JP6929578B2 - System etc. - Google Patents

Description

The present invention relates to a system, a program, and the like.

There are various types of systems that measure the speed of vehicles traveling on the road. In the case of the radar method, a speed measuring device installed along the road emits microwaves in a predetermined frequency band toward the vehicle, receives reflected waves from the vehicle, and measures the traveling speed of the vehicle.

For users such as vehicle drivers, it may be useful to be able to grasp the existence of the speed measuring device in advance. Patent Documents 1 and 2 disclose an electronic device that receives microwaves emitted from a vehicle speed measuring device and outputs an alarm when it detects that the vehicle speed measuring device is present.

Japanese Unexamined Patent Publication No. 2008-64588 JP-A-2017-96728

The moving speed of an object can also be measured using light. In the case of this optical method, the light emitting device emits light toward an object, receives the reflected wave from the object, and measures the moving speed. Even when such an optical speed measuring device is installed, it is desirable to be able to notify the user of its existence. One of the objects of the present invention is to provide a technique for notifying a user of the existence of a light emitting device that emits light having a specific wavelength.

The object of the invention of the present application is not limited to this, and there is an intention to acquire rights by divisional application, amendment, etc. for a configuration for the purpose of obtaining an effect produced from a portion of the configuration disclosed in the present specification, drawings, etc. .. For example, the present specification discloses a problem in which the part described as "can be" is replaced with "is a problem" in the present specification. The issues are described as independent, and the intention is to acquire the rights to solve each issue independently by divisional application, amendment, etc. Even if the subject matter is implicitly grasped from the description in the specification, the applicant intends to make a part of the structure described in the specification amended or to be claimed in the divisional application. It also discloses a structure that solves problems that combine these independent problems, and has the intention to acquire rights.

(1) A system provided in a vehicle that notifies the existence of a device that emits light of a specific wavelength to detect the presence of the vehicle, and is an incident surface having an aspherical curved surface and light incident on the incident surface. A condensing lens including an exit surface from which light is emitted, a light receiving element that receives light emitted from the exit surface, and a light receiving element.
A system including a control unit that controls to notify the presence of the light emitting device based on the light of the specific wavelength received by the light receiving element is provided.

In this way, it is possible to provide a technique for notifying the user of the existence of a light emitting device that emits light having a specific wavelength. In particular, by using a condensing lens having an incident surface having an aspherical curved surface, the light receiving element can receive light coming from a wide range in a predetermined direction, so that the existence of the light emitting device can be more reliably notified. can.

The light emitting device may be a device that emits light whose energy is distributed in a wavelength region narrower than that of ambient light. The ambient light may be light other than the target light to be received. The specific wavelength may be a wavelength at which the energy of the light emitted by the light emitting device peaks. The specific wavelength is often a wavelength that is not perceived by humans, for example, it is preferable to have energy at a specific wavelength outside the visible light region. The specific wavelength belongs to, for example, the infrared light region, and is preferably 905 nm. The specific wavelength is not limited to this, and may be 850, 950 nm, 1900 nm or other wavelengths. The wavelength different from the specific wavelength may be a wavelength different from the wavelength at which the energy of the light emitted by the light emitting device peaks. A wavelength different from the specific wavelength may be a wavelength included in the visible light region. The light receiving amount may indicate the light amount of a specific wavelength selected and received by the light receiving unit. Selecting a wavelength means selecting a part of the wavelength from a certain wavelength region and not selecting at least a part of the other wavelengths. The notification control may refer to a control for notifying information in a manner that can be recognized by the user.

(2) The incident surface may include a curved surface that is convex along the width direction of the vehicle.

In this way, since the light receiving element receives light coming from a wide range in the width direction of the vehicle, it is possible to more reliably notify the presence of the light emitting device.

(3) The incident surface may have a length in the width direction of the vehicle larger than a length in the height direction of the vehicle.

In this way, since the light receiving element receives light coming from a wide range in the width direction of the vehicle, it is possible to more reliably notify the presence of the light emitting device.

(4) The incident surface may include a curved surface that is convex along the width direction of the vehicle and the height direction of the vehicle.

In this way, since the light receiving element receives light coming from a wide range of directions, it is possible to more reliably notify the presence of the light emitting device.

(5) The incident surface may include a curved surface that is convex along the width direction of the vehicle and a flat curved surface that is flat along the height direction of the vehicle.

In this way, since the light receiving element receives light coming from a wide range in the width direction of the vehicle, it is possible to more reliably notify the presence of the light emitting device.

(6) The exit surface may include a flat surface.

In this way, since the light receiving element receives light coming from a wide range in the width direction of the vehicle, it is possible to more reliably notify the presence of the light emitting device.

(7) The light receiving element may be arranged at a position closer to the condensing lens than the focal length position of the condensing lens.

In this way, by arranging the light receiving element closer to the condensing lens than the focal length position, it is possible to receive light having a wide incident angle.

(8) The control unit may perform control to notify the presence of the device when the pulse width of the light received by the light receiving unit is within a certain range from the reference pulse width.

Reference to the pulse width of the received light may be useful in detecting a light emitting device that emits a specific pulsed light. By doing so, it is possible to reduce the notification that the ambient light is mistaken for the light from the light emitting device.

(9) The control unit may perform control to notify the presence of the light emitting device when a pulsed light having a pulse width of 20 ms is received.

In this way, it is possible to notify the existence of a light emitting device that measures the speed of the vehicle and controls the vehicle.

(10) The control unit may perform control to notify the presence of the device when the pulse interval of the light received by the light receiving unit is within a certain range from the reference pulse interval.

Referencing the pulse interval of the received light may be useful in detecting a light emitting device that emits a specific pulsed light. By doing so, it is possible to reduce the notification that the ambient light is mistaken for the light from the light emitting device.

(11) The control unit may perform control to notify the presence of the light emitting device when the pulsed light having a pulse interval of 80 ms is received.

In this way, it is possible to notify the existence of a light emitting device that measures the speed of the vehicle and controls the vehicle.

(12) The control unit may change the level of the notification according to at least one of the pulse width and the pulse interval of the light received by the light receiving unit.

In this way, the user knows how important the content of the notification is.

(13) The control unit may perform control to notify the presence of the light emitting device when the pulsed light of the light having the specific wavelength is received at least once.

In this way, the user can immediately know that the fermentation apparatus exists.

(14) It is preferable to have a reflecting portion that reflects at least a part of the light emitted from the condensing lens in the direction of the light receiving element.

By doing so, the amount of light received from the light emitting device by the light receiving element increases, so that the presence of the light emitting device can be notified more reliably.

(15) The reflecting portion is provided at a position different from that on the optical path from the lens to the light receiving element, and has a reflecting surface that reflects at least a part of the light emitted from the lens in the direction of the light receiving element. It is good to include it.

By doing so, the amount of light received from the light emitting device by the light receiving element increases, so that the presence of the light emitting device can be notified more reliably.

(16) The reflecting surface may be arranged so as to surround the optical path.

By doing so, the amount of light received from the light emitting device by the light receiving element increases, so that the presence of the light emitting device can be notified more reliably.

(17) The reflecting portion is provided on an optical path from the lens to the light receiving element, and reflects at least a part of the light emitted from the lens in the direction of the light receiving element by utilizing total reflection of light. It is preferable to include a member to be used.

By doing so, the amount of light received from the light emitting device by the light receiving element increases, so that the presence of the light emitting device can be notified more reliably.

(18) It has an amplifier that amplifies a signal according to the amount of received light from the light receiving element, and a differential amplifier that outputs a signal corresponding to the difference between the level of the signal after amplification and the threshold level. The control unit may perform control to notify the presence of the light emitting device based on the signal corresponding to the difference.

By doing so, the amount of light received from the light emitting device by the light receiving element is amplified, so that the presence of the light emitting device can be notified more reliably.

(19) The control unit may perform control to change the threshold level.

In this way, it is possible to reduce the possibility that the control for notifying the presence of the light emitting device cannot be performed due to the influence of ambient light or electromagnetic noise.

(20) The control unit may set the threshold level so as to exceed at least the level of light emitted by the equipment provided in the vehicle.

In this way, it is possible to reduce the possibility that the control for notifying the presence of the light emitting device cannot be performed due to the influence of the light emitted from the device provided in the vehicle.

(21) A substrate including a first surface on the condensing lens side and a second surface facing the first surface is provided, and the light receiving element is provided on the second surface side of the substrate. Is provided with a translucent portion for guiding light from the first surface side to the light receiving element.

In this way, since the substrate is located between the light receiving element and the light receiving element lens, the space corresponding to the focal length can be effectively used, and the thickness of the entire housing can be suppressed.

In addition, the present invention may be specified as follows.
(A) A system provided in a vehicle, based on a light receiving unit that selects and receives light of a specific wavelength from the incident light and outputs a signal according to the amount of received light, and a signal output by the light receiving unit. Therefore, a system including a control unit that performs a first notification control for notifying the existence of a light emitting device that emits light having the specific wavelength is provided.

In this way, it is possible to provide a technique for notifying the user of the existence of a light emitting device that emits light having a specific wavelength.

The light emitting device may be a device that emits light whose energy is distributed in a wavelength region narrower than that of ambient light. The ambient light may be light other than the target light to be received. The specific wavelength may be a wavelength at which the energy of the light emitted by the light emitting device peaks. The specific wavelength is often a wavelength that is not perceived by humans, for example, it is preferable to have energy at a specific wavelength outside the visible light region. The specific wavelength belongs to, for example, the infrared light region, and is preferably 905 nm. The specific wavelength is not limited to this, and may be 850, 950 nm, 1900 nm or other wavelengths. The wavelength different from the specific wavelength may be a wavelength different from the wavelength at which the energy of the light emitted by the light emitting device peaks. A wavelength different from the specific wavelength may be a wavelength included in the visible light region. The light receiving amount may indicate the light amount of a specific wavelength selected and received by the light receiving unit. Selecting a wavelength means selecting a part of the wavelength from a certain wavelength region and not selecting at least a part of the other wavelengths. The notification control is a control that notifies information in a manner that can be recognized by the user.

(B) The control unit may be a system that performs the first notification control for displaying an animation image including an image imitating the light emitting device.

In this way, it is possible to make it easier for the user to recognize that there is a light emitting device in which the vehicle is approaching.

(C) The control unit may be a system that performs the first notification control that displays at least one of the attributes of the light emitting device and the state of the vehicle in addition to the animation image.

In this way, the user can be made to recognize at least one of the attributes of the light emitting device and the state of the vehicle.

(D) When the position of the vehicle has a predetermined relationship with the position of the light emitting device, the control unit may be a system that performs a second notification control different from the first notification control.

In this way, it is possible to make the user recognize whether the light emitting device from which the light of the specific wavelength received by the system is generated or the light emitting device specified based on the position of the vehicle is closer. can.

(E) A radio wave receiving unit for receiving a predetermined radio wave is provided, and the control unit performs a third notification control for notifying the existence of the radio wave generator in response to receiving the predetermined radio wave. It is preferable to use a system that stops the third notification control during the period during which the first notification control is performed.

In this way, when notifying the existence of a light emitting device having a specific wavelength, it is possible to prevent the presence of a radio wave generator from being notified.

(F) The control unit may be a system that performs the third notification control for displaying an animation image including an image imitating the generator.

In this way, it is possible to make it easier for the user to recognize that there is a radio wave generator in which the vehicle is approaching.

(G) The control unit may perform a fourth notification control according to the positional relationship between the vehicle and another vehicle, and may perform the fourth notification control in parallel with the first notification control.

In some cases, the priority of information notification according to the positional relationship between the own vehicle and another vehicle is high. When the need for this notification arises, information can be notified according to the positional relationship between the own vehicle and another vehicle even when the own vehicle is approaching the light emitting device.

(H) The control unit may be a system that stops the first notification control when the speed of the vehicle is less than a predetermined speed.

By doing so, it is possible to prevent unnecessary notification when the speed of the vehicle is less than a predetermined speed.

(I) When the position of the vehicle satisfies a predetermined condition, the control unit may perform the first notification control even if the speed of the vehicle is less than the predetermined speed.

In this way, depending on the position of the vehicle, if the presence of the light emitting device should be notified even if the speed of the vehicle is less than a predetermined speed, this can be notified.

(K) The control unit performs a fifth notification control for notifying the state of an occupant of the vehicle based on an image of a camera that images the passenger compartment of the vehicle, and during the period during which the first notification control is performed. It is preferable to use a system for stopping the fifth notification control.

In this way, when notifying the existence of the light emitting device having a specific wavelength, it is possible to prevent the state of the occupant of the vehicle from being notified.

(L) It has a housing having a light transmitting portion that transmits light of at least the specific wavelength, and the light receiving portion is arranged inside the housing, and among the light incident through the light transmitting portion, the light receiving portion is described. A system that receives light of a specific wavelength is preferable.

In this way, it is possible to receive light of a specific wavelength by using the light receiving unit housed in the housing.

(M) The light receiving portion includes a first filter facing the light transmitting portion, a first light receiving element that receives light that has passed through the first filter, a second filter facing the light transmitting portion, and the like. It has a second light receiving element that receives light that has passed through the second filter, and the housing has a first window corresponding to the first light receiving element and a second window corresponding to the second light receiving element. It is preferable to use a system having.

In this way, the presence of the light emitting device can be notified by the configuration using at least two sets of light receiving elements housed in the housing.

(N) The first light receiving element and the second light receiving element are housed in a shield case made of a conductive material, and a space in which the first light receiving element is housed and a space in which the second light receiving element is housed. It is preferable to use a system in which and are separated by a partition wall.

In this way, the signal output by the light receiving element is less susceptible to electromagnetic noise than when it is not shielded with a conductive material.

(O) A first display unit that displays an image, a control circuit that faces the display unit and executes a part or all of the functions of the control unit, and a radio wave receiving unit that receives a predetermined radio wave. A second substrate on which a substrate and a GNSS (Global Navigation Satellite System) receiving unit, which faces the first substrate on the opposite side of the display unit and is provided adjacent to the light receiving unit and the light receiving unit, are mounted. At least a part of the radio wave receiving unit is mounted on the surface side of the first substrate facing the second substrate, and the second substrate has at least a part of the radio wave receiving unit. A system in which an existing area is cut out is preferable.

In this way, it is possible to suppress an increase in the thickness of the system.

(P) The control unit controls to output sound from the speaker, the speaker is provided adjacent to the GNSS receiving unit, and the speaker and the GNSS receiving unit are above the radio wave receiving unit. It is good to have a system to be placed.

In this way, it is possible to suppress an increase in the thickness of the system.

(Q) The second substrate has a first region and a second region that is shorter in the vertical direction than the first region and projects upward from the first region, and the light receiving light is received in the first region. It is preferable to use a system in which the unit is mounted and the GNSS receiving unit is mounted in the second region.

In this way, it is possible to suppress an increase in the thickness of the system.

(R) A substrate on which the light receiving unit is mounted, an antenna unit that receives a predetermined radio wave, and a radio wave receiving unit having a processing circuit that processes a signal from the antenna, and the antenna unit is the antenna unit. It is preferable that the system is arranged at a position adjacent to the substrate and the normal direction of the antenna portion and the normal direction of the substrate intersect.

In this way, it is possible to provide a technique for notifying the user of the existence of the light emitting device while reducing the changes from the existing system.

(S) The control unit may be a system that controls to notify the existence of a light emitting device that emits light having a specific wavelength when recognizing a pattern of a predetermined reflector.

In this way, it is possible to notify the presence of the light emitting device at a place where there is a high possibility that the light emitting device is present, and it is possible to reduce the possibility of false alarm.

(T) A program for realizing the function of the control unit of any of the above systems on a computer is provided.

In this way, it is possible to provide a technique for notifying the user of the existence of a light emitting device that emits light having a specific wavelength.

The inventions shown in (1) to (20) and (A) to (T) described above can be arbitrarily combined. For example, it is preferable to add at least a part of the structure of at least one invention after (2) to all or part of the structure of the invention shown in (1). In particular, the invention shown in (1) may be an invention in which at least a part of at least one of the inventions after (2) is added. Further, any configuration may be extracted from the inventions shown in (1) to (20) and (A) to (T), and the extracted configurations may be combined. The applicant of the present application intends to acquire rights to an invention including these configurations. Further, even if there is a description of "in the case of" or "in the case of", it is not described as a configuration limited to that case or at that time. These show examples of better configurations and are willing to acquire rights in these cases and in occasional configurations. In addition, the places where the description is accompanied by an order are not limited to this order. It also discloses a configuration in which some parts have been deleted or the order has been changed, and has the intention of acquiring rights.

According to the present invention, it is possible to notify the user of the existence of a light emitting device that emits light having a specific wavelength.

The effect of the invention of the present application is not limited to this, and the effect exerted from the part of the constitution disclosed in the present specification and the drawings, etc. is also disclosed, and the right of the constitution exhibiting the effect is acquired by divisional application, amendment, etc. Have the intention to do. For example, in the present specification, the part described as "can be" is a description that clearly indicates the effect to be exerted, and there is a part that shows the effect even if there is no description of "can be". Moreover, even if there is no such description, there is an effect that can be grasped by the configuration.

It is a figure which shows the structure of the electronic device which concerns on 1st Embodiment. It is a figure which shows an example of the waveform of the pulsed light emitted by the speed measuring apparatus which concerns on 1st Embodiment. It is a rear view of the electronic device which concerns on 1st Embodiment. It is sectional drawing of the electronic device which concerns on 1st Embodiment. It is sectional drawing of the electronic device which concerns on 1st Embodiment. It is a figure explaining an example of the schematic property of the 1st wavelength selection part and the 2nd wavelength selection part which concerns on 1st Embodiment. It is a block diagram which shows the electrical structure of the electronic device which concerns on 1st Embodiment. It is a flowchart which shows the operation of the electronic device which concerns on 1st Embodiment. It is a figure which shows an example of the display screen of the electronic device which concerns on 1st Embodiment. It is a figure which shows an example of the display screen of the electronic device which concerns on 1st Embodiment. It is a figure which shows an example of the display screen of the electronic device which concerns on 1st Embodiment. It is a figure which shows an example of the display screen of the electronic device which concerns on 1st Embodiment. It is a flowchart which shows the operation of the electronic device which concerns on 1st Embodiment. It is a figure which shows an example of the display screen of the electronic device which concerns on 1st Embodiment. It is a figure which shows an example of the waveform of the pulsed light received by the electronic device which concerns on the modification of 1st Embodiment. It is a figure which shows an example of the display screen of the electronic device which concerns on the modification of 1st Embodiment. It is a figure explaining the reason why the number of pulses of the pulsed light received by the electronic device which concerns on the modification of 1st Embodiment decrease. It is a flowchart which shows the operation of the electronic device which concerns on the modification of 1st Embodiment. It is a figure explaining the outline of the system which concerns on 2nd Embodiment. It is a flowchart which shows the operation of the electronic device which concerns on 2nd Embodiment. It is a figure which shows an example of the display screen of the electronic device which concerns on 2nd Embodiment. It is a block diagram which shows the structure of the system which concerns on 3rd Embodiment. It is a figure explaining an example of the schematic property of the 1st wavelength selection part and the 2nd wavelength selection part which concerns on 3rd Embodiment. It is a block diagram which shows an example of arrangement of the light receiving part in the system which concerns on 3rd Embodiment. It is a figure which shows the circuit structure example of the light receiving part which concerns on one modification. It is a six-sided view which shows an example of the appearance composition of an electronic device. It is a figure which shows an example of the notification screen which displays when the pulsed light is received from the mobile speed measuring device of the electronic device in another embodiment. It is a figure which shows an example of the animation image displayed in the information display area TA2. It is a figure which shows an example of the animation image which follows FIG. It is a figure which shows an example of the notification screen which displays when the pulsed light is received from the mobile speed measuring device of the electronic device in another embodiment. It is a figure which shows an example of the animation image displayed in the information display area TA3. It is a figure which shows an example of the animation image which follows FIG. It is a figure which shows an example of the notification screen at the time of detecting the micro speed measuring apparatus of the electronic device in another embodiment. It is a figure which shows an example of the animation image displayed in the information display area TA5. It is a figure which shows an example of the animation image which follows FIG. 34. It is a figure which shows the relationship between the received microwave, and the notification method in another embodiment. It is a figure which shows the relationship between the detection method and the notification method of the speed measuring apparatus in another embodiment. It is a figure which shows an example of the notification screen about a collision warning in another embodiment. It is a figure explaining the warning about aside / doze driving in another embodiment. It is a figure which shows an example of the notification screen which concerns on the alarm about aside / doze driving in another embodiment. It is a figure which shows an example of the notification screen which concerns on the alarm about aside / doze driving in another embodiment. It is a figure explaining the GPS warning in another embodiment. It is a table explaining the notification control by the electronic device in another embodiment. It is a figure which shows the notification screen when the pulsed light is received from the mobile speed measuring device of the electronic device in another embodiment. It is a figure which shows the notification screen when the radar type speed measuring device of the electronic device in another embodiment is detected. It is a figure which shows the notification timing and notification method in another embodiment. It is a figure which shows the notification timing and notification method in another embodiment. It is a figure which shows the notification timing and notification method in another embodiment. It is a perspective view which shows an example of the appearance structure of the electronic device in another embodiment. It is a hexagonal view which shows an example of the appearance structure of the electronic device in another embodiment. It is a hexagonal view which shows an example of the appearance structure of the electronic device in another embodiment. It is a rear view when the lid part of the electronic device in another embodiment is removed. It is an exploded perspective view of the electronic device in another embodiment. It is a rear view which shows the state which further removed the 2nd housing from the electronic device in another embodiment. It is a perspective view which shows the internal structure of the electronic device in another embodiment. It is a perspective view which shows the internal structure of the electronic device in another embodiment. It is a perspective view which shows the internal structure of the electronic device in another embodiment. It is a figure which shows the photograph of the 2nd substrate in another embodiment. It is a figure which shows an example of the structure of the light receiving part in another embodiment. It is a figure which shows an example of the filter characteristic in another embodiment. It is a figure which shows the structure when the 2nd board of an electronic device is removed. It is a perspective view which shows the appearance composition of the electronic device which is another example in another embodiment. It is a perspective view which shows the appearance structure of the electronic device which is another embodiment. It is a perspective view which shows the internal structure of the electronic device which is another embodiment. It is a perspective view which shows the internal structure of the electronic device which is another embodiment. It is a perspective view which shows the internal structure of the electronic device which is another embodiment. It is a figure explaining the noise reduction method of the electronic device which is another embodiment. It is a figure explaining another embodiment. It is a figure explaining another embodiment. It is a figure explaining another embodiment. It is a figure explaining another embodiment. It is a figure which shows the structure which looked at the electronic device of this embodiment from the diagonally upper right direction on the back side. It is a six-sided view which shows an example of the appearance structure of the electronic device of this embodiment. It is a figure which shows the state which the 2nd housing is removed from the electronic device of this embodiment. It is a figure which shows the state which further removed the lens from the electronic device of this embodiment. It is a figure which shows the state which further removed the filter and the shield plate from the electronic device of this embodiment. FIG. 76 is a diagram in which the substrate is erased. It is a hexagonal view which shows an example of the structure of the lens of this embodiment. The figure explaining the experiment for confirming that an aspherical lens can receive light of a wide incident angle. It is a figure which shows an example of the electric structure of the light receiving part of this embodiment. It is a figure which shows an example of the structure which applied the reflective part to the electronic device of this embodiment. It is a figure which shows an example of the structure which applied the reflective part to the electronic device of this embodiment. It is a figure explaining the light from the collision warning system received by the electronic device of this embodiment. It is a graph which shows an example of the temporal change of the level of the light received by the light receiving part. It is a figure which shows an example of the electric structure of the light receiving part of this embodiment. It is a figure explaining the method of setting the threshold value of this embodiment. It is a figure which shows an example of the modification of the electric structure of a light receiving part. It is a figure which shows the structure which looked at the electronic device of this embodiment from the diagonally upper right direction on the back side. It is a six-sided view which shows an example of the appearance structure of the electronic device of this embodiment. It is a six-sided view which shows an example of the appearance structure of the electronic device of this embodiment. It is a figure which shows the internal structure of the electronic device of this embodiment. It is a figure which shows the internal structure of the electronic device of this embodiment. It is a figure which shows the internal structure of the electronic device of this embodiment. It is a figure explaining the operation of the electronic device of this embodiment. It is a figure explaining the operation of the electronic device of this embodiment. It is a figure explaining an example of the characteristic of the 1st wavelength selection part and the 2nd wavelength selection part which concerns on one modification. It is a figure which shows the structure of the light receiving part which concerns on one modification. It is a figure which shows the control performed by the control part which concerns on one modification.

Hereinafter, embodiments will be described in detail with reference to the drawings. The embodiments shown below are examples of the embodiments of the present disclosure, and the present disclosure is not limited to these embodiments. In the drawings referred to in the present embodiment, the same part or a part having a similar function is given the same code or a similar code (a code in which A, B, etc. are simply added after the numbers), and the process is repeated. The description of may be omitted. Further, in each of the figures referred to in the following description, the scale may be different from the actual scale in order to make each member, each region, etc. recognizable. Hereinafter, a case where the system of the present disclosure is applied to a system mounted on a vehicle and detecting a speed measuring device that emits light having a specific wavelength will be described.

[1. First Embodiment]
<1-1. Configuration of the first embodiment>
FIG. 1 is a diagram showing a configuration of a system according to the first embodiment. The electronic device 10 is an electronic device to which the system according to the present disclosure is applied. The electronic device 10 is a detector compatible with an optical system and a radar system. The electronic device 10 targets the speed measuring device 30 for detection. The optical method is a method of detecting the light emitted by the speed measuring device 30. The light emitted by the speed measuring device 30 is pulsed light in the present embodiment. More specifically, the light emitted by the speed measuring device 30 is a pulse laser having a constant pulse width. In this case, the optical method can also be called a laser method. The radar method is a method of receiving a predetermined radio wave emitted by a speed measuring device (not shown) which is a radio wave generating device. The predetermined radio wave is a microwave in this embodiment.

The electronic device 10 is a monitor-type device having a substantially rectangular parallelepiped shape. The electronic device 10 is installed in the vehicle interior of the vehicle 40. The electronic device 10 is installed on the dashboard 41 using, for example, double-sided tape. The housing of the electronic device 10 is the housing 100. An opening is provided on the front surface of the housing 100. The electronic device 10 has a display unit 13 for displaying an image at the position of the opening. The housing 100 is made of resin or other material.

The speed measuring device 30 is installed at a speed control point of the vehicle. The speed measuring device 30 may be, for example, either a fixed type or a mobile type, but may be a mobile type. The mobile type includes, for example, a portable type and a vehicle-mounted type. In the case of the mobile type, the electronic device 10 can detect the speed measuring device 30 by an optical method even if the position information of the speed control point is not known. In the example of FIG. 1, the speed measuring device 30 is installed on a sidewalk adjacent to a roadway and measures the speed of a vehicle traveling on the roadway. The speed measuring device 30 measures the distance to the vehicle within a predetermined distance (for example, 70 m), and further measures the speed of the vehicle at a predetermined distance (for example, 20 m) closer to the own device.

The speed measuring device 30 includes a speed measuring unit 31, an imaging unit 32, and a strobe 33. The speed measuring unit 31 measures the speed of the vehicle by a laser scanning method. Specifically, when the pulsed light Lout reaches the vehicle 40 and is reflected, the speed measuring unit 31 receives the reflected light Lref. The speed measuring unit 31 measures the distance to the vehicle 40 based on the time required from emitting the pulsed light Lout to receiving the reflected light Lref. The speed measuring unit 31 measures the distance to the vehicle 40. The measurement is repeated, and the speed of the vehicle 40 is measured based on the moving distance of the vehicle 40 in a unit time.

The velocity measuring unit 31 emits pulsed light Lout while changing the direction within the fan-shaped range T having a central angle of θ. θ is, for example, 110 degrees. The range T includes a range on the upstream side in the traveling direction of the vehicle 40 wider than a range on the downstream side than the position where the speed measuring device 30 is installed. The velocity measuring unit 31 changes the emission direction of the pulsed light Lout in the counterclockwise direction. For example, the velocity measuring unit 31 emits the pulsed light Lout in the direction of arrow D1 and then emits the pulsed light Lout in the direction of arrow D2. The emission direction of the pulsed light Lout is, for example, a substantially horizontal direction. The speed measuring unit 31 emits pulsed light to, for example, a mirror rotating at a constant speed. The pulsed light reflected by the mirror and emitted from the light emitting window is the pulsed light Lout.

The pulsed light Lout has energy concentrated in a specific wavelength. The specific wavelength may be a wavelength at which the energy of the light emitted by the light emitting device peaks. It is desirable that the pulsed light Lout has energy at a specific wavelength outside the visible light region, for example. The specific wavelength is often a wavelength that is not perceived by humans, for example, it is preferable to have energy at a specific wavelength outside the visible light region. The specific wavelength belongs to, for example, the infrared light region and is 905 nm. However, the specific wavelength is not limited to this, and may be 850 nm, 950 nm, 1900 nm, or other wavelength.

FIG. 2 is a diagram showing an example of the waveform of the pulsed light Lout emitted from the speed measuring device 30. The pulsed light Lout here is a square wave. However, the pulsed light Lout may be a sine wave, a triangular wave, a sawtooth wave, or other waveform. The pulsed light Lout is light in which the period T1 and the period T2 appear alternately. The period T1 is a period during which pulsed light having a specific wavelength λout is emitted. During period T1, the pulsed light Lout alternates between high level (H) and low level (L). The period T2 is a period during which the light of this pulse waveform is not emitted. As described above, the speed measuring device 30 emits pulsed light to a mirror rotating at a constant speed, and emits pulsed light Lout reflected by the mirror. Therefore, the period during which the pulsed light from the mirror does not face the direction of the light emitting window of the speed measuring device 30 is the period T2.

The imaging unit 32 images the target vehicle when the speed measured by the speed measuring unit 31 is equal to or greater than the threshold value. The imaging unit 32 is used to image a vehicle that violates the speed. The strobe 33 emits light when it is imaged by the imaging unit 32. The image pickup unit 32 may take an image based on the light in the infrared light region so that the image can be taken even at night. In this case, the strobe 33 may emit light having energy in the infrared light region. The speed measuring device 30 transmits data such as the measured speed and the captured image to an external computer.

FIG. 3 is a rear view of the electronic device 10. As shown in FIG. 3, a first window 101 and a second window 102 are formed on the back surface of the housing 100. The first window 101 and the second window 102 are openings for guiding external light to the inside of the housing 100. The first window 101 and the second window 102 are arranged at predetermined intervals in the left-right direction. The first window 101 and the second window 102 are, for example, rectangular, but may have other shapes. A light receiving unit 12 is provided inside the housing 100. The light receiving unit 12 receives the light incident through the first window 101 and the second window 102.

4 and 5 are cross-sectional views of the electronic device 10. FIG. 4A is a cross-sectional view (I-I cross-sectional view of FIG. 3) when the electronic device 10 is cut along the vertical direction at a position including the first window 101. FIG. 4B is a cross-sectional view (II-II cross-sectional view of FIG. 3) when the electronic device 10 is cut along the vertical direction at a position including the second window 102. FIG. 5 is a cross-sectional view (III-III cross-sectional view of FIG. 3) when the electronic device 10 is cut along the left-right direction at a position including the first window 101 and the second window 102. It is a graph which shows an example of the schematic property of the wavelength selection part which will be described later which the light receiving part 12 has. In FIG. 6, the horizontal axis corresponds to the wavelength and the vertical axis corresponds to the transmittance.

As shown in FIGS. 4A and 4B, the visible light cut filter 126 is provided in the first window 101. The second window 102 is provided with a visible light cut filter 127. The visible light cut filters 126,127 block at least a part of visible light. The visible light cut filters 126 and 127 transmit light having a specific wavelength of λout. Blocking visible light should at least attenuate visible light. The visible light region is, for example, 400 to 700 nm. Due to the presence of the visible light cut filters 126 and 127, the parts housed inside the housing 100 are less likely to be visually recognized from the outside. Further, due to the presence of the visible light cut filters 126 and 127, it is possible to reduce the adverse effect of the light receiving unit 12 receiving strong visible light such as direct sunlight.

As shown in FIG. 4A, a first wavelength selection unit 121 and a first light receiving element 122 are provided facing the first window 101. The first wavelength selection unit 121 selects and transmits light having a specific wavelength of λout from the incident light. Selecting a wavelength may mean selecting a part of the wavelength from a certain wavelength region and not selecting at least a part of the other wavelengths. The first wavelength selection unit 121 is a bandpass filter here. As shown by a solid line in FIG. 6, light of a wavelength region including a specific wavelength λout, here, a wavelength region from wavelength λ1a to wavelength λ1b is transmitted, and light of other wavelength regions is blocked. Blocking light means at least attenuating the light, and the amount of attenuation is larger at a wavelength that blocks light than at a wavelength at which light is transmitted. The characteristics of the first wavelength selection unit 121 are determined from the viewpoint of transmitting only light having the same wavelength as the pulsed light from the speed measuring device 30 as much as possible. The width of the wavelength region from the wavelength λ1a to the wavelength λ1b is, for example, 20 nm, but it is more desirable that the width is narrower than this.

In FIG. 6, the transmittance of the frequency region through which light is transmitted is represented as 100%, and the frequency region in which light is blocked is represented as approximately 0%. However, the transmittance may be practically acceptable. The wavelength selection unit preferably exhibits steep characteristics as illustrated in FIG. 6, but may exhibit broader characteristics. For example, there may be wavelengths in which the transmittances of the first wavelength selection unit 121 and the second wavelength selection unit 123 are not 0%.

The first light receiving element 122 receives the light transmitted by the first wavelength selection unit 121, and outputs a first signal corresponding to the first light receiving amount, which is the received light amount. The first light receiving element 122 is preferably a photodiode, for example, but may be a phototransistor or other light receiving element. The first light receiving element 122 has sensitivity at least in the infrared light region. The first light receiving element 122 includes, for example, a resin mold that transmits infrared light. The first light receiving element 122 may not receive light in a wavelength region of 700 nm or less. The first light receiving element 122 is a so-called lensless type light receiving element that does not have a lens. As a result, the light receiving angle of the first light receiving element 122 becomes large (for example, 120 to 180 degrees), and light in multiple directions can be received. Instead of this, a lens or a mirror may be combined to widen the light receiving angle of the first light receiving element 122.

As shown in FIG. 4B, a second wavelength selection unit 123 and a second light receiving element 124 are provided facing the second window 102. The second wavelength selection unit 123 is a filter that selects and transmits light in a wavelength region different from the specific wavelength λout from the incident light. The wavelength different from the specific wavelength may be a wavelength different from the wavelength at which the energy of the light emitted by the light emitting device peaks. A wavelength different from the specific wavelength may be a wavelength included in the visible light region. The second wavelength selection unit 123 is, for example, a band elimination filter. As shown by the broken line in FIG. 6, the second wavelength selection unit 123 blocks the light in the wavelength region including the specific wavelength λout, here, the wavelength region from the wavelength λ2a to the wavelength λ2b, and the light in the other wavelength region. To be transparent. The wavelength region from the wavelength λ2a to the wavelength λ2b does not include the specific wavelength λout, and it is desirable that the wavelength region other than the specific wavelength λout is included as widely as possible. The characteristics of the second wavelength selection unit 123 are determined from the viewpoint of transmitting only light having a wavelength different from that of the pulsed light Lout from the speed measuring device 30 as much as possible.

The second light receiving element 124 receives the light that has passed through the second wavelength selection unit 123, and outputs a second signal corresponding to the second light receiving amount, which is the received light amount. The second light receiving element 124 is, for example, a photodiode, but may be a phototransistor or another light receiving element. It is preferable that the second light receiving element 124 has the same light receiving element having the same characteristics as the first light receiving element 122, for example, a product (for example, a model number). This is because when the second light receiving element 124 and the first light receiving element 122 receive the same light, the first signal Sig1 and the second signal Sig2 become the same signal. Like the first light receiving element 122, the second light receiving element 124 is a so-called lensless type sensor without a lens.

As shown in FIG. 5, the housing 100 includes a partition wall 103 that blocks light between the first light receiving element 122 and the second light receiving element 124. It is desirable that the distance between the first light receiving element 122 and the second light receiving element 124 is as small as possible. This is to prevent a difference in the incident timing of light between the first light receiving element 122 and the second light receiving element 124. Even in this case, due to the presence of the partition wall 103, the light transmitted through the first wavelength selection unit 121 is received by the second light receiving element 124, and the light transmitted through the second wavelength selection unit 123 is received by the first light receiving element 122. Is less likely to receive light.

The light receiving portion 12 is preferably shielded with a conductive material. This shield is composed of, for example, a metallic case. As a result, the influence of electromagnetic noise on the electronic components in the housing 100 is reduced.

The first window 101, the second window 102, and the light receiving unit 12 are obliquely forward (for example, left front) with respect to the traveling direction of the vehicle 40 when the display unit 13 of the electronic device 10 is directed toward the driver's seat of the vehicle 40. It may be provided so as to face. As a result, the light receiving unit 12 may easily receive the pulsed light Lout from the speed measuring device 30.

FIG. 7 is a block diagram showing an electrical configuration of the electronic device 10. The control unit 11 controls each unit of the electronic device 10. The control unit 11 is, for example, a computer including an arithmetic processing circuit and a memory. The arithmetic processing circuit includes, for example, a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or other arithmetic processing circuits. The memory includes, for example, a RAM (Random Access Memory) or other volatile memory. The arithmetic processing circuit performs various controls by temporarily reading data into a memory and performing arithmetic processing.

The light receiving unit 12 includes a first wavelength selection unit 121, a first light receiving element 122, a second wavelength selection unit 123, a second light receiving element 124, and an interface 125. For example, the first wavelength selection unit 121 selects a wavelength region from the wavelength λ1a to the wavelength λ1b from the incident light and transmits it as light Lin1. The first light receiving element 122 receives light Lin1 and outputs a first signal Sig1 corresponding to the first light receiving amount. The first light receiving amount may indicate the light amount of a specific wavelength selected and received by the light receiving unit 12. The first signal Sigma1 indicates the amount of light received by Lin1. The second wavelength selection unit 123 selects a wavelength region different from the wavelength region from the wavelength λ2a to the wavelength λ2b and transmits it as light Lin2. The second light receiving element 124 receives the light Lin2 and outputs the second signal Sig2 according to the second light receiving amount. The second light receiving amount may indicate a light amount having a wavelength different from the specific wavelength selected and received by the light receiving unit 12. The second signal Sigma2 indicates the amount of light received by Lin2. The interface 125 processes the first signal Sigma1 and the second signal Sigma2, and outputs the processed signal to the control unit 11. The interface 125 converts, for example, the first signal Sigma1 and the second signal Sigma2 into a digital format and outputs the digital format.

The display unit 13 displays an image. The display unit 13 is, for example, a 3.2-inch color TFT liquid crystal display. However, the display unit 13 may be an organic EL display or another type of display device. The speaker 14 outputs sound. The microwave receiving unit 15 includes an antenna and a receiving circuit to receive microwaves. The GPS (Global Positioning System) receiving unit 16 includes an antenna and a receiving circuit, and receives a signal from a GPS satellite. The GPS receiving unit 16 processes the received signal and outputs the position information. The position information includes, for example, latitude information and longitude information, and may further include altitude information. The communication unit 17 communicates with the external device. The communication unit 17 performs wireless communication of, for example, Wi-Fi (registered trademark), Bluetooth (registered trademark) or other methods.

The storage unit 18 stores data. The storage unit 18 stores, for example, a program for the control unit 11 to perform various controls. The control unit 11 reads the program from the storage unit 18 into the memory and executes it. Further, the storage unit 18 stores map data indicating a map, data indicating the types and locations of various facilities, data for notifying the existence of an object to be notified, data for realizing a route guidance function, and the like. The notification target is, for example, a doze driving accident point, a speed measuring device (radar method, loop coil type, H system, LH system, photoelectric tube type, mobile type, etc.), speed limit switching point, control area, inspection area, ban. Monitoring area, N system, traffic monitoring system, intersection monitoring point, signal neglect deterrence system, police station, accident-prone area, on-board aiming area, steep / continuous curve (expressway), branch / confluence point (expressway), ETC lane advance guidance (expressway), service area (expressway), parking area (expressway), highway oasis (expressway), smart interchange (expressway), gas station in PA / SA (expressway), tunnel ( Expressway), highway radio reception area (expressway), prefectural border announcement, roadside station, viewpoint parking, etc. The storage unit 18 stores the type information of these notification objects, the position information indicating the position thereof, the data of the image (for example, a schematic diagram or a photograph) displayed on the display unit 13, and the voice data in association with each other. do.

The storage unit 18 may include a storage medium for permanently storing data. The storage unit 18 may include, for example, an optical recording medium, a magnetic recording medium, and a semiconductor recording medium, or other recording medium.

The operation unit 19 accepts the user's operation. The operation unit 19 includes, for example, a touch sensor, a volume control button, and a work button. The touch sensor is provided on the surface of the display unit 13 and detects the position touched by the user. The volume control button is operated to adjust the volume of the sound output from the speaker 14. The work button is a button for performing various tasks.

The sensor unit 20 includes various sensors. The sensor unit 20 includes, for example, a geomagnetic sensor, an acceleration sensor, and an illuminance sensor. The geomagnetic sensor is a sensor that detects the geomagnetism and detects in which direction the north direction is with respect to the traveling direction. The acceleration sensor is a sensor that detects the front-back, left-right, and up-down acceleration of the vehicle. The illuminance sensor is a sensor that detects the illuminance indicating the brightness of the vehicle interior.

The mounting unit 21 is a mounting unit on which an external storage medium is mounted. The external storage medium is, for example, a memory card. In this case, the mounting unit 21 is a memory card slot. The data stored in the storage unit 18 may be taken in via an external storage medium. As this data, there is update information of new notification target (target) information (position information such as longitude / latitude, type information, etc.).

The power supply unit 22 supplies the electric power supplied from the power supply to each unit in the electronic device 10. The power supply unit 22 includes, for example, a power switch and a DC jack. The DC jack is for connecting a cigar plug cord, and is connected to the cigar socket of the vehicle via the cigar plug cord to receive power supply. The power switch is a switch for turning on or off the power of the electronic device 10.

The light emitting unit 23 emits light in various colors. The light emitting unit 23 includes, for example, a light emitting diode.

The cable terminal portion 24 is a terminal to which an external connection cable is connected. For example, the connection cable is a cable that connects the electronic device 10 to the OBD-II connector mounted on the vehicle. The OBD-II connector is also called a failure diagnosis connector, is connected to the ECU (Engine Control Unit) of the vehicle, and outputs various vehicle information.

In addition to the above, the electronic device 10 may have a function provided by a well-known radar detector.

<1-2. Operation of the first embodiment>
Next, the operation of this embodiment will be described.
<1-2-1. Notification by optical method>
FIG. 8 is a flowchart showing the operation of the control unit 11 of the electronic device 10. FIG. 8 shows an operation when the speed measuring device 30 is detected by an optical method. When the electronic device 10 starts operating, the control unit 11 executes the process described below. The trigger for starting the operation of the electronic device 10 is not particularly limited, but for example, it may be triggered when the power of the electronic device 10 is turned on or the execution of the route guidance function is started.

The control unit 11 first starts displaying the map screen on the display unit 13 (step S1). The map screen is a screen showing the position of the own vehicle on the map. The map displayed on the display unit 13 is specified based on the map data and the position information from the GPS receiving unit 16. The own vehicle position is specified based on the position information from the GPS receiving unit 16. FIG. 9 is a diagram showing an example of a map screen. On the map screen shown in FIG. 9, an icon I1 indicating the position of the own vehicle is arranged on the map M. On the map screen, the address of the current position, the distance to the predetermined notification target (here, "1960 m to the H system"), the speed limit, and the photograph around the speed control point are displayed. FIG. 10 is a diagram showing another example of the map screen. Also on the map screen shown in FIG. 10, an icon I1 indicating the position of the own vehicle is arranged on the map M. Hereinafter, an example of control when the map screen shown in FIG. 10 is displayed will be described. The icon may be replaced with a character, a symbol, a figure, or other object.

Next, the control unit 11 acquires the first signal Sig1 and the second signal Sig2 from the light receiving unit 12 (step S2). Next, the control unit 11 calculates the difference between the first received light amount corresponding to the first signal Sig1 and the second received light amount corresponding to the second signal Sig2 (step S3). Next, the control unit 11 determines whether or not the calculated difference is equal to or greater than the threshold value (step S4). If the difference is less than the threshold value, the control unit 11 determines "NO" in step S4 and returns to the process of step S2. In this case, the control unit 11 does not notify that the speed measuring device 30 exists, assuming that the speed measuring device 30 has not been detected.

On the other hand, when the calculated difference is equal to or greater than the threshold value, the control unit 11 determines "YES" in step S4 and performs notification control (step S5). The notification control is a control for notifying the existence of the speed measuring device 30. The notification control can be said to be a control for issuing an alarm for the user to recognize what the speed measuring device is doing. Here, the notification control is a control for notifying the user of the existence of the speed measuring device 30 by the first method. The notification control includes, for example, a control for displaying the notification screen on the display unit 13.

FIG. 11 is a diagram showing an example of the notification screen. The notification screen shown in FIG. 11 is a screen in which the window W1 is superposed on the map screen described above. In the window W1, an icon M1 indicating the existence of the speed measuring device 30 and a message indicating the existence of the speed measuring device 30 such as "You are approaching the speed control point. Please be careful." Are arranged. The icon M1 is an icon that allows the user to recognize that the speed measuring device 30 is compatible with the optical method. The notification control may include a control for outputting the notification voice from the speaker 14. In this case, the control unit 11 may output the voice "The laser speed control point is approaching. Please be careful." From the speaker 14. The notification control may include controls other than these, and may include, for example, a control for causing the light emitting unit 23 to emit light. The notification control may be any control that notifies the presence of the speed measuring device 30 by a method that the user can recognize.

Next, the control unit 11 determines whether or not to end the process of FIG. 8 (step S6). The timing of the end of the process is not particularly limited, but for example, the power of the electronic device 10 may be turned off by the operation of the operation unit 19, or the route guidance function may be stopped. If it is determined as "NO" in step S6, the control unit 11 returns to the process of step S2 and repeats the above process. (Step S4). For example, when the difference changes from the threshold value or more to the threshold value or less, the control unit 11 determines “NO” in step S4 and stops the notification control. In this case, the control unit 11 causes the display unit 13 to display the map screen shown in FIG. This is because it means that the speed control point has been passed. If "YES" is determined in step S6, the control unit 11 ends the process of FIG. 8 (step S7).

Here, the reason why the speed measuring device 30 can be detected by the above-mentioned method will be described. As described with reference to FIG. 6, the first wavelength selection unit 121 selects light having a specific wavelength λout (more specifically, a wavelength region from the wavelength λ1a to the wavelength λ1b) in which the pulsed light Lout has energy. Make it transparent. Therefore, the first signal Sigma 1 should show a large amount of light received during the period when the pulsed light Lout is received, and show a small amount of light received during the other period. However, the light receiving unit 12 may receive not only the pulsed light Lout, which is the object of light reception, but also ambient light. This disturbed light may be mistaken for pulsed light. As ambient light, for example, there is light that arrives when sunlight is periodically blocked by the branches and leaves of a tree swayed by the wind. Other disturbance lights include light that is periodically turned on and off from traffic lights and advertisements, and light from a rotating warning light that rotates at a constant speed. Further, the light received by the light receiving unit also changes due to the vibration of the light receiving unit. For example, when the vehicle 40 travels on a place where periodic vibration is generated, such as on a pier, the direction of the light receiving unit 12 (for example, the first light receiving element 122) changes accordingly, and light such as sunlight is emitted to a predetermined value. It may be received as light that is repeatedly turned on and off in a cycle. Even in such a case, the first signal Sigma 1 shows a relatively large amount of received light.

On the other hand, the second wavelength selection unit 123 blocks light having a specific wavelength λout (in this embodiment, a wavelength region from wavelength λ2a to wavelength λ2b) in which the pulsed light Lout has energy, and blocks light in other wavelength regions. Allows light to pass through. Therefore, the amount of light received by the second signal Sig2 becomes small during the period in which the pulsed light Lout is received. The second light receiving element 124 receives the above-mentioned disturbance light, and such disturbance light generally has a wide wavelength region in which energy is distributed. Therefore, even when the light receiving unit 12 receives the ambient light that is periodically turned on and off, it is considered that the light receiving amount of the second light receiving element 124 is large. Therefore, when the received amount of the first signal Sig1 is large and the received amount of the second signal Sig2 is small, that is, when the difference in the received amount is equal to or larger than the threshold value, it can be estimated that the pulsed light Lout is received. On the other hand, when the received amount of the first signal Sigma1 is large and the received amount of the second signal Sigma2 is also large, that is, when the difference in the received amount is less than the threshold value, the possibility that the pulsed light Lout is received is low. Can be estimated. Therefore, according to the electronic device 10, it is expected that the detection accuracy of the speed measuring device 30 will be improved by receiving light using the first light receiving element 122 and the second light receiving element 124.

<1-2-2. Radar notification>
The control unit 11 may further execute the process of FIG. 13 in parallel with the process of FIG. 8 based on the microwave received by the microwave receiving unit 15.

First, the control unit 11 acquires a microwave reception signal from the microwave reception unit 15 (step S11). Next, the control unit 11 performs a determination process for determining the presence or absence of a radar-type speed measuring device based on the received microwave signal (step S12). In step S12, the control unit 11 may determine whether or not a speed control point exists based on the frequency band of the received microwave. The algorithm for this determination may be, for example, the method described in Patent Document 1 or 2, and the description thereof will be omitted.

Next, the control unit 11 determines whether or not the speed measuring device has been detected based on the result of the determination process (step S13). If it is determined as "YES" in step S13, the control unit 11 performs notification control (step S14). Here, the notification control is a control for notifying the user of the existence of the speed measuring device by a third method. The notification control includes, for example, a control for displaying the notification screen on the display unit 13. FIG. 14 is a diagram showing an example of the notification screen. The notification screen shown in FIG. 14 is a screen in which the window W2 is superposed on the map screen described above. In the window W2, an icon M2 indicating the existence of the speed measuring device 30 and a message indicating the existence of the speed measuring device such as "You are approaching the speed control point. Please be careful." Are arranged. The icon M2 is an icon that allows the user to recognize that the speed control device is compatible with the radar system. That is, the icon M2 is different from the icon M1. The notification control may include a control for outputting the notification voice from the speaker 14. In this case, the control unit 11 may output the voice "The speed control point by the radar is approaching. Please be careful." From the speaker 14. The information control information may be a control other than these, and may include, for example, a control for causing the light emitting unit 23 to emit light. Here, too, the notification control may be any control that notifies the existence of the speed measuring device by a method that the user can recognize.

<1-3. Modification example of the first embodiment>
The control unit 11 may further perform the following control.
<1-3-1. Notification according to the number of pulses>
When the speed measuring device 30 emits light having a pulse waveform, it is also useful to refer to the number of pulses in detecting the speed measuring device 30. FIG. 15 is a diagram showing an example of the waveform of the pulsed light Lout received by the electronic device 10. FIG. 15A shows a case where the distance between the electronic device 10 and the speed measuring device 30 is relatively large, and FIG. 15B shows a case where the distance between the electronic device 10 and the speed measuring device 30 is relatively small. As shown in FIG. 15A, when the distance between the speed measuring device 30 and the electronic device 10 is relatively large, the pulsed light Lout traveling in the direction of the electronic device 10 can be received, but the speed measuring device 30 on the road can receive the pulse light Lout. Pulsed light in a direction propagating only in a close position (for example, right beside the velocity measuring device 30) is not received. Therefore, the light receiving period Rx1 of the pulsed light Lout is relatively shorter than the non-light receiving period Rx2. As shown in FIG. 15B, when the distance between the speed measuring device 30 and the electronic device 10 is relatively small, the pulsed light Lout traveling in the direction of the electronic device 10 can be received, and the speed measuring device 30 on the road. It can also receive pulsed light in the direction propagating only at a position close to. Therefore, the light receiving period Rx1 of the pulsed light Lout is relatively longer than the non-light receiving period Rx2. Further, it is considered that the number of pulses decreases immediately after the vehicle 40 passes the position of the speed measuring device 30. Actually, the relationship of Rx1 << Rx2 may be satisfied.

Therefore, the control unit 11 may perform notification control according to the number of pulses. The control unit 11 may change the notification level according to, for example, the number of pulses included in the light receiving period of the pulsed light. The notification level is an index of how important the content of the notification is to the user, and may be paraphrased as the alarm level in the present embodiment. The control unit 11 specifies the number of pulses based on at least the amount of light received by the first light receiving element 122. For example, the control unit 11 raises the notification level because it is close to the speed measuring device 30 during the period when the number of pulses is equal to or higher than the threshold value or the period when the number of pulses is increasing. The control unit 11 lowers the notification level because it is far from or away from the speed measuring device 30 during the period when the number of pulses is less than the threshold value or the period when the number of pulse widths is decreasing. The control unit 11 changes the notification method according to the notification level. For example, the control unit 11 may change the message to be displayed on the display unit 13, change the notification sound output from the speaker 14, or change the emission color of the light emitting unit 23 according to the notification level.

Further, the control unit 11 may estimate the distance from the number of pulse widths and notify according to the distance. For example, as shown in FIG. 16, the control unit 11 may estimate the position of the speed measuring device 30 from the number of pulse widths and display it on the map. In this example, the icon P indicates the position of the speed measuring device 30. As described above, the control unit 11 can notify the user according to the positional relationship between the light receiving unit 12 and the speed measuring device 30.

By the way, as shown in FIG. 17, when another vehicle is present in front of the vehicle 40, the vehicle C traveling in front may obstruct all or part of the pulsed light Lout. In this case, the positional relationship may not be accurately specified even by referring to the number of pulses. Therefore, the control unit 11 detects the presence or absence of another vehicle C in front of the vehicle 40 within a predetermined range. When the other vehicle C does not exist, the control unit 11 may perform notification control according to the number of pulses, and when the vehicle C exists, the control unit 11 may stop the notification control. It may be said that stopping the control for notifying according to the number of pulses does not change the content of the control for notifying according to the number of pulses. Further, the electronic device 10 may stop the notification control according to the number of pulses when the inter-vehicle distance is less than the threshold value, and may perform this notification control when the distance is equal to or more than the threshold value. The method of detecting the vehicle C is not particularly limited, but there is a method of using the in-vehicle camera 50. The in-vehicle camera 50 is a camera used for, for example, a drive recorder, and here, the front of the vehicle 40 is imaged.

FIG. 18 is a flowchart showing the operation of the control unit 11 of the electronic device 10 in this case. The control unit 11 acquires an captured image from the vehicle-mounted camera 50 via the communication unit 17 (step S21). Next, the control unit 11 analyzes the captured image (step S22). The algorithm for analyzing the captured image does not matter, but there is, for example, a pattern matching method. Then, the control unit 11 determines whether or not there is a vehicle in front (step S23). If it is determined as "NO" in step S23, the control unit 11 determines that the notification control is performed according to the number of pulses (step S24). In this case, the control unit 11 performs processing such as rewriting the flag to a value indicating that control is performed according to the number of pulses. If it is determined as "YES" in step S23, the control unit 11 determines that the notification control according to the number of pulses is stopped (step S25). In this case, the control unit 11 performs processing such as rewriting the predetermined flag to a value indicating that control is not performed according to the number of pulses. Here, the vehicle in front of the vehicle 40 was detected, but it may be behind the vehicle 40 or the like. The electronic device 10 may include an in-vehicle camera 50. As described above, the possibility of misidentifying the positional relationship between the light receiving unit 12 and the speed measuring device 30 due to the presence of another vehicle C is reduced.

<1-3-2. Control according to pulse width or pulse interval>
When the speed measuring device 30 emits pulsed light, it is also useful to refer to the pulse width or the pulse interval in detecting the speed measuring device 30. The speed measuring device 30 emits pulsed light having a specific wavelength at a predetermined duty ratio. Further, from the viewpoint of safety, the duty ratio of the pulsed light is set to less than a predetermined value. Therefore, the control unit 11 may determine whether or not the speed measuring device 30 exists based on the predetermined pulse width or pulse interval and the pulse width or pulse interval of the received light. For example, the control unit 11 determines that the speed measuring device 30 exists when it is included within a certain range from the reference pulse width or pulse interval, but determines that it does not exist in other cases. The control unit 11 specifies the pulse width or the pulse interval based on at least the amount of light received by the first light receiving element 122. As described above, the control unit 11 can reduce the notification that the ambient light is mistaken for the light from the light emitting device.

<1-3-3. Control according to the intensity of pulsed light>
It is also useful to refer to the intensity of the pulsed light of the received light in detecting the speed measuring device 30. The closer the vehicle 40 is to the speed measuring device 30, the stronger the intensity of the pulsed light, and the farther away the vehicle 40 is, the smaller the distance is. Therefore, the control unit 11 may change the notification level according to the amount of pulsed light received by the first light receiving element 122. For example, the control unit 11 may raise the notification level when the intensity of the pulsed light is increasing, and lower the notification level when the intensity of the pulsed light is decreasing. Further, when the received amount of pulsed light is less than the threshold value, the control unit 11 may determine that the speed measuring device 30 does not exist. As described above, the control unit 11 can notify the user according to the positional relationship between the light receiving unit 12 and the speed measuring device 30.

As the ambient light, there may also be light used in a sensor for detecting another vehicle, which is exemplified by an inter-vehicle sensor. In such light, light having the same frequency as the pulsed light Lout may be used. Even in such a case, it can be expected that the possibility of false alarm is reduced by referring to the pulse interval of the light received by the electronic device 10 or the intensity of the pulsed light.

<1-3-4. Notification of presence / absence of imaging>
After performing the notification control, the control unit 11 may perform control to notify that the image has been captured or that the light has not been captured, depending on whether or not a predetermined light has been detected. When an image is taken by the image pickup unit 32, the strobe 33 emits light. Therefore, after performing the notification control, the control unit 11 may further notify that the image has been taken when the light of the strobe 33 is detected. Alternatively, if the control unit 11 does not detect the light of the strobe 33 after performing the notification control, it may notify that the image has not been taken. This allows the user to know whether the vehicle 40 has been imaged. The light receiving from the strobe 33 may be performed by using the light receiving unit 12, or another light receiving unit may be used.

[2. Second Embodiment]
In this embodiment, the electronic device 10 has a function of notifying the presence of the speed measuring device 30 even when the pulsed light and the microwave are not received. The electronic device of this embodiment may or may not have a part or all of the functions of the first embodiment described above.

<2-1. Configuration of the second embodiment>
FIG. 19 is a diagram illustrating an outline of the system of the present embodiment. As shown in FIG. 19, there are various types of roads. For example, on the road Ar1 that is also used for school roads called green belts, it is particularly important to observe the speed limit of the vehicle 40, and there is a possibility that the speed measuring device 30 will be installed on other types of roads. It is considered to be higher than Ar2. Therefore, the control unit 11 may notify the presence of the speed measuring device 30 when the electronic device 10 is located on a road of a predetermined type.

<2-2. Operation of the second embodiment>
FIG. 20 is a flowchart showing the operation of the control unit 11 of the electronic device 10. The control unit 11 acquires position information from the GPS receiving unit 16 (step S31). Next, the control unit 11 determines whether or not the current position indicated by the position information is within the predetermined area (step S32). Here, the control unit 11 determines whether or not the vehicle 40 is on the green belt based on the current position and the data stored in the storage unit 18. When the control unit 11 determines "YES" in step S32, the control unit 11 performs notification control (step S33). The notification control includes, for example, a control for displaying the notification screen on the display unit 13.

FIG. 21 is a diagram showing an example of a notification screen. The notification screen shown in FIG. 21 is a screen in which the window W3 is superposed on the map screen described above. In the window W3, an icon M3 indicating the existence of the speed measuring device 30 and a message indicating the existence of the speed measuring device such as "It is in the caution area for speed control" are arranged. The icon M3 is an icon that allows the user to recognize that the speed control point is performed based on the position information. That is, for example, the icon M3 is different from the icons M1 and M2. The notification control may include a control for outputting the notification voice from the speaker 14. In this case, the control unit 11 may output the voice "It is within the caution area for speed control" from the speaker 14. The notification control may include controls other than these, and may include, for example, a control for causing the light emitting unit 23 to emit light. The predetermined area is not limited to the green belt, and may be a one-way road or another type of road.

In this way, the existence of the light emitting device can be notified based on the position information, so that the existence can be notified without receiving the pulsed light from the speed measuring device 30.

[3. Third Embodiment]
In this embodiment, the electronic device 10 has a plurality of light receiving units that receive pulsed light.

FIG. 22 is a block diagram showing an electrical configuration of the electronic device 10. In this example, the electronic device 10 includes three light receiving units 12A, 12B, and 12C. Each configuration of the light receiving unit 12A, 12B, 12C may be the same as that of the light receiving unit 12 except for the characteristics of the wavelength selection unit. In FIG. 22, the display unit 13 to the cable terminal unit 24 described with reference to FIG. 6 are not shown.

FIG. 23 is a diagram showing the characteristics of the first wavelength selection unit 121 and the second wavelength selection unit 123 of the light receiving units 12A, 12B, and 12C of this embodiment. FIG. 23 (a) corresponds to the light receiving unit 12A, FIG. 23 (b) corresponds to the light receiving unit 12B, and FIG. 23 (c) corresponds to the light receiving unit 12C. As shown in FIGS. 23 (a) to 23 (c), the wavelength of the pulsed light to be received is different in each of the light receiving units 12A, 12B, and 12C. As shown by a solid line in FIG. 23A, the first wavelength selection unit 121 of the light receiving unit 12A transmits light in a wavelength region including a specific wavelength λout1, in this case, a wavelength region from the wavelength λ11a to the wavelength λ11b. Blocks light in a wavelength region different from that of. As shown by a broken line in FIG. 23A, the second wavelength selection unit 123 blocks light in a wavelength region including a specific wavelength λout1, here in a wavelength region from wavelength λ21a to wavelength λ21b, and has a wavelength different from this. Transmits light in the area. As shown by a solid line in FIG. 23B, the first wavelength selection unit 121 of the light receiving unit 12B transmits light in a wavelength region including a specific wavelength λout2, in this case, a wavelength region from the wavelength λ12a to the wavelength λ12b. Blocks light in a wavelength region different from that of. As shown by a broken line in FIG. 23B, the second wavelength selection unit 123 blocks light in a wavelength region including a specific wavelength λout2, in which wavelength region from wavelength λ22a to wavelength λ22b, and has a wavelength different from this. Transmits light in the area. As shown by a solid line in FIG. 23 (c), the first wavelength selection unit 121 of the light receiving unit 12C transmits light in a wavelength region including a specific wavelength λout3, in which a wavelength region from wavelength λ13a to wavelength λ13b is transmitted. Blocks light in a wavelength region different from that of. As shown by a broken line in FIG. 23 (c), the second wavelength selection unit 123 blocks light in a wavelength region including a specific wavelength λout3, in which wavelength region from wavelength λ23a to wavelength λ23b, and has a wavelength different from this. Transmits light in the area. λout1, out2, and out3 are, for example, 850 nm, 905 nm, and 950 nm, but are not limited to these, and may be 1900 nm.

When the speed measuring device 30 is detected based on the first signal Sigma1 and the second signal Sigma2 from any of the light receiving units 12A, 12B, and 12C, the control unit 11 notifies that the speed measuring device 30 exists. .. According to this embodiment, even if there are a plurality of speed measuring devices 30 having different wavelengths of light emitted by the electronic device 10, or the wavelength of light emitted by the speed measuring device 30 is changed, the speed measuring device 30 is present. Can be notified.

The characteristics of the plurality of light receiving units 12 may be the same. In this case, as shown in FIG. 24, the light receiving units 12A, 12B, and 12C may be provided at different positions of the vehicle 40. Here, the light receiving portion 12A is provided on the left front portion, the light receiving portion 12B is provided on the center front portion, and the light receiving portion 12C is provided on the right front portion. Thereby, the arrival direction of the laser can be estimated based on the light receiving timing of the laser in the light receiving units 12A, 12B, and 12C. For example, if it arrives from the left front, the light receiving timing of the light receiving unit 12A is relatively early, and if it arrives from the right front, the light receiving timing of the light receiving unit 12C is relatively early. Further, the control unit 11 may notify the user of the direction in which the pulsed light has arrived.

Further, the speed measuring unit 31 emits pulsed light to a mirror rotating at a constant speed, and emits pulsed light Lout reflected by the mirror. Therefore, for the light receiving timing of the pulsed light Lout in each of the light receiving units 12A, 12B, 12C, for example, the rotation speed of the mirror, the positions of the light receiving units 12A, 12B, 12C, and the speed measurement of the light receiving units 12A, 12B, 12C. A difference appears depending on the distance from the device 30. Therefore, the control unit 11 may detect the speed measuring device 30 based on the light receiving timing of the pulsed light Lout in the light receiving units 12A, 12B, and 12C.

The light receiving units 12A, 12B, and 12C may receive different directions of light. For example, the orientation of the light receiving element may be different by 20 degrees between the light receiving units 12A, 12B, and 12C. As a result, there is a possibility that a decrease in detection accuracy due to the installation position of the speed measuring device 30 can be suppressed. In this embodiment, the number of light receiving units may be two or four or more.

[4. Configuration of light receiving unit 12]
Next, a configuration example of the light receiving unit 12 applicable to each of the above-described embodiments will be described.
FIG. 25 is a diagram showing a circuit configuration example of the light receiving unit 12. The first light receiving element 122 is a photodiode PD1 here. Light passing through the first wavelength selection unit 121 is incident on the light receiving surface of the photodiode PD1. The cathode of PD1 is connected to the power supply line on the high potential side, and the anode is connected to one end of the resistor R1. The other end of the resistor R1 is grounded. The input end of the output control circuit A1 is commonly connected to the anode of the photodiode PD1 and one end of the resistor R1. The output end of the output control circuit A1 is connected to the input terminal on the negative electrode side of the differential amplifier AMP. The output control circuit A1 is, for example, an amplifier that adjusts a signal level. The second light receiving element 124 is a photodiode PD2 here. Light passing through the second wavelength selection unit 123 is incident on the light receiving surface of the photodiode PD2. The cathode of the photodiode PD2 is connected to the power supply line on the high potential side, and the anode is connected to one end of the resistor R2. The other end of the resistor R2 is grounded. The input end of the output control circuit A2 is commonly connected to the anode of the photodiode PD2 and one end of the resistor R2. The output end of the output control circuit A2 is connected to the input terminal on the positive electrode side of the differential amplifier AMP. The output control circuit A2 is, for example, an amplifier that adjusts the signal level. From the output end of the differential amplifier AMP, a signal corresponding to the difference in the amount of light received by the photodiodes PD1 and PD2 is output. The control unit 11 detects the speed measuring device 30 based on this difference. The control unit 11 may detect the speed measuring device 30 based on the signal after being amplified by the differential amplifier AMP.

[5. Appearance configuration of electronic device 10]
FIG. 26 is a six-view view showing an example of the external configuration of the electronic device 10. In this example, the illuminance sensor 201 of the display unit 13, the light emitting unit 23, and the sensor unit 20 is provided on the front surface of the housing of the electronic device 10. The speaker 14 is provided so as to output sound from the upper end surface of the housing 100. A mounting portion 21 (that is, an SD card slot) for mounting an SD card (registered trademark) is provided on the right end surface of the housing 100. A light receiving portion 12 is provided on the upper right portion of the back surface of the housing 100. Further, a power switch 221 and a DC jack 222 of the power supply unit 22 are provided in the lower left portion of the back surface of the housing 100. The area 104 is an area in which the model name and the serial number are written.

[6. Other Embodiments of Notification Control Performed by Electronic Device 10]
Next, another embodiment of information notification control performed by the electronic device 10 will be described. In the following notification control, the above-mentioned notification control may be appropriately combined.
<6-1. Notification of pulsed light Lout (fixed type)>
The control unit 11 performs the first notification control for notifying the existence of the fixed speed measuring device 30. FIG. 27 is a diagram showing an example of a notification screen displayed when the electronic device 10 receives the pulsed light Lout from the fixed speed measuring device 30. As shown in FIG. 27, this notification screen is a screen in which the icon I11 indicating the position of the vehicle 40 and the information display areas TA1, TA2, TB1 and TB2 are arranged on the map M11 in an overlapping manner. The information display areas TA1 and TA2 are displayed when the pulsed light Lout is received, respectively. The information display area TA1 is arranged at the lower right of the display screen. The information display area TA1 displays the attributes of the speed measuring device 30 and the state of the vehicle 40. The information display area TA1 displays the character string TA11 of "laser" meaning that the speed measuring device 30 corresponds to the optical method and the icon TA12 imitating the speed measuring device 30 as attributes of the speed measuring device 30. The information display area TA1 further displays a character string TA13 (here, 60 km / h) indicating the current speed of the vehicle 40 as the state of the vehicle 40. In this way, the electronic device 10 can make the user recognize at least one of the attributes of the speed measuring device 30 and the state of the vehicle 40. The attributes of the speed measuring device may be other attributes such as the estimated distance from the vehicle 40. When the notification level can be specified, the information display area TA1 may display the notification level. The state of the vehicle 40 may indicate other running states such as the engine speed in addition to the speed.

The information display area TA2 is arranged at the lower left of the display screen. The information display area TA2 displays an animation image including an image imitating the speed measuring device 30. An animation image is an image that can give the viewer the impression that the image is moving by displaying a plurality of still images (frames) while continuously switching them at predetermined time intervals. .. In this way, the electronic device 10 can easily make the user recognize that the speed measuring device 30 in which the vehicle 40 is approaching exists. The information display area TB1 is arranged in the upper right part of the display screen and displays the address of the current position. The information display area TB2 is arranged in the upper left part of the display screen and displays the current time. The control unit 11 may perform a predetermined voice notification in addition to the display notification.

28 and 29 are diagrams showing an example of an animation image displayed in the information display area TA2. In FIGS. 28 and 29, the images of each frame are displayed in the order indicated by the arrows. When the image of the rightmost frame at the bottom of FIG. 28 is displayed, the image of the leftmost frame at the top of FIG. 29 is displayed next. When the image of the rightmost frame at the bottom of FIG. 29 is displayed, the image of the leftmost frame at the top of FIG. 28 is displayed again. As shown in FIG. 28, the animation images include an image TA21 showing the side of the road, an image TA22 imitating a speed measuring device, and an image TA23 visually representing a region irradiated with pulsed light emitted from the speed measuring device. And include. As shown in FIGS. 28 and 29, in the animated image, the speed measuring device is approached with the passage of time, and after the closest approach, the speed measuring device is viewed from a position far away from the speed measuring device. The image shown (see the frame surrounded by the broken line) is displayed. Then, in the animation image, the appearance of approaching the speed measuring device with the passage of time is displayed again. The control unit 11 displays an animation in which the images of each frame are displayed in the above-mentioned order during the period during which the pulsed light Lout is received. When the control unit 11 ceases to detect the presence of the optical speed measuring device 30, the control unit 11 stops the notification immediately or after a predetermined time. This predetermined time may be, for example, 3 seconds. The first frame in the animation image may be an image (see the frame surrounded by a broken line) showing how the speed measuring device is viewed from the position farthest from the speed measuring device.

<6-2. Notification of pulsed light Lout (mobile)>
The control unit 11 performs a second notification control for notifying the existence of the mobile speed measuring device 30. The second notification control is a notification control different from the first notification control. FIG. 30 is a diagram showing an example of a notification screen displayed when the electronic device 10 receives the pulsed light Lout from the mobile speed measuring device 30. As shown in FIG. 30, this notification screen is a screen in which the icon I11 indicating the position of the vehicle 40 and the information display areas TA1, TA3, TB1 and TB2 are arranged on the map M11 in an overlapping manner. The information display areas TA1, TB1 and TB2 are the same as the information display areas TA1, TB1 and TB2 described with reference to FIG. 27. The information display area TA3 is displayed when the pulsed light Lout is received. The information display area TA3 is arranged at the lower left of the display screen. The information display area TA1 displays the attributes of the speed measuring device 30 and the state of the vehicle 40. The information display area TA3 displays an animation image including an image imitating the speed measuring device 30. The control unit 11 may perform a predetermined voice notification in addition to the display notification. Further, an icon indicating the position of the speed measuring device 30 may be arranged on the map M11.

31 and 32 are diagrams showing an example of an animation image displayed in the information display area TA3. In FIGS. 31 and 32, the images of each frame are displayed in the order indicated by the arrows. When the image of the rightmost frame at the bottom of FIG. 31 is displayed, the image of the leftmost frame at the top of FIG. 32 is displayed next. When the image of the rightmost frame at the bottom of FIG. 31 is displayed, the image of the leftmost frame at the top of FIG. 32 is displayed again. As shown in FIG. 31, in the animation image, the image area is divided into left and right by using diagonal lines, and in the left area, an image TA31 showing the periphery of the road, an image TA32 imitating a speed measuring device, and an image TA32. In the area on the right side, an image T34 showing the periphery of the road, an image TA35 imitating a speed measuring device, and an image TA35 as a target and surrounding the target image TA33 are arranged. It is an image in which the image TA36 is arranged. As shown in FIGS. 31 and 32, in the animation image, the size of the target images TA33 and TA36 changes periodically as they approach the speed measuring device with the passage of time and repeatedly enlarge and reduce the target images TA33 and TA36. After the closest approach to the speed measuring device, an image showing how the speed measuring device is viewed from a position far away from the speed measuring device is displayed. Then, again, the appearance of approaching the speed measuring device with the passage of time is displayed. During the period during which the pulsed light Lout is received, an animation in which the images of each frame are displayed in the above-mentioned order is displayed. When the control unit 11 ceases to detect the presence of the optical speed measuring device 30, the control unit 11 stops the notification immediately or after a predetermined time. This predetermined time is preferably 3 seconds. The first frame in the animation image may be an image showing how the speed measuring device is viewed from the position farthest from the speed measuring device.

<6-3. Notification of radar system>
The control unit 11 performs a third notification control for notifying the existence of a radar-type speed measuring device in response to receiving the micro radio wave. FIG. 33 is a diagram showing an example of a notification screen when the electronic device 10 receives a light received by the radar type speed measuring device. As shown in FIG. 33, this notification screen has an icon I11 indicating the position of the vehicle 40, an icon I12 indicating the installation position of the radar type speed measuring device, and information display areas TA4, TA5, TB1 on the map M11. It is a screen in which TB2 is arranged in an overlapping manner. The information display areas TB1 and TB2 are the same as the information display areas TB1 and TB2 described with reference to FIG. 27. The information display area TA4 displays the attributes of the speed measuring device and the state of the vehicle 40. The information display area TA4 is an attribute of the speed measuring device, "radar" which means that it corresponds to the radar system, and a character string "Lv.5" which indicates the notification level according to the intensity of the radio wave from the speed measuring device. The TA41 and the icon TA42 indicating that the speed measuring device is a radar type are displayed. The information display area TA4 displays a character string TA43 (here, 88 km / h) indicating the current speed of the vehicle 40 as the state of the vehicle 40. The information display area TA5 is arranged at the lower left of the display screen. The information display area TA5 displays an animation image including an image imitating a speed measuring device. The control unit 11 may perform a predetermined voice notification in addition to the display notification.

34 and 35 are diagrams showing an example of an animation image displayed in the information display area T5 of FIG. 33. In FIGS. 34 and 35, the images of each frame are displayed in the order indicated by the arrows. When the image of the rightmost frame at the bottom of FIG. 34 is displayed, the image of the leftmost frame at the top of FIG. 35 is displayed next. When the image of the rightmost frame at the bottom of FIG. 35 is displayed, the image of the leftmost frame at the top of FIG. 34 is returned and displayed. As shown in FIGS. 34 and 35, the animated image includes an image TA51 showing the side of the road, an image TA52 imitating a speed measuring device, and an annular image TA53 imitating a microwave emitted from the speed measuring device. .. As shown in FIGS. 34 and 35, the animated image approaches the speed measuring device with the passage of time, and the image TA53 is repeatedly enlarged and reduced, and the size of the animated image is periodically changed. It is an image that approaches the direction of. In the animation image, an image (see the frame surrounded by a broken line) showing how the speed measuring device is viewed from a position far away from the speed control device after the closest to the speed measuring device is displayed. Then, in the animation image, the appearance of approaching the speed control device with the passage of time is displayed again. During the period during which the radar-type speed measuring device is detected, an animation in which images of each frame are displayed in the above-mentioned order is displayed. When the control unit 11 ceases to detect the presence of the radar-type speed measuring device, the control unit 11 stops the notification immediately or after a predetermined time. This predetermined time is preferably 3 seconds. The period from when the presence of the speed measuring device is no longer detected until the notification is stopped may be the same for the optical system and the radar system, but may be different. The first frame in the animation image may be an image (see the frame surrounded by a broken line) showing how the speed measuring device is viewed from the position farthest from the speed measuring device.

FIG. 36 is a diagram showing the relationship between the received microwave (referred to as “radar wave” in FIG. 36) and the notification method. The control unit 11 identifies the received radar wave, and makes the broadcast control different according to the identified result. As shown in FIG. 36 (a), the radar waves include stealth waves that emit radio waves only at the moment measured by a predetermined stealth control device, normal radar waves, new radar waves corresponding to K band and X band, and cancellation. There is a notice. Cancellation notification is based on the radar method when the GPS position information is automatically registered when passing through a place that emits radio waves and gives an erroneous alarm due to automatic doors, etc., and when radio waves are received during the second and subsequent passages. This is a function to cancel the notification. As shown in FIG. 36A, the control unit 11 changes the emission color of the light emitting unit 23 according to the notification level. Further, as shown in FIG. 36B, the control unit 11 changes the notification sound (for example, electronic sound) emitted from the speaker 14 according to the distance between the electronic device 10 and the microwave generation source.

<6-4. Notification of other types of speed measuring devices>
In addition to this, when the speed measuring device is detected, the control unit 11 displays an information display area corresponding to the detection method at the lower right of the notification screen. As shown in FIG. 37 (a), in the case of the LH system, the information display area TA6 is displayed. As shown in FIG. 37 (b), in the case of the loop coil, the information display area TA7 is displayed. The control unit 11 may display the animation image for the speed measurement method of the other method, but may not display the animation image in some or all of the methods.

<6-5. Notification of collision warning>
As shown in FIG. 39A, the electronic device 10 cooperates with the sensor device 90 to notify the collision alarm. The collision warning is an example of notification according to the positional relationship between the vehicle 40 and another vehicle, and is a function of warning that the vehicle may collide with another vehicle. The sensor device 90 has a function of an inter-vehicle distance sensor that detects a distance from another vehicle existing in front. The inter-vehicle distance sensor detects the inter-vehicle distance by an infrared method and outputs the detected inter-vehicle distance to the electronic device 10. The sensor device 90 and the electronic device 10 are connected via a wired or wireless bribe. The control unit 11 performs the fourth notification control according to the positional relationship between the vehicle 40 and another vehicle. The positional relationship is specified here based on the inter-vehicle distance. The fourth notification control is a control for notifying a collision alarm.

FIG. 38 is a diagram showing an example of a notification screen relating to a collision warning. FIG. 38A is a screen related to a collision warning, which warns when approaching a stopped preceding vehicle. On this screen, the icon I11 indicating the position of the vehicle 40, the information display area TC11, and the information display area TC12 indicating the current speed are displayed on the map M11. FIG. 38B is a screen related to a start warning, which warns when the preceding vehicle has started and the vehicle 40 has stopped. On this screen. On the map M11, an icon I11 indicating the position of the vehicle 40, an information display area TC21, and an information display area TC22 indicating the current speed are displayed. FIG. 38 (c) is a screen related to an excessively close warning, which warns when the distance between the vehicle 40 and the preceding vehicle becomes less than the threshold value during traveling. On this screen, the icon I11 indicating the position of the vehicle 40, the information display area TC31, and the information display area TC32 indicating the current speed are displayed on the map M11. The control unit 11 may perform notification by sound in addition to the screen display described above in the notification regarding the collision alarm. The notification time may be, for example, 5 seconds, but may be any other time. As shown in FIG. 38 (d), the control unit 11 may change the sound according to the content of the notification.

<6-6. Notification of alarms related to aside / dozing driving ＞
The control unit 11 performs a fifth notification control for notifying the state of the occupants of the vehicle 40 based on the image of the camera that images the passenger compartment of the vehicle 40. The occupant is a person who is in the vehicle 40 and may be a driver, but may be another occupant. As shown in FIG. 39 (a), the electronic device 10 cooperates with the camera 70 to notify an alarm regarding aside and drowsy driving. The camera 70 is a camera that images the interior of the vehicle. The camera 70 detects the state of the user based on the captured image, and outputs information according to the state to the electronic device 10. The camera 70 and the electronic device 10 are connected via a wired or wireless bribe. The camera 70 captures at least the user's face. The camera 70 detects the direction of the user's face and the direction of the line of sight, and notifies the information according to the detection result. The camera 70 uses a predetermined mounting member above the windshield 42 higher than the user's line of sight. It is attached. The camera 70 may be mounted in the rearview mirror 43, or the dashboard 41, or elsewhere.

As shown in FIG. 39B, the control unit 11 gives a sideways warning when the user's face is turned sideways by a predetermined angle from the front. FIG. 40A is an example of a notification screen for warning aside. On this screen, the icon I11 indicating the position of the vehicle 40, the information display area TD11, and the information display area TD12 indicating the current speed are displayed on the map M11. FIG. 39 (c) is an example of a screen related to doze caution. When both eyes are closed for about 1 second or longer, the control unit 11 displays a notification screen warning of doze operation as shown in FIG. 40 (b). .. On this screen, the icon I11 indicating the position of the vehicle 40, the information display area TD21, and the information display area TD22 indicating the current speed are displayed on the map M11. When both eyes are closed for about 3 seconds or more ,. As shown in FIGS. 39 (c) and 40 (c), the control unit 11 changes the background color to display a notification screen warning of drowsy operation. On this screen, the icon I11 indicating the position of the vehicle 40, the information display area TD31, and the information display area TD32 indicating the current speed are displayed on the map M11. In addition to the screen display described above, the control unit 11 also performs a sound notification in the notification regarding the alarm related to the sideways / dozing operation. As shown in FIGS. 39 (c) and 41, the control unit 11 may change the sound related to the alarm according to at least one of the time when the eyes are closed and the number of times the alarm is issued.

<6-7. GPS warning>
Next, the GPS warning will be described. The GPS warning is a control for notifying when the position measured by the GPS receiving unit 16 has a predetermined positional relationship with the notification target object. The predetermined relationship is that the vehicle and the object to be notified are close to each other to a predetermined distance. GPS warning is <6-2. The notification control described in Notification regarding pulsed light Lout (mobile)> may be included. FIG. 42 is a diagram showing a GPS warning. There are various notification methods depending on the settings. When the alarm 1000m switching (initial value) is set, the control unit 11 may display the alarm screen from the standby screen at a time point 1 km before the notification target object. When the alarm 500m switching is set, the control unit 11 may display the alarm screen from the standby screen at a time before 500 of the notification target object. When the standby screen is fixed, the control unit 11 may display the standby screen regardless of the distance to the notification target object.

In the case of GPS warning, the control unit 11 notifies the notification target such as "left direction" or "right direction" when the notification target exists in a direction of 25 degrees or more from the front to the left and right with respect to the traveling direction of the vehicle 40. It is advisable to add a voice indicating the direction of the object to perform the notification. In this way, the user can easily understand the direction of the notification target object.

<6-8. Notification control>
The control unit 11 may display the above-mentioned annotation image regardless of the location and time of the electronic device 10 when the pulsed light Lout is received, but changes the animation image according to at least one of the location and time. You may do so. The animation image may be displayed using a photograph of the site where the speed control device is installed or an image represented by CG.

FIG. 43 is a table for explaining the notification control by the electronic device 10. In FIG. 43, “◯” indicates that the notification control is permitted to be executed in parallel with the first notification control or the second notification control for notifying the existence of the optical speed measuring device, and “x” indicates the notification control. Indicates that the notification control is not permitted. The control unit 11 may stop the third notification control during the period during which the first notification control or the second notification control is being performed. In this way, when notifying the existence of the speed measuring device 30, it is possible not to notify the existence of the radar type speed measuring device. Further, even if the control unit 11 detects the presence of another type of speed measuring device during the period of displaying the notification screen for receiving the pulsed light, it is preferable not to notify the presence of the speed measuring device. The other method is preferably a radar method, and it is preferable that microwaves are received. When the pulsed light has less false detection of the speed measuring device than the radar wave, the accuracy of the notification of the speed measuring device is improved. Further, if the presence of any of the speed measuring devices is notified, the user consciously tries to drive safely, so that there is little inconvenience.

The control unit 11 may perform the fourth notification control in parallel with the first notification control or the second notification control. As shown in FIG. 44, the control unit 11 may perform notification regarding the collision warning during the period in which the notification screen for receiving the pulsed light is displayed. This is based on the idea that collision alerts are high priority alerts. For example, when the control unit 11 issues a collision warning while displaying the notification screen for receiving the pulsed light, the control unit 11 causes the display shown in FIG. 44 to be displayed. In this example, the information display areas TA1, TA2, and TC1 are displayed at the same time. In addition, it is advisable to perform the start warning, the too close warning, and the lane departure warning in the same manner. In this way, the control unit 11 can issue a collision warning even when the own vehicle is approaching the speed measuring device 30 when it becomes necessary to notify the collision warning.

The control unit 11 may stop the fifth notification control during the period during which the first notification control or the second notification control is being performed. It is preferable that the control unit 11 does not give an alarm regarding the aside / dozing operation during the period when the notification screen for receiving the pulsed light is displayed. In this way, the control unit 11 can issue a collision alarm even when it is necessary to give an alarm regarding the user's aside or drowsy operation when it becomes necessary to notify the collision alarm.

The control unit 11 may perform the fourth notification control in parallel with the third notification control. When the existence of the radar type speed measuring device is detected and the notification screen is displayed, the collision warning is notified. It is based on the idea that collision warnings are high priority warnings. For example, when the control unit 11 detects a radar type speed device and displays a notification screen and issues a collision warning, the display shown in FIG. 45 is displayed. In this example, the information display areas TA4, TA5 and TC1 are displayed at the same time. In addition, it is advisable to perform the start warning, the too close warning, and the lane departure warning in the same manner. On the other hand, the control unit 11 may stop the fifth notification control during the period during which the third notification control is being performed. In this way, when notifying the presence of the speed measuring device 30, it is possible to prevent an alarm regarding aside / dozing operation.

The notification control of the electronic device 10 may have a relationship other than the relationship shown in the table shown in FIG. 43. When the first event and the second event occur at the same time as the events to be notified, the control unit 11 notifies the first event having a higher priority while the second event having a lower priority than the first event. It is advisable to stop the notification regarding the event of. In this way, it is possible to make it easier for the user to grasp the occurrence of the first event having a high priority. Further, the control unit 11 may simultaneously notify both the first event and the second event. In this way, the user can grasp the information of both the first event and the second event. Further, the control unit 11 may simultaneously notify the occurrence of three or more events. Further, the control unit 11 may match the notification period for the first event and the second event, but may make them different. Further, the combination of the first event and the second event may be predetermined at the design stage or the like, or may be set by the user. Further, when two or more notification controls are performed in parallel, the notification by display is performed in parallel, but at least one of the notifications by sound may be stopped.

Further, when the speed of the vehicle 40 is less than a predetermined speed, the electronic device 10 may not perform notification by one or both of the optical system and the radar system. This is because if the vehicle 40 has a predetermined speed, there are relatively few safety problems and notification is unnecessary. However, when the vehicle 40 is traveling on a road of a predetermined type such as a green belt, the electronic device 10 may perform notification by one or both of the optical system and the radar system. The predetermined speed may be, for example, 30 km / h, but other speeds may be used. In this way, depending on the position of the vehicle 40, if the presence of the speed measuring device 30 should be notified even if the speed of the vehicle 40 is less than a predetermined speed, this can be notified.

Further, it is preferable that the electronic device 10 has a cancel function corresponding to the radar system, but does not have a cancel function corresponding to the optical system. This is because in the case of the optical method, false alarms that may occur in the radar method are unlikely to occur.

Further, the electronic device 10 may further notify the content and timing of the notification of the information regarding the notification target object as shown in the tables shown in FIGS. 46 to 48.

[7. Mechanism of electronic device 10]
FIG. 49 is a perspective view showing an example of the external configuration of the electronic device 10. 50 and 51 are six views showing an example of the external configuration of the electronic device 10. FIG. 50 shows a front view, a top view, a right side view, a bottom view, and a left side view of the electronic device 10. FIG. 51 shows a rear view of the electronic device 10. In this example, the housing 100 of the electronic device 10 is divided into a first housing 1001 located on the front side and a second housing 1002 located on the rear side. An illuminance sensor 201 of a display unit 13, a light emitting unit 23, and a sensor unit 20 is provided on the front surface of the first housing 1001. The display area of the display unit 13 is located in the opening on the front surface of the first housing 1001. The speaker 14 is provided so as to output sound from the upper end surface of the second housing 1002. A mounting portion 21 (that is, an SD card slot) for mounting an SD card is provided on the right end surface of the housing 100. A light receiving portion 12 is provided on the upper right portion of the back surface of the housing 100. Further, a power switch 221 and a DC jack 222 of the power supply unit 22 are provided in the lower left portion of the back surface of the housing 100.

As shown in FIG. 51, a lid portion 1003 is provided on the back surface of the second housing 1002. The lid portion 1003 is provided at a position closer to the upper right of the second housing 1002 when viewed from the back surface. The lid portion 1003 is a lid that can be attached to and detached from the second housing 1002, and is a member that is longer in the left-right direction than in the up-down direction. The lid portion 1003 is a light transmitting portion formed of at least a material that transmits pulsed light Lout. The lid portion 1003 may be formed of the same material as the housing 100, but may be formed of a different material. The lid 1003 is made of resin or other material. The lid portion 1003 is formed of a material that blocks visible light, and may or may not function as a visible light cut filter. The lid portion 1003 may be a translucent or transparent member. Further, instead of the lid portion 1003, a light transmitting portion which is a portion through which at least the pulsed light Lout is transmitted may be formed on the back surface of the housing 100.

FIG. 52 is a rear view showing a state in which the lid portion 1003 is removed from the second housing 1002. As shown in FIG. 52, the first window 101 and the second window 102 are formed in the second housing 1002. The first window 101 and the second window 102 are openings for guiding external light to the inside of the housing 100. However, the first window 101 and the second window 102 may have a member such as a lens that transmits light of at least a specific wavelength. The first window 101 and the second window 102 are arranged at predetermined intervals in the left-right direction. The first window 101 and the second window 102 are circular, but may have other shapes. Pulsed light is incident inside the housing 100 through the first window 101 and the second window 102. When the lid portion 1003 is a translucent or transparent member, the user can visually recognize the first window 101 and the second window 102. In some cases, this has a design appeal.

FIG. 53 is an exploded perspective view of the electronic device 10. As shown in FIGS. 53 (a) and 53 (b), inside the housing 100 of the electronic device 10, the display unit 13, the first board 1010, and the second board 1030 are arranged in this order from the first housing 1001 side. It is contained. The first substrate 1010 is a rectangular substrate that is longer in the horizontal direction than in the vertical direction in a plan view. The display unit 13 is mounted on the first surface on the front side of the first substrate 1010. A control circuit 1331 is mounted on the first surface of the first substrate 1010. The control circuit 1331 may realize a part or all of the functions of the control unit 11. The control circuit 1331 may be, for example, an integrated circuit (IC). Although the number of control circuits 1331 is one here, it may be replaced with two or more control circuits. The microwave receiving unit 15 is mounted on the second surface of the first substrate 1010 opposite to the first surface. The microwave receiving unit 15 has a substantially rectangular parallelepiped shape. Accommodating these members, the second housing 1002 is screwed to the first housing 1001.

FIG. 54 is a rear view showing a state in which the second housing 1002 is further removed from the electronic device 10. 55, 56 and 57 are perspective views showing the internal configuration of the electronic device 10 in this state. The second substrate 1030 is arranged on the back side of the first substrate 1010 so as to overlap the first substrate 1010. The second substrate 1030 is a substantially L-shaped substrate in a plan view. The second substrate 1030 has such a shape because the region where the microwave receiving unit 15 exists is cut out. In this way, it is possible to suppress an increase in the thickness of the electronic device 10 as compared with the case where the second substrate 130 overlaps the microwave receiving unit 15. The light receiving portion 12 is mounted on the first region Ar3 which is long in the vertical direction in the second substrate 1030. A first wavelength selection unit 121 and a first light receiving element 122 are provided facing the first window 101. A second wavelength selection unit 123 and a second light receiving element 124 are provided facing the second window 102.

The second wavelength selection unit 123 and the second light receiving element 124 are housed in the shield case 1031 facing the first wavelength selection unit 121, the first light receiving element 122, and the second window 102. The shield case 1031 is made of, for example, a conductive material (for example, metal), and is a member for preventing the element of the light receiving unit 12 from generating noise affected by electromagnetic waves from the outside. The source of electromagnetic waves is an electrical component such as a drive unit that drives a wiper provided in the vehicle 40. The shield case 1031 has a partition wall for separating the space in which the first light receiving element 122 is housed and the space in which the second light receiving element 124 is housed. This partition also prevents the propagation of pulsed light. In this way, the signals output by the first light receiving element 122 and the second light receiving element 124 are less likely to be affected by electromagnetic noise, as compared with the case where they are not shielded by the conductive material. Further, due to the presence of the partition wall, there is a possibility that the light transmitted through the first wavelength selection unit 121 is received by the second light receiving element 124 and the light transmitted through the second wavelength selection unit 123 is received by the first light receiving element 122. Will be low.

A GPS receiving unit 16 and a speaker 14 are mounted on the second region Ar4 of the second substrate 1030. The second region Ar4 is shorter in the vertical direction than the first region Ar3 and projects upward from the first region Ar3. Among the GPS receiving units 16, the GPS module may be mounted on the first surface on the front side, and the GPS antenna may be mounted on the second surface on the back side. The GPS antenna is arranged above the microwave receiving unit 15 in order to secure the directivity upward. Further, in order to secure a space for the GPS receiving unit 16, the second region Ar4 on the second substrate 1030 projects upward from the first region Ar3. The microwave receiving unit 15 is located below the GPS receiving unit 16 and the speaker 14. The mounting portion 21 is mounted on the left side of the first substrate 1010. Below the mounting unit 21, a power switch 221 of the power supply unit 22, a DC jack 222, and a button battery 223 are provided. The button battery 223 is an internal power source for the electronic device 10. Further, the wireless module 171 of the communication unit 17 is mounted on the front side of the second substrate 1030 and on the opposite side of the first region Ar3.

FIG. 58 shows a photograph of the second substrate 1030. FIG. 58 (a) is a view seen from the back side, and FIG. 58 (b) is a view seen from the front side. The GPS receiving unit 16 is mounted in the area indicated by “(16)” in FIG. 58 (a), and the speaker 14 is mounted in the area indicated by “(14)”. Further, the light receiving portion 12 is mounted in the region surrounded by the white line of the second substrate 1030. FIG. 59 shows the electrical configuration of the light receiving unit 12. The first light receiving element 122 is a photodiode PD1 here. Light passing through the first wavelength selection unit 121 is incident on the light receiving surface of the photodiode PD1. The cathode of PD1 is connected to the power supply line on the high potential side, and the anode is connected to one end of the resistor R1. The other end of the resistor R1 is grounded. The input end of the amplifier IC1 (1/2) is commonly connected to the anode of the photodiode PD1 and one end of the resistor R1. The output end of the amplifier IC1 (1/2) is connected to the input terminal on the negative electrode side of the differential amplifier AMP. The second light receiving element 124 is a photodiode PD2 here. Light passing through the second wavelength selection unit 123 is incident on the light receiving surface of the photodiode PD2. The cathode of the photodiode PD2 is connected to the power supply line on the high potential side, and the anode is connected to one end of the resistor R2. The other end of the resistor R2 is grounded. The input end of the amplifier IC1 (2/2) is commonly connected to the anode of the photodiode PD2 and one end of the resistor R2. The output end of the amplifier IC1 (2/2) is connected to the input terminal on the positive electrode side of the differential amplifier AMP. The amplifier IC1 (1/2) and the amplifier IC1 (2/2) halve the output and output. From the output end of the differential amplifier AMP, a signal corresponding to the difference in the amount of light received by the photodiodes PD1 and PD2 is output. The control unit 11 detects the speed measuring device 30 based on this difference. The control unit 11 may detect the speed measuring device 30 based on the signal after waveform shaping after being amplified by the differential amplifier AMP and further passing through the amplifier Q1 and the amplifier IC2 (2/2).

FIG. 60 is a graph showing an example of the filter characteristics of the first wavelength selection unit 121 and the second wavelength selection unit 123. The first wavelength selection unit 121 is a bandpass filter here. As shown in FIG. 60A, light in a wavelength region including a specific wavelength λout905 nm, which is a target wavelength, is transmitted, and light in other wavelength regions is blocked. The width of the wavelength region through which light is transmitted is, for example, 20 nm, but it is more desirable that the width is narrower than this. The second wavelength selection unit 123 is, for example, a band elimination filter. As shown in FIG. 60B, the second wavelength selection unit 123 blocks light in a wavelength region including a specific wavelength λout and transmits light in a wavelength region other than the non-target wavelength. The width of the wavelength region where light is blocked is, for example, 20 nm, but it is more desirable that the width is narrower than this.

In FIG. 60, the transmittance of the frequency region through which light is transmitted is larger than 80%, and the frequency region at which light is blocked is less than 15%. However, the transmittance may be practically acceptable. The wavelength selection unit preferably exhibits steep characteristics as illustrated in FIG. 60, but may exhibit broader characteristics.

When the second substrate 1030 is further removed from the electronic device 10, the state shown in FIG. 61 is obtained.

[8. Other examples of electronic devices]
FIG. 62 is a perspective view showing an external configuration of the electronic device 80, which is another example of the electronic device. FIG. 63 is a perspective view showing the appearance configuration of the electronic device 80 when viewed from the diagonally right front side with respect to the traveling direction of the vehicle. As shown in FIGS. 62 and 63, the electronic device 80 is a box-shaped device having a substantially rectangular parallelepiped shape. The electronic device 80 does not have a display unit 13 and outputs various signals to an external device via a wired cable 81. The electronic device 80 may communicate with an external device via a wireless communication path. The electronic device 80 is divided into a first housing 801 located above and a second housing 802 located below. A lid 803 is provided on the front side of the electronic device 80. Like the lid 1003, the lid 803 is a light transmitting member made of a material that transmits pulsed light.

64, 65 and 66 are perspective views showing the internal configuration of the electronic device 80. As shown in FIGS. 63 to 65, inside the electronic device 80, the first substrate 810, the second substrate 820, and the third substrate 830 are arranged at a distance from each other from the bottom to the top. .. The button battery 811 is provided on the first substrate 810 and is an internal power source for the electronic device 80. The difference from the conventional electronic device is that the light receiving unit 841 is formed on the fourth substrate 840 so as to receive the pulsed light from the front side in the traveling direction of the vehicle, and the antenna unit of the microwave receiving unit is adjacent to the light receiving unit 841. This is the point where the 850 is arranged. The light receiving unit 841 may have the same configuration as the light receiving unit 12, and is electrically connected to the fourth substrate 840. The fourth substrate 840 is electrically connected to the first substrate 810 via a terminal (not shown). The antenna unit 850 is a portion of the microwave receiving unit that functions as an antenna. The antenna portion 850 is composed of a predetermined pattern formed on the substrate. The processing circuit 851 that processes the signal from the antenna unit 850 of the microwave receiving unit is mounted on the second substrate 820. A GPS receiving unit 860 is mounted above the third substrate 830. Under such a configuration, the electronic device 80 outputs a notification using sound or display to an output destination (for example, a conventional laser detector) connected to the outside via a cable 81 to notify the information. Performs notification control. The function related to this notification may be the same as that of the electronic device 10. The antenna portion 850 is arranged at a position adjacent to the fourth substrate 840. It is preferable that the normal direction of the antenna portion 850 and the normal direction of the fourth substrate 840 intersect, but it is particularly preferable that they are parallel.

In this way, it is possible to provide a technique for notifying the user of the existence of the speed measuring device while reducing the changes from the existing system.

[9. Noise reduction method]
When the noise source is the circuit itself of the light receiving unit 12, it is effective to lower the gain of the amplifier to lower the noise floor. On the other hand, if the C / N ratio in the light receiving portion is improved, the gain of the amplifier can be increased, which is desirable. The noise can come from the amplifier circuit itself, which is random noise. The amplifier circuit refers to the circuit part rather than the photodiode. Therefore, in order to suppress noise, it is preferable to adopt a configuration in which the output of the light receiving unit 12 is inserted into two sets of amplifier circuits (amplifier circuit 1 and amplifier circuit 2). In this example, as shown in FIG. 67, the noise peak exceeding the threshold Th of the amplifier circuit 1 is the peak N1, the peak of the signal when receiving the pulsed light is the peak P1, and the noise peak exceeding the threshold Th of the amplifier circuit 2 is the peak N1. Assuming that the peak N2 and the signal when the pulsed light is received are the peak P2, the probability that N1 and N2 match in time is very low, and P1 and P2 match. Therefore, if both N1 and N2 are detected at the same time and regarded as light reception of pulsed light, it is considered that the reduction of noise is reduced and the detection accuracy is improved. As shown in FIG. 67, if the peak values exceeding the thresholds of the two circuits deviate by setting (P1 + P2) / 2, the peak value can be lowered by adding and dividing by 2. A comparator may be used to determine the presence or absence of such a deviation of the peak value.

In this embodiment, since the amplifier Q1 is the source of noise, it is preferable that the amplifier Q1 can be replaced with the amplifier of the circuit 1 and the amplifier of the circuit 2 and a circuit that halves their outputs. .. Further, an integrating circuit may be provided in the circuit of the light receiving unit 12. Further, the circuit 1 may be integrated by an integrator circuit using a capacitor or the like, the circuit 2 may be left as it is, and a comparator may be provided.

[10. Other embodiments]
(10-1) The electronic device 10 may be a system that issues an alarm when it detects a pattern of a reflective material that appears to have a police officer. The reflector pattern is a reflector pattern that is placed at a predetermined point where a police officer is present. This pattern may be the pattern used for a given signboard or the costume of a police officer. The electronic device 10 may use the vehicle-mounted camera 50 to acquire an image of the front of the vehicle 40 and analyze it to detect the presence of a predetermined reflector pattern. In this way, it is possible to notify the presence of a police officer in a place where there is a high possibility of being present, and it is possible to reduce the possibility of false alarm. The alarm may be given by display, sound or a combination thereof.

In (10-2) and (10-1), the alarm may be a speed control alarm. The speed control warning may be a warning that the speed control point is approaching.

(10-3) As a pattern of the reflective material that makes it appear that the police officer to be detected is present, a horizontal line corresponding to the position of a person's waist, a vertical line corresponding to a baton, and a horizontal position of a helmet. It is preferable that the pattern includes at least two or more of the line corresponding to the line, the line corresponding to the baton, and the line corresponding to the best V shape. For example, it is preferable that the lines are detected in the order of diagonal, horizontal, and vertical from the top.

(10-4) The electronic device 10 may detect the pattern of the reflective material in which the police officer appears to be present, based on the detection of the reflection level corresponding to the retroreflective tape.

(10-5) The electronic device 10 may suppress the detection as a pattern of the reflective material in which the police officer appears to be present at a position higher than the height of a person. As a suppressing method, it is advisable not to detect a portion having a certain height or higher in advance. Further, even if the pattern is detected, if it is above a certain height, it may not be detected. It is also preferable that the height of the person in the vertical direction (for example, within 2 m) includes all the components of the reflector pattern.

In (10-5), it is preferable that the electronic device 10 also excludes the position corresponding to the road surface to prevent the stop line of the road surface from being mistakenly recognized. The stop line on the road surface consists of vertical and horizontal lines, and in some cases the amount of light is the same as that of retroreflection, so it is excluded.

(10-6) The electronic device 10 stores the position information of the place where the pattern of the reflective material that looks like the police officer is installed in advance, and suppresses the alarm at the stored position. It is good to do so.

(10-7) The electronic device 10 may change the mode of the alarm according to the number of detected patterns of the reflective material in which the police officer appears to be present. For example, when one pattern of the reflective material appearing to have the police officer is detected, the crackdown warning as the alarm is not issued, and when a plurality of patterns of the reflective material appearing to have the police officer are detected, the control alarm is not issued. It is advisable to issue a crackdown alarm as the alarm.

(10-8) The electronic device 10 may suppress the alarm when only one pattern of the reflective material appearing to have the police officer is detected within a predetermined time. The electronic device 10 may decide whether to give an alarm based on the number of detections in the window at a predetermined time. The predetermined time is preferably about 2 seconds.

(10-9) It is preferable that the electronic device 10 detects the pattern of the reflective material in which the police officer appears to be present based on the video signal captured by the camera provided in the drive recorder. It may be possible to detect from a distance beyond the detection range of pulsed light.

(10-10) The electronic device 10 does not detect the pattern of the reflective material in which the police officer appears to be present, does not detect the pattern in the rear direction, does not detect the pattern in the overtaking lane in the front direction, and performs the detection in the left side of the traveling lane. It is good to say that.

(10-11) The electronic device 10 has a function of issuing an alarm when an electromagnetic wave (for example, pulsed light or microwave) for measuring the speed of a vehicle for traveling on a road is detected, and the police officer said. Even when the pattern of the reflective material that appears to be present is detected, when the electromagnetic wave for measuring the speed of the vehicle traveling on the road is detected, the speed of the vehicle traveling on the road is detected. It is advisable to give priority to an alarm when an electromagnetic wave for measuring is detected, and to suppress an alarm when a pattern of a reflective material that appears to have a police officer is detected.

(10-12) The electronic device 10 has a function of giving an alarm when an electromagnetic wave for measuring the speed of a vehicle for traveling on a road is detected, and a pattern of a reflective material appearing to have the police officer. When an electromagnetic wave for measuring the speed of a vehicle for traveling on a road is detected, an alarm different from the alarm when it is detected alone is issued (especially, the urgency is higher). It is good to give an alarm indicating.

(10-13) The electronic device 10 is provided with an infrared detection device for detecting the presence or absence of an object, and determines (guesses) the type of crackdown together with the detection of the pattern of the reflective material that appears to have a police officer. It may have a function. If there is no person and there is a reflector, there is a high possibility that it is only Orbis. If there is a person and there is a reflector, there is a high possibility of a wide range of crackdowns including Orbis. The control unit 11 may notify the information based on the determination result of such a type. As a notification, one or both of the display and the voice may be different.

(10-14) When the electronic device 10 recognizes a moving object that matches the pattern of the night police, it may be determined that the electronic device 10 is not a night police sign but a police officer. The control unit 11 cancels the behavior of the own vehicle and calculates it.

(10-15) The electronic device 10 has a function of suppressing (for example, not executing) a night police warning during the daytime (or when it is bright). In particular, it is advisable not to even recognize the night police signboard.

[11. Other embodiments]
Further, other embodiments will be described. [11. The section of [Other Embodiments] may include a structure based on the same idea as the matters described in the other sections.

In the electronic device 10, the portion used for receiving the pulsed light from the speed measuring device 30 may protrude. The electronic device 10 may have, for example, a portion provided with at least a part of the light receiving portion 12 having a shape protruding from the other portions. Hereinafter, specific embodiments of such a configuration will be described.

(11-1) The electronic device 10 projects a light incident portion from the back surface or side surface side of the housing to a position protruding forward in the traveling direction of the vehicle (for example, the normal direction of the display screen of the display unit). You may have. The incident portion is a portion of the electronic device 10 where the light received by the light receiving portion is incident. The incident portion is a portion included in the appearance of the electronic device 10. In the electronic device 10, for example, the portion provided with the lid portion 1003 described above is the incident portion, and the portion provided with the first window 101 or the second window 102 is also the incident portion.

By doing so, since the light can be received in the front, it is possible to make it less susceptible to the influence of obstacles that block the laser beam. In particular, when the structure is such that the light that has passed through the windshield is received, the influence of the light refracted by the windshield from the speed measuring device 30 can be reduced by allowing the incident portion to be installed closer to the windshield. In particular, if this configuration is adopted when the display unit and the light receiving unit are integrated into an integrated housing, it can be easily and easily installed in the vehicle interior, and the above-mentioned influence can be reduced.

In the example of FIG. 68A, the back surface 1004 of the housing 100 of the electronic device 10 has a first portion 10041 and a second portion 1042 projecting forward from the first portion 1041 in the traveling direction of the vehicle. Provided. The first site 1041 is flat. The second portion 1032 has a hemispherical shape here. Part or all of the second portion 1042 corresponds to the incident portion.

The second portion 1042 may be located, for example, above the center of the back surface 1004 in the vertical direction. Compared to the case where it is downward, it may be less affected by an obstacle that blocks the light from the speed measuring device 30. The second portion 1042 is provided on the right side of the center of the rear surface 1004 in the left-right direction when viewed from the rear side in the traveling direction of the vehicle (preferably the side where the vehicle interior exists). Alternatively, the second portion 1042 may be provided on the left side of the center of the back surface 1004 in the left-right direction when viewed from the rear side in the traveling direction of the vehicle. In this case, the incident portion is located at a position on the left side in the traveling direction of the vehicle, which is closer to the speed measuring device 30, which may be desirable from the viewpoint of light reception.

(11-2) The electronic device 10 has an incident portion at a position protruding from the back surface or side surface side of the housing to the left side (or a direction parallel to the display screen of the display unit) with respect to the traveling direction of the vehicle. You may.

(11-3) The electronic device 10 is moved from the back surface or the side surface side of the housing in the front left direction (or the direction intersecting the normal line of the display screen on the display unit 13 and the left direction) in the traveling direction of the vehicle. The incident portion may be provided at a protruding position. In this case, the incident portion may have a surface whose normal direction is diagonally to the left.

In the example of FIG. 68B, on the back surface 1004A of the housing of the electronic device 10, a first portion 1041 and a second portion 10024A protruding forward and leftward in the traveling direction of the vehicle from the first portion 1041A are formed. Provided. The second site 1042A is here columnar. Part or all of the front end side surface 1043 of the second portion 1005B corresponds to the incident portion. The surface 1043 is not a surface parallel to the first portion 1041, but faces an oblique direction with respect to the traveling direction of the vehicle. In this case, the incident portion is located at a position on the left side in the traveling direction of the vehicle, which is closer to the speed measuring device 30, which may be desirable from the viewpoint of light reception.

The surface 1043 may be, for example, a flat surface, but may include a portion of a curved surface facing forward and left (for example, an arc surface or a spherical surface may be provided as the curved surface). The position where the second portion 1042A is provided on the back surface 1004A can be variously modified in the same manner as the position where the second portion 1042 is provided on the back surface 1004.

Under this configuration, at least one of the light receiving elements of the light receiving unit 12 may be provided inside the second portion 1042A, and may be arranged so that the surface 1043 faces.

In the configurations (11-1) to (11-3), the length of the protruding portion (for example, the second portion 1042, 1042A) protruding from the back surface of the housing is larger than the thickness of the housing of the electronic device 10. May be small or large. In the example of FIG. 69A, the back surface 1004B of the housing 100 of the electronic device 10 has a first portion 1041 and a second portion 1042B protruding forward from the first portion 1041 in the traveling direction of the vehicle. Provided. The length of the second portion 1042B in the protruding direction is smaller than the thickness of the housing. In the example of FIG. 69B, the back surface 1004C of the housing 100 of the electronic device 10 has a first portion 1041 and a second portion 1042C projecting forward from the first portion 1041 in the traveling direction of the vehicle. Provided. The length of the second portion 1042D in the protruding direction is larger than the thickness of the housing.

In the configurations (11-1) to (11-3), the portion protruding from the back surface of the housing may be a rectangular parallelepiped shape, a cube shape, a columnar shape, or another columnar shape. Further, the surface at the tip of the protruding portion may be a flat surface, an inclined surface inclined with respect to the surface of the first portion 1041, a curved surface, or a surface having another shape. It is preferable that at least a part of the protruding portion has a semi-cylindrical shape, a spherical surface, a triangular prism shape, a lens shape, a prism shape, or the like so as to change the optical path or to provide light collecting property. It is advisable to provide a sensor at the optical path change destination and the light collection destination.

(11-4) The incident portion may be provided separately from the housing 100. The incident portion may be provided at a portion that physically contacts the housing 100, or may be provided at a portion that does not contact the housing 100. For example, the light incident on the incident portion may be received by the light receiving unit, and the signal corresponding to the received light may be supplied to the control unit 11. In this way, for example, from the viewpoint of visibility of the display unit 13, even if there are restrictions on the change in the position or posture of the housing 100, the light from the speed measuring device 30 can be easily received. The position or orientation of the incident part can be adjusted.

The electronic device includes a connector for connecting a wiring that outputs a signal corresponding to the received light from the "separate body", and the control unit performs notification control based on the signal corresponding to the received light input via the connector. You may go.

As a "separate body" of (11-5) and (11-4), the incident portion may be provided on a mounting member to be attached to the vehicle. In this case, the mounting member may be provided at the position of the incident portion of (11-1) to (11-3). In this case, the mounting member may be provided on the housing by gluing, fixtures or other means.

A drive recorder may be used as the "separate body" of (11-6) and (11-4).

As a "separate body" of (11-7) and (11-4), it is preferable to use a drive recorder mounting portion. This mounting portion is a portion for mounting the drive recorder at a predetermined mounting location of the vehicle. The mounting portion may include, for example, a portion physically connected to the drive recorder, for example, a portion that comes into surface contact with the mounting portion. The mounting member may be, for example, mounted on the windshield of a vehicle and may have an incident portion on the mounting surface side of the windshield.

(11-8) The configuration is not limited to the configuration in which the housing is provided with the function of performing notification control, and the housing may be provided with the function of a drive recorder.

(11-9) The incident portion may be detachably configured with respect to the housing. For example, the housing may be provided with a mounting portion for mounting the incident portion. The mounting portion may be provided with a fixing portion for fixing the incident portion.

(11-10) It is preferable to provide an adjusting means for adjusting the direction of the incident portion with respect to the housing. The adjustment means may have a structure similar to that of the camera orientation adjustment of a mirror type drive recorder. Further, the housing may be provided with a camera so that the orientations of the camera and the incident portion can be adjusted independently.

(11-11) In the electronic device 10, when the control unit 11 determines that the light from the speed measuring device 30 has been received, it is preferable that the image and the values of various sensors are recorded before and after the image. The control unit 11 may record information on whether or not the area where the vehicle is located is within a predetermined area such as the zone 30.

(11-12) In the electronic device 10, the control unit 11 records the setting information related to the notification (for example, an alarm) when the light from the speed measuring device 30 is received, together with the position information and the like. It is good to set it to.

(11-13) In a configuration in which the notification control is executed when the electronic device 10 receives a predetermined radio wave (for example, microwave), the incident portion is closer to the front side in the traveling direction of the vehicle than the microwave receiving portion 15. It is good to arrange it. Here, it is preferable that the incident portion is arranged on the front side so that the incident portion protrudes forward from the microwave receiving portion 15.

(11-14) In a configuration in which the electronic device 10 executes notification control when the position information acquired from the GPS receiving unit 16 satisfies a predetermined condition, the incident unit is more of a vehicle than the GPS receiving unit 16. It is preferable to arrange it on the front side in the traveling direction. Here, it is preferable that the incident portion is arranged on the front side so that the incident portion protrudes forward from the microwave receiving portion 15. Here, a predetermined condition means that the current position indicated by the position information acquired from the GPS receiving unit 16 and the position indicated by the position information stored in the storage unit 18 have a predetermined close relationship. You may do it.

(11-15) In a configuration in which the electronic device 10 includes a light emitting unit 23 and other light emitting units, the incident portion may be provided on a surface opposite to the surface on which the light emitting unit is provided. When the light emitting portion is provided on the front side of the housing 100, the light emitting portion may be provided on the back side.

(11-16) The portion where the light for obtaining the second light receiving amount corresponding to the second window 102 is incident (hereinafter referred to as “second incident portion”) is provided in the protruding portion where the incident portion is provided. It is good to be able to. In this case, the second incident portion may be provided in the protruding portion where the incident portion is provided in the same direction as the direction of the incident portion. The second incident portion may be provided in a protruding portion where the incident portion is provided in a direction different from the direction of the incident portion.

(11-17)
The second incident portion may be provided in a portion of the housing different from the protruding portion provided with the incident portion. The second incident portion may be provided in the protruding portion where the incident portion is provided in the same direction as the direction of the incident portion. The second incident portion may be provided in a protruding portion where the incident portion is provided in a direction different from the direction of the incident portion.

(11-18)
When the control unit 11 of the electronic device 10 determines that the pulsed light has been received in the case where it has a predetermined proximity relationship with at least one of the zone 30, the one-lane road, the school, the kindergarten or the nursery school, the speed measuring device 30 It is advisable to increase the possibility of being a false alarm source or decrease the possibility of being a false alarm source. The zone 30 is an area where speed regulation of 30 km / h is enforced for the purpose of suppressing the traveling speed and passing through of the vehicle in the area.

Some optical speed measuring devices are portable and some are fixed on the roadside or on the road, but those that can be carried are irregularly carried and installed somewhere in these places for measurement. It is necessary for the driver to be more careful because it is often done, but in this way, the notification can be performed more reliably in such a place. Also, even if the possibility of false alarms increases in such places, since these places are places where special attention should be paid to accidents, even if the possibility of false alarms increases, the driver is safe in these places. The inventors have found that they can raise awareness of.

(11-19) The control unit 11 of the electronic device 10 determines that it is at least one of a predetermined time zone such as midnight, a predetermined weather such as bad weather, and a predetermined road such as a plurality of lanes. If this is the case, it is preferable to increase the possibility that the speed measuring device 30 is used, or reduce the possibility that the speed measuring device 30 is a false alarm source.

The inventors have found that the portable type is often not measured because of the increased possibility of erroneous measurement in such a situation. By doing so, it is possible to reduce false alarms particularly in such a situation. In particular, in such a situation, the possibility that light such as a light from another vehicle is directly or diffusely reflected and indirectly incident on the light receiving portion increases, so that the possibility of false alarm increases. Therefore, such a problem can be reduced.

(11-20) The second light receiving element 124 may be used for detecting the state of light other than the light from the speed measuring device 30. The control unit 11 of the electronic device 10 may detect a state of light other than the light from the speed measuring device 30 based on the light received by the second light receiving element 124. The control unit 11 has, for example, a function of changing the brightness of the screen / light emitter (LED, etc.) according to the amount of ambient light, a function of switching the screen between daytime display and nighttime display, and a vehicle traveling in a tunnel. It is good to detect whether the wiper is moving or not. Whether or not the wiper is moving should be detected by detecting whether the wiper is Hi or Low based on the periodicity of blocking light.

In this way, when the electronic device 10 has a function of detecting the state of the light around the electronic device 10 and performing control based on the detection result, the state of the light around the electronic device 10 can be changed. Since it is not necessary to separately provide a sensor for detection, the cost can be reduced and the device (housing) can be easily miniaturized.

(11-21) Although it has already been explained that the light receiving portion should be provided outside the vehicle and the portion that realizes the function of performing the notification control should be provided inside the vehicle, it is further preferable to do as follows. The light receiving part. , The width range in the height direction of the wheels of the vehicle (particularly, the width range of the height of the license plate) may be provided at a position closer to the front of the vehicle. The light receiving part. It may be installed on a camera installed outside the vehicle interior to image the front or left front of the vehicle (here, a part on the left side may be included), or it may be configured so that it can be installed adjacent to the camera. good. Desirably, it is preferable that the image captured by the camera and the signal corresponding to the light received by the light receiving unit can be handled by a single cable. In this case, it is preferable that both signal lines are put in the same coating.

(11-22) The light receiving unit may be provided at a position in front of the driver's seat in the vehicle interior and including the same height as the height range of the member that transmits light from the outside of the vehicle interior to the vehicle interior in the vehicle. .. By doing so, it is possible to reduce the obstruction of light by the wiper on a sunny day, and more reliable detection can be performed.

The light receiving unit may have a means for installing the light receiving unit at a position that does not cover the initial position of the wiper as viewed from the vehicle interior. The light receiving unit may be installed on the lower side of the vehicle as much as possible. By doing so, it is less likely that the front view is obstructed during driving, the light from the speed measuring device 30 can be reduced, and the speed measuring device 30 can be detected more reliably. The position of the light receiving portion may be, for example, the position of the license plate. The light receiving portion may be arranged on the left side in the traveling direction of the vehicle. Since the light from the speed measuring device 30 is obliquely emitted toward the vehicle from the sidewalk direction on the left side, the possibility of being in the shadow of the preceding vehicle can be reduced. In particular, when the preceding vehicle is traveling a few meters in front of the own vehicle, the light emitted diagonally toward the vehicle from the sidewalk on the left side is blocked by the preceding vehicle and cannot be detected. In addition to reducing the possibility, it is possible to reduce the fluttering of the state such that the light from the speed measuring device 30 is detected or not detected when the distance between the own vehicle and the preceding vehicle fluctuates. ..

The control unit 11 of the electronic device 10 may notify that it becomes difficult to receive light from the speed measuring device 30 when the distance to the preceding vehicle is in a predetermined proximity state. The control unit 11 may change the content regarding the sensitivity of receiving light from the speed measuring device 30 depending on whether the distance to the preceding vehicle is in a predetermined proximity state or not. For example, it is preferable to increase the sensitivity when the distance to the preceding vehicle is in a predetermined proximity state as compared with when there is no such distance.

(11-23) It is assumed that the control unit 11 is the light from the notification object when it matches or resembles the pattern of the light transmitted from the speed measuring device 30. When it does not match or resembles this pattern, it may be determined that the light is not from the notification target object. The pattern of light emitted from the speed measuring device may be determined by the logic of the program. Information about the light pattern is stored in advance in the storage means (for example, storage example 1: parameters of the following (11-24) to (11-26), storage example 2: the following (11-24) to (11-). 26) Information on the degree of change in the amount of light over time), it is advisable to determine whether it resembles the stored pattern.

(11-24) When the control unit 11 of the electronic device 10 receives light that changes on or off at a predetermined time interval (for example, at intervals of several tens of microseconds), it determines that the speed measuring device 30 exists. good. The control unit 11 may not determine that the speed measuring device 30 exists when other light is received. In this case, the on-time may be on the order of nanoseconds and the off time may be on the order of several tens of microseconds.

The control unit 11 of the electronic device 10 is turned on for a predetermined on time (for example, a very short time), and is turned off for a predetermined off time longer than this (a time much longer than the very short time). When it is detected that the light is periodically repeated, it may be determined that the light is from the speed measuring device 30. The control unit 11 of the electronic device 10 may determine that the light other than this is not the light from the speed measuring device 30.

(11-25) The control unit 11 of the electronic device 10 periodically changes the amount of light at predetermined time intervals (for example, about several tens to several hundred ms) (for example, it is swept in the lateral direction (left and right)). When the light is received, it may be determined that the speed measuring device 30 exists. The control unit 11 may not determine that the speed measuring device 30 exists when other light is received.

In the configurations (11-26) (11-24) to (11-25), the control unit 11 may determine that the speed measuring device 30 exists based on the light received at a plurality of timings. For example, when the control unit 11 determines that the speed measuring device 30 exists based on the light received at a plurality of predetermined timings, the speed measuring device 30 finally exists.

(11-27) The antenna unit and the display unit are provided as separate housings, the antenna unit is electrically connected to the display unit, and the display unit performs predetermined notification control (for example, based on the signal received by the antenna unit). An electronic device (for example, an alarm device) for a vehicle that performs an alarm), the light receiving portion is provided in a housing of an antenna portion or a housing different from the housing of the antenna portion and the housing of the display portion to display. The unit may have a function of giving a notification (for example, an alarm) regarding speed measurement of an optical vehicle based on a signal relating to a light receiving state of the light receiving unit from a housing provided with the light receiving unit. The antenna unit is one or both of the antenna of the GPS receiving unit and the antenna of the microwave receiving unit. The antenna unit may be connected to the monitor unit by wire or wirelessly. The light receiving unit may have the same configuration as the light receiving unit 12, and is a light receiving unit for receiving light from the speed measuring device 30.

(11-28) In the housing of the antenna portion including the light receiving portion of (11-27) or the other housing including the light receiving portion, a light emitting body (for example, an LED or the like) is blinked while the vehicle is stopped. (Example: Dummy) It is advisable to provide a security function. The light emitting body may be provided on the upper surface of the housing, and the light receiving portion may be provided on the back side.

The "electrical connection" of (11-29) and (11-27) is made by wire, and includes a relay unit having a further housing between the antenna unit and the display unit, and the relay unit receives light. It is preferable to provide a function of supplying power to the electronic circuit of the housing having the unit and relaying the signal of the electronic circuit of the housing having the light receiving unit to the display unit.

(11-30) Under the configuration including the antenna of the GPS receiving unit (that is, "GPS antenna"), the antenna of the microwave receiving unit, and the light receiving unit, the GPS antenna is arranged at the uppermost position among them. It is good to set it to.

(11-31) Under the configuration including the GPS antenna, the antenna of the microwave receiving unit, and the light receiving unit, the antenna of the microwave receiving unit, the light receiving unit, and the GPS antenna are arranged at positions on the front side in the traveling direction. It is good to do so.

(11-32) Under the configuration in which the antenna of the microwave receiving unit and the light receiving unit are provided, it is preferable that both are arranged side by side in the left-right direction. In this case, it is preferable not to overlap in the vertical direction.

(11-33) Under the configuration including the antenna of the microwave receiving unit and the light receiving unit, the light receiving unit may be arranged at a position above the antenna of the microwave receiving unit.

(11-34) It has a function of connecting the electronic circuit of the housing having the light receiving part to the drive recorder, and the drive recorder receives an image when the light from the speed measuring device 30 is received by the light receiving part. It is advisable to provide a recording function. The display unit may be provided with a function of reproducing the recorded image when the light from the speed measuring device 30 is received. This video is, for example, a video of a recorded video for a predetermined period of time.

(11-35) The electronic device may have a configuration in which light is received by using a light guide tube such as an optical fiber or other light guide member. For example, the GPS antenna, the antenna of the microwave receiving unit, and the light receiving unit may not be arranged at ideal positions.

(11-36) FIG. 70 (a) is a diagram showing an example of such a configuration. In this example, in the housing 1051, the antenna 1053 of the microwave receiving unit is arranged on the substrate 1052 on the front side in the traveling direction of the vehicle, and the light receiving unit 12 is arranged on the rear side of the antenna 1053. The GPS antenna 1054 is arranged at a position where it overlaps the light receiving unit 12 in the vertical direction. The light guide member 1055 is arranged on one side of the antenna 1053 with respect to the traveling direction of the vehicle. The light incident on the end surface of the light guide member 1055 on the front side of the vehicle is guided to the end surface on the opposite side. The light receiving portion 12 faces the opposite end surface. The light receiving unit 12 receives the light emitted from the opposite end face. note that. The light guide member 1055 may be arranged so that light from the front side in the traveling direction of the vehicle can enter, and the arrangement of each member is not limited to the example described in FIG. 70 (a). Further, FIG. 70 (b) is a view of this electronic device from above. As shown in FIG. 70 (b), if the light guide member 1055 is rotatably arranged around the rear shaft 1056, the mounting problem is improved.

In the above description, in consideration of the light reception from the speed measuring device located on the left side, the light reflected from the median strip or the like may arrive at the place where each member is arranged on the left side. Since there is also a property, it may be read as a configuration arranged on the right side.

(11-36) The light receiving sensitivity of the member functioning as the visible light cut filter exemplified by the lid portions 1003 and 803 changes depending on the difference in the surface state of the member. For example, the surface of the member may be a textured surface (a surface having a relatively rough surface), but may be a smoother surface (glossy and less rough) (for example, a polished surface). Improvement of sensitivity can be expected. In the case of a textured surface, light is diffused on the surface. In anticipation of that effect, it is considered that sensitivity can be easily obtained even if the light receiving direction is laterally deviated. On the other hand, the inventor thought that if the surface was polished, the light would not diffuse when passing through the member functioning as the visible light cut filter, and the amount of light reaching the light receiving portion would increase, so that the sensitivity would increase. FIG. 71 is a diagram showing the difference between the presence and absence of grain processing.

In the case of grain processing, for example, it is preferable to have a configuration in which the design is not impaired. For example, it may be desirable that the inside of the housing cannot be seen from the outside. If a pattern such as embossing is applied around the member that functions as the visible light cut filter, the member portion that functions as the visible light cut filter may have the same pattern. About the color of this part, the color seen from the outside. It is preferable that the color is similar to that of the housing and the light to be detected is transmitted.

(11-37) The control unit 11 of the electronic device 10 performs alarm control when an image corresponding to the light from the speed measuring device 30 is detected in the imaging region by using a camera capable of capturing an infrared region. It is good to do so. The image corresponding to this light may be blinking light (for example, in an area having a small number of pixels (a range corresponding to a point)). The control unit 11 of the electronic device 10 may determine that the position of the image corresponding to this light in the captured image is the position corresponding to the installation position of the speed measuring device. The control unit 11 of the electronic device 10 may identify an area directly above the road and the side of the driving lane (roadside band position) by image recognition, and determine whether or not there is blinking light at that position. ..

(11-38) It may be a separate body so that it passes through the lens after the visible light cut filter, but if the lens itself is made of a material that cuts visible light and a separate visible light cut filter is not provided on the surface side of the housing. good.

(11-39) It is preferable to provide an adjusting means capable of adjusting the direction of the portion where the incident portion is provided (the above-mentioned protruding portion). The adjusting means can change the direction of the part where the incident part is provided when the force of the human hand is applied, and the direction of the part where the incident part is provided is not changed when the force of the human hand is not applied. good. It is preferable that the adjusting means can be changed up, down, left and right, but at least the orientation can be adjusted in the left and right direction. In particular, the display unit is provided on the front surface of the housing, and the adjusting means and the incident portion are provided on the back surface side of the housing, which produces an excellent effect. In particular, when it is installed on the right side of the front of the driver's seat on the dashboard, the left side should be facing forward so that the display screen of the display unit can be easily seen. Then, the light receiving portion faces the front on the right side, and it becomes difficult to receive the light from the speed measuring device 30 which is often transmitted from the front on the left side such as the roadside band. It can be directed in the direction of the light from the speed measuring device 30 which is often sent from the left front such as the roadside band.

(11-40) Based on the instruction from the user or the reception of light from the speed measuring device 30, information about the point where the monitoring activity by the speed measuring device 30 was performed is transmitted to the server or another vehicle. It is good to have a function. At this time, in addition to the information about the point (for example, the current position information by GPS), it is preferable to have a function to transmit the monitoring type information that the monitoring activity by the light from the speed measuring device 30 is performed. ..

In addition, it is preferable to have a function of transmitting information that can distinguish between posting from the user at the point where the monitoring activity by the speed measuring device 30 was performed and automatic posting by receiving light from the speed measuring device 30. Further, it has a function of receiving information about the point where the monitoring activity by the speed measuring device 30 posted on the server was performed, and when the own vehicle approaches the received position, the posted speed measuring device 30 monitors. It is advisable to have a function to notify that the activity was being carried out. At this time, the speed from the user is received by receiving both information that can distinguish between the posting from the user at the point where the monitoring activity by the speed measuring device 30 was performed and the automatic posting by receiving the light from the speed measuring device 30. It is preferable to distinguish between posting at the point where the monitoring activity by the measuring device 30 was performed and automatic posting by receiving light from the speed measuring device 30. It is advisable to "approach the vehicle to the received position" by assuming that the vehicle has approached a distance longer than the detectable distance of the laser beam. For example, if the detectable distance of a normal laser beam is 500 m, the determination of the approach of the own vehicle to the received position may be 800 m.

For example, after passing through the posted point where the monitoring activity by the speed measuring device 30 was performed, a notification is given to inquire to the user whether or not the monitoring activity by the speed measuring device 30 has been performed, and the user's voice for this is given. A function that detects manual operations and sends information to the server whether or not the speed measuring device 30 was monitoring the point where the posted laser speed measuring device was monitoring. You should prepare. This information is acquired from the server, and for those approaching the point, information on whether or not the monitoring activity by the speed measuring device 30 has been performed is added and notified, or the notification itself is not performed. It is good to have a function to do.

In addition, instead of transmitting to a server (for example, transmitting to a server connected to the Internet via a wireless LAN and an LTE wireless LAN router), or at the same time, broadcasting to the surroundings by radio waves, or other surroundings The above-mentioned information may be communicated with the radar detector of the above. Such information may be transmitted by relaying between radar detectors between vehicles by P2P or the like.

Regarding (11-41) and (11-40), the idea of automatically posting and sharing the data of the light receiving location from the speed measuring device 30 or the receiving location of the radar radio wave is accurate reception without misrecognition. It is considered that this function cannot be demonstrated unless there are many users who use the registration and network. Therefore, if a system for posting on SNS (Social Network System) is adopted and can be seen by many users, as a result, it can be linked to the appeal of the electronic device 10 or its provider (company), which can lead to purchasing power. Based on the idea that it may be, it may be configured as follows. The SNS is, for example, Twitter®, Instagram®) or other SNS.

When the control unit 11 of the electronic device 10 starts receiving the pulsed light corresponding to the optical system or the radio wave corresponding to the radar system, the control unit 11 acquires an image captured by the vehicle-mounted camera (for example, the vehicle-mounted camera 50) and acquires the captured image. The image recognition process of the image is started. This image recognition process is a process of recognizing an image of the speed measuring device included in the captured image. The algorithm for the image recognition process may be performed using a known image recognition process. For example, image data showing an image of each speed control device of the optical system and the radar system is stored in the storage unit 18 in advance. The control unit 11 uses this image data to perform image recognition processing, for example, by a pattern patching method. Here, the control unit 11 may narrow down the image data used for the image recognition process according to the form of receiving the pulsed light or the form of receiving the radio wave. For example, when the pulsed light is received, the control unit 11 narrows down to the image data of the optical speed measuring device stored in the storage unit 18, and when the radio wave is received, the control unit 11 stores it in the storage unit 18. It is advisable to narrow down to the image data of the radar type speed measuring device. The control unit 11 compares the image captured by the vehicle-mounted camera 50 with the image indicated by the narrowed-down image data, and determines whether or not the speed measuring device has been imaged based on a value indicating the degree of similarity (here, a score value). to decide. As for the score value indicating the degree of similarity, for example, the higher the degree of similarity, the larger the value. The score value is calculated by a known algorithm. For example, when the score value is equal to or higher than the threshold value, the control unit 11 determines that the speed measuring device exists and performs the posting process. For example, when the score value is less than the threshold value, the control unit 11 determines that the speed measuring device does not exist, and does not perform the posting process. If the vehicle is not equipped with a camera for image recognition such as an in-vehicle camera 50, the control unit 11 will perform related public control information or control PoI when reception of pulsed light or reception of radio waves is started. Determine if there is a (Point of Interest, that is, a control point). If it is determined that any of these is present, the control unit 11 performs the posting process, and if it is determined that there is none, the control unit 11 does not perform the posting process.

The control unit 11 performs a posting process of posting information such as position information indicating the position of the speed measuring device to the server via the communication unit 17. The control unit 11 has, for example, latitude / longitude as position information indicating the position of the speed measuring device, date and time, type of electronic device 10 (for example, manufacturer name, model or model number), running road name, and current position. Data in a predetermined format such as CSV (Comma-Separated Values) including an address, a comment for SNS, etc. is generated and uploaded to a server. The comment for SNS is a summary of, for example, the date and time, the type of electronic device 10, the name of the road on which the vehicle is traveling, the address of the current position, and the like. In order to make it easier to handle the data sent from the electronic device 10, the server may sort the data in chronological order, for example, and store the data. The server automatically posts to SNS. The server should devise the number of people who agree with the posted content (the number of so-called "likes") in order to acquire the number of followers. For captions and comments, use comments for SNS.

The control unit 11 of the electronic device 10 periodically monitors the server, downloads the posted data if the latest data is updated, and displays and outputs it on a map or by telop. It should be noted that this display can be turned on / off, and only the latest information may be displayed only for those who want to see the information. Here, for example, "Icon in Wakkanai City, Hokkaido, but icon + telop National Highway No. 238, portable Orbis is being cracked down!" Is output by display.

Regarding the configurations of (11-42) and (11-41), after receiving the pulsed light, the control unit 11 determines the speed when the light receiving is interrupted and the vehicle in front is recognized from the image of the vehicle-mounted camera 50. It is preferable to continuously control the presence of the measuring device 30. In this way, the presence of the speed measuring device 30 can be notified even when the pulsed light from the speed measuring device 30 is blocked by the vehicle in front.

Regarding the configurations of (11-43) and (11-41), the control unit 11 passes through the position of the speed measuring device when the intensity of receiving pulsed light is suddenly stopped from being detected at a predetermined level or higher (for example, passing through the position of the speed measuring device). It is advisable to upload the captured image (for example, a photograph) captured immediately before the detection disappears (for example, immediately before passing through the position of the speed measuring device) to the server together with the position information. In this way, the server side can judge whether it is a false alarm or a true alarm by looking at the image. It is even better to upload the captured image of the rear camera to the server after the detection disappears (for example, after passing). The control unit 11 may have another vehicle device (electronic device 10 or an in-vehicle camera) take an image of the position of the speed measuring device and automatically upload the image. At this time, the electronic device 10 may distribute the position information of the speed measuring device to a model having no function of receiving pulsed light, photograph the device, and upload the image. Image information such as the time to stop crackdown can be collected from many existing electronic devices. At this time, if the model has a function of receiving pulsed light, it is advisable to upload the laser reception level as well.

(11-44) The control unit 11 puts the logo or characters of the manufacturer of the electronic device 10 in the image of (11-43) or in the description thereof, and "I was saved by the radar of XX" (XX). 〇 may be posted on the manufacturer's name) and SNS. The type of electronic device 10 (for example, model number) may also be included here. The control unit 11 may also include the vehicle speed at that time (for example, only when the speed is below the speed limit). The control unit 11 may also include the speed limit of the road. The control unit 11 may also include facility information in the vicinity thereof. The control unit 11 posts, for example, "Passing a laser orbis near △△ with a speed limit of 60 km at a speed of 55 km / h. It was saved because there was a radar of 〇〇." The image may be the screenshot itself of the screen of the electronic device 10. In particular, it is preferable to use the display screen itself in which the image captured by the drive recorder and the image related to the notification of the electronic device 10 are superimposed. At this time, an image imitating the part where the frame part (model name or function name) on the outside of the radar screen is written on the outside of the display screen (that is, the housing part when the electronic device 10 is viewed from the front is displayed. Image of the part of the area).

(11-45) The electronic device 10 may upload and share the point where the notification by the cancel function corresponding to the radar method is canceled to the server via the network. In this way, it is possible to prevent false alarms from being performed from the beginning even for automatic doors and the like near the road on which another user travels for the first time.

(11-46) Radar detectors may react to vending machines. Therefore, when an electronic device receives a predetermined radio wave (radar wave) while parking, it displays a message "Is there a vending machine nearby?" And buttons "Yes" and "No" to accept posts. .. The electronic device sends the posted data to the server. The server should aggregate the posted data and distribute it as a false alarm source as vending machine points.

(11-47) By connecting the electronic device 10 to a drive recorder compatible with mutual communication, it is possible to supply power to the drive recorder and communicate video / audio signals, operation signals, GPS information and OBDII information. Furthermore, it is equipped with an interlocking mode that automatically switches to the external input display when approaching the speed measuring device. When approaching the speed measuring device, the position of the camera of the speed measuring device (for example, fixed in 3 patterns of top / left / right) is highlighted in red to notify the user. The speed warning point warning warns the point where the maximum speed is switched, which is likely to be cracked down. In addition, it is equipped with a normal image / mirror image switching function, and the drive recorder can also be used as a back camera.

[12. Other embodiments]
Regarding the configuration in which the above-mentioned lens or mirror is combined to widen the light receiving angle of the light receiving element, for example, the following configuration. FIG. 72 is a diagram showing a configuration in which the electronic device 10A of the present embodiment is viewed from diagonally upward right on the back side. FIG. 73 is a six-view view showing an example of the external configuration of the electronic device 10A of the present embodiment. FIG. 73 shows a front view, a top view, a right side view, a bottom view, a left side view, and a rear view of the electronic device 10A. Below, [7. For the same elements as those described in [Mechanism of Electronic Device 10], see [7. The same code as that used in [Mechanism of electronic device 10] is used, and the description thereof will be omitted as appropriate.

The housing 100A of the electronic device 10A is divided into a first housing 1001 located on the front side and a second housing 1002A located on the rear side. An illuminance sensor 201 of a display unit 13, a light emitting unit 23, and a sensor unit 20 is provided on the front surface of the first housing 1001. The display area of the display unit 13 is located in the opening on the front surface of the first housing 1001. The speaker 14 is provided so as to output sound from the upper end surface of the second housing 1002A. A mounting portion 21 (that is, an SD card slot) for mounting an SD card is provided on the right end surface of the housing 100A. A condenser lens 300 is provided on the upper right portion of the back surface of the housing 100A. A power switch 221 and a DC jack 222 of the power supply unit 22 are provided in the lower left portion of the back surface of the housing 100A.

A lens holder 1006 is provided on the back surface of the second housing 1002A. The lens holder 1006 constitutes a window which is an opening through which the inside and outside of the housing 100A are passed. The lens holder 1006 has an elliptical shape having a long axis in the horizontal direction and a short axis in the vertical direction when viewed from the back side of the housing 100A. When the electronic device 10A is installed in the vehicle, the horizontal direction corresponds to the width direction of the vehicle, and the vertical direction corresponds to the height direction of the vehicle.

The condenser lens 300 is fitted in the lens holder 1006. The condenser lens 300 is a part of the light receiving portion 400, and is provided at a position corresponding to the incident portion of the light described in the above-described embodiment. The lens holder 1006 and the condenser lens 300 are provided at positions closer to the upper right of the second housing 1002A when viewed from the back surface of the second housing 1002A. For example, the condenser lens 300 is arranged so as to be located on the back surface of the housing 100A at least above the center in the vertical direction and at least on the left side with respect to the traveling direction of the vehicle when viewed from the driver's seat side of the own vehicle. Will be done. When the condenser lens 300 is located relatively above the back surface of the second housing 1002A and is located on the shoulder side where the speed measuring device 30 is likely to be located, the light from the speed measuring device 30 is received. This is because it may be easier. The pulsed light Lout from the speed measuring device 30 is introduced into the housing 100A via the lens holder 1006 and the condenser lens 300. The condenser lens 300 is formed by using a material that transmits light as a whole. The condenser lens 300 is transparent or translucent. The light incident surface of the condenser lens 300 is aspherical, and projects further toward the back side of the back surface of the housing 100A. The condenser lens 300 is an aspherical lens, and its configuration will be described in detail later. The condenser lens 300 is a lens that transmits at least pulsed light Lout, and is a translucent or transparent member. This may contribute to the exertion of the design appeal of the electronic device 10A.

FIG. 74 is a diagram showing a state in which the second housing 1002A is removed from the electronic device 10A. FIG. 75 is a diagram showing a state in which the condenser lens 300 is further removed from the electronic device 10A. FIG. 76 is a diagram showing a state in which the filter 250 and the shield plate 270 are further removed from the electronic device 10A.

The condenser lens 300 is provided at a position overlapping the first region Ar3 of the second substrate 1030. The condenser lens 300 is designed and manufactured so as to focus the pulsed light Lout at a predetermined focal length position. The light receiving element 410 receives the light collected by the condenser lens 300. The light receiving element 410 is provided on the side of the second substrate 1030 that faces one surface on the condenser lens 300 side, that is, on the side where the first substrate 1010 is arranged in the present embodiment. Therefore, the light receiving element 410 receives the light that has passed through the light transmitting portion 1033 provided on the second substrate 1030. The translucent portion 1033 is a rectangular parallelepiped opening here. The light receiving element 410 may be the same element as the first light receiving element 122 or the second light receiving element 124, but is different from the above-described embodiment in that the light receiving element is one.

The filter 250 is an example of a wavelength selection unit corresponding to the first wavelength selection unit 121. The filter 250 is provided between the light receiving element 410 and the condensing lens 300, and selects and transmits light having a specific wavelength λout from the incident light. The filter 250 may be removed in any configuration. The shield plate 270 is, for example, a shield made of aluminum or a conductive material, and is provided in a region surrounding three of the four sides of the translucent portion 1011. The shield plate 270 is for suppressing the influence of static electricity and the like on the light receiving element 410 and other electronic components.

FIG. 77 is a diagram in which the second substrate 1030 is erased in FIG. 76. The light receiving element 410 is housed in the shield case 280. The shield case 280 is provided on the surface side of the substrate 1010 facing one surface on the condenser lens 300 side, and covers the entire light receiving element 410. Such a shield case 280 performs the same function as the shield case 1031.

In this way, the light receiving element 410 is arranged on the front surface of the electronic device 10A of the second substrate 1030. By doing so, the shield can be more reliably performed by a simple method, and since the substrate 1010 exists between the light receiving element 410 and the condenser lens 300, the space corresponding to the focal length can be effectively used. As a result, the housing 100 as a whole also contributes to the realization of compactness. The same effect can be expected by arranging the light receiving element 410 on the front surface or the rear surface of the electronic device 10A in the first substrate 1010.

FIG. 78 is a six-view view showing an example of the configuration of the condenser lens 300. The condensing lens 300 is an aspherical lens that collects the reflected light from the speed measuring device 30 and forms an image at a predetermined condensing position. The condenser lens 300 is an aspherical lens in which the incident surface of light is aspherical. The condenser lens 300 includes an incident surface 310 and an exit surface 320. The incident surface 310 includes an aspherical curved surface 311 on which pulsed light from the velocity measuring device 30 is incident. The incident surface 310 includes a curved surface 311 that is convex along the width direction of the vehicle. The curved surface 311 protrudes most in the center in the width direction of the vehicle. Further, the curved surface 311 becomes convex along the height direction of the vehicle. The curved surface 311 protrudes most in the center in the height direction of the vehicle. The curved surface 311 has, for example, a parabolic shape, but may have any other shape as long as it is a surface having a smooth curve.

On the curved surface 311 the length La in the width direction of the vehicle is larger than the length Lb in the height direction. The curvature of the curve in the width direction of the vehicle of the condenser lens 300 is smaller than the curvature of the curve in the height direction of the vehicle. As described above, the condenser lens 300 bends more gently in the width direction of the vehicle than in the height direction of the vehicle.

The exit surface 312 is a surface on which light incident on the incident surface 310 (particularly the curved surface 311) is emitted. The exit surface 312 is a flat surface. However, the exit surface 312 may be curved.

The condenser lens 300 guides the pulsed light from the speed measuring device 30 to the position of the light receiving element 410. The arrangement position is set so that the light is condensed at the position of the light receiving element 410 according to the characteristics of the condenser lens 300.

A flat surface 313 is provided around the curved surface 311 of the incident surface 310. Legs 314A and 314B are provided on a pair of side portions of the flat surface 313 facing each other. The legs 314A and 314B are fixed to the substrate 1010. The flat surface 313 and the legs 314A and 314B are not essential configurations.

Since the condenser lens 300 having the above configuration is an aspherical lens, spherical aberration can be suppressed when an image is formed by the light receiving element 410 as compared with the case where a spherical lens is used. The spot size obtained with an aspherical lens may be several orders of magnitude smaller than that of a spherical lens. Based on this idea, it is considered that the condenser lens may be realized by a combination of a plurality of lenses having a smaller spherical aberration than a spherical lens.

When the speed measuring device 30 is present on the shoulder of the road, when the distance between the speed measuring device 30 and the vehicle is large, the pulsed light Lout is incident from substantially the front side, but as it approaches, the pulsed light Lout is incident from the left direction. Therefore, the condenser lens 300 has a longer La length in the horizontal direction than Lb so that light can be received at a wider reception angle in the width direction of the vehicle than in the height direction of the vehicle. For example, the condenser lens 300 can collect light incident at an incident angle of 40 degrees on both sides in the width direction and 20 degrees on both sides in the height direction. By making the length Lb of the curved surface 311 in the height direction relatively short, the focusing of light other than the pulsed light Lout is reduced. The curved surface 311 may be flat along the height direction of the vehicle if it is intended to receive a wide range of incident angles in the width direction of the vehicle.

It is preferable that the light receiving element 410 is not arranged at the focal length position of the condenser lens 300, but is arranged at a position shorter than the focal length. Since the curvature of the condenser lens 300 is small and the light is greatly bent, the light around the condenser lens 300 tends to collect in the vicinity of the center of the optical axis before the focal length. By arranging the light receiving element 410 before the focal length, more light can be collected. Light coming from a steep angle also passes near the center of the optical axis before the focal length position. By placing the light receiving element 410 in front of the light receiving element 410, it is possible to receive light having a wide incident angle.

The condenser lens 300 has a characteristic that even if the pulsed light from the speed measuring device 30 is weak, it can be detected. As a result, the electronic device 10 can detect the presence of the speed measuring device 30 in an ultra-wide range and a long distance, and can promptly notify the existence of the speed measuring device 30. Similar to the above-described embodiment, a visible light cut filter may be provided on the incident surface side of the condenser lens 300, or the condenser lens 300 may be made of a material having a visible light cut function. This reduces the effect of visible light. The condenser lens 300 may be called an aspherical lens (espheric lens).

The condenser lens 300 may be arranged so that its optical axis is parallel to the front-rear direction of the vehicle, but may be tilted. In this case, if the optical axis of the condenser lens 300 is tilted to the left front side with respect to the front-rear direction of the vehicle, it may be easier to receive the pulsed light Lout from the speed measuring device 30.

The inventors conducted an experiment to confirm that an aspherical lens can receive light with a wide angle of incidence. As shown in FIG. 79 (a), a commercially available transparent acrylic semi-round bar (radius 6.35 mm) was scraped off to a thickness of 3 mm and polished. A photodiode (PD) was used as the light receiving element. The focal length is 3 mm in back focus, and the lens is placed 1 mm above the light receiving element in order to widen the angle of view on the upper side. FIG. 79 (b) is a table showing the relationship between the light source direction [deg] and the ATT value [db] in this case. As a result, it was confirmed that the receiving angle in the horizontal direction, which is curved, is larger than the receiving angle in the vertical direction.

FIG. 80 is a diagram showing an example of the electrical configuration of the light receiving unit 400. The light receiving element 410 is a photodiode here. The cathode of the light receiving element 410 is connected to the power supply line on the high potential side, and the anode of the light receiving element 410 is connected to one end of the resistor R3. The other end of the resistor R3 is grounded. The input end of the amplifier AMP1 is commonly connected to the anode of the light receiving element 410 and one end of the resistor R3. A plurality of amplifiers AMP2, ... AMPN are connected in series after the amplifier AMP1. The value of N is arbitrary. However, it is desirable that the amplifiers AMP1 to AMPN are designed to amplify the signal in the wavelength region of the pulse wavelength λout. The output end of the AMPN is connected to one input terminal of the differential amplifier 430 (here, the input terminal on the positive electrode side), and the signal SIGN is input. The threshold level Thn is input to the other input terminal of the differential amplifier 430 (here, the input terminal on the negative electrode side). The differential amplifier 430 functions as a comparator that outputs a signal corresponding to the difference between the signal SIGN and the threshold level Thn. The differential amplifier 430 outputs a signal with a positive potential when the signal SIGN exceeds the threshold level Thn, and outputs a signal with a negative potential when the signal SIGN is below the threshold level Thn. The control unit 11 detects the presence of the speed measuring device 30 based on the difference between the signal SIGN and the threshold level Thn.

The control unit 11 may detect the presence of the speed measuring device 30 in the same manner as described above. For example, when the wavelength of the pulsed light is 905 nm, the control unit 11 may include pulses with a pulse interval of 80 ms (or a range of less than 80 ms or / or more than 80 ms, which is within a certain range from the reference pulse interval). When light is received, it is preferable to perform control to notify the presence of the speed measuring device 30. Alternatively, when the control unit 11 receives pulse light having a pulse width (emission time) of 20 ms (or / and may include a range of less than 20 ms or more than 20 ms, which is within a certain range from the reference pulse width). In addition, it is preferable to perform control to notify the presence of the speed measuring device 30. The control unit 11 may notify the presence of the speed measuring device 30 when the pulsed light of the light having the specific wavelength λout is received at least once. In this way, when there is a possibility that the speed measuring device 30 exists, the existence of the speed measuring device 30 can be promptly notified and the user can grasp the existence of the speed measuring device 30.

[13. [12. Modifications of [Other Embodiments]]
(13-1) As shown in FIG. 81, the electronic device 10A may have a reflecting unit 500. The reflecting unit 500 is provided at a position different from that on the optical path from the condenser lens 300 to the light receiving element 410. The reflecting unit 500 includes a reflecting surface that reflects at least a part of the light emitted from the condenser lens 300 in the direction of the light receiving element 410. The reflecting portion 500 has a portion that surrounds the optical path, and is preferably formed in a tubular shape that surrounds the optical path over the entire circumference so as to increase the reflected light coefficient. The diameter of the reflecting portion 500 becomes smaller as it approaches the light receiving element 410. By doing so, the amount of light received from the speed measuring device 30 by the light receiving element 410 increases, so that the presence of the speed measuring device 30 can be notified more reliably.

For example, the reflecting portion 500 may be arranged by bending the mirror-finished reflecting sheet vertically on the substrate surface side in a semi-cylindrical shape with the light receiving element 410 side inside. For example, the area between the incident portion and the light receiving element 410 may be a cylinder, and the inside of the cylinder may be a mirror surface (or a scattering surface).

(13-2) As shown in FIG. 82, the electronic device 10A may have a reflecting unit 600. The reflecting unit 600 is provided on the optical path from the condenser lens 300 to the light receiving element 410. The reflecting unit 600 reflects at least a part of the light emitted from the emitting surface 320 in the direction of the light receiving element 410 by utilizing the total reflection of the light. The reflecting unit 600 is, for example, a medium in the shape of a pillar, a square pillar, a cone, or a pyramid provided between the condensing lens 300 and the light receiving element 410, and reflects light such as an infrared transmissive resin, glass, or an optical fiber. It is preferable that the member has a function. The reflecting unit 600 may be made of a material that transmits light of a specific wavelength. The reflection unit 600 may be realized by utilizing total reflection of the critical angle or more. For total reflection due to the critical angle, the shape of the side portion of the reflection portion 500 may be flat, but it should be a non-flat shape such as jagged. It is also conceivable to direct the light outward from the condenser lens 300 inward. By doing so, the amount of light received from the speed measuring device 30 by the light receiving element 410 increases, so that the presence of the speed measuring device 30 can be notified more reliably.

(13-3) The vertical center position of the condenser lens 300 may be shifted upward from the light receiving element 410. This is to ensure that the screen of the main body is properly incident on the light receiving element 410 even when the screen is tilted so as to be in the back so that the screen of the main body can be easily seen.

(13-4) As shown in FIG. 83, a collision warning system 700 that emits light toward the windshield 42 of the vehicle may be provided. The collision warning system 700 is arranged, for example, on or around the windshield 42. The collision warning system 700 emits light L1 having a predetermined wavelength toward the front of the vehicle and receives the reflected light to prevent the presence of an object in front (for example, a building such as another vehicle or a wall). , Detects the distance to the object and notifies the user. When the collision warning system 700 is operating, the electronic device 10A may receive the disturbance light L2 including the reflected wave from the object in front or the windshield. In this case, depending on the wavelength of the disturbance light L2, the light of the collision warning system 700 may be mistaken for the pulsed light Lout.

FIG. 84 is a graph showing an example of a temporal change in the level of light received by the light receiving unit 400. FIG. 84 shows a case where the vehicle is approaching the speed measuring device 30 and the level of the pulsed light Lout is gradually increasing. The level of the disturbance light L2 indicates the level of light caused by the collision warning system 700. In this example, when the threshold level Thn is set to Th1, the level of the disturbance light L2 is lower than the threshold level Th1 and exceeds the pulsed light Lout, so that there is no problem in detecting the pulsed light Lout. However, when the threshold level Th2 is set, the level of the ambient light L2 and the pulsed light Lout level both exceed the threshold level Th2. In this case, even if an attempt is made to detect the speed measuring device 30 based on the pulse interval, this cannot be detected. The threshold level Thn may be optimally set, but it may be difficult to set because the light level of the collision warning system 700 differs depending on the vehicle type and model. Therefore, the control unit 11 controls to notify the presence of the speed measuring device 30 when the level of the received light having a specific wavelength is equal to or higher than the threshold level, and also controls to change the threshold level.

FIG. 85 is a diagram showing an example of the electrical configuration of the light receiving unit 400. In this example, the circuit configuration between the control unit 11 and the differential amplifier 430 is different from the configuration shown in FIG. 80. One end of each of the resistors R41, R42, and R43 is connected to each of the three terminals of the control unit 11. The other ends of the resistors R41, R42, and R43 are connected to the power supply line Vcc to which a fixed voltage is applied via the resistors R44. The control unit 11 selectively outputs a 1-bit signal indicating either "0" (low level) or "1" (high level) from the three terminals to which the resistors R41, R42, and R43 are connected. do. The threshold level Thi changes according to this signal level. Here, since the threshold level Thi is adjusted by the 3-bit signal, there are eight levels that the threshold level Thi can take. The level of the threshold level Thi changes according to this signal level. Here, in the case of "000", it becomes the minimum, and the threshold level is Th1 in the order of "001", "010", ..., "111". It increases in the order of Th2, ..., Th8.

During a predetermined period such as while the vehicle is running or the engine is on, the control unit 11 increases the threshold level in order from Th1. Here, in the example of FIG. 86, since the control unit 11 repeatedly receives the disturbance light L2 at a high cycle, it is determined that the disturbance light exists. In this case, the control unit 11 raises the threshold level to Th2. Here, since the control unit 11 repeatedly receives the ambient light L2 at a high cycle, the threshold level Th2 is not optimized. In this case, the control unit 11 raises the threshold level to Th3 by determining that the ambient light is present. Then, the control unit 11 determines whether or not the disturbance light L2 is repeatedly received at a high cycle. In this case, since the control unit 11 does not repeatedly receive the ambient light L2 at a high cycle, the threshold level is optimized. Even if the threshold level is raised to Th3, if the ambient light L2 is repeatedly received at a high cycle, the control unit 11 raises the threshold level to Th4. Subsequent controls are the same.

When the threshold level is set, the control unit 11 makes this adjustment at a predetermined timing. This timing is, for example, the timing at fixed intervals. At the adjustment timing, the control unit 11 lowers the set threshold level Thi by one step to become Thi-1. Then, when the control unit 11 repeatedly receives the ambient light L2 at a high cycle, the threshold level Thi-1 is raised by one step and reset to the threshold level Thi. When the ambient light L2 is not repeatedly received in a high cycle, the control unit 11 is further lowered by one step to become Thi-2. When the control unit 11 repeatedly receives the ambient light L2 at a high cycle, the threshold level Thi-2 is raised by one step and returned to Thi-1 to be set to this threshold level. If the disturbance light L2 is not repeatedly received in a high cycle, the control unit 11 further lowers the threshold level to Th-3. Subsequent control is the same. In this way, the threshold level can always be optimized. Since there is noise in the circuit due to input noise of the amplifier or the like, it is preferable that the resistors R41 to R44 are set to such an extent that the threshold level Th1 exceeds the level of this noise NS. Further, the threshold levels Th1 to Th8 do not have to be at equal intervals, and the higher the threshold level, the larger the interval, the smaller the interval near the lower limit and the upper limit, and the larger the interval near the middle. Further, the number of steps (number of resistances) of the threshold level is not limited to this, and may be less than 8 steps or more than 8 steps. Further, the configuration for making the threshold level Thi variable may be any other configuration.

FIG. 87 is a diagram showing an example of a modification of the electrical configuration of the light receiving unit 400. As described above, when the control unit 11 changes the threshold value variably, a period of repeatedly receiving light at a high cycle occurs at a certain cycle, and at this time, the light reception of the pulsed light Lout cannot be normally discriminated. Therefore, as shown in FIG. 87, a signal SIGN is input to one input terminal of the differential amplifier 440 (here, an input terminal on the positive electrode side) at the output terminal of the amplifier AMPN and the input terminal of the differential amplifier 430, and the other input. The threshold level Thi + 1 may be input to the terminal (here, the input terminal on the negative electrode side). The method of defining the threshold level Thi + 1 may be the same as the method of defining the threshold level Thi + 1. The output terminal of the differential amplifier 440 is connected to the control unit 11. The control unit 11 sets the threshold level so that the level from the differential amplifier 440 is high and the level from the differential amplifier 430 is low, and the threshold level is not changed during this period. Then, the control unit 11 raises the threshold level when both become low levels, and lowers the threshold level when both become high levels. Not limited to the collision warning system 700, it is also possible to deal with the light of other devices and other ambient light.

[13. Other examples of electronic devices]
FIG. 88 shows the electronic device 80 described with reference to FIG. 62 [12. It is a figure which shows the structure of the appearance of the electronic device 80A which adopted the structure described in [other embodiment]. 89 and 90 are six views showing an example of the external configuration of the electronic device 80A. FIG. 89 shows a front view, a top view, a right side view, a bottom view, and a left side view of the electronic device 80A. FIG. 90 shows a rear view of the electronic device 80A. A condenser lens 300 is provided on the back side of the electronic device 80A.

91, 92, and 93 are diagrams showing the internal configuration of the electronic device 80A. The difference from the electronic device 80 of the electronic device 80A is that the light receiving element 843 is formed on the fourth substrate 840 so as to receive the pulsed light. The light receiving element 843 may have the same configuration as the light receiving element 410. The light receiving element 843 is provided on the surface side of the fourth substrate 840 that faces one surface on the condenser lens 300 side. Therefore, the light receiving element 843 receives the light that has passed through the light transmitting portion 842 provided on the fourth substrate 840. The translucent portion 842 is a rectangular parallelepiped opening here. The filter 870 performs the same function as the filter 250. The shield plate 880 functions in the same manner as the shield plate 270. The light receiving element 843 is housed in a shield case 890. The shield case 890 functions in the same manner as the shield case 280. The same effect as that of the electronic device 10A can be obtained in such an electronic device 80A.

[14. Modification example]
(14-1) The condenser lens 300 may be a cylindrical lens or a linear Fresnel lens. In the latter case, the condenser lens 300 becomes thin. Further, the two cylindrical lenses may be arranged so as to form an image at a point on the light receiving element, or the linear Fresnel lens may be arranged so as to be crossed.

(14-2) In the configuration of (14-1), a filter that extracts and passes light of a specific wavelength may be arranged between the two lenses.

In the configurations of (14-3) and (14-1), the focal position of only one lens may be shifted from the position of the light receiving element.

(14-4) As a light receiving element, an APD (avalanche photodiode), MPPC (Multi-Pixel-Photon-Counter) or the like may be used.

(14-5) The electronic device may issue an alarm when the spectrum is separated by a prism or the like and the spectrum is received by a light receiving element at a specific wavelength (for example, a light receiving element at a position of 905 nm. A light receiving element corresponding to a position of another wavelength may be issued. The incident light on the light may be treated as a false alarm source.

(14-6) A light receiving portion may be provided on the front surface of the electronic device to receive light from the rear. For example, it may be compatible with a tracking laser (laser from a police car). The electronic device may record the image of the rear camera for 10 seconds in front and 1 minute after the detection in the rear is stopped, triggered by the light reception of the tracking laser (a). The content of the alarm should be changed depending on whether the electronic device receives light from the front or the back. The electronic device uses an optical fiber to guide either the light on the front side or the light on the rear side. The light may be received by the sensor at the destination of the light.

(14-7) When the electronic device receives the radar wave a predetermined number of times (for example, 21 times) per second, it may notify a predetermined sound (for example, "Gattsudo!").

(14-8) The electronic device may recognize the type of Orbis by image recognition of a camera (for example, an in-vehicle camera 50) and warn the type. When the user utters a voice saying "Is it the current Orbis?", The information "Yes" or "No." Is returned based on the image recognition result.

(14-9) The electronic device is equipped with an optical means (lens, etc.) that collects the half-value angle of one incident light to about 3 degrees or less on the left and right (at present, about 5 degrees), and is from the speed measuring device 30. It may receive light.

(14-9) A light receiving element having a sensor area of less than 1 mm may be used to receive the laser light from the speed control device. The sensor area is currently about 1 mm.

(14-10) A flocked paper may be attached or an antireflection material may be applied to a portion surrounding the optical path between the optical means (for example, the condensing lens 300) and the light receiving element 410 (currently the black tape).

(14-11) A diaphragm member that narrows the optical path may be provided between the optical means (for example, the condenser lens 300).

(14-12) The light incident surface and the light emitting surface of the condenser lens 300 may be polished. Here, a difference may be provided in the degree of polishing of the incident surface and the exit surface. The exit surface should be processed so that the surface is not smooth.

(14-13) The visible light cutting material may not be provided at the position on the outer surface of the housing. It is advisable to provide a transparent cover material at the position of the outer surface of the housing. It is preferable to make at least a part of the components of the bandpass filter visible by looking from the outer surface side of the housing. It is preferable that at least a part of the components of the light receiving element can be visually recognized by looking from the outer surface side of the housing.

(14-14) The condensing lens 300 may have a thickest portion of 3 mm or 4 m or less, for example. In this way, the transmittance is improved.

(14-15) The condenser lens 300 may be formed by molding a visible light cut material and a transparent material in two colors. For example, it is preferable to form a lens with a transparent material and arrange a visible light cut plate behind the lens. For example, it is preferable to press the lens of the other material against the housing with the plate of one material to fix it. It is preferable that the condensing lens 300 and the lens holder holding the condensing lens 300 are integrally formed and brought into contact with the substrate 1030 which is a surface perpendicular to the optical axis of the condensing lens 300 and has the light receiving portion 400. It is preferable to provide the surface of the lens holder and to make the light receiving part come to the optical axis position when a part of the holder is inserted into the hole made in the substrate 1030 (when the lens holder is pressed by the substrate 1030, it automatically becomes the optical axis. Ah, suppress tilt).

(14-16) A hole corresponding to the central portion of the condenser lens 300 may be formed on the lens holder side.

(14-17) The electronic device may record the state of spot dancing of the laser beam with an in-vehicle camera. Recording should be done from the start of laser reception to the end.

(14-17) The electronic device may record a state such as fog with an in-vehicle camera. Recording may be performed from the start of receiving the pulsed light to the end. Infrared light is affected by water droplets, so it is for pointing out erroneous measurements.

(14-18) It is advisable to perform a process of outputting information for determining whether the orbis (fixed type or mobile orbis) was measured in an appropriate installation state from the image taken by the in-vehicle camera.

(14-19) If a radar wave is detected for a certain period of time or more when the power of the electronic device is turned on, "Is there another radar detector nearby? It is a product that emits a terrible disturbing wave. Please keep it away. You may display something like ".".

[15. Modification example of an electronic device having a plurality of light receiving elements such as the first embodiment]
(15-1) The first wavelength selection unit 121 may be configured to include a bandpass filter together with the polarizing filter, or instead of the polarizing filter.

(15-2) The second wavelength selection unit 123 is configured to replace the polarizing filter or include a filter together with the polarizing filter, and more reliably when the pulsed light Lout detection level is high and the other light detection levels are low. It should be treated as an alarm target.

(15-3) Both the first light receiving element 122 and the second light receiving element 124 may be used for detecting pulsed light. In this case, both the first wavelength selection unit 121 and the second wavelength selection unit 123 may be used as filters having characteristics for selecting and receiving light of a specific wavelength.

(15-4) A cylindrical lens (with a size that maintains the width of the existing housing) may be provided so as to straddle the two first light receiving elements 122 and the second light receiving element 124 (for example,). Make sure that the semi-cylindrical lens is in the horizontal direction). A light amount detection balance circuit in which the output voltage of the signals from the two first light receiving elements 122 and the second light receiving element 124 becomes zero when the amount of light entering the two light receiving elements is equal is further added to the existing level detector. You may. When the signals from the two photodiodes rise together, it is detected by a circuit that can detect with high sensitivity.

(15-5) The partition wall (shield) between the first light receiving element 122 and the second light receiving element 124 may be removed. Minimize changes in the housing structure that shorten the distance between the two photodiodes, or detect with sensitivity

(15-6) Japanese Patent No. 6161429 states that two laser light sources are incident on a polygon mirror and reflected to scan a wide area by scanning the laser irradiation direction horizontally around the polygon mirror. For example, the laser oscillates at 0.25 ° intervals, and the four light receiving parts receive light. The data obtained from the scan laser sensor is the distance distribution in the polar coordinate system around the sensor. It is described that this data is acquired in a cycle of 12.5 Hz (80 ms). When a light pattern corresponding to this parameter is detected, it is notified that the laser orbis is used. In particular, it is advisable to identify that a laser of a specific manufacturer has been detected and notify the fact.

[16. Other embodiments]
As shown in FIG. 94, in the electronic device, "OFF" and "AAC / CUSTOM (custom)" may be installed in the radar sensitivity setting. "OFF" does not give an alarm even if the radar is received. Custom can be set in detail as follows. In the past, there was no setting to turn off the alarm display / alarm sound. Therefore, for example, by setting the vehicle speed and the alarm level to the minimum, the number of alarms themselves is reduced, and as a result, false alarms are reduced. The relationship between the mode and the notification control is as shown in FIG. The alarm speed can be set in 11 steps of 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 km / h or more, for example. The alarm level can be set in five stages: ALL (alarm all levels), level 2 or higher, level 3 or higher, level 4 or higher, and level 5 only. For example, since there are many false alarm sources in urban areas, it is advisable not to issue an alarm sound below a certain level. The electronic device may display the alarm without sounding the alarm sound. Further, in the electronic device, when the reception of the radar wave / laser light continues for about 30 seconds or more, the alarm sound should be reduced. Further, the alarm sound may be emitted as shown in FIG. 95.

[16. Other embodiments]
A "masked pato alarm" that applies image recognition may be realized. Currently, undercover police cars (tracking speed violation control) approach from the rear of the vehicle. Such a masked police car cannot be easily judged by its appearance, but in reality, it has some features. Therefore, a "masked patrol alarm" may be issued by using this feature and the position information of the control position. For example, when the position information of the current position has a predetermined proximity relationship with the position information of the public control position or the control POI, the electronic device issues an alarm when it recognizes the above-mentioned characteristics. The characteristics are the characteristics of the car (for example, a specific car model), the number of people in the vehicle is two people wearing blue uniforms, the number of passengers (starting with a specific number), whether to chase behind, before pulling out It suffices to improve the accuracy of the alarm, such as once in 10 times or once in 5 times, based on the difference in the movement of the vehicle after pulling out.

[17. Modification example]
The present disclosure is not limited to the above-described embodiment, and can be appropriately modified without departing from the spirit.

(Modification example 1)
The control unit 11 may determine the presence / absence of the speed measuring device based on a digital value according to the amount of received light for the optical method and an analog value according to the received radio wave for the radar method. This is because the intensity of radio waves may change more gently depending on the distance than the intensity of light. Further, the control unit 11 has different times of continuous reception of pulsed light or microwave, such as 3 seconds in the case of the optical method and 1 second in the case of the radar method, and the presence / absence of these light receptions or receptions. It is good to judge. These times may be the same.

(Modification 2)
When the electronic device 10 detects the presence of an optical speed measuring device, the electronic device 10 may have a dedicated light emitting unit to notify the presence of the device. In this case, the electronic device 10 does not turn on the light emitting unit to notify the presence of another type of speed measuring device. Further, the electronic device 10 may not turn on the light emitting unit other than detecting the existence of the optical speed measuring device. Further, when the electronic device 10 detects the presence of the optical speed measuring device, the light emitting unit may be turned on with a color or pattern peculiar to that case. This light emitting unit may be a light emitting unit 23, or may be another light emitting unit.

(Modification example 3)
The first wavelength selection unit 121 and the second wavelength selection unit 123 do not have to be bandpass filters, respectively. The first wavelength selection unit 121 and the second wavelength selection unit 123 may be composed of, for example, a combination of a low-pass filter and a high-pass filter. Further, the second wavelength selection unit 123 may be a low-pass filter as shown in the characteristics of FIG. 96 (a). In this example, the second wavelength selection unit 123 transmits light in a wavelength region lower than the wavelength λ2a and blocks light in a wavelength region higher than that. The second wavelength selection unit 123 may be a high-pass filter as shown in the characteristics of FIG. 96 (b). In this example, the second wavelength selection unit 123 transmits light in a wavelength region higher than the wavelength λ2b and blocks light in a wavelength region lower than that. Even in this case, the amount of light received by the second signal Sigma 2 becomes extremely small during the period in which the pulsed light Lout is received. The light receiving unit 12 receives not only the pulsed light Lout, which is the object of light reception, but also the disturbance light, and such disturbance light generally has a wide wavelength region in which energy is distributed. Therefore, even when the light receiving unit 12 receives the ambient light that is periodically turned on and off, the amount of light received is considered to be large. Therefore, when the received amount of the first signal Sigma1 is large and the received amount of the second signal Sigma2 is small, that is, when the difference is equal to or more than the threshold value, it can be estimated that the pulsed light Lout is received. On the other hand, when the received amount of the first signal Sig1 is large and the received amount of the second signal Sig2 is also large, that is, when the difference is less than the threshold value, it can be estimated that the possibility that the pulsed light Lout is received is low. .. Therefore, according to the electronic device 10, it is expected that the detection accuracy of the speed measuring device 30 will be improved by receiving light using the first light receiving element 122 and the second light receiving element 124. Further, the first wavelength selection unit 121 and the second wavelength selection unit 123 may be configured by using an optical element other than a filter such as a prism.

(Modification example 4)
In the above-described embodiment, the light receiving unit 12 has two light receiving elements 122 and a second light receiving element 124, but it is also possible to have only one light receiving element 12. FIG. 97 is a diagram showing the configuration of the electronic device 10 in this modified example. In this example, the light receiving unit 12 does not have the first light receiving element 122 and the second light receiving element 124, but has the light receiving element 128. The light receiving element 128 may have the same configuration as the first light receiving element 122 or the second light receiving element 124. Further, the electronic device 10 of this modified example has a drive unit 60. The drive unit 60 moves the first wavelength selection unit 121 and the second wavelength selection unit 123 according to the control of the control unit 11. The drive unit 60 includes, for example, a motor and gears. During the operation of the electronic device 10, the control unit 11 moves the first wavelength selection unit 121 and the second wavelength selection unit 123 so as to alternately cover the light receiving surface of the light receiving element 128. That is, as shown in FIG. 98A, the control unit 11 first provides the first wavelength selection unit 121 on the light receiving surface of the light receiving element 128. Then, the control unit 11 acquires the signal acquired from the light receiving element 128 at this time as the first signal Sig1. Next, as shown in FIG. 98 (b), the control unit 11 first separates the first wavelength selection unit 121 from the light receiving surface of the light receiving element 128, and provides the second wavelength selection unit 123 on the light receiving surface. Then, the control unit 11 acquires the signal acquired from the light receiving element 128 at this time as the second signal Sig2. Then, the control unit 11 detects the speed measuring device 30 based on the first signal Sigma 1 and the second signal Sigma 2.

(Modification 5)
In the above-described embodiment, the light receiving unit 12 has two light receiving elements 122 and a second light receiving element 124, but it is preferable that the light receiving unit 12 has three or more light receiving elements. Even in this case, the control unit 11 can expect an improvement in the detection accuracy of the speed measuring device 30 by making the wavelength region of the selected light different for each of the three or more light receiving elements.

(Modification 6)
In the above description, the light receiving unit 12 has at least one set of a wavelength selection unit and a light receiving element. Instead of this, the light receiving unit 12 may have a configuration in which it does not have a wavelength selection unit and has at least one light receiving element. For example, the light receiving unit 12 may receive a third light receiving amount when a specific wavelength is selected and received, instead of the second light receiving amount which is the light receiving amount of light having a wavelength different from the specific wavelength. In this case, the control unit 11 may perform control to notify the presence of the speed measuring device 30 based on the second light receiving amount and the third light receiving amount.

Further, the light receiving unit 12 may receive the light incidented by a single light receiving element. Then, the control unit 11 may perform control to notify the presence of the speed measuring device 30 based on the pulse width or the pulse interval specified based on the received light amount of the light received by the light receiving unit 12. The method using the pulse width or the pulse interval may be the same as the modification of the first embodiment described above. The control unit 11 may perform control to notify the presence of the speed measuring device 30 when the pulsed light Lout having at least one waveform is received.

(Modification 7)
The light receiving element may be an image pickup element included in a camera such as a drive recorder. For example, the control unit 11 acquires an image captured by the vehicle-mounted camera 50 and performs image analysis. The in-vehicle camera is preferably a camera that does not have an infrared cut filter. This is to prevent the pulsed light Lout from being blocked. Then, when the light of a specific pattern is received as a result of the image analysis, the control unit 11 controls to notify the existence of the speed measuring device 30. The control unit 11 may detect a specific pattern of light based on a change in brightness indicating that the light has a specific wavelength. When the light of a specific pattern is received, the control unit 11 may record a captured image for a period corresponding to the light receiving period. The period is, for example, a period of one minute before and after the timing when a specific pattern of light is received, but is not limited to this.

(Modification 8)
The electronic device 10 may detect the speed measuring device 30 behind the vehicle 40. In this case, the light receiving unit 12 may be arranged so that the pulsed light from the vehicle 40 can be received.

(Modification 9)
When the electronic device 10 detects the speed measuring device 30, it may upload information such as position information indicating the position of the speed measuring device 30 to the server. The server may be a server that provides a social networking service, or may be a server that manages and distributes updated information about the notification target.

The user may be inquired in advance or at each detection or transmission timing as to whether or not the electronic device 10 can transmit the position information. If consent is obtained in advance, the burden on the user will be reduced. The server may store the location information and distribute it to another electronic device 10. When the electronic device receives the position information from the server, it notifies when it approaches the position indicated by the position information. The notification may be performed by the method already described, but the control unit 11 may display, for example, an icon as information clearly indicating that the notification is based on the posted information. Further, the notification based on the posted information may be performed only within a predetermined period from the detection of the existence of the speed measuring device or the transmission timing of the position information. This is because crackdowns are often carried out at fixed times.

Further, the system according to the present disclosure can be applied to detect a light emitting device that emits light having a specific wavelength, in addition to the detection of the speed measuring device.

(Modification example 10)
Some of the configurations and operations described in each of the above embodiments may be omitted or modified. For example, the electronic device 10 may be a device that supports the optical system and does not support the radar system. Further, for example, the position, shape, and size of each member in the electronic device 10 are only an example. Further, the light receiving unit 12 may be provided outside the electronic device 10. For example, the light receiving unit 12 may be provided at a predetermined position on the vehicle 40 such as the license plate, the bonnet, the inside of the door mirror or the grill. In this case, the control unit 11 may acquire a signal from the light receiving unit 12 via the communication unit 17.

(Modification 11)
Further, the control unit 11 may determine whether or not the speed measuring device 30 exists, and if at least determines that the speed measuring device 30 exists, output a signal indicating the determination result to the external device. .. This external device may notify that the speed measuring device 30 is present. The present invention can also be specified by a control device (for example, a control module) incorporated in the electronic device 10 and having the same function as the control unit 11.

(Modification 12)
The GPS receiver of the above-described embodiment can be read as a GNSS receiver having an antenna for receiving a signal from a Global Navigation Satellite System (GNSS) and a processing circuit for processing the received signal. Is. Positioning by GNSS is generally used as GPS positioning. The position information obtained by the positioning process using the GNSS receiving unit is information representing the positioning point of the position of the electronic device 10 in a coordinate format, and includes at least well information and longitude information.

The scope of the invention is not limited to the configurations expressly described herein, but also includes combinations of various aspects of the invention disclosed herein. Of the present invention, the configuration for which a patent is sought is specified in the appended claims, but even if the configuration is not currently specified in the claims, it is disclosed in the present specification. We intend to make this configuration the scope of claims in the future.

The present invention is not limited to the configuration described in the above-described embodiment. The components of each of the above-described embodiments and modifications may be arbitrarily selected and combined. Further, any component of each embodiment or modification, and any component described in the means for solving the invention or any component described in the means for solving the invention are embodied. And may be configured in any combination. We also intend to acquire the rights to these in the amendment or divisional application of the present application. Further, even if there is a description of "in the case of" or "in the case of", it is not described as a configuration limited to that case or at that time. It also discloses these cases and unusual configurations, and has the intention to acquire the rights. In addition, the places where the description is accompanied by an order are not limited to this order. It also discloses a configuration in which some parts have been deleted or the order has been changed, and it has the intention of acquiring rights.

In addition, he / she intends to acquire the right to the whole design or the partial design by filing a change application to a design application. Although the entire drawing of the device is drawn with solid lines, it is a drawing that includes not only the whole design but also the partial design requested for a part of the device. For example, it is a drawing which includes a part of the device as a partial design regardless of the member as well as a part of the member of the device as a partial design. As a part of the device, it may be a part of the device or a part of the member. Not only the whole design, but also the partial design in which any part of the solid line part of the drawing is a broken line part is intended to be granted the right.

10: Electronic device 10A: Electronic device 11: Control unit 12: Light receiving unit 12A: Light receiving unit 12B: Light receiving unit 12C: Light receiving unit 13: Display unit 14: Speaker 15: Microwave receiving unit 16: GPS receiving unit 17: Communication unit 18: Storage unit 19: Operation unit 20: Sensor unit 21: Mounting unit 22: Power supply unit 23: Light emitting unit 24: Cable terminal unit 30: Speed measuring device 31: Speed measuring unit 32: Imaging unit 33: Strobe 40: Vehicle 41 : Dashboard 42: Front glass 43: Room mirror 50: In-vehicle camera 60: Drive unit 70: Camera 80: Electronic device 80A: Electronic device 81: Cable 90: Sensor device 100: Housing 100A: Housing 101: First window 102: Second window 103: Partition 104: Region 121: First wavelength selection unit 122: First light receiving element 123: Second wavelength selection unit 124: Second light receiving element 125: Interface 126: Visible light cut filter 127: Visible light Cut filter 128: Light receiving element 171: Wireless module 201: Illumination sensor 221: Power switch 222: DC jack 223: Button battery 250: Filter 270: Shield plate 300: Condensing lens 310: Incident surface 311: Curved surface 312: Emission surface 313 : Flat surface 314A: Leg 314B: Leg 400: Light receiving part 410: Light receiving element 430: Differential amplifier 440: Differential amplifier 500: Reflecting part 600: Reflecting part 801: First housing 802: Second housing 803 : Lid part 810: First board 820: Second board 830: Third board 840: Fourth board 841: Light receiving part 842: Translucent part 843: Light receiving element 850: Antenna part 851: Processing circuit 860: GPS receiving part 870 : Filter 880: Shield plate 1001: First housing 1002: Second housing 1002A: Second housing 1003: Lid 1006: Lens holder 1010: First substrate 1030: Second substrate 1031: Shield case 1033: Translucent Part 1331: Control circuit

Claims (7)

It is a system that controls to issue an alarm in response to the reception of laser light for measuring the speed of a vehicle.
A housing with windows and
With the lens
A lens holder that holds the lens and
A substrate arranged inside the housing and provided with a light receiving portion,
A control unit that controls to issue an alarm in response to the laser beam received by the light receiving unit.
With
The lens holder is arranged at a position where the light that has passed through the window and the lens is received by the light receiving portion.
The window, rather than the height direction of the vehicle have long in the width direction of the vehicle
System. It is a system that controls to issue an alarm in response to the reception of laser light for measuring the speed of a vehicle.
A housing with windows and
With the lens
A lens holder that holds the lens and
A substrate arranged inside the housing and provided with a light receiving portion,
A control unit that controls to issue an alarm in response to the laser beam received by the light receiving unit.
With
The lens holder is arranged at a position where the light that has passed through the window and the lens is received by the light receiving portion.
The window is horizontally long
system. The system according to claim 1 or 2, wherein the lens holder is arranged at a position where the passed light is received by the light receiving portion by inserting a part of the lens holder into a hole formed in the substrate. Any one of claims 1 to 3, wherein the lens holder is configured such that the light receiving portion is positioned at the optical axis position of the lens by inserting a part of the lens holder into a hole formed in the substrate. the system according to. The system according to any one of claims 1 to 4 , further comprising a case made of a material for preventing the propagation of the laser beam, which covers the light receiving element of the light receiving portion. The case has a side surface on the side of the first side extending in the width direction of the vehicle and a side surface on the side of the second side intersecting the first side.
The system according to claim 5 , wherein the first side is longer than the second side. The substrate has a first surface on the lens side and a second surface facing the first surface.
The light receiving element of the light receiving portion is provided on the second surface side of the substrate.
The system according to any one of claims 1 to 6 , wherein the substrate is provided with a light transmitting portion for guiding light from the first surface side to the light receiving element.

Images