JP3252631B2 - Vehicle interior 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 an interior lighting device for a vehicle, that is, a device for controlling the turning on and off of a so-called room lamp (vehicle interior light).

[0002]

2. Description of the Related Art Conventionally, a general lighting control of a vehicle interior light is such that a vehicle interior light is turned on when a vehicle door is open and turned off when the vehicle door is closed. However, if the vehicle door is turned off at the same time as closing the door, the interior of the vehicle may be dark at the start of boarding at night (when the user gets into the vehicle), which may cause inconvenience to various operations. Therefore, a vehicle interior lighting control device has been proposed in which vehicle interior lighting is continuously operated by a timer device for a certain period of time by using a door opening / closing operation as a trigger, thereby improving convenience at the time of starting boarding at night. However, in such a vehicle interior lighting control device, the timer device is also activated by temporary opening and closing of a door while riding, such as when a part of a plurality of occupants goes outside in a stopped state. ,
The vehicle interior light stays on for a certain period of time. Therefore, there is a problem that the remaining occupants are troublesome, and such a situation where the inside of the car is bright and the outside of the car is dark is not preferable for privacy protection and crime prevention.

If the timer operation time is set short in order to prevent the above situation from occurring as much as possible, the original purpose of improving convenience at the start of riding at night cannot be sufficiently achieved. Conflicts arise. Therefore, if the door is opened and closed while the ING key is inserted into the key cylinder of an ignition key (hereinafter abbreviated as an ING key), if the occupant still remains in the vehicle, or A vehicle interior lighting control device that solves the above-described problem by determining that this is a case of temporary getting on and off and prohibiting a timer operation of vehicle interior lighting triggered by opening and closing of a door has been proposed. I have.

[0004]

However, in the conventional vehicle interior lighting control device which inhibits the timer operation of the interior lighting of the vehicle as described above, the IGN key cylinder is used when the driver opens the door at the start of boarding. It is impossible to distinguish between the case where the door is tightened after inserting the ING key into the vehicle and the case where the occupant is still left in the vehicle or the vehicle is temporarily getting on and off while riding. If the ING key is inserted, the timer operation of the vehicle interior lighting is uniformly prohibited. Therefore, with the door open at the start of boarding, the ING key cylinder
The timer operation is also prohibited in the case of a normal boarding start behavior of the driver who inserts the key and then closes the door, so that the convenience at the start of boarding, which is the primary function of this device, is improved. There was a problem that it may not be possible.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and a function of improving convenience at the start of normal driver's boarding is ensured. It is an object of the present invention to provide a vehicle interior lighting control device that can surely prohibit a part.

[0006]

In order to achieve the above object, the present invention is configured as follows. That is, in a vehicle interior lighting control device that turns on a vehicle interior light when the vehicle door is open and turns off the light when the vehicle door is closed, a door open / close detection unit that detects opening and closing of the vehicle door, and whether an ignition key is inserted. Key insertion state detecting means for detecting the vehicle door, based on the detection results of the door opening / closing detection means and the key insertion state detecting means, when the vehicle door is closed after being opened for a predetermined time from the time when the vehicle door is closed. It has a timer function to keep the vehicle interior light on, and if the ignition key is inserted at the time of opening and closing the vehicle door, it is determined whether the ignition key is inserted at the time of opening the vehicle door If it is not inserted in the open state, the above timer function is disabled.If it is inserted in the open state and the ignition key If not plugged in and is provided with a control means for operating the timer function. Note that the above configuration corresponds to, for example, an embodiment of FIG. 1 described later, and the above respective units correspond to, for example, the following portions of FIG. That is, the door opening / closing detecting means corresponds to the door switch 1, the key insertion state detecting means corresponds to the key switch 2, the vehicle interior light corresponds to the vehicle interior light 3, and the control means corresponds to the vehicle interior light control device 4, respectively.

[0007]

As described above, in the present invention, when the act of inserting the ING key is performed when the door is closed, that is, when the door is opened with the ING key inserted, The timer is not operated because it is determined that the door is temporarily opened and closed while the user is riding. Therefore, in this case, the vehicle interior light is turned off at the same time when the door is closed. Also, when the ING key is inserted while the door is opened, or when the ING key is not inserted, that is, after the door is opened and the vehicle is boarded, the ING key is inserted.
If the key is inserted, or if the ING key has not been inserted yet after boarding, it is determined that this is a normal operation at the start of boarding, and the timer is operated. Therefore, in this case, the vehicle interior light continues to light for a predetermined time after the door is closed. As described above, it is determined whether the vehicle is in the normal boarding start state or the temporary door opening / closing state during boarding according to the door opening / closing state and the time when the ING key is inserted. By operating the timer function and prohibiting the timer function in the case of temporary opening and closing of the door while riding, the convenience improvement function at the start of normal driver boarding is secured, In addition, unnecessary portions of the lighting timer operation can be reliably prohibited.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a circuit diagram showing a configuration of one embodiment of the present invention, and FIG. 2 is a flowchart showing a calculation process in a vehicle interior light control device 4. First, in FIG. 1, reference numeral 1 denotes a door switch which is turned on when the door is open and grounded, and turned off and opened when the door is closed. Reference numeral 2 denotes a key switch of the IGN key cylinder, which is turned on in a key insertion state and connected to + B (+ side of the vehicle-mounted battery), and turned off and opened in a keyless state. Reference numeral 3 denotes a vehicle interior light, which is turned on when the door switch 1 is turned on. Reference numeral 4 denotes a vehicle interior light control device, which receives the ON / OFF state of the door switch 1 and the key switch 2 as a signal and controls the blinking of the vehicle interior light 3. The vehicle interior light control device 4 includes a CPU 5 and a vehicle interior light drive unit 6. The CPU 5 controls the door switch 1 and the key switch 2 input to the vehicle interior light control device 4.
Is performed based on the state of the vehicle, and the blinking of the vehicle interior light 3 is controlled by controlling the vehicle interior light drive unit 6 according to the result.

As can be seen from the circuit of FIG.
Means that when the door switch 1 is on (the door is open),
It always lights up regardless of other conditions, and also turns on when the vehicle interior light drive unit 6 is on. Then, the CPU 5 detects the opening and closing of the vehicle door from the ON / OFF of the door switch 1,
When the vehicle door is closed after being opened, it has a timer function to turn on the vehicle interior light drive unit 6 for a predetermined time from the time when the vehicle door is closed to continue the lighting state of the vehicle interior light 3. . However, as will be described in detail later, the operation of this timer function can be prohibited according to conditions. In consideration of saving power consumption, the power supply of the CPU 5 is turned on when the door switch 1 is turned on, and a predetermined time (time for operating the timer function) has elapsed since the door switch 1 was turned off. It may be turned off later, but if a device with extremely low power consumption such as a custom IC is used, it may be turned on at all times.

Next, the operation of the vehicle interior light control device 4 will be described with reference to the flowchart of FIG. In addition,
In FIG. 2, Y represents YES and N represents NO. First, in step S1, it is determined whether or not the door is closed (the door switch 1 is off). If NO in step S1, that is, if it is determined that the door is opened (switch 1 is on), the timer operation history is deleted in step S7, the timer operation is stopped in step S6, and the process proceeds to step S1. Return. In this case, since the door switch 1 is on, the vehicle interior light 3 is turned on. on the other hand,
If YES in step S1, that is, if the door has been closed, it is determined in step S2 whether there is a history of timer operation already completed. If there is a history, the flow returns to step S1 as it is, and there is no history. For example, in step S3, it is determined whether or not the vehicle interior light is turned on by the timer operation.
If YES in step S3, that is, if the timer is operating, it is determined in step S4 whether the timer operation has passed a predetermined time. If it has elapsed, a history of the completion of the timer operation is added in step 5, and the timer operation is stopped (terminated) in step S6, and the process returns to step S1. If not, the process returns to step S1.

On the other hand, if it is determined in step S3 that the timer is not operating, it is determined in step S8 whether the key is inserted into the IGN key cylinder (key switch 2 is on). If YES in step S8,
That is, in the case of the key insertion state, step S9
Then, it is determined whether or not the key insertion at the time of this door opening / closing operation has been performed when the door is open (switch 1 is on). This determination is made based on the ON / OFF timing of the door switch 1 and the ON / OFF timing of the key switch 2. That is, when the key switch 2 is turned on while the door switch 1 is on,
It is determined that the key insertion has been performed when the door is open. If YES in step S9, that is, if the key insertion operation is performed while the door is open, it is determined that the operation is a normal operation at the start of boarding, and the timer operation is started in step S10. Starts and the time when the door is closed (the flow is determined in steps S1, S2, S
The vehicle interior light driving unit 6 is controlled so that the vehicle interior light 3 is turned on for a predetermined time determined in step S4 from the time when the vehicle interior light passes through the routes of S3, S8, and S10).

On the other hand, if NO in step S9, that is, if the key insertion operation is not performed while the door is open, it is determined that the door is temporarily opened and closed while the vehicle is being ridden, and the vehicle is activated by the timer. The process returns to step S1 without turning on the interior light 3. Therefore, in this case, the vehicle interior light 3 is turned off at the same time when the door is closed. If NO in step S8, that is, if the key is not inserted into the IGN key cylinder (key switch 2 is off), it is determined that the operation is a normal start of boarding, and step S10 is performed. After the timer operation is started, the process returns to step S1.

The lighting state of the vehicle interior light 3 under the above control is summarized as follows. When the door is open, the vehicle interior light 3 is always turned on. When the act of inserting the ING key is performed when the door is closed, that is, when the door is opened with the ING key inserted, it is determined that the door is temporarily opened and closed while riding. Do not run the timer. Therefore, in this case, the door is closed and
Turns off. When the ING key is inserted while the door is opened, or when the ING key is not inserted, that is, when the ING key is inserted after the door is opened and the user gets on the vehicle, or when the ING key is still on after getting on the vehicle. If the key is not inserted, it is determined that the operation is a normal operation at the start of boarding, and the timer is operated. Therefore, in this case, the vehicle interior light 3 is kept on for a predetermined time after the door is closed.

[0014]

As described above, according to the present invention, depending on the opening / closing state of the door and the timing at which the ING key is inserted, it is possible to determine whether the vehicle is in a normal boarding start state or a temporary door opening / closing state during boarding. Judgment is made to activate the timer function in the case of normal boarding start state, and to prohibit the timer function in the case of temporary opening / closing of the door during boarding. This has the effect that the convenience improvement function at the time can be ensured, and unnecessary portions of the lighting timer operation can be reliably prohibited.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of one embodiment of the present invention.

FIG. 2 is a flowchart showing the content of a calculation process in the indoor lighting control device 4 in the embodiment of FIG.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 door switch 4 interior lighting control device 2 key switch 5 CPU 3 interior light 6 interior light drive unit

Claims (1)

(57) [Claims] An interior lighting control device for a vehicle, which turns on a vehicle interior light when a vehicle door is open and turns off the light when the vehicle door is closed, includes a door opening / closing detecting means for detecting opening / closing of the vehicle door, and an ignition key inserted therein. Key insertion state detection means for detecting whether or not the vehicle door is closed after the vehicle door is opened based on the detection results of the door open / close detection means and the key insertion state detection means. Has a timer function to continue the lighting state of the vehicle interior light for a predetermined time,
And, when the ignition key is inserted when the vehicle door is opened and closed, it is determined whether or not the ignition key is inserted when the vehicle door is open. Control means for prohibiting the function and activating the timer function when the ignition key is inserted in the open state and when the ignition key is not inserted.