JPH07262803A - Lens for headlamp - Google Patents

Lens for headlamp

Info

Publication number
JPH07262803A
JPH07262803A JP6072929A JP7292994A JPH07262803A JP H07262803 A JPH07262803 A JP H07262803A JP 6072929 A JP6072929 A JP 6072929A JP 7292994 A JP7292994 A JP 7292994A JP H07262803 A JPH07262803 A JP H07262803A
Authority
JP
Japan
Prior art keywords
lens
headlamp
leg
cut
viewer
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
JP6072929A
Other languages
Japanese (ja)
Other versions
JP2871453B2 (en
Inventor
Shigeo Suzuki
重夫 鈴木
Makio Matsuzaki
真希雄 松崎
Hide Sakayanai
秀 坂谷内
Kenji Ono
健二 小野
Takehiro Umetsu
武広 梅津
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.)
Stanley Electric Co Ltd
Toyota Motor Corp
Original Assignee
Stanley Electric Co Ltd
Toyota Motor Corp
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 Stanley Electric Co Ltd, Toyota Motor Corp filed Critical Stanley Electric Co Ltd
Priority to JP6072929A priority Critical patent/JP2871453B2/en
Publication of JPH07262803A publication Critical patent/JPH07262803A/en
Application granted granted Critical
Publication of JP2871453B2 publication Critical patent/JP2871453B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To prevent a feeling of physical disorder of a viewer at a low cost, and to improve the fine appearance of the headlamp, by applying a total reflection lens cut to the inner surface of the leg of a lens for headlamp so as to prevent the permeation of the line of sight of the viewer through the leg. CONSTITUTION:At the front side opening of a housing 13 having a light source 12 and a reflecting mirror 11, a lens for headlamp 1 wherein a lens cut for reflecting light diffusion is applied to the lens surface 2 is installed through a leg 3, so as to obtain a headlamp 10. In the above lens for headlamp 1, a total reflection cut is applied on the inner surface 31a of at least one side of the leg 3, the lower side leg, for example. As a result, it is prevented that the line of sight S of a viewer permeates the leg 31, and the viewer cannot see through a substance such as a bumper 20 at the rear surface side. Consequently, it is not necessary to apply a paint and the like to the back side of the leg 31b, and the lens surface 2 seems just like to be colored, so as to prevent a fine appearance of the headlamp 10 from being impaired.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は自動車の前照灯に関する
ものであり、詳細には前記前照灯のレンズの構成に係る
ものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle headlight, and more particularly to the construction of a lens of the headlight.

【0002】[0002]

【従来の技術】従来のこの種の前照灯用レンズ90の構
成の例を示すものが図4であり、この前照灯用レンズ9
0は、前照灯10中において、反射鏡11で反射され略
平行光線とされた光源12からの光に適宜な配光特性を
与える目的と、前記反射鏡11および光源12などを雨
水などから保護する目的とで設けられるものである。
2. Description of the Related Art FIG. 4 shows an example of the configuration of a conventional headlamp lens 90 of this type.
0 is for the purpose of giving appropriate light distribution characteristics to the light from the light source 12 which is reflected by the reflecting mirror 11 and is made into a substantially parallel light beam in the headlight 10, and the reflecting mirror 11 and the light source 12 are protected from rainwater or the like It is provided for the purpose of protection.

【0003】上記の目的に沿うために、前記前照灯用レ
ンズ90には前記反射鏡11からの反射光を拡散するレ
ンズカット91aが施されたレンズ面91と、この前照
灯用レンズ90をハウジング13に取付けるための脚部
92とで構成され、前記脚部92には上向光を拡散させ
るなどの目的で、この前照灯用レンズ90の成形時の型
抜き方向に沿う縦筋目ローレット92aが施されている
のが通常である。
In order to meet the above-mentioned purpose, the headlight lens 90 is provided with a lens surface 91 provided with a lens cut 91a for diffusing the light reflected from the reflecting mirror 11, and the headlight lens 90. And a leg portion 92 for attaching to the housing 13, and for the purpose of diffusing upward light and the like, the leg portion 92 has a vertical striation along the die cutting direction at the time of molding of the headlamp lens 90. The knurl 92a is usually applied.

【0004】尚、近来では前記反射鏡11に放物柱面あ
るいは自由曲面などが採用されて反射鏡11自体で配光
特性を設定することが可能な場合もあり、このような場
合には前記レンズ面91からレンズカット91aが省略
されて、レンズ面91が殆ど素通し状となることもあ
る。
In recent years, a parabolic column surface or a free-form surface may be adopted for the reflecting mirror 11 so that the light distribution characteristic can be set by the reflecting mirror 11 itself. The lens cut 91a may be omitted from the lens surface 91, and the lens surface 91 may be almost transparent.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、前記し
た従来の前照灯用レンズ90、特にレンズカット91a
が省略されてレンズ面91が素通し状態となった前照灯
用レンズ90においては、図示のように車体色と同色に
塗装されたバンパ20が前記脚部92に近接して設けら
れている場合などには、レンズ面91を透過して前記バ
ンパ20が観視され、恰もレンズ面が車体色に着色して
いるように見えて美観を損なう問題点を生じていた。
However, the above-described conventional lens 90 for a headlight, particularly the lens cut 91a.
In the headlight lens 90 in which the lens surface 91 is omitted and the lens surface 91 is transparent, as shown in the figure, the bumper 20 painted in the same color as the vehicle body color is provided close to the leg portion 92. And the like, the bumper 20 is viewed through the lens surface 91, and the lens surface appears to be colored in the color of the vehicle body, resulting in a problem that the appearance is impaired.

【0006】また、このような場合に前記脚部92のバ
ンパ20に近接する部分に透過を防止する目的で塗装を
施すなどの手段も提案されているが、この場合には塗装
に大変に手間のかかるものとなり、加えて非点灯時には
っっ前記の塗装が観視されて違和感を生じるなど別な問
題点を生じるものとなり、これらの点の解決が課題とさ
れるものとなっていた。
Further, in such a case, a means of applying a coating to the portion of the leg portion 92 near the bumper 20 for the purpose of preventing permeation has been proposed, but in this case, the coating is very troublesome. In addition, it causes another problem such as the above-mentioned coating being visually observed when the lamp is not lit and causing an uncomfortable feeling, and it has been a problem to solve these problems.

【0007】[0007]

【課題を解決するための手段】本発明は前記した従来の
課題を解決するための具体的な手段として、ハウジング
に取付けるための脚部が設けられている前照灯用レンズ
において、前記脚部の少なくとも一辺の内面にはレンズ
面を透視した観視者の視線がこの脚部を透過することを
防止する全反射レンズカットが施されていることを特徴
とする前照灯用レンズを提供することで、脚部を透過し
てバンパなどが観視されることをなくし課題を解決する
ものである。
As a concrete means for solving the above-mentioned conventional problems, the present invention provides a headlamp lens provided with a leg portion for mounting to a housing, wherein the leg portion is provided. There is provided a headlight lens characterized by being provided with a total reflection lens cut for preventing the line of sight of a viewer seeing through the lens surface from passing through this leg portion on at least one side of Thus, the problem is solved by preventing the bumper or the like from being seen through the legs.

【0008】[0008]

【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。尚、理解を容易とするために従来例
と同じ部分には同じ符号を付して説明する。図1に符号
1で示すものは本発明に係る前照灯用レンズであり、こ
の前照灯用レンズ1は前照灯10を構成するものであ
り、レンズ面2と脚部3とで略函状として形成されてい
るものである点は従来例のものと同様である。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail based on an embodiment shown in the drawings. In order to facilitate understanding, the same parts as those in the conventional example will be described with the same reference numerals. Reference numeral 1 in FIG. 1 denotes a headlamp lens according to the present invention. The headlamp lens 1 constitutes a headlamp 10, and the lens surface 2 and the leg portion 3 are omitted. It is similar to the conventional example in that it is formed as a box shape.

【0009】ここで、本発明においては前記脚部3の少
なくともバンパ20などの透視を生じさせたくない面、
例えば下辺脚部31の内面31a側には従来例の項で説
明した縦筋目ローレットが施されることはなく、これに
換えて図2に示すように全反射レンズカットの一種とし
てそれぞれの一つのユニットのカットが凹の四角錐状と
なる四角錐状レンズカット4が施されているものとされ
ている。
In the present invention, at least a surface of the leg portion 3 such as the bumper 20 which is not desired to be seen through,
For example, the vertical streak knurls described in the section of the conventional example are not applied to the inner surface 31a side of the lower leg portion 31, and instead, as shown in FIG. It is assumed that a quadrangular pyramid-shaped lens cut 4 in which the unit is cut into a concave quadrangular pyramid shape is provided.

【0010】以下に前記四角錐状レンズカット4につい
て更に詳細に説明を行えば、この四角錐状レンズカット
4はレンズ面2側からの観視者の視線Sが下辺脚部31
を透過し、例えばバンパ20など、この下辺脚部31の
背面側にある物体が透視されることを防止するために施
されるものである。
The quadrangular pyramidal lens cut 4 will be described in more detail below. With respect to the quadrangular pyramid lens cut 4, the line of sight S of the viewer from the lens surface 2 side is the lower leg 31.
Is provided to prevent the object on the back side of the lower leg 31 such as the bumper 20 from being seen through.

【0011】図3は前記四角錐状レンズカット4の作用
を示すものであり、前記下辺脚部31は上記したように
四角錐状レンズカット4が施されたことで、前記レンズ
面2を透過した視線Sは前記四角錐状レンズカット4の
それぞれのユニットの対峙面4aから下辺脚部31、即
ち、前照灯用レンズ1が形成された例えばポリカーボネ
ート樹脂などの透明部材内に再度入射するものとなる。
FIG. 3 shows the operation of the quadrangular pyramidal lens cut 4. The lower side leg portion 31 passes through the lens surface 2 because the quadrangular pyramid lens cut 4 is formed as described above. The line of sight S re-enters from the facing surface 4a of each unit of the quadrangular pyramid-shaped lens cut 4 to the lower leg 31, that is, a transparent member such as a polycarbonate resin on which the headlamp lens 1 is formed. Becomes

【0012】このときに、前記視線Sは下辺脚部31が
平面として形成されたときよりも、直交方向に近付けら
れた対峙面4aから下辺脚部31に入射するものとなる
ので、入射時に行われる屈折は図中に破線で示した平面
としたときに比べて少ない角度となり、この下辺脚部3
1の背面31bに達したときには、前照灯用レンズ1が
形成された部材の屈折率と大気の屈折率との差により透
明部材の内面で全反射を行うものとなる。
At this time, the line of sight S is incident on the lower leg 31 from the facing surface 4a which is closer to the orthogonal direction than when the lower leg 31 is formed as a flat surface. The angle of refraction caused is smaller than that when the plane shown by the broken line in the figure is used.
When it reaches the back surface 31b of No. 1, the internal reflection of the transparent member causes total internal reflection due to the difference between the refractive index of the member on which the headlamp lens 1 is formed and the refractive index of the atmosphere.

【0013】従って、視線Sは背面31bに塗装膜など
遮蔽手段を施すことなく下辺脚部31を透過することは
なくなり、バンパ20に施された車体色などが観視され
ることはないものとなる。尚、前記視線Sが前照灯用レ
ンズ1を左右の斜め方向から見込むものである場合には
前記四角錐状レンズカット4の右斜面4bあるいは左斜
面4cが上記対峙面4aと同様な作用を成すものとな
り、この場合においても視線Sの下辺脚部31の透過は
生じない。
Therefore, the line-of-sight S will not pass through the lower leg portion 31 without providing a shielding means such as a coating film on the rear surface 31b, and the body color applied to the bumper 20 will not be seen. Become. When the line of sight S is for viewing the headlamp lens 1 from the left and right diagonal directions, the right slope 4b or the left slope 4c of the quadrangular pyramid lens cut 4 has the same function as the facing surface 4a. Therefore, even in this case, the lower leg portion 31 of the line of sight S does not pass through.

【0014】尚、上記の説明はこの種の前照灯用レンズ
1では最も必要となることが多い下辺脚部31の例で説
明を行ったが、本発明はこれに限定されるものではな
く、何れの部分の脚部3に実施するのも自由であり、ま
た、二面以上の複数の脚部3に対して実施するのも自由
であることは言うまでもない。
Although the above description has been made with reference to the example of the lower leg portion 31 which is most often required in the headlight lens 1 of this type, the present invention is not limited to this. Needless to say, it is free to carry out on any part of the leg portions 3 and also free on a plurality of leg portions 3 having two or more surfaces.

【0015】ここで、前記四角錐状レンズカット4を下
辺脚部31の背面31bに施したときにもほヾ同様な作
用、効果が得られるものとなるが、この場合には前記四
角錐状レンズカット4が外面に露出するものとなるの
で、この前照灯用レンズ1が形成されている透明部材と
極めて屈折率が近い水滴などが付着した場合には、その
作用を失うものとなるので、充分な効果を発揮するもの
とは成らなくなる。
Here, when the quadrangular pyramid-shaped lens cut 4 is applied to the back surface 31b of the lower leg portion 31, almost the same action and effect can be obtained. In this case, the quadrangular pyramid shape is used. Since the lens cut 4 is exposed on the outer surface, if a water drop or the like having a refractive index extremely close to that of the transparent member on which the headlamp lens 1 is formed adheres, the action is lost. , It will no longer be fully effective.

【0016】また、この背面31bの場合には長期間の
使用により前記四角錐状レンズカット4への塵埃の付
着、堆積なども当然に考えられ、これらも同様に四角錐
状レンズカット4の作用を失わせる要因となり得るので
好ましくなく、よって、本発明は脚部3の内面に実施す
ることを要旨とする。
Further, in the case of the back surface 31b, it is naturally conceivable that dust adheres to or deposits on the quadrangular pyramidal lens cut 4 due to long-term use. This is not preferable because it may cause the loss of the weight. Therefore, the gist of the present invention is to implement it on the inner surface of the leg portion 3.

【0017】尚、本発明の実際の実施に当たっては、四
角錐状レンズカット4を施すべき脚部3の抜きテーパー
α(図1を参照)を適宜なものと設定する。あるいは四
角錐状レンズカット4の角度を適宜なものと設定するな
どして、前照灯用レンズ1の成形時の型抜き方向に対し
て前記四角錐状レンズカット4がアンダーカットを生じ
ないようにしておくことが生産性の面から好ましい。ま
た、説明では全反射レンズカットとして、四角錐状レン
ズカットの例で示したが、これは円錐状レンズカット、
三角錐状レンズカットあるいは多角錐状レンズカットで
も良いものである。
In actual practice of the present invention, the draft taper α (see FIG. 1) of the leg portion 3 on which the quadrangular pyramid lens cut 4 is to be formed is set as appropriate. Alternatively, by setting the angle of the quadrangular pyramid lens cut 4 to an appropriate angle, the quadrangular pyramid lens cut 4 does not cause an undercut in the die cutting direction when the headlamp lens 1 is molded. It is preferable from the viewpoint of productivity. Also, in the explanation, as the total reflection lens cut, an example of a quadrangular pyramid lens cut is shown, but this is a conical lens cut,
A triangular pyramid lens cut or a polygonal pyramid lens cut may be used.

【0018】[0018]

【発明の効果】以上に説明したように本発明により、脚
部の少なくとも一辺の内面にはレンズ面を透視した観視
者の視線がこの脚部を透過することを防止する四角錐状
レンズカットが施されている前照灯用レンズとしたこと
で、前記レンズ面からこの前照灯用レンズを覗き込んだ
ときにも脚部を透過してその背面にあるバンパなどが観
視されることをなくし、これによりレンズ面が着色され
ているかのように観視されて違和感を生じるのを防止
し、前照灯の美観の向上に極めて優れた効果を奏するも
のである。
As described above, according to the present invention, a quadrangular pyramid-shaped lens cut is provided on the inner surface of at least one side of the leg portion so as to prevent the line of sight of a viewer who sees through the lens surface from passing through the leg portion. Since the headlight lens is provided with a lens, it is possible to see the bumper etc. on the back side through the legs even when looking into the lens for the headlight from the lens surface. This eliminates the appearance of discomfort due to the appearance of the lens surface as if the lens surface is colored, and is extremely effective in improving the aesthetics of the headlight.

【0019】また、上記の構成としたことで、前照灯レ
ンズが形成される部材以外の何等の追加部材も必要とす
ることなく、また、塗装など何等の追加工程も必要とす
ることなく実施可能であるので、非点灯時にも塗装膜な
どにより外観を損なうことなく、且つ、何等の追加費用
も発生させることのないものとなり、コストアップを生
じることなく容易に実施可能とする効果も併せて奏する
ものである。
Further, with the above structure, it is possible to carry out without any additional member other than the member on which the headlight lens is formed, and without any additional process such as painting. Since it is possible, it does not impair the appearance due to the coating film etc. even when it is not lit, and it does not incur any additional cost, and there is also an effect that it can be easily implemented without increasing the cost. It plays.

【図面の簡単な説明】[Brief description of drawings]

【図1】 本発明に係る前照灯用レンズの一実施例を示
す断面図である。
FIG. 1 is a cross-sectional view showing an embodiment of a headlamp lens according to the present invention.

【図2】 同じ実施例の要部を示す斜視図である。FIG. 2 is a perspective view showing a main part of the same embodiment.

【図3】 同じ実施例の作用を示す説明図である。FIG. 3 is an explanatory diagram showing an operation of the same embodiment.

【図4】 従来例を示す断面図である。FIG. 4 is a cross-sectional view showing a conventional example.

【符号の説明】[Explanation of symbols]

1……前照灯用レンズ 2……レンズ面 3……脚部 31……下辺脚部 10……前照灯 20……バンパ S……視線 1 ... Lens for headlight 2 ... Lens surface 3 ... Leg 31 ... Lower leg 10 ... Headlight 20 ... Bumper S ... Line of sight

───────────────────────────────────────────────────── フロントページの続き (72)発明者 小野 健二 愛知県豊田市トヨタ町1番地 トヨタ自動 車株式会社内 (72)発明者 梅津 武広 愛知県豊田市トヨタ町1番地 トヨタ自動 車株式会社内 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Kenji Ono 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation (72) Inventor Takehiro Umezu 1 Toyota Town, Toyota City, Aichi Prefecture Toyota Motor Corporation

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 ハウジングに取付けるための脚部が設け
られている前照灯用レンズにおいて、前記脚部の少なく
とも一辺の内面にはレンズ面を透視した観視者の視線が
この脚部を透過することを防止する全反射レンズカット
が施されていることを特徴とする前照灯用レンズ。
1. A headlamp lens having a leg portion for mounting to a housing, wherein a line of sight of a viewer seeing through the lens surface is transmitted through the leg portion on an inner surface of at least one side of the leg portion. A headlight lens characterized by being subjected to a total reflection lens cut that prevents the occurrence of
JP6072929A 1994-03-18 1994-03-18 Headlight lens Expired - Fee Related JP2871453B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6072929A JP2871453B2 (en) 1994-03-18 1994-03-18 Headlight lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6072929A JP2871453B2 (en) 1994-03-18 1994-03-18 Headlight lens

Publications (2)

Publication Number Publication Date
JPH07262803A true JPH07262803A (en) 1995-10-13
JP2871453B2 JP2871453B2 (en) 1999-03-17

Family

ID=13503550

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6072929A Expired - Fee Related JP2871453B2 (en) 1994-03-18 1994-03-18 Headlight lens

Country Status (1)

Country Link
JP (1) JP2871453B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007227356A (en) * 2006-01-30 2007-09-06 Toyoda Gosei Co Ltd Vehicular lighting fixture
JP2008166024A (en) * 2006-12-27 2008-07-17 Toyoda Gosei Co Ltd Lamp for vehicle
JP2013147340A (en) * 2012-01-23 2013-08-01 Hitachi Ltd Elevator device and elevator car display device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007227356A (en) * 2006-01-30 2007-09-06 Toyoda Gosei Co Ltd Vehicular lighting fixture
JP4733009B2 (en) * 2006-01-30 2011-07-27 豊田合成株式会社 Vehicle lighting
JP2008166024A (en) * 2006-12-27 2008-07-17 Toyoda Gosei Co Ltd Lamp for vehicle
JP2013147340A (en) * 2012-01-23 2013-08-01 Hitachi Ltd Elevator device and elevator car display device

Also Published As

Publication number Publication date
JP2871453B2 (en) 1999-03-17

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