WO2020130027A1 - Head up display device and helmet - Google Patents

Abstract

A head up display (HUD) device (3) is mounted in a helmet (101), wherein the HUD device comprises: a projection module (39) that projects display light onto a combiner (95) which is disposed in front of the eyes of a user wearing the helmet, the display light being for forming a display image which is visible, as a virtual image, to the user through the combiner; and an optical axis adjustment mechanism (61) configured so as to enable adjustment of the direction of the optical axis (LX) of the display light travelling from the projection module towards the combiner.

Description

Head-up display device and helmet

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

Conventionally, by mounting a head-up display (HeadUp Display) device (hereinafter referred to as “HUD device”) on a helmet worn when driving a motorcycle, a user (driver) wearing the helmet concerned On the other hand, it is known that various kinds of information such as vehicle information such as vehicle speed, map information by a navigation system, and warning information are visually recognized as a virtual image in the front of the field of view to enhance convenience and safety during vehicle operation.

The HUD device mounted on the helmet includes a projection module that projects display light according to 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. Prepare The combiner is composed of a half mirror and is arranged at a position within the front view of the user within a window opening provided in the front portion of the helmet, and transmits light from the front of the user. Therefore, the user can visually recognize the virtual image (display image) by the display light in a state of being superimposed on the landscape through the combiner. An example of such a HUD device is disclosed in Patent Document 1.

JP, 2017-030530, A

By the way, there are individual differences in the user's line-of-sight position with respect to the window opening while wearing a helmet. In the HUD device described above, the position of the display light projected on the combiner does not match the line-of-sight position of the user, and the display light reflected by the combiner travels in a direction out of the user's forward field of view, resulting in a partial display image. Alternatively, it may not be visible at all or may not be displayed at the optimum position for driving assistance. Therefore, it is required for the user to satisfactorily visually recognize the display image through 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 such points, and an object thereof is to display a display image via a projection target to a user regardless of individual differences in the line-of-sight position when wearing a helmet. Is to be visually recognized at a desired position.

In order to achieve the above object, the technology of the present disclosure enables adjustment of the direction of the optical axis of the display light traveling from the projection module to the projection target.

Specifically, the technology of the present disclosure targets a HUD device mounted on a helmet.

The HUD device according to the technology of the present disclosure allows a user to see a virtual image through a projection target object that is provided in front of the user wearing a helmet and has both light transmissivity and light reflectivity. 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 that travels from the projection module to the projection target are provided.

According to this configuration, since the optical axis adjusting mechanism configured to adjust the direction of the optical axis of the display light traveling from the projection module to the projection target is provided, the projection target is adjusted according to the line-of-sight position of the user wearing the helmet. The projection position of the display light on the projection body can be adjusted. This allows the user to favorably view the display image through the projection target 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 adjusting mechanism is configured to be able to adjust the direction of the optical axis of the display light toward the projection target by operating from below the helmet.

According to this configuration, the direction of the optical axis of the display light toward the projection target can be adjusted by operating the optical axis adjustment mechanism from below the helmet, so that the user can wear the helmet while wearing the helmet. The direction of the optical axis can be easily adjusted.

Further, the optical axis adjusting mechanism is configured to be able to adjust the direction of the optical axis of the display light toward the projection target in a first direction intersecting the optical axis and a second direction intersecting the first direction. Preferably.

According to this configuration, the direction of the optical axis of the display light toward the projection target can be adjusted in two directions intersecting each other, so that the degree of freedom in the direction of adjusting the optical axis can be increased. As a result, the projection position of the display light on the projection target can be adjusted more accurately according to 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 projection target. The optical axis adjusting mechanism may be configured to be able to adjust the direction of the optical axis of the display light traveling from the mirror to the projection target by rotating the mirror about a predetermined rotation axis. In this case, it is preferable that the predetermined rotation axis is set at a position where the direction of the virtual line extending the optical axis of the display light emitted from the light emitter intersects with the mirror or in the vicinity of the position.

According to this configuration, the mirror is rotated to adjust the direction of the optical axis of the display light traveling from the mirror to the projection target, and the rotation axis as the center of the rotation operation of the mirror is extended. Since it is set at the position where the imaginary line and the mirror intersect or in the vicinity of the position, the distortion generated in the display image due to the rotation of the mirror can be reduced.

　The light emitter and the mirror may be provided on the helmet separately from each other. The optical axis adjusting mechanism is configured to adjust the direction of the optical axis of the display light traveling from the mirror to the projection target by rotating the mirror around a predetermined rotation axis with the light emitter fixed. Is preferred.

According to this configuration, since the direction of the optical axis of the display light traveling from the mirror to the projection target can be adjusted by rotating the mirror without rotating the light emitter, the optical axis adjusting mechanism can be made compact. It can be realized, and it is advantageous for suppressing the increase in size and weight of the helmet due to mounting the HUD device.

Also, 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 traveling from the mirror toward the projection target by rotating the mirror around the predetermined rotation axis together with the light emitter.

Also, the technology of the present disclosure is intended for a helmet equipped with a HUD device.

In the helmet according to the technique of the present disclosure, the HUD device is provided as a virtual image over the projection target by the user, with respect to the projection target having light transmissivity and light reflectivity arranged in front of the user wearing the helmet. 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 from the projection module toward the projection target are provided.

According to this configuration, since the optical axis adjusting mechanism configured to adjust the direction of the optical axis of the display light traveling from the projection module to the projection target is provided, the projection target is adjusted according to the line-of-sight position of the user wearing the helmet. The projection position of the display light on the projection body can be adjusted. This allows the user to favorably view the display image through the projection target at a desired position regardless of individual differences in the line-of-sight position when wearing a helmet.

In the helmet according to the technique of the present disclosure, the light emitter and the display light emitted from the light emitter are received from one side in a predetermined direction along the opening surface of the window opening provided in the front part of the helmet, and the helmet A combiner that reflects in a direction visible to a user wearing a helmet and a combiner are supported so as to be positioned in front of the user wearing a helmet, and the position of the combiner can be adjusted by sliding movement in the predetermined direction. And a supporting mechanism configured. The "opening surface of the window opening" here is a virtual surface surrounded by the peripheral edge of the window opening, and may be a flat surface or a curved surface.

According to this configuration, since the combiner is supported by the support mechanism capable of adjusting the position of the combiner in the predetermined direction in which the display light is projected, the position of the combiner is adjusted according to the line-of-sight position of the user wearing the helmet. Can be adjusted. Also, because the position of the combiner is adjusted by sliding it in the specified direction, it does not require a relatively large space inside the closed shield as is the case when the combiner angle can be adjusted by rotating the combiner. A space-saving configuration can be achieved in which the position of the combiner can be adjusted. Therefore, with a space-saving structure, the user can satisfactorily view the display image through the combiner at a desired position regardless of individual differences in the line-of-sight position when wearing a helmet.

The predetermined direction in which the position of the combiner can be adjusted is preferably the vertical direction of the helmet. The “vertical direction of the helmet” here means a direction corresponding to the vertical direction of the face of the user wearing the helmet.

The variation in the user's line-of-sight position with respect to the helmet window opening is largely due to individual differences in the user's line-of-sight height. According to the above configuration, since the position of the combiner can be adjusted in the vertical direction of the helmet, the position of the combiner can be adjusted according to the line-of-sight of the user wearing the helmet, and the combiner can be provided to the user. The displayed image can be satisfactorily visually recognized at a desired position.

In the above HUD device, it is preferable that the support mechanism is configured to slide the combiner in a direction along the optical axis of the display light toward the combiner.

As the direction of slide movement when adjusting the position of the combiner deviates from the direction along the optical axis of the display light toward the combiner, the optical axis of the display light and the position of the combiner deviate as the combiner slides. Therefore, in order to irradiate the combiner with all the display light, it is necessary to widen the reflecting surface that receives and reflects the display light of the combiner. Therefore, not providing a separate means for adjusting the direction of the optical axis of the display light is disadvantageous in saving space in the helmet shield.

On the other hand, according to the above configuration, the support mechanism is configured so that the position of the combiner is adjusted in the direction along the optical axis of the display light, so that the reflecting surface of the combiner is moved from the optical axis of the display light accompanying the slide movement. There is no need to make it wider considering the gap. Accordingly, the combiner can be configured compactly without separately providing a means for adjusting the direction of the optical axis of the display light, which is advantageous in saving space in the helmet shield.

Further, in the HUD device, the support mechanism may include a stay attached to the combiner, and a holding component that slidably holds the stay in a posture along the predetermined direction in the longitudinal direction.

Also, the technology of the present disclosure is intended for a helmet equipped with a HUD device.

In the helmet according to the technique of the present disclosure, the HUD device emits the display light, and the display light emitted from the light emitter is provided in a predetermined direction along the opening surface of the window opening provided in the front portion of the helmet. The combiner that receives from one side in the direction and reflects toward the direction in which the user wearing the helmet is visible, and the combiner is supported so as to be positioned in front of the eyes of the user wearing the helmet, and the position of the combiner is set to the above predetermined value. And a support mechanism configured to be adjustable by sliding movement in the direction.

According to this configuration, since the combiner is supported by the support mechanism capable of adjusting the position of the combiner in the predetermined direction in which the display light is projected, the position of the combiner is adjusted according to the line-of-sight position of the user wearing the helmet. Can be adjusted. Also, because the position of the combiner is adjusted by sliding it in the specified direction, it does not require a relatively large space inside the closed shield as is the case when the combiner angle can be adjusted by rotating the combiner. A space-saving configuration can be achieved in which the position of the combiner can be adjusted. Therefore, with a space-saving structure, the user can satisfactorily view the display image through the combiner at a desired position regardless of individual differences in the line-of-sight position when wearing a helmet.

ADVANTAGE OF THE INVENTION According to the HUD device which concerns on the technique of this indication, and the helmet which mounts it, regardless of the individual difference of a line-of-sight position at the time of wearing a helmet to a user, the display image via a projection object is favorable in a desired position. Can be seen.

FIG. 1 is a schematic overall configuration diagram of an information presentation system according to the 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 adjusting mechanism in the HUD device according to the first embodiment. FIG. 6 is a side view of the optical axis adjusting mechanism in the HUD device according to the first embodiment as viewed from the front side. FIG. 7 is a side view of the optical axis adjusting mechanism in the HUD device according to the first embodiment as seen from the direction indicated by VII in FIG. FIG. 8 is a view corresponding to FIG. 6 showing a state when the direction of the optical axis of the display light reflected by the concave mirror is adjusted to the left side of the optical axis adjusting mechanism included in the HUD device according to the first embodiment. FIG. 9 is a front view of the helmet equipped with the HUD device according to the first embodiment when the optical axis adjusting mechanism is in the state shown in FIG. 8. FIG. 10 is a view corresponding to FIG. 6 showing a state when the direction of the optical axis of the display light reflected by the concave mirror is adjusted to the right side of the optical axis adjusting mechanism included in the HUD device according to the first embodiment. FIG. 11 is a front view of the helmet equipped with the HUD device according to the first embodiment with the optical axis adjusting mechanism in the state shown in FIG. 10. FIG. 12 is a view corresponding to FIG. 7 showing a state when the direction of the optical axis of the display light reflected by the concave mirror is adjusted to the upper side of the optical axis adjusting mechanism included in the HUD device according to the first embodiment. FIG. 13 is a side view of the helmet equipped with the HUD device according to the first embodiment when the optical axis adjusting mechanism is in the state shown in FIG. FIG. 14 is a view corresponding to FIG. 7 showing a state of the optical axis adjusting 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 helmet equipped with the HUD device according to the first embodiment when the optical axis adjusting mechanism is in the state shown in FIG. FIG. 16 is a front view of a helmet equipped with the HUD device according to the second embodiment. FIG. 17 is a side view of a helmet equipped with the 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 side by the optical axis adjusting mechanism of the helmet equipped with the HUD device according to the second embodiment. is there. 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 of the helmet equipped with the HUD device according to the second embodiment is adjusted to the right by the optical axis adjusting mechanism. is there. FIG. 20 is a side view showing a state in which the direction of the optical axis in the display light reflected by the concave mirror of the helmet equipped with the HUD device according to the second embodiment is adjusted upward by the optical axis adjusting mechanism. is there. FIG. 21 is a side view showing a state in which the direction of the optical axis of the display light reflected by the concave mirror of the helmet equipped with the HUD device according to the second embodiment is adjusted downward by the optical axis adjusting mechanism. Is.

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

<<First Embodiment>>
In the first embodiment, for a HUD device according to the technique of the present disclosure and a helmet equipped with the same, a combiner provided separately from the shield of the helmet is used, and a display light for forming a display image on the combiner is used. As an example, the projection module for projecting a light emitting device that emits display light and a concave mirror that reflects the display light emitted by the light emitting device toward the combiner are provided separately from each other. explain.

The HUD device according to the first embodiment constitutes an information presentation system that presents information that contributes to driving assistance 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 line 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. The same applies 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. The information terminal 5 receives a radio wave from a GPS satellite S to generate positioning information, a GPS (Global Positioning System) receiver 7, a wireless communication module 9 for wireless communication with the outside, and an input/output device. A display device 11 with a touch panel, a microcomputer 13 that comprehensively controls the operation of the information terminal 5, and a power supply 15 that supplies electric power required to operate the information terminal 5 are provided.

The GPS receiver 7 is configured with a GPS antenna and the like (not shown). The GPS antenna receives GPS signals transmitted from a plurality of GPS satellites S launched into the earth's 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 position information of the information terminal 5 that has been positioned in the memory 23 included in the microcomputer 13 and sequentially updates it.

The wireless communication module 9 includes a network communication unit 17 that communicates with an external network N that is a wide area communication network such as the Internet, and a short-range communication unit 19 that performs wireless communication 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 mobile communication standard communication function 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, traffic jam, etc., information on peripheral facilities based on the current position acquired by the GPS receiver 7, Net information such as disaster information is received and temporarily stored in the 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). The short-range communication unit 19 is responsive to a request from the microcomputer 13 for the position information of the information terminal 5 acquired by the GPS receiver 7, the net information acquired by the network communication unit 17, and various applications described later. A memory included in the microcomputer 13 includes various kinds of information including application information acquired by software (hereinafter referred to as “app”), display items regarding display images displayed by the HUD device 3, and display setting information such as brightness. It is read from H.23 and transmitted to the HUD device 3 by wireless communication.

The display device with a touch panel 11 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 a position (touched position) in the screen 21 touched by the user are integrated. Thus, 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, various applications can be executed and display settings in the HUD device 3 can be performed when the cooperative application 33 described later is executed.

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

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

The time application 27 is software that acquires the current time. In the time application 27, for example, based on the time stamp acquired by communication with the base station and the time information acquired by the GPS receiver 7, further, NITZ (Network Identity and Time Zone) and NTP (Network Time Protocol). The current time is acquired using such time synchronization technology.

The speed application 29 is software that detects the moving speed of the information terminal 5. The 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. In the navigation application 31, for example, the destination is based on the map information acquired by the network communication unit 17 or prestored in the memory 23 and the position information of the information terminal 5 acquired by the GPS receiver 7. Route guidance to.

The cooperative 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, net information, and display setting information on the HUD device 3 to the HUD device 3. , Software for realizing the display function in the HUD device 3.

The display of the HUD device 3 can be set with this cooperation application 33. Specifically, as the display setting, items to be displayed on the HUD device 3 are set from a plurality of items including the current time, moving speed, and route guidance information (navigation information), and a display image (displayed by the HUD device 3 ( Hereinafter, the brightness of "HUD display") can be set. The display setting information set by the cooperation application 33 is stored in the memory 23.

The CPU 25 is typically realized by an IC (Integrated Circuit), an LSI (Large Scale Integration), or the like. The 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, 33.

With the function of the CPU 25, the microcomputer 13 causes the GPS receiver 7 to acquire information on the current position, causes the network communication unit 17 to establish a connection with the external network N, collects net information, and executes the cooperative application 33. The short-range communication unit 19 establishes the connection with the HUD device 3 and acquires the application information, the net information, and the display setting information acquired by various processes according to the execution of the time application 27, the speed application 29, and the navigation application 31. Is transmitted to the HUD device 3.

The power supply 15 is composed of a secondary battery such as a lithium-ion battery. The power supply 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 by a power switch (not shown), the power is supplied from the power source 15 to the wireless communication module 9, the display device 11 with a touch panel, and the microcomputer 13, so that the information terminal 5 has a predetermined operation according to the user's operation. It is designed to work.

<Structure 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 display device that projects visual information in the visual field of the user wearing the helmet 101.

The helmet 101 in which the HUD device 3 according to the first embodiment is mounted is a full-face type helmet, and a helmet body having a window opening 103 formed in the front portion for providing the wearing user with a view. 105 and a transparent shield 107 that is replaceably attached to the helmet body 105 and that can open and close the window opening.

Although not shown, the helmet body 105 has a structure in which a liner (not shown) made of expanded polystyrene or the like is provided as a shock absorbing body inside a shell (cap body) that forms an outer shell of the helmet body 105. ing. The shield 107 is rotatably attached to the right and left sides of the window opening 103 in the helmet body 105 by using fasteners 109 or the like within a predetermined angle range so that the window opening 103 can be opened and closed by rotating in the vertical direction. It has become.

The shield 107 has a function of blocking foreign matter such as dust, wind, and ultraviolet rays that jump through the window opening 103 with the window opening 103 closed. The shield 107 can be removed by removing the fastener 109. As the shield 107, a colorless and transparent shield, a colored transparent shield such as a smoke shield, and various shields having different light transmittances such as a mirror shield can be adopted according to the brightness of the external environment such as weather and day and night. ..

As shown in FIGS. 1 to 4, the HUD device 3 has a wireless communication module 35 that performs wireless communication with the outside, a control module 37 that controls a display function of the HUD device 3, and generates display light. A projection module 39 for projecting, a combiner unit 41 for allowing the user to visually recognize a display image by the display light projected from the projection module 39 as a virtual image, and an operation unit 43 for inputting an operation by the user to the HUD device 3. And a power supply 45 for supplying electric power required 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. The wireless communication module 35 receives the net information, application information, and display setting information transmitted from the short-range communication unit 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. The wireless communication module 35 is provided on the PCB together with the control module 37, and is incorporated 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 by the light emitter 57 included in the projection module 39. The control module 37 has 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 a program for operating the HUD device 3. The memory 49 also stores net 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 realized by an IC or LSI. The CPU 51 performs calculations for processing various data and controls the operations of the wireless communication module 35, the projection module 39 and the GDC 55.

The GDC 55 generates display image data to be visually recognized by the user via the combiner 95 included in the combiner unit 41 based on the net 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 the information of the item set in the display setting of the cooperative application 33 of the information terminal 5. The microcomputer 53 causes the GDC 55 to generate display image data by the function of the CPU 51 and outputs the image signal to the light emitter 57 included in the projection module 39.

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

The light emitter 57 is built in on the left side of the jaw 111 of the helmet body 105 and near the PCB module 47. Although not shown, the light emitter 57 includes a display element including a light source such as an LED (Light Emitting Diode) and 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 diffusion plate. , A polarization beam splitter (PBS: Polarizing Beam Splitter). The light emitting device 57 generates the display light with the intensity of light such that the display image displayed by the HUD device 3 has the brightness level set in the information terminal 5, and directs the generated display light to the concave mirror 59. And emit.

The concave mirror 59 is built in on the right side of the jaw 111 of the helmet body 105. The concave mirror 59 has a reflecting surface 63 (illustrated as a flat surface in FIG. 3 and the like) having a free-form curved surface 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 the reflection surface 63, and the display image visually recognized by the user is driving. Shape so that the size and position are suitable for displaying.

The optical axis adjusting mechanism 61 is provided integrally with the concave mirror 59. As shown in FIGS. 5 to 7, the optical axis adjusting mechanism 61 can rotate the concave mirror 59 around a first rotation axis Xa and a second rotation axis Xb orthogonal to each other over a predetermined angle range. A holding member 65 for holding the holding member 65, a leaf spring member 67 as a posture maintaining member for holding the posture of the concave mirror 59 held by the holding member 65, and an attachment for rotating the concave mirror 59 via the leaf spring member 67. It is provided with a first bolt 69a and a second bolt 69b as a biasing component that applies a force.

The holder 65 holds an inner frame 71 that holds the concave mirror 59 rotatably around the first rotation axis Xa, and holds the inner frame 71 together with the concave mirror 59 rotatably around the second rotation axis Xb. And an outer frame 73. Here, the first rotation axis Xa extends in the front-rear direction, and a position where a virtual line LX′ virtually extending the optical axis LX of the display light emitted from the light emitter 57 and the concave mirror 59 intersect. It is set to pass. Further, the second rotation axis Xb extends obliquely from the lower left side to the upper right side, and an imaginary line LX′ obtained by virtually extending the optical axis LX in the display light emitted from the light emitting device 57 and the concave mirror 59 are provided. It is set to pass through the intersection of.

The inner frame body 71 is provided so as to surround the outer circumference of the concave mirror 59. On both sides of the concave mirror 59 in the front-rear direction, shaft portions 75 projecting outward are provided at the center in the vertical 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 rotatably held around the first rotation axis Xa passing through the centers of the shaft portions 75 by fitting the shaft portions 75 into the fitting concave portions 77 with respect to the inner frame body 71. There is.

The outer frame body 73 is provided so as to surround the outer circumference of the inner frame body 71. Mounting holes 79 are formed on both sides of the inner frame 71 in the vertical direction so as to penetrate through the outer side and the inner side of the frame at the center in the front-rear direction. On both sides of the outer frame 73 in the up-down direction, mounting holes 81 penetrating the outer side and the inner side of the frame are formed at locations corresponding to the mounting holes 79 of the inner frame 71. The outer frame body 73 is inserted into the inner frame body 71 from the frame outer side of each mounting hole 81 to the mounting hole 79 of the corresponding inner frame body by inserting the fastener 83. 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 a tilted posture similar to that of the holder 65. The leaf spring member 67 includes a base plate portion 85 and a plurality of leaf springs 87a, 87b, 87c, 87d formed by cutting and raising the base plate portion 85. The plurality of leaf springs 87a, 87b, 87c, 87d are a first leaf spring 87a provided at an upper left position of the base plate portion 85 and a second leaf spring 87b provided at a lower right position of the base plate portion 85. A third leaf spring 87c provided at the front side position of the base plate portion 85 and a fourth leaf spring 87d provided at the rear side position of the base plate portion 85.

The first leaf spring 87a is in contact with the place 90a on the upper right side corresponding to the first rotation axis Xa on the back surface of the concave mirror 59. The 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 the lower left side portion 90b corresponding to the first rotation axis Xa on the back surface of the concave mirror 59. The second leaf spring 87b is biased in a direction away from the concave mirror 59, but the displacement in the same direction is restricted by the first bolt 69a on the back side, so that the first leaf spring 87a. The back surface of the concave mirror 59 that is about to rotate about the first rotation axis Xa is received and supported by the biasing force of the.

The third leaf spring 87c is in contact with the front side portion 90c corresponding to the second rotation axis Xb on the back surface of the concave mirror 59. The third leaf spring 87c constantly urges the concave mirror 59 from its rear surface to the front side. The fourth leaf spring 87d is in contact with a rear side portion 90d corresponding to the second rotation axis Xb on the back surface of the concave mirror 59. The fourth leaf spring 87d is biased in the direction away from the concave mirror 59 to the back side, but the second bolt 69b on the back side restricts the displacement in the same direction, so that the third leaf spring 87d is moved. The back surface of the concave mirror 59 that is about to rotate about 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 attachment plate 89 is formed with an insertion hole 91 for inserting the first bolt 69a and the second bolt 69b, and two weld nuts 93 are provided to communicate with the inside of each insertion hole 91. ing. The first bolt 69a and the second bolt 69b are attached to the attachment plate 89 by being inserted into the corresponding insertion holes 91 and screwed into the weld nut 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 portion of the first bolt 69a is disposed on the back side of the mounting plate 89, and if a tool such as a driver is used, the work hole 115 provided in the helmet body 105 can be operated by the operation from below the helmet 101. You can screw it in through or pull it out toward you. By screwing the first bolt 69a inward, the urging force can be applied to the concave mirror 59 via the second plate spring 87b. On the other hand, by pulling out the first bolt 69a to the front side, the biasing force to the concave mirror 59 via the second plate 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 portion of the second bolt 69b is disposed on the back surface of the mounting plate 89, and if a tool such as a driver is used, the work hole 115 provided in the helmet body 105 can be operated from below the helmet 101. You can screw it in through or pull it out toward you. By screwing the second bolt 69b inward, an urging force can be applied to the concave mirror 59 via the fourth leaf spring 87d. On the other hand, by pulling out the second bolt 69b to the front side, the biasing force to the concave mirror 59 via the fourth leaf spring 87d can be weakened or eliminated.

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

In the optical axis adjusting mechanism 61, as shown in FIG. 8, when the first bolt 69a is screwed in, the concave mirror 59 is moved by the biasing force acting via the second leaf spring 87b to the first bolt 69a. The reflecting surface 63 is rotated in a direction in which the reflecting surface 63 faces 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 in the display light traveling from the concave mirror 59 to the combiner 95 included in the combiner unit 41 is displaced to the right.

Further, in the optical axis adjusting mechanism 61, as shown in FIG. 10, when the first bolt 69a is pulled out, the concave mirror 59 causes the reflecting surface 63 to move to the left side by the urging force from the first leaf spring 87a. Rotate in the direction you want. As a result, as shown in FIG. 11, the direction of the optical axis LX in 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 view corresponding to FIG. 7 showing a state when the direction of the optical axis LX in the display light reflected by the concave mirror 59 of the optical axis adjusting mechanism 61 is adjusted to the upper side. FIG. 13 is a side view of the helmet 101 when the optical axis adjusting mechanism 61 is in the state shown in FIG. FIG. 14 is a view corresponding to FIG. 7 showing a state when the direction of the optical axis LX in the display light reflected by the concave mirror 59 of the optical axis adjusting mechanism 61 is adjusted downward. FIG. 15 is a side view of the helmet 101 when the optical axis adjusting mechanism 61 is in the state shown in FIG.

In the optical axis adjusting 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 biasing force acting via the fourth leaf spring 87d. The reflecting surface 63 is rotated in the direction toward the rear side against the biasing force from the leaf spring 87c. As a result, as shown in FIG. 13, the direction of the optical axis LX in the display light traveling from the concave mirror 59 to the combiner 95 included in the combiner unit 41 is displaced rearward.

Further, in the optical axis adjusting mechanism 61, as shown in FIG. 14, when the second bolt 69b is pulled out, the concave mirror 59 directs the reflecting surface 63 to 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 in the display light traveling from the concave mirror 59 to the combiner 95 included in the combiner unit 41 is displaced forward.

As described above, in the optical axis adjusting mechanism 61, the direction of the optical axis LX in the display light traveling from the concave mirror 59 to the combiner 95 included in the combiner unit 41 is moved to the left and right by the screwing operation and the drawing operation of the first bolt 69a. Direction (first direction), and the optical axis LX of the display light traveling from the concave mirror 59 to the combiner 95 included in the combiner unit 41 by screwing and pulling out the second bolt 69b. Can be adjusted in the front-back direction (second direction). Thereby, the projection position of the display light on the combiner 95 included in the combiner unit 41 can be adjusted vertically and horizontally.

The combiner unit 41 positions the 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 positions the combiner 95 in front of the user who is the wearer of the helmet 101. And a support mechanism 97 for supporting. The combiner 95 is a member that receives from one side in a predetermined direction along the opening surface of the window opening 103 provided in the front part of the helmet 101 and reflects toward a direction visible to a user wearing the helmet 101. The support mechanism 97 supports the combiner 95 so as to be positioned in front of the eyes of the user wearing the helmet 101, and the position of the combiner 95 is configured to be adjustable by sliding in the predetermined direction.

The combiner 95 is a transparent or semi-transparent plate-shaped component, and has a semi-transmissive reflection surface 96 having a free-form curved surface shape (planar shape in the drawing) having no rotational symmetry. The combiner 95 is arranged so as to be located inside the shield 107 in the closed state. The combiner 95 is a projected object having both light transmissivity and light reflectivity, and is composed of a half mirror. The half mirror has a property of reflecting a part of incident light and transmitting a part thereof.

The support mechanism 97 supports the combiner 95 at a position within the user's front view within the window opening 103 provided in the front portion of the helmet body 105. The combiner 95 is arranged at the front position of the right eye E of the user, and the supporting mechanism 97 arranges the semi-transmissive reflection surface 96 on the face side of the user so that the rear end is located above and the front end is located below. Supported in a forward leaning position.

The support mechanism 97 includes a stay 98 that extends in the vertical direction and a holding component 98a that holds the stay 69 in a state in which the stay 69 is oriented along the vertical direction of the helmet 101 in the longitudinal direction. A combiner 95 is connected to the lower end of the stay 98 via a rotary shaft 99 extending in the left-right direction. The support mechanism 97 is capable of adjusting the orientation of the semi-transmissive reflecting surface 96 by rotating the combiner 95 around the rotation axis 99. In this way, the stay 98 that supports the combiner 95 so that the direction of the combiner 95 can be adjusted is held by being inserted into the holding component 98a.

The holding part 98a is built in the upper right part of the forehead 113 of the helmet body 105. The holding component 98a is provided with an insertion hole (not shown) into which the stay 98 is inserted. Means for holding the stay 98 to the holding component 98a, such as a ratchet mechanism having an uneven meshing structure, are provided at portions of the inner peripheral surface of the insertion hole and the outer peripheral surface of the stay 98 that face each other. ing. The holding component 98a is configured to slide the stay 98 in the vertical direction of the helmet 101 by releasing the holding state of the stay 98 or the like.

The direction in which the stay 98 held by the holding component 98a can slide is set to the direction along the optical axis LX of the display light toward the combiner 95. Thus, the support mechanism 97 can adjust the position of the combiner 95 by sliding the stay 98 in the direction along the optical axis LX of the display light toward the combiner 95. Therefore, in the HUD device 3 of this embodiment, the position of the combiner 95 can be adjusted according to the height of the line of sight of the user.

For example, when a user who has a relatively low line-of-sight to the window opening 103 wears the helmet 101 and uses the information presentation system 1, the stay 98 is slid downward along the optical axis LX of the display light. Thus, if the position of the combiner 95 is adjusted so as to be arranged below the variable range, the position of the combiner 95 can be adjusted to the line-of-sight height when the eye E of the user is facing forward.

Further, when the user who has a relatively high line-of-sight to the window opening 103 wears the helmet 101 and uses the information presentation system 1, the stay 98 is slid upward along the optical axis LX of the display light. Accordingly, if the position of the combiner 95 is adjusted to be arranged above the variable range, the position of the combiner 95 can be adjusted to the line-of-sight height when the eye E of the user is facing forward.

Note that the stay 98 can be pulled out downward from the insertion hole of the holding component 98a. As a result, when the combiner 95 is damaged such as being scratched, the combiner 95 can be easily replaced together with the stay 98.

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

The power supply 45 is built in the back of the helmet body 105. The power source 45 is composed of a secondary battery such as a lithium ion battery. The power supply 45 is electrically connected to the wireless communication module 35, the control module 37, and the light emitting device 57 via wiring. When the power supply switch is operated by the operation unit 43, the HUD device 3 supplies power from the power supply 45 to the wireless communication module 35, the control module 37, and the light emitter 57, and operates the operation switch. The display operation is performed according to the switching of the display on and off.

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

According to the HUD device 3 and the helmet 101 having the same according to the first embodiment, the optical axis LX in the display light traveling from the concave mirror 59 of the projection module 39 to the combiner 95 is adjustable. Since the adjusting mechanism 61 is provided, the projection position of the display light on the combiner 95 can be adjusted according to the line-of-sight position of the user wearing the helmet 101. Thereby, the display image through the combiner 95 can be favorably viewed by the user at a desired position regardless of the individual difference in the line-of-sight position when the helmet 101 is worn.

Moreover, according to the HUD device 3 according to the first embodiment and the helmet 101 equipped with the same, the adjustment of the direction of the optical axis LX in the display light traveling from the concave mirror 59 to the combiner 95 is performed by rotating the light emitter 57. Since the concave mirror 59 can be rotated without rotating the concave mirror 59, the optical axis adjusting mechanism 61 can be realized compactly, and the helmet 101 can be prevented from becoming large and heavy due to the mounting of the HUD device 3. It is advantageous to

Further, according to the HUD device 3, since the support mechanism 97 is configured such that the position of the combiner 95 is adjusted in the direction along the optical axis LX of the display light, the combiner 95 is adjusted from the optical axis LX of the display light accompanying the slide movement. There is no need to increase the width in consideration of the deviation. Thereby, the combiner 95 can be configured compactly without separately providing a unit for adjusting the direction of the optical axis LX of the display light.

For example, the light emitter 57 and the concave mirror 59 may be incorporated in the forehead 113 of the helmet body 105, and the combiner 95 may be supported by the jaw 111 of the helmet body 105 by the support mechanism 97.

The support mechanism 97 is preferably capable of adjusting the position of the combiner 95 in a direction along the optical axis LX of the display light toward the combiner 95, but in a direction deviating from the optical axis LX, that is, a direction intersecting the optical axis LX. The position of the combiner 95 may be adjustable.

In the above-described embodiment, the HUD device 3 in which the support mechanism 97 can adjust the position of the combiner 95 by sliding the helmet 101 in the vertical direction has been described as an example, but the technology of the present disclosure is not limited to this. .. For example, a mode in which the combiner 95 receives the display light emitted from the light emitter 57 from one side in the left-right direction of the helmet 101 and reflects the display light in a direction visible to a user wearing the helmet 101 is adopted in the HUD device 3. In this case, the support mechanism 97 may be configured so that the position of the combiner 95 can be adjusted by sliding the helmet 101 in the left-right direction.

In short, the combiner 95 receives the display light emitted from the light emitter 57 from one side in a predetermined direction along the opening surface of the window opening 103 of the helmet 101, and is visible to the user wearing the helmet 101. It suffices that the support mechanism 97 is capable of adjusting the position of the combiner 95 by sliding movement in a predetermined direction in which the display light is projected, by reflecting the light in a direction. With such a configuration, the position of the combiner 95 can be adjusted according to the line-of-sight position of the user wearing the helmet 101.

<<Second Embodiment>>
In the second embodiment, with respect to the HUD device according to the technique of the present disclosure and a helmet equipped with the same, a combiner provided separately from the shield of the helmet is used, and display light for forming a display image on the combiner is used. A mode in which the projection module for projecting is a unit in which a light emitter that emits display light and a concave mirror that reflects the display light emitted by the light emitter toward the combiner are provided in the same case. Will be described as an example.

The HUD device 3 according to the second embodiment and the helmet 101 equipped with the HUD device 3 differ from the first embodiment in the configuration of the projection module 39. In addition, in this 2nd Embodiment, the structure of the projection module 39 differs from the said 1st Embodiment, and the HUD apparatus 3 and the helmet 101 with which it was mounted, and also the information presentation system which the HUD apparatus 3 comprises. 1 has the same configuration as the first embodiment, only the projection module 39 having a different configuration will be described, and the same components will be described in the first embodiment based on FIGS. 1 to 15. The detailed description will be omitted.

FIG. 16 is a front view of a helmet 101 equipped with the HUD device 3 according to the second embodiment. FIG. 17 is a side view of the helmet 101 on which the HUD device 3 according to the second embodiment is mounted. Note that, in these FIGS. 16 and 17, as in FIG. 1, the two-dot chain line 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. 16 and 17, the projection module 39 is built in the helmet body 105, but is partially shown by a solid line for convenience. Note that the same applies to FIGS. 18 to 21 to 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 display light of a pattern corresponding to the 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 the 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. And a cover member 64 provided so as to cover the projection opening 62 formed in the optical axis adjustment mechanism, and an optical axis adjusting mechanism 61 configured to adjust the direction of the optical axis LX in the display light traveling from the projection opening 62 to the combiner 95. ing.

The housing 60 is provided in a position from the right rear side of the jaw 111 of the helmet body 105 to the right front side with the projection opening 62 facing upward. The housing 60 is configured by combining a plurality of resin-made housing constituent members (not shown), and a housing space for housing the light emitter 57 and the concave mirror 59 is provided inside. The projection opening 62 is an opening for allowing the display light emitted from the light emitter 57 to pass 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. Has been formed.

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

The concave mirror 59 is housed in a position corresponding to the front side of the housing 60 and below the projection opening 62. The concave mirror 59 has a free-curved reflecting surface 63 having no rotational symmetry, and is provided with the reflecting surface 63 facing the projection opening 62 side. The concave mirror 59 reflects the display light received from the light emitter 57 upward toward the projection opening 62 by the reflecting surface 63, and the display image visually recognized by the user has a size suitable for display during driving. And position it.

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 translucency, and transmits display light.

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

The holder 65 is attached to the lower side of the housing 60 to support the projection module 39, and the holder member 66 rotatably supports the holder member 66 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 arranged at a position close to the concave mirror 59 on the front side of the projection module 39. As a result, the first rotation axis Xa and the second rotation axis Xb are at positions where the virtual line LX′ obtained by extending the optical axis LX in the display light emitted from the light emitter 57 and the concave mirror 59 intersect. It is set near. The shaft portion below 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 portion 72, the support piece 74 is provided with a first mounting plate portion 76a to which the first bolt 69a is mounted and a second mounting plate portion 76b to which the second bolt 69b is mounted. There is. The first mounting plate portion 76a is provided at a position separated to 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 inserting the insertion hole upward from below. The first mounting plate portion 76a faces the first bracket piece 78a fixed to the shell or the like of the helmet body 105 with a predetermined gap. The shaft portion on the upper side 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 in a state where the shaft portion of the first bolt 69a is inserted. As a result, the first mounting plate portion 76a is always provided with the urging force in the direction away from the first bracket piece 78a by the first coil spring 88a.

The head portion 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 work hole 115 provided in the helmet body 105. Accordingly, if a tool such as a driver is used, the first bolt 69a can be screwed in or pulled out to the front side by an operation using the work hole 115 from the lower side of the helmet 101. ing. By screwing the first bolt 69a inward, the first mounting plate portion 76a can be displaced in a direction approaching 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 side, the first mounting plate portion 76a can be displaced in the direction away from the first bracket piece 78a by the biasing force of the first coil spring 88a.

The second bolt 69b is attached to the second mounting plate portion 76b by inserting the insertion hole from the lower side to the upper side. The second mounting plate portion 76b faces the second bracket piece 78b fixed to the shell or the like of the helmet body 105 with a predetermined gap. The shaft portion on the upper side of the second bolt 69b is also inserted through 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 in a state where the shaft portion of the second bolt 69b is inserted. As a result, the first mounting plate portion 76a is always provided with the urging force in the direction in which it is separated downward from the second bracket piece 78b by the second coil spring 88a.

The head portion 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 the work hole 115 provided in the helmet body 105. Accordingly, if a tool such as a driver is used, the second bolt 69b can be screwed in or pulled out by operating the work hole 115 from the lower side of the helmet 101. ing. By screwing the second bolt 69b inward, the second mounting plate portion 76b can be displaced in a direction approaching 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 side, the second mounting plate portion 76b is displaced in the direction away from the second bracket piece 78b by the urging force of the second coil spring 88b.

FIG. 18 shows a case where the direction of the optical axis LX in 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 adjusting mechanism 61. It is a front view which shows the state of. FIG. 19 shows a case where the direction of the optical axis LX in 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 adjusting mechanism 61. It is a front view which shows the state of.

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

Further, in the optical axis adjusting 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 around the sphere of the pivot shaft member 68 in the direction of turning the projection opening 62 to the left around the first rotation axis Xa. As a result, the direction of the optical axis LX in the display light traveling from the projection module 39 to the combiner 95 is displaced to the left.

FIG. 20 shows the case where the direction of the optical axis LX in 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 adjusting mechanism 61. It is a side view which shows the state of. In FIG. 21, the direction of the optical axis LX in 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 downward by the optical axis adjusting mechanism 61. It is a side view which shows the state at the time.

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

Further, in the optical axis adjusting 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 sphere of the pivot shaft member 68 in a direction in which the projection opening 62 is directed rearward around the second rotation axis Xb. As a result, the direction of the optical axis LX in the display light traveling from the projection module 39 to the combiner 95 is displaced rearward.

As described above, in the optical axis adjusting mechanism 61, the direction of the optical axis LX in the display light traveling from the projection module 39 to the combiner 95 is the left-right direction (first direction) by the screwing operation and the pulling-out operation of the first bolt 69a. And the direction of the optical axis LX in the display light traveling from the projection module 39 to the combiner 95 is adjusted in the front-back direction (second direction) by screwing in and pulling out the second bolt 69b. can do. With these, the projection position of the display light on the combiner 95 included in the combiner unit 41 can be adjusted vertically and horizontally.

The optical axis adjusting mechanism 61 configured to adjust the direction of the optical axis LX in the display light traveling from the projection module 39 to the combiner 95 is also provided by the HUD device 3 according to the second embodiment and the helmet 101 including the same. Since it is provided, the projection position of the display light on the combiner 95 can be adjusted according to the line-of-sight position of the user wearing the helmet 101. This allows the user to favorably view the display image through the combiner 95 at a desired position regardless of individual differences in the line-of-sight position when wearing a helmet.

As described above, the preferred embodiment has been described as an example of the technology of the present disclosure. However, the technique of the present disclosure is not limited to this, and is also applicable to the embodiment in which changes, replacements, additions, omissions, etc. are appropriately made. Further, the constituent elements described in the accompanying drawings and the detailed description may include constituent elements that are not essential for solving the problems. Therefore, those non-essential components should not be immediately recognized as being essential, because the non-essential components are described in the accompanying drawings or the detailed description.

For example, the following embodiment may have the following configurations.

In the above-described embodiment, the HUD device 3 has been described by exemplifying a configuration in which display light is projected from the projection module 39 to the combiner 95 provided as a projection target separately from the shield 107 of the helmet 101. The disclosed technology 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 display light from the projection module 39 onto the shield 107, thereby superimposing the display light through the shield 107 on the landscape of the front view. In the state, the display image by the display light may be displayed as a virtual image.

In the above embodiment, a smartphone is illustrated 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 terminal having a function similar to a smart phone such as a smart watch, a tablet terminal, or a PDA (Personal Data Assistant), and has a function of connecting to the external network N and a GPS receiver 7, Any other portable information terminal may be used as long as it can communicate with the device 3. Further, the HUD device 3 communicates with the motorcycle instead of the information terminal 5 or in addition to the information terminal 5, and receives detection information from various sensors mounted on the motorcycle to form a display image. May be.

In the above-described embodiment, a reflective display panel such as LCOS (Liquid Crystal On Silicon) is illustrated as the display element used for 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.

In the above embodiment, the projection module 39 has the concave mirror 59, but the technique of the present disclosure is not limited to this. The projection module 39 may have a convex mirror or a plane mirror instead of the concave mirror 59.

In the above embodiment, the information presented as a display image to the user by the HUD device 3 is the current time, speed, and route guidance information, but the technique of the present disclosure is not limited to this. The information on the current time, speed, and route guidance is only an example of information that can be presented by the HUD device 3, and may be information that contributes to driving of a motorcycle other than the HUD device 3, and the cooperation application 33 of the information terminal 5. Other information useful for the user, such as information about peripheral facilities in the traveling area, may be set as an item to be displayed on the HUD device 3.

In the above embodiment, the full-face type helmet was 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. The full-face type helmet 101 is only an example of the helmet 101 on which the HUD device 3 is mounted, and any open face type (jet type) or semi-jet type may be used as long as it has a portion capable of incorporating the projection module 39. It is possible to employ a helmet of any type such as a type (three quarters type) as the helmet 101 on which the HUD device 3 is mounted.

In the above embodiment, the helmet 101 equipped with the HUD device 3 has been described by taking the helmet 101 worn when driving a motorcycle as an example, but the technique of the present disclosure is not limited to this. The HUD device 3 can of course be applied to a motorcycle such as a water bike or a bicycle, or a helmet worn in other vehicles such as a snowmobile.

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

E... User's eye 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 supply 17... network communication unit 19... short-range communication unit 21... screen 23... memory 25... CPU
27... Time application 29... Velocity application 31... Navigation application 33... Linkage application 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 emitting device 59... Concave surface mirror 60... Housing 61... Optical axis adjusting mechanism 62... Projection opening 63... Reflecting surface 64... Cover member 65... Holder 66... Holder member 67... Leaf spring member 68... Pivot shaft member 69a... 1st bolt 69b... 2nd bolt 70... Bracket piece 71... Inner frame body 72... Bearing part 73... Outer frame body 74... Support piece 75... Shaft part 76a... 1st mounting plate part 76b... 2nd mounting Plate portion 77... Fitting recess 78a... First bracket piece 78b... Second bracket piece 79... Mounting hole 81... Mounting hole 83... Fastener 84... Base plate portion 87a... First leaf spring 87b... Second 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-transmissive reflective surface 97 ...Supporting mechanism 98...Stay 99...Rotating shaft 101...Helmet 103...Window opening 105...Helmet body 107...Shield 109...Fastening 111...Jaw 113...Forehead 115...Working hole

Claims (12)

A head-up display device mounted on a helmet,
Display light for forming a display image visible to the user as a virtual image through the projection target, with respect to the projection target having both light transmissivity and light reflectivity arranged in front of the user wearing the helmet. A projection module for projecting
A head-up display device, comprising: an optical axis adjusting mechanism configured to adjust an optical axis direction of display light from the projection module toward the projection target. The head-up display device according to claim 1,
The head-up display device, wherein the optical axis adjusting mechanism is configured to be able to adjust a direction of an optical axis of display light toward the projection target by an operation from a lower side of the helmet. The head-up display device according to claim 1,
The optical axis adjusting mechanism is configured to adjust the direction of the optical axis of the display light toward the projection target in a first direction intersecting with the optical axis and a second direction intersecting with the first direction. A head-up display device characterized by being provided. The head-up display device according to claim 1,
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 optical axis adjusting mechanism is configured to be able to adjust the direction of the optical axis of display light traveling from the mirror to the projection target by rotating the mirror around a predetermined rotation axis,
The predetermined rotation axis is set at a location where a virtual line extending the optical axis of the display light emitted from the light emitter intersects with the mirror or near the location. Display device. The head-up display device according to claim 4,
The light emitter and the mirror are provided on the helmet separately from each other,
The optical axis adjusting mechanism can adjust the direction of the optical axis of the display light traveling from the mirror to the projection target by rotating the mirror around the predetermined rotation axis with the light emitter fixed. A head-up display device comprising: The head-up display device according to claim 4,
The light emitter and the mirror are provided in the same case and unitized,
The optical axis adjusting mechanism is configured to adjust the direction of the optical axis of the display light traveling from the mirror toward the projection target by rotating the mirror together with the light emitter around the predetermined rotation axis. Head-up display device characterized by being. A helmet equipped with a head-up display device,
The head-up display device is a display image that can be visually recognized by the user as a virtual image through the projection target, with respect to the projection target having both light transmissivity and light reflectivity that is disposed in front of the user wearing the helmet. A projection module for projecting display light for forming
An optical axis adjusting mechanism configured to adjust a direction of an optical axis of display light traveling from the projection module toward the projection target. A head-up display device mounted on a helmet,
A light emitter for emitting display light,
The display light emitted from the light emitter is received from one side in a predetermined direction along the opening surface of the window opening provided in the front part of the helmet, and is directed in a direction visible to a user wearing the helmet. And a combiner that reflects
A support mechanism configured to support the combiner so as to be positioned in front of the eyes of a user wearing the helmet, and to adjust the position of the combiner by sliding movement in the predetermined direction. Head-up display device. The head-up display device according to claim 8,
The head-up display device, wherein the predetermined direction is a vertical direction of the helmet. The head-up display device according to claim 8,
The head-up display device, wherein the support mechanism is configured to adjust a position of the combiner in a direction along an optical axis of display light toward the combiner. The head-up display device according to claim 8,
The support mechanism includes a stay attached to the combiner, and a holding component that slidably holds the stay in a state in which the stay is oriented along the predetermined direction in the longitudinal direction. .. A helmet equipped with a head-up display device,
The head-up display device,
A light emitter for emitting display light,
The display light emitted from the light emitter is received from one side in a predetermined direction along the opening surface of the window opening provided in the front part of the helmet, and is directed in a direction visible to a user wearing the helmet. And a combiner that reflects
A support mechanism configured to support the combiner so as to be positioned in front of a user wearing the helmet, and to adjust the position of the combiner by sliding movement in the predetermined direction. Helmet.

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