Projection device

Abstract

The application relates to a projection device, comprising a projection host configured to project a picture to a projection area; the first adjustable supporting leg is arranged on the projection host in a rotatable manner; the first adjustable support leg is rotatably arranged on the projection host, the second adjustable support leg is rotatably arranged on the projection host, and the second adjustable support leg and the first adjustable support leg are arranged on two opposite sides or diagonal positions of the projection host; wherein the first adjustable supporting leg and the second adjustable supporting leg are both configured to be used for supporting the projection host so as to achieve angle adjustment of the projection host. The left side height and the right side height of the projection host can be adjusted to the same horizontal plane by independently operating the first adjustable supporting leg and / or the second adjustable supporting leg, namely, the correction of the left inclination angle and the right inclination angle of the projection host is realized, the skew of a projection picture is avoided, and the projection effect and the use experience feeling of the projection equipment are ensured.

Description

Technical Field

[0001] This application relates to the technical field of projection devices, and in particular to a projection device. Background Technology

[0002] The advent of projection equipment has brought great convenience to people's work, life, and study. Laser projectors are a widely used type of projection device. A laser projector is a device that uses a laser beam to project an image. Specifically, laser projectors use red, green, and blue lasers. These lasers are expanded by corresponding optical elements and processing chips within the machine, then transmitted to an X-prism to combine the three laser beams. Finally, the projection lens projects the combined laser beam onto the projection screen, completing the entire display process. Laser projectors are typically used on a desktop. An adjustable stand is installed at the bottom of the laser projector to adjust the tilt angle, ensuring the projection height meets the needs of different scenarios and users.

[0003] However, traditional adjustable feet only offer tilt adjustment. When the desktop is tilted or uneven, the laser projector placed on it will be tilted, resulting in a skewed projected image and affecting both projection quality and user experience. Utility Model Content

[0004] Therefore, it is necessary to provide a projection device to address the problem that the left and right tilt angles of laser projectors cannot be corrected, resulting in posture distortion and affecting the projection effect and user experience.

[0005] This application provides a projection device, which includes:

[0006] The projector is configured to project an image onto the projection area.

[0007] A first adjustable leg, rotatably mounted on the projection host; and

[0008] The second adjustable foot is rotatably mounted on the projection host, and the second adjustable foot and the first adjustable foot are arranged on opposite sides or diagonally opposite each other of the projection host.

[0009] Both the first adjustable foot and the second adjustable foot are configured to support the projector host in order to adjust the angle of the projector host.

[0010] When using the projection equipment in this solution, the projector is placed on a surface via the first and second adjustable feet. When the surface is level, adjusting the first and second adjustable feet synchronously and in the same direction or asynchronously and in the same direction allows for synchronized lifting and lowering of the left and right sides of the projector, thus raising or lowering the lens side and flexibly adjusting the tilt angle. When the surface is tilted or uneven, causing the projector to tilt left or right, operating the first and / or second adjustable feet individually can adjust the left and right heights of the projector to the same level, correcting the left and right tilt angles and preventing skewed projection, ensuring optimal projection quality and user experience.

[0011] The technical solution of this application will be further described below:

[0012] In one embodiment,

[0013] The projection host includes:

[0014] bottom; and

[0015] A first side surface, which is connected to one side of the bottom surface;

[0016] The first adjustable foot includes:

[0017] A first knob is located on the first side.

[0018] A first rotating shaft is rotatably mounted on the projection host, and one end of the first rotating shaft is connected to the first knob; and

[0019] The first base is disposed on the bottom surface and is connected to the other end of the first rotating shaft.

[0020] In one embodiment,

[0021] The first base includes:

[0022] A first connecting portion is disposed at one end of the length direction of the first base, and the first connecting portion is connected and fixed to the end of the first rotating shaft away from the first knob; and

[0023] A first support portion is disposed at the other end of the length direction of the first base. The first support portion is configured to support the projection host and is capable of rotating to move closer to or away from the bottom surface.

[0024] In one embodiment, the first side has a first shaft hole, the bottom surface has a first receiving groove, the first receiving groove communicates with the first shaft hole, the first rotating shaft is rotatably inserted into the first shaft hole, the first bottom foot is aligned with the first receiving groove, and at least the first support part can extend to the outside of the first receiving groove or be received inside the first receiving groove; the end face of the first shaft hole away from the first receiving groove has a first mounting groove.

[0025] The first adjustable foot also includes:

[0026] The first damping element is disposed in the first mounting groove and abuts against the first knob.

[0027] In one embodiment,

[0028] The projection host also includes:

[0029] The second side is connected to the other side of the bottom surface and is arranged opposite to the first side.

[0030] The second adjustable leg includes:

[0031] The second knob is located on the second side.

[0032] A second rotating shaft, rotatably mounted on the projection host, with one end of the second rotating shaft connected to the second knob; and

[0033] The second base is disposed on the bottom surface and is connected to the other end of the second rotating shaft.

[0034] In one embodiment,

[0035] The second base includes:

[0036] The second connecting part is disposed at one end of the second base along its length, and is fixedly connected to the end of the second rotating shaft away from the second knob; and

[0037] The second support portion is located at the other end of the length direction of the second base, and is configured to support the projection host. The second support portion is rotatable to move closer to or away from the bottom surface.

[0038] In one embodiment, a second shaft hole is provided on the second side, a second receiving groove is recessed on the bottom surface, the second receiving groove communicates with the second shaft hole, the second rotating shaft is rotatably inserted into the second shaft hole, the second bottom foot is aligned with the second receiving groove, at least the second support part can extend to the outside of the second receiving groove or be received inside the second receiving groove, and a second mounting groove is recessed on the end face of the second shaft hole away from the second receiving groove;

[0039] The second adjustable foot also includes:

[0040] The second damping element is disposed in the second mounting groove and abuts against the second knob.

[0041] In one embodiment,

[0042] The first adjustable foot also includes:

[0043] A first anti-slip pad is disposed on the outside of the first support portion;

[0044] The second adjustable foot also includes:

[0045] The second anti-slip pad is disposed on the outside of the second support portion.

[0046] In one embodiment, the projection device further includes a hanging bracket configured to be connected to a supported object; one end of the hanging bracket is connected to the first knob, and the other end of the hanging bracket is connected to the second knob.

[0047] In one embodiment,

[0048] The hanging bracket includes:

[0049] First connecting rod;

[0050] The first connector has a first connecting hole in the first knob. The first connector is disposed on the first connecting rod and passes through the first connecting hole so that the first connecting rod and the first knob can rotate relative to each other.

[0051] The second connecting rod; and

[0052] The second connector has a second connecting hole, and the second connector is disposed on the second connecting rod and passes through the second connecting hole so that the second connecting rod and the second knob can rotate relative to each other.

[0053] The hanging bracket also includes:

[0054] A hanging rod, one end of which is connected to the first connecting rod and the other end of which is connected to the second connecting rod, and the hanging rod has a hanging hole. Attached Figure Description

[0055] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0056] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0057] Figure 1 This is a schematic diagram of the projection device described in one embodiment.

[0058] Figure 2 This is a cross-sectional schematic diagram of the assembly structure of the projection host, the first adjustable leg, and the second adjustable leg in one embodiment.

[0059] Figure 3 This is a schematic diagram of the structure of the first adjustable support and the second adjustable support in one embodiment.

[0060] Figure 4 This is a schematic diagram showing the structure of the first and second adjustable feet arranged on opposite sides of the bottom surface of the projector.

[0061] Figure 5 This is a schematic diagram showing the structure of the first and second adjustable feet positioned diagonally on the bottom surface of the projection host.

[0062] Figure 6 This is a schematic diagram of a projection device placed horizontally on a horizontal table.

[0063] Figure 7 for Figure 6 A side view structural diagram.

[0064] Figure 8 for Figure 6 A schematic diagram of the projection device after tilt angle adjustment.

[0065] Figure 9 for Figure 8 A side view structural diagram.

[0066] Figure 10 A schematic diagram of a structure where the projection device is placed on an inclined table with a rightward tilt angle.

[0067] Figure 11 To allow the first adjustable foot and / or the second adjustable foot to Figure 10 A schematic diagram showing the result of correcting the projection device to a horizontal orientation.

[0068] Figure 12 A schematic diagram of a structure where the projection device is placed on an inclined table with a leftward tilt angle.

[0069] Figure 13 To allow the first adjustable foot and / or the second adjustable foot to Figure 12 A schematic diagram of the structure for correcting the projection equipment to a horizontal position.

[0070] Figure 14 This is a schematic diagram of a projection device placed on a non-flat tabletop to adjust the pitch angle in another embodiment.

[0071] Figure 15 for Figure 14 A side view structural diagram.

[0072] Figure 16 This is a schematic diagram of the assembly of the projector and its mounting bracket.

[0073] Figure 17 This is a schematic diagram of the projection equipment in a suspended installation state.

[0074] Figure 18 This is a schematic diagram of the structure of a projection device in one embodiment, where the hanging bracket acts as a handle.

[0075] Explanation of reference numerals in the attached figures:

[0076] 100. Projection device; 10. Projector main unit; 11. Bottom surface; 111. First receiving groove; 112. First mounting groove; 113. Second receiving groove; 114. Second mounting groove; 12. First side surface; 121. First shaft hole; 13. Second side surface; 131. Second shaft hole; 14. Lens; 20. First adjustable foot; 21. First knob; 211. First connecting hole; 22. First pivot; 23. First base; 231. First connecting part; 232. 24. First support part; 25. First damping element; 30. First anti-slip pad; 31. Second adjustable support foot; 32. Second knob; 33. Second connecting hole; 34. Second pivot; 35. Second base; 36. Second connecting part; 37. Second support part; 38. Second damping element; 39. Second anti-slip pad; 40. Hanging bracket; 41. First connecting rod; 42. Second connecting rod; 43. Hanging rod; 44. Hanging hole; 200. Tabletop; 300. Hanging object. Detailed Implementation

[0077] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0078] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0079] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0080] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0081] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0082] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0083] See Figure 1 This application illustrates a projection device 100 in one embodiment, which may be, but is not limited to, a laser projector.

[0084] In this embodiment, the projection device 100 includes a projection host 10, a first adjustable foot 20, and a second adjustable foot 30. The projection host 10 is the main body of the projection device 100 and is configured to project an image onto the projection area.

[0085] For example, the projection area can be a wall, a projection screen, etc., and you can choose flexibly according to the actual needs.

[0086] The first adjustable foot 20 is rotatably mounted on the projector 10, and the second adjustable foot 30 is rotatably mounted on the projector 10.

[0087] Please continue to refer to the diagram. Figure 4 and Figure 5 The second adjustable foot 30 and the first adjustable foot 20 are arranged on opposite sides or diagonally opposite the projection host 10.

[0088] For example, in this application, the first adjustable foot 20 and the second adjustable foot 30 are arranged on the bottom surface 11 of the projection host 10.

[0089] The first adjustable foot 20 and the second adjustable foot 30 are both configured to support the projector host 10, so that the angle of the projector host 10 can be adjusted when the first adjustable foot 20 and / or the second adjustable foot 30 rotates.

[0090] Optionally, the placement surface can be any of the following: a desktop 200, the ground, or the mounting surface of the bracket; the choice can be made flexibly according to actual needs.

[0091] For example, the placement surface in this application is specifically desktop 200.

[0092] For example, the first adjustable foot 20 and the second adjustable foot 30 are arranged at the bottom of the projector 10 near the first side 12 and the second side 13 of the projector 10, respectively.

[0093] It should be noted that in this application, the projection host 10 has a cubic structure, and therefore has a front side, a rear side, a left side and a right side. The lens 14 of the projection host 10 is arranged on the front side.

[0094] The first side 12 of the projector 10 can refer to the left or right side of the projector 10. In this application, the first side 12 is the left side of the projector 10. The left side is defined as the side on the left-hand side of the projector 10 when the user is standing behind the rear side of the projector 10 and facing the front side of the projector 10.

[0095] Similarly, the second side 13 of the projector 10 can refer to the right side or the left side of the projector 10. In this application, the second side 13 is the right side of the projector 10. The right side is defined as the side on the right-hand side of the projector 10 when the user is standing behind the rear side of the projector 10 and facing the front side of the projector 10.

[0096] Please combine Figures 6 to 13 In summary, implementing the technical solution of this embodiment will achieve the following beneficial effects: When the projection device 100 of this solution is in use, the projection host 10 is placed on the placement surface by the first adjustable support 20 and the second adjustable support 30 installed at the bottom. When the placement surface is horizontal, if the first adjustable support 20 and the second adjustable support 30 are adjusted synchronously and in the same direction or asynchronously and in the same direction, the left and right sides of the projection host 10 can be moved up and down synchronously, completing the horizontal lifting or lowering of the lens 14 side of the projection host 10, thereby realizing the flexible adjustment of the pitch angle of the projection host 10. When the placement surface has a tilt or unevenness, causing the projection host 10 to be tilted left and right after placement, by operating the first adjustable support 20 and / or the second adjustable support 30 separately, the left and right heights of the projection host 10 can be adjusted to the same horizontal plane, that is, the left and right tilt angles of the projection host 10 are corrected, avoiding the distortion of the projected image and ensuring the projection effect and user experience of the projection device 100.

[0097] It should be noted that the left and right tilt angles of the projector 10 can be understood in accordance with existing technology. The correction of the left and right tilt angles of the projector 10 specifically refers to restoring the left and right sides, which are at an angle to the tabletop 200 (assuming it is a horizontal plane), to a spatial arrangement perpendicular to the tabletop 200.

[0098] Specifically, such as Figures 6 to 7 As shown, the projector 10 is placed horizontally on the table 200 for use. Figures 8 to 9 The projector 10 was shown to be able to adjust its tilt angle.

[0099] like Figures 10 to 11 The diagram shows that the desktop 200 is tilted, causing the projector 10 to tilt to the right. The projector 10 is restored to a horizontal position by operating the first adjustable foot 20 and / or the third adjustable foot 30.

[0100] like Figures 12 to 13 The diagram shows that the desktop 200 is tilted, causing the projector 10 to tilt to the left. The projector 10 is restored to a horizontal position by operating the first adjustable foot 20 and / or the third adjustable foot 30.

[0101] It should be noted that the rotation adjustment of the first adjustable support leg 20 and the second adjustable support leg 30 can be achieved by manual operation or by automatic operation driven by a power mechanism.

[0102] For example, taking the synchronous and co-rotation of the first adjustable leg 20 and the second adjustable leg 30 to achieve the tilt angle adjustment of the projector 10 as an example. In an optional embodiment, the projection device 100 further includes a linkage mechanism, one end of which is connected to the first adjustable leg 20 and the other end of which is connected to the second adjustable leg 30.

[0103] In use, by operating the linkage mechanism, power is simultaneously transmitted to the first adjustable leg 20 and the second adjustable leg 30, thereby causing the first adjustable leg 20 and the second adjustable leg 30 to rotate synchronously in the same direction. Specifically, when the first adjustable leg 20 and the second adjustable leg 30 rotate away from the projector host 10, since the first adjustable leg 20 and the second adjustable leg 30 are in contact with the table 200, the projector host 10 can be raised, thereby increasing the tilt angle; conversely, the tilt angle can be decreased.

[0104] It should be noted that the adjustment of the pitch angle in this application specifically refers to raising (i.e., increasing the pitch angle) or lowering (i.e., decreasing the pitch angle) the height of the front side of the projector 10 where the lens 14 is located.

[0105] Optionally, the linkage mechanism can be an existing mature mechanism that can drive the first adjustable support leg 20 and the second adjustable support leg 30 to rotate synchronously and in the same direction, such as a strut mechanism, a swing arm mechanism, etc.

[0106] When the first adjustable foot 20 and the second adjustable foot 30 are driven by manual adjustment, in order to ensure that the adjustment heights of the left and right sides of the projector 10 are the same and to improve the accuracy of the left and right tilt angle correction, a level can be installed on the projector 10.

[0107] For example, the level can be a bubble level. This allows users to visually and accurately control the adjustment of the first adjustable foot 20 and the second adjustable foot 30.

[0108] In this application, the projector host 10 adopts a cuboid shape. It has a simple appearance, is suitable for a wide range of scenarios, and occupies little installation space.

[0109] Of course, depending on actual needs, the external structure of the projection host 10 in other embodiments can also be other shapes, such as egg-shaped, cylindrical, etc., and can be flexibly selected according to actual needs.

[0110] Please continue reading. Figure 2 and Figure 3 Furthermore, in one embodiment, the projection host 10 includes a bottom surface 11 and a first side surface 12. The first side surface 12 is connected to one side of the bottom surface 11. Specifically, the first side surface 12 is perpendicularly connected to the bottom surface 11.

[0111] The first adjustable support 20 includes a first knob 21, a first pivot 22, and a first base 23. These three components can be integrally formed or detachable and assembled, depending on actual needs.

[0112] The first knob 21 is disposed on the first side 12; the first rotating shaft 22 is rotatably disposed on the projection host 10, and one end of the first rotating shaft 22 is connected to the first knob 21; the first foot 23 is disposed on the bottom surface 11, and the first foot 23 is connected to the other end of the first rotating shaft 22.

[0113] Arranging the first knob 21 on the first side 12, compared to arranging it on the bottom 11, front side, or rear side, not only facilitates adjustment but also avoids affecting aesthetics and interfering with the lens 14 arrangement. When the first knob 21 is rotated clockwise, it drives the first shaft 22 to rotate clockwise, which in turn drives the first base 23 to rotate towards the tabletop 200. At this time, the tabletop 200 provides a counter-supporting force to the first base 23, thereby enabling the first adjustable foot 20 to lift and move the left side of the projector 10 upwards. Conversely, it can adjust the left side of the projector 10 to lower downwards, thus correcting the tilt angle of the left side of the projector 10. The operation is simple, the adjustment response is high, and the feasibility is strong.

[0114] Please continue reading. Figure 2 and Figure 3 Furthermore, the first foot 23 includes a first connecting portion 231 and a first supporting portion 232.

[0115] In this application, the first base 23 is a rectangular plate, the first connecting part 231 is arranged at one end of the length direction of the first base 23, and the first connecting part 231 is connected and fixed to the end of the first rotating shaft 22 away from the first knob 21; the first support part 232 is arranged at the other end of the length direction of the first base 23, the first support part 232 is configured to abut against the desktop 200 to support the projector host 10, and the first support part 232 can rotate to move closer to or away from the bottom surface 11.

[0116] The first connecting part 231 is connected to the first rotating shaft 22. The first support part 232, which is away from the first rotating shaft 22, abuts against the tabletop 200. When the first knob 21 is rotated to drive the first rotating shaft 22 to rotate, the first support part 232 can rotate upward or downward around the axis of the first rotating shaft 22. It is easy to understand that when the first support part 232 rotates downward, it forms a resisting force with the tabletop 200. Under the action of the reverse supporting force of the tabletop 200, the projector 10 can be raised upward, and the tilt angle can be increased; conversely, the projector 10 can be raised downward, and the tilt angle can be decreased.

[0117] Furthermore, the first side 12 is provided with a first shaft hole 121, and the bottom surface 11 is recessed to form a first receiving groove 111. The first receiving groove 111 communicates with the first shaft hole 121. The first rotating shaft 22 is rotatably inserted into the first shaft hole 121. The first bottom foot 23 is aligned with the first receiving groove 111. At least the first support part 232 can extend to the outside of the first receiving groove 111 or be received inside the first receiving groove 111.

[0118] The first rotating shaft 22 is installed in the first shaft hole 121 and can rotate, improving installation reliability and rotational stability. When it is not necessary to adjust the pitch angle, but only the projector 10 needs to work in a horizontal position on the horizontal table 200, the first knob 21 can be turned to retract the first support 232 into the first receiving groove 111. At this time, the entire first foot 23 will be fully or at least most of it housed in the first receiving groove 111, and the bottom surface 11 of the projector 10 will contact the table 200, which not only ensures the horizontality of the projector 10 but also increases the contact area with the table 200, thus improving placement stability.

[0119] Based on any of the above embodiments, a first mounting groove 112 is formed by recessing the end face of the first shaft hole 121 away from the first receiving groove 111.

[0120] The first adjustable support leg 20 also includes a first damping element 24, which is disposed in the first mounting groove 112 and abuts against the first knob 21.

[0121] The first damping element 24 abuts against the first knob 21 and can generate a damping force on the first knob 21. With the help of this damping force, the first knob 21, the first rotating shaft 22 and the first foot 23 can be braked when rotated to any angle position, so as to ensure that the projector host 10 can be suspended at any pitch angle position.

[0122] For example, the first damping element 24 may be, but is not limited to, a friction plate.

[0123] Please continue reading. Figure 2 and Figure 3 In another embodiment, the projection host 10 also includes a second side surface 13, which is connected to the other side of the bottom surface 11 and is arranged opposite to the first side surface 12. Specifically, the second side surface 13 is perpendicularly connected to the bottom surface 11, and the second side surface 13 and the first side surface 12 are arranged in parallel at intervals.

[0124] The second adjustable support 30 includes a second knob 31, a second pivot 32, and a second base 33. These three components can be integrally formed or detachable and assembled, depending on actual needs.

[0125] The second knob 31 is located on the second side 13, and the second rotating shaft 32 is rotatably mounted on the projection host 10, with one end of the second rotating shaft 32 connected to the second knob 31; the second foot 33 is located on the bottom surface 11, and the second foot 33 is connected to the other end of the second rotating shaft 32.

[0126] Arranging the second knob 31 on the second side 13, compared to arranging it on the bottom 11, front side, or rear side, not only facilitates adjustment but also avoids affecting aesthetics and interfering with the lens 14 arrangement. When the second knob 31 is rotated clockwise, it drives the second shaft 32 to rotate clockwise, which in turn drives the second base 33 to rotate towards the tabletop 200. At this time, the tabletop 200 provides a counter-supporting force to the second base 33, thereby enabling the second adjustable foot 30 to lift and move the right side of the projector 10 upwards. Conversely, it can adjust the right side of the projector 10 to lower downwards, thus correcting the tilt angle of the right side of the projector 10. The operation is simple, the adjustment response is high, and the feasibility is strong.

[0127] See Figure 14 and Figure 15 In one use case, the desktop 200 has protrusions, which can be, but are not limited to, books, shaped objects, etc.

[0128] If the first base 23 and the second base 33 are adjusted to the same height, and the second base 33 is placed on a protrusion, the right side of the projector 10 will be higher than the left side, resulting in a tilt that affects the projection effect. In this case, the second rotation can be adjusted separately to lower the height of the second base 33, thereby lowering the height of the right side of the projector 10. This corrects the left and right tilt angles of the projector 10, ensuring that the projector 10 remains level on the non-level tabletop 200.

[0129] It should be noted that in this application, the first rotating shaft 22 and the second rotating shaft 32 are coaxially arranged, that is, their axes are on the same straight line. The projection host 10 rotates upward or downward around the axis of the two shafts as the rotation center. When rotating upward, the pitch angle is increased; when rotating downward, the pitch angle is decreased.

[0130] Furthermore, the plane in which the projector 10 rotates when adjusting its pitch angle is designated as the first plane, and the plane perpendicular to the first plane that allows the projector 10 to rotate vertically is designated as the second plane. The left and right tilt angles of the projector 10 specifically refer to the height difference between the first side 12 and the second side 13 of the projector 10 within the second plane due to the tilt or unevenness of the table. At this time, both the first side 12 and the second side 13 have a tilt angle with the table 200.

[0131] Please continue reading. Figure 2 and Figure 3 Furthermore, the second foot 33 includes a second connecting portion 331 and a second supporting portion 332.

[0132] The second connecting part 331 is arranged at one end of the length direction of the second base 33, and the second connecting part 331 is connected and fixed to the end of the second rotating shaft 32 away from the second knob 31; the second support part 332 is arranged at the other end of the length direction of the second base 33, and the second support part 332 is configured to abut against the desktop 200 to support the projector host 10, and the second support part 332 can rotate to move closer to or away from the bottom surface 11.

[0133] The second connecting part 331 is connected to the second rotating shaft 32. The second support part 332, which is away from the second rotating shaft 32, abuts against the table 200. When the second knob 31 is rotated to drive the second rotating shaft 32 to rotate, the second support part 332 can rotate upward or downward with the axis of the second rotating shaft 32 as the rotation center.

[0134] It is easy to understand that when the second support part 332 rotates downward, it forms a resistance force with the tabletop 200. Under the action of the reverse support force of the tabletop 200, the projector 10 can be raised upward, and the tilt angle can be increased; conversely, the projector 10 can be raised downward, and the tilt angle can be decreased.

[0135] Based on the above embodiment, the second side 13 is provided with a second shaft hole 131, and the bottom surface 11 is recessed to form a second receiving groove 113. The second receiving groove 113 communicates with the second shaft hole 131. The second rotating shaft 32 is rotatably inserted into the second shaft hole 131. The second bottom foot 33 is aligned with the second receiving groove 113. At least the second support part 332 can extend to the outside of the second receiving groove 113 or be received inside the second receiving groove 113.

[0136] The second rotating shaft 32 is installed in the second shaft hole 131 and can rotate, improving installation reliability and rotational stability. When it is not necessary to adjust the pitch angle, but only the projector 10 needs to work in a horizontal position on the horizontal table 200, the second rotating part 31 can be rotated to retract the second support part 332 into the second receiving groove 113. At this time, the entire second foot 33 will be fully or at least most of it housed in the second receiving groove 113, and the bottom surface 11 of the projector 10 contacts the table 200, which not only ensures the horizontality of the projector 10 but also increases the contact area with the table 200, thereby improving placement stability.

[0137] It is easy to understand that the first foot 23 being housed in the first receiving groove 111 and the second foot 33 being housed in the second receiving groove 113 need to be achieved simultaneously to ensure that the bottom surface 11 is in effective contact with the tabletop 200.

[0138] Furthermore, a second mounting groove 114 is formed in the end face of the second shaft hole 131 away from the second receiving groove 113.

[0139] The second adjustable support leg 30 also includes a second damping element 34, which is disposed in the second mounting groove 114 and abuts against the second knob 31.

[0140] The second damping element 34 abuts against the second knob 31 and can generate a damping force on the second knob 31. With the help of this damping force, the second knob 31, the second rotating shaft 32 and the second foot 33 can be braked when rotated to any angle position, so as to ensure that the projector 10 can be suspended at any pitch angle position.

[0141] For example, the second damping element 34 may be, but is not limited to, a friction plate.

[0142] Please continue reading. Figure 3 In addition to the above, in another embodiment, the first adjustable foot 20 also includes a first anti-slip pad 25, which is disposed on the outside of the first support portion 232 and is used to abut against the placement surface.

[0143] Similarly, the second adjustable foot 30 also includes a second anti-slip pad 35, which is disposed on the outside of the second support portion 332 and is used to abut against the placement surface.

[0144] The first anti-slip pad 25 and the second anti-slip pad 35 can respectively increase the contact friction between the first foot 23 and the second foot 33 and the table 200, play a reliable anti-slip role, and improve the stability of the projection device 100 placed on the table 200.

[0145] For example, the first anti-slip pad 25 and the second anti-slip pad 35 can be, but are not limited to, rubber pads. Rubber pads have a high coefficient of friction and good anti-slip performance.

[0146] The rubber pads can be installed on the first foot 23 and the second foot 33 by any of the following methods: adhesive, snap-fit, or sleeve. The specific method can be flexibly selected according to actual needs.

[0147] Of course, it should be noted that in other optional embodiments, the first anti-slip pad 25 and the second anti-slip pad 35 can also adopt suction cups, adhesive sheets, or other structural forms.

[0148] Please continue reading. Figures 16 to 18 In addition, based on any of the above embodiments, the projection device 100 also includes a hanging bracket 40, which is configured to be connected to the hanging object 300; one end of the hanging bracket 40 is connected to the first knob 21, and the other end of the hanging bracket 40 is connected to the second knob 31.

[0149] On the one hand, the added hanging bracket 40 is used to hang the projection device 100, meeting the user's hanging needs. At this time, the projection device 100 has at least two usage methods: desktop placement 200 and hanging installation. Users can flexibly choose according to different user preferences and different usage scenarios, thus improving the applicability. On the other hand, the hanging bracket 40 can also serve as a handle, making it convenient for users to carry and move the device without having to set a separate handle structure on the appearance of the projector 10, which helps to simplify and beautify the overall appearance of the device.

[0150] In the above embodiment, the hanging bracket 40 includes a first connecting rod 41, a first connecting member, a second connecting rod 42, and a second connecting member.

[0151] The first knob 21 has a first connecting hole 211, and a first connector is disposed on the first connecting rod 41 and passes through the first connecting hole 211 so that the first connecting rod 41 and the first knob 21 can rotate relative to each other; the second knob 31 has a second connecting hole 311, and a second connector is disposed on the second connecting rod 42 and passes through the second connecting hole 311 so that the second connecting rod 42 and the second knob 31 can rotate relative to each other.

[0152] Furthermore, the hanging bracket 40 also includes a hanging rod 43, one end of which is connected to the first connecting rod 41, and the other end of which is connected to the second connecting rod 42. The hanging rod 43 has a hanging hole 431.

[0153] With the help of the hanging hole 431, bolts and other fastening components can be easily passed through the hanging hole 431 and then fastened to the reserved hole on the support object 300, thus realizing the hoisting of the projection equipment 100 on the support object 300. The installation structure and method are simple, the connection is highly reliable, and the installation and disassembly are convenient and labor-saving.

[0154] Furthermore, by means of the first connecting rod 41 being able to rotate relative to the first knob 21 and the second connecting rod 42 being able to rotate relative to the second knob 31, the projector 10 in the hanging installation state can also have its tilt angle adjusted by the hanging bracket 40.

[0155] For example, the supporting object 300 can be any of the following, including but not limited to a ceiling, a mounting bracket, etc.

[0156] In practical use, the projection device 100 is mostly suspended from the ceiling. This avoids occupying floor space and minimizes the risk of collision or interference with moving people or objects. However, the height of the ceiling makes it difficult for users on the ground to adjust the tilt angle of the projector 100 without using tools to climb up.

[0157] To address the aforementioned issues, in another embodiment, the projection device 100 further includes a power source with a drive arm. The power source is mounted on the hanger 40, and the drive arm is connected to the projection host 10 via a transmission connection.

[0158] Alternatively, as an alternative to the above embodiments, the projection device 100 may further include a power source having a drive arm, the power source being mounted on the projection host 10, and the drive arm being connected to the hanging bracket 40 in a transmission manner.

[0159] For example, the power source can establish a communication connection with the remote control. The user, standing on the ground, can operate the remote control to move the drive arm of the power source, thereby driving the hanging bracket 40 to rotate relative to the projector 10. This allows the user to easily adjust the tilt angle of the projector 10 in the hanging state, enhancing the user experience.

[0160] Alternatively, the power source can be a combination of a cylinder, an electric actuator, or other drive device capable of outputting linear power for extension and retraction, and a universal joint.

[0161] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0162] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A projection device, characterized in that, include: The projector is configured to project an image onto the projection area. A first adjustable support leg is rotatably mounted on the projection host. as well as The second adjustable foot is rotatably mounted on the projection host, and the second adjustable foot and the first adjustable foot are arranged on opposite sides or diagonally opposite each other of the projection host. Both the first adjustable foot and the second adjustable foot are configured to support the projector host in order to adjust the angle of the projector host.

2. The projection device according to claim 1, characterized in that, The projection host includes: bottom; and A first side surface, which is connected to one side of the bottom surface; The first adjustable foot includes: A first knob is located on the first side. A first rotating shaft is rotatably mounted on the projection host, and one end of the first rotating shaft is connected to the first knob; and The first base is disposed on the bottom surface and is connected to the other end of the first rotating shaft.

3. The projection device according to claim 2, characterized in that, The first base includes: A first connecting portion is disposed at one end of the length direction of the first base, and the first connecting portion is connected and fixed to the end of the first rotating shaft away from the first knob; and A first support portion is disposed at the other end of the length direction of the first base. The first support portion is configured to support the projection host and is capable of rotating to move closer to or away from the bottom surface.

4. The projection device according to claim 3, characterized in that, The first side has a first shaft hole, the bottom surface has a first receiving groove, the first receiving groove is connected to the first shaft hole, the first rotating shaft is rotatably inserted into the first shaft hole, the first bottom foot is aligned with the first receiving groove, and at least the first support part can extend to the outside of the first receiving groove or be received inside the first receiving groove. A first mounting groove is formed in the end face of the first shaft hole away from the first receiving groove. The first adjustable foot also includes: The first damping element is disposed in the first mounting groove and abuts against the first knob.

5. The projection device according to claim 3, characterized in that, The projection host also includes: The second side is connected to the other side of the bottom surface and is arranged opposite to the first side. The second adjustable leg includes: The second knob is located on the second side. A second rotating shaft, rotatably mounted on the projection host, with one end of the second rotating shaft connected to the second knob; and The second base is disposed on the bottom surface and is connected to the other end of the second rotating shaft.

6. The projection device according to claim 5, characterized in that, The second base includes: The second connecting part is disposed at one end of the second base along its length, and is fixedly connected to the end of the second rotating shaft away from the second knob; and The second support portion is located at the other end of the length direction of the second base, and is configured to support the projection host. The second support portion is rotatable to move closer to or away from the bottom surface.

7. The projection device according to claim 6, characterized in that, The second side has a second shaft hole, and the bottom surface is recessed to form a second receiving groove. The second receiving groove communicates with the second shaft hole. The second rotating shaft is rotatably inserted into the second shaft hole. The second bottom foot is aligned with the second receiving groove. At least the second support part can extend to the outside of the second receiving groove or be received inside the second receiving groove. The end face of the second shaft hole away from the second receiving groove is recessed to form a second mounting groove. The second adjustable foot also includes: The second damping element is disposed in the second mounting groove and abuts against the second knob.

8. The projection device according to claim 6, characterized in that, The first adjustable foot also includes: A first anti-slip pad is disposed on the outside of the first support portion; The second adjustable foot also includes: The second anti-slip pad is disposed on the outside of the second support portion.

9. The projection device according to claim 5, characterized in that, The projection device also includes a hanging bracket, which is configured to be connected to a supported object; one end of the hanging bracket is connected to the first knob, and the other end of the hanging bracket is connected to the second knob.

10. The projection device according to claim 9, characterized in that, The hanging bracket includes: First connecting rod; The first connector has a first connecting hole in the first knob. The first connector is disposed on the first connecting rod and passes through the first connecting hole so that the first connecting rod and the first knob can rotate relative to each other. The second connecting rod; and The second connector has a second connecting hole, and the second connector is disposed on the second connecting rod and passes through the second connecting hole so that the second connecting rod and the second knob can rotate relative to each other. The hanging bracket also includes: A hanging rod, one end of which is connected to the first connecting rod and the other end of which is connected to the second connecting rod, and the hanging rod has a hanging hole.

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