Adjustment of possible projection devices

Abstract

The present disclosure provides a projection device. ni 【Solution means】The projection device includes a device housing and , a moving unit and , an optical engine and , liquid cooling Device and , A liquid cooling system was connected via flexible piping. a liquid cooling head, and includes It is. The liquid cooling head is attached to the optical engine ni and, by the optical engine Contact to perform heat dissipation of the optical engine n The drive unit is configured to drive the optical engine cormorant. so as to adjust the projection angle of the projection device and rotate it with respect to the device housing.​​

Description

Technical Field

[0001] This disclosure asserts the full interests of Chinese Patent Application No. 202422912977.2 entitled “Projection Apparatus,” filed with the State Intellectual Property Administration of the People's Republic of China on 27 November 2024, the full text of which is incorporated herein by reference.

[0002] The present disclosure relates to the technical field of projection devices (For example, a projector) thereof Regarding .

Background Art

[0003] A projection device, also called a projector or a projection machine, is a device that can project an image or a video onto a screen and can reproduce corresponding video signals by connecting to a computer, a VCD, a DVD, a BD, a game console, a DV, etc. via different interfaces. Projection devices are widely applied in homes, offices, schools, and entertainment venues, and there are different types such as CRT, LCD, DLP, etc. according to the operating method. The mounting method of the projection device can be divided into front desk projection, front ceiling projection, rear desk projection, rear ceiling projection, etc. In the related art, generally, a projection device can automatically adjust the projection angle do not have. a user Usually needs to manually adjust the projection angle of the entire projection device using an additional device, and in order to achieve the adjustment of the projection angle 、 it is necessary to adjust the position of the entire projection device this is, which is difficult to adjust, resulting in a decline in the user experience

Summary of the Invention

Problems to be Solved by the Invention

[0004] In view of this, the present disclosure provides a projection device to solve the above problems that the projection angle cannot be automatically adjusted and is difficult to adjust and / or .

Means for Solving the Problems

[0005] In one aspect of the present disclosure The a projection device includes a device housing, a drive unit, an optical engine unit, a liquid cooling unit provided in the device housing, and According to, the said Suitable for liquid cooling units liquid-cooled head and 、 Includes obtain .

[0006] The drive unit and the liquid cooling unit and Each of these is fixedly connected to the device housing. obtain. The optical engine unit is rotatably connected to the device housing, and the liquid cooling unit and the liquid cooling head and They are connected via flexible piping. But often The liquid-cooled head is attached to the optical engine unit and is in contact with the optical engine unit to dissipate heat from the optical engine unit. obtain. The drive unit is configured to drive the optical engine unit to rotate it relative to the device housing in order to adjust the projection angle of the projection device. profit ru.

[0007] One example The projection device includes a rotating shaft, and the rotating shaft is fixedly connected to the optical engine unit. obtain. The drive unit is rotatably connected to the optical engine unit via the rotating shaft, and the drive unit rotates the optical engine unit relative to the device housing by driving the rotating shaft.

[0008] One example The flexible piping includes, in order, a first pipe section, a curved pipe section, and a second pipe section. obtain. The first pipe section communicates with the liquid cooling unit, the second pipe section communicates with the liquid cooling head, and the curved pipe section is provided around the rotating shaft.

[0009] One example The rotating shaft includes a through passage. profit The through passage extends along the axial direction of the rotating shaft, and the flexible piping passes through the through passage of the rotating shaft to connect the liquid cooling head and the liquid cooling unit.

[0010] One example In this case, the liquid cooling unit includes a radiator and cooling a fan, profit the radiator communicates with the liquid cooling head through the flexible pipe, and the cooling exhaust port of the fan is directed toward the radiator.

[0011] One example In this case, the drive unit includes a drive part and a transmission part profit the drive part is fixedly connected to the device housing, and is connected to the optical engine unit through the transmission part. Thus, the drive part drives the transmission part to rotate the optical engine unit relative to the device housing.

[0012] One example In this case, the transmission part includes one of a gear transmission mechanism, a worm transmission mechanism, and a screw nut transmission mechanism.

[0013] One example In this case, the drive unit includes a drive motor obtain. the drive motor is fixedly connected to the device housing profit , The aforementioned drive motor is and is connected to the optical engine unit through the output shaft of the drive motor, so as to drive the optical engine unit to rotate relative to the device housing.

[0014] One example In this case, the optical engine unit includes a lens housing obtain. the device housing includes a projection notch adapted to the lens housing profit , and an arc surface extending around the rotation axis is provided on a side of the lens housing away from the rotation axis of the optical engine unit profit .

[0015] One example In this case, the adjustment range of the projection angle of the projection device is -10° to +45°.

[0016] This disclosure Show related technologies solution The means include the following beneficial effects: One example In this system, the liquid-cooled head is attached to the optical engine unit, and the liquid-cooled unit and the liquid-cooled head are connected via flexible piping. A drive unit is provided within the projection device, and the drive unit drives the optical engine unit to rotate it relative to the device housing, thereby adjusting the projection angle of the projection device. Furthermore, by maintaining the device housing still during the process of adjusting the projection angle, the overall appearance of the projection device is kept stable, and only the figure projected by the optical engine unit changes within the movable range of the optical engine unit. do This ensures better overall stability of the projection device's appearance, enables convenient adjustment of the projection angle, and improves the user experience. Furthermore, the flexible connection between the liquid cooling unit and the liquid cooling head ensures cooling for the optical engine unit, and the liquid cooling unit can be separated from the optical engine unit. This eliminates the need to rotate the liquid cooling unit when the optical engine unit rotates relative to the device housing, thereby reducing the volume of components that need to rotate, resulting in a more compact, integrated appearance and a projection device with conveniently adjustable projection angles.

[0017] It should be understood that the above general explanation and the detailed explanation below are illustrative and explanatory only and do not limit the scope of this disclosure.

[0018] The drawings herein are incorporated into the specification and constitute part of this specification, illustrating the principles of the present application together with the specification, showing embodiments conforming to the present application.

[0019] To more clearly describe the embodiments of the present invention or the technical means in the prior art, the drawings necessary for describing the embodiments or the prior art will be briefly described below, and obviously, those skilled in the art can obtain other drawings based on these drawings without any creative work.

[0020] One or more embodiments are illustrated by the corresponding drawings, and these illustrative descriptions are not limiting to embodiments. Elements having the same reference numerals in the drawings represent similar elements, and unless otherwise specified, the drawings do not constitute a proportional limitation. [Brief explanation of the drawing]

[0021] [Figure 1] This is a schematic diagram of a projection device as an example. [Figure 2] This is a schematic diagram illustrating the cooperation between a drive unit and an optical engine unit in one example. [Figure 3] This is a schematic diagram showing the fitting position between the lens housing and the device housing in an example of a projection device. [Figure 4] This is a cross-sectional view of the fitting position between the lens housing and the device housing in a projection device, as an example. [Figure 5] This is another schematic diagram showing the fitting position between the lens housing and the device housing in a projection device, as an example. [Figure 6] This is another cross-sectional view of the fitting position between the lens housing and the device housing in a projection device, as an example. [Figure 7] This is a schematic diagram showing an example of a projection device in the first projection state. [Figure 8] This is a schematic diagram showing an example of a projection device in the second projection state. [Figure 9] This is a schematic diagram showing an example of a projection device in the third projection state. [Figure 10] This is a schematic diagram illustrating the transmission principle of the drive unit and optical engine unit of a projection device, as an example. [Modes for carrying out the invention]

[0022] To further clarify the purpose, technical means, and advantages of the embodiments of this application, the technical means of the embodiments of this application will be clearly and completely described below with reference to the drawings of the embodiments, and it is clear that the embodiments described are some, but not all, embodiments of this application. All other embodiments that a person skilled in the art could obtain without creative effort based on the embodiments of this application are all included within the scope of protection of this application.

[0023] To illustrate the diverse structures of this disclosure, various examples are disclosed below. To simplify the disclosure of this application, the components and installation of a specific example are described below. Naturally, these are , book This invention is not intended to limit the scope of the application. Furthermore, the reference numbers and / or reference letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate relationships between the various embodiments and / or installations considered. While the invention provides examples of various specific processes and materials, those skilled in the art will be aware of the applicability of other processes and / or the use of other materials.

[0024] For the sake of clarity, spatially relative terms may be used herein to describe the relative position or rotation of one element or feature shown in the figure to another element or feature, such as "internal," "external," "inside," "outside," "below," "downward," "up," "above," "front," and "back." Such spatially relative terms include different orientations of the device during use or operation, in addition to the orientations depicted in the figure. For example, if the device in the figure undergoes a reversal of position, a change in orientation, or a change in rotation, these orientation indications will also change accordingly. For example, an element described as being "below the other element or feature" or "below the other element or feature" will subsequently be oriented "above the other element or feature" or "above the other element or feature." Thus, "below..." Use The terms may include upward and downward directions. The apparatus may be oriented in other directions (rotated by 90 degrees or in other directions), and the descriptions of spatially relative relationships used herein may be interpreted accordingly.

[0025] To solve the above technical problem of not being able to automatically adjust the projection angle, this disclosure provides a projection device and a method for adjusting the projection angle thereof. In the projection device of this disclosure, the liquid-cooled head is attached to an optical engine unit, and the liquid-cooled unit and the liquid-cooled head are in communication via flexible piping. It is. Inside the projection device teeth A drive unit is provided. It is. The drive unit can adjust the projection angle of the projection device by driving the optical engine unit to rotate it relative to the device housing. Furthermore, by maintaining the device housing still during the adjustment of the projection angle, it ensures that the overall appearance of the projection device is maintained stably, and only the figure projected by the optical engine unit changes within the range of motion of the optical engine unit. I will. This ensures better overall stability of the projection device's appearance, enables convenient adjustment of the projection angle, and improves the user experience. ,liquid Flexible connection between the cooling unit and the liquid cooling head. teeth This not only ensures a cooling effect for the optical engine unit, but also allows the liquid cooling unit to be separated from the optical engine unit. ru. In the process of the optical engine unit rotating relative to the device housing, there is no need to rotate the liquid cooling unit. This reduces the volume of components that need to rotate, resulting in a more compact projection device with a unified appearance and convenient adjustment of the projection angle.

[0026] One example The present invention provides a projection device and a method for adjusting its projection angle. As shown in Figures 1 to 7, the projection device may include a device housing 3, and a drive unit 1, an optical engine unit 2, a liquid cooling unit 41, and a liquid cooling head 8 provided within the device housing 3. The drive unit 1 and the liquid cooling unit 41 are fixedly connected to the device housing 3, thereby ensuring stable mounting.

[0027] The optical engine unit 2 is rotatably connected to the device housing 3. profit The liquid cooling unit 41 and the liquid cooling head 8 are connected via flexible piping. obtain. The liquid-cooled head 8 is mounted on the optical engine unit 2. profit Furthermore, it contacts the optical engine unit 2 to dissipate heat from the optical engine unit 2. Can . for example The liquid cooling unit 41 provides a low-temperature coolant to the liquid cooling head 8, thereby enabling the liquid cooling head 8 to cool and dissipate heat from the optical engine unit 2.

[0028] The drive unit 1 can be configured to drive the optical engine unit 2 to rotate relative to the device housing 3 in order to adjust the projection angle of the projection device. . throw When it is necessary to adjust the projection angle of the shadow device, the optical engine unit 2 is driven by the drive unit 1 to rotate it relative to the device housing 3, thereby completing the adjustment of the projection angle.

[0029] The adjustable range of the projection angle of the projection device can be set according to actual needs and is not limited thereto. For example, the adjustable range of the projection angle is: With respect to the horizontal plane (or with respect to the optical axis of the optical engine unit 2 in the initial projection device state), It may be -10° or greater and 45° or less.

[0030] The optical engine unit 2 may be located within the device housing 3, and the device housing 3 can serve to protect the optical engine unit 2. In this embodiment, the location of the optical engine unit 2 within the device housing 3 does not necessarily mean that the optical engine unit 2 is always completely located within the device housing 3. do not have . In some examples, the main body of the optical engine unit 2 is located inside the device housing 3. During the process of adjusting the projection angle, at some projection angles, the lens of the optical engine unit 2 may be located outside the device housing 3, and at other projection angles, the lens of the optical engine unit 2 may be located inside the device housing 3.

[0031] As shown in Figure 10, the drive unit 1 may include a drive unit 11 and a transmission unit 12. The drive unit 11 is connected to the optical engine unit 2 via the transmission unit 12, thereby driving the optical engine unit 2 via the transmission unit 12 to rotate it relative to the device housing 3.

[0032] In some embodiments teeth, As shown in Figure 10, the drive unit 11 may include a drive motor, and the transmission unit 12 may include a gear transmission mechanism. The drive motor can be fixed to the device housing by a motor bracket, thereby achieving a fixed connection between the drive motor and the device housing. The output shaft of the drive motor may be connected to the gear transmission mechanism, and the gear transmission mechanism may be connected to the optical engine unit. In this way, the drive motor can drive the optical engine unit via the gear transmission mechanism to rotate it relative to the device housing, thereby achieving adjustment of the projection angle.

[0033] The drive unit 11 may include, but is not limited to, other devices that can provide a power source in addition to the drive motor. The transmission unit 12 may include, in addition to the gear transmission mechanism described above, other transmission mechanisms that can enable rotation of the optical engine unit relative to the device housing, for example, a worm transmission structure consisting of a worm and a worm wheel, or a screw nut transmission mechanism consisting of a screw shaft and a nut, but is not limited to these.

[0034] Furthermore, the drive unit 1 can rotate the optical engine unit 2 relative to the device housing 3 by driving the transmission unit 12 with the drive unit 11, or it can be directly connected to the optical engine unit 2 and directly drive the optical engine unit 2 to rotate it relative to the device housing 3.

[0035] The projection device may include a rotating shaft 100, which is fixedly connected to the optical engine unit 2, and the drive unit 1 is rotatably connected to the optical engine unit 2 via the rotating shaft 100. The drive unit 1 rotates the optical engine unit 2 relative to the device housing 3 by driving the rotating shaft 100. It is configured to induce this The rotating shaft 100 may be solid or hollow, but is not limited to either.

[0036] As shown in Figures 1 and 2, if the drive unit 1 includes a drive motor 111, the rotating shaft 100 may be the output shaft of the drive motor 111, or it may be a shaft provided independently on the optical engine unit 2, but is not limited to this. If the rotating shaft 100 is the output shaft of the drive motor 111, the drive motor 111 can be directly connected to the optical engine unit 2 via the output shaft to drive the optical engine unit 2 and rotate it relative to the device housing 3. If the rotating shaft 100 is not the output shaft of the drive motor 111, the output shaft of the drive motor 111 and the rotating shaft 100 can be connected by a gear transmission mechanism, a worm transmission mechanism, or a screw-nut transmission mechanism, etc., to drive the optical engine unit 2 and rotate it relative to the device housing.

[0037] In some embodiments, as shown in Figures 1 and 2, the drive unit 1 may include a drive motor 111, the output shaft of which may be fixedly connected to the optical engine unit 2. The drive motor 111 drives the optical engine unit 2 by its output shaft to rotate it relative to the device housing 3. 。 When it is necessary to adjust the projection angle of the projection device, the drive motor 111 can be activated. When activated, the drive motor 111 drives the optical engine unit 2 with its output shaft, causing it to rotate relative to the device housing 3, thereby enabling adjustment of the projection angle.

[0038] While the rotation of the optical engine unit 2 relative to the device housing 3 can be achieved by the above method, it can also be achieved by other methods, but this is not limited to those methods.

[0039] In this embodiment, the liquid cooling unit 41 and the liquid cooling head 8 are connected via flexible piping 5, allowing the liquid cooling unit 41 to be separated from the optical engine unit. When the liquid cooling head 8 rotates relative to the device housing 3 in conjunction with the optical engine unit 2, the liquid cooling unit 41 does not need to rotate. This reduces the weight and volume of the rotating module, further saving power in the drive unit 1. As a result, the overall power consumption of the projection device is reduced, and a more compact, integrated appearance and conveniently adjustable projection angle can be realized.

[0040] As shown in Figures 1 and 7-9, the optical engine unit 2 may include an optical engine 21, and the liquid cooling head 8 cooperates with the optical engine 21 to cool and dissipate heat from the optical engine 21. The liquid cooling head 8 facilitates the flow of refrigerant to the liquid cooling unit 41 via the flexible piping 5. The liquid cooling head 8 also facilitates a flexible connection with the liquid cooling unit 41 via the flexible piping 5. After the optical engine unit 2 rotates relative to the device housing 3, the flexible piping 5 can better ensure the smooth flow of refrigerant between the liquid cooling head 8 and the liquid cooling unit 41, thereby better ensuring the cooling effect of the liquid cooling unit 41 on the optical engine unit 2.

[0041] In this embodiment, the optical engine 21 may be cooled and dissipated using cooling water, or it may be cooled and dissipated using other refrigerants; however, it is not limited to these methods.

[0042] The liquid cooling unit 41 includes a radiator 411 and cooling It may include a fan 412, and the radiator 411 may be connected to the liquid cooling head 8 via flexible piping 5. cooling The exhaust port of the fan 412 may be directed towards the radiator 411 in order to dissipate heat from the radiator 411. The projection device is controlled by the control unit 7( For example, control devices, printed circuit board assemblies The control unit 7 may further include the radiator 411, and the control unit 7 may be mounted above the radiator 411, thereby ensuring better performance of the control unit 7 by allowing the radiator 411 to dissipate heat and cool the control unit 7 to some extent.

[0043] In some embodiments, the flexible piping 5 may include a first pipe section 51, a curved pipe section 52, and a second pipe section 53 that communicate in sequence, the first pipe section 51 communicating with the liquid cooling unit 41, the second pipe section 53 communicating with the liquid cooling head 8, and the curved pipe section 52 The flexible piping is provided around the rotating shaft 100. That is, the flexible piping 5 between the liquid cooling head 8 and the liquid cooling unit 41 can be connected and communicated with the liquid cooling head 8 by being stretched across the rotating shaft 100. With this arrangement, when the liquid cooling head 8 rotates relative to the device housing 3 in conjunction with the optical engine unit 2, the mutual influence between the rotating shaft 100 and the flexible piping 5 is reduced, and smoother rotation can be more effectively ensured. The flexible piping 5 may also include a liquid return pipe and a liquid supply pipe. In this embodiment, the liquid return pipe may be stretched across the rotating shaft 100, and the liquid supply pipe may also be stretched across the rotating shaft 100, but this is not limited to this configuration.

[0044] In some other embodiments, when the rotating shaft 100 has a hollow structure, the rotating shaft 100 may include a through passage that can extend along the axial direction of the rotating shaft 100, and the flexible piping 5 between the liquid cooling head 8 and the liquid cooling unit 41 passes through the rotating shaft 100 to connect the liquid cooling head 8 and the liquid cooling unit 41, thereby better avoiding mutual influence between the flexible piping 5 and the rotating shaft 100, and thus better avoiding the flexible piping 5 affecting the rotation of the optical engine unit 2 relative to the device housing 3. The flexible piping 5 may also include a liquid return pipe and a liquid supply pipe, and in this embodiment, the liquid return pipe may pass through the rotating shaft 100, and the liquid supply pipe may also pass through the rotating shaft 100, but this is not limited thereto.

[0045] As shown in Figures 1 to 6, the optical engine unit 2 may include a lens housing 23, and the device housing 3 may include a projection notch to fit the lens housing 23. An arcuate surface 231 extending around the rotation axis 100 is provided on the side of the lens housing 23 away from the rotation axis 100 of the optical engine unit 2. When the optical engine unit 2 rotates relative to the device housing 3, the optical engine unit 2 rotates around the rotation axis 100. For example, if the output shaft of the drive motor 111 is fixedly connected to the optical engine unit 2, the position of the output shaft is the rotation axis 100 of the optical engine unit 2.

[0046] Since the lens housing 23 is provided with an arcuate surface 231 extending around the rotation axis 100, when the optical engine unit 2 rotates relative to the device housing 3, the distance between the lens housing 23 and the edge of the projection notch in the device housing 3 can be maintained uniformly and set to a small distance, thereby ensuring the aesthetic appearance of the projection device.

[0047] In some embodiments, As shown in Figures 1 to 7, the optical engine unit 2 of the projection device may include an optical engine 21, a liquid-cooled head 8, a light unit 22, and a lens housing 23, all of which are integrally and fixedly connected. The drive unit 1 of the projection device may include a drive motor 111. The output shaft of the drive motor 111 may be fixedly connected to the optical engine 21 of the optical engine unit 2. The liquid-cooled unit 41 of the projection device may include a radiator 411 and a cooling fan 412. The radiator 411 communicates with the liquid-cooled head 8 via flexible piping 5, enabling a flexible connection between the liquid-cooled unit 41 and the optical engine unit 2. The control unit 7 of the projection device may be located above the radiator 411 so that the radiator 411 cools the control unit 7.

[0048] In this embodiment, the liquid cooling unit 41 is separated from the optical engine unit 2 by a flexible connection. In this embodiment, the only heat dissipation method described is a water cooling method, in which the heat from the light unit 22 in the optical engine unit 2 is transferred from the liquid cooling head 8 through the flexible piping 5 to the radiator 411, and then the heat is released by the cooling fan 412, thereby reducing the volume of the optical engine unit 2. In this embodiment, only the flexible piping 5 method is described as a flexible connection method for discharging heat from the optical engine unit 2, but the method is not limited to this flexible connection method, and other methods may be used. For example, heat may be dissipated using an air duct. Alternatively, heat may be dissipated to a non-rotating device using a Peltier element.

[0049] In this embodiment, if it is necessary to adjust the projection angle, the required target projection angle can first be set. Placement information can then be set in the projection device. (For example, received by a projection device or configured within a related user application)The placement information may include a one-to-one relationship between multiple projection angles and multiple rotation angles. After determining the target projection angle, the rotation angle corresponding to the target projection angle in the placement information can be determined as the target rotation angle. Then, the drive motor 111 is started. After starting the drive motor 111, the optical engine unit 2 can be driven via the output shaft to rotate relative to the device housing 3. The rotation shaft 100 is the position corresponding to the output shaft.

[0050] During the process in which the drive motor 111 drives and rotates the optical engine unit 2, the rotation angle of the optical engine unit 2 can be identified by the magnetic encoder. When it is determined that the required target rotation angle has been reached, case The drive motor 111 is stopped, thereby allowing the projection device to reach the required projection angle. and stop The optical engine unit 2 and the liquid cooling unit 41 are flexibly connected via the flexible piping 5, so if it is necessary to adjust the projection angle, the optical engine unit 2 can be driven and rotated. often The flexible piping 5 can perform corresponding movements in accordance with the rotation of the optical engine unit 2, and does not require the liquid cooling unit 41 to be driven to rotate. stomach. In other words, in this projection device, the optical engine unit 2 is used as the drive unit 1 to adjust the projection angle, without affecting the normal operation of the entire projection device.

[0051] The projection angle range of the projection device may be -45° to +90°. However, the larger the projection angle, the larger the rotational space required for the optical engine unit 2, the larger the space occupied by the entire projection device, and the larger the volume of the projection device. Therefore, an appropriate projection angle range can be selected based on the projection angle needs and the volume of the projection device. For example, the projection angle range may be -10° to +45°, which can satisfy most home use scenarios. As shown in Figures 7 to 9, the projection angle corresponding to the first projection state is -10°, the projection angle corresponding to the second projection state is 0°, and the projection angle corresponding to the third projection state is +45°.

[0052] Furthermore, the projection device may include a speaker unit 6, and the speaker unit 6, most of the optical engine unit 2, the liquid cooling unit 41, and the control unit 7 are all enclosed in the device housing 3, thereby completing a projection device with a compact and integrated appearance. In addition, the projection angle of the projection device can be conveniently adjusted.

[0053] In this embodiment, the rotation axis 100 of the optical engine unit 2 may be located near the top and front of the lens of the optical engine unit 2, and the side of the lens housing 23 away from the rotation axis 100 may be provided as an arcuate surface 231, as shown in Figures 5 and 6, with the arcuate surface 231 centered on the rotation axis 100. This method ensures that the gap between the lens housing 23 and the device housing is very small during the rotation process of the optical engine unit 2, resulting in a beautiful appearance for the system. Figures 3 to 6 are schematic diagrams of the appearance effect before (see Figures 3 and 4) and after (see Figures 5 and 6) the optical engine unit 2 rotates, respectively.

[0054] In this embodiment, (For example, by control unit 7) If it is determined that a fault point exists within the projection area of ​​the projection device, the drive unit 1 is controlled to drive the optical engine unit 2 to rotate relative to the device housing 3, thereby adjusting the projection angle of the projection device so that no fault points exist within the projection area of ​​the projection device.

[0055] The above-mentioned obstruction points refer to points that affect the projection effect. For example, in order to achieve a high projection effect, the projection area of ​​the projector may be flat, but if there are areas that are not on the same plane within the projection area, an uneven effect will occur in the screen projected by the projection device, affecting the user experience. Therefore, the above-mentioned areas that are not on the same plane can be considered obstruction points such as walls, ceilings, and corners.

[0056] If the projection device determines, based on the collected area information of the projection area, that a fault point exists within a predetermined area, this means that the area where the fault point exists is not suitable as a projection area. Therefore, the projection angle of the projection device can be adjusted so that no fault points exist within the projection area of ​​the projection device by controlling the drive unit 1 to drive the optical engine unit 2 and rotate it relative to the device housing 3.

[0057] In some embodiments, the region information of the projection region may include a grayscale image of the projection region, and based on this, the projection device can determine that a fault point exists within a predetermined region if it identifies a region whose average brightness is clearly different from other regions.

[0058] In some embodiments, the region information of the projection region may include the three-dimensional coordinates of the projection region. Based on this, the projection device can determine if there are points in the three-dimensional coordinates of the projection region that are not on the same plane, and obtain the number of such points. Subsequently, it determines whether the number of points is greater than a predetermined threshold for the number of points. If it determines that the number of points is greater than the threshold for the number of points, it determines that there are fault points within the projection region of the projection device.

[0059] As the optical engine unit 2 rotates relative to the device housing 3, it collects area information of the projection area of ​​the projection device in real time and can determine whether or not there are any obstructions within the current projection area. If an obstruction is present, it continues to rotate. Once there are no more obstructions, it stops rotating and can complete the adjustment of the projection angle.

[0060] In this projection device, the projection angle of the projection device is adjusted by the rotation of the optical engine unit 2, and an integrated projection device is realized by installing the optical engine unit 2 inside the device housing 3. Furthermore, in this projection device, by separating the liquid cooling unit 41 from the optical engine unit 2 by flexible connection, the space required for the rotation of the optical engine unit 2 is reduced, the overall volume of the projection device is reduced, and a compact projection device with an integrated appearance is realized, the projection angle can be adjusted more conveniently, and the weight of the rotating optical engine unit 2 is reduced, so the power consumption of the projection device is also reduced, improving energy saving effects.

[0061] To ensure understanding, the terminology used in the specification is specific. fruit This is merely to describe the form of application and is not intended to be limiting. Unless otherwise explicitly indicated in the context, the singular forms “1,” “one,” and “above” used in this specification may include the plural form. The terms “includes,” “comes with,” “contains,” and “have” are inclusive and thereby specify the presence of the described features, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The steps, processes, and operations of the methods described in this specification should not necessarily be construed as having to be performed in a specific order described or explained unless the order of execution is explicitly specified. It should be understood that different or alternative steps may be used.

[0062] In this specification, terms such as "first," "second," and "third" may be used to describe multiple elements, components, regions, layers, and / or parts, but these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are used simply to distinguish one element, component, region, layer, or part from other regions, layers, or parts. Terms such as "first," "second," and other numerical terms used in this specification do not imply order or sequence unless explicitly indicated by the context. Therefore, the first element, component, region, layer, or part described below is not limited to these terms. ,fruit Without deviating from the teaching of the implementation form, it may be called a second element, component, region, layer, or part.

[0063] The above description is merely a specific embodiment of the present application, and those skilled in the art will be able to understand or implement it. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the invention. Accordingly, the present application is not limited to these embodiments described herein, but is applicable to the broadest scope that is consistent with the principles and novel features filed herein. [Explanation of Symbols]

[0064] 1 Drive Unit 11 Drive unit 111 Drive motor 12 Transmission section 2 Optical Engine Units 21 Optical Engine 22 Light Unit 23 Lens Housing 231 Circular Arc Surface 3. Device Housing 4. Heat dissipation unit 41 Liquid Cooling Unit 411 Radiator 412 cooling fan 5 Flexible Piping 51 First pipe section 52 Curved pipe section 53 Second pipe section 6 speaker units 7 Control Unit 8 liquid-cooled heads 100 Rotation axis

Claims

1. A projection device, The device includes a device housing, a drive unit, an optical engine unit, a liquid cooling unit, and a liquid cooling head provided within the device housing, wherein the liquid cooling head cooperates with the liquid cooling unit. The drive unit and the liquid cooling unit are fixedly connected to the device housing, the optical engine unit is rotatably connected to the device housing, the liquid cooling unit and the liquid cooling head are in communication via flexible piping, the liquid cooling head is attached to the optical engine unit and in contact with the optical engine unit to dissipate heat from the optical engine unit. The projection apparatus is characterized in that the drive unit is configured to drive the optical engine unit to rotate it relative to the apparatus housing in order to adjust the projection angle of the projection apparatus.

2. The projection apparatus according to claim 1, comprising a rotating shaft, the rotating shaft being fixedly connected to the optical engine unit, the drive unit being rotatably connected to the optical engine unit via the rotating shaft, and the drive unit rotating the optical engine unit relative to the apparatus housing by driving the rotating shaft.

3. The projection apparatus according to claim 2, wherein the flexible piping includes a first pipe section, a curved pipe section, and a second pipe section that communicate in sequence, the first pipe section communicating with the liquid cooling unit, the second pipe section communicating with the liquid cooling head, and the curved pipe section being provided around the rotation axis.

4. The projection apparatus according to claim 2, characterized in that the rotating shaft includes a through passage, the through passage extends along the axial direction of the rotating shaft, and the flexible piping passes through the through passage of the rotating shaft to connect the liquid cooling head and the liquid cooling unit.

5. The projection apparatus according to claim 1, wherein the liquid cooling unit includes a radiator and a cooling fan, the radiator is connected to the liquid cooling head via the flexible piping, and the exhaust port of the cooling fan is directed toward the radiator.

6. The projection apparatus according to claim 1, wherein the drive unit includes a drive unit and a transmission unit, the drive unit is fixedly connected to the apparatus housing and connected to the optical engine unit via the transmission unit, and thereby the drive unit rotates the optical engine unit relative to the apparatus housing by driving the transmission unit.

7. The aforementioned transmission unit is, The projection device according to claim 6, characterized by including one of a gear drive mechanism, a worm drive mechanism, and a screw nut drive mechanism.

8. The projection apparatus according to claim 1, wherein the drive unit includes a drive motor, the drive motor is fixedly connected to the apparatus housing, and is connected to the optical engine unit via the output shaft of the drive motor, thereby driving the optical engine unit to rotate relative to the apparatus housing.

9. The projection apparatus according to claim 1, wherein the optical engine unit includes a lens housing, the apparatus housing includes a projection notch that fits into the lens housing, and the side of the lens housing away from the rotation axis of the optical engine unit is provided with an arcuate surface extending about the rotation axis.

10. The projection device according to any one of claims 1 to 9, characterized in that the adjustment range of the projection angle of the projection device is -10° to +45°.

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