JPH0474220B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a cornering lamp lighting device that controls turning on and off of a cornering lamp provided in a vehicle.

<Summary of the Invention> In the cornering lamp lighting device according to the present invention, when the flasher unit outputs a right turn signal lamp drive pulse signal, the right side integrating capacitor is charged with this signal so that the voltage between the terminals of this integrating capacitor reaches a predetermined value. During the above period, the right cornering lamp is turned on continuously, and when the flash unit outputs the left turn signal lamp driving pulse signal, the left integrating capacitor is charged with this signal and the terminals of this integrating capacitor are connected. When the right turn signal lamp drive pulse signal is output to a lamp drive circuit equipped with an off-delay circuit, that is, a circuit that lights the left corner lamp continuously while the voltage is at a predetermined value or more, A prohibition circuit is added to quickly discharge the left integrating capacitor, and to quickly discharge the right integrating capacitor when the left turn signal lamp drive pulse signal is output, and a turn signal switch for controlling the flasher unit is connected from the right. Even when switching instantaneously to the left or from left to right, both cornering lamps do not turn on at the same time, and only the cornering lamp to which the turn signal switch is switched is always turned on. be.

<Prior art and its problems> Some vehicles do not provide sufficient illumination in the turning direction with just the light distribution of the head lamps, so a cornering lamp is installed at the front or side of the vehicle, and this cornering lamp illuminates the turning direction. There are some that are designed to ensure the necessary brightness.

FIG. 3 is a block diagram showing an example of a conventional cornering lamp lighting device that controls turning on and off of the cornering lamp. As explained in detail in Japanese Unexamined Patent Publication No. 59-34947, the device shown in this figure activates the flasher unit 3 when the turn signal switch 2 is operated with the ignition switch 1 turned on. A pulse voltage is continuously output to light one of the right turn signal lamp 4 and the left turn signal lamp 5, and the pulse voltage is smoothed by a smoothing circuit 6 and converted into a cornering lamp lighting signal by a voltage discrimination circuit 7. If the headlamp switch 8 is turned on at this time, this cornering lamp lighting signal will turn on either the right cornering lamp 9 or the left cornering lamp 10, and the vehicle can be turned on simply by operating the turn signal switch 2. Automatically turns on the cornering lamp on the side in the turning direction. In other words, with this device, if the driver is aware in advance of the vehicle's lane change, right turn, left turn, start, stop, etc., and operates the turn signal switch 2 in the direction that requires safety confirmation, the cornering lamp in that direction will be activated. The light is on, allowing for smooth safety checks.

By the way, in such a conventional cornering lamp lighting device, the pulse voltage output from the flasher unit 3 is smoothed by the smoothing circuit 6, so that when the turn signal switch 2 is instantaneously switched from right to left or from left to right. , even though the left cornering lamp 10 is turned on when the cornering lamp before switching, that is, the turn signal switch 2 is switched from right to left due to the influence of the integrating capacitor (not shown) that constitutes the smoothing circuit 6. The right cornering lamp 9 goes out after a certain period of time, which may cause drivers of other vehicles to misjudge the direction in which the vehicle is turning.

<Object of the Invention> In view of the above-mentioned circumstances, the present invention has been developed to instantly turn on the left cornering lamp 10 when the turn signal switch 2 is switched from right to left, and simultaneously turn on the right cornering lamp 9. It is possible to issue a prohibition signal and turn off the prohibition signal instantly and completely, and when the turn signal switch 2 is switched from left to right, the right cornering lamp 9 is turned on instantly and the left cornering lamp 10 is simultaneously turned on. It is possible to issue a drive prohibition signal and turn off the light instantly and completely.This allows other people to be accurately informed of the direction in which the vehicle is turning, and does not require illumination. An object of the present invention is to provide a cornering lamp lighting device that can prevent illumination in certain directions.

<Configuration and Effects of the Invention> In order to achieve this object, the present invention provides a cornering lamp lighting device that controls lighting of a cornering lamp in a turn direction in response to operation of a turn signal switch, and a lamp that controls lighting of the cornering lamp. A drive circuit and a drive prohibition signal generation circuit for applying a drive prohibition signal to the lamp drive circuit of the other cornering lamp in response to application of a lighting signal to one of the cornering lamps are provided in correspondence with each cornering lamp. The gist of this document is that it has been established.

With this configuration, in the present invention, even when the turn signal switch is switched instantaneously, the lighting periods of both cornering lamps can be prevented from overlapping, and cornering in the direction in which the turn signal switch is turned down can be prevented. Only the lamp can be lit.

Embodiments of the Invention FIG. 1 is a block diagram showing an embodiment of a cornering lamp lighting device according to the present invention, and FIG. 2 is a diagram showing details of the cornering lamp drive circuit 19 shown in FIG. 1. The device shown in these figures can be activated by raising the turn signal switch 16 from the neutral position with the ignition switch 13, side lamp switch 20, and high beam switch 26 or low beam switch 27 all turned on (closed). , the right turn signal lamp 17 flashes and the right cornering lamp 28 lights up continuously, and when the turn signal switch 16 is lowered from the neutral position, the left turn signal lamp 18 flashes and the left cornering lamp 29 lights up continuously. lights up continuously, and the power supply 12 and ignition switch 13
, hazard switches _14-1 to _14-3 , flasher unit 15, and turn signal switch 1.
6, a right turn signal lamp 17, a left turn signal lamp 18, a cornering lamp drive circuit 19, a side lamp switch 20,
It includes a lighting switch 21, a high beam indicator 22, a headlamp 23, a high beam switch 26, a low beam switch 27, a right cornering lamp 28, and a left cornering lamp 29.

The power source 12 is a battery installed in the vehicle, and when the ignition switch 13 is turned on (closed) or the hazard switch _14-1 is turned on (its movable piece is connected to the normally open side), the power source 12 is a battery installed in the vehicle. The voltage of the power supply 12 is supplied to the flasher unit 15.

When the flasher unit 15 is supplied with voltage, the hazard switches _14-2 and _14-3 , which are interlocked with the hazard switch _14-1 , are turned on (closed).
In other words, when the hazard lever (not shown) is in the hazard position, or when the turn signal switch 16
is raised or lowered from the neutral position, and its movable piece 16 _-a becomes terminal 16 _-b and terminal 1.
6 _- c, it turns on and generates a turn signal lamp driving pulse signal, and when the hazard lever is in the hazard position, the turn signal lamp driving pulse signal activates the right turn signal lamp 17 and the left turn signal. The lamps 18 are made to flash together. Further, when the turn signal switch 16 is raised, the flasher unit 15 flashes the right turn signal lamp 17 using the turn signal lamp drive pulse signal, and when the turn signal switch 16 is lowered, the flasher unit 15 flashes the right turn signal lamp 17 using the turn signal lamp drive pulse signal. The left turn signal lamp 18 is blinked by the turn signal lamp driving pulse signal. When the right turn signal lamp 17 blinks, the right signal input terminal 1 of the cornering lamp drive circuit 19
The turn signal lamp drive pulse signal is supplied to 9 _-a , and when the left turn signal lamp 18 blinks, the turn signal lamp drive pulse signal is supplied to the left signal input terminal 19 _-b of the cornering lamp drive circuit 19. be done.

The headlamp 23 has an upper coil 24 and a low coil 25, and when the lighting switch 21 is turned on (closed), a low beam switch 27 or a high beam switch 26, which is provided coaxially with the lighting switch 21, is turned on. When turned on (closed), the low coil 25 or the upper coil 24 is turned on, and the high beam switch 26
When is on, the high beam indicator 22 lights up and the first ground terminal 19 _-e of the cornering lamp drive circuit 19 is grounded.
Further, when the low beam switch 28 is on, the second ground terminal 19 _-f of the cornering lamp drive circuit 19 is grounded.

Further, when the ignition switch 13 is turned on, the voltage of the power supply 12 is supplied to the first power supply terminal 19 _-c of the cornering lamp drive circuit 19. Further, when the side lamp switch 20 is turned on (closed), the voltage of the power source 12 is supplied to the second power terminal 19 _-d of the cornering lamp drive circuit 19.

Further, the cornering lamp drive circuit 19 includes:
When the voltage of the first power supply terminal 19 _-c is supplied and either the first or second ground terminal 19 _-e or 19 _-f is grounded, the right signal input terminal 19 turns on. _-a , determines the signal supplied to the left signal input terminal 19 _-b , and its second power supply terminal 19
_-d , one of the right cornering lamp 28 or the left cornering lamp 29 is turned on, or both of them are not turned on, depending on the above-mentioned determination result, and the transistors 30 to 35 and , left integrating capacitor 3
6, right-hand integrating capacitor 37, and diode 3
9 to 48, resistors 49 to 62, a capacitor 63 for voltage stabilization, relays 64 and 65, and normally open contacts 66 and 67 of these relays 64 and 65, respectively.

The transistors 30 to 32 constitute a left cornering lamp drive circuit, and each operates as described below.

First, the transistor 30 is turned on when the turn signal lamp driving pulse signal is supplied only to the left signal input terminal 19 _-b , and charges the left integrating capacitor 36 to smooth the turn signal lamp driving pulse signal. The transistors 31 and 32 are turned on by the signal obtained by the smoothing operation of the left integrating capacitor 36. As a result, the relay 64 is energized, the normally open contact 66 of this relay 64 is closed, and the second
The voltage supplied to the power supply terminal 19 _-d is output from the left output terminal 19 _-g , and the left cornering lamp 29 is turned on. Next, when the turn signal lamp driving pulse signal is no longer supplied to the left signal input terminal 19 _-b , the transistor 30 is immediately turned off.
1 and 32 are kept on for a predetermined period of time by the charge stored in the left-hand integrating capacitor 36, and a voltage continues to be output from the left-hand output terminal 19 _-g . However, when the turn signal lamp drive pulse signal is supplied to the right signal input terminal 19 _-a immediately after the turn signal lamp drive pulse signal is no longer supplied to the left signal input terminal 19 _-b , the transistor 30 is turned off. After that, the negative terminal voltage of the left integrating capacitor 36 is increased through the diode (inhibiting means) 40, so that the positive terminal of the left integrating capacitor 36 → the first power supply terminal 19 _-c of the cornering lamp drive circuit 19 → the hazard switch 14 _-1 → Flasher unit 15 → Turn signal switch 16 → Left signal input terminal 19 of cornering lamp drive circuit 19 _-a → Resistor 56 →
The integrating capacitor 36 is instantaneously discharged through the path from the diode 40 to the negative terminal of the left integrating capacitor 36, and the relay 64 is turned off. That is, in this case, the right integrating capacitor 36 is instantaneously discharged via the resistor 56 whose value is smaller than the value of the resistor 52, and the left cornering lamp 29 is instantaneously turned off.

Further, the transistors 33 to 35 constitute a right cornering lamp drive circuit, and similarly to the left cornering lamp drive circuit, when a turn signal lamp drive pulse signal is supplied only to the right signal input terminal 19 _-a , the right side cornering lamp drive circuit is configured. Charge the integral capacitor 37 and turn on the relay 65,
The voltage supplied to the second power supply terminal 19 _-d is outputted from the right output terminal 19 _-h , and the right cornering lamp 28 is turned on. Next, when the turn signal lamp drive pulse signal is no longer supplied to the right signal input terminal 19 _-a , the right integrating capacitor 37 gradually discharges and keeps the relay 65 on for a predetermined period of time, but the right signal input terminal 19 _- If _a turn signal lamp drive pulse signal is supplied to the left signal input terminal 19 _-b immediately after the turn signal lamp drive pulse signal is no longer supplied to a, this turn signal lamp drive pulse signal is transmitted through the diode 44. Right side integrating capacitor 37
Since the right integrating capacitor 37 is rapidly discharged, the relay 65 is immediately turned off. That is, when the left cornering lamp 27 is turned on, the right cornering lamp 28 is immediately turned off.

In addition, when the turn signal lamp drive pulse signal is supplied to both the right side signal input terminal 19 _-a and the left side signal input terminal 19 _-b , that is, when the hazard switches 14 _-1 to 14 _-3 are turned on, ,
The diode 3 is connected to the turn signal lamp drive pulse signal supplied to the right side signal input terminal 19 _-a .
9 is reverse biased, and the left signal input terminal 19
Since diode 43 is reverse biased by the turn signal lamp drive pulse signal supplied to _-b , transistors 30 and 33 are both turned off, and integrating capacitors 36 and 37 are not charged. Therefore, in this case, the right cornering lamp 2
8. Both left cornering lamps 29 do not light up.

Thus, in this embodiment, when the right turn signal lamp 17 flashes, the left integral capacitor 36 is instantly discharged, and when the left turn signal lamp 18 flashes, the right integral capacitor 36 is instantaneously discharged. Therefore, when the turn signal switch 16 is suddenly turned down from the up position, the right cornering lamp 28 can be instantly turned off and the left side cornering lamp 29 can be turned on at the same time.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a cornering lamp lighting device according to the present invention, FIG. 2 is a circuit diagram showing an example of the cornering lamp drive circuit 19 shown in FIG. 1, and FIG. 3 is a conventional cornering lamp drive circuit. FIG. 2 is a block diagram showing an example of the device. 15...Flash unit, 16...Turn signal switch, 28...Right cornering lamp, 29...Left cornering lamp, 30~
32...Left cornering lamp drive circuit (transistor), 33-35...Right cornering lamp drive circuit (transistor), 36...Left side integrating capacitor, 37...Right side integrating capacitor, 4
0, 44... Drive prohibition signal generation circuit (diode).

Claims (1)

[Claims] 1. A cornering lamp lighting device that controls lighting of a cornering lamp in a turn direction in response to operation of a turn signal switch, comprising: a lamp drive circuit including an off-delay circuit that controls lighting of the cornering lamp; and one of the cornering lamps. A cornering lamp characterized in that each cornering lamp is provided with a drive prohibition signal generation circuit that applies a drive prohibition signal to the lamp drive circuit of the other cornering lamp in response to application of a lighting signal to the cornering lamp. lighting device.