JPH0526694B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is an automatic light extinguishing device with a delay timer, in particular, an automatic light extinguishing device with a delay timer, which turns on a tail lamp or head lamp for a predetermined period of time when the door of an automobile is left unlocked. This invention relates to an automatic light extinguishing device with a delay tamper.

[Prior Art] After turning off the ignition switch, the driver often leaves the vehicle with its head lamps and tail lamps turned on.
If a car is left with such a lamp on, a so-called "depleted battery" will occur, making it impossible to drive the car next time. Therefore, in order to prevent such lamps from being left on, automatic light-off devices are being provided.

This automatic light extinguishing device automatically turns off the tail lamps and head lamps by turning the ignition switch off (turning it off) and then opening and closing the driver's door. .

[Problems to be solved by the invention] However, in the conventional automatic light-off device, after the ignition switch is turned off and the engine is stopped, the driver's door (the door closest to the driver's seat) is simply turned off. The lamp is simply turned off automatically almost instantaneously in response to the open/close state.

Therefore, for example, when parking in a locked parking lot, the interior of the garage is dark at night, and if the car's lamps are turned off, the vehicle must grope its way to the entrance to the parking lot. Therefore, even if there is something under their feet, they often do not notice it, which is extremely dangerous.

On the other hand, if you leave your car without locking the doors, modern cars do not have any means to warn you that the doors are unlocked, so if you forget to lock the doors, the items inside the car may be lost. There is a high risk that your vehicle will be stolen or your vehicle itself will be stolen.

Therefore, it is an object of the present invention to have a function to warn the unlocked state of the door, and also to provide a delay timer that can illuminate the surrounding area for a certain period of time in places where a door lock is unnecessary, such as a locked parking lot. An object of the present invention is to provide an automatic light-off device.

[Means for Solving the Problems] The automatic light extinguishing device with a delay timer according to the present invention turns off the door of the automobile when the ignition switch is turned off and the door closest to the driver's seat is changed from open to closed. When at least one of the doors is unlocked, the lit lamp is turned off after a predetermined period of time, and when all the doors are locked, the light is turned off almost instantly when the door is closed. It was designed to do so.

[Operation] When at least one of the doors is in the unlocked state, the lamp is lit for a predetermined period of time, so that the driver can notice the unlocked state of the door by lighting the lamp.

Additionally, in places where locking the door is unnecessary, such as in a locked parking lot, the door is often left unlocked, and in this case, the lamp is on for a predetermined period of time, making the surrounding area bright. Drivers and others can move safely.

Furthermore, since the lamp automatically turns off after at least a certain period of time, it is possible to prevent the battery from running out due to forgetting to turn off the lamp.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a schematic configuration of an automatic lights-off device with a delay timer, which is an embodiment of the present invention.

In FIG. 1, an automatic light extinguishing device with a delay timer includes a control device 1 and a lamp drive circuit 2. As shown in FIG.

The control device 1 determines whether or not to automatically turn off the lights based on the given signal, and when automatic lights are turned off, determines whether to delay the lights by a predetermined period of time and determines whether or not to automatically turn off the lights. Logic unit 11 outputs a signal according to
A timer 12 is activated upon receiving a signal to automatically turn off the light after a certain period of time delay from 1, counts time, and generates a signal indicating that a predetermined time has elapsed, and generates a clock signal for the timer 12. oscillator 13. The following four signals are applied to the logic unit 11.
A signal from the ignition switch SW1 via the input terminal T1 indicating whether the ignition switch is in the on state (hereinafter referred to as an ignition switch signal), a signal from the driver's seat provided via the input terminal T2. A signal indicating the opening/closing state of the driver's door by the door switch SW2 (hereinafter referred to as the driver's door switch signal), a signal indicating whether all the doors are locked or not by the door lock switch SW3 applied via the input terminal T3 (hereinafter referred to as the driver's door switch signal). , a door lock switch signal), and a signal indicating whether or not the tail lamp L2 is turned on by the tail lamp switch SW4 applied via the input terminal T4 (hereinafter referred to as a tail lamp switch signal).

The lamp drive circuit 2 is a transistor switch.
Including Tr1 and Tr2. transistor switch Tr
1 and Tr2 both have logic unit 1 at their base.
Receives a signal from 1. transistor switch
One conduction terminal of Tr1 is connected to input terminal T4,
And the other terminal is connected via the output terminal T5 to a relay switch R1 for lighting the tail lamp L2.
connected to the relay coil. One conductive terminal of the transistor switch Tr2 is connected via an output terminal T7 to one terminal of a headlamp switch SW5 for turning on and off the headlamp. The other terminal of the headlamp switch SW5 is grounded. The other terminal of the transistor switch Tr2 is connected via an output terminal T6 to a relay coil portion of a relay switch R2 for lighting the headlamp L1. One terminal of relay switches R1 and R2 is connected to power supply +B. Normally, when the head lamp L1 is lit, the tail lamp L2 is also lit.

2A to 2C are signal waveform diagrams showing the operation of the device shown in FIG.
The figure shows the operation when the light is automatically turned off delayed by a timer, and FIG. 2C shows the operation when the light is automatically turned off when the door is locked from the outside. Hereinafter, the operation of the automatic lights-off device with a delay timer according to the present invention will be explained with reference to FIG. 1 and FIGS. 2A to 2C.

First, with reference to FIG. 1 and FIG. 2A, the operation when automatically turning off the lights when all the doors are locked will be described.

By turning off the ignition switch SW1, the ignition switch signal changes from the on state to the off state and is applied to the logic unit 11 via the input terminal T1. Next, the driver's door is opened and the driver's door switch SW2 is connected to the input terminal T.
2, a signal indicating that the driver's door is open (the door switch is on) is applied to the logic unit 11. Next, a signal indicating that all doors are locked is sent to the input terminal T3 by the door lock switch SW3.
is applied to logic unit 11 via. Next, when the driver's door is closed again, the logic unit 11 determines that all the doors are locked and the driver has exited the vehicle, and deactivates the lamp drive circuit 2. L1,
Turn off the tail lamp L2. The above is the operation when the lights are automatically turned off by the door lock.

Next, with reference to FIG. 1 and FIG. 2B, a description will be given of delayed automatic light-off when the timer is activated.

First, a signal indicating that the ignition switch has been turned off and the engine has stopped (off state signal)
is from ignition switch SW1 to input terminal T
1 to the logic unit 11. Next, when a signal indicating that the driver's door has changed from the open state (door switch SW2 is on) to the closed state again is given to the logic unit 11, the logic unit 11 determines that the driver has exited the vehicle. do. At this time, since the door is not locked, the off-state door lock switch signal is sent to the logic unit 11 from the door lock switch SW3.
is applied to the logic unit 11 via the input terminal T3. Logic unit 11 starts timer 12 upon receiving a signal indicating that the driver has exited the vehicle and that at least one door is unlocked.
Start. Timer 12 counts the number of pulses of the clock signal provided by oscillator 13 and provides a signal to logic unit 11 indicating that a predetermined time has elapsed. The logic unit 11 is
Predetermined time (T seconds) from timer 12
In response to a signal indicating that the elapsed time has elapsed, the lamp drive circuit 2 which is in the active state is made inactive. As a result, the lit lamps L1 and L2 are automatically turned off after T seconds have elapsed since the driver got off the vehicle. The above is the operation when automatically turning off the light using a timer.

Next, referring to FIG. 1 and FIG. 2C, the operation when the light is automatically turned off when the door is locked from the outside will be described. First, when the ignition switch signal changes from an on state to an off state, the logic unit 11 identifies that the engine has stopped. In this state, when the door switch signal changes from the off state to the on state and then returns to the off state, the logic unit 11 determines that the driver has exited the vehicle.
Next, when the driver locks the door from the outside, the door lock switch signal turns on, and the logic unit 11 determines that the door is locked, disables the lamp drive circuit 2, and turns on the lamps L1 and L2. Turn off the light.

FIG. 3 is a flow diagram showing the operation of the automatic lights-off device with delay timer shown in FIG. 1. Hereinafter, with reference to FIGS. 1 and 3, FIGS. 2A and 2B.
The operations described individually in the figures and FIG. 2C will be described as a series of continuous operations.

First, the logic unit 11 receives a signal from the tail switch SW4 applied via the input terminal T4, and determines whether the tail lamp L2 is lit (S1). At this time, if the head lamp L1 is normally lit, the tail lamp L2 is also lit. If the tail lamp is not lit, it returns to the initial state. Next, the tail lamp is on (tail switch SW4
(on state), the logic unit 11 determines whether the ignition switch signal applied via the input terminal T1 has changed from the on state to the off state. If the ignition switch remains on, the initial state is returned. If the ignition switch changes from the on state to the off state, the logic unit 11 determines that the engine has stopped and the operation of the automobile has ended. Next, it is determined whether or not the driver's door has changed from the open state to the open state again based on a signal from the driver's door switch SW2 provided via the input terminal T2 (S3). If the driver's door remains open or closed, the logic unit 11 determines whether the ignition switch SW1 is on (S4). If the ignition switch remains on, it returns to the initial state. If the ignition switch is off, turn the tail switch SW in this state.
The logic unit 11 determines whether or not 4 is in the on state (S5). If the tail switch SW4 is in the off state, it returns to the initial state. If the tail switch SW4 is in the on state, then it is determined whether all the doors are locked or not based on the door lock switch signal applied via the input terminal T3 (S6). If at least one door is unlocked, logic unit 11 starts timer 12 (S7). Timer 12 measures time by counting the number of pulses of the clock signal from oscillator 13 in response to the activation signal from logic unit 11 (S8). Next, the logic unit 11 receives the signal from the timer 12 and determines whether a predetermined time has elapsed (S9), and if the predetermined time has elapsed, the lamp drive circuit 2 is activated. By disabling it, the lamps L1 and L2 are turned off (S11). If the predetermined time has not yet elapsed, the logic unit 11 determines whether all the doors are locked (S10), and if all the doors are locked, the lamp drive circuit 2 is activated. By disabling it, the lamps L1 and L2 are turned off (S11). At step 10, if all the doors are not yet locked, the process returns to step 8 and the timer 12 continues counting. With the above operation, when the driver gets out of the vehicle with the door unlocked while at least one of the lamps L1 and L2 is on,
The lamps remain on for a predetermined period of time, and once all doors are locked, lamps L1 and L2 can be turned off automatically.

[Effects of the Invention] As described above, in this invention, when at least one of the tail lamp or the head lamp is on, all doors are closed when the driver turns off the ignition key and gets out of the vehicle. When the door is locked, the lights that are on are automatically turned off, and if at least one door is unlocked, the lights are kept on for a certain period of time, so if the driver forgets to lock the door and leaves the car. If the vehicle is stolen, the driver will be able to notice it by turning on the lamp, and will not forget to lock the door, thereby preventing the risk of items inside the vehicle being stolen or the vehicle itself being stolen.

Furthermore, in cases where there is no need to lock the door, such as in a garage with a lock, the lamp remains lit for a certain period of time, so the surroundings are bright and the user can move safely.

Furthermore, since it has an automatic lamp extinguishing function, it is possible to prevent "battery build-up" caused by forgetting to turn off the lamp.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of the configuration of an automatic lights-off device with a delay timer, which is an embodiment of the present invention.
Figures 2A to 2C are signal waveform diagrams showing the operation of the device shown in Figure 1. Figure 2A shows the signal waveform when the light is automatically turned off by the door lock, and Figure 2B shows the signal waveform when the light is turned off automatically by the door lock. FIG. 2C is a diagram showing the operating waveforms when the lights are automatically turned off when the door is locked from the outside. FIG. 3 is a flow diagram showing the operation of the apparatus shown in FIG. In the figure, 1 is a control device, 2 is a lamp drive circuit, 11 is a logic unit, 12 is a timer, 13
is an oscillator, Tr1 and Tr2 are transistor switches, R1 and R2 are relay switches, L1 and L2 are lamps, SW1 is an ignition switch, and SW
2 is the driver's door switch, SW3 is the door lock switch, SW4 is the tail switch, and SW5 is the head switch. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1. In an automatic headlamp and taillamp extinguishing device for a motor vehicle, when either or both of the headlamp and taillamp are on, the ignition switch is in the OFF state and the driver's door is changed from the open state to the closed state. When at least one of the doors of the automobile is unlocked when the vehicle is switched, the head lamp and the tail lamp that are turned on are turned off after a delay of a preset time. An automatic light-off device with a delay timer, which is characterized by: