JPH0443805U - - Google Patents
Info
- Publication number
- JPH0443805U JPH0443805U JP9072490U JP9072490U JPH0443805U JP H0443805 U JPH0443805 U JP H0443805U JP 9072490 U JP9072490 U JP 9072490U JP 9072490 U JP9072490 U JP 9072490U JP H0443805 U JPH0443805 U JP H0443805U
- Authority
- JP
- Japan
- Prior art keywords
- reflecting surface
- light beam
- light
- filament
- diffused
- 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 description 3
- 238000009792 diffusion process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Description
第1図は本考案に係る自動車用前照灯の一実施
例を示し、第1図Aは前面レンズを取り外して描
いた正面図、第1図BはそのB−B断面図、第1
図Cは同じくC−C断面図である。第2図Aは上
記実施例の正面図、第2図Bは同じくステツププ
リズムの断面図、第2図Cは同じく素通しレンズ
の断面図である。第3図は上記実施例の配光パタ
ーンを示す平面図であつて、第3図Aは前面レン
ズを取り外した状態を表わし、第3図Bは前面レ
ンズを装着した状態を表わしている。第4図は前
記実施例の作用、効果を説明するために示したも
ので、第4図Aはスクリーン上の配光を表わした
図表、第4図Bは水平断面図に光路図を付記した
図である。第5図及び第6図は、それぞれ従来例
の前照灯を示す断面図である。第7図A,B,C
、第8図A,B、第9図および第10図はそれぞ
れ先願の発明に係る自動車用前照灯の説明図であ
る
1……ランプハウジング、1a……上記ランプ
ハウジングの内面に設けられた反射面、2,2′
……光源バルブ、3……プリズムレンズによつて
構成された前面レンズ、4……従来例の、リフレ
クタ拡散形前照灯のリフレクタ、5……素通し形
の前面レンズ、6……側方に存在する障害物、7
……洗願の発明の実施例におけるリフレクタ、1
1……ランプハウジング、12……前面レンズ、
12a……平行光束反射面、12b……拡散光束
反射面、13……フイラメント、14……前面レ
ンズ、14a……ステツププリズム、14b……
素通しプリズム、F……光源位置、Z……光軸、
X……水平座標軸、Y……垂直座標軸。
Fig. 1 shows an embodiment of an automobile headlamp according to the present invention, Fig. 1A is a front view with the front lens removed, Fig. 1B is a sectional view taken along line B-B, and Fig.
Figure C is also a CC sectional view. FIG. 2A is a front view of the above embodiment, FIG. 2B is a sectional view of the step prism, and FIG. 2C is a sectional view of the transparent lens. FIG. 3 is a plan view showing the light distribution pattern of the above embodiment, in which FIG. 3A shows the state with the front lens removed, and FIG. 3B shows the state with the front lens attached. Fig. 4 is shown to explain the function and effect of the above embodiment, Fig. 4A is a diagram showing the light distribution on the screen, and Fig. 4B is a horizontal sectional view with an optical path diagram added. It is a diagram. FIGS. 5 and 6 are cross-sectional views showing conventional headlights, respectively. Figure 7 A, B, C
, FIGS. 8A and B, FIGS. 9 and 10 are explanatory diagrams of the automobile headlamp according to the invention of the earlier application. 1... Lamp housing, 1a... Provided on the inner surface of the lamp housing. reflective surface, 2,2'
...Light source bulb, 3...Front lens constituted by a prism lens, 4...Reflector of a conventional reflector diffused headlamp, 5...Through-through front lens, 6...On the side Obstacles that exist, 7
...Reflector in the embodiment of the patented invention, 1
1...Lamp housing, 12...Front lens,
12a... Parallel light flux reflecting surface, 12b... Diffused light flux reflecting surface, 13... Filament, 14... Front lens, 14a... Step prism, 14b...
Clear prism, F... light source position, Z... optical axis,
X...Horizontal coordinate axis, Y...Vertical coordinate axis.
Claims (1)
を設けた構造の自動車用前照灯において、 前記光源バルブのフイラメントを、前記凹面鏡
の光軸に対して直交する水平方向に配設し、 上記フイラメントの近傍を通る放射線状の境界
によつて、前記凹面鏡の反射面を平行光束反射面
と、拡散光束反射面とに区分し、 前記の平行光束反射面は、その焦点位置を前記
フイラメントの中央部付近に一致させた回転放物
面によつて構成し、 前記の拡散光束反射面は、前記のフイラメント
から入射した光の少なくとも一部分をほぼ水平方
向に、左右に拡散せしめて反射させる形状とし、
かつ、該拡散反射面の中心寄りの位置ほど強い拡
散傾向を示すように構成し、 前記平行光束反射面で反射された平行光束が前
面レンズを通過する区域には、水平方向に入射し
た光を上向きに屈折させるステツププリズムを設
け、 前記拡散光束反射面で反射された拡散光を含む
光束が前面レンズを通過する区域には、ステツプ
を有しないプリズムを設けたことを特徴とする自
動車用前照灯。[Scope of Claim for Utility Model Registration] An automobile headlamp having a structure in which a light source bulb is installed near the focal point of a concave mirror, and a front lens is provided to cover the front opening of the concave mirror, wherein the filament of the light source bulb is , disposed in a horizontal direction perpendicular to the optical axis of the concave mirror, and by a radial boundary passing near the filament, the reflecting surface of the concave mirror is divided into a parallel light beam reflecting surface and a diffused light beam reflecting surface. The parallel light beam reflecting surface is constituted by a paraboloid of revolution whose focal point is aligned near the center of the filament, and the diffused light beam reflecting surface is configured to reflect light incident from the filament. At least a portion of the light is diffused and reflected from side to side in a substantially horizontal direction;
The diffusive reflecting surface is configured so that a position closer to the center exhibits a stronger diffusion tendency, and the area where the parallel light beam reflected by the parallel light reflecting surface passes through the front lens is provided with horizontally incident light. A headlamp for an automobile, characterized in that a step prism that refracts the prism upward is provided, and a prism without a step is provided in an area where the light beam including the diffused light reflected by the diffused light beam reflection surface passes through the front lens. light.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9072490U JPH0810913Y2 (en) | 1990-05-31 | 1990-08-31 | Automotive headlights |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2-56596 | 1990-05-31 | ||
JP5659690 | 1990-05-31 | ||
JP9072490U JPH0810913Y2 (en) | 1990-05-31 | 1990-08-31 | Automotive headlights |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0443805U true JPH0443805U (en) | 1992-04-14 |
JPH0810913Y2 JPH0810913Y2 (en) | 1996-03-29 |
Family
ID=31890118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9072490U Expired - Lifetime JPH0810913Y2 (en) | 1990-05-31 | 1990-08-31 | Automotive headlights |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0810913Y2 (en) |
-
1990
- 1990-08-31 JP JP9072490U patent/JPH0810913Y2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0810913Y2 (en) | 1996-03-29 |