JP2004193026A - Inner lens for automobile lamp and automobile lamp equipped with the same - Google Patents

Inner lens for automobile lamp and automobile lamp equipped with the same Download PDF

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Publication number
JP2004193026A
JP2004193026A JP2002361444A JP2002361444A JP2004193026A JP 2004193026 A JP2004193026 A JP 2004193026A JP 2002361444 A JP2002361444 A JP 2002361444A JP 2002361444 A JP2002361444 A JP 2002361444A JP 2004193026 A JP2004193026 A JP 2004193026A
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Japan
Prior art keywords
light
lamp
light source
inner lens
lens
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2002361444A
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Japanese (ja)
Inventor
Jun Takahashi
潤 高橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kanto Jidosha Kogyo KK
Toyota Motor East Japan Inc
Original Assignee
Kanto Jidosha Kogyo KK
Kanto Auto Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kanto Jidosha Kogyo KK, Kanto Auto Works Ltd filed Critical Kanto Jidosha Kogyo KK
Priority to JP2002361444A priority Critical patent/JP2004193026A/en
Publication of JP2004193026A publication Critical patent/JP2004193026A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—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]

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

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inner lens for an automobile lamp with an excellent design property and effectively utilizing light of an LED. <P>SOLUTION: The inner lens 12 has a transmission part 13 for transmitting light from light source lamps 15 composed of the LEDs at the center of a front face, and a reflection part 14 for reflecting and emitting the light from the light source lamps 15 at a periphery of the transmission part 13. The transmission part 13 has lens parts 16 for emitting the light from the light source lamps 15 with directivity imparted thereto, and the part excluding the lens part 16 is made to emit a surface light by using a leaked light. The reflection part 14 is integrally formed into almost a ring shape at the periphery of the transmission part 13 and reflects and emits the leaked light from the transmission part 13. The automobile lamp is arranged at a rear end part of a body to constitute a rear combination lamp. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は乗用車等の車両における自動車用ランプに装着されるインナーレンズに関するものである。
【０００２】
【従来の技術】
最近、自動車用ランプの光源として、比較的狭い照射角度で点発光して直進する発光素子（以下、ＬＥＤと称する。）を利用したものが実用化されている。たとえば図３に示すように、このＬＥＤを光源とするいわゆる直射・反射タイプのものでは、ＬＥＤ１０１の一個一個に対して、その周囲にそれぞれ反射面１０２を配置し、各ＬＥＤ１０１からの光を、図示のように直接または反射面１０２にて反射して照射するようにしている。
【０００３】
あるいはまた、図４に示すように、いわゆる直射ステップ（インナーレンズ）タイプのものでは、ランプ２００の光源として１個又は複数個のＬＥＤ２０１を用い、その前面にレンズ（ステップ）２０２を配置する。そして、各ＬＥＤ２０１からの光は、図示のようにレンズ２０２を透過して面発光として照射される。なお、このタイプのランプ２００はハイマウントストップランプ等で多く使用されている。
【０００４】
【発明が解決しようとする課題】
図３に示すランプ１００では、光を効率よく前方へ照射するために、１個１個のＬＥＤ１０１毎に反射面１０２が設けられ、それぞれが点発光する。また、図４に示すランプ２００では、ＬＥＤ２０１の前方にレンズ２０２が設けられ、面状の均一な発光をさせるようにしている。これらのランプ１００，２００においては、光源であるＬＥＤ１０１，２０１からの光を単に反射或いは透過させるだけで、ＬＥＤの発光特性を有効利用するのが必ずしも容易でなかった。
【０００５】
以上の点を鑑みて本発明は創作されたもので、光源ランプであるＬＥＤの発光を有効活用するとともに、意匠性に優れた自動車用ランプを提供することを目的とする。
【０００６】
【課題を解決するための手段】
本発明の自動車用ランプは、光源ランプを備えた自動車用ランプに装着されるインナーレンズであって、その正面中央で光源ランプからの光を透過させて照射する透過部と、この透過部の周囲で前記光源ランプからの光を反射させて照射する反射部とを有することを特徴としている。
【０００７】
前記構成において、前記透過部には、光源ランプからの光に指向性を持たせて照射するレンズ部が形成され、このレンズ部以外の領域では漏光を使って面発光させることができる。前記反射部は、好ましくは、前記透過部の周囲に概略リング状に一体に形成される。
【０００８】
本発明によれば、インナーレンズは、その正面中央で光源ランプからの光を透過させて照射する透過部と、この透過部の周囲で光源ランプからの光を反射させて照射する反射部とを有する。透過部では、レンズ部によって光源ランプからの光に指向性を持たせて照射し、レンズ部以外の領域では漏光を使って面発光させる。さらに、反射部では透過部からの漏光を反射して照射させる。このように、透過部と反射部とにより光源ランプからの光を有効活用して効率よく照射することができる。
【０００９】
【発明の実施の形態】
以下、図面に基き、本発明によるインナーレンズの好適な実施の形態を説明する。
図１は、本発明によるインナーレンズを適用した自動車ランプを示している。この実施の形態において、ランプ１０は、自動車ボディの前端に配置されるヘッドランプや補助灯などであっても、また、後端部に配置構成されるリヤコンビネーションランプであってもよく、ランプ本体１１に、後述するインナーレンズ１２が装着される。
【００１０】
インナーレンズ１２は、合成樹脂材料、好適にはアクリル樹脂により成形され、その前面の正面中央において、光源ランプからの光を透過させて照射する透過部１３と、この透過部１３の周囲で光源ランプからの光を反射させて照射する反射部１４と、反射部１４の外周縁から延設した円柱状の側壁１７とにより構成されている。
【００１１】
透過部１３は、図１及び図２に示すように、円盤状の第１の透過部１２ａ（以下、透過部１２ａと称す）と、透過部１２ａの周縁から延設し、略円柱状の第２の透過部１２ｂ（以下、透過部１２ｂと称す）と、により構成されている。
【００１２】
第１の透過部１２ａには、後述する各ＬＥＤ１５に対応してレンズ部１６（図２、Ａ領域）が、例えば図示例のようにほぼ円周状もしくは中央部を基点として放射状に成形されており、ＬＥＤ１５からの光に指向性を持たせて、即ち図２に示されるようにランプ１０の正面方向に光を照射するようになっている。また、このレンズ部１６以外の領域（図２、Ｂ領域）では漏光を使って面発光させることができる。
【００１３】
これらの透過部１２ａと透過部１２ｂとに画成される領域Ｓ内に、光源ランプとしての複数のＬＥＤ１５が配設される。
【００１４】
反射部１４は、第２の透過部１２ｂの基端１２ｂ１から延設し、概略リング状に形成されている（図２、Ｃ領域）。この反射部１４の表面には、各ＬＥＤ１５からの漏光をライト前方に効率的に反射させるために、複数の段部１４ａが形成されており、反射部１４では合成樹脂の基体表面にメッキが施されている。
【００１５】
上記の如く構成されたインナーレンズ１２が、図１に示すように、ランプ本体１１内に装着されて、各ＬＥＤ１５がＯＮして発光すると、透過部１３ではＬＥＤ１５からレンズ部１６に入射した光は、このレンズ部１６によってランプ１０の正面方向へ照射され、この部分で点発光する。また、ＬＥＤ１５からの光のうちレンズ部１６以外の領域では漏光となって面発光する。さらに、反射部１４では透過部１３からの漏光を反射して照射し、リング状に発光する。
【００１６】
このように本発明の実施形態に係るインナーレンズ１２によれば、ＬＥＤ１５の特徴である点発光を有効に使いながら、漏光を効果的に使うことで、奥行感のある独特な発光が得られる。また、インナーレンズ１２において、リング状の反射部１４にメッキ塗装を施すことで、特に非点灯時に見栄えを向上させることができる。
【００１７】
以上、本発明を実施形態とともに説明したが、本発明は実施形態にのみ限定されるものではなく、本発明の範囲内で変更等が可能である。
たとえば、透過部１３におけるレンズ部１６のＬＥＤの個数や配設方法等は図示例の他に任意の個数と間隔に配置でき、種々の構造が採用可能である。
【００１８】
【発明の効果】
以上説明したように本発明によれば、光源ランプであるＬＥＤからの点発光を有効活用して、独特な光を効率よく照射することができることに加え、極めて意匠性に優れている等の利点を有する。
【図面の簡単な説明】
【図１】本発明の実施形態における自動車ランプを示す斜視図である。
【図２】本発明の実施形態におけるインナーレンズの断面構造例を示す図である。
【図３】従来例を示す図である。
【図４】別の従来例を示す図である。
【符号の説明】
１０ ランプ
１１ ランプ本体
１２ インナーレンズ
１２ａ 第１の透過部
１２ｂ 第２の透過部
１２ｂ１ 基部
１３ 透過部
１４ 反射部
１５ ＬＥＤ
１６ レンズ部
１７ 側壁[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an inner lens mounted on an automobile lamp in a vehicle such as a passenger car.
[0002]
[Prior art]
Recently, as a light source of an automobile lamp, a light source using a light-emitting element (hereinafter, referred to as an LED) that emits point light at a relatively narrow irradiation angle and travels straight has been put to practical use. For example, as shown in FIG. 3, in a so-called direct-reflection type using this LED as a light source, a reflection surface 102 is arranged around each LED 101, and light from each LED 101 is shown in FIG. As described above, the light is irradiated directly or reflected by the reflection surface 102.
[0003]
Alternatively, as shown in FIG. 4, in a so-called direct-injection step (inner lens) type, one or a plurality of LEDs 201 are used as a light source of a lamp 200, and a lens (step) 202 is disposed on the front surface thereof. Then, the light from each LED 201 is transmitted through the lens 202 as shown in FIG. It should be noted that this type of lamp 200 is often used in high mount stop lamps and the like.
[0004]
[Problems to be solved by the invention]
In the lamp 100 shown in FIG. 3, in order to efficiently irradiate light forward, a reflecting surface 102 is provided for each LED 101, and each of the LEDs 101 emits a point light. Further, in the lamp 200 shown in FIG. 4, a lens 202 is provided in front of the LED 201 so as to emit light in a planar manner. In these lamps 100 and 200, it is not always easy to effectively utilize the light emission characteristics of the LEDs simply by reflecting or transmitting the light from the LEDs 101 and 201 as light sources.
[0005]
The present invention has been made in view of the above points, and an object of the present invention is to provide an automotive lamp having excellent design while effectively utilizing the light emission of an LED as a light source lamp.
[0006]
[Means for Solving the Problems]
The vehicle lamp of the present invention is an inner lens mounted on a vehicle lamp provided with a light source lamp, and a transmission part for transmitting and irradiating light from the light source lamp at a front center thereof, and a periphery of the transmission part. And a reflector for reflecting and irradiating light from the light source lamp.
[0007]
In the above-described configuration, a lens portion that irradiates the light from the light source lamp with directivity is formed in the transmission portion, and in a region other than the lens portion, surface light can be emitted using light leakage. The reflection part is preferably formed integrally in a substantially ring shape around the transmission part.
[0008]
According to the present invention, the inner lens has a transmission section that transmits and radiates light from the light source lamp at the center of the front thereof, and a reflection section that reflects and radiates light from the light source lamp around the transmission section. Have. In the transmission section, the light from the light source lamp is radiated with directivity by the lens section, and the area other than the lens section is surface-illuminated using light leakage. Further, the reflection part reflects and irradiates light leaked from the transmission part. As described above, the light from the light source lamp can be effectively used by the transmission portion and the reflection portion to efficiently irradiate the light.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of an inner lens according to the present invention will be described with reference to the drawings.
FIG. 1 shows an automobile lamp to which an inner lens according to the present invention is applied. In this embodiment, the lamp 10 may be a head lamp, an auxiliary light, or the like disposed at a front end of an automobile body, or a rear combination lamp disposed at a rear end. An inner lens 12 to be described later is attached to 11.
[0010]
The inner lens 12 is formed of a synthetic resin material, preferably acrylic resin, and has a transmission portion 13 for transmitting and irradiating light from the light source lamp at the front center of the front surface thereof, and a light source lamp around the transmission portion 13. And a cylindrical side wall 17 extending from the outer peripheral edge of the reflecting portion 14.
[0011]
As shown in FIG. 1 and FIG. 2, the transmitting portion 13 includes a first disc-shaped transmitting portion 12 a (hereinafter, referred to as a transmitting portion 12 a), and extends from the periphery of the transmitting portion 12 a and has a substantially cylindrical shape. And two transmission portions 12b (hereinafter, referred to as transmission portions 12b).
[0012]
In the first transmitting portion 12a, a lens portion 16 (A region in FIG. 2) corresponding to each LED 15 to be described later is formed in a radial shape with a substantially circular or central portion as a base point as shown in the illustrated example. In addition, the light from the LED 15 is provided with directivity, that is, the light is emitted in the front direction of the lamp 10 as shown in FIG. In areas other than the lens section 16 (area B in FIG. 2), surface light can be emitted using light leakage.
[0013]
A plurality of LEDs 15 as light source lamps are arranged in a region S defined by the transmitting portion 12a and the transmitting portion 12b.
[0014]
The reflecting portion 14 extends from the base end 12b1 of the second transmitting portion 12b and is formed in a substantially ring shape (region C in FIG. 2). A plurality of steps 14a are formed on the surface of the reflecting portion 14 in order to efficiently reflect the light leaked from each LED 15 toward the front of the light. In the reflecting portion 14, the surface of the synthetic resin base is plated. Have been.
[0015]
As shown in FIG. 1, when the inner lens 12 configured as described above is mounted in the lamp body 11 and each LED 15 is turned on to emit light, the light that has entered the lens unit 16 from the LED 15 in the transmission unit 13 The light is radiated in the front direction of the lamp 10 by the lens portion 16, and point light is emitted at this portion. In the area other than the lens section 16 of the light from the LED 15, the light is leaked and emits surface light. Further, the reflecting section 14 reflects and irradiates the light leaked from the transmitting section 13 to emit light in a ring shape.
[0016]
As described above, according to the inner lens 12 according to the embodiment of the present invention, unique light emission with a sense of depth can be obtained by effectively using light leakage while effectively using point light emission, which is a feature of the LED 15. Further, in the inner lens 12, by applying plating to the ring-shaped reflecting portion 14, the appearance can be improved particularly when not lit.
[0017]
As described above, the present invention has been described with the embodiments. However, the present invention is not limited to the embodiments, and can be modified within the scope of the present invention.
For example, the number and the arrangement method of the LEDs of the lens unit 16 in the transmission unit 13 can be arranged at an arbitrary number and intervals other than the illustrated example, and various structures can be adopted.
[0018]
【The invention's effect】
As described above, according to the present invention, in addition to being able to efficiently irradiate unique light by effectively utilizing the point light emission from the LED, which is a light source lamp, there are advantages such as extremely excellent design. Having.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an automobile lamp according to an embodiment of the present invention.
FIG. 2 is a diagram illustrating an example of a cross-sectional structure of an inner lens according to an embodiment of the present invention.
FIG. 3 is a diagram showing a conventional example.
FIG. 4 is a diagram showing another conventional example.
[Explanation of symbols]
REFERENCE SIGNS LIST 10 lamp 11 lamp body 12 inner lens 12a first transmitting section 12b second transmitting section 12b1 base section 13 transmitting section reflecting section 15 LED
16 Lens part 17 Side wall

Claims (5)

光源ランプを備えた自動車用ランプに装着されるインナーレンズであって、
その正面中央で光源ランプからの光を透過させて照射する透過部と、この透過部の周囲で前記光源ランプからの光を反射させて照射する反射部とを有することを特徴とする、自動車ランプ用インナーレンズ。An inner lens attached to an automobile lamp having a light source lamp,
An automobile lamp, comprising: a transmission portion that transmits and radiates light from a light source lamp at the center of the front thereof; and a reflection portion that reflects and radiates light from the light source lamp around the transmission portion. For inner lens. 前記透過部に、前記光源ランプからの光に指向性を持たせて照射するレンズ部が形成されており、このレンズ部以外の領域では漏光を使って面発光させることを特徴とする、請求項１に記載の自動車ランプ用インナーレンズ。The transmission unit, wherein a lens unit for irradiating the light from the light source lamp with directivity is formed, and in a region other than the lens unit, surface light is emitted using light leakage, wherein: 2. The inner lens for an automobile lamp according to 1. 前記反射部が、前記透過部の周囲に概略リング状に一体に形成されていることを特徴とする、請求項１又は２に記載の自動車ランプ用インナーレンズ。The inner lens for an automobile lamp according to claim 1, wherein the reflection portion is integrally formed in a substantially ring shape around the transmission portion. 前記請求項１〜３の何れかの自動車ランプ用インナーレンズを備えたことを特徴とする、自動車ランプ。An automotive lamp comprising the inner lens for an automotive lamp according to claim 1. 複数のＬＥＤを適宜の間隔で面状に配設して成る光源ランプと、光源ランプの前方へ配置したインナーレンズとを備え、
上記インナーレンズが、上記光源ランプの正面中央で各ＬＥＤからの出射光を直接透過させて前方へ照射する透過部と、この透過部の周囲に配設し上記各ＬＥＤからの出射光を反射させて前方へ照射するリング状の反射部と、を備えることを特徴とする、自動車ランプ。A light source lamp in which a plurality of LEDs are arranged in a plane at appropriate intervals, and an inner lens disposed in front of the light source lamp,
A transmitting portion for directly transmitting the emitted light from each of the LEDs at the center of the front of the light source lamp and irradiating the light forward, and reflecting the emitted light from each of the LEDs disposed around the transmitting portion; And a ring-shaped reflecting portion for irradiating the vehicle lamp forward.
JP2002361444A 2002-12-12 2002-12-12 Inner lens for automobile lamp and automobile lamp equipped with the same Pending JP2004193026A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1816393A1 (en) 2006-02-02 2007-08-08 Yamaha Hatsudoki Kabushiki Kaisha Lighting device
JP2008192353A (en) * 2007-02-01 2008-08-21 Toyota Motor Corp Lamp structure
JP2009252592A (en) * 2008-04-08 2009-10-29 Ichikoh Ind Ltd Lighting fixture for vehicle

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JPH07122103A (en) * 1993-10-22 1995-05-12 Stanley Electric Co Ltd Automobile signal lamp device
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JPH07122103A (en) * 1993-10-22 1995-05-12 Stanley Electric Co Ltd Automobile signal lamp device
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JP2001060405A (en) * 1999-08-23 2001-03-06 Ichikoh Ind Ltd Lamp unit for vehicle using led light source
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EP1816393A1 (en) 2006-02-02 2007-08-08 Yamaha Hatsudoki Kabushiki Kaisha Lighting device
US7325952B2 (en) 2006-02-02 2008-02-05 Yamaha Hatsudoki Kabushiki Kaisha Lamp and motorcycle provided with the lamp
JP2008192353A (en) * 2007-02-01 2008-08-21 Toyota Motor Corp Lamp structure
JP4557991B2 (en) * 2007-02-01 2010-10-06 トヨタ自動車株式会社 Lamp structure
JP2009252592A (en) * 2008-04-08 2009-10-29 Ichikoh Ind Ltd Lighting fixture for vehicle

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