JP2004050885A - Lighting control circuit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a lighting control circuit for obtaining a common lighting circuit when a lamp unit for a rear lamp is used for a turn lamp. <P>SOLUTION: This lighting control circuit comprises a supply current switching means which is connected to a lamp unit having a light source fitting part for a rear lamp and a light source fitting part for a turn lamp and connects a flashing current conductive wire with a flashing current running therein to either the light source fitting part for the turn lamp or a light source fitting part for a tail lamp, a conductive state detecting means to detect a conductive state between the supply current switching means and the light source fitting part for the turn lamp in order to determine whether or not a lamp light source for the turn lamp is fitted to the light source fitting part for the turn lamp, and a control unit to control the supply current switching means based on a turn lamp flashing signal received from a vehicle body and the result of detection by the conductive state detecting means. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a lighting control circuit capable of blinking and lighting a rear lamp light source as a lamp light source for a turn lamp.
[0002]
[Prior art]
FIG. 8 is a diagram showing the vehicle 30 from the front and the rear of the vehicle. FIGS. 9A and 9B show the left side of the lamp units 31 and 32 installed at the left and right rear portions of the vehicle 30 shown in FIG. FIG. 3 is a perspective view showing a lamp unit 31 installed in the lighting device. Vehicles used in Japan, as shown in FIG. 9A, turn on the lamp 33 for the turn lamp in orange and turn on the lamp 34 for the rear lamp (tail lamp and stop lamp) in red according to vehicle regulations. Is obliged to do so.
[0003]
[Problems to be solved by the invention]
However, vehicles used in foreign countries are not restricted by Japanese vehicle regulations. Therefore, as shown in FIG. 9B, the orange lamp light source 33 installed at the position of the turn lamp is removed, and the tail lamp or the tail lamp is removed. There is a vehicle that functions as a turn lamp by blinking a lamp 34 for a stop lamp.
[0004]
In order to produce a vehicle having different turn lamp lighting methods without changing the circuit configuration of the vehicle body, a plurality of types of lighting circuits 35 and 35 'corresponding to each lighting method are created and mounted. Needed.
[0005]
For this reason, when assembling the lighting circuit, it is necessary to assemble different types of lighting circuits 35 and 35 'for each use area, and there has been a problem that the lighting circuit is likely to be erroneously assembled.
[0006]
In addition, since it is necessary to create a plurality of types of lighting circuits 35 and 35 ', the cost tends to increase, and there is a problem that it is difficult to reduce the cost by mass production, particularly for a lighting circuit for an area where the number of production is small.
[0007]
The present invention has been made in view of the above problems, and it is an object of the present invention to provide a lighting control circuit that can use a common lighting circuit when a lamp for a rear lamp is used as a turn lamp. I do.
[0008]
[Means for Solving the Problems]
In order to solve the above problems, the invention according to claim 1 includes a rear lamp light source mounting portion for mounting a rear lamp lamp light source and a turn lamp light source mounting portion for mounting a turn lamp lamp light source, A lighting control circuit connected to a lamp unit having the rear lamp light source mounted on the rear lamp light source mounting portion, wherein the turn lamp light source or the rear lamp light source mounted on the turn lamp light source mounting portion. Supply current switching means for connecting a blinking current conducting line through which a blinking current for blinking either one of them to the turn lamp light source mounting portion or the tail lamp light source mounting portion, To determine whether or not the turn lamp light source is mounted on the turn lamp light source mounting portion A conduction state detecting means for detecting a conduction state from the supply current switching means to the turn lamp light source mounting portion, and, when a turn lamp blink signal is received from a vehicle body, the blinking current conduction line is turned. Controlling the supply current switching means to be connected to the lamp light source mounting portion, and after controlling the supply current switching means, when the conduction state detecting means detects that there is no conduction, the blinking current conduction line Is connected to the light source mounting portion for the rear lamp, and when the conduction state detecting means detects that there is conduction after the control of the supply current switching means, the blinking current is controlled. And a control unit for controlling the supply current switching means so as to connect a conductive line to the turn lamp light source mounting unit. .
[0009]
According to a second aspect of the present invention, in the lighting control circuit according to the first aspect, a current conduction line for a stop lamp that flows a current for lighting the rear lamp light source as a stop lamp, and the rear lamp light source as a tail lamp. A tail lamp current conduction line for passing a current for lighting a lamp, the stop lamp current conduction line and the tail lamp current conduction line are connected to the supply current switching means, and the control unit includes a vehicle body unit. When the turn lamp blinking signal is received, and when the supply current switching means is controlled to connect the blinking current conduction line to the rear lamp light source mounting portion, the stop lamp current conduction line And the current flowing through the blinking current conducting line is smaller than the current flowing through the tail lamp current conducting line. Controlling the supply current switching means so as previously to flow to the rear lamp light source mounting portion and said.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a perspective view schematically showing a vehicle lamp 3 including a lighting control circuit 1 and a lamp unit 2 according to the present invention. The lamp unit 2 is provided with a rear lamp light source mounting portion 5 for mounting the rear lamp lamp light source 4 and a turn lamp light source mounting portion 7 for mounting the turn lamp lamp light source 6. The rear lamp light source 4 functions as a stop lamp by emitting high-brightness red light when the brake is depressed, and functions as a tail lamp by emitting low-brightness red light when the light switch is turned on. . The lamp unit 2 shown in FIG. 1 is a lamp unit provided on the rear left side of the vehicle, and a lamp unit in which the configuration of the lamp unit 2 shown in FIG.
[0011]
The lighting control circuit 1 includes three input conducting lines 11, a tail lamp input line 8, a stop lamp input line 9, and a turn lamp input line 10, extending from a power supply (not shown) of the vehicle body. Three signal lines 12 (a signal line 13 for a tail lamp, a signal line 14 for a stop lamp, and a signal line 15 for a turn lamp) that transmit information on whether or not a voltage is applied to each input line of the conduction line 11 in real time. Are connected as input lines.
[0012]
Also, two output conducting lines 18 are provided as output lines: a rear lamp output line 16 and a turn lamp output line 17. The rear lamp output line 16 is a rear lamp light source mounting portion of the lamp unit 2. 5 and the turn lamp output line 17 is connected to the turn lamp light source mounting portion 7.
[0013]
FIG. 2 is a block diagram schematically illustrating the lighting control circuit 1 and the lamp unit 2. The lighting control circuit 1 includes an output driver unit 20, an output monitoring unit 21, an input buffer unit 22, and a control unit 23. ing. The output buffer unit 20 includes three input conducting lines 11 of a tail lamp input line 8, a stop lamp input line 9, a turn lamp input line 10, a rear lamp output line 16, and a turn lamp output line 17. And the output buffer unit 20 switches the connection between the input line of the input conductive line 11 and the output line of the output conductive line 18 so that any one of them is connected. The current flowing through the input line is supplied to the tail lamp output line 16 and the turn lamp output line 17 to turn on the turn lamp lamp light source 6 and blink the rear lamp lamp light source 4.
[0014]
The output monitoring unit 21 is provided on the turn lamp output line 17, and detects whether or not a current flows through the turn lamp output line 17, and outputs the turn lamp light source mounting unit 7 to the turn lamp light source mounting unit 7. It is determined whether or not the lamp light source 6 is installed (attached).
[0015]
The input buffer unit 22 is connected to three signal lines 12 of a tail lamp signal line 13, a stop lamp signal line 14, and a turn lamp signal line 15. The input buffer unit 22 is connected to a vehicle body. The type of the input line to which the voltage is applied by the power supply can be determined based on the type (13 to 15) of the signal line to which information indicating that the voltage is applied is transmitted.
[0016]
The control unit 23 controls the output driver unit 20 based on the judgment of the input buffer unit 22 and the output monitoring unit 21. Hereinafter, specific control of the output driver unit 20 by the control unit 23 will be described.
[0017]
When the light switch is off and the turn signal is not operated, when the driver steps on the brake, the voltage is applied only to the input line 9 for the stop lamp, and the stop lamp signal line 14 is used for the stop lamp. Information indicating that a voltage has been applied to the input line 9 is transmitted to the input buffer unit 22. On the other hand, since the light switch is off, no voltage is applied to the tail lamp input line 8, no information to the effect that a voltage has been applied to the tail lamp input line 8 is transmitted to the tail lamp signal line 13, and the direction indicator is turned off. Since no operation is performed, no voltage is applied to the turn lamp input line 10, and information indicating that a voltage is applied to the turn lamp input line 10 is not transmitted to the turn lamp signal line 15.
[0018]
The control unit 23 determines that the voltage is applied only to the stop lamp input line 9 based on the information of the signal line 12, and as shown in FIG. 3, the stop lamp input line 9 and the rear lamp output line 16 (Arrow A shown in FIG. 3) to control the output buffer unit 20 so that the rear lamp light source 4 emits red light of high brightness. Similarly, when the light switch is on and the brake is not depressed and the turn signal is not operated, the control unit 23 uses the information on the signal line 12 to output the tail lamp input line 8. It is determined that the voltage is applied only to the output buffer unit 20 so that the tail lamp input line 8 and the rear lamp output line 16 are connected (arrow B shown in FIG. 4) as shown in FIG. Under the control, the lamp light source 4 for the rear lamp emits red light of low brightness.
[0019]
When the turn signal is operated when the light switch is off and the brake is not depressed, the voltage is applied only to the turn lamp input line 10 and the turn lamp signal line 15 is used to input the turn lamp signal. Information that a voltage has been applied to the line 10 is transmitted to the input buffer unit 22. On the other hand, since the light switch is off, no voltage is applied to the tail lamp input line 8, information indicating that the voltage is applied to the tail lamp input line 8 is not transmitted to the tail lamp signal line 13, and the brake is depressed. Since no voltage is applied, no voltage is applied to the stop lamp input line 9, and information indicating that a voltage has been applied to the stop lamp input line 9 is not transmitted to the stop lamp signal line 14.
[0020]
The control unit 23 determines that the voltage is applied only to the turn lamp input line 10 based on the information of the signal line 12, and outputs so that the turn lamp input line 10 and the turn lamp output line 17 are connected. The buffer unit 20 is controlled. When the turn lamp light source 6 is installed in the turn lamp light source mounting portion 7, the current of the turn lamp input line 10 flows through the turn lamp light source mounting portion 7 as shown in FIG. The arrow light C shown in FIG. 5, the lamp light source 6 for the turn lamp on the operation direction side of the direction indicator flashes orange light.
[0021]
On the other hand, when the turn lamp light source 6 is not installed in the turn lamp light source mounting portion 7, even if the turn lamp input line 10 and the turn lamp output line 17 are connected, the turn lamp output line 17 is connected. No current flows through. The control unit 23 determines that the turn lamp lamp light source 6 is not installed, based on the detection result of no power supply by the output monitoring unit 21.
[0022]
When the lamp light source 6 for the turn lamp is not installed, the control unit 23 controls the output buffer unit 20 as shown in FIG. The input line 10 is connected (arrow D shown in FIG. 6). As described above, when the turn lamp lamp light source 4 is installed, the turn lamp illumination light source 4 is blinked, and it is determined that the turn lamp lamp light source 6 is not installed according to the energized state of the output monitoring unit 21. In this case, the lamp light source 4 for the rear lamp is turned on and off as a turn lamp, so that it is not necessary to install a lighting circuit device having a different lighting method depending on whether or not the lamp light source 6 for the turn lamp is attached. Can be achieved.
[0023]
When the lamp light source 4 for the rear lamp is turned on as a tail lamp or as a stop lamp, information indicating that a current has been applied to the input line 10 for a turn lamp and a voltage has been applied to the input line 10 for a turn lamp is a turn lamp. When the signal is transmitted to the control unit 23 via the signal line 15 for control, the control unit 23 controls the output buffer unit 20 so as to connect the input line 10 for the turn lamp and the output line 17 for the turn lamp, Based on the detection result of the output monitoring unit 21, it is determined whether or not the lamp light source 6 for a turn lamp is mounted on the light source mounting unit 7 for a turn lamp. When the turn lamp lamp light source 6 is mounted on the turn lamp light source mounting portion 7, a current flows through the turn lamp output line 17, and the turn lamp lamp light source 6 blinks.
[0024]
When the control unit 23 determines that the turn lamp light source attachment unit 7 is not attached to the turn lamp light source attachment unit 7 based on the detection result of the output monitoring unit 21, the control unit 23 controls the output buffer unit 20. As a result, as shown in FIG. 7, the turn lamp input line 10 is preferentially connected to the rear lamp output line 16 on the operation direction side of the direction indicator, rather than the tail lamp input line 8 and the stop lamp input line 9. 7 (arrow E shown in FIG. 7), the lamp light source 4 for the rear lamp blinks as a turn lamp.
[0025]
As described above, even when the current flowing through the tail lamp input line 8 or the stop lamp input line 9 turns on the rear lamp lamp light source 4, the current is applied to the turn lamp input line 10 and the turn lamp input line 10 is further turned on. When the lamp lamp light source 6 is not installed in the turn lamp light source mounting portion 7, the turn lamp input line 10 is preferentially connected to the rear lamp output line 16, and the rear lamp lamp light source 4 is turned on. By turning on, the lamp light source for the rear lamp on the operation direction side by the turn signal blinks red as a turn lamp, and the lamp light source for the rear lamp on the opposite side can be lit red as a tail lamp or a stop lamp. To be able to tell the direction the vehicle is going to turn by flashing red A, it is possible to signal the presence of the self-vehicle by the red light.
[0026]
As described above, when the lamp light source 4 for the rear lamp is used as a turn lamp, the control unit 23 controls the output driver unit 20 according to the detection results of the output detection unit 21 and the input buffer unit 22 to turn on the lamp. The cost can be reduced by sharing the circuit. Further, the lighting circuit can be shared to prevent the lighting circuit from being erroneously assembled, and it is easy to speed up the assembling process.
[0027]
Although the lighting control circuit according to the present invention has been described with reference to the drawings, the structure of the lighting control circuit according to the present invention is not limited to the above, and may have another configuration.
[0028]
【The invention's effect】
Hereinafter, the lighting control circuit according to the present invention, by adopting the above configuration, can use a common lighting circuit when a lamp for a rear lamp is used as a turn lamp, and can reduce costs by using common components. It becomes possible to plan.
[0029]
Further, the lighting circuit can be shared to prevent the lighting circuit from being erroneously assembled, and it is easy to speed up the assembling process.
[Brief description of the drawings]
FIG. 1 is a perspective view schematically showing a vehicle lamp including a lighting control circuit and a lamp unit according to the present invention.
FIG. 2 is a block diagram schematically illustrating a vehicle lamp including a lighting control circuit and a lamp unit according to the present invention.
3 is a block diagram showing a state in which a stop lamp input line and a rear lamp output line are connected in the lighting control circuit shown in FIG. 2;
4 is a block diagram showing a state in which a tail lamp input line and a rear lamp output line are connected in the lighting control circuit shown in FIG. 2;
5 is a block diagram showing a state in which a turn lamp input line and a turn lamp output line are connected in the lighting control circuit shown in FIG. 2;
FIG. 6 is a block diagram schematically showing a vehicular lamp including a lighting control circuit according to the present invention and a lamp unit in which a turn lamp light source is not installed, wherein a turn lamp input line and a rear lamp output are provided. FIG. 4 is a block diagram showing a state where the lines are connected.
FIG. 7 is a block diagram schematically showing a vehicle lamp including a lighting control circuit according to the present invention and a lamp unit in which a lamp light source for a turn lamp is not installed, wherein a turn lamp input line is connected to a tail lamp; FIG. 4 is a block diagram showing a state where the input line is connected to a rear lamp output line with higher priority than an input line and a stop lamp input line.
FIG. 8 is a view showing a rear front of a vehicle including a conventional lighting circuit and a lamp unit.
FIG. 9 is a perspective view schematically showing a vehicular lamp including a conventional lighting circuit and a lamp unit.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lighting control circuit 2, 31, 32 Lamp unit 3 Vehicle lamp 4 Rear lamp lamp light source 5 Rear lamp light source mounting portion 6 Turn lamp lamp light source 7 Turn lamp lamp mounting portion 8 Tail lamp input line (Tail lamp current conducting wire) )
9 Stop lamp input line (stop lamp current conducting line)
10 Turn lamp input line (blinking current conduction line)
DESCRIPTION OF SYMBOLS 11 Input conduction line 12 Signal line 13 Tail lamp signal line 14 Stop lamp signal line 15 Turn lamp signal line 16 Rear lamp output line 17 Turn lamp output line 18 Output conduction line 20 Output buffer section (supply current switching means )
21 Output monitoring unit (conduction state detection means)
22 Input Buffer Unit 23 Control Unit 33 Lamp for Turn Lamp 34 Lamp 35, 35 'for Rear Lamp Lighting Circuit

Claims (2)

A rear lamp light source mounting portion for mounting a rear lamp light source and a turn lamp light source mounting portion for mounting a turn lamp light source were provided, and the rear lamp light source was mounted on the rear lamp light source mounting portion. A lighting control circuit connected to the lamp unit,
A blinking current conducting wire through which a blinking current for blinking one of the turn lamp lamp light source and the rear lamp lamp light source attached to the turn lamp light source mounting portion is connected to the turn lamp light source mounting portion. Supply current switching means connected to one of the tail lamp light source mounting portion or,
A continuity detection for detecting a continuity state from the supply current switching unit to the turn lamp light source mounting portion to determine whether the turn lamp light source is mounted on the turn lamp light source mounting portion. Means,
When a turn lamp blinking signal is received from the vehicle main body, the supply current switching unit is controlled to connect the blinking current conduction line to the turn lamp light source mounting unit,
After the control of the supply current switching unit, if the conduction state detection unit detects that there is no conduction, the control unit controls the supply current switching unit to connect the blinking current conduction line to the rear lamp light source mounting unit. And
After the control of the supply current switching unit, when the conduction state detection unit detects that there is conduction, the supply current switching unit is configured to connect the blinking current conduction line to the turn lamp light source mounting unit. A lighting control circuit, comprising: a control unit that controls the lighting. A current conducting wire for a stop lamp for flowing a current for lighting the rear lamp light source as a stop lamp,
A tail lamp current conducting wire for flowing a current for lighting the rear lamp light source as a tail lamp,
The stop lamp current conduction line and the tail lamp current conduction line are connected to the supply current switching unit,
The control unit, when receiving a turn lamp blinking signal from the vehicle body unit, when controlling the supply current switching means to connect the blinking current conduction line to the rear lamp light source mounting unit, The supply current switching so that a current flowing through the blinking current conduction line flows to the rear lamp light source mounting portion with priority over a current flowing through the stop lamp current conduction line and a current flowing through the tail lamp current conduction line. The lighting control circuit according to claim 1, wherein the lighting control circuit controls the means.

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