JP2002002374A - Vehicular lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular lighting system for visually confirming the inside of a car before getting on the car even when a room lamp is set in a door interlocking mode. SOLUTION: A lighting mode of the room lamp 43 arranged in the cabin is detected by a room lamp SW detecting circuit 47, and when the room lamp 43 is set in the door interlocking mode in the case of receiving an unlocking signal from the outside of the cabin, a spot lamp 53 arranged in the cabin is lighted for a prescribed time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular lighting system that allows the user to visually check the inside of a vehicle before getting on the vehicle.

[0002]

2. Description of the Related Art Heretofore, as a vehicle lighting device, a room lamp is turned on when an open state of a door is detected by a door switch provided on a door of the vehicle, or the lighting device is carried by a driver. It is known that a room lamp is turned on when a door unlock signal is received from a keyless transmitter, and each of them has an advantage that the inside of a vehicle can be visually recognized before boarding.

[0003]

Generally, a position switch which can set an ON mode, a door interlocking mode, and an OFF mode is connected to the room lamp.
In particular, the door interlocking mode is a mode in which the room lamp is set to be turned on only when the door is open.

[0004] Therefore, in order to selectively light a spot lamp during operation of the keyless transmitter, it is necessary to provide a dedicated switch, for example, for the spot lamp.

Further, if it is attempted to control the lighting of the spot lamp during the operation of the keyless transmitter in accordance with the switch state of the room lamp, when the room lamp is lit, it is determined whether the switch of the room lamp is in the ON mode or the door. There is a problem that the lighting control of the spot lamp cannot be performed because it is not known whether the mode is the interlocking mode.

Further, when locking with the keyless transmitter, the driver is away from the vehicle, and there is no need to turn on the room lamp or spot lamp.
When considering power saving such as a burden on a battery, there is a problem that wasteful power is used.

[0007] The present invention has been made in view of the above,
An object of the present invention is to provide a vehicular lighting device that allows the interior of a vehicle to be visually recognized before boarding even when a room lamp is set to a door interlocking mode.

[0008]

According to the first aspect of the present invention,
In order to solve the above problem, a keyless entry system that locks and unlocks a door provided in a vehicle when a locking signal or an unlocking signal is received from the outside of a vehicle is provided, and a lighting mode of a room lamp provided in the vehicle is detected. A lighting mode detecting means, and a spot lamp lighting means for lighting a spot lamp provided in the vehicle for a predetermined time when the room lamp is set to the door interlocking mode when the unlock signal is received. The gist is that

According to a second aspect of the present invention, in order to solve the above-mentioned problem, when the unlock signal is received, the room lamp lighting detecting means for detecting whether or not the room lamp is lighting, and the spot lamp comprises: Spot lamp lighting detection means for detecting whether the lighting is on or not, wherein the spot lamp lighting means returns the lighting time of the spot lamp to the initial state when the room lamp and the spot lamp are lighting at the time of unlocking. To be lit.

According to a third aspect of the present invention, in order to solve the above-mentioned problem, the invention is characterized in that a light-off means for turning off the spot lamp when the lock signal is received is provided.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 shows a transmission to which a vehicle to which a vehicle lighting device according to an embodiment of the present invention is applied is part of a keyless entry system and is carried by a driver. FIG. 2 is a diagram showing a configuration of a device 11.

As shown in FIG. 1, an input circuit 17 of the transmitter 11 has a lock SW 13 for locking a door provided on the vehicle and an unlock SW 1 for unlocking the door.
5 is connected, and when one of the switches is pressed, an ON signal is output from the input circuit 17 to the control unit 19. The control unit 19 reads an ID code registered in advance from the storage unit 21 in response to the ON signal from the input circuit 17 and transmits the ID code, the lock signal or the unlock signal to the high frequency unit 2.
Output to 3. The high frequency section 23 adds the input signal to a radio wave of a predetermined frequency, modulates the signal, and transmits the modulated signal from the antenna 25.

Next, FIG. 2 shows a configuration of a receiver 31 mounted on a vehicle which forms part of a keyless entry system for a vehicle to which a vehicle lighting device according to an embodiment of the present invention is applied. FIG.

As shown in FIG. 2, the control unit 3 of the receiver 31
A high frequency receiving circuit 35 is connected to 7 for receiving a radio wave from the transmitter 11 carried by the driver via the antenna 33 and demodulating it into a signal. The input terminal of the control unit 37 includes a door SW 39 for detecting an open / closed state of a door provided in the vehicle, and a storage unit that outputs a pre-registered ID code in response to reading from the control unit 37. 41
And a room lamp SW detection circuit 47 for detecting the operation position of the room lamp position SW 45 connected to the room lamp 43 when the room lamp 43 is not operating.

The output terminal of the control unit 37 has a room for driving the room lamp 43 on and off according to a control signal and for turning on and off the key illumination 49 when the operation position of the room lamp position SW 45 is the door interlocking position. A lamp output circuit 51 and a spot lamp output circuit 5 for driving the spot lamp 53 on and off according to a control signal when the operation position of the spot lamp SW 55 is the on position.
7, a buzzer output circuit 61 for driving a buzzer 59 on and off according to a control signal, a turn lamp output circuit 65 for driving a turn lamp 63 on and off according to a control signal,
An actuator output circuit 69 that drives the door lock actuator 67 on and off according to a control signal is connected.

The control unit 37 includes a RAM (not shown) for storing control data and control flags, a ROM (not shown) for storing a control program, and a CPU (FIG. 1) for controlling the system according to the control program. (Not shown), and counts a set time to generate an interrupt signal INT and
And a timer 71 for outputting to U.

In the above-described room lamp SW detection circuit 47, a pull-down resistor is connected to an input terminal connected to the room lamp position SW 45, and an output terminal of the room lamp output circuit 51 is in an open collector state (non-operating state). ), The room lamp position SW
45 is set to door interlocking mode or other ON
Mode or OFF mode can be detected.

Next, the operation of the vehicle lighting device according to one embodiment of the present invention will be described with reference to flowcharts shown in FIGS. 3 and 4 and timing charts shown in FIGS.

First, the operation of the transmitter 11 carried by the driver will be described.

When one of the lock SW 13 and the unlock SW 15 provided on the transmitter 11 is pressed by the driver, an ON signal is output from the input circuit 17 to the control unit 19. The control unit 19 reads a pre-registered ID code from the storage unit 21 in response to the ON signal, and sequentially outputs the ID code, the lock signal, or the unlock signal to the high frequency unit 23. In the high frequency section 23, the input signal is added to a radio wave of a predetermined frequency and modulated, and
Send from.

As a result, the receiver 31 provided on the vehicle side
When the driver is in the sensing area of, the transmission signal transmitted from the transmitter 11 is received by the receiver 31.

(1) With reference to FIG. 5, a description will be given of a lock function when an ID code is received when at least one of the room lamp, the key illumination, and the spot lamp is on.

First, in step S10, a door state is read from the door SW 39 provided on the door of the vehicle, and it is determined whether or not the door is in an on state in which the door is opened.

If the door is closed, the process proceeds to step S20, where the information received by the high-frequency receiving circuit 35 is read, and it is determined whether or not the ID code has been received.

Here, if the ID code is received, the process proceeds to step S30, where the normal ID code registered in advance in the storage unit 41 is read, and whether the received ID code matches the normal ID code is determined. To compare.

Here, if the ID code received by the high-frequency receiving circuit 35 matches the regular ID code, at step S40, the switch pressed on the transmitter 11 by the information received next to the ID code. Judge.

Here, when the lock switch 13 provided on the transmitter 11 is pressed by the driver and the locking signal is received, the process proceeds to step S50, where the locking signal is output to the actuator output circuit 69, and the actuator 67 is operated. Drive to lock the door.

In step S60, an ON control signal is output to the turn lamp output circuit 65, and the turn lamp 63 is turned on and off once. Then, in step S70,
An ON control signal is output to the buzzer output circuit 65, and the buzzer 5
Make 9 sound. Then, in step S80, when any of the room lamp 43, the key illumination 49, and the spot lamp 53 is lit, an off control signal is output to each output circuit, and the room lamp 43, the key illumination 49, and the spot lamp 53 are output. Turn off 53 immediately.

As described above, when the locking signal is received from outside the vehicle, the spot lamp is turned off, so that useless lighting when the vehicle is empty can be prevented.

(2) With reference to FIG. 6, an unlock function when an ID code is received will be described.

In step S40, the switch pressed by the transmitter 11 is determined based on the information received after the ID code, and the unlock switch 15 provided on the transmitter 11 is pressed by the driver to unlock the transmitter. If a signal has been received, the process proceeds to step S110, where an unlock signal is output to the actuator output circuit 69, and the actuator 6
Drive 7 to unlock the door.

In step S120, an ON control signal is output to the turn lamp output circuit 65, and the turn lamp 63 is caused to blink twice. Then, in step S130, an ON control signal is output to the buzzer output circuit 65, and the buzzer 59 is sounded.

Here, in step S140, a room lamp flag (hereinafter, referred to as an RL flag) indicating whether the room lamp 43 is on or off is stored in the RAM.
And determines whether or not the RL flag is set to 1 and the room lamp 43 is lit.

If the room lamp 43 is not turned on, the process proceeds to step S150, where the room lamp SW is turned on.
The operation position information of the room lamp position SW 45 is read from the detection circuit 47, and the state of the contact of the room lamp position SW 45 is determined based on the operation position information.

Here, if the room lamp SW detection circuit 47 detects the Hi state and is set in the door interlock mode, the process proceeds to step S160, in which the SL flag and the room lamp position SW 45 are set in the door interlock mode. Is set to 1 and stored in a RAM.

In step S170, an ON control signal is output to the spot lamp output circuit 57 to turn on the spot lamp 53, and the time counted by the timer 71 is set to, for example, 15 seconds.

In step S210, the RL flag is set to 1 and stored in the RAM. Then, in step S220, the ON control signal is output to the room lamp output circuit 5
1 to turn on the room lamp 43 and the key illumination 49, and set the time counted by the timer 71 to, for example, 15 seconds.

As a result, as shown in FIG. 6, the room lamp 43, the key illumination 49, and the spot lamp
The light is turned on for 5 seconds and then turned off after a lapse of, for example, 5 seconds of afterglow time.

As described above, the lighting mode of the room lamp provided inside the vehicle is detected, and when an unlock signal is received from outside the vehicle, when the room lamp is set to the door interlocking mode, By illuminating the room lamp provided inside the vehicle for a predetermined time, even when the room lamp is set to the door interlocking mode, the inside of the vehicle can be visually recognized before boarding.

The lighting mode of the room lamp provided inside the vehicle is detected, and when an unlocking signal is received from outside the vehicle, when the room lamp is set to the door interlocking mode, the interior of the vehicle is not detected. By illuminating the provided spot lamp for a predetermined time, even when the room lamp is set to the door interlocking mode, it is possible to visually check the inside of the vehicle before boarding.

As a result, even when the vehicle is parked in a place where there is no illumination such as a streetlight at night, the passenger compartment can be easily visually recognized before getting on the vehicle.

The timer 71 provided in the control unit 37
Generates an interrupt signal INT at the set time and requests an interrupt process to the CPU. When the CPU accepts the interrupt signal INT, FIGS. 4A and 4B
Is started.

When the interrupt signal INT is input at the end of the output of the room lamp, an off control signal is output to the room lamp output circuit 51 and the room lamp 43 is turned off in step S510. The room lamp output circuit 5
1 turns off the room lamp 43 after elapse of, for example, 5 seconds as the afterglow time. Then, in step S520, the RL flag is cleared to 0 and stored in the RAM, and the process returns to the processing step before the interruption.

When the interrupt signal INT is input at the end of the spot lamp output, the same interrupt processing is performed, and the description thereof will be omitted.

(3) Referring to FIG. 7, a description will be given of a case where the operation position of the room lamp position SW 45 is the ON position or the OFF position in the unlock function when the ID code is received.

In step S150, the operation position information of the room lamp position SW45 is read from the room lamp SW detection circuit 47, and the state of the contact of the room lamp position SW45 is determined based on the operation position information.

Here, if the low state is detected from the room lamp SW detection circuit 47 and the mode is set to the OFF mode or the ON mode, the process proceeds to step S180, where R
The LSW flag is cleared to 0 and stored in the RAM.

In step S210, the RL flag is set to 1 and stored in the RAM. Then, in step S220, the ON control signal is output to the room lamp output circuit 5
1 to turn on the room lamp 43 and the key illumination 49, and set the time counted by the timer 71 to, for example, 15 seconds.

As a result, as shown in FIG. 7, the room lamp 43 and the key illumination 49 are turned on for, for example, 15 seconds, and then turned off after a lapse of, for example, 5 seconds of afterglow time.

(4) With reference to FIG. 8, a description will be given of a case where the operation position of the room lamp position SW 45 is undefined in the unlock function when the ID code is received.

In step S140 described above, RA
The RL flag is read from M, and it is determined whether the RL flag is set to 1 and the room lamp 43 is on.

When the room lamp 43 is on, the operating position of the room lamp position SW 45 cannot be detected using the room lamp SW detection circuit 47 for the above-described reason.

Then, the process proceeds to step S200, where the RAM
The RLSW flag stored in the RLSW flag is read, and it is determined whether or not the spot lamp 53 was turned on at the last unlocking by determining whether the RLSW flag is set to 1 in the previous processing flow (tA). Judge.

If the spot lamp 53 is turned on at the time of the previous unlocking, the process proceeds to step S160.
An SL flag and a room lamp SW flag (hereinafter, referred to as an RLSW flag) indicating that the room lamp position SW 45 is set in the door interlock mode are set to 1 and stored in the RAM.

In step S170, an ON control signal is output to the spot lamp output circuit 57 to turn on the spot lamp 53, and the time counted by the timer 71 is set to, for example, 15 seconds.

On the other hand, if the spot lamp 53 is not turned on at the time of the previous unlocking in step S200, the process proceeds to step S210, where the RL flag is set to 1 and stored in the RAM. Then, in step S220, an ON control signal is output to the room lamp output circuit 51 to turn on the room lamp 43 and the key illumination 49, and the time counted by the timer 71 is set to, for example, 15 seconds.

As a result, as shown in FIG. 8, the room lamp 43, the key illumination 49, and the spot lamp 53 are shifted at the time tB.
From 15 seconds on, and then off after a lapse of, for example, 5 seconds of afterglow time.

As described above, when an unlock signal is received from outside the vehicle, it is detected whether the room lamp is lit, and further, it is detected whether the spot lamp is lit. Here, when the room lamp and the spot lamp are lit at the time of unlocking, the lighting time of the spot lamp is returned to the initial state and lit,
Even in the case of unlocking after locking once, the lighting time of the spot lamp can be secured.

(5) Referring to FIG. 9, the processing when the spot lamp is turned off when the door is open and the spot lamp 53 is off will be described.

In step S10 described above, if the door is open, the process proceeds to step S310, where the SL flag is read from the RAM, and it is determined whether or not the spot lamp 53 is lit based on whether or not the SL flag is set to 1. I do.

If the spot lamp 53 is not on, the process proceeds to step S340, and the RL flag is set to 1
And store it in the RAM. Then, step S35
At 0, an ON control signal is output to the room lamp output circuit 51 to turn on the room lamp 43 and the key illumination 49, and the time measured by the timer 71 is set to, for example, 3 seconds.

As a result, as shown in FIG. 9, the room lamp 43 and the key illumination 49 are turned on for 3 seconds, for example, and then turned off after an afterglow time of 5 seconds, for example.

(6) Referring to FIG. 10, when the door is open and the spot lamp 53 is off,
The processing when the spot lamp is turned on and off will be described.

If the spot lamp 53 is being lit in the determination processing in step S310, the process proceeds to step S320, where the SL flag is set to 1 and stored in the RAM.

Then, in step S330, an ON control signal is output to the spot lamp output circuit 57 to turn on the spot lamp 53, and the time counted by the timer 71 is set to, for example, 3 seconds.

Then, in step S340, the RL flag is set to 1 and stored in the RAM. Then, in step S350, the ON control signal is output to the room lamp output circuit 5
1 to turn on the room lamp 43 and the key illumination 49, and set the time counted by the timer 71 to, for example, 3 seconds.

As a result, as shown in FIG. 10, the room lamp 43, the key lamp 49, and the spot lamp 53 are turned on for, for example, 3 seconds, and then turned off after a lapse of, for example, 5 seconds.

As described above, it is determined whether or not the door provided on the vehicle is open, and whether or not the spot lamp is lit is detected.
Here, when the spot lamp is on when the door is open, the room lamp is turned on, so that the illuminance at the time of getting on or off the vehicle can be made brighter by turning on the spot lamp and the room lamp.

(7) Referring to FIG. 11, in the unlock function when the ID code is received, the room lamp,
The case where the key illumination and the spot lamp are turned on will be described.

In step S140 described above, RA
The RL flag is read from M, and it is determined whether the RL flag is set to 1 and the room lamp 43 is on.

When the room lamp 43 is on, the operating position of the room lamp position SW 45 cannot be detected using the room lamp SW detection circuit 47. Therefore, the process proceeds to step S200, where the previous processing flow (t
In A), the RLSW flag stored in the RAM is read, and it is determined whether or not the spot lamp 53 has been turned on at the time of the previous unlocking by determining whether or not the RLSW flag is set to 1 in the door interlock mode.

If the spot lamp 53 is turned on at the time of the previous unlocking, the process proceeds to step S160.
An SL flag and a room lamp SW flag (hereinafter, referred to as an RLSW flag) indicating that the room lamp position SW 45 is set in the door interlock mode are set to 1 and stored in the RAM.

Then, in step S170, an ON control signal is output to the spot lamp output circuit 57 to turn on the spot lamp 53, and the time counted by the timer 71 is set to, for example, 15 seconds.

On the other hand, if the spot lamp 53 is not turned on at the time of the previous unlocking in step S200, the process proceeds to step S210, where the RL flag is set to 1 and stored in the RAM. Then, in step S220, an ON control signal is output to the room lamp output circuit 51 to turn on the room lamp 43 and the key illumination 49, and the time counted by the timer 71 is set to, for example, 15 seconds.

As a result, as shown in FIG. 11, the room lamp 43, the key illumination 49, and the spot lamp 53 are continuously lit, for example, for 15 seconds, and then extinguished after a lapse of, for example, 5 seconds of afterglow time.

[0077]

According to the first aspect of the present invention, the lighting mode of the room lamp provided inside the vehicle is detected, and when the unlock signal is received from outside the vehicle, the room lamp is turned on. When the interlocking mode is set, the spot lamp provided in the vehicle is turned on for a predetermined time, so that even when the room lamp is set to the door interlocking mode, the inside of the vehicle can be visually recognized before getting on.

According to the second aspect of the present invention, when an unlock signal is received from outside the vehicle, it is determined whether or not the room lamp is being lit. Whether to detect it.
Here, when the room lamp and the spot lamp are lit at the time of unlocking, the lighting time of the spot lamp is returned to the initial state, and the spot lamp is lit. Lighting time can be secured.

According to the third aspect of the present invention, when a locking signal is received from outside the vehicle, the spot lamp is turned off, thereby preventing unnecessary lighting when the vehicle is empty.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a transmitter 11 carried by a driver.

FIG. 2 is a diagram showing a configuration of a receiver 31 that forms a part of a keyless entry system and is mounted on a vehicle to which a vehicle lighting device according to an embodiment of the present invention is applied.

FIG. 3 is a flowchart for explaining the operation of the vehicle lighting device according to one embodiment of the present invention.

FIG. 4 is a flowchart showing interrupt processing by a timer.

FIG. 5 is a timing chart for explaining a lock function when an ID code is received when at least one of a room lamp, a key lamp, and a spot lamp is turned on.

FIG. 6 is a timing chart for explaining an unlock function when an ID code is received.

FIG. 7 is a timing chart for explaining a case where the operation position of the room lamp position SW 45 is an ON position or an OFF position in an unlock function when an ID code is received.

FIG. 8 is a timing chart for explaining a case where the operation position of the room lamp position SW45 is indeterminate in the unlock function when an ID code is received.

FIG. 9 is a timing chart for explaining a process when the spot lamp is turned off when the door is open and the spot lamp 53 is off.

FIG. 10 is a timing chart for explaining a process when the spot lamp is turned on and off when the door is open and the spot lamp 53 is off.

FIG. 11 is a timing chart for explaining a case where a room lamp, a key illumination, and a spot lamp are turned on in an unlock function when an ID code is received.

[Explanation of symbols]

 31 receiver 35 high-frequency receiving circuit 37 control unit 39 door SW 41 storage unit 43 room lamp 45 room lamp position SW 47 room lamp SW detection circuit 49 key illumination 51 room lamp output circuit 53 spot lamp 55 spot lamp SW 57 spot lamp output circuit 71 timer

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Hiroaki Sakakura 1-6-8 Fukuura, Kanazawa-ku, Yokohama-shi, Kanagawa F-term (reference) 3K040 AA02 DA05 DB05 DC01 GA01 GC01

Claims (3)

[Claims] 1. A lighting mode for detecting a lighting mode of a room lamp provided in a vehicle, comprising a keyless entry system for locking and unlocking a door provided in the vehicle when a locking signal or an unlocking signal is received from outside the vehicle. Detecting means, and spot lamp lighting means for turning on a spot lamp provided in the vehicle for a predetermined time when the room lamp is set to the door interlocking mode when the unlock signal is received. A lighting device for a vehicle, comprising: 2. A room lamp lighting detecting means for detecting whether the room lamp is lighting when receiving the unlocking signal, and a spot lamp lighting detecting means for detecting whether the spot lamp is lighting. 2. The spot lamp lighting unit according to claim 1, wherein when the room lamp and the spot lamp are being turned on at the time of unlocking, the spot lamp is turned on by returning the lighting time of the spot lamp to an initial state. Lighting equipment for vehicles. 3. The vehicle lighting device according to claim 1, further comprising a light-off means for turning off the spot lamp when the lock signal is received.