプハウジングおよびランプレンズと、
前記灯室内に配置されている光源および棒形状をなす導光部材および板形状もしくは棒形状をなす光供給部材と、
を備え、
前記導光部材と前記光供給部材とは、平行もしくはほぼ平行に併設されていて、車両の上側から見た形状が湾曲傾斜しており、
前記光供給部材は、前記光源からの光を入射させる一端面の入射面と、前記入射面から入射した光を前記導光部材に供給させる一側面の供給部と、を有し、
前記導光部材は、前記供給部とは対向しない隣接した位置にあり、前記ランプレンズと対向する一側面に設けられていて、前記供給部から供給された光を出射させる出射面、を有し、
前記光源に近い前記光供給部材の一端側の部分の正面及び背面を、前記導光部材と前記光供給部材との対向部分側から反対部分側にかけて互いに末広がりに傾斜させ、
前記光源から少し遠い前記光供給部材の中央側の部分の正面及び背面を、前記導光部材と前記光供給部材との対向部分側から反対部分側にかけて互いに平行とし、
前記光源から遠い前記光供給部材の他端側の部分の正面及び背面を、前記導光部材と前記光供給部材との対向部分側から反対部分側にかけて互いに末窄まりに傾斜させることで、
前記導光部材中に供給する光の量を均一もしくはほぼ均一に調整する、
ことを特徴とする車両用灯具。 A lamp housing and a lamp lens that partition the lamp chamber;
A light source disposed in the lamp chamber, a light guide member having a rod shape, and a light supply member having a plate shape or a rod shape;
With
The light guide member and the light supply member are provided in parallel or substantially in parallel, and the shape seen from the upper side of the vehicle is curved and inclined,
The light supply member has an incident surface on one end surface on which light from the light source is incident, and a supply portion on one side surface that supplies light incident from the incident surface to the light guide member,
The light guide member is located at adjacent positions not facing the said supply unit, the provided on the lamp lens facing the one side, have a emitting surface, for emitting the supplied light from said supply unit ,
Inclining the front and back of the one end side portion of the light supply member close to the light source from the opposing portion side to the opposite portion side of the light guide member and the light supply member.
The front and rear surfaces of the central portion of the light supply member that is a little farther from the light source are parallel to each other from the opposed portion side to the opposite portion side of the light guide member and the light supply member,
By tilting the front and back surfaces of the other end side of the light supply member far from the light source from each other toward the opposite portion side of the light guide member and the light supply member, each end is narrowed.
Adjusting the amount of light supplied into the light guide member uniformly or substantially uniformly;
A vehicular lamp characterized by the above. 前記導光部材および前記光供給部材の一端もしくは両端は、前記灯室内の端側に配置されていて、前記導光部材の端は、前記光供給部材の端よりも、前記ランプハウジングもしくは前記ランプレンズのうち少なくともいずれか一方に近接している、
ことを特徴とする請求項１に記載の車両用灯具。 One end or both ends of the light guide member and the light supply member are disposed on an end side in the lamp chamber, and the end of the light guide member is located on the lamp housing or the lamp more than the end of the light supply member. Close to at least one of the lenses,
The vehicular lamp according to claim 1 . 前記導光部材と前記光供給部材とは、前記供給部において、一体となっている構造である、
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 light guide member and the light supply member have an integrated structure in the supply unit.
The vehicular lamp according to claim 1 or 2 .
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