JPS6099733A - Light-off delay device for car - Google Patents

Abstract

PURPOSE:To aim at automation in a light-off delay, by turning on a light in discriminating the necessity of the light-off delay on the basis of output of each memory circuit, which stores the output of an ignition switch by means of each detection signal for opening or closing the door and then turning off the light after the elapse of a specified period of time. CONSTITUTION:When a door is opened and a door switch is turned on, a signal out of an input element switch 1 is stored in a memory circuit 3 but when the door is closed and the door switch 2 is turned off, the signal out of the input element switch 1 is stored in another memory circuit 4. And, at a discrimination circuit 5, delay action takes place only when an ignition switch is turned on in time of door opening and the ignition switch becomes turned on in time of door closing. Therefore, during the daytime, in order to switch on a light before the ignition switch is turned to OFF, the door is left unopened whereby the switch remains kept off intact so that the delay action is no longer carried out. In addition, the circuit 5 emits its output to a light driving circuit 6, turning on a room light 7, while a measuring circuit 8 resets these memory circuits 3 and 4 after the elapse of a specified period of time and then turns off the light 7.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a vehicle light turn-off delay device, and more specifically, a vehicle light turn-off delay device, more specifically, a vehicle light turn-off delay device that delays the turn-off of vehicle room lights or headlights by operating an ignition switch, etc. The present invention relates to a device for delaying the turning off of vehicle lights, which is controlled according to the conditions of the elements.

(Prior Art) When getting out of a vehicle in a garage or the like without night lighting, it is convenient if the room light or headlight is turned on for a certain period of time after the door is closed.

In Japanese Patent Application Laid-Open No. 54-110536 ``Time Lag Extinguishing Device for Automotive Room Lamps'', the room lamp is on while the door is open, and continues to be on for at least a certain period of time after the door is closed. A device configured as follows has been proposed. However, this device delays turning off the lights even during the day when the delay function is unnecessary, consuming wasted power. In this case, the light can be turned off using a manual switch, but it is cumbersome to switch the switch each time.

(Object of the Invention) An object of the present invention is to provide a vehicle light turn-off delay device that automatically controls the turn-off delay according to input conditions.

(Structure of the Invention) In order to achieve the above object, there is provided a vehicle light turn-off delay device according to the present invention, which delays the turn-off of the vehicle light when getting off the vehicle. A door switch that detects and outputs the closed state,
an input element switch that detects and outputs the operation of a vehicle operating section; a first memory circuit that stores an output of the input element switch based on a detection signal of a door open state of the door switch; and a door of the door switch. a second storage circuit that stores the output of the input element switch based on the closed state detection signal; and a delay command signal when it is determined that a light-off delay is necessary based on the outputs of the first and second storage circuits. a light drive circuit that is driven by the output of the discrimination circuit; a light that is turned on by the light drive circuit; and a light that is turned on by the light drive circuit; and a measuring circuit for erasing the contents stored in the first and second storage devices.

According to the above configuration, the object of the present invention can be completely achieved.

(Example) Hereinafter, the present invention will be described in more detail with reference to the drawings and the like.

FIG. 1 is a block diagram showing an embodiment of a vehicle light turn-off delay device according to the present invention.

The input element switch 1 is a switch that detects and outputs the state of an operating element of a vehicle operating section such as a headlight switch or an ignition switch, and the output of the input element switch 10 is connected to a memory input terminal of a memory circuit 3.4. ing.

The door switch 2 is a switch that detects and outputs the open or closed state of a vehicle door, and the output of the door switch 2 is connected to a storage command terminal of a storage circuit 3.4.

The memory circuit 3 is a circuit for storing the output of the input element switch when 1 is open. Memory circuit 4 is a circuit for storing the output of the input element switch 1 when the door is closed. The outputs of the memory circuits 3 and 4 are each connected to a discrimination circuit 5.

The determination circuit 5 is a circuit that determines whether or not to perform delay control according to the truth table shown in FIG. The output of the discrimination circuit 5 is branched, and one side is connected to the write drive circuit 6 and the other side is connected to the measurement circuit 8. The light drive circuit 6 is a circuit that lights up the light 7 according to the output from the discrimination circuit 5. The light 7 is a light such as a 7-d light or a room light.

The measurement circuit 8 is a circuit that starts measurement from the time when there is an output from the discrimination circuit 5 and outputs a signal after a certain period of time has elapsed. The output of the measuring circuit 8 is connected to the memory circuits 3 and 4.

Next, the operation of the embodiment of the vehicle light turn-off delay device of the present invention will be described.

In the case of delaying the turning off of the room light, the input element switch 1 is constituted by an ignition switch, and the light 7 is a room light. When the door is open and the door switch is on, the signal from the input element switch 1 is stored in the input element switch 3, and when the door is closed and the door switch is off, the signal from the input element switch 1 is recorded. , a is written in circuit 4.

The determination circuit 5 performs the delay operation only when the conditions shown in FIG. 2 are satisfied. Specifically, the following conditions are assumed. At night, with the engine running, the driver opens the door and turns on the interior light to get out of the vehicle. After that, turn off the ignition switch, turn off the engine, get out of the car, and close the door. The delay operation is performed only when such an operation is performed. In other words, as shown in the upper part of Figure 2, the delay operation is performed only when the ignition switch is on when the door is opened and the ignition switch is turned off when the door is closed, and is not performed in other cases. . For example, during the day, the door cannot be opened in order to turn on the room light before the ignition switch is turned off, so the ignition switch is turned off when the door is opened. In this case, no matter what state the ignition switch is in when the door is closed, the delay operation is not performed. Note that the * mark in FIG. 2 is a symbol meaning that the ignition switch may be in either on or off position.

The discrimination circuit 5 outputs the signal to the light drive circuit 6 to turn on the room light L-7. At this time, the measuring circuit 8 monitors the lighting time and outputs the signal after a certain period of time has elapsed.
．． a Reset circuits 3 and 4. For this reason, the determination circuit 5 no longer satisfies the above-mentioned conditions, so it stops outputting and the light 7 is turned off.

When the extinguishing of the navel light is delayed, the input element switch 1 is the ignition switch and the headlight switch, and the light 7 is the henodry I-.

In this case, the conditions established by the discrimination circuit 5 are that the engine is running, the headlight is on, and the door is opened in order to get off the vehicle. After that, turn off the engine, turn off the lights, get off the train, and when you close the door, perform the delay operation (see the bottom of Figure 2).

In addition, the operation of turning off the engine and drying the hen! The operation of turning off - may be performed in either direction first.

FIG. 3 is a circuit diagram showing an embodiment in which the vehicular light-off delay device according to the present invention is used as a room light extinction delay device.

The ignition switch 11 is a switch that constitutes the input element switch 1, and is a switch for connecting the voltage of the battery BATT to the ignition circuit Lla. The engine operates when the ignition switch 11 is on, and turns off when the ignition switch 11 is off. The on/off signal of the ignition switch 11 is branched, and one side is connected to the data terminal of a D-type flip-flop 31 that constitutes the memory circuit 3, and the other side is connected to the data terminal of a D-type flip-flop 41 that constitutes the memory circuit 4. ing.

The door switch 21 is a switch for detecting the open/closed state of the door, and is turned off when the door is closed and turned on when the door is open. When the door switch 21 is on, the room light relay 62 is turned on and the room light 1-71 is lit. The on/off signal of the door switch 21 is branched via an inverter 32, one side is connected to the clock terminal of the D-type flip-flop 31, and the other side is further connected to the clock terminal of the D-type flip-flop 41 via an inverter 42. There is.

The D-type flip-flop 31 is a memory circuit for storing input elements when the door is opened, and is a circuit for storing and outputting the signal input to the data gate immediately before the input to the clock terminal. However, D type flip-flop 31
The output is a negative logic output terminal that inverts and outputs the stored signal. The D-type flip-flop 41 is a storage circuit for storing input elements when the door is closed, and is a circuit that stores and outputs the signal input to the data terminal immediately before the input to the clock terminal.

The output terminal of the D-type flip-flop 31 and the output terminal of the D-type flip-flop 41 are respectively connected to the input terminal of a NOR circuit 51 constituting the discrimination circuit 5. The NOR circuit 51 is a logic circuit that outputs a high-level signal only when two input terminals are both at low level. The output of the NOR circuit 51 is connected to the lie 1-drive circuit 6.

The write drive circuit 6 includes an amplifier 61 and a transistor T r
, room light relay 62, etc. When the output of the NOR circuit 51 is at a high level, the transistor T
When r is turned on and the room light relay 62 is closed,
The room light 71 is turned on by the battery BATT.

The measurement circuit 8 is connected to the output of the NOR circuit 51, and is composed of an integrating circuit 81 consisting of a resistor R4 and a capacitor C4, an amplifier '82, and a differentiating circuit 83 consisting of a resistor R5 and a capacitor C5. ing. The measuring circuit 8 is a circuit that monitors the output of the NOR circuit 51 and outputs the output after a certain period of time has elapsed. The output of the measuring circuit 8 is connected to the recent terminal of the D-type flip-flop 31 and the cent terminal of the D-type flip-flop 41.

Next, the operation when delaying the room light will be explained.

When the engine is running, the ignition switch 11 is on, so the D-type flip-prop 31.
A high level signal is connected to both data terminals 41. When the door is opened to get off the vehicle, the door switch 2 is turned on, the room light relay 62 is turned on, and the room light 71 is turned on. At the same time, the inverter 3 is connected to the clock terminal of the D-type flip-flop 31.
A high level signal is connected to the D-type flip-flop 41 via inverters 32 and 42, and a low level signal is connected to the clock terminal of the D-type flip-flop 41 via inverters 32 and 42. Therefore, the D-type flip-flop 31 stores a high-level signal input to the data terminal, and further outputs an inverted low-level signal.

Thereafter, when the ignition switch 11 is turned off to turn off the engine, low-level signals are connected to the data terminals of the D-type flip-flops 31 and 41. When you close the door after getting off the train, the door switch 21 is turned off, so a low level signal is connected to the clock terminal of the D-type flip-flop 31 via the inverter 32, and the clock terminal of the D-type flip-flop 41 is connected to the clock terminal of the D-type flip-flop 31. A high level signal is connected to the imparks 32 and 42. Therefore, the D-type flip-flop 41 stores one low-level signal input to the data terminal, and
The low level signal is output from the output terminal.

Since the signals input to the NOR circuit 51 constituting the discrimination circuit 5 both become low level, the output of the NOR circuit 51 becomes high level. Therefore, a no-y level signal is input to the base of the transistor Tr of the write drive circuit 6. When the transistor Tr becomes conductive, the door switch 21
Even if the room light relay 62 is in an off state, the room light relay 62 is closed and the room light 71 continues to be lit.

On the other hand, the output of the NOR circuit 51 is the integral field circuit 11 of the measurement circuit 8.
#r81, and after a delay time determined by the time constant has elapsed, it is output and connected to the recent terminal of the D-type flip-flop 31 and the D-type flip-flop 41.
Input a noise level signal to the set terminal. For this reason, the condition that the outputs of the D-type flip-flow knobs 31 and 41 are both low level no longer holds true, so the output of the NOR circuit 51 becomes low level. Therefore, transistor T1 becomes non-conductive, room light relay 62 is turned off, and room light 71 is turned off.

Note that the delay operation does not work in modes other than the above. For example, if the ignition switch 11 is off when the door is opened and the door switch 21 is on as in the above example, the output of the D-type flip-flop 31 will be at a high level, so the D-type flip-flop 41 will be turned on. No matter what state the output is in, the output of the NOR circuit 51 will be at a low level. Furthermore, if the ignition switch 11 is on when the door is closed and the door switch 21 is off, the output of the D-type flip-flop 41 will be at a high level. Even if there is, the output of the NOR circuit 51 is at a low level. Therefore, no delay operation is performed.

FIG. 4 is a circuit diagram showing an embodiment in which the vehicle light turn-off delay device according to the present invention is used as a turn-off delay device for a hendride. Note that the same parts as in the circuit shown in FIG. 3 are given the same reference numerals.

The ignition switch 11 and the headlight switch 12 are switches that constitute the human power element switch 1. The ignition switch 11 is a switch for connecting the battery BATT to the ignition circuit 11a. The engine operates when the ignition switch 11 is on, and turns off when the ignition switch 11 is off. The on/off signal of the ignition switch 11 is sent to the gate circuit 13.
■ Connected to the terminal. headlight switch 12
is a switch for turning on the headlight 72, to which the headlight relay 63 is connected, and the battery BAT
T, the headlights 72 are turned on. The on/off signal of the headlight switch 12 is connected to the ■ terminal of the gate circuit 13. The gate circuit 13 is a negative logic OR circuit whose ■ terminal inverts the input signal. The output of the gate circuit 13 is branched, and one side is connected to the data terminal of a D-type flip-flop 31 that constitutes the memory circuit 3, and the other side is connected to the data terminal of a D-type flip-flop 41 that constitutes the memory circuit 4. .

The door switch 21 is a switch for detecting the open/closed state of the door, and is turned off when the door is closed and turned on when the door is open. When the door switch 21 is on, the room light 71 lights up. In this case, the room light 71 is not subject to the turning-off delay. The on/off signal of the door switch 21 is branched via an inverter 32, one side is connected to the clock terminal of the D-type flip-flop 31, and the other side is further connected to the clock terminal of the D-type flip-flop 41 via an impark 42. It is connected.

The D-type flip-flop 31 is a memory circuit for recording input elements when the door is opened, and is a circuit for storing and outputting the signal input to the data terminal immediately before the input to the clock terminal. However, the output of the D-type flip-flop 31 is a negative logic output θ1j, which inverts and outputs the stored signal. The D-type flip-flop 41 is a memory circuit for storing input elements when the door is closed.
This circuit stores and outputs the signal that was input to the data terminal immediately before the input to the clock terminal.

The output terminal of the D-type flip-flop 31 and the output terminal of the D-type flip-flop 41 are respectively connected to the input terminal of a NOR circuit 51 constituting the discrimination circuit 5. The NOR circuit 51 is a logic circuit that outputs a high level signal only when both input terminals are at low level. The output of the NOR circuit 51 is connected to the write drive circuit 6.

The write drive circuit 6 includes an amplifier 61, a transistor Tr,
It is composed of a headlight relay 63 and the like. When the output of the NOR circuit 51 is at a high level, the transistor Tr is turned on, and when the forward drive relay 63 is closed, the headlight 72 is turned on by the battery BATT.

The measurement circuit 8 is connected to the output of the NOR circuit 51 and is composed of an integrating circuit 81 consisting of a resistor R4 and a capacitor C4, an amplifier 82, and a differentiating circuit 83 consisting of a resistor R6 + capacitor C5. . The measuring circuit 8 is a circuit that monitors the output of the NOR circuit 51 and outputs the output after a certain period of time has elapsed. The output of the measuring circuit 8 is connected to the recent terminal of the D-type flip-flop 31 and the cent terminal of the D-type flip-flop 41.

Next, the operation when delaying the headlight 1- will be explained.

When the engine is running, the ignition switch 11 is on, and when the headlights 72 are on, the headlight switch 12 is on. Therefore, the ■ terminal of the gate circuit 13 has a low level, ■
Since a high level signal is input to the terminal, its output will be high level. Therefore, high level signals are connected to the data terminals of the D-type flip-flops 31 and 41. When I opened the door to get off,
Since the door switch 2 is turned on, a high-level signal is connected to the clock terminal of the D-type flip-flop 31 via the in-hark 32, and a low-level signal is connected to the clock terminal of the D-type flip-flop 41 via the in-hook 32 and 42. level signal is connected. Therefore, D-type free
The knob flop 31 stores a high level signal input to a data terminal, and further inverts the signal to output a low level signal.

After that, the ignition switch 11 is turned off to turn off the engine, and the headlight switch 12 is also turned off. Therefore, a high level signal is input to the ■ terminal of the game I circuit 13, and a low level signal is input to the ■ terminal.
Its output becomes low level. Therefore, low level signals are connected to the data terminals of the D-type flip-flops 31 and 41. When you close the door after getting off the train, the door switch 21 is turned off, so a low level signal is connected to the clock terminal of the D-type flip-flop 31 via the in-hark 32, and the clock terminal of the D-type flip-flop 41 is connected to the clock terminal of the D-type flip-flop 31. A high level signal is connected to through inverters 32 and 42. The force 5 is D
The flip-flop 41 stores the low level signal input to the data terminal and outputs the low level signal, and the signals input to the NOR circuit 51 forming the discrimination circuit 5 both become low level. The output of the NOR circuit 51 becomes high level. For this reason, the light drive circuit 6
A high level signal is input to the transistor Tr. When the transistor Tr becomes conductive, the headlight relay 6 and headlight 72 continue to be lit even if the headlight switch 12 is off.

On the other hand, the output of the NOR circuit 51 is
is connected to the current terminal of the D-type flip-flop 31 and the second terminal of the D-type flip-flop 41 after the delay time determined by the time constant has elapsed.
Input a high level signal to the terminal. Therefore, the condition that the outputs of the D-type flip-flops 31 and 41 are both low level is no longer satisfied, so the output of the NOR circuit 51 is low level. Therefore, the 1-range disk Tr becomes non-conductive, the henodride relay 63 is turned off, and the headlight 72 is turned off.

(Effects of the Invention) As explained in detail above, according to the present invention, when delayed operation is required such as at night, the delayed operation of the light can be performed by simply operating the normally used operation switch and door opening/closing operation. This has the effect that when delayed operation of the headlights or room lights is not required, such as during the daytime, it is possible to prevent them from turning on automatically without operating a manual changeover switch or the like.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a vehicle light turn-off delay device according to the present invention, and FIG. 2 is a diagram showing a truth table for explaining the operation of a discrimination circuit. FIG. 3 is a circuit diagram showing an embodiment in which the vehicle light turn-off delay device according to the present invention is used as a room light turn-off delay device. FIG. 4 is a circuit diagram showing an embodiment in which the vehicle light turn-off delay device according to the present invention is used as a headlight turn-off delay device. 1... Input element switch 11... Ignition switch 12... Headlight switch 13... Gate circuit 2, 21... Door switch 3, 4... Memory circuit 31, 41... D type Flip-flops 32, 42...
・Inhaak 5...Discrimination circuit 51...Noah circuit 6...Light drive circuit 61...Amplifier 62...Room light relay 63
...to, Dry relay Tr...Transistor 7...Light 71...Room light 72...Henotry l-8
...Measuring circuit 81... Integrating circuit 82... Amplifier 83... Differentiating circuit BATT. ...Hasoteri Patent Applicant Suzuki Motor Co., Ltd. Agent Patent Attorney Hisashi Inoro

Claims (3)

[Claims] (1) - In a vehicle light extinguishing delay device that delays the extinguishing of the lights when exiting the vehicle, there is a door switch that detects and outputs the open and closed states of the vehicle door, and a door switch that detects and outputs the open and closed states of the vehicle door, and a device that detects the activation of the vehicle operation unit. an input element switch that detects and outputs the input element switch; a first memory circuit that stores the output of the input element switch according to a detection signal of the door closed state of the door switch; a second storage circuit that stores the output of the element switch;
a determination circuit that outputs a delay command signal when it is determined that a light-off delay is necessary based on the outputs of the first and second storage circuits; a light drive circuit that is driven by the output of the determination circuit; The light drive circuit comprises a light that is turned on by a light drive circuit, and a measurement circuit that measures when the output signal of the discrimination circuit is output for a certain period of time and erases the contents stored in the first and second storage devices. A vehicle light turn-off delay device characterized by: (2) The vehicle light turn-off delay device according to claim 1, wherein the light is a room light and the input element switch is an ignition switch. (3) The vehicle light turn-off delay device according to claim 1, wherein the light is a headlight, and the input element switch is a hesodolite switch and an ignition switch.