KR102810703B1 - Shield for Helmet, Helmet, and Head-Up Display Device - Google Patents

Abstract

A shield for a helmet is provided, wherein the shield acts as a projection screen for a head-up display device. The shield includes an objective lens and an eyepiece. The eyepiece is positioned above the objective lens. The objective lens reflects an image displayed on the head-up display device from a lower front portion of the helmet, and the image is reflected by the objective lens and projected onto the eyepiece, and then the image is reflected by the eyepiece to the rear of the eyepiece. The above-described configuration reduces electronic components attached to the helmet, and further provides embodiments of a head-up display device and a head-up display system for a helmet.

Description

{Shield for Helmet, Helmet, and Head-Up Display Device}

The present invention relates to a head-up display device for a rider. The head-up display device reduces the number of electronic components attached to a helmet.

TWM563171 discloses a helmet having a head-up display including a helmet, an optical engine module, and a reflector. The helmet includes a body and a lens, wherein the lens is joined to the body by a fastening member. The optical engine module is configured to be on a cap of the body and adjacent the fastening member and projects an image. The reflector is configured below the optical engine module and is positioned in an optical path through which the optical engine module projects the image such that the reflector receives the image and then reflects the image to the rider's eye. The image is of a traffic situation ahead of the rider, which is convenient for the rider to observe the traffic situation in real time.

Also, many references disclose a display module of a head-up display configured in a motorcycle helmet to display an image on the shield of the helmet for observation by the rider. However, arranging a foldable optical path inside the helmet, for example, installing an optical module (e.g., a display module) or installing multiple camera modules, makes the helmet itself heavier and shifts the center of gravity, which affects the protective effect of the helmet.

The present invention relates to a head-up display device for a rider, wherein the head-up display device reduces electronic components attached to a helmet.

The present invention relates to a shield for a helmet that serves as a projection screen for a head-up display device on a vehicle.

The shield includes an objective lens and an eyepiece. The eyepiece is positioned above the objective lens. The objective lens reflects the image displayed on the head-up display device of the vehicle. The image is reflected by the objective lens and projected onto the eyepiece, and then the image is reflected back to the eyepiece by the eyepiece. The above-described configuration reduces the number of electronic components attached to the helmet.

In some embodiments, the image is reflected by the front surface of the objective lens and then projected onto the rear surface of the eyepiece.

In some embodiments, the objective lens is a convex spherical surface or a hyperbolic spherical surface.

In some embodiments, the objective lens is provided with a reflective film. The reflectivity of the reflective film is between 50% and 80%.

In some embodiments, the eyepiece is a concave sphere or a transparent hyperboloid sphere. The angle between the eyepiece and the vertical is greater than the angle between the objective and the vertical.

In some embodiments, the objective lens and eyepiece are two separate shield bodies.

In some embodiments, the shield has an opening positioned between the objective lens and the eyepiece, or the shield has a connecting shield body positioned between the objective lens and the eyepiece.

In some embodiments, the shield further includes a first set of axes for adjusting the position of the objective lens.

In some embodiments, the shield further includes a second set of axles for adjusting the position of the eyepiece.

The present invention further provides a helmet including the shield described above. The helmet has a helmet body having an opening provided at a front thereof. The shield is positioned in the opening.

In some embodiments, the helmet further includes an angular position sensor.

In some embodiments, the helmet further comprises a first wireless module.

The present invention further provides a head-up display device configured in a means of transportation. The head-up display device includes a second wireless module and a display module. The second wireless module receives an angle value related to a shield. The display module selects a high-brightness mode or a low-brightness mode based on the angle value and projects an image on the shield. If the angle value is maintained within a certain angle range during riding, the display module projects an image in the high-brightness mode. If the angle value is out of the certain angle range during riding, the display module projects an image in the low-brightness mode.

In some embodiments, the shield includes an objective lens and an eyepiece. The objective lens reflects an image, which is reflected by the objective lens and projected onto the eyepiece.

In some embodiments, the image is reflected from the front surface of the objective lens and then projected onto the rear surface of the eyepiece.

In some embodiments, the display module projects an image onto a shield of the helmet.

In some embodiments, the helmet has an angular position sensor for determining angular values.

In some embodiments, the head-up display device further includes an acceleration sensor for detecting changes in angular values due to inertia.

In some embodiments, the second wireless module and the helmet are provided with pairing information. The display module projects an image onto the shield based on the pairing information.

In some embodiments, the display module provides more than one brightness mode.

The present invention relates to a head-up display device for a rider, which reduces the number of electronic components attached to a helmet.

FIG. 1 is a schematic diagram of a helmet according to some embodiments of the present invention.
Figure 2 is a schematic diagram of the optical path between the helmet and the head-up display module.
FIG. 3 is a schematic diagram of a helmet according to some embodiments of the present invention.
FIG. 4 is a schematic diagram of a helmet according to some embodiments of the present invention.
Figure 5 is a block diagram of the display system.
Figures 6 and 7 are schematic diagrams of the display system in use.
FIG. 8 is a schematic diagram of a helmet according to some embodiments of the present invention.

The directions described below are based on a rider riding a mobile vehicle, and the front direction of the mobile device is referred to as front to conform to the common sense of a person having ordinary knowledge in this technical field. The aforementioned means of transportation refers to a two-wheeled or three-wheeled vehicle that controls the front wheel using a handlebar, such as a motorcycle or scooter, but may also be other lightweight means of transportation, such as a bicycle or electric bicycle.

Referring to FIGS. 1 and 2, the present invention provides an embodiment of a helmet including a helmet body (1) and a shield (shield, 2).

The helmet body (1) has a base (11) with an opening (12) at its front.

The shield (2) includes an objective lens (21), an eyepiece lens (22), and two side sections (13). The objective lens (21) and the eyepiece lens (22) are shield bodies extending from the two side sections (13) of the shield (2) to the middle of the shield (2). The two side sections (13) of the shield (2) are connected to the base (11) so that the shield (2) can be positioned on the opening (12). The shield (2) further includes a lower section and an upper section. The objective lens (21) is positioned at the lower section of the shield (2). The eyepiece lens (22) is positioned at the upper section of the shield (2).

The objective lens (21) is configured to reflect an image (D) displayed on a head-up display device (3) located on the front bottom of the helmet, and the image (D) reflected by the objective lens (21) and projected onto the eyepiece (22) is then projected onto the rider's eyes. Specifically, the objective lens (21) is provided with a front surface and the eyepiece (22) is provided with a rear surface, and the image (D) is projected onto the front surface of the objective lens (21), and then the image (D) is reflected and projected onto the rear surface of the eyepiece (22), and then the image (D) is projected onto the rider's eyes.

As a result, there is no need to place a reflective path inside the helmet. There is almost no need to place electronic components (especially display modules) inside the helmet. The rider can observe the image displayed on the head-up display device without affecting the protective effect of the helmet itself. If the shield (2) is damaged, it can be used continuously by simply replacing only the shield (2).

In some embodiments, the head-up display device (3) may be configured at any location on the vehicle or on the steering wheel, which allows for a greater distance (object distance) between the rider and the head-up display device (3), thereby creating a greater image distance than prior art techniques in which a head-up display device is coupled to a helmet.

The present invention discloses an embodiment in which the objective lens (21) is a convex spherical surface or a hyperbolic spherical surface. The objective lens (21) has a surface coated with a film or has a reflective film attached thereto to increase the reflectivity of the image. The reflectivity of the surface of the objective lens (21) is set to 50% to 80% so that the objective lens (21) does not completely block the view below the rider.

The eyepiece (22) is a concave spherical surface or a transparent hyperbolic spherical surface. Since the angle between the eyepiece and the vertical line is greater than the angle between the objective lens and the vertical line, the rider can observe the actual scene and the image in front at the same time. The eyepiece (22) magnifies the image (D) several times so that the image (D) is displayed at a distance several times longer than the object distance, and the image (D) formed at 4 to 6 meters (image distance) and then magnified further can be observed with the rider's eyes.

The present invention discloses an embodiment in which the shield (2) is an open shield. The objective lens (21) and the eyepiece (22) are two separate shield bodies extending from the two side portions (13) of the shield (2) to the center of the shield (2). The shield (2) has an opening (23) positioned between the objective lens (21) and the eyepiece (22), allowing wind to enter through the opening (23) and preventing the rider from feeling hot.

In some embodiments, as shown in FIG. 8, the shield (2) is a closed shield, i.e., the shield (2) has a connecting shield body (28) positioned between the objective lens (21) and the eyepiece lens (22) to prevent wind and rain from entering the inside of the helmet and causing discomfort to the rider.

In some embodiments, the shield (2) has two side parts (13) provided with a first axel set (24). The first axel set (24) is connected to two side parts of the base (11) to adjust the angle of the objective lens (21) or to adjust the angles of the objective lens (21) and the eyepiece (22) simultaneously. As illustrated in FIG. 3, the objective lens (21) and the eyepiece (22) are separate shield bodies that can individually adjust the angles of the objective lens (21) and the eyepiece (22).

The helmet illustrated in Fig. 4 and the embodiment illustrated in Fig. 1 differ in the shield (2) further comprising a second axel set (25). The second axel set (25) is rotatably attached to the objective lens (21) and the eyepiece (22) so that the objective lens (21) can rotate on the eyepiece (22) to adjust the reflection angle of the image (D).

It is worth mentioning that the aforementioned shield (2) can also be worn by the user, for example, the shield (2) is manufactured in the form of an eye mask. The shield (2) is provided with a side (13) forming a support so that the shield (2) can be worn on the user's head.

Referring to FIGS. 2 and 5, the display system (100) includes a head-up display device (3) and a helmet. The head-up display device (3) is configured on the dashboard of the steering wheel to replace a display on the vehicle or on the steering wheel. The helmet is worn by the rider. Details of the structure of the helmet and shield are described above and will not be repeated here.

The helmet has a base (11) equipped with an angle position sensor (27), a first wireless module (26), and a battery (not shown). The battery supplies electricity to the electronic components mentioned above. The angle position sensor (27) is a gyroscope, an acceleration sensor, or an image sensor, and determines the angle of the helmet by image recognition and determines an angle value (271) of the helmet to correspond to the rider's motion of looking up or down. The first wireless module (26) wirelessly transmits the angle value (271) of the helmet.

The head-up display device (3) includes a control module, a display module (31), and a second wireless module (32). The display module (31) projects an image (D) provided with at least two modes, for example, a high-brightness mode and a low-brightness mode. The second wireless module (32) receives an angle value (271) of the helmet, and the control module of the head-up display device (3) determines the brightness of the image (D) displayed on the display module (31) based on the angle value (271) of the helmet.

When the helmet is tilted forward compared to the angle of the helmet during riding, the image (D) is in a low-brightness mode so that the rider can directly observe it through the transparent shield with his head down, as shown in Fig. 6. It is possible to set the image (D) on the dashboard and prevent strong sunlight that would affect the driver's ability to read the contents of the dashboard. Compared to the case where the image (D) is directly projected onto the windshield (of a vehicle) to form a head-up display image that can be read by the user, the present invention can project the image (D) in a low-brightness mode onto the shield (2) so that the user can read it.

When the helmet is maintained within a certain angle (almost vertical) range during riding, the display module (31) projects an image (D) in a high brightness mode as illustrated in FIG. 7, so that the rider can raise his/her head and observe the front, and set the image (D) to the screen of the head-up display device. In some embodiments, the riding angle described above can be set when the rider is about to board the vehicle (300) so as not to be affected by the angle difference due to personal habits of wearing the helmet. In some embodiments, the display module (31) is provided with two or more (e.g., three or more) brightness modes. The brightness displayed in the high brightness mode is brighter than the brightness displayed in the low brightness mode. The head-up display device (3) further includes an optical sensor module for detecting the brightness of the surroundings, for example, day or night, and adjusting the brightness of the image (D).

The first wireless module (26) and the second wireless module (32) are Bluetooth modules that provide pairing information. The base (11) and the head-up display device (3) each have a chip that is certified to ensure that the first wireless module (26) and the second wireless module are correctly paired. The head-up display device (3) projects an image (D) onto a specific shield of the helmet based on the pairing information so that the head-up display device (3) does not receive an incorrect angle value and display an incorrect brightness. In some embodiments, the head-up display device (3) can be connected to a smartphone to provide navigation information to the head-up display device (3) via push.

Optionally, the first wireless module (26) and the second wireless module (32) are individually an RFID reader and an RFID chip. The RFID chip is electrically connected to the angular position sensor (27) to store the angle value (271) of the helmet, and the control module of the head-up display device (3) records the identification inventory number (identifier) of the RFID chip and reads the angle value (271) of the helmet based on the identification inventory number (identifier) from the RFID chip, thereby eliminating the need to place an automatically connected wireless module and extending the durability of electronic components inside the helmet.

In some embodiments, the head-up display device (3) includes an acceleration sensor, for example, a gravity sensor (33) to compensate for incorrect judgment caused by inertial shaking during acceleration and deceleration of the moving means (300).

In some embodiments, the display module (31) is a high-efficiency and high-brightness display panel that performs high backlight and high-contrast images (D) with a screen brightness of about 40,000 nits at a controllable heating temperature.

Claims (20)

A shield for a helmet comprising an objective lens, an eyepiece and two side sections,
The above objective lens and the above eyepiece are shield bodies extending from the two side surfaces of the shield to the center of the shield;
The above eyepiece is positioned above the objective lens;
The above objective lens is configured to reflect an image displayed on a head-up display device of the vehicle;
The image is reflected by the objective lens and projected onto the eyepiece, and then the image is reflected to the rear of the eyepiece by the eyepiece;
A shield for a helmet, wherein the shield further includes a first axel set for adjusting the position of the objective lens. A helmet shield in the first aspect, wherein the image is reflected by the front surface of the objective lens and then projected onto the rear surface of the eyepiece. A helmet shield in the first paragraph, wherein the objective lens is a convex sphere or a hyperboloid sphere. A helmet shield according to claim 1, wherein the objective lens has a reflective film; and the reflectivity of the reflective film is between 50% and 80%. A helmet shield in the first aspect, wherein the eyepiece is a concave sphere or a transparent hyperboloid sphere; and the angle between the eyepiece and the vertical line is greater than the angle between the objective lens and the vertical line. A helmet shield, wherein in the first paragraph, the objective lens and the eyepiece are two separate shield bodies. A helmet shield in the first aspect, wherein the shield has an opening positioned between the objective lens and the eyepiece. A helmet shield in the first paragraph, wherein the shield is a connecting shield body located between the objective lens and the eyepiece. delete A helmet shield according to claim 1, wherein the shield further includes a second axel set for adjusting the position of the eyepiece. A helmet comprising a shield according to any one of claims 1 to 8 and 10, wherein the helmet has a helmet body having an opening provided at a front; and wherein the shield is positioned in the opening. A helmet further comprising an angular position sensor and/or a first wireless module in claim 11. As a head-up display device suitable for configuration in a means of transportation,
A second wireless module receiving angle values from the shield;
A display module that projects an image onto the shield by selecting a high-brightness mode or a low-brightness mode based on the above angle value;
A head-up display device, wherein when the angle value is maintained within a certain angle range during riding, the display module projects the image in the high-brightness mode; and when the angle value is not within the certain angle range during riding, the display module projects the image in the low-brightness mode. A head-up display device in accordance with claim 13, wherein the shield includes an objective lens and an eyepiece; the objective lens reflects the image, and the image is reflected by the objective lens and then projected onto the eyepiece. A head-up display device in claim 14, wherein the image is reflected by the front surface of the objective lens and projected onto the rear surface of the eyepiece. In the 13th paragraph, the display module is a head-up display device that projects the image onto the shield of the helmet. A head-up display device in accordance with claim 16, wherein the helmet has an angle position sensor for determining the angle value. A head-up display device further comprising an acceleration sensor that detects a change in the angle value due to inertia in claim 13. A head-up display device in claim 16, wherein the second wireless module and the helmet are provided with pairing information; and the display module projects the image onto the shield based on the pairing information. A head-up display device according to claim 13, wherein the display module has two or more types of brightness modes.