JPS60174340A - Ignition switch illuminating circuit - Google Patents

Abstract

PURPOSE:To illuminate a starting switch when a driver gets off the vehicle, by constructing the captioned circuit such that a starting switch lamp is lit when a small lamp switch is opened while a door opening signal or a starting switch ON signal being inputted, and it is put off after a lapse of a given period or after the starting switch is opened. CONSTITUTION:A control unit 13 is adapted to be supplied with a door opening signal 15 from a door sensor 14, an ON signal 9 from a small lamp switch 3 and an ON signal 17 from an ignition switch 8. When the control unit 13 is supplied with the door opening signal 15 or when input of the ON signal 9 is stopped by opening the small lamp switch 3 while the ON signal 17 being inputted with the ignition switch 8 closed, the control unit 13 starts to supply power to a foot light 11 and an ignition switch lamp 12. About 5sec after the unit 13 started to supply power or when the input of the ON signal 17 is stopped by opening the ignition switch 8, the control unit 13 stops the power supply. In such a manner, the ignition switch can be illuminated when a driver gets off the vehicle.

Description

[Detailed Description of the Invention] The present invention relates to an ignition switch lighting circuit, and is useful when used in conjunction with a forget-to-turn-off alarm circuit. Recent automobiles have built-in ignition switch lighting circuits and forget-to-turn-off alarm circuits. There is. The ignition switch lighting circuit is a circuit that lights up the ignition switch when the door is opened, making it easier to enter the car and insert the key into the ignition switch when it is dark, such as at night. In addition, the forget-to-turn-off warning device is a circuit that issues an alarm if the ignition switch is turned OFF while small lamps such as vehicle side lamps are on, and prevents passengers from exiting the vehicle with headlamps and small lamps still on.

A conventional technique incorporating this type of circuit will be explained with reference to FIG. In the figure, l is a forget-to-turn-off alarm circuit, which includes a relay 2, a small lamp switch 3, a side lamp (small lamp) 4. It is composed of an alarm drive device 5 and an alarm sound generator 6.

Also, 7 is the battery, 8 is the ignition switch, 16
is a meter panel light that illuminates the meter panel. Then, the small lamp switch 3 is turned on, and the relay 2 is energized and turned ON.
6 lights up. When the side marker lights 4 are on, a closing signal 9 indicating that the small lamp switch is turned on is input to the warning drive device 5. When the ignition switch 8 is turned off in this state, the alarm drive device 5 passes current to the alarm sound generator 6', and an alarm is issued. Tamashi, I forgot to turn off the small lamp switch 3 and turned off the width light 3.
When the driver turns the ignition switch 8't OFF while trying to get out of the vehicle, an alarm is issued, and the driver knows that he has forgotten to turn off the side lights 4.

Furthermore, in FIG. 1, IO is an ignition switch lighting circuit, which is composed of a footlight 11, an ignition switch light 12, a control device 13, and a door sensor 14. The ignition switch light 12 is installed near the ignition switch 8 to illuminate it, or is built into the ignition switch 8 itself to display and display the location of the ignition switch 8.

Further, the footlight 11 illuminates the footwell of the driver's seat. Furthermore, the door sensor 14 detects the opening of the door and sends out a door open signal 15, and for example, a courtesy switch that is closed when the door opens is employed. Therefore, when the door open signal 15 is input, the control device 13 makes the foot lamp 11 and the ignition switch lamp 12 conductive for a certain period of time, and
Both are lit for a certain period of time. Therefore, even when it is dark, such as at night, the ignition switch 8 is illuminated, making it easier to insert the key, and the area under the driver's feet is illuminated.

In the conventional circuit described above, when parking the vehicle at night and getting out of the vehicle, the driver first opens the small lamp switch 3 to turn off the width lights 4 and meter panel lights 16, and then closes the ignition switch 8. Open and turn off
position. The reason for doing this is that if the ignition switch 8 is opened first, an alarm will be issued.

By the way, in the conventional technology, the small lamp switch 3
Since the meter panel light 16 goes out at the same time as the switch is turned off, the interior of the car is completely dark at night, and the driver has to grope around to find the ignition switch °≦CH8, turn it off, and pull out the key. It is always inconvenient. The ignition switch light 12 is of no use when exiting the vehicle. Of course, after opening the small lamp 3, once the driver's side door is opened, the door open signal 15 will be sent and the ignition switch light 12 will be activated.
However, such an operation is extremely unnatural and poses a safety problem. Additionally, the possibility of locking the key inside the vehicle increases.

SUMMARY OF THE INVENTION In view of the above-mentioned prior art, it is an object of the present invention to provide an ignition switch lighting circuit in which the ignition switch light is turned on even when a vehicle exits the vehicle. The configuration of the present invention that achieves this object includes an ignition switch light that illuminates the ignition switch, and a door opening fk detection system.
．． and a door sensor that sends out a door open signal, and a small lamp switch that is turned on to supply power to the small lamp when the door open signal is input or the ignition switch is turned on. A control device that starts energizing the ignition switch light and stops energizing the ignition switch light on the condition that a certain period of time has elapsed after the start of energization or the ignition switch that had been turned on is released. It is characterized by becoming.

Embodiments of the present invention will be described in detail below based on the drawings. Note that parts that are the same as those in the prior art are given the same numbers and redundant explanations will be omitted.

FIG. 2 shows an embodiment of the invention. As shown in the figure, in this embodiment, the control device 13 receives a door open signal 15. from the door sensor 14. Closing signal 9 indicating closing of small lunge switch 30 and closing of ignition switch 8 (IG)
When the e-indication input signal 'A I 7 is input, the door open signal 15 is input, or the ignition switch 8 is turned on and the input signal 17 is input. Small lamp switch 3 when input
energization of the foot lamp 11 and the ignition switch lamp 12 is started on the condition that the switch is opened and the input signal 9 is no longer input.

Further, the control device 13 stops the energization on the condition that a certain period of time t (about 5 seconds) has elapsed at the energization start edge, or the ignition switch 8 is opened and the input signal 17 is no longer input.

Therefore, in this embodiment, the following operation is performed.

(a) When getting into the vehicle, when the door is opened, the door open signal 15 is input to the control device 13, and the foot lamp 11 and ignition switch lamp 12 are turned on. The light will turn off after a certain period of time after the door is closed. This operation is the same as the prior art.

(b) When parking, as shown in Figure 3 (a),
First, since the small lamp switch 3 is opened, the input signal 9 is no longer input to the control device 13, so the foot lamp 11 and the ignition switch lamp 12 are turned on. After that, the ignition switch 8 is opened and the O
When it becomes FF, the input signal 17 is no longer input to the control device 13, so the foot lamp 11 and the ignition switch lamp 12 are turned off. Note that when the driver opens the door and attempts to exit the vehicle after pulling out the key, the foot lamp 11 and the ignition switch lamp 12 are turned on for a certain period of time in the same way as in (a) above.

(c) If the small lamp switch 3 that was turned on is released while the vehicle is continuing to drive 1. For example, if you enter a tunnel in the daytime and turn on the width lights 4, etc., then exit the tunnel and release the small lamp switch 3. When the vehicle side lights, 4, etc. are turned off, the small lamp switch 3 is opened and the input signal 9 is no longer input, as shown in FIG. 3(b), so the foot lamps 11 and ignition switch lights 1
2 lights up. Since such lighting is unnecessary, the light is turned off after a certain period of time t has elapsed.

As specifically explained above in conjunction with the embodiments, according to the present invention, the ignition switch can be illuminated even when getting off the vehicle.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing the prior art, FIG. 2 is a circuit diagram showing an embodiment of the present invention, and FIGS. 3(a) and 3(b) are operation explanatory diagrams showing the operation of the present embodiment. Inside, l is the forget-to-turn-off circuit, 3 is the small lamp switch, 4 is the side light, 7 is the battery, 8 is the ignition switch, and 9 is the input number 48. 10 is an ignition switch lighting circuit; 12i, l:
'I ignition switch light, 13 is a control device, 14 is a door sensor, 15 is a door open signal, 16 is a meter panel light, and 17 is a closing signal. Patent applicant: Sumitomo Electric Industries, Ltd. Patent attorney: Shibu Mitsuishi (and 1 other person)

Claims (1)

[Claims] An ignition switch light that illuminates the ignition switch, a door sensor that detects when the door is opened and sends out a door open signal, and a small lamp that supplies power when the door open signal is input or the ignition switch is turned on. On the condition that the small lamp switch that had been turned on is opened in order to said ignition switch on condition that it is opened.