CN209949304U

CN209949304U - Projection equipment

Info

Publication number: CN209949304U
Application number: CN201920788824.8U
Authority: CN
Inventors: 张锋
Original assignee: Qingdao Pico Technology Co Ltd
Current assignee: Qingdao Pico Technology Co Ltd
Priority date: 2019-05-28
Filing date: 2019-05-28
Publication date: 2020-01-14
Anticipated expiration: 2029-05-28

Abstract

The utility model discloses a projection device, which comprises a base, a first supporting rod with adjustable height, a second supporting rod and a projection module; one end of the first supporting rod is arranged on the base, the other end of the first supporting rod is connected with one end of the second supporting rod through a first adjusting mechanism, and the first adjusting mechanism is configured to be capable of adjusting an included angle between the second supporting rod and the first supporting rod; the projection module passes through the second adjustment structure and sets up the other end at the second bracing piece, and second adjustment mechanism is configured to can adjust the contained angle between projection module and the second bracing piece.

Description

Projection equipment

Technical Field

The present invention relates to an electronic device, and more particularly, to a projection device.

Background

With the progress of science and technology, the application of projection technology in the life of people is becoming wide, and meanwhile, the miniaturization and the household trend of projection equipment are gradually shown. Projection units, accessory parts and shell frame structures of existing projection equipment are often integrated, and flexible adjusting mechanisms are not arranged outside the integrated projection equipment, so that adjustment can be carried out only in a small range. Generally, the existing projection device can only display content in a fixed area in one direction at a certain position. Therefore, a new projection device is needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a new projection equipment, adjustment projection direction that can be more nimble.

According to a first aspect of the present invention, there is provided a projection apparatus, comprising a base, a first support rod with adjustable height, a second support rod and a projection module;

one end of the first supporting rod is arranged on the base, the other end of the first supporting rod is connected with one end of the second supporting rod through a first adjusting mechanism, and the first adjusting mechanism is configured to be capable of adjusting an included angle between the second supporting rod and the first supporting rod;

the projection module passes through the second and adjusts the structure setting and is in the other end of second bracing piece, second adjustment mechanism is configured to can adjust the projection module with the contained angle between the second bracing piece.

Optionally or preferably, the projection module is configured to be circumferentially rotatable about its projection direction.

Alternatively or preferably, the first adjustment mechanism comprises a first hinge shaft and a bracket;

the first hinge shaft is perpendicular to the plane of the first support rod and the second support rod;

one end of the support is connected with the first hinge shaft, and the other end of the support is connected with the first support rod.

Optionally or preferably, the first support rod comprises an inner tube, an outer tube and a locking nut;

the bracket is fixedly connected with the inner pipe;

the outer pipe sleeve is arranged outside the inner pipe, threads matched with the locking nut are arranged outside the outer pipe, and the outer pipe is provided with a groove along the axial direction.

Alternatively or preferably, the second adjustment mechanism comprises a second hinge shaft and a spindle;

the second hinge shaft is perpendicular to the plane of the first support rod and the second support rod;

one end of the rotating shaft is connected with the second hinge shaft, and the other end of the rotating shaft is connected with the projection module;

the projection module is configured to rotate circumferentially around the rotating shaft.

Optionally or preferably, an elastic pressing piece is arranged inside the projection module, the other end of the rotating shaft penetrates through an opening in the center of the elastic pressing piece, and the elastic pressing piece presses the rotating shaft.

Optionally or preferably, a rotating disc is arranged on the base, and the first support rod is fixedly connected with the rotating disc.

Optionally or preferably, the projection device further comprises a first position sensor disposed at the first adjustment mechanism and a second position sensor disposed at the second adjustment mechanism;

the projection equipment is provided with a control module, and the control module is used for determining the projection direction of the projection module according to the sensing data output by the first position sensor and the second position sensor, and replacing projection content and/or adjusting the display direction of the projection content according to the projection direction.

Optionally or preferably, the projection module is further provided with an inertial sensor;

the projection equipment is provided with a control module, and the control module is used for replacing projection contents and/or adjusting the display direction of the projection contents according to the sensing data output by the inertial sensor.

Optionally or preferably, the projection module further comprises a visible light camera and/or an infrared camera; the projection device further comprises any one or a combination of the following modules: the device comprises an object recognition module, a face recognition module and a gesture recognition module.

According to the utility model provides a projection equipment is equipped with a plurality of adjustment mechanism and adjusts the projection direction for projection equipment uses more in a flexible way.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic perspective view of a projection apparatus provided in an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of area A of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the area B in FIG. 1;

FIG. 4 is an enlarged partial schematic view of FIG. 3;

FIG. 5 is a schematic cross-sectional view of region C of FIG. 1;

fig. 6 is a schematic bottom view of a projection apparatus according to an embodiment of the present invention.

Reference numerals:

1-a base, 2-a first supporting rod, 3-a second supporting rod and 4-a projection module; a1-first hinge axis, A2-bracket, 21-inner tube, 22-outer tube, 23-lock nut; b1-a second hinge shaft, B2-a rotating shaft, B3-an elastic pressing sheet, B21-a stop part, B31-a screw and B32-a gap; c1-rotating disc; 41-projection lens, 42-visible light camera, 43-infrared camera, 44-infrared lamp, 45-loudspeaker, 46-microphone, 47-LED lamp, 48-shell; 5-camera, 6-touch panel, 7-control key;

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

The following describes a projection device provided by an embodiment of the present invention with reference to fig. 1 to 6.

Referring to fig. 1 and 6, the projection apparatus includes a base 1, a first support rod 2, a second support rod 3, and a projection module 4, which are connected in sequence.

The base 1 and the projection module 4 are respectively provided with a circuit structure, and the two circuit structures are electrically connected and communicated with each other through cables. The chassis 1 and the projection module 4 are also provided with heat dissipation members, such as a fan and a heat sink.

The projection device is an intelligent device with an intelligent system, and is provided with a control module and a plurality of functional units. The control module can be realized by adopting a processor, a singlechip, a special control chip and the like. The intelligent system comprises a vision recognition system and a voice recognition system, wherein the vision recognition system comprises an object recognition module, a face recognition module, a gesture recognition module and the like.

Referring to fig. 6, the projection module 4 is provided with a plurality of functional units, including: a projection lens 41, a visible light camera 42, an infrared camera 43, an infrared lamp 44, an audio output unit 45, a microphone 46 and an LED lamp 47.

The projection lens 41 is used for projecting the display content to a corresponding projection area to realize an outward projection function of the projection device.

The visible light camera 42 is used to acquire images for use by a vision recognition system of the projection device.

The LED lamp 47 is a light ring with an LED array inside. The LED lamp 47 may be used to supplement light for the visible light camera 42, provide illumination for a user, for example, to be used as a table lamp, an ambient atmosphere creating lamp, or an indicator lamp for feeding back information to the outside of the projection device.

The infrared camera 43 is used for collecting image information for the visual recognition system of the projection device.

The infrared lamp 44 is disposed near the infrared camera 43, and is used for supplementing light to the infrared camera 43 and assisting the infrared camera 43 in collecting image information.

The speaker 45 is an audio output unit and can output various audio information. The microphone 46 is used to collect sound. In this embodiment, 2 microphones 46 are adopted, and the intelligent system can realize the dual functions of sound collection and sound source position judgment through an acoustic correlation algorithm. The intelligent system can interact with the user's voice through the speaker 45 and microphone 46, using its voice recognition system.

Referring to fig. 1 and 5, the upper layer of the base 1 is provided with a rotatable turn disc C1. The upper surface of the rotating disc C1 is provided with a touch pad 6 and a control key 7, and the side surface of the rotating disc C1 on the side far away from the first supporting rod 2 is provided with a camera 5 and an illuminating lamp.

And the control key 7 and the touch pad 6 are used for receiving a control instruction of a user. The touch panel 7 may also be a touch panel having a display function to feed back information usage to the user.

Camera 5 can be used for gathering the hand image, and the light is used for 5 light supplements of camera. The camera 5 may be a visible light camera or an infrared camera.

The visual recognition system can utilize the image information collected by the visible light camera 42, the infrared camera 43 and the camera 5 to realize various visual recognition functions, such as an object recognition function, a face recognition function, a gesture recognition function and the like, so as to realize intelligent interaction with a user.

Referring to fig. 5, the base 1 is provided with a circular guide on which the turn disc C1 can rotate about the central axis of the base. One end of the first support rod 2 is fixed on the rotating disc C1, and the other end is connected with the second support rod 3 through the first adjusting mechanism. The rotation of the rotating disc C1 can drive the first supporting rod 2 to rotate, and further drive the second supporting rod 3 and the projection module 4 to rotate.

The other end of the first support rod 2 is connected with one end of the second support rod 3 through a first adjusting mechanism, and the first adjusting mechanism is configured to be capable of adjusting an included angle between the second support rod 3 and the first support rod 2. Fig. 2 is a schematic cross-sectional view of area a of fig. 1, as further described below with reference to fig. 2.

The first adjustment mechanism includes a first hinge axis a1 and a bracket a 2. The first hinge axis a1 is perpendicular to the plane of the first support bar 2 and the second support bar 3. One end of the bracket a2 is connected to the first hinge shaft a1, and the other end is connected to the first support bar 2. A complete rotation hinge is formed between the first hinge axis a1 and the bracket a2, and the second support rod 3 can rotate around the first hinge axis a1, so that the second support rod 3 can swing from the horizontal direction to the vertical direction, and further the projection module 4 is driven to move from the horizontal direction to the vertical direction. The hinge part may be accompanied by a damping design so that the user can fix the second support bar 3 at any certain angle of rotation therein.

The height of the first support bar 2 is adjustable. Specifically, the first support rod 2 includes an inner tube 21, an outer tube 22, and a lock nut 23. The bracket A2 is fixedly connected with the inner tube 21. The outer tube 22 is sleeved outside the inner tube 21, and the outer tube 22 is provided with a slot along the axial direction. The outer part of the outer tube 22 is provided with a thread matched with the locking nut 23, and the matching surface between the outer tube 22 and the locking nut 23 is conical. Tightening the outer tube 22 when the lock nut 23 is tightened, so that the gap between the outer tube 22 and the inner tube 21 becomes small; the inner tube 21 and the outer tube 22 can be locked together by further tightening the locking nut 23. On the contrary, when the locking nut 23 is loosened, the gap between the outer tube 22 and the inner tube 21 becomes large, and at this time, the position of the inner tube 21 can be adjusted. The present embodiment achieves the adjustment of the height of the first support bar 2 in this manner.

The distance from the projection module 4 to the projection surface can be adjusted by adjusting the height of the first supporting rod 2. The projection plane refers to a projected solid bearing plane, for example, when projected toward the ground, the ground is the projection plane, and when projected toward the wall, the wall is the projection plane. Under the condition that the projection direction and the projection surface have a certain included angle, the projection picture can become larger along with the increase of the distance, so that the size of the projection picture can be indirectly adjusted. In addition, the height of the first support rod 2 is adjustable, so that the projection device can be placed in a low environment.

The projection module 4 is arranged at the other end of the second support rod 3 through a second adjusting mechanism, and the second adjusting mechanism is configured to be capable of adjusting an included angle between the projection module 4 and the second support rod 3. Fig. 3 is a schematic sectional view of a region B in fig. 1, and fig. 4 is a partially enlarged schematic view of fig. 3, which will be further described with reference to fig. 3 and 4.

Referring to fig. 3, the second adjustment mechanism includes a second hinge shaft B1 and a rotation shaft B2. The second hinge axis B1 is perpendicular to the plane of the first support bar 2 and the second support bar 3. One end of the rotation shaft B2 is connected to the second hinge shaft B1, and the other end is connected to the projection module 4. A complete rotating hinge is formed between the second hinge shaft B1 and the rotating shaft B2, and the rotating shaft B2 can rotate around the second hinge shaft B1 at a small angle so as to drive the projection module 4 to swing at a small angle, so that the projection direction of the projection module 4 can swing at a small angle. The hinge portion may be accompanied by a damping design so that the user can fix the hinge B2 at any one of a number of rotational angles.

Referring to fig. 3 and 4, the projection module 4 is configured to be capable of circumferential rotation about a rotation axis B2. In one embodiment, the rotation axis B2 is disposed along the projection direction of the projection module 4, so that the projection module 4 can rotate circumferentially around the projection direction. The projection module 4 is provided with an elastic pressing piece B3 inside, and the elastic pressing piece B3 is fixed on the main bracket of the projection module 4 through a screw B31. The center of the elastic pressing piece B3 is provided with an opening, the other end of the rotating shaft B2 penetrates through the opening at the center of the elastic pressing piece B3, the elastic pressing piece B3 presses the rotating shaft B2 towards the center direction of the elastic pressing piece B3, and due to the elasticity of the elastic pressing piece B3, the projection module 4 can rotate around the rotating shaft B2.

A stop part B21 is arranged at one side of the rotating shaft B2, and the elastic pressing sheet B3 is positioned between the stop part 21 and the shell 48 of the elastic module. When the projection module 4 is located at the position shown in fig. 4, the other side of the rotating shaft B2 is close to the screw B31 and there is a gap between the other side of the rotating shaft B2 and the screw B31, which does not hinder the rotation of the rotating shaft B2. When the projector module 4 starts to rotate from the position shown in fig. 4, the stopper B21 restricts the rotation of the projector module 4 to the opposite side. That is, the stopper B21 can restrict the rotation of the projection module 4 within a range of 180 degrees.

From the above, it can be seen that the projection apparatus provided by the present embodiment is provided with a plurality of adjustable positions, including height adjustment and direction adjustment. The area between the projection module and the projection picture can be regarded as a functional area, and the projection direction and the position of the functional area can be adjusted by utilizing the adjusting mechanism.

In one embodiment, an inertial sensor (e.g., a 6-degree-of-freedom sensor) may be disposed inside the projection module, and a sensor may be disposed at the adjustment position, so that the intelligent system may determine the posture of the projection device according to the sensing data, and project different contents according to different postures. In addition, the display direction of the projection content can be adjusted according to the posture of the projection device, for example, the projection content is adjusted to be displayed on a horizontal screen or displayed on a vertical screen, so that the projection device has a double-screen switching function.

In one embodiment, the posture of the projection device is adjusted, so that the projection device has the function of dynamically scanning the object along with the posture change of the projection device.

In one embodiment, the projection device further comprises a first position sensor disposed at the first adjustment mechanism and a second position sensor disposed at the second adjustment mechanism. The control module of the projection equipment determines the projection direction of the projection module according to the sensing data output by the first position sensor and the second position sensor, and replaces the projection content and/or adjusts the display direction of the projection content according to the projection direction.

In one embodiment, the projection module 4 is further provided with an inertial sensor. And the control module of the projection equipment determines the projection direction according to the sensing data output by the inertial sensor, and replaces the projection content and/or adjusts the display direction of the projection content according to the projection direction.

In one embodiment, in the functional area of the projection device, the camera can identify the position, size, shape, color and the like of an object placed in the functional area, and dynamically track the motion track of the object in the functional area.

In one embodiment, the projection device has gesture recognition capabilities and may perform different operations depending on the user's gesture.

In one embodiment, the intelligent system of the projection device can perform intelligent processing according to a visual system, and realize intelligent feedback through projection display, sound, light and the like, which is equivalent to a multifunctional artificial intelligent terminal. In one embodiment, the projection device may be connected to a network and a cloud in a wireless and/or wired manner, and may serve as an input terminal or an output terminal of artificial intelligence. For example, the projection device may also be used as a smart speaker.

In one embodiment, each adjusting mechanism can be additionally provided with a driver such as a servo motor, so that the multi-degree-of-freedom posture adjustment like a mechanical arm can be realized, and further dynamic scanning display can be performed in a large range.

In other embodiments, the first support rod and the second support rod are connected, the second support rod and the rotating shaft are connected, and the movement mode of the second support rod and the rotating shaft can be in other forms, and the adjustment range and the adjustment degree of freedom can be increased or decreased.

The embodiment of the utility model provides a projection equipment has the adjustable bearing structure of a set of system, can realize from the horizontal plane to the adjustment of vertical face wide-angle projection direction, can do the rotatory projection of wide-angle simultaneously around the chassis. The synchronous change of the picture in the adjusting process can be realized by matching with a mechanism and a sensor of the system, and the function similar to scanning display can be realized.

The embodiment of the utility model provides a projection equipment passes through the integration of system, can have following technological effect: multiple functions such as projection display, object recognition, gesture recognition, sound input and output, illumination, wireless connection and the like are organically integrated together, so that the projection equipment is complete in function and has high intelligence.

The embodiment of the utility model provides a reasonable functional module part of projection equipment lets whole projection equipment occupation space very little, and replacement desk lamp that can be convenient is placed at the desktop.

The present invention may be a system, method and/or computer program product. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied thereon for causing a processor to implement various aspects of the present invention.

The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.

The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.

Computer program instructions for carrying out operations of the present invention may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, the electronic circuitry can execute computer-readable program instructions by utilizing state information of the computer-readable program instructions to personalize the electronic circuitry, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA), to thereby implement various aspects of the present invention.

Various aspects of the present invention are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.

These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.

The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions. It is well known to those skilled in the art that implementation by hardware, by software, and by a combination of software and hardware are equivalent.

While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the invention is defined by the appended claims.

Claims

1. A projection device is characterized by comprising a base (1), a first supporting rod (2) with adjustable height, a second supporting rod (3) and a projection module (4);

one end of the first supporting rod (2) is arranged on the base (1), the other end of the first supporting rod is connected with one end of the second supporting rod (3) through a first adjusting mechanism, and the first adjusting mechanism is configured to be capable of adjusting an included angle between the second supporting rod (3) and the first supporting rod (2);

the projection module (4) is arranged at the other end of the second supporting rod (3) through a second adjusting mechanism, and the second adjusting mechanism is configured to be capable of adjusting an included angle between the projection module (4) and the second supporting rod (3).

2. Projection device according to claim 1, wherein the projection module (4) is configured to be rotatable circumferentially around its projection direction.

3. The projection device of claim 1, wherein the first adjustment mechanism includes a first hinge axis (a1) and a bracket (a 2);

the first hinge shaft (A1) is perpendicular to the plane of the first support rod (2) and the second support rod (3);

one end of the bracket (A2) is connected with the first hinge shaft (A1), and the other end is connected with the first supporting rod (2).

4. A projection device according to claim 3, wherein the first support rod (2) comprises an inner tube (21), an outer tube (22) and a locking nut (23);

the bracket (A2) is fixedly connected with the inner pipe (21);

the outer pipe (22) is sleeved outside the inner pipe (21), threads matched with the locking nut (23) are arranged outside the outer pipe (22), and a groove is formed in the outer pipe (22) in the axial direction.

5. The projection apparatus of claim 1, wherein the second adjustment mechanism includes a second hinge axis (B1) and a rotation axis (B2);

the second hinge shaft (B1) is perpendicular to the plane of the first support rod (2) and the second support rod (3);

one end of the rotating shaft (B2) is connected with the second hinge shaft (B1), and the other end of the rotating shaft (B2) is connected with the projection module (4);

the projection module (4) is configured to be capable of rotating circumferentially around the rotation axis (B2).

6. The projection apparatus according to claim 5, wherein an elastic pressing piece (B3) is disposed inside the projection module (4), the other end of the rotating shaft (B2) passes through the opening at the center of the elastic pressing piece (B3) and the elastic pressing piece (B3) presses the rotating shaft (B2).

7. Projection device according to claim 1, wherein a rotating disc (C1) is arranged on the base, and the first support bar (2) is fixedly connected with the rotating disc (C1).

8. The projection device of claim 1, further comprising a first position sensor disposed at the first adjustment mechanism and a second position sensor disposed at the second adjustment mechanism;

the projection equipment is provided with a control module, and the control module is used for determining the projection direction of the projection module (4) according to the sensing data output by the first position sensor and the second position sensor, and replacing projection content and/or adjusting the display direction of the projection content according to the projection direction.

9. Projection apparatus according to claim 2, wherein said projection module (4) is further provided with inertial sensors;

10. The projection device according to any of the claims 1 to 9, wherein the projection module (4) further comprises a visible light camera and/or an infrared camera; the projection device further comprises any one or a combination of the following modules: the device comprises an object recognition module, a face recognition module and a gesture recognition module.