JPH04131801U - headlights - Google Patents
headlightsInfo
- Publication number
- JPH04131801U JPH04131801U JP4738791U JP4738791U JPH04131801U JP H04131801 U JPH04131801 U JP H04131801U JP 4738791 U JP4738791 U JP 4738791U JP 4738791 U JP4738791 U JP 4738791U JP H04131801 U JPH04131801 U JP H04131801U
- Authority
- JP
- Japan
- Prior art keywords
- reflector
- mirror surface
- optical axis
- reflecting mirror
- light emitting
- 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
- 230000003287 optical effect Effects 0.000 claims abstract description 30
- 230000004907 flux Effects 0.000 abstract description 9
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 101700004678 SLIT3 Proteins 0.000 description 2
- 102100027339 Slit homolog 3 protein Human genes 0.000 description 2
- 229910001507 metal halide Inorganic materials 0.000 description 2
- 150000005309 metal halides Chemical class 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Abstract
(57)【要約】
【目的】 単光源バルブを使用するリフレクタ可動型の
前照灯において、すれ違い走行と一般走行ビームの切替
に際して、主光軸の向きとビームの左右拡散量を変化さ
せて望ましい照射光束の配光パターンを得る。
【構成】 上下に分割したリフレクタ１，２の前方光軸
上に単光源のバルブ１０を設ける。固定リフレクタ２は
バルブ１０の発光部Ｇ位置に焦点Ｆ２を有する上側放物
反射鏡面１３と、該発光部Ｇの前側に焦点Ｆ３を有する
下側放物反射鏡面１４を構成する。放物反射鏡面１１を
構成してなる可動リフレクタ１は固定リフレクタ２に架
設した摺動軸１７に対して摺動自在に軸設してなる。可
動リフレクタ１はソレノイド２３と梃子桿１９からなる
切替駆動機構によって、放物反射鏡面１１の焦点Ｆ１が
発光部Ｇの位置と該後方位置間を変位するように駆動す
る。
(57) [Summary] [Purpose] In a headlamp with a movable reflector that uses a single light source bulb, it is desirable to change the direction of the main optical axis and the amount of left-right diffusion of the beam when switching between passing beam and general beam. Obtain the light distribution pattern of the irradiated light flux. [Structure] A single light source bulb 10 is provided on the front optical axis of the reflectors 1 and 2 which are divided into upper and lower parts. The fixed reflector 2 includes an upper parabolic reflecting mirror surface 13 having a focal point F2 at the position of the light emitting section G of the bulb 10, and a lower parabolic reflecting mirror surface 14 having a focal point F3 in front of the light emitting section G. The movable reflector 1 constituted by a parabolic reflecting mirror surface 11 is slidably mounted on a sliding shaft 17 installed on the fixed reflector 2. The movable reflector 1 is driven by a switching drive mechanism consisting of a solenoid 23 and a lever 19 so that the focal point F1 of the parabolic reflecting mirror surface 11 is displaced between the position of the light emitting part G and the rear position.
Description
【０００１】0001
本考案は、光束の照射パターンを切り替えるようにした前照灯の改良に係り、 特に放電灯等の単光源のバルブを使用する灯具において好ましい照射パターンの 切替ができるように構成した前照灯に関するものである。 The present invention relates to an improvement of a headlamp that changes the illumination pattern of the luminous flux. In particular, the preferred irradiation pattern for lighting equipment that uses a single light source bulb such as a discharge lamp. This invention relates to a headlamp configured to be switchable.
【０００２】0002
光源としてメタルハロイド等の放電灯を使用する前照灯の場合、一個のバルブ 内に複数の光源を構成することができないために、照射光束を一般走行ビームと すれ違い走行ビームに切り替える前照灯では、従来より、シェード可動型，バル ブ可動型，或はリフレクタ可動型等の種々の方法が使用されており、そのうちリ フレクタ可動型のものとしては、図１０又は図１２に示す構造のものが知られて いる。 In the case of a headlamp that uses a discharge lamp such as a metal halide as a light source, one bulb Since it is not possible to configure multiple light sources within the Traditionally, headlamps that switch to passing beams have been equipped with movable shades and bulbs. Various methods are used, such as a movable reflector type or a movable reflector type. As a flexible flexible type, a structure shown in FIG. 10 or 12 is known. There is.
【０００３】 図１０に示す構造のものは、リフレクタ５０を上半部リフレクタ５１と下半部 リフレクタ５２に分割してそれぞれ光軸Ｌ方向進退自在に枢設すると共に、両リ フレクタ５１，５２を光軸Ｌと平行に軸設したモータ（図示せず）によって回動 する駆動軸５３の右ネジ部及び左ネジ部と螺合し、該駆動軸５３を左右に回転駆 動して、両リフレクタ５１，５２を実線で示す「すれ違い走行ビーム」位置と破 線で示す「一般走行ビーム」位置に変位（矢印Ａ）する構造になっており、図１ １に示すように、（ａ）すれ違い走行ビームと、（ｂ）一般走行ビームの照射パ ターンを得ることができるのである。0003 The structure shown in FIG. 10 has a reflector 50 with an upper half reflector 51 and a lower half reflector 50. The reflector 52 is divided into two parts and pivoted so that they can move forward and backward in the direction of the optical axis L. The deflectors 51 and 52 are rotated by a motor (not shown) whose shaft is installed parallel to the optical axis L. The drive shaft 53 is threadedly engaged with the right-hand threaded portion and the left-hand threaded portion of the drive shaft 53 to rotate the drive shaft 53 left and right. Move both reflectors 51 and 52 to the “passing beam” position shown by the solid line and the broken line. It has a structure in which it is displaced (arrow A) to the "general running beam" position shown by the line in Figure 1. As shown in Figure 1, the irradiation patterns of (a) the passing beam and (b) the general beam are You can get a turn.
【０００４】 また、図１２に示す構造のものは、リフレクタ６０を上半部リフレクタ６１と 下半部リフレクタ６２に分割すると共に、後端を揺動自在に軸設した上半部リフ レクタ６１を、ソレノイド（図示せず）等の駆動により伏仰駆動（矢印Ｂ）して 「すれ違い走行ビーム」位置と「一般走行ビーム」位置に変位する構造になって おり、図１３に示すように、（ａ）すれ違い走行ビームと、（ｂ）一般走行ビー ムの照射パターンを得ることができる。0004 Further, in the structure shown in FIG. 12, the reflector 60 is combined with the upper half reflector 61. The upper half reflector is divided into a lower half reflector 62, and the rear end is pivoted so as to be swingable. The rector 61 is driven prone (arrow B) by driving a solenoid (not shown) or the like. It has a structure that shifts between the "passing traveling beam" position and the "general traveling beam" position. As shown in Figure 13, (a) a passing beam and (b) a general beam It is possible to obtain a beam irradiation pattern.
【０００５】[0005]
そして照射パターンを設計する場合、一般走行ビーム時の主光軸に比べてすれ 違い走行ビーム時の主光軸位置を下向きにすることが望ましいが、上記従来の構 成では、前者の場合には切替によって照射した光束がスクリーンの中央に対して 放射方向の拡散量を変化させることに留まり、図１１に示すように、一般走行ビ ームとすれ違い走行ビーム時の主光軸Ｌの位置が変化しないという問題を有して いる。 When designing the irradiation pattern, it is necessary to It is desirable to have the main optical axis position downward when using a different beam, but the conventional structure described above In the former case, the irradiated light flux due to switching is directed toward the center of the screen. As shown in Fig. 11, it is limited to changing the amount of diffusion in the radial direction. There is a problem that the position of the main optical axis L does not change when the beam passes by the main beam. There is.
【０００６】 また、一般走行ビーム時と比較してすれ違い走行ビーム時には、左右方向の拡 散量を増加させることが望まれているが、後者の場合は図１３の（ａ）と（ｂ） に示すように、左右方向の拡散量が変化しないという問題を有している。[0006] In addition, compared to the normal running beam, when the beam passes each other, the width is expanded in the left and right direction. It is desired to increase the dispersion amount, but in the latter case, Fig. 13 (a) and (b) As shown in Figure 2, there is a problem in that the amount of diffusion in the left and right direction does not change.
【０００７】 本考案は、上記問題を鑑みて創案されたものであり、単光源バルブを使用する リフレクタ可動型の前照灯において、すれ違い走行ビームと一般走行ビームの切 替に際して、主光軸を好ましい向きに変化させると同時に、ビームの左右拡散量 を変化させて望ましい照射光束の配光パターンを得ることができる前照灯を提供 することを目的とするものである。[0007] This invention was devised in view of the above problems, and uses a single light source bulb. In headlamps with movable reflectors, switching between the passing running beam and the general running beam is possible. When switching, the main optical axis is changed to a preferable direction, and at the same time, the amount of left and right spread of the beam is adjusted. Provides a headlamp that can obtain a desired light distribution pattern by changing the The purpose is to
【０００８】[0008]
上記目的を達成するために、本考案に係る前照灯は、リフレクタの前方光軸上 に単光源のバルブを設けた前照灯において、上記バルブの発光部位置に焦点を有 する上側放物反射鏡面を光軸の周りに構成すると共に、該発光部の前側における 光軸上に焦点を有する下側放物反射鏡面を光軸より略下側に構成してなる固定リ フレクタと、上記固定リフレクタに対して光軸方向に所定のストロークで変位自 在になると共に、上下方向に対しても変位自在に枢設し、光軸の略上側に放物反 射鏡面を構成してなる可動リフレクタと、上記可動リフレクタを該放物反射鏡面 の焦点が、前記発光部の位置と該後方に駆動するように変位駆動する切替駆動機 構とから構成したことを要旨とするものである。 In order to achieve the above object, the headlight according to the present invention has In a headlamp equipped with a single light source bulb, the focal point is at the light emitting part of the bulb. An upper parabolic reflecting mirror surface is constructed around the optical axis, and an upper parabolic reflecting mirror surface is constructed around the optical axis. A fixed lens consisting of a lower parabolic reflecting mirror surface that has a focal point on the optical axis and is located approximately below the optical axis. reflector and the above-mentioned fixed reflector in the optical axis direction with a predetermined stroke. At the same time, it is pivoted so that it can be freely displaced vertically. A movable reflector comprising a reflective mirror surface, and a movable reflector configured as a parabolic reflective mirror surface. a switching drive device that drives a displacement drive so that the focal point of the light emitting section is driven backwards from the position of the light emitting section; The gist of this book is that it consists of the following structure.
【０００９】[0009]
上記構成の前照灯を「一般走行ビーム」と「すれ違い走行ビーム」に切り替え る場合、 （１）一般走行ビームの時は、 可動リフレクタを放物反射鏡面の焦点がバルブの発光部位と一致する位置に切 替駆動機構を介して変位する。 この変位によって、固定リフレクタの上側放物反射鏡面と可動リフレクタの放 物反射鏡面によって反射される光束は光軸中心と光軸の上側に位置する平行な非 拡散光束になり、光軸より下側に固定リフレクタの下側放物反射鏡面によって反 射された正立の拡散光束のパターンが形成される。 （２）すれ違い走行ビームの時は、 可動リフレクタを放物反射鏡面の焦点がバルブの発光部位の後方に位置するよ うに切替駆動機構により変位する。 この変位によって、可動リフレクタの放物反射鏡面によって反射される光束は 光軸より下側に倒立拡散して照射され、光軸より下側に拡散照射された固定リフ レクタの下側放物反射鏡面からの拡散光束のパターンと重なった照射パターンを 形成する。 Switch the headlights of the above configuration to "general running beam" and "passing running beam" If (1) For general running beam, Cut the movable reflector to the position where the focus of the parabolic mirror surface matches the light emitting part of the bulb. Displaced via a replacement drive mechanism. This displacement causes the upper parabolic mirror surface of the fixed reflector to emit light from the movable reflector. The light beam reflected by the object reflecting mirror surface is parallel to the optical axis center and above the optical axis. The light beam becomes diffused and is reflected by the lower parabolic mirror surface of the fixed reflector below the optical axis. A pattern of erect diffused light beams is formed. (2) When the beams pass each other, Move the movable reflector so that the focal point of the parabolic mirror surface is located behind the light emitting part of the bulb. Displaced by a switching drive mechanism. Due to this displacement, the luminous flux reflected by the parabolic mirror surface of the movable reflector is An inverted diffused irradiation below the optical axis, a fixed lift with a diffused irradiation below the optical axis. The irradiation pattern overlaps with the diffused light flux pattern from the lower parabolic mirror surface of the rector. Form.
【００１０】0010
以下、本考案に係る前照灯の構成の好適な実施例を図１乃至図６に従って説明 する。 図面において、１及び２は、正面形状が横長の矩形になる前照灯の上下に分割 した可動リフレクタと固定リフレクタであり、両リフレクタ１，２の外縁から灯 具の中心軸ＣＬに向かって伸びる３時方向の水平分割スリット３と、８時３０分 方向の傾斜分割スリット４と、可動リフレクタ１側に位置して上記中心軸ＣＬの 周りに形成した円弧状分割スリット５、及び該円弧状分割スリット５の傾斜分割 スリット４側に形成した大径円弧状分割スリット６によって上下に分割した構造 になっている。上記各分割スリット３，４，５，６は、略１ｍｍの隙間を形成す ると共に、相互の部材はに中心軸ＣＬ方向に位置変位可能に分割してある。上記 円弧状分割スリット４によって形成された固定リフレクタ２の底部（中心軸ＣＬ と交差する部分）７には、バルブソケット８を嵌着するための嵌合孔９が穿設し てあり、該嵌合孔９に嵌着したバルブソケット８には、メタルハロイド灯等の放 電灯式バルブ１０が着脱可能に取り付けられると共に、該バルブ１０の発光部Ｇ を底部７から略２５ｍｍの上記中心軸ＣＬ上に位置してある。 Hereinafter, preferred embodiments of the structure of the headlamp according to the present invention will be described with reference to FIGS. 1 to 6. do. In the drawing, 1 and 2 are divided into upper and lower parts of the headlight whose front shape is a horizontally long rectangle. A movable reflector and a fixed reflector. Horizontal dividing slit 3 in the 3 o'clock direction extending toward the center axis CL of the ingredients, and the 8:30 o'clock the inclined dividing slit 4 in the direction, and the central axis CL located on the movable reflector 1 side. An arc-shaped dividing slit 5 formed around the circumference, and an inclined division of the arc-shaped dividing slit 5 A structure divided into upper and lower parts by a large-diameter arc-shaped dividing slit 6 formed on the slit 4 side. It has become. Each of the above dividing slits 3, 4, 5, 6 forms a gap of approximately 1 mm. At the same time, the mutual members are divided so as to be movable in the direction of the central axis CL. the above The bottom of the fixed reflector 2 formed by the arc-shaped dividing slit 4 (center axis CL A fitting hole 9 for fitting the bulb socket 8 is bored in the portion (intersecting with the valve socket) 7. The bulb socket 8 fitted into the fitting hole 9 is equipped with a metal halide lamp, etc. The electric light bulb 10 is removably attached, and the light emitting part G of the bulb 10 is located approximately 25 mm from the bottom 7 on the central axis CL.
【００１１】 上記可動リフレクタ１は、焦点距離が略２７ｍｍ位置に焦点Ｆ１を有する放物 反射鏡面１１を構成し、また固定リフレクタ２は上記水平分割スリット３と傾斜 分割スリット４から内径方向に延びる段差構造線１２により、上側放物反射鏡面 １３が下側放物反射鏡面１４より略２ｍｍ後退ｂした構造になり、焦点Ｆ２を有 する上側放物反射鏡面１３の焦点距離が略２４ｍｍ、焦点Ｆ３を有する下側放物 反射鏡面１４の焦点距離が略２９ｍｍになるように構成してある。そして固定リ フレクタ２は、上側放物反射鏡面１３の焦点Ｆ２がバルブ１０の発光部Ｇと重な るように構成してあり、下側放物反射鏡面１４の焦点Ｆ３は該発光部Ｇよりも前 方に位置し、且つ光軸Ｌｆが中心軸ＣＬよりも下側に位置するように配置する。[0011] The movable reflector 1 is a paraboloid having a focal point F1 at a focal length of approximately 27 mm. The fixed reflector 2 constitutes a reflecting mirror surface 11, and the fixed reflector 2 is inclined with the horizontal dividing slit 3. The upper parabolic reflecting mirror surface is formed by the step structure line 12 extending from the dividing slit 4 in the inner diameter direction. 13 is set back approximately 2 mm from the lower parabolic reflecting mirror surface 14, and has a focal point F2. The focal length of the upper parabolic reflecting mirror surface 13 is approximately 24 mm, and the lower paraboloid has a focal point F3. The reflecting mirror surface 14 is configured to have a focal length of approximately 29 mm. and fixed link In the reflector 2, the focal point F2 of the upper parabolic reflecting mirror surface 13 overlaps with the light emitting part G of the bulb 10. The focal point F3 of the lower parabolic reflecting mirror surface 14 is located in front of the light emitting section G. and the optical axis Lf is located below the central axis CL.
【００１２】 また、上記可動リフレクタ１は、固定リフレクタ２の底面に固設した底板２６ の前端部と後端部に突設してなる支持桿１５，１６間に架設した摺動軸１７，１ ７に対して該可動リフレクタ２の上面に固設した天板２７に穿設した摺動孔１８ ，１８を軸方向摺動自在（矢印Ｃ）に軸設した構成になるもので、該摺動軸１７ は中心軸ＣＬに対して略９゜、仰角方向に傾斜αしてある。１９は、上記後端部 支持桿１６にピン軸２０を介して中腹部を揺動自在に軸着した二股状の梃子桿で あり、二股の両端部をピン軸２１を介して上記可動リフレクタ１の後端と連結す ると共に、ブラケット２２を介して固定リフレクタ２の底壁部に固設したソレノ イド２３の駆動出力軸の２４端部と該梃子桿１９の他端をピン軸２５を介して連 結した切替駆動機構を構成してある。このソレノイド２３の「ＯＮ」、「ＯＦＦ 」動作による可動リフレクタ１の中心軸ＣＬ方向の変位ストロークＳｆは略４ｍ ｍであり、またそのときの上下方向の変位ストロークＳｖは略０．５〜１．０ｍ ｍである。0012 The movable reflector 1 also includes a bottom plate 26 fixed to the bottom of the fixed reflector 2. sliding shafts 17, 1 installed between support rods 15, 16 protruding from the front and rear ends of the 7, a sliding hole 18 bored in the top plate 27 fixed on the upper surface of the movable reflector 2 , 18 are installed so as to be slidable in the axial direction (arrow C), and the sliding shaft 17 is inclined α in the elevation direction by approximately 9° with respect to the central axis CL. 19 is the rear end portion It is a bifurcated lever rod whose midsection is swingably attached to the support rod 16 via a pin shaft 20. Both ends of the fork are connected to the rear end of the movable reflector 1 via the pin shaft 21. At the same time, a solenoid fixed to the bottom wall of the fixed reflector 2 via the bracket 22 The 24 end of the drive output shaft of the id 23 and the other end of the lever 19 are connected via a pin shaft 25. A switching drive mechanism is constructed. “ON” and “OFF” of this solenoid 23 The displacement stroke Sf of the movable reflector 1 in the direction of the central axis CL due to the operation is approximately 4 m. m, and the vertical displacement stroke Sv at that time is approximately 0.5 to 1.0 m. It is m.
【００１３】 ２８は、前側の支持桿１５に螺合したストローク調整ネジ、２９は、後側の支 持桿１６に螺合した初期位置調整ネジであり、それぞれ前記摺動軸１７と平行に 進退自在に螺合架設し、天板２７に突設した位置制御突起３０の端面と当突して 可動リフレクタ１の初期位置と変位ストロークＳｆを調節する構造である。尚、 図中３１は前記前側の支持桿１５に構成したユニバーサルマウント用枢着孔、３ ２，３２はマウントプラグ嵌合孔である。[0013] 28 is a stroke adjustment screw screwed onto the front support rod 15, and 29 is a rear support rod. These are initial position adjustment screws screwed into the holding rod 16, and parallel to the sliding shaft 17, respectively. It is screwed together so that it can move forward and backward, and it abuts against the end surface of the position control protrusion 30 that projects from the top plate 27. This structure adjusts the initial position and displacement stroke Sf of the movable reflector 1. still, In the figure, reference numeral 31 denotes a universal mount pivot hole formed in the front support rod 15; 2 and 32 are mount plug fitting holes.
【００１４】 上記構成になる前照灯は、ソレノイド２３を「ＯＮ」、「ＯＦＦ」駆動して可 動リフレクタ１を図７及び図８に示すように変位し、図９の（ａ）に示す「一般 走行ビーム」と（ｂ）に示す「すれ違い走行ビーム」の照射パターンを得るよう になるもので、次に両走行ビームの照射パターンについて説明する。[0014] The headlight with the above configuration can be made by driving the solenoid 23 “ON” and “OFF”. The dynamic reflector 1 is displaced as shown in FIGS. 7 and 8, and the "general" In order to obtain the irradiation pattern of the "traveling beam" and the "passing traveling beam" shown in (b), Next, the irradiation pattern of both traveling beams will be explained.
【００１５】 （１）一般走行ビーム 「一般走行ビーム」を選択した場合には、図７に示すように、可動リフレクタ１ が前進位置して、該可動リフレクタ１の光軸Ｌｖが中心軸ＣＬより上方に変位ａ すると共に、中心軸ＣＬ方向では焦点Ｆ１が発光部Ｇと重なるように変位する。 固定リフレクタ２の上側放物反射鏡面１３と下側放物反射鏡面１４によって反射 される光束は、上側放物反射鏡面１３の焦点Ｆ２が発光部Ｇに位置し、下側放物 反射鏡面１４の焦点Ｆ３が発光部の前方に位置するため、図９（ａ）に示すよう に光軸Ｌｆの周りに照射パターンＢ２，Ｂ３を形成するもので、照射パターンＢ ２は正立した拡散しない平行光束となって高照度部を形成すると共に、照射パタ ーンＢ３は正立した拡散光束となって低照度部を形成する。 また、上側放物反射鏡面１３からの光束は、焦点Ｆ１が発光部Ｇと重なり、且 つ光軸Ｌｖが上方に変位ａしているため、正立の拡散しない平行光束を照射し、 水平線Ｈより上方に移動した高照度部の照射パターンＢ１を形成する。 従って、上記固定リフレクタ２の照射パターンＢ２，Ｂ３に可動リフレクタ１ の放物反射鏡面１１からの反射光束による照射パターンＢ１を重ねると、図９（ ａ）に示す一般走行時として好ましい照射パターンを形成する。[0015] (1) General running beam If you select "General running beam", as shown in Figure 7, the movable reflector 1 is in the forward position, and the optical axis Lv of the movable reflector 1 is displaced above the central axis CL. At the same time, the focal point F1 is displaced so as to overlap the light emitting section G in the direction of the central axis CL. Reflected by the upper parabolic reflecting mirror surface 13 and lower parabolic reflecting mirror surface 14 of the fixed reflector 2 The focal point F2 of the upper parabolic reflecting mirror surface 13 is located at the light emitting part G, and the luminous flux Since the focal point F3 of the reflective mirror surface 14 is located in front of the light emitting part, as shown in FIG. 9(a), irradiation patterns B2 and B3 are formed around the optical axis Lf, and the irradiation pattern B 2 becomes an erect, non-diffused parallel beam of light that forms a high-illuminance area, and also changes the irradiation pattern. The beam B3 becomes an erect diffused light beam and forms a low illuminance area. In addition, the light flux from the upper parabolic reflecting mirror surface 13 has a focal point F1 that overlaps with the light emitting part G, and Since the optical axis Lv is displaced upward a, it emits an erect, non-diffused parallel light beam, An irradiation pattern B1 of a high-illuminance area moved above the horizontal line H is formed. Therefore, the movable reflector 1 matches the irradiation patterns B2 and B3 of the fixed reflector 2. When the irradiation pattern B1 by the reflected light beam from the parabolic reflecting mirror surface 11 is superimposed, the result is shown in FIG. A preferable irradiation pattern for general driving as shown in a) is formed.
【００１６】 （２）すれ違い走行ビーム 「すれ違い走行ビーム」を選択した場合には、図８に示すように、可動リフレク タ１が後退位置して、該可動リフレクタ１の光軸Ｌｖが中心軸ＣＬと重なると共 に、焦点Ｆ１が発光部Ｇの後方に位置するように変位する。固定リフレクタ２の 上側放物反射鏡面１３と下側放物反射鏡面１４によって反射される光束は、前記 「一般走行時」の場合と変わらないため、図９（ｂ）に示すように上側放物反射 鏡面１３の照射パターンＢ２と下側放物反射鏡面１４の照射パターンＢ３を形成 する。 また、可動リフレクタ１の放物反射鏡面１１からの光束は、焦点Ｆ１が発光部 Ｇより後退変位をしているため、倒立の拡散光束を照射するようになる。従って 該光束によって形成される照射パターンＢ１は、前記固定リフレクタ２の下側放 物反射鏡面１４からの反射光束によって形成される照射パターンＢ３と重なるよ うになり、傾斜分割スリット４により非対向車線側に水平線Ｈから略１５゜上方 を照射する部分を形成し、全体的に拡散した図９（ｂ）に示すすれ違い走行時と して好ましい照射パターンを形成する。[0016] (2) Passing traveling beam If you select "Passing beam", the movable reflector will appear as shown in Figure 8. When the reflector 1 is in the backward position and the optical axis Lv of the movable reflector 1 overlaps with the central axis CL, Then, the focal point F1 is displaced to be located behind the light emitting section G. Fixed reflector 2 The luminous flux reflected by the upper parabolic reflecting mirror surface 13 and the lower parabolic reflecting mirror surface 14 is Since it is the same as in "normal driving", the upper parabolic reflection is shown in Figure 9(b). Forming an irradiation pattern B2 on the mirror surface 13 and an irradiation pattern B3 on the lower parabolic reflecting mirror surface 14 do. In addition, the light flux from the parabolic reflecting mirror surface 11 of the movable reflector 1 has a focal point F1 at the light emitting part. Since it is displaced backward from G, it emits an inverted diffused light beam. Therefore The irradiation pattern B1 formed by the light beam is the lower radiation of the fixed reflector 2. It overlaps with the irradiation pattern B3 formed by the reflected light beam from the object reflecting mirror surface 14. The inclined dividing slit 4 allows the vehicle to move toward the non-oncoming lane approximately 15° above the horizontal line H. 9 (b), where the irradiation area is formed and the irradiation area is diffused as a whole. to form a preferred irradiation pattern.
【００１７】[0017]
本考案に係る前照灯は、以上のように構成したから、単光源のバルブを使用し た灯具においてリフレクタを上下に分割し、該バルブの発光部が固定リフレクタ の主放物反射鏡面の焦点より後方に位置するように配置すると共に、可動リフレ クタを固定リフレクタに対して前後方向に相対位置変位可能に枢設し、該可動リ フレクタの放物反射鏡面の焦点位置が、前記発光部位置とその前方位置を切替変 位するように駆動機構を構成したこと、また可動リフレクタが前後方向に変位す ると同時に上下方向に変位して主光軸の向きが変わる構成にしたことにより、一 般走行時とすれ違い走行時にそれぞれ必要とする、光軸の周りの照度配分及び左 右方向の拡散状態を理想的に設計することができる等の特徴を有するものであり 、本考案実施後の実用的効果は極めて大きい。 Since the headlight according to the present invention is configured as described above, a single light source bulb is used. In a light fixture, the reflector is divided into upper and lower parts, and the light emitting part of the bulb is a fixed reflector. The movable reflector is located behind the focal point of the main parabolic reflector surface. The reflector is pivotally mounted so that it can be moved relative to the fixed reflector in the front and back direction, and the movable reflector is The focal position of the parabolic reflecting mirror surface of the reflector switches between the light emitting part position and its forward position. The drive mechanism is configured so that the movable reflector moves forward and backward. By using a configuration in which the direction of the main optical axis changes by simultaneously displacing it in the vertical direction, it is possible to The illuminance distribution around the optical axis and the left It has features such as being able to ideally design the diffusion state in the right direction. , The practical effects after implementing this invention are extremely large.
【図１】本考案に係る前照灯の原理を示す模式図であ
る。FIG. 1 is a schematic diagram showing the principle of a headlamp according to the present invention.
【図２】本考案に係る前照灯の一実施例を示す正面図で
ある。FIG. 2 is a front view showing an embodiment of the headlamp according to the present invention.
【図３】同右側面図である。FIG. 3 is a right side view of the same.
【図４】同平面図である。FIG. 4 is a plan view of the same.
【図５】同背面図である。FIG. 5 is a rear view of the same.
【図６】図２におけるＶＩ−ＶＩ線断面図である。FIG. 6 is a sectional view taken along the line VI-VI in FIG. 2;
【図７】一般走行時のリフレクタと発光部の関係を示す
説明図である。FIG. 7 is an explanatory diagram showing the relationship between the reflector and the light emitting section during normal driving.
【図８】すれ違い走行時のリフレクタと発光部の関係を
示す説明図である。FIG. 8 is an explanatory diagram illustrating the relationship between a reflector and a light emitting section when vehicles pass each other.
【図９】（ａ）は一般走行時の照射パターンを示す説明
図、（ｂ）はすれ違い走行時の照射パターンを示す説明
図である。FIG. 9(a) is an explanatory diagram showing an irradiation pattern during normal driving, and FIG. 9(b) is an explanatory diagram showing an irradiation pattern during passing each other.
【図１０】従来の単光源を使用したリフレクタ可動型前
照灯を示す模式図である。FIG. 10 is a schematic diagram showing a conventional movable reflector headlamp using a single light source.
【図１１】図１０の前照灯による一般走行時（ａ）とす
れ違い走行時（ｂ）の照射パターンを示す説明図であ
る。11 is an explanatory diagram showing irradiation patterns by the headlights of FIG. 10 during normal driving (a) and during passing each other (b); FIG.
【図１２】従来の単光源を使用した他のリフレクタ可動
型前照灯を示す模式図である。FIG. 12 is a schematic diagram showing another movable reflector headlamp using a conventional single light source.
【図１３】図１２の前照灯による一般走行時（ａ）とす
れ違い走行時（ｂ）の照射パターンを示す説明図であ
る。13 is an explanatory diagram showing irradiation patterns by the headlights of FIG. 12 during normal driving (a) and during passing each other (b); FIG.
１ 可動リフレクタ ２ 固定リフレクタ ８ バルブソケット １０ バルブ １１，１３，１４ 放物反射鏡面 １５，１６ 支持桿 １７ 摺動軸 １９ 梃子桿 ２３ ソレノイド ２６ 底板 ２７ 天板 ２８ ストローク調整ネジ ２９ 初期位置調整ネジ ３０ 位置制御突起 1 Movable reflector 2 Fixed reflector 8 Valve socket 10 valve 11, 13, 14 Parabolic reflective mirror surface 15, 16 Support rod 17 Sliding shaft 19 Leverage rod 23 Solenoid 26 Bottom plate 27 Top plate 28 Stroke adjustment screw 29 Initial position adjustment screw 30 Position control protrusion
Claims (1)
ブを設けた前照灯において、上記バルブの発光部位置に
焦点を有する上側放物反射鏡面を光軸の周りに構成する
と共に、該発光部の前側における光軸上に焦点を有する
下側放物反射鏡面を光軸より略下側に構成してなる固定
リフレクタと、前記固定リフレクタに対して光軸方向に
所定のストロークで変位自在に成ると共に、上下方向に
対しても変位自在に枢設し、光軸の略上側に放物反射鏡
面を構成してなる可動リフレクタと、前記可動リフレク
タを該放物反射鏡面の焦点が、前記発光部の位置と該後
方に駆動するように変位駆動する切替駆動機構とから構
成したことを特徴とする前照灯。1. A headlamp in which a single light source bulb is provided on the front optical axis of the reflector, in which an upper parabolic reflecting mirror surface having a focal point at the light emitting part position of the bulb is constructed around the optical axis; a fixed reflector configured with a lower parabolic reflecting mirror surface having a focal point on the optical axis on the front side of the light emitting part and substantially below the optical axis; and a fixed reflector that is freely displaceable with a predetermined stroke in the optical axis direction with respect to the fixed reflector. and a movable reflector which is pivotably displaceable in the vertical direction and has a parabolic reflecting mirror surface substantially above the optical axis; 1. A headlamp comprising: a position of a light emitting portion; and a switching drive mechanism for displacing and driving the light emitting portion rearward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991047387U JP2541488Y2 (en) | 1991-05-28 | 1991-05-28 | Headlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991047387U JP2541488Y2 (en) | 1991-05-28 | 1991-05-28 | Headlight |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04131801U true JPH04131801U (en) | 1992-12-04 |
| JP2541488Y2 JP2541488Y2 (en) | 1997-07-16 |
Family
ID=31926486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991047387U Expired - Lifetime JP2541488Y2 (en) | 1991-05-28 | 1991-05-28 | Headlight |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2541488Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08183385A (en) * | 1994-12-29 | 1996-07-16 | Honda Motor Co Ltd | Variable light distribution headlamp device |
-
1991
- 1991-05-28 JP JP1991047387U patent/JP2541488Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08183385A (en) * | 1994-12-29 | 1996-07-16 | Honda Motor Co Ltd | Variable light distribution headlamp device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2541488Y2 (en) | 1997-07-16 |
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