JP5833520B2 - Lighting control device for saddle riding type vehicle - Google Patents

Description

  The present invention relates to a lighting control device in a straddle-type vehicle that lights a lamp according to a driver's switch operation.

  Patent Document 1 shown below discloses a configuration in which a lamp voltage is intermittently applied to a switch to prevent erroneous lighting of a lamp caused by leakage current flowing through the switch. Specifically, it is disclosed to prevent erroneous lighting of a light emitting diode due to a leakage current based on the voltage of an erroneous lighting prevention resistor connected to a switch.

JP 2012-11970 A

  However, in order to suppress the occurrence of leakage current in the switch, it is desirable that the voltage applied to the switch is low. However, since noise is generated in the vehicle due to the sound of a horn, the S / N ratio is reduced when the applied voltage is lowered. This causes a problem that the light-emitting diode is erroneously turned on.

  Therefore, an object of the present invention is to provide a lighting control device in a saddle riding type vehicle that prevents erroneous lighting of a lamp due to the influence of leakage current and noise at a constant voltage.

  The lighting control device (10) in the saddle riding type vehicle according to the present invention has the following features.

  First feature: switch means (12, 14) for lighting the lighting device (16), and intermittent power supply addition means (32) for applying a constant voltage intermittently to the switch means (12, 14) And a control means (34) for determining whether or not the switch means (12, 14) is operated based on the output voltage output from the switch means (12, 14). In the lighting control device (10), the intermittent power supply means (32) generates a voltage having a pattern waveform composed of a plurality of predetermined different duty ratios and applies the voltage to the switch means (12, 14). It is characterized by doing.

  Second feature: switch means (12, 14) for lighting the lamp (16), and intermittent power supply means (32) for applying a constant voltage to the switch means (12, 14) intermittently. And a control means (34) for determining whether or not the switch means (12, 14) is operated based on the output voltage output from the switch means (12, 14). In the lighting control device (10), the intermittent power supply adding means (32) generates a voltage having a pattern waveform composed of a plurality of predetermined different frequency modulations and applies it to the switch means (12, 14). It is characterized by doing.

  Third feature: The intermittent power supply means (32) generates a pulse voltage having a frequency higher than a frequency by human operation of the switch means and lower than a blowing frequency of a horn provided in the straddle-type vehicle. It is characterized by generating.

  Fourth feature: The voltage applied to the switch means (12, 14) is a voltage of 0 to 2 volts.

  According to the first feature of the present invention, the intermittent power supply means for intermittently applying a constant voltage to the switch means generates a voltage having a pattern waveform composed of a plurality of predetermined different duty ratios. Since the voltage is applied intermittently, the occurrence of leakage current can be suppressed by reducing the voltage applied intermittently, and erroneous lighting due to the influence of leakage current and erroneous lighting due to the influence of noise can be prevented. it can. Further, even when the S / N ratio is lowered by reducing the voltage applied intermittently, erroneous lighting can be prevented.

  According to the second feature of the present invention, the intermittent power supply means for intermittently applying a constant voltage to the switch means generates a voltage having a pattern waveform composed of a plurality of predetermined different frequency modulations. Since the voltage is applied intermittently, the occurrence of leakage current can be suppressed by reducing the voltage applied intermittently, and erroneous lighting due to the influence of leakage current and erroneous lighting due to the influence of noise can be prevented. it can. Further, even when the S / N ratio is lowered by reducing the voltage applied intermittently, erroneous lighting can be prevented.

  According to the third feature of the present invention, the intermittent power supply means has a pulse voltage with a frequency higher than the frequency by the operation of the human switch means and lower than the blowing frequency of a horn provided in the saddle type vehicle. Since it is generated, the frequency of the generated pulse voltage does not overlap with the frequency by human operation and the sounding frequency of the horn, and the accuracy of preventing erroneous lighting is improved.

  According to the fourth feature of the present invention, since the voltage applied to the switch means is a voltage of 0 to 2 volts, the occurrence of leakage current can be suppressed.

It is a block diagram of the lighting control apparatus in a saddle riding type vehicle. It is a figure which shows the waveform of the output voltage from the intermittent power supply addition means with which the frequency was modulated. It is a figure which shows the waveform of the output voltage from the intermittent power supply addition means from which the duty ratio changed. It is a flowchart which shows the lighting operation | movement of the left turn signal of a lighting control apparatus. It is a flowchart which shows the lighting operation | movement of the right turn signal of a lighting control apparatus.

  A lighting control device for a saddle riding type vehicle according to the present invention will be described in detail below with reference to the accompanying drawings.

  FIG. 1 is a block diagram of a lighting control device 10 in a saddle riding type vehicle. The lighting control device 10 includes a winker switch (switch means) 12, a hazard switch (switch means) 14, a lighting device 16, a driver winker switch 12, and a hazard switch 14 provided in a saddle-ride type vehicle such as a motorcycle. And a control device 18 that turns on the lamp 16 in response to the operation.

  The lighting device 16 includes a front left LED 20L and a rear left LED 22L provided on the left side of the front and rear of the saddle type vehicle constituting the left winker, and a front and rear right side of the straddle type vehicle constituting the right winker. A front right LED 20R and a rear right LED 22R, an indicator LED 24L indicating that the left winker is lit, and an indicator LED 24R indicating that the right winker is lit. The indicator LEDs 24L and 24R are provided in a meter unit (not shown) mounted on the saddle riding type vehicle, and function as indicators for confirming lighting.

  The control device 18 includes a step-down unit 30, an intermittent power supply unit 32, a control unit (control unit) 34, and drive units 36L and 36R. A battery 38 is connected to the step-down unit 30, and a voltage of, for example, 8 to 16 V (volts) is supplied from the battery 38 to the step-down unit 30. The step-down means 30 steps down the supplied voltage to a predetermined voltage (for example, 5 V) and supplies it to the control unit 34 and the intermittent power supply adding means 32. Note that a voltage is directly supplied from the battery 38 to the drive units 36L and 36R.

  Further, the intermittent power supply adding means 32 intermittently applies a constant voltage V <b> 1 to the turn signal switch 12 and the hazard switch 14. For example, although not shown, the intermittent power supply means 32 has a voltage dividing circuit that divides a predetermined voltage supplied from the step-down means 30 and a constant voltage V1 (for example, 0 to 2 V) divided by the voltage dividing circuit. A switch for turning on and off the output is included. Under the control of the control unit 34, the switch of the intermittent power supply adding unit 32 is turned on / off to generate a pulse voltage, and the generated pulse voltage of the voltage V1 is applied to the turn signal switch 12 and the hazard switch 14. . Note that if the voltage V1 applied intermittently to the winker switch 12 and the hazard switch 14 is set to a high voltage such as 8 to 16 V, a leak current is likely to be generated. However, in this embodiment, the voltage V1 is set to a small voltage. Thus, the occurrence of leakage current can be suppressed.

  Here, the waveform of the voltage output by the intermittent power supply adding means 32 has a unique pattern waveform for identifying whether or not a leakage current has occurred in the winker switch 12 and the hazard switch 14.

  As shown in FIG. 2, the waveform (specific pattern waveform) of the output voltage from the intermittent power supply adding means 32 is alternately changed between a voltage V0 of 0 V and a voltage V1, for example, and a pulse voltage whose frequency is modulated. It may be a waveform. That is, it may be a voltage having a pattern waveform composed of a plurality of predetermined different frequency modulations. In the example shown in FIG. 2, the pattern waveform is configured such that the duty ratio is 50% and the frequencies are modulated at 100 Hz, 50 Hz, and 200 Hz.

  In addition, as shown in FIG. 3, the waveform of the output voltage from the intermittent power supply adding means 32 is, for example, a waveform of a plurality of pulse voltages having different duty ratios that alternately change between a voltage V0 and a voltage V1 of 0V. May be. That is, it may be a voltage having a pattern waveform constituted by a plurality of predetermined different duty ratios. In the example shown in FIG. 3, the pattern waveform is configured such that the frequency is constant and the duty ratio changes at 50%, 25%, and 75%. Note that the waveform of the output voltage from the intermittent power supply adding means 32 is a pulse voltage waveform in which the voltage V0 and the voltage V1 are alternately changed and the frequency thereof is modulated, and a plurality of pulses having different duty ratios. It may be a voltage waveform.

  The frequency of the output voltage from the intermittent power supply means 32 is determined by human operation (for example, on / off operation of the turn signal switch 12 and the hazard switch 14 performed by the driver, or operation of a horn (warf) provided in the saddle type vehicle. Higher than the frequency (several Hz) by the switch operation) and lower than the blowing frequency (for example, 380 Hz to 440 Hz) of the horn provided in the saddle riding type vehicle. The waveform of the output voltage from the intermittent power supply adding unit 32 may be a pulse voltage waveform whose frequency is simply modulated or a plurality of pulse voltage waveforms having different duty ratios.

  The turn signal switch 12 is a switch that turns on and off the left turn signal light and the right turn signal light. When the driver wants to turn on the left turn signal, the driver connects the turn signal switch 12 to the first contact 12a (the left turn signal switch). If the right turn signal is to be turned on, the turn signal switch 12 is connected to the second contact 12b (the right turn signal switch is turned on).

  The first contact 12a is grounded via an erroneous lighting prevention resistor 40 (resistance value Rref) of the control device 18, and the second contact 12b is an erroneous lighting prevention resistor 42 (resistance value Rref) of the control device 18. Is grounded. When the winker switch 12 is connected to the first contact 12a, the voltage V1 is intermittently applied to both ends of the erroneous lighting prevention resistor 40 from the intermittent power supply adding means 32, and the winker switch 12 is connected to the second contact 12b. In this case, the voltage V1 is intermittently applied to both ends of the erroneous lighting prevention resistor 42 from the intermittent power supply adding means 32.

  The hazard switch 14 is a switch for turning on and off the lighting of the hazard (simultaneous lighting of the left turn signal and the right turn signal). When the hazard switch is desired to be turned on, the hazard switch 14 is connected to the third contact 14a (the hazard switch 14 is turned on). ). The third contact 14a is grounded via the erroneous lighting prevention resistors 40 and 42, respectively. When the hazard switch 14 is turned on, the voltage V1 is intermittently applied from the intermittent power supply adding means 32 to both ends of the erroneous lighting preventing resistors 40 and 42. The voltages VL and VR generated at both ends of the erroneous lighting preventing resistors 40 and 42 are input to the control unit 34 via the signal lines 46 and 48.

  Since the voltage V1 is intermittently applied to the turn signal switch 12 from the intermittent power supply means 32, the turn signal switch 12 is off (when not connected to either the first contact 12a or the second contact 12b). In addition, when a leak current occurs due to moisture adhering to the winker switch 12 (leak resistance value Rm is 1 kΩ, for example), the voltage V2 from the winker switch 12 (V2 = Rref × V1 / (Rm + Rref)). Is intermittently applied to both ends of the erroneous lighting preventing resistors 40 and 42. That is, a voltage that alternately changes between the voltage V0 and the voltage V2 is applied to the erroneous lighting prevention resistors 40 and 42.

  In addition, since the voltage V1 is intermittently applied to the hazard switch 14 from the intermittent power supply means 32, when the hazard switch 14 is off, a leakage current is generated due to moisture adhering to the hazard switch 14 or the like. In the case of (leakage resistance value Rm is 1 kΩ, for example), the voltage V2 (V2 = Rref × V1 / (Rm + Rref)) is intermittently applied to both ends of the erroneous lighting preventing resistors 40 and 42 from the hazard switch 14. That is, a voltage that alternately changes between the voltage V0 and the voltage V2 is applied to the erroneous lighting prevention resistors 40 and 42. If the resistance value Rref is, for example, 100Ω, the voltage V2 is (100/1100) V1≈0.09V1, which is smaller than the voltage V1.

  The control unit 34 determines the switch states of the blinker switch 12 and the hazard switch 14 based on the voltages VL and VR at both ends of the erroneous lighting prevention resistors 40 and 42 input via the signal lines 46 and 48. Specifically, when the voltage V1 is applied to the turn signal switch 12 and the voltage VL at both ends of the erroneous lighting prevention resistor 40 is equal to or higher than the threshold value Vt (V2 <Vt <V1), the control unit 34 turns the turn signal switch. 12 is connected to the first contact 12a (the left turn signal switch is turned on), and the voltage VR across the erroneous lighting prevention resistor 42 is equal to or higher than the threshold value Vt, the turn signal switch 12 is connected to the second contact 12b. (The right turn signal switch is on). In addition, when the voltage V1 is applied to the hazard switch 14 and the voltages VL and VR at both ends of the erroneous lighting prevention resistors 40 and 42 are both equal to or higher than the threshold value Vt, the control unit 34 turns on the hazard switch 14. Judge that it was done.

  On the other hand, when the voltage V1 is applied to the turn signal switch 12 and the hazard switch 14 and the voltages VL and VR at both ends of the erroneous lighting prevention resistors 40 and 42 are both lower than the threshold value Vt, the control unit 34 controls the left turn signal. It is determined that the right turn signal switch is off (the turn signal switch 12 is not connected to either the first contact 12a or the second contact 12b) and the hazard switch 14 is turned off. As a result, even if a leakage current occurs in the turn signal switch 12 and the hazard switch 14, it is not determined that the turn signal switch 12 is connected to the first contact 12a or the second contact 12b. It is not judged that it was turned on.

  Here, since the intermittent power supply means 32 reduces the voltage V1 applied to the winker switch 12 and the hazard switch 14, the noise component increases and the S / N ratio decreases, so noise (lighting of the horn, etc.) It is conceivable that the voltages VL and VR at both ends of the erroneous lighting preventing resistors 40 and 42 become equal to or higher than the threshold value Vt due to the influence of noise generated around the control device 10. Even in such a case, the voltage applied to the winker switch 12 and the hazard switch 14 by the intermittent power supply means 32 has a specific pattern waveform, so that the winker switch 12 is connected to the first contact 12a or the first contact due to the influence of noise. It can be determined that it is determined that the two contacts 12b are connected or that the hazard switch 14 is turned on.

  Briefly, the control unit 34 only applies when the pattern waveform of the voltage applied to the blinker switch 12 by the intermittent power supply means 32 and the pattern waveform of the voltage VL generated at both ends of the erroneous lighting prevention resistor 40 match. , It is determined that the turn signal switch 12 is connected to the first contact 12a. Only when the pattern waveform of the voltage applied to the blinker switch 12 by the intermittent power supply means 32 and the pattern waveform of the voltage VR generated at both ends of the erroneous lighting prevention resistor 42 are matched with each other by the control unit 34. It is determined that the second contact 12b is connected. Further, the control unit 34 poses a hazard only when the pattern waveform of the voltage applied to the winker switch 12 by the intermittent power supply means 32 and the voltages VL and VR generated at both ends of the erroneous lighting preventing resistors 40 and 42 are identical. It is determined that the switch 14 is turned on.

  The drive unit 36L turns on the front left LED 20L, the rear left LED 22L, and the indicator LED 24L. When the control unit 34 determines that the turn signal switch 12 is connected to the first contact 12a, the drive unit 36L controls the drive unit 36L. The front left LED 20L, the rear left LED 22L, and the indicator LED 24L are turned on. The drive unit 36R turns on the front right LED 20R, the rear right LED 22R, and the indicator LED 24R. When the control unit 34 determines that the turn signal switch 12 is connected to the second contact 12b, the front right LED 20R and the rear right LED 22R. And the indicator LED 24R is turned on. Further, when determining that the hazard switch 14 is turned on, the control unit 34 turns on the front left LED 20L, the rear left LED 22L, the front right LED 20R, the rear right LED 22R, the indicator LED 24L, and the indicator LED 24R.

  Next, operation | movement of the lighting control apparatus 10 is demonstrated according to the flowchart of FIG.4 and FIG.5. FIG. 4 is a flowchart showing the lighting operation of the left turn signal, and FIG. 5 is a flowchart showing the lighting operation of the right turn signal. First, the lighting operation of the left turn signal will be described.

  The control unit 34 determines whether or not the read timing has come (step S1 in FIG. 4). This reading timing is a timing synchronized with the timing when the intermittent power supply means 32 intermittently applies the voltage V1 to the winker switch 12 and the hazard switch 14.

  If it is determined in step S1 that the read timing has not arrived, the control unit 34 stays in step S1 until it arrives. If it is determined that the read timing has arrived, the control unit 34 determines the voltage VL corresponding to the left turn signal (an erroneous lighting prevention resistor). The voltage VL at both ends of 40 is read (step S2).

  Next, the control unit 34 determines whether or not the voltage VL read in step S2 is equal to or higher than the threshold value Vt (step S3). When the control unit 34 determines that the voltage VL is equal to or higher than the threshold value Vt, the control unit 34 C1 is incremented (step S4).

  When the winker switch 12 is connected to the first contact 12a by the driver's operation of the winker switch 12, or when the hazard switch 14 is turned on, the voltage VL becomes the voltage V1, so the voltage VL is the threshold value. Vt or higher. In addition, when the blinker switch 12 is not connected to the first contact 12a or when the hazard switch 14 is off and the leakage current is generated, the voltage VL becomes the voltage V2, so that the voltage VL is equal to or less than the threshold value Vt. However, the voltage VL may be equal to or higher than the threshold value Vt due to the influence of noise.

  Next, the control unit 34 determines whether or not the count value C1 is greater than or equal to a certain value (step S5). The reason why it is determined whether or not the count value C1 is equal to or greater than a certain value is that the voltage VL may be determined to be greater than or equal to the threshold value Vt due to the influence of noise, and therefore, erroneous lighting due to the influence of noise is prevented in step S5. For this reason, it is determined whether or not the voltage VL read in step S2 for a predetermined number of times is equal to or higher than the threshold value Vt. In other words, it is determined whether or not the pattern waveform of the voltage applied by the intermittent power supply means 32 and the pattern waveform of the voltage generated at both ends of the erroneous lighting prevention resistor 40 match within a certain time range. Yes.

  Since the waveform of the pulse voltage intermittently applied to the winker switch 12 and the hazard switch 14 is a unique pattern waveform, the voltage V1 is applied even when the voltage VL is determined to be greater than or equal to the threshold value Vt due to the influence of noise. The voltage VL that is read out at a timing that is not continuously exceeded the threshold value Vt a predetermined number of times. Further, the frequency of the applied pulse voltage is even higher because it is higher than the frequency by human operation and lower than the sounding frequency of the horn provided in the saddle type vehicle.

  If it is determined in step S5 that the count value C1 is not greater than or equal to a certain value, the process returns to step S1, and if it is determined that the count value C1 is greater than or equal to a certain value, the control unit 34 controls the drive unit 36L to blink the left blinker. Start (step S6) and return to step S1. That is, the front left LED 20L and the rear left LED 22L start blinking. At this time, the blinking of the indicator LED 24L is also started. If the left blinker is already blinking, the operation of step S6 is not performed, and the process directly returns to step S1.

  On the other hand, if it is determined in step S3 that the voltage VL is not greater than or equal to the threshold value Vt before the count value C1 exceeds a certain value, the count value C1 is cleared (0) (step S7), and the left turn signal is turned off. (Step S8), the process returns to step S1. At this time, the indicator LED 24L is also turned off. If the left turn signal is already extinguished, the operation in step S8 is not performed.

  As described above, the voltage VL corresponding to the left turn signal is read at the read timing synchronized with the timing at which the intermittent power supply adding means 32 intermittently applies the voltage V1 to the turn signal switch 12 and the hazard switch 14, If it is determined that the voltage VL is equal to or higher than the threshold value Vt, the left turn signal blinks, so that even if a leak current occurs, the left turn signal is not erroneously turned on (incorrect blink) due to the influence of noise or leak current. Can do.

  Next, the lighting operation of the right turn signal will be described. The control unit 34 determines whether or not the read timing has arrived (step S11 in FIG. 5). As described above, the read timing is synchronized with the timing at which the intermittent power supply means 32 intermittently applies the voltage V1 to the winker switch 12 and the hazard switch 14.

  If it is determined in step S11 that the read timing has not arrived, the control unit 34 remains in step S11 until it arrives. If it is determined that the read timing has arrived, the control unit 34 determines the voltage VR corresponding to the right turn signal (resistance to prevent erroneous lighting). 42) (voltage VR at both ends of 42) is read (step S12).

  Next, the control unit 34 determines whether or not the voltage VR read in step S12 is greater than or equal to the threshold value Vt (step S13). If the control unit 34 determines that the voltage VR is greater than or equal to the threshold value Vt, the control unit 34 counts the count value. C2 is incremented (step S14).

  When the winker switch 12 is connected to the second contact 12b by the driver's operation of the winker switch 12, or when the hazard switch 14 is turned on, the voltage VR becomes the voltage V1, so the voltage VR is the threshold value. Vt or higher. In addition, when the blinker switch 12 is not connected to the second contact 12b or when the hazard switch 14 is off and the leakage current is generated, the voltage VR becomes the voltage V2, so that the voltage VR is equal to or less than the threshold value Vt. However, the voltage VR may be equal to or higher than the threshold value Vt due to the influence of noise.

  Next, the control unit 34 determines whether or not the count value C2 is greater than or equal to a certain value (step S15). The reason why it is determined whether or not the count value C2 is equal to or greater than a certain value is that the voltage VR may be determined to be greater than or equal to the threshold value Vt due to the influence of noise, and therefore, erroneous lighting due to the influence of noise is prevented in step S15. For this reason, it is determined whether or not the voltage VR read in step S12 for a predetermined number of times is equal to or higher than the threshold value Vt. In other words, it is determined whether or not the pattern waveform of the voltage applied by the intermittent power supply means 32 and the pattern waveform of the voltage generated at both ends of the erroneous lighting prevention resistor 42 match within a certain time range. Yes.

  Since the waveform of the pulse voltage intermittently applied to the winker switch 12 and the hazard switch 14 is a unique pattern waveform, the voltage V1 is applied even when the voltage VR is determined to be greater than or equal to the threshold value Vt due to the influence of noise. The voltage VR that is read out at the timing that is read does not continuously exceed the threshold value Vt a predetermined number of times. Further, the frequency of the applied pulse voltage is even higher because it is higher than the frequency by human operation and lower than the sounding frequency of the horn provided in the saddle type vehicle.

  If it is determined in step S15 that the count value C2 is not equal to or greater than the predetermined value, the process returns to step S11. If it is determined that the count value C2 is equal to or greater than the predetermined value, the control unit 34 controls the drive unit 36R to blink the right blinker. Start (step S16) and return to step S11. That is, the front right LED 20R and the rear right LED 22R start blinking. At this time, the blinking of the indicator LED 24R is also started. If the blinker is already blinking, the operation returns to step S11 as it is without performing the operation of step S16.

  On the other hand, if it is determined in step S13 that the voltage VR is not greater than or equal to the threshold value Vt before the count value C2 becomes equal to or greater than a certain value, the count value C2 is cleared (0) (step S17), and the right blinker is turned off. (Step S18), the process returns to step S11. At this time, the indicator LED 24R is also turned off. If the right turn signal is already extinguished, the operation in step S18 is not performed.

  As described above, the voltage VR corresponding to the right winker is read at a read timing synchronized with the timing at which the intermittent power supply means 32 intermittently applies the voltage V1 to the winker switch 12 and the hazard switch 14, and the predetermined number of times is continuously received. If it is determined that the voltage VR is equal to or higher than the threshold value Vt, the right turn signal blinks, so that even if a leak current is generated, the right turn signal is not erroneously turned on (incorrect blink) due to the influence of noise or leakage current. Can do.

  When the turn signal switch 12 is connected to the first contact 12a by the driver's operation of the turn signal switch 12, the left turn signal blinks in the operation shown in FIG. 4, and the turn signal switch 12 is connected to the second contact 12b. The right turn signal blinks by the operation shown in FIG. Further, when the hazard switch 14 is turned on by the driver's operation, the left turn signal and the right turn signal blink simultaneously in the operation shown in FIGS. 4 and 5.

  As described above, according to the lighting control device 10 of the present embodiment, the intermittent power supply adding means 32 generates a voltage having a specific pattern waveform for identifying the presence or absence of a leakage current, and the blinker switch 12 and the hazard switch. 14, the generation of leakage current can be suppressed by reducing the voltage V <b> 1 applied intermittently. The lighting device 16 is erroneously turned on due to the influence of the leakage current, and the lighting device 16 is erroneously turned on due to the influence of noise. Can be prevented.

  The intermittent power supply adding means 32 generates a pulse voltage with a modulated frequency and / or generates a plurality of pulse voltages having different duty ratios, so that the S / N can be reduced by reducing the voltage applied intermittently. Even if the ratio is lowered, the lighting device 16 can be prevented from being erroneously turned on.

  The intermittent power supply means 32 generates a pulse voltage having a frequency higher than the frequency by human operation and lower than the blowing frequency of the horn provided in the saddle riding type vehicle. The frequency of human operation and the sounding frequency of the horn do not overlap with each other, and the accuracy of preventing the lamp 16 from being turned on is improved.

  Since the voltage applied to the turn signal switch 12 and the hazard switch 14 is a voltage of 0 to 2 volts, the occurrence of a leakage current can be suppressed.

  As mentioned above, although this invention was demonstrated using suitable embodiment, the technical scope of this invention is not limited to the range of description of the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above embodiment. It is apparent from the description of the scope of claims that embodiments with such changes or improvements can be included in the technical scope of the present invention. In addition, the reference numerals in parentheses described in the claims are appended to the reference numerals in the accompanying drawings for easy understanding of the present invention. It should not be construed as limited.

DESCRIPTION OF SYMBOLS 10 ... Lighting control apparatus 12 ... Winker switch 12a ... 1st contact 12b ... 2nd contact 14 ... Hazard switch 14a ... 3rd contact 16 ... Lighting device 18 ... Control apparatus 30 ... Voltage | voltage reduction means 32 ... Intermittent power supply addition means 34 ... Control part 36L, 36R ... Drive unit 38 ... Battery 40, 42 ... Resistor for erroneous lighting prevention

Claims (4)

Switch means (12, 14) for lighting the lamp (16);
Intermittent power supply adding means (32) for applying a constant voltage intermittently to the switch means (12, 14);
Control means (34) for determining whether or not the switch means (12, 14) has been operated based on the output voltage output from the switch means (12, 14);
In a lighting control device (10) in a saddle riding type vehicle comprising:
The intermittent power supply means (32) generates a voltage having a pattern waveform composed of a plurality of predetermined different duty ratios and applies the voltage to the switch means (12, 14). A lighting control device (10) in a vehicle. Switch means (12, 14) for lighting the lamp (16);
Intermittent power supply adding means (32) for applying a constant voltage intermittently to the switch means (12, 14);
Control means (34) for determining whether or not the switch means (12, 14) has been operated based on the output voltage output from the switch means (12, 14);
In a lighting control device (10) in a saddle riding type vehicle comprising:
The intermittent power supply means (32) generates a voltage having a pattern waveform composed of a plurality of predetermined different frequency modulations and applies the voltage to the switch means (12, 14). A lighting control device (10) in a vehicle. In the lighting control device (10) in the saddle riding type vehicle according to claim 1 or 2,
The intermittent power supply means (32) generates a pulse voltage having a frequency that is higher than a frequency generated by human operation of the switch means and lower than a blowing frequency of a horn provided in the saddle riding type vehicle. A lighting control device (10) in a saddle riding type vehicle. In the lighting control device (10) in the saddle riding type vehicle according to any one of claims 1 to 3,
The voltage applied to the switch means (12, 14) is a voltage of 0 to 2 volts.

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