JPH0451364Y2 - - Google Patents

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to automobile headlights, and more specifically, the present invention is concerned with the function of a headlamp that emits white light and the function of a fog lamp that emits yellow light in one light chamber. This invention relates to an automobile headlamp that has both functions.

<Prior Art> This type of automobile headlamp is disclosed in Japanese Utility Model Application No. 61-202802, which was previously proposed by the applicant of the present invention. What we proposed earlier was a headlamp that emits white light and a fog lamp that emits yellow light by rotating a globe whose upper half is colorless and transparent and whose lower half is yellow by rotating it half a turn around the bulb. Because the lamp was configured to perform two functions, when the bulb was turned on, white light and yellow light inevitably mixed together, resulting in a problem in which the functions of the headlamp and fog lamp tended to become unclear from each other. However, in order to prevent white light and yellow light from mixing, using only the upper half of the reflector or the upper half of the bulb can contribute to light distribution. A problem occurs in which the amount of light is halved and the desired light distribution cannot be obtained.

<Problem to be solved by the invention> This invention was made in view of the conventional problems described above, and it eliminates the mixing of white light and yellow light when the bulb is turned on, and improves the function of the headlamp and the fog lamp. It is an object of the present invention to provide a headlamp for an automobile that can clearly demonstrate the functions of the present invention and that can also exhibit light distribution performance equivalent to that of a normal headlamp or fog lamp.

<Means for solving the problem> The vehicle headlamp of the present invention that achieves the above purpose is:
A yellow globe supported by a globe holder is installed concentrically around the outer periphery of the bulb, and the globe holder is movably installed in a guide elongated hole formed in the reflecting mirror along the optical axis direction. The holder is connected to a drive link mechanism that is installed on the outer bottom of the reflector and consists of a parallel moving link that moves in the front and back direction and a drive arm that swings in the horizontal direction, and the yellow glove is moved through the guide length through the glove holder. It is characterized by being able to move freely back and forth along the hole.

<Example> Hereinafter, an example of an example of the present invention will be described based on the drawings.

In the figure, reference numeral 1 denotes a lamp body formed into an approximately oblong rectangular shape from the front. A reflector 2 is installed inside the lamp body, and a socket-integrated H4 is installed in the rear opening 2a of the reflector 2.
A square halogen bulb 3 is installed, a yellow globe 4 is installed concentrically with the bulb 3 on the outer periphery of the bulb 3, and a front lens 5 is attached to the front opening of the lamp body 1 to form a square headlight. .

The reflecting mirror 2 has its front opening formed into a generally horizontally oblong rectangular shape from the front, corresponding to the shape of the lamp body 1, and its upper wall portion 2b and lower wall portion 2c are formed flat so as not to directly contribute to light distribution. A mechanism for moving the yellow glove 4 in the front-back direction is installed in the lower wall portion 2c.

The yellow globe 4 is formed into a cylindrical shape with a diameter slightly larger than the outer diameter of the bulb 3 using a transparent glass material or resin material colored yellow.
It is formed to a length that can cover the entire glass part 3b except for the shade part 3a, and is fixedly supported by the globe holder 6 and installed at the outer circumferential position of the bulb 3 so as to be concentric with the bulb 3. Then, this yellow glove 4 is passed through the glove holder 6 to the valve 3.
It is made to be able to freely move back and forth along the longitudinal direction, ie, the optical axis direction, between a position where the glass portion 3b of the bulb 3 can be completely covered and a position where the glass portion 3b can be completely exposed.

The globe holder 6 is located in the lamp chamber 7 above the reflector 2 and has a pedestal part 6a for firmly supporting the yellow globe 4, and a gap part 8 between the outer bottom of the reflector 2 and the lamp body 1. Position and drive linkage 9
The driving connecting part 6b connected to the drive connecting part 6b, and the guide collar 6c located between the pedestal part 6a and the driving connecting part 6b and projecting on both left and right sides are formed into the same body,
It is formed to have approximately the same length as the yellow globe 4, and is installed in the guide elongated hole 10 of the reflecting mirror 2 so as to be movable back and forth. That is, a guide elongated hole 10 of a required length is formed in the lower wall portion 2c of the reflecting mirror 2 at a position directly below the bulb 3 along the optical axis direction, and the glove holder 6 is driven and connected to the guide elongated hole 10. Part 6
b is inserted, the guide collar 6c is placed on the edge of the guide elongated hole 10, the yellow glove 4 is placed and fixed on the upper surface of the pedestal part 6a of the glove holder 6 protruding into the lamp chamber, and the drive connecting part 6b is The drive link mechanism 9 is connected to two bosses 61b arranged perpendicularly to the longitudinal direction of the glove holder 6 and protruding from the lower surface, and the glove holder 6 is formed as an opening in the lower wall 2c of the reflecting mirror 2. Guide long hole 10
The optical axis is moved in the optical axis direction (back and forth direction) along the optical axis.

In addition, when the yellow glove 4 is fixed to the pedestal part 6a of the glove holder 6, the yellow glove 4 may be placed directly on the upper surface of the pedestal part 6a and fixed with adhesive, screws, etc.; It is also possible to support both ends of the yellow glove 4 in a pinch-like manner with fixtures 11 as shown in FIG. or,
A support piece 12 having spring properties is attached to the bottom of the drive connection part 6b of the glove holder 6, and the support piece 1
The glove holder 6 is movably installed in the guide elongated hole 10 of the reflecting mirror 2 by sandwiching the mouth edge of the guide elongated hole 10 of the reflecting mirror 2 with the guide collar 6c.

The drive link mechanism 9 for moving the glove holder 6 in the front-rear direction includes a parallel movement link 9a that moves in parallel in the front-rear direction, a drive arm 9b that swings in the horizontal direction, and a drive for operating the drive arm 9b. It consists of 14 units. The parallel movement link 9a has an elongated hole 1 along its longitudinal direction.
3, and two bosses 61b hanging downwardly protruding from the lower surface of the drive connection portion 6b of the glove holder 6 are inserted and connected into the elongated hole 13, and a drive arm 9b is connected to one end of the bosses 61b. Drive arm 9b
connects the parallel movement link 9a to the tip of the connecting pin 9.
c is also rotatably connected, and the base end is connected to the rotating shaft 15 of the drive unit 14,
It is installed in the gap 8 between the outer bottom of the reflecting mirror 2 and the lamp body 1 together with the parallel movement link 9a so that it can swing freely in the horizontal direction. Therefore, the parallel movement link 9a is inserted into the elongated hole 13 and connected to the glove holder 6.
The glove holder 6 is held perpendicular to the longitudinal direction of the glove holder 6 by two bosses 61b extending downwardly from the lower surface of the drive connecting portion 6b, and is moved in parallel in the front-rear direction by the horizontal swinging motion of the drive arm 9b. (See Figure 3). The drive unit 14 for horizontally swinging the drive arm 9b is
It is composed of an electric motor 16, a reduction gear 11, and a switch circuit 18, and is installed in the space between the reflector 2 and the lamp body 1, and the electric motor 16 rotates the rotating shaft 15 of the reduction gear 17 in forward and reverse directions to drive the drive arm 9b. oscillate horizontally. As shown in FIG. 5, the switch circuit 18 for controlling the swing includes a lamp changeover switch 19, a fixed electrode 20 formed on the printed base, and a rotating shaft 16 of the electric motor 16.
and a rotary contact 21 connected to a.

As shown in FIGS. 1 and 3, the bulb 3 is turned on while the yellow globe 4 is advanced through the glove holder 6 to a position where the glass portion 3b of the bulb 3 can be completely exposed. Then, the light P from the bulb 3 enters the reflecting mirror 2 as it is, and the reflecting mirror 2 irradiates the light forward as white light, so that it functions as a headlamp.
Furthermore, if the bulb 3 is turned on with the yellow globe 4 retracted to a position where it can completely cover the glass portion 3b of the bulb 3, as shown by the two-dot chain line in FIG. P passes through the yellow globe 4, is colored yellow, and enters the reflecting mirror 2, where it is irradiated forward as yellow light, so that it functions as a fog lamp.

<Effects of the invention> Since the automobile headlight of the invention is constructed in this way,
When it is not lit, it looks like a normal headlamp (one headlamp), and when it is turned on, it can function as a headlamp (white light) or a fog lamp (yellow light) as needed. .

Moreover, there is no risk of mixing white light and yellow light when the bulb is turned on, and the functions of a headlamp and a fog lamp can be clearly demonstrated, and the mechanism that operates the yellow globe can directly contribute to light distribution. Since it can be installed on the lower wall portion of the reflective mirror, it can exhibit the same light distribution performance as a normal headlamp or fog lamp.

Furthermore, the mechanism for moving the yellow globe in the optical axis direction is simple, and the front shape of the headlight is neither horizontally nor vertically long, so the headlight does not become large and can be easily installed on the vehicle body. There are no space constraints, and at the same time there are no design constraints. Moreover, the glove holder that supports the yellow glove is moved in the front and back direction using a parallel movement link that moves in parallel in the front and back direction and a drive arm that swings in the horizontal direction, so a high propulsive force for back and forth movement can be obtained. It will be done.

Therefore, the intended purpose can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional side view showing an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1, and FIG.
FIG. 4 is an exploded perspective view of the main part, and FIG. 5 is a circuit diagram of the switch circuit. In the drawings, 1 is a lamp body, 2 is a reflector, 3 is a bulb, 4 is a switch circuit diagram.
is the yellow glove, 6 is the glove holder, 9 is the
indicates a drive link mechanism, 9a indicates a parallel movement link, and 9b
indicates a drive arm, and 10 indicates a guide slot.

Claims (1)

[Scope of utility model registration request] A yellow globe supported by a globe holder is installed concentrically around the outer periphery of the bulb, and the globe holder is movably installed in a guide elongated hole formed in the reflecting mirror along the optical axis direction. The holder is connected to a drive link mechanism that is installed on the outer bottom of the reflector and consists of a parallel moving link that moves in the front and back direction and a drive arm that swings in the horizontal direction, and the yellow glove is moved through the guide length through the glove holder. An automobile headlamp characterized by being movable back and forth along a hole.