JPH08264005A - Head light for automobile - Google Patents

Abstract

PURPOSE: To provide a head light for a vehicle, which has the simple structure and of which assembling and incorporation to a car body and aiming adjustment are facilitated, by unifying members of a head lamp and a fog lamp. CONSTITUTION: A first paraboloidal reflector 21 for luminous intensity distribution of a low beam head lamp A and a second paraboloidal reflector 22 for luminous intensity distribution of a fog lamp B are integrally formed adjacent to each other in the right and left to form a reflector member 20, and this reflector member 10 is housed in a lamp body 10. The reflector member 10 is supported on an aiming mechanism 30 (screws 34, 36 and a ball joint 32), which is interposed between the reflector member 20 and the lamp body 10, so that the tilting thereof can be freely adjusted. The lamp body, the reflector member and the aiming mechanism are thereby singly formed to reduce the number of items of lighting fixture members, and the lighting structure is simplified, miniaturized to facilitate the assembling of the lighting fixture and incorporation thereof to a car body, and the aiming adjustment is facilitated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle headlamp in which a low beam headlamp and a fog lamp are integrated.

[0002]

2. Description of the Related Art Both headlamps and fog lamps are mounted on the front part of an automobile. Conventionally, as shown in FIGS. 9 to 11, a headlamp a and a fog lamp b are provided adjacent to each other. Headlights are known. The headlamp a and the fog lamp b are provided with a reflector 2a having a bulb 3a (3b) as a light source inserted therein.
(2b) is housed in the lamp body 1a (1b), and a pair of aiming screws 5a (5b), 6a are provided between the reflector 2a (2b) and the lamp body 1a (1b).
An aiming mechanism composed of (6b) and a ball joint 7a (7b) forming a swing fulcrum is interposed, and each aiming mechanism independently adjusts the tilting of the reflector 2a (2b) vertically and horizontally (ramp). Optical axis La of
Lb can be adjusted).

Reference numeral 8a (8b) is a lamp body 1a.
Reference numeral 2a ₁ is a front lens attached to the front opening of (1b), and reference numeral 2c is a frame-shaped extension reflector disposed on the front surface of the reflector 2a to hide the gap between the lamp body 1a and the reflector 2a. , 2a
₂ is a bracket protruding in an L-shape on the back of the reflector 2a, collect-nut 5a _1, which is fitted to the bracket 2a ₁ is the aiming screw 5a and screwed, is fitted to the bracket 2a ₂ The part 7a ₂ is the lamp body 1
The structure is such that the ball portion 7a ₁ fixed to a is supported.

[0004]

However, in the above-mentioned prior art, since the lamp body and the reflector are independent of each other in the lamp, the number of parts is large and the mounting space for the vehicle body is large. There is also a problem that it takes time to attach the lamps to each lamp independently.

Further, each lamp has an independent aim.
Aiming adjustment for each lamp because it has a lighting mechanism
Must be done, but a little of the aiming screw
The optical axes La and Lb change greatly even by such a large rotation.
Therefore, make sure that the optical axes La and Lb of both lamps match.
The task of adjusting the iming was very troublesome. Riff
The lector 2a is composed of a synthetic resin injection molded body.
However, the front-back direction with respect to the reflector 2a (Fig. 11 left
If you try to mold with a mold that can be released to the right)
Bracket 2 formed on the back surface of the lector 2a
a₁, 2a ₂Area P between the reflector and the reflector 2a₁, P₂But
The reflector 2a is molded because it becomes the undercut part
Mold that can be released in the front-back direction of the reflector
In Fig. 11, the undercut part that can slide vertically
Complex and large mold incorporating slide mold for molding
There was also a problem that was necessary.

The present invention has been made in view of the above-mentioned problems of the prior art. The first object of the present invention is to integrate the constituent members of the headlamp and the fog lamp into a simple structure, which results in an assembly and a vehicle body. An object of the present invention is to provide a vehicle headlamp that can be easily mounted on and adjusted for aiming. A second object of the present invention is to make it possible to mold a reflector forming member having a vertical standing wall for disposing an aiming mechanism constituent member without using a slide mold structure.

[0007]

In order to achieve the first object, in a vehicle headlight according to claim 1, a first parabolic reflector that contributes to the formation of a light distribution of a headlamp. And a second parabolic reflector that contributes to the formation of the light distribution of the fog lamp are laterally adjacent to each other and integrally formed, and a reflector constituting member is housed in a single lamp body, and the reflector constituting member is attached to the reflector. The tilting adjustment is supported by one aiming mechanism interposed between the constituent members and the lamp body. According to a second aspect of the present invention, in the vehicle headlamp according to the first aspect, one tilting fulcrum, an up-down adjustment aiming screw, and a left-right adjustment are provided on the first parabolic reflector formation side of the reflector constituent member. It is designed to be supported by an aiming mechanism composed of an aiming screw. In order to achieve the second object, according to claim 3, in the vehicle headlamp according to claim 2, the first part of the reflector component member is provided.
The reflector and the second reflector are formed so as to be separated from each other in the left-right direction by a predetermined distance, and a part of the standing wall forming the reflector separation region is located rearward of the opening ends of the first reflector and the second reflector. It is formed, and a part of the aiming mechanism constituting member is arranged on the standing wall lowered to the rear. According to a fourth aspect of the present invention, in the vehicle headlamp according to the third aspect, an extension reflector that conceals a gap between the lamp body and the reflector component and the reflector separation region is provided in front of the reflector component. Is. In the vehicle headlamp according to claim 5, a first parabolic reflector that contributes to the formation of the light distribution of the low beam headlamp and a second parabolic reflector that contributes to the formation of the light distribution of the fog lamp. A lamp body / reflector unit integrally formed on the left and right is housed in a single lamp housing, and the lamp body / reflector unit is interposed between the lamp body / reflector unit and the lamp housing. The aiming mechanism is used to support tilt adjustment.

[0008]

The lamp body, the reflector constituting member, and the aiming mechanism (in the claim 5, the lamp body / reflector unit and the aiming mechanism), which have been separately provided for each of the lamps which constitute the headlamp, are respectively provided as headlamps. As the number of parts that make up the headlight is small,
The structure is simple, the lamp is small, and the space for assembling the lamp in the vehicle body is small, so that the assembling work of the lamp and the assembling work to the vehicle body are easy. Further, the headlamp reflector and the fog lamp reflector are integrated as a reflector constituent member (in claim 5, the headlamp reflector and the fog lamp reflector are integrated as a lamp body / reflector unit) to provide one aiming Since the mechanism can tilt integrally, the aiming adjustment work becomes easy. In the present invention, the reflector of the headlamp, which is generally larger and heavier than the reflector of the fog lamp, that is, the first reflector forming region side is supported by an aiming mechanism including a pair of aiming screws and one swing fulcrum. Therefore, the reflector constituent member can be smoothly tilted, and there is no possibility that the reflector constituent member will oscillate (the cut-off line in the light distribution pattern created by the headlight will oscillate) due to vibration or the like transmitted from the vehicle body. In Claim 3, a part of the standing wall that does not function as a reflector between the first reflector and the second reflector in the reflector constituent member is formed behind the opening ends of the first reflector and the second reflector, Since it has a structure in which a part of the aiming mechanism constituting member is arranged on the standing wall lowered to, in molding the reflector constituting member, the periphery of the standing wall for disposing the aiming mechanism constituting member does not become an undercut portion, The reflector constituent member can be molded by a pair of molds that can be released only in the front-rear direction. According to the fourth aspect, the extension reflector hides the gap between the lamp body and the reflector forming member and the inter-reflector region in which the standing wall for disposing the aiming mechanism constituting member is hidden, so that the entire interior of the lamp chamber is made to have a bright mirror surface color.

[0009]

Embodiments of the present invention will now be described with reference to the drawings. 1 to 6 show an automotive headlamp that is an embodiment of the present invention, and an embodiment in which the present invention is applied to a reflector-movable headlight. FIG. 1 is a front view of the headlight. Figure, Figure 2
Is a horizontal sectional view of the headlight (a sectional view taken along line II-II shown in FIG. 1), and FIG. 3 is a vertical sectional view of the headlight (line III shown in FIG. 1).
-III), FIG. 4 is a vertical sectional view of the headlamp (a sectional view taken along line IV-IV shown in FIG. 1), and FIG. 5 is a vertical sectional view of the headlamp (shown in FIG. 1). FIG. 6 is a horizontal cross-sectional view (cross-sectional view taken along line VI-VI shown in FIG. 1) at a position where the aiming screw for vertical adjustment of the headlight is arranged.

In these drawings, reference numeral 10 is a container-shaped lamp body having a front opening, and a front lens 12 is assembled to a rectangular front opening of the lamp body 10 to form the lamp body 10 and the front lens 12. The light room space is formed by. In the lamp chamber space, a first parabolic reflector 21 that contributes to the formation of the light distribution of the headlamp A and a first parabolic reflector 21 that contributes to the formation of the light distribution of the fog lamp B have a lateral width smaller than that of the first reflector 21. A parabolic reflector 22 having two parabolic reflectors 22 is laterally separated from each other by a predetermined distance, and the reflector constituting member 20 integrally formed therein is housed. Reference numeral 20a is an inter-reflector region that does not function as a reflector and is formed between the reflectors 21 and 22 at a substantially central portion in the left-right direction of the reflector component member 20.
Reference numerals b and 20c are left and right side edge regions that do not function as reflectors formed on the left and right side edge portions of the reflector component member 20.

Bulb insertion holes 23 and 24 are formed in the rear apexes of the reflectors 21 and 22, respectively, and bulbs 25 and 26 which are light sources are inserted into the bulb insertion holes 23 and 24, respectively. The bulb 25 has two filaments spaced apart in the front-rear direction, and the light distribution of the traveling beam is formed by the emission of the filament at the rear position that corresponds to the focal position of the reflector 21, and the position slightly forward of the focal position of the reflector 21. The light distribution of the passing beam is formed by the light emission of the filament at.

The reflector component member 20 is provided with a lamp body 10 by an aiming mechanism 30 including one ball joint 32 and two aiming screws 34 and 36 (up and down adjusting aiming screws 34 and left and right adjusting aiming screws 36). It is supported so that it can be tilted vertically and horizontally with respect to the aiming screw 34,
By rotating 36, the reflector component 20
Has a structure capable of tilting about the horizontal axis Lx and the vertical axis Ly.

That is, the ball joint 32 includes the standing wall 2 formed in the inter-reflector region 20a of the reflector constituting member 20.
The ball portion 33a fixed to 7 is supported by the ball receiving portion 33b formed on the back wall of the lamp body 10, and constitutes the tilt fulcrum of the reflector constituting member 20 (reflectors 21, 22). . Also aiming screw 3
4 and 36 are rotatably supported on the back wall of the lamp body 10 and extend through the back wall of the lamp body 10 in the front-rear direction, and the screw front end portions have the reflectors 21, 22 of the reflector constituting member 20. The nuts 35 fitted to the regions (the standing walls 28 formed in the inter-reflector region 20a, the side edge regions 20c) that do not function as
The structure is screwed to 37. The ball joint 32 and the aiming screws 34 and 36 are arranged so as to be orthogonal to each other as shown in FIG. 1, and when the aiming screws 34 and 36 are rotated, the nuts 35 and 37 are It moves back and forth along the aiming screws 34, 36, and the reflector component member 20 (reflector 2
1, 22) are integrally tilted about the horizontal axis Lx (the axis passing through the ball joint 32 and the nut 37) and the vertical axis Ly (the axis passing the ball joint 32 and the nut 35), respectively, and the headlamp A and the fog lamp B are The structure is such that the optical axes L ₁ and L ₂ can be integrally tilted vertically and horizontally.

The reflector constituting member 20 is an integrally molded body of synthetic resin, and on the back side of the reflector constituting member 20, a vertical standing wall 27 for attaching a ball portion 33a of a ball joint 32 and an aiming screw 34 for vertical adjustment are attached. Although the vertical standing wall 28 for mounting the nut 35 to be screwed is provided, in this embodiment, by forming a cylindrical rear bulging portion that opens forward in the vertical position of the inter-reflector region 20a, the inter-reflector space is formed. Predetermined upper and lower portions of the region 20a forming wall are formed at positions rearward of front opening portions (opening ends) of the reflectors 21 and 22, and a bulging vertical end surface of the rear bulging portion (a vertical standing wall lowered rearward). ) Form a standing wall 27 for disposing the ball joint 32 and a standing wall 28 for mounting the nut 35.

That is, in this embodiment, the peripheral regions of the standing walls 27, 28 for disposing the aiming mechanism are the reflector constituent members 2.
Since it does not become an undercut part when molding 0,
The reflector constituent member 20 can be molded using a mold having a structure capable of releasing only in the front-back direction (the vertical direction in FIG. 2, the horizontal direction in FIG. 3). The rear bulging portions forming the standing walls 27 and 28 also have the effect of increasing the rigidity strength of the reflector constituting member 20 by increasing the section modulus of the flat inter-reflector region 20a.

Reference numeral 18 is sandwiched between the front opening of the lamp body 10 and the front lens 12, and the reflector constituting member 20 (reflectors 21, 22) and the lamp body 1 are provided.
It is an extension reflector in the shape of a rectangular frame extending so as to hide the gap between 0s, the inter-reflector region 20a, and the left and right side edge regions 20b, 20c. That is, the extension reflector 18 extends along the inside of the side wall of the lens 12, and has a predetermined front-back length where the outer edges including the left and right side edge regions 20b and 20c of the reflector constituting member 20 are hidden when viewed from the front. Strip-shaped extending portion 18a ₁
In the skirt-shaped extension reflector body 18a in which the strips are formed, the strip-shaped region 18 that extends vertically corresponding to the inter-reflector region 20a of the reflector constituting member 20.
It is a synthetic resin integrally molded body having a structure in which b is coupled. The surface of the extension reflector 18 is subjected to the same aluminum vapor deposition process as the reflectors 21 and 22, so that the entire interior of the lamp interior looks like a deep metallic color when it is not lit and has a good appearance. Has become.

In front of the valves 25 and 26, the valve 2
The light from the filaments 5 and 26 that goes to areas other than the predetermined effective reflection surfaces of the reflectors 21 and 22 is shielded to contribute to the formation of a predetermined light distribution and direct light is emitted from the front lens 12. A shade 40, 42 is provided to prevent it. Shades 40, 42 have legs 41, 43
(See FIGS. 4 and 5), while the reflector component member 20 (reflectors 21, 22) is provided with bosses 21a, 2
2a is erected, the legs 41 and 43 are screwed to the bosses 21a and 22a, and the shades 40 and 42 are fixedly integrated with the reflector constituting member 20 (reflectors 21, 22).

At the position facing the bulb insertion holes 23, 24 on the rear wall of the lamp body 10, the opening 10 for replacing the bulb is provided.
a and 10b are provided, and the openings 10a and 10b are provided.
Are rubber dustproof and waterproof covers 11a and 11b, respectively.
Is installed. Further, as shown in FIG. 6, a valve insertion hole 10c is provided in the vicinity of the bulb replacement opening 10b of the fog lamp B, and the clearance lamp bulb 50 inserted into the hole 10c is attached to the reflector 22.
The clearance lamp C is configured so as to pass through the hole 22a formed in the front and project forward.

On the left side of the lamp body 10 (the left side when viewed from the front), a bulb 55, which is a light source, is attached to a shallow container-shaped lamp body 54, and an amber-colored front surface is provided in a front opening portion of the lamp body 54. A side turn signal lamp D in which the lens 56 is assembled and integrated is arranged. An inner lens 57 having a prism step is arranged inside the front lens 56 so that the light from the bulb 55 can be distributed over a wide range to the side of the vehicle body.

FIGS. 7 and 8 show an automobile headlamp according to a second embodiment of the present invention, in which the present invention is applied to a unit movable headlamp, and FIG. FIG. 8 is a front view of the headlight, and FIG. 8 is a horizontal sectional view of the headlight (line VIII- shown in FIG. 7).
FIG. 8 is a sectional view taken along line VIII). Reference numeral 60 denotes a container-shaped lamp body having an opening on the front surface. On the inner peripheral surface of the lamp body 60, a first parabolic reflector 61 that contributes to the formation of light distribution of the headlamp A ₁ and a fog lamp B _{1 are provided.} The second parabolic reflector 62 that contributes to the formation of the light distribution is integrally formed adjacent to the left and right. Reflector 61,
Bulb insertion holes 63 and 64 are formed at the rear top of the bulb 62, and the bulb insertion holes 63 and 64 serve as a light source for the bulb 6
5, 66 are inserted and attached, and the front lens 66 is assembled in the front opening of the lamp body 60 to be integrated as a lamp body / reflector unit U.

Further, the reflector 61 of the lamp body 60
A rear bulge portion that opens to the front is formed in a region that does not function as a reflector between the and the reflector 62 and in the side edge portion (inter-reflector region 60a and reflector side edge region 60c), and the rear bulge portion bulges out. The vertical end surfaces constitute standing walls 67, 68, 69 for disposing the aiming mechanism 30 described later.

The lamp body / reflector unit U is housed in a lamp housing H and is tiltably supported by an aiming mechanism 30 interposed between the unit U and the lamp housing H. The aiming mechanism 30 is rotatably supported by the lamp housing H and has a pair of aiming screws 34 extending forward and backward.
36 and a ball joint 32 that constitutes a swing fulcrum, and the front ends of the aiming screws 34, 36 are fitted to the standing walls 68, 69 lowered to the rear of the inter-reflector region 60a and the reflector side edge region 60c. Nut 3
The ball portion 33a fixed to the standing wall 67, which is screwed to 5, 37 and is lowered to the rear between the reflectors 21 and 22, is supported by the ball receiving portion 33b formed in the lamp housing H. By rotating the aiming screws 34 and 36, the unit U can be tilted about the horizontal axis Lx and the vertical axis Yy, and the optical axis L _{1 of the} headlamp and the optical axis L _{2 of the} fog lamp can be integrally tilted. it can.

Others are the same as those in the first embodiment described above, and the same reference numerals are given to omit duplicated description.

[0024]

As is apparent from the above description, according to the vehicle headlamp of the present invention, the lamp body, the reflector constituting member, and the aiming, which are conventionally different for each lamp constituting the headlamp, are provided. Mechanism (In Claim 5, the lamp body / reflector unit and aiming mechanism)
Since only one headlight is required for each headlight, the number of parts that make up the headlight is small, the structure is simple and the headlight is compact, and the space for mounting the lamp on the vehicle body is also small. Assembly work and assembly work on the vehicle body are also easy. In addition, since the reflector of the headlamp and the reflector of the fog lamp are integrated as a reflector constituent member (in claim 5, the reflector of the headlamp and the reflector of the fog lamp are integrated as a lamp body / reflector unit). With the aiming mechanism, the aiming adjustment of the headlamp and the fog lamp can be performed at the same time, and the conventional work of aligning the optical axes of the headlamp and the fog lamp is completely unnecessary, and the aiming adjustment work becomes very simple. In the second aspect of the present invention, the reflector forming area of the headlamp, which is generally larger and heavier than the reflector forming area of the fog lamp, is supported by an aiming mechanism including a pair of aiming screws and one rocking fulcrum. Therefore, the reflector constituent member can be smoothly tilted, and there is no problem that the reflector constituent member swings (the cut-off line swings) due to the vibration transmitted from the vehicle body or the like.
According to the third aspect, a part of the standing wall in the reflector separation region that does not function as a reflector is lowered rearward, and a part of the aiming mechanism constituting member, for example, the vertical adjusting aiming screw or the swing fulcrum is attached to the rearwardly lowered standing wall. Since it is arranged, there is no undercut portion between the reflector constituent member and the standing wall for arranging the reflector constituent member such as between the conventional reflector and the bracket for disposing the aiming mechanism constituent member. Therefore, without using a slide mold as in the conventional structure, the reflector components are
Molding can be performed using a mold that can be released only in the front-rear direction of the reflector, and the structure of the mold for molding the reflector component is simple and compact, and molding is easy. According to the fourth aspect, the extension reflector hides the parts other than the reflector in the lamp body, and the whole interior of the lamp looks like a bright mirror color, so that it looks good as a headlight.

[Brief description of drawings]

FIG. 1 is a front view of a vehicle headlamp that is an embodiment of the present invention.

FIG. 2 is a horizontal sectional view of the headlight (a sectional view taken along line II-II shown in FIG. 1).

FIG. 3 is a vertical sectional view of the headlight (line III-III shown in FIG. 1).
Cross section along)

FIG. 4 is a vertical cross-sectional view of the headlight (cross-sectional view taken along line IV-IV shown in FIG. 1).

FIG. 5 is a vertical cross-sectional view of the headlight (cross-sectional view taken along line VV shown in FIG. 1).

FIG. 6 is a horizontal cross-sectional view (cross-sectional view taken along the line VI-VI shown in FIG. 1) at a position where the aiming screw for vertical adjustment of the headlight is arranged.

FIG. 7 is a front view of a vehicle headlamp that is a second embodiment of the present invention.

FIG. 8 is a horizontal sectional view of the headlight (line VIII-VI shown in FIG. 7).
Sectional view along II)

FIG. 9 is a front view of a conventional headlamp.

FIG. 10 is a horizontal sectional view of the headlight.

FIG. 11 is a vertical cross-sectional view of the headlight (cross-sectional view taken along line XI-XI shown in FIG. 9).

[Explanation of symbols]

10 lamp body 18 extension reflector 20 reflector constituent member 20a inter-reflector region 20b, 20c which does not function as a reflector side edge region 21 first reflector 22 second reflector 25, 26, 65, 66 light source bulb 27 , 28 Standing wall for disposing the aiming mechanism 30 Aiming mechanism 32 Ball joint 33a which is a member for aiming mechanism 33a Ball portion 33b Ball receiving part 34 Aiming screw for vertical adjustment which is a member for aiming mechanism 35 Nut 36 which is a member for aiming mechanism Aiming Aiming screw for left / right adjustment which is a mechanism constituent member 37 Nuts 40 and 42 which are aiming mechanism constituent members A shade 60 A lamp body 60a A reflector which does not function as a reflector It does not function as a director between the regions 60c reflector side edge region 61 first reflector 62 second reflector A, A ₁ headlamp B, B ₁ fog H lamp housing U lamp body reflector unit

Claims (5)

[Claims] 1. A first parabolic reflector that contributes to the formation of the light distribution of a low beam headlamp and a second parabolic reflector that contributes to the formation of the light distribution of a fog lamp are laterally adjacent to each other and integrated. The reflector constituting member formed in the above is housed in a single lamp body, and the reflector constituting member is tiltably supported by one aiming mechanism interposed between the reflector constituting member and the lamp body. Automotive headlights characterized by. 2. The first parabolic reflector forming side of the reflector constituting member is supported by an aiming mechanism including one tilt fulcrum, an up-down adjusting aiming screw, and a left-right adjusting aiming screw. The vehicle headlamp according to claim 1, wherein 3. A first member of the reflector component member.
The reflector and the second reflector are formed so as to be separated from each other in the left-right direction by a predetermined distance, and a part of the standing wall forming the reflector separation region is located behind the opening ends of the first reflector and the second reflector. 3. A part of the aiming mechanism constituting member is formed on the standing wall which is formed in the rear side and is lowered to the rear.
The described vehicle headlight. 4. In front of the reflector component,
The vehicle headlamp according to claim 3, further comprising an extension reflector that hides a gap between the lamp body and the reflector component member and the reflector separation region. 5. A first parabolic reflector that contributes to the formation of the light distribution of a low beam headlamp and a second parabolic reflector that contributes to the formation of the light distribution of a fog lamp are laterally adjacent to each other and integrated. The lamp body / reflector unit formed in the above is housed in a single lamp housing, and the lamp body / reflector unit is tilted by one aiming mechanism interposed between the lamp body / reflector unit and the lamp housing. An automobile headlight characterized by being supported as much as possible.