JP6443830B1 - Lamp device for vehicle - Google Patents

Abstract

Even when an LED light source is used for a lamp mounted on a vehicle, the present invention improves the appearance when the plurality of lamps blink by matching the timing when the plurality of lamps are turned on. It is an object.
A vehicle lamp device that displays a right turn and a left turn of a vehicle, a plurality of lamps that flash and emit light, a turn lever device that starts or ends blinking of the plurality of lamps, and a plurality of lamps A plurality of power supply units that are connected to each other and blink each lamp, and an ECU that receives a start signal from the turn lever device and transmits a series of turn-on and turn-off signals to the power supply unit, The power supply unit is provided with a map that stores the lighting pattern of each corresponding lamp, turns on the corresponding lamp using the lighting pattern, and terminates lighting by the lighting pattern when receiving a turn-off signal from the ECU. It is a feature.
[Selection] Figure 5

Description

  The present invention relates to a vehicular lamp device, and more particularly to a vehicular lamp device for displaying a course direction of a vehicle toward the outside of the vehicle.

  A plurality of turn signal lamps are provided outside the vehicle body (for example, forward, sideward, and rearward of the vehicle body) in order to notify a driver or a pedestrian of another vehicle of a right turn and a left turn of the vehicle. When each turn signal lamp is turned on, the blinker repeats blinking at a predetermined cycle, but the blinking timing may not match each other.

  A blinking control device mounted on a vehicle described in Patent Document 1 includes a lamp control device that controls blinking for each blinker lamp in order to forcibly match the blinking timings of the plurality of blinker lamps. A synchronization control device that synchronizes the operation of the control device is provided. Specifically, the blinking control device matches the timing when the plurality of turn signal lamps are turned on by transmitting a synchronization signal from the synchronization control device to the plurality of lamp control devices. As a result, the blinking timings of the blinker lamps coincide with each other.

JP-A-11-115627

  However, in the blink control device of Patent Document 1, when an LED light source is used for the blinker lamp, there is a problem that a blinking timing of the blinker lamp is shifted. Specifically, the LED light source is turned on when the voltage is boosted to a predetermined target voltage defined by the number and type of lamps. Therefore, if the number of LED light sources and the device such as the lamp control device are different for each turn signal lamp, Since the time is different, the lighting timing will also be different. In particular, since the blinker lamp provided in front of the vehicle body has a larger number of LED light sources than the others, it takes time to increase the voltage to the target voltage and the lighting tends to be delayed. As described above, when the lighting timing is different for each blinker lamp, there is a problem that the blinking period is shifted and the appearance is poor.

  Therefore, even when the LED light source is used for a lamp mounted on a vehicle, the present invention improves the appearance when the plurality of lamps blink by matching the timing when the plurality of lamps are turned on. It is aimed.

  In order to solve the above-described problem, a vehicle lamp device that displays a right turn and a left turn of a vehicle, a plurality of lamps that flash and emit light, and a direction indication switch that starts or ends blinking of the plurality of lamps, A plurality of power supply units connected to each of the plurality of lamps, and a vehicle control unit for receiving a start signal from the direction indicating switch and transmitting a turn-on signal and a turn-off signal to the power supply unit at a predetermined cycle The plurality of power supply units each have a map storing the lighting patterns of the corresponding lamps, turn on the corresponding lamps using the lighting patterns, and receive a turn-off signal from the vehicle control unit. Then, the lighting according to the lighting pattern is terminated.

  In the present invention configured as described above, the power supply unit turns on using the lighting pattern of the map when receiving the lighting signal from the vehicle control unit, and turns off the lighting based on the lighting pattern of the map when receiving the turn-off signal. Therefore, the turn-off timings of the plurality of lamps can be matched. Therefore, it is possible to improve the appearance when a plurality of lamps blink.

  In the present invention, it is preferable that the plurality of lamps start to emit light at different voltages. In the present invention configured as described above, even when the plurality of lamps start to emit light at different voltages, the turn-off timings of the plurality of lamps can be matched.

  In the present invention, preferably, the light sources of the plurality of lamps are LED light sources. In the present invention configured as described above, even when the light sources of the plurality of lamps are LED light sources, the turn-off timings of the plurality of lamps can be matched.

  In the present invention, it is preferable that the plurality of power supply units control the start of lighting by the lighting pattern based on each delay time from when each power supply unit receives the lighting signal to when each corresponding lamp is turned on. To do. In the present invention configured as described above, the lighting start timings of the plurality of lamps can be reliably matched.

  In the present invention, it is preferable that the plurality of power supply units perform lighting based on the lighting pattern based on each standby time that is a difference between the maximum delay time among the delay times and the delay time in each power supply unit. Control the start. In the present invention configured as described above, the lighting timings of the plurality of lamps can be reliably matched.

  In this invention, Preferably, a vehicle control part delays the timing which transmits a light extinction signal to a several power supply part by the largest waiting time among each waiting time. In the present invention configured as described above, since the turn-off signal is received from the vehicle control unit at or after the turn-on of the respective lamps according to the turn-on pattern of the map, the turn-on of the respective lamps according to the turn-on pattern is terminated halfway. There is nothing.

  Even when an LED light source is used for a lamp mounted on a vehicle, the present invention can improve the appearance when the plurality of lamps blink by matching the timing when the plurality of lamps are turned on.

It is a block diagram which shows the lamp device for vehicles by embodiment of this invention. It is a schematic circuit diagram which shows a power supply part provided with the pressure | voltage rise circuit mounted in the lamp device for vehicles by embodiment of this invention. It is a schematic circuit diagram which shows the power supply part which is not provided with the voltage booster circuit by embodiment of this invention. It is the schematic of the map with which each power supply part of the lamp device for vehicles by an embodiment of the present invention is provided. It is a flowchart which shows operation | movement of the vehicle lamp device by embodiment of this invention. It is a time chart which shows blinking operation | movement of each lamp | ramp of the vehicle lamp device by embodiment of this invention.

  Hereinafter, a vehicle lamp device according to an embodiment of the present invention will be described with reference to the accompanying drawings.

  First, a basic configuration of a vehicle lamp device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a block diagram illustrating a vehicular lamp device according to an embodiment of the present invention. FIG. 2 is a schematic circuit diagram illustrating a power supply unit including a booster circuit mounted on the vehicle lamp device according to the embodiment of the present invention, and FIG. 3 illustrates a power supply not including the booster circuit according to the embodiment of the present invention. It is a schematic circuit diagram which shows a supply part.

  The vehicle is provided with lamps (winker lamps) that notify left and right turns on both the left and right sides of the vehicle body. The lamp informs the driver, pedestrian, etc. of the oncoming vehicle, the parallel running vehicle, and the following vehicle by blinking that the vehicle turns left and right. For this reason, the lamps are provided at a plurality of locations on the front, side, and rear of the vehicle body so that they can be confirmed from all directions around the vehicle.

  As shown in FIG. 1, the lamp includes a plurality of lamps including a front lamp 10, a side lamp 11, a rear lamp 12, and an interior lamp 13. The front lamp 10 is provided on the front side of the vehicle body, the side lamp 11 is provided on the side or side mirror of the vehicle body, the rear lamp 12 is provided on the rear side of the vehicle body, and the vehicle interior lamp 13 is provided on the instrument panel in the vehicle.

  Each of the lamps 10 to 13 uses the same type of LED light source (light emitting diode) with a different number of lamps. The number of lights of the front lamp 10, the side lamp 11, the rear lamp 12, and the interior lamp 13 is 10, 1, 5, 1 (light). In the front lamp 10 and the rear lamp 12, these LED light sources are connected in series.

  The LED light source emits light with a predetermined amount of light when a voltage equal to or higher than a target voltage (a forward voltage of about 3.3 V per lamp) is applied, but does not emit light with a voltage lower than the target voltage. The target voltages of the front lamp 10, the side lamp 11, the rear lamp 12, and the in-vehicle lamp 13 are defined by the number and types of LED light sources. In this embodiment, the target voltages are about 33, about 3.3, about 16.5, about 3 .3 (V). That is, in order to turn on the LED light sources of the lamps 10 to 13, it is necessary to increase the voltage to each target voltage. Since each lamp 10 to 13 has a different time for boosting to each target voltage, the time until each lamp is actually turned on is different even when a lighting command is received. The time required for this boosting is the delay time Δt. In addition, the kind and number of lamps of the LED light source of this invention are not limited to what was mentioned above, It can change suitably.

  A turn lever device 3 (direction indicating switch) for turning on or off the lamps 10 to 13 is provided in the vehicle. The turn lever device 3 includes a turn lever (not shown) provided in the vicinity of the steering wheel in front of the vehicle, and a detection unit (not shown) that detects the driver's turn lever operation. The turn lever device 3 transmits a blinking start or end signal of each of the lamps 10 to 13 to the ECU 5 via the receiver 4 in accordance with the operation of the driver. When the driver operates the turn lever in the left turn direction, the turn lever device 3 blinks the lamps 10 to 13 provided on the left side of the vehicle body. Further, the turn lever device 3 blinks the lamps 10 to 13 provided on the right side of the vehicle body when the driver operates the turn lever in the right turn direction. The direction indicating switch is not limited to the turn type switch as in the present embodiment, and a push button type switch may be used.

  The power supply unit (ESU) includes a front power supply unit 15 connected to the front lamp 10, a side power supply unit 16 connected to the side lamp 11, a rear power supply unit 17 connected to the rear lamp 12, An in-vehicle power supply unit 18 connected to the in-vehicle lamp 13 is provided.

  Each of the power supply units 15 to 18 functions as a unit that applies a predetermined applied voltage (≧ target voltage) to each lamp so that the lamps 10 to 13 are lit at a predetermined timing and a predetermined light amount. Each power supply part 15-18 is provided with each map which has memorize | stored the lighting pattern regarding the lighting rate after each lamp | ramp 10-13 is lighted and it extinguishes. When the power supply units 15 to 18 receive the lighting signal from the ECU 5, the power supply units 15 to 18 supply power to the lamps 10 to 13 based on the lighting pattern of each map. When the power supply units 15 to 18 receive the turn-off signal from the ECU 5, the power supply units 15 to 18 stop supplying power to the lamps 10 to 13 and turn off the lights. Moreover, each power supply part 15-18 adjusts the light quantity of a LED light source by carrying out PWM control of the voltage applied to each lamp | ramp.

  Moreover, each power supply part 15-18 functions also as a unit which monitors the lighting condition in which the LED light source of each lamp 10-13 is lighting. Specifically, the time (delay time) from when the lighting signal from the ECU 5 is received until the LED light sources of the lamps 10 to 13 actually start lighting is detected, and the delay time is sent to the ECU 5 for each detection. Send.

  The front power supply unit 15 and the rear power supply unit 17 will be described with reference to FIG. The front power supply unit 15 and the rear power supply unit 17 each have a DC-DC converter 20 that boosts the voltage input from the voltage input terminal 22, and applies a predetermined applied voltage by turning on (conducting) / off (non-conducting). A switching element 24 to be supplied to the lamp, a DC-DC converter 20 and a microcomputer 26 (μC) connected to the switching element 24 for lighting each lamp are provided. Further, the front lamp 10 and the rear lamp 12 include a series circuit in which a plurality of LED light sources are connected in series. This series circuit has one end connected to the switching element 24 and the other end connected to the ground 28 so that a forward voltage is applied to the LED light source.

  The DC-DC converter 20 is connected to a battery power source (not shown), and the battery voltage (about 12 V) input from the voltage input terminal 22 according to a command from the microcomputer 26 is used as a target voltage for each of the lamps 10 to 13. (The front lamp 10 is about 33V, and the rear lamp 12 is about 16.5V).

  The switching element 24 is connected to each of the lamps 10 and 12 and energizes the LED light source when turned on, and interrupts the energization of the LED light source when turned off. Further, the switching element 24 controls the light amount of the LED light source by repeatedly turning on and off by PWM control in accordance with a command from the microcomputer 26 during the energization period. That is, in the PWM control, the duty ratio is changed by extending or shortening the time width during which the power is turned on, thereby adjusting the substantial supply power.

  The microcomputer 26 includes a map, and controls the DC-DC converter 20 and the switching element 24 based on the lighting pattern of the map. Specifically, when the microcomputer 26 receives the lighting signal from the ECU 5, the DC-DC converter 20 boosts the battery voltage to a predetermined applied voltage (≧ target voltage). Further, the microcomputer 26 controls the switching element 24 based on the map to light the LED light source with a predetermined lighting pattern.

  The microcomputer 26 measures the current flowing through the lamps 10 and 12 by a current detection element (not shown). At the timing when the voltage boosted by the DC-DC converter 20 reaches the target voltage (forward voltage: about 3.3 V × number of lamps), current starts to flow through the lamps 10 and 12 (that is, starts to light). Therefore, the microcomputer 26 can detect the time when the current starts to flow through the lamps 10 and 12 as the lighting start time of the LED light source. That is, the delay time is from when the lighting signal is received to when the lighting starts. Then, the microcomputer 26 turns on the LED light source with a lighting pattern based on the map, starting from the lighting start time. Accordingly, when the lighting start time is delayed by the delay time, the lighting pattern is also delayed by the delay time.

  The side power supply unit 16 and the in-vehicle power supply unit 18 will be described with reference to FIG. The side power supply unit 16 and the in-vehicle power supply unit 18 are the same as the front power supply unit 15 and the rear power supply unit 17 described above except that they do not include a DC-DC converter. When the microcomputer 26 receives the lighting signal from the ECU 5, the microcomputer 26 applies the battery voltage (about 12 V) to the side lamp 11 or the in-vehicle lamp 13 without increasing the voltage. Further, the microcomputer 26 controls the switching element 24 based on the map to light the LED light source with a predetermined lighting pattern. In the side lamp 11 or the in-vehicle lamp 13, a limiting resistor (not shown) is provided in the circuit so that an excessive current does not flow.

  The ECU 5 (Electronic Control Unit, vehicle control unit) includes an input interface circuit for inputting signals from each device, an output interface circuit for outputting a request signal to each device, and a CPU for processing the input signals. , A memory and a program (not shown) for operating them. The ECU 5 is communicably connected to the turn lever device 3 and the power supply units 15 to 18. When the ECU 5 receives a blinking start signal from the turn lever device 3, the ECU 5 receives a series of ON / OFF pulse signals with a predetermined cycle stored in advance. It transmits to the power supply parts 15-18. When the ECU 5 receives the blinking end signal from the turn lever device 3, the ECU 5 ends the transmission of a series of lighting / extinguishing pulse signals.

  In addition, when the ECU 5 receives the actual measurement data of the delay times of the lamps 10 to 13 from the power supply units 15 to 18, the ECU 5 corrects a series of lighting / extinguishing pulse signals with a predetermined cycle. The pulse width (time length) of the lighting signal is the same as the time length of the lighting pattern of the map, but the ECU 5 performs correction for delaying the pulse width of the lighting signal by a predetermined time.

  FIG. 4 is a schematic diagram of a map included in each power supply unit of the vehicle lamp device according to the embodiment of the present invention. Details of the map will be described.

  As shown in FIG. 4, the map is a lighting pattern having stages of (a) starting lighting, (b) continuing lighting, and (c) turning off, and for each stage, the lighting rate (the maximum light amount that is the performance of the lamp). The ratio of the amount of light that is currently emitted) is stored in advance. Each power supply part 15-18 is provided with each map according to each lamp 10-13, and controls the lighting state of each lamp 10-13 using each map. The lighting rate waveform of each map which is a lighting pattern is the same waveform between the maps, and the time length of the lighting pattern of each map is also set to the same length.

  In the lighting start stage (a) of the map, the power supply unit is controlled so as to quickly start up with the lamp lighting rate from 0% to 100%. In FIG. 4, the lighting rate rises substantially vertically although it has a slight inclination with respect to the vertical axis due to physical factors such as equipment. At this stage, the microcomputer 26 of the power supply unit turns on the switching element 24 and starts applying a predetermined applied voltage to the LED light source.

  In the lighting continuation stage (b), the power supply unit is controlled so that the lamp lighting rate is constant at 100%. At this stage, the microcomputer 26 of the power supply unit continuously turns on the switching element 24 and continuously applies a predetermined applied voltage to the LED light source.

  In the extinguishing stage (c), the power supply unit is controlled so that the lighting rate of the lamp gradually decreases from 100% to 0%. At this stage, the microcomputer 26 of the power supply unit shortens the ON time width (duty ratio) of the switching element 24 by PWM control, and gradually reduces the power supplied to the LED light source. After the extinguishing step (c), the microcomputer 26 keeps the switching element 24 off.

  The operation of the vehicular lamp device according to the embodiment of the present invention will be described with reference to FIG. FIG. 5 is a flowchart showing the operation of the vehicular lamp device according to the embodiment of the present invention. In FIG. 5, S indicates each step.

  As shown in FIG. 5, when the driver operates the turn lever to detect that the detection unit of the turn lever device 3 is on, the ECU 5 receives a blinking start signal of the lamps 10 to 13 from the detection unit (S1). ; Yes). While the detection unit detects OFF, the ECU 5 continues to receive a blinking end signal of the lamps 10 to 13 (S1; No).

  In S <b> 2, when the ECU 5 receives the blinking start signal, the ECU 5 transmits the first lighting signal (first lighting signal) in the series of lighting / extinguishing pulse signals to the power supply units 15 to 18. Specifically, the ECU 5 simultaneously gives signals to the power supply units 15 to 18 at predetermined time intervals until the detection unit of the turn lever device 3 detects the off state. Keep sending. In the present embodiment, the lighting signal of the ECU 5 is an ON period or a rising edge of the pulse signal. However, the present invention is not limited to this, and the lighting signal may be a single signal (for example, a short pulse signal).

  In S3, when each power supply unit 15-18 receives the first lighting signal from the ECU 5, it passes a delay time Δt1 to Δt4 required for boosting, and then applies a predetermined applied voltage to each lamp 10-13. start. That is, the power supply units 15 to 18 start supplying power to the LED light sources of the lamps 10 to 13 by controlling the switching element 24 based on the maps.

  When the front power supply unit 15 receives the lighting signal, the DC-DC converter 20 in response to a command from the microcomputer 26 applies a battery voltage (about 12 V) to a predetermined applied voltage (about 12 V) in order to emit 10 LED light sources. Start boosting to about 33V). After the delay time Δt1 has elapsed, the front power supply unit 15 applies a predetermined applied voltage to the front lamp 10.

  When the rear power supply unit 17 receives the lighting signal, the DC-DC converter 20 generates a battery voltage (about 12 V) to a predetermined applied voltage (≧ 12) in order to cause the five LED light sources to emit light according to a command from the microcomputer 26. Start boosting to about 16.5V). After the delay time Δt3 has elapsed, the rear power supply unit 17 applies a predetermined applied voltage to the rear lamp 12.

  When receiving the lighting signal, the side power supply unit 16 and the in-vehicle power supply unit 18 turn on the switching element 24 according to a command from the microcomputer 26 without delay time (Δt2, Δt4 = 0), and the side lamp 11 Then, a predetermined applied voltage is started to be applied to the in-vehicle lamp 13. Note that the current supplied to the side lamp 11 or the in-vehicle lamp 13 is limited by a limiting resistor (not shown) so that an excessive current is not supplied.

  In S4, the lamps 10 to 13 start lighting with the lighting pattern of each map after the delay times Δt1 to Δt4 have elapsed. The front lamp 10 starts to light after the delay time Δt1 has elapsed. The rear lamp 12 starts lighting after the delay time Δt3 has elapsed. The side lamp 11 and the in-vehicle lamp 13 start lighting without a delay time (Δt2, Δt4 = 0). Since each of the lamps 10 to 13 controls the switching element 24 based on each map starting from each lighting start time, each of the lamps 10 to 13 except for each of the delay times Δt1 to Δt4. The light is lit according to the same waveform of the lighting rate stored in each map.

  In S5, each power supply part 15-18 detects each delay time (DELTA) t1- (DELTA) t4 after receiving the lighting signal of ECU5 until the LED light source of each lamp 10-13 actually starts lighting. When the power supply units 15 to 18 detect the delay times Δt1 to Δt4, the power supply units 15 to 18 transmit actual measurement data of the delay times to the ECU 5.

  In S6, when the ECU 5 receives the actually measured data of the delay times Δt1 to Δt4, the ECU 5 determines the maximum value Δtmax among the delay times Δt1 to Δt4. For example, since the delay time Δt1 of the front lamp 10 is boosted to a high applied voltage by the front power supply unit 15, the delay time Δt1 becomes the maximum value (= about 30 msec). On the other hand, the delay times Δt2 and Δt4 of the side lamp 11 and the in-vehicle lamp 13 are not boosted by the power supply units 16 and 18, so that the delay times Δt2 and Δt4 become the minimum values (= 0 msec).

  Next, the ECU 5 subtracts the delay times Δt1 to Δt4 from the maximum delay time value Δtmax to calculate a standby time for matching the lighting start times of the lamps 10 to 13 ((ΔT1 to ΔT4) = Δtmax. -(Δt1 to Δt4); ΔT1, ΔT2, ΔT3, ΔT4: waiting time of front lamp, side lamp, rear lamp, in-car lamp; Δt1, Δt2, Δt3, Δt4: delay time of front lamp, side lamp, rear lamp, in-car lamp Δtmax: the maximum value of each delay time).

  In S <b> 7, the ECU 5 transmits the first turn-off signal (first turn-off signal) in the series of turn-on / light-off pulse signals to the power supply units 15 to 18. In this embodiment, the turn-off signal is an off period or a falling edge of a series of pulse signals. However, the present invention is not limited to this, and the light on / off signal may be a single signal (for example, a short pulse signal).

  In S <b> 8, when the power supply units 15 to 18 receive the first turn-off signal from the ECU 5, the lighting of the lamps 10 to 13 according to the maps ends. That is, even when the lamps 10 to 13 are in the lighting operation according to the lighting pattern of the map, the lighting of all the lamps 10 to 13 is ended by the first turn-off signal from the ECU 5. Thereby, the extinction timing of each lamp 10-13 can be made to correspond.

  In S9, the ECU 5 supplies the data of the next lighting signal (second lighting signal) in the series of lighting / extinguishing cycle pulses and the standby times ΔT1 to ΔT4 of the lamps 10 to 13 calculated in S6 to each power supply unit. Send to 15-18.

  In S10, when the power supply units 15 to 18 receive the second lighting signal from the ECU 5, after the standby times ΔT1 to ΔT4 of the lamps 10 to 13 have elapsed, a predetermined applied voltage is applied to the lamps 10 to 13, respectively. Begin to apply.

  Specifically, when the front power supply unit 15 receives the second lighting signal, the front power supply unit 15 starts boosting to a predetermined applied voltage without waiting time (ΔT1 = 0), and after the delay time Δt1 has elapsed, Start applying a predetermined applied voltage. When the rear power supply unit 17 receives the second lighting signal, the rear power supply unit 17 starts applying a predetermined applied voltage to the rear lamp 12 after the standby time (ΔT3 = Δt1−Δt3) and the delay time Δt3 have elapsed. The side power supply unit 16 and the in-vehicle power supply unit 18 apply a predetermined application to the side lamp 11 and the in-vehicle lamp 13 after the standby time (ΔT2, ΔT4 = Δt1) has elapsed after receiving the second lighting signal. Start applying voltage. Thereby, the lighting start timing of each lamp 10-13 can be made to correspond.

  In S11, the ECU 5 corrects a series of ON / OFF pulse signals of a predetermined cycle stored in advance. Specifically, in the pulse signal, the ECU 5 delays the transmission timing of the next extinction signal (second extinction signal) by the maximum value ΔTmax (ΔT2, ΔT4 = Δt1) of each standby time (the pulse width of the lighting signal ( (Time length) is extended by the maximum waiting time ΔTmax).

  Next, the ECU 5 transmits a second turn-off signal to each of the power supply units 15 to 18 after the maximum standby time ΔTmax has elapsed based on the corrected pulse signal. Each of the power supply units 15 to 18 receives the second turn-off signal when the lighting by the lighting pattern of each map is finished. Thereby, lighting of each lamp 10-13 by the lighting pattern of each map is not terminated on the way. Thereafter, the ECU 5 continues to transmit the corrected pulse signal to each of the power supply units 15-18.

  In S12, when the driver operates the turn lever to detect that the detection unit of the turn lever device 3 is off (S23; Yes), the ECU 5 sends an end signal for turning off the lamps 10 to 13 from the detection unit. The lamps 10-13 are forcibly turned off. Until the detection unit detects OFF (S23; No), steps S9 to S11 are repeated. The operation flow of the vehicle lamp device is thus completed.

  Next, the operation of the vehicular lamp device according to the present embodiment of the present invention will be described with reference to FIG. FIG. 6 is a time chart showing the blinking operation of each lamp of the vehicle lamp device.

  When the driver operates the turn lever at t1, the turn lever device 3 transmits a blinking start signal to the ECU 5. When the ECU 5 receives the blinking start signal, the ECU 5 transmits a blinking / extinguishing pulse signal stored in advance to each of the power supply units 15 to 18. Since the side power supply unit 16 and the in-vehicle power supply unit 18 do not boost the voltage, the side lamp 11 and the in-vehicle lamp 13 start to light at the timing almost simultaneously with the reception of the first lighting signal (t1). On the other hand, since the front power supply unit 15 and the rear power supply unit 17 take time to boost, the front lamp 10 and the rear lamp 12 are lit at a timing delayed by delay times Δt1 and Δt3 from the reception of the first lighting signal. Start (t2, t3).

  At t4, the ECU 5 transmits a first turn-off signal to each power supply unit 15-18. When the power supply units 15 to 18 receive the turn-off signal, the power supply units 15 to 18 turn off the switching element 24 (non-conduction) and turn off the lamps 10 to 13 simultaneously. The side power supply unit 16 and the in-vehicle power supply unit 18 receive the first turn-off signal when the lighting by the lighting pattern of the map is finished. The front power supply unit 15 and the rear power supply unit 17 receive the first turn-off signal during the turn-on operation with the map turn-on pattern, and end the turn-on with the turn-on pattern of the front lamp 10 and the rear lamp 12. Thereby, the extinction timing of each lamp 10-13 can be made to correspond.

  At t5, the ECU 5 transmits the second lighting signal and the standby time data to each of the power supply units 15-18. The front lamp 10 is turned on with a delay time Δt1 after receiving the lighting signal from the ECU 5 (t6). The rear lamp 12 is turned on with a delay of the waiting time ΔT3 and the delay time Δt3 after receiving the lighting signal of the ECU 5 (t6). The side lamp 11 and the in-vehicle lamp 13 are turned on with a delay of waiting time ΔT2, ΔT4 after receiving the lighting signal of the ECU 5 (t6). Thereby, each lamp 10-13 starts to light simultaneously at t6.

  At t7, the ECU 5 transmits the second turn-off signal delayed by the maximum delay time ΔTmax (ΔT2, ΔT4 = Δt1). Each of the power supply units 15 to 18 receives the turn-off signal when the lighting of the lamps 10 to 13 is completed according to the lighting pattern of the map. Thereby, lighting of each lamp 10-13 by the lighting pattern of a map is not terminated on the way. In the present embodiment, the ECU 5 transmits the turn-off signal when the second turn-off signal is turned on according to the turn-on pattern in the map. However, the present invention is not limited to this, and the turn-on pattern is turned on. Any time may be used later.

  When the driver turns off the turn lever at t8, the turn lever device 3 transmits a blinking end signal to the ECU 5. When the ECU 5 receives the blinking end signal, the ECU 5 transmits a turn-off signal to each of the power supply units 15 to 18 to end the blinking of the lamps 10 to 13.

Next, the (action) effect of this embodiment will be described.
In the vehicle lamp control device 1 of the present embodiment, each of the power supply units 15 to 18 includes a map that stores the lighting pattern of each of the corresponding lamps 10 to 13. The power supply units 15 to 18 turn on the corresponding lamps 10 to 13 using the lighting pattern of each map, and when the turn-off signal is received from the ECU 5, the lamps 10 to 13 are turned on by the lighting pattern of each map. Terminate.

  In this embodiment, each of the power supply units 15 to 18 is turned on using the lighting pattern of the map when receiving the lighting signal from the ECU 5, and is turned off according to the lighting pattern of each map when receiving the lighting signal. Therefore, the turn-off timings of the lamps 10 to 13 can be matched. Therefore, it is possible to improve the appearance when the lamps 10 to 13 blink.

  In the present embodiment, the lamps 10 to 13 start to emit light at different voltages. The light sources of the lamps 10 to 13 are LED light sources. Each of the lamps 10 to 13 provided with an LED light source emits light instantaneously when a voltage is applied, as compared with a bulb lamp (a lamp that emits light when an energized filament emits a predetermined amount). For this reason, if the time to increase the voltage to the predetermined applied voltage of each of the lamps 10 to 13 is different, the lighting timing is likely to be shifted. In the present embodiment configured as described above, the lighting timings of the lamps 10 to 13 can be matched even when the lamps 10 to 13 that emit light at different voltages are used.

  In the present embodiment, the power supply units 15 to 18 turn on the maps based on the delay times Δt1 to Δt4 from when the lighting signals from the ECU 5 are received until the lamps 10 to 13 are actually turned on. Controls the start of lighting by pattern. Specifically, each of the power supply units 15 to 18 detects the delay times Δt1 to Δt4 and matches the lighting timing of the front lamp 10 with the longest delay time to the side lamp 11, the rear lamp 12, and the in-vehicle lamp 13. The lighting timing is controlled to be delayed by the difference between the delay times. In the present embodiment configured as described above, the lighting timings of the lamps 10 to 13 can be surely matched.

  In the present embodiment, each of the power supply units 15 to 18 includes the maximum delay time Δtmax among the delay times Δt1 to Δt4 and the delay time Δt1 of each of the power supply units 15 to 18. The start of lighting by the lighting pattern is controlled based on each waiting time ΔT1 to ΔT4 that is a difference from .about.Δt4. Specifically, the power supply units 15 to 18 control the lighting timings of the lamps 10 to 13 to be delayed by the standby times ΔT1 to ΔT4. In the present embodiment configured as described above, the lighting timings of the lamps 10 to 13 can be surely matched.

  In the present embodiment, the ECU 5 determines the timing for supplying the turn-off signal to each of the power supply units 15 to 18 with respect to a series of pre-stored turn-on / turn-off pulse signals. Just delay. In the present embodiment configured as described above, the turn-off signal can be received from the ECU 5 at or after the turn-on of the lamps 10 to 13 according to the turn-on pattern of the map. The lighting of 10 to 13 does not end in the middle.

  Without being limited to the above-described embodiment of the present invention, various changes and modifications can be made within the scope of the technical idea described in the claims.

1 Vehicle lamp device 3 Turn lever device (direction indicator switch)
5 ECU (vehicle control unit)
DESCRIPTION OF SYMBOLS 10 Front lamp 11 Side lamp 12 Rear lamp 13 Car lamp 15 Front power supply part 16 Side power supply part 17 Rear power supply part 18 Car power supply part ΔT Standby time Δt Delay time

Claims (6)

A vehicle lamp device for displaying a right turn and a left turn of a vehicle,
Multiple lamps that flash and emit light,
A direction indicating switch for starting or ending blinking of the plurality of lamps;
A plurality of power supply units connected to each of the plurality of lamps to blink each lamp;
A vehicle control unit that receives a start signal from the direction indicator switch and transmits a lighting signal and a light-off signal to the power supply unit at a predetermined period;
The plurality of power supply units are each provided with a map storing a lighting pattern of each corresponding lamp, and when the corresponding lamp is turned on using the lighting pattern and a turn-off signal is received from the vehicle control unit, the lighting is performed. A lamp device for a vehicle that ends lighting by a pattern.   The vehicle lamp device according to claim 1, wherein the plurality of lamps start to emit light at different voltages.   The vehicle lamp device according to claim 2, wherein the light sources of the plurality of lamps are LED light sources.   The plurality of power supply units controls the start of lighting by the lighting pattern based on each delay time from when each power supply unit receives the lighting signal to when each corresponding lamp is turned on. 4. The vehicular lamp device according to 3.   The plurality of power supply units controls the start of lighting by the lighting pattern based on each standby time that is the difference between the maximum delay time among the delay times and the delay time in each power supply unit. 5. The vehicle lamp device according to 4.   The vehicle lamp device according to claim 5, wherein the vehicle control unit delays a timing at which the turn-off signal is transmitted to the plurality of power supply units by a maximum standby time among the standby times.

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