JPH10225003A - Load-controlling device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the occurrence of dying of battery as much as possible, while an ignition switch is in an 'off' state. SOLUTION: A microcomputer 6 discriminates the 'on' state from the 'off' state of an IG contact 22b of an ignition switch 2 and calculates an elapsed time, from the time when the IG contact 22b of the ignition switch 2 is switched over from 'on' to 'off'. When the elapsed time becomes equal to a time set in advance, relay contact RS1 of a latching relay LR1, provided between a battery 1 and a power circuit 3, an audio storing means 4 and a clock 5, is switched off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load control apparatus for an automobile for controlling power supply from a battery to a load.
In particular, the present invention relates to a load control device for a vehicle in which the battery is prevented from running down while the ignition switch is off.

[0002]

2. Description of the Related Art Conventionally, among various electric components provided in an automobile, there are various types of electric components which, due to their nature, must always be operated irrespective of the state of an ignition switch. If you need backup power,
Directly connected to the battery. Such electrical components include, for example, a clock provided on an instrument panel, and an audio storage means for storing a correspondence between a plurality of switches provided on the instrument panel and broadcast frequencies of a plurality of broadcast stations. is there. When these electrical components are directly connected to the battery, once the time is set, the clock always operates, so that the current time is displayed, and once the correspondence is set, the contents of the audio storage means are stored. Is held, the broadcast station can be selected only by the switch operation.

[0003]

When the vehicle is used, that is, when the engine is operating, the alternator generates electric power, and the generated electric power is supplied to the electric components and the battery. That is, when the engine is stopped, electric power is supplied only to the electric components from the battery. For this reason, when the unused state of the vehicle continues for a long time, there is a possibility that the battery may run down.

In particular, in recent automobiles, the number of electronic control units that require a backup power supply for a built-in memory has been increasing in order to improve the comfort of the vehicle. Power consumption is also increasing. Therefore, when the unused state of the vehicle continues for a long period of time, the risk of running out of the battery increases compared to before.

An object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to provide a load control device for an automobile in which occurrence of a dead battery while an ignition switch is off is prevented as much as possible.

[0006]

SUMMARY OF THE INVENTION The present invention relates to a load control device for an automobile for controlling the supply of power from a battery to a load which is to be constantly operated. And a cut-off control means for cutting off the power supply when an elapsed time from the time when the switch is switched from on to off reaches a preset time.

According to this configuration, the on / off state of the ignition switch is determined, and when the elapsed time from the point when the ignition switch is switched from on to off reaches a preset time, the load from the battery to the load that should be constantly operated is switched from the battery to the load. When the power supply is cut off, the load that should always operate is stopped, but the occurrence of a dead battery is prevented as much as possible.

Further, in the load control apparatus for an automobile according to the present invention, as the load, audio storage means for storing a correspondence relationship between a plurality of switches provided on an instrument panel and broadcast frequencies of a plurality of broadcast stations. (Claim 2).

According to this configuration, when the elapsed time from the point when the ignition switch is switched from on to off reaches the set time, the power supply from the battery to the audio storage unit is cut off, so that the storage in the audio storage unit is stopped. Although the contents are erased, the occurrence of a dead battery is prevented as much as possible.

[0010] In the load control apparatus for a vehicle according to the first or second aspect, the load includes a clock provided on an instrument panel (claim 3).

According to this configuration, when the elapsed time from the time when the ignition switch is switched from on to off reaches the set time, the power supply from the battery to the watch is cut off, so that the operation of the watch stops. However, the occurrence of a dead battery is prevented as much as possible.

Further, in the load control apparatus for a vehicle according to any one of claims 1 to 3, the cutoff control means is provided between the load and a battery, and a time keeping means for keeping track of the elapsed time. Switch means, and switch control means for turning off the switch means when the elapsed time reaches the set time (claim 4).

According to this configuration, the elapsed time from the time when the ignition switch is switched from on to off is measured, and when the set time has elapsed, the switch means interposed between the load and the battery is turned off. As a result, the power supply from the battery to the load is shut off, and the occurrence of dead battery is prevented as much as possible.

According to a fourth aspect of the present invention, there is provided a load control device for an automobile, wherein the load includes a plurality of loads, and the switch means is constituted by a single component interposed between each load and a battery. (Claim 5).

According to this structure, the switch means is constituted by a single component interposed between the plurality of loads and the battery, thereby simplifying the structure.

The load control device for an automobile according to claim 4 or 5, further comprising the switch control means as the load, wherein the switch means is turned on when an ON signal is input, and is turned off. It is switched off when a signal is input, and has a latch function of maintaining an on state even when input of an on signal is stopped, and holding an off state even if input of an off signal is stopped. The on signal is inputted when an ignition switch is turned on, and the off signal is inputted by the switch control means (claim 6).

According to this configuration, when the ignition switch is turned on, an ON signal is input, the switch means is turned on, and power is supplied from the battery to the load. When the ignition switch is switched from on to off, the input of the on signal to the switch means is stopped, but the power supply from the battery to the load is continued by maintaining the on state, and at the time of the switch. The elapsed time from is counted.

When the set time elapses, an OFF signal is input to switch off the switch means, power supply from the battery to the load including the switch control means is cut off, and an OFF signal is input to the switch means. Is stopped, but the off state is maintained, so that the power supply cutoff state is continued, and occurrence of a dead battery is prevented as much as possible.

6. The load control device according to claim 4, wherein said load further includes said switch control means, said switch means comprising a set coil, a reset coil and a relay contact. When the exciting current is supplied to the set coil, the relay contact is turned on, and even when the supply of the exciting current is stopped, the relay contact is kept on,
When the exciting current is supplied to the reset coil, the relay contact is turned off, and the off state of the relay contact is maintained even when the supply of the exciting current is stopped. And an ignition switch connected in series to the ground, the switch control means includes a control switch connected in series to the reset coil between the positive terminal of the battery and the ground, and the elapsed time is The control switch is turned on when the set time comes (claim 7).

According to this configuration, when the ignition switch is turned on, the exciting current is supplied from the battery to the set coil, the relay contact is turned on, and power is supplied from the battery to the load. When the ignition switch is switched from on to off, the supply of the exciting current from the battery to the set coil is stopped, but the power supply from the battery to the load is continued by maintaining the ON state of the relay contact. The elapsed time from the switching time is measured.

When the set time has elapsed, the control switch is turned on, the exciting current is supplied from the battery to the reset coil, the relay contact is switched from on to off, and the battery is connected to the load including the switch control means. The power supply is cut off, and the supply of the excitation current from the battery to the reset coil stops, but the off state of the relay contact is maintained, so that the power supply cutoff state is continued and the battery can run down. It is prevented as much as possible.

In the vehicle load control device according to any one of the first to seventh aspects, a notifying means for notifying a driver and a time when the ignition switch is switched from off to on and before the time. And a notification control means for operating the notification means when the cutoff control means is operating (claim 8).

According to this configuration, at the time when the ignition switch is switched from off to on, if the cutoff control means has been operating before the time, the notifying means for notifying the driver is operated. As a result, the driver is notified that the power supply from the battery to the load that should always be operated is interrupted.

Further, in the load control device for a vehicle according to the present invention, there is provided a notifying means for notifying the driver, and the switch control means operates the notifying means when the power is turned on. (Claim 9).

According to this configuration, when the set time elapses from the time when the ignition switch is switched from on to off, the switch is switched off, and the power from the battery to the load including the switch control, which is to be constantly operated, is supplied. The supply is cut off. Thereafter, when the ignition switch is turned on, the switch means is turned on, power is supplied from the battery to the load including the switch control means, and the notification means for notifying the driver is operated by the switch control means. As a result, the driver is informed that the power supply from the battery to the load that should be constantly operated is interrupted.

Further, in the vehicle load control device according to claim 8 or 9, a reset operation means for stopping the operation of the notification means when operated is provided (claim 10).

According to this configuration, when the reset operating means is operated, the operation of the notifying means is stopped, so that the power supply from the battery to the load which should always be operated is shut off while the ignition switch is off. This is reliably notified to the operator of the reset operation means, that is, the driver.

[0028]

FIG. 1 is a circuit diagram of an embodiment of an automobile load control device according to the present invention. This vehicle load control device includes a battery 1, an ignition switch 2
Power supply circuit 3, audio storage means 4, clock 5
And a microcomputer (microcomputer) 6 for controlling the operation of each part, a latch relay LR1, and a transistor Q1.
And

The battery 1 is a power supply that outputs a predetermined output voltage V _B (DC 12 V in this embodiment). Power supply circuit 3
Is a DC-D using a switching transistor (not shown).
Consists switching power supply circuit comprising the C converter, and switching the output voltage V _B of the battery 1 is applied to the primary winding by the switching transistor, rectifies the voltage induced in the secondary winding, a predetermined and smooth It outputs a voltage V _CC (5 V DC in this embodiment).

The ignition switch 2 has an ACC contact 2
1, provided with IG contacts 21a and 21b and an ST contact (not shown) for operating a circuit connection between the battery 1 and various parts and starting the engine by an ignition key. When the IG contacts 21a and 21b are on, A
The CC contact 21 is also turned on.

The audio storage means 4 stores the correspondence between a plurality of switches (not shown) arranged on an instrument panel (not shown) and the broadcast frequency of a broadcasting station. This vehicle is
A switch setting means (not shown) for setting a correspondence between the switch and the broadcast frequency is provided. When the correspondence is set, the audio storage means 4 always supplies power from the battery 1 as a backup power supply. By receiving the supply, the correspondence is stored without being erased. With the audio storage means 4, a desired broadcast station can be easily selected by simply operating the switch, and the operability and comfort of the vehicle can be improved.

The clock 5 is disposed on an instrument panel (not shown).
The current time is displayed digitally on a liquid crystal display or analog display on a long hand or short hand. The timepiece 5 displays the current time by receiving a constant power supply from the battery 1 to operate a built-in timer count function.

The latch relay LR1 is connected to a relay contact RS1.
And a set coil SC1 and a reset coil RC1 respectively wound around an iron core made of a magnet. Once the excitation current is supplied to the set coil SC1, the relay contact RS1 is turned on, and the supply of this excitation current is stopped. The reset coil R
When the exciting current is supplied to C1, the relay contact RS1 is turned off, and even if the supply of the exciting current is stopped, a latch function to keep the off state is provided.

One end of the set coil SC1 is connected to the IG contact 22
is connected to the positive terminal of the battery 1 via a, one end of the reset coil RC1 is connected to the emitter of the transistor Q1, and the other ends of the coils SC1 and RC1 are grounded. One of the relay contacts RS1 is connected to the positive terminal of the battery 1 and the other is connected to the power supply circuit 3, the audio storage means 4 and the clock 5, and when the relay contact RS1 is turned on, power is supplied from the battery 1 to each part. Is supplied.

The collector of the transistor Q1 is the battery 1
And the base is connected to the output terminal P1 of the microcomputer 6. The power terminal of the microcomputer 6 is connected to the output terminal of the power circuit 3, and the input terminal P2 of the microcomputer 6 is connected to the power circuit 3 via a current limiting resistor.
, And is grounded to the ground via the IG contact 22b.

The microcomputer 6 stores a preset data such as a set time T, which will be described later, and a control program.
An M61 and a RAM 62 for temporarily storing data are provided, and have the following functions (1) to (4).

(1) Function as an ignition switch determining means for determining whether the IG contact 22b of the ignition switch 2 is on or off. The signal level of the input terminal P2 is IG
When the contact 22b is turned off is maintained at a voltage V _CC, because when on is the ground level, by detecting the signal level, off of the IG contact 22b of the ignition switch 2 is judged.

(2) A function as a time measuring means for measuring an elapsed time from the time when the IG contact 22b of the ignition switch 2 is switched from on to off.

(3) A function as cutoff control means for turning off the relay contact RS1 of the latch relay LR1 when the elapsed time reaches a preset time T (8 days in this embodiment). That is, when the elapsed time reaches the set time T, a high-level signal is output from the output terminal P1, the transistor Q1 is turned on, and the exciting current is supplied from the battery 1 to the reset coil RC1 of the latch relay LR1. The contact RS1 is turned off.

(4) If the IG contact 22b of the ignition switch 2 is switched from off to on while the elapsed time is being counted, that is, before the set time T has elapsed, the counting is stopped.

Next, the operation will be described with reference to FIG. FIG. 2 is a timing chart showing the state of each unit. IG contacts 22a, 22b of ignition switch 2
Is ON, the exciting current is supplied to the set coil SC1, and the relay contact RS1 is ON.

At time t ₁ , the ignition switch 2
When the contacts 22a and 22b are switched from on to off, the microcomputer 6 starts measuring elapsed time. Further, the supply of the exciting current to the set coil SC1 is stopped, but the ON state of the relay contact RS1 is maintained.

At a time point t ₂ when a set time T elapses from the time point t ₁ , the transistor Q 1 is turned on by the microcomputer 6 and the reset coil RC
1 is supplied with an exciting current, and the relay contact RS1 is turned off.

As a result, the power supply to the audio storage means 4 and the clock 5 is stopped and their operations are stopped, respectively, and the power supply to the power supply circuit 3 is stopped and the microcomputer 6 also stops operating. Therefore, although the transistor Q1 is turned off and the supply of the exciting current to the reset coil RC1 is stopped, the off state of the relay contact RS1 is maintained.

[0045] Thereafter, IG contact 22a of the ignition switch 2 at t ₃ point, 22b is switched from OFF to ON, the exciting current is supplied to the set coil SC1,
The relay contact RS1 is turned on, the power supply to the power supply circuit 3, the audio storage means 4, and the clock 5 is restarted, and the microcomputer 6 operates again from the initial state.

As described above, according to the present embodiment, the battery 1, the power supply circuit 3, the audio storage means 4, and the clock 5 at the time when the set time T has elapsed since the IG contacts 22a, 22b of the ignition switch 2 were turned off. The power supply from the battery 1 to the power supply circuit 3, the audio storage means 4, and the timepiece 5 is cut off by turning off the relay contact RS1 interposed between the vehicle and the vehicle. When not using, the battery can be prevented from running out as much as possible.

If the set time T is set to 8 days,
These 8 days are, for example, from 0:00 on Sunday to 2 on next Sunday.
Until 4:00. Therefore, in the case of a vehicle used only on Sunday, if the vehicle is used every Sunday, the battery 1
, The power supply to the power supply circuit 3, the audio storage means 4, and the clock 5 is not interrupted, and the power supply is interrupted only when an unused Sunday occurs. This makes it possible to prevent the battery from running down as much as possible without frequently interrupting the power supply.

In the above embodiment, the latch relay LR
As shown in FIG. 3, reference numerals 1 and the like are arranged inside an electric junction box 11 arranged at an appropriate position in the vehicle. FIG. 3 is a diagram schematically illustrating a wiring state inside the electric connection box 11.

On the other hand, as shown in FIG. 1, the power supply circuit 3 (microcomputer 6), the audio storage means 4 and the clock 5 are all connected to the positive terminal of the battery 1 via the relay contact RS1 of the latch relay LR1. I have.

Therefore, as shown in FIG.
By connecting the wiring group connected to the audio storage means 4 and the timepiece 5 to the latch relay LR1 in a state where they are arranged near each other, the wiring state inside the electric connection box 11 can be simplified, thereby maintaining Each wiring can be easily identified at the time of inspection or the like, and workability can be improved.

It should be noted that the present invention is not limited to the above embodiment, but can adopt the following modifications (1) to (5). (1) Instead of the IG contact 22b of the ignition switch 2, the ACC contact of the ignition switch 2 is connected to the microcomputer 6
May be connected to the input terminal P2.

The ACC contact of the ignition switch 2 is connected to the input terminal P2 of the microcomputer 6 instead of the IG contact 22b of the ignition switch 2, and the ACC contact is replaced with the ACC contact 22a of the ignition switch 2.
The contact 21 is connected to the positive terminal of the battery 1 and the set coil SC1.
May be interposed between them.

According to these embodiments, the relay contact RS1 of the latch relay LR1 is turned off when the set time T has elapsed since the ACC contact of the ignition switch 2 was turned off, and the battery 1, the power supply circuit 3, the audio storage means 4
Since the power supply to the watch 5 is shut off, it is possible to prevent the battery from running down as much as possible when the vehicle is not used for a long period of time, as in the above embodiment.

(2) The set time T is not limited to eight days.
When the set time T is eight days, when the vehicle is used on a Saturday afternoon and not used after the vehicle is used, and when the vehicle is used on the following Sunday afternoon, the power is already supplied from the battery 1. Circuit 3, audio storage means 4, and clock 5
The power supply to is shut off.

However, assuming that the set time T is 9 days, the power supply is not interrupted even in the above case, and the power supply is interrupted only when a weekend (Saturday and Sunday) is not used. Thus, it is possible to prevent the battery from running down as much as possible without frequently interrupting the power supply.

(3) In the above embodiment, a variable resistor R may be further provided so that the set time T can be changed as shown by a broken line in FIG. According to this embodiment, for example, in winter, when the battery is likely to rise, the set period T is shortened, so that the battery can be more reliably prevented from rising.

(4) In the above embodiment, a notifying unit 7 may be further provided as shown by a broken line in FIG. The notification unit 7 includes a warning lamp 71, a transistor 72, and a reset switch 73.

One end of the warning lamp 71 is connected to a transistor 72.
The other end is connected to the ignition switch 2
Is connected to the positive terminal of the battery 1 via the ACC contact 21 of the battery. The base of the transistor 72 is connected to the output terminal P3 of the microcomputer 6, and the emitter is grounded. One end of the reset switch 73 is connected to the input terminal P4 of the microcomputer 6, is pulled up to the voltage V _cc via a current limiting resistor, and the other end is grounded.

In this embodiment, the microcomputer 6 further has the following functions (A) to (C). (A) The control program stored in the ROM 61 is "00
The initial processing program from the address "00" to the transition to the main routine includes a step of turning on the warning lamp 71. (B) The on / off state of the reset switch 73 is determined by detecting the signal level input to the input terminal P4. (C) When the reset switch 73 is turned on while the warning lamp 71 is on, a low level signal is output from the output terminal P3 to turn off the transistor 72, thereby turning off the warning lamp 71.

When the microcomputer 6 operates as shown in FIG. 2 in this embodiment, the reset start of the microcomputer 6 is performed at time t ₃ , so that the warning lamp 71 is turned on.

As described above, the notification unit 7 is provided,
Warning lamp 71 is turned on when the reset relay starts, so that the set time T elapses and the latch relay L
It is possible to reliably notify the driver that R1 has been turned off.

Thus, it is possible to reliably prevent a situation in which the driver runs without noticing the necessity of resetting the correspondence between the switch and the broadcast frequency by the switch setting means and resetting the time of the clock 5. can do.

In this case, the warning lamp 71 is also turned on when the microcomputer 6 is turned on for the first time in a manufacturing line or the like. Should be turned off.

Further, a sound generating means such as a piezoelectric buzzer may be provided in place of the warning lamp 71 to notify the driver by sound.

(5) In the modification (4), as shown by a broken line in FIG. 1, an EEPROM (Electrically Erasable
and Programmable Read Only Memory) 8. In this embodiment, the microcomputer 6 has the functions described above.
It has the following functions (D) and (E) instead of (A). (D) When the elapsed time from the point when the IG contact 22b of the ignition switch 2 is switched from on to off reaches the set time T, the set time T elapses before the relay contact RS1 of the latch relay LR1 is turned off. Is stored in the EEPROM 8.

(E) When the power is turned on, the stored contents of the EEPROM 8 are read, and when the fact that the set time T has elapsed is stored, the stored contents are erased and the warning lamp 71 is turned on. .

According to this embodiment, the warning lamp 71 is provided every time the microcomputer 6 is turned on, such as when replacing the battery.
Is not turned on, and the warning lamp 71 can be turned on only when the set time T has elapsed.

[0068]

As described above, according to the present invention,
Since it is determined whether the ignition switch is on or off, the power supply from the battery to the load that should be constantly operated is cut off when the elapsed time from the time when the ignition switch is switched from on to off reaches a preset time. In addition, the occurrence of a dead battery can be prevented as much as possible.

Further, by measuring the elapsed time from the time when the ignition switch is switched from on to off, and when the set time has elapsed, by turning off the switch means provided between the load and the battery, The power supply from the battery to the load can be cut off, whereby the occurrence of dead battery can be prevented as much as possible.

Further, by configuring the switch means with a single component interposed between a plurality of loads and the battery, the configuration can be simplified.

The load further includes switch control means. The switch means is switched on when an ON signal is input, and is switched off when an OFF signal is input, and It has a latch function that keeps the ON state even when the input of the ON signal stops, and keeps the OFF state even when the input of the OFF signal stops. The ON signal is input by turning on the ignition switch, and the OFF signal is input. Is configured to be input by the switch control means, so that when the set time elapses and the switch means is turned off, power supply from the battery to the load including the switch control means is cut off and the power is supplied to the switch means. Input of the OFF signal stops, but the OFF state is maintained, so that the power supply cutoff state can be continued, and the It is possible to prevent as much as possible.

Further, the load further includes switch control means, and the switch means comprises a latch relay having a set coil, a reset coil and a relay contact, and turns on the relay contact when an exciting current is supplied to the set coil. When the excitation current supply is stopped, the relay contacts are kept on, and when the excitation current is supplied to the reset coil, the relay contacts are turned off. The set coil is connected in series with the ignition switch between the positive terminal of the battery and the ground, and the switch control means resets between the positive terminal of the battery and the ground. Equipped with a control switch connected in series to the coil. When the relay contact is turned off after a lapse of time, the power supply from the battery to the load including the switch control means is cut off and the supply of the exciting current to the reset coil is stopped, but the off state is maintained. ,
The power supply cutoff state can be continued, and the occurrence of a dead battery can be prevented as much as possible.

Further, when the ignition switch is switched from off to on, if the shut-off control means has been operating before the time, the notifying means for notifying the driver is operated, whereby the battery is discharged. It is possible to notify the driver that the power supply to the load that should always be operated has been interrupted.

The switch control means operates the notification means when the power is turned on, so that the power supply from the battery is cut off after a set time has elapsed. Thereafter, when the ignition switch is turned on and power is supplied from the battery to the load including the switch control means, the notification means for notifying the driver by the switch control means operates, and the battery is always operated. The driver can be notified that the power supply to the load to be cut off has been interrupted.

Further, by providing the reset operation means for stopping the operation of the notification means when operated, it is possible to confirm that the power supply from the battery to the load which should be constantly operated while the ignition switch is off is cut off. It is possible to reliably notify the operator of the reset operation means, that is, the driver.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of an embodiment of a vehicle load control device according to the present invention.

FIG. 2 is a timing chart showing a state of each unit.

FIG. 3 is a diagram schematically showing a wiring state inside the electric connection box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Battery 2 Ignition switch 21 ACC contact 22a, 22b IG contact 3 Power supply circuit 4 Audio storage means 5 Clock 6 Microcomputer 61 ROM 62 RAM 7 Notification section 71 Warning lamp 72 Transistor 73 Reset switch LR1 Relay SC1 Set coil RC1 Reset coil RS1 Relay contact R variable resistance

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Motonori Kido 1-7-10 Kikuzumi, Minami-ku, Nagoya-shi, Aichi Inside Harness Research Institute, Inc. (72) Inventor Hideaki Toyama 1 Kikuzumi, Minami-ku, Nagoya-shi, Aichi No.7-10, Harness Research Institute, Inc.

Claims (10)

[Claims] 1. An automobile load control device for controlling power supply from a battery to a load which is to be constantly operated, wherein an ignition switch determining means for determining whether an ignition switch is on and off, and wherein the ignition switch is switched from on to off. And an interruption control means for interrupting the power supply when an elapsed time from a predetermined time reaches a preset time. 2. The vehicle load control device according to claim 1, further comprising an audio storage unit configured to store, as the load, a correspondence relationship between a plurality of switches disposed on an instrument panel and broadcast frequencies of a plurality of broadcast stations. A load control device for a vehicle, comprising: 3. The load control device for a vehicle according to claim 1, wherein the load includes a clock provided on an instrument panel. 4. The load control device for a vehicle according to claim 1, wherein said cutoff control means is provided between said load and a battery, and a time keeping means for measuring said elapsed time. A switch control means for turning off the switch means when the elapsed time reaches the set time. 5. The load control device for a vehicle according to claim 4, wherein said load includes a plurality of loads, and said switch means is constituted by a single component interposed between each load and a battery. A load control device for an automobile, wherein 6. The vehicle load control device according to claim 4, further comprising the switch control means as the load, wherein the switch means is turned on when an ON signal is input, and is turned off. It is switched off when a signal is input, and has a latch function of maintaining an on state even when input of an on signal is stopped, and holding an off state even if input of an off signal is stopped. Wherein the on signal is inputted when an ignition switch is turned on, and the off signal is inputted by the switch control means. 7. The load control device according to claim 4, wherein the load further includes the switch control means, and the switch means includes a set coil, a reset coil, and a relay contact. When the exciting current is supplied to the set coil, the relay contact is turned on, and even when the supply of the exciting current is stopped, the on state of the relay contact is maintained, and the exciting current is supplied to the reset coil. Then, the relay contact is turned off, and the relay contact is maintained in an off state even when the supply of the exciting current is stopped.The set coil includes an ignition switch between the positive terminal of the battery and the ground. The switch control means is connected to the reset coil between the positive terminal of the battery and the ground. An automobile load control device comprising a control switch connected in series, wherein the control switch is turned on when the elapsed time reaches the set time. 8. The vehicle load control device according to any one of claims 1 to 7, wherein the notification means for notifying the driver and the time when the ignition switch is switched from off to on and before the time. And a notification control means for operating the notification means when the cutoff control means is operating. 9. The load control device for an automobile according to claim 6, further comprising a notifying unit for notifying a driver, wherein the switch control unit operates the notifying unit when power is turned on. A load control device for an automobile, wherein 10. The load control device for a vehicle according to claim 8, further comprising a reset operation device for stopping the operation of the notification device when operated.