System, program and the like

Abstract

To provide a technique for notifying a user of the presence of a light-emitting device emitting light of a specific wavelength.SOLUTION: An electronic device 10 provided herein is a system installed in a vehicle 40. The electronic device 10 comprises: a light reception unit configured to selectively receive light of a specific wavelength contained in incident light, for example outside a visible light region, and output a signal corresponding to received light intensity; and a control unit configured to conduct first notification control to notify a user of the presence of a light-emitting device emitting the light of the specific wavelength based on the signal outputted by the light reception unit.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a system, a program, and the like. [Background technology]

[0002] There are various types of systems for measuring the speed of vehicles traveling on a road. In the case of the radar type, a speed measuring device installed along the road emits microwaves of a specific frequency band toward the vehicle and receives the reflected waves from the vehicle to measure the traveling speed of the vehicle.

[0003] It may be useful for users such as vehicle drivers to know in advance the presence of a speed measuring device. Patent Documents 1 and 2 disclose electronic devices that receive microwaves emitted from a vehicle speed measuring device and output an alarm if the presence of the vehicle speed measuring device is detected. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2008-64588 A [Patent Document 2] JP 2017-96728 A Summary of the Invention [Problem to be solved by the invention]

[0005] The moving speed of an object can also be measured using light. In this optical method, a light emitting device emits light toward an object and receives a reflected wave from the object to measure the moving speed. Even when such an optical speed measuring device is installed, it is desirable to be able to notify a user of its presence. One of the objects of the present invention is to provide a technology for notifying a user of the presence of a light emitting device that emits light of a specific wavelength.

[0006] The purpose of the present invention is not limited to this, and the applicant intends to obtain rights for configurations that aim to obtain effects from parts of the configurations disclosed in this specification and drawings, etc., by filing a divisional application, amendment, etc. For example, this specification discloses a problem in which the part described as "can be" in this specification is read as "the problem is to be". The problems are described as being independent, and the applicant intends to obtain rights for the configurations for solving each problem separately by filing a divisional application, amendment, etc. Even if the problems are implicitly understood from the description in the specification, the applicant intends to include part of the configurations described in this specification in the scope of the patent claim by amendment or divisional application. In addition, the applicant has disclosed a configuration that solves a problem that combines these independent problems, and intends to obtain rights for it. [Means for solving the problem]

[0007] (1) A system that is installed in a vehicle and that emits light of a specific wavelength to notify the presence of a device that detects the presence of the vehicle, comprising: a focusing lens including an entrance surface having an aspheric curved surface and an exit surface from which light that is incident on the entrance surface exits; and a light receiving element that receives the light that is exited from the exit surface; and a control unit that performs control to notify the presence of the light emitting device based on the light of the specific wavelength received by the light receiving element.

[0008] In this way, a technique can be provided for notifying a user of the presence of a light emitting device that emits light of a specific wavelength. In particular, by using a condenser lens having an entrance surface with an aspherical curved surface, the light receiving element can receive light coming from a wide range in a predetermined direction, so that the presence of the light emitting device can be more reliably notified.

[0009] The light emitting device may be a device that emits light whose energy is distributed in at least a narrower wavelength range than the disturbance light. The disturbance 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 is at its peak. The specific wavelength may be a wavelength that is not perceived by humans, and may have energy at a specific wavelength outside the visible light range, for example. The specific wavelength may belong to the infrared light range, and may be 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 is at its peak. The wavelength different from the specific wavelength may be a wavelength included in the visible light range. The amount of received light may indicate the amount of light of a specific wavelength selected and received by the light receiving unit. Selecting a wavelength may mean selecting a part of wavelengths from a certain wavelength range and not selecting at least a part of other wavelengths. The notification control may refer to control for notifying information in a manner that can be recognized by the user.

[0010] (2) The entrance surface may include a convex curved surface along a width direction of the vehicle.

[0011] In this way, the light receiving element can receive light coming from a wide range in the width direction of the vehicle, so that the presence of the light emitting device can be more reliably notified.

[0012] (3) It is preferable that the length of the incident surface in the width direction of the vehicle is greater than the length of the incident surface in the height direction of the vehicle.

[0013] In this way, the light receiving element can receive light coming from a wide range in the width direction of the vehicle, so that the presence of the light emitting device can be more reliably notified.

[0014] (4) The entrance surface may include a convex curved surface along both a width direction and a height direction of the vehicle.

[0015] In this way, the light receiving element can receive light coming from a wide range of directions, making it possible to more reliably notify the presence of the light emitting device.

[0016] (5) The entrance surface may include a convex curved surface along a width direction of the vehicle and a flat curved surface along a height direction of the vehicle.

[0017] In this way, the light receiving element can receive light coming from a wide range in the width direction of the vehicle, so that the presence of the light emitting device can be more reliably notified.

[0018] (6) The emission surface may include a flat surface.

[0019] In this way, the light receiving element can receive light coming from a wide range in the width direction of the vehicle, so that the presence of the light emitting device can be more reliably notified.

[0020] (7) The light receiving element may be disposed at a position closer to the condenser lens than the focal distance position of the condenser lens.

[0021] In this way, by disposing the light receiving element at a position closer to the condenser lens than the focal distance position, it is possible to receive light with a wide incidence angle.

[0022] (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 a reference pulse width.

[0023] Referencing the pulse width of the received light can be useful in detecting a light emitting device that emits a specific pulse of light, which can reduce notifications that mistakenly identify ambient light as light from a light emitting device.

[0024] (9) The control unit may perform control to notify the presence of the light emitting device when pulsed light having a pulse width of 20 ms is received.

[0025] In this way, it is possible to notify the presence of a light-emitting device that measures the speed of a vehicle and is conducting enforcement.

[0026] (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 a reference pulse interval.

[0027] Referencing the pulse interval of the received light may be useful in detecting a light-emitting device that emits a specific pulse light, which can reduce notifications that mistakenly identify ambient light as light from a light-emitting device.

[0028] (11) The control unit may perform control to notify the presence of the light emitting device when pulsed light having a pulse interval of 80 ms is received.

[0029] In this way, it is possible to notify the presence of a light-emitting device that measures the speed of a vehicle and is conducting enforcement.

[0030] (12) The control unit may change a level of the notification in accordance with at least one of a pulse width and a pulse interval of the light received by the light receiving unit.

[0031] In this way, the user can know how important the content of the notification is.

[0032] (13) The control unit may perform control to notify the presence of the light emitting device when a pulse of light of the specific wavelength is received at least once.

[0033] In this way, the user can immediately recognize the presence of the fermentation apparatus.

[0034] (14) It is preferable that the optical fiber has a reflecting portion that reflects at least a portion of the light emitted from the condenser lens toward the light receiving element.

[0035] This increases the amount of light received by the light receiving element from the light emitting device, making it possible to more reliably notify the presence of the light emitting device.

[0036] (15) The reflecting portion may be provided at a position different from the optical path from the lens to the light receiving element, and may include a reflecting surface that reflects at least a portion of the light emitted from the lens toward the light receiving element.

[0037] This increases the amount of light received by the light receiving element from the light emitting device, making it possible to more reliably notify the presence of the light emitting device.

[0038] (16) The reflecting surface may be disposed so as to surround the optical path.

[0039] This increases the amount of light received by the light receiving element from the light emitting device, making it possible to more reliably notify the presence of the light emitting device.

[0040] (17) The reflecting portion may include a member that is provided on an optical path from the lens to the light receiving element and that reflects at least a portion of the light emitted from the lens toward the light receiving element by utilizing total reflection of light.

[0041] This increases the amount of light received by the light receiving element from the light emitting device, making it possible to more reliably notify the presence of the light emitting device.

[0042] (18) The light-emitting device may further include an amplifier that amplifies a signal corresponding to the amount of light received from the light-receiving element, and a differential amplifier that outputs a signal corresponding to the difference between the level of the amplified signal and a threshold level, and the control unit may perform control to notify the presence of the light-emitting device based on the signal corresponding to the difference.

[0043] In this way, the amount of light received by the light receiving element from the light emitting device is amplified, so that the presence of the light emitting device can be notified more reliably.

[0044] (19) The control unit may perform control to change the threshold level.

[0045] In this way, it is possible to reduce the possibility that control for reporting the presence of the light emitting device will not be possible due to the influence of disturbance light or electromagnetic noise.

[0046] (20) The control unit may set the threshold level so as to exceed at least the level of light emitted by equipment installed in the vehicle.

[0047] In this way, it is possible to reduce the possibility that control for notifying the presence of the light-emitting device will not be possible due to the influence of light emitted by equipment provided in the vehicle.

[0048] (21) The optical fiber may have a substrate including a first surface on the focusing lens side and a second surface opposite the first surface, the light receiving element is provided on the second surface side of the substrate, and a light transmitting portion is provided on the substrate to guide light from the first surface side to the light receiving element.

[0049] In this way, the substrate is located between the light receiving element and the light receiving element lens, so that the space equivalent to the focal length can be effectively utilized and the thickness of the entire housing can be reduced.

[0050] The present invention may also be specified as follows. (A) A system is provided that is installed in a vehicle and has a light receiving unit that selects and receives light of a specific wavelength from incident light and outputs a signal according to the amount of light received, and a control unit that performs first notification control to notify of the presence of a light emitting device that emits light of the specific wavelength based on the signal output by the light receiving unit.

[0051] In this way, it is possible to provide a technique for notifying a user of the presence of a light emitting device that emits light of a specific wavelength.

[0052] The light emitting device may be a device that emits light whose energy is distributed in at least a narrower wavelength range than the disturbance light. The disturbance 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 is at its peak. The specific wavelength may be a wavelength that is not perceived by humans, and may have energy at a specific wavelength outside the visible light range, for example. The specific wavelength may belong to the infrared light range, and may be 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 is at its peak. The wavelength different from the specific wavelength may be a wavelength included in the visible light range. The amount of received light may indicate the amount of light of a specific wavelength selected and received by the light receiving unit. Selecting a wavelength may mean selecting a part of wavelengths from a certain wavelength range and not selecting at least a part of other wavelengths. The notification control may refer to control for notifying information in a manner that can be recognized by the user.

[0053] (B) The control unit may be a system that performs the first notification control to display an animation image including an image that imitates the light emitting device.

[0054] This makes it easier for the user to recognize the presence of a light-emitting device that a vehicle is approaching.

[0055] (C) The control unit may be a system that performs the first notification control to display at least one of an attribute of the light-emitting device and a state of the vehicle in addition to the animation image.

[0056] In this way, the user can be made aware of at least one of the attributes of the light emitting device and the state of the vehicle.

[0057] (D) The control unit may be a system that performs a second notification control different from the first notification control when the position of the vehicle has a predetermined relationship with the position of the light emitting device.

[0058] In this way, the user can recognize whether he or she is approaching an illumination device that is the source of the light of a specific wavelength received by the system, or an illumination device identified based on the vehicle's position.

[0059] (E) The system may include a radio wave receiving unit that receives a specified radio wave, and the control unit may, upon receiving the specified radio wave, perform a third notification control to notify the presence of a radio wave generating device, and may stop the third notification control during a period in which the first notification control is being performed.

[0060] In this way, when reporting the presence of a light emitting device that emits a specific wavelength, it is possible to avoid reporting the presence of a device that generates radio waves.

[0061] (F) The control unit may be a system that performs the third notification control to display an animation image including an image that imitates the generating device.

[0062] This makes it easier for the user to recognize the presence of a radio wave generating device that the vehicle is approaching.

[0063] (G) The control unit may perform a fourth notification control in accordance with a positional relationship between the vehicle and another vehicle, and the fourth notification control may be performed in parallel with the first notification control.

[0064] There are cases where the priority of reporting information according to the positional relationship between the vehicle and another vehicle is high. When the need for such reporting arises, the information according to the positional relationship between the vehicle and another vehicle can be reported even when the vehicle is approaching the light-emitting device.

[0065] (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.

[0066] In this way, it is possible to prevent unnecessary notification when the vehicle speed is below a predetermined speed.

[0067] (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.

[0068] In this way, when the presence of a light emitting device should be notified depending on the vehicle's position, this can be notified even if the vehicle's speed is less than a predetermined speed.

[0069] (K) The control unit may perform a fifth notification control to notify the status of the vehicle occupants based on an image from a camera that images the passenger compartment of the vehicle, and may stop the fifth notification control while the first notification control is being performed.

[0070] In this way, when reporting the presence of a light emitting device emitting a specific wavelength, it is possible to prevent the status of the vehicle occupants from being reported.

[0071] (L) The system may have a housing having a light-transmitting portion that transmits at least the specific wavelength, and the light-receiving portion is disposed inside the housing and receives the specific wavelength from the light incident through the light-transmitting portion.

[0072] In this way, light of a specific wavelength can be received using the light receiving section housed within the housing.

[0073] (M) The light receiving unit may have a first filter facing the light transmitting unit, a first light receiving element that receives light that has passed through the first filter, a second filter facing the light transmitting unit, and a second light receiving element that receives light that has passed through the second filter, and the housing may be a system having a first window corresponding to the first light receiving element and a second window corresponding to the second light receiving element.

[0074] In this way, the presence of the light emitting device can be notified by a configuration using at least two pairs of light receiving elements housed in the housing.

[0075] (N) The first light receiving element and the second light receiving element may be housed in a shielding case made of a conductive material, and the space in which the first light receiving element is housed and the space in which the second light receiving element is housed may be separated by a partition.

[0076] In this way, the signal output by the light receiving element is less susceptible to the effects of electromagnetic noise than if it were not shielded with a conductive material.

[0077] (O) A system having a display unit for displaying an image, a first board facing the display unit and having mounted thereon a control circuit for executing part or all of the functions of the control unit and a radio wave receiving unit for receiving predetermined radio waves, and a second board facing the first board on the opposite side to the display unit and having mounted thereon the light receiving unit and a GNSS (Global Navigation Satellite System) receiving unit arranged adjacent to the light receiving unit, wherein at least a part of the radio wave receiving unit is mounted on the side of the first board facing the second board, and the second board is cut out in an area where at least a part of the radio wave receiving unit is present.

[0078] In this way, the thickness of the system can be prevented from increasing.

[0079] (P) The control unit may control the output of sound from a speaker, the speaker may be provided adjacent to the GNSS receiving unit, and the speaker and the GNSS receiving unit may be positioned above the radio wave receiving unit.

[0080] In this way, the thickness of the system can be prevented from increasing.

[0081] (Q) The second substrate may have a first region and a second region that is shorter in the vertical direction than the first region and protrudes upward than the first region, and the light receiving unit is mounted in the first region and the GNSS receiving unit is mounted in the second region.

[0082] In this way, the thickness of the system can be prevented from increasing.

[0083] (R) A system having 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, the antenna unit being positioned adjacent to the substrate, and the normal direction of the antenna unit intersecting with the normal direction of the substrate.

[0084] In this way, it is possible to provide a technique for notifying a user of the presence of a light emitting device while minimizing changes to existing systems.

[0085] (S) The control unit may be a system that performs control to notify the presence of a light emitting device that emits light of the specific wavelength when a predetermined reflective material pattern is recognized.

[0086] In this way, the presence of a light emitting device can be notified in a location where the presence of the light emitting device is highly likely, thereby reducing the possibility of false notification.

[0087] (T) A program for causing a computer to realize the functions of the control unit of any of the above systems is provided.

[0088] In this way, it is possible to provide a technique for notifying a user of the presence of a light emitting device that emits light of a specific wavelength.

[0089] The inventions shown in (1) to (20) and (A) to (T) above can be arbitrarily combined. For example, it is preferable to add at least a part of the configuration of at least one of the inventions from (2) onwards to all or a part of the configuration of the invention shown in (1). In particular, it is preferable to add at least a part of the configuration of at least one of the inventions from (2) onwards to the invention shown in (1). In addition, it is also possible to extract any configuration from the inventions shown in (1) to (20) and (A) to (T) and combine the extracted configurations. The applicant of this application intends to obtain rights to the inventions including these configurations. In addition, even if there is a description such as "in the case of ~" or "when ~", it is not intended to describe the configuration as being limited to that case or time. These are examples of better configurations, and the applicant intends to obtain rights for configurations other than these cases or times. In addition, the parts described in order are not limited to this order. Configurations in which some parts have been deleted or the order has been changed are also disclosed, and the applicant intends to obtain rights. Effect of the Invention

[0090] According to the present invention, it is possible to notify a user of the presence of a light emitting device that emits light of a specific wavelength.

[0091] The effects of the invention of this application are not limited to this, and effects obtained from the configuration disclosed in the specification and drawings, etc. are also disclosed, and the intention is to obtain rights to the configuration that achieves the effects by divisional applications, amendments, etc. For example, in this specification, the phrase "can" is a description that clearly indicates the effect that is achieved, and there are also parts that show the effect even without the phrase "can." Also, there are effects that can be understood from the configuration even without such a description. [Brief description of the drawings]

[0092] [Figure 1] 1 is a diagram showing a configuration of an electronic device according to a first embodiment. [Diagram 2] 3 is a diagram showing an example of a waveform of a pulsed light emitted by the speed measurement device according to the first embodiment. [Diagram 3] FIG. 2 is a rear view of the electronic device according to the first embodiment. [Figure 4] 1 is a cross-sectional view of an electronic device according to a first embodiment. [Diagram 5] 1 is a cross-sectional view of an electronic device according to a first embodiment. [Figure 6] 4A to 4C are diagrams illustrating an example of schematic characteristics of a first wavelength selecting section and a second wavelength selecting section according to the first embodiment. [Figure 7] 1 is a block diagram showing an electrical configuration of an electronic device according to a first embodiment. [Figure 8] 5 is a flowchart showing the operation of the electronic device according to the first embodiment. [Figure 9] FIG. 2 is a diagram showing an example of a display screen of the electronic device according to the first embodiment. [Figure 10] FIG. 2 is a diagram showing an example of a display screen of the electronic device according to the first embodiment. [Figure 11] FIG. 2 is a diagram showing an example of a display screen of the electronic device according to the first embodiment. [Figure 12] FIG. 2 is a diagram showing an example of a display screen of the electronic device according to the first embodiment. [Figure 13] 5 is a flowchart showing the operation of the electronic device according to the first embodiment. [Figure 14] FIG. 2 is a diagram showing an example of a display screen of the electronic device according to the first embodiment. [Figure 15] 10A and 10B are diagrams illustrating an example of a waveform of pulsed light received by an electronic device according to a modified example of the first embodiment. [Figure 16] FIG. 11 is a diagram showing an example of a display screen of an electronic device according to a modified example of the first embodiment. [Figure 17] 10A and 10B are diagrams illustrating the reason why the number of pulses of pulsed light received by an electronic device according to a modified example of the first embodiment decreases. [Figure 18] 10 is a flowchart showing the operation of an electronic device according to a modified example of the first embodiment. [Figure 19] FIG. 11 is a diagram illustrating an overview of a system according to a second embodiment. [Figure 20]10 is a flowchart showing the operation of the electronic device according to the second embodiment. [Figure 21] FIG. 11 is a diagram showing an example of a display screen of the electronic device according to the second embodiment. [Figure 22] FIG. 11 is a block diagram showing the configuration of a system according to a third embodiment. [Diagram 23] 13 is a diagram illustrating an example of schematic characteristics of a first wavelength selecting section and a second wavelength selecting section according to the third embodiment. FIG. [Figure 24] FIG. 11 is a block diagram showing an example of an arrangement of light receiving sections in a system according to a third embodiment. [Diagram 25] FIG. 13 is a diagram showing an example of a circuit configuration of a light receiving unit according to a modified example. [Figure 26] 1A to 1C are six views illustrating an example of an external configuration of an electronic device. [Figure 27] 13 is a diagram showing an example of a notification screen displayed when the electronic device receives pulsed light from a mobile speed measurement device in another embodiment. FIG. [Figure 28] 13 is a diagram showing an example of an animation image displayed in the information display area TA2. FIG. [Figure 29] FIG. 29 is a diagram showing an example of an animation image following FIG. 28. [Diagram 30] 13 is a diagram showing an example of a notification screen displayed when the electronic device receives pulsed light from a mobile speed measurement device in another embodiment. FIG. [Diagram 31] 13 is a diagram showing an example of an animation image displayed in the information display area TA3. FIG. [Diagram 32] FIG. 32 is a diagram showing an example of an animation image following FIG. 31. [Diagram 33] 13 is a diagram showing an example of a notification screen when a micro-type speed measuring device is detected in an electronic device according to another embodiment. FIG. [Diagram 34] FIG. 13 is a diagram showing an example of an animation image displayed in the information display area TA5. [Diagram 35] FIG. 35 is a diagram showing an example of an animation image following FIG. 34. [Diagram 36]FIG. 13 is a diagram showing the relationship between received microwaves and a reporting method in another embodiment. [Figure 37] 13 is a diagram showing the relationship between the detection method and the notification method of a speed measurement device in another embodiment. [Figure 38] FIG. 13 is a diagram showing an example of a notification screen regarding a collision warning in another embodiment. [Figure 39] 13 is a diagram illustrating a warning regarding distracted driving and drowsy driving in another embodiment. FIG. [Diagram 40] FIG. 13 is a diagram showing an example of a notification screen relating to a warning regarding distracted driving and drowsy driving in another embodiment. [Diagram 41] FIG. 13 is a diagram showing an example of a notification screen relating to a warning regarding distracted driving and drowsy driving in another embodiment. [Diagram 42] FIG. 13 is a diagram illustrating a GPS warning in another embodiment. [Diagram 43] 13 is a table illustrating notification control performed by an electronic device according to another embodiment. [Diagram 44] 13 is a diagram showing a notification screen when an electronic device receives pulsed light from a mobile speed measurement device in another embodiment. FIG. [Diagram 45] FIG. 13 is a diagram showing a notification screen when a radar-based speed measurement device is detected in an electronic device according to another embodiment. [Figure 46] 13A and 13B are diagrams illustrating notification timing and a notification method according to another embodiment. [Figure 47] 13A and 13B are diagrams illustrating notification timing and a notification method according to another embodiment. [Figure 48] 13A and 13B are diagrams illustrating notification timing and a notification method according to another embodiment. [Figure 49] FIG. 13 is a perspective view illustrating an example of an external configuration of an electronic device according to another embodiment. [Figure 50] 13A to 13C are six views illustrating an example of an external configuration of an electronic device according to another embodiment. [Figure 51] 13A to 13C are six views illustrating an example of an external configuration of an electronic device according to another embodiment. [Figure 52]FIG. 11 is a rear view of an electronic device with a lid removed according to another embodiment. [Figure 53] FIG. 11 is an exploded perspective view of an electronic device according to another embodiment. [Figure 54] 13 is a rear view showing a state in which a second housing is further removed from the electronic device according to another embodiment. FIG. [Figure 55] FIG. 11 is a perspective view showing an internal configuration of an electronic device according to another embodiment. [Figure 56] FIG. 11 is a perspective view showing an internal configuration of an electronic device according to another embodiment. [Figure 57] FIG. 11 is a perspective view showing an internal configuration of an electronic device according to another embodiment. [Figure 58] FIG. 13 is a photograph of a second substrate in another embodiment. [Figure 59] FIG. 13 is a diagram illustrating an example of a configuration of a light receiving unit according to another embodiment. [Figure 60] FIG. 11 is a diagram illustrating an example of a filter characteristic according to another embodiment. [Figure 61] FIG. 1 is a diagram illustrating a configuration of the electronic device when a second substrate is removed; [Figure 62] FIG. 13 is a perspective view showing an external configuration of an electronic device as another example according to another embodiment. [Figure 63] FIG. 11 is a perspective view showing an external configuration of an electronic device according to another embodiment. [Figure 64] FIG. 11 is a perspective view showing an internal configuration of an electronic device according to another embodiment. [Figure 65] FIG. 11 is a perspective view showing an internal configuration of an electronic device according to another embodiment. [Figure 66] FIG. 11 is a perspective view showing an internal configuration of an electronic device according to another embodiment. [Figure 67] 11A to 11C are diagrams illustrating a noise reduction method for an electronic device according to another embodiment. [Figure 68] FIG. 13 is a diagram illustrating another embodiment. [Figure 69] FIG. 13 is a diagram illustrating another embodiment. [Figure 70] FIG. 13 is a diagram illustrating another embodiment. [Figure 71] FIG. 13 is a diagram illustrating another embodiment. [Figure 72] 1 is a diagram showing a configuration of an electronic device according to an embodiment of the present invention, viewed from diagonally above and to the right on the rear side. [Figure 73] 1A to 1C are six views showing an example of an external configuration of an electronic device according to an embodiment of the present invention. [Figure 74] 2 is a diagram showing a state in which a second housing is removed from the electronic device of the present embodiment. FIG. [Figure 75] FIG. 13 is a diagram showing a state in which a lens is further removed from the electronic device of the embodiment. [Figure 76] 13 is a diagram showing a state in which a filter and a shield plate are further removed from the electronic device of the embodiment. FIG. [Figure 77] FIG. 77 is a diagram of FIG. 76 with the substrate removed. [Figure 78] 1A to 1C are six-view diagrams illustrating an example of a lens configuration according to an embodiment of the present invention. [Figure 79] 1A and 1B are diagrams illustrating an experiment to confirm that an aspheric lens can receive light with a wide angle of incidence. [Figure 80] FIG. 2 is a diagram illustrating an example of an electrical configuration of a light receiving unit according to the present embodiment. [Figure 81] 1 is a diagram showing an example of a configuration in which a reflecting section is applied to the electronic device of the present embodiment; [Figure 82] 1 is a diagram showing an example of a configuration in which a reflecting section is applied to the electronic device of the present embodiment; [Figure 83] 3A and 3B are diagrams illustrating light received by the electronic device of the embodiment from a collision warning system. [Figure 84] 11 is a graph showing an example of a change over time in the level of light received by a light receiving section. [Figure 85] FIG. 2 is a diagram illustrating an example of an electrical configuration of a light receiving unit according to the present embodiment. [Figure 86] FIG. 4 is a diagram illustrating a method for setting a threshold value according to the present embodiment. [Figure 87] FIG. 13 is a diagram showing an example of a modified electrical configuration of a light receiving unit. [Figure 88]1 is a diagram showing a configuration of an electronic device according to an embodiment of the present invention, viewed from diagonally above and to the right on the rear side. [Figure 89] 1A to 1C are six views showing an example of an external configuration of an electronic device according to an embodiment of the present invention. [Figure 90] 1A to 1C are six views showing an example of an external configuration of an electronic device according to an embodiment of the present invention. [Figure 91] FIG. 2 is a diagram showing the internal configuration of the electronic device of the present embodiment. [Figure 92] FIG. 2 is a diagram showing the internal configuration of the electronic device of the present embodiment. [Figure 93] FIG. 2 is a diagram showing the internal configuration of the electronic device of the present embodiment. [Figure 94] 1 is a diagram showing an external configuration of an electronic device according to an embodiment of the present invention; [Figure 95] 1A to 1C are six views showing an example of an external configuration of an electronic device according to an embodiment of the present invention. [Figure 96] 2 is a diagram showing a state in which a second housing is removed from the electronic device of the present embodiment. FIG. [Figure 97] FIG. 13 is a diagram showing a state in which a condenser lens is further removed from the electronic device of the embodiment. [Figure 98] 2 is a diagram showing a state in which a first housing is removed from the electronic device of the present embodiment. FIG. [Figure 99] 1 is a diagram showing a state in which the electronic device of the present embodiment is attached to a dashboard using a first attachment member. [Figure 100] 3A to 3C are diagrams showing the external configuration of a first mounting member according to the present embodiment. [Figure 101] 4A to 4C are diagrams illustrating a method of attaching an electronic device using the first attachment member of the present embodiment. [Figure 102] 13 is a diagram showing a state in which the electronic device of the present embodiment is attached in a suspended state using a second attachment member. FIG. [Figure 103] 4A to 4C are diagrams showing the external configuration of a second mounting member of the present embodiment. [Figure 104] 4A to 4C are diagrams showing the external configuration of a second mounting member of the present embodiment. [Figure 105] 4A to 4C are diagrams showing the external configuration of a second mounting member of the present embodiment. [Figure 106] 10A to 10C are diagrams illustrating a method of attaching an electronic device using the second attachment member of the present embodiment. [Figure 107] 1 is a diagram showing a state in which the electronic device of the present embodiment is attached in a suspended manner using an attachment member. [Figure 108] 1 is a diagram showing a state in which the electronic device of the present embodiment is attached in a suspended manner using an attachment member. [Fig. 109] 1 is a diagram showing a state in which the electronic device of the present embodiment is attached in a suspended manner using an attachment member. [Figure 110] 1A and 1B are diagrams illustrating an external configuration of a mounting member according to the present embodiment. [Figure 111] 1A and 1B are diagrams illustrating an external configuration of a mounting member according to the present embodiment. [Figure 112] 1 is a diagram showing a state in which an electronic device is attached to a windshield using the attachment member of the present embodiment, as viewed from the side. [Figure 113] 1A and 1B are diagrams illustrating an external configuration of a mounting member according to the present embodiment. [Fig. 114] 4A to 4C are six views showing the external configuration of a second mounting member of the present embodiment. [Fig. 115] 1A to 1C are six views showing the external configuration of a mounting member according to an embodiment of the present invention. [Fig. 116] 4A to 4C are diagrams illustrating the operation of the electronic device of the present embodiment. [Fig. 117] 4A to 4C are diagrams illustrating the operation of the electronic device of the present embodiment. [Figure 118] 13A and 13B are diagrams illustrating an example of characteristics of a first wavelength selecting section and a second wavelength selecting section according to a modified example. [Figure 119] 13 is a diagram showing a configuration of a light receiving section according to a modified example. FIG. [Figure 120] FIG. 13 is a diagram illustrating a control performed by a control unit according to a modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0093] Hereinafter, the 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 parts or parts having similar functions are given the same or similar symbols (symbols with A, B, etc. added after the numbers), and repeated explanations may be omitted. In addition, in each figure referred to in the following description, the scale may be different from the actual scale in order to make each member, each area, etc. recognizable. Hereinafter, a case will be described in which the system of the present disclosure is applied to a system mounted on a vehicle and detects a speed measuring device that emits light of a specific wavelength.

[0094] [1. First embodiment] <1-1. Configuration of the first embodiment> FIG. 1 is a diagram showing the 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 optical and radar methods. The electronic device 10 detects a speed measurement device 30. The optical method is a method of detecting light emitted by the speed measurement device 30. In this embodiment, the light emitted by the speed measurement device 30 is pulsed light. More specifically, the light emitted by the speed measurement device 30 is a pulse laser having a certain 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 measurement device (not shown), which is a radio wave generating device. In this embodiment, the predetermined radio wave is a microwave.

[0095] The electronic device 10 is a monitor-type device having a substantially rectangular parallelepiped shape. The electronic device 10 is installed in the passenger compartment of a vehicle 40. The electronic device 10 is installed on a dashboard 41 using, for example, double-sided tape. The housing of the electronic device 10 is a housing 100. An opening is provided on the front side of the housing 100. The electronic device 10 has a display unit 13 for displaying an image at the position of this opening. The housing 100 is formed of resin or other materials.

[0096] The speed measurement device 30 is installed at a vehicle speed control point. The speed measurement device 30 may be, for example, either a fixed type or a mobile type, but is preferably a mobile type. The mobile type includes, for example, a portable type and a type mounted on a vehicle. In the case of a mobile type, even if the position information of the speed control point is not known, the electronic device 10 can detect the speed measurement device 30 by an optical method. In the example of FIG. 1, the speed measurement device 30 is installed on a sidewalk adjacent to a roadway and measures the speed of a vehicle traveling on this roadway. The speed measurement device 30 measures the distance to a vehicle within a predetermined distance (for example, 70 m), and further measures the speed of the vehicle at a point that is a predetermined distance (for example, 20 m) closer to the device itself.

[0097] The speed measurement device 30 includes a speed measurement unit 31, an imaging unit 32, and a strobe 33. The speed measurement 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 measurement unit 31 receives the reflected light Lref. The speed measurement 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 measurement unit 31 repeatedly measures the distance to the vehicle 40, and measures the speed of the vehicle 40 based on the moving distance of the vehicle 40 per unit time.

[0098] The speed measurement unit 31 emits the pulsed light Lout while changing the direction within a sector-shaped range T with a central angle of angle θ. θ is, for example, 110 degrees. The range T includes a wider range on the upstream side in the traveling direction of the vehicle 40 than on the downstream side from the position where the speed measurement device 30 is installed. The speed measurement unit 31 changes the emission direction of the pulsed light Lout in a counterclockwise direction. For example, the speed measurement unit 31 emits the pulsed light Lout in the direction of an arrow D1, and then emits the pulsed light Lout in the direction of an arrow D2. The emission direction of the pulsed light Lout is, for example, approximately horizontal. For example, the speed measurement unit 31 emits the pulsed light to 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.

[0099] The pulsed light Lout has energy concentrated at a specific wavelength. The specific wavelength may be a wavelength at which the energy of the light emitted by the light emitting device is at a peak. The pulsed light Lout desirably has energy at a specific wavelength outside the visible light region, for example. The specific wavelength may be a wavelength that is not perceptible by humans, for example, the pulsed light Lout may have energy at a specific wavelength outside the visible light region. The specific wavelength may be, for example, 905 nm, which belongs to the infrared light region. However, the specific wavelength is not limited to this, and may be 850 nm, 950 nm, 1900 nm, or other wavelengths.

[0100] FIG. 2 is a diagram showing an example of the waveform of the pulsed light Lout emitted from the speed measuring device 30. Here, the pulsed light Lout is a rectangular wave. However, the pulsed light Lout may be a sine wave, a triangular wave, a sawtooth wave, or other waveforms. The pulsed light Lout is light in which periods T1 and T2 appear alternately. The period T1 is a period during which pulsed light of a specific wavelength λout is emitted. In the period T1, the pulsed light Lout alternates between a high level (H) and a low level (L). The period T2 is a period during which 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 this mirror. For this reason, the period during which the pulsed light from the mirror is not directed toward the light emitting window of the speed measuring device 30 is the period T2.

[0101] The imaging unit 32 captures an image of the target vehicle when the speed measured by the speed measurement unit 31 is equal to or greater than a threshold value. The imaging unit 32 is used to capture an image of a vehicle that has violated the speed limit. The strobe 33 emits light when an image is captured by the imaging unit 32. The imaging unit 32 may capture an image based on light in the infrared region so that the image can be captured even at night. In this case, the strobe 33 may emit light having energy in the infrared region. The speed measurement device 30 transmits data such as the measured speed and the captured image to an external computer.

[0102] 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 rear surface of the housing 100. The first window 101 and the second window 102 are openings for guiding external light into the inside of the housing 100. The first window 101 and the second window 102 are arranged at a predetermined interval in the left-right direction. The first window 101 and the second window 102 are, for example, rectangular, but may be of other shapes. A light receiving unit 12 is provided inside the housing 100. The light receiving unit 12 receives light incident through the first window 101 and the second window 102.

[0103] 4 and 5 are cross-sectional views of the electronic device 10. FIG. 4(a) is a cross-sectional view (II cross-sectional view in FIG. 3) of the electronic device 10 cut along the vertical direction at a position including the first window 101. FIG. 4(b) is a cross-sectional view (II-II cross-sectional view in FIG. 3) of the electronic device 10 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 in FIG. 3) of the electronic device 10 cut along the horizontal direction at a position including the first window 101 and the second window 102. FIG. 6 is a graph showing an example of the schematic characteristics of a wavelength selection unit (described later) of the light receiving unit 12. In FIG. 6, the horizontal axis corresponds to the wavelength, and the vertical axis corresponds to the transmittance.

[0104] As shown in FIG. 4(a) and (b), the first window 101 is provided with a visible light cut filter 126. The second window 102 is provided with a visible light cut filter 127. The visible light cut filters 126 and 127 block at least a part of visible light. The visible light cut filters 126 and 127 transmit light of a specific wavelength λout. Blocking visible light may at least attenuate the visible light. The visible light region is, for example, 400 to 700 nm. The presence of the visible light cut filters 126 and 127 makes it difficult for components housed inside the housing 100 to be visually recognized from the outside. In addition, the presence of the visible light cut filters 126 and 127 can reduce adverse effects caused by the light receiving unit 12 receiving strong visible light such as direct sunlight.

[0105] As shown in FIG. 4(a), the first wavelength selection unit 121 and the first light receiving element 122 are provided facing the first window 101. The first wavelength selection unit 121 selects and transmits light of a specific wavelength λout from the incident light. Selecting a wavelength may mean selecting some wavelengths from a certain wavelength range and not selecting at least some other wavelengths. The first wavelength selection unit 121 is a band-pass filter here. As shown by the solid line in FIG. 6, it transmits light of wavelengths in a wavelength range including the specific wavelength λout, here the wavelength range from wavelength λ1a to wavelength λ1b, and blocks light of other wavelength ranges. Blocking light means at least attenuating that light, and the amount of attenuation of the wavelengths that block light is greater than the amount of attenuation of the wavelengths that transmit light. The characteristics of the first wavelength selection unit 121 are determined from the viewpoint of transmitting only light of the same wavelength as the pulse light from the speed measurement device 30 as much as possible. The width of the wavelength range from wavelength λ1a to wavelength λ1b is, for example, 20 nm, but it is more preferable that it is narrower than this.

[0106] In Fig. 6, the transmittance of the frequency region where light passes is expressed as 100%, and the frequency region where light is blocked is expressed as approximately 0%, but it is sufficient if the transmittance is practically tolerable. It is preferable that the wavelength selection section shows a steep characteristic as exemplified in Fig. 6, but it may show a broader characteristic. For example, there may be wavelengths where the transmittance of both the first wavelength selection section 121 and the second wavelength selection section 123 is not 0%.

[0107] The first light receiving element 122 receives the light transmitted by the first wavelength selection unit 121 and outputs a first signal according to the first amount of received light, which is the amount of received light. 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 is preferably configured not to 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. This increases the light receiving angle of the first light receiving element 122 (for example, 120 to 180 degrees), making it possible to receive light from multiple directions. Alternatively, a lens or a mirror may be combined to widen the light receiving angle of the first light receiving element 122.

[0108] As shown in FIG. 4(b), 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 among 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 is at its peak. The 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 dashed line in FIG. 6, the second wavelength selection unit 123 blocks light in a wavelength region including the specific wavelength λout, here, the wavelength region from wavelength λ2a to wavelength λ2b, and transmits light in the other wavelength regions. It is desirable that the wavelength region from wavelength λ2a to wavelength λ2b does not include the specific wavelength λout, and preferably includes a wide wavelength region other than the specific wavelength λout. The characteristics of the second wavelength selection section 123 are determined from the viewpoint of transmitting only light having a wavelength different from that of the pulsed light Lout from the speed measurement device 30 as much as possible.

[0109] The second light receiving element 124 receives the light that has passed through the second wavelength selection unit 123, and outputs a second signal according to the second amount of received light, which is the amount of received light. The second light receiving element 124 is, for example, a photodiode, but may be a phototransistor or other light receiving element. It is preferable that the second light receiving element 124 is a light receiving element with the same characteristics as the first light receiving element 122, for example, the same product (for example, 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. The second light receiving element 124 is a so-called lensless type sensor that is not provided with a lens, similar to the first light receiving element 122.

[0110] 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 timing of light incidence between the first light receiving element 122 and the second light receiving element 124. Even in this case, the presence of the partition wall 103 reduces the 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.

[0111] The light receiving unit 12 is preferably shielded using a conductive material. This shield is made of, for example, a metal case. This reduces the effects of electromagnetic noise on the electronic components inside the housing 100.

[0112] The first window 101, the second window 102, and the light receiving unit 12 may be provided so as to face diagonally forward (for example, forward left) with respect to the traveling direction of the vehicle 40 when the display unit 13 of the electronic device 10 faces the driver's seat of the vehicle 40. This may make it easier for the light receiving unit 12 to receive the pulsed light Lout from the speed measurement device 30.

[0113] 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 central processing unit (CPU), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other arithmetic processing circuits. The memory includes, for example, a random access memory (RAM) or other volatile memory. The arithmetic processing circuit performs various controls by temporarily reading data into the memory and performing arithmetic processing.

[0114] 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. The first wavelength selection unit 121, for example, selects a wavelength region from wavelength λ1a to wavelength λ1b from the incident light and transmits the light as light Lin1. The first light receiving element 122 receives the light Lin1 and outputs a first signal Sig1 according to the first amount of received light. The first amount of received light may indicate the amount of light of a specific wavelength selected and received by the light receiving unit 12. The first signal Sig1 indicates the amount of received light of the light Lin1. The second wavelength selection unit 123 selects a wavelength region different from the wavelength region from wavelength λ2a to wavelength λ2b and transmits the light as light Lin2. The second light receiving element 124 receives the light Lin2 and outputs a second signal Sig2 according to the second amount of received light. The second amount of received light may indicate an amount of light of a wavelength different from the specific wavelength selected and received by the light receiving unit 12. The second signal Sig2 indicates the amount of received light Lin2. The interface 125 processes the first signal Sig1 and the second signal Sig2 and outputs the processed signals to the control unit 11. The interface 125 converts the first signal Sig1 and the second signal Sig2 into a digital format and outputs them, for example.

[0115] 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 receiver 15 includes an antenna and a receiving circuit, and receives microwaves. The GPS (Global Positioning System) receiver 16 includes an antenna and a receiving circuit, and receives signals from GPS satellites. The GPS receiver 16 processes the received signal and outputs 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 an external device. The communication unit 17 performs wireless communication, for example, via Wi-Fi (registered trademark), Bluetooth (registered trademark), or another type.

[0116] The storage unit 18 stores data. For example, the storage unit 18 stores programs for the control unit 11 to perform various controls. The control unit 11 reads the programs from the storage unit 18 into a memory and executes them. The storage unit 18 also stores map data showing a map, data showing the types and locations of various facilities, data for notifying the presence of a notification object, data for realizing a route guidance function, and the like. Objects to be notified include, for example, the location of an accident caused by drowsy driving, speed measuring devices (radar type, loop coil type, H system, LH system, photocell type, mobile type, etc.), speed limit change points, enforcement areas, checkpoints, parking monitoring areas, N systems, traffic monitoring systems, intersection monitoring points, traffic light ignoring prevention systems, police stations, accident-prone areas, areas with high incidence of vehicle theft, sharp / continuous curves (expressways), branching / merging points (expressways), advance ETC lane guidance (expressways), service areas (expressways), parking areas (expressways), highway oases (expressways), smart interchanges (expressways), gas stations inside PAs / SAs (expressways), tunnels (expressways), highway radio receiving areas (expressways), prefectural border announcements, roadside stations, and view point parking lots. The storage unit 18 stores the type information of these notification objects, position information indicating their positions, image data (for example, schematic diagrams or photographs) to be displayed on the display unit 13, and audio data in association with each other.

[0117] The storage unit 18 may include a storage medium that permanently stores data. The storage unit 18 may include, for example, an optical recording medium, a magnetic recording medium, a semiconductor recording medium, or other recording media.

[0118] The operation unit 19 accepts operations by the user. The operation unit 19 includes, for example, a touch sensor, a volume adjustment button, and a work button. The touch sensor is provided on the surface of the display unit 13 and detects a position touched by the user. The volume operation 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.

[0119] 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 detects geomagnetism to detect which direction north is relative to the direction of travel. The acceleration sensor detects the acceleration of the vehicle in the forward / backward, left / right, and up / down directions. The illuminance sensor detects the illuminance indicating the brightness inside the vehicle cabin.

[0120] The mounting unit 21 is a mounting unit in which an external storage medium is mounted, and the external storage medium is, for example, a memory card. In this case, the mounting unit 21 is a memory card slot. Data stored in the memory unit 18 may be imported via the external storage medium. This data includes update information on information (position information such as longitude and latitude, type information, etc.) of a new target to be notified.

[0121] The power supply unit 22 supplies the power supplied from the power source 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 cigarette plug cord, and is connected to a cigarette lighter socket of a vehicle via the cigarette plug cord to receive power. The power switch is a switch for turning the power of the electronic device 10 on and off.

[0122] The light emitting unit 23 emits light in various colors and includes, for example, a light emitting diode.

[0123] The cable terminal unit 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 an OBD-II connector mounted on a vehicle. The OBD-II connector is also called a fault diagnosis connector, and is connected to an ECU (Engine Control Unit) of the vehicle to output various vehicle information.

[0124] In addition to the above, the electronic device 10 may also have functions provided in a well-known radar detector.

[0125] <1-2. Operation of the First Embodiment> Next, the operation of this embodiment will be described. <1-2-1. Optical Notification> Fig. 8 is a flowchart showing the operation of the control unit 11 of the electronic device 10. Fig. 8 shows the operation when detecting the speed measuring device 30 by an optical method. When the electronic device 10 starts operating, the control unit 11 executes the process described below. There is no particular limit to the timing at which the operation of the electronic device 10 starts, but it is preferable that the timing be, for example, when the power of the electronic device 10 is turned on or when execution of a route guidance function is started.

[0126] First, the control unit 11 starts displaying a map screen on the display unit 13 (step S1). The map screen is a screen showing the vehicle's position on a map. The map displayed on the display unit 13 is specified based on map data and position information from the GPS receiver unit 16. The vehicle's position is specified based on position information from the GPS receiver unit 16. FIG. 9 is a diagram showing an example of a map screen. In the map screen shown in FIG. 9, an icon I1 showing the vehicle's position is arranged on a map M. The address of the current position, the distance to a predetermined object to be notified (here, "1960m to H system"), the speed limit, and photos of the surroundings of the speed control point are displayed on the map screen. FIG. 10 is a diagram showing another example of a map screen. In the map screen shown in FIG. 10, an icon I1 showing the vehicle's position is also arranged on a map M. Hereinafter, an example of control when the map screen shown in FIG. 10 is displayed will be described. The icons may be replaced with characters, symbols, figures, or other objects.

[0127] 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 amount of received light corresponding to the first signal Sig1 and the second amount of received light corresponding to the second signal Sig2 (step S3). Next, the control unit 11 judges whether the calculated difference is equal to or greater than a threshold (step S4). If the difference is less than the threshold, the control unit 11 judges "NO" in step S4 and returns to the process of step S2. In this case, the control unit 11 determines that the speed measurement device 30 has not been detected and does not notify the presence of the speed measurement device 30.

[0128] 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 control for notifying the user of the presence of the speed measurement device 30. The notification control can be said to be control for issuing an alarm to make the user aware of what the speed measurement device is doing. The notification control here is control for notifying the user of the presence of the speed measurement device 30 by a first method. The notification control includes, for example, control for displaying a notification screen on the display unit 13.

[0129] FIG. 11 is a diagram showing an example of a notification screen. The notification screen shown in FIG. 11 is a screen in which a window W1 is arranged on the map screen described above. In the window W1, an icon M1 indicating the presence of the speed measurement device 30 and a message indicating the presence of the speed measurement device 30, such as "You are approaching a speed control point. Please be careful," are arranged. The icon M1 is an icon that allows the user to recognize that the speed measurement device 30 is compatible with the optical method. The notification control may include control to output a notification sound from the speaker 14. In this case, the control unit 11 may output a sound from the speaker 14 saying, "You are approaching a speed control point using a laser. Please be careful." The notification control may include other controls, such as control to cause the light emitting unit 23 to emit light. The notification control may be control that notifies the user of the presence of the speed measurement device 30 in a manner that allows the user to recognize it.

[0130] Next, the control unit 11 judges whether to end the process of FIG. 8 (step S6). The trigger for ending the process is not particularly limited, but may be, for example, the power supply of the electronic device 10 being turned off by the operation of the operation unit 19 or the route guidance function being stopped. If the result of the judgment in step S6 is "NO", the control unit 11 returns to the process of step S2 and repeats the above process (step S4). For example, if the difference changes from a threshold value or more to a value less than the threshold value, the control unit 11 judges "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. 12. This is because it means that a speed control point has been passed. If the result of the judgment in step S6 is "YES", the control unit 11 ends the process of FIG. 8 (step S7).

[0131] Here, the reason why the speed measuring device 30 can be detected by the above-mentioned method will be explained. As explained in FIG. 6, the first wavelength selection unit 121 selects and transmits light of a specific wavelength λout (more specifically, a wavelength region from wavelength λ1a to wavelength λ1b) in which the pulsed light Lout has energy. Therefore, the first signal Sig1 should show a large amount of received light during the period in which the pulsed light Lout is received, and show a small amount of received light during the other period. However, the light receiving unit 12 may receive not only the pulsed light Lout that is the object of reception, but also disturbance light. This disturbance light may be mistaken for pulsed light. An example of disturbance light is light that arrives when sunlight is periodically blocked by the branches and leaves of a tree swayed by the wind. Another example of disturbance light is light from a traffic light or advertisement that periodically turns on and off, and light from a rotating warning light that rotates at a constant speed. The light received by the light receiving unit also changes due to vibration of the light receiving unit. For example, when the vehicle 40 travels on a place where periodic vibration occurs, such as on a pier, the orientation of the light receiving unit 12 (for example, the first light receiving element 122) may change, and light such as sunlight may be received as light that is repeatedly turned on and off at a predetermined cycle. Even in such a case, the first signal Sig1 indicates a relatively large amount of received light.

[0132] In contrast, the second wavelength selection unit 123 blocks light of a specific wavelength λout (in this embodiment, a wavelength range from wavelength λ2a to wavelength λ2b) in which the pulsed light Lout has energy, and transmits light of the other wavelength ranges. Therefore, the amount of light received by the second signal Sig2 is 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 range in which energy is distributed. Therefore, even if the light receiving unit 12 receives disturbance light that is periodically turned on and off, it is considered that the amount of light received by the second light receiving element 124 is large. Therefore, when the amount of light received by the first signal Sig1 is large and the amount of light received by the second signal Sig2 is small, that is, when the difference in the amount of light received is equal to or greater than a threshold value, it can be estimated that the pulsed light Lout has been received. On the other hand, when the amount of received light of the first signal Sig1 is large and the amount of received light of the second signal Sig2 is also large, that is, when the difference between the amounts of received light is less than the threshold, it can be estimated that the pulsed light Lout is unlikely to have been received. Therefore, according to the electronic device 10, by receiving light using the first light receiving element 122 and the second light receiving element 124, it is expected that the detection accuracy of the speed measurement device 30 can be improved.

[0133] <1-2-2. Radar Notification> It is preferable that the control unit 11 further executes the process of FIG. 13 in parallel with the process of FIG. 8 based on the microwave received by the microwave receiving unit 15.

[0134] First, the control unit 11 acquires a microwave reception signal from the microwave receiving unit 15 (step S11). Next, the control unit 11 performs a determination process to determine whether or not a radar-type speed measurement device is present based on the microwave reception signal (step S12). In step S12, the control unit 11 may determine whether or not a speed control point is present 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 a description thereof will be omitted.

[0135] Next, the control unit 11 judges whether or not a speed measurement device has been detected based on the result of the judgment process (step S13). If the judgment in step S13 is "YES", the control unit 11 performs notification control (step S14). The notification control is control for notifying the user of the presence of a speed measurement device by a third method. The notification control includes, for example, control for displaying a notification screen on the display unit 13. FIG. 14 is a diagram showing an example of a notification screen. The notification screen shown in FIG. 14 is a screen in which a window W2 is superimposed on the above-mentioned map screen. In the window W2, an icon M2 indicating the presence of the speed measurement device 30 and a message indicating the presence of the speed measurement device, such as "Approaching a 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 method. In other words, the icon M2 is different from the icon M1. The notification control may include control for outputting a notification sound from the speaker 14. In this case, the control unit 11 may output a voice from the speaker 14 saying, "You are approaching a radar speed control point. Please be careful." The notification control may be other control than those mentioned above, and may include, for example, control to emit light from the light emitting unit 23. Here too, the notification control may be control that notifies the user of the presence of the speed measurement device in a manner that allows the user to recognize the presence of the speed measurement device.

[0136] <1-3. Modification of the first embodiment> The control unit 11 may further perform the following controls. <1-3-1. Notification according to the number of pulses> When the speed measurement device 30 emits pulsed light, referring to the number of pulses is also useful for detecting the speed measurement 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. 15(a) shows the case where the distance between the electronic device 10 and the speed measurement device 30 is relatively large, and FIG. 15(b) shows the case where the distance between the electronic device 10 and the speed measurement device 30 is relatively small. As shown in FIG. 15(a), when the distance between the speed measurement 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 pulsed light traveling in the direction that propagates only through the position close to the speed measurement device 30 on the road (for example, directly beside the speed measurement device 30) is not received. Therefore, the light reception period Rx1 of the pulsed light Lout becomes relatively shorter than the non-light reception period Rx2. As shown in FIG. 15(b), when the distance between the speed measurement 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 pulsed light traveling in the direction that propagates only through the position close to the speed measurement device 30 on the road can also be received. Therefore, the light reception period Rx1 of the pulsed light Lout becomes relatively longer than the non-light reception period Rx2. Also, it is considered that the number of pulses decreases immediately after the vehicle 40 passes the position of the speed measurement device 30. In practice, the relationship Rx1 << Rx2 may be satisfied.

[0137] Therefore, the control unit 11 may perform notification control according to the number of pulses. For example, the control unit 11 may change the notification level according to 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 in this embodiment, it may be referred to as an alarm level. 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 increases the notification level during a period in which the number of pulses is equal to or greater than a threshold value, or during a period in which the number of pulses is increasing, since the vehicle is approaching the speed measuring device 30. The control unit 11 decreases the notification level during a period in which the number of pulses is less than a threshold value, or during a period in which the number of pulse widths is decreasing, since the vehicle is far from the speed measuring device 30 or is moving away. 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 to be output from the speaker 14, or change the light emission color of the light emitting unit 23, according to the notification level.

[0138] Furthermore, the control unit 11 may estimate a distance from the number of pulse widths and notify the user 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 a map. In this example, an 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.

[0139] However, as shown in FIG. 17, when there is another vehicle ahead of the vehicle 40, the pulsed light Lout may be blocked in whole or in part by the vehicle C traveling ahead. In this case, even if the number of pulses is referred to, the positional relationship may not be accurately specified. Therefore, the control unit 11 detects the presence or absence of another vehicle C ahead of the vehicle 40 within a predetermined range from the vehicle 40. When there is no other vehicle C, the control unit 11 may perform notification control according to the number of pulses, and when there is the vehicle C, the control unit 11 may stop the notification control. Stopping the notification control according to the number of pulses may mean not changing the content of the control related to the notification according to the number of pulses. In addition, the electronic device 10 may stop the notification control according to the number of pulses when the inter-vehicle distance is less than a threshold value, and may perform this notification control when the inter-vehicle distance is equal to or greater than the threshold value. There is no particular limit to the method of detecting the vehicle C, but there is a method using an in-vehicle camera 50. The in-vehicle camera 50 is, for example, a camera used in a drive recorder, and here, captures an image ahead of the vehicle 40.

[0140] 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 a captured image from the in-vehicle camera 50 via the communication unit 17 (step S21). Next, the control unit 11 analyzes the captured image (step S22). Any algorithm may be used for analyzing the captured image, and a pattern matching method may be used, for example. Then, the control unit 11 judges whether or not there is a vehicle ahead (step S23). If the result of the judgment in step S23 is "NO", the control unit 11 judges that notification control according to the number of pulses is to be performed (step S24). In this case, the control unit 11 performs a process such as rewriting the flag to a value indicating that control according to the number of pulses is to be performed. If the result of the judgment in step S23 is "YES", the control unit 11 judges that notification control according to the number of pulses is to be stopped (step S25). In this case, the control unit 11 performs a process such as rewriting a predetermined flag to a value indicating that control according to the number of pulses is not to be performed. Here, a vehicle ahead of the vehicle 40 is detected, but it may be behind the vehicle 40. The electronic device 10 may include an in-vehicle camera 50. As a result, the possibility that the positional relationship between the light receiving unit 12 and the speed measuring device 30 will be misidentified due to the presence of another vehicle C is reduced.

[0141] <1-3-2. Control according to pulse width or pulse interval> When the speed measuring device 30 emits pulsed light, referring to the pulse width or pulse interval is also useful in detecting the speed measuring device 30. The speed measuring device 30 emits pulsed light of a specific wavelength with a predetermined duty ratio. In addition, 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 the speed measuring device 30 exists based on a 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 otherwise. The control unit 11 specifies the pulse width or 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 notifications that mistakenly identify ambient light as light from a light emitting device.

[0142] <1-3-3. Control according to the intensity of the pulsed light> Referencing the intensity of the pulsed light of the received light is also useful in detecting the speed measurement device 30. The closer the vehicle 40 is to the speed measurement device 30, the greater the intensity of the pulsed light becomes, and the further away the vehicle 40 is, the smaller the distance becomes. 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 notify by raising the notification level when the intensity of the pulsed light is increasing, and by lowering the notification level when the intensity of the pulsed light is decreasing. In addition, the control unit 11 may determine that the speed measurement device 30 does not exist when the amount of received pulsed light is less than a threshold value. 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 measurement device 30.

[0143] The disturbance light may be light used in a sensor for detecting other vehicles, such as a vehicle distance sensor. Such light may have the same frequency as the pulsed light Lout. Even in such a case, it is expected that the possibility of false alarms will be reduced by referring to the pulse interval or intensity of the light received by the electronic device 10.

[0144] <1-3-4. Notification of imaging availability> After performing the notification control, the control unit 11 may perform control to notify that an image has been captured or that an image has not been captured, depending on whether a predetermined light has been detected. When an image has been captured by the imaging unit 32, the strobe 33 emits light. Therefore, after performing the notification control, the control unit 11 may further notify that an image has been captured if it detects the light of the strobe 33. Alternatively, after performing the notification control, the control unit 11 may notify that an image has not been captured if it does not detect the light of the strobe 33. This allows the user to know whether an image of the vehicle 40 has been captured. Incidentally, the light from the strobe 33 may be received by the light receiving unit 12, or a separate light receiving unit may be used.

[0145] [2. Second embodiment] In this embodiment, even when the electronic device 10 does not receive pulsed light and microwaves, it has a function of notifying the presence of the speed measuring device 30. The electronic device of this embodiment may have some or all of the functions of the first embodiment described above, or may not have them.

[0146] <2-1. Configuration of the second embodiment> FIG. 19 is a diagram for explaining an outline of the system of this embodiment. As shown in FIG. 19, there are various types of roads. For example, on a road Ar1 called a green belt, which is also used as a school route, it is particularly important that the vehicle 40 obeys the speed limit, and it is considered that the possibility of installing a speed measurement device 30 is higher than on a road Ar2 of another type. Therefore, the control unit 11 may notify the presence of the speed measurement device 30 when the electronic device 10 is located on a predetermined type of road.

[0147] <2-2. Operation of the Second Embodiment> 20 is a flowchart showing the operation of the control unit 11 of the electronic device 10. The control unit 11 acquires location information from the GPS receiving unit 16 (step S31). Next, the control unit 11 judges whether the current location indicated by the location information is within a predetermined area (step S32). Here, the control unit 11 judges whether the vehicle 40 is on a green belt based on the current location and the data stored in the memory unit 18. If the control unit 11 judges "YES" in step S32, it performs notification control (step S33). The notification control includes, for example, control to display a notification screen on the display unit 13.

[0148] FIG. 21 is a diagram showing an example of a notification screen. The notification screen shown in FIG. 21 is a screen in which a window W3 is arranged on top of the map screen described above. In the window W3, an icon M3 indicating the presence of a speed measurement device 30 and a message indicating the presence of a speed measurement device, such as "You are in a speed control warning area," are arranged. The icon M3 is an icon that allows the user to recognize that a speed control point is being carried out based on location information. That is, for example, the icon M3 is different from the icons M1 and M2. The notification control may include control to output a notification sound from the speaker 14. In this case, the control unit 11 may output a sound from the speaker 14 saying "You are in a speed control warning area." The notification control may include other controls, such as control to cause the light-emitting unit 23 to emit light. The predetermined area is not limited to a green belt, and may be a one-way road or other types of roads.

[0149] In this way, the presence of the light emitting device can be notified based on the position information, so that the presence can be notified even without receiving pulsed light from the speed measuring device 30.

[0150] [3. Third embodiment] In this embodiment, the electronic device 10 has a plurality of light receiving units that receive pulsed light.

[0151] Fig. 22 is a block diagram showing the electrical configuration of the electronic device 10. In this example, the electronic device 10 includes three light receiving units 12A, 12B, and 12C. The configuration of each of the light receiving units 12A, 12B, and 12C may be the same as that of the light receiving unit 12, except for the characteristics of the wavelength selection unit. Note that Fig. 22 omits the illustration of the display unit 13 to the cable terminal unit 24 described in Fig. 6.

[0152] FIG. 23 is a diagram showing the characteristics of the first wavelength selection section 121 and the second wavelength selection section 123 of the light receiving sections 12A, 12B, and 12C of this embodiment. FIG. 23(a) corresponds to the light receiving section 12A, FIG. 23(b) corresponds to the light receiving section 12B, and FIG. 23(c) corresponds to the light receiving section 12C. As shown in FIG. 23(a) to (c), the light receiving sections 12A, 12B, and 12C each receive a different wavelength of pulsed light. As shown by the solid line in FIG. 23(a), the first wavelength selection section 121 of the light receiving section 12A transmits light in a wavelength region including a specific wavelength λout1, here, a wavelength region from wavelength λ11a to wavelength λ11b, and blocks light in a wavelength region other than this. As shown by the dashed line in Fig. 23(a), the second wavelength selection unit 123 blocks light in a wavelength region including the specific wavelength λout1, here from wavelength λ21a to wavelength λ21b, and transmits light in a different wavelength region. As shown by the solid line in Fig. 23(b), the first wavelength selection unit 121 of the light receiving unit 12B transmits light in a wavelength region including the specific wavelength λout2, here from wavelength λ12a to wavelength λ12b, and blocks light in a different wavelength region. As shown by the dashed line in Fig. 23(b), the second wavelength selection unit 123 blocks light in a wavelength region including the specific wavelength λout2, here from wavelength λ22a to wavelength λ22b, and transmits light in a different wavelength region. As shown by the 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 the specific wavelength λout3, here the wavelength region from wavelength λ13a to wavelength λ13b, and blocks light in a wavelength region other than this. As shown by the dashed line in Fig. 23(c), the second wavelength selection unit 123 blocks light in a wavelength region including the specific wavelength λout3, here the wavelength region from wavelength λ23a to wavelength λ23b, and transmits light in a wavelength region other than this. 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, etc.

[0153] When the control unit 11 detects the speed measurement device 30 based on the first signal Sig1 and the second signal Sig2 from any of the light receiving units 12A, 12B, 12C, it notifies the presence of the speed measurement device 30. According to this embodiment, even if there are multiple speed measurement devices 30 with different wavelengths of light emitted by the electronic device 10, or even if the wavelength of light emitted by the speed measurement device 30 is changed, it is possible to notify the presence of the speed measurement device 30.

[0154] 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 unit 12A is provided at the left front portion, the light receiving unit 12B is provided at the center front portion, and the light receiving unit 12C is provided at the right front portion. This allows the direction of arrival of the laser to be estimated based on the timing of receiving the laser at the light receiving units 12A, 12B, and 12C. For example, if the laser arrives from the left front, the timing of receiving the laser at the light receiving unit 12A will be relatively early, and if the laser arrives from the right front, the timing of receiving the laser at the light receiving unit 12C will be relatively early. Furthermore, the control unit 11 may notify the user of the direction from which the pulsed light arrives.

[0155] Moreover, the speed measurement unit 31 emits pulsed light to a mirror rotating at a constant speed, and emits pulsed light Lout reflected by the mirror. Therefore, the timing at which the pulsed light Lout is received by each of the light receiving units 12A, 12B, 12C varies depending on, for example, the rotation speed of the mirror, the positions of the light receiving units 12A, 12B, 12C, and the distance between the light receiving units 12A, 12B, 12C and the speed measurement device 30. Therefore, the control unit 11 may detect the speed measurement device 30 based on the timing at which the pulsed light Lout is received by the light receiving units 12A, 12B, 12C.

[0156] The light receiving units 12A, 12B, and 12C may each receive light in a different direction. For example, the orientation of the light receiving elements of the light receiving units 12A, 12B, and 12C may differ by 20 degrees each. This may prevent a decrease in detection accuracy due to the installation position of the speed measurement device 30. In this embodiment, the number of light receiving units may be two or four or more.

[0157] [4. Configuration of the light receiving unit 12] Next, a configuration example of the light receiving section 12 applicable to each of the above-mentioned embodiments will be described. FIG. 25 is a diagram showing an example of the circuit 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 a 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 negative input terminal of the differential amplifier AMP. The output control circuit A1 is, for example, an amplifier that adjusts the level of a signal. 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 a 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 terminal of the output control circuit A2 is commonly connected to the anode of the photodiode PD2 and one terminal of the resistor R2. The output terminal of the output control circuit A2 is connected to the positive input terminal of the differential amplifier AMP. The output control circuit A2 is, for example, an amplifier that adjusts the level of a signal. A signal corresponding to the difference between the amounts of light received by the photodiodes PD1 and PD2 is output from the output terminal of the differential amplifier AMP. The control unit 11 detects the speed measuring device 30 based on this difference. It is preferable that the control unit 11 detects the speed measuring device 30 based on the signal after it has been amplified by the differential amplifier AMP.

[0158] [5. External configuration of electronic device 10] FIG. 26 is a six-sided view showing an example of the external configuration of the electronic device 10. In this example, the display unit 13, the light emitting unit 23, and the illuminance sensor 201 of the sensor unit 20 are provided on the front of the housing of the electronic device 10. A speaker 14 is provided to output sound from the upper end face of the housing 100. A mounting unit 21 (i.e., an SD card slot) for mounting an SD card (registered trademark) is provided on the right end face of the housing 100. A light receiving unit 12 is provided on the upper right part of the back of the housing 100. In addition, a power switch 221 and a DC jack 222 of the power supply unit 22 are provided on the lower left part of the back of the housing 100. An area 104 is an area in which the model name and serial number are written.

[0159] 6. Other embodiments of notification control performed by electronic device 10 Next, a description will be given of another embodiment of the information notification control performed by the electronic device 10. In the notification control described below, the notification controls described above may be appropriately combined. <6-1. Notification regarding pulsed light Lout (fixed type)> The control unit 11 performs a first notification control to notify the presence of the fixed speed measurement 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 measurement device 30. As shown in FIG. 27, this notification screen is a screen in which an icon I11 indicating the position of the vehicle 40 and information display areas TA1, TA2, TB1, and TB2 are arranged on a map M11. The information display areas TA1 and TA2 are displayed when the pulsed light Lout is received. The information display area TA1 is arranged in the lower right part of the display screen. The information display area TA1 displays the attributes of the speed measurement device 30 and the state of the vehicle 40. The information display area TA1 displays, as the attributes of the speed measurement device 30, a character string TA11 that means that the speed measurement device 30 corresponds to an optical method, and an icon TA12 that imitates the speed measurement device 30. The information display area TA1 further displays, as the status of the vehicle 40, a character string TA13 (here, 60 km / h) indicating the current speed of the vehicle 40. In this way, the electronic device 10 can allow the user to recognize at least one of the information regarding the attribute of the speed measurement device 30 and the status of the vehicle 40. The attribute of the speed measurement device may be other attributes such as an estimated distance from the vehicle 40. If the notification level can be specified, the information display area TA1 may display the notification level. The status of the vehicle 40 may indicate other running conditions such as engine speed in addition to the speed.

[0160] The information display area TA2 is disposed in the lower left part 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 gives the viewer the impression that the image is moving by displaying a plurality of still images (frames) while switching them in sequence at a predetermined time interval. In this way, the electronic device 10 can easily make the user recognize the presence of the speed measuring device 30 that the vehicle 40 is approaching. The information display area TB1 is disposed in the upper right part of the display screen and displays the address of the current position. The information display area TB2 is disposed in the upper left part of the display screen and displays the current time. The control unit 11 may be configured to notify the user by a predetermined sound in addition to the display.

[0161] 28 and 29 are diagrams showing an example of an animation image displayed in the information display area TA2. In FIG. 28 and FIG. 29, the images of each frame are displayed in the order shown by the arrows. When the image of the rightmost frame in the bottom row of FIG. 28 is displayed, the image of the leftmost frame in the top row of FIG. 29 is displayed next. When the image of the rightmost frame in the bottom row of FIG. 29 is displayed, the image returns to the image of the leftmost frame in the top row of FIG. 28. As shown in FIG. 28, the animation image includes an image TA21 showing the side of the road, an image TA22 imitating a speed measuring device, and an image TA23 visually showing an area irradiated with pulsed light emitted from the speed measuring device. As shown in FIG. 28 and FIG. 29, in the animation image, an image (see the frame surrounded by a dashed line) showing the speed measuring device approaching over time and, after approaching the closest, viewed from a position far away from the speed measuring device is displayed. Then, in the animation image, the speed measuring device approaching over time is displayed again. During the period in which the pulsed light Lout is received, the control unit 11 displays an animation in which the images of each frame are displayed in the above-mentioned order. When the control unit 11 no longer detects the presence of the optical speed measurement device 30, it stops the notification immediately or after a predetermined time. This predetermined time may be, for example, three seconds. The first frame in the animation image may be an image showing the speed measurement device as seen from the position farthest away from the speed measurement device (see the frame surrounded by the dashed line).

[0162] <6-2. Notification regarding pulsed light Lout (mobile)> The control unit 11 performs a second notification control to notify the presence of the mobile speed measurement device 30. The second notification control is 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 measurement device 30. As shown in FIG. 30, this notification screen is a screen in which an icon I11 indicating the position of the vehicle 40 and information display areas TA1, TA3, TB1, and TB2 are arranged on a map M11 in a superimposed manner. The information display areas TA1, TB1, and TB2 are the same as the information display areas TA1, TB1, and TB2 described in FIG. 27. The information display area TA3 is displayed when the pulsed light Lout is received. The information display area TA3 is arranged in the lower left part of the display screen. The information display area TA1 displays the attributes of the speed measurement device 30 and the state of the vehicle 40. The information display area TA3 displays an animation image including an image imitating the speed measurement device 30. The control unit 11 may notify the user by a predetermined sound in addition to the display. Furthermore, an icon indicating the position of the speed measurement device 30 may be placed on the map M11.

[0163] 31 and 32 are diagrams showing an example of an animation image displayed in the information display area TA3. In FIG. 31 and FIG. 32, the images of each frame are displayed in the order indicated by the arrows. When the image of the rightmost frame in the bottom row of FIG. 31 is displayed, the image of the leftmost frame in the top row of FIG. 32 is displayed next. When the image of the rightmost frame in the bottom row of FIG. 31 is displayed, the image of the leftmost frame in the top row of FIG. 32 is displayed again. As shown in FIG. 31, the animation image is an image in which the image area is divided into left and right using diagonal lines, and the left area has an image TA31 showing the periphery of the road, an image TA32 simulating a speed measuring device, and a target image TA33 surrounding the image TA32 as a target, and the right area has an image T34 showing the periphery of the road, an image TA35 simulating a speed measuring device, and a target image TA36 surrounding the image TA35 as a target. As shown in FIG. 31 and FIG. 32, in the animation image, as the speed measurement device is approached over time, the target images TA33 and TA36 repeatedly expand and contract, and their sizes change periodically. After the speed measurement device is closest to the target, an image showing the speed measurement device as seen from a position far away from the target is displayed. Then, the speed measurement device is again approached over time. During the period in 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 no longer detects the presence of the optical speed measurement 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 the speed measurement device as seen from a position far away from the speed measurement device.

[0164] <6-3. Radar System Notification> The control unit 11 performs a third notification control to notify the presence of a radar-type speed measurement device in response to receiving the microwave radio waves. FIG. 33 is a diagram showing an example of a notification screen when the electronic device 10 receives light from a radar-type speed measurement device. As shown in FIG. 33, this notification screen is a screen in which an icon I11 indicating the position of the vehicle 40, an icon I12 indicating the installation position of the radar-type speed measurement device, and information display areas TA4, TA5, TB1, and TB2 are arranged on a map M11 in a superimposed manner. The information display areas TB1 and TB2 are the same as the information display areas TB1 and TB2 described in FIG. 27. The information display area TA4 displays the attributes of the speed measurement device and the state of the vehicle 40. The information display area TA4 displays, as attributes of the speed measurement device, a character string TA41 indicating that the device is radar-type, "radar", which means that the device is compatible with the radar system, "Lv.5", which indicates a notification level according to the strength of the radio waves from the speed measurement device, and an icon TA42 indicating that the device is a radar-type speed measurement device. The information display area TA4 displays a character string TA43 (here, 88km / h) indicating the current speed of the vehicle 40 as the status of the vehicle 40. The information display area TA5 is disposed in the lower left corner 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 notify the user by a predetermined sound in addition to the display.

[0165] 34 and 35 are diagrams showing an example of an animation image displayed in the information display area T5 of FIG. 33. In FIG. 34 and FIG. 35, the images of each frame are displayed in the order indicated by the arrows. When the image of the rightmost frame in the bottom row of FIG. 34 is displayed, the image of the leftmost frame in the top row of FIG. 35 is displayed next. When the image of the rightmost frame in the bottom row of FIG. 35 is displayed, the image returns to the image of the leftmost frame in the top row of FIG. 34 and is displayed. As shown in FIG. 34 and FIG. 35, the animation 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 microwaves emitted from the speed measuring device. As shown in FIG. 34 and FIG. 35, the animation image is an image in which the image TA53 approaches the speed measuring device over time, and the image TA53 repeatedly expands and contracts, periodically changing in size, and approaches the viewer. In the animation image, after the vehicle approaches the speed measurement device closest to the vehicle, an image showing the speed measurement device as seen from a position far away from the speed measurement device (see the frame surrounded by a dashed line) is displayed. Then, in the animation image, the vehicle again approaches the speed measurement device over time. During the period when the radar speed measurement device is detected, an animation is displayed in which the images of each frame are displayed in the above-mentioned order. When the control unit 11 no longer detects the presence of the radar speed measurement device, the control unit 11 stops the notification immediately or after a predetermined time. This predetermined time is preferably 3 seconds. In addition, the period from when the presence of the speed measurement device is no longer detected to when the notification is stopped should be the same in the optical system and the radar system, but may be different. The first frame in the animation image may be an image showing the speed measurement device as seen from a position far away from the speed measurement device (see the frame surrounded by a dashed line).

[0166] FIG. 36 is a diagram showing the relationship between the received microwave (shown as "radar wave" in FIG. 36) and the notification method. The control unit 11 identifies the received radar wave and changes the notification control depending on the result of the identification. As shown in FIG. 36(a), the radar wave includes stealth waves that emit radio waves only at the moment when a predetermined stealth enforcement device measures it, normal radar waves, new radar waves corresponding to K band and X band, and cancellation notification. The cancellation notification is a function that automatically registers GPS location information when passing through a place that emits radio waves and causes a false alarm, such as an automatic door, and cancels the notification by the radar method when radio waves are received the second or subsequent times the electronic device passes through. As shown in FIG. 36(a), the control unit 11 changes the light emission color of the light emitting unit 23 depending on the notification level. Also, as shown in FIG. 36(b), the control unit 11 changes the notification sound (e.g., electronic sound) emitted from the speaker 14 depending on the distance between the electronic device 10 and the source of the microwave.

[0167] <6-4. Notification regarding other types of speed measuring devices> In addition, when a speed measurement device is detected, the control unit 11 displays an information display area corresponding to the detection method in the lower right corner of the notification screen. As shown in Fig. 37(a), in the case of an LH system, an information display area TA6 is displayed. As shown in Fig. 37(b), in the case of a loop coil, an information display area TA7 is displayed. The control unit 11 may display animation images for other speed measurement methods as well, but may not display them for some or all of the methods.

[0168] <6-5. Collision warning notification> As shown in FIG. 39(a), the electronic device 10 cooperates with the sensor device 90 to provide a collision warning notification. The collision warning is an example of a notification according to the positional relationship between the vehicle 40 and another vehicle, and is a function of providing a warning that the vehicle may collide with another vehicle. The sensor device 90 has a function of a vehicle-to-vehicle sensor that detects the distance to another vehicle ahead. The vehicle-to-vehicle sensor detects the distance between the vehicles by an infrared method and outputs the detected distance between the vehicles to the electronic device 10. The sensor device 90 and the electronic device 10 are connected via a wired or wireless communication cable. The control unit 11 performs a fourth notification control according to the positional relationship between the vehicle 40 and another vehicle. Here, the positional relationship is specified based on the distance between the vehicles. The fourth notification control is a control for providing a collision warning notification.

[0169] FIG. 38 is a diagram showing an example of a notification screen related to a collision warning. FIG. 38(a) is a screen related to a collision warning, which issues a warning when the vehicle approaches a stopped preceding vehicle. In this screen, an icon I11 indicating the position of the vehicle 40, an information display area TC11, and an information display area TC12 indicating the current speed are displayed on a map M11. FIG. 38(b) is a screen related to a departure warning, which issues a warning when the preceding vehicle starts and the vehicle 40 is stopped. In this screen. 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 on a map M11. FIG. 38(c) is a screen related to an over-close warning, which issues a warning when the distance between the vehicle 40 and the preceding vehicle becomes less than a threshold value while traveling. In this screen, an icon I11 indicating the position of the vehicle 40, an information display area TC31, and an information display area TC32 indicating the current speed are displayed on a map M11. The control unit 11 may notify the collision warning by sound in addition to the above-mentioned screen display. The time for the notification 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 depending on the notification content.

[0170] <6-6. Notification of warnings regarding distracted driving and drowsy driving> The control unit 11 performs a fifth notification control to notify the state of the occupant of the vehicle 40 based on an image of a camera that captures the interior of the vehicle 40. The occupant is a person who is in the vehicle 40, and may be the driver, but may be another occupant. As shown in FIG. 39(a), the electronic device 10 cooperates with the camera 70 to notify the alarm regarding distracted driving and drowsy driving. The camera 70 is a camera that captures the interior of the vehicle. The camera 70 detects the state of the user based on the captured image and outputs information corresponding to the state to the electronic device 10. The camera 70 and the electronic device 10 are connected via a wired or wireless communication cable. The camera 70 captures at least the face of the user. The camera 70 detects the direction of the user's face and the direction of the line of sight, and notifies information corresponding to the detection result. The camera 70 is attached to the windshield 42, which is higher than the line of sight of the user, by using a predetermined attachment member. The camera 70 may be attached to the rearview mirror 43, the dashboard 41, or other locations.

[0171] As shown in FIG. 39(b), the control unit 11 issues a distraction warning when the user's face is turned to the side by a predetermined angle from the front. FIG. 40(a) is an example of a notification screen that warns of distraction. In this screen, an icon I11 indicating the position of the vehicle 40, an information display area TD11, and an information display area TD12 indicating the current speed are displayed on a map M11. FIG. 39(c) is an example of a screen related to a dozing off warning, and when the user closes both eyes for about one second or more, the control unit 11 displays a notification screen that warns of dozing off while driving, as shown in FIG. 40(b). In this screen, an icon I11 indicating the position of the vehicle 40, an information display area TD21, and an information display area TD22 indicating the current speed are displayed on a map M11. When the user closes both eyes for about three seconds or more. As shown in FIG. 39(c) and FIG. 40(c), the control unit 11 changes the background color to display a notification screen that warns of dozing off while driving. On this screen, an icon I11 indicating the position of the vehicle 40, an information display area TD31, and an information display area TD32 indicating the current speed are displayed on a map M11. When notifying the driver of a warning regarding distracted driving and drowsy driving, the control unit 11 notifies the driver by sound in addition to the above-mentioned screen display. As shown in Fig. 39(c) and Fig. 41, the control unit 11 may change the sound associated with the warning depending on at least one of the time the eyes are closed and the number of times the warning has been issued.

[0172] <6-7.GPS warning> Next, the GPS warning will be described. The GPS warning is a control to give a warning when the position measured by the GPS receiving unit 16 is in a predetermined positional relationship with the object to be notified. The predetermined relationship may be that the vehicle and the object to be notified have approached to a predetermined distance. The GPS warning may include the warning control described in <6-2. Notification regarding pulsed light Lout (mobile type)>. FIG. 42 is a diagram showing a GPS warning. There are various warning methods depending on the settings. When the warning 1000m switching (initial value) is set, the control unit 11 may display a warning screen from the standby screen when it is 1 km before the object to be notified. When the warning 500m switching is set, the control unit 11 may display a warning screen from the standby screen when it is 500 before the object to be notified. When the standby screen is set to be fixed, the control unit 11 may display a standby screen regardless of the distance to the object to be notified.

[0173] In the case of a GPS warning, if the object to be notified is located at an angle of 25 degrees or more to the left or right of the front of the vehicle 40 with respect to the traveling direction of the vehicle 40, the control unit 11 may notify the user by adding a voice indicating the direction of the object to be notified, such as "left direction" or "right direction." In this way, the user can easily understand the direction of the object to be notified.

[0174] <6-8. Notification control> The control unit 11 may display the animation image described above regardless of the location and time of the electronic device 10 when the pulsed light Lout is received, but may change the animation image according to at least one of the location and time. The animation image may be displayed using a photograph or a CG image of the site where the speed enforcement device is installed.

[0175] 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 presence of the optical speed measurement device, and "×" indicates that the notification control is not permitted. The control unit 11 may stop the third notification control during the period in which the first notification control or the second notification control is being performed. In this way, when notifying the presence of the speed measurement device 30, it is possible to prevent the presence of the radar speed measurement device from being notified. In addition, even if the control unit 11 detects the presence of a speed measurement device of another method during the period in which the notification screen of the reception of the pulsed light is displayed, it is preferable not to notify the presence. The other method may be a radar method, and it is preferable to receive microwaves. If the pulsed light has fewer false detections of the speed measurement device than the radar wave, the accuracy of the notification of the speed measurement device is improved. In addition, if the presence of any speed measurement device is notified, the user will consciously drive safely, and there will be less inconvenience.

[0176] 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 a notification regarding a collision warning during a period in which a notification screen of the reception of pulsed light is displayed. This is based on the idea that a collision warning is a high-priority warning. For example, when the control unit 11 performs a collision warning while a notification screen of the reception of pulsed light is displayed, the control unit 11 causes a display shown in FIG. 44. In this example, the information display areas TA1, TA2, and TC1 are displayed simultaneously. Note that the departure warning, the close approach warning, and the lane departure warning may be performed in the same manner. In this way, when a need arises for a notification regarding a collision warning, the control unit 11 can perform a collision warning even when the vehicle is approaching the speed measurement device 30.

[0177] The control unit 11 may stop the fifth notification control during the period when the first notification control or the second notification control is being performed. The control unit 11 may not issue a warning regarding inattentive driving or drowsy driving during the period when the notification screen of the reception of the pulsed light is being displayed. In this way, when a need arises for a collision warning, the control unit 11 can issue a collision warning even when a warning regarding the user's inattentive driving or drowsy driving should be issued.

[0178] The control unit 11 may perform the fourth notification control in parallel with the third notification control. When the presence of a radar-type speed measuring device is detected and a notification screen for the device is displayed, a collision warning is issued. This is based on the idea that a collision warning is a high-priority warning. For example, when the control unit 11 detects a radar-type speed measuring device and displays a notification screen, the control unit 11 displays the display shown in FIG. 45 in order to issue a collision warning. In this example, the information display areas TA4, TA5, and TC1 are displayed simultaneously. Note that the departure warning, the close approach warning, and the lane departure warning may be similarly issued. On the other hand, the control unit 11 may stop the fifth notification control during the period in which the third notification control is being performed. In this way, when the presence of the speed measuring device 30 is notified, it is possible to prevent an alarm for distracted driving or drowsy driving from being issued.

[0179] 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 a first event and a second event occur simultaneously as events to be notified, the control unit 11 may perform a notification regarding the first event having a higher priority, while stopping a notification regarding the second event having a lower priority. In this way, it is possible to make it easier for the user to grasp the occurrence of the first event having a higher priority. The control unit 11 may also simultaneously notify both the first event and the second event. In this way, it is possible to make the user grasp information on both the first event and the second event. The control unit 11 may also simultaneously notify the occurrence of three or more events. In addition, the control unit 11 may match the period for notifying the first event and the second event, but may also make them different. In addition, the combination of the first event and the second event may be determined in advance at the design stage, or may be set by the user. Furthermore, when two or more notification controls are performed in parallel, the notification by display may be performed in parallel, but at least one of the notification by sound may be stopped.

[0180] Also, the electronic device 10 may not notify using one or both of the optical and radar methods when the speed of the vehicle 40 is less than a predetermined speed. This is because there are relatively few safety issues when the vehicle 40 is traveling at the predetermined speed, and thus notification is unnecessary. However, when the vehicle 40 is traveling on a predetermined type of road such as a green belt, the electronic device 10 may notify using one or both of the optical and radar methods. The predetermined speed may be, for example, 30 km / h, but may be any other speed. In this way, depending on the position of the vehicle 40, if the presence of the speed measurement device 30 should be notified even if the speed of the vehicle 40 is less than the predetermined speed, this can be notified.

[0181] Also, it is preferable that the electronic device 10 has a cancellation function corresponding to the radar system but does not have a cancellation function corresponding to the optical system, because it is considered that the optical system is less likely to cause false alarms that can occur with the radar system.

[0182] Furthermore, the electronic device 10 may notify the contents and timing of the information related to the notification object according to the tables shown in FIG. 46 to FIG.

[0183] [7. Mechanism of Electronic Device 10] FIG. 49 is a perspective view showing an example of the external configuration of the electronic device 10. FIG. 50 and FIG. 51 are six-sided 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. The display unit 13, the light emitting unit 23, and the illuminance sensor 201 of the sensor unit 20 are provided on the front side of the first housing 1001. The display area of ​​the display unit 13 is located in the opening on the front side of the first housing 1001. A speaker 14 is provided so as to output sound from the upper end surface of the second housing 1002. The right end surface of the housing 100 is provided with an attachment section 21 (i.e., an SD card slot) for attaching an SD card. A light receiving unit 12 is provided in the upper right part of the rear surface of the housing 100. In addition, a power switch 221 and a DC jack 222 of the power supply unit 22 are provided in the lower left part of the rear surface of the housing 100.

[0184] As shown in FIG. 51, the second housing 1002 has a lid 1003 on its rear surface. The lid 1003 is located at the upper right of the second housing 1002 when viewed from the rear surface. The lid 1003 is a detachable cover for the second housing 1002, and is a member that is longer in the left-right direction than in the up-down direction. The lid 1003 is a light-transmitting portion formed of a material that transmits at least the pulsed light Lout. The lid 1003 may be formed of the same material as the housing 100, but may be formed of a different material. The lid 1003 is formed of a resin or other material. The lid 1003 is formed of a material that blocks visible light, and may function as a visible light cut filter, but may not. The lid 1003 may be a semi-transparent or transparent member. Instead of the lid 1003, a light-transmitting portion that transmits at least the pulsed light Lout may be formed on the rear surface of the housing 100.

[0185] FIG. 52 is a rear view showing a state in which the cover 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 into 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 at least light of a specific wavelength. The first window 101 and the second window 102 are arranged at a predetermined interval in the left-right direction. The first window 101 and the second window 102 are circular, but may have other shapes. Pulsed light enters the inside of the housing 100 through the first window 101 and the second window 102. If the cover portion 1003 is a semi-transparent or transparent member, the first window 101 and the second window 102 can be visually recognized by the user. This may have a design appeal.

[0186] FIG. 53 is an exploded perspective view of the electronic device 10. As shown in FIGS. 53(a) and 53(b), the housing 100 of the electronic device 10 accommodates, in order from the first housing 1001 side, the display unit 13, the first substrate 1010, and the second substrate 1030. The first substrate 1010 is a rectangular substrate that is longer in the left-right direction than in the up-down direction in a plan view. The display unit 13 is mounted on a 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). Here, the control circuit 1331 is one, but may be replaced by two or more control circuits. The microwave receiving unit 15 is mounted on a second surface opposite to the first surface of the first substrate 1010. The microwave receiving unit 15 has a substantially rectangular parallelepiped shape. Second housing 1002 houses these members and is fixed to first housing 1001 with screws.

[0187] FIG. 54 is a rear view showing a state in which the second housing 1002 is further removed from the electronic device 10. FIG. 55, FIG. 56, and FIG. 57 are perspective views showing the internal configuration of the electronic device 10 in this state. The second substrate 1030 is arranged on the rear side of the first substrate 1010 so as to overlap the first substrate 1010. The second substrate 1030 is a substrate that is substantially L-shaped in a plan view. The second substrate 1030 has such a shape because the region where the microwave receiving unit 15 is present is cut out. In this way, the increase in thickness of the electronic device 10 can be suppressed compared to the case in which the microwave receiving unit 15 is overlapped by the second substrate 130. The light receiving unit 12 is mounted in the first region Ar3 of the second substrate 1030 that is long in the vertical direction. Facing the first window 101, the first wavelength selecting unit 121 and the first light receiving element 122 are provided. Facing the second window 102, a second wavelength selection section 123 and a second light receiving element 124 are provided.

[0188] The first wavelength selection unit 121, the first light receiving element 122, and the second wavelength selection unit 123 and the second light receiving element 124 facing the second window 102 are housed in a shield case 1031. The shield case 1031 is made of, for example, a conductive material (for example, metal) and is a member for preventing the elements of the light receiving unit 12 from generating noise due to the influence of electromagnetic waves from the outside. The source of the electromagnetic waves is an electrical component such as a drive unit for driving a wiper provided on 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 from the space in which the second light receiving element 124 is housed. This partition wall 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 susceptible to the influence of electromagnetic noise compared to a case where they are not shielded with a conductive material. In addition, due to the presence of the partition, the 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 is reduced.

[0189] In the second substrate 1030, the GPS receiver 16 and the speaker 14 are mounted in the second region Ar4. The second region Ar4 is shorter in the vertical direction than the first region Ar3 and protrudes upward than the first region Ar3. It is preferable that the GPS module is mounted on the first surface of the GPS receiver 16 on the front side, and the GPS antenna is mounted on the second surface of the back side. The GPS antenna is disposed above the microwave receiver 15 in order to ensure upward directivity. In addition, in order to ensure space for the GPS receiver 16, the second region Ar4 in the second substrate 1030 protrudes upward from the first region Ar3. The microwave receiver 15 is located below the GPS receiver 16 and the speaker 14. The mounting section 21 is mounted on the left side of the first substrate 1010. The power switch 221, the DC jack 222, and the button battery 223 of the power supply section 22 are provided below the mounting section 21. The button battery 223 is an internal power source of the electronic device 10. Moreover, on the front side of the second substrate 1030, opposite to the first area Ar3, a wireless module 171 of the communication unit 17 is mounted.

[0190] FIG. 58 shows a photograph of the second substrate 1030. FIG. 58(a) is a view from the rear side, and FIG. 58(b) is a view from the front side. In FIG. 58(a), the GPS receiver 16 is mounted in the area indicated by "(16)", and the speaker 14 is mounted in the area indicated by "(14)". The light receiving unit 12 is mounted in the area surrounded by the white line on 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 that passes 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 high potential side power supply line, 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 terminal of the amplifier IC1(1 / 2) is connected to the negative input terminal 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 high potential power line, and the anode is connected to one end of the resistor R2. The other end of the resistor R2 is grounded. The input terminal 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 terminal of the amplifier IC1(2 / 2) is connected to the positive input terminal of the differential amplifier AMP. The amplifiers IC1(1 / 2) and IC1(2 / 2) output their outputs at half their original values. A signal corresponding to the difference between the amounts of light received by the photodiodes PD1 and PD2 is output from the output terminal of the differential amplifier AMP. The control unit 11 detects the speed measuring device 30 based on this difference. The control unit 11 preferably detects the speed measuring device 30 based on the signal after it has been amplified by the differential amplifier AMP, passed through the amplifier Q1 and the amplifier IC2(2 / 2), and then waveform-shaped.

[0191] 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 band pass filter here. As shown in FIG. 60(a), it transmits light in a wavelength range including a specific wavelength λout 905 nm, which is a target wavelength, and blocks light in other wavelength ranges. The width of the wavelength range through which light is transmitted is, for example, 20 nm, but is more desirably narrower than this. The second wavelength selection unit 123 is, for example, a band elimination filter. As shown in FIG. 60(b), the second wavelength selection unit 123 blocks light in a wavelength range including a specific wavelength λout, and transmits light in other wavelength ranges, which are non-target wavelengths. The width of the wavelength range through which light is blocked is, for example, 20 nm, but is more desirably narrower than this.

[0192] In Fig. 60, the transmittance of the frequency region through which light passes is set to more than 80%, and the frequency region through which light is blocked is set to less than 15%, but it is sufficient if the transmittance is tolerable for practical use. It is desirable for the wavelength selection section to exhibit a steep characteristic as exemplified in Fig. 60, but it may also exhibit a broader characteristic.

[0193] When the second substrate 1030 is further removed from the electronic device 10, the state shown in FIG. 61 is obtained.

[0194] [8. Other examples of electronic devices] FIG. 62 is a perspective view showing the external configuration of an electronic device 80, which is another example of an electronic device. FIG. 63 is a perspective view showing the external configuration of the electronic device 80 when viewed from the right front side with respect to the traveling direction of the vehicle. As shown in FIG. 62 and FIG. 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 at the top and a second housing 802 located at the bottom. A lid portion 803 is provided on the front side of the electronic device 80. The lid portion 803 is a light-transmitting member formed of a material that transmits pulsed light, similar to the lid portion 1003.

[0195] 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, a first substrate 810, a second substrate 820, and a third substrate 830 are arranged from bottom to top at a distance from each other. A button battery 811 is provided on the first substrate 810 and is an internal power source of the electronic device 80. A difference from the conventional electronic device is that a light receiving unit 841 is formed on a fourth substrate 840 so as to receive pulsed light from the front side in the traveling direction of the vehicle, and an antenna unit 850 of the microwave receiving unit is arranged adjacent to the light receiving unit 841. 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 part that functions as an antenna of the microwave receiving unit. The antenna unit 850 is configured by a predetermined pattern formed on a substrate. A processing circuit 851 that processes a signal from an antenna unit 850 of the microwave receiving unit is mounted on the second board 820. A GPS receiving unit 860 is mounted above the third board 830. With this configuration, the electronic device 80 performs notification control to output a notification using sound or display to an output destination (e.g., a conventional laser detector) connected to the outside via a cable 81 to notify information. The function related to this notification may be the same as that of the electronic device 10. The antenna unit 850 is disposed at a position adjacent to the fourth board 840. It is preferable that the normal direction of the antenna unit 850 and the normal direction of the fourth board 840 intersect, and it is particularly preferable that they are parallel to each other.

[0196] In this way, it is possible to provide a technique for notifying a user of the presence of a speed measurement device while minimizing changes to existing systems.

[0197] [9. Noise reduction methods] When the source of noise is the circuit of the light receiving unit 12 itself, it is effective to lower the noise floor by lowering the gain of the amplifier. On the other hand, if the C / N ratio in the light receiving unit is improved, the gain of the amplifier can be increased, which is desirable. Noise may 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 advisable to adopt a configuration in which the output of the light receiving unit 12 is put into two sets of amplifier circuits (amplifier circuit 1 and amplifier circuit 2). In this example, as shown in FIG. 67, if the noise peak exceeding the threshold Th of amplifier circuit 1 is peak N1, the peak of the signal when pulsed light is received is peak P1, the noise peak exceeding the threshold Th of amplifier circuit 2 is peak N2, and the signal when pulsed light is received is peak P2, the probability that N1 and N2 coincide in time is very low, and P1 and P2 coincide. Therefore, if the simultaneous detection of both N1 and N2 is regarded as the reception of pulsed light, it is considered that the noise reduction is mitigated and the detection accuracy is improved. As shown in Fig. 67, if there is a difference in the peak values ​​exceeding the thresholds of the two circuits by using (P1 + P2) / 2, the peak value can be lowered by adding them together and dividing by 2. A comparator may be used to determine whether there is such a difference in the peak values.

[0198] In this embodiment, since the amplifier Q1 is a noise source, it is preferable to replace the amplifier Q1 with an amplifier in circuit 1 and an amplifier in circuit 2 and a circuit that halves their outputs. Also, an integrating circuit may be provided in the circuit of the light receiving unit 12. Also, the circuit 1 may be integrated by an integrating circuit using a capacitor or the like, and the circuit 2 may be left as it is, with a comparator provided.

[0199] [10. Other embodiments] (10-1) The electronic device 10 may be a system that issues an alarm when it detects a reflective pattern that looks like a police officer is present. The reflective pattern is a pattern of reflective material that is placed at a predetermined location where police officers are likely to be present. This pattern may be a pattern used on a predetermined sign or police uniform. The electronic device 10 may use the in-vehicle camera 50 to obtain an image of the area in front of the vehicle 40, analyze the image, and detect the presence of the predetermined reflective pattern. In this way, the presence of police officers can be reported in a location where they are likely to be present, reducing the possibility of false alarms. The alarm may be issued by display, sound, or a combination of these.

[0200] In the above-mentioned (10-2) and (10-1), the warning may be a speed enforcement warning. The speed enforcement warning may be a warning that a speed enforcement point is approaching.

[0201] (10-3) The pattern of the reflective material that makes it look like the police officer is present should include at least two of the following: a horizontal line corresponding to the position of a person's waist, a vertical line corresponding to a baton, a line corresponding to the horizontal position of a helmet, a line corresponding to a sash, and a line corresponding to the V-shape of a vest. For example, it is preferable that lines are detected in the order of diagonal, horizontal, and vertical from the top.

[0202] (10-4) The electronic device 10 may detect the reflective pattern that gives the appearance of a police officer based on the detection of a reflection level that corresponds to a retroreflective tape.

[0203] (10-5) The electronic device 10 may suppress detection of the reflective material pattern that makes it appear as if the police officer is present at a position higher than the height of a person. As a suppression method, it is preferable to prevent detection of parts above a certain height in advance. Also, even if the pattern is detected, it may not be detected if it is above a certain height. It is also preferable to set a condition that all components of the reflective material pattern are included within the vertical height of the person (for example, within 2 m).

[0204] In (10-5), the electronic device 10 may also exclude positions corresponding to the road surface to prevent misidentification of stop lines on the road surface, etc. Stop lines on the road surface are excluded because they consist of vertical and horizontal lines and may produce the same amount of light as retroreflection.

[0205] (10-6) The electronic device 10 may store location information of locations where reflective patterns that give the appearance of police officers have been installed in advance, and may be configured to suppress the alarm at the stored locations.

[0206] (10-7) The electronic device 10 may change the manner of the warning depending on the number of reflective patterns that appear to indicate the presence of a police officer. For example, when one reflective pattern that appears to indicate the presence of a police officer is detected, a crackdown warning may not be issued as the warning, and when multiple reflective patterns that appear to indicate the presence of a police officer are detected, a crackdown warning may be issued as the warning.

[0207] (10-8) The electronic device 10 may suppress the alarm when only one reflective pattern that resembles the presence of a police officer is detected within a predetermined time. The electronic device 10 may decide whether to issue an alarm based on the number of detections within a predetermined time window. The predetermined time may be about 2 seconds.

[0208] (10-9) The electronic device 10 may detect the reflective pattern that makes it look like a police officer is present based on a video signal captured by a camera installed in a drive recorder. There is a possibility that the reflective pattern can be detected from a distance farther than the detection range of the pulsed light.

[0209] (10-10) It is preferable that the electronic device 10 does not detect reflective patterns that may give the impression of a police officer behind the vehicle, and does not detect such patterns in the passing lane ahead of the vehicle, but detects such patterns to the left of the driving lane.

[0210] (10-11) The electronic device 10 has a function of issuing an alarm when it detects electromagnetic waves (e.g., pulsed light or microwaves) for measuring the speed of a vehicle traveling on a road, and even if it detects a pattern of reflective material that looks like the presence of a police officer, if it detects electromagnetic waves for measuring the speed of a vehicle traveling on the road, it is preferable to give priority to the alarm when the electromagnetic waves for measuring the speed of a vehicle traveling on the road are detected, and suppress the alarm when the pattern of reflective material that looks like the presence of a police officer is detected.

[0211] (10-12) The electronic device 10 has a function of sounding an alarm when it detects electromagnetic waves for measuring the speed of a vehicle traveling on a road, and when it detects a pattern of reflective material that gives the appearance of a police officer and detects electromagnetic waves for measuring the speed of a vehicle traveling on a road, it may sound an alarm different from the alarm that would be issued if only these were detected (in particular, an alarm indicating a higher level of urgency).

[0212] (10-13) The electronic device 10 may be equipped with an infrared detection device for detecting the presence or absence of an object, and may be equipped with a function for determining (guessing) the type of crackdown based on the detection of a reflective pattern that resembles the presence of a police officer. If there is no person and there is reflective material, it is likely that it is only an automatic speed camera. If there is a person and there is reflective material, it is likely that there is a wide range of crackdowns, including an automatic speed camera. The control unit 11 may notify information based on the results of such type determination. The notification may be made using different display and / or sound.

[0213] (10-14) When the electronic device 10 recognizes a moving object that matches the pattern of a night police, it is preferable to determine that the object is a police officer, not a night police sign. The control unit 11 cancels the vehicle behavior and performs the calculation.

[0214] (10-15) The electronic device 10 should have a function to suppress (for example, not execute) the night police warning during the daytime (or when it is bright). In particular, it is preferable not to even recognize night police signs.

[0215] [11. Other embodiments] Further, other embodiments will be described. The section [11. Other embodiments] may include configurations based on ideas common to the matters described in other sections.

[0216] The electronic device 10 may have a protruding portion used for receiving pulsed light from the speed measuring device 30. For example, the electronic device 10 may have a shape in which a portion where at least a part of the light receiving unit 12 is provided protrudes more than other portions. Specific embodiments of such a configuration will be described below.

[0217] (11-1) The electronic device 10 may have a light entrance portion at a position protruding forward in the traveling direction of the vehicle (e.g., the normal direction of the display screen of the display portion) from the rear or side of the housing. The entrance portion is a portion of the electronic device 10 where light is entered to be received by the light receiving portion. The entrance portion is a portion included in the external appearance of the electronic device 10. For example, the portion of the electronic device 10 where the above-mentioned cover portion 1003 is provided is the entrance portion, and the portion where the first window 101 or the second window 102 is provided is also the entrance portion.

[0218] In this way, the light can be received further forward, making it less susceptible to the effects of obstacles that block the laser light. In particular, when the light is received after passing through the windshield, the effect of light from the speed measuring device 30 refracted by the windshield can be reduced by installing the incident part closer to the windshield. In particular, when the display part and the light receiving part are integrated into a housing, this configuration allows for simple and easy installation in the vehicle interior and reduces the above-mentioned effects.

[0219] In the example of Fig. 68(a), a first portion 10041 and a second portion 1042 protruding forward in the traveling direction of the vehicle from the first portion 1041 are provided on the rear surface 1004 of the housing 100 of the electronic device 10. The first portion 1041 is flat. The second portion 1032 here has a hemispherical shape. A part or the whole of the second portion 1042 corresponds to the incident portion.

[0220] The second portion 1042 may be located, for example, above the center in the vertical direction of the rear surface 1004. Compared to a position below, the second portion 1042 may be less susceptible to the influence of obstacles blocking the light from the speed measurement device 30. The second portion 1042 is provided to the right of the center in the horizontal direction of the rear surface 1004 when viewed from the rear side in the traveling direction of the vehicle (preferably the side where the passenger compartment is present). Alternatively, the second portion 1042 may be provided to the left of the center in the horizontal direction of the rear surface 1004 when viewed from the rear side in the traveling direction of the vehicle. In this case, the incident portion is located on the left side in the traveling direction of the vehicle, which is closer to the speed measurement device 30, and this may be desirable from the viewpoint of light reception.

[0221] (11-2) The electronic device 10 may have an entrance portion at a position protruding from the rear or side of the housing to the left of the traveling direction of the vehicle (or in a direction parallel to the display screen of the display portion).

[0222] (11-3) The electronic device 10 may have an entrance portion at a position protruding forward and leftward in the traveling direction of the vehicle from the rear or side of the housing (or in a direction intersecting the normal to the display screen of the display unit 13 and toward the left). In this case, it is preferable that the entrance portion has a surface whose normal direction is diagonally leftward.

[0223] In the example of FIG. 68(b), a first portion 1041 and a second portion 10042A protruding forward and leftward in the traveling direction of the vehicle from the first portion 1041A are provided on a rear surface 1004A of a housing of the electronic device 10. The second portion 1042A is prism-shaped here. A part or the whole of a surface 1043 on the tip side of the second portion 1005B corresponds to the incident portion. The surface 1043 is not parallel to the first portion 1041, but faces in an oblique direction with respect to the traveling direction of the vehicle. In this case, the incident portion is located closer to the speed measuring device 30 and on the left side in the traveling direction of the vehicle, which may be desirable from the viewpoint of light reception.

[0224] Surface 1043 may be, for example, a flat surface, but may include a curved portion facing the front left direction (for example, the curved surface may be an arcuate surface or a spherical surface). The position where second portion 1042A is provided on rear surface 1004A can be modified in various ways, similar to the position where second portion 1042 is provided on rear surface 1004.

[0225] With this configuration, at least one of the light receiving elements of the light receiving section 12 may be provided inside the second portion 1042A and may be arranged facing the direction in which the surface 1043 faces.

[0226] In the configurations of (11-1) to (11-3), the length in the protruding direction of the portion (for example, the second portion 1042, 1042A) protruding from the rear surface of the housing may be smaller or larger than the thickness of the housing of the electronic device 10. In the example of FIG. 69(a), the rear surface 1004B of the housing 100 of the electronic device 10 is provided with the first portion 1041 and the second portion 1042B protruding forward from the first portion 1041 in the traveling direction of the vehicle. The length in the protruding direction of the second portion 1042B is smaller than the thickness of the housing. In the example of FIG. 69(b), the rear surface 1004C of the housing 100 of the electronic device 10 is provided with the first portion 1041 and the second portion 1042C protruding forward from the first portion 1041 in the traveling direction of the vehicle. The length in the protruding direction of the second portion 1042D is larger than the thickness of the housing.

[0227] In the configurations (11-1) to (11-3), the part protruding from the rear surface of the housing may be rectangular, cubic, cylindrical or other columnar. The surface at the tip of the protruding part may be flat, an inclined surface inclined with respect to the surface of the first portion 1041, a curved surface or a surface of other shape. At least a part of the protruding part may be semi-cylindrical, spherical, triangular prism, lens or prism-shaped to change the optical path or provide light collection. A sensor may be provided at the destination of the optical path change or the destination of the light collection.

[0228] (11-4) The incident part may be provided separately from the housing 100. The incident part may be provided in a portion that is in physical contact with the housing 100, or may be provided in a portion that is not in physical contact with the housing 100. For example, the incident part may be configured such that light incident on the incident part is received by the light receiving part, and a signal corresponding to the received light is supplied to the control unit 11. In this way, even if there are restrictions on changing the position or attitude of the housing 100, for example, from the viewpoint of ease of viewing the display unit 13, the position or attitude of the incident part can be adjusted so that the light from the speed measuring device 30 can be easily received.

[0229] The electronic device may be provided with a connector for connecting wiring that outputs a signal corresponding to the reception of light from the above-mentioned "separate entity," and the control unit may perform alarm control based on the signal corresponding to the reception of light input via the connector.

[0230] As the "separate part" of (11-5) and (11-4), the incident part may be provided on a mounting member that is attached to a vehicle. In this case, the mounting member may be provided at the position of the incident part of (11-1) to (11-3). In this case, the mounting member may be attached to the housing by adhesive, a fastener, or other method.

[0231] It would be a good idea to use a drive recorder as a "separate entity" of (11-6)(11-4).

[0232] The "separate body" in (11-7) and (11-4) may be an attachment portion of the drive recorder. This attachment portion is a portion for attaching the drive recorder to a predetermined attachment portion of the vehicle. The attachment portion is, for example, a portion that is physically connected to the drive recorder, and may include, for example, a portion that makes surface contact with the attachment portion. The attachment member is, for example, a member that is attached to the windshield of the vehicle, and may have an incident portion on the attachment surface side of the windshield.

[0233] (11-8) The configuration is not limited to one in which the housing has a function for performing notification control, and the housing may have a function for a drive recorder.

[0234] (11-9) The incident portion may be configured to be detachable from 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.

[0235] (11-10) It is preferable to provide an adjustment means for adjusting the orientation of the incident part relative to the housing. The adjustment means may have a structure similar to that for adjusting the orientation of the camera of a mirror-type drive recorder. In addition, the housing may be provided with a camera, and the orientation of the camera and the incident part may be independently adjusted.

[0236] (11-11) In the electronic device 10, when the control unit 11 determines that light from the speed measuring device 30 has been received, it is preferable to record the video and the values ​​of various sensors before and after the reception. The control unit 11 may also record information on whether the area in which the vehicle is located is within a predetermined area such as the zone 30.

[0237] (11-12) In the electronic device 10, the control unit 11 may record setting information related to a notification (for example, an alarm) when light from the speed measuring device 30 is received, together with the position information and the like.

[0238] (11-13) In a configuration in which electronic device 10 executes notification control when it receives a predetermined radio wave (e.g., microwave), it is preferable that the incident portion is disposed forward in the traveling direction of the vehicle from microwave receiving portion 15. Here, being disposed forward preferably means that the incident portion protrudes forward from microwave receiving portion 15.

[0239] (11-14) In a configuration in which electronic device 10 executes notification control when position information acquired from GPS receiver 16 satisfies a predetermined condition, it is preferable that the incident portion is arranged forward of GPS receiver 16 in the traveling direction of the vehicle. Here, being arranged forward preferably means that the incident portion protrudes forward of microwave receiver 15. Here, the predetermined condition may be that the current position indicated by the position information acquired from GPS receiver 16 and the position indicated by the position information stored in memory 18 are in a predetermined proximity relationship.

[0240] (11-15) In a configuration in which the electronic device 10 includes the light-emitting unit 23 or other light-emitting units, the incident unit may be provided on the surface opposite to the surface on which the light-emitting unit is provided. When the light-emitting unit is provided on the front side of the housing 100, the light-emitting unit may be provided on the rear side.

[0241] (11-16) The portion where light for obtaining a second amount of received light corresponding to the second window 102 enters (hereinafter referred to as the "second incident portion") may be provided within the protruding portion where the incident portion is provided. In this case, the second incident portion may be provided within the protruding portion where the incident portion is provided, in the same orientation as the incident portion. The second incident portion may be provided within the protruding portion where the incident portion is provided, in a different orientation from the incident portion.

[0242] (11-17) The second incident portion may be provided in a portion of the housing different from the protruding portion in which the incident portion is provided. The second incident portion may be provided in the protruding portion in which the incident portion is provided, in the same orientation as the orientation of the incident portion. The second incident portion may be provided in the protruding portion in which the incident portion is provided, in an orientation different from the orientation of the incident portion.

[0243] (11-18) In the case where there is a predetermined proximity relationship with at least one of the zone 30, a one-lane road, a school, a kindergarten, or a nursery school, the control unit 11 of the electronic device 10, when it determines that a pulsed light has been received, may increase the possibility that it is the speed measurement device 30, or decrease the possibility that it is the source of a false alarm. The zone 30 is an area where a speed limit of 30 km / h is implemented in order to restrict the driving speed of vehicles within the area and the passage of vehicles through the area.

[0244] Optical speed measuring devices are available in two types: portable and fixed on the roadside or on the road. Portable devices are often irregularly carried to and installed in such places for measurement, so drivers need to be more careful. In this way, it is possible to more reliably notify in such places. In addition, the inventors have found that even if the possibility of false alarms increases in such places, drivers can be made aware of safety in such places because these places are places where special attention should be paid to accidents.

[0245] (11-19) When the control unit 11 of the electronic device 10 determines that it is at least one of a predetermined time period such as late at night, a predetermined weather condition such as bad weather, or the device is traveling on a predetermined road such as a road with multiple lanes, it is preferable to increase the possibility that it is a speed measuring device 30 or decrease the possibility that it is a source of a false alarm.

[0246] The inventors found that portable types of sensors often do not perform measurements in such situations because the possibility of erroneous measurements increases. In this way, it is possible to reduce false alarms in particular in such situations. In particular, in such situations, the possibility of light from other vehicles being directly or indirectly incident on the light receiving section due to diffuse reflection increases, increasing the possibility of false alarms. However, by doing this, it is possible to reduce such problems.

[0247] (11-20) The second light receiving element 124 may be used to detect the state of light other than that from the speed measuring device 30. The control unit 11 of the electronic device 10 may detect the state of light other than that from the speed measuring device 30 based on the light received by the second light receiving element 124. The control unit 11 may, for example, have a function of changing the brightness of the screen / light emitting element (such as an LED) according to the amount of surrounding light, a function of switching the screen between a daytime display and a nighttime display, and may detect whether the vehicle is traveling in a tunnel and whether the wipers are operating. Whether the wipers are operating may be detected by detecting whether the wipers are Hi or Low based on the periodicity of light blocking.

[0248] In this way, in cases where the electronic device 10 has a function of detecting the light conditions around the electronic device 10 and performing control based on the detection results, there is no need to provide a separate sensor for detecting the light conditions around the electronic device 10, which reduces costs and makes it easier to miniaturize the device (housing).

[0249] (11-21) It has already been explained that it is preferable for the light receiving unit to be provided outside the vehicle and for the part that realizes the function of performing notification control to be provided inside the vehicle, but it is further preferable to do as follows. The light receiving unit is preferably provided in a position toward the front of the vehicle within the range of the vehicle's wheel height direction width (particularly within the range of the width of the license plate height). The light receiving unit may be provided in a camera installed outside the vehicle cabin to capture images of the front or left front of the vehicle (here, this may include a part of the left side), or may be configured so as to be installable adjacent to the camera. 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 routed through a single cable. In this case, it is preferable that both signal lines are placed within the same coating.

[0250] (11-22) The light receiving unit may be provided in a position forward of the driver's seat in the vehicle interior and at a height that is the same as the height range of a member through which light passes from outside the vehicle interior to inside the vehicle interior. This reduces the possibility of light being blocked by the wipers on sunny days, allowing for more reliable detection.

[0251] The light receiving unit may have a means for installing it at a position that does not overlap with the initial position of the wiper as seen from inside the vehicle. The light receiving unit may be installed as low as possible in the vehicle. This makes it difficult for the light receiving unit to obstruct the forward visibility during driving, and reduces the blocking of the light from the speed measuring device 30, allowing for more reliable detection of the speed measuring device 30. The light receiving unit may be located, for example, at the position of the license plate. The light receiving unit may be located on the left side of the vehicle in the traveling direction. Since the light from the speed measuring device 30 is irradiated obliquely toward the vehicle from the sidewalk 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 in a state where the vehicle is several meters ahead of the vehicle, the possibility that the light irradiated obliquely toward the vehicle from the sidewalk on the left side can be blocked by the preceding vehicle and detection cannot be performed can be reduced, and the fluttering of the state in which the light from the speed measuring device 30 is or is not detected when the distance between the vehicle and the preceding vehicle fluctuates can be reduced.

[0252] The control unit 11 of the electronic device 10 may provide a notification that it will be difficult to receive light from the speed measurement device 30 when the distance to the preceding vehicle is in a predetermined close range. The control unit 11 may change the sensitivity of receiving light from the speed measurement device 30 depending on whether the distance to the preceding vehicle is in the predetermined close range or not. For example, the sensitivity may be increased when the distance to the preceding vehicle is in the predetermined close range compared to when the distance is not in the predetermined close range.

[0253] (11-23) The control unit 11 determines that the light is from an object to be notified when the light pattern matches or is similar to the light pattern sent from the speed measuring device 30. It may also determine that the light is not from an object to be notified when the light pattern does not match or is not similar to this pattern. The light pattern sent from the speed measuring device may be determined by program logic. Information regarding the light pattern may be stored in advance in the storage means (for example, storage example 1: parameters from (11-24) to (11-26) below, storage example 2: information regarding the degree of change in the amount of light over time from (11-24) to (11-26) below, etc.), and it may be determined whether the light is similar to the stored pattern.

[0254] (11-24) The control unit 11 of the electronic device 10 may determine that the speed measuring device 30 is present when it receives light that changes between on and off at a predetermined time interval (e.g., every several tens of microseconds). The control unit 11 may not determine that the speed measuring device 30 is present when it receives light other than this. In this case, the on time may be, for example, on the order of nanoseconds, and the off time may be on the order of several tens of microseconds.

[0255] When the control unit 11 of the electronic device 10 detects that the light is turned on for a predetermined on-time (for example, a very short time) and turned off for a longer predetermined off-time (a time much longer than the very short time) repeatedly, it may determine that the light is from the speed measuring device 30. When the light is other than this, the control unit 11 of the electronic device 10 may determine that the light is not from the speed measuring device 30.

[0256] (11-25) The control unit 11 of the electronic device 10 may determine that the speed measuring device 30 is present when light is received whose amount of light changes periodically (for example, swept horizontally (left and right)) at a predetermined time interval (for example, about several tens to several hundreds of ms). The control unit 11 may not determine that the speed measuring device 30 is present when light other than this is received.

[0257] In the configurations of (11-26) (11-24) to (11-25), the control unit 11 may determine, based on light received at a plurality of timings, that the speed measurement device 30 exists. For example, when the control unit 11 determines, based on light received at a plurality of predetermined timings, that the speed measurement device 30 exists, the speed measurement device 30 finally exists.

[0258] (11-27) An electronic device for a vehicle (e.g., an alarm device) that has an antenna unit and a display unit in separate housings, the antenna unit is electrically connected to the display unit, and the display unit performs a predetermined notification control (e.g., an alarm) based on a signal received by the antenna unit, the light receiving unit is provided in the housing of the antenna unit, or in a housing separate from the housing of the antenna unit and the housing of the display unit, and the display unit may have a function of performing a notification (e.g., an alarm) regarding optical vehicle speed measurement based on a signal regarding the light receiving state of the light receiving unit from the housing including 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 is preferably 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 measurement device 30.

[0259] The housing of the antenna unit including the light receiving unit of (11-28) and (11-27) or the separate housing including the light receiving unit may be provided with a security function of blinking a light emitting body (e.g., an LED) (e.g., a dummy) while the vehicle is stopped. The light emitting body may be provided on the top surface of the housing, and the light receiving unit may be provided on the back side.

[0260] The "electrical connection" in (11-29) and (11-27) may be made by wire, and a relay unit having another housing may be provided between the antenna unit and the display unit, and the relay unit may have the function of supplying power to the electronic circuit in the housing having the light receiving unit and relaying the signal from the electronic circuit in the housing having the light receiving unit to the display unit.

[0261] (11-30) In a configuration including an antenna for a GPS receiving unit (i.e., a "GPS antenna"), an antenna for a microwave receiving unit, and an optical receiving unit, it is preferable that the GPS antenna be disposed at the top of these.

[0262] (11-31) In a configuration including a GPS antenna, an antenna of a microwave receiving unit, and a light receiving unit, it is preferable that the antenna of the microwave receiving unit and the light receiving unit are positioned further forward in the direction of travel than the GPS antenna.

[0263] (11-32) In a configuration including an antenna and a light receiving unit of a microwave receiving unit, it is preferable that the two are arranged side by side in the left-right direction. In this case, it is preferable that they do not overlap in the up-down direction.

[0264] (11-33) In a configuration including an antenna of a microwave receiving unit and a light receiving unit, it is preferable that the light receiving unit be disposed at a position above the antenna of the microwave receiving unit.

[0265] (11-34) The electronic circuit of the housing having the light receiving unit may be connected to a drive recorder, and the drive recorder may be provided with a function of recording an image when the light receiving unit receives light from the speed measuring device 30. The display unit may be provided with a function of playing back the recorded image when the light receiving unit receives light from the speed measuring device 30. The image may be, for example, an image of a predetermined period of recorded image.

[0266] (11-35) It is preferable that the electronic device has a configuration in which light is received using a light guide tube such as an optical fiber or other light guide member. For example, there are cases in which the GPS antenna, the microwave receiving antenna, and the light receiving unit cannot be placed in ideal positions.

[0267] (11-36) FIG. 70(a) is a diagram showing an example of such a configuration. In this example, inside a housing 1051, on a board 1052, an antenna 1053 of a microwave receiving unit is arranged on the front side in the traveling direction of the vehicle, and a light receiving unit 12 is arranged on the rear side of the antenna 1053. A GPS antenna 1054 is arranged at a position overlapping the light receiving unit 12 in the vertical direction. A light guiding member 1055 is arranged on one side as seen from the antenna 1053 with respect to the traveling direction of the vehicle. Light incident on an end face of the light guiding member 1055 on the vehicle front side is guided to an end face on the opposite side. The light receiving unit 12 faces the end face on the opposite side. The light receiving unit 12 receives light emitted from the end face on the opposite side. Note that the light guiding member 1055 may be arranged so that light from the front side in the traveling direction of the vehicle can be incident thereon, and the arrangement of each member is not limited to the example described in FIG. 70(a). Also, FIG. 70(b) is a diagram showing this electronic device from above. As shown in FIG. 70(b), if the light-guiding member 1055 is arranged to be rotatable around a shaft 1056 on the rear side, the attachment problem can be improved.

[0268] In the above explanation, taking into account the light received from the speed measuring device located on the left side, the locations where the components are positioned on the left side may also be interpreted as being positioned on the right side, since there is a possibility that light reflected from the central reservation strip, etc. may arrive.

[0269] (11-36) The light receiving sensitivity of the light receiving section of the member functioning as a visible light cut filter, as exemplified by the cover parts 1003 and 803, changes depending on the surface condition. For example, the surface of the member may be textured (relatively rough), but it may also be smoother (shinier and less rough) (e.g., polished), in which case improvement in light receiving sensitivity can be expected. In the case of a textured surface, light is diffused on the surface. It is considered that this effect makes it easier to obtain sensitivity even if the light receiving direction is shifted horizontally. On the other hand, the inventors thought that if the surface is polished, the light does not diffuse when passing through the member functioning as the visible light cut filter, and the amount of light that reaches the light receiving section increases, thereby increasing the sensitivity. Figure 71 is a diagram showing the difference between having and not having textured processing.

[0270] In the case of embossing, for example, it is preferable that the design is not impaired. For example, it may be desirable that the inside of the housing is not visible from the outside. If the periphery of the member functioning as the visible light cut filter is patterned, such as embossed, the member portion functioning as the visible light cut filter should also have a similar pattern. The color of this portion as seen from the outside should be the same color as the housing and should allow the light to be detected to pass through.

[0271] (11-37) The control unit 11 of the electronic device 10 may use a camera capable of capturing images in the infrared region to perform warning control when an image corresponding to the light from the speed measuring device 30 is detected within the captured image area. The image corresponding to this light may be a flashing light (for example, an area with 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 corresponds 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 roadway and to the side of the travel lane (side strip position) by image recognition and determine whether a flashing light is present at that position.

[0272] (11-38) Although the visible light cut filter may be provided separately so that the light passes through the lens after the visible light cut filter, it is preferable to make the lens itself out of a material that cuts visible light, and not provide a separate visible light cut filter on the surface of the housing.

[0273] (11-39) It is preferable that an adjustment means is provided that can adjust the orientation of the portion where the incident part is provided (the protruding portion described above). The adjustment means may be configured to change the orientation of the portion where the incident part is provided when a force from a human hand is applied, and not change the orientation of the portion where the incident part is provided when a force from a human hand is not applied. The adjustment means may be configured to change up, down, left, and right, but it is preferable that the orientation can be adjusted at least in the left and right directions. In particular, a display unit is provided on the front side of the housing, and the adjustment means and the incident part are provided on the rear side of the housing, which has an excellent effect. In particular, when the display unit is installed on the right side of the dashboard in front of the driver's seat, the left side is oriented forward so that the display screen of the display unit is easy to see. In this case, the light receiving unit faces the right front, making it difficult to receive light from the speed measuring device 30, which is often emitted from the left front of the roadside strip, etc., but by doing this, the light receiving unit can be oriented in that direction, in the direction of light from the speed measuring device 30, which is often emitted from the left front of the roadside strip, etc.

[0274] (11-40) It is preferable to have a function of transmitting information about a location where monitoring activity by the speed measurement device 30 was conducted to a server or another vehicle based on an instruction from a user or on reception of light from the speed measurement device 30. At this time, it is preferable to have a function of transmitting monitoring type information indicating that the location was a location where monitoring activity by light from the speed measurement device 30 was conducted, in addition to information about the location (for example, current location information from GPS).

[0275] It is also preferable to have a function of transmitting information that can distinguish whether the posting of the location where the monitoring activity was performed by the speed measurement device 30 from the user's posting or the automatic posting due to the reception of light from the speed measurement device 30. It is also preferable to have a function of receiving information on the location where the monitoring activity was performed by the speed measurement device 30 posted to the server, and a function of notifying the user that the location where the monitoring activity was performed by the posted speed measurement device 30 when the user's vehicle approaches the received location. At this time, it is preferable to receive information that can distinguish whether the posting of the location where the monitoring activity was performed by the speed measurement device 30 from the user's posting or the automatic posting due to the reception of light from the speed measurement device 30, and to notify the user that the posting of the location where the monitoring activity was performed by the speed measurement device 30 from the user's posting or the automatic posting due to the reception of light from the speed measurement device 30. It is preferable to consider the "approach of the vehicle to the received location" as approaching at a distance longer than the detectable distance of the laser light. For example, if the detectable distance of normal laser light is 500 m, it is preferable to determine the approach of the vehicle to the received location as 800 m.

[0276] For example, it is preferable to have a function of issuing a notification to inquire of the user whether or not monitoring activity by the speed measuring device 30 was conducted after passing a point where a posted monitoring activity by the speed measuring device 30 was conducted, detecting the user's voice or hand operation in response to the notification, and transmitting information on whether or not monitoring activity by the speed measuring device 30 was conducted at the point where the posted monitoring activity by the laser speed measuring device was conducted to the server. It is preferable to have a function of acquiring this information from the server, and adding information on whether or not monitoring activity by the speed measuring device 30 was conducted for anything approaching the point, or not issuing a notification at all.

[0277] Instead of or in addition to transmitting the information to a server (for example, transmitting the information to a server connected to the Internet via a wireless LAN and an LTE wireless LAN router), the information may be broadcast to the surroundings via radio waves, or the information may be communicated with other radar detectors in the vicinity. The information may also be relayed between radar detectors in each vehicle using P2P or the like.

[0278] Regarding (11-41) and (11-40), the idea of ​​automatically posting and sharing data on the location of receiving light from the speed measuring device 30 or the location of receiving radar-type radio waves is considered to be a function that cannot be fully utilized unless there is accurate registration of reception without erroneous recognition and a large number of users who utilize the network. Therefore, a system for posting to an SNS (Social Network System) may be used, and under the idea that if many users can see the data, this can ultimately lead to appealing the electronic device 10 or its provider (company), and thus increasing purchasing power, the following configuration may be used. The SNS may be, for example, Twitter (registered trademark), Instagram (registered trademark), or other SNS.

[0279] When the control unit 11 of the electronic device 10 starts receiving pulsed light corresponding to the optical method or radio waves corresponding to the radar method, the control unit 11 acquires an image captured by an in-vehicle camera (for example, the in-vehicle camera 50) and starts image recognition processing of the acquired captured image. This image recognition processing is processing for recognizing an image of a speed measurement device included in the captured image. The algorithm for the image recognition processing may be performed using a known image recognition processing. For example, image data showing images of the optical method and the radar method speed measurement device are stored in advance in the storage unit 18. The control unit 11 performs image recognition processing using this image data, for example, by a pattern patching method. Here, the control unit 11 may narrow down the image data used for the image recognition processing according to the form of receiving the pulsed light or the form of receiving the radio waves. For example, when the control unit 11 receives pulsed light, the control unit 11 may narrow down the image data to be used for the image recognition processing to the image data of the optical method speed measurement device stored in the storage unit 18, and when the control unit 11 receives radio waves, the control unit 11 may narrow down the image data to be used for the image recognition processing to the image data of the radar method speed measurement device stored in the storage unit 18. The control unit 11 compares the image captured by the in-vehicle camera 50 with the image indicated by the narrowed-down image data, and judges whether or not a speed measuring device has been captured based on a value indicating the degree of similarity (here, a score value). For example, the score value indicating the degree of similarity indicates a larger value as the degree of similarity increases. The score value is calculated by a known algorithm. For example, when the score value is equal to or greater than a threshold value, the control unit 11 judges that a speed measuring device is present, and performs a posting process. For example, when the score value is less than a threshold value, the control unit 11 judges that a speed measuring device is not present, and does not perform a posting process. Note that, if the vehicle is not equipped with a camera for image recognition such as the in-vehicle camera 50, the control unit 11 judges whether or not there is related public enforcement information or enforcement PoI (Point of Interest, i.e., enforcement point) when reception of pulsed light or radio wave is started. If the control unit 11 judges that there is either of these, it performs a posting process, and if it judges that there is not, it does not perform a posting process.

[0280] The control unit 11 performs a posting process to post information such as location information indicating the location of the speed measuring device to the server via the communication unit 17. The control unit 11 generates data in a predetermined format such as CSV (Comma-Separated Values), including, for example, latitude and longitude as location information indicating the location of the speed measuring device, date and time, the type of electronic device 10 (for example, manufacturer name, model or model number), the name of the road on which the device is traveling, the address of the current location, and a comment for SNS, and uploads the data to the server. The comment for SNS is, for example, a compilation of the date and time, the type of electronic device 10, the name of the road on which the device is traveling, the address of the current location, and the like. The server may store the data, for example, sorted by date and time, in order to make the data sent from the electronic device 10 easier to handle. The server automatically posts the data to the SNS. The server may perform the posting process while devising a number of likes (the number of so-called "likes") for the posted content in order to gain followers. The caption and comment are comments for SNS.

[0281] The control unit 11 of the electronic device 10 periodically monitors the server, and if the latest data has been updated, downloads the posted data and displays it on the map or as a caption. This display can be set to on / off, and only the latest information can be displayed for those who want to see the information. Here, for example, "I'm in Wakkanai, Hokkaido, but on the map there is an icon and a caption: Portable speed camera enforcement on National Route 238!" is displayed and output.

[0282] Regarding the configurations of (11-42) and (11-41), the control unit 11 may continue to perform control to notify the presence of the speed measurement device 30 when the reception of the pulsed light is interrupted after the reception of the pulsed light or when a preceding vehicle is recognized from an image of the in-vehicle camera 50. In this way, the presence of the speed measurement device 30 can be notified even if the pulsed light from the speed measurement device 30 is blocked by the preceding vehicle.

[0283] (11-43) Regarding the configuration of (11-41), when the intensity of the received pulsed light is suddenly no longer detected after being higher than a predetermined level (for example, when passing the position of the speed measuring device), the control unit 11 may upload to the server, together with the location information, an image (for example, a photo) taken just before the detection was lost (for example, just before passing the position of the speed measuring device). In this way, the server side can judge whether the alarm is a false alarm or a real alarm by looking at the image. It is even better to upload the image taken by the rear camera to the server after the detection is lost (for example, after passing). The control unit 11 may cause another vehicle device (electronic device 10 or on-board camera) to take an image of the position of the speed measuring device and automatically upload it. In this case, the electronic device 10 may distribute information on the position of the speed measuring device to models that do not have a function for receiving pulsed light, and cause them to take an image and upload it. Image information such as the time when enforcement will be stopped can be collected from many existing electronic devices. In this case, models that have a function for receiving pulsed light may also upload the laser reception level.

[0284] (11-44) The control unit 11 may post on SNS, "I was saved by XX's radar~" (XX is the name of the manufacturer) by putting the logo or letters of the manufacturer of the electronic device 10 in the image of (11-43) or in the description. 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 if it 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. For example, the control unit 11 posts, "I passed a laser speed camera near △△, which has a speed limit of 60 km, at 55 km / h. I was saved by XX's radar~". The image may be a screenshot of the screen of the electronic device 10 itself. In particular, it may be a display screen itself in which an image related to the notification of the electronic device 10 is superimposed on an image captured by a drive recorder. In this case, it is advisable to use an image that imitates the outer frame of the radar screen (where the model name and function names are written) on the outside of the display screen (i.e., an image of the display area of ​​the casing when the electronic device 10 is viewed from the front).

[0285] (11-45) The electronic device 10 may upload the location where the notification by the cancel function corresponding to the radar system was canceled to the server via the network and share it. In this way, it is possible to prevent false notifications from being made from the beginning even for automatic doors or the like near roads where other users are driving for the first time.

[0286] (11-46) Radar detectors may react to vending machines. Therefore, when the electronic device receives a specific radio wave (radar wave) while parking, it displays a message saying "Is there a vending machine nearby?" along with buttons saying "Yes" and "No" and accepts posts. The electronic device sends the posted data to a server. The server may tally up the posted data and distribute it as vending machine points or the like as a source of false alarms.

[0287] (11-47) By connecting the electronic device 10 to a drive recorder that supports intercommunication, it is possible to supply power to the drive recorder, and to communicate video / audio signals, operation signals, GPS information, and OBDII information. Furthermore, it is equipped with a linkage mode that automatically switches to external input display when approaching a speed measurement device. When approaching a speed measurement device, the position of the camera of the speed measurement device (for example, three fixed patterns: up / left / right) is highlighted in red to notify the user. The speed warning point warning alerts users to points where the maximum speed changes, where there is a high possibility of enforcement. In addition, it is equipped with a normal image / mirror image switching function, so the drive recorder can also be used as a backup camera.

[0288] [12. Other embodiments] Regarding the configuration in which the above-mentioned lenses or mirrors are combined to widen the light receiving angle of the light receiving element, for example, the following configuration is adopted. FIG. 72 is a diagram showing the configuration of the electronic device 10A of this embodiment as viewed from the upper right diagonal direction on the rear side. FIG. 73 is a six-sided view showing an example of the external configuration of the electronic device 10A of this embodiment. FIG. 73 shows a front view, a top view, a right side view, a bottom view, a left side view, and a back view of the electronic device 10A. Hereinafter, the same elements as those explained in [7. Mechanism of the electronic device 10] are represented by the same reference numerals as those used in [7. Mechanism of the electronic device 10], and the explanation will be omitted as appropriate.

[0289] 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. The display unit 13, the light emitting unit 23, and the illuminance sensor 201 of the sensor unit 20 are provided on the front side of the first housing 1001. The display area of ​​the display unit 13 is located in the opening on the front side of the first housing 1001. A speaker 14 is provided to output sound from the upper end surface of the second housing 1002A. The right end surface of the housing 100A is provided with an attachment unit 21 (i.e., an SD card slot) for attaching an SD card. A condensing lens 300 is provided in the upper right part of the back of the housing 100A. The power switch 221 and DC jack 222 of the power supply unit 22 are provided in the lower left part of the back of the housing 100A.

[0290] A lens holder 1006 is provided on the rear surface of the second housing 1002A. The lens holder 1006 constitutes a window that is an opening that allows communication between the inside and outside of the housing 100A. When viewed from the rear surface side of the housing 100A, the lens holder 1006 has an elliptical shape with a major axis in the horizontal direction and a minor axis in the vertical direction. When the electronic device 10A is installed in a vehicle, the horizontal direction corresponds to the width direction of the vehicle, and the vertical direction corresponds to the height direction of the vehicle.

[0291] The condensing lens 300 is fitted into the lens holder 1006. The condensing lens 300 is a part of the light receiving unit 400, and is provided at a position corresponding to the light entrance portion described in the above-mentioned embodiment. The lens holder 1006 and the condensing lens 300 are provided at a position toward the upper right of the second housing 1002A when viewed from the back of the second housing 1002A. For example, the condensing lens 300 is arranged so as to be located at least above the center in the vertical direction on the back of the housing 100A 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 vehicle. This is because it may be easier to receive light from the speed measurement device 30 if the condensing lens 30 is located relatively higher on the back of the second housing 1002A and is located on the side of the road shoulder where the speed measurement device 30 is likely to be located. The pulsed light Lout from the speed measurement device 30 is introduced into the inside of the housing 100A through the lens holder 1006 and the condensing lens 300. The entire condenser lens 300 is formed using a material that transmits light. The condenser lens 300 is transparent or translucent. The condenser lens 300 has an aspherical light incidence surface, which protrudes further rearward than the rear 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 the pulsed light Lout, and is a translucent or transparent member. This may contribute to the attractive design of the electronic device 10A.

[0292] Fig. 74 is a diagram showing a state in which second housing 1002A has been removed from electronic device 10A. Fig. 75 is a diagram showing a state in which condenser lens 300 has been further removed from electronic device 10A. Fig. 76 is a diagram showing a state in which filter 250 and shield plate 270 have been further removed from electronic device 10A.

[0293] 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 to condense the pulsed light Lout at a predetermined focal distance position. The light receiving element 410 receives the light condensed by the condenser lens 300. The light receiving element 410 is provided on a surface side of the second substrate 1030 facing one surface on the condenser lens 300 side, on the side where the first substrate 1010 is arranged in this embodiment. Therefore, the light receiving element 410 receives light that has passed through a light transmitting portion 1033 provided on the second substrate 1030. The light transmitting 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 differs from the above-mentioned embodiment in that there is only one light receiving element.

[0294] The filter 250 is an example of a wavelength selection section corresponding to the first wavelength selection section 121. The filter 250 is provided between the light receiving element 410 and the condenser lens 300, and selects light of a specific wavelength λout from the incident light and transmits it. The filter 250 may be of any configuration and may be removed. The shield plate 270 is a shield made of, for example, aluminum or a conductive material, and is provided in an area surrounding three of the four sides of the light transmitting section 1011. The shield plate 270 is intended to suppress the effects of static electricity and the like on the light receiving element 410 and other electronic components.

[0295] Fig. 77 is a diagram of Fig. 76 with second substrate 1030 omitted. Light receiving element 410 is housed in shield case 280. Shield case 280 is provided on one surface of first substrate 1010 facing condenser lens 300, and covers entire light receiving element 410. Such shield case 280 performs the same function as shield case 1031.

[0296] In this way, the light receiving element 410 is disposed on the surface of the second substrate 1030 that faces the front of the electronic device 10A. In this way, the shielding can be achieved more reliably by a simple method, and since the first substrate 1010 is present between the light receiving element 410 and the condenser lens 300, the space corresponding to the focal length can be effectively utilized. As a result, this also contributes to realizing a compact housing 100 as a whole. Note that the same effect can be expected by disposing the light receiving element 410 on the surface of the first substrate 1010 that faces the front or rear of the electronic device 10A.

[0297] FIG. 78 is a six-sided view showing an example of the configuration of the condenser lens 300. The condenser lens 300 is an aspherical lens that condenses the reflected light from the speed measurement device 30 and forms an image at a predetermined condensing position. The condenser lens 300 is an aspherical lens in which the light incidence surface is aspherical. The condenser lens 300 includes an incidence surface 310 and an emission surface 320. The incidence surface 310 includes an aspherical curved surface 311 into which the pulsed light from the speed measurement device 30 is incident. The incidence surface 310 includes a curved surface 311 that is convex along the width direction of the vehicle. The curved surface 311 protrudes most at the center in the width direction of the vehicle. The curved surface 311 also protrudes most at the center in the height direction of the vehicle. The curved surface 311 is, for example, parabolic in shape, but may have any other shape as long as it is a surface consisting of a smooth curve.

[0298] The length La of the curved surface 311 in the width direction of the vehicle is greater than the length Lb in the height direction. The curvature of the curve of the condenser lens 300 in the width direction of the vehicle is smaller than the curvature of the curve in the height direction of the vehicle. In this way, the condenser lens 300 curves more gently in the width direction of the vehicle than in the height direction of the vehicle.

[0299] Exit surface 312 is a surface from which light incident on entrance surface 310 (particularly curved surface 311) exits. Exit surface 312 is a flat surface. However, exit surface 312 may be curved.

[0300] The condenser lens 300 guides the pulsed light from the speed measurement device 30 to the position of the light receiving element 410. The position of the condenser lens 300 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.

[0301] A flat surface 313 is provided around the curved surface 311 of the incident surface 310. Legs 314A, 314B are provided on a pair of opposing sides of the flat surface 313. The legs 314A, 314B are fixed to the first substrate 1010. Note that the flat surface 313 and the legs 314A, 314B are not essential components.

[0302] Since the focusing lens 300 having the above configuration is an aspheric lens, spherical aberration can be suppressed when forming an image on the light receiving element 410, compared to when a spherical lens is used. The spot size obtained with an aspheric lens can be several orders of magnitude smaller than that of a spherical lens. Based on this concept, it is considered that the focusing lens may be realized by combining multiple lenses that have smaller spherical aberration than a spherical lens.

[0303] When the speed measurement device 30 is located on the road shoulder, the pulsed light Lout is incident from almost the front side when the distance between the speed measurement device 30 and the vehicle is large, but as the speed measurement device 30 approaches, the pulsed light Lout is incident from the left side. For this reason, the horizontal length La of the condensing lens 300 is made larger than Lb so that the condensing lens 300 can receive light at a wider acceptance angle in the width direction of the vehicle than in the height direction of the vehicle. For example, the condensing lens 300 can collect light incident at an incidence angle of 40 degrees on both sides in the width direction and 20 degrees on both sides in the height direction. By relatively shortening the height direction length Lb of the curved surface 311, the concentration of light other than the pulsed light Lout is reduced. If the purpose is to receive a wide range of incidence angles in the width direction of the vehicle, the curved surface 311 may be flat along the height direction of the vehicle.

[0304] The light receiving element 410 is preferably arranged at a position shorter than the focal length of the condenser lens 300, rather than arranged at the focal length. Since the condenser lens 300 has a small curvature and bends light significantly, light around the condenser lens 300 tends to gather near the center of the optical axis in front of the focal length. By arranging the light receiving element 410 in front of the focal length, more light can be collected. Also, light coming from a direction with a steep angle passes near the center of the optical axis in front of the focal length. By placing the light receiving element 410 in front, light with a wide angle of incidence can be received.

[0305] The condenser lens 300 has a characteristic that allows it to detect the pulsed light from the speed measuring device 30 even if it is weak. This allows the electronic device 10 to detect the presence of the speed measuring device 30 over an extremely wide range and long distance, and to promptly report the presence. As in 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 formed of a material having a visible light cut function. This reduces the influence of visible light. The condenser lens 300 may be what is called an aspheric lens.

[0306] The condenser lens 300 may be disposed so that its optical axis is parallel to the longitudinal direction of the vehicle, or 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 longitudinal direction of the vehicle, the pulsed light Lout from the speed measurement device 30 may be more easily received.

[0307] 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 shaved down to a thickness of 3 mm and polished. A photodiode (PD) was used as the light receiving element. The focal length was 3 mm at back focus, and the lens was placed 1 mm above the light receiving element to widen the upper angle of view. Fig. 79(b) is a table showing the relationship between the light source direction [deg] and the ATT value [db] in this case. It was confirmed that the curved horizontal acceptance angle was larger than the vertical acceptance angle.

[0308] FIG. 80 is a diagram showing an example of an 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 a high potential power line, and the anode of the light receiving element 410 is connected to one end of a 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 to the rear stage of the amplifier AMP1. The value of N is arbitrary. However, it is desirable that the amplifiers AMP1 to AMPN are designed to amplify a signal in a wavelength region of a specific wavelength λout. The output end of AMPN is connected to one input terminal (here, the positive input terminal) of the differential amplifier 430, and a signal SIGN is input. A threshold level Thn is input to the other input terminal (here, the negative input terminal) of the differential amplifier 430. The differential amplifier 430 functions as a comparator that outputs a signal according to the difference between the signal SIGN and a threshold level Thn. The differential amplifier 430 outputs a signal of positive potential when the signal SIGN exceeds the threshold level Thn, and outputs a signal of negative potential when the signal SIGN is equal to or lower than the threshold level Thn. The control unit 11 detects the presence of the speed measurement device 30 based on the difference between the signal SIGN and the threshold level Thn.

[0309] The control unit 11 may detect the presence of the speed measuring device 30 in the same manner as in the above embodiment. For example, when the wavelength of the pulsed light is 905 nm, the control unit 11 may perform control to notify the presence of the speed measuring device 30 when a pulsed light with a pulse interval of 80 ms (or a range of less than 80 ms or more than 80 ms within a certain range from the reference pulse interval) is received. Alternatively, the control unit 11 may perform control to notify the presence of the speed measuring device 30 when a pulsed light with a pulse width (light emission time) of 20 ms (or a range of less than 20 ms or more than 20 ms within a certain range from the reference pulse width) is received. The control unit 11 may notify the presence of the speed measuring device 30 when a pulsed light of a specific wavelength λout is received at least once. In this way, when there is a possibility that the speed measuring device 30 exists, its existence can be promptly notified to the user, so that the user can recognize it.

[0310] [13. Modifications of [12. 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 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 toward the light receiving element 410. The reflecting unit 500 has a portion that surrounds the optical path, and is preferably formed in a cylindrical shape that surrounds the optical path over its entire circumference so as to increase the reflectance. The diameter of the reflecting unit 500 becomes smaller as it approaches the light receiving element 410. In this way, the amount of light received by the light receiving element 410 from the speed measuring device 30 increases, so that the presence of the speed measuring device 30 can be more reliably notified.

[0311] For example, the reflector 500 may be arranged such that a mirror reflection sheet is bent vertically in a semi-cylindrical shape on the substrate surface side with the light receiving element 410 facing inward. For example, the space between the incident portion and the light receiving element 410 may be formed into a cylinder, and the inside of the cylinder may be a mirror surface (or a scattering surface).

[0312] (13-2) As shown in FIG. 82, the electronic device 10A may have a reflecting section 600. The reflecting section 600 is provided on the optical path from the condenser lens 300 to the light receiving element 410. The reflecting section 600 reflects at least a part of the light emitted from the exit surface 320 toward the light receiving element 410 by utilizing total reflection of the light. The reflecting section 600 may be a medium having a shape of a column, a square column, a cone, or a pyramid provided between the condenser lens 300 and the light receiving element 410, and may be a member having a function of reflecting light, such as infrared-transmitting resin, glass, or optical fiber. The reflecting section 600 may be made of a material that transmits light of a specific wavelength. The reflecting section 600 may be realized by utilizing total reflection at or above a critical angle. For total reflection at the critical angle, the shape of the side of the reflecting section 500 may be flat, but may be made to have a non-flat shape such as a jagged shape. It is also possible to direct the light going out from the condenser lens 300 inward. In this way, the amount of light received by the light receiving element 410 from the speed measurement device 30 increases, so that the presence of the speed measurement device 30 can be notified more reliably.

[0313] (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 light is properly incident on the light receiving element 410 even when the main body screen is tilted so that the upper side of the screen is positioned further back to make it easier to see the screen.

[0314] This configuration is related to "widening the upper angle of view" described in Fig. 79. In short, the sensitivity to pulsed light is higher from above than from below in the vertical direction. When such a configuration is adopted in electronic device 10A, if display unit 13 (main body screen) is installed diagonally upward so that it can be easily seen from the driver's car, the upper part with good sensitivity (i.e. the part above the center in the vertical direction) will be closer to horizontal, making it easier to receive pulsed light Lout.

[0315] (13-4) As shown in FIG. 83, a collision warning system 700 that emits light toward the windshield 42 of a vehicle may be provided. The collision warning system 700 is disposed, for example, on the windshield 42 or its periphery. The collision warning system 700 emits light L1 of a predetermined wavelength toward the front of the vehicle and receives the reflected light, thereby detecting the presence of an object ahead (e.g., another vehicle or a building such as a wall) and the distance to the object, and notifying the user. When the collision warning system 700 is operating, there is a possibility that disturbance light L2 including a reflected wave from the object ahead or the windshield is received by the electronic device 10A. In this case, depending on the wavelength of the disturbance light L2, the light of the collision warning system 700 may be mistaken for pulsed light Lout.

[0316] FIG. 84 is a graph showing an example of a temporal change in the level of light received by the light receiving unit 400. In FIG. 84, a case is shown in which a vehicle is approaching the speed measurement 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 below the threshold level Th1 and the level of the pulsed light Lout is above it, so there is no problem in detecting the pulsed light Lout. However, when the threshold level Thn is set to Th2, both the level of the disturbance light L2 and the level of the pulsed light Lout are above the threshold level Th2. In this case, even if an attempt is made to detect the speed measurement device 30 based on the pulse interval, it will not be possible to detect it. It is sufficient to set the threshold level Thn optimally, but since the light level of the collision warning system 700 differs depending on the vehicle model and type, it may be difficult to set it. Therefore, the control unit 11 performs control to notify the presence of the speed measuring device 30 when the level of the received light of the specific wavelength is equal to or higher than a threshold level, and also performs control to change the threshold level.

[0317] 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 that of FIG. 80. One end of each of resistors R41, R42, and R43 is connected to three terminals of the control unit 11. The other ends of the resistors R41, R42, and R43 are connected to a power supply line Vcc that applies a fixed voltage via a resistor 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 respectively connected. The threshold level Thi changes depending on the signal level. Here, the threshold level Thi is adjusted by a 3-bit signal, so that the threshold level Thi can take eight different levels. The level of the threshold level Thi changes depending on the signal level. Here, the threshold level is the smallest in the case of "000", and increases in the order of Th1, Th2, . . . , Th8 for "001", "010", . . . , and "111".

[0318] During a predetermined period such as when 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, the control unit 11 judges that disturbance light exists because the disturbance light L2 is repeatedly received at a high cycle. In this case, the control unit 11 raises the threshold level to Th2. Here, the control unit 11 does not optimize the threshold level Th2 because the disturbance light L2 is repeatedly received at a high cycle. In this case, the control unit 11 judges that disturbance light exists and raises the threshold level to Th3. Then, the control unit 11 judges whether or not the disturbance light L2 is repeatedly received at a high cycle. In this case, the control unit 11 optimizes the threshold level because the disturbance light L2 is not repeatedly received at a high cycle. If the disturbance light L2 is repeatedly received at a high cycle even if the threshold level is raised to Th3, the control unit 11 raises the threshold level to Th4. The subsequent control is the same.

[0319] When the control unit 11 sets the threshold level, it adjusts it at a predetermined timing. This timing is, for example, at every predetermined interval. At the adjustment timing, the control unit 11 lowers the set threshold level Thi by one step to Thi-1. Then, when the control unit 11 repeatedly receives the disturbance light L2 at a high cycle, it raises the threshold level Thi-1 by one step and resets it to the threshold level Thi. When the control unit 11 does not repeatedly receive the disturbance light L2 at a high cycle, it further lowers the threshold level by one step to Thi-2. When the control unit 11 repeatedly receives the disturbance light L2 at a high cycle, it raises the threshold level Thi-2 by one step and returns it to Thi-1 and sets it to this threshold level. When the control unit 11 does not repeatedly receive the disturbance light L2 at a high cycle, it further lowers the threshold level to Th-3. The subsequent controls are similar. In this way, the threshold level can be constantly optimized. Since the circuit includes noise due to amplifier input noise, etc., it is preferable to set resistors R41 to R44 so that threshold level Th1 exceeds the level of this noise NS. Moreover, threshold levels Th1 to Th8 do not need to be spaced at equal intervals, and the intervals may be larger as the levels are higher, or may be smaller near the lower and upper limits and larger near the middle. Moreover, the number of threshold level steps (number of resistors) is not limited to this, and may be less than eight steps or more than eight steps. Moreover, the configuration for making threshold level Thi variable may be other than the above.

[0320] FIG. 87 is a diagram showing an example of a modified electrical configuration of the light receiving unit 400. As described above, when the control unit 11 varies the threshold, a period in which light is repeatedly received at a high frequency occurs at a certain frequency, and at this time, the reception of the pulsed light Lout cannot be normally determined. Therefore, as shown in FIG. 87, a signal SIGN may be input to one input terminal (here, the positive input terminal) of the differential amplifier 440, and a threshold level Thi+1 may be input to the other input terminal (here, the negative input terminal) of the differential amplifier 430 at the output end of the amplifier AMPN. The threshold level Thi+1 may be defined in the same manner as the threshold level Thi. 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 does not change the threshold level during this period. Then, the control unit 11 raises the threshold level when both are low, and lowers the threshold level when both are high. It should be noted that the system can also cope with light from other devices and other disturbance light, not limited to the collision warning system 700. Disturbance light that can be dealt with includes infrared light from a remote controller, laser light from a road surveying instrument, etc., laser light from an automatic brake emitted from another vehicle, and sunlight, and for example, a filter provided in the light receiving unit prevents infrared light from a remote controller and laser light from a road surveying instrument, etc. from being mistaken for pulse light from a speed measuring device, and a function of the control unit prevents laser light from an automatic brake emitted from another vehicle and sunlight from being mistaken for pulse light from a speed measuring device.

[0321] [14. Other examples of electronic devices] Fig. 88 is a diagram showing the external configuration of electronic device 80A in which the configuration described in [12. Other embodiments] is adopted for electronic device 80 described in Fig. 62. Fig. 89 and Fig. 90 are six-sided views showing an example of the external configuration of 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 electronic device 80A. Fig. 90 shows a rear view of electronic device 80A. A condenser lens 300 is provided on the rear side of electronic device 80A.

[0322] 91, 92, and 93 are diagrams showing the internal configuration of the electronic device 80A. The electronic device 80A is different from the electronic device 80 in that the light receiving element 843 is formed on the fourth substrate 840 so as to receive 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 facing one surface on the condenser lens 300 side. Therefore, the light receiving element 843 receives light that has passed through the light transmitting portion 842 provided on the fourth substrate 840. The light transmitting portion 842 is a rectangular parallelepiped opening here. The filter 870 performs the same function as the filter 250. The shield plate 880 performs the same function as the shield plate 270. The light receiving element 843 is housed in the shield case 890. The shield case 890 performs the same function as the shield case 280. The electronic device 80A can also obtain the same effect as the electronic device 10A.

[0323] [15. Other embodiments] Regarding a configuration in which a lens or a mirror is combined to widen the light receiving angle of the light receiving element, for example, an electronic device having the following configuration may be provided. FIG. 94 is a diagram showing the external configuration of the electronic device 900 of this embodiment. FIG. 94(a) is a diagram showing the electronic device 900 viewed from the diagonally upper right direction on the front side of the electronic device 900. FIG. 94(b) is a diagram showing the electronic device 900 viewed from the diagonally upper right direction on the rear side of the electronic device 900. FIG. 95 is a six-sided diagram showing an example of the external configuration of the electronic device 900. FIG. 95 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 900.

[0324] The electronic device 900 has an external appearance of a rectangular parallelepiped that is longer in the width direction than in the vertical direction. The electronic device 900 has dimensions and weight that allow a user to easily carry it. For example, the electronic device 900 has a width (horizontal length) of 48 mm, a height (vertical length) of 34 mm, a depth of 13 mm, and a weight of 16 g. The housing 900A of the electronic device 900 is divided into a first housing 901 located on the front side and a second housing 902 located on the rear side. A light emitting unit 911, an operation unit 912, and a sound emitting unit 913A are provided on the front side of the first housing 901.

[0325] The light-emitting unit 911 emits a predetermined light. The light-emitting unit 911 includes, for example, a light-emitting diode. The light-emitting unit 911 emits light according to the operating state of the electronic device 900. The light-emitting unit 911 is provided at a position toward the lower right of the first housing 901 when viewed from the front side. The light-emitting unit 911 emits white light when the electronic device 900 is in a standby state. The light-emitting unit 911 emits blue light when the electronic device 900 is in operation. The light-emitting unit 911 emits red blinking light when the electronic device 900 receives the pulsed light Lout. Note that the relationship between the operating state and the light-emitting state is not limited to this, and various modifications are possible for the light-emitting mode, such as the light-emitting color and the timing of light emission (for example, the frequency and number of blinks).

[0326] The operation unit 912 accepts user operations. The operation unit 912 is provided in a position toward the lower right of the first housing 901 when viewed from the front side, and is located to the right of the light-emitting unit 911. Here, the operation unit 912 functions as a volume button. The operation unit 912 is operated by the user, for example, when adjusting the volume of an alarm sound or other sounds, or when muting an alarm sound that is emitted when the pulsed light Lout is received. Here, the operation unit 912 accepts a pressing operation, but may be an operation unit that accepts a sliding operation, a touch operation, or other operations.

[0327] Sound emitting unit 913A emits a predetermined sound. Sound emitting unit 913A has a plurality of holes provided at a position near the upper right of first housing 901 when viewed from the front. Sound emitting unit 913A outputs sound through the plurality of holes. Sound emitting unit 913A outputs an alarm sound or other sound.

[0328] A DC jack 914 that receives power input from a power source is provided on the left side surface of the housing 900A. For example, a cigarette lighter plug cord or a power cable is connected to the DC jack 914. A mounting portion 917 for mounting a first mounting member 940 and a second mounting member 950 described later is provided on the back surface of the second housing 902. In this manner, the mounting portion 917 is a mounting portion shared by the first mounting member 940 and the second mounting member 950. The mounting portion 917 is provided near the center in the width direction of the second housing 902 as viewed from the back surface side, near the lower end of the second housing 902. The mounting portion 917 has a pair of grooves 9171, 9172. The pair of grooves 9171, 9172 are provided at a predetermined interval in the width direction of the electronic device 900, and each extends in the up-down direction. The pair of grooves 9171, 9172 are detachably mountable to the first mounting member 940 and the second mounting member 950 described later. The first mounting member 940 and the second mounting member 950 may be further fixed to the second housing 902 using fasteners such as screws.

[0329] A lens holder 915 is provided on the rear surface of the second housing 902. The lens holder 915 constitutes a window that is an opening that allows the inside and outside of the housing 900A to communicate with each other. The lens holder 915 may have the same shape as the lens holder 1006 described above, and is an elliptical shape having a major axis in the width direction and a minor axis in the up-down direction when viewed from the rear surface side of the housing 900A. When the electronic device 900 is installed in a vehicle, the width direction corresponds to the width direction of the vehicle, and the up-down direction corresponds to the height direction of the vehicle. The second housing 902 is screwed to the first housing 901 using screws 918 and 919 at both ends in the width direction when viewed from the rear surface side.

[0330] The condensing lens 920 is fitted into the lens holder 915. The condensing lens 920 is a part of the light receiving unit 920A in the electronic device 900, and is provided at a position corresponding to the light entrance unit. The condensing lens 920 may have the same configuration as the condensing lens 300. The lens holder 915 and the condensing lens 920 are provided at a position toward the upper right of the second housing 902 when viewed from the back side of the second housing 902. For example, the condensing lens 920 is arranged so as to be located at least above the center in the vertical direction on the back side of the housing 900A 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 vehicle. This is because the condensing lens 920 may be more likely to receive light from the speed measurement device 30 if it is located relatively higher on the back side of the second housing 902 and on the side of the road shoulder where the speed measurement device 30 is likely to be located. The pulsed light Lout from the speed measuring device 30 is introduced into the housing 900A via a lens holder 915 and a condenser lens 920.

[0331] Fig. 96 is a diagram showing a state in which second housing 902 has been removed from electronic device 900. Fig. 97 is a diagram showing a state in which condenser lens 300 has also been removed from electronic device 900. Fig. 98 is a diagram showing a state in which first housing 901 has been removed from electronic device 900.

[0332] A substrate 930 is provided inside the housing 900A. The substrate 930 is a substantially rectangular shape that is longer in the width direction than in the vertical direction, and has substantially the same shape and dimensions as the front surface of the first housing 901 and the rear surface of the second housing 902. A light receiving unit 920A (condenser lens 920) is provided at a position on the substrate 930 toward the upper right when viewed from the rear surface side. The condenser lens 920 is designed and manufactured to condense the pulsed light Lout at a predetermined focal distance position. The light receiving element 931 receives the light condensed by the condenser lens 920. The electronic device 900 has a light receiving element 931 as one light receiving element. The light receiving element 931 may have the same configuration as the light receiving element 410. The light receiving element 931 is provided on the surface of the substrate 930 opposite to the surface on which the condenser lens 920 is present, which is the surface on the front surface of the electronic device 900 in this embodiment. Therefore, the light receiving element 931 receives light that has passed through the light transmitting portion 932 provided on the substrate 930. The light transmitting portion 932 is a rectangular parallelepiped opening here.

[0333] The filter 933 may have the same configuration as the filter 250, and is an example of a wavelength selection section corresponding to the first wavelength selection section 121. The filter 933 is provided between the light receiving element 931 and the condenser lens 920, and selects and transmits light of a specific wavelength λout from among the incident light. The filter 933 may have any configuration and may be removed. The shield plate 934 is a shield made of, for example, aluminum or a conductive material, and is provided in an area surrounding three of the four sides of the light transmitting section 932. The shield plate 934 is for suppressing the influence of static electricity and the like on the light receiving element 931 and other electronic components. The light receiving element 931 is accommodated in a shield case 935. The shield case 935 is provided on the surface of the board 930 opposite to the surface on which the condenser lens 920 is present, which is the front surface of the electronic device 900 in this embodiment, and covers the entire light receiving element 931. Such a shield case 936 performs the same function as the shield case 280.

[0334] In this manner, the light receiving element 931 is disposed on the surface of the substrate 930 that faces the front side of the electronic device 900. This allows for more reliable shielding using a simple method, and since the substrate 930 is present between the light receiving element 931 and the condenser lens 920, the space equivalent to the focal length can be effectively utilized. As a result, this also contributes to realizing a compact electronic device 900 as a whole.

[0335] The speaker 913 constitutes a part of the sound emitting unit 913A and outputs sound. The speaker 913, the operation unit 912, the DC jack 914, and the light receiving unit 920A (light receiving element 921) are electrically connected to the control unit 916. The control unit 916 controls each unit of the electronic device 90, and is, for example, a computer including an arithmetic processing circuit and a memory. The control unit 916 may be provided on the surface of the substrate 930 on which the condenser lens 920 is present, or on the opposite surface. The control unit 916 may perform a notification in response to reception of the pulsed light Lout in the same manner as the control unit 11 described in [12. Other embodiments] above. In addition, when the control unit 11 receives the pulsed light Lout, it causes the light emitting unit 911 to emit light in red or emits an alarm sound using the speaker 913. The control unit 916 controls the output of the alarm sound in response to the result of volume adjustment in response to the operation of the operation unit 912. The control unit 916 may perform controls other than the control of the display unit in the same manner as in the other embodiments described above.

[0336] The electronic device 900 configured as described above is attached to a vehicle by selectively using the first attachment member 940 and the second attachment member 950. The first attachment member 940 is a member for attaching the electronic device 900 to a dashboard, and is also called a dashboard attachment bracket. The second attachment member 950 is also called a suspended attachment stay.

[0337] Fig. 99 is a diagram showing a state in which the electronic device 900 is attached to a dashboard using a first attachment member 940. Fig. 99(a) is a diagram showing the electronic device 900 viewed from diagonally above right on the front side of the electronic device 900. Fig. 99(b) is a diagram showing the electronic device 900 viewed from diagonally above right on the rear side of the electronic device 900. Fig. 100 is a diagram showing an external configuration of the first attachment member 940. Fig. 101 is a diagram explaining a method of attaching the electronic device 900 using the first attachment member 940.

[0338] The first mounting member 940 includes a base portion 941, a socket portion 942, a ball stud 943, and a mounting portion 944. The base portion 941 is a portion that is attached to the dashboard of a vehicle. The bottom surface of the base portion 941 is attached to the dashboard using a fixing member such as an adhesive sheet or double-sided tape of Japanese Patent No. 5958927 (FIG. 101(a)). The base portion 941 includes a socket portion 942 having a space that opens to the front side. The ball portion of the ball stud 943 is mounted to the socket portion 942. The socket portion 942 and the ball stud 943 mounted to the socket portion 942 form a ball joint mechanism. The ball stud 943 changes its position up, down, left and right when mounted to the socket portion 942 by receiving an external force. The mounting portion 944 is provided at a position on the front side of the ball stud 943. The mounting portion 944 is mounted to the mounting portion 917 of the electronic device 900. The mounting portion 944 has a pair of protruding portions 9441, 9442 protruding on both the left and right sides when viewed from the front. The protruding portion 9441 protrudes further toward the front side than other portions of the mounting portion 944, and protrudes to the right side when viewed from the front. The protruding portion 9442 protrudes further toward the front side than other portions of the mounting portion 944, and protrudes to the left side when viewed from the front. The protruding portion 9441 is inserted into the groove portion 9171, and the protruding portion 9442 is inserted into the groove portion 9172. When the mounting portion 944 is mounted on the mounting portion 917, it is moved from the bottom to the top with the protruding portions 9441, 9442 inserted into the groove portions 9171, 9172, respectively (FIG. 101(b)). After this attachment, the base portion 941 is attached to the attachment portion (attachment surface) of the dashboard (FIG. 101(c)). In this manner, attachment is completed, and the electronic device 900 can receive an external force and change its position up, down, left, and right while attached to the first attachment member 940 (FIG. 101(d)). The user can point the electronic device 900 in a desired direction.

[0339] The mounting part 944 may be configured to change the height of the attached electronic device 900. The mounting part 944 may be, for example, a curved arm-shaped member, and the height of the electronic device 900 may be changed by rotating the mounting direction 180 degrees in the vertical direction. For example, the position of the electronic device 900 becomes higher, and the front of the electronic device 900 faces slightly upward. The configuration for making the height of the electronic device changeable may be configured in other ways, for example, a pair of protrusions 9441, 9442 may be provided at a position shifted above or below the center in the vertical direction of the mounting part 944, and the electronic device may be attached even if it is turned upside down. Such attachment using the first mounting member 940 may be applied to any electronic device described in this specification. In particular, when applied to an electronic device (for example, electronic device 10) having a display unit (for example, display unit 13) on the front surface, the position of the display unit becomes higher and faces slightly upward from the horizontal direction, making it easier for the user to view the display unit.

[0340] Fig. 102 is a diagram showing a state in which the electronic device 900 is attached by being suspended using the second attachment member 950. Fig. 102(a) is a diagram showing the electronic device 900 viewed from diagonally above right on the front side of the electronic device 900. Fig. 102(b) is a diagram showing the electronic device 900 viewed from diagonally above right on the rear side of the electronic device 900. Figs. 103 to 105 are diagrams showing the external configuration of the second attachment member 950. Fig. 106 is a diagram explaining a method of attaching the electronic device 900 using the second attachment member 950.

[0341] The second mounting member 950 is a plate-like member formed using a metal such as aluminum. The second mounting member 950 has a first portion 951, a second portion 952, and a third portion 953. The first portion 951 is a plate-like portion. The first portion 951 supports the electronic device 900 by having an upper surface thereof contact the bottom surface of the electronic device 900.

[0342] The second portion 952 is a plate-like portion connected to the first portion 951 and substantially perpendicular to the first portion 951. The second portion 952 is shorter in the width direction than the first portion 951. The second portion 952 supports the electronic device 900 by contacting one surface with the rear surface of the electronic device 900. The second portion 952 has a pair of protruding portions 9521, 9522 protruding on both the left and right sides as viewed from the front side, as a portion to be mounted on the mounting portion 917 of the electronic device 900. The protruding portion 9521 protrudes further toward the front side than the other portions of the second portion 952, and protrudes to the right as viewed from the front side. The protruding portion 9522 protrudes further toward the front side than the other portions of the second portion 952, and protrudes to the left as viewed from the front side. The protrusion 9521 is inserted into the groove 9171, and the protrusion 9522 is inserted into the groove 9172, whereby they are attached to the second part 952 (FIG. 106(c)).

[0343] The second portion 952 further has a notch 9523. The notch 9523 is cut out so as not to overlap the condenser lens 920 when the second mounting member 950 is attached to the electronic device 900. In this way, the second portion 952 is configured not to cover the condenser lens 920 from the rear side. The notch 9523 may be cut out in a shape that follows the outer edge of the lens holder 915, for example. This is because the second portion 952 does not interfere with the reception of light by the light receiving portion 920A while ensuring the contact area between the second portion 952 and the electronic device 900. Of course, the notch 9523 may be cut out in another shape as long as it does not interfere with the reception of light.

[0344] The third portion 953 is a plate-like portion connected to the second portion 952. The third portion 953 is attached (for example, pasted) to the attachment portion using a fixing member such as double-sided tape, with the upper surface of the third portion 953 serving as an attachment surface. The third portion 953 may be longer in the width direction than the second portion 952 and may be longer in the width direction than the first portion 951. The third portion 953 is configured to be bendable along the boundary portion 9531, and is capable of changing its posture relative to the second portion 952 when subjected to an external force. The boundary portion 9531 is a portion that is a boundary between the third portion 953 and the second portion 952. The boundary portion 9531 is made smaller in the width direction to facilitate folding, but a member such as a hinge may be provided. The second attachment member 950 is folded in response to an external force, and is maintained in the folded state (shape) even after the external force is removed.

[0345] When the user attaches the electronic device 900, the position of the third portion 953 relative to the second portion 952 may be adjusted according to the shape of the attachment portion in the vehicle, in this embodiment, the inclination of the windshield. For example, the attachment portion (the place where the electronic device 900 is attached) may be determined in advance, and the second attachment member 950 may be folded and the angle adjusted so that the electronic device 900 is in an orientation as horizontal as possible to the road. As shown in Figs. 106(a) and 106(d), the third portion 953 is attached to the attachment portion C1, which is a gap region between the ceiling C2 and the windshield C3 (or may be a region near the upper end of the windshield C3), using double-sided tape. The gap region may be recognized by the user as a black border. For example, if the attachment portion C1 is a portion behind the rearview mirror, it is desirable in that the electronic device 900 is hidden behind the rearview mirror for people inside the vehicle. If the third portion 953 is formed to be long in the width direction, it is easy to ensure an adhesion area of ​​the second attachment member 950 to the attachment portion C1, and the electronic device 900 can be fixed more stably. The attachment portion C1 and the third portion 953 are fixed to the attachment portion C1 using, for example, double-sided tape. In this way, when the electronic device 900 is attached using the second attachment member 950, the safety standard is met. In addition, since the electronic device 900 receives the pulsed light Lout from the speed measurement device 30 at a relatively high position, the reception of the light is less likely to be hindered by an obstacle such as a vehicle ahead. Furthermore, in certain vehicle models, the portion near the upper end of the windshield of the vehicle may be configured to have a higher light transmittance than other portions. For this reason, the use of the second attachment member 950 makes it easier for the electronic device 900 to receive the pulsed light Lout. Therefore, by attaching the electronic device 900 using the second attachment member 950, the electronic device 900 can perform control to issue a more accurate alarm. In addition, such attachment makes it difficult for the electronic device 900 to be seen from inside or outside the vehicle, which may be desirable in terms of the aesthetics of the interior of the vehicle. In addition, the attachment portion may be a portion other than the windshield, for example, the rear side of the room mirror.

[0346] [16. Other examples of electronic devices] In this embodiment, a configuration in which the electronic device 80A described in [14. Other Examples of Electronic Devices] is attached by hanging will be described. Figs. 107 to 109 are diagrams showing a state in which the electronic device 80A is attached by hanging using an attachment member 960. Fig. 107(a) is a diagram showing the electronic device 80A viewed from the upper right diagonal direction on the rear side of the electronic device 80A. Fig. 107(b) is a diagram showing the electronic device 80A viewed from the upper right diagonal direction on the rear side of the electronic device 80A. Fig. 108 is a diagram showing the electronic device 80A viewed from below. Fig. 109(a) is a diagram showing the electronic device 80A viewed from the upper right diagonal direction on the rear side of the electronic device 80A when the attachment angle is changed. Fig. 109(b) is a diagram showing the electronic device 80A viewed from the upper right diagonal direction on the rear side of the electronic device 80A when the attachment angle is changed. Figs. 110 to 111 are diagrams showing the external configuration of the attachment member 960. The mounting member 960 includes a portion that can be bent in response to an external force, and the bent state (shape) is maintained even after the external force is removed.

[0347] The mounting member 960 is a plate-like member formed by using, for example, a metal such as aluminum. The mounting member 960 has a first portion 961, a second portion 962, a third portion 963, a fourth portion 964, a fifth portion 965, and a sixth portion 966. The first portion 961 is a plate-like portion. The longitudinal direction of the first portion 961 corresponds to the depth direction of the electronic device 80A. The length of the longitudinal direction of the first portion 961 is approximately the same as or longer than the length of the depth direction of the electronic device 80A. The upper surface of the first portion 961 and the electronic device 80A are fixed by using an adhesive member such as a double-sided tape, but a fixing tool or other method may be used. The sixth portion 966 is connected to one end of the first portion 961. The sixth portion 966 is configured to be bendable along the boundary portion 9661, and is capable of changing its posture with respect to the first portion 961 when subjected to an external force. Boundary 9661 is a portion that is a boundary between first portion 961 and sixth portion 966. Boundary 9661 is made smaller in width direction to facilitate folding, and may be provided with a member such as a hinge.

[0348] In the state of Figs. 107 and 108, the upper surfaces of the first portion 961 and the sixth portion 966 are on the same plane. In this case, the upper surfaces of the first portion 961 and the sixth portion 966 contact the bottom surface of the electronic device 80A, thereby supporting the electronic device 80A. On the other hand, in the state of Fig. 109, the sixth portion 966 is bent downward by approximately 180 degrees from the state of Figs. 107 and 108, and contacts the bottom surface of the first portion 961. In this case, the upper surface of the first portion 961 contacts the bottom surface of the electronic device 80A, thereby supporting the electronic device 80A. The reason why two states are possible will be described later.

[0349] The second portion 962 is a plate-like portion connected to the first portion 961 and approximately perpendicular to the first portion 961. The height direction length of the second portion 962 is approximately the same as or longer than the height direction length of the electronic device 80A. The second portion 962 may support the electronic device 80A by contacting one surface with the front surface of the electronic device 80A. The third portion 963 is a plate-like portion connected to the second portion 962 and approximately perpendicular to the second portion 962. The third portion 963 has a surface approximately parallel to the first portion 961, but the dimension in the longitudinal direction (corresponding to the depth direction of the electronic device 80A) is shorter than the dimension in the depth direction of the first portion 961. The dimensions in the width direction (short side direction) of the second portion 962 and the third portion 963 are approximately the same. When the electronic device 80A is supported by being sandwiched on three sides by the first part 961 (and further the sixth part 966), the second part 962, and the third part 963, it is expected that the electronic device 80A will be held more stably.

[0350] The fourth portion 964 is a plate-like portion connected to the third portion 963. The fourth portion 964 is configured to be bendable along a boundary portion 9641, and is capable of changing its position relative to the third portion 963 when subjected to an external force. The boundary portion 9641 is a portion that serves as a boundary between the fourth portion 964 and the third portion 963. The boundary portion 9641 has a small dimension in the width direction to facilitate bending, and may be provided with a member such as a hinge.

[0351] The fifth portion 965 is a plate-like portion connected to the fourth portion 964. The upper surface of the fifth portion 965 is attached (for example, pasted) to the attachment portion using a fixing member such as double-sided tape, with the upper surface serving as an attachment surface. The fifth portion 965 is configured to be bendable along the boundary portion 9651, and is capable of changing its attitude relative to the fourth portion 964 when subjected to an external force. The boundary portion 9651 is a portion that is a boundary between the fifth portion 965 and the fourth portion 964. The boundary portion 9651 is reduced in width to facilitate folding, but may be provided with a member such as a hinge. The attitude of the fourth portion 964 relative to the third portion 963 and the attitude of the fifth portion 965 relative to the fourth portion 964 may be adjusted according to the shape of the attachment portion in the vehicle, in this embodiment, the inclination of the windshield.

[0352] Fig. 112 is a diagram showing a side view of electronic device 80A attached to a windshield using attachment member 960. Fig. 112(a) shows a case where the inclination angle of the windshield is 30 degrees with respect to the horizontal direction, and Fig. 112(b) shows a case where the inclination angle of the windshield is 60 degrees with respect to the horizontal direction.

[0353] In the example of FIG. 112(a), the sixth portion 966 has an upper surface located on the same plane as the upper surface of the first portion 961. The electronic device 80A is disposed on the upper surfaces of the first portion 961 and the sixth portion 966, and disposed as close to the windshield as possible. In this way, when the inclination of the windshield is relatively gentle, the electronic device 80A can be disposed closer to the windshield. Therefore, for example, compared to when the sixth portion 966 does not exist, the electronic device 80A can more easily receive the pulsed light Lout.

[0354] On the other hand, in the example of FIG. 112(b), the sixth portion 966 is bent downward from the first portion 961. The electronic device 80A is disposed on the upper surface of the first portion 961 and is not in contact with the sixth portion 966. In this way, when the inclination of the windshield is relatively steep, the sixth portion 966 moves the windshield downward, so that the electronic device 80A can be disposed closer to the windshield. Therefore, for example, compared to a case where the sixth portion 966 is not bendable, the electronic device 80A can more easily receive the pulsed light Lout.

[0355] Therefore, by mounting using the mounting member 960, the electronic device 80A can be controlled to issue a more accurate alarm regardless of the inclination angle of the mounting portion of the vehicle. In addition, the use of the mounting member 960 also provides the same effects as the use of the second mounting member 950. Note that even if the mounting member 960 is configured not to have the sixth portion 966, the mounting member 960 still achieves the function of supporting the electronic device 80A.

[0356] [17. Other embodiments] A stay (dashboard mounting stay) that can be attached to the mounting portion 917 of the electronic device 900 described in [15. Other embodiments] to fix the electronic device 900 to the dashboard may be used as the mounting member. As shown in FIG. 113, this stay 970 is formed of a metal such as aluminum. The stay 970 has a plate-shaped first portion 971 whose lower surface is attached to the dashboard using a fixing member such as an adhesive sheet or double-sided tape (double-sided tape for the main body), a plate-shaped second portion 972 perpendicular to the first portion 971, and a pair of protruding portions 973, 974 that protrude from the second portion 972 to both the left and right sides. The protruding portion 973 protrudes further toward the front side than the second portion 972 and protrudes to the right side as viewed from the front side. The protruding portion 974 protrudes further toward the front side than the second portion 972 and protrudes to the left side as viewed from the front side. The pair of protrusions 973, 974 can be attached to grooves 9171, 9172, respectively, of the attachment portion 917 of the electronic device 900. The stay 970 may be further fixed to the second housing 902 of the electronic device 900 using a fastener such as a screw.

[0357] In [15. Other embodiments], [16: Other embodiments of the present invention] and [17: Other embodiments of the present invention], cases have been described in which an electronic device without a display unit is attached to a dashboard or suspended in mid-air, but an electronic device with a display unit may also be attached to a dashboard or suspended in mid-air.

[0358] Fig. 114 shows six views of the above-mentioned second mounting member 950, and Fig. 115 shows six views of the above-mentioned mounting member 960. In Fig. 114 and Fig. 115, a front view is shown in the center, a top view (plan view) is shown at the top, a left side view is shown on the left, a right side view is shown on the right, a bottom view is shown at the bottom, and a rear view is shown below the bottom view.

[0359] [18. Variations] (18-1) The condenser lens 300 may be a cylindrical lens or a linear Fresnel lens. In the latter case, the condenser lens 300 becomes thin. Also, two cylindrical lenses may be arranged crossing each other so as to form an image at a point on the light receiving element, or two linear Fresnel lenses may be arranged crossing each other.

[0360] (18-2) In the configuration of (18-1), a filter that extracts and passes light of a specific wavelength may be placed between the two lenses.

[0361] (18-3) In the configuration of (18-1), the focal position of only one of the lenses may be shifted from the position of the light receiving element.

[0362] (18-4) As the light receiving element, an APD (avalanche photodiode), an MPPC (multi-pixel photon counter), etc. may be used.

[0363] (18-5) An electronic device may use a prism or the like to disperse light and issue an alarm when the light is received by a light receiving element at a specific wavelength (for example, 905 nm). In addition, light incident on a light receiving element corresponding to a position of another wavelength may be treated as a source of a false alarm.

[0364] (18-6) A light receiving unit may be provided on the front of the electronic device to receive light from behind. For example, it may be made compatible with a tracking laser (a laser from a police car). The electronic device may (a) use the reception of light from a tracking laser as a trigger to record video from the rear camera for 10 seconds before and up to one minute after the rear detection is no longer possible. The electronic device may (b) change the content of the alarm depending on whether the light is received from the front or rear. The electronic device may (c) receive either the light from the front side or the light from the rear side by a sensor guided by an optical fiber.

[0365] (18-7) The electronic device may emit a predetermined sound (for example, "Good morning!") when it receives radar waves a predetermined number of times (for example, 21 times) per second.

[0366] (18-8) The electronic device may recognize the type of speed camera by image recognition of a camera (for example, the in-vehicle camera 50) and warn of the type. When the user says "Was that a speed camera?", the electronic device returns information such as "Yes" or "No" based on the image recognition result.

[0367] (18-9) The electronic device may be provided with optical means (lens, etc.) that focuses the half-value angle of one incident light to approximately 3 degrees or less on the left and right (currently approximately 5 degrees) and receives light from the speed measurement device 30.

[0368] (18-10) A light receiving element with a sensor area of ​​less than 1 mm may be used to receive laser light from a speed enforcement device. Currently, the sensor area is approximately 1 mm.

[0369] (18-11) Flocked paper may be attached or anti-reflective material may be applied to the area surrounding the optical path between the optical means (for example, the condenser lens 300) and the light receiving element 410 (where the black tape is currently).

[0370] (18-12) A diaphragm member for narrowing the optical path may be provided between optical means (eg, the condenser lens 300).

[0371] (18-13) The condenser lens 300 may have polished entrance and exit surfaces. Here, the entrance and exit surfaces may be polished to different degrees. The exit surface may be processed so that it is not smooth.

[0372] (18-14) It is not necessary to provide a visible light blocking material on the outer surface of the housing. It is preferable to provide a transparent cover material on the outer surface of the housing. It is preferable to make at least a part of the components of the band-pass filter visible when viewed from the outer surface of the housing. It is preferable to make at least a part of the components of the light receiving element visible when viewed from the outer surface of the housing.

[0373] (18-15) The condenser lens 300 should be, for example, 3 mm or less at its thickest point, or 4 mm or less. This improves the transmittance.

[0374] (18-16) The condenser lens 300 may be formed by two-color molding using a visible light blocking material and a transparent material. For example, a lens may be formed using a transparent material, and a visible light blocking plate may be placed behind the lens. For example, a plate of one material may be used to press and fix a lens made of the other material to a housing. The condenser lens 300 and a lens holder for holding the condenser lens 300 may be integrally formed, and may be brought into contact with a second substrate 1030 having a surface perpendicular to the optical axis of the condenser lens 300 and a light receiving unit 400. The lens holder may have a surface, and may be configured so that the light receiving unit is located at the optical axis position when part of the holder is inserted into a hole in the second substrate 1030 (when the lens holder is pressed by the second substrate 1030, it is automatically aligned with the optical axis, and tilt is suppressed).

[0375] (18-17) A hole corresponding to the center of the condenser lens 300 may be drilled in the lens holder.

[0376] (18-18) The electronic device may record the state of the spot dancing of the laser light with an on-board camera. The recording should be from the start of the laser reception to the end.

[0377] (18-19) For electronic devices, it is recommended that fog and other conditions be recorded using an in-vehicle camera. Recording should be done from the start of reception of the pulsed light to its end. Infrared light is affected by water droplets, so this is used to indicate erroneous measurements.

[0378] (18-20) It is advisable to perform processing to output information from images taken by an onboard camera to determine whether an speed camera (fixed or mobile) was installed properly during measurement.

[0379] (18-21) If radar waves are detected for a certain period of time or longer when an electronic device is turned on, a message such as "Is there another radar detector nearby? That is a product that is emitting severe interference. Please move away from it" may be displayed.

[0380] [19. Modifications of the Electronic Device Having Multiple Light Receiving Elements in the First Embodiment, etc.] (19-1) The first wavelength selecting section 121 may be configured to include a band-pass filter instead of the polarizing filter or in addition to the polarizing filter.

[0381] (19-2) The second wavelength selection unit 123 may be configured to include a filter instead of a polarizing filter or in addition to a polarizing filter, so that when the detection level of the pulsed light Lout is high and the detection levels of other light are low, it can be more reliably treated as an indication of an alarm.

[0382] (19-3) It is preferable that both the first light receiving element 122 and the second light receiving element 124 are used for detecting pulsed light. In this case, it is preferable that both the first wavelength selecting unit 121 and the second wavelength selecting unit 123 are filters having characteristics for selecting and receiving light of a specific wavelength.

[0383] (19-4) A cylindrical lens (with a size that maintains the width of the existing housing window) may be provided so as to span the two first light receiving elements 122 and the second light receiving elements 124 (for example, a semi-cylindrical lens may be arranged horizontally). A light amount detection balance circuit, whose output voltage becomes zero when the amount of light entering the two light receiving elements is equal, may be further added to the existing level detection section for signals from the two first light receiving elements 122 and the second light receiving element 124. When the signals from the two photodiodes rise together, they are detected by a circuit that can detect with high sensitivity.

[0384] (19-5) The partition (shield) between the first light receiving element 122 and the second light receiving element 124 may be removed. This shortens the distance between the two photodiodes, and can minimize changes to the housing structure, or can improve detection sensitivity.

[0385] (19-6) Patent No. 6161429 describes that two laser light sources are incident on a polygon mirror and reflected, and the laser irradiation direction is scanned horizontally around the polygon mirror to scan a wide area, the laser oscillation is set to 0.25° intervals, for example, and the data obtained from the scanning laser sensor is a distance distribution in a polar coordinate system around the sensor, and this data is acquired at a cycle of 12.5 Hz (80 ms). If a light pattern corresponding to this parameter is detected, a notification is issued that it is a laser speed camera. In particular, it is advisable to identify that a laser from a specific manufacturer has been detected and notify the user of this fact.

[0386] [20. Other embodiments] As shown in FIG. 116, the electronic device may have radar sensitivity settings of "OFF" and "AAC / CUSTOM". "OFF" does not sound an alarm even if a radar signal is received. Custom allows detailed settings as follows. Conventionally, there was no setting to turn off the alarm display and alarm sound, so for example, by setting the vehicle speed and alarm level to the minimum, the number of alarms itself is reduced, and as a result, false alarms are reduced. The relationship between the mode and the notification control is as shown in FIG. 116. The alarm speed setting can be set in 11 stages, for example, 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, and 100 km / h or more. The alarm level setting can be set in five stages, ALL (alerts at all levels), level 2 or more, level 3 or more, level 4 or more, and level 5 only. For example, since there are many sources of false alarms in urban areas, it is better not to sound an alarm below a certain level. The electronic device may display an alarm without sounding an alarm. In addition, the electronic device may be configured to reduce the volume of the alarm sound when the reception of radar waves / laser light continues for about 30 seconds or more. Also, the alarm sound may be emitted as shown in FIG. 117.

[0387] [21. Other embodiments] An "unmasked patrol warning" may be realized by applying image recognition. Currently, unmasked patrol cars (follow-up speed violation enforcement) approach from behind the vehicle. Although it is not easy to judge the appearance of such unmasked patrol cars, in reality, they have some characteristics. Therefore, an "unmasked patrol warning" may be issued using these characteristics and the position information of the enforcement position. For example, when the position information of the current position has a predetermined proximity relationship with the position information of the public enforcement position or the enforcement POI, the electronic device issues an alarm if it recognizes the above characteristics. It is desirable to improve the accuracy of the alarm to once in 10 times or once in 5 times based on the characteristics of the car (for example, a specific car model), the number of people in the car wearing blue uniforms, the license plate number (starting with a specific number), the number of passengers, whether the car is chasing from behind, and the difference in the movement of the car before and after overtaking.

[0388] [22. Variation] The present disclosure is not limited to the above-described embodiments, and can be modified as appropriate without departing from the spirit and scope of the present disclosure.

[0389] (Variation 1) The control unit 11 may determine the presence or absence of a speed measuring device based on a digital value corresponding to the amount of received light for the optical method, and an analog value corresponding to the received radio waves for the radar method. This is because the strength of radio waves may change more gradually with distance than the strength of light. The control unit 11 may also determine the presence or absence of reception of pulsed light or microwaves by varying the duration of reception, such as 3 seconds for the optical method and 1 second for the radar method. These durations may be the same.

[0390] (Variation 2) The electronic device 10 may have a dedicated light-emitting unit for notifying the presence of an optical speed measuring device when the electronic device 10 detects the presence of the optical speed measuring device. In this case, the electronic device 10 does not light up this light-emitting unit to notify the presence of another type of speed measuring device. The electronic device 10 may not light up this light-emitting unit except when the electronic device 10 detects the presence of an optical speed measuring device. The electronic device 10 may light up the light-emitting unit in a color or pattern specific to the case when the electronic device 10 detects the presence of an optical speed measuring device. This light-emitting unit may be the light-emitting unit 23 or may be a light-emitting unit separate from the light-emitting unit.

[0391] (Variation 3) The first wavelength selecting section 121 and the second wavelength selecting section 123 may not be band pass filters. The first wavelength selecting section 121 and the second wavelength selecting section 123 may be configured, for example, by a combination of a low pass filter and a high pass filter. The second wavelength selecting section 123 may be a low pass filter as shown by the characteristics in FIG. 118(a). In this example, the second wavelength selecting section 123 transmits light in a wavelength region lower than the wavelength λ2a and blocks light in a wavelength region higher than the wavelength λ2a. The second wavelength selecting section 123 may be a high pass filter as shown by the characteristics in FIG. 118(b). In this example, the second wavelength selecting section 123 transmits light in a wavelength region higher than the wavelength λ2b and blocks light in a wavelength region lower than the wavelength λ2b. Even in this case, the amount of light received by the second signal Sig2 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 reception, but also disturbance light, and such disturbance light generally has a wide wavelength range in which its energy is distributed. Therefore, even if the light receiving unit 12 receives disturbance light that is periodically turned on and off, it is considered that the amount of received light is large. For this reason, when the amount of received light of the first signal Sig1 is large and the amount of received light of the second signal Sig2 is small, that is, when the difference is equal to or greater than the threshold, it can be estimated that the pulsed light Lout has been received. On the other hand, when the amount of received light of the first signal Sig1 is large and the amount of received light of the second signal Sig2 is also large, that is, when the difference is less than the threshold, it can be estimated that the possibility of receiving the pulsed light Lout is low. Therefore, according to the electronic device 10, by receiving light using the first light receiving element 122 and the second light receiving element 124, it is expected that the detection accuracy of the speed measuring device 30 can be improved. Furthermore, the first wavelength selecting section 121 and the second wavelength selecting section 123 may be configured using optical elements other than filters, such as prisms.

[0392] (Variation 4) In the above-described embodiment, the light receiving unit 12 has two elements, the first light receiving element 122 and the second light receiving element 124, but may have only one. FIG. 119 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 or the second light receiving element 124, but has a 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. In addition, the electronic device 10 in this modified example has a driving unit 60. The driving unit 60 moves the first wavelength selecting unit 121 and the second wavelength selecting unit 123 according to the control of the control unit 11. The driving unit 60 has, for example, a motor and a gear. The control unit 11 moves the first wavelength selecting unit 121 and the second wavelength selecting unit 123 so as to alternately cover the light receiving surface of the light receiving element 128 during the operation of the electronic device 10. That is, as shown in FIG. 120(a), 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 obtains the signal obtained from the light receiving element 128 at this time as the first signal Sig1. Next, as shown in FIG. 120(b), the control unit 11 first moves the first wavelength selection unit 121 away 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 obtains the signal obtained from the light receiving element 128 at this time as the second signal Sig2. Then, the control unit 11 detects the speed measurement device 30 based on the first signal Sig1 and the second signal Sig2.

[0393] (Variation 5) In the above-described embodiment, the light receiving unit 12 has two light receiving elements, the first light receiving element 122 and the 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 be expected to improve the detection accuracy of the speed measurement device 30 by selecting different wavelength ranges of light for each of the three or more light receiving elements.

[0394] (Variation 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. Alternatively, the light receiving unit 12 may have at least one light receiving element without having a wavelength selection unit. For example, the light receiving unit 12 may receive a third amount of light when a specific wavelength is selected and received, instead of a second amount of light received, which is an 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 measurement device 30 based on the second amount of light received and the third amount of light received.

[0395] The light receiving unit 12 may receive the incident light by a single light receiving element. The control unit 11 may perform control to notify the presence of the speed measuring device 30 based on a pulse width or a pulse interval that is determined based on the amount of light received by the light receiving unit 12. The method using the pulse width or the pulse interval may be the same as the modified example of the first embodiment described above. The control unit 11 may perform control to notify the presence of the speed measuring device 30 when at least one waveform of pulsed light Lout is received.

[0396] (Variation 7) The light receiving element may be an imaging element of 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 vehicle-mounted camera is preferably a camera without an infrared cut filter. This is to prevent the pulsed light Lout from being blocked. Then, when light of a specific pattern is received as a result of the image analysis, the control unit 11 performs control to notify the presence of the speed measurement device 30. The control unit 11 may detect the light of the specific pattern based on a change in brightness indicating that it is light of a specific wavelength. When light of a specific pattern is received, the control unit 11 may record the 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 the light of the specific pattern is received, but is not limited to this.

[0397] (Variation 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 disposed so as to be able to receive pulsed light from the vehicle 40.

[0398] (Variation 9) When the electronic device 10 detects the speed measuring device 30, it is preferable that the electronic device 10 uploads information such as location information indicating the location of the speed measuring device 30 to a server. The server may be a server that provides a social networking service, or a server that manages and distributes update information regarding objects to be notified.

[0399] The user may be inquired of in advance or at each detection or transmission timing as to whether the electronic device 10 is to transmit location information. If consent is obtained in advance, the burden on the user is reduced. The server may store location information and distribute it to other electronic devices 10. When the electronic device receives location information from the server, it issues a notification when it approaches the location indicated by the location information. The notification may be issued 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 posted information. In addition, the notification based on posted information may be issued only within a predetermined period from the detection of the presence of a speed measuring device or the transmission timing of location information. This is because crackdowns are often carried out at set times.

[0400] Furthermore, the system according to the present disclosure can be applied to detect a light emitting device that emits light of a specific wavelength, in addition to detecting a speed measuring device.

[0401] (Variation 10) A part of the configuration and operation described in each of the above-mentioned embodiments may be omitted or changed. For example, the electronic device 10 may be an optical device that does not support a radar device. For example, the position, shape, and size of each member in the electronic device 10 are merely examples. 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 in the vehicle 40, such as inside the license plate, bonnet, door mirror, or grill. In this case, the control unit 11 may acquire a signal from the light receiving unit 12 via the communication unit 17.

[0402] (Variation 11) Furthermore, the control unit 11 may determine whether or not the speed measurement device 30 is present, and when it determines that at least the speed measurement device 30 is present, may output a signal indicating the determination result to an external device. This external device may notify the presence of the speed measurement device 30. Furthermore, 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.

[0403] (Variation 12) The GPS receiver in the above-mentioned embodiment can be read as a GNSS receiver having an antenna for receiving signals from a Global Navigation Satellite System (GNSS) and a processing circuit for processing the received signals. Positioning by GNSS is commonly used as GPS positioning. The position information obtained by the positioning process using the GNSS receiver is information that represents the positioning point of the position of the electronic device 10 in a coordinate format, and includes at least latitude information and longitude information.

[0404] (Variation 13) A lens angle variable function may be added to an electronic device using the above-mentioned lens (e.g., focusing lens 300, 950). In this way, it is possible to compensate for the misalignment between the laser reception viewing angle and the vehicle traveling direction. For example, the electronic device may be configured such that a lens device equipped with a lens is attached to a housing by a mechanism capable of changing the attitude of the lens device up and down and / or left and right. In this way, the user can adjust the attitude of the lens device so as to point the lens in the desired direction.

[0405] The scope of the present invention is not limited to the configurations expressly described in the specification, but includes combinations of various aspects of the present invention disclosed herein. The configurations of the present invention that are sought to be patented are specified in the appended claims, but it is the intention of the present inventors to claim configurations disclosed in this specification that are not currently specified in the claims.

[0406] The present invention is not limited to the configurations described in the above-mentioned embodiments. The components of each of the above-mentioned embodiments and modifications may be arbitrarily selected and combined. Any components of each of the embodiments and modifications may be arbitrarily combined with any components described in the means for solving the invention or any components that embody any components described in the means for solving the invention. We intend to acquire rights to these as well through amendments to this application or divisional applications. Even if there is a description such as "in the case of" or "when", this is not intended to be a description of a configuration that is limited to that case or time. We also disclose configurations that are not in these cases or times, and we intend to acquire rights to them. Furthermore, the parts described in order are not limited to this order. We also disclose configurations in which some parts are deleted or the order is changed, and we intend to acquire rights to them.

[0407] In addition, we intend to obtain rights to the overall design or partial design by filing a conversion application to a design application. The drawings show the entire device in solid lines, but they include not only the overall design but also partial designs claimed for a portion of the device. For example, it is of course possible to make a portion of the device a partial design, and it is of course possible to make a portion of the device a partial design regardless of the portion. A portion of the device may be a portion of the device, or it may be a part of that portion. We intend to obtain rights to the overall design as well as partial designs in which any portion of the solid line portion of the drawings is made into a dashed line portion. [Explanation of symbols]

[0408] 10:Electronic equipment 10A:Electronic equipment 11: Control unit 12: Light receiving part 12A: Light receiving part 12B: Light receiving part 12C: Light receiving part 13:Display section 14: Speaker 15: Microwave receiver 16: GPS receiver 17: Communications Department 18: Storage part 19:Operation section 20: Sensor section 21: Mounting part 22: Power supply section 23: Light emitting part 24: Cable terminal section 30: Speed ​​measuring device 31: Speed ​​measurement section 32: Imaging section 33: Strobe 40: Vehicle 41: Dashboard 42: Windshield 43: Rearview mirror 50: Car camera 60: Drive unit 70: Camera 80:Electronic equipment 80A:Electronic equipment 81: Cable 90: Sensor device 100: Housing 100A: Housing 101: 1st window 102: 2nd window 103: Bulkhead 104: Area 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: Photodetector 171: Wireless module 201: Illuminance sensor 221: Power switch 222:DC jack 223: Button battery 250: Filter 270: Shield plate 300: Condenser lens 310:Incidence plane 311: Curved surface 312: Exit surface 313: Flat surface 314A: Legs 314B: Legs 400: Light receiving part 410: Photodetector 430: Differential amplifier 440: Differential amplifier 500:Reflector 600:Reflector 801: First unit 802: 2nd unit 803: Lid 810: First board 820: Second board 830: 3rd board 840: 4th board 841: Light receiving part 842:Transparent part 843: Photodetector 850: Antenna section 851: Processing circuit 860: GPS receiver 870: Filter 880: Shield Plate 900:Electronic equipment 900A: Enclosure 901: First unit 902: 2nd cabinet 911: Light emitting part 912:Operation unit 913: Speaker 913A: Sound emitting part 914:DC jack 915: Lens holder 916: Control unit 917: Mounting part 918: Screw 919: Screw 920: Condenser lens 920A: Light receiving section 921: Photodetector 930: Circuit board 931: Photodetector 932: Translucent part 933: Filter 934: Shield Plate 935: Shield case 936: Shield case 940: First mounting member 941: Pedestal 942: Socket part 943: Ball stud 944: Mounting part 950: Second mounting member 951: Part 1 952:Second part 953: 3rd part 960: Mounting material 961: Part 1 962:Second part 963: 3rd part 964: Part 4 965: Part 5 966: Part 6 970: Stay 971: Part 1 972:Second part 973:Protrusion 974:Protrusion 1001: First unit 1002: Second unit 1002A: Second housing 1003: Lid 1006: Lens holder 1010: First substrate 1030: Second board 1031: Shield case 1033:Transparent part 1331: Control circuit

Claims

A system for performing notification in response to reception of laser light for measuring the speed of a vehicle, comprising: a condenser lens; a light receiving element that receives the light condensed by the condenser lens; a control unit that controls the notification in response to the laser light received by the light receiving element; wherein the vertical center position of the condenser lens is shifted upward from the light receiving element; the system is characterized by this. The system according to claim 1, wherein the light receiving element is of a lensless type. The system according to claim 1, wherein the optical axis of the condenser lens is inclined toward the left front side with respect to the longitudinal direction of the vehicle. The system according to claim 1 or 2, wherein the light receiving element is disposed at a position shorter than the focal length of the condenser lens. The system according to any one of claims 1 to 3, wherein the light receiving element is disposed at a position shorter than the focal length of the condenser lens. ​ ​

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