JP2006284348A - Electronic device and receiving device of radio controlled clock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To install an antenna for receiving a standard radio wave showing the present time with a simple installation structure when loading a radio controlled clock on a vehicle, and to thereby receive surely the standard radio wave. <P>SOLUTION: This device has a constitution equipped with a clocking part 12 for clocking a time, a receiving part 13 for receiving the standard radio wave showing the present time by using the antenna 13a, and a time correction part 14 for correcting the time based on the standard radio wave received by the receiving part 13. The antenna 13a of the receiving part 13 is provided on a part projecting to a vehicle compartment space of the vehicle or a part constituted projectably. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an electronic device equipped with a radio timepiece mounted on a vehicle, and more particularly to an antenna installation structure of a radio timepiece receiver.

  In recent years, very accurate radio clocks that receive standard radio waves indicating time information of standard time created by atomic clocks and automatically correct the time have been distributed, and various technologies related to these radio clocks have been proposed. (For example, refer to Patent Documents 1 to 4 below). For example, in Japan, the standard time signal indicating the current time is generated based on the Japan Standard Time created by the National Institute of Information and Communications Technology based on multiple atomic clocks. Called from the station.

In general, an atomic clock shifts only 1 second in hundreds of thousands of years, whereas a general quartz clock shifts from 5 seconds to several minutes a year.
Therefore, it is desired to use a radio timepiece in various devices having a clock function conventionally, and an electronic device (for example, a clock in a vehicle, a car radio, a car audio, It is desirable to use a radio clock in video equipment such as televisions and video playback devices.
JP 2002-267775 A JP 2001-116864 A JP 2001-42071 A JP-A-7-198878

However, if an electronic device mounted on a vehicle is to have a function as a radio timepiece, the installation location of an antenna (antenna coil) for receiving a standard radio wave indicating the current time becomes a problem.
In other words, since the electronic device is mounted inside the vehicle, the electronic device is covered with a metal vehicle body (housing), and the reception sensitivity of the antenna is poor and it is difficult to normally receive the standard radio wave. .

  Therefore, it is conceivable to take the antenna out of the vehicle. To that end, a hole for passing the antenna must be formed in the vehicle body. For this reason, the vehicle casing must be processed to install the antenna. Therefore, the mounting work of the antenna becomes complicated and the cost increases. Moreover, it is desirable to provide an antenna in the vicinity of the receiving unit in order to normally receive the standard radio wave, and it is not realistic to place the antenna outside the vehicle.

  The present invention has been devised in view of such problems. When a radio timepiece is mounted on a vehicle, the standard radio wave is transmitted while installing an antenna for receiving a standard radio wave indicating the current time with a simple installation structure. The purpose is to ensure reception.

In order to achieve the above object, an electronic device according to the present invention is mounted on a vehicle, and includes a time measuring unit that measures time, and a receiving unit that receives a standard radio wave indicating the current time using an antenna. A time correcting unit that corrects the time based on the standard radio wave received by the receiving unit, wherein the antenna of the receiving unit protrudes from a vehicle interior space of the vehicle, or It is provided in the part comprised so that protrusion is possible (Claim 1).

In addition, it is preferable that the antenna of the receiving unit is embedded in an operation unit that protrudes from the operation surface disposed in the vehicle compartment space of the vehicle with respect to the vehicle compartment space.
Furthermore, it is preferable that the operation unit in which the antenna is embedded is configured to be detachable from the operation surface (Claim 3), and at this time, the operation unit in which the antenna is embedded is detached. It is preferable that the receiving unit receives the standard radio wave when it is detected that the operation unit is detached by the detecting unit.

  Further, it is preferable that the antenna of the receiving unit is embedded in an operation unit configured to be able to protrude from the operation surface disposed in the vehicle interior space of the vehicle with respect to the vehicle interior space. At this time, a detection unit for detecting that the operation unit in which the antenna is embedded is protruded with respect to the passenger compartment space is provided, and the detection unit detects that the operation unit is protruded. In this case, it is preferable that the receiving unit receives the standard radio wave.

In addition, it is preferable that the vehicle has a first correction instruction unit that transmits a correction instruction for the time to a driver in the passenger compartment of the vehicle.
Furthermore, it is preferable that a second correction instruction unit for transmitting the time correction instruction is provided, and when the second correction instruction unit transmits a time correction instruction, the reception unit receives the standard time. 8).

The plurality of transmissions based on own vehicle position information indicating the position of the own vehicle detected based on a GPS (Global Positioning System) signal and position information of a plurality of transmission stations that transmit the standard radio wave. A transmission station selection unit that selects one transmission station that receives the standard radio wave from the stations, and the reception unit transmits the standard radio wave transmitted from the one transmission station selected by the transmission station selection unit; Is preferably received (claim 9).

  In order to achieve the above object, a radio clock receiver according to the present invention is a radio clock receiver installed in a passenger compartment of a vehicle, and includes an antenna for receiving a standard radio wave indicating the current time. In addition, the antenna is provided in a portion protruding from the passenger compartment space (claim 10).

  As described above, according to the present invention, when the radio timepiece is mounted on the vehicle, the antenna of the receiving unit that receives the standard radio wave is configured to protrude from the vehicle compartment space or to be protruded. Therefore, even within a passenger compartment surrounded by a metal casing, the receiver can reliably receive the standard radio wave, and as a result, it is possible to reliably maintain an accurate time. In addition, it is not necessary to perform processing for installing the antenna on the vehicle casing or the like, and the antenna for receiving the standard radio wave can be installed with a simple installation structure.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[1] First Embodiment of the Present Invention First, the configuration of an electronic device as a first embodiment of the present invention will be described with reference to FIG.
In the first embodiment of the present invention and the second to fourth embodiments of the present invention described later, as shown in FIG. 2 described later, a car audio mounted on a vehicle is taken as an example of the electronic device of the present invention. I will explain it. The electronic device of the present invention is not limited to a car audio, and may be any device that is mounted at least on a vehicle.

As shown in FIG. 1, the electronic device 10 includes a display unit 11, a time measuring unit 12, a receiving unit (receiving device) 13, a time correcting unit 14, an automatic correction instruction unit (second correction instruction unit) 15, and a transmission station selection. A unit 16 and a control unit 17 are provided.
The display unit 11 displays at least time as shown in FIG. 2 described later.
The time measuring unit 12 measures the time displayed on the display unit 11 (that is, advances the time displayed on the display unit 11 by ticking the time), and includes, for example, a quartz clock.

The receiving unit 13 includes an antenna (here, an antenna coil; tuning coil) 13 a and receives a standard radio wave indicating the current time using the antenna 13 a. The automatic correction instruction unit 15 is received via the control unit 17. When there is a time adjustment instruction from, receive the standard time signal.
In Japan, for example, in Japan, standard radio waves (hereinafter simply referred to as standard radio waves) are generated based on the Japan Standard Time created by a number of atomic clocks by the National Institute of Information and Communications Technology. It is transmitted from a plurality of scattered transmission stations.

Further, when one transmitting station that receives a standard radio wave is selected by the transmitting station selection unit 16, the receiving unit 13 receives the standard radio wave transmitted from the one transmitting station.
The time correction unit 14 corrects the time displayed on the display unit 11 based on the standard radio wave received by the reception unit 13.
The automatic correction instruction unit 15 transmits a correction instruction for the time displayed on the display unit 11 to the reception unit 13 via the control unit 17.

  For example, when the automatic time correction unit 15 detects the elapse of a predetermined time after the time correction unit 14 corrects the time based on the standard radio wave received by the reception unit 13, the reception unit 13 A time correction instruction is transmitted to the receiver 13 or a time correction instruction is transmitted to the receiving unit 13 at a predetermined time set in advance (for example, at midnight every few days). In any case, it is preferable that the automatic correction instruction unit 15 transmits the time correction instruction to the reception unit 13 at midnight when the radio wave reception state is good (for example, from 10 pm to 5 am). Thus, the receiving unit 13 can receive the standard radio wave more reliably.

The transmitting station selection unit 16 includes own vehicle position information indicating the position of the own vehicle calculated based on a GPS (Global Positioning System) signal, and positions of a plurality of transmitting stations that transmit standard radio waves that are held in advance. Based on the information, one transmitting station that receives the standard radio wave is selected from a plurality of transmitting stations.
That is, the transmission station selection unit 16 is, for example, own vehicle position information indicating the position of the own vehicle detected based on a signal from a GPS satellite obtained by a car navigation device (not shown) mounted on the vehicle. Is used to select the transmitting station closest to the current position of the vehicle from the plurality of transmitting stations as one transmitting station that receives the standard radio wave.

If the vehicle does not have a car navigation device or the like, the electronic device 10 receives a signal from a GPS satellite and determines the position of the vehicle based on the signal to obtain the vehicle position information. Functions are added.
The control unit 17 controls the exchange of information and instructions among the display unit 11, the time measuring unit 12, the receiving unit 13, the time correction unit 14, the automatic correction instruction unit 15, and the transmission station selection unit 16. Is.

Here, FIGS. 2A and 2B are external views of the electronic apparatus 10. As shown in FIG. 2 (a), the electronic device (car audio) 10 is mounted on a vehicle and has a vehicle interior space (for example,
An operation surface 1 arranged on the instrument panel) is provided.
The operation surface 1 includes a CD (Compact Disc) slot 2, an MD (Mini Disc) slot 3, a rotary knob button (here, a volume knob) 4, a protruding switch 5, various operation buttons 6, and a display unit. 11 is provided.

A rotary knob button (hereinafter referred to as a volume knob) 4, a protruding switch 5, and various operation buttons 6 function as an operation unit of the electronic device 10.
The volume knob 4 is provided so as to protrude from the vehicle interior space of the vehicle, and the antenna 13a of the receiving unit 13 is embedded therein.
That is, as shown in FIG. 2B, in the electronic device 10, the volume knob 4 as the operation unit provided so that the antenna 13 a of the reception unit 13 protrudes from the operation surface 1 to the passenger compartment space. It is buried inside.

  Here, the structure of the volume knob 4 in which the antenna 13 a is embedded will be described with reference to FIG. 3. The volume knob 4 is positioned inside the operation surface 1 of the electronic apparatus 10 at a position corresponding to the volume knob 4. Is provided with a volume device 4a on the substrate to be fitted (or screwed). By rotating the volume knob 4 fitted to the volume device 4a, the knob portion 4b of the volume device 4a is rotated, and as a result, the volume is adjusted.

The volume knob 4 is provided with a cylindrical fitting portion 4c that is fitted to the knob portion 4b of the volume device 4a, and the antenna 13a is wound around the fitting portion 4c in the volume knob 4 inside. It is buried in.
That is, the antenna 13a is wound around the outer peripheral surface of the cylindrical fitting portion 4c, and the volume knob 4 is formed by molding with plastic or the like so as to cover the fitting portion 4c around which the antenna 13a is wound.

Therefore, in the electronic device 10, the antenna 13a of the receiving unit 13 that receives the standard radio wave is installed so as to protrude from the passenger compartment space.
Thus, according to the electronic device 10 as the first embodiment of the present invention, the volume knob 4 in which the antenna 13a of the receiving unit 13 that receives the standard radio wave indicating the current time protrudes from the vehicle interior space of the vehicle. Since the antenna 13a is installed so as to protrude from the passenger compartment space, the receiving unit 13 can reliably transmit the standard radio wave even in the passenger compartment space surrounded by a metal casing. Can be received.

Therefore, the time correction unit 14 corrects the time displayed on the display unit 11, so that the accurate time can always be displayed on the display unit 11.
In addition, since the antenna 13a is embedded in the volume knob 4 that is the operation unit of the electronic device 10, there is no need to perform a process for installing the antenna 13a on the vehicle casing or the like, and the antenna 13a can be installed with a simple installation structure. Can be installed.

  In addition, when adding a radio clock function to an electronic device (here, car audio) 10 mounted on a vehicle, which has a limited capacity and installation space, an antenna 13a is embedded in the volume knob 4 which is an existing operation unit. Therefore, it is not necessary to secure a new space for installing the antenna 13a. That is, as the installation place of the antenna 13a, the inside of the volume knob 4 that has been a dead space is used, so that the capacity and installation space of the electronic device 10 can be used effectively.

Furthermore, since the antenna 13a can be disposed in the vicinity of the receiving unit 13 by embedding the antenna 13a in the volume knob 4, the reception state of the standard radio wave by the receiving unit 13 can be stabilized.
In addition, since the antenna 13a is embedded in the volume knob 4, the antenna 13a is not exposed on the operation surface 1, and the aesthetic appearance of the operation surface 1 is not impaired.

Further, the automatic correction instruction unit 15 transmits a time correction instruction at a preset time or at a preset interval, and the receiving unit 13 receives the standard radio wave based on the time correction instruction and receives the time correction unit. 14 corrects the time displayed on the display unit 11, so that the accurate time can always be displayed on the display unit 11.
Further, by configuring the automatic correction instruction unit 15 to transmit a time correction instruction at midnight when the reception state of the standard radio wave is good, the reception unit 13 can receive the standard radio wave more reliably using the antenna 13a. Can do.

  Further, the transmitting station selection unit 16 selects a transmitting station that is closest to the current position of the vehicle as a transmitting station that receives the standard radio wave from among a plurality of transmitting stations that transmit the standard radio wave based on the own vehicle position information. Since the selection is made, the receiving unit 13 can receive the standard radio wave transmitted from the nearest transmitting station having a good radio wave reception state by using the antenna 13a, and can receive the standard radio wave more reliably.

[2] Second Embodiment of the Present Invention Next, the configuration of an electronic device as a second embodiment of the present invention will be described with reference to FIG. In FIG. 4, the same reference numerals as those in FIG. 1 indicate the same or substantially the same parts, and detailed description thereof is omitted here.
As shown in FIG. 4, in addition to the electronic device 10 of the first embodiment described above with reference to FIG. 1, the electronic device 10a as the second embodiment of the present invention further includes a correction instruction unit (first correction). An instruction unit) 18 and a detection unit 19 are provided.

Therefore, the control unit 17 of the electronic device 10a includes a display unit 11, a time measuring unit 12, a receiving unit 13, a time correcting unit 14, an automatic correction instruction unit 15, a transmission station selection unit 16, a correction instruction unit 18, and a detection unit 19. Control the exchange of information, instructions, etc. between each.
The correction instruction unit 18 sends a correction instruction for the time displayed on the display unit 11 to the driver in the passenger compartment of the vehicle. For example, the correction instruction unit 18 displays a message indicating that the time should be corrected on the display unit 11. Or by outputting a notification sound such as an alarm or outputting a voice message indicating that the time should be corrected.

For example, the correction instruction unit 18 transmits a time correction instruction to the driver at a predetermined time set in advance, or the display unit based on the standard radio wave received by the reception unit 13 in the previous time correction unit 14 11, when the elapse of a predetermined time set is detected after the time displayed in 11 is corrected, a time correction instruction is transmitted to the driver.
The time correction instruction transmitted from the correction instruction unit 18 is also transmitted to the reception unit 13 via the control unit 17.

The detection unit 19 detects that the volume knob 4 in which the antenna 13 a of the reception unit 13 is embedded is detached from the operation surface 1.
That is, as shown in FIG. 5, in the electronic device 10a, the volume knob 4 is configured to be detachable from the operation surface 1 to the vehicle interior space side together with the embedded antenna 13a. In FIG. 5, the same reference numerals as those described above indicate the same or substantially the same parts, and detailed description thereof is omitted here.

As shown in FIG. 5, the detector 19 includes a switch (sensor) 7 that detects that the volume knob 4 is detached from the operation surface 1.
The switch 7 is arranged inside the volume knob 4 and is configured as a push switch having a protrusion 7a as shown in FIGS. 6A and 6B. The volume knob 4 is fitted to the volume device 4a. When detached from the combined state, the protruding portion 7a that has been pressed on the rear end surface of the volume knob 4 projects to detect that the volume knob 4a is detached from the operation surface 1.

  In the electronic device 10a, when the receiving unit 13 receives the time correction instruction from the correction instructing unit 18, the receiving unit 13 does not immediately receive the standard radio wave, and then the detecting unit 19 embeds the antenna 13a of the receiving unit 13. When the removal of the volume knob 4 from the operation surface 1 is detected (that is, the driver removes the volume knob 4 in accordance with the time adjustment instruction from the correction instruction unit 18), the standard radio wave is transmitted using the antenna 13a. Receive.

That is, the receiving unit 13 does not receive the standard radio wave only when the correction instruction unit 18 transmits the time correction instruction, the correction instruction unit 18 transmits the time correction instruction, and the detection unit 19 is connected to the antenna 13a. When it is detected that the embedded volume knob 4 is detached from the operation surface 1, the standard radio wave is received using the antenna 13a.
Therefore, in the electronic device 10a, it is preferable that the correction instruction unit 18 instructs the driver to remove the volume knob 4 in which the antenna 13a is embedded from the operation surface 1, and the time correction instruction as described above is used. It is preferable to include an instruction to remove the volume knob 4 in the message. This makes the time correction instruction to the driver more appropriate.

  Furthermore, when the reception unit 13 receives the standard radio wave and the time correction by the time correction unit 14 is completed, the correction instruction unit 18 preferably notifies the driver that the time correction has been completed. , It is preferable to notify that the volume knob 4 is stored in the operation surface 1 (that is, the volume knob 4 is fitted into the volume device 4a), whereby the instruction to the driver becomes more appropriate, and the driver However, it is possible to avoid a troublesome situation for the driver who must determine whether or not the time adjustment has been completed.

The volume knob 4 detached by the driver is preferably placed in a place where the reception state of the standard radio wave is good in the passenger compartment, for example, on the dashboard (upper surface of the instrument panel) or near the window. It is preferable to be mounted.
Therefore, the antenna 13a embedded in the volume knob 4 and the receiving unit 13 are connected by an antenna wire (cable) long enough to place the volume knob 4 on, for example, a dashboard. Is preferred.

  Furthermore, it is preferable that the electronic apparatus 10a is configured to provide a placement place (placement unit; not shown) for placing the detached volume knob 4. For example, the reception state of the standard radio wave is good. Such a mounting place is provided on the dashboard (the upper surface of the instrument panel) or in the vicinity of the window, and by placing the volume knob 4 detached from the operation surface 1 on the mounting place where the driver is placed, the receiving unit 13 is connected to the standard radio wave. Can be received more reliably.

At this time, the correction instruction unit 18 includes in the message to the driver as the time correction instruction the content that the volume knob 4 in which the antenna 13a is embedded is detached from the operation surface 1 and placed at the mounting position. It is preferable that the time correction instruction to the driver is more appropriate.
As described above, according to the electronic device 10a as the second embodiment of the present invention, the same effect as that of the first embodiment described above can be obtained, and the volume knob 4 in which the antenna 13a is embedded is provided on the operation surface. 1 is configured to be detachable in the passenger compartment space, and the correction instruction unit 18 transmits a time adjustment instruction to the driver in the passenger compartment of the vehicle, so that the driver removes the volume knob 4 from the operation surface 1. By further projecting into the passenger compartment space, the receiver 13 can receive the standard radio wave more reliably.

[3] Third Embodiment of the Invention Next, an electronic device as a third embodiment of the present invention will be described. The electronic device of this embodiment differs from the electronic device of the second embodiment described above only in the installation location of the antenna 13a of the receiving unit 13. Therefore, the functional configuration of the electronic device of the present embodiment is the same as that of the electronic device 10a of the second embodiment shown in FIG.

That is, as shown in FIG. 4, the electronic device 10 b of this embodiment includes a display unit 11, a time measuring unit 12, a receiving unit 13, a time correcting unit 14, an automatic correction instructing unit 15, a transmission station selecting unit 16, and a control unit 17. The correction instruction unit 18 and the detection unit 19 are provided.
As shown in FIG. 7A, in the electronic device 10b, the antenna 13a of the receiving unit 13 is embedded in the protruding switch 5 configured to be able to protrude from the vehicle interior space of the vehicle.

  For example, as shown in FIG. 7B, when the protrusion switch 5 is pushed into the operation surface 1 from the state of being stored in the operation surface 1, a release mechanism (not shown) releases the protrusion switch 5, and the spring force Etc., as shown in FIG. 7C, it is configured to protrude from the operation surface 1 to the passenger compartment space, and functions as an operation unit in the protruded state. Further, when the protrusion switch 5 is pushed into the operation surface 1 while protruding from the operation surface 1, the protrusion switch 5 is held in the operation surface 1 by the release mechanism.

Note that the structure of the protruding switch 5 is not limited to that described above. For example, by simply pulling out the protruding switch 5 from the state shown in FIG. 7B, the state shown in FIG. It may change to.
In the electronic device 10b, the detection unit 19 is configured to detect that the protruding switch 5 in which the antenna 13a of the receiving unit 13 is embedded protrudes from the operation surface 1 with respect to the passenger compartment space. A sensor (not shown) for detecting that the protrusion switch 5 protrudes from the operation surface 1 is provided.

  When the receiving unit 13 receives the time correction instruction transmitted from the correction instructing unit 18, the protruding switch 5 in which the antenna 13 a of the receiving unit 13 is embedded is then moved from the operation surface 1 to the detection unit 19. When it is detected that the projection has protruded from the room space (that is, the driver has caused the projection switch 5 to project in accordance with the time adjustment instruction from the correction instruction unit 18), the standard radio wave is received using the antenna 13a. .

Further, in the electronic device 10b, it is preferable that the correction instructing unit 18 incorporates the content to the effect that the protruding button 5 in which the antenna 13a is embedded protrudes from the operation surface 1 in the message to the driver as the time correction instruction. This makes the time correction instruction to the driver more appropriate.
As described above, according to the electronic device 10b as the third embodiment of the present invention, the antenna 13a of the receiving unit 13 is embedded in the protruding switch 5 configured to be able to protrude with respect to the operation surface 1, and thus the first described above. The same effect as that of the second embodiment can be obtained.

[4] Fourth Embodiment of the Present Invention Next, the configuration of an electronic device according to a fourth embodiment of the present invention will be described with reference to FIG. In FIG. 8, the same reference numerals as those already described indicate the same or substantially the same parts, and thus detailed description thereof is omitted here.
As shown in FIG. 8, in addition to the electronic device 10a of the second embodiment described above with reference to FIG. 4, the electronic device 10c as the fourth embodiment of the present invention further includes a driver boarding determination unit 20 and a parking lot. A stop determination unit 21 is provided.

Therefore, the control unit 17 of the electronic device 10c includes a display unit 11, a time measuring unit 12, a receiving unit 13, a time correcting unit 14, an automatic correction instruction unit 15, a transmission station selection unit 16, a correction instruction unit 18, a detection unit 19, It controls the exchange of information and instructions between the driver boarding determination unit 20 and the parking / stopping determination unit 21.
The driver boarding determination unit 20 determines whether or not a driver is in the passenger compartment.

  Specifically, the driver boarding determination unit 20 determines, for example, that the driver is on the board if the driving switch is on based on on / off information of the driving switch (ignition switch) of the vehicle. If the driving switch is off, it is determined that the driver is not in the vehicle. The driver boarding determination unit 20 may determine whether or not the driver is in the vehicle interior using information from a sensor (for example, an infrared sensor).

The parking / stop determination unit 21 determines whether or not the vehicle is parked or stopped.
Specifically, the parking / stop determination unit 21 determines whether the vehicle is parked or not when the tire is not rotating based on information of a sensor (for example, a centrifugal force switch) that detects rotation of the tire of the vehicle, for example. It is determined that the vehicle is stopped.

  In addition to the sensor that detects the rotation of the tire, the parking / stop determination unit 21 may, for example, determine whether or not the accelerator pedal is depressed, whether or not the side brake is locked, or information on the transmission gear stage (shift stage), May determine whether the vehicle is parked or stopped based on on / off information of the engine switch or the like, or may be determined in combination.

  And in this electronic device 10c, when the correction instruction | indication part 18 determines that the driver boarding determination part 20 has boarded the driver in the vehicle interior, or the parking stop determination part 21 has parked or stopped the vehicle. When it is determined that there is, or when the driver boarding determination unit 20 determines that the driver is in the vehicle interior and the parking stop determination unit 21 determines that the vehicle is parked or parked, A time correction instruction is transmitted to the driver.

The installation structure of the antenna 13a of the receiving unit 13 of the electronic device 10c is the same as that of the second embodiment described above (see FIG. 5 above).
As described above, according to the electronic device 10c as the fourth embodiment of the present invention, the same effects as those of the second embodiment described above can be obtained, and the driver boarding determination unit 20 can get into the passenger compartment. When it is determined that the time is corrected, the correction instruction unit 18 transmits a time correction instruction. Therefore, the time correction instruction can be efficiently transmitted to the driver in the passenger compartment, and the time can be corrected more reliably. .

  Further, when the parking / stop determination unit 21 determines that the vehicle is parked or stopped, the correction instruction unit 18 transmits a time correction instruction, so that the driver who has transmitted the time correction instruction performs a time correction operation (that is, In a situation where the volume knob 4 can be removed from the operation surface 1), the correction instruction unit 18 sends a time correction instruction, and the correction instruction unit 18 efficiently sends a time correction instruction to the driver. It is possible to make a call and correct the time more reliably.

[5] Others The present invention is not limited to the above-described embodiments, and various modifications or combinations can be implemented without departing from the spirit of the present invention.
For example, in the above-described embodiment, the car audio has been described as an example of the electronic device of the present invention. However, the present invention is not limited to this, and the electronic device of the present invention is mounted on a vehicle. What is necessary is just to have the part which can protrude or can protrude with respect to vehicle interior space at least.

In the above-described embodiment, the electronic device according to the present invention has been described with an example in which the electronic device includes the display unit 11 for displaying time. However, the present invention is not limited to this, and the display unit 11 is not limited thereto. The radio clock function may be provided for its own processing.
Furthermore, in the first embodiment described above, an example in which the antenna 13a of the receiving unit 13 is embedded in the volume knob 4 has been described. However, the present invention is not limited to this, and the antenna 13a has at least an operation surface. It is only necessary to be provided in a portion protruding from the vehicle compartment space 1, and this can also provide the same effects as those of the first embodiment described above.

If the standard radio wave reception is good even in the passenger compartment due to the structure of the vehicle (particularly the housing structure), the material of the housing, the installation location of the electronic device of the present invention, etc. The antenna 13 a of the unit 13 may be provided on the surface of the operation surface 1 or may be embedded in the surface layer portion of the operation surface 1.
In the above-described second embodiment, the example in which the detection unit 19 includes the switch 7 having the protrusion 7a has been described. However, the present invention is not limited to this, and the detection unit 19 is not limited thereto. Any sensor that can detect that the volume knob 4 has been detached may be used.

It is a block diagram which shows the structure of the electronic device as 1st Embodiment of this invention. It is a figure which shows the electronic device as 1st Embodiment of this invention, (a) is the front view, (b) is the right view. It is a fragmentary sectional view for demonstrating the installation structure of the antenna of the electronic device as 1st Embodiment of this invention. It is a block diagram which shows the structure of the electronic device as 2nd, 3rd embodiment of this invention. It is a figure for demonstrating the operation surface of the electronic device as 2nd Embodiment of this invention. It is a figure for demonstrating the function of the switch which the detection part of the electronic device as 2nd Embodiment of this invention has, (a) is a perspective view which shows the state with which the volume knob was mounted | worn on the operation surface, b) is a perspective view showing a state in which the volume knob is detached from the operation surface. It is a figure which shows the electronic device as 3rd Embodiment of this invention, (a) is the front view, (b) is the left view which shows the state in which the protrusion switch provided in the operation surface was accommodated, ( c) is a left side view of a state in which a protruding switch provided on the operation surface protrudes. It is a block diagram which shows the structure of the electronic device as 4th Embodiment of this invention.

Explanation of symbols

1 Operation surface 2 CD (Compact Disc) insertion slot 3 MD (Mini Disc) insertion slot 4 Volume knob (operation section)
4a Volume device 4b Knob part 4c Fitting part 5 Protruding switch (operation part)
6 Operation part 7 Switch 7a Protrusion part 10, 10a-10c Electronic device 11 Display part 12 Timekeeping part 13 Receiving part (receiving apparatus)
13a Antenna 14 Time correction unit 15 Automatic correction instruction unit (second correction instruction unit)
16 Source station selection unit 17 Control unit 18 Correction instruction unit (first correction instruction unit)
DESCRIPTION OF SYMBOLS 19 Detection part 20 Driver boarding determination part 21 Parking stop determination part

Claims (10)

An electronic device mounted on a vehicle,
A timekeeping section that keeps time,
A receiver for receiving a standard radio wave indicating the current time using an antenna;
A time correction unit for correcting the time based on the standard radio wave received by the reception unit;
The electronic device according to claim 1, wherein the antenna of the receiving unit is provided in a portion protruding from a vehicle interior space of the vehicle or a portion configured to be able to protrude.   The electronic device according to claim 1, wherein the antenna of the receiving unit is embedded in an operation unit that protrudes from the operation surface disposed in the vehicle interior space of the vehicle with respect to the vehicle interior space. .   The electronic apparatus according to claim 2, wherein the operation unit in which the antenna is embedded is configured to be detachable from the operation surface. A detection unit for detecting that the operation unit embedded with the antenna is detached;
The electronic device according to claim 3, wherein the receiving unit receives the standard radio wave when the detecting unit detects that the operation unit is detached.   The antenna of the receiving unit is embedded in an operation unit configured to be able to project from the operation surface disposed in a vehicle compartment space of the vehicle with respect to the vehicle compartment space. The electronic device described. A detection unit for detecting that the operation unit in which the antenna is embedded protrudes from the passenger compartment space;
6. The electronic apparatus according to claim 5, wherein the receiving unit receives the standard radio wave when the detecting unit detects that the operation unit is protruded.   7. The electronic apparatus according to claim 4, further comprising a first correction instruction unit that transmits a correction instruction for the time to a driver in a passenger compartment of the vehicle. A second correction instruction section for transmitting the time correction instruction;
The electronic device according to claim 1, wherein the receiving unit receives the standard time when the second correction instruction unit transmits a time correction instruction. Based on the own vehicle position information indicating the position of the own vehicle detected based on a GPS (Global Positioning System) signal and the position information of the plurality of transmitting stations that transmit the standard radio wave, the plurality of transmitting stations A transmission station selection unit that selects one transmission station that receives the standard radio wave from the inside,
The said receiving part receives the said standard radio wave transmitted from the said one transmitting station selected by the said transmitting station selection part, The any one of Claims 1-8 characterized by the above-mentioned. Electronic equipment. A radio clock receiver installed in a vehicle compartment,
Provide an antenna to receive the standard time signal indicating the current time,
A receiving device for a radio-controlled timepiece, wherein the antenna is provided in a portion that protrudes from a passenger compartment space.

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