JPH0731454Y2 - Car headlamp - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a vehicle headlamp equipped with a level for confirming whether the vertical illumination angle of the headlamp is in a normal position, The present invention relates to an automobile headlamp that can easily adjust the irradiation angle of the headlamp to the regular position when the headlamp is not in the regular position.

[Problems to be Solved by Prior Art and Invention]

A conventional headlamp of this type is disclosed in US Pat.
As shown in No. 495 and No. 4802067, a level body composed of a bubble tube is attached to a lamp body / reflector unit that has a reflector integrally formed on the inner peripheral surface, and the horizontal position of the level lamp is set to the headlamp. The scale of the level (the scale where the bubbles are located) should be aligned with the irradiation axis L of the
A technique is known in which the irradiation angle of the headlamp can be adjusted by an aiming mechanism while watching.

However, when aiming, there is no problem when aiming with the bulb unlit and adjusting to the scale of the level, but when aiming with the bulb lit, the bubble position should be set correctly. It may not be shown, which is a problem. That is, in the above-mentioned conventional level, in order to make it less susceptible to the influence of heat, the bubble tube is housed in the level casing made of synthetic resin, but the heat insulation effect is not sufficient, There is a problem that bubbles in the bubble tube move under the influence of heat caused by lighting of the bulb, and an error occurs between the bubble and the original bubble position.

An object of the present invention is to provide a vehicle headlamp having a level that is not easily affected by heat generated by lighting a bulb.

[Means for Solving the Problems]

In order to achieve the above object, in the vehicle headlamp according to claim 1, irradiation of the headlamp is performed by tilting the tilting member in the up-down direction and the left-right direction with reference to the reference member of the headlamp. In a headlamp for a vehicle with a tiltable member movable type whose angle can be adjusted, a spirit level for measuring the vertical tilt of the irradiation angle of the headlamp is attached at a predetermined position of the tilting member, and the spirit level is composed. With a structure in which a bubble tube is housed in a resin casing, a straight type bubble tube body in which liquid and bubbles are sealed is provided in a glass tube, and both longitudinal ends are provided in a second closed glass tube surrounding the bubble tube body. It has a bubble tube structure which is supported and arranged.

In addition, in the automobile headlamp according to claim (2), in addition to the means of claim (1), the bubble tube is suspended and supported on the back side of the lid of the level, and heat insulation is provided between the bubble tube and the casing. An air layer is formed.

Further, in claim (3), the reflector movable headlamp, wherein the reference member is the lamp body, and the tilting member is a reflector that can tilt in the lamp body,
The means of either claim (1) or (2) is applied.

Further, in claim (4), the unit movable type headlamp in which the reference member is the lamp housing and the tilting member is the lamp body / reflector unit integrally formed with the reflector on the inner peripheral surface, is provided. Either means of (2) is applied.

[Action]

A closed air layer (including a vacuum layer) surrounding the vial body formed by the second closed glass tube prevents heat transfer from the casing to the vial body.

Particularly, in claim (2), an adiabatic air layer is formed between the bubble tube and the casing, and the adiabatic air layer prevents transfer of heat from the casing to the bubble tube, and a closed air layer surrounding the bubble tube body ( (Including the vacuum layer) impedes heat transfer to the vial body.

〔Example〕

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

1 to 9 show a movable headlamp for a vehicle in which a reference member is a lamp body and a tilting member is a reflector, and FIG. 1 is a movable reflector in which an irradiation angle adjusting device is assembled. Type headlamp, FIG. 2 is a plan view of the same headlamp, FIG. 3 is a horizontal sectional view of the same headlamp (a sectional view taken along line III-III shown in FIG. 1), and FIG. FIG. 5 is a vertical cross-sectional view of the headlamp (a cross-sectional view taken along line IV-IV shown in FIG. 1), and FIG. 5 is a vertical cross-sectional view of an assembly part of a measuring instrument for measuring the inclination of the irradiation angle of the headlamp in the horizontal direction ( (A cross-sectional view taken along line V-V shown in FIG. 1),
FIG. 6 is a vertical cross-sectional view (a cross-sectional view taken along line VI-VI shown in FIG. 1) of an assembled portion of a spirit level which is a measuring instrument for measuring an inclination of a vertical direction of a headlamp. Is an exploded perspective view of the spirit level, FIG. 8 is an enlarged vertical sectional view of the spirit level, and FIG. 9 is a transverse sectional view of the spirit level (a sectional view taken along line IX-IX shown in FIG. 8).

In these drawings, reference numeral 2 is a container-shaped lamp body in which a reflector 4 is assembled, and a front lens 6 is assembled in a rectangular front opening of the lamp body 2 to be integrated as a headlamp. .

As shown in FIGS. 1, 3, and 4, the reflector 4 includes a ball joint 10 and three adjusting screws 20, 30.
Supported by dots. The ball portion 12 side of the ball joint 10 is supported by the reflector 4 side, and the reflector 4 can swing about the ball joint 10. The adjusting screws 20 and 30 are both rotatably supported by the lamp body 2, and the nuts 22 and 32 on the reflector 4 side are also supported.
And the nuts 22 and 32 are moved back and forth along the adjusting screws 20 and 30 by rotating the adjusting screws 20 and 30, respectively, whereby the inclination of the reflector 4 is changed. 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 4. Also adjusting screw
The nuts 22, 32 screwed with 20, 30 are supported by brackets 26, 36 fixed to the back surface of the reflector 4. Reference numerals 24 and 34 are compression coil springs, and reference numerals 27 and 37 are O.
Rings, reference numerals 28 and 38, are flange portions protruding from the adjusting screws 20 and 30, respectively.

The supporting point of the reflector 4 by the adjusting screw 20 (the screwing portion between the adjusting screw 20 and the nut 22) is located on the horizontal axis Lx that is orthogonal to the lamp irradiation axis 1 and that passes through the ball joint 10. The support point of the reflector 4 by 30 (the screwing portion of the adjusting screw 30 and the nut 32) is located orthogonal to the irradiation axis 1 of the lamp and on the vertical axis Ly passing through the ball joint 10. Therefore, by turning the adjusting screw 20,
The reflector 4 tilts about the vertical axis Ly, and the tilt of the reflector 4 in the left-right direction, that is, the irradiation angle of the headlamp in the left-right direction can be adjusted. Meanwhile, the adjusting screw 30
With the rotation of, the reflector 4 tilts about a horizontal axis Lx orthogonal to the vertical axis Ly, and the tilt of the reflector 4 in the vertical direction, that is, the irradiation angle of the headlamp in the vertical direction can be adjusted. Thus, the two adjusting screws 20 and 30 can adjust the tilt of the reflector 4, that is, the irradiation angle of the headlamp.

Further, in FIG. 3, reference numeral 40 is a valve socket in which a valve 41 is connected and integrated. An opening 2a for attaching and detaching a bulb socket is formed on the back side of the lamp body 2, and the bulb socket 40 is formed on the rear top of the reflector 4 through the back side opening 2a of the lamp body. It is attached to socket hole 4A. A rubber cover 46, which closes the opening between the reflector 4 and the lamp body 2, is attached to the outer periphery of the rear top of the reflector 4,
Locking cap on outer circumference of valve socket 40
By 47, the bulb socket 40 is pressed and fixed to the socket hole 4A of the lamp body, and the inner peripheral edge portion 46a of the rubber cover 46 is pressed and closely attached to the back side peripheral wall 4B of the lamp body. Reference numeral 42 is a base portion to which the valve 41 is attached, and reference numeral 44 is a cylindrical connector portion provided with a connection terminal inside.

Further, in FIGS. 1 to 4, reference numeral 3 is a lamp body 2.
A seal groove 3a is formed in the peripheral edge of the front opening of the front side, and the sealing agent 3a is loaded in the seal groove 3 to engage the legs of the front lens 6. Reference numeral 7 is a clip for mechanically fastening the front lens 6 and the lamp body 2. Reference numeral 6a is a step for preventing light leakage, which is formed inside the side wall of the front lens 6.

In FIGS. 1 to 3 and 5, reference numeral 50 denotes a horizontal axis.
The first tilt measuring device is provided at a horizontal plane position including Lx, and measures the tilt of the reflector 4 in the left-right direction, that is, the tilt of the headlamp in the irradiation direction. Inside the lamp body 2, a cylindrical protrusion 2b integrally formed with the lamp body protrudes toward the reflector 4, and a recess 4a formed in the left corner portion of the upper wall of the reflector 4 is formed.
It extends above. An inclination measuring device 50 is attached to the lamp body protruding portion 2b and is arranged in parallel with the irradiation axis 1 of the lamp. The inclination measuring device 50 includes a cylindrical support member 52 and a rod member 54 inserted into the support member 52.
And a compression coil spring 56 in the support member 52 for urging the rod member 54 forward.

A female screw member 51 is fixed to the tip of the lamp body protruding portion 2b, and a transparent support member 52 made of synthetic resin is attached to the female screw member 51.
Is screwed on. 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 lamp body protruding portion 2b is attached to the outer periphery of the bulging portion 53. A cap 58 having a driver engaging portion 59 is welded to and integrated with the bulging portion 53, and the support member 52 is rotated with respect to the female screw member 51 by a driver (not shown). The protruding position of the support member 52 with respect to the lamp body 2 can be moved and adjusted in the axial direction.

The rod member 54 inserted into the support member 52 is a stepped rod, and the small-diameter portion 61 of the rod projects forward by the compression coil spring 56 and is in a biased contact state with the rear surface of the standing wall 4c of the reflector 4. There is. And a transparent support member
A reference line 52a that revolves around the outer periphery of the tip of 52 (see FIG. 5)
On the other hand, on the other hand, the rod small diameter part 61 has a linear scale in the axial direction.
Reference numeral 62 indicates that when the reflector 4 tilts about the vertical axis Ly, the rod member 54 also slides back and forth in the axial direction accordingly, and the scale at the reference line 52a position fluctuates. Further, as shown in FIG. 5, the rod small-diameter portion contact surface 4c ₁ of the standing wall 4c is a curved surface with a radius R centered on the horizontal axis Lx, and depending on the tilting of the reflector 4 about the horizontal axis Lx. The scale of the first inclination measuring device 50 is fixed. The zero point 62a of the scale 62 is set to coincide with the position of the reference line 52a when the inclination of the reflector 4 in the left-right direction is appropriate, and the scale of the position of the reference line 52a is the amount of inclination of the reflector 4 in the left-right direction ( The amount of inclination of the irradiation angle of the headlamp in the left-right direction is represented.

And the reference line 52a which is the scale reading point of the inclination measuring device 50
A peep window 90 is formed in the lamp body region corresponding to the position, and the scale can be read through the peep window 90. That is, the observation window 90 has a structure in which a transparent convex lens cap 94 is inserted into an opening 92 (see FIG. 5) formed in the lamp body 2, and the scale of the tilt measuring device 50 can be read in an enlarged scale. You can do it.

In FIG. 1 to FIG. 3 and FIG. 6 to FIG.
Is a level, which is a second tilt measuring device for measuring the vertical tilt of the reflector 4, that is, the vertical tilt of the irradiation angle of the headlamp, and is a recess formed in the right corner area of the upper wall of the reflector 4. It is located on 4d.

The level 70 has a structure in which a straight bubble tube 80 is housed and integrated in a level casing 71, and is attached and fixed to the upper wall of the reflector by four attaching screws 73a. The level casing 71 is a synthetic resin molded body, and is formed of a rectangular container-shaped casing body 72 that opens upward, and four bracket portions 73 that are formed to extend laterally of the casing body 72. The casing main body 72 has a size capable of accommodating a bubble tube 80 described later, and the bracket portion 73 is formed with an insertion hole 73b into which the mounting screw 73a is inserted. On the other hand, an extension portion 5 extending rearward is formed on the upper wall of the reflector 4, and four boss portions 5a which are seat surfaces for carrying a level are projectingly formed on the extension portion 5. A hole 5b for inserting a screw is formed on the upper end surface of each boss, and the bracket 73 is fixed by screwing a mounting screw 73a into the hole 5b. Reference numeral 5c is a rib for reinforcing the extending portion 5.

In this way, the bracket portion 73 is carried by the boss portion 5a, and the spirit level casing 71 is arranged in a state of floating with a gap S from the extending portion 5. Therefore, heat on the reflector side due to lighting of the valve 41 is not easily transmitted to the level casing 71, and the bubble tube 80 is suppressed from being heated by the heat.

At the upper opening of the casing main body 72, a lid 74 made of a synthetic resin having a high elasticity such as U polymer or polyacetal having a bubble tube 80 attached to the back side is attached and fixed by an uneven lance engagement and an adjusting screw 78. . That is, a rectangular opening 72b is formed in the side wall 72a at the rear end of the casing main body 72, and a hook 75a that projects vertically downward at the rear end of the lid 74 and engages with the opening 72b on the casing side. Are formed. At the rear end of the lid body, a pair of hooks 75c are formed at both sides of the hook 75a so as to be separated from each other by a slit 75b.
And this hooking portion 75c is the upper end surface 72a of the side wall at the rear end of the casing.
_{When the} hook 75a is engaged with the opening 72b in the state of being in contact with ₁ , the hooking portion 75c and the hook 75a elastically deform in a cantilever manner in opposite directions to each other, as shown in FIG. The rear end of the body is prevented from coming off in the vertical direction and is elastically supported in the vertical direction. As described above, between the rear end of the lid and the side wall 72a at the rear end of the casing, the opening 72b for preventing the rear end of the lid from coming off and elastically supporting it, and the hook 75.
A concave-convex lance elastic engagement portion including a and a hook portion 75c is formed.

On the other hand, a screw insertion hole 74a is opened in the front end portion of the lid 74,
In addition, a screw hole 76a is provided at the front of the bottom surface of the casing body 72.
An open boss portion 76 is formed so as to project. A compression coil spring 77 is arranged around the boss portion 76, and the lid front end portion and the boss portion 76 are screwed together by the adjusting screw 78, whereby the lid front end portion is vertically moved with respect to the casing body 72. It is elastically supported. By adjusting the screwing amount of the adjusting screw 78, the inclination of the lid 74, that is, the inclination of the bubble tube 80 (the position of the bubble) described later can be adjusted.

Further, a rectangular window 79 is formed in the center of the lid 74, and a sandwiching piece 81 is formed so as to project on the peripheral edge of the window 79 on the back side of the lid.
As shown in FIG. 9, the bubble tube 80 is sandwiched between the sandwiching piece 81 and the peripheral edge of the window 79. And window 79
The surface of the bubble tube 80 on which the scale 84 is formed is exposed to the outside. Reference numeral 84a
Indicates the zero point position of the scale.

In the bubble tube 80, a straight bubble tube main body 82 in which bubbles 83 and a liquid are enclosed in a glass tube is sealed in a second cylindrical closed transparent glass tube 86 in a vacuum state. That is, the bubble tube main body 82
The pinch seal portions 82a at both longitudinal ends of the closed glass tube 8
It has a structure in which it is fused inside the pinch seal portion 86a of 6 and integrated as a bubble tube 80. In this way, the vacuum layer S _1, which is a region having poor thermal conductivity, is formed around the bubble tube body 82, and the heat on the second glass tube 86 side is transferred to the bubble tube body 82.
It is difficult to get to.

Further, the bubble tube 80 includes a lid 74 in the casing body 72.
It is supported in a suspended state by a holding piece 81. That is, the heat insulating air layer S ₁ is formed between the casing main body 72 and the bubble tube 80, so that heat on the casing side is less likely to be transmitted to the bubble tube 80. Further, the inside of the casing is opened to the outside of the casing through a gap between the casing main body 72 and the lid 74 and further through an opening 72b on the rear end side wall of the casing main body. Thus free inflow and outflow of air out of the casing in the heat insulating air layer S ₂ is generated, no problem that heat is confined to a heat-insulating air layer S _2. To attach the bubble tube 80 to the sandwiching piece 81, by inserting the bubble tube 80 from the tip side of the sandwiching piece 81, the bubble tube 80 can be assembled to the lid 74 with one touch.

Next, the case of assembling this level 70 to the reflector 4 will be described with reference to FIG.

First, the lid tube 74 is assembled to the bubble tube 80 by grasping the bubble tube 80 with the holding piece 81. Next, the rear end of the lid 74 is casing
The lance is engaged with the side wall 72a at the rear end of 71, and the front end of the lid is screwed to the boss 76 by the adjusting screw 78 to be integrated as the level 70. Then, the bracket portion 73 of the casing 71 is aligned with the boss portion 5a on the reflector side,
The bracket portion 73 is screwed to the boss portion 5a with a mounting screw 73a. After the level 70 is attached to the upper wall of the reflector, the bubbles 83 of the level 70 are linearly scaled when the reflector 4 is tilted in the vertical direction, that is, when the irradiation angle of the headlamp is in the vertical vertical position. Adjust with the adjusting screw 78 so that it comes to the scale zero position 84a of 84. As shown in FIG. 6, the level 70 of the lamp body 2
The opening 93 is also formed in the area corresponding to the area, and the peep window 90 for reading the scale is also formed here.
The tilt amount indicated by the level 70 can be read from the. The adjusting screw 78 is rotated by removing the convex lens cap 94 and inserting a screw rotating tool through the opening 93.

Next, a procedure for adjusting the inclination measuring devices 50, 70 performed when the headlamp is assembled to the vehicle body and a procedure for adjusting the irradiation angle of the headlamp performed thereafter will be described.

As a single headlamp, when the zero point position 62a of the scale of the rod member 54 of the first inclination measuring device 50 coincides with the reference line 52a position, the light distribution characteristic of the headlamp in the left-right direction becomes an appropriate position, and the second The light distribution characteristic of the headlamp in the vertical direction is set to an appropriate position when the bubble 83 of the level 70 which is the inclination measuring device reaches the zero point position 84a of the linear scale 84.

When the headlamp incorporating the first and second inclination measuring devices 50 and 70 is mounted on the vehicle body, the scale display of each inclination measuring device does not come to the proper position due to various errors. Therefore, it is necessary to adjust the scales of the first and second inclinometers to appropriate states.

Next, an example of this scale adjustment method will be described.

In the first inclination measuring device 50, the automobile is positioned at a horizontal position, the light distribution screen is set at a predetermined position in front of the automobile, and the headlamp is turned on. Then, the adjusting screw 20 is rotated to adjust the light distribution of the headlamp so as to come to a predetermined position in the left-right direction on the light distribution screen (so that the irradiation axis 1 of the headlamp coincides with the axle). However, 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 support member 52 is pivotally operated by a driver and moved 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 irradiation angle of the headlamp in the left-right direction is at a proper position, the scale of the reference line position 52a of the first inclination measuring device 50 is adjusted so as to display the zero point (zero point adjustment).

On the other hand, in the level 70 which is the second inclination measuring device, the adjusting screw 30 is rotated to adjust the hot zone of the headlamp to a predetermined position in the vertical direction on the light distribution screen. However, the bubble position may not coincide with the zero point position 84a of the scale 84 due to variations in the lamp mounting surface on the vehicle body side. In such a case, the adjusting screw 78 is rotated to adjust the bubble 83 to the zero point position 84a of the scale. In this way, when the vertical irradiation angle of the headlamp is at a proper position, the air bubble of the second level measuring instrument 70, which is the level indicator 70, is adjusted so as to display the zero point 82a of the scale.

After that, the user adjusts the irradiation angle of the headlamp. Then, looking inside the headlamp from above the upper side wall of the front lens 6, the reference line position 52a of the first inclination measuring device 50 does not indicate the zero point position 62a of the scale, or
The bubble 83 of the level 70, which is the tilt measuring instrument of the
If there is a deviation from 84a, the amount of inclination of the lamp body in the left-right direction or the up-down direction, that is, the deviation of the irradiation angle of the headlamp in the left-right direction or the up-down direction can be read from these deviation amounts. And in this case,
The adjusting screw 20 or 30 is rotated, respectively, so that the scale zero point position 62a comes to the reference line position 52a in the first inclination measuring device 50, and the level indicator 70 which is the second inclination measuring device,
The bubble 83 is adjusted so as to come to the scale zero point position 84a. In this way, the irradiation angle of the headlamp in the horizontal direction or the vertical direction can be adjusted.

Although the bubble tube 80 of the above-described embodiment has been described as a structure in which the bubble tube main body 82 is sealed in the second closed glass tube 86 in a vacuum state, the inside of the closed glass tube 86 is not a vacuum and an air layer is formed. Even if the structure encloses the bubble tube main body 82, there is a heat insulating effect.

Further, in the above-described embodiment, the bubble tube 80 is suspended and supported on the back side of the lid 74, and the spirit level in which the air layer S ₂ is formed between the casing and the bubble tube 80 has been described. It may be a spirit level having a structure directly supported by the main body 72.

FIG. 10 shows an embodiment in which the present invention is applied to a unit movable type headlamp in which the reference member is the lamp housing and the tilting member is the lamp body / reflector unit (hereinafter referred to as the lamp body unit). .

Horizontal swing axis L on the upper wall 202a of the lamp body unit 202
In the horizontal plane including x, the first inclination measuring device 250 for measuring the horizontal inclination of the lamp body unit (the inclination of the irradiation angle of the headlamp in the horizontal direction) and the vertical inclination of the lamp body unit 202 (the headlamp) Level that is a second inclination measuring device for measuring the inclination of the irradiation angle in the vertical direction of the
270 are provided respectively. First tilt measuring instrument 250
The transparent support member 52 is assembled to the mounting surface of the lamp housing 200 side via the holding member 252, and the graduated rod member 54 is biased to the standing wall 204 protruding from the upper wall 202a of the lamp body unit. Abutted. The rod small diameter portion 61 abutting surface 204a of the standing wall 204 is a curved surface centered on the horizontal axis Lx, and the first measuring device 250 does not tilt in the vertical direction of the lamp body unit 202 (tilt about the horizontal axis Lx). It is not affected.

A level 270, which is a second inclination measuring device, has the same structure as the level 70 shown in the first embodiment, and a horizontal extending portion 205 protrudingly formed on the upper wall 202a of the lamp body unit.
It is attached and fixed to. Reference numeral 240 is a valve socket, and reference numeral 247 is a locking cap for fixing the valve socket 240 in the socket hole.

Other configurations are the same as those of the movable reflector type described above, and the description thereof will be omitted by giving the same reference numerals.

[Effect of device]

As is clear from the above description, in the vehicle headlamp according to the present invention, the reference member (the reflector movable in the reflector movable type, the lamp body / reflector unit in the unit movable type. The vertical tilt with respect to the mold body in the mold and the lamp housing in the movable unit (hereinafter the same) applies to the spirit level, and from this spirit level, the tilt amount of the tilting member in the vertical direction, that is, the irradiation angle of the headlamp. The amount of tilt in the direction can be read.

Then, in order to adjust the vertical irradiation angle of the headlamp, it is sufficient to tilt the tilting member in the vertical direction so as to adjust the aiming so that the bubble of the spirit level is at a predetermined position.
Anyone can easily adjust the vertical illumination angle of the headlamp.

Further, a closed air layer (including a vacuum layer) surrounding the bubble tube body formed by the second closed glass tube hinders the transfer of heat from the casing to the bubble tube body, and the bubbles move due to the heat generated by the bulb. There is no such problem. Therefore, it is possible to obtain a headlamp with a level that does not cause a measurement error due to heat generation of the bulb, and it is possible to accurately adjust the vertical irradiation angle of the headlamp.

Further, in claim (2), since the heat insulating air layer is formed between the casing and the bubble tube, a double heat insulating air layer (including a vacuum layer) is formed around the bubble tube body. Since the heat transmitted from the casing to the bubble tube is effectively insulated, a headlamp with a level can be obtained with almost no measurement error due to the heat generation of the bulb, and a more accurate irradiation angle in the vertical direction of the headlamp. Can be adjusted.

[Brief description of drawings]

FIG. 1 is an embodiment in which the present invention is applied to a movable reflector headlamp, and is a front view of the same headlamp, FIG. 2 is a plan view of the same headlamp, and FIG. 3 is a line III-II shown in FIG.
A sectional view taken along I, FIG. 4 is a sectional view taken along the line IV-IV shown in FIG. 1, and FIG. 5 is a longitudinal sectional view of the inclination measuring instrument assembly portion shown in FIG. FIG. 6 is a second sectional view taken along line V-V.
FIG. 7 is a vertical cross-sectional view of the leveling device as the inclination measuring device, which is a cross-sectional view taken along line VI-VI shown in FIG. 1, and FIG. 7 is an exploded perspective view of the leveling device which is the second inclination measuring device. FIG. 8 is an enlarged vertical sectional view of the same level, FIG. 9 is an enlarged horizontal sectional view of the same level (a sectional view taken along the line IX-IX shown in FIG. 8), and FIG. FIG. 3 is a plan view of the headlamp, showing a partially broken view of an example applied to a mold headlamp. 2 ... Lamp body that is a reference member, 4 ... Reflector that is a tilting member, 5 ... Rear extension of the reflector,
5a …… Boss which is a carrying part of the level, 6 …… Front lens, 10 …… Ball joint as a swinging fulcrum of the reflector which is a tilting member, 20 …… Tilting the reflector which is a tilting member in the left and right direction Adjustment screw for adjusting the tilting member 30 ... Adjusting screw for tilting the reflector, which is a tilting member, in the vertical direction, 50,250 ... First tilt measuring device for measuring the tilt of the headlamp in the left-right direction, 70,270 …
… Level 2 which is the second tilt measuring instrument that measures the tilt of the vertical direction of the headlamp, 72 …… Leveling casing body, 80 …… Bubble tube, 82 …… Bubble tube body, 83 …… Bubbles, 86 ... second closed glass tube, S ₁ ... vacuum layer surrounding the bubble tube body, S ₂ ... insulating air layer surrounding the bubble tube, 10
0 ...... Opening formed in the region of the level casing facing the bubble tube, 200 ...... Reference member lamp housing, 202 ...... Tilt member lamp body / reflector unit, 205 ...... Lamp body ・Rear extension of the reflector unit, Lx ... horizontal axis, Ly ... vertical axis.

Claims (4)

[Scope of utility model registration request] 1. A tiltable member movable type headlamp for an automobile, wherein a tilting member is tilted in a vertical direction and a horizontal direction with respect to a reference member of the headlamp so that an irradiation angle of the headlamp can be adjusted. At a predetermined position of the member, a spirit level for measuring the vertical inclination of the irradiation angle of the headlamp is attached, and this spirit level has a structure in which a bubble tube is housed in a synthetic resin casing. For a vehicle characterized in that a straight type bubble tube main body in which liquid and bubbles are sealed in a glass tube is arranged in a second closed glass tube surrounding the bubble tube main body with both longitudinal ends thereof being supported. head lamp. 2. The automobile according to claim 1, wherein the bubble tube is suspended and supported on the back side of the lid of the spirit level, and a heat insulating air layer is formed between the bubble tube and the casing. Headlamp. 3. The headlamp for an automobile according to claim 1, wherein the reference member is a lamp body, and the tilting member is a reflector that can tilt within the lamp body. 4. The reference member is a lamp housing, and the tilting member is a lamp body / reflector unit integrally formed with a reflector on an inner peripheral surface thereof. Headlamps for cars.