JP7390869B2 - Head-up display equipment and helmets - Google Patents

Description

The present disclosure relates to a head-up display device mounted on a helmet and a helmet equipped with the head-up display device.

Conventionally, by installing a head up display (Head Up Display) device (hereinafter referred to as a "HUD device") on a helmet worn when driving a motorcycle, it is possible to provide information to the user (driver) wearing the helmet. On the other hand, it is known that various information such as vehicle information such as vehicle speed, map information from a navigation system, and warning information are displayed as virtual images in the front of the field of vision to improve convenience and safety when driving a vehicle.

A HUD device mounted on a helmet includes a projection module that projects display light according to the information to be displayed, and a combiner that reflects the display light projected by the projection module toward the eyes of the user who is the wearer of the helmet. Be prepared. The combiner is made of a half mirror, and is placed in a position where the user can see in front of the user within a window opening provided at the front of the helmet, and transmits light from in front of the user. Therefore, the user can visually recognize the virtual image (display image) created by the display light in a state where it is superimposed on the scenery through the combiner. An example of such a HUD device is disclosed in Patent Document 1.

JP2017-030530A

Incidentally, there are individual differences in the position of the user's line of sight relative to the window opening while wearing a helmet. In the above-mentioned HUD device, the position of the display light projected onto the combiner does not match the user's line of sight, and the display light reflected by the combiner travels in a direction out of the user's front field of vision, causing a portion of the display image to be distorted. Alternatively, the screen may not be visible at all or may not be displayed in the optimal position for driving assistance. For this reason, it is required to enable the user to clearly see the displayed image via the combiner at a desired position, regardless of individual differences in the line of sight position when wearing a helmet.

The technology of the present disclosure has been made in view of the above, and its purpose is to provide a user with a display image via a projected object, regardless of individual differences in the line of sight when wearing a helmet. The purpose is to make it possible to visually recognize the image at a desired position.

In order to achieve the above object, in the technology of the present disclosure, the direction of the optical axis of the display light traveling from the projection module toward the object to be projected can be adjusted.

Specifically, the technology of the present disclosure is directed to a HUD device mounted on a helmet.

The HUD device according to the technology of the present disclosure allows a user to visually recognize a projection object as a virtual image through the projection object, which is placed in front of the user wearing a helmet and has both light transmittance and light reflectivity. The present invention includes a projection module that projects display light for forming a display image, and an optical axis adjustment mechanism that is configured to be able to adjust the direction of the optical axis of the display light directed from the projection module toward the object to be projected.

According to this configuration, since an optical axis adjustment mechanism is provided that is configured to be able to adjust the direction of the optical axis of the display light directed from the projection module toward the object to be projected, the direction of the optical axis of the display light directed from the projection module to the object to be projected can be adjusted. The projection position of the display light onto the projector can be adjusted. Thereby, the user can clearly see the displayed image via the projection object at a desired position, regardless of individual differences in the line of sight position when wearing a helmet.

In the above HUD device, it is preferable that the optical axis adjustment mechanism is configured to be able to adjust the direction of the optical axis of the display light directed toward the projecting object by operating from the lower side of the helmet.

According to this configuration, the direction of the optical axis of the display light directed toward the projecting object can be adjusted by operating the optical axis adjustment mechanism from the bottom of the helmet, so the user can adjust the direction of the optical axis of the display light toward the projecting object by operating the optical axis adjustment mechanism from the bottom of the helmet. The direction of the optical axis can be easily adjusted.

Further, the optical axis adjustment mechanism is configured to be able to adjust the direction of the optical axis of the display light directed toward the projection target in a first direction intersecting the optical axis and a second direction intersecting the first direction. It is preferable that

According to this configuration, since the direction of the optical axis of the display light directed toward the projection target can be adjusted in two directions that intersect with each other, it is possible to increase the degree of freedom in the direction in which the optical axis is adjusted. Thereby, the projection position of the display light onto the object to be projected can be adjusted even more accurately in accordance with the line of sight position of the user wearing the helmet.

Further, the projection module may include a light emitter that emits display light, and a mirror that reflects the display light emitted by the light emitter toward the object to be projected. The optical axis adjustment mechanism may be configured to be able to adjust the direction of the optical axis of the display light directed from the mirror toward the projection target by rotating the mirror around a predetermined rotation axis. In this case, it is preferable that the predetermined rotation axis be set at or near a location where the direction of a virtual line extending the optical axis of the display light emitted from the light emitter intersects with the mirror.

According to this configuration, the mirror is rotated to adjust the direction of the optical axis of the display light directed from the mirror toward the object to be projected, and the rotation axis as the center of the rotation operation of the mirror is extended from the optical axis. Since it is set at a location where the virtual line and the mirror intersect or near the location, distortion that occurs in the displayed image due to rotating the mirror can be reduced.

The light emitter and the mirror may be provided on the helmet separately from each other. The optical axis adjustment mechanism is configured to be able to adjust the direction of the optical axis of the display light directed from the mirror toward the object to be projected by rotating the mirror around a predetermined rotation axis with the light emitter fixed. Preferably.

With this configuration, the direction of the optical axis of the display light directed from the mirror toward the object to be projected can be adjusted by rotating the mirror without rotating the light emitter, making the optical axis adjustment mechanism compact. This is advantageous in suppressing the increase in size and weight of the helmet caused by mounting the HUD device.

Moreover, the light emitter and the mirror may be provided in the same case and unitized. The optical axis adjustment mechanism may be configured to be able to adjust the direction of the optical axis of the display light directed from the mirror toward the projection target by rotating the mirror together with the light emitter around a predetermined rotation axis.

Further, the technology of the present disclosure is directed to a helmet equipped with a HUD device.

In the helmet according to the technology of the present disclosure, the HUD device allows the user to view the projection object as a virtual image through the projection object, which is placed in front of the user's eyes and has both light transmittance and light reflectivity. The present invention includes a projection module that projects display light for forming a visible display image, and an optical axis adjustment mechanism that is configured to be able to adjust the direction of the optical axis of the display light that is directed from the projection module toward the object to be projected.

According to this configuration, since an optical axis adjustment mechanism is provided that is configured to be able to adjust the direction of the optical axis of the display light directed from the projection module toward the object to be projected, the direction of the optical axis of the display light directed from the projection module to the object to be projected can be adjusted. The projection position of the display light onto the projector can be adjusted. Thereby, the user can clearly see the displayed image via the projection object at a desired position, regardless of individual differences in the line of sight position when wearing a helmet.

According to the HUD device and the helmet equipped with the HUD device according to the technology of the present disclosure, it is possible to provide a user with a display image via a projected object at a desired position, regardless of individual differences in the line of sight position when wearing a helmet. It can be visually recognized.

FIG. 1 is a schematic overall configuration diagram of an information presentation system according to a first embodiment. FIG. 2 is a schematic block diagram of the information presentation system according to the first embodiment. FIG. 3 is a front view of a helmet equipped with the HUD device according to the first embodiment. FIG. 4 is a side view of a helmet equipped with the HUD device according to the first embodiment. FIG. 5 is a plan view showing the configuration of the optical axis adjustment mechanism in the HUD device according to the first embodiment. FIG. 6 is a side view of the optical axis adjustment mechanism in the HUD device according to the first embodiment, viewed from the front. FIG. 7 is a side view of the optical axis adjustment mechanism in the HUD device according to the first embodiment, viewed from the direction indicated by VII in FIG. FIG. 8 is a diagram corresponding to FIG. 6 showing a state of the optical axis adjustment mechanism included in the HUD device according to the first embodiment when the direction of the optical axis of display light reflected by the concave mirror is adjusted to the left. FIG. 9 is a front view of the optical axis adjustment mechanism of a helmet in which the HUD device according to the first embodiment is mounted in the state shown in FIG. 8. FIG. 10 is a diagram corresponding to FIG. 6 showing a state of the optical axis adjustment mechanism included in the HUD device according to the first embodiment when the direction of the optical axis of display light reflected by the concave mirror is adjusted to the right. FIG. 11 is a front view of the optical axis adjustment mechanism of a helmet in which the HUD device according to the first embodiment is mounted in the state shown in FIG. 10. FIG. 12 is a diagram corresponding to FIG. 7 showing a state of the optical axis adjustment mechanism included in the HUD device according to the first embodiment when the direction of the optical axis of display light reflected by the concave mirror is adjusted upward. FIG. 13 is a side view of the optical axis adjustment mechanism of the helmet in which the HUD device according to the first embodiment is mounted in the state shown in FIG. 12. FIG. 14 is a diagram corresponding to FIG. 7 showing a state of the optical axis adjustment mechanism included in the HUD device according to the first embodiment when the direction of the optical axis of the display light reflected by the concave mirror is adjusted downward. . FIG. 15 is a side view of the optical axis adjustment mechanism of a helmet in which the HUD device according to the first embodiment is mounted in the state shown in FIG. 14. FIG. 16 is a front view of a helmet equipped with a HUD device according to the second embodiment. FIG. 17 is a side view of a helmet equipped with a HUD device according to the second embodiment. FIG. 18 is a front view showing a state in which the direction of the optical axis of the display light reflected by the concave mirror is adjusted to the left by the optical axis adjustment mechanism of a helmet equipped with the HUD device according to the second embodiment. be. FIG. 19 is a front view showing a state in which the direction of the optical axis of the display light reflected by the concave mirror is adjusted to the right by the optical axis adjustment mechanism of a helmet equipped with the HUD device according to the second embodiment. be. FIG. 20 is a side view showing a helmet equipped with the HUD device according to the second embodiment, when the direction of the optical axis of the display light reflected by the concave mirror is adjusted upward by the optical axis adjustment mechanism. be. FIG. 21 is a side view showing a helmet equipped with the HUD device according to the second embodiment, when the direction of the optical axis of the display light reflected by the concave mirror is adjusted downward by the optical axis adjustment mechanism. It is.

Hereinafter, exemplary embodiments will be described in detail based on the drawings. In the following embodiments, for convenience, regarding a helmet and a HUD device mounted on the helmet, the upper side in the direction corresponding to the upper and lower sides of the user's face wearing the helmet will be referred to as "upper", and the lower side will be referred to as "lower". The front side in the direction corresponding to the front and back of the user's face wearing the helmet is referred to as the "front", and the rear side is referred to as the "rear". The left side is called "left" and the right side is called "right."

《First embodiment》
In this first embodiment, regarding a HUD device according to the technology of the present disclosure and a helmet equipped with the HUD device, a combiner provided separately from a shield of the helmet is used, and a display light for forming a display image on the combiner is used. As an example, a projection module for projecting is provided with a light emitter that emits display light and a concave mirror that reflects the display light emitted by the light emitter toward a combiner, which are separated from each other. explain.

The HUD device according to the first embodiment constitutes an information presentation system that presents information contributing to driving support to a rider (user) of a motorcycle.

<Configuration of information presentation system>
FIG. 1 is a schematic overall configuration diagram of an information presentation system 1 according to the first embodiment. FIG. 2 is a schematic block diagram of the information presentation system 1 according to the first embodiment. In FIG. 1, the two-dot chain arrow indicates the path and traveling direction of the display light, and the one-dot chain line indicates the optical axis LX of the display light. Note that these matters also apply to FIGS. 4 to 15, which will be referred to later.

As shown in FIGS. 1 and 2, the information presentation system 1 includes a HUD device 3 mounted on a helmet 101 of a motorcycle, and an information terminal 5 that provides various information that can be displayed on the HUD device 3. ing.

- Information terminal configuration -
As the information terminal 5, a small multifunctional mobile phone called a smartphone is used. This information terminal 5 includes a GPS (Global Positioning System) receiver 7 that receives radio waves from a GPS satellite S and generates positioning information, a wireless communication module 9 that performs wireless communication with the outside, and an input/output device. It includes a display device 11 with a touch panel, a microcomputer 13 that comprehensively controls the operation of the information terminal 5, and a power source 15 that supplies the power necessary to operate the information terminal 5.

The GPS receiver 7 includes a GPS antenna (not shown) and the like. The GPS antenna receives GPS signals transmitted from multiple GPS satellites S launched into earth orbit. The GPS receiver 7 acquires information on the current position (for example, latitude, longitude, and altitude) of the information terminal 5 based on the GPS signal received by the GPS antenna. In response to a request from the microcomputer 13, the GPS receiver 7 stores the measured position information of the information terminal 5 in a memory 23 included in the microcomputer 13, and updates it sequentially.

The wireless communication module 9 includes a network communication section 17 that communicates with an external network N that is a wide area communication network such as the Internet, and a short-range communication section 19 that communicates wirelessly with the HUD device 3 at a short distance.

The network communication unit 17 has a wireless LAN (Local Area Network) function such as WiFi (Wireless Fidelity (registered trademark)) and a communication function based on a mobile communication standard such as LTE (Long Time Evolution (registered trademark)). In response to a request from the microcomputer 13, the network communication unit 17 receives map information from the external network N, road information regarding construction work, traffic congestion, etc., information on surrounding facilities based on the current position acquired by the GPS receiver 7, Net information such as disaster information is received and temporarily stored in a memory 23 included in the microcomputer 13.

The short-range communication unit 19 has a communication function based on a short-range wireless communication standard such as Bluetooth (registered trademark). In response to a request from the microcomputer 13, the short-range communication section 19 receives position information of the information terminal 5 acquired by the GPS receiver 7, network information acquired by the network communication section 17, and various applications described below. The memory included in the microcomputer 13 stores various information including application information acquired by software (hereinafter referred to as "app") and information on display settings such as display items and brightness for the display image displayed by the HUD device 3. 23 and transmits it to the HUD device 3 by wireless communication.

The display device 11 with a touch panel is an electronic device in which a display device that displays an image on the screen 21 of the information terminal 5 and a touch panel that detects the position on the screen 21 touched by the user (touched position) are integrated. It has both an image output function and a user operation input function. In the information terminal 5, by touching the display device 11 with a touch panel, it is possible to execute various applications and to set the display on the HUD device 3 when executing a cooperative application 33, which will be described later.

The microcomputer 13 includes a memory 23 and a CPU (Central Processing Unit) 25. The memory 23 temporarily or permanently stores various information including programs for operating the information terminal 5. This memory 23 is typically realized by a combination of RAM (Random Access Memory) and ROM (Read Only Memory). The various programs stored in the memory 23 include a mobile OS (Operating System) and a plurality of applications that operate on the mobile OS to realize specific functions.

The plurality of applications include a time application 27, a speed application 29, a navigation application (hereinafter referred to as a "navi application") 31, and a cooperation application 33. These multiple applications 27, 29, 31, and 33 are installed in the information terminal 5 in advance and stored in the memory 23.

The time application 27 is software that obtains the current time. This time application 27 uses, for example, time stamps obtained through communication with the base station and time information obtained by the GPS receiver 7, as well as NITZ (Network Identity and Time Zone) and NTP (Network Time Protocol). The current time is obtained using time synchronization technology such as

The speed application 29 is software that detects the moving speed of the information terminal 5. This speed application 29 detects the moving speed of the information terminal 5 based on the position information of the information terminal 5 acquired by the GPS receiver 7, for example.

The navigation application 31 is software that provides route guidance to a destination set by the user. The navigation application 31 determines the destination based on, for example, map information acquired by the network communication unit 17 or stored in advance in the memory 23 and position information of the information terminal 5 acquired by the GPS receiver 7. Provide route guidance to.

The cooperation application 33 cooperates with the HUD device 3 using wireless communication by the short-range communication unit 19, and transmits various information such as application information, internet information, and display setting information on the HUD device 3 to the HUD device 3. , is software for realizing the display function of the HUD device 3.

This cooperation application 33 allows display settings of the HUD device 3 to be performed. Specifically, as display settings, items to be displayed on the HUD device 3 can be set from a plurality of items including the current time, travel speed, and route guidance information (navigation information), and display images ( You can also set the brightness of the HUD display (hereinafter referred to as "HUD display"). Information on the display settings set by the cooperation application 33 is stored in the memory 23.

The CPU 25 is typically implemented using an IC (Integrated Circuit), an LSI (Large Scale Integration), or the like. This CPU 25 performs calculations for processing various data, and controls the operation of the wireless communication module 9 and the display device 11 with a touch panel, and the execution of various applications 27, 29, 31, and 33.

The microcomputer 13 uses the function of the CPU 25 to cause the GPS receiver 7 to acquire current position information, and causes the network communication unit 17 to establish a connection with the external network N to collect network information, and also executes the cooperative application 33. , the short-range communication unit 19 establishes a connection with the HUD device 3, and the application information, internet information, and display setting information obtained through various processes according to the execution of the time application 27, speed application 29, and navigation application 31 are transmitted. is transmitted to the HUD device 3.

The power source 15 is constituted by a secondary battery such as a lithium ion battery. The power source 15 is electrically connected to the wireless communication module 9, the display device 11 with a touch panel, and the microcomputer 13 via wiring. When the information terminal 5 is turned on using a power switch (not shown), power is supplied from the power supply 15 to the wireless communication module 9, the display device 11 with a touch panel, and the microcomputer 13, and a predetermined operation is performed according to the user's operation. It is designed to behave as follows.

<Configuration of HUD device>
FIG. 3 is a front view of the helmet 101 on which the HUD device 3 according to the first embodiment is mounted. FIG. 4 is a side view of the helmet 101 on which the HUD device 3 according to the first embodiment is mounted. The HUD device 3 is a projection type display device that projects visual information in the field of view of a user wearing a helmet 101.

The helmet 101 on which the HUD device 3 according to the first embodiment is mounted is a full-face helmet, and is a helmet main body having a window opening 103 formed in the front part to provide visibility to the user wearing the helmet. 105, and a transparent shield 107 which is replaceably attached to the helmet body 105 and can open and close the window opening.

Although not shown, the helmet main body 105 has a structure in which a liner (not shown) as a shock absorbing material made of foamed polystyrene or the like is provided inside a shell (cap body) constituting the outer shell. ing. The shield 107 is rotatably attached to the left and right sides of the window opening 103 in the helmet main body 105 using fasteners 109 or the like within a predetermined angular range, and opens and closes the window opening 103 by rotating in the vertical direction. It has become.

The shield 107 has the function of blocking foreign matter such as dust, wind, ultraviolet rays, etc. that enter through the window opening 103 when the window opening 103 is closed. This shield 107 can be removed by removing a fastener 109. For the shield 107, various shields with different light transmittances such as a colorless transparent shield, a colored transparent shield such as a smoke shield, and a mirror shield can be adopted depending on the brightness of the external environment depending on the weather and day and night. .

As shown in FIGS. 1 to 4, the HUD device 3 includes a wireless communication module 35 that performs wireless communication with the outside, a control module 37 that controls the display function of the HUD device 3, and generates display light. A projection module 39 for projecting images, a combiner unit 41 for allowing the user to visually recognize a display image formed by display light projected from the projection module 39 as a virtual image, and an operation unit 43 for inputting operations by the user to the HUD device 3. and a power source 45 that supplies the power necessary to operate the HUD device 3.

The wireless communication module 35 has a communication function based on a short-range wireless communication standard such as Bluetooth. This wireless communication module 35 receives internet information, application information, and display setting information transmitted from the short-range communication section 19 of the information terminal 5 in response to a request from the microcomputer 53 included in the control module 37. It is stored in the memory 49 included in the microcomputer 53. This wireless communication module 35 is provided on a PCB together with a control module 37, and is built in as a PCB module 47 on the left side of the jaw 111 of the helmet body 105.

The control module 37 controls the generation of display light at the light emitter 57 included in the projection module 39 . This control module 37 includes a microcomputer 53 including a memory 49 and a CPU 51, and a GDC (Graphics Display Controller) 55, which is an integrated circuit in charge of processing related to image display.

The memory 49 temporarily or permanently stores various information including programs for operating the HUD device 3. This memory 49 also stores network information, application information, and display setting information received by the wireless communication module 35. The memory 49 is typically realized by a combination of RAM and ROM.

The CPU 51 is typically implemented using an IC, an LSI, or the like. This CPU 51 performs calculations for processing various data and controls the operations of the wireless communication module 35, projection module 39, and GDC 55.

The GDC 55 generates display image data to be visually recognized by the user via a combiner 95 included in the combiner unit 41 based on the internet information, application information, and display setting information stored in the memory 49. The display image data generated by the GDC 55 is image data representing information on items set in the display settings of the cooperation application 33 of the information terminal 5. The microcomputer 53 uses the function of the CPU 51 to cause the GDC 55 to generate display image data and output the image signal to the light emitter 57 included in the projection module 39.

The projection module 39 is built into the jaw 111 of the helmet body 105. The projection module 39 includes a light emitter 57 that generates and emits display light corresponding to a display image based on an image signal input from the GDC 55, and a light emitter 57 that transmits the display light emitted by the light emitter 57 to the combiner unit 41. It includes a concave mirror 59 that reflects toward the included combiner 95, and an optical axis adjustment mechanism 61 configured to be able to adjust the direction of the optical axis LX of the display light reflected by the concave mirror 59. The light emitter 57, the concave mirror 59, and the optical axis adjustment mechanism 61 are provided separately on both left and right sides of the jaw 111 of the helmet 101.

The light emitter 57 is built in at a position near the PCB module 47 on the left side of the jaw 111 of the helmet body 105. Although not shown, the light emitter 57 includes a light source such as an LED (Light Emitting Diode), a display element consisting of a reflective display panel such as an LCOS (Liquid Crystal On Silicon), an optical lens such as a convex lens or a concave lens, and a diffuser plate. , and a plurality of optical members such as a polarizing beam splitter (PBS). The light emitter 57 generates display light with a light intensity such that the display image displayed by the HUD device 3 has a brightness level set on the information terminal 5, and directs the generated display light toward the concave mirror 59. and emit light.

The concave mirror 59 is built into the right side of the jaw 111 of the helmet body 105. This concave mirror 59 has a free-form reflecting surface 63 (illustrated as a flat surface in FIG. 3 and the like) having no rotational symmetry. The concave mirror 59 reflects the display light received from the light emitter 57 toward the combiner 95 included in the combiner unit 41 located above by its reflecting surface 63, and the display image visually recognized by the user during operation. Format the image so that it has the appropriate size and position for display.

The optical axis adjustment mechanism 61 is provided integrally with the concave mirror 59. As shown in FIGS. 5 to 7, this optical axis adjustment mechanism 61 is capable of rotating the concave mirror 59 over a predetermined angular range around a first rotation axis Xa and a second rotation axis Xb that are orthogonal to each other. a holder 65 for holding the concave mirror 59 held in the holder 65, a leaf spring member 67 as an attitude maintaining member for maintaining the attitude of the concave mirror 59 held by the holder 65, and an attachment for rotating the concave mirror 59 via the leaf spring member 67. A first bolt 69a and a second bolt 69b are provided as biasing parts that apply force.

The holder 65 includes an inner frame body 71 that rotatably holds the concave mirror 59 around a first rotation axis Xa, and an inner frame body 71 that holds the inner frame body 71 together with the concave mirror 59 rotatably around a second rotation axis Xb. It is provided with an outer frame body 73. Here, the first rotation axis Xa extends in the front-rear direction and defines a point where a virtual line LX', which is a virtual extension of the optical axis LX of the display light emitted from the light emitter 57, intersects with the concave mirror 59. It is set to pass. The second rotation axis Xb extends diagonally from the lower left side to the upper right side, and is connected to a virtual line LX' that is a virtual extension of the optical axis LX of the display light emitted from the light emitter 57 and the concave mirror 59. It is set to pass through the intersection of

The inner frame 71 is provided so as to surround the outer periphery of the concave mirror 59. On both sides of the concave mirror 59 in the front-rear direction, a shaft portion 75 that projects outward is provided at the center in the up-down direction. The inner frame 71 is provided with a fitting recess 77 into which each shaft portion 75 of the concave mirror 59 is fitted. The concave mirror 59 is held rotatably about a first rotation axis Xa passing through the center of both shaft parts 75 with respect to the inner frame 71 by fitting each shaft part 75 into a fitting recess 77. There is.

The outer frame 73 is provided so as to surround the outer periphery of the inner frame 71. Attachment holes 79 are formed on both sides of the inner frame body 71 in the up-down direction, passing through the outside and inside of the frame at the center in the front-rear direction. Attachment holes 81 are formed on both sides of the outer frame body 73 in the vertical direction at locations corresponding to the attachment holes 79 of the inner frame body 71, passing through the outer and inner sides of the frame body. The outer frame body 73 is constructed by inserting a fastener 83 into the inner frame body 71 from the outside of the frame body of each attachment hole 81 to the attachment hole 79 of the corresponding inner frame body. It is rotatably held around a second rotation axis Xb passing through the center.

The leaf spring member 67 is arranged on the back side of the holder 65 and has the same inclined position as the holder 65. The leaf spring member 67 includes a base plate portion 85 and a plurality of leaf springs 87a, 87b, 87c, and 87d formed by cutting and raising the base plate portion 85. The plurality of leaf springs 87a, 87b, 87c, and 87d include a first leaf spring 87a provided at the upper left position of the base plate portion 85, and a second leaf spring 87b provided at the lower right position of the base plate portion 85. , a third leaf spring 87c provided on the front side of the base plate portion 85, and a fourth leaf spring 87d provided on the rear side of the base plate portion 85.

The first leaf spring 87a is in contact with a position 90a on the upper right side of the back surface of the concave mirror 59, which corresponds to the first rotation axis Xa. This first leaf spring 87a constantly biases the concave mirror 59 from its back surface to the front side. The second leaf spring 87b is in contact with a lower left portion 90b on the back surface of the concave mirror 59, which corresponds to the first rotation axis Xa. This second leaf spring 87b is biased in a direction away from the concave mirror 59, but the first bolt 69a on the back side restricts its displacement in the same direction, so that the first leaf spring 87a The back surface of the concave mirror 59, which is about to rotate around the first rotation axis Xa, is received and supported by the urging force.

The third leaf spring 87c is in contact with a location 90c on the front side corresponding to the second rotation axis Xb on the back surface of the concave mirror 59. This third leaf spring 87c constantly biases the concave mirror 59 from its back surface to the front side. The fourth leaf spring 87d is in contact with a rear portion 90d on the back surface of the concave mirror 59 corresponding to the second rotation axis Xb. This fourth plate spring 87d is biased in a direction away from the concave mirror 59 to the back side, but its displacement in the same direction is restricted by the second bolt 69b on the back side, so that the third plate spring 87d is biased away from the concave mirror 59. The back surface of the concave mirror 59, which is about to rotate around the second rotation axis Xb, is received and supported by the biasing force of the spring 87c.

The first bolt 69a and the second bolt 69b are attached to a mounting plate 89 arranged on the back side of the leaf spring member 67. The mounting plate 89 is formed with insertion holes 91 through which the first bolt 69a and the second bolt 69b are inserted, and two weld nuts 93 whose insides communicate with the respective insertion holes 91 are provided. ing. The first bolt 69a and the second bolt 69b are attached to the mounting plate 89 by being inserted into corresponding insertion holes 91 and screwed into weld nuts 93.

The tip of the shaft portion of the first bolt 69a is in contact with the back surface of the second leaf spring 87b. The head of the first bolt 69a is placed on the back side of the mounting plate 89, and can be inserted into the working hole 115 provided in the helmet body 105 by operating from the bottom of the helmet 101 using a tool such as a screwdriver. It is designed so that it can be screwed into the back or pulled out to the front. By screwing the first bolt 69a to the rear side, a biasing force can be applied to the concave mirror 59 via the second leaf spring 87b. On the other hand, by pulling out the first bolt 69a toward the front, the biasing force applied to the concave mirror 59 via the second leaf spring 87b can be weakened or eliminated.

The tip of the shaft portion of the second bolt 69b is in contact with the back surface of the fourth leaf spring 87d. The head of the second bolt 69b is placed on the back side of the mounting plate 89, and can be opened in the working hole 115 provided in the helmet body 105 by operating from the underside of the helmet 101 using a tool such as a screwdriver. It is designed so that it can be screwed into the back or pulled out to the front. By screwing the second bolt 69b to the rear side, a biasing force is applied to the concave mirror 59 via the fourth leaf spring 87d. On the other hand, by pulling out the second bolt 69b toward the front, the biasing force applied to the concave mirror 59 via the fourth leaf spring 87d can be weakened or eliminated.

FIG. 8 is a diagram corresponding to FIG. 6 showing a state of the optical axis adjustment mechanism 61 when the direction of the optical axis LX of the display light reflected by the concave mirror 59 is adjusted to the left. FIG. 9 is a front view of the helmet 101 when the optical axis adjustment mechanism 61 is in the state shown in FIG. 8. FIG. 10 is a diagram corresponding to FIG. 6 showing a state of the optical axis adjustment mechanism 61 when the direction of the optical axis LX of the display light reflected by the concave mirror 59 is adjusted to the right. FIG. 11 is a front view of the helmet 101 when the optical axis adjustment mechanism 61 is in the state shown in FIG. 10.

In the optical axis adjustment mechanism 61, as shown in FIG. 8, when the first bolt 69a is screwed in, the concave mirror 59 is moved to the first position by the urging force acting through the second leaf spring 87b. The reflective surface 63 rotates in a direction upward against the biasing force from the leaf spring 87a. As a result, as shown in FIG. 9, the direction of the optical axis LX of the display light traveling from the concave mirror 59 to the combiner 95 included in the combiner unit 41 is displaced to the right.

In addition, in the optical axis adjustment mechanism 61, as shown in FIG. 10, when the first bolt 69a is pulled out, the concave mirror 59 moves the reflecting surface 63 to the left due to the urging force from the first leaf spring 87a. Rotate in the direction you are pointing. As a result, as shown in FIG. 11, the direction of the optical axis LX of the display light traveling from the concave mirror 59 to the combiner 95 included in the combiner unit 41 is displaced to the left.

FIG. 12 is a diagram corresponding to FIG. 7 showing a state of the optical axis adjustment mechanism 61 when the direction of the optical axis LX of the display light reflected by the concave mirror 59 is adjusted upward. FIG. 13 is a side view of the helmet 101 when the optical axis adjustment mechanism 61 is in the state shown in FIG. 12. FIG. 14 is a diagram corresponding to FIG. 7 showing a state of the optical axis adjustment mechanism 61 when the direction of the optical axis LX of the display light reflected by the concave mirror 59 is adjusted downward. FIG. 15 is a side view of the helmet 101 when the optical axis adjustment mechanism 61 is in the state shown in FIG. 14.

In the optical axis adjustment mechanism 61, as shown in FIG. 12, when the second bolt 69b is screwed in, the concave mirror 59 is moved to the third position by the urging force acting through the fourth leaf spring 87d. The reflecting surface 63 rotates in a direction toward the rear side against the urging force from the leaf spring 87c. As a result, as shown in FIG. 13, the direction of the optical axis LX of the display light traveling from the concave mirror 59 to the combiner 95 included in the combiner unit 41 is displaced to the rear side.

In addition, in the optical axis adjustment mechanism 61, as shown in FIG. 14, when the second bolt 69b is pulled out, the concave mirror 59 directs the reflective surface 63 toward the front side by the urging force from the third leaf spring 87c. Rotate in the direction. As a result, as shown in FIG. 15, the direction of the optical axis LX of the display light directed from the concave mirror 59 toward the combiner 95 included in the combiner unit 41 is displaced toward the front.

In this way, in the optical axis adjustment mechanism 61, the direction of the optical axis LX of the display light directed from the concave mirror 59 toward the combiner 95 included in the combiner unit 41 can be changed from side to side by screwing in and pulling out the first bolt 69a. direction (first direction), and by screwing in and pulling out the second bolt 69b, the optical axis LX of the display light heading from the concave mirror 59 toward the combiner 95 included in the combiner unit 41. can be adjusted in the front-rear direction (second direction). Thereby, the projection position of the display light onto the combiner 95 included in the combiner unit 41 can be adjusted vertically and horizontally.

The combiner unit 41 includes a combiner 95 that receives the display light reflected by the concave mirror 59 from below and reflects it in a direction visible to the user, and a combiner 95 that is positioned in front of the eyes of the user who wears the helmet 101. A support mechanism 97 is provided.

The combiner 95 is a transparent or semi-transparent plate-like component, and has a semi-transparent reflective surface 96 that is a free-form surface (planar in the figure) that does not have rotational symmetry. Combiner 95 is arranged so as to be located inside shield 107 which is in a closed state. The combiner 95 is a projection object that has both light transmittance and light reflectivity, and is constituted by a half mirror. A half mirror has the property of reflecting part of the incident light and transmitting part of it.

The support mechanism 97 supports the combiner 95 at a position within the window opening 103 provided at the front of the helmet body 105 and within the user's front view. The combiner 95 is disposed in front of the user's right eye E, and a support mechanism 97 causes the semi-transparent reflective surface 96 to be disposed on the user's face side, with the rear end positioned upward and the front end positioned downward. Supported in a forward leaning position.

The support mechanism 97 has a stay 98 that extends in the vertical direction. The upper side of the stay 98 is held by a holder (not shown) built into the forehead 113 of the helmet body 105. A combiner 95 is connected to the lower end of the stay 98 via a rotating shaft 99 that extends in the left-right direction. The support mechanism 97 is capable of adjusting the direction of the semi-transparent reflective surface 96 by rotating the combiner 95 around the rotation axis 99.

Although not shown, the operation unit 43 is provided, for example, at a location corresponding to the PCB module 47 of the helmet body 105. Although not shown, the operation unit 43 includes a power switch and an operation switch. The power switch is a push-button switch that has the function of turning the power of the HUD device 3 on and off. The operation switch is a push button type switch that has the function of switching the display of the HUD device 3 on and off.

The power source 45 is built into the back of the head of the helmet body 105. This power source 45 is constituted by a secondary battery such as a lithium ion battery. The power source 45 is electrically connected to the wireless communication module 35, the control module 37, and the light emitter 57 via wiring. When the operation unit 43 turns on the power switch, the HUD device 3 supplies power from the power source 45 to the wireless communication module 35, the control module 37, and the light emitter 57. The display operates according to whether the display is turned on or off.

<Operation of information presentation system>
In the information presentation system 1 having the above configuration, when the HUD device 3 is powered on and the cooperative application 33 is executed on the information terminal 5, the HUD device 3 receives information on the internet, application information, and display settings. . Then, based on the received internet information and application information, the GDC 55 generates display image data corresponding to preset items included in the display setting information. At this time, when the display of the HUD device 3 is in the on state, the light emitter 57 emits display light corresponding to the display image data generated by the GDC 55 at the brightness level of the HUD display set on the information terminal 5. is generated with a light intensity corresponding to . This display light is emitted from the light emitter 57, reflected by the concave mirror 59, projected onto the combiner 95, and further reflected by the combiner 95 so as to enter the user's field of vision. As a result, the user can visually recognize the display image formed by the display light as a virtual image, superimposed on the scenery in the front view through the combiner 95.

According to the HUD device 3 and the helmet 101 equipped with the HUD device 3 according to the first embodiment, the optical axis is configured such that the direction of the optical axis LX of the display light directed from the concave mirror 59 of the projection module 39 toward the combiner 95 can be adjusted. Since the adjustment mechanism 61 is provided, the projection position of the display light onto the combiner 95 can be adjusted in accordance with the line of sight position of the user wearing the helmet 101. Thereby, the user can clearly see the display image via the combiner 95 at a desired position, regardless of individual differences in the line of sight position when wearing the helmet 101.

Moreover, according to the HUD device 3 and the helmet 101 equipped with the same according to the first embodiment, the direction of the optical axis LX of the display light directed from the concave mirror 59 toward the combiner 95 can be adjusted by rotating the light emitter 57. Since this can be done by rotating the concave mirror 59 without moving, the optical axis adjustment mechanism 61 can be realized compactly, and the increase in size and weight of the helmet 101 caused by mounting the HUD device 3 can be suppressed. It is advantageous to do so.

《Second embodiment》
In this second embodiment, regarding a HUD device according to the technology of the present disclosure and a helmet equipped with the same, a combiner provided separately from a shield of the helmet is used, and a display light for forming a display image on the combiner is used. A projection module for projecting is a unit in which a light emitter that emits display light and a concave mirror that reflects display light emitted by the light emitter toward a combiner are provided in the same case. This will be explained using an example.

The HUD device 3 and the helmet 101 equipped with the HUD device 3 according to the second embodiment differ from the first embodiment in the configuration of the projection module 39. In addition, in this second embodiment, the configuration of the projection module 39 is different from the first embodiment, and the HUD device 3 and the helmet 101 in which it is mounted, as well as the information presentation system configured by the HUD device 3. 1 has the same configuration as the first embodiment, so only the projection module 39 with a different configuration will be described, and the same configuration parts will be described in the description of the first embodiment based on FIGS. 1 to 15. A detailed explanation will be omitted.

FIG. 16 is a front view of a helmet 101 equipped with a HUD device 3 according to the second embodiment. FIG. 17 is a side view of a helmet 101 equipped with a HUD device 3 according to the second embodiment. Note that in FIGS. 16 and 17, similarly to FIG. 1, the two-dot chain arrow indicates the path and traveling direction of the display light, and the one-dot chain line indicates the optical axis LX of the display light. In addition, in FIGS. 16 and 17, the projection module 39 is built into the helmet main body 105, but for convenience, a portion thereof is shown by a solid line. Note that these matters also apply to FIGS. 18 to 21, which will be referred to later.

As shown in FIGS. 16 and 17, the projection module 39 of the HUD device 3 according to the second embodiment generates a pattern of display light corresponding to a display image based on the image signal input from the GDC 55. A light emitter 57 that emits light, a concave mirror 59 that reflects display light emitted from the light emitter 57 toward the combiner unit 41, a housing 60 that accommodates the light emitter 57 and the concave mirror 59, and a housing 60. a cover member 64 provided to cover the projection aperture 62 formed in the projection aperture 62; and an optical axis adjustment mechanism 61 configured to be able to adjust the direction of the optical axis LX of the display light directed from the projection aperture 62 toward the combiner 95. ing.

The housing 60 is provided at a location from the right rear side to the right front side of the jaw portion 111 of the helmet body 105 with the projection opening 62 facing upward. The housing 60 is constructed by combining a plurality of resin housing constituent members (not shown), and has an accommodation space therein for accommodating the light emitter 57 and the concave mirror 59. The projection opening 62 is an opening for passing the display light emitted from the light emitter 57 from the inside (accommodation space) of the housing 60 to the outside, and has a substantially rectangular shape on the upper surface of the front portion of the housing 60. It is formed.

The light emitter 57 is housed in a position from the middle of the housing 60 to a position on the rear side opposite to the projection opening 62 . This light emitter 57 has the same configuration as the light emitter 57 of the first embodiment (a combination of a light source, a display element, an optical lens, a diffuser plate, a polarizing beam splitter, etc.). The light emitter 57 generates display light with a light intensity such that the display image displayed by the HUD device 3 has a brightness level set on the information terminal 5, and directs the generated display light toward the concave mirror 59. and emit light.

The concave mirror 59 is housed at a position on the front side of the housing 60 and below the projection opening 62 . The concave mirror 59 has a free-form reflecting surface 63 having no rotational symmetry, and is provided with the reflecting surface 63 facing the projection aperture 62 side. The concave mirror 59 reflects the display light received from the light emitter 57 upward toward the projection aperture 62 using the reflective surface 63, and also adjusts the display image visually recognized by the user to a size suitable for display while driving. and position.

In the projection module 39 , the display light emitted from the light emitter 57 and reflected by the concave mirror 59 passes through the projection opening 62 and is projected onto the combiner 95 via the cover member 64 . The cover member 64 is a substantially rectangular plate-shaped member made of polycarbonate (PC) or the like, has a light-transmitting property, and transmits display light.

The optical axis adjustment mechanism 61 is provided integrally with the projection module 39 (housing 60). The optical axis adjustment mechanism 61 includes a holder 65 that rotatably holds the projection module 39 over a predetermined angular range around a first rotation axis Xa and a second rotation axis Xb that are perpendicular to each other; A first coil spring 88a and a second coil spring 88b serve as posture maintaining tools for maintaining the posture of the projection module 39 held by the holder 65, and provide a biasing force for rotating the projection module 39 to the holder 65. A first bolt 69a and a second bolt 69b are provided as biasing parts.

The holder 65 includes a holder member 66 that is attached to the lower side of the housing 60 and supports the projection module 39, and supports the holder member 66 rotatably around the first rotation axis Xa and the second rotation axis Xb. A pivot shaft member 68 is provided. The pivot shaft member 68 is located in front of the projection module 39 and close to the concave mirror 59 . As a result, the first rotation axis Xa and the second rotation axis Xb are located at the point where the concave mirror 59 intersects the virtual line LX', which is an extension of the optical axis LX of the display light emitted from the light emitter 57. It is set nearby. The lower shaft portion of the pivot shaft member 68 is attached to a bracket piece 70 fixed to the shell of the helmet body 105 or the like.

The holder member 66 is provided with a support piece 74 having a bearing portion 72 that receives a sphere provided at the upper end of the pivot shaft member 68 . In addition to the bearing part 72, this support piece 74 is provided with a first mounting plate part 76a to which a first bolt 69a is attached, and a second mounting plate part 76b to which a second bolt 69b is attached. There is. The first mounting plate portion 76a is provided at a position spaced apart from the left rear side of the bearing portion 72, with the plate thickness direction corresponding to the vertical direction. The second mounting plate portion 76b is provided at a position on the right rear side of the projection module 39, with the plate thickness direction corresponding to the vertical direction.

A first bolt 69a is attached to the first mounting plate portion 76a by being inserted through an insertion hole from below to above. The first mounting plate portion 76a faces a first bracket piece 78a fixed to the shell of the helmet body 105 with a predetermined distance therebetween. The upper shaft portion of the first bolt 69a is also inserted into an insertion hole formed in the first bracket piece 78a. A first coil spring 88a is interposed between the first bracket piece 78a and the first mounting plate portion 76a, with the shaft portion of the first bolt 69a being inserted therethrough. As a result, the first mounting plate portion 76a is constantly biased by the first coil spring 88a in a direction to move it downward away from the first bracket piece 78a.

The head of the first bolt 69a is in contact with the back surface of the first mounting plate portion 76a, and is accessible from the outside through a working hole 115 provided in the helmet body 105. As a result, by using a tool such as a screwdriver, the first bolt 69a can be screwed in to the back or pulled out to the front by operating the working hole 115 from the bottom of the helmet 101. ing. By screwing the first bolt 69a toward the back, the first mounting plate portion 76a is displaced in a direction toward the first bracket piece 78a against the biasing force of the first coil spring 88a. On the other hand, by pulling out the first bolt 69a toward the front, the first mounting plate portion 76a is displaced in the direction away from the first bracket piece 78a by the biasing force of the first coil spring 88a.

A second bolt 69b is attached to the second mounting plate portion 76b by being inserted through the insertion hole from below to above. The second mounting plate portion 76b faces a second bracket piece 78b fixed to the shell of the helmet body 105 with a predetermined distance therebetween. The upper shaft portion of the second bolt 69b is also inserted into an insertion hole formed in the second bracket piece 78b. A second coil spring 88b is interposed between the second bracket piece 78b and the second mounting plate portion 76b, with the shaft portion of the second bolt 69b being inserted therethrough. As a result, the first mounting plate portion 76a is constantly biased by the second coil spring 88a in a direction to move it downward away from the second bracket piece 78b.

The head of the second bolt 69b is in contact with the back surface of the second mounting plate portion 76b, and is accessible from the outside through a working hole 115 provided in the helmet body 105. As a result, by using a tool such as a screwdriver, the second bolt 69b can be screwed into the back or pulled out to the front by operating the working hole 115 from the bottom of the helmet 101. ing. By screwing the second bolt 69b inwards, the second mounting plate portion 76b is displaced in a direction toward the second bracket piece 78b against the biasing force of the second coil spring 88b. On the other hand, by pulling out the second bolt 69b toward the front, the second mounting plate portion 76b is displaced in the direction away from the second bracket piece 78b by the biasing force of the second coil spring 88b.

FIG. 18 shows a case where the direction of the optical axis LX of the display light projected by the projection module 39 of the helmet 101 equipped with the HUD device 3 according to the second embodiment is adjusted to the left by the optical axis adjustment mechanism 61. FIG. FIG. 19 shows a case where the direction of the optical axis LX of the display light projected by the projection module 39 of the helmet 101 equipped with the HUD device 3 according to the second embodiment is adjusted to the right by the optical axis adjustment mechanism 61. FIG.

In the optical axis adjustment mechanism 61, as shown in FIG. 18, when the first bolt 69a is screwed in, the first mounting plate portion 76a is displaced in the direction approaching the first bracket piece 78a. As a result, both the holder member 66 and the projection module 39 rotate around the first rotation axis Xa about the sphere of the pivot shaft member 68 in a direction that directs the projection opening 62 to the right. As a result, the direction of the optical axis LX of the display light traveling from the projection module 39 to the combiner 95 is displaced to the right.

Further, in the optical axis adjustment mechanism 61, as shown in FIG. 19, when the first bolt is pulled out, the first mounting plate portion 76a is displaced in the direction away from the first bracket piece 78a. , the holder member 66 and the projection module 39 both rotate about the sphere of the pivot shaft member 68 around the first rotation axis Xa in a direction that directs the projection opening 62 to the left. As a result, the direction of the optical axis LX of the display light traveling from the projection module 39 to the combiner 95 is displaced to the left.

FIG. 20 shows a case where the direction of the optical axis LX of the display light projected by the projection module 39 of the helmet 101 equipped with the HUD device 3 according to the second embodiment is adjusted upward by the optical axis adjustment mechanism 61. FIG. FIG. 21 shows the direction of the optical axis LX of the display light projected by the projection module 39 of the helmet 101 equipped with the HUD device 3 according to the second embodiment adjusted downward by the optical axis adjustment mechanism 61. FIG.

In the optical axis adjustment mechanism 61, as shown in FIG. 20, when the second bolt 69b is screwed in, the second mounting plate portion 76b is displaced in the direction approaching the second bracket piece 78b. As a result, both the holder member 66 and the projection module 39 rotate around the second rotation axis Xb around the sphere of the pivot shaft member 68 in a direction that directs the projection opening 62 to the front side. As a result, the direction of the optical axis LX of the display light traveling from the projection module 39 to the combiner 95 is displaced toward the front.

Further, in the optical axis adjustment mechanism 61, as shown in FIG. 21, when the second bolt is pulled out, the second mounting plate portion 76b is displaced in the direction away from the second bracket piece 78b. , the holder member 66 and the projection module 39 both rotate around the second rotation axis Xb about the sphere of the pivot shaft member 68 in a direction that directs the projection opening 62 to the rear side. As a result, the direction of the optical axis LX of the display light traveling from the projection module 39 to the combiner 95 is displaced to the rear side.

In this way, in the optical axis adjustment mechanism 61, by screwing in and pulling out the first bolt 69a, the direction of the optical axis LX of the display light directed from the projection module 39 toward the combiner 95 is changed in the left-right direction (first direction). The direction of the optical axis LX of the display light directed from the projection module 39 toward the combiner 95 can be adjusted in the front-rear direction (second direction) by screwing in and pulling out the second bolt 69b. can do. Thereby, the projection position of the display light onto the combiner 95 included in the combiner unit 41 can be adjusted vertically and horizontally.

The HUD device 3 according to the second embodiment and the helmet 101 equipped with the same also include the optical axis adjustment mechanism 61 configured to be able to adjust the direction of the optical axis LX of the display light directed from the projection module 39 toward the combiner 95. With this arrangement, the projection position of the display light onto the combiner 95 can be adjusted in accordance with the line of sight position of the user wearing the helmet 101. Thereby, the user can clearly see the displayed image via the combiner 95 at a desired position, regardless of individual differences in the line of sight position when wearing a helmet.

As mentioned above, preferred embodiments have been described as illustrations of the technology of the present disclosure. However, the technology of the present disclosure is not limited to this, and can also be applied to embodiments in which changes, replacements, additions, omissions, etc. are made as appropriate. Additionally, some of the components described in the accompanying drawings and detailed description may not be essential for solving the problem. Therefore, just because these non-essential components are described in the accompanying drawings or detailed description, it should not be immediately determined that those non-essential components are essential.

For example, the above embodiment may have the following configuration.

In the above embodiment, the HUD device 3 has been described using as an example a configuration in which display light is projected from the projection module 39 onto the combiner 95 provided as a projecting object separately from the shield 107 of the helmet 101. The disclosure technique is not limited to this. The HUD device 3 uses the shield 107 of the helmet 101 as a projection target instead of the combiner 95, and projects the display light from the projection module 39 onto the shield 107, thereby superimposing the display light on the scenery in the front view through the shield 107. In this state, the display image using the display light may be displayed as a virtual image.

In the embodiment described above, a smartphone is exemplified as the information terminal 5 that cooperates with the HUD device 3, but the technology of the present disclosure is not limited to this. The information terminal 5 may be a smart watch, a tablet terminal, a PDA (Personal Data Assistant), or other terminal with functions similar to a smartphone, and is equipped with a function to connect to an external network N, a GPS receiver 7, and a HUD. Any other portable information terminal may be used as long as it can communicate with the device 3. Further, instead of or in addition to the information terminal 5, the HUD device 3 communicates with the motorcycle to receive detection information from various sensors mounted on the motorcycle and display the information as a display image. You can.

In the above embodiment, a reflective display panel such as LCOS (Liquid Crystal On Silicon) is used as an example of a display element used in the light emitter 57, but the technology of the present disclosure is not limited to this. As the display element of the light emitter 57, for example, a self-luminous display element such as an organic EL (Electro Luminescence) display panel or a VFD (Vacuum Fluorescent Display) may be used.

Although in the embodiment described above, the projection module 39 includes the concave mirror 59, the technology of the present disclosure is not limited to this. The projection module 39 may include a convex mirror or a plane mirror instead of the concave mirror 59.

In the above embodiment, the information presented to the user as a display image by the HUD device 3 is information about the current time, speed, and route guidance, but the technology of the present disclosure is not limited to this. These current time, speed, and route guidance information are only examples of information that can be presented by the HUD device 3, and may be other information that contributes to driving the motorcycle. Other information useful to the user, such as information on surrounding facilities in the driving area, may be set as an item to be displayed on the HUD device 3.

Although the above embodiment has been described using a full-face helmet as an example of the helmet 101 on which the HUD device 3 is mounted, the technology of the present disclosure is not limited to this. The full-face type helmet 101 is only one example of the helmet 101 in which the HUD device 3 is mounted, and as long as it has a part that can house the projection module 39, it may be an open-face type (jet type) or a semi-jet type. It is possible to employ any type of helmet, such as a three-quarters type helmet, as the helmet 101 on which the HUD device 3 is mounted.

In the embodiment described above, the helmet 101 worn when driving a motorcycle has been described as an example of the helmet 101 on which the HUD device 3 is mounted, but the technology of the present disclosure is not limited to this. Of course, the HUD device 3 can also be applied to helmets worn on other vehicles such as two-wheeled vehicles such as personal watercraft and bicycles, and snowmobiles.

As described above, the technology of the present disclosure is useful for a HUD device mounted on a helmet and a helmet equipped with a HUD device.

E... User's eyes La... First rotation axis Lb... Second rotation axis LX... Optical axis N... External network S... GPS satellite 1... Information presentation system 3... HUD device 5... Information terminal 7... GPS receiver 9 ...Wireless communication module 11...Display device with touch panel 13...Microcomputer 15...Power source 17...Network communication section 19...Near field communication section 21...Screen 23...Memory 25...CPU
27...Time app 29...Speed app 31...Navi app 33...Cooperation app 35...Wireless communication module 37...Control module 39...Projection module 41...Combiner unit 43...Operation unit 45...Power supply 47...PCB module 49...Memory 51...CPU
53...Microcomputer 55...GDC
57... Light emitter 59... Concave mirror 60... Housing 61... Optical axis adjustment mechanism 62... Projection aperture 63... Reflective surface 64... Cover member 65... Holder 66... Holder member 67... Leaf spring member 68... Pivot shaft member 69a... First bolt 69b...Second bolt 70...Bracket piece 71...Inner frame 72...Bearing part 73...Outer frame 74...Support piece 75...Shaft part 76a...First mounting plate part 76b...Second attachment Plate part 77... Fitting recessed part 78a... First bracket piece 78b... Second bracket piece 79... Mounting hole 81... Mounting hole 83... Fastener 84... Base plate part 87a... First leaf spring 87b... Second plate part Leaf spring 87c... Third leaf spring 87d... Fourth leaf spring 88a... First coil spring 88b... Second coil spring 89... Mounting plate 91... Insertion hole 93... Weld nut 95... Combiner 96... Semi-transparent reflective surface 97 ... Support mechanism 98 ... Stay 99 ... Rotating shaft body 101 ... Helmet 103 ... Window opening 105 ... Helmet main body 107 ... Shield 109 ... Fastener 111 ... Jaw section 113 ... Forehead section 115 ... Working hole

Claims (5)

A head-up display device mounted on a helmet,
Display light for forming a display image that can be visually recognized by the user as a virtual image through the projection object, which is placed in front of the user wearing the helmet and has both light transmittance and light reflection properties. a projection module that projects
an optical axis adjustment mechanism configured to be able to adjust the direction of the optical axis of display light directed from the projection module toward the projection target ,
The projection object is disposed in front of the eye via a support mechanism having an upper end supported by the forehead of the helmet and a stay extending downward,
The projection module includes a light emitter that emits the display light, and a mirror that reflects the display light emitted by the light emitter toward the projection target,
The light emitter and the mirror are separated from each other and provided separately on both left and right sides of the chin of the helmet,
The optical axis adjustment mechanism can adjust the direction of the optical axis of the display light directed from the mirror toward the object to be projected by rotating the mirror around a predetermined rotation axis with the light emitter fixed. A head-up display device comprising : The head-up display device according to claim 1,
The head-up display device is characterized in that the optical axis adjustment mechanism is configured to be able to adjust the direction of the optical axis of the display light directed toward the projection target by operating from the lower side of the helmet. The head-up display device according to claim 1 or 2,
The optical axis adjustment mechanism is configured to be able to adjust the direction of the optical axis of the display light directed toward the projection target in a first direction intersecting the optical axis and a second direction intersecting the first direction. A head-up display device characterized by: In the head-up display device according to any one of claims 1 to 3,
The head is characterized in that the predetermined rotation axis is set at or near a location where a virtual line extending the optical axis of the display light emitted from the light emitter intersects the mirror. up display device. A helmet equipped with a head-up display device,
The head-up display device displays a display image that can be visually recognized by the user as a virtual image through the projection object, which is placed in front of the user wearing the helmet and has both light transmittance and light reflectivity. a projection module that projects display light to form a
an optical axis adjustment mechanism configured to be able to adjust the direction of the optical axis of display light directed from the projection module toward the projection target ,
The projection object is disposed in front of the eye via a support mechanism having an upper end supported by the forehead of the helmet and a stay extending downward,
The projection module includes a light emitter that emits the display light, and a mirror that reflects the display light emitted by the light emitter toward the projection target,
The light emitter and the mirror are separated from each other and provided separately on both left and right sides of the chin of the helmet,
The optical axis adjustment mechanism can adjust the direction of the optical axis of the display light directed from the mirror toward the object to be projected by rotating the mirror around a predetermined rotation axis with the light emitter fixed. A helmet comprising :

Images