JP2004211539A - Electronic key system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow a holder of a portable machine to easily confirm a state of a vehicular door when controlling a locking-unlocking state of the vehicular door by bidirectional communication with the portable machine. <P>SOLUTION: Light emitting parts 6a4 to 6b4 are arranged in a door handle of the vehicular door, and the light is emitted in a mode according to a door state such as locking-unlocking. Thus, the holder of the portable machine can judge at a glance whether the vehicular door is locked or unlocked from a light emitting state of the light emitting parts 6a4 to 6d4. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

  The present invention relates to an electronic key system that controls the state of each door of a vehicle, such as locking and unlocking, based on an ID code signal transmitted from a portable device.

  2. Description of the Related Art Conventionally, based on a collation result of an ID code by two-way communication between a portable electronic key and a vehicle, the state of each door such as lock / unlock is controlled to be switched, and the holder of the electronic key is in the vehicle interior. In such a case, an electronic key system that permits release of a steering lock and start of an engine is known.

  In this electronic key system, a predetermined detection area is set inside and outside the vehicle, and an interrogation signal is transmitted from the transmitter on the vehicle side at predetermined intervals in this detection area. In this way, the approach of the holder of the electronic key to the vehicle, getting on the vehicle and getting off from the vehicle are constantly monitored.

  For example, when the holder of the electronic key approaches the vehicle to enter the vehicle and enters the detection area, the electronic key transmits an ID code to the receiver on the vehicle in response to the inquiry signal. When the ID code matches the ID code registered in advance, the door lock control device of the vehicle enters an unlock standby state for each door. In this state, when the holder of the electronic key touches the door handle, it is detected by a touch sensor or the like, and the door is unlocked.

  When the holder of the electronic key gets off the vehicle after stopping the engine of the vehicle, the detection area of the portable key moves from the vehicle interior to the vehicle exterior. In this case, for example, when a door lock switch provided near the door handle is operated, the door is locked.

  According to the above-described electronic key system, the holder of the electronic key can lock and unlock the door without holding the electronic key, thereby improving the convenience of the electronic key holder. be able to.

  However, on the other hand, the holder of the electronic key does not need to perform any operation using the electronic key when getting on and off the vehicle, so that the state of the door of the vehicle (lock, unlock, unlock standby, etc.) State) could not be easily checked. For example, if the electronic key holder approaches the vehicle and touches the door handle, the door is unlocked, but the electronic key holder is in an unlock standby state until the moment when the door handle is touched. Can not know. Further, even when the door lock switch is operated, it cannot be easily confirmed that the lock has been securely performed.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and when controlling the state of locking and unlocking a vehicle door through two-way communication with a portable device, the state of the vehicle door is controlled by the portable device. It is an object of the present invention to provide an electronic key system that a holder can easily confirm.

In order to achieve the above object, an electronic key system according to claim 1,
A transmitter for transmitting an interrogation signal to the portable device;
A receiver for receiving a code signal returned from the portable device in response to the inquiry signal,
Control means for controlling the state of the vehicle door based on the collation that the code signal satisfies a predetermined relationship with the stored signal,
A light emitting unit provided in the vehicle and emitting light in a mode according to a state of a door of the vehicle.

  As described above, the electronic key system according to the first aspect includes the light emitting unit that emits light in a manner according to the state of the vehicle door (the state of lock, unlock, and the like). For this reason, the holder of the portable device can immediately grasp the state of the vehicle door visually from the light emitting state of the light emitting means.

  According to a second aspect of the present invention, the light emitting means changes the emission color between a case where the vehicle door is locked and a case where the vehicle door is unlocked, as a light emission mode according to the state of the door. Is preferred. By changing the emission color in this way, it is possible to clearly distinguish between a case where the vehicle door is locked and a case where the vehicle door is unlocked.

The electronic key system according to claim 3, further comprising a door opening operation detecting unit that detects an opening operation of a vehicle door by a holder of the portable device,
The control means sets the state of the door of the vehicle to an unlock standby state when the holder holding the portable device approaches the vehicle and the code signal returned from the portable device is verified. In the standby state, the door is unlocked when the door opening operation is detected by the door opening operation detecting means,
The light emitting means starts light emission when the unlock standby state is established, and changes the light emission mode when the door is unlocked.

  When the door of the vehicle is locked, the light emitting means can always emit light in such a manner as to indicate that. However, in that case, the current consumption of the light emitting element increases. Therefore, as described in claim 3, it is preferable that the light emitting means starts emitting light from the unlock standby state. Furthermore, if light emission is started at the timing of the unlock standby state, when the portable device holder approaches the vehicle, the impression that the light emitting device has started emitting light as if to greet himself is held by the portable device holder. You can make it. Then, in the unlock standby state, if the light emission mode is changed when the door is actually unlocked, the locked but unlockable state (unlock standby state) is unlocked. The holder of the portable device can easily visually confirm that the state of the door has changed.

  As described in the fourth aspect, it is preferable that the light emission by the light emitting means indicating the unlocking of the door is turned off when a predetermined time has elapsed or when the engine of the vehicle is started. This is because it is considered that the door status display has already been confirmed by the holder of the portable device when the predetermined time has elapsed or the engine is started.

  In the electronic key system according to the fifth aspect, when the holder holding the portable device gets off the vehicle and closes the door, the light emitting unit emits light in a mode indicating that the door is unlocked. Starting, and thereafter, when the condition for locking the door is satisfied, the control means locks the door, and in synchronization with the locking of the door by the control means, the light emitting means locks the door. Is characterized by changing the light emission mode.

  As described above, the light emitting unit starts emitting light when the holder of the portable device gets out of the vehicle and closes the door, thereby displaying the necessary door state to the holder and reducing the current consumption. Can be reduced. Then, for example, when the door lock switch provided near the door handle is operated and the condition for locking the door is satisfied, the control means locks the door. In synchronization with this, the light emitting means changes its light emitting mode to a mode indicating lock of the door, so that the holder of the portable device can visually confirm that the door is locked.

  As described in claim 6, it is preferable that the light emission by the light emitting means indicating the lock of the door is turned off when a predetermined time has elapsed. This is for reducing the current consumption in the light emitting means.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a configuration diagram showing the overall configuration of the electronic key system according to the present embodiment. As shown in FIG. 1, the electronic key system according to the present embodiment is based on a collation result of an ID code by bidirectional communication between a portable device (electronic key) 1 and an electronic key ECU 4 which is a control device provided on the vehicle side. In addition, the electronic key ECU 4 controls the lock state of each door and the steering lock state, and further controls the permission / prohibition state of the start of the engine of the vehicle 10.

  As shown in FIG. 1, the vehicle 10 is provided with exterior transmitters 2a to 2d at doors 11 to 14 and an interior transmitter 2e in the vehicle interior. These exterior transmitters 2a to 2d and interior transmitter 2e transmit a request signal (interrogation signal) based on a transmission signal from the electronic key ECU 4. When the vehicle 10 is parked with the engine stopped and the doors 11 to 14 locked, the exterior transmitters 2a to 2d transmit request signals at predetermined intervals. The arrival distance of the request signal is set to, for example, about 0.7 to 1.0 m. Accordingly, when the vehicle 10 is parked, a detection area corresponding to the arrival distance of the request signal is formed around each of the doors 11 to 14 of the vehicle 10, and it is immediately determined that the holder of the portable device 1 has approached the vehicle 10. So that it can be detected.

  The detection area by the vehicle interior transmitter 2e is formed when the door 11 of the driver's seat is opened and closed, when the engine is started, when the door is locked by a door lock switch described later, and the like. Detect whether.

  The portable device 1 includes a transmission / reception circuit that receives a request signal from the exterior transmitters 2a to 2d or the interior transmitter 2e and outputs a predetermined ID code signal in response to the request signal. Therefore, when the portable device 1 enters the detection area, the portable device 1 immediately receives the request signal and transmits the ID code signal. The ID code signal also includes a response code indicating which of the transmitters 2a to 2d outside the vehicle and the transmitter 2e to respond to the vehicle interior.

  The receiver 3 is provided in the cabin of the vehicle 10 and receives an ID code signal transmitted from the portable device 1. The ID code signal received by the receiver 3 is output to the electronic key ECU 4 as a reception signal. The electronic key ECU 4 determines whether or not the received ID code signal satisfies a predetermined relationship such as coincidence with an ID code registered in advance (collation of the ID code).

  The doors 11 to 14 of the vehicle 10 are locked, unlocked, or locked, but the holder of the portable device 1 touches a door outside handle (hereinafter, a door handle). Door ECUs 5a to 5d are provided which can be set to an unlock standby state which can be unlocked. The door ECUs 5a to 5d operate according to an instruction signal from the electronic key ECU 4.

  That is, when the electronic key ECU 4 determines that the received ID code and the registered ID code satisfy the predetermined relationship (ID code collation OK), the electronic key ECU 4 determines the holder of the portable device 1 from the response code. Is determined. When the position of the holder of the portable device 1 is outside the vehicle, an instruction signal is given to the corresponding door ECUs 5a to 5d so that the lock of the door corresponding to the position is set to the unlock standby state. Based on this instruction signal, any one of the door ECUs 5a to 5d that has received the instruction signal sets the corresponding door 11 to 14 to the unlock standby state.

  For example, when the holder of the portable device 1 is located at a position corresponding to the door 11 of the door ECU 5a, the door ECU 5a sets the door 11 to the unlock standby state. At this time, the doors 12 to 14 corresponding to the door ECUs 5b to 5d other than the door ECU 5a remain in the locked state.

  Touch sensors 6a1 to 6d1 are provided on the door handles 6a to 6d of the doors 11 to 14 of the vehicle 10, and can detect that the holder of the portable device 1 has touched the door handles 6a to 6d. It is possible. Further, the door handles 6a to 6d are also provided with door lock switches 6a2 to 6d2 configured as push switches, and when collation of the ID code is completed, when the door lock switches 6a2 to 6d2 are operated, Each door 11 to 14 can be locked. The door handles 6a to 6d also serve as antennas for the above-described exterior transmitters 2a to 2d.

  Further, these door handles 6a to 6d are provided with light emitting portions 6a4 to 6d4 having, for example, a red LED that emits red light and a green LED that emits green light. The light emitting units 6a4 to 6d4 will be described later in detail.

  When any one of the door ECUs 5a to 5d sets the corresponding door 11 to 14 to the unlock standby state based on the instruction signal from the electronic key ECU 4, the touch sensor 6a1 to 6d1 allows the holder of the portable device 1 to operate. When it is detected that the door handles 6a to 6d have been touched, the information is transmitted to the electronic key ECU 4. Then, the electronic key ECU 4 unlocks all the doors 11 to 14. That is, when the holder of the portable device 1 performs the door opening operation for opening the door, the door is automatically unlocked.

  Specifically, when the touch on the touch sensor 6a1 provided on the door 11 is detected while the door 11 is in the unlock standby state, all the doors 11 to 14 are unlocked. When the door 11 is in the unlock standby state, the other doors 12 to 14 remain in the locked state, so that the touch sensors 6b1 to 6d1 are touched by other occupants or the like who do not hold the portable device 1. Even if it does, doors 11-14 are not unlocked.

  In addition, the detection of the door opening operation by the holder of the portable device 1 may be performed not by the touch sensors 6a1 to 6d1, but by using a detection mechanism or the like that mechanically detects that the door handles 6a to 6d are pulled toward the user. good. Further, an unlock button may be provided on the door handle, and the start of the door opening operation may be detected by operating the unlock button.

  Further, the electronic key system according to the present embodiment includes a steering lock ECU 7 and an engine ECU 8 in order to improve security of the vehicle 10. The steering lock ECU 7 and the engine ECU 8 also control turning on / off of the steering lock and switching between permission and prohibition of starting the vehicle engine based on an instruction signal from the electronic key ECU 4.

  That is, when the holder of the portable device 1 enters the vehicle 10 by opening and closing the door, the electronic key ECU 4 communicates with the portable device 1 using the vehicle interior transmitter 2 e and the receiver 3 provided in the vehicle interior. Two-way communication is performed, and the ID code is collated again. On the other hand, when the engine switch 9 provided in the vehicle is operated in advance, the electronic key ECU 4 checks whether the steering lock ECU 7 can release the steering lock. If the result of the ID code verification is OK, the electronic key ECU 4 responds to the steering lock ECU 7 to permit the release of the steering lock, and the steering lock ECU 7 releases the steering lock based on the response. Lock. At this time, the electronic key ECU 4 simultaneously outputs an instruction signal to the engine ECU 8 to cancel the prohibition of starting the engine. In this way, the holder of the portable device 1 can perform the steps from getting on by unlocking the door to starting the engine without picking up the portable device 1.

  On the other hand, after the vehicle 10 is stopped and the engine switch 9 is turned off, the holder of the portable device 1 gets off and one of the door lock switches 6a2 to 6d2 provided on the door handles 6a to 6d is operated. Is detected, the electronic key ECU 4 outputs an instruction signal to the door ECUs 5a to 5d to lock the doors 11 to 14 of the vehicle. At the same time as the door lock, the electronic key ECU 4 instructs the engine ECU 8 to set the engine to the start prohibition state.

  The lock of each of the doors 11 to 14 by the holder of the portable device 1 may be performed by other means, for example, by providing a touch sensor for door lock, instead of the door lock switches 6a2 to 6d2 described above. good.

  As described above, the electronic key system according to the present embodiment can automatically lock and unlock the door and set / cancel the security of the vehicle only by holding the portable device 1.

  Next, the light-emitting portions 6a4 to 6d4 provided on the door handles 6a to 6d relating to the characteristic portions in the present embodiment will be described. FIG. 2 is an external view schematically showing the external appearance of the door handle 6a. In addition. Since the door handles 6a to 6d are similarly configured, the door handle 6a will be described below.

  As shown in FIG. 2, the door handle 6a is provided with a door lock switch 6a2 and a light emitting unit 6a4. Since the touch sensor 6a1 and the antenna 6a3 are provided inside the door handle 6a, they are not shown in FIG. The light emitting portion 6a4 is formed to be vertically long at the end of the door handle 6a so as to have a length substantially equal to the width of the door handle 6a. As described above, the light emitting section 6a4 includes the green LED that emits green light and the red LED that emits red light. Thus, when the light emitting unit 6a4 is provided on the door handle 6a, it is easy for the holder of the portable device 1 to check the light emitting state when approaching or leaving the door of the vehicle 10.

  Next, control of the light emitting state of the light emitting units 6a4 to 6d4 by the electronic key ECU 4 and the door ECU 5a will be described with reference to FIGS. FIG. 3A shows the control of the light emitting state of the light emitting unit 6a4 and the other light emitting units 6b4 to 6d4 when the holder of the portable device 1 gets on the vehicle 10, and FIG. This shows the control of the light emitting state of the light emitting units 6a4 to 6d4 when getting off the vehicle. Hereinafter, a case where the holder of the portable device 1 approaches the door 11 will be described.

  As shown in FIG. 3A, when the vehicle 10 is parked and the doors 11 to 14 are locked, the light emitting units 6a4 to 6d4 are turned off. When the doors 11 to 14 are locked when the vehicle is parked, the light emitting units 6a4 to 6d4 can emit light in a mode indicating that the doors 11 to 14 are locked. However, in that case, the current consumption of the light emitting units 6a4 to 6d4 increases. Therefore, in the present embodiment, when the door is locked, the light emitting units 6a4 to 6d4 are turned off.

  In this state, when the holder of the portable device 1 approaches the vehicle and enters the detection area of the external transmitter 2a, the ID code is collated by the two-way communication between the portable device 1 and the electronic key ECU 4. Is performed. As a result of this collation, if the collation of the ID code is OK, the door 11 corresponding to the position of the holder of the portable device 1 is changed from the locked state to a locked but unlockable state (an unlock standby state). ). Thus, when the state of the door 11 shifts to the unlock standby state, the light emitting unit 6a4 provided on the door 11 starts flashing by flashing red. At this time, the reason for controlling the light emitting state so that the light emitting unit 6a4 blinks red is that in the unlock standby state, the door is still locked, so that red light indicating that the door is locked is emitted, Further, in order to make it possible to distinguish between the locked state and the unlock standby state, the light emitting unit 6a4 blinks in the unlock standby state.

  When the door 11 enters the unlock standby state, the other doors 12 to 14 remain in the locked state, so that the light emitting units 6b4 to 6d4 provided on the doors 12 to 14 are in the locked state. Lighting starts in red to indicate that. Thereby, an occupant who does not hold the portable device 1 and gets in from the other doors 12 to 14 can recognize that the doors 12 to 14 are still in the locked state.

  Also, when the light emitting unit 6a4 starts emitting light when the holder of the portable device 1 approaches the vehicle, the light emitting unit 6a4 starts emitting light as if welcoming the user. You can give the impression of.

  In the unlock standby state of the door 11, when the touch sensor 6a1 detects that the holder of the portable device 1 has touched the door handle 6a, the door ECU 5a unlocks the door 11, and the light emitting unit 6a4 turns green. To change the light emission state so as to light up. Thus, when the state of the door changes from the unlock standby state to the unlock state, by changing the light emitting state of the light emitting unit 6a4, the holder of the portable device 1 can determine that the door has been unlocked. It can be confirmed visually. Further, when the state of the door changes from the locked state to the unlocked state, the light emission color of the light emitting unit 6a4 is changed (from red to green). The locked state and unlocked state of the vehicle door can be clearly distinguished.

  At the same time as the door 11 is unlocked, the other doors 12 to 14 are also unlocked, and the light emitting units 6b4 to 6d4 start emitting light in green. Thereby, an occupant who does not hold the portable device 1 and tries to get in from the other doors 12 to 14 can easily know that the unlocking has been performed.

  The light emitting units 6a4 to 6d4 are turned off when a predetermined time elapses after the door of the vehicle 10 is unlocked and the light emitting unit 6a4 starts to light green, or when the engine of the vehicle 10 is started. . At that time, the holder of the portable device 1 has already boarded the vehicle 10, and it is considered that further light emission of the light emitting units 6a4 to 6d4 is unnecessary.

  When the holder of the portable device 1 approaches any one of the doors 12 to 14 other than the door 11, any one of the doors 12 to 14, which has detected the approach, operates like the above-described door 11.

  On the other hand, when the holder of the portable device 1 gets off the vehicle 10, as shown in FIG. 3B, when the engine switch 9 is turned off and the door 11 is opened and then closed, the light emitting unit 6a4 Starts flashing by flashing green to indicate that the door 11 is unlocked. As described above, the light emitting unit 6a4 starts emitting light at the time when the holder of the portable device 1 gets off the vehicle and closes the door 11, so that the light emitting unit 6a4 informs the holder of the necessary door state. The current consumption of the light emitting unit 6a4 can be reduced while performing the notification.

  Then, when the holder of the portable device 1 gets off the vehicle 10, the ID code is collated by the two-way communication between the electronic key ECU 4 and the portable device 1 via the outside transmitter 2a. If the collation is OK and the door lock switch 6a2 of the door handle 6a is operated, the state of the door 11 changes from unlocked to locked. Then, in synchronization with the locking of the door 11, the light emitting unit 6a4 changes the light emitting state from blinking green to lighting red. As described above, when the state of the door 11 changes from the unlocked state to the locked state, the light emitting state of the light emitting unit 6a4 is also changed. Therefore, the holder of the portable device 1 visually confirms that the door 11 is locked. Can be confirmed by

  Note that the light emitting unit 6a4 is turned off when a predetermined time elapses after the door 11 of the vehicle 10 is locked and the light emitting unit 6a4 starts to light up in red.

  Further, in accordance with the change in the state of the door 11 and the light emission of the light emitting unit 6a4, the states of the other doors 12 to 14 and the states of the light emitting units 6b4 to 6d4 similarly change. Thereby, other occupants who do not hold the portable device 1 can also visually check the state of the doors 12 to 14.

  As described above, in the electronic key system according to the present embodiment, the light emitting states of the light emitting units 6a4 to 6d4 are set so as to emit light in a manner corresponding to the state (lock, unlock standby, unlock) of the vehicle doors 11 to 14. Control. For this reason, the holder of the portable device 1 and other occupants can immediately grasp the states of the doors 11 to 14 of the vehicle visually from the light emitting states of the light emitting units 6a4 to 6d4.

(Modification)
In the embodiment described above, at the time of getting off, the states of all the doors 11 to 14 and the light emitting states of the light emitting units 6a4 to 6d4 are controlled in the same manner. However, the light emitting state of the light emitting units 6a4 to 6d4 may be different between the door 11 from which the holder of the portable device 1 gets off and the other doors 12 to 14.

  Specifically, as shown in FIG. 4, when the holder of the portable device 1 gets off the vehicle 10, the engine is turned off, and the door 11 is closed after being opened, via the exterior transmitters 2 a to 2 d. In addition to checking the ID code, it is checked whether or not any door 11 to 14 is near the holder of the portable device 1. Then, for example, when the holder of the portable device 1 gets off the door 11, the light emitting unit 6a4 of the door 11 blinks green to indicate that the door 11 is in the lock standby state. The lock standby state is a state where the doors 11 to 14 are unlocked but the doors 11 to 14 can be locked by operating the lock switch 6a2. In the lock standby state, all the doors 11 to 14 are locked by operating the lock switch 6a2.

  When the door 11 enters the lock standby state, the doors 12 to 14 are lit green because the door 11 is still in the unlocked state. Lighting in green is for distinguishing from the lock standby state.

  Therefore, the holder of the portable device 1 and other occupants can know the states of the doors 11 to 14 and lock all the doors 11 to 14 by operating the lock buttons 6a2 to 6d2 provided on any door. Can be easily identified.

  In the above-described embodiment, when the holder of the portable device 1 approaches the vehicle, the state of the door 11 is set to the unlock standby state, and when it is detected that the holder has touched the door handle 6a, the doors 11 to 11 are detected. 14 was unlocked. However, the doors 11 to 14 of the vehicle may be unlocked only on condition that the holder of the portable device 1 approaches the vehicle and the collation result of the ID code is OK. In this case, the light emitting unit emits light in a mode indicating that the door is locked until the ID code is verified, and emits light in a mode indicating that the door is unlocked when the ID code verification is completed. You. Similarly, when the holder of the portable device 1 gets off the vehicle, the state of each of the doors 11 to 14 may be switched from unlocked to locked only on condition that the holder is separated from the vehicle. In this case, when the holder of the portable device 1 gets off the vehicle and closes the door 11, the light emitting unit starts emitting light in a mode indicating that the unlocking is performed, and the holder emits the light of the vehicle exterior transmitter. When the vehicle deviates from the detection area, the light emission state is switched to a state indicating that the lock has been achieved.

  Further, in the above-described embodiment, three types of locks, unlock standbys, and unlocks are shown as the states of the doors 11 to 14 that the light-emitting units identify by their light-emitting states, but the light-emitting units are in other states. The light emitting state may be changed correspondingly. For example, in recent years, vehicles employing an automatic (slide) door have been increasing. In a vehicle employing such an automatic door, when the automatic door is automatically opened and closed, the light emitting section may emit light in a manner indicating the automatic opening and closing.

  Further, in the above-described embodiment, the light emitting unit is illuminated in red when the door is locked, flashes in red in the unlock standby state, and illuminates in green when unlocked, to indicate the respective states. However, the light emission color of the light emitting portion, the light emission mode such as the use of blinking and lighting, and the like are not limited to the examples described above, and various modifications can be adopted.

  In the above-described embodiment, when it is detected that the touch sensor 6a1 provided on the door 11 is touched while the door 11 is in the unlock standby state, all the doors 11 to 14 are unlocked. I am trying to be. However, another operation mode may be provided. Specifically, in a certain mode, when it is detected that the touch sensor 6a1 provided on the door 11 is touched while the door 11 is in the unlock standby state, only the corresponding door 11 is unlocked. You may do it. Also in this case, since the states of the doors 11 to 14 can be individually notified by the light emitting units 6a4 to 6d4, the holder and the occupant of the portable device 1 can easily grasp the states of the doors 11 to 14. it can.

  In addition, even at the time of locking, you may make it lock for every door 11-14. That is, in the above-described embodiment, the states of the other doors 12 to 14 and the states of the light emitting units 6b4 to 6d4 are similarly changed in accordance with the change in the state of the door 11 and the light emission of the light emitting unit 6a4. Was. However, the doors 12 to 14 and the light emitting units 6b4 to 6d4 thereof may not be changed. Also in this case, since the states of the doors 11 to 14 can be individually notified by the light emitting units 6a4 to 6d4, the holder and the occupant of the portable device 1 can easily grasp the states of the doors 11 to 14. it can.

  Further, in the above-described embodiment, the example in which the light emitting unit emits light in accordance with the state of the door of the passenger compartment door has been described. Light emission may be performed in accordance with the light emission.

  Further, in the above-described embodiment, the door state is notified by the light emitting unit. However, the present invention is not limited to this, and the door state may be notified by another device such as a sound generator. .

1 is an overall configuration diagram illustrating an overall configuration of an electronic key system according to an embodiment. It is an external view which shows the external appearance of a door handle typically. (A) is an explanatory view for explaining the contents of control of the light emitting state of the light emitting unit when the holder of the portable device gets on the vehicle, and (b) is a diagram when the holder gets off the vehicle. FIG. 7 is an explanatory diagram for describing control of the light emitting state of the light emitting unit. It is an explanatory view for explaining the contents of control of the luminescence state of a luminescence part at the time of a holder getting out of a vehicle in a modification.

Explanation of reference numerals

  DESCRIPTION OF SYMBOLS 1 ... Portable machine, 2a-2d ... Car outside transmitter, 2e ... Car interior transmitter, 3 ... Receiver, 4 ... Electronic key ECU, 5a-5d ... Door ECU, 6a-6d ... Door handle, 6a1-6d1 ... Touch sensor, 6a2 to 6d2 door lock switch, 6a3 to 6d3 antenna, 6a4 to 6d4 light emitting unit, 7 steering lock ECU, 8 engine ECU, 9 engine switch, 11 to 14 door

Claims (9)

A transmitter for transmitting an interrogation signal to the portable device;
A receiver for receiving a code signal returned from the portable device in response to the inquiry signal,
Control means for controlling the state of the vehicle door based on the collation that the code signal satisfies a predetermined relationship with the stored signal,
An electronic key system, comprising: a light-emitting unit provided in the vehicle and configured to emit light in a mode according to a state of the door.   The light emitting means changes a light emission color between a case where the door of the vehicle is locked and a case where the door is unlocked, as a light emission mode according to a state of the door. 2. The electronic key system according to 1. A door opening operation detecting unit that detects an opening operation of a door of the vehicle by a holder of the portable device,
The control unit changes the state of the door of the vehicle to an unlock standby state when a holder holding the portable device approaches the vehicle and the code signal returned from the portable device is verified. In the unlock standby state, the door is unlocked when the door opening operation is detected by the door opening operation detecting means,
3. The light emitting unit according to claim 1, wherein the light emitting unit starts emitting light when the unlock standby state is established, and changes a light emitting mode when the door is unlocked. 4. Electronic key system.   4. The electronic key system according to claim 3, wherein the light emission by the light emitting unit indicating the unlocking of the door is turned off when a predetermined time has elapsed or when a vehicle engine is started. 5. When the holder holding the portable device gets off the vehicle and closes the door, the light emitting unit starts emitting light in a mode indicating that the door is unlocked,
Thereafter, when a condition for locking the door is satisfied, the control means locks the door, and in synchronization with the locking of the door by the control means, the light emitting means locks the door. The electronic key system according to claim 1, wherein the light emission mode is changed to indicate that the electronic key is operating.   The electronic key system according to claim 5, wherein the light emission by the light emitting means indicating the lock of the door is turned off when a predetermined time has elapsed. An electronic key system used for a vehicle including a first door and a second door,
A transmitter for transmitting an interrogation signal to the portable device;
A receiver for receiving a code signal returned from the portable device in response to the inquiry signal,
Collating means for collating the code signal with a stored signal;
Determining means for determining whether the portable device is near the first door or the second door;
A control unit that controls states of the first door and the second door based on the comparison by the comparison unit and the determination by the determination unit;
A first notification unit that notifies a state of the first door;
A second notification unit for notifying a state of the second door;
An electronic key system, wherein when the states of the first door and the second door are different, the first notification unit and the second notification unit give notification in different modes.   When the determination unit determines that the portable device is present in the direction corresponding to the first door, the control unit changes the first door from the locked state to the unlock standby state, and sets the second door to the unlocked state. The door is maintained in the locked state, the first notification unit notifies that the door is in the unlock standby state in the first mode, and the second notification unit is in the locked state in the second mode. 8. The electronic key system according to claim 7, wherein a notice is given.   When the determination unit determines that the portable device is present in the direction corresponding to the first door, the control unit changes the first door from the unlocked state to the lock standby state, and sets the second door to the second state. The door is maintained in the unlocked state, the first notification unit notifies the lock standby state in the first mode, and the second notification unit unlocks the lock state in the second mode. 8. The electronic key system according to claim 7, wherein the notification is made.

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