Projection device, wearable device and projection method

Abstract

The invention provides a projection device, wearable equipment and a projection method. The projection device is characterized in that a first side of a first shell is configured to be allowed to be connected with a first belt part, and a second side far away from the first side is provided with a first connecting part; the first shell is also provided with an accommodating cavity and a projection window communicated with the accommodating cavity; a first side of the second shell is configured to allow connection with the second strap part, a second side opposite to the first side away from the second shell is provided with a second connecting part, and the second connecting part is configured to be releasably connected with the first connecting part and allow the first strap part and the second strap part to be bent on the wrist of the wearer; the projection module is located in the containing cavity, light of the projection module is configured to penetrate through the projection window, and an included angle is formed between the light emitting direction of the projection module and the direction of the connecting line from the first shell to the second shell, so that the whole projection device can be installed on the belt part in a releasable mode, and the portability and compatibility of the projection device can be improved. And the projection device and the existing band part band electronic product can be efficiently jointed.

Description

Technical Field

[0001] The present application relates to the field of smart wearables, and specifically to a projection device, a wearable device, and a projection method. Background Art

[0002] With the miniaturization of electronic components, more and more smart wearable devices are emerging. Wearables such as smart glasses, watches, and bracelets can monitor human biometrics such as heart rate and blood oxygen levels, and provide text, images, or video information in various scenarios such as sports, driving, and entertainment, bringing great convenience. Projecting digital information such as text and images is already a relatively mature technology. Projection equipment used in scenarios such as office and film and television entertainment is often large in size. Although it can project larger and clearer content, it is limited to fixed scenarios.

[0003] In existing technologies, most of these projection technologies are integrated near the eye, such as AR and MR smart glasses. However, for wearable devices that are not near the eye, such as the wrist, these areas are quite limited because they are not directly in front of the eyes like smart glasses. Therefore, how to design a portable projection device that is not near the eye becomes a challenge. Summary of the Invention

[0004] The embodiments of the present application provide a projection device, a wearable device, and a projection method to solve the problem that existing projection devices have too few application scenarios and poor portability.

[0005] In a first aspect, an embodiment of the present application provides a projection device, which is applied to a wearable device, comprising:

[0006] A first housing, wherein a first side of the first housing is configured to allow connection with a first belt portion, and a second side of the first housing away from the first side is provided with a first connection portion; wherein the first housing further comprises an accommodating cavity and a projection window communicating with the accommodating cavity;

[0007] a second housing, wherein a first side of the second housing is configured to allow connection with a second strap portion, and a second connecting portion is provided on a second side of the second housing opposite to the first side of the second housing, the second connecting portion being configured to releasably engage the first connecting portion and allow both the first strap portion and the second strap portion to bend at a wearer's wrist;

[0008] The projection module is located in the accommodating cavity. The light of the projection module is configured to be transmitted through the projection window. The light emitting direction of the projection module is set at an angle to the direction of the line connecting the first shell and the second shell.

[0009] In a second aspect, an embodiment of the present application further provides a wearable device, comprising: a display body; a first strap portion connected to one end of the display body; a second strap portion connected to the other end of the display body away from the first strap portion, and a projection device as described in the above embodiment.

[0010] In a third aspect, an embodiment of the present application further provides a projection method, which is applied to the projection device described in the above embodiment, and the method includes:

[0011] Acquiring first posture information of the wrist where the projection device is located;

[0012] Acquire second posture information obtained based on a change in the first posture information;

[0013] The projection device is controlled to perform projection according to the first posture information and the second posture information.

[0014] The present application sets a projection module on the first shell, connects the first shell and the first belt portion, and connects the second shell and the second belt portion. The first shell and the second shell are releasably connected through the first connecting portion and the second connecting portion to realize the releasable installation of the entire projection device on the belt portion, thereby improving the portability and compatibility of the projection device, and facilitating the efficient connection between the projection device and existing belt-belt electronic products. Users can configure it to the existing belt-belt wearable device according to their needs, further facilitating users to view digital information through the projection module.

[0015] Additional aspects and advantages of the embodiments of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic structural diagram of an embodiment of a projection device provided in an embodiment of the present application;

[0018] Figure 2 A schematic structural diagram of another embodiment of the projection device provided in an embodiment of the present application;

[0019] Figure 3 A schematic diagram of a distributed system of a projection device provided in an embodiment of the present application;

[0020] Figure 4A schematic diagram of an embodiment of the present application showing an embodiment of a projection device and a wearable device combined with a belt portion being opened;

[0021] Figure 5 A schematic diagram of an embodiment of a belt closure for combining a projection device and a wearable device provided in an embodiment of the present application;

[0022] Figure 6 A schematic diagram of another embodiment of a belt closure for combining a projection device and a wearable device provided in an embodiment of the present application;

[0023] Figure 7 A schematic diagram of an embodiment of the projection device provided in an embodiment of the present application projecting a scene on the wrist;

[0024] Figure 8 A schematic diagram of a flow chart of an embodiment of a projection method provided in an embodiment of the present application;

[0025] Figure 9 A system diagram of a wearable device based on a projection device provided in an embodiment of the present application. Specific embodiments

[0026] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0027] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0028] In this application, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described in this application as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that one of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.

[0029] The embodiments of the present application provide a projection device, a wearable device, and a projection method, which are described in detail below.

[0030] See also Figure 1-7 An embodiment of the present application provides a projection device 110, which is applied to a wearable device 220. The projection device 110 includes a first shell 10, a first side 11 of the first shell 10 is configured to allow connection with a first band portion 20, and a second side 12 of the first shell 10 away from the first side 11 is provided with a first connection portion 13; a second side 32 of the second shell 30 away from the first side 31 of the second shell 30 is provided with a second connection portion 33, and the second connection portion 33 is configured to releasably engage with the first connection portion 13, wherein the first shell 10 is further provided with a accommodating cavity 14 and a projection window 15 connected to the accommodating cavity 14.

[0031] The second shell 30, the first side 31 of the second shell 30 is configured to allow connection with the second belt portion 22. It can be understood that the connection described above and below includes direct connection and indirect connection, which may include snap-on connection, fixed connection with fasteners, bonding, etc. The second shell 30 is provided with a second connection portion 33 on the second side 32 opposite to the first side 31 of the second shell 30. The second connection portion 33 is configured to releasably engage the first connection portion 13 and allow the first band portion 20 and the second band portion 22 to bend at the wearer's wrist, wherein the first band portion 20 and the second band portion 22 are not a whole section that is completely connected as one, but two segments located on both sides of the main body 80 of the wearable device 210 (described in the embodiment below). The first band portion 20 can be one of the band portions of the wearable device 210, such as the left band portion, and the second band portion 22 can be one of the other band portions of the wearable device 210, such as the right band portion. The wearable device 210 can be a watch, a bracelet, etc. The first band portion 20 and the second band portion 22 can be bent to form a roughly ring-shaped structure and buckled on the user's wrist or neck, etc., ensuring that the entire projection device can be coupled to various types of wearable devices with bands; so that the projection device can be compatible with various types of wearable devices with bands to achieve projection, and allow the first band portion 20 and the second band portion 22 to bend at the wearer's wrist 60. The first belt portion 20 and the second belt portion 22 are bent to form a substantially annular structure, for example Figure 5-7 For example, the first housing 10 , the second housing 30 , the first strap 20 , and the second strap 22 ensure that the entire projection device 110 can be releasably attached to various types of wearable devices 210 , and the strap length can be adjusted as needed to accommodate wrists 60 of different sizes.

[0032] The projection module 40 is located in the accommodating cavity 14. The projection module 40 can be located entirely in the accommodating cavity 14, or a portion of the projection module 40 (such as the optical module portion) can leak out relative to the accommodating cavity 14. The light from the projection module 40 is configured to pass through the projection window 15. The projection window 15 can be light-transmissive or a hole or opening structure on the first shell 10. The optical axis direction A of the projection module 40 is set at an angle α to the direction B of the line connecting the first shell 10 to the second shell 30. It can be understood that the optical axis direction A can be the light emitting direction of the center of the projection module 40, and the line direction B connecting the first shell 10 to the second shell 30 can be the direction of the line connecting the center of the first shell 10 and the center of the second shell 30. Figure 1 For example, in the XYZ space coordinate system, the direction B may be the X-axis direction, and the optical axis direction A may be the Z-direction. In some application scenarios, the first belt portion 20 and the second belt portion 22 may include an unfolded state and a bent state. In the fully unfolded state, the first belt portion 20 and the second belt portion 22, the first shell 10 and the second shell 30 may be, for example, Figure 1 or Figure 2The coaxial line arrangement in the embodiment can obtain an included angle α of 60°, 80°, 85°, 90° and the like.

[0033] In some application scenarios, existing projection devices are often integrated into the display body 80 of the wearable device 220. However, integrating the projection module and related circuits into the display body 80 requires changing the electrical and mechanical connections of the original electrical components, which has high development costs, resulting in a larger and heavier display body 80, and the battery life is also affected accordingly, and it is not compatible with existing wearable devices. By setting an angle α between the optical axis direction A and the connecting direction B from the first shell 10 to the second shell 30, it is ensured that the projection device 110 can be installed on the belt part of the wearable device 220 instead of the display body 80, and when the projection device 110 is worn on the wearer's wrist 60, the projection window 15 can be projected onto the palm 62, back of the palm or arm where the wrist 60 is located, without affecting the function and use of the original wearable device 220. Therefore, the projection device 110 of the embodiment of the present application is compatible with the rapid combination and disassembly of various types of wearable devices 210 with straps, which facilitates flexible projection of different areas on various existing wearable devices 210, effectively improves the application scenarios of the projection device, and enables ordinary wearable devices 210 to have intelligent projection functions.

[0034] In some embodiments, in conjunction with Figure 1-7 The first side 11 and the second side 12 of the first shell 10 may be opposite sides of the same axis, the first side 31 and the second side 32 of the second shell 30 may be opposite sides of the same axis, the projection window 15 is located between the first side 11 and the second side 12 of the first shell 10, and the first shell 10 is configured to allow rotation to the side of the wearer's wrist 60 facing the palm 62, and the light of the projection module 40 is used to form an image on the wearer's palm 62. It can be understood that the projection window 15 can be located on the side of the first shell 10, for example Figure 1 In the Y direction of the XY plane, that is, in the thickness direction of the first shell 10, the surface of the wrist 60 facing away from the palm 62 is often used as the main display surface of the wearable device 210 (such as the display body of a watch). Rotating the projection window 15 to the side of the wearer's wrist 60 facing the palm 62 can facilitate the wearer to see the projected content without interfering with the main display surface. Figure 7 151 is an example of an outline of the projected content.

[0035] In some embodiments, see Figure 1-7The first shell 10 includes a top surface 101, a back surface 102, a first side surface 103 and a second side surface 104. The first side surface 103 and the second side surface 104 are respectively connected to the top surface 101 and the back surface 102. The first side surface 103 and the second side surface 104 are arranged opposite to each other. The top surface 101 and the back surface 102 are arranged opposite to each other. The first side 11 and the second side 12 of the first shell 10 can be other sides different from the top surface 101, the back surface 102, the first side surface 103 and the second side surface 104; the top surface 101, the back surface 102, the first side surface 103 and the second side surface 104 can be one or a combination of flat surfaces and curved surfaces. The back surface 102 is configured to contact the wearer's wrist 60, and the top surface 101 is away from the wearer's wrist 60. The projection window 15 is located on the first side surface 103 so that the light of the projection module 40 is imaged on the wearer's palm 62. In other embodiments, the light of the projection module 40 can also be imaged on the back of the wearer's palm. It can be understood that the top surface 101 and the back surface 102 can be XZ-shaped reference surfaces or corresponding parallel reference surfaces, and the first side surface 103 and the second side surface 104 can be XY-shaped reference surfaces or corresponding parallel reference surfaces. In other embodiments, the top surface 101, the back surface 102, the first side surface 103 and the second side surface 104 may not be planes, but one or a combination of continuous curved surfaces. At this time, the XZ and XY-shaped reference surfaces can be surfaces that are tangent to a certain point of each of the above-mentioned curved surfaces. The XYZ space coordinate system in the figure is only a simple example for conveniently describing the positional relationship of each surface, and does not strictly limit the surfaces of this application to standard cubes or rectangular parallelepiped structures surrounded by planes. In fact, the surfaces of the first shell 10 may include continuous or discontinuous curved surfaces and a combination of planes.

[0036] In some embodiments, the top surface 101 and the back surface 102 include curved surfaces that can fit the wearer's wrist 60; wherein the distance between the top surface 101 and the back surface 102 does not exceed 20 mm, for example, 20 mm, 18 mm, 15 mm, 12 mm or 10 mm, that is, the thickness of the first shell 10 ( Figure 1 In some scenarios, such as when the user is typing in the office, if the thickness here is too thick, it may easily affect the user's wrist 60 when typing on the desktop. In the prior art, many projection devices are often large in size after being combined with wearable devices, and are not compatible with the normal use of the original wearable devices. The thickness parameter design of the first shell 10 is conducive to reducing the discomfort caused by the overall thickness of the projection device 110 on the wearable device 210, ensuring that the user maintains the normal use of the original wearable device in various scenarios, and the projection window 15 is located on the first side 103. Even if the top surface 101 is attached to the desktop during use, it will not cause wear on the projection module 40.

[0037] In some embodiments, the projection device 110 may further include a third housing 50. One side of the third housing 50 is configured to be removably connected to the first side 11 of the first housing 10, and the other side of the third housing 50 is configured to allow connection to the first strap portion 20. It is understood that the third housing 50 is first connected to the first strap portion 20, and then connected to the first housing 10. This connection may be achieved by, for example, snapping or gluing. This helps reduce the structural complexity of the first housing 10 and lowers its production cost. Furthermore, the electrical components of the first housing 10 can be designed before being assembled with the third housing 50, minimizing mold and design costs while improving overall assembly efficiency. In some embodiments, the third housing 50 and the first housing 10 have the same shape, ensuring a consistent appearance, further reducing mold costs, and maintaining an aesthetically pleasing overall appearance. The length of the first housing 10 can be greater than that of the second and third housings 30 and 50. This allows all relevant components of the projection device 40 to be effectively integrated into the first housing 10, facilitating the division of labor in design and manufacturing.

[0038] In some embodiments, the first connection portion 13 and the second connection portion 33 include mutually attracted magnetic members; for example, the first connection portion 13 and the second connection portion 33 are different magnets, or one is a magnet and the other is an attractable metal.

[0039] In some embodiments, the first connecting portion 13 and the second connecting portion 33 include protrusions and grooves that engage with each other. For example, the first connecting portion 13 includes a protrusion and the second connecting portion 33 includes a groove, and the two are engaged with each other. Of course, the order of the two can also be reversed to achieve the engagement. In some embodiments, the length of the first strap portion 20 can extend into the groove of the second connecting portion 33 and be engaged by the protrusion of the first connecting portion 13.

[0040] In some embodiments, in conjunction with Figure 1-7 The projection device 110 may further include a locking member 35, which is movably connected to the first housing 10 and / or the second housing 30. For example, the locking member 35 may be movably connected to the first housing 10 and protrude relative to the top surface 101, or may be located at the first side surface 103 or the second side surface 104, or the locking member 35 may be movably connected to the second housing 30 and protrude relative to the housing 30. The locking member 35 is configured to allow the first connecting portion 13 and the second connecting portion 33 to remain fixed in the first position, and to allow the first connecting portion 13 and the second connecting portion 33 to separate in the second position. The user can quickly operate the locking member 35 to quickly fix or separate the first connecting portion 13 and the second connecting portion 33 as needed.

[0041] In some embodiments, in conjunction with Figure 5-6The first shell 10, the second shell 30 and / or the third shell 50 have a curved surface on one side facing the wearer's wrist 60; the first shell 10 and the third shell 50 are symmetrically designed relative to the projection window 15, which is conducive to ensuring that the overall projection device 110 is more beautiful and the weight distribution is more even, wherein the surfaces of the first shell 10, the second shell 30 and the third shell 50 transition smoothly in sequence, that is, there are no obvious steps, making the whole more beautiful.

[0042] In some embodiments, in conjunction with Figure 3The projection module 40 includes a microdisplay 41 and an optical module 42. The optical module 42 is located on the light-emitting side of the microdisplay 41. The microdisplay 41 can be a Micro-LED (Micro Light-Emitting Diode), uLED (Micro Light-Emitting Diode), Micro-OLED (Micro Organic Light-Emitting Diode), LCoS (Liquid Crystal On Silicon), LCD (Liquid Crystal Display), DMD (Digital Micromirror Device) / DLP (Digital Light Processing), or LBS (Laser Beam Scanning), or any combination of these technologies. The microdisplay 41 can provide an image source, such as text, video, information prompts, etc. The projection window 15 is provided with an optical protection sheet 152, which is located on the light-emitting side of the optical module 42. The projection device also includes a control circuit 70, a battery 71, a communication unit 76, and at least one vital sign sensor 74 located within the first housing 10. The control circuit 70 is electrically connected to the microdisplay 41, the battery 71, the communication unit 76, and the at least one vital sign sensor 74. The vital sign sensor 74 may include a blood glucose sensor, an electromyography sensor, a galvanic skin sensor, a heart rate sensor, a pulse sensor, etc. At least one sensor 74 faces the wearer and is configured to detect the wearer's vital signs. For example, it may be located on the wearer's wrist 60 to detect the wearer's pulse, heart rate, blood oxygen level, blood pressure, etc. In other embodiments, the sensor 74 may also include an inertia sensor, a pressure sensor, a gyroscope sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a distance sensor, a proximity sensor, a fingerprint sensor, a temperature sensor, a touch sensor, an ambient light sensor, and the like. The communication unit 76 may be, for example, Bluetooth, 2.4G, or WiFi, and the battery 71 may be, for example, a lithium battery or a replaceable battery. The above design enables the projection device 110 to implement communication and intelligent vital sign monitoring functions, facilitating integration with ordinary mechanical watches, allowing non-smart watches to also have smart watch functions. It is understood that the projection device 110 may also include, for example, an interface module 73 and an interaction module 75. The interface module 73 may be an electrical interface or data transmission interface such as Type-C, USB, or metal contacts, and the interaction module 75 may be, for example, a key, voltage, or capacitive touch sensor interaction to implement command operations on the projection device 110.

[0043] See also Figure 4-79. The embodiment of the present application also provides a wearable device 220. The wearable device 220 can be connected to a smart terminal 230 such as a mobile phone or a computer to realize data interaction, or the wearable device 220 can be directly connected to the server 220 to realize data interaction. Of course, in other embodiments, the wearable device 220 can also be indirectly connected to the server 220 through the smart terminal 230 to realize data interaction.

[0044] The wearable device 220 may include a display body 80; the display body 80 may be, for example, a watch dial, a bracelet display screen, etc.; the first band portion 20 is connected to one end of the display body 80, for example, it can be rotatably connected by a rotating shaft 222; the second band portion 22 is connected to the other end of the display body 80, for example, it can be rotatably connected by a rotating shaft 222; it can be understood that the first band portion 20 and the second band portion 22 are located on both sides of the display body 80, and the projection device 110 is arranged between the first band portion 20 and the second band portion 22, thereby realizing the connection of the first band portion 20 and the second band portion 22 into a ring-shaped whole. For the structure, function and working principle of the projection device 110, please refer to the description of the above embodiment, which will not be repeated here.

[0045] See Figure 8-9 The present application also provides a projection method, which is applied to the projection device described in the above embodiment. The method includes:

[0046] S11: Acquire first posture information of the wrist where the projection device is located.

[0047] Among them, the first posture information can be, for example, a posture parameter obtained by the sensor of the projection device in the initial wearing state, such as the position rotation angle or direction of the wrist. For example, the first posture information can be reflected as the palm 62 of the user's wrist 60 facing downward (towards the ground), and the wearer's eyes cannot directly see the palm 62.

[0048] S12: Acquire second posture information based on the change of the first posture information.

[0049] The projection device is controlled to perform projection based on the second posture information. The second posture information is different from the first posture information. That is, as long as the wrist 60 moves, such as when the position rotation angle or direction of the wrist changes, such as when the wrist is rotated or shaken, the second posture information different from the first posture information is obtained. For example, a change in wrist position can be reflected as the palm 62 of the user's wrist 60 facing upward (away from the ground), at which point the user's eyes can just see the palm 62. The first posture information or the second posture information can be detected by an inertia measurement sensor, etc.

[0050] S13: Controlling the projection device to perform projection according to the first posture information and the second posture information.

[0051] It is understood that when the comparison between the first posture information and the second posture information reaches a preset value, for example, when the wrist rotation angle, speed, or direction reaches a preset value, the projection device is controlled to perform projection. The projection data source can come from a smart terminal such as a mobile phone, computer, or smart glasses, or from the display body 80 of the wearable device, i.e., the content of the dial, so that elderly people with poor eyesight can also see the content on their watch. In other embodiments, the projection data source can also come from the server.

[0052] The present application can realize projection control by detecting the change information of the first posture information and the second posture information, which greatly simplifies the user's interactive operation logic and improves the user's projection interaction efficiency and experience.

[0053] In some embodiments, before step S11, the method may further include: establishing a first connection between the projection device 110 and an electronic device, where the electronic device may be a mobile phone, a computer, smart glasses, a watch, a bracelet, etc. The first connection may be wired or wireless, and the wireless connection may be, for example, Bluetooth, 2.4g, 5g or WiFi, etc., to ensure that the projection device 110 has established a stable data transmission channel.

[0054] In some embodiments, the projection control of the projection device can also be achieved by obtaining a first control instruction for controlling the projection device, and the first control instruction is obtained through a button or a touch screen.

[0055] In other embodiments, step S13 may further include: S131: obtaining whether the palm 62 corresponding to the wearer's wrist 60 where the projection device 110 is located is unfolded; if so, controlling the projection device 110 to project onto the palm 62. It will be appreciated that by simultaneously detecting wrist posture changes and whether the palm is unfolded to control projection display, erroneous operations caused by posture changes can be reduced. Projecting when the palm is unfolded is beneficial for enhancing user interaction and facilitating the user to actively activate projection display when needed.

[0056] In specific implementation, the above units or structures can be implemented as independent entities, or can be arbitrarily combined to implement as the same or several entities. The specific implementation of the above units or structures can refer to the previous method embodiments and will not be repeated here.

[0057] The above description is an embodiment of the present application, and does not limit the scope of protection of the present application. The description of the above embodiment is only used to help understand the method and core idea of ​​the present application; at the same time, for those skilled in the art, according to the idea of ​​the present application, there will be changes in the specific embodiments and application scope. Any equivalent device or equivalent process transformation made using the contents of the description and drawings of the present invention, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A projection device, applied to a wearable device, characterized in that: include: A first housing (10), wherein a first side (11) of the first housing (10) is configured to allow connection with a first belt portion (20), and a second side (12) of the first housing (10) away from the first side (11) is provided with a first connection portion (13); wherein the first housing (10) is further provided with a receiving cavity (14) and a projection window (15) communicating with the receiving cavity (14); a second shell (30), wherein a first side (31) of the second shell (30) is configured to allow connection with a second belt portion (22), and a second side (32) of the second shell (30) away from the first side (31) of the second shell (30) is provided with a second connecting portion (33), wherein the second connecting portion (33) is configured to be releasably coupled to the first connecting portion (13) and to allow both the first belt portion (20) and the second belt portion (22) to bend at a wearer's wrist (60); A projection module (40) is located in the accommodating cavity (14), and light from the projection module (40) is configured to be transmitted through the projection window (15). The optical axis direction (A) of the projection module (40) and the direction (B) of the line connecting the first shell (10) to the second shell (30) are arranged at an angle α.

2. The projection device according to claim 1, wherein: The first side (11) and the second side (12) of the first shell (10) are opposite sides of the same axis, the first shell (10) and the second shell (30) are configured to allow rotation relative to the wearer's wrist (60), the projection window (15) is located between the first side (11) and the second side (12) of the first shell (10) and faces the side of the palm (62) where the bowl (60) is located, the light of the projection module (40) is used to form an image on the palm (62), and the angle α satisfies: 80°≤α≤90°.

3. The projection device according to claim 1, wherein: The first shell (10) includes a top surface (101), a back surface (102), a first side surface (103) and a second side surface (104), wherein the first side surface (103) and the second side surface (104) are respectively connected to the top surface (101) and the back surface (102), the first side surface (103) and the second side surface (104) are arranged opposite to each other, the top surface (101) and the back surface (102) are arranged opposite to each other, and the back surface (102) is configured to contact the wrist (60) of the wearer, and the projection window (15) is located on the first side surface (103) so that the light of the projection module (40) is imaged on the palm (62) of the wearer.

4. The projection device according to claim 3, wherein: The top surface (101) and the back surface (102) include curved surfaces, and the distance between the top surface (101) and the back surface (102) does not exceed 20 mm.

5. The projection device according to claim 1, wherein: The projection device further comprises a third shell (50), one side of the third shell (50) being configured to be detachably connected to the first side (11) of the first shell (10), and the other side of the third shell (50) being configured to allow connection with the first belt portion (20), the third shell (50) and the first shell (10) having the same shape, and the length of the first shell (10) being greater than the lengths of the second shell (30) and the third shell (50).

6. The projection device according to claim 5, characterized in that The first shell (10), the second shell (30) and / or the third shell (50) have a curved surface on one side facing the wearer's wrist (60); and the first shell (10) and the third shell (50) are symmetrically designed relative to the projection window (15).

7. The projection device according to claim 1, wherein: The projection module (40) includes the microdisplay (41) and an optical module (42), wherein the optical module (42) is located on the light-emitting side of the microdisplay (41); the projection window (15) is provided with an optical protective sheet (152), wherein the optical protective sheet (151) is located on the light-emitting side of the optical module (42); the projection device further includes a control circuit (70), a battery (71), a communication unit (76), and at least one sensor (74) located in the accommodating cavity (14); the control circuit (70) is electrically connected to the microdisplay (41), the battery (71), the communication unit (76), and at least one vital sign sensor (74); the sensor (74) faces a side of the wearer's wrist (60) and is configured to detect the wearer's vital signs.

8. The projection device according to claim 1, wherein: The first connecting portion (13) and the second connecting portion (33) include magnetic parts that attract each other; Alternatively, the first connecting portion (13) and the second connecting portion (33) include protrusions and grooves that are engaged with each other.

9. The projection device according to claim 1, wherein: The projection device further comprises a locking member (35), wherein the locking member (35) is movably connected to the first shell (10) and / or the second shell (30), and the locking member (35) is configured to allow the first connecting portion (13) and the second connecting portion (33) to remain fixed when in a first position, and to allow the first connecting portion (13) and the second connecting portion (33) to be separated when in a second position.

10. A wearable device, characterized in that: include: Display Subject (80); A first belt portion (20) is connected to one end of the display body (80); a second belt portion (22) is connected to the other end of the display body (80) away from the first belt portion (20); and The projection device according to any one of claims 1 to 9.

11. A projection method, applied to the projection device according to any one of claims 1 to 9, characterized in that: The method comprises: Acquiring first posture information of the wrist (60) where the projection device is located; Acquire second posture information obtained based on a change in the first posture information; The projection device is controlled to perform projection according to the first posture information and the second posture information.

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