JP2588658Y2 - Projector lamp - Google Patents

Projector lamp

Info

Publication number
JP2588658Y2
JP2588658Y2 JP1993045316U JP4531693U JP2588658Y2 JP 2588658 Y2 JP2588658 Y2 JP 2588658Y2 JP 1993045316 U JP1993045316 U JP 1993045316U JP 4531693 U JP4531693 U JP 4531693U JP 2588658 Y2 JP2588658 Y2 JP 2588658Y2
Authority
JP
Japan
Prior art keywords
light
reflecting
opening
reflected light
shielding plate
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.)
Active
Application number
JP1993045316U
Other languages
Japanese (ja)
Other versions
JPH0711702U (en
Inventor
隆 横山
Original Assignee
スタンレー電気株式会社
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 スタンレー電気株式会社 filed Critical スタンレー電気株式会社
Priority to JP1993045316U priority Critical patent/JP2588658Y2/en
Publication of JPH0711702U publication Critical patent/JPH0711702U/en
Application granted granted Critical
Publication of JP2588658Y2 publication Critical patent/JP2588658Y2/en
Active legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32Optical layout thereof
    • F21S41/36Combinations of two or more separate reflectors
    • F21S41/365Combinations of two or more separate reflectors successively reflecting the light

Description

【考案の詳細な説明】[Detailed description of the invention]

【0001】[0001]

【産業上の利用分野】本考案は車両用灯具に関するもの
であり、詳細にはヘッドランプなど照明用の灯具として
使用されるプロジェクタランプ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 vehicular lamp, and more particularly to a projector lamp used as a lighting lamp such as a headlamp.

【0002】[0002]

【従来の技術】従来のこの種のプロジェクタランプ90
の構成の例を示すものが図6であり、例えば回転楕円面
など楕円面反射鏡91の一方の焦点F1には電球のフィ
ラメントなど光源92が配設され、反射光線を他の一方
の焦点に収束するものとされると共に、この収束する反
射光線中には遮蔽板93が挿入されて配光特性上で上向
き光と成る下半部が遮蔽されるものとされている。
2. Description of the Related Art A conventional projector lamp 90 of this type is used.
FIG. 6 shows an example of the configuration of FIG. 6. For example, a light source 92 such as a filament of a light bulb is disposed at one focal point F1 of an ellipsoidal reflecting mirror 91 such as a spheroidal surface, and the reflected light is transmitted to the other focal point. The light is converged, and a shielding plate 93 is inserted into the converged reflected light so as to shield the lower half, which becomes upward light in light distribution characteristics.

【0003】上記のように下半部が遮蔽されて断面を下
弦の半円状とされた反射光線は投影レンズ94で照射方
向に投影されるものとなり、このときに上下の反転が行
われて上弦の半円状となり、上向き光を一切に含まない
ものとなって対向車などに対して眩惑を生じさせない配
光特性が得られるものとなる。
As described above, the reflected light beam whose lower half is shielded and whose cross section is formed in a semicircular shape with the lower chord is projected in the irradiation direction by the projection lens 94. At this time, the reflected light is turned upside down. It becomes a semicircular shape of the first chord and does not include any upward light, so that a light distribution characteristic that does not cause dazzling to oncoming vehicles or the like can be obtained.

【0004】[0004]

【考案が解決しようとする課題】しかしながら、前記し
た従来の構成においては前記遮蔽板93により略半分の
光量が遮蔽され失われるものとなるので、光源92の消
費電力の割には明るさが得られないものとなる問題点を
生じる。このことは逆に言えば充分な明るさを得ようと
すれば、回転放物面の反射鏡を採用する方式の灯具と比
較して略2倍の消費電力が必要となり、発熱に対処する
ための灯体の耐熱性の向上など明るさ以外の面でも問題
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。
However, in the above-mentioned conventional configuration, approximately half of the light amount is shielded and lost by the shielding plate 93, so that brightness is obtained for the power consumption of the light source 92. This creates a problem that cannot be achieved. Conversely, in order to obtain sufficient brightness, it is necessary to consume approximately twice as much power as compared to a lamp using a parabolic reflector. However, problems have arisen in aspects other than brightness, such as improvement in the heat resistance of the lamp body, and solving these points has been an issue.

【0005】また、従来の構成においては配光特性上で
不要となる部分は遮蔽板93で完全に遮蔽されるものと
なるので、基本的に上向き光は全く含まないものとな
り、例えば路肩側に運転者の視線よりも高い位置、或い
は路面の頭上に設けられる道路標識などの確認が困難と
なる問題点も生じ、本考案はこの点についての解決も可
能とするものである。
Further, in the conventional configuration, unnecessary portions in light distribution characteristics are completely shielded by the shielding plate 93, so that basically no upward light is included. There is also a problem that it is difficult to confirm a position higher than the driver's line of sight or a road sign provided above the road surface, and the present invention can solve this problem.

【0006】[0006]

【課題を解決するための手段】本考案は前記した従来の
課題を解決するための具体的な手段として、一方の焦点
に光源が配設された楕円面反射鏡と、該楕円面反射鏡の
他の一方の焦点に収束する反射光線中に配設され前記反
射光線の一部を遮蔽する遮蔽板と、該遮蔽板で遮蔽され
た後の反射光線を照射方向に投影する投影レンズとから
成るプロジェクタランプにおいて、前記遮蔽板の前記反
射光線の当接する部分には開口部を設けると共に、この
開口部の上端に沿い前記開口部を通過する反射光線のほ
ヾ全量を略下方に向けて反射する略棚板状の第一反射面
を設け、同じ開口部の下端に沿い前記第一反射面からの
反射光線を所定方向に向けて反射する第二反射面を設け
たことを特徴とするプロジェクタランプを提供すること
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-mentioned conventional problems, an elliptical reflector having a light source at one focal point, and A shielding plate is provided in the reflected light beam converging to the other one of the focal points and shields a part of the reflected light beam. The projection lens projects the reflected light beam after being shielded by the shielding plate in the irradiation direction. In the projector lamp, an opening is provided in a portion of the shielding plate where the reflected light comes into contact, and substantially the entire amount of the reflected light passing through the opening along the upper end of the opening is reflected substantially downward. A projector lamp, comprising: a substantially reflecting plate-like first reflecting surface; and a second reflecting surface for reflecting light reflected from the first reflecting surface in a predetermined direction along a lower end of the same opening. Solve the problem by providing Than it is.

【0007】[0007]

【実施例】つぎに、本考案を図に示す一実施例に基づい
て詳細に説明する。図1に符号1で示すものは本考案に
係るプロジェクタランプであり、このプロジェクタラン
プ1も一方の焦点F1に光源2を配設した楕円面反射鏡
3と、遮蔽板4と、投影レンズ5とで構成され、前記遮
蔽板4は他の一方の焦点F2に収束する反射光線の光束
中で上向光となる部分を遮蔽するように配置されるもの
である点は従来例のものと同様である。
Next, the present invention will be described in detail with reference to an embodiment shown in the drawings. 1 is a projector lamp according to the present invention. The projector lamp 1 also includes an ellipsoidal reflecting mirror 3 in which a light source 2 is disposed at one focal point F1, a shielding plate 4, and a projection lens 5. And the shielding plate 4 is arranged so as to shield a portion that becomes upward light in the light beam of the reflected light beam converging on the other one focal point F2, as in the conventional example. is there.

【0008】しかしながら、本考案により前記遮蔽板4
の反射光線の当接する部分には開口部41Aが設けら
れ、この反射光線の通過を可能なものとされている。同
時に前記開口部41Aの上端41aに接続しては前記楕
円面反射鏡3に向かう面を鏡面とした略棚板状の第一反
射面42Aが設けられ、前記開口部41Aに達した光の
ほぼ全量を略下方に向けて反射するものとされている。
However, according to the present invention, the shielding plate 4
An opening 41A is provided at a portion where the reflected light beam abuts, so that the reflected light beam can pass through. At the same time, a substantially shelf-shaped first reflecting surface 42A having a surface facing the elliptical reflecting mirror 3 as a mirror surface is provided so as to be connected to the upper end 41a of the opening 41A. It is assumed that the entire amount is reflected substantially downward.

【0009】また、前記開口部41Aの下端41bに接
続しては前記第一反射面42Aからの反射光線を投影レ
ンズ5に向けて反射する第二反射面43Aが同様に略棚
板状に設けられるものとされている。従って、前記楕円
面反射鏡3からの反射光線は直接に前記開口部41Aを
通過して投影レンズ5に達することはないが、対峙する
第一反射面42Aと第二反射面43Aとで反射されて設
計者が意図する方向性が与えられた後に投影レンズ5に
達するものとされている。
A second reflecting surface 43A, which is connected to the lower end 41b of the opening 41A and reflects light reflected from the first reflecting surface 42A toward the projection lens 5, is also provided in a substantially shelf shape. It is supposed to be. Therefore, the reflected light beam from the elliptical reflecting mirror 3 does not directly pass through the opening 41A and reaches the projection lens 5, but is reflected by the opposing first reflecting surface 42A and second reflecting surface 43A. Thus, the projection lens 5 reaches the projection lens 5 after the direction intended by the designer is given.

【0010】ここで、前記開口部41Aおよび第一反射
面42A、第二反射面43Aについて更に詳細に説明を
行うと、先ず、図2に示す開口部41Aは前記遮蔽板4
のほぼ全幅に渡り設けられたものであり、このとき同時
に第一反射面42A、第二反射面43Aは凹円柱面状な
ど形状が適宜に形成され前記投影レンズ5に対して水平
な光線を入射させるものとされている。
Here, the opening 41A, the first reflecting surface 42A, and the second reflecting surface 43A will be described in more detail. First, the opening 41A shown in FIG.
At this time, the first reflecting surface 42A and the second reflecting surface 43A are appropriately formed in a shape such as a concave cylindrical surface at the same time, and a horizontal light beam is incident on the projection lens 5. It is supposed to be.

【0011】このようにして得られる開口部41Aから
の補助配光特性DAを示すものが図3であり、プロジェ
クタランプ1による本来の配光特性Dに加えて水平線H
の直下に水平方向に幅の広い開口部41Aからの補助配
光特性DAが重複されるものとなり、総合してより明る
い配光特性が得られるものとなる。即ち、これを言い換
えれば、遮蔽板4により従来は遮蔽され無効となってい
た光量が回生されるものとなる。
FIG. 3 shows the auxiliary light distribution characteristic DA from the opening 41A obtained in this way. In addition to the original light distribution characteristic D by the projector lamp 1, a horizontal line H
The auxiliary light distribution characteristic DA from the opening 41A having a large width in the horizontal direction is overlapped directly below, so that a brighter light distribution characteristic can be obtained as a whole. In other words, in other words, the amount of light that has been blocked and disabled by the shield plate 4 in the past is regenerated.

【0012】図4に示すものは同じく本考案の別の実施
例であり、前の実施例が専らに光量の回生を主目的とし
て行われていたのに対し、この実施例はプロジェクタラ
ンプ1の視認性の改善を主目的とするものである。上記
の目的を達成するために、この実施例では開口部41B
はプロジェクタランプ1が左側通行用である場合には運
転席側から見て遮蔽板4の右端寄りに設けられ、第一反
射面42B、第二反射面43Bも上下方向に拡がる光線
を投影レンズ5に入射させるものとして形成されてい
る。
FIG. 4 shows another embodiment of the present invention. In contrast to the previous embodiment in which the main purpose of the present invention is mainly to regenerate the amount of light, this embodiment is different from that of the projector lamp 1 shown in FIG. The main purpose is to improve visibility. In order to achieve the above object, in this embodiment, the opening 41B
When the projector lamp 1 is for left-hand traffic, the projection lens 5 is provided near the right end of the shielding plate 4 when viewed from the driver's seat side, and the first reflection surface 42B and the second reflection surface 43B also emit light rays that spread in the vertical direction. Is formed.

【0013】このようにして得られる開口部41Bから
の補助配光特性DBを示すものが図5であり、プロジェ
クタランプ1による本来の配光特性Dの路肩側となる左
端部には上向光を含む補助配光特性DBが重複され、前
記した路肩側の視認性を飛躍的に改善するものとなる。
従って、この実施例においては光量の回生の面ではそれ
程の改善は期待できないものの、例えば道路標識などの
視認性に劣るとされているプロジェクタランプ1の基本
的な特性を改善するものとなり、前の実施例と同様に顕
著な効果が得られるものとなる。
FIG. 5 shows the auxiliary light distribution characteristic DB from the opening 41B obtained in this way, and the left end of the original light distribution characteristic D of the projector lamp 1 on the road shoulder side has upward light. The auxiliary light distribution characteristic DB including the above is duplicated, and the visibility on the road shoulder side described above is remarkably improved.
Therefore, in this embodiment, although the improvement of the light amount cannot be expected to be so much improved, the basic characteristics of the projector lamp 1, which is considered to be inferior in visibility of, for example, road signs, are improved. A remarkable effect can be obtained as in the embodiment.

【0014】[0014]

【考案の効果】以上に説明したように本考案により、遮
蔽板の反射光線の当接する部分には開口部を設けると共
に、この開口部の上端に沿い前記開口部を通過する反射
光線のほぼ全量を略下方に向けて反射する略棚板状の第
一反射面を設け、同じ開口部の下端に沿い前記第一反射
面からの反射光線を所定方向に向けて反射する第二反射
面を設けたプロジェクタランプとしたことで、従来は遮
蔽板により遮蔽されて無効となっていた部分の光を開口
部により透過させると共に第一反射面と第二反射面とで
光束を適宜な形状に加工して投影レンズで投影させ回生
させるものとし、本来の配光特性に加算或いは補完させ
て光量アップ、視認性の向上を可能として、もってこの
種のプロジェクタランプの性能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, an opening is provided at a portion where the reflected light beam abuts on the shielding plate, and substantially the entire amount of the reflected light beam passing through the opening along the upper end of the opening. A substantially reflecting plate-like first reflecting surface is provided for reflecting the light substantially downward, and a second reflecting surface is provided along a lower end of the same opening to reflect the light reflected from the first reflecting surface in a predetermined direction. By using the projector lamp, the light in the area that was conventionally blocked by the shielding plate and invalidated is transmitted through the opening, and the luminous flux is processed into an appropriate shape by the first reflection surface and the second reflection surface. The light is projected and regenerated by the projection lens and added or supplemented to the original light distribution characteristics to increase the amount of light and improve the visibility, thereby achieving an extremely excellent effect in improving the performance of this type of projector lamp. In things That.

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

【図1】 本考案に係るプロジェクタランプの一実施例
を示す断面図である。
FIG. 1 is a sectional view showing an embodiment of a projector lamp according to the present invention.

【図2】 同じ実施例の要部を示す正面図である。FIG. 2 is a front view showing a main part of the same embodiment.

【図3】 同じ実施例の配光特性を示す説明図である。FIG. 3 is an explanatory diagram showing light distribution characteristics of the same embodiment.

【図4】 同じく本考案の別の実施例を要部で示す正面
図である。
FIG. 4 is a front view showing another embodiment of the present invention in a main part.

【図5】 別の実施例の配光特性を示す説明図である。FIG. 5 is an explanatory diagram showing light distribution characteristics of another embodiment.

【図6】 従来例を示す断面図である。FIG. 6 is a sectional view showing a conventional example.

【符号の説明】[Explanation of symbols]

1……プロジェクタランプ 2……光源 3……楕円面反射鏡 4……遮蔽板 41A、41B……開口部 42A、42B……第一反射面 43A、43B……第二反射面 5……投影レンズ D……配光特性 DA、DB……補助配光特性 DESCRIPTION OF SYMBOLS 1 ... Projector lamp 2 ... Light source 3 ... Elliptical reflecting mirror 4 ... Shielding plate 41A, 41B ... Opening 42A, 42B ... 1st reflection surface 43A, 43B ... 2nd reflection surface 5 ... Projection Lens D: Light distribution characteristics DA, DB: Auxiliary light distribution characteristics

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項1】 一方の焦点に光源が配設された楕円面反
射鏡と、該楕円面反射鏡の他の一方の焦点に収束する反
射光線中に配設され前記反射光線の一部を遮蔽する遮蔽
板と、該遮蔽板で遮蔽された後の反射光線を照射方向に
投影する投影レンズとから成るプロジェクタランプにお
いて、前記遮蔽板の前記反射光線の当接する部分には開
口部を設けると共に、この開口部の上端に沿い前記開口
部を通過する反射光線のほぼ全量を略下方に向けて反射
する略棚板状の第一反射面を設け、同じ開口部の下端に
沿い前記第一反射面からの反射光線を所定方向に向けて
反射する第二反射面を設けたことを特徴とするプロジェ
クタランプ。
1. An elliptical reflector having a light source disposed at one focal point, and a part of the reflected light being disposed in a reflected light beam converging at another focal point of the elliptical reflector. In a projector lamp comprising a shielding plate and a projection lens that projects a reflected light beam after being shielded by the shielding plate in an irradiation direction, an opening is provided in a portion of the shielding plate where the reflected light beam abuts, A substantially shelf-shaped first reflecting surface is provided along the upper end of the opening to reflect substantially the entire amount of reflected light passing through the opening substantially downward, and the first reflecting surface is provided along the lower end of the opening. A second reflecting surface for reflecting light rays reflected from the light source in a predetermined direction.
JP1993045316U 1993-07-29 1993-07-29 Projector lamp Active JP2588658Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1993045316U JP2588658Y2 (en) 1993-07-29 1993-07-29 Projector lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1993045316U JP2588658Y2 (en) 1993-07-29 1993-07-29 Projector lamp

Publications (2)

Publication Number Publication Date
JPH0711702U JPH0711702U (en) 1995-02-21
JP2588658Y2 true JP2588658Y2 (en) 1999-01-13

Family

ID=12715903

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1993045316U Active JP2588658Y2 (en) 1993-07-29 1993-07-29 Projector lamp

Country Status (1)

Country Link
JP (1) JP2588658Y2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4289268B2 (en) * 2004-10-04 2009-07-01 市光工業株式会社 Vehicle headlamp unit
JP4795094B2 (en) * 2006-04-24 2011-10-19 株式会社小糸製作所 Vehicle headlamp
JP4595891B2 (en) * 2006-06-23 2010-12-08 市光工業株式会社 Vehicle headlamp
JP4694438B2 (en) * 2006-08-01 2011-06-08 スタンレー電気株式会社 Vehicle headlamp
JP4698566B2 (en) * 2006-12-14 2011-06-08 スタンレー電気株式会社 Projector type vehicle lamp
JP4811429B2 (en) * 2008-05-07 2011-11-09 市光工業株式会社 Projector type headlamp
JP5169665B2 (en) * 2008-09-17 2013-03-27 市光工業株式会社 Vehicle headlamp
JP6052599B2 (en) * 2012-11-19 2016-12-27 スタンレー電気株式会社 Vehicle headlamp
JP6725282B2 (en) * 2016-03-25 2020-07-15 スタンレー電気株式会社 Vehicle lighting

Also Published As

Publication number Publication date
JPH0711702U (en) 1995-02-21

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