JP7204473B2 - Display light emitting device - Google Patents

Description

The present invention relates to a display light emitting device that emits display light for projecting a display image in the field of view of a helmet wearer.

Patent Document 1 discloses a display light provided with an image generation unit that generates a display image and an emission unit that emits display light for projecting the display image generated by the image generation unit in the field of view of a helmet wearer. A launch device is disclosed. This display light emitting device generates a display image that displays information such as the traveling direction at the next intersection and the distance to the next intersection.

JP-A-2008-65593

By the way, in the display light emitting device as disclosed in Patent Document 1, there is a demand for displaying a large amount of information on the display image. However, if a large amount of information is always displayed on the display image, the helmet wearer may feel annoyed by the display image.

The present invention has been made in view of such a point, and an object of the present invention is to prevent the helmet wearer from feeling annoyed by the display image.

The present invention acquires speed information indicating the current speed, and provides an image generation unit that generates a display image, and display light for displaying the display image generated by the image generation unit in the field of view of the helmet wearer. A display light emitting device provided with an emitting part for emitting light is targeted, and the following solutions are taken.

That is, in the first invention, the image generation unit determines whether or not a predetermined information reduction condition is satisfied, and when it is determined that the information reduction condition is not satisfied, While operating in a first mode in which an image displaying second information is generated as the display image, when it is determined that the information reduction condition is satisfied, the first information is displayed but the second information is displayed. a speed condition including a condition that the speed indicated by the obtained speed information is equal to or greater than a predetermined threshold is established as the information reduction condition. and the speed condition further includes a condition that the operation in the second mode has not continued for a predetermined time .

As a result, the image generation unit can be operated in a mode in which the second information is not displayed in the display image, so the display image can be displayed more clearly than in the case where the first and second information are always displayed in the display image. It is possible to prevent the helmet wearer from feeling annoyed.

In addition , when traveling at a speed equal to or higher than the predetermined threshold, the amount of information displayed in the display image can be reduced compared to when traveling at a speed lower than the predetermined threshold. It is possible to prevent the user from being an obstacle or feeling annoyed by the displayed image.

Also, the second information can be confirmed by the helmet wearer in generally relatively safe conditions, such as when traveling at a speed below a predetermined threshold or when stopped.

Further, when the operation in the second mode continues for a predetermined period of time, the image generator operates in the first mode. The second information can be checked every predetermined time.

A second invention is the display light emitting device according to the first invention, wherein the display light emitting device further comprises a wireless communication unit for receiving speed information indicating the current speed of the communication device from the communication device. The speed information provided in the helmet and acquired by the image generation unit is the speed information received by the wireless communication unit.

As a result, the helmet does not need to be provided with a speed sensor to acquire the speed information, so that the manufacturing cost of the helmet can be reduced compared to the case where the helmet is provided with a speed sensor .

A third invention is the display light emitting device according to any one of the first invention and the second invention, wherein the information reduction condition is satisfied when an acceleration/deceleration condition that the absolute value of the acceleration is equal to or greater than a predetermined threshold is satisfied. characterized by being

As a result, when the absolute value of the acceleration is equal to or greater than the predetermined threshold, the amount of information displayed in the display image can be reduced compared to when the absolute value of the acceleration is less than the predetermined threshold. It is possible to prevent the displayed image from being an obstacle to confirmation and the helmet wearer from feeling annoyed by the displayed image.

Also, the second information can be confirmed by the helmet wearer in generally relatively safe conditions such as when traveling at a constant speed.

A fourth aspect of the invention is the display light emitting device according to the third aspect, wherein the display light emitting device further comprises a wireless communication unit for receiving, from a communication device, a detection result of an acceleration sensor provided in the communication device. In addition, the image generation unit is provided in a helmet and performs the determination based on the detection result received by the wireless communication unit.

As a result, the helmet does not need to be provided with an acceleration sensor in order to obtain the acceleration, so the manufacturing cost of the helmet can be reduced compared to the case where the helmet is provided with an acceleration sensor.

A fifth invention is characterized in that, in the display light emitting device according to any one of the first to fourth inventions, the information reduction condition is satisfied when a traveling direction condition that a corner point is being passed is established. and

As a result, less information is displayed in the displayed image when passing through a corner point than when not passing through a corner point. In addition, it is possible to prevent the helmet wearer from feeling annoyed by the display image.

In addition, it is possible to allow the helmet wearer to confirm the second information in a generally relatively safe state such as when traveling straight ahead.

A sixth invention is the display light emitting device according to the fifth invention, wherein the display light emitting device further includes a wireless communication unit that receives guide information from the communication device indicating the distance between the current location of the communication device and the corner point. The image generator is provided on a helmet, and the image generator performs the determination based on the guidance information received by the wireless communication unit.

As a result, it is not necessary to provide a gyro sensor on the helmet for determining whether or not the vehicle is passing through a corner point, so the manufacturing cost of the helmet can be reduced compared to the case where the gyro sensor is provided on the helmet.

A seventh aspect of the invention is the display light emitting device according to the sixth aspect, wherein the display light emitting device further comprises a wireless communication unit for receiving the detection result of the gyro sensor provided in the communication device from the communication device. In addition, the image generation unit is provided in a helmet and performs the determination based on the detection result received by the wireless communication unit.

As a result, it is not necessary to provide a gyro sensor on the helmet for determining whether or not the vehicle is passing through a corner point, so the manufacturing cost of the helmet can be reduced compared to the case where the gyro sensor is provided on the helmet.

According to the present invention, it is possible to prevent the helmet wearer from feeling annoyed by the display image.

1 is an external view showing the configuration of a navigation system provided with a display light emitting device according to an embodiment of the present invention; FIG. 1 is a functional block diagram showing the configuration of a navigation system provided with a display light emitting device according to an embodiment of the invention; FIG. FIG. 4 is a diagram showing a display image generated by an image generator in the first mode; FIG. FIG. 10 is a diagram showing a display image generated by an image generator in a second mode; FIG. 4 is a flow chart showing operations performed by the display light emitting device according to the embodiment of the present invention;

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows a navigation system 1 . This navigation system 1 includes a smartphone 10 as a communication device and a helmet 20 .

As shown in FIG. 2, the smartphone 10 includes a wireless communication interface 11 that performs wireless communication using Bluetooth (registered trademark), a GPS receiver 12, and an acceleration sensor 13 that detects acceleration in the XYZ axis directions of the smartphone 10. , and a gyro sensor 14 that detects the angular velocity of rotation of the smartphone 10 . The smartphone 10 also includes a mobile operation system 15 which is the OS of the smartphone 10, and a car navigation service application program (hereinafter referred to as , called a “car navigation app”) 16 are installed. When the car navigation application 16 is executed, the smartphone 10 receives guidance information indicating the distance from the current location to the next guidance point to be reached and the traveling direction at the guidance point, speed information indicating the current speed, and detection by the acceleration sensor 13. Acceleration information indicating the detected acceleration (detection result) is transmitted by wireless communication through the wireless communication interface 11 . It should be noted that the guidance point is switched to the next new guidance point after passing through the guidance point.

A window hole 21 is formed on the front side of the helmet 20 so as to face between the helmet wearer's forehead and chin. Translucent shields 22 are attached to the 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 in the vertical direction. A plurality of switches including a first switch 23 are arranged on the outer surface of the helmet 20 on the left side of the window hole 21 as viewed from the helmet wearer, that is, at positions corresponding to the ears of the helmet wearer. A translucent plate-like combiner 26 is attached from the inside via an attachment member 27 to a portion of the upper edge of the window hole 21 of the helmet 20 that is closer to the right than the center in the left-right direction as seen from the helmet wearer. ing. A display light emitting device 30 according to the embodiment of the present invention and a mirror 28 for projecting the display light emitted by the display light emitting device 30 to a combiner 26 are built in the helmet 20 below the window hole 21 . there is A head-up display device 40 is composed of the display light emitting device 30 , the combiner 26 and the mirror 28 .

As shown in FIG. 2, the display light emitting device 30 includes a Bluetooth module 31 as a wireless communication unit capable of communicating with the smartphone 10 using Bluetooth (registered trademark), and based on information received by the Bluetooth module 31, An image generation unit 32 that generates a display image to be displayed in the field of view of the helmet wearer, and an LCOS (Liquid Crystal on Silicon) 33. The display light emitting device 30 is activated by pressing the first switch 23 for a long time.

The Bluetooth module 31 receives guidance information, speed information, and acceleration information from the wireless communication interface 11 of the smart phone 10 .

Based on the guidance information received by the Bluetooth module 31, the image generation unit 32 generates a display image showing the distance to the guidance point and the like. The image generator 32 can operate in first and second modes. In the first mode, as shown in FIG. 1, and an icon 34c indicating that the time shown on the right is the estimated arrival time at the guidance point and the estimated arrival time 34d at the guidance point as second information is generated as a display image. do. On the other hand, in the second mode, as shown in FIG. 4, the distance 34a indicated in the guidance information and the traveling direction 34b indicated in the guidance information are displayed, but the icon 34c and the estimated arrival time 34d are not displayed. Generate as The image generating unit 32 includes a microcomputer 32a, a flash ROM (Read Only Memory) 32b, and a GDC (Graphics) that generates a display image by combining patterns and the like stored in the flash ROM 32b based on instructions from the microcomputer 32a. Display Controller) 32c.

The LCOS 33 emits display light for displaying the guide image generated by the GDC 32c of the image generator 32 in the field of view of the helmet wearer by the combiner 26. FIG. The emission of display light by the LCOS 33 can be forcibly stopped by pressing the first switch 23 for a short time.

In the navigation system 1 configured as described above, when the display light emitting device 30 is activated, guidance information and speed information are received by the Bluetooth module 31 of the display light emitting device 30 by executing the car navigation application 16 of the smartphone 10 . A display image is generated by the GDC 32c based on the guidance information, and display light corresponding to the display image is emitted from the LCOS 33 and then reflected by the mirror 28. FIG. The display light reflected by the mirror 28 is projected onto the combiner 26 and further reflected by the combiner 26 so as to be displayed in the field of view of the helmet wearer. As a result, the helmet wearer can visually recognize the display image of the display light as a virtual image superimposed on the scenery in the forward field of view through the combiner 26 .

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

First, when a driver of a motorcycle or the like holds the smartphone 10 with the car navigation application 16 activated, wears the helmet 20 and presses and holds the first switch 23, the display light emitting device 30 is activated. do. After being activated, the display light emitting device 30 performs the operation shown in the flowchart of FIG. Execute repeatedly. Note that when the display light emitting device 30 is activated, the value of T indicating the elapsed time from the start of the operation in the second mode is initialized to zero.

In the operation shown in FIG. 5 , first, in step 101 , the Bluetooth module 31 receives the guidance information, speed information, and acceleration information transmitted by the smartphone 10 , and proceeds to step 102 .

At step 102, the microcomputer 32a of the image generation unit 32 acquires the speed information received by the Bluetooth module 31 at step 101, and the condition is established that the speed V indicated by the speed information is equal to or greater than a predetermined threshold TH1. Determine whether or not If the condition that the velocity V is equal to or greater than the threshold TH1 is satisfied, the process proceeds to step 103, while if the condition that the velocity V is equal to or greater than the threshold TH1 is not satisfied, the process proceeds to step . The threshold TH1 can be set to, for example, 20 km/h, but may be set to a value other than 20 km/h.

At step 103, the microcomputer 32a of the image generator 32 continues the second mode operation for a predetermined time TH2 by comparing the elapsed time T from the start of the second mode operation with a predetermined time TH2. It is determined whether or not the condition that the If the elapsed time T is shorter than the predetermined time TH2, that is, if the operation in the second mode has not continued for the predetermined time TH2, the process proceeds to step 104 . On the other hand, if the elapsed time T is equal to or longer than the predetermined time TH2, that is, if the operation in the second mode has continued for the predetermined time TH2, the process proceeds to step 105 .

At step 104, the microcomputer 32a of the image generator 32 determines whether or not the elapsed time T from the start of the operation in the second mode is zero. If the elapsed time T from the start of the operation in the second mode is 0, proceed to step 106, and if the elapsed time T from the start of the operation in the second mode is not 0, step Go to 107.

At step 105, the microcomputer 32a of the image generating section 32 initializes the elapsed time T from the start of the operation in the second mode to 0, and proceeds to step 110. FIG.

At step 106 , the microcomputer 32 a of the image generating section 32 starts measuring (counting up) the elapsed time T, and proceeds to step 107 . After that, the value of the elapsed time T increases with the lapse of time.

At step 107, the image generator 32 operates in the second mode. In other words, the GDC 32c of the image generation unit 32 produces an image that displays the distance 34a indicated in the guidance information and the travel direction 34b indicated in the guidance information, but does not display the icon 34c and the estimated arrival time 34d. Generate as display image.

In step 108, the microcomputer 32a of the image generation unit 32 determines whether the acceleration/deceleration condition is satisfied that the absolute value of the acceleration A indicated in the acceleration information received by the Bluetooth module 31 in step 101 is equal to or greater than a predetermined threshold TH3. determine whether or not When the absolute value of the acceleration A is equal to or greater than the predetermined threshold TH3 and the acceleration/deceleration condition is satisfied, the process proceeds to step 107, while the absolute value of the acceleration A is less than the predetermined threshold TH3 and the acceleration/deceleration condition is satisfied. If not, go to step 109 .

At step 109, the microcomputer 32a of the image generator 32 determines that the direction indicated by the guidance information received by the Bluetooth module 31 at step 101 is a right turn or a left turn, and that the distance indicated by the guidance information is a predetermined comparison. Based on whether or not the value is less than or equal to the value, it is determined whether or not the traveling direction condition that the corner point is being passed is satisfied. The comparison value is set to, for example, 10m, but may be set to a value other than 10m. If the traveling direction indicated by the guidance information is to turn right or turn left, the guidance point is a corner point, so the distance indicated by the guidance information is the distance between the current location and the corner point. If the traveling direction indicated by the guidance information is a right turn or a left turn and the distance indicated by the guidance information is equal to or less than the comparison value, it is determined that the traveling direction condition is established, and the process proceeds to step 107. If the indicated travel direction does not correspond to either a right turn or a left turn, or if the distance indicated by the guidance information exceeds the comparison value, it is determined that the travel direction condition is not satisfied, and the process proceeds to step 105 .

At step 110, the image generator 32 operates in the first mode. In other words, the GDC 32c of the image generation unit 32 displays the distance 34a indicated by the guidance information and the traveling direction 34b indicated by the guidance information according to the instruction of the microcomputer 32a, and the time shown on the right is the estimated time of arrival at the destination. An image displaying an icon 34c indicating that it is and an estimated arrival time 34d at the destination is generated as a display image.

Therefore, according to the present embodiment, the image generator 32 can be operated in a mode in which the icon 34c and the estimated arrival time 34d are not displayed in the display image. is always displayed in the display image, it is possible to prevent the helmet wearer from feeling annoyed by the display image.

In addition, when traveling at a speed equal to or higher than a predetermined threshold, during acceleration/deceleration, and while passing a corner point, the information displayed on the display image can be reduced compared to when the vehicle is traveling straight ahead at a constant speed less than the threshold TH1. Therefore, it is possible to prevent the displayed image from becoming an obstacle when the helmet wearer confirms the scenery outside, or from feeling that the displayed image is annoying.

Also, it is possible to allow the helmet wearer to check the icon 34c and the estimated arrival time 34d in generally relatively safe conditions such as when the vehicle is traveling straight at a constant speed below a predetermined threshold or when the vehicle is stopped.

Further, since the Bluetooth module 31 of the helmet 20 receives the speed information from the smartphone 10, the helmet 20 does not need to be provided with a speed sensor for acquiring the speed information. Therefore, the manufacturing cost of the helmet 20 can be reduced as compared with the case where the helmet 20 is provided with the speed sensor.

Further, since it is determined whether or not the corner point is being passed by using the guidance information received from the smartphone 10 by the Bluetooth module 31 of the helmet 20, it is determined whether or not the corner point is being passed. Therefore, it is not necessary to provide the helmet 20 with a gyro sensor. Therefore, the manufacturing cost of the helmet 20 can be reduced.

Also, since the Bluetooth module 31 of the helmet 20 receives the acceleration information from the smartphone 10, the helmet 20 does not need to be provided with an acceleration sensor to acquire the acceleration. Therefore, the manufacturing cost of the helmet 20 can be reduced compared to the case where the helmet 20 is provided with an acceleration sensor.

Further, even if the speed V is equal to or greater than the threshold TH1, the image generator 32 operates in the first mode if the elapsed time T from the start of the operation in the second mode is equal to or greater than the predetermined time TH2. Therefore, when traveling at a speed equal to or higher than the threshold TH1 continues for a long time, the helmet wearer can be made to check the icon 34c and the estimated arrival time 34d at predetermined intervals.

In the above-described embodiment, in step 109, it is determined whether or not the traveling direction condition is satisfied based on the guidance information. You may make it determine based on information. That is, the angular velocity information is transmitted to the wireless communication interface 11 of the smartphone 10 by wireless communication, received by the Bluetooth module 31 of the helmet 20, and based on the angular velocity information received by the Bluetooth module 31, the micro The computer 32a may make the determination.

In the above embodiment, the condition (information deletion condition) for operating the image generator 32 in the second mode is that the speed V is equal to or greater than the threshold TH1 and The condition is that at least one of the condition that the elapsed time T is shorter than the predetermined time TH2 (speed condition), the acceleration/deceleration condition, and the traveling direction condition is satisfied, but other conditions may be used.

Further, in the above embodiment, the first information is the distance 34a indicated in the guidance information and the traveling direction 34b indicated in the guidance information, and the second information is the estimated arrival time at the guidance point at the time shown on the right. Although the icon 34c indicating the destination and the estimated time of arrival at the guidance point 34d are used, other information may be used. For example, the first and second information may include information other than the information included in the first and second information in the above embodiment, such as the current time, distance to the destination, driving lane, intersection name of the guidance point, etc. may be included.

INDUSTRIAL APPLICABILITY The present invention is useful as a display light emitting device that emits display light to be displayed in the field of view of a helmet wearer.

10 Smartphone (communication device)
20 helmet 30 display light emitting device 31 Bluetooth module (wireless communication unit)
32 image generator 33 LCOS (outgoing unit)

Claims (7)

an image generator that acquires speed information indicating the current speed and generates a display image;
A display light emitting device comprising: an emitting unit emitting display light for projecting a display image generated by the image generating unit in a field of view of a helmet wearer,
The image generation unit determines whether or not a predetermined information reduction condition is satisfied, and when it is determined that the information reduction condition is not satisfied, an image displaying first and second information. is generated as the display image, and when it is determined that the information reduction condition is satisfied, an image that displays the first information but does not display the second information is generated as the display image. operating in a second mode to generate as a display image,
the information reduction condition is satisfied when a speed condition including a condition that the speed indicated by the acquired speed information is equal to or greater than a predetermined threshold is satisfied;
The display light emitting device , wherein the speed condition further includes a condition that the operation in the second mode is not continued for a predetermined time . The display light emitting device according to claim 1 ,
The display light emitting device further includes a wireless communication unit that receives speed information indicating the current speed of the communication device from the communication device, and is provided on the helmet,
The display light emitting device, wherein the speed information acquired by the image generation unit is the speed information received by the wireless communication unit. In the display light emitting device according to claim 1 or 2 ,
The display light emitting device, wherein the information reduction condition is satisfied when an acceleration/deceleration condition that the absolute value of the acceleration is equal to or greater than a predetermined threshold is satisfied. In the display light emitting device according to claim 3 ,
The display light emitting device further includes a wireless communication unit that receives the detection result of the acceleration sensor provided in the communication device from the communication device, and is provided in the helmet,
The display light emitting device, wherein the image generation section performs the determination based on the detection result received by the wireless communication section. In the display light emitting device according to any one of claims 1 to 4 ,
The display light emitting device, wherein the information reduction condition is satisfied when a traveling direction condition that the vehicle is passing through a corner point is satisfied. In the display light emitting device according to claim 5 ,
The display light emitting device further includes a wireless communication unit that receives guidance information indicating the distance between the current location of the communication device and the corner point from the communication device, and is provided on the helmet,
The display light emitting device, wherein the image generation section performs the determination based on the guidance information received by the wireless communication section. In the display light emitting device according to claim 6 ,
The display light emitting device further includes a wireless communication unit that receives the detection result of the gyro sensor provided in the communication device from the communication device, and is provided in the helmet,
The display light emitting device, wherein the image generation section performs the determination based on the detection result received by the wireless communication section.

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