JP2787393B2 - Vehicle lighting control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lighting control device for controlling the turning on / off state of a vehicle interior light in conjunction with the opening / closing operation of a vehicle door.

[0002]

2. Description of the Related Art Conventionally, a cabin light is lit while an open state of a door is detected, and when the door is closed, the light of the cabin light is gradually reduced by a timer operation for a predetermined time. 2. Description of the Related Art There has been proposed a vehicle lighting control device that dims light and turns off the light. However, in such a conventional vehicle lighting control device, for example, the vehicle interior light is maintained in a lighting state in response to the driver getting into the vehicle. When the vehicle is started and started, the vehicle must travel in a bright state of the vehicle interior, which makes it difficult to see outside, especially during traveling at night, and has a problem in securing visibility.

[0003] Therefore, in order for the driver to start driving, the key switch is changed from the OFF (OFF) state to the ON (ON) state (the key is shifted to the ON position) in a state where the timer operation of the timer circuit is executed. In such a case, it has been proposed that the timer operation is stopped to ensure that the vehicle interior lights are turned off when the vehicle starts moving.

[0004]

However, in such a conventional vehicle lighting control device, the lighting state of the vehicle interior lamp, which is the original purpose, is canceled by turning the key switch from off to on. Operate a switch that does not operate unless the key switch is turned on, such as a power window switch, or after a key switch is turned on, such as a cold start operation in a car with a cold start button such as a diesel engine car In the case of the operation, the switch operation of the power window and the cold start operation as described above are difficult to perform because the vehicle interior light is turned off.

For this reason, if the door is closed and the key switch is turned on, but the engine is not yet turned on, it is desirable that the canceling circuit for canceling the lighting state of the cabin light does not work. The present invention has been made in view of such a problem, and has a door closed,
It is another object of the present invention to provide a vehicle lighting control device that cancels a vehicle interior light for the first time when an engine is on.

[0006]

SUMMARY OF THE INVENTION Therefore, a vehicular lighting control apparatus according to the present invention detects a door opening / closing state of a vehicle.
The open / closed state of the door is detected by the open / closed state detector.
While the door is open, turn on the vehicle interior lights and open the door.
The door is changed from the open state to the closed state by the closed state detection means.
When it is detected that the transfer has been made,
The cabin light is turned on, and after the lapse of the predetermined time, the
In those turning off the cabin lights, the engine operating condition detecting means for detecting an operating condition of the mounting of the engine in the vehicle is provided, by the door state detection means, to shift the door from the open state to the closed state Has been detected , and the engine operating state detecting means has actually
When the on-operation state of the engine is detected, a compartment light forcibly turning off control means for forcibly turning off the compartment light is provided even if the predetermined time has not elapsed since that time. (Claim 1).

Further, in the vehicle lighting control device of the present invention,
As the engine operating state detecting means, an oil pressure switch for judging the rotation stop state of the engine may be used.

[0008]

In the vehicle lighting control apparatus of the present invention, the door open / closed state is detected by the door open / closed state detecting means.
While the open state of the door is detected, together with lighting the cabin lights, by the door opening and closing state detecting means, when the door from the open state is detected that is shifted to the closed state, of their <br / > the predetermined time from the time allowed to light the passenger compartment lights, after a predetermined time is performed that turns off the cabin lights, by de <br/> a closing state detecting means, the door from the open state It is detected that the engine has shifted to the closed state , and the engine is in the operating state.
The on-operation state of the engine is actually detected by the detection means
Once, even if the predetermined time has not elapsed since then, the cabin lights forced off control means, be forced to turn off the cabin lights is performed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIGS. 1 to 6 show a vehicle lighting control apparatus as an embodiment of the present invention, and FIG. , FIG. 2 is an electric circuit diagram thereof, FIG. 3 is a partial perspective view showing a vehicle equipped with the device, FIG. 4 is a diagram illustrating key positions, FIG. 5 is a flowchart for explaining the operation of the device, FIG. Is a time chart for explaining the operation of the present apparatus.

In this embodiment, as shown in FIG.
A cabin light (room lamp) 5 is installed on the ceiling in the cabin of the cab-over type vehicle, and the cabin light 5 is controlled by a lighting control device according to the present embodiment to turn on or off. It is supposed to be. Note that FIG.
, 7 is a door. By the way, as shown in FIG. 2, the present lighting control device includes a vehicle interior light control unit 10, and a door switch 1, an oil pressure switch 2, and a key switch 6 are provided to the vehicle interior light control unit 10. A detection signal is input, and a turn-on / off control signal is output from the interior light control unit 10 to the interior light 5.

Here, the door switch 1 is connected to the door 7 (FIG. 3).
(See FIG. 3), which is turned on (ON) when the door 7 is open, and turned off (OFF) when the door 7 is closed. The oil pressure switch 2 is turned off when the discharge pressure of an oil pump driven by the engine exceeds a predetermined value. Since the oil pump does not generate a predetermined discharge pressure unless the engine is operated, the oil pressure switch 2 is turned off. The pressure switch 2 functions as a switch for judging the rotation stop state of the engine, and further constitutes engine operation state detection means for detecting the operation state of the engine mounted on the vehicle.

The key switch 6 is turned off when the key is in the OFF position, the LOCK position, and the ACC (accessory) position (see FIG. 4), and the key is turned on (see FIG. 4). The switch is turned on when the switch is in the ON position. The position of ST (starter) in FIG. 4 is a position where the key should be moved only when the engine is started. Further, the compartment light control unit 10 receives signals from the door switch 1 and the oil pressure switch 2 and controls the on / off state of the compartment light 5. Reference numeral 10 denotes a CPU 11 and a cabin light drive circuit 12
And so on.

The CPU 11 is a main part of the vehicle interior light control unit 10. The CPU 11 is connected to the door switch 1, the oil pressure switch 2, and the key switch 6 via a required resistor. The room light 5 is connected via a vehicle interior light drive circuit 12. That is, this CP
U11 manages signals (information) from the door switch 1, the oil pressure switch 2, and the like by having the functions of a dimming control unit and a cabin light forced extinguishing control unit, which will be described later, and turns on / off the cabin light 5. The setting of the OFF state is performed via the vehicle interior light drive circuit 12.

The cabin light drive circuit 12 is provided with an FET having a large power for a small size. Here, a control block diagram focusing on the functions of the CPU 11 is shown in FIG. 1. In FIG. 1, reference numeral 13 denotes dimming control means.
Means that while the door switch 1 detects the open state of the door 7, the interior light 5 is turned on, and the door switch 1 detects that the door 7 has transitioned from the open state to the closed state. Then, the cabin light 5 is turned on for a predetermined time set by the timer from that time, and the cabin light 5 is turned off after the predetermined time elapses. When the door switch 1 detects that the vehicle has been shifted to, the light of the vehicle interior light 5 is gradually reduced (dimmed). The interior light 5 is set to be turned off when the predetermined time has elapsed as a result of dimming.

Reference numeral 14 denotes a cabin light forced extinguishing control means. The cabin light forced extinguishing control means 14 detects that the door switch 1 has shifted the door from the open state to the closed state. Even when the predetermined time has not elapsed from that time, if the ON state of the engine is actually detected by the oil pressure switch 2, the vehicle interior light 5 is forcibly turned off by a software operation.

Therefore, when the door 7 is opened with the engine not running, the cabin light 5 is turned on, and even if the door 7 is closed, it does not go out immediately, but gradually dims.
Although the lighting state is maintained for a predetermined time after the door is closed, when the key is inserted and the engine is started, it is detected that the door has been shifted from the open state to the closed state, and the predetermined time has elapsed since that time. Even when there is no such signal, the vehicle interior light 5 can be forcibly turned off.

Of course, when the engine is running, when the door 7 is opened, the cabin light 5 is turned on, but when the door 7 is closed, it is turned off immediately. This is because, when the engine is running, the driver can immediately start driving, so that the door should be turned off as soon as the door 7 is closed to ensure good visibility.

Next, the operation of the lighting control device will be described with reference to the flowchart of FIG. First, in step S1, it is checked whether or not the door switch 1 is on (that is, the door is open). If it is determined in step S1 that this is the case, the vehicle interior light 5 is turned on in step S2. Thereafter, in step S3, it is checked whether or not the door switch 1 is turned off (that is, the door is closed). If the door is closed, step S4
Then, it is determined by the oil pressure switch 2 whether or not the engine is actually in the ON operation state. yet,
If it is determined that the engine is off,
In step S5, a dimming process is performed.

Then, in step S6, the door switch 1
Is turned on during the dimming process. Here, when the door switch 1 is kept off, the process proceeds to step S7. When the door switch 1 is turned on, the process returns to step S2 again, and
Is turned on at the brightness before the light dimming process is performed. When the door switch 1 is kept in the off state, step S
At 7, it is checked whether or not a predetermined time has elapsed from the start of the dimming until the light is finally turned off. Here, if it is determined that the predetermined time has not elapsed, step S4 is performed again.
In, it is determined whether the engine is actually on. Thus, the dimming process is continued as long as the door switch 1 remains off or the engine is in the off operation state.

If it is determined in step S4 that the engine is actually in the ON state, the cabin light 5 is immediately turned off in step S8. After the interior light 5 is turned off in step S8, step S1 is executed.
It is determined whether the door switch 1 is on (that is, the door is open). If it is determined that the door is still closed at this time, the process jumps to step S8, where The light-off state of No. 5 is maintained.

If it is determined in step S1 that the door switch 1 is on (ie, the door is opened) after the cabin light 5 is turned off in step S8, the cabin is switched on in step S2. The lamp 5 is turned on. 6 (a), 6 (b) and 6 (c) show the ON / OFF output waveform of the door switch 1, the ON / OFF state of the vehicle interior light, the ON / OFF output waveform of the oil pressure switch, and the ON / OFF output waveform of the key switch, respectively. ) And (d).

That is, the following can be understood from FIG. If the initial condition is that all switches are turned off, the vehicle interior light 5 also remains off. First, regarding the operation of the part (A) of FIG. 6, when the door switch 1 is turned on by opening the door from this state, the cabin light 5 is also turned on in response thereto. This is shown in FIG.
Steps S1 to S in the flowchart of FIG.
2 is supported. Then, when the door switch 1 is turned off, dimming starts, the light gradually weakens, and finally turns off. This corresponds to the processing between steps S4 to S7 in the flowchart of FIG.

When the dimming is stopped [FIG. 6B
Part] is the same as the case described above, from the time when the door switch 1 is turned on to turn on the vehicle interior light 5, the time when the door switch 1 is turned off and the time when the dimming is started. However, when the oil pressure switch 2 is turned on, the vehicle interior light 5 is turned off by the vehicle interior light forced extinguishing control means 14. This corresponds to the transition from step S4 to step S8 in the flowchart of FIG. Here, a key switch (see FIG. 6D)
However, even if the light is turned on during the dimming, it does not affect the on / off of the cabin light 5, and in this case, it is understood that the dimming is continuously performed (FIG. 6B )reference).

When the engine is in the actual ON state, the cancel signal is continuously output, so that the compartment light 5 is turned on when the door is opened, and the compartment light 5 is turned off when the door is closed. (See FIG. 6C). Therefore, when it is detected that the door 7 has been shifted from the open state to the closed state, and the predetermined time has not elapsed since that time, even if the key switch is turned on, the oil pressure switch 2 is turned on. Unless the actual on-operation state of the engine is detected, the vehicle interior light 5 is not forcibly turned off, so that a power window switch or the like that does not operate unless a key switch is turned on is operated, or a diesel engine is operated. In a vehicle having a cold start button, such as a vehicle equipped with the vehicle, even when the key switch is turned on as in a cold start operation, the vehicle interior light 5 is lit. The start operation can be easily performed.

Also, as the engine operating state detecting means,
Since the oil pressure switch 2 normally provided in a truck or the like is used, it is possible to share the sensor, thereby contributing to a reduction in cost. Instead of using the oil pressure switch 2 as the engine operating state detecting means, a means for detecting the generated voltage of the alternator or a means for detecting the engine speed may be used.

[0026]

As described above, according to the vehicle lighting control apparatus of the present invention, the open / closed state of the vehicle door is detected.
Door open / closed state detection means detects the open state of the door
While the vehicle is being turned on,
The door is opened to closed by the open / closed state detecting means.
When it is detected that the transition to
Illuminates the cabin light, and after the lapse of the predetermined time,
In those turning off the該車chamber lamp migration, the engine operating condition detecting means for detecting an operating condition of the mounting of the engine in the vehicle is provided, by the door state detecting means, the door from the open state to the closed state Is detected , and is actually detected by the engine operating state detecting means.
When the on operating state of the engine is detected, even if the predetermined time has not elapsed since then, the cabin lights forced off control means forcibly turns off the casing lamp is provided, the power window Even if you operate something that does not work unless you turn on the key switch, such as a switch, or if you have a cold start button such as a diesel engine car, you do it after turning on the key switch like a cold start operation Since the cabin light is turned on, there is an advantage that the power window switch operation and the cold start operation can be easily performed.

In the vehicle lighting control device of the present invention,
Since the engine operating state detecting means is configured as an oil pressure switch for judging the rotation stop state of the engine (this oil pressure switch is usually provided in a truck or the like), the sensor can be shared. Therefore, there is an advantage that can contribute to cost reduction.

[Brief description of the drawings]

FIG. 1 is a control block diagram showing one embodiment of the present invention.

FIG. 2 is an electric circuit diagram showing one embodiment of the present invention.

FIG. 3 is a partial perspective view showing a vehicle equipped with the device.

FIG. 4 is a diagram illustrating key positions.

FIG. 5 is a flowchart for explaining the operation of one embodiment of the present invention.

FIG. 6 is a time chart for explaining the operation of one embodiment of the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 door switch (door open / closed state detecting means) 2 oil pressure switch (engine operating state detecting means) 5 vehicle interior light 6 key switch 7 door 10 vehicle interior light control unit 11 CPU 12 vehicle interior light drive circuit 13 light reduction control means 14 Vehicle light forced off control means

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 59-172648 (JP, U) JP-A 1-138837 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B60Q 3/02

Claims (2)

(57) [Claims] 1. A door opening detecting a door opening / closing state of a vehicle.
The open state of the door is detected by the closed state detection means.
While the vehicle is on, the cabin light is turned on and the door
The door is shifted from the open state to the closed state by the state detection means
When it is detected that the vehicle has been
The room light is turned on, and after the lapse of the predetermined time, the cabin
The vehicle lighting control device for turning off the lights, the engine operating condition detecting means for detecting an operating condition of the mounting of the engine in the vehicle is provided, by the door state detecting means, the door from the open state to the closed state Migration is detected and the engine
The operating state of the engine is actually detected by the moving state detecting means.
Is detected , vehicle interior light forcibly turning off the vehicle interior light is provided even if the predetermined time has not passed since that time, and a vehicle illumination forcibly turning off control means is provided. Control device. 2. The vehicle lighting control device according to claim 1, wherein said engine operating state detecting means is configured as an oil pressure switch for judging a rotation stop state of the engine.