JP7348038B2 - Display light emitting device - Google Patents

Description

The present invention relates to a display light emitting device that emits display light for displaying an image on a combiner provided on a helmet.

Patent Document 1 describes a wireless communication unit that receives distance information indicating the distance to a predetermined guidance point and direction information indicating the traveling direction at the guidance point from a communication device, and distance information received by the wireless communication unit. and an image output unit that generates a guide image indicating the direction of travel at the guide point based on the information and the direction information, and emits display light for displaying the guide image on a combiner provided on the helmet. An ejection device is disclosed.

JP2008-65593A

By the way, in the display light emitting device as in Patent Document 1, when the next guidance point approaches and the distance from the current location to the next guidance point is less than the reference distance, the guidance including an arrow indicating the direction of travel, etc. It is conceivable to continue displaying the image until the next guidance point. This has the advantage that the user can always check the direction of travel, but if the user is moving at a slow speed, the guidance display will be displayed for a long time, and the guidance image will not be displayed on the helmet. There is a possibility that the wearer may find it bothersome. On the other hand, if the user is moving at a high speed, the time it takes to reach the next guidance point will be short, so the user may end up reaching the guidance point while checking the guidance image, and the user may reach the guidance point while checking the guidance image. There is a risk that you will not be able to proceed in the direction you are moving.

The present invention has been made in view of the above, and aims to prevent helmet wearers from finding the guidance images bothersome, and to enable helmet wearers to understand the progress shown in the guidance images at guidance points. The goal is to prevent you from being unable to move in the right direction.

The first invention acquires distance information indicating the distance from the current location to a predetermined guide point, direction information indicating the direction of travel at the guide point, and speed information indicating the moving speed from the current location to the predetermined guide point. and a display for generating a guidance image indicating the direction of travel at the guidance point based on the direction information received by the information acquisition section, and displaying the guidance image on a combiner provided on the helmet. a display light emitting device comprising: an image output section that emits light; the image output section is configured to determine whether the distance indicated in the distance information acquired by the information acquisition section is less than a first predetermined distance; and a speed determination as to whether the moving speed indicated by the speed information acquired by the information acquisition section is equal to or higher than a predetermined speed. , if the distance determination determines that the distance is less than the first predetermined distance, and the speed determination determines that the speed is greater than or equal to the predetermined speed, emitting display light for displaying the guide image; On the other hand, if the distance determination determines that the distance is less than the first predetermined distance, and the speed determination determines that the speed is less than the predetermined speed, the guide image is displayed. The display light is characterized in that it is configured to perform a stop process of emitting display light for a predetermined period of time and then stopping the display light.

According to this configuration, when the user who is a helmet wearer gradually approaches the guidance point and the distance from the current location to the guidance point becomes less than the first predetermined distance, if the user's movement speed is higher than the predetermined speed; Since the guide image is displayed continuously, it is possible to confirm the direction of travel at the next guide point even if it takes a short time to reach the next guide point. On the other hand, even if the distance from the current location to the guidance point is less than the first predetermined distance, if the moving speed is lower than the predetermined speed, the guide image will be displayed for a predetermined period of time and then disappear. becomes difficult to feel.

In a second aspect of the invention, the image output unit determines whether the distance indicated by the distance information acquired by the information acquisition unit is less than a second predetermined distance that is shorter than the first predetermined distance. However, if it is determined that the distance is less than the second predetermined distance, the guide image is characterized in that it is configured to continuously output display light for displaying the guide image.

According to this configuration, when the next guide point is further approached, the guide image is continuously displayed, so that the user is less likely to make a mistake in the direction of travel at the guide point.

In a third aspect of the present invention, when the distance determination determines that the distance is less than the first predetermined distance, and the speed determination determines that the speed is greater than or equal to the predetermined speed, It is characterized in that it is configured to continue emitting display light for displaying a guide image until it reaches a guide point.

According to this configuration, when the moving speed is equal to or higher than the predetermined speed, it is assumed that the user is moving at high speed, and therefore it will take a short time to reach the next guidance point. In this case, by displaying the guide image until the user reaches the guide point, the user can check the direction of travel at the next guide point without feeling bothered.

In a fourth aspect of the present invention, the image output unit displays the guide image without performing the speed determination when the distance determination determines that the distance is equal to or greater than the first predetermined distance. The device is characterized in that it is configured to perform a stop process of stopping light after emitting light for a predetermined period of time.

According to this configuration, if the distance indicated by the distance information is equal to or greater than the first predetermined distance, the user is sufficiently far away from the next guidance point, so the guidance image is not displayed continuously. , even if it is displayed for a predetermined period of time and then turned off to avoid any inconvenience, the user will not be inconvenienced. This predetermined time can be set to, for example, several seconds to about 10 seconds, and is sufficient time for the user to confirm the information.

In a fifth invention, the information acquisition unit is configured to be connected to a mobile phone having a built-in GPS receiver, and to acquire the distance information and the speed information calculated based on positioning information by the GPS receiver. It is characterized by being

According to this configuration, by using the positioning information of the GPS receiver of the mobile phone, distance information indicating the distance from the current location to the predetermined guidance point can be accurately calculated, and distance information indicating the distance from the current location to the predetermined guidance point can be calculated accurately. It is also possible to accurately calculate speed information indicating the moving speed. By acquiring these distance information and speed information from a mobile phone, it is possible to provide highly accurate and easy-to-understand route guidance while simplifying the configuration of the display light emitting device.

In a sixth invention, the image output unit acquires the information after the distance determination determines that the distance is less than the first predetermined distance, and the speed determination determines that the speed is equal to or greater than the predetermined speed. If the moving speed indicated by the speed information acquired at the section decreases below the predetermined speed, the display light for displaying the guide image is continued to be emitted until the guide point is reached. It is characterized by

That is, after the distance is determined to be less than the first predetermined distance and the speed is determined to be greater than or equal to the predetermined speed and the guide image is displayed, the moving speed may decrease. If the guide image is deleted in this case, the guide image that has been displayed will suddenly disappear, which may give the user a sense of discomfort. According to this configuration, even if the moving speed decreases after the guide image is displayed, the guide image can continue to be displayed, so that the user does not feel uncomfortable.

Advantageous Effects of Invention According to the present invention, it is possible to suppress the helmet wearer from finding the guide image bothersome, and it is also possible to prevent the helmet wearer from being unable to proceed in the direction of travel shown in the guide image at the guide point.

1 is an external view showing the configuration of a navigation system including a display light emitting device according to an embodiment of the present invention. 1 is a functional block diagram showing the configuration of a navigation system including a display light emitting device according to an embodiment of the present invention. FIG. 3 is a diagram showing an example of a guide image output by an image output unit. It is a figure which shows the example of the guidance image which displays the distance from a present location to a destination. It is a figure which shows the example of the guidance image which displays the name of a guidance point. FIG. 3 is a diagram showing an example of a guide image displaying lane guidance information. It is a figure which shows the example of the guidance image which displays a reroute state. FIG. 6 is a diagram illustrating an example of a guide image that displays the incoming call status. It is a figure which shows the example of the guidance image which displays a call state. FIG. 6 is a diagram illustrating an example of a guide image that displays a call in progress. It is a figure which shows the example of the guide image which displays the end of a story. It is a figure which shows the example of the guidance image which displays the battery residual quantity of a head-up display apparatus. It is a figure which shows the example of the guidance image which displays the battery residual quantity of a smart phone. It is a figure which shows the example of the guidance image which displays an error. FIG. 6 is a diagram illustrating an example of a guide image that displays a state in which communication is connected. FIG. 6 is a diagram illustrating an example of a guide image that displays a state in which communication is disconnected. 5 is a flowchart showing operations performed by the display light emitting device according to the embodiment of the present invention.

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 shows a navigation system 1 including a display light emitting device according to an embodiment of the present invention. This navigation system 1 includes a smartphone (mobile phone) 10 as a communication device and a helmet 20, and is for use in a motorcycle. Note that the navigation system 1 can also be used in vehicles other than motorcycles, such as personal watercraft, bicycles, snowmobiles, and the like.

The smartphone 10 has a telephone function and a data communication function using a telephone line, and as shown in FIG. 2, a wireless communication interface 11 that performs wireless communication using Bluetooth (registered trademark), a GPS receiver 12, It includes a storage section 10a and a touch operation panel 10b. This smartphone 10 includes a mobile operation system 13 that is the OS of the smartphone 10, and a car navigation service application (hereinafter referred to as "car navigation service application") that runs on the mobile operation system 13 using position information etc. acquired by the GPS receiver 12. It is equipped with 14 apps (referred to as ``apps''). The car navigation application 14 may have its own map information, may use map information stored in the storage unit 10a of the smartphone 10, or may download necessary map information via the Internet. May be used. Programs for the mobile operation system 13, car navigation application 14, and map information can be stored in the storage unit 10a. The map information also includes road information, intersection names, etc.

The touch operation panel 10b includes, for example, a liquid crystal display, and is configured to be able to display a user interface generated by the mobile operation system 13, various images, an execution screen of the car navigation application 14, various setting screens, and the like. The touch operation panel 10b also includes, for example, a pressure-sensitive operation detection means, and is configured to accept touch operations by the user.

The GPS receiver 12 is a conventionally well-known device for positioning the current location, and is configured to be able to measure the current location with high accuracy almost in real time. The position information obtained by the GPS receiver 12 is used by the mobile operation system 13 and the car navigation application 14. The moving speed can also be calculated based on the position information obtained by the GPS receiver 12. The smartphone 10 is assumed to be owned by a user (rider of a motorcycle) who wears a helmet 20, so that current position information and speed information of the user, that is, the motorcycle can be acquired. The smartphone 10 may be detachably attached to a motorcycle, or may be housed in a bag or the like that can receive GPS signals.

The smartphone 10 uses the car navigation application 14 to plot a route from the current location to the destination based on the location information (current location information) obtained by the GPS receiver 12 and the destination information input on the touch operation panel 10b. It is configured to automatically search and set routes. It is also equipped with a so-called auto-reroute function that automatically re-searches for a route if the current location deviates from a preset route during guidance. It is also configured to be able to calculate the distance (remaining distance) and expected arrival time from the current location to the destination. Further, on the route from the current location to the destination, there are a plurality of guide points such as intersections and branches, and the direction of travel at each guide point is also determined by route setting. The car navigation application 14 is configured to calculate the distance from the current location to the next guidance point and the time from the current location to the next guidance point, based on map information and current location information. Therefore, the car navigation application 14 includes the above-mentioned information, for example, distance information indicating the distance from the current location to a predetermined guide point, direction information indicating the direction of travel at the guide point, and road information from the current location to the predetermined guide point. The above speed information indicating the moving speed can be acquired at predetermined time intervals (for example, every second).

The smartphone 10 is configured to transmit each piece of information acquired by the car navigation application 14, such as distance information, direction information, speed information, and remaining distance, through wireless communication using the wireless communication interface 11. The direction information also includes lane guidance information that provides guidance on the lane in which the vehicle should proceed. If a guide point has a name, that name is also transmitted via wireless communication using the wireless communication interface 11. Note that if a destination has not been set (a route has not been set), distance information and direction information are not transmitted.

The car navigation application 14 is configured to be able to obtain real-time information such as whether there is traffic jam on the set route using a communication line. Real-time information is also transmitted by wireless communication using the wireless communication interface 11.

The smartphone 10 also indicates that the call is incoming when there is an incoming call, that the call is in progress when the call is in progress, and that the call has ended when the call is over. , are transmitted by wireless communication using the wireless communication interface 11, respectively. Furthermore, the remaining battery level of the smartphone 10 is also transmitted via wireless communication using the wireless communication interface 11 . The status of these smartphones 10 is configured to be acquired and transmitted by the car navigation application 14.

As shown in FIG. 1, a window hole 21 is formed on the front side of the helmet 20 so as to face between the forehead and chin of the wearer of the helmet 20. Translucent shields 22 are attached to both left and right sides of the peripheral edge of the window hole 21 so as to open and close the window hole 21 by rotating vertically. First and second switches 23 and 24 are arranged on the outer surface of the helmet 20 on the left side of the window hole 21 when viewed from the wearer of the helmet 20, that is, at positions corresponding to the ears of the wearer of the helmet 20. It is set up. In addition, a semi-transparent plate-shaped combiner 26 is attached to the inner side via a mounting member 27 at a location on the upper edge of the window hole 21 of the helmet 20 that is to the right of the center in the left-right direction when viewed from the wearer of the helmet 20. It is installed from. A display light emitting device 30 according to an embodiment of the present invention and a mirror 28 that projects the display light emitted by the display light emitting device 30 onto a combiner 26 are built below the window hole 21 of the helmet 20. There is. A guide image is generated by the display light emitting device 30, and display light corresponding to the guide image is emitted from the display light emitting device 30 and then reflected by the mirror 28. The display light reflected by the mirror 28 is then projected onto the combiner 26, where it is further reflected so as to enter the field of view of the helmet wearer. Thereby, the helmet wearer can visually recognize the display image of the display light as a virtual image, superimposed on the scenery in the front field of view through the combiner 26.

The display light emitting device 30, the combiner 26, and the mirror 28 constitute a head-up display device 40. Power is supplied to the head-up display device 40 from a battery 50 shown in FIG. 2 . The battery 50 can be built into the helmet 20.

As shown in FIG. 2, the display light emitting device 30 uses a Bluetooth module 31 as a wireless communication unit capable of communicating with the smartphone 10 using Bluetooth, and displays information on the combiner 26 based on information received by the Bluetooth module 31. and an image output unit 32 that generates an image to be displayed and emits display light for displaying the generated image on the combiner 26. The display light emitting device 30 is configured to be able to detect the operating states of the first and second switches 23 and 24, and detects whether the first switch 23 has been pressed for a long time (for example, if it has been pressed continuously for several seconds or more). ) is detected, it starts.

The Bluetooth module 31 is an information acquisition unit that is connected to the wireless communication interface 11 of the smartphone 10 and acquires various information transmitted from the wireless communication interface 11. Various information transmitted from the wireless communication interface 11 of the smartphone 10 includes distance information indicating the distance from the current location to a predetermined guidance point, direction information (including lane guidance information) indicating the direction of travel at the guidance point, and current information. It includes speed information indicating speed, remaining distance, estimated time of arrival, name of guidance point, etc. Furthermore, the Bluetooth module 31 also acquires information regarding the incoming call status, call-in-progress status, end of call, information regarding the remaining battery level, etc. as the status of the smartphone 10 . These pieces of information may be acquired each time the information is updated, or may be acquired at determined time intervals. In this embodiment, the information is acquired every second. Note that if a destination has not been set (a route has not been set), distance information and direction information are not acquired.

The image output unit 32 includes a microcomputer 32a, a flash ROM (Read Only Memory) 32b, and a GDC (Graphics) that generates a guide image by combining the symbols stored in the flash ROM 32b based on instructions from the microcomputer 32a. Display Controller) 32c, and an LCOS (Liquid Crystal on Silicon) 32d that emits display light for displaying the guide image generated by the GDC 32c on the combiner 26. The configuration of the image output unit 32 is not limited to the configuration described above, and a configuration used as a head-up display device can be used.

Specifically, the image output unit 32 generates, for example, a guide image 33 as shown in FIG. is emitted. The guide image 33 can be divided into a direction distance display area 33A and a various information display area 33B. In this example, the direction distance display area 33A is set in the upper half of the guide image 33, and the various information display area 33B is set in the lower half of the guide image 33, but the present invention is not limited to this.

The direction distance display area 33A is provided with a distance display area 33a that displays the distance from the current location to a predetermined guide point, and a direction display area 33b that displays the direction of travel at the predetermined guide point, arranged side by side in the left-right direction. ing. In the distance display area 33a, when the distance to a predetermined guide point is long, the unit is displayed in "km", and when the distance to the predetermined guide point is less than 1 km, the unit is displayed in "m". You can also do this. In the direction display area 33b, a moving direction indicating image such as an arrow is displayed. In the various information display area 33B, an estimated value (estimated arrival time) 33c of the time required from the current location to the destination can be displayed. Further, the current time may be displayed in the various information display area 33B. The current time may be acquired from the smartphone 10 or from time information held by the display light emitting device 30.

As shown in FIG. 4A, the remaining distance 33d from the current location to the destination can also be displayed in the various information display area 33B. As shown in FIG. 4B, the name 33e of the guide point can also be displayed in the various information display area 33B. As shown in FIG. 4C, lane guidance information 33f can also be displayed in the various information display area 33B. As shown in FIG. 4D, reroute information 33g indicating that the device is in a reroute state can also be displayed in the various information display area 33B. For example, the user operates the first and second switches 23, 24, the smartphone 10, etc. to select any one of the estimated travel time 33c, remaining distance 33d, guide point name 33e, and lane guidance information 33f. You can choose by. The reroute information 33g is automatically displayed in place of other displays when reroute is being performed.

As shown in FIG. 5A, an incoming call mark 33h indicating that the telephone is in an incoming call state can be displayed in the various information display area 33B while the call is incoming. As shown in FIG. 5B, in the various information display area 33B, a call mark 33i indicating that the telephone is in the outgoing state can also be displayed during the outgoing call. As shown in FIG. 5C, in the various information display area 33B, a call mark 33j indicating that the telephone is in a call state can be displayed during the call. Along with the incoming call mark 33h, the outgoing call mark 33i, and the busy mark 33j, other party information such as the name of the other party can be displayed. The other party information can be obtained from the smartphone 10. Further, as shown in FIG. 5D, in the various information display area 33B, a call end mark 33k indicating that the telephone call has ended may be displayed for a short period of about several seconds. The incoming call mark 33h, the outgoing call mark 33i, the busy call mark 33j, and the end call mark 33k are automatically displayed based on the information regarding the call transmitted from the smartphone 10, and are given priority over other displays. When the incoming call mark 33h, the outgoing call mark 33i, the busy call mark 33j, and the end call mark 33k are erased, the previous information is displayed again.

As shown in FIG. 6A, the remaining battery level 33l of the head-up display device 40 can also be displayed in the various information display area 33B. As shown in FIG. 6B, the remaining battery power 33m of the smartphone 10 can also be displayed in the various information display area 33B. The remaining battery capacities 33l and 33m can be displayed in combination with numerical values. The remaining battery capacity 33l, 33m is displayed in place of other displays, for example, when the user operates the first and second switches 23, 24, etc. After being displayed, the information is erased within a short period of several seconds, and the information before being displayed is redisplayed.

As shown in FIG. 7A, an error mark 33n can also be displayed in the various information display area 33B. The error mark 33n is displayed in place of other displays when the device is abnormal, and may be displayed for a long time or for a short time depending on the degree of abnormality. The error mark 33n can include an error number. The error number is a number indicating an abnormal part of the device. As shown in FIG. 7B, the various information display area 33B can also display a connection mark 33p that indicates the state in which communication is connected, and specifically, from the time when the communication connection by the Bluetooth module 31 is successful. Displayed only for a short period of a few seconds. As shown in FIG. 7C, in the various information display area 33B, a disconnection mark 33r indicating a disconnected state of communication can be displayed. Specifically, if the communication by the Bluetooth module 31 is disconnected for some reason. In this case, it will be displayed for a short period of several seconds from the time of disconnection. When displaying the error mark 33n, connection mark 33p, and disconnection mark 33r, the distance and traveling direction are erased.

Note that the output of the guide image by the image output unit 32 can be forcibly stopped by briefly pressing the first switch 23.

The operation of the navigation system 1 configured as described above will be described below.

First, when the driver of a motorcycle, etc. has the smartphone 10 with the car navigation application 14 activated or is attached to the motorcycle, wears the helmet 20 and presses and holds the first switch 23, the display appears. The light emitting device 30 is activated. The smartphone 10 with the car navigation application 14 activated transmits various information that is updated every second through wireless communication using the wireless communication interface 11. When the wireless communication with the smartphone 10 by the Bluetooth module 31 is successful after startup, the display light emitting device 30 generates and outputs a guide image displaying the connection mark 33p, as shown in FIG. 7B. While wireless communication is being performed with the smartphone 10 for which the route has been set, the operation shown in the flowchart of FIG. 8 is repeatedly executed. This operation stops when the route is deleted.

After starting this operation, first, in step S101, the microcomputer 32a of the image output section 32 initializes the count value k to 1. This value is only set for convenience.

Next, in step S102, the Bluetooth module 31 transmits various information transmitted by the smartphone 10, such as distance information to the next guidance point, direction information indicating the direction of travel at the guidance point, and information on movement from the current location to a predetermined guidance point. Receive speed information indicating speed. After that, the process advances to step S103. In step S103, the microcomputer 32a of the image output unit 32 determines whether the distance D (distance to the next guidance point) indicated in the distance information received by the Bluetooth module 31 in step S102 is less than a predetermined reference distance _Rk . Determine whether it exists or not. Here, R ₁ to R ₆ are set to 5 km, 4 km, 3 km, 2 km, 1 km, and 0.5 km in order, with R ₁ being the longest and R ₆ being the shortest. The distances R ₁ to R ₆ are not limited to the above distances, but can be set to any distance. Furthermore, the number of R _k is not limited to 6, but can be set to any number greater than or equal to 2.

If the determination in step S103 is NO, the distance D to the next guidance point is greater than or equal to the predetermined reference distance _Rk , and in this case, the process advances to step S102. When _Rk is the longest _R1 , the reference distance is 5 km, and the fact that the determination in step S103 is NO means that the next guidance point is 5 km or more away from the current location. In other words, since the distance from the current location to the next guidance point is sufficiently long, there is no need to provide guidance to the next guidance point, and in this case, the process does not proceed to the guidance image output step of step S108 or step S109. do not have. This prevents the user from feeling bothered. If NO is determined in step S103, the process returns to step S102, and distance information, direction information, and speed information are received from the smartphone 10. Note that since the direction information does not change unless the guidance point is changed, reception of the direction information can be omitted.

Thereafter, the process proceeds to step S103, and as described above, the microcomputer 32a of the image output unit 32 determines whether the distance D is less than the predetermined reference distance _Rk . The longest reference distance _R1 is preferably set to, for example, 10 km or less, more preferably 8 km or less, and still more preferably 5 km or less. It is preferable to set _R1 to 3 km or more.

On the other hand, if the determination in step S103 is YES and the distance D is less than the predetermined reference distance _Rk , the process advances to step S105, and the microcomputer 32a of the image output unit 32 determines whether the count value k=5 or not. Determine. _R5 is 1 km, and the distance indicated by _R5 is the first predetermined distance. Step S105 is a step in which the image output unit 32 determines whether the distance indicated in the speed information received by the Bluetooth module 31 is less than a first predetermined distance.

If the determination in step S105 is YES and the count value k is 5, the process advances to step S106. Proceeding to step S106 means that the distance D from the current location to the next guidance point is less than 1 km, and the time required to reach the next guidance point has become shorter. In step S106, the microcomputer 32a of the image output unit 32 determines whether the speed V indicated in the speed information received by the Bluetooth module 31 in step S102 is equal to or higher than 80 km/h (predetermined speed). If the speed V is 80 km/h or more, that is, if the speed condition is satisfied, the process proceeds to step S108, whereas if the speed V is less than 80 km/h, that is, if the speed condition is not satisfied, the process proceeds to step S108. Then, the process advances to step S109. Step S106 is a speed determination step.

In step S108, the image output unit 32 displays a guide image on the combiner 26 until the distance D indicated in the distance information received by the Bluetooth module 31 becomes 0, that is, until the user reaches the guide point. Starts continuous output that continues to emit light. In other words, the image output unit 32 determines that the distance indicated in the distance information received by the Bluetooth module 31 is less than 1.0 km (first predetermined distance), and that the image output unit 32 determines that the distance indicated by the distance information received by the Bluetooth module 31 is less than 1.0 km (first predetermined distance), and that the predetermined speed If it is determined that the above is the case, the display light for displaying the guide image is continued to be emitted until the guide point is reached. Note that after proceeding to step S108, the speed V may decrease to less than 80 km/h, but even in this case, the image output unit 32 is configured to continue emitting display light for displaying the guide image on the combiner 26. has been done. Further, in step S108, the guide image shown in FIG. 3, the guide image with the name of the guide point shown in FIG. 4B, the guide image with lane guidance information shown in FIG. This can be done by Note that, for example, the guide images shown in FIGS. 5A to 5D are displayed in place of the guide images shown in FIGS. 3, 4B, 4C, etc. when the display timing arrives.

During the continuous output of the guide image, the GDC 32c of the image output unit 32 generates the guide image according to instructions from the microcomputer 32a, and the LCOS 32d emits display light for displaying the guide image generated by the GDC 32c on the combiner 26. . Note that while the continuous output is being executed, the distance information received by the Bluetooth module 31 is updated every second, so the generated guide image is also updated every second. When the distance D shown in the distance information becomes 0, the image output unit 32 turns off the display light and ends the continuous output.

On the other hand, if the determination in step S105 is NO and the count value k is not 5, that is, if it is determined that the count value k=1 to 4 or 6, the process advances to step S107. In step S107, the microcomputer 32a of the image output unit 32 determines whether the count value k=6. R ₆ is 0.5 km, and the distance indicated by R ₆ is a second predetermined distance that is shorter than the first predetermined distance. Step S107 is a step in which the image output unit 32 determines whether the distance indicated in the speed information received by the Bluetooth module 31 is less than a second predetermined distance.

If the determination in step S107 is YES and the count value k is 6, the process advances to step S108. Proceeding from step S107 to step S108 means that the distance D from the current location to the next guidance point is less than 0.5 km, and the time required to reach the next guidance point is even shorter.

On the other hand, if the determination in step S107 is NO and the count value k is not 6, the process advances to step S109. Proceeding to step S109 means that the distance D from the current location to the next guidance point is 1.0 km or more, and the distance from the current location to the next guidance point is long. In step S109, the image output unit 32 continues to emit display light for displaying the guide image on the combiner 26 for a predetermined period of time (for example, about several seconds to 10 seconds). During this time, the distance information received by the Bluetooth module 31 is updated every second, so the generated guide image is also updated every second. When a predetermined period of time has elapsed since the start of the display light emission, the display light emission is ended and the process proceeds to step S110. In step S110, the microcomputer 32a of the image output unit 32 adds 1 to the count value k, and returns to step S102. This completes the series of operations described above. After this operation is completed, the guidance point is changed and the next operation is continued.

A specific example will be described below. For example, assume that the distance D from the current location to the next guidance point is 5 km or more, and that the vehicle is traveling from there toward the next guidance point. Immediately after the start of the operation, the reference distance for determination in step S103 is _R1 .

Thereafter, when the next guidance point is approached and the distance D from the current location to the next guidance point becomes less than 5 km, YES is determined in step S103, NO is determined in step S105, NO is determined in step S107, and the process proceeds to step S109. The guide image is displayed for, for example, 10 seconds. This is normal output processing. That is, if it is determined in the distance determination that the distance is 1.0 km (first predetermined distance) or more, the image output unit 32 displays the display for displaying the guide image without performing the speed determination in step S106. After emitting light for a predetermined period of time, it is configured to perform a stop process of stopping the light. Thereafter, R _k becomes R ₂ in step S110, and the process proceeds to step S102. Before the start of the normal output process and after the end of the normal output process, a stop process for stopping the emission of display light is performed.

When the guide point is further approached and the distance D from the current location to the guide point becomes less than 4 km, it is determined in step S103 that _R2 is the reference distance, so it becomes YES, and in step S105 it is determined NO, and in step S107 it is also determined NO. The process then proceeds to step S109, where the guide image is displayed for, for example, 10 seconds (normal output processing). Thereafter, R _k becomes R ₃ in step S110, and the process proceeds to step S102.

When the guide point is further approached and the distance D from the current location to the guide point becomes less than 3 km, it is determined in step S103 that R ₃ is the reference distance, so it becomes YES, and in step S105 it is determined NO, and in step S107 it is also determined NO. The process then proceeds to step S109, where the guide image is displayed for, for example, 10 seconds (normal output processing). Thereafter, R _k becomes R ₄ in step S110, and the process proceeds to step S102.

When the guide point is further approached and the distance D from the current location to the guide point becomes less than 2 km, it is determined in step S103 that _R4 is the reference distance, so it becomes YES, and in step S105 it is determined NO, and in step S107 it is also determined NO. The process then proceeds to step S109, where the guide image is displayed for, for example, 10 seconds (normal output processing). After that, R _k becomes R ₅ in step S110, and the process proceeds to step S102.

When the guide point is further approached and the distance D from the current location to the guide point becomes less than 1 km, a determination is made in step S103 using _R5 as the reference distance, resulting in YES, and a speed determination is made in step S106. As a result of the speed determination, if it is determined that the moving speed is high, the guidance image is continuously displayed in step S108, so even if the time to reach the next guidance point is short, the next guidance point The user can confirm the direction of travel. On the other hand, even if the distance D from the current location to the guidance point is less than 1 km, if it is determined that the moving speed is slow, the guidance image is displayed for a predetermined time in step S109, and then the display light is stopped. Since it is processed, it is less bothersome. Thereafter, R _k becomes R ₆ in step S110, and the process proceeds to step S102.

When the guide point is further approached and the distance D from the current location to the guide point becomes less than 0.5 km, it is determined in step S103 that R ₆ is the reference distance, so YES is determined, and NO is determined in step S105, and YES is determined in step S107. It is determined that Then, the guide image is continuously displayed until the guide point is reached in step S108. That is, when it is determined that the distance indicated in the distance information received by the Bluetooth module 31 is less than 0.5 km (second predetermined distance), the image output unit 32 performs the speed determination in step S106. Instead, it is configured to continuously output display light for displaying a guide image.

Therefore, according to the present embodiment, when the user gradually approaches the guidance point and the distance from the current location to the guidance point becomes less than 1.0 km, and the user is traveling at a high speed of 80 km/h or more, the guidance Since the image is displayed continuously, it is possible to confirm the direction of travel at the next guidance point even if it takes a short time to reach the next guidance point. On the other hand, even if the distance from the current location to the guidance point is less than 1.0km, if the moving speed is slow (less than 80km/h), the guidance image will be displayed for a predetermined time and then disappear, which may be annoying. It becomes difficult.

Note that in this embodiment, the speed condition is that the speed V indicated in the speed information received by the Bluetooth module 31 is 80 km/h or more, but the speed V is not less than another predetermined reference speed. may be used as the speed condition, and the speed V can be set, for example, in a range of 60 km/h or more and 90 km/h or less.

Further, in this embodiment, the reference distance R ₆ is 0.5 km and the reference distance R ₅ is 1 km. However, if the reference distance R ₅ is longer than the reference distance R 6, the reference distance _{R 5 and} the reference distance R ₆ are It may be set to other distances. The reference distance R ₆ can be set, for example, in a range of 0.3 km or more and 0.6 km or less, and the reference distance R ₅ can be set, for example, in a range of 0.8 km or more and 1.5 km or less.

INDUSTRIAL APPLICATION This invention is useful as a display light emitting device which outputs the image displayed on the combiner provided in the helmet.

10 Smartphones (communication devices, mobile phones)
20 Helmet 26 Combiner 30 Display light emitting device 31 Bluetooth module (wireless communication section, information acquisition section)
32 Image output section

Claims (5)

an information acquisition unit that acquires distance information indicating the distance from the current location to a predetermined guide point, direction information indicating the direction of travel at the guide point, and speed information indicating the moving speed from the current location to the predetermined guide point;
An image output that generates a guide image indicating the direction of travel at the guide point based on the direction information received by the information acquisition unit, and emits display light for displaying the guide image on a combiner provided on the helmet. A display light emitting device comprising:
The image output unit determines whether the distance indicated by the distance information acquired by the information acquisition unit is less than a first predetermined distance, and determines whether the distance indicated by the distance information acquired by the information acquisition unit is determined by the speed information acquired by the information acquisition unit. configured to perform a speed determination as to whether or not the moved speed is equal to or higher than a predetermined speed;
Furthermore, the image output unit displays the guide image when the distance determination determines that the distance is less than the first predetermined distance, and the speed determination determines that the speed is greater than or equal to the predetermined speed. While performing a continuous output to continue emitting display light to cause is configured to perform a stop process of emitting display light for displaying the guide image for a predetermined period of time and then stopping, and the distance indicated by the distance information acquired by the information acquisition unit is It is determined whether the distance is less than a second predetermined distance, which is shorter than the first predetermined distance, and when it is determined that the distance is less than the second predetermined distance, a display light for displaying the guide image is emitted. A display light emitting device characterized in that it is configured to perform continuous output . The display light emitting device according to claim 1 ,
The image output unit displays the guide image when the distance determination determines that the distance is less than the first predetermined distance, and the speed determination determines that the speed is greater than or equal to the predetermined speed. A display light emitting device characterized in that the display light emitting device is configured to continue emitting the display light until it reaches a guide point. The display light emitting device according to claim 1 or 2 ,
If the distance is determined to be equal to or greater than the first predetermined distance in the distance determination, the image output unit outputs display light for displaying the guide image for a predetermined period of time without performing the speed determination. A display light emitting device characterized in that it is configured to perform a stop process of stopping the display light emitting device. The display light emitting device according to any one of claims 1 to 3 ,
The information acquisition unit is configured to be connected to a mobile phone with a built-in GPS receiver and to acquire the distance information and the speed information calculated based on positioning information by the GPS receiver. A display light emitting device. an information acquisition unit that acquires distance information indicating the distance from the current location to a predetermined guide point, direction information indicating the direction of travel at the guide point, and speed information indicating the moving speed from the current location to the predetermined guide point;
An image output that generates a guide image indicating the direction of travel at the guide point based on the direction information received by the information acquisition unit, and emits display light for displaying the guide image on a combiner provided on the helmet. A display light emitting device comprising:
The image output unit determines whether the distance indicated by the distance information acquired by the information acquisition unit is less than a first predetermined distance, and determines whether the distance indicated by the distance information acquired by the information acquisition unit is determined by the speed information acquired by the information acquisition unit. configured to perform a speed determination as to whether or not the moved speed is equal to or higher than a predetermined speed;
Furthermore, the image output unit displays the guide image when the distance determination determines that the distance is less than the first predetermined distance, and the speed determination determines that the speed is greater than or equal to the predetermined speed. While performing a continuous output to continue emitting display light to cause is configured to perform a stop process of emitting display light for displaying the guide image for a predetermined period of time and then stopping, and the distance is determined to be less than the first predetermined distance in the distance determination, and , for displaying the guide image when the moving speed indicated by the speed information acquired by the information acquisition unit decreases below the predetermined speed after the speed determination determines that the speed is equal to or higher than the predetermined speed; A display light emitting device characterized in that the display light emitting device is configured to continue emitting the display light until it reaches a guide point.

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