JPH02189802A - Head lamp for vehicle - Google Patents
Head lamp for vehicleInfo
- Publication number
- JPH02189802A JPH02189802A JP1005969A JP596989A JPH02189802A JP H02189802 A JPH02189802 A JP H02189802A JP 1005969 A JP1005969 A JP 1005969A JP 596989 A JP596989 A JP 596989A JP H02189802 A JPH02189802 A JP H02189802A
- Authority
- JP
- Japan
- Prior art keywords
- light
- light guide
- light source
- lens
- projection lens
- Prior art date
- 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.)
- Granted
Links
- 238000003780 insertion Methods 0.000 claims description 19
- 230000037431 insertion Effects 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 18
- 230000003287 optical effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000003760 hair shine Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001795 light effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
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
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/162—Incandescent light sources, e.g. filament or halogen lamps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/24—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
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/25—Projection lenses
- F21S41/255—Lenses with a front view of circular or truncated circular outline
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
【発明の詳細な説明】 本発明自動車用前照灯を以下の項目に従って説明する。[Detailed description of the invention] The automobile headlamp of the present invention will be explained according to the following items.
Ａ 産業上の利用分野
Ｂ 発明の概要
Ｃ３従来技術［第１０図コ
０３発明か解決しようとする課題［第１０図、第１１図
］
Ｅ４課題を解決するための手段
Ｆ、実施例［第１図乃至第９図コ
Ｆ−１，第１の実施例［第１図乃至第８図］ａ 投影部
ｂ 電球
Ｃ１遮光板
ｄ 投影レンズ
ｅ ランプボディ、レンズ
ｆ、導光体
ｇ 作用
Ｆ−２第２の実施例［第９図］
Ｇ４発明の効果
（Ａ 産業上の利用分野）
本発明は新規な自動車用前照灯に関する。詳しくは、反
射光を前方の集光部に集光させる反射鏡と該反射鏡の前
方に配置されその焦点か前記集光部近傍に位置された投
影レンズとを備えた投影部を該投影部より大きなランプ
ボディ内に配置した自動車用前照灯であって、点灯時に
、ランプボディと投影部との間の形状差に相当する部分
の大部分も光輝するようにして先行車輌のドライバーや
歩行者等が後続車等に関して錯覚を起すことかないよう
にかつ見栄えを良くした新規な自動車用前照灯を提供し
ようとするものである。A Industrial field of application B Summary of the invention C3 Prior art [Figure 10 C03 Problems to be solved by the invention [Figures 10 and 11] E4 Means for solving the problem Figures to Figures 9 F-1, First Example [Figures 1 to 8] a Projection part b Light bulb C1 light shielding plate d Projection lens e Lamp body, lens f, light guide g Function F-2 Second Embodiment [FIG. 9] Effects of the G4 Invention (A Field of Industrial Application) The present invention relates to a novel automobile headlamp. Specifically, the projection section includes a reflecting mirror that focuses reflected light onto a focusing section in front of the projecting section, and a projection lens that is arranged in front of the reflecting mirror and whose focal point is located near the focusing section. This is an automobile headlamp that is placed inside a larger lamp body, and when turned on, most of the part corresponding to the difference in shape between the lamp body and the projection part also shines, so that it can catch the driver of the preceding vehicle or pedestrians. The purpose of the present invention is to provide a novel headlamp for a vehicle that does not create any illusion regarding the following vehicle etc. and has an improved appearance.
（Ｂ 発明の概要）
本発明自動車用前照灯は、ランプボディ内にランプボデ
ィの前面開口部と投影部との間の形状差を埋める形状の
透明な板状をした導光体を配置し、導光体に形成された
挿通孔の開口周面が投影部の投影レンズの外周縁寄りの
面に対向して位置され、導光体の後面に前記挿通孔の開
口周面から入った光を前方に向けて反射する反射手段を
設け、これによって、点灯時に、投影部の投影レンズの
外周縁寄りの面から出射した光が導光体の挿通孔の開口
周面から導光体内に入り、後面の反射手段によって反射
されて前面の半反射手段を介して前方に出射されるよう
にして、導光体か光輝することによって、先行車輌のド
ライバーや歩行者等は後続する車輌あるいは通過する車
輌か両脇に前照灯を備えた乗用車以上の車輌であること
を認識することが出来るし、また、前照灯として見える
正面形状が大きくなって見栄えか良くなる。(B Summary of the Invention) The automobile headlamp of the present invention has a transparent plate-shaped light guide arranged in the lamp body to fill the difference in shape between the front opening of the lamp body and the projection part. , the opening peripheral surface of the insertion hole formed in the light guide is positioned opposite to the surface near the outer peripheral edge of the projection lens of the projection unit, and the light entering from the opening peripheral surface of the insertion hole to the rear surface of the light guide The light emitted from the surface near the outer periphery of the projection lens of the projection unit enters the light guide through the opening circumferential surface of the insertion hole of the light guide when the light is turned on. The light is reflected by the reflective means on the rear surface and emitted forward through the semi-reflective means on the front surface, and the light guide shines, allowing the driver or pedestrian of the preceding vehicle to pass or pass the following vehicle. It is possible to recognize that the vehicle is larger than a passenger car with headlights on both sides, and the front shape that can be seen as the headlights is enlarged, making it look better.
（Ｃ，従来技術）［第１０図］
反射光を前方の集光部に集光させる反射鏡と該反射鏡の
前方に配置されその焦点が前記集光部近傍に位置された
投影レンズとを備えた前照灯かある。(C, Prior Art) [Figure 10] A reflecting mirror that focuses reflected light onto a focusing section in front of it, and a projection lens that is placed in front of the reflecting mirror and whose focal point is located near the focusing section. There are equipped headlights.
このような前照灯はその配光パターンか非常にシャープ
な輪郭を有するのて、厳しい配光規格を満足させるのに
好適であり、自動車用の前照灯として優れている。Since such a headlamp has a light distribution pattern with a very sharp outline, it is suitable for satisfying strict light distribution standards and is excellent as a headlamp for automobiles.
しかしなから、このような前照灯はその出光面か非常に
小さいので、デサイン的に大型の前照灯や細長い前照灯
が好まれる傾向にある現在においては、外観的に好まれ
ないという問題かある。However, because the light emitting surface of such headlights is very small, it is said that they are not popular in terms of appearance in today's world where there is a tendency to prefer large headlights or elongated headlights in terms of design. There's a problem.
そこで、第１０図に示すように、反射光を前方の集光部
に集光させる反射鏡と該反射鏡の前方に配置されその焦
点が前記集光部近傍に位置された投影レンズとを備えた
部分ａを投影部としてこれより大きな輪郭、特に、前面
開口部の輪郭が大きなランプボディｂ内に配置し、該ラ
ンプボディｂの前面開口部をレンズＣて覆い、ランプボ
ディｂ内に前面か反射面とされたダミー板ｄを配置し、
該ダミー板ｄに形成した挿通孔ｅに投影部ａの前端部を
挿通した自動車用前照灯ｆが考えられている。Therefore, as shown in FIG. 10, a reflecting mirror for condensing the reflected light onto a condensing section in front, and a projection lens disposed in front of the reflecting mirror, the focal point of which is located near the condensing section, are provided. The projected portion a is placed in a lamp body b with a larger outline, especially a larger front opening, as a projection part, and the front opening of the lamp body b is covered with a lens C, and the front opening is placed inside the lamp body b. A dummy plate d is placed as a reflective surface,
An automobile headlamp f is considered in which the front end of the projection part a is inserted into the insertion hole e formed in the dummy plate d.
このような自動車用前照灯ｆによれば、昼間にあっては
、レンズＣを通してランプボディｂ内に入った外の光か
ダミー板ｄの前面で反射されて外へ戻されるので、前方
から見て投影部ａとそれ以外の部分との間の区別かつか
ず、大きな前照灯であるという印象を与えることかてき
る。According to such an automobile headlamp f, during the daytime, the outside light that enters the lamp body b through the lens C is reflected by the front surface of the dummy plate d and returned to the outside, so that light from the front When viewed, it is difficult to distinguish between the projection part a and other parts, giving the impression that it is a large headlamp.
（Ｄ 発明か解決しようとする課題）［第１０図、第１
１図］
ところで、上記した自動車用前照灯ｆにあっては、夜間
はダミー板ｄは光輝せす、投影部ａのみが光輝して見え
るので、先行者のドライバーや歩行者等がこれを見た場
合、第１１図に示すように、あたかも２台の自動二輪車
か並走しているかのように錯覚を起し、交通」二の決断
を下す場合、誤った情報に基づいて誤った決断をしてし
まう慣れがあり、交通の安全上きわめて問題であるし、
また、見栄えも悪い。(D Invention or problem to be solved) [Figure 10, 1
[Fig. 1] By the way, in the above-mentioned automobile headlight f, at night, the dummy plate d shines, and only the projection part a appears to shine, so drivers and pedestrians in the lead can see this. In this case, as shown in Figure 11, it creates an illusion as if two motorcycles are traveling side by side, and when making a traffic decision, it is easy to make a wrong decision based on incorrect information. People are used to doing this, and it is extremely problematic in terms of traffic safety.
It also looks bad.
挿通孔の開口周面を投影部の投影レンズの外周縁寄りの
面に対向させると共に、導光体の後面に前記挿通孔の開
口周面から入った光を前方に向けて反射する反射手段を
設けたものである。The opening peripheral surface of the insertion hole is arranged to face a surface near the outer peripheral edge of the projection lens of the projection unit, and a reflecting means is provided on the rear surface of the light guide to reflect the light that has entered from the opening peripheral surface of the insertion hole toward the front. It was established.
従って、本発明自動車用前照灯にあっては、投影部の投
影レンズの外周縁寄りの面から出射し挿通孔の開口周面
から導光体内に入った光が後面の反則手段て前方に向っ
て反射されるのて、導光体が光輝して見え、そのために
、導光体の正面から見た面積に相当した大きさの前照灯
として視認され、これによりて、見栄えが良好になると
共に、先行車輌のドライバーや歩行者等が後続車に関し
て≦１１覚を起すことがないようにすることかできる。Therefore, in the automobile headlamp of the present invention, the light that is emitted from the surface near the outer periphery of the projection lens of the projection part and enters the light guide from the opening periphery of the insertion hole is directed forward by the deflection means on the rear surface. The light guide appears to shine as it is reflected towards the front, and is therefore visually recognized as a headlight whose size corresponds to the area seen from the front of the light guide, resulting in a good appearance. At the same time, it is possible to prevent the driver of the preceding vehicle, pedestrians, etc. from becoming aware of the following vehicle.
（Ｅ、課題を解決するための手段）
そこで、本発明自動車用前照灯は、上記した課題を解決
するために、投影部の前端部とランプボディの前面開口
部との間の形状差を埋める導光体をランプボディ内に配
置し、導光体に形成された（Ｆ、実施例）［第１図乃至
第９図コ
以下に、本発明自動車用前照灯の詳細を図示した実施例
に従って説明する。(E. Means for Solving the Problems) Therefore, in order to solve the above-mentioned problems, the automobile headlamp of the present invention reduces the shape difference between the front end of the projection part and the front opening of the lamp body. A buried light guide is placed inside the lamp body and formed in the light guide (F, Example) Let's explain by following an example.
（Ｆ−１第１の実施例）［第１図乃至第８図］
第１図乃至第８図は本発明自動車用前照灯の第１の実施
例１を示すものである。(F-1 First Embodiment) [Figs. 1 to 8] Figs. 1 to 8 show a first embodiment 1 of the automobile headlamp of the present invention.
（ａ 投影部）
２は投影部であり、反射鏡と電球と遮光板と投影レンズ
とから成る。(a Projection Section) 2 is a projection section, which is composed of a reflecting mirror, a light bulb, a light shielding plate, and a projection lens.
反射鏡３は反射光を前方の集光部に集光させる反射面４
を有するもので、例えば、放物線−楕円複合面が使用で
きる。ここで、放物線−楕円複合面とは水平断面で放物
線を為し、垂直断面で楕円を為し、放物線の焦点と楕円
の第１焦点とが同の点Ｆ（以下、「焦点」と云う。）に
あり、そして、軸ｘ−ｘ（以下、「光軸」と云う。）か
一致している面である。従って、上記焦点Ｆに光源を配
置すると、該光源から発し反射面４で反射された光５．
５、・・・は、水平方向ては光軸ｘ−ｘに平行な光束と
なり、垂直方向では楕円の第２焦点で集光する。従りて
、上記反射光５．５、・・・は楕円の第２焦点で光軸ｘ
−ｘに直角に交差し水平に延びる線Ｆ′（以下、「集光
部」と云う。）て集光する。従って、この反射光５．５
、・・・を集光部Ｆ′の稍前または稍後て光軸ｘ−ｘに
垂直な面で切断すると該反射光５．５、・・・による光
のまとまりは水平方向に長い略長方形状のパターン６を
呈する。The reflecting mirror 3 has a reflecting surface 4 that focuses the reflected light onto a focusing section in front of it.
For example, a parabolic-elliptic composite surface can be used. Here, the parabola-ellipse compound surface forms a parabola in the horizontal cross section, an ellipse in the vertical cross section, and the focal point of the parabola and the first focal point of the ellipse are the same point F (hereinafter referred to as the "focal point"). ) and coincides with the axis xx (hereinafter referred to as the "optical axis"). Therefore, when a light source is placed at the focal point F, the light 5. emitted from the light source and reflected by the reflective surface 4.
5, . . . are light beams parallel to the optical axis x-x in the horizontal direction, and are condensed at the second focal point of the ellipse in the vertical direction. Therefore, the reflected lights 5.5, . . . are at the second focal point of the ellipse and the optical axis x
The light is focused on a line F' (hereinafter referred to as a "condensing section") that intersects at right angles to -x and extends horizontally. Therefore, this reflected light 5.5
,... is cut at a plane perpendicular to the optical axis x-x just before or after the condensing part F', the bundle of reflected light 5.5,... becomes a substantially rectangular shape that is elongated in the horizontal direction. A pattern 6 is shown.
尚、反射鏡の反射面は放物線−楕円複合面に限らず、反
射光を前方の集光部に集光させる性質を有するものであ
れはどのようなものでも良い。具体的には、所望する配
光パターンによって異なる。例えは、回転楕円とか楕円
を変形させた面等種々のものか使用可能である。Incidentally, the reflecting surface of the reflecting mirror is not limited to a parabolic-elliptical compound surface, but may be any surface as long as it has the property of condensing the reflected light onto the front condensing section. Specifically, it varies depending on the desired light distribution pattern. For example, various objects such as a spheroid, a surface obtained by deforming an ellipse, etc. can be used.
（ｂ 電球）
７は上記反射鏡３に取着された電球であり、そのガラス
球８の中にはフィラメント９が封入されており、該フィ
ラメント９は前記反射面４の焦点Ｆに配置されている。(b Light bulb) 7 is a light bulb attached to the reflecting mirror 3, and a filament 9 is enclosed in the glass bulb 8, and the filament 9 is placed at the focal point F of the reflecting surface 4. There is.
１０はガラス球８の前端部に塗布された遮光膜であり、
該遮光膜１０によってフィラメント９からの直射光か前
方に照射されないようになっている。10 is a light shielding film applied to the front end of the glass bulb 8;
The light shielding film 10 prevents direct light from the filament 9 from being irradiated forward.
（Ｃ遮光板）
１１は遮光板であり、その上縁、即ち、遮光縁１２か上
記集光部Ｆ′の近傍に上記集光パターン６の下方の一部
を遮るように位置されている。(C Light-shielding plate) Reference numeral 11 denotes a light-shielding plate, which is positioned at its upper edge, that is, the light-shielding edge 12, or near the light-condensing portion F' so as to block a portion of the lower part of the light-condensing pattern 6.
（ｄ 投影レンズ）
１３は遮光板１１の前方に配置された投影レンズであり
、後面が略平面で前面が凸曲面となった凸レンズ状をし
ている。そして、該投影レンズ１３の焦点Ｆｅは遮光板
１１の遮光縁１２」−に位置している。しかして、この
投影レンズ１３によって下方部が遮光板１１によってカ
ットされた前記集光パターン６か前方に倒立像として投
影される。(d Projection Lens) A projection lens 13 is disposed in front of the light shielding plate 11, and has a convex lens shape with a substantially flat rear surface and a convex curved front surface. The focal point Fe of the projection lens 13 is located at the light-shielding edge 12''- of the light-shielding plate 11. The projection lens 13 projects the condensing pattern 6, the lower part of which is cut by the light shielding plate 11, forward as an inverted image.
尚、１４は円筒体であり、反射鏡３の前端部に外嵌する
ように取着され、かつ、この円筒体１４の前端部に投影
レンズ１３か支持さねてい（ｅ ランプボディ、レンズ
）
１５はランプボディてあり、正面から見て水平方向に長
い長方形をしており、前方に向って開口した四部１６を
有している。Note that 14 is a cylindrical body, which is attached to the front end of the reflecting mirror 3 so as to fit externally, and the projection lens 13 is supported on the front end of the cylindrical body 14 (e lamp body, lens). Reference numeral 15 denotes a lamp body, which has a horizontally long rectangular shape when viewed from the front, and has four parts 16 that open toward the front.
そして、このランプボディ１５の中央部に前記投影部２
か支持されている。The projection section 2 is placed in the center of the lamp body 15.
or supported.
１７はレンズであり、ランプボディ１５にその前面開口
部１８を覆うように取着されている。A lens 17 is attached to the lamp body 15 so as to cover the front opening 18 thereof.
（ｆ 導光体）
１９は透明な材料、例えは、透明な合成樹脂で形成され
た導光体であり、板状をしており、正面から見てランプ
ボディ１５の前面開口部１８を略覆う大きさをしている
。(f Light guide) 19 is a light guide made of a transparent material, for example, a transparent synthetic resin, and has a plate shape, and when viewed from the front, the front opening 18 of the lamp body 15 is approximately the same as the light guide 19. It is large enough to cover.
２０は導光体１９の略中央部に形成された挿通孔てあり
、該挿通孔２０の開口周面２１は前記投影レンズ１３の
外周縁寄りの円環状に延びた部分＋３ａに対向している
。Reference numeral 20 denotes an insertion hole formed approximately at the center of the light guide 19, and the opening peripheral surface 21 of the insertion hole 20 faces the annularly extending portion +3a near the outer peripheral edge of the projection lens 13. .
そして、該導光体１９の後面には円錐状をした点刻２２
．２２、・・・か多数形成されている。On the rear surface of the light guide 19, a conical stipple 22 is provided.
．． 22, . . . are formed in large numbers.
（ｇ 作用）
しかして、上記自動車用前照灯１にあっては、電球７か
点灯すると、前述したように、反射光５．５、・・・が
投影レンズ１３によって前方へ投影される。(g Effect) In the automobile headlamp 1, when the light bulb 7 is turned on, the reflected light 5.5, . . . is projected forward by the projection lens 13, as described above.
そして、投影レンズ１３から出射する光５．５、・・・
の光度分布を光軸に沿う断面で見ると第６図に示ず２３
のようになり、投影レンズ１３の外周縁寄りの部分１３
ａから出る光５′５′、・・・かずい分とある。そして
、この部分１、３ ａから漏れた光５′、５′、・・・
か導光体１９の挿通孔２０の開口周面２１から導光体１
９内に入射し、エツジライト効果により導光体１９内全
体に行き亘る。そして、これら光５′５′、・・・のう
ち、後面の点刻２２．２２、・・の内面て反射されたも
のか前方へ出射される１ま
ため、前方から見て、レンズ１７の内側全体か光輝して
見える。Then, the light 5.5, which is emitted from the projection lens 13,...
When looking at the luminous intensity distribution in a cross section along the optical axis, it is not shown in Figure 6.23
The part 13 near the outer edge of the projection lens 13
The amount of light emitted from a is 5'5'... And light 5', 5',... leaked from these parts 1, 3a.
From the opening peripheral surface 21 of the insertion hole 20 of the light guide 19 to the light guide 1
The light enters into the light guide 19 and spreads throughout the light guide 19 due to the edge light effect. Of these lights 5', 5', . . ., some of them are reflected by the inner surface of the dots 22, 22, . The entire inside appears to be shining.
尚、投影レンズ１３の外面のうち側方へ光５．５ 、・
・・か漏れる部分＋３ａは光５′、５′、・・・かより
出易くするために小さな凹凸を付した粗面部としても良
い。It should be noted that light 5.5, . . .
. . The leaking portion +3a may be a rough surface portion with small irregularities to make it easier for the light 5', 5', . . . to exit.
また、導光体１９の受光面２１も投影レンズ１３の部分
＋３ａから出て来る光５′、５′・・をより受り入れ易
くするために、該光５′５′、・・・の進行方向に対し
て略垂直な面２１Ａ（第７図参照）としたり、あるいは
、凹曲面２１ Ｂ （Ｍ８図参照）としても良い。Further, the light receiving surface 21 of the light guide 19 is also designed to more easily receive the lights 5', 5', . . . coming out from the portion +3a of the projection lens 13. The surface 21A (see FIG. 7) may be substantially perpendicular to the traveling direction, or the concave curved surface 21B (see FIG. M8) may be used.
（Ｆ−２第２の実施例）［第９図］
第９図は本発明自動車用前照灯の第２の実施例ＩＡを示
すものである。(F-2 Second Embodiment) [FIG. 9] FIG. 9 shows a second embodiment IA of the automobile headlamp of the present invention.
この第２の実施例に係る自動車用前照灯ＩＡか前記第１
の実施例に係る自動車用前照灯１と異なるのは電球たり
であるのて、該異なる部分についてのみ詳細に説明し、
その他の部分については、第１の実施例１における同様
の部分にイ」シた符号と同し符号を付して説明を省略す
る。The automobile headlamp IA according to this second embodiment is
Since the only difference from the automobile headlamp 1 according to the embodiment is the light bulb, only the different parts will be explained in detail.
The other parts are designated by the same reference numerals as the same parts in the first embodiment, and the explanation thereof will be omitted.
電球７Ａは反射面４の焦点Ｆに配置されるフィラメント
９の稍下方にもう一つのフィラメント２４を有している
。このフィラメント２４はクリアランス用であり、その
輝度は前記フィラメント９より大分低くなっている。The light bulb 7A has another filament 24 slightly below the filament 9 located at the focal point F of the reflective surface 4. This filament 24 is used for clearance, and its brightness is much lower than that of the filament 9.
そして、クリアランス用フィラメント２４か点灯すると
、その輝度はフィラメント９の点灯時より低いか、フィ
ラメント２４は焦点Ｆの稍下方に位置しているため、そ
の光２５．２５、・・・は遮光板１１によって遮られる
ことは殆ど無く、略全部の光が投影レンズ１３から出射
する。従って、投影レンズ１３の外周縁寄りの部分１３
ａからはその全周から略号遍無く光か出射し、そして、
それら光か導光体１９内に受は入れられるため、前方か
ら見ると導光体１９全体が平均的に光って見える。Then, when the clearance filament 24 is lit, its brightness is lower than when the filament 9 is lit, or the filament 24 is located slightly below the focal point F, so the light 25, 25, ... is transmitted to the light shielding plate 11. Almost all of the light is emitted from the projection lens 13 without being blocked by the projection lens 13. Therefore, the portion 13 near the outer peripheral edge of the projection lens 13
From a, light is emitted uniformly from its entire circumference, and,
Since these lights are received in the light guide 19, the entire light guide 19 appears to be shining evenly when viewed from the front.
従って、フィラメント２４の点灯によりクリアランスラ
ンプとしての機能を効果的に果すことになる。Therefore, by lighting the filament 24, it effectively functions as a clearance lamp.
（Ｇ 発明の効果）
以上に記載したところから明らかなとおり、本発明自動
車用前照灯は、光源と該光源からの光を反射して前方の
集光部に集光させる反射鏡と該反射鏡の前方に配置され
その焦点か前記集光部近傍に位置された投影レンズとを
備えた投影部と、前方に開口されると共に内部に前記投
影部が配置されたランプボディと、該ランプボディの前
面開口部を覆ったレンズと、ランプボディ内に配置され
た導光体とから成り、導光体は、透明な板状体でランプ
ボディの前面間口部を略覆う形状に形成されており、前
記投影部の投影レンズが位置される挿通孔が形成され、
該挿通孔の開口周面か前記投影レンズの外周縁寄りの面
に対向して位置され、後面に前記挿通孔の開口周面から
入った光を前方に向けて反射する反射手段を有し、前記
投影レンズの外周縁寄りの面から出射した光か導光体の
挿通孔の開口周面から導光体内に入り、後面の反射手段
によって反射されて前方に出射されることを特徴とする
。(G Effect of the Invention) As is clear from the above description, the automobile headlamp of the present invention comprises a light source, a reflector that reflects the light from the light source and focuses it on a condensing section in front, and the reflector. a projection section including a projection lens disposed in front of a mirror and whose focal point is located near the condensing section; a lamp body having an opening in the front and in which the projection section is disposed; and the lamp body. It consists of a lens that covers the front opening of the lamp body, and a light guide placed inside the lamp body.The light guide is a transparent plate shaped body that substantially covers the front opening of the lamp body. , an insertion hole is formed in which a projection lens of the projection unit is positioned;
The reflecting means is located opposite the opening peripheral surface of the insertion hole or the surface near the outer peripheral edge of the projection lens, and has a reflecting means on the rear surface that reflects light that has entered from the opening peripheral surface of the insertion hole toward the front; The light emitted from the surface near the outer peripheral edge of the projection lens enters the light guide through the opening circumferential surface of the insertion hole of the light guide, is reflected by the reflection means on the rear surface, and is emitted forward.
従って、本発明自動車用前照灯にあっては、点灯中は、
投影部の投影レンズの外周縁寄りの面から出射し挿通孔
の開口周面から導光体内に入った光が後面の反射手段で
前方に向って反射されるので、導光体か光輝して見え、
そのために、導光体の正面から見た面積に相当した大き
さの前照灯として視認され、これによって、先行車輌の
ドライバーや歩行者等が後続車に関して錯覚を起すこと
がないようにすることができ、また、見栄えも向上する
。Therefore, in the automobile headlamp of the present invention, while it is turned on,
The light that is emitted from the surface near the outer edge of the projection lens of the projection unit and enters the light guide from the opening surface of the insertion hole is reflected forward by the reflection means on the rear surface, causing the light guide to shine. I see,
To this end, the light guide is visually recognized as a headlight whose size corresponds to the area seen from the front, so that the driver of the preceding vehicle, pedestrians, etc. do not have any illusions about the following vehicle. This also improves the appearance.
その他上記各実施例に示した構成は本発明の具体的適用
例を例示したものに過きず、これらによって本発明の技
術的範囲が限定的に解釈されるものではない。The other configurations shown in the above embodiments are merely illustrative of specific application examples of the present invention, and the technical scope of the present invention should not be construed as limited by these.
第１図乃至第８図は本発明自動車用前照灯の第１の実施
例を示すもので、第１図は正面図、第２図は第１図のＩ
Ｉ−ＩＩ線に沿う断面図、第３図は第１図のＩＩＩ−Ｉ
ＩＩ線に沿う断面図、第４図は投影部の拡大概略斜視図
、第５図は作用を示す要部の拡大断面図、第６図は投影
部の投影の光度分布を示す図、第７図及び第８図は各別
の変形例を示す要部の断面図、第９図は本発明自動車用
前照灯の第２の実施例を示す縦断面図、第１０図は従来
の自動車用前照灯の一例を示す縦断面図、第１１図は第
１０図に示した従来の自動車用前照灯の有する問題点を
示す正面図である。
符号の説明
１・・・自動車用前照灯、 ２・・・投影部、３・・
・反射鏡、
５′・・・投影レンズの外＋Ａ縁寄りの面から出射した
光、
９・・・光源、 １１・・・遮光板、１３・・・投影
レンズ、
１３ａ・・・投影レンズの外周縁寄りの面、１５・・・
ランプボディ、
１７・・・レンズ、 １８・・・前面開口部、１９・
・・導光体、 ２０・・・挿通孔、２１・・・開口周
面、
２２・・・反射手段（点刻）、
２１Ａ・・・開口周面、
２１Ｂ・・・開口周面、
ＩＡ・・・自動車用前照灯、
２４・・・光源、 Ｆ′・・・集光部、ＦＣ・・・投
影レンズの焦点
出 願 人 株式会社小糸製作所1 to 8 show a first embodiment of the automobile headlamp of the present invention, FIG. 1 is a front view, and FIG. 2 is an I
A sectional view taken along line I-II, FIG. 3 is III-I in FIG.
4 is an enlarged schematic perspective view of the projection section, FIG. 5 is an enlarged sectional view of the main part showing the action, FIG. 6 is a diagram showing the luminous intensity distribution of projection of the projection section, and FIG. 8 and 8 are sectional views of main parts showing different modifications, FIG. 9 is a longitudinal sectional view showing a second embodiment of the automobile headlamp of the present invention, and FIG. 10 is a conventional automobile headlamp. FIG. 11 is a longitudinal cross-sectional view showing an example of a headlamp, and is a front view showing problems with the conventional automobile headlamp shown in FIG. 10. Explanation of symbols 1... Automobile headlight, 2... Projection part, 3...
・Reflector, 5'...Light emitted from the surface near the outside +A edge of the projection lens, 9...Light source, 11...Shade plate, 13...Projection lens, 13a...Projection lens Surface near the outer edge, 15...
Lamp body, 17... Lens, 18... Front opening, 19.
...Light guide, 20...Through hole, 21...Aperture circumferential surface, 22...Reflection means (stippling), 21A...Aperture circumferential surface, 21B...Aperture circumferential surface, IA・...Automotive headlamp, 24...Light source, F'...Concentrator, FC...Focus of projection lens Applicant: Koito Seisakusho Co., Ltd.
Claims (3)
集光させる反射鏡と該反射鏡の前方に配置されその焦点
が前記集光部近傍に位置された投影レンズとを備えた投
影部と、前方に開口されると共に内部に前記投影部が配
置されたランプボディと、該ランプボディの前面開口部
を覆ったレンズと、ランプボディ内に配置された導光体
とから成り、導光体は、透明な板状体でランプボディの
前面開口部を略覆う形状に形成されており、前記投影部
の投影レンズが位置される挿通孔が形成され、該挿通孔
の開口周面が前記投影レンズの外周縁寄りの面に対向し
て位置され、後面に前記挿通孔の開口周面から入った光
を前方に向けて反射する反射手段を有し、前記投影レン
ズの外周縁寄りの面から出射した光が導光体の挿通孔の
開口周面から導光体内に入り、後面の反射手段によって
反射されて前方に出射されることを特徴とする自動車用
前照灯(1) A light source, a reflecting mirror that reflects the light from the light source and focuses it on a focusing section in front, and a projection lens that is placed in front of the reflecting mirror and whose focal point is located near the focusing section. a lamp body having a front opening and in which the projection part is disposed, a lens covering the front opening of the lamp body, and a light guide disposed within the lamp body. The light guide is a transparent plate-like body formed in a shape that substantially covers the front opening of the lamp body, and has an insertion hole in which the projection lens of the projection unit is positioned, and an opening of the insertion hole. The peripheral surface is located opposite to the surface near the outer peripheral edge of the projection lens, and the rear surface has a reflecting means for reflecting the light entering from the opening peripheral surface of the insertion hole toward the front, and the outer peripheral surface of the projection lens An automobile headlamp characterized in that light emitted from a surface near the periphery enters the light guide through the opening circumferential surface of the insertion hole of the light guide, is reflected by a reflecting means on the rear surface, and is emitted forward.
の範囲第１項記載の自動車用前照灯(2) A headlamp for an automobile according to claim 1, characterized in that the reflecting means is a dot.
光源の集光部近傍に該光源からの光の一部を遮り他方の
光源からの光は殆ど遮らない遮光板を設け、他方の光源
の輝度を一方の光源の輝度よりかなり小さくして該他方
の光源の点灯によりクリアランスランプの機能を果すよ
うにしたことを特徴とする特許請求の範囲第１項又は第
２項記載の自動車用前照灯(3) having two light sources with different condensing parts, and providing a light shielding plate near the condensing part of one light source that blocks part of the light from the light source but hardly blocks the light from the other light source; Claim 1 or 2, characterized in that the brightness of the other light source is considerably lower than the brightness of one light source so that the function of a clearance lamp is achieved by lighting the other light source. automotive headlights
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1005969A JPH0766684B2 (en) | 1989-01-17 | 1989-01-17 | Automotive headlights |
| US07/369,995 US4949226A (en) | 1988-06-24 | 1989-06-23 | Projector-type lighting device of expanded outline appearance for use as a vehicular headlamp or the like |
| GB8914597A GB2222241B (en) | 1988-06-24 | 1989-06-26 | Lighting device of expanded outline appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1005969A JPH0766684B2 (en) | 1989-01-17 | 1989-01-17 | Automotive headlights |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02189802A true JPH02189802A (en) | 1990-07-25 |
| JPH0766684B2 JPH0766684B2 (en) | 1995-07-19 |
Family
ID=11625695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1005969A Expired - Fee Related JPH0766684B2 (en) | 1988-06-24 | 1989-01-17 | Automotive headlights |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0766684B2 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5450294A (en) * | 1992-08-29 | 1995-09-12 | Robert Bosch Gmbh | Headlight for vehicles |
| NL1008523C2 (en) * | 1998-03-06 | 1999-09-07 | Spanninga Metaal | Tail light. |
| US6910791B2 (en) | 2002-03-15 | 2005-06-28 | Stanley Electric Co., Ltd. | Headlight |
| JP2007035467A (en) * | 2005-07-27 | 2007-02-08 | Koito Mfg Co Ltd | Vehicular head lamp |
| JP2010228567A (en) * | 2009-03-26 | 2010-10-14 | Panasonic Electric Works Co Ltd | Luminaire |
-
1989
- 1989-01-17 JP JP1005969A patent/JPH0766684B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5450294A (en) * | 1992-08-29 | 1995-09-12 | Robert Bosch Gmbh | Headlight for vehicles |
| NL1008523C2 (en) * | 1998-03-06 | 1999-09-07 | Spanninga Metaal | Tail light. |
| EP0940331A1 (en) * | 1998-03-06 | 1999-09-08 | Spanninga Metaal B.V. | Rear light |
| US6910791B2 (en) | 2002-03-15 | 2005-06-28 | Stanley Electric Co., Ltd. | Headlight |
| JP2007035467A (en) * | 2005-07-27 | 2007-02-08 | Koito Mfg Co Ltd | Vehicular head lamp |
| JP4579078B2 (en) * | 2005-07-27 | 2010-11-10 | 株式会社小糸製作所 | Vehicle headlamp |
| JP2010228567A (en) * | 2009-03-26 | 2010-10-14 | Panasonic Electric Works Co Ltd | Luminaire |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0766684B2 (en) | 1995-07-19 |
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