JPH0371501A - Variable color head lamp for automobile - Google Patents

Abstract

PURPOSE:To prevent an optical axis from being out of position even with vibration generated when a vehicle moves by disposing near the pivot junction position of a reflector a driving unit for driving a filter. CONSTITUTION:A driving unit 28 for driving a filter 21 is provided with a motor 29 and the like and has predetermined weight. Because the driving unit 28 is disposed near under a pivot 15, the load of the driving unit 28 is mainly exerted on the pivot shaft 15 and a reflector 14 is not acted upon by great rotary moment produced about the pivot shaft 15. The reflector 14 will not therefore be moved with the weight of the driving unit 28 by vibration, etc., generated when a vehicle moves, and an optical axis is prevented from being out of position.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a variable color headlamp for automobiles, in particular, a variable color headlamp for automobiles, in particular, a housing fixed to a vehicle body, and a light ring adjusted by being disposed inside the headlamp or by moving a flaper. It concerns a variable color headlamp that can be used.

[Prior Art] Among conventional headlamps for automobiles, there is a variable-color headlamp as shown in FIG. 10 (see Japanese Utility Model Application Publication No. 81-202803).

Reference numeral 1 in the figure is a reflector, a front lens 2 is fixed to the front surface of this reflector 1, a bulb 3 is disposed inside this reflector 1, and a yellow filter 4 is rotatably attached to this bulb 3. It is arranged.

The yellow filter 4 is rotatably disposed via gears 5, etc. by a driving force from a drive unit (not shown), and by rotating the yellow filter 4, the valve is opened. Three types of light are made variable.

[Problems to be Solved by the Invention] However, in such conventional devices, drive units having drive sources such as motors are overlapped to some extent, so as in the above conventional example, so-called reflex movable If the optical axis is adjusted by moving the entire headlamp, even if the drive unit is installed in the reflector 1, the reflector 1 may move while the vehicle is running. However, in so-called movable reflectors, the reflector is movable relative to a housing fixed to the vehicle body, so it is necessary to install a drive unit for heavy objects on the second reflector, and vibrations when the vehicle is running are reduced. etc.,
This reflector may move relative to the housing, causing the optical axis to shift.

[Means for Solving the Problems] The present invention has been made in view of the above-mentioned conventional problems, and includes a reflector having a valve that is pivotally connected and movably arranged in a housing, and whose position can be adjusted. In an automobile headlamp in which the optical axis position can be adjusted by moving a reflector around a pivot coupling position by operating a means, a filter for discoloring light from a bulb is movably disposed within the reflector. , the drive unit for driving the filter is a variable color headlamp for an automobile disposed near the pivot coupling position of the reflector. Since the drive unit is located near the pivot shaft that supports the reflector, the load of this drive unit can be supported by the pivot shaft, so a large rotational moment is applied around this pivot shaft. Therefore, even if vehicle vibration occurs, the reflector does not move, and the optical axis can be prevented from shifting.

[Example] Hereinafter, the present invention will be explained based on examples.

Figures 1 through 6 illustrate the tJ41 embodiment of the present invention.

First, to explain the configuration, reference numeral 11 in the figure is a housing;
This housing 11 is fixed to a vehicle body (not shown). A front lens 12 is fixed to the front opening of the housing 11, and a reflector 14 having a bulb 13 for emitting white light is disposed within the housing 11 so that its optical axis position can be adjusted.

Specifically, this reflector 14 has a spherical pivot shaft 1 at the upper right corner in FIG. 1, as shown in FIG.
5 protrudes rearward in a substantially horizontal direction, and this pivot shaft 15 is pivotally attached to a pivot boss 16 closed to the rear wall of the housing 11. Also, this reflector 1
4 has a left-right angle adjustment screw hole F in the upper left corner in FIG. 1, as shown in FIG. A left and right angle adjustment bolt 18 provided is screwed together. Further, at the lower position of the pivot shaft 15, there is a screw hole 18 for vertical angle adjustment.
A vertical angle adjustment bolt 20 is arranged in the same configuration as the horizontal angle adjustment screw hole 17, etc. (details are omitted).

By rotating these bolts 18 and 20, the reflector 14 is moved about the pivot shaft 15, and the horizontal or vertical angles are adjusted.

Furthermore, the following mechanism is provided to change the light from the bulb 13. That is, first, the bulb 13 is covered with a cylindrical filter 21 that changes the color of the light.
A pair of swing arms 22 that can be removed
, 23 so as to be able to move forward and backward substantially in the front and rear directions. The filter 21 is made of a yellow transparent material such as glass or heat-resistant plastic, and has a ring-shaped edge 21a formed at its tip for reinforcement.

The swing arms 22 and 23 are rotatably attached to a base 24 whose lower ends are fixed to the bottom surface of the reflector 14 via a rotation shaft 25.
A connecting member 26 is rotatably connected to the upper ends of the filters 2 and 23, and the filter 21 is attached to this connecting member 26 with a belt 27. This swing arm 22, 23
The filter 21 is made to move by moving. A drive unit 28 for rotating the swing arms 22, 23 is screwed near the pivot shaft 15 as shown in FIG. As shown in FIG. 1, this drive unit 28 has a built-in motor 29, a worm wheel 31 is screwed onto a worm 30 of this motor 29, and a first
A drive shaft 34 is rotatably connected to the gear 32 through a second gear 33. The tip 34a of this drive shaft 34 is
As shown in FIGS. 1 and 6, it is screwed at a position 1135 on the same axis as the rotation shaft 25 at the lower end of one swing arm 22 and spaced apart from this shaft. As a result, due to the rotation of the drive shaft 34, the swing arms 22, 23
is designed to rotate.

Next, the operation of the variable color headlamp constructed as described above will be explained.

When changing the color of the light from the bulb 13, the motor 29 of the drive unit 28 is driven, the worm 30 is rotated in a predetermined direction, and the worm wheel 31. 1st. The drive shaft 34 is rotated via the second gear 32,33. As a result, the swing arms 22 and 23 are rotated and the filter 21 is moved in the front and back direction, thereby changing the color. As shown by the solid line in FIG. 2, when the bulb 13 is covered with the second filter, the light from the bulb 13 is changed to yellow, then reflected by the reflector 14 and emitted through the front lens 12. That will happen.

The drive unit 28 that drives the filter 21 is provided with a motor 29 and the like and has a certain weight. Since the load is mainly borne by this pivot shaft 15 and no large rotational moment is applied to the reflector 14 around the pivot shaft 15, the drive unit 28 may be damaged due to vibrations etc. when the vehicle is running.
The reflector 14 does not move due to the weight of the reflector 14, and it is possible to prevent the optical axis from shifting.

Further, the drive unit 28 is located far away from the valve 13, so that the influence of heat from the valve 13 is small.

Furthermore, since the drive unit 28 is disposed in the space between the conventionally existing flapper 14 and the housing 11, the drive unit 28 is located outside the housing 11.
There is no need to provide a separate storage space for 8.

No figure 7! FIG. 19 shows a second embodiment of the invention.

In this embodiment, a pair of rectangular filters 41 and 42 are provided on the front side of the reflector 14 so as to be openable and closable in the vertical direction. Specifically, these filters 41.42
has a roughly U-shape in horizontal cross section, and the both side pieces 41a
, 42a are provided with mounting holes 41b, 42b on the same top, and one of the side pieces 41a, 42a is provided with tooth portions 41C, 42C that mesh with each other. As shown in FIG. 9, a drive shaft 43 is projected laterally from one side piece 41a of the lower filter 41, and this drive shaft 43 is rotated by a drive unit 44. It looks like this.

This drive unit 44 is fixed near the lower side of the pivot shaft 15 of the reflector 14, as in the first embodiment.

According to this configuration, when the drive shaft 43 is rotated by the drive unit 44, the lower filter 41 is rotated downward, and this rotation causes the upper filter to be rotated upward via the teeth 41c and 42c. Both filters 41.4
2 is moved as shown by the two-dot chain line in FIG. 7, the front surface of the pulp 13 is opened. By opening and closing the filters 41 and 42 in this manner, the color of the light emitted from the headlamp is changed.

The other configurations and operations are the same as those in the first embodiment, so their explanations will be omitted.

[Effects of the Invention] As explained above, according to the present invention, by setting the drive unit that drives the filter near the pivot axis, even if this drive unit has a certain amount of weight, this Since the load is transmitted to the housing via the pivot shaft and can be borne effectively, there is no rotational moment about the pivot shaft applied to the reflector due to vehicle vibrations, and the optical axis can be prevented from shifting. , which has a practically beneficial effect.

[Brief explanation of drawings]

1 to 6 are views showing a first embodiment of the variable color headlamp for automobiles according to the present invention, and FIG. 1 is a partially cutaway front view of the beam flap, and FIG. Figure 143 is a cross-sectional view of the headlamp taken along the horizontal direction and seen from below, Figure 4 is a cross-sectional view showing the pivot joint, Figure 5 is a cross-sectional view showing the left and right angle adjustment bolts, etc. 6 is an exploded perspective view showing the connecting portion of the drive shaft swing arm, and FIGS. 7 to 9 are views showing a second embodiment of the present invention, and FIG. 7 is a view of the headlamp. 2 is a sectional view corresponding to FIG. FIG. 2 is a cross-sectional view corresponding to FIG. 2; 13...Valve 14...Reflector 21, 41.42...Filter 28, 44...Drive unit

Claims (1)

[Claims] An automobile in which a reflector having a bulb is pivotally coupled and movably arranged in a housing, and the optical axis position can be adjusted by moving the reflector around the pivot coupling position by operating a position adjustment means. In the headlamp, a filter for discoloring light from a bulb is movably disposed within the reflector, and a drive unit for driving the filter is disposed near the pivot coupling position of the reflector. Variable color headlamps for automobiles.