JP2534536B2 - Headlight device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The headlight device of the present invention will be described in accordance with the following items.

A. Industrial field of use B. Outline of invention C. Prior art D. Problems to be solved by the invention [Figs. 12 and 13] E. Means for solving problems F. Examples [ 1 to 11] F-1. First embodiment [Figs. 1 to 7] a. Lamp housing, lens, reflector [Figs. 1 to 7]
[Fig.] B. Rotation fulcrum part [Figs. 2 and 4] c. Spacing adjustment unit [Figs. 2, 4 to 7] d. Other spacing adjustment unit e. Operation F-2. Second Embodiment [FIGS. 8 to 11] G. Effects of the Invention (A. Field of Industrial Application) The present invention relates to a novel headlight device. More specifically, a reflector that supports a light source is arranged in a lamp space defined by a lamp housing having a concave portion that opens forward and a lens that is attached to the lamp housing so as to cover the opening. It is supported by the lamp housing by one rotation fulcrum part and two interval adjusting parts. One of the interval adjusting parts has a front end connected to the reflecting mirror and a rear end protruding from the rear surface of the lamp housing. A headlight including an adjusting rod, a drive unit arranged in the lamp housing so as to surround the adjusting rod and moving the adjusting rod in the front-rear direction, and a manual adjusting unit provided on the rear surface of the lamp housing for manually rotating the adjusting rod. It is intended to provide a novel headlight device in which the assembling property of a space adjusting unit including a drive unit and a manual adjusting unit is improved in the lighting device.

(B. Overview of the Invention) In the headlight device according to the present invention, in the headlight device as described above, a non-circular connecting hole having a manual adjustment portion opened at the front end is slidable with the rear end portion of the adjustment rod. The adjusting rod and the driving unit are configured by forming the operating shaft that is connected, the flange formed in the intermediate portion of the operating shaft, and the pressing member that rotatably supports the flange on the outside of the rear wall of the lamp housing. This makes it easy to assemble the manual adjustment unit after it has been assembled to the lamp housing, thereby improving the assemblability of the space adjustment unit including the drive unit in addition to the manual adjustment unit.

(C. Prior Art) A reflecting mirror supporting a light source is arranged in a lamp space defined by a lamp housing having a concave portion opening to the front and a lens attached to the lamp housing so as to cover the opening, The reflecting mirror is supported by the lamp housing by one rotation fulcrum portion and two gap adjusting portions, and one of the gap adjusting portions has a front end connected to the reflecting mirror and a rear end protruding from the rear surface of the lamp housing. A rotatable adjustment rod,
There is a headlight device that includes a drive unit that is disposed in the lamp housing so as to surround the adjustment rod and that moves the adjustment rod in the front-rear direction, and a manual adjustment unit that is provided on the rear surface of the lamp housing and that manually rotates the adjustment rod. .

In such a headlight device, the aiming adjustment is performed by the manual adjustment unit, that is, the irradiation direction before the use is adjusted after the headlight device is assembled to the vehicle body, and the driving unit performs the leveling adjustment, that is, during use. The adjustment is made to correct the deviation of the irradiation direction due to the change in the load at.

As an example of the headlight device as described above, for example,
There is one shown in -99703.

(D. Problems to be solved by the invention) [Figs. 12 and 13
[Fig.] By the way, in the headlight device shown in Japanese Utility Model Laid-Open No. Sho 60-99703, there is a problem that the space adjuster provided with the drive unit in addition to the manual adjuster is not easily assembled. there were.

That is, as shown in FIG. 12 and FIG. 13, the manual adjustment portion of the headlight device is such that the front portion of the operation shaft (11) from the flange (14) is provided on the lamp housing (1). After being inserted into the insertion hole (17) of the shaft mounting portion (16), the washer (19) is fastened to the annular groove (15) formed in the portion of the operation shaft (11) protruding into the lamp housing (1). The operation shaft (11) is rotatably supported by the lamp housing (1).

Thus, in the above-mentioned conventional headlight device,
In order to rotatably support the operation shaft (11) of the manual adjustment part on the lamp housing (1), work inside the lamp housing (1) is required. Therefore, first, the operation shaft is attached to the lamp housing (1). After supporting (11), insert the rear end sliding shaft (23) of the connecting rod (adjustment rod) (22) into the sliding hole (13) of the operating shaft (11), and then drive the drive unit. The procedure of providing the lamp in the lamp housing (1) has to be taken, and there is a problem that the assembling workability is poor.

(E. Means for Solving Problems) In view of the above problems, the present invention provides a reflecting mirror, an adjusting rod,
It was designed to improve the workability of assembling by making it possible to equip the rear part of the lamp housing with a manual adjustment part after the drive part was installed in the lamp housing.The manual adjustment part was opened at the front end. An operating shaft having a non-circular connecting hole slidably coupled to the rear end of the adjusting rod, a flange formed in the middle of the operating shaft, and the flange rotatably outside the rear wall of the lamp housing. It is composed of a pressing member supported on.

Therefore, in the headlight device of the present invention, after the drive section and the adjusting rod are mounted on the lamp housing, the operation shaft is attached to the rear end portion of the adjusting rod protruding from the insertion hole provided in the rear wall of the lamp housing. It suffices to fit the connection hole on the outside and then rotatably support the flange of the operation shaft on the lamp housing by means of the pressing member, and the workability of assembling the spacing adjustment unit including the manual adjustment unit and the drive unit is significantly improved.

(F. Embodiment) [FIGS. 1 to 11] Hereinafter, details of the headlight device of the present invention will be described according to the illustrated embodiments.

(F-1. First Embodiment) [FIGS. 1 to 7] FIGS. 1 to 7 show a first embodiment of the headlight device of the present invention.

(A. Lamp Housing, Lens, Reflecting Mirror) [FIGS. 1 to 7] 1 is a lamp housing made of synthetic resin, the front surface of which is open and the rear portion of which is substantially closed. A lens 2 is attached to the front surface of the lamp housing 1 so as to cover the opening. A reflecting mirror 3 is tiltably supported with respect to the lamp housing 1 in a space formed by the lamp housing 1 and the lens 2.

The reflecting mirror 3 is supported by the lamp housing 1 at three points, one of the supporting portions is a pivotal fulcrum portion, and the other two supporting portions are distance adjusting portions.

(B. Rotating fulcrum part) [Figs. 2 and 4] The rotating fulcrum part 4 is formed as follows.

Reference numeral 5 denotes a shaft body having a base end portion supported by the lamp housing 1 so as to be embedded therein, and a spherical body 6 is integrally formed at a tip end of the shaft body 5. Reference numeral 7 denotes a bracket fixed to the rear surface of the reflecting mirror 3, and a receiver 8 made of synthetic resin is attached to the rear end of the bracket 7. The receiving member 8 has a spherical concave portion 9 having an opening on the rear surface.
Is formed, and the spherical body 6 is fitted in the spherical concave portion 9, and the rotary fulcrum portion 4 in the form of a ball joint is formed therein.

(C. Interval Adjusting Section) [FIG. 2, FIG. 4 to FIG. 7] Next, the interval adjusting section 10 provided at a position laterally separated from the rotation fulcrum section 4 will be described. The interval adjusting unit 10 is an adjusting unit for adjusting the direction of the reflecting mirror 3, that is, the irradiation angle in the left-right direction.

Reference numeral 11 denotes an operation shaft, which is rotatably supported by the lamp housing 1.

The operating shaft 11 includes a shaft portion 12 made of synthetic resin and a metal bolt 13 fixed to a rear end portion of the shaft portion 12.

The shaft portion 12 has a substantially cylindrical shape, and a circular flange 14 is integrally projected at a position near the front end. Further, a connecting hole 15 is formed at the front end portion of the shaft portion 12 and opens to the front end surface, and the connecting hole 15 has a quadrangular cross section. Further, at the rear end of the shaft portion 12, an embedding hole opened on the rear end face.
16 are formed.

The bolt 13 is formed by integrally forming a head 17, an embedded shaft 18 projecting forward from the head 17, and a flange 19 formed between the head 17 and the embedded shaft 18. The outer peripheral surface of the insert shaft 18 is knurled 20,20. The embedding shaft 18 has an outer diameter larger than the inner diameter of the embedding hole 16 of the shaft portion 12. For example, the embedding shaft 18 is press-fitted and fixed in the embedding hole 16 while being subjected to ultrasonic vibration. 12 and bolt 13 are integrated.

Reference numeral 21 is an insertion hole formed in the rear wall 22 of the lamp housing 1, and reference numeral 23 is a surrounding wall projecting from the rear surface of the rear wall 22 so as to surround the insertion hole 21 with a slight distance therefrom.

Reference numerals 24 and 24 denote mounting boss portions projecting from positions on the rear surface of the rear surface wall 22 sandwiching the surrounding wall 23, and screw holes 25, 25 opened at rear end surfaces thereof are formed.

26 is a holding member, which is formed by press forming a metal plate,
The mounting portion 27 and the pressing ring 29 protruding forward from the edge of the insertion hole 28 formed in the mounting plate 27 are integrally formed,
From the front end of the presser ring 29, the ring-shaped presser edge 30 is directed inward.
Are integrally formed.

Reference numeral 31 denotes an annular gasket, which is fitted in the surrounding wall 23 formed on the rear surface of the lamp housing 1.

The front end of the shaft portion 12 of the operation shaft 11 is inserted into the gasket 31 and the insertion hole 21 of the rear surface wall 22 of the lamp housing 1, and the front surface of the flange 14 is brought into contact with the rear surface of the surrounding wall 23. Then, the presser ring 29 of the presser member 26 is moved to the operating shaft 11
Of the mounting boss 24, which is externally fitted to the rear portion of the flange 14 of the mounting plate 27 with the pressing edge 30 abutting the rear surface of the flange 14 of the operating shaft 11 and is inserted through the mounting holes 27a and 27a of the mounting plate 27. It is screwed into 24 screw holes 25, 25.

As described above, the operating shaft 11 is rotatably supported by the lamp housing 1.

Reference numeral 33 is an adjusting rod that connects the lamp housing 1 and the reflecting mirror 3 to each other, and a sliding shaft portion 34 in the latter half portion and a screw shaft portion 35 in the middle portion are integrally formed. The sliding shaft portion 34 has a non-circular (quadrangle in the embodiment) cross-sectional shape that matches the cross-sectional shape of the connecting hole 15 of the operating shaft 11, and is slidable in the connecting hole 15 of the operating shaft 11. It is fitted. A screw groove is formed in the screw shaft portion 35. In addition, a sphere 36 is
Are integrally formed.

Reference numeral 37 denotes a nut body fixed to the inner surface of the lamp housing 1, and the screw shaft portion 35 of the adjusting rod 33 is screwed into the nut body 37. Therefore, when the operation shaft 11 is rotated, the adjustment rod 33 is also rotated, and the screw shaft portion 35 is screwed into or unscrewed from the nut body 37 depending on the direction of the rotation. Therefore, the adjusting rod 33 is moved to the front or the rear while rotating. At this time, since the sliding shaft portion 34 of the adjusting rod 33 is slidably fitted in the connecting hole 15 of the operating shaft 11, the sliding shaft portion 34 and the connecting hole are connected to each other when the adjusting rod 33 is moved. The operation shaft 11 does not move in the axial direction due to sliding between the operation shaft 11 and the shaft 15.

Reference numeral 38 denotes a metal bracket fixed to the rear surface of the reflecting mirror 3, and the rear end portion of the bracket 38 has a synthetic resin receiving body.
39 is supported, a spherical recess 40 opening toward the rear surface is formed in the receiving body 39, and the spherical body 36 of the adjusting rod 33 is fitted into the spherical recess 40, where the adjusting rod is 33
And the reflector 3 are connected. Therefore, when the adjusting rod 33 is moved in the axial direction as described above, the portion of the reflecting mirror 3 connected to the adjusting rod 33 is moved in the forward direction or the backward direction.

(D. Separate spacing adjustment section) Next, the spacing adjustment section 41 provided at a position spaced downward from the rotation fulcrum section 4 will be described. This spacing adjuster
Reference numeral 41 is an adjusting unit for adjusting the direction of the reflecting mirror 3, that is, the irradiation angle in the vertical direction.

The space adjusting unit 41 is provided with a manual adjusting unit 42 and a driving unit 43, which are substantially the same as those used in the space adjusting unit 10, and which include an operating shaft 11 and a pressing member 26.

Reference numeral 44 is a casing of the drive unit 43 fixed to the inner surface of the rear portion of the lamp housing 1. The casing 44 is formed of a rear half 45 and a front half 46 made of synthetic resin. Reference numeral 47 denotes a tubular portion formed in the rear half 45 at a location corresponding to the insertion hole 21 formed in the rear wall 22 of the lamp housing 1. A tubular portion 48 projecting toward the side is formed, and the two tubular portions 47, 48 and the insertion hole 21 of the rear wall 22 of the lamp housing 1 are formed.
Are arranged coaxially. And the rear half 45 of the tubular portion 47
An appropriate gap is provided between the front end of the front half and the rear surface (inner surface) of the front half 46.

49 is a worm wheel with a screw hole 50 in its center
Are formed. An annular protrusion 51 is formed around the screw hole 50 on the rear surface of the worm wheel 49. Such a worm wheel 49 is rotatably supported in the space between the front end of the tubular portion 47 of the rear half 45 and the rear surface of the front half 46. At this time, the annular projection 51 of the worm wheel 49 is rotatably fitted in the front end of the cylindrical portion 47 of the rear half 45, and the fitted state provides the center of rotation of the worm wheel 49.

Reference numeral 52 denotes a motor fixed in the casing 44, and the worm 53 is fixed to the output shaft of the motor.
Is engaged with the worm wheel 49.

Reference numeral 54 denotes an intermediate support, the front half 55 of which has a hexagonal columnar shape, and the rear half of which is a screw shaft portion 56, and a spiral groove is formed on the outer peripheral surface. Further, a rack 57 is formed on one surface of the hexagonal column portion 55 and on the surface of the screw shaft portion 56 continuous with the one surface. Further, a screw hole 58 is formed so as to penetrate the central portion of the intermediate support 54.

Then, the hexagonal column portion 55 of the intermediate support 54 is slidably inserted into the hexagonal engagement hole 59 formed at the front end of the tubular portion 48 of the front half 46, and is allowed to move in the axial direction. It is designed to prevent rotation. Further, the screw shaft portion 56 of the intermediate support 54 is
Is screwed into the screw hole 50 of the worm wheel 49.
Therefore, when the worm wheel 49 is rotated, the intermediate support 54 is prevented from rotating by the engagement between the hexagonal column portion 55 and the engagement hole 59 of the front half 46, and therefore the direction of rotation of the worm wheel 49 is increased. Depending on the direction of movement, it is moved axially forward or backward. And the intermediate support
The screw shaft portion 35 of the adjusting rod 33 is screwed into a screw hole 58 formed in the center of the screw rod 54.

Reference numeral 60 denotes a potentiometer fixed in the casing 44, and a pinion 61 fixed to its operating shaft is an intermediate support.
It is meshed with 54 racks 57.

Then, when the operation shaft 11 is rotated in the interval adjusting section 41, the adjusting rod 33 is also rotated, and is screwed or untwisted with respect to the intermediate support body 54 according to the direction of the rotation. State and is moved axially forward or backward. Therefore, the portion of the reflecting mirror 3 connected to the adjusting rod 33 is moved forward or backward. Even if the adjusting rod 33 moves in the axial direction, the sliding shaft portion 34 of the adjusting rod 33 is
Since it slides inside the connecting hole 15, the operating shaft 11 is not moved in the axial direction.

When the worm wheel 49 is rotated and the intermediate support 54 is moved in its axial direction, the adjusting rod 33 screwed onto this intermediate support 54 is moved in its axial direction together with the intermediate support 54. . And the adjusting rod of the reflector 3
The part connected to 33 is moved.

Further, when the intermediate support 54 is moved in the axial direction, the rack 57 formed on the intermediate support 54 rotates the operation shaft of the potentiometer 60 via the pinion 61, so that the resistance value of the potentiometer 60 is changed. Change. This can be used to electrically detect the irradiation angle or read that the adjustment target has been reached when the irradiation angle is remotely controlled.

Incidentally, 60 is not limited to the potentiometer, in short, the amount of movement of the intermediate support 54 in the axial direction may be detected, and therefore,
The rack 57 rotates an operating shaft of a disk having a plurality of electrical contacts via a pinion 61, and detects the amount of movement by the conduction between the rotating contacts and a separately provided fixed contact. You may

(E. Operation) In the headlight device described above, however, the reflecting mirror 3 is rotated by rotating the operation shaft 11 of the interval adjusting unit 10.
Is rotated about a line connecting the support portion of the rotation fulcrum portion 4 and the support portion of the interval adjusting portion 41, and the irradiation angle thereof is adjusted in the left-right direction. Further, when the operation shaft 11 of the space adjusting unit 41 is rotationally operated, the reflecting mirror 3 is rotated about a line connecting the support portion of the rotation fulcrum portion 4 and the support portion of the space adjusting unit 10 as a rotation shaft. The irradiation angle is adjusted vertically. Furthermore, if the motor 52 is rotated by remote control, the worm wheel 49 will be passed through the worm 53.
Is rotated, and this also adjusts the irradiation angle in the vertical direction.

 Reference numeral 62 is a light bulb supported by the central portion of the reflecting mirror 3.

(F-2. Second Embodiment) [Figs. 8 to 11] Figs. 8 to 11 show a second embodiment of the headlamp device of the present invention. In the description of the second embodiment, only the portion corresponding to the gap adjusting portion 41 in the first embodiment will be described, and the description of the portions corresponding to the rotation fulcrum portion 4 and the gap adjusting portion 10 will be omitted. Omit it.

An insertion hole 121 is formed in the rear wall 122 of the lamp housing 101, and the operation shaft 111 is rotatably supported by the pressing member 126 therein.

Incidentally, 112 is a shaft portion of the operation shaft 111, 113 is a bolt, 114 is a shaft portion.
112 is a flange, 115 is a connecting hole for the shaft 112, and 116 is a shaft 112.
, 117 is the head of the bolt 113, 118 is the embedded shaft of the bolt 113, 119 is the flange of the bolt 113, 120, 120 are the embedded shaft 11
8 knurled, 123 lamp housing
A surrounding wall formed on the rear wall 122 of the 101, 124 and 124 are mounting boss portions also formed on the rear wall 122, 125 and 125 are screw holes of the mounting boss portions 124 and 124, and 127 is a mounting plate of the pressing member 126. , 127
Reference numerals a and 127a denote attachment holes thereof, 128 denotes an insertion hole provided in the attachment plate 127, 129 denotes a retaining ring of the retaining member 126, 130 denotes a retaining edge of the retaining ring, 131 denotes a gasket, and 132 and 132 denote screws.

Reference numeral 133 is an adjusting rod, and a sliding shaft portion 134 at a rear end portion, a screw shaft portion 163 at a front end portion, and a cylindrical portion 164 at an intermediate portion are integrally formed. Reference numeral 165 is a flange formed between the sliding shaft portion 134 and the cylindrical portion 164, and 166 is an annular groove formed on the outer peripheral surface of the cylindrical portion 164 at a position closer to the front. The sliding shaft portion 134 of the adjusting rod 133 is connected to the connecting hole 115 of the operating shaft 111.
Is slidably fitted to.

167 is a nut made of synthetic resin, which is supported by a bracket 138 fixed to the rear surface of the reflecting mirror 103, and
The nut 167 is attached to the screw shaft portion 163 at the front end of the adjusting rod 133.
Are screwed together.

Reference numeral 154 denotes an intermediate support, which is formed by integrally forming a hexagonal column portion 155 at the front end portion and a screw shaft portion 156 at the rear half portion, and a rack 157 extending along the axial direction is formed on the outer surface thereof. There is. A cylindrical through hole 169 is formed at the center of the intermediate support 154.

Then, the adjusting rod 133 is inserted into the through hole 169 from the rear end of the intermediate support body 154, and when the flange 165 collides with the rear end of the intermediate support body 154, the front end of the cylindrical portion 164 of the adjusting rod 133 is moved toward the front end. The annular groove 166 formed in the
Position it slightly forward of the front edge of 154. Therefore, if the stopper washer 170 is fitted to the adjusting rod 133 from its tip end side and the engaging pieces 171, 171, ... Are engaged with the annular groove 166 of the cylindrical portion 164, the adjusting rod 133 will have the cylindrical shape. Part 16
It is rotatably supported by the intermediate support 154 at 4.

Incidentally, 144 is a casing similar to the casing 44, 149
Is the same wheel as the above-mentioned wheel wheel 49,
152 is a motor similar to the motor 52, 153 is the worm
A worm similar to 53, 160 a potentiometer similar to the potentiometer 60, and 161 a pinion similar to the pinion 61. Then, the screw shaft portion 156 of the intermediate support body 154.
Is screwed into the screw hole 150 of the worm wheel 149, and the hexagonal column portion 155 of the intermediate support 154 is slidably engaged with the engagement hole 159 at the front end of the cylindrical portion 148 of the front half 146.

Then, if you rotate the operating shaft 111,
The adjusting rod 133 is also rotated so that the screw shaft portion 163 is screwed in or unscrewed from the nut 167 depending on the direction of the rotation. Since the adjusting rod 133 only rotates in relation to the lamp housing 101, the nut 167 has a screw shaft portion 163 of the adjusting rod 133.
Along the direction of the rearward or forward direction. Therefore, the relevant portion of the reflecting mirror 103 (the portion to which the bracket 138 supporting the nut 167 is fixed is moved toward the rearward or forward direction). Further, when the motor 152 is rotated and thereby the worm wheel 149 is rotated via the worm 153, depending on the direction of the rotation, the intermediate support 154 moves its shaft forward or backward. It moves along the direction, which also causes that part of the reflector 103 to move forward or backward.

(G. Effects of the Invention) As is apparent from the above description, the headlight device of the present invention is a lamp housing having a recessed portion that is opened forward, and a lens attached to the lamp housing so as to cover the opening. A reflecting mirror supporting a light source is arranged in a lamp space defined by and, and the reflecting mirror has one rotation fulcrum and two
The distance adjustment part is supported by the lamp housing, and one of the distance adjustment parts has a front end connected to a reflecting mirror and a rear end protruding freely from an insertion hole provided in a rear wall of the lamp housing. It comprises a rod, a drive unit arranged in the lamp housing so as to surround the adjustment rod and moving the adjustment rod in the front-rear direction, and a manual adjustment unit provided outside the rear wall of the lamp housing for manually rotating the adjustment rod. The manual adjustment part includes an operation shaft having a non-circular connection hole opened at a front end slidably coupled to a rear end part of the adjustment rod, a flange formed at an intermediate part of the operation shaft, and the flange. And a pressing member rotatably supported on the outside of the rear wall of the lamp housing.

Therefore, in the headlight device of the present invention, after the drive section and the adjusting rod are mounted on the lamp housing, the operation shaft is attached to the rear end portion of the adjusting rod protruding from the insertion hole provided in the rear wall of the lamp housing. It suffices to fit the connection hole on the outside and then rotatably support the flange of the operation shaft on the lamp housing by means of the pressing member, and the workability of assembling the spacing adjustment unit including the manual adjustment unit and the drive unit is significantly improved.

[Brief description of drawings]

1 to 7 show a first embodiment of the headlight device according to the present invention. FIG. 1 is a front view and FIG. 2 is a II-II of FIG.
3 is an enlarged sectional view taken along line III-III in FIG. 1, FIG. 4 is an enlarged sectional view taken along line IV-IV in FIG. 1, and FIG. 5 is FIG. 6 is a sectional view taken along the line V-V of FIG. 6, FIG. 6 is a sectional view taken along the line VI-VI of FIG. 4, FIG. 7 is an exploded perspective view of a main portion, and FIGS. FIG. 8 shows a second embodiment of the lighting device, and FIG. 8 is an enlarged cross-sectional view of a main part, FIG.
8 is a sectional view taken along the line IX-IX in FIG. 8, FIG. 10 is a sectional view taken along the line XX in FIG. 8, and FIG. 11 is an exploded perspective view of the main part.
12 and 13 show an example of a conventional headlight device. FIG. 12 is a cross-sectional view of a main part, and FIG. 13 is an exploded perspective view of the main part. Explanation of reference numerals 1, 101 ...... Lamp housing, 2, 102 ...... Lens, 3, 103 ...... Reflecting mirror, 4 ...... Rotation fulcrum part, 10 …… Spacing adjustment part, 11, 111 …… Operation axis, 15 , 115 …… Connection hole, 14, 114 …… Flange, 21, 121 …… Insertion hole, 22, 122 …… Rear wall, 26, 126 …… Holding member, 33, 133 …… Adjusting rod, 41, 141… … Interval adjustment part, 42, 142 …… Manual adjustment part, 43, 143 …… Drive part, 62 …… Light source, 35 …… Intermediate part of the adjusting rod, 36 …… Sphere, 39 …… Receiver, 49 …… Driver, 54 …… Adjustment rod support, 56 …… Screw groove, 149 …… Drive body, 154 …… Adjustment rod support, 156 …… Screw groove, 163 …… Adjustment rod tip, 164 …… Adjustment Middle part of rod, 167 …… nut

Claims (3)

(57) [Claims] 1. A reflecting mirror for supporting a light source is arranged in a lamp space defined by a lamp housing having a concave portion opening to the front and a lens attached to the lamp housing so as to cover the opening. The mirror is supported on the lamp housing by one rotation fulcrum part and two interval adjusting parts, and one of the interval adjusting parts is a through end provided on the rear wall of the lamp housing with the front end connected to the reflecting mirror. A rotatable adjustment rod that projects from the hole, a drive unit that is placed in the lamp housing to surround the adjustment rod and moves the adjustment rod in the front-back direction, and an adjustment rod that is provided outside the rear wall of the lamp housing And a manual adjustment part for rotating the manual adjustment part, wherein the manual adjustment part has an operation shaft in which a non-circular connection hole opened at a front end is slidably coupled to a rear end part of the adjustment rod, A headlight device comprising a flange formed in an intermediate portion of the operation shaft, and a pressing member rotatably supporting the flange on the outer side of the rear wall of the lamp housing. 2. The drive unit comprises an adjusting rod support body having an outer surface on which a thread groove is formed and an intermediate portion of the adjusting rod is screwed together.
The adjusting rod supporting body is rotated by a motor and the adjusting rod supporting body is screwed into the adjusting rod. The adjusting rod has a spherical body formed at a tip end thereof fitted in a concave portion of a receiving body supported by a reflecting mirror. The headlight device according to claim 1. 3. The drive unit includes an adjusting rod support member which rotatably supports the intermediate portion of the adjusting rod so as to be immovable in the axial direction and has a screw groove formed on the outer surface thereof, and is rotated by a motor to support the adjusting rod. A headlight device according to claim 1, wherein the body is provided with a driving body screwed to the adjusting rod, and the adjusting rod is screwed to a nut supported by a reflecting mirror.