JP2676932B2 - Variable color headlamp for automobile - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pair of variable color headlamps arranged on the front surface of an automobile, and more particularly to a variable color headlamp in which a main lamp and a position lamp are provided in a reflector. It is a thing.

[Prior Art] Among conventional headlamps for automobiles, there is one having a variable color, for example, as shown in FIG.
61-202803). In the figure, reference numeral 1 denotes a reflector,
A front lens 2 is fixed to a front surface of the reflector 1,
A main lamp 3 is disposed in the reflector 1 and a yellow filter 4 is rotatably disposed on the main lamp 3.

The yellow filter 4 is rotatably arranged via gears 5, etc. by a driving force from a drive unit (not shown). By rotating the yellow filter 4, the yellow filter 4 is driven by the main lamp 3. I try to change the light.

[Problems to be Solved by the Invention] However, in such a conventional one, there is one in which another position lamp of the main lamp 3 is arranged in the reflector 1. In this case, in the main lamp 3, Although the light from the position lamp may be different from the light from the position lamp, the light from the position lamp is much weaker than the light from the main lamp 3, so the difference in color does not affect it. When the lamp 3 is disconnected, this headlamp has the color of the position lamp, while the other headlamp has the variable color of the main lamp 3, and the left and right headlamps have different colors. There's a problem.

[Means for Solving the Problems] The present invention has been made in view of the above-mentioned conventional problems, and a pair of left and right are provided in the front part of an automobile, and a main lamp and a position lamp are provided in a reflector. In a variable color headlamp for an automobile in which a filter for changing the color of the light of the main lamp is movably provided by a drive unit, a disconnection detecting means for detecting disconnection of the main lamp and one of the disconnection detecting means is used. When a disconnection of the main lamp is detected, the variable color headlamp for an automobile has a switching means for driving the filter to adjust the light of the other main lamp to the color of the position lamp.

[Operation] According to such means, when one of the main lamps is disconnected, the disconnection detecting means detects this disconnection state. Then, the signal from the disconnection detection means is sent to the switching means,
By this switching means, the filter is driven by the drive unit, etc., and the color of the light of the main lamp of the other head lamp which is not broken is matched with the color of the light of the position lamp.

Therefore, even if the headlamp is broken, the colors of the left and right headlamps do not differ from each other as in the conventional case, and the headlamps have the same color.

[Examples] Hereinafter, the present invention will be described based on examples.

1 to 4 are views showing a first embodiment of the present invention.

First, the structure will be described. In FIG. 2, reference numeral 11 is a housing, and the 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 15 having a main lamp 13 for emitting white light and a position lamp 14 for emitting yellow light is mounted in the housing 11. It is arranged.

A mechanism for changing the light from the main lamp 13 is provided.

Specifically, base ends 17a, 18a of a pair of arms 17, 18 are rotatably mounted on a base 16 provided outside the reflector 15, and distal ends 17b, 18b of the arms 17, 18 are attached to the bases 16a, 18b. Connecting member
It is linked through 19. Then, a cylindrical filter 21 is mounted via the belt 20 of the connecting member 19, and the filter 21 is configured so that the main lamp 13 can be covered or removed by rotating the arms 17 and 18. Has been done. The filter 21 is made of a yellow and transparent material such as glass or heat-resistant plastic. Further, a ring-shaped edge portion 21a for reinforcement is formed at one end of the filter 21.

The filter 21 is driven by the following mechanism.

An elongated hole 17d is formed in the extension 17c formed on one arm 17, and the drive shaft 25 of the drive unit 24 is formed in the elongated hole 17d.
The tip of the lever 26 that swings by extending in a direction orthogonal to
By inserting 26a and rotating the lever 26, the arm 17 is rotated. Further, a pair of stoppers 27 are formed on both sides of the extension 17c of the one arm 17, and the swing range of the arm 17 is determined by the pair of stoppers 27.

As shown in FIG. 1, this drive unit 24 is connected to a switching circuit 29 as switching means, and this switching circuit
29 is connected to the switching unit 30 and the disconnection sensor 31 as disconnection detection means.

The drive unit 24 has a motor 32 and a control circuit 33. The control circuit 33 is rotatably arranged with three first, second and third fixed contacts 34, 35, 36. And a movable contact 37 having three first, second and third contact portions 37a, 37b, 37c are provided, and two first and second fixed contacts 34, 35 are provided.
The diodes 38 and 39 are connected to the respective ones, and the remaining one third fixed contact 36 is connected to one terminal of the motor 32.

The diodes 38 and 39 are connected to the movable contact 40a of the first relay 40 of the switching circuit 29, and the other terminal of the motor 32 is connected to the movable contact 41a of the second relay 41 of the switching circuit 29. . The first fixed contact 40b of the first relay 40
Is connected to the positive side of the power source, and the first fixed contact 41b of the second relay 41 is connected to the negative side of the power source. Also,
The second fixed contact 40c of the first relay 40 is connected to the second fixed contact 42c of the first relay 42 of the changeover switch 30 and the first fixed contact 43b of the second relay 43. Further, the second fixed contact 41c of the second relay 41 of the changeover circuit 29 is connected to the first fixed contact 42b of the first relay 42 of the changeover switch 30 and the second fixed contact 43c of the second relay 43. The movable contact 42a of the first relay 42 is connected to the positive side of the power source, and the movable contact 43a of the second relay 43 is connected to the negative side of the power source.

Further, the exciting coil 44 of the switching circuit 29 is connected to the disconnection sensor 31.

A pair of left and right headlamps having such a configuration are arranged at the front of the vehicle.

Next, the operation of the variable color headlamp having such a configuration will be described.

In a normal state, when the main lamp 13 is not broken, the movable contact pieces 40a, 41a of both relays 40, 41 of the switching circuit 29 are in contact with the second fixed contacts 40c, 40c.

In this state, in order to change the light from the main lamp 13, the driver operates the changeover switch 30 provided in the passenger compartment to move both movable contacts 42 of the changeover switch 30.
Rotate a, 43a from the state shown in the figure to
Contact the fixed contacts 42c, 43c. As a result, the motor 32 is normally rotated via the control circuit 33, and the lever 26
Is rotated about the drive shaft 25. Then one arm
By transmitting the driving force to 17, the pair of parallel arms 17 and 18 is rotated, and the filter 21 causes the main lamp 13 to rotate.
Is covered. As a result, the light from the main lamp 13 becomes yellow. When the main lamp 13 is turned on, the position lamp 14 is always turned on (yellow light).

This will be described with reference to FIG. 1. When the motor 32 is driven, the movable contact 37 is rotated in the direction of the arrow in FIG. 1, and as shown by the chain double-dashed line in FIG. At the same time that the first contact portion 37a contacts the first fixed contact 40b, the second contact portion 37b separates from the second fixed contact 35. Due to this separation, the driving of the motor 32 is stopped and the covering state of the main lamp 13 with the filter 21 is completed. The movable contact 37
The third contact portion 37c of is always in contact with the third fixed contact 36.

In this state, yellow light is emitted from both headlamps A and B.

In this state, the main lamp 13 of one headlamp A
When is broken, a current flows through the exciting coil 44, the movable contacts 40a, 41a of the switching circuit 29 are excited and rotated,
The first fixed contacts 40b, 41b are contacted. Then, since the current is directly supplied from the power source in the same flow as above without passing through the changeover switch 30, the light from the main lamp 13 is changed to yellow in order to keep the filter 21 covered. Since the light from the position lamp 14 is yellow from the beginning, the light from both headlamps A and B maintains the yellow state as shown in FIG.

On the other hand, when the filter 21 is separated from the main lamp 13 as shown by the solid line in FIG. 1, white light is emitted from the main lamp 13 and yellow light is emitted from the position lamp 14, which are different. The light of different colors is emitted from the same headlamps A and B, but the light from the position lamp 14 is extremely weaker than the light from the main lamp 13, so the yellow light from the position lamp 14 has almost no effect, and this head The light from the lamps A and B becomes white light.

In this state, when one of the headlamps A is disconnected as shown in FIG. 4, the disconnection sensor 31 causes a current to flow in the exciting coil 44, and the movable contact pieces 40a and 41a of the switching circuit 29 are excited and rotated. , The first fixed contacts 40b, 41b. Then, the diode 39, the second fixed contact 35, and the movable contact of the control circuit 33 are fed from the positive current without passing through the changeover switch 30.
Current is supplied to 37, the third fixed contact 36, and the motor 32 in this order, and the motor 32 is rotated forward, so that the filter 21 covers the main lamp 13 as shown in FIG. To be done.

As a result, as shown in FIG. 3, one of the headlamps A, which has the main lamp 13 disconnected, becomes
From the main lamp 13 is emitted from the head lamp B, and the yellow light from the position lamp 14 is emitted from the other head lamp B. As a result, yellow light is emitted from both headlamps A and B.

Therefore, even if the main lamp 13 of one of the headlamps A is broken, light of the same color is emitted from both headlamps A and B.

 Also, FIG. 5 shows a second embodiment of the present invention.

The drive unit 54 of this embodiment is connected to a switching circuit 55 as switching means, and this switching circuit 55 is connected in series to a changeover switch 56 and a lamp switch 65, and to a disconnection switch 57 as disconnection detection means. It is connected.

The drive unit 54 has a motor 32, a relay circuit 58 and a control circuit 33. This control circuit 33, like the first embodiment, has three first, second and third fixed contacts 34, 35 and 36, and three rotatably arranged first and first fixed contacts 34, 35 and 36.
2, a movable contact 37 having third contact portions 37a, 37b, 37c is provided. One terminal of this motor 32 is a relay circuit
The first relay 59 is connected to the movable contact 59a of the second relay 59, and the other terminal is connected to the movable contact 60a of the second relay 60. Further, the first fixed contact 59b of the first relay 59 is the first fixed contact 34 of the control circuit 33, and the second fixed contact 60c of the second relay 60 is the second fixed contact 35 of the control circuit 33. Each is connected. Further, the second fixed contacts 59c, 60c of the first and second relays 59, 60 of the relay circuit 58 are connected to the negative power source.

Further, the third fixed contact 36 of the control circuit 33 is connected to the positive power source.

The exciting coil 61 of the relay circuit 58 has one terminal connected to the negative power source and the other terminal connected to the switching circuit 55.
This normally closed contact 62 is connected to one terminal of the normally closed contact 62.
The other terminal is connected to the fixed contact 63 of the changeover switch 56, and the movable contact 64 of the changeover switch 56 is connected to the lamp switch 65.

The exciting coil 66 of the switching circuit 55 is connected to the disconnection sensor 57.

With such a configuration, as shown in FIG. 5, in order to change the light from the main lamp 13 from white light to yellow, the movable contact piece of the changeover switch 56 is operated to change the state. Move it to the OFF state as indicated by the middle two-dot chain line.
Then, no current is supplied to the exciting coil 61 of the relay circuit 58, and the two movable contacts 59a, 60a of the relay circuit 58 come into contact with the second fixed contacts 59c, 60c. Then, the positive side power supply constitutes the third fixed contact 36, the movable contact 37, the second fixed contact 35, the second relay 60, the motor 32, the first relay 59, and the negative side power supply circuit, and the motor 32 rotates forward. Been arm 17,18
Is rotated to move from the state shown by the solid line in the figure to the state shown by the chain double-dashed line, and the filter 21 is covered by the main lamp 13.

As a result, the light from the main lamp 13 changes to yellow.

On the other hand, as shown in the figure, when the main lamp 13 of one of the headlamps A is disconnected from the state where the light from the main lamp 13 is white light, a current is supplied from the disconnection sensor 57 to the exciting coil 61. The normally closed contact 62 is excited, and the switching circuit 55 is turned off. Then, as in the case where the light changes to yellow as described above, the exciting coil of the relay circuit 58 is
No current is supplied to 61, and both moving contacts of this relay circuit 58
59a and 60a are contacted with both the second fixed contacts 59 and 60c, and the positive side power source supplies the third fixed contact 36, the movable contact 37, the second fixed contact 35,
The circuit of the second relay 60, the motor 32, the first relay 59, and the negative side power supply is configured, and the motor 32 is rotated in the reverse direction to filter.
21 is covered by the main lamp 13.

As a result, the light from the main lamp 13 changes to yellow. Therefore, as in the first embodiment, both headlamps A and B are
Becomes yellow.

The other configuration and operation are the same as those of the first embodiment, and thus the description is omitted.

[Effects of the Invention] As described above, according to the present invention, a disconnection detecting means for detecting disconnection of a main lamp and a filter for detecting disconnection of one of the main lamps by the disconnection detecting means. When the main lamp of one of the headlamps is disconnected, the color of the main lamp of the other headlamp is adjusted to the position by the switching means for driving the other main lamp to match the color of the position lamp. The color of the headlamps can be the same as the color of the lamps, and the color of the left and right headlamps can be the same as in the conventional case.

[Brief description of the drawings]

1 to 4 are views showing a first embodiment of a variable color headlamp for an automobile according to the present invention. FIG. 1 is an electric circuit diagram of the headlamp, and FIG. 2 is a horizontal direction of the headlamp. Sectional views taken along the lines, FIG. 3 and FIG. 4 are explanatory views showing the action of a pair of headlamps, respectively, and FIG.
FIG. 6 is an electric circuit diagram corresponding to FIG. 1 showing an embodiment, and FIG. 6 is a sectional view taken along the vertical direction showing a conventional headlamp. 13 …… Main lamp 14 …… Position lamp 15 …… Reflector 21 …… Filter 24,54 …… Drive unit 29,55 …… Switching circuit (switching means) 31,57 …… Disconnection sensor (disconnection detection means) A, B: Headlamp

Claims (1)

(57) [Claims] 1. An automobile in which a pair of left and right are provided in the front of the automobile, a main lamp and a position lamp are provided in a reflector, and a filter for changing the color of the main lamp is movably provided by a drive unit. In the variable color headlamp for use in a vehicle, a disconnection detecting means for detecting disconnection of the main lamp, and when disconnection of one of the main lamps is detected by the disconnection detecting means, the filter is driven to drive the other main lamp. A variable color headlamp for an automobile, comprising: switching means for adjusting light to a color of a position lamp.