JP2014146447A - Vehicular lighting fixture - Google Patents

Vehicular lighting fixture Download PDF

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Publication number
JP2014146447A
JP2014146447A JP2013013094A JP2013013094A JP2014146447A JP 2014146447 A JP2014146447 A JP 2014146447A JP 2013013094 A JP2013013094 A JP 2013013094A JP 2013013094 A JP2013013094 A JP 2013013094A JP 2014146447 A JP2014146447 A JP 2014146447A
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Japan
Prior art keywords
rod
shaped
circuit component
shaped portion
lamp
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JP2013013094A
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Japanese (ja)
Inventor
Hiromi Nakamura
弘美 中村
Yoshiaki Aiiso
良明 相磯
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Koito Manufacturing Co Ltd
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Koito Manufacturing Co Ltd
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Priority to JP2013013094A priority Critical patent/JP2014146447A/en
Publication of JP2014146447A publication Critical patent/JP2014146447A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/15—Strips of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/19—Attachment of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/19—Attachment of light sources or lamp holders
    • F21S43/195—Details of lamp holders, terminals or connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • F21S43/315—Optical layout thereof using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors

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

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular lighting fixture with a novel design.SOLUTION: A vehicular lighting fixture comprises a first three-dimensional circuit component 22a and a second three-dimensional circuit component 22b including: rod-like parts 28a and 28b made of an insulating material; LEDs 30a and 30b provided on the rod-like parts 28a and 28b; and conductor patterns 32a and 32b formed on surfaces of the rod-like parts 28a and 28b to supply power to the LEDs 30a and 30b. The LEDs 30a and 30b are provided on tip ends of the rod-like parts 28a and 28b.

Description

本発明は、車両用灯具に関し、特に光源としてＬＥＤ等の半導体発光素子を用いた車両用灯具に関する。   The present invention relates to a vehicular lamp, and more particularly to a vehicular lamp that uses a semiconductor light emitting element such as an LED as a light source.

従来より、ＬＥＤ等の半導体発光素子を用いた車両用灯具が知られている。例えば特許文献１には、複数のＬＥＤが前面レンズおよびランプボディに沿って配設された車両用灯具が開示されている。   Conventionally, a vehicular lamp using a semiconductor light emitting element such as an LED is known. For example, Patent Document 1 discloses a vehicular lamp in which a plurality of LEDs are arranged along a front lens and a lamp body.

上記特許文献１に開示された車両用灯具では、曲面形状の前面レンズおよびランプボディに沿って複数のＬＥＤを配置するために、階段状に屈曲形成されたメタルベースＦＰＣ（フレキシブルプリント基板）を用いている。このメタルベースＦＰＣは、導光体をフィルムに一体化して形成したフレキシブルプリント基板を可撓性を有する金属性ベースにさらに一体化したものである。   In the vehicular lamp disclosed in Patent Document 1, a metal base FPC (flexible printed circuit board) bent in a step shape is used to arrange a plurality of LEDs along a curved front lens and a lamp body. ing. This metal base FPC is obtained by further integrating a flexible printed board formed by integrating a light guide with a film into a flexible metal base.

特開２０１２−１６０４３０号公報JP 2012-160430 A

ところで、近年、車両用灯具に関するユーザの嗜好が多様化しており、従来とは異なる斬新な意匠の車両用灯具が求められるようになってきている。しかしながら、従来のＦＰＣを用いた構造は、メタルベースの成形が制限される、ＬＥＤの配置が制限される、ＦＰＣとメタルベースを固定するためのスペースが必要となるといった課題があり、車両用灯具の意匠に制約が生じる可能性がある。   By the way, in recent years, the user's preference regarding a vehicle lamp has diversified, and a vehicle lamp having a novel design different from the conventional one has been demanded. However, the structure using the conventional FPC has such problems that the metal base molding is limited, the LED arrangement is limited, and a space for fixing the FPC and the metal base is required. There may be restrictions on the design.

本発明はこうした状況に鑑みてなされたものであり、その目的は、斬新な意匠の車両用灯具を提供することにある。   This invention is made | formed in view of such a condition, The objective is to provide the vehicle lamp of a novel design.

上記課題を解決するために、本発明のある態様の車両用灯具は、絶縁材料により形成された棒状部と、棒状部に設けられた半導体発光素子と、棒状部の表面に形成された半導体発光素子に給電するための導体パターンとを含む立体回路部品を備える。   In order to solve the above problems, a vehicle lamp according to an aspect of the present invention includes a rod-shaped portion formed of an insulating material, a semiconductor light-emitting element provided on the rod-shaped portion, and a semiconductor light-emitting device formed on the surface of the rod-shaped portion. And a three-dimensional circuit component including a conductor pattern for supplying power to the element.

半導体発光素子は、棒状部の先端に設けられてもよい。また、半導体発光素子は、棒状部の側面に設けられてもよい。   The semiconductor light emitting element may be provided at the tip of the rod-shaped part. In addition, the semiconductor light emitting element may be provided on the side surface of the rod-shaped portion.

立体回路部品は、複数の棒状部を含み、各棒状部に半導体発光素子が設けられてもよい。   The three-dimensional circuit component may include a plurality of rod-shaped portions, and a semiconductor light emitting element may be provided in each rod-shaped portion.

複数の棒状部は、一方の端部が互いに近接するとともに他方の端部が互いに離間するように配置されてもよい。それぞれの棒状部の他方の端部に半導体発光素子が設けられてもよい。   The plurality of rod-shaped portions may be arranged such that one end portion is close to each other and the other end portion is separated from each other. A semiconductor light emitting element may be provided at the other end of each rod-shaped portion.

本発明によれば、斬新な意匠の車両用灯具を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, the vehicle lamp of a novel design can be provided.

本発明の実施形態に係る車両用灯具を説明するための斜視図である。It is a perspective view for demonstrating the vehicle lamp which concerns on embodiment of this invention. 本発明の実施形態に係る灯具ユニットを説明するための斜視図である。It is a perspective view for demonstrating the lamp unit which concerns on embodiment of this invention. 本発明のさらに別の実施形態に係る灯具ユニットを説明するための斜視図である。It is a perspective view for demonstrating the lamp unit which concerns on another embodiment of this invention. 本発明のさらに別の実施形態に係る灯具ユニットを説明するための斜視図である。It is a perspective view for demonstrating the lamp unit which concerns on another embodiment of this invention. 本発明の別の実施形態に係る灯具ユニットを説明するための概略図である。It is the schematic for demonstrating the lamp unit which concerns on another embodiment of this invention. 図５に示す灯具ユニットを用いた車両用灯具の発光状態を示す図である。It is a figure which shows the light emission state of the vehicle lamp using the lamp unit shown in FIG.

以下、図面を参照して本発明の実施形態に係る車両用灯具について詳細に説明する。   Hereinafter, a vehicular lamp according to an embodiment of the present invention will be described in detail with reference to the drawings.

図１は、本発明の実施形態に係る車両用灯具１０を説明するための斜視図である。   FIG. 1 is a perspective view for explaining a vehicular lamp 10 according to an embodiment of the present invention.

図１に示すように、車両用灯具１０においては、ランプボディ１２と透明な前面カバー１３とにより構成される灯室内に、３つの灯具ユニット２０が収容されている。３つの灯具ユニット２０は、光源としてＬＥＤを備えたものであり、車幅方向に並んで配置されている。３つの灯具ユニット２０は、同一または類似の構造を有する。   As shown in FIG. 1, in the vehicular lamp 10, three lamp units 20 are accommodated in a lamp chamber constituted by a lamp body 12 and a transparent front cover 13. The three lamp units 20 are provided with LEDs as light sources, and are arranged side by side in the vehicle width direction. The three lamp units 20 have the same or similar structure.

図２は、本発明の実施形態に係る灯具ユニット２０を説明するための斜視図である。本実施形態に係る灯具ユニット２０は、第１立体回路部品２２ａおよび第２立体回路部品２２ｂの２つの立体回路部品から成る。第１立体回路部品２２ａおよび第２立体回路部品２２ｂは、ＭＩＤ（Molded Interconnect Device）技術を用いて形成されている。ＭＩＤは、樹脂やセラミックスなどの絶縁材料を用いた射出成形品の表面に、立体的に回路パターンを形成する技術である。   FIG. 2 is a perspective view for explaining the lamp unit 20 according to the embodiment of the present invention. The lamp unit 20 according to the present embodiment includes two three-dimensional circuit components, a first three-dimensional circuit component 22a and a second three-dimensional circuit component 22b. The first three-dimensional circuit component 22a and the second three-dimensional circuit component 22b are formed using MID (Molded Interconnect Device) technology. MID is a technique for three-dimensionally forming a circuit pattern on the surface of an injection molded product using an insulating material such as resin or ceramics.

第１立体回路部品２２ａは、平板状の基部２６ａと、該基部２６ａ上に形成された複数の棒状部２８ａと、各棒状部２８ａの先端に設けられたＬＥＤ３０ａと、基部２６ａおよび各棒状部２８ａの表面に形成された、各ＬＥＤ３０ａに給電するための導体パターン３２ａとから構成されている。基部２６ａおよび棒状部２８ａは、絶縁材料により一体的に形成されている。棒状部２８ａは、基部２６ａに対して垂直に立設された棒状体である。図２に示す実施形態において、棒状部２８ａは円錐台形状であるが、その形状は特に限定されず、例えば円柱形状、角柱形状などであってもよい。各棒状部２８ａの先端には、棒状部２８ａの高さ方向と同じ方向に光を出射するように、ＬＥＤ３０ａが設けられている。   The first three-dimensional circuit component 22a includes a flat base portion 26a, a plurality of rod-like portions 28a formed on the base portion 26a, an LED 30a provided at the tip of each rod-like portion 28a, the base portion 26a, and each rod-like portion 28a. And a conductor pattern 32a for supplying power to each LED 30a. The base portion 26a and the rod-shaped portion 28a are integrally formed of an insulating material. The rod-shaped portion 28a is a rod-shaped body erected vertically with respect to the base portion 26a. In the embodiment shown in FIG. 2, the rod-shaped portion 28 a has a truncated cone shape, but the shape is not particularly limited, and may be, for example, a cylindrical shape, a prismatic shape, or the like. An LED 30a is provided at the tip of each rod-shaped portion 28a so as to emit light in the same direction as the height direction of the rod-shaped portion 28a.

第２立体回路部品２２ｂもまた、第２立体回路部品２２ｂと同様の構造を有する。すなわち、第２立体回路部品２２ｂは、平板状の基部２６ｂと、該基部２６ｂ上に形成された複数の棒状部２８ｂと、各棒状部２８ｂの先端に設けられたＬＥＤ３０ｂと、基部２６ｂおよび各棒状部２８ｂの表面に形成された、各ＬＥＤ３０ｂに給電するための導体パターン３２ｂとから構成されている。基部２６ｂおよび棒状部２８ｂは、絶縁材料により一体的に形成されている。棒状部２８ｂは、基部２６ｂに対して垂直に立設された棒状体である。図２に示す実施形態において、棒状部２８ｂは円錐台形状であるが、その形状は特に限定されず、例えば円柱形状、角柱形状などであってもよい。各棒状部２８ｂの先端には、棒状部２８ｂの長さ方向と同じ方向に光を出射するように、ＬＥＤ３０ｂが設けられている。   The second 3D circuit component 22b also has the same structure as the second 3D circuit component 22b. That is, the second three-dimensional circuit component 22b includes a flat base portion 26b, a plurality of rod-shaped portions 28b formed on the base portion 26b, an LED 30b provided at the tip of each rod-shaped portion 28b, the base portion 26b, and each rod-shaped portion. It is comprised from the conductor pattern 32b for supplying electric power to each LED30b formed in the surface of the part 28b. The base portion 26b and the rod-shaped portion 28b are integrally formed of an insulating material. The rod-shaped portion 28b is a rod-shaped body erected vertically with respect to the base portion 26b. In the embodiment shown in FIG. 2, the rod-shaped portion 28 b has a truncated cone shape, but the shape is not particularly limited, and may be, for example, a cylindrical shape, a prismatic shape, or the like. At the tip of each rod-shaped portion 28b, an LED 30b is provided so as to emit light in the same direction as the length direction of the rod-shaped portion 28b.

第１立体回路部品２２ａの基部２６ａは、第１立体回路部品２２ａの隣接する２つの棒状部２８ａ間に貫通孔３４を有する。そして、この貫通孔３４に第２立体回路部品２２ｂの棒状部２８ｂが挿通するようにして、第１立体回路部品２２ａと第２立体回路部品２２ｂが組み合わされる。第１立体回路部品２２ａの基部２６ａと第２立体回路部品２２ｂの基部２６ｂとの間の距離は、スペーサ３６により規定される。   The base portion 26a of the first molded circuit component 22a has a through hole 34 between two adjacent rod-shaped portions 28a of the first molded circuit component 22a. Then, the first three-dimensional circuit component 22a and the second three-dimensional circuit component 22b are combined so that the rod-like portion 28b of the second three-dimensional circuit component 22b is inserted into the through hole 34. The distance between the base portion 26a of the first 3D circuit component 22a and the base portion 26b of the second 3D circuit component 22b is defined by the spacer 36.

このように本実施形態では、２つの立体回路部品を組み合わせて灯具ユニット２０を構成している。これにより、１つの立体回路部品で構成する場合よりも、複数の棒状体の間隔を小さくできるとともに、導体パターンの引き回しが容易となる。   Thus, in the present embodiment, the lamp unit 20 is configured by combining two three-dimensional circuit components. Thereby, the interval between the plurality of rod-shaped bodies can be made smaller and the conductor pattern can be easily routed than in the case of a single three-dimensional circuit component.

また、本実施形態に係る灯具ユニット２０は、中央部に位置する棒状部２８ａ、２８ｂの長さが最も短く、外側に離れるに従って棒状部２８ａ、２８ｂの長さが徐々に長くなるよう形成されている。このように位置によって棒状部２８ａ、２８ｂの長さを変えることにより、お椀状に立体的に灯具ユニット２０を光らせることができる。   Further, the lamp unit 20 according to the present embodiment is formed such that the lengths of the rod-like portions 28a and 28b located at the center are the shortest, and the lengths of the rod-like portions 28a and 28b are gradually increased as the distance from the outside increases. Yes. Thus, by changing the length of the rod-like portions 28a and 28b depending on the position, the lamp unit 20 can be illuminated in a three-dimensional manner in a bowl shape.

上述のように構成された灯具ユニット２０が搭載された車両用灯具１０において、導体パターン３２ａ、３２ｂを介して各ＬＥＤ３０ａ、３０ｂに電流が供給されると、各ＬＥＤ３０、３０ｂが発光する。各ＬＥＤ３０、３０ｂから出射された光は、直接に前面カバー１３を透過し、灯具前方に照射される。   In the vehicular lamp 10 on which the lamp unit 20 configured as described above is mounted, when current is supplied to the LEDs 30a and 30b via the conductor patterns 32a and 32b, the LEDs 30 and 30b emit light. The light emitted from each of the LEDs 30 and 30b directly passes through the front cover 13 and is irradiated in front of the lamp.

本実施形態に係る灯具ユニット２０を製造する場合、まず、樹脂やセラミックスを用いて、基部２６ａ、２６ｂ上に複数の棒状部２８ａ、２８ｂが形成された射出成形品を製造する。次に、射出成形品の表面に直接、導体パターン３２ａ、３２ｂを形成し、ＬＥＤ３０ａ、３０ｂを搭載する。このようにして作られた第１立体回路部品２２ａおよび第２立体回路部品２２ｂを組み付けることにより、灯具ユニット２０が形成される。   When the lamp unit 20 according to the present embodiment is manufactured, first, an injection molded product in which a plurality of rod-shaped portions 28a and 28b are formed on the base portions 26a and 26b is manufactured using resin or ceramics. Next, the conductor patterns 32a and 32b are directly formed on the surface of the injection molded product, and the LEDs 30a and 30b are mounted. The lamp unit 20 is formed by assembling the first molded circuit component 22a and the second molded circuit component 22b thus produced.

本実施形態では、このようにＭＩＤ技術を用いることにより、棒状体の先端という非常に狭い領域にＬＥＤ３０ａ、３０ｂを配置することが可能となり、また、棒状体の間隔を狭くすることができる。その結果、高密度で配置された複数の棒状部２８ａ、２８ｂの先端にＬＥＤ３０ａ、３０ｂが搭載された斬新な意匠の車両用灯具を実現できる。   In the present embodiment, by using the MID technique in this manner, the LEDs 30a and 30b can be arranged in a very narrow region called the tip of the rod-shaped body, and the interval between the rod-shaped bodies can be narrowed. As a result, it is possible to realize a vehicular lamp having a novel design in which the LEDs 30a and 30b are mounted on the tips of the plurality of rod-like portions 28a and 28b arranged at high density.

本実施形態に係る車両用灯具１０の意匠は、非常に斬新であるが、同様の意匠をＦＰＣを用いて実現することは容易ではない。ＦＰＣを用いて本実施形態に係る灯具ユニット２０と同様な構成を実現しようとした場合、複数の棒状体を基部上に形成した後、ＬＥＤを搭載したＦＰＣをメタルベースに組み付ける方法が考えられる。しかしながら、狭い間隔で配置された複数の棒状体にＦＰＣを組み付けていくのは容易ではなく、組み立てコストが高くなる。一方、棒状体の間隔を広くした場合、ＦＰＣの組み付け性は高くなるが、まばらに棒状体が配置されることになるので、本実施形態と同じ意匠性を実現することはできない。   The design of the vehicular lamp 10 according to the present embodiment is very novel, but it is not easy to realize a similar design using FPC. When the same configuration as that of the lamp unit 20 according to the present embodiment is to be realized using the FPC, a method of assembling the FPC on which the LED is mounted on the metal base after forming a plurality of rod-like bodies on the base can be considered. However, it is not easy to assemble the FPC to a plurality of rod-like bodies arranged at narrow intervals, and the assembly cost increases. On the other hand, when the interval between the rod-shaped bodies is widened, the assemblability of the FPC is improved, but the rod-shaped bodies are sparsely arranged, so that the same designability as in the present embodiment cannot be realized.

図３は、本発明のさらに別の実施形態に係る灯具ユニット４０を説明するための斜視図である。本実施形態に係る灯具ユニット４０もまた、ＭＩＤ技術を用いて形成された立体回路部品２２を備える。   FIG. 3 is a perspective view for explaining a lamp unit 40 according to still another embodiment of the present invention. The lamp unit 40 according to the present embodiment also includes the three-dimensional circuit component 22 formed using the MID technique.

立体回路部品２２は、平板状の基部２６と、該基部２６上に形成された複数の棒状部２８と、各棒状部２８の先端および側面に設けられたＬＥＤ３０と、基部２６および各棒状部２８の表面に形成された、各ＬＥＤ３０に給電するための導体パターン３２とから構成されている。   The three-dimensional circuit component 22 includes a flat plate-like base portion 26, a plurality of rod-like portions 28 formed on the base portion 26, LEDs 30 provided on the tip and side surfaces of the rod-like portions 28, the base portion 26, and the rod-like portions 28. And a conductor pattern 32 for supplying power to each LED 30.

基部２６および棒状部２８は、絶縁材料により一体的に形成されている。図３に示す実施形態において、棒状部２８は四角柱形状であるが、その形状は特に限定されない。   The base portion 26 and the rod-shaped portion 28 are integrally formed of an insulating material. In the embodiment shown in FIG. 3, the rod-shaped portion 28 has a quadrangular prism shape, but the shape is not particularly limited.

本実施形態のように、各棒状部２８の先端だけでなく、側面にもＬＥＤ３０を設けた場合も、斬新な意匠の車両用灯具を実現できる。   A vehicle lamp with a novel design can be realized when the LEDs 30 are provided not only at the tip of each rod-shaped portion 28 but also at the side surface as in the present embodiment.

図４は、本発明のさらに別の実施形態に係る灯具ユニット５０を説明するための斜視図である。本実施形態に係る灯具ユニット５０もまた、ＭＩＤ技術を用いて形成された立体回路部品２２を備える。   FIG. 4 is a perspective view for explaining a lamp unit 50 according to still another embodiment of the present invention. The lamp unit 50 according to the present embodiment also includes the three-dimensional circuit component 22 formed using the MID technique.

立体回路部品２２は、平板状の基部２６と、該基部２６上に形成された複数の棒状部２８と、各棒状部２８の先端に設けられた立体十字状部３３と、立体十字状部３３を構成する各棒状部の先端に設けられたＬＥＤ３０と、基部２６、棒状部２８および立体十字状部３３の表面に形成された、各ＬＥＤ３０に給電するための導体パターン３２とから構成されている。   The three-dimensional circuit component 22 includes a flat plate-like base portion 26, a plurality of rod-like portions 28 formed on the base portion 26, a solid cross-like portion 33 provided at the tip of each rod-like portion 28, and a three-dimensional cross-like portion 33. LED 30 provided at the tip of each bar-shaped part, and a conductor pattern 32 formed on the surface of the base 26, bar-shaped part 28, and three-dimensional cross-shaped part 33 for supplying power to each LED 30. .

基部２６、棒状部２８および立体十字状部３３は、絶縁材料により一体的に形成されている。図４に示す実施形態において、棒状部２８および立体十字状部３３は、四角柱を用いて形成されているが、その形状は特に限定されない。   The base 26, the rod-shaped portion 28, and the three-dimensional cross-shaped portion 33 are integrally formed of an insulating material. In the embodiment shown in FIG. 4, the rod-shaped portion 28 and the solid cross-shaped portion 33 are formed using a quadrangular prism, but the shapes thereof are not particularly limited.

立体十字状部３３は、５つの棒状部から構成されている。これら５つの棒状部は、一方の端部が互いに近接するとともに他方の端部が互いに離間するように配置されている。より具体的には、基部２６から延びる棒状部２８の先端から、互いに直交する三軸方向に延びるように５つの棒状部が形成されている。５つの棒状部の各先端には、各棒状部の長さ方向と同じ方向に光を出射するように、ＬＥＤ３０が設けられている。   The solid cross-shaped portion 33 is composed of five rod-shaped portions. These five rod-shaped portions are arranged so that one end is close to each other and the other end is separated from each other. More specifically, five rod-shaped portions are formed so as to extend in the triaxial directions orthogonal to each other from the tip of the rod-shaped portion 28 extending from the base portion 26. An LED 30 is provided at each tip of the five rod-shaped portions so as to emit light in the same direction as the length direction of each rod-shaped portion.

立体十字状部のような複雑な形状の場合、ＦＰＣを組み付けるのは容易ではない。本実施形態のように、ＭＩＤ技術を用いた立体回路部品として立体十字状部３３を形成することで、斬新な意匠の車両用灯具を実現できる。   In the case of a complicated shape such as a three-dimensional cross, it is not easy to assemble the FPC. As in this embodiment, by forming the three-dimensional cross portion 33 as a three-dimensional circuit component using the MID technology, a vehicle lamp with a novel design can be realized.

図５は、本発明の別の実施形態に係る灯具ユニット６０を説明するための概略図である。本実施形態に係る灯具ユニット６０もまた、ＭＩＤ技術を用いて形成された立体回路部品２２を備える。   FIG. 5 is a schematic view for explaining a lamp unit 60 according to another embodiment of the present invention. The lamp unit 60 according to this embodiment also includes the three-dimensional circuit component 22 formed using the MID technique.

立体回路部品２２は、平板状の基部２６と、該基部２６上に形成された複数の棒状部２８と、各棒状部２８の先端に設けられたＬＥＤ３０と、各棒状部２８の先端部近傍に設けられた複数の棒状導光体６２と、基部２６、棒状部２８の表面に形成された、各ＬＥＤ３０に給電するための導体パターン３２とから構成されている。   The three-dimensional circuit component 22 includes a flat base portion 26, a plurality of rod-like portions 28 formed on the base portion 26, an LED 30 provided at the tip of each rod-like portion 28, and the vicinity of the tip portion of each rod-like portion 28. A plurality of rod-shaped light guides 62 provided and a conductor pattern 32 formed on the surface of the base portion 26 and the rod-shaped portion 28 for supplying power to each LED 30 are configured.

棒状導光体６２は、ＬＥＤ３０からの光を一端面から入射させて、内部で全反射を繰り返しながら導光し、他端面から出射させる。棒状導光体６２の側面にステップを設け、該側面から導光される光の一部を出射させてもよい。複数の棒状導光体６２は、ＬＥＤ３０の近傍から放射棒に延びるように配置されている。   The rod-shaped light guide 62 allows light from the LED 30 to enter from one end surface, guide light while repeating total reflection inside, and output from the other end surface. A step may be provided on the side surface of the rod-shaped light guide 62, and a part of the light guided from the side surface may be emitted. The plurality of rod-shaped light guides 62 are arranged so as to extend from the vicinity of the LED 30 to the radiation rod.

図６は、図５に示す灯具ユニット６０を用いた車両用灯具７０の発光状態を示す。車両用灯具７０においては、ランプボディ１２と透明な前面カバー１３とにより構成される灯室内に、図５で説明した灯具ユニット６０が収容されている。   FIG. 6 shows a light emission state of the vehicular lamp 70 using the lamp unit 60 shown in FIG. In the vehicular lamp 70, the lamp unit 60 described with reference to FIG. 5 is accommodated in a lamp chamber constituted by the lamp body 12 and the transparent front cover 13.

図６に示すように、棒状部の先端に設けられたＬＥＤ３０から直接に光が出射されるとともに、ＬＥＤ３０からの光が棒状導光体６２内を導光された後、棒状導光体６２の先端から出射されており、あたかも花火のように発光する斬新な意匠の車両用灯具を実現できる。上述のように棒状導光体６２の側面にステップを設ければ、またさらに異なる発光状態を作り出すことも可能である。   As shown in FIG. 6, light is directly emitted from the LED 30 provided at the tip of the rod-shaped portion, and after the light from the LED 30 is guided through the rod-shaped light guide 62, A vehicle lamp with a novel design that is emitted from the tip and emits light like fireworks can be realized. If a step is provided on the side surface of the rod-shaped light guide 62 as described above, it is possible to create a different light emission state.

以上、実施の形態をもとに本発明を説明した。これらの実施形態は例示であり、各構成要素や各処理プロセスの組合せにいろいろな変形例が可能なこと、またそうした変形例も本発明の範囲にあることは当業者に理解されるところである。   The present invention has been described above based on the embodiment. It should be understood by those skilled in the art that these embodiments are exemplifications, and that various modifications can be made to the combination of each component and each processing process, and such modifications are also within the scope of the present invention.

例えば、上述の実施形態では、半導体発光素子としてＬＥＤを例示したが、半導体発光素子であればＬＥＤに限定されず、例えば半導体レーザが用いられてもよい。   For example, in the above-described embodiment, the LED is exemplified as the semiconductor light emitting element. However, the semiconductor light emitting element is not limited to the LED, and for example, a semiconductor laser may be used.

１０、７０ 車両用灯具、 １２ ランプボディ、 １３ 前面カバー、 ２０，４０，５０，６０ 灯具ユニット、 ２２ａ 第１立体回路部品、 ２２ｂ 第２立体回路部品、 ２６ａ，２６ｂ，２６ 基部、 ２８ａ，２８ｂ，２８ 棒状部、 ３０ａ，３０ｂ，３０ ＬＥＤ、 ３２ａ，３２ｂ、３２ 導体パターン、 ３３ 立体十字状部、 ３４ 貫通孔、 ６２ 棒状導光体。   10, 70 Vehicle lamp, 12 lamp body, 13 front cover, 20, 40, 50, 60 lamp unit, 22a first 3D circuit component, 22b second 3D circuit component, 26a, 26b, 26 base, 28a, 28b, 28 Bar-shaped portion, 30a, 30b, 30 LED, 32a, 32b, 32 conductor pattern, 33 solid cross-shaped portion, 34 through hole, 62 rod-shaped light guide.

Claims (5)

絶縁材料により形成された棒状部と、前記棒状部に設けられた半導体発光素子と、前記棒状部の表面に形成された前記半導体発光素子に給電するための導体パターンと、を含む立体回路部品を備えることを特徴とする車両用灯具。   A three-dimensional circuit component comprising: a rod-shaped portion formed of an insulating material; a semiconductor light-emitting element provided on the rod-shaped portion; and a conductor pattern for supplying power to the semiconductor light-emitting element formed on the surface of the rod-shaped portion. A vehicular lamp characterized by comprising: 前記半導体発光素子が前記棒状部の先端に設けられた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 semiconductor light emitting element is provided at a tip of the rod-shaped portion. 前記半導体発光素子が前記棒状部の側面に設けられたことを特徴とする請求項１または２に記載の車両用灯具。   The vehicular lamp according to claim 1, wherein the semiconductor light emitting element is provided on a side surface of the rod-shaped portion. 前記立体回路部品は、複数の前記棒状部を含み、各棒状部に前記半導体発光素子が設けられたことを特徴とする請求項１から３のいずれかに記載の車両用灯具。   4. The vehicular lamp according to claim 1, wherein the three-dimensional circuit component includes a plurality of the rod-shaped portions, and the semiconductor light-emitting element is provided in each rod-shaped portion. 5. 複数の前記棒状部は、一方の端部が互いに近接するとともに他方の端部が互いに離間するように配置されており、それぞれの前記棒状部の前記他方の端部に半導体発光素子が設けられたことを特徴とする請求項４に記載の車両用灯具。   The plurality of rod-shaped portions are arranged such that one end is close to each other and the other end is separated from each other, and a semiconductor light emitting element is provided at the other end of each of the rod-shaped portions The vehicular lamp according to claim 4.
JP2013013094A 2013-01-28 2013-01-28 Vehicular lighting fixture Pending JP2014146447A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016139469A (en) * 2015-01-26 2016-08-04 株式会社小糸製作所 Light source unit
CN106969308A (en) * 2015-10-23 2017-07-21 法雷奥照明公司 Lighting device with optical waveguide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016139469A (en) * 2015-01-26 2016-08-04 株式会社小糸製作所 Light source unit
CN106969308A (en) * 2015-10-23 2017-07-21 法雷奥照明公司 Lighting device with optical waveguide

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