JPH0731450Y2 - Car headlamp - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention relates to a headlamp for an automobile capable of adjusting an irradiation angle, and particularly to two headlamps each having a bulb mounted in one lamp body. The present invention relates to an automobile headlamp in which two projection units in which an ellipsoidal reflector and a projection lens in which a reflector is adjacently arranged or a bulb is attached are integrally arranged.

[Prior art]

The headlamp is equipped with an aiming mechanism that can be tilted around a predetermined horizontal axis and a vertical axis, respectively. With this aiming mechanism, the irradiation direction of the headlamp, that is, the irradiation angle of the headlamp is within a predetermined range. Adjustment (hereinafter referred to as aiming adjustment)
Has been done. And this headlamp aiming mechanism actually turns on the headlamp in a dark room,
Irradiation is performed on the screen at a certain distance from the headlamp, and the irradiation spot on the screen is adjusted to be at a predetermined position.

[Problems to be solved by the invention]

However, in the above-mentioned conventional aiming adjustment, many equipments such as a large dark room and a screen are required. Further, aiming adjustment must be performed while looking at the screen so that the irradiation spot of the headlamp comes to a predetermined position, and there is a problem that the adjustment work takes time.

Headlamps used in the United States have three location bosses, which are measurement reference planes, protruding from the front lens, and a measuring instrument generally called an aimer is set in contact with these location bosses. , It is designed to measure whether the headlamp is tilted with respect to the horizontal plane. That is, when the vehicle is in a horizontal state, the front end face of the location boss is formed to be a vertical plane, and if the aimer is set with this front end face of the location boss as the contact reference plane, the headlamp of the horizontal plane is The amount of tilt can be measured. Then, it is required that the measurement value (inclination amount) by the aimer be within a predetermined range. Therefore, for headlamps for the US, the location boss must be formed,
In addition to headlamps for Japan and Europe, there was also the annoyance of having to manufacture headlamps for the United States independently.

The present invention has been made in view of the above-mentioned problems of the prior art,
Its purpose is to eliminate the need for large-scale equipment such as darkrooms, screens, aimers, etc., with a simple structure to easily check whether the irradiation angle of the headlamp is out of order, and anyone can easily use the head. An object of the present invention is to provide a headlamp for an automobile capable of adjusting the irradiation angle of the lamp.

[Means for Solving the Problems]

In order to achieve the above object, in an automobile headlamp according to claim (1), two reflectors each having a bulb attached thereto are provided adjacent to each other in one lamp body, and the respective reflectors are horizontal. In a headlamp for an automobile, which is tiltably supported about an axis and a vertical axis, the adjacent reflectors are connected to each other and integrated, and the integrated reflector unit is rotated about one horizontal axis and one vertical axis. The reflector unit and the lamp body at a predetermined position between the reflector unit and the lamp body, and the inclination about the vertical axis of the reflector unit from the sliding amount with respect to the fixed side reference point of the sliding member that slides in conjunction with the reflector unit. The first tilt measuring device for measuring At a predetermined position, a level indicator, which is a second inclination measuring instrument for measuring the inclination of the reflector unit about the horizontal axis, is attached, and the lamp body or the front lens has the first and second inclination measuring instruments. It is designed to form a transparent peep window for reading the scale of.

In order to achieve the above object, in the automobile headlamp according to claim (2), a projection lens is provided in front of each of the two elliptical reflecting mirrors to which a bulb is attached, and the projection lens is integrated into one. In a vehicle headlamp, two projection units are provided adjacent to each other in one lamp body, and the respective projection units are tiltably supported about a horizontal axis and a vertical axis, respectively. Is integrated with each other via an attachment, and the attachment that integrates the two projection units is configured to tilt about one horizontal axis and one vertical axis, and at a predetermined position between the attachment and the lamp body, Projection unit based on the sliding amount of the sliding member that slides in conjunction with the attachment with respect to the fixed-side reference point. A first inclination measuring device for measuring the inclination of the projection unit about the vertical axis is interposed, and a level instrument which is a second inclination measuring device for measuring the inclination of the projection unit about the horizontal axis is provided at a predetermined position of the attachment. The lamp body or the front lens is attached with a transparent peep window for reading the scales of the first and second tilt measuring instruments.

[Action]

The inclination of the reflector unit (in the claim (2) the projection unit / attachment integrated body) about the vertical axis appears as the amount of sliding of the sliding member of the first inclination measuring device, and the reflector unit (projection unit / attachment integrated body) The inclination about the horizontal axis appears as the movement amount of bubbles in the spirit level, which is the second inclination measuring device. And one first
Can measure the tilts of the two reflectors (two projection units) about the vertical axis at the same time, and the level of two reflectors (two projection units) can be measured horizontally by one second tilt measuring device. The tilt around the axis can be measured at the same time.

〔Example〕

 Next, an embodiment of the present invention will be described with reference to the drawings.

1 to 6 show a left side headlamp which is one side of a four-lamp type automobile headlamp. FIG. 1 is a front view of a headlamp equipped with an aiming mechanism, and FIG. 2 is a plan view thereof. Figures and 3 are horizontal cross-sectional views, and the lines shown in FIG.
Fig. 4 is a sectional view taken along line III-III, Fig. 4 is a longitudinal sectional view of the headlamp at a vertical axis position (a sectional view taken along line IV-IV shown in Fig. 1), and Fig. 5 is a first tilt measuring device assembly. 6 is a vertical sectional view of the portion (a sectional view taken along line V-V shown in FIG. 1), and FIG.
FIG. 6 is a vertical cross-sectional view (cross-sectional view taken along the line VI-VI shown in FIG. 1) of the spirit level assembly portion which is the tilt measuring instrument of FIG.

In these drawings, reference numeral 2 is a horizontally elongated container-shaped lamp body, and a reflector unit 4 made of a synthetic resin in which two reflectors 4A and 4B are integrally formed on the left and right sides is assembled inside the lamp body 2. . Reference numeral 4C is a reinforcing rib formed on the back side of the joint between the reflectors 4A and 4B. Valve insertion holes are provided at the rear tops of the reflectors 4A and 4B, and the valves 5A and 5B are attached thereto. The valve 5A on the left side (inside the vehicle width direction) has a double-filament structure that contains the main beam filament and the sub-beam filament, and the valve 5B on the right side (outside the vehicle width direction) is a single filament that contains only the sub-beam filament. It has a filament structure. Reference numeral 40 is an opening formed in the back wall of the lamp body for attaching and detaching a bulb, and a rubber cover 42 for closing the inside of the lamp is attached to this opening. Further, a seal groove 3 is formed at the peripheral edge of the rectangular front opening of the lamp body 2, and the seal leg of the front lens 6 is engaged with the seal groove 3 via a sealing agent, so that the front lens 6 is moved to the lamp body. 2 is assembled and integrated into a headlamp. Reference numeral 7 is a clip for mechanically fastening the front lens 6 and the lamp body 2.

The reflector unit 4 includes a ball joint 10 provided in the upper right corner when viewed from the front, an adjusting screw 20 provided in the upper left corner, and an adjusting screw 30 provided in the lower right corner. It is supported. Ball joint
The ball portion 12 side of 10 is supported on the lamp body 2 side, and the reflector unit 4 can swing about this ball joint 10. Further, the adjusting screws 20 and 30 are both rotatably supported by the lamp body 2, and the brackets 26 and 3 protruding from the rear surface of the reflector unit 4 are provided.
The nuts 22 and 32 fitted in 6 are screwed together. Reference numeral 14 is a socket that supports the ball portion 12, and is fixedly supported by a bracket 16 fixed to the back side of the reflector unit 4. Reference numerals 27 and 37 are O-rings, and reference numerals 28 and 38 are flange portions projecting from the adjusting screws 20 and 30, respectively.

Therefore, by rotating the adjusting screw 20, the nut
22 moves along the screw 20, so that the reflector unit 4 tilts about the vertical axis Ly, and the tilt of the reflector unit 4 about the vertical axis Ly, that is, the reflectors 4A, 4A.
The tilt of B in the left-right direction can be adjusted at the same time. On the other hand, the turning operation of the adjusting screw 30 causes the nut 32 to move along the screw 30, so that the reflector unit 4 tilts about the horizontal axis Lx orthogonal to the vertical axis Ly, and the tilt of the reflector unit 4, that is, the reflector. 4A, 4B
The vertical tilt of the can be adjusted at the same time. In this way, the two reflectors 4A and 4B can be simultaneously adjusted by the two adjusting screws 20 and 30.

A reference numeral 50 is provided between the lamp body 2 and the reflector unit 4 at a horizontal plane position including the horizontal axis Lx, and measures the inclination of the reflector unit 4 about the vertical axis Ly.
Is a tilt measuring instrument. Inside the lamp body 2, a cylindrical protrusion 2a integrally formed with the lamp body 2 protrudes toward the left reflector 4A and is formed in the left corner area of the upper wall of the reflector 4A and extends above the recess 4a. ing. The inclination measuring device 50 is attached to the protrusion 2a inside the lamp body. The inclination measuring device 50 includes a cylindrical support member 52, a rod member 54 inserted into the support member 52, and a compression coil spring 56 in the support member 52 that biases the rod member 54 forward. . A female screw member 51 is fixed to the tip of the lamp body inner protruding portion 2a, and a transparent support member 52 made of synthetic resin is screwed to the female screw member 51. A bulging portion 53 is formed at the rear end of the support member 52, and an O-ring 55 that seals the sliding surface with the protrusion 2a on the inside of the lamp body is attached to the outer periphery of the bulging portion 53. . A cap 58 having a driver engaging portion 59 is welded to the bulging portion 53 to be integrated with the supporting member 52, and the supporting member 52 is formed by a driver (not shown).
The position of the support member 52 with respect to the lamp body 2 can be moved back and forth in the axial direction by rotating the female screw member 51.

The rod member 54 inserted into the support member 52 is a stepped rod, and the rod small diameter portion 61 is projected forward by the compression coil spring 56, and is in a biased contact state with the back surface of the vertical wall 4c of the reflector unit 4. Has become. A circular reference line 52a is attached to the outer periphery of the tip of the support member 52, while a linear scale 62 is attached to the rod small diameter portion 61 in the axial direction. When the reflector unit 4 tilts around the vertical axis Ly. In response to this, the rod member 54 also slides back and forth in the axial direction, so that the scale of the position of the reference line 52a changes. Further, as shown in FIG. 5, the rod small-diameter portion contact surface 4c ₁ of the vertical wall 4c is a curved surface having a radius R centered on the horizontal axis Lx, and the first surface may depend on the tilting of the reflector in the vertical direction. The scale of the tilt measuring device 50 is fixed. When the tilt of the reflector unit 4 about the vertical axis Ly is proper, the zero point 62a of the scale 62 is set to coincide with the reference line 52a position, and the scale of the reference line 52a position is set to the vertical axis of the reflector unit 4. The amount of inclination around Ly, that is, the amount of inclination of the reflectors 4A and 4B in the left-right direction is represented.

The position of the reference line 52a, which is the scale reading point, is the position facing the upper side wall of the front lens 6, and
The area 6a corresponding to this scale reading point is a viewing window W in which no step is formed. That is, as shown in FIG. 2, on the inner peripheral surface of the side wall of the front lens 6, diffusion steps S extending substantially parallel to the optical axis are formed at regular intervals so that light leakage from the side surface of the front lens is inconspicuous. However, the front lens side wall region 6a corresponding to the first tilt measuring device 50 is a non-step surface, and the tilt amount can be read through the observation window W which is the non-step surface.

Reference numeral 70 is a level instrument which is a second inclination measuring device which is arranged on a horizontal plane including the horizontal axis Lx and which measures the inclination of the reflector unit 4 in the vertical direction. The bubble 72 is constituted by a linear bubble tube sealed.

The top wall right corner region of the reflector unit 4 recess 4b is formed, the recess 4b has a horizontal bottom surface 4b _1, the direction of the linear scale 74 is perpendicular to the horizontal axis Lx in the bottom surface 4b ₁ The level 70 is mounted and fixed so as to match the direction. Reference numeral 76 is an engaging recess formed in the vertical wall 4d of the reflector unit 4 forming the recess 4b, and with which the level end 70a is engaged. Reference numeral 78 is a fixing screw for fixing the level 70 to the reflector unit 4, reference numeral 79 is a leaf spring interposed between the level 70 and the bottom surface 4b ₁ of the recess, and the level 70 engages the end 70a. Engage the mating recess 76 and
It is fixed by 8, but the levelness of the level 70 can be adjusted by the tightening amount of the fixing screw 78.

When the tilt of the reflector unit 4 about the horizontal axis, that is, the tilt of the reflector 4A and the reflector 4B is at the proper position in the vertical direction, the bubble 72 of the level 70 is linearly scaled.
It is set so as to come to the center position (zero point position) 74a of 74. The area 6b corresponding to the level 70 of the front lens 6
Also, a peep window W having a non-step surface is formed, and the tilt amount can be read from above the side edge portion of the front lens through the peep window W.

Next, the procedure of adjusting the tilt measuring device when the headlamp is mounted on the vehicle body and the procedure of adjusting the irradiation angle of the headlamp after that will be described.

As a single headlamp, when the zero point position 62a of the scale of the rod member 54 of the first tilt measuring device 50 coincides with the reference line 52a position, the tilt of the reflectors 4A and 4B about the vertical axis Ly, that is, the left and right of the headlamp. Direction irradiation angle, in other words, the light distribution characteristics of the main beam and the sub beam of the headlamp in the left-right direction become appropriate positions, and the bubble 72 of the level 70, which is the second inclination measuring device, is positioned at the zero point position 74a of the linear scale 74. In this case, the inclination of the reflectors 4A and 4B around the horizontal axis Lx, that is, the vertical illumination angle of the headlamp, in other words, the vertical and horizontal light distribution characteristics of the main beam and sub beam of the headlamp are in proper positions. Is set to. However, when the headlamps incorporating the first and second inclination measuring devices 50 and 70 are assembled to the vehicle body, the scales of the respective inclination measuring devices cannot be displayed at proper positions due to various errors. Therefore, it is necessary to adjust the scales of the first and second inclinometers to appropriate states.

As the method of adjusting the scale, in the first inclination measuring device 50, the vehicle body and the optical aimer are faced to each other, and the adjusting screws 20 and 30 are rotated to match the optical axis 1 of the headlamp with the axle. At this time, the reference line position 52a and the scale zero point position 62a do not match due to variations in the lamp mounting surface on the vehicle body side. Then, the driver rotates the support member 52 to move it back and forth in the axial direction, so that the scale zero point position 62a of the first inclination measuring device coincides with the reference line position 52a. In this way, when the inclination of the reflector unit 4 in the left-right direction, that is, the irradiation angle of the headlamp in the left-right direction is at an appropriate position,
The scale of the reference line position 52a of the first inclination measuring device 50 is adjusted to display the zero point.

On the other hand, also in the second inclination measuring device 70, when the headlamp is mounted on the vehicle body, the position of the bubble 72 may not coincide with the zero point position 74a of the scale 74 due to variations in the lamp mounting surface on the vehicle body side. In such a case, the fixing screw 78 is rotated to adjust the bubble 72 to the zero point position 74a of the scale. In this way, when the tilt of the reflector unit 4 in the vertical direction, that is, the irradiation angle of the headlamp in the vertical direction is at a proper position, the air bubble 72 of the second tilt measuring device 70 is increased.
Is adjusted to display the zero point 74a of the scale.

After that, the user adjusts the irradiation angle of the headlamp. Then, the inside of the headlamp is looked into from the sight window W position of the front lens 6, the reference line position 52a of the first tilt measuring device 50 does not indicate the zero point position 62a of the scale, or the bubble 72 of the second tilt measuring device 70. Is displaced from the zero point position 74a of the scale, the displacement of the reflector unit 4 in the horizontal direction or the vertical direction can be read from these displacement amounts. In such a case, the adjusting screw 20 or 30 is rotated, so that in the first tilt measuring device 50, the scale zero point position 62a comes to the reference line position 52a, and the second tilt measuring device 70. Then, the bubble 72 is adjusted so as to come to the scale zero point position 74a. In this way, the tilt adjustment of the reflector unit 4, that is, the irradiation angle in the horizontal direction or the vertical direction can be adjusted.

6 and 7 show another embodiment of the present invention in which a projection lens is arranged in front of an ellipsoidal reflector having a bulb and an integrated projection unit is arranged adjacently in one lamp body. FIG. 7 is a plan view of the headlamp, and FIG. 8 is a horizontal sectional view thereof, showing a headlamp as an embodiment. The same parts as those in the first embodiment are designated by the same reference numerals, and the duplicated description will be omitted.

In these figures, reference numeral 80 (80A, 80B) is a projection unit, and each projection unit 80A, 80B has an elliptical reflecting mirror 81 and a filament as a light emitting source located near the focal point of this reflecting mirror 81. Valve 82 mounted as
A projection lens 83 arranged in front of the bulb 82 and a clear cut forming shade 84 provided behind the projection lens 83 by the focal length of the projection lens are integrated by a cylindrical frame body 85. ing. On the outer periphery of the cylindrical frame body 85, a plurality of brackets indicated by reference numeral 86 are provided so as to project, and the brackets 86 are screwed to the attachment 90, whereby the two projection units 80A, 80B are bent in a flat plate shape. It is integrated by the attachment 90. The two projection units 80A and 80B are arranged adjacent to each other in parallel in the lamp body 2, and an in-beam is formed by the left (inside the vehicle width direction) and right (outside the vehicle width direction) projection units 80A and 80B. The right projection unit 80B alone forms a sub beam. Further, this attachment 90 is supported by three points of the swing fulcrum 10 and the adjusting screws 20, 30 as in the first embodiment, and the two projection units 80A, 80B integrated by the attachment 90 are horizontal axes. Lx and the vertical axis Ly can be tilted integrally with each other. Therefore, the irradiation angles of the projection units 80A, 80B, that is, the irradiation angles of the headlamps can be adjusted in the vertical direction and the horizontal direction by rotating the adjusting screws 20, 30.

Further, a first inclination measuring device 50 is interposed between the lamp body 2 and the attachment 90, and a level 70 which is a second inclination measuring device is attached to the upper portion of the attachment. Further, a transparent observation window W is formed in a portion of the upper wall of the lamp body corresponding to the scale forming region of the inclination measuring instruments 50, 70, and the inclination measuring instruments 50, 7 are formed through the observation window W.
The scale of 0 can be read. This peep window W
Has a structure in which a transparent synthetic resin cap is patch-engaged with an opening formed in the upper wall of the lamp body. Therefore, the deviation amounts of the projection units 80A, 80B in the left-right direction and the up-down direction, that is, the deviation amounts of the irradiation angle of the headlamp in the left-right direction and the up-down direction are determined by these inclination measuring devices 50, 70.
When the irradiation angle of the headlamp is deviated, the deviation can be easily adjusted by rotating the adjusting screws 20 and 30 respectively.

[Effect of device]

As is apparent from the above description, in the vehicle headlamp according to the present invention, the vertical axis of the reflector unit (in the claim (2), the two projection units and the attachment are integrated) in which the two reflectors are integrated. The inclination of appears as the sliding amount of the sliding member of the first inclination measuring instrument, and the inclination of the reflector unit (projection unit / attachment integrated body) about the horizontal axis is the movement of the bubbles of the level gauge which is the second inclination measuring instrument. It appears as a quantity, so 1
Two reflectors (2
The tilt of one projection unit around the vertical axis can be measured.
The second tilt measuring device, the level, can simultaneously measure the tilts of the two reflectors (two projection units) about the horizontal axis.

If there is a deviation in the tilt angle of the two reflectors (two projection units) around the vertical axis or the horizontal axis, that is, if there is a deviation in the irradiation angle of the headlamps in the left or right direction or the up or down direction, use the aiming mechanism. Thus, the irradiation angles of the two reflectors (two projection units) can be adjusted simultaneously and easily.

[Brief description of drawings]

FIG. 1 is a front view of a vehicle headlamp that is a first embodiment of the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a sectional view taken along line III-III shown in FIG. The figure shows the line I shown in FIG.
Sectional view taken along line V-IV, FIG. 5 is a longitudinal sectional view of the first inclination measuring instrument assembly portion, FIG. 6 is a longitudinal sectional view of the second inclination measuring instrument assembly portion, and FIG. FIG. 8 is a plan view of a vehicle headlamp which is another embodiment of the invention, and FIG. 8 is a horizontal sectional view thereof. 2 ... Lamp body, 4 ... Reflector unit, 4
A, 4B …… Reflector, 5 (5A, 5B) …… Valve, 6…
… Front lens, 10 …… Swing fulcrum of reflector unit (attachment), 20 …… Headlamp horizontal illumination angle adjustment screw, 30 …… Headlamp vertical illumination angle adjustment screw, 50 …… Headlamp A first inclination measuring instrument for measuring the horizontal deviation of the irradiation angle, 70 ... A level indicator which is a second inclination measuring instrument for measuring the vertical deviation of the irradiation angle of the headlamp, 80 (80A, 80B) ) ... Projection unit, 90 ... Adapter, Lx ... Horizontal axis, Ly ... Vertical axis, W ... Peep window.

Claims (2)

[Scope of utility model registration request] 1. A head for an automobile, wherein two reflectors each having a bulb attached thereto are provided adjacent to each other in one lamp body, and the respective reflectors are supported so as to be tiltable about a horizontal axis and a vertical axis, respectively. In the lamp, the adjacent reflectors are connected to each other and integrated, and the integrated reflector unit is configured to tilt about one horizontal axis and one vertical axis, respectively. At a predetermined position between the bodies, a first inclination measuring device for measuring the inclination of the reflector unit about the vertical axis from the sliding amount with respect to the fixed side reference point of the sliding member that slides in conjunction with the reflector unit is provided, When the reflector unit is in place, tilt it around the horizontal axis. A level gauge, which is a second inclination measuring instrument for measuring the temperature, is attached, and a transparent peep window for reading the scale of the first and second inclination measuring instruments is formed on the lamp body or the front lens. Headlamps for automobiles characterized by 2. Two projection units, each having a projection lens provided in front of two elliptical reflecting mirrors each having a bulb attached thereto, respectively, are provided adjacent to each other in one lamp body. In a vehicle headlamp in which the projection units are tiltably supported about a horizontal axis and a vertical axis, the adjacent projection units are integrated with each other via an attachment, and the two projection units are integrated. The attachment is configured to tilt around one horizontal axis and one vertical axis, and at a predetermined position between the attachment and the lamp body, a fixed side reference point of a sliding member that slides in conjunction with the attachment is attached. A first inclination measuring device for measuring the inclination of the projection unit about the vertical axis from the amount of sliding is provided. A second level measuring instrument, which is a second inclination measuring instrument for measuring the inclination of the projection unit about the horizontal axis, is attached to a predetermined position of the instrument, and the lamp body or the front lens has the first and second inclination measuring elements. A headlamp for an automobile, characterized in that a transparent peep window for reading the scale of the vessel is formed.