JPH0249301A - Headlight for automobile - Google Patents

Abstract

PURPOSE:To realize the increase of the central brightness of the light distribution pattern by forming the reflection surface of a reflection mirror with plural partial reflection surfaces, and making at least one of the partial reflection surfaces into a parabora-ellipse complex surface. CONSTITUTION:An automobile headlight 1 furnishes a reflection mirror 2, a bulb 3, and a lens 4. The recessed surface of the reflection mirror 2 is made as a reflection surface, which is divided into six reflection surfaces 5 to 10. Of these partial reflection surfaces, the left side and the right side fan-shape sectors 7 and 8 are parabora-ellipse complex surfaces, and the other reflection surfaces 5, 6, 9, and 10 are all paraboric surfaces. The focus of the parabora and the first focus of the ellipse are coincident, and the lights emitted from light sources 18 and 19 placed at the focuses and reflected by the parabora- ellipse complex surfaces are extended in the direction vertical to the axes of the paraboras in the section, and focused to the line passing the second focus of the ellipse. Consequently, the light concentrated to the center of the light distribution pattern can be increased, and the central brightness of the light distribution pattern can be increased.

Description

[Detailed description of the invention] The automobile headlamp of the present invention will be explained according to the following items.

A. Field of use in a business B1 Overview of the invention C1 Prior art [Figs. 21 to 24] D1 Problem to be solved by the invention E1 Means for solving the problem F. Examples [Figs. 1 to 24] [Figure 20] F-1, Basic structure [Figures 1 to 5] a, Overview 1 Reflector C9 Light bulb d, Lens F-2, First embodiment [Figures 6 to 10] a , Configuration, Light distribution pattern C1 modification example F-3, Second embodiment [Figures 11 to 15] a. Configuration, Light distribution pattern C9 modification example F-4, Third embodiment [ 16 to 20] a. Configuration, light distribution pattern G1 Effects of the invention (A. Field of industrial application) The present invention relates to a novel automobile headlamp. Specifically, regarding an automobile headlamp equipped with a so-called multi-stage reflector in which the reflective surface of the reflector is divided into a plurality of partial reflective surfaces, at least one of the partial reflective surfaces is a parabolic-elliptical composite surface. This aims to provide a new automobile headlamp that allows more light to go to the center of the light distribution pattern than before, and allows the center luminous intensity to be raised to the required height without straining. .

(B. Summary of the Invention) The automobile headlamp of the present invention has a reflective surface formed of a plurality of partial reflective surfaces, and at least one of the partial reflective surfaces is a parabolic-elliptic composite surface. By making the light rays almost vertical, the inner edge of the light pattern reflected by the parabola-ellipse compound surface comes closer to the center, and the light going to the center of the light distribution pattern is reduced compared to the conventional method. You can increase the central brightness without overdoing it by increasing the number of lights.

(c, Prior Art) [Figures 21 to 24] For example, there is a reflector for the headlight of a privately-owned vehicle, as shown in Japanese Patent Publication No. 14003/1983, which is shown in Figures 21 to 24. It is shown in FIG.

In FIGS. 21 to 24, (100) is a reflecting mirror main body, and (102) is a back opening formed in the center of the main body (100) for inserting a light source. (103)
・, (104) are first reflecting portions arranged at left and right intervals from the back opening (102), (105), (106)
are the second reflecting section (107), which are arranged between the first reflecting section (103), (104) and the back opening (102), respectively.
) is above the rear opening (102) and the first reflecting part (
102) and (103).

And each reflecting part (103), (104), (105)
, (108), and (107) form a paraboloid of rotation that shares the focal position, and the second reflecting portions (105) and (106)
) and the third reflecting section (107) are the first reflecting section (103),
(104) has a shorter focal length than that of (104).

The light distribution by the reflecting mirror (100) as described above is
The result will be as shown in Figure 4. In this case, the light source is located along the main optical axis of the reflecting mirror (100) (each of the reflecting parts (103), (104)
), (105), (106), and (107). ) is placed slightly in front of the focal point, and uses a subfilament (also for low beam) whose front and lower half are covered.

In the light distribution in Fig. 24, the part (A) is the first reflecting part (103
), (104), part (B) is due to light reflected at the third reflecting part (107),
The portion (C) is due to the light reflected by the second reflecting portions (105) and (106). The part (A) has high illuminance, and the parts (B) and (C) have relatively uniform and low illuminance.

(D. Problem to be Solved by the Invention) The light distribution pattern shown in FIG. 24 above is further made suitable as a light distribution pattern for a passing beam of an automobile headlamp by a lens6. For example, the light distribution pattern shown in FIG. Although there is no light in the central part of the light pattern, part of the light in part A is shifted toward the center by the lens, thereby allowing the light to reach the central part.

By the way, the above-mentioned area is directly below the horizontal line passing through the same height as the automobile headlamp, and is a position approximately corresponding to the center of the automobile, which requires the highest luminous intensity in the passing beam. However, in the above-mentioned conventional automobile headlight reflector, it is impossible to direct light to this area at all, and the rest is left to the function of the lens.

In this way, with conventional automobile headlights, there is no light in the areas that require the most luminous intensity with just a reflector, and the light is directed to the areas by the function of the lens. Inevitably, the load on the lens increases, and when adverse conditions come together, for example, the vertical width of the lens becomes narrow, or the lens is tilted significantly in the vertical direction,
This even causes the problem of not being able to obtain the desired light distribution.

(E. Means for Solving the Problems) In order to solve the above-mentioned problems, the automobile headlamp of the present invention has a reflective surface formed of a plurality of partial reflective surfaces, and one of the partial reflective surfaces. At least one of the surfaces is a parabola-ellipse compound surface, and the condensing line thereof is substantially perpendicular.

Therefore, in the automobile headlamp of the present invention, since the pattern of light reflected by the parabolic-elliptic composite surface of the partially reflecting surface of the reflector covers the center, the light that goes to the center of the light distribution pattern can be increased compared to the conventional method, and the center luminous intensity of the light distribution pattern can be increased without overdoing it.

(F. Embodiment) [The details of the automobile headlamp of the present invention will be explained in accordance with the illustrated embodiment below in FIGS. 1 to 20.

(F-1, Basic structure) [Figures 1 to 5] First,
The basic structure of the automobile headlamp according to the present invention will be explained with reference to FIGS. 1 to 5.

(a, Overview) Reference numeral 1 denotes an automobile headlamp, which includes a reflector 2, a light bulb 3, and a lens 4.

(b, Reflector) The reflector 2 has a horizontally long rectangular shape from the front, and has a concave surface that opens toward the front. Partially reflective surface 5.6.7.8.
It is divided into 9.10.

Reference numeral 11 denotes an insertion hole formed in the center of the reflecting mirror 2, through which a glass bulb (to be described later) of the light bulb 3 is inserted, and its filament is positioned in a space surrounded by a reflecting surface.

The upper reflective surface 5 has a dividing line 1 extending from the upper part of the opening edge of the insertion hole 11 toward both left and right corners of the upper side when viewed from the front.
2.12 and the upper edge (hereinafter referred to as the "upper fan-shaped part").

The lower reflective surface 6 has a dividing line 1 extending from the lower part of the opening edge of the insertion hole 11 toward both left and right corners of the lower side when viewed from the front.
3.13 and the lower edge (hereinafter referred to as "lower fan-shaped part J").

Further, the left and right sides of the partial reflective surface 7.8 are limited by the left and right opening edges of the insertion hole 11 and a dividing line 14.14 extending vertically from the opening edges to the left and right side edges slightly closer to the center than the center, A sector-shaped part (hereinafter referred to as "left-hand door-shaped part", "left side door-shaped part", "
"Right fan-shaped part." ).

The left and right sides of the partially reflective surface 9.10 are defined by a dividing line 15.15 that extends vertically at a slight interval outside the dividing line 14.14, and the left and right side edges, and the upper and lower sides are divided by the dividing line 15.15. s12
．． 12 and 13.13 (hereinafter referred to as
They are called the "left outer part" and the "right outer part." ).

(c. Light bulb) In this embodiment, a so-called H4 type light bulb 3 of European standard is used as a light source.

The light bulb 3 includes a glass bulb 16, a cap 17 attached to the rear end of the glass bulb 16, two filaments 18 and 19 sealed in the glass bulb 16, and a light-shielding cap covering approximately the lower half of one of the filaments 19. 20, and a light-shielding paint 21 is applied to the front end of the glass bulb 16. The two filaments 18 and 19 each have a coil shape and are arranged so as to extend along the axis of the glass bulb 16, with the filament 19 arranged in front of the filament 18.

Such a light bulb 3 is attached to the reflecting mirror 2 by suitable means (not shown), and its glass bulb 16 is placed inside the reflecting mirror 2 through the insertion hole 11. And filament 18
becomes the filament for the traveling beam, and filament 1
Reference numeral 9 indicates a filament for the passing beam, and each filament is arranged at a predetermined position in an attitude substantially parallel to the irradiation axis x-x.

The light shielding cap 20 shields the low beam filament 19 from substantially the lower half of the reflective surface, so that only the light from the low beam filament 19 that is reflected on the road half of the reflective surface is directed forward. It is emitted to

In addition, the light shielding paint 21 formed on the front end of the glass bulb 16 of the light bulb 3 shields each filament 18.19 from the front, so that the light from each filament 18.19 is reflected by the reflecting mirror 2. Only things are illuminated in front.

(d. Lens) A suitable lens element is formed in the lens 4 and is arranged so as to cover the front surface of the reflecting mirror 2.

(F-2, First Embodiment) [Figures 6 to 10 (a, Configuration) Figures 6 to 10 show the first embodiment IA of the automobile headlamp of the present invention. Of the partial reflection surfaces, the left and right fan-shaped portions 7.8 form parabolic-elliptic compound surfaces, and the remaining partial reflection surfaces 5.6.9.10 form paraboloids.

Here, a parabola-ellipse compound surface is a parabola in the - cross section, an ellipse in another cross section perpendicular to the above cross section, and the focus of the parabola and the first focus of the ellipse coincide (this Therefore, the light emitted from a light source placed at this focal point and reflected by the parabola-elliptic compound surface travels within the cross section of the parabola in a direction perpendicular to the axis of the parabola. The light is focused on a line (hereinafter referred to as the "condensing line") that extends to the ellipse and passes through the second focal point of the ellipse.

The condensing line F7 of the parabola-elliptic compound surface reflecting surface 7 and the condensing line F6 of the parabola-elliptic compound surface reflecting surface 8 are respectively positioned as shown in the figure, and when viewed from the front view, the condensing line Fa is vertically Ray F7 is inclined at an angle of about 15° to the left with respect to the vertical.

The focal point of each partial reflecting surface is that the focal point f of the lower fan-shaped portion 6 is approximately at the center of the traveling beam filament 18, and the focal point of the other partial reflecting surfaces 5, 7, 8, 9, 10 is the traveling beam. filament 18 for passing beam and filament 1 for passing beam
It is located at a point f2 approximately midway between 9 and 9.

Also, the rotation axis of the partial reflection surface 5.6.9.10 is the irradiation axis x
−x, and the rotation axis xy of the left and right fan-shaped portions 7.8
-x, % X6-X6 is slightly opened with respect to the irradiation axis
-Xa is tilted to the left toward the front.

(b. Light distribution pattern) In the above automobile headlamp IA, when each filament 18, 19 lights up, the arrangement as shown in FIGS. A light pattern is obtained.

FIG. 10(A) shows a light distribution pattern 22 when the traveling beam filament 18 is lit, and FIG. 10(B) shows a light distribution pattern 23 when the passing beam filament 19 is lit. .

Incidentally, Fig. 10 shows the light distribution pattern reflected on the screen placed in front of the automobile headlamp IA.
The V line is a line extending vertically through a point corresponding to the center of the car on which the automotive headlamp IA is installed, and the H-H line is a horizontal line passing through a point corresponding to the center of the automotive headlamp IA. It is a line that extends.

Note that the same applies to the following diagrams showing light distribution patterns.

In the light distribution pattern 22 in FIG.
27 is the light distribution portion due to the reflected light from the elliptical composite surface reflecting surface 7; 27 is the light distribution portion due to the reflected light from the parabolic-elliptical composite surface reflecting surface 8; 28 is the light distribution due to the reflected light from the left and right outer portions 9.10. It is a part. As can be clearly seen from this light distribution pattern 22, the reflected light from the parabolic-elliptic compound surface reflecting surface 7.8 is once condensed by the condensing lines Fy and Fa, and then diffused approximately in the horizontal direction. The inner ends of these light distribution parts 26, 27 extend to the center and contribute to the central luminous intensity. The reason why the light distribution portion 26 is inclined is because the light condensing line F7 of the parabolic-elliptical composite surface reflecting surface 7 is inclined at an angle of about 15 degrees with respect to the vertical line.

Next, in the light distribution pattern 23 of FIG. 10(B), 2
Reference numeral 9 indicates a light distribution portion due to reflected light from the upper fan-shaped portion 5, 30 indicates a light distribution portion due to reflected light from the left parabolic-elliptic composite surface reflecting surface 7, and 31 indicates reflected light from the right parabolic-elliptical compound surface reflecting surface 8. 32.32 is the left and right outer part 9.1
This is the light distribution portion due to reflected light at 0. In this light distribution pattern 23 as well, the light distribution portions 30 and 31 are long approximately left and right, and
Their inner ends extend to the center and overlap, contributing to the center luminosity. The light distribution portion 30 extends from the center toward the upper left at an angle of approximately 15° with respect to the horizontal line H-H.

In this way, in this automobile headlamp IA, the light distribution pattern without passing through the lens 4 allows for the V-v line and the H-H line.
Since there is sufficient light at or near the center where the lines intersect, the load on the lens is reduced when obtaining the desired light distribution pattern, and even in places where there are various constraints regarding the lens, irradiation with the desired light distribution pattern is possible. It becomes possible to do this.

(c, Modification) In the first embodiment IA, the upper fan-shaped portion 5 is also a parabola-ellipse compound surface so that its condensing line is approximately perpendicular and its rotation axis coincides with the irradiation axis x-x. By doing so, the 10th
Light distribution patterns 33 and 34 shown in FIGS. (C) and (D) are obtained.

That is, in both the light distribution pattern 33 of the traveling beam and the light distribution pattern 34 of the passing beam, the light distribution portions due to the reflected light from the upper fan-shaped portion 5 become horizontally long patterns such as 24' and 29', which are more ultimately desired. The light distribution pattern of the running beam becomes close to that of the passing beam,
The load on the lens 4 is further reduced.

(F-3 Second Embodiment) [Figures 11 to 15] (a, Configuration) Figures 11 to 15 show a second embodiment IB of the automobile headlamp of the present invention. , 9.10 of the partially reflective surfaces form a parabola-ellipse compound surface, and the remaining partially reflective surfaces 5.6.
7.8 forms a paraboloid. The condensing line F of the parabolic-elliptical composite surface reflecting surface 9 and the condensing line FIO of the parabolic-elliptical composite surface reflecting surface 1o are respectively positioned perpendicularly as shown.

The focal point of each partial reflecting surface is that the focal point f1 of the lower fan-shaped portion 6 is approximately at the center of the filament 18 for the traveling beam, and the focal point of the other partial reflecting surface 5,7,8,9,10 is for the traveling beam. Filament 18 and passing beam filament 1
It is located at a point f2 approximately midway between 9 and 9.

Also, the rotation axis of the partial reflection surface 5.6.7.8 is the irradiation axis
It coincides with
The rotational axes X g -X 11 , X 1G-X 10 are slightly different from the irradiation axis X-X, that is, Xs-Xs is forward to the right, and X,. -X,. is slanted to the left toward the front.

(b. Light distribution pattern) In the automobile headlamp IB, when each of the filaments 18 and 19 is lit, the arrangement as shown in FIGS. A light pattern is obtained.

FIG. 15(A) shows a light distribution pattern 36 when the traveling beam filament 18 is lit, and FIG. 15(B) shows a light distribution pattern 37 when the passing beam filament 19 is lit. .

In the light distribution pattern 36 of FIG. 15(A), 38 is a light distribution portion due to reflected light from the upper fan-shaped portion 5, and 39 is a light distribution portion of the lower m1.
40 is the light distribution portion due to the reflected light at the fan-shaped portion 6 on the left side, 41 is the light distribution portion due to the reflected light on the right side fan-shaped portion 8, and 42 is the left parabola-ellipse composite. A light distribution portion 43 is a light distribution portion due to the light reflected by the surface reflecting surface 9, and a light distribution portion 43 is a light distribution portion due to the light reflected from the right side parabolic-elliptic composite surface reflecting surface 10. As can be clearly seen from this light distribution pattern 36, the reflected light from the parabolic-elliptic composite surface reflection surfaces 9 and 10 is once focused on the light lines F9, F, respectively. After condensing at
The inner ends of these light distribution portions 42 and 43 extend to the center and overlap to contribute to the center luminous intensity.

Next, in the light distribution pattern 37 of FIG. 15 CB), 4
4 is a light distribution portion due to reflected light from the upper fan-shaped portion 5, 45 is a light distribution portion due to reflected light from the left fan-shaped portion 7, 46 is a light distribution portion due to reflected light from the right fan-shaped portion 8, and 47 is a left parabola − Light distribution portion due to reflected light on elliptical composite surface reflective surface 9, 4
Reference numeral 8 denotes a light distribution portion due to reflected light from the right side parabolic-elliptical composite surface reflecting surface 10. In this light distribution pattern 37 as well, the light distribution portions 47 and 48 are long substantially in the left and right directions, and their inner ends extend to the center and overlap, contributing to the central luminous intensity.

The upper edge 45a of the light distribution portion 45 is inclined upward to the left because the left shoulder of the light shielding cap 20 is aligned with the irradiation axis X-X.
This is because the left fan-shaped portion 7 is irradiated with the light from the low beam filament 19 from its upper end to the center and from the center to just below.

In this way, even with this automobile headlamp IB, the light distribution pattern without passing through the lens 4 allows for ■-V line and H-H line.
Since there is sufficient light at or near the center where the lines intersect, the load on the lens is reduced when obtaining the desired light distribution pattern, and even in places where there are various constraints regarding the lens, irradiation with the desired light distribution pattern is possible. It becomes possible to do this.

(c, Modification) In the second embodiment IB, the upper fan-shaped portion 5 is also a parabola-ellipse compound surface, and its rotation axis is aligned with the irradiation axis X-x so that its condensing line is approximately perpendicular. By doing so, the 15th
Light distribution patterns 49.50 shown in FIGS. (C) and (D) are obtained.

That is, in both the light distribution pattern 49 of the traveling beam and the light distribution pattern 50 of the passing beam, the light distribution portion due to the reflected light from the upper fan-shaped portion 5 becomes a horizontally long pattern such as 38'44', which is more ultimately desired. The light distribution pattern of the running beam becomes close to that of the passing beam,
The load on the lens 4 is further reduced.

(F-4, Third Embodiment) [Figures 16 to 20 (a, configuration) Figures 16 to 20 show the third embodiment IC of the automobile headlamp of the present invention. So, 5 of the partially reflecting surfaces form a parabolic-elliptic compound surface, and the remaining partially reflecting surfaces 6.7.8.9
．． 10 forms a paraboloid. The condensing line F of the parabolic-elliptical composite surface reflecting surface 5 is positioned vertically as shown.

The focal point of each partial reflecting surface is that the focal point f of the lower fan-shaped portion 6 is approximately at the center of the traveling beam filament 18, and the focal point of the other partial reflecting surfaces 5, 7, 8, 9, and 10 is for the traveling beam. filament 18 for passing beam and filament 1 for passing beam
It is located at a point f2 approximately midway between 9 and 9.

Further, the rotation axes of the partial reflection surfaces 5.6.7.8.9.10 all coincide with the irradiation axis XX.

(b. Light distribution pattern) In the above automobile headlamp IC, when each filament 18, 19 is lit, a light distribution pattern as shown in FIG. 20 is obtained without passing through the lens 4.

FIG. 20(A) shows a light distribution pattern 51 when the running beam filament 8 is lit, and FIG. 20(B) shows a light distribution pattern 52 when the passing beam filament 19 is lit. be.

In the light distribution pattern 51 of FIG. 20(A), 53 is a light distribution portion due to the light reflected by the parabolic-elliptic composite surface reflecting surface 5;
54 is a light distribution portion based on reflected light from the lower fan-shaped portion 6; 55
56 is a light distribution portion due to reflected light from the left fan-shaped portion 7, 56 is a light distribution portion due to reflected light from the right side fan-shaped portion 8, and 57 is a light distribution portion due to reflected light from the left and right outer portions 9.10. As can be clearly seen from this light distribution pattern 51, a parabola -
The reflected light from the elliptical composite surface reflection surface 5 is once focused on the condensing line F, and then diffused approximately in the horizontal direction, forming a substantially horizontally elongated light distribution portion 53. A light distribution pattern 51 with light is formed.

Next, in the light distribution pattern 52 of FIG. 20(B), 5
Reference numeral 8 indicates a light distribution portion due to reflected light from the parabolic-elliptical composite surface reflecting surface 5, 59 indicates a light distribution portion due to reflected light from the left fan-shaped portion 7, 60 indicates a light distribution portion due to reflected light from the right fan-shaped portion 8, 6
1.61 is a light distribution portion due to reflected light from the left and right outer portions 9.10. Even in this light distribution pattern 52, the light distribution portion 5
8 is long substantially from side to side, so the light distribution pattern 52 has sufficient light even in the center.

The upper edges 59a, 61a of the light distribution portions 59.61 are inclined upward to the left because the left shoulder of the light shielding cap 20 is located below the horizontal plane passing through the irradiation axis x-x. This is because the left fan-shaped portion 7 and the left outer portion 9 are irradiated with light from the passing beam filament 19 from the upper end to the center and from the center to the bottom.

In this way, even with this automobile headlamp IC, the light distribution pattern without passing through the lens 4 allows the V-■ line and the H-H
Since there is sufficient light at or near the center where the 19 intersects, the load on the lens is reduced when obtaining the desired light distribution pattern, and even if there are various constraints regarding the lens, the desired light distribution pattern can be irradiated. It becomes possible to do this.

(G. Effects of the Invention) As is clear from the above description, the automobile headlamp of the present invention includes a reflecting mirror, a lens that covers the front surface of the reflecting mirror, and a light source, and the reflecting mirror has a reflecting surface that is comprising at least six partially reflective surfaces, including upper and lower fan-shaped portions with the main portion approximately at the center, left and right fan-shaped portions closer to the center between the upper and lower fan-shaped portions, and outer portions located outside the left and right fan-shaped portions; At least one of the partial reflective surfaces is a parabola-elliptic compound surface that forms a parabola in a substantially vertical cross section and an ellipse in a substantially horizontal cross section, and the other partial reflective surface is a paraboloid, and each part The focal point of the reflective surface is located close to the reflective surface, and the light source is arranged near the focal point of the partially reflective surface.

Therefore, in the automobile headlamp of the present invention, since the pattern of light reflected by the parabolic-elliptic composite surface of the partially reflecting surface of the reflector covers the center, the light that goes to the center of the light distribution pattern can be increased compared to the conventional method, and the center luminous intensity of the light distribution pattern can be increased without overdoing it.

[Brief explanation of the drawing]

Figures 1 to 5 show the basic structure of the automobile headlamp of the present invention, with Figure 1 being a front view and Figure 2 showing II of Figure 1.
3 is a sectional view taken along the line III-I of FIG. 1.
4 is a front view of a reflecting mirror, FIG. 5 is an enlarged perspective view of a light bulb, and FIGS. 6 to 10 show a first embodiment of the automobile headlamp of the present invention. Fig. 6 is a front view of the reflecting mirror, Fig. 7 is a schematic perspective view, Fig. 8 is a schematic vertical sectional view, Fig. 9 is a schematic horizontal sectional view, Fig. 10 is a light distribution pattern diagram, and Fig. 11 is a schematic horizontal sectional view. Figures 15 to 15 show a second embodiment of the automobile headlamp of the present invention, and Figure 11 is a front view of the reflector;
Fig. 12 is a schematic perspective view, Fig. 13 is a schematic vertical sectional view,
FIG. 4 is a schematic horizontal sectional view, FIG. 15 is a light distribution pattern diagram, FIGS. 16 to 20 show a third embodiment of the automobile headlamp of the present invention, and FIG. Front view, No. 17
The figure is a schematic perspective view, FIG. 18 is a schematic vertical sectional view, FIG. 19 is a schematic horizontal sectional view, FIG. 20 is a light distribution pattern diagram, and FIGS. 21 to 24 are examples of conventional automobile headlamps. Fig. 21 is a front view, Fig. 22 is a horizontal sectional view, Fig. 23 is a perspective view, and Fig. 24 shows a reflecting mirror and its light distribution pattern.
The figure is a light distribution pattern diagram. Description of symbols IA...Car headlight, 2...Reflector, 4...Lens, 5...Upper fan-shaped part, 6...Lower fan-shaped part, 7...Left fan-shaped part (Parabola-ellipse composite surface), 8...Right fan-shaped part (parabola-ellipse compound surface), 9...Left outer part, 10...Right outer part, 18.19...Light source, f. f2...Used 1B...Car headlight, 2...Reflector, 4...Lens, 5...Upper fan-shaped part, 6...Lower fan-shaped part, 7... Left fan-shaped part, 8...Right sector part, 9...Left outer part (parabola-ellipse compound surface), 10...Right outer part (parabola-ellipse compound surface), 18, 19... Light ( Hara, f,, f2 ・
・・Used IC・・Automobile headlight 2・・Reflector 4・・Lens 5・・Upper fan-shaped part (parabola-ellipse compound surface) 6・・Lower fan-shaped part , 7...Left fan-shaped part, 8...Right fan-shaped part, 9...Left outer part, 10...Right outer part, 18.19...Light source, fl, f2...Choice section Fig. c 1t-X-ray) Fig. 3 Enlarged chapter view of a light bulb Fig. 5 - Go -〇HeC) ■9 - Hegui no To ■9 Shigu soft c! ! N-waku. ,■9 Summon one~to cocn C2 Riichie I Ln COr"-no no 9 ;0ゞ-noto no 09 wisely (j
o r＋−■１＼＼＼〜L−の. ♀Cheap (+07) Front view (conventional example) Fig. 21 Horizontal sectional view (conventional example) Fig. 22

Claims (1)

[Claims] The reflecting mirror includes a reflecting mirror, a lens that covers the front surface of the reflecting mirror, and a light source, and the reflecting surface of the reflecting mirror has an upper and lower fan-shaped part where the main part is approximately at the center, and a left and right fan-shaped part that is closer to the center between the upper and lower fan-shaped parts. and at least six partial reflective surfaces of the outer portion located outside the left and right fan-shaped portions, at least one of the partial reflective surfaces forming a parabola in a substantially vertical cross section and forming an ellipse in a substantially horizontal cross section. It consists of a parabolic-elliptical compound surface, the other partially reflecting surfaces are made of paraboloids, the focal points of each partially reflecting surface are located close to each other, and the light source is arranged near the focal point of the partially reflecting surface. Automobile headlights with