JPH02135601A - Signal lamp for vehicle - Google Patents

Signal lamp for vehicle

Info

Publication number
JPH02135601A
JPH02135601A JP63290454A JP29045488A JPH02135601A JP H02135601 A JPH02135601 A JP H02135601A JP 63290454 A JP63290454 A JP 63290454A JP 29045488 A JP29045488 A JP 29045488A JP H02135601 A JPH02135601 A JP H02135601A
Authority
JP
Japan
Prior art keywords
lens
light
prism
cuts
decreased
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
Application number
JP63290454A
Other languages
Japanese (ja)
Other versions
JPH053081B2 (en
Inventor
Haruo Teraoka
寺岡 春夫
Shuji Gotanda
五反田 修司
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.)
Mitsubishi Motors Corp
Stanley Electric Co Ltd
Original Assignee
Mitsubishi Motors Corp
Stanley Electric Co 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 Mitsubishi Motors Corp, Stanley Electric Co Ltd filed Critical Mitsubishi Motors Corp
Priority to JP63290454A priority Critical patent/JPH02135601A/en
Publication of JPH02135601A publication Critical patent/JPH02135601A/en
Publication of JPH053081B2 publication Critical patent/JPH053081B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

PURPOSE:To contrive traffic safety by preventing light from being reflected in such a manner that it may be regarded falsely as lighting of a lamp by providing lens cuts on a lens and then providing prism cuts thereon for refracting light upwards, the rate of the prism cuts being decreased in sequence from the lower part of the lens. CONSTITUTION:In a signal lamp 2 for vehicles a mirror face 2a in the form of a flat plate is formed, and lens cuts 3a-3f are applied to a lens 3 which is provided on the front face of a reflecting mirror 2, and the lens cuts 3a-3f divide the lens 3 into square blocks 3a-3f. Within the area upper than the block 3f, a spherical, normal fisheye lens is provided. A wedge-shaped prism 31a with its apex angle theta1 for refracting light vertically upwards by a predetermined angle is disposed in the block 3a, and an auxiliary prism 32a for refracting the light downwards is disposed at the upper end of the prism 31a. Each of the blocks 3b-3e is formed likewise, but the apex angles of prisms 31b-31e are decreased in sequence. Incident light is refracted upwards within a signal lamp 1 so that the rate of light reaching the mirror face 2a is decreased, and light reflected by the mirror face 2a and sent out via the lens 2 is refracted upwards by the same portion, so that the rate of light reaching the eyes of an observer is decreased.

Description

【発明の詳細な説明】[Detailed description of the invention] 【産業上の利用分野】[Industrial application field]

本発明は、例えば尾灯など自動車に装着される信号灯に
関するものである。
TECHNICAL FIELD The present invention relates to a signal light, such as a taillight, mounted on a motor vehicle.

【従来の技術】[Conventional technology]

従来のこの種の信号灯21の例を示すものが第4図であ
り、方形の、特に横長の信号灯21を回転放物面の反射
鏡22で形成したときには、この反射鏡22の下面に平
板状の部分22aを生じ、反射鏡22に施すアルミ蒸着
などの反射処理が前記した平板状の部分22aにも付着
するものとなり、昼間の非点灯時に前記信号灯21を観
視すると、外光が前記平板状の部分22aに反射して第
5図に示すようにレンズ面に光輝する部分、即ち疑似点
灯を生ずるものとなる。
FIG. 4 shows an example of a conventional signal light 21 of this kind. When a rectangular, particularly horizontally long, signal light 21 is formed of a paraboloid of revolution reflecting mirror 22, a flat plate-like structure is formed on the lower surface of this reflecting mirror 22. The reflection treatment such as aluminum vapor deposition applied to the reflector 22 also adheres to the above-mentioned flat plate-shaped part 22a, and when the signal light 21 is viewed during the daytime when it is not lit, external light is reflected onto the flat plate. The light is reflected by the shaped portion 22a, causing a shiny portion on the lens surface, ie, pseudo-lighting, as shown in FIG.

【発明が解決しようとする謀M】[The plot M that the invention attempts to solve]

前記した外光による疑似点灯は見苦しいものであるばか
りでなく、例えばこの信号灯21が制動灯で成るときに
は制動装置が操作されていると誤認され、事故の要因と
なる可能性を生ずる重大な問題点となり、この点を解決
するために前記平板状の部分22aに黒色塗装などが行
われているが、前記反射鏡22の部分との塗り分けのた
めにマスキングなどが必要であり、大変に手間を要し生
産性が低(なる問題点、或は前記したマスキング時に反
射鏡22の部分に損傷を与え歩留まりが低下する問題点
などを生ずるものとなり、これらの点の解決が課題とさ
れていた。 【11題を解決するための手段] 本発明は、前記した課題を解決するための具体釣手段と
して、反射鏡下面に平板状の鏡面が形成された車両用信
号灯において、該車両用信号灯のレン°ズのレンズカッ
トには下面から順次に度合いを減少する上向きに屈折さ
せるプリズムカットが重畳されていることを特徴とする
車両用信号灯を提供することで、前記した疑似点灯を生
ずることを無(して、前記従来の問題点を解決するもの
である。 【実 施 例] つぎに、本発明を図に示す一実施例に基づいて詳細に説
明する。 第1図に符号1で示すものは、本発明による車両用信号
灯(以下、信号灯と略称)であり、この信号灯1の反射
鏡2には従来例で説明したのと同様に平板状の鏡面2a
が形成されるものとなっていて、当然に外光の反射によ
り疑似点灯の可能性のあるものであるが、前記反射鏡2
の前面に設けられるレンズ3には本発明によるレンズカ
ットが施され、前記した疑似点灯を防止するものとされ
ている。 この種の信号灯1は通常には例えば尾灯/制動灯(スト
ップアンドテール)として使用され、施されるレンズカ
ットは図にも示すように方形の区画に分割されているも
のである。 ここで、説明を簡素化し理解を容易とするために本発明
を前記レンズ3の下辺のみに実施した例で説明し、前記
区画には下辺側から順次3a13bt3cと符号を付す
ものとする。 即ち、最下辺の第一列目の区画の符号は
全て3aであり、同じレンズカットが施されているもの
とし、区画3bは下辺から第二列目に位置する区画であ
り、この区画3bに属する夫々は同じレンズカットが施
されているものであり、同様なレンズカットは、この実
施例では区画3e1即ち第五列目までに渡り施されてい
る。 依って区画3f以上、即ち第六列目以上は球面に
よる通常の魚眼レンズとされている。 第2図は前記したレンズカットの設定手順を区画3aの
例で詳細に示すもので、先ず、区画3aには、この区画
3aが光を所定角度だけ垂直方向上向きに屈折するため
にθ□の頂角を持つ楔状のプリズム31aが仮想的に配
置される。 このとき、区画3a全体に前記プリズム3
1aを配置すると、この上に接して配置される区画3b
との間に段差を生ずるので、前記プリズム31aの上端
には下向きに屈折する補助プリズム32aを配置するこ
とが好ましい。 以上のようにして設けられた仮想的な、プリズム31a
と補助プリズム32aの表面は夫々凸曲面で覆われ、前
記した区画3f以上の通常の魚眼レンズ部分と形状的な
違和感を生じないようにされる。 このとき、前記プリズム31aの信号灯具1の取付状態
での水平方向への曲率および補助プリズム32aの表面
の垂直、水平方向への曲率は前記区画3f以上の魚眼レ
ンズに施された曲率と、はぼ同程度の曲率で良いが、前
記プリズム31aの垂直方向への曲率は前記した上方へ
屈折する効果を損なうことが無いように、低い曲率(後
出の第1表を参照)としておくことが好ましい6また、
以上のようにプリズム31aと補助プリズム32aの表
面を凸曲面で覆ったときには両表面の接続部に陵線を生
ずる場合があり、前記したように他の部分と違和感を生
ずるので、適宜に曲面で連続させて前記した陵線を生じ
ないようにすることが好ましい。 第3図は1以上の説明のようにして構成したレンズ3の
要部の垂直断面であり、区画3b1区画301区画3d
、区画3eとも前記区画3aと同様にして形成されるも
のであるが、前記プリズム31aに相当するプリズム3
1b〜31eの頂角が順次に減ぜられ、これにより順次
に上向きに屈折する角度を減するようにされ、前記説明
したように第六列目に至り、区画3f以降の通常の魚眼
レンズのレンズカットと接続するものとなっている。 このようにしたことで、前記鏡面2aに近接する区画3
a〜3eまでのレンズカットには光を上向きに屈折する
プリズムカットが重畳されているものとなる。 ここで、本発明が実際の特定の車種に実施されたときの
前記プリズム31a〜31eの頂角θ□の具体的な数値
を示すものが第1表であり、同表には同時に前記プリズ
ム31a〜31eの表面に形成される凸面の垂直方向へ
の曲率も半径の値として示しである。 以上のようにして構成されたレンズ3を反射鏡2と組合
せ、太陽光などの外光下で固視するときには、先ず入射
光は信号灯1の内部で上向きに屈折され、前記鏡面2a
に達する割合を減じて、この鏡面2aの光輝するのを少
な(シ、同時に鏡面2aからの前記レンズ2を介する射
出光は同じ部分で上向きに屈折され、固視者の視線中に
達することを減するものとする。 上記の作用により本発明の信号灯1は外光下においても
疑似点灯を生じないものとなる。 尚、前記した実施例は一例であり、例えば実施する列数
は五列に限るものでなく、また実施する位置も下辺に限
るものでない、要は疑似点灯の生じ易い位置に順次に度
合いを減するプリズムを重畳させ、光を固視方向以外に
屈折させて防止することに要旨があるものであり、上記
の条件を満足するものであるならば如何なる変更も自在
であることは云うまでもない。 【発明の効果] 以上に説明したように本発明により、レンズのレンズカ
ットに下面から順次に度合いを減少する上向きに屈折さ
せるプリズムカットを重畳したことで、方形の反射鏡に
生ずる鏡面に外光が反射して観者の視線中に達し疑似点
灯となる反射光を、観者の視線外である上方に屈折して
防止するものであり、見苦しさを無くすると伴に、例え
ば制動装置が操作されたなどの誤認を防止し交通安全の
向上に卓越した効果を奏するものである。
The false lighting caused by outside light is not only unsightly, but also poses a serious problem, for example, when the signal light 21 is a brake light, it may be mistaken as a braking device being operated, potentially causing an accident. Therefore, in order to solve this problem, the flat plate-shaped portion 22a is painted black, but masking is required to distinguish it from the reflective mirror 22, which is very time-consuming. This results in problems such as low productivity due to the high cost, or the above-mentioned problem of damaging the reflecting mirror 22 during masking and lowering the yield, and it has been a challenge to solve these problems. [Means for Solving Problem 11] The present invention provides a vehicle signal light in which a flat mirror surface is formed on the lower surface of a reflector, as a specific means for solving the above-mentioned problems. By providing a vehicle signal lamp characterized in that a prism cut that refracts the lens upward in decreasing degrees from the bottom surface is superimposed on the lens cut of the lens, the above-mentioned false lighting can be avoided. [Example] Next, the present invention will be explained in detail based on an example shown in the drawings. , is a vehicle signal light (hereinafter abbreviated as a signal light) according to the present invention, and the reflector 2 of this signal light 1 has a flat mirror surface 2a as described in the conventional example.
is formed, and of course there is a possibility of false lighting due to the reflection of external light, but the reflector 2
The lens 3 provided on the front surface of the lamp is cut according to the present invention to prevent the above-mentioned false lighting. This type of signal light 1 is usually used, for example, as a tail light/brake light (stop-and-tail), and the lens cut is divided into rectangular sections as shown in the figure. Here, in order to simplify the explanation and make it easier to understand, the present invention will be explained using an example in which the present invention is implemented only on the lower side of the lens 3, and the sections will be sequentially numbered 3a13bt3c from the lower side. That is, the codes of the sections in the first row on the bottom side are all 3a and the same lens cut is applied, and section 3b is located in the second column from the bottom side, and this section 3b has the code 3a. The same lens cuts are applied to each of the sections, and in this embodiment, the same lens cuts are applied up to the section 3e1, that is, the fifth row. Therefore, sections 3f and above, ie, the sixth row and above, are made into ordinary spherical fisheye lenses. FIG. 2 shows the above-mentioned lens cut setting procedure in detail using the example of the section 3a. First, the section 3a has an angle of θ□ in order to refract the light vertically upward by a predetermined angle. A wedge-shaped prism 31a having an apex angle is virtually arranged. At this time, the prism 3 covers the entire section 3a.
When 1a is placed, section 3b is placed in contact with this
Therefore, it is preferable to arrange an auxiliary prism 32a that refracts downward at the upper end of the prism 31a. Virtual prism 31a provided as described above
The surfaces of the auxiliary prism 32a and the auxiliary prism 32a are each covered with a convex curved surface, so as not to create a feeling of discomfort in shape with the normal fisheye lens portion above the section 3f. At this time, the curvature of the prism 31a in the horizontal direction when the signal lamp 1 is attached and the curvature of the surface of the auxiliary prism 32a in the vertical and horizontal directions are approximately the same as the curvature of the fisheye lens in the section 3f and above. The same degree of curvature may be sufficient, but it is preferable that the curvature of the prism 31a in the vertical direction be a low curvature (see Table 1 below) so as not to impair the above-mentioned upward refraction effect. 6 Also,
When the surfaces of the prism 31a and the auxiliary prism 32a are covered with a convex curved surface as described above, a ridge line may be formed at the connection part of both surfaces, and as mentioned above, this will cause a feeling of discomfort with other parts, so it is necessary to cover the surface with a curved surface as appropriate. It is preferable to prevent the above-mentioned ridge lines from occurring continuously. FIG. 3 is a vertical cross section of the main part of the lens 3 constructed as described above, section 3b1 section 301 section 3d.
, the section 3e is formed in the same manner as the section 3a, but the prism 3 corresponding to the prism 31a is
The apex angles of 1b to 31e are sequentially reduced, thereby sequentially reducing the angle of upward refraction, and as explained above, the sixth row is reached, and the normal fisheye lens from section 3f onwards. It is connected to the cut. By doing this, the section 3 adjacent to the mirror surface 2a
Prism cuts that refract light upward are superimposed on the lens cuts a to 3e. Here, Table 1 shows specific numerical values of the apex angles θ□ of the prisms 31a to 31e when the present invention is actually implemented in a specific vehicle type, and the table also includes the prisms 31a to 31e. The curvature in the vertical direction of the convex surface formed on the surface of ~31e is also shown as a radius value. When the lens 3 configured as described above is combined with the reflecting mirror 2 and viewed under external light such as sunlight, the incident light is first refracted upward inside the signal light 1, and the mirror surface 2a
At the same time, the light emitted from the mirror surface 2a through the lens 2 is refracted upward at the same portion and reaches the line of sight of the fixator. Due to the above-mentioned effect, the signal light 1 of the present invention does not cause false lighting even under outside light.The above-mentioned embodiment is an example, and the number of rows to be implemented may be five, for example. The present invention is not limited to this, and the position to be implemented is not limited to the lower side; the point is to superimpose prisms that gradually reduce the intensity at positions where pseudo-lighting is likely to occur, and to refract the light in a direction other than the fixation direction to prevent it. It goes without saying that any changes can be made as long as the gist is clear and the above conditions are satisfied. [Effects of the Invention] As explained above, the present invention enables the lens cut of the lens. By superimposing a prism cut that gradually decreases the degree of refraction upward from the bottom surface, outside light is reflected on the mirror surface of the square reflector, reaching the viewer's line of sight, and reducing the reflected light that causes false lighting. This prevents the light from being refracted upwards, which is out of the viewer's line of sight, and not only eliminates unsightliness, but also prevents misunderstandings, such as when a brake system has been operated, and has an outstanding effect on improving traffic safety. It is.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明に係る車両用信号灯の一実施例を要部で
示す正面図、第2図は同じ実施例の要部を拡大して示す
断面図、第3図は第1図の■−■線に沿う断面図、第4
図は従来例を示す斜視図、第5図は従来例に生ずる疑似
点灯を示す説明図である。 第4!!1 1・・・・車両用信号灯 2・・・・反射鏡 3・・・・レンズ 3a〜3e・・区画 31a〜31e・・プリズム 32a・・補助プリズム θ1・・・・頂角 第5!!I
FIG. 1 is a front view showing the main parts of an embodiment of a vehicle signal light according to the present invention, FIG. 2 is a cross-sectional view showing the main parts of the same embodiment on an enlarged scale, and FIG. - Sectional view along line ■, No. 4
The figure is a perspective view showing a conventional example, and FIG. 5 is an explanatory diagram showing pseudo lighting that occurs in the conventional example. Fourth! ! 1 1... Vehicle signal light 2... Reflector 3... Lenses 3a to 3e... Sections 31a to 31e... Prism 32a... Auxiliary prism θ1... Apex angle 5th! ! I

Claims (1)

【特許請求の範囲】[Claims] 反射鏡下面に平板状の鏡面が形成された車両用信号灯に
おいて、該車両用信号灯のレンズのレンズカットには下
面から順次に度合いを減少する上向きに屈折させるプリ
ズムカットが重畳されていることを特徴とする車両用信
号灯。
A vehicle signal light in which a flat mirror surface is formed on the lower surface of the reflector, characterized in that the lens cut of the lens of the vehicle signal light is superimposed with a prism cut that refracts the lens upward in decreasing degrees from the lower surface. Signal lights for vehicles.
JP63290454A 1988-11-17 1988-11-17 Signal lamp for vehicle Granted JPH02135601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63290454A JPH02135601A (en) 1988-11-17 1988-11-17 Signal lamp for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63290454A JPH02135601A (en) 1988-11-17 1988-11-17 Signal lamp for vehicle

Publications (2)

Publication Number Publication Date
JPH02135601A true JPH02135601A (en) 1990-05-24
JPH053081B2 JPH053081B2 (en) 1993-01-14

Family

ID=17756234

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63290454A Granted JPH02135601A (en) 1988-11-17 1988-11-17 Signal lamp for vehicle

Country Status (1)

Country Link
JP (1) JPH02135601A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013225404A (en) * 2012-04-20 2013-10-31 Ichikoh Ind Ltd Vehicle headlight

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4350996B2 (en) 2002-11-26 2009-10-28 日東電工株式会社 Organic electroluminescence device, surface light source and display device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013225404A (en) * 2012-04-20 2013-10-31 Ichikoh Ind Ltd Vehicle headlight

Also Published As

Publication number Publication date
JPH053081B2 (en) 1993-01-14

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