Navigation projection device

Abstract

The utility model discloses a navigation projection device, and relates to the technical field of projection. The device comprises a shell, an image processor, a reflecting prism assembly, a laser and a focusing lens, a plurality of reflecting prisms are evenly installed on the surface of a reflecting prism carrier plate at intervals in the circumferential direction of the prism carrier plate, and an included angle alpha is formed between the reflecting surface of each reflecting prism and the surface of the prism carrier plate; and included angles alpha between the plurality of reflecting prisms arranged along the circumferential direction of the prism carrier plate and the reflecting prism carrier plate are gradually increased. According to the device, in the process that the reflecting prisms are arranged at different inclination angles and the driving part drives the reflecting prism carrier plate to rotate at a high speed, laser reflected by the reflecting prisms finally forms a plurality of similar line segments which are different from each other up and down in sequence on the projection surface, and vision persistence is formed under continuous refreshing scanning through high-speed rotation; therefore, the projection of navigation images and other information is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of projection, and more specifically to a navigation projection device. Background Art

[0002] With the growing demand for high-quality life, researchers have been exploring more efficient and accurate projection technologies. For example, laser projection technology can achieve high-brightness, high-contrast projection effects, and has a long lifespan and low power consumption.

[0003] However, along with the high-precision projection technology, the cost of traditional projectors on the market has become high and their use is limited to indoors, mainly used in closed and fixed places such as family life, conferences and lectures. Their shortcomings such as large size and high power consumption have gradually been exposed. The application of projection is limited to these traditional places.

[0004] In the bicycle field which has been hot in recent years, if projection and navigation can be innovatively combined, and map information and route navigation information can be intuitively presented to users through projection, it will improve the quality of life of users and make breakthroughs in portability and low power consumption, thus realizing portable mobile navigation projection installed on bicycles, which just meets the growing high-quality demands of the majority of bicycle enthusiasts.

[0005] Therefore, how to provide a navigation projection device that can organically combine navigation information with projection technology is a problem that those skilled in the art need to solve urgently. Utility Model Content

[0006] In view of this, the utility model aims to provide a navigation projection device which can project navigation information while driving.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A navigation projection device comprises: a housing, wherein a mounting hole is provided on one side wall of the housing;

[0009] A housing, wherein a mounting hole is provided on one side wall of the housing;

[0010] An image processor, wherein the image processor is fixed on the inner bottom wall of the housing and an image input end of the image processor is communicatively connected with an external navigation device to receive navigation image information;

[0011] A reflective prism assembly, the reflective prism assembly comprising a reflective prism carrier, a plurality of reflective prisms and a driving assembly, the reflective prism carrier is arranged corresponding to a side away from the mounting hole, a plurality of the reflective prisms are evenly spaced and installed on a surface of the reflective prism carrier along a circumferential direction of the reflective prism carrier, and an angle α is formed between a reflective surface of each of the reflective prisms and the surface of the reflective prism carrier, and the angle α between the plurality of reflective prisms arranged along the circumferential direction of the reflective prism carrier and the reflective prism carrier gradually increases; the driving assembly is communicatively connected to an external navigation device to receive navigation image information, and drives the reflective prism carrier to rotate;

[0012] A laser, the laser being fixed on the inner bottom wall of the housing between the corresponding reflective prism and the mounting hole, the emission end of the laser corresponding to the incident surface of any one of the reflective prisms and being electrically connected to the image processor;

[0013] A focusing lens is installed in the installation hole to receive the laser reflected by the reflection prism.

[0014] The beneficial effects that can be achieved by the utility model are as follows: the image processor controls the laser to emit laser after processing the received navigation image information, and at the same time, the driving component adjusts the rotation speed and rotation angle according to the received navigation image information, so that the prisms arranged at different inclination angles rotate to the corresponding laser emission end, and the laser is irradiated to the reflective prism and then reflected to the focusing lens and projected onto the external display surface. Since there are multiple reflective prisms, during the high-speed rotation of the reflective prism carrier, the laser switches back and forth between the multiple reflective prisms arranged at different inclination angles, and the reflected laser eventually forms multiple similar upper and lower different line segments on the projection surface, and forms visual persistence under the high-speed rotation and continuous refreshing scanning, thereby realizing the projection of navigation images and other information.

[0015] Preferably, the driving assembly includes a driving motor controller and a driving motor, the driving motor controller is fixed on the inner bottom wall of the shell and the driving motor controller is communicatively connected to an external navigation device to receive navigation image information, and the driving motor is electrically connected to the driving motor controller.

[0016] Preferably, the driving motor is a PCB brushless motor.

[0017] Preferably, the included angles α between the reflective surfaces of the plurality of reflective prisms and the reflective prism carrier are arranged in an equidistant manner along the circumferential direction of the reflective prism carrier.

[0018] Preferably, the laser includes: a support assembly, a laser emitter and a laser controller; the laser emitter support assembly is fixed on the inner bottom wall of the shell, the laser emitter is installed on the top of the support assembly, and the laser controller is fixed on the inner bottom wall of the shell and electrically connected to the laser emitter.

[0019] Preferably, the support assembly includes: a base, a support rod and a pitch drive assembly, the base is fixed on the inner bottom wall of the shell, the support rod is rotatably installed on the top of the base, the middle part of the laser emitter is hinged on the top of the support rod, and the driving end of the laser pitch drive assembly is connected to one side of the bottom of the laser emitter to drive the pitch movement of the laser emitter.

[0020] Preferably, the pitch drive assembly includes a permanent magnet, a coil and a pitch controller, the permanent magnet is fixed to one side of the bottom of the laser transmitter, the coil is fixed to the base corresponding to the bottom of the permanent magnet, and the pitch controller is fixed to the inner bottom wall of the shell and electrically connected to the coil.

[0021] Preferably, a return spring is further provided, one end of which is fixed to the other side of the bottom of the laser emitter, and the other end of which is fixed to the top of the base.

[0022] Preferably, a sponge anti-collision column is further provided, wherein the sponge anti-collision column is sleeved in the reset spring and the bottom end thereof is fixed on the base.

[0023] Preferably, the focusing lens is a convex lens.

[0024] It can be seen from the above technical solutions that, compared with the prior art, the utility model discloses a navigation projection device, which has the following beneficial effects:

[0025] 1. The navigation projection device drives the motor controller to control the motor rotation according to the navigation image information, and the laser emits a laser beam according to the navigation image information. Under the high-speed rotation of the motor, a plurality of circumferentially arranged reflective prisms with different inclination angles reflect the laser beam to the projection surface, thereby projecting the navigation image information onto the projection surface for easy use during driving.

[0026] 2. The navigation projection device realizes an innovative combination of the projection field and the navigation field, solves the application limitation of traditional projection equipment that is only suitable for fixed places such as homes and offices, and expands its application scope.

[0027] 3. The use of PCB brushless motor drive can transmit current more effectively, reduce energy loss, and improve the overall efficiency of the motor. Compared with the traditional iron core stator structure, the PCB stator can reduce energy loss such as iron loss and achieve higher power density, that is, it can output more power in the same volume, while reducing the vibration and noise of the motor during operation, improving the running stability of the motor, and improving the projection effect in the mobile state. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0029] Figure 1 The present invention is a perspective structural diagram of a navigation projection device provided by the present invention.

[0030] Figure 2 This is a schematic structural diagram of the reflective prism carrier plate and the reflective prism provided by the utility model.

[0031] Figure 3 for Figure 2 Schematic diagram of the structure of the AA section.

[0032] Figure 4 This is a schematic diagram of the structure of the laser provided by the utility model.

[0033] Figure 5 This is a schematic diagram of the structure of the prism assembly provided by the utility model.

[0034] In the figure: 1. shell, 2. image processor, 3. laser, 31. support assembly, 311. base, 312. support rod, 313. permanent magnet, 314. coil, 315. pitch controller, 316. return spring, 317. sponge anti-collision column, 32. laser transmitter, 4. drive assembly, 41. drive motor controller, 42. drive motor, 5. reflective prism carrier, 6. reflective prism, 7. focusing lens. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 a limitation on the present invention.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] See also Figure 1-Figure 5 , the utility model embodiment discloses a navigation projection device, comprising: a housing 1, a side wall of the housing 1 is provided with a mounting hole;

[0039] An image processor 2, the image processor 2 is fixed on the inner bottom wall of the housing 1 and its image input end is communicatively connected with an external navigation device to receive navigation image information;

[0040] A reflecting prism assembly, the reflecting prism assembly comprises a reflecting prism carrier plate 5, a plurality of reflecting prisms 6 and a driving assembly 4, the reflecting prism carrier plate 5 is arranged corresponding to a side away from the mounting hole, the plurality of reflecting prisms 6 are evenly spaced and installed on the surface of the reflecting prism carrier plate 5 along the circumferential direction of the reflecting prism carrier plate 5, and an angle α is formed between the reflecting surface of each reflecting prism 6 and the surface of the reflecting prism carrier plate 5, and the angle α between the plurality of reflecting prisms 6 arranged along the circumferential direction of the reflecting prism carrier plate 5 and the reflecting prism carrier plate 5 gradually increases; the driving assembly 4 is connected to an external navigation device in communication to receive navigation image information, and drives the prism carrier plate to rotate;

[0041] Laser 3, laser 3 is fixed on the inner bottom wall of housing 1 between corresponding reflective prism 6 and mounting hole, and the emission end of laser 3 corresponds to the incident surface of any reflective prism 6 and is electrically connected to image processor 2;

[0042] A focusing lens 7 is installed in the installation hole to receive the laser reflected by the reflection prism 6.

[0043] The image processor 2 controls the laser 3 to emit laser after processing the received navigation image information. At the same time, the driving component 4 adjusts the rotation speed and rotation angle according to the received navigation image information, so that the prisms 6 arranged at different inclination angles rotate to the corresponding laser emitting end. The laser is irradiated to the reflecting prism 6 and then reflected to the focusing lens 7 and projected onto the external display surface. Since there are multiple reflecting prisms 6, during the process of the driving unit driving the reflecting prism carrier to rotate at a high speed, the lasers reflected by the multiple reflecting prisms 6 eventually form multiple similar upper and lower different line segments on the projection surface in succession. Under the high-speed rotation and continuous refreshing scanning, visual persistence is formed, thereby realizing the projection of navigation image and other information. When the device is installed on a bicycle, the projection surface can be on the ground.

[0044] In a specific example, the driving assembly 4 includes a driving motor controller 41 and a driving motor 42. The driving motor controller 41 is fixed on the inner bottom wall of the housing 1 and is connected to an external navigation device for receiving navigation image information. The driving motor 42 is electrically connected to the driving motor controller 41. The reflective prism carrier 5 is vertically mounted on the output shaft end of the driving motor 42. The driving motor controller 41 controls the opening and closing of the driving motor 42 and the adjustment of the rotation speed according to the received navigation image information.

[0045] In a specific example, the driving motor 42 is a PCB brushless motor.

[0046] PCB brushless motor includes:

[0047] The stator assembly 421 includes a stator fixing seat 4211, a PCB stator circuit board 4212 and a stator coil 4213. The stator fixing seat 4211 is fixed on the inner wall of the housing 1 corresponding to the emission end of the laser 3. The PCB stator circuit board 4212 is fixed on the side of the stator fixing seat 4211 away from the inner wall of the housing 1. The stator coil 4213 is installed on the side of the PCB stator circuit board 4212 away from the stator fixing seat 4211.

[0048] The rotor assembly 422 includes an output shaft 4221, a rotor plate 4222 and a rotor permanent magnet 4223. One end of the output shaft 4221 passes through the stator circuit board 4212 and is rotatably mounted on the stator fixing seat 4211. The rotor plate 4222 is rotatably connected to the output shaft 4221. The rotor permanent magnet 4223 is mounted on the rotor plate 4222. The reflective prism carrier plate 5 is mounted on the plate surface of the rotor plate 4222 away from the stator circuit board 4212, and is rotatably connected to the output shaft 4221 through a ceramic bearing.

[0049] In a specific example, the angles α formed between the reflection surfaces of the plurality of reflection prisms 6 and the reflection prism carrier plate 5 are arranged in equal intervals along the circumferential direction of the reflection prism carrier plate 5. In a specific embodiment, there are eight reflection prisms 6, and the angles α between the eight reflection prisms 6 and the reflection prism carrier plate 5 are 15°, 20°, 25°, 30°, 35°, 40°, 45°, and 50°, respectively.

[0050] In a specific example, the laser 3 includes: a support assembly 31, a laser emitter 32 and a laser controller; the support assembly 31 is fixed on the inner bottom wall of the housing 1, the laser emitter 32 is installed on the top of the support assembly 31, the laser controller is fixed on the inner bottom wall of the housing 1 and is electrically connected to the laser emitter 32, and the image processor is electrically connected to the laser controller. The PWM signal of the image information processed by the image processor generates a point or line laser (the duration of the high level of the laser source) and is emitted by the laser emitter 32.

[0051] In a specific example, the support assembly 31 includes: a base 311, a support rod 312 and a laser pitch drive assembly, the base 311 is fixed on the inner bottom wall of the shell 1, the support rod 312 is rotatably installed on the top of the base 311, the middle part of the laser emitter 32 is hinged on the top of the support rod 312, and the driving end of the laser pitch drive assembly is connected to one side of the bottom of the laser emitter 32 to drive the laser emitter 32 to pitch.

[0052] In a specific example, the pitch drive assembly includes a permanent magnet 313, a coil 314 and a pitch controller 315, wherein the permanent magnet 313 is fixed to one side of the bottom of the laser emitter 32, the coil 314 is fixed to the base below the corresponding permanent magnet 313, and the pitch controller 315 is fixed to the inner bottom wall of the shell 1 and is electrically connected to the coil 314. Through the controller, the magnetic field generated by the coil 314 interacts with the permanent magnet 313 below to adjust the pitch angle of the laser emitter 32. The pitch controller 315 includes a ToF ranging module, which measures the distance between the laser emitter 32 and the top surface of the base in real time to determine the pitch state of the laser emitter 32, thereby achieving precise control of the pitch angle of the laser emitter 32 and playing a role in adjusting the size of the laser imaging.

[0053] In a specific example, a return spring 316 is further provided, one end of which is fixed to the other side of the bottom of the laser emitter 32 and the other end is fixed to the top of the base, so as to restore the laser emitter 32 to its original position.

[0054] In a specific example, a sponge anti-collision column 317 is further provided, and the sponge anti-collision column 317 is sleeved in the return spring 316 and its bottom end is fixed on the base to prevent the laser emitter 32 from colliding with the base.

[0055] In a specific example, the focusing lens 7 is a convex lens, which focuses the laser beam, thereby improving the focal intensity and clarity of the laser.

[0056] Among them, the motor adopts an ultra-thin rotor plate 4112, an ultra-thin rotor permanent magnet 4113, an ultra-thin reflective prism carrier plate 5 and an ultra-thin convex lens, which reduces the volume occupied by each structure, making the overall volume of the device smaller and easier to carry and move.

[0057] Working principle: The drive motor controller 41 receives image information from the navigation device through UART, and the microcontroller parses the navigation data, extracts and specifically encodes the parsed useful data to achieve preprocessing of data signal conversion, and in the microcontroller, through advanced control algorithms, calculates the PWM signal required by the current motor from the preprocessed target data value, and then translates the image information into a corresponding set of voltage signals and transmits them to the PCB brushless motor, so as to achieve precise control of the rotation angle and rotation speed of the motor, and in the process drives the reflection prism carrier 5 with different inclination angles 6 to rotate. The drive motor controller 41 adjusts the rotation angle of the drive motor 42 according to the image information, so that the prism with the corresponding inclination angle rotates to the position of the corresponding laser. Through the combination of different rotation angles of the motor, the laser is reflected to different positions.

[0058] As the reflective prism carrier 5 rotates, the reflective prism 6 irradiated by the laser beam is constantly changed, and the lasers reflected by the multiple reflective prisms 6 eventually form multiple similar vertically different line segments on the projection surface. Under the high-speed rotation and continuous refreshing scanning, visual persistence is formed, thereby realizing the projection of navigation image information.

[0059] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0060] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A navigation projection device, characterized in that: include: A housing (1), wherein a mounting hole is provided on one side wall of the housing (1); An image processor (2), the image processor (2) being fixed on the inner bottom wall of the housing (1) and having an image input end thereof communicatively connected to an external navigation device to receive navigation image information; A reflective prism assembly, the reflective prism assembly comprising a reflective prism carrier plate (5), a plurality of reflective prisms (6) and a drive assembly (4), the reflective prism carrier plate (5) being arranged corresponding to a side away from the mounting hole, the plurality of reflective prisms (6) being evenly spaced and mounted on the surface of the reflective prism carrier plate (5) along the circumferential direction of the reflective prism carrier plate (5), and an angle α being formed between the reflective surface of each reflective prism (6) and the surface of the reflective prism carrier plate (5), and the angle α between the plurality of reflective prisms (6) arranged along the circumferential direction of the reflective prism carrier plate (5) and the reflective prism carrier plate (5) gradually increases; the drive assembly (4) being communicatively connected to an external navigation device to receive navigation image information, and driving the reflective prism carrier plate (5) to rotate; A laser (3), the laser (3) being fixed on the inner bottom wall of the housing (1) between the corresponding reflective prism (6) and the mounting hole, the emission end of the laser (3) corresponding to the incident surface of any one of the reflective prisms (6) and being electrically connected to the image processor (2); A focusing lens (7) is installed in the installation hole to receive the laser reflected by the reflection prism (6).

2. A navigation projection device according to claim 1, characterized in that: The driving assembly (4) comprises a driving motor controller (41) and a driving motor (42); the driving motor controller (41) is fixed to the inner bottom wall of the housing (1) and the driving motor controller (41) is communicatively connected to an external navigation device to receive navigation image information; the driving motor (42) is electrically connected to the driving motor controller (41); and the reflective prism carrier plate (5) is vertically mounted on the end of the output shaft of the driving motor (42).

3. A navigation projection device according to claim 2, characterized in that: The driving motor (42) is a PCB brushless motor.

4. A navigation projection device according to claim 1, characterized in that: The included angles α between the reflection surfaces of the plurality of reflection prisms (6) and the reflection prism carrier plate (5) are arranged in an equidistant manner along the circumferential direction of the reflection prism carrier plate (5).

5. The navigation projection device according to claim 1, characterized in that: The laser (3) comprises: a support component (31), a laser emitter (32) and a laser controller; the support component (31) is fixed on the inner bottom wall of the housing (1); the laser emitter (32) is mounted on the top of the support component (31) and its emission end corresponds to the incident surface of any one of the reflection prisms (6); the laser controller is fixed on the inner bottom wall of the housing (1) and is electrically connected to the laser emitter (32); and the image processor (2) is electrically connected to the laser controller.

6. A navigation projection device according to claim 5, characterized in that: The support assembly (31) comprises: a base (311), a support rod (312) and a pitch drive assembly, wherein the base (311) is fixed to the inner bottom wall of the housing (1), the support rod (312) is rotatably mounted on the top of the base (311), the middle portion of the laser emitter (32) is hinged to the top of the support rod (312), and the drive end of the pitch drive assembly is connected to one side of the bottom of the laser emitter (32) to drive the laser emitter (32) to pitch.

7. A navigation projection device according to claim 6, characterized in that: The pitch drive assembly comprises a permanent magnet (313), a coil (314) and a pitch controller (315); the permanent magnet (313) is fixed to one side of the bottom of the laser transmitter (32); the coil (314) is fixed to the top of the base (311) corresponding to the bottom of the permanent magnet (313); and the pitch controller (315) is fixed to the inner bottom wall of the shell (1) and is electrically connected to the coil (314).

8. A navigation projection device according to claim 7, characterized in that: A return spring (316) is also provided, one end of the return spring (316) being fixed to the other side end of the bottom of the laser emitter (32), and the other end being fixed to the top of the base (311).

9. A navigation projection device according to claim 8, characterized in that: A sponge anti-collision column (317) is also provided. The sponge anti-collision column (317) is sleeved in the return spring (316) and the bottom end thereof is fixed on the base (311).

10. The navigation projection device according to claim 1, characterized in that: The focusing lens (7) is a convex lens.

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