JP4548845B2 - Outer lens and vehicular lamp including the outer lens - Google Patents

Outer lens and vehicular lamp including the outer lens Download PDF

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JP4548845B2
JP4548845B2 JP2006006343A JP2006006343A JP4548845B2 JP 4548845 B2 JP4548845 B2 JP 4548845B2 JP 2006006343 A JP2006006343 A JP 2006006343A JP 2006006343 A JP2006006343 A JP 2006006343A JP 4548845 B2 JP4548845 B2 JP 4548845B2
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outer lens
lens
inscribed circle
section
inscribed
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JP2007188780A (en
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英隆 岡田
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Stanley Electric Co Ltd
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Stanley Electric Co Ltd
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本発明は、車両用灯具に規定の配光特性を与えるときのアウターレンズ用として用いられる魚眼レンズカット、および、この魚眼レンズカットを採用したアウターレンズを具備する車両用灯具に係るものである。   The present invention relates to a fish-eye lens cut used as an outer lens when a specified light distribution characteristic is given to a vehicle lamp, and a vehicle lamp including an outer lens employing the fish-eye lens cut.

従来のこの種の魚眼レンズカット93aを採用した車両用灯具90の構成の例を示すものが図6であり、この車両用灯具90には回転放物面の反射鏡91が設けられ、この反射鏡91の焦点の位置に置かれた光源92からの光を、略平行光線として反射し、照射を目的とする方向に向けて放射するものとされている。   FIG. 6 shows an example of the configuration of a conventional vehicular lamp 90 employing this type of fish-eye lens cut 93a. The vehicular lamp 90 is provided with a rotating paraboloid reflecting mirror 91, and this reflecting mirror is shown in FIG. It is assumed that light from the light source 92 placed at the focal point 91 is reflected as a substantially parallel light beam and emitted toward the intended direction of irradiation.

そして、前記反射鏡91の反射方向側には、この反射鏡91を覆うようにアウターレンズ93が設けられ、前記した平行光線を透過させるものとされているが、このときに、前記アウターレンズ93には魚眼レンズカット93aが設けられ、前記した平行光線を適宜に拡散することで、車両用灯具90としての配光特性が得られるものとされている。
特開2000−149616号公報
An outer lens 93 is provided on the reflecting direction side of the reflecting mirror 91 so as to cover the reflecting mirror 91 and transmits the above-mentioned parallel rays. At this time, the outer lens 93 is transmitted. Is provided with a fish-eye lens cut 93a, and light distribution characteristics as the vehicular lamp 90 can be obtained by appropriately diffusing the parallel light rays described above.
JP 2000-149616 A

しかしながら、前記した従来の構成の車両用灯具90においては、上記にも説明したように魚眼レンズカット93aは、魚眼レンズなどと称される凸レンズの集合として形成されているので、個々のレンズが接合される位置には接合線93bを生じるものとなり、後続車などから前記接合線93bを看視するときには、この接合線93bがアウターレンズ93の面に、縦横、若しくは、蜂の巣状に現れて、観視者に画一的な印象を与えるものとなり、いわゆる、高級車も大衆車もそれ程のデザイン的な差異を感じさせないものとなり、車格に応じる高級感などの演出が困難となっている。   However, in the vehicular lamp 90 having the above-described conventional configuration, as described above, the fish-eye lens cut 93a is formed as a set of convex lenses referred to as fish-eye lenses or the like. A joining line 93b is generated at the position, and when the joining line 93b is viewed from a succeeding vehicle or the like, the joining line 93b appears vertically or horizontally on the surface of the outer lens 93 or in the form of a honeycomb, and the viewer The so-called luxury car and the popular car do not feel such a design difference, and it is difficult to produce a high-class feeling according to the car grade.

また、デザイン面に変化を持たせるために、個々のレンズカット93a間のピッチを拡げると、配光特性を確保するために前記アウターレンズ93も厚く形成しなければ成らず、アウターレンズ93表面の肉厚となる部分にヒケを生じやすくなり、見栄えを損なうと共に、このヒケを少なくするためには成形工程に時間がかかるなど生産性に問題を生じるという問題点を生じるものとなっていた。   Further, if the pitch between the individual lens cuts 93a is increased in order to change the design surface, the outer lens 93 must also be formed thick in order to ensure light distribution characteristics. Sinking is likely to occur in the thickened portion, thereby deteriorating the appearance, and in order to reduce the sinking, there is a problem that productivity is problematic, for example, it takes a long molding process.

本発明は、上記した従来の課題を解決するための具体的手段として、配光形成用に魚眼レンズが採用されて成る車両用灯具において、前記魚眼レンズは、夫々の区画に内接円を想定すると共に、該内接円の中心で垂直方向と水平方向とに四分割し、この四分割された各区画を更に前記内接円を、前記中心を囲む対角線を軸として反転させ、外側と内側とに同一形状となる外接部と内接部とを設定し、前記内接部と前記外接部とを、本来位置していた場所のレンズ形状を保つ状態で入れ替えを行った区画の集合とされていることを特徴とする魚眼レンズ、および、上記記載の魚眼レンズを具備することを特徴とする車両用灯具を提供することで、課題を解決するものである。   According to the present invention, as a specific means for solving the above-described conventional problems, in a vehicular lamp in which a fisheye lens is adopted for forming a light distribution, the fisheye lens assumes an inscribed circle in each section. The center of the inscribed circle is divided into four in the vertical direction and in the horizontal direction, and each of the four divided sections is further inverted with respect to the inscribed circle about the diagonal line that surrounds the center, and the outer and inner sides are inverted. A circumscribed part and an inscribed part that have the same shape are set, and the inscribed part and the circumscribed part are set as a set of sections that are interchanged while maintaining the lens shape of the place where it originally was located. The problem is solved by providing a fisheye lens characterized by the above and a vehicular lamp characterized by comprising the fisheye lens described above.

本発明により、魚眼レンズは、夫々の区画に内接円を想定すると共に、中心で垂直方向と水平方向とに四分割し、この四分割された各区画を更に前記内接円を、前記中心を囲む対角線を軸として反転させ、外側と内側とに同一形状となる外接部と内接部とを設定し、前記内接部と前記外接部とを、本来位置していた場所のレンズ形状を保つ状態で入れ替えを行った区画の集合とされているものとしたこで、アウターレンズの表面、即ち、後続車の運転者から見るときにも斬新な模様が現れ、高級感など他車との相違を感じられるものとなる。   According to the present invention, the fisheye lens assumes an inscribed circle in each section, and is divided into four in the center in the vertical direction and in the horizontal direction, and each of the four divided sections is further divided into the inscribed circle and the center. The circumscribed part and the inscribed part that are the same shape are set on the outside and the inside, and the inscribed part and the inscribed part are kept in the original lens shape. It is assumed that it is a set of sections that have been replaced in the state, so that the surface of the outer lens, that is, a novel pattern also appears when viewed from the driver of the following car, and it is different from other cars such as luxury Will be felt.

つぎに、本発明を図に示す実施形態に基づいて詳細に説明する。図1に示すものは、本発明に係る魚眼レンズカット2が施されたアウターレンズ1であり、ここでは、個々の魚眼レンズカット2が施されている区画3の形状が明確に現れるように、前記アウターレンズ1を裏面から見た状態で示してあるが、現実に、外気に触れる側に凹凸があると、魚眼レンズカット2間の溝に塵埃が溜まり汚れるなどの問題を生じるので、魚眼レンズカットが行われない平面の側が表面とされている。よって、以降の説明も平面の側を表面として説明を行う。   Below, this invention is demonstrated in detail based on embodiment shown in a figure. FIG. 1 shows an outer lens 1 to which a fisheye lens cut 2 according to the present invention is applied. Here, the outer lens 1 is shown so that the shape of the section 3 to which each fisheye lens cut 2 is applied is clearly shown. Although the lens 1 is shown as viewed from the back side, if there is actually unevenness on the side that comes into contact with the outside air, it will cause problems such as dust collecting in the groove between the fisheye lens cuts 2, so that the fisheye lens cut is performed. The side with no flat surface is the surface. Therefore, the following description will be made with the plane side as the surface.

本発明では、まず、アウターレンズ1の魚眼レンズカット2が行われている夫々の区画3に対して内接円Eを想定すると共に、この区画3の中心Pを通る垂直線Vと水平線Hとで仮想的に四分割を行う。このようにすることで、前記内接円Eは前記垂直線Vと水平線Hとに区画3の夫々の辺の中心で接するものとなる。   In the present invention, first, an inscribed circle E is assumed for each section 3 where the fisheye lens cut 2 of the outer lens 1 is performed, and a vertical line V and a horizontal line H passing through the center P of the section 3 are assumed. Virtually divide into four. In this way, the inscribed circle E comes into contact with the vertical line V and the horizontal line H at the center of each side of the section 3.

よって、前記内接円Eは、四分割された夫々の区画31の対峙する2つの隅の間を円を四等分した円弧で結ぶものとなる。ここで、上記した2つの隅を結ぶ内接円Eの一部である円弧Eaを、この円弧Eaが接している2つの隅を結ぶ直線Qを軸として反対側に回転させれば、四分割された夫々の区画31には略舟型形状に囲まれた一つの小区画31aを生じ、その両側には略3角形状に囲まれた2つの小区画31bと小区画31cとを生じる。   Therefore, the inscribed circle E is formed by connecting the two opposite corners of each of the four divided sections 31 with an arc obtained by dividing the circle into four equal parts. Here, if the arc Ea that is a part of the inscribed circle E that connects the two corners described above is rotated to the opposite side about the straight line Q that connects the two corners that the arc Ea is in contact with, the quadrant is divided. Each of the divided sections 31 has one small section 31a surrounded by a substantially boat-shaped shape, and two small sections 31b and a small section 31c surrounded by a substantially triangular shape are formed on both sides thereof.

そして、前記した略三角形状の2つの小区画31bと小区画31cとは、アウターレンズ1の表面側から見るときには、上記した略舟型形状に囲まれた小区画31aに対して対称形のものと成る。尚、前記したように裏面側には魚眼レンズカット2が施されているものであるので、厚み方向には同一のものではない。   When viewed from the front side of the outer lens 1, the two substantially triangular subsections 31b and 31c are symmetrical with respect to the subsection 31a surrounded by the substantially boat-shaped shape. It becomes. As described above, since the fisheye lens cut 2 is provided on the back surface side, they are not the same in the thickness direction.

図2は、魚眼レンズカット2が行われている1つの区画3の対角線に沿う断面図であり、上記に説明したように、1つの区画3は、まず、中心線Pにより図示の状態では2つの区画31に分けられ、更に、夫々の区画31は、一方の区画31は、図の右側から小区画31b、小区画31a、小区画31cと分けられ、他方の区画31は、同様に右側から小区画31c、小区画31a、小区画31bの順に分けられている。   FIG. 2 is a cross-sectional view along the diagonal line of one section 3 where the fisheye lens cut 2 is performed. As described above, one section 3 is first divided into two in the state shown by the center line P. Each of the sections 31 is further divided into a small section 31b, a small section 31a, and a small section 31c from the right side of the figure, and the other section 31 is similarly small from the right side. The section 31c, the small section 31a, and the small section 31b are divided in this order.

ここで、本発明では、上記にも説明したように小区画31bと小区画31cが小区画31aに対して対称形であることを利用して、夫々を180°回転させた状態として場所を入れ替えるものであり、その入れ替えが行われた状態を示すものが図3である。よって、図4に示すようにアウターレンズ1としての全体的な印象は、従来の魚眼レンズカット2が施されたものと大きく変わるものとなり、斬新な見栄えのアウターレンズ1となる。   Here, in the present invention, as described above, the small section 31b and the small section 31c are symmetrical with respect to the small section 31a. FIG. 3 shows a state in which the replacement is performed. Therefore, as shown in FIG. 4, the overall impression of the outer lens 1 is greatly different from that of the conventional fisheye lens cut 2, and the outer lens 1 has a novel appearance.

尚、本発明では上記の説明でも明らかなように、小区画31bと小区画31cとの配置の位置を変更したものであり、基本となる魚眼レンズカット2の曲率までも変更したものではないので、配光的にはそれ程に大きな変化を生じることはなく、この種のアウターレンズ1に要求される配光特性は充分に満足するものとなる。尚、実際の実施に当たっては、例えば、小区画31aの部分を幅方向に調整して円形から外れる形状とするなどの変更は自由である。   In the present invention, as apparent from the above description, the positions of the small sections 31b and 31c are changed, and the curvature of the basic fisheye lens cut 2 is not changed. The light distribution does not change so much, and the light distribution characteristics required for this type of outer lens 1 are sufficiently satisfied. In actual implementation, it is possible to freely change, for example, to adjust the portion of the small section 31a in the width direction so as to be out of a circle.

更には、上記のように、小区画31bと、小区画31cとの位置が入れ換えられたことで、従来の魚眼レンズカット2では、小区画間に段差を生じることがなく、よって、魚眼レンズカット2が施されている1つの区画3を大きくしようとすると、魚眼レンズカット2の半径も大きくなり、この結果、アウターレンズ1全体が厚いものと成っていたが、本発明によれば、段差の調整、各部の曲率の調整などで、厚さの増加を押さえることも可能であり、一層に模様を強調し、斬新なアウターレンズ1の形成が可能となる。   Further, as described above, the positions of the small section 31b and the small section 31c are interchanged, so that the conventional fisheye lens cut 2 does not cause a step between the small sections, and thus the fisheye lens cut 2 is When trying to enlarge one section 3 that has been applied, the radius of the fisheye lens cut 2 also increases, and as a result, the outer lens 1 as a whole is thicker. It is possible to suppress the increase in thickness by adjusting the curvature of the lens, and it is possible to further enhance the pattern and form a novel outer lens 1.

図5は、本発明による、アウターレンズ1を取付けた車両用灯具10を要部で示すものであり、光源の点灯時、不点灯時に係わらず小区画31a、31b、31cが形成する本発明独自の紋様がアウターレンズ1面に現れるものとなり、後続車の運転者などに今までにない斬新さと美観とを与えるものとなり、他車との相違も明らかなものとする。   FIG. 5 shows the vehicular lamp 10 with the outer lens 1 attached according to the present invention in a principal part, and the small section 31a, 31b, 31c is formed by the present invention regardless of whether the light source is turned on or not. Will appear on the outer lens 1 surface, giving the driver of the following vehicle a novelty and aesthetics that have never been seen before, and making the difference from other vehicles clear.

尚、本発明は車両用灯具10のアウターレンズ1に限られるものではなく、例えば、室内灯、街灯などのレンズとして利用しても良いものであることは云うまでもない。また、車両用灯具10のアウターレンズとして採用する場合においても、従来例で説明した魚眼レンズカット2の部分と、本発明のカットの部分とを模様状に組合わせるなどして、一層に見栄えにはえるアウターレンズ1とすることも自在である。   Needless to say, the present invention is not limited to the outer lens 1 of the vehicular lamp 10, and may be used as a lens for, for example, an indoor lamp or a street lamp. Further, even when it is adopted as an outer lens of the vehicular lamp 10, the fisheye lens cut 2 portion described in the conventional example and the cut portion of the present invention are combined in a pattern to make it look better. The outer lens 1 can be freely used.

本発明に係るアウターレンズの、1つの区画における分割状態を示す説明図である。It is explanatory drawing which shows the division | segmentation state in one division of the outer lens which concerns on this invention. 図1のA−A線に沿う断面図である。It is sectional drawing which follows the AA line of FIG. 本発明により小区画の入れ換えを行った後の完成状態を示す断面図である。It is sectional drawing which shows the completion state after replacing | exchanging the small division by this invention. 本発明に係るアウターレンズの、全体的な見え方を示す説明図である。It is explanatory drawing which shows the overall view of the outer lens which concerns on this invention. 本発明に係るアウターレンズを採用した車両灯灯具を示す説明図である。It is explanatory drawing which shows the vehicle lamp which employ | adopted the outer lens which concerns on this invention. 従来例を示す説明図である。It is explanatory drawing which shows a prior art example.

符号の説明Explanation of symbols

1…アウターレンズ
2…魚眼レンズカット
3…区画
31a、31b、31c…小区画
10…車両用灯具
DESCRIPTION OF SYMBOLS 1 ... Outer lens 2 ... Fish-eye lens cut 3 ... Section 31a, 31b, 31c ... Small section 10 ... Vehicle lamp

Claims (2)

配光形成用に魚眼レンズカットが採用されて成るアウターレンズにおいて、前記魚眼レンズカットは、夫々の区画に内接円を想定すると共に、該内接円の中心で垂直方向と水平方向とに四分割し、この四分割された各区画を更に前記内接円を、前記中心を囲む対角線を軸として反転させ、外側と内側とに同一形状となる外接部と内接部とを設定し、前記内接部と前記外接部とを、本来位置していた場所のレンズ面形状を保つ状態で入れ替えを行った区画の集合とされていることを特徴とするアウターレンズ。   In the outer lens in which a fish-eye lens cut is adopted for light distribution formation, the fish-eye lens cut assumes an inscribed circle in each section, and is divided into a vertical direction and a horizontal direction at the center of the inscribed circle. The inscribed circle is further inverted with respect to the inscribed circle, with the diagonal line surrounding the center as an axis, and the inscribed portion and the inscribed portion having the same shape are set on the outside and the inside, and the inscribed circle is set. The outer lens is characterized in that the part and the circumscribed part are set as a set of sections in which the lens surface shape of the place where the part is originally located is interchanged. 請求項1記載のアウターレンズを具備することを特徴とする車両用灯具。   A vehicular lamp comprising the outer lens according to claim 1.
JP2006006343A 2006-01-13 2006-01-13 Outer lens and vehicular lamp including the outer lens Expired - Fee Related JP4548845B2 (en)

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JP4548845B2 true JP4548845B2 (en) 2010-09-22

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0160402U (en) * 1987-10-12 1989-04-17
JPH0917208A (en) * 1995-06-30 1997-01-17 Koito Mfg Co Ltd Lens of headlamp for vehicle
JPH09237506A (en) * 1996-02-29 1997-09-09 Ichikoh Ind Ltd Lighting fixture for vehicle
JP2000149616A (en) * 1998-11-13 2000-05-30 Stanley Electric Co Ltd Lighting fixture for vehicle
JP2004265701A (en) * 2003-02-28 2004-09-24 Daihatsu Motor Co Ltd Lamp
JP2005190668A (en) * 2003-12-24 2005-07-14 Koito Mfg Co Ltd Vehicular lamp unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0160402U (en) * 1987-10-12 1989-04-17
JPH0917208A (en) * 1995-06-30 1997-01-17 Koito Mfg Co Ltd Lens of headlamp for vehicle
JPH09237506A (en) * 1996-02-29 1997-09-09 Ichikoh Ind Ltd Lighting fixture for vehicle
JP2000149616A (en) * 1998-11-13 2000-05-30 Stanley Electric Co Ltd Lighting fixture for vehicle
JP2004265701A (en) * 2003-02-28 2004-09-24 Daihatsu Motor Co Ltd Lamp
JP2005190668A (en) * 2003-12-24 2005-07-14 Koito Mfg Co Ltd Vehicular lamp unit

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