A horizontal-vertical adjustment structure of a projection screen without loss of pixels and a projector

Abstract

The present application relates to a kind of projection screen horizontal and vertical adjustment structure without loss of pixel, belong to projection technical field.The projection screen horizontal and vertical adjustment structure includes: for installing projection lens two-dimensional sliding mechanism, projection lens is installed at the center of the two-dimensional sliding mechanism;Drive device, the output of the drive device is connected with one side of the two-dimensional sliding mechanism, the two-dimensional sliding mechanism is moved up and down and left and right along vertical direction by the drive device.This application also provides a kind of projector.The projection screen horizontal and vertical adjustment structure can let projection picture not loss of pixel carry out screen horizontal and vertical automatic adjustment.

Description

Technical Field

[0001] The invention belongs to the technical field of projection, and in particular relates to a horizontal and vertical adjustment structure of a projection screen without losing pixels and a projector. Background Art

[0002] The projector products currently on the market basically use the horizontal screen for projection. If you need to play vertical screen pictures, videos and other materials, you basically have to crop the horizontal pixels of the projected screen, and use the electronic scaling technology of the image to fully display the vertical screen content you want to display on the projected screen.

[0003] The main problem with doing this is that the picture area displayed in portrait mode is much smaller than the picture area displayed in the normal full screen of the projector, and the pixels are also much lower. The displayed vertical screen content is not only small, but also has low clarity.

[0004] Among the projector products currently on the market, there are no projectors whose projected display screen can automatically change from horizontal to vertical after the projector body rotates 90 degrees around the optical axis of the lens. There is even less a projector that can automatically switch between horizontal and vertical without losing pixels. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides a projection screen horizontal and vertical adjustment structure and a projector without losing pixels, which can automatically adjust the screen horizontally and vertically without losing pixels on the projection screen.

[0006] The present invention solves the above-mentioned technical problem with the following technical solution: a structure for adjusting the horizontal and vertical positions of a projection screen without losing pixels, comprising:

[0007] a two-dimensional sliding mechanism for mounting a projection lens, wherein the projection lens is mounted on the two-dimensional sliding mechanism;

[0008] A driving device, wherein the output end of the driving device is connected to one side of the two-dimensional sliding mechanism, and the driving device drives the two-dimensional sliding mechanism to move up, down, left and right in the vertical direction.

[0009] The beneficial effects of the present invention are as follows: (1) the two-dimensional sliding mechanism is driven by a driving device, thereby changing the position between the projection lens and the imaging chip, causing the projection image to shift. At this time, the entire projector is rotated to achieve automatic change of the horizontal and vertical screen directions of the projection image, which is very convenient to operate;

[0010] (2) After the adjustment structure is adjusted, when the projection screen is changed from horizontal screen to vertical screen display, the projection screen will automatically move upward, and the projection light will not be blocked by the surface on which the projector is placed. There is no need to adjust the position of the projector or adjust the pixels of the projection screen, thereby not causing pixel loss.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, the two-dimensional sliding mechanism includes a sliding base plate and a sliding support plate, the sliding support plate is slidably connected to the sliding base plate, the output end of the driving device is transmission-connected to one end of the sliding support plate, the sliding base plate is used to be slidably connected to the optical machine housing in the projector, and the projection lens is installed on the sliding support plate.

[0013] The beneficial effect of adopting the above further solution is that it is convenient to carry out movement adjustment in two directions, which is beneficial to adjust the position of the projection lens.

[0014] Furthermore, a first sliding sleeve and a first limiting rod are provided on one side or both sides of the sliding base plate, the first sliding sleeve is fixedly connected to one side of the sliding base plate, the first sliding sleeve is provided on the first limiting rod, and the first limiting rod is used to connect to the optical machine housing in the projector.

[0015] The beneficial effect of adopting the above further solution is that it facilitates the sliding of the sliding bottom plate.

[0016] Furthermore, a second sliding sleeve and a second limiting rod are provided on one side or both sides of the sliding support plate, the second sliding sleeve is fixedly connected to the side of the sliding support plate, the second sliding sleeve is slidingly sleeved on the second limiting rod, the second limiting rod is arranged perpendicular to the first limiting rod, and the output end of the driving device is transmission-connected to one of the second sliding sleeves.

[0017] The beneficial effect of adopting the above further solution is that it facilitates the sliding of the sliding support plate relative to the sliding bottom plate.

[0018] Furthermore, the driving device includes a first driving member and a second driving member, the output end of the second driving member is transmission-connected to the first driving member, and the output end of the first driving member is transmission-connected to one of the second sleeves.

[0019] The beneficial effect of adopting the above further solution is that movement in two directions can be easily achieved.

[0020] Furthermore, the first driving member includes a first stepper motor, a first gear and a first rack. The first rack is arranged along the length direction corresponding to the second sleeve and is fixedly connected to the second sleeve. The first gear is connected to the output end of the first stepper motor. The first gear is engaged with the first rack, and the sliding support plate is driven to slide by the first stepper motor.

[0021] The beneficial effect of adopting the above further solution is that it is conducive to driving the sliding support plate to move slowly and has high adjustment accuracy.

[0022] Furthermore, the second driving member includes a second stepper motor, a second gear and a second rack, the second rack is parallel to the first limiting rod, an extension support seat is provided at one end of the sliding base plate, the first stepper motor is fixedly connected to the extension support seat, the second rack is fixedly connected to the extension support seat, the second gear is connected to the output end of the second stepper motor, the second gear is engaged with the second rack, and the sliding base plate is driven to slide by the second stepper motor.

[0023] The beneficial effect of adopting the above further solution is that the sliding base plate and the sliding support plate are driven to move slowly together, and the adjustment accuracy is high.

[0024] The present invention also provides a projector, comprising:

[0025] Optical machine body;

[0026] As for the adjustment structure mentioned above, one end of the adjustment structure is slidably connected to the optical machine body, and the adjustment structure is located on the light source output end of the optical machine body;

[0027] A projection lens is mounted on the adjustment structure.

[0028] Furthermore, the projector further comprises a sensor for detecting the position of the driving device, wherein the sensor is installed in the projector.

[0029] The beneficial effect of adopting the above further solution is that it is possible to determine the required moving position of the sliding support plate and whether the moving position is completed.

[0030] Furthermore, it also includes a six-axis gyroscope for detecting the direction of the optical machine body, and the six-axis gyroscope is installed in the projector.

[0031] The beneficial effect of adopting the above further solution is that the projection image can be adjusted according to the rotation of the optical machine body. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the regulating structure of the present invention;

[0033] Figure 2 It is a structural schematic diagram of the projector of the present invention.

[0034] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0035] 1. Sliding base plate; 2. First sliding sleeve; 3. First limiting rod; 4. Second sliding sleeve; 5. Second limiting rod; 6. Sliding support plate; 7. Projection lens; 8. First rack; 9. First gear; 10. First fixed plate; 11. First stepper motor; 12. Extension support seat; 13. Second rack; 14. Second gear; 15. Second fixed plate; 16. Second stepper motor; 17. Adjustment structure; 18. Optical machine body. DETAILED DESCRIPTION

[0036] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0037] Example

[0038] like Figure 1 and Figure 2 As shown, this embodiment provides a horizontal and vertical adjustment structure 17 for a projection screen without losing pixels, including: a two-dimensional sliding mechanism and a driving device.

[0039] The two-dimensional sliding mechanism is used to install the projection lens 7, and the projection lens 7 is installed on the two-dimensional sliding mechanism. The output end of the driving device is connected to one side of the two-dimensional sliding mechanism, and the two-dimensional sliding mechanism is driven by the driving device to move up, down, left and right.

[0040] The two-dimensional sliding mechanism is used to achieve sliding adjustment in two directions on the same plane to adjust the direction. The projection lens 7 can be installed on the two-dimensional sliding mechanism so that the projection lens 7 can move with the two-dimensional sliding mechanism to change the position of the projection lens 7. The two-dimensional sliding mechanism is provided with a through hole for light to pass through, and the projection lens 7 is installed on the through hole so that light can be irradiated onto the projection lens 7. The driving device is used to drive the two-dimensional sliding mechanism to achieve movement in two directions. The projection lens 7 can be located at the center of the two-dimensional sliding mechanism or at other locations. The corresponding position can be designed according to specific needs.

[0041] The effect of the technical solution of this embodiment is that the two-dimensional sliding mechanism is driven to move by the provided driving device, thereby changing the position between the projection lens 7 and the imaging chip, causing the projection screen to be displaced. If the entire projector is rotated at this time, the projection screen will automatically be converted from a horizontal screen to a vertical screen under the control of the corresponding software, thereby realizing the change of the direction of the projection screen, which is very convenient to operate. After adjustment by this adjustment structure 17, when the projection screen is changed from a horizontal screen to a vertical screen display, the projection light will not be blocked by the surface on which the projector is placed, and there is no need to adjust the position of the projector or adjust the pixels of the projection screen, thereby not causing pixel loss. This adjustment structure 17 allows the projector to adjust the screen horizontally or vertically without losing pixels. It can be conveniently achieved by rotating the projector body 90 degrees around the optical axis of the lens to realize the function of the projection screen display screen similar to that of a mobile phone or tablet screen that can automatically convert horizontally or vertically when the body is rotated.

[0042] Preferably, in this embodiment, the two-dimensional sliding mechanism includes a sliding base plate 1 and a sliding support plate 6, the sliding support plate 6 is slidingly connected to the sliding base plate 1, the output end of the driving device is transmission-connected to one end of the sliding support plate 6, the sliding base plate 1 is used to be slidingly connected to the optical machine housing in the projector, and the projection lens 7 is installed on the sliding support plate 6.

[0043] The sliding base plate 1 and the sliding support plate 6 are both vertically arranged, with the sliding support plate 6 on one side of the sliding base plate 1. The sliding base plate 1 is connected to the outer wall of the projector, allowing the sliding base plate 1 to move relative to the projector, thereby driving the projection lens 7 to move relative to the projector. The sliding support plate 6 moves relative to the sliding base plate 1, facilitating movement and adjustment in both directions, which facilitates adjustment of the position of the projection lens 7. Both the sliding base plate 1 and the sliding support plate 6 are provided with through-holes for light to pass through. The projection lens 7 can be located at the center of the sliding support plate 6, or alternatively, as needed.

[0044] Preferably, in this embodiment, a first sliding sleeve 2 and a first limiting rod 3 are provided on one side or both sides of the sliding base plate 1, the first sliding sleeve 2 is fixedly connected to one side of the sliding base plate 1, the first sliding sleeve 2 is slidably mounted on the first limiting rod 3, and the first limiting rod 3 is used to connect to the projector housing.

[0045] Among them, the two ends of the first limiting rod 3 are used to connect with the projector housing, and the first sliding sleeve 2 can slide along the length direction of the first limiting rod 3, thereby conveniently driving the sliding base plate 1 to move along a fixed direction, which is conducive to adjusting the position of the sliding base plate 1.

[0046] Preferably, in this embodiment, a second sleeve 4 and a second limiting rod 5 are provided on one side or both sides of the sliding support plate 6, the second sleeve 4 is fixedly connected to the side of the sliding support plate 6, the second sleeve 4 is slidably sleeved on the second limiting rod 5, the second limiting rod 5 is vertically arranged to the first limiting rod 3, and the output end of the driving device is transmission-connected to a second sleeve 4.

[0047] The second sleeve 4 and second limiting rod 5 facilitate the sliding of the sliding support plate 6 relative to the sliding base plate 1, thereby changing the relative position of the sliding base plate 1 and the sliding support plate 6. The vertical arrangement of the first limiting rod 3 and the second limiting rod 5 allows the sliding support plate 6 and the sliding base plate 1 to move crosswise, achieving movement in two directions. The two ends of the second limiting rod 5 are fixedly connected to the surface of the sliding base plate 1 proximal to the sliding support plate 6, while the second sleeve 4 slides freely on the second limiting rod 5, thereby allowing the sliding support plate 6 to move along the length of the second limiting rod 5.

[0048] Preferably, in this embodiment, the driving device includes a first driving member and a second driving member, the output end of the second driving member is transmission-connected to the first driving member, and the output end of the first driving member is transmission-connected to a second sliding sleeve 4 .

[0049] The sliding support plate 6 is driven to move relative to the sliding base plate 1 by the first driving member, and the first driving member is driven to move by the second driving member, thereby driving the sliding base plate 1 and the sliding support plate 6 to move together, respectively realizing movement in two directions.

[0050] Preferably, in this embodiment, the first driving member includes a first stepper motor 11, a first gear 9 and a first rack 8. The first rack 8 is arranged along the length direction corresponding to the second sleeve 4 and is fixedly connected to the second sleeve 4. The first gear 9 is connected to the output end of the first stepper motor 11. The first gear 9 is engaged with the first rack 8, and the sliding support plate 6 is driven to slide by the first stepper motor 11.

[0051] The first stepper motor 11 drives the first gear 9 to rotate. Since the first gear 9 meshes with the first rack 8, when the first gear 9 rotates, the first rack 8 moves longitudinally, thereby driving the movement of the sliding support plate 6. The step-by-step rotation of the first stepper motor 11 slowly moves the sliding support plate 6, achieving high adjustment accuracy. The first stepper motor 11 is conventional technology.

[0052] Preferably, in this embodiment, the second driving member includes a second stepper motor 16, a second gear 14 and a second rack 13, the second rack 13 is parallel to the first limiting rod 3, an extension support seat 12 is provided at one end of the sliding base plate 1, the first stepper motor 11 is fixedly connected to the extension support seat 12, the second rack 13 is fixedly connected to the extension support seat 12, the second gear 14 is connected to the output end of the second stepper motor 16, the second gear 14 is engaged with the second rack 13, and the sliding base plate 1 is driven to slide by the second stepper motor 16.

[0053] The second stepper motor 16 drives the second gear 14 to rotate. Since the second gear 14 meshes with the second rack 13, when the second gear 14 rotates, the second rack 13 moves longitudinally, thereby driving the movement of the extension support base 12. Since the first stepper motor 11 is fixedly connected to the extension support base 12, when the extension support base 12 moves, the first stepper motor 11 moves with it, and the sliding support plate 6 moves along with the sliding base 1. The step-by-step rotation of the second stepper motor 16 drives the sliding base 1 to move slowly, achieving high adjustment accuracy. The second stepper motor 16 is conventional. The extension support base 12 is equipped with a first fixing plate 10 for connecting to the first stepper motor 11, facilitating its securement. A second fixing plate 15 is provided on the outer wall of the projector for connecting to the second stepper motor 16, facilitating its securement. The extension support base 12 can be integrally formed with the sliding base 1 or can be a separate component and attached later, depending on the manufacturing process.

[0054] This embodiment further provides a projector, including: an optical machine body 18 , such as the above-mentioned adjustment structure 17 and a projection lens 7 .

[0055] One end of the adjustment structure 17 is slidably connected to the optical machine body 18. The adjustment structure 17 is located at the light source output end of the optical machine body 18. The projection lens 7 is mounted on the adjustment structure 17. The adjustment structure 17 can be used to adjust the position of the projection lens 7 relative to the optical machine body 18.

[0056] Preferably, in this embodiment, a sensor for detecting the position of the driving device is further included, and the sensor is installed in the projector.

[0057] The sensor is an infrared sensor. A non-reflective plate is provided on the first stepper motor 11 or the second stepper motor 16. When the first stepper motor 11 or the second stepper motor 16 moves to a designated position and blocks the infrared light generated by the infrared sensor, it indicates that the first stepper motor 11 or the second stepper motor 16 has reached the designated position. The provided sensor can detect whether the first stepper motor 11 or the second stepper motor 16 has moved to the designated position. When the horizontal or vertical projection needs to be adjusted, the sensor detects the first stepper motor 11 or the second stepper motor 16 to determine whether the sliding support plate 6 has completed its movement.

[0058] Among them, the sensor can be set in the projector as needed, and the specific location is not limited, as long as it can detect the position of the first stepper motor 11 or the second stepper motor 16. Specifically, the sensor can be on the sliding base, on the optical machine body or other devices in the projector.

[0059] Preferably, this embodiment also includes a six-axis gyroscope for detecting the direction of the optical engine body 18. The six-axis gyroscope is installed in the projector and can be installed in multiple locations within the projector, generally mounted on the PCBA board within the projector. It should be noted that the other internal structures of the projector will not be described in detail here. It is the same as the existing projector structure, including the PCBA board, fan, and housing, etc.

[0060] The six-axis gyroscope senses the rotation direction and angle of the optical machine body 18. After the six-axis gyroscope senses that the optical machine body 18 of the projector has rotated 90 degrees around the optical axis of the projection lens 7, the projection image is rotated to display the projection image in portrait mode.

[0061] It should be noted that the projector comes with a software control program for rotating the projected image. The software is existing technology and has the same principle and similar functions as the software control program for rotating the screen on existing mobile phones or tablets.

[0062] Adjustment structure 17 allows projection lens 7 to move not only vertically but also horizontally and structurally relative to the projector's built-in image chip. The horizontal and vertical displacements must be at least 50% of the image chip's effective length in those directions, ensuring a 100% screen offset for the projected image and ensuring the lower edge of the projection light is not obstructed by the projector's horizontal surface. The optical diameter of projection lens 7 must be sized to ensure that, at maximum displacement, the image quality on the projection screen meets specification. The connection between projection lens 7 and the adjustment structure must be sealed and dustproof.

[0063] When this embodiment is used, when the projector is placed horizontally for landscape display, the projection lens 7 has a 100% upward screen offset in the vertical direction, and the light at the lower edge of the projected screen can be parallel to the surface on which the projector is placed, and the projection light will not be blocked by the surface on which the projector is placed.

[0064] When the projection lens 7 moves horizontally relative to the projector's built-in image chip, the projected image will also move in the same direction as the projection lens 7, and the movement of the projected image will be greater than the movement of the projection lens 7. When the projection lens 7 moves horizontally to 50% of the length of the effective area of ​​the projector's built-in image chip, the light of the projected image near the projection lens 7 coincides with the optical axis of the projection lens 7. At this time, the projected image also has a 100% screen offset in the horizontal direction. At this time, the entire projector is rotated 90 degrees around the optical axis of the projection lens 7. The light of the projected image away from the projection lens 7 is rotated 90 degrees and then upward. In this way, the projection screen changes from a horizontal screen to a vertical screen. Then, the projection screen can be adjusted to a vertical screen. After the projector is rotated 90 degrees, it can be placed on a horizontal surface, such as a horizontal table. The lower half of the vertical screen will not be blocked by the surface on which the projector is placed. Through the above method and steps, the projected image can be adjusted horizontally or vertically without losing pixels.

[0065] In the description of the present invention, it should be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "inside", "outside", "peripheral", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0066] In the description of the present invention, “a plurality of” means at least two, for example, two, three, etc., unless otherwise clearly defined.

[0067] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0068] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A structure for adjusting the projection screen in both horizontal and vertical directions without losing pixels, characterized in that: include: A two-dimensional sliding mechanism for mounting a projection lens (7), wherein the projection lens (7) is mounted on the two-dimensional sliding mechanism; A driving device, wherein the output end of the driving device is connected to one side of the two-dimensional sliding mechanism, and the driving device drives the two-dimensional sliding mechanism to move up, down, left, and right in the vertical direction, and the displacement of the projection lens (7) in the horizontal and vertical directions reaches at least 50% of the effective length of the image chip in the direction; The two-dimensional sliding mechanism comprises a sliding base plate (1) and a sliding support plate (6); the sliding support plate (6) is slidably connected to the sliding base plate (1); the output end of the driving device is transmission-connected to one end of the sliding support plate (6); the sliding base plate (1) is used for sliding connection with an optical machine housing in a projector; and a projection lens (7) is mounted on the sliding support plate (6); A first sliding sleeve (2) and a first limiting rod (3) are provided on one side or both sides of the sliding base plate (1); the first sliding sleeve (2) is fixedly connected to one side of the sliding base plate (1); the first sliding sleeve (2) is slidably mounted on the first limiting rod (3); and the first limiting rod (3) is used to be connected to an optical machine housing in a projector; A second sliding sleeve (4) and a second limiting rod (5) are provided on one side or both sides of the sliding support plate (6); the second sliding sleeve (4) is fixedly connected to the side of the sliding support plate (6); the second sliding sleeve (4) is slidingly sleeved on the second limiting rod (5); the second limiting rod (5) is vertically arranged with the first limiting rod (3); and the output end of the driving device is transmission-connected to one of the second sliding sleeves (4).

2. The structure for adjusting the projection screen horizontally and vertically without losing pixels according to claim 1, characterized in that: The driving device comprises a first driving member and a second driving member, wherein the output end of the second driving member is in transmission connection with the first driving member, and the output end of the first driving member is in transmission connection with a second sliding sleeve (4).

3. The structure for adjusting the projection screen horizontally and vertically without losing pixels according to claim 2, characterized in that: The first driving member includes a first stepper motor (11), a first gear (9) and a first rack (8); the first rack (8) is arranged along the length direction corresponding to the second sliding sleeve (4) and is fixedly connected to the second sliding sleeve (4); the first gear (9) is connected to the output end of the first stepper motor (11); the first gear (9) is engaged with the first rack (8), and the sliding support plate (6) is driven to slide by the first stepper motor (11).

4. The structure for adjusting the projection screen horizontally and vertically without losing pixels according to claim 3, characterized in that: The second driving member includes a second stepper motor (16), a second gear (14) and a second rack (13), the second rack (13) is parallel to the first limiting rod (3), one end of the sliding base plate (1) is provided with an extension support seat (12), the first stepper motor (11) is fixedly connected to the extension support seat (12), the second rack (13) is fixedly connected to the extension support seat (12), the second gear (14) is connected to the output end of the second stepper motor (16), the second gear (14) is engaged with the second rack (13), and the sliding base plate (1) is driven to slide by the second stepper motor (16).

5. A projector, characterized in that: include: Optical machine body (18); The adjustment structure (17) according to any one of claims 1 to 4, wherein one end of the adjustment structure (17) is slidably connected to the optical machine body (18), and the adjustment structure (17) is located on the light source output end of the optical machine body (18); A projection lens (7), wherein the projection lens (7) is mounted on the adjustment structure (17).

6. The projector according to claim 5, wherein: The projector further comprises a sensor for detecting the position of the driving device, wherein the sensor is installed in the projector.

7. The projector according to claim 5, wherein: It also includes a six-axis gyroscope for detecting the direction of the optical machine body (18), and the six-axis gyroscope is installed in the projector.

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