United States Patent [19]
`Miyauchi et al.
`
`[11] Patent Number:
`[45] Date of Patent:
`
`4,833,573
`May 23, 1989
`
`[54] HEADLIGHT FOR VEHICLE
`
`[75] Inventors:
`
`Shizuya Miyauchi; Kiyoshi Wada,
`both of Shimizu, Japan
`
`[73] Assignee: Koito Seisakusho Co., Ltd., Tokyo,
`Japan
`
`[21] Appl. No.: 137,021
`
`[22] Filed:
`
`Dec. 22, 1987
`
`Foreign Application Priority Data
`[30]
`Dec. 22, 1986 [JP]
`Japan ................................ 61-305834
`
`[51] Int. Cl." ........................ B600 1/10, B600 11/00;
`-
`B62J 6/00
`[52] U.S. Cl. ......................................... 362/71; 362/72
`[58] Field of Search .................................... 362/71, 72
`
`[56]
`
`References Cited
`U.S. PATENT DOCUMENTS
`3,646,339 2/1972 Yssel ..................................... 362/71
`3,939,339 2/1976 Alphen .................................. 362/72
`4,024,387 5/1977 Alphen .................................. 362/72
`4,075,469 2/1978 Alphen .................................. 362/72
`Primary Examiner—Allen M. Ostrager
`Attorney, Agent, or Firm—Sughrue, Mion, Zinn,
`Macpeak & Seas
`ABSTRACT
`[57]
`A headlight for use in a vehicle and of the type includ
`ing a light source and a lens which are rotatable around
`the optical axis of the light source and the lens to define
`the inclination of the distribution of the light beam in
`the transverse directions. The light source and the lens
`are formed unitally and are supported in a lamp body
`rotatably around the optical axis, and the lamp body is
`provided with a driving device for rotating the inte
`grally formed light source and the lens.
`
`9 Claims, 12 Drawing Sheets
`
`Reference Voltage
`Generating Circuit
`
`
`
`Hºjj
`
`3rd Comparison
`
`4th Comparison
`
`2nd Motor
`Driving
`Circuit
`
`
`
`
`
`
`
`
`
`
`
`t Comparison
`Circuit
`
`1st Motor
`Driving
`Circuit
`
`91
`
`1st Inclination
`Angle Detector
`
`L-2nd comparison
`Circuit
`
`eference Voltage
`R
`Generating Circuit
`
`92
`
`
`
`
`
`
`
`SL Corporation v. Adaptive Headlamp Technologies, Inc.
`
`
`
`SL Corp. Exhibit 1039
`Case IPR2016-00193
`
`

`
`U.S. Patent May 23, 1989
`US. Patent May 23,1939
`F|G. 1
`F/ G .1
`
`
`
`sheet 1 of 12
`Sheet 1 of 12
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`4,833,573
`4,833,573
`
`

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`Sheet 2 of 12
`U.S. Patent May 23, 1989
`% Sheet 2 of 12
`US. Patent May 23,1989
`F|G.2
`FI G . 2
`
`
`
`4,833,573
`4,833,573
`
`

`
`U.S. Patent
`Patent May 23,1989
`May 23, 1989
`
`Sheet 3 of 12
`Sheet 3 of 12
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`4,833,573
`4,833,573
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`
`
`
`
`F/G.3
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`

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`U.S. Patent May 23, 1989
`US. Patent May 23,1989
`F|G. 4
`F/ G. 4
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`
`
`Sheet 4 of 12
`Sheet 4 of 12
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`4,833,573
`4,833,573
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`

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`U.S. Patent May 23, 1989
`US. Patent May 23,1989
`
`Sheets of 12
`Sheet 5 of 12
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`4,833,573
`4,833,573
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`F/G.5
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`15°
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`25
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`

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`U.S. Patent
`US. Patent
`
`May 23, 1989
`
`Sheet 6 of 12
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`4,833,573
`4,833,573
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`F/ G. 6 A
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`Fl 6. 6B
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`371)
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`15°
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`37a
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`37
`37
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`

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`U.S. Patent May 23, 1989
`US. Patent May 23,1989
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`Sheet 7 of 12
`Sheet 7 of 12
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`4,833,573
`4,833,573
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`

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`U.S. Patent May 23, 1989
`U.S. Patent May 23,1989
`
`Sheet 8 of 12
`Sheet 3 of 12
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`4,833,573
`4,833,573
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`U.S. Patent May 23,1939
`U.S. Patent May 23, 1989
`
`3 Sheet 9 of 12
`- Sheet 9 of 12
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`4,833,573
`4,833,573
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`
`
`FIG. 11
`F/6.17
`
`

`
`U.S. Patent
`May 23, 1989
`US. Patent May 23,1989
`
`Sheet 10 of 12
`Sheet 10 of 12
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`4,833,573
`4,833,573
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`Sheet 11 of 12
`U.S. Patent May 23, 1989
`Sheet 11 of 12
`U.S. Patent May 23,1989
`FIG. 13 (Prior ART)
`F/G.13 CPVRIOR ART)
`
`
`
`4,833,573
`4,833,573
`
`

`
`U.S. Patent May 23, 1989
`US. Patent May 23,1939
`
`Sheet 12 of 12
`Sheet 12 of 12
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`4,833,573
`4,833,573
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`i
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`F/G.75(PRIORART)
`
`

`
`5
`5
`
`10
`10
`
`15
`15
`
`1
`1
`HEADLIGHT FOR VEHICLE
`HEADLIGHT FOR VEHICLE
`
`4,833,573
`4,833,573
`2
`2
`Namely, when the two wheeled vehicle travels along
`Namely, when the two wheeled vehicle travels along
`a leftward curved road, the driver inclines the vehicle
`a leftward curved road, the driver inclines the vehicle
`body leftward by an angle a as shown in two dotted
`body leftward by an angle a as shown in two dotted
`The present invention will be described according to
`chain lines in FIG. 14 and the light distribution of the
`The present invention will be described according to
`chain lines in FIG. 14 and the light distribution of the
`following items.
`headlight also inclines leftward as shown in full line fin
`following items.
`headlight also inclines leftward as shown in full line f in
`A. Field of the Invention
`FIG. 15. When the two wheeled vehicle travels along a
`A. Field of the Invention
`FIG. 15. When the two wheeled vehicle travels along a
`B. Prior Art
`rightward curved road, the driver inclines the body of
`B. Prior Art
`rightward curved road, the driver inclines the body of
`a. General Background [FIG, 13~ FIG. 15]
`the vehicle rightward by an angle 8 as shown in chain
`a. General Background [FIG. 13~FIG. 15]
`the vehicle rightward by an angle B as shown in chain
`b. Prior Art Headlight
`b. Prior Art Headlight
`lines in FIG, 14 and the light distribution of the head
`lines in FIG. 14 and the light distribution of the head-
`light also inclines rightward as shown in chain line g in
`C. Problems to be solved by the Invention
`C. Problems to be solved by the Invention
`light also inclines rightward as shown in chain line g in
`FIG. 15.
`V
`D. Summary of the Invention
`D. Summary of the Invention
`FIG. 15.
`.
`E. Brief Description of Drawings
`E. Brief Description of Drawings
`When the light distribution inclines leftward as
`When the light distribution inclines leftward as
`F. Embodiment
`shown in line f, the headlight illuminates too near por
`F. Embodiment
`shown in line f, the headlight illuminates too near por-
`a. Headlight [FIG. 1-FIG. 7]
`tion on the traveling lane and a portion higher than the
`tion on the traveling lane and a portion higher than the
`a. Headlight [FIG. 1-FIG. 7]
`a-1 Lamp Body [FIG. 1-FIG. 3]
`horizontal line H–H on the facing lane which is haz
`a-l Lamp Body [FIG. 1~FIG. 3]
`horizontal line H—H on the facing lane which is haz-
`a-2 Reflecting Mirror, Cover Lens [FIG. 1- FIG.
`zardous against the facing vehicles. When the light
`a-2 Reflecting Mirror, Cover Lens [FIG. 1-FIG.
`zardous against
`the facing vehicles. When the light
`3]
`distribution inclines rightward the headlight also illumi
`3]
`distribution inclines rightward the headlight also illumi-
`a-3 Movable Portion [FIG. 1, FIG. 2, FIG.
`nates too near portion on the traveling lane.
`a-3 Movable Portion [FIG.
`1, FIG. 2, FIG.
`nates too near portion on the traveling lane.
`b. Prior Art Headlight
`4~ FIG. 7]
`4~FIG. 7]
`b. Prior Art Headlight
`a-3a Connecting Member [FIG. 1, FIG. 4, FIG. *
`It has been proposed to adjust the light distribution
`It has been proposed to adjust the light distribution
`a-3a Connecting Member [FIG. 1, FIG. 4, FIG. 2°
`by detecting the inclination of the body of the two
`5]
`5]
`by detecting the inclination of the body of the two
`a-3b Control Lens [FIG. 1, FIG. 4]
`wheeled vehicle and changing the direction of members
`a-3b Control Lens [FIG. 1, FIG. 4]
`wheeled vehicle and changing the direction of members
`a-3c Bulb [FIG. 1, FIG. 2, FIG. 4~FIG. 6]
`determining the inclination of the light distribution.
`a-3c Bulb [FIG. 1, FIG. 2, FIG. 4~FIG. 6]
`determining the inclination of the light distribution.
`a-3d Support by Lamp Body [FIG. 1]
`Japanese Patent Publication No. 56-18430 shows one
`a-3d Support by Lamp Body [FIG. 1]
`Japanese Patent Publication No. 56-18430 shows one
`25
`25
`a-3e Light Distribution [FIG. 5, FIG. 7]
`example, wherein a reflective mirror supporting a bulb
`a-3e Light Distribution [FIG. 5, FIG. 7]
`example, wherein a reflective mirror supporting a bulb
`a-4 Driving Means of Movable Portion [FIG. 1,
`and a lens is rotatable around the optical axis and, when
`a-4 Driving Means of Movable Portion [FIG. 1,
`and a lens is rotatable around the optical axis and, when
`FIG. 4]
`FIG. 4]
`the body of the vehicle inclines in the transverse direc-
`the body of the vehicle inclines in the transverse direc
`a-5 Driving Means of Lamp Body [FIG. 2, FIG. 3]
`a-5 Driving Means of Lamp Body [FIG. 2, FIG. 3]
`tion the mirror is rotated by an electric motor to adjust
`tion the mirror is rotated by an electric motor to adjust
`the light distribution.
`b. Inclination Detector of Vehicle [FIG. 8-FIG. 11] 30
`the light distribution.
`b. Inclination Detector of Vehicle [FIG. 8~FIG. 11] 30
`b-1 Casing [FIG. 9- FIG. 11]
`b-1 Casing [FIG. 9~FIG. 11]
`PROBLEMS TO BE SOLVED BY THE
`PROBLEMs TO BE SOLVED BY THE
`b-2 Gimbals [FIG. 8-FIG. 11]
`b-2 Gimbals [FIG. 8~FIG. 11]
`INVENTION
`-
`b-3 Motor, Rotating Member [FIG. 8-FIG. 11]
`b-3 Motor, Rotating Member [FIG. 8~FIG. 11]
`INVENTION
`.
`b-4 Potentiometer [FIG. 8-FIG. 12]
`The prior art headlight described as above has been
`b-4 Potentiometer [FIG. 8~FIG. 12]
`The prior art headlight described as above has been
`b-5 Operation
`formed to move integrally the reflecting mirror, the lens
`b-5 Operation
`formed to move integrally the reflecting mirror, the lens
`c. Control Circuit [FIG. 12]
`c. Control Circuit [FIG. 12]
`and the electric bulb, thus, the movable portion is in
`and the electric bulb, thus, the movable portion is in-
`d. Light Distribution Adjusting Operation
`creased in the size and the weight, and it is required to
`creased in the size and the weight, and it is required to
`d. Light Distribution Adjusting Operation
`G. Advantages of the Invention
`use a complicated supporting structure such that the
`G. Advantages of the Invention
`use a complicated supporting structure such that the
`reflective mirror is supported by a plurality of rollers on
`reflective mirror is supported by a plurality of rollers on
`FIELD OF THE INVENTION
`FIELD OF THE INVENTION
`the casing of the light.
`-
`the casing of the light.
`’
`The present invention relates to a headlight for use in
`Thus, the dimension and the weight of the headlight
`Thus, the dimension and the weight of the headlight
`The present invention relates to a headlight for use in
`a vehicle such as a motor cycle and, particularly to a
`device increase, and the driving force also increases.
`device increase, and the driving force also increases.
`a vehicle such as a motor cycle and, particularly to a
`headlight of the type which enables to adjust the light
`Further, it is required to increase the driving force of
`Further, it is required to increase the driving force of
`headlight of the type which enables to adjust the light
`the movable portion, and it is difficult to accurately
`distribution in the transverse direction by changing
`distribution in the transverse direction by changing
`the movable portion, and it is difficult to accurately
`simultaneously the direction of a plurality of optical 45
`adjust the movement of the movable portion.
`adjust the movement of the movable portion.
`simultaneously the direction of a plurality of optical 45
`members, and aims to provide novel and improved
`members, and aims to provide novel and improved
`SUMMARY OF THE INVENTION
`SUMMARY OF THE INVENTION
`means for changing the direction of the plurality of
`means for changing the direction of the plurality of
`optical members, thereby reducing the size and weight
`According to the invention, there is provided a head
`According to the invention, there is provided a head-
`optical members, thereby reducing the size and weight
`of the headlight and improving the operational charac
`light for use in a vehicle of the type wherein the inclina
`light for use in a vehicle of the type wherein the inclina-
`of the headlight and improving the operational charac-
`50
`teristics of the headlight.
`tion of the light distribution in the transverse direction
`teristics of the headlight.
`tion of the light distribution in the transverse direction
`50
`is defined by the rotation of the light source and the lens
`is defined by the rotation of the light source and the lens
`PRIOR ART
`PRIOR ART
`around the optical axis, characterized in that the light
`around the optical axis, characterized in that the light
`source and the lens are formed integrally and are sup
`a. General Background [FIG. 13–FIG. 15]
`a. General Background [FIG. 13—FIG. 15]
`source and the lens are formed integrally and are sup-
`A lighting member should have a predetermined light
`ported in a lamp body rotatable around the optical axis,
`ported in a lamp body rotatable around the optical axis,‘
`A lighting member should have a predetermined light
`distribution as required by the illuminating function of 55
`and that a driving means is provided in the lamp body to
`distribution as required by the illuminating function of 55
`and that a driving means is provided in the lamp body to
`the lighting member, such that a headlight of a vehicle
`rotate the integrally formed light source and the lens.
`the lighting member, such that a headlight of a vehicle
`rotate the integrally formed light source and the lens.
`is required to have a light distribution a of so-called low
`Thus, according to the invention, it is required to
`is required to have a light distribution a of so-called low
`Thus, according to the invention,
`it is required to
`beam as shown in FIG. 13. In the drawing, shown at b,
`move only the light source and the lens in adjusting the
`beam as shown in FIG. 13. In the drawing, shown at b,
`move only the light source and the lens in adjusting the
`and b are shoulders of a road, c is the center line, d is a
`light distribution and the construction of supporting
`light distribution and the construction of supporting
`and b are shoulders of a road, c is the center line, d is a
`60
`traveling lane and e is a facing lane. Further, V—V is
`means for the movable members can be simplified, and
`traveling lane and e is a facing lane. Further, V—V is
`means for the movable members can be simplified, and
`60
`the vertical line relative to the traveling lane, and H-H
`the dimension and the weight of the headlight can be
`the dimension and the weight of the headlight can be
`the vertical line relative to the traveling lane, and H-—H
`is the horizontal line.
`reduced to the minimum, further, the adjusting move
`reduced to the minimum, further, the adjusting move-
`is the horizontal line.
`ment is smooth and accurate.
`While, a two wheeled vehicle such as a motor cycle
`While, a two wheeled vehicle such as a motor cycle
`ment is smooth and accurate.
`inclines the vehicle body in the transverse direction in
`inclines the vehicle body in the transverse direction in
`BRIEF DESCRIPTION OF THE DRAWINGS
`BRIEF DESCRIPTION OF THE DRAWINGS
`traveling a curved lane or in changing the track for
`traveling a curved lane or in changing the track for
`managing the centrifugal force, thus, the headlight also
`FIG. 1 through FIG. 7 show one example of a head
`managing the centrifugal force, thus, the headlight also
`FIG. 1 through FIG. 7 show one example of a head-
`light of a vehicle according to the present invention,
`inclines in the same direction and the distribution of the
`light of a vehicle according to the present invention,
`inclines in the same direction and the distribution of the
`and
`light inclines accordingly.
`light inclines accordingly.
`and
`
`35
`35
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`40
`40
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`65
`65
`
`

`
`3
`FIG. 1 is a vertical sectional view taken along line
`I—I in FIG. 2:
`
`FIG. 2 is a plan view;
`FIG. 3 is a side view;
`FIG. 4 is a perspective view of a movable portion;
`FIG. 5 is a partial enlarged rear view;
`FIG. 6A is an enlarged perspective view of a bulb;
`FIG. 6B is a sectional view taken along line B—B
`FIG. 7 is a view showing the light distribution;
`FIG. 8 through FIG. 11 shows an inclination detec-
`tor of a vehicle body, wherein FIG. 8 shows the work-
`ing principle; FIG. 9 is a vertical sectional view; FIG.
`10 is a sectional view taken along line X-—X in FIG. 9;
`and FIG. 11 is a partially broken perspective view;
`FIG. 12 is a block diagram of a control circuit;
`FIG. 13 is a view showing a typical light distribution
`of a headlight of a vehicle;
`FIG. 14 is a view showing the inclination of a body of
`a two wheeled vehicle in the transverse direction, and
`FIG. 15 is a view showing the light distribution when
`the vehicle body is inclined.
`EMBODIMENT
`
`One embodiment according to the invention will now
`be explained in conjunction with the drawings.
`It will be noted that the embodiment enables to adjust
`the light distribution in the transverse directions, and
`also in the vertical directions.
`a. Headlight [FIG. 1~FIG. 7]
`3 Shown at 1 in the drawings is a headlight according
`to the invention. In FIG. 2, the left side is the front side
`of the vehicle, the right side the rear side, the upper side
`the right side and, the lower side is the left side.
`a-1 Lamp Body [FIG. 1~FIG. 3]
`The headlight 1 includes a lamp body 2, which in-
`cludes a generally bowl shaped main portion 3 with an
`open end thereoflocated forward, and a generally annu-
`lar rim 4 connected to the open end of the main body 3.
`There are provided on left and right side of the main
`portion 3 projecting portions 5 and 5’ having generally
`circular configuration as viewed from transverse direc-
`tions and having rearward and generally horizontally
`extending arms 6 and 6' respectively. The arms 6 and 6’
`have on the rear ends generally vertically extending
`worm gears 7 and 7’ which cooperate respectively with
`worm wheels which will be explained afterwards.
`Supporting arms 8 and 8’ extend forwards from the
`front end of the body of a vehicle (not shown) and are
`spaced left and right directions from each other. The
`supporting arms 8 and 8’ have on the front end portions
`thereof supporting shafts or pins 9 and 9’ to project
`opposingly to each other for rotatably supporting the
`projecting portions 5 and 5' respectively, thereby the
`lamp body 2 can be inclined generally vertically with
`respective to the vehicle body.
`a-2 Reflecting Mirror, Cover Lens [FIG. 1~FIG. 3]
`Shown at 10 is a reflecting mirror having a reflecting
`surface 10:: of the shape of a paraboloid of revolution,
`and generally annular lens supporting portions 11 and
`12 are formed on the front end portion of the mirror 10
`by bending and expanding the portion in two steps as
`shown in FIG. 1. An annular opening 13 is formed in
`the rear end portion of the mirror 10, and annular pro-
`jection I4 is formed on the edge of the opening 13 to
`project rearward from the mirror 10.
`A generally annular mounting ring 15 is secured to
`the outer surface of the mirror 10, and a plurality of
`connecting pieces 16, 16 .
`.
`. (only one of which is
`
`5
`
`10
`
`20
`
`25
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`30
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`35
`
`40
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`45
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`50
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`55
`
`60
`
`65
`
`4,833,573
`
`4
`shown in FIG. 1) are formed on the front edge of the
`ring 15.
`There is provided a generally annular retaining ring
`17 having on the front edge thereof a generally annular
`lens retaining portion 18 which is formed by bending
`radially inward the front edge portion. The retaining
`ring 17 is connected to the mirror 10.
`An annular groove 19 (FIG. 1) is formed by the lens
`supporting portion 11 of the front side and the lens
`retaining portion 18 of the retaining ring 17 to receive
`therein the outer circumference of a cover lens 20.
`
`. of the mounting ring
`.
`The connecting pieces 16, 16 .
`15 are connected to the rear end portion of the retaining
`ring 17, thereby the cover lens 20 is fitted to close the
`open end of the rim 4 or to close the open end of the
`lamp body 2.
`a-3 Movable Portion [FIG. 1, FIG. 2, FIG. 4~FIG. 7]
`Shown at 21 is a movable portion which comprises a
`connecting member 22, a control lens 31 and a bulb 32.
`a-3a Connecting Member [FIG. 1, FIG. 4, FIG. 5]
`The connecting member 22 acts to connect the con-
`trol lens 31 and the bulb 32, and comprises a circular
`plate portion 24 having an opening 23 in the central
`portion, four curved arms 25, 25 .
`.
`. integrally extend-
`ing forward from the outer periphery of the circular
`plate portion 24 and spaced generally 90° from each
`other, and a tubular portion 26 integrally extending
`rearward from the edge of the opening 23. A bulb
`mounting tube 27 is fitted in and secured to the tubular
`portion 26 with the rear end portion thereof extending
`rearward of the tubular portion 26.
`Three cutouts 28a, 28b and 280 are formed in the rear
`end portion of the bulb mounting tube 27 as shown in
`FIG. 5 and the width of the uppermost cutout 28a is
`larger than that of remaining two cutouts 28b and 28c.
`A generally circular gear plate 29 is fitted on and
`secured to the rear end of the tubular portion 26, and
`has on the upper and lower portions of the outer periph-
`ery arcuate gears 30 and 30' each having gear teeth in
`the outer circumference thereof.
`a-3b Control Lens [FIG. 1, FIG. 4]
`The control lens 31 controls the light distribution
`emitted from the lamp body 2, and has a thick thickness
`portion 31a on the outer circumference, a radial flange
`31b on the outer circumference of the portion 31:: and a
`relatively small recess 31c in the central portion of the
`front surface.
`
`The outer peripheral portion 31:: of the control lens
`31 is secured to the tip ends of the arms 25, 25 .
`.
`. of the
`connecting member 22 whereby the control lens 31 is
`integrally connected to the connecting member 22.
`a-3c Bulb [FIG. 1, FIG. 2, FIG. 4~FIG. 6]
`The Bulb 32 is preferably “Halogen H, Headlamp
`Bulb” of EC standard, which comprises a base 33, a
`glass bulb 34 projecting forward from the base 33, a
`sub-filament 35 acting as a light source of low beam, a
`main filament 36 acting as a light source of main beam
`and a douser cap 37 of generally dish shaped configura-
`tion covering for covering generally the lower half and
`the forward of the sub-filament 35.
`
`A generally tubular flange portion 38 is secured to the
`base 33 with the diameter of which being slightly
`smaller than the inner diameter of the bulb mounting
`tube 27 of the connecting member 22 and, has on the
`rear end thereof three radially outward extending locat-
`ing pieces 39a, 39b and 39c. The forward end of the
`flange portion 38 is secured to the forward portion of
`the base 33 by such as welding.
`
`

`
`10
`10
`
`15
`
`4,833,573
`4,833,573
`5
`5
`6
`6
`The positional relationship and the width of the locat
`is located lower side of the horizontal line by the central
`The positional relationship and the width of the locat-
`is located lower side of the horizontal line by the central
`ing pieces 39a, 39b and 39c correspond respectively
`angle of 15° is reflected upward and is transversely
`ing pieces 39a, 39b and 39c correspond respectively
`angle of 15° is reflected upward and is transversely
`with that of the cutouts 28a, 28b and 28c of the bulb
`inverted, whereby the bright zone 42 is formed.
`with that of the cutouts 28a, 28b and 28c of the bulb
`inverted, whereby the bright zone 42 is formed.
`mounting tube 27 of the connecting member 22.
`a-4 Driving means of Movable Portion [FIG. 1, FIG. 4]
`mounting tube 27 of the connecting member 22.
`a-4 Driving means of Movable Portion [FIG. 1, FIG. 4]
`The locating pieces 39a, 39b and 39c are located such 5
`The movable portion 21 is rotated by driving means
`The locating pieces 39a, 39b and 39c are located such 5
`The movable portion 21 is rotated by driving means
`43.
`that when the piece 39a of the wide width is located
`that when the piece 39a of the wide width is located
`43.
`vertically upward of the optical axis of the bulb 32 as
`A supporting plate 44 is mounted to cover the rear
`vertically upward of the optical axis of the bulb 32 as
`A supporting plate 44 is mounted to cover the rear
`shown in FIG. 6A, the left shoulder line 37a of the
`side of the mirror 10, and has a central opening 45
`shown in FIG. 6A, the left shoulder line 37a of the
`side of the mirror 10, and has a central opening 45
`douser cap 37 is located lower than the horizontal line
`through which the rear end of the base 33 of the bulb 32
`douser cap 37 is located lower than the horizontal line
`through which the rear end of the base 33 of the bulb 32
`extends rearward.
`including the optical axis by 15° as shown in FIG. 6B.
`including the optical axis by 15° as shown in FIG. 6B.
`extends rearward.
`The bulb 32 is mounted on the mounting tube 27 with
`The lower end portion of the supporting plate 44 is
`The bulb 32 is mounted on the mounting tube 27 with
`The lower end portion of the supporting plate 44 is
`the locating pieces 39a, 39b and 39c of the flange por
`formed to project slightly rearward to mount a first
`the locating pieces 39a, 39b and 39c of the flange por-
`formed to project slightly rearward to mount a first
`tion 38 engaging respectively corresponding cutouts
`motor 46 with the rotatable shaft 46a thereof extending
`tion 38 engaging respectively corresponding cutouts
`motor 46 with the rotatable shaft 46a thereof extending
`generally parallel to the optical axis. A gear wheel 47
`28a, 28b and 28c of the bulb mounting tube 27 of the
`28a, 28b and 28c of the bulb mounting tube 27 of the
`generally parallel to the optical axis. A gear wheel 47
`connecting member 22, whereby angular position of the
`mounted on the shaft 46a engages with the lower side
`connecting member 22, whereby angular position of the
`mounted on the shaft 46:: engages with the lower side
`bulb 32 around the optical axis relative to the connect
`arcuate gear 30' of the connecting member 22.
`bulb 32 around the optical axis relative to the connect-
`arcuate gear 30’ of the connecting member 22.
`A first inclination detector 48 is mounted on the inner
`ing member 22 and the lens 31 is determined, and a bulb
`ing member 22 and the lens 31 is determined, and a bulb
`A first inclination detector 48 is mounted on the inner
`retainer 40 [FIG. 1]is provided on the mounting tube 27
`surface of the upper end portion of the supporting plate
`retainer 40 [FIG. 1]is provided on the mounting tube 27
`surface of the upper end portion of the supporting plate
`to retain the bulb 32 on the mounting tube 27.
`to retain the bulb 32 on the mounting tube 27.
`44, and a rotor shaft 49 of the detector 48 has a gear 50
`44, and a rotor shaft 49 of the detector 48 has a gear 50
`20
`The control lens 31 and the bulb 32 are connected
`fixed thereon to engage with the upper side arcuate gear
`The control lens 31 and the bulb 32 are connected
`20
`fixed thereon to engage with the upper side arcuate gear
`integrally through the connecting member 22 and are
`integrally through the connecting member 22 and are
`30 of the connecting member 22. The detector 48 com
`30 of the connecting member 22. The detector 48 com-
`located co-axially with respect to the optical axis x—x.
`prises a potentiometer the resistance of which changes
`located co-axially with respect to the optical axis x—x.
`prises a potentiometer the resistance of which changes
`a-3d Support by Lamp Body [FIG. 1]
`according to the rotation of the shaft 49.
`a-3d Support by Lamp Body [FIG. 1]
`according to the rotation of the shaft 49.
`The movable portion 21 is rotatably mounted around
`When the first motor 46 rotates, the lower arcuate
`The movable portion 21 is rotatably mounted around
`When the first motor 46 rotates, the lower arcuate
`the optical axis x—x of the control lens 31 and the bulb 25
`the optical axis x—x of the control lens 31 and the bulb 25
`gear 30’ rotates due to the gear 47 of the first motor 46,
`gear 30’ rotates due to the gear 47 of the first motor 46,
`32 within the space defined between the reflective mir
`thus, the gear plate 29 rotates and, the connecting mem
`32 within the space defined between the refiective mir-
`thus, the gear plate 29 rotates and, the connecting mem-
`ror 10 and the cover lens 20. Namely, the flange 31b of
`ber 22, integrally with the bulb 32 and the control lens
`ber 22, integrally with the bulb 32 and the control lens
`ror 10 and the cover lens 20. Namely, the flange 31b of
`the control lens 31 is slidably fitted in an annular groove
`31, rotates around the optical axis whereby the angle of
`the control lens 31 is slidably fitted in an annular groove
`31, rotates around the optical axis whereby the angle of
`defined by the lens supporting portion 12 of the rear
`the beam of the headlight 1 changes in the transverse
`defined by the lens supporting portion 12 of the rear
`the beam of the headlight 1 changes in the transverse
`directions.
`side and the rear surface of the outer circumferential 30
`side and the rear surface of the outer circumferential 30
`directions.
`portion of the cover lens 20, and the recess 31c in the
`portion of the cover lens 20, and the recess 31c in the
`The rotation of the gear plate 29 causes the rotation
`The rotation of the gear plate 29 causes the rotation
`front central portion of the lens 31 is rotatably engaging
`of the gear 50 of the first inclination detector 48 through
`front central portion of the lens 31 is rotatably engaging
`of the gear 50 of the first inclination detector 48 through
`the projection 20a formed on the rear central portion of
`the upper side arcuate gear 30, thus, the terminal volt
`the projection 20a formed on the rear central portion of
`theupper side arcuate gear 30, thus, the terminal volt-
`the cover lens 20, so that movable portion 21 is rotat
`age of the detector 48 changes, and the angle of inclina
`the cover lens 20, so that movable portion 21 is rotat-
`age of the detector 48 changes, and the angle of inclina-
`tion of the bulb 32 and the control lens 31 in the trans-
`ably supported in the mirror 10 and the cover lens 20. 35
`ably supported in the mirror 10 and the cover lens 20. 35
`tion of the bulb 32 and the control lens 31 in the trans
`verse directions can be detected from the terminal volt-
`The tubular portion 26 of the connecting member 22 is
`The tubular portion 26 of the connecting member 22 is
`verse directions can be detected from the terminal volt
`age.
`rotatably inserted through the annular projection 14 of
`rotatably insertgd through the annular projection 14 of
`age.
`the reflective mirror 10.
`a-5 Driving Means of Lamp Body [FIG. 2, FIG. 3]
`the reflective mirror 10.
`a-5 Driving Means of Lamp Body [FIG. 2, FIG. 3]
`The mirror 10, the cover lens 320 and the movable
`The cover lens 20 is mounted after the movable por
`The cover lens 20 is mounted after the movable por-
`The mirror 10, the cover lens 320 and the movable
`tion 21 is located in the mirror 10, and is fitted in the lens 40
`tion 21 is located in the mirror 10, and is fitted in the lens 40
`portion 21 are inclined in the vertical directions by
`portion 21 are inclined in the vertical directions by
`supporting portion 11 of the front side, then, the mount
`supporting portion 11 of the front side, then, the mount-
`rotating the lamp body 2 in the vertical directions
`rotating the lamp body 2 in the vertical directions
`ing ring 15 is connected to the retaining ring 17. The
`through driving means 51.
`through driving means 51.
`ing ring 15 is connected to the retaining ring 17. The
`gear plate 29 is connected to the tubular portion 26 of
`The driving means 51 comprises a second motor 52
`gear plate 29 is connected to the tubular portion 26 of
`The driving means 51 comprises a second motor 52
`the connecting member 22 after the member 22 is con
`the connecting member 22 after the member 22 is con-
`being mounted on the left surface of the right side sup
`being mounted on the left surface of the right side sup-
`nected to the mirror 10 and the portion 26 projects 45
`porting arm 8'. And the rotatable shaft 52a of the motor
`porting arm 8’. And the rotatable shaft 52a of the motor
`nected to the mirror 10 and the portion 26 projects 45
`52 extends in the vertical directions and has a worm 53
`rearward of the projection 14 of the mirror 10.
`rearward of the projection 14 of the mirror 10.
`52 extends in the vertical directions and has a worm 53
`Thus, the bulb 32 and the control lens 31 are mounted
`to engage with the worm wheel 7" which is formed on
`Thus, the bulb 32 and the control lens 31 are mounted
`to engage with the worm wheel 7’ which is formed on
`in the lamp body 2 rotatably around the optical axis x-x
`the right side arm 6' of the lamp body 2.
`in the lamp body 2 rotatably around the optical axis x—x
`the right side arm 6’ of the lamp body 2.
`A second inclination detector 54 is mounted on the
`and, the main filament 36 of the bulb 32 takes th